CN208539023U - A kind of cylindrical battery - Google Patents

A kind of cylindrical battery Download PDF

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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
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CN
China
Prior art keywords
negative electrode
electrode tab
positive plate
cylindrical battery
cap
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
Application number
CN201820458130.3U
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Chinese (zh)
Inventor
朱传钦
周显茂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Weiduli New Energy Co Ltd
CHONGQING ZIJIAN ELECTRONICS CO LTD
Original Assignee
Guangdong Weiduli New Energy Co Ltd
CHONGQING ZIJIAN ELECTRONICS CO LTD
Priority date (The priority date 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 date listed.)
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Application filed by Guangdong Weiduli New Energy Co Ltd, CHONGQING ZIJIAN ELECTRONICS CO LTD filed Critical Guangdong Weiduli New Energy Co Ltd
Priority to CN201820458130.3U priority Critical patent/CN208539023U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model provides a kind of cylindrical battery, including positive plate, negative electrode tab and diaphragm, the positive plate, the diaphragm and the negative electrode tab are sequentially overlapped and coiling forms battery core, the negative electrode tab is arranged in outermost, the positive plate is arranged in most inner side, cathode sky copper foil is in contact with the inner wall of shell, realize conducting, after battery charging, diametrical direction can expand, and the electrical contact of the inner wall of cathode sky copper foil and shell can be better, and not need design very big for the mesoporous of battery, 2 millimeters or less, improve space utilization rate.

Description

A kind of cylindrical battery
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.
CN201820458130.3U 2018-03-31 2018-03-31 A kind of cylindrical battery Active CN208539023U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820458130.3U CN208539023U (en) 2018-03-31 2018-03-31 A kind of cylindrical battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820458130.3U CN208539023U (en) 2018-03-31 2018-03-31 A kind of 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 kind of cylindrical battery

Country Status (1)

Country Link
CN (1) CN208539023U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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