Soft package lithium ion battery open circuit voltage internal resistance measurement equipment

Abstract

The invention discloses soft package lithium ion battery open circuit voltage internal resistance measurement equipment. The equipment comprises a rack, conveyor assemblies, a transplanting manipulator assembly, a needle plate assembly, a rotating disk mechanism assembly, a tray positioning assembly, a battery OCV / IR measurement instrument and a control mechanism, wherein the conveyor assemblies are arranged on front and rear ends of the rack and are connected to a preposition logistics line and a postposition logistics line respectively; the transplanting manipulator assembly is used for grabbing a battery tray; the needle plate assembly is closely contacted with a battery pole ear; the rotating disk mechanism assembly is used to adjust a battery tray position according to different types of batteries; the tray positioning assembly is installed between the front and the rear conveyor assemblies and is located below the needle plate assembly; the battery OCV / IR measurement instrument is used to collect voltage and current signals of each battery and update signal data to a PC; and the control mechanism is arranged in the PC outside the rack. The control mechanism is used for controlling motion of the conveyor assemblies, the transplanting manipulator assembly, the needle plate assembly, the rotating disk mechanism assembly, the tray positioning assembly and the battery OCV / IR measurement instrument. The needle plate assembly is electrically connected to the battery OCV / IR measurement instrument through a conductive beam.

Description

technical field [0001] The invention relates to a device for measuring the open circuit voltage internal resistance of a soft-pack lithium-ion battery, which belongs to the technical field of lithium-ion battery manufacturing, and is applied to a device for measuring the open-circuit voltage and resistance of a soft-pack lithium-ion battery with lower tabs after charging and discharging. Background technique [0002] With the improvement of science and technology and the popularization of new energy technology, the usage rate of soft-pack lithium-ion batteries is getting higher and higher. In order to improve the service life of lithium batteries, it is necessary to periodically charge and discharge lithium batteries, aging, voltage and Internal resistance test. [0003] At present, most of the existing lithium battery OCV / IR measurement methods are mainly manual measurement. First, the battery is taken out of the tray and fixed on a special container, and then the OCV / IR me...

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Problems solved by technology

[0006] In order to overcome the shortcomings of the manual turnover measurement method and poor equipment compatibility in the existing soft-pack lithium-ion battery OCV / IR measurement process, the present invention provides a high integration, high openness, perfect system function, maximum It can be used as a stand-alone machine for automatic detection, greatly improving the work efficiency of battery detection, and can also be integrated in lithium battery production lines. The open-circuit voltage internal resistance measurement equipment for soft-pack lithium-ion batteries with strong scalability, the present invention The tray is used as the carrier of the lithium battery measurement link to complete the OCV / IR test of different types of soft-packed lithium-ion batteries with lower tabs

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