Liquid cooling plate and battery plug-in box

Abstract

The application discloses a liquid cooling plate and a battery plug-in box, and belongs to the technical field of batteries. The liquid cooling plate comprises a flow channel bottom plate, a sealing flat plate and a support frame. The first support structure of the first support beam abuts against the flow channel bottom plate, and the orthographic projection of the first support structure on the sealing flat plate and the orthographic projection of the flow channel groove on the sealing flat plate do not overlap. In this way, in the process of supporting the flow channel bottom plate, the part of the flow channel bottom plate with the flow channel groove will not abut against the support frame under pressure. Therefore, the fluid flow channel remains complete and is not deformed during the use of the liquid cooling plate, and the cooling function of the liquid cooling plate is ensured to be not affected. When the battery module is carried, the part of the flow channel bottom plate with the flow channel groove will not be deformed under pressure, that is, the cavity part of the flow channel plate will not be deformed under pressure.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a liquid cooling plate and a battery housing. Background Technology

[0002] In the field of battery technology, battery packs can be used in electric vehicles or energy storage systems. A battery pack may include a battery module and a liquid cooling plate, which is used to dissipate heat from the battery module.

[0003] Liquid cooling plates are typically placed at the bottom or side of the battery module. When the liquid cooling plate is placed at the bottom of the battery module, it is also necessary to consider supporting the battery module.

[0004] Currently, battery modules are becoming increasingly larger, and the liquid cooling plate's load-bearing capacity is insufficient. Under such conditions, the liquid cooling plate is at risk of deformation. Summary of the Invention

[0005] This application provides a liquid cooling plate and a battery housing. It addresses the problem of insufficient load-bearing capacity of existing liquid cooling plates for battery modules. The technical solution is as follows:

[0006] On the one hand, a liquid cooling plate is provided, including: a flow channel base plate, a sealing plate, and a support frame;

[0007] The flow channel bottom plate has multiple flow channel grooves;

[0008] The sealing plate is fixedly connected to one side of the flow channel bottom plate having the flow channel groove; the sealing plate and the plurality of flow channel grooves are used to form a fluid flow channel;

[0009] The support frame is connected to the side of the flow channel bottom plate away from the sealing plate; and the support frame includes: a frame body and a plurality of first support beams; the plurality of first support beams are arranged in a first direction and are all fixedly connected to the frame body; each first support beam has at least two first support structures on the side facing the flow channel bottom plate;

[0010] Wherein, there is a first gap between the first support beam and the bottom plate of the flow channel, the first support structure abuts against the bottom plate of the flow channel, and the orthographic projection of the first support structure on the sealing plate and the orthographic projection of the flow channel groove on the sealing plate do not overlap.

[0011] Optionally, the first support beam includes: a first support beam body and the at least two first support structures;

[0012] The first support beam body has at least two first openings, and the at least two first openings correspond one-to-one with the at least two first support structures. Each first support structure is fixedly connected to the first support beam body at the corresponding first opening, and the first support structure can also form a first cavity communicating with the first opening.

[0013] Optionally, the first support beam body and the at least two first support structures are integrally stamped structures.

[0014] Optionally, the support frame further includes: at least one second support beam;

[0015] The at least one second support beam is fixedly connected to the frame body, and one second support beam is distributed between two adjacent first support beams in the first direction; each second support beam has at least two second support structures on the side facing the flow channel bottom plate;

[0016] The second support beam has a second gap with the bottom plate of the flow channel, the second support structure is connected to the bottom plate of the flow channel, and the orthographic projection of the second support structure on the sealing plate does not overlap with the orthographic projection of the flow channel groove on the sealing plate.

[0017] Optionally, the liquid cooling plate further includes at least two first connectors, and the second support structure is connected to the flow channel bottom plate through the first connectors.

[0018] Optionally, the second support beam includes: a second support beam body and the at least two second support structures;

[0019] The second support beam body has at least two second openings, each of which corresponds to one of the at least two second support structures. Each second support structure is fixedly connected to the second support beam body at the corresponding second opening, and the second support structure can also form a second cavity that communicates with the second opening.

[0020] Optionally, the second support beam body and the at least two second support structures are integrally stamped structures.

[0021] Optionally, the support frame further includes a third support beam, the extension direction of which is parallel to the first direction;

[0022] The third support beam is fixedly connected to the side of the plurality of first support beams facing the flow channel bottom plate, and is also fixedly connected to the side of the at least one second support beam facing the flow channel bottom plate. The side of the third support beam facing the flow channel bottom plate has a third support structure. The third support structure is connected to the flow channel bottom plate, and the orthographic projection of the third support structure on the sealing plate does not overlap with the orthographic projection of the flow channel groove on the sealing plate.

[0023] Optionally, the liquid cooling plate further includes: at least one second connector, the second connector being connected to the second support beam;

[0024] The portion of the third support beam that intersects with the second support beam has a clearance hole, and the second connector passes through the clearance hole and connects to the flow channel bottom plate.

[0025] Optionally, the liquid cooling plate has: two liquid inlet flow channels and one liquid outlet flow channel arranged along the second direction; the two liquid inlet flow channels are located on the same side of the liquid outlet flow channel.

[0026] The fluid flow channel includes: a plurality of first main flow channels distributed in each of the liquid inlet flow channel areas, and a plurality of first branch flow channels for connecting the plurality of first main flow channels;

[0027] The fluid flow channel further includes: a plurality of second main flow channels distributed within the liquid outlet flow channel area, and a plurality of second branch flow channels for connecting the plurality of second main flow channels;

[0028] The overall extension directions of the first and second main channels are both parallel to the first direction, and the first direction intersects the second direction.

[0029] Optionally, the liquid cooling plate further comprises: a flow-diverting area located on the same side of the two liquid inlet flow channels in the first direction;

[0030] The fluid flow channel further includes: a flow channel network distributed within the flow distribution zone, the flow channel network being connected to at least one first main flow channel within each of the inlet flow channel zones.

[0031] Optionally, the flow channel network is used to divide the flow distribution area into at least two sub-zones; the portion of the flow channel bottom plate located within the sub-zone has at least one reinforcing rib, the reinforcing rib having an auxiliary slot, the auxiliary slot being separately disposed from the flow channel groove.

[0032] Optionally, the liquid cooling plate further comprises: an isolation zone, which is located between the diversion zone and the liquid outlet channel zone in the second direction; and in the first direction, the distance between the isolation zone and the liquid inlet channel zone is greater than or equal to the distance between the diversion zone and the liquid inlet channel zone;

[0033] The portion of the flow channel bottom plate distributed in the isolation area abuts against the sealing plate.

[0034] Optionally, the flow channel base plate also has multiple turbulence protrusions distributed within the liquid outlet flow channel area; the multiple second main flow channels and multiple second branch flow channels surround the multiple turbulence protrusions.

[0035] The side of the turbulence protrusion facing the sealing plate abuts against the side of the sealing plate facing the flow channel bottom plate.

[0036] Optionally, the plurality of turbulence convex hulls are divided into: multiple groups of turbulence convex hulls distributed along the first direction, each group of turbulence convex hulls including at least two turbulence convex hulls arranged along the second direction;

[0037] Specifically, for two adjacent sets of turbulence convex hulls, at least two turbulence convex hulls in one set are staggered with at least two turbulence convex hulls in the other set in the second direction.

[0038] Optionally, for two adjacent sets of turbulence convex hulls, the number of turbulence convex hulls in one set is greater than the number of turbulence convex hulls in the other set.

[0039] Among them, for a group of a relatively large number of turbulence bulges, the width of each turbulence bulge in the second direction is equal;

[0040] For a small number of the aforementioned turbulence convex hulls, at least two of the turbulence convex hulls have unequal widths in the second direction.

[0041] Optionally, the flow channel base plate includes: a base plate body and flow channel components;

[0042] The base plate body has a flow channel opening corresponding to the flow channel component; the flow channel component is located on the side of the base plate body away from the sealing plate, the flow channel component is fixedly connected to the base plate body at the flow channel opening, and the flow channel component has a flow channel groove communicating with the flow channel opening; the base plate body abuts against the sealing plate.

[0043] The base plate body and the flow channel component are integrally stamped structures.

[0044] Optionally, the liquid cooling plate further includes: a plurality of insulation plates, the plurality of insulation plates abutting against the side of the flow channel bottom plate away from the sealing plate, and in the first direction, one of the insulation plates is distributed between two adjacent first support beams.

[0045] On the other hand, a battery box is provided, comprising: a battery module, and a liquid cooling plate abutting against the battery module, wherein the liquid cooling plate is any of the liquid cooling plates described above.

[0046] The beneficial effects of the technical solutions provided in this application are:

[0047] The first support structure of the first support beam abuts against the bottom plate of the flow channel, and the orthographic projection of the first support structure on the sealing plate does not overlap with the orthographic projection of the flow channel groove on the sealing plate. Thus, during the support of the bottom plate, the portion of the bottom plate with the flow channel groove will not be pressurized against the support frame. Therefore, the fluid flow channel remains intact and undeformed during the use of the liquid cooling plate, ensuring that the cooling function of the liquid cooling plate is not affected. When supporting the battery module, the portion of the bottom plate with the flow channel groove will not be deformed under pressure, meaning the hollow portion of the flow channel plate will not be deformed under pressure. Attached Figure Description

[0048] 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.

[0049] Figure 1 This is a schematic diagram of the structure of the liquid cooling plate provided in an embodiment of this application;

[0050] Figure 2 for Figure 1 An exploded view of the liquid cooling plate is shown.

[0051] Figure 3 This is a schematic diagram of the structure of the sealing plate provided in the embodiments of this application;

[0052] Figure 4 This is a schematic diagram of the structure of the flow channel base plate provided in the embodiments of this application;

[0053] Figure 5 This is a schematic diagram of the structure of the flow channel base plate and the flow channel groove provided in the embodiments of this application;

[0054] Figure 6 A schematic diagram of the support frame provided in the embodiments of this application;

[0055] Figure 7This is a structural schematic diagram of the first support beam provided in an embodiment of this application;

[0056] Figure 8 Another structural schematic diagram of the first support beam provided in the embodiments of this application;

[0057] Figure 9 This is a structural schematic diagram of the second support beam provided in an embodiment of this application;

[0058] Figure 10 Another structural schematic diagram of the second support beam provided in the embodiments of this application;

[0059] Figure 11 for Figure 6 A magnified view of a portion of region B in the middle;

[0060] Figure 12 This is a schematic diagram of the partitioning of the flow channel base plate provided in an embodiment of this application;

[0061] Figure 13 This is a schematic diagram of the flow channel base plate in the flow distribution zone provided in an embodiment of this application;

[0062] Figure 14 Another partitioning diagram of the flow channel base plate provided in the embodiments of this application;

[0063] Figure 15 for Figure 5 A magnified view of a portion of region A in the middle;

[0064] Figure 16 for Figure 12 A magnified view of a portion of region C in the middle;

[0065] Figure 17 for Figure 4 Side view of region D in the image;

[0066] Figure 18 for Figure 4 A magnified view of region D in the image. Detailed Implementation

[0067] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0068] Currently, lithium-ion battery energy storage systems in the industry typically use liquid cooling plates inside the battery compartment to dissipate heat from the battery modules. Currently, the liquid cooling plate manufacturing process is mostly aluminum extrusion. Aluminum extruded liquid cooling plates have the following disadvantages: 1. Inhomogeneous product microstructure and properties; 2. Harsh working conditions and high wear and tear on the extrusion dies; 3. Low production efficiency; 4. Potential corrosion risk; 5. Complex manufacturing process; 6. Relatively heavy weight; 7. Limited design flexibility.

[0069] Currently, many lithium-ion battery storage systems in the industry use die-casting liquid cooling plates for their battery boxes. Die-cast liquid cooling plates have the following disadvantages: 1. High mold costs; 2. Low heat exchange capacity; 3. Prone to defects; 4. Large weight; 5. Limited design flexibility.

[0070] The liquid cooling plate has internal fluid channels for heat exchange by introducing a cooling medium. Currently, as battery modules become increasingly heavy, the liquid cooling plate must also consider its load-bearing capacity to prevent excessive pressure that could deform the internal fluid channels and affect cooling performance.

[0071] Therefore, the design of liquid cooling plates needs to consider not only heat exchange in the flow channels, but also the load-bearing capacity of the battery module.

[0072] This application provides a liquid cooling plate; please refer to... Figures 1 to 6 , Figure 1 This is a schematic diagram of the structure of the liquid cooling plate provided in an embodiment of this application. Figure 2 for Figure 1 The exploded view of the liquid cooling plate is shown. Figure 3 This is a schematic diagram of the structure of the sealing plate provided in the embodiments of this application. Figure 4 This is a schematic diagram of the structure of the flow channel base plate provided in an embodiment of this application. Figure 5 This is a schematic diagram of the structure of the flow channel base plate and the flow channel groove provided in the embodiments of this application. Figure 6 This is a schematic diagram of the support frame provided in an embodiment of this application. The liquid cooling plate 000 may include: a flow channel base plate 002, a sealing plate 001, and a support frame 003.

[0073] The flow channel base plate 002 has multiple flow channel grooves 104. The multiple flow channel grooves 104 can be interconnected.

[0074] The sealing plate 001 is fixedly connected to the side of the flow channel base plate 002 with the flow channel groove 104, and the side of the sealing plate 001 facing the flow channel base plate 002 abuts against the part of the flow channel base plate 002 other than the flow channel groove 104; the sealing plate 001 and the multiple flow channel grooves 104 are used to form a fluid flow channel.

[0075] like Figure 4 and Figure 5 As shown, for ease of observation, in Figure 5 The flow channel groove 104 is shown in shaded form. The fluid flow channel formed by the sealing plate 001 and the plurality of flow channel grooves 104 can also be referred to. Figure 5 The shape of the channel groove 104. In this embodiment, the entire structure after the sealing plate 001 and the channel bottom plate 002 are fixedly connected can also be defined as a channel plate.

[0076] Please refer to Figure 2 and Figure 6 The support frame 003 is connected to the side of the flow channel bottom plate 002 away from the sealing plate 001; and the support frame 003 may include: a frame body and a plurality of first support beams 201; the plurality of first support beams 201 are arranged in the first direction X and are all fixedly connected to the frame body; each first support beam 201 has at least two first support structures 301 on the side facing the flow channel bottom plate 002.

[0077] The first support beam 201 has a first gap with the flow channel bottom plate 002, and the first support structure 301 abuts against the flow channel bottom plate 002. The orthographic projection of the first support structure 301 onto the sealing plate 001 does not overlap with the orthographic projection of the flow channel groove 104 onto the sealing plate 001. In other words, the first support structure 301 abuts against the portion of the flow channel bottom plate 002 except for the flow channel groove 104. Thus, all other parts of the first support beam 201 except for the first support structure 301 do not contact the flow channel bottom plate 002.

[0078] In this embodiment, the sealing plate 001 abuts against the portion of the flow channel base plate 002 excluding the flow channel groove 104, and the first support structure 301 of the first support beam 201 abuts against the portion of the flow channel base plate 002 excluding the flow channel groove 104. Thus, when the support frame 003 supports the flow channel plate (specifically the flow channel base plate 002), it supports the portion of the flow channel base plate 002 excluding the flow channel groove 104, that is, it supports the solid portion of the flow channel plate. Therefore, the portion of the flow channel base plate 002 with the flow channel groove 104 will not contact the support frame 003, and when carrying the battery module, the portion of the flow channel base plate 002 with the flow channel groove 104 will not be deformed by pressure, meaning the hollow portion of the flow channel plate will not be deformed by pressure.

[0079] In summary, the liquid cooling plate 000 provided in this embodiment of the application has its support frame 003 abutting against the portion of the flow channel bottom plate 002, excluding the flow channel groove 104, via the first support structure 301 of the first support beam 201. Thus, during the support of the flow channel bottom plate 002, the portion of the flow channel bottom plate 002 with the flow channel groove 104 will not be pressurized against the support frame 003. Therefore, the fluid flow channel remains intact and undeformed during the use of the liquid cooling plate 000, ensuring that the cooling function of the liquid cooling plate 000 is not affected.

[0080] It should be noted that the support frame 003 is connected to the side of the flow channel base plate 002 away from the sealing plate 001, and the two can be detachably connected. For example, after the flow channel base plate 002 is fixedly connected to the sealing plate 001, a flow channel plate is formed, and the support frame 003 is detachably connected to the flow channel plate.

[0081] In this embodiment, the support frame 003 is detachably connected to the side of the flow channel base plate 002 away from the sealing plate 001. This avoids deformation of the flow channel base plate 002 caused by fixing the support frame 003 and the flow channel base plate 002 together by welding or other methods, which would affect the connection between the flow channel base plate 002 and the sealing plate 001, thus ensuring the airtightness of the fluid flow channel.

[0082] Please refer to Figure 1 and Figure 2 The liquid cooling plate 000 may further include a liquid inlet component 000a and a liquid outlet component 000b, which are used for connection to a cooling medium supply system. Please refer to... Figures 3 to 5 The sealing plate 001 may have an inlet 101a and an outlet 101b, and the corresponding positions of the flow channel groove 104 of the flow channel base plate 002 may serve as the inlet port 106a and the outlet port 106b. After the flow channel base plate 002 and the sealing plate 001 are fixedly connected, the inlet port 101a and the outlet port 101b of the sealing plate 001 serve as the inlet and outlet of the fluid flow channel.

[0083] The structure of support frame 003 will be described in detail below.

[0084] For some possible implementation methods, please refer to Figure 6 The frame body may include a front bottom crossbeam 003a, a rear bottom crossbeam 003b, and two side beams 003c, which together form a square frame body. The front bottom crossbeam 003a and the side beams 003c, as well as the rear bottom crossbeam 003b and the side beams 003c, can be fixedly connected by resistance welding. Of course, the frame body can also be implemented in other ways, and this application embodiment is not limited to these methods.

[0085] For some possible implementation methods, please refer to Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of the first support beam provided in an embodiment of this application. Figure 8 This is another structural schematic diagram of the first support beam provided in the embodiments of this application. The first support beam 201 may include: a first support beam body 201a and at least two first support structures 301.

[0086] The first support beam body 201a has at least two first openings 201b, and the at least two first openings 201b correspond one-to-one with at least two first support structures 301. Each first support structure 301 is fixedly connected to the first support beam body 201a at the corresponding first opening 201b, and the first support structure 301 can also form a first cavity 201c that communicates with the first opening 201b.

[0087] For example, the first support beam body 201a and at least two first support structures 301 can be integrally stamped structures.

[0088] In this embodiment, the first support beam 201 can be formed by stamping, so that the first support beam body 201a and the first support structure 301 can be integrally formed. That is, the first support structure 301 is a stamped protrusion relative to the first support beam body 201a, and the side of the stamped protrusion facing away from the flow channel bottom plate 002 is the first cavity 201c; the stamped protrusion can adapt to the shape between the flow channel grooves 104 and support the part of the flow channel bottom plate 002 other than the flow channel grooves 104.

[0089] Because the fluid flow channel of the flow channel plate is a hollow structure with a thin wall, the internal structure lacks strong support. The internal space of the hollow structure is large, lacking sufficient internal support. The portion of the first support beam 201, excluding the first support structure 301, cannot directly contact and support the hollow structure of the flow channel plate. When the liquid cooling plate 000 supports the battery module, the hollow structure of the flow channel plate is subjected to stress, leading to structural deformation and collapse. This collapse of the fluid flow channel obstructs the flow path of the cooling medium (such as coolant), increasing the overall flow resistance of the liquid cooling plate 000 and affecting its performance. Therefore, by setting the first support structure 301, direct contact with the hollow structure of the fluid flow channel is avoided, preventing stress-induced structural deformation and collapse. These first support structures 301 are located on the ineffective surface of the flow channel bottom plate 002. This part has no hollow flow channel structure and is a solid structure. This part can be used as a load-bearing component to support the frame 003 in supporting the flow channel plate, without directly contacting the hollow structure of the flow channel plate and causing hard contact deformation.

[0090] Furthermore, the first support beam 201 can be fixedly connected to the side beams 003c of the frame body on both sides in the second direction Y by resistance welding. Resistance welding offers high weld quality; the weld nugget is always surrounded by a plastic ring during formation, isolating the molten metal from the air. The metallurgical process is simple, and the chemical composition of the weld metal is uniform and essentially consistent with the base material. The welding heat is concentrated, the heated area is small, and the heat-affected zone is small, resulting in minimal and easily controllable welding deformation. Moreover, resistance welding eliminates the need for filler metals such as welding wire and electrodes, as well as welding materials such as oxygen, acetylene, and hydrogen, saving on welding material costs. Because the welding process is relatively simple and does not require complex post-processing steps, the overall welding cost can be reduced.

[0091] For some possible implementation methods, please refer to Figure 7 The first support beam body 201a may also have a plurality of first reinforcing ribs 302 extending along the second direction Y and arranged along the first direction X. There is a gap between the first reinforcing ribs 302 and the flow channel bottom plate 002, that is, the first reinforcing ribs 302 do not contact the flow channel bottom plate 002. The first direction X and the second direction Y may be perpendicular.

[0092] For example, the number of first support structures 301 can be at least three, such as Figure 7 Four, at least three of the first support structures 301 are arranged in two rows along the first direction X, and multiple first reinforcing ribs 302 are located between the two rows of first support structures 301.

[0093] The first reinforcing rib 302 and at least two first supporting structures 301 can be integrally stamped structures.

[0094] By employing sheet metal stamping technology, straight, protruding reinforcing ribs (i.e., first reinforcing ribs 302) are stamped in the first direction X, which increases the material's moment of inertia. The shape of the first reinforcing rib 302 adds extra material distribution to the structure, increasing the moment of inertia of the structural cross-section. Moment of inertia is an important parameter measuring an object's resistance to bending and torsion; the larger the moment of inertia, the stronger the structure's resistance to bending and torsion. When a structure is subjected to external forces, stress tends to concentrate in certain local areas. The presence of the first reinforcing rib 302 can disperse these concentrated stresses to a larger area, reducing local stress peaks and thus improving the overall load-bearing capacity of the structure. The first reinforcing rib 302 can increase the structure's stiffness, making it less prone to deformation and instability under external forces. Adding the first reinforcing rib 302 can significantly improve its stability, preventing excessive deformation or bending during use. The first reinforcing rib 302 itself has a certain strength and stiffness; it can directly bear a portion of the external force, reducing the load on the main structure, distributing some of the pressure, and enhancing overall strength.

[0095] For some possible implementation methods, please refer to Figure 6 and Figure 9 , Figure 9 The second support beam provided in the embodiment of this application is a structural schematic diagram. The support frame 003 may further include at least one second support beam 202.

[0096] At least one second support beam 202 is fixedly connected to the frame body, and the second support beam 202 is distributed between two adjacent first support beams 201 in the first direction X; each second support beam 202 has at least two second support structures 401 on the side facing the flow channel bottom plate 002.

[0097] The second support beam 202 has a second gap with the flow channel bottom plate 002, and the second support structure 401 is connected to the flow channel bottom plate 002. The orthographic projection of the second support structure 401 on the sealing plate 001 does not overlap with the orthographic projection of the flow channel groove 104 on the sealing plate 001. For example, the second support structure 401 and the flow channel bottom plate 002 can be connected by welding, snap-fitting, riveting, threaded connection, etc.

[0098] For example, the liquid cooling plate 000 may further include: at least two first connectors 501, and the second support structure 401 is connected to the flow channel base plate 002 through the first connectors 501. That is, the second support structure 401 is connected to the part of the flow channel base plate 002 other than the flow channel groove 104 through the first connectors 501.

[0099] The second support beam 202 can have a similar effect to the first support beam 201, that is, to support the part of the flow channel bottom plate 002 except for the flow channel groove 104. The second support structure 401 of the second support beam 202 can also be provided with a fifth connecting hole 401a. The second support beam 202 can be detachably connected to the flow channel bottom plate 002 by passing through the fifth connecting hole 401a and the third connecting hole 107 of the flow channel bottom plate 002 through the first connecting member 501. In this way, the flow channel bottom plate 002 can be connected to the second support beam 202 in addition to being connected to the frame body. The first connecting member 501 can also pass through the first connecting hole 102 of the sealing plate 001.

[0100] Furthermore, the second support beam 202 can be located at the middle position of the support frame 003 in the first direction X. The support frame 003 is crucial to the load-bearing capacity of the middle part of the flow channel plate. In applications such as battery packs, components such as battery cells are usually placed on top of the liquid cooling plate 000. As the number of battery cells or the weight of the battery cells increases, the compressive stress in the middle part is the greatest. The liquid cooling plate 000 needs to have sufficient load-bearing capacity to prevent deformation or damage due to insufficient weight, which would affect the normal operation and service life of the battery pack. In actual use, the liquid cooling plate 000 may be subjected to pressure from various directions, such as the fastening force during installation and the squeezing force from other components inside the battery pack. If the load-bearing capacity of the middle part is insufficient, it is easy to deform under these pressures. Once the flow channel plate is deformed, it may cause poor coolant flow, affecting heat dissipation, and may even damage the liquid cooling plate 000 itself, posing a safety hazard. In some complex working environments, the liquid cooling plate 000 may be subjected to uneven stress distribution. Strengthening the load-bearing design can better distribute these stresses in the middle part, avoiding stress concentration at a certain point or in a certain area, thereby reducing the risk of damage to the flow channel plate due to excessive local stress.

[0101] For some possible implementation methods, please refer to Figure 9 and Figure 10 , Figure 10 This is another structural schematic diagram of the second support beam provided in the embodiments of this application. The second support beam 202 may include: a second support beam body 202a and at least two second support structures 401.

[0102] The second support beam body 202a has at least two second openings 202b, and the at least two second openings 202b correspond one-to-one with at least two second support structures 401. Each second support structure 401 is fixedly connected to the second support beam body 202a at the corresponding second opening 202b, and the second support structure 401 can also form a second cavity 202c that communicates with the second opening 202b.

[0103] The second support beam body 202a and at least two second support structures 401 are integrally stamped structures.

[0104] In this embodiment, the second support beam 202 can be formed by stamping, so that the second support beam body 202a and the second support structure 401 can be integrally formed. That is, the second support structure 401 is a stamped protrusion relative to the second support beam body 202a, and the side of the stamped protrusion facing away from the flow channel bottom plate 002 is the second cavity 202c; the stamped protrusion can adapt to the shape between the flow channel grooves 104 and support the part of the flow channel bottom plate 002 other than the flow channel grooves 104.

[0105] For some possible implementation methods, please refer to Figure 9 The second support beam body 202a may also have a plurality of second reinforcing ribs 403 extending along the second direction Y. There is a gap between the second reinforcing ribs 403 and the flow channel bottom plate 002, that is, the second reinforcing ribs 403 and the flow channel bottom plate 002 do not contact each other.

[0106] For example, such as Figure 9 As shown, the second reinforcing rib 403 can be divided into multiple groups, and each group of second reinforcing ribs 403 has at least two second reinforcing ribs 403 arranged along the first direction X; wherein, a second support structure 401 may have a group of second reinforcing ribs 403 distributed on both sides of the second direction Y.

[0107] For example, the second support beam body 202a may also have a plurality of third reinforcing ribs 404 extending along the second direction Y, and the third reinforcing ribs 404 may be distributed on both sides of the plurality of second reinforcing ribs 403 in the first direction X. The second support beam body 202a, the second reinforcing ribs 403, and the third reinforcing ribs 404 are integrally stamped structures.

[0108] This embodiment of the application enhances the load-bearing capacity of the second support beam 202 by incorporating a second reinforcing rib 403 and a third reinforcing rib 404. Multiple straight, protruding reinforcing ribs (including the second reinforcing rib 403 and the third reinforcing rib 404) are stamped out of the middle position of the second support beam 202 in the second direction Y, increasing the moment of inertia of the material. The shapes of the second reinforcing ribs 403 and the third reinforcing rib 404 add extra material distribution to the structure, which increases the moment of inertia of the structural cross-section. When the structure is subjected to external forces, stress tends to concentrate in certain local areas. The presence of the second reinforcing ribs 403 and the third reinforcing rib 404 can disperse these concentrated stresses to a larger area, reducing local stress peaks and thus improving the overall load-bearing capacity of the structure. The second reinforcing ribs 403 and the third reinforcing rib 404 can increase the stiffness of the structure, making it less prone to deformation and instability under external forces. Adding the second reinforcing ribs 403 and the third reinforcing rib 404 can significantly improve its stability and prevent excessive deformation or bending during use. The second reinforcing rib 403 and the third reinforcing rib 404 have certain strength and rigidity. They can directly bear part of the external force, reduce the load on the main structure, share some of the pressure, and enhance the overall strength.

[0109] Therefore, the second support beam 202 can effectively disperse stress from all directions, prevent stress concentration, improve the battery pack's resistance to bottom impact, and also increase the structural strength and load-bearing capacity of the liquid cooling plate 000.

[0110] For some possible implementation methods, please refer to Figure 6 and Figure 11 , Figure 11 for Figure 6 A magnified view of region B in the diagram. The support frame 003 may further include a third support beam 203, the extension direction of which is parallel to the first direction X. For example, if the second support beam 202 extends parallel to the second direction Y and can be called a crossbeam, then the third support beam 203 can be called a longitudinal beam.

[0111] The third support beam 203 is fixedly connected to the side of the plurality of first support beams 201 facing the flow channel bottom plate 002, and is also fixedly connected to at least one second support beam 202 facing the flow channel bottom plate 002. The side of the third support beam 203 facing the flow channel bottom plate 002 has a third support structure 405. The third support structure 405 is connected to the flow channel bottom plate 002, and the orthographic projection of the third support structure 405 on the sealing plate 001 does not overlap with the orthographic projection of the flow channel groove 104 on the sealing plate 001. That is, the third support structure 405 abuts against the portion of the flow channel bottom plate 002 other than the flow channel groove 104. The third support structure 405 can be a strip-shaped support boss, and the extension direction of the strip-shaped support boss is parallel to the first direction X.

[0112] For example, please refer to Figure 11 The liquid cooling plate 000 may further include: at least one second connector 502, which is connected to the second support beam 202. The portion of the third support beam 203 that intersects with the second support beam 202 has a clearance hole 406, through which the second connector 502 passes and connects to the flow channel bottom plate 002.

[0113] like Figure 11 As shown, the portion where the third support beam 203 intersects with the second support beam 202 may have a clearance hole 406. The second connector 502 can pass through the sixth connection hole 402a of the second support beam 202 and then through the clearance hole 406, followed by the fourth connection hole 108 of the flow channel bottom plate 002 and the second connection hole 103 of the sealing plate 001, thereby connecting the flow channel bottom plate 002 and the sealing plate 001 with the second support beam 202.

[0114] For example, the second support beam 202 may also have a fourth support structure 402, which may have a sixth connecting hole 402a. The side of the fourth support structure 402 facing the flow channel bottom plate 002 is fixedly connected to the side of the third support beam 203 away from the flow channel bottom plate 002, for example, by welding. In this way, the third support structure 405 and the second support structure 401 can simultaneously abut against the flow channel bottom plate 002, providing a better support effect.

[0115] The flow channel base plate 002 and the sealing plate 001 of the flow channel plate are described in detail below.

[0116] For some possible implementation methods, please refer to Figure 5 , Figures 12 to 18 , Figure 12 This is a schematic diagram of the partitioning of the flow channel base plate provided in an embodiment of this application. Figure 13 This is a schematic diagram of the flow channel base plate in the flow distribution zone provided in an embodiment of this application. Figure 14 This is another schematic diagram of the partitioning of the flow channel base plate provided in an embodiment of this application. Figure 15 for Figure 5 A magnified view of a portion of region A in the middle. Figure 16 for Figure 12 A magnified view of a portion of region C. Figure 17 for Figure 4 Side view of region D in the image. Figure 18 for Figure 4 The enlarged view of region D in the figure. The liquid cooling plate 000 has two liquid inlet flow channels 010a and one liquid outlet flow channel 010b arranged along the second direction Y; the two liquid inlet flow channels 010a are located on the same side of the liquid outlet flow channel 010b.

[0117] The fluid flow channel may include: a plurality of first main flow channels 104a distributed in each inlet flow channel area 010a, and a plurality of first branch flow channels 104b for connecting the plurality of first main flow channels 104a.

[0118] The fluid flow channel may further include: a plurality of second main flow channels 104c distributed within the liquid outlet flow channel region 010b, and a plurality of second branch flow channels 104d for connecting the plurality of second main flow channels 104c.

[0119] Among them, the overall extension directions of the first main channel 104a and the second main channel 104c are both parallel to the first direction X, and the first direction X intersects with the second direction Y.

[0120] In this embodiment, the distance between two adjacent first main channels 104a in the second direction Y is less than the sum of the widths of these two adjacent first main channels 104a in the second direction Y. That is, the spacing between the multiple first main channels 104a is narrow, so that more first main channels 104a can be provided in the liquid inlet channel region 010a.

[0121] In some possible implementations, the area of ​​the channel groove 104 projected onto the sealing plate 001 is larger than the area of ​​the portion of the channel base plate 002 other than the channel groove 104 projected onto the sealing plate 001; the area of ​​the channel groove 104 in the two inlet channel areas 010a projected onto the sealing plate is larger than the area of ​​the channel groove 104 in the outlet channel area 010b projected onto the sealing plate 001.

[0122] In this way, within the liquid inlet flow channel area 010a, the spacing between the flow channels is small, and more circulation loops are set up, making the battery heat up or cool down more evenly and reducing the temperature difference. The contact area between the cooling medium and the flow channel plate is larger, which can provide higher heat dissipation efficiency.

[0123] For example, please refer to Figure 5 and Figure 15 The multiple first main flow channels 104a distributed within each inlet flow channel region 010a can be divided into multiple groups of first main flow channels 104a. Each group of first main flow channels 104a may include two first main flow channels 104a, which are arranged in parallel. The cooling medium flows in opposite directions in two adjacent groups of first main flow channels 104a. Figure 15 The two sets of first main flow channels 104a shown are indicated by arrows indicating the direction of cooling medium flow. This design, with parallel dual-circulation loops at smaller intervals, reduces coolant flow resistance, optimizes the coolant flow path, and increases cooling efficiency. This ensures the battery maintains a uniform temperature during charging and discharging, significantly reduces temperature differences between battery cells, and optimizes heat dissipation performance.

[0124] For example, such as Figure 4 and Figure 5 As shown, the inlet and outlet of the liquid cooling plate 000 are located on the same side to ensure that the battery module is both hot and cold at the same time, thus reducing the surface temperature difference of the flow channel plate.

[0125] For some possible implementation methods, please refer to Figure 12 , Figure 13 The liquid cooling plate 000 also has a diversion area 010c located on the same side of the two liquid inlet flow channel areas 010a in the first direction X.

[0126] The fluid flow channel may further include: a flow channel network 109 distributed within the flow channel region 010c, the flow channel network 109 being connected to at least one first main flow channel 104a within each inlet flow channel region 010a.

[0127] For example, the diversion channel network 109 may include: multiple diversion main channels 109a, and multiple diversion branch channels 109b for connecting the multiple diversion main channels; the multiple diversion main channels 109a correspond to multiple first main channels 104a.

[0128] Among them, the overall extension direction of the main diversion channel 109a is parallel to the first direction X. One end of the multiple main diversion channels 109a is connected in parallel and is connected to the liquid inlet component 000a of the liquid cooling plate 000. The other end of the multiple main diversion channels 109a is connected to the corresponding first main channel 104a.

[0129] like Figure 13As shown, for ease of description, different lines and arrows are used to indicate the main flow channel 109a, branch flow channel 109b, and first main flow channel 104a, as well as the direction of cooling medium flow within the channels. Multiple main flow channels 109a are arranged in parallel. There can be three main flow channels 109a, and two first main flow channels 104a connected to the branch flow zone 010c within one inlet flow channel zone 010a. These two first main flow channels 104a are also arranged in parallel.

[0130] In this way, the fluid flowing in from the inlet component 000a flows through the diversion channel network 109 and then flows to the two inlet channel regions 010a. This reduces the flow resistance between the inlet component 000a and the inlet channel region 010a, increases the inlet flow velocity of the coolant in the fluid channels, and thus ensures the cooling effect. Furthermore, the multiple first main channels 104a between each inlet channel region 010a can be arranged in parallel, which further reduces the flow resistance within the channels of the inlet channel region 010a and increases the flow velocity of the coolant in the inlet channel region 010a.

[0131] Among some possible implementation methods, such as Figure 13 As shown, the flow channel network 109 is used to divide the flow distribution area 010c into at least two sub-zones; the portion of the flow channel base plate 002 located within the sub-zone has at least one reinforcing rib 110, the reinforcing rib 110 has an auxiliary slot, the auxiliary slot is separately provided from the flow channel groove 104, that is, the auxiliary slot and the flow channel groove 104 are not connected. For example, the auxiliary slot and the flow channel groove 104 can be integrally stamped.

[0132] For example, two adjacent main diversion channels 109a and two branch diversion channels 109b can form a sub-zone, and the reinforcing ribs 110 in each sub-zone can improve the strength of the channel bottom plate 002 in this zone.

[0133] For example, when the flow channel base plate 002 and the sealing plate 001 are connected by brazing, the flow channel base plate 002 may be provided with a plurality of vent holes 111 in the area other than the flow channel groove 104. The vent holes 111 can not only discharge the gas between the flow channel base plate 002 and the sealing plate 001, but also discharge excess solder between the flow channel base plate 002 and the sealing plate 001.

[0134] For some possible implementations, please refer to Figure 14 The liquid cooling plate 000 also has: an isolation zone 001d, which is located between the diversion zone 010c and the liquid outlet channel zone 010b in the second direction Y; and in the first direction X, the distance between the isolation zone 001d and the liquid inlet channel zone 010a is greater than or equal to the distance between the diversion zone 010c and the liquid inlet channel zone 010a.

[0135] Among them, the portion of the flow channel bottom plate 002 distributed in the isolation zone 001d abuts against the sealing plate 001.

[0136] The isolation zone 001d can isolate the flow distribution zone 010c from the liquid outlet flow channel zone 010b, thus preventing crossflow between the flow distribution zone 010c and the liquid outlet flow channel zone 010b and ensuring the cooling effect of the liquid cooling plate 000.

[0137] For some possible implementation methods, please refer to Figure 5 , Figure 12 and Figure 16 The flow channel bottom plate 002 also has multiple turbulence protrusions 105 distributed in the liquid outlet flow channel area 010b; multiple turbulence protrusions 105 are distributed around multiple second main flow channels 104c and multiple second branch flow channels 104d.

[0138] Among them, the side of the turbulence protrusion 105 facing the sealing plate 001 abuts against the side of the sealing plate 001 facing the flow channel bottom plate 002.

[0139] Dense turbulence protrusions 105 are arranged within the liquid outlet flow channel area 010b of the liquid cooling plate 000. These protrusions 105 turbulence enhance the turbulence of the coolant, improve heat transfer efficiency, and further reduce temperature difference. These structures alter the flow pattern of the coolant, increasing its contact area and time with the flow channel wall. Compared to a laminar flow liquid cooling plate without turbulence, the contact between the coolant and the flow channel wall is more thorough in turbulent flow, resulting in more efficient heat transfer and thus removing more heat, significantly improving heat dissipation efficiency. Verification has shown that incorporating turbulence structures effectively improves heat dissipation.

[0140] In liquid cooling systems, if the coolant flow is obstructed, localized gas or liquid accumulation may occur, resulting in trapped gas and water. Turbulence design disrupts the coolant flow pattern, allowing gas and liquid to be distributed more evenly within the flow channels, preventing localized accumulation, ensuring smooth coolant circulation, and maintaining good heat dissipation performance.

[0141] By using a turbulence design to alter the flow velocity and direction of the coolant within the flow channel, the coolant can be more evenly distributed throughout the entire flow channel space, allowing for more thorough and uniform heat exchange with the heat-generating components. This prevents localized overheating or undercooling and improves the overall heat transfer uniformity of the liquid cooling plate.

[0142] For some possible implementation methods, please refer to Figure 5 and Figure 16 The multiple turbulence convex hulls 105 are divided into: multiple groups of turbulence convex hulls 105 distributed along the first direction X, and each group of turbulence convex hulls 105 may include at least two turbulence convex hulls 105 arranged along the second direction Y.

[0143] Among them, for two adjacent sets of turbulence convex hulls 105, at least two turbulence convex hulls 105 in one set of turbulence convex hulls 105 are staggered with at least two turbulence convex hulls 105 in the other set of turbulence convex hulls 105 in the second direction Y.

[0144] like Figure 16 As shown, one set of turbulence bumps 105 consists of four bumps, and the adjacent set of turbulence bumps 105 consists of three bumps. These two sets of turbulence bumps 105 are staggered. It should be noted that the staggered arrangement does not mean that every single turbulence bump 105 in the two sets of turbulence bumps 105 must be staggered. It is sufficient that the two adjacent sets of turbulence bumps 105 are not exactly the same in number and are not arranged in parallel.

[0145] In this embodiment, the turbulence effect is achieved by staggered arrangement of turbulence protrusions 105, and by arranging them in the first direction X and the second direction Y, more turbulence protrusions 105 can be set in the liquid outlet flow channel area 010b to provide a better turbulence effect.

[0146] For some possible implementation methods, please refer to Figure 5 and Figure 16 In each set of turbulence convex 105, the spacing between any two adjacent turbulence convex 105 is the same in the second direction Y.

[0147] like Figure 16 As shown, for two adjacent sets of turbulence convex hulls 105, the number of turbulence convex hulls 105 in one set is greater than the number of turbulence convex hulls 105 in the other set.

[0148] Among them, for a relatively large group of turbulence convex hulls 105 (such as...) Figure 16 The four bulges 105 on the left side of the middle section have equal widths in the second direction Y; for a smaller group of bulges 105 (such as...), the width of each bulge 105 in the second direction Y is equal. Figure 16 Of the three turbulence convex hulls 105 on the right side, at least two of the turbulence convex hulls 105 have unequal widths in the second direction Y.

[0149] Among some possible implementations, such as Figure 5 , Figure 17 and Figure 18 As shown, the flow channel base plate 002 may include: base plate body 002a and flow channel component 002b.

[0150] The base plate body 002a has a flow channel opening 002c corresponding to the flow channel component 002b; the flow channel component 002b is located on the side of the base plate body 002a away from the sealing plate 001, the flow channel component 002b is fixedly connected to the base plate body 002a at the flow channel opening 002c, and the flow channel component 002b has a flow channel groove 104 communicating with the flow channel opening 002c; the base plate body 002a abuts against the sealing plate 001.

[0151] The base plate body 002a and the flow channel component 002b are integrally stamped structures.

[0152] In other words, in this embodiment, the flow channel base plate 002 is formed by stamping to create the flow channel groove 104 and the turbulence protrusion 105; in other embodiments, auxiliary slots for reinforcing ribs 110 can also be formed by stamping. Stamping allows for the formation of more complex and refined flow channel structures, enabling the coolant to be more evenly distributed within the liquid cooling plate 000 and to fully contact the heat-generating components, thereby improving heat dissipation efficiency. Furthermore, the stamping process allows for high-precision dimensional control, resulting in higher dimensional accuracy of the liquid cooling plate 000 and better consistency during mass production. This is crucial for ensuring the assembly accuracy with other components and the stability of the heat dissipation effect.

[0153] For example, in this embodiment of the application, the flow channel base plate 002 and the sealing plate 001 are fixedly connected by brazing. Through the brazing process, the flow channel plate formed by the flow channel base plate 002 and the sealing plate 001 can obtain higher connection strength and better sealing performance, and can withstand higher pressure and vibration, thereby improving the reliability and service life of the liquid cooling plate 000.

[0154] For example, in the embodiments of this application, the flow channel base plate 002 and the sealing plate 001 can be made of modified (MOD) aluminum alloy material, such as aluminum-manganese alloy, such as AL-3003 MOD material. MOD material can provide better performance, such as high hardness, high strength and high wear resistance, good toughness and corrosion resistance, machinability and performance can be improved through heat treatment.

[0155] Among some possible implementations, such as Figure 2 As shown, the liquid cooling plate 000 may further include: multiple insulation plates 004, which abut against the side of the flow channel bottom plate 002 away from the sealing plate 001. In the first direction X, an insulation plate 004 is distributed between two adjacent first support beams 201. That is, the insulation plate 004 contacts the part of the flow channel bottom plate 002 that is not covered by the support beams. That is, it is set between the support beams in the support frame 002, which can prevent condensation from occurring at the bottom of the flow channel bottom plate 002.

[0156] For example, when the support frame 003 includes a second support beam 202, an insulation board 004 is also distributed between the adjacent first support beam 201 and second support beam 202.

[0157] In summary, the liquid cooling plate provided in this application includes: a flow channel base plate, a sealing plate, and a support frame. The support frame abuts against the flow channel base plate via a first support structure of a first support beam, and the projection of the first support structure onto the sealing plate does not overlap with the projection of the flow channel groove onto the sealing plate. Thus, during the support of the flow channel base plate, the portion of the flow channel base plate with the flow channel groove will not be pressurized against the support frame. Therefore, the fluid flow channel remains intact and undeformed during the use of the liquid cooling plate, ensuring that the cooling function of the liquid cooling plate is not affected. When supporting a battery module, the portion of the flow channel base plate with the flow channel groove will not be deformed under pressure, meaning the hollow portion of the flow channel plate will not be deformed under pressure.

[0158] This application also provides a battery box, which may include: a battery module and a liquid cooling plate abutting against the battery module, wherein the liquid cooling plate is the liquid cooling plate 000 described in any of the above embodiments. The battery box may have the technical effects of the liquid cooling plate 000 described in any of the above embodiments, which will not be repeated here.

[0159] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0160] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A liquid-cooled plate, characterized in that, include: The flow channel base plate (002), the sealing plate (001), and the support frame (003); The flow channel bottom plate (002) has multiple flow channel grooves (104); The sealing plate (001) is fixedly connected to one side of the flow channel bottom plate (002) having the flow channel groove (104); the sealing plate (001) and the plurality of flow channel grooves (104) are used to form a fluid flow channel; The support frame (003) is connected to the side of the flow channel bottom plate (002) away from the sealing plate (001); The support frame (003) includes a frame body and a plurality of first support beams (201); the plurality of first support beams (201) are arranged in a first direction and are all fixedly connected to the frame body; each first support beam (201) has at least two first support structures (301) on the side facing the flow channel bottom plate (002); There is a first gap between the first support beam (201) and the flow channel bottom plate (002), the first support structure (301) abuts against the flow channel bottom plate (002), and the orthographic projection of the first support structure (301) on the sealing plate (001) and the orthographic projection of the flow channel groove (104) on the sealing plate (001) do not overlap.

2. The liquid cooling plate according to claim 1, characterized in that, The first support beam (201) includes: a first support beam body (201a) and the at least two first support structures (301); The first support beam body (201a) has at least two first openings (201b), and the at least two first openings (201b) correspond one-to-one with the at least two first support structures (301). Each first support structure (301) is fixedly connected to the first support beam body (201a) at the corresponding first opening (201b), and the first support structure (301) can also form a first cavity (201c) that communicates with the first opening (201b).

3. The liquid cooling plate according to claim 2, characterized in that, The first support beam body (201a) and the at least two first support structures (301) are integrally stamped structures.

4. The liquid cooling plate according to claim 1, characterized in that, The support frame (003) further includes: at least one second support beam (202); The at least one second support beam (202) is fixedly connected to the frame body, and one second support beam (202) is distributed in the first direction between two adjacent first support beams (201); each second support beam (202) has at least two second support structures (401) on the side facing the flow channel bottom plate (002); There is a second gap between the second support beam (202) and the flow channel bottom plate (002), the second support structure (401) is connected to the flow channel bottom plate (002), and the orthographic projection of the second support structure (401) on the sealing plate (001) and the orthographic projection of the flow channel groove (104) on the sealing plate (001) do not overlap.

5. The liquid cooling plate according to claim 4, characterized in that, The liquid cooling plate (000) further includes at least two first connectors (501), and the second support structure (401) is connected to the flow channel bottom plate (002) through the first connectors (501).

6. The liquid cooling plate according to claim 4, characterized in that, The second support beam (202) includes: a second support beam body (202a) and the at least two second support structures (401); The second support beam body (202a) has at least two second openings (202b), and the at least two second openings (202b) correspond one-to-one with the at least two second support structures (401). Each second support structure (401) is fixedly connected to the second support beam body (202a) at the corresponding second opening (202b), and the second support structure (401) can also form a second cavity (202c) that communicates with the second opening (202b).

7. The liquid cooling plate according to claim 6, characterized in that, The second support beam body (202a) and the at least two second support structures (401) are integrally stamped structures.

8. The liquid cooling plate according to claim 4, characterized in that, The support frame (003) further includes a third support beam (203), the extension direction of which is parallel to the first direction; The third support beam (203) is fixedly connected to the side of the plurality of first support beams (201) facing the flow channel bottom plate (002), and is fixedly connected to the side of the at least one second support beam (202) facing the flow channel bottom plate (002). The side of the third support beam (203) facing the flow channel bottom plate (002) has a third support structure (405). The third support structure (405) is connected to the flow channel bottom plate (002), and the orthographic projection of the third support structure (405) on the sealing plate (001) does not overlap with the orthographic projection of the flow channel groove (104) on the sealing plate (001).

9. The liquid cooling plate according to claim 8, characterized in that, The liquid cooling plate (000) further includes: at least one second connector (502), the second connector (502) being connected to the second support beam (202); The portion of the third support beam (203) that intersects with the second support beam (202) has a clearance hole (406), and the second connector (502) passes through the clearance hole (406) and connects to the flow channel bottom plate.

10. The liquid-cooled plate according to any one of claims 1-9, characterized in that, The liquid cooling plate (000) has two liquid inlet channel areas (010a) and one liquid outlet channel area (010b) arranged along a second direction; the two liquid inlet channel areas (010a) are located on the same side of the liquid outlet channel area (010b); The fluid flow channel includes: a plurality of first main flow channels (104a) distributed in each of the inlet flow channel areas (010a), and a plurality of first branch flow channels (104b) for connecting the plurality of first main flow channels (104a); The fluid flow channel further includes: a plurality of second main flow channels (104c) distributed within the liquid outlet flow channel area (010b), and a plurality of second branch flow channels (104d) for connecting the plurality of second main flow channels (104c); The first main channel (104a) and the second main channel (104c) extend in a direction parallel to the first direction, and the first direction intersects the second direction.

11. The liquid cooling plate according to claim 10, characterized in that, The liquid cooling plate (000) further comprises: a diversion area (010c) located on the same side of the two liquid inlet channel areas (010a) in the first direction; The fluid flow channel further includes a flow channel network (109) distributed within the flow channel area (010c), the flow channel network (109) being connected to at least one first main flow channel (104a) within each of the inlet flow channel areas (010a).

12. The liquid cooling plate according to claim 11, characterized in that, The flow channel network (109) is used to divide the flow zone (010c) into at least two sub-zones; the portion of the flow channel base plate (002) located in the sub-zone has at least one reinforcing rib (110), the reinforcing rib (110) has an auxiliary slot, the auxiliary slot is separately disposed from the flow channel groove (104).

13. The liquid cooling plate according to claim 11, characterized in that, The liquid cooling plate (000) further comprises: an isolation zone (001d), which is located between the diversion zone (010c) and the liquid outlet channel zone (010b) in the second direction; and in the first direction, the distance between the isolation zone (001d) and the liquid inlet channel zone (010a) is greater than or equal to the distance between the diversion zone (010c) and the liquid inlet channel zone (010a); The portion of the flow channel bottom plate (002) distributed in the isolation zone (001d) abuts against the sealing plate (001).

14. The liquid cooling plate according to claim 10, characterized in that, The flow channel bottom plate (002) also has a plurality of turbulence protrusions (105) distributed in the liquid outlet flow channel area (010b); the plurality of second main flow channels (104c) and the plurality of second branch flow channels (104d) are distributed around the plurality of turbulence protrusions (105); The side of the turbulence protrusion (105) facing the sealing plate (001) abuts against the side of the sealing plate (001) facing the flow channel bottom plate (002).

15. The liquid-cooled plate according to claim 14, characterized in that, The plurality of turbulence bumps (105) are divided into: a plurality of groups of turbulence bumps (105) distributed along the first direction, each group of turbulence bumps (105) including at least two turbulence bumps (105) arranged along the second direction; Among them, for two adjacent sets of turbulence convex hulls (105), at least two turbulence convex hulls (105) in one set of turbulence convex hulls (105) are staggered with at least two turbulence convex hulls (105) in the other set of turbulence convex hulls (105) in the second direction.

16. The liquid-cooled plate according to claim 15, characterized in that, For two adjacent sets of the turbulence convex hulls (105), the number of turbulence convex hulls (105) in one set of the turbulence convex hulls (105) is greater than the number of turbulence convex hulls (105) in the other set of the turbulence convex hulls (105). Among them, for a group of a large number of the turbulence convex hulls (105), the width of each turbulence convex hull (105) is equal in the second direction; For a small number of the aforementioned bulges (105), at least two of the bulges (105) have unequal widths in the second direction.

17. The liquid-cooled plate according to any one of claims 1-9 and 11-16, characterized in that, The flow channel base plate (002) includes: a base plate body (002a) and a flow channel component (002b); The base plate body (002a) has a flow channel opening (002c) corresponding to the flow channel component (002b); the flow channel component (002b) is located on the side of the base plate body (002a) away from the sealing plate (001), the flow channel component (002b) is fixedly connected to the base plate body (002a) at the flow channel opening (002c), and the flow channel component (002b) has a flow channel groove (104) communicating with the flow channel opening (002c); the base plate body (002a) abuts against the sealing plate (001); The base plate body (002a) and the flow channel component (002b) are integrally stamped structures.

18. The liquid-cooled plate according to any one of claims 1-9 and 11-16, characterized in that, The liquid cooling plate (000) further includes: a plurality of insulation plates (004), the plurality of insulation plates (004) abutting against the side of the flow channel bottom plate (002) away from the sealing plate (001), and in the first direction, an insulation plate (004) is distributed between two adjacent first support beams (201).

19. A battery compartment, characterized in that, include: A battery module, and a liquid cooling plate abutting against the battery module, wherein the liquid cooling plate is the liquid cooling plate (000) according to any one of claims 1-18.

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