NXP's DNB1168 passed ASIL-D certification, helping the growth of domestic automotive-grade BMS chips

     NXP announced that its automotive battery monitoring chip DNB1168 has passed ISO 26262:2018 ASIL-D certification, which can help new energy vehicle manufacturers build safer and more efficient battery management systems. The ASIL-D level is the highest functional safety level in the automotive industry. Datang NXP's DNB1168 has passed this certification, which not only marks that the device has reached the international leading level in terms of safety, but also means that the device has fully met the requirements of the automotive industry. The industry's most stringent R&D requirements for functional safety scenarios.

     In recent years, under the trend of "new four modernizations", the output of new energy vehicles has increased rapidly. Affected by this, the demand for power batteries, as the core component of new energy vehicles, continues to grow, and has gradually become the leading force in the growth of the lithium battery industry. However, due to the huge difference in the production process of power battery cells, which seriously affects the service life and safety of the battery pack, the BMS system is required to manage the battery to improve the safety performance of new energy vehicles.

     DNB1168 is a single-cell battery management chip that can provide electrochemical impedance spectroscopy tests for individual cells or parallel battery packs. And its integrated chip temperature sensor can be used to test the temperature of the cell, without the need to use an additional thermocouple NTC for temperature monitoring. In addition, the DNB1168 can directly monitor the internal cell resistance through dedicated circuit technology, thus providing a new method for evaluating the temperature inside the cell.

     For example, for the thermal runaway problem that is difficult to control for power batteries, the DNB1168 solution uses the AC impedance monitoring function to achieve rapid thermal runaway detection. Compared with the traditional NTC (thermocouple) method, the AC impedance monitoring function can provide a second-level response capability, which greatly improves the safety threshold of the power battery and prolongs the battery life. Based on strong technical support, DNB1168 can provide the battery management system with in-depth information on the internal state of the battery, bringing the ultimate battery safety, performance and value.

     Chen Jian, Marketing Director of NXP, said, "The safety of batteries is inseparable from the popularity of new energy vehicles. In recent years, although the promotion of new energy vehicles has been accelerating, accidents caused by batteries also occur from time to time. Therefore, the BMS system Its role is very important. Datang NXP has focused on the design of power management chips in the field of new energy vehicles and industrial energy storage since its establishment, and is committed to bringing mature battery safety technology to users through high-performance BMS chips. , Due to the relatively high technical threshold in the BMS subdivision field, before this, BMS chips have been highly dependent on imports. In this context, DNB1168 has passed ASIL-D certification, which can not only provide users with high-security The automotive-grade products also represent the international leading level of Datang NXP's chips, which is a milestone for the entire domestic BMS chip industry."