A high-speed on-off valve thermal management system based on a composite heat dissipation mechanism

Abstract

The application discloses a high-speed switch valve thermal management system based on a composite heat dissipation mechanism and belongs to the high-speed switch valve field. The system comprises a valve body, a coil, a heat storage component and bionic fins which are arranged in a nested mode, and air cooling, liquid cooling and a control module. The heat storage component is filled with a phase change material for absorbing heat of the coil; the bionic fins are in a leaf vein bifurcation configuration and are matched with a fan to realize air cooling; a liquid cooling circuit is arranged between the heat storage component and the fins to form a serpentine flow channel for liquid cooling. The control module detects the coil temperature in real time, compares the coil temperature with multiple thresholds, starts air cooling or liquid cooling in stages, and constructs a three-stage thermal management architecture of "phase change heat storage-air cooling-liquid cooling". The application can effectively adapt to complex and severe working conditions and guarantee stable operation of the high-speed switch valve.

Description

Technical Field

[0001] This invention belongs to the field of high-speed switching valves, specifically relating to a high-speed switching valve thermal management system based on a composite heat dissipation mechanism. Background Technology

[0002] High-speed switching valves are core actuators in digital hydraulic systems. They achieve high-precision control of flow and pressure through high-frequency PWM drive. During operation, the electromagnetic coil of the high-speed switching valve generates a large amount of Joule heat under continuous high-frequency excitation. If heat dissipation is not timely and effective, the coil temperature can easily rise rapidly to over 80°C. High temperatures not only increase coil resistance and reduce electromagnetic thrust, but also accelerate insulation aging, severely weakening the valve's dynamic response performance and long-term service life.

[0003] To alleviate the coil overheating problem, existing technologies mainly address it through two approaches:

[0004] Firstly, optimize the excitation control strategy. This can be achieved by adjusting the PWM duty cycle or using segmented driving to reduce coil power consumption. However, this method is limited by the compact structure of the valve body and natural convection cooling conditions, and cannot solve the problem of heat accumulation under high-frequency, high-power operating conditions.

[0005] Secondly, active cooling channels are added. For example, Chinese patent CN119670297B discloses a cooling channel design method for a high-speed switching valve that takes into account both energy consumption and heat dissipation performance. By arranging liquid cooling channels on the valve body or shell to achieve forced convection heat dissipation, it overcomes the limitations of natural convection and air cooling to a certain extent.

[0006] However, the aforementioned scheme of arranging the flow channels on the outer casing still faces several technical bottlenecks: On the one hand, the slotted and piped design on the outer casing significantly increases the processing steps and structural complexity of the valve body, weakening the structural strength of the casing. Simultaneously, high-pressure coolant leakage under vibration conditions poses a safety hazard, potentially leading to electrical short circuits. On the other hand, single liquid cooling results in energy waste due to overcooling under light load or low ambient temperature conditions. Most critically, existing technologies lack integrated state sensing and graded temperature control mechanisms; a single heat dissipation strategy cannot meet the diverse heat dissipation needs of high-speed switching valves under instantaneous high loads, long-term continuous operation, and complex and harsh environments. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, the present invention provides a high-speed switching valve thermal management system based on a composite heat dissipation mechanism.

[0008] The technical solution adopted by this invention to solve its technical problem is:

[0009] A high-speed switching valve thermal management system based on a composite heat dissipation mechanism includes a high-speed switching valve, an air-cooled module, a liquid-cooled module, and a control module. The high-speed switching valve includes a valve body, a coil sleeved outside the valve body, and a heat storage component disposed on the outer periphery of the coil. The air-cooled module includes a fan and a finned heat dissipation structure disposed on the outer periphery of the heat storage component.

[0010] The liquid cooling module includes a circulating pump and a liquid cooling circuit. The liquid cooling circuit is disposed inside the heat storage component and is used to transport coolant. The heat storage component is used to absorb and store the heat generated by the coil through the phase change material filled inside. The air cooling module is used to cool the coil by driving airflow through the finned heat dissipation structure with a fan. The liquid cooling module is used to actively cool the heat storage component by driving the coolant to circulate in the liquid cooling circuit with the circulating pump.

[0011] The control module includes a temperature detection unit and a control unit; the temperature detection unit is used to detect the temperature signal of the coil thermal management, and the control unit is used to control the working state of the air-cooling module and / or the liquid-cooling module in stages according to the detected temperature signal of the coil thermal management, so as to adjust the coil temperature.

[0012] Preferably, the heat storage component is an annular sealed cavity structure sleeved around the outer periphery of the coil, with thermally conductive reinforcing rings provided on its inner and outer rings respectively; the thermally conductive reinforcing rings are respectively attached to the outer wall of the coil and the inner wall of the finned heat dissipation structure, for efficiently conducting the heat generated by the coil to the phase change material and the finned heat dissipation structure.

[0013] Preferably, the end face of the heat storage component is provided with cooling holes, and the end face of the finned heat dissipation structure is provided with mounting holes corresponding to the cooling holes; the liquid cooling circuit includes a liquid cooling heat conduction enhancement tube, which passes through the cooling holes and the mounting holes to form a serpentine flow channel inside the heat storage component and the finned heat dissipation structure.

[0014] Preferably, the phase change material is a magnesium-silicon alloy; the thermally conductive reinforcing ring is a graphene thermally conductive material.

[0015] Preferably, the fin heat dissipation structure is a biomimetic fin with a cross-section resembling a leaf vein forking configuration. The biomimetic fin has multiple fin layers with progressively decreasing heights along the axial direction. Each fin layer has secondary fins evenly distributed circumferentially. The secondary fins have Y-shaped forked fins and axial grooves parallel to the airflow direction.

[0016] Preferably, along the airflow direction from upstream to downstream, the number of corresponding Y-shaped forked fins in each fin layer decreases sequentially, forming an internal washing airflow channel that guides the airflow toward the root of the secondary fins.

[0017] The present invention also provides a control method for a high-speed switching valve thermal management system based on a composite heat dissipation mechanism, comprising the following steps:

[0018] (1) Obtain the temperature signal of coil thermal management, wherein the temperature signal of coil thermal management includes the real-time temperature signal of coil: the temperature of coil is collected by temperature detection unit, converted into digital signal by control unit, and then filtered by moving average filtering to obtain the filtered real-time temperature value of coil.

[0019] (2) Compare the real-time temperature value of the coil with the preset first threshold, second threshold and third threshold, wherein the first threshold is less than the second threshold and the second threshold is less than the third threshold;

[0020] (3) When the real-time temperature of the coil is less than the first threshold, the heat generated by the coil is passively absorbed and stored only by the phase change material inside the heat storage component.

[0021] (4) When the real-time temperature value of the coil is greater than or equal to the first threshold and less than the second threshold, the control unit starts the air-cooling module and uses the fan to drive the airflow through the fin heat dissipation structure to perform air-cooling heat dissipation on the coil.

[0022] (5) When the real-time temperature value of the coil is greater than or equal to the second threshold and less than the third threshold, the control unit starts the liquid cooling module and uses the circulating pump to drive the coolant to circulate in the liquid cooling circuit to cool down the heat storage component.

[0023] (6) When the real-time temperature value of the coil is greater than or equal to the third threshold, the control unit reduces the coil operating voltage and implements overheat protection for the high-speed switching valve.

[0024] Preferably, the temperature signal for coil thermal management also includes a real-time temperature signal of the phase change material. The real-time temperature signal of the phase change material serves as an auxiliary status monitoring signal, used to assess the current remaining heat storage capacity of the phase change material, and to monitor the cooling trend of the phase change material after the liquid cooling module is started to verify the heat dissipation operation status of the liquid cooling module.

[0025] Preferably, when the air-cooling module is started, the fan operates at a speed ω(t) = ω 额定 ·(0.5+0.35((T coil (t)-T1) / (T2-T1))) operates, driving airflow through biomimetic fins to cool the coil, where: ω(t) is the fan speed; ω 额定 T is the fan's rated speed. coil (t) represents the real-time temperature of the coil; T1 is the first threshold; T2 is the second threshold.

[0026] Preferably, when the liquid cooling module is started, the circulating pump operates at a flow rate V(t) = V 额定 ·(0.3+0.7((T coil (t)-T2) / (T3-T2))) operates, driving the coolant to cool and dissipate heat from the heat storage components, where: V(t) is the flow rate of the circulating pump; V 额定 T is the rated flow rate of the circulating pump; coil (t) represents the real-time temperature of the coil; T2 represents the second threshold; and T3 represents the third threshold.

[0027] Beneficial effects:

[0028] 1. This invention adopts a three-level thermal management architecture of "phase change heat storage - air cooling - liquid cooling". The control module compares the real-time temperature of the coil with multiple thresholds and activates different heat dissipation mechanisms in stages (passive heat storage → air cooling → liquid cooling) to achieve heat dissipation on demand, taking into account both the heat dissipation requirements under high heat load and energy saving under low heat load.

[0029] 2. A ring-shaped sealed heat storage component is set on the outer periphery of the coil, and the inside is filled with a high latent heat phase change material (magnesium-silicon alloy). Combined with the inner and outer graphene thermally conductive enhancement rings, the Joule heat generated by the coil can be quickly conducted and temporarily stored, effectively suppressing the instantaneous temperature rise peak under high frequency PWM drive and slowing down the rate of coil temperature rise.

[0030] 3. The finned heat dissipation structure adopts a leaf vein-like bifurcated configuration, with multiple fin layers of decreasing height along the axial direction. The secondary fins are equipped with Y-shaped bifurcated fins and axial grooves. The number of Y-shaped bifurcated fins decreases along the airflow direction, forming an internal airflow channel that guides high-speed airflow towards the fin roots, significantly enhancing convective heat transfer efficiency and providing heat dissipation capacity far superior to conventional finned structures.

[0031] 4. Liquid-cooled heat transfer enhancement pipes are inserted between the heat storage component and the fins, forming a serpentine flow channel. The coolant flows directly through the phase change material area for active cooling. This design not only quickly removes heat, but more importantly, it allows the liquefied phase change material to re-solidify, achieving a "regeneration" recovery of heat storage capacity and ensuring that the system can continue to operate effectively under long-term continuous high-load conditions.

[0032] 5. In addition to monitoring the coil temperature, the phase change material temperature is also monitored simultaneously as an auxiliary status signal to assess the remaining heat storage capacity and verify the operating status of the liquid cooling module. When the temperature exceeds the third threshold, the coil operating voltage is automatically reduced to implement overheat protection, forming a closed-loop management of "sensing-judgment-execution-protection". This effectively prevents coil insulation aging and electromagnetic thrust attenuation, and significantly improves the long-term operational stability and service life of the high-speed switching valve under harsh conditions. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Figure 1 This is a schematic diagram of the high-speed switching valve thermal management system provided in an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of the thermal storage component structure provided in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the biomimetic fin structure provided in an embodiment of the present invention;

[0037] Figure 4 This is a velocity distribution cloud map of the flow field section of the biomimetic fin provided in an embodiment of the present invention;

[0038] Figure 5 A logic diagram of a high-speed switching valve thermal management control method provided in an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] In the diagram: Ⅰ. High-speed switching valve; Ⅱ. Air-cooled module; Ⅲ. Liquid-cooled module; Ⅳ. Control module; 1. Heat storage component; 11. Cooling hole; 12. Phase change material; 13. Thermally conductive reinforcing ring; 2. Coil; 3. Valve body; 4. Fan; 5. Bionic fins; 51. Primary fin; 52. Secondary fin; 53. Tertiary fin; 54. Mounting hole; 55. Secondary fin; 56. Axial groove; 57. Y-shaped bifurcated fin; 6. Circulation pump; 7. Liquid-cooled pipe; 71. Liquid-cooled thermally conductive reinforcing pipe; 711. Inlet; 712. Outlet; 72. Hose; 8. Coolant; 9. Coolant tank; 10. Thin-film temperature probe; 14. Control unit. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0042] like Figure 1As shown, this invention discloses a high-speed switching valve thermal management system based on a composite heat dissipation mechanism, comprising a high-speed switching valve I, an air-cooled module II, a liquid-cooled module III, and a control module IV. The high-speed switching valve I includes a coil 2, a valve body 3, and a heat storage component 1; the coil 2 is concentrically mounted on the outside of the valve body 3; the heat storage component 1 is mounted on the outer periphery of the coil 2. The fan 4 of the air-cooled module II cooperates with biomimetic fins 5 to achieve forced convection. The circulating pump 6 of the liquid-cooled module III is connected to the coolant tank 9 via a liquid-cooling pipe 7. The control module IV includes a temperature detection unit and a control unit. In this embodiment, the temperature detection unit uses a thin-film temperature probe 10, which is mounted axially and circumferentially on the heat storage component 1 and the coil 2. The control unit 14 collects the temperature of the phase change material 12 and the coil 2 through the thin-film temperature probe 10.

[0043] like Figure 2 As shown, the heat storage component 1 is an annular sealed cavity filled with phase change material 12. Both the inner and outer rings of the heat storage component 1 are provided with thermally conductive reinforcing rings 13, which are respectively attached to the outer wall of the coil 2 and the inner wall of the biomimetic fins 5 to achieve rapid heat conduction. The heat storage component 1 is provided with cooling holes 11, phase change material 12, and thermally conductive reinforcing ring 13. The height of the heat storage component 1 is the same as that of the coil 2, the inner diameter of the heat storage component 1 is the same as that of the coil 2, and the outer diameter of the heat storage component 1 is greater than 1.5 times the inner diameter of the heat storage component 1. The cooling holes 11 penetrate through the end face of the heat storage component 1 and are distributed in 1 to 3 groups radially along the end face. Each group has 21 to 28 holes evenly distributed circumferentially for installing liquid-cooled thermally conductive reinforcing tubes 71. The phase change material 12 is a high-density phase change material with a large latent heat and is installed in the cavity of the heat storage component 1. In this embodiment, the phase change material 12 is selected as a magnesium-silicon alloy. In this embodiment, the thermally conductive reinforcing ring 13 is a radially high thermal conductivity graphene material and is set in the inner and outer rings of the heat storage component 1. During installation, it is attached to the outer wall of the coil 2 and the inner wall of the bionic fin 5, respectively, to efficiently conduct the heat generated by the coil 2 to the phase change material 12 and the bionic fin 5.

[0044] like Figure 3As shown, the biomimetic fin 5 is installed on the outer periphery of the heat storage component 1. Its cross-section is a leaf vein-like bifurcated structure. The biomimetic fin 5 includes a primary fin 51, a secondary fin 52, a tertiary fin 53, a mounting hole 54, a secondary fin 55, an axial groove 56, and a Y-shaped bifurcated fin 57. The height of the biomimetic fin 5 is the same as that of the heat storage component 1, and the inner diameter of the biomimetic fin 5 is the same as the outer diameter of the heat storage component 1. The outer diameter of the biomimetic fin 5 is greater than 1.5 times the outer diameter of the heat storage component 1. The height of the primary fin 51 > the height of the secondary fin 52 > the height of the tertiary fin 53. The primary fin 51... The secondary fins 52 and tertiary fins 53 each have 12 to 24 sets of the same number of secondary fins 55 evenly distributed along their circumference. The secondary fins 55 are provided with axial grooves 56 parallel to the airflow direction. Each set of secondary fins 55 of the primary fin 51 is provided with 3 Y-shaped forked fins 57. Each set of secondary fins 55 of the secondary fin 52 is provided with 2 Y-shaped forked fins 57. Each set of secondary fins 55 of the tertiary fin 53 is provided with 1 Y-shaped forked fin 57. The primary fins 51 and tertiary fins 53 are provided with mounting holes 54 corresponding to the cooling holes 11.

[0045] like Figure 4 The bionic fin 5 shown guides the high-speed airflow inward and blows it toward the root of the secondary fin 55, enhancing the heat exchange efficiency between the high-speed airflow and the coil 2, and strengthening the heat dissipation capacity of the bionic fin 5. Compared with fins without bionic structure, the heat dissipation capacity is greatly improved.

[0046] like Figures 1-3 As shown, the liquid cooling pipe 7 is equipped with a liquid cooling heat conduction enhancement pipe 71 and a hose 72. The liquid cooling heat conduction enhancement pipe 71 has an inlet 711 and an outlet 712. The inlet 711 is connected to the circulation pump 6 through the hose 72, and the outlet 712 is connected to the coolant tank 9 through the hose 72. The coolant 8 flows through the circulation pump 6, the hose 72, the inlet 711, and the liquid cooling heat conduction enhancement pipe 71 to dissipate heat from the heat storage component 1, and then flows back to the coolant tank 9 through the outlet 712 and the hose 72. The liquid cooling heat conduction enhancement pipe 71 passes between the cooling hole 11 and the mounting hole 54, forming a continuous serpentine flow channel inside the heat storage component 1 and the biomimetic fins 5. Driven by the circulation pump 6, the coolant 8 flows in from the inlet and out from the outlet, directly cooling the phase change material 12 through the serpentine path, thus regenerating the heat storage capacity.

[0047] like Figure 5 As shown, this embodiment also discloses a control method for a high-speed switching valve thermal management system based on a composite heat dissipation mechanism, including the following steps:

[0048] S1. Temperature signal acquisition and preprocessing: The temperature T of the phase change material is acquired through a thin-film temperature probe. ma and coil temperature T coil The signal is converted into a digital signal by the analog-to-digital converter built into the control unit 14, and then filtered by a moving average filter to obtain the real-time temperature value T of the phase change material.ma (t) and the real-time temperature value T of the coil coil (t);

[0049] S2. Temperature grading judgment step: The control unit 14 compares the real-time temperature value T of the coil coil (t) with the preset first threshold T1, second threshold T2 and third threshold T3, where T1 < T2 < T3, and executes a graded regulation and control strategy; when T coil (t) < T1, execute the first-level regulation and control step S3; when T1 ≤ T coil (t) < T2, execute the second-level regulation and control step S4; when T2 ≤ T coil (t) < T3, execute the third-level regulation and control step S5; when T coil (t) ≥ T3, execute the fourth-level regulation and control step S6;

[0050] Meanwhile, the control unit 14 evaluates the current physical state and remaining heat storage capacity thereof according to the detected real-time temperature value T of the phase change material 12 ma (t), if the real-time temperature value T of the phase change material ma (t) is lower than the phase change temperature of the phase change material 12, it indicates that the phase change material 12 is currently in a solid state, no phase change latent heat release has occurred, and has sufficient latent heat heat storage capacity; at this time, the heat dissipation of the air cooling module is sufficient to maintain the coil temperature stable, and there is no need to start the liquid cooling module, which is beneficial to the low energy consumption operation of the system. Conversely, if the real-time temperature value T of the phase change material ma (t) reaches or exceeds the phase change temperature of the phase change material 12, it indicates that the phase change material starts to absorb latent heat and undergoes solid-liquid phase change, and its temperature will not rise sharply at this time;

[0051] However, if after the liquid cooling module is started, the temperature fails to drop effectively or even continues to rise, it indicates that the liquid cooling heat dissipation capacity is insufficient or the liquid cooling module is abnormal; when the phase change material is saturated after absorbing latent heat (completely liquefied), if it cannot be cooled in time, it will completely lose the passive heat storage capacity, which will directly lead to the coil temperature out of control and cause the risk of system thermal runaway. Based on this physical characteristic, after the liquid cooling module is started, the control unit 14 monitors the real-time temperature value T of the phase change material ma The cooling rate of (t) can directly verify the working state of the liquid cooling system;

[0052] S3. First-level regulation and control step - phase change material heat storage: when T coil (t) is less than the first preset threshold T1, the phase change material absorbs and stores the heat generated by the coil;

[0053] S4. Second-level regulation and control step - fin air cooling heat dissipation: when T coilWhen (t) is greater than or equal to the first preset threshold T1 and less than the second preset threshold T2, the phase change material begins to undergo a solid-liquid phase change, and the air-cooling module is activated, with the fan operating at a speed ω(t) = ω 额定 ·(0.5+0.35((T coil (t)-T1) / (T2-T1))) operates, driving airflow through biomimetic fins to cool the coil, where: ω(t) is the fan speed; ω 额定 T is the fan's rated speed. coil (t) represents the real-time temperature of the coil; T1 is the first threshold; T2 is the second threshold;

[0054] S5, Third-Level Regulation Step - Liquid Cooling Circulation: When T coil When (t) is greater than or equal to the second preset threshold T2 and less than the third preset threshold T3, the liquid cooling module is started, and the circulation pump operates at a flow rate V(t) = V 额定 ·(0.3+0.7((T coil (t)-T2) / (T3-T2))) operates, driving the coolant to cool and dissipate heat from the heat storage components, where: V(t) is the flow rate of the circulating pump; V 额定 T is the rated flow rate of the circulating pump; coil (t) represents the real-time temperature of the coil; T2 represents the second threshold; T3 represents the third threshold;

[0055] S6, Fourth-level regulation step - Protective regulation: When T coil When (t) is greater than or equal to the third preset threshold T3, control the coil voltage to protect the high-speed switching valve.

[0056] The coil 2 of the high-speed switching valve has a preset maximum insulation temperature rating T(max), which is determined by the material properties of the coil insulation material. In this embodiment, the first threshold T1, the second threshold T2, and the third threshold T3 are set by those skilled in the art based on the insulation temperature rating and heat dissipation strategy of the coil. The setting logic is as follows:

[0057] The first threshold T1 is set to 40%~60%T(max), which serves as the upper limit of pure phase change passive thermal storage.

[0058] The second threshold T2 is set to 60%~80%T (max), serving as the forced intervention zone to trigger air cooling.

[0059] The third threshold T3 is set to 80%~95%T(max), serving as the high-temperature critical zone for triggering liquid cooling and voltage reduction protection.

[0060] To further illustrate the physical implementation of the aforementioned thresholds, a Class B insulated coil, well-known to those skilled in the art, is used as an example for the high-speed switching valve, with a maximum insulation temperature rating T(max) of 130°C. Following the above setting method, the first threshold T1 in this embodiment can be specifically set to 60°C, the second threshold T2 to 80°C, and the third threshold T3 to 100°C.

[0061] In this embodiment, components such as the high-speed switching valve I, air-cooled module II, liquid-cooled module III, and control module IV, which are not disclosed in detail, adopt existing products or structures known to those skilled in the art, and the connection or control methods between them adopt existing connection or control methods known to those skilled in the art.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications and equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A high-speed on / off valve thermal management system based on a composite heat dissipation mechanism, characterized in that, The system includes a high-speed switching valve, an air-cooled module, a liquid-cooled module, and a control module. The high-speed switching valve includes a valve body, a coil sleeved outside the valve body, and a heat storage component disposed around the coil. The air-cooled module includes a fan and a finned heat dissipation structure disposed around the heat storage component. The heat storage component is an annular sealed cavity structure sleeved on the outer periphery of the coil, with thermally conductive reinforcing rings provided on its inner and outer rings respectively; the thermally conductive reinforcing rings are respectively attached to the outer wall of the coil and the inner wall of the finned heat dissipation structure, and are used to efficiently conduct the heat generated by the coil to the phase change material and the finned heat dissipation structure. The heat dissipation structure is a biomimetic fin with a cross-section resembling a leaf vein forking configuration. The biomimetic fin has multiple fin layers with progressively decreasing heights along the axial direction. Each fin layer has secondary fins evenly distributed circumferentially. The secondary fins have Y-shaped forked fins and axial grooves parallel to the airflow direction. Along the airflow direction from upstream to downstream, the number of corresponding Y-shaped forked fins on each fin layer decreases sequentially, forming an internal washing airflow channel that guides the airflow towards the root of the secondary fins. The liquid cooling module includes a circulating pump and a liquid cooling circuit. The liquid cooling circuit is located inside the heat storage component and is used to transport coolant. The heat storage component is used to absorb and store the heat generated by the coil through the phase change material filled inside. The air cooling module is used to cool the coil by driving airflow through the finned heat dissipation structure with a fan. The liquid cooling module is used to actively cool the heat storage component by driving the coolant to circulate in the liquid cooling circuit with the circulating pump. The control module includes a temperature detection unit and a control unit; the temperature detection unit is used to detect the temperature signal of the coil thermal management, and the control unit is used to control the working state of the air-cooling module and / or the liquid-cooling module in stages according to the detected temperature signal of the coil thermal management, so as to adjust the coil temperature.

2. The high-speed on / off valve thermal management system based on a composite heat dissipation mechanism according to claim 1, characterized in that, The end face of the heat storage component is provided with cooling holes, and the end face of the finned heat dissipation structure is provided with mounting holes corresponding to the cooling holes; the liquid cooling circuit includes a liquid cooling heat conduction enhancement tube, which passes through the cooling holes and the mounting holes to form a serpentine flow channel inside the heat storage component and the finned heat dissipation structure.

3. The high-speed on / off valve thermal management system based on a composite heat dissipation mechanism according to claim 1, characterized in that, The phase change material is a magnesium-silicon alloy; the thermally conductive reinforcing ring is a graphene thermally conductive material.

4. A control method for a high-speed on / off valve thermal management system based on a composite heat dissipation mechanism as described in any one of claims 1-3, characterized in that, Includes the following steps: (1) Obtain the temperature signal of coil thermal management, wherein the temperature signal of coil thermal management includes the real-time temperature signal of coil: the temperature of coil is collected by temperature detection unit, converted into digital signal by control unit, and then filtered by moving average filtering to obtain the filtered real-time temperature value of coil. (2) Compare the real-time temperature value of the coil with the preset first threshold, second threshold and third threshold, wherein the first threshold is less than the second threshold and the second threshold is less than the third threshold; (3) When the real-time temperature of the coil is less than the first threshold, the heat generated by the coil is passively absorbed and stored only by the phase change material inside the heat storage component. (4) When the real-time temperature value of the coil is greater than or equal to the first threshold and less than the second threshold, the control unit starts the air-cooling module and uses the fan to drive the airflow through the fin heat dissipation structure to perform air-cooling heat dissipation on the coil. (5) When the real-time temperature value of the coil is greater than or equal to the second threshold and less than the third threshold, the control unit starts the liquid cooling module and uses the circulating pump to drive the coolant to circulate in the liquid cooling circuit to cool down the heat storage component. (6) When the real-time temperature value of the coil is greater than or equal to the third threshold, the control unit reduces the coil operating voltage and implements overheat protection for the high-speed switching valve.

5. The control method for a high-speed on / off valve thermal management system based on a composite heat dissipation mechanism according to claim 4, characterized in that, The temperature signal for coil thermal management also includes the real-time temperature signal of the phase change material. The real-time temperature signal of the phase change material serves as an auxiliary status monitoring signal, used to assess the current remaining heat storage capacity of the phase change material, and to monitor the cooling trend of the phase change material after the liquid cooling module is started to verify the heat dissipation operation status of the liquid cooling module.

6. The control method for a high-speed on / off valve thermal management system based on a composite heat dissipation mechanism according to claim 4, characterized in that, When the air-cooling module is started, the fan rotates at a certain speed. ω ( t )= ω 额定 ·(0.5+0.35(( T coil ( t )- T 1) / ( T 2- T 1))) Operation, driving airflow through biomimetic fins to provide air cooling for the coil, where: ω ( t () represents the fan speed; ω 额定 This refers to the fan's rated speed. T coil ( t () represents the real-time temperature value of the coil; T 1 is the first threshold; T 2 is the second threshold.

7. The control method for a high-speed on / off valve thermal management system based on a composite heat dissipation mechanism according to claim 4, characterized in that, When the liquid cooling module is started, the circulating pump operates at a flow rate of... V ( t )= V 额定 ·(0.3+0.7(( T coil ( t )- T 2) / ( T 3- T 2))) Operation, driving the coolant to cool and dissipate heat from the heat storage components, where: V ( t () represents the flow rate of the circulating pump; V 额定 This is the rated flow rate of the circulating pump; T coil ( t () represents the real-time temperature value of the coil; T 2 is the second threshold; T 3 is the third threshold.

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