LG Innotek (CEO Jeong Cheol-dong) announced on 9th that it had succeeded in developing a Wireless Battery Management System (Wireless BMS) that improved battery performance drastically.
A BMS, an essential component of electric vehicles, is a control system that monitors the voltage, current, temperature, etc. of a battery to optimize its performance and life span.
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The wireless BMS that LG Innotek developed is embedded with an Radio Frequency (RF) communication module that combines essential components for wireless communication, such as a RF communication chip and antenna, into one unit for the first time in the world. With this product, the company is regarded as having proven its competitiveness to occupy the rapidly growing wireless BMS market in advance.
The key advantage of a wireless BMS is that it contributes to reducing the weight of vehicles mounted with a BMS. Once the cables connected to the BMS are removed, the vehicle weight is reduced by 66~198Ib. Removing the dozens of cables and connectors required for a BMS reduces both the weight and volume of a battery pack.
This secures additional space of 10~15% for a battery pack, enabling increasing the capacity of a battery. That is, the mileage of an electric vehicle can be increased further. It has been confirmed that a wireless BMS increases the mileage of an electric vehicle by up to 12mile. The additional space for a battery pack improves the flexibility of battery design and allows, for example, changing the battery pack structure, increasing the added value of this item.
In addition, the adoption of a wireless BMS enhances the reliability of a product that uses it still further. First, the possibility of cable or connector defects due to the shaking of the vehicle will completely disappear. Furthermore, the assembly of a battery pack previously conducted manually due to the complexity of cable connections can now be automated using a robot, achieving cost reduction.
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For these reasons, this type of BMS has surfaced as the main component of an electric vehicle as well as a self-driving vehicle, garnering the attention of global automobile manufacturers.
LG Innotek developed a wireless BMS that provided customers with differentiated value by utilizing the synergy between its BMS production capacity that it had accumulated for the past 14 years and its unrivaled wireless communication module technology.
The company’s new product employs 800V, which is the highest voltage among commercially marketed BMS’s. The company had already succeeded in developing an 800V wired BMS in 2020. Since the charging duration decreases as the voltage increases, domestic and overseas automobile makers tend to adopt 800V as their voltage system for electric vehicles.
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