Electromechanically integrated rotating electrical machine device

Abstract

An electromechanical integrated rotating electrical machine device is provided with: a rotating electrical machine; a power conversion device; a housing that accommodates the rotating electrical machine and the power conversion device; a bus bar module electrically connecting the plurality of first connection portions of the power conversion device and the plurality of second connection portions of the rotating electrical machine; the opening part is arranged on the wall part of the frame body and is opposite to the plurality of second connecting parts; and a cover that covers the opening. The bus bar module includes: a plurality of bus bars having a first bus bar connection portion connected to the first connection portion, an extension portion extending from the first bus bar connection portion to the second connection portion, and a second bus bar connection portion bent from the extension portion and connected to the second connection portion; and an electrically insulating bus bar holder covering the extension portions of the plurality of bus bars disposed so that the second bus bar connection portions are separated from each other. The cover is provided with: an opening closing part for closing the opening part; and an electrically insulating partition wall section that protrudes from the opening-closing section toward the plurality of second connection sections to which the second bus bar connection sections are connected, and that is inserted between the second bus bar connection sections that are adjacent to each other.

Description

Technical Field

[0001] The present invention relates to a mechatronic rotating electrical machine device. Background Art

[0002] Conventionally, mechatronic rotating electrical machine devices are known, in which a motor (rotating electrical machine) and an inverter (power conversion device) are integrally housed in a housing. To ensure insulation from surrounding components and interphase insulation, the multiple busbars connecting the motor and inverter are overmolded with an insulating resin or the like.

[0003] On the other hand, Patent Document 1 describes a structure that does not use such overmolding. In the technology described in Patent Document 1, the busbars connected to the terminals extending from the power module are placed on a tray equipped with an insulating sheet. A connection hole is formed at the other end of the linearly extending busbar, and the motor-side terminal member is inserted into this hole from below for connection. Prior art literature Patent Literature

[0004] Patent Document 1: Japanese Patent No. 6409968 Summary of the Invention Problems to be solved by the invention

[0005] However, in the technology described in Patent Document 1, the busbar is arranged on a tray horizontal to the motor housing portion, and the motor-side connection portion is extended to the position of the busbar. Therefore, the motor-side connection portion needs to be led out to the position of the tray.

[0006] However, the placement of power modules requiring cooling mechanisms depends on the configuration of the power converter, and the power module connection terminals may not necessarily be located near the motor-side connection. In this case, busbars must be routed from the power module connection terminals to the area where the motor-side connection is located, with the busbar connection section bent to bring it closer to the motor-side connection. Therefore, in configurations that do not use overmolding, there is the problem of ensuring insulation between the busbar routing area and the motor connection area. Technical means to solve the problem

[0007] A mechatronic rotating electrical machine according to an aspect of the present invention includes: a rotating electrical machine; a power conversion device connected to the rotating electrical machine; a housing accommodating the rotating electrical machine and the power conversion device; a busbar module electrically connecting a plurality of first connection portions of the power conversion device and a plurality of second connection portions of the rotating electrical machine; an opening provided in a wall portion of the housing, facing the plurality of second connection portions; and a cover covering the opening. The busbar module includes: a plurality of busbars each having a first busbar connection portion connected to the first connection portion, an extension portion extending from the first busbar connection portion toward the second connection portion, and a second busbar connection portion bent from the extension portion and connected to the second connection portion; and an electrically insulating busbar holder covering the extension portions of the plurality of busbars, the plurality of busbars being arranged with the second busbar connection portions spaced apart. The cover includes: an opening closing portion closing the opening; and an electrically insulating partition wall portion projecting from the opening closing portion toward the plurality of second connection portions to which the second busbar connection portions are connected, and interposed between adjacent second busbar connections. Effects of the Invention

[0008] According to the present invention, in a configuration that does not use overmolding, insulation properties can be ensured in the busbar layout region and the motor connection region. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a perspective view showing the appearance of the mechatronic rotating electrical machine device according to the present invention. Figure 2 This is a diagram showing a schematic configuration of a power conversion device. Figure 3 This is a diagram showing part of the component arrangement within the inverter housing. Figure 4 This is a perspective view showing the appearance of the busbar module. Figure 5 This is another perspective view showing the appearance of the busbar module. Figure 6 This is a diagram showing the shape of a three-phase busbar. Figure 7 This is a diagram showing a generatrix-side surface of one cage member. Figure 8 It is a diagram showing a surface on the generatrix side of another cage member. Figure 9 Yes Figure 5 Figure 1 is a diagram of the A1-A1 section. Figure 10 It is a diagram illustrating a snap connection mechanism. Figure 11 This is an enlarged view of the inverter frame area where the second busbar connection portion is provided. Figure 12 It is a perspective view showing the appearance of the terminal cover. DETAILED DESCRIPTION

[0010] Hereinafter, the mode for implementing the present invention will be described with reference to the accompanying drawings. The following description and the accompanying drawings are examples for illustrating the present invention. For the purpose of clarity of description, appropriate omissions and simplifications have been made. In addition, in the following description, identical or similar elements and processes are given identical symbols, and repeated descriptions are sometimes omitted. In addition, the content of the following description only represents an example of an embodiment of the present invention. The present invention is not limited to the following embodiments and may also be implemented in various other ways.

[0011] Figure 1 This is a perspective view showing the appearance of the mechatronic rotating electrical machine 1 of the present invention. The mechatronic rotating electrical machine 1 is a device that integrally forms a rotating electrical machine 10 and a power conversion device 20. The mechatronic rotating electrical machine 1 is used, for example, as a driving device for an electric vehicle. The rotating electrical machine 10, such as a motor, has a roughly cylindrical frame (hereinafter referred to as a motor frame) 10a that houses a rotor and a stator. The detailed shape of the portion below the portion marked with the symbol 10a is omitted, and is represented by a large cylinder and a small cylinder. A roughly rectangular parallelepiped frame (hereinafter referred to as an inverter frame) 20a that houses the electrical components that constitute the power conversion device 20 is fixed to the upper portion of the motor frame 10a in the figure by bolts or the like. An upper cover 20b covering the upper portion is provided on the inverter frame 20a.

[0012] Figure 2 This diagram schematically illustrates the configuration of the power conversion device 20. The power conversion device 20 converts DC power supplied from the DC power supply 2 into AC power to drive the rotating electrical machine 10. The power conversion device 20 includes a power conversion circuit 200, a gate drive circuit 201, a control circuit 202, and a smoothing capacitor 203. The power conversion circuit 200 includes power modules 210U, 210V, and 210W for the U, V, and W phases.

[0013] Each power module 210U, 210V, 210W includes two sets of power semiconductors 211 that constitute an upper arm and a lower arm. Each power module 210U, 210V, 210W includes three terminals: a P-terminal 212U, 212V, 212W; an N-terminal 213U, 213V, 213W; and an AC-terminal 214U, 214V, 214W. P-terminals 212U, 212V, 212W are connected to a positive bus bar 204p, while N-terminals 213U, 213V, 213W are connected to a negative bus bar 204n. AC-terminals 214U, 214V, 214W are connected to motor-side connection portions 10U, 10V, 10W, to which the windings of the corresponding phases of the rotating electrical machine 10 are connected, via bus bars 300U, 300V, 300W, described later.

[0014] Each power semiconductor 211 switches on and off according to a drive signal input from the gate drive circuit 201, converting DC power into AC power. The control circuit 202 inputs on / off commands for each power semiconductor 211 to the gate drive circuit 201 based on commands from a higher-level controller (not shown) installed on the vehicle side.

[0015] The power semiconductor 211 uses, for example, a power MOSFET (Metal Oxide Semiconductor Field Effect Transistor) or an IGBT (Insulated Gate Bipolar Transistor). Figure 2 In the example shown, an IGBT is used as the power semiconductor 211 .

[0016] Both ends of smoothing capacitor 203 are connected to positive bus 204p and negative bus 204n. Smoothing capacitor 203 is a capacitor used to smooth the current generated by the on / off switching of power semiconductor 211, thereby suppressing ripples in the DC current supplied from DC power supply 2 to power conversion circuit 200. For example, an electrolytic capacitor or a film capacitor is used for smoothing capacitor 203.

[0017] Figure 3 FIG. 2 is a diagram showing a portion of the component arrangement within the inverter housing 20a. Figure 3 , a portion of the power conversion device 20 is shown with the upper cover 20b covering the upper portion of the inverter housing 20a removed. A module housing 206 for housing power modules 210U to 210W is provided on the lower side of the circuit board 215 on which the gate drive circuit 201 and the like are mounted. Figure 3Although not shown in the figure, the power module 210W is arranged on the upper side of the power module 210V. A refrigerant flow path (not shown) is formed in the module housing 206, and the power modules 210U to 210W are arranged in the refrigerant flow path. The power modules 210U to 210W are cooled by the refrigerant flowing in the refrigerant flow path. A supply port 207a for supplying refrigerant and a discharge port 207b for outputting refrigerant are provided on the side wall of the inverter housing 20a (see FIG. Figure 1 ).

[0018] The inverter housing 20a is provided with a DC connector 205 for connecting to an external DC power supply 2. The positive bus 204p is connected to the positive terminal 205p of the DC connector 205, and the negative bus 204n is connected to the negative terminal 205n. As described above, the P terminals 212U to 212W of the power modules 210U to 210W are connected to the positive bus 204p, and the N terminals 213U, 213V, and 213W are connected to the negative bus 204n.

[0019] In addition, a busbar module 30 (see FIG. 2 ) described later is provided on the lower side of the module housing portion 206 as shown in the figure. Figure 4 ). The details will be described later. The busbar module 30 includes busbars 300U, 300V, 300W and a busbar holder 310. Each busbar 300U, 300V, 300W has: a first busbar connection portion 301U, 301V, 301W, which is connected to the connection AC terminals 214U, 214V, 214W of the power modules 210U~210W; and a second busbar connection portion 302U, 302V, 302W, which is connected to the motor side connection portion 10U, 10V, 10W of the U, V, W phases on the rotating motor 10 side. In addition, Figure 3 , first busbar connection parts 301U, 301V and second busbar connection parts 302U, 302V, 302W are shown.

[0020] Although not shown, motor-side connectors 10U, 10V, and 10W extend from motor housing 10a in region R1 within inverter housing 20a. Therefore, the second busbar connectors 302U, 302V, and 302W of busbars 300U, 300V, and 300W are also located in region R1. An opening 208 is formed in the sidewall of inverter housing 20a, in the area opposite the second busbar connectors 302U, 302V, and 302W. A terminal cover 209 is secured to opening 208 using bolts or the like, covering opening 208.

[0021] Figure 4 、 5 It is a perspective view showing the appearance of the bus bar module 30 . Figure 4 With Figure 3The busbar module 30 is shown in the same configuration (the z-axis is directed upward in the figure). Figure 5 This is a perspective view showing the busbar module 30 when the coordinate axes are set with the z-axis facing downward, that is, when viewed from the bottom side of the inverter housing 20a. The busbar module 30 includes three busbars 300U, 300V, and 300W corresponding to the U phase, V phase, and W phase, respectively, and a busbar holder 310. The busbar module 30 is fixed to the inverter housing 20a by bolts or the like using a plurality of fixing holes 316 formed in the busbar holder 310. Figure 3 The lower portion (back side) of the module housing portion 206 is shown.

[0022] Figure 6 This figure shows the shapes of busbars 300U, 300V, and 300W installed in busbar module 30. The arrangement of busbars 300U, 300V, and 300W is the same as that within busbar module 30. Busbars 300U, 300V, and 300W are formed from elongated plate-shaped conductive members (e.g., metal members with excellent conductivity such as oxygen-free copper).

[0023] The busbar 300U has an L-shaped extension 303U arranged in the xy plane, and first and second busbar connection portions 301U and 302U, located at both ends of the busbar 300U and bent from the extension 303U in the positive z-axis direction. Similarly, each busbar 300V and 300W has an L-shaped extension 303V and 303W in the xy plane, and first and second busbar connection portions 301V and 301W and 302V and 302W, bent from the extension 303V and 303W in the positive z-axis direction. Each busbar connection portion 301U-301W and 302U-302W has a fastening hole 305 formed in each of the busbar connection portions.

[0024] The busbar holder 310 is formed of an electrically insulating member that covers the extensions 303U to 303W of the busbars 300U to 300W. As the insulating member, resin or ceramic is used. Figure 4 、 5 As shown, the busbar holder 310 is composed of a holder member 310a covering the positive side of the extensions 303U to 303W in the z direction, and a holder member 310b covering the negative side of the extensions 303U to 303W in the z direction. The busbar connecting portions 301U to 301W and 302U to 302W of the busbars 300U to 300W are exposed from the busbar holder 310.

[0025] Figure 7 : is a diagram showing the surface of the housing member 310a on the busbar side. Figure 8This figure shows the busbar-side surface of the retainer member 310b. Retainer members 310a and 310b include a groove 311U for positioning the extension 303U, a groove 311V for positioning the extension 303V, and a groove 311W for positioning the extension 303W. Partitions 312 are formed in regions R11 between grooves 311U and 311V, and in regions R12 between grooves 311V and 311W, of retainer member 310a. Similarly, partitions 313 are formed in regions R13 between grooves 311U and 311V, and in regions R14 between grooves 311V and 311W, of retainer member 310b.

[0026] Figure 9 Yes Figure 5 A1-A1 section of the diagram. Figure 9 The structure of the partitions 312 and 313 will be described. The partition 312 formed on the retaining member 310a and the partition 313 formed on the retaining member 310b face each other. The pair of partitions 312 and 313 on the left side of the diagram are arranged to fill the gap G11 between the extension portion 303U and the extension portion 303V. Similarly, the pair of partitions 312 and 313 on the right side of the diagram are arranged to fill the gap G12 between the extension portion 303V and the extension portion 303W.

[0027] The surface of the partition 312 facing the partition 313 is provided with a convex portion S1 in the center and concave portions S2 on either side of the convex portion S1. Conversely, the surface of the partition 313 facing the partition 312 is provided with a concave portion S3 in the center and convex portions S4 on either side of the concave portion S3. The convex portion S1 of the partition 312 fits into the concave portion S3 of the partition 313, and the convex portion S4 of the partition 313 fits into the concave portion S2 of the partition 312.

[0028] like Figure 9 As shown, the gaps G11 and G12 between the busbars are filled with the insulating member dividers 312 and 313, ensuring interphase insulation performance. Furthermore, the contact surfaces of dividers 312 and 313 are formed into a concave and convex shape, increasing the creepage distance and improving interphase insulation performance.

[0029] In addition, when the cage members 310a and 310b are connected to each other, for example, Figure 10The mechanical connection method shown is called a snap-fit ​​connection. The retaining member 310b has a coupling claw 314 with a protrusion 314a, and the retaining member 210a has a recess 315 that engages with the protrusion 314a. When the retaining member 310b is moved closer to the retaining member 310a as indicated by the arrow, the inclined portion 314b at the top of the coupling claw 314 abuts the upper end of the retaining member 310a, and the coupling claw 314 elastically deforms as shown by the dotted line. When the retaining member 310b is further moved downward, the protrusion 314a of the coupling claw 314 is inserted into and engaged with the recess 315 of the retaining member 310a. As a result, the retaining members 310a and 310b are connected.

[0030] Figure 11 yes Figure 3 The opening 208 of the terminal cover 209 and the enlarged view of the portion of the busbars 300U to 300W where the second busbar connecting portions 302U to 302W are provided are provided. Figure 11 The motor-side connection parts 10U, 10V, and 10W are also shown. Openings 208 provided on the side walls of the inverter housing 20a are used to connect the second busbar connection parts 302U-302W of the busbars 300U-300W to the motor-side connection parts 10U, 10V, and 10W. A tool or the like is inserted into the inverter housing 20a through these openings to screw the connection parts together.

[0031] Figure 12 This is a perspective view showing the appearance of terminal cover 209. Terminal cover 209 includes a closing portion 220 that covers opening 208 provided in the side wall of inverter housing 20a, and plate-shaped insulating walls 221a and 221b provided upright on the inner circumference of closing portion 220. Closing portion 220 is formed with holes 224 for bolting terminal cover 209 to inverter housing 20a. Terminal cover 209 is formed from an electrically insulating material (e.g., resin).

[0032] exist Figure 11 , a cross section of the terminal cover 209 connected to the opening 208 is shown. The gap between the closing portion 220 of the terminal cover 209 and the side wall of the inverter housing 20a is sealed by a sealing material 223. A metal plate 222 is embedded in the closing portion 220 of the terminal cover 209.

[0033] Within the inverter housing 20a, the motor connection portions 10U-10W extend from the motor housing 10a so as to face the opening 208. The second busbar connection portions 302U-302W of the busbars 300U-300W are bent so as to approach the motor connection portions 10U-10W, that is, so as to extend from the extension portions 303U-303W along the z-axis. The second busbar connection portions 302U-302W are arranged so as to overlap the motor connection portions 10U-10W of the corresponding phase in the y-direction. These screw fastening operations are performed through the opening 208 as described above.

[0034] Although not shown in the figure, nuts are fixed in advance on the positive side of the second busbar connecting parts 302U to 302W in the y direction by welding, etc., and bolts are inserted through the connection holes 101 of the motor connecting parts 10U to 10W and tightened on the nuts. Figure 11 In the example shown, the motor connection parts 10U-10W and the second busbar connection parts 302U-302W are arranged in the order of the motor connection parts 10U-10W in the y direction, but they may be arranged in the reverse order. In this case, the nuts are fixed to the motor connection parts 10U-10W.

[0035] Gaps G are provided between the motor connection portion 10U and the second busbar connection portion 302U, and the motor connection portion 10V and the second busbar connection portion 302V, and between the motor connection portion 10V and the second busbar connection portion 302V and the motor connection portion 10W and the second busbar connection portion 302W. Furthermore, the insulating walls 221a and 221b of the terminal cover 209 fixed to the opening 208 are inserted into the gaps G. Inserting the insulating walls 221a and 221b into the gaps G maintains the interphase insulation performance of the connection portion where the conductors are exposed. Furthermore, since the metal plate 222 is embedded in the closing portion 220 covering the opening 208, the radiated noise generated by the AC current is shielded by the metal plate 222, thereby suppressing the radiated noise from leaking from the inverter housing 20a to the outside.

[0036] After the screw tightening of the motor connectors 10U-10W and the second busbar connectors 302U-302W is completed, the terminal cover 209 is installed and bolted to the opening 208. When installing the terminal cover 209 to the opening 208, the insulating walls 221a and 221b protruding from the opening 208 into the frame are first inserted into the gap G. The insulating walls 221a and 221b are then guided by the gap G, while the closing portion 220 is positioned at a predetermined position within the opening 208 and then bolted. In this way, the insulating walls 221a and 221b also serve as guides when installing the terminal cover 209 to the opening 208. This improves the workability of assembling the terminal cover 209.

[0037] According to the embodiment of the present invention described above, the following effects are achieved.

[0038] (1) Figures 2 to 6 As described above, the mechatronic rotating electrical machine device 1 includes: a rotating electrical machine 10; a power conversion device 20 connected to the rotating electrical machine 10; an inverter housing 20a that accommodates the rotating electrical machine 10 and the power conversion device 20; a busbar module 30 that electrically connects a plurality of connection AC terminals 214U to 214W (first connection portions) of the power conversion device 20 to a plurality of motor-side connection portions 10U to 10W (second connection portions) of the rotating electrical machine 10; an opening 208 provided on a wall portion of the inverter housing 20a and facing the plurality of motor-side connection portions 10U to 10W; and a terminal cover 209 (cover) that covers the opening 208. The busbar module 30 includes: a plurality of busbars 300U-300W, each having a first busbar connecting portion 301U-301W connected to the AC terminals 214U-214W, an extension portion 303U-303W extending from the first busbar connecting portion 301U-301W toward the motor-side connecting portion 10U-10W, and a second busbar connecting portion 302U-302W bent from the extension portion 303U-303W and connected to the motor-side connecting portion 10U-10W; and an electrically insulating busbar holder 310 covering the plurality of busbars 300U-300W. The plurality of busbars 300U to 300W are arranged in a manner that they are separated from the second busbar connection portions 302U to 302W, and the terminal cover 209 has: a closing portion 220 (opening closing portion) that closes the opening portion 208; and electrically insulating insulating wall portions 221a, 221b (partitioning portions) that protrude from the closing portion 220 toward the plurality of motor-side connection portions 10U to 10W connected to the second busbar connection portions 302U to 302W, and are inserted between mutually adjacent second busbar connection portions 302U to 302W.

[0039] As described above, since the insulating walls 221a and 221b of the terminal cover 209 are inserted between the second busbar connections 302U-302W, interphase insulation can be ensured for the second busbar connections 302U-302W that are exposed by bending. Consequently, since the busbar holder 310 can be constructed to cover the extensions 303U-303W excluding the second busbar connections 302U-302W, the shape of the insulation mold can be simplified regardless of the shape of the second busbar connections 302U-302W, thereby reducing the mold material. Thus, the busbar holder 310 and the terminal cover 209 ensure insulation between the extensions 303U-303W, which are the layout area for the busbars 300U-300W, and the second busbar connections 302U-302W, which are the motor connection area.

[0040] Furthermore, since the insulating wall portions 221 a and 221 b function as guides when the terminal cover 209 is mounted on the opening portion 208 , it is possible to improve the operability when the terminal cover 209 is mounted on the opening portion 208 .

[0041] (2) In (1) above, if Figures 4-6 As shown in FIG. 1 , it is preferable that the busbar holder 310 integrally covers the plurality of separately arranged extensions 303U to 303W. For example, if the mechatronic rotating electrical machine device 1 is mounted on a vehicle, without the busbar holder 310, the extensions 303U to 303W may vibrate due to vehicle vibrations, easily causing the busbar to shift. On the other hand, by integrally covering the plurality of extensions 303U to 303W with the busbar holder 310, the extensions 303U to 303W can be suppressed.

[0042] (3) In (2) above, if Figures 5 to 9 As shown in FIG. 1 , multiple busbars 300U-300W are formed of plate-shaped conductors, and multiple extensions 303U-303W are arranged side by side with gaps G11 and G12 spaced apart in a direction perpendicular to the front-back direction of the plate-shaped conductors. Furthermore, the busbar holder 310 includes an electrically insulating holder portion 310a (first holder member) that covers the front surfaces of the multiple extensions 303U-303W, and an electrically insulating holder portion 310b (second holder member) that covers the back surfaces of the multiple extensions 303U-303W.

[0043] Thus, by clamping the extensions 303U to 303W with the two retainer parts 310a and 310b, the shape of the busbar retainer 310 can be simplified. In addition, by adopting the clamping structure, it is possible to apply Figure 10 The snap-fit ​​connection mechanism shown can simplify the connection mechanism.

[0044] (4) In (3) above, if Figure 9 As shown in FIG. 1 , the divider 312 (first divider) of the retainer portion 310a (first retainer member) and the divider 313 (second divider) of the retainer portion 310b (second retainer member) are disposed in gaps G11 and G12. Furthermore, the opposing surfaces of the divider 312 and the divider 313 have convex portions S1 and S4 and concave portions S2 and S3, respectively. The convex portion S1 of the divider 312 fits into the concave portion S3 of the divider 313, and the convex portion S4 of the divider 313 fits into the concave portion S2 of the divider 312. By forming the mutually fitting convex portions S1 and S4 and concave portions S2 and S3 on the opposing surfaces of the dividers 312 and 313, the creepage distance between the phases is increased. As a result, the insulation performance between the phases can be improved.

[0045] (5) In (1) above, if Figure 11 、 12 As shown in FIG. 1 , the terminal cover 209 may be formed of an electrically insulating material. By forming the entire terminal cover 209 including the insulating wall portions 221 a and 221 b of an electrically insulating material, processing costs can be reduced.

[0046] (6) In (5) above, if Figure 11 As shown, a metal plate 222 is embedded in the closing portion 220 (opening-sealing portion) of the terminal cover 209. By embedding the metal plate 222 in the closing portion 220 covering the opening 208, the radiation noise generated by the AC current is shielded by the metal plate 222, thereby suppressing the radiation noise from leaking from the inverter housing 20a to the outside.

[0047] (7) In (3) above, if Figure 6 、 11 As shown, the second busbar connecting portions 302U-302W are bent from the extension portions 303U-303W so that one of their front and back sides faces the opening 208. The motor-side connecting portions 10U-10W (second connecting portions) are arranged opposite one of their front and back sides. This overlapping arrangement of the motor-side connecting portions 10U-10W and the second busbar connecting portions 302U-302W opposite the opening 208 facilitates fastening operations through the opening 208.

[0048] In addition, if Figure 5 As shown, the second busbar connection parts 302U to 302W bent from the extension parts 303U to 303W are exposed from the busbar holder 310, but the insulation wall parts 221a and 221b of the terminal cover 209 are inserted between the adjacent second busbar connection parts 302U to 302W to ensure phase insulation.

[0049] The various embodiments and modifications described above are merely examples, and the present invention is not limited to these contents as long as they do not impair the characteristics of the invention. In addition, various embodiments and modifications have been described above, but the present invention is not limited to these contents. Other methods considered within the scope of the technical concept of the present invention are also included in the scope of the present invention. Explanation of symbols

[0050] 1…Mechatronic rotating electrical machine, 10…Rotating electrical machine, 10U, 10V, 10W…Motor-side connection, 20…Power conversion device, 10a…Motor frame, 20a…Inverter frame, 30…Bus module, 204n…Negative bus bar, 204p…Positive bus bar, 206…Module accommodating portion, 208…Opening, 209…Terminal cover, 210U, 210V, 210W…Power module, 212U, 212V, 212W…Connecting to the P terminal, 213U, 213V, 213W…Connecting to the N terminal, 214U, 214V, 214W…Connecting to the A terminal C terminal, 221a, 221b…insulating wall portion, 220…enclosing portion, 222…metal plate, 300U, 300V, 300W…busbar, 301U, 301V, 301W…first busbar connecting portion, 302U, 302V, 302…second busbar connecting portion, 303U, 303V, 303W…extension portion, 310…busbar retainer, 310a, 310b…retainer portion, 311U, 311V, 311W…groove portion, 312, 313…partitioning portion, G, G11, G12…gap, S1, S4…convex portion, S2, S3…concave portion.

Claims

1. A mechatronic rotating electrical machine, characterized in that: have: Rotating electric machines; a power conversion device connected to the rotating electrical machine; a frame housing the rotating electrical machine and the power conversion device; a busbar module electrically connecting the plurality of first connection portions of the power conversion device and the plurality of second connection portions of the rotating electrical machine; an opening portion provided on a wall portion of the frame body and opposite to the plurality of second connection portions; and a cover covering the opening, The busbar module has: a plurality of busbars having a first busbar connecting portion connected to the first connecting portion, an extension portion extending from the first busbar connecting portion toward the second connecting portion, and a second busbar connecting portion bent from the extension portion and connected to the second connecting portion; and an electrically insulating busbar holder covering the extension portions of the plurality of busbars, wherein the plurality of busbars are arranged so as to be separated from the second busbar connecting portions; The cover has: an opening closing portion that closes the opening; and An electrically insulating partition wall protrudes from the opening closing portion toward the plurality of second connecting portions to which the second busbar connecting portions are connected, and is inserted between the second busbar connecting portions adjacent to each other.

2. The mechatronic rotating electrical machine according to claim 1, wherein: The busbar holder integrally covers the plurality of separately arranged extension portions.

3. The mechatronic rotating electrical machine according to claim 2, wherein: The plurality of busbars are formed of plate-shaped conductors, and the plurality of extension portions are arranged in parallel with gaps therebetween in a direction perpendicular to the front-back direction of the plate-shaped conductors. The busbar holder includes an electrically insulating first holder member covering the front surfaces of the plurality of extension portions and an electrically insulating second holder member covering the back surfaces of the plurality of extension portions.

4. The mechatronic rotating electrical machine according to claim 3, wherein: The first partition of the first holding frame member and the second partition of the second holding frame member are arranged in the gap. The mutually facing surfaces of the first partition and the second partition respectively have a convex surface and a concave surface. The convex portion of the first partition is fitted into the concave portion of the second partition, and the convex portion of the second partition is fitted into the concave portion of the first partition.

5. The mechatronic rotating electrical machine according to claim 1, wherein: The cover is formed of an electrically insulating material.

6. The mechatronic rotating electrical machine according to claim 5, wherein: A metal plate is embedded in the opening closing portion of the cover.

7. The mechatronic rotating electrical machine according to claim 3, wherein: The second busbar connecting portion is bent from the extending portion so that one of the front and back sides faces the opening portion. The second connecting portion is arranged to face one of the front and back surfaces of the second busbar connecting portion.

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