Hybrid power supply system of electric bus and energy management control method of hybrid power supply system

An electric bus, energy management technology, applied in electric vehicle charging technology, electric vehicle, vehicle energy storage and other directions, can solve the problems of power fluctuation, reduce battery service life, etc., to reduce energy loss, improve discharge characteristics, power and The effect of economical improvement

Active Publication Date: 2021-12-24
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, quasi-dynamic wireless charging will have problems such as power fluctuations, and frequent charging and discharging will reduce the service life of the battery

Method used

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  • Hybrid power supply system of electric bus and energy management control method of hybrid power supply system
  • Hybrid power supply system of electric bus and energy management control method of hybrid power supply system
  • Hybrid power supply system of electric bus and energy management control method of hybrid power supply system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] Such as figure 1 As shown, a composite power supply system of an electric bus includes a power supply module and an energy management and control module, wherein the power supply module includes:

[0063] The quasi-dynamic wireless charging module is used to wirelessly transmit the power grid power to the vehicle-mounted terminal when the electric bus is parked at night, during driving and waiting at a stop, so as to supply power for the energy storage module and the motor;

[0064] The energy storage module is used to store the electric energy required during the driving of the electric bus and supply power to the motor, and receive the electric energy transmitted by the quasi-dynamic wireless charging module; it is used to ensure the battery life of the electric bus in the uncharged state and complete the power supply module The charging and discharging process can also be used to receive the electric energy recovered by the motor through braking energy recovery;

[...

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PUM

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Abstract

The invention relates to a hybrid power supply system of an electric bus. The system comprises a power supply module and an energy management and control module. The power supply module comprises: a quasi-dynamic wireless charging module which wirelessly transmits the electric energy of a power grid to a vehicle-mounted end and supplies power to an energy storage module and a motor, an energy storage module used for storing electric energy, supplying power to a motor and receiving the electric energy transmitted by the quasi-dynamic wireless charging module, and a bidirectional DC-DC module. The energy management and control module comprises: a power supply detection module; a driving state detection module used for detecting the current driving state and position information of the electric bus; a traffic state detection module used for information transmission between the electric bus and the transmitting terminal; and a control strategy module. The invention further discloses an energy management control method of the hybrid power system of the electric bus. Aiming at the defect of single charging mode of the current electric bus, the charging process of the electric bus can be more intelligent, convenient and safer.

Description

technical field [0001] The invention relates to the technical field of electric bus composite power supply systems, in particular to a composite power supply system of electric buses and an energy management control method thereof. Background technique [0002] With its advantages of energy saving, environmental protection, and low noise pollution, electric vehicles have gradually become one of the development trends in the automotive industry. As a typical application of electric vehicles, electric buses have been popularized in urban public transportation in my country. However, due to the disadvantages of low energy density, less energy storage, and large mass and volume of lithium-ion batteries, the capacity of lithium-ion batteries on buses is limited, otherwise the cost of buses will be increased. The electric buses currently in use are all charged by plug-in wired charging, and need to be equipped with a lithium-ion battery pack with a large volume and weight to ensu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/12B60L53/122B60L53/22B60L53/62B60L53/60B60L50/40B60L50/60
CPCB60L53/12B60L53/122B60L53/22B60L53/62B60L53/60B60L50/40B60L50/60Y02T10/70Y02T10/7072Y02T90/12Y02T90/14
Inventor 李维汉秦志颖时辉
Owner HEFEI UNIV OF TECH
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