Energy storage battery liquid cooling plate with folded heat dissipation waterway and energy storage battery module

Abstract

The utility model provides an energy storage battery liquid cooling plate and an energy storage battery module of a folding type heat dissipation waterway, and the energy storage battery liquid cooling plate comprises a liquid cooling bottom plate which is provided with a diversion trench, and the diversion trench is provided with an opening and a trench bottom surface which are respectively located at two ends of a first direction; the flow guide division bar is arranged on the liquid cooling bottom plate, is located in the flow guide groove and extends in the first direction, the opening is divided into a liquid inlet and a liquid outlet by the flow guide division bar, the flow guide groove is divided into a water inlet guide groove and a water outlet guide groove by the flow guide division bar, and one end, far away from the opening, of the flow guide division bar and the groove bottom surface are arranged at an interval to form a communication port; the outer cover plate is connected to the liquid cooling bottom plate and covers the diversion trench; and the radiator is arranged in the water inlet guide groove and the water outlet guide groove. The problems that in the prior art, the design size of a stamping bottom plate body is limited, the machining size precision is difficult to guarantee, the machining cost is high, and the overall assembly production efficiency is low are solved.

Description

Technical Field

[0001] This application relates to the field of new energy battery technology, and in particular to a folded heat dissipation water channel liquid cooling plate 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, grooves for the cooling medium to flow through are typically cut into the base plate to form multiple spaced flow channels. During the manufacturing process, different concave and convex structures need to be machined into the base plate, such as by stamping. However, the base plate is subjected to considerable extrusion pressure during stamping, which makes it prone to dimensional deformation, especially making it difficult to guarantee dimensional and positional tolerances, such as surface flatness. This requires leveling before welding the upper and lower plates, increasing assembly steps and affecting production efficiency. At the same time, the flow channels cannot be made too narrow due to the limitations of the stamping process and plate thickness, otherwise there is a risk of breakage or higher tonnage equipment is required, which places higher demands on equipment and molds, increases processing costs, and reduces overall production 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 liquid cooling plate for energy storage batteries with a folded heat dissipation water channel, which solves the problems of limited flow channel design size, poor dimensional accuracy, and low overall production efficiency of the stamped base plate body in the prior art.

[0006] On the one hand, this application provides a folded heat dissipation water channel for a storage battery liquid cooling plate, including: a liquid cooling base plate, on which a guide groove is formed, the guide groove having an open opening at both ends in a first direction and a bottom surface of the groove;

[0007] A flow guide bar is set on the liquid-cooled base plate and extends along the first direction within the flow guide groove. The flow guide bar divides the open opening into a liquid inlet and a liquid outlet, and divides the flow guide groove into a water inlet guide groove and a water outlet guide groove. The end of the flow guide bar away from the open opening is spaced apart from the bottom surface of the groove to form a communication port.

[0008] The outer cover plate is connected to the liquid-cooled base plate and covers the flow channel;

[0009] The radiator is installed in the inlet guide channel and the outlet guide channel.

[0010] Optionally, the flow guide channel is a square channel, and the flow guide strip is located on the center line of the second direction of the square channel.

[0011] Optionally, a snap-fit ​​groove is provided on the side wall of the liquid-cooled base plate;

[0012] The flow guide bar includes a locking block and a stop block. The locking block is used to engage with the locking groove, and the stop block is connected to the locking block and extends from the opening toward the bottom of the groove in a first direction.

[0013] Optionally, the heat sink includes:

[0014] The first linear heat dissipation section is disposed inside the water inlet guide groove;

[0015] The second linear heat dissipation section is located inside the water outlet guide groove;

[0016] A buffer space is formed between the end of the first linear heat dissipation section facing the bottom of the slot and the end of the second linear heat dissipation section facing the bottom of the slot.

[0017] Optionally, the end of the first linear heat dissipation section facing the bottom of the slot is provided with a first inclined side surface;

[0018] The second linear heat dissipation section has a second inclined side surface at one end facing the bottom of the slot;

[0019] The inner distance between the first inclined side and the second inclined side is less than the outer distance.

[0020] Optionally, both the first and second inclined sides extend to the end of the flow guide strip.

[0021] Optionally, an open folding flow channel is provided at the liquid inlet, which is used to change the direction of the coolant flow at the liquid inlet.

[0022] Optionally, the open folded flow channel includes: a liquid inlet guide channel, which is used to guide the coolant entering the liquid-cooled base plate;

[0023] The first directional channel extends along a first direction, and the first end of the first directional channel is connected to the end of the liquid inlet guide channel.

[0024] The second directional channel extends along the first direction, with its first end connected to the end of the first directional channel and its end connected to the inlet guide channel.

[0025] Optionally, a third linear heat dissipation part is provided in the first deflection slot, and a fourth linear heat dissipation part is provided in the second deflection slot.

[0026] 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 folded heat dissipation water channel as described above;

[0027] The energy storage battery module is connected to the energy storage battery liquid cooling plate.

[0028] Beneficial Effects: This application discloses a folded-type heat dissipation water channel for a battery liquid cooling plate. By creating a guide channel on the liquid cooling base plate and installing guide strips within the guide channel, the channel is divided into an inlet guide channel and an outlet guide channel, resulting in an overall folded (U-shaped) flow path. During heat dissipation, the coolant enters from the inlet guide channel and flows through the outlet guide channel, forming a bend in the water path. Compared to traditional S-shaped or serpentine water paths, this water path structure effectively reduces the number of bends, resulting in lower flow resistance and higher heat transfer efficiency. Furthermore, radiators are directly installed in the inlet and outlet guide channels. The radiators are pre-fabricated, and the spacing of the heat dissipation teeth can be flexibly designed according to requirements, offering greater design freedom. The radiators are directly housed in the inlet and outlet guide channels and are integrated with the base plate and cover plate through welding or bonding. The pre-processed heat sink is externally machined before the liquid cooling plate of the energy storage battery is assembled, thus eliminating the need for sheet metal or stamping to create flow channels on the liquid cooling base plate. This reduces the number of machining steps on the liquid cooling base plate and eliminates the need for stamping dies, lowering processing costs. Furthermore, the liquid cooling base plate does not need to be leveled before assembly, reducing assembly steps. In summary, the folded heat dissipation channel liquid cooling plate for energy storage batteries in this application achieves efficient cooling while reducing production costs and improving production efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a folded heat dissipation water channel liquid cooling plate for an energy storage battery according to an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the internal structure of a liquid cooling plate for an energy storage battery according to an embodiment of this application;

[0031] Figure 3 for Figure 2 Enlarged view of point A;

[0032] Figure 4 This is an exploded view of a liquid cooling plate for an energy storage battery with a folded heat dissipation water channel according to an embodiment of this application.

[0033] Figure 5 This is an exploded view of the liquid cooling base plate of a folded heat dissipation water channel for an energy storage battery according to an embodiment of this application.

[0034] In the diagram: 100, liquid-cooled base plate; 110, side plate; 111, snap-fit ​​groove; 112, flat bottom plate; 120, U-shaped water baffle frame; 130, flow guide channel; 131, open opening; 132, bottom surface of the tank; 133, water inlet guide channel; 134, water outlet guide channel; 135, liquid inlet; 136, liquid outlet; 140, connecting port; 150, buffer space; 160, open folded flow channel; 161, liquid inlet guide channel; 162, first... 163. Second directional groove; 200. Flow guide bar; 210. Locking block; 220. Stop block; 300. Outer cover plate; 400. Radiator; 401. Upper heat dissipation plate; 402. Vertical plate; 403. Lower heat dissipation plate; 410. First linear heat dissipation section; 411. First inclined side; 420. Second linear heat dissipation section; 421. Second inclined side; 430. Third linear heat dissipation section; 440. Fourth linear heat dissipation section. Detailed Implementation

[0035] 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.

[0036] Example 1

[0037] like Figure 1 , Figure 2 , Figure 4 As shown in the figure, this embodiment proposes a folded heat dissipation water channel liquid cooling plate for energy storage batteries, 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, a flow guiding strip 200, an outer cover plate 300, and a heat sink 400. 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, with the first direction perpendicular to the second direction. For ease of structural description, the first direction is the front-to-back direction, and the second direction is the left-to-right direction. A flow guiding groove 130 is provided on the liquid cooling base plate 100, and the flow guiding groove 130 has an open opening 131 located at both ends of the first direction and a groove bottom surface 132. Figure 5As shown, in the specific structure, the liquid-cooled base plate 100 can be formed by splicing and assembly. Baffle plates 110 are fixed (welded, screwed or riveted) at the four edges of the flat base plate 112. The baffle plates 110 on the front and rear sides and the baffle plates 110 on the left and right sides form a chamber for the flow of coolant. A U-shaped baffle frame 120 is set in the middle position of the chamber in the left and right direction. The U-shaped baffle frame 120 can also be fixed to the flat base plate 112 by welding, screwing or riveting. In this way, the U-shaped baffle frame 120 forms a guide channel 130. The opening of the U-shaped baffle frame 120 faces the front baffle plate 110 and can form a gap with the baffle plate 110, thereby forming the opening 131 of the guide channel 130. The inner bottom surface of the U-shaped baffle frame 120 forms the bottom surface 132 of the channel. Since the edge baffles 110 and U-shaped water baffles 120 at the four edges are all machined parts, they are then installed on the flat bottom plate 112 to form the liquid-cooled bottom plate 100. This cavity structure does not require excessive machining of the liquid-cooled bottom plate 100, especially not sheet metal or stamping of the flow channels, thus ensuring the assembly accuracy and dimensional tolerances of the liquid-cooled bottom plate 100. A flow guide strip 200 is disposed on the liquid-cooled bottom plate 100 and extends along the first direction within the flow guide groove 130. The flow guide strip 200 divides the open opening 131 into an inlet 135 and an outlet 136, and divides the flow guide groove 130 into an inlet guide groove 133 and an outlet guide groove 134. The end of the flow guide strip 200 away from the open opening 131 is spaced apart from the bottom surface 132 of the groove to form a connecting opening 140. In the specific structure, a guide strip 200 forms an inlet guide channel 133 and an outlet guide channel 134 in the inner cavity. Coolant can enter through the inlet guide channel 133 and then pass through the outlet guide channel 134, thus forming a folded water channel and increasing the coolant flow path. An outer cover plate 300 is connected to the liquid cooling base plate 100 and covers the guide channel 130; the radiator 400 is disposed in the inlet guide channel 133 and the outlet guide channel 134. In the specific structure, the outer cover plate 300 can also be a square cover plate. The outer cover plate 300 is detachably connected to the liquid cooling base plate 100. When the outer cover plate 300 is fixed to the liquid cooling base plate 100, it can cover the inlet guide channel 133 and the outlet guide channel 134 to close the open side of the guide channel 130 on the liquid cooling base plate 100, thus forming a folded heat dissipation water channel. The radiator 400 is detachably installed in the folded cooling water channel. The radiator 400 can adopt various structures. It is mainly used to divide the folded cooling water channel into multiple small channels arranged around it. The coolant flows through these small channels along the path from the inlet guide channel 133 to the outlet guide channel 134.

[0038] This embodiment of a folded-type heat dissipation water channel for a battery liquid cooling plate forms a folded-type heat dissipation water channel by creating a guide channel 130 on the liquid cooling base plate 100 and closing the open side of the guide channel 130 on the liquid cooling base plate 100 with an outer cover plate 300. A guide strip 200 is installed inside the guide channel 130, dividing it into an inlet guide channel 133 and an outlet guide channel 134. During heat dissipation, the coolant can enter from the inlet guide channel 133 and then pass through the outlet guide channel 134, thus forming a folded water channel (similar to a U-shape). During heat dissipation, the coolant can enter from the inlet guide channel and then pass through the outlet guide channel, thus forming a water channel with a bend. Compared to traditional S-shaped or serpentine water channels, this water channel structure effectively reduces the number of bends, has lower flow resistance, and higher heat transfer efficiency. Furthermore, the radiator 400 is directly installed in the inlet guide channel 133 and the outlet guide channel 134. The radiator 400 is pre-processed, and the spacing of the heat dissipation teeth can be flexibly designed according to design requirements, allowing for greater design freedom. The radiator is directly housed in the inlet guide channel 133 and the outlet guide channel 134 and is integrated with the base plate and cover plate by welding or bonding. The pre-processed radiator 400 is externally processed before the assembly of the energy storage battery liquid cooling plate, thus eliminating the need for sheet metal or stamping processing of the flow channels on the liquid cooling base plate 100. This reduces the number of machining steps on the liquid cooling base plate 100 and eliminates the need for stamping dies, thereby reducing processing costs. During the installation of the radiator 400, virtually no additional shaping is required, saving assembly time and improving assembly efficiency while achieving efficient cooling. Therefore, the energy storage battery liquid cooling plate with the folded cooling water channel in this embodiment achieves efficient cooling while reducing production costs and improving production efficiency.

[0039] like Figure 2 , Figure 3 As shown, the radiator 400 in this embodiment further includes: an upper heat sink 401 and a lower heat sink 403 staggered together, and vertical plates 402 connected between the upper heat sink 401 and the lower heat sink 403 respectively. For example, the structure of the first linear heat dissipation section 410 is as follows: in the second direction, one end of the lower heat sink 403 is vertically fixed to the vertical plate 402, the upper end of the vertical plate 402 is connected to the upper heat sink 401, one end of the upper heat sink 401 is vertically connected to the vertical plate 402, and the lower end of the vertical plate 402 is connected to the lower heat sink 403, and this arrangement is repeated continuously to form a long wall structure. This structure can be formed by stamping. Since the radiator 400 is pre-manufactured separately before the assembly of the liquid cooling plate of this energy storage battery, its direct use of stamping can improve production efficiency. When the radiator 400 is assembled onto the liquid cooling base plate 100, small flow channels can be formed between each vertical plate 402, increasing the contact area of ​​the coolant and promoting heat dissipation. It is easy to imagine that the radiator 400 can also adopt other traditional heat dissipation structures, which can also solve technical problems and achieve the technical effect of promoting heat dissipation.

[0040] like Figure 2 , Figure 4 , Figure 5 As shown, in this embodiment, the flow guide trough 130 is a square trough, and the flow guide baffle 200 is located on the center line of the second direction of the square trough. The flow guide trough 130 is distinguished by the flow guide baffle 200, and the two troughs are connected only at the rear end of the flow guide baffle 200. A simple structure is used to achieve the folded flow of coolant, thereby improving the heat dissipation effect.

[0041] like Figure 2 , Figure 4 , Figure 5 As shown, in this embodiment, a snap-fit ​​groove 111 is further provided on the side wall of the liquid-cooled base plate 100. The flow guide strip 200 includes a snap-fit ​​block 210 and a stop block 220. The snap-fit ​​block 210 is used to snap into the snap-fit ​​groove 111, and the stop block 220 is connected to the snap-fit ​​block 210 and extends from the open opening 131 toward the bottom surface 132 of the groove along the first direction. In the specific structure, the snap-fit ​​groove 111 is provided on the inner wall of the baffle plate 110 at the front end of the liquid-cooled base plate 100, so that the flow guide strip 200 can be fixed to the liquid-cooled base plate 100 by the snap-fit ​​block 210. This facilitates the docking and assembly of the flow guide strip 200 and the liquid-cooled base plate 100, avoiding the problem of increasing the processing steps by directly machining the flow guide strip 200 on the liquid-cooled base plate 100, which is beneficial to reducing costs and improving production efficiency.

[0042] like Figure 2 , Figure 4 As shown, in this embodiment, the radiator 400 specifically includes a first linear heat dissipation section 410 and a second linear heat dissipation section 420. The radiator 400 may include multiple parts, which facilitates assembly according to the shape of the flow channels. The first linear heat dissipation section 410 is disposed in the inlet guide channel 133 and fills the inlet guide channel 133 along the second direction. The second linear heat dissipation section 420 is disposed in the outlet guide channel 134 and fills the outlet guide channel 134 along the second direction. The radiator 400 has high thermal conductivity. Through the high thermal conductivity of the radiator 400, 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 400 divides the inlet guide channel 133 and the outlet guide channel 134 into multiple small flow channels arranged around it. The coolant flows through these small flow channels along the path from the inlet guide channel 133 to the outlet guide channel 134. This effectively increases the heat conduction area of ​​the coolant in the flow channels, thereby achieving more efficient heat dissipation.

[0043] like Figure 2 , Figure 4As shown, a buffer space 150 is formed between the end of the first linear heat dissipation section 410 facing the bottom surface 132 of the tank and the end of the second linear heat dissipation section 420 facing the bottom surface 132 of the tank. In the specific structure, no other heat dissipation components are provided between the rear end of the first linear heat dissipation section 410 and the rear end of the second linear heat dissipation section 420, so that the rear end of the water inlet guide channel 133 and the rear end of the water outlet guide channel 134 form an empty mixing space. The coolant after being guided by the first linear heat dissipation section 410 can mix in the mixing space, so that the heat of the mixed coolant is more uniform. The coolant with uniform temperature then flows into the second linear heat dissipation section 420. In this way, the heat dissipation of the area covered by the second linear heat dissipation section 420 is more uniform, avoiding local overheating and causing local battery safety problems.

[0044] like Figure 2 , Figure 4 As shown, in this embodiment, the first linear heat dissipation section 410 has a first inclined side surface 411 at one end facing the bottom surface 132 of the tank, and the second linear heat dissipation section 420 has a second inclined side surface 421 at one end facing the bottom surface 132 of the tank. The inner distance between the first inclined side surface 411 and the second inclined side surface 421 is smaller than the outer distance. That is, the rear ends of the first linear heat dissipation section 410 and the second linear heat dissipation section 420, which are spaced apart in the left-right direction, guide the flow of coolant by providing inclined side surfaces. Since the first inclined side surface 411 and the second inclined side surface 421 form a funnel shape, the outermost flow channel of the first linear heat dissipation section 410 or the second linear heat dissipation section 420 can guide the coolant to the outer area of ​​the inlet guide channel 133 or the outlet guide channel 134. 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 dissipated, ensuring heat dissipation stability.

[0045] like Figure 2 , Figure 4 As shown, furthermore, both the first inclined side 411 and the second inclined side 421 extend to the end of the flow guide bar 200. This allows the innermost flow channels of the closest adjacent first linear heat dissipation section 410 and second linear heat dissipation section 420 to be unobstructed by the end of the flow guide bar 200, resulting in a smoother flow of coolant and more thorough mixing of coolant temperatures in each flow channel.

[0046] like Figure 2 , Figure 4As shown, an open folded flow channel 160 is further provided at the liquid inlet 135, which is used to change the direction of coolant flow at the liquid inlet 135. By setting the open folded flow channel 160, the flow channel of the liquid inlet 135 is folded and lengthened, and the coolant dissipates heat more fully at the liquid inlet 135. Since the coolant temperature at the liquid inlet 135 is relatively low, and the parts of the energy storage battery assembly with relatively high heat generation are correspondingly located in the area of ​​the liquid inlet 135, it can be ensured that the areas with high heat generation are dissipated in a timely manner. Therefore, by using the open folded flow channel 160, the areas with high heat generation can be dissipated sufficiently, ensuring a more uniform heat dissipation process for the entire liquid cooling plate.

[0047] like Figure 2 , Figure 4 As shown, the open folded flow channel 160 in this embodiment further includes: an inlet guide channel 161, a first deflection channel 162, and a second deflection channel 163. The inlet guide channel 161 is used to guide the coolant entering the liquid-cooled base plate 100. The first deflection channel 162 extends along a first direction, and the first end of the first deflection channel 162 is connected to the end of the inlet guide channel 161. The second deflection channel 163 extends along the first direction, and the first end of the second deflection channel 163 is connected to the end of the first deflection channel 162. The end of the second deflection channel 163 is connected to the water inlet guide channel 133. The coolant is guided by the inlet guide channel 161, where its flow can be redirected. The coolant then flows from back to front in the first redirection channel 162, and then from front to back in the second redirection channel 163. This multiple redirection of the coolant flow at the inlet ensures effective heat dissipation in areas with high heat generation.

[0048] like Figure 2 , Figure 4 As shown, a third linear heat dissipation section 430 is further provided in the first deflection groove 162, and a fourth linear heat dissipation section 440 is provided in the second deflection groove 163. Utilizing the high thermal conductivity of the heat sink 400, the heat on the energy storage battery assembly is transferred to the coolant as much as possible, thus facilitating heat dissipation.

[0049] Example 2

[0050] This second embodiment proposes an energy storage battery module, including: an energy storage battery assembly and an energy storage battery liquid cooling plate with a folded heat dissipation water channel as described above; the energy storage battery assembly is connected to the energy storage battery liquid cooling plate.

[0051] 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 folded heat dissipation water channel, characterized in that, include: A liquid-cooled base plate, wherein a flow guide groove is formed on the liquid-cooled base plate, and the flow guide groove has an open opening at both ends in a first direction and a bottom surface of the groove; A flow guide bar is disposed on the liquid-cooled base plate and extends along a first direction within the flow guide groove. The flow guide bar divides the open opening into a liquid inlet and a liquid outlet, and the flow guide groove into a water inlet guide groove and a water outlet guide groove. The end of the flow guide bar away from the open opening is spaced apart from the bottom surface of the groove to form a communication port. An outer cover plate, which is connected to the liquid-cooled base plate and covers the flow channel; A radiator is disposed in the inlet guide channel and the outlet guide channel.

2. The energy storage battery liquid cooling plate with a folded heat dissipation water channel according to claim 1, characterized in that, The flow guide channel is a square channel, and the flow guide strip is located on the center line of the second direction of the square channel.

3. The energy storage battery liquid cooling plate with a folded heat dissipation water channel according to claim 2, characterized in that, The liquid-cooled base plate has a snap-fit ​​groove on its side wall; The flow guide bar includes a locking block and a stop block. The locking block is used to engage with the locking groove, and the stop block is connected to the locking block and extends from the opening toward the bottom surface of the groove in a first direction.

4. The energy storage battery liquid cooling plate with a folded heat dissipation water channel according to claim 1, characterized in that, The heat sink includes: The first linear heat dissipation part is disposed in the water inlet guide groove; The second linear heat dissipation section is disposed in the water outlet guide groove; A buffer space is formed between the end of the first linear heat dissipation part facing the bottom of the slot and the end of the second linear heat dissipation part facing the bottom of the slot.

5. The energy storage battery liquid cooling plate with a folded heat dissipation water channel according to claim 4, characterized in that, The first linear heat dissipation part has a first inclined side surface at one end facing the bottom of the groove; The second linear heat dissipation section has a second inclined side surface at one end facing the bottom of the groove; The inner distance between the first inclined side and the second inclined side is less than the outer distance.

6. The energy storage battery liquid cooling plate with a folded heat dissipation water channel according to claim 5, characterized in that, Both the first inclined side and the second inclined side extend to the end of the flow guide bar.

7. The energy storage battery liquid cooling plate with a folded heat dissipation water channel according to any one of claims 1-6, characterized in that, An open folded flow channel is provided at the liquid inlet, which is used to change the direction of the coolant flow at the liquid inlet.

8. The energy storage battery liquid cooling plate with a folded heat dissipation water channel according to claim 7, characterized in that, The open folded flow channel includes: a liquid inlet guide channel, which is used to guide the coolant entering the liquid-cooled base plate; The first deflection channel extends along a first direction, and the first end of the first deflection channel is connected to the end of the liquid inlet guide channel. The second directional channel extends along the first direction, with its first end connected to the end of the first directional channel and its end connected to the inlet guide channel.

9. The energy storage battery liquid cooling plate with a folded heat dissipation water channel according to claim 8, characterized in that, The first deflection slot is provided with a third linear heat dissipation part, and the second deflection slot is provided with a fourth linear heat dissipation part.

10. An energy storage battery module, characterized in that, include: Energy storage battery assembly and energy storage battery liquid cooling plate with folded heat dissipation water channel 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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