Process for filling colloid into storage battery

A storage battery and glue filling technology, which is applied in battery components, secondary battery manufacturing, circuits, etc., can solve the problems of difficulty in controlling the uniformity of dispersion, low silica content, electrolyte gel, etc., and achieve fast filling process , the effect of improving performance

Active Publication Date: 2010-11-17
CHAOWEI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional direct perfusion method requires low silica content, and the electrolyte is easy to gel during the perfusion process, affecting battery capacity and uniformity
The method of acid fir

Method used

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  • Process for filling colloid into storage battery
  • Process for filling colloid into storage battery

Examples

Experimental program
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Embodiment Construction

[0018] Such as figure 1 As mentioned above, the battery glue filling process includes the following steps in sequence:

[0019] a) Heat exchange: heat exchange the colloidal electrolyte to a range of 0-45°C and then keep the temperature constant; and control the viscosity of the colloidal electrolyte within the range of 10-400000PC.

[0020] b) Shearing: shearing the colloidal electrolyte with a shearing machine; the shearing machine used includes a rotor and a stator arranged outside the rotor, and the stator is a stator with a grid. The relative movement between the rotor and the stator is used to shear the colloidal electrolyte, and the electrolyte is extruded from the grid gap of the stator to form a negative pressure inside the stator, so that the electrolyte can be sucked in from the bottom of the stator to realize continuous shearing of the colloidal electrolyte. The difference between the inner diameter of the stator and the outer diameter of the rotor is within the r...

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Abstract

The invention discloses a process for filling colloid into a storage battery. The process comprises the following steps of: a) exchanging heat, namely, performing heat exchange on a colloidal electrolyte until the temperature of the colloidal electrolyte is between 0 and 45 DEG C and preserving heat; b, shearing, namely, shearing the colloidal electrolyte by using a shearing machine; and c) vacuumizing and filling, namely, vacuumizing the storage battery for 1 to 5 times and filling the sheared colloidal electrolyte into the storage battery. The colloidal electrolyte is subjected to heat exchange until a preset temperature is reached and then sheared by a stator grid, the viscosity of the colloidal electrolyte is reduced to an appropriate colloid filling range and the sheared colloidal electrolyte is quantitatively filled into the storage battery through a vacuumizing system. The performance of the storage battery is improved, electrolyte stirring time is short and a filling process is rapid and convenient.

Description

【Technical field】 [0001] The invention relates to the perfusion of accumulator electrolytes, in particular to the perfusion process of colloidal electrolytes for colloidal batteries. 【Background technique】 [0002] At present, there are two main ways to pour the colloidal electrolyte of the battery into the battery. One is to mix and dilute silicon dioxide and sulfuric acid electrolyte to make a colloidal electrolyte and directly pour it into the battery, commonly known as the direct perfusion method; The sulfuric acid is added to the battery first, and then the silica hydrosol is added after some processing, commonly known as the acid first and then the glue method. The traditional direct perfusion method requires the electrolyte to gel for a long enough time, because it takes a long time to disperse silica with a stirrer, and the amount of colloidal electrolyte dispersed each time needs to be relatively large, enough to perfuse multiple batteries. The traditional direct p...

Claims

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Application Information

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IPC IPC(8): H01M2/36H01M10/04H01M50/609H01M50/618
CPCY02E60/10Y02P70/50
Inventor 沈浩宇郑欧刘孝伟陈体衔
Owner CHAOWEI POWER CO LTD
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