CN202172103U - Nickel hydroxide anode pole piece of large current nickel-metal hydride battery - Google Patents
Nickel hydroxide anode pole piece of large current nickel-metal hydride battery Download PDFInfo
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- CN202172103U CN202172103U CN2011202559869U CN201120255986U CN202172103U CN 202172103 U CN202172103 U CN 202172103U CN 2011202559869 U CN2011202559869 U CN 2011202559869U CN 201120255986 U CN201120255986 U CN 201120255986U CN 202172103 U CN202172103 U CN 202172103U
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- nickel
- pole piece
- collector
- nickel hydroxide
- battery
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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 discloses a nickel hydroxide anode pole piece of a large current nickel-metal hydride battery, which is composed of an anode active material coating, a current collector and a lead. The anode active material coating is coated on the current collector, a current collector round micro-hole is arranged on the current collector, and the lead is arranged at a reserved blank position of the current collector in spot welding mode. The current collector is manufactured by aluminium foil with the round micro-hole, nickel foil or nickel plated stainless steel, and the lead is manufactured by metallic nickel belts or nickel plated steel belts. The nickel hydroxide anode pole piece is simple in structure and convenient to operate. The nickel-metal hydride battery manufactured by the anode pole piece is high in capacity and multiplying power, namely quick charging and discharging effect of large current is good. The nickel hydroxide anode pole piece can effectively improve discharging capacity of the large current nickel-metal hydride battery, improves large current discharging effect of the nickel-metal hydride battery, and effectively prolongs service life of the nickel-metal hydride battery.
Description
Technical field
It is that battery is made the field that the utility model relates to chemical power source, more specifically relates to the special-purpose nickel hydroxide positive plate pole piece of a kind of big electric current Ni-MH battery, be applicable to make various models once, the big electric current Ni-MH battery of secondary.
Background technology
The anode of nickel-metal hydride battery pole piece of the industrial various models of current battery; The plus plate current-collecting body that adopts is nickel foam mostly; Used positive active material also all is to be that β-type, pattern are spherical nickel hydroxide, graphite agent, CMC blowing agent and other additive mixing manufacture form slurry by crystal structure; Slurry is coated on the nickel foam collector through sizing technique, and the lug of burn-oning again makes big electric current positive plate for nickel-hydrogen cell.Because the plus plate current-collecting body that uses is a nickel foam, production processes such as section in the anodal production process, burst and coiling very easily produce " burr ", promptly are exposed to the nickel wire that the pole piece edge is not encased by active material.The existence of burr can make inside battery be easy to generate minute short circuit even diaphragm and produce short circuit, thereby causes that self-discharge of battery, capacity reduce and cycle life shortens even battery short circuit and scrapping.In addition; Because positive active material all is that particle diameter is micron-sized ball-shape nickel hydroxide; Its slurry can not adopt lithium ion cell positive to make used, so-called " coating " technology; Electrode capacity and battery capacity are restricted; Simultaneously, shortcoming such as with the ball-shape nickel hydroxide be that the battery of positive active material production exists that specific capacity is low, heavy-current discharge weak effect and cycle life are short is difficult to satisfy the requirement to the big electric current of electrokinetic cell, fast charging and discharging such as high-power electric instrument, electric powered motor.
Summary of the invention
In order to solve the above-mentioned subject matter that exists in the prior art, the purpose of the utility model is to be to provide a kind of big electric current Ni-MH battery special-purpose nickel hydroxide positive plate pole piece.Simple in structure; Easy to operate; High, the high magnification of the Ni-MH battery capacity made from described anode pole piece; Be the effective of big electric current fast charging and discharging, can improve more effectively big electric current Ni-MH battery discharge capacity, improved the heavy-current discharge effect of Ni-MH battery, and prolonged Ni-MH battery useful life effectively.
In order to realize above-mentioned purpose, the utility model adopts with following technical proposals:
The special-purpose nickel hydroxide positive plate pole piece of a kind of big electric current Ni-MH battery is by the positive active material coating, constitute with three parts such as the collector of circular micropore and lugs.
The annexation of this three part is: the positive active material coating is coated on the collector; Have circular micropore on the collector; Lug (monopole ear or multipole ear are selected 1～4 lug according to the size of pole piece or the size of capacity) is welded to the reservation blank space of collector through spot-welding technology.
Described collector is that aluminium foil, nickel foil or the nickel plating stainless steel foil of the circular micropore of 1～20 μ m is made by the band radius of thickness 0.05～0.1mm.
Described positive active material slurry is prepared by following steps: the first step: with nano-sized nickel hydroxide with account for CNT that equal proportion mixes and nano cobaltous oxide additive mixed by 100:5 ~ 1, ball milling 0.5～3 hour mixes; Second step: mixture that the first step is obtained and the acetylene black conductive agent of particle diameter 10～50nm are that the ratio ball mill mixing of 100:40～30 is even according to mass ratio; The 3rd step with second mixture and the polytetrafluoroethylene binding agent that obtain of step, was that the mixed of 1:0.01～0.03 is even according to mass ratio; The 4th step was 5～25% sodium carboxymethyl cellulose solution with the 3rd mixture that obtain of step and quality than concentration, was that the mixed of 1:0.5～0.10 is even according to mass ratio; In the 5th step, in the 4th mixture that obtain of step, add the redistilled water that accounts for its mass percent 30～45% or deionized water and stirring and mix and obtain the positive active material slurry.
The positive active material slurry of above-mentioned preparation is coated on the surface of collector through painting process; Through 80～95 ℃ of temperature oven dry, to roll extrusion system thickness is 0.1～1.00mm; Promptly on collector, form the positive active material coating, warp section again, cutting are of a size of the pole piece of 300～1200 * 25.0～200mm, the reservation blank parts of lug on the collector of pole piece that spot welding length is 25.0～350mm promptly gets big electric current anode of nickel-metal hydride battery pole piece.Described lug is that metal nickel strap or the nickel plated steel strip of 0.05～0.5mm is made by thickness.
Adopt the technical scheme of the utility model, can obtain following significantly beneficial effect:
The battery that the big electric current Ni-MH battery nickel hydroxide positive plate pole piece of employing the utility model is produced; Owing to adopted aluminium foil, nickel foil or the nickel plating stainless steel foil of the circular micropore of novel band; Can not produce " burr ", eliminate the phenomenon of micro-short circuit, diaphragm short circuit, that can improve positive active material effectively attaches the material amount; Active material combines more firm with collector; The adhesive force of enhanced activity material on collector has not only effectively improved the specific discharge capacity and the capacity of the Ni-MH battery of manufacturing, and has improved greatly the life-span that recycles of battery.Used simultaneously have alpha-type crystal structure, specific discharge capacity is higher, electric conductivity is good nano-sized nickel hydroxide is as positive active material; Thereby improve the specific discharge capacity and the heavy-current discharge effect of Ni-MH battery more effectively; Discharge and recharge under the condition at 10～60C of high magnification and ultra-high magnifications; The highest specific discharge capacity of nickel electrode nickel hydroxide active material is all above 260mAh/g, and the discharge curve platform has higher discharge voltage; Simultaneously; Owing to added a certain proportion of acetylene black or active carbon conductive agent in the positive active material; Increased the good nano cobaltous oxide of electric conductivity; Thereby further strengthen and improved the heavy-current discharge efficient of Ni-MH battery; Because positive plate for nickel-hydrogen cell that " coating " technology of having used the alpha-type crystal structure Al doped nano nickel hydroxide of height ratio capacity, high conduction performance simultaneously and having adopted lithium ion battery to make is made, make manufacturing Ni-MH battery recycle the life-span significant prolongation, the electrode pad set of manufacturing is dressed up big electric current Ni-MH battery; Under 10～60C high power charging-discharging condition, the cycle life of battery (discharge capacity less than design capacity 65% time charge and discharge cycles number of times) is all above 600 times.
The utility model is applicable to cylindrical, the square Ni-MH battery and the Ni-H 2 power type battery of all kinds, various models.
Description of drawings
Fig. 1 is a kind of plan view from above of big electric current Ni-MH battery 4 lug nickel hydroxide positive plate pole pieces;
Fig. 2 is the end view of the two coating 3 lug nickel hydroxide positive plate pole pieces of a kind of big electric current Ni-MH battery;
Fig. 3 is a kind of end view of big electric current Ni-MH battery coated on both sides monopole ear nickel hydroxide positive plate pole piece;
The end view of a kind of big electric current Ni-MH battery single face coating monopole ear nickel hydroxide positive plate pole piece of Fig. 4;
The end view of the bipolar ear nickel hydroxide positive plate of a kind of big electric current Ni-MH battery single face coating of Fig. 5 pole piece.
Wherein:
1-positive active material coating; The 2-collector; The circular micropore of 2a-collector; The 3-lug; The 3a-spot welding point; 4-reserves blank space.
Embodiment
Embodiment1:
Below in conjunction with accompanying drawing and concrete embodiment, the utility model is done further to describe in detail.
Can know according to Fig. 1 and Fig. 2; The special-purpose nickel hydroxide positive plate pole piece of a kind of big electric current Ni-MH battery; The positive active material slurry that is made into by materials such as nano-sized nickel hydroxide, additive, conductive agent, binding agent and solvents after painting process is coated on collection liquid surface, dry and positive active material coating 1, constitute with collector 2 and the lug 3 of circular micropore 2a, be reserved with the reservation blank 4 of spot welding lug 3 in the position of end of collector 2 and design.Described lug 3 is 1-4.
The annexation of the special-purpose nickel hydroxide positive plate pole piece of a kind of big electric current Ni-MH battery various piece is: positive active material coating 1 is coated on the collector 2; Have the circular micropore 2a of collector on the collector 2; Lug 3 (monopole ear or multipole ear are selected 1～5 lug according to the size of pole piece or the size of capacity) passes through spot-welding technology spot welding point 3a in the reservation blank space 4 of collector 2.
Described collector 2 is processed by the aluminium foil, nickel foil or the nickel plating stainless steel foil that have the circular micropore 2a of collector.
Described according to the size of pole piece or 1～5 lug 3 of size selection of capacity.
Described lug 3 is processed by metal nickel strap or nickel plated steel strip.
The radius of the circular micropore 2a of described collector is 1～20 μ m.
The preparing of positive active material slurry that is used for described positive active material coating 1: the first step by following steps: with nano-sized nickel hydroxide with account for CNT that equal proportion mixes and nano cobaltous oxide additive mixed by 100:5 ~ 1; Ball milling 0.5～3 hour mixes; Second step: mixture that the first step is obtained and the acetylene black conductive agent of particle diameter 10～50nm are that the ratio ball mill mixing of 100:40～30 is even according to mass ratio; The 3rd step with second mixture and the polytetrafluoroethylene binding agent that obtain of step, was that the mixed of 1:0.01～0.03 is even according to mass ratio; The 4th step was 5～25% sodium carboxymethyl cellulose solution with the 3rd mixture that obtain of step and quality than concentration, was that the mixed of 1:0.5～0.10 is even according to mass ratio; In the 5th step, in the 4th mixture that obtain of step, add the redistilled water that accounts for its mass percent 30～45% or deionized water and stirring and mix and obtain the positive active material slurry.
Is that 0.1mm band radius be aluminium foil, nickel foil or the nickel plating stainless steel foil collector 2 of the circular micropore 2a of 10 μ ms on (accompanying drawing 3) through the painting process double-coated in thickness with the positive active material slurry of above-mentioned preparation; Through 95 ℃ of temperature oven dry, to roll extrusion system thickness is 0.25mm; Promptly on collector 2, form positive active material coating 1, pole piece (accompanying drawing 1), the spot welding length that is of a size of 750 * 65mm through section, cutting again is 80,70, three lugs 3 of 65mm promptly get big electric current Ni-MH battery special use nickel hydroxide positive plate pole piece (accompanying drawing 2) in the reservation blank 4 of collector 2.Described lug 3 is by metal nickel strap or nickel plated steel strip be made (accompanying drawing 3, accompanying drawing 4, accompanying drawing 5); Be assembled into big electric current Ni-MH battery, under 60C high power charging-discharging condition, the cycle life of battery (discharge capacity less than design capacity 65% time charge and discharge cycles number of times) is above 600 times.
Yet therefore the preferred embodiment that the above is merely the utility model is not and the protection range of limitation the utility model that the equivalence that all utilization the utility model description are carried out changes, and all is included in the scope of the utility model.
Claims (5)
1. the special-purpose nickel hydroxide positive plate pole piece of one kind big electric current Ni-MH battery, it is made up of positive active material coating (1), collector (2) and lug (3); It is characterized in that: positive active material coating (1) is coated on the collector (2), has the circular micropore (2a) of collector on the collector (2), and lug (3) passes through spot welding point (3a) in the reservation blank space (4) of collector (2).
2. the special-purpose nickel hydroxide positive plate pole piece of a kind of big electric current Ni-MH battery according to claim 1, it is characterized in that: described collector (2) is processed by the aluminium foil, nickel foil or the nickel plating stainless steel foil that have the circular micropore of collector (2a).
3. the special-purpose nickel hydroxide positive plate pole piece of a kind of big electric current Ni-MH battery according to claim 1, it is characterized in that: described lug (3) is 1-5.
4. the special-purpose nickel hydroxide positive plate pole piece of a kind of big electric current Ni-MH battery according to claim 1, it is characterized in that: described lug (3) is processed by metal nickel strap or nickel plated steel strip.
5. the special-purpose nickel hydroxide positive plate pole piece of a kind of big electric current Ni-MH battery according to claim 2, it is characterized in that: the radius of the circular micropore of described collector (2a) is 1～20 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202559869U CN202172103U (en) | 2011-07-19 | 2011-07-19 | Nickel hydroxide anode pole piece of large current nickel-metal hydride battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202559869U CN202172103U (en) | 2011-07-19 | 2011-07-19 | Nickel hydroxide anode pole piece of large current nickel-metal hydride battery |
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| Publication Number | Publication Date |
|---|---|
| CN202172103U true CN202172103U (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202559869U Expired - Fee Related CN202172103U (en) | 2011-07-19 | 2011-07-19 | Nickel hydroxide anode pole piece of large current nickel-metal hydride battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105122504A (en) * | 2012-12-12 | 2015-12-02 | 瓦尔达微电池有限责任公司 | Composite material, method for the production thereof, system produced therefrom and application of same |
| CN111710925A (en) * | 2020-06-10 | 2020-09-25 | 包头昊明稀土新电源科技有限公司 | Preparation method of water-based battery cell |
| WO2023019741A1 (en) * | 2021-08-19 | 2023-02-23 | 深圳市西盟特电子有限公司 | Current collector preparation method and pole piece |
-
2011
- 2011-07-19 CN CN2011202559869U patent/CN202172103U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105122504A (en) * | 2012-12-12 | 2015-12-02 | 瓦尔达微电池有限责任公司 | Composite material, method for the production thereof, system produced therefrom and application of same |
| CN111710925A (en) * | 2020-06-10 | 2020-09-25 | 包头昊明稀土新电源科技有限公司 | Preparation method of water-based battery cell |
| CN111710925B (en) * | 2020-06-10 | 2022-08-30 | 包头昊明稀土新电源科技有限公司 | Preparation method of water-based battery cell |
| WO2023019741A1 (en) * | 2021-08-19 | 2023-02-23 | 深圳市西盟特电子有限公司 | Current collector preparation method and pole piece |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20190719 |