Management method and device for electric automobile low-tension battery

A low-voltage battery and electric vehicle technology, applied in electric vehicles, electric traction, vehicle energy storage, etc., can solve the problems of short service life and low-voltage batteries that cannot be automatically recharged

Active Publication Date: 2018-01-19
FJ MOTOR GRP YUDO NEW ENERGY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a low-voltage battery management method and devic

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  • Management method and device for electric automobile low-tension battery
  • Management method and device for electric automobile low-tension battery

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Embodiment Construction

[0025] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0026] like figure 1 and figure 2 As shown, the present invention provides a low-voltage battery management method for an electric vehicle, comprising the following steps: the power management system wakes up periodically; the wake-up power management system detects the voltage of the low-voltage battery to detect whether it needs to be recharged; if necessary, Then detect the mode of the electric vehicle; if it is the slow charging mode, start the on-board charger to supplement the low-voltage battery through the external power supply; if it is the driving mode, start the DCDC controller to control the power battery to supplement the low-voltage battery .

[0027] In this embodiment, when the electric vehicle is in a stationary state, ...

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Abstract

The invention discloses a management method and device for an electric automobile low-tension battery. The management method comprises steps that a power supply management system is regularly wakenedup; voltage detection is conducted to the low-tension battery by the wakened-up power supply management system and whether electricity supply is required is detected; if required, a mode of the electric automobile is detected; if the mode is a trickle-charge mode, a vehicle-mounted battery charger is started, so electricity can be supplied to the low-tension battery by the external power supply; if the mode is a driving mode, a DCDC controller is started and electricity is supplied to the low-tension battery by a power battery; through regular detection to the voltage of the low-tension battery, whether electricity supply is required can be determined according to a detection result; the low-tension battery of the electric automobile can be automatically powered and problems of low-tensionbattery damage and short service life due to long-time electricity shortage when electricity cannot be automatically supplied to the low-tension battery; different electricity supply modes are employed upon different modes; low-tension battery can be effectively protected; and service life of the low-tension battery can be prolonged.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a method and device for managing low-voltage batteries of electric vehicles. Background technique [0002] At present, environmental protection and energy issues are increasingly concerned. In order to cope with the environmental and energy crises, the development and large-scale use of electric vehicles has become an inevitable trend. With the development of intelligent electric vehicles, the relevant controllers are in a state of incomplete dormancy The number of solutions gradually increases, which leads to an increase in the risk of low-voltage battery power loss in the vehicle; the vehicle intelligence realizes the management of the low-voltage power supply battery in the state of vehicle wake-up, which cannot be guaranteed under long-term static conditions; as the power loss further deteriorates, it is easy to The low-voltage battery is completely damaged and the service li...

Claims

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Application Information

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IPC IPC(8): B60L11/18
CPCY02T10/70
Inventor 杨朋朋刘心文赵明刘艳宗福才
Owner FJ MOTOR GRP YUDO NEW ENERGY AUTOMOBILE CO LTD
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