Battery, battery pack and automobile

Abstract

The invention provides a battery, and the battery comprises a shell and a plurality of pole core groups packaged in the shell; the pole core groups are connected in series, each pole core group comprises a packaging film and at least one pole core, and at least one pole core is located in a containing cavity formed by the packaging film in a surrounding mode; a space ring is arranged between the two electrode core groups which are connected in series, a through hole is formed in the space ring, each electrode core group comprises a first electrode and a second electrode, and the first electrode and the second electrode extend out of the packaging film; the first electrode of one of the two electrode core groups which are connected in series is connected with the second electrode of the other electrode core group, and the connecting part is accommodated in the through hole; the space ring comprises a peripheral surface facing the inner surface of the shell, at least one first positioning part is formed on the peripheral surface of the space ring, second positioning parts in one-to-one correspondence with the first positioning parts are formed on the inner surface of the shell, and the first positioning parts are matched with the corresponding second positioning parts to fix the space ring and the shell. Meanwhile, the invention further provides a battery pack and an automobile based on the battery provided by the invention.

Description

technical field [0001] The present application relates to the field of batteries, in particular to a battery, a battery pack and an automobile. Background technique [0002] In the prior art, in order to increase the capacity of the battery, a plurality of pole cores are connected in series in the battery case, and the connecting parts between the pole cores are prone to twisting and breaking during the use of the battery; in addition, in the case of vibration and bumps, Multiple pole cores are easy to move in the shell, and the relative displacement between the pole cores will occur, which will cause damage to the pole cores, for example, the current collector is damaged, the diaphragm is wrinkled, the active material layer on the pole piece falls off, and the stability of the battery Poor performance, but also prone to security problems. Contents of the invention [0003] This application aims to solve at least one of the technical problems existing in the prior art. ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, in order to increase the capacity of the battery, a plurality of pole cores are connected in series in the battery case, and the connecting parts between the pole cores are prone to twisting and breaking during the use of the battery; in addition, in the case of vibration and bumps, Multiple pole cores are easy to move in the shell, and the relative displacement between the pole cores will occur, which will cause damage to the pole cores, for example, the current collector is damaged, the diaphragm is wrinkled, the active material layer on the pole piece falls off, and the stability of the battery Poor performance and prone to safety issues

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