JP2003054287A - Electric-motor car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric-motor car which displays traveling history information of an external memory on a display means by operation of a driver so that the driver can refer to and use the information easily. SOLUTION: On a panel part, an LED display device 34 and a liquid crystal display device 33 for displaying battery remaining quantity, travel distance, total travel distance and the number of charging times stored in the external memory 31 are arranged. A microcomputer 30 for information display control records information in the external memory 31, reads out the stored information and executes predetermined processing. Processing results of the microcomputer 30 are put out to a voice output IC 32, the liquid crystal display device output 33 and the LED 34, and the output of the voice output IC 32 is announced in voice by a speaker 35. Display contents are updated every time a data output SW 36 connected to the microcomputer 30 is pressed. Also, the information concerned stored in the external memory 31 is cleared every time a clear SW 37 is pressed and made ready for the next memory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vehicle capable of confirming travel history information and enabling safe driving even when the information system is damaged.

[0002]

2. Description of the Related Art In recent years, electric vehicles have been widely applied to consumer products such as golf carts, electric chairs for the elderly and people with disabilities, and electric four-wheel vehicles. As an example thereof, an electric four-wheel vehicle developed by the present applicant will be described as an example with reference to FIGS. 1 and 2.

FIG. 1 is an overall side view of an electric four-wheeled vehicle, and FIG. 2 is an overall top view of the same. The main body 1 of an electric four-wheeled vehicle is a driving wheel that is rotatably driven by a motor, which will be described later, to the left and right of the rear part, that is, a rear wheel 2, and left and right steering wheels that are rotatably provided and steered at the front part. That is, the front wheel 3 is provided.
The main body 1 is provided with a loop-shaped handle 4 at the upper end of a handle shaft (not shown) connected to the front wheel 2.

A rotatable seat 5 is provided at the rear part of the main body 1, and the seat 5 has an armrest 7 and a rotatable lever 6 at its lower portion, and the seat 5 can be rotated upward. The seat 5 can be fixed at the center and left and right so that the seat 5 can be fixed.

A front cowl 8 made of resin is provided on the front portion of the main body 1 formed above the front wheel 2 below the handle 4, and the front cowl 8 has an upper portion for accommodating small items. There are 9 open cages.

A rear cover 10 is provided behind the body 1 and below the seat 5, and the rear cover 10 covers a battery, a control box and the like. Further, the rear cover 10 forms a rear fender 11 for covering the rear wheel 2.

Indicators 12 are provided on the left and right of the front cowl 8.
Is provided, that is, it is a turn signal, and the turn signal 12 is blinked by the operation of the user, and it is possible to inform the surrounding people and the car of the turning direction.

A floor 13 on which the user puts his / her foot on the seat 5 is provided between the front wheel 3 and the rear wheel 2, and the floor 13 extends below the front cowl 8. Front wing 14 is formed on the right and left sides of the front wheel 3 so as to bulge upward and cover the front wheel 3.

A panel portion 15 connects the inside of the loop of the handle 4 to the front and back, and an alarm switch 16 for smoothing the horn and a blinker for blinking the turn signal 12 to the left and right are provided on the panel portion 15. Turn signal switch 1
7 is provided. When the turn signal switch 17 is turned on, the left or right turn signal blinks, and the turn signal is automatically turned off after a predetermined time has elapsed.

Reference numeral 18 is a changeover switch for changing the traveling direction, and reference numeral 19 is a battery residual quantity indicator lamp composed of a plurality of LEDs. Reference numeral 20 denotes an emergency stop switch that stops when pressed, and the emergency stop switch 20 can be pressed not only by the user but also by people around him. Furthermore, 2
Reference numeral 1 denotes a speed adjusting knob for adjusting the maximum speed, and the speed adjusting knob 21 can freely change between 2 km / h and 6 km / h.

Reference numeral 22 denotes an accelerator lever which is urged upward in the handle 4 and can be pressed downward to adjust the speed. The accelerator lever 22 is connected by a shaft, and the left and right are interlocked. The speed can be adjusted with the speed instructed by the speed adjustment knob 21 as the upper limit.

Then, when the target speed is set by the driver's accelerator operation, the drive mode is set, and the control circuit of the drive device controls with a duty to generate a corresponding drive force for acceleration operation. When the actual speed exceeds the target speed, a predetermined threshold is provided to enter the braking mode, and deceleration is performed by controlling with a duty that generates a predetermined braking force in dynamic braking. While this operation is being repeated, safe operation is performed at the target speed.

In such an electric vehicle, in addition to the memory of the main microcomputer for controlling the entire driving operation,
An external memory for storing the number of times of charging, total mileage, unit mileage is provided, and an external memory for storing volume data for determining the maximum speed, accelerator volume data, voltage / current value correction data, etc. is provided. There was also a device that uses an external memory to absorb electrical variations and electrical errors. Then, these data are serially communicated with the external memory and are sequentially stored in the external memory.

[0014]

As described above, in the conventional electric vehicle having the external memory, the stored information in the memory is used by the service person for reference and cannot be easily used by the driver. In order to
The driver could not refer to or use the information because it required a special operation and a special device that only the service person could know. In addition, if the external memory is damaged or the communication circuit for exchanging signals is hindered and communication is not possible, the vehicle may be unable to travel even if the travel is not directly hindered.

Therefore, according to the present invention, the driver can know the traveling distance and the number of times of charging, so that the battery life can be grasped and the remaining traveling distance can be predicted. Further, the external memory can be damaged or communication cannot be performed. It is an object of the present invention to provide an easy-to-use electric vehicle that can continue to run even if a problem occurs.

[0016]

In order to solve the above problems, an electric vehicle according to claim 1 of the present invention is an accelerator that can be operated by a driver, and a control in which a target speed is set by operating the accelerator. In an electric vehicle including a circuit, a drive device driven by the control circuit, and a braking device that brakes the drive device, the electric vehicle has an external memory for storing a travel history, and means for notifying the driver of the stored information. It is configured so that the driver can refer to it.

In this way, although the stored information in the conventional memory can be referred and used by the service person only for maintenance, the driver is informed of the traveling history information as the stored information in the external memory by the operation of the driver. It can be displayed by means, and the driver can easily refer to the information.
Can be used.

An electric vehicle according to a second aspect of the present invention is an accelerator operable by a driver, a control circuit for setting a target speed by operating the accelerator, a drive device driven by the control circuit, In an electric vehicle equipped with a braking device for braking a drive device, the vehicle has an external memory for storing a traveling history consisting of the number of times the battery is charged, the total traveling distance, and the traveling distance per unit traveling, and the stored information is provided to the driver. It is configured so that the driver can refer to the information by means.

In this way, by the operation of the driver, the battery remaining amount, the traveling distance, the total traveling distance, and the traveling history information of the number of times of charging as the storage information of the external memory can be displayed by the means for informing the driver. Can easily refer to and use the information.

An electric vehicle according to a third aspect of the present invention includes an accelerator that can be operated by a driver, a control circuit that sets a target speed by operating the accelerator, a drive device that is driven by the control circuit, An electric vehicle equipped with a braking device for braking a drive device has an external memory for storing a traveling history, and a driver can refer to the stored information by voice means.

In this way, the driver's operation allows the driver to be notified of the battery remaining amount, the traveling distance, the total traveling distance, and the traveling history information such as the number of times of charging as the information stored in the external memory, by the speaker which is a voice means. The driver can easily refer to and use the information.

An electric vehicle according to claim 4 of the present invention is an accelerator operable by a driver, a control circuit in which a target speed is set by operating the accelerator, a drive device driven by the control circuit, An electric vehicle equipped with a braking device for braking a drive device has an external memory for storing a traveling history, and the driver can refer to the stored information by the liquid crystal display means.

In this way, the driver's operation displays the battery remaining amount, the traveling distance, the total traveling distance, and the traveling history information such as the number of times of charging as the storage information of the external memory to the driver by the liquid crystal display device arranged in the panel section. The driver can easily refer to and use the information.

An electric vehicle according to a fifth aspect of the present invention includes an accelerator operable by a driver, a control circuit for setting a target speed by operating the accelerator, a drive device driven by the control circuit, An electric vehicle including a braking device that brakes a drive device has an external memory that stores a travel history, and a driver can refer to the stored information by an LED display means.

In this way, by the driver's operation, the battery remaining amount, the traveling distance, the total traveling distance, and the traveling history information such as the number of times of charging as the storage information of the external memory are displayed to the driver by the LED display means arranged on the panel section. You can
The driver can easily refer to and use the information.

An electric vehicle according to a sixth aspect of the present invention includes an accelerator operable by a driver, a control circuit for setting a target speed by operating the accelerator, a drive device driven by the control circuit, In an electric vehicle equipped with a braking device for braking a drive device, an electric vehicle having an external memory for storing travel history and driving information, and means for maintaining a minimum travel even if the external memory is damaged or a communication error occurs An electric vehicle characterized by having. As configured.

In this way, safe running can be continued even if the external memory in which the information used for absorbing mechanical variations and electrical errors is stored is damaged or communication with the external memory becomes impossible. Can be

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Although the electric vehicle of the present invention can be applied to various uses, an embodiment applied to an electric four-wheel vehicle will be described below. The main configuration of an electric four-wheeled vehicle is shown in FIGS.
Since it is the same as the electric four-wheeled vehicle shown in FIG. 2, its detailed description is omitted here. Although not shown in FIG. 2, the LED for displaying the battery remaining amount, the mileage, the total mileage, and the number of times of charging is replaced by the LED 19 on the panel unit 15.
The display device 34 and the liquid crystal display device 33 are arranged.

Next, an information display control circuit for making it possible for the driver to refer to the stored information in the external memory storing the traveling history will be described with reference to FIG. The information display control microcomputer 30 records information in the external memory 31 and reads the stored information to perform the required arithmetic processing.

The processing result of the microcomputer 30 is a voice output IC.
32, liquid crystal display device output 33, output to LED34,
The output of the voice output IC 32 is notified by voice through the speaker 35. The microcomputer 30 has a data output SW 36 and a clear SW 37, and the displayed contents are updated each time the data output SW 36 is pressed. Also, every time the clear SW 37 is pressed, the corresponding information stored in the external memory 31 is cleared and prepared for the next storage. These liquid crystal display devices 3
3. The LED display device 34 and the speaker 35 serve as means for informing the driver.

The microcomputer 30 is an information display control microcomputer which is connected to an external memory 31 and exchanges information with each other by serial communication.
Inputs the number of times the battery has been charged, the total travel distance, and the travel distance per unit travel at predetermined time intervals, and outputs the information to the external memory 31 as a signal. Then, when it is input and stored in the external memory 31, a signal to the effect that it has been stored is input to the microcomputer 30, and the operation for storing once is completed.
This is done every predetermined time.

The external memory 31 stores the battery remaining amount, the distance traveled once, the total distance traveled and the number of times of charging transmitted from the microcomputer 30, and the stored information is updated as the electric vehicle is driven. It External memory 31 ports 5
7 and ports 1 to 3 of the microcomputer 30 are connected, and reading and writing are performed by MDAT and MCLK of the microcomputer 30. Outputs of the ports 4 to 10 of the microcomputer 30 are input to the liquid crystal display device 33, outputs of the ports 14 and 15 are input to the audio output IC 32, and outputs of the ports 16 to 20 are LEDs.
It is input to the display device 34. A clear SW 37 is connected to the port 12 and a data output SW is connected to the port 13.
36 is connected.

With such a structure, if the driver presses the data output SW 36, the output of the voice output IC 32 is, for example, when the electric vehicle is powered on, whether the vehicle is stopped or running. As shown in FIG. 4, by the voice from the speaker 35, the current mileage is informed that “the mileage is 25 kilometers”, and when the data output SW 36 is pressed, the “total mileage is 725 kilometers” is informed, When the data output SW 36 is further pressed, the “number of times of charging is 77 times” is sequentially notified. Then, by pressing the clear SW 37, the traveling distance and the number of times of charging this time are
It can be initialized.

When the driver presses the data output SW 36, the display of the liquid crystal display device 33 can be initialized by "mileage: 25 km clear SW" as shown in FIG.
Is displayed and then the data output SW 36 is pressed,
"Total mileage: 725 km" is displayed, and when the data output SW36 is pressed, "Number of times of charging: 77 times It can be initialized with the clear SW." Is displayed.

The display of the LED display device 34 is LE
The contents of the reference information are displayed by turning on and off the D column. That is, regarding the traveling distance, 0 to 5 in the lighting order of the LED row.
km, -10km, -15km, -20km, 20km
It is set like ~. Also, regarding the total mileage,
The lighting order of the LED row is 0 to 200 km, to 400 km,
It is set as ~ 600 km, ~ 800 km, 800 km ~. Regarding the number of times of charging,
0 to 50 times, ~ 100 times, ~ 150 times, ~ 200 times, 2
It is set as 00 times to.

When the driver presses the data output SW 36, the battery remaining amount is displayed as shown in FIG. 6, and all the LEDs are turned on to be fully charged, and the remaining charge amount can be known from the number of turned on lights. . Then data output SW3
When 6 is pressed, for example, all LEDs are turned on and it is displayed that the current traveling distance is 25 km or more. When the data output SW 36 is pressed, 4 LEDs light up,
Display that the total mileage is 725 km. When the data output SW 36 is further pressed, two LEDs are lit to indicate that the number of times of charging is 77 times. Further, the current traveling distance and the number of times of charging can be initialized by pressing the clear SW 37.

As described above, although the stored information in the conventional memory can be referred and used by the service person only for maintenance, the driver outputs the data output SW36 and clear S.
By pressing W37, the stored information of the memory is displayed on the panel section, and the remaining amount of battery, mileage, total mileage, and number of times of charging are displayed by the LED display device 34, the liquid crystal display device 33, and the speaker 35. The driver can easily refer to and use the information.

Next, the function of ensuring the safe running of the electric vehicle will be described. The external memory 31 not only stores the remaining amount of charge, the unit traveled distance, the total traveled distance and the number of times of charging, but also stores volume data for determining the maximum speed, accelerator volume data, voltage / current value correction data and the like. Since it is used to absorb mechanical variations and electrical errors, it is necessary to allow safe driving to continue even if the external memory 31 is damaged or communication is lost.

The safe traveling control of the present invention will be described with reference to the control flow of FIG. The control sequence starts from step S0. In step S1, the travel data is read from the external memory, and in step S2, it is determined whether the travel data has failed to be read.

If it is determined in step S2 that the reading has not failed (No), in step 5, the data is loaded into the memory (RAM) of the main microcomputer (not shown) that controls the operation control of the electric vehicle, and the electric vehicle Used for operation control such as speed setting.

If it is determined in step S2 that the reading has failed (Yes), in the next step S3, a separate average provisional value is forcibly substituted into the memory (RAM) of the main microcomputer (not shown). In step S4, the maximum speed thereafter is limited, and the speed of the electric vehicle is set to, for example, 2 km / h to continue the operation control and ensure safe driving.

[0042]

As described above, in the electric vehicle according to the present invention, the stored information in the memory can be referred and used by the service person only for maintenance, but the driver outputs the data output SW and the clear SW. By pressing, the remaining battery information, mileage, total mileage, and the number of times of charging can be displayed by the LED display device, the liquid crystal display device, and the speaker in which the stored information in the memory is arranged on the panel unit. Persons can easily refer to and use the information.

Further, an external memory in which information used for absorbing mechanical variations such as volume data for determining the maximum speed, accelerator volume data, voltage / current value correction data and electrical errors is stored. It is possible to continue safe driving even in the event of damage or inability to communicate.

[Brief description of drawings]

FIG. 1 is an overall side view of an electric vehicle showing an embodiment of the present invention.

FIG. 2 is an overall top view of the electric vehicle of the present invention.

FIG. 3 is a control circuit for informing a driver of a traveling history of the electric vehicle of the present invention.

FIG. 4 is a diagram showing an example of a display for notifying a running history of the electric vehicle of the present invention by voice.

FIG. 5 is a diagram showing an example of a display for notifying a traveling history of the electric vehicle of the present invention by a liquid crystal display device.

FIG. 6 is a diagram showing an example of a display for notifying a traveling history of the electric vehicle of the present invention by an LED display device.

FIG. 7 is a flow chart of control for reading information from an external memory according to the present invention.

[Explanation of symbols]

1 Electric four-wheel vehicle body 2 rear wheels 3 front wheels 4 handles 5 sheets 8 front cowl 10 Rear cover 11 Rear fender 12 turn signals 13 floors 14 Front ender 15 panel section 20 Emergency stop switch 21 Speed adjustment knob 22 accelerator lever 30 Information display control microcomputer 31 External memory 32 voice output IC 33 Liquid crystal display device 34 LED display device 35 speakers 36 data output SW 37 Clear SW

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B62J 39/00 B62J 39/00 B

Claims (6)

[Claims] 1. An accelerator operable by a driver, and a control circuit for setting a target speed by operating the accelerator,
In an electric vehicle including a drive device driven by the control circuit and a braking device that brakes the drive device, the electric vehicle has an external memory for storing a travel history, and the driver notifies the stored information to the driver. An electric vehicle characterized by being able to refer to it. 2. The electric vehicle according to claim 1, wherein the traveling history information stored in the external memory is the number of times the battery is charged, the total traveling distance, and the traveling distance per unit traveling. 3. The electric vehicle according to claim 1, wherein the means for informing the driver of information that the driver can refer to is a voice. 4. The electric vehicle according to claim 1, wherein the means for informing the driver of the referenceable information to the driver is a liquid crystal display. 5. The LED display is provided as means for informing the driver of the referenceable information.
The electric car described in. 6. An accelerator operable by a driver, and a control circuit for setting a target speed by operating the accelerator,
An electric vehicle equipped with a drive device driven by the control circuit and a braking device for braking the drive device has an external memory for storing traveling history and driving information, and the external memory is damaged and a communication error occurs. An electric vehicle characterized by having means for maintaining a minimum amount of travel.