CN201142347Y

CN201142347Y - High capacity nickel-hydrogen cell

Info

Publication number: CN201142347Y
Application number: CNU2007201827337U
Authority: CN
Inventors: 陈端典
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-29
Filing date: 2007-09-29
Publication date: 2008-10-29
Anticipated expiration: 2017-09-29

Abstract

The utility model provides a high power nickel-hydrogen battery. The anode of the battery is of a pole piece, and the pole piece is formed by nickel foam filled with materials such as active substances, conductive agents, additives, etc.; a rectangular nickel strip 2 is welded on the basal body of the nickel foam, thus, the conductivity of the anode is strengthened; the anode nickel strip is adhered with an insulating tape, and an insulating gasket is not positioned at the bottom part of a steel shell, thus, the cathode is enabled to protrude out of a membrane; the cathode is also provided with a copper mesh along the direction facing toward the bottom part of the steel shell, and the copper mesh is directly contacted with the bottom part of the steel shell on the same plane, thus, the conductive effect of the cathode is strengthened. The battery of the utility model can be used for charging and discharging under the high power of 15 to 25 C.

Description

A kind of high-capacity nickel-hydrogen battery

Technical field

The utility model relates to a kind of rechargeable battery, particularly a kind of high-capacity nickel-hydrogen battery.

Background technology

Ni-MH battery is a kind of novel lean solution alkaline battery of researching and developing energetically both at home and abroad in recent years.Existing Ni-MH battery is to be arranged in the box hat after adopting positive electrode, negative electrode, membrane coil coiled one cylinder, place one between its bottom and the box hat and put insulation spacer, again through slot rolling, spot welding, notes electrolyte, seal, change into handling process and make.This battery has replaced nickel-cadmium cell owing to have energy gradually than height, avirulence pollution, low cost and other advantages, and when still using under heavy current, high-power environment, the performance of Ni-MH battery is not so good as nickel-cadmium cell.Therefore, Ni-MH battery fails to replace nickel-cadmium cell always.

Improve the performance of Ni-MH battery under high power conditions and become the main points that those skilled in that art pay close attention to.

The utility model content

At defective that exists in the prior art and deficiency, the purpose of this utility model is to propose a kind of high-capacity nickel-hydrogen battery, make its can be in heavy current, performance can be equivalent to the performance of nickel-cadmium cell substantially when high-power environment used.

In order to achieve the above object, the utility model proposes a kind of high-capacity nickel-hydrogen battery, comprising: nickel electrode 1, hydrogen electrode 3, barrier film, electrolyte, box hat, sealing ring and battery cap, described block is connected with nickel electrode, it is characterized in that, be connected with nickel strap 2 as lead on the described nickel electrode 1; Described hydrogen electrode 3 is provided with the copper mesh as conducting matrix grain; Described nickel electrode 1, hydrogen electrode 3, membrane coil around and be arranged in the described box hat, described hydrogen electrode 3 protrudes described barrier film; Described copper mesh contacts with described box hat bottom.

Preferred as technique scheme, described nickel electrode 1 are made by nickel foam, and described nickel foam is filled with active material, conductive agent and additive.

Preferred as technique scheme, described nickel strap 2 is a rectangle, its both sides are pasted with the insulation gummed paper.

Preferred as technique scheme, described nickel electrode 1 is a conducting base with the punching nickel plated steel strip, and adopts the wet method slurry to handle.

The utility model proposes a kind of high-capacity nickel-hydrogen battery, its positive pole forms pole piece by the nickel foam that is filled with materials such as active material, conductive agent and additive, point is welded with rectangle nickel strap 2 on nickel foam substrate, strengthen anodal conductive capability, post the insulation gummed paper on the anodal nickel strap, and do not put insulation spacer bottom the box hat, make negative pole protrude barrier film, and negative pole also has copper mesh at grade with the directly contact of box hat bottom, the negative pole conductive effect of enhancing towards the box hat bottom direction.Battery of the present utility model can be used for discharging and recharging use under the 15-25C high power conditions.

Description of drawings

Fig. 1 is the utility model preferred embodiment structure cutaway view;

Fig. 2 launches schematic diagram for nickel electrode;

Fig. 3 launches schematic diagram for the hydrogen negative electrode;

Fig. 4 is the vertical view cutaway drawing of Fig. 1.

Embodiment

Engaging accompanying drawing below is described further the utility model.

The utility model preferred embodiment as shown in Figure 1, nickel electrode 1, hydrogen electrode 3, barrier film 5, electrolyte, box hat 7, sealing ring and battery cap 6, described block 6 and nickel extremely electricity 1 are connected, and as shown in Figure 2, are connected with nickel strap 2 as lug on the described nickel electrode 1; As shown in Figure 3, described hydrogen electrode 3 bottoms are provided with the copper mesh 4 as conducting matrix grain; As shown in Figure 4, described nickel electrode 1, hydrogen electrode 3, barrier film 5 are reeled and are arranged in the described box hat 7, and described hydrogen electrode 3 protrudes described barrier film 5; Described copper mesh 4 is folded into and the identical shape in box hat 7 bottoms, contacts with described box hat 7 bottoms.

Wherein, as shown in Figure 1, described barrier film 5 is clipped between the positive and negative electrode, place described box hat 7 through reeling, wherein negative pole 3 protrudes barrier film 5, and described nickel electrode 1 adopts dry manufacturing process, uses nickel foam to make basis material, and with the active material powder packed, described active material is by 93%Ni (OH) ₂Mix with 6%CoO and 1%PTFE.

As shown in Figure 1, in the present embodiment on the nickel electrode 1 point be welded with rectangle nickel strap 2.Size 32.0 * 70 * 0.78mm of nickel electrode 1, contained active material weight is 4.6-4.8g on it.Hydrogen electrode 3 adopts copper mesh 4 as conducting matrix grain, and presses hydrogen storing alloy powder in the both sides of copper mesh 4.Size 33 * 110 * 0.30mm of hydrogen electrode 3, and to have an end that 3mm is arranged at it be sky copper mesh 4, the alloyed powder content of hydrogen electrode 3 is 5.4～5.7g.

When nickel electrode 1, barrier film 5 and the hydrogen electrode 3 of reeling are in the box hat of putting as described 7, insulation spacer (as the PVC thin slice) is not put in its bottom, the base copper net folding becomes a plane, with the directly contact of box hat bottom, to strengthen conductive capability, wherein said box hat is the nickel plating box hat of 13.9 * 13.5 * 43mm.After above-mentioned parts assembling was finished, through slot rolling, electrolyte was annotated in spot welding, seals, changes into processing, can make high-capacity nickel-hydrogen battery.

During in this use is novel another implemented, the nickel foam that is used to make nickel electrode 1 also can adopt the punching nickel plated steel strip as conducting base, handles with the wet method slurry.Equally, the also available punching nickel plated steel strip of hydrogen electrode 3 is as conducting base, and the wet method slurry is handled.

Certainly; the utility model also can have other embodiment; under the situation that does not deviate from the utility model spirit and essence thereof; the person of ordinary skill in the field works as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of claim of the present utility model.

Claims

1, a kind of high-capacity nickel-hydrogen battery, comprise: nickel electrode (1), hydrogen electrode (3), barrier film, electrolyte, box hat, sealing ring and battery cap, described block is connected with nickel electrode, it is characterized in that, is connected with nickel strap (2) on the described nickel electrode (1) as lead; Described hydrogen electrode (3) is provided with the copper mesh as conducting matrix grain; Described nickel electrode (1), hydrogen electrode (3), membrane coil around and be arranged in the described box hat, described hydrogen electrode (3) protrudes described barrier film; Described copper mesh contacts with described box hat bottom.

2, high-capacity nickel-hydrogen battery according to claim 1 is characterized in that, described nickel electrode (1) is made by nickel foam, and described nickel foam is filled with active material, conductive agent and additive.

3, high-capacity nickel-hydrogen battery according to claim 1 is characterized in that, described nickel strap (2) is a rectangle, and its both sides are pasted with the insulation gummed paper.

4, high-capacity nickel-hydrogen battery according to claim 4 is characterized in that, described nickel electrode (1) afflux dish is spoted weld on the described battery cap.

5, high-capacity nickel-hydrogen battery according to claim 1 is characterized in that, described copper mesh strengthens the conductive effect of hydrogen electrode at grade with the directly contact of box hat bottom.