CN213340654U - Connection piece structure and power battery - Google Patents
Connection piece structure and power battery Download PDFInfo
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- CN213340654U CN213340654U CN202022138598.4U CN202022138598U CN213340654U CN 213340654 U CN213340654 U CN 213340654U CN 202022138598 U CN202022138598 U CN 202022138598U CN 213340654 U CN213340654 U CN 213340654U
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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
Abstract
A connecting sheet structure and a power battery are provided, wherein the connecting sheet structure comprises a pole connecting plate and a pole lug connecting plate; the pole connecting plate is connected with the side edge of the pole lug connecting plate in a bending way through a first bending section; the tab connecting plate comprises a first tab connecting section and at least one second tab connecting section, and the first tab connecting section is connected with the second tab connecting section in a bending mode through a second bending section. The side of utmost point post connecting plate through first section of bending and utmost point ear connecting plate can be buckled and be connected, utmost point ear connecting plate includes first utmost point ear linkage segment and at least one second utmost point ear linkage segment, first utmost point ear linkage segment is connected with the second utmost point ear linkage segment can be buckled through the second section of bending, according to the battery internal conditions, can select the quantity of second utmost point ear linkage segment in a flexible way, and the angle of buckling of adjustment that also can be nimble, can avoid using longer flexible connection piece through setting up the section of buckling, the live length of utmost point ear has effectively been reduced, and then improve battery inner space utilization, thereby improve the energy density of battery.
Description
Technical Field
The utility model belongs to the power battery field, more specifically relates to a connection piece structure and power battery.
Background
At present, the lithium ion power battery is widely applied to the fields of computers, mobile phones and the like due to the advantages of high energy density, high power density, multiple recycling times, long storage time and the like, has a wide application prospect in electric vehicles such as electric bicycles, electric automobiles and the like and energy storage facilities along with the maturity of manufacturing technology, and can effectively solve global problems such as environmental pollution, energy crisis and the like due to the wide application of the power battery.
In the prior art, after the lug and the flexible connecting sheet are welded, the flexible connecting sheet is welded with the connecting sheet on the cover plate, and the flexible connecting sheet and the lug are both arranged inside the shell, so that certain requirements are required for the length of the flexible connecting sheet and the lug when the flexible connecting sheet and the cover plate are welded, and the flexible connecting sheet and the lug are required to be stored in a certain space inside the battery, so that the problem of low utilization rate of the internal space of the power battery is solved.
Therefore, it is desirable to develop a connection plate structure capable of effectively solving the problem of low utilization rate of the internal space of the power battery due to the adoption of a soft connection plate and the long used tab in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery connection piece structure to adopt the soft connection piece and the utmost point ear of use longer and lead to the problem that power battery internal space utilization is low among the solution prior art.
In order to achieve the purpose, the utility model provides a connecting sheet structure, which comprises a pole connecting plate and a pole lug connecting plate;
the pole connecting plate is connected with the side edge of the pole lug connecting plate in a bending way through a first bending section;
the tab connecting plate comprises a first tab connecting section and at least one second tab connecting section, and the first tab connecting section is connected with the second tab connecting section in a bending mode through a second bending section.
Optionally, the pole connecting plate has a bending angle range of 0 to 180 degrees formed between the first bending section and the side edge of the pole connecting plate.
Optionally, the first tab connection section forms a bending angle range of 0 ° to 180 ° with at least one second tab connection section through the second bending section.
Optionally, the surfaces of the first bending section and the second bending section are provided with embossing structures.
Optionally, first utmost point ear linkage segment is the rectangle, utmost point post connecting plate passes through first bending section with the first side of first utmost point ear linkage segment can be buckled and is connected.
Optionally, two second tab connecting sections are provided, the two second tab connecting sections are respectively connected to the first side edge and the second side edge of the first tab connecting section, and the second side edge is opposite to the first side edge; wherein the content of the first and second substances,
connect in first utmost point ear linkage segment first side the second utmost point ear linkage segment with be equipped with the clearance between the utmost point post connecting plate.
Optionally, the first side edge of the first tab connection section is provided with an arc-shaped groove, and the arc-shaped groove is connected with the gap.
Optionally, the pole connecting plate is rectangular, the pole connecting plate includes the first pole lug connecting section and the second pole lug connecting section, and the first pole lug connecting section is substantially rectangular; the pole connecting plate is connected with the first side edge of the pole lug connecting plate in a bendable mode through a first bending section, the second pole lug connecting section is connected with the second side edge of the first pole lug connecting section, and the second side edge is opposite to the first side plate.
Optionally, the connecting sheet structure is made of aluminum or copper.
A power battery comprises the connecting sheet structure.
The beneficial effects of the utility model reside in that:
the side of utmost point post connecting plate through first section of bending and utmost point ear connecting plate can be buckled and be connected, utmost point ear connecting plate includes first utmost point ear linkage segment and at least one second utmost point ear linkage segment, first utmost point ear linkage segment is connected with the second utmost point ear linkage segment can be buckled through the second section of bending, according to the battery internal conditions, can select the quantity of second utmost point ear linkage segment in a flexible way, and the angle of buckling of adjustment that also can be nimble, can avoid using longer flexible connection piece through setting up the section of buckling, the live length of utmost point ear has effectively been reduced, and then improve battery inner space utilization, thereby improve the energy density of battery.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a schematic structural diagram of a connection sheet structure according to a first embodiment of the present invention.
Fig. 2 shows a schematic structural diagram of a bent connecting sheet structure according to a first embodiment of the present invention.
Fig. 3 shows a schematic structural diagram of a connecting sheet structure according to a second embodiment of the present invention.
Fig. 4 shows a schematic structural view of a bent connecting sheet structure according to a second embodiment of the present invention.
Description of the reference numerals
1. A pole connecting plate; 2. a first bending section; 3. a first tab connection section; 4. a second bending section; 5. a second tab connection section; 6. a gap; 7. an arc-shaped groove; 8. and (3) embossing structure.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
According to the utility model, the connecting sheet structure comprises a pole connecting plate and a pole lug connecting plate;
the pole connecting plate is connected with the side edge of the pole lug connecting plate in a bending way through a first bending section;
the tab connecting plate comprises a first tab connecting section and at least one second tab connecting section, and the first tab connecting section is connected with the second tab connecting section in a bending mode through a second bending section.
Specifically, the utmost point post connecting plate can be connected through the first section of bending and the side of utmost point post connecting plate, utmost point post connecting plate includes first utmost point ear linkage segment and at least one second utmost point ear linkage segment, first utmost point ear linkage segment can be connected through the second section of bending and the connection of bending of second utmost point ear linkage segment, according to the battery internal conditions, can select the quantity of second utmost point ear linkage segment in a flexible way, and the angle of buckling of adjustment that also can be nimble, can avoid using longer flexible connection piece through setting up the section of buckling, effectively reduced the live length of utmost point ear, and then improve battery inner space utilization, thereby improve the energy density of battery.
In one example, the bending angle range formed between the first bending section and the side edge of the tab connecting plate of the pole connecting plate is 0-180 degrees.
Specifically, the utmost point post connecting plate is 0 ~ 180 through the angle of bending scope that forms between the first section of bending and the side of utmost point ear connecting plate, and in practical application, preferred angle of bending is 180, and this kind of mode of buckling from the side of utmost point ear connecting plate makes better and utmost point post looks welding of utmost point post connecting plate to more save the inside space of battery.
In one example, the first tab connection section forms a bending angle range of 0 to 180 degrees with at least one second tab connection section through the second bending section.
Specifically, the first tab connection section is bent through the second bending section and is bent within a range of 0-180 degrees with at least one second tab connection section, in practical application, the preferred bending angle is 90 degrees, the bending angle can be better welded with the tab, and a bare chip and a connecting sheet can be conveniently placed into the battery shell, so that the space utilization rate inside the battery is greatly improved.
In one example, the surfaces of the first and second bending sections are provided with embossing structures.
Specifically, the structural strength of bending section can effectively be improved in the design of knurling structure, has effectively prolonged connection piece structure's life.
In one example, the first tab connecting section is rectangular, the pole connecting plate is rectangular, and the pole connecting plate is connected with the first side edge of the first tab connecting section through the first bending section in a bending manner.
Specifically, the rectangular design of the first tab connecting section and the pole connecting plate enables the first tab connecting section and the pole connecting plate to be respectively increased in welding area with the pole and the tab, and the welding contact area is increased, so that the reliability of electric connection is improved.
In one example, the number of the second tab connecting sections is two, the two second tab connecting sections are respectively connected to a first side edge and a second side edge of the first tab connecting section, and the second side edge is opposite to the first side edge; wherein the content of the first and second substances,
a gap is arranged between the second pole lug connecting section connected to the first side edge of the first pole lug connecting section and the pole connecting plate.
Specifically, in practical application, the second utmost point ear linkage segment is preferred two, and two second utmost point ear linkage segments are connected respectively in the first side and the second side of first utmost point ear linkage segment, and the second side is relative with first side, and is connected and is equipped with the clearance between the second utmost point ear linkage segment of the first side of first utmost point ear linkage segment and the utmost point post connecting plate, and the first utmost point ear linkage segment and the contact of utmost point post connecting plate of homonymy can be avoided in this kind of structural design to short circuit phenomenon appears, and then influences power battery's security and reliability.
In one example, the first side edge of the first tab connection section is provided with an arc-shaped groove, and the arc-shaped groove is connected with the gap.
In one example, the pole connection plate is rectangular, the pole connection plate comprises a first pole lug connection section and a second pole lug connection section, and the first pole lug connection section is substantially rectangular; the pole connecting plate is connected with a first side edge of the pole lug connecting plate in a bendable mode through a first bending section, a second pole lug connecting section is connected with a second side edge of the first pole lug connecting section, and the second side edge is opposite to the first side plate.
In particular, in some embodiments, two second tab connection sections are not required, and therefore, one second tab connection section is selected according to actual conditions, so that the internal space of the battery occupied by the connection sheet structure can be saved, and the material cost is also greatly saved.
In one example, the connecting tab structure is aluminum or copper.
Specifically, in practical applications, the connecting sheet structure connected to the positive electrode is made of aluminum, and the connecting sheet structure connected to the negative electrode is made of copper.
According to the utility model discloses a power battery, include connection piece structure.
Example one
The connecting sheet structure when not bent is shown in figure 1, the utility model provides a connecting sheet structure, which comprises a pole connecting plate 1 and a pole lug connecting plate; the pole connecting plate is connected with the side edge of the pole lug connecting plate in a bendable manner through the first bending section 2; the tab connecting plate comprises a first tab connecting section 3 and at least one second tab connecting section 5, and the first tab connecting section 3 is connected with the second tab connecting section 5 in a bendable manner through a second bending section 4.
Specifically, in this embodiment, there are two second tab connection sections 5, the two second tab connection sections 5 are respectively connected to the first side edge and the second side edge of the first tab connection section 3, and the second side edge is opposite to the first side edge; wherein, a gap 6 is arranged between the second pole lug connecting section 5 connected to the first side edge of the first pole lug connecting section 3 and the pole connecting plate 1. The first side edge of the first tab connecting section 3 is provided with an arc-shaped groove 7, and the arc-shaped groove 7 is connected with the gap 6. The surfaces of the first bending section 2 and the second bending section 4 are provided with embossing structures 8.
The connecting sheet structure during bending is shown in fig. 2, the bending angle formed between the pole connecting plate 1 and the side edge of the pole connecting plate through the first bending section 2 is 180 degrees, and the bending angle formed between the first pole lug connecting section 3 and the two second pole lug connecting sections 5 through the second bending section 4 is 90 degrees.
The welding process of the connecting piece structure of the embodiment is as follows:
s1, ultrasonically welding the first lug connecting section 3 and/or the second lug connecting section 5 with a lug;
s2, bending the second tab connecting section 5 and the first tab connecting section 3 into 90 degrees through the second bending section 4, and bending into other angles, wherein the bending angle is flexibly selected according to actual conditions;
s3, placing the bare cell and the tab connecting plate into a shell together, and ensuring that the tab connecting plate 1 is outside the shell;
s4, welding the pole connecting plate 1 and the pole;
s5, bending the pole connecting plate 1 into 180 degrees through the first bending section 2 and the pole lug connecting plate, and also bending the pole connecting plate into other angles, wherein the bending angle is flexibly selected according to actual conditions;
and S6, welding the shell and the cover plate.
Example two
The connecting sheet structure when not bent is shown in figure 3, the utility model provides a connecting sheet structure, which comprises a pole connecting plate 1 and a pole lug connecting plate; the pole connecting plate 1 is connected with the side edge of the pole lug connecting plate in a bending way through the first bending section 2; the tab connection plate comprises a first tab connection section 3 and a second tab connection section 5, the first tab connection section 3 being substantially rectangular; the pole connecting plate 1 is connected with a first side edge of the pole lug connecting plate in a bendable mode through the first bending section 2, the second pole lug connecting section 5 is connected with a second side edge of the first pole lug connecting section 3, and the second side edge is opposite to the first side plate. The surfaces of the first bending section 2 and the second bending section 4 are provided with embossing structures 8.
The connecting sheet structure during bending is shown in fig. 4, the bending angle formed between the pole connecting plate 1 and the side edge of the pole connecting plate through the first bending section 2 is 180 degrees, and the bending angle formed between the first pole lug connecting section 3 and the second pole lug connecting section 5 through the second bending section 4 is 90 degrees.
The utility model also provides a power battery, include connection piece structure.
Specifically, through using the utility model discloses a connection piece structure can effectively reduce the use length of utmost point ear to avoid using longer flexible connection piece, and then improve battery inner space utilization, thereby improve power battery's energy density.
To sum up, the side of utmost point post connecting plate through first section of bending and utmost point ear connecting plate can be buckled and be connected, utmost point ear connecting plate includes first utmost point ear linkage segment and at least one second utmost point ear linkage segment, first utmost point ear linkage segment is connected through the second section of bending and the connection of can buckling of second utmost point ear linkage segment, according to the battery internal conditions, can select the quantity of second utmost point ear linkage segment in a flexible way, and the angle of buckling of adjustment that also can be nimble, can avoid using longer flexible connection piece through setting up the section of buckling, effectively reduced the live length of utmost point ear, and then improve battery inner space utilization, thereby improve the energy density of battery.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A connecting sheet structure is characterized by comprising a pole connecting plate and a pole lug connecting plate;
the pole connecting plate is connected with the side edge of the pole lug connecting plate in a bending way through a first bending section;
the tab connecting plate comprises a first tab connecting section and at least one second tab connecting section, and the first tab connecting section is connected with the second tab connecting section in a bending mode through a second bending section.
2. The tab construction of claim 1 wherein the pole connection plate has a bend angle in the range of 0 ° to 180 ° formed between the first bend section and the side edge of the pole connection plate.
3. The tab construction of claim 1 wherein the first tab connection section forms a bend angle with at least one of the second tab connection sections through the second bend section ranging from 0 ° to 180 °.
4. The web structure of claim 1, wherein the surfaces of the first and second bent sections are provided with embossing structures.
5. The tab construction of claim 1 wherein the first tab connection segment is rectangular and the post connection plate is rectangular, the post connection plate being connected to the first side of the first tab connection segment by the first bending segment.
6. The tab construction of claim 5 wherein there are two of the second tab connection sections, two of the second tab connection sections being connected to the first and second sides of the first tab connection section, respectively, the second side being opposite the first side; wherein the content of the first and second substances,
connect in first utmost point ear linkage segment first side the second utmost point ear linkage segment with be equipped with the clearance between the utmost point post connecting plate.
7. The tab construction of claim 6 wherein the first side edge of the first tab connection section is provided with an arcuate recess, the arcuate recess being connected to the gap.
8. The tab construction of claim 1 wherein the tab connection plate is rectangular, the tab connection plate including the first tab connection section and one of the second tab connection sections, the first tab connection section being substantially rectangular; the pole connecting plate is connected with the first side edge of the pole lug connecting plate in a bendable mode through a first bending section, the second pole lug connecting section is connected with the second side edge of the first pole lug connecting section, and the second side edge is opposite to the first side plate.
9. The connecting tab structure of claim 1 wherein the connecting tab structure is aluminum or copper.
10. A power cell comprising a tab structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022138598.4U CN213340654U (en) | 2020-09-25 | 2020-09-25 | Connection piece structure and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022138598.4U CN213340654U (en) | 2020-09-25 | 2020-09-25 | Connection piece structure and power battery |
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| Publication Number | Publication Date |
|---|---|
| CN213340654U true CN213340654U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022138598.4U Active CN213340654U (en) | 2020-09-25 | 2020-09-25 | Connection piece structure and power battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243227A (en) * | 2021-12-02 | 2022-03-25 | 湖北省泰璞电子有限公司 | Adjustable battery tab capable of being bent without damaging durability |
-
2020
- 2020-09-25 CN CN202022138598.4U patent/CN213340654U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243227A (en) * | 2021-12-02 | 2022-03-25 | 湖北省泰璞电子有限公司 | Adjustable battery tab capable of being bent without damaging durability |
| CN114243227B (en) * | 2021-12-02 | 2023-11-24 | 湖北省泰璞电子有限公司 | Adjustable battery tab capable of being bent and not damaging durability |
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