Battery module, battery module group with battery module and automobile

Abstract

The invention discloses a battery module, a battery module with the battery module and an automobile, the battery module comprises a stacking body, a first tab protection shell, a second tab protection shell, a first side plate, a second side plate, a top plate, a bottom plate, a first connecting piece and a second connecting piece, the positive tab end parts of a plurality of battery cells are stacked and welded to form a positive tab region; the end parts of the negative electrode tabs of the plurality of battery cells are laminated and welded to form a negative electrode tab region, and the positive electrode tab region of one of two adjacent stacked bodies is laminated and welded with the negative electrode tab region of the other stacked body to form a cascade welding region; the first tab protection shell is respectively clamped with the upper end and the lower end of the cascade welding region; the second tab protection shell is clamped with the positive electrode tab region or the negative electrode tab region of the stacked body located at the end part, a convex edge is formed on one side, close to the stacked body, of the top plate and / or the bottom plate in the length direction of the stacked body, the convex edge corresponds to a gap between two adjacent battery cells in the stacked body, and a through glue filling hole and a through glue overflowing hole are formed in the top plate and / or the bottom plate.

Description

technical field [0001] The invention belongs to the field of batteries, and in particular relates to a battery module, a battery module with the battery module and an automobile. Background technique [0002] With the continuous popularization of new energy vehicles, the requirements for the use of power batteries in new energy vehicles are becoming higher and higher. In particular, users' requirements for the continuation mileage of new energy vehicles continue to increase. Common new energy vehicles, as the power battery pack of new energy vehicles, both in length and width are more than 1 meter; and currently on the market, the length of the battery module is generally about 0.3 meters, so in the power battery pack, need Set at least 3, or even more battery modules. [0003] To set up multiple battery modules, a fixed structure needs to be added to each battery module, and at the same time, power connection between two adjacent battery modules needs to be performed thro...

AI Technical Summary

Problems solved by technology

As a result, there are many installation structures of the battery module, which not only increases the cost, but also increases the overall weight; at the same time, within the volume of a single module, the installation structure occupies more internal space, resulting in a decrease in the overall capacity of the power battery module and the battery pack. The more battery modules are installed, the more space is wasted

In addition, multiple external power connectors need to be installed for power connection, resulting in increased internal resistance and cost, which increases the internal friction and cost of the power battery pack during use.

In addition, the heating problem of the battery module also seriously affects the service life and safety performance of the battery

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