CN208539023U - a cylindrical battery - Google Patents
a cylindrical battery Download PDFInfo
- Publication number
- CN208539023U CN208539023U CN201820458130.3U CN201820458130U CN208539023U CN 208539023 U CN208539023 U CN 208539023U CN 201820458130 U CN201820458130 U CN 201820458130U CN 208539023 U CN208539023 U CN 208539023U
- Authority
- CN
- China
- Prior art keywords
- negative electrode
- cylindrical battery
- cap
- collector
- electrode tab
- 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.)
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Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011889 copper foil Substances 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 16
- 239000005030 aluminium foil Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material 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
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
本实用新型提供了一种圆柱电池，包括正极片、负极片和隔膜，所述正极片、所述隔膜和所述负极片依次叠加且绕卷形成电芯，所述负极片设置在最外侧，所述正极片设置在最内侧，负极空铜箔与壳体的内壁相接触，实现导通，当电池充电后，直径方向会膨胀，负极空铜箔与壳体的内壁电接触会更加良好，而电池芯的中孔不需要设计很大，2毫米以下即可，提高了空间利用率。
The utility model provides a cylindrical battery, comprising a positive electrode sheet, a negative electrode sheet and a separator, the positive electrode sheet, the separator and the negative electrode sheet are stacked in sequence and rolled to form a battery core, and the negative electrode sheet is arranged at the outermost side, The positive electrode sheet is arranged on the innermost side, and the negative electrode empty copper foil is in contact with the inner wall of the casing to realize conduction. When the battery is charged, the diameter direction will expand, and the electrical contact between the negative electrode empty copper foil and the inner wall of the casing will be better. The middle hole of the battery cell does not need to be designed to be very large, only less than 2 mm, which improves the space utilization rate.
Description
Technical field
The utility model relates to field of lithium ion battery more particularly to a kind of cylindrical batteries.
Background technique
Traditional cylindrical battery, as shown in Figure 1, including internal battery core 10, negative electrode lug copper bar or nickel bar 20, battery core mesoporous
30, wherein the diameter of battery core mesoporous 30 is greater than 2 millimeters.
When assembling, such as Fig. 2, negative electrode lug copper bar or nickel bar 2 will bend and cover battery core mesoporous 30, then internal battery core 10 is put into
In shell 40, as Fig. 3 realizes negative electrode lug copper bar or nickel bar 20 and shell 40 using relatively fine capillary by battery core mesoporous 30
Welding, shortcoming is that the diameter of battery core mesoporous 30 is big, is had a great impact to the space utilization rate of battery.
Utility model content
The purpose of this utility model is that in view of the above shortcomings of the prior art, providing a kind of cylindrical battery, Neng Gouti
The space utilization rate of high battery, to improve the energy density of battery.
To achieve the above object, the utility model adopts the technical scheme that
The utility model provides a kind of cylindrical battery, including positive plate, negative electrode tab and diaphragm, the positive plate, described
Diaphragm and the negative electrode tab are sequentially overlapped and coiling forms battery core, and the negative electrode tab setting is in outermost, the positive plate setting
In most inner side；
The negative electrode tab includes negative collector, and the side of the negative collector is cathode sky copper foil,
The positive plate includes positive collector, and the side of the positive collector is the empty aluminium foil of anode, and the empty aluminium of the anode
Anode ear is welded on foil；
The cathode sky copper foil is in contact with the inner wall of shell, and the anode ear is mutually welded with cap.
Further, the middle part of the battery core is equipped with mesoporous, and the diameter of the mesoporous is less than 2 millimeters.
Further, the open end of the cap is equipped with aluminium flake, sealed set between the cap and the aluminium flake.
Further, the aluminium flake is equipped with groove, is equipped with safety valve on the groove.
Further, the end between the cap, the shell and the aluminium flake is coated with glue layer.
The utility model has the following beneficial effects: cathode sky copper foil is in contact with the inner wall of shell, conducting is realized, when battery fills
After electricity, diametrical direction can expand, and the inner wall electrical contact of cathode sky copper foil and shell can be better.Since cathode has realized that electricity connects
Touching, therefore do not need to recycle battery core mesoporous spot welding negative electrode casing, such battery core mesoporous can design very little, can reach 2 millimeters
Hereinafter, improving space utilization rate.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of the prior art；
Fig. 2 is the second structural representation of the prior art；
Fig. 3 is the third structural representation of the prior art；
Fig. 4 is a kind of structural schematic diagram of cylindrical battery of the utility model；
Fig. 5 is the structural schematic diagram of negative current collector.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and implement
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
Referring to Fig. 4, a kind of cylindrical battery, including positive plate, negative electrode tab and diaphragm, the positive plate, the diaphragm and
The negative electrode tab is sequentially overlapped and coiling forms battery core 3, and in outermost, the positive plate is arranged most interior for the negative electrode tab setting
Side；
The negative electrode tab includes negative collector, and the side of the negative collector is cathode sky copper foil 201, such as Fig. 5
Wherein, negative electrode active material is also coated on negative collector.
The positive plate includes positive collector, and the side of the positive collector is the empty aluminium foil of anode, and the empty aluminium of the anode
Anode ear is welded on foil；
Wherein, positive active material is also coated on positive collector.
The cathode sky aluminium foil 201 is in contact with the inner wall of shell 4, and the anode ear is welded with 5 phase of cap.
That is, cathode sky copper foil 201 is in contact with the inner wall of shell 4 after battery core 3 is inserted into shell 4, realizes conducting, work as battery
After charging, diametrical direction can expand, the inner wall of cathode sky aluminium foil 201 and shell 4, and electrical contact can be better.
The middle part of the battery core 3 is equipped with mesoporous 301, and the diameter of the mesoporous 301 is less than 2 millimeters.Mesoporous 301 can design
Very little improves space utilization rate.
The open end of the cap 5 is equipped with aluminium flake 12, sealed set between the cap 5 and the aluminium flake 12.
The aluminium flake 12 is equipped with groove, is equipped with safety valve 13 on the groove.
End between the cap 5, the shell 4 and the aluminium flake 12 is coated with glue layer.It can prevent remaining
A small amount of electrolyte is in communication with the outside.Even if not having conductive ion generation under the big environment of humidity, self-discharge of battery does not have shadow
It rings.
The above-mentioned embodiments merely express the embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Therefore it cannot be interpreted as that a limitation on the scope of the patent of the present invention.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this
The protection scope of utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (5)
1. a kind of cylindrical battery, including positive plate, negative electrode tab and diaphragm, it is characterised in that: the positive plate, the diaphragm and institute
State that negative electrode tab is sequentially overlapped and coiling forms battery core (3), negative electrode tab setting is arranged in outermost, the positive plate most interior
Side；
The negative electrode tab includes negative collector, and the side of the negative collector is cathode sky copper foil (201),
The positive plate includes positive collector, and the side of the positive collector is the empty aluminium foil of anode, and on the empty aluminium foil of the anode
It is welded with anode ear；
The cathode sky copper foil (201) is in contact with the inner wall of shell (4), and the anode ear is mutually welded with cap (5).
2. a kind of cylindrical battery according to claim 1, it is characterised in that: the middle part of the battery core (3) is equipped with mesoporous
(301), the diameter of the mesoporous (301) is less than 2 millimeters.
3. a kind of cylindrical battery according to claim 1, it is characterised in that: the open end of the cap (5) is equipped with aluminium flake
(12), sealed set between the cap (5) and the aluminium flake (12).
4. a kind of cylindrical battery according to claim 3, it is characterised in that: the aluminium flake (12) is equipped with groove, described
Safety valve (13) are installed on groove.
5. a kind of cylindrical battery according to claim 3, it is characterised in that: the cap (5), the shell (4) and institute
The end stated between aluminium flake (12) is coated with glue layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820458130.3U CN208539023U (en) | 2018-03-31 | 2018-03-31 | a cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820458130.3U CN208539023U (en) | 2018-03-31 | 2018-03-31 | a cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208539023U true CN208539023U (en) | 2019-02-22 |
Family
ID=65396376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820458130.3U Active CN208539023U (en) | 2018-03-31 | 2018-03-31 | a cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208539023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391480A (en) * | 2019-08-12 | 2019-10-29 | 银隆新能源股份有限公司 | A kind of cylindrical cell |
-
2018
- 2018-03-31 CN CN201820458130.3U patent/CN208539023U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391480A (en) * | 2019-08-12 | 2019-10-29 | 银隆新能源股份有限公司 | A kind of cylindrical cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 400000 Zhaojia Industrial Park, Kaizhou District, Chongqing Patentee after: Chongqing Zijian Electronic Co.,Ltd. Country or region after: China Patentee after: GUANGDONG VDL NEW ENERGY CO.,LTD. Address before: 400000 Zhaojia Industrial Park, Kaizhou District, Chongqing Patentee before: CHONGQING VDL ELECTRONICS Co.,Ltd. Country or region before: China Patentee before: GUANGDONG VDL NEW ENERGY CO.,LTD. |
|
| CP03 | Change of name, title or address |