A battery, battery module, battery pack and electric vehicle

Abstract

The invention discloses a battery, a battery module, a battery pack and an electric vehicle. The battery includes a casing and at least two pole core groups, and the casing has a accommodating cavity; the at least two pole core groups are arranged in In the accommodating cavity, the pole core groups are connected in series, and the pole core group includes at least one pole core; the battery further includes a separator, and the separator is arranged between two adjacent pole core groups, so The spacer includes a first spacer and a second spacer, and a gap is set between the first spacer and the second spacer. In the battery provided by the present invention, the first separator and the second separator with a gap are arranged between the pole core groups, which can reduce the weight of the battery while isolating the pole core groups, and is easy to install.

Description

technical field

[0001] The present invention relates to the technical field of batteries, and more particularly, to a battery, a battery module, a battery pack and an electric vehicle. Background technique

[0002] As a new type of non-polluting secondary battery, lithium-ion battery has been widely used in many fields, especially as a power battery for new energy vehicles. With the continuous popularization of new energy vehicles and the gradual improvement of performance, users have put forward higher and higher requirements for the mileage and power performance of new energy vehicles. Therefore, the requirements for the use of power batteries in new energy vehicles have also changed. getting higher and higher. For the battery packs used in new energy vehicles, while the overall capacity requirements are constantly increasing, the total weight of the battery packs is also required to be reduced as much as possible. Generally speaking, the capacity of batteries used in ne...

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