CN218300175U - Copper bar structure, wire harness isolation assembly and battery module - Google Patents
Copper bar structure, wire harness isolation assembly and battery module Download PDFInfo
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- CN218300175U CN218300175U CN202221820245.5U CN202221820245U CN218300175U CN 218300175 U CN218300175 U CN 218300175U CN 202221820245 U CN202221820245 U CN 202221820245U CN 218300175 U CN218300175 U CN 218300175U
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- copper bar
- bar body
- fuse
- fusing
- battery
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 123
- 239000010949 copper Substances 0.000 title claims abstract description 123
- 238000002955 isolation Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 239000000758 substrate Substances 0.000 claims description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 239000010951 brass Substances 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 2
- 239000000178 monomer Substances 0.000 abstract description 10
- 230000017525 heat dissipation Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 241000784732 Lycaena phlaeas Species 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The application provides copper bar structure, pencil isolation assembly and battery module relates to power battery technical field. The copper bar structure comprises: the copper bar mechanism is provided with a first copper bar body and a second copper bar body, and the first copper bar body and the second copper bar body are arranged at intervals; and the fusing mechanism is configured between the first copper bar body and the second copper bar body and is used for conducting the first copper bar body and the second copper bar body. Copper bar structure is used for being connected with battery monomer, wherein copper bar mechanism has first copper bar body and the second copper bar body that the interval set up, fusing mechanism connects between first copper bar body and second copper bar body, when battery monomer takes place the thermal runaway and when the temperature reaches critical condition, fusing mechanism in connecting the free copper bar structure of adjacent battery can carry out automatic fusing, cut off heat-conduction route, thereby avoid adjacent battery monomer to be heated and initiate the thermal runaway, improve the reliability and the security of product.
Description
Technical Field
The application relates to the technical field of power batteries, particularly, relate to a copper bar structure, pencil isolation assembly and battery module.
Background
Energy conservation and emission reduction are the key of sustainable development of the automobile industry, the electric vehicle becomes an important component of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection, and for the electric vehicle, the battery technology is an important factor related to the development of the electric vehicle.
In the development of relevant battery technology, battery safety still is the pain point of trade, when the battery takes place the thermal runaway, connects the unable high temperature fusing function that realizes of copper bar between the battery for adjacent battery is inside to be heated, and the production gas such as the decomposition of the flourishing electrolyte of heat arouses secondary thermal runaway, aggravates the thermal runaway outbreak of module.
SUMMERY OF THE UTILITY MODEL
The utility model provides a copper bar structure, pencil isolation assembly and battery module, when taking place the thermal runaway, the copper bar structure can independently fuse, improves the reliability and the security of product.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect, the present application provides a copper busbar structure comprising: the copper bar mechanism is provided with a first copper bar body and a second copper bar body, and the first copper bar body and the second copper bar body are arranged at intervals; and the fusing mechanism is configured between the first copper bar body and the second copper bar body and is used for conducting the first copper bar body and the second copper bar body.
At the in-process of above-mentioned realization, the copper bar structure is used for being connected with battery monomer, wherein the copper bar mechanism has first copper bar body and the second copper bar body that the interval set up, fuse-link mechanism connects between first copper bar body and second copper bar body, when battery monomer takes place the thermal runaway and the temperature reaches critical condition, fuse-link mechanism in connecting the free copper bar structure of adjacent battery can carry out automatic fusing, cut off the heat-conduction route, thereby avoid adjacent battery monomer to be heated and initiate the thermal runaway, improve the reliability and the security of product.
In some embodiments, the fuse mechanism includes a first fuse connected to the first copper bar body and the second copper bar body, respectively, and the first fuse is disposed to be hollow to form a double-layer structure.
At the in-process of above-mentioned realization, first fuse-link sets to cavity to form bilayer structure, be favorable to fusing and heat dissipation, and relatively lower to with integrated technology requirement, improve product reliability.
In some embodiments, the first fuse link is provided with a plurality of first dividing grooves distributed at intervals to form a plurality of first fusing parts, so that the first fusing parts can be fused when the thermal runaway of the single battery occurs while the heat dissipation of the first fuse link is facilitated, and the safety performance of the product is improved.
In some embodiments, the fuse mechanism further includes a second fuse disposed at an interval from the first fuse, and the second fuse is connected to the first copper bar body and the second copper bar body, respectively.
At the in-process of above-mentioned realization, first fuse-link carries out the interval with the second fuse-link and sets up, makes things convenient for first fuse-link and second fuse-link to be connected with copper bar mechanism respectively, is favorable to integratively, improves the security of product, reduces the thermal runaway incidence of secondary, improves user experience.
In some embodiments, the second fuse element is hollow to form a double-layer structure, which is beneficial to fusing and heat dissipation, and has relatively low requirements on integration technology, thereby improving the reliability of the product.
In some embodiments, the second fuse link is provided with a plurality of second dividing grooves distributed at intervals to form a plurality of second fusing parts, so that the second fusing parts can be fused when the thermal runaway of the single battery occurs while the heat dissipation of the second fuse link is facilitated, and the safety performance of the product is improved.
In some embodiments, the thickness of the fusing mechanism is not greater than that of the copper bar mechanism, so that fusing of the fusing mechanism is facilitated, and thermal runaway caused by heating of adjacent battery cells is avoided.
In a second aspect, the present application also provides a wire harness isolation assembly, including: hot-pressing the film substrate; and a copper bar structure according to any one of the above, the copper bar structure being fixed to the hot-pressed film substrate.
In a third aspect, the present application further provides a battery module, including: a plurality of battery cells configured; and the wiring harness isolation assembly is characterized in that the copper bar structure of the wiring harness isolation assembly is connected with the battery cell so as to be used for acquiring the information of the battery cell.
The battery module provided by the embodiment of the third aspect of the present application includes the wire harness isolation assembly described in the technical solution of the second aspect, so that all technical effects of the above embodiments are achieved, and details are not repeated herein.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for a user of ordinary skill in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a copper bar structure disclosed in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a fusing mechanism of a copper bar structure disclosed in an embodiment of the present application.
Reference numerals
100. A copper bar structure; 101. a copper bar mechanism; 1011. a first copper bar body; 1012. a second copper bar body; 102. a fusing mechanism; 1021. a first fuse; 10211. a first dividing groove; 10212. a first fusing part; 1022. a second fuse; 10221. a second dividing groove; 10222. and a second fusing part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a user of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is noted that the terms "first", "second", "third", and the like are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case to a user of ordinary skill in the art.
Examples
At present, on the basis of the consideration of technology, process maturity and processing cost, domestic and international mainstream new energy automobiles adopt a scheme based on hard copper bars to carry out electric connection between the electric cores in the module, and the common copper bar structure has the following advantages: (1) The technical maturity is high, the material is aluminum alloy, and the structure is basically selected at home and abroad; and (2) the process is simple and reliable: the copper bar is formed by punching, and is relatively mature and reliable.
The inventor finds that the electrical performance of the common copper bar is judged and selected by integrating the characteristic conditions of the battery pack and the module, performing simulation calculation, performing bench verification and the like in the design process, and when the structural design is frozen, the copper bar can meet the electrical performance (high voltage resistance, current resistance and insulation) of the module, but high-temperature fusing cannot be realized. When thermal runaway appeared in certain electric core in certain module, the fuse of whole package had not reached fusing boundary condition yet this moment, and the copper bar of electric core is still being connected between in the module, and the electric core that takes place thermal runaway passes through the copper bar and conducts high temperature to adjacent electric core, and adjacent electric core is inside to be heated, takes place production gas such as electrolyte decomposition, arouses secondary thermal runaway, aggravates module thermal runaway outbreak.
In view of this, as shown in fig. 1, in a first aspect, the present application provides a copper busbar structure 100, where the copper busbar structure 100 is used for connecting with a battery cell, and the copper busbar structure 100 includes: the fuse mechanism 102 is connected to the copper bar mechanism 101, the fuse mechanism 102 has good conductivity and a low melting point, and can reach a fusing critical point of the fuse mechanism 102 when a single battery cell is in thermal runaway, and the fuse mechanism 102 can be automatically fused, so that conduction of the copper bar mechanism 101 is cut off, and thermal runaway and the like caused by heating of adjacent single batteries are avoided.
Specifically, the copper bar mechanism 101 includes a first copper bar body 1011 and a second copper bar body 1012, wherein the first copper bar body 1011 and the second copper bar body 1012 are disposed at an interval; a fusing mechanism 102 disposed between the first copper bar body 1011 and the second copper bar body 1012 for conducting the first copper bar body 1011 and the second copper bar body 1012.
For example, the first copper bar body 1011 and the second copper bar body 1012 may be configured to have the same structure and form, the fusing mechanism 102 may be integrated between the first copper bar body 1011 and the second copper bar body 1012 by integral molding or welding, so as to form conduction between the first copper bar body 1011 and the second copper bar body 1012, the melting point of the fusing mechanism 102 is greater than that of the copper bar mechanism 101, and in order to ensure that the fusing mechanism 102 has good conductivity and low melting point, the fusing mechanism 102 is generally made of a high-temperature fusing material.
In the process of the above-mentioned realization, the copper bar structure 100 is used for being connected with the battery monomer, wherein the copper bar mechanism 101 has first copper bar body 1011 and second copper bar body 1012 that the interval set up, the fuse mechanism 102 is connected between first copper bar body 1011 and second copper bar body 1012, when the battery monomer takes place the thermal runaway and the temperature reaches critical condition, the fuse mechanism 102 among the copper bar structure 100 of connecting adjacent battery monomer can carry out automatic fusing, cut off the heat conduction route, thereby avoid adjacent battery monomer to be heated and initiate the thermal runaway, improve reliability and the security of product.
As shown in fig. 2, the fuse mechanism 102 includes a first fuse 1021, the first fuse 1021 is connected to the first copper bar body 1011 and the second copper bar body 1012, respectively, and the first fuse 1021 is hollow to form a double-layer structure. For example, the first fuse 1021 may be made of a high-temperature fuse material such as brass, red copper, aluminum plate, silver, lead-tin alloy, or pure tin sheet, and the first fuse 1021 has a double-layer structure that is distributed vertically (i.e., distributed along the thickness direction of the copper bar mechanism 101).
In the process of the implementation, the first fuse part 1021 is hollow, so that a double-layer structure is formed, fusing and heat dissipation are facilitated, the requirement on an integration technology is relatively low, and the reliability of a product is improved.
In some embodiments, the first fuse element 1021 is configured with a plurality of first dividing grooves 10211 distributed at intervals to form a plurality of first fusing parts 10212, which is beneficial to heat dissipation of the first fuse element 1021, and is also beneficial to fusing the first fusing parts 10212 when a battery cell is out of control due to thermal runaway, thereby improving the safety performance of the product.
Referring to fig. 2 again, the fuse mechanism 102 further includes a second fuse 1022, the second fuse 1022 and the first fuse 1021 are arranged at an interval, and the second fuse 1022 is connected to the first copper bar body 1011 and the second copper bar body 1012 respectively. Illustratively, the thickness of the first fuse part 1021 and the thickness of the second fuse part 1022 are set to be consistent, and the condition that the thicknesses of the first fuse part 1021 and the second fuse part 1022 are inconsistent is certainly not excluded, and the material adopted by the first fuse part 1021 and the material adopted by the second fuse part 1022 can be consistent, and the condition that the materials of the first fuse part and the second fuse part are inconsistent is certainly not excluded, the material adopted by the second fuse part 1022 can be a high-temperature fusing material such as brass, red copper, an aluminum plate, silver, a lead-tin alloy, and the like, and the double-layer structure formed by the second fuse part 1022 is distributed vertically (i.e. distributed along the thickness direction of the copper busbar mechanism 101).
It should be noted that the first fuse 1021 and the second fuse 1022 may be arranged in regular shapes, such as a plate shape, or may be arranged in other shapes, such as a curved surface, and in other embodiments, the first fuse 1021 and the second fuse 1022 may be arranged integrally, and the first fuse 1021 is not provided with the first dividing groove 10211, and the second fuse 1022 is not provided with the second dividing groove 10221, and the first fusing part and the second fusing part may be arranged according to actual situations, which are not described in detail herein.
In the process of above-mentioned realization, first fuse 1021 and second fuse 1022 carry out the interval setting, make things convenient for first fuse 1021 and second fuse 1022 to be connected with copper bar mechanism 101 respectively, are favorable to integratively, improve the security of product, reduce the thermal runaway incidence of secondary, improve user experience.
In some embodiments, the second fuse 1022 is hollow to form a double-layer structure, which is beneficial to fusing and heat dissipation, and has relatively low requirements for integration technology, thereby improving product reliability.
In some embodiments, the second fuse 1022 is configured with a plurality of second dividing grooves 10221 distributed at intervals to form a plurality of second fusing parts 10222, which is beneficial to heat dissipation of the second fuse 1022, and is also beneficial to fusing of the second fusing parts 10222 when thermal runaway of a single battery occurs, so as to improve safety performance of a product.
In some embodiments, the thickness of the fuse mechanism 102 is not greater than the thickness of the copper bar mechanism 101, which facilitates the fusing of the fuse mechanism 102 and avoids thermal runaway caused by heating adjacent battery cells. It is understood that the thickness of the fusing mechanism 102 may be set according to the current flowing therethrough, and is not particularly limited.
In a second aspect, the present application further provides a wire harness isolation assembly, comprising: a hot-pressed film substrate; and the copper busbar structure 100 according to any one of the above, the copper busbar structure 100 being fixed to the hot-pressed film substrate.
In a third aspect, the present application further provides a battery module, including: a plurality of battery cells configured; and the wiring harness isolation assembly is characterized in that the copper bar structure 100 of the wiring harness isolation assembly is connected with the single battery so as to be used for acquiring information of the single battery, wherein the information comprises data of voltage, temperature and the like of the single battery.
The battery module provided by the embodiment of the third aspect of the present application includes the wire harness isolation assembly described in the technical solution of the second aspect, so that all technical effects of the above embodiments are achieved, and details are not repeated herein.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A copper busbar structure, comprising:
the copper bar mechanism is provided with a first copper bar body and a second copper bar body, and the first copper bar body and the second copper bar body are arranged at intervals;
and the fusing mechanism is configured between the first copper bar body and the second copper bar body and is used for conducting the first copper bar body and the second copper bar body.
2. The copper bar structure according to claim 1, wherein the fuse mechanism includes a first fuse connected to the first copper bar body and the second copper bar body, respectively, and the first fuse is provided to be hollow to form a double-layered structure.
3. The copper bar structure of claim 2, wherein the first fuse element is provided with a plurality of first dividing grooves spaced apart from each other to form a plurality of first fusing parts.
4. The copper bar structure of claim 2, wherein the fuse mechanism further comprises a second fuse, the second fuse is spaced apart from the first fuse, and the second fuse is connected to the first copper bar body and the second copper bar body, respectively.
5. The copper bar structure according to claim 4, wherein the second fuse is provided to be hollow to form a double-layer structure.
6. The copper bar structure of claim 4, wherein the second fuse element is provided with a plurality of second dividing grooves distributed at intervals to form a plurality of second fusing parts.
7. The brass structure of claim 1, wherein the thickness of the fusing mechanism is no greater than the thickness of the brass mechanism.
8. A wire harness isolation assembly, comprising:
hot-pressing the film substrate; and
the copper bar structure according to any one of claims 1 to 7, which is fixed to the hot-pressed film substrate.
9. A battery module, comprising:
a plurality of battery cells configured; and
the wire harness isolation assembly of claim 8, the copper bar structure of the wire harness isolation assembly being connected to the battery cell for collecting information of the battery cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221820245.5U CN218300175U (en) | 2022-07-14 | 2022-07-14 | Copper bar structure, wire harness isolation assembly and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221820245.5U CN218300175U (en) | 2022-07-14 | 2022-07-14 | Copper bar structure, wire harness isolation assembly and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218300175U true CN218300175U (en) | 2023-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221820245.5U Active CN218300175U (en) | 2022-07-14 | 2022-07-14 | Copper bar structure, wire harness isolation assembly and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218300175U (en) |
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2022
- 2022-07-14 CN CN202221820245.5U patent/CN218300175U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 36 Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: GAC AION NEW ENERGY AUTOMOBILE Co.,Ltd. Country or region after: China Address before: No. 36 Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Patentee before: GAC AION New Energy Vehicle Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |