The auxiliary power transformer of new energy vehicles has a power of 2.4-6.6kw. How small can its volume be?

金昊德

The auxiliary power transformer of new energy vehicles has a power of 2.4-6.6kw. How small can its volume be? [Copy link]

 

The auxiliary power transformer of new energy vehicles has a power of 2.4-6.6kw. How small can its volume be?

First, let's think about a question. In our understanding, how big does a flat transformer for an automotive auxiliary power supply need to be? Is it the size of a car engine, or like a traditional industrial power transformer, it needs to occupy an area of about two square meters. In fact, its volume can also be as small as a palm. For a transformer of such a small volume, you would never imagine that it can actually achieve a high power of 2.4-6.6kw . Moreover, the high surface area to volume ratio and very short heat channel also make it have excellent heat dissipation characteristics. Secondly, the unique geometric shape of the magnetic core structure can minimize the core loss, and the small volume and high power. These main advantages of high frequency make it the preferred component in automotive electronics manufacturers. This may be the legendary "full-level transformer".

mingplus

The transformer for switching power supply 380Vac to 48Vdc/50A designed 20 years ago was about the size of the palm of your hand. With today's technology, this shouldn't be a problem!

se7ens

Switching power supply design concept

Small size, not enough space, high efficiency, otherwise there will be problems with heat dissipation

The frequency has been increased, the magnetic components have been smaller, the magnetic permeability has been increased, and the magnetic core can be smaller

Small size and high power design is becoming more and more popular

led2015

When we were designing a switching power supply, our boss said that the size must be smaller. At that time, we felt that all the design options were not good.

Gen_X

I just bought a 5kw one, which is about the size of an A4, but it may not be the same as what you said.

I bought a 220Vac power supply for electric vehicles, which is actually a DC/AC inverter. However, due to the protection of the car computer, there is an internal "response" communication, otherwise it cannot be used. That is, the battery in the car can be used as a power source and output externally.

The earliest one used seems to be BYD.