1684 results about "External circuit" patented technology

An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, a driving assembly, and a circuit assembly. The movable portion is used for connecting to a first optical element. The movable portion is movable relative to the fixed portion. The driving assembly is used for driving the movable portion to move relative to the fixed portion. The circuit assembly is electrically connected to the driving assembly. The driving assembly is electrically connected to an external circuit through the circuit assembly.

The invention belongs to the technical field of sewage treatment, and particularly relates to an anaerobic ammonia oxidation-photoelectric denitrification deep nitrogen removal method. The method comprises the following steps: firstly, adopting a double-chamber reactor; introducing part of sewage into the cathode chamber, carrying out Anammox reaction under a dark state condition to remove ammonia nitrogen and part of nitrite nitrogen, and synchronously generating nitrate nitrogen; turning on a light source to irradiate the anode chamber, exciting photo-induced electrons by a photosensitizer, transmitting the photo-induced electrons to the cathode chamber through an external circuit, and driving the sulfur autotrophic denitrification sludge to reduce residual nitrite nitrogen and nitrate nitrogen generated by Anammox; the total nitrogen removal rate is close to 100%. According to the invention, photo-induced electrons are used as the only denitrification electron donor, so that the addition of a carbon source / sulfide is thoroughly avoided, and the risk of secondary pollution is eliminated. The method is suitable for green low-carbon deep treatment of sludge digestion liquid and pharmaceutical wastewater high-ammonia-nitrogen low-carbon-nitrogen-ratio sewage.

The invention relates to the technical field of relay detection, and particularly provides a relay fault detection circuit, method and system applied to an energy storage system, and the circuit comprises an energy storage system positive pole loop, an energy storage system negative pole loop, and a voltage collection circuit. The energy storage system cathode loop is that the cathode of the battery is connected with the cathode of the external circuit through a main cathode relay, and the voltage acquisition circuit comprises a battery end voltage transmitted to the main control chip through a voltage acquisition module and an external circuit end voltage transmitted to the main control chip through the voltage acquisition module. The main control chip sends control signals to the control ends of the main positive relay and the main negative relay and receives feedback signals of the state feedback end. By means of the optimized detection circuit, multiple independent voltage detection circuits and corresponding AD conversion units do not need to be additionally arranged, and the fault that the main positive relay and the main negative relay cannot be closed and the fault that the main positive relay and the main negative relay are adhered in the operation process can be accurately recognized.

The invention discloses a chip winding common mode inductor, which relates to the technical field of inductors, and comprises a magnetic core, a base, a winding and a welding block, the surface of the welding block is provided with a threading hole, and the welding block is provided with a soldering tin cavity; and the deformation element is arranged on the welding block and generates bending deformation at a high temperature so as to generate bending acting force on one end, penetrating into the soldering tin cavity, of the winding. According to the invention, the assembly of the winding and the welding block is simplified, when the welding block is welded with the bonding pad of the external circuit board, after the molten soldering tin is solidified, the connection area of the molten soldering tin and the welding block is increased, the connection firmness degree of the welding block and the bonding pad is further improved, and in addition, the temperature of the molten soldering tin is relatively high, so that the deformation element is bent and deformed at high temperature; the bending deformation part of the deformation element extrudes the end part of the winding, so that the end part of the winding is bent, and after the soldering tin is solidified, the end part of the winding can be connected with the welding block by melting the soldering tin, and the pulling resistance of the winding can be increased, so that the winding is not easy to fall off from the welding block.

An external connection bus bar to be connected to a storage element group having a plurality of storage elements and having an output electrode terminal for outputting electric power to an external circuit includes a main body portion to be connected to the output electrode terminal, an external connection terminal to be connected to an external circuit, and a circuit board connection portion to be soldered to a bus bar land provided on the circuit board. The external connection terminal is provided between the main body portion and the circuit board connection portion.

The utility model discloses a magnetic shaft with an awakening function, which comprises a base, an upper cover, a guide core, a reset spring, a permanent magnet, a Hall element, a moving plate which is arranged on the side edge of the guide core and is integrally downwards and elastically bent, and a static plate arranged below the moving plate, at least one protruding edge is formed on the side edge of the guide core, the movable piece comprises at least one movable piece supporting arm transversely extending in the direction of the protruding edge, the movable piece supporting arm is driven by the protruding edge to make contact with or be separated from the static piece under the acting force that the guide core is pressed by external force, and the movable piece and the static piece are electrically connected with an external circuit board. According to the wireless keyboard, the mechanical switch is triggered to wake up the Hall element to realize signal transmission when a user presses the wireless keyboard, the mechanical switch and the Hall element do not interfere with each other when the wireless keyboard is not pressed, and the Hall element is dormant, so that the aims of saving electric power and prolonging the service life of the wireless keyboard are fulfilled; and in addition, the mute arm is arranged for buffering the downward pressing impact force, so that the mute function is achieved.

A luminous device includes a flexible circuit board, a battery, a plurality of predetermined color light-emitting diodes, a sensor and a control chip. The battery, the predetermined color light-emitting diodes, the sensor and the control chip are arranged on the flexible circuit board. The sensor is configured to detect an external force to generate a control signal. The control chip is connected to the sensor, the predetermined color light-emitting diodes and the battery. The control chip is configured to receive the control signal and select a lighting mode according to the control signal to control the predetermined color light-emitting diodes emit light. The luminous device of the invention uses the flexible circuit board to sense the external force to emit light without requiring external circuits, so as to reduce the overall volume. Moreover, the luminous device of the invention can be installed or attached on any detachable object.

The invention discloses a myoelectricity and ultrasound collaborative sensing flexible integrated array and a preparation method thereof. The flexible integrated array comprises an ultrasound sensing array and a myoelectricity sensing array which are integrated on a wearable flexible film, a piezoelectric module layer of each ultrasonic sensing module and a myoelectricity electrode layer of each myoelectricity sensing module in the array are connected to an external circuit, and the sensing modules are arranged and designed according to muscle positions and directions of specific parts of a human body to form a high-density and high-precision ultrasonic / myoelectricity cooperative sensing hybrid integrated array. According to the flexible integrated array, the ultrasonic signal and the electromyographic signal of the muscle can be obtained at the same time, so that multi-dimensional muscle state monitoring is achieved, when the flexible integrated array monitors the abnormal signal, the position of the abnormal muscle is determined through the array element receiving the abnormal signal, and automatic positioning of the abnormal muscle can be achieved.

The present application provides a sound production apparatus and an electronic device. The sound production apparatus comprises a housing, a magnetic circuit assembly, a vibration assembly, and a spider. The magnetic circuit assembly has a first magnetic gap and a second magnetic gap. The vibration assembly comprises a diaphragm component and a voice coil component. The voice coil component comprises a first voice coil disposed corresponding to the first magnetic gap and a second voice coil disposed corresponding to the second magnetic gap. The spider is electrically connected to the voice coil component and an external circuit. The spider comprises a connection arm, a bent arm, and a vibration arm connected in sequence. The connection arm is disposed on the diaphragm component and is electrically connected to the first voice coil and the second voice coil. The vibration arm extends in a bent shape. The bent arm is connected between the connection arm and the vibration arm, and the bent arm extends from an inner end of the vibration arm along a vibration direction of the vibration assembly and is connected to the connection arm. This configuration improves the magnetic field strength of the magnetic circuit assembly, thereby increasing the BL value of the sound production apparatus and ensuring the acoustic performance of the sound production apparatus.

A stretchable circuit board assembly and a method for manufacturing the same are provided. The circuit board assembly includes a flexible circuit board and an outer circuit board. The flexible circuit board includes a first base layer and an inner wiring layer. The flexible circuit board is divided into a connecting area and a stretchable area. The inner wiring layer within the connecting area includes an electrical connecting portion exposed from the outer circuit board. The stretchable area is configured to deform into at least one bent portion. The bent portion is used to cause the electrical connecting portion to stretch relative to the outer circuit board. The outer circuit board includes a second base layer and an outer wiring layer. A surface of the second base layer away from the outer wiring layer defines at least one blind groove. The blind groove is configured to receive the bent portion.

An object is to provide a technique that eliminates the need for an external circuit for enhancing the breakdown voltage. A switching element drive circuit includes a primary circuit and a secondary circuit, and an insulating element isolating the primary circuit and the secondary circuit from each other in terms of a direct current. The secondary circuit includes a semiconductor substrate, a detector provided on a portion of the semiconductor substrate, including a pn junction isolation portion, and configured to detect a voltage of a high voltage terminal, and a controller provided on a remaining portion of the semiconductor substrate and configured to control a control voltage of a semiconductor switching element based on a second signal and a detection result of the detector.

The invention discloses an intelligent fuse, which comprises a conductor pre-fracture, an explosion device, a cutting device and an amplitude limiter, and is characterized in that the amplitude limiter is connected in series between the explosion device and a conductor at the front end of the conductor pre-fracture and is used for transmitting a generated voltage drop signal to the explosion device when an external circuit is short-circuited; the explosion device comprises two external signal input ports, one external signal input port is connected with the amplitude limiter, and the other external signal input port is connected with the external signal receiver; and the energy generated by the explosion device cuts off the conductor pre-fracture. Based on a transformer-free circuit structure, intelligent control of a circuit trigger signal and an external trigger signal on the fuse is realized, high and low voltage isolation is realized, the current can be automatically cut off at the moment when an external control signal is received or the current exceeds a detection threshold, and finally the purpose of improving the safety of an electrical system is achieved.

The invention provides a power-on and power-off control method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining module enabling input which is used for indicating power-on or power-off; determining each target power supply to be controlled and a control time sequence of each target power supply from each power supply based on the module enabling input, and generating a trigger signal and an expected output for each target power supply; and determining a first target power supply to be controlled based on the control time sequence among the target power supplies, sending a trigger signal to the first target power supply, and sending a trigger signal to the next target power supply after the output of the first target power supply is consistent with the expected output, thereby overcoming the defect that the power-on and power-off time sequence control of the complex equipment in the traditional scheme depends on an external circuit. The power-on and power-off control circuit has the advantages that the defects of difficulty in accurate control in the prior art are overcome, accurate control of any power-on and power-off time sequence can be realized without a complex circuit, simplicity, high efficiency and accuracy of a control process can be guaranteed, and sleep and sleep functions of equipment can be compatible.

The invention discloses a non-selective membrane mixing system for solar seawater desalination and all-weather salinity difference energy collection. The non-selective membrane mixing system comprises a chamber for accommodating seawater; the salinity gradient energy power generation module is arranged at the bottom of the chamber and comprises a cation electrode and an anion electrode which are connected through an external circuit, and the cation electrode and the anion electrode are immersed in the seawater in the chamber; the salinity gradient energy generation module comprises an evaporator and a condensation cover, the evaporator floats in the seawater in the cavity, and the condensation cover is located at the top of the cavity; wherein no ion selective membrane is arranged between the cation electrode and the anion electrode. According to the system, photo-thermal evaporation fresh water production and salinity gradient energy power generation / energy storage processes are coupled, and membrane-free all-weather salinity gradient energy collection is realized.

The utility model discloses a wake-up conduction structure used on a key switch, comprising a guide core, a moving plate which is arranged on the side edge of the guide core and is elastically bent downwards as a whole, and a static plate arranged below the moving plate, at least one convex edge is formed on the side edge of the guide core, the moving plate comprises at least one moving plate support arm which transversely extends towards the convex edge, and the static plate is arranged below the moving plate. The movable piece support arm is driven by the protruding edge to be in contact with or separated from the static piece under the acting force that the guide core is pressed by external force, and the movable piece and the static piece are electrically connected with an external circuit. The device can be applied to shaft bodies such as a Hall magnetic shaft and an optical axis, the application range is wide, the conduction structures of the shaft bodies such as the Hall magnetic shaft and the optical axis are awakened to realize signal transmission when the device is pressed, the conduction structures of the shaft bodies such as the Hall magnetic shaft and the optical axis are not interfered when the device is not pressed, and the shaft bodies such as the Hall magnetic shaft and the optical axis enter dormancy; therefore, the purpose of saving the electric quantity of the wireless keyboard is achieved, power consumption is reduced, the service life of the wireless keyboard is prolonged, and people can use the wireless keyboard conveniently.

The invention discloses a GIL electromagnetic property detection method and system based on field circuit-mechanical coupling, and the method comprises the steps: building an electromagnetic field-circuit-mechanical coupling mathematical model based on a circuit mathematical model through employing a stiffness matrix of a magnetic vector position, a stiffness matrix of a conductor eddy current, and a load matrix of a conductor conduction current; engineering sections are divided, a finite element two-dimensional simulation model is built, an equivalent external circuit is built, coupling connection is conducted through an external circuit port voltage matrix, and an electromagnetic property detection model of the GIL is obtained; performing iterative solution to obtain transient electromagnetic response of each engineering section, wherein the transient electromagnetic response comprises magnetic flux density, current density and node transient electromagnetic force; detecting whether electromagnetic response abnormity exists in the actual operation process of the GIL or not; and simulating the electromagnetic stress of the GIL component in the abnormal engineering section in the three-dimensional structure field by adopting harmonic response analysis, and checking the electromagnetic and mechanical characteristics of the GIL. According to the method, the electromagnetic characteristics of the GIL can be simulated more accurately, the applicability is wide, the operation speed is high, and guarantee is provided for GIL short-circuit fault monitoring and safe and stable operation.

An acceleration sensor circuit is disclosed. The acceleration sensor circuit includes a package; an accelerometer to generate acceleration data samples during a peak tracking window; a sample register, to store the acceleration data samples; an acceleration calculation digital circuit, to calculate an acceleration magnitude sample based on the stored acceleration data samples; a peak register, to store a current peak acceleration value; a sample compare circuit, to compare the acceleration magnitude sample to the current peak acceleration value, where the peak register is configured to replace the current peak acceleration value with the acceleration magnitude sample in response to the sample compare circuit determining that the acceleration magnitude sample is greater than the current peak acceleration value; and a memory, configured to store the current peak acceleration value, and to transmit the current peak acceleration value to an external circuit in response to an end of the peak tracking window.

The utility model discloses a switch-on and switch-off state monitoring module of an external circuit breaker of an electric energy meter, which comprises a shell, a rotating body, a circuit board, a position sensing device and an electric actuating mechanism used for controlling switch-on and switch-off of the circuit breaker are arranged in the shell, and the rotating body is in transmission connection with the electric actuating mechanism. The position sensing device comprises a first position sensing unit arranged on the rotating body and two second position sensing units arranged on the circuit board, and the first position sensing unit can move between the positions matched with the two second position sensing units to sense along with rotation of the rotating body. And when the circuit breaker is in an opening state and a closing state, the first position sensing unit is respectively located at positions correspondingly sensed by the two second position sensing units. The device can be integrated on the external circuit breaker of the electric energy meter, and has the advantages of simple and compact structure and high reliability.

The invention belongs to the technical field of batteries, and discloses a cover plate assembly and a battery, the cover plate assembly is connected with a pole group, the pole group is connected with a tab, the cover plate assembly comprises a cover plate body, a pole, lower plastic and a connecting piece, and the pole is arranged on the cover plate body; the lower plastic is arranged on one side, facing the pole group, of the cover plate body; the connecting piece is arranged on the side, facing the pole group, of the lower plastic, the connecting piece comprises a first welding part, a second welding part and a fusing part, the first welding part is connected with the pole, the second welding part is connected with the tab, the fusing part is arranged at the minimum section of the connecting position of the first welding part and the second welding part, and the tab is electrically connected with the pole through the connecting piece. Thus, the fusing part is located at the minimum cross section, the fusing part can be fused at the first time under the condition of abnormal overcurrent or high temperature, further accumulation of heat is prevented, electric connection between the pole group and an external circuit is rapidly cut off, and the safety performance of the high-capacity battery cell is improved.

The invention relates to a battery, a battery module and a vehicle. The battery comprises a shell, a battery cell and two connecting pieces, at least partial area of the shell is conductive, the battery cell is accommodated in the shell, the two connecting pieces are respectively conducted with two electrodes of the battery cell, one connecting piece is conducted to the conductive area of the shell, and the other connecting piece extends out of the shell and is separated from the conductive area of the shell. And the conductive area of the shell and the connecting sheet extending out of the shell are respectively used for being conducted with an external circuit. According to the battery disclosed by the invention, the connecting sheet conducted with the battery cell electrode is conducted to the conductive area of the shell, so that the battery disclosed by the invention can be conducted with an external circuit through the connecting sheet extending out of the shell and the conductive area of the shell, and thus the current transmission function of the battery disclosed by the invention is realized; the influence of extension of the connecting sheet on the sealing performance is reduced, so that the sealing performance of the battery is improved, and the cost is reduced.

The invention discloses a multipath digital quantity input signal acquisition module circuit, relates to a fire detection system, and aims to solve the problems that a signal input and output circuit of an existing acquisition module is easily interfered by an external circuit and is poor in reliability. According to the invention, a power conversion circuit converts 220V alternating current into power supply voltage of an MCU control circuit and working voltage of a signal input circuit; the signal input circuit is used for acquiring a module switch key state and detector alarm information and outputting an acquisition signal; the signal input circuit is provided with multiple paths of input and output signals, and each path of input and output signals work independently; and the MCU control circuit is used for receiving the acquisition signal output by the signal input circuit and controlling power supply output and an alarm indicating lamp according to the acquisition signal. The beneficial effects are that each input signal acquisition circuit works independently through an optocoupler, the reliability is high, and the anti-interference capability is strong.

The invention belongs to the technical field of power electronics, and discloses a global efficiency optimization-based four-switch Buck-Boost + LLC integrated topology modulation method, which comprises the following steps of: determining an optimal working point under a specified working condition point through three constraint conditions of gain, soft switching and loss according to three degrees of freedom, namely two duty ratios d1 and d2 and a phase shift angle phi; and pulse width modulation and phase shift modulation are carried out on the integrated topology. Correspondingly, the invention provides a controller which is used for executing the specific steps of the modulation method of the four-switch Buck-Boost + LLC integrated topology based on global efficiency optimization in the invention. According to the modulation strategy provided by the invention, the loss of the four-switch Buck-Boost + LLC integrated topology in a wide input range can be reduced while soft switching in a full-load range is ensured, and an external circuit does not need to be additionally arranged, so that the integrated topology has high power density and high efficiency.

A draw in and out apparatus and a cart apparatus transporting the same are disclosed. A draw in and out apparatus according to an aspect of the present disclosure may include a first support unit detachably coupled to an external distribution board; a second support unit movably coupled to the first support unit; a third support unit movably coupled to the second support unit; and a power unit detachably coupled to the third support unit, and configured to be coupled to or detachable from an external circuit breaker, wherein the power unit includes a key withdrawably accommodated in an insertion space provided in the circuit breaker; and a motor member coupled to the key and configured to rotate the inserted key in any one direction of the clockwise direction and counterclockwise direction.

The utility model provides a film thermal printing head, and relates to the technical field of printing equipment. Comprising a ceramic substrate, a heat storage layer, a resistance layer, a conductive layer, a protective layer and a connecting layer, the connecting layer is arranged between the resistance layer and the conducting layer so as to improve the binding force of the resistance layer and the conducting layer; the conductive layer comprises a copper metal layer and a nickel metal layer, and the conductive layer and the connecting layer jointly form a conductor layer used for connecting an I C assembly; and the IC assembly is welded on the conductor layer, and the IC assembly is provided with a silver finger on the heat storage layer, wherein the silver finger is used for being directly welded with an external FFC / FPC (Flexible Printed Circuit / Flexible Printed Circuit) in use, so that a film thermal printing head structure without the FFC / FPC is formed. According to the scheme, a circuit board on the ceramic substrate is omitted, the external circuit board is directly welded through the silver finger, the structure of the thin film thermal printing head can be optimized, and the size of the thin film thermal printing head is further reduced.

An enamel rating process that aids determination of the location of a defect in a lacquer coating of a metal can by connecting the can to at least one contact of an external circuit; inserting an electrode into the can; filling the can with an electrolyte while applying a voltage to the electrode; and sensing any current flowing through the external circuit during filling of the can; wherein the level of the electrolyte upon sensing of a predetermined level of current flow is determined to identify the location of the defect.

The utility model relates to the technical field of new energy application, in particular to a new energy automobile anti-disengagement connector which comprises a first connecting assembly and a second connecting assembly which are arranged in a matched mode, and the outer end of the first connecting assembly is fixedly connected with a locking ring in a sleeved mode. The first connecting assembly comprises a first connecting base, a wire sleeve and a first limiting clamping plate, the wire sleeve and the first limiting clamping plate are arranged at the two ends of the first connecting base, the outer end of the wire sleeve is fixedly connected with a wire tail base, and the first connecting assembly further comprises a first limiting protrusion fixedly connected with the first connecting base. Through the first connecting base and the second connecting base which are annularly arranged in a matched mode, the effect of conveniently installing and fixing the external circuit connecting end and the circuit connecting base is achieved, and meanwhile the circuit connecting end and the circuit connecting base can be conveniently connected and fixed subsequently; and the effects of introducing and protecting an external line are achieved through the lead tailstock and the lead sleeve.

The utility model provides a thermal runaway temperature sensor with high thermal conductivity, high temperature resistance and high voltage resistance, which comprises an insulating high-temperature-resistant packaging sleeve, a temperature sensing resistor, a lead electrically connected with an external circuit, and a high-thermal-conductivity shell, the temperature-sensitive resistor and a welding point of the temperature-sensitive resistor and the wire are wrapped and packaged in an insulating high-temperature-resistant packaging sleeve to form a temperature-sensitive resistor insulating temperature-resistant wrapping head, the whole temperature-sensitive resistor insulating temperature-resistant wrapping head extends into a high-heat-conduction shell, the shell is filled with high-temperature-resistant pouring sealant, and the other end of the wire extends out of the shell. The insulating high-temperature-resistant packaging sleeve adopts a high-temperature-resistant heat-shrinkable tube, and the high-temperature-resistant heat-shrinkable tube is encapsulated, so that the curing time of a common packaging material is shortened, and the production efficiency is improved; the high-temperature-resistant heat shrink tube not only enables the temperature sensor product to have the advantage of high temperature resistance, but also has better physical insulation and special voltage resistance than common packaging materials, and improves the insulation and voltage resistance of the temperature sensor product.

A sensing device (100) for collecting a motion signal of a target object and a wearable device comprising the sensing device (100). The sensing device (100) comprises a first sensing unit (120) arranged on a first side face (110-a), facing a target object, of a flexible substrate (110). An electric signal generated by a first sensing unit (120) is conducted to a target position (A) through a first conductive channel (111) arranged on a flexible substrate (110), and the target position (A) is farther away from a target object relative to a first side face (110-a), so that the connection position of the sensing device (100) and an external circuit can be away from the first side face (110-a). The first side surface (110-a), facing the target object, of the sensing device (100) can be kept flat, and non-uniform deformation of the first sensing unit (120) of the first side surface (110-a) is avoided, so that the working stability of the sensing device (100) is improved. Meanwhile, the first side surface (110-a) is kept flat, so that the foreign body sensation when the sensing device (100) is worn can be reduced, and the wearing comfort of the sensing device (100) is improved.

The invention relates to an engine load throwing high-voltage surge suppression circuit. The engine load throwing high-voltage surge suppression circuit comprises a detection module, a control module and a discharge module. The detection module responds to a first detection voltage and transmits the first detection voltage to the input end of the control module, and the first detection voltage is a voltage greater than a preset threshold voltage; the input end of the control module responds to the first detection voltage, and the output end of the control module outputs a first signal; the first input end of the discharge module responds to the first signal and is conducted, so that the second end of the discharge module is connected with the positive electrode of the battery, the third end of the discharge module is connected with the negative electrode of the battery, a parallel loop of the discharge module and the battery is formed, the discharge module serves as a load of an external circuit for discharging of the external circuit, the load throwing condition can be eliminated, and the service life of the battery is prolonged. The breakdown of circuit components caused by high-voltage surge generated by sudden current change of an external circuit of the engine is effectively inhibited, and a battery management system is protected.

The embodiment of the utility model provides a battery cell assembly, a battery pack and electric equipment, and relates to the technical field of energy storage. The battery cell assembly comprises a cover plate and an alarm device, the cover plate is provided with a pole, the pole comprises a protector, a battery cell is connected with an external port through the protector to form a current path, and when the protector meets a disconnection condition, the current path is disconnected; the off condition includes at least one of a current exceeding a first threshold and a temperature exceeding a second threshold. The alarm device is connected with the protector and gives an alarm when the temperature exceeds a third threshold value, and the third threshold value is smaller than the second threshold value. According to the embodiment of the invention, prompting and alarming can be carried out and the external circuit can be timely disconnected under the condition of short circuit or overheating in the battery cell, so that the safety of the battery pack is improved.