JP6137593B2 - 100V and 200V automatic switching charging stand - Google Patents

Description

According to the present invention, in a parking lot in which a charging device such as an electric vehicle is installed, a larger number of charging compartments and charging stands than the number of electric circuits that can be energized simultaneously at 200V are provided, and the charging compartment is energized simultaneously at 200V. when entering a number of electric car than the electrical circuit number possible, automatically switching to 100V the charging circuit, and a charging station, such as is possible charge of all of the electric car.

A parking lot where a car is parked for a relatively long time is optimal as a charging place for an electric vehicle or the like, and is positioned as an energy supply infrastructure for an electric vehicle or the like that replaces a conventional gas station. In particular, coin parking, which has a plurality of compartments, detects entry and exit, and charges a parking fee based on the parking time, is also ideal as a charging place for electric vehicles, etc. The number is expected to increase rapidly in the future.

However, in a parking lot that can be recharged, if a gasoline vehicle or the like is stored in a passenger compartment with a charging facility, there is an inconvenience that the user cannot use the charging facility even though there is a charging facility. There is a problem that the income of the charge cannot be obtained. For this reason, if the number of passenger compartments equipped with charging stations is increased, the number of cases in which charging is not possible for the user is reduced. However, the power contract needs to be made at the maximum power when a vehicle to be charged enters all the passenger compartments for charging. Therefore, the burden of fixed costs increases for the owner.

JP2011-244630 Japanese Patent Application No. 2008-178765 JP2011-182588 JP2011-010534A JP2011-205828 JP2011-120395 JP2012-024334 JP2010-1420206 JP 2010-142025 JP2012-1000048 JP2012-60736 JP2012-39685A JP2012-19658

As a method for solving the above problems, in Patent Document 1, a charge management device is installed in a parking lot having a plurality of charging stations, and charging is performed sequentially while considering charging restrictions so that the power used does not exceed the contracted power. A charge control system for performing is shown.

Patent Document 2 discloses an apparatus that measures the remaining battery level of an electric vehicle to be charged in order to save the contracted capacity of a power source and charges the battery with several charging patterns when a plurality of charging stations are installed in a parking lot. Has been.

Patent Document 3 discloses a device that distributes charging places by detecting that a charging capacity of a plurality of charging devices is low or high.

Patent Document 4 discloses a system that determines a combination of electric vehicles to be simultaneously charged using a database of charge management information.

Patent Document 5 discloses a charging facility that determines a power reception schedule by inputting ticket information.

Patent Document 6 discloses a system that automatically determines and switches between charging by a commercial power source and charging by a quick charging power source.

Patent Document 7 discloses a control device that has a plurality of output terminals from one charging device and actually outputs output from one of the charging devices in the quick charging system.

Patent Document 8 shows a system that reserves a charging start time in advance using a quick charging system.

Patent Document 9 discloses a control system for calculating a time required for charging a battery and charging in a priority time zone in a quick charging system.

Patent Document 10 discloses an apparatus in which a normal charging stand can be moved by providing a caster.

Patent Document 11 discloses a control method for detecting the completion of charging and turning off the power feeding circuit.

In Patent Document 12, when charging a large number of vehicles simultaneously, the current to each battery is measured to calculate the amount of power supply voltage drop, and the amount of charge is controlled so that the total voltage drop does not exceed a certain value. The system to do is shown.

Patent Document 13 shows a system having a reservation management unit using a network that limits charging targets to a predetermined time and a predetermined reserved vehicle at a charging station having a plurality of charging stations.

The above-mentioned patent documents show that a quick charging device is provided with a control system for charging a plurality of charging vehicles and an ordinary charging stand, and the charging stand can be moved or a network is used. However, methods such as collecting remaining battery power and using a digital information processing device for charge allocation have the disadvantage of making the charging stand highly functional and expensive.

In a parking lot, increasing the number of charging stations and cabins that can be charged for the convenience of users increases the number of electrical circuits, so the power usage contract for power usage must be increased in proportion to the number of circuits. . However, since it is rare that many passenger compartments are charged at the same time, it is not preferable from the standpoint of parking lot management that the power capacity and contract fee increase in proportion to the number of charging stations.

The present invention relates to a parking lot charging station in which a plurality of charging stands are provided in a part of the parking lot, the number of chargeable vehicle compartments is larger than the number of electric circuits determined by the contract power of 200 V, and the charging power is contract power. In the case of exceeding the above, a reasonable parking lot for charging that can automatically switch 200V charging to 100V charging and continue the charging service is provided. Further, even if a gasoline vehicle enters a vehicle room that can be charged, the remaining vehicle compartment can be charged at 200V. As a method of eliminating the need to increase the power capacity in proportion to the chargeable cabin when the number of such chargeable cabins is increased, a system that automatically switches between 200 V charging and 100 V charging is disclosed in the prior patent document. Is not shown.

There are more charging stations and charging compartments than the number of electric circuits of 200V limited by the contracted amount of electricity, that is, the number of charging stations that can be charged simultaneously at 200V (chambers that can be charged). In order to output either 200V or 100V, the electric switching for charging based on the current information of other circuits so that it can be charged at 200V or 100V even if the electric vehicle is stopped in any vehicle compartment The device is controlled by logic judgment by a programmable relay device .

According to the present invention, the charging circuit is provided in the passenger compartment capable of charging a larger number of charging stations than the number of charging stations corresponding to the receiving capacity of 200 V, so that the charging circuit is 200 V depending on the number of electric vehicles to be charged. By switching to any one of 100V, there is an effect that a charging service can be provided to more electric vehicles while saving an electric power contract.

In addition, when a gasoline vehicle enters a vehicle compartment that can be charged, there has been a disadvantage that the charging stand of the vehicle compartment cannot be used and wasted, but in the case of the present invention, the vehicle compartment that can be charged simultaneously at 200V. Since more passenger compartments are prepared, there is an effect that 200 V or 100 V can be charged in other passenger compartments.

According to the present invention, when the electric vehicle being charged is fully charged and charging current stops flowing, it is possible to detect this and automatically switch other circuits charged at 100V to 200V. Therefore, a better charging service can be provided while saving contract power.

Furthermore, if the number of vehicle compartments and charging circuits that can be charged is the same, the power receiving capacity is contracted assuming that all charging stations are charged at the same time, so the power equipment cost and basic contract fee will increase. However, in the present invention, it is not necessary to increase the power receiving capacity even if the number of vehicle compartments and charging stands that can be charged is increased, so that there is an effect that the fixed cost of the parking lot can be saved .

These show the system (single line connection diagram) of 200V and 100V automatic switching of the charging stand which provided the charging device in the two vehicle interior which is the basis of this invention. Shows a 200V, 100V automatic switching system in which the position of the earth leakage breaker is changed in the system of FIG. Shows a 200V, 100V automatic switching system using the charging start switch in the system of FIG. These show the structure of the electromagnetic switch for charge. In the present invention, an input / output terminal configuration of a smart relay (registered trademark, manufactured by IDEC), which is one of the programmable relay devices, and a current detection device (CT: current transformer) for detecting the current of the charging circuit The connection of the output to the analog input terminal is shown. 5 is one of the relay devices that can be programmed with the on-signal of a commercially available current detection switch instead of a current detection device (CT: current transformer) , which has the same function as FIG. The connection diagram connected to the digital input circuit of the smart relay is shown. Is a method of inputting various signals to the smart relay, which is one of the relay devices that can be programmed for control in the present invention, and four electromagnetic units for switching the charging circuit from 200 V to 100 V circuit and vice versa. The output wiring method to the excitation circuit of the switch is shown. Is a part of a logic diagram of a control circuit of a smart relay, which is one of the relay devices that can be programmed to automatically switch charging by the 200V and 100V circuits of the present invention, and is a current detection device (CT: The logic circuit of the part which connects the output of a current transformer) to the analog terminal of a smart relay is shown. The part of the logic diagram of the control circuit of the smart relay, which is one of the relay devices that can be programmed to automatically switch between charging by the 200V and 100V circuits of the present invention, the current detection of the charging circuit is a current detection switch. The logic circuit when the ON signal is connected to the digital terminal of the smart relay is shown. These show the control logic diagram of the smart relay which is one of the relay devices which can be programmed to operate the electromagnetic switch which supplies power by selecting the circuit for 200V and 100V with the current detection result of the present invention as an input. These show the whole logic diagram of the smart relay which is one of the relay devices which can be programmed to switch automatically between 200V and 100V circuits using the current detection switch of the present invention. These show the whole logic diagrams which switch the circuit of 200V and 100V when inputting the charging current detection of this invention into the analog circuit of the smart relay which is one of the relay devices which can be programmed with CT.

FIG. 1 shows a single-line diagram of a two-chamber charging stand that can automatically switch between 200V and 100V circuits of the present invention. 1 and 2 are 200V and 100V power supplies, 3 and 4 are main power switches of 200V and 100V circuits, 5 and 6 are 200V and 100V power lines, and 7 and 9 are 200V charged in two passenger compartments. The electromagnetic switches 8 and 10 are electromagnetic switches for 100V charging, respectively. 11 and 12 are earth leakage circuit breakers of a circuit for supplying power to the passenger compartments 1 and 2, and 13 and 14 are charging stands for charging the two passenger compartments 15 and 16. Reference numerals 17 and 18 denote vehicle detection devices that detect that the vehicle has entered the passenger compartment. Reference numerals 19 and 20 denote current detection devices that detect whether or not the charging stations 13 and 14 are charged. Reference numeral 21 denotes a programmable relay device having a logic circuit that determines switching between 200 V and 100 V charging . Programming can relay device 21, as the input information of the logical decision, takes in the output of the current detector for detecting charging current of the two passenger compartment in the signal line 22, vehicle detection apparatus for detecting a goods receipt into the passenger compartment 17 , 18 information is taken in by the signal line 23. The result of the logic judgment is transmitted to the electromagnetic switch for charging the 200V or 100V circuit through the signal line 24, and these are operated.

In FIG. 1, the power reception contract corresponds to charging of one unit at 200V. If a vehicle to be charged only enters 15 of the vehicle compartments 15 and 16 that can be charged, the vehicle detection device detects entry and sends a signal to the programmable relay device 21. Since there is no car in the compartment 16 and charging is not performed, the device closes the electromagnetic switch 7 connected to the 200V circuit, so that the car entering the compartment 15 is charged at 200V. Is called.

In this state, when a vehicle to be charged also enters the passenger compartment 16, the vehicle detection device 18 detects the entry and sends the signal to the relay device 21 that can be programmed . Since the apparatus is already charged with 200V in the passenger compartment 15, if the electromagnetic switch 9 is closed and 200V charging is started for the first time, the power receiving contract power is exceeded and the main power switch is opened. In the present invention, the programmable relay device 21 makes a logical decision and switches the charging circuit of the passenger compartment 15 from 200V to 100V. That is, the electromagnetic switch 7 is opened and the electromagnetic switch 8 is closed after a while. On the other hand, the electromagnetic switch 10 connected to the 100 V circuit is also closed for the vehicle in the passenger compartment 16. Thereby, when charging is performed simultaneously in two vehicle compartments, charging is performed at 100V. Thereby, even if the electric vehicle parked in the passenger compartments 15 and 16 is charged at the same time, the received power contract fee is not exceeded.

Next, when one of the vehicles that have been charged at 100V in the two passenger compartments has finished charging, the cable for charging is removed from the charging stand. Assuming that the car is now in the passenger compartment 15, the current flowing through the earth leakage breaker 11 becomes zero. This is detected by the current detector 19. The signal is sent via a signal line 22 to a programmable relay device 21. The apparatus determines that charging has been performed only for the vehicle in the passenger compartment 16 and opens the electromagnetic switch 8. On the other hand, since the vehicle in the vehicle compartment 16 can be charged with 200 V, the control device first opens the electromagnetic switch 10 and closes the electromagnetic switch 9 after a while. Thereby, the vehicle charged in the passenger compartment 16 is charged at 200V.

In the above description, regardless of whether the first vehicle to enter the vehicle compartment 16 or the vehicle to be charged first, the programmable relay device is 200V for charging only one unit, It is designed to charge 100V when charging two units at the same time.

In FIG. 1, since the current detection devices 19 and 20 detect that charging has been completed in one of the passenger compartments, the electromagnetic switches 7 and 8 or 9 and 10 are opened even when the vehicle is not released from the passenger compartment. The charging station can be disconnected from the power source, and the remaining vehicle in the passenger compartment can be charged at 200V.

FIG. 2 shows another single-line diagram of the charging station of FIG. The difference from FIG. 1 is that the earth leakage breakers 11 and 12 are placed on the load side of the main power switch, and the function is exactly the same as FIG.

3, instead of the receipts to the passenger compartment in the vehicle detector 17 and 18 in FIG. 2, is provided with a charging switch 25 and 26. In this case, charging is started only when a person using a charging device such as an electric vehicle presses the charging switch.
Whether the two passenger compartments have already been charged is detected by the current detection device in the same manner as in FIGS. 1 and 2, so it is possible to program whether to charge 200V or 100V. The relay device 21 determines.

FIG. 4 shows the configuration of the electromagnetic switch 27. When the DC or AC excitation power source is connected between the excitation terminals 30 and 31 of the electromagnetic switch 27, current flows through the coil 32 of the electromagnet. The switch closes.

FIG. 5 shows a signal input circuit of the relay device 21 capable of programming used in the present invention. It is convenient to use a smart relay (made by IDEC) 33 as this type of device . A smart relay can be configured by programming a logic circuit configured using a large number of relay switches. The smart relay 33 has eight input terminals and a 24V power supply terminal on the left side, and four contact outputs on the right side.

In FIG. 5, the four terminals 35a and 35b on the right side are capable of analog input, and the charging currents in the two passenger compartments are connected to the rectifier circuits 43 and 44 of the outputs of the CTs 41 and 42, respectively. In the programming of the smart relay, as described later, the analog circuit switch is set to be turned on when there is a current exceeding a certain current.

The right side of the smart relay in FIG. 5 is four output terminals as a result of the logical determination of the smart relay. When the determination result is true, the contact is closed, and when the determination result is false, the contact is open. By opening and closing the contacts, the 200V and 100V charging electromagnetic switches are turned on and off.

FIG. 6 shows a case where the presence / absence of the charging current of the charging circuit is taken into the digital input terminal 49a of the smart relay 33 by using the commercially available current detection switches 46 and 47. The outputs of the current detection switches 46 and 47 are contact information, and the internal contact is closed when the current exceeds a certain current, and the contact is opened when the current contact is less than that. This signal is transmitted to the digital input terminal 49b of the smart relay 33.

FIG. 7 shows an overall connection diagram of a control circuit using the smart relay 33. The four input terminals on the left side of the smart relay are connected to the charging start switches 25 and 26 of the passenger compartments 15 and 16. The two terminals on the lower left are connected to a DC 24V power source. The contact outputs 47 and 48 of the current detectors 45 and 46 are connected to the four terminals on the upper left side. The four contact outputs 39a, 39b, 39c, 39d on the right side of the smart relay are connected to the excitation circuits 60, 61, 62, 63 of the electromagnetic switches 56, 57, 58, 59 by turning on the power of 24V. For this reason, when the logic judgment of the smart relay is true, the electromagnetic switch connected to the circuit is turned on, and when it is false, the electromagnetic switch of the circuit is turned off.

Next, a logic circuit that performs switching control of the electromagnetic switch by the smart relay will be described. In FIG. 8, after the vehicle enters the passenger compartment, the vehicle detection device detects this, and after the user of the charging station connects the vehicle and the charging station with the charging cable, the charging start switch 25 is set after a certain period of time. The operation of the logic circuit when turned on is shown. When the switch 25 is turned on, the off-delay timer 64 starts from that moment, and the output of 64 is turned off after a certain time (set). That is, one of the inputs of the OR circuit 65 receives a signal for a certain time after the charging start switch 25 is turned on, so that the output of the OR circuit is on.
Further, since the analog input circuit 66 is connected with a rectifier circuit as shown in FIG. 5 for detecting the charging current of the circuit, the input of the OR circuit 65 is turned on. Therefore, if the charging current flows before the off-delay timer is activated, the output of the OR circuit 65 remains on. Since the output of the charging start switch 25 and the output of the OR circuit 65 are inputs to the AND circuit 67, the output of the AND circuit 67 is also turned on when the charging start switch 25 is turned on and a charging current is flowing. Give a signal. Since the input of the AND circuit 68 is AND between the charge start signal and the output of the OR circuit 65, the output of the AND circuit 68 is also ON while the charging current is flowing.
However, when the charging start switch is turned off in this state, the output 69 of the AND circuit 68 is immediately turned off. Also, when the charging current flowing through the circuit becomes smaller than the specified value, the output of the analog switch 66b is turned off, so that the output of the OR circuit 65 is turned off. In either case, the output 69 of the AND circuit is turned off.

Next, FIG. 9 is a logic circuit when current detection is performed by a current detection switch . The logic circuit is the same as that of FIG. 8 except that the current detection switch 70 is used. When the charging current is flowing, the output of the OR circuit 65 is turned on. The output 69 of the AND circuit 68 is turned on when the charging start switch is on and a charging current of a certain current or more is flowing.
However, when the charging start switch is turned off in this state, the output 69 of the AND circuit 68 is immediately turned off. Also, when the charging current flowing through the circuit becomes smaller than a specified value, the output of the current detector is turned off, so that the output of the OR circuit 65 is turned off. In either case, the output 69 of the AND circuit is turned off.

The logic circuits of FIGS. 8 and 9 are applied to the two vehicle compartments 15 and 16. FIG. 10 shows a logic circuit for controlling an electromagnetic switch that switches between 200 V and 100 V charging voltages using whether or not charging is performed in both the vehicle compartments as input information. Reference numerals 72 and 73 denote charging information for two passenger compartments, and indicate the outputs of the AND circuit 69 shown in FIGS.

Here, Table 1 shows a list of switching between 200V and 100V charging. There are four cases, and Case 1 is a case where charging is performed only in the passenger compartment 1 and is 200 charging. Case 2 is a case where charging is performed only in the passenger compartment 2 and is 200V charging. Case 3 is a case where both vehicle compartment charging is performed, and charging is 100V. Case 4 is when charging is completed, or when a gasoline car is received in both passenger compartments.

A logic circuit for switching the charging voltage as shown in Table 1 is shown in FIG. First, 200V charging can be performed when charging is not performed in another vehicle compartment. As an example, the output 80 of the smart relay is turned on when the input circuit 72 is turned on, that is, when the charging start switch is turned on and charging current does not flow in other circuits. In the logic circuit of FIG. 10, the OFF output of 73 is inverted by 74 and ANDed with 72 output and 75. This output is output to 80 at a predetermined time by an on-delay timer 78. 80 excites the excitation circuit of the electromagnetic switch for 200 V, so that 200 V charging is performed.

On the other hand, in the other cabin circuit, 73 is turned off, and the 72 signal is inverted at 76, so both inputs of the AND circuit 77 are turned off and the output 81 for 200V charging is turned off. Become. Further, regarding the circuit of 100 V charging, the output 87 is off because the output of 73 is off in the AND circuit 85. That is, when one side is charged with 200V, the other is off with both the 100V and 200V circuits.

In this state, a case where a vehicle to be charged enters the second vehicle compartment and a charging switch enters will be described. That is, when both 72 and 73 are turned on in FIG. At this time, since the output of the inverting circuit 74 connected to 73 is turned off, the AND circuit 75 is turned off and the output 80 is turned off. That is, the 200V charging electromagnetic switch is turned off and the 200V charging is stopped.

On the other hand, since the output of 72 remains on the charging switch, the outputs of 73 and 72 are both turned on in the AND circuit, so that the output 84 is turned on after the on-delay timer. As a result, the person who was charging 200V switches to 100V. Here, the on-delay timer is used to delay the turning on of the output 84 in order to avoid simultaneously turning on the 100V circuit and the 200V circuit, which is an indispensable part in configuring the logic circuit. When switching between 100V and 200V, in all cases, the circuit of 100V and 200V is once cut off and a circuit of 200V or 100V is newly turned on.

In the other circuit, the AND circuit 77 is turned off because of the inverting circuit 76, and the output 81 remains off. However, in the AND circuit 85, since 72 is turned on and 73 is also turned on, 87 is turned on after a predetermined time through the on-delay circuit.

Next, the case where charging is completed in one of the passenger compartments from the state where 100V charging is performed in the two passenger compartments will be described. Now, in FIG. 10, it is assumed that 72 is turned off. At this time, since the inverting circuit 76 is turned on for the input of the AND circuit 77, an on signal is output to 81 via the on-delay circuit. On the other hand, as for the output 87, since the signal from 72 of the AND circuit 85 is turned off, the output of 87 is turned off. That is, the charging is switched from 100V to 200V charging.

The switching from 100V charging to 200V charging as described above is because the input 72 or 73 in FIG. 10 is turned off when the charging current approaches the full charge and becomes very small even if the charging switch is turned on. 100V charging stops and switches to 200V charging.

FIG. 11 shows the input circuits 72 and 73 of FIG. 10 represented by the logic circuit of FIG. 9, and shows an overall diagram of the logic circuit of the programmable relay device of the present invention. The control logic is the same as that described above.

FIG. 12 shows the input circuits 72 and 73 of FIG. 10 represented by the logic circuit of FIG. 8 and shows the entire other control logic circuit of the programmable relay device of the present invention. The control operation is as described above.

In the description so far, two vehicle compartments are paired and charged at 200 V when only one of them is charged, and charged at 100 V when both are charged at the same time, thereby suppressing an increase in the contract power charge. When the number of charging compartments is increased to 4 or 6, it is easiest to increase the above system in units of 2 compartments.

If there are 4 cabins that can be charged and the power contract is for 2 cabins, any 2 cabins are 200V, and when charging in 3 cabins, 200V is the remaining 2 cabins in the cabin. A control circuit that charges at 100V can also be built with a smart relay.

In the present invention, when a plurality of charging spaces and charging stands are installed in a time-rented parking lot, a larger number of charging stations and charging vehicle compartments than the number of electric circuits that can be charged at all charging stations at 200 V are provided, Can be automatically switched to 100V charging, and when the vehicle charging at 100V finishes charging or the charging current is cut off due to full charging, the other vehicle Can be automatically returned to 200V charging, which is highly convenient for the user and has the great advantage of saving the power contract fee for the parking lot owner. In other words, an inexpensive and simple charging station can be installed in a parking lot without installing an expensive and highly functional charging station that is less cost-effective, which contributes to the development of social infrastructure such as the expansion of charging infrastructure. In other words, it is very effective for industrial use.

DESCRIPTION OF SYMBOLS 1 200V power supply 2 100V power supply 3 Main breaker for 200V 4 Main breaker for 100V 5 200V power supply line 6 100V power supply line 7 200V charging electromagnetic switch 8 100V charging electromagnetic switch
9 Electromagnetic switch for 200 V charging 10 Electromagnetic switch for 100 V charging 11, 12 Earth leakage breaker 13, 14 Charging stand 15, 16 Charging compartment 17, 18 Vehicle detection device 19, 20 Current detector 21 Control device 22 Current information signal Line 23 Receipt information signal line 24 Signal line to electromagnetic switch 25, 26 Charging start switch 27 Electromagnetic switch 28, 29 Switch part of electromagnetic switch
30, 31 Excitation coil terminal of electromagnetic switch
32 Exciting coil of electromagnetic switch 33 Smart relay 34 Logic circuit portion 35 of smart relay Analog input terminal 36 Digital input terminal 37 24V power supply connection terminal 38 Output terminal 39a to 39d Output contact 40 Power line 41, 42CT 43, 44 CT Rectifier circuit 45, 46 Current detector 47, 48 Current detector output contact 49a, 49b Digital input terminal 50 Charging power line 51, 52 Charging outlet, 53, 54 Charging start switch 55 24V power source 56-59 Charging electromagnetic Switch 60 to 63 Potential switch excitation circuit 60a to 63d Excitation power supply 64 Off-delay timer 65 OR circuit 66 Analog input (CT output) 66b Analog switch 67 AND circuit 68 AND circuit 69 Output 70 Digital input (Current detector output) )
72, 73 Logic circuit input 74, 76 Inversion circuit (NOT circuit)
75, 77, 82, 85 AND circuit 78, 79, 83, 86 On-delay circuit 80, 81 Contact output for 200V 84, 87 Contact output for 100V

Claims (2)

In a parking lot provided with charging stands for electric vehicles in a plurality of compartments of the parking lot, an electric circuit capable of selectively supplying either 200V or 100V to the two charging compartments for the charging stands. An electromagnetic switch that can turn on and off the supply of power by the electric circuit, a vehicle detection device that detects that an electric vehicle has entered the passenger compartment, and a charging current for the electric circuit when charging is being performed. a current detector for detecting, the total of four signal outputs of and the current detection device for two cabin of the vehicle detection device for two cabin as an input, and supplies the 2 cabin based on the input signal One relay device capable of programming capable of configuring a logic circuit for selecting an electric circuit of 200V or 100V is provided, and two vehicle compartments are provided depending on the states of four output contacts of the relay device capable of programming. Parking of the charging device that features operating the electromagnetic switch for selectively introducing electrical circuit supplying 200V or 100V in charging station.
The charging device of the parking lot according to claim 1, wherein an ON signal of a charging start switch installed at each charging station is used as an input signal of a programmable relay device capable of configuring a logic circuit for selecting an electric circuit of 200V or 100V. And a total of four outputs of the current detection device for detecting a charging current flowing in each electric circuit.