The 18th: Is the favorite applied to a lithium -ion battery?The greatness of the bipolar battery developed by Toyota [Curtek Future Invitation]
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Toyota's bipolar -type nickel hydride battery, which has been attracting much attention by adopting the new "Aqua".What is the difference from the existing battery and what is amazing?Explore the possibility that the battery has a new structure.
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Achieves double output density compared to the conventional
We are sorry for the continuation of the battery topic, but this time we will take up a new battery, bipolar -type nickel -type hydrogen battery installed in the second generation "Toyota Aqua" released in July 2021.
At the briefing of the battery -related technology that has been featured in the 16th and 17th in this series, Toyota said, "We co -develop with Toyota Automatic Woven, challenge the bipolar structure, and use it as a driving vehicle battery.It has been converted. The output density has been doubled compared to the battery mounted on the old aqua, and it has become a powerful acceleration. "
I believe that this bipolar battery is a very groundbreaking event.It has the potential to dramatically enhance the performance of the battery.A bipolar -type battery is simply a structure in which multiple cells are attached to the back match.Where is this groundbreaking?To understand that, you need to first understand the structure of the normal battery and the manufacturing method.
The normal battery is a negative electrode for one, and the other one with two metal foils (called active material) is used as a collector, and is called a separator.The structure is immersed in an electrolytic solution.The separator has the role of not to physically contact the positive electrode and the negative electrode, although the electrolytic solution is freely passed, and a resin film with many fine holes is used.
This is a pair of this positive electrode and negative electrode, and one cell is composed.The cell cell is stored in a separate container and is connected to a terminal called a "tab" attached to the edge of the collector.