A low-temperature battery formation process

A low-temperature battery and process technology, applied in the direction of lead-acid batteries, lead-acid battery construction, sustainable manufacturing/processing, etc., can solve problems such as cost increase

Active Publication Date: 2021-06-08
TIANNENG GRP HENAN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the improvement of the negative electrode material has improved the low-temperature performance, the cost has increased a lot

Method used

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  • A low-temperature battery formation process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Before the battery is formed, it is necessary to make a semi-finished battery for backup: the positive and negative plates produced by lead powder ball milling, grid casting, lead powder paste, lead powder coating, and plate curing are separated by AGM glass fiber cotton. The capacity is assembled into a single lead-acid battery pack, and the positive and negative poles are connected in parallel. The cells are connected in series, and then sealed by the middle cover to obtain a semi-finished battery for backup.

[0066] Configure the masterbatch for backup:

[0067] Raw materials: select industrial grade silica powder produced by gas phase method, with an average particle size of 0.17µm, a silica content of over 99.89%, and a density of 50g / L after drying at 105°C for 2 hours, which is in a hydrophobic state;

[0068] Preparation equipment: the speed is adjustable from 4000 to 5000r / min, and the volume is 800kg;

[0069] Configuration method: Add 600kg of deionized wa...

Embodiment 2

[0103] Before the battery is formed, it is necessary to make a semi-finished battery for backup: the positive and negative plates produced by lead powder ball milling, grid casting, lead powder paste, lead powder coating, and plate curing are separated by AGM glass fiber cotton. The capacity is assembled into a single lead-acid battery pack, and the positive and negative poles are connected in parallel. The cells are connected in series, and then sealed by the middle cover to obtain a semi-finished battery for backup.

[0104] Configure the masterbatch for backup;

[0105] Raw materials: choose industrial grade silica powder produced by gas phase method, with an average particle size of 0.13µm, a silica content of 99.5%, and a density of 50g / L after drying at 105°C for 2 hours, which is in a hydrophobic state;

[0106] Preparation equipment: the speed is 4000 to 5000r / min, and the volume is 800kg;

[0107] Configuration method: add 600kg deionized water into the equipment, t...

Embodiment 3

[0142] Before the battery is formed, it is necessary to make a semi-finished battery for backup: the positive and negative plates produced by lead powder ball milling, grid casting, lead powder paste, lead powder coating, and plate curing are separated by AGM glass fiber cotton. The capacity is assembled into a single lead-acid battery pack, and the positive and negative poles are connected in parallel. The cells are connected in series, and then sealed by the middle cover to obtain a semi-finished battery for backup.

[0143] Configure the masterbatch for backup;

[0144] Raw materials: select industrial grade silica powder produced by gas phase method, with an average particle size of 0.2µm and a silica content of 99.99%, after drying at 105°C for 2 hours, the density is 50g / L, which is in a hydrophobic state;

[0145] Preparation equipment: the speed is 4000 to 5000r / min, and the volume is 800kg;

[0146] Configuration method: add 600kg deionized water into the equipment,...

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Abstract

The invention discloses a low-temperature battery formation process. The battery formation process of the invention achieves the purpose of saving cost, reducing battery weight, and improving low-temperature performance of the battery by adjusting the formation process and material preparation process. The charging process used It has the ability to determine the current according to the area of ​​the product to be formed, determine the charge and discharge capacity according to the amount of active material, and always use the hydrogen evolution voltage as the control point to ensure the porosity of the negative electrode of the battery to a greater extent. Compared with other charging processes determined according to the charging time It is more scientific and reasonable, so the product produced by the technical solution of this application has the characteristics of high stability and high consistency, which is mainly reflected in key indicators such as product life and specific energy. The present invention mainly uses the constant temperature effect in the formation stage, and the battery temperature is always controlled between 20 and 45°C. Under this temperature state, the utilization rate of the charging current is the highest, and the materials in the plate will not be oxidized, and the low-temperature capacity of the produced battery is high. , Long life characteristics.

Description

technical field [0001] The invention belongs to the technical field of lead-acid battery production, and in particular relates to a low-temperature battery formation process. Background technique [0002] As the secondary battery with the highest safety factor, lead-acid battery can be seen everywhere in our daily life, and the reason why this product has been enduring for more than 150 years is that the material of this product can be recycled, so the price is lower low. Due to the relationship between the electrolyte system of lead-acid batteries, when the ambient temperature is high, the battery performance is excellent, which is reflected in the long discharge time and short charge time. On the contrary, the discharge time is short, the charged power is reduced, and the discharge capacity is lower due to the reduced charge. That is to say, in a low-temperature environment, if the low-temperature capacity of the lead-acid battery fails to meet the national standard requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/12H01M10/10
CPCH01M10/10H01M10/12Y02E60/10Y02P70/50
Inventor 欧阳万忠王强民庞明朵赵兴强
Owner TIANNENG GRP HENAN ENERGY TECH
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