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CN105336994A - System and method used for vehicle battery pack management - Google Patents

System and method used for vehicle battery pack management Download PDF

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Publication number
CN105336994A
CN105336994A CN201410341273.2A CN201410341273A CN105336994A CN 105336994 A CN105336994 A CN 105336994A CN 201410341273 A CN201410341273 A CN 201410341273A CN 105336994 A CN105336994 A CN 105336994A
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CN
China
Prior art keywords
switch
battery pack
vehicle load
precharge
battery
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Granted
Application number
CN201410341273.2A
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Chinese (zh)
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CN105336994B (en
Inventor
彦斯·贝肯
罗伯特·丁力
胡壮丰
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Qoros Automotive Co Ltd
Ooros Automotive Co Ltd
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Ooros Automotive Co Ltd
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Priority to CN201410341273.2A priority Critical patent/CN105336994B/en
Publication of CN105336994A publication Critical patent/CN105336994A/en
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Publication of CN105336994B publication Critical patent/CN105336994B/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a system and a method used for vehicle battery pack management. The system comprises an anode switch, a cathode switch, a precharge resistor, a precharge switch, a first switch and a battery management unit, wherein the anode switch and the cathode switch are respectively arranged between the anode of a battery pack and vehicle load and between the cathode of the battery pack and the vehicle load and are electrically connected with the battery pack and the vehicle load in series; the precharge resistor and the precharge switch are electrically connected in series between the battery pack and the vehicle load; the first end of the first switch is connected between the first end of the precharge resistor and the first end of the precharge switch, and the second end of the first switch is connected between the cathode switch and the vehicle load; the battery management unit is used for controlling the connection/disconnection of the anode switch, the cathode switch, the precharge switch and/or the first switch, so that the vehicle load is precharged through the battery pack and is charged through the battery pack, or is discharged through the precharge resistor.

Description

For Vehicular battery group management system and method
Technical field
The present invention relates generally to vehicle electric field, relates more specifically to a kind of Vehicular battery group management system and method.
Background technology
In vehicle, high pressure (HV) system, comprises battery, inverter, motor etc., has strict security requirement.Particularly in case of emergency, during as having an accident, fast also reliably by high voltage source, such as battery pack, from other parts of high-pressure system, such as vehicle load disconnects, and is vital.In addition the important point is as quickly as possible by other partial discharges of high-pressure system, dissipates out of control to prevent electric charge.Such as, prevent system component, as cable, time damaged, produce arc event.In addition, in vehicle load, as electro-motor or power supply other parts from inverter unit to high-pressure system continue power supply when, as due to after accident or when causing wheel to rotate freely after the control losing transducer, although high voltage bus, high-tension battery disconnect completely, but the delivery system of dump energy will lose efficacy, and other parts of high-pressure system are caused to be unsafe at concerned power in long-time.In this case, when a vehicle collision occurs, need to provide sooner, more reliable solution to be to disconnect battery pack and vehicle load or to make vehicle load discharge.
On the other hand, the battery used in vehicle, in certain temperature range, such as lithium battery, the marked change along with the change of temperature of its internal resistance.Lithium battery interior resistance reduces when the temperature increases, and the efficiency of lithium battery improves thereupon, and battery can in higher power level work.And when temperature is very low, lithium battery can not work at all.Therefore, when the temperature of lithium battery is too low, needs lithium battery to heat, could use in cold environment.Usually, utilize the air cooling system of vehicle, by the air in use driver's cabin as the source of heating or cool, come to heat lithium battery.But when temperature is very low, damp and hot cabin air can cause steam to condense on cold battery component.If need to remove condensation, still need to heat battery pack from inside, need to provide extra heater block and provide the power supply of electric energy for heater block, make the structure of battery circuit more complicated, add cost.
Summary of the invention
In view of the above problems, propose the present invention, to provide a kind of Vehicular battery group management system and method, to overcome the problems referred to above or to solve the problem at least in part.
According to a first aspect of the present invention, provide a kind of Vehicular battery group management system, described system comprises: positive switch, and between the positive pole being arranged on described battery pack and vehicle load, described positive switch is in series electrically connected with described battery pack and described vehicle load; Negative switch, between the negative pole being arranged on described battery pack and vehicle load, described negative switch is in series electrically connected with described battery pack and described vehicle load; Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected, and the described pre-charge resistance of series connection and described precharge switch are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and is connected between the positive pole of described positive switch and described battery pack by the second end of described precharge switch; First switch, the first end of described first switch is connected between the first end of described pre-charge resistance and the first end of described precharge switch, and the second end of described first switch is connected between described negative switch and described vehicle load; Battery management unit, for disconnecting described first switch and described positive switch, closed described negative switch and described precharge switch, being described vehicle load precharge by described battery pack; After precharge completes, described battery management unit is used for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; And when vehicle has an accident, described battery management unit is for disconnecting described positive switch and described negative switch, and closed described first switch, by described pre-charge resistance to be the electric discharge of described vehicle load.
According to an embodiment of the present invention, described battery management unit also for: after being powered to vehicle load by described battery pack, by closed described first Switch Controller battery pack heating and disconnect closed described first switch after having heated.
According to an embodiment of the present invention, wherein said battery management unit is also for the temperature of measuring described battery pack; By measured temperature compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch, to control the temperature of described battery pack.
According to an embodiment of the present invention, wherein said battery pack is the multiple battery units be in series electrically connected, and the distance that described pre-charge resistance is set between each battery unit in described multiple battery unit is equal.
According to an embodiment of the present invention, wherein said battery pack is dispelled the heat by the air cooling system of described vehicle; And described pre-charge resistance is arranged on the air intake place of described air cooling system.
According to an embodiment of the present invention, wherein said battery pack comprises the multiple battery units be in series electrically connected, described pre-charge resistance is several pre-charge resistances be in series electrically connected, and several pre-charge resistances described are evenly distributed in around described multiple battery unit.
According to an embodiment of the present invention, wherein said multiple battery unit is dispelled the heat by the liquid cooling system of described vehicle; Several pre-charge resistances described are near described multiple battery unit.
According to an embodiment of the present invention, described system also comprises: several second switches, and each in several second switches described is electrically connected in parallel with each pre-charge resistance in several pre-charge resistances described respectively; And described battery management unit is also for closed described first switch; Respectively closed or disconnect in second switch described in several each, to control the temperature of each in described multiple battery unit.
According to an embodiment of the present invention, wherein said battery management unit is used for: when vehicle has an accident, and receives the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, disconnect described positive switch and described negative switch, and closed described first switch is by described pre-charge resistance to be the electric discharge of described vehicle load.
According to an embodiment of the present invention, described battery management unit also for: when vehicle has an accident, when described positive switch and described negative switch cannot disconnect, disconnect described precharge switch and closed described first switch, consumed the energy of described battery pack by described pre-charge resistance.
According to an embodiment of the present invention, wherein metal-back is outside equipped with at described pre-charge resistance.
According to an embodiment of the present invention, described system also comprises: described pre-charge resistance is set to prism-shaped, cylindric or sheet.
According to a second aspect of the invention, provide a kind of Vehicular battery group management system, described system comprises: positive switch, is arranged between the positive pole of described battery pack and described vehicle load, and described positive switch is in series electrically connected with described battery pack and described vehicle load; Negative switch, is arranged between the negative pole of described battery pack and described vehicle load, and described negative switch is in series electrically connected with described battery pack and described vehicle load; Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected, and described pre-charge resistance and the described precharge switch of series connection are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and is connected between the positive pole of described positive switch and described battery pack by the second end of described precharge switch; First switch, the first end of described first switch to be connected between the first end and the first end of described precharge switch of described pre-charge resistance and to be connected between described negative switch and described vehicle load by the second end of described first switch; Battery management unit, for disconnecting described first switch and described positive switch, closed described negative switch and described precharge switch, being described vehicle load precharge by described battery pack; After precharge completes, described battery management unit is used for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; And detect described positive switch when vehicle has an accident and whether described negative switch cannot disconnect; When described positive switch and described negative switch cannot disconnect, described battery management unit is used for closed described first switch, is consumed the energy of described battery pack by described pre-charge resistance.
According to an embodiment of the present invention, described battery management unit is used for: when vehicle has an accident, and receives the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, detect described positive switch and whether described negative switch cannot disconnect.
According to an embodiment of the present invention, wherein said battery management unit also for: after being powered to vehicle load by described battery pack, by closed described first Switch Controller battery pack heating and disconnect closed described first switch after having heated.
According to an embodiment of the present invention, wherein said battery management unit is also for the temperature of measuring described battery pack; By measured temperature compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch, to control the temperature of described battery pack.
According to a third aspect of the invention we, provide a kind of Vehicular battery group management method, described method comprises: between the positive pole and vehicle load of described battery pack, in series arrange positive switch; Between the negative pole and vehicle load of described battery pack, in series negative switch is set; Between described battery pack and vehicle load, the pre-charge resistance be in series electrically connected and precharge switch are set, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between the positive pole of described positive switch and described battery pack; One first switch is set, the first end of described first switch is connected between the first end of described pre-charge resistance and the first end of described precharge switch and the second end of described first switch is connected between described negative switch and described vehicle load; Disconnect described first switch and described positive switch, closed described negative switch and described precharge switch, being described vehicle load precharge by described battery pack; After precharge completes, closed described positive switch and described negative switch, disconnect described precharge switch, to be powered to vehicle load by described battery pack; And when vehicle has an accident, disconnect described positive switch and described negative switch, and closed described first switch, by described pre-charge resistance to be the electric discharge of described vehicle load.
According to an embodiment of the present invention, wherein closed described positive switch and described negative switch after precharge completes, disconnect described precharge switch, with by described battery pack to after vehicle load is powered, described method also comprises: by closing or disconnecting described first switch, control the temperature of described battery pack.
According to an embodiment of the present invention, wherein by closing or disconnecting described first switch, the temperature controlling described battery pack comprises: the temperature measuring described battery pack; By measured temperature compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch, to control the temperature of described battery pack.
According to an embodiment of the present invention, wherein said battery pack is the multiple battery units be in series electrically connected, and described method also comprises: the distance be set between each battery unit in described multiple battery unit by described pre-charge resistance is equal.
According to an embodiment of the present invention, wherein said battery pack is dispelled the heat by the air cooling system of described vehicle; And described method also comprises: the air intake place described pre-charge resistance being arranged on described air cooling system.
According to an embodiment of the present invention, wherein said battery pack comprises the multiple battery units be in series electrically connected, described pre-charge resistance is several pre-charge resistances be in series electrically connected, and described method also comprises: be evenly distributed in around described multiple battery unit by several pre-charge resistances described.
According to an embodiment of the present invention, wherein said multiple battery unit is dispelled the heat by the liquid cooling system of described vehicle; And described method also comprises: by several pre-charge resistances described near described multiple battery unit.
According to an embodiment of the present invention, described method also comprises: be electrically connected in parallel with a second switch respectively by each pre-charge resistance in several pre-charge resistances described; And wherein by closing or disconnecting described first switch, the temperature controlling described battery pack comprises: closed described first switch; Respectively closed or disconnect in second switch described in several each, to control the temperature of each in described multiple battery unit.
According to an embodiment of the present invention, wherein when vehicle has an accident, disconnect described positive switch and described negative switch, and closed described first switch thinks that the electric discharge of described vehicle load comprises: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, disconnect described positive switch and described negative switch, and closed described first switch is by described pre-charge resistance to be the electric discharge of described vehicle load.
According to an embodiment of the present invention, described method also comprises: when vehicle has an accident, when described positive switch and described negative switch cannot disconnect, disconnect described precharge switch and closed described first switch, consumed the energy of described battery pack by described pre-charge resistance.
According to an embodiment of the present invention, described method also comprises: outside described pre-charge resistance, arrange metal-back.
According to an embodiment of the present invention, described method also comprises: described pre-charge resistance is set to prism-shaped, cylindric or sheet.
According to a forth aspect of the invention, provide a kind of Vehicular battery group management method, described method comprises: between the positive pole and vehicle load of described battery pack, in series arrange positive switch; Between the negative pole and vehicle load of described battery pack, in series negative switch is set; One pre-charge resistance be in series electrically connected and precharge switch is set between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between the positive pole of described positive switch and described battery pack; One first switch is set, the first end of the first switch is connected between the first end and the first end of described precharge switch of described pre-charge resistance and the second end of described first switch is connected between described negative switch and described vehicle load; Disconnect described first switch and described positive switch, closed described negative switch and described precharge switch, being described vehicle load precharge by described battery pack; After precharge completes, closed described positive switch and described negative switch, disconnect described precharge switch, to be powered to vehicle load by described battery pack; And detect described positive switch when vehicle has an accident and whether described negative switch cannot disconnect; When described positive switch and described negative switch cannot disconnect, closed described first switch, is consumed the energy of described battery pack by described pre-charge resistance.
According to an embodiment of the present invention, wherein detect described positive switch and described negative switch whether cannot disconnect comprising when vehicle has an accident: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, detect described positive switch and whether described negative switch cannot disconnect.
According to an embodiment of the present invention, wherein closed described positive switch and described negative switch after precharge completes, disconnect described precharge switch, with by described battery pack to after vehicle load is powered, described method also comprises: by closing or disconnecting described first switch, control the temperature of described battery pack.
According to an embodiment of the present invention, wherein by closing or disconnecting described first switch, the temperature controlling described battery pack comprises: the temperature measuring described battery pack; By measured temperature compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch, to control the temperature of described battery pack.
In a word, the Vehicular battery group management system that embodiments of the present invention provide and method, provide a kind of quick, reliable and safe scheme, effectively can not only avoid the immediate current spike in battery circuit, extend the useful life of each parts, battery can also be disconnected from vehicle load, and effectively by the residual charge electric discharge in vehicle load; Even if battery pack and vehicle load cannot disconnect, also vehicle load discharged by resistance, this scheme is effective and reliable; The temperature of vehicle battery packs can be controlled, control the heat around each region of battery pack respectively, respectively temperature is adjusted to each battery unit, the speed that battery pack heats up can be controlled simultaneously as required, heat is evenly distributed, to make all battery unit heating, there is identical temperature; The a large amount of amount of localized heat produced when can work to battery circuit manage; Self can produce the resistance of heat as heating element after using energising, not need to be set to the extra power supply that heater element is powered, simplify the structure of battery circuit, reduce cost; In addition, the Vehicular battery group management system that embodiments of the present invention provide and method be both applicable to the vehicle using air cooling system, were also applicable to the vehicle using liquid cooling system.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, and can become apparent, below especially exemplified by the specific embodiment of the present invention to allow above and other objects of the present invention, feature and advantage.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 be according to an embodiment of the present invention in for controlling the schematic diagram of the device of the temperature of battery pack;
Fig. 2 is the schematic diagram of multiple battery unit and several the first resistance in middle according to an embodiment of the present invention battery pack;
Fig. 3 is the curve chart of the voltage of vehicle load and the variations in temperature of battery pack when each switch closes or disconnects in system 100 according to an embodiment of the present invention;
Fig. 4 is the flow chart of Vehicular battery group management method 200 according to an embodiment of the present invention; And
Fig. 5 is the flow chart of Vehicular battery group management method 300 according to an embodiment of the present invention.
Embodiment
Below with reference to accompanying drawings illustrative embodiments of the present disclosure is described in more detail.Although show illustrative embodiments of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the execution mode of setting forth here.On the contrary, provide these execution modes to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.But achieve the present invention although should be appreciated that those skilled in the art can dream up clearly not describe in this manual or record and be included in the various structures in spirit of the present invention, principle and scope.The all examples quoted from this specification and conditional language are all for the object illustrated and instruct, principle prior art contributed to help reader understanding inventor and concept, and should be understood to be not limited to these the specifically example of citation and conditions.In addition, in order to be illustrated more clearly in, the detailed description for known devices, circuit and method is eliminated, not obscure description of the invention.Should be understood that unless stated otherwise, the feature in each execution mode described herein can combine mutually.
The quantity of each parts cited by it will be understood by those skilled in the art that in exemplary execution mode of the present invention is only for illustrative purposes, and not should be understood to limitation of the present invention.In the present invention, each parts can have other quantity, and do not depart from scope of the present invention.
In this manual, the function of each unit can realize by using specialized hardware or the hardware performing process that can combine with suitable software.Such hardware or specialized hardware can comprise application-specific integrated circuit (ASIC) (ASIC), various other circuit, various processors etc.When being realized by processor, this function can be provided by single application specific processor, single share processor or multiple independently processor (wherein some may be shared).In addition, processor should not be understood to specially to refer to can the hardware of executive software, but impliedly can comprise and be not limited to digital signal processor (DSP) hardware, be used for the read-only memory (ROM) of storing software, random access memory (RAM) and non-volatile memory apparatus.
Execution mode one
According to a first aspect of the invention, provide a kind of Vehicular battery group management system 100, described system 100 comprises: positive switch 120, between the positive pole being arranged on described battery pack 110 and vehicle load 101, described positive switch 120 is in series electrically connected with described battery pack 110 and described vehicle load 101, negative switch 130, between the negative pole being arranged on described battery pack 110 and vehicle load 101, described negative switch 130 is in series electrically connected with described battery pack 110 and described vehicle load 101, pre-charge resistance 140 and precharge switch 150, described pre-charge resistance 140 and described precharge switch 150 are in series electrically connected, and the described pre-charge resistance 140 of series connection and described precharge switch 150 are arranged between described battery pack 110 and vehicle load 101, wherein, the first end of described pre-charge resistance 140 is connected with the first end of described precharge switch 150, second end of described pre-charge resistance 140 is connected between described positive switch 120 and described vehicle load 101, and the second end of described precharge switch 150 is connected between described positive switch 120 and the positive pole of described battery pack 110, first switch 160, between the first end that the first end of described first switch 160 is connected to described pre-charge resistance 140 and the first end of described precharge switch 150, and the second end of described first switch 160 is connected between described negative switch 130 and described vehicle load 101, battery management unit 170, for disconnecting described first switch 160 and described positive switch 120, closed described negative switch 130 and described precharge switch 150, being the precharge of described vehicle load 101 by described battery pack 110, after precharge completes, described battery management unit 170, for closed described positive switch 120 and described negative switch 130, disconnects described precharge switch 150, to be powered to vehicle load 101 by described battery pack 110, and when vehicle has an accident, described battery management unit 170 is for disconnecting described positive switch 120 and described negative switch 130, and closed described first switch 160, to be discharged for described vehicle load 101 by described pre-charge resistance 140.
According to the embodiment of the present invention, battery pack 110, as lithium battery group, is other parts of the high-pressure system 100 to vehicle, as inverter or motor, and the power supply of power supply.
Fig. 1 shows a non-limiting and exemplary execution mode of the present invention.To should be appreciated that in Fig. 1 that the annexation of represented each unit is only example, those skilled in the art can adopt other annexation completely, as long as each unit also can realize function of the present invention under such annexation.
As shown in Figure 1, Vehicular battery group management system 100 according to an illustrative embodiment of the invention comprises positive switch 120 and negative switch 130.Between the positive pole that positive switch 120 is arranged on described battery pack 110 and described vehicle load 101, described positive switch 120 is in series electrically connected with described battery pack 110 and described vehicle load 101.Between the negative pole that negative switch 130 is arranged on described battery pack 110 and described vehicle load 101, described negative switch 130 is in series electrically connected with described battery pack 110 and described vehicle load 101.
System 100 also comprises pre-charge resistance 140 and precharge switch 150, described pre-charge resistance 140 and described precharge switch 150 are in series electrically connected, and described pre-charge resistance 140 and the described precharge switch 150 of series connection are arranged between described battery pack 110 and vehicle load 101, wherein, the first end of described pre-charge resistance 140 is connected with the first end of described precharge switch 150, second end of described pre-charge resistance 140 is connected between described positive switch 120 and described vehicle load 101, and the second end of described precharge switch 150 is connected between described positive switch 120 and the positive pole of described battery pack 110.
System 100 also comprises the first switch 160, between the first end that the first end of described first switch 160 is connected to described pre-charge resistance 140 and the first end of described precharge switch 150, and the second end of described first switch 160 is connected between described negative switch 130 and described vehicle load 101.
System 100 also comprises battery management unit 170, for disconnecting described first switch 160 and described positive switch 120, closed described negative switch 130 and described precharge switch 150, being the precharge of described vehicle load 101 by described battery pack 110.When positive switch 120, negative switch 130 and the first switch 160 all disconnect, in whole battery circuit, there is no electric current.If without pre-charge process, and normal power supply state battery pack 110 is directly set to vehicle load 101, positive switch 120 and negative switch 130 need be closed simultaneously, now can produce an immediate current spike in circuit, have a strong impact on the useful life of each element in battery circuit.Therefore, in closed positive switch 120 and negative switch 130 with before being powered to vehicle load 101 by battery pack 110, battery management unit 170 first disconnects described first switch 160 and described positive switch 120, makes circuit be in off-position; Then, battery management unit 170 closes precharge switch 150 and negative switch 130, now, pre-charge resistance 140 is connected in series with battery pack 110 and load 101, a part of load is served as by pre-charge resistance 140, thus avoid immediate current spike, extend the useful life of each element in battery circuit.After precharge completes, described battery management unit 170 is for closed described positive switch 120 and described negative switch 130, disconnect described precharge switch 150, to be powered to vehicle load 101 by described battery pack 110, now there is no electric current in pre-charge resistance 140.When vehicle has an accident, described battery management unit 170 is for disconnecting described positive switch 120 and described negative switch 130, to make power-off between battery pack 110 and vehicle load 101, and closed described first switch 160, now pre-charge resistance 140 and vehicle load 101 are connected in series, and are discharged for described vehicle load 101 by pre-charge resistance 140.
According to an illustrative embodiment of the invention, described battery management unit 170 also for: after being powered to vehicle load 101 by described battery pack 110, heat by closed described first switch 160 pairs of battery pack 110 and after having heated, disconnect closed described first switch 160.After being powered to vehicle load 101 by described battery pack 110, positive switch 120 and negative switch 130 all closed; When closed first switch 160, pre-charge resistance 140 is energized and produces heat thus heating battery group 110; After heating completes, when disconnecting the first switch 160, there is no electric current in pre-charge resistance 140, no longer produce heat, thus maintain the temperature of battery pack 110 or the temperature of battery pack 110 is reduced gradually through heat radiation.This mode self can produce the resistance of heat as heating element after using energising, does not need to be set to the extra power supply that heater element is powered, simplifies the structure of battery circuit, reduce cost.
According to an illustrative embodiment of the invention, described battery management unit 170 is also for the temperature of measuring described battery pack 110; By measured temperature compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described first switch 160; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch 160, to control the temperature of described battery pack 110.As shown in Figure 1, battery management unit 170 closes positive switch 120 and negative switch 130 to be powered to vehicle load by battery pack 110; Battery management unit 170 measures the temperature T of battery pack 110; By the temperature T of measured battery pack 110 and predetermined temperature threshold T 0compare, alternatively, predetermined temperature threshold T 0can be battery pack 110 operating efficiency the highest time temperature.Alternatively, described in the temperature T of battery pack 110 that detects can be the temperature directly recorded by a temperature sensor, also can be the mean value of the temperature that one group of temperature sensor detects or battery pack 110 temperature that draws according to other algorithms.When measured temperature T is less than temperature threshold T 0, closed first switch 160 of battery management unit 170, then pre-charge resistance 140 is electrically connected with battery pack 110 by the first switch 160 in parallel, produces heat after pre-charge resistance 140 is energized, thus heating battery group 110.When measured temperature T is equal to or greater than temperature threshold T 0, battery management unit 170 disconnects the first closed switch 160, then do not have electric current in pre-charge resistance 140, no longer produce heat, thus the temperature T of battery pack 110 is maintained temperature threshold T 0or make the temperature T of battery pack 110 be reduced to temperature threshold T gradually through heat radiation 0.This mode self can produce the resistance of heat as heating element after using energising, does not need to be set to the extra power supply that heater element is powered, simplifies the structure of battery circuit, reduce cost.
According to an illustrative embodiment of the invention, described battery pack 110 is the multiple battery unit 111-119 be in series electrically connected, and the distance that described pre-charge resistance 140 is set between each battery unit in described multiple battery unit 111-119 is equal.Alternatively, battery pack 110 can comprise multiple battery unit 111-119, and these battery units 111-119 with various combined serial and/or can be connected in parallel, to provide required voltage and energy.Such as, battery pack 110 can comprise multiple battery unit 111-119 be connected in series, the battery that each battery unit also can comprise multiple series connection and/or be connected in parallel.In order to pack, install, the object such as safety management and control, these battery units 111-119 can be set to independently module.Such as, one is had to the battery pack 110 of the battery that 96 are connected in series, battery pack 110 can be set to 12 battery units be connected in series, each battery unit can be set to independently module, and each module comprises 8 batteries be connected in series.The quantity of each parts cited by it will be understood by those skilled in the art that in exemplary execution mode of the present invention is only for illustrative purposes, and not should be understood to limitation of the present invention.In the present invention, each parts can have other quantity, and do not depart from scope of the present invention.Alternatively, multiple battery unit 111-119 can be evenly distributed on pre-charge resistance 140 for the center of circle circumferentially.Alternatively, multiple battery unit 111-119 can be evenly distributed on on pre-charge resistance 140 sphere that is the centre of sphere.This mode makes each battery unit in pre-charge resistance 140 pairs of battery pack 110 heat equably.
According to an illustrative embodiment of the invention, described battery pack 110 is dispelled the heat by the air cooling system of described vehicle; And described pre-charge resistance 140 is arranged on the air intake place of described air cooling system.Air in the air cooling system use driver's cabin of vehicle, as the source of heating or cool, heats battery pack 110 or dispels the heat.By pre-charge resistance 140 being arranged on the air intake place of described air cooling system, make air in driver's cabin through air intake place, the pre-charge resistance 140 being arranged on the air intake of described air cooling system heats, air after heating arrives fast and surrounds battery pack 110, heats battery pack 110.This mode, can be delivered to battery pack 110 quickly by heat, and adds the contact area that battery pack 110 participates in heat trnasfer, thus battery pack 110 is heated up quickly.
According to an illustrative embodiment of the invention, described battery pack 110 comprises the multiple battery unit 111-119 be in series electrically connected, described pre-charge resistance 140 is several pre-charge resistances be in series electrically connected, several pre-charge resistances 140 described are evenly distributed in around described multiple battery unit 111-119, more uniformly can control the temperature of battery pack 110.Alternatively, the quantity of battery unit 111-119 can equal the quantity of pre-charge resistance 140, also can be not equal to the quantity of pre-charge resistance 140.Alternatively, as shown in Figure 2, battery pack 110 can comprise multiple, as 9 battery unit 111-119 be in series electrically connected, pre-charge resistance 140 is several, as four pre-charge resistance 141-144 be in series electrically connected, these four pre-charge resistance 141-144 can be configured to be evenly distributed in battery pack 110, namely around battery unit 111-119.Alternatively, this battery pack 110 can have the battery unit 111-119 of other quantity.Alternatively, pre-charge resistance 140 also can be the pre-charge resistance of other quantity.Fig. 2 shows the schematic diagram of multiple battery unit 111-119 and several pre-charge resistances 140 in battery pack 110 according to an illustrative embodiment of the invention.As shown in Figure 2, when the battery unit 111-119 in battery pack 110 along a straight line successively equidistantly time, pre-charge resistance 141 can be arranged on battery unit 112 place, pre-charge resistance 142 is arranged on battery unit 114 place, pre-charge resistance 143 is arranged on battery unit 116 place, pre-charge resistance 144 is arranged on battery unit 118 place, to make each several part homogeneous heating of battery pack 110.Alternatively, four pre-charge resistance 141-144 can be set to a module, 9 battery unit 111-119 are evenly distributed on this module for the center of circle circumferentially.Alternatively, 9 battery unit 111-119 can be set to a module, four pre-charge resistance 141-144 be evenly distributed on on this module sphere that is the centre of sphere.Alternatively, 9 battery unit 111-119 can be set to a module, four pre-charge resistance 141-144 are evenly distributed on this module for the center of circle circumferentially.Alternatively, pre-charge resistance 140 can be arranged near battery pack 110, also can be set to distance battery pack 110 1 segment distance.
According to an illustrative embodiment of the invention, described multiple battery unit 111-119 is dispelled the heat by the liquid cooling system of described vehicle; Several pre-charge resistances 140 described near described multiple battery unit 111-119, to make heat can be directly delivered to battery pack 110 from pre-charge resistance 140, thus by each several part homogeneous heating of battery pack 110.As shown in Figure 2, the battery pack 110 of system 100 comprises 9 battery unit 111-119, and 4 pre-charge resistance 141-144 are evenly distributed in around battery unit 111-119.When battery pack 110 is dispelled the heat by the liquid cooling system of described vehicle, pre-charge resistance 141 is set near battery unit 112, pre-charge resistance 142 is set near battery unit 114, pre-charge resistance 143 is set near battery unit 116, pre-charge resistance 144 is set near battery unit 118, to make heat can be directly delivered to battery pack 110 from pre-charge resistance 140, thus by each several part homogeneous heating of battery pack 110.Alternatively, four pre-charge resistance 141-144 can be set to a module, 9 battery unit 111-119 are uniformly distributed near this module.Alternatively, 9 battery unit 111-119 can be set to a module, four pre-charge resistance 141-144 are uniformly distributed near this module.
According to an illustrative embodiment of the invention, system 100 also comprises: several second switches 181-184, and each in described several second switches 181-184 is electrically connected in parallel with each pre-charge resistance 140 in several pre-charge resistances 140 described respectively; And described battery management unit 170 is also for closed described first switch 160; Respectively closed or disconnect in second switch 181-184 described in several each, to control the temperature of each in described multiple battery unit 111-119.
As shown in Figure 2, described battery pack 110 comprises a Battery pack unit 111-119 of series connection, such as comprise a Battery pack unit 111-119 of 9 battery unit 111-119 of series connection, and several pre-charge resistances 140 of series connection, such as 4 pre-charge resistance 141-144.System 100 also comprises several second switches 181-184, such as 4 second switch 181-184, each second switch respectively 181-184 is electrically connected in parallel with a pre-charge resistance 140, such as second switch 181 is electrically connected in parallel with pre-charge resistance 141, second switch 182 is electrically connected in parallel with pre-charge resistance 142, second switch 183 is electrically connected in parallel with pre-charge resistance 143, and second switch 184 is electrically connected in parallel with pre-charge resistance 144.Battery management unit 170, also for closed positive switch 120 and negative switch 130, to be powered by battery pack 110 pairs of vehicle load, and closed first switch 160, is energized to make the pre-charge resistance 141-144 of series connection with it; Respectively closed or disconnect in second switch 181-184 described in several each, make the pre-charge resistance 141-144 short circuit in parallel with it respectively or normally work, to control the temperature of each in described multiple battery unit 111-119 respectively.Such as, closed positive switch 120 and negative switch 130, and after closed first switch 160, battery management unit 170 can closed second switch 182, makes pre-charge resistance 142 short circuit in parallel with it and does not produce heat; Disconnect second switch 181,183 and 184 simultaneously, make the pre-charge resistance 141,143 and 144 in parallel with it normally work and produce heat, thus heat the multiple battery unit 111-119 be arranged near pre-charge resistance 141,143 and 144.Alternatively, battery management unit 170 can close multiple second switch simultaneously, disconnects other second switches.Alternatively, battery management unit 170 can close multiple second switch 181-184 successively within multiple time interval, only closes a second switch, disconnect other second switches in each time interval.
According to an illustrative embodiment of the invention, alternatively, described battery management unit 170 communicates to connect with control unit for vehicle or air bag control unit.Described battery management unit 170 for: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, disconnect described positive switch 120 and described negative switch 130, and closed described first switch 160, to be discharged for described vehicle load 101 by described pre-charge resistance 140.
According to an illustrative embodiment of the invention, wherein said battery management unit 170 also for: when vehicle has an accident, when described positive switch 120 and described negative switch 130 cannot disconnect, disconnect described precharge switch 150 and closed described first switch 160, consumed the energy of described battery pack 110 by described pre-charge resistance 140.When positive switch 120 and negative switch 130 lost efficacy, cannot disconnect time, battery management unit 170 disconnects precharge switch 150 and closed described first switch 160, pre-charge resistance 140 is electrically connected, by the energy of pre-charge resistance 140 consuming cells group 110 with battery pack 110 and vehicle load 101.Whether detection positive switch 120 and negative switch 130 cannot disconnect and can use any mode of the prior art, such as, realize by detecting battery pack 110 temperature or testing circuit electric current etc.
According to an illustrative embodiment of the invention, wherein, metal-back is outside equipped with, with heat release more quickly and efficiently at described pre-charge resistance 140.
According to an illustrative embodiment of the invention, described pre-charge resistance 140 is set to prism-shaped, cylindric or sheet.
The curve chart of the voltage of vehicle load 101 and the variations in temperature of battery pack 110 when Fig. 3 shows that in system 100 according to the embodiment of the present invention, each switch closes or disconnects.
As shown in Figure 3, at time interval t 1in, battery management unit 170 disconnects positive switch 120, negative switch 130, precharge switch 150 and the first switch 160.Now, battery pack 110 is not powered to vehicle load 101, does not have electric current, not heating battery group 110 in pre-charge resistance 140, and the voltage of vehicle load 101 is 0, and the temperature T of battery pack 110 equals ambient temperature and lower than temperature threshold T 0.Alternatively, when vehicle has an accident, battery management unit 170 disconnects positive switch 120, negative switch 130, precharge switch 150, and closed first switch 160, vehicle load 101 is discharged by pre-charge resistance 140.
At time interval t 2in, cause producing immediate current spike in circuit in order to avoid closed positive switch 120 simultaneously and negative switch 130, battery management unit 170 makes the first switch 160 and positive switch 120 still remain open, and now circuit is in off-position; Then, battery management unit 170 closes precharge switch 150 and negative switch 130, now, pre-charge resistance 140 is connected in series with battery pack 110 and vehicle load 101, pre-charge resistance 140 serves as a part of load, powered to vehicle load 101 by battery pack 110, the voltage V of vehicle load 101 slowly rises, thus avoids immediate current spike.When the voltage V of vehicle load 101 reaches normal working voltage V 0time, closed positive switch 120, disconnect precharge switch 150, now no current in pre-charge resistance 140 subsequently, battery pack 110 is in the normal power supply state to vehicle load 101.At time interval t 2in, the first switch 160 remains open always, non-heating battery group 110, and the temperature T of battery pack 110 still equals ambient temperature and lower than temperature threshold T 0.
At time interval t 3in, battery management unit 170 makes positive switch 120 and negative switch 130 remain closed, and battery pack 110 is in the normal power supply state to vehicle load 101; Precharge switch 150 remains open, now no current in pre-charge resistance 140; The voltage V of vehicle load 101 remains on normal working voltage V 0.At time interval t 3in, the first switch 160 remains open always, does not have electric current, not heating battery group 110 in pre-charge resistance 140, and the temperature T of battery pack 110 still equals ambient temperature and lower than temperature threshold T 0.
At time interval t 4in, battery management unit 170 makes positive switch 120 and negative switch 130 remain closed, and battery pack 110 is in the normal power supply state to vehicle load 101; Precharge switch 150 remains open; The voltage V of vehicle load 101 remains on normal working voltage V 0.When battery management unit 170 detects that the temperature T of battery pack 110 is less than temperature threshold T 0, closed first switch 160, has electric current in pre-charge resistance 140 and produces heat, and heating battery group 110, the temperature T of battery pack 110 is increased to temperature threshold T 0.
At time interval t 5in, battery management unit 170 makes positive switch 120 and negative switch 130 remain closed, and battery pack 110 is in the normal power supply state to vehicle load 101; Precharge switch 150 remains open; The voltage V of vehicle load 101 remains on normal working voltage V 0.When battery management unit 170 detects that the temperature T of battery pack 110 is equal to or greater than temperature threshold T 0, disconnect the first switch 160, do not have electric current and no longer produce heat in pre-charge resistance 140, the temperature T of battery pack 110 remains on temperature threshold T 0or be reduced to temperature threshold T gradually through heat radiation 0.
At time interval t 6in, such as, when vehicle has an accident, battery management unit 170 disconnects described positive switch 120 and described negative switch 130, to make power-off between battery pack 110 and vehicle load 101, and closed described first switch 160, now pre-charge resistance 140 and vehicle load 101 are connected in series, and discharged, make the voltage of vehicle load 101 be reduced to 0 fast by pre-charge resistance 140 for described vehicle load 101.Now, pre-charge resistance 140 has electric current and produces heat, and of short duration heating battery group 110, and because discharge time is very short, therefore the temperature T of battery pack 110 rises and not obvious.
After electric discharge completely, at time interval t 7in, battery management unit 170 disconnects positive switch 120, negative switch 130, first switch 160 and precharge switch 150.Now, battery pack 110 is not powered to vehicle load 101, and do not have electric current, not heating battery group 110 in pre-charge resistance 140, the voltage of vehicle load 101 is 0, and the temperature T of battery pack 110 drops to ambient temperature gradually.Alternatively, battery management unit 170 can close the first switch 160 always, until carry out precharge to battery pack 110.
In a word, the Vehicular battery group management system 100 that embodiments of the present invention provide, provide a kind of quick, reliable and safe scheme, effectively can not only avoid the immediate current spike in battery circuit, extend the useful life of each parts, battery can also be disconnected from vehicle load 101, and effectively by the residual charge electric discharge in vehicle load 101; Even if battery pack 110 and vehicle load 101 cannot disconnect, also vehicle load 101 discharged by resistance, this scheme is effective and reliable; The temperature of vehicle battery packs 110 can be controlled, control the heat around each region of battery pack 110 respectively, respectively temperature is adjusted to each battery unit, the speed that battery pack 110 heats up can be controlled as required simultaneously, heat is evenly distributed, to make all battery unit 111-119 heating, there is identical temperature; The a large amount of amount of localized heat produced when can work to battery circuit manage; Self can produce the resistance of heat as heating element after using energising, not need to be set to the extra power supply that heater element is powered, simplify the structure of battery circuit, reduce cost; In addition, the Vehicular battery group management system 100 that embodiments of the present invention provide both had been applicable to the vehicle using air cooling system, was also applicable to the vehicle using liquid cooling system.
Execution mode two
According to a second aspect of the invention, provide a kind of Vehicular battery group management system 100, described system 100 comprises: positive switch 120, between the positive pole being arranged on described battery pack 110 and described vehicle load 101, described positive switch 120 is in series electrically connected with described battery pack 110 and described vehicle load 101, negative switch 130, between the negative pole being arranged on described battery pack 110 and described vehicle load 101, described negative switch 130 is in series electrically connected with described battery pack 110 and described vehicle load 101, pre-charge resistance 140 and precharge switch 150, described pre-charge resistance 140 and described precharge switch 150 are in series electrically connected, and described pre-charge resistance 140 and the described precharge switch 150 of series connection are arranged between described battery pack 110 and vehicle load 101, wherein, the first end of described pre-charge resistance 140 is connected with the first end of described precharge switch 150, second end of described pre-charge resistance 140 is connected between described positive switch 120 and described vehicle load 101, and the second end of described precharge switch 150 is connected between described positive switch 120 and the positive pole of described battery pack 110, first switch 160, the first end of described first switch 160 to be connected between the first end and the first end of described precharge switch 150 of described pre-charge resistance 140 and to be connected between described negative switch 130 and described vehicle load 101 by the second end of described first switch 160, battery management unit 170, for disconnecting described first switch 160 and described positive switch 120, closed described negative switch 130 and described precharge switch 150, being the precharge of described vehicle load 101 by described battery pack 110, after precharge completes, described battery management unit 170, for closed described positive switch 120 and described negative switch 130, disconnects described precharge switch 150, to be powered to vehicle load 101 by described battery pack 110, and detect described positive switch 120 when vehicle has an accident and whether described negative switch 130 cannot disconnect, when described positive switch 120 and described negative switch 130 cannot disconnect, described battery management unit 170, for closed described first switch 160, is consumed the energy of described battery pack 110 by described pre-charge resistance 140.
According to the embodiment of the present invention, battery pack 110, as lithium battery group, is other parts of the high-pressure system to vehicle, as inverter or motor, and the power supply of power supply.
As shown in Figure 1, Vehicular battery group management system 100 according to an illustrative embodiment of the invention comprises positive switch 120 and negative switch 130.Between the positive pole that positive switch 120 is arranged on described battery pack 110 and described vehicle load 101, described positive switch 120 is in series electrically connected with described battery pack 110 and described vehicle load 101.Between the negative pole that negative switch 130 is arranged on described battery pack 110 and described vehicle load 101, described negative switch 130 is in series electrically connected with described battery pack 110 and described vehicle load 101.
System 100 also comprises pre-charge resistance 140 and precharge switch 150, described pre-charge resistance 140 and described precharge switch 150 are in series electrically connected, and described pre-charge resistance 140 and the described precharge switch 150 of series connection are arranged between described battery pack 110 and vehicle load 101, wherein, the first end of described pre-charge resistance 140 is connected with the first end of described precharge switch 150, second end of described pre-charge resistance 140 is connected between described positive switch 120 and described vehicle load 101, and the second end of described precharge switch 150 is connected between described positive switch 120 and the positive pole of described battery pack 110.
System 100 also comprises the first switch 160, between the first end that the first end of described first switch 160 is connected to described pre-charge resistance 140 and the first end of described precharge switch 150, and the second end of described first switch 160 is connected between described negative switch 130 and described vehicle load 101.
System 100 also comprises battery management unit 170, for disconnecting described first switch 160 and described positive switch 120, closed described negative switch 130 and described precharge switch 150, being the precharge of described vehicle load 101 by described battery pack 110.When positive switch 120, negative switch 130 and the first switch 160 all disconnect, in whole battery circuit, there is no electric current.If without pre-charge process, and normal power supply state battery pack 110 is directly set to vehicle load 101, positive switch 120 and negative switch 130 need be closed simultaneously, now can produce an immediate current spike in circuit, have a strong impact on the useful life of each element in battery circuit.Therefore, in closed positive switch 120 and negative switch 130 with before being powered to vehicle load 101 by battery pack 110, battery management unit 170 first disconnects described first switch 160 and described positive switch 120, makes circuit be in off-position; Then, battery management unit 170 closes precharge switch 150 and negative switch 130, now, pre-charge resistance 140 is connected in series with battery pack 110 and load 101, a part of load is served as by pre-charge resistance 140, thus avoid immediate current spike, extend the useful life of each element in battery circuit.After precharge completes, described battery management unit 170 is for closed described positive switch 120 and described negative switch 130, disconnect described precharge switch 150, to be powered to vehicle load 101 by described battery pack 110, now there is no electric current in pre-charge resistance 140.When vehicle has an accident, described battery management unit 170 is also suitable for: detect described positive switch 120 when vehicle has an accident and whether described negative switch 130 disconnects; When positive switch 120 and negative switch 130 lost efficacy, cannot disconnect time, battery management unit 170 closes described first switch 160, pre-charge resistance 140 is electrically connected, by the energy of pre-charge resistance 140 consuming cells group 110 with battery pack 110 and vehicle load 101.
According to the embodiment of the present invention, described battery management unit 170 for: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, detect described positive switch 120 and whether described negative switch 130 cannot disconnect.Alternatively, battery management unit 170 communicates to connect with control unit for vehicle or air bag control unit.
According to the embodiment of the present invention, described battery management unit 170 also for: after being powered to vehicle load 101 by described battery pack 110, heat by closed described first switch 160 pairs of battery pack 110 and after having heated, disconnect closed described first switch 160.After being powered to vehicle load 101 by described battery pack 110, positive switch 120 and negative switch 130 all closed; Closed first switch 160 of battery management unit 170, pre-charge resistance 140 is energized and produces heat thus heating battery group 110; After heating completes, battery management unit 170 disconnects the first switch 160, does not have electric current, no longer produce heat in pre-charge resistance 140, thus maintains the temperature of battery pack 110 or the temperature of battery pack 110 is reduced gradually through heat radiation.This mode self can produce the resistance of heat as heating element after using energising, does not need to be set to the extra power supply that heater element is powered, simplifies the structure of battery circuit, reduce cost.
According to the embodiment of the present invention, described battery management unit 170 is also for the temperature of measuring described battery pack 110; By measured temperature compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described first switch 160; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch 160, to control the temperature of described battery pack 110.As shown in Figure 1, battery management unit 170 closes positive switch 120 and negative switch 130 to be powered to vehicle load 101 by battery pack 110; Battery management unit 170 measures the temperature T of battery pack 110; By the temperature T of measured battery pack 110 and predetermined temperature threshold T 0compare, alternatively, predetermined temperature threshold T 0can be battery pack 110 operating efficiency the highest time temperature.Alternatively, described in the temperature T of battery pack 110 that detects can be the temperature directly recorded by a temperature sensor, also can be the mean value of the temperature that one group of temperature sensor detects or battery pack 110 temperature that draws according to other algorithms.When measured temperature T is less than temperature threshold T 0, closed first switch 160 of battery management unit 170, then pre-charge resistance 140 is electrically connected with battery pack 110 by the first switch 160 in parallel, produces heat after pre-charge resistance 140 is energized, thus heating battery group 110.When measured temperature T is equal to or greater than temperature threshold T 0, battery management unit 170 disconnects the first closed switch 160, then do not have electric current in pre-charge resistance 140, no longer produce heat, thus the temperature T of battery pack 110 is maintained temperature threshold T 0or make the temperature T of battery pack 110 be reduced to temperature threshold T gradually through heat radiation 0.This mode self can produce the resistance of heat as heating element after using energising, does not need to be set to the extra power supply that heater element is powered, simplifies the structure of battery circuit, reduce cost.
Vehicular battery group management system 100 according to the embodiment of the present invention in two also be can be applicable to the foregoing description of the Vehicular battery group management system 100 in execution mode one, in order to concise and to the point object, do not repeat them here.
In a word, the Vehicular battery group management system 100 that embodiments of the present invention provide, provide a kind of quick, reliable and safe scheme, effectively can not only avoid the immediate current spike in battery circuit, extend the useful life of each parts, battery can also be disconnected from vehicle load 101, and effectively by the residual charge electric discharge in vehicle load 101; Even if battery pack 110 and vehicle load 101 cannot disconnect, also vehicle load 101 discharged by resistance, this scheme is effective and reliable; Can control the temperature of vehicle battery packs 110, control the heat around each region of battery pack 110 respectively, can control the speed that battery pack 110 heats up simultaneously as required, a large amount of amount of localized heat produced when can work to battery circuit manage; Self can produce the resistance of heat as heating element after using energising, not need to be set to the extra power supply that heater element is powered, simplify the structure of battery circuit, reduce cost.
Execution mode three
According to a third aspect of the invention we, corresponding to vehicle according to the invention batteries management system 100 as described in embodiment 1, provide a kind of Vehicular battery group management method 200.
Fig. 4 shows the flow chart of the Vehicular battery group management method 200 according to exemplary embodiment of the invention.
As shown in Figure 4, method 200 comprises: step S210: between the positive pole and vehicle load 101 of described battery pack 110, in series arrange positive switch 120; Step S220: negative switch 130 is in series set between the negative pole and vehicle load 101 of described battery pack 110; Step S230: the pre-charge resistance 140 be in series electrically connected and precharge switch 150 are set between described battery pack 110 and vehicle load 101, wherein, the first end of described pre-charge resistance 140 is connected with the first end of described precharge switch 150, second end of described pre-charge resistance 140 is connected between described positive switch 120 and described vehicle load 101, and the second end of described precharge switch 150 is connected between described positive switch 120 and the positive pole of described battery pack 110; Step S240: arrange one first switch 160, to be connected to the first end of described first switch 160 between the first end of described pre-charge resistance 140 and the first end of described precharge switch 150 and to be connected between described negative switch 130 and described vehicle load 101 by the second end of described first switch 160; Step S250: disconnect described first switch 160 and described positive switch 120, closed described negative switch 130 and described precharge switch 150, being the precharge of described vehicle load 101 by described battery pack 110; After precharge completes, closed described positive switch 120 and described negative switch 130, disconnect described precharge switch 150, to be powered to vehicle load 101 by described battery pack 110; And when vehicle has an accident, disconnect described positive switch 120 and described negative switch 130, and closed described first switch 160, to be discharged for described vehicle load 101 by described pre-charge resistance 140.
According to an illustrative embodiment of the invention, wherein closed described positive switch 120 and described negative switch 130 after precharge completes, disconnect described precharge switch 150, with by described battery pack 110 to after vehicle load 101 is powered, described method 200 also comprises: heated by closed described first switch 160 pairs of battery pack 110 and after having heated, disconnected closed described first switch 160.
According to an illustrative embodiment of the invention, by closing or disconnecting described first switch 160, the temperature controlling described battery pack 110 comprises: the temperature measuring described battery pack 110; By measured temperature compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described first switch 160; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch 160, to control the temperature of described battery pack 110.
According to an illustrative embodiment of the invention, wherein said battery pack 110 is the multiple battery unit 111-119 be in series electrically connected, and described method 200 also comprises: the distance be set between each battery unit in described multiple battery unit 111-119 by described pre-charge resistance 140 is equal.
According to an illustrative embodiment of the invention, wherein said battery pack 110 is dispelled the heat by the air cooling system of described vehicle; And described method 200 also comprises: the air intake place described pre-charge resistance 140 being arranged on described air cooling system.
According to an illustrative embodiment of the invention, wherein said battery pack 110 comprises the multiple battery unit 111-119 be in series electrically connected, described pre-charge resistance 140 is several pre-charge resistances 140 be in series electrically connected, and described method 200 also comprises: be evenly distributed in around described multiple battery unit 111-119 by several pre-charge resistances 140 described.
According to an illustrative embodiment of the invention, wherein said multiple battery unit 111-119 is dispelled the heat by the liquid cooling system of described vehicle; And described method 200 also comprises: by several pre-charge resistances 140 described near described multiple battery unit 111-119.
According to an illustrative embodiment of the invention, described method 200 also comprises: be electrically connected in parallel with a second switch respectively by each pre-charge resistance 140 in several pre-charge resistances 140 described; And wherein by closing or disconnecting described first switch 160, the temperature controlling described battery pack 110 comprises: closed described first switch 160; Respectively closed or disconnect in second switch 181-184 described in several each, to control the temperature of each in described multiple battery unit 111-119.
According to an illustrative embodiment of the invention, wherein when vehicle has an accident, disconnect described positive switch 120 and described negative switch 130, and closed described first switch 160 thinks that the electric discharge of described vehicle load 101 comprises: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, disconnect described positive switch 120 and described negative switch 130, and closed described first switch 160 thinks that described vehicle load 101 is discharged.
According to an illustrative embodiment of the invention, described method 200 also comprises: when vehicle has an accident, when described positive switch 120 and described negative switch 130 cannot disconnect, disconnect described precharge switch 150 and closed described first switch 160, by the energy of battery pack 110 described in described first resistance consumption.
According to an illustrative embodiment of the invention, described method 200 also comprises: outside described pre-charge resistance 140, arrange metal-back.
According to an illustrative embodiment of the invention, described method 200 also comprises: described pre-charge resistance 140 is set to prism-shaped, cylindric or sheet.
The method 200 of vehicle according to the invention battery set management also be can be applicable to the foregoing description of Vehicular battery group management system 100 in execution mode one, in order to concise and to the point object, do not repeat them here.
In a word, the Vehicular battery group management method that embodiments of the present invention provide, provide a kind of quick, reliable and safe scheme, effectively can not only avoid the immediate current spike in battery circuit, extend the useful life of each parts, battery can also be disconnected from vehicle load 101, and effectively by the residual charge electric discharge in vehicle load 101; Even if battery pack 110 and vehicle load 101 cannot disconnect, also vehicle load 101 discharged by resistance, this scheme is effective and reliable; The temperature of vehicle battery packs 110 can be controlled, control the heat around each region of battery pack 110 respectively, respectively temperature is adjusted to each battery unit 111-119, the speed that battery pack 110 heats up can be controlled as required simultaneously, heat is evenly distributed, to make all battery unit 111-119 heating, there is identical temperature; The a large amount of amount of localized heat produced when can work to battery circuit manage; Self can produce the resistance of heat as heating element after using energising, not need to be set to the extra power supply that heater element is powered, simplify the structure of battery circuit, reduce cost; In addition, the Vehicular battery group management system 100 that embodiments of the present invention provide and method be both applicable to the vehicle using air cooling system, were also applicable to the vehicle using liquid cooling system.
Execution mode four
According to a forth aspect of the invention, corresponding to vehicle according to the invention batteries management system 100 as described in embodiment 2, provide a kind of Vehicular battery group management method 300.
Fig. 5 shows the flow chart of the Vehicular battery group management method 300 according to exemplary embodiment of the invention.
As shown in Figure 5, method 300 comprises: step S310: between the positive pole and vehicle load 101 of described battery pack 110, in series arrange positive switch 120; Step S320: negative switch 130 is in series set between the negative pole and vehicle load 101 of described battery pack 110; Step S330 a: pre-charge resistance be in series electrically connected 140 and precharge switch 150 are set between described battery pack 110 and vehicle load 101, wherein, the first end of described pre-charge resistance 140 is connected with the first end of described precharge switch 150, second end of described pre-charge resistance 140 is connected between described positive switch 120 and described vehicle load 101, and the second end of described precharge switch 150 is connected between described positive switch 120 and the positive pole of described battery pack 110; Step S340: arrange one first switch 160, to be connected to the first end of the first switch 160 between the first end and the first end of described precharge switch 150 of described pre-charge resistance 140 and to be connected between described negative switch 130 and described vehicle load 101 by the second end of described first switch 160; Step S350: disconnect described first switch 160 and described positive switch 120, closed described negative switch 130 and described precharge switch 150, being the precharge of described vehicle load 101 by described battery pack 110; After precharge completes, closed described positive switch 120 and described negative switch 130, disconnect described precharge switch 150, to be powered to vehicle load 101 by described battery pack 110; And detect described positive switch 120 when vehicle has an accident and whether described negative switch 130 cannot disconnect; When described positive switch 120 and described negative switch 130 cannot disconnect, closed described first switch 160, is consumed the energy of described battery pack 110 by described pre-charge resistance 140.
According to an illustrative embodiment of the invention, wherein detect described positive switch 120 and described negative switch 130 whether cannot disconnect comprising when vehicle has an accident: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, detect described positive switch 120 and whether described negative switch 130 cannot disconnect.
According to an illustrative embodiment of the invention, wherein closed described positive switch 120 and described negative switch 130 after precharge completes, disconnect described precharge switch, with by described battery pack 110 to after vehicle load 101 is powered, described method also comprises: heated by closed described first switch 160 pairs of battery pack 110 and after having heated, disconnected closed described first switch 160.
According to an illustrative embodiment of the invention, wherein by closing or disconnecting described first switch 160, the temperature controlling described battery pack 110 comprises: the temperature measuring described battery pack 110; By measured temperature compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described first switch 160; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch 160, to control the temperature of described battery pack 110.
The method 300 of vehicle according to the invention battery set management also be can be applicable to the foregoing description of Vehicular battery group management system 100 in execution mode two, in order to concise and to the point object, do not repeat them here.
In a word, the Vehicular battery group management method that embodiments of the present invention provide, provide a kind of quick, reliable and safe scheme, effectively can not only avoid the immediate current spike in battery circuit, extend the useful life of each parts, battery can also be disconnected from vehicle load 101, and effectively by the residual charge electric discharge in vehicle load 101; Even if battery pack 110 and vehicle load 101 cannot disconnect, also vehicle load 101 discharged by resistance, this scheme is effective and reliable; Can control the temperature of vehicle battery packs 110, control the heat around each region of battery pack 110 respectively, can control the speed that battery pack 110 heats up simultaneously as required, a large amount of amount of localized heat produced when can work to battery circuit manage; Self can produce the resistance of heat as heating element after using energising, not need to be set to the extra power supply that heater element is powered, simplify the structure of battery circuit, reduce cost.
In this manual, a large amount of details is described.But, should be appreciated that embodiments of the present invention can be implemented when not having these details.In some embodiments, be not shown specifically known method, structure and technology, not make reader obscure the understanding of the principle to this specification.
It will be understood by those skilled in the art that and can the module in the device in each execution mode adaptively be changed, and they are arranged in one or more devices different from this execution mode.Except the situation that feature or process are mutually repelled, any combination can be adopted, to method any disclosed in this specification in steps or all modules of any device combine.Unless expressly stated otherwise, each feature disclosed in this specification can by providing identical, equivalent or similar object alternative features replaces.
The present invention will be described instead of limit the invention to it should be noted that above-mentioned execution mode, and those skilled in the art are not when departing from the scope of claims, can design various alternate embodiments.In detail in the claims, the sequence of feature does not also mean that any particular order of feature, and especially, in claim to a method each step order and do not mean that these steps must perform according to this order.On the contrary, these steps can perform with any order suitably.In detail in the claims, any reference marker being positioned at bracket should be understood as limitations on claims.Term " comprises " or " comprising " is not got rid of existence and do not arrange module in the claims or step.The term "a" or "an" be positioned at before module or step is not got rid of and be there is multiple such module or step.The use of term " first ", " second " and " the 3rd " etc. does not represent any order, can be title by these terminological interpretations.

Claims (32)

1. a Vehicular battery group management system, is characterized in that, described system comprises:
Positive switch, between the positive pole being arranged on described battery pack and vehicle load, described positive switch is in series electrically connected with described battery pack and described vehicle load;
Negative switch, between the negative pole being arranged on described battery pack and vehicle load, described negative switch is in series electrically connected with described battery pack and described vehicle load;
Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected, and the described pre-charge resistance of series connection and described precharge switch are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and is connected between the positive pole of described positive switch and described battery pack by the second end of described precharge switch;
First switch, the first end of described first switch is connected between the first end of described pre-charge resistance and the first end of described precharge switch, and the second end of described first switch is connected between described negative switch and described vehicle load;
Battery management unit, for disconnecting described first switch and described positive switch, closed described negative switch and described precharge switch, being described vehicle load precharge by described battery pack; After precharge completes, described battery management unit is used for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; And when vehicle has an accident, described battery management unit is for disconnecting described positive switch and described negative switch, and closed described first switch, by described pre-charge resistance to be the electric discharge of described vehicle load.
2. the system as claimed in claim 1, wherein said battery management unit also for:
After being powered to vehicle load by described battery pack, heat by closed described first Switch Controller battery pack and after having heated, disconnect closed described first switch.
3. system as claimed in claim 2, wherein said battery management unit also for:
Measure the temperature of described battery pack;
By measured temperature compared with predetermined temperature threshold;
When measured temperature is less than described temperature threshold, closed described first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch, to control the temperature of described battery pack.
4. system as claimed in claim 2, wherein said battery pack is the multiple battery units be in series electrically connected, and the distance that described pre-charge resistance is set between each battery unit in described multiple battery unit is equal.
5. system as claimed in claim 2, wherein said battery pack is dispelled the heat by the air cooling system of described vehicle; And described pre-charge resistance is arranged on the air intake place of described air cooling system.
6. system as claimed in claim 2, wherein said battery pack comprises the multiple battery units be in series electrically connected, described pre-charge resistance is several pre-charge resistances be in series electrically connected, and several pre-charge resistances described are evenly distributed in around described multiple battery unit.
7. system as claimed in claim 6, wherein said multiple battery unit is dispelled the heat by the liquid cooling system of described vehicle; Several pre-charge resistances described are near described multiple battery unit.
8. system as claimed in claims 6 or 7, also comprises:
Several second switches, each in several second switches described is electrically connected in parallel with each pre-charge resistance in several pre-charge resistances described respectively; And described battery management unit also for:
Closed described first switch;
Respectively closed or disconnect in second switch described in several each, to control the temperature of each in described multiple battery unit.
9. the system as claimed in claim 1, wherein said battery management unit is used for:
When vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit;
In response to described trouble signal, disconnect described positive switch and described negative switch, and closed described first switch is by described pre-charge resistance to be the electric discharge of described vehicle load.
10. the system as claimed in claim 1, wherein said battery management unit also for:
When vehicle has an accident, when described positive switch and described negative switch cannot disconnect, disconnect described precharge switch and closed described first switch, consumed the energy of described battery pack by described pre-charge resistance.
11. the system as claimed in claim 1, wherein
Metal-back is outside equipped with at described pre-charge resistance.
12. the system as claimed in claim 1, also comprise:
Described pre-charge resistance is set to prism-shaped, cylindric or sheet.
13. 1 kinds of Vehicular battery group management systems, is characterized in that, described system comprises:
Positive switch, is arranged between the positive pole of described battery pack and described vehicle load, and described positive switch is in series electrically connected with described battery pack and described vehicle load;
Negative switch, is arranged between the negative pole of described battery pack and described vehicle load, and described negative switch is in series electrically connected with described battery pack and described vehicle load;
Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected, and described pre-charge resistance and the described precharge switch of series connection are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and is connected between the positive pole of described positive switch and described battery pack by the second end of described precharge switch;
First switch, the first end of described first switch to be connected between the first end and the first end of described precharge switch of described pre-charge resistance and to be connected between described negative switch and described vehicle load by the second end of described first switch;
Battery management unit, for disconnecting described first switch and described positive switch, closed described negative switch and described precharge switch, being described vehicle load precharge by described battery pack; After precharge completes, described battery management unit is used for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; And detect described positive switch when vehicle has an accident and whether described negative switch cannot disconnect; When described positive switch and described negative switch cannot disconnect, described battery management unit is used for closed described first switch, is consumed the energy of described battery pack by described pre-charge resistance.
14. systems as claimed in claim 13, wherein said battery management unit is used for:
When vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit;
In response to described trouble signal, detect described positive switch and whether described negative switch cannot disconnect.
15. systems as claimed in claim 13, wherein said battery management unit also for:
After being powered to vehicle load by described battery pack, heat by closed described first Switch Controller battery pack and after having heated, disconnect closed described first switch.
16. systems as claimed in claim 15, wherein said battery management unit also for:
Measure the temperature of described battery pack;
By measured temperature compared with predetermined temperature threshold;
When measured temperature is less than described temperature threshold, closed described first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch, to control the temperature of described battery pack.
17. 1 kinds of Vehicular battery group management methods, is characterized in that, described method comprises:
Between the positive pole and vehicle load of described battery pack, in series positive switch is set;
Between the negative pole and vehicle load of described battery pack, in series negative switch is set;
Between described battery pack and vehicle load, the pre-charge resistance be in series electrically connected and precharge switch are set, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between the positive pole of described positive switch and described battery pack;
One first switch is set, the first end of described first switch is connected between the first end of described pre-charge resistance and the first end of described precharge switch and the second end of described first switch is connected between described negative switch and described vehicle load;
Disconnect described first switch and described positive switch, closed described negative switch and described precharge switch, being described vehicle load precharge by described battery pack; After precharge completes, closed described positive switch and described negative switch, disconnect described precharge switch, to be powered to vehicle load by described battery pack; And when vehicle has an accident, disconnect described positive switch and described negative switch, and closed described first switch, by described pre-charge resistance to be the electric discharge of described vehicle load.
18. methods as claimed in claim 17, wherein closed described positive switch and described negative switch after precharge completes, disconnect described precharge switch, with by described battery pack to after vehicle load is powered, described method also comprises:
Heat by closed described first Switch Controller battery pack and after having heated, disconnect closed described first switch.
19. methods as claimed in claim 18, wherein by closing or disconnecting described first switch, the temperature controlling described battery pack comprises:
Measure the temperature of described battery pack;
By measured temperature compared with predetermined temperature threshold;
When measured temperature is less than described temperature threshold, closed described first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch, to control the temperature of described battery pack.
20. methods as claimed in claim 18, wherein said battery pack is the multiple battery units be in series electrically connected, and described method also comprises:
The distance be set between each battery unit in described multiple battery unit by described pre-charge resistance is equal.
21. methods as claimed in claim 18, wherein said battery pack is dispelled the heat by the air cooling system of described vehicle; And described method also comprises:
Described pre-charge resistance is arranged on the air intake place of described air cooling system.
22. methods as claimed in claim 18, wherein said battery pack comprises the multiple battery units be in series electrically connected, and described pre-charge resistance is several pre-charge resistances be in series electrically connected, and described method also comprises:
Several pre-charge resistances described are evenly distributed in around described multiple battery unit.
23. methods as claimed in claim 22, wherein said multiple battery unit is dispelled the heat by the liquid cooling system of described vehicle; And described method also comprises:
By several pre-charge resistances described near described multiple battery unit.
24. methods as described in claim 22 or 23, also comprise:
Each pre-charge resistance in several pre-charge resistances described is electrically connected in parallel with a second switch respectively; And
Wherein by closing or disconnecting described first switch, the temperature controlling described battery pack comprises:
Closed described first switch;
Respectively closed or disconnect in second switch described in several each, to control the temperature of each in described multiple battery unit.
25. methods as claimed in claim 17, wherein when vehicle has an accident, disconnect described positive switch and described negative switch, and closed described first switch thinks that the electric discharge of described vehicle load comprises:
When vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit;
In response to described trouble signal, disconnect described positive switch and described negative switch, and closed described first switch is by described pre-charge resistance to be the electric discharge of described vehicle load.
26. methods as claimed in claim 17, also comprise:
When vehicle has an accident, when described positive switch and described negative switch cannot disconnect, disconnect described precharge switch and closed described first switch, consumed the energy of described battery pack by described pre-charge resistance.
27. methods as claimed in claim 17, also comprise:
Outside described pre-charge resistance, metal-back is set.
28. methods as claimed in claim 17, also comprise:
Described pre-charge resistance is set to prism-shaped, cylindric or sheet.
29. 1 kinds of Vehicular battery group management methods, is characterized in that, described method comprises:
Between the positive pole and vehicle load of described battery pack, in series positive switch is set;
Between the negative pole and vehicle load of described battery pack, in series negative switch is set;
One pre-charge resistance be in series electrically connected and precharge switch is set between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between the positive pole of described positive switch and described battery pack;
One first switch is set, the first end of the first switch is connected between the first end and the first end of described precharge switch of described pre-charge resistance and the second end of described first switch is connected between described negative switch and described vehicle load;
Disconnect described first switch and described positive switch, closed described negative switch and described precharge switch, being described vehicle load precharge by described battery pack; After precharge completes, closed described positive switch and described negative switch, disconnect described precharge switch, to be powered to vehicle load by described battery pack; And detect described positive switch when vehicle has an accident and whether described negative switch cannot disconnect; When described positive switch and described negative switch cannot disconnect, closed described first switch, is consumed the energy of described battery pack by described pre-charge resistance.
Whether 30. methods as claimed in claim 29, wherein detect described positive switch and described negative switch and cannot disconnect and comprising when vehicle has an accident:
When vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit;
In response to described trouble signal, detect described positive switch and whether described negative switch cannot disconnect.
31. methods as claimed in claim 29, wherein closed described positive switch and described negative switch after precharge completes, disconnect described precharge switch, with by described battery pack to after vehicle load is powered, described method also comprises:
Heat by closed described first Switch Controller battery pack and after having heated, disconnect closed described first switch.
32. methods as claimed in claim 31, wherein by closing or disconnecting described first switch, the temperature controlling described battery pack comprises:
Measure the temperature of described battery pack;
By measured temperature compared with predetermined temperature threshold;
When measured temperature is less than described temperature threshold, closed described first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described first switch, to control the temperature of described battery pack.
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CN114889429A (en) * 2022-06-02 2022-08-12 法法汽车(中国)有限公司 Self-adaptation power supply unit and electric automobile
CN114889429B (en) * 2022-06-02 2025-03-18 法法汽车(中国)有限公司 Adaptive power supply equipment and electric vehicle
DE102022132413A1 (en) 2022-12-06 2024-06-06 Webasto SE Method for current limitation for a multipack battery system during pre-charging of external capacities, a battery control device, a computer program, a computer-readable storage medium, a battery and a motor vehicle

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