PR99553

SEOUL, South Korea, Feb. 10, 2023 /PRNewswire=KYODO JBN/--

Developed an 800V wireless BMS for the first time in the industry.

The BMS combines the essential components for wireless communication into one

module that is compatible with all communication chips.

The company implemented an advance inspection system for checking the

communication performance of a BMS, enhancing the convenience of its customers.

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.

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.

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.

To send and receive data for an electric vehicle battery wirelessly, a wireless

BMS must be equipped with dozens of components such as an RF circuit, RF

communication chip and antenna.

In the case of previously released wireless BMS's, these components were

attached one by one to a PCB. Because of this, the BMS production process

required a lot of time and there was too much development burden in expanding

the product lineup.

On the contrary, LG Innotek first applied to its wireless item an RF

communication module that it had developed using its high-precision,

high-density, multi-layer board technology. The RF communication module is

composed of a four-layer board and dozens of wireless communication components

that were densely integrated into this board. This structure helped the company

to develop a wireless BMS on which the battery pack could be mounted much more

easily.

Above all, the RF communication module mounted on the company's wireless BMS is

designed to be compatible with all types of communication chips. This

compatibility enables applying the company's Wireless BMS easily to all

electric vehicles produced by its clients. This is the reason why LG Innotek is

regarded as having a vantage point in occupying in advance the global market

that has just started.

LG Innotek established a simulation technology for the first time in the

industry that enables virtual inspection of wireless communication quality on

its own at the development stage of a battery pack.

The company's virtual inspection system has proven its effectiveness by showing

that the communication quality of wireless BMS's that it had predicted matched

the actual measurement results by more than 95%. The company's virtual

inspection system ensures only products that passed the inspection to be

provided to its clients and thus eliminates the need for automobile and

automotive component manufacturers to request a separate inspection test.

LG Innotek plans to start mass production of the wireless BMS in 2024. To do

so, the company will actively conduct promotional activities targeting major

domestic and overseas automobile manufacturers starting the first half of this

year, accelerating its move to occupy the relevant market in advance. In

addition, the company plans to start the development of an Electric Vehicle

Charge Controller (EVCC) wirelessly by leveraging the technology that the

company acquired this time.

According to industry sources, it is expected that major global automobile

companies will adopt a wireless BMS in earnest starting the year 2024.

Accordingly, the size of the global related market, which was only USD 7.16

million in 2022, is expected to grow drastically to USD 1.1 billion in 2028.

Yoo Byaeng-kuk, Vice President of the Automotive Components & Electronics

Business Unit, said, "We will continue to release next-generation automotive

electrical components that provide differentiated customer value, and expand

our global foothold as a total solution provider in near future."

[Glossary] Battery Management System (BMS): BMS is an essential component for

electric vehicles that monitors the voltage, current, temperature, etc. of a

battery in real time to optimize the performance and life span of the battery.  

When the BMS receives data from a battery cell, the electronic control unit

(ECU) of the vehicle controls the power input/output according to the state of

the battery cell. Most of the electric vehicles produced up to now have wired

BMS's on them. Multiple BMS's are connected via copper cables (wire harness)

inside a battery pack. Because of this, the cables and connectors occupy a

significant portion of the battery pack's volume and weight.

SOURCE: LG Innotek

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   Caption: 800V wireless BMS which is the world first product.