[kopaszkrapek]

Dear MX-30 users,
Strange charging anomaly discovered.
Lidl 50kW DC charger and given a cold battery 38%, the charging speed drops after 2-3 min from 37kW to 12kW .
However if you stop the charger, pull out the cable for a secound and restart charging it will start again on 37kW for 2-3 min. Repeated the whole procedure 8 times. Even at 74% it starts with 37kW and after 1-2 min drops to 12kW.
After all achieved far faster charging time to 80% compering to normal procedure.

Looks like BMS limits the charging speed after few minutes on cold battery but can be tricked.
Any ideas or explanations ?

 

[Drago92s]

Hello,
It's battery protection from Mazda.
We have the same behaviour.
How cold was your battery? If needle below the second line then it's 'normal'.

Might you activate the battery heating 'cold mode' if you mostly use DC charging but it will consume more energy to heat the battery.

 

[hgv]

Dear MX-30 users,
Strange charging anomaly discovered.
Lidl 50kW DC charger and given a cold battery 38%, the charging speed drops after 2-3 min from 37kW to 12kW .
However if you stop the charger, pull out the cable for a secound and restart charging it will start again on 37kW for 2-3 min. Repeated the whole procedure 8 times. Even at 74% it starts with 37kW and after 1-2 min drops to 12kW.
After all achieved far faster charging time to 80% compering to normal procedure.

Looks like BMS limits the charging speed after few minutes on cold battery but can be tricked.
Any ideas or explanations ?

On facebook I posted something very interesting .
It happened to be in the same charger with a second mx30 . I did a very interesting experiment in order to see the results .
Exactly as you say. After 40 minutes the 1st mx30 got 20% and the 2nd got 50 % , . The 50% is because it restarted the charger every 4 minutes.
The automatic heater never kicked in , it never started although in 2-3 C . The BMS is surely problematic or/and the battery configuration .
If you see other e-cars in the same conditions , the BMS system handles the situation beautifully , and the speed is -20% and not -70% .

Lets see. From my experience with mazda after sales support in Europe , I wouldnt expect any improvements or campaigns or actions in general. Its just too bad! Lets see.

 

[hgv]

Hello,
It's battery protection from Mazda.
We have the same behaviour.
How cold was your battery? If needle below the second line then it's 'normal'.

Might you activate the battery heating 'cold mode' if you mostly use DC charging but it will consume more energy to heat the battery.

The battery protection is there to protect the battery, but the driver is not protected as you understand if you need to stay three hours to charge the car.
You will never arrive in your destination.
The procedure with "cold mode" is not official . It is a trick. Normally you would expect smthg like that to exist as an option of the system i.e. the option to activate the pump by the driver.

 

[kopaszkrapek]

On facebook I posted something very interesting .
It happened to be in the same charger with a second mx30 . I did a very interesting experiment in order to see the results .
Exactly as you say. After 40 minutes the 1st mx30 got 20% and the 2nd got 50 % , . The 50% is because it restarted the charger every 4 minutes.
The automatic heater never kicked in , it never started although in 2-3 C . The BMS is surely problematic or/and the battery configuration .
If you see other e-cars in the same conditions , the BMS system handles the situation beautifully , and the speed is -20% and not -70% .

Lets see. From my experience with mazda after sales support in Europe , I wouldnt expect any improvements or campaigns or actions in general. Its just too bad! Lets see.

Glad to see others spotted this as well.
To me it seems that BMS limits charging speed for cold battery after few minutes (normal), but with a restart it resets and starts again on max speed. I belive that the already funny low charging speed is to much limited in colder batteries. Would be nice to have it fixed.
You have reported this to Mazda officialy ?

 

[hgv]

Glad to see others spotted this as well.
To me it seems that BMS limits charging speed for cold battery after few minutes (normal), but with a restart it resets and starts again on max speed. I belive that the already funny low charging speed is to much limited in colder batteries. Would be nice to have it fixed.
You have reported this to Mazda officialy ?

I never reporter that issue. I am sure that mazda people know this issue . If they read the forums , or the post in social I am sure they know it. The number of people that have faced this issue must have been hundreds if not thousands. Mostly in Central and North Europe . I live south . It's crazy . 3 C outside temperature is like 50% of the time in Germany or Switzerland or further North. I mean . Hello? Dc charging with 12kw ? It's not sustainable. I don't understand why people keep 🤫 😶. I don't have time read through all mazda forums. But this is insane.

 

[BioTeq]

You don't charge on DC in these temperature simply because you can, you do it because you have to get somewhere far away.
Under current (winter) conditions this car is not suitable for long range travel. Period.
Even in summer it's a massive pain in the butt, but at least doable.

Be happy that we have the cold mode switch - some people complain that it's not doing anything for them - trust me - it is - instead of charging with those measly 8-12kW, you can get a sustained charge of ~20kW. It's still absolutely pathetic, I know... but better than the alternative.
Preconditioning needs to be started hours before and it will eat at your battery, depending on conditions I'd estimate 1-2% per hour... still... it saved my butt a few times.

 

[kevancroft.kc]

You don't charge on DC in these temperature simply because you can, you do it because you have to get somewhere far away.
Under current (winter) conditions this car is not suitable for long range travel. Period.
Even in summer it's a massive pain in the butt, but at least doable.

Be happy that we have the cold mode switch - some people complain that it's not doing anything for them - trust me - it is - instead of charging with those measly 8-12kW, you can get a sustained charge of ~20kW. It's still absolutely pathetic, I know... but better than the alternative.
Preconditioning needs to be started hours before and it will eat at your battery, depending on conditions I'd estimate 1-2% per hour... still... it saved my butt a few times.

Good Morning

Thanks for allowing me the time to look into the points raised with the Mazda MX-30 and I am sorry I missed your call today.

To answer the first question, there are no recurring 12v technical issues that we are aware of, with the MX-30. We can look into this further but would need a technical report raised by the diagnosing Mazda dealership with detailed information so the UK Technical Support team can investigate and advise further.

In relation to DC charging, the resistance changes as the battery state of charge increases, which causes the charge rate to fall due to that change in resistance. Temperature also plays a part as the car is doing everything it can to protect the longevity of the battery. Although we quote 20-80% charge in 36 minutes, this is at an ambient temperature of 20°c and with all other conditions being ideal, i.e. battery temp within the ideal range, etc.

There is a PCM update that allows winter mode to be activated at 5°c rather than -5°c, which would help, as the battery heater will operate earlier helping to warm the battery, but in colder temperatures, Rapid charging will take longer than the 36 minutes at 20°c. If this is something you are interested in, we would ask the local Mazda dealer to raise this with the UK Technical Support Team for instructions.

Please feel free to respond to this email or call me on 03457 484848 if you require any further assistance

 

[yigeyayaer]

2023 World Battery Industry Expo (WBE)
Formerly Asia Battery Sourcing Fair (GBF ASIA)
Date: August 8th-9th (9:00-17:00); August 10th (9:00-13:00)
Venue: China Import & Export Fair Complex, Guangzhou
Website: en.battery-expo.com​

China Produced 324GWh of Lithium Batteries in 2021, up by 106%
Latest date show that in 2021, China’s lithium battery production hit 324GWh (up 106%), registering a output value of 600 billion RMB. The energy density of advanced ternary batteries and lithium iron phosphate batteries has reached an average of 280Wh/kg and 170Wh/kg, respectively, and the battery cycle life of key enterprises has exceeded 5,000 cycles.

Preview of WBE 2023
Hosted by eminent trade bodies like Guangdong Battery Industry Association, Guangdong Lithium Battery Industry Association, Tianjin Battery Industry Association, Zhejiang Storage Battery Industry Association, etc., the 2023 show plans to fill a 100,000 sq.m show floor with1,000 exhibitors.

It has so far attracted many big brands as its exhibitors in the past few years, such as CATL, CALB, BAK, Tianneng Group, TeamGiant, Lishen, Sunwoda, Tinci, XCJ, Aoyou Power, Sinowatt, Cham Battery, Xupai, Great Power, etc.

For overseas visitors who are unable to visit in person, the organizer will also be happy to help you get in touch with our exhibitors!

Review of WBE 2022
WBE 2022 hosted a total of 673 exhibitors (up 20%) on a 55,000 sq.m show floor, counting 47856 visits (up 30%). 316 exhibitors were battery makers, making up 46.9% exhibitor attendance. Featuring a lineup of successful entrepreneurs, the 2022 China New Energy Battery Industry Forum gave everyone insight in the latest policies and trends to together promote industry growth.

Exhibition Scope
Various kinds of batteries
Combined batteries for cellphones, interphones, cordless telephone, laptops, digital cameras, portable DVD, emergency lights, electric toys, UPS, railway locomotives and passenger cars, ships, etc.
Power batteries and management systems for electric tools, electric bicycles, electric vehicles, etc.
Energy storage batteries for wind power generation systems, solar photovoltaic systems and wind-solar hybrid systems, etc.
Power storage application and engineering
Battery materials and accessories
Battery manufacturing equipment and testing devices
Supercapacitor

Co-Located Trade Shows & Live Activities
2023 World Power Supply Expo
2023 Solar PV World Expo (PV Guangzhou)
2023 China New Energy Battery Industry Forum
WBE 2023 Appreciation Dinner

For more info about our event, please don’t hesitate to contact us.

WBE organizing committee
Guangzhou Honest Exhibition Co., Ltd
Guangzhou Innovation Exhibition Co., Ltd
Mobile:13413566118
E-mail：[email protected]
Website:en.battery-expo.com