Elastocaloric heat pump

Abstract

In order to provide an elastocaloric heat pump which realizes the temperature control of a cooling medium with low moving masses and meets high robustness requirements, an elastocaloric heat pump (100) comprising a housing (10), at least one first cooling medium channel (11, 11a, 11b, 11c) and at least one second cooling medium channel (13, 13a, 13b, 13c), at least one elastocaloric element (17a, 17b, 17c), and a drive device (24) is proposed, wherein the at least one elastocaloric element (17a, 17b, 17c) is connected with a first end (19) directly or indirectly to the drive device (24) and with a second end (21) is fixedly or rotatably connected to the housing (10), wherein the drive device (24) is designed to drive the first end (19) of the at least one elastocaloric element (17a, 17b, 17c) cyclically so that the at least one elastocaloric element (17a, 17b,17c) is cyclically stretched and, by utilizing the elastocaloric effect, heat is transferred from the first cooling medium channel (11, 11a, 11b, 11c) to the second cooling medium channel (13, 13a, 13b, 13c).

Description

[0001] The present invention relates to an elastocaloric heat pump comprising a housing, at least one first cooling medium channel and at least one second cooling medium channel, further comprising a drive device.

[0002] Furthermore, the present invention relates to a motor vehicle with an elastocaloric heat pump.

[0003] Elastocaloric heat pumps can be used to increase the efficiency of heat pumps, for example, in motor vehicles. Elastocaloric heat pumps utilize the elastocaloric effect, whereby cyclic deformation of an elastocaloric material causes a reversible temperature change, which can be used to transfer heat from a cooler coolant stream to a warmer coolant stream.

[0004] WO 2021 023 680 A1 discloses a heat pump system comprising a first core and a second core made of a shape memory alloy, a material with negative thermal expansion, or an elastocaloric material. The second core is positioned in a cascade arrangement with the first core and configured to change its state in response to a fluid heated by the first core.

[0005] From DE 10 2021 209 740 A1 a heat pump is known, comprising an elastocaloric element, a first coolant channel on a cold side for a first coolant flow and a second coolant channel on a hot side for a second coolant flow, a first drive element and a second drive element, wherein the elastocaloric element is clamped on both sides between the first drive element and the second drive element, wherein the first drive element and the second drive element are designed to move the elastocaloric element cyclically back and forth between the first coolant channel and the second coolant channel and to deform the elastocaloric element cyclically.

[0006] DE 10 2020 207 876 A1 discloses a system for heating and / or cooling an interior of a vehicle, wherein air ducts are guided at least partially through the body of the vehicle and wherein an elastocaloric system is arranged within a section of the air ducts, which is configured to heat and cool the air flows through the air ducts.

[0007] DE 10 2018 200 376 A1 discloses a heat exchange device comprising elastocaloric bands made of elastocaloric material and heat-conducting elements. These are designed such that a biconvex section of a heat-conducting element engages and deforms at least one elastocaloric band, thereby achieving an elastocaloric effect and enabling heat conduction between the at least one elastocaloric band and the biconvex section of the heat-conducting element. Furthermore, they are designed such that a planar section of a further heat-conducting element is in contact with the elastocaloric band in its undeformed state, enabling heat conduction between the planar section of the further heat-conducting element and the at least one elastocaloric band. The heat-conducting elements are each designed with both a biconvex section and a planar section.

[0008] DE 10 2021 211 702 A1 discloses a generic device for heating and / or cooling fluid, wherein the device comprises one or more chambers with respective elastocaloric elements, an actuating unit, and a valve unit, wherein fluid is selectively passed through the chambers. An air conditioning system with such a device is also disclosed.

[0009] In order to provide an elastocaloric heat pump which has a compact design and in which the maximum drive torque required for operation is reduced, DE 10 2022 203 994 A1 proposes a heat pump comprising a first coolant channel for a first coolant flow, a second coolant channel for a second coolant flow, at least one first elastocaloric element, at least one second elastocaloric element and a drive element, wherein the first elastocaloric element is arranged in the first coolant channel, wherein the second elastocaloric element is arranged in the second coolant channel, wherein the drive element is designed to cyclically deform the first elastocaloric element and to cyclically deform the second elastocaloric element, wherein it is further provided thatthat the first elastocaloric element and the second elastocaloric element and the drive element are arranged and connected to one another in such a way that the sum of the amount of the relative change in length of the first elastocaloric element and the amount of the relative change in length of the second elastocaloric element is always greater than zero.

[0010] CN 1 14 992 903 A relates to a two-stage elastic heat cascade refrigerator and a cooling method therefor. The refrigerator comprises a guide rail, a motor, a heat-conducting fin, a low-temperature heat source, and a high-temperature heat sink mounted on a frame; a first-stage sliding block and a second-stage sliding block installed on the guide rail and connected to one end of a first-stage shape memory alloy and one end of a second-stage shape memory alloy, respectively; the other end of the first-stage shape memory alloy is connected to one end of a first-stage connecting rod. The other end of the first-stage connecting rod and the other end of the second-stage shape memory alloy are pivotally connected to both sides of the second-stage connecting rod by respective rotary shafts.The heat-conducting fin is arranged between the first-stage shape memory alloy and the second-stage shape memory alloy, the low-temperature heat source is arranged on the other side of the first-stage shape memory alloy, and the high-temperature heat sink is arranged on the other side of the second-stage shape memory alloy. This achieves elastic cascade cooling, expands the system temperature range, and achieves high efficiency and energy savings.

[0011] CN 1 14 992 904 A relates to a two-stage elastic thermal cooling system and a cooling method therefor. The system comprises a heat source mounted on a frame, a heat accumulator, a heat sink, a motor, and a first guide rail. The end surface of the motor and the bottom surface of the frame are inclined at an included angle and connected to the guide rail for power output. A support structure is attached to the lead screw by a lead screw nut. One end surface of the support structure is fixed to the lead screw nut, and the other end surface of the support structure is connected to two horizontally arranged second clamps by connecting rods.The two ends of the two second clamps are respectively connected to second guide rails via second guide rail T-nuts. The second guide rails are arranged vertically in parallel. The upper ends of the second guide rails are respectively fixed to the first guide rails via first guide rail T-nuts. The first guide rails are arranged horizontally. Two first clamps are connected between the upper ends of the second guide rails by second guide rail sliding blocks. The two groups of shape memory alloys are clamped between the two groups of clamps. The two groups of shape memory alloys are synchronously loaded or unloaded under the constraint of the guide rail and the spindle by driving the clamp, so that cooling is carried out under the condition of a wide cooling temperature range.

[0012] The present invention is based on the object of providing an elastocaloric heat pump which realizes the temperature control of a cooling medium with low moving masses and meets high robustness requirements.

[0013] To achieve the object underlying the invention, an elastocaloric heat pump comprising a housing, at least one first cooling medium channel and at least one second cooling medium channel, at least one elastocaloric element, and further comprising a drive device is proposed, wherein the at least one elastocaloric element is connected with a first end directly or indirectly to the drive device and is connected with a second end fixedly or rotatably to the housing, wherein the drive device is designed to cyclically displace the first end of the at least one elastocaloric element so that the at least one elastocaloric element is cyclically stretched and heat is transferred from the first cooling medium channel to the second cooling medium channel by utilizing the elastocaloric effect.

[0014] The elastocaloric element can, for example, be a band made of an elastocaloric material.

[0015] In this case, several elastocaloric elements, in particular several bands made of an elastocaloric material, can also be provided.

[0016] According to the invention, it is provided that the drive device cyclically displaces the first end of the at least one elastocaloric element connected thereto, so that the at least one elastocaloric element is cyclically stretched, that is to say compressed or stretched.

[0017] Due to the cyclic expansion of the elastocaloric element, a reversible temperature change is induced in the material of the elastocaloric element. This elastocaloric effect is utilized in the elastocaloric heat pump according to the invention to transfer heat from the first cooling medium channel to the second cooling medium channel.

[0018] According to the invention, it is further provided that the second end of the at least one elastocaloric element is fixedly or rotatably connected to the housing. Thus, the elastocaloric element is always clamped between the drive device and the housing. For the cyclic expansion of the elastocaloric element, only one drive device, namely the one to which the first end of the at least one elastocaloric element is connected, is required. This reduces the moving masses. Due to the reduced number of moving components, the robustness of the elastocaloric heat pump is increased.

[0019] The arrangement and / or orientation of the drive device with respect to the housing or in the housing can be selected such that the cyclic strain of the elastocaloric element is approximately 10%.

[0020] A liquid cooling medium can flow through the first cooling medium channel and / or the second cooling medium channel. Alternatively, the first cooling medium channel and / or the second cooling medium channel can be filled with another medium, such as a gas.

[0021] Furthermore, ribs or other structures that increase the contact surface with a cooling medium can be arranged in the interior of the first cooling medium channel and / or the second cooling medium channel.

[0022] Preferably, it can further be provided that the at least one first cooling medium channel is a cold channel and that the at least one second cooling medium channel is a hot channel.

[0023] In other words, during operation of the elastocaloric heat pump, heat is transferred from the cold runner to the hot runner.

[0024] It can be further advantageously provided that the drive device comprises a drive rod, in particular guided in at least one radial bearing, wherein the elastocaloric element is rigidly or rotatably fastened with the first end directly or indirectly to the drive rod and wherein the drive rod can preferably be moved cyclically by means of a cam drive or a crank drive.

[0025] The drive rod of the drive device is cyclically moved back and forth in a translational motion. The first end of the at least one elastocaloric element, which is directly or indirectly attached to the drive rod, follows this cyclical translational motion of the drive rod, thereby causing the cyclical elastic expansion, i.e., the compression or stretching, of the elastocaloric element.

[0026] Advantageously, a carriage can be provided, wherein the carriage is connected to the drive rod and wherein the elastocaloric element is rigidly or rotatably fastened to the carriage with the first end.

[0027] By providing a carriage, a defined connection point is provided for the first end of the at least one elastocaloric element.

[0028] The direction of the translational movement of the drive rod is preferably set such that a distance between the first end of the first elastocaloric element and the second end of the elastocaloric element varies cyclically.

[0029] It can preferably be provided that the drive rod and / or the at least one radial bearing are arranged pivotably, so that a direction of a translational movement of the drive rod can be changed and a degree of expansion of the at least one elastocaloric element can be adjusted.

[0030] By adjusting the direction of the translational movement of the drive rod, the cyclical movement of the first end relative to the second end of the at least one elastocaloric element can be adjusted. The greater the component of the translational movement along an imaginary line between the first end and the second end, the greater the expansion of the elastocaloric element. The direction of the translational movement preferably always has a component substantially perpendicular to the imaginary line between the first end and the second end. Therefore, the elastocaloric element is always pivoted about the connection point of the second end of the elastocaloric element to the housing. This pivoting movement can be used to cyclically bring the at least one elastocaloric element into thermal contact with the first cooling medium channel and / or with the second cooling medium channel.

[0031] It is therefore preferably provided that the at least one elastocaloric element is arranged between the first cooling medium channel and the second cooling medium channel and that the at least one elastocaloric element is alternately brought into thermal contact with the first cooling medium channel and the second cooling medium channel by the cyclic displacement.

[0032] In this process, the elastocaloric element is cyclically stretched simultaneously. Thus, the elastocaloric element can, for example, be in a relaxed state when in thermal contact with the first cooling medium channel and in an expanded state when in contact with the second cooling medium channel. In the relaxed state, the elastocaloric element has a low temperature and can thus absorb heat from the first cooling medium channel. In the tensioned state, the elastocaloric element has a high temperature and therefore transfers heat to the second cooling medium channel.

[0033] Preferably, the first cooling medium channel and / or the second cooling medium channel may comprise a thin layer, for example of less than 0.1 mm, of an elastic material having a high thermal conductivity coefficient.

[0034] The layer can be a graphite foil. This allows surface roughness and manufacturing tolerances to be compensated.

[0035] With further advantage, a plurality of first cooling medium channels, in particular a plurality of cold channels, and a plurality of second cooling medium channels, in particular a plurality of hot channels, and a plurality of elastocaloric elements can be provided, wherein one elastocaloric element is arranged between one of the first cooling medium channels and one of the second cooling medium channels, and wherein each of the elastocaloric elements is alternately brought into thermal contact with the respective first cooling medium channel and the respective second cooling medium channel by the cyclic displacement.

[0036] Each of the elastocaloric elements can be connected directly or indirectly to the drive device, in particular the drive rod, at its first end. Furthermore, each of the elastocaloric elements can be fixedly or rotatably connected to the housing at its second end.

[0037] Thus, by means of a single drive device, in particular a single drive rod, a plurality of elastocaloric elements can be cyclically stretched in order to transfer heat from the respective first cooling medium channels, in particular the cold channels, to the respective second cooling medium channels, in particular the hot channels, by utilizing the elastocaloric effect.

[0038] Furthermore, at least one heat storage element and at least two elastocaloric elements can preferably be provided, wherein the at least two elastocaloric elements are cyclically stretched, and by utilizing the elastocaloric effect, heat is transferred from the first cooling medium channel to the at least one heat storage element and wherein heat is transferred from the at least one heat storage element to the second cooling medium channel.

[0039] The use of a heat storage element thus creates a cascade or heat pump cascade. The temperature rise can be increased by using heat storage elements and the resulting cascade of the heat pump.

[0040] The heat storage element can be a solid body, a solid body or channel filled with a cooling medium, or a solid body or channel through which a cooling medium flows.

[0041] It is particularly preferably provided that the at least one heat storage element is arranged between the first cooling medium channel and the second cooling medium channel, that a first elastocaloric element is arranged between the first cooling medium channel and the heat storage element and is alternately brought into thermal contact with the first cooling medium channel and the heat storage element by the cyclical displacement, and that a second elastocaloric element is arranged between the heat storage element and the second cooling medium channel and is alternately brought into thermal contact with the heat storage element and the second cooling medium channel by the cyclical displacement.

[0042] The first elastocaloric element thus serves to transfer heat from the first cooling medium channel, in particular the cold channel, to the heat storage element, and the second elastocaloric element serves to transfer heat from the heat storage element to the second cooling medium channel, in particular to the hot channel.

[0043] Furthermore, a plurality of heat storage elements and further elastocaloric elements can be provided, wherein the plurality of heat storage elements are arranged between the first cooling medium channel and the second cooling medium channel, and wherein the further elastocaloric elements are each arranged between two heat storage elements and are alternately brought into thermal contact with the respective heat storage elements by the cyclical displacement.

[0044] Thus, it can be provided that a first elastocaloric element is arranged between the first cooling medium channel and a first heat storage element, and that a second elastocaloric element is arranged between a last heat storage element and the second cooling medium channel. The further elastocaloric elements are then each arranged between two heat storage elements.

[0045] By increasing the number of heat storage elements and using additional elastocaloric elements arranged between the heat storage elements, the increase in temperature lift caused by cascading can be further increased.

[0046] It is provided that an outer wall of the first cooling medium channel and / or of the second cooling medium channel and / or of the heat storage element is convexly curved, so that the at least one elastocaloric element is stretched by contact with the outer wall of the first cooling medium channel and / or of the second cooling medium channel and / or of the heat storage element.

[0047] The curved outer wall represents a contact area for the respective elastocaloric element. By contacting the curved outer wall, an additional strain is imposed on the respective elastocaloric element, which interacts synergistically with the strain generated by the drive device.

[0048] Furthermore, the preferably convex curvature of the outer wall increases the contact surface, i.e. the area of the contact region, with the respective elastocaloric element, thereby improving the temperature transfer.

[0049] A further solution to the problem underlying the invention consists in providing a motor vehicle with a heat pump as described above.

[0050] All of the above-described designs, features, advantages and functions of the heat pump can also be transferred to the heat pump of the motor vehicle.

[0051] The invention is explained in more detail below with reference to the accompanying figures. They show: Fig. 1 an elastocaloric heat pump with cascading, Fig. 2 an elastocaloric heat pump without cascading, Fig. 3 a cross-section through a cooling medium channel, Fig. 4 another elastocaloric heat pump, and Fig. 5 a motor vehicle with an elastocaloric heat pump.

[0052] In the figures, identical or corresponding parts are marked with the same reference numerals.

[0053] Fig. 1 shows an elastocaloric heat pump 100 in accordance with the invention. The elastocaloric heat pump 100 comprises a housing 10 and a first cooling medium channel 11, which is designed as a cold channel 12, and a second cooling medium channel 13, which is designed as a hot channel 14. A cooling medium flows through the first cooling medium channel 11 and the second cooling medium channel 13. Furthermore, the elastocaloric heat pump 100 has a first heat storage element 15 and a second heat storage element 16, which are arranged between the first cooling medium channel 11 and the second cooling medium channel 13. In the elastocaloric heat pump 100 according to Fig. 1, three elastocaloric elements 17a, 17b, 17c are provided, which are designed in the form of bands 18. A first elastocaloric element 17a is arranged between the first cooling medium channel 11 and the first heat storage element 15, a second elastocaloric element 17b is arranged between the second heat storage element 16 and the second cooling medium channel 13, and a third elastocaloric element 17c is arranged between the first heat storage element 15 and the second heat storage element 16.

[0054] Each of the elastocaloric elements 17a, 17b, 17c is connected to a carriage 20 at a first end 19. The elastocaloric elements 17a, 17b, 17c are each fixedly or rotatably connected to the housing 10 at a second end 21. The carriage 20 is connected to a drive rod 23 of a drive device 24, which is guided in radial bearings 22. The drive rod 23 of the drive device 24 is set into a cyclic translational movement by means of a cam drive 25. The direction 26 of the translational movement of the drive rod 23 is set relative to the extension directions of the elastocaloric elements 17a, 17b, 17c, so that the elastocaloric elements 17a, 17b, 17c are cyclically stretched by the translational movement of the drive rod 23 and are also alternately brought into thermal contact with the cooling medium channels 11, 13 or the heat storage elements 15, 16.

[0055] As a result, heat is transferred from the first cooling medium channel 11 to the first heat storage element 15 by means of the first elastocaloric element 17a. Heat is transferred from the first heat storage element 15 to the second heat storage element 16 by means of the third elastocaloric element 17c, and heat is transferred from the second heat storage element 16 to the second cooling medium channel 13 by means of the second elastocaloric element 17b.

[0056] The angle between the direction 26 of translational movement of the drive rod 23 and the extension directions of the elastocaloric elements 17a, 17b, 17c can be adjusted by pivoting the drive rod 23 or the radial bearings 22. This allows the maximum degree of extension of the elastocaloric elements 17a, 17b, 17c to be adjusted.

[0057] Fig. Figure 2 shows another elastocaloric heat pump 100 in accordance with the invention. Compared to the elastocaloric heat pump 100 according to Fig. 1, the elastocaloric heat pump 100 does not have any heat storage elements 15, 16. Instead, the elastocaloric heat pump 100 according to Fig. 2 a plurality of first cooling medium channels 11a, 11b, 11c, i.e. a plurality of cold channels 12, and a plurality of second cooling medium channels 13a, 13b, 13c, i.e. a plurality of hot channels 14. The elastocaloric elements 17a, 17b, 17c are each arranged between one of the plurality of first cooling medium channels 11a, 11b, 11c and one of the plurality of second cooling medium channels 13a, 13b, 13c.

[0058] Through the cyclic translational movement of the drive rod 23, the elastocaloric elements 17a, 17b, 17c are thus alternately brought into thermal contact with the respective first cooling medium channel 11a, 11b, 11c, i.e. the respective cold channel 12, and the respective second cooling medium channel 13a, 13b, 13c, i.e. the respective hot channel 14, and thus heat is transferred from the first cooling medium channels 11a, 11b, 11c to the second cooling medium channels 13a, 13b, 13c.

[0059] Fig. 3 shows a second cooling medium channel 13 in a cross-sectional view. The cooling medium channel 13 has a contact surface 27 for an elastocaloric element 17a. The contact surface 27 is part of a convexly curved outer wall 28 of the cooling medium channel 13. Due to the convex curvature of the outer wall 28, part of the expansion of the elastocaloric element 17a required for heat transfer can be applied during thermal contact. Ribs 29 are arranged within the cooling medium channel 13, which improve the heat transfer from the cooling medium channel 13 to the cooling medium flowing through the cooling medium channel 13. The contact surface 27 of the cooling medium channel 13 can be coated with an elastic, heat-conducting layer 30, for example, a graphite foil. In addition, the cooling medium channel 13 can be thermally insulated with a plastic layer 31 on the outer walls not used for heat transfer.

[0060] Fig. 4 shows another elastocaloric heat pump 100. The elastocaloric heat pump of the Fig. 4 has, like the elastocaloric heat pump of the Fig. 1, a housing 10 and a first cooling medium channel 11, which is designed as a cold channel 12, and a second cooling medium channel 13, which is designed as a hot channel 14. Furthermore, the elastocaloric heat pump 100 has two heat storage elements 15, 16, which are arranged between the first cooling medium channel 11 and the second cooling medium channel 13. Compared to the elastocaloric heat pump 100 according to Fig. 1, the second ends 21 of the elastocaloric elements 17a, 17b, 17c are not connected to the housing 10, but like the first ends 19, also to a slide 20a. Accordingly, the elastocaloric heat pump of the Fig. 4 a second drive device 24a with a drive rod 23a. Both drive rods 23, 23a are driven by a common cam drive 25.

[0061] Fig. 5 shows a motor vehicle 200 comprising an elastocaloric heat pump (100). List of reference symbols 100 Elastocaloric heat pump 200 motor vehicles 10 housings 11 First cooling medium channel 11a First cooling medium channel 11b First cooling medium channel 11c First cooling medium channel 12 cold runners 13 Second cooling medium channel 13a Second cooling medium channel 13b Second cooling medium channel 13c Second cooling medium channel 14 hot runner 15 First heat storage element 16 Second heat storage element 17a Elastocaloric element 17b Elastocaloric element 17c Elastocaloric element 18 volumes 19 First End 20 sleds 20a Sled 21 Second End 22 radial bearings 22a Radial bearing 23 Drive rod 23a Drive rod 24 Drive device 24a Drive device 25 Cam drive 26 direction 27 Contact surface 28 Exterior wall 29 rib 30 Thermally conductive layer 31 plastic layer

Claims

[1] Elastocaloric heat pump (100) comprising a housing (10), at least one first cooling medium channel (11, 11a, 11b, 11c) and at least one second cooling medium channel (13, 13a, 13b, 13c), at least one elastocaloric element (17a, 17b, 17c) and a drive device (24), wherein the at least one elastocaloric element (17a, 17b, 17c) is connected with a first end (19) directly or indirectly to the drive device (24) and is connected with a second end (21) fixedly or rotatably to the housing (10), wherein the drive device (24) is designed to cyclically displace the first end (19) of the at least one elastocaloric element (17a, 17b, 17c) so that the at least one elastocaloric element (17a, 17b, 17c) is cyclically stretched and, by utilizing the elastocaloric effect, heat is transferred from the first cooling medium channel (11, 11a, 11b, 11c) to the second cooling medium channel (13, 13a, 13b, 13c), characterized bythat an outer wall (28) of the first cooling medium channel (11, 11a, 11b, 11c) and / or of the second cooling medium channel (13, 13a, 13b, 13c) and / or of the heat storage element (15, 16) is convexly curved, so that the at least one elastocaloric element (17a, 17b, 17c) is stretched by contact with the outer wall (28) of the first cooling medium channel (11, 11a, 11b, 11c) and / or of the second cooling medium channel (13, 13a, 13b, 13c) and / or of the heat storage element (15, 16). [2] Elastocaloric heat pump (100) according to claim 1, characterized byin that the drive device (24) comprises a drive rod (23), which is guided in particular in at least one radial bearing (22), wherein the elastocaloric element (17a, 17b, 17c) is rigidly or rotatably fastened with the first end (19) directly or indirectly to the drive rod (23) and wherein the drive rod (23) can preferably be moved cyclically by means of a cam drive (25) or a crank drive, wherein more preferably a carriage (20) is provided, wherein the carriage (20) is connected to the drive rod (23) and wherein the elastocaloric element (17a, 17b, 17c) is rigidly or rotatably fastened with the first end (19) to the carriage (20). [3] Elastocaloric heat pump (100) according to claim 2, characterized bythat the drive rod (23) and / or the at least one radial bearing (22) are arranged pivotably, so that a direction (26) of a translational movement of the drive rod (23) can be changed and a degree of expansion of the at least one elastocaloric element (17a, 17b, 17c) is adjustable. [4] Elastocaloric heat pump (100) according to one of the preceding claims, characterized by that the at least one elastocaloric element (17a, 17b, 17c) is arranged between the first cooling medium channel (11, 11a, 11b, 11c) and the second cooling medium channel (13, 13a, 13b, 13c) and that the at least one elastocaloric element (17a, 17b, 17c) is brought into thermal contact with the first cooling medium channel (11, 11a, 11b, 11c) and the second cooling medium channel (13, 13a, 13b, 13c) alternately by the cyclic displacement. [5] Elastocaloric heat pump (100) according to one of the preceding claims, characterized bythat a plurality of first cooling medium channels (11, 11a, 11b, 11c), in particular a plurality of cold channels (12), and a plurality of second cooling medium channels (13, 13a, 13b, 13c), in particular a plurality of hot channels (14), and a plurality of elastocaloric elements (17a, 17b, 17c) are provided, wherein one elastocaloric element (17a, 17b, 17c) is arranged between one of the first cooling medium channels (11, 11a, 11b, 11c) and one of the second cooling medium channels (13, 13a, 13b, 13c), and that each of the elastocaloric elements (17a, 17b, 17c) is alternately brought into thermal contact with the respective first cooling medium channel (11, 11a, 11b, 11c) and the respective second cooling medium channel (13, 13a, 13b, 13c). [6] Elastocaloric heat pump (100) according to one of the preceding claims, characterized bythat at least one heat storage element (15, 16) and at least two elastocaloric elements (17a, 17b, 17c) are provided, wherein the at least two elastocaloric elements (17a, 17b, 17c) are cyclically stretched, and by utilizing the elastocaloric effect, heat is transferred from the first cooling medium channel (11, 11a, 11b, 11c) to the at least one heat storage element (15, 16) and wherein heat is transferred from the at least one heat storage element (15, 16) to the second cooling medium channel (13, 13a, 13b, 13c). [7] Elastocaloric heat pump (100) according to claim 6, characterized bythat the at least one heat storage element (15, 16) is arranged between the first cooling medium channel (11, 11a, 11b, 11c) and the second cooling medium channel (13, 13a, 13b, 13c), that a first elastocaloric element (17a) is arranged between the first cooling medium channel (11, 11a, 11b, 11c) and the heat storage element (15, 16) and is brought into thermal contact with the first cooling medium channel (11, 11a, 11b, 11c) and the heat storage element (15, 16) by the cyclical displacement, and that a second elastocaloric element (17b) is arranged between the heat storage element (15, 16) and the second cooling medium channel (13, 13a, 13b, 13c) and is brought into thermal contact with the cyclic displacement is alternately brought into thermal contact with the heat storage element (15, 16) and the second cooling medium channel (13, 13a, 13b, 13c). [8] Elastocaloric heat pump (100) according to claim 7, characterized bythat a plurality of heat storage elements (15, 16) and further elastocaloric elements (17c) are provided, that the plurality of heat storage elements (15, 16) are arranged between the first cooling medium channel (11, 11a, 11b, 11c) and the second cooling medium channel (13, 13a, 13b, 13c), that the further elastocaloric elements (17c) are each arranged between two heat storage elements (15, 16) and are alternately brought into thermal contact with the respective heat storage elements (15, 16) by the cyclical displacement. [9] Motor vehicle (200) comprising an elastocaloric heat pump (100) according to one of the preceding claims.

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