Inverter modules and inverter-integrated electric compressors
A technology for inverters and motors, applied in machines/engines, liquid-variable-capacity machines, and pump combinations for elastic fluid rotary piston/oscillating pistons, etc. It is impossible to cut off the noise interference of the control board, and the electromagnetic noise cannot be cut off, so as to ensure the vibration resistance strength, prevent the malfunction, and ensure the insulation and moisture resistance.
Active Publication Date: 2017-03-15
MITSUBISHI HEAVY IND LTD
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Problems solved by technology
However, only in this structure, the noise interference on the control board cannot be cut off, that is, the propagation of electromagnetic noise from the frame ground connected to the high-voltage system to the low-voltage circuit side cannot be cut off, which is very disadvantageous as a noise countermeasure
[0009] In addition, in the technical solution of Patent Document 2, a shielding plate is provided between the low-voltage control board and the high-voltage circuit for motor driving, and a gel material filling device that also performs degassing is provided on the shielding plate. The hole structure facilitates the filling of the resin gel material and prevents noise interference between the low-voltage control board and the high-voltage circuit for driving the motor. However, it cannot cut off the noise interference on the low-voltage control board, that is, from the Propagation of electromagnetic noise from the frame ground connected to the high-voltage system to the low-voltage circuit side is hardly perfect as a noise countermeasure
Method used
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[0043] Below, refer to Figure 1 to Figure 5 One embodiment of the present invention will be described.
[0044] figure 1 A side view showing an inverter-integrated electric compressor according to an embodiment of the present invention. The inverter-integrated electric compressor 1 has a casing 2 constituting an outer casing. The housing 2 is constructed by integrally fastening a motor housing 3 accommodating an unillustrated electric motor and a compressor housing 4 accommodating an unillustrated compression mechanism with bolts 5 . The motor casing 3 and the compressor casing 4 are pressure-resistant containers, which are aluminum die-casting parts.
[0045] An unillustrated electric motor housed inside the casing 2 is connected to the compression mechanism via a motor shaft, and the compression mechanism is driven by the rotation of the electric motor. On one end side of the motor housing 3 ( figure 1 The right side of the inverter-integrated electric compressor 1) is...
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The present invention has an object to provide an inverter module and an inverter integrated electric compressor capable of reliably suppressing noise interference on a control circuit board and facilitating filling with a resin gel material. Provided is an inverter module including a power system circuit board and a control circuit board (30) that are integrated through a resin case, in which an insulating through hole (47) is provided in a region between: a frame ground (42) connected to a high voltage system formed on the control circuit board (30); and a low voltage circuit (46) adjacent to the frame ground (42).
Description
technical field [0001] The present invention relates to a preferred inverter module and an inverter-integrated electric compressor suitable for a vehicle air conditioner, in which an inverter device is integrated into a casing of an electric compressor. Background technique [0002] An inverter-integrated electric compressor in which an inverter device is integrally incorporated is known as a compressor for an air conditioner mounted on a hybrid vehicle, an electric vehicle, or the like. This inverter-integrated electric compressor has a structure in which an inverter housing (inverter box) is provided on the outer periphery of the casing in which the motor and the compression mechanism are built, and the inverter housing (inverter box) that will be powered by the power supply is installed inside. The supplied DC power is converted into AC power and applied to the inverter unit of the motor through glass-sealed terminals. [0003] Inverter devices generally include: a power...
Claims
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IPC IPC(8): F04B35/04F04C23/00F04B39/06H02K11/33H02M7/00
CPCF04B35/04F04B39/06F04C23/008F04C2240/808F04C2270/12H02K11/33H02M7/003
Inventor 服部诚浅井雅彦丹羽和喜
Owner MITSUBISHI HEAVY IND LTD