Column: Electric vehicles
A small, 98%-efficient bus converter module weighing only 68g (Vicor part CM6135) can be bundled easily with EMI filtering, a reduced cooling structure and enclosure to replace the 25kg 48V battery. Tis frees up considerable space and weight, and can yield savings to €250.
2. Flexibility/scaleability A flexible and scaleable modular power system design approach allows designers to implement standardised solutions across a wide variety of powertrains, such as for SUVs, minivans and light-duty trucks. For example, a minivan’s power
requirements may be 5kW, but powering a light-duty truck with lightbars, tow and plow packages and AC power stations may require 10kW. Using the same modular platform and a little extra space, engineers can quickly add or remove pre- qualified parts to the array to scale power up or down.
While OEMs are introducing electrified
emission compliance standards, there has yet to emerge a harmonised approach for delivering electric power, not only
vehicles to meet CO2
to the motors but to all the vehicle subsystems
Modularity also allows distributed
power architectures from a 48V bus. Power modules can be placed in convenient locations for localised 48V/12V conversion, say, behind the glove compartment, near the boot or by a wheel. Modularity goes beyond design
flexibility, since it allows a better way to streamline power changes and the manufacturing process.
3. Re-usability In vehicle development, qualification and approval of electronic components adds to delays, a process that can take up to three years. So, finding a way to reuse components can save on time and costs. For example, a traditional PDN based
on a discrete DC-DC converter design can consist of over 200 bulky components, whereas modern advanced technologies provide a single high-density power module, simplifying the design and weight of the vehicle.
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Cupio Electronics World and Energy Management
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www.electronicsworld.com September 2022 ?? 31/08/2022 12:07
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