JP6838853B2 - Rotating electrical system - Google Patents

Description

The present invention relates to a rotary electric machine system that integrally includes a rotary electric machine and a semiconductor module connected to the rotary electric machine.

Patent Document 1 discloses a rotary electric machine system including a motor as a rotary electric machine and an inverter device that converts a direct current into an alternating current and supplies the motor to the motor.

Japanese Unexamined Patent Publication No. 2011-182480

In such a rotary electric machine system, the motor and the semiconductor module of the inverter device are electrically connected via a connecting member composed of a bus bar or the like. When the motor is driven, the coil or the like wound around the stator of the motor generates heat, and the heat is transferred to the semiconductor module of the inverter device or the current sensor through the connecting member. If the amount of heat transferred from the motor side to the inverter device side becomes large, electrical components such as semiconductor modules may be thermally deteriorated.

In order to avoid the above-mentioned thermal deterioration, it is conceivable to add a cooling device for cooling the connecting member or the like to the rotary electric machine system. However, if a dedicated cooling device for cooling the connecting member or the like is added to the rotary electric machine system, there arises a problem that the rotary electric machine system is enlarged or the cost is increased by the amount of the addition of the cooling device.

An object of the present invention is to provide a rotary electric machine system capable of suppressing thermal deterioration of electric parts such as semiconductor modules without causing an increase in the size of the system.

According to an aspect of the present invention, a housing having a first storage chamber and a second storage chamber, a rotary electric machine housed in the first storage chamber, and a rotary electric machine housed in the second storage chamber and electrically with the rotary electric machine. A rotary electrical system that integrally includes a semiconductor module to be connected, is arranged so as to be interposed between the bottom of the second accommodation chamber and the semiconductor module, has a flow path inside, and passes through the flow path. A cooler for cooling the semiconductor module with a refrigerant, a terminal block mounted on the same plane as the semiconductor module with respect to the cooler, and a connecting member having a conductive bus bar are provided, and the bus bar is bent and formed. The two bent surfaces are fixed to the terminal block in contact with the terminal block, and electrically connect the rotary electric machine and the semiconductor module.

According to the present invention, since the connecting member is cooled by using the cooler for cooling the semiconductor module, it is possible to suppress the heat generated by the rotary electric machine from being transferred to the semiconductor module side through the connecting member. Since the cooler for cooling the semiconductor module is used together as the cooling device for the connecting member, it is possible to suppress the enlargement of the system as compared with the case where the cooling device dedicated to the connecting member is added. This makes it possible to suppress thermal deterioration of electrical components such as semiconductor modules without causing the system to become large in size.

FIG. 1 is a schematic configuration diagram of a rotary electric machine system according to the first embodiment. FIG. 2 is a perspective view of a rotary electric machine system in a state where a semiconductor module is not installed. FIG. 3 is a perspective view of a rotary electric machine system in a state where a semiconductor module is installed. FIG. 4 is a partial vertical sectional view of the rotary electric machine system. FIG. 5 is a partial vertical cross-sectional view of the rotary electric machine system in the vicinity of the connecting member. FIG. 6 is a partial vertical sectional view of the rotary electric machine system according to the second embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings and the like.

(First Embodiment)
The rotary electric machine system 100 according to the first embodiment will be described with reference to FIG. FIG. 1 is a schematic configuration diagram of a rotary electric machine system 100 according to the first embodiment.

The rotary electric machine system 100 shown in FIG. 1 is a system mounted on an electric vehicle, a hybrid vehicle, or the like.

The rotary electric machine system 100 includes a battery 20 as a power source, a motor 30 as a drive source for driving wheels, and an inverter 10 electrically connected to the battery 20 and the motor 30. The rotary electric system 100 uses the electric power discharged from the battery 20 to drive the motor 30, and uses the electric power generated by the motor 30 to charge the battery 20.

The battery 20 is a rechargeable and dischargeable secondary battery, and is composed of, for example, a lithium ion battery.

The motor 30 is a three-phase AC motor (rotary electric machine) including a U-phase terminal, a V-phase terminal, and a W-phase terminal. The motor 30 normally functions as a drive source and during regeneration as a generator.

The inverter 10 is a power conversion device that is electrically connected to the battery 20 and the motor 30. The inverter 10 normally converts the DC power of the battery 20 into AC power and supplies the AC power to the motor 30, and during regeneration, converts the AC power from the motor 30 into DC power and supplies the DC power to the battery 20. ..

The inverter 10 includes a positive electrode side power supply line 11 and a negative electrode side power supply line 12, and the positive electrode side power supply line 11 is connected to the positive electrode of the battery 20 via a relay switch 15. The negative electrode side power supply line 12 is connected to the negative electrode of the battery 20.

A capacitor 14 for smoothing the voltage between the battery 20 and the inverter 10 is connected between the positive electrode side power supply line 11 and the negative electrode side power supply line 12. The capacitor 14 is connected in parallel with the battery 20.

The inverter 10 further includes a semiconductor module 13 including six switching elements S1 to S6. Each of the switching elements S1 to S6 of the semiconductor module 13 (power module) is composed of an insulated gate bipolar transistor (IGBT) and a rectifying diode that allows current to flow in the direction opposite to that of the IGBT.

Between the positive side power supply line 11 and the negative side power supply line 12, switching elements S1 and S2 are connected in series as U-phase elements, and switching elements S3 and S4 are connected in series as V-phase elements for W-phase. Switching elements S5 and S6 are connected in series as elements.

The U-phase terminal of the motor 30 is connected to a connection point to which the switching element S1 and the switching element S2 are connected. Further, the V-phase terminal of the motor 30 is connected to the connection point where the switching element S3 and the switching element S4 are connected, and the W-phase terminal of the motor 30 is the connection point where the switching element S5 and the switching element S6 are connected. Connected to.

The six switching elements S1 to S6 described above are on / off controlled based on a control signal from the controller 50. For example, the controller 50 is composed of a microcomputer including a central arithmetic unit (CPU), a read-only memory (ROM), a random access memory (RAM), and an input / output interface (I / O interface).

The detection signals of the current sensor 51 that detects the U-phase current, the current sensor 52 that detects the V-phase current, and the current sensor 53 that detects the W-phase current are input to the controller 50. Further, in addition to these signals, detection signals from a voltage sensor that detects the voltage of the battery 20, a rotation speed sensor that detects the rotation speed of the motor 30, and the like are input to the controller 50.

The controller 50 generates a pulse width modulation signal (PWM signal) based on the above-mentioned detection signal, a torque command value from a vehicle controller (not shown), and the like, and the switching elements S1 to S6 of the semiconductor module 13 are generated by these PWM signals. Switching control.

As shown in FIGS. 2 and 3, in the rotary electric machine system 100, a motor 30 as a rotary electric machine and an inverter 10 electrically connected to the motor 30 are integrally provided via a housing 60. Be done.

As shown in FIG. 2, the housing 60 is a case member cast from an aluminum alloy or the like. The housing 60 includes a motor accommodating chamber 61 as a first accommodating chamber for accommodating the motor 30, and an inverter accommodating chamber 62 as a second accommodating chamber for accommodating the inverter 10.

The motor accommodating chamber 61 is formed as a cylindrical space corresponding to the outer shape of the motor 30, and the inverter accommodating chamber 62 is formed as a box-shaped space composed of a bottom portion 62A and a side wall portion 62B. The motor accommodating chamber 61 and the inverter accommodating chamber 62 are arranged side by side in the vertical direction. After the inverter 10 is attached to the inverter accommodating chamber 62, the upper opening of the inverter accommodating chamber 62 is closed by a lid member (not shown).

The motor 30 includes a stator 31 fixed to the inner peripheral surface 61A of the motor accommodating chamber 61, and a rotor 32 rotatably provided with respect to the stator 31 inside the stator 31.

The rotor 32 includes a rotating shaft 32A and a rotor core 32B attached to the outer periphery of the rotating shaft 32A. The rotor core 32B is a cylindrical member formed by laminating a plurality of electromagnetic steel plates, and a plurality of permanent magnets are provided inside the rotor core 32B.

The stator 31 is formed in an annular shape so as to surround the outer circumference of the rotor 32. The stator 31 is fixed in the motor accommodation chamber 61 so that the outer peripheral surface of the stator 31 is in close contact with the inner peripheral surface 61A of the motor accommodation chamber 61 by using a technique such as shrink fitting. The stator 31 has a plurality of teeth portions, and a U-phase coil, a V-phase coil, and a W-phase coil are wound around the teeth portions in order.

As shown in FIG. 3, the inverter 10 is housed in the inverter housing chamber 62 of the housing 60. That is, the semiconductor module 13, the capacitor 14, the controller 50, and the like that constitute the inverter 10 are arranged in the inverter accommodating chamber 62.

The semiconductor module 13 including the switching elements S1 to S6 is installed on the bottom portion 62A of the inverter accommodating chamber 62 via the cooler 70. In order to facilitate the assembly of the rotary electric machine system 100, the cooler 70 is fixed to the bottom 62A of the inverter accommodating chamber 62 via a fixing mechanism such as a bolt with the semiconductor module 13 attached. The cooler 70 is a cooling mechanism that cools the semiconductor module 13 and the stator 31 that generate heat during switching control.

In this way, the semiconductor module 13 is housed in the inverter accommodating chamber 62 in a state of being mounted on the cooler 70. The semiconductor module 13 and the motor 30 are electrically connected via U-phase, V-phase, and W-phase connecting members 41, 42, and 43. The U-phase, V-phase, and W-phase connecting members 41, 42, and 43 are provided with current sensors 51, 52, and 53 corresponding to each phase.

On one end side of the housing 60, the side wall portion 62B of the inverter accommodating chamber 62 has a through hole 62C, and both ends of the motor accommodating chamber 61 are formed as open ends. The U-phase, V-phase, and W-phase connecting members 41, 42, and 43 are connected to the motor 30 and the semiconductor module 13 through the through hole 62C of the side wall portion 62B and the open end of the motor accommodating chamber 61.

In the rotary electric machine system 100, the housing 60 is fixed to the vehicle body frame so that the axial direction of the rotary shaft 32A of the motor 30 is orthogonal to the front-rear direction of the vehicle. The housing 60 is attached to the vehicle body frame via mount members (not shown) provided at the mount positions M1 and M2 below the housing 60. The straight line connecting these mount positions (centers of the mount members) is set to be parallel to the rotation shaft 32A. In the rotary electric machine system 100, two mount positions are set in the rotation axis direction (vehicle width direction), but two or more mount positions may be set.

The cooling mechanism of the rotary electric machine system 100 will be described with reference to FIG. FIG. 4 is a partial vertical sectional view of the rotary electric machine system 100.

As shown in FIG. 4, the rotary electric machine system 100 includes a cooling passage 63 and a cooler 70 as a cooling mechanism.

The cooling passage 63 is formed in the housing 60 around the stator 31 of the motor 30. The cooling passage 63 extends in the rotation axis direction along the outer circumference of the stator 31. The cooling passage 63 is a passage through which cooling water (refrigerant) flows, and the stator 31 in the vicinity of the cooling passage 63 is cooled by the cooling water flowing in the cooling passage 63. As described above, the cooling passage 63 is configured as a cooling mechanism for cooling the stator 31 of the motor 30.

A plurality of cooling passages 63 may be provided around the stator 31, or may be configured as a single passage extending along the periphery of the stator 31. The refrigerant flowing in the cooling passage 63 is not limited to cooling water, and may be a liquid such as oil or a gas such as air.

On the other hand, the cooler 70 is arranged so as to be interposed between the bottom portion 62A of the inverter accommodating chamber 62 and the semiconductor module 13. The cooler 70 is a rectangular plate-shaped member, and has a plurality of flow paths 71 inside the cooler 70. The flow path 71 is formed as a passage extending in the rotation axis direction of the motor 30.

The plurality of flow paths 71 are provided side by side in the vehicle front-rear direction (motor width direction) orthogonal to the rotation axis direction, and are arranged in parallel with each other. The flow path 71 of the cooler 70 is a passage through which cooling water (refrigerant) flows, and the cooling water flows through the flow path 71 to cool the semiconductor module 13 of the inverter 10 and the stator 31 of the motor 30.

As described above, the cooler 70 is configured as a cooling mechanism capable of cooling not only the semiconductor module 13 of the inverter 10 located above the cooler 70 but also the stator 31 of the motor 30 located below the cooler 70. Has been done. Since the cooler 70 cools the semiconductor module 13 and the stator 31, the volume and shape of the flow path 71 are designed so that both members of the semiconductor module 13 and the stator 31 can be cooled. The flow path 71 may be configured as a single passage extending along the lower surface of the semiconductor module 13 while meandering.

In the present embodiment, in the cooler 70 and the cooling passage 63, after the cooling water flowing into the flow path 71 from the inlet portion of the cooler 70 passes through the flow path 71, the cooling passage 63 passes through the outlet portion of the cooler 70. It is configured to flow into. Then, the cooling water that has passed through the cooling passage 63 is cooled by a heat radiating mechanism (not shown) and is supplied to the cooler 70 again. In this way, the cooling water that passes through the flow path 71 of the cooler 70 and the cooling water that passes through the cooling passage 63 are shared. Since the allowable upper limit temperature of the semiconductor module 13 is lower than the allowable upper limit temperature of the stator 31, when the cooling water is shared, the cooling water cooled by the heat dissipation mechanism is supplied to the cooler 70 before the cooling passage 63. Is desirable.

Although the cooling water is shared in the present embodiment, the cooling water may be separately supplied to the cooler 70 and the cooling passage 63 by using different cooling water supply sources.

As described above, the cooling mechanism of the rotary electric machine system 100 includes a cooling passage 63 and a cooler 70. Since the cooler 70 cools both the semiconductor module 13 and the stator 31, the cooling passage 63 has a housing 60 so as to avoid a portion (directly below the cooler 70) located between the cooler 70 and the stator 31. It is provided in. As a result, it is possible to avoid overlapping the cooling range of the cooling path 63 and the cooling range of the cooler 70.

Next, the U-phase, V-phase, and W-phase connecting members 41, 42, and 43 that connect the semiconductor module 13 and the motor 30 will be described with reference to FIGS. 3 and 5. Since the connection structure itself between the semiconductor module 13 and the motor 30 by the connecting members of each phase is the same, the U-phase connecting member 41 will be mainly described below.

As shown in FIGS. 3 and 5, the U-phase connecting member 41 includes a bus bar 41A and a terminal block 41B.

The bus bar 41A is configured as a conductive plate that is bent and formed in an L shape. One end of the bus bar 41A is connected to a connection terminal 33U (see FIG. 5) provided at the end of the U-phase coil of the motor 30, and the other end of the bus bar 41A is a connection portion 13U for the U-phase of the semiconductor module 13 (FIG. 3). See) is connected. A current sensor 51 for detecting the U-phase current is attached to the bus bar 41A.

The terminal block 41B is a rectangular block member and has a higher thermal conductivity than the housing 60. The terminal block 41B is attached to the upper surface of the cooler 70 via the insulating sheet 80.

Further, the terminal block 41B is provided with a screw hole into which the screw portion of the bolt 90 is screwed. By fastening the bolt 90 to the screw hole of the terminal block 41B, the bus bar 41A and the connection terminal 33U of the motor 30 are fixed to the terminal block 41B in contact with each other. The bus bar 41A is bent so as to be along the side surface and the upper surface of the terminal block 41B, and more specifically, to be in contact with the side surface and the upper surface of the terminal block 41B.

Similar to the U-phase connecting member 41 described above, the V-phase connecting member 42 also fixes the bus bar 42A that connects the connection terminal 33V of the motor 30 and the connection portion 13V for the V phase of the semiconductor module 13 and the bus bar 42A. The terminal block 42B of the above is provided. The W-phase connecting member 43 also includes a bus bar 43A for connecting the connection terminal 33W of the motor 30 and the W-phase connection portion 13W of the semiconductor module 13, and a terminal block 43B for fixing the bus bar 43A. These terminal blocks 42B and 43B are also provided on the cooler 70 via the insulating sheet 80. In the present embodiment, the bus bars 41A, 42A, 43A and the terminal blocks 41B, 42B, 43B are separate members, but in each phase connecting member 41, 42, 43, the bus bars 41A, 42A, 43A and the terminal blocks 41B, 42B, The 43B may be integrated.

In the rotary electric machine system 100 configured as described above, when the motor 30 is driven, the coil or the like wound around the stator 31 of the motor 30 generates heat, and the heat is generated through the bus bars 41A, 42A, 43A to the semiconductor module. It is transmitted to 13 and current sensors 51, 52, 53. However, in the rotary electric machine system 100, since the terminal blocks 41B, 42B, 43B of the U-phase, V-phase, and W-phase connecting members 41, 42, 43 are provided on the cooler 70, the cooler for cooling the semiconductor module is provided. 70 cools the terminal blocks 41B, 42B, 43B and the bus bars 41A, 42A, 43A. As a result, the amount of heat transferred from the motor side to the inverter side via the U-phase, V-phase, and W-phase connecting members 41, 42, and 43 is reduced.

The U-phase, V-phase, and W-phase connecting members 41, 42, and 43 are arranged at positions closer to the connection terminals 33U, 33V, and 33W of the motor 30 than the semiconductor module 13. The connecting members 41, 42, 43 are connected to the connecting portions 13U, 13V, 13W of the semiconductor module 13 formed at positions closer to the connecting terminals 33U, 33V, 33W. With such an arrangement, the length of the bus bar can be shortened, and the connecting members 41, 42, and 43 of each phase can be made compact.

As shown in FIG. 3, the U-phase, V-phase, and W-phase connecting members 41, 42, 43 and the semiconductor module 13 are in the axial direction of the rotation shaft 32A of the motor 30 (direction orthogonal to the vehicle front-rear direction). It is provided side by side along. With such an arrangement, the moment of inertia of the inverter 10 around the rotating shaft 32A of the motor 30 can be reduced.

According to the rotary electric machine system 100 of the first embodiment described above, the following effects can be obtained.

The rotary electric system 100 is arranged between the bottom portion 62A of the inverter accommodating chamber 62 and the semiconductor module 13, and is provided in a cooler 70 for cooling the semiconductor module 13 with cooling water passing through the inside and a motor 30 provided in the cooler 70. It includes U-phase, V-phase, and W-phase connecting members 41, 42, and 43 that electrically connect the semiconductor module 13 and the semiconductor module 13.

In the rotary electric machine system 100, in order to cool the terminal bases 41B, 42B, 43B and the bus bars 41A, 42A, 43A by using the cooler 70 for cooling the semiconductor module, the heat generated by the coil of the motor 30 is the connecting member. It is possible to suppress transmission to the inverter side through 41, 42, and 43. Since the cooler 70 for cooling the semiconductor module is used together as a cooling device for the U-phase, V-phase, and W-phase connecting members 41, 42, and 43, the system is larger than the case where a cooling device dedicated to the connecting member is added. Forming can be suppressed. This makes it possible to suppress thermal deterioration of electrical components such as the semiconductor module 13 without causing the system to become large in size.

The cooler 70 is configured to cool the semiconductor module 13 that constitutes a part of the inverter 10, but cools the semiconductor modules of electrical components (converters and the like) other than the inverter 10 that are connected to the motor 30. It may be configured as follows.

In the rotary electric machine system 100, the cooler 70 is configured to cool the semiconductor module 13 of the inverter 10 and the stator 31 of the motor 30 with the cooling water passing through the inside. As described above, since the cooler 70 also serves as the cooling mechanism of the semiconductor module 13 and the cooling mechanism of the stator 31, it is possible to more reliably suppress the enlargement of the rotary electric machine system 100.

The motor 30 is provided with connection terminals 33U, 33V, 33W at the end of the U-phase, V-phase, and W-phase coils, and these connection terminals 33U, 33V, and 33W correspond to the U-phase, V-phase, and the U-phase. W-phase connecting members 41, 42, 43 are connected. The U-phase, V-phase, and W-phase connecting members 41, 42, and 43 are arranged at positions closer to the connection terminal of the motor 30 than the semiconductor module 13, and the connection terminals 33U, 33V, 33W and the semiconductor module 13 are connected to each other. It is configured to be connected. With such a configuration, the length of the bus bar can be shortened, and the connecting members 41, 42, and 43 of each phase can be made compact. As a result, it is possible to suppress the enlargement of the system.

In the rotary electric machine system 100, the U-phase, V-phase, and W-phase connecting members 41, 42, 43 and the semiconductor module 13 are provided side by side along the axial direction of the rotary shaft 32A of the motor 30. With such an arrangement, the moment of inertia of the inverter 10 around the rotating shaft 32A of the motor 30 can be reduced. Further, as shown in FIG. 3, when the housing 60 is fixed to the vehicle body frame by the mount members arranged at the mount positions M1 and M2 so that the axial direction of the rotating shaft 32A is orthogonal to the vehicle front-rear direction. Can suppress the rotary electric system 100 from swinging in the front-rear direction of the vehicle. As a result, it is possible to prevent interference between the rotary electric machine system 100 and the equipment arranged in the vicinity of the system, and it becomes easy to secure the arrangement space of the rotary electric machine system 100. Further, it is possible to improve the runnability of the vehicle.

The U-phase, V-phase, and W-phase connecting members 41, 42, 43 include bus bars 41A, 42A, 43A that connect the connection terminals 33U, 33V, 33W of the motor 30 and the connection portions 13U, 13V, 13W of the semiconductor module 13. It is provided with terminal blocks 41B, 42B, 43B for fixing the bus bars 41A, 42A, 43A. The terminal blocks 41B, 42B, 43B and the semiconductor module 13 of the phase connecting members 41, 42, 43 are arranged on the upper surface of the cooler 70 configured as a plate-shaped member. By arranging both the terminal blocks 41B, 42B, 43B and the semiconductor module 13 on the same plane of the cooler 70 in this way, it is possible to suppress the enlargement of the system. Further, by interposing the cooler 70 as a plate-like member between the semiconductor module 13 and the stator 31, the bottom portion 62A of the inverter housing chamber 62 can be reinforced, and the housing strength is ensured even if the bottom portion 62A is set to be thin to some extent. it can.

The bus bars 41A, 42A, and 43A of the U-phase, V-phase, and W-phase connecting members 41, 42, and 43 are bent and formed in an L shape along the side surfaces and the upper surfaces of the terminal blocks 41B, 42B, and 43B. As a result, the heights of the bus bars 41A, 42A, and 43A can be suppressed, and the size of the system can be suppressed. Further, by bringing the bus bars 41A, 42A, 43A into contact with the side surfaces and the upper surface of the terminal blocks 41B, 42B, 43B, the contact area between the bus bars 41A, 42A, 43A and the terminal blocks 41B, 42B, 43B can be increased, and the bus bar 41A can be increased. , 42A, 43A can be improved in cooling efficiency.

(Second Embodiment)
The rotary electric machine system 100 according to the second embodiment will be described with reference to FIG.

The rotary electric machine system 100 according to the second embodiment is different from the system of the first embodiment in the method of attaching the housing 60 to the vehicle body frame. In the following embodiments, the same reference numerals are used for configurations that perform the same functions as those in the first embodiment, and duplicate descriptions will be omitted as appropriate.

In the rotary electric machine system 100 according to the second embodiment, the housing 60 is fixed to the vehicle body frame so that the axial direction of the rotary shaft 32A of the motor 30 is the front-rear direction of the vehicle. The housing 60 is attached to the vehicle body frame via mount members (not shown) provided at the mount positions M3 and M4 below the housing 60. The straight line connecting these mount positions (centers of the mount members) is set to be orthogonal to the rotation axis 32A. In the rotary electric machine system 100, two mount positions are set in the motor width direction (vehicle width direction), but two or more mount positions may be set.

In the rotary electric machine system 100 according to the second embodiment, the U-phase, V-phase, and W-phase connecting members 41, 42, 43 and the semiconductor module 13 are provided side by side along the axial direction of the rotary shaft 32A of the motor 30. With such an arrangement, the moment of inertia of the inverter 10 around the rotating shaft 32A of the motor 30 can be reduced.

Further, as shown in FIG. 6, when the housing 60 is fixed to the vehicle body frame so that the axial direction of the rotating shaft 32A is the vehicle front-rear direction by the mounting members arranged at the mounting positions M3 and M4, the rotation is rotated. It is possible to suppress the electric system 100 from swinging in the front-rear direction of the vehicle. As a result, it is possible to prevent interference between the rotary electric machine system 100 and the equipment arranged in the vicinity of the system, and it becomes easy to secure the arrangement space of the rotary electric machine system 100. Further, it is possible to improve the runnability of the vehicle.

Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configurations of the above embodiments. Absent.

In the first and second embodiments, the bus bars 41A, 42A, 43A are configured to be in contact with the side surfaces and the upper surfaces of the terminal blocks 41B, 42B, 43B in the phase connecting members 41, 42, 43. It is not limited to such a configuration. In each of the phase connecting members 41, 42, 43, the bus bars 41A, 42A, 43A may be in contact with a part of the terminal blocks 41B, 42B, 43B.

Further, although the terminal blocks 41B, 42B, 43B of the phase connecting members 41, 42, 43 are arranged on the upper surface of the cooler 70, they may be arranged on the end side surface of the cooler 70.

100 Rotating Electric System 10 Inverter 13 Semiconductor Module 30 Motor 31 Stator 32 Rotor 32A Rotating Shaft 33U Connection Terminal 33V Connection Terminal 33W Connection Terminal 41 U-Phase Connecting Member 41A Busbar 41B Terminal Stand 42 V-Phase Connecting Member 42A Busbar 42B Terminal Stand 43W Phase Connecting member 43A Busbar 43B Terminal block 50 Controller 51 Current sensor 52 Current sensor 53 Current sensor 60 Housing 61 Motor accommodation room 62 Inverter accommodation room 70 Cooler

Claims (6)

A housing with a first containment chamber and a second containment chamber,
The rotary electric machine housed in the first storage chamber and
A rotary electric machine system that is housed in the second storage chamber and integrally includes a semiconductor module that is electrically connected to the rotary electric machine.
A cooler which is arranged so as to be interposed between the bottom of the second accommodation chamber and the semiconductor module, has a flow path inside, and cools the semiconductor module with a refrigerant passing through the flow path.
A terminal block mounted on the same plane as the semiconductor module with respect to the cooler, and a connecting member having a conductive bus bar.
With
The bus bar is bent and formed, and is fixed to the terminal block in a state where the two bent surfaces are in contact with the terminal block, and the rotary electric machine and the semiconductor module are electrically connected to each other. Electrical system. The rotary electric machine is composed of a stator fixed to the inner peripheral surface of the first accommodation chamber and a rotor rotatably provided with respect to the stator.
The cooler is configured to cool the semiconductor module and the stator.
The rotary electric machine system according to claim 1. The rotary electric machine includes a connection terminal for connecting to the connecting member.
The terminal block is arranged at a position closer to the connection terminal than the semiconductor module, and the connection terminal and the bus bar connected to the semiconductor module are connected at the terminal block.
The rotary electric machine system according to claim 1 or 2. The rotary electric machine has a rotary shaft on the rotor, and the rotary electric machine has a rotary shaft.
The connecting member and the semiconductor module are provided side by side along the axial direction of the rotating shaft.
The rotary electric machine system according to any one of claims 1 to 3, wherein the rotary electric machine system is characterized. The cooler is configured as a plate-like member having a flow path through which the refrigerant flows.
The rotary electric machine system according to any one of claims 1 to 4, wherein the rotary electric machine system is characterized. The semiconductor module is a module constituting an inverter.
The rotary electric machine system according to any one of claims 1 to 5, wherein the rotary electric machine system is characterized.

Images