Energy storage battery liquid cooling plate with U-shaped heat dissipation waterway structure and energy storage battery module

Abstract

The utility model provides an energy storage battery liquid cooling plate with a U-shaped heat dissipation waterway structure and an energy storage battery module, and the energy storage battery liquid cooling plate comprises a liquid cooling bottom plate which is provided with a first longitudinal direct current groove and a second longitudinal direct current groove which are respectively located at two sides of a second direction, the transverse direct-current groove is connected to the end of the first longitudinal direct-current groove and the end of the second longitudinal direct-current groove, the first longitudinal direct-current groove and the second longitudinal direct-current groove extend in the first direction, the transverse direct-current groove extends in the second direction, and the first direction is perpendicular to the second direction; the outer cover plate is connected to the liquid cooling bottom plate and covers the first longitudinal direct current groove, the second longitudinal direct current groove and the transverse direct current groove so as to form a U-shaped water channel; and the radiator is arranged in the U-shaped water channel. The problem that in the prior art, cooling liquid is not high in heat dissipation efficiency is solved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a U-shaped heat dissipation water channel structure for energy storage batteries and an energy storage battery module. Background Technology

[0002] Energy storage batteries are an important component of various outdoor electrical devices, such as electric vehicles. High-voltage power batteries generate a large amount of heat during operation. Therefore, a good heat dissipation system is crucial to ensuring the charging and discharging performance and lifespan of the power battery. Among the heat dissipation methods for energy storage batteries, liquid cooling plates are a key component of the thermal management system.

[0003] In existing liquid cooling plate structures, an inlet and outlet channel (arranged parallel on both sides) are typically formed on the base plate for the cooling medium to flow through. Multiple flow channels are spaced apart between the inlet and outlet channels, and a cover plate is fixed to the base plate, connecting the inlet pipe to the inlet channel and the outlet pipe to the outlet channel. Each flow channel is connected to both the inlet and outlet channels at its two ends. In existing technologies, the flow channels are arranged in a serpentine or S-shape, and the channels are generally long. Excessive bends and deflections result in high flow resistance, leading to low heat dissipation efficiency.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a U-shaped heat dissipation water channel structure for energy storage battery liquid cooling plate and energy storage battery module, which solves the problem that the flow resistance of the coolant in the heat dissipation water channel through the inlet and outlet water channels in the prior art is large, resulting in low heat dissipation efficiency of the liquid cooling plate.

[0006] On one hand, this application provides a U-shaped heat dissipation water channel structure for a storage battery liquid cooling plate, including: a liquid cooling base plate, on which a first longitudinal DC groove and a second longitudinal DC groove are respectively located on both sides of a second direction, and a transverse DC groove connected to the end of the first longitudinal DC groove and the end of the second longitudinal DC groove, wherein the first longitudinal DC groove and the second longitudinal DC groove both extend along the first direction, and the transverse DC groove extends along the second direction, wherein the first direction is perpendicular to the second direction;

[0007] The outer cover plate is connected to the liquid-cooled base plate and covers the first longitudinal DC groove, the second longitudinal DC groove and the transverse DC groove to form a U-shaped water channel.

[0008] The radiator is installed in the U-shaped water channel.

[0009] Optionally, the heat sink includes:

[0010] The first linear heat dissipation part is disposed in the first longitudinal DC groove and is covered along the second direction.

[0011] The second linear heat dissipation section is disposed in the second longitudinal DC groove and is covered along the second direction.

[0012] Optionally, the first linear heat dissipation section has a first inclined side surface at the end facing the transverse DC slot;

[0013] The second linear heat dissipation section has a second inclined side surface at one end facing the horizontal DC slot;

[0014] The inner distance between the first inclined side and the second inclined side is less than the outer distance.

[0015] Optionally, a third linear heat dissipation unit is also provided in the U-shaped water channel, which is located in the transverse DC groove.

[0016] Optionally, the third linear heat dissipation section is spaced apart from the first linear heat dissipation section to form a first gap space;

[0017] Or / and,

[0018] The third linear heat dissipation section is spaced apart from the second linear heat dissipation section to form a second gap space.

[0019] Optionally, the third linear heat dissipation section is connected to both the first linear heat dissipation section and the second linear heat dissipation section;

[0020] The two ends of the third linear heat dissipation section in the second direction are respectively provided with chamfers, and the chamfers at both ends are respectively paired with the first inclined side and the second inclined side.

[0021] Optionally, the third linear heat dissipation section includes a first heat dissipation segment and a second heat dissipation segment, with two chamfers located on the first heat dissipation segment and the second heat dissipation segment, respectively;

[0022] The two opposing ends of the first and second heat dissipation sections are abutted together.

[0023] Optionally, the heat sink includes: an upper heat sink and a lower heat sink that are staggered, and a vertical plate that is connected between the upper heat sink and the lower heat sink respectively.

[0024] Optionally, an inlet guide groove and an outlet guide groove are provided on the liquid-cooled base plate;

[0025] The inlet guide channel is connected to the first longitudinal DC channel;

[0026] The outlet guide channel is connected to the second longitudinal DC channel.

[0027] On the other hand, this application also proposes an energy storage battery module, including: an energy storage battery assembly and an energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure as described above;

[0028] The energy storage battery module is connected to the energy storage battery liquid cooling plate.

[0029] Beneficial Effects: The U-shaped heat dissipation water channel structure of the energy storage battery liquid cooling plate and energy storage battery module of this application involves forming a first longitudinal DC groove and a second longitudinal DC groove located on both sides of a second direction on the liquid cooling base plate, and a transverse DC groove connecting the ends of the first longitudinal DC groove and the second longitudinal DC groove. The first longitudinal DC groove and the second longitudinal DC groove are both perpendicular to the transverse DC groove. When the outer cover plate is covered, the outer cover plate covers the first longitudinal DC groove, the second longitudinal DC groove, and the transverse DC groove to form a U-shaped water channel. A radiator is installed in the U-shaped water channel. During the flow of coolant in the liquid cooling base plate, it first passes through the first longitudinal DC groove, then turns through the transverse DC groove, and then turns again to enter the second longitudinal DC groove, so that the flow channel is set around the liquid cooling plate. Compared with the serpentine flow channel, not only is the turning angle smaller, but the number of bends is also significantly reduced. Furthermore, heat is dissipated by the radiator during the flow, and the radiator in the U-shaped water channel is equivalent to dividing the entire liquid cooling plate into multiple small flow channels. This allows the coolant within the entire liquid cooling plate to be dispersed throughout the plate, enabling the coolant to fully absorb heat and remove more heat, thus improving heat dissipation efficiency. Furthermore, the use of a radiator further increases the contact area with the coolant, thereby further enhancing heat dissipation efficiency and achieving high-performance heat dissipation from the liquid cooling plate. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a U-shaped heat dissipation water channel structure for an energy storage battery liquid cooling plate according to an embodiment of this application;

[0031] Figure 2 This is an exploded view of the first structure of a U-shaped heat dissipation water channel structure for an energy storage battery liquid cooling plate according to an embodiment of this application.

[0032] Figure 3 This is a schematic diagram of the first structure of a U-shaped heat dissipation water channel structure for an energy storage battery liquid cooling plate, with the outer cover plate removed, according to an embodiment of this application.

[0033] Figure 4 This is a schematic diagram of the second structure of a U-shaped heat dissipation water channel structure for an energy storage battery liquid cooling plate, with the outer cover plate removed, according to an embodiment of this application.

[0034] Figure 5 This is a schematic diagram of the second structure of a U-shaped heat dissipation water channel structure for an energy storage battery liquid cooling plate, with the outer cover plate removed, according to an embodiment of this application.

[0035] Figure 6 This is a schematic diagram showing another form of the second structure of a U-shaped heat dissipation water channel structure for a storage battery liquid cooling plate according to an embodiment of this application, with the outer cover plate removed.

[0036] Figure 7 for Figure 6 Enlarged view of point A.

[0037] In the figure: 100, liquid-cooled base plate; 110, first longitudinal DC channel; 120, second longitudinal DC channel; 130, transverse DC channel; 140, inlet guide channel; 150, outlet guide channel; 200, outer cover plate; 300, radiator; 301, upper heat sink; 302, lower heat sink; 303, vertical plate; 310, first straight heat dissipation section; 311, first inclined side; 320, second straight heat dissipation section; 321, second inclined side; 330, third straight heat dissipation section; 331, first partition space; 332, second partition space; 333, chamfer; 334, first heat dissipation segment; 335, second heat dissipation segment. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer and more explicit, the following detailed description of this application is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0039] Existing S-shaped flow channels (serpentine flow channels) not only result in large bending angles, typically requiring a 180° change, but also have numerous bends, leading to high flow resistance and reduced heat dissipation efficiency. Furthermore, the flow channel is generally integrally formed with the base plate through stamping / extrusion / machining / die casting. Limited by these forming processes, the flow channel is typically designed according to standards, resulting in a relatively regular shape, and the width of the flow channel formed on the base plate is difficult to adjust according to heat dissipation requirements. These factors contribute to uneven heat dissipation from the liquid cooling plate.

[0040] Example 1

[0041] like Figure 1 , Figure 2 , Figure 4As shown in the figure, this embodiment proposes a U-shaped heat dissipation water channel structure for energy storage battery liquid cooling plate, which can be used to dissipate heat from energy storage battery modules, thereby ensuring that the energy storage battery modules do not overheat during use, and ensuring the high performance and safety of the energy storage battery modules during use. This energy storage battery liquid cooling plate mainly includes: a liquid cooling base plate 100, an outer cover plate 200, and a heat sink 300. Typically, the liquid cooling base plate 100 adopts a generally square structure, such as a rectangle. The direction of the long side is taken as the first direction, and the direction of the wide side is taken as the second direction, and the first direction and the second direction are perpendicular to each other. For the convenience of structural description, the first direction is the front-to-back direction, and the second direction is the left-to-right direction. A first longitudinal DC groove 110 and a second longitudinal DC groove 120 are respectively opened on the left and right sides of the liquid cooling base plate 100, and a transverse DC groove 130 is opened on the rear side of the liquid cooling base plate 100. The transverse DC groove 130 connects to the rear end of the first longitudinal DC groove 110 and the rear end of the second longitudinal DC groove 120. Therefore, the first longitudinal DC channel 110 and the second longitudinal DC channel 120 both extend in the front-to-back direction, and the transverse DC channel 130 extends in the left-to-right direction. The three are connected to form a U-shaped channel structure. The outer cover plate 200 can also be a square cover plate. The outer cover plate 200 is detachably connected to the liquid cooling base plate 100. When the outer cover plate 200 is fixed to the liquid cooling base plate 100, it can cover the first longitudinal DC channel 110, the second longitudinal DC channel 120, and the transverse DC channel 130 to close the open side of the U-shaped channel and form a U-shaped water channel. The radiator 300 is set in the U-shaped water channel. The radiator 300 can adopt various structures. It is mainly used to divide the U-shaped water channel into multiple small channels arranged in a ring. The coolant flows through these small channels along the path from the first longitudinal DC channel 110 to the transverse DC channel 130 and then to the second longitudinal DC channel 120.

[0042] Therefore, in this embodiment, a U-shaped heat dissipation water channel structure for a battery liquid cooling plate has a first longitudinal DC channel 110 and a second longitudinal DC channel 120 located on both sides of a second direction on a liquid cooling base plate 100, and a transverse DC channel 130 connected to the ends of the first longitudinal DC channel 110 and the second longitudinal DC channel 120. The first longitudinal DC channel 110 and the second longitudinal DC channel 120 are perpendicular to the transverse DC channel 130. When the outer cover plate 200 is placed on top, it covers the first longitudinal DC channel 110, the second longitudinal DC channel 120, and the transverse DC channel 130 to form a U-shaped water channel. A radiator 300 is installed in the U-shaped water channel. During the flow of coolant within the liquid cooling base plate 100, it first passes through the first longitudinal DC channel 110, then turns through the transverse DC channel 130, and then turns again to enter the second longitudinal DC channel 120, so that the flow channel is arranged around the liquid cooling plate. Compared with a serpentine flow channel, not only is the turning angle smaller, but the number of bends is also significantly reduced. Furthermore, the coolant is dissipated through the radiator 300 during the flow path. The radiator 300, within the U-shaped water channel, effectively divides the liquid cooling plate into multiple small channels surrounding it. This disperses the coolant throughout the liquid cooling plate, allowing it to fully absorb heat and remove more heat, thus improving heat dissipation efficiency. The radiator 300 further increases the contact area with the coolant, further enhancing heat dissipation efficiency and achieving high-performance heat dissipation for the liquid cooling plate. Moreover, since the radiator 300 in this embodiment is installed within the U-shaped water channel, during the formation of the liquid cooling plate's flow path, only the larger first longitudinal direct current channel 110, second longitudinal direct current channel 120, and transverse direct current channel 130 need to be produced. Installing the radiator 300 then forms the required flow path structure, improving assembly efficiency. The radiator 300 can be manufactured using extrusion or stamping processes, resulting in high production efficiency and simplifying the overall manufacturing process of the liquid cooling plate, making it more practical. The radiator 300 is manufactured separately and its specifications can be adjusted according to actual heat dissipation needs. By installing radiators 300 of different specifications into the U-shaped water channel, adjustments can be made according to actual heat dissipation requirements. After adjustment, the radiator can ensure uniform heat dissipation from the liquid cooling plate.

[0043] like Figure 2 , Figure 3 , Figure 4As shown, the radiator 300 in this embodiment further includes a first linear heat dissipation section 310 and a second linear heat dissipation section 320. The radiator 300 may include multiple parts, which facilitates assembly according to the shape of the flow channel. The first linear heat dissipation section 310 is disposed within the first longitudinal DC channel 110 and fills the first longitudinal DC channel 110 along the second direction. The second linear heat dissipation section 320 is disposed within the second longitudinal DC channel 120 and fills the second longitudinal DC channel 120 along the second direction. The radiator 300 has high thermal conductivity. Through the high thermal conductivity of the radiator 300, it is beneficial to conduct as much heat from the energy storage battery assembly as possible to the coolant, thereby facilitating heat dissipation. Moreover, the radiator 300 divides the U-shaped water channel into multiple small flow channels arranged in a circumferential manner. The coolant flows through these small flow channels along the path from the first longitudinal DC channel 110 to the transverse DC channel 130 and then to the second longitudinal DC channel 120. This effectively increases the heat conduction area of ​​the coolant in the flow channel, thereby achieving more efficient heat dissipation.

[0044] like Figure 2 , Figure 3 As shown, in the first structural configuration, no other heat dissipation components are provided between the end of the first linear heat dissipation section 310 and the end of the second linear heat dissipation section 320, leaving the transverse DC channel 130 empty. The coolant, after being guided by the first linear heat dissipation section 310, can mix within the transverse DC channel 130, making the heat of the mixed coolant more uniform. The uniformly heated coolant then flows into the second linear heat dissipation section 320, thus making the heat dissipation in the area covered by the second linear heat dissipation section 320 more uniform, avoiding local overheating that could lead to local battery safety issues.

[0045] like Figure 2 , Figure 3 As shown, further, based on the first structure, the first linear heat dissipation section 310 has a first inclined side surface 311 at one end facing the transverse DC channel 130; the second linear heat dissipation section 320 has a second inclined side surface 321 at one end facing the transverse DC channel 130; the inner distance between the first inclined side surface 311 and the second inclined side surface 321 is smaller than the outer distance. That is, the rear ends of the first linear heat dissipation section 310 and the second linear heat dissipation section 320, which are spaced apart in the left-right direction, guide the flow of coolant by setting inclined sides. Since the first inclined side surface 311 and the second inclined side surface 321 form a funnel shape, the outermost flow channel of the first linear heat dissipation section 310 or the second linear heat dissipation section 320 can guide the coolant to the outer area of ​​the first longitudinal DC channel 110 or the second longitudinal DC channel 120. In this way, all parts in the cooling area can be covered by coolant, and the outer area of ​​the liquid cooling base plate 100 can also be well covered and cooled, ensuring the stability of heat dissipation.

[0046] like Figure 4 , Figure 5 As shown, in the second structural configuration, a third linear heat dissipation section 330 is further provided in the U-shaped water channel, and the third linear heat dissipation section 330 is disposed in the transverse direct current groove 130. The third linear heat dissipation section 330 is spaced apart from the first linear heat dissipation section 310 to form a first interval space 331. Or / and, the third linear heat dissipation section 330 is spaced apart from the second linear heat dissipation section 320 to form a second interval space 332. In this way, the third linear heat dissipation section 330 can achieve mixed flow while ensuring the presence of either the first interval space 331 or the second interval space 332, and can also increase the heat dissipation area during the transverse flow of the coolant, thereby improving heat dissipation efficiency.

[0047] like Figure 4 , Figure 5 As shown, based on the second structure, the first linear heat dissipation section 310 has a first inclined side surface 311 at one end facing the transverse DC groove 130; the second linear heat dissipation section 320 has a second inclined side surface 321 at one end facing the transverse DC groove 130; the inner distance between the first inclined side surface 311 and the second inclined side surface 321 is smaller than the outer distance. Similarly, by employing the first inclined side surface 311 and the second inclined side surface 321, the coverage of each area by the coolant is enhanced, thereby improving heat dissipation performance.

[0048] like Figure 4 , Figure 5 As shown, the third linear heat dissipation section 330 has chamfers 333 at both ends in the second direction. One or both of the chamfers 333 are spaced apart from the first inclined side 311 or the second inclined side 321. The inclination direction of the chamfers 333 can be consistent with the inclination direction of the first inclined side 311 or the second inclined side 321, thus achieving the guidance of coolant flow through the chamfers 333 at both ends. Even after achieving the function of mixing the coolant, the coolant can still maintain stable conduction.

[0049] like Figure 4 , Figure 6 As shown, in the second structural configuration, the third linear heat dissipation section 330 can also be connected to both the first linear heat dissipation section 310 and the second linear heat dissipation section 320. The chamfers 333 at both ends of the third linear heat dissipation section 330 in the second direction are respectively paired with the first inclined side surface 311 and the second inclined side surface 321. This allows each small flow channel in the radiator 300 to form a complete flow guiding structure. Although the coolant cannot mix within the transverse direct current groove 130, the increased extension length of the third linear heat dissipation section 330 also enhances the heat dissipation effect, thereby solving the technical problem.

[0050] like Figure 4 , Figure 6 As shown, the third linear heat dissipation section 330 in this embodiment includes a first heat dissipation segment 334 and a second heat dissipation segment 335. Two chamfers 333 are respectively located on the first heat dissipation segment 334 and the second heat dissipation segment 335, and the two opposing ends of the first heat dissipation segment 334 and the second heat dissipation segment 335 are abutted together. Dividing the third linear heat dissipation section 330 into two segments facilitates production and assembly. Although the first heat dissipation segment 334 and the second heat dissipation segment 335 are symmetrical structures during installation, they can be produced as a single component, and their orientation can be adjusted during assembly. Assembly only requires splicing, simplifying the assembly process and improving production efficiency.

[0051] like Figure 6 , Figure 7 As shown, the radiator 300 in this embodiment further includes: an upper heat sink 301 and a lower heat sink 302 staggered together, and vertical plates 303 connected between the upper heat sink 301 and the lower heat sink 302. For example, the structure of the first linear heat dissipation section 310 is as follows: in the second direction, one end of the lower heat sink 302 is vertically fixed to the vertical plate 303, the upper end of the vertical plate 303 is connected to the upper heat sink 301, one end of the upper heat sink 301 is vertically connected to the vertical plate 303, and the lower end of the vertical plate 303 is connected to the lower heat sink 302, and so on, forming a long plate structure. This structure can be formed by stamping. In this way, small flow channels can be formed between each vertical plate 303, increasing the contact area of ​​the coolant and promoting heat dissipation.

[0052] It is easy to imagine that the radiator 300 can also adopt other traditional heat dissipation structures, which can also solve technical problems and achieve the technical effect of promoting heat dissipation.

[0053] like Figure 2 , Figure 4 As shown, in this embodiment, the liquid-cooled base plate 100 is provided with an inlet guide channel 140 and an outlet guide channel 150. The inlet guide channel 140 is connected to the first longitudinal DC channel 110, and the outlet guide channel 150 is connected to the second longitudinal DC channel 120. The inlet guide channel 140 and the outlet guide channel 150 can be arranged on the same side of the liquid-cooled base plate 100, for example, both on the front side. This facilitates the installation of external coolant connection pipes and enables efficient assembly of energy storage battery modules in new energy vehicles and other electrical appliances.

[0054] Example 2

[0055] This second embodiment proposes an energy storage battery module that can be applied to various electrical devices, such as new energy vehicles. The energy storage battery module includes: an energy storage battery assembly and an energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure as described above; the energy storage battery assembly is connected to the energy storage battery liquid cooling plate.

[0056] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A liquid cooling plate for an energy storage battery with a U-shaped heat dissipation water channel structure, characterized in that, include: A liquid-cooled base plate is provided with a first longitudinal DC groove and a second longitudinal DC groove located on both sides of a second direction, and a transverse DC groove connected to the ends of the first longitudinal DC groove and the second longitudinal DC groove. The first longitudinal DC groove and the second longitudinal DC groove both extend along a first direction, and the transverse DC groove extends along a second direction, wherein the first direction is perpendicular to the second direction. An outer cover plate is connected to the liquid-cooled base plate and covers the first longitudinal DC groove, the second longitudinal DC groove, and the transverse DC groove to form a U-shaped water channel. A radiator is disposed in the U-shaped water channel.

2. The energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure according to claim 1, characterized in that, The heat sink includes: The first linear heat dissipation part is disposed in the first longitudinal DC groove and is spread throughout the first longitudinal DC groove along the second direction. The second linear heat dissipation part is disposed in the second longitudinal DC groove and is spread throughout the second longitudinal DC groove along the second direction.

3. The energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure according to claim 2, characterized in that, The first linear heat dissipation part has a first inclined side surface at one end facing the transverse DC groove; The second linear heat dissipation section has a second inclined side surface at one end facing the transverse DC slot; The inner distance between the first inclined side and the second inclined side is less than the outer distance.

4. The energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure according to claim 3, characterized in that, The U-shaped water channel is also provided with a third linear heat dissipation unit, which is located in the transverse DC groove.

5. The energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure according to claim 4, characterized in that, The third linear heat dissipation section is spaced apart from the first linear heat dissipation section to form a first interval space; Or / and, The third linear heat dissipation section is spaced apart from the second linear heat dissipation section to form a second gap space.

6. The energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure according to claim 4, characterized in that, The third linear heat dissipation section is connected to both the first linear heat dissipation section and the second linear heat dissipation section; The third linear heat dissipation section has chamfers at both ends in the second direction, and the chamfers at both ends are respectively paired with the first inclined side and the second inclined side.

7. The energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure according to claim 6, characterized in that, The third linear heat dissipation section includes a first heat dissipation segment and a second heat dissipation segment, and the two chamfers are respectively located on the first heat dissipation segment and the second heat dissipation segment; The two ends of the first heat dissipation segment and the second heat dissipation segment are abutted together.

8. The energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure according to any one of claims 1-7, characterized in that, The radiator includes: an upper heat sink and a lower heat sink arranged in a staggered manner, and a vertical plate connected between the upper heat sink and the lower heat sink respectively.

9. The energy storage battery liquid cooling plate with a U-shaped heat dissipation water channel structure according to any one of claims 1-7, characterized in that, The liquid-cooled base plate is provided with an inlet guide groove and an outlet guide groove; The inlet guide channel is connected to the first longitudinal DC channel; The outlet guide channel is connected to the second longitudinal DC channel.

10. An energy storage battery module, characterized in that, include: Energy storage battery assembly and energy storage battery liquid cooling plate with U-shaped heat dissipation water channel structure as described in any one of claims 1-9; The energy storage battery assembly is connected to the energy storage battery liquid cooling plate.

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