A honeycomb sandwich liquid cooling plate structure

Abstract

The application discloses a honeycomb sandwich type liquid cooling plate structure, which comprises an inner layer plate, a cooling plate, an outer layer plate and a support; the inner layer plate is provided with oppositely arranged first and second side walls, the first side wall is used for contacting a battery module, and the second side wall is connected with the cooling plate; the cooling plate is arranged between the outer layer plate and the inner layer plate; the support comprises a first support unit and a second support unit, the first support unit is connected with and supports the inner layer plate and the cooling plate, and the second support unit is connected with and supports the outer layer plate and the cooling plate; a plurality of honeycomb holes are formed in the middle of the outer layer plate. The honeycomb sandwich structure design is adopted, the high specific strength and high specific stiffness characteristics of the honeycomb structure are utilized, the load-carrying capacity and deformation resistance of the liquid cooling plate are greatly improved while realizing light weight, the vibration resistance and fatigue resistance of the structure are improved, the structure has high integration degree, independent parts are reduced, the assembly process is simplified, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling equipment, and particularly relates to a honeycomb sandwich liquid cooling plate structure. Background Art

[0002] With the rapid development of new energy technologies, energy storage battery systems are widely used in fields such as electric vehicles, energy storage power stations, and renewable energy grid connection. The liquid cooling plates supporting energy storage batteries need to withstand long-term battery stacking pressure, mechanical vibration, and impact loads under complex working conditions. Insufficient structural strength of the liquid cooling plate will directly affect the overall safety and service life of the energy storage system.

[0003] Currently, traditional liquid cooling plates on the market mostly adopt single-layer metal plates or simple support frame structures, which have many defects: firstly, the structural stiffness is insufficient. A single sandwich structure is difficult to bear the self-weight of the battery module and is prone to deformation under pressure, resulting in a decrease in the series connection and installation stability of the battery module; secondly, the anti-impact performance is poor. Under vibration and impact conditions, the liquid cooling plate is prone to fatigue damage, which in turn leads to the failure of the thermal management system and shortens the service life of the equipment; thirdly, there is a contradiction between weight and strength. In the industry, the structural strength is often improved by thickening the plate or adding stiffening ribs, but this will greatly increase the self-weight of the liquid cooling plate, violating the development requirement of lightweight battery systems; fourthly, the assembly complexity is high. Traditional multi-layer support structures require additional welding or bolts for fixation, increasing the manufacturing cost and process difficulty.

[0004] Therefore, at the present stage, it is urgent to develop a liquid cooling plate structure with high bearing capacity, high heat dissipation efficiency and meeting the lightweight requirements to adapt to the high-performance use requirements of energy storage batteries. Summary of the Invention

[0005] The present invention provides a honeycomb sandwich liquid cooling plate structure with strong bearing capacity, excellent anti-fatigue performance, light overall weight, and at the same time can simplify the assembly process and reduce the production cost.

[0006] The technical solution adopted by the present invention is: a honeycomb sandwich liquid cooling plate structure, including an inner layer plate, a cooling plate, an outer layer plate and a support member; the inner layer plate has a first side wall and a second side wall arranged oppositely, the first side wall is used to contact the battery module, and the second side wall is connected to the cooling plate; the cooling plate is arranged between the outer layer plate and the inner layer plate; the support member includes a first support unit and a second support unit, the first support unit connects and supports the inner layer plate and the cooling plate, and the second support unit connects and supports the outer layer plate and the cooling plate; a plurality of honeycomb holes are opened in the middle of the outer layer plate.

[0007] Further, a limiting member is provided on the first side wall of the inner layer plate, and the limiting member is used to limit and prevent the sliding of the battery module.

[0008] Furthermore, the limiting component includes two parallel and spaced limiting rods, the distance between the two limiting rods being adapted to the length of the battery module.

[0009] Furthermore, the cooling plate has a guide tube on the surface facing the inner layer plate. The guide tube is arranged in a closed loop and is bent. The guide tube is filled with coolant and is in contact with the second side wall of the inner layer plate.

[0010] Furthermore, a protective frame is fixedly provided on the surface of the cooling plate facing the inner layer plate. The protective frame is connected to the second side wall of the inner layer plate and is used to prevent the guide tube from being squeezed by the second side wall.

[0011] Furthermore, the first support unit includes an abutment rod, which is fixedly connected to the end of the protective frame. The abutment rod connects the second side wall and the cooling plate, and the thickness of the abutment rod is consistent with the thickness of the protective frame.

[0012] Furthermore, the second support unit includes two reinforcing rods, which are disposed on the surface of the outer layer plate facing the cooling plate and are connected to the cooling plate.

[0013] Furthermore, the two reinforcing rods are arranged in parallel, with each reinforcing rod positioned at one end of the cooling plate. The honeycomb holes are arranged in the area between the two reinforcing rods, and the honeycomb holes have a regular hexagonal structure.

[0014] Furthermore, a cooling pipe is provided on the surface of the cooling plate facing the inner plate, and the cooling pipe has an inlet and an outlet. A circulation pump is installed on the outer plate, and the outlet and inlet of the circulation pump are respectively connected to the inlet and outlet of the cooling pipe to realize the circulation of coolant.

[0015] Furthermore, the honeycomb holes penetrate the outer layer plate, and there is a gap between two adjacent honeycomb holes.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. Balancing high strength and lightweight: This invention features honeycomb holes on the outer layer plate. Utilizing the high specific stiffness and high specific strength of the honeycomb structure, it significantly improves the overall bending stiffness and compressive strength of the structure while reducing the amount of material used and the overall weight of the liquid cooling plate. This allows the structure to stably withstand long-term static and dynamic loads from the battery module, thus helping to increase the energy density of the battery system.

[0017] 2. Strong structural integrity and excellent fatigue resistance: The present invention forms a multi-directional positioning and constraint system through the abutment rod, protective frame and reinforcing rod, which laterally limits the flow channel structure and transmits force longitudinally, avoiding the stress concentration problem caused by traditional welding and bolt connection, effectively improving the integrity of the liquid cooling plate under vibration and impact conditions, the components are not easy to loosen or shift, and the service life of the present invention is extended.

[0018] 3. High integration and convenient assembly: The present invention sets a limiting rod in the inner layer plate, eliminating the need for additional limiting blocks, brackets and other parts, reducing the number of parts and assembly steps; the overall structure can be assembled by embedding and snap-fit ​​with a small amount of welding, simplifying the production process and reducing manufacturing costs.

[0019] 4. Stable heat dissipation performance: The bent arrangement of the guide tubes or cooling tubes increases the heat exchange area, and the honeycomb holes of the outer plate ensure that the cooling plate is in full contact with the outside air, ensuring the heat exchange efficiency of the coolant; the protective frame can prevent the guide tubes from being squeezed and damaged, ensuring the long-term stable operation of the thermal management system.

[0020] 5. Good industrial adaptability: The honeycomb structure, sheet material processing, and pipeline assembly processes adopted in this invention are all mature industry processes, requiring no special high-end equipment. The processes are highly adaptable and can meet the needs of large-scale mass production, and have broad application prospects in the fields of energy storage power stations and new energy vehicle battery systems. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0022] Figure 2 This is a schematic diagram of the cooling plate in Embodiment 1 of the present invention.

[0023] Figure 3 This is a side view of the cooling plate and outer layer plate of Embodiment 1 of the present invention.

[0024] Figure 4 This is a schematic diagram of the outer layer plate of Embodiment 1 of the present invention. Detailed Implementation

[0025] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] like Figures 1-4 As shown, this embodiment provides a honeycomb sandwich liquid cooling plate structure, including an inner plate 2, a cooling plate 4, an outer plate 1, and a support member.

[0028] The inner layer plate 2 is a rectangular solid plate with a first sidewall and a second sidewall arranged opposite to each other. The first sidewall directly contacts the battery module, and the second sidewall is connected to the cooling plate 4. The cooling plate 4 is located between the outer layer plate 1 and the inner layer plate 2. The outer layer plate 1 can both assist the cooling plate 4 in heat dissipation and enhance the overall load-bearing capacity.

[0029] A limiting component is provided on the first side wall of the inner layer plate 2. The limiting component consists of two parallel and spaced limiting rods 3. The distance between the two limiting rods 3 is consistent with the length of the battery module. The battery module is placed between the two limiting rods 3, which can achieve lateral limiting, prevent the battery module from sliding or shaking, and ensure installation stability.

[0030] A coolant guide tube 6 is installed on the surface of the cooling plate 4 facing the second sidewall of the inner layer plate 2. The coolant guide tube 6 is a closed ring arranged in a bent shape. The coolant guide tube 6 is filled with coolant and is in close contact with the second sidewall of the inner layer plate 2. The coolant exchanges heat with the inner layer plate 2 through the coolant guide tube 6 to cool the battery module. The bent arrangement of the coolant guide tube 6 effectively increases the heat exchange contact area and improves heat dissipation efficiency.

[0031] A U-shaped protective frame 5 is also fixedly installed on the cooling plate 4. The protective frame 5 is fixedly connected to the second side wall of the inner plate 2. The protective frame 5 is set on the outside of the guide tube 6, which can buffer the squeezing force brought by the pressure of the battery module and prevent the guide tube 6 from being damaged by pressure.

[0032] The support structure is divided into a first support unit and a second support unit. The first support unit connects and supports the inner layer plate 2 and the cooling plate 4, while the second support unit connects and supports the outer layer plate 1 and the cooling plate 4. These three components form an integrated sandwich structure under the support structure. The first support unit is an abutment rod 7, which is fixed to the end of the protective frame 5. The abutment rod 7 connects the second sidewall of the inner layer plate 2 and the cooling plate 4. The thickness of the abutment rod 7 is the same as the thickness of the protective frame 5. The abutment rod 7 and the protective frame 5 work together to connect and support the inner layer plate 2 and the cooling plate 4. The second support unit consists of two reinforcing rods 8, which are arranged parallel to each other on the surface of the outer layer plate 1 facing the cooling plate 4. The two reinforcing rods 8 are respectively located at both ends of the cooling plate 4 and are fixedly connected to the cooling plate 4, effectively improving the bending resistance and overall support performance of the outer layer plate 1.

[0033] Multiple honeycomb holes 10 are opened in the middle area of ​​the outer layer plate 1. The honeycomb holes 10 are through holes and are set as regular hexagons. There is a gap between adjacent honeycomb holes 10. The honeycomb holes 10 are distributed between two reinforcing rods 8. This structure reduces weight while ensuring the structural strength of the outer layer plate 1, and also allows the cooling plate 4 to be in direct contact with the outside air, ensuring the heat dissipation effect.

[0034] Example 2

[0035] This embodiment is basically the same as the structure of embodiment 1, except that: the guide pipe 6 is replaced with a cooling pipe, and the cooling pipe is provided with independent inlet and outlet; a circulation pump is added to the outer plate 1, and the outlet and inlet of the circulation pump are connected to the inlet and outlet of the cooling pipe through pipelines to realize the circulation of coolant, continuously ensure the heat exchange and cooling effect, and is suitable for high-power, long-term operation energy storage battery scenarios.

Claims

1. A honeycomb sandwich liquid-cooled plate structure, characterized in that, The device includes an inner layer plate, a cooling plate, an outer layer plate, and a support member. The inner layer plate has a first sidewall and a second sidewall that are disposed opposite to each other. The first sidewall is used to contact the battery module, and the second sidewall is connected to the cooling plate. The cooling plate is disposed between the outer layer plate and the inner layer plate. The support member includes a first support unit and a second support unit. The first support unit connects and supports the inner layer plate and the cooling plate, and the second support unit connects and supports the outer layer plate and the cooling plate. The outer layer plate has multiple honeycomb holes in its middle section.

2. The honeycomb sandwich liquid cooling plate structure according to claim 1, wherein a limiting member is provided on the first side wall of the inner layer plate, the limiting member being used to limit and prevent the battery module from sliding.

3. The honeycomb sandwich liquid cooling plate structure according to claim 2, wherein the limiting member includes two parallel and spaced limiting rods, and the distance between the two limiting rods is adapted to the length of the battery module.

4. The honeycomb sandwich liquid-cooled plate structure according to claim 1, wherein the cooling plate is provided with a guide pipe on the surface facing the inner layer plate, the guide pipe is arranged in a closed ring and bent, the guide pipe is filled with coolant, and the guide pipe is in contact with the second side wall of the inner layer plate.

5. In the honeycomb sandwich liquid cooling plate structure according to claim 4, a protective frame is fixedly provided on the surface of the cooling plate facing the inner layer plate, the protective frame is connected to the second side wall of the inner layer plate, and the protective frame is used to prevent the guide tube from being squeezed by the second side wall.

6. The honeycomb sandwich liquid cooling plate structure according to claim 5, wherein the first support unit includes an abutment rod, the abutment rod is fixedly connected to the end of the protective frame, the abutment rod connects the second side wall and the cooling plate, and the thickness of the abutment rod is consistent with the thickness of the protective frame.

7. The honeycomb sandwich liquid cooling plate structure according to claim 1, wherein the second support unit includes two reinforcing rods, the two reinforcing rods are disposed on the surface of the outer plate facing the cooling plate, and the reinforcing rods are connected to the cooling plate.

8. The honeycomb sandwich liquid cooling plate structure according to claim 7, wherein two reinforcing rods are arranged in parallel, and the two reinforcing rods are respectively arranged at both ends of the cooling plate, and the honeycomb holes are arranged in the area between the two reinforcing rods, and the honeycomb holes are regular hexagonal structures.

9. The honeycomb sandwich liquid-cooled plate structure according to claim 1, wherein a cooling pipe is provided on the surface of the cooling plate facing the inner layer plate, the cooling pipe is provided with an inlet and an outlet, a circulation pump is installed on the outer layer plate, and the outlet and inlet of the circulation pump are respectively connected to the inlet and outlet of the cooling pipe to realize the circulation of coolant.

10. The honeycomb sandwich liquid-cooled plate structure according to claim 1, wherein the honeycomb holes penetrate the outer layer plate, and a gap is left between two adjacent honeycomb holes.

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