JP2002325301A - Deep discharge prevention device for electric vehicles - Google Patents

Abstract

(57) [Problem] To prevent deep discharge of an electric vehicle which can prevent deep discharge of a battery caused by leaving headlights or the like unattended when an auxiliary device such as a headlight is operated by an on / off manual switch. Provide equipment. A vehicle frame (2) having a seat (24) mounted thereon.
An electric vehicle equipped with a battery 10, a drive motor 7 for driving the rear wheel 8 using the battery 10 as a power source, and a headlight 25 (auxiliary equipment) using the battery 10 as a power source. A headlight switch 31 for detecting whether the light 25 is on, a seat switch 28 for detecting whether the driver is seated on the seat 24, and a motor for detecting the rotation speed of the drive motor 7. An encoder 29, a warning buzzer 30 that emits a warning sound, the headlight 25 is on, the rotation speed of the drive motor 7 is zero, and the driver
And a controller 15 (warning sound control means) that sounds the warning buzzer 30 when the vehicle is not seated on the vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vehicle, for example, an electric scooter equipped with a drive motor and an auxiliary device using a battery as a power source. The present invention relates to a deep discharge prevention device configured to prevent deep discharge.

[0002]

2. Description of the Related Art In recent years, an electric scooter in which wheels are driven by a drive motor using a Ni-based battery as a power source has attracted attention. In this type of electric scooter, the battery may be commonly used as a power source for a drive motor and auxiliary devices such as a headlight, a turn signal lamp, and a rear combination lamp. If such a battery is left, for example, with headlights or the like turned on, the battery may be deeply discharged and hurt.

In order to prevent such deep discharge, it is conceivable to mount an automatic power-off device for automatically turning off a headlight or the like by a controller or the like.

[0004]

However, when the above-mentioned auto power-off device is employed, it is necessary to operate a power switch of auxiliary devices by a controller. There is a possibility that the equipment may not operate, and there is a concern that the reliability is poor.

In order to avoid such a problem, it is preferable to operate the auxiliaries with a simple on / off manual switch. However, as described above, the problem of deep discharge due to unlit operation occurs. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when an accessory is turned on / off by a manual switch, an electric vehicle capable of preventing a deep discharge of a battery due to forgetting to turn off the accessory. It is an object of the present invention to provide a deep discharge prevention device.

[0007]

According to a first aspect of the present invention, there is provided a vehicle having a seat mounted thereon, a battery, a drive motor for driving wheels using the battery as a power source, and auxiliary devices using the battery as a power source. In an electric vehicle equipped with: an auxiliary device detecting means for detecting whether the auxiliary device is turned on, a seat detecting device for detecting whether a driver is seated on the seat, and the driving device Motor rotation speed detection means for detecting the rotation speed of the motor, warning means for emitting a warning sound,
A warning sound control means for generating a warning sound in the warning means when the rotation speed of the drive motor is zero and the driver is not seated in the seat when the auxiliary device is on. Features.

According to a second aspect of the present invention, in the first aspect, a stand rotatable between a use position in which the vehicle body stands alone and a storage position in which the vehicle body is stored during traveling, and the stand is in the use position or the storage position. And a stand position detecting means for detecting the position of the stand, wherein the warning sound control means further generates a warning sound when the stand is at the use position.

[0009]

According to the deep discharge prevention device of the first aspect of the present invention, when the auxiliary devices such as the headlights are turned on, the rotation of the drive motor is zero and the driver can move from the seat. Since a warning sound is generated when the driver leaves the vehicle, the driver can be alerted to forgetting to turn off the auxiliary devices, and it is possible to prevent a deep discharge of the battery caused by leaving the device alone.

According to the present invention, the operation of the accessories can be performed by a manual switch, and the problem that the accessories do not operate due to a failure of the controller when the conventional auto power-off device is provided can be avoided. Reliability can be improved.

According to the second aspect of the present invention, the warning sound is issued when the rotation of the drive motor is zero when the auxiliary devices are turned on, and when the driver leaves the seat and pulls out the stand to the use position. Since it is generated, it is possible to more reliably determine that the driver has left the vehicle with the auxiliary devices turned on, and it is possible to reliably prevent a deep discharge of the battery due to forgetting to turn off the auxiliary devices. That is, if the driver simply stands up from the seat while waiting at a traffic light, no alarm is issued, and an alarm sound is issued only when the vehicle stands up and stands away from the vehicle.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 3 are views for explaining a deep discharge prevention device for an electric scooter according to an embodiment of the present invention. FIG. 1 is a side view of the electric scooter, and FIG. FIG. 3 is a block diagram, and FIG. 3 is a flowchart for explaining the operation of the deep discharge prevention device.

In FIG. 1, reference numeral 1 denotes an electric scooter provided with a deep discharge prevention device. A body frame 2 of the electric scooter 1 has a lower end of one main pipe 2b diagonally downwardly connected to a head pipe 2a. Is connected to a pair of left and right side pipes 2c, 2c.
c and 2c are expanded to the left and right and bent substantially horizontally to form a footrest 2d, and the rear portion is inclined obliquely upward to form a seat rail portion 2e.

The head pipe 2 of the vehicle body frame 2
A front wheel 4 is pivotally supported at the lower end of a front fork 3 supported to be steerable left and right by a, and a steering handle 5 is fixed to the upper end.

The head pipe 2a and the main pipe 2
A front cover 20 is disposed on the outer peripheral portion of b.
The steering handle 5 is provided with a handle cover 21. A foot board 22 is provided on the footrest 2d, and a side cover 23 is provided on the seat rail 2e. The seat rail 2e
Saddle-type seat 24 on the upper surface of side cover 23 above
Is arranged.

The seat rail portion 2e of the vehicle body frame 2
, A power unit 6 is supported via a suspension bracket 2g so as to be vertically swingable. This power unit 6
Is integrally formed with a drive motor 7 arranged in the vehicle width direction and a transmission case 9 which extends rearward from the left end of the drive motor 7 and incorporates a continuously variable transmission mechanism for transmitting the rotation of the motor to the rear wheels 8. It is a unit swing type that is combined with each other.

A support bracket 2f is suspended from the footrest 2d of the body frame 2.
The battery 10 is mounted on the side of f. The battery 10 has a large number of rechargeable cells 11 made of Ni-Cd, Ni-MH, etc. connected in series and housed in a battery case 12.

At the rear end of the battery case 12, a cooling fan 13 is provided. Above the cooling fan 13, a charger 14 is provided. Further, the charger 1
Above 5, a controller 15 for controlling the output of the drive motor 7 is provided. This controller 15
Is configured to supply a current corresponding to the operation amount of the throttle grip of the steering handle 5 from the battery 10 to the drive motor 7.

A headlight 25 as auxiliary equipment and a turn signal lamp (not shown) are provided on the handle cover 21. A rear combination lamp (not shown) is provided on the rear end surface of the side cover 23. It is arranged.

The handle cover 21 is provided with a main switch 26 for activating the controller 15 and the like. The steering handle 5 has a headlight switch 31 for turning on and off the headlight 25, and an operation switch (not shown) for turning on a turn signal lamp.
Are arranged. By manually turning on the headlight switch 31 and the operation switch, the headlight 25, turn signal lamp, and rear combination lamp are turned on using the battery 10 as a power supply. The above headlight switch 3
The ON / OFF operation signal of 1 is input to the controller 15.

The body frame 2 is provided with a stand (not shown). The stand has a use position where the stand is in contact with the ground and supports the vehicle body in a self-standing state when parked, and a storage position where the stand is stored inside the vehicle body when traveling. It is rotatable between.
The stand is provided with a stand switch 27 as stand position detecting means for detecting whether the stand is at the use position or the storage position. The position detection signal is input to the controller 15.

The seat 24 is provided with a seat switch 28 serving as seat seating detection means which is turned on when the driver is seated on the seat and turned off when the driver is not seated. Input to the controller 15.

Further, the drive motor 7 is provided with a motor encoder 29 for detecting the number of revolutions of the motor, and the number of revolutions of the motor is inputted to the controller 15.

The controller 15 receives detection signals from the motor encoder 29, the stand switch 27, the sheet switch 28, and the headlight switch 31. When the headlight 25 is turned on, the rotation speed of the drive motor 7 is reduced. The warning buzzer 30 is set to sound when the number is zero, when the driver is not seated on the seat 24, and when the stand is in the use position. When the headlight 25 is turned on, the number of rotations of the drive motor 7 is zero, and the driver is not seated, the warning buzzer 30 sounds regardless of whether the stand is in the use position. Is also good.

The operation of the controller 15 will be described with reference to the flowchart of FIG. The rotation speed of the drive motor 7 is read together with the detection signal from each switch (steps S1 and S2), and it is determined whether the rotation speed of the drive motor 7 is zero, that is, whether the vehicle is stopped or running (step S1).
3). When the drive motor 7 is rotating, it is determined that the vehicle is running and the warning buzzer 30 is not sounded, and the process returns to the start (step S4).

When the rotational speed of the drive motor 7 is 0, it is determined that the motor is stopped, and the main switch 26 is turned off.
Is on, the headlight switch 31 is on, the seat switch 28 is off, and the stand switch 27 is on, it is determined that the driver has left the vehicle with the headlights 25 left on. And
The warning buzzer 30 sounds (steps S5 to S7). The main switch 26, the headlight switch 3
When any one of the sheet switch 28 and the stand switch 27 does not satisfy the above condition, a warning buzzer 30
Is not sounded.

As described above, according to the deep discharge prevention device of the present embodiment, when the headlight 25 is turned on, the drive motor 7 is stopped, and when the driver goes out of the stand and leaves the seat 24, a warning is issued. Since the buzzer 30 sounds, the driver can be alerted to forgetting to turn off the headlights 25, and it is possible to prevent the deep discharge of the battery 10 due to leaving the headlights alone, thereby improving the life.

Since the operation of turning on the headlights 25 is performed by a manual switch, it is possible to avoid the problem that the headlights do not turn on due to a failure of the controller when the conventional auto power-off device is provided, and the reliability is improved. Can be increased.

In the present embodiment, when the headlight 25 is turned on, the drive motor 7 is stopped, and the warning buzzer 30 is sounded when the stand is pulled out to the use position and the seat is separated from the seat. However, the position of the stand does not necessarily have to be included in the condition for generating a warning sound.

The warning buzzer sounds when the main switch is turned on. However, in a vehicle in which the headlight can be turned on and off regardless of the on / off position of the main switch, the main switch is turned on. , Off can be excluded from the above conditions for generating a warning sound.

[Brief description of the drawings]

FIG. 1 is a side view of an electric scooter provided with a deep discharge prevention device according to an embodiment of the present invention.

FIG. 2 is a block diagram of the deep discharge prevention device.

FIG. 3 is a flowchart for explaining the operation of the deep discharge prevention device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric scooter (electric vehicle) 2 Body frame 7 Drive motor 10 Battery 15 Controller (warning sound control means) 24 Seat 25 Headlight (auxiliary equipment) 27 Stand switch (Stand position detecting means) 28 Seat switch (Seat seating detecting means) )

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02J 7/00 302 H02J 7/00 302D F-term (Reference) 5G003 BA01 DA02 DA13 EA04 FA06 5H030 AA04 AS08 BB21 5H115 PA08 PC06 PG04 PG10 PI16 PI29 PI30 PO01 PU02 QA05 QN03 TO30 TR19 TU17 TZ07 UB05 UB07 UB11

Claims (2)

[Claims] 1. An electric vehicle, comprising: a vehicle having a seat mounted thereon, a battery, a drive motor for driving wheels using the battery as a power source, and auxiliary devices using the battery as a power source. Auxiliary device detecting means for detecting whether the device is on, seat detecting means for detecting whether the driver is seated on the seat, and motor speed detecting for detecting the speed of the drive motor. Means, a warning means for issuing a warning sound, and a warning sound for the warning means when the rotation speed of the drive motor is zero and the driver is not seated in the seat while the auxiliary device is on. And a warning sound control means for causing the electric vehicle to prevent deep discharge. 2. A stand according to claim 1, wherein the stand is rotatable between a use position in which the vehicle body is self-standing and a storage position in which the vehicle body is stored during traveling, and whether the stand is in the use position or the storage position. And a stand position detecting means for detecting the alarm sound, wherein the warning sound control means further generates a warning sound when the stand is at a use position.