CN215911554U - Connecting piece, battery module and battery package - Google Patents
Connecting piece, battery module and battery package Download PDFInfo
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- CN215911554U CN215911554U CN202121930063.9U CN202121930063U CN215911554U CN 215911554 U CN215911554 U CN 215911554U CN 202121930063 U CN202121930063 U CN 202121930063U CN 215911554 U CN215911554 U CN 215911554U
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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 utility model discloses a connecting piece, a battery module and a battery pack, wherein the connecting piece is used for electrically connecting a lug of a battery core, and comprises: a flat-plate-shaped body and a turnover part group. The turnover part group comprises at least one turnover part, the turnover part is connected to the side wall of the edge of the body in a turnover mode, the turnover part has a first state and a second state, a clamping space suitable for clamping a pole lug is defined between the second state turnover part group and the body, and the first state is lower than the second state, the turnover part is far away from one end of the body and is relatively far away from the body. The connecting piece provided by the embodiment of the utility model has a simple structure, does not need other auxiliary compression structures, does not need to additionally increase a welding protection sheet on the upper side face of the lug, reduces the number of structural parts, saves the material consumption to a certain extent, cancels the feeding process of the welding protection sheet, and can improve the production efficiency.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a connecting piece, a battery module and a battery pack.
Background
In the related technology, the connection mode of the tab and the flexible connection structure is that after the tab and the flexible connection sheet are stacked, a protection sheet is additionally laminated and welded on the upper part, and then ultrasonic welding is performed. This setting has the less than of structure spare a large number, has also increased the material loading process of welding the screening glass simultaneously, reduces production efficiency.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a connector, which has a simple structure, does not require any additional auxiliary pressing structure, does not require additional welding protection sheet on the upper side of the tab, reduces the number of structural members, saves material consumption to a certain extent, and can improve production efficiency by eliminating the welding protection sheet feeding process.
The utility model also provides a battery module with the connecting piece.
The utility model also provides a battery pack with the battery module.
According to the embodiment of the first aspect of the present invention, the connecting member is used for electrically connecting the tabs of the battery cells, and the connecting member includes: a body in the form of a flat plate; the turnover part group, the turnover part group includes at least one turnover part, the turnover part can turn over connect in the border lateral wall of body, the turnover part has first state and second state the second state turnover part group with inject between the body and be suitable for pressing from both sides and establish the clamp space of utmost point ear, for the second state under the first state keeping away from of turnover part the one end of body is more kept away from relatively the body.
According to the connecting piece provided by the embodiment of the utility model, the connecting piece is arranged to comprise the body and the folding part connected to the body in a folding manner, when the connecting piece is connected with the lug of the battery cell, the lug can be placed on the body of the connecting piece, and then the folding part is folded to the second state to compress the lug, so that the lug is clamped in the clamping space defined by the body and the folding part group, and then the lug and the connecting piece can be conveniently connected. The simple structure of this connecting piece just need not other supplementary compact structure, need not to increase the welding screening glass in addition on utmost point ear, and structure quantity reduces, saves the material quantity simultaneously to a certain extent to cancel welding screening glass material loading process, can improve production efficiency.
According to some embodiments of the present invention, an included angle between the folded portion and the body in the first state is 180 degrees and 120 degrees, and the folded portion is parallel to the body in the second state.
According to some embodiments of the utility model, the connector is a one-piece moulding.
According to some embodiments of the utility model, the folded part is connected with the side wall of the edge of the body through a connecting part, and the thickness of the connecting part is not more than that of the body and not more than that of the folded part.
In some optional embodiments of the utility model, the thickness of the folded part, the thickness of the body and the thickness of the connecting part are the same.
According to some embodiments of the utility model, the folded part is connected with the side wall of the edge of the body through a connecting part, the connecting part comprises a plurality of connecting ribs, and the connecting ribs are sequentially arranged at intervals along the extending direction of the connecting line of the folded part and the body.
In some alternative embodiments of the utility model, the width of the tie bars ranges from 0.6 to 1.5 mm.
In some alternative embodiments of the present invention, the distance between two adjacent connecting ribs is in the range of 2-5 mm.
According to some embodiments of the utility model, the folded part is connected with the side wall of the edge of the body through a connecting part, and the connecting part is formed into a long strip shape extending along the extending direction of the connecting line of the folded part and the body.
In some optional embodiments of the present invention, the thickness of the connection part gradually decreases in a direction from both sides of the connection part in the width direction to a central axis of the connection part.
A battery module according to an embodiment of a second aspect of the utility model includes: at least one cell comprising a tab; a connecting member according to the embodiment of the first aspect of the present invention, the connecting member being connected to the tab.
According to the battery module provided by the embodiment of the utility model, by arranging the connecting piece, when the connecting piece is connected with the lug of the battery cell, other auxiliary compression structures are not needed, a welding protection sheet is not needed to be additionally arranged on the lug, the number of structural parts is reduced, the material consumption is saved to a certain extent, the feeding process of the welding protection sheet is cancelled, and the production efficiency can be improved.
According to some embodiments of the utility model, the tab is welded or riveted to the connector.
According to some embodiments of the utility model, at least a part of the end surface of the free end of the tab constitutes a welding surface, which is welded to the connecting element.
A battery pack according to an embodiment of the third aspect of the utility model includes: the battery module according to the above-described second aspect embodiment of the utility model.
According to the battery pack provided by the embodiment of the utility model, by arranging the battery module, when the connecting piece is connected with the lug of the battery core, other auxiliary compression structures are not needed, a welding protection sheet is not needed to be additionally arranged on the lug, the number of structural parts is reduced, the material consumption is saved to a certain extent, the feeding process of the welding protection sheet is cancelled, and the production efficiency can be improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic illustration of a connector according to some embodiments of the present invention, wherein the connector is in a first state;
FIG. 2 is a schematic view of the connection of FIG. 1 in a second state;
fig. 3 is an assembly view of the connector and tab of fig. 1;
FIG. 4 is an enlarged view at A in FIG. 3;
FIG. 5 is a schematic illustration of a connector according to further embodiments of the present invention, wherein the connector is in a first state;
FIG. 6 is a schematic view of the connector of FIG. 5 in a second state;
fig. 7 is an assembly view of the connector and tab of fig. 5;
FIG. 8 is an enlarged view at B in FIG. 7;
fig. 9 is a sectional view of a tab piece of a tab according to an embodiment of the present invention.
Reference numerals:
an electric core 1; a tab 11; a welding surface 10; a pole tab 110; a non-conductive film 111; a conductive layer 112;
a connecting piece 2; a clamping space 20; a body 21; a tab connection part 211; the pole connecting portion 212; a fold-over portion 22; a connecting portion 221; the tie bars 2210.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A connector 2 according to an embodiment of the present invention is described below with reference to fig. 1 to 8.
As shown in fig. 1 to 8, according to the connecting member 2 of the embodiment of the first aspect of the present invention, the connecting member 2 is used for electrically connecting the tabs 11 of the battery, the connecting member 2 is an electrically conductive member, and the connecting member 2 may be a copper member, an aluminum member, a copper alloy member, an aluminum alloy member, or the like. The connector 2 includes: a body 21 and a set of turnups.
The body 21 is flat, the folded part group includes at least one folded part 22, for example, the folded part group may include one folded part 22, the folded part group may also include a plurality of (for example, two) folded parts 22, and the folded parts 22 may be connected to the side wall of the edge of the body 21 in a foldable manner. When the folded part group includes a plurality of folded parts 22, the plurality of folded parts 22 may be disposed at intervals in the circumferential direction of the body 21.
The folding part 22 has a first state and a second state, when the folding part 22 is in the second state, a clamping space 20 suitable for clamping the tab 11 can be defined between the folding part group and the body 21, after the tab 11 is placed on the body 21, the folding part 22 can be folded from the first state to the second state relative to the body 21, so that the folding part 22 is pressed on the tab 11, and the clamping space 20 for clamping the tab 11 is defined between the folding part 22 and the body 21, so that the tab 11 can be pressed and positioned, and the tab 11 and the connecting piece 2 can be conveniently connected in a subsequent step.
For turning over the first state that folding portion 22 is in the second state, the one end of turning over portion 22 that is far away from body 21 is more relatively more far away from body 21 under folding portion 22 is in the first state, like this when folding portion 22 is in the first state, bigger angle is opened with body 21 to folding portion 22, for example the contained angle between folding portion 22 and body 21 can set up great, thereby when folding portion 22 is in the first state, have great contained angle between every folding portion 22 in the folding portion group and body 21, can dodge out great operating space like this, thereby conveniently place utmost point ear 11 on body 21 before welding connecting piece 2 with utmost point ear 11.
When the folded part group comprises one folded part 22, and the one folded part 22 is in the second state, the clamping space 20 is defined between the one folded part 22 and the body 21; when the folded part group includes a plurality of folded parts 22, and all the folded parts 22 of the folded part group are in the second state, the above-mentioned sandwiched space 20 is defined between all the folded parts 22 of the folded part group and the main body 21.
It will be appreciated that, in the connector 2 which has just been manufactured, all the folds 22 of the connector 2 are in the first state, so that the connector 2 is simple in structure and easy to manufacture. When the connecting piece 2 is used and the tab 11 is connected with the connecting piece 2, all the folded parts 22 of the connecting piece 2 are folded relative to the body 21 to a second state by folding all the folded parts 22 of the connecting piece 2, so that the tab 11 is conveniently connected.
It is to be understood that the term "plurality" as used herein means two or more.
According to the connecting piece 2 of the embodiment of the utility model, by arranging the connecting piece 2 to include the body 21 and the folded part 22 connected to the body 21 in a foldable manner, when the connecting piece 2 is connected with the tab 11 of the battery cell 1, the tab 11 can be placed on the body 21 of the connecting piece 2, and then the folded part 22 is folded to the second state to compress the tab 11, so that the tab 11 is clamped in the clamping space 20 defined by the body 21 and the folded part group, and then the tab 11 and the connecting piece 2 can be conveniently connected. This connecting piece 2's simple structure just need not other supplementary compact structure, need not to increase the welding protection piece in addition on utmost point ear 11 side face, and structure quantity reduces, saves the material quantity simultaneously to a certain extent to cancel welding protection piece material loading process, can improve production efficiency.
According to some embodiments of the present invention, referring to fig. 1, fig. 2, fig. 5 and fig. 6, when the folded portion 22 is in the first state, the included angle between the folded portion 22 and the main body 21 may be 120 ° or 180 °, for example, the included angle between the folded portion 22 and the main body 21 may be 150 °, 160 °, 170 °, 180 °, and the like, so that when the folded portion 22 is in the first state, each folded portion 22 in the group of folded portions has a larger included angle with the main body 21, so that a larger operation space can be avoided. For example, when the folded portion 22 is in the first state, the included angle between the folded portion 22 and the body 21 may be 180 °, and at this time, the whole connecting member 2 may be in a sheet structure, so that the connecting member 2 has a simple structure, and when the thickness of the folded portion 22 is the same as that of the body 21, the folded portion 22 and the body 21 may be located in the same plane. Therefore, a larger space can be avoided for placing the lug 11, the structure of the connecting piece 2 is simpler, and the processing, manufacturing and molding are convenient.
When the folded part 22 is in the second state, the folded part 22 is parallel to the body 21, so that the folded part 22 and the body 21 can better press the tab 11 together, and the tab 11 is better positioned in the clamping space 20 defined by the body 21 and the folded part group, so that the movement of the tab 11 relative to the connecting piece 2 can be further reduced when the tab 11 is subsequently connected with the connecting piece 2, and the convenience and reliability of the connection operation are improved.
According to some embodiments of the present invention, referring to fig. 1-8, the connector 2 may be an integrally formed piece. Therefore, the connecting piece 2 is simple in structure and convenient to machine and form, and machining and forming processes of the connecting piece 2 are reduced.
According to some embodiments of the present invention, referring to fig. 1 to 8, the folded portion 22 is connected to the edge sidewall of the body 21 by a connecting portion 221, and the thickness of the connecting portion 221 is not greater than the thickness of the body 21 and not greater than the thickness of the folded portion 22. For example, the thickness of the connection portion 221 may be the same as that of the folded portion 22, the thickness of the connection portion 221 may be the same as that of the body 21, the thickness of the connection portion 221 may be smaller than that of the folded portion 22, and the thickness of the connection portion 221 may be smaller than that of the body 21. By limiting the thickness of the connecting portion 221 to be not greater than the thickness of the body 21 and not greater than the thickness of the folded portion 22, the connecting portion 221 can have better deformability, so that the folded portion 22 can be conveniently folded relative to the body 21.
In some alternative embodiments of the present invention, referring to fig. 1-8, the thickness of the flap 22, the thickness of the body 21, and the thickness of the connecting portion 221 are all the same. Therefore, the whole thickness of the connecting piece 2 is uniform, the structure of the connecting piece 2 is simplified, and the connecting piece 2 is convenient to machine, manufacture and form. Moreover, when the folded part 22 is in the first state, the folded part 22, the connecting part 221 and the body 21 can be arranged in a coplanar manner, so that the connecting piece 2 is integrally in a flat plate-shaped structure, and the structure of the connecting piece 2 is further simplified.
According to some embodiments of the present invention, referring to fig. 1 to 4, the folded part 22 is connected to the edge side wall of the body 21 through a connecting part 221, and the connecting part 221 may include a plurality of connecting ribs 2210, and the plurality of connecting ribs 2210 are sequentially arranged at intervals along an extending direction of a connecting line between the folded part 22 and the body 21. By providing the connecting portion 221 with a plurality of connecting ribs 2210 arranged at intervals, the connecting portion 221 can have a better deformability, so that the folded portion 22 can be folded relative to the body 21 more easily.
In some alternative embodiments of the utility model, referring to FIG. 1, the width L of the tie bars 2210 may range from 0.6 to 1.5mm, e.g., the width L of the tie bars 2210 may be 0.8mm, 1.0mm, 1.2mm, etc. Therefore, the structural strength of the connecting rib 2210 can be ensured, and meanwhile, the connecting rib 2210 has better deformability, so that the turnover part 22 can be turned over conveniently relative to the body 21.
In some alternative embodiments of the present invention, referring to fig. 1, the spacing d between two adjacent connecting ribs 2210 may range from 2 to 5mm, for example, the spacing d between two adjacent connecting ribs 2210 may be 3mm, 4mm, and the like. Through setting up the interval d between two adjacent splice bars 2210 in above-mentioned within range, can make the interval between two adjacent splice bars 2210 set up rationally to make the holistic deformability of connecting portion 221 better, conveniently turn over the relative body 21 of turning over a portion 22, and can make the overall structure intensity of connecting portion 221 obtain guaranteeing.
For example, in the specific example of fig. 1-4, where the connector 2 includes a body 21 and a set of turns, the body 21 may be generally U-shaped. The body 21 may include two tab connection portions 211 and two pole connection portions 212, the two tab connection portions 211 may be opposite and spaced, and the pole connection portion 212 is connected to one side of the two tab connection portions 211 and is connected to the two tab connection portions 211. The two turnover parts are located on two opposite sides of the body 21, the two turnover parts are respectively connected to one sides, far away from each other, of the two tab connecting parts 211, and each turnover part comprises a turnover part 22. The folded part 22 of each folded part group is connected to the edge side wall of the corresponding tab connecting part 211 through the connecting part 221, and the connecting part 221 includes a plurality of connecting ribs 2210 arranged at intervals in sequence along the extending direction of the connecting line of the folded part 22 and the tab connecting part 211.
When the connecting piece 2 is connected with the electrode lugs 11 of the battery cells 1, the connecting piece 2 can be simultaneously connected with the electrode lugs 11 of the two battery cells 1, and the series connection of the two battery cells 1 can be realized. Specifically, the two tab connection portions 211 of the connection member 2 and the two turnover part groups respectively define two clamping spaces 20, when the connecting piece 2 is connected with the two tabs 11 of the two battery cells 1 (the tab 11 of the positive electrode of one battery cell 1 and the tab 11 of the negative electrode of the other battery cell 1), the tabs 11 of the two battery cells 1 are respectively placed at the two tab connecting parts 211 of the body 21, when the tab 11 includes the multi-layered stacked tab sheet 110, the multi-layered tab sheet 110 may be stacked on the tab connection part 211, the folded part 22 may be folded, such that the folded part 22 is folded with respect to the tab connection part 211 to a second state, therefore, the folded part 22 is pressed on the tab 11, so that the tab 11 can be positioned in the clamping space 20 defined by the folded part group and the corresponding tab connecting part 211, and the tab 11 and the connecting piece 2 can be conveniently connected in the following process.
According to some embodiments of the present invention, referring to fig. 5 to 8, the folded portion 22 is connected to the side wall of the edge of the body 21 by a connecting portion 221, and the connecting portion 221 is formed in a long shape extending along the extending direction of the connecting line between the folded portion 22 and the body 21. Therefore, the connecting part 221 is simple in structure, the connecting piece 2 is simple in overall structure, and machining and forming are facilitated.
In some alternative embodiments of the present invention, the thickness of the connection part 221 is gradually reduced in a direction from both sides of the connection part 221 in the width direction to the central axis of the connection part 221. Therefore, the connecting portion 221 has a good bending deformation capability, the folding portion 22 is folded relative to the body 21, and the overall structural strength of the connecting portion 221 is high.
For example, in the specific example of fig. 5-8, where the connector 2 includes a body 21 and a set of turns, the body 21 may be generally U-shaped. The body 21 may include two tab connection portions 211 and two pole connection portions 212, the two tab connection portions 211 may be opposite and spaced, and the pole connection portion 212 is connected to one side of the two tab connection portions 211 and is connected to the two tab connection portions 211. The number of the turnover part groups is two, the two turnover part groups are respectively connected to the two tab connecting parts 211, and each turnover part group comprises two turnover parts 22 which are oppositely arranged. The folded portion 22 of each folded portion group is connected to the edge side wall of the corresponding tab connecting portion 211 through the connecting portion 221, and the connecting portion 221 is formed in a long strip shape extending in the direction in which the connecting line between the folded portion 22 and the tab connecting portion 211 extends.
When the connecting piece 2 is connected with the electrode lugs 11 of the battery cells 1, the connecting piece 2 can be simultaneously connected with the electrode lugs 11 of the two battery cells 1, and the series connection of the two battery cells 1 can be realized. Specifically, the two tab connection portions 211 of the connection member 2 respectively define two clamping spaces 20 together with the two turnover part groups, and the two turnover parts 22 of each turnover part group are in contact with or spaced apart from each other. When the connecting member 2 is connected to the two tabs 11 of the two cells 1 (the tab 11 of the positive electrode of one of the cells 1 and the tab 11 of the negative electrode of the other cell 1), the tabs 11 of the two cells 1 are respectively placed on the two tab connecting portions 211 of the body 21, when the tabs 11 include the multi-layer overlapped tab 110, the multi-layer tab 110 can be stacked on the tab connecting portions 211, and the folded portion 22 is folded, so that the folded portion 22 is folded to the second state relative to the tab connecting portions 211, and the folded portion 22 is compressed on the tab 11, so that the tab 11 can be positioned in the clamping space 20 defined by the folded portion group and the corresponding tab connecting portion 211, and the subsequent connection of the tab 11 and the connecting member 2 is facilitated.
A battery module according to an embodiment of a second aspect of the utility model includes: cell 1 and connecting piece 2. The number of the battery cells 1 is at least one, the battery cells 1 include tabs 11, the connecting members 2 are the connecting members 2 according to the above first aspect of the present invention, the connecting members 2 are connected to the tabs 11, and the connecting members 2 and the tabs 11 are mechanically connected and also electrically connected. The connecting piece 2 can be connected to the tab 11 of one battery cell 1, and the connecting piece 2 can also be connected to the tabs 11 of two battery cells 1, so that the series connection of the two battery cells 1 can be realized.
According to the battery module provided by the embodiment of the utility model, by arranging the connecting piece 2, when the connecting piece 2 is connected with the lug 11 of the battery core 1, other auxiliary pressing structures are not needed, a welding protection sheet is not needed to be additionally arranged on the lug 11, the number of structural parts is reduced, the material consumption is saved to a certain extent, the welding protection sheet feeding process is eliminated, and the production efficiency can be improved.
According to some embodiments of the utility model, the tab 11 is welded or riveted to the connection member 2. Therefore, the connection between the tab 11 and the connecting piece 2 is conveniently realized, and the connection reliability can be ensured, wherein the connection reliability is the reliability of both mechanical connection and electrical connection. For example, the tab 11 and the connection member 2 may be connected by ultrasonic welding, laser welding, fusion welding, cold welding, or the like.
Optionally, the tab 11 and the connecting piece 2 can be connected by fusion welding, and in the process of connecting the tab 11 and the connecting piece 2 by fusion welding, a fusion zone can be formed at the welding part of the tab 11 and the connecting piece 2, so that fusion connection is formed between the tab 11 and the connecting piece 2, and potential safety hazards caused by the fact that metal powder formed by ultrasonic welding flows into the battery cell 1 can be avoided.
In addition, the pole ear 11 and the connecting piece 2 are connected by fusion welding, so that the manufacturing yield can be improved, when the structure is adopted for fusion welding connection, loss can be recovered by adopting modes of repair welding, re-welding and the like when a defect is caused by one-time welding, the product manufacturing procedure yield is improved, and the reject ratio is reduced.
For example, according to some embodiments of the present invention, at least a portion of the end surface of the free end of the tab 11 forms the welding surface 10, and the welding surface 10 and the connecting member 2 are fusion welded, so that not only the mechanical connection between the tab 11 and the connecting member 2 can be achieved, but also the electrical connection between the tab 11 and the connecting member 2 can be achieved, and the potential safety hazard caused by the metal powder formed by ultrasonic welding flowing into the battery cell 1 can be avoided, and meanwhile, when one-time welding has defects, the loss can be recovered by adopting repair welding, re-welding, and the like, so as to improve the product process yield and reduce the defect rate.
Alternatively, referring to fig. 9, the tab 11 may include a plurality of tab pieces 110 stacked in a thickness direction of the tab 11, each tab piece 110 may include a current collector in a sheet shape, and the current collector may be a composite current collector. The current collector may include a non-conductive film 111 stacked in a thickness direction of the tab sheet 110 and conductive layers 112 disposed at opposite sides of the non-conductive film 111 in the thickness direction, the non-conductive film 111 and the conductive layers 112 at both sides thereof being stacked in the thickness direction of the tab sheet 110, the non-conductive film 111 may be a polymer film, the conductive layers 112 may be metal conductive layers 112, and the conductive layers 112 may be, for example, a metal aluminum layer or a metal copper layer. The current collector of the pole lug plate 110 is arranged to be of a multilayer composite structure, so that the cost can be reduced, and meanwhile, the quality of the battery can be improved.
When the tab piece 110 of the tab 11 includes the composite current collector, when the welding surface 10 of the tab 11 is fusion-welded to the connector 2, the conductive layer 112 of each tab piece 110 may be electrically connected to the connector 2 in a convenient manner since the side wall surface of the conductive layer 112 of each tab piece 110 forms a part of the welding surface 10.
A battery pack according to an embodiment of the third aspect of the utility model includes: the battery module according to the above-described second aspect embodiment of the utility model.
According to the battery pack provided by the embodiment of the utility model, by arranging the battery module, when the connecting piece 2 is connected with the lug 11 of the battery core 1, other auxiliary pressing structures are not needed, a welding protection sheet is not needed to be additionally arranged on the lug 11, the number of structural parts is reduced, the material consumption is saved to a certain extent, the welding protection sheet feeding process is eliminated, and the production efficiency can be improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. A connector, wherein the connector is used for electrically connecting a tab of an electrical core, the connector comprising:
a body in the form of a flat plate;
the turnover part group, the turnover part group includes at least one turnover part, the turnover part can turn over connect in the border lateral wall of body, the turnover part has first state and second state the second state turnover part group with inject between the body and be suitable for pressing from both sides and establish the clamp space of utmost point ear, for the second state under the first state keeping away from of turnover part the one end of body is more kept away from relatively the body.
2. The connecting member as claimed in claim 1, wherein the angle between the folded portion and the body in the first state is 180 degrees and 120 degrees, and the folded portion is parallel to the body in the second state.
3. The connector of claim 1, wherein the connector is a one-piece molding.
4. The connector of claim 1, wherein the folded portion is connected to the side wall of the edge of the body by a connecting portion, and the thickness of the connecting portion is not greater than the thickness of the body and not greater than the thickness of the folded portion.
5. The connector according to claim 4, wherein the thickness of the folded portion, the thickness of the body, and the thickness of the connecting portion are the same.
6. The connecting piece of claim 1, wherein the folded portion is connected to the side wall of the edge of the body by a connecting portion, the connecting portion comprises a plurality of connecting ribs, and the connecting ribs are sequentially arranged at intervals along the extending direction of the connecting line between the folded portion and the body.
7. A connection piece according to claim 6, wherein the width of said ribs is in the range of 0.6-1.5 mm.
8. A connector according to claim 6, wherein the spacing between adjacent two of said ribs is in the range 2-5 mm.
9. The connector according to claim 1, wherein the folded portion is connected to the side wall of the edge of the body by a connecting portion, and the connecting portion is formed in a strip shape extending along a direction in which a connecting line between the folded portion and the body extends.
10. The connecting member according to claim 9, wherein a thickness of the connecting portion is gradually reduced in a direction from both sides in a width direction of the connecting portion to a central axis of the connecting portion.
11. A battery module, comprising:
at least one cell comprising a tab;
a connector according to any one of claims 1 to 10, connected to the tab.
12. The battery module according to claim 11, wherein the tab is welded or riveted to the connecting member.
13. The battery module according to claim 12, wherein at least a portion of the end surface of the free end of the tab constitutes a welding surface, and the welding surface is welded to the connection member.
14. A battery pack, comprising: the battery module according to any one of claims 11 to 13.
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| CN202121930063.9U CN215911554U (en) | 2021-08-17 | 2021-08-17 | Connecting piece, battery module and battery package |
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| CN202121930063.9U CN215911554U (en) | 2021-08-17 | 2021-08-17 | Connecting piece, battery module and battery package |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472897A (en) * | 2022-10-27 | 2022-12-13 | 厦门海辰储能科技股份有限公司 | Battery, battery module, battery pack and electric equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472897A (en) * | 2022-10-27 | 2022-12-13 | 厦门海辰储能科技股份有限公司 | Battery, battery module, battery pack and electric equipment |
| CN115472897B (en) * | 2022-10-27 | 2024-01-23 | 厦门海辰储能科技股份有限公司 | Battery, battery module, battery pack and electric equipment |
| WO2024088391A1 (en) * | 2022-10-27 | 2024-05-02 | 厦门海辰储能科技股份有限公司 | Battery, battery module, battery pack, and electrical device |
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Address after: 361006 room 201-1, complex building 5, No. 11, Butang Middle Road, industrial base, Xiamen Torch High tech Zone (Tongxiang), Xiamen, Fujian Patentee after: Xiamen Haichen Energy Storage Technology Co.,Ltd. Address before: 361006 room 201-1, complex building 5, No. 11, Butang Middle Road, industrial base, Xiamen Torch High tech Zone (Tongxiang), Xiamen, Fujian Patentee before: Xiamen Haichen New Energy Technology Co.,Ltd. |
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