Hybrid electric vehicle composite power supply and method based on adaptive filter power split control

An adaptive filter and hybrid vehicle technology, which is applied in the field of energy storage devices, can solve the problems that batteries cannot meet the high power density requirements of loads and fully recover energy, limit the rapid development of HEVs, and have low specific power of energy storage systems. The effect of cycle charge and discharge times, high power density and good control effect

Inactive Publication Date: 2015-09-02
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 difficult to meet the high power density requirements of the load during instantaneous start and acceleration, and the energy is fully recovered during rapid braking. Limit the rapid development of HEV

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  • Hybrid electric vehicle composite power supply and method based on adaptive filter power split control
  • Hybrid electric vehicle composite power supply and method based on adaptive filter power split control
  • Hybrid electric vehicle composite power supply and method based on adaptive filter power split control

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Embodiment Construction

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

[0018] The structure of the composite power supply of the hybrid electric vehicle controlled by the adaptive filter power splitting of the present invention is as follows: figure 1 Shown, including batteries, supercapacitors and DC / DC converters. The specific energy of the battery is relatively large, so it is directly connected to the power bus and used as the main power supply to provide the average power of the load power; due to the large specific power of the supercapacitor, it is connected to the power bus through a DC / DC converter and connected to the DC-DC The converters are connected in series to form an auxiliary power supply, which mainly provides the peak power of the load power. The advantage of this structure is that the battery determines the bus voltage, directly outputs power to the outside, and has high energy conversion efficiency; w...

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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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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00B60K6/28
CPCY02T10/92
Inventor 王琪孙玉坤
Owner JIANGSU UNIV
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