CN110571497A - metal shell power battery pole column heat dissipation structure and forming method thereof - Google Patents
metal shell power battery pole column heat dissipation structure and forming method thereof Download PDFInfo
- Publication number
- CN110571497A CN110571497A CN201910890994.1A CN201910890994A CN110571497A CN 110571497 A CN110571497 A CN 110571497A CN 201910890994 A CN201910890994 A CN 201910890994A CN 110571497 A CN110571497 A CN 110571497A
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- China
- Prior art keywords
- heat dissipation
- dissipation structure
- power battery
- battery
- pole
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- Pending
Links
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 33
- 239000002184 metal Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 10
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000000565 sealant Substances 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 238000004382 potting Methods 0.000 claims description 24
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 229910052582 BN Inorganic materials 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000020169 heat generation Effects 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
- 239000000615 nonconductor Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
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
- H01M10/60—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
-
- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- 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
-
- 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
- H01M10/6553—Terminals or leads
-
- 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
-
- 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
Landscapes
- 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)
- Battery Mounting, Suspending (AREA)
Abstract
the invention discloses a heat dissipation structure for a power battery pole with a square metal shell, wherein the power battery is provided with a metal shell (1) and a sealing cover (2), the sealing cover (2) is provided with a positive pole (3) and a negative pole (4), the positive pole (3) and a metal substrate of the sealing cover (2) are connected into a whole, and the negative pole (4) is arranged on the metal substrate of the sealing cover (2) through an insulation structure; one side to four sides of the heat dissipation structure around the negative pole column (4) are provided with a filling and sealing cavity (6), and the filling and sealing cavity (6) is filled and sealed by adopting insulating heat-conducting pouring sealant. By adopting the technical scheme, the heat-conducting insulating pouring sealant is used to form a heat dissipation structure of the square metal shell pole, so that the temperature rise of the battery core pole is reduced, and the discharge power of the battery core is widened; the temperature difference between the battery cores is reduced, the service life of the battery is prolonged, the performance of the battery pack is improved, the heat dissipation requirement of a battery system is reduced, and the cost is reduced.
Description
Technical Field
the invention belongs to the technical field of hybrid electric vehicle power systems, relates to a power battery structure, and particularly relates to a heat dissipation structure of a power battery pole with a square metal shell. In addition, the invention also relates to a forming method of the heat dissipation structure.
Background
The plug-in hybrid electric vehicle generally adopts a high-voltage direct-current battery system for power supply, and during operation, charging and discharging with large multiplying power can be performed frequently. Due to technical limitations, the internal resistance of the battery cannot be made too low, and the amount of heat generation is very large. Especially, the welding position of the battery pole piece and the pole ear or the pole column, and the welding position of the pole column and the bus bar have more serious heating of the interface resistance due to the limited welding area.
In the prior art, a power module of a soft package battery is formed by stacking and assembling a bracket and aluminum sheets, a heat dissipation aluminum sheet is clamped between two battery cores, and the heat dissipation aluminum sheet is in contact with a liquid cooling plate of a liquid cooling system for heat transfer; the square metal shell battery is contacted with the liquid cooling plate to dissipate heat by the metal shell. In the cooling design that the battery core pole is not in contact with the cooling liquid, the battery core pole is mainly radiated by the conductive connecting body. The place with the largest temperature difference among the battery cores is often the position of the battery pole, and the position with the highest temperature of the battery cores is also often the position of the pole.
Such battery core design and battery system heat dissipation design cause the damage to the battery easily, also do not do benefit to the performance of battery performance, can influence the whole car performance even.
disclosure of Invention
the invention provides a heat dissipation structure of a metal shell power battery pole, and aims to improve the reliability and power performance of a battery system.
In order to achieve the purpose, the invention adopts the technical scheme that:
according to the metal shell power battery pole column heat dissipation structure, a power battery is provided with a metal shell and a sealing cover, a positive pole column and a negative pole column are arranged on the sealing cover, the positive pole column and the sealing cover metal substrate are connected into a whole, and the negative pole column is installed on the sealing cover metal substrate through an insulation structure; one side to four sides of the heat dissipation structure around the negative pole column are provided with a filling and sealing cavity, and the filling and sealing cavity is filled and sealed by insulating heat conduction pouring sealant.
The power battery adopts a square metal shell.
The insulating heat-conducting pouring sealant is a high-molecular polymer matrix and heat-conducting fillers.
The insulating heat-conducting pouring sealant is a composite material of silicon carbide and boron nitride.
In order to achieve the same purpose as the technical scheme, the invention also provides a forming method of the metal shell power battery pole heat dissipation structure, and the technical scheme is that the method comprises the following steps:
and erecting the battery core, forming a potting cavity by using a potting tool, pouring the prepared potting adhesive into the potting cavity, and removing the potting tool after the potting adhesive is cured to form the power battery pole column heat dissipation structure.
By adopting the technical scheme, the heat-conducting insulating pouring sealant is used to form a heat dissipation structure of the square metal shell pole, so that the temperature rise of the battery core pole is reduced, and the discharge power of the battery core is widened; the temperature difference between the battery cores is reduced, the service life of the battery is prolonged, the performance of the battery pack is improved, the heat dissipation requirement of a battery system is reduced, and the cost is reduced.
Drawings
The contents of the drawings and the reference numbers in the drawings are briefly described as follows:
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of a heat dissipation structure of a battery post according to the present invention;
Fig. 3 is a schematic view of a heat dissipation structure of a battery post according to the present invention (showing the length direction of the potting structure).
Labeled as:
1. The battery comprises a metal shell, 2, a sealing cover, 3, a positive pole column, 4, a negative pole column, 5, a battery core, 6, a filling and sealing cavity, 7 and a decompression exhaust valve.
Detailed Description
the following detailed description of the embodiments of the present invention will be given in order to provide those skilled in the art with a more complete, accurate and thorough understanding of the inventive concept and technical solutions of the present invention.
The structure of the invention is a metal-shell power battery pole heat dissipation structure as shown in fig. 1 to fig. 3, the power battery is provided with a metal shell 1 and a sealing cover 2, the sealing cover 2 is provided with a positive pole 3 and a negative pole 4, wherein the positive pole 3 and the sealing cover 2 are connected into a whole through a metal substrate, and the negative pole 4 is installed on the metal substrate of the sealing cover 2 through an insulation structure.
The invention relates to a heat dissipation structure of a heat-conducting insulating pouring sealant applied to a square metal shell power battery, in particular to a negative electrode heat dissipation structure of a VDA2714891 square aluminum shell power battery.
In order to overcome the problems and defects in the prior art and achieve the purpose of improving the reliability and the power performance of a battery system, the invention adopts the following technical scheme:
As shown in fig. 2 and 3, the metal-case power battery pole heat dissipation structure of the present invention has a potting cavity 6 disposed from one side to four sides around the negative pole 4, and the potting cavity 6 is potted with an insulating and heat-conducting potting adhesive.
The heat dissipation structure of the power battery pole with the square metal shell is encapsulated from one side to four sides around the negative pole 4 by using insulating heat-conducting embedding glue as shown in fig. 2.
Since the structurally hard organic material is an electrical insulator and has a low thermal conductivity, the negative electrode tab 4 is likely to generate a high temperature. The invention uses heat-conducting insulating pouring sealant to form a heat dissipation structure of the square metal shell pole. The heat dissipation structure for the power battery pole with the square metal shell reduces the temperature difference between the pole and the inside of the battery core, and improves the reliability and the power performance of a battery system. Specifically, the beneficial effects of the invention are as follows:
1. The temperature rise of the battery core pole is reduced, and the discharge power of the battery core is widened;
2. The temperature difference among the battery cores is reduced, the service life of the battery is prolonged, and the performance of the battery pack is improved;
3. The heat dissipation requirement of the battery system is reduced, and the cost is reduced.
The power battery adopts a square metal shell.
The insulating heat-conducting pouring sealant is a high-molecular polymer matrix and heat-conducting fillers.
The insulating heat-conducting pouring sealant is a composite material of silicon carbide and boron nitride.
The heat-conducting pouring sealant is formed by compounding a high-molecular polymer matrix and heat-conducting fillers such as silicon carbide, boron nitride and the like.
The battery core is encapsulated in the thickness direction of the battery core 5 and cannot exceed the plane of the square power battery shell; the height of the pole cannot be exceeded in the height direction, and the decompression exhaust valve 7 cannot be covered in the longitudinal direction, so that the decompression exhaust valve 7 cannot interfere with the structure of the battery module.
As shown in fig. 3, a potting structure having the same height and width as the negative electrode column 4 was designed, and the dimension in the longitudinal direction of the potting structure (i.e., the direction indicated by the broken-line arrow in fig. 3) was 10 mm.
In order to achieve the same purpose as the technical scheme, the invention also provides a forming method of the metal shell power battery pole heat dissipation structure, and the technical scheme is that the method comprises the following steps:
Erecting the battery core 5, forming a potting cavity 6 by using a potting tool, then pouring the prepared potting adhesive into the potting cavity 6, and after the potting adhesive is cured, removing the potting tool to form the power battery pole column heat dissipation structure.
the invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (5)
1. A metal casing power battery pole column heat dissipation structure is characterized in that a metal casing (1) and a sealing cover (2) are arranged on a power battery, a positive pole column (3) and a negative pole column (4) are arranged on the sealing cover (2), the positive pole column (3) and a metal substrate of the sealing cover (2) are connected into a whole, and the negative pole column (4) is installed on the metal substrate of the sealing cover (2) through an insulation structure; the method is characterized in that: one side to four sides of the heat dissipation structure around the negative pole column (4) are provided with a filling and sealing cavity (6), and the filling and sealing cavity (6) is filled and sealed by adopting insulating heat-conducting pouring sealant.
2. The metal-enclosed power battery pole heat dissipation structure of claim 1, characterized in that: the power battery adopts a square metal shell.
3. The metal-enclosed power battery pole heat dissipation structure of claim 1, characterized in that: the insulating heat-conducting pouring sealant is a high-molecular polymer matrix and heat-conducting fillers.
4. The metal-enclosed power battery pole heat dissipation structure of claim 1, characterized in that: the insulating heat-conducting pouring sealant is a composite material of silicon carbide and boron nitride.
5. The forming method of the metal-shell power battery pole heat dissipation structure as defined in any one of claims 1 to 4, wherein: the method comprises the following steps: the battery core (5) is erected, a potting tool is used to form a potting cavity (6), then the prepared potting adhesive is poured into the potting cavity (6), and after the potting adhesive is solidified, the potting tool is removed, so that the power battery pole column heat dissipation structure is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890994.1A CN110571497A (en) | 2019-09-20 | 2019-09-20 | metal shell power battery pole column heat dissipation structure and forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890994.1A CN110571497A (en) | 2019-09-20 | 2019-09-20 | metal shell power battery pole column heat dissipation structure and forming method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110571497A true CN110571497A (en) | 2019-12-13 |
Family
ID=68781458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910890994.1A Pending CN110571497A (en) | 2019-09-20 | 2019-09-20 | metal shell power battery pole column heat dissipation structure and forming method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110571497A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114597540A (en) * | 2022-03-11 | 2022-06-07 | 东风汽车集团股份有限公司 | Battery module and vehicle |
| CN115692967A (en) * | 2022-11-22 | 2023-02-03 | 江苏正力新能电池技术有限公司 | Battery with a battery cell |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115692967A (en) * | 2022-11-22 | 2023-02-03 | 江苏正力新能电池技术有限公司 | Battery with a battery cell |
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