Heat exchange plate and battery pack

Abstract

The application relates to the technical field of heat exchange, and discloses a heat exchange plate and a battery pack. The heat exchange plate comprises a first plate body, a second plate body and a flow disturbing piece. The first plate body has a first surface and a second surface arranged along the thickness direction, and the first surface of the first plate body is provided with a heat exchange flow channel; the second plate body is connected with the first surface of the first plate body, and the surface of the second plate body away from the first plate body is respectively provided with a first interface and a second interface in communication with the heat exchange flow channel; the heat exchange medium can be input from one end of the heat exchange flow channel through the first interface, and the heat exchange medium can be discharged from the other end of the heat exchange flow channel through the second interface; the flow disturbing piece is located in the heat exchange flow channel and extends along the heat exchange flow channel, the flow disturbing piece is made of a spiral wire, and the flow disturbing piece comprises a plurality of first flow disturbing sections and second flow disturbing sections. In the above manner, the mixing effect between different layers of heat exchange medium in the heat exchange flow channel can be improved, and the temperature of the heat exchange medium at each position in the heat exchange flow channel is more uniform.

Description

Technical Field

[0001] This application relates to the field of heat exchange technology, specifically to a heat exchange plate and a battery pack. Background Technology

[0002] Electric vehicles generate a lot of heat during operation. As battery energy density increases, higher-power liquid cooling plates are needed. Currently, the industry uses dual-sided cooling or dual-sided cooling of the top and bottom of the battery to meet higher cooling capacity. Although this cooling method effectively increases the heat exchange area, it also significantly increases the cost of the entire battery cooling system. Currently, dual-sided cooling solutions are only used in high-end electric vehicles.

[0003] Currently, some liquid cooling plates are constructed by welding two molded aluminum plates together to form a flow channel cavity. When the coolant flows through the flow channel cavity, it carries away the heat on the cooling plate to dissipate heat from the battery pack. However, since the flow channel cavity in this form is roughly rectangular in shape and has a relatively smooth surface, the coolant is prone to forming a fluid boundary layer and a thermal boundary layer within the flow channel cavity, resulting in low heat transfer efficiency of the liquid cooling plate. Utility Model Content

[0004] This application provides a heat exchange plate and a battery pack, which can improve the mixing effect between different layers of heat exchange medium in the heat exchange channel, and help to make the temperature of the heat exchange medium at various locations in the heat exchange channel more uniform.

[0005] This application provides a heat exchange plate, comprising:

[0006] The first plate has a first surface and a second surface arranged along the thickness direction, and the first surface of the first plate is provided with a heat exchange channel.

[0007] The second plate is connected to the first surface of the first plate. The surface of the second plate away from the first plate has a first interface and a second interface that communicate with the heat exchange channel. The heat exchange medium can be input from one end of the heat exchange channel through the first interface and discharged from the other end of the heat exchange channel through the second interface.

[0008] A flow disruptor is located within and extends along the heat exchange channel. The flow disruptor is made of spiral wire and includes a plurality of first flow disruptor sections and second flow disruptor sections. The flow disruptor is configured to have different flow states when the heat exchange medium flows through the first flow disruptor sections and the second flow disruptor sections.

[0009] In one embodiment of this application, the spiral wires of the first turbulence section and the spiral wires of the second turbulence section have different filament shapes.

[0010] In one embodiment of this application, the spiral wires of the first turbulence section and the spiral wires of the second turbulence section have different wire diameters.

[0011] In one embodiment of this application, the end face of the first turbulence section formed by the spiral wire and the end face of the second turbulence section formed by the spiral wire have different shapes.

[0012] In one embodiment of this application, the end face of the first turbulence section formed by the spiral wire and the end face of the second turbulence section formed by the spiral wire have the same shape, but the end face diameters of the first turbulence section and the second turbulence section are different.

[0013] In one embodiment of this application, when the end face of the turbulence-disrupting component formed by the spiral wire is circular, the end face diameters of the first turbulence-disrupting section and the second turbulence-disrupting section are different, and a transition turbulence-disrupting section is provided between the first turbulence-disrupting section and the second turbulence-disrupting section. The turbulence-disrupting component comprises a plurality of first turbulence-disrupting sections and second turbulence-disrupting sections connected by the transition turbulence-disrupting section.

[0014] In one embodiment of this application, when the end face of the turbulence-disrupting element formed by the spiral wire is circular, the end face diameters of the first turbulence-disrupting section and the second turbulence-disrupting section are the same, and the spiral wires of the first turbulence-disrupting section and the second turbulence-disrupting section are wound with different pitches, or the spiral wires of the first turbulence-disrupting section and the second turbulence-disrupting section are wound with different helix angles.

[0015] In one embodiment of this application, when the end face of the baffle formed by the spiral wire is rectangular, the spiral wire length of the first baffle section and the spiral wire length of the second baffle section are different, the first baffle section and the second baffle section are connected to each other, and the baffle is composed of a plurality of interconnected first baffle sections and second baffle sections.

[0016] In one embodiment of this application, the second spoiler section includes a third segment and a fourth segment, the third segment and the fourth segment are respectively connected to a first spoiler section, and a first rounded transition section is provided at the connection between the third segment and the fourth segment and the first spoiler section.

[0017] In one embodiment of this application, the spiral wire of the first turbulence section includes a first segment and a second segment. A first connecting segment is provided at both ends of the first segment, and a second connecting segment is provided at both ends of the second segment. The first segment is connected to the second segment via the first and second connecting segments. The spiral wire of the second turbulence section includes a third segment and a fourth segment. A third connecting segment is provided at both ends of the third segment, and a fourth connecting segment is provided at both ends of the fourth segment. The third segment is connected to the fourth segment via the third and fourth connecting segments.

[0018] Wherein, the end of the first segment away from the second segment is connected to the fourth connecting segment of the adjacent fourth segment away from the third segment via the first connecting segment, and the end of the second segment away from the first segment is connected to the third connecting segment of the adjacent third segment away from the fourth segment via the second connecting segment.

[0019] In one embodiment of this application, a second rounded transition section is provided at the connection points between both ends of the first segment and the first connecting segment, and a third rounded transition section is provided at the connection points between both ends of the second segment and the second connecting segment; and / or,

[0020] The third segment is provided with a fourth rounded transition section at both ends of the connection with the third connecting segment, and the fourth segment is provided with a fifth rounded transition section at both ends of the connection with the fourth connecting segment.

[0021] In one embodiment of this application, the first turbulence section and / or the second turbulence section are connected to at least one inner wall of the heat exchange channel.

[0022] Accordingly, this application also provides a battery pack, including the heat exchange plate and single battery cell described in the above embodiments, wherein the single battery cell is thermally connected to the second plate of the heat exchange plate.

[0023] The beneficial effects of this application are:

[0024] By configuring the turbulence-inducing element in the heat exchange channel as described above, consisting of several first and second turbulence-inducing sections, it can not only disturb the heat exchange medium in the heat exchange channel, causing the flow of the heat exchange medium to change from laminar to turbulent, and continuously disrupting the boundary layer of the heat exchange medium, but also generate different degrees of turbulence when the heat exchange medium flows through the first and second turbulence-inducing sections of the turbulence-inducing element. This changes the turbulence state of the heat exchange medium when it flows through the connection between the first and second turbulence-inducing sections, further enhancing the disturbance effect of the turbulence-inducing element on the flow of the heat exchange medium in the heat exchange channel, improving the mixing effect between different layers of heat exchange medium in the heat exchange channel, and helping to make the temperature of the heat exchange medium in various locations in the heat exchange channel more uniform, thereby improving the heat exchange efficiency of the heat exchange plate. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the liquid cooling plate of this application;

[0027] Figure 2 yes Figure 1 The exploded structure diagram of the liquid cooling plate is shown.

[0028] Figure 3 yes Figure 1 A schematic diagram of the structure of the second plate of the liquid cooling plate shown;

[0029] Figure 4 This is a partial structural schematic diagram of the spoiler in this application;

[0030] Figure 5 This is a schematic diagram of the structure of the first embodiment of the spoiler in this application;

[0031] Figure 6 This is a schematic diagram of the structure of the second embodiment of the spoiler in this application;

[0032] Figure 7 yes Figure 6 A schematic diagram of the side structure of the spoiler shown;

[0033] Figure 8 This is a schematic diagram of the structure of the third embodiment of the spoiler in this application;

[0034] Figure 9 This is a schematic diagram of the structure of the fourth embodiment of the spoiler in this application;

[0035] Figure 10 yes Figure 9 A schematic diagram of the side structure of the shown spoiler;

[0036] Figure 11 yes Figure 9 A schematic diagram of the end face structure of the shown spoiler;

[0037] Figure 12 This is a schematic diagram of the structure of the fifth embodiment of the spoiler in this application;

[0038] Figure 13 yes Figure 12 A schematic diagram of the structure in the split state of the first and second turbulence sections;

[0039] Figure 14 yes Figure 12 A schematic diagram of the side structure of the shown spoiler;

[0040] Figure 15 yes Figure 12 The diagram shows the end face structure of the baffle.

[0041] Explanation of reference numerals in the attached figures:

[0042] 10. First plate; 11. Heat exchange channel; 12. Protrusion; 20. Second plate; 21. First interface; 22. Second interface; 30. Baffle; 31. First baffle section; 311. First segment; 3111. Second rounded transition section; 312. Second segment; 3121. Third rounded transition section; 313. First connecting section; 314. Second connecting section; 32. Second baffle section; 321. Third segment; 3211. Fourth rounded transition section; 322. Fourth segment; 3221. Fifth rounded transition section; 323. Third connecting section; 324. Fourth connecting section; 33. First rounded transition section; 34. Transition baffle section; 40. Spiral wire. Detailed Implementation

[0043] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to up, down, left, and right in the actual use or working state of the device, specifically the drawing directions in the accompanying drawings.

[0044] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "stacked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] Please refer to Figures 1 to 5 This application provides a heat exchange plate, including a first plate body 10, a second plate body 20, and a baffle 30.

[0046] Specifically, the first plate 10 has a first surface and a second surface arranged along its thickness direction. A heat exchange channel 11 is provided on the first surface of the first plate 10. The heat exchange channel 11 is a groove-shaped structure on the first surface of the first plate 10. The groove-shaped structure can be arranged in a "serpentine" or S-shaped manner on the first surface of the first plate 10 to form the heat exchange channel 11. A heat exchange medium is contained within the heat exchange channel 11, through which heat can be exchanged with objects such as batteries. Of course, the heat exchange channel 11 can also be a groove-like structure arranged in other ways; this is not a limitation.

[0047] It should be noted that when the heat exchange channel 11 is configured as a groove-like structure, the plate thickness of the heat exchange channel 11 and the corresponding position of the second surface of the first plate 10 is relatively small. In order to ensure the plate thickness and strength at the heat exchange channel 11, the second surface of the first plate 10 is provided with a protrusion 12 arranged along the extension direction of the heat exchange channel 11.

[0048] The second plate 20 is connected to the first surface of the first plate 10. The surface of the second plate 20 away from the first plate 10 has a first interface 21 and a second interface 22 that communicate with the heat exchange channel 11. The heat exchange medium can be input from one end of the heat exchange channel 11 through the first interface 21 and discharged from the other end of the heat exchange channel 11 through the second interface 22. When the second plate 20 is covered on the first plate 10, it can isolate the heat exchange channel 11 from the outside. The heat exchange channel 11 can be square or rectangular. The top wall of the heat exchange channel 11 is the structure of the second plate 20, and the bottom wall and side wall of the heat exchange channel 11 are the structures of the first plate 10, respectively. The first interface 21 and the second interface 22 can be set at positions adjacent to both ends of the heat exchange channel 11, thereby improving the flow performance of the heat exchange medium in the heat exchange channel 11, so that the heat exchange medium at the end of the heat exchange channel 11 can be discharged in time, and the heat exchange medium can be avoided from accumulating in the heat exchange channel 11.

[0049] The flow-deflecting element 30 is located within and extends along the heat exchange channel 11. The flow-deflecting element 30 is formed by winding a spiral wire 40 and includes several first flow-deflecting sections 31 and second flow-deflecting sections 32. The flow-deflecting element 30 is configured to have different flow states when the heat exchange medium flows through the first flow-deflecting sections 31 and the second flow-deflecting sections 32. The first plate 10, the second plate 20, and the spiral wire 40 can all be made of materials with good thermal conductivity, including but not limited to aluminum and aluminum alloys.

[0050] By configuring the turbulence-inducing element 30 in the heat exchange channel 11 as consisting of several first turbulence sections 31 and second turbulence sections 32, it can not only disturb the heat exchange medium in the heat exchange channel 11, causing the flow of the heat exchange medium to change from laminar flow to turbulent flow and continuously destroy the boundary layer of the heat exchange medium, but also generate different degrees of turbulence effect when the heat exchange medium flows through the first turbulence section 31 and the second turbulence section 32 of the turbulence-inducing element 30. This changes the turbulence state of the heat exchange medium when it flows through the connection between the first turbulence section 31 and the second turbulence section 32, further enhancing the disturbance effect of the turbulence-inducing element 30 on the flow of the heat exchange medium in the heat exchange channel 11, improving the mixing effect between different layers of heat exchange medium in the heat exchange channel 11, and helping to make the temperature of the heat exchange medium at various locations in the heat exchange channel 11 more uniform, thereby improving the heat exchange efficiency of the heat exchange plate.

[0051] In one embodiment, the spiral wires 40 of the first turbulence section 31 and the spiral wires 40 of the second turbulence section 32 have different wire shapes. Specifically, the cross-sectional shape of the spiral wires 40 of the first turbulence section 31 and the spiral wires 40 of the second turbulence section 32 can be circular, triangular, quadrilateral, pentagonal, hexagonal, etc. However, in specific applications, it is necessary to ensure that the cross-sectional shape of the spiral wires 40 of the first turbulence section 31 and the spiral wires 40 of the second turbulence section 32 is different, so that the structures of the first turbulence section 31 and the second turbulence section 32 are differentiated. This ensures that the heat exchange medium generates different flow states when flowing through the first turbulence section 31 and the second turbulence section 32, and enhances the mixing intensity of different layers of heat exchange medium in the heat exchange channel 11. In particular, it can improve the mixing effect between the heat exchange medium in the boundary layer and the heat exchange medium in other locations, so that the heat exchange plate has better heat exchange efficiency.

[0052] In one embodiment, please refer to Figure 5 The spiral wires 40 in the first turbulence section 31 and the spiral wires 40 in the second turbulence section 32 have different wire diameters. Specifically, the wire diameter of the spiral wire 40 refers to the diameter of the cross-section of the spiral wire 40. As an example, when the cross-section of the spiral wire 40 is circular, the wire diameter of the spiral wires 40 in the first turbulence section 31 and the second turbulence section 32 is the wire diameter. In practical applications, the diameter of the spiral wire 40 in the first turbulence section 31 can be larger than that in the second turbulence section 32. Furthermore, the spiral wire 40 at the connection between the first turbulence section 31 and the second turbulence section 32 transitions uniformly. By ensuring structural differences between the first turbulence section 31 and the second turbulence section 32 of the turbulence element 30, different flow states are generated when the heat exchange medium flows through the first turbulence section 31 and the second turbulence section 32. This enhances the intensity of mixing between different layers of heat exchange medium within the heat exchange channel 11. Simultaneously, it can reduce the flow resistance of the heat exchange medium at the connection between the first turbulence section 31 and the second turbulence section 32 due to the abrupt change in the diameter of the spiral wire 40. In other words, it can reduce the increased flow pressure resistance of the heat exchange medium caused by the turbulence element 30, reduce the flow pressure drop of the heat exchange medium within the heat exchange channel 11, and contribute to energy conservation.

[0053] In one embodiment, the end faces of the first turbulence section 31, formed by the spiral wire 40, and the second turbulence section 32, formed by the spiral wire 40, have different shapes. Specifically, when the spiral wire 40 is wound into a turbulence element 30, the end faces of the first turbulence section 31 and the second turbulence section 32 have different shapes when viewed from the end face of the turbulence element 30. That is, when the end face of the first turbulence section 31 is circular, the end face of the second turbulence section 32 can be a non-circular shape such as a triangle, rectangle, rhombus, or trapezoid, so that the structures of the first turbulence section 31 and the second turbulence section 32 are differentiated. This ensures that the heat exchange medium generates different flow states when flowing through the first turbulence section 31 and the second turbulence section 32, thereby increasing the intensity of mixing of different layers of heat exchange medium in the heat exchange channel 11. In particular, it can improve the mixing effect between the heat exchange medium in the boundary layer and the heat exchange medium in other locations, resulting in better heat exchange efficiency of the heat exchange plate.

[0054] In one embodiment, the end faces of the first turbulence section 31 and the second turbulence section 32, both formed by the spiral wire 40, have the same shape, but their wire diameters differ. Specifically, when the spiral wire 40 is wound into a turbulence element 30, the end faces of the first turbulence section 31 and the second turbulence section 32 appear to have the same shape when viewed from their end faces. That is, the end face shapes of the first turbulence section 31 and the second turbulence section 32 can simultaneously be circular, triangular, rectangular, rhomboid, trapezoidal, or other shapes. However, it is necessary that the end face shapes of the first turbulence section 31 and the second turbulence section 32 have different wire diameters. For example, when the end face of the baffle 30 is circular, the diameter of the circular end face of the first baffle section 31 and the diameter of the circular end face of the second baffle section 32 are different; as another example, when the end face of the baffle 30 is rectangular, the side length of the rectangle on the end face of the first baffle section 31 and the side length of the rectangle on the end face of the second baffle section 32 are different. This allows for structural differentiation between the first baffle section 31 and the second baffle section 32, ensuring different flow states of the heat exchange medium as it flows through them. This enhances the mixing intensity of different layers of heat exchange medium within the heat exchange channel 11, particularly improving the mixing effect between the heat exchange medium in the boundary layer and other locations, resulting in better heat exchange efficiency of the heat exchange plate.

[0055] It should be noted that when the end face of the turbulence-disrupting element 30 is rectangular, the first turbulence-disrupting section 31 and the second turbulence-disrupting section 32 can also be the long side and the short side of the rectangle. Since the side lengths of the rectangles are different, when the heat exchange medium flows along the turbulence-disrupting element 30, it will produce different flow states when it flows through the first turbulence-disrupting section 31 and the second turbulence-disrupting section 32. This can also increase the intensity of mixing of different layers of heat exchange medium in the heat exchange channel 11, especially the mixing effect between the heat exchange medium in the boundary layer and the heat exchange medium in other locations, so that the heat exchange plate has better heat exchange efficiency.

[0056] In one embodiment, please refer to Figure 6 and Figure 7 When the end face of the spoiler 30, which is formed by winding a spiral wire 40, is circular, the end faces of the first spoiler section 31 and the second spoiler section 32 have different diameters. A transition spoiler section 34 is provided between the first spoiler section 31 and the second spoiler section 32. The spoiler 30 consists of several first spoiler sections 31 and second spoiler sections 32 connected by the transition spoiler sections 34. Specifically, the diameter of the end face of the first spoiler section 31 is D1, and the diameter of the end face of the second spoiler section 32 is D2, satisfying: D1 > D2. The transition spring is roughly trumpet-shaped, and the two ends of the transition spoiler section 34 are respectively connected to the first spoiler section 31 and the second spoiler section 32. The first spoiler section 31, the transition spoiler section 34, and the second spoiler section 32 as a whole are roughly in the form of a tower spring. The spoiler 30 is configured to be composed of several interconnected sections that are roughly in the form of tower springs, so that the spoiler 30 includes at least the structurally differentiated first spoiler section 31 and second spoiler section 32. Section 32 not only ensures that the heat exchange medium will have different flow states when flowing through the first turbulence section 31 and the second turbulence section 32, but also when flowing through the transition turbulence section 34. This allows the turbulence member 30 to have more continuous and dense sections that can cause the heat exchange medium to have different degrees of turbulence, which can further enhance the intensity of mixing of different layers of heat exchange medium in the heat exchange channel 11, further improve the mixing effect between the heat exchange medium in the boundary layer and the heat exchange medium in other locations, and further improve the heat exchange efficiency of the heat exchange plate.

[0057] In one embodiment, please Figure 4 Further reference Figure 8 When the end face of the turbulence-disrupting element 30, which is formed by the spiral wire 40, is circular, the end face diameter D of the first turbulence-disrupting section 31 and the end face diameter of the second turbulence-disrupting section 32 are the same. The spiral wires 40 of the first turbulence-disrupting section 31 and the second turbulence-disrupting section 32 are wound with different pitches L, or the spiral wires 40 of the first turbulence-disrupting section 31 and the second turbulence-disrupting section 32 are wound with different helix angles α. Specifically, when the end face diameter D of the first turbulence section 31 and the end face diameter of the second turbulence section 32 are the same, when the spiral wires 40 of the first turbulence section 31 and the second turbulence section 32 are wound with different pitches L or helix angles α, the density of the number of turns of the first turbulence section 31 and the second turbulence section 32 wound with the spiral wires 40 can be different, so that the first turbulence section 31 and the second turbulence section 32 have different structures, ensuring that the heat exchange medium generates different flow states when flowing through the first turbulence section 31 and the second turbulence section 32, and increasing the intensity of mixing of different layers of heat exchange medium in the heat exchange channel 11.

[0058] It should be noted that in other embodiments, when the end face diameters D of the first turbulence section 31 and the second turbulence section 32 are different, the spiral wires 40 of the first turbulence section 31 and the second turbulence section 32 can be wound with different pitches L or helix angles α. This can also make the first turbulence section 31 and the second turbulence section 32 have different structures, and can also ensure that the heat exchange medium generates different flow states when flowing through the first turbulence section 31 and the second turbulence section 32, thereby achieving the purpose of increasing the intensity of mixing of different layers of heat exchange medium in the heat exchange channel 11.

[0059] In one embodiment, please Figure 2 Further reference Figures 9 to 11 When the end face of the baffle 30, which is formed by spiral wire 40, is rectangular, the lengths of the spiral wire 40 in the first baffle section 31 and the second baffle section 32 are different. The first baffle section 31 and the second baffle section 32 are interconnected. The baffle 30 is composed of several interconnected first baffle sections 31 and second baffle sections 32. Specifically, when viewed from the end face of the baffle 30, the baffle 30 is roughly rectangular. The first baffle section 31 is longer than the second baffle section 32. This causes the heat exchange medium to have different flow states when flowing through the first baffle section 31 and the second baffle section 32 after the baffle 30 is placed in the heat exchange channel 11. This increases the intensity of mixing of different layers of heat exchange medium in the heat exchange channel 11, making the temperature of the heat exchange medium at various positions in the heat exchange channel 11 more uniform, thereby improving the heat exchange efficiency of the heat exchange plate.

[0060] In one embodiment, please continue to refer to Figure 2 as well as Figures 9 to 11 The second turbulence section 32 includes a third segment 321 and a fourth segment 322. The third segment 321 and the fourth segment 322 are respectively connected to a first turbulence section 31. A first rounded transition section 33 is provided at the connection between the third segment 321 and the fourth segment 322 and the first turbulence section 31. Specifically, one end of the third segment 321 and one end of the fourth segment 322 are connected to each other, and the other ends of the third segment 321 and the fourth segment 322 are respectively connected to a first turbulence section 31, thereby realizing the interconnection between the first turbulence section 31 and the second turbulence section 32. At the same time, the first rounded transition section 33 is provided at the connection between the third segment 321 and the fourth segment 322 and the first turbulence section 31. This not only improves the strength of the turbulence component 30 at the connection between the first turbulence section 31 and the second turbulence component 30, but also prevents the corners of the turbulence component 30 from scratching the sidewall of the heat exchange channel 11, thus avoiding damage to the structure of the heat exchange channel 11.

[0061] In one embodiment, please refer to Figures 12 to 15The spiral wire 40 of the first turbulence section 31 includes a first segment 311 and a second segment 312. Both ends of the first segment 311 are provided with first connecting segments 313, and both ends of the second segment 312 are provided with second connecting segments 314. The first segment 311 is connected to the second segment 312 through the first connecting segments 313 and the second connecting segments 314. The spiral wire 40 of the second turbulence section 32 includes a third segment 321 and a fourth segment 322. Both ends of the third segment 321 are provided with third connecting segments 323, and both ends of the fourth segment 322 are provided with third connecting segments 323. A fourth connecting segment 324 is provided, and the third segment 321 is connected to the fourth segment 322 through the third connecting segment 323 and the fourth connecting segment 324; wherein, the end of the first segment 311 away from the second segment 312 is connected to the fourth connecting segment 324 of the adjacent fourth segment 322 away from the third segment 321 through the first connecting segment 313, and the end of the second segment 312 away from the first segment 311 is connected to the third connecting segment 323 of the adjacent third segment 321 away from the fourth segment 322 through the second connecting segment 314.

[0062] Specifically, the lengths of the first connecting segment 313, the second connecting segment 314, the third connecting segment 323, and the fourth connecting segment 324 are equal, so that the overall lengths of the first connecting segment 313 and the second connecting segment 314, the first connecting segment 313 and the fourth connecting segment 324, and the second connecting segment 314 and the third connecting segment 323 after being connected are equal. In this way, the width of the rectangle formed by the first spoiler segment 31 and the second spoiler segment 32 connected end to end can be kept equal when viewed from one side of the end face. At the same time, by setting the first segment 311, the second segment 312, the third segment 321, and the fourth segment 322 to different lengths, the spoiler 30 can be viewed from one side of the end face as two rectangles of different lengths arranged vertically. Therefore, when the heat exchange medium flows in the heat exchange channel 11, it can generate different flow states when passing through the first turbulence section 31 and the second turbulence section 32. Furthermore, it can also generate different flow states when passing through the first segment 311 and the second segment 312 in the first turbulence section 31, and the third segment 321 and the fourth segment 322 in the second turbulence section 32. This allows the heat exchange medium to generate different degrees of flow states when flowing through each part of the turbulence member 30, thereby continuously disrupting the heat exchange medium in the boundary layer of the heat exchange channel 11 and mixing it with the heat exchange medium in other locations. This increases the intensity of mixing of different layers of heat exchange medium in the heat exchange channel 11, making the temperature of the heat exchange medium in each location of the heat exchange channel 11 more uniform, and thus improving the heat exchange efficiency of the heat exchange plate.

[0063] In one embodiment, please continue to refer to Figure 2 as well as Figures 12 to 15The first segment 311 is provided with a second rounded transition section 3111 at both ends of the connection with the first connecting segment 313, and the second segment 312 is provided with a third rounded transition section 3121 at both ends of the connection with the second connecting segment 314; and / or, the third segment 321 is provided with a fourth rounded transition section 3211 at both ends of the connection with the third connecting segment 323, and the fourth segment 322 is provided with a fifth rounded transition section 3221 at both ends of the connection with the fourth connecting segment 324. Specifically, the second rounded corner transition section 3111, the third rounded corner transition section 3121, the fourth rounded corner transition section 3211, and the fifth rounded corner transition section 3221 can be of the same size and structure. By setting the baffles 30, which are two rectangles of different lengths when viewed from one side of the end face, and setting the corners of the first baffle section 31 and the second baffle section 32 within the baffles 30 as rounded corner transition sections, not only can the strength of the baffles 30 at the connection between the first baffle section 31 and the second baffles 30 be improved, but also the corners of the baffles 30 can be prevented from scratching the sidewall of the heat exchange channel 11, thus avoiding damage to the structure of the heat exchange channel 11.

[0064] In one embodiment, please refer to Figures 1 to 3 The first turbulence section 31 and / or the second turbulence section 32 are connected to at least one inner wall of the heat exchange channel 11. Specifically, the first turbulence section 31 and / or the second turbulence section 32 can contact the inner wall of the cavity of the heat exchange channel 11 by means of welding or other methods, thereby achieving contact between the turbulence component 30 and the inner wall of the cavity of the heat exchange channel 11. This not only enhances the mixing effect of the heat exchange medium in the heat exchange channel 11 and improves the heat exchange efficiency, but also increases the heat conduction area between the heat exchange medium and the heat exchange plate, further improving the overall heat conduction effect of the heat exchange plate and having better practicality.

[0065] It should be noted that since the main heat-conducting surface of the heat exchange plate is the second plate 20, which is close to the heat exchange channel 11 cavity of the battery, the heat transfer area is relatively fixed and cannot effectively increase the heat-conducting cross-sectional area. Therefore, in other embodiments, the turbulence member 30 is preferably fixedly connected to the second plate 20 of the heat exchange channel 11 cavity to enhance the heat conduction effect of the second plate 20, which helps the heat exchange between the heat exchange medium and the battery.

[0066] Accordingly, this application also provides a battery pack, including the heat exchange plate and a single battery cell as described in the above embodiments, wherein the single battery cell is thermally connected to the second plate 20 of the heat exchange plate. By adopting the heat exchange plate structure described in the above embodiments, the heat transfer efficiency of the heat exchange plate can be significantly improved at a lower cost, thereby meeting the cooling efficiency requirements of the single battery cell with high heat transfer capacity.

[0067] The heat exchange plate and battery pack provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A heat exchange plate, characterized in that, include: The first plate (10) has a first surface and a second surface arranged along the thickness direction, and the first surface of the first plate (10) is provided with a heat exchange channel (11); The second plate (20) is connected to the first surface of the first plate (10). The surface of the second plate (20) away from the first plate (10) has a first interface (21) and a second interface (22) that communicate with the heat exchange channel (11). The heat exchange medium can be input from one end of the heat exchange channel (11) through the first interface (21), and the heat exchange medium can be discharged from the other end of the heat exchange channel (11) through the second interface (22). A flow disruptor (30) is located within and extends along the heat exchange channel (11). The flow disruptor (30) is made of spiral wire (40) and includes a plurality of first flow disruptor sections (31) and second flow disruptor sections (32). The flow disruptor (30) is configured to have different flow states when the heat exchange medium flows through the first flow disruptor section (31) and the second flow disruptor section (32).

2. The heat exchange plate according to claim 1, characterized in that, The spiral wires (40) of the first turbulence section (31) and the spiral wires (40) of the second turbulence section (32) have different wire shapes.

3. The heat exchange plate according to claim 1, characterized in that, The spiral wires (40) of the first turbulence section (31) and the spiral wires (40) of the second turbulence section (32) have different wire diameters.

4. The heat exchange plate according to claim 1, characterized in that, The end face of the first turbulence section (31) formed by the spiral wire (40) and the end face of the second turbulence section (32) formed by the spiral wire (40) have different shapes.

5. The heat exchange plate according to claim 1, characterized in that, The end face of the first turbulence section (31) formed by the spiral wire (40) and the end face of the second turbulence section (32) formed by the spiral wire (40) have the same shape, but the end face diameters of the first turbulence section (31) and the second turbulence section (32) are different.

6. The heat exchange plate according to claim 5, characterized in that, When the end face of the turbulence-disrupting element (30) formed by the spiral wire (40) is circular, the end face diameters of the first turbulence-disrupting section (31) and the second turbulence-disrupting section (32) are different. A transition turbulence-disrupting section (34) is provided between the first turbulence-disrupting section (31) and the second turbulence-disrupting section (32). The turbulence-disrupting element (30) is composed of a plurality of first turbulence-disrupting sections (31) and second turbulence-disrupting sections (32) connected by the transition turbulence-disrupting section (34).

7. The heat exchange plate according to claim 5, characterized in that, When the end face of the turbulence-disrupting element (30) formed by the spiral wire (40) is circular, the end face diameters of the first turbulence-disrupting section (31) and the second turbulence-disrupting section (32) are the same, and the spiral wires (40) of the first turbulence-disrupting section (31) and the second turbulence-disrupting section (32) are wound with different pitches, or the spiral wires (40) of the first turbulence-disrupting section (31) and the second turbulence-disrupting section (32) are wound with different helix angles.

8. The heat exchange plate according to claim 5, characterized in that, When the end face of the baffle (30) formed by the spiral wire (40) is rectangular, the length of the spiral wire (40) of the first baffle section (31) is different from the length of the spiral wire (40) of the second baffle section (32). The first baffle section (31) and the second baffle section (32) are connected to each other. The baffle (30) is composed of a plurality of interconnected first baffle sections (31) and second baffle sections (32).

9. The heat exchange plate according to claim 8, characterized in that, The second spoiler section (32) includes a third segment (321) and a fourth segment (322). The third segment (321) and the fourth segment (322) are respectively connected to a first spoiler section (31). The third segment (321) and the fourth segment (322) are respectively provided with a first rounded transition section (33) at the connection between the third segment (321) and the first spoiler section (31).

10. The heat exchange plate according to claim 8, characterized in that, The spiral wire (40) of the first turbulence section (31) includes a first segment (311) and a second segment (312). The first segment (311) has a first connecting segment (313) at both ends, and the second segment (312) has a second connecting segment (314) at both ends. The first segment (311) is connected to the second segment (312) through the first connecting segment (313) and the second connecting segment (314). The spiral wire (40) of the second turbulence section (32) includes a third segment (321) and a fourth segment (322). The third segment (321) has a third connecting segment (323) at both ends, and the fourth segment (322) has a fourth connecting segment (324) at both ends. The third segment (321) is connected to the fourth segment (322) through the third connecting segment (323) and the fourth connecting segment (324). Wherein, the end of the first segment (311) away from the second segment (312) is connected to the fourth connecting segment (324) of the adjacent fourth segment (322) away from the third segment (321) via the first connecting segment (313), and the end of the second segment (312) away from the first segment (311) is connected to the third connecting segment (323) of the adjacent third segment (321) away from the fourth segment (322) via the second connecting segment (314).

11. The heat exchange plate according to claim 10, characterized in that, The first segment (311) is provided with a second rounded transition section (3111) at both ends of the connection with the first connecting segment (313), and the second segment (312) is provided with a third rounded transition section (3121) at both ends of the connection with the second connecting segment (314); and / or, The third segment (321) is provided with a fourth rounded transition section (3211) at both ends of the connection with the third connecting segment (323), and the fourth segment (322) is provided with a fifth rounded transition section (3221) at both ends of the connection with the fourth connecting segment (324).

12. The heat exchange plate according to claim 1, characterized in that, The first turbulence section (31) and / or the second turbulence section (32) are connected to at least one inner wall of the heat exchange channel (11).

13. A battery pack, characterized in that, Includes a heat exchange plate and a single cell as described in any one of claims 1 to 12, wherein the single cell is thermally connected to the second plate (20) of the heat exchange plate.

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