CN202695645U - Base mat of cylindrical lithium battery - Google Patents
Base mat of cylindrical lithium battery Download PDFInfo
- Publication number
- CN202695645U CN202695645U CN2012203115624U CN201220311562U CN202695645U CN 202695645 U CN202695645 U CN 202695645U CN 2012203115624 U CN2012203115624 U CN 2012203115624U CN 201220311562 U CN201220311562 U CN 201220311562U CN 202695645 U CN202695645 U CN 202695645U
- Authority
- CN
- China
- Prior art keywords
- heelpiece
- lithium battery
- opening
- base mat
- base
- 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.)
- Expired - Lifetime
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Classifications
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model belongs to the technical field of a battery base mat and particularly relates to a base mat of a cylindrical lithium battery. A central hole is arranged in the center of the base mat, and an opening for a negative lug to be sleeved in is arranged at the edge of the base mat. The base mat of the cylindrical lithium battery can prevent the negative lug at the base mat from pressing a roll core.
Description
Technical field
The utility model belongs to battery heelpiece technical field, particularly a kind of heelpiece of cylinder type lithium battery.
Background technology
At present, the heelpiece of cylinder type lithium battery mainly adopts is annular gasket with centre bore, when negative lug the volume core outmost turns the time, annular gasket is placed on volume core bottom, the bending negative electrode lug to the annular gasket after, the air ring sector-meeting is to the direction skew of bending negative electrode lug indication, some pad has exceeded the volume core, after putting into box hat point back welding, curved lug place, core bottom is rolled up in the pad extruding, has increased the probability of internal short-circuit of battery.
The utility model content
The purpose of this utility model is to avoid weak point of the prior art and a kind of heelpiece of cylinder type lithium battery of the negative lug extruding volume core of avoiding the heelpiece place is provided.
The purpose of this utility model is achieved through the following technical solutions:
Be provided with centre bore in the middle of the heelpiece of cylinder type lithium battery, the edge of described heelpiece is provided with the opening that allows negative lug be inserted in.
Wherein, described opening comprises first side, second side and base, and the length on described base equals the width of described opening, and the length of described first side is identical with the length of described second side, and the length of described first side equals the degree of depth of described opening.
Wherein, the width of described opening is 0.2 times～0.35 times of external diameter of described heelpiece.
Wherein, the degree of depth of described opening is 0.08 times～0.16 times of external diameter of described heelpiece.
Wherein, the diameter of described centre bore is 0.2 times～0.35 times of external diameter of described heelpiece.
Wherein, the angle between described first side and the described base is right angle or fillet, and the angle between described second side and the described base is right angle or fillet.
Wherein, the external diameter of described heelpiece is 17.2mm, and the diameter of described centre bore is 4.6mm, and described width is 4.4mm, and described height is 1.9mm.
The beneficial effects of the utility model:
The utility model passes through the opening at the edge of described heelpiece, and negative lug can directly be inserted in described opening easily, effectively avoids the negative lug extruding volume core at heelpiece place, thereby has avoided the destruction of lithium battery interior.
Description of drawings
Fig. 1 is the structural representation of the heelpiece of a kind of cylinder type lithium battery of the present utility model.
Reference numeral
23-base, 22-second side, 1-heelpiece 2-opening 21-first side
The 3-centre bore.
Embodiment
Below in conjunction with drawings and the specific embodiments the utility model is described in further detail.
In the present embodiment, as shown in Figure 1, be provided with centre bore 3 in the middle of the heelpiece 1 of cylinder type lithium battery, the edge of described heelpiece 1 is provided with the opening 2 that allows negative lug be inserted in.
The opening 2 at the edge by described heelpiece 1, negative lug can be inserted in described opening 2 easily, effectively avoid the negative lug extruding volume core at heelpiece 1 place, thereby avoided the destruction of lithium battery interior, cause the situations such as the low pressure of lithium battery, high internal resistance and internal short-circuit.
Described opening comprises first side 21, second side 22 and base 23, the length on described base 23 equals the width of described opening 2, the length of described first side 21 is identical with the length of described second side 22, the length of described first side 21 equals the degree of depth of described opening 2, it is 0.2 times～0.35 times of external diameter of described heelpiece 1 at the width of described opening, the degree of depth of described opening is 0.08 times～0.16 times of external diameter of described heelpiece 1, and the diameter of described centre bore 3 is 0.2 times～0.35 times of external diameter of described heelpiece 1.
The ratio of the diameter of the width of described opening, height and centre bore 3 and the external diameter of described heelpiece 1 can adopt corresponding ratio value according to the demand that reality is used.
Angle between described first side 21 and the described base 23 is right angle or fillet, and the angle between described second side 22 and the described base 23 is right angle or fillet.
In the present embodiment, the external diameter of described heelpiece 1 is 17.2mm, and the diameter of described centre bore 3 is 4.6mm, and described width is 4.4mm, and described height is 1.9mm.
Should be noted that at last; above embodiment is only in order to illustrate the technical solution of the utility model; but not to the restriction of the utility model protection range; although with reference to preferred embodiment the utility model has been done to explain; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from essence and the scope of technical solutions of the utility model.
Claims (7)
1. the heelpiece of a cylinder type lithium battery is provided with centre bore in the middle of the described heelpiece, and it is characterized in that: the edge of described heelpiece is provided with the opening that allows negative lug be inserted in.
2. the heelpiece of a kind of cylinder type lithium battery according to claim 1, it is characterized in that: described opening comprises first side, second side and base, the length on described base equals the width of described opening, the length of described first side is identical with the length of described second side, and the length of described first side equals the degree of depth of described opening.
3. the heelpiece of a kind of cylinder type lithium battery according to claim 2 is characterized in that: the width of described opening is 0.2 times～0.35 times of external diameter of described heelpiece.
4. the heelpiece of a kind of cylinder type lithium battery according to claim 2 is characterized in that: the degree of depth of described opening is 0.08 times～0.16 times of external diameter of described heelpiece.
5. the heelpiece of a kind of cylindrical battery according to claim 1 is characterized in that: the diameter of described centre bore is 0.2 times～0.35 times of external diameter of described heelpiece.
6. the heelpiece of a kind of cylindrical battery according to claim 2, it is characterized in that: the angle between described first side and the described base is right angle or fillet, the angle between described second side and the described base is right angle or fillet.
7. the heelpiece of a kind of cylindrical battery according to claim 2, it is characterized in that: the external diameter of described heelpiece is 17.2mm, and the diameter of described centre bore is 4.6mm, and described width is 4.4mm, and described height is 1.9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203115624U CN202695645U (en) | 2012-06-29 | 2012-06-29 | Base mat of cylindrical lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203115624U CN202695645U (en) | 2012-06-29 | 2012-06-29 | Base mat of cylindrical lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202695645U true CN202695645U (en) | 2013-01-23 |
Family
ID=47551214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203115624U Expired - Lifetime CN202695645U (en) | 2012-06-29 | 2012-06-29 | Base mat of cylindrical lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202695645U (en) |
-
2012
- 2012-06-29 CN CN2012203115624U patent/CN202695645U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170308 Address after: 523000 Guangdong Province, Dongguan City Shipai town to the West Village Songyuan 5 Road No. 1 Patentee after: DONGGUAN K-TECH NEW ENERGY CO.,LTD. Address before: Dongguan City, Guangdong Province town of the 523330 row of stone to the West Village Songyuan 5 Road No. 1 Guangdong Cade Energy Technology Co Ltd Patentee before: Guangdong K-TECH Energy Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |