Flow guide structure of heat dissipation waterway and energy storage battery liquid cooling plate

Abstract

The utility model provides a flow guide structure of a heat dissipation water path and an energy storage battery liquid cooling plate, the flow guide structure is 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, the water inlet direct-flow groove is perpendicular to the water outlet direct-flow groove, and the flow guide structure comprises a plurality of turbulent flow columns which are distributed in the corner area; a plurality of rows of turbulent flow sets are formed in the water inlet direction of water flow, and the turbulent flow columns in every two adjacent rows of turbulent flow sets are arranged in a staggered mode. The problems that in the prior art, the flow resistance of water flow at the corner position is large, the uniformity of the water flow is poor, and the heat dissipation stability of the liquid cooling plate is affected are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy battery, more particularly to a flow guide structure of a heat dissipation waterway and a liquid cooling plate for 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. Among the heat dissipation methods for the energy storage battery, the liquid cooling plate is a key component of the thermal management system.

[0003] In the existing liquid cooling plate, a flow channel for the cooling medium to flow through is usually formed on the bottom plate body. The flow channel needs to be bent at the corner of the liquid cooling plate, for example, the inlet water straight channel is longitudinally arranged, and the outlet water straight channel is transversely arranged. In this way, the two are connected at a right angle. When the liquid cooling water flows in the flow channel, the water flow directly impacts on the inner wall of the transverse direction from the longitudinal direction, resulting in large flow resistance of the water flow at this position and poor uniformity of the water flow, thereby affecting the heat dissipation stability of the liquid cooling plate.

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

[0005] The present application aims to provide a flow guide structure of a heat dissipation waterway and a liquid cooling plate for energy storage battery, which solves the problem of large flow resistance of the water flow at the corner position, poor uniformity of the water flow, and thus affecting the heat dissipation stability of the liquid cooling plate in the prior art.

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

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

[0008] A plurality of turbulence columns, the plurality of turbulence columns are distributed in the corner area and form a plurality of rows of turbulence groups along the water inlet direction of the water flow, and the turbulence columns in the adjacent two rows of turbulence groups are arranged staggeredly.

[0009] Optionally, the turbulence column comprises a head portion on the water inlet side facing the water inlet direction, and the width of the head portion gradually increases along the water flow direction.

[0010] Optionally, the head portion is semicircular or conical.

[0011] Optionally, the turbulence column further comprises a tail portion opposite to the head portion, and the tail portion is arc-shaped.

[0012] Optionally, the tail portion is semicircular.

[0013] Optionally, the line connecting the midpoint of the head part to the midpoint of the tail part of the spoiler column is the column length center line;

[0014] In the water inlet direction, the column length center lines of the spoiler columns in the plurality of spoiler groups gradually incline toward the water outlet direction along the length direction of the water inlet straight flow groove.

[0015] Optionally, in the water inlet direction, the spacing distance between the plurality of rows of spoiler groups gradually increases.

[0016] On the other hand, the application also provides a liquid cooling plate for energy storage batteries, which comprises a liquid cooling bottom plate, a first longitudinal straight flow groove and a second longitudinal straight flow groove are formed on the liquid cooling bottom plate, and a transverse straight flow groove is connected to 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.

[0017] A heat sink is arranged in the first longitudinal straight flow groove, the second longitudinal straight flow groove, and the transverse straight flow groove.

[0018] The first corner area and the second corner area are both provided with the flow guide structure of the heat dissipation waterway as described above.

[0019] Optionally, the heat sink comprises 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.

[0020] Optionally, the liquid cooling plate for energy storage batteries further comprises an outer cover plate connected to the liquid cooling bottom plate and covering the first longitudinal straight flow groove, the second longitudinal straight flow groove, and the transverse straight flow groove.

[0021] The flow guide structure of the heat dissipation waterway and the liquid cooling plate for energy storage batteries provided by the application have at least the following beneficial effects: in the flow channel formed by the water inlet straight flow groove and the water outlet straight flow groove being connected perpendicularly, an acute corner is formed in the corner area at the connection between the water inlet straight flow groove and the water outlet straight flow groove, a plurality of spoiler columns are arranged in the corner area, the plurality of spoiler columns form a plurality of rows of spoiler groups in the water inlet direction of the water flow, and the spoiler columns in the adjacent two rows of spoiler groups are arranged in a staggered manner, so as to disturb the water flow on the water inlet side, the water flow impacts the small spoiler columns to mix and redistribute, which not only makes the water flow fill the entire corner area more uniformly, thereby improving the water flow heat dissipation uniformity of the corner area, but also avoids the disturbed water flow from impacting the inner wall of the corner area vertically, thereby reducing the flow resistance and improving the heat dissipation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] 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 some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor.

[0023] Figure 1 A structural schematic diagram of a liquid cooling plate of an energy storage battery provided by the embodiments of the present application is shown in the figure.

[0024] Figure 2 An exploded view of a liquid cooling plate of an energy storage battery provided by the embodiments of the present application is shown in the figure.

[0025] Figure 3 A partial structural schematic diagram of a liquid cooling bottom plate of a liquid cooling plate of an energy storage battery provided by the embodiments of the present application is shown in the figure.

[0026] Figure 4 A partial structural schematic diagram of a liquid cooling bottom plate of a liquid cooling plate of an energy storage battery provided by the embodiments of the present application is shown in the figure. Figure 3 An enlarged view of A in the figure.

[0027] Figure 5 A partial top view of a flow guide structure of a heat dissipation waterway provided by the embodiments of the present application is shown in the figure.

[0028] In the figure, various reference signs are as follows:

[0029] 100, liquid cooling bottom plate; 110, water inlet straight flow groove; 111, first longitudinal straight flow groove; 112, second longitudinal straight flow groove; 120, water outlet straight flow groove; 121, transverse straight flow groove; 130, corner area; 131, first corner area; 132, second corner area; 140, turbulence group; 150, turbulence column; 151, head; 152, tail; 153, column length center line; 200, radiator; 210, upper heat dissipation plate; 220, lower heat dissipation plate; 230, vertical plate; 300, outer cover plate. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0031] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be located directly or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on this technical solution. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] Example 1

[0033] like Figure 2 、 Figure 3 As shown, this embodiment proposes a heat dissipation water channel guide structure, which is used to be arranged in the corner area 130 where the water inlet direct current groove 110 and the water outlet direct current groove 120 are connected. The water inlet direct current groove 110 and the water outlet direct current groove 120 are perpendicular to each other. Figure 3 、 Figure 5 As shown, the flow-guiding structure of this embodiment mainly includes: a plurality of flow-disrupting columns 150. The plurality of flow-disrupting columns 150 are distributed in the corner area 130 and form a plurality of rows of flow-disrupting groups 140 along the water inlet direction of the water flow. The flow-disrupting columns 150 in two adjacent rows of flow-disrupting groups 140 are staggered. In the specific structure, the water flow enters the corner area 130 from the direction of the water inlet direct current trough 110. Then, the extension direction along the water inlet direct current trough 110 is the water inlet direction, and the extension direction along the water outlet direct current trough 120 is the water outlet direction. The water inlet direction and the water outlet direction are regarded as being perpendicular to each other, and the inscribed arc direction of the two perpendicular directions is the water flow transition direction. This direction is only used for structural description, and the actual water flow direction is not the same as this water flow transition direction. In the water inlet direction (or water flow transition direction), the spoiler columns 150 are arranged in rows at intervals to form a spoiler group 140, and the spoiler columns 150 in each spoiler group 140 are staggered, so that each spoiler column 150 in the spoiler group 140 disrupts the water flow layer by layer, achieving a better spoiler effect.

[0034] like Figure 5As shown, in the flow channel formed by the perpendicular connection of the water inlet straight flow tank 110 and the water outlet straight flow tank 120, an acute bend is formed in the corner area 130 at the connection between the water inlet straight flow tank 110 and the water outlet straight flow tank 120. Impact occurs at the acute bend, which not only causes insufficient water flow in some areas of the corner area 130 and greater water flow in some areas, but also causes uneven water flow distribution. By arranging a plurality of turbulence columns 150 in the corner area 130, the plurality of turbulence columns 150 form a plurality of turbulence groups 140 along the water inlet direction of the water flow, and the turbulence columns 150 in adjacent two rows of turbulence groups 140 are arranged staggered. When the water flow enters the corner area 130 from the water inlet direction, it will impact the first row of turbulence groups 140 and pass through the first row of turbulence columns 150, and impact the second row of turbulence columns 150. In this way, the water flow on the water inlet side is continuously disturbed, so that the water flow impacts the small turbulence columns 150 to mix and redistribute the water flow, which not only makes the water flow more evenly fill the entire corner area 130, thereby improving the water flow uniformity of the corner area 130, but also avoids the disturbed water flow vertically impacting the inner wall of the corner area 130, thereby reducing the flow resistance and improving the heat dissipation efficiency.

[0035] The turbulence column 150 can be arranged in various structural forms, and mainly can achieve small column surface area and achieve turbulence to change the water flow direction, which can achieve the technical effects of the present scheme. In addition, it should be noted that the contour of the corner area 130 of the present scheme can be square (i.e., the end portions of the water inlet straight flow tank 110 and the water outlet straight flow tank 120 are arranged perpendicularly), or rhombus (the end portions of the water inlet straight flow tank 110 and the water outlet straight flow tank 120 are arranged obliquely), etc. In the present embodiment, the square corner area 130 is mainly used for structural description.

[0036] As shown in the figure, Figure 5 Further, in one embodiment of the present scheme, the turbulence column 150 specifically includes a head portion 151 facing the water inlet side in the water inlet direction, and the width of the head portion 151 gradually increases along the water inlet direction. Taking the first row of turbulence groups 140 as an example, it is the row of turbulence columns 150 closest to the connection between the water inlet straight flow tank 110 and the corner area 130. The turbulence columns 150 in the first row of turbulence groups 140 extend parallel to the water inlet direction, so that the head portion 151 of the turbulence column 150 is opposite to the end portion of the water inlet straight flow tank 110. The extension direction of the row of turbulence columns 150 is the length of the turbulence column 150, and the direction perpendicular to the horizontal plane is the width of the turbulence column 150. Therefore, the width of the head portion 151 facing the water flow is small, and the width of the head portion 151 away from the water flow is large. When facing the water flow impact, the water flow can be guided and changed direction along the changing inner wall of the head portion 151, and the smaller front end makes the surface of the turbulence column 150 impacted smaller, thereby effectively reducing the water resistance while changing the direction of the water flow.

[0037] As shown in the figure, Figure 5As shown, further, the head 151 in the present solution is semi-elliptical or conical. The head 151 of the present embodiment adopts a semi-elliptical head 151, similar to a bullet head structure; so that the side wall of the head 151 is arc-shaped, so that in the process of being impacted by the water flow, the water flow flows along the arc-shaped side wall on both sides of the width direction, thereby changing the direction of the water flow while smoothly guiding the water flow, reducing water resistance.

[0038] As shown, further, the head 151 in the present solution is semi-elliptical or conical. The head 151 of the present embodiment adopts a semi-elliptical head 151, similar to a bullet head structure; so that the side wall of the head 151 is arc-shaped, so that in the process of being impacted by the water flow, the water flow flows along the arc-shaped side wall on both sides of the width direction, thereby changing the direction of the water flow while smoothly guiding the water flow, reducing water resistance. Figure 5 As shown, further, the head 151 in the present solution is semi-elliptical or conical. The head 151 of the present embodiment adopts a semi-elliptical head 151, similar to a bullet head structure; so that the side wall of the head 151 is arc-shaped, so that in the process of being impacted by the water flow, the water flow flows along the arc-shaped side wall on both sides of the width direction, thereby changing the direction of the water flow while smoothly guiding the water flow, reducing water resistance.

[0039] As shown, further, the head 151 in the present solution is semi-elliptical or conical. The head 151 of the present embodiment adopts a semi-elliptical head 151, similar to a bullet head structure; so that the side wall of the head 151 is arc-shaped, so that in the process of being impacted by the water flow, the water flow flows along the arc-shaped side wall on both sides of the width direction, thereby changing the direction of the water flow while smoothly guiding the water flow, reducing water resistance. Figure 5 As shown, further, the head 151 in the present solution is semi-elliptical or conical. The head 151 of the present embodiment adopts a semi-elliptical head 151, similar to a bullet head structure; so that the side wall of the head 151 is arc-shaped, so that in the process of being impacted by the water flow, the water flow flows along the arc-shaped side wall on both sides of the width direction, thereby changing the direction of the water flow while smoothly guiding the water flow, reducing water resistance.

[0040] As shown, further, the head 151 in the present solution is semi-elliptical or conical. The head 151 of the present embodiment adopts a semi-elliptical head 151, similar to a bullet head structure; so that the side wall of the head 151 is arc-shaped, so that in the process of being impacted by the water flow, the water flow flows along the arc-shaped side wall on both sides of the width direction, thereby changing the direction of the water flow while smoothly guiding the water flow, reducing water resistance. Figure 5As shown, further, the line connecting the midpoint of the head 151 to the midpoint of the tail 152 on the spoiler column 150 in this embodiment is the column length centerline 153 (extending in the length direction). Along the water inlet direction, the column length centerlines 153 of the spoiler columns 150 in the plurality of spoiler groups 140 gradually tilt along the length direction of the water inlet direct current trough 110 toward the direction of the water outlet direct current trough 120. For example, the centerline 153 of each spoiler column 150 in the first row of spoiler groups 140 is aligned with the direction of extension of the water inlet direct current slot 110; the centerline 153 of each spoiler column 150 in the second row is tilted at a certain angle to the direction of extension of the water inlet direct current slot 110; the centerline 153 of each spoiler column 150 in the third row is tilted at a greater angle to the direction of extension of the water inlet direct current slot 110, and so on. The centerline 153 of each spoiler column 150 in the spoiler group 140 farther away from the water inlet direct current slot 110 gradually becomes parallel to the direction of extension of the water outlet direct current slot 120. After the water flows from the water inlet direct current slot 110 into the corner area 130, the staggered arrangement of spoiler groups 140 not only changes the direction of each water flow through the spoiler group 140, but also guides the general direction of the overall water flow. Because each row of spoiler columns 150 gradually tilts toward the direction of extension of the water outlet trough 120, the overall water flow generally follows the tilt of the spoiler columns 150, creating a diversion effect that brings the overall water flow closer to the theoretical water flow transition direction. This significantly reduces the impact of the water flow on the inner wall of the corner area 130, thereby reducing flow resistance and improving heat dissipation efficiency.

[0041] like Figure 1 As shown, further, in this embodiment, the spacing between the multiple rows of spoiler groups 140 gradually increases along the water inlet direction. Since the water flow just entering the corner area 130 will have a greater impact on the first row of spoiler groups 140, after being buffered by the first row of spoiler resistors, the direction changes, reducing the frontal impact force. After the mixed flow, the impact force on the rear row of spoiler groups 140 will gradually decrease. Therefore, gradually changing the spacing between the multiple rows of spoiler groups 140 can provide space for the confused water flow to fully mix and flow, thereby making the water flow more uniform and filling the entire corner area 130, and more evenly dissipating heat from the heat dissipation area covered by the corner area 130.

[0042] Example 2

[0043] like Figure 2 、 Figure 3 、 Figure 3As shown, this embodiment provides a liquid cooling plate for an energy storage battery, comprising: a liquid cooling base plate 100 and a radiator 200. The liquid cooling base plate 100 is provided with a first longitudinal DC channel 111 and a second longitudinal DC channel 112, as well as a transverse DC channel 121 connected to the ends of the first longitudinal DC channel 111 and the second longitudinal DC channel 112. A first corner region 131 is formed between the first longitudinal DC channel 111 and the transverse DC channel 121, and a second corner region 132 is formed between the transverse DC channel 121 and the second longitudinal DC channel 112. The radiator 200 is detachably disposed within the first longitudinal DC channel 111, the second longitudinal DC channel 112, and the transverse DC channel 121. The first corner region 131 and the second corner region 132 are both provided with the aforementioned heat dissipation water channel guide structure.

[0044] A U-shaped waterway is formed by connecting the first longitudinal direct current channel 111, the transverse direct current channel 121, and the second longitudinal direct current channel 112 end-to-end. Two corner areas 130 are formed at the connection points. In the first corner area 131, the first longitudinal direct current channel 111 serves as the water inlet direct current channel 110, and the transverse direct current channel 121 serves as the water outlet direct current channel 120. In the second corner area 132, the transverse direct current channel 121 serves as the water inlet direct current channel 110, and the second longitudinal direct current channel 112 serves as the water outlet direct current channel 120. The radiator 200 separates multiple small flow channels arranged around the U-shaped waterway. The coolant flows through these small flow channels, following the path from the first longitudinal direct current channel 111 to the transverse direct current channel 121 and then to the second longitudinal direct current channel 112. This removes heat conducted from the liquid-cooled baseplate 100, achieving liquid cooling.

[0045] like Figure 4 、 Figure 1 As shown, the radiator 200 further comprises: an upper heat sink 210 and a lower heat sink 220, which are arranged in an offset manner, and a vertical plate 230 connected between the upper heat sink 210 and the lower heat sink 220. Specifically, a vertical plate 230 is fixed vertically on one side in the width direction. The upper end of the vertical plate 230 is connected to the upper heat sink 210. One end of the upper heat sink 210 is vertically connected to another vertical plate 230, and the lower end of the other vertical plate 230 is connected to the lower heat sink 220. This arrangement is repeated continuously to form a Great Wall plate structure. This structure can be formed by stamping. Since the radiator 200 is pre-fabricated separately before assembly of the energy storage battery liquid cooling plate, direct stamping can improve production efficiency. When the radiator 200 is assembled on the liquid cooling base plate 100, small flow channels are formed between the vertical plates 230, increasing the coolant contact area and promoting heat dissipation. It is easy to imagine that the radiator 200 can also adopt other traditional heat dissipation structures to achieve the technical effect of promoting heat dissipation.

[0046] like Figure 2 、 ​As shown, further, the energy storage battery liquid cooling plate further comprises an outer cover plate 300 connected to the liquid cooling bottom plate 100 and covering the first longitudinal straight flow groove 111, the second longitudinal straight flow groove 112 and the transverse straight flow groove 121. When the outer cover plate 300 is covered, the outer cover plate 300 covers the first longitudinal straight flow groove 111, the second longitudinal straight flow groove 112 and the transverse straight flow groove 121 to form a channel for the cooling liquid to flow.

[0047] In summary, in the flow channel formed by the perpendicular connection of the water inlet straight flow groove and the water outlet straight flow groove, an acute bend is formed in the corner area of the connection between the water inlet straight flow groove and the water outlet straight flow groove. By arranging a plurality of turbulence columns in the corner area, the plurality of turbulence columns are arranged in multiple rows of turbulence groups along the water inlet direction of the water flow, and the turbulence columns in the adjacent two rows of turbulence groups are staggered, thereby disturbing the water flow on the water inlet side. The water flow impacts these small turbulence columns to mix and redistribute the fluid. This not only makes the water flow more evenly fill the entire corner area, thereby improving the water flow heat dissipation uniformity of the corner area, but also avoids the disturbed water flow vertically impacting the inner wall of the corner area, thereby reducing the flow resistance and improving the heat dissipation efficiency.

[0048] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flow guide structure of a heat dissipating waterway, for being arranged in a corner region at a connection between an inlet straight flow channel and an outlet straight flow channel, the inlet straight flow channel and the outlet straight flow channel being perpendicular, characterized in that, The flow guide structure comprises: a plurality of spoiler columns, the plurality of spoiler columns being distributed in the corner area and forming a plurality of rows of spoiler groups in the water inflow direction, and each spoiler column in adjacent two rows of spoiler groups being staggered.

2. The flow guide structure of the heat dissipating water passage according to claim 1, wherein The spoiler column comprises a head portion on the water inflow side of the water inflow direction, and the width of the head portion gradually increases along the water inflow direction.

3. The flow guide structure of the heat dissipating water passage according to claim 2, wherein The head portion is semi-elliptical or conical.

4. The flow guide structure of the heat dissipating water passage according to claim 2, wherein The spoiler column further comprises a tail portion on the side opposite to the head portion, and the tail portion is arc-shaped.

5. The flow guide structure of the heat dissipating water passage according to claim 4, wherein The tail portion is semicircular.

6. The flow guide structure of the heat dissipating water passage according to claim 4, wherein The connecting line of the midpoint of the head portion to the midpoint of the tail portion on the spoiler column is a column length center line. Along the water inflow direction, the column length center line of the spoiler column in the plurality of spoiler groups gradually inclines along the length direction of the water inflow straight channel towards the direction of the water outflow straight channel.

7. The flow guide structure of the heat dissipating water passage according to claim 4, wherein Along the water inflow direction, the interval distance between the plurality of rows of spoiler groups gradually increases.

8. An energy storage battery liquid cold plate characterized by, Comprise: A liquid cooling bottom plate, a first longitudinal straight channel and a second longitudinal straight channel are opened on the liquid cooling bottom plate, and a transverse straight channel is connected at the end of the first longitudinal straight channel and the end of the second longitudinal straight channel, the first longitudinal straight channel and the transverse straight channel form a first corner area, and the transverse straight channel and the second longitudinal straight channel form a second corner area; A radiator is arranged in the first longitudinal straight channel, the second longitudinal straight channel and the transverse straight channel; The first corner area and the second corner area are both provided with the flow guide structure of the heat dissipation waterway as claimed in any one of claims 1-7.

9. The energy storage battery liquid cold plate of claim 8, wherein, The radiator comprises: an upper radiator plate and a lower radiator plate arranged in a staggered manner, and a vertical plate connected between the upper radiator plate and the lower radiator plate.

10. The energy storage battery liquid cold plate of claim 8, wherein, The energy storage battery liquid cooling plate further comprises: an outer cover plate connected to the liquid cooling bottom plate and covering the first longitudinal straight channel, the second longitudinal straight channel and the transverse straight channel.

Images