The present application relates to a permanent magnet DC motor, which comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a housing and a magnetic cylinder, and the rotor assembly comprises a rotor; the rotor, the magnetic cylinder and the housing are sequentially arranged from inside to outside; the ratio of an angle corresponding to a commutation section of the surface magnetic curve of the magnetic cylinder to the corresponding angle of the surface magnetic curve of the corresponding magnetic pole is less than or equal to 15%; and the outer peripheral contour of the magnetic cylinder is based on a regular polygon, and curves are arranged at the connections of sides of the regular polygon to smoothly connect the sides of the regular polygon. The motor of the present application reduces the noise and vibration of the motor and improves its EMC level.

The purpose of the present invention is to provide an inverter-integrated electric compressor in which a DC power input system is simplified as a configuration for directly connecting a power source cable connector to a P-N terminal on a substrate, stress caused to the substrate can be reduced even in this case, and damage to the substrate and mounting components can be prevented. In the inverter-integrated electric compressor, a P-N terminal for inputting high-voltage DC power is provided on a main substrate of an inverter device, a power source cable can be connected by inserting a connector into the P-N terminal, the connector being provided to one end the terminal, an electrical component constituting the inverter device is placed on the opposite side of the P-N terminal to sandwich the main substrate therebetween, and the stress caused to the main substrate when the connector is inserted is borne by the electrical component.

The purpose of the present invention is to provide an inverter-integrated electric compressor in which a DC power input system is simplified as a configuration for directly connecting a power source cable connector to a P-N terminal on a substrate, stress caused to the substrate can be reduced even in this case, and damage to the substrate and mounting components can be prevented. In the inverter-integrated electric compressor, a P-N terminal for inputting high-voltage DC power is provided on a main substrate of an inverter device, a power source cable can be connected by inserting a connector into the P-N terminal, the connector being provided to one end the terminal, an electrical component constituting the inverter device is placed on the opposite side of the P-N terminal to sandwich the main substrate therebetween, and the stress caused to the main substrate when the connector is inserted is borne by the electrical component.

An interference suppression device (100) for an electric machine (1), wherein at least a subregion of a spring element (25), together with a region (38) of a section (17; 17a, 17b) which makes contact with a housing element (18), is arranged in a radial gap (40) between a component part (1) and the housing element (18).

A rotating electric machine includes a rotation body driven to rotate, an accommodation body housing the rotation body, a first power-supply member electrically connected to a positive electrode of a power source, a second power-supply member electrically connected to a negative electrode of the power source, an insulation layer contacting outer peripheral surfaces of the first and second power-supply members, and a conductive layer contacting the insulation layer on an opposite side of the insulation layer from the outer peripheral surfaces of the first and second power-supply members. The conductive layer is electrically connected to the accommodation body.

A rotating electric machine includes a rotation body driven to rotate, an accommodation body housing the rotation body, a first power-supply member electrically connected to a positive electrode of a power source, a second power-supply member electrically connected to a negative electrode of the power source, an insulation layer contacting outer peripheral surfaces of the first and second power-supply members, and a conductive layer contacting the insulation layer on an opposite side of the insulation layer from the outer peripheral surfaces of the first and second power-supply members. The conductive layer is electrically connected to the accommodation body.

The purpose of the present invention is to provide an inverter-integrated electric compressor which, even with the connector of a power source-side cable configured to be connected directly to a P-N terminal on a circuit board, reduces the stress on the circuit board by support by a high voltage electric component and can implement this support with high precision. This inverter-integrated electric compressor is configured such that a P-N terminal for inputting high-voltage DC power is provided on a main circuit board, a power source-side cable can be connected to said P-N terminal by inserting a connector provided on one end, a high-voltage electric component configuring the inverter device is arranged in the facing position on the side of the main circuit board opposite that of the P-N terminal, and the electric component is housed in a case and fixed by a resin member; and is further configured such that multiple protruding and receding portions are formed on the edge of the top opening of the case, and stress on the main circuit board when the connector is plugged in is received by the protruding portions abutting against the bottom surface of the main circuit board.

An electrical machine (10) and a method for producing such a machine, with a pole pot (15), in which a stator (16) and a rotor (18) are held, and axially on the open side of the pole pot (15) a connector housing (33) with an integrated terminal connector (37) is arranged, wherein the connector housing (33) has a circumferential wall (83), which lies axially against the pole pot (15), and the circumferential wall (83) has radial windows (110), in order to make electrical contacting of electrical contacts (30) of the connector housing (33) with electrical mating contacts (133) of the stator (16) possible after the placement of the connector housing (33) onto the pole pot (15).

An electrical machine (10) and a method for producing such a machine, with a pole pot (15), in which a stator (16) and a rotor (18) are held, and axially on the open side of the pole pot (15) a connector housing (33) with an integrated terminal connector (37) is arranged, wherein the connector housing (33) has a circumferential wall (83), which lies axially against the pole pot (15), and the circumferential wall (83) has radial windows (110), in order to make electrical contacting of electrical contacts (30) of the connector housing (33) with electrical mating contacts (133) of the stator (16) possible after the placement of the connector housing (33) onto the pole pot (15).

A motor and a ground structure of an EMC component and/or EMD component for the motor, wherein the ground structure includes a conductive housing, an insulating cover; the insulating cover is provided with an EMC component and/or EMD component, and an conductive terminal connected to the EMC component and/or EMD component; the ground structure further includes a conductive cover; the first pin of the EMC component and/or ESD component is connected to the conductive terminal; the second pin of the EMC component and/or ESD component is located between the conductive housing and the conductive cover, such that the EMC component and/or ESD component can still be grounded stably even when the insulating cover is deformed because of temperature and vibration.