15 results about "Resettable fuse" patented technology

The invention relates to the technical field of electrical control and circuit protection, and discloses an anti-overcurrent building controller which comprises a protection mechanism, a sealing mechanism is arranged on the front face of the protection mechanism, a control mechanism is arranged at the bottom of the protection mechanism, and the outer side of the control mechanism is fixedly connected with the interior of the protection mechanism. And the outer side of the sealing mechanism is inserted into the protection mechanism. According to the building controller with the anti-overcurrent design, the reliability and redundancy of overcurrent protection are improved, when a certain resettable fuse breaks down, other resettable fuses can still work normally, accurate protection of a circuit is achieved, damage to the service life of the circuit is reduced, early warning information is sent to a monitoring center and wireless communication equipment through the controller, and the safety of the monitoring center and the wireless communication equipment is improved. And the safety of the equipment is remotely processed, so that a worker can conveniently manage a plurality of building controllers in a centralized manner, know the operation state of the equipment in real time and perform unified scheduling and management, and maintenance personnel do not need to run around to check the situation.

1. Name of the designed product: solid state relay (resettable fuse). 2. Use of the designed product: used in control circuit. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: front view.

The invention discloses an electromagnetic valve open and short circuit detection system for energy storage, and the system comprises an input voltage detection module which is used for detecting the power supply voltage of an electromagnetic valve; the current detection module is used for detecting the current when the electromagnetic valve works; the voltage detection module is responsible for detecting post-stage voltage of the resettable fuse; the differential voltage detection module is used for detecting a voltage difference value when the electromagnetic valve is used; the output control module can control the on-off of the electromagnetic valve; and the single-chip microcomputer micro-control module can collect detection values of the input voltage detection module, the current detection module, the voltage detection module and the differential voltage detection module and regulate and control the output control module according to the detection values. According to the system, the open circuit state and the short circuit state of the electromagnetic valve can be detected at the same time, the whole scene where 24V voltage is not provided and 24V driving voltage is provided is covered, the problem that a traditional detection circuit is single in function is solved, and comprehensive monitoring of the working state of the electromagnetic valve is achieved by accurately collecting voltage signals of all modules.

The invention discloses a battery management circuit module and mobile power supply equipment. The battery management circuit module comprises an external connection port, a battery connection port, a bidirectional power conversion unit, a charging and discharging switch unit, a non-resettable fusing unit and an intelligent management unit. Wherein the bidirectional power conversion unit is used for performing bidirectional voltage conversion between an external connection port and a power bus node; the charging and discharging switch unit and the non-resettable fusing unit are connected in series between the power bus node and the positive electrode interface of the battery connection port to form a high-side protection framework; the intelligent management unit is used for calculating the electric quantity state based on an impedance tracking algorithm and outputting a driving signal to the non-resettable fusing unit when a fault is detected. According to the invention, a high-side protection architecture is adopted to ensure stable communication, and a fault loop is physically cut off in combination with an active fusing mechanism, so that the safety and reliability of high-power fast charging are improved.

An intrinsically safe battery assembly includes a battery pack including at least one battery and a protection circuit connected in series with the battery pack. The protection circuit includes the following elements connected in series: at least one diode configured to prevent the battery pack from being reversely charged, at least one current limiting resistor configured to provide short circuit protection and a resettable fuse configured to provide over current protection.

The utility model relates to the technical field of resettable fuses, and discloses a combined resettable fuse which comprises a fuse body, the outer wall of the fuse body is fixedly connected with pins, the outer wall of the fuse body is provided with a connecting shell, the outer wall of the connecting shell is connected with an extension shell in a sliding mode, the inner wall of the extension shell is provided with a connecting assembly, and the connecting assembly is fixedly connected with the pins. A through hole is formed in the connecting shell in a penetrating mode, a limiting groove is formed in the connecting shell, and a fixing assembly is installed on the outer wall of the connecting shell. The connecting assembly comprises a limiting protruding block. According to the utility model, the fuse body is placed in the connecting shell and is fixed through the elasticity of the connecting shell; the other connecting shell is placed on the side of the extension shell, the extension shell slides to enable the limiting blocks to slide in the sliding grooves, and then the clamping blocks are clamped into the positioning grooves, so that a plurality of fuse bodies are quickly combined for use, the operation is simple and convenient, and the practicability and adaptability of the fuse in different scenes are improved.

This invention discloses a voltage and current limiting circuit for transformer output and a power supply device for explosion-proof floodlights, comprising: multiple voltage and current limiting modules connected in sequence, each module including a diode, a resettable fuse, a thyristor, and a resistor; this voltage and current limiting circuit can effectively limit the voltage and current jumps of the high-frequency pulse current output by the transformer, ensuring the stability and safety of the subsequent circuits, and its design is simple and low-cost, fully meeting the requirements of explosion-proof standards. Furthermore, due to the use of resettable fuses and thyristors, the voltage and current limiting circuit can maintain stable performance even under long-term high-load operation, without performance degradation or damage due to temperature rise, thereby greatly improving the overall safety and stability of the explosion-proof floodlight power supply device.

The utility model discloses a circuit device with over-current protection and alarm functions, which relates to the technical field of circuits and comprises a live wire L, a null line N and the following branches connected between the live wire L and the null line N. The main branch is sequentially connected with a diode, a first resettable fuse and an electric appliance in series. And one end of the first branch is connected to a node between the first resettable fuse and the diode in the main branch. According to the utility model, by arranging the first resettable fuse and the second resettable fuse, overcurrent protection of a circuit is realized, and an electric appliance is prevented from being damaged by overcurrent; the diode controls the current flow direction, and the circuit safety is improved; a divider resistor and a dropping resistor ensure that the voltage of each branch meets the working requirement of the element; the alarm timely feeds back the abnormal state of the circuit; the capacitor stabilizes voltage and reduces interference; the whole circuit is reasonable in structural design and complete in function, and reliability, safety and stability of a circuit system are improved.

An intrinsically safe battery assembly (1) comprising a battery pack (U) consisting of at least one battery (U1, U2, U3, U4) and a protection circuit (C) connected in series with the battery pack (U). The protection circuit (C) includes a diode (D) to prevent reverse charging of the battery pack (U), a current-limiting resistor (R) to provide short-circuit protection, and a resettable fuse (F) to provide overcurrent protection. Additionally, a single-point lubrication device (100) is provided, comprising a reservoir (20) for storing a lubricant and a power compartment (10) for housing power components. The reservoir (20) and the power compartment (10) are suitable for being detachably assembled as a single unit.The power components include an electric motor (M) and the intrinsically safe battery assembly (1) described above for supplying energy to the electric motor. The electric motor (M) is used to drive a pump mechanism (P) to force the lubricant in the reservoir (20) out of an oil outlet (21).

The invention discloses a battery box which comprises a box body, a battery mounting groove is formed in the box body and used for mounting a plurality of batteries, and conductive elastic pieces are arranged on the two sides of the battery mounting groove so that the batteries can be connected in series to supply power. A control switch, a control circuit board and a power connection socket are arranged in the box body, the control circuit board comprises a single chip microcomputer, an AD sampling module is arranged in the single chip microcomputer and used for collecting the voltage of the battery pack in real time, and a turn-off signal is output when the voltage is lower than 3.6 V; 3.6 V accurate threshold detection is realized through the single chip microcomputer, power supply is automatically cut off, over discharge and liquid leakage of the battery are effectively avoided, and the service life of the battery is prolonged; rechargeable management: the battery is supported to be independently taken out for charging, and power supply is automatically recovered after charging, so that the use cost is reduced, and the portability and the economical efficiency are improved; and multiple safety protection: integrating overcurrent protection (resettable fuse), low-voltage protection (triode electronic switch) and anti-reverse protection (diode), thereby comprehensively improving the safety and stability of the circuit.

The utility model discloses a regulator W terminal design circuit adapted to a 4V constant electric instrument panel, which comprises an HS-P terminal, an HS-W terminal and an HS-L terminal, the HS-P terminal is connected with one end of a resistor R34, one end of a resistor R35 and one end of a resettable fuse L2, the resistor R34, the resistor R35 and the resettable fuse L2 are connected in parallel, and the other end of the resettable fuse L2 is connected with the HS-W terminal. The other end of the resistor R34, the other end of the resistor R35 and the other end of the resettable fuse L2 are connected with a resistor R31 and a capacitor C27 and are connected to an HS-W terminal, discrete electronic materials are used for designing circuits, different instrument panel circuits can be matched, portability is high, and application is flexible. The circuit design is ingenious, the situation that a P-end phase signal is pulled down all the time when an automobile is started and stopped is avoided, and the problems that an instrument panel is mistakenly recognized and a pointer swings disorderly due to sudden speed change of a generator in the driving process of the automobile are solved. The development period is shortened, the development cost is reduced, and the market competitiveness is improved.

The utility model is suitable for the technical field of display, and provides a circuit board structure, an LED display unit and an LED display screen, the circuit board structure comprises a circuit board body and a temperature detection circuit, the temperature detection circuit comprises a plurality of resettable fuses which are connected in series, and when the temperature of any resettable fuse in the area where the resettable fuse is located is abnormal, the resettable fuse is switched on. The temperature detection circuit outputs a first signal; and the temperature abnormity processing module is electrically connected with the temperature detection circuit, the temperature abnormity processing circuit is used for outputting a first control signal when receiving the first signal, and the first control signal is used for controlling the power supply of the circuit board body to be switched off. According to the invention, the plurality of resettable fuses are arranged on the circuit board body, and the resettable fuses are connected in series to form the temperature detection circuit, so that the temperature detection circuit outputs the first signal to the temperature abnormality processing circuit to turn off the power supply when the temperature of any resettable fuse in the region where the resettable fuse is located is abnormal. Therefore, the circuit board cannot reach the firing temperature, and combustion is avoided.

The utility model relates to the technical field of fuses, and discloses a high-voltage surface-mounted PPTC resettable fuse which comprises a fuse body, the outer wall of the fuse body is fixedly connected with a first protective sleeve, the outer wall of the fuse body is fixedly connected with a second protective sleeve, the outer wall of the fuse body is provided with a heat dissipation assembly, and the heat dissipation assembly is fixedly connected with the protective sleeve. The heat dissipation assembly is used for dissipating heat of the fuse body; the heat dissipation assembly comprises a heat dissipation plate, one side of the heat dissipation plate is fixedly connected to the outer wall of the fuse body, the other side of the heat dissipation plate is fixedly connected with a plurality of heat dissipation fins, and the heat dissipation fins are evenly distributed on the other side of the heat dissipation plate in a linear array mode. According to the utility model, when the fuse body generates heat, the heat is conducted to the heat dissipation plate and then is transmitted to the heat dissipation fins, and the heat dissipation fins accelerate heat dissipation to the surrounding environment by increasing the contact area with air, so that the effect of effective heat dissipation of the fuse body is realized, and the stability of the fuse is improved.

The invention relates to a battery system based on resettable fuse loss and a system control method. The battery system includes: a battery; a resettable fuse connected between a first node connected to a positive electrode of the battery and a second node connected to an external connection terminal, and closed after a predetermined recovery time has elapsed after being turned off; and a fuse compensation circuit including an operation switch connected between the first node and the second node and a detection switch connected between a third node and ground, providing a voltage to the third node according to a result of comparing a voltage of the second node with a predetermined reference voltage, the fuse compensation circuit generates a first sensing voltage by performing resistance distribution on the voltage of the second node; and a main control unit (MCU) that controls a switching operation of the detection switch based on the first sensing voltage, in which the fuse compensation circuit controls a switching operation of the operation switch according to a second sensing voltage corresponding to a voltage of the third node.

The present invention relates to a battery system and a system control method based on a resettable fuse loss. The battery system includes: a battery; a resettable fuse connected between a first node connected to a positive electrode of the battery and a second node that is connected to an external connection terminal and closed after a predetermined recovery time after being opened; a fuse compensation circuit including an operation switch connected between the first node and the second node and a detection switch that is connected between a third node and ground, wherein a voltage according to a result of comparing a voltage of the second node with a predetermined reference voltage is provided to the third node, and generating a first detection voltage by resistance-dividing the voltage of the second node; and a main control unit (MCU) that controls a switching operation of the detection switch on the basis of the first detection voltage, wherein the fuse compensation circuit controls the switching operation of the operation switch according to a second detection voltage according to the voltage of the third node.