CN111989260A - Saddle-ride type electric vehicle - Google Patents
Saddle-ride type electric vehicle Download PDFInfo
- Publication number
- CN111989260A CN111989260A CN201980026024.5A CN201980026024A CN111989260A CN 111989260 A CN111989260 A CN 111989260A CN 201980026024 A CN201980026024 A CN 201980026024A CN 111989260 A CN111989260 A CN 111989260A
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- Prior art keywords
- battery
- vehicle body
- saddle
- disposed
- voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J43/00—Arrangements of batteries
- B62J43/10—Arrangements of batteries for propulsion
- B62J43/16—Arrangements of batteries for propulsion on motorcycles or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J23/00—Other protectors specially adapted for cycles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J43/00—Arrangements of batteries
- B62J43/20—Arrangements of batteries characterised by the mounting
Abstract
Provided is a saddle-ride type electric vehicle in which electric components such as a PCU are arranged at a position where space efficiency and cooling efficiency are improved. In an electric motorcycle (1) having a low floor (25) between a steering handle (2) and a seat (23) and driving a rear Wheel (WR) by a motor (M), a main battery (B1) for supplying electric power to the motor (M) is disposed below the seat (23). A PCU (60) is disposed on the rear side of the high-voltage battery (B1) in the vehicle body and in front of the axle (S) of the rear Wheel (WR). A battery box (50) for housing a main battery (B1) is arranged below the seat (23), a seat lower case cover (24) is arranged on the outer side of the battery box (50) in the vehicle width direction, and a slit (22) for introducing traveling wind is arranged on the seat lower case cover (24). A cover member (40) is disposed behind the battery case (50), and the cover member (40) has an opening (41) facing the rear of the PCU (60) vehicle body.
Description
Technical Field
The present invention relates to a saddle-ride type electric vehicle, and more particularly to a saddle-ride type electric vehicle that travels by a driving force of a motor housed in a power unit of a unit swing type that is swingably supported by a vehicle body frame.
Background
Conventionally, a saddle-ride type electric vehicle is known that travels by rotating a drive wheel by a motor driven by electric power of a battery.
Patent document 1 discloses a so-called small-wheel saddle-ride type electric vehicle having a low floor on which a passenger steps between a steering handle and a seat, a motor housed in a unit swing type power unit swingably supported on a vehicle body frame, and a battery arranged under the seat for supplying electric power to the motor.
Documents of the prior art
Patent document
Patent document 1: JP 2013-129337A
Disclosure of Invention
Problems to be solved by the invention
Here, in an electric vehicle in which a motor is driven by electric power of a battery, a PCU (power control unit) that controls power supply to the motor, a junction box to which a high-voltage wire is connected, a DC/DC converter that generates a charging current of a low-voltage battery (sub-battery) that supplies power to auxiliary devices such as a luminaire, and the like are used in addition to a high-voltage battery (main battery) and the motor. When these electrical components are disposed on the vehicle body, not only a limited space needs to be efficiently used, but also the handling of the wire harness and measures against heat generation need to be studied, but in patent document 1, the arrangement of such electrical components is not studied.
An object of the present invention is to provide a saddle-ride type electric vehicle in which electric components such as a PCU are disposed at positions where space efficiency and cooling efficiency are improved, in order to solve the above-described problems of the conventional art.
Means for solving the problems
In order to achieve the above object, the present invention is a saddle-ride type electric vehicle (1) having a low floor (25) on which a passenger steps between a steering handle (2) and a seat (23) and driving a rear Wheel (WR) by a motor (M), and is characterized in that a high-voltage battery (B1) for supplying electric power to the motor (M) is disposed below the seat (23), and a high-voltage electrical component (60) is disposed on the vehicle body rear side of the high-voltage battery (B1) and on the vehicle body front side of an axle (S) of the rear Wheel (WR).
In addition, a second feature is that a battery box (50) that houses the battery (B1) is disposed below the seat (23), a seat under cover (24) that is an exterior member is disposed on the vehicle width direction outside of the battery box (50), and a slit (22) that introduces traveling wind is provided in the seat under cover (24).
A third feature is that a cover member (40) is disposed behind the battery box (50), the cover member (40) includes at least a rear wall (45) located on the vehicle body rear side of the high-voltage electrical component (60) and a side wall (44) extending from the rear wall (45) toward the vehicle body front, and the rear wall (45) is provided with an opening (41) through which the high-voltage electrical component (60) faces the vehicle body rear.
In addition, according to a fourth aspect, the high voltage electrical component (60) is a PCU that is formed with a plurality of cooling fins (60a) on a vehicle body rear surface and has a substantially rectangular shape when viewed from a vehicle body side surface, and the PCU (60) is disposed at a position that is inclined forward and upward of the rear Wheel (WR) such that a vehicle body upper side is located rearward of a vehicle body lower side.
Further, a fifth characteristic is that a junction box (70) to which high-voltage wiring is collectively connected is disposed below the PCU (60) and in front of the rear Wheel (WR).
In addition, a sixth characteristic is that a step-down regulator (80) for stepping down the supply current of the high-voltage battery (B1) is disposed below the battery box (50).
In addition, according to a seventh aspect, the battery box (50) is provided with a housing portion (54) for housing the two high-voltage batteries (B1) in parallel in the vehicle width direction, two terminals (55) connected to the high-voltage batteries (B1) are respectively disposed on a bottom portion (54a) of the housing portion (54) at positions on the vehicle width direction outer side, a pair of left and right protruding portions (53) for housing the terminals (55) are formed on a lower portion of the battery box (50), and the step-down regulator (80) is disposed between the pair of left and right protruding portions (53).
Further, an eighth feature is that a recess (45a) that conforms to the shape of the rear Wheel (WR) is provided in the center in the vehicle width direction of the rear wall (45) of the cover member (40).
In addition, a ninth characteristic is that a storage box (30) for storing a low-voltage battery (B2) is disposed below the low floor (25).
Further, according to a tenth aspect of the present invention, the motor (M) is disposed on the right side or the left side in the vehicle width direction, and a wire harness (61) that extends from the high-voltage electrical component (60) and supplies electric power to the motor (M) has a portion that extends from a lower end of the high-voltage electrical component (60) toward the outside in the vehicle width direction on the side opposite to the position where the motor (M) is disposed.
Effects of the invention
According to a first aspect, a saddle-ride type electric vehicle (1) has a low floor (25) on which a passenger steps between a steering handle (2) and a seat (23), and a rear Wheel (WR) is driven by a motor (M), wherein a high-voltage battery (B1) that supplies electric power to the motor (M) is disposed below the seat (23), and a high-voltage electrical component (60) is disposed on a vehicle body rear side of the high-voltage battery (B1) and on a vehicle body front side of an axle (S) of the rear Wheel (WR), so that the high-voltage electrical component that generates heat during travel can be actively cooled using travel wind. Specifically, in a small-sized saddle-ride type electric vehicle provided with a high-voltage battery under a seat, traveling wind generated during traveling easily passes through the side of the high-voltage battery and is easily detoured to the rear of the high-voltage battery due to the vehicle body shape, and flows from the lower side of a low floor to the rear upper side and detours to the rear of the high-voltage battery. In addition, as compared with a configuration in which the high-voltage electrical components are disposed on the outside of the high-voltage battery in the vehicle width direction, an increase in the vehicle width direction dimension at a position below the seat can be prevented.
According to the second aspect, since the battery box (50) for housing the battery (B1) is disposed below the seat (23), the seat under cover (24) serving as an exterior member is disposed on the vehicle width direction outer side of the battery box (50), and the slit (22) for introducing the traveling wind is provided in the seat under cover (24), the traveling wind is introduced into the seat under cover through the slit, the traveling wind can be actively guided to the rear side of the battery box, and the cooling effect of the high-voltage electrical components can be improved.
According to the third feature, since the cover member (40) is disposed behind the battery box (50), the cover member (40) includes at least a rear wall (45) located on the vehicle body rear side of the high-voltage electrical component (60) and a side wall (44) extending from the rear wall (45) toward the vehicle body front side, and the rear wall (45) is provided with an opening (41) for allowing the high-voltage electrical component (60) to face the vehicle body rear side, the traveling wind heated by the high-voltage electrical component is discharged from the opening toward the vehicle body rear side while being guided to the high-voltage electrical component by the cover member, and the cooling effect of the traveling wind can be further improved. In addition, the cover member can protect the high-voltage electrical components and the periphery thereof from water splash, riprap and the like.
According to the fourth aspect, the high-voltage electrical component (60) is a PCU that is formed with a plurality of cooling fins (60a) on the rear surface of the vehicle body and that is substantially rectangular when viewed from the side of the vehicle body, and the PCU (60) is disposed at a position that is inclined forward and upward of the rear Wheel (WR) so that the vehicle body upper side is located rearward of the vehicle body than the vehicle body lower side, so that the PCU can be disposed at a position that has a high cooling effect while effectively utilizing the dead space between the battery box and the rear wheel. Further, the cooling fin faces the opening of the cover member, whereby the PCU cooling effect can be improved.
According to the fifth feature, since the junction box (70) to which the high-voltage wiring is collectively connected is disposed below the PCU (60) and in front of the rear Wheel (WR), the length of the high-voltage wiring can be shortened by disposing the junction box at a position close to the high-voltage battery and the PCU. Thus, the layout and wiring operation of the high-voltage wiring can be simplified, and the number of production steps can be reduced.
According to the sixth aspect, since the step-down regulator (80) for stepping down the supply current of the high-voltage battery (B1) is disposed below the battery box (50), the PCU, the junction box, and the step-down regulator are disposed in the vicinity of the battery box in a concentrated manner, and the length of the high-voltage wiring connecting these components can be shortened.
According to the seventh feature, since the battery box (50) is provided with the housing portion (54) for housing the two high-voltage batteries (B1) in parallel in the vehicle width direction, the two terminals (55) connected to the high-voltage battery (B1) are respectively disposed at positions on the outer side in the vehicle width direction of the bottom portion (54a) of the housing portion (54), the pair of left and right protruding portions (53) for housing the terminals (55) are formed at the lower portion of the battery box (50), and the step-down regulator (80) is disposed between the pair of left and right protruding portions (53), the step-down regulator is housed between the left and right protruding portions, whereby effective use of space can be achieved, and the disposition position of the step-down regulator can be increased. Further, by disposing the step-down regulator at a high position, the step-down regulator can be protected from rocks under the vehicle body, and the side of the step-down regulator can be protected by the projecting portion. Further, since the traveling wind flowing under the low floor is concentrated at a position near the center of the vehicle body by the left and right projecting portions, the cooling effect of the down regulator is also improved.
According to the eighth aspect, since the recess (45a) that matches the shape of the rear Wheel (WR) is provided in the center of the rear wall (45) of the cover member (40) in the vehicle width direction, even when the rear cushion contracts and the rear wheel moves upward, the rear wheel can be prevented from coming into contact with the cover member, and the cover member can be disposed with a small space between the battery box and the rear wheel being effectively utilized. Further, a large storage space is secured on the vehicle width direction outer side of the recessed portion, and the pressure of the traveling wind received from the vehicle body front side can be made to flow stably toward the vehicle body rear side through this space.
According to the ninth aspect, since the storage box (30) for storing the low-voltage battery (B2) is disposed below the low floor plate (25), the harness for connecting the step-down regulator and the low-voltage battery can be shortened by disposing the low-voltage battery at a position close to the step-down regulator. In addition, the low-voltage battery is disposed at the lower part of the low floor, so that the center of gravity of the vehicle is lowered, and the bottom surface of the low-voltage battery can be protected from flying stones and the like by the storage box. Further, by disposing the low-voltage battery at a position close to the step-down regulator, the wire harness for connecting the step-down regulator and the low-voltage battery can be shortened.
According to the tenth aspect, since the motor (M) is disposed on the right side or the left side in the vehicle width direction and the wire harness (61) that extends from the high-voltage electrical component (60) and supplies electric power to the motor (M) has a portion that extends from the lower end of the high-voltage electrical component (60) toward the outside in the vehicle width direction on the side opposite to the position where the motor (M) is disposed, it is possible to secure the amount of deflection of the wire harness through which a high-voltage current flows, reduce the bending of the wire harness when the power unit of the swing unit swings, and reduce the load on the wire harness.
Drawings
Fig. 1 is a left side view of an electric motorcycle according to an embodiment of the present invention.
Fig. 2 is a left side view of the electric motorcycle with the main exterior member removed.
Fig. 3 is a partially enlarged perspective view of the electric motorcycle as viewed from the left side of the vehicle body.
Fig. 4 is a perspective view of the electric motorcycle with the seat lower cover and the rear cover removed.
Fig. 5 is a perspective view of the electric motorcycle viewed from the right side rear of the vehicle body with the seat undercover and the rear undercover removed.
Fig. 6 is a perspective view of the cover member viewed from the rear side of the vehicle body.
Fig. 7 is a perspective view of the cover member viewed from the front side of the vehicle body.
Fig. 8 is a block diagram showing a wiring structure of a main harness connected to a main battery.
Fig. 9 is a partially enlarged perspective view of the electric motorcycle viewed from the left side of the vehicle body with the cover member removed.
Fig. 10 is a side view showing a state in which electrical components are arranged around a main battery.
Fig. 11 is a perspective view of the electric motorcycle as viewed from the bottom surface side.
Fig. 12 is a plan view of the battery case.
Fig. 13 is a cross-sectional view along line XIII-XIII of fig. 2.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a left side view of an electric motorcycle 1 as a saddle-ride type electric vehicle according to an embodiment of the present invention. The electric motorcycle 1 is a so-called scooter type electric vehicle in which a low floor 25 on which an occupant steps is provided between a steering handle 2 and a seat 23.
A pair of left and right front forks 9 rotatably pivotally supporting the front wheel WF can be swung by the steering handle 2 extending in the vehicle width direction. A rearview mirror 3 and a wind screen 4 are attached to a handlebar cover 33 covering the front and rear of the steering handlebar 2. A front cover 5 covering the vehicle body front side and a floor panel 27 covering the vehicle body rear side and facing the feet of the occupant are disposed below the handlebar cover 33. A headlamp 7 supported by a lamp support 31 and a pair of left and right front winker devices 6 are disposed in front of the front cover 5. A front fender 8 covering the upper side of the front wheel WF is supported between the left and right front forks 9.
A brake pedal 26 for actuating a brake of the rear wheel WR is disposed on the upper surface of the lower plate 25, and a lower cover 10 connected to the lower end of the front cover 5 is disposed below the lower plate 25. A seat lower cover 24 having a curved shape protruding toward the vehicle body front side is disposed below the seat 23 on which the driver sits. The seat lower cover 24 is provided with slits 22 for actively taking in traveling wind from the front of the vehicle body in a pair of left and right directions. A side bracket 11 and a tandem pedal 13 are disposed below the seat lower case cover 24. Further, a pair of rear cases 21 are disposed behind the seat lower case 24 in the vehicle width direction, and a cargo bed 37 surrounded by the grip pipes 36 and a rear bracket 20 attached to the upper surface of the cargo bed 37 are disposed on the upper portion of the rear cases 21. A tail lamp 19 and a rear winker device 28 are disposed behind the rear housing cover 21.
A swing unit type power unit P having a rear wheel WR rotatably supported by an axle S at a rear position of the under cover 10 and a motor M for driving the rear wheel WR is swingably attached to the body frame via a link mechanism 12. The rear part of the power unit P is suspended from the body frame via a rear cushion 18, and a rear fender 17 covering the upper part of the rear wheel WR is attached to the upper part of the power unit P.
A cover member 40 (dot drawing portion) is disposed between the seat lower cover 24 and the rear fender 17, and the cover member 40 receives the traveling wind introduced from the slit 22 of the seat lower cover 24 and the traveling wind flowing inside the lower cover 10.
Fig. 2 is a left side view of the electric motorcycle 1 with main exterior components removed. The body frame F of the electric motorcycle 1 includes: a main frame F2 extending downward from the head pipe F1 at the center in the vehicle width direction, a pair of left and right lower frames F3 connected to the lower end of the main frame F2 and curved rearward of the vehicle body, an upright portion F4 erected upward from the rear end of the lower frame F3, and a pair of left and right rear frames 6 connected to the upright portion F4 and extending rearward of the vehicle body. A bent tube F5 that connects the left and right upright portions F4 is connected to the front portion of the upright portion F4.
A steering rod 34 is pivotally supported on the head pipe F1 so as to be freely rotatable. The steering handle 2 is fixed to an upper end portion of the steering rod 34, and a bottom bridge 32 that supports an upper end portion of the front fork 9 is fixed to one lower end portion. The seat 23 is attached to a seat base 29 so as to be openable and closable with a vehicle body front side end portion as an axis. A battery box 50 is disposed below the seat base 29, and the battery box 50 houses two main batteries (high-voltage batteries) B1 that supply electric power to the motor M in a vehicle width direction. The rated voltage of the main battery B1 is, for example, 48V.
The battery box 50 is housed in a space between the pair of right and left rising portions F4 behind the bent tube F5. The seat lower cover 24 (see fig. 1) extends from the front of the bent pipe F5 to the side of the left and right raised portions F4 so as to cover the front and the side of the battery box 50
Below the lower plate 25, a storage box 30 is disposed, and the storage box 30 stores a sub-battery (low-voltage battery) B2 for supplying electric power to auxiliary devices such as the headlight 7 and electrical components such as a fuse. The rated voltage of sub-battery B2 is, for example, 12V.
A cover member 40 for receiving traveling wind from the front of the vehicle body in front of the rear fender 17 is disposed on the rear surface side of the battery case 50. A PCU (power control unit) 60 for controlling the supply of electric power to the motor M is disposed above the rear surface of the battery case 50. PCU60 having a plurality of cooling fins is formed in a rectangular box shape as viewed from the vehicle body side, and is disposed in a state in which the vehicle body upper side is inclined rearward of the vehicle body with respect to the vehicle body lower side. The PCU60 disposed in the vehicle body front side of the axle S of the rear wheel WR is housed between the rear frames F6 when viewed from the vehicle body side, and the lower side of the PCU is covered by the side wall of the cover member 40. As shown in fig. 1, rear housing cover 21 covers the area from the upper end of cover member 40 to the upper end of rear frame F6, and has a function of protecting the vehicle width direction outer side of PCU 60.
Fig. 3 is a partially enlarged perspective view of the electric motorcycle 1 as viewed from the left side of the vehicle body. Fig. 4 is a perspective view of the electric motorcycle 1 with the seat undercover 24 and the rear undercover 21 removed, and fig. 5 is a perspective view of the electric motorcycle as viewed from the rear on the right side of the vehicle body. As described above, the seat lower cover 24 extends from the front of the bent pipe F5 to the side of the left-right raised portion F4 so as to cover the front and the side of the battery box 50. According to this configuration, when the traveling wind generated during traveling flows along the outer wall surface of the seat lower cover 24 toward the rear of the vehicle body and winds around the rear of the battery box 50, the slit 22 is provided in the seat lower cover 24, whereby the traveling wind can be introduced into the seat lower cover 24 on the vehicle body front side. On the other hand, the lower portion of the low floor 25 is configured such that traveling wind flows rearward through the inside of the undercover 10.
The cover member 40 is formed in the following shape: protects electric components such as the PCU60 from splashed water, rocks, and the like, receives both traveling wind that flows rearward introduced from the slit 22 and traveling wind that flows rearward inside the under cover 10, and flows rearward above the vehicle body. Further, the cover member 40 is provided with an opening 41 at the center in the vehicle width direction, so that the PCU60 faces the rear of the vehicle body. Accordingly, the traveling wind heated by PCU60 is discharged from opening 41 toward the rear of the vehicle body, and the cooling effect of the traveling wind can be further improved.
On the other hand, the upper end of the cover member 40 is coupled to the rear housing 21 connected to the rear of the seat lower housing 24, and a part of the traveling wind received by the cover member 40 flows through the inside of the rear housing 21 toward the rear of the vehicle body.
In the present embodiment, by providing PCU60 in the path of the traveling wind, PCU60 can be actively cooled. Further, as compared with the configuration in which PCU60 is disposed on the vehicle width direction outer side of main battery B1, the vehicle width direction dimension can be prevented from increasing at a position below seat 23.
On the vehicle width direction outer side of rear frame F6 on the vehicle width direction left side, fifth harness 65 (refer to fig. 4) connected to the upper end portion of PCU60 is arranged. Further, a first harness 61 (see fig. 5) connected to a lower end portion of the PCU60 is disposed inside the cover member 40 on the right side in the vehicle width direction.
Fig. 6 is a perspective view of the cover member 40 viewed from the vehicle body rear side. Fig. 7 is a perspective view of the cover member 40 viewed from the front side of the vehicle body. The cover member 40 formed of a thin plate-shaped synthetic resin or the like is configured by connecting the right half body 40R and the left half body 40L at the center in the vehicle width direction. The cover member 40 has a rear wall 45 on the vehicle rear side, and a pair of left and right side walls 44 in the vehicle width direction extending from a front side end portion of the rear wall 45 toward the vehicle front side. The rear wall 45 is formed in a shape including a flat surface portion directed upward and rearward of the vehicle body, and a curved portion connected to a rear end portion of the flat surface portion, curved substantially along the outer shape of the rear wheel WR, and extending upward and rearward.
A recess 45a that projects toward the vehicle body front side is formed at the vehicle width direction center of the rear wall 45. Thus, even when the power unit P swings and the rear wheel WR moves upward, the rear fender 17 covering the rear wheel WR can be prevented from contacting the cover member 40.
Four seat surfaces 43a for engaging a grommet or the like that couples the right half body 40R and the left half body 40L are formed between the two half bodies. Further, a pair of left and right seating surfaces 43b for fixing the front side of the cover member 40 to the battery box 50 are formed on the rear wall 45 at a position closer to the vehicle body front side by fastening members such as bolts, and a bulging portion 42 for fixing the rear side of the cover member 40 to the rear frame F6 is formed at a position further to the vehicle body rear side and to the vehicle width direction outer side than the opening 41.
Fig. 8 is a block diagram showing a wiring structure of a main harness connected to a main battery B1. As electrical components to which the main harness is connected, in addition to the main battery B1 housed in the battery box 50 below the seat 23 and the PCU60 disposed on the rear surface of the battery box 50, there are a junction box 70 to which a plurality of high-voltage wires are collectively connected, a motor M housed in the power unit P, a step-down regulator 80 that steps down the electric power of the main battery B1 to a predetermined voltage, and a sub-battery B2 to which charging electric power is supplied from the step-down regulator 80.
Between the main battery B1 and the junction box 70, a sixth wire harness 66 is arranged. Between the junction box 70 and the PCU60, a fourth wire harness 64 and a fifth wire harness 65 are arranged. A first harness 61, a second harness 62, and a third harness 63 for transmitting a three-phase direct current are arranged between the PCU60 and the motor M. In addition, between the junction box 70 and the step-down regulator 80, a seventh wire harness 67 is arranged, and between the step-down regulator 80 and the sub-battery B2, an eighth wire harness 68 is arranged.
The electric power of the main battery B1 is supplied to the PCU60 and the step-down regulator 80 via the terminal box 70. The PCU60 supplies electric power of a magnitude corresponding to the operation of the driver to the motor M, and supplies electric power generated by regenerative power generation to the main battery B1 via the junction box 70 when the motor M regenerates power during braking. In addition, the step-down regulator 80 performs step-down control of the electric power supplied from the main battery B1 via the junction box 70 for charging of the sub-battery B2.
Fig. 9 is a partially enlarged perspective view of the electric motorcycle 1 viewed from the left side of the vehicle body with the left side cover member 40L removed. Junction box 70 in a thin box shape is disposed below PCU60 in proximity to the rear surface of battery case 50, and down regulator 80 is disposed at the bottom of battery case 50. PCU60 having a plurality of cooling fins 60a is disposed on the upper rear surface side of battery box 50 so as to be inclined toward the vehicle body rear side. A fifth harness 65 extending from the lower portion of the junction box 70 and wired upward along the left side is connected to the upper end portion of the PCU60, and a first harness 61 for supplying electric power to the motor M is connected to the lower end portion of the PCU 60. Further, a sixth harness 66 connected to the main battery B1 is connected to a lower portion of the junction box 70.
Fig. 10 is a side view showing the arrangement state of electric components centering on a main battery B1. The battery box 50 that houses a main battery B1 that is a long rectangular parallelepiped is disposed slightly inclined toward the vehicle body rear side. Junction box 70 is disposed on the rear side of battery box 50 near the lower side of the vehicle body, and PCU60 is disposed at a position above junction box 70 so as to be inclined toward the rear side of the vehicle body. In addition, a sixth wire harness 66 connected with the main battery B1 is arranged at a lower portion of the junction box 70. The first harness 61 connected to the lower portion of the PCU60 extends downward and forward through the right side of the junction box 70 in the vehicle width direction, then bends toward the vehicle body rear side, and is connected to the second harness 62 and the third harness 63 having a large diameter and connected to the front portion of the power unit P.
As described above, according to the arrangement structure of the electrical components of the present embodiment, the main battery B1, the PCU60, the junction box 70, the step-down regulator 80, and the motor M are arranged close to each other, whereby the length of the high-voltage wire harness through which a large current flows can be shortened, the layout and wiring work can be simplified, and the number of production steps can be reduced. The sub-battery B2 is also disposed in the vicinity of the front side of the battery box 50 in the vehicle body, and the main electric components are disposed in a concentrated manner in the vicinity of the center of the vehicle body, whereby mass concentration is also achieved.
Fig. 11 is a perspective view of the electric motorcycle 1 as viewed from the bottom surface side. In the figure, for convenience of explanation, the case of the power unit P and the rear wheel WR are shown in a detached state. As described above, the first harness 61 connected to the lower end portion of the PCU60 extends from the right side of the junction box 70 toward the front of the vehicle body, is connected to the second harness 62 having a large diameter covered with the guard pipe, and is connected to the third harness 63 of three phases that is bent rearward in the lateral direction of the down regulator 80 and connected to the motor M on the left in the vehicle width direction. According to the layout of the first, second, and third harnesses 61, 62, and 63, the bending of the harnesses when the swing unit type power unit P swings can be reduced, and the load on the harnesses can be reduced. In addition, by arranging the second wire harness 62 below the vehicle body of the step-down regulator 80, the step-down regulator 80 can be protected from rocks and the like by the second wire harness 62.
The junction box 70 corresponds to two main batteries B1, and has a pair of harness connection ports 70a on the left and right in the vehicle width direction. A sixth harness 66 supplied with electric power from the main battery B1 is connected to each harness connection port 70a, and a fourth harness 64 is connected to the fifth harness 65 (see fig. 10) extending from the vehicle width direction left side of the junction box 70 to the vehicle body upper side. The seventh harness 67 for supplying power to the step-down regulator 80 is connected to the harness connection port 70 a. Further, the eighth wire harness 68 connected to the sub-battery B2 extends from the bottom of the storage box 30 and is arranged on the vehicle body rear side.
Fig. 12 is a plan view of the battery case 50. A hinge mechanism 51 that can open and close the seat 23 is attached to the vehicle body front side of the seat base 29 fixed to the upper portion of the battery box 50. On the other hand, a seat fixing portion 38 driven by the wire rope 35 is provided on the upper surface of the battery case 50 on the vehicle body rear side. The battery box 50 is provided with a pair of storage recesses 54 in the vehicle width direction, and the storage recesses 54 are inserted from above and store a main battery B1 having a vertically long rectangular parallelepiped shape. A terminal 55 connected to a connection terminal provided at the bottom of the main battery B1 is embedded in a position near the outside in the vehicle width direction in the bottom 54a of each housing concave portion 54. A handle 52 that is operated when the main battery B1 is attached and detached is disposed between the left and right storage recesses 54.
Fig. 13 is a cross-sectional view along line XIII-XIII of fig. 2. The battery case 50 has a bottom portion provided with a pair of left and right protruding portions 53 for accommodating terminals 55 embedded in the bottom portion 54a of the accommodating recess 54 on the outer sides in the vehicle width direction. The pressure reducing regulator 80 is disposed in a space between the left and right protrusions 53. This makes it possible to effectively utilize the space, increase the position where the step-down regulator 80 is disposed, protect the step-down regulator 80 from stones or the like from below the vehicle body, and protect the side of the step-down regulator 80 with the protrusion 53. Further, since the traveling wind flowing under the low floor 25 is concentrated at a position close to the center of the vehicle body by the left and right projecting portions 53, the cooling effect of the down regulator 80 is also improved.
The form of the saddle-ride type vehicle, the shape or structure of the battery or the motor, the shape or structure of the seat or the battery box, the shape or structure of the cover member, the shape or structure of the PCU, the position or angle of arrangement of the PCU, the shape or structure of the junction box or the step-down regulator, the layout of each wire harness, and the like are not limited to the above-described embodiments, and various modifications are possible. For example, the PCU may be a type in which no cooling fin is provided. The arrangement of the high-voltage electrical components and the cover member of the present invention is not limited to the electric two-wheeled vehicle, and may be applied to a saddle-riding type three-wheeled vehicle or four-wheeled vehicle in which a main battery is housed under a seat.
Description of the reference numerals
1 electric bicycle (saddle type electric vehicle)
2 steering handle
22 slit
23 seat
25 Low bottom plate
40 cover part
41 opening
44 side wall
45 rear wall
45a recess
50 battery box
53 nose
54 receiving part
54a bottom of the receiving part
55 terminal
60 PCU (high voltage electric parts)
60a cooling fin
70 terminal box
80 step-down regulator
M motor
B1 Main battery (high-voltage battery)
B2 auxiliary battery (Low-voltage battery)
Axle of S rear wheel
WR rear wheel
Claims (10)
1. A saddle-ride type vehicle having a low floor (25) on which an occupant steps between a steering handle (2) and a seat (23), and driving rear Wheels (WR) by a motor (M), characterized in that,
A high-voltage battery (B1) for supplying electric power to the motor (M) is arranged below the seat (23),
a high-voltage electrical component (60) is disposed on the rear side of the high-voltage battery (B1) and on the front side of the vehicle body with respect to the axle (S) of the rear Wheel (WR).
2. The saddle-ride type electric vehicle according to claim 1,
a battery box (50) for storing the battery (B1) is arranged below the seat (23),
a seat under cover (24) as an exterior member is disposed on the outside of the battery box (50) in the vehicle width direction,
a slit (22) for introducing traveling wind is provided in the seat lower shell cover (24).
3. The saddle-ride type electric vehicle according to claim 2,
a cover member (40) is disposed behind the battery box (50), the cover member (40) including at least a rear wall (45) located on the rear side of the high-voltage electrical component (60) with respect to the vehicle body and a side wall (44) extending from the rear wall (45) toward the front of the vehicle body,
the rear wall (45) is provided with an opening (41) for allowing the high-voltage electrical component (60) to face the rear of the vehicle body.
4. The saddle-ride type electric vehicle according to claim 3,
the high-voltage electrical component (60) is a PCU having a plurality of cooling fins (60a) formed on the rear surface of the vehicle body and having a substantially rectangular shape when viewed from the side of the vehicle body,
The PCU (60) is arranged at a position which is inclined at the front upper part of the rear Wheel (WR) in a way that the upper side of the vehicle body is more towards the rear of the vehicle body than the lower side of the vehicle body.
5. The saddle-ride type electric vehicle according to claim 4,
a junction box (70) for collectively connecting high-voltage wiring is disposed below the PCU (60) and in front of the rear Wheel (WR).
6. The saddle-ride type electric vehicle according to claim 5,
a step-down regulator (80) for stepping down the supply current of the high-voltage battery (B1) is disposed below the battery box (50).
7. The saddle-ride type electric vehicle according to claim 6,
the battery box (50) is provided with a storage part (54) for storing two high-voltage batteries (B1) in parallel along the vehicle width direction,
two terminals (55) connected to the high-voltage battery (B1) are respectively arranged at positions on the outer side of the bottom (54a) of the housing part (54) in the vehicle width direction,
a pair of right and left protrusions (53) for receiving the terminals (55) are formed at the lower part of the battery case (50),
the pressure reducing regulator (80) is disposed between the pair of left and right protrusions (53).
8. The saddle-ride type electric vehicle according to any one of claims 3 to 6,
A recess (45a) that conforms to the shape of the rear Wheel (WR) is provided in the center of the rear wall (45) of the cover member (40) in the vehicle width direction.
9. The saddle-ride type electric vehicle according to claim 6 or 7,
a storage box (30) for storing a low-voltage battery (B2) is disposed below the low floor (25).
10. The saddle-ride type electric vehicle according to any one of claims 1 to 9,
the motor (M) is arranged at the right side or the left side in the vehicle width direction,
a wire harness (61) that extends from the high-voltage electrical component (60) and supplies electric power to the motor (M) has a portion that extends from a lower end of the high-voltage electrical component (60) toward an outside in the vehicle width direction on a side opposite to the position where the motor (M) is disposed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-079193 | 2018-04-17 | ||
| JP2018079193 | 2018-04-17 | ||
| PCT/JP2019/000224 WO2019202784A1 (en) | 2018-04-17 | 2019-01-08 | Straddle-type electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111989260A true CN111989260A (en) | 2020-11-24 |
| CN111989260B CN111989260B (en) | 2021-07-13 |
Family
ID=68240383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980026024.5A Active CN111989260B (en) | 2018-04-17 | 2019-01-08 | Saddle-ride type electric vehicle |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6990302B2 (en) |
| CN (1) | CN111989260B (en) |
| PH (1) | PH12020551706A1 (en) |
| WO (1) | WO2019202784A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7347166B2 (en) * | 2019-11-29 | 2023-09-20 | スズキ株式会社 | saddle type vehicle |
| JP7082997B2 (en) * | 2020-03-16 | 2022-06-09 | 本田技研工業株式会社 | Saddle-mounted electric tricycle |
| WO2023127117A1 (en) * | 2021-12-28 | 2023-07-06 | 本田技研工業株式会社 | Saddled vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| PH12020551706A1 (en) | 2021-07-19 |
| CN111989260B (en) | 2021-07-13 |
| JPWO2019202784A1 (en) | 2021-06-17 |
| JP6990302B2 (en) | 2022-01-14 |
| WO2019202784A1 (en) | 2019-10-24 |
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