BYD Atto 3 suggestions for software changes

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Опубликовано:

14 окт 2024

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Комментарии : 86

@Sascha-88 Год назад

I hope they hear you!

@Scrap-press Год назад

Bjørn thank you for all your thorough tests. The EV community and future owner greatly appreciate it

@randomdriver Год назад

If BYD cannot figure these simple improvements on their own these I do not believe that they would implement any of suggested changes.

@ziggyyo Год назад

BYD will implement the changes if the responsible manager is made aware and then instructs the software developers.

@MrUled Год назад

They also should put some smoothing on the power reductions to gradually ramp down power if absolutely needed, instead of power being chopped in half over a single degree difference in pack temp. That 1c is totally arbitrary, not as though SUDDENLY at 1c lower it does less or no “damage”

@berdugosocials9854 Год назад

These are excellent insights Björn! As a secondary or third car mainly for grocery runs or school pickup this is quite passable.

@B.O.Z.5 Год назад

Thank you Bjørn. Would be interested, what BYD will make out of it. Hopefully, they‘ll give you feedback on your points.

@alanhold2468 Год назад

The atto 3 is a bit expensive in the UK. 38 to £40k. payments start at £560 a month. £10k more than the MG4. Great stuff Bjorn🙏👊

@gringolife9986 Год назад

that expensive l will stay with my LPG car

@ellenvanderende8912 Год назад

cheaper than in the Netherlands

@silverghini2629 Год назад

As a potential Atto 3 owner I hope BYD take this as positive feedback. I am confused, however, how a senior engineer can sign off this “intelligent cooling” profile. Perhaps it’s because they feel this is the most efficient energy profile and accept the reduction in charging speed (and increased time spent) rather than increasing the cooling at lower temperatures.

@ziggyyo Год назад

Manager to software developer: Please implement an intelligent cooling program until tomorrow. Developer: Print „Intelligent cooling activated“ on infotainment display. Done. Go to coffee break.

@shivan6416 Год назад

The pb for me is : if there is such lack of optimisation for the thermal management, what about all the other component or system of the car ? 😱 Cant trust the quality of the whole car when i see such lack of work on thermal management.

@Smartphonekanalen Год назад

It's very strange that engineers not having figured this out. If they know the specifications of the battery they should build the cooling and software according to it. It shouldn't be any problems with today's big data and AI. It sounds it's necessary to do patching until it can do even better personal tunings depending on habits and environment.

@TheMobilefidelity Год назад

A bit of HI, or human intelligence is needed sometimes. And it's often what is missing in these big organizations, where Herd Behavior is the norm and no one questions anything.

@n37z Год назад

They have figured it out most likely, but usually there are more urgent issues. Lot of testing required to make sure there arent any edge case

@Jyz7fz 3 месяца назад

22:57 AGD Always Go Deep 😂

@brfsa Год назад

I think it should not be hard to calculate the internal resistance of the whole system. With the car scanner you can get power, voltage and currents, and P=R*i^2 And also the voltage drops at high power driving can tell the resistance. I’m going to try soon!

@vonnikon Год назад

Heat pump are by definition always heating and cooling at the same time: A heat pump has two sides, a hot side and a cold side. If you want heat in the cabin and cooling to the battery then that would be no problem to accomplish with a heat pump. If wired properly for this.

@MKTED62 Год назад

let's get you into the factory bjørn... you could help them understand

@chriswhiteman5817 28 дней назад

What is the best brand for battery cooling? Koreans? Love this guy, he is the only guy who analyses EVs scientifically and meticulously. What a legend

Год назад

I got my BYS Dolphin some days ago. I only charged one time at Blúport Hua Hin from 40% to 100%. It charges constant at 35 kW and it took 2 hours, but this was ok for taking lunch and some shopping. I will see next time when I will charge at o lower SoC. I very like the car so far. But also the UI needs some updates.

@Vinalys82 Год назад

Nice choice! The CCS charging at BluPort is limited to 50kW and often delivers less… you may want to try at a PTT like the one between Hua Hin and pranburi or the EleXA at Market Village. Also prefer to charge when your battery is lower, you will get higher speeds usually. You may record data with the car scanner app, quite fun to know what is really going on inside all that machinery!

Год назад

@@Vinalys82 Thank you very much for your information and tipps! I will try the one's at PTT, too. Maybe a will buy a scanner app, but I am not such a nerd. Blúport is very convenient while shopping and dining. It is inside and has 4 stalls. EleXA at Market Village is outside and there are only 2 places. Normally I will charge at home but I wanted to test that charging option at Blúport.

@MichaelEricMenk Год назад

Regarding heating while charging. A OK feature for many cars wold be - If SOC below 70%, prioritize battery cooling. - If SOC above 70%, prioritize cabin heating/cooling. This will be a nice default for people charging to 80%.. And have the possibility to override..

@francisdansoagyare9264 Год назад

Best EV recommendation for very hot climates (Ghana, West Africa)? Bjorn, thank you for your amazing youtube videos. I have learned so much about EVs from you. You did a recent video about battery charging issues (preheating affecting charging speed, drive train, etc) with the BYD and KIA cars. This battery preheating issue in the cold made me wonder about similar issues at the other extreme, i.e. heat. Based on your videos, I know to avoid any BEV cars without a thermal management system for the batteries. ASK: Based on your vast EV testing experience, what is the best EV for hot climates? Thank you in advance. Francis from Manchester, NH USA.

@ท่องเที่ยวทั่วโลก-ฑ2ฑ Год назад

Björn want to see visiting those Car Manufactor to have a serious Business talk on all Numbers😂. We are all waiting for the Response from the Industrie 😂

@ziggyyo Год назад

Maybe the design target was to minimize consumption and maximize range. Proposal for BYD software developers (simplified): .IF. navigation destination is a fast charging station .AND. destination is within battery SoC reach .THEN. activate battery conditioning;; .IF. outside temperature is HIGH .THEN. activate AC cooling for battery pack

@bridicot Год назад

BYD has recently unveiled a fresh BEV called the Song L (which might sport a different name if it steps beyond China) at the Chengdu Auto Show 2023. It's notably more appealing than the Atto 3 - boasting a sleeker, more aerodynamic design accompanied by an array of innovative features. However, considering the Atto 3's already elevated price in Europe due to production limitations in China, it's reasonable to assume that the pricing of this new BEV won't undergo as significant an increase when it becomes available in EU markets. This notion aligns with BYD's apparent strategy of bolstering production capacity first in China, South Asia, and Australia before embarking further into the European market.

@romsa1977 Год назад

Maybe we will see some optimisation of charging, i seen lots of video from Yuan Plus drivers that shocked from charging speed - official DC charging speed in China also 80kw, but now drivers in China see 106 kw !!! BYD cells can accept 1.5C charge at 23 degrees (but this an unoficial data from internet)

@raidene1800 Год назад

Ive also seen those videos as well. it seems to me that Atto 3's software is falling behind that of Yuan Plus, maybe the problems issued by Bjorn have already been optimized in the Chinese software. Lets hope that it makes its way to the overseas, since it would make the Atto 3 to another car

@vonnikon Год назад

Thermal management for the battery should use a PID control loop. That alone would solve many of your concerns.

@s.kxx1956 Год назад

To be honest bjorn, I think your suggestions are beyond byd’s engineering, look at their software. It will go In one ear and out the other

@bertiloleandersson927 Год назад

Thanks for very good videos. About the letter you sent. Do you have the epost adress to BYD, like to ad some changes. Hope you make more Atto3 videos. Perhaps about the batteries calculation that happens now and then during the last % of charging. Mvh Bertil

@romsa1977 Год назад

Thanks Bjorn, in addition i found that after number of DC charging Atto 3 battery cells drifts, because of that when battery at low SOC this affects usable battery capacity and also not allows fully charge battery because some cells come to voltage 3.76v (there BMS stopps charging) but most of cells only reach 3.4 v, using A/C charging not fixing delta of 0.35v at least when Atto 3 charged with 7kw or 11kw, i seen that delta is better after using only granny charger 1.5-4 kw, then in car scanner cells voltage alligned more or less at the end of charging session and delta not so high now - 0.25v, why BMS allows to LFP cells go as low as 2v and as high as 3.76v ? , does this good for LFP cells ? Anywhere i can read about LFP its 2.5 to 3.65v less then 2.5v will cause degradation higer then 3.65 also not good.

@Crunch77 Год назад

I'm considering the BYD Seal. Could this issue also affect the Seal?

@visualcron9005 10 месяцев назад

It is unclear but the Seal has a faster general charging speed so it may not matter that much.

@gopakumarsudhir4766 Год назад

Heat pumps move heat from one place to another. hence the name heatpumps. When one end of the heat pump heats up, the other end cools down. In other words it is transferring heat. Therefore it sboud be possible to heat the battery while cooling the cabin or share the heating or colliding between the cabin and the battery. It may need an auxiliary method for transferring the warmth / cooling to provide simultaneously heating and cooling.

@ziggyyo Год назад

You would need an Octovalve 😊

@joanllorente7589 Год назад

Interesting. Which email are you sending this info? I trying to communicate with them to translate the system on my language, but I'm stuck ...

@MimMusMet Год назад

Ok, BYD like cooler weather. What is the EV model which like higher temparature avarage?

@glenandersson1114 Год назад

Byd Oceania are responsive with ota updates, I hope they take your advice and ramp cooling immediately on charging

@dowphotography 11 месяцев назад

Out of curiosity wouldn’t any updates for a BYD model be the same across the world for that specific model?

@Ahvenmeister Год назад

Did you test the comfort line or design line? From what i can tell the comfort doesnt have heatpump?

@Alberto-mq7gw Год назад

If I'm not mistaken, a heat pump takes the heat from one place and moves it to another place. For example, if you have a fridge, it will take the heat from inside the fridge and release it to the room where the fridge is (just see how much heat can come out from behind a hotel room fridge that is tightly enclosed). So I don't understand why when you are heating the cabin while charging it wouldn't be able to get the heat from the battery and into the cabin. That way it would be most efficient and serve both purposes at once (cool the battery and heat the cabin). It would be different if you were charging during the hot day and you wanted to cool the cabin while charging. Then it would have a harder time getting the heat from both the cabin and the battery and releasing it to the outside (which is also hot). Regardless, yes, I agree that a smarter logic in the programming could easily improve certain situations as the one you faced, without changes to the engineering of the whole system to be more flexible about where it can take the heat from and where it can release it.

@Tomaskom Год назад

Precooling the battery might not be necessary if the cooling would run at full power during charging from the very start (if the temperature is high enough to warrant it, say above 30-35°C). Targeting 30°C during driving would help too, but it feels like the delayed cooling when charging is responsible for the problem the most.

@bjornnyland Год назад

Even when cooling is running at 4 kW, the battery still overheats.

@Tomaskom Год назад

@@bjornnyland Which is crazy. My e-208 is able to keep temperatures in check, below 35°C, with 3-4kW cooling (and after disconnecting, will drop the temperature by several degrees in just a few minutes). If cooling ran immediately in the BYD cars, it would at least slow down the temp rise, so rapidgate would happen later, possibly delaying it enough that natural power decrease would step in first. If the starting temp was closer to 30°C, I think that would be enough.

@romsa1977 Год назад

Better to keep pack cool all time car powered on and cells temperature reach 30 degrees then when car starting chartging request additional 4 kw output from dc charging station to power heatpump at maximum rate and charge battery at maximum possible speed, when it already at 46 degrees outside of cell core of cell reach 50 degrees at this time probably.

@yhfsywfit Год назад

Great info, super interesting

@decimal1815 Год назад

Sounds like cars need dedicated liquid cooling systems for battery packs, at least. Heating might be another matter.

@fiewu34hiuf Год назад

Byd Act 3 has been on sale since February 2022 and they still haven't managed to get it to recharge at a decent speed. In contrast, the Byd Blade Batteries fitted to European built Tesla Model Y charge very fast. Are Byd's engineers so technologically behind? Or did they want to economize too much on components?

@shivan6416 Год назад

You have the answer.

@user-vu4tf3eb9l Год назад

So this car wouldn't charge in the heat of greece, spain or italy

@mishka5152 Год назад

I have experience with BYD Han in southern Europe and in winter in Norway. It is the other way around. Because in the summer, AC is used both to cool the battery and the passenger compartment. It is cooling the battery at the same time as it is supposed to heat the passenger compartment that is the problem. Therefore rapidgates actually BYD less in summer than in winter.

@user-vu4tf3eb9l Год назад

@@mishka5152 Thanks for your experience

@rohankilby4499 Год назад

Over the last year I’ve driven this car many times in 35 Celsius ambient on 1000 plus kilometre trips in Australia, I’ve found it charges fine on our 50 kWh baseline infrastructure. I always shut the car down and leave it to charge then go and have a walk, a beer or coffee and let the AVAC sort the battery cooling I haven’t had an issue So far however my access to 100 kWh and above chargers limited at present.😁👍

@mishka5152 Год назад

The problem occurs in e.g. 5 degrees below zero where you have to stay in the car because its cold outside and you are in the middle of nowhere and the car rapidgates because of bad cooling of the battery.@@rohankilby4499

@raviteza8 Год назад

What I don't understand is none of them have figured out heat scavenging till now, except Tesla. If the battery is hot and you need cabin to be heated...? Ring any bells how to do that? Run a bloody loop between battery, heat pump and cabin and bypass the damn radiator. Two birds with one stone.🤦

@jasonw98 Год назад

Hyundai do

@romsa1977 Год назад

European Atto 3 this days receiving OTA 1.4 update that promises longer time charging at peak DC charging speed !!!

@jackmac919 Год назад

Hopefully these don't catch fire, would be a great setback for Chinese cars going into the international market.

@ChaimLoecher Год назад

Well explained - free knowledge - pric€l€$$.

@decimal1815 Год назад

An alternative perspective on this is that cheap cars need cheap battery management solutions. Leaf had the cheapest solution: just regulate charge speed. That doesn't seem so crazy, so long as buyers can accept longer charging times for the benefit of an inexpensive EV. Also, it needs to be enough to protect the health of the battery pack to an accessible level.

@bjornnyland Год назад

MG ZS EV and MG4 are also cheap but they don't have battery overheating problems.

@fiewu34hiuf Год назад

In Europe Byd Atto 3 is positioned as a luxury car, it costs like the Tesla Model 3, the list price is around 42,000 euros

@decimal1815 Год назад

@@fiewu34hiuf I've been surprised at the UK price too. £32k. Seems like that's rather optimistic..

@decimal1815 Год назад

@@bjornnyland good point. I need to watch your MG videos to educate myself. 👍

@tridrean Год назад

❤❤❤

@jovceata Год назад

Korean siesta 🤣

@angelcorp0 Год назад

im really sorry to say, but this is shortsighted. these preferences are for one single use case: long range travel (with heavy fast charging) focusing on the possible shortest time. that is your drive style. not the everyday most people use the car like this style. pretty sure the Chinese engineers are not stupid, they just optimized the systems to be more energy efficient, suitable for the more common everyday usage.

@bjornnyland Год назад

I don't think you understand much at all. If outside temperature is 25-30 degrees, you will overheat the battery even if you're not on a long trip.

@angelcorp0 Год назад

@bjornnyland lets just agree that we disagree. i use my car less than 20km per day. in my case it will not overheat.

@berdugosocials9854 Год назад

Björn, your aperture is wide open, new camera? Your hands are getting blurred

@bjornnyland Год назад

"New" camera I bought 3-4 years ago. Canon 6D Mark II with Sigma f1.4. I think I used f2.8 on that shot.

@chestodor4161 Год назад

Seems like most Chinese cars will age like a Leaf.

@adrianguggisberg3656 Год назад

So much love for an EV that's equally meh and overpriced as an ID3 from the biggest EV manufacturer in the world? Shouldn't they be able to figure it out themselves? But then constant mockery for some other cars/brands that can actually match or surpass Tesla in many ways and even at reasonable-ish prices. I still like and watch this channel for its humor and unmatched accurate and complete information, but the the growing impression of a hidden agenda kinda sours it for me.

@jasonw98 Год назад

At 80kW charging without throttling this BYD doesn't stand a chance against any Volvo or geely product