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How to Keep lithium battery safe
Introduction When it comes to the question about how to keep lithium battery safe, different people will have different thoughts. The proliferation of technology has allowed wireless electronic devices to be used at home, work and entertainment. As the number of devices increases, so does the number of rechargeable batteries in the devices around life. Small appliances such as smart phones, power tools, laptop computers, cordless phones, children’s toys, and handheld vacuum cleaners all use rechargeable batteries. Many of these devices are powered by lithium batteries: this type of battery is becoming more popular due to its long life and rechargeable characteristics. But like everything else, it has its drawbacks. If overheated or overcharged, these batteries pose a great risk. Overheating of lithium batteries can cause fires and explosions; if the batteries are damaged or overheated, they will ignite spontaneously. The battery may also be flammable when stored for a period of time when the temperature is too low or too high. There are many variables that bring risks to these batteries. Li-ion batteries have all the elements that can cause self-sustain a fire In order to keep lithium battery safe, we need to understand how lithium-ion batteries catch fire or explode. It is necessary to study how batteries work. Lithium-ion batteries store and release electrical energy through electrochemical reactions. When electrical energy is drawn/discharged from the battery, lithium-ions move from one electrode to the other. The electrode is immersed in a liquid called an electrolyte, which is composed of a lithium salt and an organic solvent, which allows ions to move. It is these organic solvents that are the main fire hazards of lithium-ion batteries. In addition, the positive electrode (cathode) in the battery contains oxygen. If the battery is subjected to specific stress, such as internal short circuit, overheating, etc., it will release
Lithium phosphate battery LiFepo4 battery 12v advantage
Lithium iron phosphate lithium-ion battery is referred to as lithium iron phosphate battery for short. Because of its performance, it is particularly suitable for power applications, namely lithium iron phosphate power batteries. Some people call it a “Lithium Iron (LiFe) Battery”. Lithium phosphate battery working principle The cathode materials of lithium-ion batteries mainly include lithium cobaltate, lithium manganate, lithium nickelate, ternary materials, lithium iron phosphate, and so on. Among them, lithium cobalt oxide is currently the cathode material used in most lithium-ion batteries. In principle, lithium iron phosphate is also an embedding and deintercalation process. This principle is identical to lithium cobaltate and lithium manganate. The positive electrode of lithium-ion batteries is lithium iron phosphate material, which has great advantages in safety performance and cycle life. These are one of the most important technical indicators of power batteries. LiFepo4 batteries with 1C charging and discharging cycle life can be achieved almost 1800 times, the puncture does not explode, and it is not easy to burn and explode when the batteries are overcharged. Lithium iron phosphate cathode materials make large-volume lithium-ion batteries easier to use in series. Main performance The nominal voltage of the LiFepo4 battery is 3.2V, the final charging voltage is 3.6V, and the final discharge voltage is 2.0V. Due to the different quality and technology of the positive and negative materials and electrolyte materials used by various manufacturers, there will be some differences in their performance. For example, the battery capacity of the same model (standard battery in the same package) is quite different (10%-20%). What I want to explain here is that lithium iron phosphate power batteries produced by different factories have some differences in various performance parameters; in addition, some battery performance is not listed, such as battery internal resistance, self-discharge rate, charge, and discharge temperature,
Can we extend the lifetime of lithium-ion batteries
Introduction In the past decades, lithium-ion technology has become the gold standard of the 12v 42ah Lifepo4 Battery industry. The lithium-ion battery is light in weight, long in life, and easy to charge, so it is very suitable for mobile devices. In addition, because of their rechargeable characteristics, lithium-ion batteries are used on various occasions. However, this is particularly annoying when a mobile device has to be charged in a public place where only one outlet is available. So, do you know that you can prolong their life? If you take the necessary measures, you can make your 12v 42ah Lifepo4 Battery perform better. In our article, you will learn more about the lifetime of lithium-ion batteries and the best ways to extend their life. What is the expected lifetime of lithium-ion batteries? Lithium-ion rechargeable 48v lifepo4 batteries need daily maintenance when being transported and used. The typical lifetime of lithium-ion batteries is about 2-3 years or 300-500 charging cycles. After these cycles, their charging capacity decreases by about 20%, and battery life will begin to decline rapidly. A charging cycle is defined as a period from full discharge to full charge, which can be composed of multiple partial discharges. This explains why people who use a lot of laptop computers often need to change their batteries frequently. In addition, the lifetime of lithium-ion batteries is affected because they are installed in mobile devices. Physical shock, vibrations, and temperature changes will damage the lithium polymer battery and shorten its service life. Why do lithium-ion batteries degrade over time? There are mainly three reasons cause lithium-ion batteries degrade over time. First of all, the more cycles a battery completes, the more its performance declines, thus shortening the battery life. That is because of the loss of mobile Li-ions in the battery. These are
Can we connect lithium batteries in parallel
Introduction Can we have batteries that can give me more voltage or current? The answer is yes. Lithium batteries can be connected to generate more energy to run larger motors or extra capacity. This is called connecting the 12v 42ah Lifepo4 Battery in parallel. Connecting the lithium batteries in parallel is one way to increase the ampere-hours of a battery (i.e. How long can the battery run on a single charge). For example, if you connect our two 12v 10 Ah batteries in parallel, you will create a 12 V 20 amp hour battery. Since many small motors, solar panels, saloon cars, boats, and most household electronic devices run on 12 volts, this is a common method for manufacturing batteries that can last for a long time. For example, a sailboat captain who does long open water expeditions needs a long-lasting power system wired to 80 of our12v 42ah Lifepo4 Batteries in parallel to create an 800 Amp-hour battery. This allows him to run all his sailboat electronic devices for up to one month between recharges. The Characterizes of the Parallel Lithium Batteries Voltage is constant, which increases the battery capacity, reduces the internal resistance, and prolongs the power supply time. The core content of parallel charging is the magnitude and effect of the parallel current. According to the theory of parallel connection, the current of the main circuit is equal to the sum of the currents of each branch. Therefore, the nth parallel lithium battery, which has been combined into a battery pack, should achieve the same charging efficiency as a single battery, and the charging current should be the sum of the currents of the n lithium polymer battery. Under the formula of ohm’s law: I = u/r, the design is reasonable. However, the internal resistance of
Why do lithium-ion batteries spontaneously combust
Introduction Lithium is the most reactive metal in the world. Lithium-ion batteries are the first choice for electric vehicles because they are small in size, high in density, and high in energy density. In the operation of 12v 42ah Lifepo4 Battery , using lithium ions to gain and lose electrons, migrate and accumulate them, so as to realize the storage of electric energy. However, lithium-ion batteries are extremely sensitive to high temperatures and are inherently spontaneously combustible. Due to heat, the degradation rate of these 12v 42ah Lifepo4 Batteries is often much faster than normal. If the lithium-ion battery pack breaks down, it will catch fire and cause extensive damage. This passage would list the main reasons in regards to why lithium-ion batteries spontaneously combust and provide some tips to avoid this situation happen. Reasons Cause the Lithium-Ion Batteries Spontaneously Combust Combustion or explosion usually occurs due to the lithium polymer battery can heat up to the point where the heat is out of control. Accumulation to the point of fire, or heat accumulation in a certain space to a certain extent will happen. As a lithium-ion battery, it is attributed to the following four reasons. First of all, excessive moisture content. Moisture can react with the electrolyte in the battery to generate gas. When charging, it can react with the generated lithium to generate lithium oxide, which will lead to the loss of the battery cell capacity. The lithium polymer battery is easy to overcharge to produce gas and decompose the water. The voltage is low, and it is easy to decompose to produce gas when charging. When this series of gas will increase the internal pressure of the battery, the battery will explode when the shell of the battery can’t bear it. Secondly, overcharge the lithium-ion battery. This is the most
Can a 12V lithium battery pack be recycled
The answer is “Yes”. Let’s explore the methods and advantages of 12v lithium battery pack recycling. The methods of 12v lithium battery pack recycling Discarded 12v lithium battery pack contain a large number of non-renewable and economically valuable metal resources, for example cobalt, lithium, nickel, copper, aluminum, etc. If the discarded or unqualified lithium batteries can be effectively recycled, it will not only reduce the pressure on the environment, but also avoid the waste of metal resources such as cobalt and nickel. To recover valuable metals from the discarded lithium batteries, the technical principle is to use hydrometallurgical technology for the separation and recovery of non-ferrous metals, including leaching, solution purification and enrichment, solvent extraction, etc.. Technical route First pre-treat the discarded lithium batteries (Including discharge, dismantling, crushing, sorting; recycling of plastic and iron shells after dismantling) Secondly, the separated electrode materials are subjected to alkali leaching, acid leaching, and impurity removal, and then extraction. Extraction is a key step to separate copper from cobalt and nickel; copper into the electrowinning cell for electrowinning to produce electrowinning copper; the cobalt and nickel solutions after extraction are then subjected to extraction and separation, and then the cobalt salt is directly obtained after crystallization and concentration. And nickel salt; or the cobalt and nickel separated by extraction into the electro winning tank to obtain the electro winning drill and the electro winning nickel . The recovery rate of diamond, copper and nickel in the electrode position process can reach 99%, and the grade can reach 99.98%, 99.95% and 99.2%～99.9%. Cobalt sulfate and nickel sulfate products can also meet the national inspection standards. The use of the wet recycling process has a positive effect on the recycling of discarded lithium battery metal resources. At the same time, the method is clean and environmentally friendly, low cost, high profit, and
Why are solar street light lithium battery widely used
Overview: At present, solar street light lithium batteries includes lead-acid batteries, gel batteries, and lithium batteries. Among them, the use of lithium batteries for solar street lights can quickly occupy the market due to some of its own advantages. Let’s take a look at why solar street light lithium battery are widely used? The working principle and structure of solar street light lithium battery The working principle of solar street light 12v 42ah Lifepo4 Battery is actually a kind of lithium concentration difference inserted battery, the positive and negative electrodes are composed of two different lithium compounds. When charging, Li+ is extracted from the positive electrode and inserted into the negative electrode through the electrolyte. The negative electrode is in a lithium-rich state and the positive electrode is in a lithium-poor state. At the same time, the compensation charge of electrons is supplied from the external circuit to the carbon negative electrode to ensure the charge balance of the negative electrode. When discharging, Li+ is extracted from the negative electrode and inserted into the positive electrode through the electrolyte, and the positive electrode is in a lithium-rich state. Under normal charge and discharge conditions, lithium ions are inserted and extracted between layers of layered structured carbon materials and layered structured oxides, generally only causing changes in the distance between the layers without destroying the crystal structure. During the charging and discharging process, the chemical structure of the material of the negative electrode is unchanged. Therefore, from the perspective of the reversibility of charging and discharging, the 12v 42ah Lifepo4 Battery reaction is an ideal reversible reaction. The tubular battery installations have an external hanging type and an underground type. It is best to install on the 6-meter high solar street light if use the external hanging type, and there should be no climbing
Introduction of 48 volt lithium battery
What is 48 volt lithium battery? Generally, the single battery on the market is about 3.7V, but in many cases, the operating voltage range is slightly larger, which obviously has the problem of insufficient voltage. At this time, can increase the battery voltage of battery packs and modular batteries will follow, in many high voltage batteries, 48 volt lithium battery has been widely used. Is it the optima battery in your heart？ 48 volt lithium battery charger It is specially used to charge luminous batteries with a nominal voltage of 48V. Lithium batteries have higher requirements for chargers and need protection circuits, so luminous battery chargers usually have higher control precision and can charge lithium batteries with constant current and voltage. The car battery charger has the functions of overvoltage protection and temperature protection. It is externally connected with a current-limiting charging power supply and a P-channel field effect transistor, which can safely and effectively charge a single lithium battery. Many people will be concerned about battery acid. Its significant feature is that it does not use, in the case of inductance can still achieve low power and the use of an 8-pin μMAX package. Charging control accuracy is 0.75%, which can realize pre-charging, limit the maximum charging time and provide secondary protection for lithium batteries. The floating charging method adopted by the lithium battery charger can maximize the battery capacity. The motorcycle battery is also a concern for many people. The 48 volt lithium-ion battery protection board It is a circuit board that plays a protective role. It is mainly composed of electronic circuits. It can accurately monitor the voltage of the cell and the current of the charging and discharging circuit under the environment of -40℃ to +85℃, and control the on and off of the current circuit in time. The luminous battery
How Much RV solar power Do I Need
Overview: Another common question we get asked is, can I run an air conditioner on solar power? Of course! If money is not an issue, you can do almost anything with solar. But the real question is, what is the minimum amount of RV solar power needed to power everything in your RV without wasting money? We’ll do this in three steps that include sizing your battery bank, calculating your RV solar power needs, and determining your solar requirements. keep reading! How much RV solar power do I need? This is a question we get asked all the time. Look no further because today’s post will cover what you need to know to correctly calculate your solar array and battery bank needs. Sizing Your Battery Pack To estimate your total energy requirements for an RV solar panel, sum the daily usage of all the appliances in your RV like our example below. You can find common watt ratings with a quick Google search or by looking at the labels on your appliances. In the extended example below, a total of 139 amp hours are needed daily. Amp Hour Calculation: Watt Hours ÷ Volts = Amp Hours As mentioned above, batteries are rated in watt-hours or amp hours. Such as, you would need a battery or pack of batteries with a capacity that adds up to more than 139 amp hours or a means to recharge at a rate that is equal to or faster than the rate you’re consuming. Also, I compare lithium batteries to lead-acid batteries, to learn more. Here is the general calculation: Usable Amp hours x Nominal Voltage = Usable Watt-hours So, if you need 1500 Watt hours each day, it’s good to have at minimum 1500 Watt-hours of energy storage. This would equate to about 2
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