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Calculation method and device for required output power of dual-motor system and dual-motor system

A technology of output power and demand power, applied in the field of dual motor system, to achieve the effect of taking into account both power and economy

Active Publication Date: 2019-06-04
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a method and device for calculating the required output power of a dual-motor system, and a dual-motor system to solve the problem that the existing technical solutions cannot ensure flexible control of the drive motor and generator without damaging the components. The problem of outputting their respective maximum output power

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  • Calculation method and device for required output power of dual-motor system and dual-motor system
  • Calculation method and device for required output power of dual-motor system and dual-motor system
  • Calculation method and device for required output power of dual-motor system and dual-motor system

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Embodiment 1

[0045] Embodiment 1 of the present invention discloses a method for calculating the required output power of a dual-motor system. The flow chart is as follows: figure 1 As shown, the calculation methods include:

[0046]S101, generating a corresponding flag signal according to the current vehicle operating parameters;

[0047] In the process of executing step S101, a corresponding flag signal is generated according to the current vehicle operating parameters, wherein the current vehicle operating parameters include the current vehicle speed, the current vehicle speed change value, the current accelerator pedal opening, the brake pedal braking force and the remaining battery power Percentage, the flag signal includes the priority flag signal and no priority flag signal, the priority flag signal also includes the priority generator flag signal and the priority drive motor flag signal.

[0048] S102, when the flag bit signal is a priority flag bit signal, acquire and select one ...

Embodiment 2

[0057] Based on the method for calculating the required output power of a dual-motor system disclosed in Embodiment 1 of the present invention, Embodiment 2 of the present invention discloses another method for calculating the required output power of a dual-motor system. The flow chart is as follows figure 2 As shown, the calculation methods include:

[0058] S101, generating a corresponding flag signal according to the current vehicle operating parameters;

[0059] S201. Obtain the current maximum allowable output power of the drive motor and the current maximum allowable output power of the generator when the flag signal is a no-priority flag signal;

[0060] In the process of executing step S201, when it is judged that the flag signal is no priority flag signal, it means that it is in the parking state, and the current maximum allowable output power of the drive motor and generator is obtained directly.

[0061] S102, when the flag bit signal is a priority flag bit signa...

Embodiment 3

[0069] Based on the calculation method of the required output power of the dual-motor system disclosed in Embodiment 1 and Embodiment 2 of the present invention above, as figure 1 and figure 2 In the shown step S102, obtain and select one of the generator and the drive motor as the priority motor and the other as the specific execution process of the limit motor according to the priority flag bit, such as image 3 shown, including the following steps:

[0070] S301. Obtain the priority flag according to the priority flag signal;

[0071] S302, judging whether the priority flag bit is a preset value;

[0072] S303, if yes, select the generator as the priority motor, and correspondingly, select the driving motor as the restricted motor;

[0073] S304, if not, select the driving motor as the priority motor, and correspondingly, select the generator as the restricted motor.

[0074] The calculation method for the required output power of the dual-motor system disclosed in the...

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Abstract

The invention discloses a method and device for calculating the output power required by a dual-motor system and the dual-motor system. The method comprises the steps that corresponding mark position signals are generated according to current vehicle operating parameters; when the mark position signals are preferred mark position signals, one of a generator and a driving motor is obtained and selected as a preferred motor according to the preferred mark positions, and the other serves as a limited motor; the maximum allowed output power of the preferred motor is calculated; the output power required by the preferred motor is calculated and sent to the preferred motor; the actual output power of the preferred motor is obtained, and the maximum allowed output power of the limited motor is calculated; the output power required by the limited motor is calculated and sent to the limited motor. Based on the disclosed method, the respective output powers required by the driving motor and the generator are flexibly controlled on the premise that components and parts are not damaged, and accordingly the dynamic property and economy of a whole vehicle are considered concurrently.

Description

technical field [0001] The invention relates to the technical field of dual-motor system control, in particular to a calculation method and device for the required output power of the dual-motor system and the dual-motor system. Background technique [0002] With the increasingly serious energy shortage and environmental degradation, and the increasingly stringent national fuel consumption regulations, new energy vehicle technology is becoming a hot spot in the field of automotive research, and gasoline-electric hybrid vehicles have become the mainstream products of new energy vehicles. [0003] In order to improve the working efficiency of the motor system (including the vehicle controller, drive motor, generator and dual-motor controller) in the gasoline-electric hybrid vehicle, a booster device is added to the dual-motor controller to drive the motor and generator. The current flows through the boost device. Since the boost device is mainly composed of inductive componen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/08B60W20/10B60W40/00
CPCB60W10/08B60W20/10B60W40/00B60W2510/085B60W2710/086
Inventor 马明慧朱小丰贺刚苏岭周洪波
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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