Sensing device and operating method thereof

Abstract

A sensing device (100, 300) is disclosed that senses a structure of an electrode (108, 200A, 200B, 302) of a power battery (106). The electrode is arranged to have a layer (110, 112, 202, 206, 304, 306) spatially adjacent thereto, the layer (110, 112, 202, 206, 304, 306) providing a waveguide region (114, 308) comprising a surface of the structurally varying electrode 5. The sensing device includes a source (102, 310) of terahertz electromagnetic radiation and a coupling device (104, 312) that couples the terahertz electromagnetic radiation from the source into the waveguide region. Terahertz electromagnetic radiation interacts with features present at the surface. The sensing device includes a detector (116, 314) that receives the terahertz electromagnetic radiation reflected and / or transmitted through the waveguide region and processes the terahertz electromagnetic radiation to determine a temporal change therein indicative of dendritic growth or any manufacturing or structural defect occurring at the surface of the electrode.

Description

technical field [0001] The present disclosure relates generally to battery management systems; and more particularly, to sensing devices that sense battery structure. Furthermore, the present disclosure relates to methods for sensing cell structures. Background technique [0002] Over the years, electrical batteries have been increasingly used to make the supply of electricity more smooth and predictable due to the intermittent supply and demand of electrical energy. Furthermore, batteries can store and retrieve electrical energy in a clean, safe, reliable and rechargeable manner for the rapidly evolving technologies of smart grids and electric vehicles (EVs), as well as for remote areas lacking grid connection infrastructure. Typically, a power cell consists of two or more electrochemical cells that convert stored chemical energy into electrical energy. [0003] However, batteries require a battery management system (BMS) to operate safely, reliably and efficiently. Spec...

AI Technical Summary

Problems solved by technology

However, the aforementioned battery management systems do not monitor power loss in the battery due to manufacturing or structural defects, physical and chemical changes that occur naturally over time, or operating parameters that change due to charging strategies (e.g., deep charging, overcharging, rapid charging, etc.) Any change in the internal state of the

Subsequently, the battery management system fails to identify an internal abnormality associated with the battery

Thus, such lack of information about internal anomalies of power cells can lead to dangerous outcomes such as short circuits, leaks, exothermic reactions, thermal runaway, multi-cell failure, venting, rupture and explosion, etc.

Moreover, the occurrence of such hazardous events can affect the performance and efficiency of power batteries, creating challenges for emergency response teams and further causing confusion and unrest due to the safety risks associated with it

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