Single battery, power battery pack and vehicle

Abstract

The application discloses a single battery, a power battery pack and a vehicle. The single battery includes: a casing, both ends of the casing have end plates, and each of the end plates is provided with at least two Electrode terminals, the electrode terminals pass through the end plate; pole cores, the pole cores are accommodated in the housing, the pole cores include a plurality of pole pieces, and the center positions of the pole pieces along the length direction The width direction of the pole piece leads outward to the tab, and the end of the electrode terminal extending into the inner side of the end plate is connected to the corresponding tab; the width of the tab is L1, and the width of the pole piece is L2, satisfying: 40mm≤ L1≤120mm, 600mm≤L2≤1500mm, 5≤L2 / L1≤30. In the single battery of the present application, each end plate of the single battery is provided with at least two electrode terminals, so that the whole package can be repaired when the single battery fails, and the tabs drawn in the middle are designed to shorten the current collection path and improve overcurrent, reduce impedance.

Description

technical field [0001] The present application relates to the technical field of vehicle manufacturing, and in particular to a single battery, a power battery pack with the single battery, and a vehicle with the power battery pack. Background technique [0002] On the one hand, most of the current single batteries are equipped with a positive electrode terminal on one side and a negative electrode terminal on the other side. In this way, when one electrode terminal of the single battery fails, the entire single battery is paralyzed and cannot work normally. , the battery needs to be replaced again, the cost of use is high, and the batteries are bonded with structural glue, which is not easy to disassemble, resulting in high maintenance costs. [0003] On the other hand, when the size of a single battery is large in a certain direction, higher requirements will be placed on the battery's overcurrent capability, and at the same time, the internal resistance will also be large,...

AI Technical Summary

Problems solved by technology

[0002] On the one hand, most of the current single batteries are equipped with a positive electrode terminal on one side and a negative electrode terminal on the other side. In this way, when one electrode terminal of the single battery fails, the entire single battery is paralyzed and cannot work normally. , the battery needs to be replaced again, the cost of use is high, and the batteries are bonded with structural glue, which is not easy to disassemble, resulting in high maintenance costs

[0003] On the other hand, when the size of a single battery is large in a certain direction, higher requirements will be placed on the battery's overcurrent capability, and at the same time, the internal resistance will also be large, and there is room for improvement.

Images