521 results about "Cooling power" patented technology

The invention discloses a machine tool control method and system based on mechatronics, and the method comprises the steps: outputting an optimal cutting track sequence according to the three-dimensional model features and material attribute parameters of a machined workpiece; based on the optimal cutting track sequence, motion interference among shafts of the machine tool is eliminated through dynamic weight distribution, and an anti-interference optimization machining instruction is generated; constructing a nonlinear vibration wave propagation model according to the coupling relation between the spindle rotating speed and the feeding speed, and generating a steady speed regulation and control signal; generating an energy efficiency optimal parameter set including motor torque, cooling power and lubricating frequency based on the energy consumption efficiency constraint condition and the steady speed regulation and control signal; and outputting a closed-loop control signal and synchronously updating the three-dimensional machining precision thermodynamic diagram according to the real-time data in the machining process and the predicted deviation of the digital twin model. According to the embodiment of the invention, global optimization, dynamic adaptation and efficient operation of the machine tool can be realized, and technical support is provided for intelligent upgrading of the modern manufacturing industry.

The invention provides a new energy automobile battery thermal management method and system based on big data. The method comprises the steps that real-time data flow and a historical temperature change curve in a battery pack are collected in real time through a distributed sensor array; inputting a pre-trained time sequence prediction model, outputting a predicted temperature change curve and calculating a real-time temperature rise slope; obtaining an environment comprehensive compensation amount according to the environment temperature and the battery health state, and subtracting the environment comprehensive compensation amount from the basic safety threshold value to obtain a dynamic safety threshold value; determining a dynamic temperature compensation amount through a preset slope grading mechanism, and subtracting the dynamic temperature compensation amount from the dynamic safety threshold to obtain an advanced intervention temperature point; and when the temperature of the battery pack reaches the advanced intervention temperature point, a graded cooling system is started, and cooling power grades are dynamically switched according to the growth interval where the real-time temperature rise slope is located. The battery temperature is accurately controlled, and the energy consumption is remarkably reduced.

The invention belongs to the technical field of intelligent building energy management, and particularly discloses and provides a dual-mode cold storage air conditioning system based on human flow dynamic cooperative regulation, which comprises the following steps: acquiring dynamic human flow thermodynamic diagram data in real time, and accurately calculating a multi-region linkage cold load demand value based on a density change correlation coefficient and a heat conduction model; the real-time sensing of the flow density fluctuation and the dynamic refrigeration demand matching are realized; the phase change state of the coolant of the cold storage tank and the power consumption data of the refrigerating unit are collected in real time, the cold storage release proportion, the refrigerating power increment and other key parameters are dynamically adjusted, and the energy utilization rate is increased; the inherent defect of non-uniform cold and heat in zone control is overcome by calculating inter-zone cooling capacity migration parameters; temperature feedback data and a people flow thermodynamic diagram are collected in real time, the proportionality coefficient of the fan rotating speed and the air valve opening degree is dynamically adjusted, a closed-loop learning mechanism is formed, and the matching precision of a temperature control strategy and people flow distribution is continuously optimized.

The invention provides a split type direct-current charging pile liquid cooling heat dissipation system, and belongs to the technical field of direct-current charging piles, a closed liquid cooling circulation system is constructed through equipment such as a liquid cooling circulation pump, a radiator assembly and a temperature sensor array, and active temperature control is realized by adopting a temperature pre-adjusting module as a core. The system firstly collects power and temperature data to establish a power heat effect function to describe a power-temperature relationship, and extracts temperature time sequence characteristics through a heat situation sensing model by adopting an improved time sequence convolutional network to configure a self-adaptive receptive field adjustment mechanism to capture different time scale change modes; and constructing a double-layer optimization framework in combination with a temperature control game model to solve a Nash equilibrium solution, and calculating an optimal cooling adjustment vector including advanced cooling time and cooling power parameters. And a change curve is generated through real-time monitoring and dynamic correction and is converted into a control instruction, the frequency converter is controlled to adjust the rotating speed of the circulating pump and the opening of the flow valve, and advanced adjustment before temperature change is achieved to eliminate response lag.

The invention, which relates to the technical field of energy system regulation and control, provides a seasonal multi-scene-driven adaptive regulation and control system for a park integrated energy system, comprising a seasonal feature intelligent extraction module, a multi-scene plan library construction module, a three-party non-cooperative game model module and an adaptive execution module. The seasonal feature intelligent extraction module is used for decomposing historical load data, extracting seasonal feature parameters and generating an energy supply priority sequence; the multi-scene pre-arranged plan library construction module is used for constructing a regulation and control pre-arranged plan for coping with electricity price fluctuation, equipment faults, extreme weather and production scheduling, and realizing multi-target dynamic balance; the three-party non-cooperative game model module is used for defining strategy spaces and revenue functions of an energy supply side, an energy consumption side and an energy storage side; according to the method, through dynamic operation of the seasonal feature vector and the load incidence matrix, accurate adjustment of the energy supply priority is achieved, the refrigeration power supply response time in summer is shortened, and the waste heat recovery efficiency in winter is improved.

The invention discloses an orthogonally stacked double-sided cooling power module and a preparation method thereof. The orthogonally stacked double-sided cooling power module comprises a decoupling capacitor, a copper-clad ceramic substrate, a power chip and a metal cushion block, the metal cushion blocks and the power chips are stacked and connected layer by layer in a metal cushion block-power chip-metal cushion block mode to form a series chipset, and the copper-clad ceramic substrate is connected with the two sides of the metal cushion blocks in the series chipset and is perpendicular to the power chips. According to the invention, through the cooperative effect of orthogonal stacking packaging and double-face cooling of the double copper cushion blocks, the electrical and thermal performance of the cooling power module is cooperatively optimized, the parasitic inductance of the power module is significantly reduced, the transient over-current supporting capability is significantly improved, and the packaging technology has good flexibility and is suitable for large-scale production. The method is suitable for power modules of different packaging types.

The invention relates to a semi-immersed semi-cold plate type mixed liquid cooling power supply module, which comprises a device cavity, a cooling liquid flowing cavity, a first heating assembly and a second heating assembly, the device cavity is filled with a gas medium, and the cooling liquid flowing cavity is filled with cooling liquid; the cooling liquid flowing cavity is arranged in the device cavity, the first heating assembly is contained in the cooling liquid flowing cavity and is immersed in the cooling liquid, and the second heating assembly is contained in the device cavity and is contained outside the cooling liquid flowing cavity. The second heating assembly is arranged on the outer wall of the cooling liquid flowing cavity. Through the cavity-in-cavity structure, the heat dissipation requirement of the first heating assembly contained in the cooling liquid flowing cavity and immersed in the cooling liquid is met, and the heat dissipation requirement of the second heating assembly arranged on the side wall, making contact with the gas medium, of the cooling liquid flowing cavity is also met; and the advantages of cold plate type liquid cooling and immersed liquid cooling can be combined respectively.

The invention discloses an axle staged cooling system, an axle staged cooling assembly and an engineering vehicle. The axle staged cooling system comprises an engine first-stage cooling system, an engine second-stage cooling system, an axle first-stage cooling system and an axle second-stage cooling system. Each stage of cooling system controls cooling water and oil path trend through a thermolator in each loop, controls axle cooling oil and engine cooling water to exchange heat, and meets different cooling requirements of an axle. The temperature sensor in each loop outputs water and oil temperature signals to a motor of the cooling fan, so that the rotating speed of the fan is increased to different degrees along with the temperature rise of each cooling system, and different cooling powers are matched. According to the grading system, the engine and the axles can work at the proper temperature at the same time, the two heat exchangers cool cooling oil of the front axle, cooling oil of the middle axle and cooling oil of the rear axle respectively, the cooling capacity of the front axle is improved, the braking effectiveness of the front axle is guaranteed, and rollover caused by serious backward movement of the gravity center of a vehicle during emergency braking is prevented.

The present disclosure relates to a water-cooled integrated charger and discharger, which provides a charger and discharger comprising: a charging and discharging jig configured to charge and discharge a battery; a water-cooled power supply part configured to supply a power source to the charging and discharging jig and configured to be cooled with water; and a chiller connected to the water-cooled power supply part through a water-supply pipe and a drainpipe, and configured to release heat energy generated from the water-cooled power supply part to an exterior environment.

The invention relates to an intelligent refrigeration control method based on dynamic computing power distribution, electronic equipment and a computer storage medium. The method comprises the following steps: acquiring a whole-network multi-dimensional data stream, acquiring data in real time through a distributed sensor network, and performing multi-source data fusion and space-time alignment to form a monitoring data set; according to the monitoring data set, a temperature field is generated based on computational fluid dynamics (CFD), and through automatic closing of a cold and hot channel, the air supply amount is adjusted to be matched with a thermal load; predicting a high-load area based on a load prediction model, and dynamically migrating computing power to a low-temperature area or dormant redundant nodes in combination with real-time temperature distribution; a multi-target optimal regulation and control model is constructed, and based on reinforcement learning, the coupling relation among the IT load, the environmental parameters and the refrigeration power consumption is continuously optimized; through energy consumption statistics and analysis, automatic early warning is carried out on abnormal energy consumption and local overheating, and a thermal anomaly area is dynamically displayed through a multi-dimensional chart. According to the invention, deep collaboration of the computing power of the data center and the refrigeration system is realized.

The invention relates to the technical field of power equipment, in particular to an intelligent thermal management system for a cleaning robot, which comprises a state sensing unit, a risk assessment unit, a thermal state calculation unit, a data decision unit, an execution unit and a feedback correction unit, and is characterized in that the state sensing unit is used for acquiring internal temperature and humidity and key component temperature; the risk assessment unit calculates the characterization values of the dew formation trend and the overheating trend; the thermal state calculation unit quantifies the overall thermal state of the system; the data decision-making unit determines the actual adjustment amount of the heating and cooling power according to the parameters; the execution unit comprises a heating module, a cooling module and a load management module and correspondingly adjusts output power. And the feedback correction unit corrects the thermal state according to the operation deviation. According to the invention, through multi-parameter fusion decision and dynamic power adjustment, collaborative management of heat dissipation and condensation prevention is realized, and the working reliability of the cleaning robot in a severe environment is improved.

The invention relates to a cooler for cooling power semiconductors by means of a cooling fluid, comprising a cover plate, which can be provided on a power semiconductor; a channel plate, which is designed to form, together with the cover plate, a closed cooling channel for the cooling fluid; an insert, which is provided in the cooling channel, said insert being designed to increase the contact surface between the cooling fluid and the cooler; and a stiffening plate, which lies opposite the cover plate on a connection surface on the channel plate, said stiffening plate having a specified thickness which is designed to adapt the stiffness of the cooler in order to allow a constant stiffness for different cooling channel geometries.

To provide a sintered compact production apparatus which can reduce the cooling power of a microwave oscillator and further can reduce the heating energy of an object to be heated caused by microwaves.SOLUTION: A sintered compact production apparatus 1 provided with a microwave heating device 2 having a microwave oscillator 21 which oscillates microwaves, a wave guide 22 which is connected to the microwave oscillator 21 and a microwave heating furnace 23 where the microwaves are propagated via the wave guide 22, and is configured to heat an object 5 to be heated in the microwave heating furnace 23 with the microwaves, comprises: an air cooling type cooling device 4 which feeds air to the microwave oscillator 21 and cools the same; and a preheater 3 which preheats the object 5 to be heated with the air which has fed from the air cooling type cooling device 4 to the microwave oscillator 21 and has recovered heat generated in the microwave oscillator 21.SELECTED DRAWING: Figure 1

The invention provides a water-oil combined heat dissipation power module. On the basis of an existing water-cooling power module, a circulating oil way defined by a second cavity, a flow guide cover, a heat dissipation device, a circulating oil pump and related necessary connecting pipelines is additionally arranged. When the power module works, cooling water flows in from the near end of the power module and flows out from the far end of the power module below the radiator, in the process, the water temperature rises while the cooling water dissipates heat of the bridge arm chips, and the heat dissipation effect of the cooling water on the bridge arm chips is sequentially decreased from the near end to the far end. Meanwhile, the cooling oil circularly flows, flows through a cavity formed by the flow guide cover and the radiator after flowing out of the circulating oil pump and is directly cooled on the surface of the power chip, the oil temperature is increased while the cooling oil dissipates heat of the bridge arm chips, the heat dissipation effect of the cooling oil on the bridge arm chips is sequentially decreased from the far end to the near end, and the heat dissipation efficiency of the cooling oil on the bridge arm chips is greatly improved. And the heat dissipation effect is just opposite to that of the cooling water path. According to the technical scheme, the problem that an existing power module is not uniform in heat dissipation can be solved.

The invention belongs to the technical field of semiconductors, and discloses a power semiconductor module packaging framework and a design and preparation method thereof. A first copper-clad ceramic substrate; interconnection of the upper surface and the lower surface of the power semiconductor chip is realized through the solder layer; the carbon reinforced metal matrix composite material cushion block is bonded with the upper surface of the chip through the solder layer; a second copper-clad ceramic substrate; a second heat sink base plate; compared with a traditional material, the heat dissipation performance is improved by more than 30%, the heat resistance can be remarkably reduced, and the heat dissipation performance is improved. The thermal expansion coefficients of the diamond / aluminum, the diamond / silver, the graphene / silver and the graphene / copper are better matched with those of the power semiconductor chip, so that the packaging framework can reduce the interface thermal stress by more than 35%, the possibility of interface layering caused by thermal circulation is reduced, and the reliability of the double-sided cooling power semiconductor device is greatly improved. According to the innovative scheme, the problem of heat-force mismatch in traditional double-sided cooling packaging is effectively solved.

The invention relates to the technical field of cabinet management, in particular to an intelligent cabinet temperature control management system and device and a using method. According to the method, the current cooling requirements of all the cabinets are effectively recognized by collecting the heat load related parameters of the cabinets, calculating the temperature difference between the interiors of the cabinets and the air inlet and outlet and combining the equipment operation power to analyze the matching degree between the heat dissipation capacity and the load state; and the cooling power required to be supplemented or reduced can be dynamically calculated when the running state of the system is not obviously changed, so that the perspectiveness and the accuracy of temperature control response are guaranteed. According to the method, the actual cooling requirements of the cabinets are associated with the power headroom of the corresponding cooling equipment, then a balance constraint condition is established, an optimization solution mode is adopted after slack variables are introduced, the optimal cooling power output of each cooling equipment under the requirements of the multiple cabinets can be dynamically calculated, and cooling power distribution is more coordinated and adaptive.

The present invention relates to a cooling fin arrangement (1) of a cooler, through which fluid can flow, for cooling power electronics (200). The cooling fin arrangement (1) comprises at least one cooling fin (10), which is formed from a wave profile that periodically repeats in a direction of repetition (501), the direction of repetition (501) being perpendicular to a flow direction (500). The invention also relates to a cooler, through which fluid can flow, for cooling power electronics (200), the cooler comprising a cooling fin arrangement (1) of this type, and to a power electronic assembly (1000), comprising power electronics (200) and a cooler (100) of this type, through which fluid can flow.

The present invention belongs to the technical field of battery heat dissipation, and in particular to a cooling plate assembly for cooling power battery liquid; the present invention comprises: a water inlet chamber, a water outlet chamber, a battery module and a plurality of water replenishing chambers located between the water inlet chamber and the water outlet chamber; wherein the battery module is arranged between the water inlet chamber and the water replenishing chamber, between adjacent water replenishing chambers, and between the water replenishing chamber and the water outlet chamber; a water inlet is provided on the water inlet chamber, a water outlet is provided on the water outlet chamber, and a plurality of groups of hollow cooling plates are installed between the water replenishing chamber and the water inlet chamber and the water outlet chamber, and the cooling plates are used to absorb the heat of the battery module; and a battery slot is formed between each adjacent group of cooling plates, and the battery module is installed in the battery slot; the present invention can separate adjacent battery modules by providing a plurality of cooling plates between each group of battery modules, and the coolant takes away the heat of the battery module when flowing through the cooling plates, thereby solving the problem that heat accumulation cannot be dissipated due to mutual contact between battery modules.

The invention relates to the technical field of coatings, in particular to a double-layer super-hydrophobic passive daytime radiation cooling coating and application thereof. The super-hydrophobic passive daytime radiation cooling coating is developed through a two-step spraying process. And the bottom layer is formed by combining a high refractive index TiO / Al2O3 composite material and modified polydimethylsiloxane. The top layer employs high band gap SiO to mitigate ultraviolet absorption and combines unmodified PDMS to ensure high thermal emissivity and low surface energy. By accurately controlling the particle size distribution and concentration gradient between the two layers of structures, the optimized SPDRC coating shows excellent optical performance, the solar reflectivity is 93.2%, and the mid-infrared thermal emissivity is 95.4%. Under the direct irradiation of the sun, the temperature reduction of 10 DEG C is obviously lower than that of the environment, and the radiation cooling power of 125 Wm <-2 > is realized. In addition, the coating has a water contact angle of 155 degrees, has strong super-hydrophobicity, can ensure excellent self-cleaning performance and long-term durability, and is suitable for actual outdoor application of building cooling.

The invention discloses an online control method and device of an aerocar battery thermal management system. The method comprises the following steps: constructing a battery power model and a thermal load model of the hovercar; based on the battery state of the hovercar at the current moment and the flight state and the environmental condition in the future preset time period, a battery power model and a thermal load model are respectively used for predicting the power demand and the thermal load change of the hovercar in multiple time scales in the future; constructing a cost function for online control of the battery thermal management system, wherein the cost function takes the minimum battery temperature fluctuation and the minimum cooling energy consumption of the hovercar as targets; the cost function is solved based on the future multi-time-scale power requirement and thermal load change of the hovercar, the optimal control strategy of each time scale is obtained, and the control strategy comprises cooling power distribution and battery power distribution. The power and cooling strategy of the battery can be adjusted in real time, the safety of the battery is improved, and the service life of the battery is prolonged.

The invention discloses a roof component based on evaporation and radiation collaborative cooling and preparation and construction thereof. The roof component breaks through the limitation of a single cooling mode through a multi-layer structure coupling evaporative cooling and radiation cooling technology. The reflective film specifically comprises a base layer, an evaporation radiation synergistic cooling material layer and a reflective protection layer. The synergistic material layer is formed by modifying polyacrylamide hydrogel through lithium bromide moisture absorption salt, titanium dioxide nanoparticles are embedded to improve the short-wave reflectivity and long-wave emissivity, and the synergistic material layer has the functions of radiation cooling and moisture absorption evaporation; the reflective protective layer is made of polyvinylidene fluoride-hexafluoropropylene copolymer, so that radiation cooling power is supplemented and pollution is prevented on the premise of moisture permeability; the heat entering a room is reduced by combining an evaporation radiation synergistic cooling material and a reflection protection material; by means of the roof component based on evaporation and radiation collaborative cooling, the limitation of cooling power can be broken through, the cooling effect is enhanced, and the purpose of building energy saving is achieved.

The application discloses a transformer operation state monitoring and fault early warning method based on state index calculation, relates to the technical field of transformer operation state monitoring, and aims to solve the problem of reduced accuracy of potential fault identification. In the transformer operation process, winding temperature is collected to calculate temperature rise trend and monitor vibration state, vibration frequency is obtained, operation stress coefficient is calculated in combination with the temperature rise trend and the vibration frequency, the electric conductivity of insulation oil in the oil circulation pipeline is detected, the state index is generated by comprehensively considering the electric conductivity and the operation stress coefficient, and the transformer operation state is classified accordingly. When the state is warning, multiple groups of different cooling powers are inputted, the monitoring time is set, the corresponding radiator outlet air temperature is collected, the power change amount and the outlet air temperature difference change amount are calculated after the cooling powers are sorted, the heat dissipation characteristics are comprehensively evaluated, and it is judged whether a fault warning signal is generated, so that early warning of potential faults of the transformer is realized, and operation safety and reliability are improved.

The present invention relates to a fluid-permeable cooler (100) for cooling a power module (208) that comprises a power substrate. The fluid-permeable cooler (101) comprises a first metal part (101), a second metal part (102) and a cooling structure (1). The first metal part (101) and the second metal part (102) are interconnected by means of a soldering process and define a cooling channel (111) which is permeable by a fluid and in which the cooling structure (1) is located.The first metal part (101) comprises a receiving region (109) to which the power module (208) can be attached. The first metal part (101) is made from a metal material which has an expansion coefficient that is greater than the expansion coefficient of the power substrate (208). The invention also relates to a power electronics assembly (1000) having a cooler (100) of this kind and a power module (200).

Program workload hints are sent from a processor to a sub-ambient cooling controller at or before the start of the program to enable the sub-ambient cooling device so that required cooling of the processor integrated circuit is anticipated before a significant temperature rise in the processor occurs. Program workload hints are used instead of processor temperature so that thermal lag is reduced, thereby reducing processor temperature rise. In addition, power to the sub-ambient cooling device may be turned off near or at completion of the program to minimize cooling power used. Multiple processors may share sub-ambient cooling device fans during thermal load diversity of the processors running programs at different times.

The invention provides a full-immersion liquid cooling power module and a charging system, and relates to the technical field of heat dissipation of electronic equipment. The liquid cooling power module comprises a closed shell, a power assembly, an oil inlet, an oil outlet and an electric connection terminal, wherein the electric connection terminal is connected with the power assembly; the power assembly is fixedly arranged in the closed shell, and the closed shell is internally provided with insulating cooling liquid for immersing the power assembly; the oil inlet is formed in a first position on the side wall of the closed shell, the oil outlet is formed in a second position on the side wall of the closed shell, and the first position is lower than the second position; and the electric connection terminal is arranged at a third position on the outer wall of the closed shell, and the third position is higher than the second position. The liquid cooling power module can solve the problem of leakage of the insulating cooling liquid of the liquid cooling power module, and reduces the cost of the liquid cooling power module.

The invention relates to the field of charging power distribution, in particular to a real-time power intelligent distribution method and system for a liquid cooling charging pile. The method comprises the following steps: obtaining a real-time monitoring log of a liquid cooling pipeline, carrying out instantaneous cooling power fluctuation evaluation, and generating cooling behavior characteristic data; real-time current and voltage waveform data are collected, interface charging power demands are charged one by one, and accurate charging power demands are generated; carrying out cooling request analysis on the liquid cooling pipeline according to the cooling behavior characteristic data to obtain a cooling request priority; performing dynamic safe charging power upper limit calculation based on the precise charging power demand and the cooling request priority, thereby dynamically and safely constraining the power; and carrying out dynamic charging power distribution decision according to the dynamic security constraint power, and carrying out post intelligent power optimization. According to the invention, optimization of power distribution logic is realized, and efficient and safe charging power distribution of the charging gun is improved.

A cooling device cools a power semiconductor device. The cooling device includes a tank that accommodates a power semiconductor device, insulating oil, and a refrigerant liquid having a boiling point temperature lower than a boiling point temperature of the insulating oil and a specific gravity larger than a specific gravity of the insulating oil. The insulating oil and the refrigerant liquid are stored in the tank in a mixed state to cool the power semiconductor device.

The invention discloses a double-circulation liquid-cooled power battery thermal management system and a control method, and relates to the technical field of power battery thermal management, the system comprises a thermal management platform, and the thermal management platform is in communication connection with the following modules: a data acquisition and analysis module, which is used for collecting battery basic data associated with a thermal generation rate, performing preprocessing to form a comprehensive data set; and the heat generation rate prediction module is used for collecting battery historical data and environment temperature parameters. According to the method, the battery historical data and the environment temperature parameters are combined, the LSTM neural network is utilized to construct the data driving model, the battery heat generation rate in the future 5-10 minutes is predicted, the system can start the cooling or heating function 1-2 minutes ahead of time based on the prediction result, passive response is converted into active prediction, and the prediction efficiency is improved. Therefore, the system can deal with the change of the thermal state of the battery more timely, the problem of local temperature overrun caused by slow response speed is avoided, and the safety and stability of the battery are improved.

The invention is suitable for the technical field of energy management of new energy automobile power systems, and provides an intelligent energy consumption optimization method and system for a new energy automobile power system.The method comprises the steps that needed pre-cooling energy is calculated based on the pre-cooling power adjustment amount, and when a target vehicle starts to decelerate and enters a shielded vehicle following working condition, the pre-cooling energy is calculated according to the pre-cooling power adjustment amount; and the part, used for meeting the precooling energy, in the brake recovery energy generated in the process is directly distributed to a compressor through a direct-current bus, so that the precooling power adjustment amount is achieved. Active optimization of the energy flow of the power system is achieved, the energy utilization efficiency of the whole vehicle is effectively improved, the battery energy consumption is reduced, the cruising ability is prolonged, and meanwhile the stability and reliability of the power system under the cold chain transportation working condition are improved.

The invention, which relates to the technical field of the charging pile, discloses an integrated liquid cooling system charging pile comprising a pile body and a power module arranged in the pile body. The liquid cooling system is arranged in the pile body, the liquid cooling system comprises a liquid cooling box and a heat dissipation mechanism, the liquid cooling box is connected to the power module through a cooling pipe so as to cool the power module, liquid flows back to the liquid cooling box through a liquid return pipe, and the heat dissipation mechanism is located between the liquid return pipe and a connecting part of the liquid cooling box; the flow guide mechanism is arranged on the pile body, the flow guide mechanism comprises an air inlet and an air outlet which are formed in the pile body, an air inlet fan and an air outlet fan are arranged in the air inlet and the air outlet respectively, and the opening direction of the air inlet and the opening direction of the air outlet are obliquely arranged relative to the vertical side face of the pile body. According to the invention, liquid cooling and air cooling cooperative heat dissipation is adopted, while active liquid cooling is carried out on the power module, directional air flow is utilized to carry out auxiliary air cooling on the power module, and the heat dissipation efficiency is improved.