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Simply put, we understand our customers’ needs. Currently, around 95% of Truewin Technology revenue is from chipset, semiconductor, fab manufacturers, and high-tech manufacturers. Our customers chose Truewin Technology specifically because of our leading BMS technology in their industrial applications and our focus to create highest quality industrial storage products and solutions. We can categorize our strengths into three sections.
The first strength is the core team’s experience of the company. Majority of the employees used to work in semiconductor manufacturing industry. They understand the necessity and the operational usage of the uninterrupted power supply (UPS) system in the semiconductor manufacturing facility. UPS can provide uninterruptible power supply to customer’s essential appliances during the power outage or voltage drop scenario to ensure stable operation and production performance. Thus, the core team can assist with customers to identify what kind of appliances may need to connect with the UPS and introduce the appropriate storage solutions to pair with the UPS.
The second strength is the selection and the proprietary design of Lithium Iron Phosphate (LFP) batteries by Truewin Technology. Environmental concern of Lead-Acid batteries has been a big issue for the semiconductor manufacturing industry. Truewin Technology had successfully assisted customers to replace the old lead acid batteries with Truewin Technology’s LFP batteries. LFP batteries are smaller in size, lighter in weight, higher discharge rate, longer cycle life and lower maintenance than traditional lead-acid batteries used in the industry today. Additionally, LFP batteries provide a safer and stable environment when compared to other ternary batteries. The replacement not only helped customers to achieve energy saving but also helped them to fulfill their ESG (environmental, social and governance) target.
The third and the last strength is the compatibility of Truewin Technology’s battery system with more than 40 UPS models in the industry by major brands that include the dry contact connections, the alarm triggering methods, charging/discharging behavior of different UPSs. Based on different brands or different models of UPSs, Truewin Technology can provide customized and the most compatible solutions to our users. We aim to satisfy the customers with their different scenarios.
We can answer this question from four different perspectives: experience, technology, third-party certification, and O&M organization.
Speaking from experience, Taiwan Truewin Technology Co., Ltd was established in 2017 with a R&D team average 20 years of service experience in the field. We have successfully incorporated 512V battery energy storage systems into leading semiconductor manufacturers and provide long-lasting and environmentally friendly energy solutions for our customers. They understand the abnormality and the maintenance of the battery health.
From the technical standpoint, Truewin Technology has its own proprietary battery management system. With years of experience in the UPS market, it gave us an advantage in applying our understanding to our LFP battery system. For example, based on our data analysis of the industrial discharging/charging records, we derived the discharge and charge curve of LFP battery and capture the most suitable working voltage range to design the parameter setting of the battery management system. This results in reliability enhancement and service life extension of the battery product. In addition, our BMS is capable of reporting data such as voltage of every battery cell, temperature of every battery pack, SOC, SOH and current of each battery series to any remotely connected server. With the development of remote monitoring capability, Truewin Technology have managed to provide remote system health diagnostic support for our customers and provide immediate in-person service when necessary.
Besides the local regulatory mandates, we believe in the benefits of putting our battery systems through the vigorous certification processes in which ensure the reliability and credibility of our solution. Our shipping products have passed the shipping certifications UN38.3, Restriction of Hazardous Substances Directive RoHS 2.0, UL and IEC safety certification for battery cell, battery module, battery cabinet and large energy storage containers.
In terms of our O&M team, we have 7/24 customer service sites in northern, central, and southern regions of Taiwan providing first-hand battery system troubleshooting for our customers. We also have regular scheduled on-site battery system maintenance and repair in every three years to ensure the systems in top-shape condition.
In terms of industrial application of ESS, Truewin Technology would like to include safety and performance innovation into the discussion as capital lost for the companies would be catastrophic. Regarding innovation and breakthroughs on the battery, Truewin Technology looked at improving the cell performance and applied STOBA (Self Terminated Oligomers with Hyper-Branched Architecture) and Foresight’s high porosity separator into our customized battery cells.
STOBA is a nano dendrimer polymer compound added to the LiBs to form a thin protective film that provides two lines of defence. When the battery heats excessively (>150°C) due to external impact or piercing, the end points of the STOBA polymer’s branched structure react together to form a cross-linking three-dimensional network which acts as a physical barrier insulating the anode and cathode, decreasing both electric and ionic conductivity and suppressing thermal runaway. At the same time, STOBA efficiently scavenges free radicals and suppresses oxygen release to shut down the thermal runaway process. The combination of these two effects virtually eliminates the risk of explosion and serious internal short circuit (ISC). The additional contribution of STOBA is the extension of high-temperature withstanding duration ability. It helps the cells to operate consistently at a higher temperature during discharging/charging scenario and extend the cycle life of the cells and the longevity of the system.
Truewin Technology uses Foresight Energy Technology’s battery isolating film which provides exceptional separator porosity of 52%, which is 7% higher than most other battery isolating films in the market (45%). By increasing porosity of the battery diaphragm, it increases the amount of electrolyte and passage for lithium-ion to propagate faster from positive to negative pole. Thus, extending battery cycle life by decreasing electrochemical impedance. The high permeability of Foresight’s battery separator also increases discharge (and charge) C-rate, enhancing the performance of UPS’ key requirement. Lastly, higher porosity increases lithium-ion dispersion and decreases lithium dendrite formation, which makes the batteries safer.
Regarding affordability or cost saving of our energy system, the utilization of Lithium Iron Phosphate cells will immediately provide cost efficiency to our system in comparison to other ternary lithium batteries. But in terms of the saving and efficiency on energy consumption, at this moment, our BMS is using passive voltage balancing which means when a cell voltage is higher than pre-set value, the BMU will execute a small-scale discharge to reduce the high cell voltage to the designated value. This provides a chance for the low cell voltage to receive the charging current from the charger (UPS). However, there are two disadvantages of this passive voltage balancing. First, it is more time-consuming conducting cell balancing this way. Second, more heat is generated. But we are in the middle of introducing active balancing. We are expecting to make some improvements and clear these two impediments. The new design will directly redistribute electricity from higher voltage battery cells to lower voltage battery cells during the discharging and charging cycles. This new feature will reduce the energy consumption of the BMS.
By using lithium iron phosphate (LiFePO4) batteries, we are sourcing material with fewer mineral elements and chemistries that are more environmentally friendly. First, LFP battery does not produce oxygen by itself. It will not seriously combust if the positive and negative electrodes are short-circuited. Second, the battery does not contain precious elements such as cobalt and nickel that requires vigorous mining practices with heavier environmental impact.
Our battery manufacturing site in Tainan, Taiwan will deliver our promise to RE100’s goal of 100% green energy usage by estimated year 2025. (RE100 is an organization formed by the Climate Group and Carbon Disclosure Project with over 350 leading companies in various fields all working towards a greener environment). We also have partnered with companies who help recycle batteries for our customers to eliminate possible environmental wastes. Usable metals from the batteries will be preserved while other parts recycled in accordance with rules and regulations.
UPS application with energy storage system
The voltage of the batteries needs to be maintained at a floating charge with a certain level of voltage to make sure it is fully ready in response to events of sudden voltage drop or power outage.
Different batteries have different amounts of energy consumption to maintain at this floating state. When our team replaced old lead-acid batteries with Truewin Technology LFP batteries, we discovered a decrease in the energy consumption needed to maintain in this floating charge state. In comparison with lead-acid batteries, our solution can save and reduce energy consumption up to 87.3%. Which translate to every 20 lithium batteries saving 330 kWh electricity per year for our customers.
Working environmental temperature between lead-acid and LFP batteries
Working environmental temperature for lead-acid battery system is 25°C to 27°C (77°F to 80.6°F). Working environmental temperature for Truewin Technology’s LFP battery system is 10°C to 35°C (50°F to 95°F).
This means LFP batteries are relatively more stable in lower and higher temperature environments in comparison to traditional lead-acid batteries. Since the operating temperature of LFP is wider in range and producing consistent performance, air conditioner usage can be reduced and generate costing saving. Putting this into actual number, after increasing the converting station’s chiller system temperature by 1°C (33.8°F), we found the energy consumption decreased by 2%. Using six 1280RT’s chillers (seventy percent loaded) for the calculation, it results in saving our customers 695,000 kWh (695 MWh) of electricity, $59,000 USD ($1.8 million NTD), and reducing 385 tons of CO2 emission.