13results about How to "Arcing suppression" patented technology

The invention discloses an electric arc dynamic suppression method for hot plugging of an electric meter connector, relates to the technical field of electric energy metering equipment, and aims to solve the problems of electric arc generation, overproof metering error and the like caused by passive protection and lack of dynamic cooperative control in the prior art. The core of the method is that gap distance and power grid voltage phase signals are acquired in real time through a microcontroller, and the plugging speed, the signal injection and the position fine adjustment are dynamically regulated and controlled in three stages of pre-contact, low-current transition and full connection; and a machine learning model is combined to optimize a parameter threshold value, a redundancy safety mechanism and a multi-phase electric meter cooperative control strategy, so that double management and control of arc peak energy and metering errors are realized. The method can actively inhibit arc generation, avoid connector ablation and insulation deterioration, guarantee metering continuity and accuracy, adapt to complex power grid and environment working conditions, and meet the precision requirement of the intelligent electric meter.

The present invention provides a battery pack comprising: a battery pack housing; a cell assembly including a frame disposed on the battery pack housing and battery cells housed in the frame; a mounting block disposed between the frame and the battery pack housing; and a first bolt securing the frame to the mounting block and spaced apart from the battery pack housing, wherein the mounting block includes an insulating layer disposed in a portion contacting the frame and a portion contacting the battery pack housing.

The invention relates to the technical field of power supply equipment, in particular to an isolating switch driving structure and a switch cabinet, and the isolating switch driving structure comprises an abutting structure which is arranged on the other group of insulators and is provided with two groups of abutting plates matched with the end parts of conducting rods; the rotating disc is rotationally installed on the supporting frame, a second protruding shaft is installed on the rotating disc, and the second protruding shaft is matched with a connecting groove formed in the abutting structure, so that the abutting structure can drive the two abutting plates to be close to or away from each other; the driven shaft is rotationally installed on the supporting frame, the driven shaft is connected with the rotating disc and a rotating shaft of the conducting rod through a differential structure, and when the driven shaft rotates, the abutting plate and the conducting rod can be driven to act alternately; and the storage assembly is connected with the driven shaft, the storage assembly can actively drive the driven shaft to rotate by storing energy, abrasion of the conducting rod is reduced, and hot melting caused by local overheating of the conducting rod is avoided.

The present application relates to a plasma chamber arc suppression method, device and radio frequency power supply system. The method comprises: obtaining the reflection coefficient in the plasma chamber through arc detection sampling; the reflection coefficient comprises an instantaneous reflection coefficient and an average reflection coefficient; comparing the absolute value of the difference between the instantaneous reflection coefficient and the average reflection coefficient with a set reflection coefficient threshold; if it is determined that an arc is generated in the plasma chamber according to the comparison result, freezing the working parameters of the last corresponding restoration node of the radio frequency power supply system through a state machine instruction, suspending arc detection sampling and cutting off the power output of the output end of the plasma chamber through a control module of a PID controller; after the arc in the plasma chamber disappears, instructing the control module of the PID controller to restore the power output of the output end and restore arc detection sampling according to the working parameters. High-precision arc suppression processing in the chamber is achieved.

This invention discloses a soft-switching control circuit and method for a power conversion device, electrically connected to both the power conversion device and an AC power supply. It includes a first relay and a second relay, with the power conversion device electrically connected to the AC power supply sequentially via either the first relay and the second relay or sequentially via the second relay and the first relay. The two ends of the second relay are connected in parallel to the two pins of a thyristor. The invention also includes a controller electrically connected to the first relay, the second relay, and the thyristor. The beneficial effect is that it ensures that both series-connected relays are in a zero-current or near-zero-current state at the instant of closing and opening. This fundamentally eliminates the huge surge current and arc erosion and impact on the contacts caused by traditional switching methods.

The invention discloses an electric aircraft power battery compartment system and a cooperative control method thereof. The system comprises a battery module, an airtight shell and helium, wherein the airtight shell wraps the battery module to form a main sealing cavity, and the cavity is filled with the helium. The system is also provided with an emergency gas film layer and an arc extinguishing nozzle array which are respectively connected with a helium source through a control valve. The control unit controls helium to be maintained at a first pressure in a normal state according to monitoring data of the sensor module so as to provide buoyancy compensation and gas spring vibration isolation at the same time; when the impact condition is met, helium is injected into the emergency gas film layer for boosting so as to form impact-resistant buffering; when the short-circuit condition is satisfied, helium is released from the nozzle for arc suppression. According to the invention, buoyancy weight reduction, vibration isolation, impact buffering and electrical safety protection are integrated.

The invention belongs to the technical field of power supply management, and particularly provides an alternating current and direct current power supply isolated output switching device, which comprises a power supply input and preprocessing module used for accessing an alternating current main power supply and a direct current standby power supply and performing preprocessing protection on the two power supplies respectively; the power supply detection and control module is used for acquiring electrical parameters of the alternating-current main power supply and the direct-current standby power supply in real time, judging a power supply state of the power supply according to an acquisition result and outputting a control signal; the relay isolation switching module comprises two relays respectively corresponding to the main power supply branch and the standby power supply branch, and realizes physical isolation and automatic switching of the AC / DC power supply based on the control signal; the output adaptation and protection module is used for providing a corresponding output branch according to the load type and protecting an output power supply; wherein the two relays adopt an interlocking design to ensure that the two relays are not conducted at the same time.

The utility model relates to a protective cover, in particular to a buckle type moving contact electric arc reverse spraying prevention protective cover, which comprises a rotating shaft knife pouch and a moving contact which are in running fit, the moving contact is provided with a cover body which at least partially wraps the moving contact, and the cover body is fixedly connected with the moving contact in a clamping manner. According to the utility model, the protective cover is arranged on the outer side of the moving contact of the circuit breaker, the protective cover is fixed on the moving contact in a clamping manner, the installation is convenient, the added protective cover prevents reverse spraying of electric arcs and has a very good cooling effect on the electric arcs, and an electric arc suppression effect is generated; the utility model also has the characteristics of simple structure, convenience in processing and easiness in assembly, and has strong practicability.

The utility model discloses a multilayer gradient type arc-resistant grading ring, and relates to the technical field of grading rings. Comprising a first grading ring, a second grading ring is arranged above the first grading ring, a third grading ring is arranged above the second grading ring, connecting devices are clamped to the outer walls of the first grading ring, the second grading ring and the third grading ring, fixing devices are clamped to the outer walls of the connecting devices, and mounting buckles are lapped to the outer walls of the connecting devices; the multi-layer gradient diameter design is matched with the electric field distribution characteristics of the high-voltage equipment, and the potential difference is balanced layer by layer from a top strong electric field area to a lower weak electric field area, so that the local electric field intensity is reduced, arc discharge is inhibited, and concentrated discharge is avoided; the transportation difficulty and the occupied space are reduced, and the installation process is simplified through the modes of clamping, bolt fixing and the like in combination with the pre-assembly function of the elastic piece and the limiting device during installation.

A Co-Cr-Pt-oxide sputtering target which contains 50 at% or more of Co, more than 0 at% and 20 at% or less of Cr, and more than 0 at% and 25 at% or less of Pt, with the remainder comprising one or more oxides and unavoidable impurities, and which is characterized by containing (A) a composite phase in which Co, Pt, and oxides are dispersed with each other, and (B) a metal Cr phase, 10 or more metal Cr phases having an equivalent circle diameter of more than 10 [mu] m and 100 [mu] m or less are included in a 1 mm * 1 mm observation field of view using an SEM having an observation magnification of 50 times.

The invention discloses an electronic miniature circuit breaker circuit board which comprises a circuit board body, and the circuit board body is provided with a power circuit, a logic processing circuit, a current sampling circuit, a voltage sampling circuit, a reference voltage circuit, an LED lamp indicating circuit, a zero cross detection band circuit, a key detection circuit and a relay control circuit. The power supply circuit is respectively connected with the logic processing circuit, the current sampling circuit, the voltage sampling circuit, the reference voltage circuit, the LED lamp indicating circuit, the zero cross detection band circuit, the key detection circuit and the relay control circuit. Compared with the prior art, the circuit board has the instantaneous and current overload performance of a traditional circuit breaker, the problem that an existing overvoltage and undervoltage protector lacks current protection can be solved, electronic control is added in the closing process of the circuit breaker, the circuit breaker can actively monitor the voltage waveform, closing is conducted when the voltage crosses the zero point, and the protection effect is good. Surge current caused when a traditional circuit breaker is switched on is greatly reduced, and the risk of equipment damage is reduced.

The protection element of the present invention comprises: a fuse element having a first end and a second end, and being energized from the first end toward the second end; a convex member and a concave member, which are arranged opposite to each other in a manner of sandwiching a cut-off portion; and a pressing mechanism, which applies elastic force in a manner of shortening the relative distance between the convex member and the concave member in a direction of sandwiching the cut-off portion, i.e., in a first direction, so that at least one pair of opposing surfaces of the convex portion of the convex member and the concave portion of the concave member, which intersect with the energization direction of the fuse element, are arranged close to each other in a plan view from the first direction, and the fuse element is cut at a temperature above the softening temperature of the material constituting the fuse element.

The utility model relates to the technical field of switch cabinets, and discloses a mining flame-proof high-low voltage switch cabinet, which comprises a cabinet body and a cabinet door, a plurality of inner box bodies are fixedly arranged in the cabinet body, two sides of each inner box body are respectively and fixedly provided with a wire inlet box and a wire outlet box, and a first cable joint and a second cable joint are respectively communicated with the wire inlet box and the wire outlet box; a base is fixedly installed at the bottom of the cabinet body, an air supply pipe is fixedly installed in the base, an air guide vertical pipe is fixedly installed on the surface of the air supply pipe and extends into an inner cavity of the cabinet body, a plurality of spray heads are arranged on the surface of the air guide vertical pipe, and a plurality of pressure relief one-way valves are fixedly installed on the side face of the cabinet body. According to the switch cabinet, the internal space of equipment is separated from the surrounding environment through the closed cabinet body, and inert gas is injected into the cabinet body through the gas supply pipe, so that dust and explosive gas can be prevented from entering the switch cabinet, generation of electric arcs can be effectively inhibited, a better explosion-proof effect is achieved, and the safety of the switch cabinet is greatly improved.