Submerged high-efficiency liquid cooling plate for battery heat dissipation

Abstract

The application belongs to the technical field of energy storage batteries, and particularly relates to an immersed high-efficiency liquid cooling plate for battery heat dissipation, which is composed of a flow channel plate, a turbulence heat dissipation fin, an upper cover plate, a cross beam and two water nozzles from bottom to top. The two water nozzles are respectively an inlet water nozzle and an outlet water nozzle. The bottom of the flow channel plate is provided with five support beams in a rectangular array. The upper surface of the upper cover plate is provided with four battery modules in a rectangular array. The immersed high-efficiency liquid cooling plate for battery heat dissipation is manufactured by assembling and integrally brazing the flow channel plate, the turbulence heat dissipation fin, the upper cover plate, the cross beam and the water nozzles through an all-aluminum piece. The strength of the liquid cooling plate is further strengthened due to the serpentine wide flow channel on the surface of the flow channel plate and the shape of the turbulence heat dissipation fin. The maximum efficiency of the liquid cooling medium is increased, and the heat generated by the battery modules is maximally taken away, so that the heat exchange efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of energy storage battery technology, and in particular to an immersion-type high-efficiency battery heat dissipation liquid cooling plate. Background Technology

[0002] With the rapid development of the battery industry, heat dissipation has become an increasingly prominent issue. Liquid cooling technology, due to its advantages such as high thermal conductivity, uniform heat dissipation, and low energy consumption, has gradually become one of the main technologies for solving battery heat dissipation problems. Immersion-type high-efficiency battery cooling liquid cooling plates are an advanced heat dissipation technology, mainly used for battery thermal management, especially in fields such as new energy vehicles and energy storage power stations.

[0003] However, liquid cooling still suffers from insufficient battery heat dissipation efficiency and poor temperature uniformity. Traditional immersion base plates only contact the battery module and the upper surface of the liquid cooling plate with the immersion liquid, resulting in relatively low heat absorption and transfer capabilities. Therefore, it is necessary to optimize the structural design of the liquid cooling plate to improve its heat exchange efficiency and temperature uniformity, enabling its application in energy storage products. Summary of the Invention

[0004] Based on the aforementioned technical problems, this invention proposes an immersion-type high-efficiency battery heat dissipation liquid cooling plate.

[0005] This invention proposes an immersion-type high-efficiency battery heat dissipation liquid cooling plate, which consists of a flow channel plate, a turbulence heat dissipation fin, a top cover plate, crossbeams, and two water nozzles from bottom to top. The two water nozzles are a water inlet and a water outlet, respectively. Five support beams are installed in a rectangular array at the bottom of the flow channel plate. Four battery modules are arranged in a rectangular array on the upper surface of the top cover plate. The two crossbeams are symmetrically distributed on both sides of the upper surface of the top cover plate, and the four battery modules are arranged between the two crossbeams.

[0006] Preferably, the upper surface of the flow channel plate is provided with a serpentine wide flow channel, which is connected to the two water nozzles respectively.

[0007] By using the above technical solution, the flow channels on the flow channel plate are set in a serpentine pattern, which can accommodate longer flow channels in a limited space, thereby increasing the residence time of the liquid cooling medium on the flow channel plate and improving the heat exchange efficiency. At the same time, the wide flow channels can reduce the flow velocity of the liquid cooling medium, allowing more time for heat to be transferred from the heat source to the liquid cooling medium, achieving a more uniform heat dissipation effect. In addition, the serpentine flow channels increase the structural strength of the flow channel plate.

[0008] Preferably, the heat sink is made of aluminum alloy, and both the upper and lower surfaces of the heat sink are planar.

[0009] Through the above technical solution, aluminum alloy has a high thermal conductivity, and at the same time, aluminum alloy can improve its corrosion resistance, prevent corrosion by liquid cooling medium, thereby extending the service life of liquid cooling plate. Furthermore, since the upper and lower surfaces of the baffle heat sink are both flat, the baffle heat sink can make full contact with the surface of the upper cover plate and the flow channel plate respectively, which facilitates subsequent brazing into an integrated structure and significantly increases its strength.

[0010] Preferably, the turbulence-reducing heat sink is disposed between the upper cover plate and the flow channel plate, the upper cover plate is located on the upper surface of the turbulence-reducing heat sink, the flow channel plate is located on the lower surface of the turbulence-reducing heat sink, and the longitudinal section of the turbulence-reducing heat sink is configured as square corrugations.

[0011] The above technical solution enables the turbulence heat sink to act as a corrugated structural layer. Its square corrugated design increases the overall strength of the turbulence heat sink. When subjected to external pressure, it can effectively disperse and absorb the force, thereby reducing the impact on individual points, improving good support, and having higher compressive strength. In addition, the aluminum alloy material of the turbulence heat sink is lightweight, which can reduce the overall weight while maintaining structural strength.

[0012] Preferably, the surface of the turbulence heat sink is configured with a staggered tooth structure.

[0013] The above technical solution enables the formation of wide convection channels in both the horizontal and vertical directions on its surface. This not only facilitates the uniform flow of the liquid cooling medium within the channels, forming a turbulent vortex structure, but also increases the heat transfer contact area between the liquid cooling medium and the aluminum alloy, thereby maximizing the removal of heat generated by the battery module.

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

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

[0016] Preferably, a concave cover is fixedly installed on the upper surface of the upper cover plate by screws, and a sealing strip is fixedly connected to the surface of the concave cover plate, with the lower surface of the sealing strip pressing against the upper surface of the upper cover plate.

[0017] The above technical solution facilitates the immersion of the liquid cooling medium on the surface of the battery module, and uses a sealing strip to prevent the liquid cooling medium from flowing in. At the same time, the screw surface is coated with epoxy resin paint, which has excellent chemical resistance and heat resistance, and can resist the chemical properties of the liquid cooling medium to achieve corrosion resistance.

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

[0019] Through the above technical solution, the temperature sensor monitors the temperature inside the concave housing and displays the detected data on the display, achieving the effect of real-time temperature monitoring. The pressure relief valve is set with a specific opening pressure value, which automatically opens when the pressure inside the concave housing exceeds the safety limit to release excess pressure, thereby protecting the concave housing from damage due to overpressure. It also automatically closes after the pressure decreases to maintain normal operation.

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

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

[0022] The beneficial effects of this invention are as follows:

[0023] 1. By setting up a liquid cooling plate consisting of a flow channel plate, a turbulent heat sink, a top cover plate, a crossbeam, and a water nozzle, and by manufacturing the flow channel plate, the turbulent heat sink, the top cover plate, the crossbeam, and the water nozzle through a brazing process of all-aluminum parts assembly, the strength of the liquid cooling plate is further enhanced due to the serpentine wide flow channel on the surface of the flow channel plate and the shape of the turbulent heat sink design, and the maximum efficiency of the liquid cooling medium is increased, maximizing the removal of heat generated by the battery module, thereby improving the heat exchange efficiency.

[0024] 2. By setting up a support beam, the liquid cooling plate and 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. This allows the liquid cooling medium to pass through the microchannels, increasing the contact area between the liquid cooling medium and the support beam, thereby improving heat exchange efficiency. At the same time, it helps to distribute heat evenly inside the support beam, reducing local overheating and achieving a heat dissipation effect. Attached Figure Description

[0025] Figure 1This is a schematic diagram of an immersion-type high-efficiency battery heat dissipation liquid cooling plate proposed in this invention;

[0026] Figure 2 This is a perspective view of the upper cover structure of a liquid cooling plate for immersion-type high-efficiency battery heat dissipation proposed in this invention;

[0027] Figure 3 This is a three-dimensional view of the turbulence heat sink structure of an immersion-type high-efficiency battery heat dissipation liquid cooling plate proposed in this invention;

[0028] Figure 4 This is a perspective view of the flow channel plate structure of a liquid cooling plate for immersion-type high-efficiency battery heat dissipation proposed in this invention;

[0029] Figure 5 This is a perspective view of the support beam structure of a liquid cooling plate for immersion-type high-efficiency battery heat dissipation proposed in this invention.

[0030] Figure 6 This is a perspective view of the concave shell structure of a liquid cooling plate for immersion high-efficiency battery heat dissipation proposed in this invention;

[0031] Figure 7 This is a perspective view of the concave cover structure of a liquid cooling plate for immersion high-efficiency battery heat dissipation proposed in this invention.

[0032] In the diagram: 1. Liquid cooling plate; 11. Flow channel plate; 111. Serpentine wide flow channel; 112. Perforation; 12. Turbulent heat sink; 13. Top cover plate; 14. Crossbeam; 15. Water inlet; 16. Water outlet; 2. Support beam; 21. Microchannel; 22. Liquid inlet; 3. Battery module; 4. Concave cover; 5. Sealing strip; 6. Temperature sensor; 7. Pressure relief valve; 8. Concave housing. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

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

[0035] To improve heat exchange efficiency, a serpentine wide flow channel 111 is formed on the upper surface of the flow channel plate 11. The serpentine wide flow channel 111 is connected to two water nozzles respectively. The flow channel on the flow channel plate 11 is set in a serpentine shape, 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 11 and improving the heat exchange efficiency. At the same time, the wide flow channel can reduce the flow velocity of the liquid cooling medium, allowing more time for heat to be transferred from the heat source to the liquid cooling medium, achieving a more uniform heat dissipation effect. In addition, the serpentine flow channel increases the structural strength of the flow channel plate 11.

[0036] To improve the thermal conductivity of the turbulence heat sink 12, the turbulence heat sink 12 is made of aluminum alloy, and both the upper and lower surfaces of the turbulence heat sink 12 are set as planes. Aluminum alloy has a high thermal conductivity, and at the same time, aluminum alloy can improve its corrosion resistance, prevent corrosion by liquid cooling medium, thereby extending the service life of liquid cooling plate 1. Furthermore, since both the upper and lower surfaces of the turbulence heat sink are planes, the turbulence heat sink 12 can make full contact with the surfaces of the upper cover plate 13 and the flow channel plate 11, which facilitates subsequent brazing into an integrated structure and significantly increases its strength.

[0037] To increase the strength of the liquid cooling plate 1, a turbulent heat sink 12 is disposed 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 turbulent heat sink 12, and the flow channel plate 11 is located on the lower surface of the turbulent heat sink 12. The longitudinal section of the turbulent heat sink 12 is set as square corrugated, so that the turbulent heat sink 12 acts as a corrugated structural layer. The square corrugated design increases the overall strength of the turbulent heat sink 12. When subjected to external pressure, it can effectively disperse and absorb the force, thereby reducing the impact on a single point, improving good support, and having higher compressive strength. Moreover, the aluminum alloy material of the turbulent heat sink 12 is lightweight, which can reduce the overall weight while maintaining structural strength.

[0038] To improve heat dissipation efficiency, the surface of the turbulent heat sink 12 is designed with a staggered tooth structure, which enables the surface to form wide convection channels in the horizontal and vertical directions. This not only facilitates the uniform flow of the liquid cooling medium in the channels and forms a turbulent vortex structure, but also increases the heat transfer contact area between the liquid cooling medium and the aluminum alloy, thereby removing the heat generated by the battery module 3 with the highest efficiency and maximum extent.

[0039] By setting up a liquid cooling plate 1 consisting of a flow channel plate 11, a turbulent heat sink 12, an upper cover plate 13, a crossbeam 14, and a water nozzle, and by manufacturing the flow channel plate 11, the turbulent heat sink 12, the upper cover plate 13, the crossbeam 14, and the water nozzle through an all-aluminum integrated brazing process, the strength of the liquid cooling plate 1 is further enhanced due to the serpentine wide flow channel 111 on the surface of the flow channel plate 11 and the shape of the turbulent heat sink 12. This also increases the maximum efficiency of the liquid cooling medium and maximizes the removal of heat generated by the battery module 3, thereby improving the heat exchange efficiency.

[0040] To facilitate uniform heat distribution, the support beam 2 is made of aluminum alloy. The side surface of the support beam 2 has microchannels 21 distributed in a rectangular array. Aluminum alloy has good mechanical strength and can withstand certain pressure and vibration, thus facilitating the overall support of the liquid cooling plate 1 and the battery module 3. The microchannels 21 make the interior of the support beam 2 hollow, which can reduce the amount of material used and further reduce weight and volume. The microchannel structure can also significantly increase the contact area between the liquid cooling medium and the support beam 2, thereby improving heat exchange efficiency. At the same time, it helps to distribute heat evenly inside the support beam 2 and reduce 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 contact with the upper surface of the upper cover plate 13, which facilitates the immersion of the liquid cooling medium in the surface of the battery module 3 and prevents the liquid cooling medium from flowing in. At the same time, the screw surface is coated with epoxy resin coating. Epoxy resin coating has excellent chemical resistance and heat resistance, and can resist the chemical properties of the liquid cooling medium to achieve 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 housing 4. The contacts of the temperature sensor 6 extend into the concave housing 4. A pressure relief valve 7 is fixedly installed on the other side of the upper surface of the concave housing 4. The temperature sensor 6 monitors the temperature inside the concave housing 4 and displays the detected data on the display, achieving the effect of real-time temperature monitoring. A specific opening pressure value is set for the pressure relief valve 7. When the pressure inside the concave housing 4 exceeds the safety limit, it automatically opens to release excess pressure, thereby protecting the concave housing 4 from damage due to overpressure. After the pressure decreases, it automatically closes to maintain normal operation.

[0043] To facilitate the immersion of the battery module 3, a concave shell 8 is provided on the outer surface of the support beam 2. The upper surface of the flow channel plate 11 has through holes 112 arranged in a rectangular array. The upper surface of the support beam 2 has a liquid inlet 22 that communicates with the through holes 112. The liquid inlet 22 communicates with the microchannel 21. The concave shell 8 holds the liquid cooling medium. The liquid cooling medium enters the microchannel 21 of the support beam 2 through the through holes 112 and the liquid inlet 22, or the liquid cooling medium falls directly into the concave shell 8, thereby achieving the heat dissipation effect of 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 to the liquid inlet 22 on the support beam 2. This facilitates the liquid cooling medium to increase the contact area between the liquid cooling medium and the support beam 2 through the microchannel 21, thereby improving the heat exchange efficiency. At the same time, it helps the heat to be evenly distributed inside the support beam 2, reducing local overheating and achieving the heat dissipation effect.

[0045] Working principle: When in use, the liquid cooling plate 1, which is made of flow channel plate 11, turbulence heat sink 12, upper cover plate 13, crossbeam 14 and water nozzle brazed together, is welded to the support beam 2 and then placed into the concave shell 8. At the same time, the concave cover 4 and the upper cover plate 13 are installed together with screws, so that the sealing strip 5 seals the gap between the concave cover and the upper cover plate 13.

[0046] The liquid cooling medium enters the serpentine wide channel 111 on the flow channel plate 11 through the water inlet 15, filling the serpentine wide channel 111 with liquid cooling medium. The liquid cooling medium then enters the microchannel 21 of the support beam 2 through the perforation 112 and the liquid inlet 22, and enters the concave shell 8 along the microchannel 21, immersing the liquid cooling medium. At the same time, the liquid cooling medium flows evenly in the turbulent heat sink 12, forming a turbulent vortex structure, which increases the contact area and enables it to remove the heat generated by the battery module 3 in the concave shell 4 with the highest efficiency and maximum extent. Meanwhile, the liquid cooling medium flows out through the water outlet 16, thereby achieving the effect of recycling.

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

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A liquid cooling plate for immersion-type high-efficiency battery heat dissipation, characterized in that: The liquid cooling plate (1) consists of a flow channel plate (11), a turbulence heat sink (12), an upper cover plate (13), a crossbeam (14), and two water nozzles from bottom to top. The two water nozzles are an inlet nozzle (15) and an outlet nozzle (16). Five support beams (2) are installed in a rectangular array at the bottom of the flow channel plate (11). Four battery modules (3) are arranged in a rectangular array on the upper surface of the upper cover plate (13). The two crossbeams (14) are symmetrically distributed on both sides of the upper surface of the upper cover plate (13). The four battery modules (3) are arranged between the two crossbeams (14). The upper surface of the flow channel plate (11) is provided with a serpentine wide flow channel (111), which is connected to the two water nozzles respectively; The turbulence heat sink (12) is disposed 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 turbulence heat sink (12), and the flow channel plate (11) is located on the lower surface of the turbulence heat sink (12). The longitudinal section of the turbulence heat sink (12) is set as square corrugated. The surface of the turbulence heat sink (12) is configured with a staggered tooth structure; The support beam (2) is made of aluminum alloy, and the side surface of the support beam (2) is provided with microchannels (21) arranged in a rectangular array. 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 perforations (112) arranged in a rectangular array, the upper surface of the support beam (2) is provided with a liquid inlet (22) communicating with the perforations (112), and the liquid inlet (22) is communicating with the microchannel (21).

2. The immersion-type high-efficiency battery heat dissipation liquid cooling plate according to claim 1, characterized in that: The turbulence heat sink (12) is made of aluminum alloy, and both the upper and lower surfaces of the turbulence heat sink (12) are set as planes.

3. The immersion-type high-efficiency battery heat dissipation liquid cooling plate according to claim 1, characterized in that: 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 plate (4). The lower surface of the sealing strip (5) is in contact with the upper surface of the upper cover plate (13).

4. The immersion-type high-efficiency battery heat dissipation liquid cooling plate according to claim 3, characterized in that: A temperature sensor (6) with a display is fixedly installed on one side of the upper surface of the concave cover (4), and the contact 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).

Images