Batwing-shaped battery thermal management liquid cooling plate structure and thermal management system thereof

Abstract

The application discloses a battery thermal management liquid cooling plate structure imitating bat bone wings and a thermal management system thereof and belongs to the technical field of battery thermal management. The battery thermal management liquid cooling plate structure imitating bat bone wings comprises a plate body, and a main flow channel, a secondary flow channel and a bionic flow channel are arranged in the plate body. The main flow channel is arranged at the central axis of the plate body, and the main flow channel and the secondary flow channel form a grid shape on the plate body. The bionic flow channel is an abstract geometric shape imitating bat bone wings, and the bionic flow channel is arranged at the side of the main flow channel or the secondary flow channel. The two ends of the main flow channel are respectively connected with main water inlets and outlets, and the two ends of the secondary flow channel perpendicular to the center of the main flow channel are respectively connected with secondary water inlets and outlets. A plurality of filling cavities are arranged in the plate body between the main flow channel, the secondary flow channel and the bionic flow channel, and the filling cavities are filled with phase change materials. The application reduces the fluid resistance in the flow channel by virtue of the natural drag reduction characteristics of the bionic structure, makes the cooling liquid flow more smoothly, and assists heat dissipation through the passive heat absorption characteristics of the phase change materials, so that a composite heat dissipation mechanism is formed with the liquid cooling flow channel, various extreme working conditions are adapted, and the heat dissipation effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery thermal management, and in particular relates to a battery thermal management liquid cooling plate structure imitating a bat bone wing and a thermal management system thereof. Background Art

[0002] With the rapid development of new energy technologies, power batteries, as core components in new energy vehicles, energy storage systems, and other fields, have a direct impact on their thermal management performance, safety, lifespan, and energy density. Existing battery thermal management systems primarily use single or combined cooling methods such as air cooling, liquid cooling, and phase change cooling. However, in practical applications, they still face the following technical bottlenecks:

[0003] 1. Insufficient heat dissipation uniformity and efficiency: Traditional liquid cooling plates mostly use in-line flow channels or simple grid structures, with a single coolant flow path, which can easily lead to significant longitudinal and lateral temperature gradients in the battery pack.

[0004] 2. Conflict between structural design and lightweighting: Although some bionic liquid cooling plates draw on biological morphology, they excessively pursue similar appearance, resulting in complex flow channels, excessive redundant materials, and a relatively large overall mass. This not only increases the vehicle's load and energy consumption, but may also affect heat dissipation stability due to high fluid resistance.

[0005] 3. Limited adaptability to extreme working conditions: Traditional phase change material cooling systems are highly passive and cannot dynamically coordinate with liquid cooling systems, making it difficult to cope with scenarios with drastic temperature fluctuations.

[0006] To this end, a battery thermal management liquid cooling plate structure imitating bat bone wings and its thermal management system are proposed. Summary of the Invention

[0007] In order to solve the above technical problems, the present invention proposes a battery thermal management liquid cooling plate structure imitating a bat bone wing and its thermal management system.

[0008] To achieve the above-mentioned objectives, the present invention provides a battery thermal management liquid cooling plate structure imitating a bat bone wing, comprising: a plate body, wherein a main flow channel, a secondary flow channel and a bionic flow channel are opened in the plate body; the main flow channel is opened at the central axis of the plate body, and the main flow channel and the secondary flow channel form a grid shape on the plate body, the bionic flow channel is an abstract geometric shape imitating a bat bone wing, and the bionic flow channel is opened on the side of the main flow channel or the secondary flow channel; the two ends of the main flow channel are respectively connected to the main inlet and outlet, and the two ends of the secondary flow channel perpendicular to the center of the main flow channel are respectively connected to the secondary inlet and outlet; a number of filling cavities are opened in the plate body between the main flow channel, the secondary flow channel and the bionic flow channel, and the filling cavities are filled with phase change material.

[0009] Preferably, the plate body includes a base plate and a cover plate, the cover plate is sealed and connected to the top of the base plate, and the main channel, the secondary channel, the bionic channel, the filling cavity, the main water inlet and outlet, and the secondary water inlet and outlet are all opened on the side of the base plate close to the cover plate.

[0010] Preferably, the base plate and the cover plate are fastened to each other through a mortise and tenon structure to form a plate body.

[0011] Preferably, the width of the main channel gradually narrows from both ends to the middle.

[0012] Preferably, the phase change material is phase change paraffin.

[0013] Preferably, the substrate and the cover plate are made of aluminum alloy material.

[0014] Preferably, the widest part of the main channel is equal to the width of the main water inlet and outlet; the width of the secondary channel is equal to the width of the bionic channel; the width of the secondary water inlet and outlet is smaller than the widest part of the main channel or the width of the main water inlet and outlet, and larger than the width of the secondary channel or the bionic channel.

[0015] Preferably, the thickness of the main flow channel, the secondary flow channel and the bionic flow channel is 1 / 2 of the thickness of the plate body.

[0016] A thermal management system, using the above-mentioned bat-wing-like battery thermal management liquid cooling plate structure, comprises:

[0017] A first water tank, wherein the first water tank is connected to a main water inlet pipe and a main water return pipe, wherein the main water inlet pipe and the main water return pipe are respectively connected to the two main water inlets and outlets of the battery thermal management liquid cooling plate structure imitating the bat bone wing;

[0018] The second water tank is connected to an auxiliary water inlet pipe and an auxiliary water return pipe, and the auxiliary water inlet pipe and the auxiliary water return pipe are respectively connected to the two auxiliary water inlets and outlets of the battery thermal management liquid cooling plate structure of the bat bone wing imitation; a first regulating valve is provided on the auxiliary water inlet pipe, and a second regulating valve and a third regulating valve are respectively provided at both ends of the auxiliary water return pipe.

[0019] Preferably, it also includes a heating water tank, which is connected to the main water inlet pipeline through an inlet branch pipe; the heating water tank is connected to the main return pipeline through a return branch pipe; a fourth regulating valve is provided on the inlet branch pipe, and a fifth regulating valve is provided on the return branch pipe.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] The bionic flow channels in the plate body imitate the abstract geometric shape of bat wings. The main channel or secondary flow channel is distributed in the grid-shaped lattice formed by the main channel and the secondary flow channel as the bionic bat body. The natural drag reduction characteristics of the bionic structure can be used to reduce the fluid resistance in the flow channel, making the coolant flow smoother. At the same time, the layout of multiple groups of bionic flow channels in the grid can allow the coolant to be evenly distributed to various areas of the battery pack, thereby improving the uniformity of heat dissipation. The design of the main inlet and outlet connected at both ends of the main channel and the secondary inlet and outlet connected at both ends of the secondary flow channel can realize multi-directional flow and flexible entry and exit of the coolant. Combined with the shape of the bionic flow channel, the fluid path is optimized and the heat exchange efficiency is enhanced. A filling cavity filled with phase change material is set between the main channel, the secondary flow channel and the bionic flow channel, which can assist in heat dissipation through the passive heat absorption characteristics of the phase change material without additional energy consumption. When the battery heats up, it absorbs heat through the phase change process, reduces the temperature difference, further improves the temperature uniformity, and forms a composite heat dissipation mechanism with the liquid cooling channel to improve the overall heat dissipation effect.

[0022] A thermal management system using a bat-wing-like liquid cold plate structure achieves efficient heat dissipation and energy saving in all scenarios through the dual-circuit structure of the first and second water tanks and intelligent regulating valve control: at normal room temperature, only the first water tank supplies liquid and relies on phase change materials for assistance, which is energy-saving and low-consumption; at high temperatures, the two water tanks work together to increase the flow rate and enhance heat dissipation; at low temperatures, the heating water tank and the first water tank mix the flow channel to increase the temperature to avoid performance degradation; when the temperature is unbalanced, the valve dynamically adjusts the flow rate to achieve "heating-cooling" two-way precise control, with full temperature range adaptability. Combined with the low resistance of the bionic flow channel and the buffering characteristics of the phase change material, it significantly improves heat dissipation uniformity, system reliability, and stability and safety in extreme environments, and optimizes energy consumption and temperature control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the flow channel structure in the bat-bone wing-mimicking battery thermal management liquid cooling plate structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the battery thermal management liquid cooling plate imitating bat bone wings of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure assembly state of the battery thermal management liquid cooling plate imitating bat bone wings of the present invention;

[0027] Figure 4 This is a schematic diagram of the thermal management system structure of the present invention;

[0028] Figure 5A graph showing the battery temperature changing over time using a battery thermal management liquid cooling plate structure imitating a bat bone wing in a simulation experiment of the present invention;

[0029] Figure 6 A graph showing the battery temperature changing over time using a battery thermal management liquid cooling plate structure with a common flow channel in a simulation experiment of the present invention;

[0030] Figure 7 This is a temperature simulation cloud diagram of a battery module using a bat-wing-like battery thermal management liquid cooling plate structure in a simulation experiment of the present invention;

[0031] Figure 8 This is a temperature simulation cloud diagram of a battery module using a battery thermal management liquid cooling plate structure with a common flow channel in the simulation experiment of the present invention.

[0032] In the figure: 1. Main channel; 2. Secondary channel; 3. Bionic channel; 4. Main water inlet and outlet; 5. Secondary water inlet and outlet; 6. Filling chamber; 7. Base plate; 8. Cover plate; 9. First water tank; 10. Main water inlet pipe; 11. Main return water pipe; 12. Second water tank; 13. Secondary water inlet pipe; 14. Secondary return water pipe; 15. First regulating valve; 16. Second regulating valve; 17. Third regulating valve; 18. Heating water tank; 19. Water inlet branch pipe; 20. Water return branch pipe; 21. Fourth regulating valve; 22. Fifth regulating valve. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figures 1 to 3 As shown, this embodiment provides a battery thermal management liquid cooling plate structure that imitates a bat bone wing, including: a plate body, with a main channel 1, a secondary channel 2 and a bionic channel 3; the main channel 1 is opened at the central axis of the plate body, and the main channel 1 and the secondary channel 2 form a grid shape on the plate body, the bionic channel 3 is an abstract geometric shape that imitates a bat bone wing, and the bionic channel 3 is opened on the side of the main channel 1 or the secondary channel 2; the two ends of the main channel 1 are respectively connected to the main water inlet and outlet 4, and the two ends of the secondary channel 2 perpendicular to the center of the main channel 1 are respectively connected to the secondary water inlet and outlet 5; a number of filling cavities 6 are opened in the plate body between the main channel 1, the secondary channel 2 and the bionic channel 3, and the filling cavity 6 is filled with phase change material.

[0036] The bionic flow channel 3 in the plate body imitates the abstract geometric shape of a bat's wing. The main channel 1 or the secondary flow channel 2 is distributed in the grid-shaped lattice formed by the main channel 1 and the secondary flow channel 2 as a bionic bat body. The natural drag reduction characteristics of the bionic structure can be used to reduce the fluid resistance in the flow channel, making the coolant flow smoother. At the same time, the layout of multiple groups of bionic flow channels 3 in the grid can allow the coolant to be evenly distributed to various areas of the battery pack, thereby improving the uniformity of heat dissipation. The design of the main channel 1 connecting to the main inlet and outlet 4 at both ends and the secondary flow channel 2 connecting to the secondary inlet and outlet 5 at both ends can realize multi-directional flow and flexible entry and exit of the coolant. Combined with the shape of the bionic flow channel 3, the fluid path is optimized and the heat exchange efficiency is enhanced. A filling cavity 6 filled with phase change material is set between the main channel 1, the secondary flow channel 2 and the bionic flow channel 3. The passive heat absorption characteristics of the phase change material can assist in heat dissipation without additional energy consumption. When the battery heats up, heat is absorbed through the phase change process, reducing the temperature difference, further improving the temperature uniformity, and forming a composite heat dissipation mechanism with the liquid cooling channel to improve the overall heat dissipation effect.

[0037] A further optimized solution is that the plate body includes a base plate 7 and a cover plate 8, the cover plate 8 is sealed and connected to the top of the base plate 7, and the main channel 1, the secondary channel 2, the bionic channel 3, the filling cavity 6, the main water inlet and outlet 4 and the secondary water inlet and outlet 5 are all opened on the side of the base plate 7 close to the cover plate 8.

[0038] The split design of the base plate 7 and the cover plate 8 facilitates the processing and forming of structures such as the flow channel and the filling cavity 6, such as stamping, thereby reducing the manufacturing difficulty and cost; the sealed connection of the cover plate 8 can ensure the sealing of the liquid cooling system and prevent the leakage of the coolant, while forming a closed fluid channel to ensure the stability of the heat dissipation process; this structure is easy to disassemble and maintain. When the flow channel needs to be inspected or cleaned, it is only necessary to separate the cover plate 8 to directly access the internal structure, thereby improving the convenience and maintainability in actual application.

[0039] According to a further optimized solution, the base plate 7 and the cover plate 8 are fastened to each other through a mortise and tenon structure to form a plate body.

[0040] The mortise and tenon structure can achieve tight fixation of the base plate 7 and the cover plate 8, ensuring the firmness and sealing of the overall structure of the liquid cooling plate, effectively preventing leakage of the coolant, and at the same time, it can be easily disassembled without additional fasteners, making it convenient to inspect, clean or replace the phase change material of the internal flow channel, filling cavity 6 and other structures, taking into account the stability of system operation and the convenience of maintenance, and improving the practicality and reliability of the liquid cooling plate in actual applications.

[0041] Furthermore, a sealing ring is embedded at the edge where the cover plate 8 abuts the base plate 7, thereby further enhancing the sealing performance of the connection between the cover plate 8 and the base plate 7.

[0042] According to the further optimization scheme, the width of the main channel 1 gradually narrows from both ends to the middle.

[0043] The variable width design of the main channel 1 optimizes the fluid dynamic characteristics, so that the coolant forms a gradient flow rate in the main channel 1 - the wider areas at both ends facilitate the rapid inflow and convergence of the coolant, and the narrow area in the middle can accelerate the fluid velocity and enhance the turbulence effect, thereby improving the heat exchange efficiency between the coolant and the battery, while reducing fluid retention and pressure loss inside the flow channel. On the basis of the drag reduction of the bionic structure, the heat dissipation performance is further optimized, the heat distribution is made more uniform, and the problem of local overheating is avoided, taking into account both the heat dissipation efficiency and the stability of the fluid flow.

[0044] Further optimizing the solution, the phase change material is phase change paraffin.

[0045] Phase change paraffin has the characteristic of a high degree of matching between its phase change temperature (29°C) and the optimal operating temperature of the battery (25-30°C). It can passively absorb or release heat through the solid-liquid phase change process when the battery temperature fluctuates. It can assist the liquid cooling system in regulating the temperature without additional energy consumption, thereby improving heat dissipation stability and temperature uniformity.

[0046] According to a further optimized solution, the base plate 7 and the cover plate 8 are made of aluminum alloy.

[0047] Aluminum alloy, with its excellent thermal conductivity, can quickly transfer battery heat to the coolant in the flow channel, significantly improving heat exchange efficiency. At the same time, its lightweight characteristics effectively reduce the overall weight of the liquid cooling plate, avoiding the load burden of traditional metal materials. Aluminum alloy is easy to stamp and form, which facilitates the processing and manufacturing of the flow channel and filling cavity 6, taking into account heat dissipation performance, lightweight structure and process feasibility.

[0048] Further optimization scheme: the widest part of the main channel 1 is equal to the width of the main water inlet and outlet 4; the width of the secondary channel 2 and the bionic channel 3 is equal; the width of the secondary water inlet and outlet 5 is smaller than the widest part of the main channel 1 or the width of the main water inlet and outlet 4, and larger than the width of the secondary channel 2 or the bionic channel 3.

[0049] Specifically, in this embodiment, the widest part of the main channel 1 and the main water inlet and outlet 4 are both 16 mm wide, and the narrowest part of the center of the main channel 1 is 12 mm; the width of the secondary channel 2 and the bionic channel 3 is 4 mm; the width of the secondary water inlet and outlet 5 is 6 mm; the overall width of the main channel 1, the secondary channel 2 and the bionic channel 3 is 218 mm, and the length is 230 mm.

[0050] According to the further optimized solution, the thickness of the main channel 1, the secondary channel 2 and the bionic channel 3 is 1 / 2 of the thickness of the plate.

[0051] Specifically, in this embodiment, the thickness of the main flow channel 1 , the secondary flow channel 2 and the bionic flow channel 3 are all 8 mm, and the thickness of the plate body is 16 mm.

[0052] Reference Figure 4As shown, this embodiment also provides a thermal management system, which uses the bat-bone wing-like battery thermal management liquid cooling plate structure, including:

[0053] A first water tank 9 is connected to a main water inlet pipe 10 and a main water return pipe 11, and the main water inlet pipe 10 and the main water return pipe 11 are respectively connected to the two main water inlets and outlets 4 of the battery thermal management liquid cooling plate structure imitating the bat bone wing;

[0054] The second water tank 12 is connected to an auxiliary water inlet pipe 13 and an auxiliary water return pipe 14. The auxiliary water inlet pipe 13 and the auxiliary water return pipe 14 are respectively connected to the two auxiliary water inlets and outlets 5 of the battery thermal management liquid cooling plate structure imitating bat bone wings; a first regulating valve 15 is provided on the auxiliary water inlet pipe 13, and a second regulating valve 16 and a third regulating valve 17 are respectively provided at both ends of the auxiliary return pipe 14.

[0055] A further optimization solution also includes a heating water tank 18, which is connected to the main water inlet pipe 10 through an inlet branch pipe 19; the heating water tank 18 is connected to the main return water pipe 11 through a return branch pipe 20; a fourth regulating valve 21 is provided on the inlet branch pipe 19, and a fifth regulating valve 22 is provided on the return branch pipe 20.

[0056] The thermal management system operates as follows:

[0057] Under normal room temperature, the first regulating valve 15, the second regulating valve 16, the third regulating valve 17, the fourth regulating valve 21 and the fifth regulating valve 22 are all closed, and the coolant in the first water tank 9 slowly enters the battery liquid cooling plate for primary cooling of the battery, while the phase change material provides auxiliary cooling;

[0058] When the ambient temperature is too high or the battery operating power is too high, resulting in heat accumulation and excessive battery temperature, the temperature regulation capacity of the phase change material and the first water tank 9 is exceeded. At this time, the first regulating valve 15, the second regulating valve 16, and the third regulating valve 17 are opened, and the fourth regulating valve 21 and the fifth regulating valve 22 remain closed. The coolant in the second water tank 12 and the coolant in the first water tank 9 will enter the liquid cold plate at the same time, accelerating the flow of the coolant;

[0059] When the ambient temperature is too low, open the fourth regulating valve 21 and the fifth regulating valve 22 to allow the heated coolant in the heating water tank 18 to merge with the coolant in the first water tank 9 and then flow into the battery liquid cooling plate to ensure the appropriate coolant temperature;

[0060] When the ambient temperature fluctuates or the battery itself releases heat, causing the coolant temperature to be unable to maintain equilibrium, the openings of the first regulating valve 15 , the second regulating valve 16 , and the third regulating valve 17 are adjusted to assist cooling.

[0061] Through the dual-circuit structural design of the first water tank 9 and the second water tank 12, combined with the intelligent control strategy of their respective regulating valves, efficient heat dissipation and energy saving are achieved in all scenarios: at normal room temperature, only the first water tank 9 supplies liquid slowly and relies on phase change materials to assist in heat dissipation, without the need for additional energy consumption; under high temperature or high power conditions, the second water tank 12 is automatically opened to supply water, and the two water tanks work together to supply liquid to increase the coolant flow rate and enhance heat exchange, ensuring that the battery temperature quickly drops to a safe range. This mechanism not only reduces the energy consumption of conventional operation through scene-based regulation, but also can respond quickly under extreme conditions. Combined with the low-resistance characteristics of the bionic flow channel 3 and the temperature buffering effect of the phase change material, it significantly improves the heat dissipation uniformity and system reliability, and achieves the dual optimization of "energy-saving operation" and "efficient heat dissipation".

[0062] When the ambient temperature is too low, the mixing channel between the heating water tank and the first water tank is opened, and the heated coolant is used to raise the battery operating temperature, avoiding performance degradation caused by low temperatures. When the ambient temperature fluctuates or the battery's own heat release causes temperature imbalance, the coolant flow is dynamically adjusted by combining the openings of the first regulating valve 15, the second regulating valve 16, and the third regulating valve 17 to achieve precise two-way "heating-cooling" control. This design enables the system to go beyond a single heat dissipation function and possess full temperature range adaptability. It can quickly cool down at high temperatures and actively heat up at low temperatures. It can also achieve dynamic balance through multi-valve coordination during temperature fluctuations, significantly improving the stability and safety of the battery in extreme environments. At the same time, it avoids the either-or extensive adjustment mode of traditional systems, achieving a dual improvement in energy consumption optimization and temperature control accuracy.

[0063] Verification experiment and verification conclusion:

[0064] In order to verify the heat dissipation effect of the battery thermal management liquid cooling plate structure imitating bat bone wings in the present invention, simulation experiments were carried out on the battery thermal management liquid cooling plate structure with ordinary flow channels (composed of multiple parallel straight flow channels) and the battery thermal management liquid cooling plate structure imitating bat bone wings in the present invention, and the simulation experimental results were obtained. Figures 5 to 8 As shown:

[0065] For a battery thermal management liquid cold plate structure with a conventional flow channel, the battery pack's temperature distribution is uneven, with a maximum temperature difference of 10°C across all module components. The battery temperature exhibits significant temperature gradients in the longitudinal, transverse, and vertical directions. The battery's temperature distribution is uneven from top to bottom. Viewed from the plane of the battery's positive and negative poles, the battery temperature exhibits a focusing effect in the center of the cell. This is due to the lower coolant temperature at the inlet, with a temperature distribution of 22°C to 26.5°C and a temperature difference of 4.5°C. From the positive and negative poles to the base, the battery exhibits a significant temperature gradient, with a temperature distribution range of 22°C to 29°C and a temperature difference of approximately 7°C. This is due to an irrational flow channel setup, which prevents the battery from dissipating sufficient heat. Viewed from the front, the battery's temperature is lower near the positive and negative poles and higher at the bottom, due to their proximity to the coolant inlet.

[0066] The bat-wing-like battery thermal management liquid cooling plate structure described in this invention achieves relatively uniform temperature distribution in the battery pack, with a maximum temperature difference of 4°C across all module components. Battery temperatures are evenly distributed from top to bottom, maintaining a temperature range of 23-24°C. No significant temperature gradients are observed in the vertical, horizontal, or vertical directions.

[0067] In general, the heat dissipation effect and heat dissipation uniformity of the battery thermal management liquid cooling plate structure imitating bat bone wings described in the present invention are higher than those of the battery thermal management liquid cooling plate structure with ordinary flow channels. At the same time, through the coordinated control of multi-circuit regulating valves, the adjustability of heat dissipation is also higher than that of the battery thermal management liquid cooling plate structure with ordinary flow channels. The performance is effectively improved by using bionic bat bone wing flow channels.

[0068] Any details not provided in the present invention are conventional technical means known to those skilled in the art.

[0069] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 a limitation on the present invention.

[0070] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A battery thermal management liquid cooling plate structure imitating a bat bone wing, characterized in that: The invention comprises: a plate body, wherein a main flow channel (1), a secondary flow channel (2) and a bionic flow channel (3) are provided in the plate body; the main flow channel (1) is provided at the central axis of the plate body, the main flow channel (1) and the secondary flow channel (2) form a grid shape on the plate body, the bionic flow channel (3) is an abstract geometric shape imitating a bat's wing, and the bionic flow channel (3) is provided on the side of the main flow channel (1) and the secondary flow channel (2); the main flow channel (1) is connected to a main water inlet and outlet (4) at both ends, the main water inlet and outlet (4) are arranged at opposite ends of the plate body, and the secondary flow channel (2) is connected to a secondary water inlet and outlet (5) at both ends perpendicular to the center of the main flow channel (1); a plurality of filling cavities (6) are provided in the plate body between the main flow channel (1), the secondary flow channel (2) and the bionic flow channel (3), and the filling cavities (6) are filled with a phase change material; The width of the main channel (1) gradually narrows from both ends to the middle; The widest part of the main channel (1) is equal to the width of the main water inlet and outlet (4); the width of the secondary channel (2) and the bionic channel (3) is equal; the width of the secondary water inlet and outlet (5) is smaller than the widest part of the main channel (1) or the width of the main water inlet and outlet (4), and larger than the width of the secondary channel (2) or the bionic channel (3); The thickness of the main flow channel (1), the secondary flow channel (2) and the bionic flow channel (3) is 1 / 2 of the thickness of the plate; The two main water inlets and outlets (4) are connected to a first water tank (9) via a main water inlet pipe (10) and a main water return pipe (11); The two auxiliary water inlets and outlets (5) are connected to a second water tank (12) via an auxiliary water inlet pipeline (13) and an auxiliary water return pipeline (14); a first regulating valve (15) is provided on the auxiliary water inlet pipeline (13), and a second regulating valve (16) and a third regulating valve (17) are respectively provided at both ends of the auxiliary water return pipeline (14).

2. The bat-wing-like battery thermal management liquid cooling plate structure according to claim 1 is characterized in that: The plate body comprises a base plate (7) and a cover plate (8), wherein the cover plate (8) is sealed and connected to the top of the base plate (7), and the main flow channel (1), the secondary flow channel (2), the bionic flow channel (3), the filling cavity (6), the main water inlet and outlet (4), and the secondary water inlet and outlet (5) are all arranged on a side of the base plate (7) close to the cover plate (8).

3. The bat-wing-like battery thermal management liquid cooling plate structure according to claim 2 is characterized in that: The base plate (7) and the cover plate (8) are fastened to each other via a mortise and tenon structure to form a plate body.

4. The bat-wing-like battery thermal management liquid cooling plate structure according to claim 1 is characterized in that: The phase change material is phase change paraffin.

5. The bat-wing-like battery thermal management liquid cooling plate structure according to claim 2 is characterized in that: The base plate (7) and the cover plate (8) are made of aluminum alloy material.

6. The bat-wing-like battery thermal management liquid cooling plate structure according to claim 1 is characterized in that: The main water inlet pipe (10) is connected to a water inlet branch pipe (19), the main water return pipe (11) is connected to a water return branch pipe (20), and the water inlet branch pipe (19) and the water return branch pipe (20) are connected to a heating water tank (18). A fourth regulating valve (21) is provided on the water inlet branch pipe (19), and a fifth regulating valve (22) is provided on the water return branch pipe (20).

Images