Surface mount ceramic battery targets the Internet of Things

Surface mount ceramic battery targets the Internet of Things

New Products |
By Nick Flaherty

The EnerCera batteries are compatible with high-temperature Installation on a circuit board or in a smartcard. Mass production will start in April 2019.

EnerCera is a Li-ion secondary battery with NGK’s Crystal Oriented Ceramic Plate as electrodes. The Crystal Oriented Ceramic Plate is composed of just an active material and it contains no organic binder or conductive material which exists in a Li-ion battery normally but does not contribute to battery capacity. This doubles the energy density and halves the internal resistance with a small and thin body for operating ICs, sensors and a wireless communication system which needs large current such as several 10 mA to several 100 mA. Constant Voltage (CV) charging eliminates the need for a charger IC to control the charge current.

There are two types of battery, from a coin cell, 1 mm to 2 mm thick, for mounting on a circuit board, to a bendable pouch cell, 0.4 mm to 0.45 mm thick, for embedding in a card. NGK says EnerCera Coin is the world’s first surface mount device (SMD) Li-ion battery which can be mounted by a solder reflow process and has a high discharge current property sufficient to operate devices, although other solid state batteries have been launched for SMD processes. Similarly EnerCera Pouch is the world’s first thin-type Li-ion battery which can be embedded by hot lamination (above 100 ºC) used widely in the IC card production. The EnerCera Pouch lineup has a fast charging type, a high-capacity type and a high-power type for customers’ various device designs.

The EnerCera series is aimed at IoT devices, beacons (short-range wireless communication devices), RFID tags, electronic shelf labels (ESLs), wearable devices, solar watches and backup power of solid state drives (SSDs). NGK has provided EnerCera samples to tens of companies worldwide and is planning production of 2 million units per month at NGK’s Nagoya factory and NGK Ceramic Devices at Yamanashi.

NGK is the world’s largest manufacturer of electrical insulators, including 1,000-kV ultrahigh-voltage (UHV) transmission and substation insulators. It is also one of the largest manufacturers of HONEYCERAM and diesel particulate filters (DPF) for catalyst converters for automobiles. NGK is also the world’s leading manufacturer of large-capacity energy storage systems as NAS batteries.

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