CN210379226U - No busbar battery module structure - Google Patents
No busbar battery module structure Download PDFInfo
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- CN210379226U CN210379226U CN201921045051.0U CN201921045051U CN210379226U CN 210379226 U CN210379226 U CN 210379226U CN 201921045051 U CN201921045051 U CN 201921045051U CN 210379226 U CN210379226 U CN 210379226U
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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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Abstract
The utility model discloses a no busbar battery module structure, no busbar battery module structure includes: the tab support is provided with at least one through hole; the connecting pieces are respectively arranged on the upper surfaces of the lug supports, one connecting piece is arranged between every two adjacent through holes, the battery cell lugs connected in parallel or in series penetrate through the through holes, and the battery cell lugs are stacked above the connecting pieces through bending and are directly connected and fixed with the connecting pieces; the battery module is free of busbars. The utility model discloses simple structure, simple to operate has reduced the requirement to electric core interval, is applicable to the limited application scene of busbar size in the module.
Description
Technical Field
The utility model relates to a battery technology field, concretely relates to no busbar battery module structure.
Background
The thickness of the cell is often limited due to cell swelling limitations, etc. The battery cells are greatly restricted in the size of the bus bar after being grouped, and under the condition that high-rate charging and discharging are needed, factors such as overcurrent capacity, restriction on the size space of the bus bar, the assembly size requirement of a welding process and the like are considered, so that the serial and parallel connection is not suitable for continuously adopting the bus bar mode.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem to a no busbar battery module structure and assembly method are provided.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a busless battery module structure, comprising:
the tab support is provided with at least one through hole;
the connecting pieces are respectively arranged on the upper surfaces of the lug supports, one connecting piece is arranged between every two adjacent through holes, the battery cell lugs connected in parallel or in series penetrate through the through holes, and the battery cell lugs are stacked above the connecting pieces through bending and are directly connected and fixed with the connecting pieces; the battery module is free of busbars.
The utility model discloses a preferred embodiment, every adjacent two set up one between the through-hole the connecting piece, parallelly connected or the electric core utmost point ear of establishing ties passes the through-hole, electric core utmost point ear is overlapped through bending the top of connecting piece, and with connecting piece direct weld is fixed.
In a preferred embodiment of the present invention, the battery cell tab includes at least one positive tab and at least one negative tab.
In a preferred embodiment of the present invention, the positive tab is located on one side of the battery cell, the negative tab is located on the other side of the battery cell, 1-6 positive tabs are adjacent to each other and pass through one of the through holes and are sequentially horizontally stacked above the connecting member by bending, and 1-6 negative tabs are adjacent to each other and pass through another through hole and are sequentially horizontally stacked above the positive tabs by bending.
In a preferred embodiment of the present invention, the number of the positive electrode tabs passing through the same through hole is the same as the number of the negative electrode tabs passing through the same through hole.
In a preferred embodiment of the present invention, the connecting member is directly fixed to the tab holder.
In a preferred embodiment of the present invention, the connecting member is directly welded to the tab holder.
In a preferred embodiment of the present invention, there is no gap between the negative electrode tab stacked above the positive electrode tab and the positive electrode tab.
In a preferred embodiment of the present invention, there is no gap between the positive lugs passing through the through-holes.
In a preferred embodiment of the present invention, there is no gap between the negative electrode tabs passing through the through-holes.
The utility model has the advantages that:
because the module space is limited among the prior art, when using the busbar to converge, busbar itself occupies the space, has further restricted the space of other subassemblies. The utility model provides a no busbar in the battery module has solved the technical problem that above-mentioned prior art exists, the technical scheme that this disclosure provided simultaneously, simple structure, simple to operate has reduced the requirement to electric core interval, is applicable to the interior limited application scene of busbar size of battery module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of cell arrangement;
FIG. 2 is a schematic view of a primary welding process of the present invention;
FIG. 3 is a schematic view of the second welding of the present invention;
fig. 4 is a schematic view of the assembly of the tab holder with the connecting member;
fig. 5 is a perspective view of a tab holder;
fig. 6 is a plan view of a tab holder;
FIG. 7 is a perspective view of the connector;
fig. 8 is a top view of the connector.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, when a plurality of battery cells 300 are stacked to form a battery module, when the thickness of the battery cell 300 is small, the tab spacing of the battery cell 300 is small, and limitations such as overcurrent capacity, space size in the module, welding assembly requirements and the like are considered, and at this time, it is not suitable to continue to use a bus bar to realize series connection or parallel connection of the battery cells 300. The term "plurality" or "at least one" as used in this disclosure means 2 to 100.
Referring to fig. 2 and 3, the present invention provides a non-busbar battery module structure, which includes a tab holder 100 and at least one connector 200.
The tab support 100 is disposed above the battery cell 300 of the battery module, and is used for supporting and positioning tabs on the connecting member 200 and the battery cell 300.
At least one through hole 110 is arranged on the tab support 100 at regular intervals, and tabs on each of the cells 300 connected in series or in parallel can pass through the corresponding through holes 110.
These coupling members 200 are respectively provided on the upper surfaces of the tab frames 100, and one coupling member 200 is provided between every adjacent two of the through holes 110.
Therefore, the tabs on the battery cells 300 penetrate through the through holes 110, can be horizontally stacked on the connecting piece 200 after being bent, and then can be connected in series or in parallel with the battery cells 300 only by directly welding the tabs and the connecting piece 200. The battery module that this disclosure provided does not have the busbar.
As shown in fig. 7 and 8, the cross section of the connecting member 200 is rectangular, and as shown in fig. 4 to 6, the connecting member 200 is fixedly disposed on the upper surface of the tab support 100, so that energy can be prevented from penetrating into the tab support 100 and the battery cell 300 when the connecting member 200 is welded to a tab, and a protective effect is achieved. In addition, the connection member 200 is also connected to a voltage collecting terminal of the battery module.
The tabs of the battery cell 300 comprise at least one positive tab and at least one negative tab, the positive tab is positioned on one side of the battery cell 300, the negative tab is positioned on the other side of the battery cell 300, every adjacent 1-6 positive tabs penetrate through one through hole and are sequentially and horizontally stacked above the connecting piece 200 through bending, and every adjacent 1-6 negative tabs penetrate through the other through hole and are sequentially and horizontally stacked above the positive tab through bending.
One through hole generally penetrates through 1-6 positive lugs or 1-6 negative lugs, and the excessive number of the lugs has poor overcurrent effect and low safety performance.
Based on the implementation of the above scheme, the present application further provides an assembly method of a busbar-free battery module structure, which is: the tabs of the battery cell 300 are directly welded to realize the series connection or the parallel connection of the battery cells 300.
Taking the 2P module as an example, referring to fig. 2, the assembling method of the busless battery module specifically includes the following steps:
(1) firstly, placing at least one connecting piece 200 on the upper surface of the tab support 100, and arranging one connecting piece 200 between every two adjacent through holes 110;
(2) correspondingly penetrating 1-6 adjacent negative electrode tabs 310 of the battery cell 300 through one through hole 110 in the tab support 100, and then bending the negative electrode tabs 310 to be horizontally stacked above the corresponding connecting piece 200;
(3) correspondingly penetrating 1-6 adjacent positive lugs 320 of the battery cell 300 through one through hole 110 in the lug support 100, then bending the positive lugs 320, and horizontally laminating the positive lugs above the corresponding negative lugs 310;
(4) then, rolling the negative electrode tabs 310 and the positive electrode tabs 320 above each connecting piece 200;
(5) compressing the flattened negative electrode tabs 310 and the positive electrode tabs 320 to ensure that no gap exists between the positive electrode tabs 320, between the positive electrode tabs 320 and the negative electrode tabs 310, between the negative electrode tabs 310 and the connecting piece 200;
(6) the negative tab 310, the positive tab 320, and the connection member 330 are welded together.
Preferably, the number of the tabs in (2) and (3) is the same.
In addition, when welding, the weld 410 between each layer of tab needs to be ensured to be wide enough to meet the requirement of overcurrent capacity.
The steps are only needed to be welded once, and the working efficiency is greatly improved.
Referring to fig. 3, the assembling method of the busbar-less battery module structure may further include the following steps:
(1) firstly, placing at least one connecting piece 200 on the upper surface of the tab support 100, and arranging one connecting piece 200 between every two adjacent through holes 110;
(2) correspondingly penetrating 1-6 adjacent negative electrode tabs 310 of the battery cell 300 through one through hole 110 in the tab support 100, and then bending the negative electrode tabs 310 to be horizontally stacked above the corresponding connecting piece 200;
(3) each negative tab 310 was rolled flat over the connector 200;
(4) after the roller is flat, the pressing is carried out to ensure that no gap exists between the negative electrode tabs 310 and the connecting piece 200;
(5) welding the negative tab 310 to the connector 200;
(6) correspondingly penetrating 1-6 adjacent positive lugs 320 of the battery cell 300 through one through hole 110 in the lug support 100, then bending the positive lugs 320, and horizontally laminating the positive lugs above the corresponding welded negative lugs 310;
(7) rolling the positive tab 320 over the negative tab 310;
(8) after the roller is flattened, the roller is pressed tightly to ensure that no gap exists between the positive lugs 320 and between the negative lugs 310 and the positive lugs 320;
(9) the negative tab 310 is welded to the positive tab 320.
Preferably, the number of the tabs in (2) and (6) is the same.
The above steps are performed twice, which is performed under the condition that requirements such as actual welding power or weld quality cannot be penetration once, and the above steps may be performed more than twice under the condition that more cells 300 are connected in parallel, which may be determined according to actual requirements.
In addition, the position of the first weld 430 is required to correspond to the second welding, and the second welded weld 420 is fused with the first weld, so that the post-welded positive tab 320 is connected with the first welded negative tab 310, and the weld widths of the first weld 430 and the second weld 420 at each layer of tabs meet the requirement of overcurrent capacity.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a no bus bar battery module structure which characterized in that, no bus bar battery module structure includes:
the tab support is provided with at least one through hole;
the connecting pieces are respectively arranged on the upper surfaces of the lug supports, one connecting piece is arranged between every two adjacent through holes, the battery cell lugs connected in parallel or in series penetrate through the through holes, and the battery cell lugs are stacked above the connecting pieces through bending and are directly connected and fixed with the connecting pieces; the battery module is free of busbars.
2. The busbar-free battery module structure of claim 1, wherein the cell tabs comprise at least one positive tab and at least one negative tab.
3. The busbar-free battery module structure according to claim 2, wherein the positive tab is located on one side of the battery cell, the negative tab is located on the other side of the battery cell, every adjacent 1-6 positive tabs pass through one of the through holes and are sequentially horizontally stacked above the connecting member by bending, and every adjacent 1-6 negative tabs pass through the other through hole and are sequentially horizontally stacked above the positive tab by bending.
4. The bushingless battery module structure of claim 3, wherein the number of positive tabs passing through the same through hole is the same as the number of negative tabs passing through the same through hole.
5. The buss-less battery module construction of claim 1, wherein the connecting member is secured directly to the tab support.
6. The buss-less battery module construction of claim 5, wherein the connecting members are welded directly to the tab holders.
7. The busbar-less battery module structure according to claim 2, wherein there is no gap between the negative electrode tab and the positive electrode tab stacked above the positive electrode tab.
8. The busless battery module structure of claim 3, wherein there is no gap between the positive tabs passing through the through-holes.
9. The bushingless battery module structure of claim 3, wherein there is no gap between the negative electrode tabs that pass through the through-holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045051.0U CN210379226U (en) | 2019-07-05 | 2019-07-05 | No busbar battery module structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045051.0U CN210379226U (en) | 2019-07-05 | 2019-07-05 | No busbar battery module structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210379226U true CN210379226U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921045051.0U Active CN210379226U (en) | 2019-07-05 | 2019-07-05 | No busbar battery module structure |
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| CN (1) | CN210379226U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477929A (en) * | 2020-04-30 | 2020-07-31 | 昆山宝创新能源科技有限公司 | Battery pack and vehicle |
| CN112542662A (en) * | 2020-11-18 | 2021-03-23 | 东风汽车集团有限公司 | Soft-packaged electrical core series connection fixing device, battery module, battery package and car |
| CN112542656A (en) * | 2020-11-18 | 2021-03-23 | 东风汽车集团有限公司 | Utmost point ear limiting plate, battery module, battery package and car |
| CN112542661A (en) * | 2020-11-18 | 2021-03-23 | 东风汽车集团有限公司 | Laminate polymer battery core opposition fixed block, battery module, battery package and car |
| CN112542657A (en) * | 2020-11-18 | 2021-03-23 | 东风汽车集团有限公司 | Soft package battery cell cascade grouping method and device |
| CN115117564A (en) * | 2022-07-07 | 2022-09-27 | 天津市捷威动力工业有限公司 | Battery core assembly connecting structure and connecting method thereof, battery core unit, battery module and system |
| WO2023123350A1 (en) * | 2021-12-31 | 2023-07-06 | 远景动力技术(江苏)有限公司 | Battery module without busbar, and battery pack |
-
2019
- 2019-07-05 CN CN201921045051.0U patent/CN210379226U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477929A (en) * | 2020-04-30 | 2020-07-31 | 昆山宝创新能源科技有限公司 | Battery pack and vehicle |
| CN112542662A (en) * | 2020-11-18 | 2021-03-23 | 东风汽车集团有限公司 | Soft-packaged electrical core series connection fixing device, battery module, battery package and car |
| CN112542656A (en) * | 2020-11-18 | 2021-03-23 | 东风汽车集团有限公司 | Utmost point ear limiting plate, battery module, battery package and car |
| CN112542661A (en) * | 2020-11-18 | 2021-03-23 | 东风汽车集团有限公司 | Laminate polymer battery core opposition fixed block, battery module, battery package and car |
| CN112542657A (en) * | 2020-11-18 | 2021-03-23 | 东风汽车集团有限公司 | Soft package battery cell cascade grouping method and device |
| CN112542656B (en) * | 2020-11-18 | 2022-05-17 | 东风汽车集团有限公司 | Utmost point ear limiting plate, battery module, battery package and car |
| CN112542657B (en) * | 2020-11-18 | 2022-05-20 | 东风汽车集团有限公司 | Soft package battery cell cascade grouping method and device |
| WO2023123350A1 (en) * | 2021-12-31 | 2023-07-06 | 远景动力技术(江苏)有限公司 | Battery module without busbar, and battery pack |
| CN115117564A (en) * | 2022-07-07 | 2022-09-27 | 天津市捷威动力工业有限公司 | Battery core assembly connecting structure and connecting method thereof, battery core unit, battery module and system |
| CN115117564B (en) * | 2022-07-07 | 2023-07-07 | 天津市捷威动力工业有限公司 | Battery cell assembly connection structure, connection method thereof, battery cell unit, module and system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210325 Address after: Room 201, building a, Xingli Zundian furniture factory, No.1 shouhe Road, Jinsha community, Kengzi street, Pingshan District, Shenzhen City, Guangdong Province Patentee after: Evergrande new energy technology (Shenzhen) Co.,Ltd. Patentee after: SHANGHAI CENAT NEW ENERGY Co.,Ltd. Patentee after: NANCHANG CENAT NEW ENERGY Co.,Ltd. Patentee after: GUANGXI CENAT NEW ENERGY Co.,Ltd. Patentee after: JIANGSU CENAT NEW ENERGY Co.,Ltd. Address before: 518052 Room 201, building a, No.1 Qianhai 1st Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen City, Guangdong Province Patentee before: Hengda New Energy Technology Group Co.,Ltd. Patentee before: SHANGHAI CENAT NEW ENERGY Co.,Ltd. Patentee before: NANCHANG CENAT NEW ENERGY Co.,Ltd. Patentee before: GUANGXI CENAT NEW ENERGY Co.,Ltd. Patentee before: JIANGSU CENAT NEW ENERGY Co.,Ltd. |