CN204928340U - Realization device that group battery low pressure is charged - Google Patents
Realization device that group battery low pressure is charged Download PDFInfo
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- CN204928340U CN204928340U CN201520459141.XU CN201520459141U CN204928340U CN 204928340 U CN204928340 U CN 204928340U CN 201520459141 U CN201520459141 U CN 201520459141U CN 204928340 U CN204928340 U CN 204928340U
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- 238000007600 charging Methods 0.000 claims abstract description 136
- 238000012544 monitoring process Methods 0.000 claims abstract description 40
- 239000004065 semiconductor Substances 0.000 claims description 27
- 230000005611 electricity Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model relates to a realization device that group battery low pressure is charged, including charge power module, interface circuit module, then electric module, switch module, battery pack module, the monitoring module charges, battery pack module comprises a plurality of A series of cells, and one of them part battery note is first battery set, and remainder battery note is the second group battery, power module charges for it charges for battery pack module to loop through interface circuit module, the electric module that continues and switch module, its completion signal that charges that still is used for acquireing battery pack module to control then electric module is in an operating condition or the 2nd operating condition. The utility model discloses can let independent group battery trickle charge, can pass through big electricity charging simultaneously, indirect quick implementation system equilibrium to can let the group battery temperature be in controllable scope.
Description
Technical field
The utility model relates to the implement device of a kind of battery pack low pressure charging.
Background technology
Along with the consumption day by day of non-renewable resources, haze weather is more and more frequent, and the development of people to green novel energy source is more and more paid attention to.Particularly in recent years, electric motor car auxiliary facility perfect further, use the electric bicycle, Sightseeing Trolley, electric automobile, electric bus etc. of new forms of energy battery pack more and more general, demand is also increasing.But, because of problems such as the battery cyclic life-span are undesirable, the charging interval is long, strongly limit the popularization of electric motor car product.
At present, the charging modes that market electric motor car product is common is: controlled by assembled battery total voltage, then carry out CC/CV (constant current/constant voltage) charging.Be connected in series impedance between the wire rod that this mode is passed through because of different, the electric current of battery pack shunting and battery pack comparatively large, easily occur during large current charge that heat is unbalance, so the charging of battery pack large voltage high-current is dangerous; In addition, this mode is when charging, and the electric current of every Battery pack is all relatively consistent, so when situation appears in the consistency of battery pack, the battery cyclic life-span is shorter and shorter, and battery pack flying power is had a greatly reduced quality.The method being extended cycle life by charge balancing mode common on the market, its essence is discharged by plug-in resistance, allows voltage fall same level.But its process is very very long, often just intersperse for jumbo battery pack.What have even accelerate balancing speed by increasing the mode of euqalizing current, occurs again hot unbalance, ultimately increase the probability of the security incidents such as charging process is on fire, blast while result wastes energy.
Can see from common charging solution, the control starting point of its charging is battery pack series connection total voltage.First, when battery pack Individual cells module voltage is on the low side need trickle charge time, because series quantity is more, by the basic None-identified of assembled battery total voltage, so when the mode of CC (constant current) is charged, low-voltage battery module will be faster than the decay of other battery modules, and this situation will continue to occur in upper once circulation, so the battery cyclic life-span will constantly shorten, battery pack will finally show and will not more and more be durable.Secondly, during high-voltage large current charging, line loss and heating will be very serious, particularly when situation appears in consistency of battery pack, high-voltage large current charging will shorten the useful life of battery pack, and in fact, the market overwhelming majority is all the charge mode of high voltage small area analysis, be also consider based on safety and guaranteed performance.Finally, some ensures conforming way by charge balancing mode, its in fact, for jumbo battery pack, short time regulating action is micro-very micro-.If increasing euqalizing current, whole system temperature will rise again, another side, if use large current charge, whole system temperature may be out of control, finally may cause security incident.
In sum, there is following defect in existing charging modes:
A, certain low-voltage module of battery pack can not be judged, then take trickle charge separately;
B, be not suitable for carrying out large current charge, particularly when the consistency of battery pack is deteriorated;
The mode of C, band charge balancing is charged, and time for balance is very long, DeGrain, even may occur temperature drift or out-of-control condition.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide one can allow independent battery pack trickle charge, can large current charge be passed through simultaneously, indirectly realize system equalization fast, and battery pack temperature can be allowed to be in the implement device of the battery pack low pressure charging of controlled range.
For achieving the above object, the utility model adopts following technical scheme:
An implement device for battery pack low pressure charging, comprises charging module, interface module, relay module, switch module, battery module, charging monitoring module; Described battery module is made up of multiple serial battery, and wherein a part of battery is designated as the first battery pack, and remainder battery is designated as the second battery pack;
Charging module, for successively by interface module, relay module and switch module be battery module charging; It is also for obtaining the charging completion signal of battery module, is in the first operating state or the second operating state to control relay module; Described first operating state is that switch module is connected with the first battery pack by relay module, and the second battery pack and switch module is disconnected; Described second operating state is that switch module is connected with the second battery pack by relay module, and the first battery pack and switch module is disconnected; Described charging completion signal is that all batteries in the first battery pack or the second battery pack are in charging complete state;
Charging monitoring module, for detecting the cell voltage in the first battery pack or the second battery pack, when battery is in charging complete state, is disconnected the battery and relay module that are in charging complete state by switch module.
Preferably, described switch module comprises the switch element equal with number of batteries, each switch element includes a metal-oxide-semiconductor and a diode, described metal-oxide-semiconductor and diode are in parallel, the negative pole of each diode is all connected with the positive pole of corresponding battery, and the positive pole of each diode is all corresponding with relay module to be connected;
The grid G of each metal-oxide-semiconductor is all connected with charging monitoring module, and the source S of each metal-oxide-semiconductor is all connected with the positive pole of corresponding diode, and the drain D of each metal-oxide-semiconductor is all connected with the negative pole of diode accordingly.
Preferably, described charging module comprises power supply unit, first voltage comparator equal with number of batteries, the first logic control element and the first charging voltage monitoring means;
Described power supply unit is the battery charging in battery module by interface module; Wherein the in-phase input end of each first voltage comparator is all connected with the positive pole of corresponding battery, the reverse input end of each second voltage comparator is all by a reference voltage ground connection, and the output of each first voltage comparator is all connected with the first charging voltage monitoring means;
Described first charging voltage monitoring means is corresponding with the first logic control element to be connected; Described first logic control element obtains the charging completion signal of the first battery pack by interface module, be in the second operating state to control relay module.
Preferably, described first logic control element is also connected with relay module by one first delay unit.
Preferably, described charging monitoring module comprises second voltage comparator equal with number of batteries, the second charging voltage monitoring means and the second logic control element;
Wherein the in-phase input end of each second voltage comparator is all connected with the positive pole of corresponding battery, the reverse input end of each second voltage comparator is all by a reference voltage ground connection, and the output of each second voltage comparator is all connected with the second charging voltage monitoring means;
Described second charging voltage monitoring means is corresponding with the second logic control element to be connected; Described second logic control element is connected with the grid G of each metal-oxide-semiconductor, after the battery monitored in battery module when the second logic control element is full of, then controls the metal-oxide-semiconductor that connect corresponding to this battery and disconnects;
When the second logic control element monitor relay module be in the second operating state time, then control each metal-oxide-semiconductor conducting, to make the second battery pack be in charged state, and make the first battery pack be in off-state.
Preferably, the output of each second voltage comparator is all connected with the second charging voltage monitoring means by one second delay unit.
Preferably, described relay module is a relay group.
The beneficial effects of the utility model are as follows:
The implement device implementation of this battery pack low pressure charging is simple, reliable operation.The low pressure charging not only effectively can carrying out every batteries independent controls, and can allow independent battery pack trickle charge, effectively can ensure the collocation consistency of battery pack like this.Also can realize large current charge simultaneously, thus indirectly realize system equalization fast, and battery pack temperature can be allowed to be in controlled range.Moreover it effectively can also extend the cycle life of battery pack, guarantees the fail safe of batteries charging.
Accompanying drawing explanation
Fig. 1 is the module map of the better embodiment of the implement device of the utility model battery pack low pressure charging.
Fig. 2 is the circuit diagram of the first batteries charging of the implement device of the utility model battery pack low pressure charging.
Fig. 3 is the circuit diagram of the second batteries charging of the implement device of the utility model battery pack low pressure charging.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
Refer to Fig. 1 to Fig. 3, the utility model relates to the implement device of a kind of battery pack low pressure charging, and its better embodiment comprises charging module, interface module, relay module, switch module, battery module, charging monitoring module; Battery module is made up of multiple serial battery, and wherein a part of battery is designated as the first battery pack, and remainder battery is designated as the second battery pack.Wherein relay module is a relay group.
Charging module, for successively by interface module, relay module and switch module be battery module charging; It is also for obtaining the charging completion signal of battery module, is in the first operating state or the second operating state to control relay module; First operating state is that switch module is connected with the first battery pack by relay module, and the second battery pack and switch module is disconnected; Second operating state is that switch module is connected with the second battery pack by relay module, and the first battery pack and switch module is disconnected; Charging completion signal is that all batteries in the first battery pack or the second battery pack are in charging complete state.
Charging monitoring module, for detecting the cell voltage in the first battery pack or the second battery pack, when battery is in charging complete state, is disconnected the battery and relay module that are in charging complete state by switch module.
Concrete, when charging module access interface circuit module is battery module charging, it is separately each battery (Battery1, Battery2 in battery module ... BatteryN) trickle of low-voltage, CC (constant current) or CV (constant voltage) charging is carried out.Battery module is also by being connected with charging monitoring module in addition, forms 2 charging balanced protection circuit.
In the present embodiment, the first battery pack is odd number battery pack (Battery1, Battery3 ...), the second battery pack is even number battery pack (Battery2, Battery4 ...).Wherein region (1-2) comprises Battery1, Battery2; (3-4) comprises Battery3, Battery4 in region; (5-6) comprises Battery5, Battery6 in region ... (N-1-N) comprises BatteryN-1, BatteryN in region.
Further, switch module can comprise the switch element equal with number of batteries, each switch element includes a metal-oxide-semiconductor and a diode, metal-oxide-semiconductor and diode are in parallel, the negative pole of each diode is all connected with the positive pole of corresponding battery, and the positive pole of each diode is all corresponding with relay module to be connected.
The grid G of each metal-oxide-semiconductor is all connected with charging monitoring module, and the source S of each metal-oxide-semiconductor is all connected with the positive pole of corresponding diode, and the drain D of each metal-oxide-semiconductor is all connected with the negative pole of diode accordingly.
Preferred further, described charging module comprises power supply unit, first voltage comparator equal with number of batteries, the first logic control element and the first charging voltage monitoring means.
Power supply unit is the battery charging in battery module by interface module; Wherein the in-phase input end of each first voltage comparator is all connected with the positive pole of corresponding battery, the reverse input end of each second voltage comparator is all by a reference voltage ground connection, and the output of each first voltage comparator is all connected with the first charging voltage monitoring means.
First charging voltage monitoring means is corresponding with the first logic control element to be connected; Described first logic control element obtains the charging completion signal of the first battery pack by interface module, be in the second operating state to control relay module.
Concrete, the charhing unit in charging module, by organizing the independent circuits on independently transformer and non-co-ground more, is finally processed into and automatically identifies, the charging module of band trickle, CC (constant current), CV (constant voltage) pattern.Charhing unit is respectively region (1-2), region (3-4) ... region (N-1-N) provides independently region charging voltage V (1-2), V (3-4) ... V (N-1-N).
Preferred further, the first logic control element is also connected with relay module by one first delay unit.
Moreover charging monitoring module comprises second voltage comparator equal with number of batteries, the second charging voltage monitoring means and the second logic control element.
Wherein the in-phase input end of each second voltage comparator is all connected with the positive pole of corresponding battery, the reverse input end of each second voltage comparator is all by a reference voltage ground connection, and the output of each second voltage comparator is all connected with the second charging voltage monitoring means.
Second charging voltage monitoring means is corresponding with the second logic control element to be connected; Described second logic control element is connected with the grid G of each metal-oxide-semiconductor, after the battery monitored in battery module when the second logic control element is full of, then controls the metal-oxide-semiconductor that connect corresponding to this battery and disconnects.
When the second logic control element monitor relay module be in the second operating state time, then control each metal-oxide-semiconductor conducting, to make the second battery pack be in charged state, and make the first battery pack be in off-state.
Wherein, charging monitoring module can provide reference voltage Vref for region charging and guarantee the uniqueness in low pressure charging process region, such as: the odd number battery pack in battery pack enters charged state, the even number battery pack now in system does not locate charged state, and namely even number battery pack is in off-state.Only have the cell voltage in odd number battery pack all to meet reference voltage Vref and just can forward even number batteries charging to, finally realize the cell voltage consistency in even number and odd number region.In addition, the mode because of charging uses battery module region independently-powered, as V (1-2), V (3-4), V (5-6) ... therefore there is not the heating that the impedance of battery serial connection causes in charging process.Meanwhile, because battery charging consistency is that mode by making up energy and time delay charging realizes, there is not the serious fever phenomenon that brings of charging resistor equilibrium, so the mode of large current charge can be used yet.
Further, the output of each second voltage comparator is all connected with the second charging voltage monitoring means by one second delay unit.
In the present embodiment, the concrete operation principle of the implement device of this battery pack low pressure charging is as follows:
As shown in Figure 2, initial condition is, the grid G 1 of the metal-oxide-semiconductor in switch module, grid G 2 ... grid G N is all closed, and relay module is now defaulted as odd number batteries charging.I.e. odd number battery pack (Battery1, Battery3, Battery5 ...) be in charged state, even number battery pack (Battery2, Battery4, Battery6 ...) be in the off-state of not charging.
As odd number battery pack (Battery1, Battery3, Battery5 ...) in any battery when reaching charging set point (such as: cobalt acid lithium battery 4.2V completely fills), charging monitoring module and charging module all can receive the signal of corresponding battery charging complete.When the charging completion signal (even number battery in like manner) of certain battery in odd number battery pack is obtained by the first voltage comparator or the sampling of the second voltage comparator, the voltage that the first voltage comparator (the second voltage comparator in like manner) overturns can enter the first logic control element by the first charging voltage monitoring means and carry out s operation control.
That is, first, after charging monitoring module receives the charging completion signal of certain battery, then the closedown of the metal-oxide-semiconductor that a low level connects with the negative pole controlling corresponding battery is exported by the second logic control element.Meanwhile, after charging module receives the charging completion signal of certain battery, then receive corresponding battery charging completion signal by the first logic control element and add up.Until after the first logic control element have received the charging completion signal of all batteries in odd number battery pack, then export and carry out switching over control signal with control relay module, namely make relay module be in the second operating state.The relay being in the second operating state feeds back a signal immediately to the second logic control circuit of charging monitoring modular, then the second logic control circuit all exports high level, all connects (namely restPosing) to make all metal-oxide-semiconductors.
Now as Fig. 3 even number battery pack (Battery2, Battery4, Battery6 ...) enter charged state, its charging process and odd number battery pack (Battery1, Battery3, Battery5 ...) charging process in like manner.Generally speaking, when consistency of battery pack becomes undesirable, the battery of low voltage will enter trickle charge pattern, and other normal batteries will enter CC constant current charging mode.After the battery of CC constant current charge is charged to set point in advance, because of the MOS opening and closing of negative pole end, and the first logic control circuit in charging module does not meet the control signal exporting conversion relay module operating state, so, the battery always waiting for low-voltage is connected between the battery completely filled in advance, until low-voltage battery is charged to setting voltage value (being easy to determine this value by the first voltage comparator or the second voltage comparator), this mode compensate for the lack of uniformity of batteries charging.Because unbalanced battery is made up by the mode of charging, variations in temperature is very little, there is not the temperature control problem of power consumption balanced way.
Delay circuit in the present embodiment all belongs to judgement time delay, avoids some very sensitive signal interference in application.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection range of the utility model claim.
Claims (7)
1. an implement device for battery pack low pressure charging, is characterized in that:
Comprise charging module, interface module, relay module, switch module, battery module, charging monitoring module; Described battery module is made up of multiple serial battery, and wherein a part of battery is designated as the first battery pack, and remainder battery is designated as the second battery pack;
Charging module, for successively by interface module, relay module and switch module be battery module charging; It is also for obtaining the charging completion signal of battery module, is in the first operating state or the second operating state to control relay module; Described first operating state is that switch module is connected with the first battery pack by relay module, and the second battery pack and switch module is disconnected; Described second operating state is that switch module is connected with the second battery pack by relay module, and the first battery pack and switch module is disconnected; Described charging completion signal is that all batteries in the first battery pack or the second battery pack are in charging complete state;
Charging monitoring module, for detecting the cell voltage in the first battery pack or the second battery pack, when battery is in charging complete state, is disconnected the battery and relay module that are in charging complete state by switch module.
2. the implement device of battery pack low pressure charging as claimed in claim 1, is characterized in that:
Described switch module comprises the switch element equal with number of batteries, each switch element includes a metal-oxide-semiconductor and a diode, described metal-oxide-semiconductor and diode are in parallel, the negative pole of each diode is all connected with the positive pole of corresponding battery, and the positive pole of each diode is all corresponding with relay module to be connected;
The grid G of each metal-oxide-semiconductor is all connected with charging monitoring module, and the source S of each metal-oxide-semiconductor is all connected with the positive pole of corresponding diode, and the drain D of each metal-oxide-semiconductor is all connected with the negative pole of diode accordingly.
3. the implement device of battery pack low pressure charging as claimed in claim 2, is characterized in that:
Described charging module comprises power supply unit, first voltage comparator equal with number of batteries, the first logic control element and the first charging voltage monitoring means;
Described power supply unit is the battery charging in battery module by interface module; Wherein the in-phase input end of each first voltage comparator is all connected with the positive pole of corresponding battery, the reverse input end of each second voltage comparator is all by a reference voltage ground connection, and the output of each first voltage comparator is all connected with the first charging voltage monitoring means;
Described first charging voltage monitoring means is corresponding with the first logic control element to be connected; Described first logic control element obtains the charging completion signal of the first battery pack by interface module, be in the second operating state to control relay module.
4. the implement device of battery pack low pressure charging as claimed in claim 3, is characterized in that: described first logic control element is also connected with relay module by one first delay unit.
5. the implement device of battery pack low pressure charging as claimed in claim 3, is characterized in that:
Described charging monitoring module comprises second voltage comparator equal with number of batteries, the second charging voltage monitoring means and the second logic control element;
Wherein the in-phase input end of each second voltage comparator is all connected with the positive pole of corresponding battery, the reverse input end of each second voltage comparator is all by a reference voltage ground connection, and the output of each second voltage comparator is all connected with the second charging voltage monitoring means;
Described second charging voltage monitoring means is corresponding with the second logic control element to be connected; Described second logic control element is connected with the grid G of each metal-oxide-semiconductor, after the battery monitored in battery module when the second logic control element is full of, then controls the metal-oxide-semiconductor that connect corresponding to this battery and disconnects;
When the second logic control element monitor relay module be in the second operating state time, then control each metal-oxide-semiconductor conducting, to make the second battery pack be in charged state, and make the first battery pack be in off-state.
6. the implement device of battery pack low pressure charging as claimed in claim 5, is characterized in that: the output of each second voltage comparator is all connected with the second charging voltage monitoring means by one second delay unit.
7. the implement device of the battery pack low pressure charging according to any one of claim 1 to 6, is characterized in that: described relay module is a relay group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520459141.XU CN204928340U (en) | 2015-06-30 | 2015-06-30 | Realization device that group battery low pressure is charged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520459141.XU CN204928340U (en) | 2015-06-30 | 2015-06-30 | Realization device that group battery low pressure is charged |
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| Publication Number | Publication Date |
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| CN204928340U true CN204928340U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520459141.XU Withdrawn - After Issue CN204928340U (en) | 2015-06-30 | 2015-06-30 | Realization device that group battery low pressure is charged |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901409A (en) * | 2015-06-30 | 2015-09-09 | 深圳市卓能新能源科技有限公司 | Device for achieving battery pack low-voltage charging |
| CN110266066A (en) * | 2019-05-05 | 2019-09-20 | 江苏苏美达机电有限公司 | The battery charge controller and charge control method of more lithium battery group parallel connections |
-
2015
- 2015-06-30 CN CN201520459141.XU patent/CN204928340U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901409A (en) * | 2015-06-30 | 2015-09-09 | 深圳市卓能新能源科技有限公司 | Device for achieving battery pack low-voltage charging |
| CN104901409B (en) * | 2015-06-30 | 2017-03-29 | 深圳市卓能新能源股份有限公司 | What a kind of battery pack low pressure charged realizes device |
| CN110266066A (en) * | 2019-05-05 | 2019-09-20 | 江苏苏美达机电有限公司 | The battery charge controller and charge control method of more lithium battery group parallel connections |
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| CP03 | Change of name, title or address |
Address after: Longgang District of Shenzhen City, Guangdong province 518117 Ping Street in the community sifangpu village 1 building A 101, 201, 301, building B, building D, building G Patentee after: SHENZHEN ZHUONENG NEW ENERGY CO., LTD. Address before: 518000 Shenzhen City, Longgang District, Ping and industrial zone, a phase of the first phase of the United States and the United States, Guangdong, a period of three Patentee before: Shenzhen Zhuoneng New Energy Technology Co.,Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20151230 Effective date of abandoning: 20170329 |
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| AV01 | Patent right actively abandoned |