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High voltage battery charger power module and circuit

A power module and storage battery technology, applied in the direction of output power conversion device, DC power input conversion to DC power output, AC power input conversion to DC power output, etc., can solve the problem of high cost, difficult implementation and lack of versatility of IGBT and other problems, to achieve the effect of reasonable layout, meeting heat dissipation requirements, and saving design and development investment

Active Publication Date: 2020-01-31
CRRC QINGDAO SIFANG ROLLING STOCK RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is to customize special high insulation withstand voltage IGBT with the manufacturer, but the cost of custom IGBT is high, it is not universal, and it is difficult to implement

Method used

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  • High voltage battery charger power module and circuit
  • High voltage battery charger power module and circuit
  • High voltage battery charger power module and circuit

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Embodiment Construction

[0035] Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0036] The invention provides a power module and circuit of a high-voltage battery charger, which is used for a high-voltage battery charger with a multi-module series topology. The multi-module topology can reduce the power of a single module, reduce the voltage stress of power devices, and realize multi-module interleaved control , to reduce output ripple, is the ideal topology. But even if multiple modules are connected in series, the insulation withstand voltage of the power device IGBT still needs to meet the standard requirements of the DC1500V system. The insulation withstand voltage of the current 1700V class IGBT can only reach 4000V, which cannot meet the standard requirements of the DC1500V system. Therefore, the present invention provides a high-voltage battery charger power module on the basis of comprehensive consideration of insul...

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Abstract

The invention relates to a high-voltage battery charger power module and a circuit. The high-voltage battery charger power module comprises a heat sink assembly, a front panel assembly and a support column, wherein the heat sink assembly and the front panel assembly are connected by the support column; the heat sink assembly comprises an insulated gate bipolar transistor (IGBT), an aluminum nitride ceramic substrate, a nested insulator and a heat sink; the front panel assembly includes a voltage equalizing capacitor and a low-inductivity busbar; the voltage equalizing capacitor and the IGBT are connected through the low-inductivity busbar. The nested insulator is embedded in the heat sink and is used for the electrical insulation of the IGBT. The aluminum nitride ceramic substrate is mounted between the heat sink embedded in the nested insulator and the IGBT and is used for the insulation and voltage resistance of the IGBT and the heat sink. The power module of the invention can be applied to a high-voltage battery charger with a multi-module series structure topology, solves the technical problem of the insulation and voltage resistance of the IGBT and a heat dissipation requirement, and is designed according to a platform, and has a compact structure, high integration, and reasonable layout.

Description

technical field [0001] The invention belongs to the technical field of power supply structure, and in particular relates to a power module and circuit of a high-voltage storage battery charger. Background technique [0002] The battery charger is an essential key component of the rail transit vehicle auxiliary system, which provides a stable DC power supply for the low-voltage DC load of the train, and charges the battery according to the characteristics of the battery. For rail transit vehicles with a DC1500V power supply system, the input voltage of the battery charger is generally AC380V output by the auxiliary inverter, and then after rectification and DC / DC conversion, the output stable DC110V or DC24V power supply. There are few applications for DC1500V direct input high-voltage battery chargers. However, if the battery charger can be directly input with DC1500V voltage, the independence of the battery charger can be improved, the normal operation of the battery charg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/00H05K7/20H02M3/335
CPCH02M3/33569H02M7/003H05K7/209
Inventor 王旭阳王博曾凡飞徐先伟刘天宇邸峰韩国风
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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