The difference between 4G lte battery and battery

What is a 4G lte battery?

"4G lte battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. In 1912, the lithium metal battery was first proposed and studied by Gilbert N. Lewis. In the 1970s, M. S. Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have now become the mainstream.

What is a battery?

A battery is a device that directly converts chemical energy into electrical energy. It is a battery designed for rechargeability. It is recharged through a reversible chemical reaction. It usually refers to a lead-acid battery. It is a type of battery and belongs to the secondary battery. Its working principle: When charging, use external electric energy to regenerate internal active materials, store electric energy as chemical energy, and convert chemical energy into electric energy again when it needs to be discharged.

The above introductions about lithium batteries and storage batteries are all from Baidu Encyclopedia. Although the encyclopedia entries can be edited by everyone, the general authenticity of lithium batteries and storage batteries as industrial terms can be guaranteed. However, the encyclopedia entry can only be used as a simple reference. If you want to have a deeper understanding of lithium batteries or storage batteries, you can only get more accurate information by asking people in the relevant industries.

Since lithium batteries and accumulators can often appear together, it means that there are similarities between the two, that is, they are roughly the same in function, and both exist as power supply tools. However, in this article, we focus on the differences between the two, so we will not discuss the similarities here.

Let us continue to discuss the difference between 4G lte battery and storage battery. In addition to the difference in definition, the difference in performance is the focus of the difference between the two. It is the difference in performance that allows lithium batteries to almost completely replace lead-acid batteries in the current era.

Performance comparison of 4G lte battery and storage battery

Temperature tolerance: The common operating temperature of lithium batteries is -20-60 degrees Celsius, but generally when the temperature is lower than 0 degrees Celsius, the performance of the 4G lte battery will decrease, and the discharge capacity will be correspondingly reduced. Therefore, the full operating temperature of the 4G lte battery performance is usually 0~40℃. The temperature of lithium batteries required by some special environments is different, and some can even run normally in an environment of hundreds of degrees Celsius.

The operating temperature of the battery is generally required to be between 20℃-25℃. When it is lower than 15℃, its discharge capacity will decrease. When the temperature drops by 1℃, its capacity will decrease by 1%. If the temperature is too high (above 30℃), its service life will be reduced. Will be greatly shortened.

Cycle life: The cycle times of lithium batteries are generally around 2000-3000 times, while the cycle times of batteries are around 300-500 times. The cycle life of lithium batteries is about five or six times that of batteries.

Mass specific energy (WH/kg): 4G lte battery is 100-150, storage battery is 30-50.

"Volume ratio mass (Wh/L): 200-250 for lithium batteries and 60-90 for batteries.

In terms of charging and discharging: 4G lte battery has no memory effect; battery can be charged and discharged at any time, battery self-discharge is low, monthly self-discharge is less than 1%, battery can be stored for a long time; strong power, fast charge and fast discharge, 80% full charge in 20 minutes Above, the power can be discharged in 15 minutes.

The battery has a memory effect and cannot be charged and discharged at any time; there is a serious self-discharge phenomenon, and the battery is easy to be scrapped after being left for a period of time; the discharge rate is small, and it cannot be discharged for a long time.

There is another big difference between lithium batteries and storage batteries in terms of environmental protection. In this era of environmental protection, environmentally friendly and efficient batteries can better conform to the development trend of the times and be more widely used. In modern times, lithium batteries are used in all aspects of our lives, such as mobile phone batteries, watch batteries, power car batteries, and so on.

In these application fields, lithium batteries also have various shapes, sizes, and types. Among them, 4G lte battery packs are considered to have broad development prospects in lithium batteries. 4G lte battery packs can be used in small computer rooms, low-voltage rooms and other room sub-systems, communication base stations, indoor and outdoor non-air-conditioned sites, radio and television, military, petroleum and other unmanned sites. It can be seen from the application range of the 4G lte battery pack that the 4G lte battery pack is highly adaptable to the environment, suitable for unmanned sites, and saves manpower.

4G lte battery fast charging principle

High-current charging and fast charging are called fast charging. The main purpose is to reduce the charging time of the device and improve the efficiency of use.

The charging of lithium batteries is mainly divided into three stages, namely constant current precharging, high current constant current charging and constant voltage charging. In the first stage, when the voltage is lower than 3.0V, the charging management circuit (inside the device or the charger) will use 100mA current to precharge the 4G lte battery with constant current, the purpose is to slowly recover the over-discharged 4G lte battery, which is a kind of protection Measures. When the voltage of the 4G lte battery is higher than 3.0V, it enters the second stage, the high current constant current charging stage (C C Fast charge). Since the 4G lte battery has undergone the first stage of pre-charging, its state has been relatively stable. Therefore, in the second stage, the charging current can be appropriately increased. According to different batteries, the current can range from 0.1C to several C. C refers to the battery capacity, such as a 2600mAh 4G lte battery, and 0.1C refers to 260mA current. In this charging stage, the standard charging recommended by the state is to charge with a current of 0.1C. This is the standard charging. However, since the standard charging standard was proposed very early, it was proposed more than ten years ago. At that time, because the 4G lte battery technology was far less stable than it is now (high current charging is not allowed), the advantage of using standard charging is that the charging process is stable, and the probability of explosion is very small; the disadvantage is that it takes a long time! And fast charging refers to charging with a current greater than 0.1C at this stage. If the 4G lte battery capacity is 3000mAh, then the standard charging current is 300mA, as long as the charging current is greater than 300mA, it can be defined as fast charging. However, as far as the current level of lithium batteries and the level of charge and discharge management chips are concerned, charging with 1C current is no problem. So fast charging is not as dangerous as imagined.

Generally, the charging current of fast charging is 0.2~0.8C, so fast charging is still safe. Due to improvements in recent years, current chargers are basically fast-charging types. The last stage of 4G lte battery charging is the constant voltage charging stage. In this stage, when the voltage of the 4G lte battery is detected to be 4.2V, the charger enters the constant voltage charging mode. At this stage, the charging voltage is constant at 4.2V, and the charging current is increasing. The smaller (slowly full, the current will definitely become smaller~). When the charging current is less than 100mA, it is judged that the battery is full and the charging circuit is cut off. The characteristics of this stage can also explain why after the mobile phone indicates that it is fully charged, unplug the USB cable and plug it in again, and the mobile phone displays to continue charging. What needs to be said is that the above charging is the most ideal charging process for a single-cell 4G lte battery. The battery of a battery car generally has two types of lead-acid batteries and lithium batteries. These batteries are composed of several batteries (the lead-acid battery type is composed of 6 or 8 series and parallel; the 4G lte battery type is composed of several lithium batteries in series and parallel). When it comes to the charging method of the battery pack, there is another big problem here, which is the problem of battery balance. Regarding the issue of battery balancing, it is currently the biggest bottleneck in solving battery pack technology. Some electric vehicle batteries can be improved from BMS if their service life is not long.

How to use lithium batteries scientifically

Charge the battery correctly

Use a suitable 4G lte battery charger to charge your 4G lte battery. Make sure that the charger matches the battery model. When the battery is connected to the charger, first check whether the device is connected or the battery pin is fully connected. Do not leave the charging device and make sure not to charge on flammable surfaces. Do not have flammable materials around, so that if a fire occurs, the fire will easily spread. It is recommended to use a special fire-proof 4G lte battery charging bag, so that the fire can be controlled.

Don't have too much or too little battery

Each battery should never be charged more than 4.2V or discharged more than 3V. Both of these situations may cause permanent damage to the battery. If the battery swells during use or charging, it means that the battery has been damaged and cannot be used anymore.

Safe keeping

For safety reasons, it is usually best to store lithium batteries at room temperature and place them in a metal box or 4G lte battery fireproof storage container. If you will not use a fully charged battery for a few days, keep the battery at 40% when it is placed, and fully charge and discharge the battery every month. Lithium batteries do not have a "memory effect". If they are left for too long, they may no longer be charged.

Avoid extremes of heat and cold

Temperature will affect the performance and life of the battery. When you charge, make sure to do it at room temperature, that is, do not do it in a cold garage or basement, and do not do it in direct sunlight or near a heat source. When you charge or use a 4G lte battery, make sure to do it at room temperature. If the battery runs out of power, make sure that the battery has cooled down before charging.

Keep the battery clean

Dirty drones and dirty batteries will affect performance. Keep the drone battery box and battery connector clean. If the battery contacts become dirty, use a soft brush to clean them.

Long, healthy use cycle

Lithium batteries can be used for 300 to 500 charging cycles, depending on how often the drone is used, the quality of the battery and how it is maintained. If your battery stops working after only a few cycles, it means that these batteries are damaged, defective, or of poor quality, and you must stop using them immediately.

Ways to extend the life of lithium batteries

At present, the application of lithium batteries in daily life has been very extensive. For example, the mobile phone batteries and laptop batteries we currently use are basically lithium batteries. In terms of power batteries, they have also begun. Develop. Lithium batteries and lead-acid batteries have very different internal reactions and usage methods.

Lead-acid batteries are characterized by low requirements for the use environment and can still be used in some low-temperature environments. However, the internal charging and discharging process of lead-acid batteries is chemically changed, so the service life is relatively short. The advantages of lithium batteries are small size, light weight, and higher energy storage per unit mass. The movement of internal electrons is a physical change, so the battery has a longer service life.

Although comparatively speaking, the advantages of lithium batteries are indeed many, but to extend the service life of lithium batteries, there are still some problems that need to be paid attention to. At present, the use of power batteries is achieved by grouping batteries in series and parallel connection of single cells. Due to its characteristics, 4G lte battery packs have high requirements for the consistency of single cells. As long as there is one battery in a set of batteries, Unlike other batteries, the overall effect will be greatly reduced. Therefore, users of lithium batteries must pay attention to the care of the battery during use, and the other is not to overcharge and overdischarge.