Heat radiator assemblies, battery packs, and vehicles

Abstract

A battery pack is provided in a vehicle. The battery pack includes a heat sink assembly. The heat sink assembly includes a first heat sink, a second heat sink, a third heat sink, and at least one fourth heat sink. The third heat sink is connected between the first heat sink and the second heat sink. The third heat sink is in separate communication with the first heat sink and the second heat sink, at least one fourth heat sink is connected between the first heat sink and the second heat sink, the fourth heat sink is in separate communication with the first heat sink and the second heat sink, the at least one fourth heat sink and the third heat sink are arranged side by side between the first heat sink and the second heat sink, both the first heat sink and the second heat sink are stamping plate type heat sinks, and the fourth heat sink is a harmonica shaped tube heat sink.

Description

Technical Field

[0001] Cross - reference to Related Applications This disclosure claims priority and the benefit thereof to Chinese Patent Application No. 202221059926.4, entitled "HEAT RADIATOR ASSEMBLY, BATTERY PACK, AND VEHICLE", filed on April 29, 2022 by BYD Co., Ltd. The entire content of the above - referenced application is incorporated herein by reference.

[0002] This disclosure relates to the technical field of batteries, and more particularly, to a radiator assembly, a battery pack, and a vehicle.

Background Art

[0003] In related technologies, some batteries dissipate heat through radiators made of stamped brazed plates. Radiators made of stamped brazed plates have a relatively large overall weight and high cost, so they not only do not contribute to improving the energy density of the entire pack, but also have a complex internal flow - path design and a relatively long flow - path, resulting in relatively large losses. As a result, a relatively large temperature difference occurs between various parts of the battery, which does not contribute to the balanced cooling of the battery.

Summary of the Invention

Problems to be Solved by the Invention

[0004] This disclosure aims to solve at least one of the technical problems existing in related technologies. In view of this, this disclosure provides a radiator assembly. The radiator assembly has good heat dissipation performance and is light in weight.

Means for Solving the Problems

[0005] This disclosure further provides a battery pack.

[0006] This disclosure further provides a vehicle.

[0007] The heat sink assembly according to this disclosure comprises a first heat sink, a second heat sink in which the second heat sink and the first heat sink are arranged opposite each other, a third heat sink in which the third heat sink is connected between the first and second heat sinks, the third heat sink communicates individually with the first and second heat sinks, a joint is provided in the third heat sink, and a main heat dissipation region is formed surrounded by the third heat sink, the second heat sink, and the first heat sink, and at least one fourth heat sink. The system includes at least one fourth heat sink located within the main heat dissipation region, at least one fourth heat sink connected between the first and second heat sinks, the fourth heat sink communicating individually with the first and second heat sinks, at least one fourth heat sink and a third heat sink arranged side-by-side between the first and second heat sinks, both the first and second heat sinks being stamping plate type heat sinks, and the fourth heat sink being a harmonica-shaped tube heat sink.

[0008] Therefore, by placing at least one fourth heat sink between the first and second heat sinks, configuring both the first and second heat sinks as stamping plate type heat sinks, and configuring the fourth heat sink as a harmonica-shaped tube heat sink, only a portion of the structure within the heat sink assembly becomes a stamping plate type heat sink. As a result, the weight of the heat sink assembly can be reduced compared to a heat sink assembly of related technology where the entire structure is a stamping plate type heat sink. In addition, the relatively simple flow path design within the harmonica-shaped tube heat sink helps to optimize the heat dissipation performance of the heat sink assembly.

[0009] In one embodiment, at least one open fixing groove is provided on the side of the first and second heat sinks facing the fourth heat sink (40), and the end of the fourth heat sink is fixed within the corresponding fixing groove.

[0010] In one embodiment, the first heat sink and the second heat sink each include a first upper plate and a first lower plate, respectively. The first lower plate is fixed below the first upper plate. Flow channels and fixing grooves are formed within the first lower plate by stamping. The fixing grooves communicate with the flow channels, which communicate with a fourth heat sink via the fixing grooves.

[0011] In one embodiment, the width of the fixing groove is the same as the width of the corresponding fourth radiator, and the end of the fourth radiator is welded into the corresponding fixing groove.

[0012] In one embodiment, the depth of the fixing groove is equal to the height of the corresponding fourth heat sink.

[0013] In one embodiment, first mating surfaces are arranged on both sides of the end of the fourth heat sink, and second mating surfaces are arranged on both sides of the fixing groove corresponding to the fourth heat sink, with the first mating surfaces coinciding with the second mating surfaces.

[0014] In one embodiment, the first joining surface and the second joining surface are each either a curved surface, an arcuate surface, or an inclined plane.

[0015] In one embodiment, a plurality of fourth heat sinks are arranged, and the plurality of fourth heat sinks are spaced apart within the main heat dissipation region.

[0016] In one embodiment, a first main channel and a second main channel are arranged in a first heat sink, spaced apart in the longitudinal direction of the first heat sink; a third main channel and a fourth main channel are arranged in a second heat sink, spaced apart in the width direction of the second heat sink. A plurality of fourth heat sinks include a first portion, a second portion, and a third portion, the first main channel communicates with the third main channel via the first portion of the plurality of fourth heat sinks, the first main channel communicates with the fourth main channel via the second portion of the plurality of fourth heat sinks, and the fourth main channel communicates with the second main channel via the third portion of the plurality of fourth heat sinks.

[0017] In one embodiment, at least two first branched channels are arranged within a first heat sink, the at least two first branched channels including a first sub-channel and a second sub-channel, the first main channel communicating with a first portion of a plurality of fourth heat sinks via the first sub-channel, the first main channel communicating with a second portion of the plurality of fourth heat sinks via the second sub-channel, and / or, at least two second branched channels are arranged within the first heat sink, the third portion of the plurality of fourth heat sinks communicating with a second main channel via at least two portions of the second branched channels, the second main channel communicating with a third heat sink via at least two other portions of the second branched channels.

[0018] In one embodiment, at least two fourth branching channels are arranged within the second heat sink, the at least two fourth branching channels include a first channel and a second channel, the second portion of the plurality of fourth heat sinks communicates with the fourth main channel via the first channel, the fourth main channel communicates with the plurality of fourth heat sinks third portion via the second channel, and / or, at least two third branching channels are arranged within the second heat sink, the first portion of the plurality of fourth heat sinks communicates with the third main channel via at least two portions of the third branching channels, the third main channel communicates with the third heat sink via at least two other portions of the third branching channels.

[0019] In one embodiment, a fifth main channel and a sixth main channel are arranged within a third heat sink, and the fifth and sixth main channels are spaced apart in the longitudinal direction of the third heat sink. The fifth main channel is in communication with the second main channel, and the sixth main channel is in communication with the third main channel.

[0020] In one embodiment, separation sections are arranged on the outside of both ends of the fourth main channel. The separation section on the outside of one end of the fourth main channel separates a portion of the third branch channel from the first channel, and the separation section on the outside of the other end of the fourth main channel separates another portion of the third branch channel from the second channel.

[0021] In one embodiment, an inlet interface and an outlet interface are arranged at the connecting portion. The fifth main flow path communicates with the outlet interface, and the sixth main flow path communicates with the inlet interface.

[0022] In one embodiment, the third radiator is a stamping plate type radiator. The third radiator includes a second upper plate and a second lower plate. The second lower plate is fixed under the second upper plate. In the second lower plate, flow paths are formed by stamping. The flow paths communicate with the first radiator and the second radiator respectively, and the connecting portion is arranged on the second upper plate.

[0023] In one embodiment, the radiator assembly further includes a fifth radiator and a sixth radiator. The fifth radiator is connected between the first radiator and the third radiator, and the fifth radiator communicates with the first radiator and the third radiator individually. The sixth radiator is connected between the second radiator and the third radiator, and the sixth radiator communicates with the second radiator and the third radiator individually. The fifth radiator and the sixth radiator are both harmonic shape tube radiators.

[0024] In one embodiment, the third radiator is a stamping plate type radiator or a harmonic shape tube radiator.

[0025] A battery pack according to an embodiment of the present disclosure includes a radiator assembly according to an embodiment of the first aspect.

[0026] In one embodiment, the battery pack includes a plurality of battery cores. The battery cores have electrodes. The electrodes correspond to the main heat dissipation regions of the radiator assembly.

[0027] In one embodiment, the plurality of battery cores are arranged in the longitudinal direction of the first radiator and the second radiator.

[0028] A vehicle according to an embodiment of the present disclosure includes the battery pack described above.

[0029] In one embodiment, the vehicle includes an air conditioning system. The connection part of the radiator assembly is connected to the air conditioning system pipeline in the vehicle, and the connection part and the air conditioning system pipeline are connected in parallel within the air conditioning system of the vehicle.

[0030] Further aspects and advantages of the present disclosure are given in the following description, some of which will be apparent from the following description or can be learned from the practice of the present disclosure.

[0031] The above and / or additional aspects and advantages of the present disclosure will become apparent and understandable in the description of the embodiments made with reference to the following attached drawings.

Brief Description of the Drawings

[0032] [Figure 1] It is a schematic diagram of a battery pack according to an embodiment of the present disclosure. [Figure 2] It is a schematic diagram of a radiator assembly according to an embodiment of the present disclosure. [Figure 3] It is a schematic diagram of a radiator assembly according to an embodiment of the present disclosure. [Figure 3B] It is a schematic diagram of the fourth radiator of the radiator assembly according to an embodiment of the present disclosure. [Figure 4] It is an exploded view of the first radiator or the second radiator according to an embodiment of the present disclosure. [Figure 5] It is an exploded view of the third radiator according to an embodiment of the present disclosure. [Figure 6] It is a schematic diagram of the fourth radiator according to an embodiment of the present disclosure. [Figure 7] It is a schematic diagram of the fourth radiator and the first radiator according to an embodiment of the present disclosure. [Figure 8] It is a schematic diagram of region A in FIG. 7. [Figure 9] It is a schematic diagram of the connection part according to an embodiment of the present disclosure. [Figure 10] It is a schematic diagram of a vehicle according to an embodiment of the present disclosure. [Modes for carrying out the invention]

[0033] Embodiments of the present disclosure are described in detail below, and embodiments described with reference to the accompanying drawings are illustrative.

[0034] A heat sink assembly 100 according to one embodiment of the present disclosure will be described below with reference to Figures 1 to 9. The heat sink assembly 100 may be applied to a battery pack 1000.

[0035] Referring to Figures 1 to 9, the heat sink assembly 100 according to this embodiment of the present disclosure may mainly include a first heat sink 10, a second heat sink 20, a third heat sink 30, and at least one fourth heat sink 40.

[0036] The first heat sink 10 and the second heat sink 20 are arranged opposite each other. The third heat sink 30 is connected between the end of the first heat sink 10 and the end of the second heat sink 20, and the third heat sink 30 communicates individually with the first heat sink 10 and the second heat sink 20. A connecting portion 31 is provided on the third heat sink 30. The main heat dissipation region 32 is formed by the third heat sink 30, the second heat sink 20, and the first heat sink 10. At least one fourth heat sink 40 is located within the main heat dissipation region 32. At least one fourth heat sink 40 is connected between the first heat sink 10 and the second heat sink 20, and the fourth heat sink 40 communicates individually with the first heat sink 10 and the second heat sink 20. At least one fourth heat sink 40 and a third heat sink 30 are arranged side by side between the first heat sink 10 and the second heat sink 20.

[0037] Specifically, the refrigerant may enter from the connecting portion 31 of the third heat sink 30 and flow into one of the first heat sink 10 and the second heat sink 20. Since the first heat sink 10, the second heat sink 20, and the third heat sink 30 jointly define the main heat dissipation region 32, the refrigerant in one of the first heat sink 10 and the second heat sink 20 may enter the main heat dissipation region 32 and then enter the other of the first heat sink 10 and the second heat sink 20 from the main heat dissipation region 32. Subsequently, the refrigerant returns to the third heat sink 30 from the other of the first heat sink 10 and the second heat sink 20, and flows out from the connecting portion 31 of the third heat sink 30, thereby circulating the refrigerant within the heat sink assembly 100. If the heat sink assembly 100 is applied to a battery, cooling circulation of the refrigerant can be achieved on the battery.

[0038] Referring to Figures 2 and 3, at least one fourth radiator 40 is located within the main heat dissipation region 32, and at least one fourth radiator 40 is connected between the first radiator 10 and the second radiator 20. Thus, the refrigerant in one of the first radiator 10 and the second radiator 20 may flow into the fourth radiator 40 in the main heat dissipation region 32, and then flow from the fourth radiator 40 to the other of the first radiator 10 and the second radiator 20. Such a configuration not only ensures the circulation of the refrigerant but also increases the flow velocity of the refrigerant, thereby improving the cooling efficiency.

[0039] Furthermore, the first heat sink 10 and the second heat sink 20 may both be configured as stamping plate type heat sinks, and the fourth heat sink 40 may be configured as a harmonica-shaped tube heat sink. Specifically, the first heat sink 10 and the second heat sink 20 are both configured as stamping plate type heat sinks. Stamping plate type heat sinks have a relatively large number of flow channels 122 for the coolant to flow inside, and stamping plate type heat sinks have a relatively large surface area in contact with the outside world. Therefore, the cooling efficiency of the heat sink assembly 100 can be improved. The adoption of a harmonica-shaped tube heat sink reduces the weight of the heat sink assembly 100, reduces the manufacturing cost of the heat sink assembly 100, and ensures uniform heat dissipation of the battery, thereby improving the energy density of the battery pack 1000. However, the disclosure is not limited thereto.

[0040] Furthermore, when the harmonica-shaped tube radiator is placed within the main heat dissipation region 32, even if the harmonica-shaped tube radiator is not used to completely fill the main heat dissipation region 32, that is, even if there is a portion of the main heat dissipation region 32 that cannot contact the outside environment for heat dissipation, which may result in uneven heat dissipation of the radiator assembly 100, stamping plate type radiators are placed at both ends of the harmonica-shaped tube radiator, and the stamping plate type radiators can make complete contact with the outside environment. Therefore, after absorbing heat, the stamping plate type radiators can uniformly dissipate the heat to the surroundings, thereby achieving heat dissipation. Thus, uniform heat dissipation of the radiator assembly 100 can be guaranteed, under the premise of reducing the weight of the radiator assembly 100 and lowering the manufacturing cost of the radiator assembly 100.

[0041] In addition, the third heat sink 30 may be configured as a stamping plate type heat sink or a harmonica-shaped tube heat sink, but is not limited to these. The third heat sink 30 may be selectively configured depending on the requirements for applying the heat sink assembly 100 to various batteries and the manufacturing cost of the heat sink assembly 100. Specifically, if the power of the battery pack 1000 is relatively low, the battery pack 1000 generates relatively little heat, and the heat sink assembly 100 is sufficient to dissipate the heat from the battery pack 1000, the third heat sink 30 can be configured as a harmonica-shaped tube heat sink. Such a configuration reduces the weight of the heat sink assembly 100, making the battery pack 1000 lighter. If the battery pack 1000 generates a relatively large amount of heat, and the heat sink assembly 100 needs to sufficiently dissipate the heat from the battery pack 1000, the third heat sink 30 may be configured as a stamping plate type heat sink. Therefore, the applicability of the third heat sink 30 can be improved.

[0042] The heat sink assembly 100 of this disclosure can reduce the weight and cost of the heat sink assembly 100 while ensuring heat dissipation performance, compared to when the entire heat sink assembly is configured as a stamping plate type heat sink. Therefore, the heat sink assembly 100 of this disclosure can improve the heat dissipation uniformity and heat dissipation efficiency of the heat sink assembly 100 compared to when the heat sink assembly 100 is configured as a plurality of harmonica-shaped tube heat sinks.

[0043] Therefore, by placing at least one fourth heat sink 40 between the first heat sink 10 and the second heat sink 20, configuring both the first heat sink 10 and the second heat sink 20 as stamping plate type heat sinks, and configuring the fourth heat sink 40 as a harmonica-shaped tube heat sink, the weight of the heat sink assembly 100 can be reduced and the performance of the heat sink assembly 100 can be optimized while ensuring uniform heat dissipation of the heat sink assembly 100.

[0044] Referring to Figures 4 and 7, at least one open fixing groove 121 is provided on the side of the first heat sink 10 and the second heat sink 20 facing the fourth heat sink 40, and the end of the fourth heat sink 40 is fixed within the corresponding fixing groove 121. Such a configuration not only reduces the difficulty of assembling both ends of the fourth heat sink 40 together with the first heat sink 10 and the second heat sink 20, but also ensures the stability of the connection between both ends of the fourth heat sink 40 and the first heat sink 10 and the second heat sink 20, preventing the fourth heat sink 40 from moving between the first heat sink 10 and the second heat sink 20 and causing structural damage to the heat sink assembly 100, thereby improving the structural reliability of the heat sink assembly 100. In addition, the smooth flow of refrigerant between the first radiator 10 and the fourth radiator 40, and the smooth mutual flow of refrigerant between the second radiator 20 and the fourth radiator 40 are ensured, thereby further improving the heat dissipation performance of the radiator assembly 100.

[0045] Referring to Figures 4 and 7, the first radiator 10 and the second radiator 20 each mainly include a first upper plate 11 and a first lower plate 12. The first lower plate 12 is fixed below the first upper plate 11, and a flow path 122 and a fixing groove 121 are formed within the first lower plate 12 by stamping. The fixing groove 121 communicates with the flow path 122, which communicates with the fourth radiator 40 via the fixing groove 121. Specifically, the refrigerant may flow from the third radiator 30 into the flow path 122 of the first lower plate 12 of either the first radiator 10 or the second radiator 20. Since the flow path 122 communicates with the fixing groove 121, the refrigerant may flow from the flow path 122 of either the first radiator 10 or the second radiator 20 into the fixing groove 121. Next, the refrigerant flows from the fixed groove 121 into the fourth radiator 40, and from the fourth radiator 40 into the fixed groove 121 of the other of the first radiator 10 and the second radiator 20. Then, the refrigerant flows from the fixed groove 121 of the other of the first radiator 10 and the second radiator 20 into the flow path 122. Finally, the refrigerant returns to the third radiator 30 from the flow path 122 of the other of the first radiator 10 and the second radiator 20, and flows out from the third radiator 30. This configuration not only makes the structure of the first radiator 10 and the second radiator 20 more compact, but also ensures the smoothness and stability of the refrigerant flow between the first radiator 10 and the second radiator 20 and the fourth radiator 40.

[0046] Furthermore, the depth of the fixing groove 121 is equal to the height of the corresponding fourth heat sink 40, that is, the depth of the fixing groove 121 is equal to the height of the harmonica-shaped tube heat sink. When the end of the harmonica-shaped tube heat sink is positioned in the fixing groove 121, the end of the harmonica-shaped tube heat sink becomes flush with the surface of the first lower plate 12. Thus, the harmonica-shaped tube heat sink can be prevented from protruding from the first lower plate 12, and when the first upper plate 11 is positioned on the first lower plate 12, the situation in which only the harmonica-shaped tube heat sink is in contact with the first upper plate 11 and the flow path 122 on the first lower plate 12 cannot contact the first upper plate 11 can be avoided. Thus, the structure of the heat sink assembly 100 is further optimized and the heat dissipation efficiency of the heat sink assembly 100 is improved.

[0047] In addition, the first upper plate 11 is positioned on the first lower plate 12, and the first upper plate 11 can make uniform and sufficient contact with the outside environment. In this case, the first upper plate 11 can uniformly distribute the heat it receives into the multiple flow channels 122. The flow channels 122 are heated more uniformly, thereby improving the heat dissipation performance of the first heat sink 10 and the second heat sink 20.

[0048] Referring to Figures 7 and 8, the width of the fixing groove 121 is the same as the width of the corresponding fourth heat sink 40, and the end of the fourth heat sink 40 is welded into the corresponding fixing groove 121. This configuration allows for a fit between the fourth heat sink 40 and the fixing groove 121 without changing the shape of the end of the fourth heat sink 40, thereby facilitating the fitting between the fourth heat sink 40 and the fixing groove 121.

[0049] Furthermore, after the end of the fourth heat sink 40 is placed in the fixing groove 121, the fourth heat sink 40 and the fixing groove 121 are connected and fixed by welding. Thus, not only can the strength of the connection and fixing between the fourth heat sink 40 and the fixing groove 121 be improved, but the connection between the fourth heat sink 40 and the fixing groove 121 can be made simpler and more direct.

[0050] Referring to Figure 8, first joint surfaces 41 are located on both sides of the end of the fourth heat sink 40, and second joint surfaces 1211 are located on both sides of the fixing groove 121, with the first joint surfaces 41 coinciding with the second joint surfaces 1211. Specifically, the first joint surfaces 41 on both sides of the end of the fourth heat sink 40 coincide with the second joint surfaces 1211 on both sides of the fixing groove 121. This configuration allows both sides of the end of the fourth heat sink 40 and both sides of the fixing groove 121 to closely coincide, thereby improving the weld strength between the fourth heat sink 40 and the fixing groove 121, and thereby improving the structural reliability of the heat sink assembly 100.

[0051] Referring to Figure 8, the first joint surface 41 and the second joint surface 1211 are each either curved, arcuate, or inclined planes. Specifically, both sides of the ends of conventional harmonica-shaped tube radiators are arcuate, and both sides of the fixing groove 121 are curved. If the gap between the harmonica-shaped tube radiator and the fixing groove 121 is too large, welding defects may occur, and the pressure resistance and pressure rupture requirements after welding may not be met. By configuring the first joint surface 41 and the second joint surface 1211 to each be either curved, arcuate, or inclined planes, both sides of the ends of the fourth radiator 40 and both sides of the fixing groove 121 can be brought into closer contact. In addition, under the premise that the first joining surface 41 and the second joining surface 1211 are in close contact with each other, each of the first joining surface 41 and the second joining surface 1211 is selectively configured to be either a curved surface, an arc surface, or an inclined plane. This configuration not only facilitates the manufacture of the fixing groove 121 and the fourth heat sink 40, but also improves the applicability of the fourth heat sink 40, the first heat sink 10, and the second heat sink 20.

[0052] Referring to Figures 1 to 3, multiple fourth heat sinks 40 are arranged, and these multiple fourth heat sinks 40 are spaced apart within the main heat dissipation region 32. This configuration not only improves the heat dissipation efficiency of the heat sink assembly 100 but also makes the heat dissipation in the main heat dissipation region 32 more uniform, thereby preventing excessive temperature differences within the battery pack 1000 and promoting balanced cooling of the battery pack 1000.

[0053] In some embodiments of this disclosure, referring to Figures 3 and 3B, a first main channel 13 and a second main channel 14 are arranged within a first heat sink 10. The first main channel 13 and the second main channel 14 are spaced apart in the longitudinal direction of the first heat sink 10. A third main channel 21 and a fourth main channel 22 are arranged within a second heat sink 20, and the third main channel 21 and the fourth main channel 22 are spaced apart in the width direction of the second heat sink 20. A plurality of fourth heat sinks 40 include a first portion 42, a second portion 43, and a third portion 44. The first main channel 13 communicates with the third main channel 21 via the first portion 42 of the plurality of fourth heat sinks 40, and the first main channel 13 communicates with the fourth main channel 22 via the second portion 43 of the plurality of fourth heat sinks 40. The fourth main channel 22 communicates with the second main channel 14 via third portions 44 of the multiple fourth heat sinks 40. For example, in the example in Figure 3B, along the left-to-right direction, the three fourth heat sinks 40 on the left constitute the first portion 42, the fourth through eighth fourth heat sinks 40 constitute the second portion 43, and the multiple fourth heat sinks 40 from the ninth to the rightmost constitute the third portion 44. It should be noted that the above quantities are for ease of understanding and may be specially set according to the actual situation to suit the actual application.

[0054] In some embodiments of the present disclosure, referring to Figures 3 and 3B, at least two first branch channels 15 are arranged within a first heat sink 10, the at least two first branch channels 15 including a first sub-channel 151 and a second sub-channel 152, the first main channel 13 communicating with a first portion 42 of a plurality of fourth heat sinks 40 via the first sub-channel 151, the first main channel 13 communicating with a second portion 43 of the plurality of fourth heat sinks 40 via the second sub-channel 152, and / or at least two second branch channels 16 are arranged within the first heat sink 10, the third portion 44 of a plurality of fourth heat sinks 40 communicating with a second main channel 14 via at least two portions of the second branch channels 16, the second main channel 14 communicating with a third heat sink 30 via at least two other portions of the second branch channels 16. For example, in the example shown in Figure 3B, the first to seventh second branch channels 16, running from left to right, communicate with the third section 44, while the eighth and ninth second branch channels 16 communicate with the third heat sink 30. The second main channel 14 may communicate directly with the third heat sink 30, or it may communicate with the fifth heat sink 50 via another section of the second branch channel 16. Naturally, the first main channel 13 may communicate with the first section 42 and the second section 43, or alternatively, the first main channel 13 may communicate with the first section 42 via the first sub-channel 151, or alternatively, the first main channel 13 may communicate with the second section 43 via the second sub-channel 152.

[0055] In some embodiments of the present disclosure, referring to Figures 3 and 3B, at least two fourth branch channels 24 are arranged within the second heat sink 20, the at least two fourth branch channels 24 include a first channel 241 and a second channel 242, the second portion 43 of the plurality of fourth heat sinks 40 communicates with a fourth main channel 22 via the first channel 241, the fourth main channel 22 communicates with a third portion 44 of the plurality of fourth heat sinks 40 via the second channel 242, and / or at least two third branch channels 23 are arranged within the second heat sink 20, the first portion 42 of the plurality of fourth heat sinks 40 communicates with a third main channel 21 via at least two portions of the third branch channels 23, the third main channel 21 communicates with a third heat sink 30 via at least two other portions of the third branch channels 23. In other embodiments, the third main channel 21 may be in direct communication with the third heat sink 30, and the third main channel 21 may be in direct communication with the first portion 42 of a plurality of fourth heat sinks 40. For example, in the example of Figure 3B, five third branch channels 23 are shown, and the three third branch channels 23 adjacent to the left end of the second heat sink 20 may be a part of the third branch channel 23, and the two third branch channels 23 adjacent to the right end of the second heat sink 20 may be other parts of the third branch channel 23.

[0056] In some embodiments of the present disclosure, referring to Figures 3 and 3B, a fifth main channel 33 and a sixth main channel 34 are arranged within a third heat sink 30, the fifth main channel 33 and the sixth main channel 34 are spaced apart in the longitudinal direction of the third heat sink 30, the fifth main channel 33 is in communication with the second main channel 14, and the sixth main channel 34 is in communication with the third main channel 21.

[0057] Specifically, the refrigerant may enter the third main channel 21 of the second radiator 20 from the sixth main channel 34 of the third radiator 30 through another portion of the third branch channel 23. Next, the refrigerant enters a portion of the third branch channel 23 from the third main channel 21, and then enters the first portion 42 of the fourth radiator 40 from the portion of the third branch channel 23. Subsequently, the refrigerant enters the first sub-channel 151 of the first radiator 10 from the first portion 42 of the fourth radiator 40, and the refrigerant flows from the first sub-channel 151 of the first radiator 10 into the first main channel 13. Therefore, the refrigerant in the first main channel 13 flows from the second subchannel 152 through the second portion 43 of the fourth radiator 40 into the first channel 241 of the second radiator 20, and the refrigerant enters the fourth main channel 22 from the first channel 241. The refrigerant in the fourth main channel 22 enters a portion of the second branch channel 16 of the first radiator 10 through the third portion 44 from the second channel 242. Subsequently, the refrigerant enters the second main channel 14 from the second branch channel 16, and then enters the fifth main channel 33 of the third radiator 30 through another portion of the second branch channel 16, thereby achieving circulation of the refrigerant within the radiator assembly 100. With this configuration, assuming the same surface area, the refrigerant has a longer flow length within the heat sink assembly 100, which not only improves the heat dissipation efficiency of the heat sink assembly 100 but also reduces the volume of the heat sink assembly 100, thereby facilitating the placement of the heat sink assembly 100 within the battery pack 1000 and improving the density of the battery pack 1000.

[0058] Similarly, alternatively, the refrigerant may enter the second main flow path 14 of the first radiator 10 from the fifth main flow path 33 of the third radiator 30, and then flow in the opposite direction to the aforementioned circulation flow direction. Finally, the refrigerant enters the sixth main flow path 34 of the third radiator 30. The effect of flow path 122 is the same as described above and will not be described in detail again herein.

[0059] The first main flow path 13 and the second main flow path 14 are flow paths that flow only within the first heat sink 10, and the third main flow path 21 and the fourth main flow path 22 are flow paths that flow only within the second heat sink 20. The first branch flow path 15 is a flow path that the first main flow path 13 intervenes through when it communicates with the outside, and the second branch flow path 16 is a flow path that the second main flow path 14 intervenes through when it communicates with the outside. The third branch flow path 23 is a flow path that the third main flow path 21 intervenes through when it communicates with the outside, and the fourth branch flow path 24 is a flow path that the fourth main flow path 22 intervenes through when it communicates with the outside.

[0060] In some other embodiments of this disclosure, the refrigerant may enter one of the first radiator 10 and the second radiator 20 via a third radiator 30, and then enter a fourth radiator 40 via one of the first radiator 10 and the second radiator 20. Subsequently, the refrigerant enters the other of the first radiator 10 and the second radiator 20 via the fourth radiator 40. Finally, the refrigerant enters the third radiator 30 from the other of the first radiator 10 and the second radiator 20. Thus, the design of the flow path 122 of the radiator assembly 100 can be simplified while ensuring the heat dissipation performance of the radiators.

[0061] Referring to Figure 3, separation sections 70 are positioned on the outside of both ends of the fourth main channel 22. The separation section 70 on the outside of one end of the fourth main channel 22 separates a portion of the third branch channel 23 from the first channel 241, and the separation section 70 on the outside of the other end of the fourth main channel 22 separates another portion of the third branch channel 23 from the second channel 242. For example, the separation sections 70 may be configured to have a rounded shape. Thus, the fluid flow between the portion of the third branch channel 23, the other portion of the third branch channel 23, the first channel 241, and the second channel 242 does not affect each other.

[0062] For example, the separation section may be configured to have a rounded shape. This facilitates stamping, and the separation section can guide the flow of the refrigerant, thereby further improving the smoothness and stability of the refrigerant flow. The separation section can also reduce, to some extent, the noise generated by the refrigerant flow.

[0063] For example, initially, the refrigerant flows upward from the third main flow path 21, passes through the first section 42, enters the first main flow path 13, and moves downward within the first main flow path 13. Next, the refrigerant passes through the second section 43 and enters the fourth main flow path 22, and then flows upward from the fourth main flow path 22. Subsequently, the refrigerant passes through the third section 44 and enters the second main flow path 14. A portion of the refrigerant flows upward between the first radiator 10 and the second radiator 20, while another portion of the refrigerant moves downward, driven by pressure because the flow paths are in communication with each other.

[0064] Referring to Figure 9, the inlet interface 311 and the outlet interface 312 are arranged on the connecting section 31. The fifth main flow path 33 communicates with the outlet interface 312, and the sixth main flow path 34 communicates with the inlet interface 311. Specifically, by configuring the inlet interface 311 on the connecting section 31 to communicate with the sixth main flow path 34, and the outlet interface 312 on the connecting section 31 to communicate with the fifth main flow path 33, the inlet interface 311 and the sixth main flow path 34 communicate smoothly with each other, and the outlet interface 312 and the fifth main flow path 33 communicate smoothly with each other. Based on this, the difficulty in connecting the third heat sink 30 to the first heat sink 10 and the second heat sink 20 can be reduced.

[0065] Referring to Figure 9, an inlet 313 and an outlet 314 are further arranged in the connecting section 31. The inlet 313 communicates with the inlet interface 311, and the outlet 314 communicates with the outlet interface 312. Both the inlet interface 311 and the outlet interface 312 are located at the bottom of the connecting section 31, and both the inlet 313 and the outlet 314 are located outside the connecting section 31 in the longitudinal direction of the heat sink assembly 100. This configuration facilitates communication between the heat sink assembly 100 and the outside world and ensures that the inlet 313 is stably communicating with the inlet interface 311, and the outlet 314 is stably communicating with the outlet interface 312. For example, the pore size of the inlet 313 is larger than the pore size of the inlet interface 311, and the pore size of the outlet 314 is larger than the pore size of the outlet interface 312.

[0066] Referring to Figure 5, the third heat sink 30 is a stamping plate type heat sink. The third heat sink 30 includes a second upper plate 37 and a second lower plate 38. The second lower plate 38 is fixed below the second upper plate 37. A flow path 122 is formed within the second lower plate 38 by stamping. The connecting portion 31 is positioned on the second upper plate 37. Specifically, by configuring the third heat sink 30 as a stamping plate type heat sink, the contact area between the heat sink assembly 100 and the outside environment is further increased, thereby further improving the uniformity of heat dissipation of the heat sink assembly 100.

[0067] Furthermore, an inlet hole 35 and an outlet hole 36 are located on the second upper plate 37 of the third heat sink 30, and the inlet interface 311 of the connecting section 31 is in communication with the inlet hole 35. Therefore, the refrigerant can enter the flow path 122 of the third heat sink 30 through the connecting section 31. The outlet interface 312 and the outlet hole 36 on the connecting section 31 are in communication with each other, and as a result, the refrigerant can enter the connecting section 31 from the third heat sink 30, thereby further improving the efficiency of refrigerant circulation.

[0068] Referring to Figure 3, the heat sink assembly 100 further includes a fifth heat sink 50 and a sixth heat sink 60. The fifth heat sink 50 is connected between the first heat sink 10 and the third heat sink 30, and the sixth heat sink 60 is connected between the second heat sink 20 and the third heat sink 30. Both the fifth heat sink 50 and the sixth heat sink 60 may be configured as harmonica-shaped tube heat sinks. With such a configuration, the weight of a harmonica-shaped tube heat sink is lighter than that of a stamping plate type heat sink for the same length. Therefore, compared to the case where stamping plate type heat sinks are directly placed between the third heat sink 30 and the first heat sink 10 and between the third heat sink 30 and the second heat sink 20, configuring the fifth heat sink 50 and the sixth heat sink 60 as harmonica-shaped tube heat sinks makes it possible to further reduce the weight of the heat sink assembly 100 while ensuring the heat dissipation efficiency of the heat sink assembly 100.

[0069] Optionally, a flow path 122 and a fixed groove 121 are formed in the fifth heat sink 50 by stamping, and the fixed groove 121 is in communication with the flow path 122. The fifth heat sink 50 may be in communication with the first heat sink 10 via the corresponding flow path 122. Specifically, the refrigerant may flow from the first heat sink 10 into the flow path 122 of the fifth heat sink 50, and since the flow path 122 is in communication with the fixed groove 121, the refrigerant may flow from the flow path 122 in the first heat sink 10 into the fixed groove 121. Subsequently, the refrigerant flows from the fixed groove 121 into the fifth heat sink 50 and into the fixed groove 121 corresponding to the fifth heat sink 50. Next, the refrigerant flows from the fixed groove 121 of the fifth heat sink 50 into the flow path 122 corresponding to the fifth heat sink 50. Therefore, the smoothness and stability of the refrigerant flow between the first radiator 10 and the fifth radiator 50 can be guaranteed. Of course, alternatively, the refrigerant may flow in the reverse direction along the above path.

[0070] In addition, a flow path 122 and a fixed groove 121 are formed in the sixth heat sink 60 by stamping, and the fixed groove 121 is in communication with the flow path 122. The sixth heat sink 60 may also be in communication with the second heat sink 20 via the corresponding flow path 122. Specifically, the refrigerant may flow from the sixth heat sink 60 into the flow path 122 of the second heat sink 20. Since the flow path 122 is in communication with the fixed groove 121, the refrigerant may flow from the flow path 122 in the sixth heat sink 60 into the fixed groove 121. Subsequently, the refrigerant flows from the fixed groove 121 into the second heat sink 20 and into the corresponding fixed groove 121 of the second heat sink 20. Next, the refrigerant flows from the fixed groove 121 of the second heat sink 20 into the corresponding flow path 122 of the second heat sink 20. Therefore, the smoothness and stability of the refrigerant flow between the sixth radiator 60 and the second radiator 20 can be guaranteed. For example, the structures of the fifth radiator 50 and the sixth radiator 60 may be substantially identical to the structures of the first radiator 10 or the second radiator 20.

[0071] Referring to Figure 1, a battery pack 1000 according to one embodiment of the present disclosure may mainly include a plurality of battery cores 200 having electrodes 201 and the heat sink assembly 100 described above. The main heat dissipation region 32 of the heat sink assembly 100 corresponds to the electrodes 201. Specifically, the electrodes 201 of the plurality of battery cores 200 correspond to the main heat dissipation region 32, and the main heat dissipation region 32 dissipates heat from the electrodes 201 of the plurality of battery cores 200, thereby improving the heat dissipation performance and reliability of the battery pack 1000. In addition, because the heat dissipation performance of the battery pack 1000 is improved, the power limit for heat dissipation of the battery pack 1000 is also reduced, thereby improving the performance of the battery pack 1000.

[0072] Referring to Figure 1, the multiple battery cores 200 are arranged along the length of the first heat sink 10 and the second heat sink 20. This configuration not only facilitates the placement of the heat sink assembly 100 within the battery pack 1000 but also maximizes the use of space within the battery pack 1000, allowing the heat sink assembly 100 to dissipate heat more uniformly from the multiple battery cores 200.

[0073] Furthermore, the positive electrode 2011 and the negative electrode 2012 of the battery core 200 are positioned at both ends of the battery core 200 in the longitudinal direction. The greatest heat generation occurs at the positive electrode 2011 and the negative electrode 2012 of the battery core 200. Therefore, if the heat dissipation performance of the heat sink 100 relative to the battery cores 200 can be further guaranteed by arranging a plurality of fourth heat sinks 40 longitudinally between the first heat sink 10 and the second heat sink 20, and arranging the plurality of fourth heat sinks 40 to correspond to the positive electrodes 2011 and negative electrodes 2012 of the plurality of battery cores 200, that is, by ensuring that as many fourth heat sinks 40 as possible are arranged for the positive electrodes 2011 and negative electrodes 2012 of each battery core 200 in order to dissipate the heat from the positive electrodes 2011 and negative electrodes 2012 of the plurality of battery cores 200, the weight of the heat sink assembly 100 can be reduced, thereby optimizing the structural design of the heat sink assembly 100.

[0074] Referring to Figure 10, a vehicle 2000 according to one embodiment of the present disclosure includes the aforementioned battery pack 1000.

[0075] As the sole inlet and outlet for the refrigerant in the radiator assembly 100, the coupling portion 31 of the radiator assembly 100 may be connected to the air conditioning system pipeline 2002 within the vehicle 2000, and the coupling portion 31 and the air conditioning system pipeline 2002 may be connected in parallel within the air conditioning system 2001 of the vehicle 2000. The radiator assembly 100 may also be used as an evaporator or condenser within the battery pack 1000. The air conditioning controller of the vehicle 2000 controls whether refrigerant flows into the radiator assembly 100 and controls the evaporation (condensation) of the refrigerant within the radiator assembly 100 according to the requirements of the battery pack 1000 to achieve cooling (heating) of the battery pack 1000. The radiator assembly 100 may be used in parallel with other evaporators or condensers within the air conditioning system 2001, or the radiator assembly 100 may be used alone as an evaporator or condenser within the air conditioning system 2001.

[0076] When the radiator assembly 100 is used as an evaporator, the liquid refrigerant evaporates within the radiator assembly 100 to cool the battery pack 1000. When the radiator assembly 100 is used as a condenser, the gaseous refrigerant condenses within the radiator assembly 100 to heat the battery pack 1000. Because the refrigerant flows inside the radiator assembly 100, the radiator assembly 100 has higher heat dissipation efficiency and higher energy efficiency compared to a heat exchanger in which a single-phase liquid flows inside.

[0077] Furthermore, the radiator assembly 100 of the vehicle 2000 transfers heat through a phase change of the refrigerant (gas to liquid or liquid to gas). Since the heat transfer efficiency of the refrigerant is higher than that of conventional single-phase liquid working fluids, it further contributes to the cooling and heating of the battery pack 1000, thereby improving the energy efficiency ratio of the air conditioning system 2001 on the vehicle 2000 and reducing the energy consumption of the air conditioning system 2001.

[0078] In the description of this disclosure, orientations or positional relationships indicated by terms such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “top,” “bottom,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” “outside,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” are orientations or positional relationships indicated based on the accompanying drawings and should not be interpreted or implied that the apparatus or element should have a particular orientation or should be constructed and operated in a particular orientation. They are used solely to describe and simplify the description of this disclosure and should therefore not be construed as limitations on this disclosure.

[0079] In this specification, any reference term used, such as “one embodiment,” “several embodiments,” “exemplary embodiment,” “one example,” “a specific example,” or “several examples,” means that a particular characteristic, structure, material, or feature described by reference to an embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, a general description of the foregoing terms does not necessarily refer to the same embodiment or example.

[0080] While embodiments of this disclosure are shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of this disclosure, and the scope of this disclosure is defined by the appended claims and their equivalents. [Explanation of Symbols]

[0081] 1000 Battery Pack 2000 vehicles 2001 Air Conditioning System 2002 Air Conditioning Systems and Pipelines 100 Heat sink assembly 200 battery cores 201 Electrode 10. First heat sink 11. First upper plate 12. First lower plate 121 Fixed groove 1211 Second joint surface 122 Flow Channels 13. First main channel 14. Second main channel 15. First branch channel 151 First subchannel 152 Second Subchannel 16. Second branch channel 20. Second heat sink 21 Third main channel 22 Fourth main channel 23 Third branch channel 24. Fourth branch channel 241 First Channel 242 Second Channel 30 Third heat sink 31 Connecting part 311 Entrance Interface 312 Exit Interface 313 Entrance 314 Exit 32 Main heat dissipation region 33. Fifth main channel 34. The sixth main channel 35 Entrance hole 36 Exit hole 37. Second upper plate 38 Second lower plate 40. The fourth heat sink 41 First joint surface 42 Part 1 43 Part 2 44 Part 3 50 Fifth heat sink 60. The sixth heat sink 70 Separation part

Claims

1. The first heat sink (10) and A second heat sink (20), wherein the second heat sink (20) and the first heat sink (10) are arranged facing each other. A third heat sink (30) is connected between the first heat sink (10) and the second heat sink (20), and the third heat sink (30) communicates individually with the first heat sink (10) and the second heat sink (20), and a connecting portion (31) is provided on the third heat sink (30), and a main heat dissipation region (32) is formed surrounded by the third heat sink (30), the second heat sink (20), and the first heat sink (10), and the third heat sink (30), At least one fourth heat sink (40), wherein the at least one fourth heat sink (40) is located within the main heat dissipation region (32), the at least one fourth heat sink (40) is connected between the first heat sink (10) and the second heat sink (20), the fourth heat sink (40) communicates individually with the first heat sink (10) and the second heat sink (20), the at least one fourth heat sink (40) and the third heat sink (30) are arranged side by side between the first heat sink (10) and the second heat sink (20), the first heat sink (10) and the second heat sink (20) are both stamping plate type heat sinks, and the fourth heat sink (40) is a harmonica-shaped tube heat sink. Equipped with, Multiple fourth heat sinks (40) are provided, and the multiple fourth heat sinks (40) are spaced apart within the main heat dissipation region (32). A first main flow path (13) and a second main flow path (14) are arranged within the first heat sink (10), and the first main flow path (13) and the second main flow path (14) are spaced apart in the longitudinal direction of the first heat sink (10). A third main flow path (21) and a fourth main flow path (22) are arranged within the second heat sink (20), and the third main flow path (21) and the fourth main flow path (22) are spaced apart in the width direction of the second heat sink (20). A heat sink assembly (100) wherein the plurality of fourth heat sinks (40) comprises a first portion (42), a second portion (43), and a third portion (44), the first main flow path (13) communicates with the third main flow path (21) via the first portion (42) of the plurality of fourth heat sinks (40), the first main flow path (13) communicates with the fourth main flow path (22) via the second portion (43) of the plurality of fourth heat sinks (40), and the fourth main flow path (22) communicates with the second main flow path (14) via the third portion (44) of the plurality of fourth heat sinks (40).

2. The heat sink assembly (100) according to claim 1, wherein at least one open fixing groove (121) is provided on the side of the first heat sink (10) and the second heat sink (20) facing the fourth heat sink (40), and the end of the fourth heat sink (40) is fixed in the corresponding fixing groove (121).

3. The heat sink assembly (100) according to claim 2, wherein the first heat sink (10) and the second heat sink (20) each comprise a first upper plate (11) and a first lower plate (12), the first lower plate (12) being fixed below the first upper plate (11), a flow path (122) and a fixing groove (121) being formed in the first lower plate (12) by stamping, the fixing groove (121) communicating with the flow path (122), and the flow path (122) communicating with the fourth heat sink (40) via the fixing groove (121).

4. The heat sink assembly (100) according to claim 2 or 3, wherein the width of the fixing groove (121) is the same as the width of the corresponding fourth heat sink (40), and the end of the fourth heat sink (40) is welded into the corresponding fixing groove (121).

5. The heat sink assembly (100) according to claim 2 or 3, wherein the depth of the fixing groove (121) is equal to the height of the corresponding fourth heat sink (40).

6. A heat sink assembly (100) according to claim 2 or 3, wherein first joining surfaces (41) are arranged on both sides of the end of the fourth heat sink (40), and second joining surfaces (1211) are arranged on both sides of the fixing groove (121) corresponding to the fourth heat sink (40), and the first joining surfaces (41) coincide with the second joining surfaces (1211).

7. The heat sink assembly (100) according to claim 6, wherein each of the first joining surface (41) and the second joining surface (1211) is a curved surface, an arc surface, or an inclined plane.

8. At least two first branch channels (15) are arranged within the first heat sink (10), the at least two first branch channels (15) comprising a first sub-channel (151) and a second sub-channel (152), the first main channel (13) communicates with the first portion (42) of the plurality of fourth heat sinks (40) via the first sub-channel (151), the first main channel (13) communicates with the second portion (43) of the plurality of fourth heat sinks (40) via the second sub-channel (152), and / or A heat sink assembly (100) according to claim 1, wherein at least two second branch channels (16) are arranged within the first heat sink (10), the third portion (44) of the plurality of fourth heat sinks (40) communicates with the second main channel (14) via portions of the at least two second branch channels (16), and the second main channel (14) communicates with the third heat sink (30) via other portions of the at least two second branch channels (16).

9. At least two fourth branch channels (24) are arranged within the second heat sink (20), the at least two fourth branch channels (24) each comprising a first channel (241) and a second channel (242), the second portion (43) of the plurality of fourth heat sinks (40) communicates with the fourth main channel (22) via the first channel (241), the fourth main channel (22) communicates with the third portion (44) of the plurality of fourth heat sinks (40) via the second channel (242), and / or A heat sink assembly (100) according to claim 1, wherein at least two third branch channels (23) are arranged within the second heat sink (20), the first portion (42) of the plurality of fourth heat sinks (40) communicates with the third main channel (21) via portions of the at least two third branch channels (23), and the third main channel (21) communicates with the third heat sink (30) via other portions of the at least two third branch channels (23).

10. A heat sink assembly (100) according to claim 1, wherein a fifth main flow path (33) and a sixth main flow path (34) are arranged within the third heat sink (30), the fifth main flow path (33) and the sixth main flow path (34) are spaced apart in the longitudinal direction of the third heat sink (30), the fifth main flow path (33) is in communication with the second main flow path (14), and the sixth main flow path (34) is in communication with the third main flow path (21).

11. The heat sink assembly (100) according to claim 9, wherein separation sections (70) are arranged on the outside of both ends of the fourth main flow path (22), the separation section (70) on the outside of one end of the fourth main flow path (22) separates a portion of the third branch flow path (23) from the first channel (241), and the separation section (70) on the outside of the other end of the fourth main flow path (22) separates another portion of the third branch flow path (23) from the second channel (242).

12. The heat sink assembly (100) according to claim 10, wherein an inlet interface (311) and an outlet interface (312) are arranged in the connecting portion (31), the fifth main flow path (33) is in communication with the outlet interface (312), and the sixth main flow path (34) is in communication with the inlet interface (311).

13. The heat sink assembly (100) according to claim 1, wherein the third heat sink (30) comprises a second upper plate (37) and a second lower plate (38), the second lower plate (38) being fixed below the second upper plate (37), a flow path (122) being formed in the second lower plate (38) by stamping, the flow path (122) communicating with the first heat sink (10) and the second heat sink (20), respectively, and the connecting portion (31) being positioned on the second upper plate (37).

14. The heat sink assembly (100) according to claim 11, further comprising a fifth heat sink (50) and a sixth heat sink (60), wherein the fifth heat sink (50) is connected between the first heat sink (10) and the third heat sink (30), the fifth heat sink (50) is individually in communication with the first heat sink (10) and the third heat sink (30), the sixth heat sink (60) is connected between the second heat sink (20) and the third heat sink (30), the sixth heat sink (60) is individually in communication with the second heat sink (20) and the third heat sink (30), and both the fifth heat sink (50) and the sixth heat sink (60) are harmonica-shaped tube heat sinks.

15. The heat sink assembly (100) according to claim 1, wherein the third heat sink (30) is a stamping plate type heat sink or a harmonica-shaped tube heat sink.

16. A battery pack (1000) comprising the heat sink assembly (100) according to claim 1.

17. A battery pack (1000) according to claim 16, comprising a plurality of battery cores (200), wherein each battery core (200) has an electrode (201), and the electrode (201) corresponds to the main heat dissipation region (32) of the heat sink assembly (100).

18. The battery pack (1000) according to claim 17, wherein the plurality of battery cores (200) are arranged in the longitudinal direction of the first heat sink (10) and the second heat sink (20).

19. A vehicle (2000) comprising the battery pack (1000) according to claim 16.

20. The vehicle (2000) according to claim 19, comprising an air conditioning system (2001), wherein the connecting portion (31) of the radiator assembly (100) is connected to an air conditioning system pipeline (2002) within the vehicle (2000), and the connecting portion (31) and the air conditioning system pipeline (2002) are connected in parallel within the air conditioning system (2001) of the vehicle (2000).

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