8results about How to "Implement overcurrent protection" patented technology

This utility model discloses a low-voltage battery system for electric vehicles using sodium batteries, comprising a battery management module, several sodium-ion batteries connected in series to form a sodium-ion battery pack, several temperature sensors, a shunt, a discharge switch composed of several MOSFETs, a total positive output terminal, a total negative output terminal, and a one-button start switch. The system's output voltage matches the original vehicle's lead-acid battery, allowing for direct replacement without modifying the vehicle's electrical circuit, demonstrating strong adaptability. After undervoltage lockout, the system can be restarted by pressing and holding the one-button start switch, avoiding the cumbersome operation of external jump-starting and improving user experience. Temperature sensors monitor cell temperature in real time, preventing the impact of high / low temperatures on battery performance. The shunt, in conjunction with the total current detection unit, provides overcurrent protection, extending system lifespan. Sodium-ion batteries eliminate the need for complex protection for individual cells, reducing costs by more than 30% compared to lithium-ion battery systems, making them easier to scale up.

The utility model discloses an electric power cabinet power supply system, which comprises an explosion-proof electric power cabinet body, a protection box is fixedly arranged in an inner cavity of the explosion-proof electric power cabinet body, a circuit board is fixedly arranged on the rear side of an inner cavity of the protection box, and an overcurrent protection assembly is arranged on the surface of the circuit board. An electricity control assembly is arranged at the front end of the right side of an inner cavity of the anti-explosion power cabinet body and comprises a fixing shell fixedly connected to the right side of the anti-explosion power cabinet body, and a point contact switch is fixedly installed on the right side of an inner cavity of the fixing shell. According to the utility model, the explosion-proof electric power cabinet body and the cabinet door are used in cooperation, a relatively closed operation place is provided for electrical apparatus elements, the overcurrent protection assembly is used in cooperation, the main circuit of the explosion-proof electric power cabinet body can be protected in an overcurrent manner, and the power control assembly is used in cooperation, so that the explosion-proof electric power cabinet can be protected. A safe power supply mode of switching on power off and switching off power supply can be achieved, and the purposes of preventing current overload and effectively preventing safety accidents can be achieved.

This application relates to the technical field of circuit transformers, and in particular to a BUCK circuit based on the UC3843, comprising: a control module for receiving a transformer signal and generating a switch on / off signal based on the transformer signal; a drive module connected to the control module to receive the switch on / off signal and isolate and transmit the switch on / off signal to generate an isolation on / off signal; and a voltage adjustment module for receiving the isolation on / off signal and adjusting the voltage output according to the isolation on / off signal. This application converts a higher DC input voltage to a lower DC output voltage. The circuit achieves the same function as a transformer through a step-down method, reducing costs and improving space utilization.

The application relates to the technical field of power batteries, and provides a pole, a battery cover plate assembly and a battery. The pole comprises a pole body and a pole bottom plate. The pole bottom plate comprises a bottom plate main body section fixedly connected with one end of the pole body, a pole lug connecting section connected with a pole lug of a pole group, and a fuse section connected with the bottom plate main body section and the pole lug connecting section. The pole lug connecting section is arranged on at least one side of the bottom plate main body section along the length direction of the pole bottom plate, and the pole lug connecting section is connected with the bottom plate main body section through the fuse section. In the thickness direction of the pole bottom plate, the size A of the pole bottom plate and the size A1 of the fuse section satisfy 50% <= A1 / A <= 1. The pole provided by the application can save the traditional connecting sheet, reduce the number of parts in the battery assembling process, simplify the process steps, improve the production efficiency, and better realize the overcurrent protection of the battery and improve the safety of the battery.

The utility model discloses a kind of MCU power supply control circuit of linear drive device, controller and electric furniture, for realizing the zero power consumption standby of MCU and load wake-up.The technical scheme is: in standby state, MCU is completely powered off, but a DC output port remains electrified.When external load is connected to the DC output port and generates current, a passive detection circuit consisting of sampling unit and detection unit generates trigger signal, the trigger signal turns on a first switching unit, thereby connecting the power supply of MCU, wakes up MCU to perform subsequent tasks.The utility model triggers MCU power-on by passive detection mode, completely solves the standby power consumption problem of equipment, simple structure, response sensitive.

The utility model belongs to the technical field of power supply circuits, and particularly relates to an overcurrent protection circuit and electronic equipment. The overcurrent protection circuit comprises a gear switching module, a current sampling module and an overcurrent protection module; by setting the preset threshold value, the gear switching module can detect the magnitude of the input voltage, and the overcurrent protection module can change the threshold value of overcurrent protection according to whether the gear switching signal is received or not, so that the overcurrent threshold value is matched with the input voltage, and double-gear overcurrent protection is realized.

This application discloses an overcurrent protection circuit for multiple parallel loads. The circuit includes multiple target circuits, each including: a switch control module with its first terminal connected to the power supply, its second terminal connected to the input terminal of a voltage detection module, and its third terminal connected to the output terminal of the detection module; the output terminal of the voltage detection module is connected to one input terminal of the detection module; another input terminal of the detection module is connected to a reference voltage source; the voltage detection module converts the load current into a detected voltage and outputs it; the detection module compares the detected voltage with the reference voltage source voltage and outputs a load normal / fault signal; the switch control module disconnects the power supply from the load in the voltage detection module based on the load fault signal, thereby achieving overcurrent protection. This disclosure solves the technical problem in the prior art where overcurrent protection cannot adapt to different loads, achieving overcurrent protection for the power supply bus in multi-parallel load scenarios and improving adaptability to different loads.

The utility model discloses an over-current protection circuit and communication equipment, and relates to the technical field of over-current protection circuits, and the over-current protection circuit comprises a switching circuit, a detection circuit, a comparison circuit and a reference voltage circuit. The switching circuit is arranged between the first connecting end and the second connecting end; the detection circuit is arranged between the switching circuit and the first connecting end and is used for converting working current flowing through the switching circuit into detection voltage; the comparison circuit is connected with the detection circuit and the switching circuit and is used for comparing detection voltage with reference voltage and controlling the switching circuit to be switched on or switched off according to a comparison result; the reference voltage circuit is connected with the comparison circuit and is used for setting different reference voltages according to different current thresholds and outputting the reference voltages to the comparison circuit. The overcurrent protection circuit provided by the embodiment of the utility model can dynamically adjust and turn off the current threshold of the main loop, dynamically adapt to different working states of the load, and realize overcurrent protection of the main loop.