Lithium battery module

Abstract

The invention discloses a lithium battery module. The lithium battery module comprises a shell, a plurality of single batteries and a busbar, wherein the busbar comprises a plurality of conductive modules and a plurality of connection switching pieces. The plurality of single batteries are covered with the plurality of conductive modules in a one-to-one correspondence manner, each conductive module comprises a carrier plate, and a tab sticking block, a parallel contact and a series contact which are arranged on the carrier plate at intervals, the tab sticking block is electrically connected with tabs of the single batteries, the parallel contacts of two adjacent conductive modules are attached to each other, and the series contacts of two adjacent conductive modules are attached to each other; and a connecting switching piece is arranged between every two adjacent conductive modules, and each connecting switching piece comprises an insulating poking piece, a parallel patch and a seriespatch. The connecting states of every two adjacent single batteries can be switched only by pushing the insulating poking piece, so that two adjacent single batteries can be flexibly switched betweena series connection mode and a parallel connection mode, the assembly error-tolerant rate is improved, a busbar does not need to be selected, and the assembly difficulty of the lithium battery moduleis reduced.

Description

technical field [0001] The invention relates to a battery, in particular to a lithium battery module. Background technique [0002] The operating power of different electrical appliances is different. After the batteries are connected in series, the output current remains unchanged, but the voltage increases; after the batteries are connected in parallel, the output voltage remains unchanged, but the capacity and output current are improved. Therefore, developers connect the single batteries in series and parallel. A battery module is formed to meet the needs of each electrical appliance. [0003] In the current battery module production process, after a plurality of batteries are fixed, the tabs of adjacent batteries are connected by setting bus bars, and corresponding bus bars need to be selected for connection according to the connection relationship between the adjacent batteries, that is, the connection between the batteries Two different busbars are used in series and...

AI Technical Summary

Problems solved by technology

[0003] In the current battery module production process, after multiple batteries are fixed, the tabs of adjacent batteries are connected by setting busbars, and the corresponding busbars need to be selected for connection according to the connection relationship between adjacent batteries, that is, the connection between batteries Two different types of bus bars are used for series connection and parallel connection respectively, and the electrical connection mode between two adjacent batteries in the battery module needs to be planned in advance, and the corresponding type of bus bar is selected for connection. In actual operation, installation often occurs. The problem of wrong reflow and rework is required, and the fault tolerance rate is low, which is not conducive to the automatic production of battery modules

Images