In recent years, the rapid development of lithium-ion batteries has attracted great attention. Their development is mainly driven by three aspects: electronic consumer products, electric vehicles, and energy storage. For lithium-ion batteries, the conflict between energy density and safety is the most controversial topic. Lithium-ion battery manufacturers and users instinctively want higher energy density. In fact, nothing is perfect, and the conflict between energy density and safety has been a long-standing issue for lithium-ion batteries. Currently, the challenges facing lithium-ion batteries mainly come from the following aspects: safety, cycle life, and fast charging function.
The energy density is the amount of stored energy per given space or mass unit. The larger the energy density of start-stop battery technology, the more energy can be stored per unit volume or weight. The energy density of batteries is generally divided into two dimensions: weight energy density and volume energy density.
Generally speaking, the main factors affecting the energy density of start-stop AGM batteries are the four main materials of lithium-ion batteries: anode materials, cathode materials, electrolytes, and separators, and that anode and cathode materials are the key factors in determining the chemical reactions of lithium-ion batteries. In addition, the production technology of lithium-ion batteries, such as compact density and foil thickness, will also affect the energy density of the battery.
The safety of power batteries mainly lies in preventing short circuits and overcharging, thermal runaway, burning, and circuit protection. As we all know, the unit volume capacity, the number of cycles, the rate, and safety of lithium-ion batteries are closely related. The higher the energy density, the greater the safety risks.
In summary, the safety performance of start-stop AGM batteries is closely related to the energy density, but not only because of the high energy density, but also because it is closely related to the battery pack level (battery and environment), system level, and functional safety. In fact, one aspect of the performance improvement of lithium-ion battery products will inevitably sacrifice other aspects of performance, which is the basic knowledge of battery design and development. In addition, energy density is not the only standard to measure the quality and safety performance of lithium-ion batteries. Lithium-ion battery manufacturers should strive to improve production technology and seek the maximum balance between energy density and safety performance of the battery.
The above is the relevant consultation about start-stop AGM batteries in the automotive field organized by Jinyuecheng. Through the sharing of this content, you should have a certain understanding of automotive start-stop lithium-ion batteries. If you want to learn more about the market information of automotive start-stop lithium-ion batteries, please feel free to consult us.