Soft package lithium battery and electric equipment

Abstract

The invention discloses a soft package lithium battery which comprises a battery box and a modular soft package battery pack. The modular soft package battery pack is welded in the battery box; the outer wall of the modular soft package battery pack and the inner wall, welded with the modular soft package battery pack, of the battery box are made of weldable materials. The soft package lithium battery is small in size and convenient to install, and the soft package battery pack is firm in connection and good in heat dissipation after installation is completed.

Description

technical field [0001] The invention relates to the field of batteries, in particular to soft-pack lithium batteries and electrical equipment. Background technique [0002] Soft-pack lithium batteries have the advantages of large battery capacity and small volume. For the soft-pack lithium battery of the electrical equipment with large power consumption, it often includes a battery box and several soft-pack battery packs, and several soft-pack battery packs are arranged in the battery box, and then the battery box is fixed on the electric equipment. The soft pack battery pack is formed by connecting multiple batteries in series and parallel, such as figure 1 As shown, the cells 1 of the existing pouch battery pack are fixed by the frame 6, and the frames 6 of each cell 1 are fixed in series by long connecting rods and bolts, so that each cell 1 is overlapped and fixed to form a pouch battery pack After a plurality of battery cells 1 and their frames 6 are connected in seri...

AI Technical Summary

Problems solved by technology

The existing soft-packed lithium batteries mainly have the following problems: 1. The soft-packed battery pack is connected to the battery box through bolts, connecting frames, etc., and the connecting frame needs to take up a lot of space. ; 2. A large number of bolts and connecting frames are required for the fixed connection between each soft pack battery pack. The fixed connection of each soft pack battery pack is inconvenient and will increase the weight of the formed soft pack lithium battery; 3. Each soft pack battery pack and soft pack The battery pack and the battery box are connected by a connecting frame and bolts. The connection is not stable, and misalignment is prone to occur when vibration occurs; The gap between the battery pack and the battery box is large, and the soft-pack battery pack will generate heat when it is working, and the air in each gap will form an insulation layer, which is not conducive to heat dissipation during work

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