CN201478380U - Nickel-metal hydride battery pole piece and battery using same - Google Patents
Nickel-metal hydride battery pole piece and battery using same Download PDFInfo
- Publication number
- CN201478380U CN201478380U CN2009201682924U CN200920168292U CN201478380U CN 201478380 U CN201478380 U CN 201478380U CN 2009201682924 U CN2009201682924 U CN 2009201682924U CN 200920168292 U CN200920168292 U CN 200920168292U CN 201478380 U CN201478380 U CN 201478380U
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- CN
- China
- Prior art keywords
- battery
- pole piece
- nickel
- metal hydride
- hydride battery
- 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 - Fee Related
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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
Abstract
The utility model belongs to the technical field of nickel-metal hydride batteries, and provides a nickel-metal hydride battery pole piece and a battery using same. The nickel-metal hydride battery pole piece comprises an active substance layer, wherein a polytetrafluoroethylene film is also evenly cladded on the surface of the active substance layer. According to the nickel-metal hydride battery pole piece and the battery, as polytetrafluoroethylene is a hydrophobic material, and has a mesh structure simultaneously, solid, gas and liquid three-phase interfaces are effectively formed on the surface of the nickel-metal hydride battery pole piece, so as to lead oxygen generated when charging to be timely and effectively compounded at the cathode, thus reducing internal pressure; simultaneously, the polytetrafluoroethylene has an acid and water-resistant adhesive, and the pole piece is relatively soft, thus reducing the probability of the generation of burr when in winding, and effectively avoiding the phenomenon of pole shelling of the battery in the processes of charging and discharging of the battery; and the charge retention ratio of the nickel-metal hydride battery in 28 days reaches above 85%.
Description
Technical field
The utility model relates to Ni-MH battery, relates in particular to a kind of Ni-MH battery pole piece and uses the Ni-MH battery of this kind pole piece.
Background technology
Characteristics such as Ni-MH battery is owing to have a high power capacity, chargeable, environmental protection and being widely used.Be widely used in civilian instruments such as cordless telephone, camera along with Ni-MH battery, requirement to the charged conservation rate of Ni-MH battery is more and more higher, 28 days charged conservation rates of Ni-MH battery are about 60% at present, do not reach the common people's demand far away, and the development nickel-hydrogen low self-discharge battery is imperative.
For slurry technology Ni-MH battery, the both positive and negative polarity pole piece is made up of the active material adding additives, making the finished product sheet is formed by positive pole, negative pole, the direct coiling of barrier film, the battery made of technology thus, anode pole piece is harder, is easy to generate trickle burr in coiling bending process, in charge and discharge process, produce the cobalt dendrite arm on anodal surface easily, the carrying out of while charge and discharge cycles, the easy shedding in anodal lower edge influences the self-discharge of battery performance; Negative terminal surface can not form effective solid, liquid, gas three phase boundary, and in charging process, the anodal oxygen that produces can not be compound on negative pole timely and effectively, causes inner pressure of battery bigger.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of low self-discharge Ni-MH battery pole piece and battery thereof are provided.
For realizing above purpose, the technical scheme that the utility model provides is:
A kind of Ni-MH battery pole piece comprises active material layer, also is coated with poly tetrafluoroethylene on the described active material laminar surface equably.
The thickness of described poly tetrafluoroethylene is 2-10 μ m.
On the other hand, the technical scheme that provides of the utility model is:
A kind of Ni-MH battery comprises positive plate and negative plate, is coated with poly tetrafluoroethylene equably on the active material surface of described positive plate and negative plate.
The thickness of described poly tetrafluoroethylene is 2-10 μ m.
Said pole piece comprises anode pole piece and cathode pole piece in the utility model.
Said low self-discharge Ni-MH battery is meant that 28 days charged conservation rates are about the Ni-MH battery more than 85% in the utility model.
The beneficial effects of the utility model: because polytetrafluoroethylene is hydrophobic substance, have mesh-structuredly simultaneously, effectively form solid, gas, liquid three phase boundary on Ni-MH battery pole piece surface, it is timely and effective compound at negative pole to make charging produce oxygen, presses in reducing; Polytetrafluoroethylene has acidproof water binding agent simultaneously, and pole piece is comparatively soft, reduces the probability that burr produces during coiling, effectively avoids battery electrode shedding phenomenon in charge and discharge process simultaneously; 28 days charged conservation rates of Ni-MH battery reach more than 85%.
Description of drawings
Fig. 1 is the Ni-MH battery pole piece cross sectional representation according to the utility model preferred embodiment.
Embodiment
With reference to figure 1, a kind of Ni-MH battery pole piece comprises attached to negative or positive electrode active material layer 1 on the conducting matrix grain and poly tetrafluoroethylene 2.Poly tetrafluoroethylene 2 is coated on the outer surface of active material layer 1 equably, and the thickness of film is 2-10 μ m.
Above-mentioned battery pole piece, barrier film, electrolyte and electric shell are assembled into Ni-MH battery, detect its 28 days charged conservation rates, all reach more than 85%.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, do not breaking away under the prerequisite of the utility model design, make concrete change or change and all belong to protection range of the present utility model.
Claims (4)
1. a Ni-MH battery pole piece comprises active material layer, it is characterized in that: also be coated with poly tetrafluoroethylene on the described active material laminar surface equably.
2. Ni-MH battery pole piece according to claim 1 is characterized in that: the thickness of described poly tetrafluoroethylene is 2-10 μ m.
3. a Ni-MH battery comprises positive plate and negative plate, it is characterized in that: be coated with poly tetrafluoroethylene equably on the active material surface of described positive plate and negative plate.
4. Ni-MH battery according to claim 3 is characterized in that: the thickness of described poly tetrafluoroethylene is 2-10 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201682924U CN201478380U (en) | 2009-09-04 | 2009-09-04 | Nickel-metal hydride battery pole piece and battery using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201682924U CN201478380U (en) | 2009-09-04 | 2009-09-04 | Nickel-metal hydride battery pole piece and battery using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478380U true CN201478380U (en) | 2010-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201682924U Expired - Fee Related CN201478380U (en) | 2009-09-04 | 2009-09-04 | Nickel-metal hydride battery pole piece and battery using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201478380U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894948A (en) * | 2010-07-15 | 2010-11-24 | 河南省恒明风云电源有限公司 | Method for preparing bag type metal hydride cathode of alkaline storage battery |
| CN104737357B (en) * | 2012-11-28 | 2017-04-19 | 松下知识产权经营株式会社 | Nickel-hydrogen storage battery and battery pack |
| CN108199095A (en) * | 2017-12-29 | 2018-06-22 | 东莞市朗泰通实业有限公司 | A kind of modified form Ni-MH battery |
| CN112002906A (en) * | 2020-07-16 | 2020-11-27 | 瑞海泊有限公司 | Hydrophobic electrode, preparation method thereof and battery |
-
2009
- 2009-09-04 CN CN2009201682924U patent/CN201478380U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894948A (en) * | 2010-07-15 | 2010-11-24 | 河南省恒明风云电源有限公司 | Method for preparing bag type metal hydride cathode of alkaline storage battery |
| CN101894948B (en) * | 2010-07-15 | 2012-12-26 | 河南省恒明风云电源有限公司 | Method for preparing bag type metal hydride cathode of alkaline storage battery |
| CN104737357B (en) * | 2012-11-28 | 2017-04-19 | 松下知识产权经营株式会社 | Nickel-hydrogen storage battery and battery pack |
| CN108199095A (en) * | 2017-12-29 | 2018-06-22 | 东莞市朗泰通实业有限公司 | A kind of modified form Ni-MH battery |
| CN108199095B (en) * | 2017-12-29 | 2020-03-27 | 东莞市朗泰通实业有限公司 | Improved nickel-metal hydride battery |
| CN112002906A (en) * | 2020-07-16 | 2020-11-27 | 瑞海泊有限公司 | Hydrophobic electrode, preparation method thereof and battery |
| WO2022012296A1 (en) * | 2020-07-16 | 2022-01-20 | 瑞海泊有限公司 | Hydrophobic electrode and manufacturing method therefor, and battery |
| CN112002906B (en) * | 2020-07-16 | 2023-07-25 | 瑞海泊有限公司 | Hydrophobic electrode, preparation method thereof and 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20130904 |