CN2919553Y - Cylinder shaped lithium ion battery - Google Patents
Cylinder shaped lithium ion battery Download PDFInfo
- Publication number
- CN2919553Y CN2919553Y CNU2006201223671U CN200620122367U CN2919553Y CN 2919553 Y CN2919553 Y CN 2919553Y CN U2006201223671 U CNU2006201223671 U CN U2006201223671U CN 200620122367 U CN200620122367 U CN 200620122367U CN 2919553 Y CN2919553 Y CN 2919553Y
- Authority
- CN
- China
- Prior art keywords
- tubular article
- ion battery
- lithium ion
- core
- volume core
- 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
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 16
- 239000003792 electrolyte Substances 0.000 claims abstract description 5
- 238000005868 electrolysis reaction Methods 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004804 winding Methods 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
- Secondary Cells (AREA)
Abstract
The utility model relates to a cylindrical lithium-ion battery which comprises a cylinder, a core which is contained in the cylinder, an electrolyte which is infiltrated in the core, a barrel-shaped object and a cover board, the barrel-shaped object is positioned at the central axis of the core, the end of the barrel-shaped object is in curled shape with the caliber smaller than the diameter of the middle section of the barrel-shaped object. The utility model provides a cylindrical lithium-ion battery with less local action and good safety performance.
Description
Technical field
The utility model relates to a kind of lithium ion battery, relates in particular to the column lithium ion battery that a kind of inside is placed with cylindric thing.
Background technology
The volume core of cylindrical lithium ion battery all is to make by the mode of reeling, also make the middle space that has certain diameter of volume core just because of coiling, the existence in space makes the volume in-core portion of cylindrical lithium ion battery contact not tight with negative plate by the positive plate that barrier film separates, and then influencing the performance performance of battery, the cycle performance and the consistency of battery are poor.A kind of column lithium ion battery in Chinese patent CN2743996 provides, thus the problems referred to above solved by the tubular article that is preserved for reeling at the volume in-core.In order to improve the winding speed of volume core, tubular article has adopted the production technology of follow-up insertion volume core, and this just causes tubular article to insert volume core destruction volume in-core bilge construction, scratches barrier film and causes inner micro-short circuit even short circuit to be scrapped.Show through statistics, cause short circuit to be scrapped or the volume core repaired accounts for 0.2～0.5% because of inserting tubular article; In addition, the quality problems that 0.03～0.05% volume core exists inner micro-short circuit to exceed standard of also having an appointment.The cylindrical battery that adopts above-mentioned tubular article to make has that self discharge is serious, poor safety performance technological deficiency.
Summary of the invention
The purpose of this utility model be solve that the self-discharge of battery that tubular article causes is serious, poor safety performance technological deficiency, the column lithium ion battery that a kind of self discharge is little, security performance is good is provided.
Realize the technical scheme of above-mentioned purpose:
A kind of column lithium ion battery, comprise cylindrical shell, be contained in volume core, electrolyte, tubular article and the cover plate of infiltration in the volume core in the cylindrical shell, described tubular article is positioned on the central axis of volume core, cover plate covers and is sealed on the cylindrical shell, described tubular article end is the gathering shape, and the end bore is less than tubular article middle part diameter of section.
Further, described tubular article is provided with axially open.
The sidewall of described tubular article is provided with a plurality of through holes of being convenient to capillary electrolysis liquid.
Adopt technique scheme, the utility model beneficial technical effects is: the axially open that is provided with on the tubular article, and the end of gathering shape can make things convenient for tubular article to put into the volume core; Damage positive plate, negative plate or barrier film when avoiding inserting tubular article.Because a plurality of through holes in the sidewall setting of tubular article have solved, the ageing insufficient battery charging and discharging performance poor technical problem that cause slow because of electrolyte permeability.
Description of drawings
Fig. 1 is the center cut away view of the utility model column lithium ion battery;
Fig. 2 is the structural representation of tubular article among Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 2.
Fig. 4 is the structural representation of another kind of tubular article.
Fig. 5 is the B-B cutaway view of Fig. 4.
Embodiment
Below in conjunction with accompanying drawing in detail embodiment of the present utility model is described in detail:
A kind of column lithium ion battery as Fig. 1, Fig. 2 and shown in Figure 3, comprises cylindrical shell 1, is contained in volume core 2 in the cylindrical shell 1, electrolyte in volume core 2 of cover plate 3 and infiltration (among the figure not label).The inside of volume core 2 is placed with and supports volume core 2, prevents to roll up the tubular article 4 of core 2 distortion, the sidewall of this tubular article 4 is provided with a plurality of through hole 5 and axially opens 6 of being convenient to capillary electrolysis liquid, the end 7,7 ' of tubular article 4 is the gathering shape, be end 7,7 ' bore a less than tubular article 4 middle part diameter of section b, cover plate 3 covers and is sealed on the cylindrical shell 1.As required, also can adopt Fig. 4 and tubular article 4 shown in Figure 5, not have axially open on this tubular article 4, other structure is identical with the structure of above-mentioned tubular article.
Claims (3)
1, a kind of column lithium ion battery, comprise cylindrical shell, be contained in volume core, electrolyte, tubular article and the cover plate of infiltration in the volume core in the cylindrical shell, described tubular article is positioned on the central axis of volume core, cover plate covers and is sealed on the cylindrical shell, it is characterized in that: described tubular article end is the gathering shape, and the end bore is less than tubular article middle part diameter of section.
2, column lithium ion battery as claimed in claim 1 is characterized in that: described tubular article is provided with axially open.
3, column lithium ion battery as claimed in claim 1 or 2 is characterized in that: the sidewall of described tubular article is provided with a plurality of through holes of being convenient to capillary electrolysis liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201223671U CN2919553Y (en) | 2006-07-12 | 2006-07-12 | Cylinder shaped lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201223671U CN2919553Y (en) | 2006-07-12 | 2006-07-12 | Cylinder shaped lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2919553Y true CN2919553Y (en) | 2007-07-04 |
Family
ID=38217372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201223671U Expired - Lifetime CN2919553Y (en) | 2006-07-12 | 2006-07-12 | Cylinder shaped lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2919553Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8252438B2 (en) | 2009-06-26 | 2012-08-28 | Byd Co., Ltd. | Lithium ion battery |
| CN109041584A (en) * | 2017-09-07 | 2018-12-18 | 深圳市大疆创新科技有限公司 | Lithium metal battery |
-
2006
- 2006-07-12 CN CNU2006201223671U patent/CN2919553Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8252438B2 (en) | 2009-06-26 | 2012-08-28 | Byd Co., Ltd. | Lithium ion battery |
| CN109041584A (en) * | 2017-09-07 | 2018-12-18 | 深圳市大疆创新科技有限公司 | Lithium metal battery |
| WO2019047107A1 (en) * | 2017-09-07 | 2019-03-14 | 深圳市大疆创新科技有限公司 | Lithium metal battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070704 |
|
| EXPY | Termination of patent right or utility model |