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Method for preparing lead-acid battery lead paste

A technology of lead-acid battery and lead paste, which is applied in the direction of lead-acid battery electrodes, battery electrodes, circuits, etc. It can solve the problems of softening, falling off, and no shearing force of the active material of the lead paste, so as to improve dry mixing. Efficiency, efficiency improvement, effect of fiberization degree improvement

Inactive Publication Date: 2020-02-11
卢云峰
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  • Abstract
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  • Claims
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Problems solved by technology

[0002] The traditional lead-acid battery lead paste preparation method is to prepare lead paste that meets the filling and coating requirements through steps such as mixing, adding water, adding acid, and acid scouring in a paste machine according to a certain ratio of lead powder, pure water, dilute sulfuric acid, and additives. Generally, the mixing process takes 40 to 45 minutes, and the traditional mixing process has no shear force, which cannot fibrillate the additive polytetrafluoroethylene in the lead paste, and cannot increase the inorganic skeleton structure in the lead paste Thereby reducing the effect of softening and shedding of the active substance, see image 3 , therefore, an improved technology is urgently needed to solve this problem existing in the prior art

Method used

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  • Method for preparing lead-acid battery lead paste
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  • Method for preparing lead-acid battery lead paste

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preparation example Construction

[0029] Please refer to figure 1 , the present invention provides a technical solution: a method for preparing lead-acid battery lead paste, including a positive electrode paste and paste method and a negative electrode paste and paste method, characterized in that: the formula of the positive lead paste: lead powder as the main raw material , polytetrafluoroethylene, red lead, anisotropic graphite, antimony trioxide, etc. as additives; the formula of negative lead paste: lead powder as the main raw material, polytetrafluoroethylene, lignin, acetylene black, barium sulfate, etc. additive.

[0030] Positive lead paste and paste steps are as follows:

[0031] S1, dry mixing, put lead powder, red lead, anisotropic graphite, antimony trioxide and other raw materials into a conical high-speed mixer for mixing, stirring speed 500~1000 rpm, stirring time 5~8 minutes;

[0032] S2, add acid, put the above mixed powder into the kneader, add the sulfuric acid solution using a sprayer, ...

Embodiment 1

[0046] Positive lead paste and paste steps are as follows:

[0047] S1, dry mixing, put 100 parts of lead powder, 5 parts of red lead, 0.2 parts of anisotropic graphite and 0.2 parts of antimony trioxide into a conical high-speed mixer for mixing, the stirring speed is 1000 rpm, and the stirring time is 5 minutes;

[0048] S2, add acid, put the above mixed powder into the kneader, use a sprayer to add 1.14g / cm 3 22 parts of sulfuric acid solution, kneading while adding, the kneading speed is 40 rpm, and the sulfuric acid solution is added within 5 minutes;

[0049] S3, acid refining, continue kneading for 10 minutes after adding the sulfuric acid solution, the kneading speed is 40 rpm;

[0050] S4, adding glue, using a sprayer to add 0.8 parts of 60% polytetrafluoroethylene emulsion, kneading while adding, the kneading speed is 20 rpm, and the polytetrafluoroethylene emulsion is added within 2 minutes;

[0051] S5, kneading, continue kneading for 2 minutes, kneading speed 20...

Embodiment 2

[0062] Positive lead paste and paste steps are as follows:

[0063] S1, dry mixing, put 100 parts of lead powder, 5 parts of red lead, 0.2 part of anisotropic graphite and 0.2 part of antimony trioxide into a conical high-speed mixer and mix at a stirring speed of 800 rpm for 5 minutes;

[0064] S2, add acid, put the above mixed powder into the kneader, use a sprayer to add 1.14g / cm 3 22 parts of sulfuric acid solution, kneading while adding, the kneading speed is 40 rpm, and the sulfuric acid solution is added within 5 minutes;

[0065] S3, acid refining, continue kneading for 10 minutes after adding the sulfuric acid solution, the kneading speed is 40 rpm;

[0066] S4, adding glue, using a sprayer to add 2 parts of 60% polytetrafluoroethylene emulsion, kneading while adding, the kneading speed is 20 rpm, and the polytetrafluoroethylene emulsion is added within 2 minutes;

[0067] S5, kneading, continue kneading for 2 minutes, kneading speed 20 rpm;

[0068] S6, dispensing...

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Abstract

The invention discloses a method for preparing lead-acid battery lead paste. The method includes a positive lead paste kneading method and a negative lead paste kneading method, each of which comprises the following steps: S1, dry mixing, S2, acid adding, S3, acid kneading, S4, emulsion adding, S5, kneading, S6, paste outputting. The method kneads the lead paste containing a polytetrafluoroethylene additive by a kneader to fully fiberize the polytetrafluoroethylene, provides an inorganic framework network for an electrode plate, reduces the softening and shedding of an active material, therebyimproving the charge acceptance capacity of the active material and prolonging the cycle life of the battery.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a preparation method for lead-acid battery paste, in particular to a preparation method for paste-type valve-controlled sealed lead-acid battery paste containing polytetrafluoroethylene additives. Background technique [0002] The traditional lead-acid battery lead paste preparation method is to prepare lead powder, pure water, dilute sulfuric acid and additives in a paste mixer according to a certain ratio, and prepare lead paste that meets the filling and coating requirements through steps such as mixing, adding water, adding acid, and acid scouring. Generally, the mixing process takes 40 to 45 minutes, and the traditional mixing process of the mixing machine has no shear force, which cannot fibrillate the additive polytetrafluoroethylene in the lead paste, and cannot increase the inorganic skeleton structure in the lead paste Thereby reducing the effect of softenin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/57H01M4/16
CPCH01M4/16H01M4/57Y02E60/10
Inventor 刘昌张永虎
Owner 卢云峰
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