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Carbene-valve-controlled sealed lead-acid battery for electric forklift and production process thereof

A lead-acid battery, electric forklift technology, applied in lead-acid battery, lead-acid battery construction, battery and other directions, can solve the problems of reducing the electrochemical reaction area of ​​the electrode plate, heating the battery body, increasing the vulcanization of the electrode plate, etc., to achieve chemical activity and the effect of strong surface adsorption, slow capacity decay, and extended life

Inactive Publication Date: 2019-09-20
深圳中天烯源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most lead-acid batteries used in electric forklifts work under heavy load and long-term discharge, and cannot be charged in time. Excessive gas will be discharged from the exhaust valve for a long time and cause water loss. When exposed to the air, a layer of white hard crystals (that is, sulfation) is formed on the surface of the negative plate due to oxidation. The sulfation reduces the electrochemical reaction area of ​​the plate and reduces the capacity; at the same time, the sulfation causes the battery body to heat up. , The temperature rises faster, which further accelerates the loss of water, aggravates the vulcanization of the plate, forms a vicious circle, and causes the battery to be scrapped early

Method used

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  • Carbene-valve-controlled sealed lead-acid battery for electric forklift and production process thereof
  • Carbene-valve-controlled sealed lead-acid battery for electric forklift and production process thereof
  • Carbene-valve-controlled sealed lead-acid battery for electric forklift and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 (both positive and negative lead pastes are added with carbene material)

[0028] The utility model relates to a carbene valve-regulated sealed lead-acid battery for DF-450 electric forklift truck, which is composed of a plate-type positive plate, a plate-type negative plate, a separator, a battery tank, a battery cover and a sulfuric acid electrolyte.

[0029] The grids of the positive plate and the negative plate are all cast and formed by lead-calcium alloys with a calcium content of 0.08-0.12% and an aluminum content of 0.08-0.12%.

[0030] Lead powder index: oxidation degree 73%, dispersion degree 100 mesh sieve, acid absorption value 32.5g / kg, apparent density 1.45~1.65g / cm 3 .

[0031] Positive lead paste formula: positive lead paste formula: lead powder 100kg, short fiber 50g, pure water 7~9L, H 2 SO 4 Solution (50%, density 1.40kg / L) 5.72L, carbene material 3L (effective content 0.5%).

[0032] Hezheng lead paste procedure: add 3L of carbene mate...

Embodiment 2

[0038] Embodiment 2 (positive lead paste adds carbene material, negative electrode lead paste does not add carbene material)

[0039] The utility model relates to a carbene valve-regulated sealed lead-acid battery for DF-450 electric forklift truck, which is composed of a plate-type positive plate, a plate-type negative plate, a separator, a battery tank, a battery cover and a sulfuric acid electrolyte.

[0040] The grids of the positive plate and the negative plate are all cast and formed by lead-calcium alloys with a calcium content of 0.08-0.12% and an aluminum content of 0.08-0.12%.

[0041] Lead powder index: oxidation degree 73%, dispersion degree 100 mesh sieve, acid absorption value 32.5g / kg, apparent density 1.45~1.65g / cm 3 .

[0042] Positive lead paste formula: lead powder 100kg, short fiber 50g, pure water 7-9L, H 2 SO 4 Solution (50%, density 1.40kg / L) 5.72L, carbene material 3L (effective content 0.5%).

[0043] The procedure of Hezheng paste is the same as t...

Embodiment 3

[0047] Embodiment 3 (positive lead paste does not add carbene material, negative electrode lead paste adds carbene material)

[0048] The utility model relates to a carbene valve-regulated sealed lead-acid battery for DF-450 electric forklift truck, which is composed of a plate-type positive plate, a plate-type negative plate, a separator, a battery tank, a battery cover and a sulfuric acid electrolyte.

[0049] The grids of the positive plate and the negative plate are all cast and formed by lead-calcium alloys with a calcium content of 0.08-0.12% and an aluminum content of 0.08-0.12%.

[0050] Lead powder index: oxidation degree 73%, dispersion degree 100 mesh sieve, acid absorption value 32.5g / kg, apparent density 1.45~1.65g / cm 3 .

[0051] Positive lead paste formula: lead powder 100kg, short fiber 50g, pure water 10-12L, H 2 SO 4 Solution (50%, density 1.40kg / L) 5.72L.

[0052] The procedure of Hezheng paste is the same as that of Example 1.

[0053] Negative lead pa...

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Abstract

The invention discloses a carbene-valve-controlled sealed lead-acid battery for electric forklift and a production process thereof. The carbene-valve-controlled sealed lead-acid battery comprises a positive electrode plate, a negative electrode plate, a separating plate, a battery tank, a battery cover and a sulfuric acid electrolyte. The positive electrode plate and the negative electrode plate use a paste-coated plate structure, and the carbene material is added into the positive electrode lead paste or the negative electrode lead paste or the positive and negative electrode lead paste. The single-layer and multi-layer graphene-carbene materials have excellent size effect, surface effect, super conductivity and adsorption capacity. The material is added into the plate to greatly increase the electrochemical reaction surface area of the plate and increase the porosity of the plate and the ability of absorbing water and acid. The carbene material enhances the conversion rate of electrochemical energy, decreases the internal resistance, increases the charge-discharge efficiency, increases the storage battery capacity and decreases the self-discharge rate of the electrode plate. The carbene material forms the active substance base nucleus in the electrode plate so as to suppressing the formation of the coarse PbSO4 crystal, suppress the "sulfation" of the electrode plate, alleviate the decay rate of the storage battery capacity and prolong the service life of the storage battery.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a carbene valve-controlled sealed lead-acid battery for electric forklifts. Background technique [0002] At present, all lead-acid batteries used in electric forklifts in China and other countries around the world are tubular lead-acid batteries with a positive plate as a tubular structure and a negative plate as a plate structure, and most of them have always adopted an open structure. Although the tubular lead-acid battery has the characteristics of good deep discharge performance and long life, it is more suitable for traction power supply. However, the open lead-acid battery has a fatal problem, which is serious environmental pollution and poor environmental protection, which is very inconsistent with the country's industry policy of vigorously developing fully sealed lead-acid batteries. In recent years, although lead-acid batteries for colloidal-sealed electri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M10/12
CPCH01M4/62H01M4/625H01M4/628H01M10/121H01M2220/20Y02E60/10Y02P70/50
Inventor 艾保忠姜涛
Owner 深圳中天烯源科技有限公司
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