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Insulation inspection device and method

A technology for insulation inspection and insulation state, which is applied in electromechanical devices, measuring devices, pipe components, etc., and can solve problems such as foreign body entry and short circuit.

Pending Publication Date: 2020-10-20
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the case where there is a defect in the area of ​​the wire where the wires are not adjacent to each other, foreign matter may enter this area and cause a short circuit

Method used

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  • Insulation inspection device and method
  • Insulation inspection device and method
  • Insulation inspection device and method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0037] A first embodiment will be described with reference to the drawings. Such as Figure 1 to Figure 3 As shown, the insulation inspection device 1 according to the present embodiment is a device for inspecting the insulation state of a coating applied to a segment coil included in a stator coil of a rotating electric machine not shown. Note that the rotary electric machine is used, for example, in a motor generator mounted on an electric vehicle.

[0038] Figure 1 to Figure 3 It is a schematic diagram showing a part of the insulation inspection device 1 and a part of the plurality of wires 2 supported by the insulation inspection device 1 . A plurality of wires 2 are substantially U-shaped to form a segmented coil, and each wire includes two straight portions 21 and a mountain-shaped connecting portion 22 connecting the two straight portions 21 . However, Figure 1 to Figure 3 Only one straight portion 21 and half of the connecting portion 22 in each substantially U-s...

no. 2 approach

[0075] A second embodiment will be described. The second embodiment is the same as the first embodiment except that the structure of the insulation inspection device 1 is partially changed, and the rest of the structures of the first embodiment and the second embodiment are the same. Therefore, only portions different from the corresponding portions of the first embodiment will be described.

[0076] Such as Figure 8 As shown, the insulation inspection device 1 according to the second embodiment includes an upper jig switch 91 disposed in the middle of the wire connecting the first terminal 51 of the power supply unit 5 and the upper jig 32 . The upper jig switch 91 is a switch capable of electrically connecting or disconnecting the first terminal 51 and the upper jig 32 .

[0077] In addition, the insulation inspection device 1 includes an intermediate jig switch 92 arranged in the middle of the wire connecting the first terminal 51 of the power supply unit 5 and the inter...

no. 3 approach

[0083] A third embodiment will be described. The third embodiment is the same as the second embodiment except that the structure of the insulation inspection device 1 is partially changed, and the rest of the structures of the second embodiment and the third embodiment are the same. Therefore, only parts different from the corresponding parts of the second embodiment will be described.

[0084] Such as Figure 9 As shown, the installation base 4 included in the insulation inspection device 1 according to the third embodiment also has a plurality of divided installation bases 41 . Such as Figure 9 As shown by the arrow M in the figure, each of the plurality of split mounting bases 41 is configured to be movable to the state where the split mounting base 41 is in contact with the end 23 of the corresponding wire 2, and the split mounting base 41 is away from the corresponding wire 2. The state of the end 23.

[0085] In the case of inspecting wire insulation, a predetermine...

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Abstract

The invention provides an insulation inspection device and method. The insulation inspection device for accurately inspecting films of wires for an insulation state in a short time before the wires are assembled into a core of an armature in a rotating electric machine, a power supply unit (5) includes a first terminal (51) and a second terminal (52). A support member (3) supports a plurality of wires (2) covered with films before the wires are assembled into a core of an armature in a rotating electric machine, and the support member is electrically connected to the first terminal (51). Areasof ends (23) of a plurality of the wires from which areas the films are peeled off are installed on an installation base (4), and the installation base (4) is electrically connected to the second terminal (52). A discharge detection unit (6) detects discharge occurring between the support member (3) and each of the wires (2) when the power supply unit applies a voltage to the first terminal or the second terminal.

Description

technical field [0001] The present invention relates to an insulation inspection device and an insulation inspection method for inspecting an insulation state of a coating of a wire included in a rotating electric machine. Background technique [0002] There is known a rotating electrical machine used, for example, in a motor generator mounted on an electric vehicle. This type of rotating electric machine includes stator coils with segmented coils. [0003] JP2013-102569A describes a method of manufacturing a rotating electrical machine. In this manufacturing method, first, a plurality of U-shaped wires for forming segmented coils are combined together into a ring shape and fixed using a temporary assembly jig. Then, a plurality of wires fixed using a temporary assembly jig are inserted into the slots of the stator core. Subsequently, the regions of the plurality of wires protruding from the slots of the stator core are twisted, and then the ends of the plurality of wires...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1272H02K15/00H02K15/04G01R31/346G01N27/83H02K1/16G01N27/9006G01N27/902G01N27/82G01N27/72G01N2291/2636G01N27/87F16L2101/30F16L55/38
Inventor 小坂祐章
Owner DENSO CORP