Charging system, DC charging station and process

Abstract

Charging system (200) comprising at least one DC charging station (220) for charging at least one HV battery (220) for driving an electric motor vehicle, designed and configured to be connected to at least one first electric motor vehicle (210) by means of a charging cable in order to charge its HV battery (220), wherein the DC charging station (230) has a temperature control device with a medium for temperature control of the DC charging station and / or the charging cable during charging by means of the medium; and wherein the DC charging station (230) is connected and / or connectable to at least one of a further DC charging station (330a, 330b), a further motor vehicle (310a, 310b) or an infrastructure in such a way as to temperature-control at least one component or an area of one of the further DC charging station (330a, 330b), the further, in particular electric, motor vehicle (310a, 310b) or the infrastructure (340).

Description

[0001] The invention relates to a charging system, a DC charging station and a charging method as well as a control device for carrying out the charging method.

[0002] DC charging stations are well-known in the art. They are used primarily to charge high-voltage batteries (HV batteries) in electric vehicles, enabling them to power the vehicles. The DC charging stations are connected to vehicle sockets via charging cables for charging. This can generate heat, which can be dissipated via a cooling jacket, for example, around the charging cable through which a medium flows, to prevent overheating. When charging with high currents to achieve fast charging times, the HV battery can heat up considerably. At high temperatures, the charging power can be drastically reduced. At low temperatures, the charging power can also be drastically reduced.

[0003] The object of the invention is to improve the temperature control.

[0004] The object is achieved in particular by a charging system having the features of claim 1. The object is achieved in particular by a DC charging station having the features of claim 7. The object is achieved in particular by a charging method having the features of claim 8. The object is achieved in particular by a control device having the features of claim 10.

[0005] Further features and details of the invention emerge from the dependent claims, the description, and the drawings. Features and details described in connection with the charging system according to the invention naturally also apply in connection with the DC charging station according to the invention, the charging method according to the invention, the computer program product according to the invention, the control device according to the invention, and the storage device according to the invention. This also applies vice versa, so that with regard to the disclosure of the individual aspects of the invention, reference is always made to each other.

[0006] According to one aspect, the object is achieved in particular by a charging system having the features of claim 1.

[0007] The charging system may comprise at least one DC charging station for charging at least one HV battery for powering an electric motor vehicle (EV). The charging system may be designed and configured to be connected to at least one first electric motor vehicle via a charging cable in order to charge its HV battery. The DC charging station may comprise a temperature control device with a medium for controlling the temperature of the DC charging station during charging using the medium. Alternatively or additionally, the DC charging station may comprise a temperature control device with a medium for controlling the temperature of the charging cable during charging using the medium.The charging station can be connected to at least one of another DC charging station, another, in particular electric, motor vehicle or infrastructure in such a way as to temperature control at least one component or area of one of the another DC charging station, the another, in particular electric, motor vehicle or infrastructure. Alternatively or additionally, the charging station can be connectable to at least one of another DC charging station, another, in particular electric, motor vehicle or infrastructure in such a way as to temperature control at least one component or area of one of the another DC charging station, the another, in particular electric, motor vehicle or infrastructure.

[0008] The charging system makes it possible to improve the temperature control of the HV battery of the first electric motor vehicle. The charging system enables the temperature control of the HV battery of the first electric motor vehicle to be coupled with the temperature control of other components and areas in a temperature distribution network. This makes it possible to better meet temperature control requirements, as multiple components and / or areas, such as another DC charging station, another vehicle, or infrastructure, can be included in meeting the temperature control requirements.

[0009] Here and elsewhere herein, an electric motor vehicle can be understood to mean, in particular, a fully electric motor vehicle, which can therefore be driven purely by at least one electric drive that can be supplied by the HV battery. Alternatively or additionally – if there are multiple motor vehicles, it may be that different types of motor vehicles can be provided that can be connected to the charging system – an electric motor vehicle can be understood to mean a hybrid motor vehicle, which can therefore in particular have, in addition to at least one electric drive, at least one other type of drive, in particular an internal combustion engine. The at least one electric drive can be powered by the HV battery.

[0010] The medium can be one that allows heat to be absorbed and transported over a distance, particularly in insulated hoses and / or lines. The lines and / or hoses can be connected via adapters, for example, when plugging in a charging cable with a cooling jacket, to also enable the exchange of the medium between the different areas of the charging system.

[0011] The infrastructure can be a petrol station (also in the sense of an electric charging station), a private house or another type of building, such as a stop, in particular a bus stop or a train station building.

[0012] According to one aspect, tempering can be at least one of cooling and heating. When charging with high currents to achieve fast charging times, the HV battery can become very hot.

[0013] At high temperatures, charging performance can be drastically reduced. This can be counteracted by cooling to dissipate the excess heat. This can be distributed to other components and / or areas of the charging system via a controlled flow of the medium. Appropriate devices can be designed and configured for this purpose, such as lines, hoses, cooling jackets, and connections with connecting devices, as described elsewhere herein.

[0014] At low temperatures, charging power can be drastically reduced. This can be counteracted by heating. A medium can transport heat from another component and / or another area, where there is excess heat, to the HV battery and / or the charging station and / or the charging cable (the temperature control jacket). Accordingly, heat from other components and / or areas of the charging system can be distributed via a controlled flow of the medium. Appropriate devices can be designed and configured for this purpose, such as lines, hoses, cooling jackets, and connections with terminal devices, as described elsewhere herein.

[0015] According to one aspect, the charging system can be designed and configured to determine a temperature control requirement of at least one of the further DC charging station, the further, in particular electric, motor vehicle or the infrastructure in order to plan a supply and / or distribution of medium accordingly. This can enable a demand-adapted distribution of medium, for example in order to cover a demand as best as possible. In this case, a demand for the various components and / or areas can be determined. In this case, a difference between the various demands and the various determined demands or the actual temperatures can be minimized by means of a calculation that can also include measured temperatures at various points in the charging system.

[0016] According to one aspect, the DC charging station, in particular the charging cable, and the medium can be designed for controlling the temperature of a medium supplied by the HV battery of the first electric motor vehicle or the interior of the first electric motor vehicle. The motor vehicle can also be designed and configured to enable an exchange of the medium with the DC charging station. Furthermore, at least one line for the medium can be led away from and / or supplied to the DC charging station in order to enable a flow of medium to other components and / or regions of the charging system, as described elsewhere herein.

[0017] According to one aspect, the component can be an HV battery of the at least one further, in particular electric, motor vehicle. Alternatively or additionally, the region can be at least one of an interior of the at least one further, in particular electric, motor vehicle and / or an interior of the infrastructure.

[0018] In embodiments, the charging cable can be temperature-controlled using a liquid medium. This medium can be used to temperature-control the HV battery during the charging process, as already explained elsewhere herein, which offers particular performance and efficiency advantages over in-vehicle battery temperature control.

[0019] Similarly, the medium can be used to regulate the temperature of the HV battery during the charging process. Alternatively or additionally, the medium can be used to condition the vehicle's interior, particularly to heat or cool it.

[0020] Alternatively or additionally, the return flow of the medium from one of the vehicles can be used to provide interior air conditioning (heating or cooling) in the connected infrastructure (e.g. petrol station).

[0021] The charging system can also be used in (private) homes and use the heat to temper the house or dissipate it.

[0022] The interior of an infrastructure can in particular be the interior of a petrol station (also in the sense of an electric charging station), a private house or another type of building, such as a stop, in particular a bus stop or a train station building.

[0023] According to one aspect, the charging system can be configured and designed to distribute the medium according to the determined temperature control requirement and, in doing so, to determine and, in particular, to output a price for billing.

[0024] The charging system can therefore be designed and configured in particular to exchange a medium with a temperature control device, such as a heating and / or air conditioning system of an infrastructure, or to be in fluid communication with this in order to be able to carry out temperature control, in particular based on a need.

[0025] Furthermore, the return flow of the medium from a motor vehicle, in particular the first electric motor vehicle, can be used to provide preconditioned medium for other motor vehicles at connected charging stations, as described elsewhere herein. The same applies to infrastructure, as described elsewhere.

[0026] This allows a price to be determined based on the distributed flow of the medium or the volume flow of the medium. This allows the operator of the DC charging station to generate revenue from the amount of heat released.

[0027] According to an independent aspect, a DC charging station can be designed and configured to be used in a charging station system as described elsewhere, i.e. to be connected to and used therewith.

[0028] The DC charging station can be described by the features, properties, and advantages of the charging system, the charging method, the control device, the computer program product, and the storage device. This also applies across the category boundaries of method, use, device, and system. Thus, the charging system, the charging method, the control device, the computer program product, and the storage device can also be described by the features, properties, and advantages of the DC charging station. For the sake of readability and compactness, a repetition of all these features, properties, and advantages has been omitted.

[0029] According to an independent aspect, a charging method for charging an HV battery can be provided. The method can comprise the step of charging an HV battery of a first motor vehicle. The method can comprise the step of determining a temperature control requirement of at least one area or component of at least one of the first motor vehicle, the at least one further motor vehicle, or the infrastructure. The method can comprise the step of determining a medium supply line for approximating the determined temperature control requirement. This allows a distribution of the medium to be planned, in particular according to a determined requirement.

[0030] According to one aspect, the charging method may include the step of supplying the medium to at least one area or component of at least one of the first motor vehicle, the at least one further motor vehicle, or the infrastructure. This may enable distribution of the medium according to the respectively determined need.

[0031] The charging method can be described by the features, properties, and advantages of the charging system, the DC charging station, the control device, the computer program product, and the storage device. This also applies across the category boundaries of method, use, device, and system. Thus, the charging system, the DC charging station, the control device, the computer program product, and the storage device can also be described by the features, properties, and advantages of the charging method. For the sake of readability and compactness, a repetition of all these features, properties, and advantages has been omitted.

[0032] Further advantages, features, and details of the invention will become apparent from the following description, which describes embodiments of the invention in detail with reference to the drawings. The features mentioned in the claims and in the description may be essential to the invention individually or in any combination. They show schematically: Fig. 1 shows an embodiment of a charging system; Fig. 2 shows a representation of another embodiment of a charging system; and Fig. 3 a representation of an embodiment of a charging method.

[0033] Fig. 1 shows an illustration of an exemplary embodiment of a charging system 200. The charging system 200 comprises, in particular, a motor vehicle 206 that can be electrically operated, i.e., in particular, an electric motor and / or a hybrid motor (both not shown here), which can be powered by a high-voltage battery 220 (hereafter referred to as an HV battery). The HV battery can be charged via a DC charging station 230, in particular by inserting a charging plug (not shown) into a charging socket (not shown).

[0034] This can lead to heating of the HV battery, which can reduce the charging power. Therefore, a heat flow 212 can be generated via a medium by supplying a medium to the HV battery 220 in a cooling flow 210, in particular with maximum cooling power, and wherein the heat flow 212 can be generated by a return flow of the heated medium to the DC charging station 230, at which a low temperature exists, in particular lower than the excessively high temperature 208 of the HV battery 220. A temperature 208 is particularly too high if the HV battery 220 ages more quickly during continuous operation at this temperature, i.e., at a lower temperature.

[0035] Alternatively or additionally, a medium flow can also be formed to create a cooling flow 202 with high cooling capacity, in that the medium flow can flow from the DC charging station 230 via the HV battery 220 to an interior 205 of the motor vehicle 210. The medium can form a heat flow 204 from the interior 205 of the motor vehicle 210, wherein a medium flowing with high cooling capacity by means of the cooling flow 202, for example to an air conditioning system of the motor vehicle 210, in order to cool the interior 205 of the motor vehicle 210, cools the interior 205 of the motor vehicle 210 from a high temperature 206 by the medium absorbing heat in order to flow back to the HV battery 220 as heat flow 204 with dissipated heat. The interior 205 can then be heated to approximately 20°C to 22°C. A medium can supply heat to the DC charging station 230 as current 212 in order to increase a low temperature 214.This makes it possible to establish heat transport between the various components, devices and systems as shown here, which may also be referred to as instances of a temperature control network 300, as in the . Fig. 2 and described accordingly.

[0036] Fig. 2 shows a representation of another exemplary embodiment of a charging system 200 with a temperature control network 300. The charging system 200, as shown in the Fig. 1, is also part of the tempering network 300, as shown in the Fig. 2. With regard to the charging system 200, reference is made to the explanations relating to Fig. 1. The charging system 200 has, in particular, at least one DC charging station 220 for charging at least one HV battery 220 for powering an electric motor vehicle 210.

[0037] The DC charging station 220 is particularly designed and configured to be connected to at least one first electric motor vehicle 210 via a charging cable in order to charge its HV battery 220. The DC charging station 230 can have a temperature control device with a medium to control the temperature of the DC charging station 230 and / or the charging cable during charging using the medium. A medium can dissipate heat from the DC charging station 230 as current 212, for example, in order to be able to supply it to other DC charging stations. Corresponding return flows of the medium are not shown for reasons of clarity.

[0038] The DC charging station 230 can be connected to at least one of another DC charging station 330a, 330b, another motor vehicle 310a, 310b, or an infrastructure 340. Alternatively or additionally, the DC charging station 230 can be connectable to at least one of another DC charging station 330a, 330b, another motor vehicle 310a, 310b, or an infrastructure 340 in such a way as to temperature-control at least one component or area of one of the other DC charging station 330a, 330b, the other, in particular electric, motor vehicle 310a, 310b, or the infrastructure 340.

[0039] Tempering can be at least one of cooling and heating. For example, a medium flow can be formed between the aforementioned DC charging station 230, another DC charging station 330a, 330b, another motor vehicle 310a, 310b, or an infrastructure 340, as described elsewhere herein. This can create a tempering network 300. For this purpose, a cooling flow 202 with high cooling capacity can be formed, which can, for example, cool a DC charging station 330b, while an HV battery 320b can be heated if the temperature is too low.

[0040] Alternatively or additionally, a motor vehicle 310b or its interior 205 can be cooled by providing a cooling stream 202 with a high cooling capacity to a corresponding cooling device (not shown) for the interior 205, for example via a sheath of a charging cable. Here and elsewhere, a cooling stream 202 with a high cooling capacity can have a lower cooling capacity than a cooling stream 202 originally supplied by the DC charging station 230 with a low temperature 214 (compared to the other components, devices and systems shown, also referred to as instances of a temperature control network 300, as shown in Fig. 2 is shown).

[0041] Alternatively or additionally, an infrastructure 340, i.e. a private home, a charging station, a gas station, a bus stop, a train station or the like, can be heated with a heat flow 212 from at least one DC charging station 230 in order to increase a lower temperature 314.

[0042] The charging system 200 can be designed and configured to determine a temperature control requirement of at least one of the further DC charging station 330a, 330b, the further, in particular electric, motor vehicle 310a, 310b, or the infrastructure 340 in order to plan a supply and / or distribution of medium accordingly. Two further DC charging stations 330a, 330b and two further electric motor vehicles 310a, 310b are shown here as examples; however, the (intelligent) temperature control network 300 (also referred to as a, in particular, intelligent, heating network) can have a multitude of further instances, such as motor vehicles 310a, 310b with HV batteries 320a, 320b, DC charging stations 330a, 330b, and infrastructure 340, in order to be able to distribute heat in this temperature control network.This allows a high temperature 208, a low temperature 214, and a medium temperature 206, for example, of the HV batteries 220, 320a, 320b, but also of the motor vehicles 310a, 310b, 210, or of their interior 205, to be adjusted to meet a specific demand. For this purpose, medium flows can form heat flows 212 with high thermal output or heat flows 204 with dissipated heat in order to distribute the heat in the charging system 200 in a temperature control network 300.

[0043] The temperature control network 300 can, in particular, be an intelligent temperature control network 300, in which the charging system 200 is configured and designed to distribute the medium according to a determined temperature control requirement. The temperature control requirement can be determined using mathematical methods and by calculating heat flows, possibly taking losses into account. A price can also be determined, which can also be output, in particular, for billing purposes.

[0044] Fig. 3 shows an illustration of an embodiment of a charging method 100. The charging method 100 is designed in particular for charging an HV battery 220. The method comprises in particular the step of charging 110 an HV battery 220 of a first motor vehicle 210, as shown schematically in the Fig. 1 and Fig. 2 is shown.

[0045] The charging method 100 comprises in particular the step of determining 120 a temperature control requirement of at least one area or of at least one component of at least one of the first motor vehicle 210, the at least one further motor vehicle 310a, 310b or the infrastructure 340, as shown schematically in the Fig. 1 and Fig. 2 is shown.

[0046] The charging method 100 comprises in particular the step of determining 130 a medium supply line for approximating the determined temperature control requirement.

[0047] The charging method 100 comprises, in particular, the step of supplying 140 medium to at least one area and / or to at least one component of at least one of the first motor vehicle 210, the at least one further motor vehicle 310a, 310b or the infrastructure 340.

[0048] A computing device 400, such as a computer, may include a control device 430 having a memory device 420 that holds a computer program product 410 to be read by the control device 430 to enable execution 150 of a charging method 100. The computing device 400 may be provided in a DC charging station 230, in a motor vehicle 210, 310a, 310b, or in an infrastructure 340. Alternatively or additionally, it may also be a server device (not shown).

[0049] The above explanation of the embodiments describes the present invention exclusively by way of examples. Of course, individual features of the embodiments can be freely combined with one another, provided they are technically feasible, without departing from the scope of the present invention.

Claims

[1] Charging system (200) comprising at least one DC charging station (220) for charging at least one HV battery (220) for driving an electric motor vehicle, designed and configured to be connected to at least one first electric motor vehicle (210) by means of a charging cable in order to charge its HV battery (220), wherein the DC charging station (230) has a temperature control device with a medium for temperature control of the DC charging station and / or the charging cable during charging by means of the medium; and wherein the DC charging station (230) is connected and / or connectable to at least one of a further DC charging station (330a, 330b), a further motor vehicle (310a, 310b) or an infrastructure in such a way as to temperature-control at least one component or an area of one of the further DC charging station (330a, 330b), the further, in particular electric, motor vehicle (310a, 310b) or the infrastructure (340). [2] Charging system (200) according to claim 1, characterized by that tempering is at least one of cooling or heating. [3] Charging system (200) according to claim 2, characterized by that the charging system (200) is designed and configured to determine a temperature control requirement of the at least one of the further DC charging station (330a, 330b), the further, in particular electric, motor vehicle (310a, 310b) or the infrastructure (340) in order to plan a supply and / or distribution of medium accordingly. [4] Charging system (200) according to one of the preceding claims, characterized by that the DC charging station (230) and the medium are designed for tempering one of the HV battery (220) of the first electric motor vehicle (210) or the interior of the first electric motor vehicle (210). [5] Charging system (200) according to one of the preceding claims, characterized bythat the component is an HV battery (220) of the at least one further, in particular electric, motor vehicle (210); or wherein the area is at least one of an interior of the at least one further motor vehicle (310a, 310b) or an interior of the infrastructure (340). [6] Charging system (200) according to one of the preceding claims, characterized by that the charging system (200) is arranged and designed to distribute the medium according to the determined temperature control requirement and in doing so to determine a price and in particular to output it for billing. [7] DC charging station (230) designed and arranged to be used in a charging system (200) according to one of the preceding claims. [8] Charging method (100) for charging an HV battery (220), comprising the steps: - charging (110) an HV battery (220) of a first motor vehicle (210); - determining (120) a temperature control requirement of at least one area or of at least one component of at least one of the first motor vehicle (210), the at least one further motor vehicle (310a, 310b) or the infrastructure (340); and - determining (130) a medium supply line for approximating the determined temperature control requirement. [9] Charging method (100) according to claim 8, characterized by the step of supplying (140) medium to at least one area and / or to at least one component of at least one of the first motor vehicle (210), the at least one further motor vehicle (310a, 310b) or the infrastructure (340). [10] Control device (430) designed and arranged to carry out a charging method (100) according to one of claims 8 or 9.

Images