WO2023161996A1

WO2023161996A1 - Saddled vehicle

Info

Publication number: WO2023161996A1
Application number: PCT/JP2022/007240
Authority: WO
Inventors: 穣辻; 尚史松尾; 康弘福吉; 将之福田; 正明川▲崎▼
Original assignee: 本田技研工業株式会社
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2023-08-31

Abstract

This saddled vehicle comprises a drive motor (M1), a second motor (M2), a control device (34), a battery (37), and an internal combustion engine (E). A crankshaft (26) provided in the internal combustion engine (E), a first rotation shaft (151) provided in the drive motor (M1), and a second rotation shaft (251) provided in the second motor (M2) are disposed in parallel with each other in the axial direction. As viewed in the axial direction, an axial center (C1) of the crankshaft (26), an axial center (C3) of the first rotation shaft (151), and an axial center (C4) of the second rotation shaft (251) are disposed in a triangular shape having these as vertices, and a gravity center (G2) of the battery (37), a gravity center (G1) of the control device (34), and the axial center (C4) of the second rotation shaft (251) are disposed in an inverted triangular shape having these as vertices.

Description

saddle-riding vehicle

The present invention relates to a saddle-ride type vehicle.

For example, Patent Document 1 discloses a series hybrid straddle-type vehicle having power components such as an engine, a generator, a battery, a drive motor, and a control unit.

JP 2020-175822 A

By the way, in a hybrid straddle-type vehicle, many heavy objects such as an engine, a drive motor, and a generator motor are mounted. ing.

An object of the present invention is therefore to optimize the weight balance of the power unit and achieve a compact layout in a saddle-riding vehicle equipped with an engine, a drive motor, and a generator motor.

As means for solving the above problems, a first aspect of the present invention provides a drive motor (M1) that applies a driving force to a drive wheel (4), and a second motor (M2) that is provided separately from the drive motor (M1). a controller (34) for controlling the drive motor (M1) and the second motor (M2); a battery (37) for supplying power to the drive motor (M1); and the second motor (M2). An internal combustion engine (E) that drives and generates power, the crankshaft (26) of the internal combustion engine (E), the first rotation shaft (151) of the drive motor (M1), and the second The second rotation shaft (251) of the motor (M2) is arranged in parallel with each other in the axial direction, and when viewed from the axial direction, the axis (C1) of the crankshaft (26) and the first rotation shaft (251) The axis (C3) of the shaft (151) and the axis (C4) of the second rotating shaft (251) are arranged side by side in a triangular shape with these as vertices, and the center of gravity (G2) of the battery (37). , the center of gravity (G1) of the control device (34), and the center of gravity (C4) of the second rotating shaft (251) are arranged side by side in an inverted triangle with these as vertices. do.
According to this configuration, the drive motor, the second motor, and the internal combustion engine, which are heavy objects, can be arranged close to each other (concentrated) in a triangular shape. In addition, the control device, the battery, and the second motor, which are also heavy objects, can be placed close to each other (concentrated) in an inverted triangle shape. Therefore, mass concentration of these drive system components can be achieved. In addition, by arranging the internal combustion engine, the drive motor, the battery, and the control device vertically with the second motor for power generation as a boundary, the weight balance of the drive system components can be improved.

A second aspect of the present invention includes a drive motor (M1) that applies a driving force to a drive wheel (4), a second motor (M2) provided separately from the drive motor (M1), and the drive motor (M1 ) and the second motor (M2), a battery (37) for supplying electric power to the driving motor (M1), and an internal combustion engine for driving the second motor (M2) to generate electricity. (E), wherein the crankshaft (26) of the internal combustion engine (E), the first rotation shaft (151) of the drive motor (M1), and the second motor (M2) of the The two rotating shafts (251) are arranged axially parallel to each other, and the crankshaft (26) and the first rotating shaft (151) are arranged below the second rotating shaft (251). and arranged in the front and rear of the second rotation shaft (251) in the longitudinal direction of the vehicle, and the battery (37) and the control device (34) are arranged above the second rotation shaft (251). To provide a saddle-riding type vehicle that is arranged and distributed to the front and rear of the second rotating shaft (251) in the longitudinal direction of the vehicle.
According to this configuration, the heavy internal combustion engine, the drive motor, the battery, and the control device are arranged while shifting their positions in the vertical direction and the front-rear direction around the second motor for power generation. System components can be placed closer together (aggregated). Therefore, the mass of the drive system components can be concentrated, and the weight balance of the drive system components can be improved.

In the above aspect, a wiring (39) connecting the control device (34) and the battery (37) may be provided, and the wiring (39) may be arranged to extend in the longitudinal direction of the vehicle.
According to this configuration, the wiring between the control device and the battery extends linearly in the vehicle front-rear direction, so the burden on the wiring can be reduced as compared with the case where the wiring is bent. Also, the length of wiring can be shortened to reduce weight and cost.

In the above aspect, the crankshaft (26), the first rotating shaft (151), and the second rotating shaft (251) may be arranged with the axial direction along the vehicle width direction. good.
According to this configuration, the drive motor, the second motor, and the internal combustion engine can be arranged close to each other when viewed from the side in the vehicle width direction, so that the mass can be concentrated and arranged compactly in the longitudinal and vertical directions. be able to.

In the above aspect, a first transmission mechanism (56) connecting the drive motor (M1) and the drive wheels (4), and a second transmission mechanism (56) connecting the internal combustion engine (E) and the second motor (M2) a transmission mechanism (156), wherein the drive motor (M1) and the first transmission mechanism (56) are offset to one side in the vehicle width direction, and the second motor (M2) and the second The transmission mechanism (156) may be arranged offset to the other side in the vehicle width direction.
According to this configuration, the drive motor and the second motor are distributed and arranged in the vehicle width direction, and the first transmission mechanism and the second transmission mechanism are also distributed and arranged on the same side as the corresponding motors in the vehicle width direction. Thus, these drive system components can be arranged in a well-balanced manner in the vehicle width direction.

In the above aspect, the crankshaft (26) is arranged on one side in the vehicle front-rear direction of the second rotating shaft (251), and the battery (37) and the control device (34) are connected to the second rotating shaft (251). A one-side drive system component (34) is positioned on one side in the vehicle front-rear direction of the rotating shaft (251), and the center of gravity (G1) of the one-side drive system component (34) when viewed from the axial direction. and the axial center (C4) of the second rotating shaft (251) in the longitudinal direction of the vehicle is defined as a first distance (L1), the axial center (C1) of the crankshaft (26) and the second rotating shaft Assuming that the distance in the longitudinal direction of the vehicle between (251) and the axis (C4) is a second distance (L2), the first distance (L1) is set longer than the second distance (L2). It may be a configuration with
According to this configuration, among the one-side drive system components and the crankshaft (and thus the internal combustion engine) positioned on one side in the longitudinal direction of the vehicle, the one-side drive system components are arranged farther away, so that the The one-side drive system components do not have to be arranged, and can be efficiently arranged by being shifted back and forth, and heat from the internal combustion engine is less likely to be transmitted to the one-side drive system components.

In the above aspect, the first rotating shaft (151) is arranged on the other side in the vehicle front-rear direction of the second rotating shaft (251), and the battery (37) and the control device (34) include the The other side drive system component (37) is positioned on the other side in the vehicle longitudinal direction of the second rotating shaft (251), and the center of gravity (37) of the other side drive system component (37) when viewed from the axial direction G2) and the axial center (C4) of the second rotating shaft (251) in the longitudinal direction of the vehicle are defined as a third distance (L3), and the axial center (C3) of the first rotating shaft (151) and the aforementioned Assuming that a fourth distance (L4) is the distance in the longitudinal direction of the vehicle between the axis (C4) of the second rotating shaft (251), the third distance (L3) is longer than the fourth distance (L4). A long configuration may also be used.
According to this configuration, among the other-side drive system components and the first rotating shaft (and thus the drive motor) located on the other side in the vehicle front-rear direction, the other-side drive system components are arranged farther away from each other so that the drive motor is closer to the vehicle. It is not necessary to arrange the other-side drive system parts on top, and these can be efficiently arranged by shifting them back and forth.

In the above aspect, the battery (37) may be detachable from the vehicle body and may be arranged behind the second motor (M2).
According to this configuration, by arranging the detachable battery in the rear portion of the vehicle body, the battery can be accessed from the upper portion, the rear portion, or both the left and right sides of the rear portion of the vehicle body, and the attachment and detachment of the battery can be facilitated.

In the above aspect, the battery (37) may be arranged above the second motor (M2) and below the seat (21) on which the passenger sits.
According to this configuration, the battery can be accessed by opening and closing the seat, and the attachment and detachment of the battery can be further facilitated.

According to the present invention, in a saddle type vehicle equipped with an engine, a drive motor, and a generator motor, it is possible to optimize the weight balance of the power unit and achieve a compact layout.

1 is a left side view schematically showing a motorcycle according to an embodiment of the invention; FIG. 2 is a configuration diagram showing an outline of a drive system of the motorcycle; FIG. FIG. 3 is a configuration diagram corresponding to FIG. 2 showing an EV mode of the drive system; FIG. 3 is a configuration diagram corresponding to FIG. 2 showing a hybrid mode of the drive system; FIG. 3 is a configuration diagram corresponding to FIG. 2 showing a regeneration mode of the drive system; FIG. 3 is a configuration diagram corresponding to FIG. 2 showing an engine drive mode of the drive system; It is a block diagram which shows the outline of the control part of the said drive system. Fig. 2 is a plan view showing the outline of the motorcycle; It is a left side view showing the outline of the motorcycle of the reference example of the above-mentioned embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the directions such as front, back, left, and right in the following description are the same as the directions of the vehicle described below unless otherwise specified. An arrow FR indicating the front of the vehicle, an arrow LH indicating the left of the vehicle, an arrow UP indicating the upper side of the vehicle, and a line CL indicating the left-right center of the vehicle are shown at appropriate locations in the drawings used in the following description. The term "intermediate" used in this embodiment is intended to include not only the center between the two ends of the target, but also the inner range between the two ends of the target.

<Whole vehicle>
FIG. 1 shows a motorcycle 1 as an example of a straddle-type vehicle according to the present embodiment. The motorcycle 1 comprises a drive system S including an engine (internal combustion engine) E and two electric motors M1 and M2, and runs by cooperating engine power and motor power. The motorcycle 1 is a hybrid vehicle equipped with a so-called two-motor hybrid system. It should be noted that the present invention may be applied to a one-motor hybrid vehicle or an electric vehicle that does not have an internal combustion engine, as long as it does not depart from the gist of the present invention described below.

The motorcycle 1 includes front wheels (steered wheels) 3 that are steered by a steering wheel 2 and rear wheels (driving wheels) 4 that are driven by a drive system S. The motorcycle 1 is a saddle type vehicle in which the rider straddles the vehicle body, and the vehicle body can be swung (banked) in the lateral direction (roll direction) with reference to ground contact points of the front and

rear wheels

3 and 4 . The handle 2 may be a left and right integrated bar handle or a left and right separate separate handle, and may not be a bar type handle.

The motorcycle 1 includes a vehicle body frame 5 that serves as a main frame of the vehicle body. The body frame 5 includes a head pipe 6, a main frame 7, a pivot frame 8 and a rear frame 9.
The vehicle body frame 5 steerably supports a front fork 12 of a front wheel suspension 11 at a head pipe 6 positioned in the center of the front end portion in the left-right direction. The vehicle body frame 5 supports a swing arm 16 of a rear wheel suspension device 15 in a pivot frame 8 positioned in the front-rear intermediate portion so as to be capable of swinging up and down. The vehicle body frame 5 is integrally provided from the head pipe 6 to the rear frame 9 behind the pivot frame 8 by a joining means such as welding. A part of the vehicle body frame 5 (for example, the rear frame 9 and the like) may be detachable by bolting or the like. Reference numeral 9a in the drawing denotes a pair of left and right rear frame members provided in the rear frame 9. As shown in FIG.

The head pipe 6 has a steering axis (rotational axis) tilted backward with respect to the vertical direction. The head pipe 6 supports the front wheel 3 and the front wheel suspension device 11 so as to be rotatable about the steering axis. For example, the front wheel suspension system 11 includes a pair of left and right front forks 12 . Upper portions of the left and right front forks 12 are supported by the head pipe 6 via a steering stem. Lower ends of the left and right front forks 12 support the axle 3 a of the front wheel 3 . The left and right front forks 12 are of a telescopic type, respectively, and constitute a front suspension of the motorcycle 1 . The front wheel suspension 11 is not limited to constituting a telescopic front suspension, and may constitute, for example, a link-type front suspension.

The pivot frame 8 supports the front end of the swing arm 16 via a pivot shaft (swing shaft) 17 extending in the vehicle width direction. A rear end portion of the swing arm 16 supports an axle 4 a of the rear wheel 4 . For example, a rear cushion is interposed between the front portion of the swing arm 16 and the front-rear middle portion of the body frame 5 (for example, the cross frame near the pivot frame 8). The swing arm 16 and the rear cushion constitute a rear suspension of the motorcycle 1. As shown in FIG. The rear cushion may be interposed between the rear portion of the swing arm 16 and the rear portion of the body frame 5 (for example, the rear frame 9).
The entire vehicle body including the vehicle body frame 5 is covered with a vehicle body cover 19 . The vehicle body cover 19 is divided into, for example, a front body cover 19a that covers the front part of the vehicle body and a rear body cover 19b that covers the rear part of the vehicle body, with the front-rear center of the vehicle body as a boundary.

The rear frame 9 extends rearward and upward of the pivot frame 8 . A seat 21 for seating an occupant is supported on the rear frame 9 . The rear frame 9 supports the seating load of an occupant seated on the seat 21 . When the rear cushion is connected, the rear frame 9 receives a reaction force when the cushion expands and contracts.
The seat 21 integrally includes a front seating portion on which a driver sits and a rear seating portion on which a rear passenger sits. The periphery of the rear frame 9 is covered with a rear body cover 19b extending from below both sides of the seat 21 to the rear.

The seat 21 is attached to, for example, the rear body cover 19b in a detachable or openable manner. By attaching/detaching or opening/closing the seat 21, the upper part of the rear body cover 19b is opened/closed. An occupant can sit on the seat 21 in the closed state in which the seat 21 is attached and the upper portion of the rear body cover 19b is closed. When the seat 21 is removed and the upper portion of the rear body cover 19b is opened, parts and spaces below the seat 21 can be accessed. The seat 21 is lockable in the closed state. For example, the seat 21 may be configured to rotate around a hinge shaft provided at either the front or rear to open and close the upper portion of the rear body cover 19b.

A vehicle component 23 having a knee grip portion is supported in front of the seat 21 and above the main frame 7 . The vehicle component parts 23 include, for example, existing vehicle component parts such as a fuel tank and air cleaner for the engine E, a 12V battery for auxiliary equipment, and an article storage section for loading and unloading luggage by the occupant. and PCU 34 may be included.
The present invention may be applied to a scooter-type vehicle in which a straddle space is formed in front of the seat 21 without any vehicle components.

<Drive system>
FIG. 2 is a block diagram showing the configuration of the drive system S. As shown in FIG.
The drive system S includes an engine E, a first motor M1, a second motor M2, a power switching device 31, a PCU 34, and a battery 37.

The engine E is, for example, a multi-cylinder engine, and generates rotational driving force for the crankshaft 26 from the reciprocating motion of the piston of each cylinder.
Referring also to FIG. 1, the engine E is arranged with the rotation center axis (axis) C1 of the crankshaft 26 along the vehicle width direction (horizontal direction). The crankshaft 26 is housed inside a crankcase 27 . A cylinder block 28 protrudes from the crankcase 27, and a piston corresponding to each cylinder is fitted in the cylinder block 28. As shown in FIG. Each piston is connected to the crankshaft 26 via a connecting rod.

In this embodiment, the first motor M1 is arranged behind the engine E, and the second motor M2 is arranged above and behind the engine E. The first motor M1 and the second motor M2 are each brushless three-phase AC motors. The first motor M1 is a driving motor that generates rotational driving force for driving the rear wheels, and regenerates (generates power) when the vehicle decelerates. The second motor M2 is a power generating motor that receives the driving force of the engine E to generate power, and performs at least one of charging the battery 37 and supplying power to the first motor M1.

When the first motor M1 drives the rear wheels 4 and causes the motorcycle 1 to travel, variable speed driving is performed by, for example, VVVF (variable voltage variable frequency) control. The first motor M1 is speed-change controlled to have a continuously variable transmission, but is not limited to this, and may be speed-change controlled to have a stepped transmission. The operation of the first motor M1 may include driving as an assist motor that assists the driving of the engine E. Operation of the first motor M1 may include driving the engine E as a starter motor.

When driving the first motor M1, power from the battery 37 is supplied to the PCU 34, converted from direct current to three-phase alternating current, and supplied to the first motor M1. When the first motor M1 generates power, the power generated by the first motor M1 is stored in the battery 37 through the rectifier circuit of the regulator and the like.

The second motor M2 generates electricity by rotating the rotor with the rotational power of the crankshaft 26 while the engine E is running. The operation of the second motor M2 may include driving as an assist motor that assists the driving of the engine E. Operation of the second motor M2 may include driving the engine E as a starter motor.

When the second motor M2 is driven, power from the battery 37 is supplied to the PCU 34, converted from direct current to three-phase alternating current, and supplied to the second motor M2. When the second motor M2 generates power, the power generated by the second motor M2 is stored in the battery 37 through the rectifier circuit of the regulator and the like.
The PCU 34 may separately include a first motor control section that controls the first motor M1 and a second motor control section that controls the second motor M2.

The power switching device 31 switches the power transmission path between the engine E, the first motor M1 and the second motor M2. Under the control of the power switching device 31, the engine E, the first motor M1 and the second motor M2 cooperate to drive the rear wheel 4 (make the motorcycle 1 run). Under the control of the power switching device 31, the first motor M1 and the second motor M2 can be driven to generate power. The drive system S and the rear wheels 4 are connected by a chain-type transmission mechanism 56, for example.

Also referring to FIG. 7, the PCU (Power Control Unit) 34 is an integrated control unit including a PDU (Power Drive Unit) 34a and an ECU (Electric Control Unit) 34b. The PCU 34 mainly controls the operation (driving and power generation) of the first motor M1 and the second motor M2 based on various sensor information. PCU 34 controls the current and voltage between first motor M1 and second motor M2 and battery 37 .

The PCU 34 includes a converter that raises and lowers voltage and an inverter that converts DC current to AC current. The inverter includes a bridge circuit using a plurality of switching elements such as transistors, a smoothing capacitor, and the like, and controls energization to each stator winding of the first motor M1 and the second motor M2. The first motor M1 and the second motor M2 switch between power running and power generation according to control by the PCU 34 .

The battery 37 obtains a predetermined high voltage (eg, 48V to 192V) by connecting a plurality of unit batteries 37a in series, for example. The battery 37 includes a lithium ion battery as chargeable/dischargeable energy storage. The battery 37 supplies electric power to the first motor M1 and can store electric power regenerated by the first motor M1 and electric power generated by the second motor M2.

Electric power from the battery 37 is supplied to the PDU 34a, which is a motor driver, via a contactor or the like interlocked with the main switch of the motorcycle 1, for example. Electric power from the battery 37 is converted from direct current to three-phase alternating current by the PDU 34a, and then supplied to the first motor M1 and the second motor M2.
The output voltage from the battery 37 is stepped down through a DC-DC converter and used to charge a 12V sub-battery. The sub-battery supplies power to general electrical components such as lamps, meters, locking devices, and control system components such as ECUs. By installing a sub-battery, various electromagnetic locks can be operated even when the battery 37 is removed.

The battery 37 is detached from the vehicle body and can be charged by a charger outside the vehicle. The battery 37 may be rechargeable by a charger connected to an external power source while mounted on the vehicle body, for example.
The battery 37 has a BMU (Battery Management Unit) that monitors charge/discharge status, temperature, and the like. Information monitored by the BMU is shared with the ECU 34b when the battery 37 is mounted on the vehicle body. The ECU 34b drives and controls the first motor M1 and the second motor M2 via the PDU 34a based on detection information input from various sensors.

<Control part>
FIG. 7 is a block diagram showing the configuration of the control section 41 of the drive system S. As shown in FIG.
The control unit 41 includes a PCU 34, an engine ECU 42, and a clutch ECU 43.
PCU 34 controls the operation (driving and power generation) of first motor M1 and second motor M2.

The engine ECU 42 controls the start, operation and stop of the engine E by activating engine accessories such as an ignition device and a fuel injection device according to the degree of opening of the accelerator. The engine ECU 42 includes an accelerator opening sensor 46 for detecting the amount of operation of an accelerator operator (for example, an accelerator grip), an engine speed sensor 47 for detecting the engine speed, and a vehicle speed (for example, wheel speed) of the motorcycle 1. Detected information from the vehicle speed sensor 48 and the like is input. The engine ECU 42 operates engine accessories such as an ignition device and a fuel injection device based on various types of input detection information.

The clutch ECU 43 is a power switching control section, and operates the power switching device 31 based on various sensor information. The clutch ECU 43 switches which of the engine E, the first motor M1 and the second motor M2 should be connected to the rear wheels 4 so as to be able to transmit power. The clutch ECU 43 is connected to a clutch actuator 32 that connects and disconnects a clutch in the power switching device 31, for example.
The engine ECU 42 and the clutch ECU 43 may be provided separately or integrally.

The control unit 41 includes, for example, a remaining fuel capacity sensor 45 for detecting the remaining capacity of the fuel tank of the engine E, an accelerator opening sensor 46 for detecting the accelerator opening (required output amount) of the passenger, and a rotational speed of the engine E. Various sensors such as an engine rotation speed sensor 47 that detects the vehicle speed of the motorcycle 1, a vehicle speed sensor 48 that detects the vehicle speed of the motorcycle 1, and a remaining battery capacity sensor 49 that detects the remaining capacity of the battery 37 are connected.

The control unit 41 is activated, for example, when the main switch of the motorcycle 1 is turned on, and starts controlling the drive system S. The control unit 41 stores, in memory, a map in which the correlation between the vehicle speed and the output (torque) is set for each accelerator opening, for example. The control unit 41 appropriately causes the engine E, the first motor M1 and the second motor M2 to cooperate based on the output from each sensor, a predetermined map, and the like. The control unit 41 applies torque from the drive system S to the rear wheel 4 to run the motorcycle 1 and enables the battery 37 to be charged.

The control unit 41 has a plurality of control modes for cooperating the engine E, the first motor M1 and the second motor M2. The control unit 41 functions as a control mode switching unit that switches between a plurality of control modes. Switching of the control mode is functionally realized by processing executed based on a preset computer program.

<Control mode>
The plurality of control modes of control unit 41 include EV mode, hybrid mode, regeneration mode, and engine drive mode.
Referring to FIG. 3, in the EV mode, the engine E is stopped, the first motor M1 is driven, and the motorcycle 1 is driven by the driving force of the first motor M1.
Referring to FIG. 4, in the hybrid mode, the second motor M2 is driven by the engine E as a generator, and the motorcycle 1 is driven by the driving force of the first motor M1.
Referring to FIG. 5, in the regeneration mode, the kinetic energy of the motorcycle 1 is used to drive the first motor M1 as a generator when the motorcycle 1 decelerates, and the battery 37 is charged with the electric power generated by the first motor M1.
Referring to FIG. 6 , in the engine drive mode, the driving force of the engine E is used to drive the motorcycle 1 .
Each control mode can be automatically switched according to sensor output or the like, or can be arbitrarily switched by the operation of the passenger.

The multiple control modes are described in more detail below.
First, an EV (Electric Vehicle) mode in which the engine E is stopped and the vehicle is driven by the driving force of the first motor M1 will be described. The EV mode is a motor drive mode in which the motorcycle 1 can travel only by the driving force (motor torque) of the first motor M1, for example, when the motorcycle 1 is running at medium to low speeds (especially when cruising). In the EV mode, the motorcycle 1 is run with the engine E and the second motor M2 disconnected from the rear wheel 4 .

In the EV mode, it is also possible to drive the engine E and use the driving force of the engine E to generate power with the second motor M2 (hybrid mode). In the hybrid mode, the power generated by the second motor M2 is stored in the battery 37, but may be directly supplied to the first motor M1.
The hybrid mode is performed, for example, when the motorcycle 1 starts moving until it reaches a specified speed, when traveling uphill, when a sudden acceleration is required, and the like. The hybrid mode is also implemented when the remaining battery capacity is low. Since the motorcycle 1 is smaller than a passenger car and the mounting size (capacity) of the battery 37 is limited, the hybrid mode is more likely to be used than the EV mode.

It is also possible to supply at least part of the drive power of the engine E and the second motor M2 to the output of the drive system S in the hybrid mode. As a result, the torque of the engine E and the second motor M2 can assist the driving of the rear wheels. If the remaining battery charge is below the first specified value, the drive assist by the second motor M2 may be restricted. Further, when the remaining battery capacity is lower than a second specified value, the driving by the first motor M1 may be restricted and switched to the engine drive mode. When the remaining capacity of the fuel tank is below a specified value, the proportion of rear wheel drive by the first motor M1 and the second motor M2 may be increased.

In EV mode and hybrid mode, when the motorcycle 1 decelerates or travels downhill, it shifts to "regenerative mode". In the regeneration mode, the rotational energy of the rear wheels 4 is input to the first motor M1 to regenerate (generate power), and the generated power is stored in the battery 37 . At this time, by switching the power switching device 31, the connection between the engine E and the rear wheels 4 may be released, and regeneration may be performed efficiently. In the regenerative mode, regenerative braking (engine braking) is generated on the rear wheels 4 . When the amount of charge in the battery 37 is equal to or greater than a specified value, the first motor M1 may idle to stop regeneration. At this time, by switching the power switching device 31, the engine E and the rear wheels 4 may be connected to generate engine braking.

During high-speed running (particularly during constant-speed running), etc., the power switching device 31 connects the engine E and the rear wheels 4 so that power can be transmitted, and the driving force of the engine E drives the motorcycle 1 (engine drive). mode). In the engine drive mode, the driving force of the engine E may be used to drive the second motor M2 to generate power, which may be stored in the battery 37 . In the engine drive mode, at least one of the first motor M1 and the second motor M2 may be driven to assist rear wheel drive.

<Engine placement>
Referring to FIG. 1, for example, the engine E is configured without a transmission behind the crankshaft 26, and the front-to-rear width of the crankcase 27 is narrowed. In the engine E of this embodiment, a cylinder block 28 projects obliquely forward and upward from the front portion of the crankcase 27 . Reference symbol C2 in the drawing indicates an axis (center axis of the cylinder bore, cylinder axis) along the projecting direction of the cylinder block 28 . The cylinder block 28 has the cylinder axis C2 inclined forward with respect to the vertical direction. The forward inclination angle of the cylinder axis C2 with respect to the vertical direction is set to, for example, 45 degrees or more, thereby suppressing the vertical height of the engine E as a whole. The cylinder block 28 is arranged on the vehicle front side of the crankshaft 26 .

<Motor arrangement>
Referring to FIG. 1, the first motor M1 is arranged behind the crankcase 27 of the engine E. As shown in FIG. The first motor M1 is arranged at a height overlapping the crankcase 27 of the engine E in the vertical direction. The first motor M1 is arranged at a position overlapping the pivot frame 8 in a side view. The first motor M1 is arranged with a rotating shaft (hereinafter referred to as a first rotating shaft) 151 along the left-right direction. The first rotating shaft 151 of the first motor M1 is arranged at a height overlapping the crankshaft 26 in the vertical direction. For example, the first rotating shaft 151 of the first motor M1 is arranged coaxially with the pivot shaft 17 . Reference symbol C3 in the drawing indicates the central axis (axis) of the first rotating shaft 151 and the pivot shaft 17 of the first motor M1.

For example, the first motor M1 may be arranged forward of the pivot frame 8. That is, the first rotating shaft 151 of the first motor M1 may be arranged on a separate shaft from the pivot shaft 17 . Further, instead of the illustrated output shaft 55, an output shaft separate from the rotating shaft 151 of the first motor M1 may be provided.

The second motor M2 is arranged behind and above the crankcase 27 of the engine E. The second motor M2 is arranged above the crankcase 27 of the engine E in the vertical direction. The second motor M2 is arranged forward of the pivot frame 8 in a side view. The second motor M2 is arranged with a rotating shaft (hereinafter referred to as a second rotating shaft) 251 along the left-right direction. The second rotating shaft 251 of the second motor M2 is arranged rearward of the crankshaft 26 and forward of the first rotating shaft 151 of the first motor M1 in the longitudinal direction of the vehicle. The second rotating shaft 251 of the second motor M2 is arranged above the crankshaft 26 and the first rotating shaft 151 of the first motor M1. Reference symbol C4 in the drawing indicates the central axis (shaft center) of the second rotating shaft 251 of the second motor M2.

Also referring to FIG. 8, for example, the first motor M1 is arranged offset to one side (left side) in the vehicle width direction with respect to the vehicle body left-right center CL. The first motor M1 as a whole is arranged on the left side of the left-right center CL of the vehicle body. On the other hand, the second motor M2 is arranged offset to the other side (right side) in the vehicle width direction with respect to the left-right center CL of the vehicle body. The second motor M2 as a whole is arranged on the right side of the left-right center CL of the vehicle body. By distributing the first motor M1 and the second motor M2 to the left and right and arranging them, the left and right weight balance of the drive system components including the motors M1 and M2 is improved. At least one of the first motor M1 and the second motor M2 may be arranged so as to overlap the vehicle body left-right center CL in a plan view.

1 and 8, for example, an output shaft 55 coaxial with the first rotating shaft 151 is arranged on the left side of the first motor M1. The output shaft 55 is an output portion of the drive system S, and outputs drive force (torque) via the power switching device 31 .
The output shaft 55 is connected to the rear wheel 4 via a chain-type first transmission mechanism 56, for example. A drive sprocket 56a of a first transmission mechanism 56 is supported on the right end of the output shaft 55 so as to be rotatable therewith.

For example, an input shaft 155 coaxial with the second rotating shaft 251 is arranged on the right side of the second motor M2. The driving force (torque) of engine E (crankshaft 26 ) is input to input shaft 155 . The input shaft 155 is connected to the crankshaft 26 via a chain-type second transmission mechanism 156, for example.

By distributing the first transmission mechanism 56 and the second transmission mechanism 156 to the left and right, the left and right weight balance of the drive system components is further improved. Each

transmission mechanism

56, 156 is offset on the same side as the corresponding motors M1, M2. The first transmission mechanism 56 and the second transmission mechanism 156 are not limited to the chain type, and may be belt type, shaft type, gear type, or the like.

<Battery placement>
Referring to FIG. 1, a battery 37 as a power source for drive system S is arranged below seat 21 . The battery 37 is arranged across the left and right center CL of the vehicle body (see FIG. 8). The battery 37 is composed of, for example, a plurality of (for example, a pair of left and right) unit batteries 37a. Each unit battery 37a has the same configuration. Each unit battery 37a has, for example, a prismatic shape (rectangular parallelepiped shape) that has a rectangular cross section and extends in the longitudinal direction. Each unit battery 37a is arranged with its longitudinal direction oriented in the vehicle front-rear direction, and its overall vertical width is suppressed.

Each unit battery 37a is accommodated, for example, in an integrated battery box. Each unit battery 37a can be attached to and detached from a battery box fixed to the vehicle body without tools. Each unit battery 37a is configured as a mobile battery that can be charged and discharged while removed from the vehicle body. A symbol G2 in the figure indicates the center of gravity position of the battery 37 in a side view (hereinafter simply referred to as the center of gravity).

The battery 37 generates a predetermined high voltage (48-72V) by connecting a plurality of unit batteries 37a in series. Each unit battery 37a is composed of, for example, a lithium ion battery as a chargeable/dischargeable energy storage. Each unit battery 37a is connected to the PCU 34 via a junction box (distributor) and a contactor (electromagnetic switch). A three-phase cable extends from the PCU 34 and is connected to the first motor M1.

The rear frame 9 has a pair of left and right rear frame members 9a. The left and right rear frame members 9a are arranged apart from each other in the vehicle width direction. At least a portion of the battery 37 is arranged between the left and right rear frame members 9a. The battery 37 is spaced apart in front and above the rear wheel 4 in a side view. The battery 37 is supported by the left and right rear frame members 9a.

The battery 37 in the rear body cover 19b can be attached/detached to/from the battery box and the vehicle body by attaching/detaching or opening/closing the seat 21. As shown in FIG.
The rear body cover 19b covering the rear portion of the vehicle body has a smaller overall width in the vehicle width direction than the front body cover 19a covering the front portion of the vehicle body. Therefore, for example, by making the side portion of the rear body cover 19b detachable or openable, it becomes possible to access the battery 37 in the rear body cover 19b from the side of the vehicle body and to attach and detach the battery 37. FIG. Also, by making the rear part of the rear body cover 19b detachable or openable/closable, it becomes possible to access the battery 37 from the rear of the vehicle body and to attach/detach the battery 37. As shown in FIG.

<PCU placement>
Referring to FIG. 1, the PCU 34 has a rectangular parallelepiped outer shape and is arranged with one side extending along the vehicle width direction.
The PCU 34 in FIG. 1 is arranged with its upper and lower surfaces substantially horizontal when viewed from the vehicle width direction (side view). The PCU 34 is arranged across the left and right center CL of the vehicle body (see FIG. 8). The PCU 34 is arranged behind the head pipe 6 . The PCU 34 is arranged inside the front body cover 19a. The PCU 34 may be configured to receive running air through a prescribed air guide duct or the like. A symbol G1 in the drawing indicates the position of the center of gravity of the PCU 34 in a side view (hereinafter simply referred to as the center of gravity).

The PCU 34 of this embodiment is included in the vehicle component 23 in front of the seat 21 . The main frame 7 includes a pair of left and right main frame members 7a. The left and right main frame members 7a extend rearward from the head pipe 6 while spreading out to the left and right. The left and right main frame members 7a are arranged apart from each other in the vehicle width direction. At least a portion of the PCU 34 is arranged between the left and right main frame members 7a. The PCU 34 is supported by the left and right main frame members 7a.

The PCU 34 is arranged above the engine E. In the engine E, the cylinder block 28 is greatly tilted forward to reduce the height, and the PCU 34 can be easily arranged. It is conceivable to dispose a battery 37 above the engine E instead of the PCU 34 (or together with the PCU 34).

<Placement of drive system parts>
Referring to FIG. 1, in the embodiment, when viewed from the side of the vehicle, the axis C1 of the crankshaft 26, the axis C3 of the first rotation shaft 151, and the axis C4 of the second rotation shaft 251 are triangles having these vertices. They are arranged side by side in a shape. The axis C1 of the crankshaft 26 and the axis C3 of the first rotating shaft 151 are arranged below the axis C4 of the second rotating shaft 251 and aligned with the axis C4 of the second rotating shaft 251 in the longitudinal direction of the vehicle. are arranged in front of and behind the .

In addition, when viewed from the side of the vehicle, the center of gravity G2 of the battery 37, the center of gravity G1 of the PCU 34, and the center of gravity C4 of the second rotation shaft 251 are arranged side by side in an inverted triangle shape with these as vertices. The center of gravity G2 of the battery 37 and the center of gravity G1 of the PCU 34 are arranged above the center C4 of the second rotation shaft 251, and are distributed in the longitudinal direction of the vehicle to the front and rear of the center C4 of the second rotation shaft 251. ing.

An inverted triangle connecting the center of gravity G2 of the battery 37, the center of gravity G1 of the PCU 34, and the center of gravity C4 of the second rotation shaft 251 is the center of gravity C1 of the crankshaft 26, the center of gravity C3 of the first rotation shaft 151, and the second rotation shaft 251. The width in the vehicle front-rear direction is larger than the triangular shape connecting the axis C4.
Specifically, the distance in the longitudinal direction of the vehicle between the center of gravity G1 of the PCU 34 and the center of gravity C4 of the second rotation shaft 251 (hereinafter referred to as the first distance L1) is the center of gravity C1 of the crankshaft 26 and the second rotation It is longer than the distance in the longitudinal direction of the vehicle between the axis C4 of the shaft 251 (hereinafter referred to as the second distance L2).
Further, the distance in the longitudinal direction of the vehicle between the center of gravity G2 of the battery 37 and the center of gravity C4 of the second rotation shaft 251 (hereinafter referred to as third distance L3) is the same as the center of gravity C3 of the first rotation shaft 151 and the second It is longer than the distance in the longitudinal direction of the vehicle (hereinafter referred to as the fourth distance L4) between the rotation shaft 251 and the axis C4.

In the embodiment, when viewed from the side of the vehicle, the engine E, the first motor M1 for driving, the battery 37 and the PCU 34 are positioned around the second motor M2 for power generation while their positions are shifted in the vertical direction and the front-rear direction. They are arranged side by side around the two motors M2. Specifically, the PCU 34 is arranged above and in front of the second motor M2, the battery 37 is arranged above and behind the second motor M2, and the engine E is arranged below and in front of the second motor M2. A drive motor is arranged in the rear lower part.

The arrangement of drive system components is not limited to the arrangement described above. For example, the engine E and the drive motor may be arranged above the second motor M2, or the PCU 34 and the battery 37 may be arranged below the second motor M2. Also, the battery 37 and the drive motor may be arranged in front of the second motor M2, or the PCU 34 and the engine E may be arranged in the rear of the second motor M2.

The PCU 34 and the battery 37 are arranged so that at least a part of them overlap each other in the vertical direction. The PCU 34 and the battery 37 are connected to each other via a high voltage line (wiring) 39 . The high voltage line 39 is arranged so as to extend linearly in the vehicle front-rear direction. The term "extends linearly" means that the PCU 34 and the battery 37 may be allowed to sway (curve less than 90 degrees) within the vertical width, in addition to extending along the vehicle width direction.

As described above, the motorcycle 1 in the above embodiment includes the first driving motor M1 for applying driving force to the rear wheel 4 and the second electric power generating motor M2 provided separately from the first motor M1. , a PCU 34 that controls the first motor M1 and the second motor M2, a battery 37 that supplies power to the first motor M1, and an engine E that drives the second motor M2 to generate electricity. . The motorcycle 1 is configured as a series hybrid vehicle. In the motorcycle 1, the crankshaft 26 of the engine E, the first rotating shaft 151 of the first motor M1, and the second rotating shaft 251 of the second motor M2 are axially parallel to each other. are placed. The axial direction is oriented in the vehicle width direction (vehicle left-right direction). When viewed from the axial direction, the axial center C1 of the crankshaft 26, the axial center C3 of the first rotating shaft 151, and the axial center C4 of the second rotating shaft 251 are arranged in a triangular shape with these vertices. are placed in When viewed from the axial direction, the center of gravity G2 of the battery 37, the center of gravity G1 of the PCU 34, and the center of gravity C4 of the second rotating shaft 251 are arranged side by side in an inverted triangle shape with these vertices.
According to this configuration, the first motor M1, the second motor M2, and the engine E, which are heavy objects, can be arranged close to each other (concentrated) in a triangular shape. Also, the PCU 34, the battery 37, and the second motor M2, which are also heavy objects, can be placed close to each other (concentrated) in an inverted triangle shape. Therefore, mass concentration of these drive system components can be achieved. In addition, the engine E, the first motor M1, the battery 37, and the PCU 34 are arranged vertically with the second motor M2 for power generation as a boundary, so that the weight balance of the drive system components can be improved.

In the above configuration, the axial center C1 of the crankshaft 26 and the axial center C3 of the first rotating shaft 151 are arranged below the axial center C4 of the second rotating shaft 251, and are arranged in the longitudinal direction of the vehicle. They are distributed to the front and back of the axis C4 of the two rotating shafts 251 and arranged. In addition, the center of gravity G2 of the battery 37 and the center of gravity G1 of the PCU 34 are arranged above the center C4 of the second rotation shaft 251, and are located above the center C4 of the second rotation shaft 251 in the longitudinal direction of the vehicle. They are arranged in front and back.
In this way, the engine E, the first motor M1, the battery 37, and the PCU 34, which are heavy objects, are arranged with their positions shifted in the vertical direction and the front-rear direction around the second motor M2 for power generation. Drive system components can be placed closer together (clumped). Therefore, the mass of the drive system components can be concentrated, and the weight balance of the drive system components can be improved.

Further, in the motorcycle 1, the crankshaft 26 and the PCU 34 are arranged on one side (the front side) in the vehicle front-rear direction of the second rotation shaft 251, and the center of gravity G1 of the PCU 34 is arranged when viewed from the axial direction. and the axis C4 of the second rotating shaft 251 in the longitudinal direction of the vehicle is defined as a first distance L1; The first distance L1 is set longer than the second distance L2 when the distance in the front-rear direction is the second distance L2. That is, the PCU 34 is arranged on the front side of the crankshaft 26 .
According to this configuration, among the PCU 34 and the crankshaft 26 (and thus the engine E) positioned on the front side of the second motor M2, by arranging the PCU 34 on the front side of the crankshaft 26, It is not necessary to arrange the PCU 34 in the As a result, the engine E and the PCU 34 can be staggered forward and backward to be efficiently arranged, and the heat from the engine E can be made difficult to be transmitted to the PCU 34 .

In the motorcycle 1, the first rotating shaft 151 and the battery 37 are arranged on one side (rear side) of the second rotating shaft 251 in the longitudinal direction of the vehicle. 37 and the axis C4 of the second rotation shaft 251 in the longitudinal direction of the vehicle is defined as a third distance L3; The third distance L3 is set longer than the fourth distance L4 when the distance in the vehicle front-rear direction between C4 is a fourth distance L4. That is, the battery 37 is arranged on the rear side of the first rotating shaft 151 .
According to this configuration, among the battery 37 and the first rotating shaft 151 (and thus the first motor M1) positioned on the rear side of the second motor M2, the battery 37 can be arranged on the rear side of the first motor M1. Therefore, it is not necessary to arrange the battery 37 right above the first motor M1. As a result, the first motor M1 and the battery 37 can be staggered forward and backward to be efficiently arranged, and the heat from the first motor M1 can be made difficult to be transmitted to the battery 37 .

The motorcycle 1 further includes a high-voltage line 39 that connects the PCU 34 and the battery 37, and the high-voltage line 39 extends linearly in the longitudinal direction of the vehicle.
According to this configuration, the high-voltage wire 39 between the PCU 34 and the battery 37 extends linearly in the longitudinal direction of the vehicle, so that the load on the high-voltage wire 39 is reduced compared to when the high-voltage wire 39 is bent. be able to. Also, the length of the high voltage line 39 can be shortened to reduce weight and cost.

In the motorcycle 1, the crankshaft 26 of the engine E, the first rotation shaft 151 of the first motor M1, and the second rotation shaft 251 of the second motor M2 are arranged along the vehicle width direction. are placed.
According to this configuration, the first motor M1, the second motor M2, and the engine E can be arranged close to each other when viewed from the side in the vehicle width direction. It is possible to suppress

Further, in the motorcycle 1, the first transmission mechanism 56 that connects the first motor M1 and the rear wheel 4 and the second transmission mechanism 156 that connects the engine E and the second motor M2 are provided. The first motor M1 and the first transmission mechanism 56 are offset on one side (left side) in the vehicle width direction, and the second motor M2 and the second transmission mechanism 156 are arranged on the other side in the vehicle width direction. (right side) are offset.
According to this configuration, the first motor M1 and the second motor M2 are arranged separately in the vehicle width direction, and the first transmission mechanism 56 and the second transmission mechanism 156 are also arranged separately on the same side as the corresponding motors. By doing so, the drive system components can be arranged in a well-balanced manner in the vehicle width direction.

Further, in the motorcycle 1, the battery 37 is detachable from the vehicle body, and is arranged behind the second motor M2.
According to this configuration, the detachable battery 37 is arranged at the rear part of the vehicle body, so that the battery 37 can be accessed from the upper side, the rear side, or both the left and right sides of the rear part of the vehicle body, and the battery 37 can be easily attached and detached. .

In the motorcycle 1, the battery 37 is arranged above the second motor M2 and below the seat 21 on which the rider sits.
According to this configuration, the battery 37 can be accessed by opening and closing the seat 21, and the attachment and detachment of the battery 37 can be further facilitated.

<Reference example>
FIG. 9 shows a reference example for explaining the effects of the embodiment.
The motorcycle 101 of FIG. 9 does not include the engine E and the second motor M2 (motor for power generation), but is configured as a pure EV that runs only on the power stored in the batteries 37, 37'. The same reference numerals are assigned to the same configurations as those of the above-described embodiment, and detailed description thereof will be omitted.

The motorcycle 101 further mounts a plurality of batteries 37' (hereinafter referred to as additional batteries 37') at the mounting portions of the engine E and the second motor M2 of the embodiment. For example, the additional battery 37' includes a plurality of unit batteries 37a, like the battery 37 of the embodiment. The additional battery 37' is arranged below the PCU 34 and in front of the first motor M1. The additional battery 37' is connected to the PCU 34 by a high voltage line (wiring) 39' extending linearly in the vertical direction. The distance between the PCU 34 and the additional battery 37' is short, and the shortening of the high-voltage line 39' facilitates connection, easy protection, and reduction in weight and cost. By installing the additional battery 37' instead of the engine E and the second motor M2, it is possible to maintain a weight balance similar to that of the hybrid vehicle of the embodiment while sufficiently securing the capacity of the additional battery 37'. Each part can be shared.

The present invention is not limited to the above-described embodiments. For example, the saddle-riding type vehicle includes general vehicles in which the driver straddles the vehicle body, motorcycles (motorized bicycles and scooter type vehicles). ), but also include vehicles with three wheels (including vehicles with two front wheels and one rear wheel, as well as vehicles with one front wheel and two rear wheels) or four-wheel vehicles (such as four-wheel buggies). The straddle-type vehicle includes not only a vehicle such as a motorcycle that turns in a direction in which the vehicle body is banked, but also a vehicle that turns by steering the steered wheels without banking the vehicle body.

In the above embodiment, an example of application to a hybrid motorcycle has been shown, but the present invention is not limited to this, and may be applied to various types of saddle-riding vehicles including two-wheel, three-wheel and four-wheel drive motors. Further, the present invention is not limited to a hybrid vehicle having an internal combustion engine, and may be applied to an electric vehicle that runs only with a drive motor.
The configuration in the above embodiment is an example of the present invention, and various modifications, such as replacing the constituent elements of the embodiment with known constituent elements, are possible without departing from the gist of the present invention.

1 Motorcycle (saddle type vehicle)
21 seat 4 rear wheel (drive wheel)
26 crankshaft (crankshaft)
34 PCU (control unit)
37 battery 39 high voltage line (wiring)
56 first transmission mechanism 151 first rotation shaft 156 second transmission mechanism 251 second rotation shaft E engine (internal combustion engine)
M1 first motor (drive motor)
M2 Second motor C1, C3, C4 Central axis (axis center)
CL Vehicle body left and right center G1, G2 Center of gravity L1 First distance L2 Second distance L3 Third distance L4 Fourth distance T Straight line

Claims

a driving motor (M1) for applying driving force to the driving wheels (4);
a second motor (M2) provided separately from the drive motor (M1);
a controller (34) for controlling the drive motor (M1) and the second motor (M2);
a battery (37) for powering said drive motor (M1);
An internal combustion engine (E) that drives the second motor (M2) to generate electricity,
A crankshaft (26) of the internal combustion engine (E), a first rotation shaft (151) of the drive motor (M1), and a second rotation shaft (251) of the second motor (M2) are , arranged axially parallel to each other,
When viewed from the axial direction, the axial center (C1) of the crankshaft (26), the axial center (C3) of the first rotating shaft (151), and the axial center (C4) of the second rotating shaft (251) are , are arranged side by side in a triangular shape with these as vertices,
The center of gravity (G2) of the battery (37), the center of gravity (G1) of the control device (34), and the center of axis (C4) of the second rotating shaft (251) are arranged in an inverted triangle with these as vertices. The saddle-riding type vehicle that is arranged.
a driving motor (M1) for applying driving force to the driving wheels (4);
a second motor (M2) provided separately from the drive motor (M1);
a controller (34) for controlling the drive motor (M1) and the second motor (M2);
a battery (37) for powering said drive motor (M1);
An internal combustion engine (E) that drives the second motor (M2) to generate electricity,
A crankshaft (26) of the internal combustion engine (E), a first rotation shaft (151) of the drive motor (M1), and a second rotation shaft (251) of the second motor (M2) are , arranged axially parallel to each other,
The crankshaft (26) and the first rotating shaft (151) are arranged below the second rotating shaft (251) and distributed to the front and rear of the second rotating shaft (251) in the longitudinal direction of the vehicle. are placed in the
The battery (37) and the control device (34) are arranged above the second rotation shaft (251), and are arranged in the front and rear direction of the second rotation shaft (251) in the longitudinal direction of the vehicle. A saddle-riding vehicle.
A wiring (39) connecting the control device (34) and the battery (37),
The straddle-type vehicle according to claim 1 or 2, wherein the wiring (39) is arranged to extend in the longitudinal direction of the vehicle.
The crankshaft (26), the first rotating shaft (151), and the second rotating shaft (251) are arranged with the axial direction along the vehicle width direction. A straddle-type vehicle according to any one of the items.
a first transmission mechanism (56) connecting the drive motor (M1) and the drive wheels (4);
a second transmission mechanism (156) that connects the internal combustion engine (E) and the second motor (M2);
The drive motor (M1) and the first transmission mechanism (56) are arranged offset to one side in the vehicle width direction,
The saddle-ride type vehicle according to any one of claims 1 to 4, wherein the second motor (M2) and the second transmission mechanism (156) are offset to the other side in the vehicle width direction.
The crankshaft (26) is arranged on one side in the vehicle front-rear direction of the second rotating shaft (251),
Of the battery (37) and the control device (34), the one located on one side in the vehicle front-rear direction of the second rotating shaft (251) is defined as a one-side drive system component (34), and
A first distance ( L1), and the distance in the longitudinal direction of the vehicle between the axis (C1) of the crankshaft (26) and the axis (C4) of the second rotating shaft (251) is defined as a second distance (L2),
The straddle-type vehicle according to any one of claims 1 to 5, wherein the first distance (L1) is set longer than the second distance (L2).
The first rotating shaft (151) is arranged on the other side in the vehicle front-rear direction of the second rotating shaft (251),
Of the battery (37) and the control device (34), the one located on the other side in the vehicle front-rear direction of the second rotating shaft (251) is defined as the other side drive system component (37), and
A third distance ( L3), and a fourth distance (L4) is the distance in the longitudinal direction of the vehicle between the axis (C3) of the first rotation shaft (151) and the axis (C4) of the second rotation shaft (251). ,
The straddle-type vehicle according to claim 6, wherein the third distance (L3) is set longer than the fourth distance (L4).
The saddle-ride type vehicle according to any one of claims 1 to 7, wherein the battery (37) is detachable from the vehicle body and arranged behind the second motor (M2).
The straddle-type vehicle according to claim 8, wherein the battery (37) is arranged above the second motor (M2) and below the seat (21) on which the passenger sits.