Battery electric vehicle charging method and unit

A pure electric vehicle and charging method technology, applied in the field of electric vehicle power management, can solve the problems of inability to charge and start, and achieve the effect of avoiding the inability to start or be unable to be charged

Inactive Publication Date: 2018-01-16
CH AUTO TECH CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This application provides a pure electric vehicle charging method and unit, so as to avoid the problem that the pure electric vehicle cannot be started or cannot be charged after being placed for a long time

Method used

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  • Battery electric vehicle charging method and unit
  • Battery electric vehicle charging method and unit
  • Battery electric vehicle charging method and unit

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] figure 1 It is a flow chart of a pure electric vehicle charging method provided in an embodiment of the present application, and its specific steps are as follows:

[0037] Step 101: When the pure electric vehicle is in a dormant state, the VCU (Vehicle Control Unit, vehicle control unit) of the pure electric vehicle determines that the remaining power of the 12V storage battery of the pure electric vehicle is less than a first preset value.

[0038] The first preset value may be any value between 15% and 20% of the rated power.

[0039] Step 102: The VCU judges whether the remaining power of the power battery of the pure electric vehicle is greater than the second preset value, and if so, sends an intelligent charging command to the BMS (Battery Management System, battery management system), so that: the BMS controls the main...

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PUM

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Abstract

The application provides a battery electric vehicle charging method and unit. The method includes the following steps: when a battery electric vehicle is in a dormant state, if the VCU (Vehicle Control Unit) of the battery electric vehicle determines that the remaining capacity of the 12V battery is smaller than a first preset value, whether the remaining capacity of the power battery of the battery electric vehicle is greater than a second preset value is determined; and if the remaining capacity of the power battery of the battery electric vehicle is greater than the second preset value, anintelligent charging instruction is sent to the battery management system BMS so that the BMS can make the main relay pulled in to switch on the power battery and the power battery can charge the 12Vbattery through a DC-DC module. It is ensured that the 12V battery of a battery electric vehicle will not run out of power before the power battery, and the situation in which a battery electric vehicle cannot be started or charged is avoided.

Description

technical field [0001] The invention relates to the technical field of electric vehicle power management, in particular to a pure electric vehicle charging method and unit. Background technique [0002] For traditional cars, the 12V battery is a very important part. Many car owners have encountered the situation that the 12V battery is exhausted and cannot start the car. This is especially true for pure electric vehicles. Moreover, with the development of modern automobiles, the number of various controllers continues to increase, which makes the power consumption of 12V batteries continue to accelerate. For pure electric vehicles, when the 12V batteries are exhausted, high-voltage charging cannot even be performed. Contents of the invention [0003] The application provides a pure electric vehicle charging method and unit, so as to avoid the problem that the pure electric vehicle cannot be started or cannot be charged after being placed for a long time. [0004] Technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/02
Inventor 陆群杨池英胡兴煜辛春
Owner CH AUTO TECH CORP CO LTD
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