CN218039732U - Negative electrode base, battery and battery pack - Google Patents
Negative electrode base, battery and battery pack Download PDFInfo
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- CN218039732U CN218039732U CN202221919438.6U CN202221919438U CN218039732U CN 218039732 U CN218039732 U CN 218039732U CN 202221919438 U CN202221919438 U CN 202221919438U CN 218039732 U CN218039732 U CN 218039732U
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- current collecting
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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 application provides a negative pole base, battery and battery package. The negative base comprises a current collecting steel sheet, a current collecting aluminum sheet and a sealing ring, wherein the first surface of the current collecting steel sheet is used for being electrically connected with a battery cell of the battery; the current collecting aluminum sheet is connected with the second surface of the current collecting steel sheet, a connecting part is formed on one surface of the current collecting aluminum sheet, which is far away from the current collecting steel sheet, and the connecting part is used for connecting another battery during assembly; the sealing ring is used for wrapping the peripheries of the current collecting steel sheet and the current collecting aluminum sheet, and the outer wall of the sealing ring is connected with the shell of the battery. Because the two sides of the current-collecting steel sheet are respectively connected with the battery cell and the current-collecting aluminum sheet, the current in the battery cell is transmitted to the current-collecting aluminum sheet through the current-collecting steel sheet, the connecting part on the current-collecting aluminum sheet is made of aluminum material, the melting point is lower, the battery is welded with another battery through the connecting part, the tensile strength after welding is higher, and further the connection between the batteries is firmer.
Description
Technical Field
The utility model relates to a technical field of battery especially relates to a negative pole base, battery and battery package.
Background
Nowadays, a commonly used cylindrical steel shell battery is composed of a battery core, a positive electrode and a negative electrode, wherein the negative electrode is wound to form a shell, the shell is mainly composed of a steel material, and the battery is welded with another battery through a base part of the negative electrode, so that series-parallel connection between the batteries is realized, and a larger electric quantity requirement is met.
However, since the melting point of the steel material is high, the formed welding spot is small, and the tensile strength after welding is low, so that the connection firmness between the two batteries is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide one kind and be convenient for with other battery welding and the higher negative pole base of welding back tensile strength, battery and battery package.
The purpose of the utility model is realized through the following technical scheme:
a negative pole base comprises a current collecting steel sheet, a current collecting aluminum sheet and a sealing ring, wherein the first surface of the current collecting steel sheet is used for being electrically connected with a battery cell of a battery; the current collecting aluminum sheet is connected with the second surface of the current collecting steel sheet, a connecting part is formed on one surface of the current collecting aluminum sheet, which is far away from the current collecting steel sheet, and the connecting part is used for connecting another battery during assembly; the sealing ring is used for wrapping the peripheries of the current collecting steel sheet and the current collecting aluminum sheet, and the outer wall of the sealing ring is connected with the shell of the battery.
In one embodiment, a cladding part is formed at the periphery of the current collecting steel sheet, and the cladding part is cladded at the periphery of the current collecting aluminum sheet.
In one embodiment, the cladding is arranged around the periphery of the aluminum collecting sheet.
In one embodiment, the current collecting aluminum sheet is welded to the current collecting steel sheet; and/or the presence of a catalyst in the reaction mixture,
the sealing ring is provided with a first avoiding hole, and the first avoiding hole is used for avoiding connection between the current collecting steel sheet and the battery core.
In one embodiment, the current collecting steel sheet comprises a steel sheet body and a welding part, the steel sheet body is connected with the welding part, and the welding part is used for being connected with a negative electrode lug of the battery cell.
In one embodiment, the thickness of the weld is greater than the thickness of the steel sheet body.
A battery comprises an electric core, a shell, an anode footstock and a cathode base as in any one of the above embodiments, wherein the shell is formed with a containing cavity, the electric core is arranged in the containing cavity, an anode footstock cover is arranged at one end of the shell, a cathode base cover is arranged at the other end of the shell to seal the containing cavity, an anode ear of the electric core is electrically connected with the anode footstock, and a cathode ear of the electric core is electrically connected with the cathode base.
In one embodiment, the sealing ring further has a second avoiding hole for avoiding connection of the connecting portion with another battery.
In one embodiment, the bottom periphery of the shell of the battery is bent inwards to form bent parts, the bent parts are used for limiting the movement of the sealing ring, third avoiding holes are formed between the bent parts, and the third avoiding holes are communicated with the second avoiding holes; and/or the presence of a catalyst in the reaction mixture,
the shell is a steel shell.
A battery pack comprising at least two batteries as in any one of the above embodiments, wherein the connecting portion of the current collecting aluminum sheet of the negative base of one of the batteries is connected to the positive top base of the other battery.
Compared with the prior art, the utility model discloses at least, following advantage has:
because the sealing washer is with the periphery parcel of mass flow steel sheet and mass flow aluminum sheet to the outer wall of sealing washer and the inner wall connection of the casing of battery, so make mass flow steel sheet and mass flow aluminum sheet all with the insulating setting of casing, make simultaneously electric core and external isolated in the battery, ensured that the electrolyte in the battery can not leak, also prevent that water and air from advancing in the electric core. And the two sides of the current-collecting steel sheet are respectively connected with the battery cell and the current-collecting aluminum sheet, the current in the battery cell is transmitted to the current-collecting aluminum sheet through the current-collecting steel sheet, a connecting part is formed on the current-collecting aluminum sheet, and the battery is welded with another battery through the connecting part.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a cross-sectional view of a negative base in one embodiment;
fig. 2 is a cross-sectional view of a seal ring in the negative base shown in fig. 1;
fig. 3 is another cross-sectional view of the seal ring in the negative base shown in fig. 1;
fig. 4 is a schematic view of the current collecting tab in the negative base of fig. 1;
fig. 5 is another schematic view of the current collecting steel sheet in the negative base of fig. 1;
fig. 6 is a schematic structural diagram of a current collecting aluminum sheet in the negative base shown in fig. 1;
fig. 7 is another schematic diagram of the structure of the aluminum current collecting sheet in the negative base shown in fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different 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.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The application provides a negative pole base which comprises a current collecting steel sheet, a current collecting aluminum sheet and a sealing ring, wherein the first surface of the current collecting steel sheet is used for being electrically connected with a battery cell of a battery; the current collecting aluminum sheet is connected with the second surface of the current collecting steel sheet, a connecting part is formed on one surface of the current collecting aluminum sheet, which is far away from the current collecting steel sheet, and the connecting part is used for connecting another battery during assembly; the sealing ring is used for wrapping the peripheries of the current collecting steel sheet and the current collecting aluminum sheet, and the outer wall of the sealing ring is connected with the shell of the battery.
In order to better understand the technical scheme and the beneficial effects of the present application, the following detailed description is further provided in conjunction with specific embodiments:
referring to fig. 1 to 7, a negative electrode base 10 according to an embodiment of the present invention includes a current collecting steel sheet 100, a current collecting aluminum sheet 200, and a sealing ring 300, wherein a first surface of the current collecting steel sheet 100 is used for electrically connecting to a battery cell (not shown in the drawings); the current collecting aluminum sheet 200 is connected with the second surface of the current collecting steel sheet 100, a connecting part 210 is formed on one surface of the current collecting aluminum sheet 200, which is far away from the current collecting steel sheet 100, and the connecting part 210 is used for connecting another battery during assembly; the sealing ring 300 is used for wrapping the peripheries of the current collecting steel sheet 100 and the current collecting aluminum sheet 200, and the outer wall of the sealing ring 300 is connected with the shell 20 of the battery.
In the present embodiment, since both sides of the current collecting steel sheet 100 are respectively connected to the battery cell and the current collecting aluminum sheet 200, it can be understood that the current collecting steel sheet 100 and the current collecting aluminum sheet 200 both have a conductive function, and when a current is generated in the battery cell, the current is transmitted to the current collecting aluminum sheet 200 through the current collecting steel sheet 100. Since the current collecting aluminum sheet 200 has the connection part 210, the connection part 210 may be an aluminum column or an aluminum table, but in general, the connection part 210 is made of aluminum material, so that the connection part 210 has good conductivity, and the current passing through the current collecting aluminum sheet 200 can be transmitted from the connection part 210 to another battery, so that the connection part 210 can be used to realize the series connection and the parallel connection between the batteries. It can be understood that when a plurality of batteries are grouped in series and parallel, the batteries are more firmly connected by welding, that is, the connecting part 210 needs to be welded with another battery, because the connecting part 210 is made of aluminum, the melting point of the connecting part 210 is lower, welding is convenient, and the tensile strength after welding is higher, and the connection between the batteries is more firmly. Furthermore, the sealing ring 300 wraps the peripheries of the current collecting steel sheet 100 and the current collecting aluminum sheet 200 at the same time, specifically, when the current collecting steel sheet 100 is connected with the current collecting aluminum sheet 200, the sealing ring 300 is wrapped at the peripheries of the current collecting steel sheet 100 and the current collecting aluminum sheet 200, so that the current collecting steel sheet and the current collecting aluminum sheet are accommodated in the cavity formed by the sealing ring 300, and the outer wall of the sealing ring 300 is connected with the shell 20 of the battery, it can be understood that the outer wall of the sealing ring 300 is fixedly connected with the inner wall of the shell 20. So, through sealing washer 300's setting makes electric core in the battery isolated with external, has avoided air and moisture to get into electric core, has also prevented simultaneously that the electrolyte in the battery from appearing leaking.
In one embodiment, referring to fig. 1 and 5, a cladding 110 is formed at the periphery of the current collecting steel sheet 100, and the cladding 110 is clad at the periphery of the current collecting aluminum sheet 200. In this embodiment, the periphery of the current collecting aluminum sheet 200 is wrapped by the wrapping portion 110, so that the current collecting aluminum sheet 200 is located in the cavity formed by the current collecting steel sheet 100, and the wrapping portion 110 limits the movement of the current collecting aluminum sheet 200, so that the connection between the current collecting steel sheet 100 and the current collecting aluminum sheet 200 is relatively firm.
Further, the cladding 110 is disposed around the circumference of the aluminum collector sheet 200. Therefore, the coating part 110 completely coats the periphery of the collecting aluminum sheet 200, the limiting effect of the coating part 110 on the collecting aluminum sheet 200 is further enhanced, and the connection between the collecting aluminum sheet 200 and the collecting steel sheet 100 is firmer.
In one embodiment, the collector aluminum sheet is welded to the collector steel sheet. In this embodiment, the mass flow aluminum sheet and the mass flow steel sheet are welded, so that the mass flow steel sheet and the mass flow aluminum sheet are firmly connected, and it can be understood that the mass flow aluminum sheet may be spot-welded to the mass flow steel sheet, and the mass flow aluminum sheet may also be laser-welded to the mass flow steel sheet.
In one embodiment, referring to fig. 1 and fig. 2, the sealing ring 300 has a first avoiding hole 310, and the first avoiding hole 310 is used for avoiding connection between the current collecting steel sheet 100 and the battery cell (not shown). In this embodiment, when the sealing ring 300 wraps the periphery of the current collecting steel sheet 100, the sealing ring 300 further has the first avoiding hole 310, and the battery cell may pass through the first avoiding hole 310 and be connected to the current collecting steel sheet 100, so as to realize conduction of current from the battery cell to the current collecting steel sheet 100.
In one embodiment, referring to fig. 1 and 4, the current collecting steel sheet 100 includes a steel sheet body 100a and a welding portion 100b, the steel sheet body 100a is connected to the welding portion 100b, and the welding portion 100b is used for being connected to a negative electrode tab (not shown) of the battery cell. Further, the thickness of the welded part 100b is greater than that of the steel sheet body 100 a. In the present embodiment, the current collecting steel sheet 100 includes a steel sheet body 100a and a welding portion 100b connected to each other, the welding portion 100b is connected to the negative tab of the battery cell, and the steel sheet body 100a is connected to the current collecting aluminum sheet 200. Thus, the current is transmitted to the current collecting steel sheet 100 through the welding portion 100b and then transmitted to the current collecting aluminum sheet 200 from the steel sheet body 100 a. Furthermore, since the thickness of the welding portion 100b is greater than that of the steel sheet body 100a, the welding portion 100b has greater welding strength when being welded to the negative electrode tab of the battery cell, and the welding portion 100b is favorably and firmly connected to the negative electrode tab of the battery cell.
The application provides a battery again, including electric core, casing, anodal footstock and as above-mentioned arbitrary embodiment the negative pole base, the casing is formed with and holds the chamber, electric core is located hold the intracavity, anodal footstock lid is located the one end of casing, negative pole base lid is located the other end of casing is in order to seal hold the chamber, the anodal ear of electric core with anodal footstock electricity is connected, the negative pole ear of electric core with negative pole base electricity is connected.
In one embodiment, referring to fig. 3, the sealing ring 300 further has a second avoiding hole 320, and the second avoiding hole 320 is used for avoiding the connection between the connecting portion 210 and another battery. When the current is transmitted from the current collecting steel sheet 100 to the current collecting aluminum sheet 200, the sealing ring 300 is further provided with the second avoiding hole 320, and the second avoiding hole 320 makes room for the connection between the connecting part 210 and another battery, so that the batteries are connected in series and in parallel.
Still further, referring to fig. 1, a bent portion 30 is formed by bending inward at the bottom periphery of the battery case 20, the bent portion 30 is used for limiting the movement of the sealing ring 300, a third avoiding hole 40 is formed between the bent portions 30, and the third avoiding hole 40 is communicated with the second avoiding hole 320. In this embodiment, the bending portion 30 is provided to limit the movement of the sealing ring 300, so as to enhance the sealing effect of the sealing ring 300, and meanwhile, since the third avoiding hole 40 is further formed at the bottom of the housing 20, the third avoiding hole 40 is communicated with the second avoiding hole 320, so that the connecting portion 210 is conveniently connected to other batteries.
In one embodiment, the housing is a steel shell. In this embodiment, the housing is constructed of a steel material.
The application also provides a battery pack which comprises at least two batteries as in any one of the above embodiments, wherein the connecting part of the current collecting aluminum sheet of the negative base of one battery is connected with the positive top base of the other battery.
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. An anode base, comprising:
the first surface of the current collecting steel sheet is electrically connected with a battery core of the battery;
the current collecting aluminum sheet is connected with the second surface of the current collecting steel sheet, a connecting part is formed on one surface of the current collecting aluminum sheet, which is far away from the current collecting steel sheet, and the connecting part is used for connecting another battery during assembly;
and the sealing ring is used for wrapping the peripheries of the current collecting steel sheet and the current collecting aluminum sheet, and the outer wall of the sealing ring is connected with the shell of the battery.
2. The negative electrode base as claimed in claim 1, wherein a coating portion is formed at the periphery of the current collecting steel sheet, and the coating portion coats the periphery of the current collecting aluminum sheet.
3. The negative electrode base of claim 2, wherein the cladding is disposed around a circumference of the current collecting aluminum sheet.
4. The negative electrode base of claim 1, wherein the current collecting aluminum sheet is welded to the current collecting steel sheet; and/or the presence of a catalyst in the reaction mixture,
the sealing ring is provided with a first avoiding hole, and the first avoiding hole is used for avoiding connection between the current collecting steel sheet and the battery core.
5. The negative pole base of claim 1, wherein the current collecting steel sheet comprises a steel sheet body and a welding part, the steel sheet body is connected with the welding part, and the welding part is used for being connected with the negative pole ear of the battery cell.
6. The negative electrode holder according to claim 5, wherein the welded portion has a thickness greater than that of the steel sheet body.
7. A battery, characterized in that, includes electric core, casing, anodal footstock and the negative pole base of any of claims 1 to 6, the casing is formed with and holds the chamber, electric core locates hold the intracavity, anodal footstock lid is located the one end of casing, negative pole base lid is located the other end of casing, in order to seal hold the chamber, the anodal ear of electric core with anodal footstock electricity is connected, the negative pole ear of electric core with negative pole base electricity is connected.
8. The battery of claim 7, wherein the sealing ring further has a second clearance hole for avoiding connection of the connecting portion to another battery.
9. The battery of claim 8, wherein a bottom periphery of the case of the battery is bent inward to form a bent portion, the bent portion is used for limiting the movement of the sealing ring, a third avoiding hole is formed between the bent portions, and the third avoiding hole is communicated with the second avoiding hole; and/or the presence of a catalyst in the reaction mixture,
the shell is a steel shell.
10. A battery pack comprising at least two batteries according to any one of claims 7 to 9, wherein the connecting portion of the current collecting aluminum tab of the negative base of one of said batteries is connected to the positive top base of the other one of said batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221919438.6U CN218039732U (en) | 2022-07-21 | 2022-07-21 | Negative electrode base, battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221919438.6U CN218039732U (en) | 2022-07-21 | 2022-07-21 | Negative electrode base, battery and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218039732U true CN218039732U (en) | 2022-12-13 |
Family
ID=84387446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221919438.6U Active CN218039732U (en) | 2022-07-21 | 2022-07-21 | Negative electrode base, battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218039732U (en) |
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2022
- 2022-07-21 CN CN202221919438.6U patent/CN218039732U/en active Active
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