182 results about "Battery thermal management" patented technology

This invention relates to the field of air conditioning technology and discloses a low-noise, low-energy-consumption dual-compressor refrigeration system. It replaces a single high-power compressor with two low-power compressors, with the two low-power compressors having a higher capacity than a single high-power compressor. While maintaining the same power requirement, the system reduces its size and weight through a ring-shaped fixed weight-reduction method, further reducing compressor vibration and noise. Based on the actual low cooling / heating demand, the operating power of the two compressors is proportionally controlled to minimize energy consumption. Especially during battery thermal management, the low-power compressor provides power, further avoiding frequent compressor starts and reducing energy consumption during low-power operation, thus providing better energy efficiency for the entire vehicle. The evaporator is arranged on both sides of the condenser. With dual compressors, the air conditioning system is adjusted from a single circuit to two independent circuits, thus avoiding uneven refrigerant distribution and significant perceived temperature differences between the left and right sides.

The embodiment of the application discloses a battery thermal management method and device, equipment and a storage medium, the method comprises the following steps: in the case that the battery management system does not start the thermal management, the target parameter is used to predict the battery storage life gain of the vehicle starting the thermal management within the target time length and the additional loss power of the charging pile in the case that the vehicle starts the thermal management, the target parameter comprises at least one of the following: battery temperature, battery charge state, battery health state and charging time length, the battery storage life gain refers to the storage life saved by the thermal management for the battery; the first virtual resource corresponding to the battery storage life gain and the second virtual resource corresponding to the additional loss power are determined; in the case that the difference between the first virtual resource and the second virtual resource is greater than or equal to a preset threshold, the battery thermal management is started. Whether the battery thermal management needs to be started in the process of charging the vehicle can be more comprehensively, accurately and reasonably determined.

The present invention provides a battery thermal management system structure and battery pack that have a simple structure, precisely control the temperature around the cell to maintain it within an appropriate operating range, ensure the operating performance of the cell, and extend the lifespan of the cell. [Solution] The structure of the liquid cooling channel is such that a liquid cooling channel is provided within a direct cooling plate 110, and the direct cooling plate 110 is provided with a liquid supply port 410 and a liquid drain port 420, respectively, which communicate with the liquid cooling channel including a liquid supply line 430 and a liquid drain line 440, and the liquid supply port and liquid drain port are provided on the same side of the direct cooling plate, and the temperature control assembly includes a controller, a temperature sensor, a flow control valve 230 and a heating film, and the controller is signal-connected to the temperature sensor, the flow control valve and the heating film, respectively.

This invention discloses a method, apparatus, device, and storage medium for testing the charging gun insulation function of an electric vehicle. The method involves immersing the electric vehicle in a predetermined low-temperature environment and charging it to a preset SOC range, causing the temperature of the electric vehicle's power battery to drop below a predetermined low-temperature threshold. While maintaining a physical connection between the charging gun and the electric vehicle, the method monitors the temperature change of the power battery, the output parameters of the charging equipment, and the SOC value of the power battery. When the battery temperature drops to the predetermined low-temperature threshold, the charging gun insulation function is triggered, and key parameters during the function's operation are recorded. Based on the changes in key parameters and the SOC value, the energy source of the charging gun insulation function is determined. This comprehensively verifies the reliability of the function's triggering conditions, temperature control performance, and exit logic, ensuring the normal operation of the electric vehicle's battery thermal management function in low-temperature environments and improving the safety and user experience in cold climates.

This invention relates to the field of microgrid control and discloses a method for regulating a highway service area microgrid based on distributed photovoltaic energy storage. The method includes the following steps: First, traffic flow data is collected to construct a traffic-energy potential field model, mapping discrete vehicles to a continuous potential field to predict net power demand. Second, a kinetic-thermal entropy mapping is constructed using vehicle kinetic energy characteristics, and battery thermal management feedforward control is executed before load arrival. Simultaneously, variational mode decomposition parameters are adaptively adjusted according to the potential field gradient to decompose the power command into high-frequency and mid-to-low-frequency components. The high-frequency components are absorbed by supercapacitors, while the mid-to-low-frequency components are collaboratively distributed among battery packs based on a virtual complex impedance model constructed using health status and temperature. This invention achieves proactive defense against impact loads and refined lifespan extension of energy storage through traffic-energy cross-domain coupling, significantly improving the voltage rigidity and operational stability of the microgrid under extreme conditions.

The utility model relates to battery thermal management technical field especially relates to a composite cold plate structure for battery package, including the heat dissipation board one of horizontal arrangement and the vertical arrangement of multiple groups of heat dissipation board two, the heat dissipation board one is composed of flow channel board one and flat plate, and the flow channel groove one is formed in flow channel board one through stamping, and the heat dissipation board two is composed of two groups of symmetrically arranged flow channel board two, and the flow channel groove two is formed in flow channel board two through stamping, the composite cold plate structure for battery package has solved the local high temperature gathering problem that traditional cold plate caused by the insufficient flow of intermediate area, has reduced the risk of overheat of battery cell, has guaranteed the work safety of battery package, has realized the optimized distribution of heat dissipation resource simultaneously, has improved the energy utilization efficiency of overall heat dissipation system, and the temperature gradient of battery cell in battery package has been significantly reduced, the overall temperature uniformity has been effectively improved, and the adverse effect of the too big temperature difference to the cycle life and consistency of battery cell has been avoided.

The present application relates to the technical field of battery thermal management, and particularly relates to a topological optimization structure cold plate of a battery non-uniform heat source, a design method and a battery pack. The specific design method is: a battery non-uniform heat source model and a two-dimensional model of a cold plate structure are established; a flow channel topological optimization is carried out with heat exchange uniformity, heat exchange efficiency and flow energy dissipation as objective functions, and a three-dimensional topological optimization flow channel model is established; a battery pack packaging model is established; CFD simulation calculation is carried out, and the weight ratio of heat exchange uniformity, heat exchange efficiency and flow energy dissipation is adjusted until the battery pack packaging model meets the preset condition, and a topological optimization cold plate structure is obtained. The present application is aimed at the model construction of a non-uniform heat source of a fixed object of a battery; a method of topological optimization structure design is used for the design of a battery pack cold plate to constrain the maximum temperature rise and temperature difference; and the problem of inconsistency of battery temperature existing in the existing cold plate design method and certain error existing in the actual application process is solved.

This utility model relates to the field of battery thermal management technology and discloses a temperature control component for intelligently regulating the reaction rate of lithium iron phosphate battery materials. The component includes a temperature controller: a hollow block is fixedly connected to one end of the temperature controller; a protective plate is slidably connected inside the hollow block; an adjustment groove is provided at one end of the hollow block; a cavity block is fixedly connected to one end of the protective plate; a U-shaped block is fixedly connected to one end of the hollow block; and a snap-fit ​​groove is provided at one end of the U-shaped block. This temperature control component for intelligently regulating the reaction rate of lithium iron phosphate battery materials allows the protective plate to slide inside the hollow block by pulling the cavity block upwards until it completely blocks the control button at one end of the temperature controller. Then, through the cooperation of a storage spring and the snap-fit ​​block, the snap-fit ​​block can be inserted into the snap-fit ​​groove to fix the position of the protective plate, thereby preventing accidental button triggering due to external impact and further improving the safety and stability of the temperature control component.

The application relates to the technical field of battery thermal management, and discloses a multifunctional direct cooling system. The direct cooling system comprises a compressor, a fan, a condenser, a first control branch, a second control branch, a direct cooling plate, a refrigeration aluminum pipe coil and a dehumidification evaporator; the compressor is connected with the input end of the condenser, the fan is arranged on one side of the condenser, the input ends of the first control branch and the second control branch are connected with the output end of the condenser; the output end of the first control branch is connected with one end of the direct cooling plate, and the output end of the second control branch is connected with the refrigeration aluminum pipe coil and the dehumidification evaporator; the other ends of the direct cooling plate, the refrigeration aluminum pipe coil and the dehumidification evaporator are connected with the compressor through pipelines. The direct cooling system can realize battery separate cooling, refrigeration separate operation, dehumidification separate operation or combined operation of the three according to needs by controlling the opening degree or on-off of the first control branch and the second control branch, the shortcomings of single devices are solved, and the overall performance and service life of the system are improved.

This application discloses a thermal management system and energy storage device, belonging to the field of battery thermal management. The thermal management system includes: a first interface, a second interface, a pump body, a heat exchange unit, a bypass branch, a heating device, and a regulating device. The first interface and the second interface are respectively used to connect to both ends of a load; the first port of the pump body is connected to the first interface; the two ends of the first path of the heat exchange unit are respectively connected to the second port and the second interface of the pump body, and the two ends of the second path of the heat exchange unit are respectively used to connect to both ends of a cooling unit; the bypass branch is connected in parallel with the first path of the heat exchange unit; the heating device is disposed in the bypass branch; at least one of the first path of the heat exchange unit and the bypass branch is provided with the regulating device. This application can reduce the pump head without affecting the heat exchange efficiency.

Thermal management device for an electric or hybrid motor vehicle comprising a thermal management circuit (1) within which a refrigerant is intended to circulate, said thermal management circuit (1) comprising a main loop (A) comprising, in the direction of refrigerant circulation, - a compressor (2), - a first heat exchanger (4), - an ejector (5) having a variable opening diameter and configured to be passable with little or no pressure loss at a so-called maximum opening, - a phase separation device (6) for the refrigerant, - a first expansion device (7), - a second heat exchanger (8) disposed downstream of the first expansion device (7), the thermal management circuit (1) further comprising a first bypass branch (B) connecting the compressor (2) to the first expansion device (7) and comprising a radiator (10),the thermal management circuit (1) comprising a second bypass branch (C) connecting the refrigerant outlet of the radiator (10) to the first heat exchanger (4), said second bypass branch (C) comprising a second expansion device (11). Abbreviated figure: Fig 1,

This invention provides a composite structure for battery thermal management and a method for optimizing battery target performance, belonging to the field of battery thermal management technology. The structure includes: a liquid cooling plate with built-in flow channels, its surface coated with a thermally conductive interface material; multiple arrayed heat pipes, the horizontal sections of which are attached to the upper surface of the liquid cooling plate and in contact with the bottom surface of the battery cell assembly; the vertical sections of which are attached to the large surface of the individual battery cells; coolant disposed within the heat pipes; a battery cell assembly comprising multiple parallel or series-connected battery cells, the bottom surface of each battery cell in contact with the horizontal sections of the arrayed heat pipes and the liquid cooling plate; and a thermal runaway barrier layer disposed between the large surfaces of adjacent battery cells. This invention can solve the inherent contradiction between heat dissipation and thermal insulation, as well as the technical problems of single heat dissipation paths or limited heat dissipation efficiency.

The present application relates to the technical field of new energy power battery thermal management materials, in particular to a co-extrusion film material for aerogel thermal insulation pad packaging, and discloses a co-extrusion film, a preparation process and application in new energy batteries, wherein the co-extrusion film is prepared from high-performance master batches through a co-extrusion blow molding process, the high-performance master batches are composed of seven-vinyl POSS single-grafted nylon 6 resin, modified expanded vermiculite with octadecenyl and DOPO groups on the surface, and dicumyl peroxide initiator, under the action of the dicumyl peroxide initiator, the vinyl on the POSS cage structure of the seven-vinyl POSS single-grafted nylon 6 resin and the octadecenyl on the surface of the modified expanded vermiculite occur free radical reaction to obtain the high-performance master batches. Through the synergistic modification strategy of double grafting and crosslinking, the present application realizes the synergistic improvement of flame retardation, heat resistance, barrier property and mechanical property, and solves the technical bottlenecks of aerogel packaging materials in high-temperature failure, weak interface bonding and processing performance deterioration.

Heat transfer compositions consisting essentially of effective amounts of cis-1-chloro-2,3,3-trifluoropropene (HFO-1233yd(Z)) and a base fluid, and applications thereof as at least a coolant fluid in electronic vehicle (EV) battery thermal management systems (BTMSs)

The application discloses a thermal runaway and explosion-proof protection device based on perfluorohexanone explosion suppression-flameless discharge combination, and belongs to the technical field of battery explosion prevention and battery thermal management. The application utilizes perfluorohexanone in the perfluorohexanone guide warehouse to perform thermal control and explosion suppression and flame retardation on a power battery. When the power battery has uneven temperature distribution or local temperature rises too fast, the vaporized perfluorohexanone is used to quickly absorb the heat of the power battery, so that the occurrence of thermal runaway is inhibited. When the power battery catches fire or explodes, the perfluorohexanone guide warehouse is damaged by high temperature or impact force, the outflowing perfluorohexanone is used to quickly absorb heat and timely extinguish the fire and suppress the explosion of the power battery, and the pressure is discharged to the buffer valve through the explosion-proof discharge valve to provide a buffer for the impact force. When the pressure after explosion suppression and buffering is still greater than the pressure bearing capacity of the pressure relief sheet, the pressure is extinguished by the fire barrier core, so that the secondary damage of the automobile caused by the jet fire is prevented.

The application provides a battery thermal management device cooperating with quantum dots and electromagnetic induction, and relates to the field of battery thermal management.The traditional battery temperature regulation technology can be divided into two categories: active and passive.The passive heat dissipation is achieved by heat conduction and storage through heat-conducting materials, phase-change materials and heat sinks, and although the structure is simple, the temperature control capacity is limited.The active heat dissipation includes air cooling, liquid cooling and refrigerant cooling, etc.The air cooling system has relatively low heat dissipation efficiency, and is suitable for the problem of devices with small battery power.The battery thermal management device is a double-layer thermal management architecture.The application realizes the accurate monitoring of the local temperature of the battery by the quantum dots and the differential cooling of different regions of the battery by the magnetic fluid driven by electromagnetic induction through the reasonable design of the double-layer thermal management architecture.The two-layer systems work in coordination through an intelligent controller, mutual interference is avoided, and the effect of the battery thermal management in precise temperature control and heat regulation is greatly enhanced.

This application relates to a battery thermal management control method, device, vehicle, equipment, and medium, used to achieve personalized heating of the vehicle under low-temperature wake-up conditions based on user driving habits, thereby improving the vehicle's driving range in low-temperature environments. The battery thermal management control method includes: identifying the driver's driving style and speed range on the current driving route based on user profile data and the vehicle's current driving route; determining the target heating power and target recovery power of the battery based on the driver's driving style and speed range; obtaining the battery's current maximum recovery power based on the battery's real-time remaining charge and real-time temperature; and heating the battery at the target heating power when the battery's current maximum recovery power is lower than the target recovery power, until the battery's current maximum recovery power equals or exceeds the target recovery power.

The application discloses a battery box for immersion direct cooling, and belongs to the technical field of battery thermal management. The battery box comprises a box body and a cover plate, and forms a closed chamber. The bottom plate of the box body is provided with a module support frame, so that the battery module is kept at a gap of 0.5-2.5 cm with the bottom plate and a gap of 1-5 cm with the side wall. At least one wall of the box body is provided with an arc-shaped flow uniforming plate, the included angle between the tangent of the edge of the flow uniforming plate and the reference plane is 5-37 degrees, and the height of the flow uniforming plate is 1 / 3-1 times the height of the battery cell. The angle of the flow uniforming plate is adjustable, the 0-90-degree adjustment is realized through a hinged mechanism with an arc-shaped sliding groove, the bottom spring device makes the inclination angle change automatically with the flow rate, and the angle of the base can be automatically adjusted according to the preset judgment rule based on the temperature rise rate and the temperature difference of the thermocouple transmission. The box body is provided with a safety pressure relief valve. The liquid inlet is provided on the opposite wall of the box body to form liquid hedging, the liquid outlet is provided on the cover plate, and the connecting direction of the liquid inlet is the same as the thickness direction of the battery cell. The box body is subjected to 1.5 times working pressure hydrostatic pressure test and helium mass spectrometry leak detection verification, and the leakage rate is less than or equal to 1*10-3 Pa*m3 / s. The application can significantly improve the battery temperature consistency, reduce the temperature rise, prolong the battery life and improve the system safety under the condition of low pump consumption.

The utility model discloses a kind of vehicle-mounted air conditioner CCU installation platform, belong to vehicle-mounted air conditioner technical field, including signal input layer, main control unit, output control unit, external interactive layer and battery management system, main control unit is also provided with battery thermal management control module;This platform can improve battery performance and life, through accurate, timely preheating and cooling, so that power battery always works in optimum temperature interval, significantly improves charge-discharge efficiency, prolongs battery service life.

The embodiment of the application provides a liquid cooling flow channel reconstruction method and system under a high-density battery cell array, and belongs to the technical field of battery thermal management. The method comprises the following steps: constructing a liquid cooling flow channel structure comprising a plurality of main cooling branches and at least two controllable branch channels; acquiring real-time temperature data of each battery cell module in a set period, and determining temperature variation based on the temperature data; determining a hot spot area of the battery cell module area based on the temperature variation and a preset thermal distribution judgment rule; controlling the electric control adjusting element according to the position of the hot spot area and the temperature variation, and adjusting the flow distribution of the cooling liquid in the controllable branch channel; and based on the flow distribution result, performing dynamic reconstruction of the liquid cooling flow channel structure. The scheme of the application realizes dynamic regulation and control of the cooling flow and adaptive reconstruction of the flow channel structure under the high-density battery cell array, thereby effectively improving the local thermal anomaly response capability and the overall thermal management efficiency.

The application discloses an integrated vehicle thermal management system, comprising: an air conditioner assembly, comprising: a main pipeline, wherein a compressor, an indoor heat exchanger and a plate heat exchanger are arranged on the main pipeline; a battery thermal management assembly for refrigerating and heating a battery box, having a first connecting pipeline connected with the plate heat exchanger, and a first water tank and a first water pump are further arranged on the first connecting pipeline; and a motor thermal management assembly for refrigerating and heating a motor, having a second connecting pipeline connected with the main pipeline. The application has the advantages that refrigeration and heating of a passenger area, a battery and a motor in a vehicle are integrated, space occupation is reduced, vehicle cost is lowered, energy utilization efficiency is improved, the air conditioner assembly, the battery thermal management assembly and the motor thermal management assembly are integrated and designed, refrigeration and heating resources are shared and optimally configured, and energy waste and equipment redundancy caused by a traditional independent system are avoided.

This invention discloses a nested serpentine channel liquid cooling plate and its battery thermal management system, belonging to the field of energy storage battery thermal management technology. The liquid cooling plate has a double-inlet, double-outlet serpentine flow channel inside, forming two parallel coolant flow paths to shorten the heat transfer path and improve temperature uniformity. A battery thermal management system includes a battery module composed of multiple square batteries and at least one liquid cooling plate, which is nested between the battery cells. Preferably, for a module composed of 20 square batteries, only three liquid cooling plates are used, respectively arranged on both sides and in the middle of the module, achieving a compact configuration of "one cooling plate cooling two battery cells". More preferably, the liquid cooling plate adopts an inlet / outlet direction of left-up-right-down and right-up-left-down, with a coolant mass flow rate of 1 g / s and an inlet temperature of 25°C. Experimental results show that at an ambient temperature of 45℃ and a discharge rate of 2C, the battery module's highest temperature is 28.75℃, the maximum temperature difference is 2.17℃, the voltage drop is 229.31Pa, and the comprehensive performance evaluation index PEC reaches 4.02. This invention significantly reduces system complexity, manufacturing costs, and flow resistance while ensuring efficient heat dissipation and excellent temperature uniformity, making it suitable for large-scale lithium iron phosphate energy storage modules.

This application provides a battery thermal management method and device based on a dynamic aerogel thermal insulation pad. The battery thermal management method can monitor the thermal state information inside the battery and the temperature-sensitive aerogel substrate in real time through an embedded sensing network, and input the monitored thermal state information into a physical information neural network model deployed in the intelligent control unit. The physical information neural network model predicts the temperature field and heat flow field inside the battery and outputs coordinated control commands for the temperature-sensitive aerogel substrate and the external thermal management system. In this way, by dynamically coordinating the temperature-sensitive aerogel substrate and the external thermal management system, the dynamic aerogel thermal insulation pad is transformed from a passive thermal insulation material into a "temperature-adaptive thermal management intelligent medium" for the battery, fundamentally solving the technical contradiction between the static material characteristics of existing aerogel thermal insulation pads and the dynamic thermal management requirements of batteries.

This invention discloses a method and system for optimizing the overall performance of battery packs using hybrid thermal management, relating to the field of battery pack thermal management technology. It involves constructing a hybrid battery thermal management geometric model, attaching a top liquid cooling plate to the upper surface of the battery pack, and reducing the distance between the battery pack and the sidewall of the outer casing. Based on the hybrid battery thermal management geometric model, a heat control model for the battery pack is generated. Cooling simulation is performed based on the heat control model to generate optimal liquid cooling flow rate and optimal air cooling flow rate. The distance of the inlet guide plate is optimized based on the optimal air cooling flow rate to generate an optimal guide plate distance. Based on the optimal liquid cooling flow rate, optimal air cooling flow rate, optimal guide plate distance, and the heat control model, a comprehensive performance optimization scheme for the battery pack is generated. This invention reduces the search space by identifying the thermal response inertia zones of liquid cooling and air cooling, thereby reducing the computational burden while ensuring temperature and temperature difference constraints, and improving adaptability to varying operating conditions.

The utility model relates to battery technical field discloses integrated heat dissipation air duct battery heat management system, including the box body for protection, two cavities are opened in the box body, two the battery pack is placed in the cavity, install the ventilation assembly for heat dissipation to the battery pack in the box body, two the cavity inner wall all install the conduction assembly for improving the heat dissipation efficiency. The utility model discloses through the filterd outside gas of air exchanger fan drive forms the directional airflow of bottom air inlet, realizes the efficient heat dissipation to the battery pack, can make the limiting piece from the limiting groove removal through the rotation knob, makes the dust screen maintenance convenient, guarantees the sustained operation of heat dissipation system, utilizes the cavity heat conduction fin and heat conduction gasket to increase the contact area and optimize heat conduction simultaneously, cooperates forced air cooling and forms the collaborative heat dissipation mechanism, significantly improves the battery pack service life and system maintainability.

The present disclosure relates to a battery thermal management method and device, relates to the technical field of batteries, and is applied to a power generation system of a solid oxide fuel cell. The power generation system comprises an electric pile, a cathode heater, and a heat exchanger. The gas outlet of the cathode heater is connected with the cathode gas inlet of the electric pile. The gas outlet of the cold side of the heat exchanger is connected with the cathode input end of the electric pile. The cathode gas outlet of the electric pile is connected with the gas inlet of the hot side of the heat exchanger. The method comprises the following steps: in the case that the external load of the electric pile changes, according to the output voltage and output current of the electric pile, the input gas flow of the cathode heater and the heat exchanger is controlled according to a first flow distribution ratio. According to the operating temperature of the electric pile, the input gas flow of the cathode heater and the heat exchanger is controlled according to a second flow distribution ratio. According to the second flow distribution ratio and an initial flow distribution ratio, the output gas temperature of the cathode heater is adjusted. The present disclosure can improve the power generation efficiency and safety performance of the solid oxide fuel cell.

This invention discloses a power battery thermal management method and thermal management system, specifically relating to the field of battery thermal management and cooling technology. This invention divides the battery pack into multiple zones, constructs a distributed monitoring network by combining the zone's real-time temperature, temperature change trends, and ambient temperature, corrects temperature deviations, and then categorizes the corrected real-time temperature into high-temperature, moderate-temperature, and low-temperature groups based on the corrected real-time temperature and the preset reference operating temperature range, achieving differentiated temperature control for each zone. Compared to the traditional "one-size-fits-all" whole-pack thermal management, this effectively solves the problem of uneven temperature caused by differences in spatial layout and heat dissipation boundaries within the battery pack.

The application relates to the fields of heat-insulating flame-retardant materials and battery thermal management, and discloses a preparation method and application of a fiber-reinforced composite foam material. Methyl methacrylate, methyl acrylate and hydroxyethyl methacrylate are dissolved in a solvent, a free radical initiator is added and heated to obtain a polymer solution, an organic base, a catalyst, a chain extender, a uniform foaming agent, an anti-aging agent and deionized water are sequentially added to obtain a mixed solution; basalt short-cut fibers treated by a silane coupling agent are added into the mixed solution and uniformly dispersed, and a foaming agent is added to seal an A solution; isocyanate is dissolved in a solvent to prepare a B solution; the A and B solutions are added into a pouring machine or a spraying system according to a proportioning ratio, a battery box top cover plate and a bottom plate are integrally formed through a pouring process, aluminum simulation battery cells are grouped, and the gaps between the groups are filled through a spraying process; the fiber-reinforced composite foam material with excellent flame-retardant heat-insulating, mechanical and thermal stability is obtained through room-temperature standing foaming, medium-temperature curing and high-temperature imidization treatment.

The application discloses an electric vehicle whole vehicle thermal management system, comprising: a heat pump module, a motor and a driving unit thermal management module, a battery thermal management module and a cabin thermal management module; a water-cooled condenser 5 is arranged in the heat pump module; a total circulating liquid loop is formed between the motor and the driving unit thermal management module, the battery thermal management module, the cabin thermal management module and the water-cooled condenser 5; a plurality of isolation valve bodies are arranged on the total circulating liquid loop, and are used for disconnecting and connecting between at least two of the motor and the driving unit thermal management module, the battery thermal management module, the cabin thermal management module and the water-cooled condenser 5. The application can comprehensively utilize the heat energy of the whole vehicle, reduce the battery power attenuation and improve the operation efficiency of the whole vehicle.

This invention discloses a low-cost, heat-insulating fiber-mica composite heat insulation board and its preparation process, relating to the interdisciplinary technical fields of polymer composite materials, inorganic non-metallic materials, and thermal management engineering of new energy vehicle power batteries. The process includes: mixing and pulping aluminosilicate fibers, aramid fibers, and cellulose fibers in a mass ratio of 8:1:1; adding fatty alcohol polyoxyethylene ether, mica sheets, and organosilicon resin emulsion to obtain mica fiber slurry; dehydrating the slurry to obtain a wet composite board; pressing at 20 MPa for 5 min; and drying at 105℃ for 15 min. The amount of mica sheets added is 0%~20% of the dry fiber slurry mass. This invention uses a conventional wet papermaking process, eliminating the need for supercritical drying or organic solvent replacement. The resulting heat insulation board has a tensile strength >1.73 MPa, a room-temperature dielectric breakdown strength ≥12 kV / mm, and a room-temperature thermal conductivity ≤0.050 W / m·K. The unit area cost is only 10%~20% of that of ceramic fiber aerogel felt, making it suitable for thermal barrier pads between cells in new energy vehicle power batteries.