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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: 2011-11-16
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

Examples

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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 fingers.

[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 (temperature 540°C, pressure 510Mpa) to below 200°C, and extruded A plate with a thickness of 1.0 mm was made. The lead can be 1# lea...

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. The carbon fibers are placed in an environment of 455°C and baked for 9 minutes to remove epoxy resin fingers.

[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 and 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 ...

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. The carbon fibers are placed in an environment of 495°C and baked for 5 minutes to remove epoxy resin fingers.

[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 high pressure (temperature 500°C, pressure 530Mpa) to below 200°C, and extruded A plate with a thickness of 1.0 mm was made. The lead can be 1...

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Abstract

The invention discloses a method for manufacturing a carbon fiber reinforced lead alloy plate grid and a winding lead-acid battery. The method comprises the following steps: (1) degumming carbon fiber sheets at a high temperature: arranging the carbon fiber sheets in an environment of 450-500 DEG C and roasting for 5-10 minutes to remove the epoxy resins, wherein the carbon fiber sheets are made from unidirectional long carbon fibers and epoxy resins; (2) soaking the carbon fibers: soaking the carbon fiber sheets in a liquid sodium-potassium alloy in an anhydrous and inert gas protection atmosphere and then taking out the carbon fiber sheets; (3) carrying out hot extrusion forming: quenching carbon fiber sheets and a lead or lead alloy liquid to below 200 DEG C, and extruding to manufacture a plate, wherein the lead or lead alloy liquid is at the temperature of 450-500 DEG C and the pressure of the lead or lead alloy liquid is 500-550Mpa; (4) rolling: rolling to form the plate; and (5) punching: punching to form holes. The prepared carbon fiber reinforced lead alloy plate grid is high in tensile strength, good in electroconductibility, light in weight and good in corrosion resistance, and can be coated with more active substances in unit area. The winding lead-acid battery prepared by the plate grid has the advantages of higher mass specific energy and volumetric 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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IPC IPC(8): H01M4/82H01M4/68H01M2/28H01M50/541
CPCY02E60/12Y02E60/10
Inventor 汪训国
Owner HANGZHOU CHAOTAN NEW MATERIAL TECH
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