BSG vehicle type autonomous power generation control method and device

Abstract

The invention discloses a BSG vehicle type autonomous power generation control method and device. The method comprises the steps of judging whether a request instruction is received normally or not ina normal function execution mode, maintaining the current mode if the request instruction is received normally, and collecting the working state of the current mode if the request instruction is notreceived normally, judging whether the current mode fails or not according to the current mode working state, entering a standby mode if yes and maintaining the current mode if not, collecting the working state of the standby mode under the standby mode, judging whether the standby mode fails or not according to the working state of the standby mode, entering an autonomous power generation mode ifyes, maintaining the current mode if not, charging a vehicle system power supply battery and a DCDC in the autonomous power generation mode and maintaining the power end voltage of the system power supply battery and the DCDC, collecting the working state of the current mode, judging whether the current mode fails or not according to the current mode working state, skipping to the standby mode ifyes, and maintaining the current mode if not. The method and the device disclosed in the invention have the advantage that the power supply of the whole vehicle can be maintained through the BSG under the condition in which the HCU instruction fails.

Description

technical field [0001] The invention relates to the field of automobile engines, in particular to a control method and device for autonomous power generation of BSG vehicles. Background technique [0002] With the development of automobile technology, the types of vehicles have also developed from the previous fuel vehicles to electric vehicles, and the types of electric vehicles are also divided into pure electric vehicles and hybrid vehicles. BSG (Belt Driven Starter Generator) models belong to It is a kind of hybrid electric vehicle, which belongs to the weak hybrid technology. It is a hybrid technology with idle stop and start function, which can realize the engine suspension of the car before the red light and traffic jam. When the vehicle recognizes the driver When there is an intention to start, the system quickly starts the engine through the BSG system, which eliminates the fuel consumption, emissions and noise of the engine when it is idling, which is equivalent to...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that when the HCU breaks down or the CAN network breaks down, the HCU's request command cannot be normally communicated to the BSG or the request command is lost, causing the current function execution conditions of the BSG to be unsatisfied, and the current function of the BSG cannot be continued , at this time, if the whole vehicle is still running, the 12V battery of the whole vehicle and the system power supply battery will be gradually exhausted, and the BSG is required to be able to perform the power generation function to maintain the power supply demand of each ECUs during the driving of the whole vehicle, and provide a A control method and device for autonomous power generation of a BSG vehicle type, wherein the control method for autonomous power generation of a BSG vehicle type includes:

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