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Method and system for controlling vehicular direct current converter

A technology of DC converter and controller, which is applied in the direction of electric braking system, control device, converter type, etc., can solve the problems of auxiliary battery loss, reduce fuel efficiency, and consume man-hours, so as to reduce M/H and improve fuel consumption. Efficiency, effect of preventing deterioration

Pending Publication Date: 2018-12-14
HYUNDAI MOTOR CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In conventional technology, the charge and discharge efficiency of the auxiliary battery will not be 100%, therefore, the charge and discharge current of the auxiliary battery will inevitably bring losses, thereby reducing fuel efficiency
In addition, for the SOC maintenance and discharge control of the auxiliary battery, the traditional technology needs to perform command voltage mapping and calibration according to the SOC and temperature, which consumes a lot of man-hours (M / H)

Method used

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  • Method and system for controlling vehicular direct current converter
  • Method and system for controlling vehicular direct current converter
  • Method and system for controlling vehicular direct current converter

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Embodiment Construction

[0021] It should be understood that the term "vehicle" or "vehicle-mounted" or other similar terms as used herein includes motor vehicles in a broad sense, such as passenger-carrying vehicles including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, etc. Vehicles, including boats of all kinds and seagoing vessels, spacecraft, etc., and including hybrid vehicles, electric vehicles, plug-in hybrid vehicles, hydrogen-powered vehicles, and other alternative fuel (e.g., fuel derived from sources other than gasoline) vehicles . A hybrid vehicle, as referred to herein, is a vehicle that has two or more sources of power, for example, a vehicle that has both gasoline power and electric power.

[0022] Although the exemplary embodiment is described as using a plurality of units to perform the exemplary process, it should be understood that the exemplary process may also be performed by one or more modules. Furthermore, it should be understood that the term "c...

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PUM

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Abstract

A method and system for controlling a vehicular direct current converter are provided. The method comprises: detecting, by a controller, a state of charge (SOC) of a vehicular auxiliary battery; and when the detected SOC of the auxiliary battery falls within a predetermined setting range, adjusting, by the controller, an output voltage of a vehicular direct current converter to allow the auxiliarybattery to have zero current and maintain the SOC of the auxiliary battery. In particular, zero-current control is performed during control for maintaining an SOC of an auxiliary battery. Accordingly, energy loss due to charging and discharging of the auxiliary battery is minimized and the fuel efficiency of a vehicle is improved.

Description

technical field [0001] The present disclosure relates to a method and system of controlling an on-vehicle DC converter, and more particularly, to a method of controlling an on-vehicle DC converter that performs zero-current control during control to maintain a state of charge (SOC) of an auxiliary battery And system, so as to minimize the energy loss caused by charging and discharging the auxiliary battery, so as to improve the fuel efficiency of the vehicle. Background technique [0002] Environmentally friendly vehicles including hybrid vehicles, plug-in hybrid vehicles, and electric vehicles pass through a low-voltage direct-current (DC-DC) converter (LDC) for vehicle fuel efficiency and auxiliary battery protection according to driving conditions and battery status The variable voltage control of the battery is used to perform the charge, discharge and maintenance control of its auxiliary battery. In addition, an LDC command voltage configured to perform charge, dischar...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0068H02J2207/20B60L53/20B60L7/16B60L2210/10Y02T10/72Y02T10/70Y02T10/7072Y02T90/14B60L58/12B60L7/10B60L2240/549B60L2240/545B60L2240/527B60Y2200/92B60Y2200/91B60L58/13
Inventor 李浩仲申东准崔远景朴骏渊权娜莱成玄旭金志宪柳昌烈李东俊
Owner HYUNDAI MOTOR CO LTD
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