Positive plate reinforced lead-acid accumulator

A technology for lead-acid batteries and positive plates, applied in the direction of lead-acid batteries, lead-acid battery electrodes, etc., can solve the problems of reduced binding force between active material particles, increased porosity, and battery failure, so as to improve service life and prevent The effect of battery failure, delaying the growth process

Inactive Publication Date: 2010-05-26
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the grid deforms and grows, the volume of the entire positive electrode will also increase, and the positive electrode will expand. When the battery is charged, the PbSO 4 converted to PbO 2 , so that the porosity increases with the increase of the number of cycles, the positive electrode is severely expanded, the porosity is excessively increased, the binding force between the active material particles is reduced, the electrical contact is destroyed, and the battery fails.

Method used

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  • Positive plate reinforced lead-acid accumulator
  • Positive plate reinforced lead-acid accumulator

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Embodiment

[0028] Example: Combine figure 1As shown, the positive plate-reinforced lead-acid battery provided in this embodiment includes several positive plates 1 and negative plates 2 arranged at intervals, wherein the active material surface of the positive plate 1 is coated with a carbon fiber composite coating 3. The carbon fiber composite coating 3 is made of a mixture of carbon fiber 35%, graphite fiber 35%, carboxymethyl cellulose 12%, and fluororubber 18% by weight to coat the active material on the positive plate 1. The surface is then dried and cured. And in this embodiment, the total weight of the above mixture accounts for 0.002% of the weight of lead in the lead paste formula of the positive plate 1 .

[0029] The carbon fibers and graphite fibers used in this example are commercial carbon fibers and graphite fibers with a strength of 2000 MPa and a modulus of 250 GPa.

[0030] In this embodiment, the drying temperature is preferably 35° C., and the drying time is 1 hour...

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Abstract

The invention discloses a positive plate reinforced lead-acid accumulator which comprises a positive plate and a negative plate. The invention is characterized in that a carbon fiber composite coating is coated on the active substance surface of the positive plate, and the carbon fiber composite coating is the mixture of carbon fibers and the corresponding substrate. Since the carbon fiber composite coating with high strength and superhigh bearing capacity is coated on the active substance surface of the positive plate, the invention greatly enhances the structural strength and the dimensional stability of the positive plate and prolongs the service life of the accumulator.

Description

technical field [0001] The invention relates to a positive plate reinforced lead-acid storage battery. Background technique [0002] Today, when oil and other energy resources are becoming increasingly tense and air pollution is becoming more and more serious, electric bicycles, which are light, fast, pollution-free, and low-cost vehicles, have become more and more popular. Batteries are the most critical components of electric vehicles and are the energy source of electric vehicles. Currently, lead-acid batteries are widely used, accounting for more than 95% of the market share. Lead-acid batteries are recognized by consumers because of their rich resources, low price and good safety performance. [0003] However, as the power source of electric vehicles, lead-acid batteries have disadvantages such as low volume specific energy and weight specific energy and short service life compared with battery systems such as nickel-metal hydride batteries and lithium batteries. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/06H01M4/14H01M4/20
CPCY02E60/126Y02E60/10
Inventor 柳颖高建峰张娟周建国
Owner SUZHOU UNIV
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