CN115411407A - Battery module cooling system and application thereof - Google Patents
Battery module cooling system and application thereof Download PDFInfo
- Publication number
- CN115411407A CN115411407A CN202211197377.1A CN202211197377A CN115411407A CN 115411407 A CN115411407 A CN 115411407A CN 202211197377 A CN202211197377 A CN 202211197377A CN 115411407 A CN115411407 A CN 115411407A
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- CN
- China
- Prior art keywords
- siphon
- battery module
- liquid
- box body
- cooling
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- 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
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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
- H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
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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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a battery module cooling system and application thereof. The cooling system comprises a box body, a plurality of battery modules are arranged in the box body, a siphon groove with a downward opening is formed between every two adjacent battery modules, a siphon liquid discharge pipe corresponding to the siphon groove is arranged in the siphon groove, and the siphon groove and the siphon liquid discharge pipe form a siphon structure; the height of the liquid inlet of the siphon liquid discharge pipe is consistent with that of the battery module; and the top of the box body is provided with a cooling liquid spray head, and the cooling liquid spray head is connected with a liquid inlet pipeline. The siphon principle is designed on the box body for containing the battery module, so that the cooling liquid after heat exchange can be effectively discharged out of the box body in time, the compatibility problem between the cooling liquid and battery parts can be effectively solved, and the parts are prevented from being corroded due to long-time soaking; carry out the fluid infusion with the mode that sprays, increase coolant liquid and battery module's area of contact makes more comprehensive heat transfer of battery module, improves heat exchange efficiency.
Description
Technical field of
The invention particularly relates to a battery module cooling system and application thereof, and belongs to the technical field of battery heat dissipation devices.
Background
The operating temperature of the lithium ion battery seriously affects the operating characteristics of the battery. In a high-temperature environment, the heat transfer performance inside the module is deteriorated, the charging efficiency and the cycle life are significantly reduced, and safety problems such as combustion or explosion can be induced.
For an energy storage power station, the number of internal batteries is huge, chain reaction of peripheral batteries is easily caused after the batteries are out of control due to heat, and a battery system is continuously cooled to effectively control fire. In order to ensure the safety of the battery system, a heat dissipation protection device needs to be arranged in the independent energy storage space to prevent the battery from causing fire due to excessive heat accumulation. The most effective fire prevention cooling mode of prior art route is immersion liquid cooling, and the coolant liquid directly carries out the heat exchange with the battery, realizes the temperature control of battery, makes the battery work at suitable temperature, prolongs the life of battery. When thermal runaway of a battery occurs, thermal spread of the runaway battery can be suppressed. However, the cooling liquid has a considerable problem of compatibility with battery parts, and the battery parts are corroded by long-term immersion, thereby damaging the structure. Meanwhile, the immersed liquid-cooled cooling liquid easily causes heat accumulation, and threatens the service life and the safety performance of the battery.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a cooling system for a battery module.
The invention also provides a method for cooling the battery module by using the cooling system.
The technical scheme of the invention is as follows:
a battery module cooling system comprises a box body, wherein a plurality of battery modules are arranged in the box body, a siphon groove with a downward opening is formed between every two adjacent battery modules, a siphon liquid discharge pipe corresponding to the siphon groove is arranged in the siphon groove, and the siphon groove and the siphon liquid discharge pipe form a siphon structure; the height of the liquid inlet of the siphon liquid discharge pipe is consistent with that of the battery module; and the top of the box body is provided with a cooling liquid spray head, and the cooling liquid spray head is connected with a liquid inlet pipeline.
Preferably, the siphon grooves penetrate through the front wall and the rear wall of the box body to separate the adjacent battery modules; correspondingly, the siphon liquid discharge pipe penetrates through the front wall and the rear wall of the box body and is connected with the front wall and the rear wall of the box body in a sealing mode.
A method for cooling a battery module by using the cooling system comprises the following steps:
after the charging and discharging process of the battery module starts, the spray head is opened to spray and cool the battery module, sprayed cooling liquid is continuously accumulated in the box body, fully contacts with the battery module and absorbs heat generated by the module, when the liquid level of the cooling liquid reaches the height of the liquid inlet of the siphon liquid discharge pipe, siphon occurs, and at the moment, the cooling liquid which is subjected to heat exchange with the battery module is quickly discharged through the siphon liquid discharge pipe; simultaneously, new coolant liquid constantly mends through the mode of spraying to this circulation realizes the cooling to battery module.
The beneficial effects of the invention are as follows:
according to the cooling system for the battery module, on one hand, the battery module is continuously cooled in a spraying mode, so that thermal runaway is prevented; on one hand, a siphon type independent space is arranged for each module, sprayed cooling liquid is collected and immediately discharged when the cooling liquid submerges the battery modules, and the cooling liquid is prevented from being in contact with the battery modules for a long time;
the siphon principle is designed on the box body for containing the battery module, so that the cooling liquid after heat exchange can be effectively discharged out of the box body in time, the heat accumulation is avoided, the problem of compatibility between the cooling liquid and battery parts can be effectively solved, and the parts are prevented from being corroded due to long-time soaking; liquid is replenished in a spraying mode, so that the contact area between the cooling liquid and the battery module can be increased, the battery module can exchange heat more comprehensively, and the heat exchange efficiency is improved;
the design of siphon device not only plays the effect of keeping apart two modules, can also effectively prevent the long-time contact of coolant liquid and battery part.
Drawings
Fig. 1 is a schematic structural view of a cooling system for a battery module;
wherein, 1, siphon groove; 2. a siphon drain pipe; 3. a battery module; 4. a shower head; 5. a liquid inlet pipe.
Detailed Description
Some embodiments of the invention are described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1.
A battery module cooling system comprises a box body, wherein two battery modules 3 are arranged in the box body, a siphon groove 1 with a downward opening is formed between every two adjacent battery modules 3, a siphon liquid discharge pipe 2 corresponding to the siphon groove 1 is arranged in the siphon groove 1, and the siphon groove 1 and the siphon liquid discharge pipe 2 form a siphon structure; the height of the liquid inlet of the siphon liquid discharge pipe 2 is consistent with that of the battery module 3; the top of the box body is provided with a cooling liquid spray header 4 which is connected with a liquid inlet pipeline 5.
Example 2
In the cooling system for battery modules according to embodiment 1, further, siphon grooves 1 penetrate through the front and rear walls of the case to separate the adjacent battery modules 3; accordingly, siphon drain pipe 2 penetrates through and is connected with the front and rear walls of the box body in a sealing manner. The advantage of this design is, can also keep apart adjacent battery module when realizing siphon structure, plays the effect of safety isolation.
Example 3
A method for cooling a battery module using the cooling system of embodiment 1 or 2, comprising the steps of:
after the charging and discharging process of the battery module 3 is started, the spray head 4 is opened to spray and cool the battery module 3, the sprayed cooling liquid is continuously accumulated in the box body, fully contacts with the battery module 3 and absorbs heat generated by the module 3, when the liquid level of the cooling liquid reaches the height of the liquid inlet of the siphon liquid discharge pipe 2, siphon occurs, and at the moment, the cooling liquid which is subjected to heat exchange with the battery module 3 is quickly discharged through the siphon liquid discharge pipe 2; simultaneously, new coolant liquid constantly mends through the mode of spraying to this circulation realizes the cooling to battery module 3.
Claims (3)
1. A battery module cooling system is characterized by comprising a box body, wherein a plurality of battery modules are arranged in the box body, a siphon groove with a downward opening is arranged between every two adjacent battery modules, a siphon liquid discharge pipe corresponding to the siphon groove is arranged in the siphon groove, and the siphon groove and the siphon liquid discharge pipe form a siphon structure; the height of the liquid inlet of the siphon liquid discharge pipe is consistent with that of the battery module; and the top of the box body is provided with a cooling liquid spray head, and the cooling liquid spray head is connected with a liquid inlet pipeline.
2. The battery module cooling system according to claim 1, wherein siphon grooves penetrate through the front and rear walls of the case to separate the adjacent battery modules; correspondingly, the siphon liquid discharge pipe penetrates through the front wall and the rear wall of the box body and is connected with the front wall and the rear wall of the box body in a sealing mode.
3. A method for cooling a battery module using the cooling system of claim 1 or 2, comprising the steps of:
after the charging and discharging process of the battery module starts, the spray head is opened to spray and cool the battery module, sprayed cooling liquid is continuously accumulated in the box body, fully contacts with the battery module and absorbs heat generated by the module, when the liquid level of the cooling liquid reaches the height of the liquid inlet of the siphon liquid discharge pipe, siphon occurs, and at the moment, the cooling liquid which is subjected to heat exchange with the battery module is quickly discharged through the siphon liquid discharge pipe; simultaneously, new coolant liquid constantly mends through the mode of spraying to this circulation realizes the cooling to battery module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211197377.1A CN115411407A (en) | 2022-09-29 | 2022-09-29 | Battery module cooling system and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211197377.1A CN115411407A (en) | 2022-09-29 | 2022-09-29 | Battery module cooling system and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115411407A true CN115411407A (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211197377.1A Pending CN115411407A (en) | 2022-09-29 | 2022-09-29 | Battery module cooling system and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116435645A (en) * | 2023-02-21 | 2023-07-14 | 珠海科创储能科技有限公司 | Liquid level leveling system and method in immersed liquid cooling energy storage cabinet |
-
2022
- 2022-09-29 CN CN202211197377.1A patent/CN115411407A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116435645A (en) * | 2023-02-21 | 2023-07-14 | 珠海科创储能科技有限公司 | Liquid level leveling system and method in immersed liquid cooling energy storage cabinet |
| CN116435645B (en) * | 2023-02-21 | 2024-01-23 | 珠海科创储能科技有限公司 | Liquid level leveling system and method in immersed liquid cooling energy storage cabinet |
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