"Mileage anxiety" is an unavoidable topic in the new energy vehicle industry. In the short term, it is difficult to make breakthroughs in battery materials, and the improvement of battery energy density is limited. Then, optimizing the structure of the power battery and "freeing up" more space for the battery cell has become the only choice to improve the battery life of the car.
The road to slimming down the power battery
Traditional battery technology needs to go through the process of cell-module-loading, that is, the cells are first assembled into a module, and then the module is made into a battery pack, and finally combined with the car. The existence of the module makes the assembly requirements of the battery pack easier, but everything has advantages and disadvantages. The module structural parts and shell volume that cannot provide power squeeze the "living space" of the battery core, which naturally seriously restricts the battery life of the battery pack. The mileage of the car. Because of this, a new generation of CTP (Cell to Pack) battery technology came into being.
CTP battery technology can integrate the battery cells into the battery pack, thereby reducing or eliminating the battery module, so that the battery pack is integrated with the vehicle structure. Under the premise of no change in the space inside the car, the space utilization rate is improved. Undoubtedly, with the support of CTP battery technology, new energy vehicles have better achieved a balance between manufacturing costs and battery energy density. Recently, CTP battery technology has been maturely applied in a variety of new energy vehicles and achieved large-scale production.
Compared with CTP technology, CTC (Cell to Chassis) battery technology, which can save both modules and battery packs, has gradually entered the field of vision of major automakers. The CTC technology that breaks through the "battery pack limitation" can directly integrate the battery cells into the chassis of the car, further deepening the integration of the power battery and the chassis of the car, and greatly improving the space utilization. According to research, new energy vehicles using CTC structure can reduce parts by nearly 20%, reduce the cost of structural parts by 15%, and increase power by 15%-25%. Because of this, the cutting-edge CTC technology has attracted the close attention of major automakers.
CTP, CTC battery technology is expected to become mainstream
With the strong expectations of major manufacturers for power battery improvement and production cost reduction, CTP and CTC battery technologies will have a great chance to become mainstream. Of course, the deep integration of power batteries and automotive structural parts naturally puts forward higher requirements for their own safety, and the solution without modules also makes it more difficult for BMS (Battery Management System) to manage batteries. Driven by the development of CTP and CTC battery technology, battery management chips are naturally evolving. A battery management system with a more compact structure design and better space utilization will undoubtedly better meet the needs of market development.
Datang NXP's DNB1168 solution abandons NTC and other peripheral circuit designs, and has a built-in temperature sensor on the chip, which can greatly improve system integration while reducing the use of peripheral components and system BOM costs. The DNB1168 solution can fundamentally solve space problems, better adapt to CTP and CTC technologies, and help partners maximize the utilization of power batteries.
DNB1168 product application is highly compatible with CTC and CTP
1. The DNS solution is beneficial to save BMS sampling materials, save space in the battery pack, and improve energy density
2. The application of CTC and CTP technology achieves the purpose of saving space by eliminating the space of structural parts outside the module or battery pack, which perfectly fits with DNS to save the space inside the battery pack
3. The DNS solution is more conducive to the integrated design of the module, and has more advantages for the integrated replacement strategy of the battery pack
4. The unique impedance function of the DNS solution can screen out mechanically damaged batteries through EIS, so that they can be replaced in time and find potential safety hazards at the earliest stage
At present, major manufacturers are exploring new battery structures and actively deploying CTP and CTC-related businesses. The development and application of CTP and CTC new battery technologies will undoubtedly help companies effectively hedge the rising pressure of raw material costs and achieve cost reduction and efficiency increase. . Datang NXP has been deeply involved in the field of battery management chips for many years, has a profound accumulation of technology and talents, and its automotive-grade products have passed the functional safety certification of ASIL-D.
Article source: http://www.ameya360.com/hangye/109584.html, if there is any infringement, please contact to delete!