WO2021111810A1 - 車両の駆動ユニット - Google Patents
車両の駆動ユニット Download PDFInfo
- Publication number
- WO2021111810A1 WO2021111810A1 PCT/JP2020/041653 JP2020041653W WO2021111810A1 WO 2021111810 A1 WO2021111810 A1 WO 2021111810A1 JP 2020041653 W JP2020041653 W JP 2020041653W WO 2021111810 A1 WO2021111810 A1 WO 2021111810A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- harness
- vehicle
- inverter
- terminal block
- drive unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/0207—Wire harnesses
- B60R16/0215—Protecting, fastening and routing means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
- B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
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- B60K13/02—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning intake
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
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- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Definitions
- the present invention relates to a vehicle drive unit, and particularly relates to a technique for improving the protection performance of a harness.
- hybrid vehicles that can run by using an engine for power generation and using the driving force of a motor are becoming widespread.
- devices driving
- a motor such as a motor, an engine, a generator that converts the driving force generated by the operation of the engine into electric energy, and an inverter that converts alternating current and direct current. Unit
- the inverter is electrically connected to the generator and the motor by a three-phase AC harness.
- This three-phase AC harness is arranged so as to bend in the left-right direction of the vehicle (Patent Document 1).
- the present invention has been made in view of such a problem, and an object of the present invention is to provide a vehicle drive unit capable of improving the mountability of the drive unit on a vehicle.
- the vehicle drive unit of the present invention comprises an internal combustion engine arranged in the engine room of the vehicle, a first electric motor that generates electricity by driving the internal combustion engine, and a traveling battery of the vehicle.
- An electric unit having a second electric motor driven by the supplied electric power and arranged on one side of the internal combustion engine in the vehicle left-right direction, an inverter arranged above the electric unit, the inverter, and the first one.
- a vehicle drive unit including a first harness that electrically connects an electric motor and a second harness that electrically connects the inverter and the second electric motor.
- the inverter is the upper end of the vehicle in the vertical direction.
- a step portion formed so as to be recessed on one side or the other side in the left-right direction of the vehicle, and a first terminal block and a second terminal block arranged on the step portion and to which the first harness and the second harness are connected, respectively.
- the first harness extends downward while extending from the first terminal block toward the outside of the inverter in the left-right direction of the vehicle on the side where the step portion is formed.
- the second harness extends downward while extending outward from the second terminal block on the side where the step portion in the vehicle left-right direction of the inverter is formed, and extends downward to the upper part of the second motor. It is characterized by being connected to.
- the step portion where the first terminal block and the second terminal block are arranged is formed by denting one side or the other side in the vehicle left-right direction at the upper end of the vehicle in the vertical direction of the inverter. Therefore, the widths of the first harness and the second harness in the vehicle left-right direction can be narrowed. As a result, the mountability of the drive unit on the vehicle can be improved.
- FIG. 1 a schematic perspective view of the vehicle 1 is shown.
- the vehicle 1 is a so-called hybrid vehicle including the vehicle 1, the drive wheels 3, the battery pack (running battery) 5, and the drive unit 7.
- This vehicle can run by driving the drive wheels 3 by generating a driving force by a drive unit 7 supplied with electric power from a battery pack 5 arranged on the lower center side in the vehicle front-rear direction of the vehicle body 2. It is configured in.
- the vehicle 1 is configured to be capable of performing so-called regenerative braking in which the vehicle 1 decelerates and generates electric power by the drive unit 7 to supply electric power to the battery pack 5 to store electric power.
- the drive unit 7 is provided with an engine 21 described later, and the vehicle 1 is configured to generate electric power by operating the engine 21 and to supply electric power to the battery pack 5 to store electric power.
- the front and rear in the front-rear direction of the vehicle are simply referred to as front or rear
- the left and right in the left-right direction of the vehicle are simply referred to as left or right
- the upper and lower in the vertical direction of the vehicle are simply referred to as upper or lower.
- FIGS. 2 and 3 a top view of the engine room 10 is shown, and with reference to FIG. 4, a front view of the engine room 10 is shown.
- the engine room 10 is a space formed so as to be covered with a skeleton member on the front side of the vehicle body 2 such as an upper bar 11, an upper side 13, and a floor panel 15.
- a drive unit 7 and an inverter 27 are arranged in the engine room 10.
- the drive unit 7 includes an engine (internal combustion engine) 21, a transaxle (electric unit) 23, a speed reducer (transmission) 24, a drive shaft 25, an inverter 27, and an electric booster (braking force adding device) 29.
- the engine 21 and the transaxle 23 are, for example, the first mount 7a provided on the upper right side of the engine 21, the second mount 7b provided on the upper left side of the transaxle 23, and the lower end of the engine 21.
- the engine 21 is an internal combustion engine that operates by burning fuel stored in a fuel tank (not shown).
- the engine 21 can drive the output shaft 21a (see FIG. 5 to be described later) by operating the engine 21.
- the transaxle 23 is an electric unit fixed to a joint surface (joint portion) 23a on the left side of the engine 21, and has a generator (first electric motor) 31 and a motor (second electric motor) 33.
- An air cleaner 20 is arranged above the engine 21 (see FIG. 3).
- the air cleaner 20 is a device for removing dust and dirt in the air sucked into the engine 21, and is interposed in the middle of the intake passage 22 of the engine 21.
- the intake passage 22 on the downstream side of the air cleaner 20 (outlet side of the intake passage 22 and the engine side) is referred to as a downstream intake passage 22a
- the intake passage 22 on the upstream side of the air cleaner 20 (inlet side of the intake passage 22) is referred to as a downstream intake passage 22a. It is called the upstream intake passage 22b.
- the downstream intake passage 22a extends downward from the front surface of the air cleaner 20.
- the upstream intake passage 22b extends from the left side in the vehicle left-right direction to the diagonally forward left side of the downstream intake passage 22a in front of the air cleaner 20, and bends to the right side of the vehicle after passing above the transaxle 23. Is formed in.
- the generator 31 is a generator that converts the driving force of the output shaft 21a, which is driven by the operation of the engine 21, into electrical energy.
- the motor 33 is an electric motor driven by supplying electric power from the battery pack 5 via the inverter 27. Further, the motor 33 can generate electricity while decelerating the drive wheels 3 by utilizing the rotation of the drive wheels 3 due to the traveling of the vehicle 1.
- the motor 33 is located on the rear side and the upper side of the generator 31.
- the speed reducer 24 is a gear unit located between the engine 21, the generator 31, and the motor 33.
- the speed reducer 24 can reduce the rotational speed of the motor 33 and increase the torque to transmit the driving force to the drive shaft 25.
- the drive shaft 25 is a shaft member having one end connected to the speed reducer 24 and the other end connected to the drive wheels 3 so as to be able to transmit a driving force.
- the inverter 27 is a conversion device capable of converting a direct current into a three-phase alternating current, changing a three-phase alternating current into a direct current, and changing a voltage.
- the inverter 27 is also called a power drive unit (PDU), and incorporates an inverter circuit and an electronic control device.
- Inverter circuits include switch elements such as IGBTs (Insulated Gate Bipolar Transistors) and MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors).
- the electronic control device has a function of controlling the operating state (on / off timing and drive frequency) of the switch element.
- the front end is fixed to the upper bar 11 and the left end is fixed to the upper side 13 (see FIG. 2). Further, the inverter 27 is arranged in a posture of being tilted at an angle ⁇ (for example, 10 degrees) so that the front side is tilted downward (see FIG. 7 described later).
- ⁇ for example, 10 degrees
- a flat plate-shaped front end support portion 27a is provided at the front end portion of the inverter 27.
- the front end support portion 27a is fixed to the upper bar 11 in a state where the lower surface side thereof is in surface contact with the top surface of the upper bar 11.
- a bracket 27b is provided at the rear end portion of the inverter 27 (see FIG. 7 described later).
- the bracket 27b is formed in a shape that connects the inverter 27 and a frame member such as a side member (not shown) in the vertical direction.
- the lower end surface of the bracket 27b is fixed to the top surface of the side member, and the upper end surface of the bracket 27b is fixed to the bottom surface of the inverter 27.
- the inverter 27 is electrically connected to the generator 31 via the first harness 41, electrically connected to the motor 33 via the second harness 42, and electrically connected to the battery pack 5 via the third harness 43. Connected to.
- the first harness 41, the second harness 42, and the third harness 43 are also generally referred to as a harness group 40.
- the drive unit 7 is driven via the speed reducer 24 and the drive shaft 25 by converting the electric power stored in the battery pack 5 into a three-phase alternating current by the inverter 27 and supplying it to the motor 33 to drive it.
- the wheel 3 can be driven to travel.
- the drive unit 7 can generate electricity by the transaxle 23 when decelerating the drive wheels 3, and can generate electricity by the generator 31 by operating the engine 21. Then, the drive unit 7 can convert the electric power generated by the generator 31 and the motor 33 into a direct current by the inverter 27 and store the electric power in the battery pack 5.
- the battery pack 5 is, for example, a lithium ion battery or a nickel hydrogen battery, and is a secondary battery capable of supplying a high voltage direct current of several hundred volts.
- the battery pack 5 is arranged on the lower surface (under the floor) of the vehicle 1, the rear part of the vehicle, the vehicle interior, the luggage compartment, and the like, and is electrically connected to the motor and the generator 31 via the inverter 27.
- the battery pack 5 can supply electric power to the motor 33 and the generator 31.
- the battery pack 5 can be charged by the regenerative power of the motor 33 or the generated power of the generator 31, and can also be charged by receiving power from the outside of the vehicle (external charging).
- the electric booster 29 is an electric assist device that assists the force required when the driver of the vehicle 1 depresses the brake pedal to operate the braking device 3a provided on each wheel (driving wheel 3).
- the center C of the electric booster 29 is located behind the transaxle 23 and the inverter 27, and below the rear lower end P of the inverter 27.
- the inverter 27 is provided with a step portion 51, a DC circuit 53, an AC terminal block 55, and a DC terminal block 57. Further, a refrigerant pipe 71 through which EV cooling water as a refrigerant for cooling the inverter circuit flows is connected to the inverter 27.
- the step portion 51 is a step recessed from the front side to the left side of the substantially center in the front-rear direction on the upper right side of the inverter 27.
- the DC circuit 53 is a circuit installed internally behind the stepped portion 51 in the upper part of the inverter 27.
- the AC terminal block 55 is a terminal block arranged on the left side surface of the stepped portion 51 on the upper right side of the inverter 27.
- One end 41a of the first harness 41 and one end 42a of the second harness 42 are connected to the AC terminal block 55 so as to extend to the right from the AC terminal block 55.
- the DC terminal block 57 is a terminal block arranged on the right side of the DC circuit 53 on the upper right side of the inverter 27.
- One end 43a of the third harness 43 and one end 44a of the fourth harness 44 are connected to the DC terminal block 57 so as to extend to the right from the DC terminal block 57.
- FIG. 7 a left side view of the transaxle 23, the reduction gear 24, and the inverter 27 is shown.
- FIG. 8 a front view of the transaxle 23 and the speed reducer 24 is shown.
- a first terminal block 61 is provided at the upper end 31a of the generator 31, and a second terminal block 62 is provided at the front end 33a of the motor 33.
- the first terminal block 61 is a terminal block to which the other end 41b of the first harness 41 is electrically connected, and is configured so that the generator 31 and the inverter 27 can be energized via the first harness 41.
- the second terminal block 62 is a terminal block to which the other end 42b of the second harness 42 is electrically connected, and is configured so that the motor 33 and the inverter 27 can be energized via the second harness 42.
- the motor 33 is located on the rear side and the upper side of the generator 31, in other words, is arranged so as to be offset upward in the vertical direction. Due to the positional relationship between the generator 31 and the motor 33, a predetermined space A is formed in the transaxle 23 by the upper end 31a of the generator 31 and the front end 33a of the motor 33. That is, the first terminal block 61 and the second terminal block 62 are located in a predetermined space A.
- a third terminal block 63 to which the other end 43b of the third harness 43 is electrically connected is arranged. Further, at the right end on the front side of the engine 21, an electric air compressor 64 used for the air conditioner 9 for adjusting the temperature of the air in the vehicle interior of the vehicle 1 is disposed, and the other end 44b of the fourth harness 44 is electrically operated. It is connected to the.
- the electric air compressor 64 consumes less electric power than the generator 31 and the motor 33. Therefore, the fourth harness 44 is thinner than the first harness 41, the second harness 42, and the third harness 43.
- the first harness 41 extends to the right from the AC terminal block 55 of the inverter 27, extends downward from the right side and to the left from the left end 21b on the left side of the joint surface 23a of the engine 21, and extends from the right side to the left side of the generator 31. 1 Connect to the terminal block 61. Further, according to FIG. 5, the first harness 41 extends so that the center in the vertical direction bends rearward.
- the second harness 42 extends in the same manner as the first harness 41, in other words, extends along the rear of the first harness 41 and is connected to the second terminal block 62 of the motor 33.
- the third harness 43 extends to the right from the DC terminal block 57 of the inverter 27, extends downward along the rear of the engine 21, and then extends rearward to the third terminal block 63 of the battery pack 5. Is connected to. Further, the third harness 43 is arranged along the surface of the floor panel 15 on the front side of the vehicle. In this way, by arranging the third harness 43 connected to the battery pack 5 to the rear of the vehicle from the first harness 41 and the second harness 42, the third harness 43 is deformed at the time of the front collision of the vehicle 1. And damage are suppressed.
- the fourth harness 44 extends from the front to the right from one end 43a of the third harness 43 in the DC terminal block 57 of the inverter 27, and is a passage formed by the first harness 41, the second harness 42, and the inverter 27.
- Space) S extends and extends along the front side of the engine 21 to connect to the electric air compressor 64.
- each harness may be formed so as to keep the said posture, or may keep the said posture by using a clip or the like.
- the upstream intake passage 22b is arranged on the front side of the vehicle with respect to the harness group 40.
- the upstream intake passage 22b is arranged so as to protrude from the right side of the harness group 40 to the front of the harness group 40 in a top view, and functions to protect the harness group 40 against an external force from the front of the vehicle.
- the front of the harness group 40 is protected by the upstream intake passage 22b, and it becomes difficult for an external force at the time of a vehicle front collision to act directly on the harness group 40. Therefore, it is possible to suppress deformation and melting of the harness group 40 due to an external force, and it is possible to improve the protection of the harness group 40 against an external force.
- the refrigerant pipe 71 is connected to the front end portion and the rear end portion of the inverter 27 so that EV cooling water can flow.
- the EV cooling water flows in from the front end side of the inverter 27 and flows out from the rear end side.
- the refrigerant pipe 71 can realize a simple layout while preventing interference with the harness group 40.
- the length of the refrigerant pipe 71 can be shortened, and the pressure loss applied to the circulation of the EV cooling water can be reduced. Therefore, the cooling efficiency of the inverter 27 can be improved.
- the pipe length can be shortened and efficient pipe wiring can be realized.
- a condensation tank 73 (container) for storing EV cooling water is arranged on the rear side of the inverter 27.
- the condensation tank 73 is a device for separating air bubbles in water from EV cooling water.
- the circulation path of the EV cooling water that cools the inverter 27 is provided separately from the circulation path of the engine cooling water that cools the engine 21.
- the condensation tank 73 can act like a cushion, and the inverter 27 can be made to come into contact with the floor panel 15. Damage can be prevented. Therefore, the protection property of the inverter 27 can be improved. Further, since the harness group 40 is not arranged behind the inverter 27, the empty space in the engine room can be effectively utilized, and the vehicle 1 can be made smaller and lighter.
- the EV cooling water flowing into the inverter 27 is stored in a cooling water tank (not shown) and introduced into the inverter 27 via a pump or an EV radiator (not shown). Further, the EV cooling water that has passed through the inverter 27 cools other components (for example, a rear motor, an in-vehicle charging device, etc.) and then returns to the cooling water tank.
- FIG. 9 a perspective view of the transaxle 23, the reduction gear 24, and the inverter 27 when the transaxle 23 and the speed reducer 24 move backward is shown as viewed from the front upper right. Further, with reference to FIGS. 10 and 11, explanatory diagrams for explaining the arrangement of the devices before and after the vehicle 1 hits the obstacle 100 in front are shown. Hereinafter, the operation and effect of the drive unit 7 according to the present invention will be described with reference to FIGS. 9 to 11.
- the inverter 27 has, for example, the front end fixed to the upper bar 11 and the left end fixed to the upper side 13.
- the engine 21 and the transaxle 23 are swingably attached to the vehicle body 2 via the first mount 7a, the second mount 7b, and the third mount 7c. Therefore, the inverter 27 does not interlock even when the transaxle 23 swings, and may move relatively differently from the transaxle 23.
- a lean hosement 2a and a radiator 21c are arranged in front of the drive unit 7.
- the upper end 21d of the radiator 21c is located in front of the inverter 27.
- the lower end 21e of the radiator 21c is fixed to the suspension cross member 17 which is a skeleton member of the vehicle 1.
- the first harness 41 and the second harness 42 move to the right from one ends 41a and 42a. Since the other ends 41b and 42b are extended, the other ends 41b and 42b rotate backward around the ends 41a and 42a, and it is possible to prevent the first harness 41 and the second harness 42 from being pulled. Further, by forming the stepped portion 51 on the inverter 27 and disposing the AC terminal block 55 on the stepped portion 51, the first harness 41 and the second harness 42 are formed so as to extend to the right from one ends 41a and 42a. However, it is possible to prevent the first harness 41 and the second harness 42 from interfering with the engine 21.
- the calorific value of the transaxle 23 is smaller than that of the engine 21 that operates while burning fuel, and the space above the transaxle 23 is lower than the space above the engine 21.
- the harness group 40 is arranged not in the space above the engine 21 but in the space above the transaxle 23 arranged adjacent to the engine 21. Therefore, it is possible to suppress deformation and melting of the harness group 40 due to heat generated by the engine 21, and it is possible to improve the protection of the harness group 40 against heat. Further, since the high voltage circuit around the battery pack 5 is less likely to be exposed at the time of a vehicle collision, the safety of rescue work can be improved and the occupant protection performance can be improved.
- the layout in which the harness group 40 is pulled out from the end face in the vehicle width direction of the inverter 27 is compared with the layout in which the harness group 40 is pulled out from the back side (rear side of the vehicle) of the inverter 27, and the workability required for maintenance of the engine room is improved.
- the harness group 40 is arranged at a position (front) closer to the worker.
- the connection point between the harness group 40 and the inverter can be directly confirmed visually, and the state of the harness group 40 and the inverter 27 can be accurately grasped.
- the third harness 43 and the fourth harness 44 are harnesses for energizing a direct current. Therefore, it is necessary to convert the alternating current generated by the generator 31 and the motor 33 into direct current and then supply the alternating current to the third harness 43 and the fourth harness 44.
- each harness, etc. can be miniaturized in consideration of comprehensive consideration, and a vehicle collision can occur. Deformation and breakage of the third harness 43 at the time can be suppressed, and vehicle protection can be improved.
- the fourth harness 44 extends from the front to the right from one end 43a of the third harness 43 in the DC terminal block 57 of the inverter 27.
- one end 44a of the fourth harness 44 is located between one end 42a of the second harness 42 and one end 43a of the third harness 43. Therefore, the front and rear ends of the fourth harness 44, which is thinner than the second harness 42 and the third harness 43, are arranged so as to be sandwiched between the one end 42a of the second harness 42 and the one end 43a of the third harness 43.
- the fourth harness 44 extends between the first harness 41 and the second harness 42 and the inverter 27. Therefore, even when the engine 21 and the transaxle 23 move back and forth relative to the inverter 27 as described above, the fourth harness 44 is caused by the swing of the first harness 41 and the second harness 42. Can be suppressed from being pulled.
- the inverter 27 is arranged in a forward leaning posture in which the front side is tilted downward by an angle ⁇ , and the rear lower end P is located above the center C of the electric booster 29. Therefore, when the vehicle 1 collides with the obstacle 100 in front, the lower end P of the rear portion of the inverter 27 can move upward as it moves backward. Further, even when the rear lower end P moves upward and the inverter 27 and the electric booster 29 come into contact with each other, the rear lower end P is located above the center C of the electric booster 29, so that the inverter 27 and the electric booster 29 are electrically operated. It is possible to reduce damage to each other due to contact with the booster 29.
- the first terminal block 61 of the generator 31 and the second terminal block 62 of the motor 33 are located in a predetermined space A formed by the motor 33 located on the rear side and the upper side of the generator 31.
- the inverter 27 and the like are attached to the first terminal block 61 and the second terminal block 62. It is possible to prevent damage due to collision.
- the radiator 21c is located in front of the drive unit 7, when the vehicle 1 collides with the obstacle 100 in front, the front of the predetermined space A is covered with the radiator 21c, and the first terminal block 61 due to scattered objects or the like is covered. It is possible to suppress damage to the second terminal block 62, the other end 41b of the first harness 41, and the other end 42b of the second harness 42.
- the radiator 21c Since the lower end 21e of the radiator 21c is fixed to, that is, supported by, the front end of the suspension cross member 17, the radiator 21c is less likely to move backward when the vehicle 1 collides with the obstacle 100, and the radiator 21c is reduced. It is possible to suppress the contact between the radiator 21c and the transaxle 23, and even if the radiator 21c and the transaxle 23 come into contact with each other, the impact applied to the transaxle 23 can be reduced.
- the engine 21 arranged in the engine room 10 of the vehicle 1, the generator 31 that generates electricity by driving the engine 21, and the battery pack 5 of the vehicle 1
- a transformer axle 23 having a motor 33 driven by electric power supplied from the engine 21 and arranged on one side of the vehicle in the left-right direction of the engine 21, an inverter 27 disposed above the transformer axle 23, an inverter 27, and a generator 31.
- a vehicle drive unit including a first harness 41 that electrically connects the two harnesses 41 and a second harness 42 that electrically connects the inverter 27 and the motor 33.
- the inverter 27 is the upper end of the vehicle in the vertical direction.
- a step portion 51 formed so as to be recessed on the engine 21 side, which is one side or the other side in the vehicle left-right direction, and a first terminal block arranged in the step portion 51 and to which the first harness 41 and the second harness 42 are connected, respectively. It has 61 and a second terminal block 62.
- first harness 41 extends downward from the first terminal block 61 while extending outward on the side where the step portion 51 in the vehicle left-right direction of the inverter 27 is formed, and is connected to the upper part of the generator 31.
- the 2 harness 42 extends downward from the second terminal block 62 while extending outward on the side where the step portion 51 in the vehicle left-right direction of the inverter 27 is formed, and is connected to the upper portion of the motor 33.
- the stepped portion 51 in which the first terminal block 61 and the second terminal block 62 are arranged is formed by recessing the engine 21 side of the upper end of the inverter 27 in the vertical direction of the vehicle, the first harness 41 and the second harness are formed.
- the width of the 42 in the left-right direction of the vehicle can be narrowed. Since the first harness 41 and the second harness 42 are formed so as to bend rearward in the vehicle front-rear direction, the first harness 41 and the second harness 42 are formed when the transaxle 23 and the inverter 27 move relative to each other. The tensile force applied to the inverter can be further reduced.
- a speed reducer 24 disposed between the engine 21 and the transformer axle 23 is further provided, and the stepped portion 51 of the inverter 27 is recessed toward the engine 21 at the upper end in the vertical direction of the vehicle in a direction away from the engine 21.
- the first harness 41 is formed and extends downward from the first terminal block 61 toward the engine 21 in the left-right direction of the vehicle and is connected to the upper part of the generator 31, and the second harness 42 is connected from the second terminal block 62.
- the first harness 41 and the second harness 42 are connected to the upper part of the motor 33 while extending downward toward the engine 21 side in the vehicle left-right direction, and the first harness 41 and the second harness 42 are in the vehicle left-right direction from the joint surface 23a between the speed reducer 24 and the engine 21. It is located on the trans-axle 23 side when viewed from.
- the first harness 41 and the second harness 42 are accommodated on the transaxle 23 side when viewed from the joint surface 23a between the speed reducer 24 and the engine 21 in the left-right direction of the vehicle, the first harness 41 in the left-right direction of the vehicle 1 is accommodated. And the swing range of the second harness 42 can be narrowed. Further, since the first harness 41 and the second harness 42 extend downward from the first terminal block 61 and the second terminal block 62 toward the engine 21 in the left-right direction of the vehicle, they are connected to the generator 31 and the motor 33.
- the first harness 41 and the second harness 42 swing around the end on the inverter 27 side so that the first harness 42 and the inverter 27 move relative to each other. It is possible to prevent the tensile force from acting on the 41 and the second harness 42.
- a braking device 3a for braking the vehicle 1 and an electric booster 29 for applying a force required for operating the braking device 3a are provided, and the electric booster 29 is provided on the rear side in the vehicle front-rear direction and the upper side in the vertical direction of the transformer axle 23.
- the inverter 27 is positioned so that the lower part of the rear end in the vertical direction when viewed in the front-rear direction of the vehicle is tilted forward so as to be located above the center of the electric booster 29 in the vertical direction and in the front side in the front-rear direction. It is possible to suppress the contact between the inverter 27 and the electric booster 29 when 1 collides forward, and to reduce the impact applied to the electric booster 29 even if the inverter 27 and the electric booster 29 come into contact with each other.
- a compressor 64 and a fourth harness 44 that electrically connects the inverter 27 and the electric air compressor 64 are provided, and the inverter 27 includes a first terminal block 61 and a second terminal block 62 arranged in a step portion 51.
- a third terminal block 63 and a fourth terminal block 64, to which the third harness 43 and the fourth harness 44 are connected, are arranged further rearward, and the third harness 43 and the fourth harness 44 are the third, respectively. It is attached so as to extend from the terminal block 63 and the fourth terminal block 64 toward one side in the left-right direction of the vehicle.
- the inverter 27 since the first terminal block 61 and the second terminal block 62, that is, the AC terminal block 55 and the third terminal block 63 and the fourth terminal block 64, that is, the DC terminal block 57 are arranged side by side in the inverter 27, the inverter 27 is arranged.
- the size of the 27 and the first harness 41, the second harness 42, the third harness 43, and the fourth harness 44 can be reduced in consideration of comprehensively.
- the electric air compressor 64 is arranged on the engine 21 side of the third terminal block 63 and the fourth terminal block 64 when viewed from the front side of the engine 21 in the front-rear direction and the left-right direction of the vehicle, and the fourth harness 44 is the vehicle.
- the first harness 41 and the second harness 42 bend rearward in the front-rear direction of the vehicle and extend through the passage S formed between the first harness 41 and the second harness 42, and thus extend through the passage S formed between the first harness 41 and the second harness 42.
- the fourth harness 44 can extend on the trans-axle 23 side in the range where the harness 42 bends toward the engine 21, for example, the engine 21, the trans-axle 23, and the speed reducer 24 move relative to the inverter 27. Even in such a case, the first harness 41 and the second harness 42 can prevent the fourth harness 44 from swinging more than expected.
- the present invention is not limited to the above embodiment and can be changed without departing from the gist of the present invention.
- the motor 33 is located on the rear side and the upper side of the generator 31, but the positions of the generator 31 and the motor 33 are reversed, in other words, the generator 31 is located on the rear side and the upper side of the motor 33. It may be positioned on the upper side.
- the speed reducer 24 is used, but a transmission capable of adjusting the degree of deceleration may be used.
- the first harness 41 and the second harness 42 are bent backward in the front-rear direction of the vehicle, but they may be bent forward, and may be appropriately changed depending on the positional relationship of each device or the like. You may do it.
- the vehicle drive unit is supplied from an internal combustion engine arranged in the engine room of the vehicle, a first electric motor that generates electricity by driving the internal combustion engine, and a traveling battery of the vehicle.
- An electric unit having a second electric motor driven by the electric power and arranged in one of the vehicle left and right directions of the internal combustion engine, an inverter arranged above the electric unit, and the inverter and the first electric motor.
- a vehicle drive unit including a first harness that electrically connects the inverter and a second harness that electrically connects the inverter and the second motor, and the inverter is a vehicle at the upper end of the vehicle in the vertical direction.
- a stepped portion formed so as to be recessed on one side or the other side in the left-right direction, and a first terminal block and a second terminal block arranged on the stepped portion and to which the first harness and the second harness are connected, respectively.
- the first harness extends downward from the first terminal block toward the outside of the inverter in the left-right direction of the vehicle on the side where the step portion is formed, and extends downward to the upper portion of the first motor.
- the second harness is connected and extends downward while extending outward from the second terminal block on the side where the step portion in the vehicle left-right direction of the inverter is formed, and is connected to the upper portion of the second motor. Will be done.
- the stepped portion on which the first terminal block and the second terminal block are arranged is formed so as to dent one side or the other side in the vehicle left-right direction at the upper end of the vehicle in the vertical direction of the inverter. Therefore, the widths of the first harness and the second harness in the vehicle left-right direction can be narrowed.
- the first harness and the second harness can be bent forward or backward in the vehicle front-rear direction.
- the first harness and the second harness are bent forward or backward so that the electric unit and the inverter move relative to each other.
- the tensile force applied to the inverter can be reduced.
- the vehicle drive unit further includes a transmission disposed between the internal combustion engine and the electric unit, and the step portion of the inverter is the upper end of the vehicle in the vertical direction.
- the first harness is formed on the internal combustion engine side so as to be recessed in a direction away from the internal combustion engine, and the first harness extends downward while extending from the first terminal block toward the internal combustion engine side in the left-right direction of the vehicle.
- the second harness is connected to the upper part of the electric motor, extends downward from the second terminal block toward the internal combustion engine side in the left-right direction of the vehicle, and is connected to the upper part of the second electric motor.
- the second harness can be located on the electric unit side when viewed in the left-right direction of the vehicle from the joint between the transmission and the internal combustion engine.
- the first harness and the second harness are housed on the electric unit side when viewed from the joint portion between the transmission and the internal combustion engine in the vehicle left-right direction, so that the first harness and the second harness are housed in the vehicle left-right direction.
- the swing range of the 1st harness and the 2nd harness can be narrowed.
- the first harness and the second harness extend downward from the first terminal block and the second terminal block toward the internal combustion engine side in the left-right direction of the vehicle and are connected to the first electric motor and the second electric motor. Even when the electric unit and the inverter move relatively, the first harness and the second harness swing around the end on the inverter side to prevent the tensile force from acting. be able to.
- the vehicle drive unit includes a braking device that brakes the vehicle and a braking force adding device that applies a force required for operating the braking device.
- the electric unit is located on the rear side in the vehicle front-rear direction and the upper side in the vertical direction, and the lower part in the vertical direction at the rear end of the inverter when viewed in the vehicle front-rear direction is above and front and rear from the center of the braking force addition device in the vehicle vertical direction. It can be arranged so as to be tilted forward so as to be located on the front side in the direction.
- the vehicle is moved forward by arranging the inverter tilted forward so that the lower portion of the rear end of the inverter is located above and on the front side of the center of the braking force applying device in the vertical direction. It is possible to suppress the contact between the inverter and the braking force adding device at the time of collision, and to reduce the impact applied to the braking force adding device even if the inverter and the braking force adding device come into contact with each other.
- the vehicle drive unit is disposed in the engine room and a third harness that electrically connects the inverter and the traveling battery, and is air in the vehicle interior of the vehicle.
- the inverter is provided with an electric air compressor used for an air conditioner for adjusting the temperature of the above and a fourth harness for electrically connecting the inverter and the electric air compressor, and the inverter is arranged in the step portion.
- a third terminal block and a fourth terminal block, which are connected to the third harness and the fourth harness, respectively, are arranged behind the first terminal block and the second terminal block, and the third harness and the fourth harness are arranged.
- the fourth harness can be attached so as to extend from the third terminal block and the fourth terminal block toward one side in the left-right direction of the vehicle, respectively.
- the inverter and the first harness and the second harness are arranged by arranging the first terminal block, the second terminal block, the third terminal block, and the fourth terminal block side by side on the inverter.
- the third harness and the fourth harness can be miniaturized in consideration of comprehensive consideration.
- the electric air compressor is the internal combustion engine from the third terminal block and the fourth terminal block when viewed in the front-rear direction and the vehicle left-right direction of the internal combustion engine.
- the fourth harness is arranged on the side, and the first harness and the second harness are bent rearward in the front-rear direction of the vehicle when viewed in the vertical direction of the vehicle, and pass through a space formed between the first harness and the inverter. It can be extended.
- the fourth harness is configured so that the first harness and the second harness bend backward in the front-rear direction of the vehicle so as to pass through the space formed between the first harness and the inverter when viewed in the vertical direction of the vehicle.
- the vehicle drive unit according to the seventh embodiment of the present invention can be provided with a refrigerant pipe connected to each of the front end portion and the rear end portion of the inverter and through which a refrigerant for cooling the inverter flows.
- the refrigerant pipes interfere with the first harness and the second harness by connecting the refrigerant pipes through which the refrigerant for cooling the inverter flows to the front end portion and the rear end portion of the inverter. It can be prevented from doing so.
- the vehicle drive unit according to the eighth embodiment of the present invention can be arranged on the rear side of the vehicle side by side with the inverter in the vehicle length direction, and can include a container for storing liquid.
- the container for storing the liquid behind the inverter 27 the container can act like a cushion and the inverter can be prevented from being damaged.
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Abstract
Description
このようなハイブリット車両のエンジンルーム内には、モータやエンジン、該エンジンが稼働することによって発生する駆動力を電気エネルギに変換するジェネレータ及び交流、直流の変換をするインバータ等、複数の装置(駆動ユニット)が配設されている。また、インバータは、ジェネレータ及びモータと三相交流ハーネスによって電気的に接続されている。この三相交流ハーネスは、車両左右方向に撓むように配設されている(特許文献1)。
図1を参照すると、車両1の概略斜視図が示されている。
車両1は、車両1、駆動輪3、バッテリパック(走行用バッテリ)5及び駆動ユニット7を備えた所謂ハイブリット車両である。この車両は、車体2の車両前後方向中央下側に配設されたバッテリパック5から電力を供給された駆動ユニット7が駆動力を発生させることで駆動輪3を駆動して走行することが可能に構成されている。
以下、各装置等について詳しく説明する。なお、説明の便宜上、車両前後方向前方及び後方を単に前方または後方といい、車両左右方向左方及び右方を単に左方または右方といい、車両上下方向上方及び下方を単に上方または下方ともいう。
図2及び図3を参照すると、エンジンルーム10の上面図が示されており、図4を参照すると、エンジンルーム10の前面図が示されている。
駆動ユニット7は、エンジン(内燃機関)21、トランスアクスル(電動ユニット)23、減速機(変速機)24、ドライブシャフト25、インバータ27及び電動ブースタ(制動力付加装置)29を備えている。この駆動ユニット7のうち、エンジン21及びトランスアクスル23は、例えばエンジン21の上端右側に設けられた第1マウント7a、トランスアクスル23の上端左側に設けられた第2マウント7b及びエンジン21の下端後側に設けられた第3マウント7cを介して車体2に揺動可能に取り付けられている。エンジン21は、図示しない燃料タンクに貯留される燃料を燃焼して稼働する内燃機関である。このエンジン21は、稼働することでアウトプットシャフト21a(後述する図5参照)を駆動させることが可能である。トランスアクスル23は、エンジン21の左側の接合面(接合部)23aに固定された電動ユニットであり、ジェネレータ(第1電動機)31及びモータ(第2電動機)33を有している。
直流用回路53は、インバータ27の上部における段差部51より後側に内設される回路である。
交流端子台55は、インバータ27の上部右側の段差部51の左側面に配設される端子台である。この交流端子台55には、第1ハーネス41の一端41a及び第2ハーネス42の一端42aが交流端子台55から右方に延びるように接続される。
図7を参照すると、トランスアクスル23、減速機24及びインバータ27の左側面図が示されている。また、図8を参照すると、トランスアクスル23及び減速機24の前面図が示されている。ジェネレータ31の上端31aには第1端子台61が、モータ33の前端33aには第2端子台62が、それぞれ設けられている。第1端子台61は、第1ハーネス41の他端41bが電気的に接続される端子台であり、ジェネレータ31とインバータ27とで第1ハーネス41を介して通電可能に構成されている。第2端子台62は、第2ハーネス42の他端42bが電気的に接続される端子台であり、モータ33とインバータ27とで第2ハーネス42を介して通電可能に構成されている。
第3ハーネス43及び第4ハーネス44は、直流電流を通電させるハーネスである。したがって、ジェネレータ31やモータ33によって発電された交流電流を直流に変換してから第3ハーネス43及び第4ハーネス44に供給する必要がある。ゆえに、インバータ27における直流端子台57の後側に直流用回路53を配設することで段差部51を形成し、インバータ27、各ハーネス等を総合的に鑑みて小型化することや、車両衝突時における第3ハーネス43の変形や破損を抑制することができ、車両保護性を向上させることができる。
そして、第1ハーネス41及び第2ハーネス42は、車両前後方向後方に撓むように形成したので、トランスアクスル23とインバータ27とが相対的に移動するような場合に第1ハーネス41及び第2ハーネス42に加わる引張力をより低減することができる。
そして、電動エアコンプレッサ64は、エンジン21の前後方向前側かつ車両左右方向で視て第3端子台63及び第4端子台64よりエンジン21側に配設されており、第4ハーネス44は、車両上下方向で視て第1ハーネス41及び第2ハーネス42が車両前後方向後方に撓んでインバータ27との間に形成された通路Sを通って延びるので、通路S、すなわち第1ハーネス41及び第2ハーネス42がエンジン21側に撓む範囲のトランスアクスル23側を第4ハーネス44が延びるようにすることができ、例えばエンジン21、トランスアクスル23及び減速機24がインバータ27に対して相対的に移動するような場合であっても、第1ハーネス41及び第2ハーネス42により第4ハーネス44が想定以上に揺動することを抑制することができる。
例えば、本実施形態では、モータ33をジェネレータ31の後側かつ上側に位置させるようにしたが、ジェネレータ31とモータ33との位置を逆にする、換言すると、ジェネレータ31をモータ33の後側かつ上側に位置させるようにしてもよい。
また、本実施形態では、第1ハーネス41及び第2ハーネス42を車両前後方向後方に撓ませるようにしたが、前方に撓ませるようにしてもよく、各装置等の位置関係から適宜変更するようにしてもよい。
本発明の第8実施態様においては、液体を貯留する容器をインバータ27の後方に配置しておくことで、該容器をクッションのように作用させ、インバータの破損を防止することができる。
3a 制動装置
5 バッテリパック(走行用バッテリ)
9 空調装置
10 エンジンルーム
21 エンジン(内燃機関)
23 トランスアクスル(電動ユニット)
23a 接合面(接合部)
24 減速機(変速機)
27 インバータ
29 電動ブースタ(制動力付加装置)
31 ジェネレータ(第1電動機)
33 モータ(第2電動機)
41 第1ハーネス
42 第2ハーネス
43 第3ハーネス
44 第4ハーネス
51 段差部
61 第1端子台
62 第2端子台
64 電動エアコンプレッサ
71 冷媒配管
73 コンデンスタンク(容器)
S 通路(空間)
Claims (8)
- 車両のエンジンルーム内に配設される内燃機関と、
前記内燃機関の駆動により発電する第1電動機及び前記車両の走行用バッテリから供給される電力により駆動する第2電動機を有し、前記内燃機関の車両左右方向一方に配設される電動ユニットと、
前記電動ユニットの上方に配設されるインバータと、
前記インバータと前記第1電動機とを電気的に接続する第1ハーネスと、
前記インバータと前記第2電動機とを電気的に接続する第2ハーネスと、を備える車両の駆動ユニットであって、
前記インバータは、車両上下方向上端の車両左右方向一方側または他方側に凹むよう形成される段差部と、
前記段差部に配設され、前記第1ハーネス及び前記第2ハーネスがそれぞれ接続される第1端子台及び第2端子台と、を有し、
前記第1ハーネスは、前記第1端子台から前記インバータにおける車両左右方向の前記段差部が形成される側の外方に向かって延びつつ下方に延びて前記第1電動機の上部に接続され、
前記第2ハーネスは、前記第2端子台から前記インバータにおける車両左右方向の前記段差部が形成される側の外方に向かって延びつつ下方に延びて前記第2電動機の上部に接続される車両の駆動ユニット。 - 前記第1ハーネス及び前記第2ハーネスは、車両前後方向前方または後方に撓んでなる、請求項1に記載の車両の駆動ユニット。
- 前記内燃機関と前記電動ユニットとの間に配設される変速機をさらに備え、
前記インバータの前記段差部は、車両上下方向上端の前記内燃機関側に、該内燃機関から離間する方向に凹むよう形成され、
前記第1ハーネスは、前記第1端子台から車両左右方向の前記内燃機関に向かって延びつつ下方に延びて前記第1電動機の上部に接続され、
前記第2ハーネスは、前記第2端子台から車両左右方向の前記内燃機関に向かって延びつつ下方に延びて前記第2電動機の上部に接続され、
前記第1ハーネス及び前記第2ハーネスは、前記変速機と前記内燃機関との接合部より車両左右方向で視て前記電動ユニット側に位置する、請求項1または2に記載の車両の駆動ユニット。 - 前記車両を制動させる制動装置と、
前記制動装置の作動に要する力を付加する制動力付加装置と、を備え、
前記制動力付加装置は、前記電動ユニットの車両前後方向後側及び上下方向上側に位置し、
前記インバータは、車両前後方向で視て後端の上下方向下部が、前記制動力付加装置の車両上下方向中央より上側及び前後方向前側に位置するよう前傾して配設される、請求項1~3のいずれか一項に記載の車両の駆動ユニット。 - 前記インバータと前記走行用バッテリとを電気的に接続する第3ハーネスと、
前記エンジンルーム内に配設され、前記車両の車室内の空気の温度を調整する空調装置に用いられる電動エアコンプレッサと、
前記インバータと前記電動エアコンプレッサとを電気的に接続する第4ハーネスと、を備え、
前記インバータは、前記段差部に配設された前記第1端子台及び前記第2端子台より後方に前記第3ハーネスと前記第4ハーネスとがそれぞれ接続される第3端子台及び第4端子台が配設されており、
前記第3ハーネス及び前記第4ハーネスは、それぞれ前記第3端子台及び前記第4端子台から車両左右方向一方側に向かって延びるよう取り付けられてなる、請求項1~4のいずれか一項に記載の車両の駆動ユニット。 - 前記電動エアコンプレッサは、前記内燃機関の前後方向前側かつ車両左右方向で視て前記第3端子台及び前記第4端子台より前記内燃機関側に配設されており、
前記第4ハーネスは、車両上下方向で視て前記第1ハーネス及び前記第2ハーネスが車両前後方向後方に撓んで前記インバータとの間に形成された空間を通って延びる、請求項2を引用する請求項5に記載の車両の駆動ユニット。 - 前記インバータの前端部及び後端部の各々に接続され、前記インバータを冷却する冷媒が流通する冷媒配管を備える、請求項1~6のいずれか一項に記載の車両の駆動ユニット。
- 前記インバータと車長方向に並んで車両後方側に配置され、液体を貯留する容器を備える、請求項1~7のいずれか一項に記載の車両の駆動ユニット。
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| US17/761,835 US12077049B2 (en) | 2019-12-06 | 2020-11-09 | Vehicle drive unit |
| EP20896984.0A EP4070979B1 (en) | 2019-12-06 | 2020-11-09 | Vehicle drive unit |
| JP2021562522A JP7295505B2 (ja) | 2019-12-06 | 2020-11-09 | 車両の駆動ユニット |
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| JP2023092614A (ja) * | 2021-12-22 | 2023-07-04 | マツダ株式会社 | 電動車両 |
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- 2020-11-09 US US17/761,937 patent/US11912133B2/en active Active
- 2020-11-09 EP EP20897169.7A patent/EP4070980B1/en active Active
- 2020-11-09 WO PCT/JP2020/041651 patent/WO2021111809A1/ja not_active Ceased
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| JP2012196986A (ja) * | 2011-03-18 | 2012-10-18 | Suzuki Motor Corp | 電動車両の高圧ケーブル配索構造 |
| JP2013147046A (ja) | 2012-01-17 | 2013-08-01 | Nissan Motor Co Ltd | ハイブリッド車両のパワートレーン系要素配置構造 |
| JP2013237413A (ja) * | 2012-05-17 | 2013-11-28 | Mitsubishi Motors Corp | インバータカバー |
| WO2019008678A1 (ja) * | 2017-07-04 | 2019-01-10 | 日産自動車株式会社 | 電動車両用電力変換装置 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023092614A (ja) * | 2021-12-22 | 2023-07-04 | マツダ株式会社 | 電動車両 |
| JP7786191B2 (ja) | 2021-12-22 | 2025-12-16 | マツダ株式会社 | 電動車両 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4070979A1 (en) | 2022-10-12 |
| JP7295504B2 (ja) | 2023-06-21 |
| CN114728569B (zh) | 2025-03-25 |
| CN114728622B (zh) | 2025-09-19 |
| US12077049B2 (en) | 2024-09-03 |
| EP4070980B1 (en) | 2023-10-11 |
| EP4070980A1 (en) | 2022-10-12 |
| WO2021111809A1 (ja) | 2021-06-10 |
| JP7295505B2 (ja) | 2023-06-21 |
| EP4070980A4 (en) | 2023-01-25 |
| JPWO2021111809A1 (ja) | 2021-06-10 |
| US20220371529A1 (en) | 2022-11-24 |
| US11912133B2 (en) | 2024-02-27 |
| EP4070979A4 (en) | 2023-07-12 |
| CN114728622A (zh) | 2022-07-08 |
| EP4070979B1 (en) | 2024-05-22 |
| JPWO2021111810A1 (ja) | 2021-06-10 |
| CN114728569A (zh) | 2022-07-08 |
| US20220324315A1 (en) | 2022-10-13 |
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