CN220543987U - Laminated battery cell and battery with all-lug separate welding - Google Patents
Laminated battery cell and battery with all-lug separate welding Download PDFInfo
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- CN220543987U CN220543987U CN202322182063.0U CN202322182063U CN220543987U CN 220543987 U CN220543987 U CN 220543987U CN 202322182063 U CN202322182063 U CN 202322182063U CN 220543987 U CN220543987 U CN 220543987U
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- 238000003466 welding Methods 0.000 title claims abstract description 24
- 230000005611 electricity Effects 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 230000010287 polarization Effects 0.000 abstract description 3
- 239000012141 concentrate Substances 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 25
- 230000006866 deterioration Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- 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
-
- 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
Abstract
The utility model relates to a laminated battery cell and a battery with all-lug split welding. The battery cell structure solves the technical problems that the polarization impedance of the battery cell is increased unreasonably due to the arrangement of the existing electrode lugs, heat dissipation is difficult and the like. Including the electric core, the electric core has a plurality of pole piece groups that stack in proper order and set up, and every pole piece group has positive pole piece and the negative pole piece that stack from top to bottom set up, separates through the diaphragm piece between positive pole piece and the negative pole piece and between two adjacent pole piece groups, and positive pole piece one end in the half pole piece group in a plurality of pole piece groups has positive pole tab and positive pole piece one side in the remaining pole piece group is equipped with positive pole tab, and negative pole piece one end in the half pole piece group in a plurality of pole piece groups has negative pole tab and negative pole piece one side in the remaining pole piece group is equipped with negative pole tab. The advantages are that: the device sets up the utmost point ear in electric core head and side respectively, effectively improves the inhomogeneous and problem that heat concentrates of current density, can effectively avoid simultaneously closing the core and take place the utmost point ear and insert when inserting the shell.
Description
Technical Field
The utility model belongs to the technical field of batteries, and particularly relates to a laminated battery cell and a battery with all-tab split welding.
Background
With the rapid development of new energy industry, the requirements of power and energy storage markets on the energy density of the battery core of the lithium ion battery are higher and higher, and under the condition that chemical systems are similar, the capacity of the battery core is improved in an effective way. The current main stream direction in the structure is to develop a laminated battery cell, the energy density is improved by fully utilizing the internal space of the battery cell, the capacity of a single battery cell is usually improved by increasing the size of the bare battery cell or connecting more bare battery cells in parallel in the prior art, but the current battery is formed by connecting the bare battery cells of the single-side tab, so that the battery structure formed by the bare battery cells is single, and meanwhile, the problem of uneven current density and concentrated heat is caused by the layout of the tab.
In order to solve the defects existing in the prior art, long-term exploration is performed, and various solutions are proposed. For example, chinese patent literature discloses a battery cell structure, battery and battery module [202021393319.2], including the electric core body, the electric core body is provided with the utmost point ear that the polarity is different in at least both sides, the utmost point ear is used for with other electric core body parallelly connected.
The scheme solves the problems that the existing battery is single in structure and improves the flexibility of the battery to a certain extent, but the scheme still has a plurality of defects, such as unreasonable arrangement of the electrode lugs, increased polarization impedance of the battery core, difficult heat dissipation and the like.
Disclosure of Invention
The utility model aims to solve the problems and provides a laminated battery cell with all-lug split welding.
Another object of the present utility model is to provide a battery with a laminated cell of all-tab split welding, in view of the above problems.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a lamination electricity core that full utmost point ear divide to weld, includes the electricity core, the electricity core have a plurality of pole groups that overlap in proper order and set up, every pole group has positive pole piece and negative pole piece that overlap from top to bottom and set up, just positive pole piece and negative pole piece between and between two adjacent pole groups separate through the diaphragm piece, positive pole piece one end in the half pole piece group in a plurality of pole groups has positive pole tab and positive pole piece one side in remaining pole piece group is equipped with positive pole tab, negative pole piece one end in the half pole piece group in a plurality of pole pieces group has negative pole tab and negative pole piece one side in remaining pole piece group is equipped with negative pole tab, and the positive pole tab on the positive pole piece and the negative pole piece that lie in same group pole piece group are located pole group both ends or same one side respectively. The pole lugs of the pole piece group are arranged at the head of the pole piece in half, the other half of the pole lugs are arranged at the side edges of the pole pieces, the design is favorable for reducing the number of pole lug layers at a single welding position, the welding problem caused by large capacity and multiple layers of the battery core is effectively avoided, meanwhile, the temperature rise of the pole lugs and the welding position is highest when the battery core body discharges, the dispersion of the welding position is favorable for heat dissipation, the side reaction and performance deterioration caused by high temperature are reduced, and the safety risk is reduced.
In the laminated battery cell welded by all the lugs, the pole piece groups are a first pole piece group and a second pole piece group, and the first pole piece group and the second pole piece group are arranged in a staggered manner from top to bottom; or, the N first pole piece groups which are overlapped up and down in sequence and the M second pole piece groups which are overlapped up and down in sequence are arranged in a staggered and overlapped way, and the number of N and M is respectively more than or equal to 2.
In the laminated battery cell welded by the full tab, the positive electrode tab is divided into a first positive electrode tab and a second positive electrode tab, the negative electrode tab is divided into a first negative electrode tab and a second negative electrode tab, and the negative electrode tab is divided into a first negative electrode tab and a second negative electrode tab. The positive pole piece and the negative pole piece are both provided with two cutting modes, and a first positive pole tab of the first positive pole piece and a first negative pole tab of the first negative pole piece are respectively positioned at two ends of the battery core body, so that the current density is more uniform, and the problem of performance deterioration such as lithium precipitation caused by concentrated current density when the traditional head part is provided with the positive and negative pole tabs is solved.
In the laminated battery cell of the full tab split welding, the first positive electrode tab is arranged at one end of the first positive electrode plate, the second positive electrode tab is arranged at one side of the second positive electrode plate, the first negative electrode tab is arranged at one end of the first negative electrode plate, and the second negative electrode tab is arranged at one side of the second negative electrode plate.
In the laminated battery cell welded by all the lugs, the first positive pole piece and the first negative pole piece are vertically overlapped in the first pole piece group, and the second positive pole piece and the second negative pole piece are vertically overlapped in the second pole piece group.
In the laminated battery cell of the full-tab split welding, the first positive electrode tab in the first pole piece group is located at one end of the first positive electrode tab, the first negative electrode tab is located at one end of the first negative electrode tab far away from the first positive electrode tab, and the first positive electrode tab and the first negative electrode tab are correspondingly arranged at two ends of the first pole piece group.
In the laminated battery cell of the full-tab split welding, the second positive tab in the second tab group is located at one side of the second positive tab, the second negative tab is located at the same side of the second negative tab with the second positive tab, and the second positive tab and the second negative tab are arranged in a staggered manner.
In the laminated battery cell welded by the full tab, the diaphragm piece is in a Z-shaped folding structure from top to bottom, the diaphragm piece is respectively arranged between two adjacent pole piece groups, between the first positive pole piece and the first negative pole piece and between the second positive pole piece and the second negative pole piece, and the width of the diaphragm piece is larger than that of the first positive pole piece, the first negative pole piece, the second positive pole piece and the second negative pole piece. The mode through the lamination is assembled, utilizes the diaphragm piece to realize Z font folding, and this mode compares in the coiling mode can make full use of the inner space of electric core direction aluminum hull, improves energy density, and diaphragm piece turning has avoided bottom diaphragm piece to the extrusion deformation of polar plate simultaneously to influence electric core performance.
In the laminated battery cell of the full-tab split welding, the first positive tabs in the two adjacent first pole piece groups are correspondingly arranged up and down, the first negative tabs in the two adjacent first pole piece groups are correspondingly arranged up and down, the second positive tabs in the two adjacent second pole piece groups are correspondingly arranged up and down, and the second negative tabs in the two adjacent second pole piece groups are correspondingly arranged up and down.
The battery comprises the laminated battery core welded by all lugs.
Compared with the prior art, the utility model has the advantages that:
1. the device sets up the utmost point ear in electric core head and side respectively, effectively improves the inhomogeneous and problem that heat concentrates of current density.
2. The battery cell head lug of the device can be positioned on the same side in the thickness direction and is equivalent to a non-full lug, and the phenomenon that the lug is reversely inserted when the battery cell is put into the shell after the core is closed can be effectively avoided.
3. The device is folded at electric core body width direction Z style of calligraphy through the diaphragm spare, and diaphragm spare turning is located the side, does not receive gravity extrusion, and bottom diaphragm rubberized structure is more stable, can not receive gravity extrusion influence.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a top view of the present utility model.
Fig. 3 is a schematic structural view of a first positive electrode sheet in the present utility model.
Fig. 4 is a schematic structural view of a second positive electrode sheet in the present utility model.
Fig. 5 is a schematic structural view of a first negative electrode tab according to the present utility model.
Fig. 6 is a schematic structural diagram of a second negative electrode tab according to the present utility model.
FIG. 7 is a schematic view of the left side core assembly of the present utility model.
FIG. 8 is a right side core-closing diagram of the present utility model.
In the figure: the battery cell 1, the pole piece group 2, the positive pole piece 3, the positive pole tab 31, the first positive pole piece 32, the second positive pole piece 33, the first positive pole tab 34, the second positive pole tab 35, the negative pole piece 4, the negative pole tab 41, the first negative pole piece 42, the second negative pole piece 43, the first negative pole tab 44, the second negative pole tab 45, the diaphragm piece 5, the first pole piece group 6 and the second pole piece group 7.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1-6, a laminated battery cell of full tab split welding comprises a battery cell body 1, wherein the battery cell body 1 is provided with a plurality of electrode plate groups 2 which are sequentially overlapped, each electrode plate group 2 is provided with a positive electrode plate 3 and a negative electrode plate 4 which are overlapped up and down, the positive electrode plate 3 and the negative electrode plate 4 and the two adjacent electrode plate groups 2 are separated by a diaphragm piece 5, one end of the positive electrode plate 3 in one of the plurality of electrode plate groups 2 is provided with a positive electrode tab 31, one side of the positive electrode plate 3 in the rest of electrode plate groups 2 is provided with a positive electrode tab 31, one end of the negative electrode plate 4 in one of the plurality of electrode plate groups 2 is provided with a negative electrode tab 41, one side of the negative electrode plate 4 in the rest of electrode plate groups 2 is provided with a negative electrode tab 41, and the positive electrode tab 31 on the positive electrode plate 3 and the negative electrode tab 41 on the negative electrode plate 4 in the same group 2 are respectively positioned at two ends or the same side of the electrode plate groups 2. The pole lugs of the pole piece group 2 are arranged at the head of the pole piece in half, and the other half of the pole lugs are arranged at the side edges of the pole pieces, so that the number of pole lug layers at a single welding position is reduced, the welding problem caused by large capacity and multiple layers of the battery core is effectively avoided, meanwhile, the temperature rise of the pole lugs and the welding position is highest when the battery core body 1 discharges, the dispersion of the welding position is also favorable for heat dissipation, the side reaction and performance deterioration caused by high temperature are reduced, and the safety risk is reduced.
As shown in fig. 1, the pole piece group 2 is divided into a first pole piece group 6 and a second pole piece group 7, and the first pole piece group 6 and the second pole piece group 7 are arranged in a staggered manner from top to bottom; or, the N first pole piece groups 6 stacked up and down in sequence and the M second pole piece groups 7 stacked up and down in sequence are staggered and stacked up and down, and the number of N and M is respectively greater than or equal to 2.
Referring to fig. 2 to 6, the positive electrode tab 3 is divided into a first positive electrode tab 32 and a second positive electrode tab 33, the positive electrode tab 31 is divided into a first positive electrode tab 34 and a second positive electrode tab 35, the negative electrode tab 4 is divided into a first negative electrode tab 42 and a second negative electrode tab 43, and the negative electrode tab 41 is divided into a first negative electrode tab 44 and a second negative electrode tab 45. The positive pole piece 3 and the negative pole piece 4 are provided with two cutting modes, and the first positive pole lug 34 of the first positive pole piece 32 and the first negative pole lug 44 of the first negative pole piece 42 are respectively positioned at two ends of the battery core body 1, so that the current density is more uniform, and the problem of performance deterioration such as lithium precipitation caused by concentrated current density when the traditional head part is provided with the positive and negative pole lugs is solved.
The first positive electrode tab 34 is disposed at one end of the first positive electrode tab 32, the second positive electrode tab 35 is disposed at one side of the second positive electrode tab 33, the first negative electrode tab 44 is disposed at one end of the first negative electrode tab 42, and the second negative electrode tab 45 is disposed at one side of the second negative electrode tab 43.
As shown in fig. 1, the first positive electrode tab 32 and the first negative electrode tab 42 are disposed in the first tab group 6 in a vertically stacked manner, and the second positive electrode tab 33 and the second negative electrode tab 43 are disposed in the second tab group 7 in a vertically stacked manner.
The first positive electrode tab 34 in the first pole piece group 6 is located at one end of the first positive electrode tab 32, the first negative electrode tab 44 is located at one end of the first negative electrode tab 42 away from the first positive electrode tab 34, and the first positive electrode tab 34 and the first negative electrode tab 44 are correspondingly disposed at two ends of the first pole piece group 6.
Specifically, the second positive electrode tab 35 in the second electrode tab group 7 is located at one side of the second positive electrode tab 33, the second negative electrode tab 45 is located at the same side of the second negative electrode tab 43 having the second positive electrode tab 35, and the second positive electrode tab 35 and the second negative electrode tab 45 are arranged in a dislocation manner.
Further, the diaphragm member 5 is in a zigzag folding structure from top to bottom, the diaphragm member 5 is respectively arranged between two adjacent pole piece groups 2, between the first positive pole piece 32 and the first negative pole piece 42 and between the second positive pole piece 33 and the second negative pole piece 43, and the width of the diaphragm member 5 is larger than the widths of the first positive pole piece 32, the first negative pole piece 42, the second positive pole piece 33 and the second negative pole piece 43. The mode through the lamination is assembled, utilizes diaphragm spare 5 to realize Z font folding, and this mode compares in the coiling mode can make full use of the inner space of electric core direction aluminum hull, improves energy density, and diaphragm spare 5 turning is in the side simultaneously, has avoided bottom diaphragm spare 5 to the extrusion deformation of polar plate to influence electric core performance.
Further, the first positive electrode tabs 34 in the two first pole piece groups 6 are correspondingly arranged up and down, the first negative electrode tabs 44 in the two adjacent first pole piece groups 6 are correspondingly arranged up and down, the second positive electrode tabs 35 in the two adjacent second pole piece groups 7 are correspondingly arranged up and down, and the second negative electrode tabs 45 in the two adjacent second pole piece groups 7 are correspondingly arranged up and down.
As shown in fig. 7 and 8, the pole piece on one side of the battery core 1, which is close to the aluminum shell, is provided with the tab at the head of the battery core 1, so that welding and core combination of the tab of the battery core are facilitated, and when the battery core is subsequently put into the shell, the tab is uniformly bent inwards, so that the risk of reverse insertion of the tab in the whole tab design can be effectively avoided, meanwhile, the pole piece on the other side of the battery core, which is close to the pole piece on the inner side, is provided with the tab at the side of the battery core 1, so that alignment of the tab at the side is facilitated, arrangement and welding of the switching piece can be reduced, and the required width of the switching piece at the side can be reduced.
The battery in the embodiment comprises the laminated battery core welded by all lugs.
The principle of this embodiment is:
the first pole piece group 6 and the second pole piece group 7 are stacked up and down, the diaphragm piece 5 is placed between the first pole piece group 6 and the second pole piece group 7, the diaphragm piece 5 is placed between the first positive pole piece 32 and the first negative pole piece 42 and between the second positive pole piece 33 and the second negative pole piece 43, the insulating effect is achieved, the short circuit caused by the contact of the positive pole piece and the negative pole piece is avoided, the safety is improved, the service life is prolonged, the first positive pole lug 34 of the first positive pole piece 32 is arranged at one end, the first negative pole lug 44 of the first negative pole piece 42 is arranged at the other end, the second positive pole lug 35 of the second positive pole piece 33 is arranged at one side, the second negative pole piece 45 of the second negative pole piece 43 is arranged at the same side of the second positive pole lug 35 and is arranged in a staggered mode with the second positive pole lug 35, the problem of uneven current density and heat concentration are effectively improved through the arrangement of the lugs, meanwhile the device improves the problems of large welding of the multiple layers of lugs, low rate, high heat concentration of the head of the current density, large polarization caused by uneven current density, and easy full-inverted lug insertion of the current core are solved.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Although terms such as the battery cell 1, the electrode tab group 2, the positive electrode tab 3, the positive electrode tab 31, the first positive electrode tab 32, the second positive electrode tab 33, the first positive electrode tab 34, the second positive electrode tab 35, the negative electrode tab 4, the negative electrode tab 41, the first negative electrode tab 42, the second negative electrode tab 43, the first negative electrode tab 44, the second negative electrode tab 45, the separator member 5, the first electrode tab group 6, the second electrode tab group 7, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (10)
1. The utility model provides a lamination electricity core that full utmost point ear divide to weld, includes electric core (1), electric core (1) have a plurality of pole piece group (2) that stack in proper order and set up, every pole piece group (2) have positive pole piece (3) and negative pole piece (4) that stack from top to bottom set up, just positive pole piece (3) and negative pole piece (4) between and between two adjacent pole piece group (2) separate through diaphragm piece (5), its characterized in that, positive pole piece (3) one end in half pole piece group (2) in a plurality of pole piece group (2) has positive pole tab (31) and positive pole piece (3) one side in remaining pole piece group (2) is equipped with positive pole tab (31), negative pole piece (4) one end in half pole piece group (2) in a plurality of pole piece group (2) has negative pole tab (41) and negative pole piece (4) one side in remaining pole piece group (2) is equipped with negative pole tab (41), and be located positive pole piece (3) in same group (2) positive pole piece (31) and negative pole piece (4) on same both ends tab (41) respectively.
2. The laminated battery cell of the full-tab split welding according to claim 1, wherein the pole piece group (2) is divided into a first pole piece group (6) and a second pole piece group (7), and the first pole piece group (6) and the second pole piece group (7) are arranged in a staggered manner from top to bottom; or, the N first pole piece groups (6) which are overlapped up and down in sequence and the M second pole piece groups (7) which are overlapped up and down in sequence are overlapped up and down in a staggered way, and the number of N and M is respectively more than or equal to 2.
3. The full-tab split welded laminated battery cell according to claim 2, wherein the positive electrode tab (3) is divided into a first positive electrode tab (32) and a second positive electrode tab (33), the positive electrode tab (31) is divided into a first positive electrode tab (34) and a second positive electrode tab (35), the negative electrode tab (4) is divided into a first negative electrode tab (42) and a second negative electrode tab (43), and the negative electrode tab (41) is divided into a first negative electrode tab (44) and a second negative electrode tab (45).
4. A full tab separately welded laminated battery cell according to claim 3, wherein the first positive tab (34) is disposed at one end of the first positive electrode tab (32), the second positive electrode tab (35) is disposed at one side of the second positive electrode tab (33), the first negative electrode tab (44) is disposed at one end of the first negative electrode tab (42), and the second negative electrode tab (45) is disposed at one side of the second negative electrode tab (43).
5. The full-tab split-welded laminated battery cell according to claim 3 or 4, wherein the first positive electrode piece (32) and the first negative electrode piece (42) are stacked up and down in the first electrode piece group (6), and the second positive electrode piece (33) and the second negative electrode piece (43) are stacked up and down in the second electrode piece group (7).
6. The laminated battery cell of claim 3 or 4, wherein the first positive electrode tab (34) in the first electrode tab group (6) is located at one end of the first positive electrode tab (32) and the first negative electrode tab (44) is located at one end of the first negative electrode tab (42) far away from the first positive electrode tab (34), and the first positive electrode tab (34) and the first negative electrode tab (44) are correspondingly arranged at two ends of the first electrode tab group (6).
7. The laminated battery cell of claim 3 or 4, wherein the second positive electrode tab (35) in the second electrode tab group (7) is located at one side of the second positive electrode tab (33) and the second negative electrode tab (45) is located at the same side of the second negative electrode tab (43) with the second positive electrode tab (35), and the second positive electrode tab (35) and the second negative electrode tab (45) are arranged in a staggered manner.
8. The full-tab split welded laminated battery cell according to claim 3 or 4, wherein the diaphragm member (5) is in a zigzag folded structure from top to bottom, the diaphragm member (5) is respectively arranged between two adjacent pole piece groups (2), between the first positive pole piece (32) and the first negative pole piece (42) and between the second positive pole piece (33) and the second negative pole piece (43), and the width of the diaphragm member (5) is larger than the widths of the first positive pole piece (32), the first negative pole piece (42), the second positive pole piece (33) and the second negative pole piece (43).
9. The laminated battery cell of full-tab split welding according to claim 8, wherein the first positive tabs (34) in the two adjacent first pole piece groups (6) are arranged correspondingly up and down, the first negative tabs (44) in the two adjacent first pole piece groups (6) are arranged correspondingly up and down, the second positive tabs (35) in the two adjacent second pole piece groups (7) are arranged correspondingly up and down, and the second negative tabs (45) in the two adjacent second pole piece groups (7) are arranged correspondingly up and down.
10. A battery comprising a full tab split welded laminated cell as defined in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322182063.0U CN220543987U (en) | 2023-08-14 | 2023-08-14 | Laminated battery cell and battery with all-lug separate welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322182063.0U CN220543987U (en) | 2023-08-14 | 2023-08-14 | Laminated battery cell and battery with all-lug separate welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220543987U true CN220543987U (en) | 2024-02-27 |
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ID=89968891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322182063.0U Active CN220543987U (en) | 2023-08-14 | 2023-08-14 | Laminated battery cell and battery with all-lug separate welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220543987U (en) |
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2023
- 2023-08-14 CN CN202322182063.0U patent/CN220543987U/en active Active
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