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Power supply control method of electric automobile

A technology for power supply control and electric vehicles, which is applied in the direction of electric vehicles, electrical devices, vehicle components, etc., can solve the problems of long waiting time for electric vehicles to start, achieve the effect of shortening the power-on time and improving reliability

Active Publication Date: 2018-11-09
CH AUTO TECH CORP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the power-on time of the electric vehicle is the sum of the time-consuming of the two power-on processes, resulting in a longer waiting time for the electric vehicle to start.

Method used

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  • Power supply control method of electric automobile
  • Power supply control method of electric automobile
  • Power supply control method of electric automobile

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Embodiment Construction

[0047] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

[0048]figure 1 Schematic diagram of the power supply relationship architecture for an electric vehicle. See figure 1 , electric vehicles can include power battery Bat_HV, voltage converter DC / DC, low-voltage battery Bat_LV (such as 12V battery), and VBU (Vehicle and Battery control Unit, vehicle and battery control unit) and BCM (Body Control Module, body control module ).

[0049] The power battery Bat_HV is used as a high-voltage power supply, which can provide high-voltage power supply to the motor Mo used as a power drive component of the electric vehicle.

[0050] The voltage converter DC / DC can realize the voltage conversion between the high-voltage domain HV where th...

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Abstract

The invention discloses a power supply control method of an electric automobile. Based on the power supply control method, the states of a low-voltage power supply system and a high-voltage power supply system can be switched without being triggered by an event related to an ignition switch, and therefore power-on triggering without the ignition switch can be supported. The process that the high-voltage power supply system is switched to the preparation state reuses the triggering condition through which the low-voltage power supply system is switched to the start state so that synchronizationof switching of the high-voltage power supply system to the preparation state and switching of the low-voltage power supply system to the start state can be supported, and compared with the process that the low-voltage power supply system and the high-voltage power supply system are powered on in sequence, the power-on duration of the electric automobile can be shortened through the above synchronous switching. The power-off process similarly does not need to be triggered by the event related to the ignition switch. In addition, a low-voltage power supply emergency backup can be achieved in alow-voltage power source switching mode, so that the reliability of low-voltage power supply is improved.

Description

technical field [0001] The invention relates to the power supply technology of electric vehicles, in particular to a power supply control method of electric vehicles. Background technique [0002] The power-on of traditional electric vehicles usually needs to be triggered by the ignition switch. Moreover, the power-on of electric vehicles involves the power-on process of the low-voltage power supply system and the power-on process of the high-voltage power supply system, and these two power-on processes are performed in the order that the low-voltage power supply system is powered on first, and the high-voltage power supply system is powered on later. . As a result, the power-on time of the electric vehicle is the sum of the time consumption of the two power-on processes, resulting in a longer waiting time for the electric vehicle to start. Contents of the invention [0003] In one embodiment, a power supply control method of an electric vehicle is provided, which can tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L3/04
CPCB60L3/0084B60L3/04
Inventor 陆群付朝英王磊
Owner CH AUTO TECH CORP CO LTD
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