How to ensure the safety of the power battery?

Source: 2020 - 03 - 28 now hits: time how to ensure the safety of the power battery electric vehicle industry in the process of rapid development also with many problems, one of the most disturbing is frequent security problems, this greatly affected the determination of new energy vehicles. To solve these problems, radio and television surveyors MoGong belt we know the new energy automobile company did what efforts in this regard. At the top, the new energy automobile company for the safety of the battery will be the first to cut from the material, now, and lithium iron phosphate lithium titanate remained relatively stable chemical properties and therefore more secure. Second, some auto companies will choose the three yuan, relatively high energy density batteries, lithium cobalt acid lithium manganese acid. But, relatively poor thermal stability of these cells, so the choice of battery material is given priority to with the work environment. Second, the battery is made up of diaphragm cover, if the company chose to high temperature diaphragm, can shorten the temperature, travel and travel battery fault threshold. Second, we need to discuss the influence of different packing method for battery. In the process of packaging has a kind of packing is called soft packing box, packing boxes of coating material is aluminous model membrane, USES the hot melt technology to seal it. However, compared with other packaging method, this kind of packing strength is low, although the risk can be controlled blasting, but it can't control the direction of the broken. Third, the battery should have short circuit protection, which requires a noun: a ear. Patrol, a ears in the cells on the two levels of planning, when circuit against short circuit, very ear temperature rise sharply, generally are aluminum, copper. Now use the positive and negative ear the characteristics of different melting point to complete the circuit protection. Fourth, the side shell battery encapsulation in 0. 6 mm broad degree of aluminium alloy, based on the structure of planning to complete the protection of the battery. When an external circuit short circuit by ear protection, when the internal short circuit is to flip the OSD inverter on the shell and negative short circuit fuse of the reentry after short circuit. However, many of the lithium iron phosphate battery shell not have this kind of structure. Five, the battery with the valve at the top when the battery internal pressure change, deformation power first, if it continues to increase will be reversed, in order to prevent the detonation. Although you can complete the directional blasting, but this defect is the high cost of planning, planning. Sixth, module in the practical use of the ways we use exists, in the planning time for security reasons will be in the battery insulation pad gentle brewing for their own protection. On the sampling circuit, sampling circuit in circuit programming using the FPCB or PCB added between the fuse. Some manufacturers in the use of fuse can use aluminium wire to connect circuit directly. Widely used in the security of the system level, main circuit of the circuit breaker planning, BMS protection, etc. Eighth, about BMS and battery test, the main criteria is QC/T897 and GB/T 31467.