Separator plate, and flexibly packaged power battery having separator plate

Abstract

The invention discloses a separator plate. The separator plate comprises a separator plate body used for being arranged between the cell main bodies of two adjacent monomer cells of a flexibly packaged power battery, and a filling part connected with the separator plate body and used for being embedded into a gap between every cell main body and a busbar. The separator plate is provided with the filling part which is embedded into the gap between every cell main body and the busbar, so when a mechanical action force parallel to the direction of a tab is applied to the cells, the mechanical action force can be borne by the separator plate, thereby hidden destroy troubles of the tab, caused by the mechanical action force, are eliminated, and the safety of a battery is improved; and the separator plate greatly increases a way for improving the heat conduction efficiency, and improves the heat performances of the battery. The invention also discloses the flexibly packaged power battery.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries. Specifically, the invention relates to a separator and a separator of a soft pack power battery with the same. Background technique [0002] With the development of new energy vehicles, due to the pursuit of cruising range, vehicle lightweight, power performance, etc., the energy density requirements of lithium-ion batteries as the main power source are getting higher and higher. The soft-pack power battery is packaged with aluminum-plastic film, and the shell is almost weightless. It has the characteristics of light weight, small size, high energy density, and the flexibility of module design, which has won the favor of the majority of power battery manufacturers. In the actual use of soft-pack power batteries, the single cells are usually connected in parallel or in series or series-parallel to make a module, and then combined into a battery PACK. Since the soft-pack power batter...

AI Technical Summary

Problems solved by technology

However, if figure 1 and figure 2 As shown, the single cell of the existing soft-pack power battery includes a cell body composed of pole pieces and tabs exposed outside the cell body, the cell body and separators are arranged alternately, and the tabs of the single cell Welded on the bus bar, there is a gap between the main body of the cell and the bus bar, as the sealing area of ​​the tab package, in the direction parallel to the length of the cell body, the tab will be damaged by mechanical force

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