Charging method, charging station, charging device and electric vehicle using energy energy generated by regeneratable means

Abstract

The invention relates to a method for charging an electric vehicle in which an electric vehicle connected to a charging station is charged using electrical energy provided by the charging station, the electric vehicle cooperating with the charging station during charging, a charging station for an electric vehicle, a charging device for an electric vehicle, and an electric vehicle.

Description

TECHNICAL FIELD

[0001] The present invention relates to a method for charging an electric vehicle, wherein an electric vehicle connected to a charging station is charged using electrical energy provided by the charging station, during the charging the charging device of the electric vehicle is coordinated with the charging station. The invention further relates to a charging device for an electric vehicle, an electric vehicle and a charging station for an electric vehicle. BACKGROUND

[0002] Methods of the above-mentioned type exist in the prior art in different design variants and serve to charge a traction battery of an electric vehicle using electrical energy. For the charging, the electric vehicle is connected to a charging station. The charging device of the electric vehicle is coordinated with the charging station in order to control the charging of the electric vehicle, i.e. to start the charging, to adjust the charging during the charging and / or to stop the charging.

[0003] The electrical energy provided by the charging station usually comprises a renewable share, i.e. electrical energy generated in a renewable manner, and a fossil share, i.e. electrical energy generated by means of a fossil energy carrier. Electrical energy generated in a renewable manner is inevitably influenced by weather conditions and time-of-day fluctuations. Therefore, the renewable share of the electrical energy provided by the charging station fluctuates with the weather and the time of day.

[0004] However, for ecological reasons, it is desirable to use as high a proportion of electrical energy generated in a renewable manner or as low a proportion of electrical energy generated by means of fossil fuels as possible for charging the electric vehicle.

[0005] DE 10 2023 117 767 A1 therefore discloses a method for charging an electric vehicle, in which method deviations between the electrical energy required for the charging and the electrical energy generated in a renewable manner provided by the charging station are compensated. The user can configure this compensation operation using a graphical user interface.

[0006] CN 108327569 A discloses another method for charging an electric vehicle, in which method the electric vehicle is charged during a journey on a charging lane of a road provided with charging elements using electrical energy generated in a renewable manner provided by local wind power installations and / or electrical energy provided by the power grid depending on the supply influenced by the weather and the demand influenced by the traffic.

[0007] From CN 109986987 A, a method for charging an electric vehicle is known, in which method a charging column connected to the power grid and having a solar module charges an electric vehicle connected to the charging column using electrical energy provided by the solar module, preferably, and electrical energy provided by the power grid, complementarily.

[0008] The known charging methods, although allowing for a preferred use of electric energy generated in a renewable manner, require complex configurations and / or do not achieve an optimal renewable share of the charging electric energy due to insufficient flexibility. SUMMARY

[0009] It is an object of the present application to propose a method for charging an electric vehicle which optimizes the renewable share of the charging electric energy and is easy to initiate. It is a further object of the present application to provide a charging device for an electric vehicle, an electric vehicle and a charging station for an electric vehicle.

[0010] The subject matter of the present application is a method for charging an electric vehicle in which an electric vehicle connected to a charging station is charged using electric energy provided by the charging station, the charging device of the electric vehicle and the charging station cooperate during charging. The charging station can be designed as a so-called wall-mounted charging box. The electric energy provided by the charging station can comprise a fossil share and a renewable share. The cooperation comprises the interactive sending of signals about the respective operating states and operations.

[0011] According to the present application, the electric vehicle and the charging station cooperate during charging in order to optimize the renewable share of the charging electric energy in a special charging operating mode which is activated by a simple actuation of a special charging button. The special charging button enables a simple initiation of the charging process. The special charging operating mode can be activated at any time by the special charging button at the beginning of charging or during charging without a configuration.

[0012] The renewable share is optimized in particular for itself, i.e. not only in relation to the fossil share. In other words, the optimization is not limited to maximizing the share of renewable energy in relation to the share of fossil energy.

[0013] The electric vehicle and the charging station can cooperate via a direct communication connection between the electric vehicle and the charging station. Alternatively, the electric vehicle and the charging station can cooperate via a cloud connection of the electric vehicle and / or a cloud connection of the charging station. The electric vehicle can in particular be connected to a vehicle cloud and the charging station can in particular be connected to a charging station cloud which is different from the vehicle cloud.

[0014] In an embodiment, the special charging button is provided by an infotainment system of the electric vehicle or an application of a mobile terminal device. The infotainment system can be used by an occupant of the electric vehicle, i.e. a user located inside the electric vehicle, to activate the special charging operating mode. The mobile terminal device can be used by a user located outside the electric vehicle, i.e. remotely, like a remote control, to activate the special charging operating mode. The application can be provided by the vehicle manufacturer and is a proprietary software associated with the electric vehicle for controlling functions of the electric vehicle.

[0015] Preferably, the user interface of the infotainment system or the user interface of the application provides a dedicated charging button on the topmost layer of the user interface. In this way, the dedicated charging button can be found particularly quickly. The charging button can be arranged on the initial page of the user interface.

[0016] Ideally, the surplus share of the renewable share is maximally utilized. The surplus share consists of electric energy generated in a renewable manner which cannot be directly integrated into the power grid and is therefore left unused. The special charging mode of operation, however, enables the grid integration and utilization of the surplus electric energy generated in a renewable manner, thereby significantly saving other electric energy shares during charging. The surplus electric energy generated in a renewable manner is preferably provided by a renewable energy converter, for example a solar device or a wind device, which is ideally arranged in the surroundings of the charging station.

[0017] The optimization can include temporarily interrupting the charging in the event that the surplus share is not provided by the charging station. The electric vehicle is charged exclusively using the time periods in which there is a surplus share of electric energy generated in a renewable manner, while complementary time periods are avoided.

[0018] The electric vehicle or the charging station generates a charging report after charging and provides the generated report. The report indicates the charging process efficiency, i.e. the degree of utilization of the surplus electric energy generated in a renewable manner.

[0019] Upon activation of the special charging mode of operation, the charging device advantageously signals to the charging station about the charging maximum duration and / or the charging time flexibility. The maximum duration defines a time interval in which a predetermined charging goal, for example an 80% state of charge (SoC), should be reached. Within this defined time interval, the surplus electric energy generated in a renewable manner should be used as much as possible to charge the electric vehicle. This variant is suitable for cases in which the electric vehicle is parked for several hours, for example overnight.

[0020] The signaled time flexibility gives the use of the surplus electric energy generated in a renewable manner a higher priority than the adherence to the charging maximum duration. This variant is suitable for cases in which the electric vehicle is not used for a long time.

[0021] A further subject of the present application is a charging station for an electric vehicle. The charging station can be designed as a wall-mounted charging box and serves to charge an electric vehicle, more precisely a traction battery or high-voltage battery (HV battery) of an electric vehicle. The charging station comprises a controller which is designed to cooperate with a charging device of the electric vehicle during charging of the electric vehicle connected to the charging station.

[0022] According to the application, the charging station is designed to participate in the method according to the embodiments of the application. In other words, the charging station can perform the method together with a correspondingly configured electric vehicle. The method enables the charging station to use as high a proportion as possible of the excess electrical energy generated in a renewable manner to charge a correspondingly configured electric vehicle.

[0023] A further subject of the application is a charging device for an electric vehicle. The charging device is used to control the charging of a traction battery of an electric vehicle. The charging device is designed to charge the electric vehicle in cooperation with a charging device of a charging station connected to the electric vehicle.

[0024] According to the application, the charging device is designed to participate in the method according to the embodiments of the application. In other words, the charging device can perform the method together with a correspondingly configured charging station. The method enables the charging device to use as high a proportion as possible of the excess electrical energy generated in a renewable manner to charge the electric vehicle when the electric vehicle is connected to a correspondingly configured charging station.

[0025] A fourth subject of the application is an electric vehicle. The electric vehicle comprises a traction battery and a charging device connected to the traction battery to control the charging of the traction battery.

[0026] According to the application, the electric vehicle comprises a charging device according to the embodiments of the application. Due to the charging device according to the application, the electric vehicle can be charged exclusively using excess electrical energy generated in a renewable manner and the charging can be initiated simply.

[0027] A significant advantage of the method according to the application is that the method optimizes the renewable proportion of the charging electrical energy and can be initiated simply. Charging the electric vehicle exclusively using excess electrical energy generated in a renewable manner makes more efficient use of renewable energy, reduces the consumption of other forms of energy and reduces the load on the power grid connected to the charging station. BRIEF DESCRIPTION OF DRAWINGS

[0028] The application is illustrated schematically in the drawings by embodiments and is further explained with reference to the drawings. In which:

[0029] Figure 1 An electric vehicle according to an embodiment of the application is shown. DETAILED DESCRIPTION

[0030] Figure 1An electric vehicle 1 according to an embodiment of the application is shown. The electric vehicle 1 has a charging device 10 according to an embodiment of the application. The electric vehicle 1 is located at a charging station 2, e.g. a wall-mounted charging box, and is connected with the charging station 2. The charging device 10 and the charging station 2 are designed to participate in the method according to an embodiment of the application and to jointly, i.e. cooperatively, perform the method according to the application, as outlined below, to charge the electric vehicle 1.

[0031] The special charging operation mode is activated by simply manipulating a dedicated charging button 3. The infotainment system 11 of the electric vehicle 1 can provide the dedicated charging button 3. Alternatively, the application 40 of the mobile terminal device 4 can provide the dedicated charging button 3. Ideally, the user interface of the infotainment system 11 or the user interface of the application 40 provides the dedicated charging button 3 on the topmost layer of the user interface.

[0032] Upon activation of the special charging operation mode, the charging device 10 can signal to the charging station 2 about the charging maximum duration and / or the charging time flexibility.

[0033] The electric vehicle 1 connected with the charging station 2 is charged using the electrical energy provided by the charging station 2.

[0034] During charging, the charging device 10 of the electric vehicle 1 cooperates with the charging station 2 in order to optimize the renewable share of the charging electrical energy in the special charging operation mode. For example, the electric vehicle 10 cooperates with the charging station 2 over a direct connection between the electric vehicle 1 and the charging station 2. Alternatively, the charging device 10 and the charging station 2 can cooperate over at least one cloud, in particular a vehicle cloud 12 and a charging station cloud 13 different from the vehicle cloud 12, to which the electric vehicle 1 and the charging station 2 are connected, respectively.

[0035] Preferably, an excess share of the renewable share is maximized. To this end, the optimization can include temporarily interrupting the charging in case the excess share is not provided by the charging station 2.

[0036] The electric vehicle 1 can generate and provide a charging report after charging. Alternatively, the charging station 2 can generate and provide a charging report after charging.

[0037] List of reference signs

[0038] 1 electric vehicle

[0039] 10 charging device

[0040] 11 infotainment system

[0041] 12 vehicle cloud

[0042] 13 charging station cloud

[0043] 2 charging station

[0044] 3 Dedicated charging button

[0045] 4. Mobile terminal devices

[0046] 40 applications

Claims

1. A method for charging an electric vehicle (1), wherein, - Use the electrical energy provided by the charging station (2) to charge the electric vehicle (1) connected to the charging station (2); - Enables the charging equipment (10) of the electric vehicle (1) to cooperate with the charging station (2) during charging in order to optimize the renewable share of charging energy in special charging operation modes; and - The special charging operation mode is activated by simply manipulating the dedicated charging button (3).

2. The method according to claim 1, wherein, The dedicated charging button (3) is provided by the infotainment system (11) of the electric vehicle (1) or the application (40) of the mobile terminal device (4).

3. The method according to claim 2, wherein, The dedicated charging button (3) is provided on the top layer of the user interface of the infotainment system (11) or the user interface of the application (40).

4. The method according to any one of claims 1 to 3, wherein, Maximize the use of the surplus share of renewable resources.

5. The method according to claim 4, wherein, The optimization includes temporarily interrupting charging when the charging station (2) does not provide an excess share.

6. The method according to any one of claims 1 to 5, wherein, The electric vehicle (1) or charging station (2) generates and provides a charging report after charging.

7. The method according to any one of claims 1 to 6, wherein, When the special charging operation mode is activated, the charging device (10) sends a signal to the charging station (2) regarding the maximum charging duration and / or charging time flexibility.

8. A charging station (2) for an electric vehicle (1), the charging station being designed to participate in the method according to any one of claims 1 to 7.

9. A charging device (10) for an electric vehicle (1), the charging device being designed to participate in the method according to any one of claims 1 to 7.

10. An electric vehicle (1) having a charging device (10) according to claim 9.

Images