CN114447471A - Automobile, automobile battery cooling system and cooling method - Google Patents
Automobile, automobile battery cooling system and cooling method Download PDFInfo
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- CN114447471A CN114447471A CN202210015487.5A CN202210015487A CN114447471A CN 114447471 A CN114447471 A CN 114447471A CN 202210015487 A CN202210015487 A CN 202210015487A CN 114447471 A CN114447471 A CN 114447471A
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- 238000001816 cooling Methods 0.000 title claims abstract description 189
- 239000007788 liquid Substances 0.000 claims abstract description 80
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 15
- 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 36
- 239000001301 oxygen Substances 0.000 claims description 36
- 229910052760 oxygen Inorganic materials 0.000 claims description 36
- 239000007789 gas Substances 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 12
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 239000003507 refrigerant Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/65—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
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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
- H01M10/65—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 and the automobile battery cooling system comprise 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 used for receiving wind 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 exchange pipeline used 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 for 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 air in the running process of the automobile to dissipate heat of the battery pack, air-conditioning cold air displaced in the cab is led to the air exchange pipeline to enter the air cooling pipeline, the air cooling effect is improved, liquid in the liquid cooling pipeline absorbs a cold source generated in the braking unit, and then the liquid absorbs heat exchange cooling for 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 an automobile battery cooling method.
Background
The service life and the energy consumption ratio of the new energy automobile battery and the use environment, particularly the temperature, of the new energy automobile battery play a vital role; when the automobile power battery is used, the battery monomer can generate heat, so that the performance of the battery is influenced.
The existing battery pack is cooled by air and water, but the existing air cooling device and the existing liquid cooling device need to respectively enhance airflow flowing and refrigerant circulation for heat dissipation by consuming electric energy of an automobile, so that the energy efficiency ratio of the whole automobile is reduced.
Disclosure of Invention
The purpose of the invention is: the automobile, the automobile battery cooling system and the cooling method are provided, so that the automobile battery pack can be cooled under the condition of not consuming electric energy.
In a first aspect, 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 used for receiving wind 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 exchange pipeline used 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 of 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 provided by the embodiment of the invention has the beneficial effects that: the air cooling pipeline is used for receiving air in the driving process of the automobile to dissipate heat of the battery pack, and meanwhile, air-conditioning cold air replaced in the cab is led to the air changing pipeline to enter the air cooling pipeline, so that the air cooling effect is improved, and meanwhile, the air-conditioning cold air in the cab can be fully utilized; and then the liquid in the liquid cooling pipeline absorbs the cold source generated in the heat exchange unit, and then the liquid is subjected to heat exchange and cooling for the battery pack, so that the whole system does not need to consume extra electric energy, and the whole energy efficiency of the automobile is improved.
Furthermore, a valve for opening and closing the air exchange pipeline is also arranged on the air exchange 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 member. In this embodiment, the valve member of the air exchange pipeline is the solenoid valve, and oxygen concentration detection unit includes oxygen concentration sensor and treater, solenoid valve and oxygen concentration sensor all with treater electric connection, oxygen concentration sensor is used for detecting the oxygen concentration content in the driver's cabin, when oxygen concentration drops to the treater set point, the treater gives an opening signal for the solenoid valve, in the air exchange pipeline discharges the air conditioner cold wind in the driver's cabin into the air-cooled pipeline, along with the wind of air-cooled pipeline flows the value battery package together, dispels the heat for the battery package.
Further, the heat exchange unit comprises a compressed gas cylinder, a pressure reduction pipeline, a brake pipeline, a driving pipeline and a tank body, wherein a gas inlet and a gas outlet are formed in the tank body, and the compressed gas cylinder is connected with the gas inlet through the pressure reduction pipeline; one end of the brake pipeline is connected with the air outlet, and the other end of the brake pipeline is used for being connected with an automobile brake unit; one end of the driving pipeline is used for being connected with an exhaust port of an automobile brake unit, and the other end of the driving pipeline is connected with the pump;
the liquid cooling pipeline penetrates through the tank body. The interior of the tank body is of a hollow structure, so that the air pressure is suddenly reduced when compressed air in a compressed air bottle enters the tank body, the requirement of an automobile brake unit is met, the compressed air can expand to absorb 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 the heat exchange work is realized; meanwhile, compressed air exhausted after the automobile brake 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 of the tank body in contact with the tank body, and the part of the liquid cooling pipeline, which is positioned inside the tank body, is distributed in a spiral shape. The liquid cooling pipeline penetrates through the tank body, mainly the liquid (refrigerant) in the liquid cooling pipeline absorbs a cold source in the tank body, and meanwhile, the liquid cooling pipeline in the tank body is distributed in a spiral shape, 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 of the tank body, which is in contact with the tank body, so that the leakage of compressed gas in the tank body can be avoided.
Further, the pump is a pneumatic pump. The pneumatic pump can be adopted to better utilize the compressed air discharged by the automobile brake unit after working 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 surfaces 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 means for the battery pack, which cools most of the area of the battery pack. The liquid cooling can be started only when the brake unit works, and the effect of increasing the cooling effect is mainly achieved. The cooling area is reasonably distributed, the electric energy of the automobile is not 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 chamber, wherein the inlet end and the play liquid end of liquid cooling pipeline all communicate the cooling chamber forms circulation circuit. The cooling chamber is arranged, so that cooling is more uniform, leakage is not easy to cause, and the influence of liquid cooling pipeline leakage on the battery pack is avoided.
Furthermore, the side surfaces and the upper end surface of the periphery of the battery pack are provided with fins for heat dissipation. The fin helps the heat dissipation to the battery package, improves the radiating effect.
In a third aspect, the present invention also provides a battery cooling method, including the steps of:
receiving wind in the running process of the automobile through a wind cooling pipeline so as to cool the upper surface and the side surface of the battery pack by wind;
conveying air-conditioning cold air in a cab to the air-cooling pipeline through an air exchange pipeline so as to carry out air cooling on the upper surface and the side surface of the battery pack;
and the lower surface of the battery pack is subjected to liquid cooling through the liquid cooling pipeline.
The beneficial effects of the method are the same as those of the battery cooling system, and are not described in detail herein.
Further, the oxygen concentration in the cab is detected through the oxygen concentration detection unit, when the oxygen concentration in the cab is smaller than a preset value, the processor opens the valve on the air exchange pipeline so as to enable the air exchange pipeline to be communicated with the air cooling pipeline, and air conditioning cold air in the cab is conveyed to the air cooling pipeline through the air exchange pipeline so as to carry out air cooling on the upper surface and the side surface of the battery pack. Through the change of the air conditioner cold air in the control cab of the oxygen concentration detection unit, the phenomenon that the air conditioner cold air in the cab is changed all the time and electric energy is wasted or the phenomenon that a driver or passengers are uncomfortable or even suffocate due to the fact that air is not changed all the time can be avoided.
Drawings
FIG. 1 is a schematic view 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-cooled 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 depressurization line; 34. a compressed gas cylinder; 35. a braking gas circuit; 36. a driving gas circuit; 37. a pump machine; 38. a cooling plate; 4. a cab; 5. and a brake unit.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "inside", "around", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 2, the present invention according to an embodiment of the present invention provides a battery cooling system including: the air cooling device 2 and the 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 the running process of the automobile, and the other end of the air cooling pipeline is an air outlet; an air exchange pipeline 22 for communicating the cab 4 with the air cooling pipeline 21 is arranged on the air cooling pipeline 21; the liquid cooling device 3 includes a liquid cooling pipe 31, a heat exchanging 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 of the vehicle in the forward direction, the opening of the air-cooled pipeline faces the front end of the vehicle in the forward direction, and the air inlet is of a retractable structure, that is, the cross-sectional area of the air inlet is gradually reduced in the direction toward the outlet of the air-cooled pipeline 21 until the cross-sectional area of the air inlet is the same as that of the air-cooled pipeline 21, the air inlet adopting the retractable structure can receive more air, and meanwhile, the air speed in the air-cooled pipeline can be increased, so that the heat dissipation effect is 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 and can facilitate air discharge.
A valve 23 for opening and closing the air exchange pipeline is also arranged on the air exchange pipeline 22; 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 to the valve member 23.
In this embodiment, the valve 23 of the ventilation pipeline 22 is an electromagnetic valve, and the oxygen concentration detection unit includes an oxygen concentration sensor 24 and a processor, the electromagnetic valve and the oxygen concentration sensor 24 are both electrically connected to the processor, the oxygen concentration sensor 24 is used for detecting the oxygen concentration content in the cab 4, when the oxygen concentration drops to a set value of the processor, the processor gives an opening signal to the electromagnetic valve, the ventilation pipeline 22 discharges air conditioning cold air in the cab 4 into the ventilation pipeline 21, and the air flows along with the air of the ventilation pipeline 21 to the battery pack 1, so as to dissipate heat of the battery pack 1.
After the electromagnetic valve is opened, the air-cooled pipeline 21 is communicated with the air exchange pipeline 22, and because the air velocity of the air-cooled pipeline 21 is high, the air pressure is low, and the air velocity in the air exchange pipeline 22 is low, the air pressure is high, the air in the cab 4 can enter the air-cooled pipeline 21 through the air exchange pipeline 22, and the air in the cab 4 can automatically enter the air-cooled 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 gas cylinder 34, a pressure reducing pipeline 33, a brake pipeline 35, a driving pipeline 36 and a tank body 32, wherein the tank body 32 is provided with a gas inlet and a gas outlet, and the compressed gas cylinder 34 is connected with the gas inlet through the pressure reducing pipeline 33; one end of the brake pipeline 35 is connected with the air outlet, and the other end of the brake pipeline 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 body 32 is of a hollow structure, so that the air pressure is suddenly reduced when compressed air in the compressed air bottle 34 enters the tank body 32 to meet the requirement of an automobile brake unit, and the compressed air expands to absorb heat after the pressure in the tank body 32 is reduced, so that the temperature in the tank body 32 is reduced, a low-temperature cold source is formed, the liquid cooling pipeline 31 passing through the tank body 32 is cooled, and the heat exchange work is realized; meanwhile, compressed air exhausted after the automobile brake unit 5 works is collected through the driving pipeline 36 to drive the pump 37, 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 hermetically connected with the part contacted with the tank body; and the liquid cooling pipeline 31 is spirally distributed at the inner part of the tank 32. The liquid cooling pipeline 31 penetrates 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 distributed spirally, so that the liquid can fully absorb the cold source, and the heat exchange is fully completed; the liquid cooling pipeline 31 is hermetically connected with the part contacted with the tank body, so that the leakage of the compressed gas in the tank body can be avoided.
The pump 37 is a pneumatic pump; the pneumatic pump can be adopted to better utilize the compressed air discharged by the automobile brake unit after working 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, and cools most of the area of the battery pack 1. The liquid cooling is started only when the brake unit 5 works, and the effect of increasing the cooling effect is mainly achieved. The cooling area is reasonably distributed, the electric energy of the automobile is not 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 chamber is arranged inside the cooling plate 38, wherein the liquid inlet end and the liquid outlet end of the liquid cooling pipeline 31 are both communicated with the cooling chamber to form a circulation loop. Set up the cooling chamber, can be so that cool off more evenly also be difficult for causing the leakage simultaneously, avoided leaking the influence to battery package 1 by liquid cooling pipeline 31.
The peripheral side face and the upper end face of the battery pack 1 are provided with fins for heat dissipation. The fins help to dissipate heat of the battery pack 1, and improve the heat dissipation effect.
The battery cooling method of the embodiment comprises the following steps:
s1 receiving the wind from the vehicle through the wind cooling duct 21 to cool the upper surface and the side surface of the battery pack 1;
s2, the air-conditioning cold air in the cab 4 is delivered to the air-cooling pipeline 21 through the air-changing pipeline 21 to air-cool the upper surface and the side surface of the battery pack 1;
the oxygen concentration in the cab 4 is detected by the oxygen concentration detection unit, when the oxygen concentration in the cab 4 is smaller than a preset value, the processor opens the valve 23 on the air exchange pipeline to communicate the air exchange pipeline 22 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 exchange pipeline 22 to air-cool the upper surface and the side surface of the battery pack 1.
Compressed air released by the compressed air bottle 34 enters the tank body 32 and is depressurized to generate a low-temperature cold source;
the compressed gas collected by the driving pipeline 36 and discharged by the brake unit 5 drives the pump 37 to make the liquid in the liquid cooling pipeline 31 flow;
s3 is performed to cool the lower surface of the battery pack 1 through the liquid cooling pipe 31.
According to the working process of the invention, as shown in fig. 1-2, the working process is as follows: in the running process of the automobile, the air pressure applied to the air inlet of the air cooling pipeline 21 is large, the air pressure at the air outlet is small, and air enters from the air inlet and flows through the peripheral side face and the upper end face of the battery pack 1 to take away heat generated by the battery pack 1 in time.
The air conditioner is generally opened in the cab 4 to adjust the temperature in the cab 4, when the air conditioner of the automobile is internally circulated, the oxygen concentration in the cab 4 is gradually reduced, in order to ensure the driving safety and comfort, 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, and the replaced air temperature of 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 a signal of opening the valve 23, the valve 23 is opened, the air exchange pipeline 22 is communicated with the cab 4 and the air cooling pipeline 21, the air in the cab 4 flows into the air cooling pipeline 21, and the heat dissipation effect of the battery pack 1 is improved.
Meanwhile, in the braking process of the automobile, the compressed air bottle 34 drives the braking execution mechanism by releasing compressed air, and the automobile is braked, wherein the air pressure in the compressed air bottle 34 is higher and is generally higher than the air pressure value required by the braking execution mechanism, so the compressed air bottle 34 can reduce the pressure of the compressed air, and the compressed air in the pressure reduction process can absorb heat and reduce the temperature, so the air in the compressed air bottle 34 is reduced in the tank body 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 in contact 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 comes from the compressed air exhausted after the braking execution mechanism works. The cooling of the battery pack 1 by fully utilizing a cold source generated in the braking process is realized.
In other words, if the can 32 is directly contacted with the surface of the battery pack, the cold source generated during braking can be directly absorbed by the battery pack, and the loss of heat transfer can be reduced. However, the design is not favorable for 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 energy carrier, so that the heat exchange unit can be reasonably arranged, and the space of the automobile is fully utilized.
To sum up, the embodiment of the invention provides a battery cooling system and a cooling method, the air-cooling pipeline 21 receives air in the driving process of an automobile to dissipate heat of a battery pack 1, meanwhile, air-conditioning cold air replaced in a cab 4 is led to an air exchange pipeline 22 to enter the air-cooling pipeline 21, the air-cooling effect is improved, meanwhile, the air-conditioning cold air of the cab 4 can be fully utilized, then, liquid substances in the liquid-cooling pipeline 31 absorb a cold source generated in a braking unit 5, then, the liquid substances exchange heat for the battery pack 1 to 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 above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. An automotive battery cooling system, comprising:
an air cooling device comprising an air cooling pipeline; one end of the air cooling pipeline is an air inlet used for receiving wind 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 exchange pipeline used 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 of the liquid cooling pipeline and a pump for driving liquid in the liquid cooling pipeline to flow.
2. The automobile battery cooling system according to claim 1, wherein a valve for opening and closing the ventilation pipeline is further arranged on the ventilation 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 member.
3. The battery cooling system according to claim 1, wherein the heat exchange unit comprises a compressed gas cylinder, a pressure reduction pipeline, a brake pipeline, a driving pipeline and a tank body, a gas inlet and a gas outlet are formed in the tank body, and the compressed gas cylinder is connected with the gas inlet through the pressure reduction pipeline; one end of the brake pipeline is connected with the air outlet, and the other end of the brake pipeline is used for being connected with an automobile brake unit; one end of the driving pipeline is used for being connected with an exhaust port of an automobile brake unit, and the other end of the driving pipeline is connected with the pump;
the liquid cooling pipeline penetrates through the tank body.
4. The battery cooling system according to claim 3, wherein the liquid cooling lines are disposed in a spiral pattern inside the can.
5. The battery cooling system according to claim 1, wherein the pump is a pneumatic pump.
6. An automobile, comprising a battery pack and the automobile battery cooling system of any one of claims 1-5, wherein the upper surface and the side surfaces of the battery pack are both located in the air-cooled pipeline, and the liquid-cooled pipeline is located on the lower surface of the battery pack.
7. The automobile as claimed in claim 6, wherein a cooling plate is disposed on a lower surface of the battery pack, a cooling chamber is disposed inside the cooling plate, and a liquid inlet end and a liquid outlet end of the liquid cooling pipeline are both communicated with the cooling chamber to form a circulation loop.
8. The vehicle of claim 6, wherein the battery pack is provided with fins for heat dissipation on both the side surfaces and the upper surface.
9. A cooling method for an automotive battery, performed by the automotive battery cooling system according to any one of claims 1 to 5, characterized by comprising the steps of:
receiving wind in the running process of the automobile through a wind cooling pipeline so as to cool the upper surface and the side surface of the battery pack by wind;
conveying air-conditioning cold air in a cab to the air-cooling pipeline through an air exchange pipeline so as to carry out air cooling on the upper surface and the side surface of the battery pack;
and the lower surface of the battery pack is subjected to liquid cooling through the liquid cooling pipeline.
10. The method for cooling a vehicle battery according to claim 9, wherein the step of supplying air-conditioning cold air in a cab to the air-cooling duct through an air-exchange duct to air-cool an upper surface and a side surface of the battery pack includes:
the oxygen concentration in the cab is detected through the oxygen concentration detection unit, when the oxygen concentration in the cab is smaller than a preset value, the processor opens the valve on the air exchange pipeline to enable the air exchange pipeline to be communicated with the air cooling pipeline, and air conditioning cold air in the cab is conveyed to the air cooling pipeline through the air exchange pipeline to carry out air cooling on the upper surface and the side face of the battery pack.
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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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| 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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| CN114447471B CN114447471B (en) | 2024-02-20 |
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