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Extended Range Electric Vehicle (EREV) auxiliary power unit power distribution method, device and vehicle

A technology of auxiliary power unit and distribution method, which is applied to electric vehicles, engine-driven traction, electric traction, etc., can solve the problems of difficult control effect, inability to achieve the best economic performance of the whole vehicle, and inability to dynamically change the control effect. , to achieve the effect of improving safety performance and service life

Inactive Publication Date: 2017-03-01
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is easy to implement, its control effect cannot be dynamically changed with the working conditions and vehicle operating conditions, and the power of the auxiliary power unit is often limited to one or several fixed values, so it is difficult to obtain a global optimal control Effect, can not make the economic performance of the vehicle to achieve the best

Method used

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  • Extended Range Electric Vehicle (EREV) auxiliary power unit power distribution method, device and vehicle
  • Extended Range Electric Vehicle (EREV) auxiliary power unit power distribution method, device and vehicle
  • Extended Range Electric Vehicle (EREV) auxiliary power unit power distribution method, device and vehicle

Examples

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Effect test

Embodiment 1

[0076] This embodiment provides a power distribution method for an auxiliary power unit of an extended-range electric vehicle. The auxiliary power unit is arranged in the power system of the extended-range electric vehicle, such as figure 2 shown, including:

[0077] S1. Obtain the total power required by the power system of the extended-range electric vehicle. Preferably, as image 3 As shown, the step S1 may include:

[0078] S11. Obtain the required power of the power system of the extended-range electric vehicle. Preferably, as Figure 4 As shown, the step S11 may include:

[0079] S111. Obtain the accelerator pedal opening, vehicle speed and motor speed of the extended-range electric vehicle. Specifically, the opening of the accelerator pedal can be measured and obtained by the position sensor, and the vehicle speed and the rotational speed of the motor can be measured and obtained by the speed sensor. The measurement is convenient and the data is accurate.

[0080...

Embodiment 2

[0099] This embodiment provides a power distribution device for an auxiliary power unit of an extended-range electric vehicle, the auxiliary power unit is arranged in the power system of the extended-range electric vehicle, such as Figure 8 As shown, it includes: a total demand power acquisition unit 1, a charging and discharging power acquisition unit 2, a target output power acquisition unit 3 and an adjustment unit 4, wherein,

[0100] The required total power acquisition unit 1 is used to obtain the required total power of the power system of the extended-range electric vehicle. Preferably, the required total power acquisition unit 1 may include:

[0101] The required power obtaining subunit 11 is used to obtain the required power of the power system of the extended-range electric vehicle. Preferably, the required power acquisition subunit 11 may include:

[0102] The acquirer 111 is configured to acquire the accelerator pedal opening, vehicle speed and motor speed of t...

Embodiment 3

[0122] This embodiment also provides an automobile including the power distribution device described in Embodiment 2.

[0123] Specifically, the automobile described in this embodiment is an extended-range electric vehicle, and the power distribution device included in it can determine the target output power of the auxiliary power unit according to the total demand power and the maximum allowable charging and discharging power, and then determine the output power of the auxiliary power unit. Adjustment is made to make the power of the auxiliary power unit dynamically change with the working conditions and the running state of the vehicle, conforming to the actual running state of the vehicle, ensuring the rationality of the power distribution of the auxiliary power unit, and achieving the best economic performance of the vehicle.

[0124] Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer pr...

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Abstract

The invention provides an Extended Range Electric Vehicle (EREV) auxiliary power unit power distribution method, device and a vehicle; the auxiliary power unit is arranged in the EREV power system; the method comprises the following steps: obtaining the demanding total power of the EREV power system and the maximum allowed charge and discharge power of a power battery of the EREV power system; determining the target output power of the auxiliary power unit according to the demanding total power and the maximum allowed charge and discharge power. Along with vehicle driving, the residual power and temperature of the power battery change as well, and the maximum allowed charge and discharge power will also change; the demanding total power of the power system is related to real time states of the vehicle; the target output power of the auxiliary power unit is determined according to the demanding total power and the maximum allowed charge and discharge power, so the method and device can perform dynamic changes along with working conditions and vehicle running states, thus complying with vehicle real running states, and optimizing the vehicle economic performance.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a power distribution method and device for an auxiliary power unit of an extended-range electric vehicle and the vehicle. Background technique [0002] Range-extended electric vehicles, which not only have the characteristics of simple structure of electric vehicles, but also make up for the performance defects of current electric vehicle batteries with insufficient energy, are one of the main directions of the current development of hybrid electric vehicles. The power system structure of the extended-range electric vehicle is as follows: figure 1 As shown, it includes an auxiliary power unit 1 (Auxiliary PowerUnit, APU), a power battery 2, a drive motor 3, a transmission mechanism 4 and a vehicle control unit 5, wherein the drive motor 3 is the main power source of the extended-range electric vehicle, and the drive transmission The mechanism 4 drives the wheels to rot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L11/18B60L11/02B60L50/10
CPCY02T10/70Y02T10/7072Y02T10/72
Inventor 杨秀娟
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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