CN214176205U - Battery module assembly and battery module - Google Patents
Battery module assembly and battery module Download PDFInfo
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- CN214176205U CN214176205U CN202120408060.2U CN202120408060U CN214176205U CN 214176205 U CN214176205 U CN 214176205U CN 202120408060 U CN202120408060 U CN 202120408060U CN 214176205 U CN214176205 U CN 214176205U
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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 provides a battery cell subassembly and battery module, the battery cell subassembly includes: the battery cell comprises a plurality of battery cells, the plurality of battery cells comprise a first battery cell and a second battery cell which are adjacent, a first side surface of the first battery cell is provided with a first positive tab and a first negative tab, and a second side surface of the second battery cell is provided with a second positive tab and a second negative tab; at least one of the first positive tab and the first negative tab is fixedly welded with at least one of the second positive tab and the second negative tab, and the first battery cell and the second battery cell are connected in series or in parallel through the first positive tab, the first negative tab, the second positive tab and the second negative tab; a plurality of electric cores form positive terminal and negative pole end after connecting, and the positive terminal is the anodal ear of electric core unit, and the negative pole end is the negative pole ear of electric core unit. The embodiment of the utility model provides a need use the busbar among the can solving prior art to lead to the easy short circuit of utmost point ear of electric core and make into the higher problem of cost.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a battery cell subassembly and battery module.
Background
A plurality of electric cores in the present battery module are the setting of piling up for the syntropy usually, pass the utmost point ear hole of busbar and weld on the busbar respectively with the utmost point ear of a plurality of electric cores again. The in-process that extremely ear hole was passed at utmost point ear, the utmost point ear of electricity core contacts or collides with the busbar easily, leads to the utmost point ear short circuit of electricity core, influences the normal work of battery module, has increased the cost of manufacture of battery module simultaneously because the use of busbar.
Therefore, the prior art has the problems that a bus bar is needed, so that the tabs of the battery cells are easy to short circuit, and the manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of this application is to provide an electric core subassembly and battery module, solves current needs to use the busbar to lead to the easy short circuit of utmost point ear of electric core and make the higher problem of cost.
In order to achieve the above object, an embodiment of the present invention provides an electric core assembly, including:
the battery cell comprises a plurality of battery cells, the plurality of battery cells comprise a first battery cell and a second battery cell which are adjacent, a first side surface of the first battery cell is provided with a first positive tab and a first negative tab, and a second side surface of the second battery cell is provided with a second positive tab and a second negative tab;
at least one of the first positive tab and the first negative tab is fixedly welded with at least one of the second positive tab and the second negative tab, and the first battery cell and the second battery cell are connected in series or in parallel through the first positive tab, the first negative tab, the second positive tab and the second negative tab;
the battery cell comprises a plurality of battery cells, wherein the battery cells are connected to form a positive end and a negative end, the positive end is a positive lug of the battery cell unit, and the negative end is a negative lug of the battery cell unit.
Optionally, the electric core assembly further comprises:
the first electrode plate is electrically connected with the positive electrode terminal;
and the second electrode plate is electrically connected with the negative electrode end.
Optionally, the plurality of battery cells include at least two battery cells arranged side by side and/or at least two battery cells arranged in a stacked manner.
Optionally, the first battery cell and the second battery cell are arranged side by side, and the first side surface and the second side surface are arranged adjacently.
Optionally, the first positive tab is disposed opposite to any one of the second positive tab and the second negative tab; the first negative tab is disposed opposite the other of the second positive tab and the second negative tab.
Optionally, the first battery cell and the second battery cell are stacked, and the first side face and the second side face are located on the same side of a whole formed by stacking the first battery cell and the second battery cell.
Optionally, the first positive tab and any one of the second positive tab and the second negative tab are stacked; the first negative electrode tab is stacked with the other of the second positive electrode tab and the second negative electrode tab.
Optionally, the positive terminal is formed by the positive tab of any one of the battery cells, or formed by connecting a plurality of positive tabs of the battery cells in parallel.
Optionally, the negative electrode terminal is formed by the negative electrode tab of any one of the battery cells, or formed by connecting the negative electrode tabs of a plurality of the battery cells in parallel.
The embodiment of the utility model provides a still provide a battery module, including at least one foretell electric core subassembly.
In this embodiment, the cell unit includes a plurality of cells, and the first positive tab, the first negative tab, the second positive tab and the second negative tab, which are adjacent to each other, are connected in series or in parallel, so that the plurality of cells form a whole through series connection and/or parallel connection. When series connection or parallel connection are realized to the electric core, it is only necessary to be adjacent to the electric core the utmost point ear to welding fixed can, need not to use the busbar in welding process, thereby reduced electric core the utmost point ear is to the probability of taking place the short circuit, has reduced simultaneously the cost of manufacture of electric core subassembly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and 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 inventive labor.
Fig. 1 is a schematic structural diagram of an electric core assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another electric core assembly according to an embodiment of the present invention;
fig. 3 is an exploded schematic view of another electric core assembly according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
As shown in fig. 1-3, the present invention provides an electric core assembly, including:
the battery cell comprises a plurality of battery cells, each of the battery cells comprises a first battery cell 101 and a first battery cell 102 which are adjacent to each other, a first positive tab 1011 and a first negative tab 1012 are arranged on a first side surface of the first battery cell 101, and a second positive tab 1021 and a second negative tab 1022 are arranged on a second side surface of the first battery cell 102;
at least one of the first positive tab 1011 and the first negative tab 1012 is welded and fixed with at least one of the second positive tab 1021 and the second negative tab 1022, and the first cell 101 and the first cell 102 are connected in series or in parallel through the first positive tab 1011, the first negative tab 1012, the second positive tab 1021 and the second negative tab 1022;
the battery cell comprises a plurality of battery cells, wherein the battery cells are connected to form a positive end and a negative end, the positive end is a positive lug of the battery cell unit, and the negative end is a negative lug of the battery cell unit.
It should be understood that, as shown in fig. 1 to fig. 3, the drawings are only examples of the position relationship between the first battery cell 101 and the first battery cell 102 in a specific embodiment. The number of the battery cells is not limited herein, and the first battery cell 101 and the first battery cell 102 are any two adjacent battery cells.
It should be understood that in the first case, the first positive tab 1011 and the second positive tab 1021 are welded and fixed, and the first negative tab 1012 and the second negative tab 1022 are not welded and fixed. At this time, the first battery cell 101 is connected in parallel with the first battery cell 102.
In the second case, the first positive tab 1011 and the second negative tab 1022 are welded and fixed, and the first negative tab 1012 and the second positive tab 1021 are not welded and fixed. At this time, the first battery cell 101 is connected in series with the first battery cell 102.
In a third case, the first negative tab 1012 and the second negative tab 1022 are welded and fixed, and the first positive tab 1011 and the second positive tab 1021 are not welded and fixed. At this time, the first battery cell 101 is connected in parallel with the first battery cell 102.
In the fourth case, the first negative tab 1012 is welded to the second positive tab 1021, and the first positive tab 1011 is not welded to the second negative tab 1022. At this time, the first battery cell 101 is connected in series with the first battery cell 102.
In the fifth case, the first positive tab 1011 is welded to the second positive tab 1021, and the first negative tab 1012 is welded to the second negative tab 1022. At this time, the first battery cell 101 is connected in parallel with the first battery cell 102.
It should be understood that, in an embodiment, the battery core assembly further includes a support frame, wherein the connection manner of the battery cell units and the support frame is not limited herein. For example, in an embodiment, the battery cell unit and the support frame are fixed in a clamping manner. In another embodiment, the battery cell unit and the support frame are fixed by bonding. Furthermore, the structure of the support frame is not limited herein, the cell unit is located in the support frame, and the cell unit is fixedly connected with the support frame. The structure of the support frame can be adjusted according to the number and arrangement of the battery cells in the battery cell unit. Through the setting of braced frame, can support electric core unit and fixed the position of electric core in the electric core unit for adjacent have the clearance between the electric core, avoid appearing the short circuit condition.
In this embodiment, the cell unit includes a plurality of cells, and any adjacent first cell 101 and first cell 102 are connected in series or in parallel through the first positive tab 1011, the first negative tab 1012, the second positive tab 1021 and the second negative tab 1022, so that a plurality of cells form a whole through series and/or parallel connection. When series connection or parallel connection are realized to the electric core, it is only necessary to be adjacent to the electric core the utmost point ear to welding fixed can, need not to use the busbar in welding process, thereby reduced electric core the utmost point ear is to the probability of taking place the short circuit, has reduced simultaneously the cost of manufacture of electric core subassembly.
Optionally, the electric core assembly further comprises:
a first electrode tab 20, the first electrode tab 20 being electrically connected to the positive terminal;
and the second electrode plate 30, wherein the second electrode plate 30 is electrically connected with the negative electrode end.
It should be understood that the size and structure of the first electrode sheet 20 are not limited herein. The first electrode plate 20 is electrically connected with the positive terminal, and the battery cell unit can be conveniently connected with an external structure through the arrangement of the first electrode plate 20.
It should be understood that the size and structure of the second electrode sheet 30 are not limited herein. The second electrode plate 30 is electrically connected with the negative electrode end, and the battery cell unit can be conveniently connected with an external structure through the arrangement of the second electrode plate 30.
Optionally, the plurality of battery cells include at least two battery cells arranged side by side and/or at least two battery cells arranged in a stacked manner.
In a first case, the plurality of cells includes at least two cells arranged side by side. It should be understood that, the plurality of battery cells includes at least two battery cells arranged side by side, that is, the number of the battery cells is at least two, and the battery cells include the first battery cell 101 and the first battery cell 102 which are adjacent to each other, and the first battery cell 101 and the first battery cell 102 are arranged side by side.
In a second case, the plurality of cells includes at least two cells arranged in a stack. It should be understood that, the plurality of battery cells includes at least two battery cells arranged in a stacked manner, that is, the number of the battery cells is at least two, and the battery cells include the first battery cell 101 and the first battery cell 102 which are adjacent to each other, and the first battery cell 101 and the first battery cell 102 are arranged in a stacked manner.
In a third case, the plurality of battery cells includes at least two battery cells arranged side by side and at least two battery cells arranged in a stacked manner. It should be understood that, the plurality of battery cells includes at least two battery cells arranged side by side and at least two battery cells arranged in a stacked manner, that is, the number of the battery cells is at least three, the battery cells include the first battery cell 101, the first battery cell 102 and a third battery cell, the first battery cell 101 is arranged side by side with the first battery cell 102, and the first battery cell 101 is arranged in a stacked manner with the third battery cell.
Optionally, the first battery cell 101 and the first battery cell 102 are arranged side by side, and the first side surface and the second side surface are arranged adjacently.
In this embodiment, the first battery cell 101 and the first battery cell 102 are arranged side by side, and the first side surface and the second side surface are arranged adjacent to each other, so that the first tab pair and the second tab pair are arranged adjacent to each other. The first tab pair can be understood as the first positive tab 1011 and the second negative tab 1022; the second tab pair may be understood as the second positive tab 1021 and the second negative tab 1022. Because first utmost point ear pair with second utmost point ear pair is adjacent setting, has improved the welding first utmost point ear pair with the simple operation degree of second utmost point ear pair with first utmost point ear pair with the connection stability of second utmost point ear pair.
Optionally, the first positive tab 1011 is disposed opposite to any one of the second positive tab 1021 and the second negative tab 1022; the first negative tab 1012 is disposed opposite the other of the second positive tab 1021 and the second negative tab 1022.
In the first case, referring to fig. 1 in particular, the first positive tab 1011 is disposed opposite to the second positive tab 1021; the first negative tab 1012 is disposed opposite the second negative tab 1022. When the first positive tab 1011 and the second positive tab 1021 are welded and fixed, the first end of the first battery cell 101 and the first end of the first battery cell 102 may be considered to be connected in parallel; in the case where the first negative electrode tab 1012 and the second negative electrode tab 1022 are welded and fixed, the second end of the first battery cell 101 and the second end of the first battery cell 102 may be considered to be in parallel. Further, when the cell unit only comprises two cells, the first positive tab 1011 and the second positive tab 1021 are welded and fixed to form a positive terminal; the first negative tab 1012 and the second negative tab 1022 are welded and fixed to form a negative terminal.
In the second case, referring to fig. 2 in particular, the first positive tab 1011 is disposed opposite to the second negative tab 1022; the first negative tab 1012 is disposed opposite the second positive tab 1021. When the first positive tab 1011 and the second negative tab 1022 are welded and fixed, the first end of the first battery cell 101 and the first end of the first battery cell 102 are considered to be connected in series; at this time, the second positive tab 1021 forms a positive terminal and the first negative tab 1012 forms a negative terminal.
When the first negative tab 1012 is welded and fixed to the second positive tab 1021, the second end of the first cell 101 and the second end of the first cell 102 can be considered as being connected in series; at this time, the first positive tab 1011 forms a positive terminal and the second negative tab 1022 forms a negative terminal.
In this embodiment, the connection between the tabs disposed opposite to each other may realize the series connection or the parallel connection between the adjacent battery cells. The first positive tab 1011 is disposed opposite to any one of the second positive tab 1021 and the second negative tab 1022; the first negative tab 1012 is disposed opposite the other of the second positive tab 1021 and the second negative tab 1022. Because adjacent be for relative setting between the utmost point ear, further improved between the utmost point ear carry out welded simple operation degree and the connection stability between the utmost point ear.
Optionally, the first battery cell 101 and the first battery cell 102 are stacked, and the first side surface and the second side surface are located on the same side of a whole formed by stacking the first battery cell 101 and the first battery cell 102.
In this embodiment, the first battery cell 101 and the first battery cell 102 are stacked, and the first side surface and the second side surface are located on the same side of a whole formed by stacking the first battery cell 101 and the first battery cell 102. Because first utmost point ear pair with second utmost point ear is to lieing in same one side, has improved the welding first utmost point ear pair with the simple operation degree of second utmost point ear pair with first utmost point ear pair with the connection stability of second utmost point ear pair.
Optionally, the first positive tab 1011 is stacked with any one of the second positive tab 1021 and the second negative tab 1022; the first negative electrode tab 1012 is stacked on the other of the second positive electrode tab 1021 and the second negative electrode tab 1022.
In the first case, the first positive tab 1011 and the second positive tab 1021 are stacked; the first negative electrode tab 1012 and the second negative electrode tab 1022 are stacked. When the first positive tab 1011 and the second positive tab 1021 are welded and fixed, the first end of the first battery cell 101 and the first end of the first battery cell 102 may be considered to be connected in parallel; in the case where the first negative electrode tab 1012 and the second negative electrode tab 1022 are welded and fixed, the second end of the first battery cell 101 and the second end of the first battery cell 102 may be considered to be in parallel. Further, when the cell unit only comprises two cells, the first positive tab 1011 and the second positive tab 1021 are welded and fixed to form a positive terminal; the first negative tab 1012 and the second negative tab 1022 are welded and fixed to form a negative terminal.
In the second case, referring to fig. 3 in particular, the first positive tab 1011 and the second negative tab 1022 are stacked; the first negative electrode tab 1012 and the second positive electrode tab 1021 are stacked. When the first positive tab 1011 and the second negative tab 1022 are welded and fixed, the first end of the first battery cell 101 and the first end of the first battery cell 102 are considered to be connected in series; at this time, the second positive tab 1021 forms a positive terminal and the first negative tab 1012 forms a negative terminal.
When the first negative tab 1012 is welded and fixed to the second positive tab 1021, the second end of the first cell 101 and the second end of the first cell 102 can be considered as being connected in series; at this time, the first positive tab 1011 forms a positive terminal and the second negative tab 1022 forms a negative terminal.
In this embodiment, the connection between the tabs arranged in a stacked manner may realize the series connection or the parallel connection between the adjacent battery cells. The first positive tab 1011 is stacked on one of the second positive tab 1021 and the second negative tab 1022; the first negative electrode tab 1012 is stacked on the other of the second positive electrode tab 1021 and the second negative electrode tab 1022. Because adjacent for range upon range of setting between the utmost point ear, further improved the connection stability between the simple operation degree of carrying out the welding between the utmost point ear and the utmost point ear.
Optionally, the positive terminal is formed by the positive tab of any one of the battery cells, or formed by connecting a plurality of positive tabs of the battery cells in parallel.
In the first case, the positive terminal is formed by the positive tab of any one of the battery cells, the positive tab is electrically connected to the first electrode tab 20, wherein the electrically connecting of the positive tab to the first electrode tab 20 is understood as the welding fixation of the positive tab to the first electrode tab 20.
In the second case, the positive terminal is formed by connecting the positive lugs of a plurality of battery cells in parallel. The positive electrode end is formed by connecting a plurality of positive electrode tabs of the battery cells in parallel, that is, the positive electrode tabs of the adjacent battery cells are welded and fixed to form the positive electrode end, and the positive electrode end is electrically connected with the first electrode plate 20. The electrically connecting of the positive terminal and the first electrode sheet 20 may be understood as welding and fixing a plurality of adjacent positive tabs to the positive tab after welding and fixing.
In a third case, the positive terminal is formed by connecting the positive lugs of a plurality of battery cells in parallel. The positive electrode end is formed by connecting the positive electrode tabs of a plurality of battery cells in parallel, that is, the positive electrode tabs of a plurality of adjacent battery cells are electrically connected with the first electrode plate 20 respectively. The positive electrode tabs of the adjacent battery cells are electrically connected to the first electrode plate 20, which means that the positive electrode tabs are welded and fixed to the first electrode plate 20.
Optionally, the negative electrode terminal is formed by the negative electrode tab of any one of the battery cells, or formed by connecting the negative electrode tabs of a plurality of the battery cells in parallel.
In the first case, the negative electrode terminal is formed by the negative electrode tab of any one of the battery cells, and the negative electrode tab is electrically connected to the second electrode tab 30, where the negative electrode tab is electrically connected to the second electrode tab 30, which may be understood as that the negative electrode tab is fixedly welded to the second electrode tab 30.
In a second case, the negative terminal is formed by connecting the negative tabs of a plurality of the battery cells in parallel. The negative electrode end is formed by connecting the negative electrode tabs of the plurality of battery cells in parallel, that is, the negative electrode tabs of the plurality of adjacent battery cells are welded and fixed to form the negative electrode end, and the negative electrode end is electrically connected to the second electrode plate 30. The negative electrode end is electrically connected to the second electrode tab 30, which can be understood as that a plurality of adjacent negative electrode tabs are welded and fixed to the negative electrode tabs after welding and fixing.
In a third case, the negative terminal is formed by connecting the negative tabs of a plurality of the battery cells in parallel. The negative electrode end is formed by connecting the negative electrode tabs of the plurality of battery cells in parallel, that is, the negative electrode tabs of the plurality of adjacent battery cells are electrically connected to the second electrode plate 30 respectively. The negative electrode tabs of the adjacent battery cells are electrically connected to the second electrode tab 30, which means that the negative electrode tabs are welded and fixed to the second electrode tab 30.
The embodiment of the utility model provides a still provide a battery module, including at least one foretell electric core subassembly.
It should be understood that the number of the electric core assembly is not limited herein, and the structure of a plurality of the electric core assemblies may be different.
The embodiment of the present invention provides an electric core assembly as the electric core assembly in the above-mentioned embodiment, and the specific structure can refer to the description in the above-mentioned embodiment, and is not described herein again. Since the battery cell assembly in the above embodiment is adopted in the present embodiment, the battery module provided by the present embodiment has all the beneficial effects of the battery cell assembly in the above embodiment.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An electric core assembly, comprising:
the battery cell comprises a plurality of battery cells, the plurality of battery cells comprise a first battery cell and a second battery cell which are adjacent, a first side surface of the first battery cell is provided with a first positive tab and a first negative tab, and a second side surface of the second battery cell is provided with a second positive tab and a second negative tab;
at least one of the first positive tab and the first negative tab is fixedly welded with at least one of the second positive tab and the second negative tab, and the first battery cell and the second battery cell are connected in series or in parallel through the first positive tab, the first negative tab, the second positive tab and the second negative tab;
the battery cell comprises a plurality of battery cells, wherein the battery cells are connected to form a positive end and a negative end, the positive end is a positive lug of the battery cell unit, and the negative end is a negative lug of the battery cell unit.
2. The electric core assembly according to claim 1, further comprising:
the first electrode plate is electrically connected with the positive electrode terminal;
and the second electrode plate is electrically connected with the negative electrode end.
3. The battery pack of claim 1, wherein the plurality of cells comprises at least two cells arranged side-by-side and/or at least two cells arranged in a stack.
4. The electrical core assembly of claim 3, wherein the first electrical core and the second electrical core are arranged side-by-side, and the first side and the second side are arranged adjacent to each other.
5. The electrical core assembly of claim 4,
the first positive tab is arranged opposite to any one of the second positive tab and the second negative tab; the first negative tab is disposed opposite the other of the second positive tab and the second negative tab.
6. The battery core assembly of claim 3, wherein the first battery cell and the second battery cell are in a stacked arrangement, and the first side and the second side are located on a same side of a whole formed by the stacked arrangement of the first battery cell and the second battery cell.
7. The electric core assembly according to claim 6,
the first positive tab and any one of the second positive tab and the second negative tab are stacked; the first negative electrode tab is stacked with the other of the second positive electrode tab and the second negative electrode tab.
8. The battery pack of claim 1, wherein said positive terminal is formed by said positive tab of any one of said cells, or by said positive tabs of a plurality of said cells connected in parallel.
9. The battery pack of claim 1, wherein the negative terminal is formed by the negative tab of any one of the cells, or by the negative tabs of a plurality of the cells connected in parallel.
10. A battery module comprising at least one electric core assembly according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120408060.2U CN214176205U (en) | 2021-02-23 | 2021-02-23 | Battery module assembly and battery module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120408060.2U CN214176205U (en) | 2021-02-23 | 2021-02-23 | Battery module assembly and battery module |
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| CN214176205U true CN214176205U (en) | 2021-09-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114373976A (en) * | 2021-12-27 | 2022-04-19 | 合肥国轩高科动力能源有限公司 | Soft packet of lithium cell of many utmost points ear |
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2021
- 2021-02-23 CN CN202120408060.2U patent/CN214176205U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114373976A (en) * | 2021-12-27 | 2022-04-19 | 合肥国轩高科动力能源有限公司 | Soft packet of lithium cell of many utmost points ear |
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