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Control method of commingle dynamic force automobile DC-DC

A technology of hybrid electric vehicles and control methods, which is applied in the direction of hybrid electric vehicles, electric vehicles, electric vehicles, etc., can solve the problems affecting the power consumption efficiency of the whole vehicle, and achieve the effect of improving utilization efficiency and reasonable energy flow

Active Publication Date: 2008-06-25
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This control method can meet the power demand of the low-voltage network and maintain the power balance of the low-voltage battery, but under certain working conditions, it will affect the power consumption efficiency of the whole vehicle

Method used

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  • Control method of commingle dynamic force automobile DC-DC
  • Control method of commingle dynamic force automobile DC-DC
  • Control method of commingle dynamic force automobile DC-DC

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] A hybrid electric vehicle DC-DC control method is characterized in that: the motor integrates power generation and electric functions together to form an ISG motor; according to the state of the ISG motor, the hybrid electric vehicle works in the following modes: auxiliary drive mode, power generation mode, Regenerative braking mode, idle stop mode and traditional working mode; in the above working mode, HCU judges whether to turn on or off the DC-DC, when it is turned on, the current can flow from the high-voltage network to the low-voltage network, and at the same time adjust the DC-DC DC output voltage; when the DC-DC is turned off, the current stops flowing from the high-voltage network to the low-voltage network, and the power supply of the low-voltage network is provided by the low-voltage battery. When the DC-DC converter needs to be turned on, in order to ensure that the system can work safely and reliably, the whole vehicle must meet the following conditions:

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Abstract

The invention relates to a DC-DC control method of a hybrid power vehicle, which is particularly applicable to the hybrid power vehicle with a motor being coaxially coupled with an engine in parallelism; an ISG motor is provided; according to the status of the ISG motor and under the working modes of the supplementary driving mode, the power generation mode, the renewable braking mode, the idle stopping mode and the traditional working mode, HCU judges that whether opens or closes DC-DC; when DC-DC is on, the electric current flows from a high-voltage network to a low-voltage network and at the same time the output voltage of DC-DC is adjusted; when DC-DC is off, the electric current stops flowing from the high-voltage network to the low-voltage network, and the power of the low-voltage network is supplied by a low-voltage battery. The invention improves the utilization efficiency of the electric power, resolves the problems of the traditional controlling method, and can facilitate more reasonable energy flow of the entire vehicle.

Description

technical field [0001] The invention belongs to the field of hybrid electric vehicle control, and realizes the control of the DC-DC converter of the hybrid electric vehicle. Background technique [0002] Energy crisis and environmental degradation are important factors restricting global development. Research on energy-saving and environmentally friendly vehicles is one of the effective means to alleviate energy pressure and reduce environmental pollution. Hybrid electric vehicles take into account the advantages of both internal combustion engine vehicles and pure electric vehicles, and have the advantages of low fuel consumption, low emissions, and long mileage, and are currently a feasible solution. [0003] For parallel hybrid hybrid vehicles, there are usually two electric energy storage packages, one is called a high-voltage electric energy storage package, usually a high-voltage battery (HV), which mainly converts the kinetic energy of the vehicle into electric energy...

Claims

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Application Information

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IPC IPC(8): H02M3/16B60L11/18B60R16/033
CPCY02T10/6226B60K6/485B60W10/08B60W20/00Y02T10/62B60W2050/0006B60W10/24B60W2710/285B60W2710/087
Inventor 杨上东
Owner CHERY AUTOMOBILE CO LTD
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