| 摘要 |
A device for measuring volume variation of a battery cell is provided to measure volume variation of a battery cell when the battery cell expands due to overcharge, overdischarge, and overcurrent by using a pressure gauge. A device for measuring volume variation of a battery cell comprises a sealed container(200) and a pressure gauge(150). The sealed container has a space where the battery cell is installed, and the space is filled with the air up to predetermined pressure. The pressure gauge is installed at one side of the container, being connected with the space. When volume of the battery cell is changed, the pressure of the air in the container is changed. |
