36results about How to "Avoid serious problems with fever" patented technology

The invention belongs to the technical field of frequency converters and provides a four-quadrant frequency converter. According to the four-quadrant frequency converter, a frequency converter is arranged between a power grid and an induction motor; an energy feedback unit is arranged at a direct current (DC) busbar side of the frequency converter; a negative pole end DC- of a direct current busbar on the frequency converter is electrically connected with the DC- of the energy feedback unit; the DC+ on the frequency converter is electrically connected with DC+ of the energy feedback unit; three-phase alternating current output of the energy feedback unit is connected to input sides R, S and T of the frequency converter in parallel; a PE (Protecting Earthing) terminal of the energy feedback unit is reliably connected to the ground; when the busbar voltage of the frequency converter is detected by the energy feedback unit to be up to a set valve, feedback electric energy is converted to power frequency and transferred to the power grid to carry out energy saving regulation. The four-quadrant frequency converter provided by the invention has the advantages that through an external energy feedback device, the electric energy produced by the motor is added to the input end to the frequency converter after feedback and an electric reactor is additionally arranged to avoid the harmonic pollution, so that the power factor is greatly improved and the efficient utilization ratio of the electric energy is realized.

The invention provides a refrigerator control method and device, a storage medium and a refrigerator. The method comprises the following steps: when the refrigerator is powered on to run, judging whether environment temperature and / or compartment temperature of the refrigerator meet / meets a first pre-set condition or not, wherein compartments comprise a refrigerating chamber, a freezing chamber and / or a temperature-variable chamber; if judging that the environment temperature and / or the compartment temperature meet / meets the first pre-set condition, controlling the refrigerator to run according to a first pre-set mode; and if judging that the environment temperature and / or the compartment temperature do / does not meet the pre-set condition, controlling the refrigerator to run according to asecond pre-set mode. According to the scheme provided by the invention, the problems that the temperature of modules is too high and a box body produces a lot of heat, caused by the fact that the refrigerator is powered on for the first time or is powered on again after being powered off for a period of time and a compressor is continuously run at high temperature can be avoided.

The invention provides a rotary transformer excitation system and a short circuit protection circuit and method thereof, and is used for detecting whether a short-circuit fault occurs in the rotary transformer excitation system or not. When a short-circuit fault occurs in the rotary transformer excitation system, an excitation power amplification circuit in the rotary transformer excitation systemis controlled to stop outputting excitation signals, and the output current of the system is pulled down to be close to zero, and the problem that the heating is serious due to heavy current flowingby the device is avoided. Meanwhile, a fault state feedback signal is output to a controller of the rotary transformer excitation system, so that the controller stops outputting the initial excitationsignals and enters a protection state.

The embodiment of the present invention discloses a fast charging system and method. The system includes: a charging cable and an electronic device; the charging cable is electrically connected between the DC power supply and the electronic device for charging the electronic device; the charging cable includes: a charging cable body, and a first charging module installed in the charging cable body and a charging cable controller; the electronic device includes: a rechargeable battery, a second charging module, and an electronic device controller; the first charging module and the second charging module are electrically connected between the DC power supply and the rechargeable battery; the charging cable controller is connected to the first charging cable The charging module is electrically connected; the electronic device controller is electrically connected with the charging cable controller and the second charging module, for controlling the second charging module to charge the rechargeable battery, and / or controlling the first charging module to charge the battery through the charging cable controller Charging batteries. The invention avoids the problem of serious heating inside the electronic device during fast charging, thereby avoiding potential charging safety risks and improving the user experience of the electronic device.

The invention discloses a wind power generation unloading control method. The method includes: judging whether the unloading condition is met, and when the unloading condition is met, controlling the unloading switch tube to conduct intermittently; output current, when the output current of the wind power generator exceeds the set threshold, the main control module controls the unload switch tube to be continuously turned on within the first preset time. The invention also provides a wind power generation unloading control circuit. The invention has the advantages of charging the storage battery while unloading, improving the utilization rate of wind energy, reducing the on-off frequency of the unloading switch tube, reducing switching losses, and effectively protecting wind power generators and other electrical equipment; the unloading provided by the invention The control method can also be extended to the wind-solar hybrid power generation system to realize the floating charge control of the battery by photovoltaics.

The embodiment of the invention discloses a rapid charging system and method. The system comprises a charging wire and an electronic device. The charging wire is electrically connected between the direct-current power supply and the electronic equipment and used for charging the electronic equipment; the charging wire comprises a charging wire body, and a first charging module and a charging wirecontroller which are installed in the charging wire body. The electronic equipment comprises a rechargeable battery, a second charging module and an electronic equipment controller; wherein the firstcharging module and the second charging module are electrically connected between the direct-current power supply and the rechargeable battery; the charging wire controller is electrically connected with the first charging module; and the electronic equipment controller is electrically connected with the charging wire controller and the second charging module and is used for controlling the secondcharging module to charge the rechargeable battery and / or controlling the first charging module to charge the rechargeable battery through the charging wire controller. According to the invention, the problem of serious internal heating of the electronic equipment during quick charging is avoided, so that the potential charging safety risk is avoided, and the user experience of the electronic equipment is improved.

The invention discloses a charging voltage stabilizing circuit which is used for stabilizing charging voltage output by a charging interface. The charging interface is connected with a power management chip of a mobile terminal through the voltage stabilizing circuit and comprises a voltage comparison module and a voltage stabilizing module, wherein the voltage comparison module detects the charging voltage output by the charging interface, judges whether the charging voltage is larger than reference voltage or not, controls a working state of the voltage stabilizing module according to a judgment result and enables the voltage output by the voltage stabilizing module to be higher than the reference voltage. The voltage stabilizing module directly outputs the charging voltage to the power management chip when the charging voltage is larger than the reference voltage, and supplements preset voltage to enable the charging voltage to be higher than the reference voltage and stabilized when the charging voltage is lower than the reference voltage, the problem that an electrical device cannot de charged due to low charging voltage and a charger or a battery severely emits heat due to long-time charging is avoided, and the service life of the charger and the service life of the battery are prolonged.

The invention discloses a tray supporting and fixing device which comprises a ceramic disc, a pressing block and a metal support. The ceramic disc is used for placing a tray, the pressing block is arranged on the edge of the ceramic disc and used for fixing the tray to the ceramic disc, the metal support is fixed below the ceramic disc and provided with n support arms, n is larger than or equal to3, the support arms are used for supporting the ceramic disc and fixed to a rotating shaft which achieves tray rotation, in the rotation process, the ceramic disc and the tray placed on the ceramic disc are driven to stably rotate together, and the length of a support arm of the metal support is smaller than the radius of the ceramic disc. The problem of tray waggling or lateral turning possiblycaused by electromagnetic force in induction heating is solved, radiation heat loss caused by tray heating to surrounding space can be reduced, and heating efficiency is further improved.

The invention discloses an application management method, apparatus, a terminal and a computer storage medium, which are used for solving the technical problems that the terminal heats seriously and the duration time is short caused by the wake-up of an application. The method comprises the following steps of: monitoring whether an application installed in a terminal is added to a freezing warehouse, wherein an application in the freezing library and an application outside the freezing library call an application programming interface API provided by an operating system of the terminal throughdifferent data channels; if that monitoring that first application is added to the freeze repository, switching a data channel between the first application and the API from a first data channel to asecond data channel, so as to isolate the first application from the API through the second data channel and prevent data interaction between the first application and the API so as to cause the first application to sleep in the terminal.

Embodiments of the present application provide a charging control apparatus and method, and an electronic device, the charging control apparatus is applied to an electronic device, and includes a first charging unit, a second charging unit, and a detection module. The charging control apparatus is used for acquiring the first charging voltage, the second charging voltage, and the state informationof the battery unit when the electronic device is in a charging state. A charging management module is connected with the first charging unit, second charging unit and detection module, and is used for adjusting a first charging current of the first charging unit and a second charging current of the second charging unit to charge the battery unit according to the state information, and the firstcharging voltage and the second charging voltage, a first charging apparatus and the second charging apparatus can be accessed at the same time to charge the battery unit, thereby improving the charging efficiency.

The invention provides an electrical cabinet with a drying function, which includes a cabinet body, a fan, an air inlet pipe, an air outlet pipe, a casing, a magnetic metal coil, a coil, a base, a support column, a bimetal sheet, a push rod, a moving contact and The static contact, the magnetic metal coil is fixedly installed in the inner cavity of the shell, the coil is arranged between the side wall of the inner cavity of the shell and the magnetic metal coil, one end of the base is fixedly connected with the outer wall of the magnetic metal coil, and the two One end of the supporting column is fixedly connected to the base, the two ends of the bimetal are respectively fixedly connected to the other ends of the two supporting columns, and one end of the push rod is fixedly connected to the active layer of the bimetal and the other end is fixedly connected to the end of the moving contact. Fixed connection, the other end of the moving contact is hinged to the side wall of the inner cavity of the shell, and the static contact is fixedly installed on the side wall of the inner cavity of the shell. The invention not only can dehumidify and dry the electrical cabinet, but also has the characteristics of simple overall structure and low cost.

The embodiment of the present invention discloses a mobile terminal and a charging method. The mobile terminal includes: a charging interface, a switching control switch, a charging chip, and a processor; wherein, the processor is used to control switching when the preset parameter is not within the direct charging threshold range. The control switch disconnects the direct charging path, and starts the charging chip to charge the chip for the battery; when the preset parameters are within the direct charging threshold range, the processor is used to control the switching control switch to connect the direct charging path, and according to the input current of the switching control switch , the output voltage of the charger and the input voltage of the switching control switch to obtain a direct charging current, so that the charger performs direct charging for the battery according to the direct charging current. Through this solution, the charging mode can be switched according to the preset parameters, thereby reducing the temperature rise of the mobile terminal during the charging process, reducing the loss caused by the charging line, avoiding the problem of serious heating of the charging line, and avoiding the occurrence of charging lines. Safety hazards caused by overheating.

The embodiment of the present invention discloses a fast charging system and method. The system includes: a charging cable and an electronic device; the charging cable is electrically connected between the DC power supply and the electronic device, and is used to charge the electronic device; the charging cable includes: a charging cable body, a the first charging module in the charging cable body; the electronic device includes: a rechargeable battery, a second charging module, and an electronic device controller; the first charging module and the second charging module are electrically connected to the DC power supply and the rechargeable battery; the electronic device controller is electrically connected to the first charging module and the second charging module, and is used to control the first charging module and / or the second charging module to The rechargeable battery is charged. The present invention realizes fast charging to the electronic device, and simultaneously avoids the problem of serious internal heating of the electronic device during fast charging, thereby avoiding potential charging safety risks and improving the user experience of the electronic device.

The invention discloses a water-cooled asynchronous motor for a hybrid vehicle and belongs to the structure of an asynchronous machine. A motor which is used in a coach is designed to the water-cooled asynchronous motor, a novel cooling mode is used in aspects such as a casing of the motor, a water cavity inside the motor and a bearing, a casing water-cooled waterway is designed to an even water channel, the flow is smooth, the resistance is low and the radiation is quick. Simultaneously, gasket positions are arranged on an upper end face and a lower end face of the casing axially, a water-stop structure of annular gaskets are used in a connection portion of a base and the water channel, by the aid of gaskets, a process that an aluminum alloy plate is welded and sealed is omitted, materials, working hours and cost are saved, the defect of poor welded sealing caused by argon arc welding is avoided, the reliability of water-cooled casing usage and motor operation is improved, and the water sealing effect is good. The water-cooled asynchronous motor is mainly used in the coach using hybrid power and serves as a main drive motor.

The invention relates to the technical field of medical instruments, in particular to boron neutron capture therapy equipment and method based on a high-energy electron accelerator, and the equipment comprises the electron accelerator which is used for accelerating input electrons and generating high-energy electrons after acceleration; the high Z conversion target is used for converting the high-energy electrons into high-energy X rays and converting the high-energy X rays into photoneutrons; the neutron slowing-down body is used for slowing down photoneutrons; and the controller is used for controlling the electron accelerator to generate high-energy electrons according to a control instruction of an operator, the electron accelerator emits the high-energy electrons to bombard the high-Z conversion target to obtain photoneutrons, the photoneutrons are moderated by the neutron moderator to generate moderated neutrons, and the moderated neutrons are used for performing irradiation treatment on the to-be-treated person. The equipment can effectively improve the stability of neutron source output in the low-boron neutron capture therapy process, and improve the therapy effect and the use experience.

The invention discloses a motor control and detection method and device, a holder and a movable platform. The movable platform comprises a cradle head used for carrying a load and a supporting mechanism used for supporting the cradle head, the cradle head comprises a cradle head component and a motor, and the motor is used for driving the cradle head component and the load to rotate around a preset axis. The motion state of the supporting mechanism is detected, and when the motion state indicates that the supporting mechanism continuously rotates in one direction, the motor is controlled to stop rotating, so that the problem of serious heating of the motor caused by continuous rotation of the supporting mechanism can be effectively avoided; and the continuous rotation of the supporting mechanism in one direction is not the movement expected by the user, so that the effect of saving electric power is achieved.

The invention discloses a battery protection circuit and a power tube control method thereof, which include an overcharge protection circuit, a logic control circuit and a state detection circuit. The state detection circuit includes a first state transition detection module and a second state transition detection module. The first state transition detection module detects the working state of the battery during overcharging in real time. When the state detection circuit detects that the battery is in an overcharged state and the battery is discharging, the control logic control circuit changes the output signal of the control terminal CO from low to low. It is high level, so that the second power tube is turned on, effectively avoiding the serious problem of heating of the second power tube; the second state transition detection module is used to detect the working state of the battery during over-discharge in real time, when it is detected that the battery is over-discharge state, and when the battery is charging, the control logic control circuit changes the output signal of the control terminal DO from low level to high level, and turns on the first power tube, effectively avoiding the serious problem of heating of the first power tube.

The invention provides a method, device and system for controlling an electric vehicle. The method comprises the steps of acquiring rotation angle information of a rotating handle included in the electric vehicle and rotation speed information of a motor included in the electric vehicle when it is determined that the electric vehicle runs in a non-low-gear mode; determining whether or not input current of the motor reaches a first preset current threshold value according to the rotation angle information of the rotating handle; if yes, determining whether the rotation speed information of themotor reaches a preset rotation speed threshold value; if yes, controlling the motor to stop rotating. According to the provided method, device and system for controlling the electric vehicle, a serious heat generation problem, caused by selecting an existing non-low-gear mode for driving, of the motor is solved, the service life of the motor is prolonged, and the practicability is higher.

The invention provides a charging system and method. The charging system comprises a charger and a terminal; the charger comprises a controllable constant current source, an output voltage limiting module and a protocol module; the terminal comprises a charge pump module, a protocol control module, an over-voltage and over-current protection module, a battery module, a battery charge and discharge management module and system power supply module; the controllable constant current source and the output voltage limiting module of the charger are electrically connected with the over-voltage and over-current protection module of the terminal, and the over-voltage and over-current protection module is electrically connected with the charge pump module, the battery charge and discharge management module, the battery module and the system power supply module. According to the charging system and method provided by the invention, high-voltage small-current efficient and quick charge is realized by different combination and connection manners of the battery charger and the charge pump module. The compatibility problem of a cable and a connector in the current large-current quick charge scheme, and the serious heating problem of mobile equipment in the current high-voltage quick charge scheme is also avoided.