CN104218264A - Nickel-hydrogen battery and manufacturing method thereof - Google Patents
Nickel-hydrogen battery and manufacturing method thereof Download PDFInfo
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- CN104218264A CN104218264A CN201410096465.1A CN201410096465A CN104218264A CN 104218264 A CN104218264 A CN 104218264A CN 201410096465 A CN201410096465 A CN 201410096465A CN 104218264 A CN104218264 A CN 104218264A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/24—Alkaline accumulators
- H01M10/28—Construction or manufacture
- H01M10/286—Cells or batteries with wound or folded electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/24—Alkaline accumulators
- H01M10/30—Nickel accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
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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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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a manufacturing method of a nickel-hydrogen battery. The manufacturing method comprises a positive plate manufacturing process, a negative plate manufacturing process, a rolling process, a placement process, an electrolyte injection process and a seal process. A diaphragm is arranged between a positive plate and a negative plate. A turnup edge of the positive plate stretches out of the upper end of the diaphragm and a raised part of a negative plate stretches out of the lower end of the diaphragm so that the plates are rolled together to form a cell. The upper end of the cell is connected to a battery cap by a current collector disc. The nickel-hydrogen battery comprises the positive plate, the negative plate, the diaphragm sandwiched between the positive plate and the negative plate, the battery cap and a battery case. The turnup edge of the positive plate stretches out of the upper end of the diaphragm and is bent by pressing to reach to the upper end surface of the cell. The upper end of the cell is electrically connected to the battery cap by the current collector disc. The manufacturing method is convenient for operation and batch production. The nickel-hydrogen battery has high charging efficiency, good heavy current discharge performances and excellent dynamic performances.
Description
Technical field
The invention belongs to energy-storage battery field, more specifically, relate to a kind of Ni-MH battery and preparation method thereof.
Background technology
Along with the high speed development of electronic product, portable electronic mobile device is widely used.With the popularization of electronic mobile device, the demand of secondary cell that is low to the environmental pollution used in it, that can repeatedly recycle is also increasing.This type secondary cell common in daily life is exactly Ni-MH battery.Because Ni-MH battery has the features such as environmental protection, charging and discharging currents is large, fail safe is good, in recent years the R and D of Ni-MH battery always are to the research emphasis in energy-storage battery field.But existing Ni-MH battery, the electric current of positive pole is transmitted by lug, and negative pole directly conducts electricity with contacting bottom battery case, and such structure result in the internal resistance of battery comparatively greatly, hinders the raising of high-rate battery discharge performance.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of discharge platform, the Ni-MH battery strengthening the application to power direction and preparation method thereof that improve Ni-MH battery heavy-current discharge performance, improve battery.
The technical scheme that the present invention adopts for its technical problem of solution is: according to an aspect of the present invention, provides a kind of manufacture method of Ni-MH battery, wherein, said method comprising the steps of:
Positive plate making step: be coated with positive electrode on positive-pole base material, and the Laos's edge not being coated with positive electrode is formed in one end of described positive-pole base material;
Negative plate making step: be coated with negative material on base material of cathode, and the protuberance forming coating negative material in one end of described base material of cathode;
Roll step: be placed on by barrier film between the described positive plate of making and described negative plate, and make Laos's edge of described positive plate protrude the upper end of described barrier film, the protuberance of described negative plate protrudes the lower end of described barrier film, rolls into battery core together;
It is fixing that described battery core rolls the sizing of laggard row, then by Laos's edge backfin of described positive plate to the upper surface of described battery core;
Place step: described battery core is put into battery case; The upper end of described battery core is connected with described battery cap by a current collecting plates;
Place insulating ferrule between described current collecting plates and described battery case, insulate to make described current collecting plates and described battery case;
Electrolyte implantation step: inject electrolyte in described battery case;
Sealing step: seal described battery case by described battery cap, obtained described Ni-MH battery.
In the manufacture method of above-mentioned Ni-MH battery, described placement step is further comprising the steps of:
Bottom cushioning Foamed Nickel in described battery case, carries out conduction by described Foamed Nickel with the bottom of described battery case by the protuberance of the negative plate of described battery core and is connected;
The spider of described current collecting plates and the stubborn edge on the upper surface of described battery core are carried out spot welding firmly to conduct electricity and be connected, the lug of described current collecting plates and described battery cap are carried out spot welding and firmly conduct electricity and be connected.
In the manufacture method of above-mentioned Ni-MH battery, described positive pole making step comprises following sub-step:
A1: prepared by positive electrode: positive electrode active materials, additive are mixed with binding agent, obtained positive electrode;
A2: prepared by positive-pole base material: suppress one piece of cropped area by the middle of monoblock positive-pole base material, this reserved cropped area is not coated with positive electrode;
A3: positive electrode coating, compressing tablet: positive electrode obtained in step a1 is uniformly coated on the described positive-pole base material except described cropped area; And compacting is coated with the described positive-pole base material of positive electrode;
A4: positive plate cuts: from the mid portion of reserved cropped area, the monoblock positive-pole base material suppressed is divided into two, thus one end of positive plate is all formed with described Laos edge described in separate two;
In described step a1, described positive electrode active materials is for covering the sub-nickel of cobalt, and described additive is oxide or the hydroxide of calcium constituent and yttrium, and described binding agent is polytetrafluoroethylene;
In described step a1, the parts by weight of described positive electrode active materials, additive and binding agent are respectively 80 ~ 98,1 ~ 5 and 2 ~ 4.
In the manufacture method of above-mentioned Ni-MH battery, described negative pole making step comprises following sub-step:
B1: negative material is coated with: hydrogen storing alloy powder and binding agent are uniformly coated on described base material of cathode;
B2: negative pole compressing tablet: the described base material of cathode being coated with hydrogen storing alloy powder and binding agent in pressing step b1, obtained negative plate.
In the manufacture method of above-mentioned Ni-MH battery, described electrolyte implantation step comprises following sub-step:
C1: electrolyte quota: alkaline electrolyte is dissolved in solvent, obtained electrolyte;
C2: electrolyte injects: the electrolyte that step c1 is obtained injects in described battery case;
In described step c1, described alkaline electrolyte is the mixture of NaOH, potassium hydroxide and monohydrate lithium hydroxide; Described solvent is distilled water or membrane filtration pure water;
In described step c2, the concentration injecting the described electrolyte in described battery case is 8.4 ~ 9.0mol/L.
According to a further aspect in the invention, provide the Ni-MH battery that a kind of manufacture method by Ni-MH battery of the present invention is obtained,
Described Ni-MH battery comprises positive plate, negative plate, is located in barrier film, battery cap and battery case between positive plate and negative plate; Described positive plate, negative plate and membrane coil make battery core, and described battery core is arranged in described battery case;
Described positive plate comprises positive-pole base material, and described positive-pole base material comprises the positive plate main body being coated with positive electrode and the Laos's edge not being coated with positive electrode formed in one end of described positive plate main body;
Described negative plate comprises base material of cathode, and described base material of cathode comprises the negative plate main body being coated with negative material and the protuberance being coated with negative material in one end of described negative plate main body formation;
Laos's edge of described positive plate protrudes the upper end of described barrier film, and the protuberance of described negative plate protrudes the lower end of described barrier film; The edge backfin of described Laos is to the upper surface of described battery core;
Described Ni-MH battery also comprises current collecting plates; The upper end of described battery core is conducted electricity with described battery cap by described current collecting plates and is connected; Insulating ferrule is provided with between described current collecting plates and described battery case;
In Ni-MH battery of the present invention, described Ni-MH battery also comprises Foamed Nickel, and described Foamed Nickel cushioning is in the bottom of described battery case, and the bottom of described battery core is connected with the bottom of described battery case by described Foamed Nickel.
In Ni-MH battery of the present invention, described current collecting plates comprises spider and is arranged on the connecting tab of described spider side.
The lower surface of described spider and Laos's edge of the whole positive plate after backfin all contact and spot welding is firm, described connecting tab and described battery cap spot welding firm.
In Ni-MH battery of the present invention, described insulating ferrule comprises main ring and is formed in described main ring periphery, for separating the insulation wall of described main ring and described battery case;
The external diameter of described main ring and the external diameter of described spider match; The outside of described insulation wall contacts with the madial wall of described battery case.
In Ni-MH battery of the present invention, the upper surface of described spider is provided with some solder contacts.
Implement technical scheme of the present invention, at least there is following beneficial effect: this Ni-MH battery reserves the stubborn edge that a piece is not coated with positive electrode on positive-pole base material, by the positive plate after making, after barrier film and negative plate roll into battery core, to the stubborn edge backfin of barrier film upper end be protruded to the upper surface of battery core, be connected with battery cap by the upper end of current collecting plates by battery core again, the one-point type of original lug conduction is converted to the plane formula conduction of current collecting plates, greatly optimize conductive capability, thus further increase the charge efficiency of Ni-MH battery, and improve the heavy-current discharge performance of Ni-MH battery, optimizing power performance, further replacement nickel-cadmium cell, protection of the environment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of Ni-MH battery of the present invention;
Fig. 2 is the unfolding assumption diagram of the battery core of Ni-MH battery of the present invention;
Wherein, 1, battery case; 2, battery core; 3, battery cap; 4, current collecting plates; 41, spider; 42, connecting tab; 5, insulating ferrule; 51, main ring; 52, insulation wall; 6, positive plate; 61, stubborn edge; 7, negative plate; 71, protuberance; 8, barrier film.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
With reference to Fig. 1, Fig. 2, the concrete steps making Ni-MH battery of the present invention are as follows:
Positive plate 6 making step:
Positive-pole base material is coated with positive electrode, and forms the Laos's edge not being coated with positive electrode in one end of this positive-pole base material.
Further, the sub-step of this positive plate 6 making step is as follows:
A1: prepared by positive electrode: positive electrode active materials, additive are mixed with binding agent, obtained positive electrode.
A2: before positive electrode coating: suppress one piece of cropped area by the middle of monoblock positive-pole base material, this reserved cropped area is not coated with positive electrode.
Understandably, the size of monoblock positive-pole base material should be the integral multiple of the size of required positive plate 6, namely cut the positive plate 6 that rear monoblock positive-pole base material can be divided into some block sizes consistent, the size of the monoblock positive-pole base material in some embodiments of the present invention is preferably the size of two pieces of positive plates 6.
A3: positive electrode coating, compressing tablet: positive electrode obtained in step a1 is uniformly coated on the positive-pole base material except this cropped area; And compacting is coated with this positive-pole base material of positive electrode;
A4: positive plate 6 cuts: the monoblock positive-pole base material suppressed is divided into two from the mid portion of reserved cropped area, thus be all formed with Laos's edge in the one end of two positive plates 6 separated;
Negative plate 7 making step:
Base material of cathode is coated with negative material, and forms the protuberance 71 of coating negative material in one end of this base material of cathode.
Further, the sub-step of negative plate 7 making step is as follows:
B1: negative material is coated with: hydrogen storing alloy powder and binding agent are uniformly coated on this base material of cathode.
B2: negative pole compressing tablet: this base material of cathode being coated with hydrogen storing alloy powder and binding agent in pressing step b1, obtained negative plate 7.
Roll step:
Be placed between the positive plate 6 of making and negative plate 7 by barrier film 8, and make Laos's edge of this positive plate 6 protrude the upper end of this barrier film 8, the protuberance 71 of this negative plate 7 protrudes the lower end of this barrier film 8, rolls into battery core 2 together;
Carry out sizing after this battery core 2 rolls to fix, then by Laos's edge backfin of this positive plate 6 to the upper surface of this battery core 2; Understandably, the method for backfin can adopt common processing mode, such as, adopt machine carry out stubborn limit or directly the part on stubborn limit to be beaten out by manpower whole etc.
Place step:
Battery core 2 is put into battery case 1;
Further, after this battery core 2 is put into battery case 1, at the bottom cushioning Foamed Nickel of this battery case 1, the protuberance 71 of the negative plate 7 of battery core 2 can also be carried out conduction by this Foamed Nickel with the bottom of battery case 1 and is connected;
The upper end of this battery core 2 is connected with battery cap 3 by a current collecting plates 4;
Further, the stubborn edge 61 on the spider 41 of this current collecting plates 4 and the upper surface of this battery core 2 is carried out conduction and is connected, the lug of this current collecting plates 4 is carried out conduction with this battery cap 3 and is connected.
Further, the lower surface of the spider 41 of this current collecting plates 4 and Laos's edge of this positive plate 6 after backfin are all contacted also spot welding firm, then by firm with this battery cap 3 spot welding for the connecting tab 42 of this current collecting plates 4.
Place insulating ferrule 5 between current collecting plates 4 and battery case 1, insulate with this battery case 1 to make this current collecting plates 4.
Electrolyte implantation step:
Electrolyte is injected in battery case 1.
Further, the sub-step of the implantation step of electrolyte is as follows:
C1: electrolyte quota: alkaline electrolyte is dissolved in solvent, obtained electrolyte.
C2: electrolyte injects: the electrolyte that step c1 is obtained injects in this battery case 1.
Sealing step:
This battery case 1 is sealed, obtained Ni-MH battery by battery cap 3.
The structure of the Ni-MH battery adopting above-mentioned manufacture method to make specifically is introduced below in conjunction with accompanying drawing.
Fig. 1, Fig. 2 show the Ni-MH battery in some embodiments of the present invention, the one-point type of original lug conduction is structurally converted to the plane formula conduction of current collecting plates 4 by this Ni-MH battery, then the internal resistance of this Ni-MH battery is all lower than the internal resistance of Ni-MH battery of the prior art under the same terms, and it comprises battery case 1, positive plate 6, negative plate 7, barrier film 8, current collecting plates 4, insulating ferrule 5 and battery cap 3.And this positive plate 6, negative plate 7 and barrier film 8 roll into battery core 2, this battery core 2 is arranged in battery case 1.
Battery case 1 is as the support component of whole Ni-MH battery, and it for holding parts such as battery core 2 grade, and plays certain protective effect to the parts of its inside.The choosing of material of battery case 1 needs to determine according to actual conditions.The battery case 1 of the Ni-MH battery in the present invention is preferably box hat, adopt box hat as battery case 1, the deformation of battery case 1 effectively can be prevented excessive, avoid positive plate 6 or negative plate 7 top wear barrier film 8 and cause internal short-circuit of battery, thus shorten the useful life of battery.Understandably, aluminum hull, iron-clad etc. can also be adopted.
Further, in order to prevent battery case 1 from getting rusty, this battery case 1 can also adopt the box hat of nickel plating.
The battery core 2 be arranged in this battery case 1 is rolled by positive plate 6, negative plate 7 and barrier film 8 and forms, and the battery core 2 after rolled need be carried out sizing and be fixed.Understandably, the mode that adhesive tape can be adopted to be wound around is fixed, and other common modes also can be adopted to be fixed.
In certain embodiments, this positive plate 6 comprises positive-pole base material, and this positive-pole base material comprises positive plate 6 main body being coated with positive electrode and the Laos's edge not being coated with positive electrode formed in one end of this positive plate 6 main body.Usually, positive-pole base material can select 79 wide Foamed Nickels, 89 wide Foamed Nickels and 99 wide Foamed Nickels etc.The positive-pole base material of the positive plate 6 of Ni-MH battery of the present invention is preferably 89 wide Foamed Nickels.
Further, positive plate 6 main body and stubborn edge 61 are respectively the subregion of positive plate 6 base material, and the region of positive plate 6 main body accounts for major part, and the region of stubborn edge 61 accounts for fraction and is formed in the upper end of positive plate 6 main body.When rolling into battery core 2, after the upper and lower side of positive plate 6 main body and the upper and lower side accurate contraposition of barrier film 8, just can roll, now, stubborn edge 61 just protrudes barrier film 8 upper end, be convenient to carry out follow-up by this stubborn edge 61 backfin to the operation of the upper surface of battery core 2.
Further, in order to produce the positive-pole base material with stubborn edge 61 rapidly, can first select monoblock positive-pole base material, the size of this monoblock positive-pole base material is the integral multiple of the size of required positive plate, can obtain some pieces of positive plates after namely cutting.In some embodiments of the present invention, the size of monoblock positive-pole base material is just the size of two pieces of positive plates, so that the blowing connected when producing fast and rewinding.
After suppressing one piece of cropped area in the middle of monoblock positive-pole base material, this region just as the reserved region not being coated with positive electrode, except this cropped area, monoblock positive-pole base material is all coated with positive electrode; Then, this monoblock positive-pole base material being coated with positive electrode is suppressed.Finally, from the reserved mid portion not being coated with the region of positive electrode, the monoblock positive-pole base material suppressed is divided into two, thus, disposablely obtain two pieces of positive plates with stubborn edge 61.Adopt above-mentioned mode to manufacture positive plate very convenient and swift with stubborn edge 61, be applicable to production line balance, greatly increase the efficiency of production and processing, saved human cost, be beneficial to the production of ni-mh of the present invention, use and promote.
In certain embodiments, this negative plate 7 comprises base material of cathode, and this base material of cathode comprises negative plate 7 main body being coated with negative material and the protuberance 71 not being coated with negative material in one end of this negative plate 7 main body formation.Usually, base material of cathode can select Niclad and copper mesh etc.The base material of cathode of the negative plate 7 of the Ni-MH battery in the present invention is preferably copper mesh.
Further, negative plate 7 main body and protuberance 71 are respectively the subregion of base material of cathode, and the region of negative plate 7 main body accounts for major part, and the region of protuberance 71 accounts for fraction and is formed in the lower end of negative plate 7 main body.When rolling into battery core 2, after the upper and lower side of negative plate 7 main body and the upper and lower side accurate contraposition of barrier film 8, just can roll, now, protuberance 71 just protrudes barrier film 8 lower end, is convenient to carry out the follow-up operation bottom of battery core 2 and the bottom of battery case 1 being carried out be connected.
Further, the bottom of battery case 1 can cushioning Foamed Nickel, and the bottom of battery core 2 is connected with the bottom of battery case 1 by this Foamed Nickel, and connected mode is common welding manner.Understandably, also can not the collector of the similar Foamed Nickel of cushioning bottom battery case 1, the bottom of battery core 2 is directly directly connected with the bottom of battery case 1.But in order to reach better conductive effect, cushioning Foamed Nickel is preferred embodiment of the present invention.
As shown in Figure 2, barrier film 8 is folded with between positive plate 6 and negative plate 7.
In certain embodiments, this barrier film 8 for separating positive plate 6 and negative plate 7, for the situation preventing inside battery from occurring short circuit.The upper and lower side of this barrier film 8 respectively with the upper and lower side of positive plate 6 main body and the upper and lower side contraposition of negative plate 7 main body accurate, the insulation effect that can play.
Understandably, this barrier film 8 can adopt the composite diaphragm 8 etc. that traditional PP+PE film or hydrophilic PP+PE film-string are formed.In addition, the thickness of barrier film 8 also adjusts according to actual conditions, and when the thickness of barrier film 8 is less compared to the thickness of prior art, the gap between battery core 2 and battery case 1 can increase, just can inject more electrolyte, thus can further improve the charge efficiency of Ni-MH battery.
Before battery core 2 after stereotyped being placed in battery case 1, also need by stubborn edge 61 backfin of positive-pole base material to the upper surface of battery core 2, stubborn edge 61 beats out whole by the periphery namely along battery core 2 upper end.
This battery core 2 is placed after in battery case 1, and the upper end of this battery core 2 is conducted electricity with battery cap 3 by current collecting plates 4 and is connected.Insulating ferrule 5 is provided with between current collecting plates 4 and battery case 1.
In certain embodiments, this current collecting plates 4 is for carrying out the conduction of plane formula, and it comprises spider 41 and connecting tab 42.The lower surface of this spider 41 and Laos's edge of the whole positive plate 6 after backfin all contact and spot welding is firm, and this connecting tab 42 is firm with this battery cap 3 spot welding.
Understandably, the material of current collecting plates 4 is common conductive metal material, such as, and copper, iron, aluminium etc.And because of stubborn edge 61 bend after be formed in the periphery of the upper surface of battery core 2, current collecting plates 4 only all need contact with this stubborn edge 61, then the shape of current collecting plates 4 can be in the form of annular discs or circular etc.
Further, connecting tab 42 generally has two, all can be arranged on the side of spider 41, also can be separately positioned on the both sides of spider 41.The connecting tab 42 of the current collecting plates 4 of the Ni-MH battery in the present invention is preferably all arranged on the side of spider 41.
This current collecting plates 4 is also arranged with insulating ferrule 5.
In certain embodiments, this insulating ferrule 5 is for separating this current collecting plates 4 and battery case 1, and to prevent current collecting plates 4 and battery case 1 from directly contacting the short circuit that inside battery occurs, it comprises main ring 51 and insulation wall 52.This insulation wall 52 is formed in this main ring 51 periphery, for separating this main ring 51 and battery case 1.The external diameter of the external diameter of this main ring 51 and the spider 41 of this current collecting plates 4 matches, for being set in this spider 41 exactly.
Understandably, the shape size of the main ring 51 of insulating ferrule 5 should be consistent with the shape size of the spider 41 of current collecting plates 4, to ensure to install accurately.Certainly, insulating ferrule 5 can also form the coating member enveloping current collecting plates 4 periphery, to ensure that the spider 41 that current collecting plates 4 can not occur contacts and the phenomenon of short circuit with battery case 1 further.
Further, this insulating ferrule 5 and current collecting plates 4 should form a complete production network in the production process of this Ni-MH battery, then the shape size of the shape size of the main ring 51 of insulating ferrule 5 and the spider 41 of current collecting plates 4 is consistent, also be beneficial to both processing and production, the efficiency of production and processing can be improved further, save human cost.
Place current collecting plates 4 and after buckling insulating ferrule 5, also need to use battery cap 3 to seal.
In certain embodiments, this battery cap 3 is firm with connecting tab 42 spot welding of current collecting plates 4, for the battery core 2 in sealed cell shell 1 and battery case 1, current collecting plates 4 and insulating ferrule 5.
Further, battery cap 3 usually can adopt CPCC steel, plating nickel on surface, resistance to aqueous alkali corrosion.
Below in conjunction with embodiment and comparative example, Ni-MH battery of the present invention and preparation method thereof is described further.The conventional Ni-MH battery of embodiment 1:AA1500
Select gold sky, Hunan to cover the sub-nickel of cobalt as positive electrode active materials, select 89 wide Foamed Nickels as positive-pole base material, suppress one groove at the mid portion of the wide Foamed Nickel of monoblock 89, form the reserved cropped area not being coated with positive electrode.Then, except this cropped area, even spread positive electrode on the wide Foamed Nickel of monoblock 89, and suppress the wide Foamed Nickel of monoblock 89.Finally, from the reserved mid portion not being coated with the region of positive electrode, the wide Foamed Nickel of monoblock 89 suppressed is divided into two, thus the disposable positive plate obtaining two piece of 89 wide Foamed Nickel and make, and two pieces of positive plates are all formed with Laos's edge; Cover cobalt sub-nickel, calcium oxide, yittrium oxide and polytetrafluoroethylene to mix with parts by weight 90,3,1 and 3 respectively, obtained 6.55g positive electrode, obtained positive electrode is uniformly coated on 89 wide Foamed Nickels, then adopts twin rollers evenly to suppress, obtain positive plate 6; Negative pole selects the mixture of 7.0g hydrogen storing alloy powder and binding agent, is coated on after in Niclad, adopts slurry furnace to obtain negative plate 7; Adopt up-coiler that barrier film 8, positive plate 6 and negative plate 7 are rolled into battery core 2, stubborn edge 61 backfin of positive plate 6 is to the upper surface of battery core 2, then battery core 2 is put into battery case 1, at the bottom cushioning Foamed Nickel of battery case 1, the bottom of battery core 2 is welded by the bottom of this Foamed Nickel with battery case 1.Again the upper end of battery core 2 is connected with battery cap 3 by a current collecting plates 4, the spider 41 of the stubborn edge 61 spot welding current collecting plates 4 namely on the upper surface of battery core 2, the lug spot welding battery cap 3 of current collecting plates 4.Place insulating ferrule 5 and fasten current collecting plates 4, for separating current collecting plates 4 and battery case 1, to prevent short circuit.Then at the groove rolling out about 2mm from battery case 1 mouthful of a distance channelling machine, follow-up sealing is waited until; Be that to be dissolved in parts by weight be in the distilled water of 86 for the NaOH of 21,11 and 1.5, potassium hydroxide and monohydrate lithium hydroxide by parts by weight, obtained OH-concentration is the electrolyte of 8.8mol/L, get above-mentioned electrolyte 2.85g to inject in battery case 1, then seal, obtained required Ni-MH battery.
Comparative example 1:
Gold sky, Hunan is selected to cover the sub-nickel of cobalt as positive electrode active materials, select 89 wide Foamed Nickels as positive-pole base material, cover cobalt sub-nickel, calcium oxide, yittrium oxide and polytetrafluoroethylene to mix with parts by weight 90,3,1 and 3 respectively, obtained 6.6g positive electrode, obtained positive electrode is uniformly coated on 89 wide Foamed Nickels, then adopt twin rollers evenly to suppress, obtain positive plate 6; Negative pole selects the mixture of 7.0g hydrogen storing alloy powder and binding agent, is coated on after in Niclad, adopts slurry furnace to obtain negative plate 7; Thick for 0.1mm nickel strap is cut into the lug of certain size, point is welded in the relevant position of positive plate 6; Adopt up-coiler that barrier film 8, positive plate 6 and negative plate 7 are rolled into battery core 2, then put into battery case 1; With battery cap 3 in electric welding machine spot welding on lug, then at the groove rolling out about 2mm from battery case 1 mouthful of a distance channelling machine, wait until follow-up sealing; Be that to be dissolved in parts by weight be in the distilled water of 86 for the NaOH of 21,11 and 1.5, potassium hydroxide and monohydrate lithium hydroxide by parts by weight, obtained OH-concentration is the electrolyte of 8.8mol/L, get above-mentioned electrolyte 2.75g to inject in battery case 1, then seal, obtained required Ni-MH battery.
The conventional Ni-MH battery of embodiment 2:AA1500
Select gold sky, Hunan to cover the sub-nickel of cobalt as positive electrode active materials, select 89 wide Foamed Nickels as positive-pole base material, suppress one groove at the mid portion of the wide Foamed Nickel of monoblock 89, form the reserved cropped area not being coated with positive electrode.Then, except this cropped area, even spread positive electrode on the wide Foamed Nickel of monoblock 89, and suppress the wide Foamed Nickel of monoblock 89.Finally, from the reserved mid portion not being coated with the region of positive electrode, the wide Foamed Nickel of monoblock 89 suppressed is divided into two, thus the disposable positive plate obtaining two piece of 89 wide Foamed Nickel and make, and two pieces of positive plates are all formed with Laos's edge; Cover cobalt sub-nickel, calcium oxide, yittrium oxide and polytetrafluoroethylene to mix with parts by weight 98,2,3 and 2 respectively, obtained 6.65g positive electrode, obtained positive electrode is uniformly coated on 89 wide Foamed Nickels, then adopts twin rollers evenly to suppress, obtain positive plate 6; Negative pole selects the mixture of 6.0g powdered form zinc oxide and zinc, is coated on after in Niclad, adopts slurry furnace to obtain negative plate 7; Adopt up-coiler that barrier film 8, positive plate 6 and negative plate 7 are rolled into battery core 2, stubborn edge 61 backfin of positive plate 6 is to the upper surface of battery core 2, then battery core 2 is put into battery case 1, at the bottom cushioning Foamed Nickel of battery case 1, the bottom of battery core 2 is welded by the bottom of this Foamed Nickel with battery case 1.Again the upper end of battery core 2 is connected with battery cap 3 by a current collecting plates 4, the spider 41 of the stubborn edge 61 spot welding current collecting plates 4 namely on the upper surface of battery core 2, the lug spot welding battery cap 3 of current collecting plates 4.Place insulating ferrule 5 and fasten current collecting plates 4, for separating current collecting plates 4 and battery case 1, to prevent short circuit.Then at the groove rolling out about 2mm from battery case 1 mouthful of a distance channelling machine, follow-up sealing is waited until; Be that to be dissolved in parts by weight be in the distilled water of 100 for the NaOH of 25,10 and 4, potassium hydroxide and monohydrate lithium hydroxide by parts by weight, obtained OH-concentration is the electrolyte of 9mol/L, get above-mentioned electrolyte 2.75g to inject in battery case 1, then seal, obtained required Ni-MH battery.
Comparative example 2:
Gold sky, Hunan is selected to cover the sub-nickel of cobalt as positive electrode active materials, select 89 wide Foamed Nickels as positive-pole base material, cover cobalt sub-nickel, calcium oxide, yittrium oxide and polytetrafluoroethylene to mix with parts by weight 98,2,3 and 2 respectively, obtained 6.7g positive electrode, obtained positive electrode is uniformly coated on 89 wide Foamed Nickels, then adopt twin rollers evenly to suppress, obtain positive plate 6; Negative pole selects the mixture of the mixture of 6.0g powdered form zinc oxide and zinc, is coated on after in Niclad, adopts slurry furnace to obtain negative plate 7; Thick for 0.1mm nickel strap is cut into the lug of certain size, point is welded in the relevant position of positive plate 6; Adopt up-coiler that barrier film 8, positive plate 6 and negative plate 7 are rolled into battery core 2, then put into battery case 1; With battery cap 3 in electric welding machine spot welding on lug, then at the groove rolling out about 2mm from battery case 1 mouthful of a distance channelling machine, wait until follow-up sealing; Be that to be dissolved in parts by weight be in the distilled water of 100 for the NaOH of 25,10 and 4, potassium hydroxide and monohydrate lithium hydroxide by parts by weight, obtained OH-concentration is the electrolyte of 9mol/L, get above-mentioned electrolyte 2.65g to inject in battery case 1, then seal, obtained required Ni-MH battery.
The conventional Ni-MH battery of embodiment 3:D9000
Select gold sky, Hunan to cover the sub-nickel of cobalt as positive electrode active materials, select 99 wide Foamed Nickels as positive-pole base material, suppress one groove at the mid portion of the wide Foamed Nickel of monoblock 99, form the reserved cropped area not being coated with positive electrode.Then, except this cropped area, even spread positive electrode on the wide Foamed Nickel of monoblock 99, and suppress the wide Foamed Nickel of monoblock 99.Finally, from the reserved mid portion not being coated with the region of positive electrode, the wide Foamed Nickel of monoblock 99 suppressed is divided into two, thus the disposable positive plate obtaining two piece of 99 wide Foamed Nickel and make, and two pieces of positive plates are all formed with Laos's edge; Cover cobalt sub-nickel, calcium oxide, yittrium oxide and polytetrafluoroethylene to mix with parts by weight 80,1,1 and 3 respectively, obtained 6.8g positive electrode, obtained positive electrode is uniformly coated on 99 wide Foamed Nickels, then adopts twin rollers evenly to suppress, obtain positive plate 6; Negative pole selects the mixture of 6.0g hydrogen storing alloy powder and binding agent, is coated on after in Niclad, adopts slurry furnace to obtain negative plate 7; Adopt up-coiler that barrier film 8, positive plate 6 and negative plate 7 are rolled into battery core 2, stubborn edge 61 backfin of positive plate 6 is to the upper surface of battery core 2, then battery core 2 is put into battery case 1, at the bottom cushioning Foamed Nickel of battery case 1, the bottom of battery core 2 is welded by the bottom of this Foamed Nickel with battery case 1.Again the upper end of battery core 2 is connected with battery cap 3 by a current collecting plates 4, the spider 41 of the stubborn edge 61 spot welding current collecting plates 4 namely on the upper surface of battery core 2, the lug spot welding battery cap 3 of current collecting plates 4.Place insulating ferrule 5 and fasten current collecting plates 4, for separating current collecting plates 4 and battery case 1, to prevent short circuit.Then at the groove rolling out about 5mm from battery case 1 mouthful of a distance channelling machine, follow-up sealing is waited until; Be that to be dissolved in parts by weight be in the membrane filtration pure water of 93 for the NaOH of 20,10 and 5, potassium hydroxide and monohydrate lithium hydroxide by parts by weight, obtained OH-concentration is the electrolyte of 8.6mol/L, get above-mentioned electrolyte 2.75g to inject in battery case 1, then seal, obtained required Ni-MH battery.
Comparative example 3:
Gold sky, Hunan is selected to cover the sub-nickel of cobalt as positive electrode active materials, select 99 wide Foamed Nickels as positive-pole base material, cover cobalt sub-nickel, calcium oxide, yittrium oxide and polytetrafluoroethylene to mix with parts by weight 80,1,1 and 3 respectively, obtained 6.85g positive electrode, obtained positive electrode is uniformly coated on 99 wide Foamed Nickels, then adopt twin rollers evenly to suppress, obtain positive plate 6; Negative pole selects the mixture of 6.0g hydrogen storing alloy powder and binding agent, is coated on after in Niclad, adopts slurry furnace to obtain negative plate 7; Thick for 0.1mm nickel strap is cut into the lug of certain size, point is welded in the relevant position of positive plate 6; Adopt up-coiler that barrier film 8, positive plate 6 and negative plate 7 are rolled into battery core 2, then put into battery case 1; With battery cap 3 in electric welding machine spot welding on lug, then at the groove rolling out about 5mm from battery case 1 mouthful of a distance channelling machine, wait until follow-up sealing; Be that to be dissolved in parts by weight be in the membrane filtration pure water of 93 for the NaOH of 20,10 and 5, potassium hydroxide and monohydrate lithium hydroxide by parts by weight, obtained OH-concentration is the electrolyte of 8.6mol/L, get above-mentioned electrolyte 2.7g to inject in battery case 1, then seal, obtained required Ni-MH battery.
The conventional Ni-MH battery of embodiment 4:D9000
Select gold sky, Hunan to cover the sub-nickel of cobalt as positive electrode active materials, select 99 wide Foamed Nickels as positive-pole base material, suppress one groove at the mid portion of the wide Foamed Nickel of monoblock 99, form the reserved cropped area not being coated with positive electrode.Then, except this cropped area, even spread positive electrode on the wide Foamed Nickel of monoblock 99, and suppress the wide Foamed Nickel of monoblock 99.Finally, from the reserved mid portion not being coated with the region of positive electrode, the wide Foamed Nickel of monoblock 99 suppressed is divided into two, thus the disposable positive plate obtaining two piece of 99 wide Foamed Nickel and make, and two pieces of positive plates are all formed with Laos's edge; Cover cobalt sub-nickel, calcium oxide, yittrium oxide and polytetrafluoroethylene to mix with parts by weight 85,0.5,0.5 and 4 respectively, obtained 6.9g positive electrode, obtained positive electrode is uniformly coated on 99 wide Foamed Nickels, then adopts twin rollers evenly to suppress, obtain positive plate 6; Negative pole selects the mixture of 6.0g powdered form zinc oxide and zinc, is coated on after in Niclad, adopts slurry furnace to obtain negative plate 7; Adopt up-coiler that barrier film 8, positive plate 6 and negative plate 7 are rolled into battery core 2, stubborn edge 61 backfin of positive plate 6 is to the upper surface of battery core 2, then battery core 2 is put into battery case 1, at the bottom cushioning Foamed Nickel of battery case 1, the bottom of battery core 2 is welded by the bottom of this Foamed Nickel with battery case 1.Again the upper end of battery core 2 is connected with battery cap 3 by a current collecting plates 4, the spider 41 of the stubborn edge 61 spot welding current collecting plates 4 namely on the upper surface of battery core 2, the lug spot welding battery cap 3 of current collecting plates 4.Place insulating ferrule 5 and fasten current collecting plates 4, for separating current collecting plates 4 and battery case 1, to prevent short circuit.Then at the groove rolling out about 5mm from battery case 1 mouthful of a distance channelling machine, follow-up sealing is waited until; Be that to be dissolved in parts by weight be in the distilled water of 86 for the NaOH of 15,20 and 1, potassium hydroxide and monohydrate lithium hydroxide by parts by weight, obtained OH-concentration is the electrolyte of 8.4mol/L, get above-mentioned electrolyte 2.6g to inject in battery case 1, then seal, obtained required Ni-MH battery.
Comparative example 4:
Gold sky, Hunan is selected to cover the sub-nickel of cobalt as positive electrode active materials, select 99 wide Foamed Nickels as positive-pole base material, cover cobalt sub-nickel, calcium oxide, yittrium oxide and polytetrafluoroethylene to mix with parts by weight 85,0.5,0.5 and 4 respectively, obtained 7.0g positive electrode, obtained positive electrode is uniformly coated on 99 wide Foamed Nickels, then adopt twin rollers evenly to suppress, obtain positive plate 6; Negative pole selects the mixture of 6.0g powdered form zinc oxide and zinc, is coated on after in Niclad, adopts slurry furnace to obtain negative plate 7; Thick for 0.1mm nickel strap is cut into the lug of certain size, point is welded in the relevant position of positive plate 6; Adopt up-coiler that barrier film 8, positive plate 6 and negative plate 7 are rolled into battery core 2, then put into battery case 1; With battery cap 3 in electric welding machine spot welding on lug, then at the groove rolling out about 5mm from battery case 1 mouthful of a distance channelling machine, wait until follow-up sealing; Be that to be dissolved in parts by weight be in the distilled water of 90 for the NaOH of 15,20 and 1, potassium hydroxide and monohydrate lithium hydroxide by parts by weight, obtained OH-concentration is the electrolyte of 8.4mol/L, get above-mentioned electrolyte 2.5g to inject in battery case 1, then seal, obtained required Ni-MH battery.
Embodiment 1-4 all adopts the plane formula of current collecting plates 4 to conduct electricity, and is connected upper end and the battery cap 3 of battery core 2 by current collecting plates 4.Comparative example 1-4 all adopts the one-point type of lug to conduct electricity, and is connected upper end and the battery cap 3 of battery core 2 by the lug of certain size.In addition, compared with manufacturing the manufacture method of Ni-MH battery in prior art, positive electrode consumption used in the present invention reduces, and about reduces 1-5% particularly; And increase due to space between pole group and battery case 1, the amount of the electrolyte thus injected to battery case 1 increases, and specifically about increases 3-4%.Such as, at the conventional Ni-MH battery of manufacture AA1500, its positive electrode consumption is 6.55g and 6.65g(embodiment 1 and embodiment 2), reduce the consumption of 0.05g compared to existing technology respectively; Its electrolyte injected is 2.85g and 2.75g(embodiment 1 and embodiment 2), the consumption of 0.1g is added respectively compared to prior art.The minimizing part reason of positive electrode consumption is on positive-pole base material, define stubborn edge 61, also make that the thickness of positive plate 6 is corresponding to diminish simultaneously, this is not only conducive to the raising of efficiency for charge-discharge in Ni-MH battery activation process, and contribute to the maintenance of its capacity in use procedure, namely to making moderate progress the useful life of this Ni-MH battery.In addition, in the Ni-MH battery of equal model and/or equivalent capability, the increase of electrolyte can make conductive materials increase, and is thus conducive to improving its efficiency for charge-discharge, and same to having remarkable effect the useful life of improving Ni-MH battery.
In order to the beneficial effect that the present invention that speaks more clearly can obtain, describe the outstanding advantages of the Ni-MH battery that employing is obtained by the manufacture method of inventing in detail below in conjunction with comparative example; Particularly, capacity and the internal resistance of Ni-MH battery is tested.Concrete outcome refers to table 1.
The performance test results of the Ni-MH battery of table 1 embodiment 1-4 and comparative example 1-4
As can be seen from Table 1, when employing the plane formula conduction of current collecting plates 4, the internal resistance of Ni-MH battery obtained in various embodiments of the present invention, all lower than the internal resistance of Ni-MH battery in comparative example under the same terms, therefore, adopts method of the present invention can obtain the Ni-MH battery extended useful life.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various change, combination and change.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.
Claims (10)
1. a manufacture method for Ni-MH battery, is characterized in that: said method comprising the steps of:
Positive plate (6) making step: be coated with positive electrode on positive-pole base material, and the Laos's edge not being coated with positive electrode is formed in one end of described positive-pole base material;
Negative plate (7) making step: be coated with negative material on base material of cathode, and the protuberance (71) forming coating negative material in one end of described base material of cathode;
Roll step: be placed on by barrier film (8) between the described positive plate (6) of making and described negative plate (7), and make Laos's edge of described positive plate (6) protrude the upper end of described barrier film (8), the protuberance (71) of described negative plate (7) protrudes the lower end of described barrier film (8), rolls into battery core (2) together;
Carry out sizing after described battery core (2) rolls to fix, then by Laos's edge backfin of described positive plate (6) to the upper surface of described battery core (2);
Place step: described battery core (2) is put into battery case (1); The upper end of described battery core (2) is connected with described battery cap (3) by a current collecting plates (4);
Place insulating ferrule (5) between described current collecting plates (4) and described battery case (1), insulate to make described current collecting plates (4) and described battery case (1);
Electrolyte implantation step: inject electrolyte in described battery case (1);
Sealing step: seal described battery case (1) by described battery cap (3), obtained described Ni-MH battery.
2. the manufacture method of Ni-MH battery according to claim 1, is characterized in that: described placement step is further comprising the steps of:
Bottom cushioning Foamed Nickel in described battery case (1), carries out conduction by described Foamed Nickel with the bottom of described battery case (1) by the protuberance (71) of the negative plate (7) of described battery core (2) and is connected;
The spider (41) of described current collecting plates (4) and the stubborn edge (61) on the upper surface of described battery core (2) are carried out spot welding firmly to conduct electricity and be connected, the lug of described current collecting plates (4) and described battery cap (3) are carried out spot welding and firmly conduct electricity and be connected.
3. the manufacture method of Ni-MH battery according to claim 1, is characterized in that: described positive pole making step comprises following sub-step:
A1: prepared by positive electrode: positive electrode active materials, additive are mixed with binding agent, obtained positive electrode;
A2: prepared by positive-pole base material: suppress one piece of cropped area by the middle of monoblock positive-pole base material, this reserved cropped area is not coated with positive electrode;
A3: positive electrode coating, compressing tablet: positive electrode obtained in step a1 is uniformly coated on the described positive-pole base material except described cropped area; And compacting is coated with the described positive-pole base material of positive electrode;
A4: positive plate (6) cuts: from the mid portion of reserved cropped area, the monoblock positive-pole base material suppressed is divided into two, thus one end of positive plate (6) is all formed with described Laos edge described in separate two;
In described step a1, described positive electrode active materials is for covering the sub-nickel of cobalt, and described additive is oxide or the hydroxide of calcium constituent and yttrium, and described binding agent is polytetrafluoroethylene;
In described step a1, the parts by weight of described positive electrode active materials, additive and binding agent are respectively 80 ~ 98,1 ~ 5 and 2 ~ 4.
4. the manufacture method of Ni-MH battery according to claim 1, is characterized in that: described negative pole making step comprises following sub-step:
B1: negative material is coated with: hydrogen storing alloy powder and binding agent are uniformly coated on described base material of cathode;
B2: negative pole compressing tablet: the described base material of cathode being coated with hydrogen storing alloy powder and binding agent in pressing step b1, obtained negative plate (7).
5. the manufacture method of Ni-MH battery according to claim 1, is characterized in that: described electrolyte implantation step comprises following sub-step:
C1: electrolyte quota: alkaline electrolyte is dissolved in solvent, obtained electrolyte;
C2: electrolyte injects: the electrolyte that step c1 is obtained injects in described battery case (1);
In described step c1, described alkaline electrolyte is the mixture of NaOH, potassium hydroxide and monohydrate lithium hydroxide; Described solvent is distilled water or membrane filtration pure water;
In described step c2, the concentration injecting the described electrolyte in described battery case (1) is 8.4 ~ 9.0mol/L.
6. adopt the Ni-MH battery that the manufacture method of the Ni-MH battery of arbitrary claim in claim 1 to 5 is obtained, it is characterized in that:
Described Ni-MH battery comprises positive plate (6), negative plate (7), is located in barrier film (8), battery cap (3) and battery case (1) between positive plate (6) and negative plate (7); Described positive plate (6), negative plate (7) and barrier film (8) roll into battery core (2), and described battery core (2) is arranged in described battery case (1);
Described positive plate (6) comprises positive-pole base material, and described positive-pole base material comprises positive plate (6) main body being coated with positive electrode and the Laos's edge not being coated with positive electrode formed in one end of described positive plate (6) main body;
Described negative plate (7) comprises base material of cathode, and described base material of cathode comprises negative plate (7) main body being coated with negative material and the protuberance (71) being coated with negative material in one end of described negative plate (7) main body formation;
Laos's edge of described positive plate (6) protrudes the upper end of described barrier film (8), and the protuberance (71) of described negative plate (7) protrudes the lower end of described barrier film (8); The edge backfin of described Laos is to the upper surface of described battery core (2);
Described Ni-MH battery also comprises current collecting plates (4); The upper end of described battery core (2) is conducted electricity with described battery cap (3) by described current collecting plates (4) and is connected; Insulating ferrule (5) is provided with between described current collecting plates (4) and described battery case (1).
7. Ni-MH battery according to claim 6, it is characterized in that: described Ni-MH battery also comprises Foamed Nickel, described Foamed Nickel cushioning is in the bottom of described battery case (1), and the bottom of described battery core (2) is connected with the bottom of described battery case (1) by described Foamed Nickel.
8. Ni-MH battery according to claim 6, is characterized in that: described current collecting plates (4) comprises spider (41) and is arranged on the connecting tab (42) of described spider (41) side;
The lower surface of described spider (41) and Laos's edge of the whole positive plate (6) after backfin all contact and spot welding is firm, and described connecting tab (42) is firm with described battery cap (3) spot welding.
9. Ni-MH battery according to claim 8, it is characterized in that: described insulating ferrule (5) comprises main ring (51) and is formed in described main ring (51) periphery, for separating the insulation wall (52) of described main ring (51) and described battery case (1);
The external diameter of described main ring (51) and the external diameter of described spider (41) match; The outside of described insulation wall (52) contacts with the madial wall of described battery case (1).
10. Ni-MH battery according to claim 8, is characterized in that: the upper surface of described spider (41) is provided with some solder contacts.
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Application publication date: 20141217 |
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