13results about How to "Avoid excessive temperature rise" patented technology

The invention discloses a dual-refrigeration heat management method and device for an electric vehicle, and relates to the technical field of heat management.The dual-refrigeration heat management method for the electric vehicle comprises the following steps that the temperature of a passenger compartment evaporator is obtained; comparing the temperature of the passenger compartment evaporator with a temperature threshold; according to the relation between the temperature of the passenger compartment evaporator and the temperature threshold value, the temperature and / or flow of battery pack cooling liquid is adjusted, then the refrigerating capacity of the battery pack is adjusted, the refrigerating capacity is increased by adjusting the rotating speed of a compressor in advance, and meanwhile an electronic expansion valve is adjusted according to the current water temperature and the target water temperature to ensure that the battery pack can obtain enough refrigerating capacity; the refrigerating effect of a passenger compartment is met, meanwhile, temperature rise of the power battery in the running and charging process is effectively controlled, excessive temperature rise in the initial charging stage of the battery is avoided, the safety of the battery is improved, the service life is prolonged, and the charging efficiency is improved.

This invention discloses a control method for HC injection, belonging to the field of engine aftertreatment technology. It addresses the technical problems of DPF carrier damage and failure, difficulty in temperature rise, or white smoke emission caused by high temperatures during vehicle operation due to complex vehicle conditions. The method involves: obtaining the engine's actual speed and load; querying the maximum HC injection MAP table based on the actual speed and load to obtain the first HC injection flow rate; obtaining the engine's actual throttle opening change rate; querying the throttle opening change rate correction MAP table based on the actual throttle opening change rate to obtain the throttle opening change rate correction coefficient; correcting the first HC injection flow rate based on the throttle opening change rate correction coefficient to obtain the second HC injection flow rate; selecting the minimum value among the first HC injection flow rate, the second HC injection flow rate, and the actual required injection quantity as the target injection flow rate; and controlling the engine to perform HC injection based on the target injection flow rate.

The application discloses a kind of electric pressure cooker abnormal cooking protection method and related components, it is related to household appliance control technical field, first determine the initial temperature of food to be cooked after electric pressure cooker starts, then according to initial temperature adjustment electric pressure cooker cooking protection duration, and initial temperature and cooking protection duration are negatively correlated.Determine cooking protection duration after control electric pressure cooker to first preset power starts heating, when the actual temperature of the bottom of electric pressure cooker reaches cooking protection duration and target temperature is still not reached during heating duration, it is proved that food to be cooked belongs to not easy to heat food, so the power of electric pressure cooker is reduced to second preset working power, to avoid the problem that electric pressure cooker is constantly increased in power eventually leading to electric pressure cooker temperature rise too high because of tardy reach cooking setting temperature.

The utility model discloses a safety power distribution device integrating power-off protection and circuit on-off control functions, which comprises a power-off protection switch, a circuit on-off control switch and an outer shell, the power-off protection switch and the circuit on-off control switch are both arranged in the outer shell and are connected in series, two access ends are arranged on the outer shell, and the two access ends are connected with the circuit on-off control switch. The two access ends are used for accessing a load loop, the power-off protection switch is used for cutting off the load loop with short circuit or abnormal current, and the circuit on-off control switch is used for controlling the load loop to be switched on or switched off; the power-off protection switch adopts a firework type switch; the circuit on-off control switch comprises a vacuum arc-extinguishing chamber and a driving mechanism, and the driving mechanism is used for driving the vacuum arc-extinguishing chamber to perform opening and closing actions. According to the utility model, the power-on and power-off requirements under normal working conditions can be met, the requirements of quick response and accurate breaking circuit under abnormal conditions can be met, the problem of function repetition can be avoided, the installation is simple, and the occupied space is small.

The utility model relates to the technical field of kitchen appliances, in particular to an electric cooker. The electric cooker comprises a heating disc and a panel, and the heating disc is integrally provided with a mounting ring in the circumferential direction. A mounting hole is formed in the panel, a limiting ring is arranged on the panel in the circumferential direction of the mounting hole, the heating disc penetrates through the mounting hole, the mounting ring is supported on the panel, the side wall of the limiting ring is located between the mounting ring and the heating disc, and the horizontal distance between the limiting ring and the mounting ring is smaller than that between the limiting ring and the heating disc. The limiting ring is closer to the mounting ring and far away from the heating disc, and the temperature of the mounting ring is lower than that of the heating disc, so that the heat transfer amount from the heating disc to the limiting ring is reduced, the heat transfer amount from the limiting ring to the panel is further reduced, and the temperature rise of the panel is effectively reduced. Meanwhile, even if the heating disc is not installed in place due to dimensional tolerance and installation errors, the heating disc cannot make direct contact with the limiting ring, the situation that the heating disc directly transfers heat to the panel through the limiting ring is avoided, and therefore the situation that the temperature of the panel is too high is avoided.

The invention belongs to the technical field of wind power equipment machining, and provides a circumferential weld joint welding heat preservation device and a welding method in wind power equipment machining. The heat preservation shell comprises a first shell body and a second shell body which are connected with each other. A first connecting piece is arranged at the end part of the first shell, and a second connecting piece is arranged at the end part of the second shell; a first pressure release valve is arranged on the first shell, and a second pressure release valve is arranged on the second shell; during welding, the first shell and the second shell are separated at the joint, a welding gun is inserted into the joint of the first shell and the second shell for welding, welding of the welding gun and closing of the first shell and the second shell after welding are met through closing of the first shell and the second shell at the joint, and the purpose of continuous heat preservation is achieved; by means of the heat preservation shell, heat generated by welding is used for directly conducting heat preservation on a welding seam, the heating link is replaced, on the basis that resources and cost are saved, a good working environment is provided, and the machining risk is reduced.

The utility model relates to a high-voltage measurement and protection device of an electric power system, in particular to a supporting type large creepage distance current transformer. Comprising an insulator and a coil device body sealed in the insulator, primary and secondary wiring terminals are arranged at the top and bottom of the insulator, umbrella skirts are arranged on the outer surface of the insulator, and front and rear side voltage-sharing nets are arranged at the lower end in the insulator; the coil device body comprises an iron core, a secondary winding and a primary winding, wherein the secondary winding and the primary winding are wound on the iron core from inside to outside. An insulating layer and a protective layer are wrapped on the iron core. The secondary winding is supported by a secondary winding support, an insulating paperboard and two layers of polyester films are arranged at the two ends of the secondary winding in a padded mode, a polyester film is arranged between secondary wire layers of the secondary winding in a half-stacked mode, an insulating layer, a shielding layer and a protective layer are wrapped on the outer side of the secondary winding, and a polyester belt, a polyurethane plate and semi-conductive crepe paper are wrapped on the outer side of the primary winding. The utility model has the advantages of small volume, low cost, large surface creepage distance, high dynamic thermal stable current, high metering precision, moisture resistance, condensation resistance and electricity larceny prevention.

The utility model discloses an overflow type battery assembly. The overflow type battery assembly comprises a bottom plate and a battery module arranged on the bottom plate, the battery module comprises an end pressing plate and a battery pack, the battery pack comprises a plurality of single batteries, and the single batteries are arranged in n columns in the X direction and arranged in m rows in the Y direction; an inter-row gap channel is arranged between every two adjacent rows of battery monomers; an inter-column gap channel is arranged between two adjacent columns of battery monomers; the two end pressing plates are respectively positioned on the front end surface and the rear end surface, vertical to the Y direction, of the battery pack; the two end pressing plates are used for sealing the two ends of the inter-row gap channel, sealing strips are arranged at the two ends of the inter-row gap channel respectively, and the inter-row gap channel and the inter-row gap channel with the two closed ends form a temperature control channel used for circulation of a temperature control medium. The side wall or the upper end of the temperature control channel is provided with an overflow liquid outlet, the bottom plate is provided with a liquid inlet and a liquid inlet flow dividing channel used for distributing temperature control media to the line gap channels and the column gap channels, and the liquid inlet is communicated with the liquid inlet flow dividing channel.

This application discloses a transmission-type high-power laser emitting system, relating to the technical field of high-power laser systems. The system's laser incident end is connected to a high-power fiber laser for receiving the laser beam, and its laser emitting end is used to focus the laser beam to a target location. The system includes a laser emitting mirror group, an emitting mirror tube, a focusing motor, and a control circuit board. The laser emitting mirror group is disposed inside the emitting mirror tube and includes a laser emitting eyepiece group and a laser emitting objective lens group. The laser emitting eyepiece group is located at the incident end, and the laser emitting objective lens group is located at the laser emitting end. The focusing motor is used to move the laser emitting eyepiece group through a mechanical connector to achieve system focusing. The control circuit board is used to control the focusing motor to rotate and focus according to a focusing signal. The technical solution of this application has a simple system structure, relatively high temperature stability, and can achieve directional focusing of a high-power laser beam over a long distance.

This invention discloses a liquid-cooled circulating cooling battery swapping cabinet for liquid-cooled batteries, relating to the technical field of battery thermal management and battery swapping equipment. The invention includes: a guide slide installed inside the cabinet; a battery swapping chamber slidably connected to the inner wall of the guide slide; an elastic telescopic rod fixedly connected to the inner wall of the cabinet; an electric telescopic rod fixedly connected to the left side of the battery swapping chamber; and a heat dissipation mechanism for ventilation and heat dissipation provided on the inner wall of the battery swapping chamber. This invention can cool the battery during the battery swapping process of new energy liquid-cooled batteries, avoiding excessively high battery temperatures and low swapping efficiency due to long swapping times. The cooling medium circulates in a closed loop within the tank, significantly increasing the heat exchange area and thermal conductivity between the battery and the cooling medium, preventing localized high temperatures and rapid temperature rise, and improving charging safety and battery lifespan.

This invention relates to the field of integrated design of power electronic converters and magnetic components, and discloses an application method of three-phase PFC integrated magnetic technology, including: configuring excitation windings in the independent magnetic circuit branches of the magnetic core so that the excitation currents of each phase differ by a phase angle of 120° on the time axis; establishing a magnetic flux balance path in the common area inside the magnetic core, and forming a virtual magnetic neutral point with equal magnetic potential by utilizing the spatial vector synthesis and instantaneous polarity cancellation of the fundamental magnetic flux; setting a non-uniform magnetoresistive layer between the side column and the middle column to establish a gradient magnetoresistive distribution field, guiding the high-frequency ripple magnetic flux to be constrained within a specific leakage magnetic path, and orthogonally distributed with the main energy conversion path in electromagnetic space. This invention achieves electromagnetic decoupling of the inductance parameters of each phase of the integrated magnetic component by constructing a virtual magnetopotential zero point and orthogonal magnetic circuits, maintaining the independence of dynamic response, eliminating cross-phase parameter disturbances, and reducing the overall volume of the magnetic component.

The invention discloses a transmission-type high-power laser emission system, and relates to the technical field of high-power laser systems, a laser incident end of the system is connected with a high-power fiber laser and is used for accessing a laser beam, and a laser emergent end is used for converging the laser beam to a target position. The system comprises a laser emission lens group, an emission lens cone, a focusing motor and a control circuit board, the laser emission lens group is arranged in the emission lens cone and comprises a laser emission eyepiece group and a laser emission objective lens group, the laser emission eyepiece group is located at an incidence end, the laser emission objective lens group is located at a laser emission end, and the focusing motor is located in the laser emission lens cone. The focusing motor is used for moving the laser emission eyepiece group through the mechanical connecting piece to realize system focusing, and the control circuit board is used for controlling the focusing motor to rotate for focusing according to a focusing signal; according to the technical scheme, the system is simple in structure, the temperature stability is relatively high, and the long-distance light beam directivity convergence function of high-power laser can be achieved.

This invention relates to the field of gas desulfurization technology, specifically to a method for gas desulfurization. The method includes: combining feed gas and desulfurization gas to obtain a mixed feedstock, contacting it with a first oxygen-containing gas for a first oxidation; performing a first condensation and phase separation on the first oxidation product stream; subjecting the condensed gas stream to a second oxidation with a second oxygen-containing gas; performing a second condensation and phase separation on the second oxidation product stream; and combining a portion of the product gas as desulfurization gas with the feed gas to form a mixed feedstock. The first oxidation temperature is at least 5-80°C higher than the second oxidation temperature. This invention, through a two-stage oxidation-condensation phase separation process where the first oxidation temperature is higher than the second oxidation temperature, treats the mixed feedstock containing feed gas and desulfurization gas. This ensures that the process operates under constant pressure throughout the entire process and directly yields high-quality purified natural gas and sulfur, thereby reducing system investment and operating costs, resulting in significant economic and social benefits.