Hybrid electric vehicle and power output control method and device thereof

A hybrid electric vehicle, power output control technology, applied in the direction of hybrid electric vehicles, transportation and packaging, motor vehicles, etc., can solve the problem that the reliable power output of the vehicle cannot be guaranteed, so as to avoid power interruption or limitation, ensure safety, The effect of small attenuation coefficient

Active Publication Date: 2021-03-26
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
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  • Claims
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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 de...

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  • Hybrid electric vehicle and power output control method and device thereof
  • Hybrid electric vehicle and power output control method and device thereof

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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 a power output control method and device thereof. The control method comprises the steps of when a driving motor is in a driving state, detectingthe required power of the vehicle; and when the required power of the vehicle is greater than the output power of the driving motor corresponding to the output current limit value of a power battery,controlling the power battery to output an output current value less than or equal to the output current limit value, outputting the output power corresponding to the output current value by the driving motor, controlling an internal combustion engine to operate, controlling the internal combustion engine to output certain output power, wherein the output power of the internal combustion engine and the output power of the driving motor jointly drive the vehicle to run. According to the method, when the output power corresponding to the output current limit value of the power battery cannot meet the required power of the vehicle, the internal combustion engine is controlled to operate to assist the vehicle in outputting power corresponding to the required power, and reliable power output of the vehicle is achieved under the condition that the safety of the power battery is guaranteed.

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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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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