14results about How to "Avoid power failure" patented technology

This application discloses an auxiliary power supply module and a power distribution terminal, belonging to the field of power supply. The auxiliary power supply module includes a charging circuit, an energy storage unit, a power failure detection delay circuit, a boost circuit, and a power output terminal. The charging circuit is connected to the energy storage unit and is used to charge the energy storage unit using the main power supply voltage when the main power supply voltage is normal. The power failure detection delay circuit is connected to both the charging circuit and the boost circuit and is used to output a working voltage to the boost circuit when the main power supply voltage is less than a first target voltage for a target duration. The energy storage unit is connected to the boost circuit and is used to output a stored energy voltage to the boost circuit. The boost circuit is connected to the power output terminal and is used to supply power at the working voltage, converting the stored energy voltage into a supply voltage and providing it to the power output terminal. The supply voltage is used to power the power distribution terminal. This application can improve the service life of the auxiliary power supply module and improve the stability of power supply.

The invention discloses a multi-voltage input control device and a welding machine, and the multi-voltage input control device comprises an input end group, an open-phase detection module, an inter-phase voltage detection module, a connection end switching module, an inter-phase voltage switching module and a voltage transformation module, the inter-phase voltage detection module is used for detecting inter-phase voltage information between electrified phase connection ends, and the connection end switching module is provided with a first electrified end and a second electrified end. The connecting end switching module is connected with the open-phase detection module so as to correspondingly connect each phase connecting end with a first electrified end and a second electrified end according to electrified phase information, and the interphase voltage switching module is connected with the first electrified end, the second electrified end and the primary winding; the interphase voltage switching module changes the number of winding turns of the first live-line end and the second live-line end connected to the primary winding according to the interphase voltage information, can be compatible with more voltage levels, prevents power supply faults caused by wiring errors of a user, and is convenient and reliable to use.

The invention relates to a method for testing contact resistance of a high-voltage switch cabinet. The method comprises the following steps of: performing insulation testing on an A-phase conductive loop, a B-phase conductive loop and a C-phase conductive loop by adopting a high-voltage megohmmeter; respectively testing the integral conductive loop resistance of the phase A, the integral conductive loop resistance of the phase B and the integral conductive loop resistance of the phase C by adopting a loop resistance tester; comparing test data obtained by testing the integral conductive loop resistance of the phase A, the integral conductive loop resistance of the phase B and the integral conductive loop resistance of the phase C; by measuring the overall conductive loop resistance of the high-voltage switch cabinet, the accuracy of the overall conductive loop resistance test of the high-voltage switch cabinet and the stability of the operation process are improved, and heating hidden dangers and larger power supply faults caused by poor contact at the joints of main loops in the operation process are effectively avoided.

The utility model provides a kind of passive power supply circuit and power supply equipment, it is related to the technical field of energy storage, energy storage module;Rear power supply module, including the first voltage monitoring submodule and linear voltage stabilizer of being connected, the input of the first voltage monitoring submodule is connected with the energy storage module;The output voltage of the energy storage module is lower than first threshold value when the microcontroller is in working condition, the microcontroller is in low power consumption state;The output voltage of the energy storage module is higher than first threshold value, the first voltage monitoring submodule outputs first level signal, the microcontroller receives the first level signal, and the microcontroller works normally. When the power supply voltage of energy storage module is too low by the embodiment provided by the utility model, the microcontroller is adjusted to low power consumption state, when the voltage of energy storage module recovers, the microcontroller resumes work, and the microcontroller is prevented from power failure.

The utility model relates to controller technical field, concretely relates to a kind of whole vehicle controller of electric explosion-proof mine car.The scheme of the present application, signal input unit integration analog quantity, switching value, hard wire wake-up and frequency quantity input module, the analog quantity signal of speed, pressure etc. sensor can be directly compatible, equipment state switching value signal, motor speed frequency quantity signal and vehicle wake-up hard wire signal, without multiple independent acquisition device adapter.This shortens signal transmission path, reduces external interference, improves the accuracy and real-time of data acquisition.OC output module stable output control signal, meet electric explosion-proof mine car drive, brake, steering and other actuator control requirements;Low-voltage power supply module directly for external low-power device power supply, without additional power module.Both avoid the power failure caused by poor compatibility of traditional controller power module, reduce the number of vehicle power components, reduce fault point.

A new energy automobile heat preservation shed relates to the technical field of heat preservation sheds, and adopts the technical scheme that the new energy automobile heat preservation shed comprises a shed body and a temperature control system, the shed body comprises side plates, a bottom plate and a top cover which define a vehicle parking space, and the side plates are provided with door plates for vehicles to enter and exit. The side plates, the door plates, the top cover and the bottom plate all comprise supporting layers and heat preservation layers arranged on one sides of the inner walls of the supporting layers. The temperature control system comprises a controller, a temperature sensor electrically connected with the controller, an electric heating piece and an electric ventilation window, the electric heating piece is arranged on the side, away from the supporting layer, of the heat preservation layer of the side plate, and the electric ventilation window is arranged on the side plate or the top cover. The temperature control system is used for creating a constant-temperature environment for the interior of the shed body, the heat preservation performance of the shed body is enhanced, energy consumption is reduced, new energy automobiles parked in the shed body are in the environment suitable for normal work of battery assemblies, normal charging power is guaranteed, and the power failure phenomenon and the automobile heating link during starting are avoided.

The present invention relates to a device for detecting wireless charging equipment and a corresponding method, wherein the device adopts a separated main control module and a wireless charging power receiving module, can effectively realize the detection of wireless charging equipment, has the characteristics of high temperature resistance and high voltage resistance, and has a long service life. The main control module in the device controls the device during the detection process, and can more conveniently perform fault analysis on faults occurring during the inspection process. The device for detecting wireless charging equipment and the corresponding method of the present invention have the characteristics of easy operation, high reliability, and long service life, and can well inspect wireless charging equipment.

The invention provides a current divider of a circuit breaker and the circuit breaker, and the current divider of the circuit breaker comprises a binding post which is provided with a wire plugging end and is provided with a slide way; the expansion conductive part comprises a wiring end and a connector fixedly connected with the wiring end, and the connector is inserted into the slide way to be electrically connected with the binding post; wherein the wire plugging end and the wiring end can be plugged and matched. According to the technical scheme of the invention, the problem that the main switch of the power distribution cabinet needs to be switched off and powered off when the ammeter is installed in the prior art is effectively solved.

The application discloses an Ethernet power supply circuit and a smart mobile device, and relates to the technical field of Ethernet power supply, wherein the Ethernet power supply circuit comprises a network transformer module, which comprises at least two network transformer units; for any network transformer unit, a transformer in the network transformer unit is connected with an Ethernet interface, used for receiving a data signal of a corresponding Ethernet channel in the Ethernet interface and transmitting the data signal to a corresponding load; and the Ethernet power supply circuit further comprises a power switch module, which comprises at least two power switches; for any power switch, the power switch is connected with an intermediate tap of a corresponding network transformer unit, used for outputting a power supply signal to the intermediate tap according to a corresponding control signal, so that the corresponding transformer of the intermediate tap transmits the power supply signal to the corresponding load. The application realizes independent power supply control and fault isolation of each PoE channel, thereby guaranteeing stable starting and normal operation of the overall function of the device.

The utility model relates to the technical field of power supplies, and discloses a self-locking power supply control circuit based on a self-resetting switch, which is connected with an equipment master controller and is used for controlling the on-off between a power supply input end and a power supply output end, and the equipment master controller is connected with the power supply output end and is used for accessing an input signal and generating an output signal. The self-locking power supply control circuit comprises a first MOS switch which is connected between a power supply input end and a power supply output end and is used for outputting an input signal, an NPN switch which is connected with the first MOS switch, the power supply input end, the power supply output end and an equipment master controller so as to access an output signal, and a self-resetting switch which is connected with the power supply output end, the equipment master controller and the first MOS switch. The second MOS switch and the first MOS switch are connected in parallel between the power supply input end and the power supply output end and are connected with the NPN switch; and the third MOS switch is connected with the power supply input end and the NPN switch.

The invention discloses an LDO circuit and a control method, the LDO circuit comprises an LDO module, a voltage following module, a first switching module and a second switching module, the LDO module is used for generating a first voltage based on a reference voltage, the voltage following module is used for carrying out voltage following on the first voltage to generate a second voltage, and the second switching module is used for carrying out voltage following on the second voltage. The first switching module is used for turning on the voltage following module in a normal mode and turning off the voltage following module in a low-power-consumption mode, and the second switching module is used for outputting first voltage in the low-power-consumption mode and outputting second voltage in the normal mode. According to the LDO circuit and the control method, the requirement for stable power supply in a low-power-consumption mode is met through the basic LDO module, the response speed of the circuit in a normal mode is increased through the voltage following module, active mode switching is achieved through the switching modules, and therefore dual-mode power supply is completed.

The present invention discloses an active card terminal and an automatic power-on method thereof, and relates to the technical field of card products. The active card terminal includes a smart card chip, an MCU, a power supply module, a power switch module, a rectifier module, and a switch module; the MCU is electrically connected to the smart card chip; the input end of the power switch module is electrically connected to the output end of the power supply module, the output end of the power switch module is electrically connected to the power end of the smart card chip and the power end of the MCU respectively, the enable end of the power switch module is electrically connected to the first control end of the MCU, the output end of the rectifier module, and the output end of the switch module respectively; the controlled end of the switch module is electrically connected to the second control end of the MCU. According to the active card terminal of the present invention, when the system is in a shutdown state, it can realize automatic power-on when swiping a card to conduct a transaction, thereby facilitating the user's operation, without the need for the user to manually power on, and facilitating the user to check the transaction status.

The invention belongs to the field of battery management, and provides a multi-battery charging management method and a multi-battery charging management device, an intelligent channel mode and a forced channel mode are set, the SOC value of a battery in each channel can be monitored in the intelligent channel mode, and each battery pack is controlled to charge and discharge in line by comparing the SOC value with a preset threshold value, so that the charging efficiency is improved. The battery pack controlling the SOC value is charged and discharged preferentially, chaos is avoided, safety is ensured, in addition, the battery pack switching speed is high, and equipment power failure is avoided.

The invention belongs to the field of electrical insulation detection of power equipment, and discloses a high-voltage cable buffer layer ablation characteristic gas analysis and cable state grading evaluation method and system, which can discover the ablation phenomenon of a cable as soon as possible and avoid potential power failure and potential safety hazards through rapid analysis of gas components. Accurate evaluation can be provided through the relation between the gas composition and concentration and the ablation degree, and making of targeted maintenance and replacement plans is helped. According to the invention, timely monitoring and evaluation can be realized, the accident risk caused by cable faults can be reduced, and the safety and reliability of a power system are enhanced. By discovering problems in advance, power failure and maintenance cost caused by sudden faults are reduced, and therefore the overall economic benefits are improved. The gas analysis data can provide a basis for long-term monitoring and management of the operation state of the cable, and a more scientific maintenance strategy is supported.