Lithium ion power battery pack for electric automobile and manufacturing method of lithium ion power battery pack

Abstract

The invention discloses a lithium ion power battery pack for an electric automobile and a manufacturing method of the lithium ion power battery pack. The lithium ion power battery pack for the electric automobile comprises a battery pack shell and a battery pack cover matched with the battery pack shell, wherein battery modules are arranged inside the battery pack shell; an insulating layer I is arranged between the battery modules and the battery pack cover; an insulating layer II is arranged between a battery pack shell surface opposite to the battery pack cover and the battery modules; quick connectors connected with the battery modules are arranged on the battery pack shell; and the adjacent battery modules inside the battery pack shell are clamped with each other. The manufacturing method of the lithium ion power battery pack for the electric automobile comprises the following steps of: (1) providing a single battery, and preprocessing; (2) making a plurality of single batteries connected in parallel with one another to form the battery modules; (3) making a plurality of battery modules connected in series with one another to form the battery pack; and (4) performing terminal treatment on the battery pack. By the manufacturing method, charging uniformity, high safety and long service life of the lithium ion power battery pack can be ensured.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a lithium-ion battery pack for electric vehicles and a manufacturing method thereof. Background technique [0002] As a new energy vehicle, electric vehicles will lead the future development direction of automobiles. Because lithium-ion batteries have the advantages of small size, light weight, and no pollution to the environment, battery packs composed of lithium-ion batteries are widely used in electric vehicle power batteries. For power batteries for electric vehicles, power batteries must meet the four requirements of high specific energy, high specific power, long life, and high safety, as well as the requirements for battery packs, so as to meet the needs of contemporary consumers for power vehicles. For electric vehicles, considering their cruising range and driving speed, a high-capacity, high-voltage battery pack is required as a power source for driving the motor. ...

AI Technical Summary

Problems solved by technology

However, the structure of the lithium-ion battery pack has the following problems: first, this technology is only suitable for a battery pack structure composed of a small number of battery blocks; The installation requirements cannot meet the safety requirements of the car; secondly, the cooling effect cannot be achieved by leaving gaps between the battery blocks; finally, there is no battery safety protection management system in the battery pack, and the internal stability of the battery cannot be monitored in real time. Can not guarantee the balance of battery charging, can not guarantee that the battery pack has a high service life and safety performance

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