CN218242162U - Electric connecting sheet and battery module - Google Patents
Electric connecting sheet and battery module Download PDFInfo
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- CN218242162U CN218242162U CN202221954982.4U CN202221954982U CN218242162U CN 218242162 U CN218242162 U CN 218242162U CN 202221954982 U CN202221954982 U CN 202221954982U CN 218242162 U CN218242162 U CN 218242162U
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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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Abstract
The application discloses electricity connection piece and battery module relates to battery module technical field, electricity connection piece includes first connection piece, second connection piece and buffering connection piece, first connection piece with the second connection piece passes through the buffering connection piece is connected, the buffering connection piece is the form of buckling, the buffering connection piece includes vertical section of bending and the horizontal section of bending, vertical section of bending with first connection piece and second connection piece are perpendicular, the horizontal section of bending with first connection piece and second connection piece are parallel, and per two are adjacent vertical section of bending with the horizontal section of bending head and the tail connect gradually. In order to solve when battery module charge-discharge cycle, the inflation can take place for electric core, can take place relative displacement between end plate and the electric core and lead to the output pole connection piece to take place to warp, and it is great when end plate expansion deformation, correspondingly, when the zigzag department stress of bending increases thereupon with meeting an emergency, there is the problem of fatigue failure or cracked phoenix danger in this output pole connection piece.
Description
Technical Field
The application relates to the technical field of battery modules, in particular to an electric connecting sheet and a battery module.
Background
The battery module includes a plurality of electric cores and electricity connection piece, and wherein, the main effect of electricity connection piece is the electricity and connects, and electricity connection piece generally includes electric core connection piece and output pole connection piece.
The battery cell connecting sheet is connected between the battery cell and the battery cell; one end of the output electrode connecting sheet is connected with the cell pole of the cell in a welding way, the other end of the output electrode connecting sheet is connected with the output electrode support on the end plate by a bolt, and the cross section of the output electrode connecting sheet is generally Z-shaped. When battery module charge-discharge circulation, the inflation can take place for electric core, can take place relative displacement between end plate and the electric core and lead to the output pole connection piece to take place to warp, and it is great when the end plate inflation deformation, correspondingly, the zigzag is bent the department stress and is met an emergency when increasing thereupon, and there is fatigue failure or cracked phoenix danger in this output pole connection piece.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides an electric connection piece and battery module to solve when battery module charge-discharge circulation, the inflation can take place for electric core, can take place relative displacement between end plate and the electric core and lead to the output pole connection piece to take place to warp, and it is great when the end plate inflation warp, correspondingly, when the zigzag department of bending stress and meeting an emergency and increasing thereupon, there is the problem of fatigue failure or cracked phoenix danger in this output pole connection piece.
In a first aspect, the electric connection sheet comprises a first connection sheet, a second connection sheet and a buffering connection sheet, wherein the first connection sheet and the second connection sheet are connected through the buffering connection sheet, and the buffering connection sheet is bent.
In some embodiments, the buffer connecting piece includes a vertical bending section and a horizontal bending section, the vertical bending section is perpendicular to the first connecting piece and the second connecting piece, the horizontal bending section is parallel to the first connecting piece and the second connecting piece, and every two adjacent vertical bending sections are sequentially connected with the horizontal bending section end to end.
In some embodiments, the sum of the lengths of all the horizontal bending sections is equal to the closest distance in the horizontal direction between the first connecting sheet and the second connecting sheet.
In some embodiments, the length of each vertical bending section is greater than or equal to the distance between the first connecting sheet and the second connecting sheet in the vertical direction.
In some embodiments, the horizontal bends are of equal length.
In some embodiments, a grid film is arranged between adjacent vertical bending sections.
In some embodiments, the sum of the lengths of all the vertical bending sections is equal to the distance between the vertical directions of the first connecting sheet and the second connecting sheet.
In some embodiments, the second connecting piece is provided with a bolt hole, and is connected with the output pole support on the end plate through a bolt, and the first connecting piece is electrically connected to the pole of the battery cell.
In some embodiments, the joints of the first connecting piece and the second connecting piece with the buffer connecting piece are provided with chamfers.
In a second aspect, a battery module is provided, which comprises the electric connecting sheet.
The technical scheme who provides this application brings beneficial effect includes:
the embodiment of the application provides an electric connection piece, because connect through a buffering connection piece between first connection piece and second connection piece, and the buffering connection piece is the form of buckling. When the battery module expands, the bent buffer connecting sheet provides a buffer effect for the pulling part of the electric connecting sheet (the connecting part of the first connecting sheet and the second connecting sheet), the bending angle change (the angle change before and after expansion) in the buffer connecting sheet is smaller than that of the former Z-shaped output electrode connecting sheet, the stress and strain of the corresponding bending part can also be reduced, and the risk of fatigue failure or fracture of the output electrode connecting sheet can be obviously reduced. Simultaneously, because electric core when production, the error of different degree can appear in its size, when electric core when the assembly, because new electric connection piece ductility is stronger, the electric connection piece that has the buffering connection piece can adapt to not equidimension electric core, has better suitability.
The embodiment of the application provides a battery module, it includes an electricity connection piece, when battery module inflation, can show the cracked risk of reduction module electricity connection piece, extension battery module life.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a structural diagram of an electrical connection sheet according to an embodiment of the present application.
Fig. 2 is a perspective view of a battery module according to an embodiment of the present disclosure.
Fig. 3 is a side view of a first electrical connection pad provided in an embodiment of the present application.
Fig. 4 is a side view of a second electrical connection tab provided in an embodiment of the present application.
Fig. 5 is a side view of a third electrical connection pad provided in an embodiment of the present application.
Fig. 6 is a side view of a fourth electrical connection tab provided in an embodiment of the present application.
In the figure: 1. an electrically connecting sheet; 11. a first connecting piece; 12. a second connecting sheet; 121. bolt holes; 13. a buffer connecting sheet; 131. a vertical bending section; 132. horizontally bending the sections; 2. an output pole support; 3. and (5) battery cores.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
The embodiment of the application provides an electric connection piece, it can solve the battery module when the operation, and the inflation can take place for the electric core, can take place relative displacement between end plate and the electric core and lead to the output pole connection piece to take place to warp, and is great when the end plate expansion deformation, correspondingly, when the stress of zigzag corner increases thereupon with meeting an emergency, there is the problem of fatigue failure or cracked phoenix danger in this output pole connection piece.
Referring to fig. 1, the present embodiment provides an electrical connection sheet, where the electrical connection sheet 1 includes a first connection sheet 11, a second connection sheet 12, and a buffer connection sheet 13, the first connection sheet 11 and the second connection sheet 12 are connected by the buffer connection sheet 13, and the buffer connection sheet 13 is bent.
Because the first connecting sheet 11 and the second connecting sheet 12 are connected through the buffer connecting sheet 13, and the buffer connecting sheet 13 is bent, when the battery module expands, the bent buffer connecting sheet 13 provides a buffer effect for the pulling part of the electric connecting sheet 1 (the pulling part is the part where the buffer connecting sheet 13 is respectively connected with the first connecting sheet and the second connecting sheet), and the bending angle change (the angle change before and after expansion) in the buffer connecting sheet 13 is smaller than that of the previous Z-shaped output pole connecting sheet, the stress and strain of the corresponding bending part can also be reduced, and the risk of fatigue failure or fracture of the output pole connecting sheet can be obviously reduced. Simultaneously, because electric core when production, the error of different degree can appear in its size, when electric core when the assembly, because 1 ductility of new electric connection piece is stronger, the electric connection piece 1 that has the buffering connection piece can adapt to not equidimension electric core, has better suitability.
It should be noted that: the bending angle range in the bending shape of the buffer connecting sheet 13 is more than 0 degree and less than 180 degrees, and the number and the shape of the bending sections in the buffer connecting sheet 13 are not particularly limited. In the present embodiment, the first connecting piece 11, the second connecting piece 12 and the buffer connecting piece 13 are integrally formed, or may be formed by welding.
As an alternative embodiment, referring to fig. 3 to 6, the buffer connecting sheet 13 includes a vertical bending section 131 and a horizontal bending section 132, the vertical bending section 131 is perpendicular to the first connecting sheet 11 and the second connecting sheet 12, the horizontal bending section 132 is parallel to the first connecting sheet 11 and the second connecting sheet 12, and every two adjacent vertical bending sections 131 are sequentially connected with the horizontal bending section 132 end to end.
Through establishing into 90 between adjacent vertical bending 131 and the horizontal bending 132, make whole electric connection piece 1 more save space.
As an alternative embodiment, as shown in fig. 3 to 6, the sum of the lengths of all the horizontal bending sections 132 is equal to the closest distance in the horizontal direction between the first connecting piece 11 and the second connecting piece 12, and this arrangement saves material. Here, the horizontal direction means: in the direction of a in the figure.
In a preferred embodiment, as shown in fig. 3, 4 and 5, the length of each vertical bending segment 131 is greater than or equal to the distance between the first connecting piece 11 and the second connecting piece 12 in the vertical direction. Through the arrangement, the buffer connecting sheet 13 is in a grid shape, every two adjacent vertical bending sections 131 and the horizontal bending section 132 between the two vertical bending sections 131 integrally form a U-shaped or inverted U-shaped grid, when the battery module vibrates, friction is formed between the two adjacent grids, kinetic energy is converted into heat energy, and the vibration energy of the battery module can be absorbed. It should be noted that: the vertical direction here means: in the direction of B in the figure.
As an alternative embodiment, see fig. 3 and 5, the horizontal bending segments 132 have the same length. Also, with this arrangement, friction is generated between adjacent grids in the grid-shaped buffer connecting plates 13, and when the battery module vibrates, friction is generated between two adjacent grids, so that kinetic energy is converted into heat energy, and the vibration energy of the battery module can be absorbed, and the arrangement is space-saving.
Wherein, as optional embodiment, be equipped with the grid membrane between the adjacent vertical section of bending 131, because the grid membrane cover is established at every two adjacent vertical sections of bending 131 and the level that is connected through these two vertical sections of bending 131 is bent section 132 and is formed a U-shaped or the grid of the shape of falling the U, can increase the friction between grid and the grid, when battery module vibrates, form the friction between two adjacent grids, turn into heat energy with kinetic energy, the vibration energy of absorption battery module that can be better, also can play the effect of protection electricity connection piece 1 simultaneously.
As an alternative embodiment, referring to fig. 6, the sum of the lengths of all the vertical bending sections 131 is equal to the distance between the first connecting sheet 11 and the second connecting sheet 12 in the vertical direction, and by this arrangement, the space and the material consumption can be saved. The vertical direction here means: in the direction of B in the figure.
As an alternative embodiment, referring to fig. 1, a bolt hole 121 is formed in the second connecting piece 12, and is connected to the output pole support 2 on the end plate through a bolt, and the first connecting piece 11 is electrically connected to the pole of the electric core 3, so that the connection mode is simple.
As an optional embodiment, the joints of the first connecting sheet 11, the second connecting sheet 12 and the buffer connecting sheet 13 are both set to be chamfers, a buffer transition section is provided for the joints of the first connecting sheet 11, the second connecting sheet 12 and the buffer connecting sheet 13, when the battery module expands, partial stress at the joints is reduced, and the chamfer design also enables the whole electric connecting sheet 1 to be fixed more flexibly and to be attached to the battery module.
Referring to fig. 2, the present application provides a battery module, including the above electrical connection sheet 1, and the battery module can reduce the number of times of breaking the electrical connection sheet 1, reduce the number of times of replacing the electrical connection sheet 1, and prolong the service life of the battery module by installing such an electrical connection sheet 1.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be 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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in this application, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The electric connection sheet is characterized by comprising a first connection sheet (11), a second connection sheet (12) and a buffer connection sheet (13), wherein the first connection sheet (11) and the second connection sheet (12) are connected through the buffer connection sheet (13), and the buffer connection sheet (13) is bent.
2. An electrical connection sheet according to claim 1, wherein: buffer connection piece (13) including the vertical section of bending (131) and the horizontal section of bending (132), the vertical section of bending (131) with first connection piece (11) and second connection piece (12) are perpendicular, the horizontal section of bending (132) with first connection piece (11) and second connection piece (12) are parallel, and per two are adjacent vertical section of bending (131) with the horizontal section of bending (132) end to end connects gradually.
3. An electrical connection sheet according to claim 2, wherein: the sum of the lengths of all the horizontal bending sections (132) is equal to the nearest distance in the horizontal direction of the first connecting sheet (11) and the second connecting sheet (12).
4. An electrical connection sheet according to claim 3, wherein: the length of each vertical bending section (131) is larger than or equal to the distance between the first connecting sheet (11) and the second connecting sheet (12) in the vertical direction.
5. An electrical connection sheet according to claim 4, wherein: the horizontal bending sections (132) are equal in length.
6. An electrical connection sheet according to claim 4, wherein: and a grid film is arranged between the adjacent vertical bending sections (131).
7. An electrical connection sheet according to claim 3, wherein: the sum of the lengths of all the vertical bending sections (131) is equal to the distance between the first connecting sheet (11) and the second connecting sheet (12) in the vertical direction.
8. An electrical connection sheet according to claim 2, wherein: the second connecting sheet (12) is provided with a bolt hole (121) and is connected with an output pole support (2) on the end plate through a bolt, and the first connecting sheet (11) is electrically connected to a pole of the battery core (3).
9. An electrical connection sheet according to claim 1, wherein: the joints of the first connecting piece (11), the second connecting piece (12) and the buffer connecting piece (13) are provided with chamfers.
10. A battery module, its characterized in that: comprising an electrical connection sheet (1) as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221954982.4U CN218242162U (en) | 2022-07-27 | 2022-07-27 | Electric connecting sheet and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221954982.4U CN218242162U (en) | 2022-07-27 | 2022-07-27 | Electric connecting sheet and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218242162U true CN218242162U (en) | 2023-01-06 |
Family
ID=84677764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221954982.4U Active CN218242162U (en) | 2022-07-27 | 2022-07-27 | Electric connecting sheet and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218242162U (en) |
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2022
- 2022-07-27 CN CN202221954982.4U patent/CN218242162U/en active Active
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