Radiator for a motor vehicle as well as motor vehicle

Abstract

Radiator (2) for a motor vehicle (1), comprising several conduit elements (3) through which a coolant flows, between which air channels (4) through which air flows are arranged, whereby heat can be transferred between the air flowing through the air channels (4) and the coolant flowing through the conduit elements (3), characterized in that the cross-sectional areas (5) of the conduit elements (3) through which the coolant flows are different from each other in at least two different sub-regions (6, 7) of the radiator (2) and / or the cross-sectional areas (8) of the air channels (4) through which the air flows are different from each other in different sub-regions (6, 7) of the radiator (2), wherein • the cooler (2) has at least one fan (28) by means of which, with reference to the first and second sub-areas (6, 7), air can be conveyed through the air channels (4) exclusively in the second sub-area (7).

Description

[0001] The invention relates to a radiator for a motor vehicle according to the preamble of patent claim 1. Furthermore, the invention relates to a motor vehicle.

[0002] EP 2 159 145 A1 discloses an assembly for a motorcycle, wherein the motorcycle comprises a main frame with a substantially vertically extending longitudinal plane of symmetry, and wherein the assembly comprises at least a radiator and a battery. After mounting the assembly on the motorcycle, the radiator is arranged on one side of the plane of symmetry, while the battery is arranged on the opposite side of the plane of symmetry with respect to the radiator.

[0003] Furthermore, DE 10 2015 115 680 A1 discloses a radiator arranged in front of a cooling fan. The radiator has a main heat-radiating section for cooling a high-temperature coolant, an auxiliary heat-radiating section for cooling a coolant having a relatively lower temperature than the coolant passing through the main heat-radiating section, and an insulating plate that prevents heat from being exchanged between the main heat-radiating section and the auxiliary heat-radiating section.

[0004] Furthermore, DE 10 2017 120 045 A1 discloses a motor vehicle with a heat exchanger arranged in the front area and designed as a micro-channel cooler for a drive device.

[0005] In addition, DE 10 2005 048 838 A1 discloses a heat exchanger with a heat exchanger grid and tubes arranged parallel to each other in the heat exchanger grid.

[0006] It is an object of the invention to provide a radiator for a motor vehicle and a motor vehicle with such a radiator, so that an installation space of the radiator can be designed particularly advantageously and a particularly good cooling effect can be achieved by means of the radiator.

[0007] This object is achieved according to the invention by a radiator for a motor vehicle having the features of patent claim 1 and by a motor vehicle having the features of patent claim 10. Advantageous embodiments of the invention are the subject of the dependent patent claims and the description.

[0008] A first aspect of the invention relates to a radiator for a motor vehicle. The motor vehicle is preferably designed as a motorcycle, in particular a motorbike. Alternatively, the motor vehicle is designed, for example, as a motor vehicle, in particular as a passenger car, commercial vehicle, or truck. The motor vehicle, particularly in its fully manufactured state, preferably has the radiator.

[0009] The motor vehicle is preferably designed as an electrically driven motor vehicle. Thus, the motor vehicle is designed, for example, as a battery-electric motor vehicle or as a hybrid vehicle. For example, the motor vehicle has at least one electric machine by means of which the motor vehicle can be driven electrically, in particular purely electrically. For example, the motor vehicle has an internal combustion engine by means of which the motor vehicle can be driven.

[0010] The cooler has a plurality of line elements through which a coolant can flow. In other words, the cooler has a plurality of line elements through which the coolant can flow or through which it flows. The coolant is preferably a liquid. Therefore, the cooler can be referred to in particular as a liquid cooler. For example, the coolant comprises water. The coolant can thus be water, for example.

[0011] Air ducts through which air can flow are arranged between the duct elements, whereby heat can be transferred, in particular exchanged, between the air flowing through the air ducts and the coolant flowing through the duct elements, in particular at least indirectly or directly. In other words, the air ducts extend at least partially, in particular completely, between the duct elements. As a result, the air flowing through the air ducts and the coolant flowing through the duct elements are or can be thermally coupled to one another for heat transfer. The fact that the air ducts through which air can flow are arranged between the duct elements can be understood in particular to mean that at least one of the air ducts is arranged between each two of the duct elements.

[0012] In order to be able to design the installation space of the motor vehicle, in particular of the radiator, particularly advantageously, in particular to be able to keep it particularly small, and in order to be able to achieve a particularly good cooling effect by means of the radiator, it is provided according to the invention that line cross-sections of the line elements through which the coolant can flow are different from one another in at least two different sub-regions of the radiator. In other words, the radiator has at least two sub-regions, wherein line cross-sections of the line elements in the first sub-region, i.e. line cross-sections of the line elements which are arranged in the first sub-region, are different from line cross-sections of the line elements in a second of the sub-regions, i.e. different from line cross-sections of the line elements which are arranged in the second sub-region.This means that, for example, a first group or a first number of line elements is arranged in the first sub-region and a second group or second number of line elements that is different from the first group or the first number is arranged in the second sub-region, wherein the line elements of the first group or the first number each have, for example, a respective first line cross-section and the line elements of the second group or the second number each have, for example, a second respective line cross-section that is different from the first respective line cross-section.

[0013] In order to be able to particularly advantageously design the installation space of the motor vehicle, in particular of the radiator, and in particular to keep it particularly small, and to be able to achieve a particularly good cooling effect by means of the radiator, it is alternatively or additionally provided according to the invention that the channel cross-sections of the air ducts through which the air can flow are different from one another in different sub-regions of the radiator. In other words, the channel cross-sections in the first sub-region, i.e. the channel cross-sections of the air ducts arranged in the first sub-region, are different from the channel cross-sections in the second sub-region, i.e. different from the channel cross-sections of the air ducts arranged in the second sub-region.This means that, for example, a first group or a first number of air ducts is arranged in the first sub-area and a second group or second number of air ducts that is different from the first group or the first number of air ducts is arranged in the second sub-area, wherein the air ducts of the first group or the first number each have, for example, a respective first duct cross-section and the air ducts of the second group or the second number each have, for example, a respective second duct cross-section that is different from the first duct cross-section.

[0014] The respective line cross-section can be understood, in particular, as a respective pipe cross-section. Thus, the respective line element can be, for example, a respective pipe, which preferably has a circular cross-section. The fact that the line cross-sections of the line elements are different can be understood, in particular, to mean that a size and / or a shape of the line cross-sections differs from one another. The fact that the duct cross-sections of the air ducts are different can be understood, in particular, to mean that a size and / or a shape of the duct cross-sections differs from one another.

[0015] The fact that the particularly good cooling effect can be achieved by means of the cooler can be understood in particular to mean that at least one device of the motor vehicle or several devices of the motor vehicle, in particular devices designed separately from one another, can be cooled particularly well, in particular particularly intensively. Alternatively or additionally, the fact that the particularly good cooling effect can be achieved by means of the cooler can be understood in particular to mean that the coolant flowing through the cooler, in particular the line elements, can be cooled particularly well or particularly intensively via the cooler, in particular via the air ducts or the air flowing through the air ducts. This means that the transfer of heat can be particularly improved.

[0016] It is provided that the radiator has at least one fan, by means of which the air can be conveyed through the air ducts exclusively in the second sectional area, with respect to the first and the second sectional area. In other words, the air can be conveyed through the air ducts by means of the fan in exactly one of the sectional areas, for example in the second sectional area. In other words, the air ducts arranged in the second sectional area can be supplied with air by means of the fan so that it can flow through the air ducts. This means that the flow of air through the air ducts in the second sectional area can be effected or is effected at least partially, in particular completely, by the fan. As a result, a particularly good cooling effect can be achieved in the second sectional area, in particular when the motor vehicle is stationary, i.e. when there is no airflow.The fan is preferably designed as an electric or electrically driven fan. The term "fan" can be understood, in particular, as a blower or ventilator.

[0017] The invention is based in particular on the following findings and considerations: In both a motor vehicle driven by an internal combustion engine and an electrically, in particular purely electrically, driven motor vehicle, heat dissipation via the radiator, which is designed, for example, as a water cooler, can be necessary or important both when the motor vehicle is stationary or traveling at low speed and at high or particularly high speed. In electromobility, i.e., for example, in the electrically driven motor vehicle, a large part of the waste heat dissipated during this heat can be dissipated when the motor vehicle is stationary, in particular when the fan is running, or during rapid charging of an electrical energy storage device in the motor vehicle.A particularly fast charging time can result in a particularly good cooling effect or particularly intensive cooling of the electrical energy storage device. In the case of an electrically driven motor vehicle, for example, while the motor vehicle is traveling, in particular at particularly high speeds, heat dissipation via the radiator may be necessary in order to cool a drive of the motor vehicle, in particular the electric motor and / or its control system. In principle, it is conceivable to install two, in particular identical, radiators in the case of a motor vehicle driven by an internal combustion engine, one of which has a fan, for example. In principle, it is conceivable to provide different radiators or different cooling systems, for example cooling circuits, for the drive, in particular the electric motor, and the electrical energy storage device.This may be due to the fact that a cooling circuit intended for driving operation, in particular for the drive, may have a different system temperature or different requirements, in particular cooling requirements, than a cooling circuit or such a cooling system intended for the electrical energy storage device, in particular for rapid charging. This means that it is conceivable in principle to provide two separately designed coolers, wherein a first of the coolers is intended for cooling the electrical energy storage device, in particular in fan mode, and the second of the coolers is intended for driving operation, in particular for cooling the drive. Thus, for example, different, individually optimized coolers, in particular water coolers, can be used.Alternatively, it is conceivable in principle to use a single cooler instead of two separate coolers. However, this compromise may not be optimally designed. This can have a negative impact on the cooler's efficiency, cost, weight, and installation space. It is also conceivable to create a cooler from combined individual coolers, such as an air conditioning cooler and a water cooler, with the air conditioning cooler being positioned upstream of the water cooler, for example. This can have a particularly negative impact on efficiency, cost, weight, and installation space.

[0018] In contrast, the cooler according to the invention can be used to create a combined cooler with different sub-areas, in particular different network divisions or network depths and / or pipe cross-sections, wherein the first sub-area is optimized for a first device of the motor vehicle, for example for the driving range, in particular for cooling the drive, and the second sub-area is optimized for a second device of the motor vehicle, in particular for cooling the electrical energy storage device, in particular for fan operation. This means that the cooler can be divided into the part optimized for cooling the first device, in particular the electrical machine, and the part optimized for cooling the second device, in particular the electrical energy storage device.Thus, by means of the cooler according to the invention, several, for example at least two, separately designed individual coolers can be replaced by the combined cooler according to the invention, which can in particular consist of only one, in particular exactly one, unit. The respective pipe cross-sections can each be optimized for water throughput and the respective channel cross-sections can each be optimized for air throughput. This can particularly improve the cooling effect of the cooler. In particular, the devices, for example the electric machine and the electrical energy storage device, can be cooled particularly advantageously, in particular particularly efficiently and / or particularly intensively. Furthermore, the installation space of the cooler according to the invention can be designed particularly advantageously, in particular kept particularly small. Furthermore, the weight of the cooler can be kept particularly low.Furthermore, costs, in particular manufacturing costs, of the cooler according to the invention can be kept particularly low. This means that the cooler, particularly referred to as a combination cooler, can be manufactured particularly cost-effectively, for example automatically, with, for example, particularly minimized parts and installation space requirements, also from a system perspective. A plastic water tank, for example, can be used in order to keep the manufacturing costs of the cooler particularly low. Thus, by means of the cooler according to the invention, a particularly robust and particularly safe system can be created in which, for example, technology costs can be kept particularly low. Overall, it can be seen that by means of the cooler according to the invention, a cooler can be created that is optimized or can be optimized for a specific intended use of the cooler.

[0019] In a further embodiment, it is provided that cooling fins are arranged between the duct elements, at least partially, in particular completely, delimiting the channel cross-sections of the air ducts, via which cooling fins heat can be transferred, in particular exchanged, from the respective duct element to the air flowing through the respective air duct and thereby flowing around the respective cooling fin. In other words, the air ducts, in particular the duct cross-sections, are at least partially, in particular completely, formed by the cooling fins or surrounded by the cooling fins. Via the cooling fins, heat can be transferred from the coolant flowing through the respective duct element to the air flowing through the respective air duct and thereby flowing around the respective cooling fin.In other words, the coolant flowing through the duct elements can be thermally coupled to the air flowing through the air ducts via the cooling fins for heat transfer. This allows for particularly good heat transfer between the coolant and the air. This means that the heat transfer from the coolant to the air can be significantly improved. For example, the mesh patterns or fin pitches of the cooling fins vary in the different sub-areas. The fin pitches can be optimized for each air flow rate.

[0020] In a further embodiment, at least one side part is provided, via which the respective line element can be supplied with the coolant flowing through the respective line element, in particular at least indirectly or directly, and / or the coolant flowing through the respective line element can be discharged from the respective line element, in particular directly. In other words, the side part through which the coolant can flow is fluidly connected to the respective line element, in particular at least indirectly or directly. As a result, the respective line element can be supplied with the coolant via the side part in a particularly advantageous, in particular particularly safe and / or space-saving manner. Alternatively or additionally, the coolant can be discharged from the respective line element via the side part in a particularly advantageous, in particular particularly safe and / or space-saving manner.

[0021] In a further embodiment, it is provided that the line elements arranged in the first sub-region are fluidically connected, in particular via the side part, to the line elements arranged in the second sub-region, in particular directly. In other words, the coolant flowing through the line elements arranged in the first sub-region can be discharged from the line elements arranged in the first sub-region, in particular via the side part, and introduced, in particular via the side part, into the line elements arranged in the second sub-region. Alternatively or additionally, the coolant flowing through the line elements arranged in the second sub-region can be discharged, in particular via the side part, from the line elements arranged in the second sub-region and introduced, in particular via the side part, into the line elements arranged in the first sub-region.As a result, the sub-areas or the line elements arranged in the respective sub-area can be arranged in a common cooling circuit.

[0022] The cooling circuit can preferably be flowed through by the coolant. For example, the radiator is arranged in the cooling circuit. For example, at least one of the devices of the motor vehicle can be cooled by means of the cooling circuit, in particular via the coolant flowing through the cooling circuit. Heat from the coolant flowing through the cooling circuit can preferably be dissipated via the radiator, for example in an environment of the motor vehicle. For example, several of the devices, in particular at least two devices, can be cooled by means of the cooling circuit, in particular via the coolant flowing through the cooling circuit. The respective device is arranged, for example, in the cooling circuit. Thus, the devices can, for example, be arranged in series in the cooling circuit or, in particular fluidically, can be cooled in series by means of the coolant.Thus, for example, it is provided that the coolant flowing through the line elements arranged in the first sub-area and the line elements arranged in the second sub-area is intended to cool both devices. Overall, it can be seen that the cooling of the respective device can thus be achieved via exactly one cooler, and in particular via both sub-areas.

[0023] For example, a first of the devices is embodied as the electrical machine. In other words, the first device is, for example, the electrical machine. For example, the second of the devices is embodied as the electrical energy storage device. Thus, the second device is, for example, the electrical energy storage device.

[0024] The electrical energy store is preferably designed as a battery or an accumulator. Preferably, the electrical machine can be supplied with electrical energy stored in the electrical energy store for driving the motor vehicle. The electrical energy store is designed, for example, as a high-voltage store. This means that the electrical energy store, in particular in order to be able to realize a particularly high electrical conductivity for the electrical, in particular purely electrical, drive of the motor vehicle, can have an electrical voltage, in particular an electrical operating or nominal voltage, which is preferably greater than 50 volts, in particular greater than 60 volts, and preferably amounts to several hundred volts. Accordingly, the electrical energy store is designed, for example, as a high-voltage component.

[0025] In an alternative embodiment, it is provided that the line elements arranged in the first sub-region are fluidically separated from the line elements arranged in the second sub-region, in particular via the side part. This means that the sub-regions, in particular the line elements arranged in the respective sub-region, are not fluidically connected to one another. In other words, the coolant can flow through the sub-regions independently of one another. This means that the coolant can flow through the line elements arranged in the first sub-region independently of the line elements arranged in the second sub-region. As a result, the cooler can be arranged in two, in particular different, cooling circuits. The cooler can thus be used to cool coolant from different cooling circuits.The different cooling circuits can be understood in particular as two cooling circuits that are designed separately from one another.

[0026] It is preferably provided that the cooler is provided for cooling the at least two devices of the motor vehicle, wherein the devices are designed separately from one another and wherein the coolant flowing through the line elements arranged in the first partial area is provided exclusively for cooling the first device with respect to the devices, in particular the first and the second device, and the coolant flowing through the line elements arranged in the second partial area is provided exclusively for cooling the second device with respect to the devices, in particular the first and the second device.This means that the first device can be cooled by means of the coolant flowing through the line elements arranged in the first sub-region, while the second device is not cooled, and that the second device can be cooled by means of the coolant flowing through the line elements arranged in the second sub-region, while the first device is not cooled. As a result, for example, despite the two separately formed cooling circuits, only one radiator may be required. This allows the installation space of the motor vehicle to be designed particularly advantageously, in particular, to be kept particularly small.

[0027] In a further embodiment, it is provided that the line elements extend to different lengths in the sub-regions along a flow direction in which the air can flow through the air ducts. In other words, the line elements arranged in the first sub-region extend along the flow direction over a first length, and the line elements arranged in the second sub-region extend along the flow direction over a second length that differs from the first length. As a result, the cooling effect of the cooler that can be achieved by means of the respective sub-region can be designed, in particular adjusted, in a particularly advantageous or needs-based manner. The respective sub-regions can thus be individually optimized.

[0028] In a further embodiment, it is provided that in at least one of the sub-regions, at least one outer side of the air ducts facing outwards against the flow direction in which the air can flow through the air ducts is covered at least partially, in particular completely, for example at least indirectly or directly, by a cover element. In other words, in at least one of the sub-regions, in particular the second sub-region, the cover element is arranged, which at least partially, in particular completely, surrounds the air ducts on the outer side against the flow direction. In other words, the air ducts of at least one of the sub-regions, in particular the second sub-region, are shielded on the outer side by the cover element.As a result, flow losses when air, particularly airstream, flows through the second partial area while the motor vehicle is moving can be avoided or kept to a minimum. This is particularly advantageous if the partial area where the cover element is arranged is intended for cooling the respective device when the motor vehicle is stationary. This allows the motor vehicle to be operated particularly efficiently. The outer side is preferably an outer side facing forward in the direction of travel of the motor vehicle.

[0029] A second aspect of the invention relates to a motor vehicle having a radiator according to the first aspect of the invention. The motor vehicle is preferably designed as a motor vehicle, in particular as a motorcycle. Advantages and advantageous embodiments of the first aspect of the invention are to be regarded as advantages and advantageous embodiments of the second aspect of the invention, and vice versa.

[0030] Further features of the invention emerge from the claims, the figures, and the description of the figures. The features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respective specified combination, but also in other combinations or on their own.

[0031] The invention will now be explained in more detail using a preferred embodiment and with reference to the drawings. They show: Fig. 1 is a schematic and perspective partial view of a motor vehicle according to the invention, which has a radiator according to the invention; and Fig. 2 is a schematic and perspective partial sectional view of a cooler according to the invention; and Fig. 3 is a schematic partial sectional view of a cooler according to the invention; and Fig. 4 is a schematic front view of a cooler according to the invention; and Fig. 5 is a schematic front view of a cooler according to the invention according to a further embodiment; and Fig. 6 is a schematic partial sectional view of a cooler according to the invention according to a further embodiment; and Fig. 7 is a schematic partial sectional view of a cooler according to the invention according to a further embodiment; and Fig. 8 is a schematic perspective view of a cooler according to the invention according to a further embodiment; and Fig. 9 a schematic perspective view of a cooler according to the invention according to another embodiment.

[0032] In the figures, identical or functionally identical elements are provided with the same reference symbols.

[0033] Fig. Figure 1 shows a schematic and perspective partial view of a motor vehicle 1, which in the exemplary embodiment is designed as a motorcycle. The motor vehicle 1 has at least one radiator 2. Fig. 2 shows the cooler 2 in a schematic and perspective partial sectional view. Fig. 3 shows the cooler 2 in a schematic partial sectional view.

[0034] The cooler 2 has a plurality of line elements 3 through which a coolant can flow, between which air channels 4 through which air can flow are arranged, whereby heat can be transferred between the air flowing through the air channels 4 and the coolant flowing through the line elements 3.

[0035] In order to be able to design the installation space of the cooler 2 particularly advantageously, in particular to be able to keep it particularly small, and in order to be able to particularly increase the cooling effect of the cooler 2, it is provided that the line cross-sections 5 of the line elements 3 through which the coolant can flow are different from one another in different sub-regions 6, 7 of the cooler 2 and / or the channel cross-sections 8 of the air channels 4 through which air can flow are different from one another in the different sub-regions 6, 7 of the cooler 2. This means that the cooler 2 has at least a first of the sub-regions 6 and at least a second of the sub-regions 7. Thus, for example, first of the line elements 3a are arranged in the first sub-region 6 and second of the line elements 3b, in particular different from the first line elements 3a, are arranged in the second sub-region 7.For example, first of the air ducts 4a are arranged in the first sub-region 6 and second of the air ducts 4b, in particular different from the first air ducts 4a, are arranged in the second sub-region 7. In the first sub-region 6, the line elements 3 or the line cross-sections 5, in particular of the first line elements 3a, have a first line cross-section 5a, in particular a first line cross-section value, and in the second sub-region 7, the line elements 3 or the line cross-sections 5, in particular of the second line elements 3b, have a second line cross-section 5b different from the first line cross-section 5a, in particular a second line cross-section value different from the first line cross-section value.Alternatively or additionally, the air ducts 4 or the duct cross-sections 8, in particular of the first air ducts 4a, in the first partial area 6 have a first duct cross-section 8a, in particular a first duct cross-section value, and in the second partial area 7 the air ducts 4, or the duct cross-sections 8, in particular of the second air ducts 4b, have a second duct cross-section 8b different from the first duct cross-section 8a, in particular a second duct cross-section value different from the first duct cross-section value.

[0036] For example, the line cross-sections 5a in the first sub-region 6 are larger than the line cross-sections 5b in the second sub-region 7. Alternatively or additionally, the channel cross-sections 8a in the first sub-region 6 are, for example, larger than the channel cross-sections 8b in the second sub-region 7. Thus, in the first sub-region 6, for example, a particularly low air resistance can be achieved for air flowing through the air channels 4b. As a result, the air can flow through the cooler 2, for example, with particularly little resistance or efficiency. In the second sub-region 7, as the air flows through the air channels 4b, a particularly good, in particular particularly high, heat transfer can be achieved between the air and the coolant flowing through the line elements 3b. As a result, a particularly high cooling effect of the cooler 2 can be achieved.

[0037] In a further embodiment, it is provided that cooling fins 9 are arranged between the conduit elements 3, at least partially delimiting the channel cross-sections 8 or the air channels 4, via which heat can be transferred from the respective conduit element 3 to the air flowing through the respective air channel 4 and thereby flowing around the respective cooling fin 9. Thus, as in Fig. 3, for example, a fin pitch of the cooling fins 9 in the subregions 6, 7 differs from one another. For example, the fin pitch in the first subregion 6 is wider than in the second subregion 7. This means that the fin pitch in the second subregion 7 is, for example, narrower than in the first subregion 6.

[0038] In a further embodiment, the cooler 2 has at least one side part 10, in particular through which the coolant can flow, via which the respective line element 3 can be supplied with the coolant flowing through the respective line element 3 and / or the coolant flowing through the respective line element 3 can be discharged from the respective line element 3 and in particular can be introduced into the side part 10. Thus, for example, a line section through which the coolant can flow runs within the side part 10 and is fluidically connected to the line elements 3. For example, fastening elements 11 are provided via which the line elements 3 are held or fastened, in particular directly, to the side parts 10. The side part 10 is, for example, part of a box through which the coolant can flow and is referred to in particular as a water box.

[0039] Fig. 4 shows the cooler 2 in a schematic front view. In the Fig. 4, the line elements 3a arranged in the first sub-area 6 are fluidically connected, in particular via the side part 10 or via the line section, to the line elements 3b arranged in the second sub-area 7. For example, the cooler 2, in particular the water tank, has a second side part 12 spaced apart from the side part 10. In the embodiment shown in Fig. In the embodiment shown in Figure 4, the cooler 2 has one, in particular exactly one, inlet opening 13, which can be referred to in particular as a coolant inlet or water inlet. Within the second side part 12, for example, runs a first longitudinal region 14 through which the coolant can flow. The coolant can be introduced into the second side part 12, in particular into the first longitudinal region 14, via the inlet opening 13. The line elements 3b are fluidically connected, in particular directly, to the first longitudinal region 14. As in Fig. 4, the fluid flowing through the first longitudinal region 14 can be introduced into the line elements 3b and from there into the side part 10, in particular into the line section or a second longitudinal region 15 through which the coolant can flow. The line elements 3a, 3b are fluidically connected to one another via the second longitudinal region 15, in particular directly. Thus, the coolant flowing through the line elements 3b can be introduced into the line elements 3a via the side part 10, in particular via the second longitudinal region 15. The second side part 12 has a third longitudinal region 16, different from the first longitudinal region 14, which is fluidically connected to the line elements 3a, in particular directly. Thus, the coolant flowing through the line elements 3a can be discharged from the line elements 3a via the third longitudinal region 16. The cooler 2 has Fig. 4, the cooling system has one, in particular exactly one, outlet opening 17, through which the coolant flowing through the third longitudinal region 16 can be discharged from the cooler 2. The outlet opening 17 can be referred to in particular as a coolant outlet or water outlet. The outlet opening 17 is arranged, for example, on the second side part 12. In the embodiment shown in Fig. In the embodiment shown in Figure 4, the longitudinal sections 14, 16 are fluidically separated from one another by a separating element 18, for example a partition wall. This prevents the coolant located in the first longitudinal section 14 from overflowing, in particular directly, over the second side part 12. Fig. 4 it can be seen overall that the line elements 3a, 3b are connected in series, in particular in terms of fluid mechanics.

[0040] For example, the motor vehicle 1 has a cooling circuit 19 through which the coolant can flow. Fig. 4, the radiator 2 is arranged in the cooling circuit 19. The cooling circuit 19 has, for example, at least one line region 20 through which the coolant can flow, via which two separately formed devices 21, 22 of the motor vehicle 1 can be cooled. In the embodiment shown in Fig. In the embodiment shown in Figure 4, the devices 21, 22 can be cooled in series by the coolant, particularly fluidically. Thus, the coolant flowing through both subregions 6, 7 is provided, for example, for cooling both devices 21, 22. In particular, the cooler 2 can be designed, for example, as a combination cooler series circuit, particularly for cooling the devices 21, 22 in series. Thus, the cooler 2 can, for example, have, in particular, only two connections, particularly in the form of the inlet opening 13 and the outlet opening 17.

[0041] A first of the devices 21 is designed, for example, as an electric machine of the motor vehicle 1. A second of the devices 22 is designed, for example, as an electrical energy storage device, in particular as a high-voltage storage device, of the motor vehicle 1. Alternatively, one of the devices 21, 22 can be an internal combustion engine.

[0042] Fig. 5 shows the cooler 2 in a schematic front view according to a further embodiment, in which the line elements 3a arranged in the first partial region 6 are fluidically separated from the line elements 3b arranged in the second partial region 7. The fluidic separation is effected, for example, by a second separating element 23, for example a partition wall, which is spaced apart from the first separating element 18. The second separating element 23 is arranged, for example, in the side part 10. As a result, the side part 10, in particular the line section, is divided, for example, into the second longitudinal region 15 and a fourth longitudinal region 24 which is different from the second longitudinal region 15 and through which the coolant can flow. In the Fig. In the embodiment shown in Figure 5, the cooler 2 has two inlet openings 13a, 13b that are spaced apart from one another and through which the coolant can flow. A first of the inlet openings 13a is arranged on the side part 10 and is fluidically connected to the fourth longitudinal region 24. The coolant can thus be introduced into the fourth longitudinal region 24 via the first inlet opening 13a. The fourth longitudinal region 24 is fluidically connected to the line elements 3a. The coolant introduced into the cooler 2 via the first inlet opening 13a can thus be introduced into the line elements 3a via the fourth longitudinal region 24. For example, the cooler 2 has outlet openings 17a, 17b that are spaced apart from one another and through which the coolant can flow. The line elements 3a are fluidically connected to a first of the outlet openings 17a via the third longitudinal region 16.Thus, the coolant flowing through the line elements 3a can be introduced into the third longitudinal region 16 and from there discharged from the cooler 2 via the first outlet opening 17a. The first outlet opening 17a is preferably arranged on the second side part 12.

[0043] In the Fig. In the embodiment shown in Figure 5, a second of the inlet openings 13b is arranged on the second side part 12. Via the second inlet opening 13b, the coolant can be introduced into the first longitudinal region 14, which is fluidically connected, in particular directly, to the line elements 3b, whereby the coolant flowing through the first longitudinal region 14 can be introduced into the line elements 3b. The line elements 3b are fluidically connected, in particular directly, to the third longitudinal region 15, whereby the coolant flowing through the line elements 3b can be introduced into the third longitudinal region 15. A second of the outlet openings 17b is arranged on the side part 10. Via the third longitudinal region 15, the line elements 3b are fluidically connected, in particular directly, to the second outlet opening 17b.Thus, the coolant flowing through the line elements 3b can be introduced into the third longitudinal region 15 and from there discharged from the cooler 2 via the second outlet opening 17b. Thus, from . Fig. 5 that the partial areas 6, 7 can be flowed through separately from one another, or are flowed through separately. For example, the motor vehicle 1 has two separately formed cooling circuits 19a, 19b.

[0044] For example, the first sub-region 6, in particular the line elements 3a arranged in the first sub-region 6, is arranged in a first of the cooling circuits 19a. For example, the second sub-region 7, in particular the line elements 3b arranged in the second sub-region 7, is arranged in the second cooling circuit 19b. Thus, for example, it is provided that the cooler 2 is provided for cooling the devices 21, 22, wherein the coolant flowing through the line elements 3a arranged in the first sub-region 6 is provided exclusively for cooling the first device 21 with respect to the devices 21, 22, and the coolant flowing through the line elements 3b arranged in the second sub-region 7 is provided exclusively for cooling the second device 22 with respect to the devices 21, 22.Overall, it can be seen that the cooler has, for example, four connections, in particular in the form of the inlet openings 13a, 13b and the outlet openings 17a, 17b, in particular in order to be able to be arranged in the two cooling circuits 19a, 19b.

[0045] For example, the devices 21, 22 can be cooled directly by the respective coolant. This means that the devices 21, 22 are arranged, for example, in particular directly, in the respective cooling circuit 19, 19a, 19b. Alternatively, the respective device 21, 22 can be cooled indirectly via the coolant or the respective cooling circuit 19, 19a, 19b. This means that in the Fig. 4, the respective device 21, 22 can be thermally coupled, for example, via a further cooling circuit formed separately from the cooling circuit 19 for cooling the respective device 21, 22. In the embodiment shown in Fig. In the embodiment shown in Figure 5, the first device 21 for cooling the first device 21 can be thermally coupled to the first cooling circuit 19a, for example, via a further cooling circuit formed separately from the first cooling circuit 19a. Furthermore, the second device 22 for cooling the second device 22 can be thermally coupled to the second cooling circuit 19b via a further cooling circuit formed separately from the cooling circuits 19a, 19b.

[0046] Fig. Fig. 6 shows the cooler 2 in a schematic partial sectional view according to a further embodiment, in which the line elements 3 in the partial regions 6, 7 extend to different lengths along a flow direction 25, in which the air can flow through the air ducts 4. For example, the line elements 3a in the first partial region 6 extend along the flow direction 25 over a first length 26, and the line elements 3b in the second partial region 7 extend along the flow direction 25 over a second length 27 that is different from the first length 26, in particular greater than the first length 26. In the Fig. In the embodiment shown in Figure 6, the line elements 3a in the first sub-region 6 are arranged centrally in the radiator 2 with respect to the flow direction 25. The flow direction 25 preferably runs opposite to a direction of travel or a longitudinal direction of the motor vehicle 1. Fig. Fig. 7 shows the cooler 2 in a schematic partial sectional view according to a further embodiment, in which the line elements 3a in the first partial area 6 are arranged opposite to the Fig. 6 are arranged offset against the flow direction 25. Thus, the line elements 3a in the embodiment shown in Fig. 7, for example, is arranged further forward in the direction of travel of the motor vehicle 1 than in the embodiment shown in Fig. 6. This means that the line elements 3a are located, for example, in a front region relative to the direction of travel of the motor vehicle 1. By arranging the line elements 3a relative to the flow direction 25 or the vehicle's longitudinal direction, the installation space of the radiator 2 can be designed particularly advantageously, in particular, kept particularly small.

[0047] In a further embodiment, the radiator 2 is provided with at least one fan 28, by means of which the air can be conveyed through the air ducts 4 or 4b in one of the sub-regions 6, 7, in particular in the second sub-region 7. The first sub-region 6 is thus provided, for example, for driving operation of the motor vehicle 1, in which the motor vehicle 1 is moving and the air flows through the air ducts 4 or 4a as the air. Furthermore, the second sub-region 7 is provided, for example, for fan operation, in which the motor vehicle 1 is, for example, stationary, the air flowing through the air ducts 4 or 4b is conveyed through the air ducts 4 or 4b by the fan 28. The fan 28 is arranged, for example, behind the duct elements 3 or the air ducts 4 in the direction of travel or the longitudinal direction of the motor vehicle 1.

[0048] Fig. 8 shows the radiator 2 in a schematic perspective view according to a further embodiment, in which, in one of the partial regions 6, 7, in particular in the second partial region 7, at least one outer side 29 of the air ducts 4 or of the radiator 2, which outer side faces outwardly in the direction opposite to the flow direction 25 in which the air can flow through the air ducts 4, is covered at least partially, in particular completely, by a cover element 30. This allows the aerodynamics, in particular the air resistance, of the motor vehicle 1 to be particularly improved. This means that the radiator 2, in particular the motor vehicle, is particularly aerodynamically advantageous. This can be achieved, for example, by preventing air from flowing through the air ducts 4b while the motor vehicle 1 is traveling in the second partial region 7, which is provided in particular for fan operation when the motor vehicle 1 is stationary.Furthermore, the package and / or styling of the motor vehicle 1 or the fan 28 can be particularly improved.

[0049] The outer side 29 is preferably an outer side facing forward in the direction of travel or the longitudinal direction of the motor vehicle 1. For example, it is provided that in the second partial area 7, a second outer side 31 of the air ducts 4b facing outward in the direction of flow direction 25 is covered at least partially, in particular completely, by a second cover element 32, in particular spaced apart from the cover element 30. This is, for example, in Fig. 9, which shows a schematic and perspective view of the radiator 2, in particular obliquely from the rear. For example, the second outer side 31 is an outer side of the radiator 2 facing rearward in the longitudinal direction of the vehicle or the direction of travel of the motor vehicle 1. List of reference symbols 1 motor vehicle 2 coolers 3 line elements 3a first line elements 3b second line elements 4 air ducts 4a first air ducts 4b second air ducts 5 cable cross-sections 5a first cable cross-sections 5b second cable cross-sections 6 first sub-area 7 second sub-area 8 channel cross-sections 8a first channel cross-sections 8b second channel cross-sections 9 cooling fins 10 side panel 11 Fastening element 12 second side part 13 Entrance opening 13a first entrance opening 13b second inlet opening 14 first length range 15 second length range 16 third length range 17 Exit opening 17a first exit opening 17b second outlet opening 18 Separator 19 Cooling circuit 19a first cooling circuit 19b second cooling circuit 20 Management area 21 first facility 22 second facility 23 second separating element 24 fourth length range 25 Flow direction 26 first length 27 second length 28 fans 29 Outside 30 cover element 31 second outside 32 second cover element

Claims

[1] Radiator (2) for a motor vehicle (1), comprising a plurality of line elements (3) through which a coolant can flow, between which air ducts (4) are arranged through which air can flow, whereby heat can be transferred between the air flowing through the air ducts (4) and the coolant flowing through the line elements (3), characterized by that the line cross-sections (5) of the line elements (3) through which the coolant can flow are different from one another in at least two different partial areas (6, 7) of the cooler (2) and / or the channel cross-sections (8) of the air channels (4) through which the air can flow are different from one another in different partial areas (6, 7) of the cooler (2), wherein • the cooler (2) has at least one fan (28) by means of which, with respect to the first and the second partial area (6, 7), the air can be conveyed through the air ducts (4) exclusively in the second partial area (7). [2] Cooler (2) according to claim 1, characterized by that cooling fins (9) which at least partially delimit the channel cross-sections (8) of the air channels (4) are arranged between the line elements (3), via which cooling fins heat can be transferred from the respective line element (3) to the air flowing through the respective air channel (4) and thereby flowing around the respective cooling fin (9). [3] Cooler (2) according to claim 1 or 2, characterized by at least one side part (10) via which the respective line element (3) can be supplied with the coolant flowing through the respective line element (3) and / or the coolant flowing through the respective line element (3) can be discharged from the respective line element (3). [4] Cooler (2) according to one of the preceding claims, characterized bythat the line elements (3a) arranged in a first of the sub-regions (6) are fluidically connected to the line elements (3b) arranged in a second of the sub-regions (7). [5] Cooler (2) according to one of claims 1 to 3, characterized by that the line elements (3a) arranged in a first of the sub-regions (6) are fluidically separated from the line elements (3b) arranged in a second of the sub-regions (7). [6] Cooler (2) according to claim 5, characterized bythat the radiator (2) is provided for cooling at least two devices (21, 22) of the motor vehicle (1) which are designed separately from the radiator (2), wherein the coolant flowing through the line elements (3a) arranged in the first partial region (6) is provided exclusively for cooling a first of the devices (21) with respect to the devices (21, 22), and the coolant flowing through the line elements (3b) arranged in the second partial region (7) is provided exclusively for cooling the second of the devices (22) with respect to the devices (21, 22). [7] Cooler (2) according to one of the preceding claims, characterized by that the line elements (3) extend to different distances in the partial regions (6, 7) along a flow direction (25) in which the air ducts (4) can be flowed through by the air. [8] Cooler (2) according to one of the preceding claims, characterized byin that in one of the partial regions (6, 7) at least one outer side (29) of the air channels (4) facing outwards in the opposite direction of flow (25) in which the air channels (4) can be flowed through is covered at least in regions by a covering element (30). [9] Motor vehicle (1) with a radiator (2) according to one of the preceding claims.

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