CN112072204A - Immersed electric automobile lithium battery pack cooling system with built-in spray pipe - Google Patents
Immersed electric automobile lithium battery pack cooling system with built-in spray pipe Download PDFInfo
- Publication number
- CN112072204A CN112072204A CN202010875966.5A CN202010875966A CN112072204A CN 112072204 A CN112072204 A CN 112072204A CN 202010875966 A CN202010875966 A CN 202010875966A CN 112072204 A CN112072204 A CN 112072204A
- Authority
- CN
- China
- Prior art keywords
- battery pack
- lithium battery
- spray pipe
- built
- centrifugal pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007921 spray Substances 0.000 title claims abstract description 53
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 51
- 238000001816 cooling Methods 0.000 title claims abstract description 38
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- 230000017525 heat dissipation Effects 0.000 claims description 25
- 239000000110 cooling liquid Substances 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 239000012809 cooling fluid Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- 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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- 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
-
- 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 invention relates to the field of electric automobile lithium battery cooling, in particular to an immersed electric automobile lithium battery pack cooling system with a built-in spray pipe, which comprises a centrifugal pump, an insulating cooling oil tank, an oil suction pipe, a spray pipe pipeline, a spray pipe, an oil return pipe, a current sensor, a temperature sensor, a lithium battery pack, a radiating copper sheet, a battery pack box body and a control system, wherein the control system comprises a control module, a feedback module and an output module. The built-in spray pipe of box just can make the fluid of battery pack case form the vortex and the jet impact increases the heat transfer nature of cooling fluid with the group battery of below, thereby can adjust the size of centrifugal pump flow through the sensor simultaneously and reduce the loss of electric quantity.
Description
Technical Field
The invention relates to the field of electric automobile lithium battery cooling, in particular to an immersed electric automobile lithium battery pack cooling system with a built-in spray pipe.
Background
With the gradual exhaustion of fossil energy and the gradual severe greenhouse effect, exhaust gas generated by a fuel engine becomes one of the largest greenhouse gas sources, and electric vehicles and hybrid vehicles have better advantages than conventional vehicles in terms of energy efficiency and emission reduction, and thus are generally regarded as important worldwide.
As a core component of a pure electric vehicle, the temperature of a battery pack can rapidly rise in the complex processes of charging and discharging of a power lithium battery, particularly when the vehicle accelerates and climbs a slope. If the battery pack is in a high temperature state for a long time, the service life and safety of the battery are greatly threatened. The lithium battery pack is simply immersed in the cooling liquid or the cooling liquid simply flows in the battery box body, so that the immersed cooling effect cannot be exerted to the maximum.
Disclosure of Invention
In order to solve the technical problem, the immersed electric vehicle lithium battery pack cooling system with the built-in spray pipe is provided, and the heat dissipation effect and the stability of the immersed cooling system are effectively enhanced by the technical scheme.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a cooling system of an immersed electric automobile lithium battery pack with a built-in spray pipe comprises a centrifugal pump, an insulating cooling oil tank, an oil suction pipe, a spray pipe pipeline, a spray pipe, an oil return pipe, a current sensor, a temperature sensor, a lithium battery pack, a heat dissipation copper sheet, a battery pack box body and a control system, wherein the control system comprises a control module, a feedback module and an output module;
the lithium battery pack is immersed in a battery pack box body filled with insulating cooling liquid;
the heat dissipation copper sheet is fixedly arranged on the lithium battery pack and used for dissipating heat of the lithium battery pack;
the nozzle is positioned above the inner side of the battery pack box body and is connected with the spray pipe pipeline and used for downwards flushing the heat dissipation copper sheet to accelerate heat dissipation;
the centrifugal pump is connected with an insulating cooling oil tank through an oil suction pipe, the insulating cooling oil tank is connected with the battery pack box body through an oil return pipe, and the centrifugal pump works to drive the oil way to circularly flow;
the current sensor, the temperature sensor and the radiating copper sheet form a feedback module, the current sensor is used for detecting the current of the lithium battery pack, and the temperature sensor is used for detecting the heat productivity of the lithium battery pack;
the centrifugal pump and the spray pipe form an output module.
Preferably, one end of the spray pipe pipeline is connected with the outlet end of the centrifugal pump, and the other end of the spray pipe pipeline extends into the upper part of the inner side of the battery pack box body.
Preferably, the number of the spray pipes is a plurality, all the spray pipes are uniformly arranged on the spray pipe pipeline, and the spray directions of all the spray pipes are vertically downward and just opposite to the heat dissipation copper sheet.
Preferably, one end of the oil suction pipe is connected with the inlet end of the centrifugal pump, the other end of the oil suction pipe is connected with the insulating cooling oil tank, and the two ends of the oil return pipe are respectively connected with the insulating cooling oil tank and the battery pack box body.
Preferably, the temperature sensor is arranged on the heat dissipation copper sheet.
Preferably, the current sensor is arranged on the lithium battery pack and used for measuring the current of the lithium battery pack.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the encapsulated lithium battery pack is immersed in the battery pack box through the insulating cooling oil, when the electric vehicle accelerates, climbs or the temperature of the oil rises due to other reasons, the electric vehicle feeds back the electric vehicle to the control device through the sensor, and the control device adjusts the flow of the centrifugal pump according to the feedback signal. The built-in spray pipe of box just can make the fluid of battery pack case form the vortex and the jet impact increases the heat transfer nature of cooling fluid with the group battery of below, thereby can adjust the size of centrifugal pump flow through the sensor simultaneously and reduce the loss of electric quantity.
Drawings
FIG. 1 is a front view of a system circuit of the present invention;
FIG. 2 is a top view of the battery pack case of the present invention;
FIG. 3 is a right side view of the battery pack housing of the present invention;
fig. 4 is a perspective view of the internal structure of the battery pack case of the present invention;
description of the drawings: the device comprises a spray pipe pipeline 1, a centrifugal pump 3, an oil suction pipe 4, an insulating cooling oil tank 5, an oil return pipe 6, a spray pipe 7, a battery pack box 8, a temperature sensor 9, a lithium battery pack 10, a heat dissipation copper sheet 11 and a current sensor 12.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Referring to fig. 1 to 4, the immersed electric vehicle lithium battery pack cooling system with the built-in spray pipe comprises a centrifugal pump 3, an insulating cooling oil tank 5, an oil suction pipe 4, a spray pipe pipeline 1, a spray pipe 7, an oil return pipe 6, a current sensor 13, a temperature sensor 9, a lithium battery pack 10, a heat dissipation copper sheet 12, a battery pack box body 8 and a control system, wherein the control system comprises a control module, a feedback module and an output module;
the lithium battery pack 10 is immersed in a battery pack box 8 filled with an insulating cooling liquid; the lithium battery pack 10 of the electric vehicle is immersed in a battery pack box filled with an insulating coolant after being packaged.
The heat dissipation copper sheet 12 is fixedly arranged on the lithium battery pack 10 and used for dissipating heat of the lithium battery pack 10; the lithium battery pack 10 is packaged at two electrode lugs by heat dissipation copper sheets 12, and heat exchange is carried out between the heat dissipation copper sheets 12 and cooling liquid of the battery pack box.
The nozzle is positioned above the inner side of the battery pack box body 8 and connected with the spray pipe pipeline 1 and used for downwards flushing the heat dissipation copper sheet 12 to accelerate heat dissipation;
the centrifugal pump 3 is connected with an insulating cooling oil tank 5 through an oil suction pipe 4, the insulating cooling oil tank 5 is connected with a battery pack box body 8 through an oil return pipe 6, and the work of the centrifugal pump 3 drives an oil way to circularly flow;
the current sensor 13, the temperature sensor 9 and the radiating copper sheet 12 form a feedback module, the current sensor 13 is used for detecting the current of the lithium battery pack 10, and the temperature sensor 9 is used for detecting the heat productivity of the lithium battery pack 10;
the centrifugal pump 3 and the spray pipe 7 form an output module.
The feedback module can feed back the temperature of the battery pack box and the current value of the lithium battery to the control module, and then the control module controls the work and the flow of the centrifugal pump 3.
One end of the spray pipe pipeline 1 is connected with the outlet end of the centrifugal pump 3, and the other end of the spray pipe pipeline extends into the upper part of the inner side of the battery pack box body 8.
The number of the spray pipes 7 is a plurality, all the spray pipes 7 are uniformly arranged on the spray pipe pipeline 1, and the spray directions of all the spray pipes 7 are vertically downward and just opposite to the heat dissipation copper sheets 12.
One end of the oil suction pipe 4 is connected with the inlet end of the centrifugal pump 3, the other end of the oil suction pipe is connected with the insulating cooling oil tank 5, and the two ends of the oil return pipe 6 are respectively connected with the insulating cooling oil tank 5 and the battery pack box body 8.
The temperature sensor 9 is arranged on the heat dissipation copper sheet 12.
The current sensor 13 is disposed on the lithium battery pack 10 for measuring a current of the lithium battery pack 10.
When the temperature of the cooling liquid in the battery pack box or the current of the lithium battery pack 10 reaches a preset value, a signal value is fed back to the control module by the temperature sensor 9 in the feedback module, the control module controls the centrifugal pump 3 to work, so that the cooling liquid in the battery pack box body 8 is discharged out of the box body and returns to the insulating cooling oil tank 5, and then new cooling liquid is supplemented through the spray pipe 7.
When the lithium battery pack 10 generates a large amount of heat at two pole lugs of the battery pack due to the instant current increase, the jet flow impact at the position of the cooling liquid in the battery pack box can be generated through the spray pipe 7 to increase the heat transfer performance of the cooling liquid.
The working process of the cooling system of the lithium battery pack 10 of the immersed electric vehicle with the built-in spray pipe 7 comprises the following steps: when the electric automobile is in the stable process of traveling at a constant speed, after the temperature of the cooling liquid in the battery pack box body 8 is increased to a rated value, a signal can be fed back to the control module through the temperature sensor 9 installed on the heat dissipation copper sheet 12, the control module starts to work along with the centrifugal pump 3, the cooling liquid is pumped out of the insulating cooling box body by the centrifugal pump 3, jet impact is formed through the spray pipe 7, then jet impact is formed in the battery pack box body 8, the heat dissipation strengthening process is completed, when the temperature starts to be reduced, the temperature sensor 9 can feed back the signal to the control module, the flow of the centrifugal pump 3 can be reduced by the control module, and the centrifugal pump 3 stops working through the feedback signal until the temperature of the.
When the electric automobile accelerates or climbs a slope or charges a battery, the current of the battery can be instantly increased and then releases a large amount of heat, the centrifugal pump 3 can work through a signal value fed back by the current sensor 13, when the current tends to be stable, the flow of the centrifugal pump 3 is adjusted in real time by the temperature sensor 9 according to the temperature value of the cooling liquid, and the centrifugal pump 3 stops working through a feedback signal until the temperature of the cooling liquid reaches a safety value.
The invention can ensure that the electric automobile does not lose efficacy or even catch fire due to the heating of the lithium battery pack 10 to a certain extent, and can be widely applied to the electric automobile industry or products using high-power battery packs.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The immersed electric automobile lithium battery pack cooling system with the built-in spray pipe is characterized by comprising a centrifugal pump (3), an insulating cooling oil tank (5), an oil suction pipe (4), a spray pipe pipeline (1), a spray pipe (7), an oil return pipe (6), a current sensor (13), a temperature sensor (9), a lithium battery pack (10), a heat dissipation copper sheet (12), a battery pack box body (8) and a control system, wherein the control system comprises a control module, a feedback module and an output module;
the lithium battery pack (10) is immersed in a battery pack box body (8) filled with insulating cooling liquid;
the heat dissipation copper sheet (12) is fixedly arranged on the lithium battery pack (10) and used for dissipating heat of the lithium battery pack (10);
the nozzle is positioned above the inner side of the battery pack box body (8) and connected with the spray pipe pipeline (1) and used for washing the heat dissipation copper sheet (12) downwards to accelerate heat dissipation;
the centrifugal pump (3) is connected with an insulating cooling oil tank (5) through an oil suction pipe (4), the insulating cooling oil tank (5) is connected with a battery pack box body (8) through an oil return pipe (6), and the centrifugal pump (3) works to drive an oil way to circularly flow;
the current sensor (13), the temperature sensor (9) and the heat dissipation copper sheet (12) form a feedback module, the current sensor (13) is used for detecting the current of the lithium battery pack (10), and the temperature sensor (9) is used for detecting the heat productivity of the lithium battery pack (10);
the centrifugal pump (3) and the spray pipe (7) form an output module.
2. The lithium battery pack cooling system of the submerged electric automobile with the built-in spray pipe as claimed in claim 1, wherein one end of the spray pipe pipeline (1) is connected with the outlet end of the centrifugal pump (3), and the other end of the spray pipe pipeline extends into the upper inner side of the battery pack box body (8).
3. The lithium battery pack cooling system of the submerged electric automobile with the built-in spray pipes as claimed in claim 2, wherein the number of the spray pipes (7) is several, all the spray pipes (7) are uniformly arranged on the spray pipe pipeline (1), and the spraying directions of all the spray pipes (7) are vertically downward and directly opposite to the heat dissipation copper sheets (12).
4. The lithium battery pack cooling system of the submerged electric automobile with the built-in spray pipe as claimed in claim 1, wherein one end of the oil suction pipe (4) is connected with the inlet end of the centrifugal pump (3), the other end of the oil suction pipe is connected with the insulating cooling oil tank (5), and the two ends of the oil return pipe (6) are respectively connected with the insulating cooling oil tank (5) and the battery pack box body (8).
5. The lithium battery pack cooling system of the immersed electric vehicle with the built-in nozzle as claimed in claim 1, wherein the temperature sensor (9) is arranged on the heat dissipation copper sheet (12).
6. The system for cooling the lithium battery pack of the submerged electric vehicle with the built-in nozzle as claimed in claim 1, wherein the current sensor (13) is arranged on the lithium battery pack (10) for measuring the current of the lithium battery pack (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875966.5A CN112072204A (en) | 2020-08-27 | 2020-08-27 | Immersed electric automobile lithium battery pack cooling system with built-in spray pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875966.5A CN112072204A (en) | 2020-08-27 | 2020-08-27 | Immersed electric automobile lithium battery pack cooling system with built-in spray pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112072204A true CN112072204A (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010875966.5A Pending CN112072204A (en) | 2020-08-27 | 2020-08-27 | Immersed electric automobile lithium battery pack cooling system with built-in spray pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112072204A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864490A (en) * | 2021-01-14 | 2021-05-28 | 哈尔滨工程大学 | Bubbling type power battery thermal management system based on refrigerant gas-liquid two-phase heat exchange |
| CN113471576A (en) * | 2021-07-19 | 2021-10-01 | 合肥工业大学 | Oil-cooled battery thermal management system and control method |
| CN113675502A (en) * | 2021-08-17 | 2021-11-19 | 苏州清陶新能源科技有限公司 | Cooling medium flow control method of battery module and battery module |
| CN113740757A (en) * | 2021-08-20 | 2021-12-03 | 中国电子科技集团公司第四十三研究所 | Metal full-sealed power module immersion type aging system and method |
| CN114641184A (en) * | 2022-03-24 | 2022-06-17 | 奇瑞汽车股份有限公司 | Electronic component cooling system and electronic equipment |
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| CN213150864U (en) * | 2020-08-27 | 2021-05-07 | 安徽工程大学 | Immersed electric automobile lithium battery pack cooling system with built-in spray pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864490A (en) * | 2021-01-14 | 2021-05-28 | 哈尔滨工程大学 | Bubbling type power battery thermal management system based on refrigerant gas-liquid two-phase heat exchange |
| CN113471576A (en) * | 2021-07-19 | 2021-10-01 | 合肥工业大学 | Oil-cooled battery thermal management system and control method |
| CN113675502A (en) * | 2021-08-17 | 2021-11-19 | 苏州清陶新能源科技有限公司 | Cooling medium flow control method of battery module and battery module |
| CN113740757A (en) * | 2021-08-20 | 2021-12-03 | 中国电子科技集团公司第四十三研究所 | Metal full-sealed power module immersion type aging system and method |
| CN114641184A (en) * | 2022-03-24 | 2022-06-17 | 奇瑞汽车股份有限公司 | Electronic component cooling system and electronic equipment |
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