论文标题
通过磁场成像系统对锂离子电池中短电路的无损可视化
Non-destructive visualization of short circuits in lithium-ion batteries by magnetic field imaging system
论文作者
论文摘要
为了开发高密度和长寿命锂离子电池，需要一项技术，该技术允许在周期测试后的空间分布无损地可视化。在本研究中，我们测量了在操作过程中从锂离子电池泄漏的磁场的分布。根据测量结果，我们使用电流重建过程评估了电池内部密度分布。关于与循环恶化相关的锂离子电池内部状态的变化，我们成功地看到了锂离子电池内电导率分布的空间变化。
To develop a high-density and long-life lithium-ion battery, a technology is needed that allows non-destructive visualization of the spatial distribution of deteriorated parts after cycle test. In the present study, we measured the distribution of the magnetic field leaking from the lithium-ion battery during its operation. Based on the measurement results, we evaluated the current density distribution inside a battery using the electric current reconstruction process. With respect to the changes in an internal state of the lithium-ion battery associated with cycle deterioration, we successfully visualized the spatial changes in the conductivity distribution inside the lithium-ion battery.
