208 km (129 mi.) in EV mode with a 2007 prius plugin 20kWh

[TimV]

I drive an Volvo V60 plug in Hybrid with 50km of EV range. I have a dailey commute of 60km. So i need something like 15km of extra range. I was thinking of adding an 48V batterypack in the trunck. This pack needs an dc to dc converter to add power in the high voltage pack. This pack is charged slightly lower then 400V. And empty around 290-300V. What dc booster are you using? I drive 2 times 35 to 40 minuten. So an 1 to 1.5 kW booster should do the trick.

[RedDevil]

Hi Tim, that may be difficult.
I tried to charge my Insights battery on the go, but it detects abnormal (> 17 Ampere) current flow and throws a code disabling the hybrid system.
Your Volvo might act in the same way, or not; at least Prii are more forgiving (apparently).

That said, I too like to know what high-voltage DC-DC converters are available. I'd think a DC to AC converter and then a transformer and high-voltage rectifier bridge is the 'easy' way to do it.

One other way to extend your range is to have a big extra LiFePO4 12V battery and use that to power all the 12V stuff including the heater.
That may be enough to extend your range to 60 km.

[TimV]

There is no heater when running in EV mode. Then i wil choose backup plan B. Adding the 5kWh 24V lithium battery in the trunk. Put an 24V 1500W pure sine wave inverter on it with an time controlled relay. Let it charge with the stock charger for 2h. =25% =12-13km range. The only challange is how to run the stock cable from the inside of the trunk to the outside of the front of the car.

[planetaire]

Originally Posted by TimV

I drive an Volvo V60 plug in Hybrid with 50km of EV range. I have a dailey commute of 60km. So i need something like 15km of extra range. I was thinking of adding an 48V batterypack in the trunck. This pack needs an dc to dc converter to add power in the high voltage pack. This pack is charged slightly lower then 400V. And empty around 290-300V. What dc booster are you using? I drive 2 times 35 to 40 minuten. So an 1 to 1.5 kW booster should do the trick.

Hi,

I don't use a dc-dc between the stock Nimh pack and my A123 pack. They are // connected.
But between my A123 pack and a LG pack I use a meanwell hlg dc-dc converter.
My A123 pack is in "high voltage" around 230V DC, my LG pack is around 200V DC and the converter is between them.
Until the LG pack is at a lower voltage then the A123 pack the current is defined by the dc-dc converter. If not the amperage can be highter and not controlled.

If you want to use lower voltage, 48V for exemple, there have been an isolated converter that convert the 48VDC to 240VDC adjustable (Other voltage have exist for the Prius 1 for example)
But this system had thermal problem, overheating.