What are the relevant factors that affect the structural design of lithium battery packs?

The structure design of the lithium battery pack is an extremely important part of the entire battery pack system design, and it is the part that takes the most time in the entire design process. Let everyone know about the content that affects the structural design of the lithium battery pack. The basic structure of lithium battery is important materials: positive electrode, negative electrode, electrolyte, diaphragm structure: round, square; laminated, winding form: polymer (soft packaging), liquid lithium ion (steel shell). Different factors affect lithium battery packs. The influence of the structure design █ The trend of the discharge characteristic curve The trend of the discharge characteristic curve, it is important to pay attention to the slope of the discharge curve of the cell. Different types of batteries have different basic discharge trends. The power delivered by a battery with a sloping discharge curve gradually decreases throughout the discharge cycle. This may cause problems for high-power applications at the end of the post-discharge period. For low-power applications where the supply voltage is to be stabilized, if the slope is too steep, a voltage regulator may be installed. This is generally not suitable for high-power applications, because the loss of the regulator consumes too much power from the battery. █The discharge characteristics of the battery at ambient temperature are extremely affected by the ambient temperature. If the lowest temperature of the lithium battery pack is below 0°C, the electrolyte itself may freeze in some batteries with water-containing electrolyte; even if the organic electrolyte does not freeze, the battery performance will decrease significantly, so low temperature should be considered The problem of the impact on the battery. If the power lithium-ion battery is used in an environment with extremely high ambient temperature, the electrode active material is likely to react with the electrolyte at high temperatures, which may cause loss of capacity and may also cause safety risks. In the temperature range that the battery can withstand, the battery performance usually increases with the increase in temperature, for example, the capacity increases and the internal resistance decreases. Each battery cell has an optimal working temperature. The ideal situation is to create this suitable working temperature for the battery. A higher or lower temperature will affect the cycle life. █Pulse performance The ability to deliver high-current pulses is a requirement for many batteries. The current carrying capacity of the battery depends on the effective surface area of u200bu200bthe electrode. But the current limit is determined by the rate at which chemical reactions occur in the battery. When there is a requirement regarding the power usage range of the battery, knowing the pulse capacity of the battery cell helps to design a more suitable lithium battery pack battery cell. After determining the range of use, environment and other factors that affect the structural design of the lithium battery pack, after the lithium battery pack is designed, it must be tested to ensure its safety, stability and practicability. 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: What are the advantages of lithium battery electrolyte