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Nickel-hydrogen storage battery electrode plate, nickel-hydrogen storage battery and preparation method thereof

A nickel-metal hydride storage battery and electrode plate technology, which is applied to alkaline battery electrodes, nickel storage batteries, alkaline storage batteries, etc., can solve the problems of short cycle life of nickel-hydrogen storage batteries, small battery capacity, and prone to thermal runaway, and achieve quality Reliable, stable discharge voltage, and the effect of avoiding thermal runaway

Inactive Publication Date: 2010-05-05
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nickel-hydrogen battery with this structure has a short cycle life, is prone to thermal runaway during use, has poor safety in use, and produces a battery with a small capacity.

Method used

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  • Nickel-hydrogen storage battery electrode plate, nickel-hydrogen storage battery and preparation method thereof
  • Nickel-hydrogen storage battery electrode plate, nickel-hydrogen storage battery and preparation method thereof
  • Nickel-hydrogen storage battery electrode plate, nickel-hydrogen storage battery and preparation method thereof

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preparation example Construction

[0024] The preparation method of the nickel-metal hydride storage battery electrode plate of the present invention is: the positive and negative electrode active material that mixes evenly in powder form is wrapped in the perforated steel belt and is made into the pole strip 1, and then the required number of pole strips 1 are placed up and down Interlocked with each other, rolled by the roller of the embossing machine to form a whole large plate blank, cut the large plate blank into the required length of the plate blank by a shearing machine, install it in the plate frame 2, and The positive and negative plates of the nickel-metal hydride storage battery of the present invention are obtained after die stamping.

[0025] The nickel-hydrogen battery of the present invention comprises the above-mentioned nickel-hydrogen battery positive plate 3, negative plate 4, spacer 5, battery container 6, electrolyte, positive current collector 7, negative current collector 8, pole 9, etc.,...

Embodiment 1

[0029] (1) Preparation of the positive plate of the nickel-metal hydride storage battery: Mix nickelous hydroxide, flake graphite powder, and cobaltous oxide with a mixer in a mass ratio of 79.5:17.4:3.1 to make a positive active material, and use a powder coating machine to The positive active material is wrapped in a 0.1mm×25mm perforated steel strip, the weight of the 50mm strip of the control plate is 6.0g, and 14 strips are used for the plate blank, the weight of the control plate blank is 226g~234g, and the size of the plate blank is 138mm×194mm×3.5mm, the plate blank is put into the plate frame and punched to obtain the positive plate. The size of the positive plate is 141mm×231mm×3.7mm, and 10 positive plates are used;

[0030] (2) Preparation of the negative plate of the nickel-metal hydride storage battery: the hydrogen storage alloy powder (LaNi 5 ), flake graphite powder, and cobaltous oxide are mixed evenly with a mixer in a mass ratio of 97: 2: 1 to make the nega...

Embodiment 2

[0037] (1) Preparation of the positive plate of the nickel-metal hydride storage battery: Mix nickelous hydroxide, flake graphite powder, and cobaltous oxide with a mixer in a mass ratio of 80:17.5:2.5 to make the positive active material, and put the The positive active material is wrapped in a 0.1mm×25mm perforated steel strip, the weight of the 50mm strip of the control plate is 6.0g, and 17 strips are used for the plate blank, the weight of the control plate blank is 297g~308g, and the size of the plate blank is 148mm×230mm×3.3mm, the plate blank is put into the plate frame and punched to obtain the positive plate. The size of the positive plate is 151mm×268mm×3.3mm, and 15 positive plates are used;

[0038] (2) Preparation of the negative plate of the nickel-metal hydride storage battery: the hydrogen storage alloy powder (LaNi 5), flake graphite powder, and cobaltous oxide are uniformly mixed with a mixer in a mass ratio of 95: 4: 1 to make the negative active material, ...

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Abstract

The invention provides a nickel-hydrogen storage battery electrode plate with larger capacity and a preparation method thereof and also provides a nickel-hydrogen storage battery which has long service life, good use safety and larger capacity and can be reused. The nickel-hydrogen storage battery electrode plate comprises an electrode plate blank spliced by a plurality of electrode plate strips, an electrode plate frame for installing the electrode plate blank, and a positive and negative active substance packed in the middle of the electrode plate strips. The nickel-hydrogen storage battery comprises a positive electrode plate, a negative electrode plate, a partition, a battery container, electrolyte, a positive collector plate, a negative collector plate and a post terminal, wherein the positive electrode plate and the negative electrode plate of the nickel-hydrogen storage battery adopt the nickel-hydrogen storage battery electrode plate. The electrode plate of the storage battery can be machined into a needed size according to needs; the collector plates are in acetylene welding or convex rivet welding with the positive electrode plate and the negative electrode plate, and the welded electrode assembly has very high mechanical strength, thus the capacity of the produced storage battery is greatly improved as compared with that of a traditional cylindrical or a square nickel-hydrogen storage battery.

Description

technical field [0001] The invention relates to a large-capacity nickel-hydrogen storage battery and a preparation method thereof, belonging to the technical field of nickel-hydrogen storage battery manufacturing. Background technique [0002] Nickel-metal hydride storage battery is an alternative product of cadmium-nickel storage battery, with a large output and a wide range of applications. In addition to the electrolyte, the traditional nickel-metal hydride batteries are generally structurally: (1) positive plate: there are three main preparation methods: one is to fill the sintered porous nickel matrix with chemical or electrochemical methods to fill the active nickel hydroxide The second is to use a foam or fiber nickel matrix to fill the active material with slurry to make the positive plate; the third is to use the slurry or rolling method to dry the positive plate; (2) Negative plate: preparation method There are three main types: one is to pressurize hydrogen-absor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/24H01M4/26H01M10/30
CPCY02E60/124Y02E60/10
Inventor 刘明章蒲美郭圣文
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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