Heat exchange apparatus, battery pack, and electric device

Abstract

Embodiments of the present application relate to the technical field of energy storage, and provide a heat exchange apparatus, a battery pack, and an electric device. The heat exchange apparatus comprises at least two heat exchange flow channels, manifold channels, and a bridging structure, wherein the at least two heat exchange flow channels are independent of each other; the manifold channels and at least one heat exchange flow channel are arranged at intervals; and the manifold channels and the heat exchange flow channel that are arranged at intervals are communicated with each other by means of the bridging structure. The embodiments of the present application can not only ensure the balance of the heat exchange capacity of the heat exchange apparatus, but also avoid the waste of resources.

Description

Heat exchangers, battery packs and electrical equipment

[0001] This application claims priority to Chinese Patent Application No. 202422076614.X, filed on August 26, 2024, entitled "Heat Exchanger, Battery Pack and Electrical Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of energy storage technology, and in particular to a heat exchange device, a battery pack, and an electrical appliance. Background Technology

[0003] A battery pack is a device that converts chemical energy into electrical energy and is widely used in new energy vehicles, energy storage power stations, and other fields. A battery pack typically consists of a housing and multiple batteries housed within the housing. The multiple batteries generate a significant amount of heat during operation, usually requiring a heat exchange device within the housing to dissipate this heat.

[0004] However, different areas of each battery generate different amounts of heat. When using heat exchange devices in related technologies to exchange heat with the battery, it is easy to cause uneven temperature distribution in the battery, which in turn affects the battery's performance and lifespan. Summary of the Invention

[0005] In view of the above problems, this application provides a heat exchange device, a battery pack, and an electrical device, which can improve the temperature uniformity of the battery, thereby improving the battery performance and service life.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A first aspect of this application provides a heat exchange device, comprising:

[0008] At least two heat exchange channels, and at least two heat exchange channels are independent of each other;

[0009] A confluence channel, wherein the confluence channel and at least one heat exchange channel are spaced apart;

[0010] A bridging structure that connects the spaced-apart confluence channel and the heat exchange channel.

[0011] In one possible implementation, at least two of the heat exchange channels are arranged in the same layer.

[0012] In one possible implementation, the confluence channel and the heat exchange channel are arranged in the same layer, and the confluence channel includes a first confluence channel and a second confluence channel, with the second confluence channel located between the heat exchange channel and the first confluence channel;

[0013] At least a portion of the heat exchange channels in at least two of the heat exchange channels are connected to the first confluence channel via the bridging structure;

[0014] The remaining number of heat exchange channels in at least two of the heat exchange channels are connected to the second confluence channel.

[0015] In one possible implementation, the heat exchange device further includes a heat spreader plate and a flow channel plate, wherein the heat spreader plate and the flow channel plate are stacked together.

[0016] Both the confluence channel and the heat exchange channel are disposed between the flow channel plate and the temperature equalization plate.

[0017] In one possible implementation, the heat exchange device further includes an auxiliary plate;

[0018] The auxiliary plate is stacked on the side of the heat spreader plate away from the flow channel plate, and forms the bridging structure with the heat spreader plate; wherein, the bridging structure is a bridging flow channel;

[0019] The temperature distribution plate is provided with a connecting hole; the first confluence channel is connected to the heat exchange channel through the bridging channel and the connecting hole.

[0020] In one possible implementation, the confluence channel includes a first confluence channel and a second confluence channel, wherein the first confluence channel and the second confluence channel are disposed in different layers;

[0021] The first confluence channel and the heat exchange channel are disposed in different layers, and the second confluence channel and the heat exchange channel are disposed in the same layer; at least one of the first confluence channel and the second confluence channel is connected through the bridging structure.

[0022] In one possible implementation, the orthographic projection of the first confluence channel onto the plane containing the second confluence channel at least partially covers the second confluence channel.

[0023] In one possible implementation, the heat exchange device includes a heat spreader plate and a flow channel plate, wherein the heat spreader plate and the flow channel plate are stacked together.

[0024] Both the second confluence channel and the heat exchange channel are disposed between the flow channel plate and the temperature equalization plate.

[0025] In one possible implementation, the bridging structure includes a bridging channel, and the heat exchange device further includes an auxiliary plate. The auxiliary plate is stacked on the side of the heat exchange plate away from the flow channel plate and forms the first confluence channel and the bridging structure with the heat exchange plate. The bridging structure is a bridging channel, and the bridging channel and the first confluence channel are interconnected.

[0026] The temperature distribution plate is provided with a connecting hole;

[0027] The first confluence channel is connected to the heat exchange channel through the bridging channel and the connecting hole.

[0028] In one possible implementation, the confluence channel and the heat exchange channel are arranged in separate layers.

[0029] In one possible implementation, the orthographic projection of the confluence channel onto the surface where the heat exchange channel is located partially overlaps with the heat exchange channel, and both the confluence channel and the heat exchange channel have a projection overlap area.

[0030] The bridging structure connects the overlapping areas of the projected flow channels of the confluence channel and the heat exchange channel.

[0031] In one possible implementation, the heat exchange device includes a manifold, the inner cavity of which forms the manifold flow channel;

[0032] The manifold is connected to the heat exchange channel through the bridging structure.

[0033] In one possible implementation, the bridging structure includes a bridging pipe; the heat exchange device includes a heat spreader plate and a flow channel plate, the heat exchange flow channel being disposed between the heat spreader plate and the flow channel plate;

[0034] The manifold is provided with a first connecting hole, and the temperature equalization plate is provided with a second connecting hole corresponding to the first connecting hole. The two ends of the bridge pipe are respectively connected to the first connecting hole and the second connecting hole.

[0035] In one possible implementation, the manifold includes a first manifold and a second manifold, and the heat exchange channel includes a first heat exchange channel and a second heat exchange channel;

[0036] The first manifold is connected to the first heat exchange channel via the bridge connector, and the second manifold is connected to the second heat exchange channel via the bridge connector.

[0037] In one possible implementation, at least two of the heat exchange channels constitute a heat exchange channel group;

[0038] The number of heat exchange channel groups is multiple, and the multiple heat exchange channel groups are arranged at intervals along the first direction;

[0039] In each heat exchange channel group, the intermittently arranged confluence channels and heat exchange channels are connected by the bridging structure.

[0040] In one possible implementation, the heat exchange channel group includes two first heat exchange channels and a second heat exchange channel located between the two first heat exchange channels, the two first heat exchange channels being connected and the first heat exchange channel and the second heat exchange channel being independent of each other.

[0041] The confluence channel includes a first confluence channel and a second confluence channel, wherein the first heat exchange channel is connected to the first confluence channel through the bridging structure, and / or the second heat exchange channel is connected to the second confluence channel through the bridging structure.

[0042] A second aspect of the present application provides a battery pack, including a battery and the heat exchange device described in the first aspect;

[0043] The heat exchange device exchanges heat with the battery.

[0044] In one possible implementation, the battery has at least two heat-generating zones with different heat outputs;

[0045] At least two heat exchange channels are provided in a one-to-one correspondence with the at least two heating zones, and each heat exchange channel is used to exchange heat with the corresponding heating zone.

[0046] In one possible implementation, at least two heating zones include a second heating zone and a first heating zone located on both sides of the second heating zone, wherein the heat output of the first heating zone is greater than the heat output of the second heating zone.

[0047] At least two heat exchange channels include a second heat exchange channel and a first heat exchange channel located on both sides of the second heat exchange channel;

[0048] The first heat exchange channel exchanges heat with the first heating zone, and the second heat exchange channel exchanges heat with the second heating zone.

[0049] In one possible implementation, the battery comprises a plurality of batteries arranged at intervals along a first direction; each battery exchanges heat with a corresponding heat exchange channel group.

[0050] A third aspect of this application provides an electrical device, including an electrical device and a battery pack as described in the second aspect, wherein the battery pack is electrically connected to the electrical device and is used to provide electrical energy to the electrical device.

[0051] In the heat exchange device, battery pack, and electrical equipment provided in this application embodiment, at least two heat exchange channels can be relatively independent. By adjusting the flow rate of different heat exchange channels, precise control of the temperature and heat of different heat exchange channels can be achieved, ensuring uniform temperature distribution within the heat exchange device. This allows for targeted heat exchange to different areas of the battery, improving temperature uniformity across different areas and thus enhancing battery performance and lifespan. Furthermore, it is not necessary to design the fluid flow rate according to the area of ​​the battery with the highest heat exchange demand, avoiding resource waste and reducing the heat exchange cost of the heat exchange device.

[0052] The spaced-out confluence channels and heat exchange channels are connected by a bridging structure, which allows for a more reasonable layout of the confluence channels and heat exchange channels. This makes the overall structure of the heat exchange device more compact, saves space, and is conducive to the miniaturization of the heat exchange device.

[0053] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the heat exchange device, battery pack, and electrical equipment provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 is a schematic diagram of a heat exchange device provided in an embodiment of this application;

[0056] Figure 2 is a partial structural schematic diagram of the heat exchange device provided in an embodiment of this application;

[0057] Figure 3 is a partial structural schematic diagram of the heat exchange device provided in an embodiment of this application;

[0058] Figure 4 is a partial structural schematic diagram of the heat exchange device provided in the embodiment of this application;

[0059] Figure 5 is a partial structural schematic diagram of the heat exchange device provided in the embodiment of this application;

[0060] Figure 6 is a schematic diagram of the heat exchange device provided in an embodiment of this application;

[0061] Figure 7 is an enlarged schematic diagram of region A in Figure 6;

[0062] Figure 8 is a partial structural schematic diagram of the heat exchange device provided in the embodiment of this application;

[0063] Figure 9 is an enlarged schematic diagram of region B in Figure 8;

[0064] Figure 10 is a partial structural schematic diagram of the heat exchange device provided in the embodiment of this application;

[0065] Figure 11 is an enlarged schematic diagram of region C in Figure 10;

[0066] Figure 12 is a schematic diagram of the battery pack provided in an embodiment of this application;

[0067] Figure 13 is a distribution diagram of the battery provided in an embodiment of this application;

[0068] Figure 14 is a second distribution diagram of the battery provided in the embodiment of this application.

[0069] Explanation of reference numerals in the attached drawings: 100: Heat exchange channel; 110: First heat exchange channel; 120: Second heat exchange channel; 130: Heat spreader plate; 131: Connecting hole; 140: Flow channel plate; 150: Auxiliary plate; 300: Manifold channel; 310: First manifold channel; 311: First sub-manifold channel; 312: Third sub-manifold channel; 320: Second manifold channel; 321: Second sub-manifold channel; 322: Fourth sub-manifold channel; 330: First return liquid manifold channel; 340: Second return liquid manifold channel; 400: Bridging structure; 500: First connector; 600: Second connector; 700: Manifold pipe; 710: First manifold pipe; 720: Second manifold pipe; 800: Heat exchange channel assembly; 900: Battery; 910: First heating zone; 920: Second heating zone. Detailed Implementation

[0070] In related technologies, different parts of a battery cell often generate different amounts of heat. For example, along the width of the cell, the heat generated by the electrodes at both ends is greater than that in the middle section. Heat exchange devices in these technologies typically include a single inlet and outlet connector. The fluid flowing in from the inlet connector must pass through both ends and the middle of the cell. If the design is based on the refrigerant flow rate required to cool the ends of the cell, the refrigerant flow rate at the inlet connector needs to be increased. However, the middle section of the cell generates less heat and does not require a large refrigerant flow rate, resulting in wasted resources. Conversely, if the design is based on the refrigerant flow rate required to cool both ends of the cell, it will cause overheating at the ends, reducing the stability and lifespan of the cell.

[0071] To address the aforementioned technical problems, embodiments of this application provide a heat exchange device, battery pack, and electrical equipment in which at least two heat exchange channels can operate relatively independently. By adjusting the flow rates of different heat exchange channels, precise control of the temperature and heat output of each channel can be achieved, ensuring uniform temperature distribution within the heat exchange device. This allows for targeted heat exchange to different areas of the battery, improving temperature uniformity and consequently enhancing battery performance and lifespan. Furthermore, it eliminates the need to design fluid flow rates based on the area with the highest heat exchange demand from the battery, avoiding resource waste and reducing the heat exchange cost of the device.

[0072] In addition, the intermittently arranged confluence channels and heat exchange channels are connected by a bridging structure, which allows for a reasonable layout of the confluence channels and heat exchange channels, making the overall structure of the heat exchange device more compact, saving space, and facilitating the miniaturization of the heat exchange device.

[0073] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0074] This application provides a heat exchange device that can be used to exchange heat with a battery pack. It should be understood that the heat exchange mentioned in this embodiment can be interpreted as the heat exchange device being able to cool or heat the battery pack. Exemplarily, the type of fluid flowing within the heat exchange device can be freely selected depending on the environment in which the battery pack is located. For example, when the heat exchange device is used to cool the battery pack, the fluid may include a refrigerant, CO2, ethylene glycol, or water.

[0075] Please refer to Figure 1. The heat exchange device includes at least two heat exchange channels 100, which are independent of each other; for example, the number of heat exchange channels 100 can be two, three, four, or even more. It should be noted that the at least two heat exchange channels 100 can be arranged in the same layer or in different layers. For example, arranging at least two heat exchange channels 100 in the same layer can simplify the fabrication process of the heat exchange channels 100.

[0076] Since at least two heat exchange channels 100 are relatively independent, precise control of the temperature and heat output of different heat exchange channels 100 can be achieved by adjusting the flow rate of each channel. This ensures uniform temperature distribution within the heat exchange device, allowing for targeted heat exchange to different areas of the battery, thus improving temperature uniformity and ultimately enhancing battery performance and lifespan. Furthermore, it eliminates the need to design the flow rate of the heat exchange channels 100 based on the area with the highest heat exchange demand, preventing resource waste and reducing the heat exchange cost of the device.

[0077] It should be understood that, in order to facilitate the control of fluid flow rate in at least two heat exchange channels 100, at least two heat exchange channels 100 can be connected to the thermal management system through heat exchange joints respectively. The thermal management system can be used to adjust the opening of each heat exchange joint, thereby achieving independent control of fluid flow rate in at least two heat exchange channels 100.

[0078] In this embodiment, the at least two heat exchange channels 100 may include two, three, four, or even more. For example, the at least two heat exchange channels 100 may include a first heat exchange channel 110 and a second heat exchange channel 120, with the first heat exchange channel 110 disposed on at least one side of the second heat exchange channel 120. For instance, there may be one first heat exchange channel 110 located on one side of the second heat exchange channel 120. Alternatively, there may be two first heat exchange channels 110, located on opposite sides of the second heat exchange channel 120.

[0079] One of the heat exchange channels 100 can cool the high heat generation area of ​​the battery, and the other heat exchange channel 100 can cool the low heat generation area of ​​the battery. The low heat generation part of the heat exchange channel 100 used to cool the low heat generation area can not be turned on or the cooling can be delayed during use, so as to reduce the battery temperature difference and save power consumption.

[0080] The heat exchange device provided in this application embodiment further includes a manifold 300 and a bridging structure 400, wherein the manifold 300 and at least one heat exchange channel 100 are spaced apart; wherein, the manifold 300 and at least one heat exchange channel 100 being spaced apart can be understood as the manifold 300 and at least one heat exchange channel 100 being spaced apart in the horizontal direction, or it can be understood as the manifold 300 and at least one heat exchange channel 100 being spaced apart in the vertical direction.

[0081] Since there are two independent heat exchange channels 100 in the heat exchange device, these two heat exchange channels 100 require independent inlet and outlet channels when the heat exchange medium enters and exits. That is, the confluence channels need to be set independently. Therefore, the confluence channels 300 and the heat exchange channels 100, which are set at intervals, are connected by a bridging structure 400. On the one hand, this allows for a reasonable layout of the confluence channels 300 and the heat exchange channels 100, making the overall structure of the heat exchange device more compact, saving space, and facilitating the miniaturization of the heat exchange device. On the other hand, it also ensures the normal flow of fluid between the confluence channels 300 and the heat exchange channels 100, which are set at intervals.

[0082] In one possible implementation, the manifold 300 and the heat exchange channel 100 are arranged in the same layer, that is, the manifold 300 and the heat exchange channel 100 are in the same plane.

[0083] Please refer to Figure 1, in which the flow channel 300 includes a first flow channel 310 and a second flow channel 320. The second flow channel 320 is located between the heat exchange flow channel 100 and the first flow channel 310, or in other words, the first flow channel 310 is located on the side of the second flow channel 320 away from the heat exchange flow channel 100.

[0084] At least a portion of the two heat exchange channels 100 are connected to the first confluence channel 310 via a bridging structure 400; the remaining portion of the two heat exchange channels 100 are connected to the second confluence channel 320. It should be noted that in this example, "partial" and "remaining" can be understood as follows: when there are two heat exchange channels 100, "partial" can refer to one of them, and "remaining" can refer to the other. When there are three heat exchange channels 100, "partial" can refer to one of them, and "remaining" can refer to the other two; or, "partial" can refer to two of them, and "remaining" can refer to the third.

[0085] To facilitate the layout of the connection between the first confluence channel 310 and the second confluence channel 320 and at least two heat exchange channels 100, the following embodiments are described using at least two heat exchange channels 100, including the first heat exchange channel 110 and the second heat exchange channel 120.

[0086] Since the first heat exchange channel 110 and the second heat exchange channel 120 are independent of each other, the first merging channel 310 and the second heat exchange channel 120 are also independent of each other. Therefore, the first merging channel 310 can be connected to the first heat exchange channel 110 through the bridging structure 400, and the second merging channel 320 is directly connected to the second heat exchange channel 120. This optimizes the flow path of the fluid in the heat exchange device, helps to distribute the fluid evenly, and thus improves the heat exchange efficiency of the heat exchange device. Furthermore, in this embodiment, the first manifold 310 and the first heat exchange channel 110 are connected by a bridging structure 400. Without changing the setting position of the second manifold 320, the first manifold 310 can be connected to the first heat exchange channel 110, ensuring that fluid can flow into the first heat exchange channel 110, thereby enabling the first heat exchange channel 110 to have heat exchange capacity. In addition, the connection between the first manifold 310 and the first heat exchange channel 110 through the bridging structure 400 also makes the structure of the heat exchange device more compact, which helps to save space and is suitable for application scenarios that require efficient heat exchange but have limited space.

[0087] In other possible implementations, the second manifold 320 can be connected to the second heat exchanger 120 via a bridging structure 400, and the first manifold 310 can be directly connected to the first heat exchanger 110. Alternatively, the first manifold 310 can be connected to the first heat exchanger 110 via the bridging structure 400, and the second manifold 320 can be connected to the second heat exchanger 120 via the bridging structure 400.

[0088] To realize the dual-control design concept of the heat exchange device, the heat exchange device provided in this embodiment also includes a first connector 500 and a second connector 600. The first connector 500 is connected to the first heat exchange channel 110 through a first manifold 310, and the second connector 600 is connected to the second heat exchange channel 120 through a second manifold 320. Both the first connector 500 and the second connector 600 can be connected to a thermal management system. By independently controlling the first connector 500 and the second connector 600 through the thermal management system, the flow rates of the first heat exchange channel 110 and the second heat exchange channel 120 can be precisely adjusted to meet the needs under different operating conditions.

[0089] The first confluence channel 310 includes a first sub-confluence channel 311, and the second confluence channel 320 includes a second sub-confluence channel 321; the first sub-confluence channel 311 and the second sub-confluence channel 321 are located on the first side of the heat exchange channel 100; the first sub-confluence channel 311 is connected to the first heat exchange channel 110 through a bridging structure 400.

[0090] The first manifold 310 includes a third sub-manifold 312, and the second manifold 320 includes a fourth sub-manifold 322. The third sub-manifold 312 and the fourth sub-manifold 322 are located on the second side of the heat exchange channel 100. The third sub-manifold 312 is connected to the first heat exchange channel 110 through a bridging structure 400. It should be understood that in this embodiment, the first side and the second side can be arranged along a first direction, with one of the first side and the second side being the liquid inlet and the other being the liquid outlet.

[0091] This embodiment, through the design of multiple sub-flow channels and bridging channels, helps to transfer heat more effectively and improve the performance of the battery pack. Furthermore, the first heat exchange channel 110 and the second heat exchange channel 120 have relatively independent connectors. That is, the flow rate of the fluid in the first heat exchange channel 110 can be controlled by the first connector 500 in conjunction with the battery pack's thermal management system, and the flow rate of the fluid in the second heat exchange channel 120 can be controlled by the second connector 600 in conjunction with the battery pack's thermal management system, forming a dual-inlet, dual-outlet intelligent heat exchange device. This allows for more flexible adjustment methods, resulting in a faster response speed for the heat exchange device and better, more precise control of the battery's temperature difference, ensuring that each cell in the battery receives equal treatment while minimizing the space requirement on the plane. In addition, the dual-inlet, dual-outlet intelligent heat exchange device not only eliminates the need for secondary design for thermal management of small components but also reduces frictional resistance, exhibiting excellent energy-saving properties.

[0092] It should be noted that, in order to facilitate the formation of a complete circulation loop in the manifold 300, the number of first connectors 500 and second connectors 600 can both be two. Referring to Figure 1, the end of the first sub-manifold 311 facing away from the first heat exchange channel 110 is connected to one of the first connectors 500, and the end of the third sub-manifold 312 facing away from the first heat exchange channel 110 is connected to the other first connector 500. The first sub-manifold 311 can serve as either the inlet manifold or the outlet manifold of the first heat exchange channel 110; the third sub-manifold 312 can serve as the other of the inlet and outlet manifolds of the first heat exchange channel 110. For example, the first sub-manifold 311 can serve as the inlet manifold, and the third sub-manifold 312 can serve as the outlet manifold of the first heat exchange channel 110.

[0093] The end of the second sub-manifold 321 opposite to the second heat exchange channel 120 is connected to one of the second connectors 600, so that the second sub-manifold 321 serves as either the inlet manifold or the outlet manifold of the second heat exchange channel 120; the end of the fourth sub-manifold 322 opposite to the second heat exchange channel 120 is connected to another second connector 600, so that the fourth sub-manifold 322 serves as either the inlet manifold or the outlet manifold of the second heat exchange channel 120. For example, the second sub-manifold 321 is the outlet manifold, and the fourth sub-manifold 322 is the inlet manifold.

[0094] In this embodiment, the liquid inlet manifold of the first heat exchange channel 110 and the liquid outlet manifold of the second heat exchange channel 120 are located on the same side of the heat exchange channel 100, and the liquid outlet manifold of the first heat exchange channel 110 and the liquid inlet manifold of the second heat exchange channel 120 are located on the same side of the heat exchange channel 100. This arrangement can reduce cross-contamination between fluids and help improve the cleanliness of the battery pack and the purity of the fluids.

[0095] It should be understood that the four connectors can be located at both ends of the heat exchange channel 100 in the first direction, or in other arrangements. For example, of the two first connectors 500, one is located at the end of the heat exchange channel 100 in the first direction, serving as a liquid inlet; the other is located in the middle of the heat exchange channel 100 in the first direction, serving as a liquid outlet. Simultaneously, of the two second connectors 600, one is located at the end of the heat exchange channel 100 in the first direction, serving as a liquid inlet; the other is located in the middle of the heat exchange channel 100 in the first direction, serving as a liquid outlet.

[0096] At this time, the heat exchange device may also include a first return liquid manifold 330 and a second return liquid manifold 340; the second sub-manifold 321 is connected to the first connector 500, which serves as a liquid outlet connector, through the third sub-manifold 312; the second sub-manifold 321 is connected to the second connector 600, which serves as a liquid outlet connector, through the second return liquid manifold 340.

[0097] The first return liquid manifold 330 and the second return liquid manifold 340 are disposed in different layers from the heat exchange channel 100. Along the thickness direction of the support member, the first return liquid manifold 330 and the second return liquid manifold 340 are disposed on the same side of the heat exchange channel 100, or separately on opposite sides of the heat exchange channel 100. This arrangement avoids the first return liquid manifold 330 and the second return liquid manifold 340 being located in the same layer as the heat exchange channel 100. This reduces the fabrication difficulty of the first return liquid manifold 330 and the second return liquid manifold 340 with the heat exchange channel 100, and also prevents crosstalk between the fluids in the first return liquid manifold 330 and the second return liquid manifold 340 and the fluids in the heat exchange channel 100. Therefore, while ensuring the normal operation of the heat exchanger, it also improves the heat exchange efficiency of the heat exchanger.

[0098] It should be understood that the first return fluid manifold 330 and the second return fluid manifold 340 can be separate pipes or other structures. For example, the battery pack support also includes a central beam (not shown in the figure) extending along a second direction and located at the center of the support.

[0099] The first return liquid manifold 330 and the second return liquid manifold 340 are both formed on the intermediate beam. For example, two grooves are provided on the intermediate beam, and the two grooves extend along the second direction; the two grooves respectively constitute the first return liquid manifold 330 and the second return liquid manifold 340. This arrangement simplifies the first return liquid manifold 330 and the second return liquid manifold 340, thereby simplifying the manufacturing difficulty of the heat exchanger and reducing the production cost of the heat exchanger.

[0100] Furthermore, in other embodiments, the groove accommodates the first return liquid manifold 330 and the second return liquid manifold 340. That is, the first return liquid manifold 330 and the second return liquid manifold 340 can also be constructed from additional components, and the groove merely provides space to accommodate these additional components. For example, a heat exchanger may be equipped with a return liquid component, which is positioned on the side of the heat spreader away from the flow channel plate, thereby forming the first return liquid manifold 330 and the second return liquid manifold 340 between the return liquid component and the heat spreader plate. In this case, the groove accommodates at least part of the return liquid component. In this way, on the one hand, the height of the battery pack can be reduced, and on the other hand, more internal space can be freed up for the arrangement of other components, improving space utilization.

[0101] Furthermore, it is usually necessary to control the outlet superheat of the heat exchange device to ensure the normal operation of the compressor. The flow channels here often overheat. Therefore, this embodiment needs to consider placing the first return liquid manifold 330 and the second return liquid manifold 340 in a location where the battery 900 is not located. For example, the first return liquid manifold 330 and the second return liquid manifold 340 can be placed on the intermediate beam. This arrangement ensures that even if the temperature of the first return liquid manifold 330 and the second return liquid manifold 340 is too high, it will not affect the heat exchange of the battery, preventing overheating and improving the temperature uniformity of the battery. On the other hand, given the large size of the intermediate beam, placing the first return liquid manifold 330 and the second return liquid manifold 340 on the intermediate beam in this embodiment can improve the stability of the battery pack.

[0102] It should be noted that when the first return liquid manifold 330 and the second return liquid manifold 340 can be separate pipes, the two grooves can also accommodate the pipes respectively, so as to provide installation space for the pipes, reduce the height of the battery pack, and thus improve the energy density of the battery pack.

[0103] In one possible implementation, referring to Figure 2, the heat exchange device further includes a heat spreader plate 130 and a flow channel plate 140, which are stacked together. The confluence flow channel 300 and the heat exchange flow channel 100 are both disposed between the flow channel plate 140 and the heat spreader plate 130. During manufacturing, the confluence flow channel 300 and the heat exchange flow channel 100 can be formed on the flow channel plate 140 using a stamping process; then, the heat spreader plate 130 is placed on the flow channel plate 140 and fixed thereto by welding or bolts. This embodiment uses a stamping process to form the confluence flow channel 300 and the heat exchange flow channel 100 on the flow channel plate 140, which simplifies the manufacturing process, improves production efficiency, and reduces manufacturing costs.

[0104] Please continue to refer to Figures 2 and 3. The heat exchange device also includes an auxiliary plate 150. The auxiliary plate 150 is stacked on the side of the heat exchange plate 130 away from the flow channel plate 140, and forms a bridging structure 400 with the heat exchange plate 130. The bridging structure 400 is a bridging flow channel.

[0105] The heat spreader 130 is provided with a connecting hole 131, which connects the first confluence channel 310 and the heat exchange channel 100. For example, the connecting hole 131 connects the first confluence channel 310 and the first heat exchange channel 110. Exemplarily, in this embodiment, a first connecting hole (not shown in the figure) and a second connecting hole (not shown in the figure) are provided on the heat spreader 130. One end of the bridging channel is connected to the first confluence channel 310 through the first connecting hole, and the other end of the bridging channel is connected to the first heat exchange channel 110 through the second connecting hole, so as to realize the connection between the first confluence channel 310 and the first heat exchange channel 110.

[0106] In this embodiment, by placing the auxiliary plate 150 on the side of the heat exchange plate 130 away from the flow channel plate 140, and forming a bridging channel between the auxiliary plate 150 and the heat exchange plate 130, the flow path of the fluid can be optimized, the flow resistance can be reduced, and the heat exchange efficiency can be improved. On the other hand, the auxiliary plate 150 can also increase the stability and strength of the heat exchange device.

[0107] In this example, the height of the bridging channel can be equal to the height of the manifold channel 300. For example, the height of the bridging channel can be 2.8 mm higher than that of the manifold channel 300. It should be noted that both the first manifold channel 310 and the second manifold channel 320 are arranged in the same layer as the heat exchange channel 100, but other arrangements are also possible.

[0108] For example, referring to Figure 4, the confluence channel 300 includes a first confluence channel 310 and a second confluence channel 320, which are arranged in different layers.

[0109] The first merging channel 310 and the heat exchange channel 100 are arranged in different layers, while the second merging channel 320 and the heat exchange channel 100 are arranged in the same layer. At least one of the first merging channel 310 and the second merging channel 320 is connected by a bridging structure 400.

[0110] In this embodiment, the first busbar channel 310 and the heat exchange channel 100 are arranged in different layers, while the second busbar channel 320 and the heat exchange channel 100 are arranged in the same layer. This arrangement reduces the horizontal area occupied by the busbar channel 300 in the heat exchange device, which is more conducive to increasing the area occupied by the heat exchange channel 100. This facilitates the division of the heat exchange channel 100 into multiple sub-heat exchange channels, ensuring that the heat exchange device can perform zoned control of the battery and improving the temperature uniformity of the battery.

[0111] The first confluence channel 310 and the second confluence channel 320 can be aligned or staggered in the vertical direction. In this embodiment, the vertical direction can be the Z direction in Figure 4. For example, the orthographic projection of the first confluence channel 310 onto the plane containing the second confluence channel 320 at least covers a portion of the second confluence channel 320. For instance, the orthographic projection of the first confluence channel 310 onto the plane containing the second confluence channel 320 covers a portion of the second confluence channel 320. Or, for another example, the orthographic projection of the first confluence channel 310 onto the plane containing the second confluence channel 320 covers the entire second confluence channel 320. This arrangement allows for a more compact heat exchanger structure, saves space, and facilitates the miniaturization of the heat exchanger; it also optimizes the layout of the confluence channels 300 and 100 of the heat exchanger, improving space utilization.

[0112] As one possible implementation of the heat exchange device, please refer to Figure 5. The heat exchange device includes a heat spreader plate 130 and a flow channel plate 140, which are stacked together. The second confluence flow channel 320 and the heat exchange flow channel 100 are both disposed between the flow channel plate 140 and the heat spreader plate 130.

[0113] The bridging structure 400 includes a bridging flow channel, and the heat exchange device also includes an auxiliary plate 150. The auxiliary plate 150 is stacked on the side of the heat exchange plate 130 opposite to the flow channel plate 140, and together with the heat exchange plate 130, forms a first confluence flow channel 310 and the bridging structure 400. The bridging structure 400 is a bridging flow channel, and the bridging flow channel and the first confluence flow channel 310 are interconnected. Taking the orientation shown in Figure 5 as an example, the first confluence flow channel 310 is located in the area to the left of the dashed line, and the bridging flow channel is located in the area to the right of the dashed line.

[0114] The temperature distribution plate 130 is provided with a connecting hole 131, and the first confluence channel 310 is connected to the heat exchange channel 100 through the connecting hole 131 and the bridging channel. In this embodiment, the first confluence channel 310 and the bridging channel are arranged in the same layer and are interconnected. Thus, they can be directly connected to the heat exchange channel 100 through a single connecting hole 131, shortening the connection path between the first confluence channel 310 and the heat exchange channel 100, reducing the resistance and pressure drop of fluid flow, thereby reducing the energy consumption of the heat exchange device and improving the heat exchange effect of the heat exchange device.

[0115] Please continue referring to Figure 2. In this embodiment, the auxiliary plate 150 can be positioned between the heat exchange device and the battery pack support. For example, the auxiliary plate 150 can be supported by the side beams of the support, which can improve the stability of the heat exchange device.

[0116] An obstacle avoidance cavity (not shown in the figure) is provided on the side beam. The obstacle avoidance cavity is used to accommodate the auxiliary plate 150, thereby protecting the auxiliary plate 150 from external physical damage and environmental influences, which helps to extend the service life of the auxiliary plate 150 and improve the reliability of the battery pack.

[0117] In this embodiment, there is a gap between the auxiliary plate 150 and the inner wall of the clearance cavity. For example, if the distance between the surface of the auxiliary plate 150 and the heat spreader 130 along the thickness direction of the support member is 4 mm, then the distance between the bottom wall of the clearance cavity and the heat spreader 130 is greater than 4 mm. This arrangement allows the auxiliary plate 150 a certain degree of freedom during thermal expansion and contraction, thereby reducing the impact of thermal stress on the auxiliary plate 150 and the clearance cavity, which helps to extend the service life of the battery pack and improve its reliability. On the other hand, it can also play a role in shock absorption and vibration reduction, reducing the mechanical stress on the auxiliary plate 150 during operation, which helps to improve the stability and durability of the battery pack.

[0118] In other embodiments, the auxiliary plate 150 may also be disposed between the battery 200 and the side beam, i.e., there is a gap between the battery 200 and the side beam, which can be used to accommodate the auxiliary plate 150.

[0119] In one possible implementation, referring to Figures 6 to 11, the manifold 300 and the heat exchange channel 100 are arranged in separate layers. In other words, all the manifold 300 and the heat exchange channel 100 are arranged in separate layers. This can greatly increase the occupied area of ​​the heat exchange channel 100 without cooling the battery. This also facilitates the division of at least two heat exchange channels 100 to form an independent dual-control structure, thereby ensuring that the heat exchange device can perform zoned control of the battery and improve the temperature uniformity of the battery.

[0120] In one possible implementation, the orthographic projection of the confluence channel 300 onto the plane containing the heat exchange channel 100 partially coincides with that of the heat exchange channel 100, and both the confluence channel 300 and the heat exchange channel 100 have a projection overlap area; the bridging structure 400 connects the projection overlap areas of the confluence channel 300 and the heat exchange channel 100. By setting the two projection overlap areas relative to each other, the placement of the bridging structure 400 can be optimized, facilitating direct connection between the bridging structure 400 and the heat exchange channel 100, thus optimizing the heat transfer path, reducing heat loss, and improving the heat exchange efficiency of the heat exchange device.

[0121] To facilitate the separate arrangement of the manifold 300 and the heat exchange channel 100, the heat exchange device includes a manifold 700, the inner cavity of which forms the manifold 300. The manifold 700 is connected to the heat exchange channel 100 via a bridging structure 400. The manifold 700 can be made of aluminum tubing, which reduces its weight and consequently the weight of the heat exchange device. The manifold 700 has an outer diameter of 20mm and a wall thickness of 1-1.5mm.

[0122] Since the area with the greatest pressure loss in the heat exchange device is located in the flow channel with the greatest flow rate, that is, the pressure drop is greatest in the manifold 300, this embodiment can freely set the pipe diameter of the manifold 700 through the design of the external manifold 700. For example, the pipe diameter of the manifold 700 can be increased, thereby minimizing the pressure drop of the manifold 700 and improving the heat exchange efficiency of the heat exchange device.

[0123] In this embodiment, the manifold 700 is positioned to cooperate with the side beams or longitudinal beams of the support member, and the side beams or longitudinal beams of the support member are in close contact with the heat exchange plate 130. Therefore, a clearance area needs to be provided on the side beams or longitudinal beams to accommodate the manifold 700. The depth of the clearance area is at least greater than or equal to the diameter of the manifold 700, and the width of the clearance area is greater than or equal to the diameter of the manifold 700, so that there is a gap between the inner wall of the clearance area and the outer wall of the manifold 700.

[0124] In this embodiment, the bridging structure 400 includes a bridging pipe; the heat exchange device includes a heat spreader plate 130 and a flow channel plate 140, and the heat exchange flow channel 100 is disposed between the heat spreader plate 130 and the flow channel plate 140.

[0125] The manifold 700 is provided with a first connecting hole (not shown in the figure), and the heat exchange plate 130 is provided with a second connecting hole (not shown in the figure) corresponding to the first connecting hole. The two ends of the bridging pipe are connected to the first connecting hole and the second connecting hole respectively, so as to realize the connection between the manifold 300 and the heat exchange channel 100. In this embodiment, the bridging structure 400 is a bridging pipe, and the length or diameter of the bridging pipe can be freely set to facilitate the assembly of the heat exchange device.

[0126] Please refer to Figures 8 to 11. The manifold 700 includes a first manifold 710 and a second manifold 720. The first manifold 710 is connected to the first heat exchange channel 110 through a bridge pipe, and the second manifold 720 is connected to the second heat exchange channel 120 through a bridge pipe.

[0127] The first manifold 710 includes a first sub-manifold 711 and a second sub-manifold 712. The first sub-manifold 711 and the second sub-manifold 712 are located on both sides of the first heat exchange channel 110 in the second direction and are arranged in different layers from the first heat exchange channel 110.

[0128] The second manifold 720 includes a third sub-manifold 721 and a fourth sub-manifold 722. In a direction perpendicular to the plane of the heat exchange channel 100, the third sub-manifold 721 and the fourth sub-manifold 722 are located on both sides of the second heat exchange channel 120, and the second manifold 720 is also located in the middle of the second heat exchange channel 120 in the first direction.

[0129] This arrangement facilitates the layout of the first manifold 710 and the second manifold 720, improving the structural compactness of the heat exchange device.

[0130] Please continue to refer to Figure 1. In the heat exchange device provided in the embodiment of this application, at least two heat exchange channels 100 constitute a heat exchange channel group 800; there are multiple heat exchange channel groups 800, and multiple heat exchange channel groups 800 are arranged at intervals along the first direction; each heat exchange channel group 800 corresponds to a battery 200.

[0131] In each heat exchange channel group 800, the intermittently arranged confluence channels 300 and heat exchange channels 100 are connected by a bridging structure 400. This arrangement can improve the heat exchange capacity of the heat exchange device.

[0132] The heat exchange channel group 800 includes two first heat exchange channels 110 and a second heat exchange channel 120 located between the two first heat exchange channels 110. The two first heat exchange channels 110 are connected, and the first heat exchange channel 110 and the second heat exchange channel 120 are independent of each other.

[0133] The flow channel 300 includes a first flow channel 310 and a second flow channel 320. The first heat exchange channel 110 is connected to the first flow channel 310 via a bridging structure 400, and / or the second heat exchange channel 120 is connected to the second flow channel 320 via a bridging structure 400. This allows for targeted adjustment of the flow rates of the first heat exchange channel 110 and the second heat exchange channel 120 based on the heat generation conditions of different areas of the battery 200, thereby improving the temperature uniformity of the battery 200.

[0134] Please refer to Figure 12. This application embodiment also provides a battery pack, including a battery 900 and a heat exchange device described in any of the above embodiments. The heat exchange device exchanges heat with the battery 900 to heat the battery 900.

[0135] Given that the battery pack in this embodiment includes the heat exchange device described in any of the above embodiments, it possesses the structure and beneficial effects of the heat exchange device, and will not be described in detail here.

[0136] In this embodiment, the battery 900 includes at least two heating zones with different heat outputs, and at least two heat exchange channels 100 are configured to correspond one-to-one with the at least two heating zones. Each heat exchange channel 100 is used to exchange heat with its corresponding heating zone. That is, the first heating zone 910 corresponds to the first heat exchange channel 110 so that the first heat exchange channel 110 can exchange heat with the first heating zone 910; the second heating zone 920 corresponds to the second heat exchange channel 120 so that the second heat exchange channel 120 can exchange heat with the second heating zone 920. This configuration allows the parameters of the corresponding heat exchange channels 100 to be adjusted independently according to the heat output of different heating zones, and also avoids resource waste and reduces the cost of the heat exchange device.

[0137] In one possible implementation, referring to Figures 13 and 14, along a first direction, the battery 900 includes a first heating region 910 and a second heating region 920. The first heating region 910 is located on both sides of the second heating region 920, that is, the two second heating regions 920 are respectively located on one side of the first heating region 910; the heat generated by the first heating region 910 is greater than the heat generated by the second heating region 920.

[0138] It should be noted that in this embodiment, the first heating area 910 can be the area opposite to the terminal of the battery 900. This area generates a large amount of heat and is usually located at both ends of the battery 900 in the first direction. The second heating area 920 can be the other areas of the battery 900 excluding the terminal. This area generates a small amount of heat and is usually the middle area of ​​the battery 900.

[0139] At least two heat exchange channels 100 include a second heat exchange channel 120 and first heat exchange channels 110 located on both sides of the second heat exchange channel 120. In this embodiment, the first heat exchange channel 110 exchanges heat with the first heating zone 910, and the second heat exchange channel 120 exchanges heat with the second heating zone 920. This allows for independent control of the first and second heat exchange channels 110 and to employ different flow rate strategies to adjust the cooling capacity distribution of each heating zone, resulting in different heat exchange channels 100 having different heat exchange capabilities. This reduces the temperature difference between the first heating zone 910 and the second heating zone 920, thereby reducing the temperature difference of the battery pack.

[0140] In addition, the flow channel 300 includes a first flow channel 310 and a second flow channel 320, the first heat exchange channel 110 and the first flow channel 310 are connected by a bridging structure 400, and / or the second heat exchange channel 120 and the second flow channel 320 are connected by a bridging structure 400.

[0141] In this embodiment, the battery pack further includes a support member, which comprises multiple accommodating cavities, each accommodating a battery 900. Referring to Figures 12 and 13, there can be eight accommodating cavities, arranged in two rows of four columns, with beam structures between any adjacent accommodating cavities. Referring to Figure 12, there can be four accommodating cavities, arranged sequentially along a first direction.

[0142] In one possible implementation, the battery 900 comprises multiple batteries arranged at intervals along a first direction. Each battery 900 exchanges heat with a corresponding heat exchange channel assembly. Thus, each battery 900 dissipates heat through its corresponding heat exchange channel assembly, ensuring that heat is rapidly removed, preventing overheating, and improving the overall performance and lifespan of the battery pack.

[0143] This application also provides an electrical device, including an electrical device and a battery pack as described in any of the above embodiments. The battery pack is electrically connected to the electrical device and is used to provide electrical energy to the electrical device.

[0144] The electrical equipment in this application embodiment can be a vehicle, such as a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle, and a new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. Accordingly, the electrical device can be the vehicle's drive mechanism or the vehicle's control system.

[0145] In addition, electrical equipment can also serve as other energy storage devices, such as mobile phones, portable devices, laptops, electric toys, power tools, ships, and spacecraft. Among these, spacecraft can include airplanes, rockets, space shuttles, or spacecraft.

[0146] Since the electrical device in this embodiment includes the battery pack described in any of the above embodiments, the electrical device includes the battery pack structure and beneficial effects, which will not be described in detail here.

[0147] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0148] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A heat exchange device, wherein, include: At least two heat exchange channels (100), and at least two of the heat exchange channels (100) are opposed to each other; A manifold (300) is provided at intervals with at least one of the heat exchange channels (100); A bridging structure (400) connects the confluence channel (300) and the heat exchange channel (100) that are spaced apart.

2. The heat exchange device according to claim 1, wherein, At least two of the heat exchange channels (100) are arranged in the same layer.

3. The heat exchange device according to claim 1 or 2, wherein, The confluence channel (300) and the heat exchange channel (100) are arranged in the same layer; The confluence channel (300) includes a first confluence channel (310) and a second confluence channel (320), the second confluence channel (320) being located between the heat exchange channel (100) and the first confluence channel (310); At least a portion of the heat exchange channels (100) are connected to the first confluence channel (310) via the bridging structure (400); The remaining number of heat exchange channels (100) in at least two of the heat exchange channels (100) are connected to the second confluence channel (320).

4. The heat exchange device according to any one of claims 1-3, wherein, The heat exchange device further includes a heat spreader plate (130) and a flow channel plate (140), which are stacked together. Both the confluence channel (300) and the heat exchange channel (100) are disposed between the channel plate (140) and the heat exchange plate (130).

5. The heat exchange device according to claim 4, wherein, The heat exchange device further includes an auxiliary plate (150), which is stacked on the side of the heat exchange plate (130) away from the flow channel plate (140) and forms the bridging structure (400) with the heat exchange plate (130); wherein the bridging structure (400) is a bridging flow channel. The temperature distribution plate (130) is provided with a connecting hole (131); The first confluence channel (310) is connected to the heat exchange channel (100) through the bridging channel and the connecting hole (131).

6. The heat exchange device according to claim 1, wherein, The confluence channel (300) includes a first confluence channel (310) and a second confluence channel (320), wherein the first confluence channel (310) and the second confluence channel (320) are disposed in different layers; The first confluence channel (310) and the heat exchange channel (100) are arranged in different layers, and the second confluence channel (320) and the heat exchange channel (100) are arranged in the same layer; At least one of the first confluence channel (310) and the second confluence channel (320) is connected by the bridging structure (400).

7. The heat exchange device according to claim 6, wherein, The orthographic projection of the first confluence channel (310) onto the plane where the second confluence channel (320) is located at least partially covers the second confluence channel (320).

8. The heat exchange device according to claim 6 or 7, wherein, The heat exchange device includes a heat spreader plate (130) and a flow channel plate (140), which are stacked together. The second confluence channel (320) and the heat exchange channel (100) are both disposed between the channel plate (140) and the heat exchange plate (130).

9. The heat exchange device according to claim 8, wherein, The heat exchange device further includes an auxiliary plate (150), which is stacked on the side of the heat exchange plate (130) away from the flow channel plate (140) and forms the first confluence flow channel (310) and the bridging structure (400) with the heat exchange plate (130). The bridging structure (400) is a bridging flow channel and the bridging flow channel is interconnected with the first confluence flow channel. The temperature distribution plate (130) is provided with a connecting hole (131); The first confluence channel (310) is connected to the heat exchange channel (100) through the bridging channel and the connecting hole (131).

10. The heat exchange device according to claim 1, wherein, The confluence channel (300) and the heat exchange channel (100) are arranged in different layers.

11. The heat exchange device according to claim 10, wherein, The orthographic projection of the confluence channel (300) onto the surface where the heat exchange channel (100) is located partially overlaps with that of the heat exchange channel (100), and both the confluence channel (300) and the heat exchange channel (100) have a projection overlap area. The bridging structure (400) connects the projected overlap areas of the confluence channel (300) and the heat exchange channel (100).

12. The heat exchange device according to claim 10 or 11, wherein, The heat exchange device includes a manifold (700), the inner cavity of which forms the manifold flow channel; The manifold (700) is connected to the heat exchange channel (100) through the bridging structure (400).

13. The heat exchange device according to claim 12, wherein, The bridging structure (400) includes a bridging pipe; the heat exchange device includes a temperature distribution plate (130) and a flow channel plate (140), and the heat exchange flow channel (100) is disposed between the temperature distribution plate (130) and the flow channel plate (140); The manifold (700) is provided with a first connecting hole, and the temperature equalization plate (130) is provided with a second connecting hole corresponding to the first connecting hole. The two ends of the bridge pipe are respectively connected to the first connecting hole and the second connecting hole.

14. The heat exchange device according to claim 13, wherein, The manifold (700) includes a first manifold (710) and a second manifold (720), and the heat exchange channel (100) includes a first heat exchange channel (110) and a second heat exchange channel (120); The first manifold (710) is connected to the first heat exchange channel (110) through the bridge pipe, and the second manifold (720) is connected to the second heat exchange channel (120) through the bridge pipe.

15. The heat exchange device according to any one of claims 1-14, wherein, At least two of the heat exchange channels (100) constitute a heat exchange channel group (800); The number of heat exchange channel groups (800) is multiple, and the multiple heat exchange channel groups (800) are arranged at intervals along the first direction; In each of the heat exchange channel groups (800), the intermittently arranged confluence channels (300) and heat exchange channels (100) are connected by the bridging structure (400).

16. The heat exchange device according to claim 15, wherein, The heat exchange channel group (800) includes two first heat exchange channels (110) and a second heat exchange channel (120) located between the two first heat exchange channels (110). The two first heat exchange channels (110) are connected, and the first heat exchange channel (110) and the second heat exchange channel (120) are independent of each other. The confluence channel (300) includes a first confluence channel (310) and a second confluence channel (320), the first heat exchange channel (110) is connected to the first confluence channel (310) through the bridging structure (400), and / or the second heat exchange channel (120) is connected to the second confluence channel (320) through the bridging structure (400).

17. A battery pack, wherein, Includes a battery (900) and a heat exchange device as described in any one of claims 1-16; The heat exchange device exchanges heat with the battery (900).

18. The battery pack according to claim 17, wherein, The battery has at least two heat-generating zones with different heat outputs; At least two heat exchange channels (100) are provided in a one-to-one correspondence with the at least two heating zones, and each heat exchange channel (100) is used to exchange heat with the corresponding heating zone.

19. The battery pack according to claim 18, wherein, At least two of the heating zones include a second heating zone (920) and a first heating zone (910) located on both sides of the second heating zone (920), wherein the heat output of the first heating zone (910) is greater than that of the second heating zone (920); At least two heat exchange channels (100) include a second heat exchange channel (120) and a first heat exchange channel (110) located on both sides of the second heat exchange channel (120); The first heat exchange channel (110) exchanges heat with the first heating zone (910), and the second heat exchange channel (120) exchanges heat with the second heating zone (920).

20. The battery pack according to any one of claims 17-19, wherein, The battery (900) includes a plurality of batteries, which are arranged at intervals along a first direction; Each of the batteries (900) exchanges heat with its corresponding heat exchange channel group.

21. An electrical appliance, wherein, It includes an electrical device and a battery pack as described in any one of claims 17-20, wherein the battery pack is electrically connected to the electrical device and is used to provide electrical energy to the electrical device.

Images