Motor vehicle heat transfer medium circuit

Abstract

According to the present invention, a heat transfer medium circuit for a motor vehicle, particularly for a passenger vehicle, comprises: - a first sub-circuit having at least one heating device (111, 115) for heating the heat transfer medium flowing through the first sub-circuit and / or at least one cooling device (104) for cooling the heat transfer medium flowing through the first sub-circuit; - a second sub-circuit having at least one electric accumulator (202) that can be heated and / or cooled by the heat transfer medium flowing through the second sub-circuit, the electric accumulator being used to power at least one electric motor (301) for driving the motor vehicle; and - a mixing device (400; 500; 600); the mixing device being selectively switchable to: - at least one first operating state, the first operating state being used to transfer a first portion of the heat transfer medium flowing from the first sub-circuit to the second sub-circuit. In the sub-loop; and - in at least one second operating state, the second operating state is used to deliver a second portion of the heat transfer medium flowing from the first sub-loop, different from the first portion, to the second sub-loop, and to draw back the heat transfer medium flowing from the second sub-loop to the first sub-loop; wherein: - the mixing device can be switched to at least one third operating state for delivering a third portion of the heat transfer medium flowing from the first sub-loop, different from the first and second portions, to the second sub-loop, and to draw back the heat transfer medium flowing from the second sub-loop to the first sub-loop; and / or - the first sub-loop has at least one cabin heating device (118) for heating the cabin by the heat transfer medium flowing through the first sub-loop and / or at least one cabin cooling device (108) for cooling the cabin by the heat transfer medium flowing through the first sub-loop.

Description

Technical Field

[0001] The present invention relates to a heat transfer medium circuit for motor vehicles, particularly passenger vehicles, a motor vehicle, particularly a passenger vehicle having a heat transfer medium circuit, and a method for operating the motor vehicle. Background Technology

[0002] Motor vehicles with electric drive motors require electric storage devices to supply power to the motors.

[0003] By heating this energy storage device at low temperatures, power, reliability, application possibilities, and / or service life can be improved. Summary of the Invention

[0004] The purpose of this invention is to improve the operation of motor vehicles and / or their operation.

[0005] The object of the present invention is achieved by a heat transfer medium circuit having the features described in claim 1. Claims 9 and 10 claim protection for a motor vehicle having the heat transfer medium circuit set forth herein and a method for operating the motor vehicle set forth herein. The dependent claims relate to advantageous improvements.

[0006] According to one embodiment of the invention, a heat transfer medium circuit for a motor vehicle, and in one embodiment for a passenger vehicle, has a first sub-circuit, the first sub-circuit itself having: at least one heating device that heats or is configured, in particular, to heat the heat transfer medium flowing through the first sub-circuit; and / or at least one cooling device that cools the heat transfer medium flowing through the first sub-circuit or is configured, in particular, to cool the heat transfer medium flowing through the first sub-circuit.

[0007] In one embodiment, the heating device includes an internal combustion engine of a motor vehicle or a heat exchanger (thermally) coupled to an internal combustion engine. Additionally or alternatively, in one embodiment, the heating device includes a fuel cell of a motor vehicle or a heat exchanger (thermally) coupled to a fuel cell. Additionally or alternatively, in one embodiment, the heating device includes an electric heater or electrically operated heater, such as a PTC heater, of a motor vehicle, particularly an engine heating device and / or a cabin heating device, or includes a heat exchanger (thermally) coupled to the heater. Additionally or alternatively, in one embodiment, the heating device includes a heat pump of a motor vehicle, particularly a heat pump (thermally) coupled to a refrigerant circuit, or includes a heat exchanger (thermally) coupled to the heat pump.

[0008] According to one embodiment of the invention, the heat transfer medium circuit has a second sub-circuit, which has at least one electric accumulator that supplies power to at least one electric motor or is configured, in particular, to supply power to at least one electric motor, which itself drives a motor vehicle or is configured, in particular, to drive a motor vehicle.

[0009] According to one embodiment of the invention, the electric energy storage device is heated and / or cooled by a heat transfer medium flowing through a second sub-circuit, specifically the heat transfer medium circuit is configured, in particular, to heat / cool the electric energy storage device.

[0010] According to one embodiment of the present invention, the heat transfer medium circuit has a mixing device, which can be selectively switched or switched to:

[0011] - In at least one first operating state, the mixing device transfers a first portion of the heat transfer medium flowing into (the mixing device) from the first sub-loop to the second sub-loop. In one embodiment, the first portion may be zero. In an improved embodiment, the remaining portion of the heat transfer medium flowing into (the mixing device) from the first sub-loop, or a portion complementary to the first portion, is transferred to (transferred to or transferred back to) the first sub-loop. In one embodiment, this means all the heat transfer medium flowing into (the mixing device) from the first sub-loop is transferred to (transferred to or transferred back to) the first sub-loop.

[0012] - In at least one second operating state, the mixing device delivers a second portion of the heat transfer medium flowing into (the mixing device) from the first sub-loop, different from the first portion, to the second sub-loop. The second portion can be, in particular, 100%, i.e., in one embodiment, all the heat transfer medium flowing into (the mixing device) from the first sub-loop is delivered to the second sub-loop, and heat transfer medium flowing into (the mixing device) from the second sub-loop is drawn back to or delivered back to the first sub-loop. In one embodiment, all the heat transfer medium flowing into (the mixing device) from the second sub-loop is drawn back to or delivered back to the first sub-loop. In one embodiment, this is carried out in separate flow or fluid paths.

[0013] Thus, in one embodiment, the first sub-circuit and the second sub-circuit are separated from each other in a first operating state of the mixing device, specifically (in terms of flow technology) connected in parallel, and connected in series (in terms of flow technology) in a second operating state.

[0014] Thus, in one embodiment, the accumulator temperature can be adjusted via the first sub-circuit in the second operating state, in another embodiment, it can be heated, and thus in another embodiment, power, reliability, applicability and / or service life, and consequently, the operation of the vehicle are improved.

[0015] According to one embodiment of the invention, the first sub-circuit has at least one cabin heating device that heats the passenger compartment of the motor vehicle through a heat transfer medium flowing through the first sub-circuit, or is configured, in particular, configured or used to heat the passenger compartment of the motor vehicle, and / or the first sub-circuit has at least one cabin cooling device that cools one or more passenger compartments of the motor vehicle through a heat transfer medium flowing through the first sub-circuit, or is configured, in particular, configured or used to cool one or more passenger compartments of the motor vehicle.

[0016] Therefore, one embodiment of the present invention is based on the idea of ​​delivering the heat transfer medium of the cabin heat transfer medium (sub) circuit to the heat transfer medium (sub) circuit of the accumulator for temperature regulation of the accumulator, and in particular, delivering the heat transfer medium of the cabin heating circuit to the heat transfer medium (sub) circuit of the accumulator for heating the accumulator.

[0017] Thus, in particular, compared to heat transfer (pure) transfer from the passenger cabin heat transfer medium (sub) loop to the accumulator heat transfer medium (sub) loop via a heat exchanger, one embodiment can improve structural size and / or complexity and / or power, reliability, applicability and / or service life, and consequently, the operation of the motor vehicle.

[0018] As an addition or alternative to the use of cabin heat transfer medium (sub)loops, according to one embodiment of the invention, the mixing device can be switched or switched to at least one third operating state in which the mixing device delivers a third portion (which may be between the first and second portions, specifically greater than 0% and / or less than 100%) of the heat transfer medium flowing from the first subloop into the second subloop to the second subloop, and draws back or delivers the heat transfer medium flowing from the second subloop into the first subloop.

[0019] In one embodiment, in a third operating state, the mixing device delivers (transfers to or delivers back to) a portion of the heat transfer medium flowing from the first sub-loop to (the mixing device) that is complementary to the third portion to the first sub-loop, and / or delivers (transfers to or delivers back to) the remaining portion of the heat transfer medium flowing from the second sub-loop to (the mixing device) that was not delivered to the first sub-loop to (the second sub-loop).

[0020] Therefore, one embodiment of the present invention is based on the idea that, in one embodiment, in addition to parallel and series operation or parallel and series mode, a hybrid operation is provided in which (only) a portion of the heat transfer medium branches from the first sub-loop to the second sub-loop and mixes with the heat transfer medium of the second sub-loop.

[0021] Thus, in one embodiment, the temperature of the accumulator can be better regulated, and therefore in one embodiment, power, reliability, applicability and / or service life and consequently, the operation of the vehicle can be improved.

[0022] Advantageously, the heat transfer medium of the cabin heating circuit often has a higher temperature than that of the heat transfer medium used for temperature regulation of the electric accumulator, specifically for the heating circuit of the accumulator. In one embodiment, through the mixing and branching of the aforementioned partial streams / substreams, the heat transfer medium from the cabin heating circuit can be advantageously used for temperature regulation, especially heating, of the electric accumulator.

[0023] Accordingly, in one embodiment, it is particularly advantageous to combine the use of cabin heat transfer medium (sub) loops with the mixing and branching of partial flows, however the invention is not limited thereto.

[0024] In one embodiment, the mixing device is selectively switchable or switchable to multiple different third operating states, in which the mixing device respectively delivers a third portion of the heat transfer medium flowing from the first sub-loop (into the mixing device) that is different from the first and second portions and the third portion of other third operating states (this third portion can be, in particular, between the first and second portions, specifically greater than 0 (%) and / or less than 100%) to the second sub-loop, and draws back or delivers the heat transfer medium flowing from the second sub-loop (into the mixing device) to the first sub-loop.

[0025] In one embodiment, in the third operating state, the mixing device (respectively) delivers a portion of the heat transfer medium flowing from the first sub-loop into (the mixing device) that is complementary to the (corresponding) third portion to (transfer to or deliver back to) the first sub-loop, and / or delivers the remaining portion of the heat transfer medium flowing from the second sub-loop into (the mixing device) that was not delivered to the first sub-loop to (transfer to or deliver back to) the second sub-loop.

[0026] In one embodiment, the mixing device is continuously adjustable or modulating between at least two of the operating states, and in another embodiment, continuously adjusting from a first operating state to a third operating state or to one of the third operating states and / or from a second operating state to the third operating state or to one of the third operating states and / or from one of the third states to another of the third states.

[0027] Therefore, in one embodiment, the temperature regulation of the electric energy storage device, especially the heating, can be optimized, and thus in one embodiment, power, reliability, applicability and / or service life, and consequently, the operation of the vehicle, can be improved.

[0028] In one embodiment, the first share is up to 10%, particularly up to 5%, and in an improved embodiment, the first share is 0%. Additionally or alternatively, in one embodiment, the second share is at least 90%, particularly at least 95%, and in an improved embodiment, the second share is 100%. In other words, by means of a mixing device, the first sub-circuit and the second sub-circuit are completely separated from each other in a first operating state of the mixing device, specifically (in terms of flow technology) in parallel, and in a second operating state (in terms of flow technology) in series.

[0029] Additionally or alternatively, in one embodiment, the third share of the third operating state or one or more third operating states is at least 30% and / or at most 70%. Additionally or alternatively, in one embodiment, the third share of at least one third operating state is greater than 0% and less than 30%, and / or the third share of at least one third operating state is greater than 70% and less than 100%.

[0030] Therefore, in one embodiment, the temperature regulation of the electric energy storage device, especially the heating, can be further optimized, and thus, in one embodiment, power, reliability, applicability and / or service life, and consequently, the operation of the vehicle, can be improved.

[0031] In one embodiment, the mixing device has at least one mixing valve, the housing of which, in one embodiment, includes: at least one first input portion, configured, in particular, to or used to introduce or flow a heat transfer medium from a first sub-loop (specifically, into the mixing valve in the mixing device); at least one first output portion, configured, in particular, to or used to export or return a heat transfer medium (from the mixing valve in the mixing device) to or back into the first sub-loop; at least one second input portion, configured, in particular, to or used to introduce or flow a heat transfer medium from a second sub-loop (specifically, into the mixing valve in the mixing device); and at least one second output portion, configured, in particular, to or used to export or return a heat transfer medium (from the mixing valve in the mixing device) to or back into the second sub-loop.

[0032] A mixing valve, in one embodiment, a valve element or regulating element of a mixing valve, in one embodiment, being housed in a housing, selectively adjustable, in one embodiment rotatable to or adjusted to a position, in one embodiment rotatable to a position, in one embodiment continuously adjustable between positions, in one embodiment rotatable or adjustable, in one embodiment rotatable:

[0033] - At least one first switching position, in which a first input (in one embodiment only) is connected to a first output (in flow technology, especially via a valve or regulating element), and a second input (in an improved embodiment only) is connected to a second output (in flow technology, especially via a valve or regulating element).

[0034] - At least one second switching position, in which the first input (in one embodiment only) is connected to the second output (in flow technology, especially via a valve or regulating element), and the second input (in one embodiment only) is connected to the first output (in flow technology, especially via a valve or regulating element); and

[0035] - One or more intermediate positions, in which a first input portion is connected to a first output portion and a second output portion (in flow technology, especially via a valve or regulating element), and a second input portion is connected to the first output portion and the second output portion (in flow technology, especially via a valve or regulating element).

[0036] Thus, in one implementation, a particularly compact heat transfer medium loop and mixing device can be achieved.

[0037] In one implementation scheme:

[0038] The mixing device has at least one first multi-way valve, and in one embodiment, the housing of the first multi-way valve has:

[0039] - At least one input section, through which the heat transfer medium is introduced from or flows into (the mixing device, specifically the first multi-way valve) from the first sub-loop, or is configured, in particular, configured or used to introduce or flow the heat transfer medium from or into (the mixing device, specifically the first multi-way valve) from the first sub-loop.

[0040] (in the first multi-way valve);

[0041] - At least one first output, through which heat transfer medium (from the mixing device, specifically the first multi-way valve) is exported to or returned to the first sub-loop, or the first output is configured, in particular, configured or used to export heat transfer medium (from the mixing device, specifically the first multi-way valve) to or return to the first sub-loop.

[0042] The first multi-way valve outputs or returns to the first sub-circuit; and

[0043] - At least one second output, through which the heat transfer medium (from the mixing device, specifically the first multi-way valve) is discharged to the second sub-loop, or the second output is configured, in particular configured or used to discharge the heat transfer medium (from the mixing device, specifically the first multi-way valve) to the second sub-loop.

[0044] (From the valve) is output to the second sub-circuit;

[0045] The mixing device has at least one second multi-way valve, in one embodiment connected in parallel with and / or synchronized with the first multi-way valve, wherein the housing of the second multi-way valve, in one embodiment, has:

[0046] - At least one input section, through which the heat transfer medium is introduced or flows into or configured, in particular configured or used for the introduction or flow of (the mixing device, specifically the second sub-loop) of the heat transfer medium.

[0047] (in a two-way valve);

[0048] - At least one first output, through which heat transfer medium (from the mixing device, specifically the second multi-way valve) is discharged to the first sub-loop, or the first output is configured, in particular configured or used to discharge heat transfer medium (from the mixing device, specifically the second multi-way valve) to the first sub-loop.

[0049] (from the valve) is output to the first sub-circuit; and

[0050] - At least one second output section, through which heat transfer medium (from the mixing device, specifically the second multi-way valve) is exported to or returned to the second sub-loop, or the second output section is configured, in particular, configured or used to export heat transfer medium (from the mixing device, specifically the second multi-way valve) to or returned to the second sub-loop.

[0051] A first multi-way valve, in one embodiment, a valve element or regulating element of the first multi-way valve, in one embodiment, in its housing, adjustable, in one embodiment, rotatable to or adjusted to, in one embodiment, rotatable to, in one embodiment, selectively and particularly continuously adjustable between, in one embodiment, rotatable or adjustable, in one embodiment, rotatable:

[0052] - At least one first switching position, in which the input of the first multi-way valve (in one embodiment only) is connected to its first output (in flow technology, especially via a valve or regulating element);

[0053] - At least one second switching position, in which the input (in one embodiment only) is connected to the second output of the first multi-way valve (in flow technology, especially via a valve or regulating element); and

[0054] - One or more intermediate positions, in which the input is connected to a first output and a second output (in flow technology, especially via a valve or regulating element).

[0055] The second multi-way valve, in one embodiment, is a valve or regulating element of the second multi-way valve, in one embodiment, in its housing, adjustable, in one embodiment, rotatable to, or adjusted to, in one embodiment, rotated to, in one embodiment, selectively and particularly continuously adjustable between, in one embodiment, rotatable or in adjustment, in one embodiment, rotated:

[0056] - At least one first switching position, in which the input of the second multi-way valve (in one embodiment only) is connected to its first output (in flow technology, especially via a valve or regulating element);

[0057] - At least one second switching position, in which the input (in one embodiment only) is connected to the second output of the second multi-way valve (in flow technology, especially via a valve or regulating element); and

[0058] - One or more intermediate positions, in which the input is connected to a first output and a second output (in flow technology, especially via a valve or regulating element).

[0059] Therefore, in one implementation, a simpler multi-way valve can be used.

[0060] In one embodiment, the heat transfer medium circuit has at least one heat exchanger that transfers heat between a first sub-circuit and a second sub-circuit, or is configured, in particular, to transfer heat.

[0061] Therefore, in one embodiment, the temperature regulation of the electric energy storage device, especially the heating, can be optimized, and thus in one embodiment, power, reliability, applicability and / or service life, and consequently, the operation of the vehicle, can be improved.

[0062] In one embodiment, the heat transfer medium circuit has a third sub-circuit, the third sub-circuit having at least one electric motor, the electric motor being powered by an electric accumulator, driving the vehicle and being heated and / or cooled by the heat transfer medium flowing through the third sub-circuit, or the heat transfer medium circuit or the electric motor, accumulator or third sub-circuit being configured, in particular, configured or used as described above.

[0063] In one embodiment, the heat transfer medium loop has a switching device that can be selectively switched or switched to:

[0064] - In at least one first operating state, the switching device transfers a first portion, particularly a first portion that may be zero, of the heat transfer medium flowing into (the switching device) from the second sub-loop to the third sub-loop, and in an improved embodiment, the remaining portion, or a portion complementary to the first portion, of the heat transfer medium flowing into (the switching device) from the second sub-loop, in one embodiment, that is, all the heat transfer medium flowing into (the switching device) from the second sub-loop, is redirected or transferred back to the second sub-loop; and

[0065] - In at least one second operating state, the switching device transfers a portion of the heat transfer medium flowing from the second sub-loop (in the switching device) that is different from the first portion, and in particular may be 100%, to the third sub-loop in one embodiment, or all the heat transfer medium flowing from the second sub-loop (in the switching device) in one embodiment, or the heat transfer medium flowing from the third sub-loop (in the switching device) in another embodiment, or all the heat transfer medium flowing from the third sub-loop (in the switching device) in one embodiment, back to or transfer back to the second sub-loop in one embodiment, or in a separate flow or fluid path.

[0066] Thus, in one embodiment, by switching devices, the second and third sub-circuits are separated from each other in the first operating state of the switching devices, specifically (in terms of flow technology) connected in parallel, and connected in series (in terms of flow technology) in the second operating state.

[0067] Thus, in one embodiment, the accumulator temperature can be adjusted via a third sub-circuit in the second operating state, and in another embodiment, the accumulator can be heated, thereby improving power, reliability, applicability, and / or service life, and consequently, the operation of the vehicle.

[0068] In one embodiment, the switching device is selectively switchable or switchable to one or more third operating states, in which the switching device (respectively) delivers a third portion of the heat transfer medium flowing from the second sub-loop (into the switching device) that is different from the first and second portions (this third portion, in particular, may be between the first and second portions, specifically greater than 0% and / or less than 100%, and / or different from the third portion of other third operating states) to the third sub-loop, and draws back or delivers the heat transfer medium flowing from the third sub-loop (into the switching device) to the second sub-loop.

[0069] In one embodiment, in one or more of the third operating states, the switching device (respectively) delivers a portion of the heat transfer medium flowing from the second sub-loop into (the switching device) that is complementary to the (corresponding) third portion to (transfer to or deliver back to) the second sub-loop and / or delivers the remaining portion of the heat transfer medium flowing from the third sub-loop into (the switching device) that was not delivered to the second sub-loop to (transfer to or deliver back to) the third sub-loop.

[0070] In one embodiment, the switching device is continuously adjustable or adaptable between at least two of the operating states, and in another embodiment, continuously from a first operating state to the third operating state or one of the third operating states and / or from a second operating state to the third operating state or one of the third operating states and / or from one of the third operating states to another third operating state.

[0071] Therefore, in one embodiment, similar advantages as described above with reference to the first sub-circuit can be achieved. Accordingly, in one embodiment, the switching device can also be implemented as explained above with reference to the mixing device. In one embodiment, the switching device can also have a 4 / 2 valve, etc., and in particular, it can be a 4 / 2 valve, etc.

[0072] According to one embodiment of the invention, a motor vehicle has: at least one electric motor that drives the motor vehicle or is configured, in particular, configured or used to drive the motor vehicle; and a heat transfer medium circuit described herein, wherein at least one electric accumulator of the motor vehicle can be heated and / or cooled by a heat transfer medium flowing through a second sub-circuit to power the at least one electric motor or is configured, in particular, configured or used to power the at least one electric motor.

[0073] In one implementation, the motor vehicle is an electric vehicle; in another implementation, it is a pure electric vehicle.

[0074] Since there is no waste heat from driving an internal combustion engine or the like available for use, the present invention can be particularly advantageously used in such motor vehicles.

[0075] In another embodiment, the motor vehicle has at least one internal combustion engine for jointly and / or alternately driving the motor vehicle with the at least one electric motor. In one embodiment, the internal combustion engine may be a heating device for heating the heat transfer medium flowing through the first sub-loop or thermally coupled to such a heating device. Additionally or alternatively, the motor vehicle has at least one fuel cell in one embodiment, which in one embodiment powers the at least one electric motor. The fuel cell in one embodiment may be a heating device for heating the heat transfer medium flowing through the first sub-loop or thermally coupled to such a heating device.

[0076] In particular, due to the waste heat generated by driving an internal combustion engine or fuel cell, the present invention can be used in such motor vehicles with particular advantage.

[0077] In one embodiment, the first sub-circuit and / or the second sub-circuit and / or the third sub-circuit (each) have at least one, in one embodiment, an electric heater, especially a PTC heater, etc.

[0078] Thus, in one embodiment, the energy storage device can be advantageously heated, and thus in another embodiment, power, reliability, applicability and / or service life and consequently, the operation of the motor vehicle can be improved. Attached Figure Description

[0079] Other advantages and features are derived from the dependent claims and embodiments. Partially, schematically:

[0080] Figure 1 A heat transfer medium circuit according to an embodiment of the present invention is shown;

[0081] Figure 2 The mixing valve for the heat transfer medium circuit is shown in different operating states or (switching) positions; and

[0082] Figure 3A heat transfer medium circuit according to another embodiment of the present invention is shown. Detailed Implementation

[0083] Figure 1 A heat transfer medium circuit according to an embodiment of the present invention is shown.

[0084] The heat transfer medium circuit has a first sub-circuit, which includes a compressor 101, a condenser 102, an expansion valve 103, a heat exchanger 104 at the front of the vehicle, another expansion valve 105, and another heat exchanger 106 connected in series. A further expansion valve 107 and an air conditioning evaporator 108 for cooling the passenger cabin 109 are connected in series with the expansion valve 105 and the heat exchanger 106 in parallel. A regulating valve 110 is connected in parallel with the further expansion valve 107 and the air conditioning evaporator 108.

[0085] The PTC heater 111, which is connected in series with pump 112 and 3 / 2 valve 113, the drive internal combustion engine 115, which is connected in series with pump 114, and the radiator 116 and thermostat 117 are connected to each other or in parallel, and are connected in series with heat exchanger 118 and condenser 102 for heating cabin 109.

[0086] The heat transfer medium circuit also has a second sub-circuit, which has a pump 201 and a battery 202 for supplying power to the motor 301. The second sub-circuit is thermally coupled to the first sub-circuit via a heat exchanger 106.

[0087] The heat transfer medium circuit also has a third sub-circuit, which includes a motor 301, a power electronic device 302, a charging device 303, a pump 304, a 3 / 2 valve 305, and a radiator 306.

[0088] The heat transfer medium circuit also includes a mixing device with a mixing valve 400. This mixing valve has a first input section 4A for introducing heat transfer medium from the first sub-circuit, a first output section 4B for discharging heat transfer medium into the first sub-circuit, a second input section 4C for introducing heat transfer medium from the second sub-circuit, and a second output section 4D for discharging heat transfer medium into the second sub-circuit. Figure 2 The mixing valve is shown in different operating states or (switching) positions.

[0089] First running state or first switching position ( Figure 2In (a)), the first input 4A is connected to the first output 4B (only), and the second input 4C is connected to the second output 4D (only), thereby conveying 0% of the first share of the heat transfer medium flowing into the first sub-loop to the second sub-loop, and conveying the complementary 100% share to the first sub-loop, and conveying all the heat transfer medium flowing into the input 4C from the second output 4D to the second sub-loop. That is to say, the first sub-loop and the second sub-loop are technically separated from each other, or more precisely, connected in parallel.

[0090] Second operating state or second switching position ( Figure 2 In (b), the first input 4A is connected to the second output 4D (only), and the second input 4C is connected to the first output 4B (only), so that 100% of the second portion of the heat transfer medium flowing into the first sub-loop is transported to the second sub-loop, and all the heat transfer medium flowing into the input 4C is transported from the first output 4B to the first sub-loop. That is, the first sub-loop and the second sub-loop are connected in series.

[0091] In multiple third operating states or intermediate positions (one of which is in) Figure 2 As shown in (c), the first input 4A is connected to the first output 4B and the second output 4D, and the second input 4C is connected to the first output 4B and the second output 4D, so that, depending on the switching position of the mixing valve 400, a variety of different third portions of the heat transfer medium flowing in from the first sub-loop, such as 30%, 50%, or 70%, are delivered to the second sub-loop. That is, a portion of the heat transfer medium of the first sub-loop is branched into the second sub-loop and mixed with the second sub-loop.

[0092] The third sub-loop can be selectively connected in series with or separated from the second sub-loop by a switching device (4 / 2 valve 700). The switching device (4 / 2 valve 700) can be selectively switched to: a first operating state, for conveying 0% of the first share of the heat transfer medium flowing from the second sub-loop to the third sub-loop; and a second operating state, for conveying 100% of the second share of the heat transfer medium flowing from the second sub-loop, which is different from the first share, to the third sub-loop.

[0093] Figure 3 In accordance with Figure 1 The illustration shows a heat transfer medium circuit according to another embodiment of the invention. Features corresponding to each other are indicated by the same reference numerals, and the differences are described below with reference to the above description.

[0094] exist Figure 3In one implementation scheme, instead of mixing valve 400, the mixing device has two parallel and synchronized multi-way valves 500 and 600.

[0095] The first multi-way valve 500 has an input section 5A for introducing a heat transfer medium from a first sub-loop, a first output section 5B for discharging a heat transfer medium into the first sub-loop, and a second output section 5C for discharging a heat transfer medium into a second sub-loop.

[0096] The second multi-way valve 600 has an input section 6A for introducing heat transfer medium from a second sub-loop, a first output section 6B for discharging heat transfer medium into a first sub-loop, and a second output section 6C for discharging heat transfer medium into a second sub-loop.

[0097] In the first switching position of the first multi-way valve 500, the input section 5A of the first multi-way valve is connected only to the first output section 5B. In the second switching position, the input section 5A is connected only to the second output section 5C. In multiple intermediate positions, the input section 5A is connected to the first output section 5B and the second output section 5C respectively. In these multiple intermediate positions, different proportions of the heat transfer medium flowing in through the input section 5A are delivered to the first output section 5B and transported through the first output section 5B, and the remaining portion, specifically... The complementary portions are respectively fed to and through the second output section 5C. For example, in one intermediate position, 30% is fed to and through 5B and 70% is fed to and through 5C; in another intermediate position, 50% is fed to and through 5B and 50% is fed to and through 5C; and / or in another intermediate position, 70% is fed to and through 5B and 30% is fed to and through 5C.

[0098] In the first switching position of the second multi-way valve 600, the input section 6A of the second multi-way valve is connected only to the first output section 6B. In the second switching position, the input section 6A is connected only to the second output section 6C. Furthermore, in multiple intermediate positions, the input section 6A is connected to both the first output section 6B and the second output section 6C. In these multiple intermediate positions, different proportions of the heat transfer medium flowing in through the input section 6A are delivered to and transported through the first output section 6B, and the remaining portion is... The complementary portions are respectively fed to the second output section 6C and conveyed through the second output section 6C. For example, in one intermediate position, 30% is fed to 6B and conveyed through 6B and 70% is fed to 6C and conveyed through 6C; in another intermediate position, 50% is fed to 6B and conveyed through 6B and 50% is fed to 6C and conveyed through 6C; and / or in another intermediate position, 70% is fed to 6B and conveyed through 6B and 30% is fed to 6C and conveyed through 6C.

[0099] In this way, the first and second sub-loops can be separated from each other (first multi-way valve 500: first switching position 5A→5B; second multi-way valve 600: second switching position 6A→6C) or connected in series (first multi-way valve 500: second switching position 5A→5C; second multi-way valve 600: first switching position 6A→6B), or a portion of the heat transfer medium of the first sub-loop can be branched into the second sub-loop and mixed with the second sub-loop (first multi-way valve 500: intermediate position 5A→5B, 5C; second multi-way valve 600: intermediate position 6A→6B, 6C).

[0100] While exemplary embodiments have been explained in the foregoing description, it should be noted that various improvements are possible. Furthermore, it should be pointed out that the exemplary embodiments are merely examples and should not in any way limit the scope, application, or structure of protection. Rather, the foregoing description provides instruction to those skilled in the art on implementing at least one exemplary embodiment, wherein various changes, particularly in the function and arrangement of the described components, can be made without departing from the scope of protection, which is achieved through the claims and equivalent combinations of features.

[0101] List of reference numerals

[0102] 4A First Mixing Valve Input Section

[0103] 4B First Mixing Valve Output Section

[0104] 4C Second Mixing Valve Input Section

[0105] 4D Second Mixing Valve Output Section

[0106] 5A First Multi-way Valve Input Section

[0107] 5B First Output Section of First Multi-way Valve

[0108] 5C First Multi-way Valve Second Output Section

[0109] 6A Second Multi-way Valve Input Section

[0110] 6B Second Multi-way Valve First Output Section

[0111] The second output section of the 6C second multi-way valve

[0112] 101 compressor

[0113] 102 Condenser

[0114] 103 Expansion Valve

[0115] 104 heat exchanger

[0116] 105 expansion valve

[0117] 106 heat exchanger

[0118] 107 expansion valve

[0119] 108 Air Conditioning Equipment Evaporator

[0120] Cabin 109

[0121] 110 regulating valve

[0122] 111PTC heater

[0123] 112 pump

[0124] 113 3 / 2 valve

[0125] 114 pump

[0126] 115 drive internal combustion engine

[0127] 116 radiator

[0128] 117 thermostat

[0129] 118 heat exchanger

[0130] 201 pump

[0131] 202 battery

[0132] 301 electric motor

[0133] 302 Power Electronics

[0134] 303 charging equipment

[0135] 304 pump

[0136] 305 3 / 2 valve

[0137] 306 radiator

[0138] 400 mixing valve

[0139] 500 First Multi-way Valve

[0140] 600 Second Multi-way Valve

[0141] 700 4 / 2 valve

Claims

1. A heat transfer medium circuit for motor vehicles, wherein, The heat transfer medium circuit has the following characteristics: - A first sub-loop having at least one heating device (111, 115) for heating the heat transfer medium flowing through the first sub-loop and / or at least one cooling device (104) for cooling the heat transfer medium flowing through the first sub-loop. - A second sub-circuit having at least one electric accumulator (202) that can be heated and / or cooled by a heat transfer medium flowing through the second sub-circuit, the electric accumulator being used to supply power to at least one electric motor (301) for driving a motor vehicle; as well as - Mixing equipment (400; 500; 600), the mixing equipment can be selectively switched to: - In at least one first operating state, a first portion of the heat transfer medium flowing from the first sub-loop is transferred to the second sub-loop; and - In at least one second operating state, a second portion of the heat transfer medium flowing from the first sub-loop, different from the first portion, is delivered to the second sub-loop, and the heat transfer medium flowing from the second sub-loop is drawn back to the first sub-loop. in - The mixing device can switch to at least one third operating state for supplying a third portion of the heat transfer medium flowing from the first sub-loop, different from the first and second portions, to the second sub-loop, and for guiding the heat transfer medium flowing from the second sub-loop back to the first sub-loop; and / or - The first sub-circuit has at least one cabin heating device (118) for heating the cabin through a heat transfer medium flowing through the first sub-circuit and / or at least one cabin cooling device (108) for cooling the cabin through a heat transfer medium flowing through the first sub-circuit.

2. The heat transfer medium circuit according to claim 1, characterized in that, The mixing device can selectively switch to multiple different third operating states, which are used to deliver a third portion of the heat transfer medium flowing from the first sub-loop, different from the first and second portions and the third portions of other third operating states, to the second sub-loop, and to draw the heat transfer medium flowing from the second sub-loop back to the first sub-loop.

3. The heat transfer medium circuit according to claim 1 or 2, characterized in that, The first share is up to 10%, and / or the second share is at least 90%, and / or the third share of at least one third operating state is at least 30% and / or up to 70%.

4. The heat transfer medium circuit according to claim 1 or 2, characterized in that, The mixing device has at least one mixing valve (400), the mixing valve having: - At least one first inlet (4A) for introducing heat transfer medium from the first sub-loop; - At least one first output section (4B) for discharging heat transfer medium into the first sub-loop. - At least one second inlet (4C) for introducing heat transfer medium from the second sub-loop; and - At least one second output section (4D) for discharging the heat transfer medium into the second sub-loop. The mixing valve can be adjusted to: - In at least one first switching position, the first input is connected to the first output, and the second input is connected to the second output; - In at least one second switching position, the first input is connected to the second output, and the second input is connected to the first output; as well as - In one or more intermediate positions, in which the first input portion is connected to the first output portion and the second output portion respectively, and the second input portion is connected to the first output portion and the second output portion.

5. The heat transfer medium circuit according to claim 1 or 2, characterized in that, The mixing device has at least one first multi-way valve (500), the first multi-way valve having: - At least one input section (5A) for introducing heat transfer medium from the first sub-loop; - At least one first output section (5B) for discharging heat transfer medium into the first sub-loop. - At least one second output section (5C) for discharging the heat transfer medium into the second sub-loop. as well as The mixing device has at least one second multi-way valve (600), the second multi-way valve having: - At least one input section (6A) for introducing heat transfer medium from the second sub-loop; - At least one first output section (6B) for discharging the heat transfer medium into the first sub-loop; and - At least one second output section (6C) for discharging the heat transfer medium into the second sub-loop. in, The first multi-way valve can be adjusted to: - In at least one first switching position, the input of the first multi-way valve is connected to its first output. - In at least one second switching position, the input of the first multi-way valve is connected to its second output; and - In one or more intermediate positions, the input portion of the first multi-way valve is connected to the first output portion and the second output portion of the first multi-way valve, respectively; as well as The second multi-way valve can be adjusted to: - In at least one first switching position, the input of the second multi-way valve is connected to the first output of the second multi-way valve; - In at least one second switching position, the input of the second multi-way valve is connected to the second output of the second multi-way valve; and - In one or more intermediate positions, the input portion of the second multi-way valve is connected to the first output portion and the second output portion of the second multi-way valve, respectively.

6. The heat transfer medium circuit according to claim 1 or 2, characterized in that... It has at least one heat exchanger (106) for heat transfer between the first sub-loop and the second sub-loop.

7. The heat transfer medium circuit according to claim 1 or 2, characterized in that... have: - A third sub-circuit, the third sub-circuit having at least one electric motor (301) for driving a motor vehicle, which can be heated and / or cooled by a heat transfer medium flowing through the third sub-circuit and is powered by an electric storage device; and - Switching device (700), the switching device can be selectively switched to: - In at least one first operating state, a first portion of the heat transfer medium flowing from the second sub-loop is transferred to the third sub-loop; and - In at least one second operating state, a second portion of the heat transfer medium flowing from the second sub-loop, different from the first portion, is delivered to the third sub-loop.

8. The heat transfer medium circuit according to claim 7, characterized in that, The switching device can selectively switch to at least one third operating state for delivering a third portion of the heat transfer medium flowing from the second sub-loop, different from the first and second portions, into the third sub-loop; and / or can continuously adjust between at least two operating states in the third operating state.

9. The heat transfer medium circuit according to claim 1, characterized in that, The motor vehicle is a passenger car.

10. The heat transfer medium circuit according to claim 2, characterized in that, The mixing device can continuously adjust between at least two of the third operating states.

11. The heat transfer medium circuit according to claim 3, characterized in that, The first share is equal to 0%.

12. The heat transfer medium circuit according to claim 3, characterized in that, The second share equals 100%.

13. The heat transfer medium circuit according to claim 4, characterized in that, The mixing valve has adjustable valve elements.

14. The heat transfer medium circuit according to claim 13, characterized in that, The valve element can be continuously adjusted between a first switching position, a second switching position, and one or more intermediate positions.

15. The heat transfer medium circuit according to claim 14, characterized in that, The valve element is rotatable between a first switching position, a second switching position, and one or more intermediate positions.

16. The heat transfer medium circuit according to claim 5, characterized in that, The second multi-way valve (600) is connected in parallel with the first multi-way valve and / or synchronized with the first multi-way valve.

17. The heat transfer medium circuit according to claim 5, characterized in that, The first multi-way valve has an adjustable valve element.

18. The heat transfer medium circuit according to claim 17, characterized in that, The valve element can be continuously adjusted between a first switching position, a second switching position, and one or more intermediate positions.

19. The heat transfer medium circuit according to claim 18, characterized in that, The valve element is rotatable between a first switching position, a second switching position, and one or more intermediate positions.

20. The heat transfer medium circuit according to claim 5, characterized in that, The second multi-way valve has an adjustable valve element.

21. The heat transfer medium circuit according to claim 20, characterized in that, The valve element can be continuously adjusted between a first switching position, a second switching position, and one or more intermediate positions.

22. The heat transfer medium circuit according to claim 21, characterized in that, The valve element is rotatable between a first switching position, a second switching position, and one or more intermediate positions.

23. The heat transfer medium circuit according to claim 8, characterized in that, The switching device can selectively switch to multiple different third operating states to deliver a third portion of the heat transfer medium flowing from the second sub-loop, which is different from the first and second portions and the third portions of other third operating states, to the third sub-loop.

24. A motor vehicle, wherein: - It has at least one electric motor (301) for driving the motor vehicle. - It has a heat transfer medium circuit according to any one of claims 1-23; - Having or not having at least one internal combustion engine (115) for driving a motor vehicle; and - It may or may not have at least one fuel cell.

25. The motor vehicle according to claim 24, characterized in that, Motor vehicles are passenger vehicles.

26. The motor vehicle according to claim 24, characterized in that, Fuel cells are used to power electric motors.

27. A method for operating a motor vehicle according to claim 24, characterized in that, Switch the mixing equipment (400; 500; 600) to the first operating state and the second operating state.

28. The method according to claim 27, characterized in that, Switch the mixing device to at least one third operating state.

29. The method according to claim 28, characterized in that, This allows the mixing equipment to switch between multiple third operating states within the third operating state.

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