Path: EDN Asia >> News Centre >> Power/Smart Energy >> Redefined BMS in EVs expands functionalities
Power/Smart Energy Share print

Redefined BMS in EVs expands functionalities

06 Aug 2014  | Klaus Scheibert

Share this page with your friends

Security schemes based on cryptography algorithms present exciting opportunities for new capabilities in the BMS. These take advantage of MCUs with an integrated hardware security module (HSM).

For example, the battery can be protected from third-party tampering such as aftermarket replacement of battery cells. Relevant parameters, essentially a digital "fingerprint" of each battery cell, can be stored in a secure, memory-protected area. Cryptography algorithms can use the HSM for additional capabilities such as comparing the amount of charge recorded by the BMS and the amount charged to a customer to ensure accurate billing.

Assured authentication also may be a part of future vehicle-to-grid communications, for example, in demand response charging schemes.

Another emerging application is a vehicle energy management concept that takes advantage of intelligence in the powertrain, in-car navigation unit and communications to traffic information sources (sensors and even other cars).

Real-time traffic and road condition information, combined with knowledge of trip destination, will make it possible to compare energy needed for specific route choices available and recommend the most efficient route.

With increased capability of the BMS, OEMs can re-evaluate the electronic topology of hybrid and all-electric vehicles. Many current designs use both an inverter control unit and a separate vehicle control unit to manage higher-order driving strategies.

An architecture that distributes VCU tasks into the inverter controller and BMS can reduce the overall cost for vehicle electronics. The prerequisite for this is the capability of the BMS to support broader functionality in terms of available memory and real-time performance. These functional requirements are met by today's most advanced automotive MCUs, creating new opportunities for innovation in vehicle design.


 First Page Previous Page 1 • 2


Want to more of this to be delivered to you for FREE?

Subscribe to EDN Asia alerts and receive the latest design ideas and product news in your inbox.

Got to make sure you're not a robot. Please enter the code displayed on the right.

Time to activate your subscription - it's easy!

We have sent an activate request to your registerd e-email. Simply click on the link to activate your subscription.

We're doing this to protect your privacy and ensure you successfully receive your e-mail alerts.


Add New Comment
Visitor (To avoid code verification, simply login or register with us. It is fast and free!)
*Verify code:
Tech Impact

Regional Roundup
Control this smart glass with the blink of an eye
K-Glass 2 detects users' eye movements to point the cursor to recognise computer icons or objects in the Internet, and uses winks for commands. The researchers call this interface the "i-Mouse."

GlobalFoundries extends grants to Singapore students
ARM, Tencent Games team up to improve mobile gaming


News | Products | Design Features | Regional Roundup | Tech Impact