High Voltage Connector “MY05 Series” for Battery Management System

Without a doubt, the dramatic changes happening now around the global automobile market is something that occurs once in a century. Various technological evolutions are progressing based on the megatrend Connected, Autonomous, Shared & Service, Electric (CASE).

Images of Electric Vehicles

Of particular importance is the shift to electrification. From the standpoint of decarbonization and carbon neutrality, there is no room for doubt that the shift to electrified vehicles continues to accelerate in the development of new vehicles. Electric vehicles (EVs) have actively been developed in various regions in the world, including Europe and China, which are leading the way. Furthermore, the same trend goes with countries in North America and in Japan, and their market continues to expand steadily. The EV development accelerates further. Thus, the number of market introductions of EVs will likely start to increase from around 2025.

In the development of next-generation EVs, makers put emphasis on improving the performance and the driving distance on a single charge. Consequently, batteries constituting a key device are required to have higher capacity, which results in longer charge times. To compensate this, increasing the charging voltage is a significant factor. Therefore, EV manufacturers and battery-related companies are making every effort to develop the technologies closely related to next-generation EVs.

BCU Voltage Increases

Structure of battery module and connector parts for high voltage

A battery pack installed in an EV consists of various units such as a battery module in which multiple battery cells are bundled together, a battery monitoring unit (BMU), and a battery control unit (BCU). Various connectors are used for joining these units together.
Particularly, the BCU connector needs to be compatible with high voltages for monitoring of the voltage of a battery pack. Furthermore, the support of high voltages such as 800 V  1,000 V is required for next-generation EVs.
Japan Aviation Electronics Industry (JAE) has promptly acted to address these needs and is now developing the 1,000 V high-voltage and low-current connector MY05 Series for BMS of EVs.