Protection circuit and battery

• Main Authors: TAN YUANJUN, XU DEGEN, HUANG ZHENXING, JIANG PING, SUN PENGFEI
• Format: Patent
• Language: Chinese; English
• Published: 29.08.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

The utility model relates to the technical field of battery protection circuits, and provides a protection circuit and a battery. According to the protection circuit provided by the invention, the first control unit is used for detecting the potential difference between the two ends of the connecting assembly of the safety element to replace a setting mode that a precision resistor is arranged and the first control unit is used for detecting the potential difference between the two ends of the precision resistor in the prior art, so that the high-power precision resistor is completely deleted; the internal resistance of the first loop serving as a large-current loop is reduced, the conditions that large-power elements are mutually heated and baked, the internal resistance drifts of the elements are increased due to high temperature, the elements are more heated when being baked, and vicious cycles are caused are improved, and the purpose of reducing temperature rise is achieved. In addition, as the precise re