Thermal management system integrated lithium ion battery structure and manufacturing method thereof

Abstract

The invention discloses a thermal management system integrated lithium ion battery structure and a manufacturing method thereof. The thermal management system integrated lithium ion battery structure comprises a battery shell, a positive electrode material, a negative electrode material, a diaphragm, an integrated micro-through pipe, a positive electrode end, a negative electrode end, a positive electrode collecting pipe and a negative electrode collecting pipe. The battery shell and the integrated micro-through pipe form a closed interval, the closed interval is filled with the positive electrode material, the negative electrode material and the diaphragm, the integrated micro-through pipe is filled with a coolant to absorb heat, the positive electrode end and the negative electrode end are arranged at the top of the battery, the positive electrode collecting pipe is connected with the positive electrode collecting piece on the positive electrode material and is connected with the positive electrode end, and the negative electrode collecting pipe is connected with the negative electrode collecting piece on the negative electrode material and is connected with the negative electrode end. The lithium ion battery thermal management system is integrated, so that the energy density of the battery module system is improved, and the thermal safety of the battery is improved through the integrated micro-through tube.

Description

technical field [0001] The patent of the present invention relates to the field of power battery design and manufacture, in particular to a lithium-ion battery structure with integrated thermal management system and its manufacturing method. Background technique [0002] Lithium-ion power batteries have high energy density, high voltage and long cycle life, and square aluminum shell batteries are widely used in new energy pure electric vehicles and low-speed battery vehicles because of their good specifications and shapes, which are convenient for assembly in narrow spaces. and power tools as storage and supply systems for power energy. In particular, in the development of long-range, high-energy-density power battery technology in recent years, the requirements for the capacity and rate performance of power batteries are getting higher and higher, and the specifications and sizes of lithium-ion power batteries are getting bigger and bigger. However, as the energy density o...

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Problems solved by technology

[0004] In view of the deficiencies of the above-mentioned invention, the patent of the present invention solves the thermal safety problem of the existing power battery through a lithium-ion battery structure integrated with a thermal management system and its manufacturing method, and can greatly reduce the thermal management system of the battery module. The design of components, so as to improve the energy density of the system as a whole and increase the cruising range

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