Structural design principles of high-rate lithium battery packs

Although the single high-rate lithium battery shows excellent characteristics, the only way to choose the lithium battery pack is the power lithium battery. Because of the poor consistency of the single polymer cell lithium battery, the thermal solution process and the poor anti-vibration characteristics, it is found that the high-quality characteristics of a single lithium battery will be greatly reduced after the single lithium battery is put into the rechargeable battery during the whole process of use. The structure design of the high-rate lithium battery pack should conform to the following 6 principles: 1. The selected polymer battery lithium battery core should have stable charging and discharging characteristics; 2. A certain temperature control strategy should be adopted to ensure that the lithium battery pack is in a suitable Working within the temperature range; 3. Ensure that the high-rate lithium battery pack has a certain impact toughness, and consider the vibration regulations under the natural environment standard; 4. According to the use regulations of the natural environment of power engineering, the polymer cell lithium battery pack should be considered for insulation Layers and flame retardancy requirements; 5. The design method should be easy to install and maintain; 6. The middle of the lithium battery pack should be conducive to series connection. High-rate lithium battery pack operating temperature field manipulation is a key research direction in the overall design of polymer battery lithium batteries. The characteristics of large-space and high-power power lithium batteries are particularly sensitive to temperature changes, and the detailed performance is caused by high power. The high temperature problem causes the dissolution of the lithium battery electrolyte in the rechargeable battery, the dissolution of the SEI film, and the lithium battery electrolyte and positive and negative reactions. According to the improvement of the battery structure, the battery is working in a suitable temperature gradient, and the battery heat cannot be controlled. The core problem of thermal management of lithium battery companies is: how to guard against the uncontrollable heat of lithium battery companies. The key to the plan is to develop a design method from the structural level of the battery to ensure that the battery is in a suitable temperature range during operation, and to consider the compressive strength requirements of the car and water transportation. The overall design of large-capacity lithium battery components. The raw materials of the lithium battery package are made of high toughness plastic materials. The bottom of the battery box is thickened and equipped with multiple horizontal support rods, and the battery installation slot is embedded in the box body. In order to reduce the vibration of the rechargeable battery during work and the whole process of transportation, rubber pads are attached to the rechargeable battery installation groove, multiple ribs are modified on the baffle plate, and the centrifugal fan installation hole is embedded in the front plate. A nut is embedded in the board. In transportation and detailed work, the polymer cell battery will vibrate, and the vibration of the battery control module will loosen the connection between the rechargeable battery pole and the grounding copper bar, causing the resistor to expand and the point contact temperature to rise too high. In addition, the excessively high current will melt the loose grounding copper bar, and when the vibration is very large, the rechargeable battery control module is very easy to be destroyed. In order to better ensure the reliability of lithium battery packages under transportation and detailed operating standards, it is necessary to analyze vibrations under different standards. In the detailed application, the battery control module has been carried out vertical composite, abscissa, ordinate, transportation, ship and other levels of random vibration analysis. According to the simulation and decomposition statement, the system software considers the vibration technology standards. 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: How to judge the composition quality of lithium iron phosphate batteries?