Bus bar, motor, and power transmission system including the same

Abstract

To provide a bus bar capable of realizing a plurality of three-phase circuits. [Solution] An embodiment discloses a busbar that includes an insulating body (161), a plurality of neutral terminals (162) arranged in the insulating body (161), and a plurality of first drive terminals (UT1, UT2), second drive terminals (VT1, VT2), and third drive terminals (WT1, WT2) arranged in the insulating body (161), wherein the plurality of neutral terminals (162), first drive terminals (UT1, UT2), second drive terminals (VT1, VT2), and third drive terminals (WT1, WT2) are electrically insulated from each other, and the plurality of first drive terminals (UT1, UT2), second drive terminals (VT1, VT2), and third drive terminals (WT1, WT2) have the same shape.

Description

Technical Field

[0001] The embodiments relate to a bus bar, a motor, and a power transmission system including the same .

Background Art

[0002] Generally, an Electronic Power Steering (EPS) is a device for ensuring the steering stability of a vehicle, which makes handling easier by using a motor to provide power in the direction in which the driver steers . Unlike an existing Hydraulic Power Steering (HPS), such an Electronic Power Steering (EPS) can improve steering performance and steering feel by controlling the operation of the motor according to driving conditions .

[0003] Specifically, an Electronic Power Steering (EPS) has an inverter controlled by an Electronic Control Unit (ECU) to drive a motor according to driving conditions sensed by a vehicle speed sensor, a torque angle sensor, a torque sensor, etc . Therefore, it ensures turning stability and provides quick restoring force, enabling safe driving for the driver .

[0004] Recently, requirements for stability in the automotive field have been increasing . Therefore, there is a need for a technology that can maintain the stability of a vehicle even when a part of an Electronic Power Steering (a control unit or an inverter) is inoperable . . .

[0005] .

Summary of the Invention

Problems to be Solved by the Invention

[0006] An embodiment provides a bus bar capable of embodying a plurality of three-phase circuits.

[0007] Also provided is a motor having a plurality of independently controlled three-phase circuits.

[0008] Also provided is a power transmission system in which a plurality of inverters control a motor.

Means for Solving the Problems

[0009] A bus bar according to an embodiment of the present invention includes an insulating body; a plurality of neutral terminals disposed on the insulating body; and a plurality of first drive terminals, second drive terminals, and third drive terminals disposed on the insulating body, wherein the plurality of neutral terminals, first drive terminals, second drive terminals, and third drive terminals are electrically insulated from each other, and the shapes of the plurality of first drive terminals, second drive terminals, and third drive terminals may be the same. The insulating body may include insertion grooves in which the plurality of first drive terminals, second drive terminals, and third drive terminals are disposed. The plurality of neutral terminals may have the same shape. The plurality of first drive terminals, second drive terminals, and third drive terminals may be disposed on the same plane. The plurality of first drive terminals, second drive terminals, and third drive terminals may have different radii of curvature at one end and the other end. The shapes of the plurality of first drive terminals, second drive terminals, and third drive terminals may be the same.

[0010] The insulating body may include insertion grooves in which the plurality of first drive terminals, second drive terminals, and third drive terminals are disposed. The plurality of neutral terminals may have the same shape.

[0011] The plurality of first drive terminals, second drive terminals, and third drive terminals may be disposed on the same plane.

[0012] The plurality of first drive terminals, second drive terminals, and third drive terminals may have different radii of curvature at one end and the other end. The plurality of first drive terminals, second drive terminals, and third drive terminals may be disposed on the same plane.

[0013] The plurality of first drive terminals, second drive terminals, and third drive terminals may have different radii of curvature at one end and the other end. The radii of curvature at one end and the other end may be different from each other.

[0014] The plurality of first drive terminals, second drive terminals, and third drive terminals may have a changing curvature from one end to the other end. from one end to the other end.

[0015] The plurality of first drive terminals, second drive terminals, and third drive terminals include a main body portion; a connection portion connected to the main body portion; and a terminal portion axially protruding from the main body portion. can include.

[0016] The connection portion can include a first connection portion connected to one end of the main body portion and a second connection portion connected to the other end of the main body portion.

[0017] include an extension portion disposed between the connection portion and the main body portion, the extension portion extending in a direction perpendicular to the axial direction, and the length of the extension portion connected to the first connection portion may be different from the length of the extension portion connected to the second connection portion. extends in a direction perpendicular to the axial direction, and the length of the extension portion connected to the first connection portion may be different from the length of the extension portion connected to the second connection portion. from the length of the extension portion connected to the second connection portion.

[0018] The length of the extension portion connected to the first connection portion may be formed longer than the length of the extension portion connected to the second connection portion. than.

[0019] The main body portion may have a changing curvature from one end to the other end.

[0020] A bus bar according to another embodiment of the present invention includes an insulating main body; and a plurality of first, second, and third drive terminals disposed on the insulating main body, and the diameter of a first virtual circle connecting one ends of the plurality of first, second, and third drive terminals may be smaller than the diameter of a second virtual circle connecting the other ends of the plurality of first, second, and third drive terminals. a plurality of first, second, and third drive terminals, and the diameter of a first virtual circle connecting one ends of the plurality of first, second, and third drive terminals may be smaller than the diameter of a second virtual circle connecting the other ends of the plurality of first, second, and third drive terminals. A bus bar according to another embodiment of the present invention includes an insulating main body; and a plurality of first, second, and third drive terminals disposed on the insulating main body, and the diameter of a first virtual circle connecting one ends of the plurality of first, second, and third drive terminals may be smaller than the diameter of a second virtual circle connecting the other ends of the plurality of first, second, and third drive terminals. than the diameter of a second virtual circle connecting the other ends of the plurality of first, second, and third drive terminals.

[0021] The insulating body includes a first hole formed in the center, and the diameter of the first hole may be smaller than the diameter of the first virtual circle.

[0022] The centers of the first hole, the first virtual circle, and the second virtual circle may be the same.

[0023] A motor according to an embodiment of the present invention includes a stator portion including a first coil group and a second coil group; and a first terminal assembly electrically connected to the first coil group to form a first circuit, a second terminal assembly electrically connected to the second coil group to form a second circuit, and a bus bar including an insulating body fixing the first and second terminal assemblies. The first terminal assembly and the second terminal assembly each include at least one or more first drive terminals, a second drive terminal, and a third drive terminal, and the shapes of the first drive terminal, the second drive terminal, and the third drive terminal may be the same.

[0024] The curvature of the first drive terminal, the second drive terminal, and the third drive terminal may change from one end to the other end.

[0025] A power transmission system according to an embodiment of the present invention includes a motor including a first circuit and a second circuit; a first drive unit electrically connected to the first circuit, and a second drive unit electrically connected to the second circuit; and a control unit controlling the first drive unit and the second drive unit. The first circuit includes a first coil group and a first terminal assembly electrically connecting the first coil group, and the second circuit may include a second coil group and a second terminal assembly electrically connecting the second coil group. ​​​​​​​​​​​​​

Advantages of the Invention

[0026] According to the embodiment, since a plurality of three-phase circuits can be embodied in a single motor, the reliability can be improved.

[0027] Also, since the shapes of the terminals are the same, the manufacturing cost can be reduced.

[0028] Also, since the terminals are formed in a spiral shape, a plurality of terminals can be densely arranged, and the size can be reduced.

[0029] Also, since the power terminals are separately separated, the manufacturing process can be simplified.

[0030] Also, since terminals of the same shape are assembled, the structure of the insulator becomes simple, and the productivity of the assembly process can be improved.

[0031] The various and beneficial advantages and effects of the present invention are not limited to the above-described content, and should be more easily understood in the process of explaining the specific embodiments of the present invention.

Brief Description of the Drawings

[0032]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0033] The present invention can be subjected to various modifications and can have various embodiments. Specific embodiments are illustrated and described in the drawings. However, this is not intended to limit the embodiments of the present invention to specific embodiments, but should be understood to include all modifications, equivalents, and alternatives included in the spirit and technical scope of the embodiments.

[0034] Terms including ordinal numbers such as first, second, etc. can be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the rights of the embodiment, the second component can be named the first component, and similarly the first component can also be named the second component. And / or means a combination of a plurality of related described items or any one of a plurality of related described items.

[0035] The terms used in the present application are only used to explain specific embodiments, and are not intended to limit the embodiments of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "including" or "having" are , which attempts to specify that there are features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and one or more other features, numbers, steps, operations, components, parts, or combinations thereof, etc., should not be understood to preclude their existence or the possibility of addition in advance. In the description of the embodiments, when any one element is described as being "on or under" another element, "on or under" means that the two elements are in direct contact with each other, or one or more other elements are disposed between the two elements to form (indirectly). Also, when expressed as "on or under", it may include not only the upward direction but also the downward direction with respect to one element.

[0036] In the description of the embodiments, when any one element is described as being "on or under" another element, "on or under" means that the two elements are in direct contact with each other, or one or more other elements are disposed between the two elements to form (indirectly). Also, when expressed as "on or under", it may include not only the upward direction but also the downward direction with respect to one element. contact with each other, or one or more other elements are disposed between the two elements to form (indirectly). Also, when expressed as "on or under", it may include not only the upward direction but also the downward direction with respect to one element. contact with each other, or one or more other elements are disposed between the two elements to form (indirectly). Also, when expressed as "on or under", it may include not only the upward direction but also the downward direction with respect to one element. contact with each other, or one or more other elements are disposed between the two elements to form (indirectly). Also, when expressed as "on or under", it may include not only the upward direction but also the downward direction with respect to one element. contact with each other, or one or more other elements are disposed between the two elements to form (indirectly). Also, when expressed as "on or under", it may include not only the upward direction but also the downward direction with respect to one element. contact with each other, or one or more other elements are disposed between the two elements to form (indirectly). Also, when expressed as "on or under", it may include not only the upward direction but also the downward direction with respect to one element.

[0037] Hereinafter, although the embodiments will be described in detail with reference to the accompanying drawings, regardless of the reference numerals, the same or corresponding components will be given the same reference numerals, and duplicate descriptions thereof will be omitted. Figure 1 is a cross-sectional view of a motor according to an embodiment of the present invention.

[0038] Referring to Figure 1, a motor 100 according to an embodiment of the present invention includes a housing 110, a stator 140 disposed in the housing 110, a rotor 130, a rotating shaft 150, and

[0039] a bus bar 160. Referring to Figure 1, a motor 100 according to an embodiment of the present invention includes a housing 110, a stator 140 disposed in the housing 110, a rotor 130, a rotating shaft 150, and a bus bar 160.

[0040] The housing 110 can accommodate the stator 140 and the rotor 130. The hou sing 110 may further include a cooling structure (not shown) so as to easily discharge internal heat. The cooling structure can be selected from, but is not limited to, an air-cooled or water-cooled structure.

[0041] The stator 140 is inserted into the internal space of the housing 110. The stator 140 can include a stator core 141 and a coil 142 wound around the stator core 141. The stator core 141 can include a plurality of divided cores. However, not necessarily limited thereto, the stator core 141 may be integrally manufactured.

[0042] The rotor 130 can be rotatably arranged with respect to the stator 140. That is, the ro tor 130 can rotate inside the stator 140. A rotor magnet 132 can be attached to the outer peripheral surface of the rotor 130.

[0043] A rotating shaft 150 can be coupled to the central portion of the rotor 130. Accordingly, the rotor 13 0 and the rotating shaft 150 can rotate together. The rotating shaft 150 can be supported by a first bea ring 171 arranged on one side and a second bearing 172 arranged on the other side.

[0044] The bus bar 160 is electrically connected to the coils 142 wound around the stator 140, respectively, and can include a plurality of terminals connecting the U-phase, V-phase, and W-phase. The power supply terminal 164 of the bus bar 160 can be exposed to the outside and electrically connected to an external power supply or an inverter.

[0045] Figure 2 illustrates a state in which the bus bar and the stator according to an embodiment of the present invention are electrically connected. It is a drawing for [purpose], and FIG. 3 is a drawing for explaining the three-phase circuit of the motor according to an embodiment of the present invention. It is a drawing for [purpose], FIG. 4 is a modified example of FIG. 3, and FIG. 5 is a drawing for explaining the arrangement of a plurality of neutral terminals according to the circuit configuration of FIG. 4. Referring to FIG. 2, the stator 140 can include a plurality of split cores 141a and a plurality of coils 142 wound around each split core 141a. The coil 142 can include one end 142a and the other end 142b extending axially (in the length direction of the rotation axis) from the split core 141a. One end 142a can be the point where the winding starts, and the other end 142b can be the point where the winding ends. However, it is not necessarily limited to this. Exemplarily, one end 142a can be the point where the winding ends, and the other end 142b can be the point where the winding starts.

[0046] Referring to FIG. 2, the stator 140 can include a plurality of split cores 141a and a plurality of coils 142 wound around each split core 141a. The coil 142 can include one end 142a and the other end 142b extending axially (in the length direction of the rotation axis) from the split core 141a. One end 142a can be the point where the winding starts, and the other end 142b can be the point where the winding ends. However, it is not necessarily limited to this. Exemplarily, one end 142a can be the point where the winding ends, and the other end 142b can be the point where the winding starts. The plurality of coils 142 can have one end 142a electrically connected to the neutral terminal 162, and the other end 142b can be electrically connected to any one of the drive terminals 163. However, it is not necessarily limited to this. Exemplarily, one end 142a can be the point where the winding ends, and the other end 142b can be the point where the winding starts. The plurality of coils 142 can have one end 142a electrically connected to the neutral terminal 162, and the other end 142b can be electrically connected to any one of the drive terminals 163.

[0047] The plurality of coils 142 can have one end 142a electrically connected to the neutral terminal 162, and the other end 142b can be electrically connected to any one of the drive terminals 163.

[0048] The bus bar 160 can include an insulating body 161, a plurality of neutral terminals 162, and a plurality of drive terminals 163. The insulating body 161 can electrically insulate the plurality of neutral terminals 162 and the plurality of drive terminals 163 from each other. The insulating body 161 can include a plurality of insertion grooves 161b into which the plurality of drive terminals 163 can be mounted. The neutral terminal 162 is exemplified as being integrally injection-molded with the insulating body 161, but it is not necessarily limited to this. The insulating body

[0049] The insulating body 161 can electrically insulate the plurality of neutral terminals 162 and the plurality of drive terminals 163 from each other. The insulating body 161 can include a plurality of insertion grooves 161b into which the plurality of drive terminals 163 can be mounted. The neutral terminal 162 is exemplified as being integrally injection-molded with the insulating body 161, but it is not necessarily limited to this. The insulating body 161 can include a plurality of insertion grooves 161b into which the plurality of drive terminals 163 can be mounted. The neutral terminal 162 is exemplified as being integrally injection-molded with the insulating body 161, but it is not necessarily limited to this. The insulating body 161 can include a plurality of insertion grooves 161b into which the plurality of drive terminals 163 can be mounted. The neutral terminal 162 is exemplified as being integrally injection-molded with the insulating body 161, but it is not necessarily limited to this. The insulating body 161 is not particularly limited as long as it is a material having insulating properties. Exemplarily, the insulating body 161 can be manufactured by injection molding a plastic resin.

[0050] A plurality of insertion grooves 161b can be formed with a predetermined interval so that the drive terminal 163 is electrically insulated. The interval between the insertion grooves 161b can be 0.5 mm to 2.0 mm, but is not limited thereto. The plurality of insertion grooves 161b can have the same spiral shape. The insulating body 161 can be a disk shape with a first hole 161a formed at the center, but is not limited thereto.

[0051] The neutral terminal 162 can perform the role of connecting the neutral points of the plurality of coils 142. At this time, the neutral terminal 162 can include a plurality of electrically insulated neutral terminals 162. Therefore, the motor 100 can have a plurality of neutral points, and the plurality of neutral points can be electrically insulated.

[0052] The plurality of drive terminals 163 can be connected to the power supply terminal 164. That is, the drive terminal 163 and the power supply terminal 164 can have a separated structure. According to such a structure, an inverter can be directly connected to the upper side of the bus bar 160, and the structure of the power supply terminal 164 can be appropriately deformed according to the structure of the motor. However, it is not necessarily limited thereto, and the power supply terminal 164 may be in the form of a power cable. The power supply terminal 164 can include a fixing portion 164a in which a plurality of connection pins 164b and connection pins 164b for electrically connecting the plurality of drive terminals 163 are arranged.

[0053] The plurality of drive terminals 163 serve to supply a three-phase power source to the coil 142. This can be achieved. By electrically connecting the terminals of the bus bar 160 and the coil 142, a three-phase circuit can be realized.

[0054] The plurality of drive terminals 163 can include a plurality of first drive terminals UT1, UT2, second drive terminals VT1, VT2, and third drive terminals WT1, WT2. The first drive terminals UT1, UT2 can be U-phase terminals, the second drive terminals VT1, VT2 can be V-phase terminals, and the third drive terminals WT1, WT2 can be W-phase terminals.

[0055] The U-phase terminals UT1, UT2 can include a first U-phase terminal UT1 and a second U-phase terminal UT 2, the V-phase terminals VT1, VT2 can include a first V-phase terminal VT1 and a second V-phase terminal VT2, and the W-phase terminals WT1, WT2 can include a first W-phase terminal WT1 and a second W -phase terminal WT2. Such a configuration can form a plurality of three-phase circuits within the motor. However, the number of each terminal is not limited.

[0056] Referring to FIGS. 3 and 4, the motor can include two independent three-phase circuits. The first circuit can be realized by connecting the first U-phase terminal UT1, the first V-phase terminal VT1, and the first W-phase terminal WT1 to a plurality of coils U1, U3, V1, V3, W1, W3.

[0057] The second circuit can be realized by connecting the second U-phase terminal UT2, the second V-phase terminal VT2, and the second W-phase terminal WT2 to a plurality of coils U2, U4, V2, V4, W2, W4. It is possible. The first circuit can be an independent circuit connected to the first neutral point (N1), and the second circuit can be an independent circuit connected to the second neutral point (N2).

[0058] At this time, the set of coils constituting the first circuit can be defined as the first coil groups U1, U3, V1, V3, W1, W3, and the set of coils constituting the second circuit can be defined as the second coil groups U2, U4, V 2, V4, W2, W4.

[0059] Referring to FIG. 4, the motor may have four neutral points (N1 to N4). The first circuit can include the first neutral point (N1) and the second neutral point (N2), and the second circuit can include the third neutral point (N3) and the fourth neutral point (N4). If necessary, each three-phase circuit may include more neutral points.

[0060] Referring to FIG. 5, since the neutral terminal 162 has four neutral points, four neutral terminals 162 that are electrically insulated from each other can be arranged. At this time, each neutral terminal 162 can have the same shape. Specifically, the neutral terminal can include a main body portion 162 1 having a curvature, an extension portion 1622 bent in the axial direction, and a connection portion 1623 .

[0061] However, it is not necessarily limited to this. Since it has two neutral points as shown in FIG. 3, the neutral terminal 162 may be two, and their shapes may be different from each other.

[0062] FIG. 6 is a drawing for explaining the shape of the drive terminal, FIG. 7 is a drawing for explaining the arrangement of a plurality of drive terminals , and FIG. 8 is a plan view of FIG. 7.

[0063] Referring to FIG. 6, a plurality of drive terminals 163 may include a main body portion 1631, a connection portion 1634 connected to the main body portion 163 1, and a terminal portion 16 35 that protrudes axially from the main body portion 1631.

[0064] The main body portion 1631 extends to a predetermined length and connects a plurality of connection portions 1634. The main body portion 16 31 may be in the shape of a strip with a curvature. The radius of curvature of the main body portion 1631 may change from one end 1632 to the other end 1633.

[0065] The main body portion 1631 may have a spiral shape. Here, the spiral shape is defined as a structure in which the radius of curvature changes from one end 1632 to the other end 1633. The radius of curvature may increase from one end 1632 to the other end 1633. However, it is not limited thereto, and the radius of curvature may decrease from one end to the other end. The radius of curvature of one end 1 632 may be 20 mm, and the radius of curvature of the other end 633 may be 30 mm, but it is not limited thereto.

[0066] As described above, the motor according to the embodiment arranges a plurality of terminals for connecting each phase. Therefore, the number of terminals can be doubled compared to existing motors. Such a spiral shape may be advantageous for arranging a plurality of terminals in a limited space. The thickness of the main body portion 1631 may be 0.5 to 2.0 mm, but it is not limited thereto.

[0067] The connection portion 1634 is a portion electrically connected to the coil. The connection portion 1634 may be in a hook shape or a Y shape, but is not limited thereto. The connection portion 1634 is on the main body portion 1631. The first connection part 1634a connected to one end 1632 and the other end 1633 of the main body part 1631 can include the second connection part 1634b connected to it. If necessary, the number of connection parts can be even more.

[0068] The terminal part 1635 can protrude axially from the main body part 1631. The terminal part 1635 can be connected to an external power source or an inverter to apply power to the connection part 1634.

[0069] An extension part 1638 can be formed between the main body part 1631 and the connection part 1634.

[0070] The extension part 1638 can include a first bending part 1637 protruding axially and a second bending part 163 6 extending in a direction perpendicular to the axial direction from the first bending part 163 7. The height of the connection part 1634 can be determined by the height of the first bending part 1637. The terminal part 1635 can be arranged on the extension part 1638.

[0071] The length of the second bending part 1636 connected to the first connection part 1634a can be longer than the length of the second bending part 163 6 connected to the second connection part 1634b.

[0072] Such a structure can expose the connection part outside the insulating body in a spiral arrangement to enable electrical connection with the coil.

[0073] Referring to FIG. 7, a plurality of U-phase terminals UT1, UT2, V-phase terminals VT1, VT2, and W-phase terminals WT1, WT2 can all have the same shape. In this case, since there is no need to manufacture each terminal separately, it has the effect of reducing manufacturing costs, and there is an advantage that the assembly becomes simple.

[0074] ​ A plurality of U-phase terminals UT1, UT2, V-phase terminals VT1, VT2, and W-phase terminals WT1, WT2 can all be arranged on the same plane. That is, the plurality of U -phase terminals UT1, UT2, V-phase terminals VT1, VT2, and W-phase terminals W T1, WT2 can be electrically connected to the coil at the same height.

[0075] The first U-phase terminal UT1, the first V-phase terminal VT1, and the first W-phase terminal W T1 can be the first terminal assembly 163a that constitutes the first circuit, and the second U-phase terminal UT2, the second V-phase terminal VT2, and the second W-phase terminal WT2 can be the second terminal assembly 163b that constitutes the second circuit.

[0076] Referring to FIG. 8, the diameter of the first virtual circle CL1 connecting one ends 1632 of the first U-phase terminal UT1, the second U-phase terminal UT2, the first V-phase terminal VT1, the second V-phase terminal VT2, the first W-phase terminal WT1, and the second W-phase terminal WT2 may be smaller than the diameter of the second virtual circle CL2 connecting the other ends 1633. Therefore, a dense arrangement may be possible within a limited space.

[0077] At this time, the diameter of the first hole 161a formed in the insulating body may be smaller than the diameter of the first virtual circle CL1, and the centers P of the first hole 161a, the first virtual circle CL1, and the second virtual circle CL2 may be the same. Also, the angles θ between the virtual straight lines L1 to L6 connecting one ends 1632 of each terminal from the center P may all be the same.

[0078] FIG. 9 is a block diagram of a power transmission system according to an embodiment of the present invention, and FIG. 10 is a modification of FIG. 9. ​

[0079] Referring to FIG. 9, a power transmission system according to an embodiment of the present invention includes a first circuit 100a and a motor 100 including a second circuit 100b, a first drive unit 30 electrically connected to the first circuit 100a, and a second drive unit 40 electrically connected to the second circuit 100b, and also includes a control unit 10 for controlling the first drive unit 30 and the second drive unit 40.

[0080] The first circuit 100a and the second circuit 100b of the motor 100 may include the above-described configurations as they are. The first circuit 100a includes a first coil group and a first terminal assembly for electrically connecting the first coil group, and the second circuit 100b includes a second coil group and a second terminal assembly for electrically connecting the second coil group.

[0081] The first terminal assembly may include a first U-phase terminal UT1, a first V-phase terminal VT1, and a first W-phase terminal WT1, and the second terminal assembly may include a second U-phase terminal UT2, a second V-phase terminal VT2, and a second W-phase terminal WT2.

[0082] The first drive unit 30 and the second drive unit 40 may be inverters that convert a DC power supply supplied from the power supply unit 20 into a three-phase power supply. The power supply unit 20 may be a vehicle battery.

[0083] The first drive unit 30 is connected to the U-phase, V-phase, and W-phase of the first circuit 100a to supply a three-phase power supply, and the second drive unit 40 is connected to the U-phase, V-phase, and W-phase of the second circuit 100b to supply a three-phase power supply. That is, the first drive unit 30 and the second drive unit 40 It can independently drive the first circuit 100a and the second circuit 100b. Therefore, When either the first drive unit 30 or the second drive unit 40 malfunctions the motor 100 can still be operated by the remaining one drive unit. Thus, it can be suitable for fields that require a high degree of stability, such as vehicles.

[0084] The control unit 10 can output control signals to the first drive unit 30 and the second drive unit 40 according to the driving conditions sensed by a vehicle speed sensor, a torque angle sensor, a torque sensor, etc. The control unit 10 can be an electronic control unit (ECU). tronic Control Unit, ECU).

[0085] Referring to FIG. 10, the control unit 10 can include a first control unit 11 for controlling the first drive unit 30 and a second control unit 12 for controlling the second drive unit 40. In this case, even when either the first control unit 10 or the second control unit 10 malfunctions, the remaining control unit 10 can control the motor. ​​​​​​

Claims

1. An insulating body; A plurality of first drive terminals disposed on the insulating body; A plurality of second drive terminals disposed on the insulating body; A plurality of third drive terminals disposed on the insulating body; and A neutral terminal disposed on the insulating body, One ends of the plurality of first drive terminals, the plurality of second drive terminals, and the plurality of third drive terminals are arranged along a first virtual circle, The other ends of the plurality of first drive terminals, the plurality of second drive terminals, and the plurality of third drive terminals are arranged along a second virtual circle, The diameter of the second virtual circle is larger than the diameter of the first virtual circle, The center of the second virtual circle coincides with the center of the first virtual circle, and the plurality of first drive terminals, the plurality of second drive terminals, and the plurality of third drive terminals Have a body portion with the one end and the other end; A connection portion connected to the body portion; and Include a terminal portion protruding axially from the body portion, The connection portion is disposed at the one end and the other end of the body portion respectively, and the terminal portion is disposed between the one end and the other end, The neutral terminal includes a plurality of neutral terminals, The plurality of neutral terminals have the same shape, The plurality of first to third drive terminals are disposed on the same plane, The plurality of neutral terminals are disposed below the plurality of first to third drive terminals, The connection portions of the plurality of first to third drive terminals and the connection portions of the plurality of neutral terminals are arranged so as not to overlap in a plane, A bus bar.

2. The connecting portion includes a first connecting portion connected to one end of the main body portion and electrically connected to the coil, and a second connecting portion connected to the other end of the main body portion and electrically connected to the coil. The bus bar according to claim 1.

3. The connecting portion is composed only of a first connecting portion connected to one end of the main body portion and a second connecting portion connected to the other end of the main body portion. The bus bar according to claim 1.

4. The connecting portion is composed only of a first connecting portion connected to one end of the main body portion and a second connecting portion connected to the other end of the main body portion. The bus bar according to claim 1.

5. The connecting portion includes a hook shape or a Y shape. The bus bar according to any one of claims 1 to 4.

6. It includes an extension portion disposed between the first connecting portion and the main body portion. The extension portion includes a first bent portion protruding in the axial direction and a second bent portion extending from the first bent portion in a direction perpendicular to the axial direction. The bus bar according to any one of claims 2 to 4.

7. The main body portion is strip-shaped. The bus bar according to any one of claims 1 to 6.

8. Housing; A stator disposed in the housing; A rotor disposed in the housing; A rotating shaft disposed in the housing; and It includes a bus bar disposed on the stator. The bus bar is An insulating body; A plurality of first drive terminals disposed on the insulating body; A plurality of second drive terminals disposed on the insulating body; A plurality of third drive terminals disposed on the insulating body; and A neutral terminal disposed on the insulating body, One ends of the plurality of first drive terminals, the plurality of second drive terminals, and the plurality of third drive terminals are arranged along a first virtual circle, The other ends of the plurality of first drive terminals, the plurality of second drive terminals, and the plurality of third drive terminals are arranged along a second virtual circle, The diameter of the second virtual circle is larger than the diameter of the first virtual circle, The center of the second virtual circle coincides with the center of the first virtual circle, The plurality of first drive terminals, the plurality of second drive terminals, and the plurality of third drive terminals, Have a body portion with the one end and the other end; A connecting portion connected to the body portion; and Include a terminal portion protruding axially from the body portion, The connecting portion is respectively disposed at the one end and the other end of the body portion, and the terminal portion is disposed between the one end and the other end, The neutral terminal includes a plurality of neutral terminals, The plurality of neutral terminals have the same shape, The plurality of first to third drive terminals are arranged on the same plane, The plurality of neutral terminals are disposed below the plurality of first to third drive terminals, The connecting portions of the plurality of first to third drive terminals and the connecting portions of the plurality of neutral terminals are arranged so as not to overlap in a plane. Motor.

9. The connecting portion includes a first connecting portion connected to one end of the body portion and electrically connected to the coil, and a second connecting portion connected to the other end of the body portion and electrically connected to the coil. The motor according to claim 8.

10. The connection part is composed of only a first connection part connected to one end of the main body part and a second connection part connected to the other end of the main body part. The motor according to claim 8.

11. The connection part is composed of only a first connection part connected to one end of the main body part and a second connection part connected to the other end of the main body part. The motor according to claim 8.

12. The connection part includes a hook shape or a Y shape. The motor according to any one of claims 8 to 11.

13. It includes an extension part arranged between the first connection part and the main body part. The extension part includes a first bending part protruding in the axial direction and a second bending part extending from the first bending part in a direction perpendicular to the axial direction. The motor according to any one of claims 9 to 11.

14. The main body part is strip-shaped. The motor according to any one of claims 8 to 13.

15. The shapes of the plurality of first drive terminals, the plurality of second drive terminals, and the third drive terminal are the same. The motor according to any one of claims 8 to 14.

16. The insulating main body includes insertion grooves in which the plurality of first drive terminals, second drive terminals, and third drive terminals are arranged. The motor according to any one of claims 8 to 15.

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