A high-voltage power supply control method for hybrid vehicles

A technology of hybrid electric vehicles and control methods, applied in hybrid electric vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of being unable to provide high voltage for high-voltage electrical components, unable to charge 12V batteries, etc., so as to ensure normal operation and save costs Effect

Active Publication Date: 2020-05-19
GEELY AUTOMOBILE INST NINGBO CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One purpose of the present invention is to solve the technical problem of being unable to provide high voltage to high-voltage electrical components and unable to charge 12V batteries when a problem occurs in the high-voltage power supply system

Method used

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  • A high-voltage power supply control method for hybrid vehicles
  • A high-voltage power supply control method for hybrid vehicles
  • A high-voltage power supply control method for hybrid vehicles

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Embodiment Construction

[0050] figure 1 A power supply schematic diagram of a high voltage power supply system of a hybrid vehicle according to an embodiment of the present invention is shown. like figure 1 As shown, when the hybrid vehicle is running, the high-voltage electrical components are powered by the high-voltage battery pack, and at the same time, the high-voltage to low-voltage inverter converts high voltage to low voltage to supply power to the 12V battery of the vehicle and the low-voltage load of the vehicle.

[0051] figure 2 A working principle diagram of an engine gearbox according to an embodiment of the present invention is shown. image 3 A working principle diagram of an engine gearbox according to an embodiment of the present invention is shown. like figure 2 and image 3 As shown, the hybrid vehicle includes an engine, a dual-clutch gearbox and a motor, and the dual-clutch gearbox includes a first clutch, a second clutch, odd gears and even gears, the first clutch contro...

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PUM

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Abstract

The invention provides a high-voltage power supply control method for a hybrid power vehicle. The method comprises the following steps that the discharge capacity and fault state information of a high-voltage battery pack of the hybrid power vehicle are acquired; whether the discharge capacity of the high-voltage battery pack is lower than a preset threshold value or not is judged, or whether thehigh-voltage battery pack breaks down or not is judged; after the discharge capacity of the high-voltage battery pack is confirmed to be lower than the preset threshold value or the high-voltage battery pack breaks down, even shifts are disengaged and are switched to odd shifts for power output, and meanwhile, high-voltage power utilization components and a high-voltage-to-low-voltage inverter arestopped; a second clutch is connected to allow an engine to drive a motor to rotate, and a rotor of the motor is enabled to output stable high voltage by cutting magnetic induction lines; and power is supplied to the high-voltage power utilization components and the high-voltage-to-low-voltage inverter by utilizing a stable high voltage. According to the scheme of the method, the power supply problem of high-voltage parts can be solved, normal operation of the high-voltage-to-low-voltage inverter can be guaranteed, and therefore the normal operation of a low-pressure system of the whole vehicle can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of high-voltage power consumption of hybrid electric vehicles, in particular to a high-voltage power supply control method for hybrid electric vehicles. Background technique [0002] The power source of the hybrid vehicle has two parts: the engine drive and the motor drive, and the low-voltage power consumption of the whole vehicle is provided by the 12V battery. In normal mode, the high-voltage battery charges the 12V battery through the high-voltage to low-voltage inverter, but when there is a problem with the high-voltage system, the vehicle enters limp mode, and the engine alone is used to drive the vehicle. At this time, a problem with the high-voltage system prevents the high-voltage to low-voltage inverter from charging the 12V battery, and the long-term driving of the vehicle will cause the 12V battery to feed power. Moreover, because there is no high-voltage power supply, the high-voltage electrica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/40B60W10/02B60W10/11
CPCB60W10/02B60W10/11B60W20/40B60W2510/244B60W2710/023B60W2710/1005
Inventor 陈继李进高明明张剑锋徐冲谢红军尹兴起郑鹏刘子龙汪巅胡福建
Owner GEELY AUTOMOBILE INST NINGBO CO LTD
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