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Bidirectional DC-DC converter circuit control system and hybrid power motor vehicle

A DC-DC, circuit control technology, applied in control/regulation systems, DC power input conversion to DC power output, instruments, etc., can solve problems such as component aging, can not solve the problem of analog control temperature drift, and achieve good compatibility performance, avoid component aging problems, and reduce design costs

Inactive Publication Date: 2014-01-15
深圳市佳华利道新技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Circuit control systems using bidirectional DC-DC converters generally use analog control technology, which cannot solve the problem of analog control temperature drift and aging of components

Method used

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  • Bidirectional DC-DC converter circuit control system and hybrid power motor vehicle
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  • Bidirectional DC-DC converter circuit control system and hybrid power motor vehicle

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Embodiment Construction

[0024] Such as figure 1 As shown, the bidirectional DC-DC converter circuit control system in this embodiment includes a bidirectional DC-DC converter, a digital signal controller, a protection circuit, a sampling circuit, an optocoupler isolation circuit, an auxiliary power supply and a CAN transceiver. The bidirectional DC-DC converter is connected to the driving circuit, the protection circuit and the sampling circuit, and the sampling circuit and the protection circuit are connected to the digital signal controller, and the digital signal controller is connected to the driving circuit through the optocoupler isolation circuit. The transceiver is connected on the CAN bus and is signally connected with the digital signal controller.

[0025] The bidirectional DC-DC converter (bidirectional Buck / Boost converter) adopts the Buck-Boost topology, which generally has a high-voltage terminal and a low-voltage terminal, and a first switching tube and a second switching tube are arr...

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PUM

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Abstract

The invention discloses a bidirectional DC-DC converter circuit control system and a hybrid power motor vehicle. The bidirectional DC-DC converter circuit control system comprises a bidirectional DC-DC converter, a driving circuit, a sampling circuit, a digital signal controller and a CAN transceiver. The bidirectional DC-DC converter is in signal connection with the driving circuit and the sampling circuit, the driving circuit, the sampling circuit and the CAN transceiver are all in signal connection with the digital signal controller, and the CAN transceiver is connected with a CAN bus. The topological structure of the bidirectional DC-DC converter comprises a high-voltage end and a low-voltage end, the sampling circuit samples current and / or voltage values of the high-voltage end and current and / or voltage values of the low-voltage end, the digital signal controller processes the sampling values and carries out PWM control on the bidirectional DC-DC converter through the driving circuit. Digital control is carried out through sampling of the digital signal controller, the problem of analog control of temperature excursion and the problem of component aging are avoided, design cost of the system is reduced, and compared with analog control, the bidirectional DC-DC converter circuit control system has better compatibility, flexibility and expansibility.

Description

technical field [0001] The invention relates to a bidirectional DC-DC converter circuit control system and a hybrid motor vehicle. Background technique [0002] Bi-directional DC-DC Converter (Bi-directional DC-DC Converter, referred to as BDC) refers to the two-quadrant operation of BDC. DC converter (DC-DC Converter). In daily life, many key loads require an uninterruptible power supply. In the UPS system, when the power supply (such as mains) is working normally, the battery is charged through the charging unit; Power supply, the charging and discharging unit in the system can be replaced by BDC. In solar battery array systems, BDC is also widely used, especially in aerospace power systems, where energy is mainly provided by battery packs and solar photovoltaic panels. When the sunlight is sufficient, the solar photovoltaic panels will store excess energy in the battery pack through the BDC in addition to providing the normal power consumption of the load; when the sun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156
Inventor 刘洋成王军峰
Owner 深圳市佳华利道新技术开发有限公司
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