CN212303847U - Battery connection piece, battery module, battery package and electric motor car - Google Patents
Battery connection piece, battery module, battery package and electric motor car Download PDFInfo
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- CN212303847U CN212303847U CN202020517721.0U CN202020517721U CN212303847U CN 212303847 U CN212303847 U CN 212303847U CN 202020517721 U CN202020517721 U CN 202020517721U CN 212303847 U CN212303847 U CN 212303847U
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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 provides a battery connecting sheet, which comprises a first connecting part, a second connecting part and a fusing part, wherein the first connecting part is used for connecting a pole of a battery; the second connecting part is positioned on the peripheral side of the battery and is used for electrically connecting the tabs of the pole core group in the battery, and the second connecting part and the first connecting part are arranged in an intersecting manner; the fusing part is arranged between the first connecting part and the second connecting part, and the thickness of at least part of the fusing part is smaller than that of at least one of the first connecting part and the second connecting part. The utility model also provides a battery module, battery package and electric motor car. The utility model provides a battery connection piece is through thinning the processing with fusing portion to fuse more easily when making the battery take place the electric current short circuit, and then can effectively protect the battery, and fusing portion is located the crossing department of buckling of first connecting portion and second connecting portion, realizes the heavy current fusing of battery more easily.
Description
Technical Field
The utility model relates to a battery field, concretely relates to battery connection piece, battery module, battery package and electric motor car.
Background
With the continuous popularization of new energy automobiles, the use requirement of power batteries in the new energy automobiles becomes higher and higher. Inside all can setting up heavy current fusing device of current power battery, when the battery takes place the short circuit, spare part can in time be fused, and the cutting off current avoids causing further destruction to the battery, and then causes more serious complete accident. In the prior art, the connecting piece is provided with the fusing hole or the fusing cavity, and the fusing hole and the fusing cavity occupy 35-50% of the volume of the connecting piece, so that the normal overcurrent capacity of the connecting piece is limited, and the strength of the part is influenced; in addition, the connecting sheet is arranged on the lower surface of the cover plate at the top of the power battery, and after the connecting sheet is fused, slag can fall into the pole core, so that the risk of further short circuit is caused.
SUMMERY OF THE UTILITY MODEL
The present disclosure is directed to solving at least one of the problems in the prior art. To this end, in a first aspect of the present application, there is provided a battery tab, comprising:
the first connecting part is used for connecting a pole of a battery;
the second connecting part is used for electrically connecting the tabs of the pole core group in the battery, and the second connecting part and the first connecting part are arranged in an intersecting manner;
and the fusing part is arranged between the first connecting part and the second connecting part, and the thickness of at least part of the fusing part is smaller than that of at least one of the first connecting part and the second connecting part.
In a preferred embodiment, a thickness of at least a portion of the fusing part is a first thickness, and a thickness of at least one of the first connecting part and the second connecting part is a second thickness, wherein 80% < the first thickness/the second thickness < 100%.
In a preferred embodiment, the fuse portion includes a bending portion and a thinned portion located on at least one side of the bending portion, and a thickness of the bending portion and/or the thinned portion is smaller than a thickness of at least one of the first connecting portion and the second connecting portion.
In a preferred embodiment, the thinning portion includes a first sub thinning portion and a second sub thinning portion, the first sub thinning portion is located between the first connecting portion and the bending portion, and the second sub thinning portion is located between the second connecting portion and the bending portion.
In a preferred embodiment, a reinforcing member is disposed on the bending portion.
In a preferred embodiment, the width of the reinforcing member is 30% to 50% of the width of the battery connecting tab.
In a preferred embodiment, a reinforcing member is disposed on the bending portion, and two ends of the reinforcing member are respectively connected to the first sub-thinning portion and the second sub-thinning portion.
In a second aspect of the present application, there is provided a battery module including a plurality of battery tabs as set forth in any one of the above.
In a third aspect of the present application, there is provided a battery pack including a plurality of the battery modules described in any one of the above.
In a fourth aspect of the present application, there is provided an electric vehicle including the battery pack described above.
The utility model has the advantages that: the utility model provides a battery connection piece is through thinning the processing with fusing portion to fuse more easily when making the battery take place the electric current short circuit, and then can effectively protect the battery, and fusing portion is located the crossing department of buckling of first connecting portion and second connecting portion, realizes the heavy current fusing of battery more easily.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of an angle structure of a battery connecting sheet according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a battery connecting sheet according to another angle provided by an embodiment of the present invention.
Fig. 3 is a schematic structural view of an angle between a cover plate and a battery connecting sheet according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of another angle of connection between a cover plate and a battery connecting sheet according to an embodiment of the present invention.
Fig. 5 is a schematic view of a partial structure of a battery connecting sheet mounted on a battery case according to an embodiment of the present invention.
Detailed Description
The following description is of the preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, a number of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations are also considered to be the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 and 2, an embodiment of the present invention provides a battery connecting sheet 100, where the battery connecting sheet 100 includes a first connecting portion 110, a second connecting portion 120, and a fusing portion 130.
Wherein the first connection portion 110 is used for connecting a pole 150 (shown in fig. 5) of the battery.
In this embodiment, the battery includes a housing including a cover plate 200 (shown in fig. 3 and 4) at an end of the battery, and a pole piece group inside the housing; the post 150 of the battery is disposed on the same side of the battery as the cover plate 200, and the post 150 passes through the cover plate 200 (as shown in fig. 5).
The second connection portion is used to electrically connect the tabs of the pole core set inside the battery, and the second connection portion 120 and the first connection portion 110 are arranged in an intersecting manner. In the present embodiment, the first connecting portion 110 and the second connecting portion 120 are disposed perpendicular to each other, and in other embodiments, the included angle between the first connecting portion 110 and the second connecting portion 120 may be greater than 90 ° or less than 90 °, as long as the intersecting bending of the two is satisfied. In this embodiment, the first connecting portion 110 and the second connecting portion 120 are respectively located on two adjacent and mutually perpendicular side surfaces of the battery, wherein the first connecting portion 110 is disposed on the same side as the cover plate 200, and the second connecting portion 120 is disposed perpendicular to the cover plate 200.
The fusing part 130 is disposed between the first and second connection parts 110 and 120, and a thickness of at least a portion of the fusing part 130 is smaller than a thickness of at least one of the first and second connection parts 110 and 120. That is, at least a portion of the fusing part 130 is thinned, so that the fusing part is more easily fused when the current of the battery is short-circuited, and the battery can be effectively protected. In this embodiment, at least a portion of the fusing part 130 has a thickness smaller than that of the first and second connection parts 110 and 120, in other embodiments, at least a portion of the fusing part 130 has a thickness smaller than that of the first connection part 110, and in other embodiments, at least a portion of the fusing part 130 has a thickness smaller than that of the second connection part 120. Because the first connection portion 110 and the second connection portion 120 are arranged in an intersecting manner, and the fusing portion 130 is located at the intersecting bending position between the first connection portion 110 and the second connection portion 120, the fusing portion 130 has bending deformation, so that the resistance of the fusing portion 130 is increased, when a current passes through the fusing portion, the local heat generation amount at the bending position is increased, and the fusing portion 130 has poor heat dissipation performance relative to the first connection portion 110 and the second connection portion 120, so that the high-current fusing of the battery can be realized.
In addition, since the fusing part 130 is disposed between the first connecting part 110 and the second connecting part 120, and the first connecting part 110 and the second connecting part 120 are disposed at both side surfaces of the battery, respectively, it can be seen that the fusing part 130 is located at the peripheral side of the battery (as shown in fig. 3 and 4); compared with the connecting sheet positioned on the lower surface of the cover plate, when the battery connecting sheet 100 in the utility model is fused at the bending position, the high-temperature fusing area can be thoroughly disconnected, and adhesion can not occur; because the fusing area is arranged on the side surface of the pole core or the battery, the slag cannot fall into the pole core to cause further damage to the battery.
The utility model provides a battery connection piece 100 is through making thin the processing with fusing portion 130 to fuse more easily when making the battery take place the electric current short circuit, and then can effectively protect the battery, and fusing portion 130 is located the crossing department of buckling of first connecting portion 110 and second connecting portion 120, realizes the heavy current fusing of battery more easily.
In a further embodiment, a thickness of at least a portion of the fusing part 130 is a first thickness, and a thickness of at least one of the first and second connecting parts 110 and 120 is a second thickness, 80% < the first thickness/the second thickness < 100%. Within this setting range, it is possible to ensure that the battery connection tab 100 is fused without affecting the strength of the battery connection tab 100, at least in part, by the fused portion 130. That is, if at least a part of the fusing part 130 is thinned too much, the battery connecting tab 100 is reduced in strength and easily broken, and thus cannot function as a connecting tab.
In a further embodiment, the fusing part 130 includes a bending part 131 and a thinned part 140 (shown in fig. 1 and 2) located at least one side of the bending part 131, and a thickness of the bending part 131 and/or the thinned part 140 is smaller than a thickness of at least one of the first connecting part 110 and the second connecting part 120. In the present embodiment, the thicknesses of the bending portion 131 and the thinned portions 140 located at both sides of the bending portion 131 are smaller than the thicknesses of the first connection portion 110 and the second connection portion 120. Specifically, the thicknesses of the bent portion 131 and the thinned portions 140 at both sides of the bent portion 131 are 80% of the thicknesses of the first connection portion 110 and the second connection portion 120, and in some embodiments, the thicknesses of the thinned portions 140 at both sides of the bent portion 131 are 90% of the thicknesses of the first connection portion 110 and the second connection portion 120. In other embodiments, the thickness of the thinned portions 140 on both sides of the bending portion 131 is smaller than the thickness of the first connection portion 110 and the second connection portion 120.
In a further embodiment, the thinning portion 140 includes a first sub thinning portion 141 and a second sub thinning portion 142, the first sub thinning portion 141 is located between the first connecting portion 110 and the bent portion 131, and the second sub thinning portion 142 is located between the second connecting portion 120 and the bent portion 131. That is, the thinned portions are provided at both sides of the bent portion 131. The thicknesses of the first sub-thinned portion 141 and the second sub-thinned portion 142 may be the same or different.
In a further embodiment, the bending radius of the bending part 131 is less than 1 mm. When the bending radius is smaller than 1mm, the resistance of the bending portion 131 is larger, which leads to further increase of the local heat generation amount, and further enables the battery to be rapidly fused when a large-current short circuit occurs.
In a further embodiment, a reinforcing member 132 is disposed on the bent portion 131. Since the bending portion 131 is thinned, the connection strength of the bending portion 131 is reduced, and in this embodiment, the strength of the bending portion 131 is increased by adding the reinforcing member 132. In addition, the reinforcing member 132 further increases the deformation degree of the bent portion 131, so that the local resistance thereof is further increased, and the local heat generation is further increased, so that the fusing portion 130 is more easily fused.
In a further embodiment, both ends of the reinforcing member 132 are connected to the first sub-thinned portion 141 and the second sub-thinned portion 142, respectively (as shown in fig. 2). Specifically, the bent portion 131 is provided with a recess 133 recessed toward the inside of the battery, and the reinforcing member 132 is disposed in the recess 133.
In a further embodiment, the width of the stiffener 132 is 30% -50% of the width of the battery tab 100. This arrangement can ensure the strength of the battery connecting sheet 100 at the bent portion and also increase the resistance within a certain range. Specifically, in some embodiments, the width of the stiffener 132 is 40% of the width of the cell connection tab 100, and in other embodiments, the width of the stiffener 132 is 45% of the width of the cell connection tab 100. Can be set according to actual conditions.
In a further embodiment, two reinforcing members 132 are symmetrically disposed on the bending portion 131. The symmetrical arrangement may further increase the strength. In some embodiments, the number of the reinforcing members 132 may be 1 or more than 3, and may be set according to actual conditions.
Referring to fig. 5, an embodiment of the present invention further provides a battery module (not shown), the battery module includes a plurality of batteries, the batteries include a housing and a pole core set inside the housing, the housing includes a cover plate 200 at an end of the battery, and the battery further includes a battery connecting sheet 100 according to any of the above embodiments.
In a further embodiment, the first connection portion 110 is opened with a first pole through hole 111 penetrating through two opposite surfaces, and the pole 150 of the battery is inserted into the first pole through hole 111 and connected to the first connection portion 110.
In a further embodiment, the cover plate 200 is formed with a second pole through hole 210, the second pole through hole 210 is communicated with the first pole through hole 111, and the pole 150 of the battery is inserted into the second pole through hole 210 and the first pole through hole 111; the battery further includes a sealing ring 300, and the sealing ring 300 is disposed between the battery connecting piece 100 and the cap plate 200 to seal a gap between the battery connecting piece 100 and the cap plate 200.
An embodiment of the utility model provides a battery package is still provided, including a plurality of foretell battery modules.
An embodiment of the utility model also provides an electric motor car, a serial communication port, including foretell battery package. The utility model provides an accessible battery connection piece 10 fuses fast when battery among the electric motor car takes place the electric current short circuit, improves the security performance of electric motor car.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A battery tab, comprising:
the first connecting part is used for connecting a pole of a battery;
the second connecting part is used for electrically connecting the tabs of the pole core group in the battery, and the second connecting part and the first connecting part are arranged in an intersecting manner;
and the fusing part is arranged between the first connecting part and the second connecting part, and the thickness of at least part of the fusing part is smaller than that of at least one of the first connecting part and the second connecting part.
2. The battery tab of claim 1 wherein at least a portion of the fuse portion has a first thickness and at least one of the first connection portion and the second connection portion has a second thickness, wherein 80% < first thickness/second thickness < 100%.
3. The battery tab of claim 1, wherein the fuse portion comprises a bent portion and a thinned portion on at least one side of the bent portion, the thickness of the bent portion and/or the thinned portion being less than the thickness of at least one of the first connection portion and the second connection portion.
4. The battery tab of claim 3 wherein the thinned portion comprises a first sub-thinned portion between the first connection portion and the bent portion and a second sub-thinned portion between the second connection portion and the bent portion.
5. A battery tab according to claim 3 wherein the bend is provided with a reinforcement.
6. The battery tab of claim 5 wherein the reinforcement has a width that is 30% to 50% of the width of the battery tab.
7. The battery tab of claim 4 wherein the bent portion is provided with a reinforcement member, and both ends of the reinforcement member are connected to the first sub-thinned portion and the second sub-thinned portion, respectively.
8. A battery module comprising a plurality of batteries, the batteries including a housing and a pole piece group inside the housing, the housing including a cap plate at an end of the battery, the battery further including a battery tab according to any one of claims 1 to 7.
9. A battery pack comprising a plurality of battery modules according to claim 8.
10. An electric vehicle comprising the battery pack according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020517721.0U CN212303847U (en) | 2020-04-09 | 2020-04-09 | Battery connection piece, battery module, battery package and electric motor car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020517721.0U CN212303847U (en) | 2020-04-09 | 2020-04-09 | Battery connection piece, battery module, battery package and electric motor car |
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| Publication Number | Publication Date |
|---|---|
| CN212303847U true CN212303847U (en) | 2021-01-05 |
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| CN202020517721.0U Active CN212303847U (en) | 2020-04-09 | 2020-04-09 | Battery connection piece, battery module, battery package and electric motor car |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122631A (en) * | 2021-11-27 | 2022-03-01 | 东莞市万连实业有限公司 | Preparation method of novel cell electrode switching sheet |
| US11894571B1 (en) | 2023-02-09 | 2024-02-06 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | Adapter assembly, energy storage device, and power consuming apparatus |
| WO2024164247A1 (en) * | 2023-02-09 | 2024-08-15 | 深圳海润新能源科技有限公司 | Adapter assembly, energy storage apparatus, and electrical device |
-
2020
- 2020-04-09 CN CN202020517721.0U patent/CN212303847U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122631A (en) * | 2021-11-27 | 2022-03-01 | 东莞市万连实业有限公司 | Preparation method of novel cell electrode switching sheet |
| CN114122631B (en) * | 2021-11-27 | 2024-01-26 | 东莞市万连实业有限公司 | Preparation method of cell electrode switching sheet |
| US11894571B1 (en) | 2023-02-09 | 2024-02-06 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | Adapter assembly, energy storage device, and power consuming apparatus |
| WO2024164247A1 (en) * | 2023-02-09 | 2024-08-15 | 深圳海润新能源科技有限公司 | Adapter assembly, energy storage apparatus, and electrical device |
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