CN214542372U - Battery core cover plate and battery core - Google Patents
Battery core cover plate and battery core Download PDFInfo
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- CN214542372U CN214542372U CN202120665647.1U CN202120665647U CN214542372U CN 214542372 U CN214542372 U CN 214542372U CN 202120665647 U CN202120665647 U CN 202120665647U CN 214542372 U CN214542372 U CN 214542372U
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- cover plate
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- connecting piece
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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 relates to an electric core cover plate and an electric core, wherein, the electric core cover plate comprises a cover plate body, the other side of the cover plate body is provided with two connecting pieces which are respectively and fixedly connected with a positive pole column and a negative pole column, and the two connecting pieces are respectively provided with a positive connecting piece and a negative connecting piece; the positive connecting sheet and the negative connecting sheet respectively comprise a main body part and lug connecting parts which are respectively positioned at two opposite sides of the main body part, and the lug connecting parts at two sides are positioned outside the cover plate body and can be turned over to one side of the cover plate body; each connecting piece all includes the bottom plate that links firmly with positive post or negative pole post to and the tight arm of clamp that sets up respectively in the double-phase offside of bottom plate, and because of the one side laminating on the bottom plate of main part, and the tight arm of clamp of both sides compresses tightly in the opposite side of main part, and constitutes the tight fixedly of clamp of positive pole connection piece and negative pole connection piece in corresponding connecting piece department. Electric core apron, can effectively prevent the welding explosion point from appearing to can effectively reduce the introduction of metallic foreign matter in the course of working.
Description
Technical Field
The utility model relates to a lithium cell spare part technical field, in particular to electric core cover plate, simultaneously, the utility model discloses still relate to an electric core with this electric core cover plate.
Background
At present, in the manufacture of a square aluminum-shell battery, a pole group lug and a connecting sheet are generally welded by ultrasonic wave, and then the whole connecting sheet and a cover plate are welded by laser. When the connecting sheet and the cover plate are welded by laser, welding slag generated splashes, welding explosion points are easily caused, and metal foreign bodies are introduced, so that the phenomena of short circuit, thermal runaway, self-discharge and the like of the finished battery are caused, and the safety risk of the battery is higher.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an electricity core apron, it need not to weld connection piece and apron body to can avoid having the welding explosion point, and the introduction of reducible metallic foreign matter.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides an electricity core apron, includes the apron body, and is located positive post and the negative pole post of apron body one side, just positive post with the negative pole post is close to respectively the both ends of apron body are arranged, its characterized in that: two connecting pieces fixedly connected with the positive pole column and the negative pole column respectively are arranged on the other side of the cover plate body, and a positive connecting piece electrically connected with the positive pole column and a negative connecting piece electrically connected with the negative pole column are arranged through the two connecting pieces respectively; wherein:
the positive connecting sheet and the negative connecting sheet respectively comprise a main body part and lug connecting parts which are respectively positioned at two opposite sides of the main body part, and the lug connecting parts at two sides are positioned outside the cover plate body and can be turned and folded to one side of the cover plate body;
each connecting piece all includes with the bottom plate that positive post or negative pole post links firmly, and in the double-phase offside of bottom plate sets up respectively presss from both sides tight arm, and because of one side of main part laminate in on the bottom plate, and both sides press from both sides tight arm compress tightly in the opposite side of main part, and constitute positive connection piece with negative pole connection piece is in the corresponding clamp of connecting piece department is fixed.
Furthermore, a crease for turning over the tab connecting part is arranged between the tab connecting part and the main body part.
Further, the crease is composed of a plurality of through holes which are arranged in a straight line and are arranged at intervals.
Further, the through hole is a long hole.
Furthermore, the tab connecting portion comprises a first connecting portion connected with the main body portion and a second connecting portion integrally and fixedly connected with one end of the first connecting portion.
Furthermore, positioning holes are formed in the positive connecting piece and/or the negative connecting piece, and positioning columns inserted into the positioning holes are arranged on the cover plate body.
Furthermore, the clamping arm comprises a first arm body fixedly connected with the bottom plate and a second arm body integrally and fixedly connected with the end part of the first arm body, the first arm body is abutted against the other side of the main body part, and the second arm body is abutted against the first arm body.
Compared with the prior art, the utility model discloses following advantage has:
electric core apron, through set up two connecting pieces that link to each other with anodal post and negative pole post respectively on the apron body to set up anodal connection piece and negative pole connection piece respectively through these two connection pieces, compare in current electric core apron welded connection piece's mode, can effectively prevent to appear welding explosion point, and can effectively reduce the introduction of metallic foreign matter in the course of working, thereby can improve the safety of finished product battery and decide, also can reduce simultaneously and produce line equipment, can reduce the maintenance cost.
In addition, through the crease that sets up in order to supply utmost point ear connecting portion upset, can be convenient for utmost point combination core. And the crease is formed by a plurality of through holes which are arranged in a linear way at intervals, so that the structure is simple, and the design and implementation are convenient. Through making utmost point ear connecting portion include the first connecting portion that link to each other with the main part to and an organic whole links firmly the second connecting portion in this first connecting portion one end, the core operation of combination of utmost point group can be convenient for.
Secondly, through being equipped with the locating hole on anodal connection piece and/or negative pole connection piece to set up the reference column on the apron body, can be convenient for realize the location of anodal connection piece and/or negative pole connection piece on the apron body. And the clamping arm comprises a first arm body fixedly connected with the bottom plate and a second arm body integrally and fixedly connected with the end part of the first arm body, so that the clamping arm is convenient to process and manufacture, and the setting firmness of the positive connecting sheet and the negative connecting sheet on the cover plate body can be improved.
Furthermore, another object of the present invention is to provide an electrical core, including the electrical core cover plate as described above, and pass through the positive connecting piece with the negative connecting piece is connected and is located a plurality of utmost points of electrical core cover plate bottom are organized, just utmost point organize for with both sides utmost point ear connecting portion link to each other respectively two sets ofly.
Furthermore, each group of the pole groups comprises two pole groups which are overlapped together, and the pole lugs on the two pole groups are arranged close to one side of each pole group.
Furthermore, fixing adhesive tapes are pasted between the two groups of pole groups and between the pole groups in each group.
Electric core, through adopting foretell electric core apron, can improve finished product battery's security, also can reduce simultaneously and produce line equipment, can reduce the maintenance cost.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural diagram of a cell cover plate according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a positive connection sheet according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a connecting member according to an embodiment of the present invention;
fig. 4 is a connection state diagram between the positive connection piece and the connection piece according to the embodiment of the present invention;
fig. 5 is a schematic structural view of a pre-welded pole group according to an embodiment of the present invention;
FIG. 6 is a left side view of FIG. 5;
fig. 7 is a schematic structural view of a pole assembly according to an embodiment of the present invention after core assembly;
FIG. 8 is a left side view of FIG. 7;
fig. 9 is a schematic structural view of a pole group after final welding according to an embodiment of the present invention;
FIG. 10 is a left side view of FIG. 9;
fig. 11 is a schematic structural view of the pole assembly after secondary core assembly according to the embodiment of the present invention;
fig. 12 is a left side view of fig. 11.
Description of reference numerals:
1. a cover plate body; 2. a negative electrode connecting sheet; 3. a positive electrode connecting sheet; 4. a connecting member; 5. a pole group; 6. a tab; 7. fixing the adhesive tape;
201. a main body portion; 2011. positioning holes; 202. a through hole; 203. a tab connecting part;
401. a base plate; 402. a first arm body; 403. a second arm body.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The present embodiment relates to a cell cover plate, as shown in fig. 1, which includes a cover plate body 1, and a positive pole and a negative pole, which are not shown in the figure, located on one side of the cover plate body 1. And as is well known to those skilled in the art, generally, the cover plate body 1 has rubber plastic provided at one side thereof, and the positive and negative posts are respectively disposed near both ends of the cover plate body 1, and the specific arrangement of the positive and negative posts may be as follows from the prior art.
In addition, two connecting pieces 4 fixedly connected with the positive pole column and the negative pole column respectively are arranged on the other side of the cover plate body 1, and a positive connecting piece 3 electrically connected with the positive pole column and a negative connecting piece 2 electrically connected with the negative pole column are arranged through the two connecting pieces 4 respectively. The electric core cover plate of this embodiment sets up anodal connection piece 3 and negative pole connection piece 2 respectively through two connecting pieces 4, compares in current electric core cover plate welded connection piece's mode, can avoid appearing the welding and explode the point to can effectively reduce the introduction of metallic foreign matter, thereby can improve finished product battery's security, also can reduce simultaneously and produce the line equipment, can reduce the maintenance cost.
As shown in fig. 1, the positive electrode connecting piece 3 and the negative electrode connecting piece 2 of the present embodiment are substantially symmetrical structures, and as described in conjunction with the structure of the negative electrode connecting piece 2 shown in fig. 2, each of the positive electrode connecting piece 3 and the negative electrode connecting piece 2 includes a main body portion 201, and tab connecting portions 203 respectively located on two opposite sides of the main body portion 201, and the tab connecting portions 203 on both sides are located outside the cover plate body 1 and can be folded to one side of the cover plate body 1. The body 201 is substantially rectangular, the tab connecting portion 203 is also rectangular, and the longitudinal direction of the tab connecting portion 203 is orthogonal to the longitudinal direction of the body 201. As also shown in fig. 2, the tab connecting portion 203 specifically includes a first connecting portion connected to the main body portion 201, and a second connecting portion integrally connected to one end of the first connecting portion.
In order to fold the tab connection portion 203 toward the cover plate body 1, a fold line is provided between the tab connection portion 203 and the body portion 201 to fold the tab connection portion 203. As shown in fig. 2, the fold of the present embodiment is specifically provided between the first connecting portion and the main body portion 201. And as a possible implementation manner, the fold of the present embodiment is composed of a plurality of through holes 202 arranged in a straight line and spaced apart from each other. In order to further facilitate the folding of the tab connecting portion 203, the through hole 202 is preferably formed as a long hole.
It should be noted that the specific shapes of the body portion 201 and the tab connecting portion 203 of the present embodiment may be adjusted according to design requirements. In addition, the through holes 202 may be rectangular holes or diamond holes, but the effect may be reduced.
Referring to fig. 2, in order to facilitate the arrangement of the positive connection piece 3 and the negative connection piece 2 on the cover plate body 1, positioning holes 2011 are formed in the positive connection piece 3 and the negative connection piece 2, and positioning columns inserted into the positioning holes 2011 are formed in rubber and plastic of the cover plate body 1. The positioning holes 2011 are respectively disposed on two sides of the connecting member 4, and as a possible implementation manner, the positioning holes 2011 distributed on each side of the connecting member 4 are two positioning holes arranged at intervals.
Of course, the arrangement and number of the positioning holes 2011 may be adjusted according to the specific situation, besides as shown in fig. 2. In addition, it should be noted that, in addition to the positioning holes 2011 provided on both the positive connection piece 3 and the negative connection piece 2 as shown in fig. 2, the positioning holes 2011 may be provided on only one of the two connection pieces, and obviously, the positioning difficulty of the other connection piece may be increased.
As shown in fig. 3 and fig. 4, each connecting member 4 includes a bottom plate 401 fixedly connected to the positive or negative electrode post, and clamping arms respectively disposed on two opposite sides of the bottom plate 401, and the positive or negative connecting sheet 3 or 2 is clamped and fixed to the corresponding connecting member 4 by attaching one side of the main body 201 to the bottom plate 401 and pressing the clamping arms on the other side to the main body 201. In addition, each connector 4 is made of the same material as the corresponding connector, for example, the connector 4 connected to the positive electrode connector 3 may be made of aluminum, and the connector 4 connected to the negative electrode connector 2 may be made of copper.
Specifically, the clamp arm includes a first arm 402 fixedly attached to the base plate 401, and a second arm 403 integrally attached to an end of the first arm 402, and as shown in fig. 4, the first arm 402 is configured to be pressed by an external force against the other side of the body portion 201, and the second arm 403 is configured to be pressed by an external force against the first arm 402. By constructing the clamping arm in this configuration, not only is it easy to manufacture, but also the fixing effect on the connecting piece is improved.
The electric core apron of this embodiment, through set up two connecting pieces 4 that link to each other with positive post and negative pole post respectively on apron body 1, and set up positive connection piece 3 and negative pole connection piece 2 respectively through these two connecting pieces 4, compare in current electric core apron welded connection piece's mode, can avoid appearing the welding and explode the point, and can effectively reduce the introduction of metallic foreign matter in the course of working, thereby can improve the security of finished product battery, the production line equipment also can be reduced simultaneously, can reduce the maintenance cost.
In addition, the embodiment also relates to a battery cell, which includes the battery cell cover plate as described above, and a plurality of pole groups 5 connected to the bottom of the battery cell cover plate through the positive connecting pieces 3 and the negative connecting pieces 2, and the pole groups 5 are two groups respectively connected to the tab connecting portions 203 on both sides. As a specific implementation manner, as shown in fig. 7 and 8, each group of the electrode groups 5 of the present embodiment includes two electrode groups 5 stacked together, and the tabs 6 on the two electrode groups 5 are both disposed close to one side of the electrode groups 5, so as to facilitate the core combination between the two electrode groups 5.
In addition, in order to improve the fixing effect, as shown in fig. 8, fixing tapes 7 are adhered between the two sets of pole groups 5 and between the pole groups 5 in each set, and the fixing tapes 7 are a plurality of strips arranged at intervals along the height direction of the battery cell. As shown in fig. 5 to fig. 12, when the battery core of this embodiment is manufactured, as shown in fig. 5 and fig. 6, one side of the tab 6 on each electrode group 5, which is close to the electrode group 5, is prewelded to the electrode group 5; as shown in fig. 7 and 8, the two tabs 6 are oppositely placed and combined, and then, as shown in fig. 9 and 10, the two sets of pole groups 5 are bent toward one side of the cover plate body 1 along the crease of each connecting piece, and after bending again, the combination between the two sets of pole groups 5 can be completed as shown in fig. 11 and 12.
The electric core of this embodiment, through adopting foretell electric core apron, can improve the security of finished product battery, also can reduce simultaneously and produce line equipment, can reduce the maintenance cost.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an electricity core apron, includes apron body (1), and is located the anodal post and the negative pole post of apron body (1) one side, just the anodal post with the negative pole post is close to respectively the both ends of apron body (1) are arranged, its characterized in that: two connecting pieces (4) fixedly connected with the positive pole column and the negative pole column respectively are arranged on the other side of the cover plate body (1), and a positive connecting piece (3) electrically connected with the positive pole column and a negative connecting piece (2) electrically connected with the negative pole column are arranged through the two connecting pieces (4) respectively; wherein:
the positive connecting piece (3) and the negative connecting piece (2) respectively comprise a main body part (201) and lug connecting parts (203) which are respectively positioned at two opposite sides of the main body part (201), and the lug connecting parts (203) at two sides are positioned outside the cover plate body (1) and can be turned over to one side of the cover plate body (1);
each connecting piece (4) comprises a bottom plate (401) fixedly connected with the positive pole or the negative pole, and clamping arms respectively arranged on two opposite sides of the bottom plate (401), and the positive connecting piece (3) and the negative connecting piece (2) are clamped and fixed at the corresponding connecting piece (4) due to the fact that one side of the main body part (201) is attached to the bottom plate (401) and the clamping arms on two sides are pressed on the other side of the main body part (201).
2. The cell cover plate of claim 1, wherein: a fold line for turning over the tab connection part (203) is provided between the tab connection part (203) and the main body part (201).
3. The cell cover plate of claim 2, wherein: the crease is formed by a plurality of through holes (202) which are arranged in a straight line and are arranged at intervals.
4. The cell cover plate of claim 3, wherein: the through hole (202) is a long hole.
5. The cell cover plate of claim 1, wherein: the tab connecting part (203) comprises a first connecting part connected with the main body part (201) and a second connecting part integrally and fixedly connected with one end of the first connecting part.
6. The cell cover plate of claim 1, wherein: the anode connecting piece (3) and/or the cathode connecting piece (2) are/is provided with a positioning hole (2011), and the cover plate body (1) is provided with a positioning column inserted into the positioning hole (2011).
7. The cell cover plate of any of claims 1 to 6, wherein: the clamping arm comprises a first arm body (402) fixedly connected with the base plate (401), and a second arm body (403) integrally and fixedly connected with the end part of the first arm body (402), the first arm body (402) is abutted to the other side of the main body part (201), and the second arm body (403) is abutted to the first arm body (402).
8. An electric core, its characterized in that: the battery cell cover plate comprises the battery cell cover plate of any one of claims 1 to 7, and a plurality of pole groups (5) which are connected to the bottom of the battery cell cover plate through the positive connecting plate (3) and the negative connecting plate (2), wherein the pole groups (5) are two groups which are respectively connected with the lug connecting parts (203) on two sides.
9. The cell of claim 8, wherein: each group of the pole group (5) comprises two pole groups (5) which are overlapped together, and the lugs (6) on the two pole groups (5) are arranged close to one side of the pole group (5).
10. The cell of claim 9, wherein: and fixing adhesive tapes (7) are stuck between the two groups of pole groups (5) and between the pole groups (5) in each group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120665647.1U CN214542372U (en) | 2021-03-31 | 2021-03-31 | Battery core cover plate and battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120665647.1U CN214542372U (en) | 2021-03-31 | 2021-03-31 | Battery core cover plate and battery core |
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| Publication Number | Publication Date |
|---|---|
| CN214542372U true CN214542372U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120665647.1U Active CN214542372U (en) | 2021-03-31 | 2021-03-31 | Battery core cover plate and battery core |
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| CN (1) | CN214542372U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156608A (en) * | 2021-12-03 | 2022-03-08 | 合肥国轩高科动力能源有限公司 | Multi-winding-core structure of lithium battery and assembling method thereof |
| CN114709570A (en) * | 2022-04-07 | 2022-07-05 | 上海兰钧新能源科技有限公司 | Battery cell connection method, battery production device and battery |
-
2021
- 2021-03-31 CN CN202120665647.1U patent/CN214542372U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156608A (en) * | 2021-12-03 | 2022-03-08 | 合肥国轩高科动力能源有限公司 | Multi-winding-core structure of lithium battery and assembling method thereof |
| CN114156608B (en) * | 2021-12-03 | 2024-03-12 | 合肥国轩高科动力能源有限公司 | Multi-winding core structure of lithium battery and assembly method thereof |
| CN114709570A (en) * | 2022-04-07 | 2022-07-05 | 上海兰钧新能源科技有限公司 | Battery cell connection method, battery production device and battery |
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