CN209487668U - The battery cooling system of electric car - Google Patents
The battery cooling system of electric car Download PDFInfo
- Publication number
- CN209487668U CN209487668U CN201920227869.8U CN201920227869U CN209487668U CN 209487668 U CN209487668 U CN 209487668U CN 201920227869 U CN201920227869 U CN 201920227869U CN 209487668 U CN209487668 U CN 209487668U
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- Prior art keywords
- cooling
- temperature
- battery pack
- heat exchanger
- circuit
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- 238000001816 cooling Methods 0.000 title claims abstract description 74
- 239000002826 coolant Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000004781 supercooling Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 20
- 239000003507 refrigerant Substances 0.000 abstract description 12
- 230000009471 action Effects 0.000 abstract description 3
- 230000036757 core body temperature Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Secondary Cells (AREA)
Abstract
The purpose of the utility model is to provide a kind of battery cooling systems that can adapt to varying environment and stable, good cooling results electric cars, including coolant cooling circuit in parallel and High-temperature cooling circuit, High-temperature cooling circuit includes heat exchanger, wherein a-road-through supercooling pipeline and battery pack, water pump connect and compose closed cycle circuit to heat exchanger, and another way is coupled with air conditioner cooling cycle system by cooling line and constitutes closed cycle circuit.When the temperature in environment temperature and battery pack is lower than setting value, coolant cooling circuit cools down battery pack；When the temperature in environment temperature and battery pack is higher than setting value, coolant liquid is passed through inside the heat exchanger in High-temperature cooling circuit all the way, is passed through refrigerant, coolant liquid side all the way, coolant liquid flows into battery pack under that action of the water pump, it absorbs heat in battery pack, makes the reduction of battery pack core body temperature；Refrigerant side, the refrigerant for flowing through heat exchanger occur heat exchange with high temperature coolant in heat exchange, reduce the temperature of coolant liquid.
Description
Technical field
The utility model relates to electric vehicle engineering fields, and in particular to a kind of battery cooling system of electric car.
Background technique
Electric car utilizes the battery as power source, with the advantage that traditional vehicle is incomparable in terms of energy conservation and environmental protection.Electricity
All there is a suitable operating temperature range, typically about 15~45 DEG C when the battery work of electrical automobile, exceeds the temperature model
The service performance and service life that can seriously affect battery are enclosed, or even will appear security risk, it is therefore desirable to which set of system is to electricity
Pond is cooled down.Battery is cooling to common are air-cooled and liquid cooling, it is air-cooled and be divided into it is natural air cooled with natural wind forced convertion, be with
Air is exactly that the heat of battery is taken away to, but cell wall cooling to achieve the purpose that by the wind of movement generation as a heat transfer medium
The coefficient of heat transfer is low between face, and air-cooled cooling velocity is slow, is only applicable to the lesser situation of battery radiating requirements；Liquid cooling is to use coolant liquid
The heat that heat exchange generates battery pack is carried out with outside air as a heat transfer medium to send out, the specific heat capacity of coolant liquid is larger, phase
It is higher to exchange the thermal efficiency, but heat transfer process is complicated, system response is small compared with slow and temperature controlling range, especially in battery superheat state
Under, it can not be quickly cooled down battery, cause vehicle to the bad adaptability of environment, can not work normally or even pacify under limiting temperature
Full accident.
Utility model content
The purpose of the utility model is to provide a kind of varying environments and stable, good cooling results electronic of can adapt to
The battery cooling system of automobile.
To achieve the goals above, a kind of the technical solution adopted in the utility model are as follows: battery cooling system of electric car
System, including coolant cooling circuit in parallel and High-temperature cooling circuit, High-temperature cooling circuit includes heat exchanger, and heat exchanger is wherein all the way
Closed cycle circuit is connected and composed by cooling line and battery pack, water pump, another way is followed by cooling line and air conditioner refrigerating
Loop system coupling constitutes closed cycle circuit.
In above scheme, when the temperature in environment temperature and battery pack is lower than setting value, coolant cooling circuit is to battery
Packet is cooled down；When the temperature in environment temperature and battery pack is higher than setting value, one inside the heat exchanger in High-temperature cooling circuit
Road is passed through coolant liquid, is passed through refrigerant all the way, and coolant liquid side, coolant liquid flows into battery pack under that action of the water pump, in battery pack
Heat absorption makes the reduction of battery pack core body temperature；Refrigerant side, the refrigerant for flowing through heat exchanger occur in heat exchange with high temperature coolant
Heat exchange reduces the temperature of coolant liquid.
Detailed description of the invention
Fig. 1 is the general illustration of the utility model；
Fig. 2 is coolant cooling circuit；
Fig. 3 is High-temperature cooling circuit.
Specific embodiment
As shown in Figure 1-Figure 3, a kind of battery cooling system of electric car, including coolant cooling circuit A and height in parallel
Warm cooling circuit B, High-temperature cooling circuit B include heat exchanger 10, heat exchanger 10 wherein a-road-through supercooling pipeline and battery pack 20,
Water pump 30 connects and composes closed cycle circuit, and another way is coupled composition enclosed with air conditioner cooling cycle system by cooling line and followed
Loop back path.Coolant cooling circuit A and High-temperature cooling circuit B is two independent battery cooling circuits, is guaranteed each in battery pack 20
A single cell operation within a reasonable temperature range while, temperature between each battery and battery module as far as possible in maintenance package
Uniformity.
Coolant cooling circuit A includes radiator 40, and the both ends of radiator 40 are changed with battery pack 20 respectively by cooling line
Hot plate coolant inlet, outlet are connected, and water pump 30 is arranged on the cooling line between radiator 40 and battery pack 20, radiator
40 sides are additionally provided with fan 80.The addition of radiator 40 mainly considers the economical and energy saving under low temperature environment, reduces heat exchanger
The energy consumption of 10 work, increases the course continuation mileage of vehicle.
The first solenoid valve 51, battery pack 20 and heat exchange are additionally provided on cooling line between battery pack 20 and radiator 40
Second solenoid valve 52 is provided on cooling line between device 10, the first and second solenoid valve 51,52 controls coolant cooling circuit respectively
A, the connection and disconnection of High-temperature cooling circuit B.
Electric expansion valve 100 is provided on heat exchanger 10, electric expansion valve 100 controls heat exchanger 10 and air conditioner refrigerating recycles
The connection and disconnection of system.Electric expansion valve 100 is the state disconnected with heat exchanger 10 when low temperature, when high temperature, is led to
The temperature for the coolant liquid crossed inside heat exchanger gradually rises, and connects after 100 expanded by heating of electric expansion valve with heat exchanger 10, from sky
The refrigerant of adjusting system could also exchange heat by heat exchanger 10, and then with the High-temperature cooling flowed through inside heat exchanger 10.
The air conditioner cooling cycle system includes compressor 60, condenser 70, between heat exchanger 10 and compressor 60 with
And pressure-temperature sensor 90 is provided between compressor 60 and condenser 70.The air conditioner refrigerating circulation that vehicle itself is carried
System is applied in battery cooling system, at low cost, good cooling results.
Close on battery pack 20, water pump 30 cooling line on be additionally provided with temperature sensor 110.Temperature sensor 110 is adopted
Collect the temperature of coolant liquid, and then control the opening and closing of the first and second solenoid valve 51,52, realizes that coolant cooling circuit and High-temperature cooling return
The switching on road.
In the following, the work process to the utility model is described in detail:
Coolant cooling circuit: when temperature is lower than setting value in environment temperature and battery, the first solenoid valve 51 is opened, the second electricity
Magnet valve 52 is closed, and coolant liquid flows into battery pack 20 under the effect of water pump 30, absorbs heat in battery pack 20, drops battery core body temperature
Low, radiator 40 and cold air carry out heat exchange under the action of fan 80, and the coolant temperature of outflow radiator 40 reduces, shape
At a closed cycle circuit.
High-temperature cooling circuit: when temperature is higher than setting value in environment temperature and battery, the first solenoid valve 51 is closed, the second electricity
Magnet valve 52 is opened, and heat exchanger 10 is coupled together with air conditioner refrigerating circulation, is passed through refrigerant in 10 interior side of heat exchanger, side is logical
Enter coolant liquid, coolant liquid side, coolant liquid flows into battery pack 20 under the effect of water pump 30, absorbs heat in battery pack 20, make battery
Temperature reduction flows out the high temperature coolant inflow heat exchanger 10 of battery pack 20；Refrigerant side flows through the refrigerant of heat exchanger 10
Heat exchange occurs with high temperature coolant in heat exchanger 10, the refrigerant after heating flows into condenser under the effect of compressor 60
70, heat exchange is carried out with cold air in condenser 70, heat exchanger 10 is finally flowed back to, forms a closed cycle circuit, and it is high
Warm coolant liquid occurs the cryogenic liquid flowed out after heat exchange with refrigerant in heat exchanger 10 and flows down again through the effect of water pump 30
A closed cycle circuit is formed into battery pack 20.
Claims (6)
1. a kind of battery cooling system of electric car, it is characterised in that: cold including coolant cooling circuit (A) and high temperature in parallel
But circuit (B), High-temperature cooling circuit (B) include heat exchanger (10), heat exchanger (10) wherein a-road-through supercooling pipeline and battery
Packet (20), water pump (30) connect and compose closed cycle circuit, and another way is coupled by cooling line with air conditioner cooling cycle system
Constitute closed cycle circuit.
2. the cooling system of electric car according to claim 1, it is characterised in that: coolant cooling circuit (A) includes dissipating
Hot device (40), the both ends of radiator (40) by cooling line respectively with battery pack (20) heat exchanger plates coolant inlet, outlet phase
Even, on the cooling line that water pump (30) is arranged between radiator (40) and battery pack (20), radiator (40) side is also set up
There are fan (80).
3. the cooling system of electric car according to claim 2, it is characterised in that: battery pack (20) and radiator (40)
Between cooling line on be additionally provided with the first solenoid valve (51), on the cooling line between battery pack (20) and heat exchanger (10)
It is provided with second solenoid valve (52), the first and second solenoid valve (51,52) controls coolant cooling circuit (A), High-temperature cooling circuit respectively
(B) connection and disconnection.
4. the cooling system of electric car according to claim 3, it is characterised in that: heat exchanger is provided with electronics on (10)
Expansion valve (100), electric expansion valve (100) control the connection and disconnection of heat exchanger (10) and air conditioner cooling cycle system.
5. the cooling system of electric car according to claim 1, it is characterised in that: the air conditioner cooling cycle system
Including compressor (60), condenser (70), the side of condenser (70) is provided with fan (80), heat exchanger (10) and compressor
(60) it is provided with pressure-temperature sensor (90) between and between compressor (60) and condenser (70).
6. the cooling system of electric car according to claim 3, it is characterised in that: close on battery pack (20), water pump
(30) temperature sensor (110) are additionally provided on cooling line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920227869.8U CN209487668U (en) | 2019-02-22 | 2019-02-22 | The battery cooling system of electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920227869.8U CN209487668U (en) | 2019-02-22 | 2019-02-22 | The battery cooling system of electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209487668U true CN209487668U (en) | 2019-10-11 |
Family
ID=68133990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920227869.8U Active CN209487668U (en) | 2019-02-22 | 2019-02-22 | The battery cooling system of electric car |
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| CN (1) | CN209487668U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416176A (en) * | 2020-04-07 | 2020-07-14 | 奇瑞商用车（安徽）有限公司 | VCU control-based whole vehicle heat dissipation system and method |
| CN111430840A (en) * | 2020-03-31 | 2020-07-17 | 蜂巢能源科技有限公司 | Control method and control system for delaying thermal diffusion of power battery pack |
| CN112952956A (en) * | 2021-03-30 | 2021-06-11 | 三一汽车制造有限公司 | Power supply equipment |
| CN113022365A (en) * | 2019-12-23 | 2021-06-25 | 北京新能源汽车股份有限公司 | Cooling circuit for liquid cooling battery replacement |
| CN113451674A (en) * | 2021-06-29 | 2021-09-28 | 徐州徐工矿业机械有限公司 | Engineering vehicle battery heat management system and method |
| CN113794004A (en) * | 2021-09-16 | 2021-12-14 | 远景能源有限公司 | Cooling system and method |
| CN114512743A (en) * | 2022-01-13 | 2022-05-17 | 中国第一汽车股份有限公司 | Cooling system and method of power battery pack and electric vehicle |
-
2019
- 2019-02-22 CN CN201920227869.8U patent/CN209487668U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113022365A (en) * | 2019-12-23 | 2021-06-25 | 北京新能源汽车股份有限公司 | Cooling circuit for liquid cooling battery replacement |
| CN113022365B (en) * | 2019-12-23 | 2022-10-21 | 北京新能源汽车股份有限公司 | Cooling circuit for liquid cooling battery replacement |
| CN111430840A (en) * | 2020-03-31 | 2020-07-17 | 蜂巢能源科技有限公司 | Control method and control system for delaying thermal diffusion of power battery pack |
| CN111416176A (en) * | 2020-04-07 | 2020-07-14 | 奇瑞商用车（安徽）有限公司 | VCU control-based whole vehicle heat dissipation system and method |
| CN111416176B (en) * | 2020-04-07 | 2021-07-27 | 奇瑞商用车（安徽）有限公司 | VCU control-based whole vehicle heat dissipation method |
| CN112952956A (en) * | 2021-03-30 | 2021-06-11 | 三一汽车制造有限公司 | Power supply equipment |
| CN113451674A (en) * | 2021-06-29 | 2021-09-28 | 徐州徐工矿业机械有限公司 | Engineering vehicle battery heat management system and method |
| CN113451674B (en) * | 2021-06-29 | 2023-03-24 | 徐州徐工矿业机械有限公司 | Engineering vehicle battery heat management system and method |
| CN113794004A (en) * | 2021-09-16 | 2021-12-14 | 远景能源有限公司 | Cooling system and method |
| CN114512743A (en) * | 2022-01-13 | 2022-05-17 | 中国第一汽车股份有限公司 | Cooling system and method of power battery pack and electric vehicle |
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