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Control method and system for charging high voltage battery of vehicle

A high-voltage battery and control method technology, which is applied in battery/fuel cell control devices, secondary battery charging/discharging, battery circuit devices, etc. cost reduction effect

Pending Publication Date: 2017-06-09
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, the auxiliary battery is used to charge the high-voltage battery, and the durability of the LDC deteriorates

Method used

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  • Control method and system for charging high voltage battery of vehicle
  • Control method and system for charging high voltage battery of vehicle

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Embodiment Construction

[0032] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0033] Such as figure 1 and figure 2 As shown, the control method for charging the high voltage battery of a vehicle according to the present invention includes: sensing the state of charge (SOC) of the high voltage battery 10 by the vehicle controller 40 ( S10 ). The vehicle controller 40 then compares the sensed SOC of the high voltage battery 10 with the minimum reference SOC (S20). When the sensed SOC of the high voltage battery 10 is less than the minimum reference SOC, the vehicle controller 40 sets a condition for the low voltage DC-DC converter (LDC) 30 to charge the high voltage battery 10 using the auxiliary battery 20 (S30). The vehicle controller 40 charges the high voltage battery 10 using the LDC 30 (S40). The vehicle controller 40 senses state information of the LDC 30 including current and temperature of the LDC 30 while charging the high vol...

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PUM

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Abstract

The invention provides a control method and a system for charging high voltage battery of a vehicle. The control method for charging a high voltage battery of a vehicle includes charging, by a vehicle controller, the high voltage battery using a low voltage DC-DC converter The state information. of the low voltage DC-DC converter, which includes the current and the temperature of the low voltage DC-DC converter, is sensed by the vehicle controller while charging the high voltage battery. The charging current of the high voltage battery is derated by the vehicle controller when the sensed state information of the low voltage DC-DC converter satisfies a converter derating condition.

Description

technical field [0001] The present invention relates to a control method for charging a high voltage battery of a vehicle capable of preventing durability degradation of an auxiliary battery and a low voltage DC-DC converter when the auxiliary battery is used to charge the high voltage battery. Background technique [0002] Electric vehicles are actively researched and developed due to their potential as an alternative for solving vehicle pollution and energy problems. [0003] These electric vehicles are powered by using battery power to drive an AC or DC electric motor. Electric vehicles can be classified into battery electric vehicles and hybrid electric vehicles. A battery electric vehicle uses battery power to drive an electric motor and recharge the battery when it is depleted. A hybrid electric vehicle uses electricity generated by driving an engine to charge a battery, and uses electricity to drive an electric motor to drive the vehicle. [0004] Generally, a syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH02J7/0027H01M10/44H02J7/342B60L58/12B60L58/21B60L58/20B60L2210/12H02J7/007184H02J7/00718H02J2310/48H02J7/00712Y02T10/70Y02T10/72Y02E60/10
Inventor 金志宪李浩仲崔远景朴骏渊
Owner HYUNDAI MOTOR CO LTD