Method for manufacturing carbon fiber reinforced lead alloy plate grid and winding lead-acid battery

A manufacturing method and technology of lead-acid batteries, applied to battery components, circuits, electrical components, etc., can solve the problems of ineffective coating of active materials, low weight specific energy of lead-acid batteries, and easy damage of wound battery grids and other problems, to achieve the effect of good high-current discharge performance, flexible placement and matching, and long service life

Active Publication Date: 2013-07-03
HANGZHOU CHAOTAN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low weight-to-weight ratio of lead-acid batteries, their application in certain technical fields is limited, such as electric vehicles
[0003] Compared with traditional lead-acid batteries, coiled lead-acid batteries have higher weight-to-weight ratio energy. However, due to the limitation of the tensile strength of lead alloys, the grids of ordinary coiled battery grids are relatively small and dense. The amount of lead used is large, and the active material cannot be effectively coated, thereby limiting the improvement of its weight specific energy
In addition, the traditional winding battery grid is relatively easy to damage during production or use, and the scrap rate is high
In addition, when used as a power battery for an electric vehicle, the vertically placed battery brings great inconvenience to its installation in the electric vehicle due to the height restriction

Method used

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  • Method for manufacturing carbon fiber reinforced lead alloy plate grid and winding lead-acid battery
  • Method for manufacturing carbon fiber reinforced lead alloy plate grid and winding lead-acid battery
  • Method for manufacturing carbon fiber reinforced lead alloy plate grid and winding lead-acid battery

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Embodiment 1

[0030] Embodiment one: the manufacture method of carbon fiber reinforced lead alloy grid, it follows the steps:

[0031] (1) High-temperature degumming of carbon fiber cloth: carbon fiber cloth is made of unidirectional long carbon fibers (only warp threads, no weft threads) and epoxy resin. The carbon fibers are placed in an environment of 480 ° C and baked for 7 minutes to remove epoxy resin.

[0032] (2) Carbon fiber impregnation: Under the protection of anhydrous and inert gas, immerse the carbon fiber cloth degummed in step (1) into the liquid sodium-potassium alloy for 2 minutes at room temperature, and then slowly pull out the carbon fiber cloth.

[0033] (3) Hot extrusion molding: After the carbon fiber cloth is impregnated in step (2), it is quenched together with lead or lead alloy liquid under high temperature and high pressure (540°C, 510Mpa) to below 200°C, and extruded A plate with a thickness of 1.0 mm was made. The lead can be 1# lead, and the lead alloy can b...

Embodiment 2

[0039] Embodiment two: the manufacture method of carbon fiber reinforced lead alloy grid, it follows the steps:

[0040] (1) High-temperature degumming of carbon fiber cloth: carbon fiber cloth is made of unidirectional long carbon fibers (only warp threads, no weft threads) and epoxy resin, and the carbon fibers are placed in an environment of 455°C and baked for 9 minutes to remove epoxy resin.

[0041](2) Carbon fiber impregnation: Under the protection of anhydrous and inert gas, at room temperature, immerse the carbon fiber cloth degummed in step (1) into the liquid sodium-potassium alloy for 1.5 minutes, and then slowly pull out the carbon fiber cloth.

[0042] (3) Hot extrusion molding: After the carbon fiber cloth is impregnated in step (2), it is quenched together with lead or lead alloy liquid under high temperature and high pressure (460°C, 540Mpa) to below 200°C, and extruded A plate with a thickness of 1.0 mm was made. The lead can be 1# lead, and the lead alloy c...

Embodiment 3

[0045] Embodiment three: the manufacturing method of carbon fiber reinforced lead alloy grid, it follows the steps:

[0046] (1) High-temperature degumming of carbon fiber cloth: carbon fiber cloth is made of unidirectional long carbon fibers (only warp threads, no weft threads) and epoxy resin, and the carbon fibers are arranged in an environment of 495°C and baked for 5 minutes to remove epoxy resin.

[0047] (2) Carbon fiber impregnation: Under the protection of anhydrous and inert gas, at room temperature, immerse the carbon fiber cloth degummed in step (1) into the liquid sodium-potassium alloy for 3 minutes, and then slowly pull out the carbon fiber cloth.

[0048] (3) Hot extrusion molding: After the carbon fiber cloth is impregnated in step (2), it is quenched together with lead or lead alloy liquid under high temperature and pressure (500°C, 530Mpa) to below 200°C, and extruded A plate with a thickness of 1.0 mm was made. The lead can be 1# lead, and the lead alloy c...

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Abstract

The invention discloses a manufacturing method of a carbon fiber reinforced lead alloy grid and a wound lead-acid battery. The manufacturing method of carbon fiber reinforced lead alloy grid is as follows: (1) High temperature degumming of carbon fiber cloth: carbon fiber cloth is made of unidirectional long carbon fiber and epoxy resin, and the carbon fiber is arranged in an environment of 450 ° C ~ 500 ° C and baked for 5 ~10min, remove the epoxy resin; (2) carbon fiber impregnation: in anhydrous and inert gas protection, immerse the carbon fiber cloth in the liquid sodium-potassium alloy, and then pull it out; (3) hot extrusion molding: carbon fiber cloth Together with lead or lead alloy liquid at a temperature of 450°C~500°C and a pressure of 500Mpa~550Mpa, it is quenched to below 200°C and extruded into a sheet; (4) Calendering: rolled into a sheet; (5) Punching : Punch out the hole. The carbon fiber reinforced lead alloy grid produced by the invention has high tensile strength, good electrical conductivity, light weight, good corrosion resistance, etc., and more active materials can be coated on a unit area. Wound lead-acid batteries have higher mass specific energy and volume specific energy.

Description

technical field [0001] The invention belongs to the technical field of winding lead-acid battery manufacturing, and in particular relates to a method for manufacturing a carbon fiber reinforced lead alloy grid and a winding lead-acid battery. Background technique [0002] Due to its stable performance and low price, lead-acid batteries have been widely used in energy, communication, electric power, transportation and military fields for many years. However, lead-acid batteries have a low weight-to-energy ratio, which limits their application in certain technical fields, such as electric vehicles. [0003] Compared with traditional lead-acid batteries, coiled lead-acid batteries have higher weight-to-weight ratio energy. However, due to the limitation of the tensile strength of lead alloys, the grids of ordinary coiled battery grids are relatively small and dense. The amount of lead used is large, and the active material cannot be effectively coated, thereby limiting the imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/82H01M4/68H01M2/28H01M50/541
CPCY02E60/10
Inventor 汪训国
Owner HANGZHOU CHAOTAN NEW MATERIAL TECH
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