Energy management system for range extending type electric car and method thereof

An energy management system and technology for electric vehicles, applied in the field of energy management systems for extended-range electric vehicles, can solve the problems of low energy management efficiency, reduced service life, power battery attenuation and other problems of the whole vehicle, so as to ensure fuel economy and improve Effect of recovery efficiency and avoiding the impact of service life

Active Publication Date: 2015-05-06
BEIJING ELECTRIC VEHICLE
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, the control of the range extender system by the range-extended electric vehicle is relatively simple, and the electric system and the range extender system are basically in a relatively independent operating state. Used for auxiliary power generation, the energy management efficiency of the vehicle is low, and the fuel economy is poor, especially the frequent high-current charging of the power battery system by the range extender system, which leads to serious attenuation of the power battery and shortens the service life

Method used

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  • Energy management system for range extending type electric car and method thereof
  • Energy management system for range extending type electric car and method thereof

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Embodiment Construction

[0040] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0041] like figure 1 The energy management system of an extended-range electric vehicle shown includes a vehicle controller 1, a power battery 2, an energy input part and an energy output part. The vehicle controller and the power battery are connected through a low-voltage line, and the energy input part The energy output part is connected to the power battery respectively, the energy input part includes a range extender unit and a drive and energy recovery unit, and the energy output part includes a high-voltage auxiliary unit and a drive and energy recovery unit; where:

[0042] The range extender unit includes the engine 3 and the generator 4, and the engine 3 and the generator 4 are connected; the drive and energy recovery unit includes the drive motor 5, the reducer 6 and the wheels 7, and the drive motor 5, th...

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Abstract

The invention provides an energy management system for a range extending type electric car and a method thereof. The energy management system comprises a car controller, a power battery, an energy input part and an energy output part; the car controller is connected with the power battery through low-voltage wires, the energy input part and the energy output part are connected with the power battery, the energy input part comprises a range extender unit and a driving and energy recovery unit, and the energy output part comprises a high-voltage auxiliary unit and a driving and energy recovery unit. The method comprises the steps that firstly, first-order regulation is performed on the energy input part and the energy output part through thresholds; secondly, further second-order regulation is performed on the energy input part and the energy output part according to SOC, the state of charge of the power battery, and the efficiency of the energy management system is effectively improved.

Description

technical field [0001] The invention relates to the field of energy management of automobiles, in particular to an energy management system and method for an extended-range electric vehicle. Background technique [0002] At present, the control of the range extender system by the range-extended electric vehicle is relatively simple. The electric system and the range extender system are basically in a relatively independent operating state. Used for auxiliary power generation, the energy management efficiency of the vehicle is low, and the fuel economy is poor, especially the frequent high-current charging of the power battery system by the range extender system, which leads to serious attenuation of the power battery and shortens the service life. Contents of the invention [0003] In view of this, the present invention provides an energy management system and method for an extended-range electric vehicle, aiming at improving the energy management efficiency of the whole v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/12B60L50/15
CPCY02T10/70Y02T10/7072
Inventor 黄殿辉尹颖易迪华张友焕
Owner BEIJING ELECTRIC VEHICLE
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