Battery Manufactory

Against the background of energy crisis and environmental pollution, lithium-ion batteries, as an ideal energy source for development in the 21st century, have received more and more attention. However, some failure phenomena may occur in the production, transportation, and use of lithium-ion batteries . Moreover, the failure of a single battery will affect the performance and reliability of the entire battery pack, and even cause the battery pack to stop working or other safety issues. Lithium-ion batteries often have certain failure phenomena during use or storage, including capacity decay, internal resistance increase, rate performance reduction, gas production, liquid leakage, short circuit, deformation, thermal runaway, lithium evolution, etc., which seriously reduce lithium ion The performance, reliability and safety of the battery. These failure phenomena are caused by the interaction of a series of complex chemical and physical mechanisms inside the battery. Cla

Lithium-ion battery has a high energy density, its capacity is 1.5 to 2 times that of a nickel-hydrogen battery of the same weight, and it has a very low self-discharge rate. In addition, lithium-ion batteries have almost no "memory effect" and do not contain toxic substances. These advantages of lithium-ion batteries make it widely used in the field of new energy vehicles. Nowadays, the more widely used cylindrical lithium-ion batteries are 18650 batteries and 21700 batteries. 18650 battery: 18650 batteries originally referred to nickel-metal hydride batteries and lithium-ion batteries. As nickel-metal hydride batteries are now less used, they now refer to lithium-ion batteries. 18, 65, 0 is the originator of lithium-ion batteries --- a standard lithium-ion battery model set by SONY in Japan in order to save costs, where 18 means a diameter of 18mm, 65 means a length of 65mm, and 0 means Cylindrical battery. Common 18650 batteries include ternary lithium-ion

Lithium-ion batteries and lead-acid batteries are currently the two most widely used batteries. So what is the difference between these two batteries and which one is better? The following will focus on the difference between lithium-ion batteries and lead-acid batteries. 1. Introduction to Lithium Ion Battery Lithium batteries are a type of batteries that use lithium metal or lithium alloy as the negative electrode material and use 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. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. Lithium ion battery is a kind of secondary battery (rechargeable battery), which mainly relies on the movement of lithium ions between the positive elec

The influence of temperature on the performance of lithium-ion battery pack For lithium batteries, our focus is often on capacity and energy density. These data can usually directly reflect the length of the battery's cruising range. But what we should note is that most lithium batteries are the products of electrochemistry. Since they are related to chemistry, their performance has a great relationship with temperature. How much influence does temperature have on the capacity of a lithium battery pack? It can be seen that when the discharge current is 100A, the battery capacity shrinks by 1.7% and 7.7%, respectively, when the temperature goes from 20°C to 0°C and then to -20°C. This means that even if the temperature is as low as -20°C, lithium batteries can still reach more than 90% of the nominal capacity. It can be said that the influence of temperature on the capacity of the lithium-ion battery pack is relatively small. However, this does not mean that we can