THERMAL MANAGEMENT SYSTEM FOR A VEHICLE

Description

[0001] The present invention relates to a thermal management system for a vehicle, in particular a motor vehicle, such as an electric, hybrid or hydrogen vehicle.

[0002] Such vehicles have an electric drive motor, a battery, and power electronics such as an inverter. A thermal management system, which includes one or more cooling circuits for the electric drive motor, battery, and power electronics, ensures that the operating temperatures of these components remain within predefined temperature ranges to prevent damage and / or performance loss.

[0003] EP 3 689 647 A1 relates to a thermal management system for motor vehicles and a motor vehicle with this system, wherein the thermal management system comprises: a first battery heating circuit which uses a heat source provided by a heater and carries out heat exchange between water via a heat exchanger to heat a traction battery; a second battery heating circuit which uses a heat source generated by a drive motor and carries out heat exchange between water via the heat exchanger to heat the traction battery; a first battery cooling circuit for cooling the traction battery when a water temperature at an inlet of the traction battery is detected as being less than or equal to a predetermined temperature threshold;and a second battery cooling circuit which, when the water temperature at the inlet of the traction battery is detected as being greater than the specified temperature threshold, uses a coolant supplied by a condenser in a passenger compartment cooling circuit to carry out a heat exchange between the water and the coolant via the heat exchanger which is connected to the passenger compartment cooling circuit and shared with the battery circuits, in order to cool the traction battery.

[0004] DE10 2020 112 798 A1 relates to an electric vehicle temperature control system comprising: an air conditioning refrigerant circuit with a compressor that compresses a refrigerant, an air conditioning evaporator provided upstream of the compressor, and an air-cooled condenser that condenses the refrigerant flowing from the compressor with outside air; a battery cooling circuit with a battery evaporator and configured to allow coolant flowing to cool a main battery; an electrical component cooling circuit provided separately from the battery cooling circuit and comprising an electrical component cooler; a first switching unit configured to perform switching between connecting and disconnecting the battery cooling circuit and the electrical component cooling circuit;and an engine cooling circuit that is provided and configured separately from the battery cooling circuit and the electrical component cooling circuit to allow the coolant that cools an engine to flow.

[0005] One object of an embodiment of the present invention is to provide an improved thermal management system for a vehicle.

[0006] This problem is solved by a thermal management system for a vehicle with the features of claim 1. Claim 12 protects a vehicle with such a thermal management system.

[0007] According to one aspect of the present invention, a thermal management system for a vehicle, in particular for a motor vehicle such as an electric, hybrid or hydrogen vehicle, comprises: a coolant circuit with a coolant pump for circulating a coolant, in particular oil, in the coolant circuit for cooling a brake, in particular a multi-disc brake, and / or a component, in particular a rotor, an electric drive motor of the vehicle and / or a transmission, in particular a reduction gear of the vehicle; a heat transfer medium circuit with at least one heat transfer medium pump for circulating a heat transfer medium, in particular water, in the heat transfer medium circuit for cooling and / or heating a battery and / or power electronics and / or a charger and / or another component, in particular a stator, of the electric drive motor of the vehicle and / or an interior of the vehicle, in particular by means of a heat exchanger; and a heat exchanger for exchanging heat between the coolant in the coolant circuit and the heat transfer medium in the heat transfer medium circuit.

[0008] In one design, this allows the heat absorbed or dissipated by the coolant from the brakes and / or the electric drive motor component and / or the transmission to be transferred via the heat exchanger to the heat transfer medium and from there, in particular, to the battery and / or into the vehicle interior. In this way, one design eliminates the need for a separate heating element, such as a PCT heating element typically used in a vehicle's air conditioning system, for heating the interior, and / or another separate heating element, for example, also a PCT heating element, typically used for battery temperature control.

[0009] According to one embodiment, the thermal management system further comprises at least one temperature sensing unit configured to detect the interior temperature of the vehicle and / or the battery temperature, at least one multi-way valve through which the quantity of heat transfer fluid supplied to the battery and / or the power electronics and / or the charger and / or the other component of the vehicle's electric drive motor and / or the heat exchanger can be adjusted, and a control unit configured to actuate the at least one multi-way valve such that the heat transfer fluid is supplied to the battery when the battery temperature is below a predetermined battery temperature threshold, and / or to actuate the at least one multi-way valve such thatthat the heat transfer fluid is pumped to the heat exchanger when the indoor temperature is lower than a predetermined indoor temperature threshold.

[0010] In one version, this allows the battery to be heated by utilizing the heat transferred to the heat transfer medium if the battery temperature falls below the (lower) battery temperature threshold required for safe operation. Additionally or alternatively, in another version, this allows the vehicle interior to be heated by utilizing the heat transferred to the heat transfer medium if the interior temperature falls below a predetermined (lower) interior temperature threshold, which can be set, for example, via the air conditioning system.

[0011] According to one design, the control unit is configured to activate the brakes during a braking process of the vehicle in order to slow the vehicle down by applying the brakes if the battery temperature is lower than the specified battery temperature threshold and / or the interior temperature is lower than the specified interior temperature threshold.

[0012] The control unit is preferably further configured to control the coolant pump during the braking process in such a way that it pumps the coolant in the coolant circuit in order to dissipate heat from the brake and / or the component of the electric drive motor of the vehicle and / or the transmission of the vehicle in an improved manner, and to control the at least one heat transfer fluid pump in such a way that it pumps the heat transfer fluid during the braking process in order to ensure a transfer of heat from the coolant to the heat transfer fluid.

[0013] In one version, the heat generated in the brake during the braking process can be dissipated and used to heat the battery and / or the interior.

[0014] According to one embodiment, the electric drive motor can be operated in an electric motor mode, in which the vehicle is driven or in which the electric drive motor is in idle mode, and in a generator mode, in which energy is recuperated and fed back into the battery, adjustable by the control unit, and the control unit is configured to activate the brake during the braking process of the vehicle in order to decelerate the vehicle by applying the brake, and to set the electric motor mode of the electric drive motor when the battery temperature is less than the specified (lower) battery temperature threshold and / or the interior temperature is less than the specified (lower) interior temperature threshold.

[0015] This means that, for example, in the case of a cold start of the vehicle, when the battery temperature and / or the interior temperature is low, essentially all the energy required for the braking process by the vehicle can be used to heat the battery and / or the interior.

[0016] According to one embodiment, at least one temperature sensing unit is further configured to detect the temperature of the heat transfer medium, the control unit is configured to determine the required heat output for heating the battery and / or the interior of the vehicle, to detect the position of the vehicle's accelerator pedal, to determine a torque requirement for the electric drive motor based on the position of the accelerator pedal, to control the brake in such a way that it performs a braking process with a predetermined braking torque calculated based on the required heat output, and to control the electric drive motor in such a way that it generates a torque based on the torque requirement and the braking torque when the heat transfer medium temperature is less than a predetermined heat transfer medium temperature threshold.

[0017] Here, the braking torque, calculated based on the required heat output, can be determined as a function of the current rotational speed of a wheel of the vehicle. This calculated braking torque is then divided by the transmission ratio and added to the driver's torque demand, determined by the accelerator pedal position, to obtain the torque to be generated by the electric drive motor. If the vehicle has multiple brakes, particularly multi-disc brakes, the calculated braking torque can be divided by the number of brakes, and the result applied to each brake. For example, if there is one brake on the left side of the vehicle and one on the right side, the calculated braking torque is applied equally to each brake.

[0018] Furthermore, the control unit can be configured in particular to control the electric drive motor in such a way that it generates a torque equal to the sum of the torque requirement and the braking torque when the heat transfer medium temperature is less than a predetermined heat transfer medium temperature threshold.

[0019] In one design, this allows heat to be dissipated from the brakes through active braking, even if the vehicle or its speed is not reduced, and used to warm the battery and / or the interior.

[0020] According to one design, the control unit is configured to determine the current braking performance of the brake and to adjust the flow rate of the coolant through the coolant pump depending on the current braking performance.

[0021] In one implementation, for example, increasing the flow rate during increased braking performance can improve heat dissipation by the coolant while simultaneously protecting the brake from overheating.

[0022] According to one embodiment, the thermal management system further comprises an input temperature sensor, which is configured to detect an input temperature of the coolant upstream of the brake, and an output temperature sensor, which is configured to detect an output temperature of the coolant downstream of the brake, wherein the control unit is configured to adjust the flow rate of the coolant by the coolant pump depending on the current braking power and a difference between the difference between the output temperature and the input temperature and the specified difference temperature threshold when a difference between the output temperature and the input temperature exceeds a predetermined differential temperature threshold.

[0023] In one version, this allows the flow rate of the coolant to be increased, in particular if the difference between the output temperature and the input temperature exceeds the specified differential temperature threshold, in order to prevent the brake from overheating.

[0024] According to one embodiment, the thermal management system further comprises an additional heat exchanger for discharging heat to the vehicle's environment, wherein the quantity of heat transfer fluid to the additional heat exchanger can be adjusted by means of at least one multi-way valve, and the control unit is configured to control the at least one multi-way valve in such a way that the heat transfer fluid is transferred to the additional heat exchanger when the heat transfer fluid temperature is greater than the predetermined heat transfer fluid temperature threshold, and to set the generator mode of the electric drive motor during the braking process.

[0025] In one version, for example, in a case where the battery and / or the interior do not need to be heated, the heat generated in the brake during the braking process can be released to the vehicle's surroundings via the additional heat exchanger.

[0026] Furthermore, by setting the generator mode of the electric drive motor during the braking process, it can be ensured that the brake does not need to be applied or only to a small extent, since the braking effect of the generator mode or the braking torque caused by the generator mode is sufficient for this purpose or is added to the braking effect of the brake, thus largely avoiding a further increase in the heat transfer fluid temperature, while at the same time energy can be recovered by means of the generator mode.

[0027] According to one embodiment, the control unit is designed to activate the brake in order to further decelerate the vehicle by applying the brakes if the heat transfer fluid temperature is greater than the specified heat transfer fluid temperature threshold, and a braking torque required for the braking process is greater than a braking torque that can be generated by the generator mode during the braking process.

[0028] This allows the braking process to be carried out with the required braking torque in one configuration, especially when the braking torque required for the braking process cannot be generated by the generator mode or cannot be generated continuously, such as during a prolonged downhill run of the vehicle, as this would cause the electric drive motor to overheat.

[0029] According to one embodiment, the thermal management system further comprises a coolant circuit multi-way valve by which a ratio between a coolant quantity used for cooling the brake and a coolant quantity used for cooling the component and / or the transmission can be adjusted, and at least one temperature sensing device for detecting a temperature of the component and / or a temperature of the transmission, wherein the control unit is configured to additionally adjust the coolant delivery rate by the coolant pump depending on the temperature of the component and / or the temperature of the transmission.and to adjust the ratio between the amount of coolant used to cool the brake and the amount of coolant used to cool the component and / or the transmission, based on the temperature of the component and / or the temperature of the transmission and the difference between the difference between the output temperature and the input temperature and the specified differential temperature threshold.

[0030] This allows the coolant quantities / flows used for cooling the brake, the component, and / or the transmission to be individually adjusted as needed in one version.

[0031] According to one explanation, the thermal management system also features: a cooling circuit with an evaporator for cooling the interior of the vehicle, a condenser and a compressor for circulating another heat medium in the cooling circuit, and another heat exchanger for exchanging heat between the heat medium in the heating medium circuit and the other heat medium in the cooling circuit.

[0032] In this case, the cooling circuit can be formed in particular by the refrigeration circuit of the vehicle's air conditioning system, whereby heat can be transferred from the battery via the heat transfer medium and the further heat transfer medium to the further heat transfer medium in order to cool the battery if the battery temperature is greater than a predetermined upper battery threshold.

[0033] According to another aspect of the invention, a vehicle, in particular a motor vehicle, has a thermal management system as described above.

[0034] Further advantages and features will become apparent from the dependent claims and the exemplary embodiments. These are shown, in part schematically: Fig. 1 shows a vehicle with a thermal management system according to an embodiment of the invention, and Fig. 2 shows a thermal management system according to an embodiment of the invention.

[0035] Fig. 1 shows a vehicle with a thermal management system according to an embodiment of the invention, and Fig. 2 shows details of the in Fig. 1 thermal management system shown.

[0036] The vehicle 200, in particular an electric, hybrid or hydrogen vehicle, has a thermal management system 100 with a control unit 110, a brake 201, in particular a multi-disc brake for braking the vehicle 200, a battery 202, power electronics 203, in particular an inverter, a charger 204 for charging the battery 202, an accelerator pedal 205, an electric drive motor 210 with a component 211, in particular a rotor, and another component 212, in particular a stator, a transmission 214, in particular a reduction transmission for coupling the rotor 211 with a drive shaft of the vehicle 200 (not shown) coupled to the wheels of the vehicle 200, at least one temperature sensing unit 700, an input temperature sensor 701, an output temperature sensor 702, and at least one temperature sensing device 703.

[0037] The thermal management system 100 has a coolant circuit 300 with a coolant pump 301 for pumping a coolant, in particular oil, in the coolant circuit 300 for cooling and / or lubricating the brake 201 and / or the component 211 of the electric drive motor 210 of the vehicle 200 and / or the transmission 214 of the vehicle 200, a filter 303, in particular an oil filter for filtering the coolant and a sump 304, in particular an oil sump, for the coolant.

[0038] Furthermore, the thermal management system 100 has a heat medium circuit 400 with at least one heat medium pump 401, 402, 403 for conveying a heat medium, in particular water, in the heat medium circuit 400 for cooling and / or heating the battery 202 and / or the power electronics 203 and / or the charger 204 and / or the other component 212 of the electric drive motor 210 of the vehicle 200 and / or an interior of the vehicle 200, in particular by means of a heat exchanger 213, and a heat exchanger 600 for exchanging heat between the coolant in the coolant circuit 300 and the heat medium in the heat medium circuit 400.

[0039] Here, at least one temperature sensing unit 700 is configured to detect an interior temperature of the interior of the vehicle 200 and / or a battery temperature of the battery 202, wherein a quantity of heat transfer medium to the battery 202 can be adjusted by means of a multi-way valve 121, a quantity of heat transfer medium to the power electronics 203 and a quantity of heat transfer medium to the other component 212 of the electric drive motor 210 of the vehicle 200 can be adjusted by means of a multi-way valve 120, and a quantity of heat transfer medium to the heat exchanger 213 can be adjusted by means of a multi-way valve 122.

[0040] The control unit 110 is configured to control the multi-way valve 121 in such a way that the heat transfer medium is supplied to the battery 202 when the battery temperature is less than a predetermined battery temperature threshold, and / or to control the multi-way valve 122 in such a way that the heat transfer medium is supplied to the heat exchanger 213 when the interior temperature is less than a predetermined interior temperature threshold.

[0041] In this case, the control unit 110 is specifically designed to activate the brake 201 during a braking process of the vehicle 200, in order to decelerate the vehicle 200 by actuating the brake 201 if the battery temperature is less than the specified battery temperature threshold and / or the interior temperature is less than the specified interior temperature threshold.

[0042] The electric drive motor 210 can be operated in an electric motor mode, in which the vehicle 200 is driven or the electric drive motor 210 is idling, and in a generator mode, in which energy is recovered through recuperation and the recuperated energy is fed back into the battery 202, adjustable by the control unit 110. The control unit 110 is configured to actuate the brake 201 during the braking process of the vehicle 200 in order to decelerate the vehicle 200 by applying the brake 201, and to set the electric motor mode of the electric drive motor 210 if the battery temperature is lower than the specified battery temperature threshold and / or the interior temperature is lower than the specified interior temperature threshold.

[0043] The at least one temperature sensing unit 700 is further configured to detect a heat transfer medium temperature, wherein the control unit 110 is configured to determine a required heat output for heating the battery 202 and / or the interior of the vehicle 200, to detect a position of the accelerator pedal 205 of the vehicle 200, to determine a torque requirement to the electric drive motor 210 requested by the driver based on the position of the accelerator pedal 205, to control the brake 201 in such a way that it performs a braking operation with a predetermined braking torque calculated on the basis of the required heat output, and to control the electric drive motor 210 in such a way that it generates a torque which is based on the torque requirement and the braking torque when the heat transfer medium temperature is less than a predetermined heat transfer medium temperature threshold.

[0044] Here, the braking torque, calculated based on the required heat output, can be determined as a function of the current rotational speed of a wheel of the vehicle 200. The calculated braking torque is then divided by the gear ratio of the transmission 214 and added to the torque demand of the driver, determined by the position of the accelerator pedal 205, to obtain the torque to be generated by the electric drive motor 210. If the vehicle 200 has several brakes 201, in particular multi-disc brakes, the calculated braking torque can be divided by the number of brakes 201, and the result implemented in each brake 201. For example, if one brake 201 is provided on a wheel on the left side of the vehicle 200 and one brake on a wheel on the right side of the vehicle 200, half of the calculated braking torque is implemented in each of the two brakes 201.

[0045] The control unit 110 is specifically designed to determine the current braking performance of the brake 201 and to adjust the flow rate of the coolant through the coolant pump 301 depending on the current braking performance.

[0046] The input temperature sensor 701 is configured to detect the coolant input temperature upstream of the brake 201, and the output temperature sensor 702 is configured to detect the coolant output temperature downstream of the brake 201. The control unit 110 is configured, when the difference between the output temperature and the input temperature exceeds a predetermined differential temperature threshold, to adjust the coolant delivery rate by the coolant pump 301 depending on the current braking force and the difference between the output temperature and the input temperature and the predetermined differential temperature threshold.

[0047] The thermal management system 100 further comprises an additional heat exchanger 405, in particular a radiator, for dissipating heat to the vehicle's environment 200, wherein the quantity of heat transfer fluid supplied to the additional heat exchanger 405 can be adjusted by means of the multi-way valve 123. The control unit 110 is configured to actuate the multi-way valve 123 such that the heat transfer fluid is supplied to the additional heat exchanger 405 when the heat transfer fluid temperature exceeds the predetermined heat transfer fluid temperature threshold, and to activate the generator mode of the electric drive motor 210 during braking.

[0048] The control unit 110 is specifically designed to control the brake 201 in order to decelerate the vehicle 200 by actuating the brake 201 in addition to deceleration by operating the electric drive motor 210 in generator mode, if the heat medium temperature is greater than the specified heat medium temperature threshold and a braking torque required for the braking process is greater than a braking torque that can be generated by the generator mode during the braking process or a braking torque which, if continuously generated by the generator mode, would lead to overheating of the electric drive motor 210.

[0049] The thermal management system 100 further comprises a coolant circuit multi-way valve 302, by which a ratio between a coolant quantity used for cooling the brake 201 and a coolant quantity used for cooling the component 211 and / or the transmission 214 can be adjusted, wherein the at least one temperature sensing device 703 is configured to detect a temperature of the component 211 and / or a temperature of the transmission 214.

[0050] The control unit 110 is configured to adjust the coolant delivery rate through the coolant pump 301 additionally depending on the temperature of component 211 and / or the temperature of the transmission 214, and to adjust the ratio between the amount of coolant used to cool the brake 201 and the amount of coolant used to cool component 211 and / or the transmission 214 based on the temperature of component 211 and / or the temperature of the transmission 214 and the difference between the difference between the output temperature and the input temperature and the specified differential temperature threshold.

[0051] The thermal management system 100 further comprises a cooling circuit 800, in particular an air conditioning system of the vehicle 200, with an evaporator 801 for cooling the interior of the vehicle 200, condensers 802A, 802B, expansion valves 805, 806 and 807, and a compressor 803 for supplying a further heat medium in the cooling circuit 800, and a further heat exchanger 900 for exchanging heat between the heat medium in the heat medium circuit 400 and the further heat medium in the cooling circuit 800.

[0052] This can be done, as in Fig. 2 This illustrates that the heat medium of the heat medium circuit 400 is also conveyed to the condenser 802A by the heat medium pump 403. Reference symbol list

[0053] 100 Thermal management system 110 Control unit 120, 121, 122 Multi-way valve 200 Vehicle 201 Brake 202 Battery 203 Power electronics 204 Charger 205 Accelerator pedal 210 Electric drive motor 211 One component of the electric drive motor 212 Another component of the electric drive motor 213 Heat exchanger 214 Transmission 300 Coolant circuit 301 Coolant pump 302 Coolant circuit multi-way valve 303 Oil filter 304 Oil sump 400 Heat exchanger circuit 401, 402, 403 Heat pump 405 Another heat exchanger 600 Heat transfer unit 700 Temperature sensing unit 701 Inlet temperature sensor 702 Outlet temperature sensor 703 Temperature sensing device 800 Cooling circuit 801 Evaporator 802A, 802B Condenser 803 Compressor 804, 805, 806, 807 Expansion valve 900 Additional heat exchanger

Claims

1. A thermal management system (100) for a vehicle (200), comprising: a coolant circuit (300) comprising a coolant pump (301) for pumping a coolant in the coolant circuit (300) for cooling a brake (201), in particular a multi-disc brake, and / or a component (211) of an electric drive motor (210) of the vehicle (200) and / or a transmission (214), in particular a reduction gearing, of the vehicle (200), a heating medium circuit (400) with at least one heating medium pump (401, 402, 403) for pumping a heating medium in the heating medium circuit (400) for cooling and / or heating a battery (202) and / or power electronics (203) and / or a charging device (204) and / or a further component (212) of the electric drive motor (210) of the vehicle (200) and / or an interior of the vehicle (200), in particular by means of a heat exchanger (213), and a heat exchanger (600) for exchanging heat between the coolant in the coolant circuit (300) and the heating medium in the heating medium circuit (400).

2. The thermal management system (100) according to claim 1, further comprising at least one temperature detection unit (700) configured to detect an interior temperature of the interior of the vehicle (200) and / or a battery temperature of the battery (202), at least one multi-way valve (120, 121, 122) via which a quantity of heating medium pumped to the battery (202) and / or a quantity of heating medium pumped to the power electronics (203) and / or a quantity of heating medium pumped to the charging device (204) and / or a quantity of heating medium pumped to the further component (212) of the electric drive motor (210) of the vehicle (200) and / or a quantity of heating medium pumped to the heat exchanger (213) can be set, and a control unit (110) configured to control the at least one multi-way valve (121) such that the heating medium is pumped to the battery (202) if the battery temperature is less than a specified battery temperature threshold, and / or to control the at least one multi-way valve (122) such that the heating medium is pumped to the heat exchanger (213) if the interior temperature is less than a specified interior temperature threshold.

3. The thermal management system (100) according to claim 2, wherein the control unit (110) is configured to control the brake (201) during a braking process of the vehicle (200) in order to decelerate the vehicle (200) by actuating the brake (201) if the battery temperature is less than the specified battery temperature threshold and / or the interior temperature is less than the specified interior temperature threshold.

4. The thermal management system (100) according to claim 3, wherein the electric drive motor (210) can be operated in an electric motor mode and in a generator mode, which can be set by the control unit (110), and the control unit (110) is configured to control the brake (201) during the braking process of the vehicle (200) in order to decelerate the vehicle (200) by actuating the brake (201), and to set the electric motor mode of the electric drive motor (210) if the battery temperature is less than the specified battery temperature threshold and / or the interior temperature is less than the specified interior temperature threshold.

5. The thermal management system (100) according to claim 4, wherein the at least one temperature detection unit (700) is further configured to detect a heating medium temperature of the heating medium, the control unit (110) is configured to determine a required heat output for heating the battery (202) and / or the interior of the vehicle (200), to detect a position of an accelerator pedal (205) of the vehicle (200), to determine a torque requirement for the electric drive motor (210) based on the position of the accelerator pedal (205), to control the brake (201) such that it performs a braking process with a specified braking torque calculated on the basis of the required heat output, and to control the electric drive motor (210) such that it generates a torque which is based on the torque requirement and the braking torque if the heating medium temperature is less than a specified heating medium temperature threshold.

6. The thermal management system (100) according to claim 5, wherein the control unit (110) is configured to determine a current braking power of the brake (201) and to set a pumping quantity of coolant via the coolant pump (301) depending on the current braking power.

7. The thermal management system (100) according to claim 6, further comprising an input temperature sensor (701) which is configured to detect an input temperature of the coolant upstream of the brake (201), and an output temperature sensor (702) which is configured to detect an output temperature of the coolant downstream of the brake (201), wherein the control unit (110) is configured to set the pumping quantity of coolant via the coolant pump (301) depending on the current braking power and a difference between the difference between the output temperature and the input temperature and the specified temperature difference threshold if a difference between the output temperature and the input temperature exceeds a specified temperature difference threshold.

8. The thermal management system (100) according to claim 6 or 7, further comprising a further heat exchanger (405) for discharging heat to an environment of the vehicle (200), wherein a quantity of heating medium pumped to the further heat exchanger (405) can be set by means of the at least one multi-way valve (123), and the control unit (110) is configured to control the at least one multi-way valve (123) such that the heating medium is pumped to the further heat exchanger (405) if the heating medium temperature is greater than the specified heating medium temperature threshold, and to set the generator mode of the electric drive motor (210) during the braking process.

9. The thermal management system (100) according to claim 8, wherein the control unit (110) is configured to control the brake (201) in order to additionally decelerate the vehicle (200) by actuating the brake (201) if the heating medium temperature is greater than the specified heating medium temperature threshold and a braking torque required for the braking process is greater than a braking torque that can be generated by the generator mode during the braking process.

10. The thermal management system (100) according to any one of claims 6 to 9, further comprising a coolant circuit multi-way valve (302) via which a ratio between a coolant quantity used for cooling the brake (201) and a coolant quantity used for cooling the component (211) and / or the transmission (214) can be set, and at least one temperature detection device (703) for detecting a temperature of the component (211) and / or a temperature of the transmission (214), wherein the control unit (110) is configured to additionally set the coolant pumping quantity via the coolant pump (301) depending on the temperature of the component (211) and / or the temperature of the transmission (214), and to adjust the ratio between the coolant quantity used for cooling the brake (201) and the coolant quantity used for cooling the component (211) and / or the transmission (214) based on the temperature of the component (211) and / or the temperature of the transmission (214) and the difference between the difference between the output temperature and the input temperature and the specified temperature difference threshold.

11. The thermal management system (100) according to any one of the preceding claims, further comprising: a cooling circuit (800) having an evaporator (801) for cooling the interior of the vehicle (200), a condenser (802A, 802B) and a compressor (803) for pumping a further heating medium in the cooling circuit (800), and a further heat exchanger (900) for exchanging heat between the heating medium in the heating medium circuit (400) and the further heating medium in the cooling circuit (800).

12. A vehicle (200), in particular a motor vehicle, comprising a thermal management system (100) according to any one of the preceding claims.