CN2757344Y - Cylindrical lithium secondary cell - Google Patents
Cylindrical lithium secondary cell Download PDFInfo
- Publication number
- CN2757344Y CN2757344Y CNU2004200457057U CN200420045705U CN2757344Y CN 2757344 Y CN2757344 Y CN 2757344Y CN U2004200457057 U CNU2004200457057 U CN U2004200457057U CN 200420045705 U CN200420045705 U CN 200420045705U CN 2757344 Y CN2757344 Y CN 2757344Y
- Authority
- CN
- China
- Prior art keywords
- annular
- cylindrical lithium
- sealing ring
- lithium secondary
- shaped sealing
- 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
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 125000006850 spacer group Chemical group 0.000 claims description 17
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000005755 formation reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- Y02E60/122—
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The utility model relates to a cylindrical lithium secondary cell, which comprises a cylindrical outer shell, a cap cover, an annular current limiting sheet, a circular conductive pad sheet, an annular cup-shaped sealing ring, a positive pole ear and a rolling core. Annular groove wires or dummy club wires form a joint relation by that the annular groove wires or the dummy club wires are formed on the outer wall of the annular cup-shaped sealing ring and the inner wall of the cylindrical outer shell, the annular groove wires or the dummy club wires can be close jointed together, thereby, the purpose that the sealing performance of the cylindrical lithium secondary cell is enhanced is realized.
Description
Technical field
The utility model relates to a kind of lithium secondary battery, relates in particular to a kind of cylindrical lithium secondary battery
Background technology
Known cylindrical lithium secondary battery generally includes cylinder blanket, cap, annular constrictor, circular conductive spacer, annular cup-shaped sealing ring, anode ear, several parts formations of volume core; Wherein anode ear is welded on the circular conductive spacer, by annular cup-shaped sealing ring cap, annular constrictor, circular conductive spacer, the injection moulding of annular cup-shaped sealing ring are combined or be superimposed and be pressed in the column type shell, seal or weld by machinery and form complete cylindrical lithium ion battery.Because of annular cup-shaped sealing ring outer wall and cylinder blanket inwall do not have annular groove line or boss line, be easy to generate looseningly between annular cup-shaped sealing ring and the cylinder blanket, form the slit, so sealing is relatively poor.
Therefore prior art has defective, awaits improving and development.
The utility model content
The purpose of this utility model is that in order to solve the relatively poor shortcoming of sealing in the prior art, the utility model provides a kind of cylindrical lithium secondary battery, realizes improving the purpose of sealing.
The technical solution of the utility model is as follows:
A kind of cylindrical lithium secondary battery comprises that cylinder blanket, cap, annular constrictor, circular conductive spacer, annular cup-shaped sealing ring, anode ear, several parts of volume core constitute; Wherein anode ear is welded on the circular conductive spacer, by annular cup-shaped sealing ring cap, annular constrictor, circular conductive spacer, the injection moulding of annular cup-shaped sealing ring are combined or be superimposed and be pressed in the column type shell, seal or weld the complete cylindrical lithium ion battery of formation by machinery, wherein, on annular cup-shaped sealing ring outer wall and cylinder blanket inwall, form the groove line or the boss line of annular, groove line or boss line form relationship in a mutual action, can be entrenched togather closely.
Described a kind of cylindrical lithium secondary battery, wherein, described groove line or boss line are at least one.
Described a kind of cylindrical lithium secondary battery is characterized in that, described circular conductive spacer is uniform concave surface of thin and thick or convex surface.
A kind of cylindrical lithium secondary battery provided by the utility model owing to adopted technique scheme, makes annular cup-shaped sealing ring and cylinder blanket closely chimeric, has improved the sealing of battery; The circular conductive spacer of uniform concave surface of thin and thick or convex surface with respect to the circular conductive spacer of the plane of prior art, has improved intensity, has increased and the contacting of constrictor, and has improved sealing and conductivity.
Description of drawings
In the accompanying drawing,
Fig. 1 is the exploded view of a kind of cylindrical lithium secondary battery of the present utility model;
Fig. 2 is the profile of a kind of cylindrical lithium secondary battery of the present utility model;
Fig. 3 is the profile of the annular cup-shaped sealing ring of a kind of cylindrical lithium secondary battery of the present utility model.
Embodiment
Below, will describe a preferred embodiment of the present utility model in detail.
A kind of cylindrical lithium secondary battery comprises that cylinder blanket 7, cap 1, annular constrictor 2, circular conductive spacer 3, annular cup-shaped sealing ring 4, anode ear 5, volume core more than 6 parts constitute; Wherein anode ear 5 is welded on the circular conductive spacer 3, by annular cup-shaped sealing ring 4 cap 1, annular constrictor 2, circular conductive spacer 3, annular cup-shaped sealing ring 4 injection mouldings are combined or are superimposed and are pressed in the column type shell 7, seal or weld the complete cylindrical lithium ion battery of formation by machinery, wherein, on annular cup-shaped sealing ring 4 outer walls and cylinder blanket 7 inwalls, form the groove line or the boss line of annular, groove line or boss line form relationship in a mutual action, can be entrenched togather closely.
Described a kind of cylindrical lithium secondary battery, wherein, described groove line or boss line are at least one.
Described a kind of cylindrical lithium secondary battery is characterized in that, described circular conductive spacer 3 is uniform concave surface of thin and thick or convex surface.
In order better to reach sealing effectiveness, the colloid of discord electrolyte generation chemical reactions such as resin or pitch is coated in the assembling back at cylinder blanket 7 inwalls and annular cup-shaped sealing ring 4 outer walls.
Claims (3)
1, a kind of cylindrical lithium secondary battery comprises that cylinder blanket, cap, annular constrictor, circular conductive spacer, annular cup-shaped sealing ring, anode ear, several parts of volume core constitute; Wherein anode ear is welded on the circular conductive spacer, by annular cup-shaped sealing ring cap, annular constrictor, circular conductive spacer, the injection moulding of annular cup-shaped sealing ring are combined or be superimposed and be pressed in the column type shell, seal or weld the complete cylindrical lithium ion battery of formation by machinery, it is characterized in that, on annular cup-shaped sealing ring outer wall and cylinder blanket inwall, form the groove line or the boss line of annular, groove line or boss line form relationship in a mutual action, can be entrenched togather closely.
2, a kind of cylindrical lithium secondary battery according to claim 1 is characterized in that, described groove line or boss line are at least one.
3, a kind of cylindrical lithium secondary battery according to claim 1 and 2 is characterized in that, described circular conductive spacer is uniform concave surface of thin and thick or convex surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200457057U CN2757344Y (en) | 2004-05-13 | 2004-05-13 | Cylindrical lithium secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200457057U CN2757344Y (en) | 2004-05-13 | 2004-05-13 | Cylindrical lithium secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2757344Y true CN2757344Y (en) | 2006-02-08 |
Family
ID=35965728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200457057U Expired - Lifetime CN2757344Y (en) | 2004-05-13 | 2004-05-13 | Cylindrical lithium secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2757344Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000239A1 (en) * | 2009-06-29 | 2011-01-06 | 深圳市比克电池有限公司 | A manufacturing method for cylindrical battery imporving the capacity of battery |
| CN115332693A (en) * | 2022-10-14 | 2022-11-11 | 宁德新能源科技有限公司 | Secondary battery and electronic device |
-
2004
- 2004-05-13 CN CNU2004200457057U patent/CN2757344Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000239A1 (en) * | 2009-06-29 | 2011-01-06 | 深圳市比克电池有限公司 | A manufacturing method for cylindrical battery imporving the capacity of battery |
| CN115332693A (en) * | 2022-10-14 | 2022-11-11 | 宁德新能源科技有限公司 | Secondary battery and electronic device |
| WO2024078623A1 (en) * | 2022-10-14 | 2024-04-18 | 宁德新能源科技有限公司 | Secondary battery and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140513 Granted publication date: 20060208 |