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Electronic component fixation structure and current detection device

A technology for electronic components and fixed structures, applied in the field of fixed structures, can solve the problems of difficulty in realizing small size and high vibration resistance of power conversion devices, low strength, and insufficient vibration resistance strength.

Pending Publication Date: 2021-05-18
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the structure in which the wire package in which the Hall element is sealed is mounted on the substrate as in the conventional structure, the sensor part is enlarged due to ensuring the insulation distance of the exposed part of the wire, and the lead part connected to the wiring board is large. The strength is low, so the anti-vibration strength is not enough, and the detection accuracy may be affected by the vibration of the installed vehicle when running, and it is difficult to realize the small and high anti-vibration pursued by the power conversion device

Method used

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  • Electronic component fixation structure and current detection device
  • Electronic component fixation structure and current detection device
  • Electronic component fixation structure and current detection device

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Embodiment approach 1

[0047] Embodiments of the present application will be described below using the drawings. In addition, in each figure, the same code|symbol is attached|subjected to the same or corresponding part, and it demonstrates.

[0048] figure 1 It is a developed perspective view showing the overall structure of the power conversion device using the electronic component fixing structure of Embodiment 1, figure 2 and image 3 yes means figure 1 A perspective view of the main parts of the power conversion device in . In the figure, the power conversion device 100 is configured to include: an upper case 1a and a lower case 1b that house the entire body; a power module 2 that generates an output for driving a motor; The wiring substrate 3, the above-mentioned wiring substrate 3 connects the above-mentioned power module 2 and other electronic components, and forms the control circuit of the power module 2; the current detection device 4, the above-mentioned current detection device 4 de...

Embodiment approach 2

[0064] Figure 12 It is a front view and a side sectional view showing the configuration of main parts of the current detection device according to the second embodiment.

[0065] In the first embodiment described above, the holding member 11 is configured such that the pair of protrusions 11e are press-fitted into the wiring board 3, but in the second embodiment, the holding member 11 is formed by insert molding a steel plate to form the protrusions 11e. , and by brazing the protruding portion 11 e to the wiring board 3 , the holding member 11 can be more firmly fixed to the wiring board 3 .

[0066] In addition, in the above-mentioned embodiment, the case where the plurality of connection terminals 10b of the Hall IC 10 are arranged linearly has been described, but the plurality of connection terminals 10b are arranged in a direction perpendicular to the virtual line connecting the pair of protrusions 11e. The same effect can be obtained even if the connection terminals 10b...

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Abstract

The invention provides an electronic component fixation structure and a current detection device, and aims to ensure small size and high vibration resistance of the current detection device installed on a vehicle. The electronic component fixation structure disclosed in the present application includes a holding member which, being made of an insulating material, is formed of a storing portion which stores a main body portion of an electronic component, a protection portion which surrounds a plurality of connection terminals of the electronic component, and a pair of protrusion portions which protrude upward from the respective central portions of a pair of side walls of the protection portion; and a wiring substrate on which to connect between electronic components, wherein the pair of protrusion portions of the holding member are engaged with the wiring substrate, and the plurality of connection terminals of the electronic component are solder connected to the wiring substrate.

Description

technical field [0001] The present application relates to a fixing structure of an electronic component used in a vehicle-mounted power conversion device. Background technique [0002] In a vehicle using an electric motor as a power source, a power conversion device such as an inverter or a converter is installed to drive the electric motor with electric power from a battery. In the driving circuit of the above-mentioned power conversion device, a power module for vehicles is used, and since the required power is supplied by driving the elements, a current sensor is installed to detect the output current to the motor. [0003] Among the current sensors installed in the above-mentioned power conversion device, there is known a current sensor that is configured to surround a conductor through which current flows with a core body having a gap in a part of the circumferential direction, and to arrange a gap for the gap. A Hall element (magnetic detection element) that detects t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/20
CPCG01R15/202G01R15/207H02K11/27H02K2211/03H02K11/33
Inventor 野口雅弘
Owner MITSUBISHI ELECTRIC CORP