Immersed efficient liquid cooling plate for heat dissipation of battery

Abstract

The invention belongs to the technical field of energy storage batteries, and particularly relates to an immersed efficient liquid cooling plate for battery heat dissipation, the liquid cooling plate is composed of a flow channel plate, turbulent flow cooling fins, an upper cover plate, a cross beam and two water nozzles from bottom to top, the two water nozzles are a water inlet nozzle and a water outlet nozzle, five supporting beams are installed at the bottom of the flow channel plate in a rectangular array distribution mode, and the bottom of the flow channel plate is provided with an upper cover plate and a lower cover plate. And four battery modules are distributed on the upper surface of the upper cover plate in a rectangular array. According to the liquid cooling plate for heat dissipation of the immersed high-efficiency battery, the liquid cooling plate composed of the runner plate, the turbulent flow cooling fins, the upper cover plate, the cross beam and the water nozzles is arranged, and the runner plate, the turbulent flow cooling fins, the upper cover plate, the cross beam and the water nozzles are manufactured and formed through an all-aluminum piece assembly integrated brazing process; due to the design shapes of the snakelike wide flow channels on the surface of the flow channel plate and the turbulent flow cooling fins, the strength of the liquid cooling plate is further enhanced, the highest efficiency of a liquid cooling medium is increased, heat generated by the battery module is taken away to the maximum extent, and the effect of improving the heat exchange efficiency is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage batteries, and particularly relates to a liquid cooling plate for efficient immersion battery heat dissipation. Background Art

[0002] With the rapid development of the battery industry, the heat dissipation problem has become increasingly prominent. Due to its advantages such as high thermal conductivity, uniform heat dissipation, and low energy consumption, liquid cooling technology has gradually become one of the main technologies for solving the battery heat dissipation problem. The liquid cooling plate for efficient immersion battery heat dissipation is an advanced heat dissipation technology, mainly used for battery thermal management, especially in the fields of new energy vehicles and energy storage power stations.

[0003] However, the liquid cooling method still has problems such as insufficient battery heat dissipation efficiency and poor temperature uniformity. The traditional immersion bottom plate only immerses the upper surface of the battery module and the liquid cooling plate in the immersion liquid, and its heat absorption and heat transfer capabilities are relatively low. Therefore, it is necessary to optimize the structural design of the liquid cooling plate to improve its heat exchange efficiency and temperature uniformity, so that it can be applied to energy storage products. Summary of the Invention

[0004] Based on the above-mentioned technical problems, the present invention proposes a liquid cooling plate for efficient immersion battery heat dissipation.

[0005] A liquid cooling plate for efficient immersion battery heat dissipation proposed by the present invention is composed of a flow channel plate, a turbulator heat dissipation fin, an upper cover plate, a cross beam, and two nozzles from bottom to top. The two nozzles are an inlet nozzle and an outlet nozzle respectively. Five support beams are installed at the bottom of the flow channel plate in a rectangular array distribution. Four battery modules are arranged on the upper surface of the upper cover plate in a rectangular array distribution. The two cross beams are symmetrically installed on both sides of the upper surface of the upper cover plate, and the four battery modules are arranged between the two cross beams.

[0006] Preferably, a serpentine wide flow channel is opened on the upper surface of the flow channel plate, and the serpentine wide flow channel is respectively communicated with the two nozzles.

[0007] Through the above technical solution, the flow channel on the flow channel plate is set to be serpentine and tortuous, which can accommodate a longer flow channel in a limited space, thereby increasing the residence time of the liquid cooling medium on the flow channel plate, improving the heat exchange efficiency. At the same time, the wide flow channel can reduce the flow rate of the liquid cooling medium, so that the heat has more time to transfer from the heat source to the liquid cooling medium, achieving a more uniform heat dissipation effect, and the serpentine flow channel will increase the structural strength of the flow channel plate.

[0008] Preferably, the material of the turbulator heat dissipation fin is aluminum alloy, and the upper and lower surfaces of the turbulator heat dissipation fin are both set to be flat.

[0009] Through the above technical scheme, the aluminum alloy has a very high thermal conductivity. At the same time, the aluminum alloy can improve its corrosion resistance and prevent corrosion by liquid cooling medium, thereby extending the service life of the liquid cooling plate. In addition, since the upper and lower surfaces of the spoiler heat sink are both flat, the spoiler heat sink can be fully contacted with the surface of the upper cover plate and the flow channel plate respectively, which is convenient for subsequent brazing into an integrated structure, thereby significantly increasing its strength.

[0010] Preferably, the spoiler fin is arranged between the upper cover plate and the flow channel plate, the upper cover plate is located on the upper surface of the spoiler fin, the flow channel plate is located on the lower surface of the spoiler fin, and the longitudinal section of the spoiler fin is set to square corrugation.

[0011] Through the above technical solution, the spoiler fin acts as a corrugated structural layer. The overall strength of the spoiler fin is increased through its square corrugated design. When subjected to external pressure, it can effectively disperse and absorb force, thereby reducing the impact on a single point, improving good support, and having higher compressive strength. The aluminum alloy material of the spoiler fin is light in weight, which can reduce the overall weight while maintaining the structural strength.

[0012] Preferably, the surface of the spoiler cooling fin is arranged as a staggered tooth structure.

[0013] Through the above technical scheme, wide transverse and longitudinal convection channels can be formed on its surface, which not only facilitates the uniform circulation of liquid cooling medium in the channel to form a turbulent vortex structure, but also facilitates the increase of the heat transfer contact area between the liquid cooling medium and the aluminum alloy, thereby removing the heat generated by the battery module with the highest efficiency and maximum limit.

[0014] Preferably, the support beam is made of aluminum alloy, and microchannels are distributed and penetrated through the side surface of the support beam in a rectangular array.

[0015] Through the above technical solution, the aluminum alloy has good mechanical strength and can withstand certain pressure and vibration, which makes it easier to support the liquid cooling plate and the battery module as a whole. The opening of the microchannel makes the interior of the support beam hollow, which can reduce the amount of material used and further reduce weight and volume. The microchannel structure can greatly increase the contact area between the liquid cooling medium and the support beam, thereby improving the heat exchange efficiency, while helping to evenly distribute heat inside the support beam and reduce local overheating.

[0016] Preferably, a concave cover shell is fixedly mounted on the upper surface of the upper cover plate by screws, a sealing strip is fixedly connected to the surface of the concave cover shell, and a lower surface of the sealing strip is in compression contact with the upper surface of the upper cover plate.

[0017] Through the above technical solution, it is convenient to immerse the liquid cooling medium in the battery module surface, and use sealing strips to prevent the liquid cooling medium from flowing in. At the same time, epoxy resin coating is applied to the surface of the screws. The epoxy resin coating has excellent chemical resistance and heat resistance, and can resist the chemical properties of the liquid cooling medium to achieve a corrosion-resistant effect.

[0018] Preferably, a temperature sensor with a display is fixedly mounted on one side of the upper surface of the concave cover shell, the contacts of the temperature sensor extend into the concave cover shell, and a pressure relief valve is fixedly mounted on the other side of the upper surface of the concave cover shell.

[0019] Through the above technical solution, the temperature sensor monitors the temperature inside the concave cover and displays the detected data through the display, so as to achieve the effect of real-time temperature monitoring. The pressure relief valve is set to a specific opening pressure value. When the pressure inside the concave cover exceeds the safety limit, it automatically opens to release excess pressure to protect the concave cover from damage due to overpressure, and automatically closes after the pressure is reduced to maintain normal operation.

[0020] Preferably, a concave shell is provided on the outer surface of the support beam, and the upper surface of the flow channel plate is provided with through holes distributed in a rectangular array, and a liquid inlet connected to the through holes is provided on the upper surface of the support beam, and the liquid inlet is connected to the microchannel.

[0021] Through the above technical solution, the concave shell holds the liquid cooling medium, and the liquid cooling medium enters the microchannel of the support beam through the perforation and the liquid inlet, or the liquid cooling medium directly falls into the concave shell, thereby achieving the heat dissipation effect on the battery module.

[0022] The beneficial effects of the present invention are:

[0023] 1. A liquid cooling plate consisting of a flow channel plate, a spoiler fin, an upper cover plate, a crossbeam and a water nozzle is provided, and the flow channel plate, the spoiler fin, the upper cover plate, the crossbeam and the water nozzle are assembled and formed by a brazing process of all-aluminum parts. Due to the serpentine wide flow channel on the surface of the flow channel plate and the shape of the spoiler fin design, the strength of the liquid cooling plate is further enhanced, and the maximum efficiency of the liquid cooling medium is increased, and the heat generated by the battery module is taken away to the maximum extent, so as to achieve the effect of improving the heat exchange efficiency.

[0024] 2. By setting up a support beam, the liquid cooling plate and the battery module are supported as a whole, and the perforations on the flow channel plate are connected to the liquid inlet on the support beam, so that the liquid cooling medium can pass through the microchannel to increase the contact area between the liquid cooling medium and the support beam, thereby improving the heat exchange efficiency. At the same time, it helps to evenly distribute the heat inside the support beam, reduce local overheating, and achieve a heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1Schematic diagram of a liquid cooling plate for immersion type high-efficiency battery heat dissipation proposed by the present invention;

[0026] Figure 2 Three-dimensional view of the upper cover plate structure of a liquid cooling plate for immersion type high-efficiency battery heat dissipation proposed by the present invention;

[0027] Figure 3 Three-dimensional view of the flow disturbance heat dissipation fin structure of a liquid cooling plate for immersion type high-efficiency battery heat dissipation proposed by the present invention;

[0028] Figure 4 Three-dimensional view of the flow channel plate structure of a liquid cooling plate for immersion type high-efficiency battery heat dissipation proposed by the present invention;

[0029] Figure 5 Three-dimensional view of the support beam structure of a liquid cooling plate for immersion type high-efficiency battery heat dissipation proposed by the present invention;

[0030] Figure 6 Three-dimensional view of the concave-shaped housing structure of a liquid cooling plate for immersion type high-efficiency battery heat dissipation proposed by the present invention;

[0031] Figure 7 Three-dimensional view of the concave-shaped cover structure of a liquid cooling plate for immersion type high-efficiency battery heat dissipation proposed by the present invention.

[0032] In the figure: 1. Liquid cooling plate; 11. Flow channel plate; 111. Serpentine wide flow channel; 112. Perforation; 12. Flow disturbance heat dissipation fin; 13. Upper cover plate; 14. Cross beam; 15. Water inlet nozzle; 16. Water outlet nozzle; 2. Support beam; 21. Micro-channel; 22. Liquid inlet; 3. Battery module; 4. Concave-shaped cover; 5. Sealing strip; 6. Temperature sensor; 7. Pressure relief valve; 8. Concave-shaped housing. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying 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.

[0034] Refer to Figures 1-7 , a liquid cooling plate for immersion type high-efficiency battery heat dissipation, the liquid cooling plate 1 is composed of a flow channel plate 11, a flow disturbance heat dissipation fin 12, an upper cover plate 13, a cross beam 14 and two water nozzles from bottom to top. The two water nozzles are respectively a water inlet nozzle 15 and a water outlet nozzle 16. Five support beams 2 are installed at the bottom of the flow channel plate 11 in a rectangular array distribution. Four battery modules 3 are arranged on the upper surface of the upper cover plate 13 in a rectangular array distribution. The two cross beams 14 are symmetrically installed on both sides of the upper surface of the upper cover plate 13. The four battery modules 3 are arranged between the two cross beams 14.

[0035] In order to improve the heat exchange efficiency, a serpentine wide flow channel 111 is opened on the upper surface of the flow channel plate 11, and the serpentine wide flow channel 111 is connected to two water nozzles respectively. The flow channel on the flow channel plate 11 is set to be serpentine, so that a longer flow channel can be accommodated in a limited space, thereby increasing the residence time of the liquid-cooling medium on the flow channel plate 11 and improving the heat exchange efficiency. At the same time, the wide flow channel can reduce the flow rate of the liquid-cooling medium, so that heat has more time to be transferred from the heat source to the liquid-cooling medium, achieving a more uniform heat dissipation effect, and the serpentine flow channel will increase the structural strength of the flow channel plate 11.

[0036] In order to improve the thermal conductivity of the spoiler heat sink 12, the material of the spoiler heat sink 12 is aluminum alloy, and the upper and lower surfaces of the spoiler heat sink 12 are set to be flat. Aluminum alloy has a very high thermal conductivity coefficient. At the same time, aluminum alloy can improve its corrosion resistance and prevent corrosion by liquid cooling medium, thereby extending the service life of the liquid cooling plate 1. In addition, since the upper and lower surfaces of the spoiler heat sink are both flat, the spoiler heat sink 12 can fully contact the surfaces of the upper cover plate 13 and the flow channel plate 11 respectively, which is convenient for subsequent brazing into an integrated structure, thereby significantly increasing its strength.

[0037] In order to increase the strength of the liquid cooling plate 1, the spoiler heat sink 12 is arranged between the upper cover plate 13 and the flow channel plate 11. The upper cover plate 13 is located on the upper surface of the spoiler heat sink 12, and the flow channel plate 11 is located on the lower surface of the spoiler heat sink 12. The longitudinal section of the spoiler heat sink 12 is arranged as a square corrugation, so that the spoiler heat sink 12 acts as a corrugated structure layer. The overall strength of the spoiler heat sink 12 is increased through its square corrugated design. When subjected to external pressure, it can effectively disperse and absorb force, thereby reducing the impact on a single point, improving good support, and having higher compressive strength. The aluminum alloy material of the spoiler heat sink 12 is light in weight, which can reduce the overall weight while maintaining the structural strength.

[0038] In order to improve the heat dissipation efficiency, the surface of the spoiler heat sink 12 is set to a staggered tooth structure so that its surface can form wide transverse and longitudinal convection channels, which not only facilitates the uniform circulation of the liquid cooling medium in the channel to form a turbulent vortex structure, but also facilitates the increase of the heat transfer contact area between the liquid cooling medium and the aluminum alloy, thereby taking away the heat generated by the battery module 3 with the highest efficiency and to the maximum extent.

[0039] A liquid cooling plate 1 consisting of a flow channel plate 11, a spoiler fin 12, an upper cover plate 13, a cross beam 14 and a water nozzle is provided, and the flow channel plate 11, the spoiler fin 12, the upper cover plate 13, the cross beam 14 and the water nozzle are manufactured by an all-aluminum assembly and brazing process. Due to the serpentine wide flow channel 111 on the surface of the flow channel plate 11 and the shape of the spoiler fin 12, the strength of the liquid cooling plate 1 is further enhanced, and the maximum efficiency of the liquid cooling medium is increased, and the heat generated by the battery module 3 is taken away to the maximum extent, thereby achieving the effect of improving the heat exchange efficiency.

[0040] To facilitate uniform heat dispersion, the support beam 2 is made of aluminum alloy. The side surface of the support beam 2 is provided with micro-channels 21 distributed in a rectangular array. Aluminum alloy has good mechanical strength and can withstand a certain amount of pressure and vibration, thus facilitating the overall support of the liquid cooling plate 1 and the battery module 3. By opening the micro-channels 21, the interior of the support beam 2 is in a hollow state, which can reduce the material usage, further reduce the weight and volume. Moreover, the micro-channel 21 structure can significantly increase the contact area between the liquid cooling medium and the support beam 2, thereby improving the heat exchange efficiency and helping to evenly distribute the heat inside the support beam 2, reducing the phenomenon of local overheating.

[0041] To prevent the liquid cooling medium from damaging the battery module, a concave cover 4 is fixedly installed on the upper surface of the upper cover plate 13 by screws. A sealing strip 5 is fixedly connected to the surface of the concave cover 4. The lower surface of the sealing strip 5 is in pressing contact with the upper surface of the upper cover plate 13, facilitating the immersion of the liquid cooling medium on the surface of the battery module 3 and using the sealing strip 5 to prevent the liquid cooling medium from flowing in. At the same time, the surface of the screw is coated with epoxy resin coating, which has excellent chemical resistance and heat resistance and can resist the chemical properties of the liquid cooling medium, achieving the effect of corrosion resistance.

[0042] To monitor the temperature in real time, a temperature sensor 6 with a display is fixedly installed on one side of the upper surface of the concave cover 4. The contact point of the temperature sensor 6 extends into the concave cover 4. A pressure relief valve 7 is fixedly installed on the other side of the upper surface of the concave cover 4. The temperature sensor 6 monitors the temperature inside the concave cover 4 and displays the detected data through the display, achieving the effect of real-time temperature monitoring. The pressure relief valve 7 is set to a specific opening pressure value and automatically opens when the pressure inside the concave cover 4 exceeds the safety limit to release the excess pressure, protecting the concave cover 4 from being damaged due to overpressure, and automatically closing after the pressure drops to maintain normal operation.

[0043] To facilitate the immersion of the battery module 3, a concave housing 8 is provided on the outer surface of the support beam 2. The upper surface of the flow channel plate 11 is provided with through holes 112 distributed in a rectangular array. The upper surface of the support beam 2 is provided with a liquid inlet 22 communicating with the through holes 112, and the liquid inlet 22 is communicated with the micro-channels 21. The concave housing 8 holds the liquid cooling medium, and the liquid cooling medium enters the micro-channels 21 of the support beam 2 through the through holes 112 and the liquid inlet 22 or directly falls into the concave housing 8, realizing the heat dissipation effect on the battery module 3.

[0044] By setting up the support beam 2, the liquid cooling plate 1 and the battery module 3 are supported as a whole, and the perforation 112 on the flow channel plate 11 is connected with the liquid inlet 22 on the support beam 2, so that the liquid cooling medium can pass through the microchannel 21 to increase the contact area between the liquid cooling medium and the support beam 2, thereby improving the heat exchange efficiency, and at the same time helping to evenly distribute the heat inside the support beam 2, reducing local overheating and achieving a heat dissipation effect.

[0045] Working principle: When in use, the liquid cooling plate 1 formed by brazing the flow channel plate 11, the spoiler fins 12, the upper cover plate 13, the cross beam 14 and the water nozzle is welded to the support beam 2, and then placed in the concave shell 8, and the concave cover shell 4 and the upper cover plate 13 are installed together by screws, so that the sealing strip 5 seals the gap between the concave cover shell and the upper cover plate 13;

[0046] The liquid cooling medium enters the serpentine wide channel 111 on the channel plate 11 through the water inlet 15, so that the serpentine wide channel 111 is filled with the liquid cooling medium, and the liquid cooling medium enters the microchannel 21 of the support beam 2 through the perforation 112 and the liquid inlet 22 in turn, and enters the concave shell 8 along the microchannel 21, so that the liquid cooling medium is immersed, and at the same time, the liquid cooling medium flows evenly in the spoiler heat sink 12 to form a turbulent vortex structure, which increases the contact area, so that it can take away the heat generated by the battery module 3 in the concave cover 4 with the highest efficiency and to the maximum extent, and at the same time, the liquid cooling medium flows out through the water outlet 16, so as to achieve the effect of recycling;

[0047] The temperature sensor 6 monitors the temperature in the concave housing 4 in real time and displays the temperature value on a display for easy observation. The pressure relief valve 7 provides safety protection for the pressure in the concave housing 4 .

[0048] 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. An immersion type high-efficiency battery cooling liquid cooling plate, characterized in that: The liquid cooling plate (1) is composed of a flow channel plate (11), a spoiler heat sink (12), an upper cover plate (13), a cross beam (14) and two water nozzles from bottom to top, wherein the two water nozzles are a water inlet nozzle (15) and a water outlet nozzle (16), respectively; five support beams (2) are installed in a rectangular array at the bottom of the flow channel plate (11); four battery modules (3) are installed in a rectangular array on the upper surface of the upper cover plate (13); the two cross beams (14) are symmetrically installed on both sides of the upper surface of the upper cover plate (13); and the four battery modules (3) are arranged between the two cross beams (14).

2. The liquid cooling plate for immersion-type high-efficiency battery heat dissipation according to claim 1, characterized in that: A serpentine wide flow channel (111) is provided on the upper surface of the flow channel plate (11), and the serpentine wide flow channel (111) is respectively connected to the two water nozzles.

3. The liquid cooling plate for immersion-type high-efficiency battery heat dissipation according to claim 1, characterized in that: The spoiler fin (12) is made of aluminum alloy, and the upper and lower surfaces of the spoiler fin (12) are both arranged to be planes.

4. The liquid cooling plate for immersion-type high-efficiency battery heat dissipation according to claim 1, characterized in that: The spoiler fin (12) is arranged between the upper cover plate (13) and the flow channel plate (11); the upper cover plate (13) is located on the upper surface of the spoiler fin (12); the flow channel plate (11) is located on the lower surface of the spoiler fin (12); and the longitudinal section of the spoiler fin (12) is arranged to be a square corrugation.

5. The liquid cooling plate for immersion-type high-efficiency battery heat dissipation according to claim 1, characterized in that: The surface of the spoiler cooling fin (12) is arranged in a staggered tooth structure.

6. The liquid cooling plate for immersion-type high-efficiency battery heat dissipation according to claim 1, characterized in that: The support beam (2) is made of aluminum alloy, and microchannels (21) are distributed and penetrated through the side surface of the support beam (2) in a rectangular array.

7. The liquid cooling plate for immersion-type high-efficiency battery heat dissipation according to claim 6, characterized in that: A concave cover shell (4) is fixedly mounted on the upper surface of the upper cover plate (13) by means of screws, a sealing strip (5) is fixedly connected to the surface of the concave cover shell (4), and a lower surface of the sealing strip (5) is in compression contact with the upper surface of the upper cover plate (13).

8. The liquid cooling plate for immersion-type high-efficiency battery heat dissipation according to claim 7, characterized in that: A temperature sensor (6) with a display is fixedly mounted on one side of the upper surface of the concave cover shell (4), the contact of the temperature sensor (6) extends into the concave cover shell (4), and a pressure relief valve (7) is fixedly mounted on the other side of the upper surface of the concave cover shell (4).

9. The liquid cooling plate for immersion-type high-efficiency battery heat dissipation according to claim 8, characterized in that: The outer surface of the support beam (2) is provided with a concave shell (8), the upper surface of the flow channel plate (11) is provided with through holes (112) distributed in a rectangular array, the upper surface of the support beam (2) is provided with a liquid inlet (22) connected to the through holes (112), and the liquid inlet (22) is connected to the microchannel (21).

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