What are the differences between power lithium-ion batteries and capacity batteries?

I believe everyone is familiar with lithium batteries. We can see lithium batteries in our mobile phones, notebooks, power banks, including the new energy electric vehicles that are being implemented! Life and health have always been a key topic of human concern. In the early nineteenth century, in order to power pacemakers, they also contributed to the development of lithium batteries. Batteries supply the source of power. Electronic equipment is undoubtedly equivalent to the importance of the heart to people. The general public who has not in-depth knowledge of lithium batteries think that lithium batteries are almost the same, but the difference in size and capacity! But in fact, there is really a big difference. Lithium batteries are divided into many types in terms of raw materials. If you want to know where you can follow me and search for the types of lithium batteries, what is a power lithium-ion battery? What is a capacity battery? Capacity batteries are important to provide products with longer battery life, and lithium batteries with energy density as an important research and development direction. For example, the consumer electronic devices we use daily, mobile phones, notebooks, power banks, etc., you can find that with the improvement of technology, its battery life is gradually improving, and the volume is constantly getting smaller. The first difference is the difference in size. Most of the capacity batteries are used in consumer products, which are generally small in size, such as mobile phones. Power lithium-ion batteries are generally large in size, such as drone batteries. Second, the discharge difference, the internal resistance of the capacity battery is large, and the discharge current per unit time is small. The power lithium-ion battery has a small internal resistance because of the high power of the equipment to be driven, and the discharge current per unit time is relatively large. In the battery industry, the power lithium-ion battery adopts double-stack bipolar ears in the unit of a single cell, or multi-body as the unit in parallel to increase the current of the entire battery pack. The battery capacity is affected by the current at the output terminal, so The direct use of parallel connection is to increase the capacity of the power lithium battery pack. The capacity of the battery pack connected in this way tends to be relatively large, because the internal resistance is large and the discharge current is small, so the continuous discharge time is long. 3. Safety differences 1. For its own safety, capacity batteries are generally used alone, while power lithium-ion batteries are generally used in groups, which makes the safety design of power lithium-ion batteries more complicated. In terms of simple heat dissipation, capacity batteries It can completely dissipate heat by itself, and the power lithium-ion battery formed into a group must also consider the heat dissipation channel when designing heat dissipation. 2. Product safety, the capacity battery provides little protection to the product, most of which are the safety design of the product itself, so the capacity battery itself can only resist various safety-critical situations on the basis of higher energy density and rely on the battery material and design. . The main body of the power lithium-ion battery is generally of higher value, with more design redundancy, and thicker diaphragms, foils and casings are used to ensure the safety of the main body of the product, so the energy density is not as good as the capacity battery, but the power lithium Ion batteries have more external protection circuits, heat dissipation layouts, etc., of course, they also face more severe conditions (higher external voltage, greater current, more complex external environment). Fourth, consistency, capacity batteries do not need long-term reliability, because most of them are used alone in consumer electronics, so there is not much requirement for consistency, but due to the limited product space, the size requirements of consumer capacity lithium batteries Strict, capacity, energy density and other requirements are very high. High-end consumer batteries use the most advanced technology and materials, while power lithium-ion batteries require more advanced process control, consistency control and quality management. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What are the advantages of cylindrical lithium batteries? What is its structure?