Temperature control system for a motor vehicle, in particular for a motor car, as well as a motor vehicle with such a temperature control system

Abstract

Temperature control system (1) for a motor vehicle, comprising at least one circuit (2) through which a temperature control medium flows, an electrical energy storage device (3) which has storage cells (6) designed for storing electrical energy, which are to be temperature controlled by means of the temperature control medium flowing through the circuit (2), and a heat exchanger (9) arranged in the circuit (2), through which heat can be transferred between the temperature control medium flowing through the circuit (2) and another fluid, wherein: - the cycle (2) exhibits: ◯ a supply line (19) through which the storage cells (6) can be supplied with the temperature control medium in order to temperature control the storage cells (6) by means of the temperature control medium, ◯ a return line (20) through which the temperature control fluid supplied to the storage cells (6) via the supply line (19) can be discharged from the storage cells (6), ◯ a bypass line (21) arranged upstream of the return line (20) and connected in series to the return line (20), via which the supply line (19) and the storage cells (6) are bypassed by the temperature control medium and the temperature control medium bypassing the supply line (19) and the storage cells (6) can be introduced into the return line (20), ◯ a supply line (24) common to the supply line (19) and the bypass line (21), and ◯ a valve assembly (25) which is switchable between: ▪ a first switching state in which the supply line (24) is fluidically connected to the supply line (19) via the valve device (25), whereby the supply line (19) can be supplied with the temperature control fluid from the supply line (24) via the valve device (25), and the storage cells (6) can be supplied via the storage cells (6), and the return line (20) can be supplied via the storage cells (6). ▪ a second switching state in which the supply line (24) is fluidically connected to the bypass line (21) via the valve device (25), whereby the bypass line (21) and the return line (20) can be supplied with the temperature control fluid from the supply line (24) via the valve device (25) and via the bypass line (21) the return line (20) bypassing the storage cells (6), and - in the circuit (2) downstream of the return line (20) at least one further component (27) is arranged, which can be supplied with the temperature control medium via the return line (20) in both the first switching state and the second switching state and can thus be temperature controlled by means of the temperature control medium, characterized in that: - the electrical energy storage device (3) has a first input (E1) through which the temperature control fluid flowing through the supply line (19) in the first switching state can be introduced into the electrical energy storage device (3) and thereby supplied to the storage cells (6), - the first inlet (E1) in the installation position of the temperature control system (1) points forward in the longitudinal direction (28) of the vehicle, - the electrical energy storage device (3) has a second input (E2) through which the temperature control fluid flowing through the bypass line (21) in the second switching state can be introduced into the electrical energy storage device (3), - the second inlet (E2) in the installation position of the temperature control system (1) points forward in the longitudinal direction (28) of the vehicle, - the electrical energy storage device (3) has an output (A1) through which the temperature control fluid flowing through the return line (20) in the first switching state and in the second switching state can be discharged from the electrical energy storage device (3) and supplied to the further component (27), and - the outlet (A1) in the installation position of the temperature control system (1) points to the rear in the longitudinal direction (28) of the vehicle.

Description

[0001] The invention relates to a temperature control system for a motor vehicle, in particular for a motor car, according to the preamble of claim 1. Furthermore, the invention relates to a motor vehicle with such a temperature control system.

[0002] DE 10 2017 220 376 A1 discloses a cooling system for a motor vehicle, including an electrical energy storage device for powering the vehicle. DE 10 2019 132 688 A1 further discloses a thermal management system for a motor vehicle. DE 10 2016 003 076 A1 also discloses a temperature control system for a hybrid drive system. US 2017 / 0271727 A1 discloses a power supply system for a vehicle. Finally, DE 102 20 775 A1 discloses an arrangement for improving the charging capacity of a motor vehicle battery.

[0003] The object of the present invention is to create a temperature control system for a motor vehicle and a motor vehicle with such a temperature control system, so that a particularly advantageous temperature control, i.e. cooling and / or heating, can be achieved in a particularly cost-effective, weight-efficient and space-saving manner.

[0004] This problem is solved according to the invention by a temperature control system with the features of claim 1, and by a motor vehicle with the features of claim 8. Advantageous embodiments of the invention are the subject of the dependent claims.

[0005] A first aspect of the invention relates to a temperature control system, also referred to as a temperature control device or temperature control unit, which is designed as a device or unit. The temperature control system is a cooling and / or heating system by means of which components can be temperature controlled, i.e., cooled and / or heated. In other words, the temperature control system can be operated as a cooling system or cooling unit to cool at least one of the components. Alternatively or additionally, the temperature control system can be operated as a heating system to heat the at least one component and / or at least one other component. The motor vehicle, in its fully manufactured state, includes the temperature control system. Preferably, the motor vehicle is designed as a motor vehicle, in particular as a passenger car.

[0006] The temperature control system comprises at least one circuit through which a preferably liquid temperature control medium flows, which is also referred to as the first circuit or first circuit. Preferably, the temperature control medium is liquid. For example, the temperature control medium can comprise at least water. Furthermore, the temperature control system comprises an electrical energy storage device, particularly located in the first circuit, which includes storage cells, also simply referred to as cells, by means of which electrical energy, in particular electrochemically, is to be stored or stored. Thus, the storage cells are designed for storing, in particular electrochemically storing, electrical energy. The storage cells are to be temperature controlled, i.e., cooled and / or heated, by means of the temperature control medium flowing through the first circuit.This means that the storage cells can be temperature-controlled, i.e., cooled and / or heated, by means of the temperature control fluid flowing through the first circuit. Thus, at least the storage cells are located in the first circuit. For example, if the temperature control fluid has a higher temperature than the storage cells, it acts as a heating medium, heating the storage cells, specifically by transferring heat from the temperature control fluid flowing through the first circuit to the storage cells. Conversely, if the temperature control fluid has a lower temperature than the storage cells, it acts as a coolant, cooling the storage cells, and heat is transferred from the storage cells to the temperature control fluid flowing through the first circuit.

[0007] The temperature control system further comprises a heat exchanger located in the first circuit, which is also referred to as the first heat exchanger, heat transfer medium, or primary heat exchanger. Specifically, the first heat exchanger is permeable to the temperature control fluid flowing through the first circuit. Heat can be transferred, i.e., exchanged, between the temperature control fluid flowing through the first circuit and another fluid via the first heat exchanger. For example, the first heat exchanger may be located both in the first heat circuit and in a circuit permeable to the other fluid.

[0008] Thus, for example, the first heat exchanger is permeable to both the temperature control fluid and the other fluid. Specifically, the other fluid flows through the first heat exchanger in a liquid state. Heat can be transferred via the heat exchanger from the other fluid flowing through the first heat exchanger to the temperature control fluid flowing through the first heat exchanger, and / or heat can be transferred via the first heat exchanger from the temperature control fluid flowing through the first heat exchanger to the other fluid flowing through the first heat exchanger. For example, the first heat exchanger is a cooling device, also known as a chiller, by means of which the temperature control fluid is to be cooled, in particular in such a way that heat can be transferred from the temperature control fluid to the other fluid via the heat exchanger.

[0009] For example, the additional fluid could be a refrigerant. It is conceivable that this additional fluid and the additional circuit are components of an air conditioning system for a motor vehicle, designed, for example, as a compression refrigeration unit or at least capable of being operated as such, and that the additional fluid and the additional circuit could be part of the temperature control system. In particular, the first heat exchanger could be an evaporator or capable of being operated as an evaporator, by means of which the additional fluid is to be evaporated.This allows the temperature control fluid flowing through the first circuit to be cooled particularly effectively and efficiently by means of the first heat exchanger or via the first heat exchanger by means of the further fluid, especially to a temperature which is lower than the temperature prevailing in the environment of the temperature control system, also referred to as ambient temperature.

[0010] In order to achieve particularly advantageous temperature control, i.e., cooling and / or heating, in a cost-effective, lightweight, and space-saving manner, the invention provides that the circuit includes a supply line through which the storage cells can be supplied with the temperature control medium to regulate the temperature of the storage cells, i.e., to cool and / or heat them. The temperature control medium of the storage cells is understood to mean, in particular, the following: For example, a temperature control element is assigned to each storage cell, which may, for example, have exactly one or more temperature control elements. In particular, the temperature control element has at least one temperature control element per storage cell through which the temperature control medium can flow.For example, the temperature control element and / or the temperature control part is a temperature control plate, also referred to as a plate, through which the temperature control element is permeable by the temperature control fluid flowing through the first circuit. The temperature control element is, for example, fluidically connected to the supply line, so that the temperature control element can be supplied with the temperature control fluid via the supply line. In particular, the temperature control element is permeable by the temperature control fluid. Heat can be exchanged between the storage cells and the temperature control fluid flowing through the temperature control element. For example, especially if the temperature control fluid has a higher temperature than the storage cells, heat can be transferred from the temperature control fluid to the storage cells via the temperature control element, thereby heating the storage cells.Furthermore, particularly when the temperature control fluid has a lower temperature than the storage cells, heat can be transferred from the storage cells to the temperature control fluid via the temperature control element, thereby cooling the storage cells. Thus, supplying the storage cells with the temperature control fluid means, in particular, that the temperature control element can be supplied with the temperature control fluid in order to regulate the temperature of the storage cells. In this respect, the temperature control element can be supplied with the temperature control fluid via the supply line in order to regulate the temperature of the storage cells, specifically via the temperature control element. The temperature control element is, for example, fluidically connected to the supply line.

[0011] The (first) circuit also includes a return line through which the temperature control fluid supplied to the storage cells or the temperature control element via the supply line can be discharged from the storage cells or the temperature control element. Thus, for example, the temperature control element is fluidically connected to the return line. With respect to the temperature control fluid flowing through the supply line, the storage cells or the temperature control element, and the return line, the supply line is arranged upstream of the storage cells or upstream of the temperature control element, the storage cells or the temperature control element are arranged upstream of the return line, the return line is arranged downstream of the storage cells or the temperature control element, and the storage cells or the temperature control element are arranged downstream of the supply line.Thus, with regard to the temperature control fluid flowing through the supply line, the storage cells or the temperature control element, and the return line, the supply line, the storage cells or the temperature control element, and the return line are arranged, connected, or interconnected in series, particularly from a fluid dynamics perspective. The return line can therefore be supplied with the temperature control fluid from the supply line, specifically via the storage cells or the temperature control element.

[0012] The circuit (first circuit) also includes a bypass circuit, which is connected, arranged, or linked in series with the return circuit, particularly from a fluid dynamics perspective. This bypass circuit is located upstream of the return circuit with respect to the temperature control fluid flowing through the bypass circuit and subsequently through the return circuit. Specifically, the bypass circuit is fluidically connected to the return circuit. The bypass circuit allows the temperature control fluid to bypass the supply circuit and, in particular, the storage cells or the temperature control element. This means that the temperature control fluid flowing through the bypass circuit bypasses the supply circuit and the storage cells or the temperature control element, and therefore does not flow through the supply circuit or through the storage cells or the temperature control element.Furthermore, the bypass line allows the temperature control fluid flowing through it, thus bypassing the supply line and the storage cells or temperature control element, to be introduced into the return line. This means, in particular, that the return line can be supplied with the temperature control fluid flowing through the bypass line, or that the temperature control fluid flowing through the bypass line can be introduced into the return line. This means, in particular, that the return line is a common line shared by the bypass line and the storage cells or temperature control element, and thus by the bypass line and the supply line, since both the storage cells or temperature control element and the bypass line flow into the return line.In other words, the temperature control fluid flowing through the storage cells or the temperature control element, and thus tempering them, flows into the return line and is carried away from the storage cells or the temperature control element via the return line. Conversely, the temperature control fluid flowing through the bypass line, and thus bypassing the storage cells or the temperature control element, flows into the return line and is carried away from the bypass line via the return line. For example, if the return line and the bypass line are connected in series with respect to the temperature control fluid flowing through the bypass line and thus the return line, the bypass line and the return line form a single, combined line, with the bypass line being the first part of the combined line and the return line being the second part of the combined line, located downstream of the first part.Furthermore, for example, the supply line and the storage cells or the temperature control element as well as the return line form a second overall line, which, for example, leads into the return line.

[0013] The first circuit also has a supply line common to the supply line and the bypass line, i.e., a single supply line for all circuits. This supply line provides the bypass line, and via the bypass line the return line, as well as the supply line and via the bypass line the storage cells or the temperature control element. The return line is then supplied with the temperature control fluid, particularly from the heat exchanger, via the storage cells or the temperature control element. For example, the supply line can be arranged downstream of the heat exchanger in the direction of flow of the temperature control fluid flowing through the first circuit.

[0014] Furthermore, the first circuit features a valve assembly, also referred to as the first valve assembly, switching valve, or first switching valve. This valve assembly can be switched between a first and a second switching state. Specifically, the valve assembly can be switched electrically between the first and second switching states or can assume an intermediate position. This allows for the advantageous reduction of cooling or heating power for cooling or heating, i.e., for temperature control of the energy storage system, particularly when only a partial volume flow of the temperature control fluid is directed through the storage cells compared to the respective switching state.

[0015] In the first switching state, the supply line, which is arranged particularly upstream of the valve device, is fluidically connected to the supply line via the valve device, whereby the supply line can be supplied with the temperature control medium from the supply line via the valve device, and the storage cells or the temperature control element can be supplied via the supply line, and the return line can be supplied via the storage cells or the temperature control element.If the temperature control fluid flows through the first circuit while the valve assembly is in the first switching state, the supply line, the valve assembly, the supply line, the storage cells or the temperature control element, and the return line are connected or arranged in series, particularly in terms of flow characteristics, such that the supply line is located upstream of the valve assembly, the valve assembly is located upstream of the supply line, the supply line is located upstream of the storage cells or the temperature control element, and the storage cells or the temperature control element is located upstream of the return line. Preferably, in the first switching state, the temperature control fluid does not bypass the storage cells via the bypass line.In other words, preferably in the first switching state, the valve device prevents the temperature control fluid from bypassing the storage cells or the temperature control element via the bypass line. It can be provided in the first switching state that the flow of the temperature control fluid through the bypass line is prevented. In particular, it is conceivable that the valve device prevents the flow of the temperature control fluid in or through the bypass line. The temperature control fluid exits the energy storage device 3, particularly always, and especially in the first and second switching states, in the direction of the other component.

[0016] In the second switching state, the supply line is fluidically connected to the bypass line via the valve device, whereby the bypass line and the return line can be supplied with the temperature control fluid from the supply line via the valve device and the storage cells via the bypass line.This means that when the temperature control fluid flows through the first circuit while the valve assembly is in the second switching state, the temperature control fluid flows through the supply line, then the valve assembly, then the bypass line, and then the return line, so that in the second switching state, and especially when the temperature control fluid flows through the first circuit while the valve assembly is in the second switching state, the supply line is located upstream of the valve assembly, the valve assembly is located upstream of the bypass line, and the bypass line is located upstream of the return line.In the second switching state, it is preferably provided that the flow of the temperature control fluid from the supply line via the valve assembly through the storage cells or the temperature control element is prevented, so that, for example, in the second switching state, temperature control of the storage cells by the temperature control fluid is prevented. In particular, it is provided in the second switching state that such a flow of the temperature control fluid from the supply line via the valve assembly into and through the return line is prevented in such a way that the storage cells or the temperature control element are arranged upstream of the return line.

[0017] It can be seen that by switching or changing the valve device between the switching states, the temperature control fluid flowing through the supply line can be selectively introduced either directly from the valve device into the supply line and thus to the storage cells or the temperature control element, or directly from the valve device into the bypass line.

[0018] To introduce the temperature control fluid from the supply line directly into the flow line, the first switching state is set, thus tempering the storage cells. To introduce the temperature control fluid from the supply line directly into the bypass line, the valve is switched to the second switching state. In this state, the temperature control fluid bypasses the storage cells and the temperature control element, and the storage cells are not tempered by the temperature control fluid from the supply line.

[0019] Furthermore, the temperature control system includes at least one additional component, separate from a valve and a pump, in addition to the storage cells, the valve assembly, and the heat exchanger. This component is located in the first circuit downstream of the return line and can therefore be supplied with the temperature control fluid via the return line in both the first and second switching states. This allows the temperature control fluid to be drawn from the return line and thus controlled by this fluid. This design provides a simple and therefore lightweight, cost-effective, and space-saving configuration, particularly with regard to fluid flow. As a result, the storage cells can be temperature-controlled as needed or bypassed by the temperature control fluid, while the additional component can be advantageously controlled.The invention is based in particular on the following findings and considerations: In a motor vehicle, for example a hybrid or electric vehicle, there are usually several circuits, which can be operated autonomously or independently of one another and which, for example, function or may be configured as cooling circuits. In particular, the cooling circuits operate at different temperature levels. One of the cooling circuits is, for example, designed as a high-temperature cooling circuit, by means of which electric motors are typically cooled for, in particular, purely electric propulsion of the motor vehicles. The high-temperature cooling circuit operates, for example, at a first temperature level, which is, for example, in the range of 60 degrees Celsius to 80 degrees Celsius.This means that the medium flowing through a high-temperature cooling circuit has the first temperature level, particularly during normal operation of the high-temperature cooling circuit. A second cooling circuit is designed as a low-temperature circuit, operating, for example, at a lower temperature level than the first. This second temperature level is, for instance, in the range of 20 to 40 degrees Celsius. This means that the aforementioned medium, or another medium flowing through the high-temperature circuit, has the second temperature level and thus flows through the high-temperature circuit at this lower temperature level. For example, an electrical energy storage device, such as the one mentioned earlier, is cooled by means of the low-temperature circuit.In particular, it is possible to cool the medium flowing through the low-temperature cooling circuit below ambient temperature using a cooling device. For example, the additional component can be arranged upstream of the heat exchanger.

[0020] If, for example, one or more additional components are to be integrated into one of the cooling circuits, such as the low-temperature cooling circuit, this additional component typically needs to be connected to the corresponding cooling circuit via additional lines for conveying the cooling medium. If, for example, the additional component is located in the underfloor or rear section of the vehicle, an undesirably large number of additional lines may be required. The underfloor is understood to be, for example, an area located vertically below the floor of a vehicle body, such as a unibody construction, whose interior, also known as the passenger compartment, is defined by the body structure, particularly in such a way that the floor forms the lower boundary of the interior vertically.The typically required, undesirably high number of additional lines can result in the following disadvantages: - high costs - high weight - high space requirements - additional hydraulic pressure losses - Pump operation is less efficient, or a larger pump may be required to meet flow rate requirements. - Thermal losses via the surfaces of the pipes both in summer, especially during cooling operation, and in winter, during heating operation.

[0021] The aforementioned disadvantages can now be avoided by the invention. The invention allows the additional component to be connected to the first circuit in a particularly cost-effective, lightweight, and space-saving manner, thus enabling it to be integrated into the first circuit and supplied with the temperature control fluid for temperature control, i.e., for cooling and / or heating the additional component. Since the additional component can be supplied with the temperature control fluid via the return line, the return line serves multiple functions. Firstly, the return line is used to discharge the temperature control fluid from the storage cells or the temperature control element, particularly after it has temperature-controlled the storage cells. Secondly, the return line is used to discharge the temperature control fluid from the bypass line, particularly after it has flowed through the bypass line and thus bypassed the storage cells or the temperature control element.Furthermore, according to the invention, the return line is used to supply the other component with the temperature control fluid. This allows for a particularly simple and therefore cost-effective, lightweight, and space-saving design for the routing of the temperature control fluid, especially for supplying the storage cells, the bypass line, and the other component. In particular, the number of underfloor lines—that is, the number of lines arranged in the aforementioned underfloor and through which the temperature control fluid flows—can be kept to a minimum, especially to the point where the number can be reduced or limited to one.

[0022] The electrical energy storage device has a first inlet through which the temperature control fluid, flowing through the supply line in the first switching state, can be introduced into the electrical energy storage device and thus supplied to the storage cells or the temperature control element. This allows for a particularly simple, cost-effective, lightweight, and space-saving routing of the temperature control fluid.

[0023] The first inlet, when the temperature control system is installed, points forward in the longitudinal direction of the vehicle. Therefore, the first inlet is located on the front of the energy storage device, specifically its housing, which faces forward in the longitudinal direction of the vehicle. This ensures a particularly simple and thus cost-effective, space-saving, and weight-efficient routing of the temperature control fluid. The electrical energy storage device can have the aforementioned housing, which is also referred to as the storage housing. The storage cells are housed within this housing. It is particularly conceivable that the valve assembly is also located within the housing.

[0024] Preferably, the electrical energy storage device is a high-voltage component whose electrical voltage, in particular its operating or nominal voltage, is preferably greater than 50 volts, particularly greater than 60 volts, and most preferably several hundred volts. In particular, the electrical energy storage device can be a battery, especially a high-voltage battery (HV battery). For example, the motor vehicle is designed as a hybrid or electric vehicle. Thus, the motor vehicle comprises, for example, at least one electric machine by means of which the motor vehicle can be driven, in particular purely. The electric machine is preferably a high-voltage component whose electrical voltage, in particular its operating or nominal voltage, is preferably greater than 50 volts, particularly greater than 60 volts, and most preferably several hundred volts.In order to drive the motor vehicle by means of the electric machine, especially in pure mode, the electric machine is supplied with the electrical energy stored by means of the storage cells.

[0025] For example, the housing of the energy storage device has the first inlet, so that, for example, the temperature control fluid flowing through the supply line in the first switching state can be introduced into the housing via the first inlet and thus supplied to the storage cells or the temperature control element.

[0026] The electrical energy storage device, in particular its housing, has a second inlet, provided in addition to and / or spaced apart from the first inlet, through which the temperature control fluid, flowing through the bypass circuit in the second switching state, can be introduced into the electrical energy storage device, in particular into the housing. This allows for a particularly simple and therefore cost-effective, space-saving, and weight-efficient routing of the temperature control fluid.

[0027] The second inlet, when the temperature control system is installed in its longitudinal position, points forward in the vehicle's longitudinal direction; therefore, the second inlet is located on the front side of the electrical energy storage device, particularly its housing, which faces forward in the vehicle's longitudinal direction. This allows the additional component to be integrated into the circuit particularly easily, supplied with the temperature control fluid, and thus temperature-controlled.

[0028] To achieve a particularly simple and therefore cost-effective routing of the temperature control fluid, the electrical energy storage device, especially its housing, is provided with an outlet through which the temperature control fluid flowing through the return line in the first and second switching states can be discharged from the electrical energy storage device, specifically from the housing. For example, it is provided that at least a portion of the return line is located or runs within the housing.

[0029] In its installed position, the temperature control system's outlet points rearward in the longitudinal direction of the vehicle; thus, the outlet is located on the rear side of the electrical energy storage device, particularly the housing, which faces rearward in the longitudinal direction of the vehicle and away from the front. This allows for a particularly space-saving arrangement of the component, enabling its integration into the first circuit in a space-saving, cost-effective, and weight-efficient manner.

[0030] To achieve particularly effective and efficient temperature control in a space-saving, weight-efficient, and cost-effective manner, a further embodiment of the invention provides that the temperature control system has a second circuit through which the temperature control medium flows, in which at least one heat source is arranged that can be temperature-controlled, i.e., cooled and / or heated, by means of the temperature control medium flowing through the second circuit. In particular, the heat source is provided in addition to the energy storage device and is arranged, for example, outside the energy storage device, especially the housing. The heat source, also referred to as a further heat source, can, for example, be a drive motor for propelling the motor vehicle. For example, the drive motor is the aforementioned electric machine. For example, the heat source can be or include at least one electronic component.Furthermore, it is conceivable that the heat source is an electric heater. Additionally, a cooler is provided in the second circuit, separate from the heat exchanger, to cool the temperature control fluid flowing through the second circuit. Most preferably, the heat source is a device provided in addition to the other component and, in particular, spaced apart from the other component, which is especially an external device with respect to the other component.

[0031] For example, the heat source can be cooled by means of the temperature control fluid flowing through the second circuit, whereby heat is transferred from the heat source to the temperature control fluid flowing through the second circuit. The temperature control fluid flowing through the second circuit can be cooled by means of the cooler, in particular such that heat is transferred from the temperature control fluid flowing through the cooler, via the cooler, to a medium that flows around and / or through the cooler. Most preferably, the cooler is an ambient air cooler, which, when the vehicle is in motion, especially when moving forward, is exposed to air, particularly ambient air. Thus, the aforementioned medium is, for example, air, particularly ambient air.

[0032] It has proven particularly advantageous if the first circuit is a low-temperature circuit (LT circuit), so that, especially during normal operation of the temperature control system, the temperature control fluid flows through the first circuit at a first temperature, i.e., at a first temperature level. Thus, for example, during normal operation of the temperature control system, the first circuit operates at the first temperature level. The second circuit, for example, is designed as a high-temperature circuit (HT circuit), so that, especially during normal operation, the temperature control fluid flows through the second circuit at a second temperature higher than the first, i.e., at a second temperature level higher than the first.Thus, during normal operation of the temperature control system, for example, the second circuit operates at a higher temperature level than the first. For example, the second temperature level is at least 20 degrees Celsius higher than the first temperature level.

[0033] In order to achieve particularly advantageous temperature control in a cost-effective, space-saving and weight-efficient manner, a further embodiment of the invention provides that the electrical energy storage device, the additional component and the heat exchanger are arranged downstream of the heat source and upstream of the cooler in the second circuit and thus in series with the heat source, so that, for example, the first circuit is fluidically connected or connectable to the second circuit.

[0034] In order to achieve particularly simple and demand-oriented temperature control, a further embodiment of the invention provides that the temperature control system has a second valve assembly, which is provided in addition to the first valve assembly and / or is spaced apart from the first valve assembly. The second valve assembly is switchable between a third switching state and a fourth switching state, in particular electrically.In the third switching state, the first circuit, in particular a circuit inlet of the first circuit, is fluidically connected to the second circuit by means of the second valve device, i.e. via the second valve device, such that, in particular when the temperature control medium flows through the circuits, the electrical energy storage device, the further component and the heat exchanger are arranged downstream of the heat source and upstream of the cooler in the second circuit and thus in series with the heat source, so that, in particular in the third switching state, the first circuit is fluidically connected to the second circuit via the second valve device.

[0035] In the fourth switching state, the first circuit, in particular the circuit inlet of the first circuit, is separated from the second circuit by means of the valve device at least in such a way that at least a predominant part of the temperature control fluid flowing through the second circuit bypasses the first circuit on its way from the heat source to the cooler, and thus does not flow through the first circuit.

[0036] In a further embodiment of the invention, the electrical energy storage device has a housing in which the storage cells are housed.

[0037] In order to integrate the additional component into the first circuit in a particularly cost-effective manner, a further embodiment of the invention provides that the additional component is arranged outside the housing.

[0038] Finally, it has proven particularly advantageous if the additional component is an electronic component, i.e., an electronic device, wherein the component, in particular the electronic component, is preferably a power electronics unit through which the electrical energy stored in the storage cells, and thus in the energy storage system, can be made available. Furthermore, it is conceivable that, for example, electrical energy supplied by an energy source such as an electric machine can be fed to the storage cells via the power electronics unit and thus stored in the storage cells. It is also conceivable that the additional component is an electric heating element, in particular for heating the storage cells or the passenger compartment by means of a heat pump or in heat pump operation. This allows for particularly advantageous temperature control.

[0039] A second aspect of the invention relates to a motor vehicle, preferably a motor car, in particular a passenger car, which has a temperature control system according to the first aspect of the invention. Advantages and advantageous embodiments of the first aspect of the invention are to be regarded as advantages and advantageous embodiments of the second aspect of the invention and vice versa.

[0040] Further details of the invention will become apparent from the following description of preferred embodiments with the accompanying drawings. These show: Fig. 1 a schematic representation of a first embodiment of a temperature control system for a motor vehicle, in particular for a motor car; Fig. 2. Partially a schematic, enlarged representation of the first embodiment of the temperature control system; Fig. 3 a schematic representation of a second embodiment of the temperature control system; Fig. 4 a schematic representation of a third embodiment of the temperature control system; and Fig. 5 a schematic representation of a fourth embodiment of the temperature control system.

[0041] In the figures, identical or functionally equivalent elements are provided with the same reference symbols.

[0042] Fig. Figure 1 shows a schematic representation of a temperature control system 1 for a motor vehicle, in particular for a motor vehicle preferably designed as a passenger car. This means that the motor vehicle, in its fully manufactured state, has the temperature control system 1. The temperature control system 1 is a device or assembly that is designed or operable as a cooling and / or heating device. This will be explained in more detail below. The temperature control system 1 has a first circuit through which a temperature control medium flows. The temperature control medium is preferably a liquid, which may contain at least water. Furthermore, the temperature control system 1 includes an electrical energy storage device 3, which is designed as a high-voltage component and is therefore also referred to as a high-voltage storage device (HVS).The energy storage device 3 has a housing 4, also referred to as a storage housing, which directly defines a receiving space 5. Furthermore, the energy storage device 3 has storage cells, also referred to simply as cells, which are located in . Fig. Figure 2 shows a particularly schematic representation of the storage cells, which are labelled 6. Electrical energy, particularly electrochemically, is stored or stored in the storage cells 6, such that the electrical energy, particularly electrochemically, is stored or stored in the energy storage device 3. It is evident that the storage cells 6 are arranged, and thus accommodated, in the receiving space 5 and therefore in the housing 4 of the energy storage device 3. A temperature control element 7, which is accommodated in the housing 4, is associated with the storage cells 6. Fig. 1 and Fig. Figure 2 shows a first embodiment of the temperature control system 1, wherein the temperature control element 7 comprises, for example, several separately configured temperature control parts 8. The temperature control parts 8, and thus the temperature control element 7, are permeable to the temperature control medium flowing through the first circuit 2, and, for example, each temperature control part 8 is configured as a plate, which is also referred to as a cooling plate. In particular, each temperature control part 8 can be configured as a cell cooler, since, at least in one operating state of the temperature control system 1, the storage cells 6 can be cooled by means of the temperature control element 7. Alternatively or additionally, the storage cells 6 can, for example, be heated by means of the temperature control element 7, particularly in a second operating state of the temperature control system 1.Heat can be transferred or exchanged between the storage cells 6 and the temperature control fluid flowing through the temperature control element 7. If the temperature control fluid flowing through the temperature control element 7 has a higher temperature than the storage cells 6, heat is transferred from the temperature control fluid flowing through the temperature control element 7 to the storage cells 6, thereby heating the storage cells 6. In this case, the temperature control fluid acts as a heating medium. If the temperature control fluid flowing through the temperature control element 7 has a lower temperature than the storage cells 6, heat can be transferred from the storage cells 6 to the temperature control fluid flowing through the temperature control element 7, thereby cooling the storage cells 6. In this case, the temperature control fluid acts as a coolant.In particular, it can be provided that each storage cell 6 is assigned at least or exactly one respective temperature control element 8, wherein the respective storage cell 6 to which the respective temperature control element 8 is assigned can be temperature-controlled by means of the respective temperature control element 8. In particular, the temperature control elements 8, especially in their entirety, form the temperature control element 7. Overall, it is evident that the storage cells 6 are to be temperature-controlled, i.e., cooled and / or heated, by means of the temperature control medium flowing through the first circuit 2.When it is described below that the temperature control medium can be supplied to or is supplied to the storage cells 6, or that the storage cells 6 can be supplied or are supplied with the temperature control medium, this means that the temperature control element 7, i.e., the temperature control parts 8, can be supplied or is supplied with the temperature control medium, or that the temperature control element 7 or the temperature control parts 8 can be supplied or are supplied with the temperature control medium. Similarly, when it is described below that the temperature control medium can be supplied or is supplied to the temperature control element 7, or that the temperature control element 7 can be supplied or is supplied with the temperature control medium, this means that the temperature control medium can be supplied or is supplied to the storage cells 6, or that the storage cells 6 can be supplied or are supplied with the temperature control medium.Therefore, it is particularly conceivable that the storage cells 6 and the temperature control element 7 are to be understood synonymously, since the temperature control element 7 and the storage cells 6 form, for example, a single unit or assembly, especially with regard to the temperature control of the storage cells 6.

[0043] The temperature control system 1 further comprises a heat exchanger, designated as chiller 9, which is arranged in the first circuit 2 and thus through which the temperature control fluid flowing through the first circuit 2 can flow. Heat can be transferred, i.e., exchanged, between the temperature control fluid flowing through the first circuit 2 and another fluid via the chiller 9. In particular, the chiller 9 is designed as a cooling device through which the temperature control fluid flowing through circuit 2 is cooled by means of the other fluid. Fig. Figure 1 shows that the temperature control system 1 has a further circuit in the form of a refrigeration circuit 10. The refrigeration circuit 10 is also referred to as a refrigerant circuit, refrigeration circuit, or refrigerant loop and is permeable to the further fluid. This further fluid is a refrigerant which, for example, undergoes several phase transitions on its way through the refrigeration circuit 10, in particular from liquid to gaseous and back again from gaseous to liquid.

[0044] A pump 11, which is electrically operated, is arranged in the refrigeration circuit 10. This pump circulates the refrigerant through the refrigeration circuit 10, making it possible for the refrigerant to be conveyed through it. It is evident that the chiller 9 is arranged in both circuit 2 and refrigeration circuit 10, allowing the chiller 9 to be exposed to both the temperature control fluid flowing through circuit 2 and the refrigerant flowing through refrigeration circuit 10. A condenser 12 for condensing the refrigerant is also arranged in refrigeration circuit 10. Refrigeration circuit 10 can be operated at least as a compression refrigeration machine. In other words, refrigeration circuit 10 is part of an air conditioning system that can be operated at least as a compression refrigeration machine and can, for example, supply the interior of a motor vehicle with cooled air.In the direction of flow of the refrigerant through the refrigeration circuit 10, the condenser 12 is arranged downstream of the pump 11, with the chiller 9 being arranged downstream of the condenser 12. An evaporator 13 is also arranged downstream of the condenser 12 in the refrigeration circuit 10, with the evaporator 13 and the chiller 9 being arranged or connected in parallel flow direction. A first expansion valve 14 is associated with the chiller 9, and a second expansion valve 15 is associated with the evaporator 13, with the expansion valve 14 being arranged in parallel flow direction to both the evaporator 13 and the expansion valve 15, and the expansion valve 15 being arranged in parallel flow direction to both the chiller 9 and the expansion valve 14. The refrigerant is evaporated by means of the evaporator 13. Furthermore, it is conceivable that the refrigerant is to be evaporated or is evaporated by means of the chiller 9.In particular, the evaporation of the refrigerant by means of the chiller 9 allows heat to be transferred very efficiently from the temperature control fluid to the refrigerant via the chiller 9, thus enabling particularly effective cooling of the temperature control fluid flowing through circuit 2 by means of or via the chiller 9. The pump 11 is located downstream of the evaporator 13 and downstream of the chiller 9.

[0045] An internal heat exchanger 16 is also arranged in the refrigeration circuit 10. A first section of the heat exchanger 16 is located upstream of the pump 11 and downstream of the chiller 9 or downstream of the evaporator 13, and a second section of the heat exchanger 16 is located downstream of the condenser 12 and upstream of the respective expansion valves 14 and 15, respectively, with the expansion valve 14 being located upstream of the chiller 9 and the expansion valve 15 being located upstream of the evaporator 13. The refrigerant flows through the sections of the heat exchanger 16, and heat can advantageously be transferred between the sections. Thus, for example, heat can be transferred or exchanged between a first flow of refrigerant flowing through the first section and a second flow of refrigerant flowing through the second section by means of the heat exchanger 16.Furthermore, an additional condenser 17, also referred to as a heat pump condenser, is arranged in the refrigeration circuit 10 and is used, for example, in heat pump operation of the refrigeration circuit or the air conditioning unit. In the first embodiment, a pump 18, preferably electrically operated, is provided in the circuit 2, and is preferably provided in addition to the pump 11. The temperature control fluid can be circulated through the circuit 2 by means of the pump 18. The pump 18 is arranged downstream of the chiller 9 and upstream of the energy storage unit 3, i.e., upstream of the storage cells 6 or the temperature control element 7. In heat pump operation, for example, heat is transferred via the chiller 9 into the refrigeration circuit, and the heat is released via the condenser 17 into the passenger compartment of the vehicle or transferred to air supplied to the passenger compartment.This allows the passenger compartment to be heated.

[0046] In order to achieve particularly advantageous temperature control in a cost-effective, space-saving, and weight-efficient manner, the first circuit 2 has a supply line 19 fluidically connected to the storage cells 6, i.e., fluidically connected to the temperature control element 7. The storage cells 6, and thus the temperature control element 7, can be supplied with the temperature control medium flowing through circuit 2 via this supply line. This allows the storage cells 6, particularly via the temperature control element 7, to be temperature-controlled, i.e., cooled or heated, by means of the temperature control medium flowing through circuit 2. The first circuit 2 also has a return line 20, which is particularly well suited to the storage cells 6 and the temperature control element 7, respectively. Fig. 2 is recognizable. The temperature control fluid supplied to the storage cells 6 or the temperature control element 7 via the supply line 19, particularly after it has temperature-controlled the storage cells 6, can be discharged from the storage cells 6, i.e., from the temperature control element 7, via the return line 20. This means, in particular, that the temperature control element 7 opens into the return line 20. If the temperature control fluid flowing through circuit 2 passes through the supply line 19 and then through the temperature control element 7, the temperature control fluid then flows into and through the return line 20 and is discharged from the temperature control element 7 by means of the return line 20.

[0047] The first circuit 2 also includes a bypass circuit 21, which is fluidically connected in series with the return circuit 20 and, in particular, fluidically connected to the return circuit 20. This bypass circuit 21 is located upstream of the return circuit 20 with respect to the temperature control fluid flowing through both the bypass circuit 21 and the return circuit 20, and is fluidically connected, connected, or linked in series with the return circuit 20. It can be seen that the return circuit 20 and the bypass circuit 21 form a first combined circuit 22, through which the temperature control fluid flowing through circuit 2 can flow. With respect to the temperature control fluid flowing through the combined circuit 22, the bypass circuit 21 is a first length section of the combined circuit 22, and the return circuit 20 is a second length section of the combined circuit 22.The second length section is arranged downstream of the first length section, and vice versa. The supply line 19, and consequently the storage cells 6 and the temperature control element 7, are bypassed by the temperature control fluid via the bypass line 21. This means that the temperature control fluid flowing through the bypass line 21, and thus through the entire line 22, bypasses the supply line 19 and the temperature control element 7, and therefore does not flow through the supply line 19 or the temperature control element 7. Consequently, the storage cells 6 are not temperature-controlled by the temperature control fluid flowing through the bypass line 21 and thus through the entire line 22. It can be seen that the bypass line 21 leads into the return line 20. The supply line 19 and the temperature control element 7, for example, form a second entire line 23, through which the temperature control fluid can flow.In this configuration, the bypass line 21 connects to the return line 20, and the complete line 23 connects to the return line 20. Thus, the complete line 23 and the bypass line 21 are, in effect, flow-wise connected in parallel, since the temperature control fluid flowing through the bypass line 21 bypasses the complete line 23. The temperature control fluid flowing through the bypass line 21, and thus bypassing the supply line 19 and the storage cells 6 or the temperature control element 7, can be introduced into the return line 20 via the bypass line 21.

[0048] Out of Fig. 1 and Fig. 2 it is evident that the first circuit 2 also has a supply line 24 common to the supply line 19 and the bypass line 21, and thus to the total lines 22 and 23, which is arranged upstream of the bypass line 21 and upstream of the supply line 19, and thus upstream of the total lines 22 and 23, in the direction of flow of the temperature control medium flowing through the circuit 2.

[0049] Furthermore, supply line 24 is located downstream of chiller 9 (heat exchanger). For example, pump 18 is located in supply line 24.

[0050] The temperature control system 1 further comprises a first valve assembly 25, which is arranged in the first circuit 2. For example, the valve assembly 25 is arranged downstream of the supply line 24 and upstream of the combined lines 22 and 23 in the flow direction of the temperature control fluid flowing through the first circuit 2. The valve assembly 25 is switchable, particularly electrically, between a first switching state and a state in Fig. 1 and Fig. 2 shown, second switching state. In the first switching state, the supply line 24 is fluidically connected to the supply line 19 via the valve assembly 25, whereby the supply line 19 can be supplied with the temperature control medium from the supply line 24 via the valve assembly 25, and the storage cells 6 or the temperature control element 7 can be supplied via the supply line 19, and the return line 20 can be supplied with the temperature control medium from the supply line 24 via the storage cells 6 or the temperature control element 7, such that in the flow direction of the temperature control medium flowing through the supply line 24, the valve assembly 25, the supply line 19 and the temperature control element 7 and the return line 20, the supply line 24 is arranged upstream of the valve assembly 25, the valve assembly 25 upstream of the supply line 19, the supply line 19 upstream of the temperature control element 7 and the temperature control element 7 upstream of the return line 20.In the first switching state, it is specifically designed that the valve assembly 25 prevents the temperature control fluid from the supply line 24 from bypassing the supply line 19 and the temperature control element 7 via the bypass line 21. In other words, the temperature control fluid flowing through the supply line 24 is directed by the valve assembly 25 directly into the supply line 19 after the valve assembly 25 and not into the bypass line 21.

[0051] In the second switching state, the supply line 24 is fluidically connected to the bypass line 21 via the valve assembly 25. This allows the bypass line 21, and the return line 20, to be supplied with the temperature control fluid from the supply line 24 via the valve assembly 25, bypassing the storage cells 6 and the temperature control element 7, respectively. Specifically, this means that in the second switching state, the temperature control fluid from the supply line 24 is directed directly into the bypass line 21 after the valve assembly 25, and not into the supply line 19. Therefore, the entire temperature control fluid from the supply line 24 bypasses the supply line 19 and the temperature control element 7 via the bypass line 21 and thus does not flow through the temperature control element 7.Thus, it is preferably provided that in the second switching state, the temperature control fluid flowing through circuit 2 prevents the storage cells 6 from being heated. However, it is evident that in both the first and second switching states, the return line 20 is supplied with the temperature control fluid from the supply line 24.

[0052] In the first circuit 2 downstream of the return line 20 and upstream of the chiller 9, an additional component 27 is arranged, in addition to the energy storage 3, the chiller 9, the pump 18 and the valve assembly 25, which can be supplied with the temperature control fluid from the return line 20 and thus from the supply line 24 in both the first switching state and the second switching state, and is thereby temperature controlled by means of the temperature control fluid, in particular from the supply line 24.

[0053] At the in Fig. 1 and Fig. In the first embodiment shown in Figure 2, component 27 is arranged outside the housing 4. Furthermore, it is made of Fig. 2 It is particularly evident that the supply line 19 runs at least partially inside the housing 4, and the return line 20 runs at least partially inside the housing 4.

[0054] In principle, it would also be conceivable to integrate the valve assembly 25, also referred to simply as a valve, into the housing 4, also referred to as the HV storage housing, or to arrange it within the housing 4. Then only one inlet or inlet for the temperature control fluid into the housing 4 would be required.

[0055] In the first embodiment, the energy storage device 3, in particular the housing 4, has a first inlet E1 through which the temperature control fluid flowing through the supply line 19 in the first switching state can be introduced into the electrical energy storage device 3, in particular into the housing 4, and thereby supplied to the storage cells 6, i.e., the temperature control element 7. Furthermore, the electrical energy storage device 3, in particular the housing 4, has a second inlet E2, provided in addition to and spaced apart from the first inlet E1, through which the temperature control fluid flowing through the bypass line 21 in the second switching state can be introduced into the energy storage device 3, in particular the housing 4. In particular, a first valve outlet of the valve assembly 25 is fluidically connected to the inlet E1, and a second valve outlet of the valve assembly 25 is fluidically connected to the second inlet E2.A valve inlet of the valve assembly 25 is connected to the supply line 24. In the first switching state, the valve inlet is fluidically connected to the first valve outlet, and the second valve outlet is disconnected from the valve inlet. In the state described in... Fig. In the second switching state shown in Figure 2, the valve inlet is fluidically connected to the second valve outlet, and the first valve outlet is disconnected from the valve inlet. Thus, in the first switching state, the temperature control fluid from supply line 24 is directed from the valve inlet to the first valve outlet and, in particular, not to the second valve outlet, and in the second switching state, the temperature control fluid from supply line 24 is directed from the valve inlet to the second valve outlet and, in particular, not to the first valve outlet.

[0056] In the installed position of the temperature control system 1, inputs E1 and E2 point forward in the longitudinal direction of the vehicle, and thus in the direction of travel in which the vehicle moves when driven forward. The installation position of the temperature control system 1 is in Fig. 1 and Fig. Figure 2 shows the longitudinal direction of the motor vehicle, illustrated by a double arrow 28. The direction of travel, also referred to as the forward direction, is illustrated by an arrow 29. It can be seen that the inputs E1 and E2 are arranged on a front face S1 of the energy storage device 3, in particular the housing 4, which points forward in the longitudinal direction of the vehicle.

[0057] The energy storage device 3, in particular the housing 4, has an output A1 through which the temperature control fluid flowing through the return line 20 in the first and second switching states can be discharged from the energy storage device 3, in particular from the housing 4, and in particular from the return line 20. It can be seen that, in the installed position of the temperature control system 1, the output A1 points rearward in the longitudinal direction of the vehicle. This means that the output A1 is located on a rear side S2 of the energy storage device 3, in particular of the housing 4, which points rearward in the longitudinal direction of the vehicle, with the rear side S2 facing away from the front side S1 in the longitudinal direction of the vehicle. In other words, the inputs E1 and E2 point in the direction of travel and are preferably located in the front of the vehicle. The output A1 points against the direction of travel and is preferably located in the rear of the vehicle.The valve assembly 25, also referred to as a switching valve or designed as a switching valve, determines whether the storage cells 6 or the temperature control element 7 in the housing 4 are to be supplied with the temperature control fluid (flow through the supply line 19, thereby temperature-controlled, i.e., heated or cooled, the storage cells 6), or whether the storage cells 6 or the temperature control element 7 are to be bypassed by the temperature control fluid via the bypass line 21 and also via the return line 20. The bypass line 21 is also referred to as a bypass or bypass line.

[0058] The additional component 27 can be connected to circuit 2 via a particularly short conduit or integrated into circuit 2 and thereby arranged or connected in series with the energy storage device 3. The chiller 9 is integrated in series into circuit 2, in particular via a conduit element 30, by means of which the temperature control fluid, after flowing through the additional component 27, is discharged from the additional component 27 and directed to the chiller 9.For example, the conduit element 30 is an underfloor conduit located in an underfloor area, i.e., in an underfloor region and thus in the vehicle's vertical direction, beneath the floor of a vehicle body, for example, a self-supporting body structure that defines the interior of the vehicle. In particular, the underfloor area, and thus the conduit element 30, is overlapped or covered by the floor of the body structure in the longitudinal direction of the vehicle. The conduit element 30, also simply referred to as a conduit, could, for example, also be routed forward within the housing of the high-voltage storage system.

[0059] An embodiment of the energy storage unit 3 with inputs E1 and E2 on or at the front S1, and thus in the front section, and output A1 on or at the rear S2, and thus in the rear section, has the additional advantage over an embodiment in which inputs E1 and E2 and output A1 are located in the front section that all storage cells 6, also referred to as cells, can be supplied with the same flow rate of the temperature control fluid, thus enabling particularly uniform temperature control of the storage cells 6. Therefore, complex adjustments to pressure losses in the supply line 19 (also referred to as the supply) and the return line 20 (also referred to as the return) and thus in the lines forming the supply and return lines can be omitted.

[0060] Out of Fig. 2. Pipe sections L are visible, via which, for example, the temperature control elements 8 are connected to the return line 20, i.e., fluidically connected to the return line 20. From a design perspective, sufficient length of the pipe sections L must be ensured to prevent unintended temperature control, i.e., heating or cooling of the cells, particularly those immediately adjacent, in a bypass mode (i.e., in the second switching state), for example, by heat conduction or eddy currents, especially originating from the return line 20.In other words, by ensuring a sufficient length of the conductor sections L, an advantageous distance between the storage cells 6 or the temperature control parts 8 and the return line 20 can be achieved, so that, in particular in the second switching state, an unintentional temperature control of the storage cells 6 originating from the return line 20, also simply referred to as the return, or from the temperature control medium flowing through the return line 20, can be avoided.

[0061] The temperature control system 1 further comprises a second circuit 31, through which the temperature control medium flows. For example, the first circuit 2 is a low-temperature circuit, with the second circuit 31 preferably being a high-temperature circuit. The motor vehicle has at least or exactly two drive motors designed as electric machines 32 and 33, which are arranged in the second circuit 31 and are thus temperature-controlled, in particular cooled, by means of the temperature control medium flowing through the second circuit 31. The electric machines 32 and 33 are additional heat sources. For example, the drive motors (electric machines 32 and 33) are arranged parallel to each other in terms of fluid dynamics. The electric machine 32 is, for example, assigned to a front axle, so that the front wheels of the front axle can be driven electrically, in particular purely, by means of the electric machine 32.The electric machine 33 is, for example, assigned to a rear axle of the motor vehicle, so that, for example, the rear wheels of the rear axle can be driven electrically by means of the electric machine 33, in particular purely electrically. The rear axle of the motor vehicle is arranged behind the front axle of the motor vehicle in the longitudinal direction of the vehicle.

[0062] Furthermore, a cooler 34, designed as a heat exchanger, is arranged in the second circuit 31, by means of which the temperature control fluid flowing through the second circuit 31 can be cooled. The cooler 34 is an ambient air cooler, which, during travel, particularly when the vehicle is moving forward, is surrounded by the airflow and thus by the air from the vehicle's surroundings, also referred to as ambient air. A fan 35, preferably electrically operated, is associated with the cooler 34, by means of which air can be supplied as cooling air. The cooling air supplied by the air from 35 flows around the cooler 34, so that the temperature control fluid flowing through the cooler 34 can be cooled by the cooling air even when the vehicle is stationary or moving slowly.

[0063] The temperature control system 1 has a compensating reservoir 36 in which a quantity of the temperature control fluid, designated 37, can be received or is contained. This quantity 37 can be used to compensate for volume and / or quantity fluctuations of the temperature control fluid in circuit 31 and / or circuit 2. In particular, the fact that circuits 2 and 31 are fluidically connected to each other via a connecting line 38 makes it possible to compensate for volume and / or quantity fluctuations of the temperature control fluid in both circuit 31 and circuit 2 by means of the quantity 37 in the compensating reservoir 36.

[0064] The temperature control system 1 also has a flow path 39, which is fluidically connected to the circuit 31 at a first connection point V1 and at a second connection point V2. It can be seen that the condenser 12 is arranged both in the refrigeration circuit 10 and in the flow path 39. Thus, the condenser 12 is accessible to both the refrigerant flowing through the refrigeration circuit 10 and the temperature control fluid flowing through the flow path 39, which is preferably liquid. This allows heat to be exchanged between the temperature control fluid flowing through the flow path 39 and the refrigerant flowing through the refrigeration circuit 10 via the condenser 12, in particular such that the refrigerant can be cooled, or is cooled, by means of the temperature control fluid flowing through the flow path 39 via the condenser 12.

[0065] By means of flow path 39, at least a portion of the temperature control fluid flowing through circuit 31 can be diverted from circuit 31 at connection point V1 and introduced into flow path 39. The temperature control fluid diverted at connection point V1 can flow through flow path 39 and, on its way from connection point V1 to connection point V2, flows through condenser 12. At connection point V2, the temperature control fluid flowing through flow path 39 can be diverted out of flow path 39 and reintroduced into circuit 31.

[0066] A pump 40 is arranged in circuit 31, which is provided in addition to pumps 11 and 18. It can be seen that connection point V1 is located downstream of the cooler 34, specifically downstream of pump 40, and upstream of connection point V2, specifically of the electric machines 32 and 33. Thus, connection point V2 is located downstream of the electric machines 32 and 33 and upstream of the cooler 34. For example, the flow path 39 can be fluidically blocked by means of a shut-off valve 41, so that no temperature control fluid flows through the flow path 39, meaning that no temperature control fluid is diverted from circuit 31 and introduced into the flow path 39 at connection point V1. Since the cooler 34 is arranged in the circuit 31, and since the circuit 31 is preferably designed as a high-temperature circuit, the cooler 34 is also referred to as a high-temperature cooler (HT cooler).

[0067] Optionally, and therefore preferably, the temperature control system 1 can have a second valve device 42 that switches between a third switching state and one in Fig. The fourth switching state shown in Figure 1 is switchable, particularly electrically. In the third switching state, the first circuit 2 is fluidically connected to the second circuit 31 by means of the second valve assembly 42 such that the electrical energy storage device 3, i.e., the storage cells 6 or the temperature control element 7, the further component 27, and the chiller 9 are arranged downstream of the electric motors 32 and 33 and upstream of the cooler 34, in particular at connection point V2, and are thus fluidically connected in series with the drive motors. In the fourth switching state, the circuit 2 is separated from the second circuit 2 by means of the valve assembly 42 at least in such a way that at least a predominant part of the temperature control fluid flowing through the second circuit 31 bypasses the first circuit 2 on its way from the drive motors to the cooler 34, i.e., flows through the second circuit 2.

[0068] For example, the valve assembly 42 has a second valve inlet, a third valve outlet, and a fourth valve outlet. The temperature control fluid coming from the drive motors can be conveyed from the drive motors to the valve assembly 42 by means of a first line 44, the line 44 being fluidically connected to the second valve inlet. Circuit 2, in particular a circuit inlet K of circuit 2, is fluidically connected to the third valve outlet of the valve assembly 42, and the cooler 34 is fluidically connected to the fourth valve outlet of the valve assembly 42. In the third switching state, the third valve outlet is fluidically connected to the second valve inlet, and the fourth valve outlet is disconnected from the second valve inlet. In the fourth switching state, the fourth valve outlet is fluidically connected to the second valve inlet, and the third valve outlet is disconnected from the second valve inlet.

[0069] Fig. Figure 3 shows a second embodiment of the temperature control system 1, wherein the second embodiment essentially corresponds to or is based on the first embodiment. However, in the second embodiment, for example, it is provided that the energy storage device 3 and the component 27 and also the chiller 9 are arranged in a main circuit such as the circuit 31 or a branch of the circuit 31 between nodes K1 and K2 and are arranged in series with the drive motors and the cooler 34 in terms of flow characteristics, in particular and / or at least in the third switching state of the valve assembly 42.

[0070] In this state or embodiment, the energy storage unit 3, also referred to as the HV storage unit, can advantageously be cooled directly by the environment via the cooler 34, which can be provided as an option. Furthermore, it is conceivable that the drive motors, or the respective drive motor, a heat exchanger and / or the chiller 9, the energy storage unit 3, the further component 27, and the cooler 34 are arranged sequentially in the flow direction of the temperature control medium in the following order: Drive unit - heat exchanger or chiller 9 - energy storage 3 -, further component 27 - cooler 34

[0071] For example, the one in Fig. The circuit inlet designated K is node K1. For example, at node K2, the connecting line 38 is fluidically connected to circuit 2. In the second embodiment, in particular, the pump 18 could be arranged between nodes K1 and K2, especially in the main line. It is particularly evident that component 27, the chiller 9, and the energy storage device 3 are arranged downstream of node K1 and upstream of node K2, particularly with respect to the temperature control fluid flowing through circuit 2. Furthermore, it is evident that a check valve 43 is arranged in circuit 2, particularly downstream of component 27 and upstream of chiller 9, and especially upstream of circuit inlet K or node K1.The check valve 43 allows the temperature control fluid flowing through circuit 2 to flow away from the pump 18 and towards the chiller 9, junction K1 and / or circuit inlet K, and prevents an opposite flow behind the pump 18 originating from the chiller 9, the junction K1 or the circuit inlet K.

[0072] Fig. Figure 4 shows a third embodiment of the temperature control system 1. In the first embodiment and in the second embodiment, the component 27 is arranged outside the housing 4. The in Fig. The third embodiment shown in 4 essentially corresponds to the one in Fig. 1 and Fig. The third embodiment differs from the first embodiment shown in Figure 2, particularly in that, in the third embodiment, component 27 is arranged in the receiving space 5 and thus in the housing 4, i.e., within the housing 4 of the energy storage device 3. This provides, so to speak, an internal connection for component 27. Whereas, for example, in the first and second embodiments, component 27 is arranged outside the housing 4 and is fluidically connected, in particular via outlet A1, to the return line 20 running, in particular, within the housing 4, or to a portion of the return line 20 running within the housing 4, in the third embodiment, component 27 is fluidically connected within the housing 4 to the return line 20 running, at least partially, within the housing 4, or to the portion of the return line 20 running within the contents of the housing 4.This eliminates the need for an external line carrying the temperature control fluid from output A1 to component 27, particularly to its inlet through which the temperature control fluid can be introduced into component 27, which is still required in the first and second embodiments. The housing 4 has a total of, and in particular exactly, three connections, specifically in the form of inputs E1 and E2 and output A1.

[0073] Finally, it shows Fig.5. A fourth embodiment of the temperature control system 1. Essentially, the fourth embodiment is a combination of the second and third embodiments. In other words, the fourth embodiment is fundamentally based on the third embodiment, with the fourth embodiment, as in the second embodiment, having the energy storage device 3 and component 27 arranged in the main line between nodes K1 and K2. In the fourth embodiment, the pump 18 could alternatively be arranged in the main line between nodes K1 and K2. The arrangement or position of the chiller 9 is also variable. Reference symbol list 1 temperature control system 2 First cycle 3 Energy storage 4 cases 5 Recording room 6 memory cells 7 Temperature control element 8 Temperature control section 9 Chiller 10 Refrigeration cycle 11 Pump 12 Capacitor 13 evaporators 14 Expansion valve 15 Expansion valve 16 Internal heat exchanger 17 Capacitor 18 pump 19 Lead line 20 Return line 21 Bypass route 22 Total strand 23 Total strand 24 Supply line 25 Valve assembly 27 Additional Components 28 Double Arrow 29 Arrow 30 conductor element 31 Second Circulation 32 Electric Machine 33 Electric Machine 34 coolers 35 fans 36 expansion tanks 37 Quantity 38 Connecting line 39 Flow path 40 pump 41 Shut-off valve 42 Second valve assembly 43 Check valve 44 Management A1 Exit E1 First Entrance E2 Second Entrance K Circulation inlet K1 Junction K2 Junction L-shaped section of pipe S1 Front S2 back V1 liaison point V2 liaison point

Claims

[1] Temperature control system (1) for a motor vehicle, comprising at least one circuit (2) through which a temperature control medium flows, an electrical energy storage device (3) which has storage cells (6) designed for storing electrical energy, which are to be temperature controlled by means of the temperature control medium flowing through the circuit (2), and a heat exchanger (9) arranged in the circuit (2), through which heat can be transferred between the temperature control medium flowing through the circuit (2) and another fluid, wherein: - the cycle (2) exhibits: ◯ a supply line (19) through which the storage cells (6) can be supplied with the temperature control medium in order to temperature control the storage cells (6) by means of the temperature control medium, ◯ a return line (20) through which the temperature control fluid supplied to the storage cells (6) via the supply line (19) can be discharged from the storage cells (6), ◯ a bypass line (21) arranged upstream of the return line (20) and connected in series to the return line (20), via which the supply line (19) and the storage cells (6) are bypassed by the temperature control medium and the temperature control medium bypassing the supply line (19) and the storage cells (6) can be introduced into the return line (20), ◯ a supply line (24) common to the supply line (19) and the bypass line (21), and ◯ a valve assembly (25) which is switchable between: ▪ a first switching state in which the supply line (24) is fluidically connected to the supply line (19) via the valve device (25), whereby the supply line (19) can be supplied with the temperature control fluid from the supply line (24) via the valve device (25), and the storage cells (6) can be supplied via the storage cells (6), and the return line (20) can be supplied via the storage cells (6). ▪ a second switching state in which the supply line (24) is fluidically connected to the bypass line (21) via the valve device (25), whereby the bypass line (21) and the return line (20) can be supplied with the temperature control fluid from the supply line (24) via the valve device (25) and via the bypass line (21) the return line (20) bypassing the storage cells (6), and - in the circuit (2) downstream of the return line (20) at least one further component (27) is arranged, which can be supplied with the temperature control medium via the return line (20) in both the first switching state and the second switching state and can therefore be temperature controlled by means of the temperature control medium, characterized by , that: - the electrical energy storage device (3) has a first input (E1) through which the temperature control fluid flowing through the supply line (19) in the first switching state can be introduced into the electrical energy storage device (3) and thereby supplied to the storage cells (6), - the first inlet (E1) in the installation position of the temperature control system (1) points forward in the longitudinal direction (28) of the vehicle, - the electrical energy storage device (3) has a second input (E2) through which the temperature control fluid flowing through the bypass line (21) in the second switching state can be introduced into the electrical energy storage device (3), - the second inlet (E2) in the installation position of the temperature control system (1) points forward in the longitudinal direction (28) of the vehicle, - the electrical energy storage device (3) has an output (A1) through which the temperature control fluid flowing through the return line (20) in the first switching state and in the second switching state can be discharged from the electrical energy storage device (3) and supplied to the further component (27), and - the outlet (A1) in the installation position of the temperature control system (1) points to the rear in the longitudinal direction (28) of the vehicle. [2] Temperature control system (1) according to claim 1, characterized by a second circuit (31) through which the temperature control medium flows, in which at least one heat source (32, 33) which can be temperature controlled by means of the temperature control medium flowing through the second circuit (31) and a cooler (34) provided in addition to the heat exchanger (9) for cooling the temperature control medium flowing through the second circuit (31) are arranged. [3] Temperature control system (1) according to claim 2, characterized by, that the electrical energy storage device (3), the further component (27) and the heat exchanger (9) are arranged downstream of the heat source (32, 33) and upstream of the cooler (34) in the second circuit (31) and thus in series with the heat source (32, 33). [4] Temperature control system (1) according to claim 2, characterized by a second valve assembly (42) which is switchable between: - a third switching state in which the first circuit (2) is fluidically connected to the second circuit (31) by means of the second valve assembly (42) in such a way that the electrical energy storage device (3), the further component (27) and the heat exchanger (9) are arranged downstream of the heat source (32, 33) and upstream of the cooler (34) in the second circuit (31) and thus in series with the heat source (32, 33), and - a fourth switching state in which the first circuit (2) is separated from the second circuit (31) by means of the valve device (42) at least in such a way that at least a predominant part of the temperature control fluid flowing through the second circuit (31) bypasses the first circuit (2) on its way from the heat source (32, 33) to the cooler (34). [5] Temperature control system (1) according to any one of the preceding claims, characterized by , that the electrical energy storage device (3) has a housing (4) in which the storage cells (6) are accommodated. [6] Temperature control system (1) according to claim 5, characterized by , that the further component (27) is arranged outside the housing (4). [7] Temperature control system (1) according to any one of the preceding claims, characterized by , that the further component (27) is an electronic component, in particular a power electronics component, through which the electrical energy can be provided, or an electrical heating element. [8] Motor vehicle, with a temperature control system (1) according to one of the preceding claims.

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