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Electric compressor

專利號
US12178000B2
公開日期
2024-12-24
申請人
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI（JP Kariya）
發(fā)明人
Satoshi Okada; Katsuya Usami; Yoshifumi Tada; Yuta Wato
IPC分類
H05K7/14; H02K7/18; H02K11/30; H05K1/02
技術(shù)領(lǐng)域
board,circuit,insertion,hole,inverter,busbars,fastening,housing,51b,holes
地域： Kariya

摘要

An electric compressor includes an inverter portion that includes a circuit board, a busbar fixed to the inverter housing and connecting an external power supply to the circuit board, a noise reduction circuit mounted on the circuit board, a first fastener fastening the circuit board to the inverter housing, and a second fastener fastening the busbar to the circuit board. The circuit board includes a first fastening hole through which the first fastener is inserted, a second fastening hole that is disposed adjacent to the first fastening hole and through which the second fastener is inserted, and a slit extending between the first fastening hole and the second fastening hole from a peripheral edge of the circuit board. The first fastener electrically connects the circuit board as a ground of the noise reduction circuit to the inverter housing.

說明書

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Japanese Patent Application No. 2021-045477 filed on Mar. 19, 2021, the entire disclosure of which is incorporated herein by reference.

BACKGROUND ART

The present disclosure relates to an electric compressor.

As an example for conventional electric compressors, an electric compressor disclosed in Japanese Patent Application Publication No. 2020-122426 is known. The electric compressor disclosed in the above-described Patent Application Publication includes a motor, an inverter device, a housing including a partition wall, and a connection member. The inverter device includes a circuit board. The partition wall of the housing divides a motor chamber accommodating the motor from an inverter chamber accommodating the inverter device. The connection member includes a feedthrough terminal having a motor-side end disposed in the motor chamber and an inverter-side end disposed in the inverter chamber, and a busbar electrically connecting the circuit board with the inverter-side end. The circuit board is fixed to the inverter chamber with bolts.

權(quán)利要求

1
What is claimed is:1. An electric compressor to be mounted on a vehicle configured to compress a refrigerant and discharge the compressed refrigerant, comprising:An electric motor configured to drive the electric compressor,an inverter portion configured to control and drive the electric motor; andan inverter housing accommodating the inverter portion, the inverter portion including:a circuit board;a busbar fixed to the inverter housing and electrically connecting an external power supply to the circuit board;a noise reduction circuit mounted on the circuit board and configured to reduce a noise component contained in current flowing through the busbar;a first fastener fastening the circuit board to the inverter housing; anda second fastener fastening the busbar to the circuit board,wherein the circuit board includes:a first fastening hole through which the first fastener is inserted;a second fastening hole through which the second fastener is inserted; anda slit extending between the first fastening hole and the second fastening hole from a peripheral edge of the circuit board so as to have a length that is equal to or greater than a distance between the first fastening hole and the second fastening hole, whereinthe slit extends from the peripheral edge in a direction toward the noise reduction circuit,a distance between the first fastening hole and the noise reduction circuit is shorter than a distance between the second fastening hole and the noise reduction circuit, andthe first fastener electrically connects the circuit board as a ground of the noise reduction circuit to the inverter housing.2. The electric compressor according to claim 1, whereinan insulation member is interposed between the busbar and the inverter housing.3. The electric compressor according to claim 1, wherein the external power supply is a battery.4. The electric compressor according to claim 3, whereinthe circuit board has a first surface and a second surface,the noise reduction circuit is mounted on the first surface of the circuit board and includes a first filter circuit and a second filter circuit, anddirect current power from the battery is supplied to the circuit board of the inverter portion, and noise components contained in the direct current flowing through the busbar and the circuit board is reduced by the noise reduction circuit and absorbed into the inverter housing by the first fastener.
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