WO2012045383A2

WO2012045383A2 - Road lighting system with charging stations for electric vehicles

Info

Publication number: WO2012045383A2
Application number: PCT/EP2011/004519
Authority: WO
Inventors: Robert Renner; Siegfried Plöbst; Maximilian Faltlhauser; Stephan Beck
Original assignee: Robert Renner; Ploebst Siegfried; Maximilian Faltlhauser; Stephan Beck
Priority date: 2010-10-06
Filing date: 2011-09-08
Publication date: 2012-04-12
Also published as: WO2012045383A3; DE102010047676B4; DE102010047676A1

Abstract

In a road lighting system with a plurality of light poles (2a, 2b, 2c...) which are arranged along a road and a lighting cable (5) which is laid underground from one light pole to another and to which the lights (3a, 3b, 3c...) of the light poles (2a, 2b, 2c...) are connected, at least some of the light poles (2a, 2b, 2c...) are embodied as charging stations (15a, 15b, 15c...) for electric vehicles (8). A voltage which is raised compared to the mains voltage is applied to the lighting cable (5) which is laid underground. The charging station (15a, 15b, 15c...) has a voltage transformer (13) which lowers the raised voltage to the mains voltage.

Description

Street lighting system with charging stations for electric vehicles

The invention relates to a street lighting system according to the preamble of claim 1.

Street lighting systems are part of virtually all municipal roads. The connection of the street lighting of a road train is generally carried out with an underground installed lighting cable, which is connected via a control box with the general power supply.

It is already known to use the light poles of a street lighting as a power supply device for external consumers (see, for example, DE 10 2007 038 245 AI). Although as a consumer so that, for example, a Christmas lights or a mobile phone and possibly also the battery smaller

Electric vehicles are charged to charge larger

Electric vehicles, such as a battery-powered car, but the amperage for which the lighting cable is approved, not enough, at least not in a sufficient period of a few hours, especially not if the

Street lighting is switched on. The latter also applies to those designed as charging stations for battery-powered cars

Street lighting light poles to GB 2465045 A.

Since the underground laying new, approved for a higher amperage underground cable is associated with considerable effort, for example, according to JP 2009 065 785 A instead of a ground cable, an aerial cable is used, which is attached to the upper end of the masts to the charging station for an electric vehicle with one

to supply sufficient charging current. However, such an air line is connected as an additional line with corresponding costs and also prone to failure. In addition, air ducts represent a significant impairment of the cityscape. The object of the invention is, therefore, existing

Retrofit street lighting systems with little effort to efficient charging stations for electric vehicles.

This is achieved according to the invention with the characterized in claim 1 street lighting system.

With the invention is the different interests of all

Participants met. These are in particular the interests of the electric car drivers, the owner or operator of the

Street lighting and that of the electricity supplier or network operator. Electric car drivers can load their electric cars as quickly and cheaply as possible. The owners and operators of street lighting can use the street lighting with low investment costs for the use of the street lighting system as charging stations

extend without compromising the quality of the street lighting

decrease. The electricity suppliers or grid operators can control the largest possible power requirements of the end customer in order to optimize the power grid load technically and economically.

In the street lighting system according to the invention, the subterraneously laid lighting cable is subjected to an increased voltage relative to the mains voltage. So no new lighting cable needs to be laid. Due to the increased voltage compared to the mains voltage, which is applied to the underground laid lighting cable, a correspondingly increased power can be transported to the charging station.

The battery of an electric vehicle, which supplies electric power to the electric motor, is usually under

Interconnection of a rectifier to the mains voltage

connectable to any charging stations, for example, to the outlet of a private household, a garage or the like. to connect for charging.

According to the invention, therefore, the light poles of

Street lighting system, which are designed as a charging station, each provided with a voltage converter, which increased the

Tension with which the underground laid lighting cable is again reduced to mains voltage. That is, at the charging station on the light pole is so like the sockets of a private household, the mains voltage, for example, in Europe and most areas of the earth is 230 volts.

The voltage converter may be a transformer, for example a power transformer, but also an electronic switching power supply.

With the opposite voltage to the mains voltage, with which the current is transported in the lighting cable, the

Lighting cable acted upon at a switching point. The

Switching point may for example be a transformer station, which is connected via a high voltage line to the power generator.

Preferably, however, the switching point is formed by the distributor or the switch box of the street lighting system, which switches the lights of one or more streets and powered by the lighting cable with power. To act on the underground laid lighting cable with a relation to the mains voltage increased voltage, the switching point preferably has a voltage converter, so for example, a transformer, possibly as a Spartrafo, or z. B. designed as a voltage converter switching power supply.

The lamp can be attached to the top of the light poles, or hang on a mounted example, on the road rope that runs for example between two light poles.

The underground lighting cable is usually formed by a multi-core cable, in particular by a

Three-phase (three-phase) (LI, L2 and L3) three-phase cables and one neutral conductor (N) and one protective conductor (PE), whereby the neutral conductor and the protective conductor can be combined into a single conductor (PEN).

Thus the power supply of the lamp when charging the

Electric vehicle is not affected, preferably only one core or part of the wires, ie the head of the

Lighting cable used to charge the electric vehicle, so that the one or the other head of the lighting cable for

Power supply of the lights of the street lighting system

can be used. The one or more connected to a charging station to the light poles conductor of the lighting cable can then be clamped with a voltage converter, for example in the control box over the mains voltage and clamped down to mains voltage with the voltage converter to the charging station to the respective light tower.

One or more sockets may be connected to the voltage converter provided on the light tower. This can be connected to another electric vehicle, if at a

Electric vehicle, which is connected to another socket of the light pole, the charging process is already completed.

It is also possible to provide several charging stations with one or more sockets on a light tower.

As a socket is preferably a socket for standardized

Charging plug used by electric car, especially one

Three-phase connector for data communication at least one

Signal contact, for example, a Mennekes connector, which is standardized as VDE-AR-E2623-2-2 and submitted for the next version of the international standard IEC 62196. It is a 7-pin round connector that allows connection to the 400 volt three-phase network in Europe (specified up to 63 ampere charging current). In addition, it is also possible to charge single-phase alternating current with 230 volts.

If an electric vehicle is to be connected to the charging station on a light pole for charging the battery, the user can the electricity supplier, for example via mobile phone, with a PIN code, an electronic card or the like. invite the

unlock the charging station.

Preferably, the plugging and unlocking triggers the

Charging not automatically off. This is only by a

interactive charging control system, the different needs of the driver (immediate loading, charging to a certain date or charging at the best possible conditions, ect.) with the interests of electricity suppliers or network operators (charging at times when the network is charged as little as possible and the electricity can be purchased as cheaply as possible) linked and optimized according to a "smart grid"

For example, an electric car driver who comes home from work in the evening and inserts his car for charging and z. For example, using a charge profile until tomorrow morning to schedule a specific time, his car gets charged in the slow-moving time past midnight and early in the morning.

For this purpose, each charging station preferably has a remote-controlled

Unlock device, for example, by a

remote controlled switch is formed. The remote control can be done for example via radio or via the mains via

Powerline Communication.

To prevent charging the battery

Electric vehicle at the charging station on a light pole of the

Street lighting system a third party unauthorized charging

interrupts, the charging station may be provided with a locking device with which the detachable connection for connection of the electric vehicle to the charging station can be locked. The detachable connection may be, for example, a plug which is in a

Plug the charging station is plugged. The locking can be done electromechanically.

So that only the loader authorized the locking device

can unlock, the locking device can be controlled, for example, by a receiver, which communicates with a transmitter that operates the claimant. The receiver can have a memory in which the authorization data of the authorized person is stored. Thus, e.g. an RFID transponder can be used for actuating the unlocking device, for example a car key provided with such a transponder.

Furthermore, the light poles provided with a charging station can be provided with an optical display, for example one

red / green LED to indicate free and occupied charging stations on the light poles of a street from afar. Since the light poles and thus the charging stations are generally arranged on the side facing away from the roadway side of the sidewalk, the charging cable, which has the charging station with the

Electric vehicle connects, be led over the sidewalk. This can be attached to the light pole at a height that does not hinder pedestrians, a support arm to which the charging cable is attached. The support arm can be hinged to the light pole or pivotally mounted away from the sidewalk on the light pole. It is also possible in the curb on the roadside one or more in the

To install spaced sockets, which are powered by a cable from the light pole or its lighting cable with power. Several sockets can not be used simultaneously. They are switched accordingly. However, several sockets are there to create as many charging parking spaces, so that the charging station can not be blocked by a parked vehicle.

Under voltage is to be understood in particular the voltage of the public power grid. However, the invention is also applicable to other power grids. Furthermore, street lighting not only includes the light poles directly in the street, but also

for example, light poles in parking lots.

The street lighting system according to the invention preferably has a central control device for controlling the power supply to the charging stations and the lights of the light poles. However, the subterraneously laid lighting cable is on a certain

Maximum current load designed, d. H. only a certain maximum current can be supplied via the lighting cable. So that

Street lighting can be used without restriction, it is therefore preferably provided that of the supplied via the lighting cable power when the street lighting

Charging stations only the amount of electricity is supplied by the

Street lighting is not consumed.

Furthermore, the electricity consumed for charging the electric vehicles must be measured and billed via a clearing house. For network control, communication modules, such as GSM Modules a preferred type of reciprocal

Information transfer. These modules are called

Controls in the combined lighting and

Electric filling station integrated. The integration of the

Control element is preferably modular, in order to easily expand and offset the operating cost-intensive communication modules as needed. The communication modules control both the sockets of the charging stations and the street lighting. The following functions can be used with it

Switching the street lighting on and off, regulating or dimming the street lighting, switching the sockets of the charging stations on and off, regulating the sockets of the charging stations

Charging stations, information transmission of the state of charge of

connected electric vehicle, information transmission of the

Electricity consumption and if necessary further transmission

Information .

In order to be able to use the socket, the person entitled to charge needs a mobile terminal, for example a mobile telephone or a control unit integrated in the vehicle with a communication module, that is to say a GSM module in particular.

The loader uses his mobile terminal to contact the clearing house by telephone, whereby he is identified by his telephone number stored there.

Each charging station or at a charging station with multiple sockets each outlet are alphanumeric identification data, eg. B. associated with a phone number, which are visibly attached to the charging station. The identification data or the telephone number of the respective socket are communicated by the loader, where appropriate, with the desired charging profile with his mobile terminal of the clearing house, which the respective socket

unlocks.

For this purpose, the clearing house is the central control device

assigned, by which the switch assigned to the socket is actuated, and remotely via the communication or GSM module, which is associated with the socket. The call suppression must not be switched on at the mobile terminal. In this way the creditor is identified by the clearing house and the used electricity can be charged to him. The clearing house forwards the electricity fee received from the loader to the electricity supplier of the street lighting and charges the control energy costs to the grid operator.

The invention thus also encompasses a method for controlling the charging of the battery of the electric vehicles with the light masts of the street lighting system designed as a charging station.

The invention is particularly intended for electric cars. In order to supply the electric cars with a high charging current and as far as possible to shorten the charging time, the charging therefore preferably takes place according to the following sequence algorithm:

The electric car is plugged into the socket of the charging station of the respective light pole. The motorist or other loader calls with his mobile terminal to the clearing house and tells her the identification number or the phone number of the socket. The telephone number of the mobile terminal of the electric car driver is deposited with the clearing house, so that the electric car driver or the right to charge can be identified via the telephone number of his mobile terminal, which may not be suppressed.

About the charging plug of the electric car, which has signal contacts, the clearing point of the state of charge of the battery of the electric car and the maximum amount of energy required are transmitted.

The electric car driver then selects a charging profile via his mobile terminal under the following charging profiles, each of which can have its own electricity tariff. The loading profiles have the following ranking, with the first loading profile having the highest tariff:

Charging profile "emergency basis" loading: The electric car should be loaded with a limited minimum amount of electricity in order, for example, to reach the nearest service station

Electric car has loaded less than the defined minimum amount of electricity. The electric car is only up to defined minimum amount of electricity loaded. The loading profile "Emergency Base" loading takes precedence over all loading profiles except for the loading profile "Immediate" loading.

Charging profile "Immediate" loading: The electric car should be charged as fast as possible.

Charging profile "time" loading: The loader is next to the

Information of the charging profile a time until when he

Electric car wants to have fully loaded. The entered period must be a multiple, for example, two to three times as long as the theoretical loading period for "Immediate" loading

Charging profile "time" charging will be supplemented by any existing power grid bottlenecks and others at the same

Street lighting system infected electric cars with priority charging profiles limited. "Time" loading is only possible if the period is greater than the multiple of the theoretical one

Charging period including the existing power grid bottlenecks and the already priority connected charging profiles. The time may be displayed to the loader as to how long

Electric car must be plugged in to use the charging profile "time" store.

Charging profile "Cheap" -Laden: There is no time limit until when the car should be charged, at least a very long period of, for example, three or four days.

As a further charging profile, the "time part" loading may be provided, which is a sub-profile of the "time" charge and is not aimed at fully charging an electric car but only at partial charging in a certain time. The amount of electricity to load becomes the variable input size, not the time.

In the clearing house, the entries of the electric car driver are verified. Furthermore, it is determined how many vehicles are already registered with which charging profiles, which multiples of the theoretical Mindestladezeitraums from this information and the power requirement of the electric cars for "time-loading" results, whether the electric car driver with his phone number registered correctly etc. Only possible and permitted loading profiles are accepted as input.

The load profiles "Emergency Base" store and "Immediate" store are processed according to the principle "First-Come-First-Serve." The loading profiles "Time" store and "Cheap" store are optimized. Shop and "cheap" store are technically the same from the point of view of the process flow algorithm. "Cheap" store has only a much longer loading period defined by the time limit.

The clearinghouse is constantly optimizing. There, all electricity profiles of electric car drivers are bundled. In addition, the network operators make continuously available preferences for the load distribution of the clearing house available. In this way, a "smart grid" system is realized.

That is, because the over the lighting cable to charge the

Electric vehicles supplied amount of electricity is limited, especially when the street lighting is turned on, not all connected to the lighting cable charging stations, to the

Electric vehicle is connected to the store, and if one

Charging station has multiple sockets are connected to the electric vehicles for charging, by the clearing house or the central control device is not the same amount of electricity simultaneously

fed, but the supply takes place in a rank and

Order determined by the loading profiles. So z. B. only one or only part of these charging stations or sockets power or a larger amount of electricity than the other charging stations or sockets are supplied.

For safety reasons, the charging plugs must be removable or disconnectable. In order to curb abusive behavior, it must be ensured that no third party is plugged in by unauthorized unplugging or switching off a charging device

Electric cars can provide an advantage. In particular, it must be ruled out that by unauthorized unplugging or

Turning off an electric car charged for charging another can charge its electric car faster. This will be done

that achieves that in case of an abusive staking out or Turn off the earliest possible time of charging of other electric cars can only be the one where all other charged for charging electric cars would have been theoretically charged.

The invention is explained in more detail by way of example with reference to the attached drawing, the single figure of which schematically shows an embodiment of a charging station

Street lighting system shows.

Thereafter, the street lighting system has a plurality of along a street 1 arranged light poles 2a, 2b, 2c ..., which are provided with lights 3a, 3b, 3c .... The light masts 2a, 2b, 2c are shown with parts broken away.

For electrical supply of the lights 3a, 3b, 3c of

Street lighting system is a switch box 4 is provided, which is connected to the general power supply with the mains voltage (230 V) to the transformer station T.

To the switch box 4 or distributor a laid in the street 1 underground lighting cable 5 is connected, which connects the switch box 4 with the lights 3a, 3b, 3c ... the light poles 2a, 2b, 2c ... the street lighting system.

Each light mast 2a, 2b, 2c ... has, as usual, a service opening 6 which can be closed, for example, by a door and which is frequently provided with a door in the case of the existing light masts. In order to form a charging station 15a, 15b, 15c ..., a socket 7 is provided in the service opening 6, to which the electric vehicle 8 with a cable 9 with a charging connector 10 can be connected. The

Service opening 6 and the components contained therein is only in the light mast 2a shown enlarged in the drawing

shown. The light masts 2b, 2c ... are corresponding

educated .

The lighting cable 5 is, as usual, as three-phase cable with three external conductors (phases) Li, L2 and L3 and a combined

Neutral and protective conductor PEN trained. The lighting cable 5 extends, as shown for the light mast 2a, from the ground up to the level of the service opening 6, on which, for example, a terminal strip 11 is located around the conductor LI to the socket 7 and in the case of the light pole 2a the conductor L2 to the To connect lamp 3a. As shown schematically, the lights 3a, 3b, 3c of the light poles 2a, 2b, 2c are alternately connected to the conductors L2 and L3.

The conductor LI of the lighting cable 5 is connected to the general network having a voltage of, for example, 230 volts via a voltage converter 12, whereby the voltage in the conductor LI is increased, for example, to 1000 volts.

As shown in the light tower 2a, the conductor LI is at all

Light masts 2a, 2b, 2c ... connected via a voltage converter 13 to a socket 7, whereby the increased voltage of e.g. 1000 volts at the socket 7 is stretched to the mains voltage of 230 volts down.

In the control box 4, the lines LI, L2 and L3 of

Lighting cable 5 each with a fuse 14a, 14b, 14c of e.g. 10 amps secured.

As shown in the light mast 2a, each voltage converter 13 is connected to the individual charging stations 15a, 15b, 15c via a switch 16 with the respective socket 7, which is part of a

preferably remote-controlled isolation device for the respective charging station 15a, 15b, 15c forms. A switch can also be in

Switch box on the low or high voltage side of the

Voltage converter 12 may be provided.

Instead of a socket 7, two or more sockets can be provided on a light pole 2a, 2b, 2c. It can the

Voltage converter 13 each light mast to be connected via a respective switch with the respective socket.

Also, the switch box 4 for street lighting as

Charging station with one or more plugs, remotely controlled

Unlock device, etc. may be formed, as indicated by the plug 17. In this case, the charging station may be formed on the control box 4 as a quick charging station. For this, the transformer station T a

Have voltage converter, which increases the voltage for the charging station on the control box accordingly. The voltage transformer of

Transformer T can thus the voltage converter 12 in the

Replace control box 4 and in turn, for. increase the voltage in the conductor LI to, for example, 1000 volts.

According to the invention, the onboard battery of a

Electric vehicle can be charged quickly and efficiently,

especially those of passenger cars, both at night and during the day parking at the roadside.

It is understood that the charging stations 15a, 15b, 15c ... on the light poles 2a, 2b, 2c ... may be provided with further facilities, in particular with electricity meters for detecting the energy supplied for charging the battery and facilities for billing them ,

Claims

claims

1. street lighting system with several along a street

arranged light poles (2a, 2b, 2c ...) and one of light pole to light pole buried underground lighting cable (5) to which the lights (3a, 3b, 3c ...) of the light poles (2a, 2b, 2c ... ) are connected, wherein at least a part of the light poles (2a, 2b, 2c ...) as a charging station (15a, 15b, 15c ...) for

Electric vehicles (8) is designed

characterized in that the underground laid

Lighting cable (5) is acted upon with respect to the mains voltage increased voltage and the charging station (15a, 15b, 15c ...) has a voltage converter (13) which reduces the increased voltage to mains voltage.

2. Street lighting system according to claim 1, characterized

characterized in that for the admission of the underground

laid lighting cable (5) with a relation to the

Mains voltage increased voltage one switching point with one

Voltage converter (12) is provided.

3. street lighting system according to claim 2, characterized

in that the switching point provided with the voltage converter (12) passes through the switch box (4) of the

Street lighting system is formed.

4. Street lighting system according to one of the preceding claims, characterized in that the laid underground

Lighting cable (5) is a three-phase three-conductor (LI, L2, L3) three-phase neutral and a PE or PEN combined neutral and PE conductor, with at least one outer conductor (LI) with an increased line voltage Voltage applied to a transformer (13) for reducing the increased voltage to mains voltage at the charging stations (15a, 15b, 15c ...) of the Light masts (2a, 2b, 2c ...) is connected, wherein at least one supplied with mains voltage outer conductor (L2, L3) of the lighting cable (5) to the lamp (3a, 3b, 3c ...) of the charging station (15a , 15b, 15c ...) provided light masts (2a, 2b, 2c ...) is connected.

5. street lighting system according to claim 3 and 4, characterized

in that a transformer (12) is provided in the control box (4) for increasing the voltage in the at least one outer conductor (LI) of the lighting cable (5).

6. Street lighting system according to one of the preceding claims, characterized in that a remote-controlled

Unlocking device for the charging stations (15a, 15b, 15c ...) is provided.

7. street lighting system according to one of the preceding claims, characterized in that the charging station (15 a, 15 b, 15 c ...) for locking the detachable connection to the connection of the

Electric vehicle (8) has a locking device.

8. Street lighting system according to one of the preceding claims, characterized by a central control device for

Control of the power supply to the charging stations (15a, 15b, 15c) and the lights (3a, 3b, 3c) of the light poles (2a, 2b, 2c), wherein of the over the underground laid lighting cable

supply current when the street lighting is switched on, the charging stations (15a, 15b, 15c) only the amount of electricity not consumed by the street lighting is supplied.

9. street lighting system according to claim 8, characterized

in that each charging station (15a, 15b, 15c) has at least one socket for the charging plug (10) of an electric vehicle (8), each outlet being visibly attached

Identification data are assigned and the central

Control device for unlocking the socket formed after notification of the identification data by a loader

10. street lighting system according to claims 6 or 9, characterized in that each charging station (15a, 15b, 15c) is provided with a communication module.

11. A method for controlling the charging of a battery for

Electric vehicles (8) with charging station (15a, 15b, 15c)

formed light poles (2a, 2b, 2c) a

Street lighting installation according to one of the preceding claims, characterized by the following steps:

- The loader sits down with his mobile device

contact a clearing house by telephone to identify him by his telephone number,

- The plugged into the socket (7) of the charging station (2 a, 2 b, 2 c)

Charging plug transmits the state of charge of the battery of the electric vehicle (8) to the clearing house and

- The loader dials in with his mobile device

Loading profile.