Energy control method of extended range electric vehicle

A technology of energy control and electric vehicles, which is applied in the direction of motor vehicles, hybrid vehicles, transportation and packaging, etc., can solve the problems of single operation mode of the whole vehicle, short service life of the power battery, and low working efficiency of the engine, so as to improve the economy , prolong life, improve the effect of service life

Inactive Publication Date: 2016-05-04
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the problems existing in the prior art such as the short service life of the power battery, the low working efficiency of the engine, and the single operation mode of the whole vehicle, and provide an energy control method for an extended-range electric vehicle

Method used

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  • Energy control method of extended range electric vehicle
  • Energy control method of extended range electric vehicle
  • Energy control method of extended range electric vehicle

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specific Embodiment

[0088] The energy control method of the extended-range electric vehicle is further specified in detail, and two groups of examples are taken for energy control. Refer to Table 1, the preset control parameters of power components are shown in the table:

[0089] Table 1 Preset control parameters of power components

[0090] Example Assumed Parameters

Embodiment 1

[0092] Vehicle status data at the current moment:

[0093] The state of health (SOH) of the power battery is 0.6, the power of the power battery (SOC) is 0.18, the required power of the vehicle (P_req) is 15Kw, and the brake pedal is not actuated.

[0094] The judgment steps are as follows:

[0095] S1: Obtain the health status of the power battery, and the value provided by the battery management system to the vehicle controller through the CAN bus is 0.6;

[0096] S2: Judging the health status of the power battery, the health status of the power battery is 0.6 > the predetermined value of the battery health status is 0.4, and it is judged that the power battery is in a healthy state;

[0097] S3: Judging whether the brake pedal is activated, according to the current state data of the vehicle, the brake pedal is not activated at this time;

[0098] S4: Judgment on the power state of the power battery, the power of the power battery is 0.18 < the lower limit of the power of ...

Embodiment 2

[0101] Vehicle status data at the current moment:

[0102] The power battery state of health (SOH) is 0.2, the power battery power (SOC) is 0.23, the vehicle demand power (P_req) is 45Kw, and the brake pedal is not activated.

[0103] The judgment steps are as follows:

[0104] S1: Obtain the health status of the power battery, and the value provided by the battery management system to the vehicle controller through the CAN bus is 0.2;

[0105] S2: Judging the health status of the power battery, the health status of the power battery is 0.2

[0106] S3: Judging whether the brake pedal is activated, according to the current state data of the vehicle, the brake pedal is not activated at this time;

[0107] S4: Judgment of power state of the power battery, the power of the power battery is 0.23 < the lower limit of the power of the power battery in an unhealth...

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Abstract

The invention belongs to the technical field of electric vehicles, and relates to an energy control method of an extended range electric vehicle. The problems of short service life of power batteries, low working efficiency of engines and the unitary vehicle operation mode in the prior art are solved. The energy control method of the extended range electric vehicle comprises the following steps of (1) acquiring the health status of a power battery, (2) judging whether the health status of the power battery is smaller than the health status index value of the power battery or not, (3) judging whether a brake pedal acts, (4) judging whether the electric quantity of the power battery is higher than the electric quantity lower limit value of the power battery which is in the health status or not, (5) entering into a multipoint electric quantity recovery stage in a whole vehicle mode, (6) entering into a single-point electric quantity consumption stage in a whole vehicle mode, (7) judging whether the brake pedal acts, (8) judging whether the electric quantity of the power battery is higher than the electric quantity lower limit value of the power battery which is in a non-health status, (9) entering into a curve electric quantity maintaining stage in a whole vehicle mode, and (10) entering into a curve electric quantity consumption stage in a whole vehicle mode and controlling the operation mode of the whole vehicle by the power demanded by the whole vehicle.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to an energy control method for an extended-range electric vehicle. Background technique [0002] With the development of low-carbon economy, the demand for energy saving and emission reduction has become the development trend of the automobile industry. The emergence of electric vehicles, especially extended-range electric vehicles, has effectively realized the concept of energy saving and emission reduction while ensuring the mileage of the vehicle. The power battery is the main energy storage component of the extended-range electric vehicle. Due to the limitation of technical conditions, its life will have a serious impact on the performance of the vehicle, the cost of the vehicle, and the environmental pollution after the vehicle is scrapped. [0003] However, the current energy operation methods of extended-range electric vehicles seldom take into account...

Claims

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Application Information

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IPC IPC(8): B60W20/13B60W10/06B60W10/26
CPCB60W10/06B60W10/26B60W2510/244B60W2710/0677B60W2710/242
Inventor 初亮孙成伟郭建华许楠马文涛赵迪富子丞李育宽张元建石求军
Owner JILIN UNIV
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