CN117585547A - Elevator system and elevator control method - Google Patents

Abstract

The invention provides an elevator system and an elevator control method, which can prevent the elevator from being trapped even if the power supply is reduced when the elevator is driven by the power from a vehicle such as an electric automobile. The device is provided with: a power supply input unit (301) to which electric power from a vehicle having an electric power supply function is supplied, and which drives an elevator by using the supplied electric power; a transmitting/receiving unit (302) that receives a power-down signal indicating that the power supplied to the power supply input unit (301) is equal to or less than a predetermined threshold value or a separation notification signal for the vehicle; a determination unit (307) that determines whether or not the car of the elevator is moving between floors when the transmission/reception unit (302) receives the power-down signal or the separation advance notice signal; and an elevator control unit (303) which stops the car at the nearest floor when the determination unit (307) determines that the car is moving, and stops the operation of the elevator after opening the door.

Description

Elevator system and elevator control method

Technical Field

The present invention relates to an elevator system and an elevator control method.

Background

In recent years, electric vehicles using batteries as power sources have been widely used, and in large facilities such as shopping malls, apartments, and office buildings, the use of electric charging devices for electric vehicles has also been widely used.

The charging device is usually used for charging an electric vehicle, but a hybrid electric vehicle charging device has been developed that can switch from charging to discharging when a power failure occurs in a building, and that supplies electric power to devices in the building by using a battery of the electric vehicle.

On the other hand, in many of the above-mentioned buildings, an elevator is often provided as a lifting device, and a device is provided in which passengers are not trapped by a battery provided in the elevator when the power is off and the passenger travels to the nearest floor.

However, the battery provided in the elevator is basically a battery for the purpose of preventing occurrence of a trouble, and has a small capacity, and therefore, after traveling to the nearest floor, the elevator is stopped until the power failure is recovered.

Patent document 1 discloses a coordinated control technique as follows: with the hybrid electric vehicle charging device, electric power is supplied from the electric vehicle to the elevator, and thereby the elevator is driven even when power is cut.

Patent document 1: japanese patent application laid-open No. 2015-51844

Disclosure of Invention

As described in patent document 1, by supplying electric power from an electric vehicle to an elevator using a hybrid electric vehicle charging device, it is possible to realize elevator travel at the time of power failure. In the technique described in patent document 1, when the remaining capacity of a battery in an electric vehicle is reduced, control is performed to select whether to reduce the running speed of an elevator or stop the elevator.

However, in the technique described in patent document 1, when the remaining battery level is lowered, the process of decelerating or stopping the traveling speed of the elevator is performed, but elevator control when the battery is depleted is not considered.

That is, when the power supply from the electric vehicle is cut off, the elevator is in a trapped state when stopped while the person is sitting, but in this case, long-term trapping can be prevented by the operation of the nearest floor using the battery provided in the elevator.

In this way, it is assumed that the elevator is operated to the nearest floor by using the equipped battery at least once (in the case of intermittent power failure, a plurality of times) when the power failure occurs. In this case, if the battery capacity of the elevator is reduced and the electric power supply from the electric vehicle and the electric power supply from the battery on the elevator side are not performed, the operation of the elevator at the nearest floor is not completed, and there is a risk that the elevator may be trapped.

In addition, in an elevator installed earlier in the year and month, the elevator does not include an emergency battery, and in this case, the stop of the supply of electric power from the electric vehicle is related to a trapped state.

The present invention aims to provide an elevator system and an elevator control method, which can not cause elevator trapping even if the power supply from a vehicle such as an electric automobile is reduced.

In order to solve the above-described problems, for example, a structure described in the scope of patent protection is adopted.

The present application includes a plurality of means for solving the above problems, and includes, by way of example: a power supply input unit that is supplied with electric power from a vehicle having an electric power supply function and drives an elevator using the supplied electric power; a transmitting/receiving unit that receives a power-down signal indicating that the power supplied to the power supply input unit is equal to or less than a predetermined threshold value or a separation advance notice signal of the vehicle; a determination unit that determines whether or not the car of the elevator is moving between floors when the transmission/reception unit receives the power reduction signal or the separation advance notice signal; and an elevator control unit which stops the car at the nearest floor when the determination unit determines that the car is moving, and stops the operation of the elevator after opening the door.

According to the present invention, it is possible to prevent the occurrence of a trouble due to an abrupt stop of power supply from an electric car or the like while an elevator is traveling.

The problems, structures, and effects other than those described above will become apparent from the following description of the embodiments.

Drawings

Fig. 1 is a block diagram showing a configuration example of an elevator system and a charge/discharge device according to an embodiment of the present invention.

Fig. 2 is a block diagram showing an example of a hardware configuration of a control device of an elevator system according to an embodiment of the present invention.

Fig. 3 is a diagram showing signals transmitted and received between an electric vehicle charging/discharging device and an elevator-side transmitting/receiving unit according to an embodiment of the present invention.

Fig. 4 is a flowchart showing an example of processing from the start of supply of battery power to the stop of supply according to an embodiment of the present invention.

Fig. 5 is a view showing a display example of a display panel of an electric vehicle charging/discharging device according to an embodiment of the present invention.

Fig. 6 is a block diagram showing a configuration example of an elevator system according to another embodiment of the present invention.

Detailed Description

An elevator system according to an embodiment of the present invention (hereinafter, referred to as "this example") and an elevator control method using the same will be described below with reference to the drawings.

[ Structure of Elevator System and charging/discharging device ]

First, the configuration of the elevator system 3 of the present example and the charge/discharge device 2 connected to the elevator system will be described with reference to fig. 1.

As shown in fig. 1, the elevator system 3 of the present example is configured to supply industrial power via the charging/discharging device 2, and in normal operation, the industrial power is operated as an input power.

The electric vehicle 1 is connected to the charge/discharge device 2, and when the industrial power supply fails, the power from the battery mounted on the electric vehicle 1 is supplied from the charge/discharge device 2 to the elevator system 3 to operate the elevator system 3.

First, the configuration of the charge/discharge device 2 will be described, and the charge/discharge device 2 is a hybrid electric vehicle charging device connected as a preliminary power source to a building in which the elevator system 3 of the present example is installed.

The charge/discharge device 2 includes an AC/DC conversion unit 201, a charging unit 202, a charge/discharge switching unit 203, a discharging unit 204, a charge/discharge control unit 205, a battery remaining amount detection unit 206, a transmitting/receiving unit 207, a power switching unit 208, a charge/discharge connector 210, and a user operation unit 220.

In a normal state where industrial power is supplied, the charging/discharging device 2 converts industrial power (200V AC power) into DC power (DC power) by the AC/DC converter 201, and supplies the converted DC power to the charging unit 202. The charging unit 202 supplies the obtained DC power to the electric vehicle 1 connected by the connector 210 via the charge/discharge switching unit 203, and charges a battery mounted on the electric vehicle 1.

Here, the remaining battery level detection unit 206 detects the remaining battery level by monitoring communication with the electric vehicle 1 or a charging current and a charging voltage to the electric vehicle 1, and supplies the detected remaining battery level to the charge/discharge control unit 205.

In general, the remaining amount and charge/discharge of the battery of the electric vehicle 1 are managed by a battery control unit (not shown) mounted on the electric vehicle 1, but the battery remaining amount detection unit 206 of the charge/discharge device 2 communicates with the battery control unit mounted on the electric vehicle 1, and detects management of charging and discharging of the battery of the electric vehicle 1. However, the remaining battery level detecting unit 206 of the charge/discharge device 2 may detect (estimate) the remaining battery level based on the charging current and the charging voltage to the electric vehicle 1 alone.

In addition, the charge/discharge control section 205 controls switching between charge and discharge in the charge/discharge switching section 203, and start/end of charge and start/end of discharge. The control of the start and end of the charging by the charge/discharge control unit 205 is performed based on the remaining battery level detected by the remaining battery level detection unit 206 and the start and stop operations of the charging by the user operation unit 220.

The user operation unit 220 is constituted by a touch panel with a display function, for example, and the user operation unit 220 also displays whether the connector 210 can be separated from the electric vehicle 1 or not. Further, a lock mechanism 211 for maintaining a connection state to the electric vehicle 1 is attached to the connector 210, and the charge/discharge control unit 205 is configured not to disengage the connector 210 from the electric vehicle 1 by the lock mechanism 211 during charging or discharging.

The power switching unit 208 of the charge/discharge device 2 performs a process of switching the power supplied to the elevator system 3 in response to a command from the charge/discharge control unit 205. That is, the power switching unit 208 supplies the industrial power to the power input unit 301 of the elevator system 3 when the industrial power is normally obtained. When the industrial power source fails, the power switching unit 208 supplies the power supplied from the electric vehicle 1 to the power input unit 301 of the elevator system 3 in response to a command from the charge/discharge control unit 205.

When power is supplied from the electric vehicle 1, the charge/discharge control unit 205 switches the charge/discharge switching unit 203 to discharge, and supplies the power from the electric vehicle 1 obtained by the charge/discharge switching unit 203 to the AC/DC conversion unit 201 via the discharge unit 204. The AC/DC converter 201 converts DC power from the electric vehicle 1 into AC power and supplies the AC power to the power input 301 of the elevator system 3 via the power switching unit 208.

When power is supplied from the electric vehicle 1, the charge/discharge control unit 205 transmits and receives data to and from the elevator control unit 303 via the transmission/reception unit 207 of the charge/discharge device 2 and the transmission/reception unit 302 of the elevator system 3, and the power supply from the electric vehicle 1 is appropriately performed only when it is possible to perform the power supply. Details of the process of supplying power by data transmission and reception between the charge/discharge control unit 205 and the elevator control unit 303 will be described later.

Next, the structure of the elevator system 3 will be described.

The elevator system 3 includes a power input unit 301, a transmitting/receiving unit 302, an elevator control unit 303, an elevator car 304, a hoist 305, and an emergency battery 306. The elevator control unit 303 further includes a determination unit 307 that determines the state of the car 304.

The power input unit 301 is supplied with power from an industrial power source or the electric vehicle 1 from the power switching unit 208 of the charge/discharge device 2. That is, the power input unit 301 performs power input processing, and the entire elevator system 3 is operated by the power supplied from the power switching unit 208.

The transmitting/receiving unit 302 performs transmission/reception processing with the transmitting/receiving unit 207 on the charging/discharging device 2 side.

The elevator control unit 303 operates by using the power supplied to the power input unit 301, and controls the operation of the elevator such as the running/stopping of the car 304 by the hoist 305 and the opening/closing of the door of the car 304.

The elevator control unit 303 communicates with the transmitting/receiving unit 207 on the side of the charging/discharging device 2 through the transmitting/receiving unit 302 on the side of the elevator system 3, and transmits/receives data to/from the charging/discharging device 2 at any time. The details of the transmission and reception of data by the elevator control unit 303 will be described later.

The determination unit 307 in the elevator control unit 303 performs a determination process of the running state of the car 304 of the elevator system 3.

Although not shown, the car 304 is provided with a guide lamp, a liquid crystal indicator, and an automatic broadcasting function for guiding an elevator user and displaying a status.

When the power supply to the elevator system 3 is cut off due to a power failure, the emergency battery 306 drives the car 304 to the nearest floor and stops after the door is opened and closed. However, the capacity of the emergency battery 306 is only at least 1 time to the extent that the car 304 can be driven to the nearest floor and stopped after the door is opened and closed.

Therefore, when the charge margin of the emergency battery 306 is exhausted, a certain amount of time is required before the charging of the emergency battery 306 is completed after the industrial power is restored.

In addition, depending on the configuration of the elevator system 3, the emergency battery 306 may not be prepared.

Hardware configuration example of Elevator control section

Fig. 2 shows an example of a hardware configuration of the elevator control unit 303.

The elevator control unit 303 can be constituted by a computer as an information processing device, for example.

Fig. 2 shows an example in which the elevator control unit 303 is configured by a computer.

The computer as the elevator control section 303 includes a CPU (Central Processing Unit ) 303a, a ROM (Read Only Memory) 303b, a RAM (Random Access Memory ) 303c, and a nonvolatile storage device 303d as processors.

As the nonvolatile storage device 303d, for example, an HDD (Hard Disk Drive), an SSD (Solid State Drive: solid state Drive), a semiconductor memory, or the like is used.

The computer also includes a network interface 303e for transmitting and receiving data to and from other devices.

The CPU303a causes the RAM303c to execute a program stored in the ROM303b or the nonvolatile storage device 303d, thereby configuring each processing unit such as the determination unit 307 shown in fig. 1.

The nonvolatile memory device 303d stores a program for performing a process as the elevator control unit 303, and stores information and the like necessary for controlling the elevator.

The network interface 303e has a communication function as the transceiver 302. The transmission and reception with each section in the elevator system 3 are also performed via the network interface 303e or an interface not shown.

Although not shown, the charge/discharge control unit 205 of the charge/discharge device 2 is also configured by the same computer. However, the charge/discharge control unit 205 of the charge/discharge device 2 is different from the elevator control unit 303 in that an input unit and a display unit corresponding to the user operation unit 220 are connected to the CPU.

[ Signal Transmission/reception relationship between Elevator System and charging/discharging device ]

Fig. 3 shows an example of signals transmitted and received between the transmitting and receiving unit 302 of the elevator system 3 and the transmitting and receiving unit 207 of the charging and discharging device 2 in this example. The signal shown in fig. 3 is an example of a case where the industrial power supply fails and power is supplied from the battery of the electric vehicle 1 to the elevator system 3. The transmission and reception in the transmission and reception section 302 of the elevator system 3 are performed under the control of the elevator control section 303, and the transmission and reception in the transmission and reception section 207 of the charge/discharge device 2 are performed under the control of the charge/discharge control section 205.

First, when power supply from the electric vehicle 1 to the elevator system 3 is started from the charge/discharge device 2, the transceiver 207 transmits the independent power supply establishment signal 401 in response to an instruction from the charge/discharge control unit 205.

The independent power supply establishment signal 401 is transmitted from the charge/discharge device 2 as an instruction by the charge/discharge control unit 205, but may be a signal received by the power switching unit 208 of the charge/discharge device 2, or may be a signal received by a user operation by the user operation unit 220.

After the establishment of the power supply from the electric vehicle 1, the transceiver 207 of the charge/discharge device 2 transmits the independent operation command signal 402 to the elevator system 3. The independent operation command signal 402 is a signal indicating that the elevator system 3 is operated by the electric power supply from the electric vehicle 1. The elevator control unit 303 of the elevator system 3 that receives the independent operation command signal 402 performs constant-speed operation to lower the speed than the normal steady-state speed. This can reduce degradation of the battery of the electric vehicle 1 due to a large current discharge caused by a load current generated when the elevator system 3 is operated at a normal steady speed.

Since the independent operation command signal 402 is a signal for the purpose of reducing the load current, it is not necessary to use the signal without considering degradation of the battery of the electric vehicle 1 due to heavy current discharge.

Alternatively, the elevator control unit 303 of the elevator system 3 may automatically perform the constant-speed operation at a speed lower than the normal steady speed by receiving only the independent power supply establishment signal 401 and not receiving the independent operation command signal 402.

When the battery of the electric vehicle 1 is reduced to a certain capacity and the power supply cannot be maintained after a certain time remains in the elevator system 3, and when the user operates the electric vehicle 1 by the user operation unit 220 to separate the electric vehicle 1 from the charge/discharge device 2, a battery separation notification signal 403 is transmitted to the elevator system 3. The user here is an owner of the electric vehicle or a building manager. Based on the detection value in the remaining battery level detection unit 206, the determination by the charge/discharge control unit 205 detects that the battery has fallen to a certain capacity.

The elevator control unit 303 of the elevator system 3 that received the battery separation advance notice signal 403 controls to stop the elevator running.

Specifically, the elevator control unit 303 moves to the nearest floor while the car 304 is traveling, opens the door of the car 304, guides the passenger to the outside of the car 304 by broadcasting, displaying, or the like, and then closes the door of the car 304 to be in a stopped state. The elevator control unit 303 also opens and closes the landing door in conjunction with the opening and closing of the door of the car 304.

The elevator control unit 303 may travel to the floor where the destination floor registration is performed according to the destination floor registration button pressed in the car 304, open the door of the car 304, guide the passenger out of the car 304, close the door, stop the passenger, and set to a suspended state. In addition, if the car 304 is not used and is in a standby state, the elevator control unit 303 may be set to a suspended state as it is.

Here, in order to properly guide the passenger or not to reuse the passenger, the elevator control unit 303 can also stop the elevator more safely by disclosing the state to the passenger by the guide lamp, the liquid crystal indicator, or the automatic broadcasting at the car 304 of the elevator, the landing, or the like.

After the elevator system 3 opens and closes the door, the transceiver 302 on the elevator system 3 side transmits an elevator stop and door opening and closing signal 404 to the transceiver 207 of the charge/discharge device 2.

The charge/discharge control unit 205 of the charge/discharge device 2 controls the battery separation of the electric vehicle 1 or displays a state in which the electric vehicle 1 is separable to the user on the condition that the elevator stop and door opening/closing signal 404 is received. For example, the charge/discharge control unit 205 sets the lock mechanism 211 of the connector 210 to a locked state before receiving the elevator stop and door open/close signal 404, and sets the lock mechanism 211 to an unlocked state after receiving the elevator stop and door open/close signal 404. Alternatively, the charge/discharge control unit 205 causes the user operation unit 220 to display that the connector 210 is detachable from the electric vehicle 1.

[ flow of processing at the time of supply from vehicle ]

Fig. 4 is a flowchart showing an example of a process when an elevator is operated by receiving power supply from the electric vehicle 1 at the time of power failure by the elevator system 3 and the charge/discharge device 2 of the present example. In the flowchart of fig. 4, the left half of the processing (the processing of steps S11, S12, S15 to S19) is the processing performed by the elevator system 3, and the right half of the processing (the processing of steps S13, S14, S20 to S26) is the processing performed by the charging and discharging device 2.

First, when the power supply to the building is turned off due to a power failure (step S11), the elevator control unit 303 switches to the emergency operation based on the emergency battery 306, and drives the car 304 to the nearest floor, and then brings the passenger to a stop state after guiding the passenger to the outside of the elevator by opening and closing the door (step S12).

Next, the charge/discharge control unit 205 of the charge/discharge device 2 determines whether or not to supply electric power from the electric vehicle 1 (step S13). In step S13, when power is not supplied (no in step S13), the charge/discharge control unit 205 directly waits for the power supply and repeats the determination in step S13.

In step S13, when power supply from the electric vehicle 1 is performed (yes in step S13), the charge/discharge control unit 205 starts power supply from the electric vehicle 1 and supplies power to the elevator system 3 (step S14). The electric power supply is performed by connecting the electric vehicle 1 to the charge/discharge device 2 by a user such as a building manager or an owner of the electric vehicle, and by setting the electric power supply from the electric vehicle 1 to be possible by an operation of the user operation unit 220.

As a result, the independent power supply establishment signal 401 and the independent operation command signal 402 are transmitted from the charge/discharge device 2 to the elevator system 3, and the elevator control unit 303 of the elevator system 3 performs operation control according to the supply of electric power from the electric vehicle 1 (step S15).

Since the battery of the electric vehicle 1 is consumed by the long-time power supply and the capacity is reduced, the charge/discharge control unit 205 determines whether or not the reduction in the capacity to the preset threshold value is detected by the battery remaining amount detection unit 206 (step S20). If the capacity reduction to the threshold value is not detected in step S20 (no in step S20), the charge/discharge control unit 205 further determines whether or not a signal for the separation operation of the electric vehicle 1 is received based on the acceptance of the operation in the user operation unit 220 or the like (step S21). If the signal of the separation operation of the electric vehicle 1 is not received in step S21 (no in step S21), the charge/discharge control unit 205 returns to the determination in step S20.

In step S20, when it is detected that the capacity has decreased to the threshold value (yes in step S20), the charge/discharge control unit 205 notifies the user operation unit 220 of the decrease in the battery capacity (step S22). After notifying the decrease in battery capacity, or when receiving a signal of the separation operation of the electric vehicle 1 in step S21 (yes in step S21), the charge/discharge control unit 205 transmits a battery separation advance notice signal 403 to the elevator system 3 (step S23).

Then, the user operation unit 220 displays a state indicating that the power supply is being separated (step S24), and the charge/discharge control unit 205 determines whether or not the elevator stop and door opening/closing signal 404 is received (step S25). In step S25, when the elevator stop and door opening/closing signal 404 is not received (no in step S25), the charge/discharge control unit 205 stands by in a state where power is supplied from the electric vehicle 1.

On the other hand, on the elevator system 3 side, after starting the operation based on the power supply from the electric vehicle 1 in step S15, the elevator control unit 303 determines whether or not the battery separation advance notice signal 403 is received (step S16). If the battery separation prediction signal 403 is not received in step S16 (no in step S16), the elevator control unit 303 directly continues the operation based on the power supply from the electric vehicle 1, and repeats the determination in step S16.

When the battery separation advance notice signal 403 is received in step S16 (yes in step S16), the elevator control unit 303 determines whether or not the current operation state is that the car 304 is stopped at the landing due to the door being closed, and that no button operation is performed in the car 304 and is in a standby state (step S17).

In step S17, when the car 304 is traveling (no in step S17), the elevator control unit 303 opens the door after traveling the car 304 to the nearest floor, and closes the door after the passengers get off the elevator, and stops the operation (step S18). After stopping the operation, the elevator control unit 303 returns to the determination of step S17.

In step S17, when the car 304 is not traveling (yes in step S17), the elevator control unit 303 maintains the stopped state of the elevator while maintaining the state, and sends an elevator stop and door opening/closing signal 404 to the charge/discharge device 2 (step S19).

When the processing has been performed up to this point, the charge/discharge control unit 205 determines in step S25 that the elevator stop and door opening/closing signal 404 is received (yes in step S25), and notifies the user of the detachable state by the user operation unit 220 (step S26). The charge/discharge control unit 205 unlocks the lock mechanism 211 of the connector 210, and disengages the connector 210 from the electric vehicle 1.

In addition, the charge/discharge control unit 205 may stop the supply of power to the elevator system 3 at the same time as the determination of the stop of the elevator and the reception of the door opening/closing signal 404.

[ display example of user operation section ]

Fig. 5 shows a display example of the display panel 221 of the user operation unit 220.

Fig. 5A shows an example of a state in which power is supplied from the electric vehicle 1 to the elevator. At this time, the display panel 221 displays a power failure of the building, that is, displays 222 during power supply to the elevator. In addition, the display panel 221 may also display that the lock mechanism 211 is in lock.

Also, the display panel 221 displays a separation button 223 of the electric vehicle 1. When the user touches the separation button 223 of the electric vehicle 1, processing is performed in a case where a signal of the separation operation of the electric vehicle 1 is received in step S21 of the flowchart of fig. 4.

Fig. 5B shows an example when an elevator stop signal 404 is received from the elevator system 3. At this time, the display panel 221 displays 224 that can be separated by stopping the supply of electric power to the elevator. In addition, the case where the lock mechanism 211 is unlocked may be displayed.

Effect of the embodiment example

By performing the above-described processing, in the elevator system 3 of this example, it is possible to perform the operation control to prevent the elevator from getting stuck before the power supply from the electric vehicle 1 is cut off. Here, the state in which the power supply from the electric vehicle 1 is cut off includes a case in which the electric vehicle 1 is desired to be separated according to a user such as a building manager or an electric vehicle owner, in addition to a decrease in the battery capacity of the electric vehicle 1. In either case, however, the operation control to prevent the elevator from getting stuck can be appropriately performed.

In this case, the transceiver 302 of the elevator system 3 transmits an elevator stop and door open signal to the charge/discharge device 2, and the charge/discharge device 2 that has received the elevator stop and door open signal allows the stop of the power supply from the electric vehicle 1 or the separation of the vehicle, so that the separation of the electric vehicle 1 in the charge/discharge device 2 before the elevator stops can be reliably prevented, and the elevator can be reliably prevented from getting stuck.

Further, since the user operation unit 220 of the charge/discharge device 2 displays whether or not the electric vehicle 1 can be detached, the user of the electric vehicle 1 can perform the detachment operation appropriately in response to the notification based on the display. In addition to the display, the notification may be a notification based on the output of the sound message.

Further, by providing the lock mechanism 211 to the connector 210 connected to the electric vehicle 1, the lock mechanism 211 is released after the stop of the elevator, and thus the separation before the stop of the elevator can be reliably prevented, and the elevator can be more reliably prevented from being trapped.

The charge/discharge device 2 includes a remaining battery level detection unit 206, and when the remaining battery level detected by the remaining battery level detection unit 206 is equal to or less than a predetermined threshold value, the battery separation prediction signal 403 corresponding to the power reduction signal is transmitted to the transmission/reception unit 302 of the elevator system 3, whereby it is possible to appropriately determine that the elevator operation is suspended.

Modification example

The embodiment examples described above are described in detail for the purpose of easily understanding the present invention, and are not limited to the configuration in which all the components described above are necessarily provided.

For example, in the above embodiment, the charge/discharge device 2 has been configured to incorporate the power switching unit 208 for switching the power to the elevator system 3, but the power switching unit 208 for switching the power to the elevator system 3 may be provided outside the charge/discharge device 2.

That is, as shown in fig. 6, the power switching unit 208 'may be provided separately from the charge/discharge device 2', and the power switching unit 208 'may switch between supply of the elevator system 3 for industrial power and supply of the power from the electric vehicle 1 in response to an instruction from the charge/discharge control unit 205 of the charge/discharge device 2'.

As shown in fig. 6, the user operation unit 220 'may be a separate member from the charge/discharge device 2'. In this case, the user operation part 220' may be a terminal such as a smart phone held by a user.

The charge/discharge device 2' is similar to the charge/discharge device 2 shown in fig. 1 except that it does not include the power switching unit 208 and the user operation unit 220. Further, the processing performed by the power switching section 208 'and the user operation section 220' is the same as the processing performed by the power switching section 208 and the user operation section 220 shown in fig. 1.

In the configuration shown in fig. 1, the connector 210 is provided with the lock mechanism 211, but the lock mechanism 211 may be omitted, and the user may be notified of the detachment availability only by the display of the user operation unit 220'.

In the configuration of fig. 1 and 6, the elevator system 3 includes the emergency battery 306, but may be applied to an elevator system that does not include the emergency battery 306.

In the above embodiment, as the processing at the time of stopping the supply of electric power from the electric vehicle, the stopping to the nearest floor, the opening of the door, and the closing of the door after the passenger gets off the elevator were performed, but at least the stopping to the nearest floor and the opening of the door may be performed, and the closing of the door may be omitted.

In the above embodiment, the vehicle connected to the charge/discharge device 2 is an electric vehicle, but other vehicles having a power supply function, such as a hybrid vehicle having an engine and a generator, a hydrogen vehicle that generates power using hydrogen fuel, and the like, may be connected to the charge/discharge device 2 to perform the same power supply process. In this case, instead of determining the power supply stop based on the remaining battery level of the vehicle, the power supply stop is determined based on the remaining power supply level (fuel level, etc.) of the vehicle.

In the configuration shown in fig. 1 and the flowchart shown in fig. 4, the elevator control unit 303 included in the elevator system 3 performs the process at the time of power failure, but the program installed in the control unit of the conventional elevator system may be modified to perform the same process.

The program in this case may be prepared in a nonvolatile memory device or a memory in a computer constituting the elevator control unit 303 shown in fig. 2, or may be transferred to a recording medium such as an external memory, an IC card, an SD card, or an optical disk.

Part or all of the functions performed by the elevator control unit 303 may be realized by dedicated hardware such as FPGA (Field Programmable Gate Array: field programmable gate array) and ASIC (Application Specific Integrated Circuit: application specific integrated circuit).

In the configuration diagrams shown in fig. 1 and 6, control lines and information lines are only those considered necessary for explanation, and not necessarily all control lines and information lines on the product. In practice, it is also possible to consider that almost all structures are connected to each other. In addition, regarding the flowchart shown in fig. 4, if the processing results are the same, the processing order may be changed, or a plurality of processes may be simultaneously executed.

Symbol description

1 … electric automobile; 2. 2' … charge-discharge device; 3 … elevator system; 201 … AC/DC conversion part; 202 … charging section; 203 … charge-discharge switching section; 204 … discharge; 205 … charge/discharge control unit; 206 … battery remaining amount detecting section; 207 … transceiver; 20. 208' … power switching section; 210 … charge and discharge connectors; 211 … locking mechanism; 220. 220' … user operation part; 221 … display panel; 223 … electric automobile disconnect button; 301 … power input; 302 … transceiver; 303 … elevator control section; 303a … CPU;303b … ROM;303c … RAM;303d … non-volatile storage; 303e … network interface; 305 … windlass; 306 … emergency battery; 307 … judgment unit; 401 … independent power set-up signal; 402 … independent run command signals; 403 … battery separation forenotice signal; 404 … elevator stop and door open/close signal.

Claims (6)

1. An elevator system, comprising:

a power supply input unit that is supplied with electric power from a vehicle having an electric power supply function and drives an elevator using the supplied electric power;

a transmitting/receiving unit that receives a power-down signal indicating that the power supplied to the power supply input unit is equal to or less than a predetermined threshold value or a separation advance notice signal of the vehicle;

a determination unit that determines whether or not the car of the elevator is moving between floors when the transmission/reception unit receives the power reduction signal or the separation advance notice signal; and

and an elevator control unit which stops the car at the nearest floor when the determination unit determines that the car is moving, and stops the operation of the elevator after opening the door.

2. An elevator system according to claim 1, characterized in that,

supplying power to the power input unit via a charge/discharge device corresponding to the vehicle,

after the determination by the determination unit, when the elevator control unit stops the car at the nearest floor and opens the door, the transmission/reception unit transmits an elevator stop and door opening signal to the charge/discharge device, and the charge/discharge device that has received the elevator stop and door opening signal allows the stop of the power supply from the vehicle or the separation of the vehicle.

3. An elevator system according to claim 2, characterized in that,

the charge and discharge device comprises a user operation part with a display function,

when the user operation unit performs the separation operation of the vehicle, the charge/discharge device transmits the separation advance notice signal, and when the charge/discharge device receives a signal to permit the separation after that, the user operation unit displays the separation.

4. An elevator system according to claim 2, characterized in that,

the charging and discharging device is connected with the vehicle via a connector,

when the charge and discharge device receives a signal that allows stopping of power supply or separation of the vehicle, the lock mechanism is released so that the connector is separated from the vehicle.

5. An elevator system according to claim 2, characterized in that,

the charge/discharge device includes a battery remaining amount detection unit of the vehicle connected thereto,

and a transmitting/receiving unit configured to transmit the power lowering signal to the transmitting/receiving unit when the remaining battery level detected by the remaining battery level detecting unit is equal to or less than a predetermined threshold.

6. An elevator control method for controlling the operation of an elevator, comprising:

a power supply input process for supplying electric power from a vehicle having an electric power supply function and driving an elevator by using the supplied electric power;

a transmission/reception process of receiving a power-down signal indicating that the power supplied by the power supply input process is equal to or less than a predetermined threshold value or a separation notice signal of the vehicle;

a determination process of determining whether or not the car of the elevator is moving between floors when the power-down signal or the separation advance notice signal is received by the transmission/reception process; and

and an elevator control process for stopping the car at the nearest floor when the judging process judges that the car is moving, and stopping the operation of the elevator after opening the door.