An energy management strategy for the power system of a heavy-duty hybrid special vehicle

A hybrid power and power system technology, applied in the field of energy management strategies, can solve the problems of deviation of demand power, slow response speed of hybrid power system, increase of battery pack loss, etc., to eliminate lag, realize adaptive adjustment, extend effect of life

Active Publication Date: 2021-02-26
BEIJING INST OF SPACE LAUNCH TECH +1
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Problems solved by technology

[0005] The purpose of the present invention is to provide an energy management strategy for the power system of a heavy-duty hybrid special vehicle, which is used to solve the deviation between the demand power estimated by the motor controller and the demand power of the actual electric drive system in the prior art, and the response of the hybrid power system. Problems with slower speeds and increased wear and tear on the battery pack

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  • An energy management strategy for the power system of a heavy-duty hybrid special vehicle

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[0029] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0030] The present invention aims at the problems that there is a deviation between the required power estimated by the existing motor controller and the required power of the actual electric drive system, the response speed of the hybrid system is slowed down, and the loss of the battery pack is increased, and a heavy-duty hybrid special Energy management strategies for vehicle powertrains.

[0031] like Figure 2-3 As shown, the embodiment of the present invention provides an energy management strategy for the power system of a heavy-duty hybrid special vehicle. The hybrid system includes an energy management controller and a power unit and a battery pack controlled by the energy management controller;

[0032] The energy management strategy collects ...

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Abstract

The invention provides an energy management strategy for a heavy-duty hybrid power special vehicle power system. The hybrid power system comprises an energy management controller and further comprisesa power unit and a battery pack which are controlled by the energy management controller; and the energy management strategy collects a current, the temperature and the SOC physical quantity of the battery pack to conduct closed-loop regulation on the loss power of the battery pack, the given loss of the battery pack is determined through the temperature and the SOC physical quantity of the battery pack, the actual loss of the battery pack is determined through the current of the battery pack, a difference value of the given loss and the actual loss is input into a closed-loop controller, after regulation through the closed-loop controller, the given power of the power unit is output, and the output power output by the power unit and the output power of the battery pack are superimposed and then act on a load. According to the energy management strategy, integrated power supplying of an electric driving system and a loading system is achieved, the power response speed of the hybrid power system is increased, the loss of the power battery pack is lowered, and the life of the power battery pack is prolonged.

Description

technical field [0001] The invention relates to the field of energy management strategies, in particular to an energy management strategy for the power system of a heavy-duty hybrid special vehicle. Background technique [0002] At present, heavy-duty hybrid special vehicles use diesel generator sets and energy storage battery packs as energy sources to provide power for electric drive systems and bodywork systems. The energy management strategy is used to control the energy output of the hybrid system and the distribution of energy between the generator set and the energy storage battery set. Energy management strategies can affect the dynamic performance, efficiency and other indicators of the power system. [0003] like figure 1 As shown, the electric drive controller of the existing energy management strategy collects the driver’s pedal opening and vehicle speed information, calculates the required torque and power of the electric drive system, and sends the required p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/10B60W2510/244B60W2510/246Y02T10/62
Inventor 夏欢骆志伟赵志刚何刚鞠兴龙杨金波李均锋谭文华刘相新薛美芳
Owner BEIJING INST OF SPACE LAUNCH TECH
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