1269 results about "Solid-state relay" patented technology

Two operation channels CH1 and CH2 of a bidirectional photothyristor chip 31 are disposed away from each other so as not to intersect with each other. In between a P-gate diffusion region 23 on the left-hand side and a P-gate diffusion region 23′ on the right-hand side on an N-type silicon substrate, and in between the CH1 and the CH2, a channel isolation region 29 comprised of an oxygen doped semi-insulating polycrystalline silicon film 35a doped with phosphorus is formed. Consequently, a silicon interface state (Qss) in the vicinity of the channel isolation region 29 on the surface of the N-type silicon substrate increases, so that holes or minority carriers in the N-type silicon substrate are made to disappear in the region. This makes it possible to prevent such commutation failure that when a voltage of the inverted phase is applied to the CH2 side at the point of time when the CH1 is turned off, the CH2 is turned on without incidence of light, and this allows a commutation characteristic to be enhanced.

A solid-state relay / breaker that can replace mechanical units to control any type of AC or DC load. Power MOSFETs or other transistors control a load current. A bypass current sensing path monitors MOSFET current and causes a shutdown through signal processing in the event of an over-current condition. This shutdown resembles that of a slow-blow fuse where the rate of shutdown is proportional to the value of the current. This prevents shutdown on momentary spikes or in-rush. In addition, temperature and internal power supply voltages are monitored to determine additional operational conditions where over-temperature or voltages out of range can also cause shutdown. The MOSFET and current sensing path are turned on and off in staggered timing with different slew rates to provide built-in hysteresis. The device can be manufactured in any type of package to match any type of environment or existing replacement requirement.

Embodiments of the present invention are directed to a method and apparatus for multiple battery cell management. In one embodiment, a solid state relay is used instead of a mechanical relay in a BMS. The SSR is smaller and faster than a mechanical relay, enabling smaller BMSs that more efficiently and safely manage battery cell charge. In another embodiment, a plurality of battery cells are connected to two rails, using four SSRs to control access to the battery cells. In one embodiment, a plurality of battery cells are grouped together and controlled as one module of a multi-module BMS. In one embodiment, each module has 10 battery cells in series. In one embodiment, the BMS controls 4 modules. In one embodiment, each module is controlled by control signals passing through logical gates. In another embodiment, each module is controlled by control signals passing through a programmed circuit.

An apparatus used in a motor vehicle that provides load prioritization, load shedding, start sequencing and support of ultra or super capacitors when coupled to the motor vehicle's electrical power source and distribution network. The apparatus includes circuit Breakers, Solid State Relays, Controller Area Network (CAN) physical, transport and logical interface which enables the apparatus to connect or interface with power sources and to the vehicle's multiplex bus. The apparatus also includes decision, threshold detection and operational awareness logical software functions that enable it to prioritize power between the vehicles electrical components and interrogative / processing software functions that enable the apparatus to diagnosis abnormalities and communication status information to the vehicle operator. Lastly, the apparatus includes DC converters, temperature compensation circuitry, solid state relays, logic drivers and software functions that allow load shedding and temperature compensation to maintain efficient operation of the power source.

A power control system includes a base having a housing configured for releasably receiving a control unit and a cavity within the housing for receiving a solid state relay having a hockey puck configuration. The base includes an input power terminal for coupling to an input power source, an output power terminal for coupling to a power receiving load, and coupling fixtures for fixedly and electrically coupling to input and output power terminals and control terminals of the received solid state relay. A control unit is configured to control the solid state relay for selectively providing, at least a portion of, the power received at the input power terminal to the output power terminal. The control unit has a housing adapted to be releasably coupled to the base housing. The control unit and base each configured to electrically couple the control unit to the control terminals of the received solid state relay as a function of the control unit being coupled to the base.

A method and apparatus are described for controlling the flow of power in each input line to a three phase AC inductive load in order to reduce the amount of VAR in the system, and thus increase the operational efficiency of the inductive load. Solid state relays are positioned in series in each of the three inductive load line inputs, and current allowed to flow to the inductive load only during the time during which the SSRs are in a conducting state. The calculation of VAR is achieved by processing data from each of the input lines using a separate controller boards each dedicated to each of the lines. The controller in turn, based on the calculated VAR, increments the time, either increasing or decreasing it from a predetermined value, during which the SSRs in that line remains in the non-conducting state.

A method and circuit is provided for reducing power consumption in a power transformer, typically incorporated into an electrical or electronic device such as a consumer device. In an embodiment, a detection / isolation circuit is coupled to an input of a power transformer / rectifier via a switching device. The switching device can be, for example, a solid state relay. The detection / isolation circuit is configured to sense the occurrence of no-load conditions in the power transformer and responsively disengage the power transformer from a coupled source of power (e.g., wall outlet) via the coupled switching device.

A smart-home device may include an energy-storage element that stores energy that is harvested from an environmental system and a solid state relay (SSR) switching integrated circuit (IC). The SSR switching IC may include switching elements that operate in a first state and a second state. The IC may also include a control circuit that causes the switching elements to operate in the first state to activate a function of the environmental system until the energy-storage element has dropped below a threshold. The control circuit may also cause the switching elements to operate in the second state and harvest energy from the environmental system, determine that a first time has elapsed since the switching elements began operating in the second state, and cause the one or more switching elements to again operate in the first state.

A power control system includes a base having a housing configured for releasably receiving a control unit and a cavity within the housing for receiving a solid state relay having a hockey puck configuration. The base includes an input power terminal for coupling to an input power source, an output power terminal for coupling to a power receiving load, and coupling fixtures for fixedly and electrically coupling to input and output power terminals and control terminals of the received solid state relay. A control unit is configured to control the solid state relay for selectively providing, at least a portion of, the power received at the input power terminal to the output power terminal. The control unit has a housing adapted to be releasably coupled to the base housing. The control unit and base each configured to electrically couple the control unit to the control terminals of the received solid state relay as a function of the control unit being coupled to the base.

A solid state relay composed of a series connected pair of LDMOSFETs has a minimized output capacitance. Each LDMOSFET is configured to have a silicon layer of a first conductive type, a drain region of the first conductive type diffused in the top surface of the silicon layer, a well region of a second conductive type diffused in the silicon layer in a laterally spaced relation from the drain region, and a source region of the first conductive type diffused within the well region to define a channel extending between the source region and a confronting edge of the well region along the top surface of the silicon layer. Each LDMOSFET is of an SOI (Silicon-On-Insulator) structure composed of a silicon substrate placed on a supporting plate, a buried oxide layer on the silicon substrate, and the silicon layer on the buried oxide layer. The well region is diffused over the full depth of the silicon layer to have its bottom in contact with the buried oxide layer, so that the well region forms with the silicon layer a P-N interface only at a small area adjacent the channel. Because of this reduced P-N interface and also because of the buried oxide layer exhibiting a much lower inductive capacitance than the silicon layer, it is possible to greatly reduce a drain-source capacitance for minimizing the output capacitance of the relay in the non-conductive condition.

A solid state relay and method for enabling and disabling power to a load are disclosed. A fast turn-on circuit and fast turn-off circuit receive control signals in an isolated manner. The control signals allow only one of the fast turn-on circuit and fast turn-off circuit to be enabled at a time. A power switching circuit that enables power to be supplied to a load when the fast turn-on circuit is enabled and the fast turn-off circuit is disabled state, and disables the power from being supplied to the load when the fast turn-on circuit is disabled and the fast turn-off circuit is enabled. A power supply circuit provides isolated power used by the fast turn-on and fast turn-off circuits to drive or discharge a gate in the power switching circuit.

The present invention relates to a phase change thermal storage tester, and consists of a water bath, a voltage stabilizer, a solid state relay, a power converter, a temperature detector, a data acquisition instrument and a computer. The water bath consists of an internal heating barrel, an electric heating rod and an external insulating barrel. One end of the voltage stabilizer is connected with a power supply, and the other end is connected with the electric heating rod and used for providing electricity for the electric heating rod. The solid state relay, the data acquisition instrument and the computer together form the monitoring and controlling part of the whole testing process. The data collected by the data acquisition instrument is used for judging whether the heating needs stopping or starting. The computer transmits commands to connect or disconnect the solid state relay. Aiming at the defect in the existing experimental method of researching or testing phase change materials for construction, the device can heat the water bath with the phase change materials for construction, measure the temperature by the temperature sensor, map the real-time temperature curve, control the starting and stopping of the heating device, and calculate the stored heat of the phase change materials for construction according to the test data.

The invention discloses a method making use of numerical control tube bender to heat constant temperature bent tube in the material technology field. The method has the detail steps that a hole is cut on a height direction in the internal part of a round die, and holes are respectively cut on a height direction in the internal parts of a guide die, an anti-crease die and a mandril. A heating medium and a temperature sensor are respectively arranged in the holes. Insulation medium is arranged on the touch area of the lower surface of the round die and a machine body, on the clinching area of the back face of the guide die and a slide block and on the contacting area of the anti-crease die and a support frame thereof. The heating medium and the temperature sensor are respectively connected with a temperature control system which consists of a digital-display temperature control instrument and a solid relay. A temperature control instrument controls the opening and closing of the solid relay through comparing a self-set value with a collected value by the temperature sensor so as to realize a temperature control to the die; the tubes are hot bended -for molding. The invention realizes heating bending in a constant temperature for tubes which are difficult to be transfigured with high shaping accuracy, and is suitable for a batch production.

The invention discloses a three-phase AC motor power phase-losing detection and phase-correcting method and device, which is characterized by the following: judging whether outer power is phase-losing and phase-sequence changing through detecting three-phase AC power phase-position sequence; avoiding error judgment for loop of the three-phase motor and solid relay; designing the device according to the character of microprocessor and digital signal processor.

There is described herein a direct current power supply which offers improved control over an output signal. An input signal generated by an alternating current source is received and chopped by a solid state relay. The chopped signal is rectified by a bridge rectifier before being filtered by an “LC” (induction coil-capacitor) or “CLC” (capacitor-induction coil-capacitor) filter. The output signal can then be used as a direct current power supply signal. This power supply may be used in various types of ozone generation systems.

The present invention relates to a temperature control device of an automatic injection plastic hollow molding machine. The device consists of a PLC-high-speed singlechip system, a temperature sensor signal amplification circuit, a heating device drive circuit and an operation panel; the method is that temperature information is converted into electricity information through temperature sensor; temperature signal is exerted into an operational amplifier through a bridge detecting circuit of the temperature sensor signal amplification circuit and a lowpass; after amplification, the temperature signals are converted into digital signals through a A / D converter of the high-speed singlechip, and then difference value is achieved after comparison with a temperature setting control value, and then a control value is achieved through fuzzy PID calculation; the control value is converted into square waves with certain dutyfactor; heating power of a solid-state relay for driving heated circle is output and controlled by an I / O port of the high-speed singlechip; a dynamic value and a setting control value of eight-way temperature are displayed in a dot matrix LCD module of the operational panel in real-time. The device and the method are exact in temperature control effect, high in performance-price ratio, simple in operation.

The invention provides an AC solid state relay. The AC solid state relay comprises a power circuit, an input circuit, controllable silicon and an alarm output circuit. The AC solid state relay is characterized by further comprising a single-chip microcomputer; the output end of the power circuit is connected with the power input end of the single-chip microcomputer; the output end of the input circuit is connected with the signal input end of the single-chip microcomputer; the alarm output end of the single-chip microcomputer is connected with the input end of the alarm output circuit; the sampling ends of a zero-passage sampling circuit are respectively connected in parallel to two ends of the controllable silicon; the zero passage signal output end is connected with the zero passage signal detecting end of the single-chip microcomputer; the control input end of a controllable silicon triggering circuit is connected with the triggering signal output end of the single-chip microcomputer; the first control output end is connected with the control end of the controllable silicon; the second control output end is connected with an cathode or an anode of the controllable silicon. The AC solid state relay has the advantages that the mode of obtaining the zero passage signal by direct connecting in parallel to the controllable silicon is adopted, thus the fault detection of a load circuit is realized on the premise that the complexity of the circuit is not increased; in addition, the fault of the open circuit in the controllable silicon can also be detected; the control is performed through the single-chip microcomputer, so that the intelligent solid state relay is realized, and the safety and reliability and the product are improved.

An Automatic Transfer Switch (ATS) having a switch configured to connect one of two sources to a load, a mechanical drive, an actuator, and a solid state control relay is disclosed. The mechanical drive is configured to drive the switch between a first position and a second position, the first position connecting the switch to the first source, and the second position connecting the switch to the second source. The actuator is in mechanical communication with the mechanical drive to cause the mechanical drive to move on command. The solid state control relay is responsive to an external signal and productive of a control signal, wherein the actuator is responsive to the control signal to cause the mechanical drive to move.

An apparatus used in a motor vehicle that provides load prioritization, load shedding, start sequencing and support of ultra or super capacitors when coupled to the motor vehicle's electrical power source and distribution network. The apparatus includes circuit Breakers, Solid State Relays, Controller Area Network (CAN) physical, transport and logical interface which enables the apparatus to connect or interface with power sources and to the vehicle's multiplex bus. The apparatus also includes decision, threshold detection and operational awareness logical software functions that enable it to prioritize power between the vehicles electrical components and interrogative / processing software functions that enable the apparatus to diagnosis abnormalities and communication status information to the vehicle operator. Lastly, the apparatus includes DC converters, temperature compensation circuitry, solid state relays, logic drivers and software functions that allow load shedding and temperature compensation to maintain efficient operation of the power source.

The invention relates to temperature control equipment for plastic sheet hot-forming machine heating system. It includes terminal, programmable logic controller, at least one temperature measurement input module, at least one temperature sensor, at least one solid state relay set. Each temperature sensor is corresponding with one solid state relay set. Each temperature measuring signal input is corresponding with many temperature control signal outputs. The many outputs can not only control temperature in a whole for the heater, but also can independently adjust the temperature for each area of the heater. Thus the invention can not only precisely control the temperature, but also greatly reduce device manufacturing cost, and has simple operation.

The invention which relates to an automatic constant temperature type photoacoustic detection device for SF6 decomposed components and an experiment method thereof belongs to the technical field of SF6 gas insulation device partial discharge online monitoring. The device is characterized in that an automatic constant temperature system is arranged in present infrared photoacoustic spectrum monitoring systems; and according to the method, the device is utilized to detect the SF6 gas partial discharge decomposed components in a GIS (gas insulated substation) simulation element under automatic preset temperature constancy conditions. According to the invention, the influence of external environment can be eliminated, the gas components of SO2, CO2, CF4, SO2F2, SOF2 and the like with the concentrations of low to 0.01muL / L can be effectively detected, the accuracy, the detection precision and the stability are high, and performances of a solid state relay are stable, so the long-term effective working of the automatic constant temperature system can be guaranteed. The device which can be widely applied to the field of the SF6 gas insulation equipment partial discharge online monitoring is especially suitable for detecting the SF6 gas partial discharge decomposed components in the GIS.

Power interruption device and / or method switches, controls, or otherwise interrupts one or more electrical signal, such as AC power or other electrical signal, applied to one or more load preferably via semiconductor or other solid state device, such as bipolar junction transistors (BJT), isolated gate bipolar transistor (IBJT), MOSFET, or other integrated circuit device. Advantageously such power interruption solution avoids conventional forced-based relay approaches, such as electromechanical relays, solid state relays, semiconductor control rectifiers (SCR), semiconductor triode for alternative current (TRIAC), etc., which are handicapped by limitations, including power carrying to the load, control mechanism, as well as size and inability to adapt to various signaling interfaces and communications. Preferred power interruption approach avoids electromechanical limitations, and thus offers improved speed, reliability, and functional versality to support various communication interfaces. For example, solid state power interrupter includes integrated circuit formed on semiconductor substrate, with switch embodied in circuit reconfigurable electronically to interrupt power signal coupled to switch from coupling to electrical load. Said circuit having one or more diode biased parasitically to cause power signal interruption, optionally in double pole single through (DPST) configuration, single pole single through (SPST) configuration, or double pole double through (DPDT) configuration. Optional pseudo airgap switch and / or interface coupled to the circuit for communicating with or controlling said switch.

A method and circuit is provided for reducing power consumption in a power transformer, typically incorporated into an electrical or electronic device such as a consumer device. In an embodiment, a detection / isolation circuit is coupled to an input of a power transformer / rectifier via a switching device. The switching device can be, for example, a solid state relay. The detection / isolation circuit is configured to sense the occurrence of no-load conditions in the power transformer and responsively disengage the power transformer from a coupled source of power (e.g., wall outlet) via the coupled switching device.

A solid state relay includes: an oscillator circuit responsive to a control signal for generating an a.c. signal; an isolation transformer having a primary winding which forms a part of the tank circuit of the oscillator circuit and a secondary winding; a rectifier responsive to the a.c. signal from the oscillator circuit for providing a d.c. drive signal; and a switch circuit responsive to the drive signal to open and close the relay.

A method and apparatus provides for high-speed switching of high-voltage and high power MOSFET-based solid state relays. A driver for a MOSFET based, high voltage, high current electronic relay includes a current supply for actuating the switching circuit and a transformer arrangement coupled to the current supply for receiving the supply of current from the current supply. The transformer arrangement is adapted for coupling with the switching circuit for selectively applying a predetermined voltage to the switching circuit which establishes the switching circuit in switch conducting or switch isolation.

The invention relates to a voltage collecting circuit for monomer batteries of a battery pack. After voltages of the monomer batteries of the power battery pack are isolated and sampled by employing a solid-state relay, a signal conditioning and isolating circuit and a microcontroller in a matching manner, the voltages are fed into an A / D (Analog-to-Digital) passage of the microcontroller for analog-to-digital conversion; the microcontroller is used for rapidly controlling two paths of solid-state relays connected with two electrodes of any monomer battery to operate at the same moment, thus, a terminal voltage of the corresponding monomer battery can be obtained on a sampling bus; simultaneously, as for electrical security, a terminal voltage signal, obtained from the battery pack, of the monomer battery needs to be isolated by an isolation amplifier, then can be input to the A / D passage of the microcontroller; and the process above is suitable for the voltage collecting circuit for the monomer batteries of the power battery pack. The circuit is low in cost, simple and practical, as well as safe and reliable.

An active safety circuit with loads protected by solid state relays comprising several solid state relays (1, 2, 3) supplying loads, controlled in turn from a microcontroller (4) for opening said relays (1, 2, 3) in the case of an anomaly in said loads, comprising a fuse (5) inserted in a supply network (6) of relays (1, 2, 3) and a grounded shunt line (7) from one point (8) of the network (6) between said fuse (5) and relays (1, 2, 3), and a safety switch (9) controlled by said microcontroller (4) and inserted in the line (7). A temperature detector (10) is either associated to each relay (1, 2, 3) or is commonly shared by several of said relays (1, 2, 3), and the detector (19) is connected to the microcontroller (4).

The invention discloses an intelligent greenhouse roller curtain control system based on a multi-sensor information fusion technology. In the system, a single chip microcomputer detects roller curtain machine position feedback information fed back by a temperature sensor, a light sensor, a moisture sensor, an upper limiting switch and a lower limiting switch, accordingly, the inner-outer environment state of a solar greenhouse is judged, then the single chip microcomputer sends control information to a solid-state relay which controls automatic rolling and falling action of a greenhouse straw curtain, and meanwhile real-time temperature of the greenhouse and relative humidity of atmosphere are displayed through a Nixie tube. According to the intelligent greenhouse roller curtain control system, automatic curtain rolling and falling of the roller curtain machine are achieved under the situations of day-night alternating, bad weather and temperature shock, the labor intensity of greenhouse farmers is greatly lowered, production efficiency is improved, and production cost is lowered.

The invention relates to an anti-interference electricity module in a bypass mode and a control method of the anti-interference electricity module. The anti-interference electricity module comprises a single-chip microcomputer, an electromagnetic relay, a solid-state relay, an energy storage capacitor set, an AC / DC switching power supply, a DC / DC power supply, a voltage conversion chip, an alternating voltage sampler and a state detector, wherein two ends of the alternating voltage sampler and two ends of the state detector are respectively in signal connection with a grid and the single-chip microcomputer. The input end and the output end of the AC / DC switching power supply are respectively and electrically connected with the grid and the energy storage capacitor set, and the output end of the energy storage capacitor set is electrically connected with the single-chip microcomputer and a contactor respectively through the voltage conversion chip and the DC / DC power supply. A normally closed contact of the electromagnetic relay is arranged on the grid, and a normally open contact of the electromagnetic relay and a normally open contact of the solid-state relay are connected in series on a direct current power supply loop. The anti-interference electricity module can supply alternating current and direct current to the contactor respectively in the normal running process and the electricity interference process, the defects of starting of pulsating direct current are overcome, and pull-in of the contactor is maintained, so the reliability is high and operational requirements of a continuous production line can be met.