2595 results about "Electronic expansion valve" patented technology

The invention provides an intelligent adjusting and dynamic defrosting method and system based on multiple sensors and a medium The method comprises the steps that firstly, monitoring data are obtained in real time according to the multi-dimensional sensors deployed in a freezer, and a multi-source data matrix is obtained through preset data processing and integration; secondly, dynamically adjusting a frost condition model weight coefficient according to monitoring data, and quantifying a frost condition coefficient based on a frost condition model in combination with a multi-source data matrix; then, executing a three-stage defrosting strategy according to the frost condition coefficient, and respectively adjusting working parameters of defrosting equipment such as a compressor, a condensation fan or a heater; and finally, precise control over the box temperature is achieved through power step soft start of a compressor and PID dynamic adjustment of an electronic expansion valve, and energy efficiency optimization is achieved by automatically optimizing the rotating speed of a condensation fan based on the environment temperature and humidity. The corresponding defrosting operation is triggered through the frost condition coefficient, and the effectiveness of defrosting and the stability of the box temperature are improved; in addition, the adaptability of special scenes is enhanced by dynamically adjusting the weight.

The invention relates to the technical field of automatic control, in particular to an efficient magnetic suspension water chilling unit control system which comprises a refrigerant flow monitoring module, a dynamic flow adjusting module, a start-stop delay judging module, a temperature gradient sensing module and a frequency self-adaptive adjusting module. According to the method, the temperature difference curve is established through real-time monitoring data, the refrigerant flow synchronism is analyzed, temperature difference abnormity can be accurately recognized, the refrigerant adjusting requirement is extracted, traditional threshold value judgment lag is avoided, the refrigerant flow is controlled in real time, fluctuation impact is buffered, and the adjusting precision is improved by dynamically adjusting the opening degree of the electronic expansion valve and the rotating speed of the circulating pump; the method has the advantages that starting and stopping conditions are accurately judged, misoperation is reduced, early positioning of thermal imbalance is achieved through temperature difference sensing of an evaporator, a compression cavity and a condenser and establishment of an internal temperature difference distribution diagram, energy efficiency reduction is avoided, the frequency of a frequency converter is adjusted according to temperature difference distribution, the optimal load is matched, frequency adaptivity and system load response are improved, and refrigeration cycle energy efficiency is optimized.

The invention discloses an energy-saving control method and system of a dehumidifier, a medium and equipment, and relates to the field of dehumidification equipment. The method comprises the following steps: acquiring node position data, node air velocity data, node humidity data and node temperature data in a space by arranging sensor nodes, and establishing an air flow model by utilizing a fluid dynamic model in combination with three-dimensional space data. Generating a moisture distribution diagram based on the model, determining a target area with the moisture concentration exceeding a preset threshold value, then determining an optimal target airflow channel according to the position of the target area, and controlling the rotation direction of a fan to enable the suction direction of the fan to be consistent with the airflow direction of the target airflow channel. The target air speed of the draught fan is set according to the channel airflow speed, the operation frequency of the compressor and the opening degree of the electronic expansion valve are cooperatively adjusted by combining the humidity value of the target area, the target air speed and the operation parameters of the dehumidifier, precise dehumidification control based on space moisture distribution is achieved, the dehumidification efficiency of the dehumidifier is improved, and therefore the energy-saving capacity of the dehumidifier is improved.

The invention relates to the technical field of refrigeration equipment control, in particular to an air conditioner control method and system. Firstly, a refrigerant flow prediction model is established by combining the advantages of LSTM and XGBoost, a time sequence and static characteristics are accurately captured, prediction precision and system adaptability are improved, reliable data support is provided for intelligent regulation and control, refrigerant distribution is optimized, energy efficiency is improved, and energy consumption is reduced; secondly, the opening degree of an electronic expansion valve and the frequency of a compressor are controlled in a feedforward mode through a multivariable cooperative control algorithm, the load and the flow are accurately matched, the system efficiency is improved, it is ensured that all assemblies operate in a coordinated mode, energy waste is reduced, and stability and comfort are optimized; finally, PID feedback control is combined, the frequencies of the electronic expansion valve and the compressor are finely adjusted in real time, the optimal energy efficiency and stability of the system are ensured, closed-loop control is achieved, the temperature control precision is further improved, fluctuation is reduced, and the energy efficiency is optimized.

The invention discloses a waste heat source transcritical CO2 heat pump system and an optimization method thereof. The waste heat source transcritical CO2 heat pump system comprises a refrigerant connecting pipeline, a gas cooler water side connecting pipeline, an evaporator water side connecting pipeline and a PID control module connected with the refrigerant connecting pipeline, the gas cooler water side connecting pipeline and the evaporator water side connecting pipeline. The compressor is connected with a first gas cooler, the first gas cooler is connected with an intermediate heat regenerator, the intermediate heat regenerator is connected with a second gas cooler, the second gas cooler is connected with an electronic expansion valve, the electronic expansion valve is connected with an evaporator, the evaporator is connected with the intermediate heat regenerator, the intermediate heat regenerator is connected with the compressor, and the intermediate heat regenerator is connected with a bypass adjusting valve in parallel. A water inlet of the second gas cooler is provided with a first water pump, a water outlet of the second gas cooler is connected with a water inlet of the first gas cooler, and the water side of the second gas cooler is connected with a water temperature adjusting valve in parallel. A second water pump is arranged at a water inlet of the evaporator. Under the conditions of a waste heat source and a low pressure ratio, deep utilization of waste heat resources can be achieved, and intermediate temperature backheating required by high heat supply temperature is met.

The invention discloses a new energy vehicle heat management method, device and equipment and a storage medium, and relates to the technical field of new energy vehicle heat management.The new energy vehicle heat management method includes the steps that the vehicle running state, the compressor working state, an air conditioner enabling signal and the battery temperature are obtained; determining a target thermal management mode according to at least one of the vehicle running state, the compressor working state, the air conditioner enabling signal and the battery temperature; operation parameters of a target control assembly are obtained according to the target heat management mode, wherein the target control assembly comprises a compressor, a refrigerant electromagnetic valve, an electronic expansion valve, a fan, a water pump and a PTC heater; thermal management is conducted on a vehicle battery and / or a cab on the basis of the operation parameters, the operation parameters comprise at least one of the rotating speed of a compressor, the state of a refrigerant electromagnetic valve, the opening degree of an electronic expansion valve, the rotating speed of a fan, the state of a water pump and the power of a PTC heater, and the charging efficiency and the system energy efficiency in the low-temperature and high-temperature environments are improved.

The invention provides a radiation air conditioning system. The radiation air-conditioning system comprises a radiation air-conditioning plate, an indoor heat exchanger, a compressor, an outdoor heat exchanger and an indoor temperature detection device, and the controller is configured to close a radiation air-conditioning plate electromagnetic valve and open a heat exchanger electromagnetic valve after a starting-up signal is obtained; if the change rate d of the compressor frequency within the time t0 is not larger than the preset change rate d1, when the evaporation temperature is smaller than the dew point compensation temperature, the opening degree of the first electronic expansion valve is gradually reduced till the evaporation temperature is not smaller than the dew point compensation temperature, and the opening degree of the first electronic expansion valve is S1 at the moment; if S1 is not smaller than the preset opening degree Sa, a radiation air conditioner plate electromagnetic valve is opened, a heat exchanger electromagnetic valve is opened, and circulation is carried out again; if S1 is smaller than the preset opening degree Sa, a radiation air conditioner plate electromagnetic valve is closed, and a heat exchanger electromagnetic valve is opened; and if the continuous operation time of the compressor is t10 and the first temperature difference value delta T belongs to the target temperature interval [delta T1, delta T2], the electromagnetic valve is opened and closed according to the capacity section where the frequency of the compressor is located.

The invention relates to the technical field of energy conservation and new energy, and discloses an electric vehicle integrated heat management system which comprises a refrigerant loop and a cooling liquid loop. The refrigerant loop and the cooling liquid loop realize heat interaction through the plate heat exchanger; a compressor, an eight-way valve, an in-cabin heat exchanger, a gas-liquid separator, a first heating assembly, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, a battery direct cooling plate and a first external heat exchanger are arranged on the refrigerant loop; a radiator, a three-way water valve, an electric driving system, a motor water pump, an expansion water tank, a second external heat exchanger and a second heating assembly are arranged on the cooling liquid loop. The problems that a battery electric vehicle thermal management system is numerous in component, complex in loop and high in failure rate are solved.

The invention provides a solar energy-air energy composite heat pump system based on self-contained energy storage cascade application and a control method. The solar energy-air energy composite heat pump system comprises a heat pump host module, a solar module and a hydraulic module. Hot water generated by the solar heat collector is accumulated in the energy storage water tank and serves as an external heat source for active enhanced vapor injection to improve the performance of the heat pump. An active enhanced vapor injection device is designed for a heat pump host module, a refrigerant in an economizer absorbs heat of heat storage hot water, is jetted to a middle pressure cavity of a compressor and is converted into heating capacity, and the performance of the heat pump is greatly improved. When it is detected that the temperature in the heat storage water tank is reduced to a certain temperature, the flow direction of the heat storage hot water is switched through the switching assembly, the heat storage hot water is pumped to the heat pump fluorine-water heat exchanger for heat exchange, the heat pump performance is improved, and cascade application of the heat storage hot water is achieved. Refrigerant flows in the fin type heat exchanger and the fluorine-water heat exchanger are controlled by respective electronic expansion valves, and the opening degrees of the fin type heat exchanger and the fluorine-water heat exchanger are adjusted according to respective air suction superheat degrees, so that respective optimal heat exchange effects are realized.

The invention relates to the technical field of refrigeration, in particular to an anti-icing refrigeration method and system.The anti-icing refrigeration method comprises the steps that water temperature data in a water tank are collected in real time, and temperature dynamic parameters reflecting the temperature change trend and stability are calculated; dynamically adjusting the opening degree of the electronic expansion valve based on the temperature dynamic parameter; when the temperature dynamic parameter meets a preset icing triggering condition, deicing circulation is executed; a compressor and an electronic expansion valve are closed, and a circulating pump is started; monitoring the temperature dynamic parameter in real time in the deicing cycle, dynamically adjusting the duration of the deicing cycle based on the temperature dynamic parameter, judging whether a preset deicing completion condition is met or not based on the temperature dynamic parameter, if not, continuing the deicing cycle, and if yes, terminating the deicing cycle. And the compressor and the electronic expansion valve are restarted to recover the refrigeration cycle. The technical problems that in the prior art, due to freezing, energy consumption of a refrigerating system is too high, and the automation degree is insufficient are solved.

Provided are a control method for an electronic expansion valve (300), a heat pump system, and a storage medium. The method comprises: upon receipt of a shutdown instruction of a heat pump system, measuring a pressure value related to operation of an electronic expansion valve (300) in the heat pump system; and controlling the opening degree of the electronic expansion valve (300) on the basis of the pressure value, so that the heat pump system reaches a pressure balance state.

The invention discloses a whole-vehicle thermal management system of a pure electric vehicle based on a shell-and-tube phase change heat accumulator and a control method of the whole-vehicle thermal management system. The whole-vehicle thermal management system comprises a control module, a heat pump air conditioning system, an electric heating and phase change heat storage system, a battery thermal management system and an electric drive cooling system. The control module controls the rotating speed of the compressor and the opening degree of the electronic expansion valve and adjusts refrigerant flow. The control module controls the rotating speed of each water pump and adjusts the cooling liquid flow; the control module controls the fan and the air blower to adjust the air flow, controls the on-off states of the four-way valves, the three-way valves and the one-way valves and adjusts circulation loops of refrigerants and cooling liquid, and therefore energy coupling between different systems and switching of different working modes are achieved. According to the invention, energy coupling and integrated management among the systems are realized, and the thermal management requirement is met with low energy consumption in multiple scenes.

The invention discloses an electric automobile integrated CO2 thermal management system which comprises a refrigerant loop and a cooling liquid loop. The refrigerant loop comprises a WCC, a first electronic water pump, an evaporator, a warm air core body, an electric compressor, an outdoor air cooler, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, a fourth electronic expansion valve, a first stop valve, a second stop valve and a gas-liquid integrated separator; the cooling liquid loop comprises an electric drive loop and a battery loop. According to the system, integration of a cooling liquid loop is achieved, and the risk of leakage of refrigerants is reduced. The invention further discloses a control method of the integrated CO2 heat management system of the electric automobile, various working modes can be achieved, the heating and refrigerating requirements of a passenger compartment of the electric automobile are met, meanwhile, refined management such as motor cooling, waste heat recovery and cooling and heating of a power battery can be conducted, and the system is suitable for popularization and application. An integrated framework of a heat pump air conditioner, a battery and an electric drive heat management system is achieved.

The present invention discloses an electronic expansion valve with a buffering effect, which includes a stator assembly and a valve seat assembly. The valve seat assembly is installed at the lower part of the stator assembly. The valve seat assembly includes an end cover assembly, a magnetic isolation tube, a valve needle assembly and a valve seat assembly. A lead screw assembly is arranged inside the magnetic isolation tube. The valve needle assembly includes a valve needle and a valve needle spring arranged in the inner hole at the lower end of the valve needle. The lower end of the valve needle is inserted with a valve needle head. A balance flow channel is opened in the middle of the valve needle head. A bushing is sleeved on the outer side of the upper part of the valve needle head. One end of the bushing abuts against the valve needle spring. A valve needle sleeve is arranged at the lower end of the bushing. A valve needle internal leakage O-ring is installed between the inner side of the valve needle sleeve and the valve needle head. The lead screw in the lead screw assembly axially inserts into the central threaded through hole of the valve needle. The present invention has a balance pressure function, a long service life, and a buffering effect when closing the valve, preventing the problem of thread jamming and unable to open the valve.

The invention discloses a cooling method and device of a magnetic suspension motor, the magnetic suspension motor, a storage medium and a computer program product, a coolant pipeline is arranged at a motor winding of the magnetic suspension motor, and an electronic expansion valve is arranged on the coolant pipeline; the method comprises the steps that whether the opening degree of the electronic expansion valve is adjusted or not is determined according to the temperature of a motor winding and the reference temperature of the motor winding; if it is determined that the opening degree of the electronic expansion valve is adjusted, the temperature of the motor winding and the reference temperature of the motor winding are substituted into a preset anti-saturation PI algorithm, and an opening degree calculated value of the electronic expansion valve is obtained; and controlling the opening degree of the electronic expansion valve to be the opening degree calculation value. According to the scheme, the coolant flow is controlled by arranging the electronic expansion valve, the opening degree of the electronic expansion valve is controlled according to the anti-saturation PI algorithm, the electronic expansion valve is prevented from being in a saturation state, and the sensitivity of opening degree adjustment of the electronic expansion valve and the accuracy of motor winding temperature control are improved.

The invention relates to the technical field of intelligent fire extinguishing control of energy storage power stations, in particular to a method and system for plasma protection of thermal runaway of an air-cooled energy storage power station. The method comprises the following steps: processing real-time data acquired by a multi-source sensor through a dynamic risk assessment model to obtain a risk level and an early warning level; an initial control instruction for the plasma generator and the air cooling and refrigerating system is formed according to the risk level and the early warning level; the initial control instruction is processed to form a driving control signal; a control signal is subjected to cooperative execution processing to obtain a high-energy active particle jet flow, a forced airflow and a refrigeration effect. The system comprises an air cooling box body, a battery, a fan, a plasma generator, an ejector, an intelligent controller, a compressor, a gas-liquid separator, a heat exchanger, an electronic expansion valve, a drying filter, a gas sensor and a pressure sensor valve. The safety and reliability of the energy storage power station are improved.

The invention relates to a control method and device of a heat pump system, computer equipment and a storage medium. In the starting process of the heat pump system, the first controller is used for controlling the opening degree of the electronic expansion valve based on the exhaust temperature set value and the exhaust temperature. In the starting process of the heat pump system, whether the heat pump system enters a stable operation state with system parameters reaching dynamic balance or not is judged. And in the stable operation state of the heat pump system, the second controller is used for controlling the opening degree of the electronic expansion valve based on the minimum stable superheat degree and the superheat degree. Oscillation of the superheat degree of the evaporator can be effectively restrained through control over the starting process, the adjusting time is shortened, and the operation stability of the heat pump system is improved. The control in the stable operation stage can enable the superheat degree of the evaporator of the heat pump system to be close to the minimum stable superheat degree, more refrigerants can participate in phase change heat absorption, the heating capacity of the refrigerants is improved, the power consumption of a compressor is reduced, and the energy efficiency ratio of the heat pump system is increased.

The invention discloses a heat pump water heater low-temperature freezing oil return control method and system based on dynamic operation parameter adjustment, and the method comprises the following steps: monitoring the evaporator outlet refrigerant temperature, the compressor air return port temperature and the environment temperature in real time through a sensor, and calculating the temperature difference as a core control parameter; the opening degree of an electronic expansion valve and the rotating speed of a fan are dynamically adjusted through a fuzzy control algorithm in combination with the environment temperature and the compressor running frequency, and the low-temperature oil return stability of the system is maintained; when the core temperature difference exceeds a set threshold value, an oil return compensation mode is triggered, and the circulating fluidity of lubricating oil is enhanced by improving the frequency of a compressor and adjusting the opening degree of a bypass valve of a condenser; in the oil return compensation process, closed-loop adjustment is conducted on the exhaust temperature of the compressor through a PID control algorithm, and the operation safety of the system is ensured. The operating parameters are dynamically adjusted, the parameters such as the environment temperature and the system load are monitored in real time, and the control parameters are dynamically adjusted according to the parameters, so that the oil return requirements under different working conditions are met.

The invention discloses a multi-temperature-zone collaborative refrigeration system and an energy-saving control method for a variable-temperature refrigeration house, and belongs to the technical field of refrigeration house temperature control, and the method comprises the steps of calling a dynamic load prediction model based on an obtained initial real-time monitoring data set, and calculating thermal load change trend data of each temperature zone in a preset time period; the electronic expansion valve is adjusted and a start-up control instruction is generated by combining the thermal load trend and the cargo temperature and humidity requirements, and the refrigerating unit is started, stopped or switched to operate the system; during system operation, the central oil way management module is started, and the oil level of a compressor is monitored and compared with a preset safety threshold value to generate an oil way adjusting instruction; starting an intelligent oil pump to convey oil according to the instruction, and performing closed-loop control on an electronic expansion valve by taking the superheat degree or the pressure value of an evaporator outlet as a feedback signal; summarizing data of the execution mechanism and the sensor and feeding back to the central controller to form a closed loop; according to the invention, multi-temperature-zone coordinated regulation and control are realized, the refrigeration efficiency and the equipment safety are improved, and the energy consumption is reduced.

The invention provides a triangular circulation heat management system and method for an automobile air conditioner. The system comprises a host system, a condensation system and a compression system. The main machine system comprises an air conditioner main machine with an evaporator, and the evaporator evaporates condensate water in the main machine system into water vapor. The condensing system comprises a condenser, one end of the condensing system is communicated with the host system through a pipeline, and the condensing system condenses water vapor into liquid water; the compression system comprises a compressor, the compression system communicates with the main machine system and the condensation system through pipelines, and the compressor provides heat for the evaporator. A first electronic expansion valve is arranged between the main machine system and the condensation system, a second electronic expansion valve is arranged between the main machine system and the compression system, the two ends of the compression system are connected through a third electronic expansion valve, and when the third electronic expansion valve is opened, the two ends of the compression system are directly communicated. The triangular circulation heat management system of the automobile air conditioner can solve the problem that peculiar smell is generated when the air conditioner is started in the prior art.

The utility model provides an electronic expansion valve which comprises a first connecting pipe, a silencing part, a valve seat part and an adapting part, the valve seat part and the adapting part are connected with each other, the adapting part is respectively connected with the valve seat part and the first connecting pipe, the adapting part is provided with a containing cavity, and the silencing part is installed in the containing cavity in a limited mode. By the adoption of the scheme, the furnace welding object of the first connecting pipe is converted from the valve seat part to the switching part through the switching part, when the switching part and the first connecting pipe are subjected to furnace welding, the silencing part located in the containing cavity is separated from the first connecting pipe through the switching part, the first connecting pipe does not directly abut against the silencing part, welding flux generated during furnace welding cannot permeate into the silencing part, and the silencing effect is good. And the noise reduction effect of the noise reduction part and the flow capacity of the electronic expansion valve are ensured. And on the other hand, independent off-line installation of the switching part and the silencing part can be achieved, the production takt is reduced, part standardization is improved, the falling risk in the part turnover process is avoided, and the machining and installation efficiency of the electronic expansion valve is improved.

According to the air conditioner partition self-cleaning control method and the air conditioner, the windward side of an indoor heat exchanger is divided into a plurality of to-be-cleaned areas, and a wind shielding structure is used for shielding or exposing any to-be-cleaned area; in the subarea self-cleaning mode, executing m times of micro-frost rinsing process for any to-be-cleaned area; the micro-frost rinsing process comprises the following steps that refrigeration operation is conducted, a compressor operates, an outer fan rotates, an inner fan rotates, the opening degree of an electronic expansion valve is the set frosting opening degree, a wind shielding structure acts to shield a to-be-cleaned area, and the to-be-cleaned area starts to frost; when the frosting ending condition is met, the opening degree of the electronic expansion valve is increased to the set defrosting opening degree or / and the outer fan stops rotating or / and the air blocking structure acts to expose the to-be-cleaned area, and defrosting is started in the to-be-cleaned area; when the defrosting ending condition is met, it is judged that defrosting of the to-be-cleaned area is completed; the technical problem that in the prior art, the refrigeration requirement of a user cannot be met during self-cleaning of an indoor heat exchanger is solved.

The invention provides a low-temperature heat pump liquid impact prevention and supercooling degree strengthening control method based on dual-mode self-adaptive regulation and control, which comprises the following steps: monitoring the bottom temperature of a gas-liquid separator and the change rate of the temperature, and controlling the supercooling degree of the gas-liquid separator on the basis of the difference value between the temperature and a preset safety critical temperature and the difference value between the change rate and a preset minimum temperature rise rate, constructing a liquid impact risk index; based on the liquid impact risk index, the pulse power excitation intensity is calculated, the number of opened spraying channels is selected according to the pulse power excitation intensity, the pulse duty ratio of each channel is adjusted, the high-temperature gas-state refrigerant is controlled to be injected into the bottom of the gas-liquid separator, and the liquid-state refrigerant is driven to evaporate; generating a mode switching score, and generating a mode switching signal when the mode switching score exceeds a mode switching threshold value and the temperature of the gas-liquid separator reaches a safety lower limit; and according to the mode switching signal, a supercooling degree strengthening mode is switched, and the opening degree of an economizer branch electronic expansion valve is adjusted according to the deviation between the current supercooling degree and the target supercooling degree.

The utility model provides a valve seat structure and an electronic expansion valve, the valve seat structure comprises a valve seat part and a switching part, the switching part and the valve seat part are respectively used for switching a first connecting pipe and a second connecting pipe, the valve seat part is provided with a limiting cavity, and an opening of the limiting cavity is located on the bottom wall of the valve seat part; at least part of the switching part is arranged in the limiting cavity in a penetrating mode, and the switching part and the valve seat part form an annular welding seam at the opening of the limiting cavity. According to the technical scheme, furnace welding switching of the first connecting pipe is achieved through the switching part, the welding position of the switching part and the valve seat part is limited to the bottom of the valve seat part, and the situation that when the welding position is located on the side of the valve seat part, laser welding and other welding are prone to being interfered by the second connecting pipe, and therefore welding is not facilitated is avoided; welding of operators and realizability of corresponding welding equipment are facilitated, and convenience and reliability of welding are improved.

A thermal management system (100), comprising: a first subsystem, an outlet of a compressor (10) being connected to a first refrigerant branch (11), a second refrigerant branch (12) and a third refrigerant branch (13) being selectively connected in parallel and respectively connected between the first refrigerant branch (11) and an inlet of the compressor (10), a fourth refrigerant branch (14) being connected to the outlet of the compressor (10) and the inlet of the compressor (10), the second refrigerant branch (12) being provided with a first electronic expansion valve (121), and the fourth refrigerant branch (14) being provided with a third electronic expansion valve (141); and a second subsystem, a first cooling liquid branch (21) exchanging heat with the first refrigerant branch (11), a second cooling liquid branch (22) exchanging heat with the third refrigerant branch (13), and in a heating mode, the first electronic expansion valve (121) and the third electronic expansion valve (141) being turned on. The system can effectively reduce costs. Also disclosed is a vehicle (1000).

The invention is suitable for the technical field of electric vehicle thermal management, and provides an electric vehicle thermal management system based on a refrigerant four-way valve, which comprises a refrigerant loop and a cooling liquid loop. The refrigerant loop comprises a refrigerant four-way valve, an electric compressor, a first plate heat exchanger, an electronic expansion valve, a second plate heat exchanger and a gas-liquid separator; the cooling liquid loop comprises a first plate heat exchanger, a second plate heat exchanger, a first water pump, a second water pump, a power battery water pump, a proportional three-way valve, an air blower, a third heat exchanger, an air PTC, an electric driver, a low-temperature radiator and an expansion kettle. According to the system, a single refrigerant four-way valve is introduced to transform a refrigerant loop of a conventional indirect heat pump technology, and a single proportional three-way valve and a cooling liquid loop are superposed to carry out innovative fusion design; the cooling liquid loop is greatly simplified compared with a conventional electric vehicle thermal management system framework, and meanwhile the performance requirement of the electric vehicle thermal management system is met.

The invention relates to the field of battery cooling equipment, in particular to a V-shaped fin liquid cooling system which comprises a liquid cooling plate, battery packs, cooling modules and heating modules, the upper surface of the liquid cooling plate is fixedly connected with the battery packs at equal intervals, and the cooling modules and the heating modules are arranged in the battery packs. A liquid inlet is formed in the outer wall surface of one end of the liquid cooling plate in a penetrating mode, a liquid outlet is formed in the outer wall of the end, away from the liquid inlet, of the liquid cooling plate in a penetrating mode, a plurality of rectangular straight flow channels are formed in the inner bottom wall of the liquid cooling plate, and the problem that a conventional liquid cooling plate cannot meet the high-discharge-rate heat dissipation requirement of a battery pack is solved; meanwhile, the power consumption of the battery pack is reduced, and electronic expansion valves of the cooling module and the heating module are controlled. The working temperature of the battery can be dynamically controlled within a proper working temperature range, when the temperature of the battery pack is proper, the thermal management system is closed, the power consumption of the battery pack is reduced by adopting natural cooling, and dynamic balance is realized.

The invention relates to the technical field of new energy automobile heat management, and belongs to an indirect heat pump heat management system for a new energy automobile. Battery outlet water and warm core outlet water are converged and then shunted through a waterway integration mode of a five-way valve and a proportional three-way valve, and the flow is distributed through the proportional three-way valve; the mixed water enters the battery to control the water inlet temperature of the battery, so that a water-water heat exchanger can be saved, and the effects of reducing cost and improving efficiency are achieved; on the aspect of the agent side, a large-diameter electronic expansion valve is arranged at an outlet of the water-cooling condenser, the internal flow and state of the water-cooling condenser are actively controlled by adjusting the opening degree of the large-diameter electronic expansion valve, the supercooling degree can be increased, the superheat degree can be restrained, the heat exchange capacity and the accurate control capacity can be enhanced, and heating and dehumidification outlet air temperature control in spring and autumn can be better achieved.

The invention relates to the technical field of automobile heat management, in particular to a multi-loop integrated heat management system and method for an electric automobile. Comprising a first electronic water pump, a second electronic water pump, a refrigerating device, a first temperature sensor, a second temperature sensor, a pressure sensor, a third temperature sensor, a fourth temperature sensor, a fifth temperature sensor, a first pressure temperature sensor, a second pressure temperature sensor, a first electronic expansion valve, a second electronic expansion valve, an evaporator, a fan and a compressor. According to the system, on the basis of an existing whole vehicle air conditioning system, an air-cooled condenser is replaced with the water-cooled condenser, a three-way valve, an integrated battery, the motor, the controller of the motor and a passenger compartment heat management system are removed, the motor is comprehensively utilized for preheating, the energy utilization rate is increased, and the energy consumption is reduced. The endurance mileage of the whole vehicle is improved, and the complexity of the system is reduced.

The utility model relates to the field of cold and heat pump units, in particular to a multifunctional efficient defrosting evaporation cold and heat pump unit which comprises a compressor, and an outlet of the compressor is respectively connected with an inlet of a shell and tube heat exchanger and an inlet of an evaporation cold heat exchanger through a four-way reversing valve. An outlet of the evaporation cold heat exchanger is connected with an inlet of the compressor and an outlet of the shell-tube heat exchanger through electronic expansion valves. An outlet of the shell-tube heat exchanger is connected with an inlet of the compressor and the fin type heat exchanger set through the electronic expansion valve. The fin type heat exchanger set comprises at least two sets of heat exchange channels which are mutually independent, each heat exchange channel is formed by connecting a three-way valve, a fin type heat exchanger and a one-way valve in series, and the three-way valve is connected with an inlet and an outlet of the compressor. The utility model provides a multifunctional efficient defrosting evaporation cold and heat pump unit, which can realize three functions of efficient refrigeration, heating and continuous defrosting while heating.