Heat exchange mechanism and battery pack

Abstract

The utility model provides a heat exchange mechanism and a battery pack, and relates to the technical field of batteries. The heat exchange mechanism comprises a heat exchange plate and a heat exchange column. A liquid inlet channel and a liquid outlet channel are arranged in the heat exchange plate in a stacked mode in the first direction. The heat exchange column is arranged on one side face of the heat exchange plate in the first direction and comprises a first pipeline and a second pipeline which are arranged in a nested mode, the first pipeline and the second pipeline communicate with the liquid inlet channel and the liquid outlet channel correspondingly, and the first pipeline communicates with the second pipeline, so that a heat exchange medium can sequentially flow through the liquid inlet channel, the first pipeline, the second pipeline and the liquid outlet channel. The side face, provided with the heat exchange columns, of the heat exchange plate forms a first heat exchange face perpendicular to the first direction, the peripheral face of each heat exchange column forms a second heat exchange face parallel to the first direction, and heat exchange is conducted on the same heat source through the first heat exchange faces and the second heat exchange faces. The battery pack provided by the utility model adopts the heat exchange mechanism. The heat exchange mechanism and the battery pack provided by the utility model can solve the problem of poor heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a heat exchange mechanism and a battery pack. Background Art

[0002] With the increase in the use scenarios of new energy, the requirements for batteries are also getting higher and higher. Compared with cylindrical batteries, prismatic batteries can use the space in the box more effectively, making the volume utilization rate higher. Generally, the outer shell of a single battery is in the shape of a hexagonal prism, which is more conducive to the close fit between batteries and improves the space utilization and energy density of the battery pack. While the close fit of the battery improves the energy density, it also poses higher challenges to the heat dissipation and cooling inside the battery pack. In the prior art, a liquid cooling plate is generally provided at the bottom of the battery to achieve heat exchange for the prismatic battery, but the heat dissipation effect of the prismatic battery is poor and it is difficult to meet actual needs. Utility Model Content

[0003] The utility model aims to provide a heat exchange mechanism, which can improve the technical problem in the prior art that the heat dissipation effect is poor and cannot meet the actual needs.

[0004] The utility model also aims to provide a battery pack, which can improve the technical problem in the prior art that the heat dissipation effect is poor and difficult to meet actual needs.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the utility model provides a heat exchange mechanism, the heat exchange mechanism comprising:

[0007] A heat exchange plate, wherein a liquid inlet channel and a liquid outlet channel are stacked along a first direction; and

[0008] A heat exchange column is arranged on a side of the heat exchange plate along a first direction, and includes a first pipe and a second pipe arranged in a nested manner, one end of the first pipe and the second pipe are respectively connected to the liquid inlet channel and the liquid outlet channel, and the other ends of the first pipe and the second pipe are connected to each other, so that the heat exchange medium can flow through the liquid inlet channel, the first pipe, the second pipe, and the liquid outlet channel in sequence;

[0009] The heat exchange plate is arranged on the side of the heat exchange column to form a first heat exchange surface perpendicular to the first direction, and the outer peripheral surface of the heat exchange column forms a second heat exchange surface parallel to the first direction, so as to exchange heat with the same heat source through the first heat exchange surface and the second heat exchange surface.

[0010] Optionally, the first pipe is sleeved on the outer periphery of the second pipe, and the liquid inlet channel is closer to the first heat exchange surface than the liquid outlet channel.

[0011] Optionally, the heat exchange plate is disposed above the heat exchange column so that the flow direction of the first pipeline is along the direction of gravity.

[0012] Optionally, the second pipe is sleeved on the outer periphery of the first pipe, and the liquid outlet channel is closer to the first heat exchange surface than the liquid inlet channel.

[0013] Optionally, on a side away from the heat exchange plate, one of the first pipe and the second pipe has a bottom plate, the bottom plate closes one end of the heat exchange column away from the heat exchange plate; the other of the first pipe and the second pipe is spaced from the bottom plate.

[0014] Optionally, the first pipe penetrates into the liquid inlet channel from the outside of the heat exchange plate, and the second pipe penetrates into the liquid outlet channel through the liquid inlet channel, or the second pipe penetrates into the liquid inlet channel from the outside of the heat exchange plate, and the first pipe penetrates into the liquid outlet channel through the liquid inlet channel; wherein, after respectively penetrating into the liquid inlet channel and the liquid outlet channel, the first pipe and the second pipe are respectively provided with through holes.

[0015] Optionally, the second heat exchange surface forms a plurality of contact planes, each of which contacts a heat source surface.

[0016] Optionally, there are a plurality of heat exchange columns, the plurality of heat exchange columns are arranged at intervals, a plurality of the first pipes are connected to the liquid inlet channel, and a plurality of the second pipes are connected to the liquid outlet channel.

[0017] Optionally, the heat exchange plate includes a plurality of groups of the liquid inlet channels and the liquid outlet channels spaced apart along the second direction, and each group of the liquid inlet channels and the liquid outlet channels is provided with a plurality of the heat exchange columns connected thereto in the extension direction thereof, wherein the plurality of the liquid inlet channels are connected via a first confluence device disposed at one end of the heat exchange plate; and the plurality of the liquid outlet channels are connected via a second confluence device disposed at one end of the heat exchange plate.

[0018] A battery pack comprises a box, a plurality of battery cells and the above-mentioned heat exchange mechanism; the plurality of battery cells are arranged inside the box, the heat exchange plate is arranged at the ends of the plurality of battery cells; and any one of the heat exchange columns is surrounded by the plurality of battery cells.

[0019] The heat exchange mechanism and battery pack provided by the utility model have the following beneficial effects compared with the prior art:

[0020] When the prismatic battery is mounted on the heat exchange plate, the end face of the prismatic battery is attached to the first heat exchange surface, and the circumference of the prismatic battery can be attached to the second heat exchange surface; the end face and side face of the prismatic battery exchange heat in a face-to-face contact manner, so that the prismatic battery forms multi-faceted cooling, and the cooling effect of each cooling surface is effectively improved, thereby improving the cooling and heat dissipation effect of the prismatic battery. Based on this, the heat exchange mechanism and battery pack can improve the technical problem of poor heat dissipation effect in the prior art that is difficult to meet actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 An exploded view of the heat exchange mechanism and the prismatic battery provided in the first embodiment of the present application;

[0023] Figure 2 A partial view of a cross-sectional view of a heat exchange mechanism provided in the first embodiment of the present application;

[0024] Figure 3 for Figure 1 Schematic diagram of the enlarged structure at X in the middle;

[0025] Figure 4 A schematic diagram of the coordination of a portion of the heat exchange mechanism and a portion of the prismatic battery provided in the first embodiment of the present application;

[0026] Figure 5 for Figure 1 Schematic diagram of the enlarged structure at Y in the middle;

[0027] Figure 6 A partial view of a cross-sectional view of another heat exchange mechanism provided in the first embodiment of the present application;

[0028] Figure 7 This is an exploded view of the battery pack provided in the second embodiment of the present application.

[0029] Icons: 10-battery pack; 11-box; 12-prismatic battery; 13-heat exchange mechanism; 100-heat exchange plate; 101-first heat exchange surface; 102-through hole; 110-liquid inlet channel; 111-first confluence device; 1111-first confluence part; 1112-first pipeline; 120-liquid outlet channel; 121-second confluence device; 1211-second confluence part; 1212-second pipeline; 200-heat exchange column; 201-second heat exchange surface; 210-first pipeline; 211-bottom plate; 220-second pipeline. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0034] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0035] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0036] First embodiment

[0037] See also Figure 1 In this embodiment, a heat exchange mechanism 13 is provided, which can be applied to the battery pack 10 to provide thermal management for the batteries in the battery pack 10, so as to ensure that the batteries maintain a stable temperature state, thereby improving the stability of battery operation, extending the service life of the batteries, and improving the overall safety of the battery pack 10. The heat exchange mechanism 13 provided in this embodiment can improve the technical problem of poor heat dissipation effect of the prismatic battery 12 in the prior art.

[0038] In this embodiment, please refer to Figure 1 and Figure 2 The heat exchange mechanism 13 includes a heat exchange plate 100 and a heat exchange column 200. The heat exchange plate 100 has a stacked liquid inlet channel 110 and a liquid outlet channel 120 in the first direction; the liquid inlet channel 110 and the liquid outlet channel 120 are arranged at intervals in the first direction, which is convenient for the management of the flow channel and the installation of the flow channel. The heat exchange column 200 is arranged on a side of the heat exchange plate 100 along the first direction. In other words, the central axis of the heat exchange column 200 extends along the first direction. The heat exchange column 200 includes a first pipe 210 and a second pipe 220 which are nested, one end of the first pipe 210 and the second pipe 220 are connected to the liquid inlet channel 110 and the liquid outlet channel 120 respectively, and the other ends of the first pipe 210 and the second pipe 220 are connected to each other, so that the heat exchange medium can flow through the liquid inlet channel 110, the first pipe 210, the second pipe 220, and the liquid outlet channel 120 in sequence. That is, the inner channel of the first pipe 210 is connected to the liquid inlet channel 110, and the inner channel of the second pipe 220 is connected to the liquid outlet channel 120; at the same time, the inner channel of the first pipe 210 is connected to the inner channel of the second pipe 220, so that the heat exchange medium can pass through the inner channel of the first pipe 210, the inner channel of the second pipe 220 and the liquid outlet channel 120 in sequence after being introduced from the liquid inlet channel 110. The first direction can be regarded as the thickness direction of the heat exchange plate 100, and can also be regarded as Figure 1 The direction indicated by the U arrow.

[0039] For further information, see Figure 3 The heat exchange plate 100 is provided with a side surface of the heat exchange column 200 to form a first heat exchange surface 101 perpendicular to the first direction, and the outer peripheral surface of the heat exchange column 200 forms a second heat exchange surface 201 parallel to the first direction, so as to exchange heat with the same heat source through the first heat exchange surface 101 and the second heat exchange surface 201. When the prismatic battery 12 is mounted on the heat exchange plate 100, the end surface of the prismatic battery 12 contacts the first heat exchange surface 101, and one of the side surfaces of the prismatic battery 12 contacts the second heat exchange surface.

[0040] As described above, when the prismatic battery 12 is assembled on the heat exchange plate 100, the end face of the prismatic battery 12 is attached to the first heat exchange surface 101, and the peripheral side of the prismatic battery 12 can be attached to the second heat exchange surface 201; that is, the first heat exchange surface 101 is used to exchange heat with the end face of the prismatic battery 12, and the second heat exchange surface 201 is used to exchange heat with the side face of the prismatic battery 12. The end face and the side face of the prismatic battery 12 are heat exchanged in a face-to-face contact manner, so that the prismatic battery 12 forms multi-face cooling, thereby improving the cooling and heat dissipation effect of the side face of the prismatic battery 12. At the same time, the heat exchange column 200 can simultaneously exchange heat with multiple adjacent prismatic batteries 12, which is beneficial to the overall space utilization and improves the overall energy density of the battery pack. Based on this, the heat exchange mechanism 13 and the battery pack 10 can improve the technical problem of the poor heat dissipation effect in the prior art that is difficult to meet actual needs, while ensuring the space utilization of the battery pack and improving the energy density of the battery pack.

[0041] It is worth noting that in the present embodiment, in the battery pack 10, a plurality of prismatic batteries 12 are arranged on the heat exchange plate 100, and each heat exchange column 200 is surrounded by a plurality of prismatic batteries 12; that is, optionally, the second heat exchange surface 201 forms a plurality of contact planes, and each contact plane is in contact with a heat source surface; of course, it can also be regarded as that a plurality of second heat exchange surfaces 201 can be formed on the periphery of each heat exchange column 200, and each second heat ring surface is in surface contact with a prismatic battery 12, so that each prismatic battery 12 is in contact with at least one first heat exchange surface 101 and one second heat exchange surface 201, so as to achieve the purpose of improving heat exchange efficiency and improving space utilization.

[0042] Optionally, in this embodiment, in order to reasonably utilize the space in the box 11 of the battery pack 10, the heat exchange column 200 is also set to a prismatic shape, and the shape and size of the heat exchange column 200 are the same as the shape and size of the prismatic battery 12, which is conducive to the heat exchange column 200 and the prismatic battery 12 filling the space in the box 11, improving the space utilization of the box 11, and facilitating the improvement of the overall energy density. For example, the heat exchange column 200 and the prismatic battery 12 are both hexagonal. Of course, the heat exchange column 200 and the prismatic battery 12 can also be prisms of other shapes, such as triangular prisms, quadrangular prisms, or pentagonal prisms.

[0043] In this embodiment, the heat exchange column 200 and the prismatic battery 12 are both hexagonal prisms. Each heat exchange column 200 is surrounded by six prismatic batteries 12, and the six prismatic batteries 12 are in contact with at least one second heat exchange surface 201 of the heat exchange column 200.

[0044] Further, in this embodiment, the heat exchange plate 100 includes a plurality of groups of liquid inlet channels 110 and liquid outlet channels 120 arranged at intervals along the second direction, and each group of liquid inlet channels 110 and liquid outlet channels 120 is provided with a plurality of heat exchange columns 200 connected thereto in the extending direction thereof, wherein the plurality of liquid inlet channels 110 are connected via a first confluence device 111 arranged at one end of the heat exchange plate 100; and the plurality of liquid outlet channels 120 are connected via a second confluence device 121 arranged at one end of the heat exchange plate 100. The second direction can be regarded as the width direction of each heat exchange plate 100, or as Figure 1 Correspondingly, the extension direction of each group of liquid inlet channels 110 and liquid outlet channels 120 can also be regarded as the length direction of the heat exchange plate 100, or as Figure 1 The V arrow indicates the direction.

[0045] Optionally, see Figure 3 , the first confluence device 111 may include a plurality of first confluence parts 1111 and a plurality of first pipelines 1112; a plurality of first confluence parts 1111 are provided with grooves connected to the liquid inlet channel 110, and any two adjacent first confluence parts 1111 are connected by a first pipeline 1112, so that the grooves in the two adjacent first confluence parts 1111 are connected through the internal channel of the first pipeline 1112; thereby, the plurality of liquid inlet channels 110 can be connected to each other, thereby facilitating liquid inflow. Similarly, the second confluence device 121 may include a plurality of second confluence parts 1211 and a plurality of second pipelines 1212; a plurality of second confluence parts 1211 are provided with grooves connected to the liquid outlet channel 120, and any two adjacent second confluence parts 1211 are connected by a second pipeline 1212, so that the grooves in the two adjacent second confluence parts 1211 are connected through the internal channel of the second pipeline 1212; thereby, the plurality of liquid outlet channels 120 can be connected to each other, thereby facilitating liquid outflow. In this embodiment, the first confluence portion 1111 and the second confluence portion 1211 are integrally formed and isolated from each other to form a cavity, that is, it can be regarded as two grooves opened on an integral structure, one groove corresponds to the liquid inlet channel, and the other groove corresponds to the liquid outlet channel.

[0046] As described above, taking a heat exchange plate 100 as an example, each heat exchange plate 100 is provided with a plurality of heat exchange columns 200, and the plurality of heat exchange columns 200 are arranged along the length direction of the heat exchange plate 100. It is worth noting that each heat exchange plate 100 is provided with a plurality of prismatic batteries 12, and each heat exchange column 200 is surrounded by a plurality of prismatic batteries 12. In order to make reasonable use of the space on each heat exchange plate 100, as shown in FIG. Figure 4On the heat exchange plate 100, two opposite sides of some prismatic batteries 12 are in contact with the second heat exchange surface 201 of the heat exchange column 200. Based on this, not only the heat exchange efficiency of the prismatic batteries 12 can be improved, but also the space on the heat exchange plate 100 can be fully utilized, which is beneficial to improving the energy density of the battery pack 10.

[0047] It should be noted that in Figure 4 In the illustrated embodiment, two adjacent heat exchange columns 200 are marked as A and B, wherein the multiple prismatic batteries 12 surrounding the A heat exchange column 200 and the multiple prismatic batteries 12 surrounding the B heat exchange column 200 have an overlapping prismatic battery 12, wherein the prismatic battery 12 can be marked as C, and it can also be regarded that the C prismatic battery 12 can be regarded not only as the prismatic battery 12 surrounding the A heat exchange column 200, but also as the prismatic battery 12 surrounding the B heat exchange column 200. It is worth noting that at this time, the total number of prismatic batteries 12 surrounding the A heat exchange column 200 and the prismatic batteries 12 surrounding the B heat exchange column 200 is 11.

[0048] Of course, in other embodiments of the present application, other arrangements may be used for the arrangement of the plurality of prismatic batteries 12 on the heat exchange plate 100. For example, the plurality of prismatic batteries 12 surrounding the A heat exchange column 200 and the plurality of prismatic batteries 12 surrounding the B heat exchange column 200 do not have overlapping prismatic batteries 12, that is, the total number of the plurality of prismatic batteries 12 surrounding the A heat exchange column 200 and the plurality of prismatic batteries 12 surrounding the B heat exchange column 200 is 12.

[0049] In this embodiment, the first pipe 210 is sleeved on the outer periphery of the second pipe 220, and the liquid inlet channel 110 is closer to the first heat exchange surface 101 than the liquid outlet channel 120. That is, the liquid inlet channel 110 is arranged on the side of the heat exchange plate 100 close to the first heat exchange surface 101, while the liquid outlet channel 120 is arranged on the side of the liquid inlet channel 110 away from the first heat exchange surface 101. At this time, during the process of liquid inlet channel 110, the newly introduced heat exchange medium in the liquid inlet channel 110 can exchange heat with the prismatic battery 12 through the first heat exchange surface 101, thereby providing efficient heat exchange for the prismatic battery 12. The first pipe 210 is sleeved on the periphery of the second pipe 220, so that after the liquid is introduced into the liquid inlet channel 110, the newly introduced heat exchange medium can first enter the first pipe 210, and the first pipe 210 surrounds the outside of the second pipe 220, that is, the periphery of the first pipe 210 forms a second heat exchange surface 201; since the interior of the first pipe 210 is the newly introduced heat exchange medium, it has a stronger heat exchange capacity, thereby improving the heat exchange effect of the prismatic battery 12 and improving the thermal management efficiency.

[0050] After the heat exchange medium passes through the internal channel of the first pipe 210, since the heat exchange medium has undergone heat exchange, the heat exchange medium with increased temperature is discharged from the internal space of the second pipe 220 located inside the first pipe 210 to the liquid outlet channel 120. Since the internal space of the second pipe 220 and the second heat exchange surface 201 are separated by the internal space of the first pipe 210, the influence of the heat exchange medium in the second pipe 220 on the prismatic battery 12 can be reduced. At the same time, since the liquid outlet channel 120 and the first heat exchange surface 101 are separated by the liquid inlet channel 110, the influence of the heat exchange medium in the liquid outlet channel 120 on the prismatic battery 12 can be reduced, thereby ensuring that the prismatic battery 12 can efficiently exchange heat and improve the heat exchange efficiency.

[0051] Optionally, in this embodiment, the heat exchange plate 100 is disposed above the heat exchange column 200 so that the flow direction of the first pipe 210 is along the gravity direction. That is, when the prismatic battery 12 is mounted on the heat exchange plate 100, the top surface of the prismatic battery 12 contacts the heat exchange plate 100, and the first heat exchange surface 101 on the heat exchange plate 100 can provide heat exchange to the top of the prismatic battery 12.

[0052] In addition, the heat exchange plate 100 is arranged above the heat exchange column 200 so that the heat exchange medium enters the internal channel of the first pipe 210 through the gravity of the heat exchange medium, which can ensure that the heat exchange medium can effectively and evenly enter the internal channel of the first pipe 210, and can avoid the heat exchange medium in the first pipe 210 from being unable to flow in time due to insufficient pressure of the heat exchange medium, thereby achieving the purpose of improving the heat exchange efficiency.

[0053] Optionally, in some other implementations of this embodiment, the second pipe 220 is sleeved on the outer periphery of the first pipe 210, and is closer to the first heat exchange surface 101 than the liquid inlet channel 110 and the liquid outlet channel 120. That is to say, the liquid inlet channel 110 is arranged on the side of the heat exchange plate 100 away from the first heat exchange surface 101, and the outer peripheral wall of the second pipe 220 forms the second heat exchange surface 201. In this way, during the process of liquid inlet into the liquid inlet channel 110, heat exchange between the heat exchange medium and the prismatic battery 12 can be avoided, and the uniformity of the heat exchange medium entering the second pipe 22 can be improved, so that the heat exchange medium can have a high heat exchange performance when it is introduced into multiple heat exchange columns 200, which can effectively improve the heat exchange effect for the prismatic battery 12, and make multiple heat exchange columns 200 on the same heat exchange plate 100 have the same heat exchange effect, ensuring the uniformity of the heat exchange effect in the entire battery pack 10.

[0054] In this example, see Figure 5, on the side away from the heat exchange plate 100, one of the first pipe 210 and the second pipe 220 has a bottom plate 211, and the bottom plate 211 closes the end of the heat exchange column 200 away from the heat exchange plate 100; the other of the first pipe 210 and the second pipe 220 is spaced from the bottom plate 211. For example, taking the first pipe 210 being sleeved on the outside of the second pipe 220 as an example, at this time, the end of the first pipe 210 away from the heat exchange plate 100 is provided with a bottom plate 211, so that the end of the first pipe 210 away from the heat exchange plate 100 is closed by the bottom plate 211; and the end of the second pipe 220 away from the heat exchange plate 100 is spaced from the bottom plate 211, so that the internal channel of the first pipe 210 at the end of the second pipe 220 away from the heat exchange plate 100 is connected with the internal channel of the second pipe 220, so that the heat exchange medium can enter the internal channel of the second pipe 220 from the end of the second pipe 220 away from the heat exchange plate 100 after entering the internal channel of the first pipe 210.

[0055] Of course, in other embodiments of the present application, other methods may be used to achieve communication between the internal channel of the first pipe 210 and the internal channel of the second pipe 220. For example, a through hole is provided on the side wall of the second pipe 220 so that the internal channel of the first pipe 210 and the internal channel of the second pipe 220 are communicated through the through hole.

[0056] Optionally, see Figure 2 , the first pipe 210 penetrates into the liquid inlet channel 110 from the outside of the heat exchange plate 100, and the second pipe 220 penetrates into the liquid outlet channel 120 through the liquid inlet channel 110, or the second pipe 220 penetrates into the liquid inlet channel 110 from the outside of the heat exchange plate 100, and the first pipe 210 penetrates into the liquid outlet channel 120 through the liquid inlet channel 110. Among them, since the liquid inlet channel 110 and the liquid outlet channel 120 are stacked along the first direction, and the heat exchange column 200 is arranged on one side of the heat exchange plate 100 along the first direction, based on this, if one of the first pipe 210 and the second pipe 220 is to be connected with the liquid outlet channel 120, it needs to pass through the liquid inlet channel 110.

[0057] In this embodiment, an example is given in which the inner channel of the first pipe 210 is connected to the liquid inlet channel 110, and the inner channel of the second pipe 220 is connected to the liquid outlet channel 120. The first pipe 210 penetrates the liquid inlet channel 110, and the end of the first pipe 210 is connected to the inner wall of the liquid inlet channel 110 close to the liquid outlet channel 120, thereby improving the stability of the first pipe 210, and in order for the liquid inlet channel 110 to communicate with the inner space of the first pipe 210, a through hole 102 is provided on the end of the first pipe 210 extending into the liquid inlet channel 110. Similarly, the second pipe 220 penetrates the liquid outlet channel 120, and the end of the second pipe 220 is connected to the inner wall of the liquid outlet channel 120 away from the liquid inlet channel 110, thereby improving the stability of the second pipe 220, and in order for the liquid outlet channel 120 to communicate with the inner space of the second pipe 220, a through hole 102 is provided on the end of the second pipe 220 extending into the liquid outlet channel 120.

[0058] Of course, in other embodiments of the present application, the internal channel of the first pipe 210 may be connected to the liquid inlet channel 110 in other ways. Figure 6 , the first pipe 210 passes through the inner wall of the inlet channel 110 away from the outlet channel 120, and is spaced from the inner wall of the inlet channel 110 close to the outlet channel 120; the end opening of the first pipe 210 is connected to the inlet channel 110. Similarly, in other embodiments, the inner channel of the second pipe 220 can be connected to the outlet channel 120 in other ways. For example, the second pipe 220 passes through the inner wall of the outlet channel 120 close to the inlet channel 110, and is spaced from the inner wall of the outlet channel 120 away from the inlet channel 110; the end opening of the second pipe 220 is connected to the outlet channel 120.

[0059] To summarize, when the prismatic battery 12 is assembled onto the heat exchange plate 100, the end face of the prismatic battery 12 is attached to the first heat exchange surface 101, and the peripheral side of the prismatic battery 12 can be attached to the second heat exchange surface 201; the end face and the side face of the prismatic battery 12 exchange heat through face-to-face contact, so that the prismatic battery 12 forms multi-faceted cooling, and the cooling effect of each cooling surface is effectively improved, thereby improving the cooling and heat dissipation effect of the prismatic battery 12. At the same time, the heat exchange column 200 can simultaneously exchange heat for multiple adjacent prismatic batteries 12, which is beneficial to the overall space utilization and improves the overall energy density of the battery pack.

[0060] Second embodiment

[0061] See also Figure 7In this embodiment, a battery pack 10 is provided, and the battery pack 10 adopts the heat exchange mechanism 13 provided in the first embodiment. Of course, the battery pack 10 also includes a box body 11 and a plurality of battery cells. The plurality of battery cells are arranged inside the box body 11, and the plurality of battery cells are all prismatic; that is, the battery cells provided in this embodiment are equivalent to the prismatic batteries 12 provided in the first embodiment. The heat exchange plate 100 is arranged at the end of the plurality of battery cells; and any heat exchange column 200 is surrounded by the plurality of battery cells.

[0062] Based on this, the heat exchange effect can be provided to the multiple battery cells through the multiple second heat exchange surfaces 201 on the heat exchange column 200. At the same time, the cooling and heat dissipation effect can be provided to the battery cells through the first heat exchange surface 101 on the heat exchange plate 100, which can improve the cooling efficiency of the battery cells, ensure the stable operation of the battery cells, and increase the service life of the battery cells. At the same time, it is beneficial to the overall space utilization and improve the overall energy density of the battery pack. In addition, since the battery pack 10 provided in this embodiment adopts the heat exchange mechanism 13 provided in the first embodiment, the battery pack 10 can improve the technical problem that the heat dissipation effect in the prior art is poor and difficult to meet actual needs.

[0063] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A heat exchange mechanism, characterized in that: The heat exchange mechanism (13) comprises: A heat exchange plate (100) having a liquid inlet channel (110) and a liquid outlet channel (120) stacked in a first direction; and A heat exchange column (200) is arranged on a side surface of the heat exchange plate (100) along a first direction, and comprises a first pipe (210) and a second pipe (220) which are nested, wherein one end of the first pipe (210) and the second pipe (220) are respectively connected to the liquid inlet channel (110) and the liquid outlet channel (120), and the other ends of the first pipe (210) and the second pipe (220) are connected to each other, so that the heat exchange medium flows through the liquid inlet channel (110), the first pipe (210), the second pipe (220), and the liquid outlet channel (120) in sequence; The heat exchange plate (100) is provided with a side surface of the heat exchange column (200) to form a first heat exchange surface (101) perpendicular to the first direction, and the outer peripheral surface of the heat exchange column (200) forms a second heat exchange surface (201) parallel to the first direction, so as to perform heat exchange on the same heat source through the first heat exchange surface (101) and the second heat exchange surface (201).

2. The heat exchange mechanism according to claim 1, characterized in that: The first pipe (210) is sleeved on the outer circumference of the second pipe (220), and the liquid inlet channel (110) is closer to the first heat exchange surface (101) than the liquid outlet channel (120).

3. The heat exchange mechanism according to claim 2, characterized in that: The heat exchange plate (100) is disposed above the heat exchange column (200) so that the flow direction of the first pipe (210) is along the direction of gravity.

4. The heat exchange mechanism according to claim 1, characterized in that: The second pipe (220) is sleeved on the outer circumference of the first pipe (210), and the liquid outlet channel (120) is closer to the first heat exchange surface (101) than the liquid inlet channel (110).

5. The heat exchange mechanism according to claim 1, characterized in that: On the side away from the heat exchange plate (100), one of the first pipe (210) and the second pipe (220) has a bottom plate, and the bottom plate closes one end of the heat exchange column (200) away from the heat exchange plate (100); the other of the first pipe (210) and the second pipe (220) is spaced from the bottom plate.

6. The heat exchange mechanism according to claim 1, characterized in that: The first pipe (210) penetrates into the liquid inlet channel (110) from the outside of the heat exchange plate (100), and the second pipe (220) penetrates into the liquid inlet channel (110) to penetrate into the liquid outlet channel (120); or, the second pipe (220) penetrates into the liquid inlet channel (110) from the outside of the heat exchange plate (100), and the first pipe (210) penetrates into the liquid outlet channel (120); wherein, after respectively penetrating into the liquid inlet channel (110) and the liquid outlet channel (120), the first pipe (210) and the second pipe (220) are respectively provided with through holes.

7. The heat exchange mechanism according to claim 1, characterized in that: The second heat exchange surface (201) forms a plurality of contact planes, each of which is in contact with a heat source surface.

8. The heat exchange mechanism according to any one of claims 1 to 7, characterized in that: There are a plurality of heat exchange columns (200), and the plurality of heat exchange columns (200) are arranged at intervals, and a plurality of the first pipes (210) are connected to the liquid inlet channel (110), and a plurality of the second pipes (220) are connected to the liquid outlet channel (120).

9. The heat exchange mechanism according to any one of claims 1 to 7, characterized in that: The heat exchange plate (100) comprises a plurality of groups of liquid inlet channels (110) and liquid outlet channels (120) arranged at intervals along a second direction, and each group of the liquid inlet channels (110) and liquid outlet channels (120) is provided with a plurality of heat exchange columns (200) in communication with the liquid inlet channels (110) and liquid outlet channels (120) in the extension direction thereof, wherein the plurality of liquid inlet channels (110) are connected via a first confluence device (111) arranged at one end of the heat exchange plate (100); and the plurality of liquid outlet channels (120) are connected via a second confluence device (121) arranged at one end of the heat exchange plate (100).

10. A battery pack, characterized in that: It comprises a box body (11), a plurality of battery cells and a heat exchange mechanism (13) as claimed in any one of claims 1 to 9; the plurality of battery cells are arranged inside the box body (11), the heat exchange plate (100) is arranged at the ends of the plurality of battery cells; and any one of the heat exchange columns (200) is surrounded by the plurality of battery cells.

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