KR100427489B1 - electric motor golf cart - Google Patents

Abstract

Provided is an electric golf cart equipped with a power generation / charging device and capable of selecting a “generator stop mode” and a “charge mode” in addition to the “normal running mode”.

It is determined whether or not it is in the charging mode (S21). In the charging mode, the generator driving engine is started (ON) (22). Next, it is judged whether or not the engine has started (23). When it is determined that the engine has started, the magnitude of the charging current (charge amount) is determined (24). If the charging current is large, it is determined that charging is still necessary. If the charging current is small, it is determined that the charging amount is large and supplementary charging is no longer necessary, and the engine for driving the generator is turned off (25). If it's not in charging mode,

(S21), it is determined whether or not it is a normal travel mode (S26). If it determines with normal driving mode, it controls according to the flow of a power generation and charging control sequence (S27) as a normal driving mode. If it is determined that the vehicle is not in the normal driving mode, the engine for driving the step generator is turned off (S28).

Description

Electric motor golf cart

The present invention relates to an electric golf cart that carries a golf bag or the like at a golf course.

As a golf cart of a golf course, various forms are conventionally provided. For example, many of the non- riding type and the riding type that use the electric driving type or the engine as the driving force from the hand pushing type are used. And, unlike other electric cars, the electric golf cart, although traveling along the course, is driven unattended by a remote control in a large area where road conditions are unstable.

1, the external view of the 2-seater type electric riding golf cart developed by this applicant is shown. This electric golf cart is an electric drive type with automatic and manual switching means, and a golf bag can be loaded on the rear side, and a roof for sunscreen rain cover is provided on the upper side.

The golf cart 1 covers the upper portion of the body frame 4 supported by the left and right pairs of the front wheels 2 and the rear wheels 3 by the front cowl 4a and the rear cowl 4b, and at the same time, the seats 5a and 5b sitting in front of the rear cowl 4b. Is provided to configure the riding portion 5, the steering wheel handle 6 is operable in a sitting position on the seat 5a at the distal end of the steering wheel shaft 6b protruding from the upper portion of the steering wheel shaft 6a supported in the front of the seat 5a It is attached and is comprised. In front of the vehicle body, a sensor 7 for detecting the induced current of the guide line 8 embedded in the basement is mounted.

The control system of an electric golf cart is roughly comprised of the microcomputer which is a control box, an operation part, a steering part, a sensor part, a power supply part, a motor part, a parking part, a main brake part, etc.

In the case of manual driving of the electric golf cart having such a configuration, when the operation driving switching lever is set to "manual", the driving mode becomes the manual driving mode, and the steering wheel (steering) operation, the accelerator pedal and the brake By operation, it can drive forward and backward by operation by a player.

Next, in the case of automatic driving, when the automatic driving switching lever is " automatic ", the automatic steering mode is entered. At that time, it detects the induced current flowing through the buried loop line along the cart road and controls the left and right driving directions, and similarly reads information such as speed and stop by the embedded magnet array, thereby automatically controlling and increasing the speed. • Drive down the gart while decelerating and automatically stopping. You can also start and stop at any location with the remote control or the start / stop button.

In the case of autonomous driving, if the cart guard detecting means detects an obstacle or stop in the forward direction or the output from the cart guard antenna of the golf cart while driving, the vehicle automatically stops by braking to prevent a collision. If the device detects a danger, it will stop immediately.

These conventional golf carts were only batteries as power sources and did not have a magnetic charging device. Therefore, the power supply capacity may be insufficient during long time races and special driving, but there is a possibility that the place where the battery which is the power source is charged during the race is not usually installed, and the power supply capacity may become stuck. . Therefore, in order to continue to supply power by the battery power supply and to run, it was necessary to return to the cart house and charge it at the end of the first round at the golf course.

In addition, even if the cart house is charged, it is usually necessary to install a station for each cart to charge the golf cart, and a large place to install the stations for the entire number of golf carts held by the golf course. It was necessary. Therefore, the present applicant always monitors the discharge current and the charging current of the power source (battery), which is the power source, regardless of stopping while driving, and does not charge the battery in the cart house of the golf course, but uses the generator and the charging device mounted on the golf cart. It is proposed an electric golf cart that can be recharged at regular times during a race by using a power generation and charging device that prevents power supply capacity shortage during the race and at the same time improves the performance and rationalization of the golf course.

As described above, the electric golf cart which can be charged at any time on the course of the race by the power generator and charging device installed in the golf cart is extremely useful in terms of convenience and rationality, but requires concentration. For golf players, there is a desire to play the game as quietly as possible in the entire round. In particular, the engine driving sound of the power generating device near the tee ground or the green is very disturbing. In addition, when a plurality of golf carts start charging the battery while storing the electric golf cart in the cart house, it becomes quite loud.

Therefore, in addition to the so-called "normal driving mode" in which an electric golf cart equipped with a power generation / charging device is normally replenished at regular driving time, the present invention makes it possible to play the game as quietly as possible before the round, An object of the present invention is to provide an electric golf cart that can reliably charge a battery in preparation for the next run.

1 is an exterior side view of an electric golf cart.

2 is a plan view of an electric golf cart.

3 is a configuration diagram of a control system of an electric golf cart.

4 is an embodiment of a power generation and charging control sequence in a normal travel mode.

5 is a sequence embodiment of selecting a power generation / charging control mode.

6 is a configuration diagram of a key switch.

Explanation of symbols on the main parts of the drawings

1 electric golf cart

2, 3 front, rear wheel

4 bodywork frame

5 rides

6 steering wheel

7 inductive sensor

8 guideline

9 control circuit

10 Power generation and charging device

11 power supply (battery)

12 transmission

13 traveling motor

14 ~ 17 Motor for Control of Each Part

18 motor control unit

19 main brake motor control circuit

20 parking brake motor control unit

21 Automatic / Manual Switching Motor Control

22 Motor Control Unit for Steering Control

23 Main CPU (Microcomputer)

24 current detection circuit

25 Power generation and charging device

26 generator control circuit

30-32 key switch

In order to solve the above problems, the electric golf cart according to claim 1 of the present invention includes an electric golf cart including a power generation device for charging battery power of an electric golf cart and a power generation / charging device including a charging device in a main body of the golf cart. In the cart, a configuration including the "generator stop mode" which can run without operating the generator of the generator is set.

In this way, the self-charging is frequently performed in the course of the race by the power generator and the charging device mounted on the golf cart to prevent inability to run due to lack of power capacity during long time races or special driving operations. In addition, the large-capacity charging device of the cart house can be omitted, and by selecting the "generator stop mode", the engine noise of the power generation device can be prevented, so that the competitors can concentrate on playing the whole round in a quiet atmosphere. Make it possible.

The electric golf cart according to claim 2 of the present invention is an electric golf cart comprising a power generation device for charging battery power of an electric golf cart and a power generation / charging device including a charging device in a main body of a golf cart. It was set as the structure provided with the "charging mode" which operates the generator continuously.

In this way, when the round ends in the "generator stop mode", since the amount of power storage of the battery is substantially reduced, it is necessary to charge it for the next run. Therefore, after the end of the game, the battery can be reliably charged by selecting the charging mode before storing in the cart house.

In the electric golf cart according to claim 3 of the present invention, the electric golf cart includes a power generation device for charging the battery power of the electric golf cart and a power generation / charging device including the charging device in the main body of the golf cart. It was set as the structure which has both stop mode "and" charging mode. "

An electric golf cart according to claim 4 of the present invention is an electric golf cart comprising a power generation device for charging battery power of an electric golf cart and a power generation / charging device including a charging device in a main body of a golf cart. And a "charge mode" for continuously operating the generator, and start the charging operation and stop the generator when the charging current of the battery reaches a predetermined value.

In this way, after the round is ended in "Generator stop mode", it is necessary to charge the battery for the next run, so select "Charge Mode" to store the battery after storing it in the cart house. At the time of charging, when the charging current of a battery reaches a predetermined value, the generator is stopped, and overcharge can be reliably prevented.

In the electric golf cart according to claim 5 of the present invention, the operation of each mode according to the first to third aspects of the present invention is configured to cooperate with the switching operation of the key switch of the electric golf cart.

In this way, since the mode selection switch and the key switch (the main switch for the power supply separately from the switch such as the start or stop of the cart) are arranged in common, the mode can be switched with a simple configuration.

In the electric golf cart according to claim 6 of the present invention, the electric golf cart according to claim 1 to 5 is of a type capable of automatic steering and manual driving.

The present invention can be applied to any golf cart of automatic steering or manual driving, but shows an example applied to an electric riding golf cart in which automatic steering and manual driving are selectable. Fig. 1 is an external side view of a golf cart according to the present invention, Fig. 2 is a plan view showing an internal configuration, and Fig. 3 is a control system configuration.

In the following, embodiments of the present invention will be described with reference to the drawings. Since the side surface of the electric riding golf cart of FIG. 1 was demonstrated as mentioned above, it abbreviate | omits. In FIG. 2, a plurality of power sources (batteries) 11 for traveling motors 13 and other motors are attached to the vehicle body frame 4. The axle of the rear wheel 3 has a structure in which a traveling motor 13 is attached to the transmission 12.

As a feature of the invention, there is provided a power generation / charging device 10 for charging a power source (battery) 11, which is a new configuration that is not included in a conventional electric golf cart, and other motor power sources. And the control circuit part 9 which controls the whole is arrange | positioned on the vehicle body frame 4. As shown in FIG.

The control system configuration of the electric golf cart will be described with reference to FIG. 3. The power denial motor unit is composed of a traveling motor 13, a main brake (MB) motor 14, a motor for a parking brake (PB) 15, an automatic / manual switching (HM) motor 16, and a steering control (SM) motor 17.

The motor control part 18 is provided in the traveling motor 13, and the electric current detection circuit is arrange | positioned. In addition, a main brake motor control circuit 19 is provided in the main brake motor 14 to arrange a current detection circuit and a brake position sensor. The control unit 20 of the parking brake motor 15 is provided to arrange a current detection circuit. The detection circuit is arranged in the control unit 21 of the automatic / manual switching motor 16. The control part 22 is provided in the steering control motor 17, and each motor is controlled by the main CPU (microcomputer).

The power source 11 (battery) of the power unit is connected to the dynamometer via a current detection circuit 24. One of the charging current and the discharging current of the power source 11 is detected by the current detection circuit 24, and the generator 10a of the power generation / charging device 10 is controlled by the generator control circuit 25 by the command of the main CPU 23.

The power generation / charging device 10 has a configuration in which a generator 10a is mounted on an output shaft of an engine as a power source, and is composed of an autostart motor and a choke control unit for starting the engine of the power source. It is connected to the terminal of the charger 10b after switching the alternating voltage to the direct current voltage in the generator 10a. In the main CPU 23, a memory 26 for storing the charge current value and the discharge current value periodically detected by the current detection circuit 24 is disposed.

The control system of the steering unit includes an induction sensor, a torque sensor interlocked with the handle, and a steering motor, although not shown, and the torque sensor is disposed as a means for detecting the steering operation amount.

Further, in the electric golf cart of the present invention, a mode selection switch is interlocked in common with a key switch (a main switch for power supply separately from switches such as running and stopping of the cart). Although an example is shown in FIG. 6, the key switch 30 has the rotation shaft 31 which rotates with the handle 32. As shown in FIG. The knob 32 can select the "normal running mode" which is the position of the solid line, the "generator stop mode", the "OFF", and the "charging mode" indicated by the dotted line. By the key switch 30, each of the above modes can be selected while turning on / off the electric circuits to the power source and the control circuit.

In the case of manual driving of the electric golf cart having such a configuration, when the automatic driving switching lever is set to "manual", the driving mode becomes the manual driving mode, and the steering wheel is rotated to the left or the right by operating the steering wheel as in a normal riding golf cart. The means for detecting the steering operation amount of the torque sensor responding to the operation operates to rotate the steering motor to the left through the main CPU 23. Then, by operating the steering wheel (steering) and the accelerator pedal and the brake, the forward and backward driving can be performed by the player himself.

Next, in the case of automatic steering, when the automatic driving switching lever is " automatic ", the automatic steering mode is entered. At that time, the induction current flowing through the loop line buried along the cart road (driving path) is detected as an induction signal by the left and right induction sensors, amplified and detected, and the differential output is obtained through a differential amplifier. An analog input is inputted to the left and right driving directions.

In addition, by reading the information such as the speed and the stop caused by the arrangement of magnets embedded in the cart road (driving path), the cart road is driven by the automatic control, automatic increase / deceleration, and automatic stop by the command of the main CPU 23. . It is also possible to stop oscillation at any place by operating the remote control or oscillation / stop button. Moreover, when a danger is detected by various safety devices, such as a cart guard detection means, it will stop immediately. In particular, in the case of the cart guard detecting means, since the stop operation is automatically performed, the vehicle is stopped at a certain distance from the vehicle ahead.

In the above-described configuration, the golf cart of the present invention always maintains the discharge current value and the charge current value of the power source (battery) 11 as the power source, regardless of whether it is running (including a downhill hill), running or stopped. While monitoring, the detected charging current value and discharge current value are periodically stored in the memory 26. Here, attention is paid to the charging current value and the discharge current value because the stable charging and discharging states of the battery can be detected even in the disturbance such as the fluctuation of the load, and the overcharge of the battery can be monitored and prevented.

Then, when the competitor selects the "normal driving mode" in which the knob 32 of the key switch 30 of FIG. 6 is the solid line position, the main CPU 23 determines that the main CPU 23 is the normal driving mode by the position signal of the rotating shaft 31 which rotates with this. The golf cart travels while performing the following normal charging operation.

In other words, when the main cart 23 determines that the charge amount of the battery decreases as the discharge current value increases to the current detection circuit 24 and becomes large while the golf cart is running, the engine driving the generator 10a of the power generation / charging device 10. Is turned on to charge the battery 24 via the charger 10b. Thereafter, the charging current value is checked by the current detection circuit 24, and when the discharge current value decreases and becomes small, the predetermined value or less, the engine is stopped to end the charging operation. In this way, each time the golf cart starts to run, the discharge current value is checked by the current detection circuit 24 to perform the same charging operation.

When the golf cart is stopped, the engine driving the generator 10a of the power generation / charging device 10 is started. After the engine is started, the charging current value is checked by the current detection circuit 24. When the charging current value is more than the predetermined value, the generator 10a, The battery 24 is charged via the charger 10b, and the charging operation is continued until a predetermined charging current value is reached. In addition, if it checks with the electric current detection circuit 24, and it is a predetermined or less charging current value, the engine will be stopped (OFF) and a golf cart will wait in a stopped state. Next, when traveling starts again, the discharge current value is checked by the current detection circuit 24.

In addition, since the discharge current value and the charge current value of the power source 11 are always monitored by the current detection circuit 24, the detected charge current value and the discharge current value are periodically stored in the memory 26. Regardless of the state of charge of the battery, it can be surely recharged when it is time to charge. In particular, since the golf cart does not need to be started deliberately in order to detect the charging current value and confirm the charge amount of the battery while the golf cart is stopped, no noise is generated unnecessarily.

In addition, since the engine of the power generation / charging device 10 generates noise during operation, the handle 32 of the key switch 30 is indicated by a dotted line when the player during the race wants to keep quiet and concentrate his mind throughout the round. When the generator stop mode " is selected, the main CPU 23 stops the charging operation which is frequently performed during the driving by the position signal of the rotating shaft 31 that rotates with it, and controls it to run only depending on the battery power already charged. For this reason, a quiet game can be enjoyed without being disturbed by engine sounds.

When the round ends in the "generator stop mode", of course, the amount of power storage of the battery is almost reduced, and the battery needs to be charged for the next run. Therefore, before storing in the cart house, when the knob 32 of the key switch 30 selects the "charge mode" indicated by the dotted line, the main CPU 23 causes the golf cart to be stopped while the golf cart is stopped by the position signal of the rotating shaft 31 that rotates with it. If so, a predetermined charging operation is instructed.

That is, the engine which drives the generator 10a of the power generation / charging device 10 is started, and the battery 24 is charged via the charger 10b. Thereafter, the charging current value is checked by the current detection circuit 24, and when the discharge current value decreases and becomes smaller than a predetermined value, the engine is stopped to end the charging operation.

In the normal running mode, the battery is charged to some extent by regenerative braking of the traveling motor 13 at the time of brake of the golf cart, in addition to depending on the power generation / charging device 10. In this manner, the present invention can be performed at any time by the power generation / charging device 25 without charging the battery 11 in the cart house of the golf course. Moreover, a small fuel cell can also be used as a power generation / charging apparatus.

Next, power generation and charging control in the normal running mode of the electric golf cart, which is the object of the present invention, will be described according to the flow of the power generation and charging control sequence of FIG. In the same figure, it is determined in step S1 whether the golf cart is running by the start of the power generation and charging control in step S0.

If the vehicle is traveling, step S2 is reached. In step S2, the magnitude of the discharge current (discharge amount) is determined. If the discharge current is small, it is determined that the discharge amount is small and supplementary charging is not necessary. Similarly, the determination of the magnitude of the discharge current is repeated. When the discharge current is large, it is determined that the discharge amount is large, and step S3 is reached to start the generator driving engine (ON).

In step S4, it is determined whether the engine has started. If it is not started (NG), it will reach step S3 again, and will try to start (ON) a generator drive engine. If it is determined that the engine has started, the next step S5 is reached and the magnitude of the discharge current (discharge amount) is determined.

If the discharge current is large, it is determined that the discharge amount is still large, and the determination of the magnitude of the discharge current is similarly repeated. When the discharge current is small, it is determined that the discharge amount is small and the supplementary charging is no longer necessary, and step S6 is reached and the generator driving engine is stopped (OFF). Then, the process returns to step S1 and the same control operation is repeated.

If it is determined in step S1 that the golf cart is stopped, step S7 is reached and the generator driving engine is started (ON). Next, in step S8, it is determined whether the engine has started. If it is not started (NG), it will return to step S7 again and will try to start up the generator drive engine (ON). If it is determined that the engine has started, the next step S9 is reached, and the magnitude of the charging current (charge amount) is determined.

If the charging current is large, it is determined that the charging amount is still small, and the determination of the magnitude of the discharge current is similarly repeated. When the charging current is small, it is determined that the charging amount is large and supplementary charging is no longer necessary, and step S10 is reached, and the engine for driving the generator is turned off (OFF).

After stopping the drive of the generator drive engine, it is determined in step S11 whether the golf cart is running. If it is determined that the golf cart is stopped, the same determination operation is repeated. If the driving of the golf cart is started during the determination at step S11, step S2 is reached, and the above-described control mode during driving is repeated.

Next, among the various modes of the power generation / charge control of the electric golf cart of the present invention, which are added to the power generation / charge control sequence during normal driving of FIG. 4, the “charge mode”, the “normal running mode” and the “generator stop mode” Will be described with reference to FIG. 5.

In the same figure, by the start of step S20, it is determined in step S21 whether it is a charging mode. If it is in the charging mode, step S22 is reached and the engine for generator driving is started (ON). Next, in step S23, it is determined whether the engine has started. If it is not started (NO), it will return to step S22 again and will try to start (ON) a generator drive engine. If it is determined that the engine has started, the next step S24 is reached to determine the magnitude of the charging current (charge amount).

If the charging current is large, it is determined that charging is still necessary, and the determination of the magnitude of the discharge current is similarly repeated. When the charging current is small, it is determined that the charging amount is large and the supplementary charging is no longer necessary, and step S25 is reached and the generator driving engine is stopped (OFF).

If it is determined in step S21 that the mode is not the charging mode, step S26 is reached, and it is determined whether or not it is a normal travel mode. If it is determined that the vehicle is in the normal travel mode, step S27 is reached and control is performed according to the flow of the power generation / charge control sequence in FIG. If it is determined that the vehicle is not in the normal travel mode, step 28 is reached, and the engine for step generator driving is stopped (OFF).

As described above, the golf cart of the present invention is self-charged at a course during a competition by a power generation / charging device including a power generation device and a charging device mounted on a golf cart, so that the power supply capacity for a long time race or special driving operation It is possible to prevent the inability to run due to lack of power, and also to omit the large-capacity charging device of the cart house, and to select the "generator stop mode" to prevent engine noise of the power generation device, thereby allowing the competitor to make a full round. It makes it possible to concentrate on playing in a quiet atmosphere.

In addition, since the battery needs to be charged after the end of the round in the "generator stop mode" for the next run, when the battery is charged by selecting the charging mode before storing in the cart house after the end of the race, Since the generator is stopped when the charging current reaches a predetermined value, overcharging can be reliably prevented. In addition, since the mode selection switch and the key switch are arranged in common, the mode can be switched with a simple configuration.

Claims (6)

An electric golf cart comprising a power generating device for charging battery power of an electric golf cart and a power generating / charging device including a charging device in a main body of a golf cart, wherein the generator can run without operating a generator of the power generating device. Stop mode , and the operation of the mode is linked with a switching operation of a key switch of the electric golf cart. In an electric golf cart of the battery power to the power generation and charging by power generation device and a charging device for charging the device to an electric golf cart having a main body portion of a golf cart, provided with a "filling mode" to continuously operate the generator of the power generator And the operation of the mode is linked with a switching operation of a key switch of the electric golf cart. In a golf cart provided with a power generating device for charging the battery power of an electric golf cart and a power generating / charging device comprising a charging device in a main body of a golf cart, it has both a "generator stop mode" and a "charge mode" , The operation of each mode of the electric golf cart, characterized in that in conjunction with the switching operation of the key switch of the electric golf cart. The electric golf cart according to claim 2, wherein the generator is stopped when the charging operation is started and the battery charging current reaches a predetermined value. delete The electric golf cart according to any one of claims 1 to 4, wherein the electric golf cart is of a type capable of automatic steering and manual driving.