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Figure 14. Overview of battery immersion testing process - Battery preparation, immersion, observation above immersion tank and extended observation 2.2.1 Battery Preparation As with most battery safety evaluation procedures and best practices, immersion testing should be done at a high state-of-charge, preferably near 100 percent or the expected maximum charge level achieved during normal vehicle charging. Although it is preferred to have the battery brought to the desired SOC using an OEM-supplied vehicle charger and/or in-vehicle prior to pack removal, this is not always feasible or desirable as some test assets may be outside of a vehicle (and were for these experiments) with no diagnostic information available. In these cases, battery voltage was used to confirm the batteries were within an acceptable band of SOC as indicated by their measured voltage compared to known data correlating open-circuit voltage to SOC. To ease the burden for these experiments, a band of 80 to 100 percent SOC was allowable, but the majority of battery packs tested was actually already prepared at a near 100 percent SOC level prior to testing. 2.2.2 Battery Immersion Parallel with the procedures in the introduction, the batteries were lowered into the immersion tank smoothly and rapidly, allowing the reactions to take place with the battery fully under water and without any major sloshing of the water within the battery. For this testing, the batteries were held at a slight angle (Figure 15) to avoid any air pockets from forming within the battery and possibly floating it to the top of the waterline unexpectedly. This technique appeared to work as all of the batteries remained underwater for the entire duration of their respective immersion tests. Figure 15. Angled battery prior to immersion (to avoid floating) 14PDF Image | Li-Ion Battery Pack Immersion Exploratory Investigation
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Product and Development Focus for Salgenx
Redox Flow Battery Technology: With the advent of the new USA tax credits for producing and selling batteries ($35/kW) we are focussing on a simple flow battery using shipping containers as the modular electrolyte storage units with tax credits up to $140,000 per system. Our main focus is on the salt battery. This battery can be used for both thermal and electrical storage applications. We call it the Cogeneration Battery or Cogen Battery. One project is converting salt (brine) based water conditioners to simultaneously produce power. In addition, there are many opportunities to extract Lithium from brine (salt lakes, groundwater, and producer water).Salt water or brine are huge sources for lithium. Most of the worlds lithium is acquired from a brine source. It's even in seawater in a low concentration. Brine is also a byproduct of huge powerplants, which can now use that as an electrolyte and a huge flow battery (which allows storage at the source).We welcome any business and equipment inquiries, as well as licensing our flow battery manufacturing.CONTACT TEL: 608-238-6001 Email: greg@salgenx.com (Standard Web Page)