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As a result, an essential component in ensuring the safety of electric vehicles is a Battery Management System (BMS), which manages the electronics of a rechargeable battery, whether it is a cell or a battery pack.By ensuring that the cell operates within its safe operating parameters, it protects both the user and the battery.
In order to ensure that all cells have the same voltage, BMS balances environmental factors that have an effect on the cell, controls those factors, collects data, and monitors the battery’s State of Health (SOH).
A smart battery pack is one that has a BMS connected to an external communication data transfer system or a data bus.
The integration of fuel gauges, smart bus communication protocols, General Purpose Input Output (GPIO) options, cell balancing, wireless charging, embedded battery chargers, and protection circuitry are all potential additions that aim to provide information regarding the power status of the battery. The device may be able to use this information to intelligently conserve power.
A smart battery pack has the ability to manage its own charging, generate error reports, identify and notify the device of any low-charge condition, and predict the battery’s remaining runtime or life expectancy. In addition, it provides data on the cell’s temperature, current, and voltage, and continuously self-corrects any errors to maintain its prediction accuracy.
The embedded electronics of smart battery packs, which are typically made to be used in portable devices like laptops, increase the battery’s reliability, safety, lifespan, and functionality. These features make it possible to create more reliable and user-friendly final products.
With embedded chargers, for instance, batteries can be charged to their optimal, ideal specifications within temperature limits, allowing for longer life cycles. Users can confidently discharge batteries to their maximum capacity without fear of damaging the cell thanks to precise fuel gauges.
An interface called GPIO, which stands for General Purpose Input/Output (GPIO), is used to connect diodes, sensors, displays, and other electronic components and microcontrollers.
The Global EV battery management Controller market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
Sensata introduces a new electric bus and truck battery management system. The Lithium Balance n3-BMS, a new battery management system (BMS) for high-voltage applications, has been introduced by Sensata Technologies.
The Lithium Balance n3-BMS, according to the company, is ideal for applications with power up to 1000 volts/2000 amps, particularly battery manufacturers and electric truck, bus, and other heavy commercial vehicle manufacturers.
According to Sensata, battery packers and electric commercial vehicle OEMs are pushing for faster time-to-market and functional safety in their platforms, which is driving up demand for ISO 26262-certified components. However, the ISO 26262 certification procedure is time-consuming, costly, and complex.
The Lithium Balance n3-BMS is an example of an off-the-shelf, Automotive Safety Integrity Level (ASIL C) certified solution that can cut development time and costs.
Both the Lithium Balance n3-BMS and its predecessor, the n-BMS, are distributed systems with up to 30 Cell Monitoring Units (CMUs) for monitoring individual cells and a Master Control Unit (MCU) that consolidates the information and controls the functions of the battery.
Because the CMUs of the n3-BMS and the MCU of the n-BMS are fully compatible, it is simple to upgrade a battery system of any size from the n-BMS to the n3-BMS by simply replacing one PCB board.
This provides a convenient and cost-effective route to achieving an ASIL C certified BMS with a straightforward upgrade for developers working on heavy electric vehicles of the next generation who anticipate the requirement for an ISO 26262 certified system in the future.
