Composite structure of lithium battery pack

Abstract

The invention discloses a composite structure of a lithium battery pack. The composite structure comprises a first lithium battery module, a second lithium battery module and a sleeve shell, wherein the first lithium battery module and the second lithium battery module are embedded into the sleeve shell; a first positive guide post of the first lithium battery module is electrically connected with a second positive guide post of the second lithium battery module through a positive guide post connecting sheet; a first negative guide post of the first lithium battery module is electrically connected with a second negative guide post of the second lithium battery module through a negative guide post connecting sheet; the first lithium battery module further comprises a first lithium battery bank, a first insulating clamping plate, a first positive busbar and a first negative busbar; the first battery bank comprises an odd number of first lithium batteries which are arranged side by side; the upper surfaces of the first lithium batteries are provided with first positive terminals and a first negative terminals; and the first positive terminals and the first negative terminals are provided with first positive connecting sheets and first negative connecting sheets respectively. The composite structure of the lithium battery pack is compact; wiring is simple; and one lithium battery is convenient to replace and repair after being damaged.

Description

technical field [0001] The invention relates to a lithium battery device, in particular to a combined structure of a lithium battery pack. Background technique [0002] Traditional automobile engines emit a large amount of exhaust gas during operation, which leads to serious air pollution in cities. As people pay more and more attention to the environment, the development of electric vehicles and the use of clean energy have become the development direction of urban transportation systems. At present, some cities or large-scale exhibitions in my country have begun to use electric vehicles, which has played an important role in reducing urban environmental pollution. [0003] At present, most electric vehicles use lithium battery devices to provide power to the vehicle. In order to meet the continuation mileage and reduce the charging frequency, each electric vehicle needs to install multiple lithium battery boxes, and each lithium battery box is arranged with multiple rows ...

AI Technical Summary

Problems solved by technology

Save more space and reduce the internal resistance of the battery. Lithium battery cells need to be tightly stacked. During the driving process of the car, each lithium battery needs to dissipate heat, resulting in heat accumulation, which affects the service life of the lithium battery to a certain extent.

If the temperature of a lithium battery exceeds 170°C, it is prone to spontaneous combustion and cause safety accidents

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