CN117238997B - Conductive connecting piece and battery piece assembly - Google Patents
Conductive connecting piece and battery piece assembly Download PDFInfo
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- CN117238997B CN117238997B CN202311492910.1A CN202311492910A CN117238997B CN 117238997 B CN117238997 B CN 117238997B CN 202311492910 A CN202311492910 A CN 202311492910A CN 117238997 B CN117238997 B CN 117238997B
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- 230000007704 transition Effects 0.000 claims abstract description 33
- 239000000853 adhesive Substances 0.000 claims description 31
- 230000001070 adhesive effect Effects 0.000 claims description 26
- 238000000926 separation method Methods 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000009472 formulation Methods 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 2
- 230000001965 increasing effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
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- 238000012986 modification Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
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- 239000003292 glue Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- YCKOAAUKSGOOJH-UHFFFAOYSA-N copper silver Chemical compound [Cu].[Ag].[Ag] YCKOAAUKSGOOJH-UHFFFAOYSA-N 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000008569 process Effects 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention provides a conductive connecting piece and a battery piece assembly, wherein the conductive connecting piece is suitable for connecting adjacent battery pieces and comprises a transition part, a first connecting part positioned on a first side of the transition part and a second connecting part positioned on a second side of the transition part; the first connecting part is provided with a plurality of first connecting teeth, the first connecting teeth are distributed along a first direction from the first edge of the transition part, and each first connecting tooth extends along a second direction and is electrically connected with the first battery piece; the second connecting part is provided with a plurality of second connecting teeth which are distributed along the first direction from the second edge of the transition part, and each second connecting tooth extends along the second direction and is electrically connected with the second battery piece; the first direction is perpendicular to the second direction, and the first battery piece is adjacent to the second battery piece.
Description
Technical Field
The invention mainly relates to the field of photovoltaic cells, in particular to a conductive connecting piece and a cell assembly.
Background
In the field of photovoltaic cells, electrical connection between adjacent cells is typically achieved by means of a solder strip, which extends from one cell to the adjacent other cell in the main grid direction and is simultaneously soldered to the main grid lines of the surfaces of the adjacent two cells. However, the contact area between the solder strip and the main grid line is smaller in this case, which leads to a higher contact resistance on the one hand, which influences the power of the component, and on the other hand, which is a high-risk location for the long-term reliability of the component. In addition, because the welding strip needs to connect two opposite sides of adjacent battery pieces under normal conditions, the welding strip can be bent to form a structure similar to a Z shape in the installation process, and the bending position of the welding strip can be in hard contact with the edges of the battery pieces, so that the battery pieces can be broken, and the product yield is affected. In order to solve the above problems, the most commonly used means in the prior art is to spot glue between the welding strip and the battery piece and to set additional connecting components, however, the process of spot glue is complex and difficult to locate, and has high requirements on the operation of workers, thus increasing the production cost.
Disclosure of Invention
The invention aims to provide a conductive connecting piece and a battery piece assembly which are convenient to position and cost-saving so as to omit a welding strip.
In order to solve the technical problems, the invention provides a conductive connecting piece which is suitable for connecting adjacent battery pieces, wherein the conductive connecting piece comprises a transition part, a first connecting part positioned on a first side of the transition part and a second connecting part positioned on a second side of the transition part; the first connecting part is provided with a plurality of first connecting teeth which are positioned at the first edge of the transition part and are distributed along the first direction, and each first connecting tooth extends along the second direction and is electrically connected with the first battery piece; the second connecting part is provided with a plurality of second connecting teeth which are positioned at the second edge of the transition part and are distributed along the first direction, and each second connecting tooth extends along the second direction and is electrically connected with the second battery piece; the first direction is perpendicular to the second direction, and the first battery piece is adjacent to the second battery piece.
In an embodiment of the present application, at least a portion of surfaces of each of the plurality of first connection teeth and the plurality of second connection teeth are covered with conductive adhesive, and the plurality of first connection teeth and the plurality of second connection teeth are electrically connected to at least a surface of the first battery and the second battery respectively through the conductive adhesive.
In an embodiment of the present application, each of at least one surface of the first battery piece and the second battery piece includes a plurality of main grid lines and a plurality of auxiliary grid lines, wherein the plurality of main grid lines are arranged along a first direction, and the plurality of auxiliary grid lines are arranged along a second direction; the first connecting teeth are electrically connected with the main grid lines on at least one surface of the first battery piece through conductive adhesive; the plurality of second connecting teeth are electrically connected with the plurality of main grid lines on at least one surface of the second battery piece through conductive adhesive.
In an embodiment of the present application, the plurality of first connection teeth and the plurality of second connection teeth are provided with a relief on a surface covered with the conductive adhesive.
In an embodiment of the present application, a preset distance is provided between the first edge and the second edge in a third direction, the preset distance is greater than or equal to a thickness of the battery piece, and the third direction is perpendicular to a plane formed by the first direction and the second direction.
In an embodiment of the present application, the conductive adhesive is formed by immersing the first connection portion and the second connection portion in a conductive adhesive preparation and then removing the first connection portion and the second connection portion.
In an embodiment of the present application, the plurality of first connection teeth and the plurality of second connection teeth are provided with a separation film not adhered and/or infiltrated with the conductive paste on a surface not covered with the conductive paste.
In an embodiment of the present application, the material of the isolation film is polytetrafluoroethylene resin or polyether polyol resin.
The invention also provides a battery piece assembly, which comprises: the plurality of battery pieces comprise a plurality of groups of adjacent first battery pieces and second battery pieces; the conductive connection member according to any one of the preceding embodiments, wherein the first connection portion of the conductive connection member is electrically connected to the first battery piece, and the second connection portion of the conductive connection member is electrically connected to the second battery piece.
In an embodiment of the present application, when at least a portion of surfaces of the first plurality of connection teeth and the second plurality of connection teeth are covered with the conductive paste, the first plurality of connection teeth and the second plurality of connection teeth are electrically connected to at least a surface of the first battery and the second battery, respectively, through the conductive paste.
In an embodiment of the present application, when at least one surface of the first and second battery pieces includes a plurality of main grid lines and a plurality of sub grid lines: the first connecting teeth are electrically connected with the main grid lines on at least one surface of the first battery piece; the plurality of second connection teeth are electrically connected with the plurality of main grid lines on at least one surface of the second battery piece.
Compared with the prior art, the conductive connecting piece and the battery piece assembly provided by the invention have the advantages that the first connecting teeth and the second connecting teeth are connected through the transition parts, the intervals among the first connecting teeth, the intervals among the second connecting teeth and the intervals among the main grid lines on the surface of the battery piece are corresponding, only single positioning is needed, the installation time is saved, the conductive adhesive can play a buffering effect besides conductivity, and the battery piece breakage is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the invention. In the accompanying drawings:
FIG. 1 is a top view of a conductive connector according to a first embodiment of the present application;
FIG. 2 is a front view of a conductive connector according to one embodiment of the present application;
FIG. 3 is a top view of a conductive connector and battery tab connection according to one embodiment of the present application;
FIG. 4 is a front view of a conductive connector and battery tab connection according to one embodiment of the present application;
fig. 5 is a front view of a conductive connector according to a second embodiment of the present application;
fig. 6 is a front view of a conductive connector of a third embodiment of the present application; and
fig. 7 is a top view of a conductive connector according to a fourth embodiment of the present application.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present application, and it is obvious to those skilled in the art that the present application may be applied to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.
As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that, where azimuth terms such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., indicate azimuth or positional relationships generally based on those shown in the drawings, only for convenience of description and simplification of the description, these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application. Furthermore, although terms used in the present application are selected from publicly known and commonly used terms, some terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present application be understood, not simply by the actual terms used but by the meaning of each term lying within.
It will be understood that when an element is referred to as being "on," "connected to," "coupled to," or "contacting" another element, it can be directly on, connected or coupled to, or contacting the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," or "directly contacting" another element, there are no intervening elements present. Likewise, when a first element is referred to as being "electrically contacted" or "electrically coupled" to a second element, there are electrical paths between the first element and the second element that allow current to flow. The electrical path may include a capacitor, a coupled inductor, and/or other components that allow current to flow even without direct contact between conductive components.
Fig. 1 is a top view of a conductive connector according to an embodiment of the present application, fig. 2 is a front view of the conductive connector according to an embodiment of the present application, fig. 3 is a top view of a conductive connector according to an embodiment of the present application and a battery piece, and fig. 4 is a front view of the conductive connector according to an embodiment of the present application and a battery piece. Referring now to fig. 1-4 in combination, the present invention provides a conductive connector 100 adapted to connect adjacent battery cells 10 (see fig. 3-4), the conductive connector 100 including a first connector portion 110, a second connector portion 120, and a transition portion 130, the first connector portion 110 being located on a first side (left side as viewed in fig. 1-2) of the transition portion 130, and the second connector portion 120 being located on a second side (right side as viewed in fig. 1-2) of the transition portion 130.
Specifically, the first connection portion 110 includes a plurality of first connection teeth 111 located at the first edge 131 of the transition portion 130 and extending along the first direction AA ', wherein each of the first connection teeth 111 extends along the second direction BB ' perpendicular to the first direction AA '. That is, the extending direction of the single first connection tooth 111 is the second direction BB ', and the plurality of first connection teeth 111 are arranged along the first direction AA' on the first edge 131 of the transition portion 130, and the first direction AA 'is perpendicular to the second direction BB'.
Likewise, the second connection 120 includes a plurality of second connection teeth 121 located at the second edge 132 of the transition 130 and extending in the first direction AA ', wherein each second connection tooth 121 extends in the second direction BB'. Referring further to fig. 3-4, each first connection tooth 111 is electrically connected to a first battery piece 10a, each second connection tooth 121 is electrically connected to a second battery piece 10b, and the first battery piece 10a and the second battery piece 10b are adjacent.
In some embodiments, the conductive connecting member 100 is an integrally formed structure, and is integrally made of a metal sheet or foil with high conductivity, high ductility and high strength, so that the conductive connecting member is convenient to produce and reduces the production cost and difficulty. Specifically, the conductive connecting member 100 may be made of copper, copper tin, copper silver, etc., which is not particularly limited herein.
The battery sheet 10 has a plurality of main grid lines 11 and a plurality of sub grid lines 12 on at least one surface thereof. As shown in fig. 1 to 4, in a preferred embodiment of the present application, both surfaces of the first battery cell 10a include a plurality of main grid lines 11a and a plurality of sub grid lines 12a, and both surfaces of the second battery cell 10b include a plurality of main grid lines 11b and a plurality of sub grid lines 12b. Taking the first battery piece 10a as an example, the front surface of the first battery piece 10a is provided with a plurality of main grid lines 11a arranged along the first direction AA ', and a plurality of auxiliary grid lines 12a arranged along the second direction BB', and a plurality of first connection teeth 111 of the conductive connection piece 100 are electrically connected with a plurality of main grid lines 11a on the front surface of the first battery piece 10 a. Similarly, the back surface of the second battery piece 10b has a plurality of main gate lines 11b arranged along the first direction AA ', and a plurality of sub gate lines 12b arranged along the second direction BB', and the plurality of second connection teeth 121 of the conductive connection member 100 are electrically connected to the plurality of main gate lines 11b on the back surface of the first battery piece 10 b.
Further, in order to ensure a flat arrangement of the plurality of battery cells 10 during actual use, the first battery cell 10a and the second battery cell 10b are located in the planes of the first direction AA 'and the second direction BB', and the first connection portion 110 and the second connection portion 120 of the conductive connector 100 are adapted to connect the front surface of the first battery cell 10a and the back surface of the second battery cell 10b, respectively, so it can be understood that in this embodiment, the first connection portion 110 and the second connection portion 120 have a height difference in the third direction CC ', and the third direction CC' is perpendicular to the planes of the first direction AA 'and the second direction BB'. That is, the first edge 131 and the second edge 132 of the transition portion 130 have a preset distance H therebetween in the third direction CC ', and the preset distance H is greater than or equal to the thickness of the battery sheet 10 in the third direction CC'. Referring to fig. 2, the conductive connector 100 has a front view in a "Z" like shape.
It will be appreciated that, in other embodiments, the plurality of first connection teeth 111 and the plurality of second connection teeth 121 may be electrically connected to the back surface of the first battery 10a and the front surface of the second battery 10b, respectively, or the front surface (back surface) of the first battery 10a and the front surface (back surface) of the second battery 10b, respectively, which is not particularly limited herein. It should be noted, however, that when the plurality of first connection teeth 111 and the plurality of second connection teeth 121 are electrically connected to the same surface of the first battery 10a and the second battery 10b, respectively, the conductive connection member 100 is entirely flat, and the first edge 131 and the second edge 132 are located at the same height in the third direction CC' at this time.
Fig. 5 is a front view of a conductive connector according to a second embodiment of the present application. In the embodiment shown in fig. 5, the conductive connector 200 also includes a first connector 210, a second connector 220, and a transition 230, the first connector 210 being located on a first side of the transition 230 and having a plurality of first connector teeth 211, and the second connector 220 being located on a second side of the transition 230 and having a plurality of second connector teeth 221.
Unlike the first embodiment, in the present preferred embodiment, in order to further enhance the conductivity of the conductive connection member 200, at least a portion of the surfaces of each of the plurality of first connection teeth 211 and the plurality of second connection teeth 221 is covered with the conductive paste 240, and the plurality of first connection teeth 211 and the plurality of second connection teeth 221 are electrically connected to the front surface of the first battery 10a (refer to fig. 3-4) and the rear surface of the second battery 10b (refer to fig. 3-4), respectively, through the conductive paste 240. The conductive adhesive 240 plays a role of buffering in addition to conductivity, and prevents the first and second battery pieces 10a and 10b from being crushed at the bent portions of the conductive connection part 200.
The conductive adhesive 240 is formed by immersing the first connection part 210 and the second connection part 220 in a conductive adhesive agent, respectively, and then taking out the conductive adhesive agent, and the conductive adhesive agent attached to the surfaces of the first connection part 210 and the second connection part 220 is solidified to form an adhesive with a certain elasticity. Separate soaking allows the conductive paste 240 to be attached only to the first and second connection parts 210 and 220, i.e., the parts that need to be in contact with the battery cells 10 (shown with reference to fig. 3-4), while the transition part 230 does not need soaking, and can also reduce costs. It can be understood that the greater the thickness of the conductive adhesive 240, the better the buffering effect, but the manufacturing cost will be increased, and the operator can adjust according to the actual requirement.
Further, in this embodiment, the first connection teeth 211 and the second connection teeth 221 are further provided with a separation film 250 on the surface not covered by the conductive adhesive 240, and the separation film 250 is made of a material that is not adhered and/or infiltrated with the conductive adhesive 240, such as polytetrafluoroethylene resin or polyether polyol resin.
Specifically, in this embodiment, the lower surfaces of the plurality of first connection teeth 211 and the upper surfaces of the plurality of second connection teeth 221 are provided with conductive adhesive 240, which are adapted to be electrically connected to the adjacent battery cells, respectively, and the upper surfaces of the plurality of first connection teeth 211 and the lower surfaces of the plurality of second connection teeth 221 are provided with separation films 250. After the first connection part 210 and the second connection part 220 are respectively immersed in the conductive adhesive preparation and taken out, the surface provided with the isolation film 250 is not covered with the conductive adhesive 240, thereby reducing unnecessary use amount of the conductive adhesive preparation and saving cost.
The remaining technical features of the conductive connector 200 in the second embodiment are substantially the same as those of the first embodiment, and reference is made to the foregoing, and the description thereof will not be repeated.
Fig. 6 is a front view of a conductive connector according to a third embodiment of the present application. In the embodiment shown in fig. 6, the conductive connector 300 also includes a first connector 310, a second connector 320, and a transition 330, the first connector 310 being located on a first side of the transition 330 and having a plurality of first connector teeth 311, and the second connector 320 being located on a second side of the transition 330 and having a plurality of second connector teeth 321. The lower surfaces of the plurality of first connection teeth 311 and the upper surfaces of the plurality of second connection teeth 321 are provided with conductive paste 340, which are respectively adapted to be electrically connected with the adjacent battery cells, and the upper surfaces of the plurality of first connection teeth 311 and the lower surfaces of the plurality of second connection teeth 321 are provided with separation films 350.
Unlike the second embodiment, the plurality of first coupling teeth 311 and the plurality of second coupling teeth 321 in the present embodiment are provided with the ridge 360 on the surface covered with the conductive paste 340 (i.e., the lower surface of the first coupling teeth 311 and the upper surface of the second coupling teeth 321). The thickness of the conductive adhesive 340 attached to the surface of the first connection part 310 and the second connection part 320 after the conductive adhesive agent is soaked in the conductive adhesive agent and taken out is increased by the convex pattern 360, so that the effect of enhancing the buffering effect is achieved, and the density and depth of the convex pattern 360 can be adjusted by a worker according to actual demands, so that the thickness of the conductive adhesive 340 is adjusted. In addition, the ribs 360 can increase the bonding area between the battery plate and the conductive connecting member 300, thereby increasing the bonding strength and improving the connection reliability.
The remaining technical features of the conductive connector 300 in the third embodiment are substantially the same as those of the first and second embodiments, and reference is made to the foregoing, and the description thereof will not be repeated.
Fig. 7 is a top view of a conductive connector and battery tab connection according to a fourth embodiment of the present application. Referring to fig. 7, in this embodiment, the conductive connector 400 also includes a first connection portion 410, a second connection portion 420 (covered and not directly shown), and a transition portion 430, the first connection portion 410 being located on a first side of the transition portion 430 and having a plurality of first connection teeth 411, and the second connection portion 420 being located on a second side of the transition portion 430 and having a plurality of second connection teeth 421. Unlike the previous embodiments, the number of main grid lines 21 at the portion of the edge of the battery piece 20 where the edge is adapted to contact the conductive connection member 400 is greater than the remaining portion of the middle region of the battery piece 20, and accordingly, the number of first connection teeth 411 and second connection teeth 421 (which are covered and not directly shown) in the conductive connection member 400 is increased so as to be able to be electrically connected with the main grid lines 21 correspondingly. This arrangement can increase the contact area of the conductive connection 400 with the battery piece 20, thereby reducing contact resistance and resistance loss and improving the assembly power.
The invention also provides a battery cell assembly comprising a plurality of battery cells 10/20 and a conductive connector 100/200/300/400 as in any of the previous embodiments. Referring to the embodiment shown in fig. 3 to 4, the plurality of battery cells 100 includes a plurality of sets of adjacent first battery cells 10a and second battery cells 10b, and the first connection portion 110 and the second connection portion 120 of the conductive connection member 100 are electrically connected to the first battery cells 10a and the second battery cells 10b, respectively.
Further, in the preferred embodiment shown in fig. 5, the conductive connection member 200 further includes a conductive paste 240, and the upper surface of the first battery cell 10a includes a plurality of main grid lines 11a and a plurality of sub grid lines 12a, and the lower surface of the second battery cell 10b includes a plurality of main grid lines 11b and a plurality of sub grid lines 12b, and at this time, the plurality of first connection teeth 211 and the plurality of second connection teeth 221 are electrically connected to the main grid lines 11a, 11b of the surfaces of the first battery cell 10a and the second battery cell 10b, respectively, through the conductive paste 240.
While the basic concepts have been described above, it will be apparent to those skilled in the art that the above disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations of the present application may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this application, and are therefore within the spirit and scope of the exemplary embodiments of this application.
Meanwhile, the present application uses specific words to describe embodiments of the present application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present application. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present application may be combined as suitable.
Likewise, it should be noted that in order to simplify the presentation disclosed herein and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are presented in the claims are required for the subject application. Indeed, less than all of the features of a single embodiment disclosed above.
While the present application has been described with reference to the present specific embodiments, those of ordinary skill in the art will recognize that the above embodiments are for illustrative purposes only, and that various equivalent changes or substitutions can be made without departing from the spirit of the present application, and therefore, all changes and modifications to the embodiments described above are intended to be within the scope of the claims of the present application.
Claims (8)
1. A conductive connecting piece suitable for connecting adjacent battery pieces, characterized in that the conductive connecting piece comprises a transition part, a first connecting part positioned on a first side of the transition part and a second connecting part positioned on a second side of the transition part; wherein,
the first connecting part is provided with a plurality of first connecting teeth which are positioned at the first edge of the transition part and are distributed along a first direction, and each first connecting tooth extends along a second direction and is electrically connected with the first battery piece;
the second connecting part is provided with a plurality of second connecting teeth which are positioned at the second edge of the transition part and are distributed along the first direction, and each second connecting tooth extends along the second direction and is electrically connected with a second battery piece;
the first direction is perpendicular to the second direction, and the first battery piece is adjacent to the second battery piece; and, in addition, the processing unit,
the surfaces of at least one part of each of the first connecting teeth and the second connecting teeth are covered with conductive adhesive, and the first connecting teeth and the second connecting teeth are respectively electrically connected with at least one surface of the first battery and the second battery through the conductive adhesive;
the surface of the first connecting teeth and the second connecting teeth, which is not covered by the conductive adhesive, is provided with a separation film which is not adhered and/or infiltrated with the conductive adhesive, and the separation film is made of polytetrafluoroethylene resin or polyether polyol resin.
2. The conductive connector of claim 1, wherein at least one surface of each of the first and second battery plates comprises a plurality of primary and secondary grids, wherein,
the plurality of main grid lines are arranged along the first direction, and the plurality of auxiliary grid lines are arranged along the second direction;
the first connecting teeth are electrically connected with the main grid lines on at least one surface of the first battery piece through the conductive adhesive;
the plurality of second connecting teeth are electrically connected with the plurality of main grid lines on at least one surface of the second battery piece through the conductive adhesive.
3. The conductive connector of claim 1, wherein the plurality of first connection teeth and the plurality of second connection teeth are provided with ridges on a surface that covers the conductive paste.
4. The conductive connector of claim 1, wherein the first edge and the second edge have a predetermined distance therebetween in a third direction, the predetermined distance being greater than or equal to a thickness of the battery piece, the third direction being perpendicular to a plane formed by the first direction and the second direction.
5. The conductive connector of claim 4, wherein the conductive paste is formed by immersing the first and second connection portions in a conductive paste formulation and then removing the conductive paste formulation.
6. A battery cell assembly, comprising:
the battery pack comprises a plurality of battery pieces, a plurality of battery pieces and a plurality of battery modules, wherein the battery pieces comprise a plurality of groups of adjacent first battery pieces and second battery pieces; and
the conductive connector as claimed in any one of claims 1 to 5, wherein a first connection portion of the conductive connector is electrically connected to the first battery tab and a second connection portion of the conductive connector is electrically connected to the second battery tab.
7. The battery cell assembly of claim 6, wherein the plurality of first connection teeth and the plurality of second connection teeth are electrically connected to at least one surface of the first battery and the second battery, respectively, by the conductive paste when at least a portion of the surfaces of the plurality of first connection teeth and the plurality of second connection teeth are covered with the conductive paste.
8. The battery cell assembly of claim 7, wherein when at least one surface of the first and second battery cells comprises a plurality of primary and secondary grids:
the first connecting teeth are electrically connected with the main grid lines on at least one surface of the first battery piece;
the plurality of second connection teeth are electrically connected with the plurality of main grid lines on at least one surface of the second battery piece.
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