Hi Chris, the difference in Voltage is nearly nothing. There are about 100 cells connected in series. So the difference is 0.06V per cell. I think the battery in your test car was slightly warmer and newer that results in lower resistance, and lower resistance means less voltage while charging (Ohms law U=I*R). The only explanation for the drop can be that the cooling cannot keep up with the higher temperatures on your test day.
Did you walk in and out of the car? Because TeslaBjörn noticed a bug in the new MEB when you come back to the car and sits down the fan stops and the charge power drops for a while
@@BatteryLife Btw, the cooling capacity of MEB's battery pack is somewhat limited due to the form of cooling plate beneath the cells(not between cells vertically), which reduces the heat conduct area. Similarly, the DC charging capacity of PPE is 280kw Initially MEB models are designed with 100/125kw DC charging batteries, and later it has increased to 180kw(77kwh)/200kw(86kwh), and it probably has used up the reserves.
@@oijhhytdirhrbru Cooling is not related to peak charge rate, cooling affects how fast the EV can charge over long time (10-80% SOC). Also a larger battery can charge with higher average power. VW ID and MEB do very well. Cooling round cells vertically like Tesla S, 3 LR etc. is limiting. The outer layers are well cooled but the inner layers (inner end of rolled up band) has difficulty to dissipate heat. That limits the average charge power. Model, peak charge, average charge (10-80%) VW ID7 Pro S (86 kWh), 200 kW, 145 kW VW ID7 Pro (77 kWh), 190 kW, 125 kW Tesla S dual motor (95 kWh), 250 kW, 140 kW Tesla 3 LR dual motor (75 kWh), 250 kW, 124 kW VW ID7 145 kW, versus Tesla S with larger battery at only 140 kW.
Hi. After the last update at the end of June ID. buzz behaves similarly during charging, first the maximum charging power, then for about 7 minutes the power drops to 50kW, it starts to increase to 80kW and accelerates again to the maximum at a given percentage, plus it charges more strongly by about 5kW of charge than before the update, finally the charging time is identical. I reported it to VW, apparently it is set to high temperatures if the air conditioning was used before loading. During charging, if the air conditioning is on in the car, the car does not cool the battery, then it will display a message that it is turning off the interior cooling to cool the battery and it lasts a maximum of 7 minutes, then the fans are running.
How cheap was Buzz to not have dual climate for batery and interior. Peugeot Ion had that 15 years ago a first mass ev in europe and it costed then 18k euro
We saw also on Bjørn videos, after it’s reaching 51 degrees the power drops. The problem could be resolved if the AC system will try to cool down to battery to 24-25 degrees before charging. I’m curious if this issue appears also on sw 4, if you could taste on your car in a warm weather.
You need to become a bit more technical for such content to be informative. Use OBD interface and Car Scanner to monitor battery temperature. Starting from lower percentage and warmer weather might be the issue alone and having nohing to do with SW 5.0 or Tourer differences. Probably your ID7 would perform the same on similar situation, charging from 6% and not 10 and warmer weather.
Hello Chris - the R744 CO2 refrigerant is less effective for cooling than 1234yf refrigerant. So maybe Heat pump cars can occur rapidgate earlier than cars without heat pump.
I really like your videos, you do a great job but I would prefer if you had done some research before coming to video with speculation. You're very experienced, so I don't think you are far from the truth. The speculation invites more speculation from some of your audience.
Hi Chris, the difference in Voltage is nearly nothing. There are about 100 cells connected in series. So the difference is 0.06V per cell. I think the battery in your test car was slightly warmer and newer that results in lower resistance, and lower resistance means less voltage while charging (Ohms law U=I*R). The only explanation for the drop can be that the cooling cannot keep up with the higher temperatures on your test day.
Did you walk in and out of the car? Because TeslaBjörn noticed a bug in the new MEB when you come back to the car and sits down the fan stops and the charge power drops for a while
Indeed, Bjorn did mention something about the cooling of ID7 stopping for a moment when entering the car during charging.
I was always in the car. Cooling fan comes on and turns off every minute
@@BatteryLife Btw, the cooling capacity of MEB's battery pack is somewhat limited due to the form of cooling plate beneath the cells(not between cells vertically), which reduces the heat conduct area. Similarly, the DC charging capacity of PPE is 280kw
Initially MEB models are designed with 100/125kw DC charging batteries, and later it has increased to 180kw(77kwh)/200kw(86kwh), and it probably has used up the reserves.
@@oijhhytdirhrbru Cooling is not related to peak charge rate, cooling affects how fast the EV can charge over long time (10-80% SOC). Also a larger battery can charge with higher average power. VW ID and MEB do very well.
Cooling round cells vertically like Tesla S, 3 LR etc. is limiting. The outer layers are well cooled but the inner layers (inner end of rolled up band) has difficulty to dissipate heat. That limits the average charge power.
Model, peak charge, average charge (10-80%)
VW ID7 Pro S (86 kWh), 200 kW, 145 kW
VW ID7 Pro (77 kWh), 190 kW, 125 kW
Tesla S dual motor (95 kWh), 250 kW, 140 kW
Tesla 3 LR dual motor (75 kWh), 250 kW, 124 kW
VW ID7 145 kW, versus Tesla S with larger battery at only 140 kW.
Hi.
After the last update at the end of June ID. buzz behaves similarly during charging, first the maximum charging power, then for about 7 minutes the power drops to 50kW, it starts to increase to 80kW and accelerates again to the maximum at a given percentage, plus it charges more strongly by about 5kW of charge than before the update, finally the charging time is identical.
I reported it to VW, apparently it is set to high temperatures if the air conditioning was used before loading. During charging, if the air conditioning is on in the car, the car does not cool the battery, then it will display a message that it is turning off the interior cooling to cool the battery and it lasts a maximum of 7 minutes, then the fans are running.
I think it shares the AC
How cheap was Buzz to not have dual climate for batery and interior. Peugeot Ion had that 15 years ago a first mass ev in europe and it costed then 18k euro
We saw also on Bjørn videos, after it’s reaching 51 degrees the power drops. The problem could be resolved if the AC system will try to cool down to battery to 24-25 degrees before charging. I’m curious if this issue appears also on sw 4, if you could taste on your car in a warm weather.
You need to become a bit more technical for such content to be informative. Use OBD interface and Car Scanner to monitor battery temperature. Starting from lower percentage and warmer weather might be the issue alone and having nohing to do with SW 5.0 or Tourer differences. Probably your ID7 would perform the same on similar situation, charging from 6% and not 10 and warmer weather.
The actual KWh delivered was always pretty close to each other 🤷♂ Less top buffer?
Aren't you also on Facebook in case someone doesn't have IG?
Hello Chris - the R744 CO2 refrigerant is less effective for cooling than 1234yf refrigerant. So maybe Heat pump cars can occur rapidgate earlier than cars without heat pump.
Would be nice to compare two cars, one with and one without heat pump
I really like your videos, you do a great job but I would prefer if you had done some research before coming to video with speculation.
You're very experienced, so I don't think you are far from the truth.
The speculation invites more speculation from some of your audience.