Electric compressor
CN116345405BActive Publication Date: 2026-07-07TOYOTA INDUSTRIES CORP
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TOYOTA INDUSTRIES CORP
- Filing Date
- 2022-12-22
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
When the vehicle system stops, the capacitors of the electric compressor may suffer damage or reduced lifespan due to residual charge, and existing technologies have not been able to effectively solve this problem.
Method used
By introducing a switching mechanism into the electric compressor to control the connection and disconnection of the power path, the voltage between the capacitor and the converter circuit is ensured to be within the appropriate range, preventing charge buildup.
Benefits of technology
This effectively prevents damage to system equipment and reduced lifespan caused by accumulated charge in capacitors, ensuring the safety and reliability of the system.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116345405B_ABST
Abstract
The electric compressor (1) is provided with an electric motor (11), a filter circuit (13), a capacitor (C13), a converter circuit (12), a drive circuit (14), a power supply circuit (16), a switch (20) that connects or cuts off a power supply path that supplies electric power from the power supply circuit (16) to the drive circuit (14), and a control circuit (15) that controls the operation of the switch (20). The control circuit (15) connects the power supply path when the voltage between the capacitor (C13) and the converter circuit (12) is higher than the voltage between the power supply circuit (16) and the drive circuit (14), and cuts off the power supply path when the voltage between the capacitor (C13) and the converter circuit (12) is lower than the voltage between the power supply circuit (16) and the drive circuit (14).
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