JP2004088979A - Charge operation controller for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable charging work, taking into consideration the working environment by controlling the wasteful fuel consumption of an engine generator. <P>SOLUTION: A charge operation controller 60 is constituted of a battery 61, that supplies electric power to a travel motor 6 that rotates and drives wheels and a drive motor 53 of the driving source of an actuator 42 that drives an operating device; a charger 63 that is actuated on the supplied power to charge the battery 61, the engine generator 65 that supplies electric power to the charger 63; a power supplying cable 67, that is connectable to an external commercial power source 83 in such a way as to be freely detachable and that supplies the electric power of the power source 83 to the charger 63 in a state connected to the power source 83; and a controller 70 that stops the engine generator 65 the instance the cable 67 is connected to the power source 83, while the battery 61 is being charged on the actuation of the charger 63 by the electric power from the engine generator 65. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a charging operation control device for a vehicle, and more particularly, to a battery that supplies power to an electric motor of a driving device that uses an electric motor as a driving source, a charging device for charging the battery, and a power supply for the charging device. The present invention relates to a vehicle charging operation control device having an engine-type generator for supplying power and a commercial power supply connection means for supplying power from an external commercial power supply to a charging device.
[0002]
[Prior art]
Some of such vehicles are configured to be able to travel with a working device mounted on a vehicle body. The working device includes a boom pivotally connected to a swivel rotatably attached to a vehicle body and a worktable attached to a tip end of the boom. An electric motor is used as a drive source, and a traveling body driven by the electric motor is attached to a vehicle body. These electric motors are driven by power supply from a battery mounted on the vehicle, and the battery is charged by a charger mounted on the vehicle.
[0003]
The charger operates by receiving power supply from an engine-type generator mounted on the vehicle in addition to power supply from an external commercial power supply installed separately from the vehicle to supply predetermined power to the battery. Is configured. For this reason, if the engine-type generator is started even in long-time work, the vehicle can be continuously used.
[0004]
Electrical connection between the external commercial power supply and the charger is made via a power supply cable mounted on the vehicle. One end of the power supply cable is connected to a charger via a relay switch, and the other end is provided with a cable-side connector detachably insertable into a power-side connector provided in an external commercial power supply. . A relay switch disposed between the power supply cable and the charger operates in response to an operation of an external power switch provided on the vehicle, and electrically connects and disconnects the power cable and the charger. It is configured to The engine generator is electrically connected to the charger, and when a start switch provided on the engine generator main body or a start switch provided on the workbench is turned on, the engine generator is started. The battery can be charged by operating the charger.
[0005]
Here, to charge the battery using an external commercial power supply, take out the power supply cable mounted on the vehicle, insert the cable side connector into the power supply side connector of the external commercial power supply, and operate the external power switch. To electrically connect the power cable and the charger. On the other hand, in order to charge the battery using the engine-type generator, the start-up switch provided on the engine-type generator body or the start switch provided on the workbench is turned ON to start the engine-type generator. Let it. The state of charge of the battery charged in this manner can be confirmed by a battery capacity meter provided on the workbench.
[0006]
[Problems to be solved by the invention]
However, when the start switch is turned on to start the engine generator to charge the battery, the engine generator must be stopped unless the start switch is turned off even when the battery is fully charged. If the engine generator cannot be operated, the fuel of the engine generator is wasted if the engine generator is maintained in a driving state when the battery is fully charged.
[0007]
Further, when the battery is charged by the external commercial power while the battery charger is receiving the power supply from the engine-type generator and the battery is being charged, the charging operation control device is actually supplying power to the battery charger. In the case where the power supply source is prioritized and the later power supply source is ignored, it is not possible to change the power supply source from the engine type generator to the external commercial power supply. As a result, when the vehicle is in a place where the work environment is prioritized, there is a problem that the charging operation in consideration of the work environment cannot be performed.
[0008]
When the battery is charged by the engine-type generator while the battery is being charged by the external commercial power supply, the charging operation control device controls the charging of the battery by the external commercial power supply that is currently supplying power to the charger. When the battery is being charged by an external commercial power supply, the engine-type generator can be started, The problem arises that the fuel of the engine-type generator is wasted and that the charging operation cannot be performed in consideration of the working environment.
[0009]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a charging operation control device that suppresses useless fuel consumption of an engine-type generator and enables a charging operation in consideration of a working environment. Aim.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, a charging operation control device for a vehicle (for example, the aerial work vehicle 1 in the embodiment) of the present invention drives an electric motor (for example, the electric traveling motor 6 and the electric drive motor 53 in the embodiment). A vehicle body (for example, the traveling vehicle 8 in the embodiment) having a driving device (for example, the traveling body 5 and the working device 10 in the embodiment) as a source, a battery for supplying power to the electric motor, A charging device that operates to charge the battery (for example, the charger 63 in the embodiment), an engine-type generator that supplies power to the charging device, and a detachably connectable external commercial power source, A commercial power supply connecting means (for example, a power supply cable 67 in the embodiment) for supplying electric power from an external commercial power supply to the charging device in a connected state, When the battery is charged by operating the charging device with the power from the power source, the engine-type generator is stopped when the power from the external commercial power supply is supplied to the charging device through the commercial power supply connection means. And a charging operation control means including a controller (for example, the controller 70 in the embodiment).
[0011]
According to the charging operation control device having the above-described configuration, when power is supplied from the external commercial power supply to the charging device while the battery is being charged by the power from the engine-type generator, the engine-type generator is activated. By stopping the operation, the power supply source to the charger can be changed from the engine-type generator to the external commercial power supply. Further, when the power supply source is switched to the external commercial power source, the engine-type generator is stopped, so that useless operation of the engine-type generator can be regulated, and the fuel consumption of the engine-type generator can be reduced. , And a charging operation in consideration of the working environment can be performed.
[0012]
In the charging operation control device having the above configuration, the charging operation control means may be configured to regulate the start of the engine-type generator when the battery is being charged by the electric power from the external commercial power supply. Good.
[0013]
According to the charging operation control device having the above-described configuration, the start of the engine-type generator is regulated when the battery is being charged by the external commercial power supply, so that the driving of the engine-type generator can be minimized. it can.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. This embodiment shows an aspect of an aerial work vehicle in which a working device is mounted on a traveling body that can travel. First, before describing the charging operation control device according to the present invention, an aerial work vehicle equipped with the charging operation control device will be described. For convenience of explanation, the directions indicated by the arrows will be described as the front-rear direction and the left-right direction, as shown in FIG. As shown in FIGS. 1 and 2, the aerial work vehicle 1 includes a traveling body 5 having a steering wheel 3 and a driving wheel 4 and capable of traveling, and a swivel mounted on the traveling body 5 so as to be pivotable. 7 and a working device 10 attached to the swivel 7. The traveling body 5 and the turntable 7 are collectively referred to as a traveling vehicle 8.
[0015]
A pair of steering wheels 3 attached to the traveling body 5 are arranged on both left and right sides in front of the traveling body, are rotatable, and are configured to be steerable in the left-right direction of the vehicle. A pair of drive wheels 4 are provided on both left and right sides on the rear side of the traveling body and are rotatable. Each of the drive wheels 4 is connected to an electric traveling motor 6 shown in FIG. The revolving base 7 is mounted on the traveling body 5 so as to be horizontally rotatable, and can be revolved by an electric revolving motor (not shown).
[0016]
The working device 10 mounted on the revolving base 7 includes a lower link 11 pivotally connected to the front side of the revolving base 7 so as to be able to move up and down, and an upper link which is pivotally connected to the tip of the lower link 11 so as to be able to move up and down. 20, a boom 30 pivotally connected to the distal end of the upper link 20 so as to be able to move up and down, and a work table 40 pivotally connected to the distal end of the boom 30 so as to swing up and down. . The lower link 11 is disposed on the left side in the left-right direction of the swivel 7 and extends forward and backward. The lower link 11 includes a pair of lower link members 12 that are disposed at an interval vertically. The base ends of the pair of lower link members 12 are pivotally connected to the swivel 7, and the distal ends of the pair of lower link members 12 are pivotally connected to the first bracket 13. It constitutes a parallel link mechanism. The pair of lower link members 12 can be moved up and down by a lower link cylinder 14 shown in FIG.
[0017]
The upper portion of the first bracket 13 pivotally connected to the distal end portions of the pair of lower link members 12 extends upward and projects to the left of the swivel base, and the base end of the upper link 20 pivots on the upper portion of the first bracket 13. Is tied. The upper link 20 extends back and forth along the center of the swivel 7 in the left-right direction along the lower link 11, and includes a pair of upper link members 21 similarly to the lower link 11. The base end of each of the pair of upper link members 21 is pivotally connected to the upper portion of the first bracket 13, and the distal end of each of the pair of upper link members 21 is pivotally connected to the second bracket 22 shown in FIG. The pair of upper link members 21 constitute a parallel link mechanism. The pair of upper link members 21 can be moved up and down by an upper link cylinder 23 shown in FIG.
[0018]
The upper part of the second bracket 22 extends upward and projects to the left of the swivel base, and the base end of the boom 30 is pivotally connected to the upper part of the second bracket 22. The boom 30 extends in the front-rear direction on the left and right sides of the swivel 7 along the upper link 20 in the front-rear direction. It is configured to be possible. The boom 30 can be moved up and down by an up and down cylinder 32 shown in FIG. As described above, since the boom 30 is attached to the swivel 7 via the lower link 11 and the upper link 20, when at least one of the lower link cylinder 14 and the upper link cylinder 23 expands and contracts, the boom 30 is moved to its posture. Move up and down as it is.
[0019]
A vertical post 33 shown in FIG. 1A is pivotally connected to the end of the boom 30 so as to swing up and down. The work table 40 described above is attached to the vertical post 33 so as to be swingable in the left and right directions. I have. The work table 40 can be swung by a swing motor (not shown). An upper leveling cylinder 35 shown in FIG. 1A is pivotally connected to the lower part of the vertical post 33, and the upper leveling cylinder 35 expands and contracts according to the up-and-down angle of the boom 30 (the angle between the boom 30 and the traveling body 5). The work table 40 is always kept horizontal.
[0020]
The workbench 40 is provided with an upper operation device 45 for operating the operation of the work device 10 and the traveling body 5 and a generator operation device 50. The upper operation device 45 has a plurality of operation levers 45a, as shown in FIG. 3, and these operation levers 45a are configured to be tiltable. In response to the tilt operation of the operation lever 45a, the lower link shown in FIG. 11. The upper link 20 can be moved up and down, the boom 30 can be moved up and down, expanded and contracted, and the work table 40 can be swung. A lower operating device (not shown) having the same function as the upper operating device 45 is provided on the left side of the swivel 7. The generator operation device 50 will be described later.
[0021]
As shown in FIG. 1, the lower link 11 of the working device 10 is retracted from the front side of the vehicle to the rear side and is stored in the vehicle in a state of extending obliquely downward, and the upper link 20 is folded down from the rear side of the vehicle to the front side. The boom 30 is stored in the vehicle in a state in which it moves and extends diagonally downward, and the boom 30 is fully retracted and falls down from the front side to the rear side of the vehicle and extends diagonally downward.
[0022]
Next, the swing motor provided in the aerial work vehicle 1 described above, the lower link cylinder 14, the upper link cylinder 23, the up-and-down cylinder 32, and the oscillating motor shown in FIG. An electric drive motor 53 serving as a drive source of the hydraulic pump P shown in FIG. 3 and a charging operation control device 60 for controlling the charging operation of a battery 61 for supplying electric power to the electric traveling motor 6 will be described. As shown in FIG. 3, the charging operation control device 60 includes a battery 61, a charger 63, an engine type generator 65, a power supply cable 67, a controller 70, a generator start switch 75, and an external power supply charge start switch 77. It is configured. The actuator 42 is driven by receiving the oil pressure of the oil discharged from the hydraulic pump P, and its operation is controlled by oil supply / discharge control by an operation control valve V provided in the oil passage. The operation control valve V is configured to operate according to the operation of an upper operation device 45 and a lower operation device described later.
[0023]
The battery 61 is installed in the swivel 7 shown in FIG. 1 and is capable of supplying power to the actuator 42 to drive the actuator 42 and charge the battery. The charger 63 is electrically connected to the battery 61, operates by receiving power supplied from the engine-type generator 65 or an external commercial power supply 83 installed separately from the vehicle, and reduces the supplied power to a predetermined power. After the conversion, the battery 61 is charged. The engine-type generator 65 is a generator provided with an engine using gasoline as a fuel. When the engine is started, electric power is generated and the electric power is supplied to the charger 63. A first relay switch 85 is provided on a generator power supply line L1 connecting the engine-type generator 65 and the charger 63, and the operation of the first relay switch 85 is controlled by a controller 70. Details of the operation of the first relay switch 85 will be described later.
[0024]
The power supply cable 67 is stored in the front end of the swivel 7 shown in FIG. 1, and when the door (not shown) provided at the front end of the swivel is opened, the power supply cable 67 can be taken out. The power supply cable 67 has one end connected to the charger 63 via the second relay switch 87 and the other end connected to the power supply connector 83a of the external commercial power supply 83 in a detachable cable side. The connector 67a is attached. The operation of the second relay switch 87 is controlled by the controller 70. Details of the operation of the second relay switch 87 will be described later.
[0025]
The generator start switch 75 has a lever portion 75a that is disposed on the generator operation device 50 shown in FIG. 1B and is configured to be tiltable, and the lever portion 75a is tilted to one side (hereinafter, referred to as “ When the lever portion 75a is tilted to the other side (hereinafter referred to as “OFF operation”), the engine-type generator 65 is stopped. It is configured as follows. The generator start switch 75 is electrically connected to the engine generator 65 via the controller 70. The external power supply charge start switch 77 has a lever portion 77a which is disposed in the front end portion of the swivel table 7 shown in FIG. 1 so as to be operable externally and can be tilted, and the lever portion 77a is tilted to one side (hereinafter, referred to as "" When this is done, the second relay switch 87 is operated to electrically connect the power supply cable 67 and the charger 63, and the lever 77a is tilted to the other side (hereinafter, referred to as "OFF operation"). The power supply cable 67 and the charger 63 are configured to be electrically disconnected. The external power supply charge start switch 77 is electrically connected to the second relay switch 87 via the controller 70.
[0026]
The controller 70 controls the operation of the actuator 42 by controlling the operation of the operation control valve V in accordance with the operation of the operation lever 45a of the upper operation device 45, and operates the generator start switch 75 and the external power supply charge start switch 77. The battery 63 is charged by supplying the electric power from the engine-type generator 65 or the electric power from the external commercial power supply 83 to the charger 63 in accordance with the above. More specifically, when the charger 63 is operated by the power from the engine-type generator 65 to charge the battery 61, the controller 70 supplies the power from the external commercial power supply 83 to the power supply cable 67. When supplied to the charger 63 through the battery, the engine-type generator 65 is stopped.
[0027]
Here, the determination by the controller 70 as to whether or not the power from the external commercial power supply 83 is supplied to the charger 63 is based on the fact that the power flows through the connector connection detection line L2 connecting the power supply cable 67 and the controller 70. When it is detected that power is supplied from the external commercial power supply 83 to the charger 63, it is simulated. That is, in order for power to flow through the connector connection detection line L2, the cable side connector 67a of the power supply cable 67 needs to be inserted into the power supply side connector 83a of the external commercial power supply 83. If it is connected to the power supply 83, the power of the external commercial power supply 83 can be supplied to the charger 63 only by turning on the external power supply charge start switch 77. Therefore, when the cable-side connector 67a is inserted into the power-supply-side connector 83a, the controller 70 makes a simulated determination that power has been supplied from the external commercial power supply 83 to the charger 63.
[0028]
The controller 70 determines whether or not the battery 61 is being charged by the electric power from the engine-type generator 65. When receiving the operation signal and outputting a start signal for starting the engine type generator 65 and outputting an operation signal for connecting the generator power supply line L1 by the first relay switch 85, the controller 70 sets the engine type power generation. It is determined that the battery 61 is being charged by the power from the device 65. The operation of the first relay switch 85 is controlled by the controller 70 so as to connect and disconnect the generator power supply line L1 according to the ON / OFF operation of the lever portion 75a of the generator start switch 75. However, when the electric power from the external commercial power supply 83 is supplied to the charger 63 while the battery 61 is being charged by the electric power from the engine type generator 65, the generator start switch 75 is turned ON. Even if it is, the first relay switch 85 is operated so as to cut off the generator power supply line L1.
[0029]
As described above, the charging operation control device 60 according to the present invention supplies the electric power from the external commercial power supply 83 to the charger 63 when the battery 61 is being charged by the electric power from the engine type generator 65. Then, the engine type generator 65 is stopped. Therefore, when the power supply source to the charger 63 is switched from the engine-type generator 65 to the external commercial power supply 83, the first relay switch 85 operates so as to cut off the generator power supply line L1, and Compared with the case where the engine-based generator 65 is maintained in the driving state, the charging operation control device 60 according to the present invention can prevent the waste of the fuel of the engine-based generator 65 and consider the working environment. Charging operation can be performed.
[0030]
The controller 70 determines whether or not the electric power from the external commercial power supply 83 is supplied to the charger 63 by the controller 70 when the lever portion 77a of the external power supply charge start switch 77 is turned on to start the external power supply start. Upon receiving an operation signal from the switch 77, the second relay switch 87 outputs an operation signal for connecting the power supply cable 67 to the charging supply 63, and a connector connection detection line connecting the power supply cable 67 and the controller 70. When it is detected that power is flowing through L2, it may be determined that power from external commercial power supply 83 has been supplied to charger 63. In addition, a power meter (not shown) for detecting whether or not power is flowing through a connection line L3 connecting the second relay switch 87 and the charger 63 is provided, and a detection value from the power meter is a predetermined value. When the value exceeds the value, the controller 70 may determine that the electric power from the external commercial power supply 83 is supplied to the charger 63. Further, in the determination by the controller 70 as to whether or not the battery 61 is being charged by the electric power from the engine-type generator 65, a power meter (not shown) is provided in the generator power supply line L1 between the first relay switch 85 and the charger 63. And the controller 70 may determine that the battery 61 is being charged by the electric power from the engine generator 65 when the detected value from the wattmeter exceeds a predetermined value. .
[0031]
Further, the controller 70 is configured to regulate the start of the engine-type generator 65 when the battery 61 is being charged by the electric power from the external commercial power supply 83. That is, when the cable side connector 67a of the power supply cable 67 is inserted into the power supply side connector 83a of the external commercial power supply 83, the controller 70 starts the generator even if the generator start switch 75 is turned ON. The configuration is such that the operation signal from the switch 75 is ignored and the start of the engine-type generator 65 is regulated. For this reason, when the battery 61 is being charged by the external commercial power supply 83, the start of the engine-type generator 65 is regulated, so that the driving of the engine-type generator 65 can be minimized.
[0032]
Further, the controller 70 is configured to stop the engine-type generator 65 when the battery 61 is fully charged while the battery 61 is being charged by the engine-type generator 65. That is, the controller 70 stops the engine generator 65 when the output voltage value of the battery 61 detected by the charger 63 becomes a value corresponding to the full charge. Therefore, when it is not necessary to drive the engine-type generator 65, the engine-type generator 65 can be reliably stopped, and the fuel consumption of the engine-type generator 65 can be reliably suppressed. Note that the controller 70 operates the second relay switch 87 when the battery 61 is fully charged while the battery 61 is being charged by the external commercial power supply 83, and operates the electric power between the power supply cable 67 and the charger 63. Is configured to cut off the static connection. When the output voltage of the battery 61 decreases to a predetermined amount, the controller 70 operates the engine-type generator 65 to charge the battery 61.
[0033]
【The invention's effect】
As described above, according to the vehicle charging operation control device of the present invention, when the battery is being charged by the electric power from the engine type generator, the electric power from the external commercial power supply is supplied to the charging device. Then, by stopping the engine-type generator, the power supply source to the charger can be changed from the engine-type generator to the external commercial power supply. Further, when the power supply source is switched to the external commercial power supply, the engine-type generator is stopped, so that useless operation of the engine-type generator can be regulated, and the fuel consumption of the engine-type generator can be reduced. , And a charging operation in consideration of the working environment can be performed.
[Brief description of the drawings]
FIG. 1 shows an aerial work vehicle according to an embodiment of the present invention. FIG. 1 (a) is a left side view of the aerial work vehicle, and FIG. 1 (b) is a plan view of the aerial work vehicle. is there.
FIG. 2 is a left side view of the aerial platform vehicle when the boom is moving upward according to the embodiment of the present invention.
FIG. 3 shows a charging operation control device according to an embodiment of the present invention.
[Explanation of symbols]
1 aerial work vehicles (vehicles)
5 Running body (drive unit)
6. Electric traveling motor (electric motor)
8. Running vehicle (body)
10 Working device (drive device)
53 Electric drive motor (electric motor)
60 charging operation control device 61 battery 63 charger (charging device)
65 engine generator 67 power supply cable (commercial power supply connection means)
70 controller (charging operation control means)
83 External commercial power supply

Claims (2)

A vehicle body having a drive device using an electric motor as a drive source,
A battery for supplying power to the electric motor;
A charging device that operates by receiving power supply and charges the battery;
An engine-type generator for supplying power to the charging device;
A commercial power supply connection unit that is detachably connectable to an external commercial power supply, and supplies power of the external commercial power to the charging device in a state of being connected to the external commercial power;
When the charging device is operated by the power from the engine-type generator to charge the battery, power from the external commercial power supply is supplied to the charging device through the commercial power connection means. Then, a charging operation control device including a controller that stops the engine-type generator is provided. The charging operation control means is configured to regulate the start of the engine-type generator when the battery is being charged with electric power from the external commercial power supply. 2. The charging operation control device for a vehicle according to claim 1.

Images