CN219696673U - Connection piece for multi-section type battery cell and lithium battery - Google Patents
Connection piece for multi-section type battery cell and lithium battery Download PDFInfo
- Publication number
- CN219696673U CN219696673U CN202320989241.8U CN202320989241U CN219696673U CN 219696673 U CN219696673 U CN 219696673U CN 202320989241 U CN202320989241 U CN 202320989241U CN 219696673 U CN219696673 U CN 219696673U
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- Prior art keywords
- welding
- connecting sheet
- welding plate
- polar
- battery cell
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 82
- 210000004027 cell Anatomy 0.000 claims description 48
- 210000005056 cell body Anatomy 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a connecting sheet for a multi-section type battery cell and a lithium battery, wherein the connecting sheet for the multi-section type battery cell comprises: a first polarity connection pad and a second polarity connection pad; the first polarity connecting sheet comprises a first welding plate and a plurality of first welding strips; the plurality of first welding strips are fixedly connected with the first welding plate; the second polar connecting sheet comprises a second welding plate and a plurality of second welding strips; the plurality of second welding strips are fixedly connected with the first welding plate; the first welding strips are in one-to-one correspondence with the second welding strips and are arranged in a stacked mode. Through overlapping first polarity connection piece and second polarity connection piece setting, reduce the connection piece and the utmost point post quantity of a plurality of electric cores to reduce the butt joint time and the holistic welding time of connection piece, and then reduced the industrialization degree of difficulty.
Description
Technical Field
The utility model relates to the field of lithium batteries, in particular to a connecting sheet for a multi-section type battery cell and a lithium battery.
Background
The manufacturing of the bare cell is generally divided into lamination technology and winding technology, and the lamination technology is realized by winding the bare cell due to lower efficiency, but is limited by the defects of the existing winding technology, when the bare cell is wider, the alignment degree of positive and negative poles in the battery cell cannot be ensured, so that a diaphragm cannot insulate the positive and negative poles and the risk of internal short circuit exists, infinite widening of the bare cell cannot be realized, and the heat dissipation capacity of the battery cell can be deteriorated when the thickness is increased.
Therefore, it is necessary to design a large-capacity battery cell capable of infinitely widening a bare cell, and since the large-capacity battery cell is composed of a plurality of core packages, the number of connecting pieces is too large, and the number of poles on each connecting piece is too large, so that the complexity of the whole process is improved, and the production efficiency is lowered due to the too large number of connecting pieces and poles.
The above problems are currently in need of solution.
Disclosure of Invention
The utility model aims to provide a connecting sheet for a multi-section type battery cell and a lithium battery, so that the number of connecting sheets and polar posts of a high-capacity battery cell is reduced.
In order to solve the technical problems, the present utility model provides a connection piece for a multi-section type battery cell, comprising:
a first polarity connection pad and a second polarity connection pad;
the first polarity connecting sheet comprises a first welding plate and a plurality of first welding strips;
the plurality of first welding strips are fixedly connected with the first welding plate;
the second polar connecting sheet comprises a second welding plate and a plurality of second welding strips;
the plurality of second welding strips are fixedly connected with the first welding plate;
the first welding strips are in one-to-one correspondence with the second welding strips and are arranged in a stacked mode.
Further, the first polarity connection pad is arranged above the second polarity connection pad.
Further, the second welding plate is provided with a first protrusion;
the height of the top surface of the first protrusion is the same as the height of the first welding plate.
Further, the first welding plate and the first protrusion are respectively welded with a first pole and a second pole.
Further, the first polarity connection pad is arranged below the second polarity connection pad.
Further, the first welding plate is provided with a second protrusion;
the height of the top surface of the second protrusion is the same as the height of the second welding plate.
Further, the second welding plate and the second protrusion are respectively welded with a first pole and a second pole.
Further, a first insulating layer is arranged at the overlapping part of the first polar connecting sheet and the second polar connecting sheet.
The utility model provides a lithium battery, which comprises a top cover, a shell and a multi-section type battery cell, wherein the top cover is provided with a plurality of battery cells;
the multi-section type battery cell is arranged in the shell;
the top cover is covered on the shell;
the top cover is provided with at least one explosion-proof valve and a liquid injection hole;
the multi-section type battery cell comprises a battery cell body and the connecting sheet for the multi-section type battery cell;
the battery cell body consists of a plurality of core bags;
the connection piece for the multi-section type battery cell is suitable for connecting the lugs of the plurality of core packages.
Further, a plurality of the core packs are arranged in an array along the width and/or thickness direction of the core pack.
Further, the first lug and the second lug of the core pack are -shaped;
the first polar connecting sheet is welded on the top surface of the first tab;
the second polar connecting sheet is welded in the groove of the second lug;
a second insulating layer is arranged at the superposition position of the first polar connecting sheet and the second polar lug;
and a third insulating layer is arranged at the overlapping part of the second polar connecting sheet and the first polar lug.
The utility model has the beneficial effects that the utility model provides a connecting sheet for a multi-section type battery cell and a lithium battery, wherein the connecting sheet for the multi-section type battery cell comprises: a first polarity connection pad and a second polarity connection pad; the first polarity connecting sheet comprises a first welding plate and a plurality of first welding strips; the plurality of first welding strips are fixedly connected with the first welding plate; the second polar connecting sheet comprises a second welding plate and a plurality of second welding strips; the plurality of second welding strips are fixedly connected with the first welding plate; the first welding strips are in one-to-one correspondence with the second welding strips and are arranged in a stacked mode. Through overlapping first polarity connection piece and second polarity connection piece setting, reduce the connection piece and the utmost point post quantity of a plurality of electric cores to reduce the butt joint time and the holistic welding time of connection piece, and then reduced the industrialization degree of difficulty.
Drawings
The utility model will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a connection piece for a multi-segment battery cell according to an embodiment of the present utility model.
Fig. 2 is an exploded view of a lithium battery provided in an embodiment of the present utility model.
In the figure: 100. a first polarity connection pad; 110. a first welding plate; 120. a first welding strip; 130. a first pole; 200. a second polarity tab; 210. a second welding plate; 220. a second welding strip; 230. a first protrusion; 240. a second post; 300. a housing; 400. and a top cover.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
Referring to fig. 1, the embodiment provides a connection piece for a multi-stage battery cell, which includes: a first polarity tab 100 and a second polarity tab 200; the first polarity connection pad 100 includes a first welding plate 110 and a plurality of first welding bars 120; a plurality of the first welding bars 120 are fixedly connected with the first welding plate 110; the second polar tab 200 includes a second bonding plate 210 and a plurality of second bonding bars 220; a plurality of the second welding bars 220 are fixedly connected with the first welding plate 110; the first welding bars 120 are in one-to-one correspondence with the second welding bars 220, and are stacked.
In this embodiment, the first polarity tab 100 is disposed above the second polarity tab 200.
Wherein the second welding plate 210 is provided with a first protrusion 230; the height of the top surface of the first protrusion 230 is the same as the height of the first welding plate 110.
In this embodiment, the first welding plate 110 and the first protrusion 230 are respectively welded with a first pole 130 and a second pole 240. Thereby ensuring that the poles are highly uniform during subsequent installation.
In this embodiment, a first insulating layer is disposed at the overlapping position of the first polar connecting sheet 100 and the second polar connecting sheet 200. Thereby avoiding the interference problem of the two parties.
Embodiment 2 provides a multi-stage connecting piece for a battery cell, which has the same structure as that of embodiment 1, except that in this embodiment, the first polarity connecting piece 100 is disposed below the second polarity connecting piece 200.
Wherein the first welding plate 110 is provided with a second protrusion; the height of the top surface of the second bump is the same as the height of the second welding plate 210. The second welding plate 210 and the second protrusion are respectively welded with a first pole 130 and a second pole 240. Thereby ensuring that the poles are highly uniform during subsequent installation.
Embodiment 3 referring to fig. 2, the present embodiment provides a lithium battery, which includes a top cover 400, a housing 300, and a multi-stage battery cell; the multi-section type battery cell is arranged in the shell 300; the top cover 400 covers the shell 300; at least one explosion-proof valve and a liquid injection hole are arranged on the top cover 400; the multi-section type battery cell comprises a battery cell body and connecting sheets for the multi-section type battery cell in the embodiment 1-2; the battery cell body consists of a plurality of core bags; the connection piece for the multi-section type battery cell is suitable for connecting the lugs of the plurality of core packages.
In this embodiment, a plurality of the core packs are arranged in an array along the width and/or thickness direction of the core pack. The battery cell has no upper limit superposition, and compared with the existing scheme, the method has low industrialization difficulty, does not increase production and manufacturing cost, has large battery cell monomer capacity and does not influence electrical performance.
In this embodiment, the polarities of the tabs adjacent to the core pack are the same.
In this embodiment, the first tab and the second tab of the core pack are -shaped; the first polar connecting sheet is welded on the top surface of the first tab; the second polar connecting sheet is welded in the groove of the second lug; a second insulating layer is arranged at the superposition position of the first polar connecting sheet and the second polar lug; and a third insulating layer is arranged at the overlapping part of the second polar connecting sheet and the first polar lug. Thereby avoiding the first polarity tab 100 from contacting the second polarity tab 200 during welding.
In summary, the present utility model provides a connection piece for a multi-stage battery cell and a lithium battery, wherein the connection piece for the multi-stage battery cell includes: a first polarity tab 100 and a second polarity tab 200; the first polarity connection pad 100 includes a first welding plate 110 and a plurality of first welding bars 120; a plurality of the first welding bars 120 are fixedly connected with the first welding plate 110; the second polar tab 200 includes a second bonding plate 210 and a plurality of second bonding bars 220; a plurality of the second welding bars 220 are fixedly connected with the first welding plate 110; the first welding bars 120 are in one-to-one correspondence with the second welding bars 220, and are stacked. Through overlapping the first polarity connection piece 100 and the second polarity connection piece 200, the connection pieces and the pole column numbers of a plurality of battery cells are reduced, so that the butt joint time and the integral welding time of the connection pieces are reduced, and the industrialization difficulty is further reduced.
The components (components not illustrating the specific structure) selected in the present utility model are common standard components or components known to those skilled in the art, and the structures and principles thereof are known to those skilled in the art through technical manuals or through routine experimental methods. Moreover, the software program related to the utility model is the prior art, and the utility model does not relate to any improvement on the software program.
In the description of embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (11)
1. A connection pad for a multi-segment cell, comprising:
a first polarity connection pad and a second polarity connection pad;
the first polarity connecting sheet comprises a first welding plate and a plurality of first welding strips;
the plurality of first welding strips are fixedly connected with the first welding plate;
the second polar connecting sheet comprises a second welding plate and a plurality of second welding strips;
the plurality of second welding strips are fixedly connected with the first welding plate;
the first welding strips are in one-to-one correspondence with the second welding strips and are arranged in a stacked mode.
2. A multi-segment cell connector as defined in claim 1, wherein,
the first polarity connection sheet is arranged above the second polarity connection sheet.
3. A multi-segment cell connector as defined in claim 2 wherein,
the second welding plate is provided with a first bulge;
the height of the top surface of the first protrusion is the same as the height of the first welding plate.
4. A multi-segment cell connector according to claim 3, wherein,
the first welding plate and the first protrusion are respectively welded with a first pole and a second pole.
5. A multi-segment cell connector as defined in claim 1, wherein,
the first polarity connection sheet is arranged below the second polarity connection sheet.
6. The multi-segment cell connecting piece according to claim 4, wherein,
the first welding plate is provided with a second bulge;
the height of the top surface of the second protrusion is the same as the height of the second welding plate.
7. The multi-segment cell connecting piece according to claim 6, wherein,
the second welding plate and the second bulge are respectively welded with a first pole and a second pole.
8. A multi-segment cell connector as defined in claim 1, wherein,
and a first insulating layer is arranged at the overlapping part of the first polar connecting sheet and the second polar connecting sheet.
9. The lithium battery is characterized by comprising a top cover, a shell and a multi-section type battery cell;
the multi-section type battery cell is arranged in the shell;
the top cover is covered on the shell;
the top cover is provided with at least one explosion-proof valve and a liquid injection hole;
the multi-section type battery cell comprises a battery cell body and a connecting sheet for the multi-section type battery cell according to any one of claims 1 to 8;
the battery cell body consists of a plurality of core bags;
the connection piece for the multi-section type battery cell is suitable for connecting the lugs of the plurality of core packages.
10. The lithium battery of claim 9, wherein the battery is configured to provide the battery with a battery power,
the plurality of core packages are arranged in an array along the width and/or thickness direction of the core package.
11. The lithium battery of claim 9, wherein the battery is configured to provide the battery with a battery power,
the first lug and the second lug of the core pack are -shaped;
the first polar connecting sheet is welded on the top surface of the first tab;
the second polar connecting sheet is welded in the groove of the second lug;
a second insulating layer is arranged at the superposition position of the first polar connecting sheet and the second polar lug;
and a third insulating layer is arranged at the overlapping part of the second polar connecting sheet and the first polar lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320989241.8U CN219696673U (en) | 2023-04-27 | 2023-04-27 | Connection piece for multi-section type battery cell and lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320989241.8U CN219696673U (en) | 2023-04-27 | 2023-04-27 | Connection piece for multi-section type battery cell and lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219696673U true CN219696673U (en) | 2023-09-15 |
Family
ID=87970703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320989241.8U Active CN219696673U (en) | 2023-04-27 | 2023-04-27 | Connection piece for multi-section type battery cell and lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219696673U (en) |
-
2023
- 2023-04-27 CN CN202320989241.8U patent/CN219696673U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |