3 results about "Low-voltage detect" patented technology

This invention discloses a safe and regulated power supply circuit for an MCU, relating to the field of MCU power supply technology. It includes a first voltage regulator module and a second voltage regulator module, which respectively provide the required multi-channel regulated power to the MCU module. An output detection module performs high-voltage or low-voltage detection on the first and second voltage regulator modules according to set high-voltage and low-voltage thresholds. When the first voltage regulator module experiences high or low voltage, a current amplification module controls the first voltage regulator module to power off and performs current amplification processing on the second voltage regulator module, so that the second voltage regulator module can maintain multi-channel power supply to the MCU module. Conversely, when the second voltage regulator module experiences high or low voltage, the second voltage regulator module is powered off and the first voltage regulator module performs current amplification processing to maintain multi-channel power supply to the MCU module. Compared with the prior art, the beneficial effects of this invention are: the safe and regulated power supply circuit for the MCU module improves the power supply safety and efficiency for the MCU module.

This utility model relates to the field of battery pack technology, and discloses a coolant leakage detection device, a battery pack, and an electrical device. By utilizing the low-voltage detection circuit and two detection lines of the BMS within the battery pack, it can accurately determine that the insulation failure is caused by coolant leakage, avoiding situations where high-voltage leakage from other parts is the cause, thus facilitating fault diagnosis. Furthermore, because the voltage of the low-voltage detection circuit is relatively low, the breakdown voltage of the air gap is relatively high. Even with a small electrical gap, it is not easily broken down under normal operating voltage. Therefore, the second ends of the two mutually insulated detection lines can be positioned close to the bottom of the battery pack via a fixing component, achieving more effective coolant leakage detection and improving detection sensitivity and accuracy. In addition, it has the advantages of real-time detection and rapid response, and its structure is relatively simple and easy to install.

The application provides a fault detection system and a vehicle. The fault detection system comprises a plurality of conversion modules, a plurality of detection modules, a plurality of signal processing modules and a control module. Each conversion module is capable of outputting a corresponding electrical signal based on the connection state of a low-voltage detection connector. The plurality of detection modules receive the electrical signal and output corresponding detection signals based on the electrical signal. The plurality of signal processing modules receive the detection signals. The control module receives the detection signals processed by the plurality of signal processing modules. The control module determines the on-off state of a high-voltage interlocking loop and the connection state of the plurality of low-voltage detection connectors based on the plurality of detection signals. The system can convert the connection state of the low-voltage detection connector into a high-low level detection signal recognizable by the control module, so that the control module can accurately know the fault location and the on-off state of the high-voltage interlocking loop based on the detection signal, improving the detection and troubleshooting efficiency and having high detection reliability.