CN220895791U - Cylinder battery assembly that converges - Google Patents
Cylinder battery assembly that converges Download PDFInfo
- Publication number
- CN220895791U CN220895791U CN202322511190.0U CN202322511190U CN220895791U CN 220895791 U CN220895791 U CN 220895791U CN 202322511190 U CN202322511190 U CN 202322511190U CN 220895791 U CN220895791 U CN 220895791U
- Authority
- CN
- China
- Prior art keywords
- cover plate
- welding
- sealing
- groove
- disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 238000003466 welding Methods 0.000 claims abstract description 34
- 238000004804 winding Methods 0.000 claims abstract description 18
- 230000035515 penetration Effects 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 13
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a cylindrical battery confluence component, comprising: the positive electrode confluence disc is electrically connected with a winding core arranged in the shell, a pole column is manufactured on the positive electrode confluence disc, the pole column is of a hollow structure, and an annular flange extending inwards is manufactured at the top opening of the pole column and used for welding sealing nails; the negative electrode confluence disc is electrically connected with the shell; cover plate connecting parts are arranged on the negative electrode confluence disc at intervals along the circumferential direction, and the cover plate connecting parts are concave structures facing to the direction away from the winding core; the upper end face of the cover plate is provided with an annular groove electrically connected with the cover plate connecting part of the negative electrode confluence disc, the edge of the cover plate is provided with a connecting clamping groove, the connecting clamping groove is buckled at the lower end of the shell, and the middle part of the cover plate is provided with a confluence disc connecting part. The flange is arranged at the upper end of the pole, and the sealing nail is welded on the flange at the top of the pole through penetration welding, so that the operation is convenient, the positioning precision is improved, and the welding quality is ensured.
Description
Technical Field
The utility model belongs to the field of cylindrical battery processing, and particularly relates to a cylindrical battery converging component.
Background
Cylindrical lithium batteries are the most common lithium ion battery type at present, and are also the earliest emerging lithium ion battery type. The cylindrical lithium battery has good durability and can be recycled for a long time. In addition, the cylindrical lithium battery also has higher energy density and can accommodate more energy. In addition, the cylindrical lithium battery also has good impact resistance. In the prior art, only the edge position of the negative end of the cylindrical battery is connected with the shell to transmit current, so that the resistance is larger and the conductivity is weaker; the sealing nail is directly welded inside the positive pole, the welding difficulty is high, the positioning accuracy is poor, and the welding yield is low.
Disclosure of utility model
In view of the above, the present utility model is directed to a cylindrical battery busbar assembly to solve the above-mentioned technical problems.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
a cylindrical battery bussing assembly comprising:
The positive electrode confluence disc is electrically connected with a winding core arranged in the shell, a pole column is manufactured on the positive electrode confluence disc, the pole column is of a hollow structure, and an annular flange extending inwards is manufactured at the top opening of the pole column and used for welding sealing nails;
The negative electrode confluence disc is electrically connected with the shell; cover plate connecting parts are arranged on the negative electrode confluence disc at intervals along the circumferential direction, and the cover plate connecting parts are concave structures facing to the direction away from the winding core;
The upper end face of the cover plate is provided with an annular groove electrically connected with a cover plate connecting part of the negative electrode confluence disc, the edge of the cover plate is provided with a connecting clamping groove, the connecting clamping groove is buckled at the lower end of the shell, the middle part of the cover plate is provided with a confluence disc connecting part, and the confluence disc connecting part is a protruding structure formed in the middle part of the annular groove and facing to the direction close to the winding core.
Further, the cover plate connecting portion is fan-shaped.
Further, a plurality of welding nicks are formed in the positive electrode bus plate at intervals along the circumferential direction, and the welding nicks are used for welding with the winding core.
Further, the welding groove is formed in the bottom end face of the sealing nail, and the upper end of the pole is clamped in the welding groove, so that penetration welding is facilitated.
Further, a sealing structure is fixedly arranged on the positive electrode confluence disc, a sealing groove is formed in the periphery of the sealing structure, a sealing ring is arranged in the sealing groove, a fixing groove is formed in the periphery of the sealing ring, and the fixing groove is clamped at the end part of the shell.
Furthermore, the liquid injection cavity is formed in the middle of the sealing structure, and the pole penetrates through the bottom of the liquid injection cavity and is arranged in the liquid injection cavity.
Further, an installation groove is formed in the top of the sealing structure, and the diameter of the installation groove is larger than that of the liquid injection cavity;
the sealing nails are buckled in the mounting grooves.
Compared with the prior art, the cylindrical battery confluence assembly has the following beneficial effects:
(1) According to the cylindrical battery confluence assembly, the flange is arranged at the upper end of the pole, and the sealing nails are welded on the flange at the top of the pole through penetration welding, so that the operation is convenient, the positioning accuracy is improved, and the welding quality is ensured.
(2) According to the cylindrical battery confluence assembly, the downward concave cover plate connecting part is arranged on the negative electrode confluence disc, so that the connecting area between the cylindrical battery confluence assembly and the cover plate is increased, the conductivity of the negative electrode confluence disc is improved, and the energy loss is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a longitudinal cross-sectional view of the present utility model;
FIG. 4 is an enlarged view of a portion A of FIG. 3 in accordance with the present utility model;
FIG. 5 is an enlarged view of a portion B of FIG. 3 in accordance with the present utility model;
FIG. 6 is a schematic view of the structure of the positive electrode bus plate of the present utility model;
FIG. 7 is a schematic view of the structure of the negative electrode bussing plate of the present utility model;
FIG. 8 is a schematic view of the structure of the cover plate of the present utility model;
FIG. 9 is a schematic view of a seal ring according to the present utility model;
Fig. 10 is a schematic structural view of the sealing structure of the present utility model.
Reference numerals illustrate:
1-sealing nails; 2-a sealing structure; 3-a sealing ring; 4-a housing; 5-cover plate; 6-winding the core; 7-an anode confluence disc; 8-a negative electrode confluence disc; 21-a liquid injection cavity; 22-mounting slots; 31-a fixed groove; 51-connecting a clamping groove; 52-an annular groove; 53-a confluence plate connection; 71-pole; 72-an annular flange; 73-welding score; 81-cover plate connection.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides a cylindrical battery confluence assembly, which comprises a positive electrode confluence disc 7, a negative electrode confluence disc 8 and a cover plate 5, wherein the positive electrode confluence disc 7 is electrically connected with a winding core 6 arranged in a shell 4, a pole column 71 is arranged on the positive electrode confluence disc 7, the pole column 71 is of a hollow structure and is used for injecting electrolyte into a battery, and an annular flange 72 extending inwards is arranged at the top of the pole column 71 and is used for welding a sealing nail 1. Compared with the traditional welding mode, the welding difficulty is reduced by welding the sealing nail 1 on the top end of the pole 71, the welding precision is improved by positioning the annular flange 72, the welding quality of the sealing nail 1 is effectively improved, and the tightness of the battery is guaranteed. A plurality of welding nicks 73 are formed on the positive electrode confluence disc 7 at intervals along the circumferential direction, and the welding nicks 73 are used for welding with the winding core 6, so that the positive electrode confluence disc 7 and the winding core 6 are electrically connected.
The negative electrode confluence disc 8 is electrically connected with the shell 4; the negative electrode confluence disc 8 is provided with the cover plate connecting parts 81 at intervals along the circumferential direction, the cover plate connecting parts 81 are concave structures facing away from the direction of the winding core 6, the contact area between the negative electrode confluence disc 8 and the cover plate 5 is increased by adopting the concave structures, and compared with the traditional structure, the resistance is reduced, and the conductivity of the confluence structure is increased. Specifically, the cover connection portion 81 is fan-shaped. The shape of the cover plate connecting portion 81 in actual manufacturing is not limited to a sector shape, and the shape of the cover plate connecting portion 81 is adapted to the cover plate 5. A certain interval is arranged between the upper end surface of the negative electrode confluence disc 8 and the winding core 6, so that the short circuit caused by the contact between the negative electrode confluence disc 8 and the winding core 6 is prevented.
The upper end face of the cover plate 5 is provided with an annular groove 52 electrically connected with the cover plate connecting part 81 of the negative electrode confluence disc 8, the edge of the cover plate 5 is provided with a connecting clamping groove 51, the connecting clamping groove 51 is buckled at the lower end of the shell 4, the middle part of the cover plate 5 is provided with a confluence disc connecting part 53, and the confluence disc connecting part 53 is a protruding structure formed in the middle part of the annular groove 52 and facing to the direction close to the winding core 6.
The welding groove is formed in the bottom end face of the sealing nail 1, and the upper end of the pole 71 is clamped in the welding groove, so that penetration welding is facilitated.
The positive electrode confluence disc 7 is fixedly provided with a sealing structure 2, the periphery of the sealing structure 2 is provided with a sealing groove, a sealing ring 3 is arranged in the sealing groove, the periphery of the sealing ring 3 is provided with a fixing groove 31, and the fixing groove 31 is clamped at the end part of the shell 4. The sealing structure 2 is separated from the battery case 4, that is, the negative electrode by the provision of the seal ring 3, thereby preventing occurrence of a short circuit. The middle part of the sealing structure 2 is provided with a liquid injection cavity 21, and the pole 71 penetrates through the bottom of the liquid injection cavity 21 and is arranged in the liquid injection cavity 21. The top of the sealing structure 2 is provided with a mounting groove 22, and the diameter of the mounting groove 22 is larger than that of the liquid injection cavity 21; the sealing nail 1 is buckled in the mounting groove 22, so that the sealing nail 1 is fixed more firmly.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; and these modifications or
The substitution does not deviate the essence of the corresponding technical scheme from the scope of the technical scheme of each embodiment of the utility model, and the substitution is included in the scope of the claims and the specification of the utility model.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. A cylindrical battery bussing assembly, comprising:
The positive electrode confluence disc is electrically connected with a winding core arranged in the shell, a pole column is manufactured on the positive electrode confluence disc, the pole column is of a hollow structure, and an annular flange extending inwards is manufactured at the top opening of the pole column and used for welding sealing nails;
The negative electrode confluence disc is electrically connected with the shell; cover plate connecting parts are arranged on the negative electrode confluence disc at intervals along the circumferential direction, and the cover plate connecting parts are concave structures facing to the direction away from the winding core;
The upper end face of the cover plate is provided with an annular groove electrically connected with a cover plate connecting part of the negative electrode confluence disc, the edge of the cover plate is provided with a connecting clamping groove, the connecting clamping groove is buckled at the lower end of the shell, the middle part of the cover plate is provided with a confluence disc connecting part, and the confluence disc connecting part is a protruding structure formed in the middle part of the annular groove and facing to the direction close to the winding core.
2. The cylindrical battery buss assembly of claim 1, wherein the cover plate connection is fan-shaped in shape.
3. The cylindrical battery busbar assembly of claim 1, wherein the positive electrode busbar disc is provided with a plurality of welding nicks at intervals along the circumferential direction, and the welding nicks are used for welding with the winding core.
4. The cylindrical battery busbar assembly of claim 1, wherein a welding groove is formed in the bottom end surface of the sealing nail, and the upper end of the pole is clamped in the welding groove, so that penetration welding is facilitated.
5. The cylindrical battery confluence assembly according to claim 1, wherein a sealing structure is fixedly arranged on the positive electrode confluence disc, a sealing groove is formed in the periphery of the sealing structure, a sealing ring is arranged in the sealing groove, a fixing groove is formed in the periphery of the sealing ring, and the fixing groove is clamped at the end part of the shell.
6. The cylindrical battery confluence assembly according to claim 5, wherein the sealing structure is provided with a liquid injection cavity in the middle part, and the pole penetrates through the bottom of the liquid injection cavity and is arranged in the liquid injection cavity.
7. The cylindrical battery confluence assembly according to claim 6, wherein a mounting groove is formed in the top of the sealing structure, and the diameter of the mounting groove is larger than that of the liquid injection cavity;
the sealing nails are buckled in the mounting grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322511190.0U CN220895791U (en) | 2023-09-14 | 2023-09-14 | Cylinder battery assembly that converges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322511190.0U CN220895791U (en) | 2023-09-14 | 2023-09-14 | Cylinder battery assembly that converges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220895791U true CN220895791U (en) | 2024-05-03 |
Family
ID=90869918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322511190.0U Active CN220895791U (en) | 2023-09-14 | 2023-09-14 | Cylinder battery assembly that converges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220895791U (en) |
-
2023
- 2023-09-14 CN CN202322511190.0U patent/CN220895791U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |