Electric core structure of round secondary lithium battery

Abstract

This invention relates to a core structure of a round secondary Li cell set in a cell tank and including a central rod, a pole roll and two conductive connecting pieces, in which, a connecting piece is set between the conductive connecting pieces and the positive or negative lead-out terminal on the cell tank to connect them as conductive connection, even if error exists between sizes of the coreand the tank, set of cells can be finished smoothly by the buffer of the piece since it is a flexible component of a molded bending structure.

Description

technical field [0001] The invention relates to a cell structure of a circular secondary lithium battery, in particular to a pole-roll electric energy collection and export structure inside the secondary lithium battery and a connection structure design between the cell and the battery lead-out terminal. Background technique [0002] see figure 1 , figure 2 As shown, this is the patent application "Cell Structure of Secondary Lithium Batteries" in US Patent Application No. 11 / 456119 previously filed by the inventor of the present application. After soldering a plurality of conductive handles, and then soldering or connecting them to the lead-out terminals of the battery one by one, the resulting process problems, such as the time-consuming and labor-intensive welding operations, the complex structure of components, and the difficulty and complexity of the process. [0003] Therefore, if figure 1 As shown, in this application, one end side of the positive and negative ele...

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Problems solved by technology

[0004] It is worth noting that the specifications and dimensions of each component in the above-mentioned secondary lithium battery structure must be quite accurate, otherwise if there is an error in the overall height of the battery can, or after the central rod is connected to the lead-out terminal If the height of the battery cell is wrong, the assembly of the battery cell and the battery can will not be able to be assembled correctly. The core interferes and cannot be assembled tightly with the tank body, or, when the overall assembled height of the battery cell is too short, one end of the battery cell can be smoothly assembled with one end of the battery tank, while the other end is due to The problem that it is too short to lock properly with the battery cover;

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