JPH1056702A - System and plate for charging motor-driven vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system and plate for charging motor-driven vehicle by which the battery of a motor-driven vehicle can be easily charged when the vehicle is simply parked at a prescribed position. SOLUTION: A charging system 10 is constituted of a motor-driven vehicle and a charging plate 20. The vehicle is provided with a stand 52 for fixing the vehicle and/or preventing the overturning of the vehicle and the stand 52 is provided with contacts 42 and 42a for charging at the part of the stand 52 which comes into contact with the ground surface when the vehicle is parked. The contacts 42 and 42a are electrically connected to the input contacts 46 and 46a of a battery relay 40. The plate 20 is installed to a parking lot for motor-driven vehicle and provided with feeding contacts 21 and 21a at positions where the contacts 42 and 42a of the stand 52 come into contact with the plate 20. The contacts 21 and 21a are connected to a power source, such as an AC power source, etc. The contacts 21 and 21a of the plate 20 are covered with pressure sensitive rubber 24 according to need.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging system and a charging plate for charging a battery in an electric vehicle such as a bicycle with an electric motor, which is driven or assisted by an electric motor.

[0002]

2. Description of the Related Art In recent years, an electric motor has been attached to a bicycle,
A so-called "motor-equipped bicycle" has been put to practical use for assisting a user to depress a pedal. The electric motor is driven by power supply from a battery mounted on a bicycle equipped with an electric motor. When the battery is exhausted, it needs to be charged. Conventionally, to charge the battery of this type of device, once remove the battery from the bicycle with an electric motor, connect the battery to a household power supply (AC 100 V) with a cord etc. equipped with a charging circuit, and charge the battery. The battery had to be attached to the bicycle with the electric motor again.

[0003]

However, removing and recharging a heavy battery is labor intensive and time consuming.

[0004] It is an object of the present invention to provide a charging system and a charging plate capable of easily performing charging simply by parking or parking an electric vehicle at a predetermined position.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an electric vehicle which charges a battery (40) mounted on the electric vehicle which obtains a driving force or an auxiliary driving force by rotation of a motor. In the charging system, the stand (52) for fixing and / or preventing the electric vehicle from falling over is placed on the charging plate (20), so that the power supply contacts (21) ( 21a) is the battery (4
0) is electrically connected. On the stand (52) of the electric vehicle,
Charging contact (42) at the part that touches the ground when parking or parking
(42a), the charging contact (42) (42a) is a battery (40)
Can be electrically connected to the input contacts (46) and (46a). The charging plate (20) is provided at the parking or parking place of the electric vehicle, and is used when the electric vehicle is parked or parked.
Power supply contacts (21) (21a) are provided at positions where the charging contacts (42) (42a) of (52) abut. The power supply contacts 21 and 21a are connected to a power supply such as an AC power supply. The power supply contacts (21) (21a) of the charging plate (20) are covered with a pressure-sensitive rubber (24) as necessary.

The charging plate (20) of the present invention is a plate which is installed or buried in a parking or bicycle parking place of an electric vehicle.
(23), a power supply contact (21) (21a) formed on the upper surface of the plate (23) and electrically connected to a power supply such as an AC power supply,
A pressure-sensitive rubber (24) is provided to cover the upper surfaces of the power supply contacts (21, 21a). Further, the plate (23) is provided with a charging circuit (6), and the power supply contacts (21) (21a) are electrically connected to a power source such as an AC power source via the charging circuit (6).

[0007]

In the charging system (10) of the present invention, the charging contact (42) (42a) of the stand (52) is connected to the power supply contact (21) (21a) of the charging plate (20). By simply parking or parking the vehicle in contact with the battery, the charging contacts (42) (42a) and the power supply contacts (21) (21a) are electrically connected, and the battery (40) is connected via these contacts. Is charged. Therefore,
There is no need to remove the battery (40) when charging. Also,
Connect the power supply contacts (21) and (21a) of the charging plate (20) with pressure-sensitive rubber.
When covered with (24), the power supply contacts (21) and (21a) can be protected from rain, dust, etc., and when the pressure-sensitive rubber (24) is not compressed, the resistance value is several kΩ or more. Because of the high degree, there is no conductivity, and short circuit between the power supply contacts (21) (21a) due to moisture or the like can be prevented. When the stand (52) is placed on the charging plate (20), the pressure-sensitive rubber (24) is compressed by the weight of the electric vehicle, and the resistance value of the compressed portion is reduced to about several ohms, so that it becomes a conductive material. When charging, pressure sensitive rubber (24)
Charging will not be disturbed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is not limited to a bicycle with an electric motor, but can be applied to, for example, an electric motorcycle.

The pressure-sensitive rubber used in the present invention is a synthetic rubber containing a large amount of carbon particles. In a non-compressed state, the distance between the carbon particles is large, and the pressure-sensitive rubber is energized in the same manner as ordinary synthetic rubber. Almost no resistance (resistance kΩ ~
(Several tens of MΩ) is a synthetic rubber that becomes a current-carrying material when the compressed carbon particles approach or touch each other when compressed.

[0010] The charging plate (20) can be connected to a single-phase or three-phase AC power supply, a DC power supply, or the like. Further, a solar cell may be used as a power source.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A desired number of charging plates (20) can be buried or placed on the floor of a bicycle parking space of an electric motor-equipped bicycle (50) at home, work, around a station, or the like. As shown in FIGS. 1 to 3, the charging plate (20) has two plate-like power supply contacts (21) and (21a) in a concave portion formed on the upper surface of the non-conductive plate (23). Are insulated from each other,
The upper surface of each power supply contact (21) (21a) is covered with a pressure-sensitive rubber (24). The charging circuit (6) is provided inside the plate (23).
As the charging circuit (6), a known circuit can be used, and an example is shown in FIG. The charging circuit (6) includes a primary circuit having input terminals (61) and (61a) connected to a 100V AC power supply, and a secondary circuit having output terminals (61c) and (61d) connecting the transformer (60). Connected via. The primary side circuit has input terminals (61) (61
a), noise filter (62), input rectification smoothing circuit (63), PW
It comprises an M control circuit (64) and a power FET (65). The secondary circuit includes a secondary rectifier circuit (66), a current switch (67), and output terminals (61c) (61d).
The output terminals (61c) (61d) are connected to the power supply terminals (21) (21a). The supply voltage to the current switch (67) is fed back to the PWM control circuit (64) by the photocoupler (68) and is controlled to be constant. Also current switch
(67) and a charging monitoring control circuit (69)
It measures the voltage of the battery (40), stops charging from the change, and prevents overcharging. Pressure-sensitive rubber (24)
Has a resistance of 20 to 30M in the uncompressed state
About Ω (see FIG. 3).

Next, the bicycle with an electric motor (50) will be described. An electric motor-equipped bicycle (50) is an electric motor (not shown) connected to a drive system of a rear wheel (54) via a speed reduction mechanism or the like.
Equipped. The electric motor receives power from a battery (40) mounted on the bicycle (50), and drives with a torque corresponding to a stepping force of a user's pedal to rotate the rear wheel (54),
It is a bicycle that assists the pedal operation of the user.

The electric motor-equipped bicycle (50) is shown in FIGS.
As shown in (2), when the stand (52) provided on the rear wheel axle (55) is set almost vertically, the bicycle can be parked. The stand (52) is formed by bending a hollow pipe into a substantially U-shape, sandwiching the rear wheel (54), and both ends pivotally supported by a rear wheel shaft (55). The bends on both sides of the lower part of the stand (52) are swelled downward and outward to increase stability when parking the bicycle.
Charging contacts (42) and (42a) are provided at portions where (52) comes into contact with the ground when parking the bicycle. The stand (52) and the charging contacts (42) (42a) are insulated by rubber coating or the like, and are connected to a battery (described later) via wires (44) and (44) provided in a hollow pipe of the stand (52). It is connected to the input contacts (46) and (46a) of (40).

As shown in FIG. 1, the battery (40) is supported by a frame (57) of the bicycle (50), and as shown in FIG. 4, a charging contact (42) provided on a stand (52). It has a charging input contact (46) (46a) connected to (42a) and output contacts (47) (47a) connected to the electric motor. Input contacts (4
6) A diode is connected to (46a) and the input contact
(46) Prevent discharge from (46a).

Using the charging plate (20) having the above structure and a charging system (10) including a bicycle (50) with an electric motor,
The battery (40) of the bicycle (50) with an electric motor is charged. To perform charging, the stand (52) of the bicycle with an electric motor (50) is set up, and as shown in FIGS. 1 and 2, the charging contacts (42) and (42a) supply power to the charging plate (20). Contacts
(21) It is only necessary to park the bicycle (50) right above (21a). Charging contacts (42) (42a) and power contacts (21) (21a)
When the pressure-sensitive rubber (24) present between itself and the bicycle (50) is compressed by its own weight, the resistance value of the compressed part decreases to several Ω, and the charging contacts (42) (42a) and the power supply The contact points (21) and (21a) are electrically connected to charge the battery (40).
When the charge monitoring control circuit (69) detects the completion of the charging of the battery (40), the charging ends. In order to use the bicycle with an electric motor (50), it is sufficient to move the stand (52) to a substantially horizontal position before riding the bicycle, as in a normal bicycle. Stand (52)
When the is removed from the charging plate (20), the electrical connection between the stand (52) and the charging plate (20) is disconnected, and the pressure-sensitive rubber (2
The compression of 4) is released, and the resistance value returns to 20 to 30 MΩ.

A plurality of charging plates (20) can be arranged in parallel according to the number of bicycles with an electric motor.
In the above embodiment, the charging circuit (6) is
Although provided on the (20) side, a charging circuit may be provided on the bicycle side with the electric motor. Connect the charging circuit (6) to the charging plate (2
When provided in (0), the configuration of the bicycle with an electric motor can be simplified. The battery (40) may be made detachable in addition to the above-described charging method in a state where the battery is attached to the bicycle, so that conventional charging can be performed.

[Brief description of the drawings]

FIG. 1 is a rear side view of a bicycle shown in a diagram showing a charging system including a bicycle with an electric motor and a charging plate.

FIG. 2 is a rear view of FIG.

FIG. 3 is a rear view of the charging system before and after charging.

FIG. 4 is a block diagram illustrating an example of a charging circuit.

[Explanation of symbols]

 (10) Charging system (20) Charging plate (21) Power supply contact (24) Pressure sensitive rubber (40) Battery (50) Bicycle with electric motor

Claims (5)

[Claims] An electric vehicle charging system for charging a battery (40) mounted on an electric vehicle that obtains a driving force or an auxiliary driving force by rotation of a motor, for fixing the electric vehicle and / or for preventing the electric vehicle from tipping over. By placing the stand (52) on the charging plate (20), the power supply contacts (21) and (21a) of the charging plate (20) are electrically connected to the battery (40). A charging system for an electric vehicle. 2. A stand (52) of an electric vehicle is provided with charging contacts (42) (42a) at a portion that comes into contact with the ground when parking or parking a bicycle, and the charging contacts (42) (42a) are The charging plate (20) is electrically connected to the input contacts (46) and (46a) of the battery (40) .The charging plate (20) is provided at a parking or parking place for the electric vehicle. (52)
Power supply contact (2) at the position where the charging contacts (42) (42a) of the
1) (21a), the power supply contacts (21) and (21a) are connected to a power source such as an AC power source, and the electric vehicle is charged by the charging contacts (42) and (42a) of the stand (52). When the vehicle is parked or parked so as to contact the power supply contacts (21) (21a) of the charging plate (20), the charging contacts (42) (42a) and the power supply contacts (21) (21a) are electrically connected. The charging system for an electric vehicle according to claim 1, wherein the battery is connected to the battery and the battery is charged through the contacts. 3. A power supply contact (21) (2) of a charging plate (20).
The charging system for an electric vehicle according to claim 1 or 2, wherein 1a) is covered with a pressure-sensitive rubber (24). 4. A plate (23) installed or buried in a parking or parking place of an electric vehicle, and a power supply contact formed on an upper surface of the plate (23) and electrically connected to a power supply such as an AC power supply. (21) A charging plate comprising (21a) and a pressure-sensitive rubber (24) covering the upper surfaces of the power supply contacts (21) (21a). 5. The plate (23) includes a charging circuit (6), and the power supply contacts (21) (21a) are electrically connected to a power supply such as an AC power supply via the charging circuit (6). The charging plate according to claim 4, wherein: