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CN114763068A - Vehicle charger system and charging method - Google Patents

Vehicle charger system and charging method Download PDF

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Publication number
CN114763068A
CN114763068A CN202110052966.XA CN202110052966A CN114763068A CN 114763068 A CN114763068 A CN 114763068A CN 202110052966 A CN202110052966 A CN 202110052966A CN 114763068 A CN114763068 A CN 114763068A
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CN
China
Prior art keywords
battery pack
battery
voltage
vehicle
portable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110052966.XA
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Chinese (zh)
Other versions
CN114763068B (en
Inventor
许祎凡
黄伟东
邱凯
谢家喜
娄豫皖
孟祎凡
李紫璇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Yizeng Power New Energy Technology Co ltd
Original Assignee
Shanghai Binei Information Technology Co ltd
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Priority to CN202110052966.XA priority Critical patent/CN114763068B/en
Publication of CN114763068A publication Critical patent/CN114763068A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The application relates to a vehicle charger baby system and a charging method, and belongs to the technical field of mobile energy storage. The method comprises the following steps: the system comprises a portable battery pack, a multi-source DC/DC and DC/AC, a communication wiring harness, a power wiring harness, a relay and a control system. The portable battery packs are sequentially connected with the multi-source DC/DC and DC/AC input ends, and the multi-source DC/DC and DC/AC output ends are connected with the input end of the whole vehicle high-voltage box through a power wiring harness. The energy of the plurality of portable battery packs is connected with the vehicle-mounted main battery in parallel to supply power to the motor of the whole vehicle; when the vehicle is locked by the vehicle main battery feed, the portable battery pack and the DC/AC provide 220V/380V alternating current power supply for a slow charging machine carried by the whole vehicle. The battery replacement can be operated by the applicant, so that the safe operation of the battery is ensured, and the battery is suitable for vehicle types with different voltage grades; the charger is prevented from feeding back and charging the vehicle-mounted main current and the large current, so that the whole vehicle control system misjudges that the vehicle-mounted main battery has the large current to feed back for a long time and cuts off a power loop.

Description

Vehicle charger system and charging method
Technical Field
The application relates to a vehicle power bank charging system and a charging method, in particular to a power bank charging system and a charging method for a new energy vehicle, and belongs to the technical field of mobile energy storage.
Background
Along with the development of battery technology and the popularization of charging piles, the driving distance of the electric automobile is more and more far, the application range is wider and wider, but the anxiety about the driving distance of the electric automobile and the worry about emergency charging never stop.
In order to supplement charge for emergency and increase the driving range of the electric vehicle, in the CN103419675A patent, an engine and generator integrated machine is used as a range extender for providing electric energy for the electric vehicle when the electric quantity is low, so as to increase the driving distance of the electric vehicle. In the CN110550137A patent, a methanol fuel generator is used to supplement the electric power to one battery pack with lower electric power, and another battery pack with higher electric power supplies the electric power to the outside, so as to supplement the electric power to the two battery packs alternately, thereby achieving the purpose of increasing the range of the electric vehicle. The above patent adopts exogenous petrochemical fuel to supplement and charge the battery on the electric vehicle through the engine/generator, and realizes the range extension of the electric vehicle in principle, but the goals of energy conservation and emission reduction of new energy vehicles are lost.
In patents CN110293865A, CN109849717A, CN106208249A, CN109927569A, CN111731126A, CN111746322A, CN210941368U, CN204290422U, CN205407370U, and CN205440015U, etc., the electric vehicle is charged with the electric energy of the portable power source by the charging module, so as to improve the driving range of the electric vehicle. In the CN105978076B patent, a BMS in a portable power source communicates with a battery system in an electric vehicle to control an inverter power source to perform ac charging or dc charging on a vehicle-mounted battery, or to issue a request for driving while charging to an electric vehicle control system. The above patents basically supplement and charge the electric quantity of the mobile power supply to the whole vehicle through the inverter power supply through the charging port, and the method for supplementing and charging the vehicle-mounted battery is simple and convenient, but has the defects of low power supplementing speed, low conversion efficiency and the like.
In the CN104103865A patent, a range-extended battery pack is connected in parallel with a vehicle-mounted main battery through a high-voltage switch, data such as voltage and temperature of the range-extended battery pack is uploaded to a BMS (battery management system) of a vehicle-mounted main battery system by a collecting board, and the input and output of the range-extended battery pack are managed by controlling the high-voltage parallel switch by the main battery system BMS. In CN205632165U, the positive and negative electrodes of the range-extended battery pack are connected to the positive and negative electrodes of the vehicle-mounted main battery pack through contactors, and the vehicle controller turns on and off the contactors according to the magnitude of the parallel current. The two patents directly connect the range-extending battery and the vehicle-mounted main battery in parallel for use, so that the energy conversion efficiency of the battery is improved. However, it should be noted that the extended-range battery pack and the vehicle-mounted main battery pack can be connected in parallel only when the voltages of the extended-range battery pack and the vehicle-mounted main battery pack are close to each other, when the voltage difference is too large, the two groups of batteries are connected in parallel to generate a large circulating current, and when the voltage difference is not controlled properly, the two groups of batteries can be overcharged or overdischarged at the same time to damage the two groups of batteries, and even a safety accident may occur. Meanwhile, for self safety, when the whole vehicle control system detects that the vehicle-mounted main battery has large current feedback for a long time, a power loop is automatically cut off, the extended-range battery pack is failed to be connected in parallel, and the vehicle stops running.
Disclosure of Invention
In order to solve the problems, the application provides a vehicle charger system, which comprises a portable battery pack, a multi-source DC (direct current)/DC and DC/AC (alternating current), a relay, a communication wire harness, a power wire harness, a control system and the like. The portable battery packs are sequentially connected to a multi-source DC/DC input end, a multi-source DC/DC output end is connected with an input end of a whole vehicle high-voltage box through a power wiring harness, a relay is arranged between the multi-source DC/DC and DC/AC output ends and the input end of the whole vehicle high-voltage box, the relay controls the connection and disconnection of the power wiring harness and the input end of the whole vehicle high-voltage box, and the multi-source DC/DC automatically adjusts output voltage to be close to the voltage of a vehicle main battery; the multi-source DC/DC adjusts the maximum output power of the DC/DC according to parameters such as the parallel access number of the portable battery packs, the battery temperature, the battery SOC (state of charge) and the like; the on-off of the relay is determined by a control system according to the conditions of the SOC of the portable battery pack, the voltage of the high-voltage box and the like; the DC/AC can provide 220V/380V alternating current power supply for a slow charging machine carried by the whole vehicle. The energy of the portable battery packs is connected with the vehicle-mounted main battery in parallel through the multi-source DC/DC to supply power to a motor of the whole vehicle, and the charging and discharging process is still controlled by the BMS of the whole vehicle, so that the charging treasure is prevented from being connected with the vehicle-mounted main battery in parallel and the running mileage of the whole vehicle is improved; when the vehicle is locked by the vehicle main battery feed, the portable battery pack and the DC/AC provide 220V/380V alternating current power supply for a slow charging machine carried by the whole vehicle, and provide emergency charging power supply. An automatic temperature control system is arranged in the portable battery pack, so that the battery can work under a proper temperature condition, the performance of the battery is improved, and the service life of the battery is prolonged; the control system can provide monitoring and protection for the battery in the portable battery pack under the abnormal conditions of current, voltage, temperature, insulation and the like.
This application portable battery package, the portable low voltage battery package of a lightweight that comprises parts such as high specific energy group battery, control panel, equalizer plate, battery box, activation module, charge and discharge socket and communication socket. The battery pack is internally provided with a battery pack with high specific energy, high specific power, long service life and high safety, and the voltage of the battery pack is between 10 and 100V, preferably 12V, 24V, 36V, 48V, 60V and 72V; the weight of each bag is not more than 25kg, so that the bag is convenient to install, transport and operate; the voltage grades of the portable battery packs can be the same or different; various probes and control panels are installed in the portable battery pack, and parameters such as voltage, temperature, SOC (system on chip), SOH (state of health) and the like of each single battery are monitored and controlled in real time, so that the safe operation of the battery is ensured. The equalizing plate can supplement the electric quantity to the weak battery in the long-term operation process of the portable battery pack, and the consistency of the batteries is ensured. The activation module can automatically judge the connection between the portable battery pack and the multi-source DC/DC after the portable battery pack is connected with the multi-source DC/DC input end.
The control system collects parameters such as current, voltage and temperature of the portable battery pack during charging and discharging in real time through the communication wiring harness, when the current, the voltage and the temperature of the battery are abnormal, an alarm or a protection signal is timely output to request the charger and the multisource DC/DC or DC/AC to stop charging and discharging, the relay is forcibly disconnected under extreme conditions, the input and the output of the battery are timely controlled, and the battery is prevented from being overcharged or overdischarged. The control system automatically starts the heating or cooling assembly in the portable battery pack in due time, adjusts the temperature in the battery pack, ensures that the battery works under the proper temperature condition, improves the performance of the battery and prolongs the service life of the battery.
The multi-source DC/DC and DC/AC have multi-channel input, and each channel of input can automatically adjust input power according to parameters such as battery voltage, SOC and temperature; the multisource DC/DC output end is connected with the input end of the whole vehicle high-voltage box, the relay is closed when the multisource DC/DC automatically adjusts the output voltage to be close to the voltage of the vehicle-mounted main battery, the energy of the portable battery pack is preferentially output and used, and the activation module can automatically judge whether the portable battery pack is connected or cut out to be connected with the multisource DC/DC according to the voltage, the temperature, the SOC and other parameters of the portable battery pack after the portable battery pack is connected with the multisource DC/DC input end. The multisource DC/DC automatically adjusts the maximum output power of the multisource DC/DC according to the access number of the portable battery packs, the battery temperature, the SOC and other states; the relay controls the on-off of the power wire harness and the input end of the high-voltage box; when the vehicle is locked by the vehicle battery feed, the portable battery pack and the DC/AC provide 220V/380V alternating current power supply for a slow charging machine carried by the vehicle, and the portable battery pack supplies power to a motor of the vehicle for running after the vehicle is subjected to charging and unlocking.
The application has the following technical effects and advantages:
1. a plurality of portable battery packs with the weight smaller than 25kg are used as energy sources of the charger, and the portable battery packs can be manually operated to exchange electricity without external tool equipment while being convenient to transport relative to chassis exchange electricity and large-capacity battery pack exchange electricity. The voltage of the portable battery pack is less than 100V, safety is guaranteed during charging and discharging and use, and the portable battery pack can be exchanged with other low-voltage electric equipment battery packs, such as 48V, 60V, 72V battery packs for electric bicycles and electric tricycles.
2. The portable battery pack with the multi-path input has the advantages that the DC/DC and the DC/AC with the multi-path input are adopted, the voltage and the capacity of the portable battery pack with the multi-path input can be the same or different, and the battery source of the charger is increased.
The maximum output power of the multi-source DC/DC is adjusted by the multi-source DC/DC according to parameters such as the number of the portable battery packs connected in parallel, the battery temperature, the battery SOC and the like, and the portable battery packs are automatically connected in or out through the activation module, so that the portable battery packs are prevented from overflowing or overdischarging.
3. The multi-source DC/DC automatically adjusts the output voltage to be close to the voltage of the vehicle-mounted main battery pack, and supplies power to the motor by combining with the vehicle-mounted main battery, so that the vehicle type automatic adjusting device can be adapted to vehicle types with different voltage grades under the condition of not communicating with the whole vehicle, and the application is not limited to a certain vehicle type.
4. The electric quantity of the portable battery pack can be preferentially output by adjusting the DC/DC voltage stabilization output, so that the driving mileage of the whole vehicle is improved; the current impact when reducing the treasured that charges and parallelly connected with on-vehicle main battery prevents that the treasured that charges from charging for the big current repayment of on-vehicle main current, lets whole car control system erroneous judgement on-vehicle main battery have the long-time repayment of big current and cut off power return circuit.
5. When the vehicle is locked by the vehicle main battery feed, the portable battery pack and the DC/AC provide 220V/380V alternating current power supply for a charger or other electric equipment carried by the whole vehicle.
Drawings
Fig. 1 is an electrical topology of a portable battery pack of the present application.
Fig. 2 is an electrical control schematic diagram of the vehicle power bank system of the present application.
Detailed Description
The following detailed description of embodiments of the present application refers to the accompanying drawings. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
In fig. 1, 1 is a battery pack, 2 is an activation module, 3 is a heating plate, 4 is a temperature probe interface, 5 is a heating control board, 6 is a charging/discharging and communication socket, 7 is a control board, 8 is a communication port, 9 is an equalization board, and 10 is a fuse.
In fig. 2, 11 is a portable battery pack, 12 is multisource DC/DC and DC/AC, 13 is a relay, 14 is an in-vehicle main battery, 15 is a full vehicle high-voltage box, 16 is a power harness, and 17 is a motor.
The whole technical scheme of the application is as follows: a vehicular power bank system, comprising: the portable battery pack 11, the multi-source DC/DC and DC/AC12 which can automatically adjust the output voltage to be close to the voltage of the vehicle main battery 14, a communication wire harness, a power wire harness 16, a relay 13 which controls the connection and disconnection of the power wire harness 16 and the input end of the vehicle high-voltage box 15, and a control system which provides current, voltage, temperature and insulation abnormal conditions for the battery in the portable battery pack 11. The portable battery packs 11 are sequentially connected with the input ends of multi-source DC/DC and DC/AC12, the output ends of the multi-source DC/DC and DC/AC12 are connected with the input end of a finished automobile high-voltage box 15 through a power wiring harness 16, the relay 13 is arranged between the output ends of the multi-source DC/DC and DC/AC12 and the input end of the finished automobile high-voltage box 15, and the on-off state of the relay 13 is determined by a control system according to the SOC of the portable battery packs 11 and the voltage condition of the finished automobile high-voltage box 15; the DC/AC provides 220V/380V alternating current power supply for a slow charging machine carried by the whole vehicle; the energy of the plurality of portable battery packs 11 is connected with the vehicle main battery 14 in parallel through the multi-source DC/DC and DC/AC12 and is jointly used for the motor 17 of the whole vehicle, and the charging and discharging process is controlled by the BMS of the whole vehicle; when the vehicle-mounted main battery 14 is fed for locking the vehicle, the portable battery pack 11 and the DC/AC provide 220V/380V alternating current power for a slow charging machine carried by the whole vehicle, and provide an emergency charging power; an automatic temperature control system for ensuring that the battery works under a proper temperature condition is arranged in the portable battery pack 11.
In addition, the portable battery pack 11 is a lightweight portable low-voltage battery pack and is composed of a high-specific-energy battery pack 1, a control board 7, an equalizing board 9, a battery box body, an activation module 2, a voltage probe, a temperature probe 4, a heating control board 5, a heating sheet 3, a communication port 8 and a charging and discharging and communication socket 6. The battery pack 1 is provided with a voltage probe and a temperature probe 4, a heating sheet 3 is installed at a proper position in the battery pack 1, the battery pack 1 is connected with a balance plate 9 and a charging, discharging and communication socket 6, the voltage probe, the temperature probe 4 and the heating sheet 3 are connected with a control plate 7, a heating control plate 5 and a communication port 8, and the charging, discharging and communication socket 6 is respectively connected with the heating control plate 5, the temperature probe 4, the control plate 7, the communication port 8 and an activation module 2. The battery pack is internally provided with a battery pack 1 with high specific energy, high specific power, long service life and high safety, and the voltage of the battery pack 1 is between 10 and 100V; the weight of each bag is not more than 25 kg; the voltage levels of the portable battery packs 11 are the same or different; various probes and control boards for monitoring and controlling the voltage, temperature, SOC and SOH parameters of each single battery in real time are installed in the portable battery pack 11, so that the safe operation of the battery is ensured. The equalizing plate 9 supplements the weak batteries with electric quantity and ensures the consistency of the batteries in the long-term operation process of the portable battery pack 11; the activation module 2 will automatically determine that the portable battery pack 11 is connected or disconnected from the multi-source DC/DC and DC/AC after the portable battery pack 11 is connected to the multi-source DC/DC and DC/AC12 input.
As shown in FIG. 1, the portable battery pack 11 of the present application has a weight of not more than 25kg and a voltage of not more than 100V of the battery pack 1. Various probes and control panels are installed in the battery pack, parameters such as voltage, temperature, SOC (system on chip), SOH (state of health) and the like of each single battery are monitored and controlled in real time, and the heating or cooling module is started in due time. The equalizing plate 9 can cut the height and compensate the height in the long-term operation process of the battery pack 1, and the consistency of the batteries is ensured. The activation module 2 automatically determines whether the portable battery pack 11 is connected or disconnected from the multiple sources DC/DC and DC/AC 12.
As shown in fig. 2, the portable battery pack 11 of the present application is sequentially connected to the multi-source DC/DC and DC/AC12 input terminals; the output ends of the multi-source DC/DC and DC/AC12 are connected with the input end of the whole vehicle high-voltage box 15 through the power wiring harness 16, the relay 13 controls the connection and disconnection of the power wiring harness 16 and the input end of the whole vehicle high-voltage box 15, the multi-source DC/DC and DC/AC12 automatically adjust the output voltage to be close to (same as) the voltage of the vehicle main battery 14, the multi-source DC/DC and DC/AC12 automatically adjust the output power, the energy of the portable battery packs 11 is connected with the vehicle main battery 14 in parallel through the multi-source DC/DC and DC/AC12 and then jointly supplies power to the whole vehicle motor 17, and the driving mileage of the whole vehicle is improved; when the vehicle-mounted main battery 14 is fed for locking the vehicle, the portable battery pack 11 and the DC/AC provide 220V/380V alternating current power for a slow charging machine carried by the whole vehicle, and provide emergency charging power.
Example 1
And after the electric vehicle runs until the electric quantity of the vehicle-mounted main battery is 0% SOC, the vehicle is locked through power-off protection. 8 full-charged (100% SOC) 64V20Ah portable battery packs are sequentially connected to a multi-source DC/DC input end, and the multi-source DC/DC output end is connected with the input end of a whole vehicle high-voltage box through a power wiring harness. And restarting the electric vehicle, wherein the electric quantity displayed by the vehicle-mounted main battery is 1% SOC, and after the electric vehicle can continuously run for 82km, the electric vehicle is power-off protected and locked after the electric quantity displayed by the vehicle-mounted main battery is 0% SOC.
Example 2
And after the electric vehicle runs until the electric quantity of the vehicle-mounted main battery is 0% SOC, the vehicle is locked through power-off protection. Sequentially connecting 4 charging quantity 50% SOC and 4 full-charged (100% SOC) 64V20Ah portable battery packs to a multi-source DC/DC input end, connecting a multi-source DC/DC output end with the input end of a whole vehicle high-voltage box through a power wiring harness, restarting the electric vehicle, displaying the electric quantity of the vehicle main battery as 1% SOC, and displaying the electric quantity of the vehicle main battery as 0% SOC after the electric vehicle can continuously run for 60 km.
Example 3
And after the electric vehicle runs until the electric quantity of the vehicle-mounted main battery is 0% SOC, the vehicle is locked through power-off protection. 2 portable battery packs with full charge (100% SOC)48V20Ah, 2 portable battery packs with charge capacity of 50% SOC 64V20Ah, 2 portable battery packs with full charge (100% SOC)60V20Ah and 2 portable battery packs with full charge (100% SOC) 72V20Ah are sequentially connected to a multi-source DC/DC input end, a multi-source DC/DC output end is connected with an input end of a whole vehicle high-voltage box through a power wiring harness, the electric vehicle is restarted, the electric vehicle main battery displays the electric quantity of 1% SOC, and after the electric vehicle can continuously run for 69km, the electric vehicle is powered off to protect the vehicle locked after displaying the electric quantity of the vehicle main battery of 0% SOC.
Example 4
After a vehicle-mounted main battery of the electric vehicle is fully charged (100% SOC), 8 fully charged (100% SOC) 64V20Ah portable battery packs are sequentially connected to a multi-source DC/DC input end, and a multi-source DC/DC output end is connected with an input end of a whole vehicle high-voltage box through a power wiring harness. And starting the electric vehicle, wherein the electric quantity displayed by the vehicle-mounted main battery is 100% SOC, and the electric vehicle can drive 85km more than the electric vehicle driven by only the vehicle-mounted main battery.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.

Claims (10)

1. The utility model provides an automobile-used precious system that charges which characterized in that includes: the portable battery pack, a multi-source DC/DC and DC/AC which can automatically adjust output voltage to be close to the voltage of the vehicle main battery, a communication wire harness, a power wire harness, a relay for controlling the connection and disconnection of the power wire harness and the input end of the high-voltage box of the whole vehicle, and a control system for monitoring and protecting the battery in the portable battery pack when the current, the voltage, the temperature and the insulation are abnormal; the portable battery packs are sequentially connected with multi-source DC/DC and DC/AC input ends, the multi-source DC/DC and DC/AC output ends are connected with the input end of a whole vehicle high-voltage box through power wiring harnesses, a relay is arranged between the multi-source DC/DC and DC/AC output ends and the input end of the whole vehicle high-voltage box, and the on-off of the relay is determined by a control system according to the SOC of the portable battery packs and the voltage condition of the whole vehicle high-voltage box; the energy of the portable battery packs is connected with the vehicle-mounted main battery in parallel through the multi-source DC/DC and the DC/AC to supply power to a motor of the whole vehicle, and the charging and discharging process is still controlled by the BMS of the whole vehicle; when the vehicle-mounted main battery is fed and locked, the portable battery pack and the DC/AC provide 220V/380V alternating current power for a slow charging machine carried by the whole vehicle and provide emergency charging power; an automatic temperature control system which ensures that the battery works under a proper temperature condition is arranged in the portable battery pack.
2. The vehicular power bank system according to claim 1, wherein the portable battery pack is a lightweight portable low-voltage battery pack, and is composed of a high-specific-energy battery pack, a control panel, an equalizing plate, a battery box, an activation module, a voltage probe, a temperature probe, a heating control panel, a heating sheet, a communication port, and a charging/discharging and communication socket component; the battery pack is provided with a voltage probe and a temperature probe, a heating sheet is installed at a proper position in the battery pack, the battery pack is connected with the equalizing plate and the charging and discharging and communication socket, the voltage probe, the temperature probe and the heating sheet are connected with the control plate, the heating control plate and the communication port, and the charging and discharging and communication socket is respectively connected with the heating control plate, the temperature probe, the control plate, the communication port and the activation module; a battery pack with high specific energy, high specific power, long service life and high safety is arranged in the battery pack, and the voltage of the battery pack is between 10 and 100V; the weight of each bag is not more than 25 kg; the voltage grades of the portable battery packs are the same or different; various probes and control boards for monitoring and controlling the voltage, temperature, SOC and SOH parameters of each single battery in real time are arranged in the portable battery pack, so that the safe operation of the battery is ensured; the balancing plate supplements the weak batteries with electric quantity in the long-term operation process of the portable battery pack and ensures the consistency of the batteries; the activation module can automatically judge the connection of the portable battery pack with the multisource DC/DC and DC/AC after the portable battery pack is connected with the multisource DC/DC and DC/AC input ends.
3. The vehicle power bank system according to claim 2, wherein the battery pack voltage is at a voltage level of 12V, 24V, 36V, 48V, 60V or 72V.
4. The vehicular power bank system according to claim 1, wherein the control system collects parameters of current, voltage and temperature of the portable battery pack during charging and discharging in real time through a communication harness, calculates SOC and SOH of the battery pack in real time, outputs an alarm or protection signal at a proper time when the current, voltage, temperature, SOC and SOH of the battery pack are abnormal, requests the charger, the multi-source DC/DC and DC/AC or DC/AC to stop charging and discharging, forcibly turns off the relay at an extreme case, controls input and output of the battery at a proper time, and prevents overcharge or overdischarge of the battery; the control system automatically starts the heating or cooling assembly in the portable battery pack in due time, adjusts the temperature in the battery pack, ensures that the battery works under the proper temperature condition, improves the performance of the battery and prolongs the service life of the battery.
5. The vehicular power bank system according to claim 1, wherein the multi-source DC/DC and DC/AC have multiple inputs, each of which automatically adjusts input power according to battery voltage, SOC and temperature parameters; the multi-source DC/DC and DC/AC output ends are connected with the input end of the whole vehicle high-voltage box, the relay is closed when the multi-source DC/DC and DC/AC automatic regulation output voltage is close to the voltage of the vehicle main battery, and the energy of the portable battery pack is preferentially output and used, and the activation module can automatically judge the connection between the portable battery pack and the multi-source DC/DC and DC/AC when the portable battery pack is connected with the multi-source DC/DC and DC/AC input ends according to the voltage, the temperature and the SOC parameters of the portable battery pack; the multisource DC/DC and DC/AC automatically adjust the maximum output power of the multisource DC/DC and DC/AC according to the access number of the portable battery packs, the battery temperature, the SOC and the SOH state; the relay controls the on-off of the power wire harness and the input end of the high-voltage box; when the battery of the whole vehicle is fed and locked, the portable battery pack and the DC/AC provide 220V/380V alternating current power supply for a slow charging machine carried by the whole vehicle, and after the vehicle is subjected to charging and unlocking, the portable battery pack supplies power to a motor of the whole vehicle to run.
6. A charging method for a vehicle is characterized in that a vehicle charging treasure system is used, the vehicle charging treasure system comprises portable battery packs, multi-source DC/DC and DC/AC, a relay, a communication wiring harness, a power wiring harness and a control system, a plurality of portable battery packs are sequentially connected to a multi-source DC/DC input end, a multi-source DC/DC output is connected with an input end of a whole vehicle high-voltage box through the power wiring harness, the relay is arranged between an output end of the multi-source DC/DC and DC/AC and an input end of the whole vehicle high-voltage box, the relay controls connection and disconnection of the power wiring harness and the input end of the whole vehicle high-voltage box, and the multi-source DC/DC automatically adjusts output voltage to be close to voltage of a vehicle main battery; the multi-source DC/DC adjusts the maximum output power of the DC/DC according to the parallel access number of the portable battery packs, the battery temperature and the battery SOC parameters; the on-off of the relay is determined by a control system according to the SOC of the portable battery pack and the voltage condition of the high-voltage box; the DC/AC can provide 220V/380V alternating current power supply for a slow charging machine carried by the whole vehicle; the energy of the portable battery packs is connected with the vehicle-mounted main battery in parallel through the multi-source DC/DC to supply power to the motor of the whole vehicle, the charging and discharging process is still controlled by the BMS of the whole vehicle, the situation that the charging bank is connected with the vehicle-mounted main battery in parallel and rejected is prevented, and the running mileage of the whole vehicle is improved; when the vehicle-mounted main battery is fed and locked, the portable battery pack and the DC/AC provide 220V/380V alternating current power supply for a slow charging machine carried by the whole vehicle and provide emergency charging power supply; an automatic temperature control system is arranged in the portable battery pack, so that the battery can work under a proper temperature condition, the performance of the battery is improved, and the service life of the battery is prolonged; the control system can monitor and protect the battery in the portable battery pack when the current, voltage, temperature and insulation are abnormal.
7. The vehicle charging method according to claim 6, wherein the portable battery pack is a lightweight portable low-voltage battery pack comprising a high specific energy battery pack, a control board, a balancing board, a battery box, an activation module, a charging and discharging socket and a communication socket part; a battery pack with high specific energy, high specific power, long service life and high safety is arranged in the battery pack, and the voltage of the battery pack is between 10 and 100V; the weight of a single bag does not exceed 25kg, so that the single bag is convenient to install, transport and operate; the voltage grades of the portable battery packs can be the same or different; various probes and control panels are installed in the portable battery pack, and the voltage, the temperature, the SOC and the SOH parameters of each single battery are monitored and controlled in real time, so that the safe operation of the battery is ensured; the balancing plate can supplement the electric quantity to the weak battery in the long-term operation process of the portable battery pack, so that the consistency of the battery is ensured; the activation module can automatically judge the connection between the portable battery pack and the multi-source DC/DC after the portable battery pack is connected with the multi-source DC/DC input end.
8. The method of charging a vehicle of claim 7, wherein the battery voltage is at a voltage level of 12V, 24V, 36V, 48V, 60V or 72V.
9. The vehicle charging method according to claim 8, wherein the control system collects parameters of current, voltage and temperature of the portable battery pack during charging and discharging in real time through the communication harness, and outputs an alarm or protection signal in due time when the current, voltage and temperature of the battery are abnormal, so as to request the charger and the multi-source DC/DC or DC/AC to stop charging and discharging, and forcibly turns off the relay in extreme cases, so as to control the input and output of the battery in due time, thereby preventing the battery from being overcharged or overdischarged; the control system timely and automatically starts the heating or cooling assembly in the portable battery pack, adjusts the temperature in the battery pack, ensures that the battery works under the proper temperature condition, improves the performance of the battery and prolongs the service life of the battery.
10. The vehicle charging method of claim 9, wherein the multi-source DC/DC and DC/AC have multiple inputs, each of which can automatically adjust the input power according to the battery voltage, SOC and temperature parameters; the multi-source DC/DC output end is connected with the input end of the whole vehicle high-voltage box, the relay is closed when the multi-source DC/DC automatically adjusts the output voltage to be close to the voltage of the vehicle main battery, and the energy of the portable battery pack is preferentially output and used, and the activation module can automatically judge the connection between the portable battery pack and the multi-source DC/DC when the portable battery pack is connected with the multi-source DC/DC input end according to the voltage, the temperature and the SOC parameters of the portable battery pack; the multisource DC/DC automatically adjusts the maximum output power of the multisource DC/DC according to the access quantity of the portable battery packs, the battery temperature and the SOC state; the relay controls the on-off of the power wire harness and the input end of the high-voltage box; when the battery of the whole vehicle is fed and locked, the portable battery pack and the DC/AC provide 220V/380V alternating current power supply for a slow charging machine carried by the whole vehicle, and after the vehicle is subjected to charging and unlocking, the portable battery pack supplies power to a motor of the whole vehicle to run.
CN202110052966.XA 2021-01-15 2021-01-15 Vehicle charging device system and charging method Active CN114763068B (en)

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CN118991538A (en) * 2024-10-23 2024-11-22 宁德时代新能源科技股份有限公司 Battery system and charge/discharge control method for battery system

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