CN202772225U - Cathode pole piece of nickel-metal hydride battery - Google Patents
Cathode pole piece of nickel-metal hydride battery Download PDFInfo
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- CN202772225U CN202772225U CN2012203815674U CN201220381567U CN202772225U CN 202772225 U CN202772225 U CN 202772225U CN 2012203815674 U CN2012203815674 U CN 2012203815674U CN 201220381567 U CN201220381567 U CN 201220381567U CN 202772225 U CN202772225 U CN 202772225U
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- cathode
- nickel
- current collector
- negative
- pole piece
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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 cathode pole piece of a nickel-metal hydride battery. The cathode pole piece comprises cathode active substances, a cathode current collector and cathode pole lugs and is characterized in that the cathode active substances are coated with the porous nickel-aluminum alloy foil cathode current collector with the thickness of 10-50 micrometers and zigzag or triangular wedged grooves on the surface and one to five cathode pole lugs with the thickness of 15-100 micrometers, cathode active substance slurry is coated on the cathode current collector in a single-face or double-face manner to form cathode active substance coatings, and the pole lugs are welded at reserved vacant positions of the nickel coil cathode current collector through ultrasonic waves or lasers to be connected with the current collector. The cathode manufactured by the cathode pole piece of the nickel-metal hydride battery is simple in structure, high in circulation capacity, long in service life and storage life, good in large-current discharging effect and high in safety performance, and the charging and discharging circulation service life under the condition of 5C and higher circulation percentage exceeds 600 times.
Description
Technical field
The utility model relates to technical field of chemical power, is specifically related to a kind of nickel-hydrogen battery negative pole pole piece.This nickel-hydrogen battery negative pole pole piece can be used for making the Ni-MH battery of various models, is specially adapted to make Ni-MH power cell.
Background technology
At present, the existing used cathode pole piece of battery industry manufacturing Ni-MH battery mainly is made of three parts such as negative electrode active material coating, nickel plating stainless (steel) wire negative current collector, nickel strap negative lug.The Ni-MH battery of the cathode pole piece manufacturing of this structure exists significant not enough: be common metal hydrogen alloy owing to what use 1), the electrode plates of making is very thin, be easy to fracture, and do not mate with relatively thick anode pole piece structure, affect battery capacity, affect the normal operation of battery, reduce the useful life of battery, even may be owing to the short circuit security incident such as blast; 2) the nickel-hydrogen battery negative pole pole piece of prior art manufacturing, specific capacity is large and substantially exceed the anode pole piece specific capacity, and therefore, in the situation that the overall dimension coupling, the negative electrode active material waste is serious, invisible raising and the manufacturing cost of having wasted battery; 3) because negative electrode active material mostly is greatly simple metal hydrogen alloy, its self discharge is serious, has a strong impact on capacity and the service life cycle of Ni-MH battery; 4) because negative pole self discharge or to separate out hydrogen comparatively serious causes the battery bulging, in the discharge capacity that affects Ni-MH battery and in useful life, also there is great potential safety hazard, as causes battery explosion, fire etc.
The utility model content
Produce the Ni-MH battery above shortcomings in order to solve prior art, the purpose of this utility model is to be to provide a kind of nickel-hydrogen battery negative pole pole piece, and it is simple in structure, circulation volume is high, useful life and storage life are long, and heavy-current discharge is effective, and security performance is high.Can be used for making the Ni-MH battery of various models, especially be fit to make the Ni-MH power cell of various models.The Ni-MH battery that a kind of nickel-hydrogen battery negative pole pole piece of the utility model technology manufacturing is produced, under various service conditions, opening circuit or short circuit can not appear in battery, can work, do not exist service life cycle and the storage life of obvious self discharge or flatulence (negative pole liberation of hydrogen), battery long, usually do not have short circuit and the security incident such as blast.
The utility model is achieved by following technical proposals:
A kind of nickel-hydrogen battery negative pole pole piece, comprise negative electrode active material, negative current collector, three parts of negative lug form, it is characterized in that: negative electrode active material is that mass ratio is followed successively by the nano metal hydrogen alloy that 3:1:1 mixes, carbon nano-tube, nano-graphite active material admixture coating, the negative electrode active material coating layer thickness is that the surface of 10～50 μ m has zigzag or triangle wedge-shaped impression, negative current collector made by the nickel alumin(i)um alloy paper tinsel of many micropores (aperture is about 0.5～25 μ m and does not wait) and thickness is three parts of 1～5 negative lug of 15～100 μ m, three's annexation is: negative electrode active material is made slurry, be coated on the negative current collector with single or double, drying, be compressed on the negative current collector and form the negative electrode active material coating and adhere on the collector, lug is connected with collector in the reservation blank space of nickel foil negative current collector through ultrasonic wave or laser welding.
A kind of nickel-hydrogen battery negative pole pole piece, it is characterized in that: the negative electrode active material coating is that mass ratio is followed successively by the nano metal hydrogen alloy that 3:1:1 mixes, carbon nano-tube, nano-graphite active material admixture and account for nano metal hydrogen alloy, carbon nano-tube, the nano-graphite mixture quality is than 1.5～3% PTFE and account for nano metal hydrogen alloy, carbon nano-tube, the nano-graphite mixture quality is made into slurry than 15～30% distilled water, be coated on the negative current collector through starching, drying, compacting, form the negative electrode active material coating at negative current collector, through the operation such as cutting, again in the reservation blank space of negative current collector with ultrasonic wave or 1～5 negative lug of laser welding.
Further, the utility model comprises following content:
A kind of nickel-hydrogen battery negative pole pole piece, described a kind of nickel-hydrogen battery negative pole pole piece by: part such as three of negative electrode active material coating, negative current collector, lugs etc. forms.
A kind of nickel-hydrogen battery negative pole pole piece is characterized in that: the negative electrode active material coating layer thickness is that the surface of 10～50 μ m has in a zigzag or the nickel alumin(i)um alloy paper tinsel triangle wedge-shaped impression, many micropores (aperture is about 0.5～25 μ m and does not wait) is made the nickel foil negative current collector and thickness is three part compositions of 1～5 negative lug of 15～100 μ m; Three's annexation is: negative electrode active material is with nickel-hydrogen battery negative pole sizing technique commonly used, adhere on the collector in forming the negative electrode active material coating on the negative current collector through the operation single face such as slurrying, starching, drying or double-coated, negative lug is connected (seeing accompanying drawing 1～6 for details) through ultrasonic wave or laser welding with negative current collector in the reservation of nickel alumin(i)um alloy paper tinsel negative current collector (being used for the spot welding lug) blank space.
Described a kind of nickel-hydrogen battery negative pole pole piece, it is characterized in that: the negative electrode active material coating is for waiting mass ratio to be followed successively by the nano metal hydrogen alloy that 3:1:1 mixes, carbon nano-tube, nano-graphite active material admixture and account for nano metal hydrogen alloy, carbon nano-tube, the nano-graphite mixture quality is than 1.5～3% PTFE and account for nano metal hydrogen alloy, carbon nano-tube, the nano-graphite mixture quality is made into slurry than 15～30% distilled water, be coated on the negative current collector through starching, drying, compacting, so that the negative electrode active material slurry forms the negative electrode active material coating at collector, through the operation such as cutting, again in the reservation blank space of negative current collector through ultrasonic wave or 1～5 negative lug of laser welding.
Adopt the technical solution of the utility model, can obtain following obvious effect: Ni-MH battery and the Ni-MH power cell of using a kind of nickel-hydrogen battery negative pole pole piece manufacturing of the utility model technology production, owing to having used the surface to have the nickel alumin(i)um alloy paper tinsel of the porous of zigzag groove to make nickel foil negative current collector negative pole, so that the effective contact area between negative pole utmost point coating layer of active substance and the negative current collector significantly increases, adhesion property between negative electrode active material and the negative current collector improves greatly, thereby improved effective utilization of negative electrode active material, reduced negative electrode active material coming off in use, the high current charge-discharge effect of electrode is significantly improved, so that have preferably high rate during charging-discharging with the battery of this negative pole manufacturing, the service life cycle of growing; In addition, owing to the negative electrode active material coating is that mass ratio is the nano metal hydrogen alloy that 3:1:1 mixes, carbon nano-tube, the nano-graphite active material admixture, carbon nano-tube and nano-graphite all have good embedding proton or the performance of hydrogen atom, so that the self discharge of hydrogen negative pole and hydrogen evolution phenomenon are significantly suppressed, in the electric conductivity that does not affect negative electrode, so that the capacity of negative electrode, service life cycle and storage life significant prolongation, charge and discharge cycles useful life (discharge capacity is not less than the charge and discharge cycles number of times of design capacity 70%) surpasses 600 times under 5C and above multiplying power condition, is up to more than 700 times and (sees accompanying drawing 7～accompanying drawing 8 for details).
The utility model is specially adapted to make Ni-MH power cell, also is applicable to the cylinder-type nickel-metal hydride battery of all kinds, various models.
Description of drawings
Fig. 1 is a kind of nickel-hydrogen battery negative pole collector generalized section
Fig. 2 is a kind of Ni-MH battery monopole ear coated on both sides cathode pole piece schematic perspective view
Fig. 3 is a kind of Ni-MH battery Double-pole lug coated on both sides cathode pole piece schematic side view
Fig. 4 is a kind of Ni-MH battery three lug coated on both sides cathode pole piece schematic side view
Fig. 5 is a kind of Ni-MH battery four lug single face coating cathode pole piece schematic side view
Fig. 6 is a kind of schematic perspective view of Ni-MH battery five lug coated on both sides cathode pole pieces
Fig. 7 is the charging and discharging curve of the ni-mh experimental cell of the utility model cathode pole piece manufacturing
Fig. 8 is the charge and discharge cycles figure of the ni-mh experimental cell of the utility model cathode pole piece manufacturing
Wherein: 1-negative electrode active material coating, 2-negative current collector, 2a-collection liquid surface groove, 2b-reserve blank space, 3-negative lug
Embodiment
Below in conjunction with Fig. 1～Fig. 5 and specific embodiment, the utility model is described in further detail.
Referring to accompanying drawing 1～Fig. 5, a kind of nickel-hydrogen battery negative pole pole piece of the utility model, described a kind of nickel-hydrogen battery negative pole pole piece comprise negative electrode active material coating 1, negative current collector 2, form every three parts such as negative lug 3.
A kind of nickel-hydrogen battery negative pole pole piece is characterized in that: negative electrode active material coating 1 thickness be 10～50 μ m, the surface by in a zigzag or triangle wedge-shaped impression nickel alumin(i)um alloy paper tinsel 2a, porous to make nickel foil negative current collector 2 and thickness be that 3 three parts of 1～5 negative lug of 15～100 μ m form; Three's annexation is: negative electrode active material is with nickel-hydrogen battery negative pole sizing technique commonly used, on negative current collector 2, form negative electrode active material coating 1 through the operation single faces such as slurrying, starching, drying or double-coated and adhere on the collector, negative lug 3 through ultrasonic wave or laser welding in the reservation blank space 2b of nickel alumin(i)um alloy paper tinsel negative current collector 2 and be connected (seeing accompanying drawing 2～6 for details) with negative current collector.
Described a kind of nickel-hydrogen battery negative pole pole piece, it is characterized in that: the negative electrode active material coating is for waiting mass ratio to be followed successively by the nano metal hydrogen alloy that 3:1:1 mixes, carbon nano-tube, nano-graphite active material admixture and account for nano metal hydrogen alloy, carbon nano-tube, the nano-graphite mixture quality is than 1.5～3% PTFE and account for nano metal hydrogen alloy, carbon nano-tube, the nano-graphite mixture quality is made into slurry than 15～20% distilled water, be coated on the negative current collector 2 through starching, drying, compacting, so that forming negative electrode active material coating 1 at negative current collector, the negative electrode active material slurry adheres on the collector, through the operation such as cutting, again at the reservation of negative current collector 2 (being used for the spot welding lug) blank space 2b through ultrasonic wave or laser welding negative lug 3.(seeing accompanying drawing 2～accompanying drawing 6 for details).
With a kind of nickel-hydrogen battery negative pole lithium-ion-power cell that pole piece is assembled into of the utility model, under 5C and the above high power charging-discharging condition of 5C, the cycle life of battery (discharge capacity less than design capacity 70% time charge and discharge cycles number of times) surpasses 600 times, is up to more than 700 times and (sees accompanying drawing 7～accompanying drawing 8 for details).
Yet the above is preferred embodiment of the present utility model only, is not therefore to limit to protection range of the present utility model, and all equivalences of using the utility model description to carry out change, and all are included in the scope of the present utility model.
Claims (1)
1. nickel-hydrogen battery negative pole pole piece, comprise negative electrode active material (1), negative current collector (2), negative lug (3), it is characterized in that: negative electrode active material coating (1) thickness is that the surface of 10～50 μ m has in a zigzag or triangle wedge-shaped impression nickel alumin(i)um alloy paper tinsel (2a), porous negative current collector (2) and thickness are 1～5 negative lug (3) composition of 15～100 μ m; The negative electrode active material slurry is coated on the upper negative electrode active material coating (1) that forms of negative current collector (2) with single or double and adheres on the collector, and lug (3) is connected with collector in the reservation blank space (2b) of nickel foil negative current collector (2) through ultrasonic wave or laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203815674U CN202772225U (en) | 2012-08-01 | 2012-08-01 | Cathode pole piece of nickel-metal hydride battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203815674U CN202772225U (en) | 2012-08-01 | 2012-08-01 | Cathode pole piece of nickel-metal hydride battery |
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| Publication Number | Publication Date |
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| CN202772225U true CN202772225U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012203815674U Expired - Fee Related CN202772225U (en) | 2012-08-01 | 2012-08-01 | Cathode pole piece of nickel-metal hydride battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794759A (en) * | 2014-01-27 | 2014-05-14 | 中南大学 | Treatment way of negative pole piece of nickel-metal hydride battery |
| CN111509196A (en) * | 2020-04-20 | 2020-08-07 | 深圳市量能科技有限公司 | Novel nickel-metal hydride battery negative plate and manufacturing method thereof |
-
2012
- 2012-08-01 CN CN2012203815674U patent/CN202772225U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794759A (en) * | 2014-01-27 | 2014-05-14 | 中南大学 | Treatment way of negative pole piece of nickel-metal hydride battery |
| CN111509196A (en) * | 2020-04-20 | 2020-08-07 | 深圳市量能科技有限公司 | Novel nickel-metal hydride battery negative plate and manufacturing method thereof |
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| 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: 20130306 Termination date: 20130801 |