CN110729526A - Immersed liquid-cooled battery pack - Google Patents
Immersed liquid-cooled battery pack Download PDFInfo
- Publication number
- CN110729526A CN110729526A CN201911126078.7A CN201911126078A CN110729526A CN 110729526 A CN110729526 A CN 110729526A CN 201911126078 A CN201911126078 A CN 201911126078A CN 110729526 A CN110729526 A CN 110729526A
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- Prior art keywords
- box
- battery
- liquid
- fan
- lower box
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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
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of 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
- H01M10/62—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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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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
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides an immersed liquid-cooled battery pack, comprising: a box cover; a battery case forming a sealed space with the case cover; the steam guide plate is a wedge-shaped plate with the middle part protruding upwards; the battery box is arranged in the middle of the battery box and is divided into an upper box and a lower box; the steam hole is positioned in the middle of the steam guide plate and is communicated with the upper box and the lower box; two liquid leakage grooves are formed in total, are respectively arranged at two sides of the steam guide plate and are communicated with the upper box and the lower box; the battery is fixedly installed in the lower box; cooling liquid is injected into the lower box to soak the battery, and the cooling liquid is low-boiling-point and insulating liquid with the boiling point of 30-70 ℃; the power fan is arranged and fixed on the steam hole on the steam guide plate; the stirring fan is installed and fixed at the bottom of the lower box and is soaked by the cooling liquid; the heat radiation fan is fixedly arranged on the box cover; the rotating shaft is a rotating shaft which is fixedly arranged on the power fan, the stirring fan and the cooling fan together.
Description
Technical Field
The invention relates to an immersed liquid-cooled battery pack.
Background
At present, the shortage and consumption of petroleum cause huge burden of the country, the development of environmental awareness and humanistic environment also puts forward requirements on transportation tools, so the development prospect of new energy vehicles is wide, one of the problems of the new energy vehicles is to solve the problems of endurance and safety, and the heat dissipation of batteries is a key part of the new energy vehicles.
Generally, the higher the power is, the higher the charge-discharge multiplying power required by the battery is, and the larger the heat generation quantity is; in some high-power application occasions, such as energy storage frequency modulation, in order to adapt to high-power application, the charge-discharge multiplying power can be reduced only by increasing the battery capacity, so that the battery cost is increased; in addition, when the battery is out of control due to heat, a large amount of heat is generated instantly, and at the moment, if the heat dissipation system is not in time to cool the battery, the danger of fire and explosion is caused; how to improve the heat dissipation effect of the battery is the key to solve the problems.
At present, for the battery loaded with the battery, the heat dissipation modes are mainly divided into direct cooling, air cooling and liquid cooling, the direct cooling is not uniform, and the cooling effect is not good; the air cooling is slow, the temperature reduction is uneven, and the cooling effect is poor; the liquid cooling mode utilizes cooling liquid circulation to dissipate heat, liquid cooling pipelines need to be arranged, a large amount of space is occupied, the system is complex and high in manufacturing cost, and liquid leakage hidden danger exists, so that the three modes cannot meet the requirement of battery heat dissipation in high-power application occasions.
Disclosure of Invention
The invention aims to overcome the defects and provide an immersion type liquid-cooling battery pack which can quickly dissipate heat of a battery system, keep the temperature within a certain range and improve the temperature consistency among single battery cores.
The invention adopts the following technical scheme:
an immersed liquid cooled battery pack comprising: a box cover; a battery case forming a sealed space with the case cover; the steam guide plate is a wedge-shaped plate with the middle part protruding upwards; the battery box is arranged in the middle of the battery box and is divided into an upper box and a lower box; the steam hole is positioned in the middle of the steam guide plate and is communicated with the upper box and the lower box; two liquid leakage grooves are formed in total, are respectively arranged at two sides of the steam guide plate and are communicated with the upper box and the lower box; the battery is fixedly installed in the lower box; cooling liquid is injected into the lower box, the battery is soaked, the liquid leakage groove is immersed, and the cooling liquid is low-boiling-point and insulating liquid with the boiling point of 30-70 ℃; the power fan is arranged and fixed on the steam hole on the steam guide plate; the stirring fan is installed and fixed at the bottom of the lower box and is soaked by the cooling liquid; the heat radiation fan is fixedly arranged on the box cover; the rotating shaft is a rotating shaft which is fixedly arranged on the power fan, the stirring fan and the cooling fan together.
Preferably, the cooling liquid is one of hydrofluorocarbon, hydrofluoroether, perfluorocarbon and fluorocarbon.
Preferably, the sealing of the battery box reaches the IP67 sealing protection level.
Preferably, there are multiple groups of said cells.
Preferably, the steam hole is a plurality of small holes arranged in a circumference, which is beneficial to generating steam pressure.
In conclusion, the beneficial effects of the invention are as follows: the cooling liquid is in direct contact with the battery, so that heat generated by the battery can be quickly absorbed, thermal runaway of the battery is inhibited, thermal diffusion is prevented, and the danger of fire and explosion caused by runaway of the battery is avoided; the battery can be used in high-power application occasions of a lithium ion battery system, such as energy storage frequency modulation and the like, can be charged and discharged at a high rate, meets the requirement of quick heat dissipation of the battery system under an extreme working condition, keeps the temperature within a certain range, improves the temperature consistency among single battery cores, has compact space volume and saves the battery cost; the invention also has the function of automatically adjusting the heat dissipation power, when the heat generated by the battery is larger and the steam pressure is larger, the power fan rotates faster, so that the heat dissipation fan is driven to rotate faster and the heat dissipation is faster; meanwhile, the faster the stirring fan in the cooling liquid rotates, the faster the temperature of the cooling liquid is uniform.
Drawings
FIG. 1 is a schematic of the present invention.
Fig. 2 is an overall schematic of the present invention.
Fig. 3 is a schematic view of a steam guide plate according to the present invention.
Fig. 4 is a schematic view of a preferred embodiment of the vapor vent of the present invention.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the present invention is further described with reference to the accompanying drawings and embodiments:
an immersed liquid-cooled battery pack as shown in fig. 1-3, comprising: a case cover 11; a battery case 1 forming a sealed space with the case cover 11; the steam guide plate 2 is a wedge-shaped plate with the middle part protruding upwards; the battery box is arranged in the middle of the battery box 1 and is divided into an upper box 12 and a lower box 13; a steam hole 21 positioned in the middle of the steam guide plate 2 and communicating the upper tank 12 and the lower tank 13; two liquid leakage grooves 22 are arranged on two sides of the steam guide plate 2 respectively and are communicated with the upper box 12 and the lower box 13; the battery 4 is fixedly installed in the lower box 13; cooling liquid is injected into the lower box 13, the battery 4 is soaked, the liquid leakage groove 22 is immersed, steam is prevented from flowing out of the liquid leakage groove 22, and the cooling liquid is low-boiling-point and insulating liquid with the boiling point of 30-70 ℃; the power fan 5 is installed and fixed on the steam hole 21 on the steam guide plate 2; the stirring fan 6 is fixedly arranged at the bottom of the lower box 13 and is soaked by the cooling liquid; a heat radiation fan 7 fixed on the case cover 11; and the rotating shaft 3 is a rotating shaft which is fixedly arranged on the power fan 5, the stirring fan 6 and the heat radiation fan 7 together.
Preferably, the cooling liquid is one of hydrofluorocarbon, hydrofluoroether, perfluorocarbon and fluorocarbon.
Preferably, the sealing of the battery box 1 reaches the IP67 sealing protection level.
Preferably, there are multiple groups of said batteries 4.
Preferably, as shown in fig. 4, the steam holes 21 are a plurality of small holes arranged circumferentially to facilitate the generation of steam pressure.
The working process of the invention is as follows:
when the heat is enough, the cooling liquid boils upwards to generate steam, and the steam is collected in the steam holes under the action of the steam guide plate 2 to push the power fan 5 to rotate.
Because the power fan 5, the stirring fan 6 and the heat dissipation fan 7 are installed on the fixed rotating shaft 3 together, the power fan 5 rotates to drive the stirring fan 6 and the heat dissipation fan 7 to rotate.
The gaseous cooling liquid is liquefied after contacting the box cover 1 or the box wall of the upper box 12 and being cooled, the liquid dropped on the steam guide plate 2 flows to the liquid leakage groove 22 along the steam guide plate 2, and then flows back to the lower box 13 to continue cooling the battery 4, thereby forming a thermal loop.
When the battery 4 works, the heat generation quantity of different parts is different, and the heat in the cooling liquid is upward, so that the temperature of the upper part of the cooling liquid is higher than that of the lower part of the cooling liquid, and the temperature difference of different parts of the cooling liquid can reach about 10 ℃ through tests, thereby influencing the consistency of the battery and the service life of the battery pack; the stirring fan 6 in the cooling liquid rotates to drive the cooling liquid to flow, so that the temperature uniformity of the cooling liquid is improved, and the temperature uniformity of the battery core is improved; the cooling liquid is stirred by the stirring fan 6, so that the cooling liquid can be quickly and uniformly stirred, and the consistency of the temperature of the battery cell is ensured; in addition, the heat radiation fan 7 rotates to accelerate heat taking away and improve cooling rate.
The invention also has the function of automatically adjusting the heat dissipation power, when the heat generated by the battery 4 is larger and the steam pressure is larger, the power fan 5 rotates faster, so that the heat dissipation fan 7 is driven to rotate faster and the heat dissipation is faster; and the faster the stirring fan 6 in the coolant rotates, the faster the temperature of the coolant is uniformed.
In conclusion, the beneficial effects of the invention are as follows: the cooling liquid is in direct contact with the battery, so that heat generated by the battery can be quickly absorbed, thermal runaway of the battery is inhibited, thermal diffusion is prevented, and the danger of fire and explosion caused by runaway of the battery is avoided; the battery can be used in high-power application occasions of a lithium ion battery system, such as energy storage frequency modulation and the like, can be charged and discharged at a high rate, meets the requirement of quick heat dissipation of the battery system under an extreme working condition, keeps the temperature within a certain range, improves the temperature consistency among single battery cores, has compact space volume and saves the battery cost; the invention also has the function of automatically adjusting the heat dissipation power, when the heat generated by the battery is larger and the steam pressure is larger, the power fan rotates faster, so that the heat dissipation fan is driven to rotate faster and the heat dissipation is faster; meanwhile, the faster the stirring fan in the cooling liquid rotates, the faster the temperature of the cooling liquid is uniform.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.
Claims (5)
1. An immersed liquid-cooled battery pack, comprising:
a box cover;
a battery case forming a sealed space with the case cover;
the steam guide plate is a wedge-shaped plate with the middle part protruding upwards; the battery box is arranged in the middle of the battery box and is divided into an upper box and a lower box;
the steam hole is positioned in the middle of the steam guide plate and is communicated with the upper box and the lower box;
two liquid leakage grooves are formed in total, are respectively arranged at two sides of the steam guide plate and are communicated with the upper box and the lower box;
the battery is fixedly installed in the lower box;
cooling liquid is injected into the lower box, the battery is soaked, the liquid leakage groove is immersed, and the cooling liquid is low-boiling-point and insulating liquid with the boiling point of 30-70 ℃;
the power fan is arranged and fixed on the steam hole on the steam guide plate;
the stirring fan is installed and fixed at the bottom of the lower box and is soaked by the cooling liquid;
the heat radiation fan is fixedly arranged on the box cover;
the rotating shaft is a rotating shaft which is fixedly arranged on the power fan, the stirring fan and the cooling fan together.
2. An immersed liquid-cooled battery pack as claimed in claim 1, wherein:
the cooling liquid is one of hydrofluorocarbon, hydrofluoroether, perfluorocarbon and fluorocarbon.
3. An immersed liquid-cooled battery pack as claimed in claim 1, wherein:
the sealing of the battery box reaches the IP67 sealing protection grade.
4. An immersed liquid-cooled battery pack as claimed in claim 1, wherein:
the batteries have a plurality of groups.
5. An immersed liquid-cooled battery pack as claimed in claim 1, wherein:
the steam hole is a plurality of small holes which are circumferentially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911126078.7A CN110729526A (en) | 2019-11-18 | 2019-11-18 | Immersed liquid-cooled battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911126078.7A CN110729526A (en) | 2019-11-18 | 2019-11-18 | Immersed liquid-cooled battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110729526A true CN110729526A (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911126078.7A Pending CN110729526A (en) | 2019-11-18 | 2019-11-18 | Immersed liquid-cooled battery pack |
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| Country | Link |
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| CN (1) | CN110729526A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834696A (en) * | 2020-06-09 | 2020-10-27 | 安徽正熹标王新能源有限公司 | Automobile battery temperature control system |
| CN112002954A (en) * | 2020-07-14 | 2020-11-27 | 安徽汉马锂电科技有限公司 | Liquid immersion cooling type power battery pack |
| CN112886093A (en) * | 2021-01-14 | 2021-06-01 | 哈尔滨工程大学 | Active control type full-immersion liquid cooling power battery thermal management system |
| CN112954980A (en) * | 2021-03-05 | 2021-06-11 | 南京航空航天大学 | Airborne liquid cooling device |
| CN114267898A (en) * | 2021-11-11 | 2022-04-01 | 浙江零跑科技股份有限公司 | Fireproof automobile lithium battery module |
| CN114976382A (en) * | 2022-06-10 | 2022-08-30 | 浙江大学 | Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same |
-
2019
- 2019-11-18 CN CN201911126078.7A patent/CN110729526A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834696A (en) * | 2020-06-09 | 2020-10-27 | 安徽正熹标王新能源有限公司 | Automobile battery temperature control system |
| CN112002954A (en) * | 2020-07-14 | 2020-11-27 | 安徽汉马锂电科技有限公司 | Liquid immersion cooling type power battery pack |
| CN112002954B (en) * | 2020-07-14 | 2022-08-30 | 安徽汉马锂电科技有限公司 | Liquid immersion cooling type power battery pack |
| CN112886093A (en) * | 2021-01-14 | 2021-06-01 | 哈尔滨工程大学 | Active control type full-immersion liquid cooling power battery thermal management system |
| CN112954980A (en) * | 2021-03-05 | 2021-06-11 | 南京航空航天大学 | Airborne liquid cooling device |
| CN112954980B (en) * | 2021-03-05 | 2022-04-29 | 南京航空航天大学 | Airborne liquid cooling device |
| CN114267898A (en) * | 2021-11-11 | 2022-04-01 | 浙江零跑科技股份有限公司 | Fireproof automobile lithium battery module |
| CN114976382A (en) * | 2022-06-10 | 2022-08-30 | 浙江大学 | Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same |
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