Capacitor housing assembly and electric drive assembly

The capacitor housing assembly with partitioned cooling passages and a pressure relief mechanism addresses coolant leakage and pressure loss issues, improving cooling efficiency and power density in motor controllers.

JP7789947B2Active Publication Date: 2025-12-22JING JIN ELECTRIC TECH CO LTD
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Patent Information

Application Number
JP2024554873
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-03-16
Filing Date
2022-12-23
Publication Date
2025-12-22
Estimated Expiration
2042-12-23

AI Technical Summary

Technical Problem

The cooling channel structure in motor controllers has tolerance issues during processing, leading to potential water leakage and unstable coolant pressure loss, which affects the heat dissipation efficiency of power modules.

Method used

A capacitor housing assembly with double-sided cooling passages, including partition protrusions and grooves to prevent coolant leakage and stabilize flow, combined with communicating passages for uniform heat dissipation and a pressure relief mechanism to maintain smooth coolant flow.

Benefits of technology

The housing assembly achieves efficient double-sided cooling of capacitors and power devices, preventing coolant leakage and pressure loss, thereby enhancing cooling efficiency and power density while maintaining a compact structure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a housing assembly and an electric drive assembly for a capacitor, in which the housing assembly includes an upper cover plate, an intermediate housing, and a lower cover plate, the upper cover plate and / or the lower cover plate are provided with a first inlet and a first outlet, the upper cover plate and the lower cover plate form a first cooling passage between the upper side and the lower side of the intermediate housing, respectively, the outer side of the upper cover plate and the outer side of the lower cover plate form a second cooling passage between the power device, the first cooling passage includes a partition protrusion and a partition groove provided in the first cooling passage and extending in the longitudinal direction of the intermediate housing, the partition protrusion extends into the partition groove to partition the first cooling passage into a first inlet cooling passage and a first outlet cooling passage. The housing assembly can realize simultaneous cooling of the capacitor and the power device, and can also prevent water leakage between the water passages, thereby improving the cooling and heat dissipation effect.
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Citation Information

Patent Citations

  • Power electronics system with liquid cooling system

    CN103687439A

  • Capacitor with cooling structure and power device assembly

    CN214848203U