Відео

Good call on keeping them intact. I definitely wouldn't do it this way a second time

@Brendon_M can you do something for me? I need to pick up the batteries. And i wonder how big the holes are on the side of the batteries where they are attached to the car. When i pick then up i need a metal bar to stick trough it. :) and i dont know the size of the hole. Would be great. I need to stack them with some wood between those two lips on the side with holes. Cannot stack them on top. The too is very frigile.

Seems to go soft around 50°C too.

I bought a wrecked ATTO3 from the auctions. Realistically I probably overpaid but by the time I had it delivered to my door it cost me $11000.

Auto electrician but I've recently moved into a training role

Please don't listen to disinformation about EVs.

Not having a go at you. What you have shown is very interesting. To which part are you referring to ? It's a fact EV's simply don't have enough range at the current technology level. Most of them get way less than stated. I hired one out in the Uk and witnessed this first hand. In Australia, range plays a big part. EV's make the most sense in the city or short trips, but you are still in the same traffic jam looking for the same parking spot... so decent public transport or an electric bike or motorcycle makes more sense. I'm in the boat business, and many insurance companies do not like Li Ion batteries as house bank batteries in boats. In fact, most owners are buying Agm batteries when it's time to replace or upgrade. Our electricity supply, in Australia, comes mainly from coal power stations, which is not what one would call green, is it ? The size of the EV batteries, as you have well demonstrated, is such that a domestic house 15Amp plug isn't really up to the task. There are currently not enough fast chargers. One car test in the UK tested an old petrol Bmw vs the new Bmw Ev equivalent on a 3 hour drive and to my surprise the cost to recharge was a bit higher than filling up the petrol car. In the Uk unleaded fuel is almost $3 per litre. So in other words, EV's are getting more expensive to charge. Factor in the cost of a new one makes it an expensive exercise, not to mention the time and effort taken to recharge. Unfortunately EV's are not efficient enough at this time. That's the current reality

Sorry for the essay, but I got a bit carried away.... I was mostly referring to the fire stuff but first. Range is fine at the current technology level (except for towing) what we have a problem with is a lack of infrastructure. If there was a DC fast charger for every fuel Bowser there wouldn't be a problem. Remember you can leave every morning with a "full tank"so you only need to use public infrastructure if you travel more than 300km in a day which is very few people. Yes there are outliers that mean an EV won't work for everyone. But buy a car fit for purpose. People aren't buying a Yaris to cross the nullabor and there shouldn't be buying a F250 to drive to work in the city. With the current technology plug in hybrids will work fantastic for regional Australia. All the round town driving is low emissions but the range is still there for the long haul. Unfortunately the current PHEVs are a bit crap (low range, bad battery degradation, low tow ratings) and a lot of the world is pushing past the hybrid phase and straight to EVs so not enough models are coming out. There is the problem of people who don't have off street parking but those same people tend to not drive long distance so a DC fast charger experience similar to filling up at the bowser will work for those who can't gain access to power at their car while they sleep, lastest technology recharge times are below 20min (if you can find a fast enough charger) and there are plenty of sub 10min prototypes being tested. The thing about a transition is that they are never smooth or instant, things need to be done for change to happen. We have plenty of power, in fact when you move away from fossil fuels you use less energy because you no longer need to pump, process and transport the fuel (not including ICE is only about 30% efficient once you get the fuel to your car). There are certainly problems with local connections not having enough power especially in regional areas but the grid as a whole has plenty of energy, especially if V2G technology is implemented to spread the evening peaks out, though I'm unconvinced V2G will work on a massive scale as only enthusiastic people will implement it and unless it is heavily incentivised the masses won't bother. That all being said I agree 100% that decent public transport and electric bikes /scooters should be invested in as priority. EVs (and autonomous cars) don't fix traffic problems. Costs of DC charging are high due to the massive costs of the infrastructure rollout so that BMW trip makes sense. You pay a premium for faster charging but the money you save the rest of the time makes up for that, though once again buy a car fit for purpose. If you are going to be relying on DC ultra fast chargers every week then don't buy an EV to save money (hell, buying any new car to save money is a dumb idea). The complaint about EVs not being green is also silly. Even if they are fully powered by coal they emit less CO2 over the life of the vehicle (not to mention all the other various exhaust gases). And as a bonus what does get pumped into the atmosphere is happening away from where I, and more importantly, my kids breath. If you take 20L of fuel and pour 10L into a car and 10L into a genset and charge an EV, the EV will get further. That's why hybrids are so efficient, they are just an EV with a genset. Now add on the increasing amount of solar and wind generation and the fact it's energy Australia can create at home without being reliant on the world stage or market prices and it seems like a no brainer. All that waffle aside, the fire comment is what got my back up. EVs are generally safer in an accident and significantly less likely to catch on fire. The big ranger is once the fire is going you can't put it out which especially on a boat is a bad thing. Insurance companies are scared of lithium batteries mostly because of poor quality BMSs and lack of safety systems in cheaper systems/ batteries. EVs have much higher quality BMSs that actually look after the lithium cells and shut down/warn people when there is an issue. Having a cheap BMS is like having no fuel tank. Imagine 2 boats, one with a proper fuel tank that you fill up, put the cap on and then use a fuel pump to send the fuel to the motor and the other boat has no fuel tank, you just fill up the bilge and let it slosh around until you need it, when you grab a bucket and scoop some up to pour into the in top of the motor. Both boats are at risk of fire due to the fuel, but one is much more likely to burn down. Does that mean we shouldn't use fuel in the boat with a fuel tank? Now throw in the fact that the Atto battery is LFP chemistry which is known to be even more stable than other Li ion types. I'm not saying EVs are our Lord and Savior but there is a lot of FUD out there from vested interests

I do have the specs somewhere but from memory I think it's around 400-450kg

@@Brendon_M Thanks

Why not?

The car it came from was written off in an accident and couldn't be legally repaired

Yeah it's a bit sad. Good for reliability, bad for repairability...

Yes, it's a plastic cover that is bolted down. There are metal (aluminum) bits of flat bar that go around the edges that clamp the plastic down onto a gasket. There is a gasketed bolt on top, that when I loosened, allowed the air pressure to equalise because the battery seems to be airtight so I don't think water will be a problem

@Brendon_M thanks for the info!

Just bolted in underneath, certainly would help with structure but it's not structural

SOC is reported to the goodwe by the BMS and the separate MPPT is before the current sensing shunt so the BMS sees all power in and out of the battery

@Brendon_M Have you communication RS485/CAN between Inverter&Battery?

Yes, CAN. The ZEVA BMS is compatible with any solar inverter that can talk with the same protocol that SMA uses (which seems to be most)

@Brendon_M good, sir

It was mostly brute force and ignorance

EVs almost never burn- ICE cars are DRAMATICALLY more likely to burn.

Yep, seems all manufacturers are heading this way unfortunately. Better for reliability but terrible for repairability

I'm not sure. I want to pull one apart but I haven't had a chance yet

No cooling/heating and so far I don't think I need it. It would be nice to have but overkill. The thermal mass of the battery seems to be more than enough to keep the temps in check. The most I ever pull out or put in to the battery is 5kW and it's designed for over 150kW. Ambient heat in the middle of summer pushes the temp up but is in a coolish area of my house and hasn't been a problem. If I get a string of hot days I might put a fan on it if the temps get to high. I have actually had some over heating in the inverter, it only has some cooling fins and pushing 5kW continuously for hours on end causes it to overheat and de-rate. I installed a fan and that seemed to cure that issue. No regulatory issues other than the inverter had to be less than 5kW (I'm on single phase), as long as the sparky was happy and he didn't seem to care

@@Brendon_M thanks for taking the time to reply. I am in Qld on the Southeast Darling Downs, summer is hot. My system is currently at 30 kW of solar panels and delivers 3 phase. I intend to use the battery, as is, paired with a Goodwe ET series hybrid inverter and all going well connect a second battery in parallel. I am powering a recirculation aquaculture project. It draws about 6-7kW, 24 hours per day. I will go to the trouble of connecting the liquid cooling system to a radiator and fan. I will let you know how it goes. regards Bill K

The battery isn't liquid cooled. It's a refrigerant loop. You might be able to push coolant through the channels but they are very small. If you are using the battery as a whole (good choice btw) then, if you haven't already, have a look at Dala's EV repair UA-cam channel.

@@Brendon_M Interesting, the vehicle I dismantled was so extensively damaged in the front end it was impossible to follow all the coolant lines. I have been unable to find a workshop manual for this vehicle, were you able to access one? I have seen some of Dala's videos, I will have another look. thx Bill K

There're some BYD manuals available on GitHub but they are all in Chinese that's all I've seen available

Jealous drinking Russian vodka helps a lot especially when you get home.

No channels unfortunately. The only cooling is through the refrigerant chiller plate that sits on top of the cells

Have you not seen real car fires? Sure, they don't explode like in the movies, but they certainly burn. The fire after the break is more like a normal car fire with all the plastics and interior going up along with the airbags going off

Best bet would be Dala's EV repairs on UA-cam. Not sure if they have cracked the BYD pack yet but they are working in it on the GitHub (dalathegreat)

Many thanks 👍

I agree but that's not an EV thing, It's a new car thing.

​@@Brendon_Mjust asking, do you think that we have similar costs to replace an ev battery VS an ICE engine? Thanks for the video.

I think the costs aren't too different. But it definitely depends on the models

100%

Wrong. Recycling them is relatively easy. It’s already happening- and is much more cost effective than mining new minerals.

Not easily. It's all glued and welded in

@@Brendon_M I understand you, it’s hard but not impossible yes ?

Nothing is impossible but I think you will damage some of the cells getting them out.