DE102018131313A1 - Charging system for charging an energy storage device of an electric vehicle and method for operating a charging system - Google Patents

Abstract

The charging system for charging an energy store of an electric vehicle (10), the charging system comprising at least one electrical energy source (1) and at least one charging station (3, 3a, 3b, ..., 3n) designed for charging the energy store. and control unit and the electrical energy source (1) is electrically connected to the charging station (3, 3a, 3b, ..., 3n), characterized in that the charging system comprises an energy meter (2) which is used to measure the electrical energy Energy source (1) for the charging station (3, 3a, 3b, ..., 3n) is formed, the energy meter (2) from the electronics and control unit of the charging station (3, 3a, 3b, ..., 3n) is decoupled and can be operated independently of the charging station (3, 3a, 3b, ..., 3n).

Description

The invention relates to a charging system for charging an energy storage device of an electric vehicle, wherein the charging system comprises at least one electrical energy source and at least one charging station designed for charging the energy storage device with an electronic and control unit, and the electrical energy source is electrically connected to the charging station. Furthermore, the invention relates to a method for operating a charging system for charging an energy storage device of an electric vehicle, the charging system comprising at least one electrical energy source and at least one charging station designed for charging the energy storage device with an electronics and control unit, the electrical energy source with the charging station being electrical connected is.

A charging system with a charging station, which is designed for charging an energy store of an electric vehicle, is known from the prior art. The known charging station has an electronics and control unit and an energy meter arranged in the charging station, so that the current consumed when charging the energy store can be measured. This requires complex power electronics, including the electronics and control unit and the energy meter, which are connected to one another electrically and in terms of data technology.

It is therefore the object of the invention to provide a charging system which has a simple constructional and inexpensive construction.

The object is achieved by patent claim 1, in particular by the characterizing part of patent claim 1. It is provided that the charging system comprises an energy meter, which is designed to measure the electrical energy supplied by the electrical energy source to the charging station, the energy meter being used by the Electronics and control unit of the charging station is decoupled and can be operated independently of the charging station. This measure makes it possible to simplify the design of the charging station and thus the entire charging system. As a result, the manufacturing costs, in particular for the charging station, are significantly reduced because complex power electronics for processing consumption data relating to the charging process when charging the energy store of the electric vehicle can be dispensed with. The energy meter can be regarded as an autonomous technical unit because it is independent of the design of the charging station operator. The energy meter should only be arranged in such a way that it reliably measures the energy delivered by the energy source, in particular the current, before the energy supplied is further processed as part of the charging process of the energy storage device of the electric vehicle. If the energy meter needs to be replaced, it can also be easily replaced in the charging system because the energy meter is self-sufficient and independent of the charging station. The energy source can be, for example, a power plant that is operated by an energy supplier. The energy can be provided via a general supply network, which can be at least partially part of the charging system. In the simplest case, the charging station can only have a socket with the associated electronics.

The charging station is decoupled from the energy meter, so that there is no need for a communication interface between the charging station and the energy meter, as a result of which the costs of the charging system can be further reduced. There is preferably no data exchange between the charging station and the energy meter. In its simplest form, the energy meter can only measure the energy supplied by the energy source to the charging station and preferably display it using a display. For this purpose, it can be provided that the housing has a viewing window and / or a closable flap. By means of the viewing window, in particular a charging station operator can read the energy consumption on the respective charging station or for a group of charging stations. If the energy meter is arranged in the housing and can be closed by the flap, it is protected against environmental influences and vandalism.

Furthermore, according to a further preferred embodiment of the charging system, it can be provided that the charging station has a communication module, in particular an NFC module, which is designed to register the electric vehicle for a charging process of the energy store and / or to activate the charging station. The NFC module can either be designed as an NFC reader or as a passive NFC chip. To register the electric vehicle at the corresponding charging station, the registration data of the user and / or of the electric vehicle can be used to activate the charging station for the user. In order to activate the charging station, a data comparison should be carried out between the user's login data and, for example, access data stored in the charging station. The data comparison can take place in encrypted form in order to make communication more secure.

According to a further preferred embodiment of the charging system, that the housing of the energy meter is arranged at a distance, in particular decentrally, from the at least one charging station, the energy meter being connected to at least one supply line which connects the electrical energy source and the at least one charging station. This measure makes it possible to make the charging station even more compact. Furthermore, the energy meter can be arranged in a safe place in order to protect the energy meter from vandalism and manipulation, for example. However, it is also conceivable that the housing for arranging the energy meter is arranged in or on the charging station, but is arranged decoupled from the electronics and control unit of the charging station.

The charging system can be operated very inexpensively and simply if the charging system has a large number of charging stations, which are collectively assigned a single energy meter. For example, a single energy meter can be assigned to a parking lot with several charging stations. Thus, preferably all charging stations can have the same structural design, whereby the costs for providing the charging system can also be reduced. For example, an energy supply cable can be laid from the energy source in a building with a distributor and connected to the energy meter there. The energy meter can be connected to a distributor and the distributor in turn with the individual charging station cables of the respective charging stations.

Furthermore, the object of the invention is achieved by a method according to patent claim 7, in particular by the characterizing part of patent claim 7. It is provided that the charging system comprises an energy meter, which measures the electrical energy supplied by the electrical energy source to the charging station, the energy meter being decoupled from the electronics and control unit of the charging station, preferably in terms of data technology, and being operated independently of the charging station.

According to a further preferred embodiment of the method, it can be provided that the energy meter has a mechanical and / or digital consumption display, an energy consumption recorded by the consumption display, in particular consumption data, being read out and / or read by a service technician at predetermined time intervals, whereby Energy suppliers are billed for the at least one charging station based on the consumption data. The service technician can read the consumption data manually by visual contact and / or alternatively by a reading device that the service technician carries with him. In the simplest case, the billing data can be the electricity consumed by the charging stations in kWh.

Alternatively or additionally, provision can be made for consumption data relating to the energy consumption to be sent automatically from the energy meter to a first data processing system of an energy supplier by means of a transmitting and / or receiving device, the billing data for the at least one being used by the energy supplier on the basis of the consumption data Charging station can be created. This measure enables the consumption data to be called up at any time.

According to a further preferred embodiment of the method, it can be provided that the charging station comprises a communication module, in particular an NFC module, and the charging station is released for use by means of a mobile communication device of a user of the electric vehicle as part of a registration, the mobile communication device providing a communication interface, in particular has an NFC interface, via which registration data is transmitted from the mobile communication device to the communication module of the respective charging station during registration. The registration data can include, for example, the name of the user, electric vehicle data, and a unique ID number which is assigned to the electric vehicle and / or the user. The mobile communication device can be designed, for example, as a smartphone or smartwatch or tablet computer.

According to a further preferred embodiment of the method, it can be provided that usage data is transmitted from the charging station to the mobile communication device and / or to a data storage device arranged in the electric vehicle. The usage data can include, for example, the name of the user, electric vehicle data, the unique ID number that is assigned to the electric vehicle and or the user, a time stamp about the duration of the charging process at the charging station, GPS location data of the charging station.

According to a further preferred embodiment of the method, it can be provided that the registration data and / or usage data are transmitted from the charging station and / or from the mobile communication device and / or from the electric vehicle to a second data processing system of a charging station operator, the second data processing system using the Registration data and / or usage data, billing data of the charging station operator for one or more charging processes, which are generated by the second data processing system of the Charging station operator to the user's mobile communication device and / or be transferred to the electric vehicle. The usage data can also include data about the state of charge of the battery before charging and the state of charge after charging the electric vehicle. The usage data can be used when calculating the charge to be paid for the charging process. Furthermore, the usage data can include a time stamp about the duration of the charging process at the charging station. The usage data are preferably sent either by the user's mobile communication device and / or by the electric vehicle to the second data processing system of the charging station operator. In this case, the charging station only serves to authenticate the user as to whether he is authorized to carry out a charging process at this charging station. According to this embodiment, the charging station can have a very simple construction, which preferably comprises a charging socket for a charging cable for charging the energy store of the electric vehicle, a communication module for authenticating the user, a control unit and an electronic unit for providing the energy. According to a further preferred embodiment of the method, it can be provided that the billing data of the charging station operator are created on the basis of time-based data regarding the use of the at least one charging station by the charging station operator for the user, and the billing data of the energy supplier are created on the basis of the actual energy consumption measured by the energy meter . The billing data for the user can be calculated, for example, independently of the measured consumption on the energy meter, for example by including the state of charge of the energy store before the charging process and after the charging process in the calculation of the billing data. The charging station operator can thus use the usage data, which are recorded by the mobile communication device and / or the electric vehicle and / or the charging station, to calculate the billing data.

According to a further preferred embodiment of the method, it can be provided that the energy meter is decoupled from the electronics and control unit of the charging station in terms of data technology. This means that information and data exchange can be excluded between the at least one charging station and the energy meter. Even in the event of a total technical failure of the charging station, the functionality of the energy meter is retained because it forms an autonomous technical unit with the charging station.

The invention and the technical environment are explained in more detail below with reference to the figures. It should be pointed out that the figures show particularly preferred embodiment variants of the invention, but the invention is not restricted to this. It is also pointed out that the reference numerals “n” represent a whole natural number, which can theoretically be infinitely large.

• 1 ein Ladesystem gemäß einer ersten Ausführungsform, und
• 2 ein Ladesystem gemäß einer zweiten Ausführungsform.

The figures show:

• 1 a charging system according to a first embodiment, and
• 2nd a charging system according to a second embodiment.

In the 1 is a charging system for charging an energy storage device of an electric vehicle 10th According to a first embodiment shown, which has at least one electrical energy source designed as a current source 1 , an energy meter 2nd , a charging station designed to charge the energy store 3rd with an electronics and control unit. Here is the electrical energy source 1 with a first supply line 4th with the energy meter 2nd electrically connected. The energy meter 2nd is again with a second supply line 5 with the charging station 3rd electrically connected. The energy meter 2nd is for measuring the from the electrical energy source 1 to the charging station 3rd delivered electrical energy, in particular electricity, the energy meter 2nd from the electronics and control unit of the charging station 3rd is decoupled and independent of the charging station 3rd is operable. The charging station 3rd has a communication module 6 , in particular an NFC module, which is used to register the electric vehicle 10th for a charging process of the energy storage and for the activation of the charging station 3rd is trained.

The energy meter 2nd is arranged in a housing, not shown, wherein the housing has a viewing window and / or a closable flap around the energy meter 2nd to protect against vandalism and environmental influences. The housing of the energy meter 2nd can be spaced, in particular decentrally, from the at least one charging station 3rd be arranged, the energy meter 2nd with the supply lines 4th , 5 which is the energy source 1 and the at least one charging station 3rd connect with each other. It is also conceivable that the housing for the arrangement of the energy meter 2nd in or at the charging station 3rd is arranged. It is also conceivable that the energy meter can be arranged in a house, in particular in a residential building, preferably in the basement. The charging station 3rd is via a charging cable 7 with the electric vehicle 10th connectable. For example, the charging cable 7 by a user or robot into a charging socket 8th the charging station 3rd and into an electric vehicle charging socket 9 stuck. The communication module 6 , in particular the NFC module, can be used with a mobile communication device 11 with a communication interface 12 communicate, the charging station 3rd by means of the mobile communication device 11 of the user of the electric vehicle 10th released for use as part of a registration. When registering or authenticating, registration data can be obtained from the mobile communication device 11 to the communication module 6 the charging stations 3rd be transmitted. The mobile communication device 11 can be designed, for example, as a smartphone or smartwatch or tablet computer.

In the 2nd is a charging system for charging an energy storage device of an electric vehicle 10th shown according to a second embodiment, in which the charging system comprises a plurality of charging stations 3a , 3b , ..., 3n has a single energy meter 2nd assigned. The charging stations 3a , 3b , ..., 3n each include a charging socket 8a , 8b , ..., 8n and one communication module each 6a , 6b , ..., 6n . The energy meter 2nd is also here with an electrical energy source 1 via a first supply line 4th electrically connected. In contrast to the first embodiment of the charging system, here is the energy meter 2nd via a supply line 5 with a distributor 14 electrically connected. The distributor 14 serves to accommodate and connect the supply lines 13a , 13b , ..., 13n with the corresponding charging stations 3a , 3b , ..., 3n . The charging stations 3a , 3b , ..., 3n are preferably of identical construction in order to obtain a homogeneous charging system.

The housing of the energy meter 2nd can be spaced, especially decentrally from the charging station 3a , 3b , ..., 3n be arranged. In the present case according to the 2nd is the charging station 3b via a charging cable 7 with the electric vehicle 10th connected. For this, the charging cable 7 from a user or robot into the charging socket 8b the charging station 3b and into an electric vehicle charging socket 9 stuck. The communication module 6b , in particular an NFC module, can be used with the mobile communication device, for example, a smartphone 11 with a communication interface 12 communicate.

The method for operating the charging system is described below, which for both exemplary embodiments according to FIG 1 and 2nd is applicable.

In order to operate the charging system, at least the electrical energy source 1 , at least one charging station 3rd respectively. 3a , 3b , ..., 3n and at least one energy meter 2nd needed, which are electrically connected together in a network. The energy meter 2nd measures that from the electrical energy source 1 to the charging station 3rd respectively. 3a , 3b , ..., 3n delivered electrical energy, being the energy meter 2nd from the electronics and control unit of the charging station 3rd respectively. 3a , 3b , ..., 3n , in particular is decoupled in terms of data technology and is operated independently of the charging station. The energy meter 2nd adds up to the charging station (s) 3rd respectively. 3a , 3b , ..., 3n delivered electrical energy, in particular the amount of energy, in particular the electricity. The energy meter 2nd is from the electronics and control unit of the charging station 3rd respectively. 3a , 3b , ..., 3n decoupled in terms of data. This means that between the at least one charging station 3rd respectively. 3a , 3b , ..., 3n and the energy meter 2nd an exchange of information and data is not carried out. Even in the event of a total technical failure of the charging station 3rd respectively. 3a , 3b , ..., 3n the functioning of the energy meter remains 2nd received because of this to the charging station 3rd respectively. 3a , 3b , ..., 3n forms a self-sufficient technical unit.

The charging station operator can use the charging system according to the invention directly with the energy supplier independently of a customer, in particular user of the electric vehicle 10th of the charging station operator from the electrical energy source to the charging station 3rd or charging stations 3a , 3b , ..., 3n Bill the energy delivered because the energy supplied by the energy meter 2nd is clearly recorded.

The energy meter 2nd Therefore, preferably has a mechanical and / or digital consumption display, wherein an energy consumption detected by the consumption display, in particular consumption data at predetermined time intervals, can be read out and / or read by a service technician, with billing data for the at least one charging station being used by the energy supplier based on the consumption data 3rd respectively. 3a , 3b , ..., 3n can be created. It is also conceivable for consumption data relating to energy consumption to be automated by the energy meter at predetermined time intervals 2nd by means of a transmission and / or reception device of the energy meter, not shown in detail, to a first data processing system DV1 of the energy supplier are sent, the energy supplier billing data for the at least one charging station based on the consumption data 3rd respectively. 3a , 3b , ..., 3n to be created. The transmission of the consumption data to the first data processing system DV1 can, for example, be radio-based, in particular by W-LAN or cable-based, in particular by LAN.

The charging station operator, in turn, calculates directly with the customer of the charging station 3rd respectively. 3a , 3b , ..., 3n from. The billing model can be carried out independently of the billing data for the energy supplier. So that the charging station operator can bill the customer for the costs of one or more charging processes directly, a second data processing system assigned to the charging station operator must be used DV2 collect specific data from the customer. The specific data can be registration data and / or usage data. The registration data and / or usage data can be obtained from the mobile communication device 11 of the user and / or the corresponding charging station 3rd respectively. 3a , 3b , ..., 3n and / or directly from the electric vehicle via LAN or WiFi to the second data processing system DV2 be sent. The registration data can, for example, the GPS location data of the charging station recorded by the electric vehicle 3rd respectively. 3a , 3b , ..., 3n , the state of charge of the battery before charging, the name of the user, the electric vehicle data, the unique ID number which is assigned to the electric vehicle and or to the user. The usage data can include, for example, data about the state of charge of the energy storage device of the electric vehicle 10th before charging and the state of charge after charging the electric vehicle.

To the registration data of the electric vehicle 10th and / or the mobile communication device 11 to the corresponding charging station 3rd respectively. 3a , 3b , ..., 3n to transfer, the charging station 3rd respectively. 3a , 3b , ..., 3n a communication module 6 , 6a , 6b , ..., 6n on, in particular an NFC module, the charging station 3rd respectively. 3a , 3b , ..., 3n by means of the mobile communication device 11 of the user of the electric vehicle 10th can be released for use within the scope of the registration, in particular for starting the charging process. The mobile communication device can do this 11 a communication interface 12 , in particular have an NFC interface, via which the login data from the mobile communication device 11 to the communication module 6 , 6a , 6b , ..., 6n the charging station 3rd respectively. 3a , 3b , ..., 3n be transferred upon registration. The usage data in turn can be from the charging station 3rd respectively. 3a , 3b , ..., 3n to the mobile communication device 11 and / or to one in the electric vehicle 10th arranged data storage are transmitted. Basically, the registration data and / or usage data from the charging station 3rd respectively. 3a , 3b , ..., 3n and / or from the mobile communication device 11 and / or from the electric vehicle 10th to a second data processing system DV2 transmitted by a charging station operator, with the second data processing system DV2 by means of the registration data and / or usage data, billing data of the charging station operator for one or more charging processes, which are generated by the second data processing system DV2 of the charging station operator to the mobile communication device 11 of the user and / or to the electric vehicle 10th be transmitted.

As a result, the charging data of the charging station operator can be based on time-based data regarding the use of the at least one charging station 3rd respectively. 3a , 3b , ..., 3n by the charging station operator for the user and the billing data of the energy supplier based on the energy meter 2nd measured actual energy consumption by the energy supplier for the charging station operator.

Further designs of the solution according to the invention, in particular the charging system and the method, are possible. It is therefore conceivable that usage data from the charging station to one in the electric vehicle 10th arranged data storage can be transferred. Furthermore, the communication module 6 , 6a , 6b , ..., 6n also include a QR code. Furthermore, the energy storage device of the electric vehicle could 10th additionally or alternatively can be charged wirelessly, preferably inductively. In the simplest case, the at least one charging station 3rd respectively. 3a , 3b , ..., 3n only one charging point, especially one charging socket 8th , 8a , 8b , ..., 8n exhibit.

Reference symbol list

1

electrical energy source

2nd

Energy meter

3, 3a, 3b, ..., 3n

Charging station

4th

first supply line

5

second supply line

6, 6a, 6b, ..., 6n

Communication module

7

Charging cable

8, 8a, 8b, ..., 8n

Charging socket

9

Electric vehicle charging socket

10th

Electric vehicle

11

mobile communication device

12

Communication interface

13 13a, 13b, ..., 13n

Supply lines

14

Distributor

Claims (14)

Charging system for charging an energy store of an electric vehicle (10), the Charging system comprises at least one electrical energy source (1) and at least one charging station (3, 3a, 3b, ..., 3n) designed for charging the energy store with an electronics and control unit and the electrical energy source (1) with the charging station (3, 3a, 3b, ..., 3n) is electrically connected, characterized in that the charging system comprises an energy meter (2) which is used to measure the energy source (1) to the charging station (3, 3a, 3b, ... , 3n) is provided, the energy meter (2) being decoupled from the electronics and control unit of the charging station (3, 3a, 3b, ..., 3n) and independent of the charging station (3, 3a, 3b, ..., 3n) is operable. Charging system after Claim 1 , characterized in that the energy meter (2) is arranged in a housing, the housing having a viewing window and / or a closable flap. Charging system after Claim 1 or 2nd , characterized in that the charging station (3, 3a, 3b, ..., 3n) has a communication module (6, 6a, 6b, ..., 6n), in particular an NFC module, which is used to register the electric vehicle (10 ) is designed for a charging process of the energy store and for activating the charging station (3, 3a, 3b, ..., 3n). Charging system according to at least one of the Claims 1 to 3rd characterized in that the housing of the energy meter (2) is spaced apart, in particular decentrally, from the at least one charging station (3, 3a, 3b, ... 3n), the energy meter (2) being connected to at least one supply line (4, 5 , 13a, 13b, ..., 13n), which connects the electrical energy source (1) and the at least one charging station (3, 3a, 3b, ..., 3n). Charging system according to at least one of the Claims 1 to 4th , characterized in that the housing for arranging the energy meter (2) is arranged in or on the charging station (3, 3a, 3b, ... 3n). Charging system according to at least one of the Claims 1 to 5 , characterized in that the charging system has a plurality of charging stations (3, 3a, 3b, ... 3n), to which a single energy meter (2) is assigned. Method for operating a charging system for charging an energy store of an electric vehicle (10), wherein the charging system has at least one electrical energy source (1) and at least one charging station (3, 3a, 3b, ..., 3n) designed for charging the energy store - And control unit, the electrical energy source (1) being electrically connected to the charging station (3, 3a, 3b, ..., 3n), characterized in that the charging system comprises an energy meter (2) which detects the electrical energy Energy source (1) for the charging station (3, 3a, 3b, ..., 3n) measures electrical energy, the energy meter (2) from the electronics and control unit of the charging station (3, 3a, 3b, ... 3n) is decoupled and operated independently of the charging station (3, 3a, 3b, ..., 3n). Procedure according to Claim 7 , characterized in that the energy meter (2) has a mechanical and / or digital consumption display, wherein an energy consumption recorded by the consumption display, in particular consumption data at predetermined time intervals, is read out and / or read by a service technician, with an energy supplier using the consumption data Billing data for the at least one charging station (3, 3a, 3b, ..., 3n) are created. Procedure according to Claim 7 or 8th , characterized in that consumption data relating to the energy consumption is sent automatically from the energy meter (2) by means of a transmitting and / or receiving device of the energy meter (2) to a first data processing system (DV1) of the energy supplier at predetermined time intervals, the energy supplier using the Consumption data Billing data for the at least one charging station (3, 3a, 3b, ..., 3n) are created. Procedure according to at least one of the Claims 7 to 9 , characterized in that the charging station (3, 3a, 3b, ..., 3n) comprises a communication module (6, 6a, 6b, ..., 6n), in particular an NFC module, and the charging station (3, 3a, 3b, ..., 3n) by means of a mobile communication device (11) of a user of the electric vehicle (10) is released for use within the scope of a registration, the mobile communication device (11) having a communication interface, in particular an NFC interface, via which Registration data is transmitted from the mobile communication device (11) to the communication module (6, 6a, 6b, ..., 6n) of the respective charging station (3, 3a, 3b, ..., 3n) when registering. Procedure according to at least one of the Claims 7 to 10th , characterized in that usage data is transmitted from the charging station (3, 3a, 3b, ..., 3n) to the mobile communication device (11) and / or to a data storage device arranged in the electric vehicle (10). Procedure according to at least one of the Claims 7 to 11 , characterized in that the registration data and / or usage data from the charging station (3, 3a, 3b, ..., 3n) and / or from the mobile communication device (11) and / or from the electric vehicle (10) to a second data processing system (DV2) of a charging station operator are transmitted, the second data processing system (DV2) using the registration data and / or usage data to generate billing data of the charging station operator for one or more charging processes, which are sent from the second data processing system (DV2) of the charging station operator to the mobile communication device (11) of the user and / or transmitted to the electric vehicle (10). Procedure according to at least one of the Claims 7 to 12 , characterized in that the billing data of the charging station operator are created on the basis of time-based data regarding the use of the at least one charging station (3, 3a, 3b, ..., 3n) by the charging station operator for the user and the billing data of the energy supplier is based on the data provided by the Energy meter (2) measured actual energy consumption can be created. Procedure according to at least one of the Claims 7 to 13 , characterized in that the energy meter (2) is decoupled from the electronics and control unit of the charging station.

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