Internal temperature rise self-adaptive adjusting method and system for explosion-proof control box

Abstract

The invention discloses an internal temperature rise self-adaptive adjusting method and system for an explosion-proof control box, and relates to the technical field of electrical equipment self-adaptive heat dissipation control, and the method comprises the steps: recognizing a plurality of heat sources in the explosion-proof control box; establishing a plurality of thermally induced heat conduction bridges for connecting the heat source and the heat dissipation module outside the box; and a variable heat conduction topological structure is constructed, a preset temperature rise threshold value is set, and when the real-time temperature rise of any heat source is larger than the corresponding preset temperature rise threshold value, the corresponding thermally-induced heat conduction bridge conducts heat triggering conduction to transfer heat. The technical problems of low heat dissipation efficiency, local overheating and difficulty in precise control of internal temperature rise caused by the fact that a heat dissipation path cannot be dynamically adjusted according to real-time temperature rise of each heat source in a traditional heat dissipation mode in the power distribution or power supply electrical equipment are solved, adaptive adjustment of the internal temperature rise of the explosion-proof control box in the power distribution or power supply electrical equipment is achieved, and the reliability of the explosion-proof control box is improved. The heat dissipation efficiency is improved, local overheating is avoided, and the internal temperature rise is precisely controlled.

Description

Technical Field

[0001] This invention relates to the field of adaptive heat dissipation control technology for electrical equipment, and particularly to a method and system for adaptive adjustment of internal temperature rise in explosion-proof control boxes. Background Technology

[0002] In the operation of electrical equipment and components for power distribution or supply, explosion-proof control boxes are critical devices, and their internal temperature rise control is crucial for the safe and stable operation of the equipment. Current technologies often employ fixed heat dissipation structures to cool the interior of explosion-proof control boxes. These methods are effective in scenarios with stable heat source distribution and balanced heat output. However, with the increase in equipment power and the diversification of heat sources, traditional heat dissipation technologies have revealed limitations in application. Due to the enclosed nature of explosion-proof control boxes and the complex distribution of multiple heat sources inside, traditional fixed heat dissipation structures cannot dynamically adjust the heat dissipation path according to the real-time temperature rise of each heat source. This results in low heat dissipation efficiency, a high risk of localized overheating, and makes it difficult to meet the needs of explosion-proof control boxes for precise internal temperature rise control. Summary of the Invention

[0003] This application provides a method and system for adaptive internal temperature rise adjustment of explosion-proof control boxes, which solves the technical problem that traditional heat dissipation methods in power distribution or power supply electrical equipment cannot dynamically adjust the heat dissipation path according to the real-time temperature rise of each heat source, resulting in low heat dissipation efficiency, local overheating, and difficulty in accurately controlling the internal temperature rise.

[0004] The first aspect of this application provides a method for adaptive adjustment of internal temperature rise in an explosion-proof control box. The method includes: identifying multiple heat sources inside the explosion-proof control box; establishing multiple thermally induced thermal bridges connecting the multiple heat sources to an external heat dissipation module, wherein one end of each thermally induced thermal bridge is connected to each heat source location via a first thermally conductive block, and the other end is connected to the external heat dissipation module via a second thermally conductive block via a thermal triggering method; constructing a variable thermal conductivity topology from the multiple thermally induced thermal bridges; setting multiple preset temperature rise thresholds for the multiple thermally induced thermal bridges; and when the real-time temperature rise of any of the multiple heat sources exceeds the corresponding preset temperature rise threshold, the thermally induced thermal bridge corresponding to the abnormal heat source is thermally triggered to conduct, so as to transfer heat from the abnormal heat source.

[0005] A second aspect of this application provides an internal temperature rise adaptive adjustment system for an explosion-proof control box. The system includes: an explosion-proof control box heat source identification module for identifying multiple heat sources inside the explosion-proof control box; a connection construction module for establishing multiple thermally induced thermal bridges connecting the multiple heat sources to an external heat dissipation module, wherein one end of each thermally induced thermal bridge is connected to each heat source location via a first thermally conductive block, and the other end is connected to the external heat dissipation module via a second thermally conductive block via a thermal triggering method; and a variable thermal topology construction module for constructing a variable thermal topology from the multiple thermally induced thermal bridges, setting multiple preset temperature rise thresholds for the multiple thermally induced thermal bridges, wherein when the real-time temperature rise of any of the multiple heat sources exceeds the corresponding preset temperature rise threshold, the thermally induced thermal bridge corresponding to the abnormal heat source is thermally triggered to conduct, so as to transfer heat from the abnormal heat source.

[0006] One or more technical solutions provided in this application have at least the following technical effects or advantages: This application identifies multiple heat sources within the explosion-proof control box of electrical equipment and components used in power distribution or supply, establishes multiple thermally induced thermal bridges connecting the heat sources to external heat dissipation modules, constructs a variable thermal topology, and sets a preset temperature rise threshold. When the real-time temperature rise of a heat source exceeds the threshold, the corresponding thermally induced thermal bridge is thermally triggered to transfer heat. When multiple heat sources exceed the threshold, they are triggered sequentially based on calculated priorities, thereby achieving adaptive adjustment of the internal temperature rise of the explosion-proof control box. This makes heat dissipation more precise and efficient, meets the requirements for safe operation of equipment, and achieves the technical effect of adaptive adjustment of the internal temperature rise of the explosion-proof control box in electrical equipment used in power distribution or supply, improving heat dissipation efficiency, avoiding local overheating, and precisely controlling the internal temperature rise. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a flowchart illustrating the internal temperature rise adaptive adjustment method for an explosion-proof control box provided in an embodiment of this application.

[0009] Figure 2 This is a schematic diagram of the internal temperature rise adaptive adjustment system for an explosion-proof control box provided in an embodiment of this application.

[0010] Figure labeling: Explosion-proof control box heat source identification module 1, connection construction module 2, variable heat conduction topology construction module 3. Detailed Implementation

[0011] This application provides a method and system for adaptive internal temperature rise adjustment of explosion-proof control boxes, which solves the technical problem that traditional heat dissipation methods in power distribution or power supply electrical equipment cannot dynamically adjust the heat dissipation path according to the real-time temperature rise of each heat source, resulting in low heat dissipation efficiency, local overheating, and difficulty in accurately controlling the internal temperature rise.

[0012] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0013] It should be noted that the terms "first," "second," etc., in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or modules not explicitly listed or inherent to such processes, methods, products, or devices.

[0014] Example 1, as Figure 1 As shown, an adaptive temperature rise adjustment method for an explosion-proof control box is provided, wherein the method includes: Step A100: Identify multiple heat sources inside the explosion-proof control box.

[0015] In this embodiment of the application, the explosion-proof control box is a key device in the power distribution or power supply electrical equipment and components. It usually has a closed structure and contains multiple heating elements, i.e., heat sources. It is mainly used to control the operation of electrical equipment in dangerous environments such as flammable and explosive environments.

[0016] Specifically, the method for identifying multiple heat sources inside the explosion-proof control box is as follows: monitor the equipment temperature to obtain a sample set containing historical temperature data, analyze the temperature rise change curve to output the temperature rise rate, temperature rise value, and duration, and calculate the heat source contribution index. Extract the k devices with the index greater than the preset value and mark them as heat sources. The specific steps are explained in detail in A110-A130.

[0017] Step A200: Establish multiple thermally induced thermal bridges connecting the multiple heat sources and the external heat dissipation module. One end of each thermally induced thermal bridge is connected to each heat source location through a first thermally conductive block, and the other end is connected to the external heat dissipation module through a second thermally conductive block via a thermal triggering method.

[0018] In this embodiment, the thermally induced thermal bridge is a component connecting the heat source inside the explosion-proof control box of power distribution or power supply equipment to the heat dissipation module outside the box. It consists of a first thermally conductive block, a thermodeformable material, and a second thermally conductive block. The heat dissipation module is a heat dissipation device installed outside the explosion-proof control box, typically employing structures such as fins and heat pipes, used to receive the heat transferred by the thermally induced thermal bridge and dissipate it to the external environment.

[0019] Optionally, firstly, based on the identified multiple heat sources, determine the specific location of each heat source inside the box. For example, the marked contactor is in the middle left layer inside the explosion-proof control box, the relay is in the upper right layer, and the circuit breaker is in the center at the bottom. For these three heat sources, an independent thermally induced thermal bridge needs to be configured for each heat source.

[0020] Next, the core components of the thermotropic thermal bridge are prepared. Each thermotropic thermal bridge includes a first thermally conductive block, a thermotropic deformation material (shape memory alloy), and a second thermally conductive block. The first thermally conductive block is made of copper with a high thermal conductivity and a thickness of 5mm. Its surface area matches the heating surface of the corresponding heat source, and it is tightly attached to the surface of each heat source with thermally conductive adhesive.

[0021] Subsequently, a thermo-deformable material (shape memory alloy) is connected between the first and second heat-conducting blocks. The alloy is in a contracted state at room temperature of 25°C. At this time, a certain gap is maintained between the first and second heat-conducting blocks, and a heat conduction path is not formed. The second heat-conducting block is made of aluminum material with a thickness of 5mm. It is fixed to the finned heat dissipation module outside the box by bolts. The contact surface is polished to reduce the contact thermal resistance and improve the heat dissipation efficiency of the heat dissipation module.

[0022] The second thermally conductive block of each thermally induced thermal bridge is connected to a different area of ​​the external heat dissipation module. For example, the thermally induced thermal bridge of the contactor is connected to the left area of ​​the heat dissipation module, and the relay is connected to the right area, to avoid heat concentration affecting the heat dissipation effect. When the heat source temperature does not reach the preset threshold, the shape memory alloy remains in a contracted state, and the first and second thermally conductive blocks are separated. When the temperature exceeds the threshold, the alloy is heated and elongates, pushing the first and second thermally conductive blocks into close contact to form a complete heat conduction path.

[0023] By configuring each heat source with a thermally conductive bridge containing thermally deformable material, a targeted and dynamic connection between the heat source and the external heat dissipation module is achieved, providing a reliable structural basis for subsequent heat transfer triggered by real-time temperature rise.

[0024] Step A300: A variable thermal conductivity topology is constructed from the plurality of thermally induced thermal bridges. Multiple preset temperature rise thresholds are set for the plurality of thermally induced thermal bridges. When the real-time temperature rise of any of the plurality of heat sources is greater than the corresponding preset temperature rise threshold, the thermally induced thermal bridge corresponding to the abnormal heat source is thermally triggered to conduct, so as to transfer heat to the abnormal heat source.

[0025] In this embodiment, the variable thermal conductivity topology is constructed from multiple thermally induced thermal bridges, and the thermal conductivity connection between each heat source and the external heat dissipation module changes with the thermal trigger conduction state of the thermally induced thermal bridges.

[0026] In one embodiment of this application, firstly, the connection conflict between the first state of non-conducting and the second state of fully conducting of all thermally induced thermal bridges is detected. When there is no conflict between the two, the variable thermal topology structure formed by the current thermally induced thermal bridge circuit is output. The specific steps are described in detail in A340-A360.

[0027] Next, multiple preset temperature rise thresholds are set, and the temperature rise variation curve of the temperature monitoring sample set of the equipment is differentiated to obtain the temperature rise derivative variation curve. The temperature rise peak of the curve is extracted as the preset temperature rise threshold of each equipment and output. The specific steps are explained in detail in A391-A392.

[0028] Finally, when the real-time temperature rise of any heat source exceeds the corresponding preset temperature rise threshold, the corresponding thermally induced thermal bridge undergoes deformation, enabling the first and second thermally conductive blocks to establish a thermally conductive connection path. Through this path, the heat from the abnormal heat source is transferred to the external heat dissipation module. The specific steps are explained in detail in A381-A382.

[0029] Furthermore, step A300 in the method provided in this application embodiment includes: A310: When the real-time temperature rise of at least two heat sources is greater than the corresponding preset temperature rise threshold, the temperature rise rate, the importance of the heat source location, and the power density of the at least two heat sources are collected.

[0030] A320: Prioritize the temperature rise rate, location importance, and power density of the at least two heat sources to obtain the thermal response priority of the at least two heat sources.

[0031] A330: Control the thermally triggered thermal bridges corresponding to the at least two heat sources to conduct thermally according to the thermal response priority.

[0032] Specifically, during the operation of the explosion-proof control box, when the real-time temperature rise of multiple heat sources simultaneously exceeds their respective preset temperature rise thresholds, the system needs to prioritize these heat sources to achieve orderly heat dissipation. First, the system collects the temperature rise rate of each overheating heat source, i.e., how quickly the temperature rises per unit time. This parameter reflects the trend of the heat source's temperature rise and its potential danger level. Simultaneously, it collects the importance of the heat source's location. This indicator is determined based on the heat source's function in the circuit and the scope of its fault impact; for example, the location importance of main circuit control components is higher than that of auxiliary circuit components. In addition, it collects the power density, i.e., the power per unit volume. Higher power density means more heat is generated per unit time.

[0033] Next, priority calculation is performed, quantifying the three parameters collected: temperature rise rate, heat source location importance, and power density. A higher temperature rise rate results in a higher quantification score; the heat source location importance is assigned a value according to a pre-set weighting coefficient; and the power density is normalized based on the power per unit volume. These three quantified parameters are then summed using a certain weighting coefficient to obtain the thermal response priority value for each heat source; a higher value indicates a higher priority.

[0034] Finally, based on the calculated thermal response priority values, the system sequentially controls the corresponding thermally triggered heat bridges in descending order of priority. The heat bridge corresponding to the highest priority heat source is activated first, transferring the heat generated by that heat source to the external heat dissipation module through the heat conduction path. Once the temperature drops to a safe range, the heat bridge automatically disconnects. Subsequently, the heat bridge of the next highest priority heat source is triggered, repeating the above heat dissipation process until the temperature of all overheated heat sources returns to normal.

[0035] By collecting the temperature rise rate, location importance, and power density parameters of multiple heat sources, a weighted calculation method is used to determine the thermal response priority, and the thermal bridge is triggered in sequence accordingly. This achieves orderly heat dissipation when multiple heat sources overheat, ensuring priority cooling of critical equipment and avoiding excessive consumption of heat dissipation resources, thereby improving the overall thermal management efficiency of the explosion-proof control box.

[0036] Furthermore, step A300 in the method provided in this application embodiment includes: A340: Detect the connection conflict return result of the variable thermal conductivity topology in the first state and the connection conflict return result of the variable thermal conductivity topology in the second state.

[0037] A350: In the first state, all thermally induced thermal bridges are in a non-thermally triggered conducting state, and in the second state, all thermally induced thermal bridges are in a thermally triggered conducting state.

[0038] A360: When both the connection conflict return result in the first state and the connection conflict return result in the second state are empty, the variable thermal topology is output by the current line of the plurality of thermally induced thermal bridges.

[0039] In this embodiment, non-thermally triggered conduction refers to the state of the thermally induced thermal bridge when the ambient temperature has not reached a preset trigger threshold. At this time, the shape memory alloy constituting the thermal bridge does not undergo significant deformation, resulting in the first and second thermally conductive blocks of the thermal bridge being separated or not in close contact. Heat cannot form an effective conduction path through this thermal bridge, and the thermal conductivity remains at a low level. Thermally triggered conduction refers to the state of the thermally induced thermal bridge when the ambient temperature reaches a preset trigger threshold. At this time, the shape memory alloy deforms due to heat, pushing the first and second thermally conductive blocks into close contact, thus forming a continuous thermal conduction path. Heat can then be quickly transferred from the heat source to the heat dissipation component through this path.

[0040] Optionally, firstly, conflict detection is performed on the system in the first state, where all thermally conductive bridges are not triggered to conduct. In this state, the first and second thermally conductive blocks of each thermally conductive bridge are separated, and the spacing remains at the initial design value. For example, the spacing between the thermally conductive bridges AB corresponding to the contactor is 8mm, the spacing between the thermally conductive bridges CD corresponding to the relay is 7mm, and the spacing between the thermally conductive bridges EF corresponding to the circuit breaker is 9mm. By combining 3D modeling with laser ranging technology, the relative path distance between adjacent thermally conductive bridges is measured. A preset safe relative distance of 10mm is set. The detection shows that the spacing between all adjacent thermally conductive bridge pairs is greater than 10mm, such as the spacing between AB and CD being 15mm and the spacing between CD and EF being 14mm. Therefore, there is no conflict in the first state, and an empty result is returned.

[0041] Subsequently, the extreme case of all heat sources simultaneously triggering a temperature rise was simulated, causing the system to enter a second state where all thermally induced thermal bridges are connected. At this point, the shape memory alloy elongates upon heating, pushing the first and second thermally conductive blocks into contact, increasing the overall length of the thermal bridges. The relative path distances between adjacent thermal bridges were remeasured; for example, the distance between AB and CD became 9mm, and the distance between CD and EF became 11mm. Comparing the measurement results with the preset safety distances, it was found that the distance between AB and CD was less than 10mm, indicating a conflict. The conflict pair was recorded as AB-CD, with the conflict location on the right side of the middle layer of the enclosure, and a conflict distance of 9mm. A connection conflict return result containing this information was generated.

[0042] Finally, the detection results of the first and second states were comprehensively evaluated. Due to the conflict in the second state, the layout of the thermally induced heat bridges needed to be optimized and adjusted. For example, the heat bridge AB corresponding to the contactor was shifted 3mm to the left, and the adjusted topology was re-detected. The relative path distances in each state were measured again, and it was found that the distance between AB and CD became 12mm in the second state, and the distance between all adjacent heat bridge pairs was greater than 10mm. At this time, the conflict detection results for both states were empty.

[0043] By detecting conflicts in both non-conductive and fully conductive extreme states of the variable thermally conductive topology, and combining precise distance measurement and comparison, it is ensured that the final output topology has no connection conflicts under various operating conditions, providing a reliable structural basis for the adaptive adjustment of the internal temperature rise of the explosion-proof control box.

[0044] Furthermore, step A360 in the method provided in this application embodiment includes: A371: When at least one of the connection conflict return results in the first state and the connection conflict return results in the second state is not empty, a thermally induced thermal bridge conflict pair is determined.

[0045] A372: Reconstruct multiple thermally induced thermal bridges by optimizing the connection paths of the thermally induced thermal bridge conflict pairs, and update the variable thermal topology.

[0046] Specifically, during the construction of a variable thermally conductive topology, if the conflict detection result of the first or second state is not empty, the conflict handling mechanism must be activated immediately. For example, in the topology detection of an explosion-proof control box, in the first state, the spacing between all thermally conductive bridges is greater than the preset safety distance of 10mm, and an empty result is returned; however, in the second state, the spacing between the thermally induced thermally conductive bridge AB corresponding to the contactor and the CD corresponding to the relay is only 9mm, which is less than the safety distance, and a result containing the conflict position of the AB-CD conflict pair with a conflict distance of 9mm on the right side of the middle layer of the box is returned. At this time, because there is a conflict in the second state, the conflict object must be identified first, and the AB and CD are determined to be a thermally induced thermally conductive bridge conflict pair by comparing the detection data.

[0047] For the identified thermally induced thermal bridge conflicts, reconstruction was initiated by optimizing the connection path. First, the spatial dimensions of the conflict area were measured, assuming a lateral adjustable space of 5mm and a longitudinal space of 8mm on the right side of the middle layer of the enclosure. Based on this, the direction of thermal bridge AB was adjusted, shifting it 3mm to the left. After adjustment, the relative path distance between the two was recalculated, reaching 12mm in the second state, exceeding the preset safety distance of 10mm. For the optimized thermal bridge, the spacing between AB and CD in the first state was re-checked, and it still exceeded the preset safety distance of 10mm, thus meeting the safety requirements.

[0048] After handling a single conflict, a secondary test is required on the thermally induced thermal bridges of the entire updated variable thermal topology to ensure that the optimization operation did not trigger new conflicts. The test revealed that the relative path distance between all adjacent thermally induced thermal bridges after optimization was greater than the preset safe relative distance of 10mm. Simultaneously, the structural stability of the thermal bridges was verified to ensure that the optimized path would not affect the deformation of the shape memory alloy, thus ensuring that the thermally induced thermal bridges meet the heat dissipation performance requirements.

[0049] By identifying conflicting pairs and optimizing the connection paths of thermally induced thermal bridges, combined with spatial adjustment and secondary detection, it is ensured that the reconstructed variable thermal topology has no connection conflicts in both the first and second states, providing an interference-free structural guarantee for the adaptive adjustment of the internal temperature rise of the explosion-proof control box.

[0050] Furthermore, step A340 in the method provided in this application embodiment includes: A341: Detect the relative path distance between adjacent thermally induced thermal bridges in the variable thermal topology. If the relative path distance is less than a preset safe relative distance, determine that there is a connection conflict and return the connection conflict result.

[0051] A342: The returned conflict results include thermally induced thermal bridge conflict pairs, conflict locations, and conflict distances.

[0052] Specifically, in a variable thermal conductivity topology, multiple thermally induced thermal bridges are distributed inside the explosion-proof control box. When the path distance between adjacent thermally induced thermal bridges is too close, local overheating can easily occur due to heat concentration during conduction, or mutual interference can occur due to structural deformation, affecting heat dissipation efficiency and equipment operational stability. First, all adjacent thermally induced thermal bridge pairs in the topology must be identified. For example, thermally induced thermal bridge A corresponding to the contactor is adjacent to thermally induced thermal bridge B corresponding to the relay, and thermal bridge B is adjacent to thermally induced thermal bridge C corresponding to the circuit breaker, forming two pairs of adjacent thermal bridge combinations.

[0053] Subsequently, the relative path distance between adjacent thermally induced thermal bridges was measured, with the centerline of the path when the thermally induced thermal bridge was in a thermally triggered conductive state as the reference, i.e., the axis of the thermally conductive path formed by the contact between the first and second thermally conductive blocks. A high-precision distance measuring tool was used to measure the centerline distance between each pair of adjacent thermal bridges. For example, the centerline distance between thermal bridges A and B was measured to be 8 mm, and the centerline distance between thermal bridges B and C was 12 mm.

[0054] Next, those skilled in the art, in conjunction with the internal space dimensions of the explosion-proof control box, the deformation range of the thermally induced thermal bridge (such as the maximum elongation of the shape memory alloy), and the heat diffusion range during heat dissipation, set a preset safe relative distance. Assuming that the preset safe relative distance in the above example is 10mm, this distance ensures that the heat diffusion area does not overlap when adjacent thermal bridges are connected, and that there is no physical interference during the structural deformation process.

[0055] Finally, the measured relative path distance is compared with the preset safe relative distance. The 8mm distance between thermal bridges A and B is less than 10mm, indicating a connection conflict. The 12mm distance between thermal bridges B and C is greater than 10mm, indicating no conflict. For cases where a conflict exists, the specific connection conflict result is returned, including the conflicting pair being thermal bridges A and B, the conflict location being in the left-hand area of ​​the middle layer of the explosion-proof control box, and the conflict distance being 8mm.

[0056] By measuring the relative path distance between adjacent thermally induced heat bridges and comparing it with a preset safe distance, connection conflicts in the topology can be accurately identified, providing clear conflict information for optimizing the layout of heat bridges to avoid heat interference and structural interference.

[0057] Furthermore, step A200 in the method provided in this application embodiment includes: A210: The thermo-deformation material of each of the plurality of thermo-induced thermal bridges includes shape memory alloys.

[0058] In this embodiment, shape memory alloy is an alloy material with shape memory effect, which undergoes a reversible transformation of its crystal structure under specific temperature conditions, thereby producing recoverable deformation. When the temperature is below a certain critical value, it maintains a certain initial shape; when the temperature rises above the critical value, it automatically recovers to another preset shape; and when the temperature drops, it returns to its initial shape.

[0059] Specifically, in explosion-proof control boxes of power distribution or power supply equipment, thermally induced thermal bridges need to switch between conductive states through temperature changes. Shape memory alloys, with their unique thermotropic deformation properties, have become the core material to meet this requirement. Shape memory alloys undergo crystal structure transformation at specific temperatures, thereby producing recoverable deformation.

[0060] When this material is used in the thermally induced thermal bridge, the alloy is in its initial state at room temperature or when the heat source temperature has not reached the preset threshold. At this time, the first and second heat-conducting blocks of the thermally induced thermal bridge are separated, and no heat conduction path is formed. When the real-time temperature rise of the heat source exceeds the preset threshold, heat is transferred to the shape memory alloy of the thermally induced thermal bridge. The alloy deforms due to the temperature rise, pushing the first and second heat-conducting blocks into contact, making the thermally induced thermal bridge conductive, establishing a heat conduction path between the heat source and the external heat dissipation module, and realizing heat transfer. When the heat source temperature drops below the threshold, the alloy returns to its initial state, the first and second heat-conducting blocks separate, and the thermal bridge returns to the non-conductive state.

[0061] The material properties of shape memory alloys ensure that thermally induced thermal bridges can accurately respond to changes in heat source temperature, providing a reliable physical basis for adaptive adjustment of temperature rise inside the explosion-proof control box. This satisfies the needs of dynamic heat conduction and adapts to the stability requirements of components in the explosion-proof environment.

[0062] Furthermore, step A300 in the method provided in this application embodiment includes: A381: When the real-time temperature rise of any of the plurality of heat sources exceeds the corresponding preset temperature rise threshold, the thermally induced thermal bridge corresponding to the abnormal heat source undergoes thermal deformation, thereby establishing a thermally conductive connection path between the first thermally conductive block and the second thermally conductive block.

[0063] A382: The heat from the abnormal heat source is transferred to the external heat dissipation module according to the heat conduction connection path.

[0064] In one embodiment, during the internal temperature rise regulation process of the explosion-proof control box, the real-time temperature of each heat source needs to be continuously monitored. A high-precision temperature sensor installed inside the box collects temperature data from devices such as contactors, relays, and circuit breakers at a frequency of once per second, and calculates the temperature rise of each device in real time. For example, the preset temperature rise threshold for contactors is 55°C, and for relays it is 50°C. These thresholds are determined based on the upper temperature limit for safe operation of the equipment and the temperature rise rate characteristics, ensuring that heat dissipation is initiated in time before the temperature approaches a dangerous value.

[0065] When the real-time temperature rise of any heat source exceeds the corresponding preset threshold, such as when the contactor's temperature rises from 50°C to 56°C within 2 minutes due to increased load during operation, and the real-time temperature rise of 56°C is greater than the preset threshold of 55°C, the thermally induced thermal bridge corresponding to the abnormal heat source will immediately respond. The shape memory alloy within the thermally induced thermal bridge serves as the core triggering component. When the temperature reaches 55°C, it begins to undergo thermal deformation. As the temperature rises, the alloy's crystal structure changes, gradually elongating from its contracted state at room temperature. When the temperature reaches 56°C, the alloy has elongated by 6mm, precisely pushing the first and second heat-conducting blocks of the thermally induced thermal bridge into close contact.

[0066] The first heat-conducting block is bonded to the heat source surface with a highly thermally conductive adhesive, which can efficiently absorb the heat generated by the heat source. At this time, through the contact of the second heat-conducting block, the heat can form a continuous thermal conduction path along the conductive thermal bridge. The first heat-conducting block is made of copper with a thermal conductivity of 401 W / (m·K), and the second heat-conducting block is made of aluminum with a thermal conductivity of 237 W / (m·K). After the two come into contact, the overall thermal resistance of the thermal conduction path drops to below 0.02 K / W, ensuring rapid heat transfer.

[0067] Heat is transferred to the finned heat dissipation module outside the enclosure via a second heat-conducting block. This module accelerates heat dissipation by increasing the contact area with the outside air; the fin spacing is set to 8mm, achieving a heat dissipation area of ​​0.5m. When the heat from the contactor is transferred to the heat dissipation module through the heat conduction path, the heat dissipation module can reduce the contactor temperature at a rate of 3°C per minute under natural convection conditions. After about 3 minutes, the contactor temperature drops to 52°C, which is below the preset threshold. The shape memory alloy of the thermally induced thermal bridge gradually shrinks as the temperature decreases, and the first and second heat conduction blocks separate, breaking the heat conduction path.

[0068] By real-time monitoring of the heat source temperature rise triggering the deformation and conduction of the thermally conductive bridge, and relying on the pathway constructed by the high thermal conductivity material, heat is efficiently transferred to the external heat dissipation module, realizing timely heat dissipation of abnormal heat sources and ensuring precise adaptive adjustment of the internal temperature rise of the explosion-proof control box.

[0069] Furthermore, step A100 in the method provided in this application embodiment includes: A110: Perform temperature monitoring on the equipment in the explosion-proof control box and output a set of equipment temperature monitoring samples, which includes historical temperature change data of each device.

[0070] A120: Analyze the temperature rise change curves of the temperature monitoring sample set of the equipment, output the temperature rise rate, temperature rise value and duration of each equipment, and calculate the heat source contribution index.

[0071] A130: Extract the k devices whose heat source contribution index is greater than the preset heat source contribution index and mark them as multiple heat sources.

[0072] Optionally, firstly, continuous temperature monitoring is performed on all equipment inside the explosion-proof control box. Temperature sensors are installed at the locations of relays, contactors, circuit breakers, and other equipment inside the box, and temperature data is recorded every 5 minutes for 72 hours. This process collects temperature change records of each device at different operating stages, forming a sample set of equipment temperature monitoring data containing historical temperature data.

[0073] Based on the aforementioned temperature monitoring sample set, temperature rise curves were plotted for each device within the explosion-proof control box, and key parameters were extracted through curve analysis. Taking a relay as an example, its curve shows that within 10 minutes of startup, the temperature rises from 35℃ to 55℃, with a temperature rise rate of (55-35)℃ / 10 minutes = 2℃ / minute, a temperature rise value of 55-35 = 20℃, and a sustained temperature rise time of 10 minutes. Another contactor, within 30 minutes of operation, sees its temperature rise from 40℃ to 70℃, with a temperature rise rate of 1℃ / minute, a temperature rise value of 30℃, and a duration of 30 minutes. These parameters directly reflect the heat intensity and duration of the equipment.

[0074] Then, when calculating the heat source contribution index of each device by combining the extracted temperature rise rate, temperature rise value, and duration, the three indicators can be weighted according to percentages, and the sum of the weights is 1. The weight corresponding to the indicator is determined by those skilled in the art by comprehensively considering the impact of the three on the heat dissipation pressure inside the box. For example, the temperature rise rate is set to account for 40%, the temperature rise value for 40%, and the duration for 20%, with the total proportion of the three being 100%.

[0075] Taking a certain relay as an example, its temperature rise rate is 2℃ / minute, the temperature rise value is 20℃, and the duration is 10 minutes. Calculated according to the above proportions, its heat source contribution index is 2×40%+20×40%+10×20%=0.8+8+2=10.8. Another contactor has a temperature rise rate of 1℃ / minute, a temperature rise value of 30℃, and a duration of 30 minutes. Its heat source contribution index is 1×40%+30×40%+30×20%=0.4+12+6=18.4.

[0076] Subsequently, a preset heat source contribution index was set to 10. This preset heat source contribution index was determined by those skilled in the art based on historical temperature monitoring data of each device within the explosion-proof control box, combined with the temperature rise threshold for safe operation of the equipment, the load-bearing capacity of the heat dissipation system, and the heating characteristics of different devices. This analysis examined the range of key heat source contribution values ​​affecting equipment stability during past operation and comprehensively determined the critical value, thereby effectively distinguishing between primary heat sources that significantly affect the temperature rise within the box and secondary heat sources with less impact. Next, the indices of all devices were sorted. If k is 2, then contactors and relays with indices of 18.4 and 10.8 were selected and marked as multiple heat sources within the explosion-proof control box.

[0077] By continuously monitoring temperature to form a sample set, analyzing curves to extract key parameters, and calculating and screening heat source contribution indicators, the main heat sources inside the explosion-proof control box are accurately identified, providing a clear and reliable basis for subsequent dynamic heat dissipation adjustment of each heat source.

[0078] Furthermore, step A300 in the method provided in this application embodiment includes: A391: Differentiate the temperature rise curve of the temperature monitoring sample set of the equipment to obtain the temperature rise derivative curve.

[0079] A392: Extract the temperature rise peak value from the temperature rise derivative change curve to determine the preset temperature rise threshold for each device, and output multiple preset temperature rise thresholds.

[0080] In this embodiment, the temperature rise curve is plotted based on a temperature monitoring sample set of the equipment inside the explosion-proof control box, reflecting the increase in equipment temperature over time. With time on the horizontal axis and temperature on the vertical axis, it visually displays the temperature change trend of the equipment from its initial temperature to different operating stages. Key parameters such as the temperature rise rate, temperature rise value, and duration can be extracted from the curve features, providing a visual basis for analyzing the equipment's heat dissipation characteristics. The preset temperature rise threshold is a critical temperature value determined by extracting the peak value of the temperature rise derivative curve based on derivative analysis of the equipment's temperature rise curve. It is preset according to the upper limit of the safe operating temperature of the equipment, the heat generation intensity, and the heat dissipation requirements. When the real-time temperature rise of the equipment exceeds this threshold, the corresponding thermally induced thermal bridge will be triggered to achieve heat dissipation.

[0081] In one embodiment, when setting preset temperature rise thresholds for multiple thermally induced thermal bridges, it is necessary to ensure that the thresholds accurately match the heat dissipation requirements based on the actual heat generation characteristics of each device within the explosion-proof control box, using a data-driven approach. First, based on the equipment temperature monitoring sample set established in step A110, this sample set contains historical temperature change data for devices such as contactors, relays, and circuit breakers. For example, a contactor records its temperature every 5 minutes during continuous operation, forming a temperature rise curve from an initial 30°C to 65°C, while a relay forms a curve from 28°C to 58°C. These curves visually reflect the temperature fluctuation patterns of the equipment over time.

[0082] Based on the above temperature rise curve, the derivative is calculated, and the result is the temperature rise derivative curve. The value of this curve represents the rate of temperature rise of the equipment at different times. In actual engineering, the temperature rise curve is usually plotted based on discrete temperature monitoring data, which are collected at specific time intervals, such as once per minute, and are not continuous functions. Therefore, when differentiating the temperature rise curve, it is not possible to directly use the definition of the derivative of a continuous function. Instead, the finite difference method is used for approximation. The average temperature rise rate within that time period is obtained by dividing the temperature difference between two adjacent time points by the time interval, and this approximates the derivative of the corresponding interval. An example of the derivative calculation for the contactor temperature rise curve is shown in Table 1.

[0083] By using differential calculations across multiple consecutive time periods, a temperature rise derivative variation curve composed of a series of approximate derivatives can be obtained. Each value in the curve corresponds to the average temperature rise rate over a certain time period, reflecting the overall trend of the equipment's temperature rise rate over time. This differential calculation method based on discrete data can effectively capture the changing characteristics of the temperature rise rate in engineering monitoring, providing a reliable basis for extracting temperature rise peaks and determining preset temperature rise thresholds.

[0084] Finally, the peak temperature in the temperature rise derivative curve is extracted. The temperature point corresponding to this peak is the critical node where the equipment's temperature rise rate is fastest. If heat dissipation is not timely after exceeding this node, the temperature may rapidly exceed the safe range. Combining this with the maximum allowable temperature for safe operation of the equipment (e.g., 65℃ for contactors and 58℃ for relays), the temperature corresponding to the peak temperature of the contactor's derivative (55℃) is determined as its preset temperature rise threshold, and the temperature corresponding to the peak temperature of the relay's derivative (50℃) is determined as its preset threshold. After the same treatment, the threshold for the circuit breaker is set at 52℃. These preset temperature rise thresholds avoid the gradual temperature rise phase during normal equipment operation and can trigger thermally induced thermal bridges in time before the temperature rise accelerates.

[0085] By analyzing the temperature rise curves of historical temperature data of the equipment, the temperature point corresponding to the peak temperature rise rate is accurately extracted as a preset threshold, providing a scientific basis for the thermal triggering timing of each thermally induced thermal bridge, ensuring that the heat dissipation adjustment response is timely and adapted to the actual heat generation characteristics of the equipment.

[0086] Table 1: Parameter Table for Temperature Rise Curve Time period initial temperature End temperature Time interval Temperature difference Rate of temperature rise (approximate derivative) 0-10 minutes 30℃ 40℃ 10 minutes 10℃ 1℃ / minute 10-20 minutes 40℃ 55℃ 10 minutes 15℃ 1.5℃ / minute In summary, the adaptive temperature rise adjustment method for the internal temperature rise of an explosion-proof control box provided in this application has the following technical effects: This application identifies multiple heat sources within an explosion-proof control box and establishes multiple thermally induced thermal bridges connecting these heat sources to the external heat dissipation module. These thermally induced thermal bridges construct a variable thermal conductivity topology and set a preset temperature rise threshold. When the real-time temperature rise of any heat source exceeds the corresponding threshold, its corresponding thermally induced thermal bridge is thermally triggered to transfer heat. When at least two heat sources exceed the temperature, relevant parameters are collected to calculate the thermal response priority, and the corresponding thermally induced thermal bridges are sequentially controlled to conduct. This achieves adaptive adjustment of the internal temperature rise of the explosion-proof control box, making the heat dissipation regulation of the explosion-proof control box more precise and reliable. It achieves the technical effect of adaptive adjustment of the internal temperature rise of the explosion-proof control box in power distribution or power supply electrical equipment, improving heat dissipation efficiency, avoiding local overheating, and accurately controlling the internal temperature rise.

[0087] Example 2, as Figure 2 As shown, based on the same inventive concept as in Embodiment 1 above, this application provides an internal temperature rise adaptive adjustment system for an explosion-proof control box, the system comprising: Explosion-proof control box heat source identification module 1, which is used to identify multiple heat sources inside the explosion-proof control box.

[0088] Connection building module 2 is used to establish multiple thermally induced thermal bridges connecting the multiple heat sources and the external heat dissipation module. One end of each thermally induced thermal bridge is connected to each heat source location through a first thermally conductive block, and the other end is connected to the external heat dissipation module through a second thermally conductive block via a thermal triggering method.

[0089] The variable thermal conductivity topology construction module 3 is used to construct a variable thermal conductivity topology from the plurality of thermally induced thermal bridges, and to set a plurality of preset temperature rise thresholds for the plurality of thermally induced thermal bridges. When the real-time temperature rise of any of the plurality of heat sources is greater than the corresponding preset temperature rise threshold, the thermally induced thermal bridge corresponding to the abnormal heat source is thermally triggered to conduct, so as to transfer heat to the abnormal heat source.

[0090] Furthermore, the variable thermal conductivity topology construction module 3 is used to perform the following steps: When the real-time temperature rise of at least two heat sources exceeds the corresponding preset temperature rise threshold, the temperature rise rate, the importance of the heat source location, and the power density of the at least two heat sources are collected; priority calculation is performed on the temperature rise rate, the importance of the heat source location, and the power density of the at least two heat sources to obtain the thermal response priority of the at least two heat sources; and the thermally triggered conduction of the thermally induced thermal bridges corresponding to the at least two heat sources is controlled sequentially according to the thermal response priority.

[0091] Furthermore, the variable thermal conductivity topology construction module 3 is used to perform the following steps: The connection conflict return results of the variable thermal conductivity topology in the first state and the connection conflict return results of the variable thermal conductivity topology in the second state are detected. The first state is when multiple thermally induced thermal bridges are in a non-thermally triggered conducting state, and the second state is when multiple thermally induced thermal bridges are in a thermally triggered conducting state. When the connection conflict return results in the first state and the connection conflict return results in the second state are both empty, the variable thermal conductivity topology is output by the current line of the multiple thermally induced thermal bridges.

[0092] Furthermore, the variable thermal conductivity topology construction module 3 is used to perform the following steps: When at least one of the connection conflict return results in the first state and the connection conflict return results in the second state is not empty, a thermally induced thermal bridge conflict pair is identified; multiple thermally induced thermal bridges are reconstructed by optimizing the connection paths of the thermally induced thermal bridge conflict pair, and the variable thermal topology is updated.

[0093] Furthermore, the variable thermal conductivity topology construction module 3 is used to perform the following steps: The relative path distance between adjacent thermally induced thermal bridges in the variable thermally conductive topology is detected. If the relative path distance is less than a preset safe relative distance, a connection conflict is determined, and a connection conflict result is returned. The returned conflict result includes the thermally induced thermal bridge conflict pair, the conflict location, and the conflict distance.

[0094] Furthermore, the connection building module 2 is used to perform the following steps: The thermo-deformation material of each of the plurality of thermo-induced thermal bridges includes shape memory alloys.

[0095] Furthermore, the variable thermal conductivity topology construction module 3 is used to perform the following steps: When the real-time temperature rise of any of the plurality of heat sources exceeds the corresponding preset temperature rise threshold, the thermally induced thermal bridge corresponding to the abnormal heat source undergoes thermal deformation, thereby establishing a thermally conductive connection path between the first thermally conductive block and the second thermally conductive block; the heat from the abnormal heat source is transferred to the external heat dissipation module according to the thermally conductive connection path.

[0096] Furthermore, the explosion-proof control box heat source identification module 1 is used to perform the following steps: Temperature monitoring is performed on the equipment in the explosion-proof control box, and a temperature monitoring sample set is output, which includes historical temperature change data of each device. Temperature rise change curve analysis is performed on the temperature monitoring sample set, and the temperature rise rate, temperature rise value and duration of each device are output. Heat source contribution index is calculated. The top k devices with heat source contribution index greater than the preset heat source contribution index are extracted and marked as multiple heat sources.

[0097] Furthermore, the variable thermal conductivity topology construction module 3 is used to perform the following steps: The temperature rise change curve of the temperature monitoring sample set of the equipment is differentiated to obtain the temperature rise derivative change curve; the temperature rise peak value of the temperature rise derivative change curve is extracted to determine the preset temperature rise threshold of each equipment, and multiple preset temperature rise thresholds are output.

[0098] The internal temperature rise adaptive adjustment system for explosion-proof control boxes provided in this embodiment of the invention can execute the internal temperature rise adaptive adjustment method for explosion-proof control boxes provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0099] Although this application makes various references to certain modules in the system according to the embodiments of this application, any number of different modules can be used and run on user terminals and / or servers. The various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of each functional unit are only for easy distinction between each other and are not used to limit the scope of protection of this invention.

[0100] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application. In some cases, the actions or steps described in this application can be performed in a different order than that shown in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. A method for adaptive adjustment of internal temperature rise in explosion-proof control boxes, characterized in that, The method includes: Identify multiple heat sources inside the explosion-proof control box; Multiple thermally induced thermal bridges are established to connect the multiple heat sources and the external heat dissipation module. One end of each thermally induced thermal bridge is connected to each heat source location through a first thermally conductive block, and the other end is connected to the external heat dissipation module through a second thermally conductive block via a thermal triggering method. A variable thermal conductivity topology is constructed by the plurality of thermally induced thermal bridges, and a plurality of preset temperature rise thresholds are set for the plurality of thermally induced thermal bridges. When the real-time temperature rise of any of the plurality of heat sources is greater than the corresponding preset temperature rise threshold, the thermally induced thermal bridge corresponding to the abnormal heat source is thermally triggered to conduct, so as to transfer heat to the abnormal heat source.

2. The method as described in claim 1, characterized in that, When the real-time temperature rise of any of the plurality of heat sources exceeds a corresponding preset temperature rise threshold, the method further includes: When the real-time temperature rise of at least two heat sources is greater than the corresponding preset temperature rise threshold, the temperature rise rate, the importance of the heat source location, and the power density of the at least two heat sources are collected. Priority calculations are performed on the temperature rise rate, location importance, and power density of the at least two heat sources to obtain the thermal response priority of the at least two heat sources; According to the thermal response priority, the thermally triggered thermal bridges corresponding to the at least two heat sources are controlled to conduct thermally in sequence.

3. The method as described in claim 1, characterized in that, The method for constructing a variable thermal conductivity topology from the plurality of thermally induced thermal bridges includes: The connection conflict return result of the variable thermal conductivity topology in the first state and the connection conflict return result of the variable thermal conductivity topology in the second state are detected. In the first state, all thermally induced thermal bridges are in a non-thermally triggered conducting state, and in the second state, all thermally induced thermal bridges are in a thermally triggered conducting state. When both the connection conflict return result in the first state and the connection conflict return result in the second state are empty, the variable thermal topology is output by the current line of the plurality of thermally induced thermal bridges.

4. The method as described in claim 3, characterized in that, When at least one of the connection conflict return results in the first state and the connection conflict return results in the second state is not empty, a thermally induced thermal bridge conflict pair is determined. Multiple thermally induced thermal bridges are reconstructed by optimizing the connection paths of the thermally induced thermal bridge conflict pairs, thus updating the variable thermal topology.

5. The method as described in claim 3, characterized in that, The relative path distance between adjacent thermally induced thermal bridges in the variable thermal topology is detected. If the relative path distance is less than a preset safe relative distance, a connection conflict is determined, and a connection conflict result is returned. The returned conflict results include thermally induced thermal bridge conflict pairs, conflict locations, and conflict distances.

6. The method as described in claim 1, characterized in that, The thermo-deformation material of each of the plurality of thermo-induced thermal bridges includes shape memory alloys.

7. The method as described in claim 2, characterized in that, When the real-time temperature rise of any of the plurality of heat sources exceeds the corresponding preset temperature rise threshold, the thermally induced thermal bridge corresponding to the abnormal heat source undergoes thermal deformation, thereby establishing a thermally conductive connection path between the first thermally conductive block and the second thermally conductive block. The heat from the abnormal heat source is transferred to the external heat dissipation module according to the heat conduction connection path.

8. The method as described in claim 1, characterized in that, Methods for identifying multiple heat sources inside an explosion-proof control box include: Temperature monitoring is performed on the equipment in the explosion-proof control box, and a temperature monitoring sample set of the equipment is output, which includes historical temperature change data of each device. The temperature rise change curve of the temperature monitoring sample set of the equipment is analyzed, and the temperature rise rate, temperature rise value and duration of each equipment are output. The heat source contribution index is calculated. The top k devices whose heat source contribution index is greater than the preset heat source contribution index are identified as multiple heat sources.

9. The method as described in claim 8, characterized in that, The method for setting multiple preset temperature rise thresholds for the plurality of thermally induced thermal bridges includes: The temperature rise variation curve of the temperature monitoring sample set of the equipment is differentiated to obtain the temperature rise derivative variation curve; Extract the temperature rise peak value from the temperature rise derivative change curve to determine the preset temperature rise threshold for each device, and output multiple preset temperature rise thresholds.

10. An internal temperature rise adaptive adjustment system for an explosion-proof control box, characterized in that, For implementing the internal temperature rise adaptive adjustment method for an explosion-proof control box according to any one of claims 1-9, the system comprises: The explosion-proof control box heat source identification module is used to identify multiple heat sources inside the explosion-proof control box. The connection construction module is used to establish multiple thermally induced thermal bridges connecting the multiple heat sources and the external heat dissipation module. One end of each thermally induced thermal bridge is connected to each heat source location through a first thermally conductive block, and the other end is connected to the external heat dissipation module through a second thermally conductive block via a thermal triggering method. A variable thermal conductivity topology construction module is used to construct a variable thermal conductivity topology from the plurality of thermally induced thermal bridges, and to set multiple preset temperature rise thresholds for the plurality of thermally induced thermal bridges. When the real-time temperature rise of any of the plurality of heat sources exceeds the corresponding preset temperature rise threshold, the thermally induced thermal bridge corresponding to the abnormal heat source is thermally triggered to conduct, so as to transfer heat to the abnormal heat source.

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