DE102021208808A1 - Method for electrically charging an electrical energy store of an at least partially electrically operated motor vehicle, computer program product and charging system - Google Patents

Abstract

The invention relates to a method for electrically charging an electrical energy store (2, 3, 4) of an at least partially electrically operated motor vehicle (5, 6, 7) by means of a charging system (1), in which a wired charging interface (8, 9, 10) of the charging system (1) is contacted with a charging socket of the motor vehicle (5, 6, 7) and in which the electrical energy store (2, 3, 4) is charged by means of mode 1 charging via the wired charging interface (8, 9, 10) is electrically charged, with a wireless communication connection (15) being established between an electronic computing device (11, 12, 13) of the motor vehicle (5, 6, 7) and a further electronic computing device (14) of the charging system (1) and energy being provided to the Charging system (1) provided by the further electronic computing device (14), taking into account one of the electronic computing device (11, 12, 13) and via the communication link (15) transmitted loading information (18) of the motor vehicle (5, 6, 7) is controlled. The invention also relates to a computer program product and a loading system (1).

Description

The invention relates to a method for electrically charging an electrical energy store of an at least partially electrically operated motor vehicle by means of a charging system, in which a wired charging interface of the charging system is contacted with a charging socket of the motor vehicle and in which the electrical energy store is charged by means of mode 1 charging via the wired charging interface is electrically charged. The invention also relates to a computer program product and a loading system.

So-called wall boxes and charging stations are already known from the prior art, which are required for charging or bidirectional charging per motor vehicle. Using this wall box or this charging station, however, only one motor vehicle can be charged or discharged at a time.

The DE 10 2013 000 981 A1 relates to a method for exchanging charging information between a charging station and a cash register system. For use in existing infrastructure, it is proposed: Receiving an energy meter reading comprising information on the amount of energy drawn at a charging station during a charging process from the charging station to a control center, subsequent transmission of at least the energy meter reading from the control center to a cash register system, receiving a release signal to release a Charging current in the charging station from the cash register system in the control center, subsequent transmission of at least the release signal from the control center 6 to the charging station 4.

The US2013/0043306 A1 describes a system and method for accessing charging capabilities of electric vehicle charging stations. According to one embodiment, a system can be provided. The system may include a computer processor. The system may also include memory operable to store computer-executable instructions operable to receive a readable code associated with an electric vehicle charging station and further receive a unique identifier associated with a associated with mobile device; and authorize a consumer associated with the mobile device to access charging functionality associated with the electric vehicle charging station based at least in part on the readable code and the unique identifier.

The U.S. 2014/0266047 A1 relates to a charger for charging the battery of an electric vehicle, comprising at least one connection for exchanging electrical power or data with a vehicle during a charging session, a first data communication means for storing information relating to the charging session in a data storage location, a second data communication means for transmitting a reference to obtaining access to the data storage location containing the information regarding the charging session to an external device.

The object of the present invention is to create a method, a computer program product and a charging system, by means of which charging of an electrical energy store can be carried out with reduced effort.

This object is achieved by a method, a computer program product and a loading system according to the independent patent claims. Advantageous embodiments are specified in the dependent claims.

One aspect of the invention relates to a method for electrically charging an electrical energy store of an at least partially electrically operated motor vehicle by means of a charging system, in which a wired charging interface of the charging system is contacted with a charging socket of the motor vehicle and in which the electrical energy store is charged by means of mode 1 charging is electrically charged via the wired charging interface.

Provision is made for a wireless communication link to be established between an electronic computing device in the motor vehicle and a further electronic computing device in the charging system, and for the charging system to be supplied with energy from the further electronic computing device, taking into account charging information for the motor vehicle that is provided by the electronic computing device and transmitted via the communication link becomes.

In particular, controlled charging of the electrical energy storage device can thus be implemented via mode 1 charging in conjunction with a communication connection between the motor vehicle and the charging interface, which can also be referred to as load or energy management. In particular, this leads to cost savings, since no separate hardware is required at the charging interface. Furthermore, savings in hardware for powerline communication can be neglected. Furthermore, communication modules already installed in the motor vehicle, such as a WLAN module, can be used to communicate establish a connection. The idea according to the invention can be easily implemented in particular in already existing charging solutions. Furthermore, charging parks can, for example, compensate for charging peaks or dips for adjacent industrial or commercial operations. Furthermore, in the event of a grid failure, the charging parks can be used as an energy source for nearby industrial or commercial companies.

Mode 1 charging involves, in particular, a single-phase or three-phase alternating current of up to 16 amperes in order to charge the electrical energy store of the motor vehicle. The mode 1 charging described here corresponds in particular to the mode 1 charging mode according to IEC 61851-1 or IEC 62196 and can also be referred to as class 1 charging mode. The wired charging interface includes the phases, a neutral charger and a protective earth. A pilot contact point to enable the charging process can be omitted. In particular, the charging interface can be provided on the basis of simple Schuko plugs or CCE sockets. The charging interface can also be referred to as a charging point, in which case, as already mentioned, it provides a standardized energy interface.

In particular, it is therefore provided that the motor vehicle, in particular the electronic computing device of the motor vehicle, connects to the further electronic computing device via the communication link. In this case, for example, the motor vehicle can transmit the corresponding identifier of the charging point. The charging process is then controlled via the additional electronic computing device. In particular, the further electronic computing device thus controls the provision of energy, while complying with corresponding limits/limit values of the infrastructure and can also provide for a disconnection of the charging point via a corresponding isolating switch, for example.

According to an advantageous embodiment, a state of charge of the electrical energy store and/or a charging potential of the charging socket and/or an energy value for charging are transmitted as charging information. For example, the state of charge can also be the so-called state of charge (SoC). In particular, the state of charge describes how much residual energy is still available in the electrical energy store. Furthermore, the charging potential, ie how much energy can be transmitted via the charging socket of the motor vehicle, for example, can also be transmitted. A desired energy value, for example specified by the customer, can also be transmitted to the additional electronic computing device as charging information. On the basis of this charging information or charging information, the provision of energy can in turn be controlled by the additional electronic computing device.

Furthermore, it has proven to be advantageous that a radio-based communication link is established as the communication link. For example, the communication connection can be provided via mobile radio, WLAN or Bluetooth. This list is purely exemplary and by no means exhaustive. Further radio-based communication links or further communication links can also be implemented. In particular, interfaces already installed in the motor vehicle can be used as radio-based communication links, so that no additional hardware is required inside the motor vehicle in order to carry out the method according to the invention.

It is also advantageous if the charging system provides a large number of charging interfaces for a large number of motor vehicles for mode 1 charging, a respective charging process of the large number of motor vehicles being controlled by means of the additional electronic computing device. In particular, two at least partially electrically operated motor vehicles can thus be charged in parallel, for example. In particular, these can be operated with mode 1 charging. In particular on the basis of the restrictions of 16 amps, it can thus be decided by the further electronic computing device which of the motor vehicles receives how much energy. In particular, it can then be provided, for example, that when there are two motor vehicles, both motor vehicles are supplied with 8 amperes. For example, if three vehicles are connected to the charging system, each vehicle can be charged with 16/3 amps. In particular, corresponding specifications for mode 1 charging can thus be complied with, so that reliable and safe charging of the motor vehicles can be implemented.

In a further advantageous embodiment, a respective charging interface is recognized on the motor vehicle side and the recognition of the respective charging interface is transmitted to the further electronic computing device as charging information. For example, the recognition can take place via a QR code or barcode at the charging interface. Both the motor vehicle itself and a user's mobile terminal device can recognize this QR code or this barcode. Furthermore, the determination of the address by the motor vehicle or a mobile end device by reading a radio identifier, for example via RFID or near field communication identifier (NFD) at the charging interface. The address can also be determined by the vehicle or the mobile terminal using the geodata or position data, for example on the basis of a global positioning system (GPS—Global Positioning System) or on the basis of odometry data. The address can also be determined by the load management system or the additional electronic computing device by reading out specified current values, sequences and characteristic curves set by the motor vehicle.

In a further advantageous embodiment, the charging system is provided with a fuse disconnect switch. In particular, in an emergency, the supply of energy can be switched off via the further electronic computing device. For example, the fuse disconnect switch can be designed as a so-called Fl switch. Safe operation of the charging system can thus be implemented.

In a further advantageous embodiment, a bidirectional provision of energy from the electrical energy store is controlled by means of the further electronic computing device. In the case of bidirectional operation, the electrical energy store can both be charged and also provide electrical energy for the charging system. Thus, for example, isolated operation can be implemented, whereby in the event of a power failure, electronic devices which, if they are coupled to the charging system, can be supplied by the electrical energy of the motor vehicle or the motor vehicle. In particular, the corresponding control also takes place via the further electronic computing device.

According to a further advantageous embodiment, if the communication link is interrupted, emergency charging with a lower charging power than in mode 1 charging is controlled by the additional electronic computing device. In particular, this can thus be implemented as a substitute reaction in the event of a communication interruption. The motor vehicle can be put into an emergency charging mode, in which case a lower output and a corresponding voltage monitoring can be implemented. This means that emergency charging can continue to be implemented even if communication is interrupted.

The method presented is a computer-implemented method. A further aspect of the invention therefore relates to a computer program product with program code means which cause an electronic computing device to carry out a method according to the preceding aspect when the program code means are processed by the electronic computing device. A further aspect of the invention therefore also relates to a computer-readable storage medium with the computer program product.

Yet another aspect of the invention relates to a charging system for electrically charging an electrical energy store of an at least partially electrically operated motor vehicle, with at least one charging interface, which is designed for mode 1 charging, and with a further electronic computing device, the charging system for carrying out of a method according to the preceding aspect. In particular, the method is carried out using the charging system.

The electronic arithmetic unit or the further electronic arithmetic unit have, in particular, electronic components, processors, circuits, in particular integrated circuits, and other electronic components in order to be able to carry out corresponding method steps.

The invention also includes developments of the charging system according to the invention, which have features as have already been described in connection with the developments of the method according to the invention. For this reason, the corresponding developments of the charging system according to the invention are not described again here.

The invention also includes the combination of the features of the described embodiments.

• 1 eine schematische Ansicht einer Ausführungsform eines Ladesystems; und
• 2 eine weitere schematische Ansicht einer weiteren Ausführungsform eines Ladesystems.

Exemplary embodiments of the invention are described below. For this shows:

• 1 a schematic view of an embodiment of a charging system; and
• 2 a further schematic view of a further embodiment of a charging system.

The exemplary embodiments explained below are preferred exemplary embodiments of the invention. In the exemplary embodiments, the described components each represent individual features of the invention that are to be considered independently of one another, which also develop the invention independently of one another and are therefore also to be regarded as part of the invention individually or in a combination other than that shown. Of Furthermore, the exemplary embodiments described can also be supplemented by further features of the invention already described.

Elements with the same function are each provided with the same reference symbols in the figures.

1 shows a schematic exemplary embodiment according to an embodiment of a charging system 1. The charging system 1 is designed for electrically charging an electrical energy store 2, 3, 4 of an at least partially electrically operated motor vehicle 5, 6, 7. The present example shows in particular that a first motor vehicle 5 can have a first electrical energy store 2 . A second motor vehicle 6 can have a second electrical energy store 3 . A third motor vehicle 7 can have a third electrical energy store 4 . It is also shown that the charging system 1 can have at least one charging interface 8, 9, 10. In particular, three charging interfaces 8 , 9 , 10 are shown here, in particular a first charging interface 8 , a second charging interface 9 and a third charging interface 10 . The first motor vehicle 5 is presently coupled to the first charging interface 8 . The second motor vehicle 6 is coupled to the second charging interface 9 . The third motor vehicle 7 is coupled to the third cable interface 10 . The first motor vehicle 5 has a first electronic computing device 11 . The second motor vehicle 6 has a second electronic computing device 12 and the third motor vehicle 7 has a third electronic computing device 13 . In particular, the charging system 1 also has a further electronic computing device 14 . It is provided that a communication connection 15 can be set up between the electronic computing devices 11 , 12 , 13 and the further electronic computing device 14 . For this purpose, the charging system 1 can have an access point 16, for example. The access point 16 can in turn implement a further communication link 17 with the further electronic computing device 14 . The further communication link 17 can be both wired and radio-based. The communication link 15 is preferably radio-based.

In particular, the 1 a method for electrically charging an electrical energy store 2, 3, 4 of an at least partially electrically operated motor vehicle 5, 6, 7 by means of the charging system 1. The wired charging interface 8, 9, 10 of the charging system 1 is connected to a respective charging socket of the motor vehicle 5, 6, 7 are contacted, and the electrical energy store 2, 3, 4 is charged via the wired charging interface 8, 9, 10 by means of mode 1 charging.

Provision is made for a wireless communication connection 15 to be established between a respective electronic computing device 11, 12, 13 of the motor vehicle 5, 6, 7 and the additional electronic computing device 14, and for the charging system 1 to be provided with energy by the additional electronic computing device 14, taking into account one of the electronic computing device 11, 12, 13 provided and transmitted via the communication link 15 charging information 18 of the motor vehicle 5, 6, 8 is controlled.

In particular, a state of charge of the electrical energy store 2, 3, 4 and/or a charging potential of the charging socket and/or an energy value for charging can be transmitted as the charging information 18 .

As the 1 shown, the charging system 1 can in particular have a large number of charging interfaces 8, 9, 10, the three charging interfaces 8, 9, 10 shown being to be understood purely as examples. The charging interfaces 8, 9, 10 are then provided for a large number of motor vehicles 5, 6, 7 for an s, with the additional electronic computing device 14 controlling a respective charging process for the large number of motor vehicles 5, 6, 7. Provision can be made here in particular for a respective charging interface 8 , 9 , 10 to be identified on the motor vehicle side and for the respective charging interface 8 , 9 , 10 to be identified as charging information 18 to be transmitted to the further electronic computing device 14 .

The further electronic computing device 14 or the charging system 1 is in particular coupled to an electrical supply network 19 so that electrical energy can be transmitted from the electrical supply network 19 to the motor vehicles 5, 6, 7. If, for example, there is a power failure, it can also be provided that the charging system 1 is contacted with other electrical components for, for example, standalone operation 20, so that electrical energy for standalone operation 20 is provided from electrical energy stores 2, 3, 4. Bidirectional charging or discharging of the electrical energy stores 2, 3, 4 via the charging system 1 can thus be implemented.

Provision can also be made for emergency charging with a lower charging power than in mode 1 charging to be controlled by the additional electronic computing device 14 if the communication link 18 is interrupted.

The 1 FIG. 1 further shows that the charging system 1 can have a fuse disconnect switch 21 . In the present case, all three motor vehicles 5 , 6 , 7 or all three charging interfaces 8 , 9 , 10 are connected via a single safety circuit breaker 21 .

In particular, the 1 That the charging interface 8, 9, 10 can be provided, for example, as a standardized energy interface via a Schuko socket or a CCE socket. The motor vehicles 5, 6, 7 connect via the communication link 15 to the further electronic computing device 14. The motor vehicles 5, 6, 7 transmit the recognition of the charging interfaces 8, 9, 10 to the further electronic computing device 14. The control of the charging process can, for example based on a protocol via radio network, whereby the exchange of limit values, target specifications and actual values can be implemented.

The further electronic computing device 14 controls the provision of energy, monitors the specification of the limit values of the infrastructure and can, if necessary, also switch off the charging interfaces 8, 9, 10, for example via the fuse disconnect switch 21. In the event of an emergency, the charging interfaces 8, 9, 10 are switched off via the circuit breaker or fuse circuit breaker 21.

Motor vehicles 5, 6, 7 communicate, for example, via radio network with further electronic computing device 14. Substitute reactions in the event of a communication interruption, for example emergency charging of motor vehicles 5, 6, 7 with less power and voltage monitoring can be implemented. In the event of a power failure at the charging interfaces 8, 9, 10, the charging process can be switched off immediately. Furthermore, bidirectional charging or discharging of the motor vehicles 5, 6, 7 at the charging interfaces 8, 9, 10 can be made possible, for example, in parallel operation. As soon as the electrical energy supply network 19 fails during bidirectional charging or discharging, the charging process can be switched off. Furthermore, a constant monitoring of the AC network can be monitored, for example via built-in circuit breakers in the motor vehicle 5, 6, 7. In particular, charging takes place via so-called mode 1 charging, in which case a corresponding charging cable is provided, which forms the line or contact between the motor vehicles 5, 6, 7 and the charging interfaces 8, 9, 10. A maximum possible current load of the cable from the motor vehicle 5, 6, 7 can be read out via a resistance coding. Optional power disconnects and power sources can also be provided for this operation. In particular, the motor vehicles 5, 6, 7 can be used as an energy source should the electrical supply network 19 fail. This is illustrated in particular by island operation 20 .

2 12 shows a further schematic embodiment according to an exemplary embodiment of the charging system 1. The present example shows in particular that the charging interfaces 8, 9, 10 can be coupled via separate fuse disconnectors 21a, 21b and 21c. In the present case, the first charging interface 8 is coupled in particular via a first fuse disconnector 21a. The second charging interface 9 is coupled via a second safety disconnect switch 21b. The third charging interface 10 is coupled via a third fuse disconnector 21c.

Furthermore, a mixture of the in 1 presented embodiment and in 2 illustrated embodiment can be realized. Furthermore, different connections between the vehicle and the further electronic computing device 14 can also be implemented. For example, this can be done via WLAN with the access point 16 or via a mobile network and a combination thereof.

In particular in the case of bidirectional charging or discharging, the network can be constantly monitored by the motor vehicle 5, 6, 7, for example by means of built-in protective mechanisms. In the event of a power failure at the charging interfaces 8, 9, 10, the corresponding bidirectional charging process can be switched off immediately by the motor vehicle 5, 6, 7. In the event of an emergency, the corresponding charging process can be interrupted, for example, via the corresponding safety disconnect switches 21a, 21b, 21c.

Furthermore, as already described, isolated operation 20 can also be implemented. For this purpose, the network management can be carried out by the energy source for isolated operation 20, with the motor vehicles 5, 6, 7 being able to be regarded as an additional energy source for parallel operation to provide electrical energy.

Reference List

1

charging system

2

first electrical energy storage device

3

second electrical energy storage device

4

third electrical energy storage

5

first motor vehicle

6

second motor vehicle

7

third motor vehicle

8th

first charging interface

9

second charging interface

10

third charging interface

11

first electronic computing device

12

second electronic computing device

13

third electronic computing device

14

further electronic computing device

15

communication link

16

access point

17

further communication link

18

loading information

19

electrical supply network

20

island operation

21

fuse disconnect switch

21a

first circuit breaker

21b

second fuse disconnect switch

21c

third circuit breaker

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was 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.

Patent Literature Cited

• DE 102013000981 A1 [0003]
• US 20130043306 A1 [0004]
• US20140266047A1 [0005]

Claims (10)

Method for electrically charging an electrical energy store (2, 3, 4) of an at least partially electrically operated motor vehicle (5, 6, 7) by means of a charging system (1), in which a wired charging interface (8, 9, 10) of the charging system (1 ) is contacted with a charging socket of the motor vehicle (5, 6, 7) and in which the electrical energy store (2, 3, 4) is electrically charged via the wired charging interface (8, 9, 10) by means of mode 1 charging, characterized in that a wireless communication connection (15) is established between an electronic computing device (11, 12, 13) of the motor vehicle (5, 6, 7) and a further electronic computing device (14) of the charging system (1) and energy is provided by the charging system (1) by the further electronic computing device (14), taking into account a data provided by the electronic computing device (11, 12, 13) and transmitted via the communication link (1st 5) transmitted loading information (18) of the motor vehicle (5, 6, 7) is controlled. procedure after claim 1 , characterized in that a state of charge of the electrical energy store (2, 3, 4) and/or a charging potential of the charging socket and/or an energy value for charging are transmitted as charging information (18). procedure after claim 1 or 2 , characterized in that a radio-based communication link (15) is established as the communication link (15). Method according to one of the preceding claims, characterized in that the charging system (1) provides a large number of charging interfaces (8, 9, 10) for a large number of motor vehicles (5, 6, 7) for mode 1 charging, a respective charging process of the plurality of motor vehicles (5, 6, 7) being controlled by means of the additional electronic computing device (14). procedure after claim 4 , characterized in that a respective charging interface (8, 9, 10) is recognized on the motor vehicle side and the recognition of the respective charging interface (8, 9, 10) is transmitted to the further electronic computing device (14) as charging information (18). Method according to one of the preceding claims, characterized in that the charging system (1) is provided with a fuse disconnector (21, 21a, 21b, 21c). Method according to one of the preceding claims, characterized in that the further electronic computing device (14) is used to control a bidirectional supply of energy from the electrical energy store (2, 3, 4). Method according to one of the preceding claims, characterized in that when the communication link (14) is interrupted, emergency charging with a lower charging capacity than in mode 1 charging is controlled by means of the further electronic computing device (14). Computer program product with program code means which cause an electronic computing device (14) to do so when the program code means are processed by the electronic computing device (14), a method according to one of Claims 1 until 8th to perform. Charging system (1) for electrically charging an electrical energy store (2, 3, 4) of an at least partially electrically operated motor vehicle (5, 6, 7), with at least one charging interface (8, 9, 10) which is used for a mode 1 Charging is formed, and with a further electronic computing device (14), wherein the charging system (1) for performing a method according to one of Claims 1 until 8th is trained.

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