Quality Assurance

Quality and safety are the main requirements of Li-ion battery packs. For the development and manufacture of Li-ion battery packs, many factors must be considered from a quality assurance perspective in order to ensure basic requirements, OKACC Battery has a very strict quality control system and environmental control system. We have passed ISO9001: 2015 certification and ISO14001: 2015 in the past several years, OKACC Battery guarantees a one-year limited warranty against workmanship and materials defects.

To ensure our battery quality, OKACC Battery starts by purchasing high-quality raw materials and then assembling these materials on a production line using automated equipment, along with the latest in manufacturing processes and a high degree of precision quality control. For instance, our LiFePO4 battery processing, manufacturing, and inspection equipment are directly imported from professional equipment manufacturers in Taiwan. Other materials like separators are imported from qualified suppliers in Japan and China. We then use laser equipment to detect the thickness in the coating process. This laser equipment communicates with the coating machine in a feedback system to maintain tight tolerances and make sure that no cells are produced outside preset limits. OKACC Battery also deployed a PDMS (Product Data management System) for quality control. Every step in the manufacturing process is checked, logged, and judged so that if a problem occurs it will be discovered early and any faulty product would be discarded. This automated attention to every step of the manufacturing process results in higher yields and ultimately lower production costs.

okacc QC check flow chart

With a new water-based manufacturing method, OKACC Battery updated the operation equipment and working flow. With less labor cost and less equipment required, manufacturing now became more effective. All advantages bring in a higher qualified passing rate of products and nice quality. Besides, the electrochemical performance is much better than before with water-based manufacturing. This talent technology became of one our core competitiveness of us.

The carbon coating layer increased the electronic conductivity of iron phosphate lithium, well-shaped surfaces offer a better environment for lithium iron transform. Metal doping also makes significant efforts for electronic conductivity. Thus, OKACC Battery Power’s LiFePO4 battery, like some pouch cells could deliver a large continuous discharge current at an enhanced safety level. For pouch cells, we could apply a better thermal conductivity, so better battery performance and long cycle life would be improved.

Also, the carbon coating layer, well-protected the electrodes, enhanced battery safety. The water-based manufacturing, thermal conductive design, cell assembly, separators, electrolyte, aspects have been well organized, the battery got superior safety. OKACC batteries have nice performance in thermal stability tests (and operation over a wider temperature range) and overall safety under stress conditions like over-charge, short-circuit, acupuncture, burning, etc… OKACC battery is the most reliable lithium battery available for customer application.

Development, design, testing, producing, and delivering a high-quality Li-ion battery pack requires a commitment to and an embracement of quality assurance. By following the guidelines above, OKACC can move toward developing exceptional products that are also safe and environmentally friendly.