81results about "Electrothermal relays" patented technology

Electrically controlled solid-state thermal switches and methods of controlling heat flow. An electrostrictive material is electromagnetically coupled to first and second electrodes that provide an electric field to the electrostrictive material. Different portions of the electrostrictive material are thermally coupled to each of a heat sink and a thermal load so that heat flowing from one into the other passes through the electrostrictive material. A control voltage is applied to the electrodes to selectively generate the electric field, thereby selectively altering the thermal conductivity of the electrostrictive material. The heat sink and thermal load are thereby selectively thermally coupled to each other in dependence on the control voltage.

The utility model belongs to the technical field of relays, and particularly relates to a thermal relay, which comprises a shell provided with three partition plates. Each thermosensitive unit comprises a limiting block, a metal ring and a heating device, the heating device comprises a heating plate, a fixing plate, a wire inlet port and a wire outlet port, the limiting block is recessed inwards from the side wall to form a recessed part, the metal ring is arranged in the recessed part, and the heating plate is wrapped by the metal ring; each transmission unit comprises a connecting block, an elastic piece and a transmission plate; and the switching unit comprises a guide plate, a push rod, a normally-closed contact and a movable contact, one end of the guide plate is connected with the push rod, the movable contact is fixedly connected with the side wall of the partition plate close to the push rod, the normally-closed contact is fixed on the push rod, and the normally-closed contact and the movable contact are correspondingly arranged. The thermal relay is high in reaction speed and effectively prevents overload damage of the motor.

The utility model discloses a PTC (Positive Temperature Coefficient) temperature relay, which comprises an outer shell and a plurality of printed circuit boards arranged in the outer shell, the printed circuit boards are fixed through welding, and orthographic projections of the printed circuit boards are overlapped; the PTC temperature relay detection circuit is arranged on the printed circuit board; the PTC temperature relay detection circuit comprises a plurality of circuit modules, and the plurality of circuit modules are arranged on a plurality of printed circuit boards. According to the PTC temperature relay detection circuit, the plurality of circuit modules are respectively arranged on the plurality of printed circuit boards according to the difference of different functional modules in the PTC temperature relay detection circuit, and the space occupied by the circuit boards is reduced through the structural design of the circuit boards and the mutual overlapping of orthographic projections of the printed circuit boards.

The utility model discloses a thermal relay mounting seat structure, which belongs to the technical field of thermal relays and comprises a mounting plate, the surface of the mounting plate is fixedly connected with an adjusting bin, the inside of the adjusting bin is fixedly connected with a bearing so that a first rotating shaft is arranged inside the adjusting bin in a penetrating manner, and the surface of the first rotating shaft is fixedly connected with a transmission worm. The surface of the adjusting bin is fixedly connected with a bearing, so that a threaded pipe is arranged in the adjusting bin in a penetrating manner, the surface of the threaded pipe is fixedly connected with a transmission worm gear, and the transmission worm is meshed with the transmission worm gear. When a worker uses the device to install the thermal relay, the worker only needs to drive a first rotating shaft to rotate through a rotary knob, and under the cooperation of a transmission worm and a transmission worm gear, a limiting screw rod in a threaded pipe can move into a positioning groove, so that the effect of protecting the thermal relay is achieved.

A thermodynamic relay gadget includes a relay oscillator and an on-chip controller. The relay oscillator has a time dependent mass or time dependent frequency that is controllable, by the on-chip controller. The relay gadget is configured to relay thermodynamic information in analog form between an output oscillator of a first energy-based model and an input oscillator of a second energy-based model.

The utility model provides a thermal overload relay base convenient to install, which comprises a relay base, a clamping groove is arranged at the bottom of the relay base, a movable buckle is movably arranged at the front part of the clamping groove, a fixed buckle is arranged at the rear part of the clamping groove, an inner cavity is arranged at the front part of the relay base, and a driving gear is rotatably arranged in the inner cavity. Transmission gears are arranged on the two sides of the driving gear in a meshed mode, two sliding grooves are formed in the two sides of the surface of the clamping groove in parallel, lead screws are rotationally arranged in the sliding grooves and connected with the transmission gears, sliding blocks are arranged on the two sides of the top of the movable buckle, and the sliding blocks are arranged in the sliding grooves in a sliding mode and connected with the lead screws in a threaded mode. According to the utility model, the transmission gear drives the screw rod to rotate by rotating the driving gear, and the sliding block drives the movable buckle to move towards the fixed buckle, so that the relay base can be mounted on the guide rail, and the relay base can be suitable for mounting guide rails with different width sizes by adjusting the distance between the movable buckle and the fixed buckle; and the installation applicability is improved.

The application relates to a wiring power-off integrated relay and a cable connection and protection method, which comprises a trapezoidal cylinder body, a plurality of piston rods uniformly arranged around the outer periphery of the trapezoidal cylinder body; an easy sublimation substance is arranged in the cylinder body; a long strip arc surface-shaped conductive bridge is fixed to the outer end of the piston rod; the outer end of the conductive bridge is covered with a long strip arc surface-shaped insulating baffle; electric connectors for connecting external wires are arranged on the two end faces of the trapezoidal cylinder body respectively; the piston rod drives the conductive bridge to simultaneously electrically contact or disconnect with the two electric connectors; in the initial state, the insulating baffles are circumferentially enclosed and start to cover the wires with wire insulation skins; the wiring power-off integrated relay and the cable connection and protection method can realize wire connection and relay circuit protection in one, realize integration of the whole with the wires, are small in size, and do not need to be installed in an electric box or a switch cabinet.

The utility model discloses a thermal overload relay convenient to connect, which comprises a thermal overload relay body, a plurality of wiring terminals are arranged at two ends of the thermal overload relay body, and the wiring terminals are provided with conductive plates. A first fixing part and a second fixing part which are step-shaped are arranged at the upper part and the lower part of each current-conducting plate, fastening screws are arranged on the first fixing part and the second fixing part, a plurality of heat dissipation fins are arranged on the back surface of each current-conducting plate at equal intervals, a base is arranged at the bottom of each current-conducting plate, and a partition plate is arranged on each base and is arranged between the current-conducting plates. Through the step-shaped first fixing part and the step-shaped second fixing part, the positions of the copper noses fixed on the first fixing part and the second fixing part are in an up-and-down staggered relation, the two copper noses are prevented from interfering with each other, heat of the current-conducting plate is absorbed through the heat dissipation fins, temperature rise of the current-conducting plate is controlled, and heat dissipation efficiency is improved. The product has the advantages of interference prevention and temperature rise control.

The utility model relates to a tip-type contact assembly for a thermal relay. The technical problem to be solved by the utility model is to provide a pointed-end-type contact assembly for a thermal relay. According to the technical scheme, the movable contact comprises a movable contact plate and a movable contact, the movable contact plate comprises a movable contact plate arc portion, the left end and the right end of the movable contact plate arc portion are bent outwards to form a movable contact plate installation portion, a movable contact plate transition portion and a movable contact plate bearing portion in sequence, and the movable contact plate bearing portion is provided with a movable contact plate riveting boss. An arc positioning groove is formed in the movable contact plate arc part, the movable contact comprises a contact welding part, a contact riveting part and a silver coating, and a riveting boss bearing groove is formed in the movable contact plate riveting boss. The utility model has the advantages that the structure of the riveting boss of the movable contact plate can prevent the movable contact from shaking when being impacted through the contact orientation convex block after the movable contact is riveted, and the riveting boss clamping bulge can prevent the movable contact from falling off, so that the connection between the movable contact plate and the movable contact is firmer and tighter.

The invention provides a protection element capable of avoiding environmental load, preventing the influence of reflow mounting on the rapid fusing property of a fuse element, and realizing low cost. A protective element (1) is provided with: an insulating substrate (2); a first electrode (4) and a second electrode (5) provided on the insulating substrate (2); a fuse element (7) that is disposed on the surfaces of the first electrode (4) and the second electrode (5) and electrically connects the first electrode (4) and the second electrode (5); and a connection conductor (8) that connects the first electrode (4), the second electrode (5), and the fuse element (7), the fuse element (7) comprising a lead-free conductor and having a liquid phase point higher than the reflux heating temperature, and the connection conductor (8) having a liquid phase point lower than the liquid phase point of the fuse element (7) and having a solid phase point lower than the reflux heating temperature.

The invention relates to a device for tripping an electrical switch, comprising a tripping lever which is movable between a neutral position and a tripping position, wherein the device comprises an actuator with a first shaping and a second shaping and a control element that is moved by the actuator due to its shaping, which control element directly or indirectly moves the tripping lever, wherein the actuator having the first shaping moves the tripping lever into the tripping position and the actuator having the second shaping moves the tripping lever into the neutral position, and wherein the actuator is a shape memory alloy actuator.

The utility model discloses a novel thermal overload relay which comprises a relay body, an installation platform is arranged on the front end face of the relay body, guide blocks are fixedly installed on the two sides of the surface of the installation platform, and a connecting block is fixedly installed on the surface of the installation platform and located between the two guide blocks. The lower position of the rear end surface of the relay body is fixedly connected with an insertion block, and the front end and the rear end of the bottom surface of the relay body are respectively provided with a plurality of limiting grooves. In combination with the structural design of the utility model, through the cooperation between the guide block and the plugging block, when the thermal overload relay is installed and fixed, the situation of position offset or incorrect installation direction does not occur, the problems proposed in the background technology are effectively solved, and the practicability is better.

The utility model provides an adjusting device and a thermal overload relay. The adjusting device comprises an adjusting knob, an inner curve cam and a linkage rod. The adjusting knob is installed on a base of the thermal overload relay, so that the adjusting knob can rotate on the base. And the inner curve cam is connected with the adjusting knob, so that the inner curve cam can rotate along with the adjusting knob. The inner curve cam includes an inner contour line and an outer contour line. One end of the linkage rod is arranged on a compensation bimetallic strip of the thermal overload relay, and the compensation bimetallic strip is rotationally connected to the base. The other end of the linkage rod abuts against the inner contour line, and when the adjusting knob and the inner curve cam rotate, the linkage rod drives the compensation bimetallic strip to rotate. And the inner contour line of the inner curve cam is positioned on the concave surface of the arc surface, so that the adjusting knob can be accurately positioned, the accuracy of the adjusting device is improved, and the thermal overload relay can have a good overload protection effect aiming at external circuits with different overload currents.

The invention belongs to the technical field of power adapters, and particularly relates to an automatic overheating protection device for a power adapter, which comprises a main body, a machine body assembly is arranged at the top of the main body; a control assembly is fixedly connected to the top of the machine body assembly; through the structural design that the temperature sensor adopts the thermistor, the thermistor is installed on the cooling fin of the power adapter, and the controller is connected with the temperature sensor, the temperature change of the power adapter is monitored in real time, the temperature signal is received, and whether the power adapter is in an overheating state or not is judged; the problem that the temperature of the power adapter is too high, so that potential safety hazards such as electronic equipment damage and fire are caused is solved, the control response speed is improved, the power supply can be rapidly cut off when the temperature of the power adapter is abnormally increased, the potential safety hazards caused by overheating are avoided, and meanwhile the operation safety and stability are improved.

The invention belongs to the technical field of relays, and provides a mechanical drive bistable relay, which comprises a cylinder body, a mechanical drive mechanism, an opening and closing mechanism and a piston, and is characterized in that the mechanical drive mechanism, the opening and closing mechanism and the piston are arranged on the cylinder body; the mechanical driving mechanism drives the piston, the piston is driven by the mechanical driving mechanism to reciprocate in the cylinder body, the opening and closing mechanism is controlled to be communicated, and a circuit is controlled to be switched on and off. The novel bistable relay has the advantages of being small in size, high in electrical bearing capacity, high in electrical isolation capacity, good in communication effect and wide in use temperature range, and the novel bistable relay can be manufactured only through precision casting.

To provide a thermal overload relay that can be automatically assembled by simplifying assembly.SOLUTION: A push shifter 14 and a pull shifter 15 are provided, which are displaced by engaging with a plurality of bimetals 13U, 13V, 13W from one side and the other side in a displacement direction. The push shifter has an elongated hole formed in the displacement direction, and the pull shifter also has an elongated hole formed in the displacement direction. Projections 45a1, 45b1, 45a2, 45b2 protruding from an end face of a partition wall of a case 12 are formed with shifter fall-off prevention portions 48b, 49b that prevent the push shifter and the pull shifter from falling off when the shifter fall-off prevention portions are fitted into the elongated holes of the push shifter and the pull shifter and moved in the displacement direction.SELECTED DRAWING: Figure 7

A battery system includes a first electrical interface and safety switch connected to the first electrical interface and including a shape memory alloy element configured to deform from an unactuated configuration to an actuated configuration in response to reaching an activation temperature. A second electrical interface is connected to the safety switch, and the connection between the first electrical interface, the safety switch, and the second electrical interface enables electrical current to flow through a LIB cell. When the shape memory alloy element is the unactuated configuration, the safety switch directly engages the first electrical interface and the second electrical interface and enables electrical current to flow through the LIB cell. When in the actuated configuration, the safety switch disconnects from at least one of the first electrical interface and the second electrical interface and disables electrical current from flowing through the LIB cell.

Provided are a protecting device and a battery pack capable of preventing floating of a blowout member, preventing deformation of a meltable conductor, and maintaining predetermined current capacity and blowout properties. The protecting device 1 includes: a meltable conductor 2; and a blowout member 4 connected to one surface of the meltable conductor 2, wherein the blowout member 4 includes: an insulating substrate 3; and a deformation suppressing electrode 5 formed on a front surface 3a connected to the meltable conductor 2 of the insulating substrate 3 and connected to the meltable conductor 2 to suppress deformation of the meltable conductor 2.

The present embodiments relate to a shape memory alloy (SMA) sensor being part of a switch. For instance, an SMA sensor can include an actuator configured to engage with a locking mechanism that modifies the resistance of the SMA sensor when the locking mechanism is in the locked position. The resistance of the SMA sensor can be unmodified by an external magnetic field, increasing reliability of the SMA sensor resistance determining a state of the locking mechanism. Another example, SMA sensor is an SMA wire being in contact with a locking mechanism in the locked position, thereby increasing a resistance of the SMA wire in the locked position.

A thermal protection device, comprising: a first PTC device, arranged in a PTC circuit, and having a first input side, coupled to an input path of the PTC circuit, and having a first output side, coupled to an output path of the PTC circuit; a second PTC device, arranged in the PTC circuit, and having a second input side, coupled to the input path of the PTC circuit, and having a second output side, coupled to the output path of the PTC circuit; and a thermal link having a third input side, coupled to the first output side of the first PTC device and the second output side of the second PTC device, via the output path of the PTC circuit.

A locking device includes a sliding member, and a first memory alloy wire is configured to cooperate with the sliding member, and is used to apply a first force to move the sliding member to a locked position along a first sliding direction when electric energy is applied to the first memory alloy wire. The locking device also includes a second memory alloy wire, and the second memory alloy wire is configured to cooperate with the sliding member, and is used to apply a second force to move the sliding member to an unlocked position along a second sliding direction when electric energy is applied to the second memory alloy wire. The locking device also includes a position limiting structure, and when the sliding member moves to the locked position, the position limiting structure keeps the sliding member in the locked position, and when the sliding member moves to the unlocked position, the position limiting structure keeps the sliding member in the unlocked position.

The present invention provides a protection element, which prevents the element from being destroyed by discharging the pressure inside the box through an opening provided in the box, and can ensure proper insulation. The protection element comprises: a fusible conductor (3); first and second external connection terminals (7, 8) connected to both ends of the fusible conductor (3); and a box (6) having a lower shell (4) and an upper shell (5), one end of each of the first external connection terminal (7) and the second external connection terminal (8) being led out from the box (6), and a first opening (24) being formed on the surface of the box (6) facing the first external connection terminal (7), and a second opening (25) being formed on the surface of the box (6) facing the second external connection terminal (8).

The utility model discloses a thermal relay open-phase structure, and specifically relates to the thermal relay technology field, the thermal relay open-phase structure comprises a thermal relay and an open-phase assembly installed in the thermal relay, the open-phase assembly comprises a first linkage support, a second linkage support and a turnover mechanism, the second linkage support is arranged at the bottom of the first linkage support, and the turnover mechanism is arranged at the bottom of the second linkage support. A control rod and three bimetallic strips are arranged between the first linkage support and the second linkage support in a penetrating mode, the three bimetallic strips are all connected with the thermal relay, and the first linkage support comprises a first shell. According to the utility model, differential action is generated through movement between the first shell and the second shell, and the control rod is pushed to be in contact with the turnover mechanism, so that the thermal relay can be accelerated to act when a phase failure occurs, and compared with the prior art, the first shell, the second shell and the control rod form a differential mechanism in a space form; the high-efficiency open-phase protection action of the thermal relay is ensured, and the implementation of open-phase protection is facilitated.

A thermodynamic relay gadget includes a relay oscillator and an on-chip controller. The relay oscillator has a time dependent mass or time dependent frequency that is controllable, by the on-chip controller. The relay gadget is configured to relay thermodynamic information in analog form between an output oscillator of a first energy-based model and an input oscillator of a second energy-based model.

The present embodiments relate to a shape memory alloy (SMA) sensor being part of a switch. For instance, an SMA sensor can include an actuator configured to engage with a locking mechanism that modifies the resistance of the SMA sensor when the locking mechanism is in the locked position. The resistance of the SMA sensor can be unmodified by an external magnetic field, increasing reliability of the SMA sensor resistance determining a state of the locking mechanism. Another example, SMA sensor is an SMA wire being in contact with a locking mechanism in the locked position, thereby increasing a resistance of the SMA wire in the locked position.

A small independent thermal overload relay comprises a shell, a wiring system, a bimetallic strip, a guide plate structure and an actuating mechanism, the wiring system comprises a plurality of wiring units, and each wiring unit comprises a first wiring terminal, a first contact plate, a second contact plate and a second wiring terminal. The first wiring terminal and the second wiring terminal are arranged on the two sides of the bimetallic strip in the length direction of the shell, and the bimetallic strip is electrically connected between the first contact plate and the second contact plate. According to the small-sized independent thermal overload relay, the wiring system, the guide plate structure and the actuating mechanism are arranged along the height direction of the shell, the plurality of wiring units are arranged along the width direction of the shell, and the contact plate, the wiring terminal and the bimetallic strip are arranged along the length direction of the shell, so that the overall structure of the thermal overload relay is compact and ordered; and the wiring terminal of the wiring unit is connected with the contactor for use through wiring, so that the thermal overload relay can be independently installed and is suitable for contactors of different models.

A battery system includes a first electrical interface and safety switch connected to the first electrical interface and including a shape memory alloy element configured to deform from an unactuated configuration to an actuated configuration in response to reaching an activation temperature. A second electrical interface is connected to the safety switch, and the connection between the first electrical interface, the safety switch, and the second electrical interface enables electrical current to flow through a LIB cell. When the shape memory alloy element is the unactuated configuration, the safety switch directly engages the first electrical interface and the second electrical interface and enables electrical current to flow through the LIB cell. When in the actuated configuration, the safety switch disconnects from at least one of the first electrical interface and the second electrical interface and disables electrical current from flowing through the LIB cell.