Battery pack and preparation method

Abstract

The invention relates to a battery pack. The battery pack comprises a plurality of battery cells, a box body and an end plate assembly, wherein the box body comprises an accommodating cavity, and a plurality of limiting plates are fixedly arranged in the accommodating cavity in the first direction at intervals; the end plate assembly comprises a first end plate and a second end plate, the first end plate and the second end plate are oppositely arranged in the accommodating cavity in the second direction, the second direction is perpendicular to the first direction on the horizontal plane, and the first end plate and the second end plate are detachably connected with the limiting plate; and when the plurality of battery cells are stacked in the accommodating cavity in the first direction and the second direction, the plurality of battery cells can be limited by the multiple limiting plates to move back and forth in the first direction, and can be jointly limited by the first end plate and the second end plate to move back and forth in the second direction. Compared with the prior art, the battery pack provided by the invention can better clamp the battery cell, and can adapt to different battery cell sizes. The invention further provides a preparation method for preparing the battery pack, and the preparation method provided by the invention can improve the production efficiency of the battery pack.

Description

Technical field [0001] Technical Field The present invention relates to a battery, a battery pack, and more particularly to a method of preparation. Background technique [0002] Stop using the conventional battery pack in the housing space reserved in the cell stack design, it is necessary to previously stacked arrangement before preparing cell battery pack, then the good cell stack and then placed into cabinets limit in the bit space. This battery pack is the problem: First, the stacked batteries cabinets spatially fixed stop, when the stacked cell batteries need to consider whether the stopper can be mounted to the inner space, for limiting the cell stack space design of a gap between the mounting. This results in a limit space for batteries is more difficult to tightly limit. That batteries easily sway within the limit of space. Second, when the space limit is determined, if the size of the cell is changed, you may need to set up a new space limit, which results in lower limi...

AI Technical Summary

Problems solved by technology

The problems of this kind of battery pack are: first, the limited space for stacking batteries in the box is fixed. When stacking batteries, it is necessary to consider whether the batteries can be installed in the limited space. design installation clearance

This makes it difficult to tightly limit the cell in the limited space

That is to say, the battery core is easy to shake in the limited space

Second, after the limiting space is determined, if the size of the battery cell changes, it may be necessary to reset a new limiting space, which leads to a low compatibility of the limiting space in the box with the size of the battery cell

Third, due to the need to stack and arrange the cells in advance, and then transfer the stacked and arranged cells to the limited space, this increases the risk of damage to the cells during the transfer process, and the process of stacking, sorting and transferring is relatively Complicated, affecting the production efficiency of battery packs

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