CN2351838Y

CN2351838Y - Negative electrode structure for nickel hydride secondry battery

Info

Publication number: CN2351838Y
Application number: CN98218014U
Authority: CN
Inventors: 陈有孝; 胡庸; 刘骊
Original assignee: TAIJI ENERGY CO Ltd DALIAN CITY
Current assignee: TAIJI ENERGY CO Ltd DALIAN CITY
Priority date: 1998-08-04
Filing date: 1998-08-04
Publication date: 1999-12-01
Anticipated expiration: 2008-08-04

Abstract

The utility model relates to the negative plate structure of a nickel hydride secondary battery. A negative plate is formed by that the surface of an iron wire mesh is plated with one layer of Ni-P by the process of chemical plating and both sides of the iron wire mesh are attached with hydrogen storage alloy plate active material. The utility model has the advantages of simple structure and processing technology and low cost, and the nickel hydride secondary battery assembled by the negative plate keeps the high performance of a prior nickel hydrogen battery while the cost is greatly reduced. The utility model can satisfy the requirements of the battery in all technical fields.

Description

Nickel hydride secondary battery cathode chip architecture

The utility model relates to the storage battery field, particularly a kind of nickel hydride secondary battery cathode chip architecture.

The nickel hydride secondary cell is a kind of pollution-free battery that replaces existing nickel-cadmium cell.Because it is pollution-free, memory-less effect, high-rate discharge ability is good, the volumetric specific energy height, capacity is 1.5-2 times of nickel-cadmium cell commonly used at present, so be subjected to the attention of international battery circle day by day, world developed country all develops the research and development of nickel-Hydrogenized compound battery as secondary energy sources emphasis.Yet in the prior art, make negative plate with nickel foam, fiber nickel, nickel sheet slurry method, the costing an arm and a leg of its carrier, and also all containing atomic percent in most hydrogen bearing alloys is 8.3% metallic cobalt.Therefore cause the cost of Ni-MH battery too high, influenced promoting the use of of it.

The purpose of this utility model is and overcomes shortcoming of the prior art, and proposes a kind of maintenance nickel hydride secondary cell characteristic property, and nickel hydride secondary battery cathode chip architecture with low cost.

The purpose of this utility model can realize by following proposal.

Nickel hydride secondary battery cathode chip architecture, its said negative plate are to plate layer of Ni-P layer on the surface of an iron wire mesh grid with the method for chemical plating, and make at the attached hydrogen bearing alloy sheet of its two side pressure active material.

Below in conjunction with embodiment of the present utility model and accompanying drawing, nickel hydride secondary battery cathode chip architecture is described in detail.

The schematic diagram of Fig. 1 negative plate structure;

Fig. 2 negative plate iron wire mesh grid schematic diagram.

Nickel hydride secondary battery cathode chip architecture is to plate layer of Ni-P layer on the surface of an iron wire mesh grid 1 with the method for chemical plating, and makes at the attached hydrogen bearing alloy sheet of its two side pressure active material 2.Wherein, in the Ni-P coating of iron wire mesh grid, its phosphorus content is at 5.7-6.3%.Iron wire 3 sectional areas of iron wire mesh grid are 0.2-1mm ², the iron wire mesh grid has 10-50 hole/cm ²The hydrogen bearing alloy sheet of negative electrode active material is by the PTFE of alloy material storing hydrogen adding 0.5-0.8%, and the ethanol of 2-5% and distilled water are through twisting with the fingers tablet forming repeatedly.Alloy material storing hydrogen component ratio (atomic percent) is: MmNi0.1-7Mn0.01-2Al0.01-2Cr0.01-2Nb0.01-1Zr0.01-1Co0.01-1.Negative electrode active material manufacturing process is that the alloyed powder with aforementioned alloy material storing hydrogen is worn on vibrating ball-mill adds PTFE and ethanol again,, presses through anti-φ 23-40 μ m retwist alloyed powder furnishing pasty state with distilled water, is pressed into alloy sheet.Then, the pressure of this sheet with 49-98MPa is pressed on the iron wire mesh grid sheet that is coated with Ni-P coating, makes negative plate.

The utility model structure and technology are simple, and is cheap, kept the superior function of original Ni-MH battery with the nickel hydride secondary cell of its assembling, and price reduces significantly, can satisfy the needs of every field to this battery.

Claims

1 one kinds of nickel hydride secondary battery cathode chip architectures is characterized in that said negative plate is to plate layer of Ni-P layer on the surface of an iron wire mesh grid with the method for chemical plating, and make at the attached hydrogen bearing alloy sheet of its two side pressure active material.

2 according to the described negative plate structure of claim 1, it is characterized in that its phosphorus content is at 5.7-6.3% in the Ni-P coating of said negative plate iron wire mesh grid.

3 according to the described negative plate structure of claim 1, and the iron wire sectional area that it is characterized in that said iron wire mesh grid is 0.2-1mm ², the iron wire mesh grid has 10-50 hole/cm ²