Dual-motor coupling cooling control system for mining explosion-proof vehicle

Abstract

The invention relates to a dual-motor coupling cooling control system for a mining explosion-proof vehicle, and relates to the technical field of intelligent cooling control. According to the temperature signal, the rotating speed of a water pump explosion-proof motor of the circulating water pump is self-adaptively adjusted to drive the circulating water pump to obtain the corresponding water pump flow; adjusting the flow of cooling liquid flowing into a heating component in the cooling module according to the temperature signal and the flow of the water pump; according to the temperature signal, the rotating speed of a hydraulic pump explosion-proof motor of the hydraulic pump is adjusted in a self-adaptive mode, the motor is driven to adjust the rotating speed of a fan, so that the cooling intensity of the radiator is adjusted, and a heating component works within the preset temperature range. The technical scheme is adopted, the heat dissipation requirement of the mining explosion-proof vehicle during long-time high-load operation is met, and the service life of the mining explosion-proof vehicle is prolonged. Therefore, heat can be effectively cooled in time, the performance and reliability of the battery, the motor and the frequency converter are guaranteed, and normal operation of the whole new energy vehicle is guaranteed.

Description

Technical Field

[0001] This application relates to the field of intelligent cooling control technology, specifically to a dual-motor coupled cooling control system for explosion-proof mining vehicles. Background Technology

[0002] With the development of trackless auxiliary transportation technology and equipment in coal mines, more stringent requirements have been placed on the performance and environmental characteristics of underground transport vehicles. Against this backdrop, new energy vehicles, with their significant advantages such as energy saving, environmental protection, low noise, high safety, and diversified energy sources, have shown enormous application potential in the field of underground coal mine transportation. Developing green, pollution-free, explosion-proof new energy vehicles has become one of the important trends in the development of underground coal mine vehicles.

[0003] For new energy vehicles, the battery, motor, and inverter are the three core components, and their performance directly affects the overall operation of the vehicle. However, in actual operation, the battery, motor, and inverter generate a large amount of heat, which reduces battery safety, increases the risk of failure or even explosion, shortens battery cycle life, accelerates the aging of insulation materials in the motor and inverter, increases the probability of electrical faults and fire accidents, exacerbates the wear of mechanical parts such as bearings and gears inside the motor and inverter, and shortens the life of electronic components.

[0004] Currently, the industry mainly employs cooling methods for explosion-proof mining vehicles, including ventilation cooling, phase change material cooling, liquid cooling, thermoelectric cooling, and refrigeration system cooling. However, these existing cooling methods cannot meet the heat dissipation requirements of explosion-proof mining vehicles during prolonged high-load operation in practical applications. This results in heat not being cooled in a timely and effective manner, severely affecting the performance and reliability of batteries, motors, and frequency converters, and consequently impacting the normal operation of the entire new energy vehicle. Summary of the Invention

[0005] In view of this, this application provides a dual-motor coupled cooling control system for explosion-proof mining vehicles. The main purpose is to solve the technical problem that existing cooling methods cannot meet the heat dissipation requirements of explosion-proof mining vehicles during long-term high-load operation in practical applications, resulting in the inability to cool heat in a timely and effective manner, which seriously affects the performance and reliability of batteries, motors and frequency converters, and thus affects the normal operation of the entire new energy vehicle.

[0006] In a first aspect, this application provides a dual-motor coupled cooling control system for explosion-proof mining vehicles, including: a hydraulic pump, a motor, a fan, a radiator, a circulating water pump, an explosion-proof motor for the water pump, an explosion-proof motor for the hydraulic pump, a controller, a cooling module, and a temperature sensor. The controller is configured to: Receive the temperature signal from the temperature sensor; Based on the temperature signal, the speed of the explosion-proof motor of the circulating water pump is adaptively adjusted to drive the circulating water pump to obtain the corresponding water flow rate. The flow rate of coolant flowing into the heat-generating components in the cooling module is adjusted according to the temperature signal and the water pump flow rate. Based on the temperature signal, the speed of the explosion-proof motor of the hydraulic pump is adaptively adjusted, which drives the motor to adjust the speed of the fan, thereby adjusting the cooling intensity of the radiator and keeping the heat-generating component operating within a preset temperature range.

[0007] By employing the above technical solution, this application provides a dual-motor coupled cooling control system for explosion-proof mining vehicles. Compared with existing technologies, this application utilizes a hydraulic pump, motor, fan, radiator, circulating water pump, explosion-proof water pump motor, explosion-proof hydraulic pump motor, controller, cooling module, and temperature sensor. The controller is configured to: receive the temperature signal from the temperature sensor; adaptively adjust the speed of the explosion-proof water pump motor of the circulating water pump according to the temperature signal to drive the circulating water pump to obtain a corresponding water flow rate; adjust the coolant flow rate into the heat-generating components in the cooling module according to the temperature signal and the water flow rate; and adaptively adjust the speed of the explosion-proof hydraulic pump motor of the hydraulic pump according to the temperature signal, thereby driving the motor to adjust the speed of the fan to adjust the cooling intensity of the radiator, so that the heat-generating components operate within a preset temperature range.

[0008] By employing the above technical solution, this application automatically increases the water pump speed and coolant circulation flow when a high load is detected causing a temperature rise. This on-demand supply method ensures that sufficient coolant flows through the heat source when high heat is generated, promptly removing heat and preventing heat accumulation. This application not only controls the total flow rate but also precisely allocates the flow rate to each heat-generating component based on the temperature signal. This ensures that the components most in need of cooling receive priority flow, allowing all critical components to operate within their optimal temperature range. This meets the heat dissipation requirements of mining explosion-proof vehicles during prolonged high-load operation, ensuring timely and effective cooling of heat and guaranteeing the performance and reliability of the battery, motor, and inverter.

[0009] This application employs a hydraulic transmission scheme where a hydraulic pump and explosion-proof motor drive a motor to adjust the fan speed. By adaptively adjusting the speed of the hydraulic pump and explosion-proof motor based on the temperature signal, the system can control the fan speed, thereby adjusting the cooling intensity of the radiator. When the temperature is too high, the fan speed increases to enhance air convection and improve the heat exchange efficiency of the radiator; conversely, the speed decreases. This adaptive adjustment ensures that the radiator always has sufficient cooling capacity to cope with the heat generated under high loads.

[0010] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This application provides a schematic diagram of the structure of a dual-motor coupled cooling control system for an explosion-proof mining vehicle. Figure 1 middle: 1-Hydraulic pump; 2-Motor; 3-Fan; 4-Merging valve; 5-Radiator; 6-Circulating water pump; 7.1-Explosion-proof motor for water pump; 7.2-Explosion-proof motor for hydraulic pump; 8-Controller; 9.1-Water temperature sensor; 9.2-Motor temperature sensor; 10-Diverter valve; 11.1-Explosion-proof electrically controlled speed control valve; 11.2-Explosion-proof electrically controlled speed control valve; 11.3-Explosion-proof electrically controlled speed control valve; 11.4-Explosion-proof electrically controlled speed control valve; 11.5-Explosion-proof electrically controlled speed control valve; 11.6-Explosion-proof electrically controlled speed control valve; 11. 7-Explosion-proof electronic speed control valve; 12-Cooling module; 12.1-Left, middle, and rear motors; 12.2-Left, middle, and front motors; 12.3-Right, middle, and rear motors; 12.4-Right, middle, and front motors; 12.5-Right front motor; 12.6-Left front motor; 12.7-Oil pump motor; 12.8-Inverter 1; 12.9-Inverter 2; 13.1-Stop valve; 13.2-Stop valve; 13.3-Stop valve; 13.4-Stop valve; 13.5-Stop valve; 13.6-Stop valve; 13.7-Stop valve. Detailed Implementation

[0014] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0016] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0017] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] To address the technical problem that existing cooling methods cannot meet the heat dissipation requirements of mining explosion-proof vehicles during prolonged high-load operation, resulting in ineffective and timely cooling of heat, which severely affects the performance and reliability of batteries, motors, and frequency converters, and consequently impacts the normal operation of the entire new energy vehicle, this application provides a dual-motor coupled cooling control system for mining explosion-proof vehicles.

[0019] like Figure 1 As shown, the dual-motor coupled cooling control system for explosion-proof mining vehicles can achieve adaptive distribution of cooling flow and precise adjustment of heat dissipation intensity through intelligent control strategies, ensuring that each heat-generating component always operates within the preset optimal temperature range, while effectively reducing system power consumption and extending the vehicle's driving range.

[0020] Specifically, the dual-motor coupled cooling control system for the explosion-proof mining vehicle mainly includes: a hydraulic pump 1, a motor 2, a fan 3, a confluence valve 4, a radiator 5, a circulating water pump 6, an explosion-proof water pump motor 7.1, an explosion-proof hydraulic pump motor 7.2, a controller 8, a temperature sensor, a diversion valve 10, multiple explosion-proof electronically controlled speed control valves (11.1~11.7), multiple shut-off valves (13.1~13.7), and a cooling module 12.

[0021] The cooling module 12 may include key components that generate heat during vehicle operation, specifically including: left-center-rear motor 12.1, left-center-front motor 12.2, right-center-rear motor 12.3, right-center-front motor 12.4, right-front motor 12.5, left-front motor 12.6, oil pump motor 12.7, inverter 1 (12.8), inverter 2 (12.9), and battery (not shown in the figure). The aforementioned motors, inverters, and battery are collectively referred to as heat-generating components.

[0022] Temperature sensors can be installed in the system to monitor temperature. Specifically, they may include a water temperature sensor 9.1 for detecting the temperature of the coolant circuit and a motor temperature sensor 9.2 for directly detecting the temperature of various heat-generating components (such as the motor stator, battery pack, etc.).

[0023] The controller 8, as the core control unit of the system, has its signal input terminal electrically connected to the water temperature sensor 9.1 and the motor temperature sensor 9.2, which can be used to collect water temperature signals and temperature signals of each heating component in real time; its control output terminal is electrically connected to the explosion-proof motor of the water pump 7.1, the explosion-proof motor of the hydraulic pump 7.2, and each explosion-proof electrically controlled speed regulating valve 11.1~11.7 respectively.

[0024] In the coolant circulation loop, the circulating water pump 6 is driven by the explosion-proof motor 7.1 to provide power for coolant circulation. After being pressurized by the circulating water pump 6, the coolant is output and first flows through the diversion valve 10. The diversion valve 10 is configured to preset different diversion ratios according to the cooling flow requirements of each heat-generating component (such as each motor and frequency converter) in the cooling module 12, aiming to meet the flow requirements of all heat-generating components under different operating conditions, and ensuring that while supplying flow on demand, it can also guarantee the maximum cooling flow requirements of key components such as motors under maximum load.

[0025] The outlet end of the diversion valve 10 is connected to multiple parallel cooling branches, and each cooling branch is equipped with a shut-off valve (one of 13.1 to 13.7) and an explosion-proof electronic speed control valve (one of 11.1 to 11.7) connected in series.

[0026] Specifically, the explosion-proof electrically controlled speed control valve 11.1 and the shut-off valve 13.1 are connected in series with the cooling flow path of the left, middle and rear motors 12.1; the explosion-proof electrically controlled speed control valve 11.2 and the shut-off valve 13.2 are connected in series with the cooling flow path of the left, middle and front motors 12.2; and so on. The explosion-proof electrically controlled speed control valves 11.3, 11.4, 11.5, 11.6 and 11.7 respectively control the right, middle and rear motors 12.3, right, middle and front motors 12.4, right front motors 12.5, left front motors 12.6 and oil pump motors 12.7. The frequency converters 1 (12.8) and 2 (12.9) are also connected to the corresponding cooling branches (the speed control valves and shut-off valves can be shared or configured independently).

[0027] After absorbing heat from the heat-generating components, the coolant from each cooling branch flows into the confluence valve 4. The high-temperature coolant, collected by the confluence valve 4, then enters the radiator 5 for heat exchange. The cooling system employs a hydraulically driven air-cooling method. The hydraulic pump 1 is driven by an explosion-proof motor 7.2. The pressure oil output from the hydraulic pump 1 drives the motor 2 to rotate, which in turn drives the fan 3 to rotate. The cool air generated by the fan 3 flows through the radiator 5, carrying away the heat from the coolant inside. The cooled coolant then flows back to the coolant tank (not shown in the figure), completing one cooling cycle.

[0028] The control logic in this embodiment is as follows: The controller 8 is configured to receive temperature signals from temperature sensors, including water temperature signals detected by water temperature sensor 9.1 and motor temperature signals detected by motor temperature sensor 9.2.

[0029] Based on the water temperature signal from water temperature sensor 9.1 and the motor temperature signal from motor temperature sensor 9.2, controller 8 adaptively adjusts the speed of the explosion-proof motor 7.1 of circulating water pump 6. By changing the speed of the explosion-proof motor 7.1, the circulating water pump 6 is driven to obtain a corresponding water flow rate. When a temperature increase is detected, the motor speed is increased to increase the flow rate; conversely, the speed is reduced to save energy.

[0030] Simultaneously, the controller 8 can adaptively adjust the speed of the explosion-proof motor 7.2 of the hydraulic pump 1 based on the water temperature signal from the water temperature sensor 9.1 and the motor temperature signal from the motor temperature sensor 9.2. By adjusting the speed of the explosion-proof motor 7.2, the output of the hydraulic pump 1 is changed, which in turn drives the motor 2 to adjust the speed of the fan 3, blowing cold air towards the radiator, thereby lowering the coolant temperature to a set value and adjusting the cooling intensity of the radiator 5. The coolant eventually returns to the coolant tank (not shown in the figure). This dual adjustment mechanism ensures that the heat-generating components (battery, motor, and inverter) can operate within the preset temperature range. This cooling control system can adaptively adjust the coolant flow rate according to the heat generated by the motor, while reducing the power consumption of the cooling system itself, effectively improving the driving range of the explosion-proof vehicle.

[0031] To address the issue of varying heat generation from different components, the system employs refined flow control. Controller 8 can control the opening of the corresponding explosion-proof electronic speed control valves (11.1 - 11.7) on each cooling branch based on temperature signals collected from different motor temperature sensors, water temperature sensors, etc., thereby regulating the flow rate of coolant into the heat-generating components in the cooling module 12.

[0032] For example, when the temperature of a specific motor (such as the left, middle, and rear motors 12.1) is high, the controller 8 will increase the opening of the corresponding explosion-proof electronic speed control valve 11.1 to increase the flow of coolant into that motor; for components with lower temperatures, the opening of their corresponding speed control valves will be reduced. This flow regulation based on temperature feedback ensures the heat dissipation requirements of high-temperature components while avoiding overcooling of low-temperature components, thus optimizing overall energy efficiency.

[0033] Considering the impact of various pipeline factors on coolant flow rate, such as pipeline leakage, length and diameter differences, pipeline elasticity, and changes in coolant density, temperature, and pressure, this embodiment connects a shut-off valve 13.1 to 13.7 in series on each cooling branch equipped with an explosion-proof electrically controlled speed regulating valve 11.1 to 11.7.

[0034] By adjusting the opening degree of the shut-off valves 13.1 to 13.7, the flow deviation caused by the above-mentioned pipeline factors can be compensated, ensuring that the impact of the flow of each branch to the confluence valve 4 is minimized. Specifically, the opening degree adjustment of the shut-off valves must meet the flow requirements of the explosion-proof speed control valve at its maximum opening, thereby ensuring the system's heat dissipation capacity under extreme operating conditions.

[0035] Controller 8 is further configured to execute the following advanced control strategies to achieve a balance between energy saving and noise reduction: First, controller 8 collects the temperature difference of the coolant at the inlet and outlet of the heat-generating component.

[0036] When the coolant temperature difference is greater than the preset temperature difference threshold set by the system, it indicates that the current heat load is large. The controller 8 first controls to increase the speed of the explosion-proof motor 7.1 of the circulating water pump 6, attempting to meet the heat dissipation requirements by increasing the coolant flow rate.

[0037] If, after increasing the speed of the explosion-proof motor 7.1 of the water pump to a certain limit, the coolant temperature difference still exceeds the preset temperature difference threshold, it indicates that simply increasing the flow rate of the circulating water pump is insufficient to meet the heat dissipation requirements. In this case, the controller 8 can control the increase in the speed of the explosion-proof motor 7.2 of the hydraulic pump 1. As the speed of the explosion-proof motor 7.2 increases, the output flow rate of the hydraulic pump 1 increases, driving the fan 3 to rotate faster, thereby increasing the airflow speed of the coolant towards the radiator 5 and accelerating the heat dissipation of the coolant.

[0038] Furthermore, the controller 8 can dynamically adjust the speeds of the explosion-proof motors 7.1 and 7.2 of the water pump and hydraulic pump based on the temperatures at the inlet and outlet of the radiator 5. This control strategy comprehensively considers the operating characteristics of the water pump (water side) and the fan (air side), and formulates the optimal coupling control scheme for the cooling system. This not only ensures that the cooling system can always meet the vehicle's heat dissipation requirements, but also effectively reduces system operating noise, avoids the two motors operating under harsh coupling conditions, and keeps the entire cooling system in a highly efficient and energy-saving state, thereby effectively extending the vehicle's range and the service life of its components.

[0039] In summary, the dual-motor coupled cooling control system for explosion-proof mining vehicles provided in this application, compared with the prior art, utilizes a hydraulic pump, motor, fan, radiator, circulating water pump, explosion-proof water pump motor, explosion-proof hydraulic pump motor, controller, cooling module, and temperature sensor. The controller is configured to: receive the temperature signal from the temperature sensor; adaptively adjust the speed of the explosion-proof water pump motor of the circulating water pump according to the temperature signal to drive the circulating water pump to obtain a corresponding water flow rate; adjust the coolant flow rate into the heat-generating components in the cooling module according to the temperature signal and the water flow rate; and adaptively adjust the speed of the explosion-proof hydraulic pump motor of the hydraulic pump according to the temperature signal, thereby driving the motor to adjust the speed of the fan to adjust the cooling intensity of the radiator, so that the heat-generating components operate within a preset temperature range.

[0040] By employing the above technical solution, this application automatically increases the water pump speed and coolant circulation flow when a high load is detected causing a temperature rise. This on-demand supply method ensures that sufficient coolant flows through the heat source when high heat is generated, promptly removing heat and preventing heat accumulation. This application not only controls the total flow rate but also precisely allocates the flow rate to each heat-generating component based on the temperature signal. This ensures that the components most in need of cooling receive priority flow, allowing all critical components to operate within their optimal temperature range. This meets the heat dissipation requirements of mining explosion-proof vehicles during prolonged high-load operation, ensuring timely and effective cooling of heat and guaranteeing the performance and reliability of the battery, motor, and inverter.

[0041] This application employs a hydraulic transmission scheme where a hydraulic pump and explosion-proof motor drive a motor to adjust the fan speed. By adaptively adjusting the speed of the hydraulic pump and explosion-proof motor based on the temperature signal, the system can control the fan speed, thereby adjusting the cooling intensity of the radiator. When the temperature is too high, the fan speed increases to enhance air convection and improve the heat exchange efficiency of the radiator; conversely, the speed decreases. This adaptive adjustment ensures that the radiator always has sufficient cooling capacity to cope with the heat generated under high loads.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0043] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by the computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular hardware and software combination. The above are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dual-motor coupled cooling control system for explosion-proof mining vehicles, characterized in that, include: Hydraulic pumps, motors, fans, radiators, circulating water pumps, explosion-proof motors for water pumps, explosion-proof motors for hydraulic pumps, controllers, cooling modules, and temperature sensors; The controller is configured to: Receive the temperature signal from the temperature sensor; Based on the temperature signal, the speed of the explosion-proof motor of the circulating water pump is adaptively adjusted to drive the circulating water pump to obtain the corresponding water flow rate. The flow rate of coolant flowing into the heat-generating components in the cooling module is adjusted according to the temperature signal and the water pump flow rate. Based on the temperature signal, the speed of the explosion-proof motor of the hydraulic pump is adaptively adjusted, which drives the motor to adjust the speed of the fan, thereby adjusting the cooling intensity of the radiator and keeping the heat-generating component operating within a preset temperature range.

2. The dual-motor coupled cooling control system for explosion-proof mining vehicles according to claim 1, characterized in that, The temperature sensors include a water temperature sensor for detecting the coolant temperature and a motor temperature sensor for detecting the temperature of the heat-generating component. The controller is used to receive the water temperature signal from the water temperature sensor and the motor temperature signal from the motor temperature sensor, and control the speed of the explosion-proof motor of the water pump according to the water temperature signal and the motor temperature signal to drive the circulating water pump to obtain the corresponding water pump flow rate.

3. The dual-motor coupled cooling control system for explosion-proof mining vehicles according to claim 1, characterized in that, Also includes: Multiple parallel cooling branches, explosion-proof electronic speed control valves, and flow divider valves; The explosion-proof electronically controlled speed regulating valve is installed on the cooling branch, and the water flow of the circulating water pump enters the plurality of explosion-proof electronically controlled speed regulating valves through the diversion valve. The controller is used to control the opening degree of the explosion-proof electronic speed control valve on the cooling branch according to different temperature signals, so as to regulate the flow rate of coolant into the heat-generating components in the cooling module.

4. The dual-motor coupled cooling control system for explosion-proof mining vehicles according to claim 3, characterized in that, The flow divider valve is configured to preset different flow divider ratios according to the cooling flow requirements of each heat-generating component in the cooling module.

5. The dual-motor coupled cooling control system for explosion-proof mining vehicles according to claim 3, characterized in that, Also includes: A shut-off valve is connected in series with the confluence valve and each cooling branch equipped with the explosion-proof electronic speed control valve; By adjusting the opening of the shut-off valve to compensate for the influence of pipeline factors on the coolant flow rate, the influence of the flow rate of each branch on the confluence valve is minimized.

6. The dual-motor coupled cooling control system for explosion-proof mining vehicles according to claim 5, characterized in that, The pipeline factors include at least one of pipeline leakage, length, diameter, elasticity, and coolant density, temperature, and pressure.

7. The dual-motor coupled cooling control system for explosion-proof mining vehicles according to claim 1, characterized in that, The controller is further configured to: Collect the temperature difference of the coolant at the inlet and outlet of the heating component; When the temperature difference of the coolant is greater than the preset temperature difference threshold, the speed of the explosion-proof motor of the circulating water pump is increased. If increasing the speed of the drive motor of the circulating water pump does not change the temperature difference of the coolant beyond the preset temperature difference threshold, then the speed of the explosion-proof motor of the hydraulic pump will be increased.

8. The dual-motor coupled cooling control system for explosion-proof mining vehicles according to claim 7, characterized in that, The controller is further configured to: The speeds of the explosion-proof motors of the water pump and the hydraulic pump are dynamically adjusted based on the temperatures at the inlet and outlet of the radiator.

9. The dual-motor coupled cooling control system for explosion-proof mining vehicles according to claim 1, characterized in that, The cooling module includes a left-middle-rear motor, a left-middle-front motor, a right-middle-rear motor, a right-middle-front motor, a right-front motor, a left-front motor, an oil pump motor, and multiple frequency converters.

10. The dual-motor coupled cooling control system for explosion-proof mining vehicles according to claim 1, characterized in that, The heat-generating components include a battery, a motor, and a frequency converter.

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