Battery cell fusing bar

Abstract

The invention relates to the technical field of batteries and discloses a battery cell fusing bar. The battery cell fusing bar comprises a connection bar having a connection groove, the connection groove breaks the connection bar into two parts, one part is used to connect with a battery cell top cover, one end of the second part is connected with a battery cell body, the connection groove comprises a set of arc grooves configured to in tight contact with and connect with a set of molten beads, the molten beads are matched with the arc-shaped grooves in shape, the molten beads and the connection bar are conductors, and the melting points of the molten beads are lower than the melting point of the connection bar. According to the battery cell fusing bar, when the current is overloaded or short-circuited, and the current flows through the molten beads, the molten state occurs because the melting point of the molten beads is lower than that of the connection bar; and when the current is continuously overloaded, the molten beads are further reduced, so that a gap is formed between the molten beads and the connection groove, and the first part and the second part of the connection bar are disconnected, thereby playing a role in power-off protection.

Description

technical field [0001] The invention relates to the technical field of new energy power batteries, in particular to a battery cell fuse bar. Background technique [0002] At present, with the increasing miniaturization, portability and portability of electronic products, such as cameras, notebooks and mobile phones, the driving power of these electronic products is also developing in the direction of high capacity, high safety and portability. Its excellent characteristics such as high capacity are widely used in electronic products. [0003] The lithium battery includes a shell, a cover plate, and a battery cell, etc., wherein the battery core is placed inside the shell, the upper end of the shell has an upper end opening, and the cover plate is closed on the upper end opening of the shell, and then formed on the cover plate If the electrode terminals are connected, the lithium battery can be electrically connected with external electronic components to realize power suppl...

AI Technical Summary

Problems solved by technology

Because batteries are usually used at high risk or short-circuited during use, resulting in fire and combustion accidents, which are more likely to endanger personal safety

At present, the way to solve this problem is generally to connect some safety protection components outside the battery case to achieve the protection effect. For example, Chinese patent CN201610176088 and patent CN101567432 both achieve this purpose by adding some protective structural parts on the upper end of the battery case. The use of batteries has caused many restrictions, and the external components have increased the complexity of the battery structure and increased the cost of using the battery

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