CN2836251Y - Lithium ion battery core and battery - Google Patents
Lithium ion battery core and battery Download PDFInfo
- Publication number
- CN2836251Y CN2836251Y CNU200520108498XU CN200520108498U CN2836251Y CN 2836251 Y CN2836251 Y CN 2836251Y CN U200520108498X U CNU200520108498X U CN U200520108498XU CN 200520108498 U CN200520108498 U CN 200520108498U CN 2836251 Y CN2836251 Y CN 2836251Y
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- battery
- ion battery
- coiling body
- insulating barrier
- 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 21
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 21
- 230000004888 barrier function Effects 0.000 claims abstract description 16
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000011505 plaster Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- Y02E60/122—
Landscapes
- Secondary Cells (AREA)
- Primary Cells (AREA)
Abstract
The utility model relates to a kind of lithium ion battery cell and battery, comprises electrical core coiling body.Be provided with an insulating barrier in described electrical core coiling body bottom, it is easy both can to have made electric core go into shell, can avoid electric core bottom pole piece to contact with battery case again, thereby reduce the battery short circuit phenomenon greatly.
Description
[technical field]
The utility model relates to a kind of lithium ion battery cell and battery.
[background technology]
Lithium secondary battery has operating voltage height, volume and weight energy density height, advantages such as the life-span is long, self-discharge rate is low, memory-less effect, is widely used in fields such as mobile communication equipment, notebook computer at present.But its safety problem is subjected to people's attention always: when electric core was gone into shell, because the shell difficulty is gone in the effect of electric core and battery case frictional force, and electric core pole piece very easily broke by the battery case card, causes that electric core is imperfect, also is easy to cause short circuit; After the electricity core was gone into shell, electric core bottom directly contacted with battery case, makes positive plate or negative plate contact with battery case probably, very easily causes short circuit.
[summary of the invention]
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides that a kind of to go into shell easy, and can effectively reduce the lithium ion battery cell and the battery of short circuit phenomenon.
The utility model is achieved in that a kind of lithium ion battery cell, comprises electrical core coiling body, and described electrical core coiling body bottom is provided with an insulating barrier;
Described insulating barrier is the insulating barrier that can wrap up whole electrical core coiling body bottom;
Described insulating barrier is resistant to elevated temperatures film;
Described film is the high temperature adhesive plaster;
The lithium ion battery that the above-mentioned electric core of a kind of usefulness is made.
The beneficial effects of the utility model are: when 1) the lithium-ion electric core coiling body is gone into shell, the electrical core coiling body bottom contacts with battery case earlier, set in advance an insulating barrier in the electrical core coiling body bottom, reduced the frictional force between electrical core coiling body and the internal surface of battery shell, make to be easier to that has improved electric core greatly goes into shell efficient into the shell ratio; When 2) electrical core coiling body is gone into shell, be provided with an insulating barrier, can prevent the pole piece of the broken electrical core coiling body of battery case card outside, thereby guaranteed the integrality of electrical core coiling body, also reduced the possibility of battery short circuit near the bottom in the bottom; 3) after the battery winding body was gone into shell, the electrical core coiling body bottom directly contacted with the battery case bottom, owing to be provided with an insulating barrier, can avoid pole piece to contact with battery case, thereby avoid short circuit phenomenon former by this thereby that cause.
[description of drawings]
Fig. 1 is the utility model electricity core schematic diagram
[embodiment]
To be example with 053048A1 below, in conjunction with the accompanying drawings 1 and table 1 pair the utility model be elaborated.
Embodiment:
Positive and negative plate and diaphragm paper reeled obtains electrical core coiling body 1, is provided with a high-temp glue layer of cloth 2 in the bottom of electrical core coiling body 1, as shown in Figure 1.Carry out a series of common process then and obtain lithium ion battery.Make 1000 of lithium ion batteries altogether.
Comparative Examples:
Positive and negative plate and diaphragm paper reeled obtain electrical core coiling body 1.Carry out a series of common process then and obtain lithium ion battery.Make 1000 of lithium ion batteries altogether.
Table 1: battery performance relatively
Can obviously be found out by last table: its electric core bottom of lithium ion battery of the present utility model is avoided directly contacting with battery container; so the short circuit ratio of battery obviously reduces; again because a dielectric protection layer is arranged at electric core bottom; therefore can be broken electric core bottom pole piece by the battery case card hardly, thereby improve the security performance of battery greatly.
Although proved absolutely the utility model in conjunction with the accompanying drawings with embodiment; but for industry technical staff; also have various variations and remodeling, as long as these variations and remodeling do not break away from the scope of the invention, they include in the claimed scope of this patent.
Claims (8)
1, a kind of lithium ion battery cell comprises electrical core coiling body, it is characterized in that: described electrical core coiling body bottom is provided with an insulating barrier.
2, lithium ion battery cell as claimed in claim 1 is characterized in that: described insulating barrier is the insulating barrier that can wrap up whole electrical core coiling body bottom.
3, lithium ion battery cell as claimed in claim 2 is characterized in that: described insulating barrier is resistant to elevated temperatures film.
4, lithium ion battery cell as claimed in claim 3 is characterized in that: described film is the high temperature adhesive plaster.
5, a kind of lithium ion battery comprises electrical core coiling body, it is characterized in that: described electrical core coiling body bottom is provided with an insulating barrier.
6, lithium ion battery as claimed in claim 5 is characterized in that: described insulating barrier is the insulating barrier that can wrap up whole electrical core coiling body bottom.
7, lithium ion battery as claimed in claim 6 is characterized in that: described insulating barrier is resistant to elevated temperatures film.
8, lithium ion battery as claimed in claim 7 is characterized in that: described film is the high temperature adhesive plaster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520108498XU CN2836251Y (en) | 2005-05-27 | 2005-05-27 | Lithium ion battery core and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520108498XU CN2836251Y (en) | 2005-05-27 | 2005-05-27 | Lithium ion battery core and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2836251Y true CN2836251Y (en) | 2006-11-08 |
Family
ID=37300901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520108498XU Expired - Lifetime CN2836251Y (en) | 2005-05-27 | 2005-05-27 | Lithium ion battery core and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2836251Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280959A (en) * | 2014-07-22 | 2016-01-27 | 深圳市朗能电池有限公司 | Battery |
| CN112234259A (en) * | 2020-01-06 | 2021-01-15 | 蜂巢能源科技有限公司 | Battery cell manufacturing method and lithium ion battery |
-
2005
- 2005-05-27 CN CNU200520108498XU patent/CN2836251Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280959A (en) * | 2014-07-22 | 2016-01-27 | 深圳市朗能电池有限公司 | Battery |
| CN112234259A (en) * | 2020-01-06 | 2021-01-15 | 蜂巢能源科技有限公司 | Battery cell manufacturing method and lithium ion battery |
| CN112234259B (en) * | 2020-01-06 | 2022-04-12 | 蜂巢能源科技有限公司 | Battery cell manufacturing method and lithium ion battery |
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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: 20150527 Granted publication date: 20061108 |
|
| DD01 | Delivery of document by public notice |
Addressee: Wang Chunguang Document name: Notification of Expiration of Patent Right Duration |