WO2021205914A1

WO2021205914A1 - Control device drainage structure

Info

Publication number: WO2021205914A1
Application number: PCT/JP2021/013012
Authority: WO
Inventors: 菊香蔡; 金▲ぜん▼ ▲張▼; 慎司川隅
Original assignee: 本田技研工業株式会社
Priority date: 2020-04-10
Filing date: 2021-03-26
Publication date: 2021-10-14
Also published as: CN113511291B; JPWO2021205914A1; CN113511291A; JP7450021B2

Abstract

Provided is a control device drainage structure capable of increasing drainage performance for moisture which has adhered to a control device.　A control device drainage structure to be used in a control device (30) for controlling the power to be supplied from a battery (B) to a motor (M), wherein the control device (30) has a main body section (32) for storing an electronic component, and the upper surface section (34) of the main body section (32) is provided with grooves (46, 46a, 47, 47a, 48, 48a) which extend to the lateral edge section of the main body section (32). The floor sections of the grooves are angled so as to drop toward the lateral edge section of the main body section (32) from the center thereof. The grooves comprise a plurality of grooves oriented in different directions from one another. The grooves are formed so as to originate from the connection points (40a, 41a, 42a) of the wiring (40, 41, 42) which supplies power to the motor (M).

Description

Drainage structure of control device

The present invention relates to the drainage structure of the control device, and more particularly to the drainage structure of the control device applied to the control device that controls the electric power supplied to the motor.

Conventionally, it has been known to provide a control device for controlling the electric power supplied to the motor in an electric vehicle that obtains a driving force by supplying the electric power of the in-vehicle battery to the motor.

Patent Document 1 discloses a scooter-type electric motorcycle having a low-floor floor on which an occupant can rest his / her feet between the steering handle and the seat, in which a control device is housed in the lower part of the low-floor floor.

International Publication 2011/093279

Here, the control device that controls high-voltage electric power has a problem that the arrangement location is likely to be limited in order to avoid the adhesion of moisture due to rainwater, water splashes, and the like. In Patent Document 1, it has not been studied to increase the degree of freedom of the arrangement position of the control device by improving the drainage performance when moisture adheres to the control device.

An object of the present invention is to provide a drainage structure of a control device capable of solving the above-mentioned problems of the prior art and enhancing the drainage performance of water adhering to the control device.

In order to achieve the above object, the present invention relates to the drainage structure of the control device applied to the control device (30) for controlling the electric power supplied from the battery (B) to the motor (M). Has a main body (32) for accommodating electronic components, and a groove (46, 46a, 47,) reaching the side end of the main body (32) in the upper surface (34) of the main body (32). The first feature is that 47a, 48, 48a) are provided.

The second feature is that the bottom portion of the groove (46, 46a, 47, 47a, 48, 48a) has an inclination that descends from the central side of the main body portion (32) toward the side end portion. There is.

Further, the third feature is that the grooves (46, 46a, 47, 47a, 48, 48a) are composed of a plurality of grooves having different directions from each other.

Further, the groove (46, 46a, 47, 47a, 48, 48a) starts from the connection portion (40a, 41a, 42a) of the wiring (40, 41, 42) that supplies electric power to the motor (M). There is a fourth feature in that it is formed.

Further, the fifth feature is that the grooves (46, 46a, 47, 47a, 48, 48a) are formed so as not to communicate the connecting portions (40a, 41a, 42a) adjacent to each other. ..

The sixth feature is that the upper part of the groove (46, 46a, 47, 47a, 48, 48a) is covered with the lid member (31).

The seventh feature is that the control device (30) is attached to the saddle-mounted electric vehicle (1).

Further, the eighth feature is that at least a part of the grooves (46, 46a, 47, 47a, 48, 48a) is oriented along the vehicle width direction of the saddle-mounted electric vehicle (1). be.

Further, the control device (30) is tilted so that the upper surface portion (34) of the main body portion (32) is directed forward and upward in a state where the vehicle body of the saddle-mounted electric vehicle (1) is upright. The ninth feature is that at least a part of the grooves (46, 46a, 47, 47a, 48, 48a) is oriented forward and downward.

According to the first feature, in the drainage structure of the control device applied to the control device (30) that controls the electric power supplied from the battery (B) to the motor (M), the control device (30) is an electronic component. The main body (32) for accommodating the main body (32), and the groove (46, 46a, 47, 47a, 48, 48, Since 48a) is provided, the water adhering to the main body can be discharged to the outside of the main body through the groove. As a result, the drainage performance of the control device can be improved, and the degree of freedom of the arrangement location of the control device can be increased.

According to the second feature, the bottom portion of the groove (46, 46a, 47, 47a, 48, 48a) has an inclination downward from the central side of the main body portion (32) toward the side end portion. Therefore, the water that has entered the groove can be efficiently discharged to the outside of the main body.

According to the third feature, since the grooves (46, 46a, 47, 47a, 48, 48a) are composed of a plurality of grooves having different directions from each other, high drainage performance can be achieved regardless of the arrangement direction of the control device. Obtainable.

According to the fourth feature, the groove (46,46a, 47,47a, 48,48a) connects the wiring (40,41,42) that supplies electric power to the motor (M) (40a, 41a). , 42a), so that it is possible to prevent water from accumulating around the connection terminals of the wiring that supplies power to the motor.

According to the fifth feature, the grooves (46, 46a, 47, 47a, 48, 48a) are formed so as not to communicate the connecting portions (40a, 41a, 42a) adjacent to each other. It is possible to prevent the connection portions from short-circuiting due to the moisture that has entered the groove.

According to the sixth feature, since the upper part of the groove (46, 46a, 47, 47a, 48, 48a) is covered with the lid member (31), it becomes difficult for moisture to enter the upper surface portion of the control device.

According to the seventh feature, since the control device (30) is attached to the saddle-type electric vehicle (1), it is possible to improve the degree of freedom in attaching the control device to the saddle-type electric vehicle. Become.

According to the eighth feature, at least a part of the grooves (46,46a, 47,47a, 48,48a) is oriented along the vehicle width direction of the saddle-mounted electric vehicle (1). , Moisture is easily discharged when the saddle-mounted electric vehicle is stopped at the side stand, and moisture is easily discharged due to the centrifugal force when the vehicle body is banked and cornering is performed.

According to the ninth feature, in the control device (30), the upper surface portion (34) of the main body portion (32) is directed forward and upward in a state where the vehicle body of the saddle-mounted electric vehicle (1) is upright. Since the control device is arranged in an inclined posture so that at least a part of the grooves (46, 46a, 47, 47a, 48, 48a) is directed forward and downward, the control device is arranged in an inclined manner. By doing so, the drainage performance is further improved.

It is a left side view of the electric motorcycle which concerns on one Embodiment of this invention. It is a block diagram which shows PCU and its peripheral composition. FIG. 3 is a cross-sectional view taken along the line III-III of FIG. FIG. 6 is a sectional view taken along line IV-IV of FIG. It is a perspective view of PCU. It is a top view of PCU. It is a rear view of an electric motorcycle stopped at a side stand.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a left side view of the electric motorcycle 1 according to the embodiment of the present invention. The electric motorcycle 1 is a scooter-type saddle-mounted vehicle provided with a low-floor floor 12 on which an occupant rests his / her feet between the steering handle 3 and the seat 21. The body frame F of the electric two-wheeled vehicle 1 is a head pipe F1 that rotatably supports the steering stem 6, a main frame F2 extending rearward and downward from the head pipe F1, and curved rearward at the lower end portion of the main frame F2. It has a pair of left and right underframes F3 that extend, and a pair of left and right rear frames F4 that extend rearward and upward from the rear end of the underframe F3.

The steering handle 3 is attached to the upper part of the steering stem 6, and the bottom bridge 10 that supports the front fork 25 is fixed to the lower part of the steering stem 6. A front wheel WF is rotatably supported at the lower end of the front fork 25.

The pivot 16 provided at the rear end of the underframe F3 swingably supports the swing arm 17 that rotatably supports the rear wheel WR. The upper end of the swing arm 17 is supported by the vehicle body by the rear cushion 14. A side stand 15 is rotatably supported at a position below the rear cushion 14. In the present embodiment, the in-foil motor M housed in the wheel of the rear wheel WR is applied as the power source of the electric motorcycle 1.

A front cowl 7 that supports the headlight 9 is arranged in front of the head pipe F1, and a leg shield 8 that faces the feet of the occupant is arranged behind the head pipe F1. The center of the steering wheel 3 in the vehicle width direction is covered with a handle cover 5, and a pair of left and right rearview mirrors 2 are attached to the steering handle 3. The front fender 11 that covers the upper part of the front wheel WF is fixed to the bottom bridge 10, and the rear fender 18 that covers the upper part of the rear wheel WR is fixed to the swing arm 17.

A rear cowl 22 is arranged below the seat 21. A taillight device 19 is attached to the rear end of the rear cowl 22. The battery B that supplies electric power to the in-foil motor M is arranged in the lower part of the low floor floor 12. The PCU (power control unit) 30 as a control device for controlling the electric power supplied from the battery B to the in-foil motor M is arranged so as to straddle the left and right rear frames F4. A fuse box 20 is arranged above the rear of the PCU 30.

FIG. 2 is a block diagram showing the PCU 30 and its peripheral configuration. The electric motorcycle 1 has a PCU 30, a main control unit 100, a battery B, an accelerator device 120, a brake device 130, a rotation speed sensor 101, and a motor (in-wheel motor) M as a control system for adjusting the driving force of the rear wheel WR. .. The accelerator device 120 has an accelerator grip 121 and an accelerator detection unit 122. The brake device 130 has a brake lever 131 and a brake detection unit 132. The rotation speed sensor 101 is built in the motor M.

Battery B includes a plurality of battery modules and a battery ECU. The plurality of battery modules of the battery B are connected to the motor M via the PCU 30. The battery ECU of the battery B is connected to the main control unit 100. As a result, the main control unit 100 is given a charge amount of a plurality of battery modules from the battery ECU.

The accelerator device 120, the brake device 130, and the rotational speed sensor 101 are connected to the main control unit 100. The main control unit 100 includes, for example, a CPU and a memory or a microcomputer. When the accelerator grip 121 is operated by the driver, the accelerator detection unit 122 detects the operation amount of the accelerator grip 121 based on the unoperated state, and the detected operation amount is given to the main control unit 100.

Further, when the brake lever 131 is operated by the driver, the brake detection unit 132 detects the operation amount of the brake lever 131 based on the unoperated state, and the detected operation amount is given to the main control unit 100. .. The rotation speed sensor 101 detects the rotation speed of the motor M, and the detected rotation speed is given to the main control unit 100.

As described above, the main control unit 100 is given information such as the charge amount of the battery module, the operation amount of the accelerator grip 121, the operation amount of the brake lever 131, and the rotation speed of the motor M. Based on this information, the main control unit 100 performs charge / discharge control of the battery module and power conversion control of the PCU 30. For example, when the vehicle starts and accelerates based on the accelerator operation, the power of the battery module is supplied from the battery B to the PCU 30. Further, the main control unit 100 calculates the rotational force to be transmitted to the rear wheel WR as a command torque based on the given amount of operation of the accelerator grip 121, and gives the PCU 30 a control signal based on the command torque. The PCU 30 controls the electric power supplied from the battery B based on the control signal from the main control unit 100, and converts it into the electric power required to drive the rear wheel WR. As a result, the drive power converted by the PCU 30 is supplied to the motor M, and the rotational force of the motor M based on the drive power is transmitted to the rear wheel WR.

On the other hand, when the vehicle decelerates based on the brake operation, the motor M functions as a power generation device. In this case, the PCU 30 converts the regenerative power generated by the motor M into power suitable for charging the battery module and supplies the regenerative power to the battery module. As a result, the battery module is charged.

FIG. 3 is a sectional view taken along line III-III of FIG. Further, FIG. 4 is a sectional view taken along line IV-IV of FIG. A storage box 23 is arranged below the seat 21 and inside the rear cowl 22. The upper opening of the storage box 23 is covered with the bottom plate 21a of the openable and closable sheet 21. The PCU 30 is fixed so as to straddle the left and right rear frames F4, and its upper surface is substantially parallel to the rear frame F4 which is inclined backward upward when viewed from the side of the vehicle body.

FIG. 5 is a perspective view of the PCU 30. The PCU 30 has a main body portion 32 and a lid member 31 that covers the upper surface portion 34 of the main body portion 32. By attaching the lid member 31, moisture is less likely to adhere to the upper surface portion 34 of the body portion 32 and the connection portion of each wiring. Stays 38 for attaching to the rear frame F4 are provided at the left and right ends of the main body 32 in the vehicle width direction.

The minus wire 50 and the plus wire 51 of the battery B are fastened by bolts 45 to the positions on both sides of the upright portion 33 on the right side of the PCU 30 in the vehicle width direction. A first coupler 35, a second coupler 36, and a third coupler 37 for connecting a harness (not shown) are provided around the upright portion 33.

Then, at a position on the left side of the PCU 30 in the vehicle width direction, a U-phase wire 40, a V-phase wire 41, and a W-phase wire 42 for supplying electric power to the in-foil motor M are fastened by bolts 45, respectively. The head of the tightened bolt 45 is made to be substantially the same as the height of the upper surface portion 34 (illustrated pointillistic hatching portion) of the main body portion 32.

FIG. 6 is a plan view of the PCU 30. In this figure, the U-phase wire 40, the V-phase wire 41, the W-phase wire 42, the minus wire 50, and the plus wire 51 are removed. As described above, the upper surface portion 34 (illustrated pointillistic hatching portion) of the main body portion 32 is at substantially the same height as the head height of the bolt 45 connecting the U-phase wire 40, the V-phase wire 41, and the W-phase wire 42. It is set. That is, the connecting

portions

40a, 41a, 42a of the bolt 45 are one step lower than the upper surface portion 34 of the main body portion 32.

In the drainage structure of the PCU 30 according to the present embodiment, the water is collected starting from the

connection portions

40a, 41a, 42a so that the water does not accumulate in the

connection portions

40a, 41a, 42a, which is one step lower than the upper surface portion 34 of the main body portion 32. It is characterized in that a plurality of

grooves

46, 46a, 47, 47a, 48, 48a for discharging are provided.

Around the connecting portion 40a of the U-phase wire 40, a groove 46 that points rearward and upward and two grooves 46a that point to the left side in the vehicle width direction are provided. The bottom portions of the

grooves

46 and 46a are all shaped so as to be inclined so as to descend toward the side end portion of the main body portion 32. Further, around the connecting portion 42a of the W phase line 42, a groove 48 pointing forward and downward and two grooves 48a pointing to the left side in the vehicle width direction are provided. The bottom portions of the

grooves

46 and 46a are all shaped so as to be inclined so as to descend toward the side end portion of the main body portion 32. Further, around the connecting portion 41a of the V-phase wire 41, two grooves 47 pointing to the right side in the vehicle width direction and two grooves 47a pointing to the left side in the vehicle width direction are provided. The bottom portions of the

grooves

47 and 47a are each inclined so as to descend toward the side end portion of the main body portion 32. Further, the lid member 31 has a lid upper surface portion 31a that covers the upper surface portion 34 of the main body portion 32 from above, and a lid side surface portion 31b that covers the upper surface portion 34 from the side. There is a gap between the side end portion of the main body portion 32 and the side end portion 31b of the lid, and moisture can pass therethrough.

According to the drainage structure of the control device according to the present embodiment, the upper surface portion 34 of the main body portion 32 is provided with

grooves

46, 46a, 47, 47a, 48, 48a reaching the side ends of the main body portion 32. Moisture adhering to the portion can be discharged to the outside of the main body portion through the groove. As a result, the drainage performance of the PCU 30 can be improved, and the degree of freedom of the arrangement location of the PCU 30 can be increased.

Further, since the bottom portion of the groove has an inclination that descends from the central side of the main body portion 32 toward the side end portion, the moisture that has entered the groove can be efficiently discharged to the outside of the main body portion 32. .. Further, since the grooves are composed of a plurality of grooves having different directions from each other, high drainage performance can be obtained regardless of the arrangement direction of the PCU 30. Further, since the groove is formed starting from the

connection portions

40a, 41a, 42a of the U-phase wire 40, the V-phase wire 41, and the W-phase wire 42 that supply electric power to the motor M, the electric power is supplied to the motor M. It is possible to prevent water from accumulating around the

connection portions

40a, 41a, 42a of the wiring. Further, since the groove is formed so as not to communicate the connecting

portions

40a, 41a, 42a adjacent to each other, it is possible to prevent the connecting portions from being short-circuited due to the moisture entering the groove.

FIG. 7 is a rear view of the electric motorcycle 1 stopped at the side stand 15. In the present embodiment, since the main body 32 of the PCU 30 is provided with a plurality of grooves, good drainage is performed even when the vehicle body is upright, but when the vehicle is stopped using the side stand 15, the left side in the vehicle width direction is provided. Moisture is easily drained from the

grooves

46a, 47a, 48a side facing the direction. In addition, when the vehicle body is banked and cornering is performed, moisture is easily discharged due to centrifugal force. Further, the PCU 30 is arranged in an inclined posture so that the upper surface portion 34 of the main body portion 32 faces forward and upward when the vehicle body of the electric motorcycle 1 is upright, and at least a part of the groove is directed forward and downward. By doing so, the drainage performance is further improved.

The form of the electric motorcycle, the shape and structure of the PCU, the mounting structure of the PCU on the vehicle body, the shape and number of grooves formed on the upper surface of the PCU, etc. are not limited to the above embodiments and can be changed in various ways. be. The drainage structure of the control device according to the present invention is not limited to electric motorcycles, and can be applied to PCUs used in various electric vehicles including saddle-type electric tricycles.

1 ... Electric motorcycle, 30 ... PCU (control device), 31 ... Lid member, 32 ... Main body, 34 ... Top surface, 40, 41, 42 ... Wiring, 40a, 41a, 42a ... Connection, 46, 46a, 47 , 47a, 48, 48a ... Groove, B ... Battery, M ... In-foil motor (motor)

Claims

In the drainage structure of the control device applied to the control device (30) that controls the electric power supplied from the battery (B) to the motor (M).
The control device (30) has a main body portion (32) for accommodating electronic components, and has a main body portion (32).
The upper surface portion (34) of the main body portion (32) is provided with a groove (46, 46a, 47, 47a, 48, 48a) reaching the side end portion of the main body portion (32). Drainage structure of the control device.
Claim 1 is characterized in that the bottom portion of the groove (46, 46a, 47, 47a, 48, 48a) has an inclination downward from the central side of the main body portion (32) toward the side end portion. The drainage structure of the control device described in.
The drainage structure of the control device according to claim 1 or 2, wherein the grooves (46, 46a, 47, 47a, 48, 48a) are composed of a plurality of grooves having different directions from each other.
The grooves (46, 46a, 47, 47a, 48, 48a) are formed starting from the connection portion (40a, 41a, 42a) of the wiring (40, 41, 42) that supplies power to the motor (M). The drainage structure of the control device according to any one of claims 1 to 3, wherein the drainage structure is characterized.
4. The fourth aspect of claim 4, wherein the grooves (46, 46a, 47, 47a, 48, 48a) are formed so as not to communicate the connecting portions (40a, 41a, 42a) adjacent to each other. Drainage structure of the control device.
The drainage structure of the control device according to any one of claims 1 to 4, wherein the upper portion of the groove (46, 46a, 47, 47a, 48, 48a) is covered with the lid member (31).
The drainage structure of the control device according to any one of claims 1 to 5, wherein the control device (30) is attached to a saddle-mounted electric vehicle (1).
6. The sixth aspect of the invention is characterized in that at least a part of the grooves (46, 46a, 47, 47a, 48, 48a) is oriented along the vehicle width direction of the saddle-mounted electric vehicle (1). The drainage structure of the described controller.
The control device (30) is arranged in an inclined posture so that the upper surface portion (34) of the main body portion (32) is directed forward and upward in a state where the vehicle body of the saddle-mounted electric vehicle (1) is upright. Has been
The drainage structure of the control device according to claim 7 or 8, wherein at least a part of the grooves (46, 46a, 47, 47a, 48, 48a) is directed forward and downward.