CN216928675U - Battery with a battery cell - Google Patents
Battery with a battery cell Download PDFInfo
- Publication number
- CN216928675U CN216928675U CN202220709455.0U CN202220709455U CN216928675U CN 216928675 U CN216928675 U CN 216928675U CN 202220709455 U CN202220709455 U CN 202220709455U CN 216928675 U CN216928675 U CN 216928675U
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- Prior art keywords
- positive
- coating
- avoidance groove
- positive electrode
- groove
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- 239000011248 coating agent Substances 0.000 claims abstract description 93
- 238000000576 coating method Methods 0.000 claims abstract description 93
- 238000003466 welding Methods 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims description 36
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000002360 preparation method Methods 0.000 abstract description 6
- 239000002390 adhesive tape Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000001556 precipitation 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Secondary Cells (AREA)
Abstract
The application provides a roll core and battery, wherein, roll up the core and include: the positive plate, the diaphragm and the negative plate are wound; the positive plate comprises a positive current collector, a positive active coating and a positive tab; the positive active coating comprises a coating main part and a coating residual part, wherein the coating main part is provided with a lug through groove which is adjacent to the coating residual part; the positive pole lug comprises a welding part and a redundant part, the welding part is positioned in the pole lug through groove, and the redundant part is abutted to the coating residual part. Through the mode of reserving the coating residual part on the positive plate, the preparation process of the positive plate is simplified, the manufacturing efficiency of the positive plate is improved, and the manufacturing efficiency of the battery is further improved.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery.
Background
With the continuous development of battery technology, the market puts higher requirements on the energy density, the quick charge capacity and the charge-discharge rate of the lithium ion battery.
At present, the mode of arranging lugs in the middle is mostly adopted to reduce the internal resistance of a battery core, reduce the polarization of the battery and optimize the current density distribution of the battery in the charging and discharging process; the mode of the lug middle arrangement needs to clean the active coating paste on the current collector so as to expose the current collector in the cleaned area, and the exposed current collector is used for welding an external lug.
The exposed edge of the current collector can have residual active paste due to the influence of errors of a cleaning process, and before an external tab is welded with the exposed current collector, the current collector where the residual active paste is located is cut in the prior art so as to avoid adverse effects caused by the residual active paste, wherein the residual active paste is different in size, so that the cutting operation efficiency is low; that is, the lithium ion battery of the prior art has low manufacturing efficiency.
Disclosure of Invention
The application aims to provide a battery, which is used for solving the problem of low manufacturing efficiency of the lithium ion battery in the prior art.
In a first aspect, an embodiment of the present application provides a battery, including:
the separator is positioned between the positive plate and the negative plate;
the positive plate comprises a positive current collector, a positive active coating which is paved on the positive current collector, and a positive tab which is arranged on the positive current collector;
the positive active coating comprises a coating main part and a coating residual part extending from the coating main part, wherein a tab through groove is formed in the coating main part and is adjacent to the coating residual part; the positive pole lug comprises a welding part and a redundant part extending out of the welding part, the welding part is located in the pole lug through groove, and the redundant part is abutted to the coating residual part.
Optionally, an avoidance groove is formed in the negative plate, and an orthographic projection of the coating residual part on the negative plate is located in the avoidance groove.
Optionally, the depth of the avoidance groove is greater than or equal to the thickness of the positive electrode tab.
Optionally, the negative electrode tab comprises a first subsection and a second subsection, two opposite sides of a positive electrode tab section are respectively contacted with the first subsection and the second subsection, and the positive electrode tab section is a positive electrode tab portion where the positive electrode tab is located;
the avoidance groove comprises a first sub avoidance groove arranged on the first subsection and a second sub avoidance groove arranged on the second subsection, the coating residual part is located in the first sub avoidance groove, the orthographic projection of the coating residual part on the second subsection is located in the second sub avoidance groove, and the sum of the depth of the first sub avoidance groove and the depth of the second sub avoidance groove is larger than or equal to the thickness of the positive pole lug.
Optionally, the positive electrode tab is provided with an insulating adhesive tape, and the depth of the avoidance groove is greater than or equal to the sum of the thickness of the positive electrode tab and the thickness of the insulating adhesive tape.
Optionally, the orthographic projection of the avoidance slot on the positive plate is located in the insulating gummed paper.
Optionally, the length of the avoidance groove in the winding direction is greater than the length of the coating residual portion in the winding direction.
Optionally, a difference between a length of the avoidance groove in the winding direction and a length of the coating residual portion in the winding direction is greater than or equal to 3 mm and less than or equal to 5 mm.
Optionally, the width of the avoidance groove is greater than the width of the coating residual portion in the winding direction.
Optionally, a difference between a width of the avoidance groove and a width of the coating residual portion in the winding direction is greater than or equal to 3 mm and less than or equal to 5 mm.
The technical scheme has the following advantages or beneficial effects:
according to the battery provided by the embodiment of the application, the preparation flow of the positive plate is simplified in a mode of reserving the coating residual part on the positive plate, the manufacturing efficiency of the positive plate is improved, and the manufacturing efficiency of the battery is further improved.
Drawings
FIG. 1 is a schematic structural diagram of a winding core provided in an embodiment of the present application;
fig. 2 is one of schematic structural diagrams of a positive electrode plate provided in an embodiment of the present application;
fig. 3 is a second schematic structural diagram of a positive electrode plate provided in the embodiment of the present application;
fig. 4 is a schematic structural diagram of a positive electrode substrate provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of another winding core provided in the embodiment of the present application.
Detailed Description
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, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The battery that this application embodiment provided includes electrolyte, package can and rolls up the core, electrolyte soaks roll up the core, it is located to roll up the core in the airtight cavity that package can enclose.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a core according to an embodiment of the present application, where the core is as shown in fig. 1, and the core includes:
the separator comprises a positive plate, a separator 20 and a negative plate which are arranged in a winding mode, wherein the separator 20 is located between the positive plate and the negative plate;
the positive plate comprises a positive current collector 11, a positive active coating 12 which is paved on the positive current collector 11, and a positive tab 13 which is arranged on the positive current collector 11;
the positive active coating 12 includes a main coating portion 121, and a coating residual portion 122 extending from the main coating portion 121, the main coating portion 121 being provided with a tab through groove 123, the tab through groove 123 being adjacent to the coating residual portion 122; the positive electrode tab 13 includes a welded portion located in the tab through groove 123 and a redundant portion extending from the welded portion, and the redundant portion abuts against the coating residual portion 122.
Wherein, roll up core accessible take-up device and make after coiling positive plate, diaphragm 20 and negative plate, in some embodiments, take-up device includes book needle, anodal ejection of compact spare, negative pole ejection of compact spare and diaphragm 20 ejection of compact spare, anodal ejection of compact spare is used for pulling positive plate to book needle department, negative pole ejection of compact spare is used for pulling negative plate to book needle department, diaphragm 20 ejection of compact spare is used for pulling diaphragm 20 to book needle department, it is used for driving positive plate, negative plate and diaphragm 20 to rotate around a roll needle axis to accomplish the coiling of positive plate, negative plate and diaphragm 20, at the coiling in-process, diaphragm 20 is in between positive plate and the negative plate all the time (positive plate and negative plate are separated by diaphragm 20 promptly).
As shown in fig. 2 and 3, the tab through groove 123 may be understood as a groove formed after the positive active coating 12 on the positive plate (without welding the positive tab 13) is cleaned, the positive current collector 11 in the groove is exposed (i.e. the depth of the tab through groove 123 is the same as the thickness of the positive active coating 12), and the positive tab 13 is welded to the exposed positive current collector 11 in the groove.
For example, the process for preparing the positive electrode sheet (without welding the positive electrode tab 13) may be:
and arranging a positive active coating 12 on the positive substrate, cleaning the positive active coating 12 in the target area through cleaning equipment to enable the positive substrate in the target area to be in an exposed state (namely, to form the lug through groove 123), and then cutting the cleaned positive substrate to obtain the positive plate (without welding the positive lug 13).
Fig. 4 shows the positive electrode substrate after the positive electrode active coating 12 is cleaned by the cleaning device, and after the cleaning is completed, the positive electrode substrate is cut along the dotted line in fig. 4, so as to complete the slitting operation of the positive electrode substrate, wherein the positive electrode substrate can be understood as the positive electrode current collector 11, and the target area can be understood as the area preset on the positive electrode substrate for welding the positive electrode tab 13.
It should be noted that, under the influence of the operation error during slitting, a small amount of the positive electrode active coating 12 remains at the edge of the positive electrode sheet (to which the positive electrode tab 13 is not welded) obtained by the slitting operation, and this portion of the remaining positive electrode active coating 12 is also referred to as the coating remaining portion 122. In this application embodiment, after obtaining the positive plate (of not welding anodal utmost point ear 13) through cutting operation, can directly weld anodal utmost point ear 13 on the exposed anodal mass flow body 11 in utmost point ear logical groove 123 to simplify the preparation flow of positive plate (also remove the step of tailorring anodal mass flow body 11 that coating residual part 122 belongs to promptly), promote the preparation efficiency of positive plate, and then promote the preparation efficiency of battery.
The positive electrode tab 13 comprises a welding part, a redundant part extending from the welding part, and an overhang part extending from the redundant part; the welding part is understood as a part of the positive electrode tab 13 which is positioned in the tab through groove 123 and is welded with the positive electrode current collector 11 exposed in the tab through groove 123; the redundant portion is understood to be the portion of the positive electrode tab 13 that is in contact with the coating remnant 122; the overhang is understood to be the portion of the positive electrode tab 13 that protrudes beyond the positive electrode current collector 11.
It should be noted that, the shape and size of the tab through slot 123 can be adaptively adjusted based on actual requirements to fully accommodate the welding portion of the positive electrode tab 13, and the specific shape and size of the tab through slot 123 are not limited in the embodiment of the present application.
Optionally, an avoiding groove 33 is formed in the negative electrode plate, and an orthographic projection of the coating residual part 122 on the negative electrode plate is located in the avoiding groove 33.
As shown in fig. 1, in the thickness direction of the positive electrode sheet, the area where the coating residue portion 122 is located has a problem of excessive thickness compared with other areas of the positive electrode sheet, and in order to avoid the problem that the flatness of the winding core in the thickness direction is affected by the problem of excessive thickness of the area where the coating residue portion 122 is located, an avoidance groove 33 is correspondingly arranged on the negative electrode sheet so as to avoid an excessive thickness portion of the area where the coating residue portion 122 is located, thereby ensuring the flatness of the winding core in the thickness direction, so that the formed winding core has excellent aesthetic property and high energy density, and the battery prepared based on the winding core also has high energy density.
As described above, in the battery provided in the embodiment of the present application, the manner of retaining the coating residual portion 122 on the positive electrode sheet is used to simplify the preparation process of the positive electrode sheet, and improve the manufacturing efficiency of the positive electrode sheet, on the basis, the arrangement of the avoidance groove 33 on the negative electrode sheet is used to avoid the overlapping area between the coating residual portion 122 and the positive electrode tab 13, so that the formed roll core maintains a good flatness in the thickness direction.
Optionally, the depth of the avoidance groove 33 is greater than or equal to the thickness of the positive electrode tab 13.
As described above, for the area where the coating residual part 122 is located, the extra thickness of the area is the thickness of the positive electrode tab 13, and the depth of the avoiding groove 33 is limited to be greater than or equal to the thickness of the positive electrode tab 13, so that the extra thickness of the area where the coating residual part 122 is located can be fully compensated by the arrangement of the avoiding groove 33, and the flatness of the formed roll core in the thickness direction can be further improved.
Optionally, the negative electrode tab comprises a first subsection and a second subsection, two opposite sides of the positive electrode tab section are respectively contacted with the first subsection and the second subsection, and the positive electrode tab section is a positive electrode tab portion where the positive electrode tab 13 is located;
the avoidance groove 33 comprises a first sub avoidance groove 331 arranged on the first subsection and a second sub avoidance groove 332 arranged on the second subsection, an orthographic projection of the coating residual part 122 on the first subsection is located in the first sub avoidance groove 331, an orthographic projection of the coating residual part 122 on the second subsection is located in the second sub avoidance groove 332, and the sum of the depth of the first sub avoidance groove 331 and the depth of the second sub avoidance groove 332 is greater than or equal to the thickness of the positive electrode tab 13.
The negative pole piece includes negative pole mass flow body 31 and paves in negative pole active coating 32 on the negative pole mass flow body 31, it sets up to dodge groove 33 on the negative pole active coating 32, the degree of depth that dodges groove 33 is less than or equal to the thickness of negative pole active coating 32.
The first subsection and the second subsection can be understood as two subsections formed by bending the negative plate, and the positive electrode tab 13 is clamped between the two subsections, that is, the first subsection and the second subsection are respectively abutted with two opposite surfaces of the part where the positive electrode tab 13 is located (through the diaphragm 20).
In some embodiments, if the thickness of the anode active coating 32 is greater than or equal to the thickness of the cathode tab 13, the avoidance groove 33 may be understood as being opened on the anode active coating 32 of the first sub-segment or the second sub-segment.
In some embodiments, as shown in fig. 5, if the thickness of the negative active coating 32 is smaller than the thickness of the positive electrode tab 13, the first sub-avoiding groove 331 is formed in the negative active coating 32 of the first sub-section, the second sub-avoiding groove 332 is formed in the negative active coating 32 of the second sub-section, and the sum of the depth of the first sub-avoiding groove 331 and the depth of the second sub-avoiding groove 332 is greater than or equal to the thickness of the positive electrode tab 13, so as to satisfy the limit condition that the depth of the avoiding groove 33 is greater than or equal to the thickness of the positive electrode tab 13, and ensure that the formed roll core can maintain excellent flatness in the thickness direction, that is, a battery prepared based on the roll core can maintain excellent flatness in the thickness direction.
It should be noted that the depth of the first sub avoiding groove 331 and the depth of the second sub avoiding groove 332 may be the same or different; the shape of the first sub-avoidance groove 331 and the shape of the second sub-avoidance groove 332 may be the same or different, and the depth, the shape, and the like of the first sub-avoidance groove 331 and the second sub-avoidance groove 332 are not limited in the embodiment of the present application.
Optionally, the positive electrode tab 13 is provided with an insulating adhesive tape, and the depth of the avoidance groove 33 is greater than or equal to the sum of the thickness of the positive electrode tab 13 and the thickness of the insulating adhesive tape.
As described above, after the positive electrode tab 13 is welded on the positive electrode current collector 11, burrs may exist in a welding area between the positive electrode tab 13 and the positive electrode current collector 11, and in order to avoid short circuit risks caused by the burrs, the positive electrode tab 13 is correspondingly provided with the insulating adhesive paper so as to cover the welding area between the positive electrode tab 13 and the positive electrode current collector 11, thereby improving the use safety of the battery manufactured by the winding core and the winding core.
In practical application, the insulating adhesive tape covers both the welding part and the redundant part of the positive electrode tab 13, so that the extra thickness of the area where the coating residual part 122 is located is the sum of the thickness of the positive electrode tab 13 and the thickness of the insulating adhesive tape, and in this case, the depth of the avoiding groove 33 is limited to be greater than or equal to the sum of the thickness of the positive electrode tab 13 and the thickness of the insulating adhesive tape, so that the formed winding core can keep excellent flatness in the thickness direction.
Optionally, the orthographic projection of the avoiding groove 33 on the positive plate is located in the insulating adhesive paper.
As described above, the arrangement of the avoiding groove 33 can cause the lithium ion embedding capacity of the negative plate in the region where the avoiding groove 33 is located to be reduced, in this case, the orthographic projection of the avoiding groove 33 on the positive plate is located in the insulating adhesive tape by limiting, so that the negative plate region where the avoiding groove 33 is located and the positive plate are isolated by the insulating adhesive tape, the lithium ions separated from the positive plate are prevented from dissociating to the negative plate region where the avoiding groove 33 is located, the lithium precipitation risk of the negative electrode is reduced, the use safety of the winding core and the battery prepared according to the winding core is improved, and the battery can still keep higher energy density after multiple charging and discharging cycles.
Optionally, the length of the avoidance groove 33 in the winding direction is greater than the length of the coating residual portion 122 in the winding direction.
As described above, the length of the avoiding groove 33 is limited to be greater than the length of the coating residual part 122, so that the avoiding groove 33 can fully avoid the excessive thickness of the area where the coating residual part 122 is located, and the formed winding core can keep excellent flatness in the thickness direction.
It should be noted that the longitudinal direction of the avoidance groove 33, and the longitudinal direction of the coating residual part 122 can be understood as the direction indicated by the double-headed arrow in fig. 2.
Further, the difference between the length of the avoidance groove 33 in the winding direction and the length of the coating residual portion 122 in the winding direction is greater than or equal to 3 mm and less than or equal to 5 mm.
As described above, the difference between the length of the avoidance groove 33 and the length of the coating residual part 122 is limited to be greater than 3 mm, so as to adapt to process errors possibly existing in the actual manufacturing process, and ensure that the avoidance groove 33 can sufficiently avoid the excess thickness of the region where the coating residual part 122 is located; the reason for limiting the difference between the length of the avoidance groove 33 and the length of the coating residual part 122 to less than 5 mm is to adaptively reduce the space occupation of the avoidance groove 33, so that the winding core and the battery manufactured by the winding core can maintain a high energy density.
Optionally, the width of the avoidance groove 33 is larger than the width of the coating residual part 122 in the winding direction.
As described above, by limiting the width of the avoiding groove 33 to be larger than the width of the coating residual part 122, the avoiding groove 33 can be ensured to fully avoid the excessive thickness of the area where the coating residual part 122 is located, and the formed winding core can be ensured to keep excellent flatness in the thickness direction.
Note that the width direction of the avoidance groove 33, and the width direction of the coating residual portion 122 can be understood as the directions indicated by the double-headed arrows in fig. 3.
Further, the difference between the width of the avoidance groove 33 and the width of the coating residual portion 122 in the winding direction is greater than or equal to 3 mm, and less than or equal to 5 mm.
As described above, the difference between the width of the avoidance groove 33 and the width of the coating residual part 122 is limited to be greater than 3 mm, so as to adapt to process errors possibly existing in the actual manufacturing process, and ensure that the avoidance groove 33 can sufficiently avoid the excess thickness of the region where the coating residual part 122 is located; the reason why the difference between the width of the escape groove 33 and the width of the coating residual part 122 is less than 5 mm is to adaptively reduce the space occupation of the escape groove 33, so that the winding core and the battery prepared from the winding core can maintain a high energy density.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A battery, comprising:
the separator is positioned between the positive plate and the negative plate;
the positive plate comprises a positive current collector, a positive active coating which is paved on the positive current collector, and a positive tab which is arranged on the positive current collector;
the positive active coating comprises a coating main part and a coating residual part extending from the coating main part, wherein a tab through groove is formed in the coating main part and is adjacent to the coating residual part; the positive pole lug comprises a welding part and a redundant part extending out of the welding part, the welding part is located in the pole lug through groove, and the redundant part is abutted to the coating residual part.
2. The battery according to claim 1, wherein an avoidance groove is formed in the negative electrode sheet, and an orthographic projection of the coating residue on the negative electrode sheet is located in the avoidance groove.
3. The battery of claim 2, wherein the depth of the avoidance groove is greater than or equal to the thickness of the positive electrode tab.
4. The battery according to claim 3, wherein the negative electrode tab comprises a first subsection and a second subsection, opposite sides of a positive electrode tab section are respectively in contact with the first subsection and the second subsection, and the positive electrode tab section is a positive electrode tab portion where the positive electrode tab is located;
the avoidance groove comprises a first sub avoidance groove arranged on the first subsection and a second sub avoidance groove arranged on the second subsection, the coating residual part is located in the first sub avoidance groove, the orthographic projection of the coating residual part on the second subsection is located in the second sub avoidance groove, and the sum of the depth of the first sub avoidance groove and the depth of the second sub avoidance groove is larger than or equal to the thickness of the positive pole lug.
5. The battery according to claim 3, wherein the positive electrode tab is provided with an insulating adhesive paper, and the depth of the avoidance groove is greater than or equal to the sum of the thickness of the positive electrode tab and the thickness of the insulating adhesive paper.
6. The battery of claim 5, wherein an orthographic projection of the avoidance slot on the positive plate is located within the insulating gummed paper.
7. The battery of claim 2, wherein the length of the avoidance groove in the winding direction is greater than the length of the coating residue in the winding direction.
8. The battery according to claim 7, wherein a difference between a length of the avoidance groove in the winding direction and a length of the coating residual portion in the winding direction is greater than or equal to 3 mm and less than or equal to 5 mm.
9. The battery of claim 2, wherein the width of the avoidance groove is greater than the width of the coating residual in the winding direction.
10. The battery according to claim 9, wherein a difference between a width of the avoidance groove and a width of the coating residual portion in the winding direction is greater than or equal to 3 mm and less than or equal to 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220709455.0U CN216928675U (en) | 2022-03-29 | 2022-03-29 | Battery with a battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220709455.0U CN216928675U (en) | 2022-03-29 | 2022-03-29 | Battery with a battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216928675U true CN216928675U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220709455.0U Active CN216928675U (en) | 2022-03-29 | 2022-03-29 | Battery with a battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216928675U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024026618A1 (en) * | 2022-08-01 | 2024-02-08 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
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2022
- 2022-03-29 CN CN202220709455.0U patent/CN216928675U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024026618A1 (en) * | 2022-08-01 | 2024-02-08 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
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