CN2517118Y

CN2517118Y - Low-cost square nickel power battery

Info

Publication number: CN2517118Y
Application number: CN01271181U
Authority: CN
Inventors: 许开华; 聂祚仁; 郭学益
Original assignee: GELINMEI ENVIRONMENT MATERIAL
Current assignee: Shenzhen Green Eco-Manufacture Hi-Tech Co Ltd; Shenzhen Gem High Tech Co Ltd
Priority date: 2001-11-22
Filing date: 2001-11-22
Publication date: 2002-10-16
Anticipated expiration: 2011-11-22

Abstract

The utility model discloses a low cost quadrate Ni power battery, comprising a housing, a diaphragm and an electrolyte arranged in the housing, and a positive plate and a negative plate arranged in the housing and separated by the diaphragm; cathode material and anode material are respectively arranged on the positive plate and the negative plate; the positive plate and the negative plate adopt double-sided burr steel strips. The utility model has the advantages that, by changing the positive plate and the negative plate into the double-sided burr perforation steel strips, the filling performance, the cohesiveness and the high current charge and discharge withstanding performance from the polar plates of the utility model to the cathode material and the anode material are equal to or even superior to foamed nickel polar plates; the objective of reducing the nickel consumption of polar plates is achieved by using the steel strips containing no nickel to change the structure of the utility model; the cost of nickel batteries is greatly reduced; the cost of the polar plates improved by the utility model is only 1/10 of the cost of foamed nick polar plates and 1/2 of the cost of burr-free steel strips; and by using the polar plates, more than 10% of the cost of the batteries is reduced.

Description

A kind of low-cost square nickel power battery

Technical field

The utility model relates to field of batteries, relates in particular to a kind of nickel power battery.

Background technology

In the prior art, nickel is that rechargeable battery is because of pollution-free being widely used in its excellent electric performance and the use.After as communication, the electronics energy, develop the batteries such as ni-mh of super high power again, make it to be applied in electric power and the field of traffic, make drive energy with the gasoline that its alternative contaminated environment is more serious, and obtained significant progress.But nickel power battery of the prior art has very high cost, and it can't be competed with the petrol power source on market mutually, has limited the commercial applications of the chemical energy source of this environmental protection greatly.

Chemical cell is made up of electrode, electrolyte, barrier film and shell.Electrode is the core of battery, divides positive pole and negative pole, and it is that pole plate is formed by electrode substance and conducting matrix grain, and just existing nickel is the cost accounting situation of electrokinetic cell, and the cost of the pole plate of electrode will account for more than 30% of entire cell cost.

Why does electrode pad have so high cost? its reason just is that it has used expensive nickel.

Before 1985, nickel is that battery is mainly with sintered type production, bipolar pole plate mainly adopts the porous steel strip of punching, and require steel band punching edge can not have burr, with nickel powder at high temperature (900-1100 ℃) be prefabricated into the pole plate of porous, wherein want the nickel powder of consume expensive to make the multiaperture electrode framework.This pole plate is relatively poor to the caking property of electrode substance, can not make high-capacity battery.

After 1985, the nickel that bipolar pole plate occurred doing with foaming nickel is battery, Three Dimensions Structure and its superior corrosion resistance of foaming nickel have realized that nickel is the microminiaturization and the high capacity of battery, but its price is too high, do not re-use foaming nickel so that occurred negative pole later in 1997, making electrode pad but reuse porous steel strip, is battery but anode plate still uses single bubble nickel of foaming nickel, and this single bubble nickel is that battery is used till today always.It is still higher to make foaming structure system positive plate cost with pure nickel like this.

Summary of the invention

The purpose of this utility model is to improve the deficiencies in the prior art, provides a kind of its performance not reduce but the low-cost square nickel power battery of cost reduction.

For achieving the above object, the utility model is taked following design:

The square nickel that the utility model provides is that electrokinetic cell comprises shell, be provided with barrier film and electrolyte in the shell, also include and be located at the positive and negative electrode pole plate of being kept apart by described barrier film in the shell, be respectively equipped with positive electrode and negative material thereon, described positive and negative pole plate adopts two-sided burr steel belt;

Described two-sided burr steel belt is for being provided with the steel band of rule burr in the both sides of steel band, described burr compartment of terrain distributes on the two sides of described perforated steel ribbon; On described perforated steel ribbon, be provided with electrodeposited coating, described electrodeposited coating can be nickel coating, also can be provided with the metal level that overpotential of hydrogen evolution is higher than nickel again on the basis of nickel coating, as the composite deposite that zinc layer, tin layer, cadmium layer, cobalt layer, copper layer, silver layer or palladium layer constitute, described electrodeposited coating can also be an alloy layer.

The low-cost square nickel power battery that the utility model provides is by becoming positive/negative plate two-sided burr perforated steel ribbon, because gather burr on the two sides of steel band, and burr is higher, be three-dimensional structure, the electrode plate structure that is different from no burr steel belt of the prior art and nickel foam, the electrode plate structure of this battery all is equal to even is better than the nickel foam pole plate to the fillibility of positive and negative pole material and caking property and anti-high rate during charging-discharging, with not nickeliferous steel band by the change of its structure having been played the purpose that makes pole plate reduce the use amount of nickel, the cost of nickel-based battery is obviously reduced, the pole plate that the present invention improves is 1/10 of a nickel foam pole plate cost, be not to be with 1/2 of burr steel belt cost, use this pole plate can make battery cost reduce more than 10%.The pole plate of making simultaneously can compare favourably with the pole plate with nickel foam system.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

The structural representation of the battery that Fig. 1 provides for the utility model

Fig. 2 is the structural representation of used two-sided burr steel belt

Fig. 3 is the end view of Fig. 2

Embodiment

Be illustrated in figure 1 as the structural representation of the square nickel power battery that the utility model provides, in shell 7, be provided with positive plate 4 and negative plate 5, the positive and negative electrode material is established in the outside of positive/negative plate, in positive and negative material peripheral hardware dividing plate (not shown), it is fixed in the shell 7 by insulated rollers 6, inject electrolyte solution in the enclosure, the upper port of shell 7 is shut by lid 3, is provided with pole on lid 3.

Positive and

negative pole plate

4,5 has the two-sided burr steel belt of nickel and cobalt composite galvanized coating for adopting surface nickel, and burr 4-1,5-1 compartment of terrain distribute on the two sides of described perforated steel ribbon, and the average height of burr is at 5 millimeters.Be provided with two-layer electrodeposited coating on described perforated steel ribbon, bottom 4-2,5-2 are nickel coating, and its thickness is 3 microns, and upper strata 4-3 and 5-3 are cobalt coating, and its thickness is 5 microns.

Claims

1, a kind of low-cost square nickel power battery, comprise shell, be provided with barrier film and electrolyte in the shell, also include and be located at the positive and negative electrode pole plate of being kept apart by described barrier film in the shell, be respectively equipped with positive electrode and negative material thereon, it is characterized in that: described positive and negative pole plate adopts two-sided burr steel belt.

2, nickel power battery according to claim 1 is characterized in that: described two-sided burr steel belt is for being provided with the steel band of rule burr in the both sides of steel band, described burr compartment of terrain distributes on the two sides of described perforated steel ribbon; On described perforated steel ribbon, be provided with electrodeposited coating.

3, nickel power battery according to claim 2 is characterized in that: described electrodeposited coating is a nickel coating.

4, nickel power battery according to claim 2 is characterized in that: be provided with the metal level of one deck at least that overpotential of hydrogen evolution is higher than nickel on the basis of described nickel coating again.

5, nickel power battery according to claim 2 is characterized in that: described electrodeposited coating is an alloy layer.