Power battery liquid cooling plate with pipeline structure

Abstract

The invention discloses a power battery liquid cooling plate with a pipeline structure, which comprises an upper sealing plate, a liquid inlet pipeline and a liquid outlet pipeline are inserted in the middle of one side of the top of the upper sealing plate, the liquid inlet pipeline and the liquid outlet pipeline are arranged side by side, and a runner plate communicated with the liquid inlet pipeline and the liquid outlet pipeline is mounted at the bottom of the upper sealing plate. A plurality of flow dividing assemblies used for enabling cooling fluid to flow in a dispersed mode are installed on the flow channel plate, an extension plate is installed in the middle of one side of the flow channel plate, a human-shaped groove channel extending to the flow channel plate is formed in the extension plate, and liquid cooling pipelines arranged in a multi-stage S shape are arranged on the two sides of the top face of the flow channel plate. According to the liquid cooling system, the relative balance of the temperature of the liquid cooling water in each area in the liquid cooling system can be effectively improved, so that the cooling reaction is faster, the heat change can be coped with more timely, the dynamic performance of the system is improved, in addition, the flow distribution of the liquid cooling water is more uniform, dead zones are reduced, and local overheating or cooling is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling plates, and in particular to a power battery liquid cooling plate with a pipeline structure. Background Art

[0002] As the performance of electronic devices improves, the heat generated also increases. Effective thermal management is the key to ensuring the stability of equipment and extending its service life. Among them, the liquid cooling system has a higher heat conduction efficiency than the air cooling system, and can transfer heat from the heat source to the cooling medium more quickly, which is especially suitable for applications with high power density.

[0003] In the liquid cooling plates currently used, the liquid circulation pipeline is usually in a single shape. In order to ensure that the liquid is widely distributed, the single liquid circulation pipeline is usually in a multi-stage bend shape. However, in this state, the length of the entire pipeline is increased. When the liquid cooling water just enters the pipeline, the temperature is temporarily at a low state. However, as the liquid cooling water continues to flow in the pipeline, the temperature of the liquid cooling water gradually rises, which affects the temperature of the liquid cooling water in the entire channel. The difference is large, thus affecting the overall heat dissipation effect. Summary of the invention

[0004] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a power battery liquid cooling plate with a pipeline structure to solve the problem mentioned in the above background technology that the temperature of liquid cooling water in various areas of the liquid cooling plate is uneven, thereby affecting the overall heat dissipation effect.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a power battery liquid cooling plate with a pipeline structure, comprising an upper sealing plate, a liquid inlet pipe and a liquid outlet pipe are plugged into the middle of one side of the top of the upper sealing plate, and the liquid inlet pipe and the liquid outlet pipe are arranged side by side, a flow channel plate interconnected with the liquid inlet pipe and the liquid outlet pipe is installed at the bottom of the upper sealing plate, and a plurality of flow distribution components for dispersing the flow of cooling fluid are installed on the flow channel plate;

[0006] An extension plate is installed in the middle of one side of the flow channel plate, and a human-shaped groove extending to the flow channel plate is opened on the extension plate. Liquid cooling pipes arranged in a multi-stage S shape are opened on both sides of the top surface of the flow channel plate, and the intersection of the two groups of liquid cooling pipes are connected with the bottom of the liquid outlet pipe, and guide pipes connected with the liquid inlet ends of the two liquid cooling pipes are opened at both ends of the human-shaped groove away from the extension plate. The top surface of the flow channel plate is also provided with a branch pipe for converging the liquid cooling water in the guide pipe with the liquid cooling water in the liquid cooling pipe.

[0007] Preferably, the width of the liquid cooling pipe is at least twice that of the guide pipe, the intersection of the two groups of liquid cooling pipes is in a < shape, and the midpoint of the intersection of the two groups of liquid cooling pipes coincides with the central axis of the flow channel plate.

[0008] Preferably, the liquid cooling pipeline is composed of a plurality of liquid inlet channels, liquid outlet channels and curved channels, and the curved channels are arranged at one end of two adjacent liquid inlet channels and liquid outlet channels;

[0009] The tail end of the branch pipe is communicated with the curved channel and has the same direction as the liquid cooling water in the liquid outlet channel.

[0010] Preferably, the branch pipe is composed of a wide inlet groove arranged in a right-angle trapezoid and a narrow groove arranged in a rectangular shape, and one end of the wide inlet groove is interconnected with the guide pipe.

[0011] Preferably, a triangular block for guiding part of the liquid cooling water into the branch pipe is installed on the inner wall of the guide pipe close to the branch pipe, and the side of the triangular block close to the human-shaped groove is inclined, and the angle between one side of the triangular block and the inner wall of the branch pipe is between 120°-160°.

[0012] Preferably, the flow diverter assembly is installed in a liquid inlet channel in the liquid cooling pipeline, and the front and rear rows of flow diverter assemblies are arranged in a front-to-back staggered manner.

[0013] Preferably, the diversion component includes a diversion structure installed on the bottom wall of the liquid inlet channel and arranged in a > shape, the internal angle of the diversion structure is between 90° and 120°, and a plurality of holes and grooves for disrupting the laminar flow state of the liquid are opened on the diversion structure.

[0014] Preferably, a vertical block is provided on the side of the diversion structure away from the guide pipe, and two vertically arranged reinforcing plates are installed between the vertical block and the diversion structure, and the reinforcing plates are spaced apart from the vertically arranged hole slots.

[0015] By means of the above technical solution, the present invention provides a power battery liquid cooling plate with a pipeline structure, which has at least the following beneficial effects:

[0016] 1. The present invention can effectively improve the overall consumption of the same liquid cooling water when it flows along the liquid cooling pipe by reducing the length of the liquid cooling pipe while increasing the number of liquid cooling pipes. In addition, the branch pipe is connected to the guide pipe to send the liquid cooling water with a lower temperature into the middle area of ​​the liquid cooling pipe to neutralize it with the liquid cooling water with a relatively high temperature, thereby further improving the relative balance of the liquid cooling water temperature in each area of ​​the liquid cooling system, so as to make the cooling reaction faster, respond to heat changes more timely, and improve the dynamic performance of the system.

[0017] 2. In the present invention, a triangular block for intercepting part of the liquid cooling water is added at the connection between the guide pipe and the branch pipe, and the side of the triangular block that first contacts the liquid cooling water is set to be inclined, so that the intercepted liquid cooling water can be effectively guided into the branch pipe. In addition, the branch pipe is provided with a gradually shrinking inner diameter to increase its flow rate, thereby improving the merging effect between the liquid cooling water with a lower temperature and the liquid cooling water with a relatively higher temperature in the middle section of the liquid cooling pipe.

[0018] 3. The present invention uses a diversion structure arranged in a > shape to cause the liquid-cooled water entering the liquid-cooling pipe to collide with the diversion structure, breaking the boundary layer of the liquid-cooling water, thereby optimizing the flow distribution of the liquid-cooling water in the liquid-cooling pipe, making the flow distribution of the liquid-cooling water more uniform, reducing dead zones, and avoiding local overheating or cooling. In addition, a number of holes and grooves opened on the diversion structure are used to promote the turbulence of the liquid-cooling water, thereby improving the overall cooling effect so as to significantly improve the performance and thermal management capabilities of the liquid cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the flow channel plate and the flow distribution component of the present invention;

[0022] Figure 3 Schematic diagram of the planar structure of the flow channel plate of the present invention;

[0023] Figure 4 It is a schematic diagram of the connecting structure between the liquid cooling pipeline and the guide pipeline of the present invention;

[0024] Figure 5 It is a schematic diagram of the split structure of the diversion component of the present invention.

[0025] In the figure: 1. upper sealing plate; 2. liquid inlet pipe; 3. liquid outlet pipe; 4. flow channel plate; 401. extension plate; 402. human-shaped groove; 403. liquid cooling pipe; 404. guide pipe; 405. branch pipe; 406. triangular block; 5. diversion assembly; 501. diversion structure; 502. hole groove; 503. vertical block; 504. reinforcement plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0027] Embodiment 1

[0028] In the liquid cooling plate currently used, the liquid circulation pipeline is usually in a single strip shape. In order to ensure that the liquid is widely distributed, the single liquid circulation pipeline is usually in a multi-stage bend shape. However, in this state, the length of the entire pipeline is increased. When the liquid cooling water just enters the pipeline, the temperature is temporarily low. However, as the liquid cooling water continues to flow in the pipeline, the temperature of the liquid cooling water gradually rises, which affects the temperature of the liquid cooling water in the entire channel. The difference is large, which affects the overall heat dissipation effect. Please refer to Figure 1-Figure 5 In order to effectively improve the balance of the temperature of the liquid cooling water in each area inside the liquid cooling plate, the present embodiment proposes a power battery liquid cooling plate with a pipeline structure, which has a basic structure of an upper sealing plate 1, and a liquid inlet pipe 2 and a liquid outlet pipe 3 are inserted in the middle of one side of the top of the upper sealing plate 1, and the liquid inlet pipe 2 and the liquid outlet pipe 3 are arranged side by side. A flow channel plate 4 that is interconnected with the liquid inlet pipe 2 and the liquid outlet pipe 3 is installed at the bottom of the upper sealing plate 1. Several diversion components 5 installed on the flow channel plate 4 are used to disperse the flow of the cooling fluid, enhance the mixing and heat exchange efficiency of the liquid cooling water, and effectively increase the heat conduction efficiency between the liquid cooling water and the power battery placed on the top of the liquid cooling system, thereby more effectively taking away the heat of the power battery. The upper sealing plate 1 and the flow channel plate 4 are brazed to form a liquid cooling system to ensure the sealing of the liquid cooling system and effectively prevent leakage of liquid cooling water. A number of nuts are used to fix the liquid cooling system along the edges of the system. This provides additional mechanical support for the liquid cooling system and enhances the stability of the overall structure, thereby reducing the risk of loosening due to vibration or thermal expansion and contraction.

[0029] Among them, in this liquid cooling plate, through the external water supply equipment at the top of the liquid inlet pipe 2 and the liquid outlet pipe 3, the liquid cooling water flows from the liquid inlet pipe 2 into the upper sealing plate 1 and the flow channel plate 4, and flows along the set path in the flow channel plate 4, and then flows back to the water supply equipment through the liquid outlet pipe 3 for cooling again, thereby circulating and effectively ensuring the heat dissipation effect of the power battery placed on this liquid cooling plate.

[0030] An extension plate 401 is installed in the middle of one side of the flow channel plate 4, and a human-shaped groove 402 extending to the flow channel plate 4 is provided on the extension plate 401. Liquid cooling pipes 403 arranged in a multi-stage S shape are provided on both sides of the top surface of the flow channel plate 4, and the intersection of the two groups of liquid cooling pipes 403 is connected to the bottom of the liquid outlet pipe 3. Guide pipes 404 connected to the liquid inlet ends of the two liquid cooling pipes 403 are provided at both ends of the human-shaped groove 402 away from the extension plate 401. The top surface of the flow channel plate 4 is also provided with a guide pipe 404 for making the inside of the guide pipe 404 The liquid cooling water merges with the branch pipe 405 in the liquid cooling pipe 403, the width of the liquid cooling pipe 403 is at least twice that of the guide pipe 404, the intersection of the two groups of liquid cooling pipes 403 is in a < shape, and the midpoint of the intersection of the two groups of liquid cooling pipes 403 coincides with the central axis of the flow channel plate 4, the liquid cooling pipe 403 is composed of a plurality of liquid inlet channels, liquid outlet channels and bend channels, and the bend channels are arranged at one end of two adjacent liquid inlet channels and liquid outlet channels, the tail end of the branch pipe 405 is interconnected with the bend channel, and is consistent with the direction of the liquid cooling water in the liquid outlet channel.

[0031] Liquid cooling water is transported from the liquid inlet pipe 2 to the liquid cooling system, first entering the range of the human-shaped groove 402, then divided into two streams and flowing into the two guide pipes 404 respectively, and then flowing along the path of the liquid cooling pipe 403, and finally converging at the intersection of the two liquid cooling pipes 403, and discharged outward along the liquid outlet pipe 3 to the water supply device. In this process, by adjusting the original one-way flow channel between the liquid inlet pipe 2 and the liquid outlet pipe 3 to a two-way flow channel, the total mileage that the liquid cooling water needs to flow in the liquid cooling system can be effectively shortened, and the time that the same liquid cooling water in the liquid cooling channel 403 needs to undergo heat exchange can be reduced, thereby improving the uniformity of heat transfer of the liquid cooling system to a certain extent and avoiding local overheating.

[0032] Secondly, the liquid cooling water entering the guide pipe 404 will also be diverted, with most of the liquid cooling water being sent to the liquid inlet end of the liquid cooling pipe 403 along the trajectory of the guide pipe 404 itself, but a small part of it being merged into the middle area of ​​the liquid cooling pipe 403 along the branch pipe 405, so that the liquid cooling water with a lower temperature is neutralized with the relatively high temperature liquid cooling water whose temperature has risen in the middle area of ​​the liquid cooling pipe 403, thereby effectively reducing the actual temperature of this part of the liquid cooling water, thereby ensuring the relative balance of the liquid cooling water temperature in each area inside the liquid cooling pipe 403, so as to further improve the uniformity, efficiency and dynamic performance of this liquid cooling system for heat transfer.

[0033] It can be seen that in this embodiment, by increasing the number of liquid cooling pipes 403 and reducing the length of the liquid cooling pipes 403, the overall consumption of the same liquid cooling water when flowing along the liquid cooling pipes 403 can be effectively improved. In addition, the branch pipe 405 is connected to the guide pipe 404 to send liquid cooling water with a lower temperature into the middle area of ​​the liquid cooling pipe 403 to neutralize it with the liquid cooling water with a relatively high temperature, thereby further improving the relative balance of the liquid cooling water temperature in each area of ​​this liquid cooling system.

[0034] Embodiment 2

[0035] In order to effectively guide the liquid cooling water in the guide pipe 404 into the branch pipe 405, Figure 2-Figure 4 As shown, the branch pipe 405 is composed of a wide inlet groove arranged in a right-angled trapezoid and a narrow groove arranged in a rectangular shape, and one end of the wide inlet groove is interconnected with the guide pipe 404. A triangular block 406 for guiding part of the liquid cooling water into the branch pipe 405 is installed on the inner wall of the guide pipe 404 close to the branch pipe 405. The side of the triangular block 406 close to the human-shaped channel 402 is inclined, and the angle between one side of the triangular block 406 and the inner wall of the branch pipe 405 is between 120° and 160°. When the liquid cooling water is divided from the human-shaped channel 402 to the two guide pipes 404, according to the original trajectory, the liquid cooling water flows directly along the guide pipe 404 into the liquid inlet end of the liquid cooling pipe 403. However, in this embodiment, part of the liquid cooling water flowing along the guide pipe 404 will be intercepted by the triangular block 406. Since the first side of the triangular block 406 in contact with the liquid cooling water is inclined, the intercepted liquid cooling water can be effectively guided to the inside of the branch pipe 405. In addition, since the inner diameter of the branch pipe 405 from the liquid inlet end to the middle part gradually decreases, the flow rate of the liquid cooling water flowing therein is accelerated, thereby increasing the merging effect between this part of the liquid cooling water with a lower temperature and the liquid cooling water with a relatively higher temperature in the middle section of the liquid cooling pipe 403.

[0036] Embodiment 3

[0037] In order to effectively increase the uniformity of the liquid cooling water flowing in the liquid cooling pipe 403, as shown in FIG. Figure 1 , Figure 2 and Figure 5 As shown, the flow divider assembly 5 is installed in the liquid inlet channel of the liquid cooling pipe 403, and the front and rear rows of flow divider assemblies 5 are arranged in a front-to-back staggered arrangement. After the liquid cooling water enters the liquid cooling pipe 403, as it continues to flow, the liquid cooling water will collide with several rows of flow divider assemblies 5, thereby effectively disrupting the laminar flow state of the liquid cooling water flow, promoting turbulence, so that the newly entered liquid cooling water can be evenly dispersed in the liquid cooling pipe 403 with an increased width, reducing dead zones, and ensuring that the liquid cooling water is evenly distributed, thereby enhancing the mixing of the liquid and the heat exchange efficiency.

[0038] Specifically, the diverter assembly 5 includes a diverter structure 501 installed on the bottom wall of the liquid inlet channel and arranged in a > shape. The internal angle of the diverter structure 501 is between 90° and 120°. The diverter structure 501 is arranged in a > shape, which can avoid generating large resistance to the liquid cooling water on the basis of dispersing the liquid cooling water. A number of holes 502 for disrupting the laminar flow state of the liquid flow are provided on the diverter structure 501. The holes 502 promote the turbulence of the liquid cooling water and enhance the ability to carry away heat, thereby improving the overall cooling effect. A vertical block 503 is provided on the side of the diverter structure 501 away from the guide pipe 404. Two reinforcement plates 504 arranged up and down are installed between the vertical block 503 and the diverter structure 501, and the reinforcement plates 504 are arranged at intervals from the holes 502 arranged up and down. The overall structure formed by the vertical block 503 and the reinforcement plate 504 is mainly used to increase the structural strength of the diverter assembly 5.

[0039] It can be seen that in this embodiment, the diversion structure 501 arranged in a > shape can cause the liquid-cooled water entering the liquid cooling pipe 403 to collide with the diversion structure 501, breaking the boundary layer of the liquid-cooled water, thereby optimizing the flow distribution of the liquid-cooled water in the liquid cooling pipe, making the flow distribution of the liquid-cooled water more uniform, reducing dead zones, and avoiding local overheating or cooling. In addition, the plurality of holes 502 opened on the diversion structure 501 are used to promote the turbulence of the liquid-cooled water, thereby improving the overall cooling effect so as to significantly improve the performance and thermal management capabilities of the liquid cooling plate.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power battery liquid cooling plate with a pipeline structure, comprising an upper sealing plate (1), characterized in that: A liquid inlet pipe (2) and a liquid outlet pipe (3) are inserted in the middle of one side of the top of the upper sealing plate (1), and the liquid inlet pipe (2) and the liquid outlet pipe (3) are arranged side by side. A flow channel plate (4) which is interconnected with the liquid inlet pipe (2) and the liquid outlet pipe (3) is installed at the bottom of the upper sealing plate (1), and a plurality of flow distribution components (5) for dispersing the flow of cooling fluid are installed on the flow channel plate (4); An extension plate (401) is installed in the middle of one side of the flow channel plate (4), and a human-shaped groove (402) extending to the flow channel plate (4) is provided on the extension plate (401). Liquid cooling pipes (403) arranged in a multi-stage S shape are provided on both sides of the top surface of the flow channel plate (4), and the intersection of the two groups of liquid cooling pipes (403) is interconnected with the bottom of the liquid outlet pipe (3). Guide pipes (404) interconnected with the liquid inlet ends of the two liquid cooling pipes (403) are provided at both ends of the human-shaped groove (402) away from the extension plate (401). A branch pipe (405) for merging the liquid cooling water in the guide pipe (404) with the liquid cooling water in the liquid cooling pipe (403) is also provided on the top surface of the flow channel plate (4).

2. The power battery liquid cooling plate with a pipeline structure according to claim 1, characterized in that: The width of the liquid cooling pipe (403) is at least twice that of the guide pipe (404), the intersection of the two groups of liquid cooling pipes (403) is in a < shape, and the midpoint of the intersection of the two groups of liquid cooling pipes (403) coincides with the central axis of the flow channel plate (4).

3. The power battery liquid cooling plate with a pipeline structure according to claim 2, characterized in that: The liquid cooling pipeline (403) is composed of a plurality of liquid inlet channels, liquid outlet channels and curved channels, and the curved channels are arranged at one end of two adjacent liquid inlet channels and liquid outlet channels; The tail end of the branch pipe (405) is in communication with the curved channel and has the same direction as the liquid cooling water in the liquid outlet channel.

4. The power battery liquid cooling plate with a pipeline structure according to claim 1, characterized in that: The branch pipe (405) is composed of a wide inlet groove arranged in a right-angle trapezoidal shape and a narrow groove arranged in a rectangular shape, and one end of the wide inlet groove is interconnected with the guide pipe (404).

5. The power battery liquid cooling plate with a pipeline structure according to claim 4, characterized in that: A triangular block (406) for guiding part of the liquid cooling water into the branch pipe (405) is installed on the inner wall of one side of the guide pipe (404) close to the branch pipe (405), and the side of the triangular block (406) close to the human-shaped channel (402) is inclined, and the angle between one side of the triangular block (406) and the inner wall of the branch pipe (405) is between 120° and 160°.

6. The power battery liquid cooling plate with a pipeline structure according to claim 1, characterized in that: The flow diverter assembly (5) is installed in a liquid inlet channel in the liquid cooling pipe (403), and the front and rear rows of flow diverter assemblies (5) are arranged in a front-to-back staggered manner.

7. The power battery liquid cooling plate with a pipeline structure according to claim 6, characterized in that: The flow diversion component (5) comprises a flow diversion structure (501) installed on the bottom wall of the liquid inlet channel and arranged in a > shape, the inner angle of the flow diversion structure (501) is between 90° and 120°, and a plurality of holes (502) for disrupting the laminar flow state of the liquid are provided on the flow diversion structure (501).

8. The power battery liquid cooling plate with a pipeline structure according to claim 7, characterized in that: A vertical block (503) is provided on one side of the diversion structure (501) away from the guide pipe (404), and two vertically arranged reinforcing plates (504) are installed between the vertical block (503) and the diversion structure (501), and the reinforcing plates (504) are arranged at intervals from the vertically arranged hole grooves (502).

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