A control method for a 48v battery, bsg weak hybrid energy recovery control system

A technology of weak hybrid power and energy recovery, which is applied in the direction of electric braking system, electric energy management, control drive, etc., can solve the problems of complex data acquisition and calculation process, long development cycle, and complex system, so as to save development cost and develop cycle, improve energy recovery efficiency, and simplify system procedures

Active Publication Date: 2020-03-06
JIANGXI CHANGHE AUTO
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] (1) The system is complex, and the data collection and calculation processes are numerous;
[0006] (2) ESP needs to be newly developed for calibration and matching, and the development cost will increase. After calculation and analysis by the brake control system controller (ESP), it will be output to the vehicle controller (HCU), and the final command will be sent to the motor controller (MCU). );
[0007] (3) Many parts, low integration and long development cycle;

Method used

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  • A control method for a 48v battery, bsg weak hybrid energy recovery control system
  • A control method for a 48v battery, bsg weak hybrid energy recovery control system
  • A control method for a 48v battery, bsg weak hybrid energy recovery control system

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Embodiment

[0039] A control method for a 48V battery and BSG weak hybrid energy recovery control system, comprising the following steps:

[0040] (1) Brake pedal angle sensor (displays brake pedal angle stroke θ'), accelerator pedal angle sensor (displays accelerator pedal angle stroke θ), clutch, neutral sensor and vehicle speed sensor matching design, and at the same time the vehicle speed sensor set the threshold;

[0041] (2) The vehicle controller receives and stores various data of the motor controller;

[0042] (3) The vehicle controller receives signals from the clutch, neutral gear sensor, vehicle speed sensor, accelerator pedal angle sensor, brake pedal angle sensor and 48V battery and determines the threshold value set in step (2);

[0043] (4) According to the judgment result of the above step (3), the vehicle controller (HCU) will analyze the torque demand again, output the energy recovery torque demand, and send the energy recovery command to the motor controller (MCU).

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Abstract

The invention discloses a 48V BSG weak hybrid power energy recovery control system strategy. Signals of a brake pedal angle sensor, an accelerator pedal angle sensor, a neutral position sensor, a clutch and the like are collected and then centralizedly and unitedly transmitted to a hybrid control unit (HCU), and the hybrid control unit calculates and analyzes torque demands and sends an energy recovery command to an execution mechanism (motor control unit MCU) to achieve an energy recovery function; light, medium and deep energy recovery functions can be achieved, the control strategy has a high fine level, an electronic stability program (ESP) system does not need to be redeveloped and calibrated, and maximization of benefits of the fuel saving rate and cost for weak hybrid vehicles is achieved.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicles, and in particular relates to a control method for a 48V battery and a BSG weak hybrid energy recovery control system. Background technique [0002] With the increasing application of new energy hybrid vehicles, the research on energy recovery system is one of its core technologies. The energy recovery system refers to converting a part of the kinetic energy into electric energy when the car decelerates or brakes, stores it and then uses it to drive the car. [0003] In the M50S model 48V BSG (Belt-driven Starter / Generator belt drive starter / power generation integrated motor) hybrid technology pre-research project, because the system adds a braking energy recovery function, it is necessary to match a suitable braking energy recovery device. Currently, domestic OEMs often implement the energy recovery function based on ESP system brake energy feedback device technology, but this t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L7/10B60L15/20
CPCB60L7/10B60L15/2009Y02T10/72
Inventor 肖金吴照说姜少华贺志雄陈兴文杨聪慧
Owner JIANGXI CHANGHE AUTO
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