Lithium battery system capable of replacing lead-acid electric vehicle battery system and manufacturing method thereof

Abstract

The invention relates to a lithium battery system capable of replacing a lead-acid electric vehicle battery system and a manufacturing method thereof. The lithium battery system comprises a battery pack shell, a battery module, a support, a battery management system (BMS) and electric parts, wherein the battery pack shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are connected in a closable manner; the battery module is assembled and formed by connecting lithium batteries in a series-parallel manner, and is fixed to the lower battery pack shell through the support; the BMS is mounted on the support; and the electric parts are mounted at corresponding design positions of the battery pack shell. The manufacturing method comprises the following steps: (1) processing the battery pack shell and the internal support; (2) connecting the lithium batteries in the series-parallel manner to assemble and form the module by using connecting cables and connecting copper bars; (3) putting the module into the lower battery pack shell, and mounting the support to fix the module; (4) mounting the related electric parts at the design positions of the battery shell; (5) mounting the BMS on the support; and (6) closing the upper battery pack shell. Through the replacement scheme, the usage of lead-acid batteries can be reduced, and the risks of environmental pollution are reduced; the lithium batteries are used for replacing the lead-acid batteries, and a low-temperature charging heating system is added, so that the low-temperature discharge capacity and the low-temperature charge performance of the battery system are improved.

Description

technical field [0001] The invention relates to an electric vehicle battery system, in particular to a lithium battery system replacing a lead-acid electric vehicle battery system and a manufacturing method thereof. Background technique [0002] Since 2006, my country has replaced Japan to become the world's second largest consumer market for new cars after the United States. In 2030, it will surpass the United States and rank first. Chinese consumers have a huge demand for cars, and for a long time to come, my country's auto market will continue to maintain the fastest growing trend in the world. In 2030, my country will need to import nearly 1 billion tons of oil to provide automobile fuel. my country's energy issues have become a strategic issue for national economic development. From the perspective of national security, oil resources have been closely linked with national security. The stable supply of energy resources It has always been the focus of a country, especia...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a lithium battery system to replace the layout of the lead-acid battery system to solve the problem of low specific energy of the lead-acid battery, short mileage on one charge, short service life, poor low temperature performance, difficult use and recycling, environmental pollution, etc. shortcoming

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