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System and method for low-temperature charging management of electric vehicle

A battery management system and charging management technology, used in electric vehicle charging technology, electric vehicles, charging stations, etc., can solve problems such as loss of battery life and over-discharge of cells, reduce energy loss, protect batteries, and improve low temperature. The effect of charging speed

Inactive Publication Date: 2020-04-28
HOZON NEW ENERGY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, too long charging time is still unavoidable, and even in order to heat the battery cells quickly, the battery cells are over-discharged and the problem of battery life loss is prominent.

Method used

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  • System and method for low-temperature charging management of electric vehicle
  • System and method for low-temperature charging management of electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a low-temperature charging management system for electric vehicles, such as figure 1 shown, including:

[0040] The temperature acquisition module 11 is used to acquire battery temperature and charging pile power in real time;

[0041] A comparison module 12, configured to compare the acquired battery temperature with a temperature threshold;

[0042] The allocation module 13 is used to allocate the battery temperature and the power of the charging pile to the high-voltage accessories according to the result of the comparison.

[0043] In this embodiment, the battery temperature in the temperature acquisition module 11 is acquired through the battery management system; the real-time acquisition of the battery temperature and charging pile power is acquired through the energy management system.

[0044] The energy management system receives the charging current, charging voltage, maximum allowable charging current and battery fault information ...

Embodiment 2

[0056] This embodiment provides a low-temperature charging management method for an electric vehicle, such as figure 2 shown, including steps:

[0057] S11. Obtain battery temperature and charging pile power in real time;

[0058] S12. Comparing the acquired battery temperature with a temperature threshold;

[0059] S13. According to the comparison results, the battery temperature and charging pile power are assigned priority to the high-voltage accessories.

[0060] In this embodiment, the battery temperature in step S11 is collected through the battery management system; the real-time acquisition of the battery temperature and charging pile power is obtained through the energy management system.

[0061] The energy management system receives the charging current, charging voltage, maximum allowable charging current and battery fault information from the battery management system, and simultaneously calculates the power of the high-voltage accessories. The high-voltage acc...

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Abstract

The invention discloses a system and a method for low-temperature charging management of an electric automobile. The system for low-temperature charging management of the electric vehicle comprises atemperature obtaining module which is used for obtaining the temperature of a battery and the power of a charging pile in real time, a comparison module which is used for comparing the acquired battery temperature with a temperature threshold value, and a distribution module which is used for performing priority distribution on high-voltage accessories according to the comparison result and the battery temperature and the charging pile power. The low-temperature charging speed is increased, and the battery is protected.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a low-temperature charging management system and method for electric vehicles. Background technique [0002] The global concern about the future energy crisis and the increasing awareness of environmental protection in various countries have promoted the rapid development of the new energy vehicle industry. Electric vehicles have been more and more widely used. China's electric vehicles have also ushered in an explosive growth in recent years. With the growth of electric vehicles, electric vehicles have been applied on a large scale in many fields such as public transportation, rental, logistics, and passenger vehicles. [0003] The more applications of a new thing, the more problems it will create, and electric vehicles are no exception. Despite the vigorous development of electric vehicles, the bottleneck restricting the development of electric vehicles has not been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/24B60L58/27B60L58/12B60L53/62B60H1/22
CPCB60H1/2215B60L53/62B60L58/12B60L58/24B60L58/27Y02T10/70Y02T10/7072Y02T90/12
Inventor 崔挺
Owner HOZON NEW ENERGY AUTOMOBILE CO LTD
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