CN218334033U - Cylindrical battery cover plate - Google Patents
Cylindrical battery cover plate Download PDFInfo
- Publication number
- CN218334033U CN218334033U CN202222527248.6U CN202222527248U CN218334033U CN 218334033 U CN218334033 U CN 218334033U CN 202222527248 U CN202222527248 U CN 202222527248U CN 218334033 U CN218334033 U CN 218334033U
- Authority
- CN
- China
- Prior art keywords
- battery
- cover plate
- current collecting
- pole
- battery cover
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Images
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 relates to a cylindrical battery cover plate, which comprises a battery cover plate substrate, a battery pole, a pole rivet and a current collecting plate, wherein one end of the pole rivet penetrates through the battery cover plate substrate, and the battery pole is fixedly arranged on one side of the battery cover plate substrate; the other end of the pole rivet is fixedly connected with one end of the conductive elastic piece on the other side of the base plate of the tank cover plate; the other end of the conductive elastic part is fixedly connected with one side of the current collecting disc, and the other side of the current collecting disc is fixedly connected with the battery roll core. The battery pole and the current collecting disc are connected through the conductive elastic piece, so that the conduction between the interior of the battery and the pole is realized, and the potential safety hazard caused by the stress concentration effect caused by the bending of the conventional I-shaped current collecting disc structure is effectively avoided; meanwhile, the bending process of the current collecting disc is completely cancelled, so that the production efficiency is improved, the defects caused by the bending process of the current collecting disc are avoided, and the production cost is reduced.
Description
Technical Field
The utility model relates to a power battery especially relates to a cylinder type battery apron.
Background
At present, along with the improvement of the energy density of the lithium ion battery, the size of the cylindrical battery is developed in an increasingly larger direction. In order to improve the problems of insufficient multiplying power and cycle performance of the large cylindrical battery, the battery roll core is designed to be flat by adopting a full-lug kneading mode, and the current collecting disc of the cover plate is connected with the battery roll core by a laser welding mode between the roll core and the cover plate of the large cylindrical battery.
At present, a large cylindrical battery cover plate and current collecting plate mostly adopts an I-shaped integrated structure, the positive electrode is made of aluminum, the negative electrode is made of copper nickel plating, one end of the current collecting plate is connected with a terminal rivet, and the other end of the current collecting plate is connected with a current collecting plate welding area. In the prior art, after the current collecting plate is welded, two ends of the current collecting plate can be placed into a shell through a bending process, in order to ensure the tight fit degree inside a battery cell, the folding angle of the current collecting plate is often required to be nearly 180 degrees, stress concentration is easily generated at the bending position to cause microcracks inside materials, the bending process can increase the risk of fracture of the current collecting plate, and the battery has the hidden danger of internal open circuit and short circuit after being taken off for a long time, so that safety accidents are caused.
SUMMERY OF THE UTILITY MODEL
For solving the above problem, the utility model provides a cylinder type battery apron can effectively stop the current collecting plate and buckle the safety problem that brings.
The utility model adopts the technical proposal that: a cylindrical battery cover plate is characterized in that: the battery cover plate comprises a battery cover plate substrate, a battery pole, a pole rivet and a current collecting plate, wherein one end of the pole rivet penetrates through the battery cover plate substrate, and the battery pole is fixedly arranged on one side of the battery cover plate substrate; the other end of the pole rivet is fixedly connected with one end of the conductive elastic piece on the other side of the base plate of the pool cover plate; the other end of the conductive elastic part is fixedly connected with one side of the current collecting disc, and the other side of the current collecting disc is fixedly connected with the battery roll core.
Preferably, the battery cover plate substrate is provided with two rivet holes, two pole rivets are arranged in the rivet holes, and each pole rivet is fixedly connected with the current collecting plate through one conductive elastic piece.
Furthermore, two rivet holes are internally provided with an insulating sleeve.
Preferably, an insulating plate is arranged between the battery cover plate substrate and the battery pole.
Preferably, the conductive elastic member is a spring of a metal structure.
Preferably, an insulation stop frame is arranged on one side, close to the current collecting disc, of the base plate of the battery cover plate.
Preferably, the battery cover plate substrate is provided with a liquid injection hole.
The utility model discloses the beneficial effect who gains is: the battery pole and the current collecting disc are connected through the conductive elastic piece, so that the conduction between the interior of the battery and the pole is realized, and the potential safety hazard caused by the stress concentration effect caused by the bending of the conventional I-shaped current collecting disc structure is effectively avoided; meanwhile, the bending process of the current collecting disc is completely cancelled, so that the production efficiency is improved, the defects caused by the bending process of the current collecting disc are avoided, and the production cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
wherein: 1-a current collecting disc; 2-a conductive elastic member; 3-pole rivet; 4-an insulating stop frame; 5-a battery cover plate substrate; 6-liquid injection hole; 7-a battery post; 8-insulating plate.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3, the cylindrical battery cover plate of the present invention comprises a battery cover plate substrate 5, a battery post 7, a post rivet 3 and a current collecting plate 1, wherein one end of the post rivet 3 penetrates through the battery cover plate substrate 5, and the battery post 7 is riveted and fixed on one side of the battery cover plate substrate 5; the other end of the pole rivet 3 is fixedly connected with one end of the conductive elastic piece 2 on the other side of the base plate 5 of the pool cover plate; the other end of the conductive elastic part 2 is fixedly connected with one side of the current collecting disc 1, and the other side of the current collecting disc 1 is fixedly connected with the battery roll core. The invention realizes the conduction between the interior of the battery and the pole through the connection form of the battery pole column, the pole column rivet, the conductive elastic piece and the current collecting disc, avoids the potential safety hazard generated by the stress concentration effect caused by the bending of the current collecting disc compared with the conventional I-shaped current collecting disc structure, and simultaneously completely cancels the bending process of the current collecting disc, improves the production efficiency and reduces the production cost.
In this embodiment, be equipped with two rivet holes in the middle of battery cover plate base plate 5, all be equipped with utmost point post rivet 3 in two rivet holes, every utmost point post rivet 3 all through a conductive elastic component 2 and current collection dish 1 fixed connection. Connect battery utmost point post 7 and current collection dish 1 through two utmost point post rivets 3, the structure is more reliable and more stable. Meanwhile, insulating sleeves are arranged in the two rivet holes.
In this embodiment, an insulating plate 8 is disposed between the battery cover plate substrate 5 and the battery post 7.
In this embodiment, the conductive elastic member 2 is a spring of a metal structure, and may be other members having an elastic conductive function as long as the functions of electrical conduction and expansion are achieved. The spring can be made of metal and alloy materials with higher conductivity, high strength, good plasticity and toughness, fatigue resistance and corrosion resistance.
In this embodiment, the battery cover plate substrate 5 is provided with an insulation stopper 4 on a side close to the current collecting plate 1.
In this embodiment, the battery cover plate substrate 5 is provided with a liquid injection hole 6.
In the battery core assembling process, after the flat rolling core is attached and fixed to the bottom of the current collecting disc 1 by using a tool, the battery cover plate substrate 5 on the top of the spring 2 is pulled to one side to expose the welding position of the current collecting disc 1 for welding, and after the welding is finished, the battery cover plate substrate 5 can return to the original position under the action of the spring 2, so that the connection of the positive and negative cover plates and the rolling core is realized.
Here, it should be noted that the description of the above technical solutions is exemplary, the present specification may be embodied in different forms, and should not be construed as being limited to the technical solutions set forth herein. Rather, these descriptions are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solution of the present invention is limited only by the scope of the claims.
The shapes, sizes, ratios, angles, and numbers disclosed to describe aspects of the specification and claims are examples only, and thus, the specification and claims are not limited to the details shown. In the following description, when a detailed description of related known functions or configurations is determined to unnecessarily obscure the focus of the present specification and claims, the detailed description will be omitted.
Where the terms "comprising", "having" and "including" are used in this specification, there may be another part or parts unless otherwise stated, and the terms used may generally be in the singular but may also be in the plural.
It should be noted that although the terms "first," "second," "top," "bottom," "side," "other," "end," "other end," and the like may be used and used in this specification to describe various components, these components and parts should not be limited by these terms. These terms are only used to distinguish one element or section from another element or section. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with the top and bottom elements being interchangeable or switchable with one another under certain circumstances, without departing from the scope of this specification; the components at one end and the other end may be the same or different in performance from one another.
In describing positional relationships, for example, when positional sequences are described as being "on.. Above", "over.. Below", "below", and "next", unless such words or terms are used as "exactly" or "directly", they may include cases where there is no contact or contact therebetween. If a first element is referred to as being "on" a second element, that does not mean that the first element must be above the second element in the figures. The upper and lower portions of the member will change depending on the angle of view and the change in orientation. Thus, in the drawings or in actual construction, if a first element is referred to as being "on" a second element, it can be said that the first element is "under" the second element and the first element is "over" the second element. In describing temporal relationships, unless "exactly" or "directly" is used, the description of "after", "subsequently", and "before" may include instances where there is no discontinuity between steps. The features of the various embodiments of the present invention may be partially or fully combined or spliced with each other and may be implemented in a variety of different configurations as would be well understood by one of ordinary skill in the art. Embodiments of the present invention may be performed independently of each other, or may be performed together in an interdependent relationship.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should be considered as belonging to the protection scope of the present invention.
Claims (7)
1. A cylindrical battery cover plate is characterized in that: the battery cover plate comprises a battery cover plate substrate, a battery pole, a pole rivet and a current collecting plate, wherein one end of the pole rivet penetrates through the battery cover plate substrate, and the battery pole is fixedly arranged on one side of the battery cover plate substrate; the other end of the pole rivet is fixedly connected with one end of the conductive elastic piece on the other side of the base plate of the pool cover plate; the other end of the conductive elastic part is fixedly connected with one side of the current collecting disc, and the other side of the current collecting disc is fixedly connected with the battery roll core.
2. The cylindrical battery cap plate according to claim 1, wherein: the battery cover plate substrate is provided with two rivet holes, the two rivet holes are internally provided with pole rivets, and each pole rivet is fixedly connected with the current collecting plate through one conductive elastic part.
3. The cylindrical battery cap plate according to claim 2, wherein: and insulating sleeves are arranged in the two rivet holes.
4. The cylindrical battery cap plate according to claim 1, wherein: an insulating plate is arranged between the battery cover plate substrate and the battery pole.
5. The cylindrical battery cap plate according to claim 1, wherein: the conductive elastic piece is a spring with a metal structure.
6. The cylindrical battery cap plate according to claim 1, wherein: and an insulating stop frame is arranged on one side of the battery cover plate substrate close to the current collecting disc.
7. The cylindrical battery cap plate according to claim 1, wherein: the battery cover plate substrate is provided with a liquid injection hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222527248.6U CN218334033U (en) | 2022-09-23 | 2022-09-23 | Cylindrical battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222527248.6U CN218334033U (en) | 2022-09-23 | 2022-09-23 | Cylindrical battery cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218334033U true CN218334033U (en) | 2023-01-17 |
Family
ID=84818858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222527248.6U Active CN218334033U (en) | 2022-09-23 | 2022-09-23 | Cylindrical battery cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218334033U (en) |
-
2022
- 2022-09-23 CN CN202222527248.6U patent/CN218334033U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |