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Lithium-ion battery storage is one of the most exciting new and innovative energy options changing the energy landscape, but it also poses some unique challenges for fire safety design. Dr Rui Sun, one of Hydrock’s leading fire safety experts, explores how to keep your building safe without compromising the benefits of this new smart energy solution.Driven by the worldwide changing energy landscape, the development of smarter energy storage is accelerating. A smart energy strategy presents a brilliant opportunity to access cheaper, cleaner and more reliable energy for businesses and homes by allowing consumers (domestic and commercial) to store energy to access as needed, avoiding reliance on the grid. The commercial benefits of this are vast.From a technology perspective, in the current market, the most popular accumulator is the lithium-ion battery. It is lightweight, rechargeable and stores a lot of energy in relation to its size for a reasonably long period without losing voltage. More importantly, thanks to the use of lithium-ion technology, the cost of energy storage has been reduced by 50%.However, energy accumulation systems using lithium-ion batteries present unique challenges for fire safety design within buildings. They pose a new fire hazard that could be difficult to control and has no current UK regulation.Fire risks associated with the use of lithium-ion batteriesLithium-ion cells consist of two electrodes: negative and positive, with an ion-conducting, flammable electrolyte and separator in between, housed in cabinets or equivalent configurations that protect them.Any damage to the battery structure, mainly the separator, could casuse an internal short-circuit that can lead to ‘thermal runaway’, an unstoppable chain reaction resulting in rapid temperature increase and sudden energy release within the battery system. This could eventually lead to a catastrophic rupturing of battery cells and result in the remaining material burning at a very high temperature (over 8000C).Extinguishing fires caused by battery thermal runaway presents a challenge for firefighting. The combustion of lithium-ion cells produces oxygen which actually contributes to fire growth. The lithium-ion battery can also be seemingly reignited days or weeks after the initial extinguish.Thermal runaway is not classified as an electrical (Class C) or flammable metal (Class D) fire. Traditional dry chemical and clean agent suppression could eliminate the visible flame but lacks the ability to cool down burning battery components to prevent progressive thermal runaway. Research has shown that the water suppression system is currently the preferable approach to control the thermal runaway due to its superior cooling capacity.However, when combined with water, the lithium cells produce flammable gas (e.g. hydrogen), the accumulation of which could have an explosive effect when ignited, especially in the confined space such as compartments/rooms within a building.In addition, lithium can also produce an aggressive acid and toxic fume that is hazardous to the environment as well as harmful to people including firefighters. It is worth noting that fire suppression systems are currently being developed for lithium-ion batteries, although limited information is currently available.Mitigation and design considerationsDue to the complexity of the fire risk associated with such a battery system, especially in an enclosed environment, the control and mitigation measures should consist of multiple layers.The earliest detection of a lithium-ion fire allows the most effective response for both life safety and property protection. Although a Battery Management System can be designed and installed to shut down the affected charging/discharging circuit, and it plays an important role in reducing the fire risk, it would not be able to determine whether a fire is occurring.Off-gas detection should be designed into the battery system installation so that the failure of the battery cell can be detected in the ‘golden time’ before the occurance of the catastrophic thermal runway. In addition, in the compartment containing the battery system, a reliable detection system should also be provided to detect both electrical fire and electrolyte gas release.Many batteries have a safety mechanism to reduce the release of flammable gas or to prevent the battery exploding by the provision of internal ventilations. Deflagration venting should be provided, or a hazard mitigation analysis approach should be adopted, unless the energy storage system has been tested on a large-scale and can demonstrate that the flammable gas concentration in the room, building or compartment does not exceed 25% of the lower explosive limit.‘Energy storage systems in the built environment is a new topic for fire safety. The more we understand about its fire risk, the better we can design our buildings to accommodate smart energy systems.’In the design of the building and arrangement of the energy storage system, the number, arrangement and packing density of the battery modules can have a significant influence on the requirements for fire detection and extinguishing.Research has demonstrated that lithium-ion fire can be controlled by sprinkler system if the positioning, required discharge density of water and spatial separation of the energy storage system from combustible and non-combustible objects are designed following relevant guidance. Therefore, the location, separation and commissioning of the energy storage system should be given sufficient consideration in the early stage of the design.Energy storage systems in the built environment is a new topic for fire safety. The research, standards development and training for all relevant parties for their fire safety is ongoing. The more we understand about the fire risk, the better we can design our buildings to accommodate smart energy systems. Robust fire safety design of a smart energy system requires inputs from multiple disciplines. Early consultations with a fire safety engineer, local authority and system designer are crucial to ensure the safety, resilience and efficiency of the building are all integrated into the design.Source: https://placetech.net/analysis/how-to-ensure-your-smart-energy-battery-storage-system-is-fire-safe/

Batteries are widely used in our daily life which are portable storehouses of energy. The batteries can power common consumer electronics like smartphone, lights, cameras, or be used as backup power to store energy or power for electric vehicles. In order to make the batteries stay power up, charging the batteries is necessary. However, sometimes we may heard about the bad news about batteries of catching fire or other unexpected danger. Mostly, it is resulted from improper operation, such as wrong way to charge the batteries. Whether to charge the smartphones or other electronic gadgets, there may be certain risks, but a good charging habits could be helpful to minimize the risks.  Here are some common mistakes when charging the batteries:1. Forget to take off the batteries from charger or cut off the power after the batteries fully-charged;2. Charging the batteries for a whole day; and much more.What will happen when the batteries is charging incorrectly? In the absence of over charge protection of battery, charging batteries in an above wrong way will directly overcharge the batteries. The overcharge will result in damage of the internal cell structure or even cause failure and safety problems of batteries. Take lithium-ion batteries as an example, the maximum charging voltage of li-ion batteries is 4.2V, if the batteries is prolonged or extreme over charging, the batteries may increasing heat up and has the potential to cause an explosion finally. In the case of LiFePO4 battery, the absolute maximum is 4.2V per cell, it is recommended that you charge to 3.5-3.6V, because there is less than 1% extra capacity between 3.5V and 4.2V. Therefore, overcharge will not improve the capacity but damage the performance of batteries.When the batteries finish charging, it is suggested to cut off the power instead of overcharging. For cells that were overcharged, remember to avoid repeated charging them to full voltage. Charging to 80%-90% level of nominal capacity is a good way to avoid further degradation of the cells that were already overcharged. But sometimes charging a battery in a proper way maybe easy to forget.                                  Is there anything bringing peace of mind?For UFO POWER who is dedicated to manufacture lithium-ion battery, its LifFePO4 battery can be the answer to this issue. In case of failure to charge the batteries properly, each UFO LiFePO4 battery has equipped with a BMS which is developed by our R&D team. Battery safety is of great importance for user. The UFO BMS is able to disconnect the battery when it threatens to be over-charged or is discharged. Besides, the BMS also limits the charge and discharge current, monitors the cell temperature, and balances the cells each time a full charge is done which can help bring the cells inside the battery pack to the same state-of-charge. With a LiFePO4 battery, you can better enjoy peace of mind when using battery. To top it off, UFO LiFePO4 battery can equip with GPRS module, which can offer more convenience for battery in remote area and easier access to battery monitoring. LiFePO4 battery will give you a balance of long duration, high performance, fair cost and low environmental impact.                                  Pricing of lithium-ion batteries is changing from too much expensive to moderately affordable, and a steady growth of lithium-ion battery can be seen now. They are put to work in various applications, including RVs, electric three-wheelers, electric forklift, marine, while some are going into energy storage system, electric vehicles and telecom tower. What is a proper charging method?Actually, the battery may probably has worst degradation when it is fully charged. So that means if you always charge the battery when it get down to 20%, and stop charging when it get up to 80%, it could prolong the battery life. 

In the production of lithium ion battery pack , high-quality materials and modern technology are applied. Raw materials vary by project. The first step in a process is usually the most important. Therefore, manufacturers in this industry pay high attention to raw materials. Variations in the quality of the raw materials used in the manufacturing process often result in changes in the characteristics of the final product. SHENZHEN UFO POWER TECHNOLOGY CO., LTD. is an enterprise specializing in R&D, manufacturing, sales and service of high-end telecom battery. UFO POWER TECHNOLOGY's main products include ups uninterruptible power supply series. A core series of tests are performed on UFO lithium motorcycle battery. They are colorfastness testing, dimensional stability testing, fabric weight testing, flammability testing, etc. The product has longer charging and discharging cycle times than conventional lead-acid, AGM, gel batteries. The product has applications in a wide range of fields. The product is used in communication base stations in Southeast Asian countries.We are firmly committed to improving the quality of our products and processes on an ongoing basis, and we will unceasingly strive for targeted innovation in this field.

A finest-quality custom lithium ion battery can not be produced without well-selected raw materials. Different raw materials also determine different performance of products. Varied materials are used for the production of varied types of it. Because of different performance required by products, varied raw materials are also needed. Raw materials play an important role in designing products. A great and unique raw materials selection also determines an excellent and unique product. Since its establishment, SHENZHEN UFO POWER TECHNOLOGY CO., LTD. has continued to be a leader in lithium motorcycle battery industry. UFO POWER TECHNOLOGY's main products include lifepo4 battery pack series. UFO lifepo4 bms will be strictly inspected in terms of appearance. Checking points including loose/uncut thread, dirt mark, oil stain, wrinkle, and washing marks will be taken into account. It shows high compressive strength in the face of impact and collision. With such features as 12v motorcycle battery, lithium motorcycle battery is worth being popularized. It is sold worldwide such as Bangladesh, Malaysia and Indonesia.Customers will be amazed at how competitive our pricing is; we’re able to leverage our worldwide manufacturing, distribution, and logistical network on customer behalf. Inquire online!