WO2013069129A1 - 回転電機 - Google Patents
回転電機 Download PDFInfo
- Publication number
- WO2013069129A1 WO2013069129A1 PCT/JP2011/075903 JP2011075903W WO2013069129A1 WO 2013069129 A1 WO2013069129 A1 WO 2013069129A1 JP 2011075903 W JP2011075903 W JP 2011075903W WO 2013069129 A1 WO2013069129 A1 WO 2013069129A1
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- WIPO (PCT)
- Prior art keywords
- electrical machine
- rotating electrical
- winding
- switching control
- control unit
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
Definitions
- the disclosed embodiment relates to a rotating electrical machine.
- Patent Document 1 describes a motor that is integrally provided with a motor body and a winding switch that switches the windings of the motor body.
- a winding switch is provided on the outer surface of the motor main body on the side opposite to the load.
- the winding switch has a heat generating component such as a winding switching module or a diode composed of semiconductor switching elements.
- a heat generating component such as a winding switching module or a diode composed of semiconductor switching elements.
- the amount of heat generated by these heat generating components is smaller than the amount of heat generated by the windings of the motor body, so the ambient temperature in the winding switch is lower than the ambient temperature in the motor body.
- the winding switching device is provided adjacent to the motor body having a high ambient temperature.
- the connection configuration between the winding and the winding switching device is not clearly described in Patent Document 1, since the motor main body and the winding switching device are disposed adjacent to each other, the winding with a large amount of heat generation is performed.
- a configuration is conceivable in which the end of the wire is directly introduced into the winding switch and connected to a terminal or the like in the winding switch. For this reason, there is a possibility that the influence of the heat received by the winding switching device from the motor main body may increase.
- the present invention has been made in view of such problems, and an object of the present invention is to provide a rotating electrical machine capable of reducing the influence of heat received by the winding switch from the rotating electrical machine main body.
- a rotating electrical machine main body including a stator and a rotor, and a winding switch that includes a plurality of electronic components and switches the windings of the stator.
- a wiring chamber having a first terminal block for electrically connecting the end of the winding and the electronic component, the wiring chamber having the rotating electrical machine main body and the winding switching A rotating electrical machine disposed between the units is applied.
- FIG. 2 is a view showing the assembled electric motor in an axial cross-section as seen from the line AA in FIG.
- FIG. 3 is a plan view of the wiring unit as seen from a cross section taken along line BB in FIG. 2.
- FIG. 3 is a plan view of the switching control unit viewed from a cross section taken along the line CC in FIG. 2.
- FIG. 3 is an axial sectional view of the switching control unit frame as viewed from a cross section taken along line DD in FIG. 2.
- FIG. 6 is a side cross-sectional view of the switching control unit frame as seen from a cross section taken along line EE in FIG. 5. It is a sectional side view corresponding to FIG. 6 of the switching control unit frame provided with the water cooling cooling chamber of the modification. It is a sectional side view corresponding to FIG. 2 of the electric motor when the terminal block for winding is fixed to the water-cooled cooling chamber.
- FIG. 1 is a perspective view showing the entire appearance of a state where an electric motor according to an embodiment is disassembled for each main component
- FIG. 2 is a perspective view of the electric motor in an assembled state taken along line AA in FIG. It is the figure represented by the axial direction cross section seen from the line.
- the electric motor in the illustrated example is a rotary electric motor applied to, for example, a drive motor for an electric vehicle.
- wiring such as cables is omitted in order to avoid the complexity of illustration.
- the electric motor 100 includes an electric motor main body 1, a wiring unit 2, a switching control unit 3, and a lid 4.
- the overall appearance of the electric motor body 1 is substantially cylindrical, and an output shaft 12 (described later) is projected at the axial end of one side (the lower left side in FIG. 1 and the left side in FIG. 2), and the opposite side.
- a wiring unit 2 having a substantially the same outer diameter and a short shape in the axial direction and a switching control unit 3 are coaxially overlapped and connected to the axial ends on the upper right side in FIG. 1 and the right side in FIG. is doing.
- the overlapping order is the order of the electric motor main body 1, the wiring unit 2, and the switching control unit 3.
- the lid portion 4 having the same outer diameter is attached to the open end portion of the switching control unit 3, so that the entire electric motor 100 is configured as a substantially cylindrical assembly.
- the electric motor main body 1 has an electric motor main body frame 11, an output shaft 12, a rotor 13 in which permanent magnets are embedded, a stator 14 having windings, and a resolver 15.
- the electric motor main body frame 11 is formed in a substantially cylindrical shape as a whole, the axial end on one side (the lower left side in FIG. 1 and the left side in FIG. 2) is closed by a blocking wall 11a, and the other side (FIG. 1).
- the axial end on the upper right side in the middle and the right side in FIG. 2 is open.
- the output shaft 12 passes through the blocking wall 11a, and the wiring unit 2 is connected to the end portion in the axial direction on the open side.
- a support wall 11b is provided at an axial position close to the opening side in the electric motor body frame 11, and the support wall 11b and the blocking wall 11a are connected to the output shaft 12 via a bearing 11c at the respective center positions. It is supported rotatably.
- a cooling water passage 11e through which cooling water can be circulated in the circumferential direction is provided in the outer peripheral side wall 11d of the electric motor main body frame 11 over the entire circumference.
- the cooling water passage 11e is connected to an external cooling water pump through a pipe for circulating the cooling water (both the pipe and the cooling water pump are not shown). By causing the cooling water to flow through the cooling water passage 11e, the heat generated by the electric motor body 1 can be absorbed.
- the rotor 13 in which permanent magnets are embedded is formed in a substantially cylindrical shape, and is coaxially fixed to the output shaft 12 inside the electric motor main body frame 11.
- the stator 14 having windings is formed in a cylindrical shape, and is fixed to the inner peripheral surface of the motor main body frame 11 so as to surround the outer peripheral side of the rotor 13 embedded with the permanent magnet.
- one end (the lower left side in FIG. 1 and the left side in FIG. 2) of the output shaft 12 protrudes through the blocking wall 11a of the motor body frame 11, and the other side (see FIG. 1 is located within the electric motor main body frame 11.
- a resolver 15 for detecting the rotation speed and rotation position of the output shaft 12 is provided at the other end of the output shaft 12.
- the electric motor body 1 configured as described above has a three-phase alternating current capable of rotationally driving the rotor 13 and the output shaft 12 embedded with permanent magnets by supplying three-phase alternating current power to a stator 14 having a winding.
- This is a synchronous motor, and the resolver 15 can detect the rotation angle of the rotor.
- the stator 14 having windings includes two sets of windings configured by winding three windings corresponding to each phase of the three-phase AC in parallel. When three-phase alternating current is supplied to only one of these windings, the impedance is low, so that a sufficient current can flow even in the high frequency region, which is suitable for driving the motor 100 at high speed.
- the switching control unit 3 is a unit that performs switching control of how the two sets of windings are connected and supplied to the three-phase AC power supplied from the outside, and the wiring unit 2 is a three-phase AC power. It is a unit that optimally arranges and accommodates cables connecting the power supply terminal, the switching control unit 3 and the two sets of windings of the electric motor body 1.
- FIG. 3 is a plan view of the wiring unit 2 as seen from the cross section taken along the line BB in FIG. 1 to 3, the wiring unit 2 has a wiring unit frame 21, a winding terminal block 22, a power supply terminal block 23, and a shield plate 24.
- the external appearance of the wiring unit frame 21 has a substantially cylindrical shape having the same outer diameter as that of the electric motor main body frame 11 except that the outer peripheral portion has a corner 21a at the position where the power supply terminal block 23 is arranged.
- the wiring unit frame 21 has a shielding wall 21b at the axial end on the side (the lower left side in FIG. 1, the left side in FIG. 2, the back side in FIG. 3) connected to the motor body frame 11.
- the axial end of the opposite side (the upper right side in FIG. 1, the right side in FIG. 2, the near side in FIG. 3) is open.
- a winding terminal block 22 is fixed to the shielding wall 21b at a position near the axis center, and a power supply terminal block 23 is fixed to the corner portion 21a.
- the winding terminal block 22 is entirely formed of a molded resin member, and integrally includes a base portion 22a that is directly fixed to the shielding wall 21b and a connecting portion 22b that is connected to the switching control unit 3. .
- the base portion 22a has a substantially rectangular parallelepiped shape whose height from the installation surface with the shielding wall 21b is relatively low.
- the connecting portion 22b is arranged at the same length in the longitudinal direction along one side in the width direction of the base portion 22a (the upper side in FIGS. 2 and 3), and the upper end thereof is the opening side end of the wiring unit frame 21. It has a substantially rectangular parallelepiped shape that is high enough to protrude from the portion.
- the winding terminal block 22 has a shape in which a substantially L-shaped cross section as shown in FIG. 2 continues in the longitudinal direction.
- the base portion 22a of the winding terminal block 22 is off the center of the shielding wall 21b and the side along the longitudinal direction of the shielding wall 21b is aligned with the shielding wall 21b. It is fixed in the arrangement of strings.
- the connection part 22b is located in the side near the outer peripheral side of the shielding wall 21b in the base part 22a.
- terminal coupling portions 22c are provided at equal intervals or unequal intervals along the longitudinal direction.
- a dividing wall 22d that is slightly higher is provided between two adjacent terminal coupling portions 22c.
- six connecting portions 22e are provided at the front end portion of the connecting portion 22b in the longitudinal direction at regular intervals or at irregular intervals (see FIG. 4 described later).
- the terminal coupling portion 22c and the connection portion 22e located at the same longitudinal position are electrically connected via a base 22a and a metal bus bar 22f provided inside the coupling portion 22b.
- the power supply terminal block 23 has a shape in which a substantially L-shaped cross section is continuous in the longitudinal direction, and is disposed at a corner 21 a on the outer peripheral side of the wiring unit frame 21. And is fixed to the shielding wall 21b.
- the power supply terminal block 23 is provided with three power supply coupling portions 23a arranged at equal intervals or unequal intervals in the longitudinal direction. These three power supply coupling portions 23a are connected to an external inverter (not shown) via an external power supply cable 25.
- a shield plate 24 made of, for example, a magnetic material having a slightly larger outer diameter than the resolver 15 provided in the electric motor main body 1 is provided. Further, in the shielding wall 21b, two insertion holes 21c and 21d are provided adjacent to each other at an appropriate circumferential position on the outer peripheral side of the shield plate 24. Further, in the shielding wall 21 b, a communication hole 21 e for passing the wiring of the resolver 15 to the inside of the wiring unit frame 21 through the shielding wall 21 b is provided at a position on the outer peripheral side from the winding terminal block 22. Yes.
- the three on the left side in FIG. 3 are coupling portions for coupling the terminals of the high-speed cable 26.
- 3 on the right side in FIG. 3 are coupling portions for coupling the terminals of the low-speed cable 27, respectively.
- the connecting portion 22b is divided into two in the longitudinal direction corresponding to the high-speed cable 26 and the low-speed cable 27, respectively.
- the three power supply coupling portions 23 a provided on the power supply terminal block 23 are coupling portions for coupling the terminals of the power supply cable 28, respectively. In each coupling portion, the terminals of each cable are coupled by fastening bolts or the like.
- Three high-speed cables 26, low-speed cables 27, and power-supply cables 28 are wired each, and the breakdown of these three corresponds to the U, V, and W phases of the three-phase AC.
- the power cable 28 is a cable through which a driving three-phase alternating current supplied from an external inverter (not shown) flows.
- the high-speed cable 26 is a cable that is connected to the two sets of windings provided in the electric motor body 1 at the time of switching the high-speed drive, and a relatively large current flows depending on the connection switching state. Is used.
- the low-speed cable 27 is a cable that is connected to the two sets of windings provided in the electric motor body 1 at the time of switching the low-speed drive, and the power cable is in any switching state. Since a current equal to or lower than that of the current 28 flows, a cable having the same thickness as the power cable 28 is used.
- the three high-speed cables 26 are inserted into the electric motor body 1 through the insertion holes 21c located closest to the winding terminal block 22.
- the three low-speed cables 27 pass through the other insertion hole 21d and are inserted into the electric motor body 1.
- the six cables including the high-speed cable 26 and the low-speed cable 27 that are inserted into the electric motor body 1 are wound on the inner peripheral side of the electric motor body frame 11. It is stored in a state where it is wound many times in the direction, and each end portion from the winding portion 29 is connected to two sets of windings (in FIG. 2, this winding portion 29 is included). The entire wiring is omitted).
- the winding path of the cable winding portion 29 in the electric motor main body 1 is along the inner surface of the outer peripheral side wall 11d of the electric motor main body frame 11 having an outer diameter equivalent to that of the wiring unit frame 21 as seen from the cross section of FIG. A circular path drawn in a counterclockwise direction (not shown).
- the high-speed cable 26 arranged as shown in FIG. 3 can be routed so as to be able to enter through a wiring path having a relatively small curvature (a large curvature radius).
- the low-speed cable 27 arranged in FIG. 3 is routed so as to enter the same circular path through a wiring path having a relatively large curvature (small curvature radius).
- the dividing wall 22d between the two terminal coupling portions 22c adjacent on the upper surface of the base portion 22a is provided in a direction along the wiring path of the nearby cable.
- the three thickest high-speed cables 26 are wired on the radially outermost side of the winding terminal block 22, and the thinnest low-speed cable 27 is used for winding.
- each terminal block 22 is connected so as to be wired at a substantially central position in the radial direction.
- the radial direction means a radial direction in the wiring unit frame 21 having a substantially cylindrical shape.
- three high-speed cables 26 and three low-speed cables 27 are arranged adjacent to each other.
- FIG. 4 is a plan view of the switching control unit 3 as seen from the cross section taken along the line CC in FIG. 1, 2, and 4, the switching control unit 3 includes a switching control unit frame 31, a diode module 32, an IGBT module 33, and a control circuit board 34.
- the appearance of the switching control unit frame 31 has a substantially cylindrical shape with the same outer diameter as that of the motor body frame 11. Further, the switching control unit frame 31 has a water-cooled cooling chamber 35 at the axial end on the side (the lower left side in FIG. 1, the left side in FIG. 2, the back side in FIG. 4) connected to the wiring unit frame 21. The axial end of the opposite side (the upper right side in FIG. 1, the right side in FIG. 2, the near side in FIG. 4) is open.
- the water-cooled cooling chamber 35 is provided so as to open toward the wiring unit 2 in a part of the switching control unit frame 31 in the circumferential direction (the upper part in FIG. 2 and FIG. 4), and to block the entire area otherwise. ing.
- the connecting portion 22b of the winding terminal block 22 passes through an opening portion (hereinafter referred to as an opening 31a) where the water-cooled cooling chamber 35 is not provided, and the switching control unit. It is inserted into the frame 31.
- the structure of the water cooling / cooling chamber 35 will be described in detail later.
- the upper surface wall 35a of the water-cooled cooling chamber 35 (see FIG. 5) is located at the position where the diode module 32 is closer to the opening 31a and the IGBT module 33 is far from the opening 31a. 2 is fixed to the right wall surface in FIG. 2 and the near wall surface in FIG.
- the control circuit board 34 is fixed so as to overlap the upper side (the right side in FIG. 2, the front side in FIG. 4) of the diode module 32 and the IGBT module 33, and external switching (not shown) is performed via the external control cable 36.
- the lid 4 side is the upper side
- the motor body 1 side is the lower side.
- the diode module 32 is connected to each of the six connecting portions 22e at the end of the connecting portion 22b inserted from the wiring unit 2 into the switching control unit 3 through appropriate wiring.
- the IGBT module 33 is connected to the diode module 32 and the control circuit board 34 via appropriate wirings (these wirings are not shown).
- a large current flows through the high-speed cable 26 and the low-speed cable 27 through the connecting portion 22b, the diode module 32, and the IGBT module 33, so that heat is generated at a high temperature. For this reason, it is necessary to make these coupling
- FIG. 5 is a sectional view in the axial direction of the switching control unit frame 31 seen from the section taken along the line DD in FIG. 2, and FIG. 6 is seen from the section taken along the line EE in FIG. 4 is a side sectional view of a switching control unit frame 31.
- FIG. 5 and FIG. 6 mainly represent an axial section and a side section of the water-cooled cooling chamber 35, respectively.
- the water-cooled cooling chamber 35 includes an outer peripheral side portion of the switching control unit frame 31 excluding a peripheral portion of the opening 31a toward the wiring unit 2 and an inner wall portion 31b that partitions the opening 31a.
- a sealed space sandwiched between a lower surface wall 35b positioned on the wiring unit 2 side and an upper surface wall 35a on the opposite side in the axial direction.
- the inner surfaces of the lower surface wall 35b and the upper surface wall 35a are arranged to face each other in parallel.
- the lower wall 35b and the upper wall are extended from the substantially central position to the outer peripheral side wall opposite to the opening 31a (the lower side in FIG. 2 and FIG. 5).
- a partition wall portion 35c for connecting 35a is provided. Therefore, the entire water-cooled cooling chamber 35 seen in the plan view of FIG. 5 has a substantially U-shape (upside down in FIG. 5). . Both ends of the substantially U-shape, that is, the outer peripheral side walls at two positions sandwiching the partition wall 35c on the side opposite to the opening 31a are opened, and the nozzles 37 and 38 are provided in communication with each other. ing. In the example of the present embodiment, the left nozzle 37 in FIG.
- the supply port nozzle 37 and the discharge port nozzle 38 are each connected to an external cooling water pump via piping for circulating cooling water (both the piping and the cooling water pump are not shown).
- the cooling water flows in a direction from the supply port nozzle 37 to the discharge port nozzle 38, but the water-cooled cooling chamber 35 seen in the plan view of FIG.
- the side of the open port 31a (that is, the substantially U-shaped bent side) flows more than the side where the supply port nozzle 37 and the discharge port nozzle 38 are provided (that is, both ends of the approximately U-shape). It is formed to increase the road width. That is, the channel width is formed so as to increase from the two nozzles 37 and 38 side toward the channel rear side. In particular, in the region partitioned by the partition wall 35c, the flow path width is increased from the nozzles 37 and 38 toward the open port 31a.
- a plurality of rectifying fins 35d are provided on the upper surface wall 35a on the wiring unit 2 side.
- the rectifying fins 35d are wall portions that protrude to the extent that they do not reach the lower surface wall 35b from the upper surface wall 35a, and four rectifying fins 35d are provided in each region of the path through which the cooling water flows along the direction of cooling water flow. .
- the flow path width is increased from the nozzles 37 and 38 toward the open port 31a.
- the provided rectifying fins 35d are arranged substantially radially. In other areas, the four rectifying fins 35d are arranged substantially in parallel along the cooling water flow direction.
- a mounting portion 35e having a screw hole 39 for fixing the diode module 32 and the IGBT module 33 in contact with the upper surface wall 35a is provided in the water-cooled cooling chamber 35.
- Each of the rectifying fins 35d is provided in an arrangement that does not interfere with these attachment portions 35e.
- Each attachment portion 35e is provided so as to be connected to both from the upper surface wall 35a to the lower surface wall 35b. In this manner, the diode module 32 and the IGBT module 33 are fixed to the mounting portions 35e via the screws screwed into the screw holes 39, and are in contact with the upper surface wall 35a of the water-cooled cooling chamber 35 in a wide range.
- the water-cooled cooling chamber 35 can absorb the heat.
- the region on the nozzles 37 and 38 side (FIG. 2) having a narrower channel width than the region on the open port 31a side having a wider channel width (the upper region in FIG. 2 and FIG. 5).
- the lower region in FIG. 5 has a higher cooling efficiency because the flow rate of the cooling water is faster.
- the IGBT module 33 having a relatively high heat generation temperature is arranged in the region on the nozzles 37 and 38 side, and the diode module 32 having a relatively low heat generation temperature is arranged in the region on the opening 31a side. Yes.
- the connecting portion 22 b of the winding terminal block 22 inserted through the opening 31 a from the wiring unit 2 into the switching control unit 3 The flat surface of the portion is brought into contact with the inner wall portion 31b on the open port 31a side of the water-cooled cooling chamber 35.
- the power supply terminal block 23 is also a member that generates heat when a current flows, the tip end portion having a substantially L-shaped cross section is brought into contact with the lower surface wall 35b of the water-cooled cooling chamber 35 as shown in FIG. Can absorb heat.
- the wiring connected to the resolver 15 provided in the electric motor body 1 is wired through the communication hole 21e of the wiring unit frame 21 and the opening 31a of the switching control unit frame 31, It is connected to the control circuit board 34.
- the electric motor body 1, the wiring unit 2, the switching control unit 3, and the lid portion 4 are overlapped and connected in this order. It is. Of these, the electric motor body 1 having the stator 14 having windings therein has the largest amount of heat generation, and then the switching control unit 3 having the diode module 32 and the IGBT module 33 inside has the highest amount of heat generation.
- the wiring unit 2 generates heat when a large current flows through the terminal blocks 22 and 23 and the cables 26, 27, and 28 provided therein. However, when viewed in units, the wiring unit 2 is much larger than the motor main body 1 and the switching control unit 3. The calorific value is low. Thereby, the wiring unit 2 functions as a heat insulating chamber that blocks heat transfer from the electric motor body 1 to the switching control unit 3.
- the output shaft 12 corresponds to the shaft described in each claim
- the electric motor main body 1 corresponds to the rotating electrical machine main body described in each claim
- the diode module 32 and the IGBT module 33 correspond to the electronic components described in each claim.
- the switching control unit 3 corresponds to the winding switching device described in each claim
- the winding terminal block 22 corresponds to the first terminal block described in each claim
- the wiring unit 2 corresponds to each claim.
- the electric motor 100 as a whole corresponds to the wiring chamber, and corresponds to the rotating electrical machine described in each claim.
- the water-cooled cooling chamber 35 corresponds to the first refrigerant flow path described in each claim
- the switching control unit frame 31 corresponds to the winding switching housing described in each claim
- the cooling water path 11e corresponds to each claim.
- the electric motor body frame 11 corresponds to the rotating electrical machine casing described in each claim
- the external power cable 25 corresponds to the power cable described in each claim
- the power terminal block 23 corresponds to each
- the lower terminal wall 35b corresponds to the partition wall described in each claim
- the opening 31a corresponds to the communication hole described in each claim.
- the switching control unit 3 includes the heat generating components such as the IGBT module 33 and the diode module 32 configured by semiconductor switching elements as a plurality of electronic components. .
- the amount of heat generated by these heat generating components is smaller than the amount of heat generated by the stator 14 having the windings of the electric motor body 1, so the ambient temperature in the switching control unit 3 is lower than the atmospheric temperature in the electric motor body 1.
- the end of the winding of the stator 14 and the diode module 32 and the IGBT module 33 of the switching control unit 3 are electrically connected.
- the wiring module 2 having the winding terminal block 22 is disposed.
- the wiring module 2 can be functioned as a heat insulation chamber, and the heat
- the switching control unit 3 since the switching control unit 3 includes the switching control unit frame 31 provided with the water cooling cooling chamber 35, switching control is performed by circulating cooling water through the water cooling cooling chamber 35.
- the unit 3 itself can cool the diode module 32 and the IGBT module 33 independently. Thereby, the influence of the heat which the switching control unit 3 receives from the electric motor main body 1 can be made smaller.
- the water-cooled cooling chamber 35 is provided between the diode module 32 and the IGBT module 33 and the wiring unit 2. Thereby, the heat transmitted from the electric motor main body 1 via the wiring unit 2 can be blocked by the water-cooled cooling chamber 35, and the heat transfer to the diode module 32 and the IGBT module 33 can be effectively blocked.
- the stator 14 having the windings provided on the inside thereof can be cooled by the cooling water circulating in the cooling water passage 11e provided in the electric motor body frame 11. Furthermore, in the wiring unit 2, the end of the winding of the stator 14 that is routed in the wiring unit 2 and the winding terminal block 22 generate heat, but the wiring unit 2 is in the cooling water channel 11 e of the motor body frame 11. And the cooling control chamber 35 of the switching control unit frame 31 are arranged so as to be effectively cooled, and an increase in the ambient temperature in the wiring unit 2 can be suppressed. Therefore, the cooling efficiency of the entire electric motor 100 can be improved.
- power from the external power cable 25 is supplied to the stator 14 having windings via the power terminal block 23 provided in the wiring unit 2.
- the wiring unit 2 is effective by being pinched
- the winding terminal block 22 electrically connects the end of the winding to the diode module 32 and the IGBT module 33 via the bus bar 22f inserted through the opening 31a of the switching control unit frame 31. To do. That is, it is possible to convert the end of the winding of the stator 14 into the bus bar 22f with a small calorific value inside the wiring unit 2 and introduce the bus bar 22f into the switching control unit 3. In this way, since it is possible to avoid the end of the winding having a large amount of heat generation being directly introduced into the switching control unit 3, the influence of the heat received by the switching control unit 3 from the electric motor body 1 is further reduced. be able to.
- the winding terminal block 22 is provided as a single unit, but the present invention is not limited to this.
- the two winding terminal blocks 22 may be provided individually corresponding to the high-speed cable 26 and the low-speed cable 27, or may be divided into three or more.
- the three high-speed cables 26 are the thickest, and the three low-speed cables 27 and the three power cables 28 have the same thinness.
- one of the high-speed cables 26 may be the thickest, and the other high-speed cable 26 may be thinner than that, or one of the low-speed cables 27 may be thicker than the thinner high-speed cable. May be. That is, the thickness of the cable may be three or more.
- the wiring path of the thinnest cable may not be located at the radial center position. That is, it suffices as a rule to position the wiring path of the thickest cable at the radially outermost position, and a medium-thickness cable other than that may be positioned at the radial center position.
- the inner surfaces of the lower surface wall 35b and the upper surface wall 35a are arranged to face each other in parallel, but the present invention is not limited to this. Absent.
- the flow path width when viewed from the side is the flow path width W2 on the opening 31a side rather than the flow path width W1 on the nozzles 37 and 38 side.
- the inner surfaces of the lower surface wall 35bA and the upper surface wall 35aA may be inclined with respect to each other so as to be small. That is, the flow path may be formed so that the depth of the flow path becomes shallower from the nozzles 37 and 38 toward the back of the flow path.
- the channel cross-sectional area is made substantially constant while the channel width when viewed from the plane direction of FIG. 5 is expanded from the nozzles 37 and 38 toward the channel back side. It becomes possible to keep. As a result, the flow rate of the cooling water can be kept substantially constant, so that the area of the cooling surface can be increased without lowering the cooling efficiency. As a result, the cooling performance can be further improved.
- the water-cooled cooling chamber 35 having the above-described configuration can be applied to other than the switching control unit 3 and the electric motor 100 described above.
- application to an inverter that generates heat at a high temperature is also effective.
- the rectifying fins 35d are provided with wall portions that protrude from the upper surface wall 35a to the lower surface wall 35b, but are not limited thereto. For example, it may protrude from the lower surface wall 35b, or may protrude from both the lower surface wall 35b and the upper surface wall 35a so as to leave a gap therebetween or to be connected.
- the bottom portion of the power terminal block 23 having a substantially L-shaped cross section is brought into contact with the lower wall 35b of the water cooling cooling chamber 35, and the power terminal block 23 itself is water cooled.
- the cooling efficiency may be further improved by fixing to the cooling chamber 35.
- the members on the wiring unit 2 side only the flat surfaces of the resin portions of the terminal blocks 22 and 23 are brought into contact with the inner wall portion 31b and the lower surface wall 35b of the water-cooled cooling chamber 35, but this is not restrictive.
- the cables 26, 27, and 28 may be wired so as to come into contact with any one of the walls constituting the water-cooled cooling chamber 35.
- the metal bus bar 22 f inside each terminal block 22, 23 may be exposed to the outside, and may be brought into direct contact with any wall portion constituting the water-cooled cooling chamber 35. In this case, a configuration in consideration of insulation between the bus bars is required.
- the electric motor main body frame 11 and the wiring unit frame 21 were comprised separately, it is not restricted to this.
- the motor body frame 11 and the wiring unit frame 21 may be integrally formed.
- the blocking wall 11a needs to be configured separately and removable.
- the wiring unit frame 21 and the switching control unit frame 31 may be integrally formed.
- the electric motor main body 1 and the wiring unit 2 are not necessarily connected adjacent to each other.
- a brake unit connected to the output shaft 12 may be arranged and connected between them.
- the wiring unit 2 and the switching control unit 3 are arranged and connected to the axial direction end on the opposite side to the side from which the output shaft 12 protrudes in the electric motor main body 1, it is not limited thereto.
- the wiring unit 2 and the switching control unit 3 may be arranged and connected to the axial end of the electric motor body 1 on the side where the output shaft 12 is projected. In this case, it is necessary to configure the output shaft 12 to pass through the center position of the wiring unit 2 and the switching control unit 3.
- the support wall 11b as an anti-load side bracket and the wiring unit 2 were made into a different body, for example, the wiring unit frame 21 of the wiring unit 2 is provided with a support wall and is configured to support the bearing 11c. Also good. In other words, the wiring unit 2 may be provided on the anti-load side bracket. Thereby, further miniaturization of the electric motor 100 can be achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
2 配線ユニット(配線室)
3 切替制御ユニット(巻線切替器)
4 蓋部
11 電動機本体フレーム(回転電機筐体)
11e 冷却水路(第2冷媒流路)
12 出力軸(シャフト)
13 回転子
14 固定子
15 レゾルバ
21 配線ユニットフレーム(反負荷側ブラケット)
21c 挿通穴
21d 挿通穴
21e 連通穴
22 巻線用端子台(第1端子台)
22b 連結部
23 電源用端子台(第2端子台)
24 シールド板
25 外部電源ケーブル(電源ケーブル)
26 高速用ケーブル
27 低速用ケーブル
29 巻回部分
28 電源用ケーブル
31 切替制御ユニットフレーム(巻線切替筐体)
31a 開放口(連通孔)
31b 内壁部
32 ダイオードモジュール(電子部品)
33 IGBTモジュール(電子部品)
34 制御回路基板
35 水冷冷却室(第1冷媒流路)
35a 上面壁
35b 下面壁(隔壁部)
35c 仕切り壁部
35d 整流フィン
35e 取付部
37 供給口ノズル
38 排出口ノズル
100 電動機(回転電機)
Claims (7)
- 固定子及び回転子を備えた回転電機本体部と、
複数の電子部品を備え、前記固定子の巻線を切り替える巻線切替器と、
前記巻線の端部と前記電子部品を電気的に接続するための第1端子台を備えた配線室と、を有し、
前記配線室は、
前記回転電機本体部と前記巻線切替器の間に配置されている
ことを特徴とする回転電機。 - 前記巻線切替器は、第1冷媒流路が設けられた巻線切替筐体を有することを特徴とする請求項1に記載の回転電機。
- 前記第1冷媒流路は、前記電子部品と前記配線室の間に設けられることを特徴とする請求項2に記載の回転電機。
- 前記回転電機本体部は、
前記固定子を内側に備え、第2冷媒流路が設けられた回転電機筐体を有することを特徴とする請求項1乃至3のいずれか1項に記載の回転電機。 - 前記配線室は、
電源ケーブルと前記巻線の端部を電気的に接続する第2端子台を備える
ことを特徴とする請求項1乃至4のいずれか1項に記載の回転電機。 - 前記巻線切替筐体は、
前記巻線切替器と前記配線室とを隔てる隔壁部と、
前記巻線切替器と前記配線室とを連通する、前記隔壁部に形成された連通孔と、を有し、
前記第1端子台は、
前記連通孔に挿通されたバスバーを介して前記巻線の端部と前記電子部品を電気的に接続する
ことを特徴とする請求項1乃至5のいずれか1項に記載の回転電機。 - 前記回転電機筐体の反負荷側に配置され、前記回転子を設けたシャフトを支持する軸受を備えた反負荷側ブラケットをさらに有し、
前記配線室は、
前記反負荷側ブラケットに設けられている
ことを特徴とする請求項1乃至6のいずれか1項に記載の回転電機。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013542766A JP5811422B2 (ja) | 2011-11-10 | 2011-11-10 | 回転電機 |
CN201180074769.2A CN103931087B (zh) | 2011-11-10 | 2011-11-10 | 旋转电机 |
PCT/JP2011/075903 WO2013069129A1 (ja) | 2011-11-10 | 2011-11-10 | 回転電機 |
TW101120302A TW201320557A (zh) | 2011-11-10 | 2012-06-06 | 旋轉電機 |
US14/268,434 US20140239755A1 (en) | 2011-11-10 | 2014-05-02 | Rotating electrical machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2011/075903 WO2013069129A1 (ja) | 2011-11-10 | 2011-11-10 | 回転電機 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/268,434 Continuation US20140239755A1 (en) | 2011-11-10 | 2014-05-02 | Rotating electrical machine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013069129A1 true WO2013069129A1 (ja) | 2013-05-16 |
Family
ID=48288725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/075903 WO2013069129A1 (ja) | 2011-11-10 | 2011-11-10 | 回転電機 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140239755A1 (ja) |
JP (1) | JP5811422B2 (ja) |
CN (1) | CN103931087B (ja) |
TW (1) | TW201320557A (ja) |
WO (1) | WO2013069129A1 (ja) |
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GB2506719A (en) * | 2013-06-26 | 2014-04-09 | Protean Electric Ltd | A control module for an electric motor or generator |
EP2846441A3 (en) * | 2013-09-05 | 2015-10-07 | Kabushiki Kaisha Yaskawa Denki | Motor driving apparatus and vehicle |
EP2846442A3 (en) * | 2013-09-05 | 2015-10-07 | Kabushiki Kaisha Yaskawa Denki | Motor driving apparatus and vehicle |
WO2016043174A1 (ja) * | 2014-09-17 | 2016-03-24 | 日立オートモティブシステムズ株式会社 | 可変圧縮制御システム |
JPWO2016047459A1 (ja) * | 2014-09-24 | 2017-08-03 | 日本電産コパル株式会社 | シート着座部振動装置 |
EP3127223B1 (de) | 2014-03-31 | 2018-07-18 | Continental Automotive GmbH | Elektrische maschine |
US20220247254A1 (en) * | 2019-04-23 | 2022-08-04 | Zf Friedrichshafen Ag | Electric Machine Having a Plastic Body |
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JP6183288B2 (ja) * | 2014-05-07 | 2017-08-23 | 株式会社豊田自動織機 | 電動圧縮機 |
JP6569306B2 (ja) * | 2014-09-30 | 2019-09-04 | 日本電産株式会社 | モータ |
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JP6992754B2 (ja) * | 2016-08-05 | 2022-01-13 | 日本電産株式会社 | モータ |
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JP2019170066A (ja) * | 2018-03-23 | 2019-10-03 | 日本電産トーソク株式会社 | モータ |
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GB2506719A (en) * | 2013-06-26 | 2014-04-09 | Protean Electric Ltd | A control module for an electric motor or generator |
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EP2846441A3 (en) * | 2013-09-05 | 2015-10-07 | Kabushiki Kaisha Yaskawa Denki | Motor driving apparatus and vehicle |
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US20220247254A1 (en) * | 2019-04-23 | 2022-08-04 | Zf Friedrichshafen Ag | Electric Machine Having a Plastic Body |
Also Published As
Publication number | Publication date |
---|---|
JPWO2013069129A1 (ja) | 2015-04-02 |
TW201320557A (zh) | 2013-05-16 |
US20140239755A1 (en) | 2014-08-28 |
CN103931087B (zh) | 2016-03-09 |
JP5811422B2 (ja) | 2015-11-11 |
CN103931087A (zh) | 2014-07-16 |
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