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A hybrid electric vehicle and its power output control method and control device

A power output control, hybrid vehicle technology, applied in hybrid vehicles, transportation and packaging, motor vehicles, etc., can solve problems such as the inability to ensure reliable power output of vehicles, avoid power interruption or limitation, small attenuation coefficient, The effect of increased output power

Active Publication Date: 2022-04-08
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a power output control method of a hybrid electric vehicle, which is used to solve the problem that the existing control method cannot guarantee the power output of the vehicle when the required power of the vehicle is greater than the output power of the driving motor corresponding to the limit value of the output current of the power battery. The problem of reliable power output; at the same time, a power output control device for hybrid electric vehicles is provided to solve the problem when the demand power of the vehicle is greater than the output power corresponding to the power battery output current limit of the existing control device. , the problem that the reliable power output of the vehicle cannot be guaranteed; at the same time, a hybrid electric vehicle is provided to solve the problem that when the required power of the vehicle is greater than the output power corresponding to the output current limit of the power battery in the existing hybrid electric vehicle, The problem of not being able to guarantee a reliable power output of the vehicle

Method used

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  • A hybrid electric vehicle and its power output control method and control device
  • A hybrid electric vehicle and its power output control method and control device

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Embodiment Construction

[0043] Hybrid car example:

[0044] The hybrid electric vehicle proposed in this embodiment includes a kind of figure 1 The hybrid power system shown, the hybrid power system includes an internal combustion engine 1, a torsional shock absorber 2, a front planetary row, a rear planetary row, a generator 3, a drive motor 7 and a system output shaft 11, and the front planetary row includes a front sun gear 4, The front planet carrier 5 and the front ring gear 6, the front sun gear 4 is the front first end, the front planet carrier 5 is the front second end, the front ring gear 6 is the front third end, and the rear planet row includes the rear sun gear 8, the rear The planet carrier 9 and the rear ring gear 10, the rear sun gear 8 is the rear first end, the rear planet carrier 9 is the rear second end, and the rear ring gear 10 is the rear third end. The output shaft of the internal combustion engine 1 is connected to the front second end through the torsional shock absorber 2, ...

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Abstract

The invention relates to a hybrid electric vehicle and its power output control method and control device. Wherein the control method includes the following steps: when the drive motor is in the driving state, detect the required power of the vehicle; Or the output current value equal to the output current limit, the drive motor outputs the output power corresponding to the output current value, and controls the operation of the internal combustion engine, controls the internal combustion engine to output a certain output power, and the output power of the internal combustion engine and the output power of the drive motor jointly drive the vehicle to drive . In this method, when the output power corresponding to the power battery output current limit cannot meet the required power of the vehicle, by controlling the operation of the internal combustion engine, it assists in realizing the power corresponding to the vehicle output and the required power. reliable power output.

Description

technical field [0001] The invention relates to a hybrid electric vehicle and its power output control method and control device. Background technique [0002] The protection of the power battery during the operation of a hybrid electric vehicle is very critical, which directly affects the reliability and service life of the vehicle. During the operation of a hybrid electric vehicle, it must not only meet the requirements of the working conditions, but also meet the requirements of the power battery in real time, so as to realize the protection of the power battery and prolong the life of the power battery. [0003] In the electric driving mode of the hybrid electric vehicle, the power battery provides the working current for the driving motor so that the driving motor can output corresponding power. The power battery has a maximum allowable input / output current, that is, the input / output current limit. If the vehicle can ensure that the charging and discharging current of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10
CPCB60W20/10B60W2510/24
Inventor 李瑞苛李涛夏天星王烁吴帅刚
Owner ZHENGZHOU YUTONG BUS CO LTD
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