Global demand for electric drive vehicles (EDVs) has been steadily rising, as more customers seek fuel-efficient, high-performance, and low-emission vehicles.
The use of lithium batteries has allowed the market to evolve and take on many forms from hybrids, to plug-ins, to full battery electrics and vehicles that include buses, taxis and other fleet vehicles.
Celgard® lithium-ion battery separators deliver unique advantages for safety and optimal combinations of energy and power performance in a wide variety of EDV battery cell designs.
We offer a range of separator solutions that balance the competing performance demands of EDV systems, including safety, chemical and dimensional stability, and cycle life.
Our base film manufacturing facilities in Charlotte and Concord, North Carolina are certified to IATF 16949:2016 – the automotive industry’s most widely used international standards for quality management.
In a battery electric vehicle (BEV), stored chemical energy within rechargeable battery packs is used to run an entirely electric motor. Since there is no combustion engine, a BEV does not require fuel. It only needs to recharge the battery packs by plugging into an electricity source.
Consumer adoption of BEVs is steadily increasing, but there are still opportunities for improvements in areas including vehicle driving range, battery life and durability, and safety.
Celgard® battery separators for BEVs offer advanced performance benefits – such as low ionic resistance and high porosity – that facilitate the increase in battery power capability required for optimized driving performance and battery energy usage over longer driving ranges.
The polypropylene (PP) outer layers of Celgard® separators provide excellent oxidation resistance for increased longevity and durability in a variety of conditions.
Celgard® separators have been designed with safety in mind, and include several built-in features:
- The PP outer layers provide high temperature structural integrity and oxidation resistance – reducing the rate of corrosion and lowering the risk of internal shorting
- The polyethylene (PE) inner layer of Celgard’s unique PP/PE/PP trilayer separator acts as a thermal fuse that provides high-speed shutdown during a thermal event
functional coatings improve safety and longevity in higher energy