DE102010063790A1 - Charging station for e.g. charging energy storage of electric vehicle, has communication interface communicating charging parameter and/or monitoring parameter, where station produces and changes parameter based on preset requirements - Google Patents

Abstract

The station (10) has a communication interface (24) communicating a charging parameter and/or a monitoring parameter. The station produces andchanges the charging parameter and/or the monitoring parameter based on preset test requirements. A pilot signal module (25) produces a pilot signal with a preset frequency, a duty cycle and a voltage level relative to an earth conductor voltage based on the test requirements, and signalizes the signal at a terminal (24-1) of the interface. A switch unit (22) partially electrically couples and decouples an energy supply input (12) and a load output (14). An independent claim is also included for an adapter device comprising a power connector element for a charging station.

Description

The invention relates to a charging station, an adapter device and a charging system.

Due to low CO2 emissions, interest in battery-powered vehicles, especially hybrid-powered vehicles, is growing rapidly. Further spread and acceptance of electric and / or hybrid vehicles can be supported inter alia by the fact that sufficient charging options for the electric and / or hybrid vehicles are available. In this case, however, it should also be ensured that the charging of an energy store of the electric and / or hybrid vehicle can be carried out sufficiently reliably for a non-specialist.

The objects on which the invention is based is to provide a charging station, an adapter device and a charging system, which enable a reliable charging of an energy store of an electric and / or hybrid vehicle.

The object is solved by the features of the independent claims. Advantageous developments of the invention are characterized in the subclaims.

According to a first aspect, the invention is characterized by a charging station for an electric and / or hybrid vehicle, which comprises a power supply input, a load output and a communication interface. At least one charging parameter and / or at least one monitoring parameter can be communicated via the communication interface parts. The charging station is designed to generate and / or to change the at least one charging parameter and / or monitoring parameter depending on predetermined test requirements.

The charging station can be used to charge an energy storage of an electric and / or hybrid vehicle. Furthermore, the charging station can be used to test and / or to check whether a vehicle charging interface of the electric and / or hybrid vehicle meets predetermined requirements, for example, in relation to statutory regulations and / or standards. The test requirements can be specified, for example, on the basis of legal regulations and / or standards. The charging station enables various vehicle charging interfaces of electric and / or hybrid vehicles to be tested and / or tested. The vehicle charging interfaces may be different, for example due to different standards. Generating and / or changing the respective charging parameters and / or the respective monitoring parameters makes it possible to test the vehicle charging interface of the electric and / or hybrid vehicle for different operating ranges. Operating areas of the vehicle charging interface can be tested and / or tested, in which given safety functions of the electric and / or hybrid vehicle can trigger one or more predetermined reactions. An evaluation of the respective reaction of the electric and / or hybrid vehicle makes it possible to judge whether the charging station meets the specified requirements.

The testing and / or testing of the vehicle charging interface of the electric and / or hybrid vehicle can be very simple, for example, without knowledge of a precise design of the charging station and / or a manual manipulation of the charging station. This makes it possible to reduce costs and can contribute to enabling a reliable and safe charging of the energy storage of the electric and / or hybrid vehicle.

In an advantageous embodiment, the charging station has a pilot signal module, which is designed to generate a pilot signal depending on the test requirements with a predetermined frequency, a predetermined duty cycle and a predetermined voltage level based on a protective conductor voltage and to signal at a first terminal of the communication interface. The pilot signal can be used to communicate the vehicle charging interface of the electric and / or hybrid vehicle with a maximum permissible AC charging current or DC charging current of the charging station. It can be provided that the vehicle charging interface of the electric and / or hybrid vehicle is designed to change the voltage level of the pilot signal as a function of an operating state of the energy store of the electric and / or hybrid vehicle, for example by adapting a vehicle-side input resistance for the pilot signal. The pilot signal module can be designed to generate different pilot signals, each with different frequencies, duty cycles and voltage levels, and thus to signal the vehicle charging interface of the electric and / or hybrid vehicle various maximum permissible AC charging currents or DC charging currents. This makes it possible to test and / or to check whether the vehicle charging interface of the electric and / or hybrid vehicle correctly evaluates the pilot signal.

In a further advantageous embodiment, the charging station comprises a circuit unit which has a first, second, third and fourth connection node and is designed to evaluate a first resistance network when it is electrically coupled to the first and second connection nodes and depending on the evaluation result and / or the test requirements a second Resistance network between the third and fourth connection node set. Modern vehicle charging connectors may have a predetermined resistance network. The circuit unit allows, when the vehicle charging connector is suitably electrically coupled to the charging station, to evaluate this resistor network of the vehicle charging connector and to set the second resistor network depending on the evaluation result and / or the test requirements. Through the appropriate electrical coupling of the vehicle charging plug to the charging station, the second resistor network may replace the first resistor network such that the vehicle charging interface recognizes the second resistor network as a resistor network associated with the vehicle charging plug. Advantageously, it can be tested, for example by a predetermined variation of resistance values of the second resistor network, whether the vehicle charging interface is working without errors. The resistor network of the vehicle charging connector may include a switch. Closing of the switch can be evaluated as a predetermined resistance change.

In a further advantageous refinement, the first connection node of the circuit unit is electrically coupled to a second connection of the communication interface, the second connection node of the circuit unit to the third connection of the communication interface, the fourth connection node of the connection unit to a fourth connection of the communication interface and the third connection node to a protective conductor , This allows the appropriate coupling of the vehicle charging plug with the charging station.

In a further advantageous embodiment, the charging station has a switch unit, which is designed and arranged to at least partially electrically decouple and / or couple the power supply input and the load output. The switch unit advantageously makes it possible to interrupt a current flow in one or more conductors during charging of the energy store of the electric and / or hybrid vehicle.

In a further advantageous embodiment, the charging station comprises a transformer, which is arranged and configured to convert a predetermined first conductor voltage of a respective phase conductor into a second predetermined second conductor voltage. This advantageously makes it possible to simulate charging on different power grids and thus to test, for example, a voltage compatibility of the vehicle charging interface. For example, it is possible to connect the charging station to a power supply network with 230 V and to output a conductor voltage of approximately 120 V on the output side.

In a further advantageous embodiment, the transformer is designed such that a conversion ratio of the transformer can be specified.

In a further advantageous embodiment, the charging station has a current measuring unit, which is designed and arranged to detect a respective current of one or more conductors and / or of signals which may be present at the terminals of the communication interface. This makes it possible to detect a time profile of the current of the conductors and / or of the signals applied to the connections of the communication interface, for example the current of the pilot signal and / or of a proximity signal.

In a further advantageous embodiment, the charging station has a voltage measuring unit which is designed and arranged to detect in each case a voltage of the one or more conductors and / or of the signals which may be present at the terminals of the communication interface. This makes it possible to detect a time profile of the voltage of the conductors and / or, for example, of the pilot signal and / or of the proximity signal.

In another. advantageous embodiment, the charging station is arranged in a housing. This can make a contribution to simplify operation of the charging station.

According to a second aspect, the invention is characterized by an adapter device for a charging station, in particular the charging station according to the first aspect. The adapter device includes a power connector element having a plurality of power terminals, a signal connector element having a plurality of signal terminals, and a vehicle charging connector element. The vehicle charging connector element 130 includes multiple charging ports and control ports and a resistor network. The resistor network has a first node and a second node. The charging terminals of the vehicle charging connector element are predetermined electrically coupled to the power terminals of the power connector element and the control terminals and the first node and the second node of the resistor network of the vehicle charging connector element are predetermined electrically coupled to the signal terminals of the signal connector element. This advantageously makes it possible for different vehicle charging plugs to be connected to the charging station by means of the adapter device and for the charging station to test and / or evaluate the various vehicle charging plugs. Furthermore, this allows that with the charging station, the vehicle charging interface of an electric and / or hybrid vehicle can be tested independently of a given vehicle charging connector. The adapter device may comprise, for example, a first vehicle charging connector element or a second vehicle charging connector element, for example a vehicle charging connector element according to the standard SAE 31772 or according to the IEC 62196 Standardization proposal.

According to a third aspect, the invention is characterized by a charging system having a charging station according to the first aspect and an adapter device according to the second aspect. The power plug element of the adapter device is predetermined electrically coupled to the load output of the charging station and the signal plug element of the adapter device is predetermined electrically coupled to the communication interface of the charging station.

Embodiments of the invention are explained below with reference to the schematic drawings.

It shows:

1 a block diagram of a charging system.

Elements of the same construction or function are provided across the figures with the same reference numerals.

The charging system 1 ( 1 ) includes a charging station 10 and an adapter device 100 ,

The charging station 10 has a power supply input 12 on. The power supply input 12 For example, a multi-phase plug, such as a CEE plug, may include a neutral terminal, a protective conductor terminal, and first, second and third phase conductor terminals. Alternatively, the power supply input 12 For example, have only one phase conductor connection, for example, for an AC operation. The power supply input 12 Can be used, the charging station 10 to be electrically coupled to a power supply network.

The charging station 10 also has a load output 14 on. The load output 14 For example, a multi-phase socket, for example, have a CEE socket corresponding to the CEE plug. Alternatively, it is possible that the load output 14 only one to the phase conductor terminal of the power supply input 12s Having corresponding phase conductor connection, in particular when the power supply input 12 has only one phase conductor connection.

The charging station 10 can have a power path 16 have the power supply input 12 and the load output 14 given electrically coupled. The performance path 16 may comprise a plurality of conductors, for example a neutral conductor N, a protective conductor PE and a first phase conductor L1 and / or a second phase conductor L2 and / or a third phase conductor L3.

The charging station 10 can one in the power path 16 arranged fuse unit 18 comprise a protective switch unit and / or a surge arrester unit. The circuit breaker unit may be configured to provide electrical coupling between the power supply input 12 and the load output 14 at least partially interrupt if a current flowing in at least one of the conductors exceeds a predetermined limit. The surge arrester unit can be designed to limit a voltage which is applied to at least one of the conductors, if the voltage exceeds a predetermined voltage limit value.

Furthermore, the charging station 10 a transformer 20 arranged and configured to convert a predetermined first conductor voltage of the respective phase conductor in a second predetermined second conductor voltage with respect to the neutral conductor N. Further, the transformer 20 be formed such that a conversion ratio of the transformer 20 can be specified, for example, depending on a given control signal. For example, it can be provided that the transformer 20 For example, a voltage conversion of 240 V on the input side to 120 V on the output side or a voltage conversion of 230 V on the input side to 120 V on the output side is possible. Furthermore, it can be provided that the transformer 20 a bypass circuit, so that the first conductor voltage at the input of the transformer 20 equal to the second conductor voltage at the output of the transformer 20 can be.

The charging station 10 can one in the power path 16 arranged switch unit 22 which is formed, the power supply input 12 and the load output 14 at least partially electrically decoupled and / or to couple, for example, depending on a control signal. For this purpose, the switch unit 22 For example, have four switches, one for the respective phase conductors L1, L2, L3 and one for the neutral conductor N. The respective switch can be arranged in the respective conductor and be configured to electrically couple the respective conductor in a first switching position and in one second switching position to decouple the respective conductor electrically.

The charging station 10 can be a communication interface 24 via which at least one charging parameter and / or at least one monitoring parameter can be communicated, wherein the charging station 10 is designed to generate and / or change the at least one charging parameter and / or monitoring parameters depending on predetermined test requirements.

The charging station 10 can be a pilot signal module 25 configured to generate a pilot signal depending on the test requirements with a predetermined frequency, a predetermined duty cycle and a predetermined voltage level based on a protective conductor voltage and at a first terminal 24_1 the communication interface 24 to signal. In this case, the voltage level can be in the range of ± 12 V, for example with respect to the protective conductor potential. The duty cycle can be varied in a range of 0 to 100 and the frequency in a range of ± 20% relative to a reference frequency. The reference frequency may be 1 kHz, for example. The pilot signal may, for example, have a source internal resistance with a value of approximately 100 kOhm. A vehicle charging interface of the electric and / or hybrid vehicle may be configured to change the voltage level of the pilot signal, depending on an operating state of the energy store of the electric and / or hybrid vehicle. This can be done for example by a vehicle-side adjustment of an input resistance of the vehicle interface. The charging station 10 can be configured to detect the voltage level of the pilot signal, for example, with respect to the protective conductor voltage and to detect which operating state of the energy storage of the electric and / or hybrid vehicle.

Furthermore, the charging station 10 a circuit unit 26 have a first 26_1 second 26_2 , third 26_3 and fourth connection node 26_4 is and is formed, a first resistor network when it is electrically connected to the first 26_1 and second connection node 26_2 is coupled, evaluate and depending on the evaluation result and / or the test requirements, a second resistor network between third 26_3 and fourth connection node 26_4 adjust. Here, the first connection node 26_1 the circuit unit 26 with a second connection 24_2 the communication interface 24 , the second connection node 26_2 the circuit unit 26 with a third connection 24_3 the communication interface 24 , the fourth connection node 26_4 the circuit unit 26 with a fourth connection 24_4 the communication interface 24 and the third connection node 26_3 the circuit unit 26 be electrically coupled to the protective conductor PE. The circuit unit 26 may include one or more controllable resistors, a switch and, for example, an analog-to-digital converter. Furthermore, the first connection node 26_1 For example, be electrically coupled to a DC voltage source having a predetermined internal resistance. About the fourth connection node 26_4 Thus, for example based on the protective conductor voltage, a proximity signal from the charging station 10 be signaled. It can be provided that the vehicle charging interface of the electric and / or hybrid vehicle and / or the charging station 10 can evaluate the proximity signal.

The charging station 10 may have one or more current measuring units. For example, the charging station 10 a first current measuring unit 28a formed and arranged, a respective current of one or more conductors of the power path 16ES capture. The charging station 10 can a second 28b and / or third current measuring unit 28c which is designed and arranged to detect the current of the signals present at the terminals of the communication interface 24 can be present.

Furthermore, the charging station 10 have one or more voltage measuring units. For example, the charging station 10 a first voltage measuring unit 30a formed and arranged, a respective voltage of one or more conductors of the power path 16 capture. The charging station 10 can a second 30b and / or a third voltage measuring unit 30c configured to detect a voltage of the signals present at the terminals of the communication interface 24 can be present.

The charging station 10 may comprise a control unit, for example via a bus interface, for example a CAN bus, with one or more circuit components of the charging station 10 is electrically coupled, for example with the switch unit 22 and / or the circuit unit 26 , the pilot signal module 25 , the current measuring unit, the voltage measuring unit and / or the transformer 20 , The control unit may be formed, the respective circuit components of the charging station 10 in such a way that the respective charging parameters and / or monitoring parameters and / or a phase conductor current and / or a phase conductor voltage can be generated and / or changed as a function of the predetermined test requirements. Furthermore, the control unit may be designed, for example via the bus interface measurement data, for. B. measuring data of the current measuring units to capture and / or store. The control unit may have a further bus interface. The control unit can, for example, be electrically coupled to an external measuring unit and / or via this further bus interface an external control unit. This allows, for example, the measurement data, charge parameters and / or monitoring parameters of the charging station 10 evaluated in conjunction with recorded data of the electric and / or hybrid vehicle in the external control unit.

The charging station 10 For example, it is electrically coupled to the adapter device 100 , The adapter device 100 can be a power plug element 110 with multiple power connections, a signal connector element 120 with multiple signal connections and a vehicle charging connector element 130 include. The vehicle charging connector element 130 may comprise a plurality of charging terminals and control terminals and a resistor network having a first node and a second node, wherein the charging terminals are predetermined electrically coupled to the power terminals of the power connector element 110 and the control terminals as well as the first node and the second node of the resistor network are predetermined electrically coupled to the signal terminals of the signal plug element 120 , The power plug element 110 may, for example, have the CEE plug. The vehicle charging connector element 130 For example, a plug element according to the standard SAE J1772 exhibit. The power plug element 110 the adapter device 100 can be preset electrically coupled to the load output 14 the charging station 10 and the signal connector element 120 the adapter device 100 can be preset electrically coupled to the communication interface 24 the charging station 10 ,

LIST OF REFERENCE NUMBERS

1

charging system

10

charging station

12

Power supply input

14

load output

16

power path

18

backup unit

20

transformer

22

switch unit

24

Communication Interface

24_1

first connection of the communication interface

24_2

second connection of the communication interface

24_3

third connection of the communication interface

24_4

fourth connection of the communication interface

25

Pilot signal module

26

circuit unit

26_1

first connection node of the circuit unit

26_2

second connection node of the circuit unit

26_3

third connection node of the circuit unit

26_4

fourth connection node of the circuit unit

28a

first current measuring unit

28b

second current measuring unit

28c

third current measuring unit

30a

first voltage measuring unit

30b

second voltage measuring unit

30c

third voltage measuring unit

100

adapter device

110

Power connector element

120

Signal connector element

130

Vehicle charging connector element

L1

first phase conductor

L2

second phase conductor

L3

third phase conductor

N

neutral

PE

protective conductor

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited non-patent literature

• SAE 31772 [0017]
• IEC 62196 [0017]
• SAE J1772 [0036]

Claims (12)

Charging station ( 10 ) for an electric and / or hybrid vehicle comprising: - a power supply input ( 12 ) - a load output ( 14 ) and - a communication interface ( 24 ) can be communicated via the at least one charging parameter and / or at least one monitoring parameter, wherein the charging station ( 10 ) is designed to generate and / or change the at least one charging parameter and / or monitoring parameter depending on predetermined test requirements. Charging station ( 10 ) according to claim 1, which is a pilot signal module ( 25 ), which is designed to generate a pilot signal depending on the test requirements with a predetermined frequency, a predetermined duty cycle and a predetermined voltage level with respect to a protective conductor voltage and at a first terminal ( 24_1 ) of the communication interface ( 24 ). Charging station ( 10 ) according to claim 1 or 2, comprising a circuit unit ( 26 ), a first ( 26_1 ), second ( 26_2 ), third ( 26_3 ) and fourth connection node ( 26_4 ) and is configured to connect a first resistor network when it is electrically connected to the first ( 26_1 ) and second connection node ( 26_2 ) and, depending on the evaluation result and / or the test requirements, a second resistance network between the third ( 26_3 ) and fourth connection node ( 26_4 ). Charging station ( 10 ) according to claim 3, wherein the first connection node ( 26_1 ) of the circuit unit ( 26 ) with a second connection ( 24_2 ) of the communication interface ( 24 ), the second connection node ( 26_2 ) of the circuit unit ( 26 ) with a third connection ( 24_3 ) of the communication interface ( 24 ), the fourth connection node ( 26_4 ) of the circuit unit ( 26 ) with a fourth connection ( 24_4 ) of the communication interface ( 24 ) and the third connection accounts of the circuit unit ( 26 ) is electrically coupled to a protective conductor (PE). Charging station ( 10 ) according to one of the preceding claims, comprising a switch unit ( 22 ), which is designed and arranged, the power supply input ( 12 ) and the load output ( 14 ) at least partially electrically decouple and / or to couple. Charging station ( 10 ) according to one of the preceding claims, comprising a transformer ( 20 ) which is arranged and configured to convert a predetermined first conductor voltage of a respective phase conductor into a second predetermined second conductor voltage. Charging station ( 10 ) according to claim 6, wherein the transformer ( 20 ) is designed such that a conversion ratio of the transformer ( 20 ) can be specified. Charging station ( 10 ) according to one of the preceding claims, comprising a current measuring unit which is designed and arranged, a respective current of one or more conductors and / or of signals which are present at the connections of the communication interface ( 24 ) to capture. Charging station ( 10 ) according to one of the preceding claims, which has a voltage measuring unit which is formed and arranged, in each case a voltage of the one or the conductors and / or of the signals which are present at the connections of the communication interface ( 24 ) to capture. Charging station ( 10 ) according to one of the preceding claims, which is arranged in a housing. Adapter device ( 100 ) for a charging station ( 10 ) comprising: - a power plug element ( 110 ) with several power connections, - a signal plug element ( 120 ) having a plurality of signal terminals and - a vehicle charging connector element ( 130 ) having a plurality of charging terminals and control terminals and a resistor network having a first and second nodes, the charging terminals of the vehicle charging connector element ( 130 ) are electrically coupled to the power terminals of the power connector element ( 110 ) and the control terminals and the first node and the second node of the resistor network of the vehicle charging connector element (FIG. 130 ) are electrically coupled to the signal terminals of the signal connector element ( 120 ). Charging system ( 1 ) comprising: - a charging station ( 10 ) according to one of the preceding claims 1 to 10, - an adapter device ( 100 ) according to claim 11, whose power plug element ( 110 ) is electrically coupled to the load output ( 14 ) of the charging station ( 10 ) and its signal plug element ( 120 ) is electrically coupled to the communication interface ( 24 ) of the charging station ( 10 ).

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