Power battery pack

Abstract

The invention relates to the technical field of accessory devices of battery packs, in particular to a power battery pack. The heat dissipation effect is improved, difference between battery modules is reduced, and the service life of the battery pack is prolonged; and moreover, the poor contact of connection portions of battery packs due to vibration can be prevented effectively, and use reliability is improved. The power battery pack comprises a shell, and further comprises four left guide columns, four left guide sleeves, four right guide columns, four right guide sleeves, two left 'C'-shaped spring plates and two right 'C'-shaped spring plates, wherein a working cavity is formed in the shell; an upper heat conduction plate, a lower heat conduction plate, a battery module and a coolingfan are arranged in the working cavity; an upper slot and a lower slot are separately formed in the bottom end of the upper heat conduction plate and the top end of the lower heat conduction plate; anupper metal plate and a lower metal plate are separately arranged at the top end of the upper heat conduction plate and the bottom end of the lower heat conduction plate; and a plurality of upper projections and a plurality of lower projections are separately arranged at the top end of the upper metal plate and the bottom end of the lower metal plate.

Description

technical field [0001] The invention relates to the technical field of battery pack attachments, in particular to a power battery pack. Background technique [0002] As we all know, a power battery pack is generally an energy storage device that connects multiple battery modules in series or in parallel to obtain a higher voltage or higher capacitance. It has been widely used in electric vehicles, electric bicycles, electronic equipment and other fields. Differences between monomers always exist. Taking capacity as an example, the difference will never disappear, but will gradually deteriorate. The same current flows in the group. Relatively speaking, the capacity is always in a small current. Shallow charge and shallow discharge tend to slow capacity decay and prolong life, while those with small capacity are always in high current overcharge and over discharge, tend to accelerate capacity decay and shorten life. The difference in performance parameters between the two is g...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a method to improve the heat dissipation effect, reduce the difference between the battery modules, and prolong the service life of the battery pack; and it can effectively prevent the poor contact of the connection parts of the battery pack caused by vibration, and improve the reliability of use. power battery pack

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