Mobile charging station and method for charging electric vehicles from the mobile charging station

Abstract

A mobile charging station is equipped with a battery (1100) of the mobile charging station (1000), an input module (1300) with at least one input (1310), and an output module (1700) with at least one output (1710). The mobile charging station (1000) is configured to: couple (2100) the battery (1100) of the mobile charging station (1000) to an electric vehicle for charging (2500) a battery of the electric vehicle according to the CCS standard; and couple (3100) the battery (1100) of the mobile charging station (1000) to another charging station for charging (3500) the battery (1100) of the mobile charging station (1000) according to the CCS standard.

Description

The present invention relates to a mobile charging station and a method for charging electric vehicles from the mobile charging station.Prior ArtElectric vehicles use a battery, such as a lithium-ion battery or a lithium-polymer battery, for operating an electric motor of the electric vehicle.For charging the battery, charging stations provided in an area for charging are used. Charging stations are not available in every area, however. In particular, a charging station may not be available when the energy stored in the battery is used up. In such a case, an electric vehicle with the energy available to the electric vehicle can no longer reach a stationary charging station.Mobile charging stations for electrically charging electric vehicles are known from the prior art.DE 10 2017 220 017 A1 discloses a mobile charging station for electrically charging electric vehicles, which comprises at least one battery unit, at least one first charging interface for charging the battery unit, at least one second interface for charging an electric vehicle from the battery unit, means for automatically navigating the mobile charging station and means for receiving a charging request.DE 10 2017 219 760 A1 discloses a mobile charging station, in particular a portable charging station, for charging an electric vehicle, having at least one energy unit which has at least one energy store and / or at least one power generator, and having at least one first charging interface for coupling and energy transmission to the electric vehicle to be charged.DE 10 2016 014 034 A1 discloses a method for the mobile charging of a vehicle battery of an electric vehicle, a charging system, a mobile charging station and an electric vehicle. The vehicle battery is used as an energy store for an electric traction drive of the electric vehicle. Furthermore, the method provides for charging of the vehicle battery of the electric vehicle, wherein the charging of the vehicle battery is carried out during the travel of the electric vehicle and wherein the electric vehicle and the mobile charging station move at the same travel speed during the charging process of the vehicle battery.Disclosure of the InventionThe invention provides a mobile charging station and method for charging electric vehicles from the mobile charging station having the features of independent claims 1 and 5, respectively.Preferred embodiments are the subject matter of the respective dependent claims.The invention enables charging of the mobile charging station from different charging stations and different manufacturers, and charging of electric vehicles from different manufacturers.The mobile charging station according to the invention enables, in particular, the battery of an electric vehicle with an empty battery to be charged, so that the electric vehicle can reach at least one stationary charging station. Towing of the electric vehicle can be prevented with the mobile charging station.According to a first aspect, the invention relates to a mobile charging station having a battery of the mobile charging station; an input module having at least one input; an output module having at least one output; wherein the mobile charging station is configured to: couple the battery of the mobile charging station to an electric vehicle for charging a battery of the electric vehicle according to the CCS standard; and couple the battery of the mobile charging station to another charging station for charging the battery of the mobile charging station according to the CCS standard.According to a further development, the battery of the mobile charging station is of modular construction in order to increase or decrease a capacity of the battery of the mobile charging station as required.According to one development, the mobile charging station comprises a cooling system for cooling the battery of the mobile charging station, such that the battery of the mobile charging station does not exceed a predefined temperature during charging of the battery of the electric vehicle and / or during charging of the battery of the mobile charging station.According to one development, the input module comprises a plurality of inputs and the output module comprises a plurality of outputs for coupling the mobile charging station to a plurality of other charging stations and / or to a plurality of electric vehicles.According to a second aspect, the invention relates to a method for charging an electric vehicle from the mobile charging station as described above. The method includes: coupling the battery of the mobile charging station to the electric vehicle; and charging a battery of the electric vehicle according to the CCS standard.According to a further development, the method comprises: receiving, from the electric vehicle, data for defining parameters for performing a charging operation; and transmitting, to the electric vehicle, the defined parameters for performing the charging operation.According to one development, the method comprises: optionally receiving, from the electric vehicle, a request to end the charging; ending the charging; ending the communication with the electric vehicle; and decoupling the electric vehicle from the mobile charging station.According to a third aspect, the invention relates to a method for coupling the battery of the mobile charging station to another charging station; and charging the battery of the mobile charging station according to the CCS standard.According to a development, the method comprises: transmitting, to the other charging station, data for defining parameters for carrying out a charging operation; and receiving, from the other charging station, the defined parameters for carrying out the charging operation.According to one development, the method optionally comprises sending, to the other charging station, a request to end the charging; ending the charging; ending the communication with the other charging station; and decoupling the mobile charging station from the other charging station.Brief Description of the DrawingsIt shows: FIG. 1 shows a schematic illustration of an exemplary mobile charging station according to an embodiment of the invention; and FIG. 2 shows a schematic illustration of an exemplary method for charging an electric vehicle from the mobile charging station according to an embodiment of the invention; and FIG. 3 shows a schematic illustration of an exemplary method for charging the mobile charging station according to an embodiment of the invention.In all figures, identical or functionally identical elements and devices are provided with the same reference numerals. The numbering of method steps is for clarity and is generally not intended to imply a particular chronological order. In particular, a plurality of method steps can also be carried out simultaneously.DESCRIPTION OF THE EMBODIMENTSFIG. 1 shows a schematic illustration of an exemplary mobile charging station 1000 according to an embodiment of the invention.The mobile charging station 1000 comprises a battery 1100, for example a lithium-ion battery or a lithium-polymer battery. The battery 1100 may be configured to operate an electric motor of the mobile charging station 1000. The battery 1100 may include a plurality of battery cells, for example. 200, 400 or 600 battery cells. The energy store preferably has a capacity of at least 50 kWh, preferably of at least 150 kWh and particularly preferably of at least 300 kWh. The battery 1100 may be of modular construction, i.e. the battery 1100 may have a multiplicity of modules which can be coupled to one another in order to increase or decrease a capacity of the charging station 1000 as required. For example, the battery 1100 may be modular to enable use of the battery 1100 in a multicopter as the mobile charging station 1000.The mobile charging station 1000 further comprises a management system 1200 for managing the battery 1100. An input module 1300 of the mobile charging station 1000 comprises at least one input 1310. The at least input 1310 enables charging with plugs from different manufacturers and / or according to different standards such as, for example. CCS, CHAdeMO, type 2, type 1 and / or CEE to increase the number of usable energy sources in an area.The mobile charging station 1000 may include a unit 1400 for controlling the input module 1300. The unit 1400 may be coupled to the input module 1300 and the management system 1200 for controlling charging at the input 1310 of the input module 1300.The mobile charging station 1000 may include a DC-DC converter 1500 for adjusting voltage levels in the charging station, both when charging the mobile charging station 1000 and when charging electric vehicles from the mobile charging station 1000. The DC-DC converter 1500 may be coupled to the management system 1200.The mobile charging station 1000 may include a unit 1600 for controlling an output module 1700. The unit 1600 may be coupled to the input module DC-DC converter 1500 and the management system 1200 for controlling charging at at least one output 1710, 1720 of the input module output module 1700.The mobile charging station 1000 may include a controller 1800 for controlling a cooling 1900 of the battery 1100. Chemical conversion processes can lead to the possibility, for example. Lithium-ion batteries or lithium-polymer battery cells heat up in particular when electrical energy is emitted and / or absorbed. The cooling 1900 of the battery 1100 ensures, by means of the controller 1800, that the battery 1100 does not exceed a predetermined temperature.The preferred temperature range of lithium ion battery cells is approximately between 5° C. and 35° C. Furthermore, a temperature gradient in the battery cannot exceed 5 K. The cooling 1900 may, for example, be provided. The cooling plates comprise cooling plates through which a liquid, such as a water / glycol mixture, flows.As shown in FIG. 1, components of the mobile charging station 1000 can be coupled to one another in order to enable, for example, communication of data between the components. The mobile charging station 1000 can also comprise means for wirelessly communicating, for example for communicating between individual battery modules and / or for communicating with an external radio- and / or satellite-based communication network.FIG. 2 shows a schematic illustration of an exemplary method 2000 for charging an electric vehicle from a mobile charging station according to an embodiment of the invention.The method 2000 may include one or more of the following steps. coupling 2100 an electric vehicle to the mobile charging station according to the CCS standard. receiving 2200 data for setting parameters for performing a charging operation, such as a number of a protocol according to which the charging operation is to be performed, and / or thresholds for the power to be transmitted. sending 2300 the set parameters to perform the load operation. receiving 2400 a notification of whether or not the electric vehicle accepts the specified parameters.In the event that the electric vehicle accepts the specified parameters, after receiving 2400 the notification, charging 2500 of a battery of the electric vehicle according to the specified parameters; optionally receiving 2600 a request to end charging 2500; ending 2700 charging 2500; ending 2800 communication with the electric vehicle; and decoupling 2900 the electric vehicle from the mobile charging station may take place.In the event that the electric vehicle does not accept the specified parameters, after receiving 2400 the request, termination 2800 of the communication with the electric vehicle; and decoupling 2900 of the electric vehicle from the mobile charging station can take place.FIG. 3 shows a schematic illustration of an exemplary method 3000 for charging the mobile charging station according to an embodiment of the invention.The method 3000 may include one or more of the following steps. Coupling 3100 the mobile charging station to another charging station, in particular another fast charging station operating according to the CCS standard, starting 3200 the unit for controlling the charging of the mobile charging station. transmitting 3300, in particular transmitting and / or receiving, data for defining parameters for performing a charging operation, such as actual and desired charging levels and / or threshold values for the power to be transmitted. sending 3400 a request whether or not the mobile charging station accepts the set parametersIn the event that the mobile charging station accepts the specified parameters, after the transmission 3400 of the request, charging 3500 and optionally waiting for power transfer; optional cyclical transmission 3600 of a charging voltage and / or a charging current; optional transmission 3700, of a request to end charging 3500 with or without ending charging 3500; ending 3800, of the communication with the electric vehicle; and decoupling 3900 of the electric vehicle from the mobile charging station can take place.In the event that the electric vehicle does not accept the specified parameters, after receiving 3400 the request, termination 2800 of the communication with the electric vehicle; and decoupling 2900 of the electric vehicle from the mobile charging station can take place.The charging of a vehicle from the mobile charging station and the charging of the mobile charging station from another charging station can be carried out using the same method.References included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 10 2017 220 017 A1

[0005] DE 10 2017 219 760 A1

[0006] DE 10 2016 014 034 A1

[0007]

Claims

A mobile charging station (1000) comprising: a battery (1100) of the mobile charging station (1000); an input module (1300) having at least one input (1310); an output module (1700) having at least one output (1710); wherein the mobile charging station (1000) is configured to: couple (2100) the battery (1100) of the mobile charging station (1000) to an electric vehicle for charging (2500) a battery of the electric vehicle according to the CCS standard; and couple (3100) the battery (1100) of the mobile charging station (1000) to another charging station for charging (3500) the battery (1100) of the mobile charging station (1000) according to the CCS standard.The mobile charging station (1000) of claim 1, wherein the battery (1100) of the mobile charging station (1000) is modular to increase or decrease a capacity of the battery (1000) of the mobile charging station (1000) as needed.The mobile charging station (1000) according to claim 1 or 2, wherein the mobile charging station (1000) comprises a cooling (1900) for cooling the battery (1100) of the mobile charging station (1000) such that the battery (1100) of the mobile charging station (1000) does not exceed a predetermined temperature when charging the battery of the electric vehicle and / or when charging the battery (1100) of the mobile charging station (1000).The mobile charging station (1000) of any one of claims 1 to 3, wherein the input module (1300) comprises a plurality of inputs (1310) and the output module (1700) comprises a plurality of outputs (1710) for coupling the mobile charging station (1000) to a plurality of other charging stations and / or to a plurality of electric vehicles.A method for charging an electric vehicle from the mobile charging station (1000) according to any one of claims 1 to 4, comprising: coupling (2100) the battery (1100) of the mobile charging station (1000) to the electric vehicle; and charging (2500) a battery of the electric vehicle according to the CCS standard.The method of claim 5, further comprising: receiving (2200), from the electric vehicle, data for setting parameters for performing a charging operation; and transmitting (2300), to the electric vehicle, the set parameters for performing the charging operation.The method of claim 5 or 6, further comprising: optionally receiving (2600) from the electric vehicle a request to end charging (2500); ending (2700) charging (2500); ending (2800) communication with the electric vehicle; and decoupling (2900) the electric vehicle from the mobile charging station (1000).A method of charging the mobile charging station (1000) of any one of claims 1 to 4, comprising: coupling (3100) the battery (1100) of the mobile charging station (1000) to another charging station; and charging (3500) the battery (1100) of the mobile charging station (1000) according to the CCS standard.The method of claim 8, further comprising: sending (3300), to the other charging station, data for setting parameters for performing a charging operation; and receiving (3300), from the other charging station, the set parameters for performing the charging operation.The method of claim 8 or 9, further comprising: optionally sending (3700), to the other charging station, a request to end charging (3500); ending charging (3500); ending (3800) communication with the other charging station; and decoupling (3900) the mobile charging station (1000) from the other charging station.

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