DE102020109478A1 - CHARGING ARRANGEMENT FOR CHARGING THE ENERGY STORAGE OF A MOTOR VEHICLE - Google Patents

Abstract

Charging arrangement (1) for charging an energy store (2) of a motor vehicle (3), comprising a temperature control device (4) which has a temperature control medium circuit (5) which is arranged at least in sections in the motor vehicle (3) and through which at least one temperature control medium flows or can flow , wherein the temperature control device (4) has a connection device (10) by means of which a motor vehicle section (6) of the temperature control medium circuit (5) arranged in the motor vehicle (3) can be separated or connected to a stationary section (7) of the temperature control medium circuit (5), wherein a conveying device (11) is provided which is designed to empty the temperature control means arranged in the motor vehicle section (6), in particular as a function of a vehicle state.

Description

The invention relates to a charging arrangement for charging an energy store of a motor vehicle, comprising a temperature control device which has a temperature control medium circuit which is arranged at least in sections in the motor vehicle and through which at least one temperature control medium flows or through which at least one temperature control medium flows, the temperature control device having a connection device by means of which one in the motor vehicle arranged motor vehicle section of the temperature control circuit is separably connectable or connected to a stationary section of the temperature control circuit.

Corresponding charging arrangements for charging energy stores in motor vehicles are basically known from the prior art. For example, such charging arrangements are available as charging columns or at energy sources in households in order to recharge the energy storage devices of motor vehicles. To charge the energy store, a connection between the energy store and an external energy source is established on the charging arrangement, so that the energy store inside the motor vehicle can be charged by the external energy source.

Furthermore, temperature control medium circuits or temperature control devices having temperature control medium circuits are known from the prior art, by means of which at least a section of the motor vehicle can be temperature controlled. Such temperature control medium circuits carry temperature control means, i.e. that temperature control means, for example cooling water, flow through them or can flow through them. For this purpose, the temperature control device usually has a connection through which the temperature control medium can be filled into the motor vehicle in order to control the temperature of at least one section of the motor vehicle, in particular to cool it. In particular, it is known to flow cooling water from an external supply through the temperature control circuit, which is located with at least one motor vehicle section inside the motor vehicle, in order to control the temperature of a component of the motor vehicle, for example the energy store.

Such temperature control circuits, which are located at least in sections in the interior of the motor vehicle, are disadvantageous in that the temperature control medium located in the motor vehicle section of the temperature control medium circuit has to be carried along with the motor vehicle and thus the total mass of the motor vehicle increases, which in particular has a negative impact on the energy balance of the motor vehicle will.

The invention is based on the object of specifying a charging arrangement which is improved in comparison.

The object is achieved by a charging arrangement according to claim 1. The dependent claims relate to possible embodiments.

As described above, the invention relates to a charging arrangement for charging an energy store of a motor vehicle. The charging arrangement thus has at least one external, in particular stationary, energy source, by means of which the energy store in the interior of the motor vehicle can be charged. To control the temperature of at least one section of the motor vehicle, the charging arrangement comprises a temperature control device, a stationary section of the temperature control circuit of the temperature control device being designed external to the motor vehicle, for example running in a charging column or another section of the charging arrangement, and a motor vehicle section of the temperature control medium circuit being arranged within the motor vehicle. To charge the energy store, the stationary section of the charging arrangement is to be connected to the motor vehicle, for which purpose the charging arrangement has a connection device which, for example, is in the form of a plug and a socket. When the connection device is connected, the temperature control circuit is established or closed, i.e. the motor vehicle section is connected to the stationary section of the temperature control circuit. If the motor vehicle is operated, i.e. if the motor vehicle is removed from the rest of the charging arrangement, the connection device is disconnected so that the motor vehicle can be moved.

The invention is based on the knowledge that a conveying device is provided which is designed to empty temperature control means arranged in the motor vehicle section, in particular as a function of a vehicle state. In other words, a conveying device of the loading arrangement is used to drain temperature control medium from the motor vehicle section of the temperature control medium circuit, so that the total mass of the motor vehicle can be correspondingly reduced when the motor vehicle is operated. In other words, not all of the temperature control medium used for temperature control of the at least one section of the motor vehicle has to be carried along in the motor vehicle section of the temperature control medium circuit of the temperature control device. Instead, it is possible to at least partially empty the temperature control medium or to empty at least part of the temperature control medium, so that ultimately more efficient operation of the motor vehicle is possible, since at least the total mass of the motor vehicle can be reduced by the emptied part of the temperature control medium. Especially for applications that are particularly critical with regard to the total mass of the motor vehicle, for example motorsport applications or applications in racing, advantages can result from the saving of the comparatively high weight of the temperature control medium.

As described above, the charging arrangement can be produced by the connection device for charging the motor vehicle, so that the circuit as a whole can be used to control the temperature of the motor vehicle. The term temperature control encompasses both cooling and heating, for example in the form of an auxiliary heater or for cooling the motor vehicle when the vehicle is stationary. Depending on how the charging process is carried out, the energy store can thereby be efficiently cooled; in particular, excessive heating of the energy store during a charging process can be reduced or avoided. For this purpose, the temperature control medium circuit can in particular have a stationary section and, for example, be connected to a temperature control medium supply or a temperature control medium reservoir in a charging station or in a house. The conveying device, which has been described above, can be arranged or designed on the motor vehicle side or in a stationary manner. It is also possible to provide a combination.

According to one embodiment of the charging arrangement, it can be provided that the connection device has a socket and a plug which can be separated from one another to separate the temperature control medium circuit or can be connected to one another in order to connect the temperature control medium circuit. The charging arrangement thus has a connection device which is designed in the form of a plug and a socket, so that the plug is inserted into the connector to establish the connection between the external energy source and the internal energy store in relation to the motor vehicle and the connection between the stationary section and the motor vehicle section Socket can be inserted. Likewise, by disconnecting the connection between socket and plug, the electrical connection between the external energy source of the charging arrangement and the energy store of the motor vehicle and the temperature control medium circuit can be disconnected.

The socket described above and the plug described above can have at least one corresponding connection, in particular an inlet and an outlet, which is provided for temperature control means. It is thus possible via the connection to exchange the temperature control medium between the stationary section and the motor vehicle section in a targeted manner. In particular, an inflow and outflow for the temperature control medium can be provided, so that the temperature control medium circulates into and out of the temperature control medium circuit. It may also be possible to only conduct temperature control medium into the motor vehicle section, so that ultimately passive air conditioning is carried out. It is also possible to empty the temperature control medium on the motor vehicle side through the conveying device, with temperature control medium being fed through the connection device, in particular through the socket and the plug.

According to a further embodiment of the loading arrangement, the conveying device can be assigned a valve, in particular a valve arranged in the motor vehicle section, through which valve temperature control medium accommodated in the motor vehicle section can be emptied, in particular into the environment. The valve is therefore intended to drain or discharge temperature control medium from the motor vehicle section of the temperature control medium circuit. The valve can either be connected to a reservoir or it can be used to drain the temperature control medium discharged from the motor vehicle section into the environment. If, for example, cooling water is used as the temperature control medium, this can be released into the environment without any problems. The valve can also be connected to a stationary reservoir, for example the valve can be connected to the stationary section so that temperature control medium that is emptied from the motor vehicle section via the valve can ultimately be returned to the stationary section of the temperature control medium circuit. The emptying of the temperature control medium can be assisted or ultimately passively, for example due to gravity.

According to a further embodiment, the conveying device can have at least one pressure generating device, which is designed to convey temperature control medium received from the motor vehicle section by generating a defined pressure in the motor vehicle section. In particular, the pressure generating device can be designed to generate an overpressure or a negative pressure which ultimately conveys temperature control medium from the motor vehicle section. The pressure generating device can accordingly be designed as a suction device or as a blow-out device. Ultimately, the position or the arrangement of the conveying device can be selected as desired, it being advantageous from a weight point of view to also make the conveying device stationary, ie to arrange it externally to the motor vehicle. This offers the advantage that the conveying device itself does not have to be carried along when the motor vehicle is operated or when the motor vehicle is moved. The conveying direction can thus be designed as an external pressure generating device, which is arranged stationary, for example is integrated in a stationary section of the temperature control medium circuit and is designed to generate a pressure in a defined manner so that temperature control medium can be conveyed out of the motor vehicle section. For example, the pressure can be generated in such a way that the temperature control medium can be sucked and / or blown out of the motor vehicle section.

The charging arrangement can furthermore be developed in such a way that the conveying device is designed to empty the temperature control medium by the connecting device before the connection device is disconnected. In particular, it is possible to receive or transmit a corresponding signal that indicates that the user would like to disconnect the connection device; for example, a corresponding button can be provided in the area of the connection device, which initiates disconnection of the connection device. For this purpose, the conveying device can empty the temperature control medium, for example this can be discharged into the stationary section through the connection device by generating the pressure, as described above.

The motor vehicle section can furthermore have at least one energy storage section which is in thermal contact with at least one energy storage device of the motor vehicle and is designed to control the temperature of the at least one energy storage device. Ultimately, there is a thermal contact between the energy storage section of the motor vehicle section of the temperature control medium circuit and the energy storage unit of the motor vehicle, so that the energy storage unit can be cooled by the energy storage section. In particular, heat that arises during a charging process, in particular a rapid charging process, of the energy store can be dissipated by appropriate cooling on the part of the motor vehicle section. In this way, the energy store can be prevented from heating up in order to carry out rapid charging. In particular, if the motor vehicle is to carry out rapid charging in a stationary manner in order to charge the energy store, sufficient cooling of the energy store can thus be ensured. Weight can then be saved by disconnecting the connection device or removing the temperature control medium from the motor vehicle section, since charging currents or discharge currents usually occurring during operation of the motor vehicle can be carried out by purely passive cooling or at least with a reduced amount of temperature control medium.

The conveyor device described above can also be designed to at least partially drain the temperature control circuit, in particular the motor vehicle section, depending on a vehicle state, in particular depending on a charge state of the energy store and / or at least one temperature of at least one component of the motor vehicle. For example, according to this embodiment, provision can be made for the energy storage section of the motor vehicle section of the temperature control circuit to be emptied after the charging process has ended, in particular since further cooling of the energy storage system is no longer necessary after a charging process, in particular a fast charging process, has been completed. It is also possible to cool or heat the entire motor vehicle or individual components of the motor vehicle and to indicate this by means of the vehicle status. If, for example, an interior temperature desired by a user of the motor vehicle is reached, the temperature control medium can be at least partially emptied from the motor vehicle section. This can take place in particular before the motor vehicle leaves, i.e. before the connection device is disconnected.

In addition to the charging arrangement described, the invention also relates to a motor vehicle, comprising a motor vehicle section of a temperature control circuit of a temperature control device through which at least one temperature control medium flows or can flow through, the temperature control device having a connection device by means of which the motor vehicle section of the temperature control medium circuit arranged in the motor vehicle with a stationary section of the Temperature control circuit is separably connectable or connected, wherein a conveying device is designed to empty temperature control means arranged in the motor vehicle section, in particular as a function of a vehicle state.

Furthermore, the invention also relates to a method for operating a charging arrangement for charging an energy store of a motor vehicle, comprising a temperature control device which has a temperature control medium circuit which is arranged at least in sections in the motor vehicle and through which at least one temperature control medium flows or through which at least one temperature control medium flows, the temperature control device having a connection device, by means of which a motor vehicle section of the temperature control circuit arranged in the motor vehicle is separably connectable or connected to a stationary section of the temperature control circuit, the temperature control agent arranged in the motor vehicle section being emptied, in particular depending on a vehicle state.

All advantages, details, designs and / or features that have been described in relation to the charging arrangement are self-evident transferable to the motor vehicle and the method.

• 1 eine Prinzipdarstellung einer Ladeanordnung in einer ersten Betriebssituation gemäß einem Ausführungsbeispiel;
• 2 eine Prinzipdarstellung einer Ladeanordnung in einer zweiten Betriebssituation gemäß einem Ausführungsbeispiel; und
• 3 eine Prinzipdarstellung einer Ladeanordnung in einer dritten Betriebssituation gemäß einem Ausführungsbeispiel.

The invention is explained on the basis of exemplary embodiments with reference to the figures. The figures are schematic representations and show:

• 1 a schematic diagram of a charging arrangement in a first operating situation according to an embodiment;
• 2 a schematic diagram of a charging arrangement in a second operating situation according to an embodiment; and
• 3 a schematic diagram of a charging arrangement in a third operating situation according to an embodiment.

1 shows a charging arrangement 1 for charging an energy storage device 2 of a motor vehicle 3 . The loading arrangement 1 has a temperature control device 4th on that a temperature control circuit 5 provides a motor vehicle section 6th and a stationary section 7th includes. The motor vehicle section 6th of the temperature control medium circuit 5 the temperature control device 4th is in the motor vehicle 3 arranged. The motor vehicle section 6th has an energy storage section 8th on, in particular for the temperature control of the energy store 2 is provided. The loading arrangement 1 thus has a stationary energy source 9 on that for charging the energy storage 2 is trained. The charging arrangement includes 1 a connection device 10 , in particular having a plug and a socket, which are used to establish the connection of the charging arrangement 1 are connectable and can be disconnected to disconnect the connection.

In 1 the connected state is shown in which the temperature control medium circuit 5 is closed, ie that the stationary section 7th with the motor vehicle section 6th is connected and thus temperature control medium through the temperature control medium circuit 5 can flow. At the same time there is the electrical connection between the external energy source 9 and the energy storage 2 closed, so the energy storage 2 can be loaded. In this operating situation, the motor vehicle 3 overall temperature can be controlled, for example, a desired temperature of a user in the interior of the motor vehicle 3 be set by temperature control medium, for example cooling water, a suitable temperature in or through appropriate lines in the motor vehicle 3 is flowed.

At the same time, especially if the energy storage 2 should be charged as part of a quick charge, in which the energy storage 2 comparatively strongly heated, the energy storage 2 by means of the energy storage section 8th of the temperature control medium circuit 5 be cooled. This can be done with heat from the energy store 2 or the individual energy storage cells of the energy store 2 are transferred to the temperature control medium and thus via the temperature control medium circuit 5 be dissipated, for example to a stationary heat sink.

Is the charging process finished or should the motor vehicle 3 from the stationary part of the charging arrangement 1 can be moved away by means of a conveyor 11 , which is shown stationary in this embodiment, the temperature control medium from the temperature control medium circuit 5 removed as shown in 2 is shown. The conveyor 11 can be designed to generate a pressure, that is to say as a pressure generating device, by means of which an overpressure or underpressure can be generated in order to remove the temperature control medium from the temperature control medium circuit 5 , in particular from the motor vehicle section 6th , the temperature control device 4th to drain. Alternatively or additionally, it is also possible by means of a valve 12th that is in the motor vehicle section 6th of the temperature control medium circuit 5 is arranged, temperature control medium from the temperature control medium circuit 5 to empty, especially due to gravity.

As described above, the temperature control medium can be emptied from the temperature control medium circuit 5 can be made as a function of a vehicle state, for example as a function of the state of charge of the energy storage arrangement 2 or the energy store 2 . Furthermore, reaching a desired temperature or a signal indicating the disconnection of the connection device 10 signals to be collected as vehicle condition. Then the connection device 10 be separated, for example by pulling the plug out of the associated socket, so that on the one hand the electrical connection between the external energy source 9 and the internal energy storage 2 is separated. On the other hand, there is the temperature control medium circuit 5 separated.

In 3 Finally, an operating situation is shown in which the motor vehicle 3 from the stationary part of the charging arrangement 1 is separated. The temperature control medium was evident from the motor vehicle section 6th of the temperature control medium circuit 5 removed so that the total mass of the motor vehicle 3 is reduced accordingly. Of course, it is also possible not to remove all of the temperature control medium or all of the temperature control medium from the motor vehicle section at once 6th to drain. It is also possible to have a residual amount of temperature control medium in the motor vehicle section 6th to leave, for example to regulate the temperature of the energy store 2 support in operation. It is also possible by means of the valve 12th emptying the temperature control medium while driving, for example if the temperature control medium has exceeded a certain temperature. If the temperature control medium is cooling water, this can be released into the environment without any problems.

Furthermore, by means of the charging arrangement 1 to recharge the energy storage device 2 or when the connection is re-established between the stationary part of the charging arrangement 1 and the motor vehicle-side part of the loading arrangement 1 temperature control medium again in the temperature control medium circuit 5 , especially the motor vehicle section 6th of the temperature control medium circuit 5 to be filled. Ultimately, the in 3 The operating state shown is again that operating state that is shown in 1 is shown. In normal driving operation, passive cooling, ie in particular air cooling or external air flow or a dissipation of the heat via the structure of the motor vehicle, can be used 3 , a sufficient cooling effect can be achieved to heat the energy store 2 to cool during driving.

List of reference symbols

1

Loading arrangement

2

Energy storage

3

Motor vehicle

4th

Temperature control device

5

Temperature control medium circuit

6th

Motor vehicle section

7th

Stationary section

8th

Energy storage section

9

external energy source

10

Connection device

11

Conveyor

12th

Valve

Claims (10)

Charging arrangement (1) for charging an energy store (2) of a motor vehicle (3), comprising a temperature control device (4) which has a temperature control medium circuit (5) which is arranged at least in sections in the motor vehicle (3) and through which at least one temperature control medium flows or can flow , wherein the temperature control device (4) has a connection device (10) by means of which a motor vehicle section (6) of the temperature control medium circuit (5) arranged in the motor vehicle (3) can be separated or connected to a stationary section (7) of the temperature control medium circuit (5), characterized by a conveying device (11) which is designed to empty the temperature control means arranged in the motor vehicle section (6), in particular as a function of a vehicle state. Loading arrangement (1) according to Claim 1 , characterized in that the connection device (10) has a socket and a plug which can be separated from one another to separate the temperature control medium circuit (5) or can be connected to one another to connect the temperature control medium circuit (5). Loading arrangement (1) according to Claim 2 , characterized in that the socket and the plug have at least one connection, in particular an inlet and an outlet, for temperature control means. Loading arrangement (1) according to one of the preceding claims, characterized in that the conveying device (11) is assigned a valve, in particular a valve (12) arranged in the motor vehicle section (6), through which valve (12) in the motor vehicle section (6) absorbed temperature control medium, in particular into the environment, can be emptied. Loading arrangement (1) according to one of the preceding claims, characterized in that the conveying device (11) has at least one pressure generating device which is designed to convey temperature control medium received in the motor vehicle section (6) by generating a defined pressure from the motor vehicle section (6) . Loading arrangement (1) according to Claim 5 , characterized in that the conveying device (11) is designed to empty the temperature control medium before the connection device (10) is disconnected, in particular by the connection device (10). Charging arrangement (1) according to one of the preceding claims, characterized in that the motor vehicle section (6) has at least one energy storage section (8) which is in thermal contact with at least one energy storage (2) of the motor vehicle (3) and for temperature control of the at least one Energy store (2) is formed. Charging arrangement (1) according to one of the preceding claims, characterized in that the conveying device (11) is designed to, as a function of a vehicle state, in particular as a function of a charge state of the energy store (2) and / or at least one temperature of at least one component of the motor vehicle ( 3) to at least partially empty the temperature control medium circuit (5), in particular the motor vehicle section (6). Motor vehicle (3), comprising a motor vehicle section (6) of a temperature control medium circuit (5) of a temperature control device (4) through which at least one temperature control medium flows or can be flowed through, the temperature control device (4) having a connection device (10) by means of which the in the Motor vehicle (3) arranged motor vehicle section (6) of the temperature control medium circuit (5) is separably connectable or connected to a stationary section (7) of the temperature control medium circuit (5), characterized by a conveying device (11) which is designed to in the motor vehicle section (6) arranged temperature control, in particular depending on a vehicle condition, to empty. A method for operating a charging arrangement (1) for charging an energy store (2) of a motor vehicle (3), comprising a temperature control device (4) which has a temperature control medium circuit (5) which is arranged at least in sections in the motor vehicle (3) and which is controlled by at least one temperature control medium The temperature control device (4) has a connection device (10) by means of which a motor vehicle section (6) of the temperature control medium circuit (5) arranged in the motor vehicle (3) can be connected to a stationary section (7) of the temperature control medium circuit (5) in a separable manner or is connected, characterized in that the temperature control means arranged in the motor vehicle section (6) is emptied, in particular as a function of a vehicle state.

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