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Hybrid electric vehicle power supply system based on three-port DC/DC converter

A technology for hybrid electric vehicles and power supply systems, applied in electric vehicles, control/regulation systems, battery/battery traction, etc., can solve problems such as poor discharge capacity and inability to charge power batteries, and achieve a small number of devices and overall control. , the effect of wide adjustment range

Active Publication Date: 2021-11-12
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the power battery of the fuel cell hybrid electric vehicle cannot be charged and the discharge capacity is poor in the low temperature environment, and provides a hybrid electric vehicle power supply system based on a three-port DC / DC converter

Method used

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  • Hybrid electric vehicle power supply system based on three-port DC/DC converter

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specific Embodiment approach 1

[0076] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the hybrid electric vehicle power supply system based on the three-port DC / DC converter described in this embodiment includes a three-port DC / DC converter, a power battery, a battery heating film Uo2, a fuel cell Uin and a converter control circuit ;

[0077] The three ports of the three-port DC / DC converter are respectively connected to the power supply terminal of the battery heating film, the power supply terminal of the fuel cell and the power supply terminal of the drive motor controller;

[0078] The converter control circuit is used to control the switch of the switching tube in the three-port DC / DC converter, so that the three-port DC / DC converter is in different working modes;

[0079] The battery heating film Uo2 is arranged on the outside of the power battery for heating the power battery;

[0080] The three-port DC / DC converter includes: a front-end Buck chopper ...

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Abstract

The invention discloses a hybrid electric vehicle power supply system based on a three-port DC / DC converter, and belongs to the technical field of electric vehicle power supply. According to the system, the problems that the power battery of the fuel cell hybrid electric vehicle cannot be charged and is poor in discharging capacity in a low-temperature environment are solved. The system comprises a three-port DC / DC converter, a power battery, a battery heating film, a fuel battery Uin and a converter control circuit, three ports of the three-port DC / DC converter are respectively connected with the power supply end of the battery heating film, the power supply end of the fuel battery and the power supply end of the driving motor controller; the converter control circuit is used for controlling the switching of a switching tube in the three-port DC / DC converter, so that the three-port DC / DC converter is in different working modes; the battery heating film is arranged on the outer side of the power battery and is used for heating the power battery; the system is suitable for hybrid electric vehicle power supply.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle power supply. Background technique [0002] A fuel cell hybrid vehicle is powered by a mixture of a fuel cell and a power battery. Compared with traditional pure electric vehicles, the service life of the battery and the cruising range of the vehicle are increased; compared with pure fuel cell vehicles, the dynamic response speed of the system is improved, and it can require high power when starting, accelerating and climbing steep slopes. Quick access to power supply. Moreover, the current fuel cell buses, logistics vehicles, and passenger cars developed by mainstream OEMs all use fuel cell hybrid power systems. Therefore, in the current configuration of new energy vehicles, fuel cell hybrid vehicles are an important development route. [0003] When a fuel cell hybrid vehicle operates in a low-temperature environment, the power battery will face the problems of being unable to charge ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L50/75B60L58/27B60L58/40B60R16/02H02M3/156H02M3/158
CPCB60L50/75B60L58/27B60L58/40B60R16/02H02M3/156H02M3/158Y02T10/70Y02T90/40Y02T10/72
Inventor 吴晓刚张磊
Owner HARBIN UNIV OF SCI & TECH
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