CN219998443U - Negative electrode switching structure and lithium ion battery - Google Patents
Negative electrode switching structure and lithium ion battery Download PDFInfo
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- CN219998443U CN219998443U CN202321339830.8U CN202321339830U CN219998443U CN 219998443 U CN219998443 U CN 219998443U CN 202321339830 U CN202321339830 U CN 202321339830U CN 219998443 U CN219998443 U CN 219998443U
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- negative electrode
- plate
- switching structure
- electrode switching
- groove
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 29
- 238000012546 transfer Methods 0.000 claims abstract description 17
- 230000001788 irregular Effects 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 12
- 238000012545 processing Methods 0.000 abstract description 3
- 239000003792 electrolyte Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a negative electrode switching structure and a lithium ion battery, wherein the negative electrode switching structure comprises: the negative electrode adapter plate is provided with a first surface and a second surface which are oppositely arranged, the first surface is a plane, and the first surface faces towards the battery cell; and the connecting piece is convexly arranged on the second surface of the negative electrode adapter plate and is used for connecting the negative electrode cover plate. The technical scheme of the utility model effectively solves the technical problems of multiple processing procedures, high cost, low heat transfer efficiency and poor conductive effect of the traditional lithium ion battery.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a negative electrode switching structure and a lithium ion battery.
Background
With the development of electronic technology, lithium ion batteries are increasingly widely used in life of people, and the tendency of replacing traditional batteries is great. The cylindrical lithium ion battery has the advantages of standardized production flow, high production efficiency, excellent cycle performance, good consistency and the like, and is widely applied to daily life.
In the related art, the negative electrode end part of the lithium ion battery comprises three independent parts, namely a negative electrode column, a negative electrode adapter plate and a negative electrode cover plate, and the negative electrode adapter plate and the negative electrode cover plate are required to be welded and assembled on the negative electrode column respectively during assembly, so that the lithium ion battery has the advantages of multiple processing procedures, complex process and high production cost. Meanwhile, the diversion trench is arranged on one side of the negative electrode adapter plate, which faces the lithium ion battery core, so that heat transfer and conduction of the lithium ion battery are not facilitated.
Disclosure of Invention
The utility model provides a negative electrode switching structure and a lithium ion battery, which are used for solving the technical problems of more processing procedures, high cost, low heat transfer efficiency and poor conductive effect of the traditional lithium ion battery.
To this end, in a first aspect, the present utility model provides a negative electrode switching structure, including:
the negative electrode adapter plate is provided with a first surface and a second surface which are oppositely arranged, the first surface is a plane, and the first surface faces towards the battery cell; and
and the connecting piece is convexly arranged on the second surface of the negative electrode adapter plate and is used for connecting the negative electrode cover plate.
In one possible embodiment, the negative electrode cover plate is provided with a connection protrusion, the negative electrode adapter plate is provided with a connection hole, and the connection protrusion is embedded in the connection hole to connect and fasten the negative electrode cover plate and the negative electrode adapter plate.
In one possible embodiment, the negative electrode adapter plate is further provided with a avoiding hole and a first groove, and the first groove is communicated with the periphery of the negative electrode adapter plate and the avoiding hole.
In one possible embodiment, the negative electrode adapter plate is further provided with a second groove, and the second groove is communicated with the periphery of the negative electrode adapter plate and the connecting hole.
In one possible embodiment, the relief aperture is any one of a circle, oval, sector, square, rectangle, diamond, or irregular polygon.
In one possible embodiment, the plurality of connecting holes are provided, the plurality of second grooves are provided, and one connecting hole corresponds to at least one second groove; the avoidance holes are formed in a plurality of positions, the first grooves are formed in a plurality of positions, one avoidance hole at least corresponds to one first groove, and the connecting holes and the avoidance holes are arranged in a crossing mode.
In one possible embodiment, the negative electrode cover plate is provided with a connection through hole, the connecting piece comprises a first connection boss and a second connection boss, the first connection boss is arranged on the negative electrode adapter plate, the second connection boss is arranged on one side, away from the negative electrode adapter plate, of the first connection boss, and the negative electrode cover plate is connected to the first connection boss through the connection through hole.
In one possible embodiment, a third groove is further formed on the negative electrode adapter plate, the third groove is located on the first surface, and the third groove is disposed opposite to the connecting piece.
In one possible embodiment, the negative electrode adapter plate is integrally formed with the connector.
In a second aspect, the present utility model also provides a lithium ion battery, including:
a housing having a first opening and a second opening disposed opposite to each other;
the battery cell is arranged in the shell;
the positive electrode cover plate component is covered on the first opening of the shell;
the negative electrode switching structure is arranged in the second opening of the shell and is electrically connected with the negative electrode lug of the battery cell; and
the negative electrode cover plate is connected to the negative electrode switching structure and covers the second opening of the shell.
According to the negative electrode switching structure and the lithium ion battery provided by the embodiment of the utility model, the negative electrode switching structure comprises: the negative electrode adapter plate is provided with a first surface and a second surface which are oppositely arranged, the first surface is a plane, and the first surface faces towards the battery cell; and the connecting piece is convexly arranged on the second surface of the negative electrode adapter plate and is used for connecting the negative electrode cover plate. According to the technical scheme, the concrete configuration of the negative electrode switching structure is optimized, so that the arrangement of the diversion trench on one side of the negative electrode switching structure facing the battery cell is avoided, and the heat transfer efficiency and the electric conduction effect of the negative electrode switching structure are greatly improved. Specifically, the negative electrode switching structure is configured to be a combined component at least comprising a negative electrode switching plate and a connecting piece, wherein the connecting piece is convexly arranged on the negative electrode switching plate, the first surface of the negative electrode switching plate is arranged towards the battery cell, and the second surface of the negative electrode switching plate is arranged towards the negative electrode cover plate. Because the first surface of the negative electrode adapter plate is a plane, no diversion trench is arranged on the first surface, and the heat transfer effect and the electric conduction effect of the negative electrode adapter structure are not consumed by the diversion trench, so that the heat transfer efficiency and the electric conduction effect of the negative electrode adapter structure are improved. Meanwhile, the negative electrode cover plate is connected through the connecting piece, so that the connection tightness of the negative electrode cover plate and the negative electrode adapter plate is improved, and the stability and safety of the negative electrode end part of the lithium ion battery are improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort. In addition, in the drawings, like parts are designated with like reference numerals and the drawings are not drawn to actual scale.
Fig. 1 is a schematic perspective view of a cathode switching structure according to an embodiment of the present utility model;
fig. 2 is a cross-sectional view of a lithium ion battery provided in an embodiment of the present utility model;
fig. 3 is a partial enlarged view of fig. 2.
Reference numerals illustrate:
100. a negative electrode adapter plate; 101. a first face; 102. a second face; 103. a connection hole; 104. avoidance holes; 105. a first groove; 106. a second groove; 107. a third groove;
200. a connecting piece; 210. a first connection boss; 220. a second connection boss;
10. a housing; 20. a battery cell; 30. a positive electrode cover plate assembly; 40. a negative electrode switching structure; 50. and a negative electrode cover plate.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 3, an embodiment of the present utility model provides a negative electrode switching structure including: a negative electrode adapter plate 100 and a connector 200.
The negative electrode adapter plate 100 is provided with a first surface 101 and a second surface 102 which are oppositely arranged, wherein the first surface 101 is a plane, and the first surface 101 is arranged towards the battery cell 20; and
the connecting piece 200 is protruding on the second surface 102 of the cathode adapter plate 100, and the connecting piece 200 is used for connecting the cathode cover plate 50.
In this embodiment, by optimizing the specific configuration of the negative electrode switching structure 40, the arrangement of the diversion trench on the side of the negative electrode switching structure 40 facing the battery core 20 is avoided, and the heat transfer efficiency and the conductive effect of the negative electrode switching structure 40 are greatly improved.
Specifically, the negative electrode switching structure 40 is configured as a combined member including at least a negative electrode switching plate 100 and a connector 200, the connector 200 is provided on the negative electrode switching plate 100 in a protruding manner, the first surface 101 of the negative electrode switching plate 100 is disposed toward the battery cell 20, and the second surface 102 is disposed toward the negative electrode cover plate 50. Since the first face 101 of the negative electrode adapter plate 100 is a plane, no diversion trench is provided thereon, and the heat transfer effect and the conductive effect of the negative electrode adapter structure 40 are not consumed by the diversion trench, the heat transfer efficiency and the conductive effect of the negative electrode adapter structure 40 are improved. Meanwhile, the negative electrode cover plate 50 is connected through the connecting piece 200, so that the connection tightness of the negative electrode cover plate 50 and the negative electrode adapter plate 100 is improved, and the stability and safety of the negative electrode end part of the lithium ion battery are improved.
In one example, the negative electrode adapter plate 100 has a disc-shaped structure, and the connecting member 200 is a cylindrical boss.
In one possible embodiment, the negative electrode cap plate 50 is provided with a connection protrusion, the negative electrode adapter plate 100 is provided with a connection hole 103, and the connection protrusion is embedded in the connection hole 103 to connect and fasten the negative electrode cap plate 50 and the negative electrode adapter plate 100.
In this embodiment, the specific configuration of the negative electrode adapter plate 100 is optimized to improve the connection tightness of the negative electrode cap plate 50 and the negative electrode adapter plate 100. Specifically, the negative electrode cap 50 is provided with a connection protrusion, and the negative electrode adapter 100 is provided with a connection hole 103, and the negative electrode adapter 100 is connected and fastened to the negative electrode cap 50 through the connection hole 103.
In another example, the negative electrode cover plate 50 is provided with a connection hole 103, the negative electrode adapter plate 100 is provided with a connection protrusion, and the negative electrode adapter plate 100 is connected and fastened with the negative electrode cover plate 50 through the connection protrusion.
In one possible embodiment, the negative electrode adapter plate 100 is further provided with a relief hole 104 and a first groove 105, and the first groove 105 communicates with the periphery of the negative electrode adapter plate 100 and the relief hole 104.
In this embodiment, the specific configuration of the negative electrode adapter plate 100 is further optimized. Specifically, the negative electrode adapter plate 100 is configured as a composite member including at least a connection hole 103, a relief hole 104, and a first groove 105, the relief hole 104 and the connection hole 103 are arranged at intervals, and the relief hole 104 and the connection hole 103 are arranged along the circumferential direction of the connector 200; the first groove 105 is connected to the outer side of the avoidance hole 104, so as to communicate the avoidance hole 104 with the periphery of the negative electrode adapter plate 100.
Thus, the electrolyte flowing into the cathode switching structure 40 from the cell 20 can be guided into the gap between the cathode switching structure 40 and the lithium ion battery shell 10 for storage through the avoiding hole 104 and the first groove 105; when the internal coiled material of the battery cell 20 is dry and lack of liquid, the electrolyte stored in the gap between the negative electrode switching structure 40 and the casing 10 can sequentially pass through the first groove 105 and the avoiding hole 104, enter the internal coiled material of the battery cell 20, and infiltrate the coiled material of the battery cell 20.
It should be appreciated that the first recess 105 is disposed on the second face 102.
In a possible embodiment, the negative electrode adapter plate 100 is further provided with a second groove 106, and the second groove 106 communicates with the periphery of the negative electrode adapter plate 100 and the connection hole 103.
In this embodiment, the specific configuration of the negative electrode adapter plate 100 is further optimized. Specifically, the negative electrode adapter plate 100 is configured as a composite member including at least a connection hole 103, a relief hole 104, a first groove 105, and a second groove 106, and the second groove 106 is connected to the outside of the connection hole 103 so as to communicate the connection hole 103 with the periphery of the negative electrode adapter plate 100.
Thus, the electrolyte flowing into the cathode switching structure 40 from the cell 20 can be introduced into the gap between the cathode switching structure 40 and the lithium ion battery case 10 for storage through the connection hole 103 and the second groove 106; when the internal coiled material of the battery cell 20 is dry and lack of electrolyte, the electrolyte stored in the gap between the negative electrode switching structure 40 and the casing 10 can sequentially pass through the second groove 106 and the connecting hole 103, enter the internal coiled material of the battery cell 20, and infiltrate the coiled material of the battery cell 20.
It should be appreciated that the second recess 106 is disposed on the second face 102.
In one possible embodiment, the relief aperture 104 is any one of a circle, oval, sector, square, rectangle, diamond, or irregular polygon.
In this embodiment, the specific shape of the relief hole 104 is optimized. It should be appreciated that the shape of the relief holes 104 is not limited to circular, elliptical, fan-shaped, square, rectangular, diamond-shaped, or irregular polygonal.
In one example, the relief hole 104 is fan-shaped and the connection hole 103 is circular.
In a possible embodiment, the plurality of connecting holes 103 are provided, the plurality of second grooves 106 are provided, and one connecting hole 103 corresponds to at least one second groove 106; the avoidance holes 104 are provided with a plurality of first grooves 105, one avoidance hole 104 at least corresponds to one first groove 105, and the connecting holes 103 and the avoidance holes 104 are arranged in a crossing manner.
In this embodiment, the specific configuration of the negative electrode adapter plate 100 is further optimized. Specifically, the negative electrode adapter plate 100 is provided with a plurality of connection holes 103, a plurality of second grooves 106, a plurality of avoiding holes 104, and a plurality of first grooves 105, so as to improve the flow effect of the electrolyte at the end portion of the negative electrode.
In an example, the number of the connecting holes 103 is two, the number of the second grooves 106 is two, the number of the avoiding holes 104 is two, and the number of the first grooves 105 is two. The two connecting holes 103 are oppositely arranged at two sides of the connecting piece 200, the two avoiding holes 104 are oppositely arranged at two sides of the connecting piece 200, and the connecting hole 103 and the avoiding hole 104 are distributed in a crossed manner along the circumferential direction of the connecting piece 200. A second groove 106 is correspondingly arranged in one connecting hole 103, and a first groove 105 is correspondingly arranged in one avoiding hole 104.
Of course, in other embodiments, one connecting hole 103 may further be provided with two or more second grooves 106, and one avoiding hole 104 may further be provided with two or more first grooves 105.
In one possible embodiment, the negative electrode cover plate 50 is provided with a connection through hole, the connector 200 includes a first connection boss 210 and a second connection boss 220, the first connection boss 210 is disposed on the negative electrode adapter plate 100, the second connection boss 220 is disposed on a side of the first connection boss 210 away from the negative electrode adapter plate 100, and the negative electrode cover plate 50 is connected to the first connection boss 210 through the connection through hole.
In this embodiment, the specific configuration of the connector 200 is optimized. Specifically, the connector 200 is configured as a combined member including at least a first connection boss 210 and a second connection boss 220, and the negative electrode cap plate 50 is sleeved on the first connection boss 210, and the second boss protrudes from the negative electrode cap plate 50.
In an example, the second connection boss 220 is disposed coaxially with the first connection boss 210, and a radial dimension of the second connection boss 220 is smaller than a radial dimension of the first connection boss 210 to form a multi-layered cylindrical boss structure.
In a possible embodiment, the negative electrode adapter plate 100 is further provided with a third groove 107, where the third groove 107 is located on the first surface 101, and the third groove 107 is disposed opposite to the connecting member 200.
In this embodiment, the specific configuration of the negative electrode adapter plate 100 is further optimized. Specifically, the negative electrode adapter plate 100 is configured as a member including at least a third groove 107, and the third groove 107 is configured on the second plane for accommodating at least part of the central tube of the cell 20. Thus, the shaking, moving and misplacement of the central tube are limited in the radial direction of the battery core 20, and the assembly stability of the lithium ion battery is improved.
In one possible embodiment, the negative electrode adapter plate 100 is integrally formed with the connector 200.
In this embodiment, in order to simplify the process and improve the production efficiency, the negative electrode connecting plate and the connecting member 200 are integrally formed. Of course, in other embodiments, the negative electrode adapter plate 100 and the connecting member 200 may be separately manufactured and then connected together by laser welding or other connection methods.
Referring to fig. 2 and 3, in a second aspect, the present utility model also provides a lithium ion battery including: casing 10, electric core 20, positive pole apron subassembly 30, negative pole switching structure 40 and negative pole apron 50.
A housing 10 having a first opening and a second opening disposed opposite to each other;
the battery cell 20 is arranged in the shell 10;
the positive electrode cover plate assembly 30 covers the first opening of the casing 10;
the negative electrode switching structure 40 is arranged in the second opening of the shell 10, and the negative electrode switching structure 40 is electrically connected to the negative electrode tab of the battery cell 20; and
the negative electrode cover plate 50 is connected to the negative electrode adapting structure 40 and covers the second opening of the casing 10.
In this embodiment, in order to simplify the production process of the lithium ion battery, the heat transfer efficiency and the conductive effect of the lithium ion battery are improved, and the specific configuration of the lithium ion battery is optimized. Specifically, the lithium ion battery is configured as a combined member including at least a case 10, a battery cell 20, a positive electrode cover plate assembly 30, a negative electrode switching structure 40, and a negative electrode cover plate 50, wherein the battery cell 20 is disposed in the case 10, the positive electrode cover plate assembly 30 is disposed in a first opening of the case 10, the negative electrode switching structure 40 is disposed in a second opening of the case 10 and electrically connected to a negative electrode tab of the battery cell 20, and the negative electrode cover plate 50 is disposed on a connector 200 of the negative electrode switching structure 40 and covers the second opening of the case 10. Thus, the assembly of the lithium ion battery is realized. Because the side of the negative electrode switching structure 40 facing the battery core 20 is a plane, no diversion trench is arranged on the side, and the heat transfer effect and the conduction effect of the negative electrode switching structure 40 are not consumed by the diversion trench, so that the heat transfer efficiency and the conduction effect of the negative electrode switching structure 40 are improved.
The flow path of the electrolyte at the negative electrode end of the lithium ion battery is as follows: electrolyte flowing out of the cell 20 sequentially passes through the avoidance hole 104 and the first groove 105 of the negative electrode switching structure 40 or passes through the connection hole 103 and the second groove 106 of the negative electrode switching structure 40 to enter a gap between the negative electrode switching structure 40 and the casing 10. When the internal coiled material of the battery cell 20 is dried, the electrolyte stored in the gap between the negative electrode switching structure 40 and the casing 10 can enter the internal coiled material of the battery cell 20 through the second groove 106 and the connecting hole 103, or the electrolyte stored in the gap between the negative electrode switching structure 40 and the casing 10 can enter the internal coiled material of the battery cell 20 through the first groove 105 and the avoiding hole 104, so that the infiltration of the internal coiled material of the battery cell 20 is realized.
In addition, referring to the above embodiments, the specific structure of the anode switching structure 40 provided in the embodiment of the present utility model adopts all the technical solutions of all the embodiments, so at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A negative electrode switching structure, comprising:
the negative electrode adapter plate is provided with a first surface and a second surface which are oppositely arranged, the first surface is a plane, and the first surface faces towards the battery cell; and
the connecting piece is arranged on the second surface of the negative electrode adapter plate in a protruding mode and is used for connecting the negative electrode cover plate.
2. The negative electrode switching structure according to claim 1, wherein a connection protrusion is provided on the negative electrode cover plate, a connection hole is provided on the negative electrode switching plate, and the connection protrusion is engaged with the connection hole to connect and fasten the negative electrode cover plate and the negative electrode switching plate.
3. The negative electrode switching structure according to claim 2, wherein the negative electrode switching plate is further provided with an avoidance hole and a first groove, and the first groove is communicated with the periphery of the negative electrode switching plate and the avoidance hole.
4. The negative electrode transfer structure of claim 3, wherein the negative electrode transfer plate is further provided with a second groove, and the second groove communicates with the periphery of the negative electrode transfer plate and the connection hole.
5. The negative electrode switching structure according to claim 3, wherein the avoiding hole is any one of a circle, an ellipse, a sector, a square, a rectangle, a diamond, or an irregular polygon.
6. The negative electrode switching structure according to claim 4, wherein a plurality of the connection holes are provided, a plurality of the second grooves are provided, and one of the connection holes corresponds to at least one of the second grooves; the avoidance holes are formed in a plurality of grooves, one of the avoidance holes at least corresponds to one of the first grooves, and the connecting holes and the avoidance holes are arranged in a crossing mode.
7. The negative electrode switching structure according to claim 1, wherein the negative electrode cover plate is provided with a connection through hole, the connecting piece comprises a first connecting boss and a second connecting boss, the first connecting boss is arranged on the negative electrode switching plate, the second connecting boss is arranged on one side, away from the negative electrode switching plate, of the first connecting boss, and the negative electrode cover plate is connected to the first connecting boss through the connection through hole.
8. The negative electrode switching structure according to claim 1, wherein a third groove is further formed in the negative electrode switching plate, the third groove is located on the first face, and the third groove is disposed opposite to the connecting piece.
9. The negative electrode transfer structure of claim 1, wherein the negative electrode transfer plate is integrally formed with the connecting member.
10. A lithium ion battery, comprising:
a housing having a first opening and a second opening disposed opposite to each other;
the battery cell is arranged in the shell;
the positive electrode cover plate component is covered on the first opening of the shell;
the negative electrode switching structure according to any one of claims 1 to 9, disposed in the second opening of the housing, the negative electrode switching structure being electrically connected to the negative electrode tab of the battery cell; and
the negative electrode cover plate is connected to the negative electrode switching structure and covers the second opening of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321339830.8U CN219998443U (en) | 2023-05-29 | 2023-05-29 | Negative electrode switching structure and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321339830.8U CN219998443U (en) | 2023-05-29 | 2023-05-29 | Negative electrode switching structure and lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219998443U true CN219998443U (en) | 2023-11-10 |
Family
ID=88608158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321339830.8U Active CN219998443U (en) | 2023-05-29 | 2023-05-29 | Negative electrode switching structure and lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219998443U (en) |
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2023
- 2023-05-29 CN CN202321339830.8U patent/CN219998443U/en active Active
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