Charging method of low-voltage storage battery under static mode of electric vehicles

A low-voltage storage battery and electric vehicle technology, which is applied to electric vehicles, secondary battery charging/discharging, secondary batteries, etc., can solve the problems of increased weight and volume, low battery energy density, increased capacity, etc., to achieve lower requirements and good performance Economic and social benefits, cost reduction and quality effects

Inactive Publication Date: 2017-06-13
EASTONE AUTOMOTIVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, lead-acid batteries are generally used as low-voltage batteries. This kind of battery has low energy density, and...

Method used

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  • Charging method of low-voltage storage battery under static mode of electric vehicles
  • Charging method of low-voltage storage battery under static mode of electric vehicles
  • Charging method of low-voltage storage battery under static mode of electric vehicles

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Embodiment Construction

[0020] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0021] figure 1 It is a flow chart of the implementation steps of the charging method for the low-voltage storage battery in the static mode of the electric vehicle, including seven steps.

[0022] Step 101: Under the static working condition, the battery management system automatically wakes up from the sleep state. Self-awakening of the battery management system is a prerequisite step for implementing the method for charging the low-voltage battery in the stationary mode of the electric vehicle. Only after the battery management system wakes up can other steps be implemented. In particular, after step 101 is executed, step 102 and step 106 will be executed simultaneously subsequently.

[0023] Specifically, the content included in the self-wake-up of the battery management system will be determined by figure 2 Details.

[0024] Step 102: Th...

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Abstract

The invention discloses a charging method of a low-voltage storage battery under the static mode of electric vehicles. In static condition of the vehicles, a battery management system wakes and detects low-voltage storage battery voltage automatically, and carrying capacity of the low-voltage storage battery is calculated through the low-voltage storage battery voltage; if the charging capacity calculated is lower than a set value, the battery management system controls a direct-current to direct-current converter, and the low-voltage storage battery is charged through a power battery pack; if the charging capacity calculated is higher than an internal set value of the battery management system or is not satisfied under other charging conditions or charging is completed or abnormity occurs, the battery management system controls the direct-current to direct-current converter and the battery management system to enter hibernation. In the static condition of the vehicles, the low-voltage storage battery is charged by the aid of the low-voltage storage battery system, vehicle cost is lowered, static time of the vehicles is prolonged, usage experience of the electric vehicles is improved, and good economic and social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a charging method for a low-voltage storage battery in a stationary mode of the electric vehicle. Background technique [0002] With the development of science and technology and the improvement of people's living standards, automobiles have become a daily means of transportation for people. In order to reduce energy consumption and air pollution, people have developed electric vehicles. Electric vehicles are generally equipped with two battery systems, one is the power battery system, and the other is the low-voltage auxiliary battery system. The power battery system mainly provides energy for the driving of the vehicle and has a high storage energy. The low-voltage auxiliary power supply system mainly provides power for vehicle low-voltage systems such as vehicle controllers, audio-visual entertainment systems and vehicle accessories. The low-voltage system of the v...

Claims

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Application Information

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IPC IPC(8): B60L1/00H01M10/44
CPCB60L1/00B60L2240/547H01M10/446Y02E60/10
Inventor 盛祥政沈成宇郭海涛徐胜钰李峰
Owner EASTONE AUTOMOTIVE TECH
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