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Lead Carbon Batteries for Electric Vehicles

A lead-carbon battery, electric vehicle technology, applied in lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the problems of poor safety, low energy, and heavy weight of large-capacity lithium batteries

Inactive Publication Date: 2011-12-28
NANJING SHUANGDENG SCI TECH DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium-ion battery: light weight, long life, but high price, and poor safety of large-capacity lithium battery; Ni-MH battery: light weight, medium life, but high price, low energy (mainly due to low monomer voltage and large self-discharge) ; Ordinary lead-acid battery: low price, large capacity, but heavy weight and short life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Mix active carbon, conductive agent, and binder according to the following weight percentages, 55% of activated carbon, 30% of conductive agent, and 15% of binder, wherein the conductive agent is selected from natural graphite, and the binder is selected from polytetrafluoroethylene (PTFE ), add an appropriate amount of deionized water, mix it into a paste, apply the mixed carbon paste evenly on the lead collector, use a film rolling machine for roll forming, and vacuum dry at 50°C to obtain Negative pole piece, positive pole uses PbO 2 For the positive electrode, wrap the positive electrode with a separator, choose a glass fiber separator as the separator, and form a cell according to the ratio of positive and negative electrodes of 1:1, and immerse the cell in 1.0-2.0mol / L H 2 SO 4 Soak in the electrolyte for 2 hours, charge with a current of 0.05C, and make a lead-carbon battery. The manufactured battery has better high current performance.

Embodiment 2

[0013] Activated carbon, conductive agent, binding agent are mixed according to the following weight percentages, activated carbon 75%, conductive agent 20%, binding agent 5%, wherein conducting agent selects superconducting carbon for use, binding agent selects polytetrafluoroethylene ( PTFE) and sodium carboxymethylcellulose (CMC), add appropriate amount of deionized water, mix it into a paste, apply the mixed carbon paste evenly on the lead collector, and roll it with a rolling machine Molding, vacuum drying at 50°C, the negative electrode sheet is made, and the positive electrode uses PbO 2 For the positive electrode, wrap the positive electrode with a separator, choose a glass fiber separator as the separator, and form a cell according to the ratio of positive and negative electrodes of 1:1, and immerse the cell in 1.0-2.0mol / L H 2 SO 4 Soak in the electrolyte for 2 hours, charge with a current of 0.05C, and make a lead-carbon battery. Compared with Example 1, the pole ...

Embodiment 3

[0015] Mix activated carbon, conductive agent, and binder according to the following weight percentages, 90% of activated carbon, 8% of conductive agent, and 2% of binder, wherein the conductive agent is selected from superconducting carbon and acetylene black, and the binder is selected from polystyrene Tetrafluoroethylene (PTFE) and sodium carboxymethyl cellulose (CMC) are mixed, add an appropriate amount of deionized water, mix into a paste, apply the mixed carbon paste evenly on the lead collector, and use a rolling film machine for roll forming, and vacuum drying at 50°C to obtain the negative electrode sheet, and the positive electrode uses PbO 2 For the positive electrode, wrap the positive electrode with a separator, choose a glass fiber separator as the separator, and form a cell according to the ratio of positive and negative electrodes of 1:1, and immerse the cell in 1.0-2.0mol / L H 2 SO 4 Soak in the electrolyte for 2 hours, charge with a current of 0.05C, and make...

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PUM

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Abstract

The invention provides a new type of lead-carbon battery for electric vehicles. The positive pole is a PbO2 positive pole, and the negative pole is coated with a porous activated carbon material on the lead current collector. The composition and proportion (weight) of the porous activated carbon material are: activated carbon 55 ~95%, conductive agent 5~30%, binder 0.1~15%, the positive electrode is wrapped with a separator, and the negative electrode is immersed in the H2SO4 electrolyte with a concentration of 1.0~2.0mol / L. The lead-carbon battery of the present invention has the advantages of large capacity, long life and low price, especially its high-current and low-temperature performance, good charge acceptance, reduced lead consumption, and environmental friendliness, and is suitable for the use of electric vehicles that are increasingly developed Require.

Description

technical field [0001] The invention relates to a lead-acid storage battery for an electric vehicle, in particular to a lead-carbon battery negative electrode material for an electric vehicle. Background technique [0002] Due to the lack of oil resources, serious environmental pollution and the greenhouse effect, the whole world now believes that the development of traditional fuel vehicles is at the end of their battles. Vehicles with new power modes are constantly emerging, among which pure electric battery-powered vehicles and fuel-battery hybrid vehicles are developing the fastest. The batteries in hybrid vehicles are used as power and energy storage, which improves fuel efficiency and environmental friendliness . [0003] The key to the development of electric vehicles is the energy storage device - battery. Whether the energy storage device (battery) meets the requirements needs to consider indicators such as capacity, life, price, low temperature, and high current....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/14H01M4/38H01M4/62
CPCY02E60/126Y02E60/10
Inventor 凌付冬陆亚山张华杨丛利
Owner NANJING SHUANGDENG SCI TECH DEV RES INST
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