DEVICE AND METHOD FOR MEASURING THICKNESS OF SECONDARY BATTERY CELL

摘要

Provided are a device and method for measuring the thickness of a secondary battery cell. The device according to the present invention comprises: a mounting stand on which a secondary battery cell is positioned; a pressurizing plate which is installed so as to be variable in distance from the mounting stand; a pressurizing means which pushes or pulls the pressurizing plate toward or from the pressurizing plate; a measurement means for measuring the pressurization force applied to the pressurizing plate by the pressurizing means and the thickness of the secondary battery cell; and a controller which is configured to control charging, discharging or temperature of the secondary battery cell according to measurement conditions, receive a pressurization force measurement value and a thickness measurement value from the measurement means to thereby determine the magnitude of the pressurization force applied to the pressurizing plate and the thickness of the secondary battery cell, and vary, or maintain the pressurization force applied to the pressurizing plate to be constant.

主权项

1. An apparatus for measuring a thickness of a secondary battery cell, comprising:
a mounting stand on which a secondary battery cell for thickness measurement is positioned; a pressurizing plate opposing the mounting stand with the secondary battery cell being interposed therebetween, the pressurizing plate installed such that a distance to the mounting stand is variable; a pressurizing means configured to press the secondary battery cell positioned on the mounting stand in a thickness direction by pushing or pulling the pressurizing plate toward or from the mounting stand; a measurement means configured to measure a pressurization force applied to the pressurizing plate and the thickness of the secondary battery cell at time intervals; and a controller configured to: control charging, discharging or temperature of the secondary battery cell according to a measurement condition as inputted by an operator; be inputted with a pressurization force measurement value and a thickness measurement value from the measurement means at time intervals to determine a magnitude of the pressurization force applied to the pressurizing plate and the thickness of the secondary battery cell and store the determined data in a memory along with time information; and, while the thickness of the secondary battery cell is being measured, vary, or maintain a pressurization force applied to the pressurizing plate by the pressurizing means to be constant.