Protection components and rechargeable battery packs

Abstract

The invention provides a protection element and a rechargeable and dischargeable battery pack. The protection element includes an insulating shell, a plurality of terminal electrodes, a first fusible conductor and at least one heating element. The plurality of terminal electrodes include a first terminal electrode and a second terminal electrode. The plurality of terminal electrodes penetrate through the insulating outer casing and are supported by the insulating outer casing. The first end of each terminal electrode is disposed outside the insulating casing. The second end of each terminal electrode is arranged in the insulating casing. There is a gap between the second end of the second terminal electrode and the base of the insulating outer casing. The first fusible conductor is arranged in the insulating shell. Both ends of the first fusible conductor are respectively electrically connected to the first terminal electrode and the second terminal electrode, so as to form a current path between the first terminal electrode and the second terminal electrode. At least one heating element is arranged below the second end of the second terminal electrode or above the overlapping area of ​​the first fusible conductor and the second terminal electrode. The first end of at least one heating element is electrically connected to the second end of the second end electrode.

Description

technical field [0001] The invention relates to a rechargeable and dischargeable battery pack and its protection element, and in particular to a rechargeable and dischargeable battery pack and its protection element which have overcurrent, overvoltage or overtemperature protection functions and can withstand high charge and discharge current. Background technique [0002] 3C products or electronic technology industry is becoming more and more important, especially in the industry of mobile and communication devices. Mobile devices pay attention to how to save energy, because the power supply of mobile devices depends on the battery system. Today's battery technology is limited by space on mobile devices, so the size of the battery is also quite limited. Under the condition of the same size, it is necessary to increase the battery capacity, which is the development direction of the battery industry today. The safety of the battery is an issue that everyone attaches great imp...

AI Technical Summary

Problems solved by technology

For example: if pressure is applied to one of the aforementioned terminal electrodes or the aforementioned fusible conductor, the solder may overflow between the aforementioned terminal electrode and the aforementioned fusible conductor due to external force, resulting in insufficient solder and poor welding

In addition, if no pressure is applied to one of the aforementioned terminal electrodes or the aforementioned fusible conductors, the distance between the aforementioned terminal electrodes or the aforementioned fusible conductors may be too large, and the solder may not be completely in contact with the solder, resulting in empty soldering.

The above problems are all possible causes of poor protection components

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