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Calculation method, storage medium and vehicle for driver's torque demand of mild hybrid power system

A technology of a power system and a calculation method, applied in the field of vehicle power control, can solve problems such as affecting the performance of the vehicle driving control, and achieve the effect of improving the control performance of the vehicle and meeting the driving needs.

Active Publication Date: 2021-02-09
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] How to distribute and output the torque between various power sources in a 48V mild hybrid electric vehicle requires identifying the driver’s torque demand. If the driver’s torque demand cannot be accurately calculated, the engine and motor cannot be effectively exchanged. Torque distribution affects vehicle driving control and vehicle performance. Therefore, how to accurately and effectively calculate the torque demand of the driver in the power system is the key problem to be solved at present.

Method used

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  • Calculation method, storage medium and vehicle for driver's torque demand of mild hybrid power system
  • Calculation method, storage medium and vehicle for driver's torque demand of mild hybrid power system
  • Calculation method, storage medium and vehicle for driver's torque demand of mild hybrid power system

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Embodiment 1

[0055] In order to facilitate the description of the method for calculating the torque demand of the driver of the mild hybrid power system provided by this embodiment, the description will be made in conjunction with the power system of a 48V mild hybrid vehicle. Such as figure 1 As shown, the 48V mild hybrid vehicle power system is mainly composed of engine, BSG motor (Belt-driven Starter / Generator, BSG motor for short), 48V battery, DCDC (Direct Current to Direct Current Converter, DCDC converter for short) DC converter, variable speed At the same time, the assembly is controlled by the corresponding control unit. The motor control unit MCU (Motor Control Unit, referred to as MCU) controls the BSG motor, and the battery management system BMS (Battery Management System, referred to as BMS) controls the 48V battery. , the engine control unit EMS (Engine Management System, referred to as EMS) controls the engine, and the vehicle control unit VCU (Vehicle Control Unit, referred...

Embodiment 2

[0114] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the method for calculating the torque demand of the driver of the mild hybrid power system as provided in the embodiment of the present invention is implemented. The method includes:

[0115] Judging whether the power system is fault-free;

[0116] If there is no fault in the power system, start the engine;

[0117] Determine whether the vehicle gear is in D gear or R gear;

[0118] If the gear of the vehicle is the D gear or the R gear, the driver torque demand calculation module is invoked to output the driver torque demand calculation result.

[0119] The computer storage medium in this embodiment may use any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer-readable storage medium may be, for example,...

Embodiment 3

[0124] The vehicle provided in this embodiment is in the form of a general-purpose terminal. Components of the vehicle may include, but are not limited to: a vehicle body (not shown), one or more processors, storage devices, and a bus connecting different system components (including storage devices and processors).

[0125] Bus refers to one or more of several types of bus structures, including a storage device bus or storage device controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to Industry Standard Architecture (Industry Subversive Alliance, ISA) bus, Micro Channel Architecture (Micro Channel Architecture, MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (Video Electronics Standards Association , VESA) local bus and peripheral component interconnect (Peripheral Component Interconnect, PCI) bus.

[0126] Vehicles t...

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Abstract

The invention relates to the technical field of vehicle power control, in particular to a method for calculating driver torque demand of a mild hybrid system, a storage medium and a vehicle. In the method for calculating the torque demand of the driver of the mild hybrid system, firstly, it is judged whether the power system is fault-free, and if the power system is fault-free, the engine is started; it is judged whether the vehicle gear is in the D gear or the R gear; if the vehicle gear is in the D gear or R gear, the driver’s torque demand calculation module is called to output the calculation result of the driver’s torque demand. This method can accurately and effectively calculate the torque demand of the driver of the power system, meet the driving demand of the driver, and improve the vehicle control performance . The computer-readable storage medium can realize the above method, and accurately and effectively calculate the torque demand of the driver of the power system. The vehicle can realize the above method, meet the driving needs of the driver, and improve the control performance of the whole vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicle power control, in particular to a method for calculating driver torque demand of a mild hybrid system, a storage medium and a vehicle. Background technique [0002] 48V mild hybrid electric vehicles are being promoted and developed by more and more automobile manufacturers due to their good fuel-saving effect and low cost. 48V mild hybrid electric vehicles can be hybridized on the basis of traditional vehicles , adding BSG motor (Belt-driven Starter / Generator, BSG motor for short) and motor control unit (Motor Control Unit, MCU for short), 48V battery and its battery management system BMS (Battery Management System, BMS for short), DCDC The DC converter (Direct Current to Direct Current converter, referred to as DCDC converter), etc., supplies power to the motor through the 48V battery, and then superimposes the torque capacity of the engine, which can not only ensure the driving torque output cap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W10/08B60W20/10B60W40/00
CPCB60W10/06B60W10/08B60W20/10B60W40/00B60W2510/1005B60W2710/0666B60W2710/083Y02T10/62
Inventor 伍庆龙
Owner CHINA FIRST AUTOMOBILE
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