Bent transition structure of heat dissipation waterway and energy storage battery liquid cooling plate

Abstract

The utility model provides a bent part transition structure of a heat dissipation water path and an energy storage battery liquid cooling plate, which are used for being arranged in a corner area at the joint of a water inlet direct-flow groove and a water outlet direct-flow groove, a plurality of heat dissipation water inlet direct-flow channels are arranged in the water inlet direct-flow groove, and a plurality of heat dissipation water outlet direct-flow channels are arranged in the water outlet direct-flow groove. The bent part transition structure comprises a first corner heat dissipation block which is arranged in the corner area and is provided with a first flow guide face and a second flow guide face which are perpendicular to each other so as to form an outer side single flow channel; and the second corner heat dissipation block is arranged in the corner area and is provided with a second arc-shaped inner flow guide surface so as to form an inner side single flow channel. The problem that in the prior art, water cannot enter a single flow channel on the outermost side easily, and consequently water flow distribution of partial areas on the outermost side is uneven is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy battery, more particularly, to a transition structure of a bending part of a heat dissipation waterway and a liquid cooling plate of an energy storage battery. BACKGROUND

[0002] The energy storage battery is an important component of various outdoor electrical equipment, such as electric vehicles. The high-voltage power battery will emit a large amount of heat energy in the working state. Therefore, a good heat dissipation system is an important system for ensuring the charging and discharging performance and service life of the power battery. In the thermal management system of the energy storage battery, the liquid cooling plate is one of the key components of the heat dissipation system. In the existing liquid cooling plate, a flow channel groove for the cooling medium to flow through is usually formed on the bottom plate body, for example, an inlet water straight flow groove is longitudinally arranged, and an outlet water straight flow groove is transversely arranged. In addition, a heat sink is arranged in the inlet water straight flow groove and the outlet water straight flow groove, so as to facilitate the heat dissipation of the liquid cooling water flow in the flow channel groove. Due to the change of the water flow direction at the right-angle corner, the heat sink is bent at a right angle at the connection between the inlet water straight flow groove and the outlet water straight flow groove, which easily causes the water flow entering from the longitudinal direction to directly impact on the inner wall of the transverse direction in the heat sink at the bending part, resulting in a large flow resistance of the water flow at the position and affecting the heat dissipation stability of the liquid cooling plate.

[0003] In order to reduce the large flow resistance caused by the obstruction of each flow channel of the heat sink to the water flow, some heat dissipation waterways do not arrange the heat sink at the right-angle corner, so as to avoid the impact of the water flow on each flow channel of the heat sink. However, the water flow will directly impact on the inner wall of the cooling plate opposite to the flow channel, and in the process of changing the direction, the impacted water flow will be reflected towards the middle position, which causes the water flow to be difficult to enter the outermost single flow channel, resulting in uneven water flow distribution in the outermost part of the area, and affecting the heat dissipation uniformity of the liquid cooling plate.

[0004] Therefore, the prior art still needs to be improved and developed. CONTENT OF THE UTILITY MODEL

[0005] The present application aims to provide a transition structure of a bending part of a heat dissipation waterway and a liquid cooling plate of an energy storage battery, which solves the problem of uneven water flow distribution in the outermost single flow channel in the prior art.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] On the one hand, the present application provides a transition structure of a bending part of a heat dissipation waterway, which is arranged in the corner area connecting the inlet water straight flow groove and the outlet water straight flow groove. The inlet water straight flow groove and the outlet water straight flow groove are perpendicular to each other. A plurality of heat dissipation inlet water straight flow channels are arranged in the inlet water straight flow groove, and a plurality of heat dissipation outlet water straight flow channels are arranged in the outlet water straight flow groove. The transition structure of the bending part comprises:

[0008] The first corner heat dissipation block is arranged in the corner area and has a first flow guide surface and a second flow guide surface perpendicular to each other, the first flow guide surface is matched with the outermost heat dissipation water inlet straight flow channel, and the second flow guide surface is matched with the outermost heat dissipation water outlet straight flow channel to form an outer single flow channel.

[0009] The second corner heat dissipation block is arranged in the corner area and has a second arc-shaped inner flow guide surface, two ends of the arc-shaped inner flow guide surface are matched with the innermost heat dissipation water inlet straight flow channel and the innermost heat dissipation water outlet straight flow channel respectively to form an inner single flow channel.

[0010] Optionally, the first corner heat dissipation block further comprises a first arc-shaped inner flow guide surface, two ends of the first arc-shaped inner flow guide surface are connected with the first flow guide surface and the second flow guide surface respectively.

[0011] The second corner heat dissipation block further comprises a third arc-shaped outer flow guide surface, the third arc-shaped outer flow guide surface is located on a side opposite to the first arc-shaped inner flow guide surface.

[0012] The third arc-shaped outer flow guide surface and the first arc-shaped inner flow guide surface form a variable flow space therebetween.

[0013] Optionally, a flow guide tip is formed between the first flow guide surface and the first arc-shaped inner flow guide surface, and the flow guide tip is aligned with an inner vertical plate of the outermost heat dissipation water inlet straight flow channel.

[0014] Optionally, the flow guide tip has a first flow guide inclined side and a second flow guide inclined side.

[0015] The first flow guide inclined side is located at one end of the first flow guide surface facing the heat dissipation water inlet straight flow channel.

[0016] The second flow guide inclined side is located at one end of the second flow guide surface facing the heat dissipation water inlet straight flow channel.

[0017] Optionally, the first arc-shaped inner flow guide surface comprises a first inclined section, the first inclined section gradually approaches the water outlet straight flow channel in a direction away from the water inlet straight flow channel.

[0018] A second inclined section, the second inclined section gradually moves away from the water inlet straight flow channel in a direction towards the water outlet straight flow channel.

[0019] An inner circular arc section, two ends of the inner circular arc section are connected with the first inclined section and the second inclined section respectively.

[0020] Optionally, an arc length of the inner circular arc section is 1 / 8-1 / 5 of a length of the first inclined section or the second inclined section.

[0021] Optionally, a turbulence heat dissipation block is arranged between the first corner heat dissipation block and the second corner heat dissipation block.

[0022] The turbulence heat dissipation block is arc-shaped.

[0023] Optionally, a transition fillet is arranged at the connection between the first flow guide surface and the second flow guide surface.

[0024] Optionally, a radiator is arranged in the water inlet straight flow groove and the water outlet straight flow groove.

[0025] The radiator in the water inlet straight flow groove forms a plurality of water inlet straight flow channels, and the radiator in the water outlet straight flow groove forms a plurality of water outlet straight flow channels.

[0026] In another aspect, the application further provides a liquid cooling plate for an energy storage battery, which comprises a liquid cooling bottom plate, wherein a first longitudinal straight flow groove and a second longitudinal straight flow groove are arranged on the liquid cooling bottom plate, and a transverse straight flow groove is arranged at the end of the first longitudinal straight flow groove and the end of the second longitudinal straight flow groove, a first corner area is formed between the first longitudinal straight flow groove and the transverse straight flow groove, and a second corner area is formed between the transverse straight flow groove and the second longitudinal straight flow groove.

[0027] The first corner area and the second corner area are both provided with the transition structure at the bending position.

[0028] The transition structure at the bending position of the water cooling path and the liquid cooling plate for the energy storage battery provided by the application have at least the following beneficial effects: the first corner radiator block is arranged in the corner area, the first flow guide surface of the first corner radiator block is matched with the outermost water inlet straight flow channel, the second flow guide surface is matched with the outermost water outlet straight flow channel to form an outer single flow channel. In this way, when the water flow enters the corner area from the water inlet straight flow groove, part of the water flow still enters the outer single flow channel before changing direction, and the water flow is guided in the outer single flow channel to change direction, so that the water flow can smoothly enter the outermost water outlet straight flow channel. The remaining water flow is guided in the corner area from the inner side of the first corner radiator block to change direction, so that the water flow can smoothly enter the plurality of water outlet straight flow channels, and in particular, the outermost single flow channel is easier to be filled with water, so that the liquid flow distribution in the entire corner area is more uniform. The second arc-shaped inner flow guide surface on the second corner radiator block is matched with the innermost water inlet straight flow channel and the innermost water outlet straight flow channel at both ends to form an inner single flow channel. In this way, when the water flow enters the corner area from the water inlet straight flow channel, part of the water flow still enters the inner single flow channel before changing direction, and the water flow is guided in the inner single flow channel to change direction, so that the water flow can smoothly enter the innermost water outlet straight flow channel, and the innermost single flow channel is easier to be filled with water, so that the liquid flow distribution in the entire corner area is more uniform, and the heat dissipation stability of the liquid cooling plate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0030] Figure 1 A cross-sectional view of a main part of a transition structure of a bending part of a heat dissipation waterway provided by an embodiment of the present application;

[0031] Figure 2 An enlarged view of A in Figure 1

[0032] Figure 3 A cross-sectional view of another form of a transition structure of a bending part of a heat dissipation waterway provided by an embodiment of the present application;

[0033] Figure 4 A structural schematic view of a liquid cooling plate of an energy storage battery provided by an embodiment of the present application;

[0034] Figure 5 An exploded view of a liquid cooling plate of an energy storage battery provided by an embodiment of the present application;

[0035] Figure 6 A partial structural schematic view of a radiator of a liquid cooling plate of an energy storage battery provided by an embodiment of the present application.

[0036] In the drawings, various reference signs represent:

[0037] 100, liquid cooling bottom plate; 110, first longitudinal straight flow groove; 111, first corner area; 120, second longitudinal straight flow groove; 121, second corner area; 130, transverse straight flow groove; 140, radiator; 150, outer cover plate; 200, water inlet straight flow groove; 210, heat dissipation water inlet straight flow channel; 300, water outlet straight flow groove; 310, heat dissipation water outlet straight flow channel; 400, corner area; 500, first corner heat dissipation block; 510, first flow guide surface; 511, outer side single flow channel; 520, second flow guide surface; 521, transition round corner; 530, first arc-shaped inner flow guide surface; 531, first inclined section; 532, inner circular arc section; 533, second inclined section; 540, flow change space; 550, flow guide tip; 551, first flow guide inclined side surface; 552, second flow guide inclined side surface; 600, second corner heat dissipation block; 610, second arc-shaped inner flow guide surface; 611, inner side single flow channel; 620, third arc-shaped outer flow guide surface; 700, turbulence heat dissipation block. DETAILED DESCRIPTION

[0038] ​In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application.

[0039] It should be noted that when a component is referred to as being "fixed" or "set" on another component, it can be directly or indirectly on the other component. When a component is referred to as being "connected" to another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or position shown in the drawings, and are only for the convenience of description, and cannot be understood as a limitation on the technical solutions. The terms "first", "second" are only for the convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0040] Embodiment one

[0041] As Figure 1 , Figure 3As shown in the figure, the present embodiment proposes a transition structure of the bending part of the heat dissipation waterway, which is arranged in the corner area 400 connecting the water inlet straight channel 200 and the water outlet straight channel 300. The water inlet straight channel 200 and the water outlet straight channel 300 are perpendicular to each other. The water inlet straight channel 200 is provided with a plurality of heat dissipation water inlet straight channels 210. The water outlet straight channel 300 is provided with a plurality of heat dissipation water outlet straight channels 310. For the convenience of structure description, the center position surrounded by the heat dissipation waterway is taken as the inner side, and the position far away from the center position surrounded by the heat dissipation waterway is taken as the outer side. Therefore, the plurality of heat dissipation water inlet straight channels 210 of one side of the L-shaped heat dissipation waterway are arranged side by side in the direction from the outer side to the inner side. The plurality of heat dissipation water outlet straight channels 310 on the adjacent side are arranged side by side in the direction from the outer side to the inner side. If the present transition structure of the bending part is not adopted, the water flow in the outermost heat dissipation water inlet straight channel 210 is difficult to enter the outermost heat dissipation water outlet straight channel 310 uniformly due to the impact of the inner wall of the corner area 400. Therefore, the transition structure of the bending part of the present embodiment is arranged, which mainly includes a first corner heat dissipation block 500 and a second corner heat dissipation block 600. The first corner heat dissipation block 500 is arranged in the corner area 400 and has a first flow guide surface 510 and a second flow guide surface 520 which are perpendicular to each other. The first flow guide surface 510 is matched with the outermost heat dissipation water inlet straight channel 210, and the second flow guide surface 520 is matched with the outermost heat dissipation water outlet straight channel 310 to form an outer single flow channel 511. The second corner heat dissipation block 600 is arranged in the corner area 400 and has a second arc-shaped inner flow guide surface 610. The two ends of the arc-shaped inner flow guide surface are matched with the innermost heat dissipation water inlet straight channel 210 and the innermost heat dissipation water outlet straight channel 310 respectively to form an inner single flow channel 611.

[0042] As shown in the figure, Figure 1 , Figure 3 The transition structure of the bending part of the present embodiment is arranged by arranging the first corner heat dissipation block 500 in the corner area 400. The first flow guide surface 510 of the first corner heat dissipation block 500 is matched with the outermost heat dissipation water inlet straight channel 210, and the second flow guide surface 520 is matched with the outermost heat dissipation water outlet straight channel 310 to form an outer single flow channel 511. In this way, when the water flow enters the corner area 400 from the water inlet straight channel 200, part of the water flow still enters the outermost outer single flow channel 511 before changing direction and is guided by the outer single flow channel 511 to change direction, so as to smoothly enter the outermost heat dissipation water outlet straight channel 310. The remaining water flow changes direction by being guided in the corner area 400 from the inner side of the first corner heat dissipation block 500, thereby avoiding the impact on the water flow in the outer single flow channel 511. Therefore, the water flow can smoothly enter the plurality of heat dissipation water outlet straight channels 310, especially the outermost single flow channel is easier to enter water, so that the liquid flow distribution of the whole corner area 400 is more uniform.

[0043] As shown in the figure, Figure 1 ,Figure 3 As shown, in addition, in the innermost area of the corner area 400, the water flow in the innermost heat dissipation water inlet straight flow channel 210 will cause a long flow-out distance due to the straight impact, so that the water flow direction will rush through the opening of the innermost heat dissipation water outlet straight flow channel 310, and will not enter the innermost heat dissipation water outlet straight flow channel 310, so that the innermost water flow is insufficient, and the water flow is uneven, and therefore a second corner heat dissipation block 600 is further arranged in the innermost corner area 400, and a second arc-shaped inner flow guide surface 610 on the second corner heat dissipation block 600 is matched with the innermost heat dissipation water inlet straight flow channel 210 and the innermost heat dissipation water outlet straight flow channel 310 at both ends to form an innermost single flow channel 611. Thus, when the water flow enters the corner area 400 from the heat dissipation water inlet straight flow channel 210, part of the water flow still enters the innermost single flow channel 611 before changing direction, and is guided by the innermost single flow channel 611 to change direction, so as to smoothly enter the innermost heat dissipation water outlet straight flow channel 310, so that the innermost single flow channel is more easily filled with water, and the liquid flow distribution of the entire corner area 400 is more uniform, and the heat dissipation stability of the liquid cooling plate is improved.

[0044] As shown in Figure 1 , Figure 3 Further, the first corner heat dissipation block 500 of the embodiment further includes a first arc-shaped inner flow guide surface 530, and both ends of the first arc-shaped inner flow guide surface 530 are connected with the first flow guide surface 510 and the second flow guide surface 520. Thus, the first corner heat dissipation block 500 forms a triangular structure with an arc-shaped bottom edge. The second corner heat dissipation block 600 further includes a third arc-shaped outer flow guide surface 620, and the third arc-shaped outer flow guide surface 620 is located on the side opposite to the first arc-shaped inner flow guide surface 530. Thus, the second corner heat dissipation block 600 is an arc-shaped plate with a circular shape facing inward, so that the third arc-shaped outer flow guide surface 620 and the first arc-shaped inner flow guide surface 530 form a flow changing space 540. When the water flow of the remaining heat dissipation water inlet straight flow channels 210 enters the flow changing space 540, the water flow can be guided by the first arc-shaped inner flow guide surface 530, and the water flow is guided to change direction by the guiding effect, and is buffered by the first arc-shaped inner flow guide surface 530 in the process of changing direction, and smoothly enters the remaining heat dissipation water outlet straight flow channels 310. Moreover, the water flow close to the third arc-shaped outer flow guide surface 620 will form a turbulent flow in the process of flowing through the third arc-shaped outer flow guide surface 620, and the generation of the turbulent flow will also make the water flow in the flow changing space 540 uniform, so as to be redistributed into the heat dissipation water inlet straight flow channels 210. Thus, the water flow in the flow changing space 540 at the middle position can also smoothly enter the plurality of heat dissipation water inlet straight flow channels 210, so as to realize stable heat dissipation.

[0045] As shown in Figure 1 , Figure 2As shown, further, the first flow guide surface 510 of the embodiment forms a flow guide tip 550 with the first arc-shaped inner flow guide surface 530, and the flow guide tip 550 is aligned with the inner vertical plate of the outermost heat dissipation water inlet straight channel 210. The inner wall of the outermost heat dissipation water inlet straight channel 210 is the inner wall of the side close to the center position surrounded by the heat dissipation water path, so that the water flow in the outermost heat dissipation water inlet straight channel 210 can fully enter the outer side single flow channel 511, thereby ensuring that the water flow in the outer side single flow channel 511 is consistent with the water flow in the outermost heat dissipation water inlet straight channel 210 and the outermost heat dissipation water outlet straight channel 310, and improving the stability of the water flow.

[0046] As shown in Figure 1 , Figure 2 As shown, further, the flow guide tip 550 of the embodiment has a first flow guide inclined side 551 and a second flow guide inclined side 552. The first flow guide inclined side 551 is located at one end of the first flow guide surface 510 facing the heat dissipation water inlet straight channel 210, and the second flow guide inclined side 552 is located at one end of the second flow guide surface 520 facing the heat dissipation water inlet straight channel 210. The first flow guide inclined side and the second flow guide inclined side are used for flow guiding, so that the water flow can more easily enter the outer side single flow channel 511.

[0047] As shown in Figure 1 , Figure 3 As shown, further, the first arc-shaped inner flow guide surface 530 of the embodiment includes a first inclined section 531, a second inclined section 533, and an inner circular arc section 532. The first inclined section 531 gradually approaches the water outlet straight channel 300 in a direction away from the water inlet straight channel 200, the second inclined section 533 gradually moves away from the water inlet straight channel 200 in a direction toward the water outlet straight channel 300, and the two ends of the inner circular arc section 532 are connected to the first inclined section 531 and the second inclined section 533, respectively. The first arc-shaped inner flow guide surface 530 structure can make the first inclined section 531 extend as far as possible toward the outside, thereby reducing the turning angle of the water flow in the heat dissipation water inlet straight channel 210 impacting the first inclined section 531, and achieving the effect of relieving the water flow impact. The relieved water flow is turned in the inner circular arc section 532 and then guided by the second inclined section 533, which can greatly relieve the impact of the water flow during turning and make the water flow stable into the heat dissipation water outlet straight channel 310.

[0048] Further, the arc length of the inner circular arc section 532 is 1 / 8-1 / 5 of the length of the first inclined section 531 or the second inclined section 533. This size design is a relatively optimal scheme summarized through multiple experimental simulations of water flow impact, which makes the inner circular arc section 532 of the entire first corner heat dissipation block 500 as close as possible to the intersection of the first flow guide surface 510 and the second flow guide surface 520, thereby making the first corner heat dissipation block 500 smaller in size and reducing the influence on heat dissipation in this area.

[0049] As shown in Figure 3 , further, the connecting part of the first flow guide surface 510 and the second flow guide surface 520 is provided with a transition round corner 521. The transition round corner 521 makes the water flow change direction more smoothly.

[0050] As shown in Figure 3 , in another structure, the first corner heat dissipation block 500 and the second corner heat dissipation block 600 in the embodiment are provided with a spoiler heat dissipation block 700; the spoiler heat dissipation block 700 is arc-shaped. By providing at least one spoiler block in the flow changing space 540, more water flow in the flow changing space 540 can be disturbed to generate turbulence when flowing through the spoiler block, prompting the incoming water flow to be redistributed in the flow changing space 540 before being discharged. The water outflow is more uniform.

[0051] As shown in Figure 5 , Figure 6 , further, the water inlet straight flow groove 200 and the water outlet straight flow groove 300 are both provided with a heat sink 140; the heat sink 140 in the water inlet straight flow groove 200 forms a plurality of heat dissipation water inlet straight flow channels 210, and the heat sink 140 in the water outlet straight flow groove 300 forms a plurality of heat dissipation water outlet straight flow channels 310. The heat sink 140 specifically includes: an upper heat dissipation plate and a lower heat dissipation plate arranged in a staggered manner, and a vertical plate connected between the upper heat dissipation plate and the lower heat dissipation plate. In this way, a long wall structure can be repeatedly and continuously arranged. This structure can be formed by stamping, and since the heat sink 140 is manufactured separately before the liquid cooling bottom plate 100 is assembled, the direct use of stamping can improve production efficiency. When the heat sink 140 is assembled to the liquid cooling bottom plate 100, small flow channels (i.e. heat dissipation water inlet straight flow channels 210 or heat dissipation water outlet straight flow channels 310) can be formed between the vertical plates, which increases the contact area of the cooling liquid and promotes heat dissipation.

[0052] Embodiment two

[0053] As shown in Figure 1 , Figure 4 , Figure 5As shown, the embodiment proposes a liquid cooling plate for energy storage battery, which comprises a liquid cooling bottom plate 100, the liquid cooling bottom plate 100 is provided with a first longitudinal straight groove 110 and a second longitudinal straight groove 120, and a transverse straight groove 130 connected to the end of the first longitudinal straight groove 110 and the end of the second longitudinal straight groove 120, a first corner area 111 is formed between the first longitudinal straight groove 110 and the transverse straight groove 130, and a second corner area 121 is formed between the transverse straight groove 130 and the second longitudinal straight groove 120. The heat sink 140 is detachably arranged in the first longitudinal straight groove 110, the second longitudinal straight groove 120 and the transverse straight groove 130. The first corner area 111 and the second corner area 121 are both provided with the flow guide structure of the heat dissipation waterway as described above.

[0054] As shown in Figure 1 , Figure 5 , the first longitudinal straight groove 110, the transverse straight groove 130 and the second longitudinal straight groove 120 are connected end to end to form a U-shaped waterway channel, and two corner areas 400 are formed at the connected positions, wherein the first longitudinal straight groove 110 in the first corner area 111 serves as the water inlet straight groove 200, and the transverse straight groove 130 serves as the water outlet straight groove 300. In the second corner area 121, the transverse straight groove 130 serves as the water inlet straight groove 200, and the second longitudinal straight groove 120 serves as the water outlet straight groove 300. The heat sink 140 divides a plurality of small flow channels arranged around the U-shaped waterway channel, and the water flow of the cooling liquid flows along the path of the first longitudinal straight groove 110 to the transverse straight groove 130 and then to the second longitudinal straight groove 120 through these small flow channels. Thus, the heat conducted on the liquid cooling bottom plate 100 is removed, realizing the liquid cooling function.

[0055] As shown in Figure 4 , Figure 5 , further, the liquid cooling plate for energy storage battery further comprises an outer cover plate 150 connected to the liquid cooling bottom plate 100 and covering the first longitudinal straight groove 110, the second longitudinal straight groove 120 and the transverse straight groove 130. When the outer cover plate 150 is covered, the outer cover plate 150 covers the first longitudinal straight groove 110, the second longitudinal straight groove 120 and the transverse straight groove 130 to form a channel for the cooling liquid to flow.

[0056] In summary, the application provides a transition structure of a bending part of a heat dissipation waterway and an energy storage battery liquid cooling plate. By arranging a first corner heat dissipation block in the corner area, when the water flow enters the corner area from the water inlet straight flow groove, part of the water flow still enters the outer single flow channel on the outermost side before changing direction, and the water flow is guided to change direction through the outer single flow channel, so as to smoothly enter the heat dissipation water outlet straight flow channel on the outermost side. The remaining water flow is guided to change direction in the corner area from the inner side of the first corner heat dissipation block, so as to avoid impacting the water flow in the outer single flow channel, so that the water flow can smoothly enter the plurality of heat dissipation water outlet straight flow channels, and in particular, the single flow channel on the outermost side is more easily filled with water, so that the liquid flow distribution in the entire corner area is more uniform. By arranging a second corner heat dissipation block, when the water flow enters the corner area from the heat dissipation water inlet straight flow channel, part of the water flow still enters the inner single flow channel on the innermost side before changing direction, and the water flow is guided to change direction through the inner single flow channel, so as to smoothly enter the heat dissipation water outlet straight flow channel on the innermost side, so that the single flow channel on the innermost side is more easily filled with water, so that the liquid flow distribution in the entire corner area is more uniform, and the heat dissipation stability of the liquid cooling plate is improved. By further arranging a spoiler, the flow resistance in the entire corner area is small, the liquid flow distribution is more uniform, and the comprehensive performance of the liquid cooling plate is improved.

[0057] The above only describes the preferred embodiments of the application and is not intended to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A transition structure of a bending portion of a heat dissipation waterway, which is arranged in a corner area at a connecting portion of an inlet straight flow groove and an outlet straight flow groove, the inlet straight flow groove and the outlet straight flow groove being perpendicular to each other, a plurality of heat dissipation inlet straight flow channels being arranged in the inlet straight flow groove, and a plurality of heat dissipation outlet straight flow channels being arranged in the outlet straight flow groove, characterized in that, The transition structure of the bending portion comprises: a first corner heat dissipation block arranged in the corner area and having a first flow guide surface and a second flow guide surface perpendicular to each other, the first flow guide surface being matched with the outermost heat dissipation water inlet straight flow channel, and the second flow guide surface being matched with the outermost heat dissipation water outlet straight flow channel to form an outer single flow channel; a second corner heat dissipation block arranged in the corner area and having a second arc-shaped inner flow guide surface, two ends of the arc-shaped inner flow guide surface being matched with the innermost heat dissipation water inlet straight flow channel and the innermost heat dissipation water outlet straight flow channel respectively to form an inner single flow channel.

2. The transition structure of a bent portion of a heat dissipating water passage according to claim 1, wherein The first corner heat dissipation block further comprises a first arc-shaped inner flow guide surface, two ends of the first arc-shaped inner flow guide surface being connected with the first flow guide surface and the second flow guide surface respectively; The second corner heat dissipation block further comprises a third arc-shaped outer flow guide surface located on the side opposite to the first arc-shaped inner flow guide surface; A variable flow space is formed between the third arc-shaped outer flow guide surface and the first arc-shaped inner flow guide surface.

3. The transition structure of the bent portion of the heat dissipating water passage according to claim 2, wherein A flow guide tip is formed between the first flow guide surface and the first arc-shaped inner flow guide surface, and the flow guide tip is aligned with the inner vertical plate of the outermost heat dissipation water inlet straight flow channel.

4. The transition structure of the bent portion of the heat dissipating water passage according to claim 3, wherein The flow guide tip has a first flow guide inclined side and a second flow guide inclined side; The first flow guide inclined side is located at one end of the first flow guide surface facing the heat dissipation water inlet straight flow channel; The second flow guide inclined side is located at one end of the second flow guide surface facing the heat dissipation water inlet straight flow channel.

5. The transition structure of the bent portion of the heat dissipating water passage according to claim 2, wherein The first arc-shaped inner flow guide surface comprises a first inclined section gradually approaching the water outlet straight flow channel in a direction away from the water inlet straight flow channel, a second inclined section gradually away from the water inlet straight flow channel in a direction toward the water outlet straight flow channel, and an inner circular arc section having two ends connected with the first inclined section and the second inclined section respectively. The arc length of the inner circular arc section is 1 / 8-1 / 5 of the length of the first inclined section or the second inclined section. A spoiler heat dissipation block is arranged between the first corner heat dissipation block and the second corner heat dissipation block; 6. The transition structure of the bent portion of the heat dissipating water passage according to claim 5, wherein The spoiler heat dissipation block is arc-shaped.

7. The transition structure of a bent portion of a heat dissipating water passage according to claim 5, wherein A transition round corner is arranged at the connection of the first flow guide surface and the second flow guide surface. A heat dissipation device is arranged in each of the water inlet straight flow channel and the water outlet straight flow channel.

8. The transition structure of a bent portion of a heat dissipating waterway according to any one of claims 1 to 6, wherein The heat dissipation device in the water inlet straight flow channel forms a plurality of heat dissipation water inlet straight flow channels, and the heat dissipation device in the water outlet straight flow channel forms a plurality of heat dissipation water outlet straight flow channels.

9. The transition structure of a bent portion of a heat dissipating waterway according to any one of claims 1 to 6, wherein It comprises: a liquid cooling bottom plate having a first longitudinal straight flow channel and a second longitudinal straight flow channel, and a transverse straight flow channel connected to the end of the first longitudinal straight flow channel and the end of the second longitudinal straight flow channel, a first corner area being formed between the first longitudinal straight flow channel and the transverse straight flow channel, and a second corner area being formed between the transverse straight flow channel and the second longitudinal straight flow channel; 10. An energy storage battery liquid cold plate characterized by, The first corner area and the second corner area are each provided with the transition structure of the bending portion as claimed in any one of claims 1-9. ​ ​

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