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12V low-voltage electrical system AGM manufacturing process for BEV and battery

A low-voltage electrical and manufacturing process technology, applied in the field of low-voltage electrical system manufacturing of pure electric new energy vehicles, to achieve the effects of reducing positive side reactions, increasing oxygen absorption overpotential, and reducing size

Inactive Publication Date: 2021-06-01
ZHEJIANG NARADA POWER SOURCE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The deep discharge cycle life of the AGM battery produced by this design and manufacturing process in the partial charge state at high temperature and the low-temperature cold start performance after long-term storage solve the problem of the existing 12V low-voltage electrical system AGM battery for BEV pure electric vehicles. Key technical issues, with great value for technology improvement and production promotion

Method used

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  • 12V low-voltage electrical system AGM manufacturing process for BEV and battery
  • 12V low-voltage electrical system AGM manufacturing process for BEV and battery
  • 12V low-voltage electrical system AGM manufacturing process for BEV and battery

Examples

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Effect test

Embodiment 1

[0036] (1) Prepare the Pb-Ca-Sn-Al-Ce alloy, wherein the amount of Ce added is 500ppm-1000ppm, the molten lead liquid of the alloy is injected into the cavity through a spray mold, and the lead strip adopts a low rolling ratio cold pressing forming process, after After cold pressing, the thickness of the lead strip is 0.9mm, the thickness of the negative lead strip is 0.7mm, and it is aged at 75°C for 2 days;

[0037] (2) The lead belt in the step (1) is continuously punched and formed into a grid current collector through a continuous punching type radioactive punching die, and is rolled up for use; wherein the quality control of ten consecutive sheets of positive grid is 490g; ten consecutive sheets of negative grid Quality control is 395g

[0038] (3) Add 500ppm rare earth oxide additive zirconium trioxide and 1500ppm stannous sulfate to the positive lead paste formula (the percentages are all relative to the amount of lead powder), and the apparent density of the lead past...

Embodiment 2

[0044] (1) Prepare the Pb-Ca-Sn-Al-Ce alloy, wherein the amount of Ce added is 500ppm-1000ppm, the molten lead liquid of the alloy is injected into the cavity through a spray mold, and the lead strip adopts a low rolling ratio cold pressing forming process, after After cold pressing, the thickness of the positive electrode lead strip is 0.95mm, the thickness of the negative electrode lead strip is 0.75mm, and aging at 100°C for 2 days;

[0045] (2) the lead belt in the step (1) is formed into a grid current collector by continuous stamping through a continuous punching type radioactive die, and is rolled up for use;

[0046] (3) Add 600ppm rare earth oxide additive zirconium trioxide and 1600ppm stannous sulfate to the positive electrode paste formula, and control the apparent density of the lead paste to 4.42g / mL; add 2000ppm Orilon N134 carbon black and 2000ppm Pauli to the negative electrode paste Pueraria lignin UP393 is used in the preparation of negative electrode paste;...

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Abstract

The invention belongs to the technical field of pure electric new energy vehicle low-voltage electrical system manufacturing, and particularly relates to a 12V low-voltage electrical system AGM battery manufacturing process for a BEV and a battery. The manufacturing process comprises the steps of lead belt manufacturing, polar plate forming and lead paste preparing and smearing, wherein the apparent density of positive electrode lead paste is controlled to be 4.3-4.5 g / mL, and the apparent density of negative electrode lead paste is controlled to be 4.2-4.4 g / mL; then the polar plate is put into an adjustable curing chamber for polar plate curing and drying, the temperature of the curing chamber is controlled to be 50-70 DEG C, the relative humidity is controlled to be 100%-20%, and the curing time is 72-80 h; the positive electrode is encapsulated by adopting a high-porosity and high-resilience AGM partition plate, the rough surface faces the negative electrode, all positive and negative electrode tabs in the electrode group are compressed into a groove after being subjected to cast welding and parallel connection, and finally an acid adding process is carried out. The AGM battery produced by adopting the process has deep discharge cycle life in a partial charge state at a high temperature state and low-temperature cold start performance after long-term storage, and the key technical problem of a 12V low-voltage electrical system AGM battery for an existing BEV pure electric vehicle is solved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing a low-voltage electrical system of a pure electric new energy vehicle, and specifically relates to a 12V low-voltage electrical system AGM battery manufacturing process and battery for a BEV vehicle. Background technique [0002] BEV pure electric vehicles have many unique structural components, including drive system, on-board 12V power supply system and external charging system. The car's 12V power supply independently carries car loads, such as car audio, entertainment system, car heated seat cushion, driving recorder, electric power steering system, electric heating power supply, etc., and the battery discharge depth will reach more than 15%. Under such working conditions, traditional SLI batteries do not have the advantages of AGM batteries, especially for subtropical and tropical regions such as North America, Africa, etc., requiring the limit temperature of the vehicle 12V power suppl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/14H01M4/20H01M4/62H01M4/04H01M4/22H01M4/57H01M50/46H01M10/06H01M10/12
CPCH01M10/12H01M10/06H01M4/628H01M4/57H01M4/20H01M4/14H01M4/0435H01M4/22H01M4/62H01M2220/20H01M2004/028Y02P70/50Y02E60/10
Inventor 柳锐张亮艾芃朱文乐张启鸣熊正林
Owner ZHEJIANG NARADA POWER SOURCE CO LTD
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