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Pure electric vehicle storage battery intelligent power supply management method and system

A pure electric vehicle and intelligent power supply technology, which is applied in the field of intelligent power supply management of pure electric vehicle batteries, can solve the problems of untimely replenishment of vehicle batteries, achieve the effects of ensuring power, increasing costs, and ensuring the safety of personnel and vehicles

Pending Publication Date: 2020-07-28
CHERY COMML VEHICLE ANHUI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for intelligent power management of the on-board storage battery, aiming to solve the problem of the untimely replenishment of the on-board storage battery in the prior art

Method used

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  • Pure electric vehicle storage battery intelligent power supply management method and system
  • Pure electric vehicle storage battery intelligent power supply management method and system

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Embodiment Construction

[0027] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0028] Such as figure 1 As shown, a pure electric vehicle battery intelligent power management system includes a power battery, a DCDC converter, a power system management module (hereinafter referred to as BMS), a vehicle controller (hereinafter referred to as VCU), a vehicle battery, and a vehicle body controller ( Hereinafter referred to as BCM).

[0029] The input end of the battery is connected to a DCDC converter, and the output end is connected to other controllers on the electric vehicle: VCU, BMS, and BCM. Each controller is connected to the CAN network for mutual communication, and each controller has network management functions.

[0030] The DCDC converter converts the high-voltage direct current of the power battery into a low-voltage direct current and outputs it to the vehic...

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Abstract

The invention discloses a pure electric vehicle storage battery intelligent power supply management method which comprises the steps that after a whole vehicle is powered off and sleeps, a BMS is automatically awakened at regular time and awakens a whole vehicle network, whether the charging condition of a vehicle-mounted storage battery is met or not at the moment is judged, and if yes, a charging request is sent to a VCU; after the VCU receives the charging request, whether the vehicle door state, the power battery SOC value and the vehicle fault state meet the charging condition or not is judged, and if yes, the charging process is executed; in the charging process, the VCU sends a control instruction to a DCDC converter to enable the DCDC converter to enter a working state and sends acharging control instruction to the BMS, and the BMS controls a relay connected between the power battery and the DCDC converter in series to be closed. When the vehicle is in a non-Ready gear state,the BMS can be started at regular time to complete charging of the vehicle-mounted storage battery, the electric quantity of the vehicle-mounted storage battery is ensured, and the defect that the vehicle-mounted storage battery cannot be started due to power shortage caused by long-time non-starting and long-time parking is avoided.

Description

technical field [0001] The invention relates to the field of electric vehicle power supply management, in particular to an intelligent power supply management method and system for a pure electric vehicle storage battery. Background technique [0002] As the only energy source for low-voltage accessories and controllers of pure electric vehicles, on-board batteries are very important for electric vehicles. However, when the car is parked for a long time or the car is in the non-Ready state for a long time, the 12V battery will have self-discharge and static power consumption, which will cause the battery to lose power, which will eventually lead to the problems that the vehicle cannot be started and the service life of the battery will be shortened. The main disadvantages of the prior art are: [0003] 1) The DCDC will only work to charge the vehicle battery in the Ready gear, and will not work in the OFF, ACC, and ON gears, so the power of the vehicle battery may not be re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02B60R16/033B60L3/00
CPCB60R16/02B60R16/033B60L3/00
Inventor 朱甲甲周定华徐鹏刘昭才李涛杨恢威张克俭范田玉孙朋程刘养珂
Owner CHERY COMML VEHICLE ANHUI
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