Stator coil resistance testing method
The stator coil resistance testing method clamps the stator from above and below with multi-point probe units to avoid damaging the coil ends, ensuring accurate resistance measurement without insulation failure.
JP2026084970APending Publication Date: 2026-05-22TOYOTA JIDOSHA KK
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- TOYOTA JIDOSHA KK
- Filing Date
- 2024-11-12
- Publication Date
- 2026-05-22
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Figure 2026084970000001_ABST
Abstract
To provide a stator coil resistance testing method that can perform testing without damaging areas other than the inspection hole. [Solution] The stator coil resistance testing method uses a multi-point resistance measuring device that has multiple upper probes 111-1 to 111-n supported by springs with a load of 40N or more, and multiple lower probes 121-1 to 121-n supported by springs with a load of 40N or more. The lower probes 121-1 to 121-n lift the coil 21 and stator core 22 from below the coil 21 and stator core 22. After the coil 21 and stator core 22 reach the position of the core end, pressure is applied with the upper probes 111-1 to 111-n to maintain the position of the coil 21. The upper probes 111-1 to 111-n and the lower probes 121-1 to 121-n repeatedly move the stator core 22 up and down. When the vertical load exceeds a predetermined value, the movement of the stator core 22 is stopped and the resistance value is measured.
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