CN111370808A - Heat radiation structure of power battery module - Google Patents
Heat radiation structure of power battery module Download PDFInfo
- Publication number
- CN111370808A CN111370808A CN202010218033.9A CN202010218033A CN111370808A CN 111370808 A CN111370808 A CN 111370808A CN 202010218033 A CN202010218033 A CN 202010218033A CN 111370808 A CN111370808 A CN 111370808A
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- Prior art keywords
- module
- heat dissipation
- power battery
- heat
- battery module
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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
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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
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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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
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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
- H01M10/6567—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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a heat dissipation structure of a power battery module, which comprises a heat dissipation module, wherein the power battery module is formed by electrically connecting a plurality of single power batteries in series and parallel through a connection module, the connection module is a good heat conductor, the heat dissipation module is in heat conduction connection with the connection module, a cooling liquid channel is arranged in the heat dissipation module, the cooling liquid channels between adjacent heat dissipation modules are connected together by adopting an insulation pipeline, and insulation cooling liquid is arranged in the cooling liquid channel. Therefore, the battery provided by the invention can cool the interior of the battery by cooling the connecting module, so that the uniformity of cooling in the battery core is realized.
Description
Technical Field
The invention relates to the field of lithium ion battery module assembly, in particular to a heat dissipation structure of a power battery module.
Background
With the gradual maturity of the new energy automobile market, the application fields of new energy automobiles are more and more.
The battery is used as a core component of a new energy automobile, a phenomenon of generating a large amount of heat in the charging and discharging processes exists, the performance of the lithium ion battery is most influenced by the temperature as the lithium ion battery is used as a chemical battery, the normal use temperature range of the lithium ion battery is 10-45 ℃, and the technical indexes are reduced at 0-10 ℃ and 45-55 ℃ and the like. Therefore, the high-temperature heat dissipation and the low-temperature heating inside the battery box body become the core work of each battery manufacturer.
There are generally two ways to cool and dissipate heat at present: air cooling and liquid cooling. Because the lithium ion battery pack is generally placed at the bottom of an automobile, the protection level of the lithium ion battery pack is generally required to be not lower than IP 67. Because the air tightness of air cooling is not high, the new energy automobile generally adopts liquid cooling.
The liquid cooling system has the advantages that in the lithium ion power battery system, the heat is taken away from the surface of the battery core in multiple modes, the action ranges are different, and the liquid cooling system can be divided into battery core-level liquid cooling plate type heat dissipation integrated inside the module and module-level liquid cooling plate type heat dissipation designed outside the module. The heat dissipation method of the liquid cooling plate at the electric core level is to place an integrated liquid cooling pipeline between two electric cores, as shown in fig. 3, the cooling plate 4 is placed between two single batteries 1-1, and heat is transferred through the surfaces of the single batteries 1-1, so that the heat dissipation of the batteries is realized. However, the battery has poor thermal conductivity, and a plastic film is coated on the surface of the battery core, so that the temperature difference exists between the inside and the surface of the battery core. Therefore, the conductivity of the heat dissipation method is poor, and the temperature difference phenomenon exists inside the battery cell, which affects the performance of the battery system.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a heat dissipation structure of a power battery module is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a heat radiation structure of power battery module, its characterized in that includes heat radiation module, power battery module passes through a plurality of monomer power battery to connect the module electrical property series-parallel to constitute, connection module is hot good conductor, heat radiation module with connection module heat conduction is connected.
Compared with the prior art, the invention has the following technical effects:
the connecting module is in heat conduction connection with the heat dissipation module, the connecting module is directly connected with current collectors (positive and negative electrodes) of the power battery, the connecting module is generally made of materials with both excellent electric conductivity and excellent heat conductivity, such as copper, so that the connecting module is equivalent to the fact that the heat dissipation module is directly in heat conduction connection with the current collectors of the power battery, the current collectors in the battery can be cooled through cooling of the connecting module, and therefore uniformity of cooling inside the battery core is achieved.
The positive current collector of the power battery is welded with each positive electrode in the power battery, so that the positive current collector is cooled, namely each positive pole piece in the single battery is cooled, and the negative current collector is also cooled; and in the process of charging and discharging the battery module, the region with the highest temperature is the current collector, so that the current collector is directly cooled, which is a better scheme for cooling the battery.
On the basis of the technical scheme, the scheme can be further improved as follows:
furthermore, a cooling liquid channel is arranged in the heat dissipation module.
The beneficial effect who adopts above-mentioned further scheme is, with the heat dissipation pipeline integration in the linking module, can realize the more quick exchange of heat with the help of the flow of coolant liquid.
Furthermore, the heat dissipation modules are insulated from the connection modules, cooling liquid channels between adjacent heat dissipation modules are connected together by pipelines, and cooling liquid is arranged in the cooling liquid channels.
The cooling liquid channels in the heat dissipation modules of the anode and the cathode of the power battery can be connected in series to form a whole, and heat management is carried out at the same time. Because the heat dissipation module is insulated from the connection module, the series-parallel connection relation of the connection module to the single batteries is not influenced.
Furthermore, the heat dissipation modules are electrically connected with the connecting module, cooling liquid channels between adjacent heat dissipation modules are connected together by adopting insulating pipelines, and insulating cooling liquid is arranged in the cooling liquid channels.
The heat dissipation module has the advantages that the heat dissipation module is made of metal and other conductive materials, and is convenient to manufacture and easy to obtain materials. The cooling liquid channels of the plurality of relatively independent heat dissipation modules are connected through the insulating pipelines, so that the electric connection among the connection modules is not influenced, and the overall heat management of the battery pack can be realized.
Furthermore, a cooling liquid heat exchange device is further arranged and connected with the cooling liquid channel, and the cooling liquid heat exchange device is used for enabling the cooling liquid to realize heat exchange more quickly.
Adopt above-mentioned further scheme's beneficial effect be, can improve the radiating efficiency of group battery.
Furthermore, the heat dissipation module and the connection module are designed in an integrated manner, that is, the heat dissipation module is also a connection module, and can be made of different materials and then fixedly connected together, or can be made of the same material by one-step processing, and has a connection function and a heat dissipation function.
The heat dissipation module is a connection module for realizing series-parallel connection of the batteries and a heat dissipation component for realizing a heat dissipation function, achieves two purposes at one stroke, and saves space.
Further, the cooling liquid is a mixed liquid of water and glycol or heat-conducting silicone oil.
The further scheme has the beneficial effects of excellent insulating property, good heat conduction effect and easy material taking.
Furthermore, the connecting module with the built-in cooling pipeline is made of materials with excellent electric and heat conducting capabilities, such as copper bars, aluminum materials or copper nickel plating.
The beneficial effect of adopting above-mentioned further scheme is that, the material selection is various, easily batch production.
Drawings
Fig. 1 is a schematic view of a heat dissipation structure of a power battery module according to the present invention;
fig. 2 is a schematic view of an internal coolant channel in the heat dissipation structure of the power battery module according to the present invention;
fig. 3 is a schematic structural diagram of a conventional power battery liquid cooling heat dissipation system.
In the drawings, the parts names represented by the respective reference numerals are listed as follows:
1. a battery module; 1-1, a single battery; 2. a connection module; 2-1, a cooling liquid channel; 3. a connecting hose; 4. a heat sink.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, the examples of which are set forth to illustrate the invention and are not intended to limit the scope of the invention.
Referring to fig. 1, which is a schematic diagram of a heat dissipation structure of a power battery of the present invention, the heat dissipation structure includes a battery module 1, a connection module 2, and a connection hose 3, wherein a plurality of single power batteries are made of copper through the connection module 2, such that the battery module 1 is formed by electrically connecting the single power batteries in series and parallel, and as shown in fig. 2, a coolant pipe 2-1 is disposed inside the connection module 2 to achieve a function of the heat dissipation module, the coolant pipes 2-1 between adjacent connection modules 2 are connected by the insulated connection hose 3 to form an integral coolant channel, and the channel is filled with insulated heat-conducting silicone oil, and heat in the connection module is taken away by driving the flow of the coolant. The cooling liquid can select a compressor refrigeration machine or a circulating air cooling machine to exchange heat outside the module.
The battery module is an aluminum shell lithium ion power battery module and is applied to new energy automobiles and energy storage markets. The aluminum shell lithium ion power battery module is square in appearance and moderate in thickness, and the scheme is very convenient to implement.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a heat radiation structure of power battery module, its characterized in that includes heat radiation module, power battery module passes through a plurality of monomer power battery to connect the module electrical property series-parallel to constitute, connection module is hot good conductor, heat radiation module with connection module heat conduction is connected.
2. The heat dissipation structure of a power battery module as claimed in claim 1, wherein a coolant channel is provided in the heat dissipation module.
3. The heat dissipation structure of a power battery module as claimed in claim 2, wherein the heat dissipation modules are insulated from the connection modules, the cooling fluid channels between adjacent heat dissipation modules are connected together by using a pipeline, and a cooling fluid is disposed in the cooling fluid channels.
4. The heat dissipation structure of a power battery module as claimed in claim 2, wherein the heat dissipation modules are electrically connected to the connection module, the cooling fluid channels between adjacent heat dissipation modules are connected together by using an insulating pipeline, and an insulating cooling fluid is disposed in the cooling fluid channels.
5. The heat dissipation structure of the power battery module as claimed in claim 3 or 4, wherein a coolant heat exchange device is further provided, and the coolant heat exchange device is connected with the coolant channel.
6. The heat dissipation structure of power battery module as claimed in claim 5, wherein the heat dissipation module and the connection module are designed as a single body.
7. The heat dissipation structure of the power battery module as claimed in any one of claims 3, 4 and 6, wherein the coolant is a mixture of water and glycol or heat-conducting silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010218033.9A CN111370808A (en) | 2020-03-25 | 2020-03-25 | Heat radiation structure of power battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010218033.9A CN111370808A (en) | 2020-03-25 | 2020-03-25 | Heat radiation structure of power battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111370808A true CN111370808A (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010218033.9A Pending CN111370808A (en) | 2020-03-25 | 2020-03-25 | Heat radiation structure of power battery module |
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| CN (1) | CN111370808A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129527A (en) * | 2016-08-11 | 2016-11-16 | 北京交通大学 | A kind of Li-ion batteries piles lug liquid cooling apparatus cold based on liquid |
| CN209249563U (en) * | 2018-12-21 | 2019-08-13 | 江苏时代新能源科技有限公司 | A kind of electrode connecting piece and battery modules |
-
2020
- 2020-03-25 CN CN202010218033.9A patent/CN111370808A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129527A (en) * | 2016-08-11 | 2016-11-16 | 北京交通大学 | A kind of Li-ion batteries piles lug liquid cooling apparatus cold based on liquid |
| CN209249563U (en) * | 2018-12-21 | 2019-08-13 | 江苏时代新能源科技有限公司 | A kind of electrode connecting piece and battery modules |
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