CN115377620A - Electrode switching piece and battery tab switching structure - Google Patents
Electrode switching piece and battery tab switching structure Download PDFInfo
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- CN115377620A CN115377620A CN202210960996.5A CN202210960996A CN115377620A CN 115377620 A CN115377620 A CN 115377620A CN 202210960996 A CN202210960996 A CN 202210960996A CN 115377620 A CN115377620 A CN 115377620A
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- 238000003466 welding Methods 0.000 claims abstract description 56
- 230000007704 transition Effects 0.000 claims description 20
- 239000011521 glass Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 241001391944 Commicarpus scandens Species 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides an electrode switching sheet and an electrode switching structure formed based on the electrode switching sheet, wherein the electrode switching sheet comprises two lug switching parts which are arranged in parallel along the x direction and are positioned on the same plane and are used for connecting battery lugs and a pole switching part which is formed in the middle of the inner side edge of the two lug switching parts and is used for connecting the two lug switching parts, the middle of the inner side edge of the two lug switching parts is close to each other along the y direction, each lug switching part forms two welding ends with opposite extension directions relative to the pole switching part, and a vacant area is formed between the two welding ends which extend towards the same direction and are respectively positioned on the two lug switching parts. Compared with the adapter plate in the prior art, the adapter plate provided by the invention has smaller occupied space, is beneficial to improving the energy density of the battery, and is not easy to break when the adapter plate is stressed after welding.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to an electrode adapter sheet and a battery tab adapter structure.
Background
Due to the non-renewable nature of fossil energy and the pollution problems that arise during its use, more and more fields are beginning to look for alternatives to fossil energy, for example new energy vehicles that have been driven by electricity in recent years are beginning to take up a share in the market. The use of large and medium-sized electric equipment such as electric vehicles, electric bicycles and other electric vehicles and energy storage facilities becomes an important technical means for solving global problems such as energy crisis and environmental pollution, and the development of these fields depends on the development of high-performance batteries to a great extent, for example, the electric vehicles need to ensure large battery capacity and small occupied space in order to achieve high endurance performance equivalent to that of the existing fuel vehicles, and the lithium batteries have high energy density, so that the space utilization rate is high, and the lithium batteries have wide application prospects in the field of new energy.
The lithium ion battery generally comprises an electric core, a cover plate, a shell and the like, wherein the electric core is used for storing electric energy, and positive and negative poles are arranged on the cover plate and can be connected with external equipment. Usually, the battery cell is provided with a positive electrode tab and a negative electrode tab, and the positive electrode tab and the negative electrode tab on the battery cell are correspondingly communicated with the positive electrode post and the negative electrode post on the cover plate by using the adapter plate as an intermediate connector, so that electric energy can be transmitted. For example, patent document No. 201820204509.1 discloses a battery, which comprises a cover plate assembly, an adapter plate and a pole core, wherein the adapter plate comprises a cover plate connecting part and a pole lug adapter part, the cover plate connecting part is connected with the cover plate assembly, and the pole lug adapter part is connected with a pole lug of the pole core. In the above-mentioned technology, the interposer is formed by folding a long structure, resulting in a large final thickness of the interposer, and occupying much space in the height direction of the battery, which may reduce the energy density.
Disclosure of Invention
In order to solve the problems, the invention provides an electrode adapter sheet which is simple in structure, small in occupied space and high in safety.
In order to achieve the purpose, the invention adopts the following technical means:
the utility model provides an electrode switching piece, includes along x to parallel arrangement and be in two utmost point ear switching portions that are used for connecting battery utmost point ear of coplanar and along y to making two utmost point ear switching portions inboard middle parts that are close to each other form the utmost point post switching portion of connecting, every utmost point ear switching portion forms two welding ends that extend opposite direction for utmost point post switching portion, forms the vacant area between two welding ends that lie in respectively on two utmost point ear switching portions to the extension of same direction.
It should be noted that the x direction and the y direction in the present invention refer to any two directions perpendicular to each other in a two-dimensional plane, and do not refer to a fixed direction, and for example, a two-dimensional rectangular coordinate system, the x direction and the x direction in the coordinate system are collectively referred to as the x direction and the y direction in the present invention.
In addition, in the adapter plate provided by the invention, the two lug adapter parts are respectively provided with two welding ends, when the welding ends are taken as welding sites, the welding sites of the lug adapter parts can be staggered with the welding sites of the pole adapter parts, the mutual influence of the lug welding and the pole welding is avoided, and simultaneously, when the pole adapter parts are subjected to a force vertical to the plane direction after the welding is finished, the pole adapter parts are subjected to the force vertical to the plane direction. Each pole lug switching part is stressed through two basically symmetrical welding sites, so that the stress is more balanced, and a deformation space is reserved between the two welding sites of the same pole lug switching part, so that the breaking probability of a switching piece can be reduced.
Furthermore, the pole switching part also comprises a fusing area, and the fusing area is arranged at the position, close to the inner side edge of the pole switching part, of the two sides of the pole switching part; the fusing area is provided with a safety hole which is of a long strip-shaped structure arranged along the x direction. Furthermore, a glue block can be arranged to cover and fill the safety hole.
Further, the length of the vacant area in the x direction is not less than that of the tab transition part in the x direction, and the length of the vacant area in the y direction is 20% -30% of that of the tab transition part in the y direction.
Furthermore, the pole post switching part forms a boss structure relative to the pole lug switching part, and the pole post switching part comprises a main body part which is positioned on a different plane from the pole lug switching part and a curved surface transition part which enables the main body part to be connected with the inner side edge of the pole lug switching part.
Furthermore, the fusing area is arranged on the curved surface transition part.
Furthermore, the thickness of the electrode adapter sheet is 0.6 to 2.0mm.
The invention also aims to provide a battery tab adapting structure based on the electrode adapting sheet, which comprises a battery core group and the electrode adapting sheet of any one of claims 1 to 6; the battery cell pole group comprises two battery cell units which are arranged in parallel, each battery cell unit comprises two pole lugs, and the two pole lugs are respectively connected with the positive pole and the negative pole of the battery cell unit; in the two battery cell units, two tabs connected with the positive electrode are connected through one electrode adapter sheet, and two tabs connected with the negative electrode are connected through the other electrode adapter sheet; the electrode lug comprises a welding part positioned at the end part and a middle part which enables the welding part to be connected with the positive electrode or the negative electrode of the battery cell unit, and the welding part is attached to the electrode lug switching part of the electrode switching piece and forms welding connection.
Furthermore, the areas where the tab adapter and the tab are welded and connected are located at the two welding ends of the tab adapter.
Further, still include the screening glass, the screening glass set up the lateral surface in the weld part of utmost point ear.
Further, still include the apron subassembly, the apron subassembly be equipped with utmost point post, utmost point post and the utmost point post switching portion of switching piece form welded connection.
The technical scheme of the invention can achieve the following beneficial effects:
1. in the adapter plate provided by the invention, the pole adapter part is connected with the middle part of the pole lug adapter part, so that the overall length of the adapter plate in the x direction does not exceed the length of the pole lug adapter part, and the overall occupied area of the adapter plate does not exceed the rectangular area enclosed by the outer side edges of the two pole lug adapter parts, and compared with the adapter plate in the prior art, the adapter plate has smaller occupied space.
2. In the adapter plate provided by the invention, the two pole lug adapter parts are respectively provided with the two welding ends, when the welding ends are taken as welding sites, the welding sites of the pole lug adapter parts and the welding sites of the pole post adapter parts can be staggered, the mutual influence between pole lug welding and pole post welding is avoided, and meanwhile, the adapter plate has a deformation space when being subjected to a force vertical to a plane direction, so that the probability of fracture is reduced.
3. In some embodiments of the invention, the pole switching part forms a protruding structure relative to the pole lug switching part, when the pole is welded, the protruding pole switching part can be matched with the cover plate assembly to improve the positioning precision and facilitate the welding, and meanwhile, the protruding structure can ensure that the fusing part is not easy to contact again due to vibration after the switching piece is fused, thereby improving the safety.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an interposer;
FIG. 2 is a schematic structural diagram of an interposer in another embodiment;
FIG. 3 is a schematic structural diagram of an interposer in another embodiment;
FIG. 4 is a schematic structural diagram of an interposer in another embodiment;
fig. 5 is a schematic view of a battery tab adapting structure according to an embodiment;
FIG. 6 is a schematic diagram of a cell structure according to an embodiment;
FIG. 7 is a schematic diagram of another embodiment of a battery;
in the figure, 1-transition piece, 2-cell pole group, 3-cover plate component, 11-tab transition part, 12-pole transition part, 13-fusing area, 14-vacant area, 21-cell unit, 22-tab, 23-protection plate, 31-pole, 32-cover plate main body, 33-cover plate insulating piece, 111-welding end, 121-curved surface transition part, 131-safety hole, 221-welding part, 222-middle part.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance, and moreover, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Examples
As shown in fig. 1, the present invention provides an interposer, which is made of conductive metal and has a main body made of AL 1060. The adapter plate comprises two strip-shaped sheet-shaped pole lug adapter parts 11 arranged along the x direction, the two pole lug adapter parts are arranged in the same plane, the rectangular pole lug adapter parts 12 enable the two pole lug adapter parts to be connected in the y direction at the middle parts of inner side edges, close to each other, of the two pole lug adapter parts, namely, the two pole lug adapter parts on the two sides respectively form conductive paths with the middle pole lug adapter part, the pole lug adapter parts are connected with the middle parts of the two pole lug adapter parts, so that two welding end heads 111 extending in opposite directions can be formed by each pole lug adapter part in the x direction relative to the pole lug adapter parts, under the interval formed by the pole lug adapter parts, two welding end heads extending in the same direction and respectively positioned on the two pole lug adapter parts form an empty area 14, namely, the position of the pole lug part in the x direction limits the distance between two ends of the pole lug adapter parts, the length of the empty area in the y direction is slightly larger than the length of the pole lug adapter part in the y direction, so that the pole lug adapter parts have larger area for subsequent welding operation, the length of the empty area of the pole lug adapter parts in the x direction is 20% -30%, namely, the length of the pole lug adapter parts in the x direction is equal to 60%, and the subsequent pole lug adapter parts are convenient for connection between the pole lug adapter parts and the pole lug adapter parts. The utmost point ear protection piece of this embodiment can form from first side and utmost point ear through utmost point ear switching portion and be connected to form from the second side and be connected with utmost point post, thereby make and form the electric path between utmost point ear and the utmost point post, owing to have two utmost point ear switching portions, consequently can form with two utmost point ears and be connected and make two utmost point ears form parallel structure, realize the increase-volume of battery.
In another embodiment, the pole post adapting part may be provided in other shapes, as shown in fig. 2, the pole post adapting part has two arc-shaped protruding structures formed in the opposite directions in the x direction, in addition to the middle part of the pole post adapting part connected with the two pole post adapting parts in the y direction, so that the pole post adapting part is in an ellipse-like shape; the fusing area 13 is formed at the connecting part of the pole lug switching part and the pole post switching part, and can be fused when the temperature of the battery short circuit switching sheet rises rapidly, so that the conductive path formed by the pole lug switching part and the pole post switching part is broken, and the short circuit protection effect is achieved. The pole switching part in the shape has a smaller width than a fusing area formed between the pole switching part and the pole lug switching part under the condition of larger area, so that the protection performance of the fusing area is improved while the pole switching part is easier to be welded with a pole.
In another embodiment, the fuse area can be further provided with a through hole structure to improve the response speed for dealing with the short circuit situation, as shown in fig. 3, the adapter plate comprises two strip-shaped sheet tab switching parts arranged along the x direction and a pole switching part for connecting the two tab switching parts along the y direction, the fuse area is formed at the joint part of the tab switching part and the pole switching part, the fuse area is provided with a strip-shaped fuse hole extending along the x direction, the fuse hole greatly reduces the relative width of the fuse area, and when the battery is in short circuit, the fuse speed of the fuse area is faster.
In another embodiment, a non-integrated planar structure may be formed between the pole-terminal switching portion and the pole-terminal switching portion, as shown in fig. 4, the switching piece includes two strip-shaped pole-terminal switching portions disposed along the x direction and a pole-terminal switching portion connecting the two pole-terminal switching portions along the y direction, the two pole-terminal switching portions are disposed on the same plane, the pole-terminal switching portion forms a protrusion structure toward one side direction relative to the plane of the pole-terminal switching portion, the pole-terminal switching portion includes a main body portion disposed on a different plane from the pole-terminal switching portion and a curved surface transition portion 121 connecting the side edge of the main body portion with the inner side edge of the pole-terminal switching portion, the main body portion and the pole-terminal switching portion are disposed in parallel, the curved surface transition portion forms an included angle with the main body portion, and the fusing region 13 and the safety hole 131 are disposed on the inclined curved surface transition portion. This embodiment has further strengthened the safety guarantee nature in fusing district, when fusing takes place in the fusing district, two fusing ends of formation can be respectively to the main part place orientation melting shrink of utmost point ear switching portion place orientation and utmost point post switching portion, thereby the interval on horizontal direction and the direction of height has been formed, consequently when the battery receives external force to take place vibrations, two fusing ends are difficult to be close to each other and make utmost point ear switching portion and utmost point post switching portion switch on once more, compare the scheme security in figure 3 higher. In addition, in the embodiment, the fusing area is arranged on the curved surface transition part, so that the fusing area is not easily affected when the adapter plate is welded with the lug and the pole, and the welding is more convenient.
As shown in fig. 5, an embodiment of the present invention further provides a battery tab switching structure, which is composed of a cell pole group 2 and a switching sheet 1, where the cell pole group includes two cell units 21 arranged in parallel and a tab 22 arranged at one end of each cell unit, each cell unit includes a tab connected to an anode and a tab connected to a cathode, the two cell units are arranged in close contact with each other, the two cell units and the tabs connected to the anodes are arranged on the same side, the two cell units and the tabs connected to the cathodes are arranged on the same side, the two tabs connected to the anodes form a parallel connection through one switching sheet, and the two tabs connected to the cathodes form a parallel connection through the other switching sheet. Specifically, as shown in any one of fig. 1 to 3, the adapter sheet is configured such that two tab adapter portions on both sides of the adapter sheet are connected to one tab. The tab forms a 7-shaped structure, wherein the transverse structure is a welding part 221 for forming welding connection with a tab switching part of the switching sheet, the longitudinal structure is a middle part 222 for connecting the welding part with the battery cell unit, the welding part and the middle part are integrated into a plane structure before the tab is welded with the switching sheet, and the tab is bent after the welding part and the switching sheet are welded, so that the 7-shaped structure is formed. Further, in order to protect the welding part and prevent the welding head from directly contacting the tab and causing structural damage of the tab, the welding part is further provided with a protection plate 23, and further, in order to prevent the tab from being broken in the bending process, the protection plate 23 comprises a main body piece made of a metal material and a bevel protection piece arranged on one side of the tab, which is to form a bevel, wherein the bevel protection piece forms a non-sharp surface structure, so that the tab can form natural transition instead of forming a sharp bevel in the bending process.
As shown in fig. 6, an embodiment of the present invention further provides another battery tab adapting structure, which is formed by sequentially connecting a battery cell pole group 2, an adapting sheet 1 and a cover plate assembly 3, wherein the battery cell pole group is used for storing electric energy, the adapting sheet is used for forming an electrical path between the battery cell pole group and the cover plate assembly, and the cover plate assembly is used for transmitting electric energy to an external device. The battery cell pole group comprises two battery cell units and pole lugs arranged at one end of each battery cell unit, each battery cell unit comprises one pole lug connected with an anode and one pole lug connected with a cathode, the two battery cell units are tightly attached to each other and are arranged at the same side, the two battery cell units and the pole lugs connected with the anode are arranged at the same side, the two pole lugs connected with the cathode are arranged at the same side, the two pole lugs connected with the anode form parallel connection through a switching piece, and the two pole lugs connected with the cathode form parallel connection through another switching piece. The cover plate assembly comprises a cover plate main body 32, a cover plate insulating piece 33 and a pole 31 penetrating through the cover plate main body and the cover plate insulating piece, an inner connection end of the pole and a pole switching part of the switching piece form welding connection, and the pole are respectively welded on two opposite side faces of the switching piece. In the apron subassembly, in order to make utmost point post and apron main part and apron insulating part installation as an organic whole, can be equipped with logical groove in apron main part and apron insulating part middle part, utmost point post is installed lead to the inslot to the lower extreme of utmost point post passes logical groove and is connected with the utmost point post switching portion formation of switching piece. The structure of the adapter sheet can be selected from any one of figures 1 to 3, and the whole adapter sheet is in an integral plane shape. Preferably, two welding ends formed in the x direction of each pole lug transition part relative to the pole post transition part can be used as welding sites, so that the welding sites of the pole lug transition part and the pole post transition part are staggered, and mutual influence generated when the pole lug transition part and the pole post transition part are respectively welded is avoided.
In another embodiment, the post adapter portion of the adapter plate in the battery tab adapter structure may be protruded toward the cover plate direction relative to the post adapter portion, as shown in fig. 7, the post adapter portion forms a protruding structure toward one side of the cover plate, and the protruding structure is embedded into the through groove of the cover plate for mounting the post, and the protruding structure and the through groove form a shape fit, so that the adapter plate does not slide along the y direction. Specifically, the structure of the interposer may be as shown in fig. 4. Through this structure help the location between switching piece and the apron subassembly, improve the welding precision, it needs to explain that, the welding plane between utmost point post switching portion and the utmost point post should not cross the face of meeting between apron main part and the apron insulating part, avoids the insulation failure of apron insulating part.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. An electrode patch, characterized by: including along x to parallel arrangement and be in two utmost point ear switching portion (11) that are used for connecting battery utmost point ear of coplanar and along y to making two utmost point ear switching portion inboard middle parts that are close to each other form utmost point post switching portion (12) of connection, every utmost point ear switching portion forms two welding end (111) that extending direction is opposite for utmost point post switching portion, is located two welding end that extend to same direction in different utmost point ear switching portion and forms vacant area (14) between.
2. An electrode interposer as recited in claim 1, wherein: the pole post switching part also comprises a fusing area (13), and the fusing area is arranged at the positions, close to the inner side edge of the pole lug switching part, of the two sides of the pole post switching part; the fusing area is provided with a safety hole (131) which is of a long strip structure arranged along the x direction.
3. An electrode interposer as recited in claim 2, wherein: the length of the vacant area in the x direction is not less than that of the tab transfer part in the x direction, and the length of the vacant area in the y direction is 20% -30% of that of the tab transfer part in the y direction.
4. An electrode interposer as recited in claim 2, wherein: the pole post switching part forms a boss structure relative to the pole lug switching part, and the pole post switching part comprises a main body part which is positioned on a different plane with the pole lug switching part and a curved surface transition part (121) which enables the main body part to be connected with the inner side edge of the pole lug switching part.
5. An electrode interposer as recited in claim 4, wherein: the fusing area is arranged on the curved surface transition part.
6. An electrode interposer as recited in claim 1, wherein: the thickness of the electrode adapter sheet is 0.6 to 2.0mm.
7. A battery tab switching structure is characterized by comprising a battery core group (2) and the electrode switching sheet (1) of any one of claims 1 to 6; the battery cell pole group comprises two battery cell units (21) which are arranged in parallel, and the positive pole and the negative pole of each battery cell unit are respectively connected with a pole lug (22); in the two battery cell units, two tabs connected with the positive electrode are connected through one electrode adapter sheet, and two tabs connected with the negative electrode are connected through the other electrode adapter sheet; the electrode lug comprises a welding part (221) positioned at the end part and an intermediate part (222) enabling the welding part to be connected with the positive electrode or the negative electrode of the battery cell unit, and the welding part is attached to the electrode lug adapter part of the electrode adapter sheet and forms welding connection.
8. The battery tab adapting structure according to claim 7, wherein: the area where the lug adapter part and the lug form welding connection is positioned at two welding ends of the lug adapter part.
9. The battery tab adapting structure according to claim 7, wherein: still include the screening glass, the screening glass set up in the weld part of utmost point ear.
10. The battery tab switching structure according to claim 7, further comprising a cover plate assembly (3), wherein the cover plate assembly comprises a terminal post (31), a cover plate main body (32) and a cover plate insulating member (33), and the terminal post is welded to the terminal post switching portion of the switching piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210960996.5A CN115377620A (en) | 2022-08-11 | 2022-08-11 | Electrode switching piece and battery tab switching structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210960996.5A CN115377620A (en) | 2022-08-11 | 2022-08-11 | Electrode switching piece and battery tab switching structure |
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| CN115377620A true CN115377620A (en) | 2022-11-22 |
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| CN202210960996.5A Pending CN115377620A (en) | 2022-08-11 | 2022-08-11 | Electrode switching piece and battery tab switching structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115603005A (en) * | 2022-11-29 | 2023-01-13 | 瑞浦兰钧能源股份有限公司（Cn） | Battery welding method and battery |
| CN116799394A (en) * | 2023-08-29 | 2023-09-22 | 深圳海辰储能控制技术有限公司 | Energy storage device and electric equipment |
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| CN216720228U (en) * | 2022-02-10 | 2022-06-10 | 中创新航科技股份有限公司 | Switching piece, battery and group battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115603005A (en) * | 2022-11-29 | 2023-01-13 | 瑞浦兰钧能源股份有限公司（Cn） | Battery welding method and battery |
| CN115603005B (en) * | 2022-11-29 | 2023-04-21 | 瑞浦兰钧能源股份有限公司 | Welding method of battery and battery thereof |
| CN116799394A (en) * | 2023-08-29 | 2023-09-22 | 深圳海辰储能控制技术有限公司 | Energy storage device and electric equipment |
| CN116799394B (en) * | 2023-08-29 | 2023-12-22 | 深圳海辰储能控制技术有限公司 | Energy storage device and electric equipment |
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