Li-ion cell operates at 85deg Celsius

Author: EIS Release Date: Feb 28, 2020

NGK Insulators of Nagoya, Japan, has started mass production of “EnerCera Coin,” a coin type cell in the “EnerCera” series of power sources for IoT devices.

 

NGK is sampling a heat resistant type cell which it claims to be the first li-ion battery that can operate at 85 degrees Celsius.

 

NGK is also sampling a high heat resistance type cell that features an operating temperature range for from minus 40 degrees to positive 60 degrees Celsius. To develop it, NGK focused on the high thermal stability of its unique battery structure (semi-solid state battery).

 

With this structure, small amounts of liquid electrolyte are infused into multi-layered ceramic battery materials. Based on the high thermal stability afforded by this structure, NGK adopted a design that enables the cell to be operated at even higher temperatures. As a result, NGK has realized the world’s first-ever Li-ion secondary battery with an operating temperature of 85 degrees Celsius.

 

 

The high heat resistance type cell has the performance capability to maintain at least 95% of its capacity even after 1,000 charging and discharging cycles at 85 degrees Celsius. As such, it is optimal for use in automotive equipment, factory automation applications, and outdoor IoT devices.

 

EnerCera Coin will be available in three cell types. There will be a high capacity type cell and a high heat resistance type cell for circuit boards, mountable with reflow soldering, as well as a high power type that is currently under development for use in wearable devices such as smartwatches. Going forward, NGK will seek to increase adoption of the three cell types in IoT devices.

 

The EnerCera series is a Li-ion secondary battery with a high-energy density and small and thin body that uses NGK’s original Crystal Oriented Ceramic Plate as electrodes.

 

With its high heat resistance, the EnerCera series stands out for its compatibility with high-temperature mounting on devices. EnerCera series has two types: “EnerCera Pouch,” a thin type that can be embedded by hot lamination in IC cards, and EnerCera Coin, a coin type.