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Discussion Starter #1
Hi forum,
can anybody provide technical documentation regarding Citroen Venturi,

Especially technical details of the MES-DEA 3.2 kW charger BC-278-Z-3A-EF.

CAN message details to the BMI and to the display module would also be very welcome.

Cheers
 

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I am also interested in this charger.

Are you sure that it has a can bus? I think it is only coltrolled by PWM.

A pinout of the "signal connector" would be fine.

I have attached a datasheet I found on the internet.

I am also unsure if the charger will fit for my car. I have a 72 cell lipo pack.
So I have a voltage range between 208V and 290V. The charger is rated 240V to 325V. So what will happend if my battery discharges below 240V?
 

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Discussion Starter #3 (Edited)
Hi DerArtem,

Thank you for the generic datasheet.

This charger is not CAN controlled.

I could make it work on my bench by reverse engineering the connectors, see images attached.
Unknown is the rated PWM frequency, so a technical datasheet would be appreciated. I used a few kHz for testing.
Somewhere I found a note this charger works at PWM 5%..95%, else it shuts off.

I expect the charger works as a current source, so it will provide charging current based on PWM dutycycle as long as the output keeps in the 240V to 325V dc range.
Most likely you need to monitor the batterypack's state of charge and it's temperature by yourself.

Normally it is not a problem when the (Lipo) cells are discharged below a terminal voltage of 240V, the charger attempts to force current into the cells at lifting the terminals to 240V minimum.
However, the cells must be able to withstand charging at 240V minimum, when the charging current at this terminal voltage exceeds 26A max the charger will shut off.

cheers
 

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Ah, cool thanks.

I want to replace with it my broken Zivan NG9 charger.

The BMS is controlling the Zivan Charger via PWM, so here it should be fine as it will track the battery voltages and can reduce the charging by PWM when the batteries get full.

Are you sure that the MES-DEA Charger needs a 12V supply? It does not make any sense to me.

The Zivan charger had 2 additional AUX relais contacts:

AUX1 - "Mains Presence" - when the car is connected to power the contact gets closes. Then the BMS activates the battery pack and connects the High Voltage lines. It then also blocks the car from driving.
AUX2 - "End of charge or Trickle Phase" - When the Stop Phase is reached, the contact closes. I am not sure what this was used for as the BMS known on its own the charge state of the batteries and also monitors the current in and out. How ever this contact was connected.

So I need at least to get "Mains Presence" working with the MES-DEA.

Also where have you got the connectors for the MES DEA from? I can not find the MAIN CONNECTOR (amphenol 5440 MDA203F 3x25A) anywhere. So I think that I will have to replace it with a different one.
 

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Discussion Starter #5
The Zivan NG9 charger seems a fully autonomous charger. AUX1 to inform the BMS to close the switches between the charger and the HV battery. AUX2 to signal the charging process is ready.


The BC-278 is not an autonomous charger. Besides overvoltage and over current protection it is not intelligent, it tries to put current in the batteries based on the PWM input as long as the terminal voltage keeps in the min and max range.
Therefore the BMS must be able to monitor all important battery parameters (temp, SOC etc.) and stop PWM when required.

The existing AUX1 signal to your BMS can be realized by an external relais in parallel to the 220V AC supply of the BC-278. It seems to me you do not need AUX2 as the BC-278 follows the PWM out of the BMI.

I found the BC-278 connectors at Bart Ebben, specialist in Citroën Peugeot & used parts

https://bartebben.nl/

They have a lot of Citroën Berlingo Venturi parts.

Cheers
 

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Discussion Starter #6
Regarding the 12V supply to the BC-278 charger: this is required for the control logic part. The 220V mains is used for the power section that is isolated from the logic.

Cheers
 

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Thanks for your replies.

I have recived my charger today. Is is an BC-278-Z-3-A and not a BC-278-Z-3A-EF charger.
It has the same tech specs but has different connectors. The Mains connector is an 4-PIN CA3GS and a D-SUB 9 connector is used for the logic.

So far I have figured out:

PIN 1 - +12V supply (brown cable to lower PCB)
PIN 5 - GND supply (white cable to lower PCB)
PIN 3 - GND PWM (Green cable to top PCB)
PIN 8 - +12V PWM (Blue cable to top PCB)

Ok, accoring to the PCB the Green Cable is connected to Ground of HEF4016BT. So this one should be GND and the Blue one PWM+.

Can someone confirm this?

Thanks, Artem
 

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I have got the charger to charge now using a PWM signal from a arduino :)

However I can't get it running using the PWM signal from the Lithium Balance A/S s-BMS. The BMS provides a 1kHz PWM signal - so I think that this is the issue. The 500 Hz signal from the arduino seems to be ok...

Where have you got the info that the PWM signal has to be 305Hz from?

Thanks, Artem
 

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I have got the technical datasheet for the charger now.

The 12V of the charger is not an input - it's an output: 0,5A max to power a relais or something else in order to turn on the BMS. It provides 12V as soon as the AC mains is connected.

Here are the PWM details:

PWM Power control signal: Active high control signal with PWM
PWM signal frequency: 305Hz
PWM signal voltage range:8-30 Vpp
PWM signal modulation: 0% PWM Power OFF - 10% PWM Power MIN 32W - 90% PWM Power MAX, 3200W at 230V input
 

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I have got the technical datasheet for the charger now.

The 12V of the charger is not an input - it's an output: 0,5A max to power a relais or something else in order to turn on the BMS. It provides 12V as soon as the AC mains is connected.

Here are the PWM details:

PWM Power control signal: Active high control signal with PWM
PWM signal frequency: 305Hz
PWM signal voltage range:8-30 Vpp
PWM signal modulation: 0% PWM Power OFF - 10% PWM Power MIN 32W - 90% PWM Power MAX, 3200W at 230V input
Hi can you give me the technical datasheet of the charger?

hier ist my email : [email protected]

Thank you very much!!!!!!!!!!!

Rustam, from Cologne (Germany)
 

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Hello,
I have a peugeot partner by Venturi with very few kilometers showing shock = 103%, SOC> 102% battery disconected.
Battery voltage is 300V. Please help.
 
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