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Energy management method for hybrid electric vehicle

A hybrid vehicle and energy management technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of large battery damage, large driving force, reduced battery efficiency and battery function, etc., to achieve both The effect of fuel economy and guaranteed service life

Inactive Publication Date: 2017-06-09
TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD
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Problems solved by technology

[0003] Existing hybrid vehicles mostly use batteries and capacitors to jointly drive vehicles, especially hybrid buses. Due to their normal weight and large number of passengers, the driving force required by the vehicle is relatively large. If the battery is used alone, the battery must be damaged. The damage of the battery is relatively large, so the multi-purpose capacitor is used in conjunction with the battery. However, when managing the energy distribution of the battery and the capacitor, the usage of the battery is often reduced as much as possible in order to prolong the service life of the battery. However, the usage of the battery is reduced while reducing the battery. The use efficiency of the battery and the function of the battery will affect the energy utilization efficiency and fuel saving and emission reduction effect of the hybrid electric vehicle

Method used

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  • Energy management method for hybrid electric vehicle
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Embodiment Construction

[0019] The concrete implementation method of the present invention is as follows:

[0020] A hybrid vehicle includes energy sources such as a motor, a battery, and a capacitor. The present invention is mainly aimed at the case where the electric power source is a battery. Other electric power source schemes are similar to those described in the present invention.

[0021] In order to protect the battery, the existing hybrid vehicles using batteries generally adopt the strategy of using as little battery as possible. However, even if the battery itself is not used, there will be loss, and the usage of the battery is too small, which will inevitably lead to a lower usage of the engine. This will cause the engine to inevitably run in the low-efficiency zone, which will affect the fuel economy of the vehicle, and because the motor of the vehicle is powered by the battery, this will inevitably affect the work of the motor, especially when the vehicle accelerates for a long time or ...

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Abstract

The invention discloses an energy management method for a hybrid electric vehicle, which uses the relationship between the internal resistance value of the battery and the mileage to obtain the theoretical value of the internal resistance value of the battery under the current mileage, and compares it with the measured internal resistance value of the battery. In this way, the usage of the battery is adjusted in real time, thereby not only ensuring the service life of the battery, but also taking into account the fuel economy of the hybrid electric vehicle.

Description

technical field [0001] The invention relates to the energy management of the hybrid electric vehicle, in particular to the distribution management of the battery and the engine of the hybrid electric vehicle. Background technique [0002] With the development of hybrid electric vehicles, the service life of power batteries used in hybrid electric vehicles has become one of the most important technical problems in the development of hybrid electric vehicles. During the use of hybrid electric vehicles, batteries are generally used when the vehicle starts. This is to reduce the low-efficiency region of the engine when it is started. However, the battery of a hybrid vehicle will decay with the increase of usage time during operation. It is very necessary to effectively reduce the decay of the battery to ensure the service life of the battery. [0003] Existing hybrid vehicles mostly use batteries and capacitors to jointly drive vehicles, especially hybrid buses. Due to their nor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00
CPCB60W20/00
Inventor 孙永宾张辉
Owner TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD
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