Cooling and / or heating system for a vehicle and operating method for a cooling and / or heating system of a vehicle
The control module optimizes heat transfer in vehicle cooling and heating systems by adjusting flow rate and temperature based on a heat transfer criterion, addressing inefficiencies in indirect systems and enhancing energy efficiency.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- BAYERISCHE MOTOREN WERKE AG
- Filing Date
- 2025-10-10
- Publication Date
- 2026-05-21
AI Technical Summary
Existing indirect cooling and heating systems in electric vehicles face inefficiencies due to saturation states in heat exchangers, leading to minimal heat output increases with higher flow rates and disproportionate energy consumption.
A control module adjusts the flow rate and supply temperature of the first heat transfer medium in a heat exchanger based on a heat transfer criterion, increasing efficiency by optimizing heat transfer performance.
Enhances heat transfer efficiency and reduces energy consumption by dynamically controlling flow rate and temperature, improving the overall performance of the cooling and heating system.
Smart Images
Figure DE2025100957_21052026_PF_FP_ABST
Abstract
Description
[0001] 24-1220
[0002] Cooling and / or heating system for a vehicle and operating procedures for a cooling and / or heating system of a vehicle
[0003] The present disclosure relates to a cooling and / or heating system for a vehicle, a vehicle with such a cooling and / or heating system, an operating method for a cooling and / or heating system of a vehicle, and a storage medium for executing the operating method. The present disclosure relates in particular to a transient control of a heat exchanger, such as a water-cooled condenser, in an indirect cooling and / or heating system.
[0004] State of the art
[0005] Electric vehicles often use so-called indirect cooling and / or heating systems. In an indirect cooling and / or heating system, heat is not exchanged with the environment, but rather via an intermediate medium, usually a secondary coolant. The indirect cooling and / or heating system typically consists of two separate circuits, generally referred to as the primary circuit and the secondary circuit. A refrigerant circulates in the primary circuit. The secondary circuit contains a coolant that exchanges heat with the primary circuit in a heat exchanger and is transported to the parts of the vehicle where cooling or heating is required – such as the high-voltage battery in electric vehicles or other components that need to be cooled or heated.
[0006] To increase the heat transfer efficiency between the coolant and the refrigerant, the flow rate of the coolant through the heat exchanger can be increased, for example. However, this can lead to a saturation state of the heat exchanger, where a further increase in flow rate results in only a minimal increase in the transferred heat output. This can impair the efficiency of the heat exchanger and lead to disproportionately high energy consumption.
[0007] 07.11.2024 24-1220
[0008] Disclosure of the invention
[0009] It is an object of the present disclosure to specify a cooling and / or heating system for a vehicle, a vehicle with such a cooling and / or heating system, an operating method for a cooling and / or heating system of a vehicle, and a storage medium for carrying out the operating method, all of which can efficiently increase the heat transfer performance between heat transfer media in a heat exchanger. In particular, it is an object of the present disclosure to improve the energy efficiency of a cooling and / or heating system.
[0010] This problem is solved by the subject matter of the independent claims. Advantageous embodiments are specified in the dependent claims.
[0011] According to an independent aspect of the present disclosure, a cooling and / or heating system for a vehicle, in particular a hybrid or electric vehicle, is specified. The cooling and / or heating system comprises:
[0012] at least one heat exchanger with a primary side and a secondary side, wherein the primary side can be supplied with a first heat transfer medium and the secondary side with a second heat transfer medium to be cooled; and at least one control module which is configured to set, depending on a heat transfer criterion, either a flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger or a supply temperature of the first heat transfer medium in order to remove heat from the second heat transfer medium.
[0013] According to the invention, control is based on a heat transfer criterion. For example, the current heat transfer property of the heat exchanger can be compared in real time with an optimal heat transfer property, which is defined as the heat transfer criterion. Up to this heat transfer criterion, only the flow rate of the first heat transfer medium is increased to improve performance. If the
[0014] 07.11.2024 24-1220
[0015] To increase heat dissipation beyond the heat transfer criterion, the flow temperature of the first heat transfer medium can be lowered. This allows the heat transfer performance between the heat transfer media in the heat exchanger to be efficiently increased, thus improving the energy efficiency of the cooling and / or heating system.
[0016] The at least one control module can implement software components / algorithms that are set up to run on at least one processor and thereby perform the functionalities of the at least one control module.
[0017] Preferably, the cooling and / or heating system comprises at least one pump for the first heat transfer medium. This at least one pump can, for example, be a coolant pump. The at least one control module can be configured to control the at least one pump, depending on the heat transfer criterion, in order to regulate the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger.
[0018] Preferably, the cooling and / or heating system comprises at least one cooling mechanism for the first heat transfer medium. This at least one cooling mechanism can, for example, include a fan. The at least one control module can be configured to control the at least one cooling mechanism, depending on the heat transfer criterion, in order to adjust the supply temperature of the first heat transfer medium.
[0019] Preferably, the at least one heat exchanger is a condenser. However, the present disclosure is not limited to this and the at least one heat exchanger can also be an evaporator.
[0020] Preferably, the condenser is a water-cooled condenser (WCC). This plate heat exchanger, for example in the form of a
[0021] 07.11.2024 24-1220
[0022] In some embodiments, a counterflow heat exchanger can be supplied with coolant on one side (primary side) and with refrigerant on the other side (secondary side).
[0023] The primary and secondary sides of the heat exchanger denote two separate areas in which the respective heat transfer media flow and exchange heat without coming into direct contact with each other. Within the scope of this disclosure, the terms "primary side" and "secondary side" are used solely to distinguish between the two separate areas, irrespective of which heat transfer medium supplies heat to the heat exchanger and which heat transfer medium absorbs heat.
[0024] The term "heat transfer medium," as used in this disclosure, refers to a substance that transports heat from one place to another by flowing through the heat exchanger and absorbing or releasing thermal energy there. A heat exchanger typically involves two heat transfer media, flowing on the primary and secondary sides and in thermal, but not physical, contact with each other. The heat transfer media can be liquid or gaseous and serve to efficiently transfer heat between different parts of the system without the media mixing.
[0025] Preferably, the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger is a mass flow rate or volume flow rate of the first heat transfer medium. The mass flow rate indicates the mass of the first heat transfer medium flowing through the primary side of the at least one heat exchanger per unit of time. The volume flow rate indicates the volume of the first heat transfer medium flowing through the primary side of the at least one heat exchanger per unit of time.
[0026] 07.11.2024 24-1220
[0027] The inlet temperature of the first heat transfer medium refers to the temperature that the first heat transfer medium has when entering the at least one heat exchanger.
[0028] Preferably, the at least one control module is configured to either increase the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger, or to reduce the supply temperature of the first heat transfer medium, depending on the heat transfer criterion, in order to dissipate heat from the second heat transfer medium. Increasing the flow rate of the first heat transfer medium through the primary side and reducing the supply temperature of the first heat transfer medium can each be used to increase the heat transfer efficiency between the first and second heat transfer media.
[0029] Preferably, the first heat transfer medium is a coolant of a cooling circuit of the cooling and / or heating system.
[0030] Preferably, the first heat transfer medium, in particular the coolant, is selected from the group comprising or consisting of water, ethylene glycol, propylene glycol and water mixtures with additives (e.g. corrosion protection).
[0031] Preferably, the second heat transfer medium is a refrigerant from a refrigeration cycle of the cooling and / or heating system.
[0032] Preferably, the second heat transfer medium, in particular the refrigerant, is selected from or consists of the group comprising R-134a (tetrafluoroethane), R-1234yf (HFO-1234yf), CO2 (carbon dioxide, R-744) and propane.
[0033] 07.11.2024 24-1220
[0034] Preferably, the cooling and / or heating system is an indirect cooling and / or heating system.
[0035] Preferably, the indirect cooling and heating system comprises at least one primary circuit and at least one secondary circuit. The refrigerant circulates in the at least one primary circuit, while the coolant circulates in the at least one secondary circuit, exchanging heat with the at least one primary circuit and being transported to the areas in the vehicle where cooling or heating is required – such as the drive energy storage system in hybrid or electric vehicles or other components to be cooled or heated.
[0036] Within the scope of this disclosure, the terms "refrigerant" and "refrigeration circuit" may be used when referring to the at least one primary circuit. Conversely, the terms "coolant" and "cooling circuit" may be used when referring to the at least one secondary circuit.
[0037] In the embodiments of the present disclosure, the at least one primary circuit is connected to or runs through the secondary side of the at least one heat exchanger, and the at least one secondary circuit is connected to or runs through the primary side of the at least one heat exchanger. As already explained, the terms "primary side" and "secondary side" of the heat exchanger are used solely to distinguish the two separate areas of the heat exchanger, irrespective of which heat transfer medium supplies heat to the heat exchanger and which heat transfer medium absorbs heat.
[0038] Preferably, the heat transfer criterion relates to a heat transfer property of the at least one heat exchanger. The heat transfer property describes the ability of the at least one
[0039] 07.11.2024 24-1220
[0040] Heat exchanger: to transfer heat from one heat transfer medium to another heat transfer medium.
[0041] Preferably, the heat transfer criterion is a setpoint for the heat transfer property. The setpoint can, for example, be a substantially optimal heat transfer property (e.g., a substantially optimal value of the heat transfer property), but the present disclosure is not limited to this.
[0042] Preferably, the setpoint for the heat transfer property is an empirically determined setpoint. The setpoint can be determined, for example, depending on the type of heat exchanger, its operating state, environmental factors, etc.
[0043] Preferably, the heat transfer criterion (and thus also the heat transfer property) includes or relates to a heat transfer coefficient k. The heat transfer coefficient k, also known as the heat transfer coefficient or U-value, describes the efficiency with which heat passes through an exchange surface A of the heat exchanger. In particular, it indicates how much heat per unit of time is transferred through an area of 1 square meter at a temperature difference of 1 Kelvin between the primary and secondary sides of the heat exchanger.
[0044] Preferably, the heat transfer criterion (and thus also the heat transfer property) is a product of the heat transfer coefficient k and the exchange surface A of the at least one heat exchanger (“kA criterion”).
[0045] Preferably, the heat transfer criterion depends on the flow rate of the second heat transfer medium through the secondary side, or is selected or set depending on the flow rate of the second heat transfer medium through the secondary side. The flow rate of the second heat transfer medium can be a mass flow rate or a volume flow rate. This allows for
[0046] 07.11.2024 24-1220
[0047] Different mass flows require different heat transfer criteria, such as kA criteria.
[0048] Preferably, the at least one control module is configured to increase the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger at least until the heat transfer criterion is met; and to reduce, or initiate the reduction of, the supply temperature of the first heat transfer medium when the heat transfer criterion is met. This allows for an increase in performance solely by increasing the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger, as long as the heat transfer criterion is not met, e.g., as long as the current heat transfer characteristic is lower than the setpoint. If the current heat transfer characteristic reaches or exceeds the setpoint, the supply temperature of the first heat transfer medium can be reduced to increase performance instead of increasing the flow rate.
[0049] Preferably, at least one control module is configured to further increase the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger and to initiate a reduction in the supply temperature of the first heat transfer medium during a transition period after the heat transfer criterion has been reached. This allows the performance increase to be achieved by increasing the flow rate even after the heat transfer criterion has been met, as long as the reduction in the supply temperature has already been initiated (e.g., by switching on a fan), but has not yet taken effect due to a certain start-up time or latency.
[0050] Preferably, the transition time window between reaching the heat transfer criterion and the effectiveness of reducing the flow temperature is defined. Effectiveness can refer to a point in time at which the flow temperature begins to decrease or has already reached a reduced setpoint.
[0051] 07.11.2024 24-1220
[0052] Preferably, the at least one control module is configured to reduce the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger after the transition period window, for example to adjust the heat transfer property to the setpoint, such as the optimal value explained above, and in particular to reduce it.
[0053] According to another independent aspect of the present disclosure, a vehicle, in particular a motor vehicle, is specified. The vehicle comprises the cooling and / or heating system according to the embodiments of the present disclosure.
[0054] The term "vehicle" includes cars, trucks, vans, buses, motorhomes, motorcycles, etc., used for the transport of people, goods, etc. In particular, the term includes motor vehicles for passenger transport.
[0055] Depending on the embodiment, the hybrid or electric vehicle can be a pure electric vehicle (BEV) or a plug-in hybrid vehicle (PHEV).
[0056] According to another independent aspect of the present disclosure, an operating method for a cooling and / or heating system of a vehicle, in particular a hybrid or electric vehicle, is specified. The operating method comprises:
[0057] Increasing the flow rate of a first heat transfer medium through a primary side of at least one heat exchanger in order to remove heat from a second heat transfer medium to be cooled on a secondary side of the at least one heat exchanger;
[0058] Determine whether a heat transfer criterion has been met; and reduce the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger and the supply temperature of the first heat transfer medium when the heat transfer criterion has been met.
[0059] 07.11.2024 24-1220
[0060] The operating procedure can implement aspects of the cooling and / or heating system described in this document.
[0061] According to another independent aspect of the present disclosure, a software (SW) program is specified. The SW program can be configured to run on one or more processors and thereby execute the operating procedure described in this document for a vehicle cooling and / or heating system.
[0062] According to another independent aspect of the present disclosure, a storage medium is specified. The storage medium may include a software program configured to run on one or more processors and thereby execute the operating procedure described in this document for a vehicle cooling and / or heating system.
[0063] According to another independent aspect of the present disclosure, software with program code is specified. The software is designed to carry out the operating procedure for a cooling and / or heating system of a vehicle when the software runs on one or more software-controlled devices.
[0064] According to another independent aspect of the present disclosure, a system is specified. The system comprises one or more processors; and at least one memory connected to the one or more processors and containing instructions that can be executed by the one or more processors to carry out the operating procedure described in this document for a cooling and / or heating system of a vehicle.
[0065] A processor or processor module is a programmable computing unit, i.e., a machine or an electronic circuit that controls other elements according to given instructions and thereby advances an algorithm (process).
[0066] 07.11.2024 24-1220
[0067] Brief description of the drawings
[0068] Examples of the manifestation of the revelation are shown in the figures and are described in more detail below. They show:
[0069] Figure 1 schematically shows a cooling and / or heating system for a vehicle according to embodiments of the present disclosure,
[0070] Figure 2 schematically shows a characteristic curve of a heat exchanger according to embodiments of the present disclosure,
[0071] Figure 3 schematically shows a graph of a heat transfer property according to embodiments of the present disclosure,
[0072] Figure 4 schematically shows a time diagram for increasing the performance of a heat dissipation system according to embodiments of the present disclosure, and
[0073] Figure 5 shows a flowchart of an operating procedure for a cooling and / or heating system of a vehicle according to embodiments of the present disclosure.
[0074] Implementations of the revelation
[0075] Unless otherwise noted, the same reference symbols are used for identical and equivalent elements in the following.
[0076] Figure 1 schematically shows a cooling and / or heating system 100 for a vehicle according to embodiments of the present disclosure.
[0077] For clarity, Figure 1 shows only those components that are related to or helpful in describing the main idea of this revelation. It should be understood that numerous additional components exist.
[0078] 07.11.2024 Components such as valves, additional heat exchangers, compressors, pumps and systems to be cooled and / or heated may also be present.
[0079] The cooling and / or heating system 100 can be an indirect cooling and heating system with at least one primary circuit 101 and at least one secondary circuit 102. A refrigerant circulates in the at least one primary circuit 101, while a coolant circulates in the at least one secondary circuit 102, which exchanges heat with the at least one primary circuit 101 and is transported to the areas in the vehicle where cooling or heating is required – such as the drive energy storage system in hybrid or electric vehicles or other components to be cooled or heated.
[0080] The cooling and / or heating system 100 comprises at least one heat exchanger 110 with a primary side PRS and a secondary side SES, wherein the primary side PRS can be supplied with a first heat transfer medium WTM1 and the secondary side SES with a second heat transfer medium WTM2 to be cooled. The terms "primary side" and "secondary side" of the at least one heat exchanger 110 are used solely to distinguish the two separate areas, irrespective of which heat transfer medium supplies heat to the at least one heat exchanger 110 and which heat transfer medium absorbs heat.
[0081] The first heat transfer medium WTM1 can be the coolant of the secondary circuit 102, and the second heat transfer medium WTM2 can be the refrigerant of the primary circuit 101.
[0082] In some embodiments, the first heat transfer medium WTM1, in particular the coolant, can be selected from the group comprising water, ethylene glycol, propylene glycol and water mixtures with additives (e.g. corrosion protection), or consisting thereof.
[0083] 07.11.2024 Additionally or alternatively, the second heat transfer medium WTM2, in particular the refrigerant, may be selected from or consisting of the group comprising R-134a (tetrafluoroethane), R-1234yf (HFO-1234yf), CO2 (carbon dioxide, R-744) and propane.
[0084] In some embodiments, the at least one heat exchanger 110 can be a water-cooled condenser (WCC). This plate heat exchanger, for example in the form of a counterflow heat exchanger, can in some embodiments be supplied with coolant on one side or primary side (PRS) and with refrigerant on the other side or secondary side (SES).
[0085] The cooling and / or heating system 100 further comprises at least one control module 120A, 120B, which is configured to adjust, depending on a heat transfer criterion, either the flow rate of the first heat transfer medium WTM1 through the primary side PRS of the at least one heat exchanger 110 or the supply temperature of the first heat transfer medium WTM1 in order to dissipate heat from the second heat transfer medium WTM2. In other words, to efficiently dissipate heat from the refrigerant side, either the flow rate (i.e., the mass flow rate or volume flow rate) on the refrigerant side can be selectively increased or the supply temperature upstream of the heat exchanger 110 can be decreased.
[0086] For this purpose, an optimal state can be identified for at least one heat exchanger 110. This state is characterized, for example, by the fact that a further increase in flow rate leads to no or only a slight increase in the transferred heat output (saturation state). From this point or heat transfer criterion onwards, the supply temperature is then reduced to optimize heat dissipation.
[0087] In some embodiments, the cooling and / or heating system 110 comprises at least one pump 130 for the first heat transfer medium WTM1. The at least one pump 130 can, for example, be a coolant pump. The at least one control module 120 A can be configured to adjust the pump speed depending on the heat transfer criterion.
[0088] 07.11.2024 to control at least one pump 130 in order to adjust, in particular to increase, the flow rate of the first heat transfer medium WTM1 through the primary side PRS of the at least one heat exchanger 110.
[0089] Additionally or alternatively, the cooling and / or heating system 100 comprises at least one cooling mechanism 140 for the first heat transfer medium WTM1. The at least one cooling mechanism 140 may, for example, include a fan. The at least one control module 120B may be configured to control the at least one cooling mechanism 140, depending on the heat transfer criterion, in order to adjust, and in particular reduce, the supply temperature of the first heat transfer medium WTM1.
[0090] Figure 2 schematically shows a characteristic curve of a heat exchanger according to embodiments of the present disclosure. Figure 3 schematically shows a graph of a heat transfer property according to embodiments of the present disclosure.
[0091] According to the embodiments of the present disclosure, depending on a heat transfer property or a corresponding heat transfer criterion, either the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger is selectively increased or the supply temperature of the first heat transfer medium is reduced in order to dissipate heat from the second heat transfer medium. Increasing the flow rate of the first heat transfer medium through the primary side and reducing the supply temperature of the first heat transfer medium can each be used to increase the heat transfer efficiency between the first and second heat transfer media.
[0092] In some embodiments, the heat transfer property can be a product of the heat transfer coefficient k and the exchange surface A of the at least one
[0093] 07.11.2024 24-1220
[0094] The characteristic curve in Figure 2 shows such a heat transfer property kA as a function of the mass flow rate mdot KKL of the first heat transfer medium (coolant) and the mass flow rate mdot KMK of the second heat transfer medium (refrigerant). The characteristic curve can be empirically determined individually for each heat exchanger type.
[0095] The dependence of the heat transfer property kA on the mass flow rate mdot KMK of the second heat transfer medium (refrigerant) is shown by way of example in Figure 3 for two different refrigerant mass flow rates MASI, MAS2, where the x-axis indicates the mass flow rate mdot KKL of the first heat transfer medium (e.g. coolant flow rate DFL).
[0096] Referring to Figure 3, the heat transfer criterion KRI can be defined as the threshold that serves to switch between increasing the flow rate and reducing the supply temperature. The heat transfer criterion KRI corresponds, for example, to the slope of the curve for a specific mass flow rate mdot KMK of the second heat transfer medium (refrigerant).
[0097] Typically, the heat transfer criterion KRI corresponds to an optimal state of the heat exchanger. This state is characterized, for example, by the fact that a further increase in flow rate leads to no or only a slight increase in the transferred heat output (saturation state). From this point onward, i.e., the heat transfer criterion KRI, the supply temperature is then reduced to optimize heat dissipation.
[0098] Figure 4 schematically shows a time diagram for increasing the performance of a heat dissipation according to embodiments of the present disclosure.
[0099] The flow rate DFL of the first heat transfer medium through the primary side of the heat exchanger can be increased until the current heat transfer property kA-Ist reaches the heat transfer criterion (point I on the time axis t).
[0100] 07.11.2024 24-1220
[0101] The heat transfer criterion can be a target value kA-target of the heat transfer property, which corresponds to the optimal state of the heat exchanger.
[0102] During the increase in flow rate, the supply temperature (VLT) remains essentially constant.
[0103] In some embodiments, during a transition period after reaching the heat transfer criterion, the flow rate DFL of the first heat transfer medium through the primary side of the heat exchanger can be further increased, while the reduction of the supply temperature VLT of the first heat transfer medium is initiated. This allows the performance increase to be achieved by increasing the flow rate even after reaching the heat transfer criterion, as long as the reduction of the supply temperature VLT has already been initiated (e.g., by activating a cooling mechanism KUM), but has not yet taken effect due to a certain start-up time or latency.
[0104] The transition period can be defined as the time between reaching the heat transfer criterion (point I on the time axis t) and the effective reduction of the flow temperature (point II on the time axis t). Effectiveness can refer to the point in time at which the flow temperature (VLT) begins to decrease or has already reached a reduced setpoint.
[0105] Once the reduction of the flow temperature becomes effective (point II on the time axis t), the flow rate of the first heat transfer medium through the primary side of the heat exchanger can be reduced to adjust the heat transfer property to the setpoint kA-setpoint (point III on the time axis t), so that a stable optimal state is present.
[0106] Figure 5 schematically shows a flowchart of an operating procedure 500 for a cooling and / or heating system of a vehicle according to embodiments of the present
[0107] 07.11.2024 24-1220
[0108] Disclosure. The operating procedure 500 can be implemented by appropriate software that can be executed by one or more processors (e.g., a CPU).
[0109] Operating procedure 500 comprises, in block 510, increasing the flow rate of a first heat transfer medium through a primary side of at least one heat exchanger to remove heat from a second heat transfer medium to be cooled on a secondary side of the at least one heat exchanger; in block 520, determining whether a heat transfer criterion has been met; and in block 530, reducing the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger and the supply temperature of the first heat transfer medium when the heat transfer criterion has been met. If the heat transfer criterion has not yet been met, the increase in the flow rate of the first heat transfer medium through the primary side of the at least one heat exchanger can be continued.
[0110] According to the invention, control is based on a heat transfer criterion. For example, the current heat transfer characteristic of the heat exchanger can be compared in real time with an optimal heat transfer characteristic, which is defined as the heat transfer criterion. Up to this heat transfer criterion, only the flow rate of the first heat transfer medium is increased to improve performance. If the heat dissipation is to be increased beyond the heat transfer criterion, the supply temperature of the first heat transfer medium can be lowered. This allows the heat transfer performance between the heat transfer media in the heat exchanger to be efficiently increased and the energy efficiency of the cooling and / or heating system to be improved.
[0111] Although the invention has been further illustrated and explained in detail by means of preferred embodiments, the invention is not limited by the disclosed examples and other variations can be derived from them by a person skilled in the art without departing from the scope of protection of the invention. It is therefore clear that a multitude of
[0112] 07.11.2024 24-1220
[0113] There are numerous possible variations. It is also clear that the exemplary embodiments mentioned are merely examples and should not be interpreted in any way as limiting the scope of protection, the possible applications, or the configuration of the invention. Rather, the preceding description and the description of the figures enable the person skilled in the art to implement the exemplary embodiments in concrete terms. With knowledge of the disclosed inventive concept, the person skilled in the art can make numerous modifications, for example, regarding the function or the arrangement of individual elements mentioned in an exemplary embodiment, without leaving the scope of protection defined by the claims and their legal equivalents, such as further explanations in the description.
[0114] November 7, 2024
Claims
24-1220 Patent claims 1. Cooling and / or heating system (100) for a vehicle, comprising: at least one heat exchanger (110) with a primary side (PRS) and a secondary side (SES), wherein the primary side (PRS) can be supplied with a first heat transfer medium (WTM1) and the secondary side (SES) with a second heat transfer medium (WTM2) to be cooled; and at least one control module (120A, 120B) that is set up to adjust, depending on a heat transfer criterion (KRI, kA setpoint), either a flow rate (DFL) of the first heat transfer medium (WTM1) through the primary side (PRS) of the at least one heat exchanger (HO) or a supply temperature (VLT) of the first heat transfer medium (WTM1) in order to remove heat from the second heat transfer medium (WTM2).
2. Cooling and / or heating system (100) according to claim 1, wherein the first heat transfer medium (WTM1) is a coolant of a cooling circuit (102) of the cooling and / or heating system (100) and the second heat transfer medium (WTM2) is a refrigerant of a refrigeration circuit (102) of the cooling and / or heating system (100), in particular wherein the cooling and / or heating system (100) is an indirect cooling and / or heating system.
3. Cooling and / or heating system (100) according to claim 1 or 2, wherein the heat transfer criterion (KRI, kA-setpoint) relates to a heat transfer property (kA) of the at least one heat exchanger (HO), in particular wherein the heat transfer criterion (KRI, kA-setpoint) is a setpoint (kA-setpoint) of the heat transfer property (kA).
4. Cooling and / or heating system (100) according to one of claims 1 to 3, wherein the heat transfer criterion (KRI, kA setpoint) comprises or relates to a heat transfer coefficient, in particular wherein the heat transfer criterion (KRI, kA setpoint) is a product of the heat transfer coefficient and an exchange surface of the at least one heat exchanger (110). November 7, 2024 5. Cooling and / or heating system (100) according to one of claims 1 to 4, wherein the heat transfer criterion (KRI, kA setpoint) depends on a flow rate of the second heat transfer medium (WTM2) through the secondary side (SES), in particular wherein the flow rate of the second heat transfer medium (WTM2) is a mass flow rate of the second heat transfer medium (WTM2).
6. Cooling and / or heating system (100) according to any one of claims 1 to 5, wherein the at least one control module (120A, 120B) is configured to: to increase the flow rate (DFL) of the first heat transfer medium (WTM1) through the primary side (PRS) of the at least one heat exchanger (110) at least until the heat transfer criterion (KRI, kA setpoint) is reached; and to reduce the flow temperature (VLT) of the first heat transfer medium (WTM1) when the heat transfer criterion (KRI, kA setpoint) is reached.
7. Cooling and / or heating system (100) according to claim 6, wherein the at least one control module (120A, 120B) is configured to: to further increase the flow rate (DFL) of the first heat transfer medium (WTM1) through the primary side (PRS) of the at least one heat exchanger (110) during a transition period after reaching the heat transfer criterion (KRI, kA setpoint) and to cause the reduction of the supply temperature (VLT) of the first heat transfer medium (WTM1), in particular where the transition period between reaching the heat transfer criterion (KRI, kA setpoint) and the effectiveness of the reduction of the supply temperature (VLT) is defined; and after the transition period window, the flow rate (DFL) of the first heat transfer medium (WTM1) through the primary side (PRS) of the at least one heat exchanger (HO) is reduced, in particular to adjust a heat transfer property (kA) to a setpoint (kA-setpoint).
8. Vehicle (10), in particular motor vehicle, comprising the cooling and / or heating system (100) according to any one of claims 1 to 7. November 7, 2024 9. Operating procedure (500) for a cooling and / or heating system (100) of a vehicle, comprising: Increasing (510) a flow rate (DFL) of a first heat transfer medium (WTM1) through a primary side (PRS) of at least one heat exchanger (110) in order to remove heat from a second heat transfer medium (WTM2) to be cooled of a secondary side (SES) of the at least one heat exchanger (110); Determine (520) whether a heat transfer criterion (KRI, kA setpoint) has been met; and - Reducing (530) the flow rate (DFL) of the first heat transfer medium (WTM1) through the primary side (PRS) of the at least one heat exchanger (110) and the supply temperature (VLT) of the first heat transfer medium (WTM1) when the heat transfer criterion (KRI, kA setpoint) is reached.
10. Storage medium comprising a software program configured to run on one or more processors and thereby to execute the operating method (500) according to claim 9. November 7, 2024