Single battery, power battery pack and vehicle

Abstract

The invention discloses a single battery, a power battery pack and a vehicle. The single battery comprises a shell and a pole core positioned in the shell. The shell is provided with a plurality of surfaces; at least two surfaces are provided with electrode terminals which are electrically connected with the pole core and extend out of the shell to be used for leading out current; the electrode terminal on each surface comprises a positive electrode terminal and a negative electrode terminal; the single battery also comprises positive electrode inner connecting sheets and negative electrode inner connecting sheets; two ends of each positive electrode inner connecting sheet are respectively connected with the positive electrode terminals on the two surfaces; two ends of each negative electrode inner connecting sheet are respectively connected with the negative electrode terminals on the two surfaces; and the surfaces of the positive electrode inner connecting sheets and the negative electrode inner connecting sheets are respectively provided with insulating layers. According to the single battery disclosed by the invention, at least two surfaces of the single battery are respectively provided with two electrode terminals, and the electrode terminals with the same polarity on the two surfaces are connected through the inner connecting sheets, so that the internal resistance of the battery is greatly reduced, and the overcurrent efficiency is enhanced.

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 having the single battery, and a vehicle having the power battery pack. Background technique [0002] In recent years, with the vigorous development of new energy vehicles, the performance requirements of on-board batteries have also increased. Among them, the Ministry of Industry and Information Technology, the National Development and Reform Commission, and the Ministry of Science and Technology jointly issued the "Medium and Long-Term Development Plan for the Automobile Industry" to clarify the goal of my country's power battery. The energy is striving to reach 260Wh / kg; the cost is less than 1 yuan / Wh; the use environment is from minus 30 ° C to 55 ° C; [0003] In order to achieve the above goals, increasing the size or volume of the battery to improve the battery capacity and the grouping efficiency of the ...

AI Technical Summary

Problems solved by technology

However, if the size of the battery is too large, the current will be transmitted to the tab side through the current collector and then drawn out through the tab, which will make the current collection path inside the battery pole piece near the opposite end too long, and the internal resistance will increase, thus affecting the high current of the power battery. Charge and discharge performance, safety performance, etc.

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