Lead paste formula of energy storing accumulator and preparation method thereof

A storage battery and formula technology, which is applied in the direction of lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the problems of poor over-discharge resistance and charge acceptance, and achieve the effect of meeting performance requirements, high cycle life, and high initial capacity

CN101887971AInactive Publication Date: 2010-11-17张天任
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2010-11-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a lead paste formula of energy storing accumulators. An anode lead paste formula comprises the following raw materials of 6.5wt% to 8wt% of dilute sulphuric acid, 10wt% to 11wt% of deionized water, 15wt% to 30wt% of red lead, 0.1wt% to 0.3wt% of aquadag, 0.08wt% to 0.25wt% of stannous sulfate, 0.06wt% to 0.10wt% of polyester staple fiber and the balance of lead powder; and a cathode lead paste formula comprises the following raw materials of 7.5wt% to 8.5wt% of dilute sulphuric acid, 9wt% to 10wt% of deionized water, 0.5wt% to 0.8wt% of barium sulfate, 0.15wt% to 0.25wt% of acetylene carbon black, 0.30wt% to 0.40wt% of humic acid, 0.06wt% to 0.10wt% of polyester staple fiber and the balance of lead powder. After being made into accumulators, the lead paste prepared by the formula and the preparation method thereof has high initial capacity and cycle life, has high overdischarge resistant performance and charging accepting capability far higher than standard requirements, and can fully meet requirements for performance of the energy storing accumulators.
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Description

technical field

[0001] The invention relates to an energy storage battery, in particular to a lead paste formula for an energy storage battery and a preparation method thereof. Background technique

[0002] Energy storage batteries are the core components used in new energy fields such as solar energy and wind energy. The performance and quality of batteries are directly related to the normal operation of the system, while the performance and quality of batteries are mainly affected by the formula of lead paste. At present, domestic energy storage battery lead paste formulas are different, most of which directly borrow the formula of ordinary valve-regulated lead-acid batteries. Due to the difference in the use requirements of ordinary valve-regulated batteries and energy storage batteries, the formula of ordinary valve-regulated batteries cannot solve the battery over-discharge resistance The problem of poor performance and charge acceptance, and it is not suitable for batt...

Examples

Embodiment 1

[0018] In this embodiment, the positive electrode paste formula is composed of the following raw materials by weight percentage:

[0019] Take 7% of dilute sulfuric acid, 10% of deionized water, 18% of red lead, 0.1% of colloidal graphite, 0.1% of stannous sulfate, 0.07% of polyester staple fiber, and the rest is lead powder.

[0020] Prepare as follows:

[0021] Mix the red lead, colloidal graphite, stannous sulfate and short polyester fibers together, then add them into the paste mixing machine together with lead powder, start stirring for 7 minutes, then add water evenly in 3 minutes, continue stirring for 5 minutes, Add dilute sulfuric acid evenly within 1 minute. While adding dilute sulfuric acid, turn on the inlet fan and circulating cooling water of the paste machine, and control the temperature at 50°C. After adding dilute sulfuric acid, continue stirring for 11 minutes to produce paste. The paste temperature is 44°C. about.

Embodiment 2

[0023] Take 7.5% of dilute sulfuric acid, 10.5% of deionized water, 23% of red lead, 0.2% of colloidal graphite, 0.15% of stannous sulfate, 0.08% of polyester staple fiber, and the rest is lead powder.

[0024] All the other implementations are as in Example 1.

Embodiment 3

[0026] Get 8% of dilute sulfuric acid, 11% of deionized water, 28% of red lead, 0.3% of colloidal graphite, 0.22% of stannous sulfate, 0.09% of polyester staple fiber, and the rest is lead powder.

[0027] All the other implementations are as in Example 1.