Hybrid electric vehicle composite power supply for self-adapting filter power dividing control and self-adapting filter power dividing control method

An adaptive filter and hybrid electric vehicle technology, applied in the field of energy storage devices, can solve the problems that the battery is difficult to meet the high power density requirements of the load, fully recover the energy, limit the rapid development of HEV, and the specific power of the energy storage system is low, so as to reduce the The number of cycles of charge and discharge, high power density, and good control effect

Inactive Publication Date: 2014-06-18
JIANGSU UNIV
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Problems solved by technology

The reason for this problem is that the specific power of the battery energy storage system is low and the cycle life is short, which is mainly reflected in the fact that the HEV battery is diffic

Method used

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  • Hybrid electric vehicle composite power supply for self-adapting filter power dividing control and self-adapting filter power dividing control method
  • Hybrid electric vehicle composite power supply for self-adapting filter power dividing control and self-adapting filter power dividing control method
  • Hybrid electric vehicle composite power supply for self-adapting filter power dividing control and self-adapting filter power dividing control method

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[0017] The present invention will be further described below in conjunction with the drawings and embodiments.

[0018] The structure of the hybrid electric vehicle composite power supply controlled by the adaptive filter power split of the present invention is as follows figure 1 Shown, including batteries, super capacitors and DC / DC converters. The battery has a large specific energy, so it is directly connected to the power bus as the main power source to provide the average power of the load power; because the supercapacitor has a large specific power, it is connected to the power bus through a DC / DC converter and is connected to the DC-DC The converter is connected in series to form an auxiliary power supply, which mainly provides peak power in the load power. The advantage of this structure is that the battery determines the bus voltage and directly outputs power, which has high energy conversion efficiency; while the super capacitor automatically adjusts its own voltage th...

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Abstract

The invention discloses a hybrid electric vehicle composite power supply for self-adapting filter power dividing control and a self-adapting filter power dividing control method. The composite power supply comprises a storage battery, a super capacitor and a bidirectional DC/DC (Direct Current/Direct Current) convertor, wherein the storage battery is connected with a power bus to be used as a main power supply; the super capacitor is connected with the power bus by the bidirectional DC/DC converter and is connected with the bidirectional DC/DC converter in series to form an auxiliary power supply. The self-adapting filter power dividing control method is used for controlling the bidirectional DC/DC converter. The super capacitor in the composite power supply is used for carrying out power compensation on the storage battery so as to prevent from providing instantaneous power and peak power by the battery; the whole efficiency of the composite power supply is obviously improved; the super capacitor can be used for rapidly and efficiently charging and discharging by large current and regenerative braking energy is recycled to the greatest extent; the self-adapting filter power dividing control method realizes the reasonable distribution of power, guarantees that all parts of the composite power supply are efficient obtains the good control effect.

Description

technical field [0001] The invention relates to an energy storage device and its control method applied to a hybrid electric vehicle (HEV), in particular to a composite power supply that combines a storage battery and a supercapacitor, and uses an adaptive filter power split control method for the composite power supply Composite power supply for hybrid vehicles. Background technique [0002] Due to the increasingly serious environmental pollution and the deepening of the energy crisis, hybrid electric vehicles have developed into an inevitable trend by virtue of their advantages of energy saving and environmental protection. The core of the theory of environmental protection and energy saving of hybrid electric vehicles is to use the energy storage system to "shave the peak and fill the valley" of the power required by the working condition, and recover the kinetic energy during braking, so that the efficiency of the entire power system is higher. Over the past decade or s...

Claims

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Application Information

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IPC IPC(8): H02J7/00B60K6/28
CPCY02T10/92
Inventor 王琪孙玉坤
Owner JIANGSU UNIV
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