Soft package integrated power battery technology research

Source: 2020 - 04 - 04 13:15 hits: soft package power battery integration technology research abstract: the development of science and technology, environmental requirements, such as national policy trends, the outbreak of the electric car industry has entered a period, soft package power battery with high safety performance, high energy density, low cost, long life and other advantages, is widely favored by automobile enterprises. Puts forward an integrated technology of soft package of battery based on fixed adhesive paste, which can realize fast soft package power battery assembly, and effectively guarantee the reliability of the battery pack and vibration reduction, etc. , has important practical significance of integrated research of soft package power battery electric cars. Keywords: soft package power battery; The electric car; Integration technology is introduced into the '12th five-year period, China vigorously support the development of new energy electric vehicles of high and new technology plan, the government policy, cost and convenience of the three factors of success, to promote the vigorous development of the electric car market. Especially since last year, the new energy automobile market gradually open. 2014 new energy automobile production rose nearly four times, in the first quarter of 2015 year-on-year rate of increase in the production of 2. 5 times. The electric car is the main influence factors in the development of power battery. In recent years, the east wind, byd and other mainstream electric car companies began to adopt a large number of soft package power battery. Soft package power battery with its high safety performance, high energy density, low cost, long life and other advantages favored by more and more people. Including samsung SDI, dongguan ATL, Japan's SONY, LG, etc. , each big soft package battery manufacturers in intensify the study of soft package of power battery, and soft package power battery integration technology research is behind the development of the electric car market. Soft package way of fastening power battery, battery pole ear connection mode and test, etc. , this paper puts forward a kind of adhesive paste soft package mode of integrated power battery technology, test results show that this method can quickly realize the integration of soft package of battery power, effectively guarantee the reliability of the battery pack, vibration resistance, electric vehicle power battery and soft package integration research has important practical significance. Soft package battery refers to flexible packaging material ( Usually a lu: su composite membrane) For the shell of lithium battery. It has small volume, light weight, than can be high, high safety, design flexible, etc. Soft package structure of the power battery USES aluminum-plastic film packaging, the positive and negative battery also USES battery pole ear structure, different from general plastic shell and metal shell battery. Therefore, soft package power battery fastening and series-parallel is soft package power battery integrated the two major difficulties. At present, specially for soft package integrated power battery technology research also is less, some company or university laboratories use soft package battery installed in mould manufacturing PVC plastic casing, and battery pole ear shall, in accordance with the requirements and nut welding method, integration of the battery pack, bolt connection in series. The method not only increase the weight of the battery pack, and reduces the energy density of soft package power supply. Battery form according to the soft power of soft package, not easily fixed, and will appear in the scratch the surface of the nature of the hole, crease, and so on, studies the fastening adhesive, dispensing machine into the soft package power battery assembly process, the use of a special cooling aluminum shell and adhesives, according to the requirement of the series parallel with adhesive monomer battery and heat dissipation aluminum paste, achieve the fastening battery pack. This method not only ensure the reliability of the battery fastening and vibration resistance, and easy to assemble.