Power supply unit for power conversion circuit

A technology of power conversion circuit and power conversion device, which is applied in the direction of battery circuit device, circuit device, output power conversion device, etc., can solve problems such as defective semiconductor modules

Pending Publication Date: 2022-04-01
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a malfunction of the semiconductor module due to the surge voltage

Method used

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  • Power supply unit for power conversion circuit
  • Power supply unit for power conversion circuit
  • Power supply unit for power conversion circuit

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0029]

[0030] First, based on figure 1 The in-vehicle system 100 to which the bus bar module 700 is applied will be described. The in-vehicle system 100 constitutes a hybrid system.

[0031] The in-vehicle system 100 has a battery 200 , a power conversion device 300 , and a motor 400 . Furthermore, the in-vehicle system 100 has an engine 500 and a power distribution mechanism 600 . The power conversion device 300 includes a bus bar module 700 . Motor 400 has first MG 401 and second MG 402 . MG is an abbreviation for motor generator.

[0032] Furthermore, the in-vehicle system 100 has a plurality of ECUs. The plurality of ECUs described above transmit and receive signals with each other via the bus wiring. Multiple ECUs coordinate to control the hybrid vehicle. The power operation and power generation (regeneration) of the motor 400 , the output of the engine 500 , and the like are controlled according to the SOC of the battery 200 through cooperative control of a pl...

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PUM

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Abstract

The power circuit energizing section has a bus bar module (700) and a conductive fixing bolt (752). A bus bar module is provided with: a conductive P bus bar (303) and N bus bar (304) that are connected to switching elements included in a power conversion device; and an insulating terminal block (710) on which the bus bars are provided. The fixing bolt fixes the terminal block to a housing (750) in which the switching element is housed. A head portion of the fixing bolt is separated from and opposed to the P bus bar in an axial direction in which a shaft portion of the fixing bolt extends.

Description

[0001] Cross-citation of related applications [0002] This application is based on Japanese Patent Application No. 2019-154983 filed on August 27, 2019, the contents of which are cited here. technical field [0003] The disclosure described in this specification relates to a power supply unit for a power conversion circuit connected to a switching element of a power conversion circuit. Background technique [0004] As shown in Patent Document 1, there is known a power conversion device including a semiconductor module, a DC bus bar, a fixing table, and a case. A DC bus bar is connected to the semiconductor module. The DC bus bar is fixed to the case via the fixing table. [0005] prior art literature [0006] patent documents [0007] Patent Document 1: Japanese Patent Laid-Open No. 2018-207718 [0008] In the case of the structure described in Patent Document 1, a current corresponding to the control of the semiconductor module flows through the DC bus bar. When this...

Claims

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Application Information

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IPC IPC(8): H02M7/219H02M1/32H05K7/20H02J7/10H02J7/14
CPCH02M3/155H02M7/003H02M7/5387H02M1/007B60L53/20H02M3/158H02M7/53871H02P27/08H01R25/162
Inventor桧田健史郎木内裕也
OwnerDENSO CORP