CN114447471B - Automobile, automobile battery cooling system and cooling method - Google Patents
Automobile, automobile battery cooling system and cooling method Download PDFInfo
- Publication number
- CN114447471B CN114447471B CN202210015487.5A CN202210015487A CN114447471B CN 114447471 B CN114447471 B CN 114447471B CN 202210015487 A CN202210015487 A CN 202210015487A CN 114447471 B CN114447471 B CN 114447471B
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- 238000001816 cooling Methods 0.000 title claims abstract description 202
- 239000007788 liquid Substances 0.000 claims abstract description 82
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000004378 air conditioning Methods 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 33
- 239000001301 oxygen Substances 0.000 claims description 33
- 229910052760 oxygen Inorganic materials 0.000 claims description 33
- 239000007789 gas Substances 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 11
- 239000003507 refrigerant Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
Abstract
The invention relates to the technical field of battery cooling, and discloses an automobile, an automobile battery cooling system and a cooling method, wherein the automobile battery cooling system comprises an air cooling device and a liquid cooling device, and the air cooling device comprises an air cooling pipeline; one end of the air cooling pipeline is an air inlet for receiving air in the running process of the automobile, and the other end of the air cooling pipeline is an air outlet; the air cooling pipeline is provided with an air exchanging pipeline for communicating the cab with the air cooling pipeline; the liquid cooling device comprises a liquid cooling pipeline, a heat exchange unit for exchanging heat to the liquid cooling pipeline and a pump for driving liquid in the liquid cooling pipeline to flow. The air cooling pipeline is used for receiving the air in the running process of the automobile to radiate the battery pack, the air conditioning cold air displaced in the cab is led to the air exchanging pipeline to enter the air cooling pipeline, the air cooling effect is improved, the liquid in the liquid cooling pipeline absorbs the cold source generated in the brake unit, and the liquid is used for exchanging heat and cooling the battery pack, so that the whole system does not need to consume extra electric energy, and the energy efficiency of the whole automobile is improved.
Description
Technical Field
The invention relates to the technical field of battery cooling, in particular to an automobile, an automobile battery cooling system and a cooling method.
Background
The service life of the new energy automobile battery and the energy consumption ratio and the use environment, particularly the temperature, of the new energy automobile battery have a vital effect; when the automobile power battery is used, the battery monomer can generate heat, so that the performance of the battery is affected.
The cooling of the existing battery pack is usually air cooling and water cooling, but the existing additionally-installed air cooling device and liquid cooling device are required to enhance airflow and refrigerant circulation to dissipate heat respectively through the consumption of electric energy of the automobile, so that the energy efficiency ratio of the whole automobile is reduced.
Disclosure of Invention
The purpose of the invention is that: an automobile, an automobile battery cooling system and a cooling method are provided, so that heat dissipation of an automobile battery pack is achieved under the condition that electric energy is not consumed.
In order to achieve the above object, the present invention provides a battery cooling system comprising: an air cooling device and a liquid cooling device; the air cooling device comprises an air cooling pipeline; one end of the air cooling pipeline is an air inlet for receiving air in running of the automobile, and the other end of the air cooling pipeline is an air outlet; the air cooling pipeline is provided with an air exchanging pipeline for communicating the cab with the air cooling pipeline; the liquid cooling device comprises a liquid cooling pipeline, a heat exchange unit for exchanging heat with the liquid cooling pipeline and a pump for driving liquid in the liquid cooling pipeline to flow.
Compared with the prior art, the battery cooling system has the beneficial effects that: the air cooling pipeline is used for receiving air in the running process of the automobile to radiate heat of the battery pack, meanwhile, cold air of an air conditioner replaced in the cab is led into the air exchanging pipeline to enter the air cooling pipeline, the air cooling effect is improved, and meanwhile, the cold air of the air conditioner in the cab can be fully utilized; the liquid in the liquid cooling pipeline is allowed to absorb the cold source generated in the heat exchange unit, and then the liquid is allowed to exchange heat and cool the battery pack, so that the whole system does not need to consume extra electric energy, and the overall energy efficiency of the automobile is improved.
Furthermore, the air exchanging pipeline is also provided with a valve element for opening and closing the air exchanging pipeline; the cooling system further comprises an oxygen concentration detection unit for detecting the oxygen concentration in the cab, and the oxygen concentration detection unit is electrically connected with the valve. In this embodiment, the valve member of the ventilation pipeline is an electromagnetic valve, and the oxygen concentration detection unit includes an oxygen concentration sensor and a processor, both of which are electrically connected with the processor, the oxygen concentration sensor is used for detecting the oxygen concentration content in the cab, when the oxygen concentration is reduced to a set value of the processor, the processor gives an opening signal to the electromagnetic valve, the ventilation pipeline discharges air-conditioning cold air in the cab into the air-cooling pipeline, and the air-conditioning cold air flows into the battery pack along with the air of the air-cooling pipeline to dissipate heat of the battery pack.
Further, the heat exchange unit comprises a compressed gas cylinder, a pressure reducing pipeline, a brake pipeline, a driving pipeline and a tank body, wherein the tank body is provided with a gas inlet and a gas outlet, and the compressed gas cylinder is connected with the gas inlet through the pressure reducing pipeline; one end of the brake pipeline is connected with the air outlet, and the other end of the brake pipeline is connected with the automobile brake unit; one end of the driving pipeline is used for being connected with an exhaust port of the automobile brake unit, and the other end of the driving pipeline is connected with the pump;
the liquid cooling pipeline passes through the tank body. The inside of the tank body is of a hollow structure, so that the air pressure is suddenly reduced when the compressed air in the compressed air cylinder enters the inside of the tank body to meet the requirement of an automobile brake unit, the compressed air expands and absorbs heat after the pressure in the tank body is reduced, the temperature in the tank body is reduced, a low-temperature cold source is formed, a liquid cooling pipeline passing through the tank body is cooled, and heat exchange work is realized; meanwhile, compressed air discharged after the automobile braking unit works is collected through the driving pipeline to drive the pneumatic pump, so that the energy of the compressed air can be fully utilized, and the energy efficiency of the automobile is improved.
Furthermore, the liquid cooling pipeline is in sealing connection with the part contacted with the tank body, and the part of the liquid cooling pipeline positioned inside the tank body is spirally distributed. The liquid cooling pipeline passes through the tank body, mainly the liquid (refrigerant) in the liquid cooling pipeline absorbs the cold source in the tank body, and simultaneously the liquid cooling pipeline in the tank body is spirally distributed, so that the liquid can fully absorb the cold source, and the heat exchange is fully completed; the liquid cooling pipeline is in sealing connection with the part contacted with the tank body, so that the leakage of compressed gas in the tank body can be avoided.
Further, the pump machine is a pneumatic pump. The pneumatic pump can be used for better utilizing the compressed air discharged after the automobile brake unit works to drive. The energy of the compressed air can be fully utilized, and the energy efficiency of the automobile is improved.
In a second aspect, the invention provides an automobile, which comprises a battery and the automobile battery cooling system, wherein the upper surface and the side surface of the battery pack are both positioned in the air cooling pipeline, and the liquid cooling pipeline is arranged on the lower surface of the battery pack. Air cooling is used as the primary cooling mode of the battery pack, and the air cooling mode is used for cooling most of the area of the battery pack. The liquid cooling can only be started when the brake unit works, and the effect of increasing the cooling effect is mainly achieved. The cooling area is distributed reasonably, electric energy of the automobile is not required to be consumed, and the overall energy efficiency of the automobile is improved.
Further, the lower surface of battery package is equipped with the cooling plate, the inside of cooling plate is equipped with the cooling cavity, wherein liquid inlet end and the play liquid end of liquid cooling pipeline all communicate the cooling cavity forms the circulation loop. The cooling chamber is arranged, so that cooling is more uniform, leakage is not easy to occur, and the influence of leakage of a liquid cooling pipeline on a battery pack is avoided.
Furthermore, the peripheral side surfaces and the upper end surface of the battery pack are provided with ribs for heat dissipation. The ribs are beneficial to heat dissipation of the battery pack and improve heat dissipation effect.
In a third aspect, the present invention also provides a battery cooling method, comprising the steps of:
receiving wind in running of the automobile through an air cooling pipeline so as to air-cool the upper surface and the side surface of the battery pack;
the air-conditioning cold air in the cab is conveyed to the air-cooling pipeline through the air-exchanging pipeline so as to air-cool the upper surface and the side surface of the battery pack;
and (3) performing liquid cooling on the lower surface of the battery pack through a liquid cooling pipeline.
The beneficial effects of the method are the same as those of the battery cooling system, and are not repeated here.
Further, the oxygen concentration in the cab is detected by the oxygen concentration detection unit, when the oxygen concentration in the cab is smaller than a preset value, the processor opens a valve element on the air exchanging pipeline so that the air exchanging pipeline is communicated with the air cooling pipeline, and air-conditioning cold air in the cab is conveyed to the air cooling pipeline through the air exchanging pipeline so as to perform air cooling on the upper surface and the side surface of the battery pack. Through the change of the air conditioner cold wind in the control cab of oxygen concentration detection unit, can avoid the air conditioner cold wind in the cab to change always, waste electric energy, perhaps do not trade the wind always and can cause the uncomfortable of driver or passenger to appear choking even phenomenon.
Drawings
FIG. 1 is a schematic diagram of an air cooling device and a liquid cooling device according to an embodiment of the present invention;
FIG. 2 is a flow chart of a cooling method according to an embodiment of the present invention;
in the figure, 1, a battery pack; 2. an air cooling device; 21. an air cooling pipeline; 22. an air exchange pipeline; 23. a valve member; 24. an oxygen concentration sensor; 3. a liquid cooling device; 31. a liquid cooling pipeline; 32. a tank body; 33. a pressure reducing pipeline; 34. a compressed gas cylinder; 35. a brake air path; 36. driving the air circuit; 37. a pump machine; 38. a cooling plate; 4. a cab; 5. and a braking unit.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "bottom", "inner", "peripheral", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1-2, the present invention of an embodiment of the present invention provides a battery cooling system including: an air cooling device 2 and a liquid cooling device 3; the air cooling device 2 comprises an air cooling pipeline 21; one end of the air cooling pipeline 21 is an air inlet for receiving air in running of the automobile, and the other end of the air cooling pipeline is an air outlet; the air cooling pipeline 21 is provided with an air exchanging pipeline 22 for communicating the cab 4 and the air cooling pipeline 21; the liquid cooling device 3 includes a liquid cooling pipe 31, a heat exchange unit for exchanging heat with the liquid cooling pipe 31, and a pump 37 for driving the liquid in the liquid cooling pipe 31 to flow.
In this embodiment, the air inlet of the air-cooled pipeline 21 is located at the front part of the air-cooled pipeline in the forward direction, the opening of the air inlet faces the front end of the air-cooled pipeline in the forward direction, and the air inlet is of a contracted structure, that is, the cross-sectional area of the air inlet gradually decreases to be the same as the cross-sectional area of the air-cooled pipeline 21 in the direction of the outlet of the air-cooled pipeline 21, and the air inlet adopting the contracted structure can receive more wind, so that the wind speed in the air-cooled pipeline can be increased, and the heat dissipation effect can be improved. The air outlet structure of the air cooling pipeline 21 is a flaring structure, and the air outlet structure is opposite to the air inlet structure, so that air can be conveniently discharged.
The ventilation pipeline 22 is also provided with a valve piece 23 for opening and closing the ventilation pipeline; the cooling system further includes an oxygen concentration detection unit for detecting the oxygen concentration in the cab 4, and the oxygen concentration detection unit is electrically connected with the valve element 23.
In this embodiment, the valve member 23 of the ventilation pipeline 22 is a solenoid valve, and the oxygen concentration detection unit includes an oxygen concentration sensor 24 and a processor, where the solenoid valve and the oxygen concentration sensor 24 are both electrically connected to the processor, the oxygen concentration sensor 24 is used to detect the oxygen concentration content in the cab 4, and when the oxygen concentration drops to a set value of the processor, the processor gives an opening signal to the solenoid valve, and the ventilation pipeline 22 discharges the air-conditioning cold air in the cab 4 into the air-cooling pipeline 21, and flows with the air of the air-cooling pipeline 21 to obtain the value of the battery pack 1, so as to dissipate the heat of the battery pack 1.
When the electromagnetic valve is opened, the air cooling pipeline 21 is communicated with the air exchanging pipeline 22, and the air in the cab 4 can enter the air cooling pipeline 21 through the air exchanging pipeline 22 because the air flow rate of the air cooling pipeline 21 is high, the air pressure is small, and the air flow rate in the air exchanging pipeline 22 is low, so that the air in the cab 4 can automatically enter the air cooling pipeline 21 after the electromagnetic valve is opened. The working principle is similar to that of an ejector.
The heat exchange unit comprises a compressed air bottle 34, a pressure reducing pipeline 33, a brake pipeline 35, a driving pipeline 36 and a tank body 32, wherein an air inlet and an air outlet are formed in the tank body 32, and the compressed air bottle 34 is connected with the air inlet through the pressure reducing pipeline 33; one end of the brake pipeline 35 is connected with the air outlet, and the other end is used for being connected with an automobile brake unit; one end of the driving pipeline 36 is used for being connected with an exhaust port of the automobile brake unit, and the other end of the driving pipeline is connected with the pump 37;
the liquid cooling line 31 passes through the tank 32. The interior of the tank 32 is a hollow structure, so that the air pressure is suddenly reduced when the compressed air in the compressed air bottle 34 enters the interior of the tank 32, so as to meet the requirement of an automobile brake unit, and the compressed air can expand and absorb heat after the pressure in the interior of the tank 32 is reduced, so that the temperature in the interior of the tank 32 is reduced, a low-temperature cold source is formed, the liquid cooling pipeline 31 passing through the tank 32 is cooled, and the heat exchange work is realized; meanwhile, the pump 37 is driven by collecting the compressed air discharged after the automobile brake unit 5 works through the driving pipeline 36, so that the energy of the compressed air can be fully utilized, and the energy efficiency of the automobile is improved.
The liquid cooling pipeline 31 is in sealing connection with the contact part of the tank body; and the liquid cooling pipeline 31 is spirally distributed at the position inside the tank 32. The liquid cooling pipeline 31 passes through the tank body, mainly the liquid (refrigerant) in the liquid cooling pipeline 31 absorbs the cold source in the tank body, and meanwhile, the liquid cooling pipeline 31 in the tank body is spirally distributed, so that the liquid can fully absorb the cold source, and the heat exchange is fully completed; the liquid cooling pipeline 31 is in sealing connection with the part contacted with the tank body, so that the leakage of compressed gas in the tank body can be avoided.
The pump 37 is a pneumatic pump; the pneumatic pump can be used for better utilizing the compressed air discharged after the automobile brake unit works to drive. The energy of the compressed air can be fully utilized, and the energy efficiency of the automobile is improved.
The upper surface and the side of the battery pack 1 are both positioned in the air cooling pipeline 21, and the liquid cooling pipeline 31 is arranged on the lower surface of the battery pack 1. Air cooling is the primary cooling means for the battery pack, so that it cools most of the area of the battery pack 1. The liquid cooling is started only when the brake unit 5 works, and mainly plays a role in increasing the cooling effect. The cooling area is distributed reasonably, electric energy of the automobile is not required to be consumed, and the overall energy efficiency of the automobile is improved.
The lower surface of the battery pack 1 is provided with a cooling plate 38, and a cooling cavity is arranged in the cooling plate 38, wherein the liquid inlet end and the liquid outlet end of the liquid cooling pipeline 31 are communicated with the cooling cavity to form a circulation loop. The cooling chamber is arranged, so that cooling is more uniform and leakage is not easy to occur, and the influence of leakage of the liquid cooling pipeline 31 on the battery pack 1 is avoided.
The peripheral side surfaces and the upper end surface of the battery pack 1 are provided with ribs for heat dissipation. The ribs are helpful for heat dissipation of the battery pack 1 and improve heat dissipation effect.
The battery cooling method of the embodiment comprises the following steps:
s1, receiving wind in running of an automobile through an air cooling pipeline 21 so as to air-cool the upper surface and the side surface of the battery pack 1;
s2, conveying air-conditioning cold air in the cab 4 to the air cooling pipeline 21 through the air exchanging pipeline 21 so as to air-cool the upper surface and the side surface of the battery pack 1;
when the oxygen concentration in the cab 4 is smaller than a preset value, the processor opens the valve element 23 on the air exchanging pipeline to enable the air exchanging pipeline 22 to be communicated with the air cooling pipeline 21, and air-conditioning cold air in the cab 4 is conveyed to the air cooling pipeline 21 through the air exchanging pipeline 22 to perform air cooling on the upper surface and the side face of the battery pack 1.
Compressed air released by the compressed air bottle 34 enters the tank body 32 to be depressurized to generate a low-temperature cold source;
the compressed gas discharged from the brake unit 5 is collected through the driving pipeline 36 to drive the pump 37, so that the liquid in the liquid cooling pipeline 31 flows;
s3 liquid-cools the lower surface of the battery pack 1 through the liquid-cooling line 31.
The working process of the invention is as shown in fig. 1-2: in the running process of the automobile, the air inlet of the air cooling pipeline 21 receives larger air pressure, the air outlet is small in air pressure, and air enters from the air inlet and flows through the peripheral side surfaces and the upper end surface of the battery pack 1, so that heat generated by the battery pack 1 is timely taken away.
The air conditioner is generally opened in the cab 4 to adjust the temperature in the cab 4, and when the air conditioner circulates in the automobile, the oxygen concentration in the cab 4 is gradually reduced, so that the air in the cab 4 needs to be replaced when the oxygen concentration in the cab 4 is lower than a certain range value for ensuring the safety and comfort of driving, and the temperature of the replaced air in the cab 4 is generally lower than the outdoor temperature, so that the air conditioner is a good cold source. When the oxygen concentration value detected by the oxygen concentration sensor 24 in the cab 4 is lower than the set value of the processor, the processor gives an opening signal to the valve 23, the valve 23 is opened, the air exchanging pipeline 22 is communicated with the cab 4 and the air cooling pipeline 21, and air in the cab 4 flows into the air cooling pipeline 21, so that the heat dissipation effect of the battery pack 1 is improved.
Meanwhile, in the automobile braking process, the compressed air bottle 34 drives the braking executing mechanism by releasing compressed air, for automobile braking, the air pressure in the compressed air bottle 34 is higher and is usually higher than the air pressure value required by the braking executing mechanism, so the compressed air bottle 34 can decompress the compressed air, the compressed air in the decompression process absorbs heat and cools down, so the air in the compressed air bottle 34 cools down in the tank 32 to form a cold source, the cold source is absorbed by the refrigerant in the liquid cooling pipeline 31, the absorbed cold source is injected into the cooling cavity of the cooling plate 38, the battery pack 1 is contacted with the cooling plate 38 to absorb the cold source of the cooling plate 38, the refrigerant in the liquid cooling pipeline 31 is driven by the pump 37, and the power for driving the pump 37 is from the compressed gas discharged after working with the braking executing mechanism. The cooling of the battery pack 1 by fully utilizing the cold source generated in the braking process is realized.
In theory, if the can 32 is directly contacted with the surface of the battery pack, the heat loss due to heat transfer can be reduced by directly absorbing the heat sink generated during braking by the battery pack. However, the design is not beneficial to the arrangement of the battery pack and the heat exchange unit, and the space of the automobile cannot be fully utilized. And the refrigerant is selected as the carrier of energy, so that the reasonable arrangement of the heat exchange unit can be realized, and the space of the automobile is fully utilized.
In summary, the embodiment of the invention provides a battery cooling system and a cooling method, which dissipate heat of a battery pack 1 by enabling an air cooling pipeline 21 to receive air in the running process of an automobile, and simultaneously, enabling air conditioning cold air displaced in a cab 4 to be led into an air exchanging pipeline 22 and enter the air cooling pipeline 21, so that the air cooling effect is improved, meanwhile, the air conditioning cold air of the cab 4 can be fully utilized, the liquid in a liquid cooling pipeline 31 can absorb a cold source generated in a braking unit 5, the liquid can exchange heat for the battery pack 1 and cool, and the cold source generated in the braking process is fully utilized to cool the battery pack 1. The whole system does not need to consume extra electric energy, and the energy efficiency of the whole automobile is improved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (9)
1. An automotive battery cooling system, comprising:
the air cooling device comprises an air cooling pipeline; one end of the air cooling pipeline is an air inlet for receiving air in the running process of the automobile, the air inlet is positioned at the front part of the automobile in the front direction, the opening of the air inlet faces the front end of the automobile in the front direction, and the other end of the air inlet is an air outlet; the air cooling pipeline is provided with an air exchanging pipeline for communicating the cab with the air cooling pipeline; and
the liquid cooling device comprises a liquid cooling pipeline, a heat exchange unit for exchanging heat for the liquid cooling pipeline and a pump for driving liquid in the liquid cooling pipeline to flow,
the heat exchange unit comprises a compressed gas cylinder, a pressure reducing pipeline, a brake pipeline, a driving pipeline and a tank body, wherein the tank body is provided with a gas inlet and a gas outlet, and the compressed gas cylinder is connected with the gas inlet through the pressure reducing pipeline; one end of the brake pipeline is connected with the air outlet, and the other end of the brake pipeline is connected with the automobile brake unit; one end of the driving pipeline is used for being connected with an exhaust port of the automobile brake unit, and the other end of the driving pipeline is connected with the pump;
the liquid cooling pipeline passes through the tank body.
2. The automotive battery cooling system of claim 1, wherein the ventilation line is further provided with a valve element for opening and closing the ventilation line; the cooling system further comprises an oxygen concentration detection unit for detecting the oxygen concentration in the cab, and the oxygen concentration detection unit is electrically connected with the valve.
3. The battery cooling system of claim 1, wherein the liquid cooling lines are helically disposed within the tank.
4. The battery cooling system of claim 1, wherein the pump is a pneumatic pump.
5. An automobile, comprising a battery pack and the automobile battery cooling system according to any one of claims 1-4, wherein the upper surface and the side surface of the battery pack are both positioned in the air cooling pipeline, and the liquid cooling pipeline is arranged on the lower surface of the battery pack.
6. The automobile of claim 5, wherein a cooling plate is arranged on the lower surface of the battery pack, a cooling cavity is arranged in the cooling plate, and the liquid inlet end and the liquid outlet end of the liquid cooling pipeline are communicated with the cooling cavity to form a circulation loop.
7. The automobile of claim 5, wherein the side and upper surfaces of the battery pack are provided with ribs for heat dissipation.
8. A method of cooling an automotive battery, performed with the automotive battery cooling system according to any one of claims 1 to 4, characterized by comprising the steps of:
receiving wind in running of the automobile through an air cooling pipeline so as to air-cool the upper surface and the side surface of the battery pack;
the air-conditioning cold air in the cab is conveyed to the air-cooling pipeline through the air-exchanging pipeline so as to air-cool the upper surface and the side surface of the battery pack;
and (3) performing liquid cooling on the lower surface of the battery pack through a liquid cooling pipeline.
9. The method of cooling a battery of an automobile according to claim 8, wherein the step of supplying the air-conditioning cool air in the cab to the air-cooling duct through the air-exchanging duct to air-cool the upper surface and the side surface of the battery pack comprises:
the oxygen concentration in the cab is detected by the oxygen concentration detection unit, when the oxygen concentration in the cab is smaller than a preset value, the processor opens a valve element on the air exchanging pipeline so that the air exchanging pipeline is communicated with the air cooling pipeline, and air-conditioning cold air in the cab is conveyed to the air cooling pipeline through the air exchanging pipeline so as to perform air cooling on the upper surface and the side surface of the battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015487.5A CN114447471B (en) | 2022-01-07 | 2022-01-07 | Automobile, automobile battery cooling system and cooling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210015487.5A CN114447471B (en) | 2022-01-07 | 2022-01-07 | Automobile, automobile battery cooling system and cooling method |
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| CN114447471A CN114447471A (en) | 2022-05-06 |
| CN114447471B true CN114447471B (en) | 2024-02-20 |
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