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Low-temperature battery formation process

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

Active Publication Date: 2020-01-07
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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Examples

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 deionized water...

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

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

[0107] Configuration method: add 600kg deionize...

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 0.2 μm and a silica content of more than 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 adjustable from 4000 to 5000r / min, and the volume is 800kg;

[0146] Configuration method: add 600kg deionize...

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Abstract

The invention discloses a low-temperature battery formation process. The battery formation process is characterized in that cost is saved by adjusting the formation process and the material preparation process, battery weight can be further reduced, low-temperature performance of the battery is improved, the charging process has the advantage that the current is fixed according to the area of a to-be-formed product, the charging and discharging amounts are determined according to the mass of active matters, a hydrogen evolution voltage is always utilized as a control key point, porosity of a negative electrode of the battery is ensured to a greater extent, and the charging process is more scientific and reasonable than other charging processes determined according to the charging time, sothe product produced by the technical scheme has characteristics of high stability and high consistency and is mainly reflected in key indexes such as product service life and specific energy. The battery formation process is advantaged in that the constant temperature effect is mainly adopted in the formation stage, the temperature of the battery is constantly controlled between 20 DEG C and 45 DEG C, in the temperature state, the charging current utilization rate is the highest, materials in a polar plate cannot be oxidized, and then the produced battery further has characteristics of high low-temperature capacity and long service life.

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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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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