ElectricMotorcycleForum.com

Makes And Models => Zero Motorcycles Forum | 2013+ => Topic started by: peterwarm on January 30, 2021, 07:41:14 PM

Title: SRF SRS 3 kW chargers how controlled?
Post by: peterwarm on January 30, 2021, 07:41:14 PM

I'm having some interesting discussion with a EV component supplier about how the 3kW chargers and the 6kW rapid charger work ( in the EU/UK)
From my experience they definitely need a CP handshake.

What we are uncertain about is whether the charger (actually its BMS) actively controls the current or does it just work as an on/off switch.

Anybody know?  Thanks. pete

Title: Re: SRF SRS 3 kW chargers how controlled?
Post by: remmie on January 30, 2021, 08:23:35 PM

Pete,

The CP and PP signals of the type 2 mennekes or J1772 connector go to MBB (Main bike board). Then the MBB communicates per CANBUS with the 3kW and 6kW chargers.

The MBB is positioned on the right side of the bucket of the frunk. The BMS is integrated in the batterypack (on the front) and communicates with the MBB regarding contactor, current, voltage etc.

In the attachment you can see the MBB (on the rights side of the additional 6kW charger) and the canbus of the chargers is the grey connector with the blue and white wires just below the MBB)

Title: Re: SRF SRS 3 kW chargers how controlled?
Post by: peterwarm on February 01, 2021, 12:14:53 AM

Thanks as always remmie.

So does this set up regulate the charge current to some formula?
Or is it fixed voltage charging, so as the voltage rises the current naturally reduces as in lead acid batteries?

pete