Fluid cooling plate, fluid cooling system and battery module

Abstract

The present disclosure provides a fluid cooling plate and a battery module. The fluid cooling plate includes a fluid cooling plate body and a spoiler, the fluid cooling plate body extending along a first direction and having curved or flat sides that match the side walls of the battery cells. The fluid cooling plate body has a plurality of flow channels extending along the first direction, and the spoiler is disposed within the flow channels, and the spoiler has a single spiral structure and extends along the first direction. The structure of the fluid cooling plate provided in the present disclosure can improve the heat exchange efficiency of the fluid cooling plate.

Description

[Technical Field]

[0001] This disclosure claims priority to Chinese patent application No. 202310800797.2, filed with the China Patent Office on June 30, 2023, and bearing application No. 202321712215.7, filed with the China Patent Office on June 30, 2023, and to patent application No. 202321712225.0, filed with the China Patent Office on June 30, 2023, and bearing application No. 202321712225.0, the entire contents of which are incorporated herein by reference. The present disclosure relates to the field of battery technology, and more particularly to a fluid cooling plate, a fluid cooling system, and a battery module. [Background technology]

[0002] Serpentine fluid cooling plates exchange heat by contacting the sides of the battery cells, and have the advantages of high heat dissipation efficiency, a large heat exchange area, small pressure drop, good thermal insulation, and high structural strength, making them the mainstream fluid cooling plate for power batteries. Traditionally, the flow channels in serpentine fluid cooling plates consist of multiple regular rectangular cavities, and the coolant is distributed from the inlet collector into the multiple cavities, flows within the channels, and forms convective heat exchange with the battery cells, finally collecting in the outlet collector and flowing out through the outlet. Summary of the Invention [Problem to be solved by the invention]

[0003] Because the flow velocity of the coolant at the inlet is high, it is difficult to form turbulence in the flow path. At the same time, the heat exchange area in the mold cavity is limited, so the heat transfer area inside the serpentine fluid cooling plate is small, which results in low heat exchange efficiency of the fluid cooling plate. [Means for solving the problem]

[0004] The present disclosure provides a fluid cooling plate, which includes a fluid cooling plate body and a spoiler, wherein the fluid cooling plate body extends along a first direction, and the side of the fluid cooling plate body is curved or flat, and the side of the fluid cooling plate body matches the side wall of a battery cell, and a plurality of flow channels extending along the first direction are provided inside the fluid cooling plate body, and the spoiler is provided within the flow channels, and the spoiler has a single spiral structure and extends along the first direction.

[0005] The present disclosure further provides a fluid cooling system, the fluid cooling system including the fluid cooling plate and a collector, a flow path provided inside the fluid cooling plate, the flow path including an inlet end and an outlet end, the collector including an inlet collector and an outlet collector, the inlet collector communicating with the inlet end and the outlet collector communicating with the outlet end, the fluid cooling plate extending along a first direction, the fluid cooling plate including opposite ends along the first direction, and the inlet end, the outlet end, the inlet collector and the outlet collector being at the same end of the fluid cooling plate.

[0006] The present disclosure further provides a battery module, the battery module including the fluid cooling system described above. [Effects of the Invention]

[0007] The present disclosure provides a fluid cooling plate, and a spoiler is provided in the flow path of the fluid cooling plate. The spoiler has a single spiral structure, and the extension direction of the spiral of the single spiral structure is the same as the extension direction of the flow path. After the coolant enters the flow path, the single spiral structure creates strong turbulence, which can effectively improve the heat exchange efficiency of the fluid cooling pipe.

[0008] The present disclosure further provides a fluid cooling system, wherein the inlet end, outlet end, inlet collector and outlet collector of the fluid cooling plate are provided at the same end of the fluid cooling plate, thereby facilitating convergence and quick connection of the inlet end and the inlet collector, and facilitating convergence and quick connection of the outlet end and the outlet collector.

[0009] The present disclosure further provides a battery module, in which the collector and the connecting pipes are provided on the same side of the fluid cooling plate, thereby saving the space occupied by the fluid cooling system in the battery module. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a structural diagram of a fluid cooling plate provided in an embodiment of the present disclosure; [Figure 2] 1 is a structural diagram of a fluid cooling plate and a battery cell combined according to an embodiment of the present disclosure. [Figure 3] 1 is a structural diagram of a portion of a fluid cooling plate provided in an embodiment of the present disclosure. [Figure 4] 4 is an enlarged view of a portion A of the fluid cooling plate provided in the embodiment of FIG. 3. [Figure 5] FIG. 2 is a structural diagram of a spoiler of a fluid cooling plate provided in an embodiment of the present disclosure. [Figure 6] FIG. 1 is a structural diagram of a fluid cooling system provided in an embodiment of the present disclosure. [Figure 7] FIG. 2 is a structural diagram of a fluid cooling plate of the fluid cooling system provided in an embodiment of the present disclosure. [Figure 8] FIG. 2 is a structural diagram of a collector of the fluid cooling system provided in an embodiment of the present disclosure. [Figure 9] 1 is a structural diagram of a battery module provided in an embodiment of the present disclosure; DETAILED DESCRIPTION OF THE INVENTION

[0011] Unless otherwise clearly specified or limited in the description of this disclosure, the terms "coupled," "connected," and "fixed" are to be interpreted broadly, and may refer to, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, an internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art will be able to understand the specific meanings of the terms in this disclosure depending on the specific circumstances.

[0012] Unless otherwise expressly specified and limited in this disclosure, a first feature being "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, a first feature being "above," "above," or "on top" of a second feature includes being directly above and diagonally above the second feature, where the first feature is at a higher horizontal elevation than the second feature. A first feature being "below," "below," or "on bottom" of a second feature includes being directly below and diagonally below the second feature, where the first feature is at a lower horizontal elevation than the second feature.

[0013] In describing the present embodiment, the terms "upper," "lower," "left," "right," "front," "rear," and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are used to facilitate explanation and operation, and do not indicate or imply that the illustrated devices or elements include, are configured, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present disclosure. Furthermore, the terms "first" and "second" are used for the purpose of distinction in the explanation and do not have any particular meaning.

[0014] 1 and 5, an embodiment of the present disclosure provides a fluid cooling plate 10, which includes a fluid cooling plate body 100 and a spoiler 200, wherein the fluid cooling plate body 100 extends along a first direction, and the side of the fluid cooling plate body 100 is curved or flat, and the side of the fluid cooling plate body 100 matches the side wall of the battery cell 20, and a plurality of flow channels 110 extending along the first direction are provided inside the fluid cooling plate body 100, and the spoiler 200 is provided within the flow channels 110, and the spoiler 200 has a single spiral structure and extends along the first direction.

[0015] As shown in Figures 1 and 2, the fluid cooling plate 10 is a plate-like structure having a predetermined thickness, which is disposed between the battery cells 20 and contacts the side walls of the battery cells 20, thereby providing a cooling effect to the battery cells 20.

[0016] Specifically, as shown in FIG. 1 , the fluid cooling plate 10 includes a fluid cooling plate body 100, which extends along a first direction (i.e., the X direction in the figure), and which includes two opposing side surfaces 101, the shape of which matches the shape of the side walls of the battery cells 20, thereby increasing the contact area between the fluid cooling plate 10 and the battery cells 20 and improving the heat exchange efficiency.

[0017] When the battery cells 20 are cylindrical battery cells, the side surfaces 101 are curved, and the fluid cooling plate 10 is a curved fluid cooling plate. As shown in FIG. 2 , the side surfaces 101 of the fluid cooling plate body 100 are corrugated, concave-convex curved surfaces extending along a first direction. The concave-convex curved surfaces include concave and convex portions, and the curvature of the concave and convex portions matches the diameter of the battery cells 20. When the fluid cooling plate 10 is installed between the battery cells 20, the concave portions of the side surfaces 101 on the side closest to the battery cells 20 are in close contact with the side walls of the cylindrical battery cells, and the convex portions are between the adjacent battery cells 20. This increases the contact area between the side surfaces 101 of the fluid cooling plate body and the side walls of the battery cells 20. The increased contact area is beneficial for the transfer of heat from the battery cells 20, resulting in a faster heat conduction rate and better temperature uniformity, which is beneficial for improving the heat exchange efficiency of the fluid cooling plate 10.

[0018] When the battery cells 20 are rectangular or soft-pack type battery cells, the side surfaces 101 are flat, and the fluid cooling plate 10 is a flat fluid cooling plate. When the fluid cooling plate 10 is installed between the battery cells 20, the flat side surfaces 101 are in close contact with the side walls of the flat battery cells, thereby exchanging heat and cooling the battery cells 20.

[0019] As shown in FIG. 3, the flow path 110 is a hollow channel provided inside the fluid cooling plate 10, the channel extends along a first direction (i.e., the X direction in the figure), the flow path 110 includes an inlet and an outlet, the coolant enters the channel from the inlet and is output to the fluid cooling plate 10 from the outlet, the coolant flowing through the flow path 110 exchanges heat with the battery cells 20, thereby realizing cooling of the battery cells 20.

[0020] In some embodiments, the flow channels 110 match the shape of the side surface of the fluid cooling plate body 100. When the side surface 101 of the fluid cooling plate body 100 is curved, the flow channels 110 are arranged in a curved shape along the first direction, and the curved flow channels enhance the turbulent flow effect of the coolant in the flow channels, thereby improving the fluid cooling efficiency of the fluid cooling plate 10. When the side surface 101 of the fluid cooling plate body 100 is flat, the flow channels 110 are arranged in a straight shape along the first direction.

[0021] 3 and 4, the spoiler 200 is elongated and has a single spiral structure. The extension direction of the spoiler 200 coincides with the extension direction of the flow channel 110. The spoiler 200 is disposed within the flow channel 110, forming a single spiral channel between the spoiler 200 and the inner wall of the flow channel 110, through which the coolant flows. The coolant used in the battery fluid cooling plate 10 is typically a low-viscosity fluid, such as water. Compared with a double-spiral channel structure, the single-spiral channel employed in the present disclosure is more suitable for transporting battery coolant. Furthermore, the single-spiral structure is simpler and less costly to manufacture. The coolant flows faster through the single-spiral channel, resulting in higher heat exchange efficiency and less clogging.

[0022] In some embodiments, the spoiler 200 matches the shape of the flow channel 110. When the side surface 101 of the fluid cooling plate body 100 is curved, the spoiler 200 is provided in a curved shape along the first direction, which can on the one hand improve conformity with the flow channel shape and on the other hand increase the turbulence effect and improve the fluid cooling efficiency of the fluid cooling plate 10. When the side surface 101 of the fluid cooling plate body 100 is flat, the spoiler 200 is provided in a straight shape along the first direction.

[0023] The present disclosure adds a single spiral spoiler within the flow passage of the fluid cooling plate 10 to enhance the turbulence of the coolant flowing through the flow passage, while simultaneously increasing the contact area between the coolant and the spoiler, thereby improving the heat exchange efficiency of the coolant.

[0024] In some embodiments, as shown in FIG. 5, the spoiler 200 includes a helical blade 210 having a through hole 220 extending through the helical blade 210 along a first direction.

[0025] Specifically, as shown in FIG. 5, the spoiler 200 is composed of spiral blades, and by providing the spoiler 200 in a blade-type spiral structure, the contact area between the coolant and the blade surface can be increased, thereby improving the turbulence effect and heat exchange efficiency.

[0026] However, after adding the spoiler 200 to the flow path 110, the flow resistance of the coolant increases accordingly, which increases the pressure drop of the entire fluid cooling system. To ensure that the pressure drop of the entire fluid cooling system meets the requirements, the present disclosure provides through holes 220 in the spiral vanes 210 of the spoiler 200. The through holes 220 penetrate the spiral vanes 210, allowing some of the coolant to flow through the through holes 220, which can effectively reduce the flow resistance of the coolant in the flow path 110. At the same time, the provision of the through holes 220 can also enhance turbulence and improve heat exchange efficiency.

[0027] In some embodiments, the spoiler 200 is provided with a plurality of through-holes 220, which are uniformly distributed among the spiral vanes 210 to ensure uniformity of heat exchange.

[0028] In some embodiments, the cross section of the through-hole 220 may be a regular shape, such as a circle, a square, or an irregular shape, but is not limited thereto.

[0029] In some embodiments, the spacing between adjacent spiral blades 210 of the spoiler 200 can be equalized, which facilitates manufacturing of the spoiler 200, simplifies the manufacturing process of the spoiler 200, and increases the versatility of the spoiler 200.

[0030] After the coolant flows into the flow passage 110 from the inlet, the temperature of the coolant rises due to heat exchange between the coolant and the battery cells 20. Therefore, in the flow passage 110, the temperature of the coolant in the portion close to the outlet along the flow direction of the coolant becomes higher than the temperature of the coolant in the portion close to the inlet, which causes a discrepancy in the heat exchange capacity between the front portion (close to the inlet) and the rear portion (close to the outlet) of the fluid-cooled plate 10, resulting in uneven heat exchange of the fluid-cooled plate 10. Therefore, in the present disclosure, the spacing between the spiral blades 210 of the spoiler 200 is adjusted to ensure uniform heat exchange.

[0031] In some embodiments, the spacing between adjacent helical vanes 210 proximate the inlet is greater than the spacing between adjacent helical vanes 210 proximate the outlet. Specifically, with the center point of the spoiler 200 in the first direction as the boundary, the spacing between any adjacent helical vanes 210 from the end of the spoiler 200 proximate the inlet to the center point is set equal and this spacing is defined as spacing a, and the spacing between any adjacent helical vanes 210 from the center point to the end of the spoiler 200 proximate the outlet is set equal and this spacing is defined as spacing b, where spacing a is smaller than spacing b. By making the spiral density of the rear portion of the spoiler 200 (from the center point to the end close to the outlet of the spoiler 200) greater than that of the front portion of the spoiler 200 (from the end close to the inlet of the spoiler 200 to the center point), the contact area between the coolant in the rear portion and the spiral blades 210 is increased, strengthening the heat exchange between the coolant and the spiral blades 210, balancing the heat exchange capacity of the front and rear portions of the fluid cooling plate 10, and allowing the coolant flowing through the fluid cooling plate 10 to exchange heat uniformly with the battery cells 20.

[0032] In another embodiment, the spacing between adjacent spiral vanes 210 of the spoiler 200 gradually decreases in the direction from the inlet to the outlet, i.e., along the flow direction of the coolant. When the temperature of the coolant flowing through the flow path 110 gradually increases due to heat exchange with the battery cells 20, by gradually decreasing the spacing between adjacent spiral vanes 210 of the spoiler 200, the heat exchange capacity of the fluid cooling plate 10 can be effectively balanced and the uniformity of the heat exchange can be ensured.

[0033] In some embodiments, as shown in FIG. 4, a protruding structure 111 is provided on the surface of the flow channel 110 facing the spoiler 200.

[0034] Specifically, the protrusion structures 111 may be semicircular or rectangular, but are not limited thereto. The protrusion structures 111 are uniformly distributed at intervals on the inner wall of the flow channel 110. The provision of the protrusion structures 111 within the flow channel 110 creates a turbulent flow in the coolant flowing through the flow channel 110, thereby improving the heat exchange efficiency of the fluid cooling plate 10.

[0035] 3 and 4, the cross section of the flow passage 110 is circular. The flow passage 110 inside the fluid-cooled plate 10 is composed of a plurality of circular channels. On the one hand, the circular structure of the channels can improve the overall structural strength of the fluid-cooled plate 10 and ensure the uniformity of heat exchange among the battery cells 20. On the other hand, the circular channels are more compatible with the spiral-structured spoiler 200, and the edges of the spiral blades 210 of the spoiler 200 and the inner walls of the circular channels are more easily in close contact with each other, forming spiral-shaped channels within the flow passage 110 and improving the heat exchange efficiency of the fluid-cooled plate 10.

[0036] In some embodiments, as shown in FIG. 1, the flow passages 110 penetrate the fluid cooling plate body 100, and the flow passages 110 are arranged side by side and parallel in a second direction perpendicular to the first direction.

[0037] Specifically, the plurality of flow channels 110 all extend along a first direction, penetrate the fluid cooling plate body 100 along the first direction, and are arranged parallel to each other at intervals in a second direction (i.e., the Y direction in the figure), forming a parallel arrangement. The fluid cooling plate 10 includes a first end face 102 and a second end face facing each other along the first direction. As shown in Figure 3, the first end face 102 of the fluid cooling plate 10 has a plurality of inlets arranged along the second direction (i.e., the Y direction in the figure), each of which is connected to a corresponding flow channel 110. The second end face of the fluid cooling plate 10 has a plurality of outlets arranged along the second direction (i.e., the Y direction in the figure), each of which is connected to a corresponding flow channel 110. In the process of the fluid cooling plate 10 cooling the battery cells 20, the coolant is distributed from the inlet collector to multiple inlets and sent into the corresponding channels 110. The coolant flows through the channels 110, exchanges heat with the battery cells 20 through convection, and finally flows out through the outlet and collects in the outlet collector. In the present disclosure, the battery cells 20 are cooled by arranging multiple channels 110 in parallel, which results in a more uniform cooling effect and higher heat exchange efficiency.

[0038] The flow paths 110 in the fluid cooling plate 10 may be arranged in series, or in a combination of series and parallel, and no specific limitations are imposed here.

[0039] The present disclosure provides a fluid cooling plate, in which a spoiler is provided in the flow path of the fluid cooling plate, the spoiler has a single spiral structure, and the extension direction of the spiral of the single spiral structure is the same as the extension direction of the flow path. After the coolant enters the flow path, the single spiral structure will form a strong turbulence, which can effectively improve the heat exchange efficiency of the fluid cooling pipe.

[0040] 6 and 8 are structural diagrams of the fluid cooling system provided by the present disclosure, which includes a fluid cooling plate 10 and a collector 2001, a flow path is provided inside the fluid cooling plate 10, the flow path has an inlet end and an outlet end, the collector 2001 includes an inlet collector 2101 and an outlet collector 2201, the inlet collector 2101 is connected to the inlet end and the outlet collector 2201 is connected to the outlet end, the fluid cooling plate 10 extends along a first direction, the fluid cooling plate 10 has opposite ends along the first direction, and the inlet end, the outlet end, the inlet collector 2101, and the outlet collector 2201 are at the same end of the fluid cooling plate 10.

[0041] Specifically, the fluid cooling plate 10 has a plate-like structure with a predetermined thickness, and channels, i.e., flow paths, through which the coolant flows are provided inside the fluid cooling plate 10. The fluid cooling plate 10 is provided on at least one side of the battery cell, and the side surface of the fluid cooling plate 10 contacts the side wall of the battery cell, and heat is exchanged between the coolant flowing in the flow paths and the battery cell, thereby cooling and lowering the temperature of the battery cell and extending the service life of the battery cell.

[0042] The collector 2001 is used to supply coolant to the fluid cooling plate 10, and the inflow collector 2101 is connected to the inflow end of the flow path and is used to input the coolant into the flow path. The coolant flows through the flow path and exchanges heat with the battery cells, and the temperature of the coolant increases after the heat exchange, and then it is output from the outflow end of the flow path and collected in the outflow collector 2201, thereby completing the cooling and temperature reduction of the battery cells.

[0043] In some embodiments, as shown in FIG. 7, along a first direction (i.e., the X direction), the fluid cooling plate 10 includes a first end 1011 and a second end 1021 facing each other, the inlet end and the outlet end of the flow path are both at the first end 1011, an inlet collector 2101 is located on the side adjacent to the first end 1011 and is connected to the inlet end, and an outlet collector 2201 is located on the side adjacent to the first end 1011 and is connected to the outlet end.

[0044] In the present disclosure, by providing the inlet end, outlet end, inlet collector 2101 and outlet collector 2201 of the fluid cooling plate 10 at the same end of the fluid cooling plate 10, on the one hand, it is possible to facilitate the concentration and quick connection of the inlet end and inlet collector 2101, and the concentration and quick connection of the outlet end and outlet collector 2201, and on the other hand, by arranging the collector 2001 and the connecting pipes on the same side of the fluid cooling plate 10, it is possible to save the space occupied by the fluid cooling system within the battery module.

[0045] In some embodiments, as shown in Figures 6 and 8, in order to facilitate the connection between the inlet end and the inlet collector 2101 and the connection between the outlet end and the outlet collector 2201, an inlet 1101 is provided at the inlet end, an outlet 120 is provided at the outlet end, an inlet joint 230 is provided on the inlet collector 2101, and an outlet joint 240 is provided on the outlet collector 2201, and by connecting the inlet 1101 to the inlet joint 230 and connecting the outlet 120 to the outlet joint 240, communication between the inlet end and the inlet collector 2101 and communication between the outlet end and the outlet collector 2201 is realized.

[0046] In some embodiments, the inlet 1101 and the inlet joint 230 are matingly connected, and the outlet 120 and the outlet joint 240 are matingly connected, facilitating quick connection between the collector 2001 and the fluid cooling plate 10 .

[0047] For example, as shown in Fig. 7, the inlet 1101 and outlet 120 of the fluid cooling plate 10 may be sockets, each including a jack 1111 with a tongue 112 on the outer periphery of the socket. As shown in Fig. 3, the inlet joint 230 and outlet joint 240 of the collector 2001 may be quick-insert joints, the outer diameter of which matches the inner diameter of the jack 1111, so that the quick-insert joints are inserted into the jack 1111 when mated. The quick-insert joints have a protrusion 241 on the outer periphery, and the jack 1111 has a recess that matches the protrusion, so that the socket and quick-insert joints are connected and fixed when mated. The quick-insertion joint is further provided with a fastener 250, and the fastener 250 has a groove 251 on the side facing the quick-insertion joint that matches the tongue 112. When mated, the tongue 112 fits into the groove 251, locking the socket and the quick-insertion joint, preventing them from falling off and improving the reliability of the connection between the fluid cooling plate 10 and the collector 2001.

[0048] The connection structure between the inlet 1101 and the inlet joint 230 and the connection structure between the outlet 120 and the outlet joint 240 are not limited to the specific structures in the above embodiment, and may be other types of fitting connection structures. The connection method between the inlet 1101 and the inlet joint 230 and the connection method between the outlet 120 and the outlet joint 240 are also not limited to the above fitting connection, and may be other connection methods, and are not specifically limited here.

[0049] In some embodiments, as shown in FIG. 6 , the inlet 1101, the outlet 120, the inlet joint 230, and the outlet joint 240 all extend along a second direction perpendicular to the first direction, and the inlet 1101 is inserted and connected to the inlet joint 230 along the second direction, and the outlet 120 is inserted and connected to the outlet joint 240 along the second direction, thereby facilitating quick connection between the fluid cooling plate 10 and the collector 2001 and effectively improving assembly efficiency.

[0050] 6, the opening directions of the inlet 1101 and the jack 1111 of the outlet 120 are the same and face the second direction (i.e., the Z direction). The collector 2001 extends along a third direction (i.e., the Y direction) perpendicular to both the first and second directions. The inlet joint 230 and the outlet joint 240 connect to the collector 2001 through short pipes, which are perpendicular to the collector 2001 (i.e., extending along the Z direction). When connecting the collector 2001 to the fluid cooling plate 10, the inlet joint 230 is inserted into the jack 1111 of the inlet 1101 along the Z direction, and the outlet joint 240 is inserted into the jack 1111 of the outlet 120 along the Z direction. This connects the inlet collector 2101 to the inlet 1101 and the outlet collector 2201 to the outlet 120, effectively improving the connection efficiency.

[0051] 7 , the fluid cooling plate 10 further includes a connection part 130, which is connected to one end of the fluid cooling plate 10, and the inlet 1101 and the outlet 120 are provided on opposite sides of the connection part 130. A plurality of channels are provided inside the connection part 130, and the channels are provided to communicate the flow paths with the inlet 1101 and the outlet 120.

[0052] 7 , the connecting part 130 extends along the first direction and includes opposing sides in the third direction, with a first extension 131 and a second extension 132 perpendicular to the connecting part 130 provided on both sides of the connecting part 130, with the inlet 1101 provided in the first extension 131 and the outlet 120 provided in the second extension 132, such that the opening directions of the jacks 1111 of the inlet 1101 and the outlet 120 face the second direction, thereby facilitating insertion and connection of the inlet 1101 and the outlet 120 with the collector 2001 in the second direction. A channel is provided inside the connecting part 130, with the inlet 1101 communicating with the first extension 131, and the first extension 131 communicating with the inlet end of the flow path through the channel. The outlet 120 communicates with a second extension 132, which communicates with the outlet end of the flow path through a channel.

[0053] The connecting part 130 adjusts the opening direction of the jacks 1111 of the inlet 1101 and the outlet 120 so that their opening directions all face the second direction, thereby facilitating insertion connection in the second direction. At the same time, by arranging the inlet 1101 and the outlet 120 on opposite sides of the connecting part 130, interference between the inlet joint 230 and the corresponding connecting pipeline, and interference between the outlet joint 240 and the corresponding connecting pipeline during connection, is avoided, preventing an impact on the reliability of the connection.

[0054] In some embodiments, the inflow collector 2101 and the outflow collector 2201 are of a single-piece molded structure, which increases the integration of the collector 2001, simplifies the process, and saves the space occupied by the collector 2001.

[0055] 8, the collector 2001 includes a collector body 201 that extends in the third direction. An inlet collector channel and an outlet collector channel that extend in the third direction are provided inside the collector body 201, with a cooling inlet 211 provided at one end of the inlet collector channel and a cooling outlet 221 provided at one end of the outlet collector channel. The collector body 201 includes opposing sides in the second direction, with an inlet joint 230 and an outlet joint 240 connected to one side of the collector body 201, with the inlet joint 230 communicating with the inlet collector channel and the outlet joint 240 communicating with the outlet collector channel. The inlet joint 230 is connected to the collector body 201 through a first short pipe 260, and the outlet joint 240 is connected to the collector body 201 through a second short pipe 270. The first short pipe 260 and the second short pipe 270 may have different lengths to avoid interference during assembly of the inlet joint 230 and the outlet joint 240 and to avoid affecting the reliability of the connection between the collector 2001 and the fluid cooling plate 10. Here, the collector body 201, the first short pipe 260, and the second short pipe 270 may also be integrally molded.

[0056] In some embodiments, as shown in FIG. 6, the fluid cooling system includes multiple fluid cooling plates 10, which are arranged side by side and in parallel, and the multiple fluid cooling plates 10 communicate with one collector 2001 to form a parallel structure.

[0057] 5 , the fluid cooling system includes a plurality of fluid cooling plates 10, which are arranged in parallel in a third direction, and the inlets 1101 and outlets 120 of the fluid cooling plates 10 are all located at a first end 1011 of the fluid cooling plates 10. A collector 2001 is located adjacent to the first end 1011 of the fluid cooling plates 10, and the collector body 201 has a plurality of pairs of inlet joints 230 and outlet joints 240 arranged in parallel along the third direction, each pair of inlet joints 230 and outlet joints 240 connecting to one fluid cooling plate 10. In the present disclosure, the fluid cooling system employs a method of connecting a plurality of fluid cooling plates in parallel, which can effectively reduce the flow resistance of the entire fluid cooling system and improve the uniformity of the flow rate of the fluid cooling system.

[0058] 6 and 7, along the second direction, the fluid cooling plate 10 includes an opposing top end 103 and a bottom end 104, and the collector 2001 is mounted on and connected to the top end 103 or the bottom end 104. Specifically, as shown in FIG. 6, a portion of the collector body 201 can be mounted on and connected to an edge at the first end 1011 of the top end 103 of the fluid cooling plate 10, thereby rationally utilizing the installation space in the second direction and reducing the space occupied by the fluid cooling system in the first direction, thereby reducing the space occupied by the fluid cooling system within the battery module or battery pack and simultaneously reducing the cost of the fluid cooling system.

[0059] In some embodiments, the channel is U-shaped, with one end of the U-shaped channel being an inlet end and the other end of the U-shaped channel being an outlet end.

[0060] Specifically, the fluid cooling plate 10 has a plurality of parallel flow paths along a first direction, each of which includes an inlet flow path and an outlet flow path. The inlet ends of the inlet flow paths and the outlet ends of the outlet flow paths are both located at the first end 1011 of the fluid cooling plate 10. The inlet and outlet flow paths communicate with each other at the second end 1021 of the fluid cooling plate 10 to form a U-shaped flow path. The coolant enters the U-shaped flow path through the inlet end at the first end 1011 of the fluid cooling plate 10, exchanges heat with the battery cells, and then exits the fluid cooling plate 10 from the outlet end at the first end 1011. By configuring the flow paths inside the fluid cooling plate 10 as U-shaped flow paths, the fluid cooling plate 10 has better temperature uniformity and a better fluid cooling effect.

[0061] In some embodiments, the fluid cooling plate 10 is corrugated along a first direction.

[0062] Specifically, as shown in Figure 5, the fluid cooling plate 10 includes two opposing side surfaces along the third direction, and the two side surfaces of the fluid cooling plate 10 are formed into corrugated, concave-convex curved surfaces. By forming the side surfaces of the fluid cooling plate 10 into corrugated, concave-convex curved surfaces, the concave portions of the fluid cooling plate 10 are in close contact with the side walls of the battery cells of the cylindrical battery module, and the protruding portions of the fluid cooling plate 10 are located between adjacent battery cells, thereby increasing the contact area between the side surfaces of the fluid cooling plate 10 and the side walls of the battery cells. The increased contact area is beneficial for the transfer of heat from the battery cells, resulting in a faster heat conduction rate and better temperature uniformity, and is helpful in improving the heat exchange efficiency of the fluid cooling plate 10.

[0063] The present disclosure further provides a battery module including the fluid cooling system described above.

[0064] As shown in FIG. 9, the battery module includes a battery cell group and a fluid cooling system.

[0065] Each battery cell group includes a plurality of battery cells 20, and the plurality of battery cells 20 are arranged in an array. Here, the battery cells 20 may be, but are not limited to, cylindrical battery cells 20 or rectangular battery cells 20.

[0066] The fluid cooling system includes a fluid cooling plate 10 and a collector 2001. A flow path is provided inside the fluid cooling plate 10, and the flow path includes an inlet end and an outlet end. The collector 2001 includes an inlet collector 2101 and an outlet collector 2201, where the inlet collector 2101 communicates with the inlet end and the outlet collector 2201 communicates with the outlet end. Here, the fluid cooling plate 10 extends along a first direction, has opposite ends along the first direction, and the inlet end, outlet end, inlet collector 2101, and outlet collector 2201 are located at the same end of the fluid cooling plate 10.

[0067] The fluid cooling plate 10 is placed between two adjacent rows or columns of battery cells 20, the sides of the fluid cooling plate 10 contact the side walls of the battery cells 20, the coolant is distributed by the inflow collector 2101 and sent into multiple channels from the inflow end, the coolant flows in the channels and forms convective heat exchange with the battery cells 20, and then is output to the fluid cooling plate 10 from the outflow end, and finally collected in the outflow collector 2201, thereby realizing cooling of the battery cells 20 by the fluid cooling system.

[0068] In some embodiments, the battery module further includes a housing, the housing including a cavity, and the battery cell group, the fluid cooling system, the inflow collector, and the outflow collector are all housed within the cavity.

[0069] The present disclosure provides a fluid cooling system and a battery module, in which the inlet end, outlet end, inlet collector, and outlet collector of the fluid cooling plate are arranged on the same end of the fluid cooling plate, which on the one hand facilitates concentration and quick connection of the inlet end and inlet collector, and concentration and quick connection of the outlet end and outlet collector; and on the other hand, by arranging the collector and connecting pipes on the same side of the fluid cooling plate, the space occupied by the fluid cooling system in the battery module can be saved. [Explanation of symbols]

[0070] 10 Fluid Cooling Plate 20 battery cells 100 Fluid cooling plate body 110 Flow path 200 Spoilers

Claims

1. 1. A fluid cooling plate comprising: a fluid-cooled plate body and a spoiler; The fluid cooling plate body extends along a first direction, and a side surface of the fluid cooling plate body is curved or flat, and the side surface of the fluid cooling plate body matches a side wall of the battery cell; a plurality of flow paths extending along the first direction within the fluid cooling plate body, the spoiler being disposed within the flow paths; The fluid cooling plate, wherein the spoiler has a single spiral structure and extends along the first direction.

2. The fluid cooling plate of claim 1 , wherein the spoiler includes a helical vane having a through hole formed therein, the through hole passing through the helical vane along the first direction.

3. The fluid-cooled plate according to claim 2 , wherein the spoiler has a plurality of the through-holes, the plurality of through-holes being uniformly distributed among the spiral vanes.

4. The fluid-cooled plate of claim 2 , wherein the spacing between adjacent spiral vanes of the spoiler is equal.

5. 3. The fluid cooling plate of claim 2, wherein the flow passage includes an inlet and an outlet, and the spacing between adjacent spiral vanes proximate to the inlet is greater than the spacing between adjacent spiral vanes proximate to the outlet.

6. 3. The fluid cooling plate according to claim 2, wherein the flow path includes an inlet and an outlet, and the spacing between adjacent spiral blades of the spoiler becomes progressively smaller in a direction from the inlet to the outlet.

7. The fluid cooling plate according to claim 1 , wherein a protrusion structure is provided on a surface of the flow path facing the spoiler.

8. 7. The fluid cooling plate according to claim 1, wherein the flow passages have a circular cross section.

9. 7. A fluid cooling plate according to claim 1, wherein the flow paths penetrate the fluid cooling plate body, and a plurality of the flow paths are arranged side by side and parallel in a second direction perpendicular to the first direction.

10. 1. A fluid cooling system comprising: A fluid cooling plate according to any one of claims 1 to 9 and a collector, the flow path includes an inlet end and an outlet end; the collector includes an inflow collector and an outflow collector, the inflow collector communicating with the inflow end and the outflow collector communicating with the outflow end; the fluid cooling plate extends along a first direction, the fluid cooling plate includes opposite ends along the first direction; a fluid cooling system, wherein the inlet end, the outlet end, the inlet collector, and the outlet collector are at the same end of the fluid cooling plate;

11. an inlet is provided at the inlet end and an outlet is provided at the outlet end; the inflow collector includes an inflow joint, and the outflow collector includes an outflow joint; The fluid cooling system of claim 10 , wherein the inlet is matingly connected to the inlet joint and the outlet is matingly connected to the outlet joint.

12. 12. The fluid cooling system of claim 11, wherein the inlet, the outlet, the inlet joint, and the outlet joint all extend along a second direction perpendicular to the first direction, and the inlet is inserted and connected to the inlet joint along the second direction, and the outlet is inserted and connected to the outlet joint along the second direction.

13. 13. The fluid cooling system of claim 12, wherein the fluid cooling plate further includes a connection part, the connection part being connected to one end of the fluid cooling plate, the inlet and the outlet being provided on opposite sides of the connection part, and a plurality of channels being provided within the connection part, the channels being arranged to connect the inlet to the flow path and the outlet to the flow path.

14. 14. The fluid cooling system of claim 10, wherein the inflow collector and the outflow collector are of one-piece construction.

15. 15. The fluid cooling system of claim 14, wherein the fluid cooling system includes a plurality of the fluid cooling plates, the plurality of fluid cooling plates being arranged side by side and in parallel, and the plurality of fluid cooling plates being in communication with one of the collectors to form a parallel structure.

16. 13. The fluid cooling system of claim 12, wherein along the second direction, the fluid cooling plate includes opposing top and bottom ends, and the collector rests on and connects to the top or bottom end.

17. 14. The fluid cooling system of claim 10, wherein the flow path is U-shaped, one end of the U-shaped flow path being the inlet end, and the other end of the U-shaped flow path being the outlet end.

18. The fluid cooling system according to claim 10 , wherein the fluid cooling plate is wavy along the first direction.

19. A battery module, A battery module comprising the fluid cooling system according to any one of claims 10 to 18.

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