Connection structure of battery pack case and individual lithium battery

Abstract

The invention provides a connection structure of a battery pack case and an individual lithium battery. The connection structure comprises a battery support, insulating plates and battery trays. A plurality of individual lithium batteries uniform in electrode orientation are radially abreast arrayed and fixed between an upper battery supporting frame and a lower battery supporting frame and form asquare battery block along with the battery supporting frame. Multiple battery blocks are radially abreast arrayed between the two insulating plates in horizontal arrangement vertically and form a square battery pack along with the insulating plates, and the multiple battery blocks are serially connected and then connected between a main positive connector and a main negative connector of the battery pack. An inner cavity of the battery pack case is partitioned into a plurality of battery chambers by partition plates horizontally put in the battery pack case, and the battery trays are fixedlyconnected to the bottom surfaces of the battery chambers. A great quantity of individual lithium batteries can be contained in limited battery pack space, the problem of short circuit in the batterypack due to shedding of the individual lithium batteries in vibration of an electric automobile is effectively prevented, and battery pack reliability is improved.

Description

technical field [0001] The invention relates to the technical field of power batteries for new energy vehicles, in particular to a connection structure between a battery pack case and a single lithium battery. Background technique [0002] In the field of new energy vehicles, power battery packs are generally used as the main energy source of electric vehicles. As a power battery pack, lithium battery packs have been widely used in electric vehicles in recent years due to their advantages such as lighter weight, larger capacity, good cycle performance and long service life. At present, the lithium battery pack is generally installed under the floor of the electric vehicle body. Due to the influence of the electric vehicle body, the installation space of the lithium battery pack is very limited. At the same time, in order to ensure the driving range of electric vehicles, a large number of lithium batteries are required in the lithium battery pack to provide high current and ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a connection structure between a battery pack box body and a single lithium battery, capable of accommodating a large number of single lithium batteries in a limited space of the battery pack, with reasonable arrangement and high space utilization; and the single lithium battery is stable The ground is installed in the battery pack box, which effectively prevents the problem of the single lithium battery falling off and the short circuit in the battery pack due to the vibration of the electric vehicle, and improves the reliability of the battery pack.

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