Composite protection element and battery pack

Abstract

The invention provides a composite protection element and a battery pack. The composite protection element includes an insulating outer casing, a plurality of terminal electrodes, a first heat generating component and a fusible conductor. The plurality of terminal electrodes include a first terminal electrode and a second terminal electrode, and the plurality of terminal electrodes respectively penetrate through the insulating outer casing and are respectively supported by the insulating outer casing. The lower surfaces of the two ends of the soluble conductor are respectively disposed on the first terminal electrode and the second terminal electrode, so as to form a bidirectional current path between the first terminal electrode and the second terminal electrode. The first heat generating component is arranged on or above the upper surface of the fusible conductor that is different from the plurality of terminal electrodes, or is arranged on the side surface or side of the fusible conductor, and the first heat generating element is The orthographic projection of the heat generating component on the fusible conductor does not overlap with the orthographic projection of the plurality of terminal electrodes on the fusible conductor, and one end of the first heat generating component is coupled to the fusible conductor.

Description

Technical field [0001] The present invention relates to a composite battery pack and the protective element, particularly to an over-current is provided, over-voltage or over-temperature protection and a composite battery pack and receiving the protective element of high charge and discharge currents. Background technique [0002] Most prior art composite electrode protection member disposed on the substrate, and the fusible conductor is arranged on the electrode, is applied to the motor associated with the next moment the operating current are quite high, even higher than 50A, the electrode disposed on the substrate the substrate can not withstand such a large flow of abnormal current, even the electrode and the substrate will result in an instant soluble conductor fuse, the generated heat and high pressure to be melted or broken. [0003] Also, the fusible conductor to be able to withstand the operating current or the rated current between 30A ~ 100A, cross-sectional area (widt...

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Problems solved by technology

[0002] In the prior art, the electrodes of composite protection elements are mostly arranged on the substrate, and the soluble conductors are arranged on the electrodes. In the future, the instantaneous working current related to motors will be quite high, even higher than 50A. The electrodes arranged on the substrate Neither the electrode nor the substrate can withstand the flow of such a large abnormal current, and even the electrodes and the substrate will be melted or broken due to the high heat and high pressure generated by the fusible conductor at the moment of fusing

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