CN205488417U - Electric automobile power battery organizes temperature control system - Google Patents
Electric automobile power battery organizes temperature control system Download PDFInfo
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- CN205488417U CN205488417U CN201620158581.6U CN201620158581U CN205488417U CN 205488417 U CN205488417 U CN 205488417U CN 201620158581 U CN201620158581 U CN 201620158581U CN 205488417 U CN205488417 U CN 205488417U
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- power battery
- heat exchanger
- temperature control
- temperature
- reformer
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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
Abstract
The utility model discloses an electric automobile power battery organizes temperature control system, organize, control temperature liquid pump, first heat exchanger, on -vehicle charging system, second heat exchanger, cooler air -conditioner system and control module including power battery, on -vehicle charging system includes methanol -water reformation hydrogen manufacturing subsystem, and it includes reformer and first electromagnetism direction valve, and the residual air that the reformer produced is directly discharged or is discharged behind first heat exchanger behind first electromagnetism direction valve, cross when low in power battery group temperature, the residual air that control module control reformer produced is discharged behind first electromagnetism direction valve, first heat exchanger in proper order, makes the heat transfer of residual air give accuse temperature liquid. The utility model discloses the reformer residual air that can utilize on -vehicle charging system heats power battery group, has practiced thrift electric automobile's energy to in power battery group charging process, perhaps low power during operation, perhaps in the start -up course, the homoenergetic in time heats power battery group.
Description
Technical field
This utility model relates to electric vehicle engineering field, particularly to electric automobile power battery group temperature control system.
Background technology
At present, overwhelming majority automobile, all with gasoline, diesel oil as fuel, not only consumes substantial amounts of petroleum resources, and vehicle exhaust causes serious atmospheric pollution.For tackling this resource problem and environmental problem, the exploitation of electric automobile becomes extremely important, and electric automobile is also increasingly becoming the development trend of automotive field.
Equipped with in the electric automobile of power battery pack, generally should have the cooling system of power battery pack, the moisturizing facility of power battery pack is provided again, this is because temperature is bigger to the performance impact of power battery pack.This major embodiment following four aspect: one, capacity: near room temperature, temperature does not has marked difference to the impact of lithium ion battery and lead-acid battery discharge capacity, but below 0 DEG C, the discharge capacity of lithium ion battery and lead-acid battery all can rapid decrease, particularly lithium ion battery, the most at room temperature testing after it is circulated 5 times at low temperatures, capacity can not return to initial value；Two, internal resistance: the size of the voltage drop that internal resistance causes when determining power battery pack High-current output, when temperature is less than 0 DEG C, the internal resistance of power battery pack will be significantly increased；Three, specific energy, energy density and specific power: the energy that the electrokinetic cell of unit mass or volume can be released under conditions of regulation, the former is specific energy, the latter is energy density, the internal resistance of electrokinetic cell is the biggest, the energy of electric discharge output is the least, internal temperature rise is the highest, and the specific energy of battery just declines；Four, cycle life: when dropping at ambient temperature or raise, the cycle life of power battery pack declines quickly.
In view of this, how the power battery pack to electric automobile carries out the temperature regulation of suitable cooling or heating, so that the power battery pack of electric automobile is operated within the scope of optimal temperature, to the work efficiency of whole electric automobile and for the life-span all it is critical that.Chinese patent 201210007505.1 discloses a kind of temperature control system and method, and including cooling down for power battery pack and the system of heating, wherein, heating system includes: electric water pump, heater, HVAC core body；By controlling cooling system and heating system, can make within the scope of in electric automobile, each power battery pack is operated in suitable temperature.Chinese patent 200510020918.3 discloses a kind of power battery of electric vehicle group temperature-controlling system and method, heat exchanger and the heat exchanger of heat cycles medium including cooled circulated medium, controlled unlatching and the stopping of driving means by electronic control unit, make power battery pack be operated in normal temperature range.
But, above-mentioned patent there is also following defect: under cold external environment condition, power battery pack is when temperature is too low, need to use vehicle-mounted heater or the heating of on-board air conditioner steam, but, vehicle-mounted heater or on-board air conditioner are in the course of the work, it is required to expend more electric energy, so, the energy of electric automobile is not only wasted, and in power battery pack charging process, or during the work of low electricity, or in start-up course, all it is difficult in time power battery pack be heated, is easily caused power battery pack and is damaged because not heating in time.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of electric automobile power battery group temperature control system is provided, this temperature control system can utilize the reformer residual air of on-board charging system to heat power battery pack, save the energy of electric automobile, and in power battery pack charging process, or during the work of low electricity, or in start-up course, all can in time power battery pack be heated.
For solving above-mentioned technical problem, the technical solution of the utility model is: a kind of electric automobile power battery group temperature control system, including power battery pack, temperature control liquid pump, First Heat Exchanger, on-board charging system, the second heat exchanger, air-conditioning refrigeration system and control module；Connect between described power battery pack, temperature control liquid pump, First Heat Exchanger and the second heat exchanger and have temperature control liquid circulating line, in temperature control liquid circulating line, there is temperature control liquid；Described on-board charging system includes methanol-water reformation hydrogen production subsystem and fuel cell subsystem, wherein, described methanol-water reformation hydrogen production subsystem includes reformer and the first electromagnetic direction valve, described reformer prepares hydrogen for the reaction of first alcohol and water generation reformation hydrogen production, and it being supplied to fuel cell, the residual air that reformer produces is expelled directly out after the first electromagnetic direction valve or discharges after First Heat Exchanger；Described fuel cell oxygen generation electrochemical reaction in hydrogen and air produces electric energy, and this electric energy, after power inverter is changed, charges for power battery pack；Described air-conditioning refrigeration system and the second heat exchanger match；Described control module is for controlling the work operating of temperature control liquid pump, on-board charging system and air-conditioning refrigeration system；When power battery pack temperature is too high, control module control reformer produce residual air be expelled directly out after the first electromagnetic direction valve, and control air-conditioning refrigeration system to second heat exchanger input refrigerant, take away the heat in temperature control liquid；When power battery pack temperature is too low, control module controls air-conditioning refrigeration system and closes the passage to the second heat exchanger input refrigerant, and control the residual air discharge after the first electromagnetic direction valve, First Heat Exchanger successively that reformer produces, make the heat of residual air pass to temperature control liquid.
Preferably, described First Heat Exchanger and the second heat exchanger are serially connected, and the temperature control liquid in described temperature control liquid circulating line is under the driving of temperature control liquid pump, and circulation flows through in the second heat exchanger, First Heat Exchanger, power battery pack and temperature control liquid pump.
Preferably, described First Heat Exchanger and the second heat exchanger are parallel with one another, described electric automobile power battery group temperature control system also includes the second electromagnetic direction valve, temperature control liquid in described temperature control liquid circulating line is under the driving of temperature control liquid pump, capable of circulation flow through in the second solenoid directional control valve, the second heat exchanger, power battery pack and temperature control liquid pump, or circulation flows through in the second solenoid directional control valve, First Heat Exchanger, power battery pack and temperature control liquid pump.
Preferably, described methanol-water reformation hydrogen production subsystem also includes that the 3rd heat exchanger, described 3rd heat exchanger are installed on the conveyance conduit of methanol-water raw material, methanol-water raw material is in the 3rd heat exchanger, carrying out heat exchange with the high-temperature hydrogen of reformer output, methanol-water material temperature raises, and hydrogen temperature reduces；Described reformer is provided with reformer chamber, heater and hydrogen purification apparatus, and described heater provides the heat energy of 350-570 DEG C of temperature for reformer chamber；Described reformer chamber is provided with catalyst, and first alcohol and water reacts at reformer chamber generation reformation hydrogen production, prepares the high-temperature gas mixture body based on carbon dioxide and hydrogen；Described reformer chamber is connected by connecting line with hydrogen purification apparatus, connecting line be completely or partially arranged at reformer chamber, the heating high-temperature gas mixture body from reformer chamber output can be continued by the high temperature of reformer chamber；Described connecting line is as the buffering between reformer chamber and hydrogen purification apparatus so that identical or close with the temperature of hydrogen purification apparatus from the temperature of the high-temperature gas mixture body of reformer chamber output；Obtaining hydrogen from the aerogenesis end of hydrogen purification apparatus, this hydrogen exports to fuel cell after the 3rd heat exchanger；After separating hydrogen, residual air is expelled directly out after the first electromagnetic direction valve or discharges after First Heat Exchanger.
Preferably, described heater includes combustion chamber, the hydrogen that this combustion chamber prepares for part and the oxygen combustion in outside air, and the operation for reformer provides heat；The residual air that mixes of unburned gas in steam that in combustion chamber, hydrogen and oxygen burning produces and outside air, is expelled directly out after the first electromagnetic direction valve or discharges after First Heat Exchanger.
Preferably, described temperature control liquid circulating line is provided with some temperature control passages in power battery pack, and these some temperature control passages are uniformly distributed in power battery pack.
Preferably, being provided with temperature sensor in described power battery pack, this temperature sensor is used for monitoring power battery pack temperature, and its signal output part receives control module.
The beneficial effects of the utility model are: under cold external environment condition; this utility model can utilize high heat residual air produced by the methanol-water reformation hydrogen production subsystem of on-board charging system; heat for power battery pack; not only save the energy of electric automobile; and in power battery pack charging process, or during the work of low electricity, or in start-up course; all in time power battery pack can be heated, make power battery pack obtain good protection.
Accompanying drawing explanation
Fig. 1 is the overall structure block diagram of this utility model one optimal way.
Fig. 2 is the overall structure block diagram of another optimal way of this utility model.
Fig. 3 is the preferred structure schematic diagram of this utility model power battery pack.
Detailed description of the invention
Below in conjunction with the accompanying drawings structural principle of the present utility model and operation principle are described in further detail.
As depicted in figs. 1 and 2, this utility model is a kind of electric automobile power battery group temperature control system, including power battery pack 1, temperature control liquid pump 2, First Heat Exchanger 3, on-board charging system the 4, second heat exchanger 5, air-conditioning refrigeration system 6 and control module (not shown)；Described power battery pack 1, temperature control liquid pump 2, between First Heat Exchanger 3 and the second heat exchanger 5 connect have temperature control liquid circulating line 7, in temperature control liquid circulating line 7, there is temperature control liquid；Described on-board charging system 4 includes methanol-water reformation hydrogen production subsystem and fuel cell subsystem, wherein, described methanol-water reformation hydrogen production subsystem includes reformer 41 and the first electromagnetic direction valve 42, described reformer 41 prepares hydrogen for the reaction of first alcohol and water generation reformation hydrogen production, and it being supplied to fuel cell 43, the residual air that reformer 41 produces is expelled directly out after the first electromagnetic direction valve 42 or discharges after First Heat Exchanger 3；The described fuel cell 43 oxygen generation electrochemical reaction in hydrogen and air produces electric energy, and this electric energy, after power inverter 44 is changed, charges for power battery pack 1；Described air-conditioning refrigeration system 6 matches with the second heat exchanger 5；Described control module is for controlling the work operating of temperature control liquid pump 2, on-board charging system 4 and air-conditioning refrigeration system 6；When power battery pack 1 temperature is too high, control module controls the residual air that reformer 41 produces and is expelled directly out after the first electromagnetic direction valve 42, and controls air-conditioning refrigeration system 6 and input refrigerant to the second heat exchanger 5, takes away the heat in temperature control liquid；When power battery pack 1 temperature is too low, control module controls air-conditioning refrigeration system 6 and closes the passage inputting refrigerant to the second heat exchanger 5, and control the residual air discharge after the first electromagnetic direction valve 42, First Heat Exchanger 3 successively that reformer 41 produces, make the heat of residual air pass to temperature control liquid.
As shown in Figure 1, as a kind of optimal way of the present utility model, described First Heat Exchanger 3 is serially connected with the second heat exchanger 5, temperature control liquid in described temperature control liquid circulating line 7 is under the driving of temperature control liquid pump 2, and circulation flows through in the second heat exchanger 5, First Heat Exchanger 3, power battery pack 1 and temperature control liquid pump 2.
As shown in Figure 2, as another kind of optimal way of the present utility model, described First Heat Exchanger 3 is parallel with one another with the second heat exchanger 5, described electric automobile power battery group temperature control system also includes the second electromagnetic direction valve 8, temperature control liquid in described temperature control liquid circulating line 7 is under the driving of temperature control liquid pump 2, capable of circulation flow through in second solenoid directional control valve the 8, second heat exchanger 5, power battery pack 1 and temperature control liquid pump 2, or circulation flows through in the second solenoid directional control valve 8, First Heat Exchanger 3, power battery pack 1 and temperature control liquid pump 2.
As depicted in figs. 1 and 2, described methanol-water reformation hydrogen production subsystem also includes the 3rd heat exchanger 45, described 3rd heat exchanger 45 is installed on the conveyance conduit of methanol-water raw material, methanol-water raw material is in the 3rd heat exchanger 45, heat exchange is carried out with the high-temperature hydrogen of reformer 41 output, methanol-water material temperature raises, and hydrogen temperature reduces；Described reformer 41 is provided with reformer chamber, heater and hydrogen purification apparatus, and described heater provides the heat energy of 350-570 DEG C of temperature for reformer chamber；Described reformer chamber is provided with catalyst, under the effect of catalyst, there is methanol decomposition reaction and the transformationreation of carbon monoxide, generate hydrogen and carbon dioxide, this is component more than, the gas solid catalytic reaction system of many reactions, and reactional equation is: (1) CH3OH→CO+2H2、(2)H2O+CO→CO2+H2
、(3)CH3OH+H2O→CO2+3H2, prepare the high-temperature gas mixture body based on carbon dioxide and hydrogen；Described reformer chamber is connected by connecting line with hydrogen purification apparatus, connecting line be completely or partially arranged at reformer chamber, the heating high-temperature gas mixture body from reformer chamber output can be continued by the high temperature of reformer chamber；Described connecting line is as the buffering between reformer chamber and hydrogen purification apparatus so that identical or close with the temperature of hydrogen purification apparatus from the temperature of the high-temperature gas mixture body of reformer chamber output；Obtaining hydrogen from the aerogenesis end of hydrogen purification apparatus, this hydrogen exports to fuel cell 43 after the 3rd heat exchanger 45；After separating hydrogen, residual air is expelled directly out after the first electromagnetic direction valve 42 or discharges after First Heat Exchanger 3.Described methanol-water reformation hydrogen production subsystem also includes methanol-water container 46 and delivery pump 47, wherein, storing the methanol-water raw material of liquid in methanol-water container 46, delivery pump 47 is pumped to reformer 41 for the methanol-water raw material stored in container 46 by methanol-water by conveyance conduit.
As the optimal way of reformer, described heater includes combustion chamber, the hydrogen that this combustion chamber prepares for part and the oxygen combustion in outside air, and the operation for reformer 41 provides heat；The residual air that mixes of unburned gas in steam that in combustion chamber, hydrogen and oxygen burning produces and outside air, is expelled directly out after the first electromagnetic direction valve 42 or discharges after First Heat Exchanger 3.
As it is shown on figure 3, described temperature control liquid circulating line 7 is provided with some temperature control passages 71 in power battery pack 1, these some temperature control passages 71 are uniformly distributed in power battery pack 1, so uniformly can dispel the heat each cell or be incubated.
In technique scheme, being provided with temperature sensor (not shown) in described power battery pack 1, this temperature sensor is used for monitoring power battery pack 1 temperature, and its signal output part receives control module.
The temperature-controlled process of described electric automobile power battery group temperature control system, comprises the following steps:
(1) control module sets the overtemperature value of power battery pack, supercool numerical value and standard temperature interval value, the higher limit of this standard temperature interval value is less than overtemperature value, the lower limit of this standard temperature interval value is higher than supercool numerical value, and control module is by the temperature of temperature sensor detecting power battery pack；Such as, overtemperature value being set to 40 DEG C, supercool numerical value is set to 0 DEG C, and standard temperature interval value is set to 8-32 DEG C；
(2) control module is according to the temperature of power battery pack, makes following control respectively:
A. when the temperature of power battery pack is higher than overheated numerical value, control module controls the residual air of reformer generation and is expelled directly out after the first electromagnetic direction valve, and control air-conditioning refrigeration system to the second heat exchanger input refrigerant, take away the heat in temperature control liquid, temperature control liquid is under the driving of temperature control liquid pump, by power battery pack, dispel the heat for power battery pack；When the temperature of power battery pack is reduced to the higher limit of standard temperature interval value, control module controls air-conditioning refrigeration system and stops to the second heat exchanger input refrigerant；
B. when the temperature of power battery pack is less than supercool numerical value, control module controls air-conditioning refrigeration system and closes the passage to the second heat exchanger input refrigerant, and control the residual air discharge after the first electromagnetic direction valve, First Heat Exchanger successively that reformer produces, the heat making residual air passes to temperature control liquid, temperature control liquid is under the driving of temperature control liquid pump, by power battery pack, heat for power battery pack；When the temperature of power battery pack rises to the lower limit of standard temperature interval value, control module controls the residual air of reformer generation and is expelled directly out after the first electromagnetic direction valve；
C. when the temperature of power battery pack is within standard temperature interval value, control module controls the residual air of reformer generation and is expelled directly out after the first electromagnetic direction valve, and controlling the air-conditioning refrigeration system closedown passage to the second heat exchanger input refrigerant, power battery pack enters natural heat dissipation/keeping warm mode.
The above, be only this utility model better embodiment, every any trickle amendment, equivalent variations and modification made above embodiment according to the technical solution of the utility model, belongs in the range of technical solutions of the utility model.
Claims (7)
1. electric automobile power battery group temperature control system, it is characterised in that: include power battery pack, temperature control liquid pump, First Heat Exchanger, on-board charging system, the second heat exchanger, air-conditioning refrigeration system and control module；Connect between described power battery pack, temperature control liquid pump, First Heat Exchanger and the second heat exchanger and have temperature control liquid circulating line, in temperature control liquid circulating line, there is temperature control liquid；Described on-board charging system includes methanol-water reformation hydrogen production subsystem and fuel cell subsystem, wherein, described methanol-water reformation hydrogen production subsystem includes reformer and the first electromagnetic direction valve, described reformer prepares hydrogen for the reaction of first alcohol and water generation reformation hydrogen production, and it being supplied to fuel cell, the residual air that reformer produces is expelled directly out after the first electromagnetic direction valve or discharges after First Heat Exchanger；Described fuel cell oxygen generation electrochemical reaction in hydrogen and air produces electric energy, and this electric energy, after power inverter is changed, charges for power battery pack；Described air-conditioning refrigeration system and the second heat exchanger match；Described control module is for controlling the work operating of temperature control liquid pump, on-board charging system and air-conditioning refrigeration system；When power battery pack temperature is too high, control module control reformer produce residual air be expelled directly out after the first electromagnetic direction valve, and control air-conditioning refrigeration system to second heat exchanger input refrigerant, take away the heat in temperature control liquid；When power battery pack temperature is too low, control module controls air-conditioning refrigeration system and closes the passage to the second heat exchanger input refrigerant, and control the residual air discharge after the first electromagnetic direction valve, First Heat Exchanger successively that reformer produces, make the heat of residual air pass to temperature control liquid.
Electric automobile power battery group temperature control system the most according to claim 1, it is characterized in that: described First Heat Exchanger and the second heat exchanger are serially connected, temperature control liquid in described temperature control liquid circulating line is under the driving of temperature control liquid pump, and circulation flows through in the second heat exchanger, First Heat Exchanger, power battery pack and temperature control liquid pump.
Electric automobile power battery group temperature control system the most according to claim 1, it is characterized in that: described First Heat Exchanger and the second heat exchanger are parallel with one another, described electric automobile power battery group temperature control system also includes the second electromagnetic direction valve, temperature control liquid in described temperature control liquid circulating line is under the driving of temperature control liquid pump, capable of circulation flow through in the second solenoid directional control valve, the second heat exchanger, power battery pack and temperature control liquid pump, or circulation flows through in the second solenoid directional control valve, First Heat Exchanger, power battery pack and temperature control liquid pump.
Electric automobile power battery group temperature control system the most according to claim 1, it is characterized in that: described methanol-water reformation hydrogen production subsystem also includes the 3rd heat exchanger, described 3rd heat exchanger is installed on the conveyance conduit of methanol-water raw material, methanol-water raw material is in the 3rd heat exchanger, heat exchange is carried out with the high-temperature hydrogen of reformer output, methanol-water material temperature raises, and hydrogen temperature reduces；Described reformer is provided with reformer chamber, heater and hydrogen purification apparatus, and described heater provides the heat energy of 350-570 DEG C of temperature for reformer chamber；Described reformer chamber is provided with catalyst, and first alcohol and water reacts at reformer chamber generation reformation hydrogen production, prepares the high-temperature gas mixture body based on carbon dioxide and hydrogen；Described reformer chamber is connected by connecting line with hydrogen purification apparatus, connecting line be completely or partially arranged at reformer chamber, the heating high-temperature gas mixture body from reformer chamber output can be continued by the high temperature of reformer chamber；Described connecting line is as the buffering between reformer chamber and hydrogen purification apparatus so that identical or close with the temperature of hydrogen purification apparatus from the temperature of the high-temperature gas mixture body of reformer chamber output；Obtaining hydrogen from the aerogenesis end of hydrogen purification apparatus, this hydrogen exports to fuel cell after the 3rd heat exchanger；After separating hydrogen, residual air is expelled directly out after the first electromagnetic direction valve or discharges after First Heat Exchanger.
Electric automobile power battery group temperature control system the most according to claim 4, it is characterised in that: described heater includes combustion chamber, the hydrogen that this combustion chamber prepares for part and the oxygen combustion in outside air, and the operation for reformer provides heat；The residual air that mixes of unburned gas in steam that in combustion chamber, hydrogen and oxygen burning produces and outside air, is expelled directly out after the first electromagnetic direction valve or discharges after First Heat Exchanger.
Electric automobile power battery group temperature control system the most according to claim 1, it is characterised in that: described temperature control liquid circulating line is provided with some temperature control passages in power battery pack, and these some temperature control passages are uniformly distributed in power battery pack.
Electric automobile power battery group temperature control system the most according to claim 1, it is characterised in that: being provided with temperature sensor in described power battery pack, this temperature sensor is used for monitoring power battery pack temperature, and its signal output part receives control module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620158581.6U CN205488417U (en) | 2016-03-02 | 2016-03-02 | Electric automobile power battery organizes temperature control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620158581.6U CN205488417U (en) | 2016-03-02 | 2016-03-02 | Electric automobile power battery organizes temperature control system |
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| CN205488417U true CN205488417U (en) | 2016-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655668A (en) * | 2016-03-02 | 2016-06-08 | 广东合即得能源科技有限公司 | Electric vehicle power battery pack temperature control system and method |
| CN106711548A (en) * | 2017-02-22 | 2017-05-24 | 山东科技大学 | Power battery air heat management system for pure electric vehicle and operating method of system |
-
2016
- 2016-03-02 CN CN201620158581.6U patent/CN205488417U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655668A (en) * | 2016-03-02 | 2016-06-08 | 广东合即得能源科技有限公司 | Electric vehicle power battery pack temperature control system and method |
| WO2017148043A1 (en) * | 2016-03-02 | 2017-09-08 | 广东合即得能源科技有限公司 | Temperature control system and method for power battery pack of electric vehicle |
| CN106711548A (en) * | 2017-02-22 | 2017-05-24 | 山东科技大学 | Power battery air heat management system for pure electric vehicle and operating method of system |
| CN106711548B (en) * | 2017-02-22 | 2023-07-07 | 山东科技大学 | Air thermal management system for power battery of pure electric vehicle and working method of air thermal management system |
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| GR01 | Patent grant | ||
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Granted publication date: 20160817 Effective date of abandoning: 20171128 |