CN202523782U - Battery cell and winding-type battery - Google Patents
Battery cell and winding-type battery Download PDFInfo
- Publication number
- CN202523782U CN202523782U CN2012200309721U CN201220030972U CN202523782U CN 202523782 U CN202523782 U CN 202523782U CN 2012200309721 U CN2012200309721 U CN 2012200309721U CN 201220030972 U CN201220030972 U CN 201220030972U CN 202523782 U CN202523782 U CN 202523782U
- Authority
- CN
- China
- Prior art keywords
- battery
- barrier film
- pole plate
- pocket type
- positive
- 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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- 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
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Abstract
The utility model discloses a battery cell. The battery cell comprises a positive pole plate, a negative pole plate and a membrane for separating the positive pole plate from the negative pole plate, wherein the membrane is in a bag type; the positive pole plate or the negative pole plate is arranged in the bag-type membrane; and the conductive pole lug of the positive pole plate or the negative pole plate extends out of the bag-type membrane. In addition, the utility model also discloses a winding-type battery adopting the battery cell. By using the bag-type membrane, the short circuit rate caused by the contact between the positive pole plate and the negative pole plate of the battery and the shedding of active materials can be reduced; the stability of the battery in use is improved; and the service life of the battery is prolonged.
Description
Technical field
The utility model relates to coiled battery.
Background technology
Battery is more and more important in present productive life, for reduce battery failures, prolong battery useful life require increasingly high.The both positive and negative polarity of battery all is that active material is attached on the conducting matrix grain and makes, and recycles the problem that all can have active material in various degree to come off in the process at battery, and active material comes off and can cause battery in use low pressure even short circuit.Unavoidably can run into high temperature in the battery use; Particularly during high current charge-discharge; When perhaps the residing ambient temperature of battery was too high, the barrier film of battery was heated and generally can shrinks, and can cause the direct contact short circuit of battery plus-negative plate; In addition, battery in manufacturing process because to cause battery short circuit around dislocation also be a main cause of battery short circuit all the time.So battery is when making, barrier film generally can be than more than the wide 3mm of electrode slice, to prevent the contact of battery plus-negative plate pole piece.But even so, can not guarantee the both positive and negative polarity active material is separated fully.As shown in Figure 1; The barrier film 200 of common coiled battery is a strip, and barrier film is folding at fold line A place along its length during coiling, encases an electrode slice 201; Expose the lug 202 on the pole piece, put another one electrode slice (not shown) coiling poling group again.The electrode slice that this barrier film encases is actual to have only three, also has three faces to see from different directions, and the front end surface of pole piece and upper and lower surfaces have barrier film to cover, and the tail end of pole piece and both sides do not have the barrier film parcel.
The utility model content
The main purpose of the utility model is exactly the deficiency to prior art; A kind of electric core and coiled battery are proposed; The barrier film that it adopted can reduce the short circuit ratio that the battery plus-negative plate pole piece contacts and active material comes off and brings, and improves battery stability in use, extending battery life.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of battery battery core comprises positive and negative plate and the barrier film that positive and negative plate is isolated, and said barrier film is a pocket type, and said positive plate or said negative plate are contained in the pocket type barrier film and its conduction lug stretches out outside the pocket type barrier film.
Preferably, the opening of said pocket type barrier film remainder except that supplying said conduction lug extension is sealed.
Preferably, said pocket type barrier film be by a slice barrier film straight forming or be welded by the multi-disc barrier film.
A kind of coiled battery comprises aforementioned any battery battery core.
Said battery can be a nickel-hydrogen chargeable cell.
The utility model beneficial technical effects is:
Utilize " tubular " pocket type barrier film, after an electrode slice threading barrier film, put the another one electrode slice and just can be rolled into battery utmost point group (electric core).Because the pocket type barrier film be a bag shape, except that the porch, all sealing, thus just passable as long as barrier film guarantees electrode slice is packed into, need not be than more than the wide 3mm of electrode slice, so in the enhancing isolation effect, also saved the barrier film consumption.
Because barrier film is a pocket type; Effectively avoided the positive and negative electrode sheet directly to contact; Stopped battery low pressure phenomenon; And the active material that electrode slice comes off in cyclic process is owing to there is barrier film isolated fully, can not touch other electrode slice and becomes the antipole material, thereby increase the cycle life of battery.
The utility model can reduce the come off short circuit ratio that causes and battery of cell active materials and shrink the short circuit ratio that causes owing to receive high temperature diaphragm, improves battery stability in use, prolongs battery useful life.
Description of drawings
The sketch map that positive plate and barrier film were placed when Fig. 1 reeled for common diaphragm;
Fig. 2 be an embodiment of the utility model the pocket type membrane coil around the time positive plate and the barrier film sketch map placed;
Fig. 3 is the battery cycle life curve chart of embodiment and comparative example.
Embodiment
Below combine accompanying drawing that the utility model is further specified through embodiment.
See also Fig. 2; In an embodiment; Battery battery core comprises positive plate 101, negative plate (not shown) and the barrier film 100 that positive and negative plate is isolated; Said barrier film 100 is the pocket type barrier film of sack shape, and said positive plate 101 is contained in the pocket type barrier film 100 and its conduction lug 102 stretches out outside the pocket type barrier film 100.The outline of pocket type barrier film is such as but not limited to being columnar or flat.
In preferred embodiment, the opening of said pocket type barrier film 100 remainder except that supplying said conduction lug extension is sealed.The opening of pocket type barrier film can not seal yet.
In some embodiment, the pocket type barrier film can be by a slice barrier film straight forming when making barrier film.In other embodiment, the pocket type barrier film can be welded by the multi-disc barrier film.
A kind of coiled battery comprises shell and battery battery core, and in various embodiment, it can have aforementioned any battery battery core.This coiled battery is such as but not limited to being nickel-hydrogen chargeable cell.
Following pass test data relatively adopts traditional barrier film (comparative example) and adopts two kinds of nickel-hydrogen chargeable cells of the pocket type barrier film of the utility model embodiment; Capacity all is AA600mAh; Nickel-hydrogen chargeable cell is at the short circuit ratio of each link in two kinds of the track records, and its cycle life relatively.
| ? | Embodiment | Comparative example |
| Barrier film | The pocket type barrier film | Common diaphragm |
Short circuit ratio statistics (making each 500 on two kinds of batteries):
Coiling short circuit: 1 of embodiment short circuit, short circuit ratio 0.2%; 5 of comparative example short circuits, short circuit ratio are 1%;
Seal short circuit: embodiment does not have short circuit, 2 of comparative example short circuits, and short circuit ratio is 0.4%.
High temperature was shelved after March, test battery low pressure ratio: it is 0 that the embodiment cell voltage is lower than 1.2V battery ratio, and it is 5.2 ‰ that the comparative example cell voltage is lower than 1.2V battery ratio.
Life test (5A life-span)
Work step is provided with: 5A is put to 0.9V; Shelve 10Min; 150mA fills 240min; Shelve 10min; From the first step to the four steps circulation, reach 60% of initial capacity up to battery capacity and finish.Acetonideexample cycle life was 380 weeks, and the cycle life of comparative example battery was 240 weeks, life curve such as Fig. 3, the battery of the corresponding the utility model embodiment of the curve above being positioned at.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.
Claims (5)
1. a battery battery core comprises positive and negative plate and the barrier film that positive and negative plate is isolated, and it is characterized in that said barrier film is a pocket type, and said positive plate or said negative plate are contained in the pocket type barrier film and its conduction lug stretches out outside the pocket type barrier film.
2. battery battery core as claimed in claim 1 is characterized in that, the opening of said pocket type barrier film remainder except that supplying said conduction lug extension is sealed.
3. according to claim 1 or claim 2 battery battery core is characterized in that, said pocket type barrier film be by a slice barrier film straight forming or be welded by the multi-disc barrier film.
4. a coiled battery is characterized in that, comprises each described battery battery core like claim 1-3.
5. coiled battery as claimed in claim 4 is characterized in that, said battery is a nickel-hydrogen chargeable cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200309721U CN202523782U (en) | 2012-01-31 | 2012-01-31 | Battery cell and winding-type battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200309721U CN202523782U (en) | 2012-01-31 | 2012-01-31 | Battery cell and winding-type battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202523782U true CN202523782U (en) | 2012-11-07 |
Family
ID=47106713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200309721U Expired - Lifetime CN202523782U (en) | 2012-01-31 | 2012-01-31 | Battery cell and winding-type battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202523782U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356569A (en) * | 2016-09-26 | 2017-01-25 | 惠州市恒泰科技股份有限公司 | Winding type battery and manufacturing method thereof |
| CN112467187A (en) * | 2020-11-10 | 2021-03-09 | 深圳市诚捷智能装备股份有限公司 | Winding battery cell manufacturing method and winding battery cell |
-
2012
- 2012-01-31 CN CN2012200309721U patent/CN202523782U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356569A (en) * | 2016-09-26 | 2017-01-25 | 惠州市恒泰科技股份有限公司 | Winding type battery and manufacturing method thereof |
| CN112467187A (en) * | 2020-11-10 | 2021-03-09 | 深圳市诚捷智能装备股份有限公司 | Winding battery cell manufacturing method and winding battery cell |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |