Featured Toyota to tie up with China's CATL on electric vehicles, with EVs making up half of sales by 2025

Incorrect title, I'm afraid. Half "electrified vehicles" by 2025, not EVs.
And in the post cites "hybrids less than BEVs"? Hmm...quote from the article: The major automaker is expected to achieve its goal of selling over 5.5 million electrified vehicles a year including hybrid models by 2025, five years earlier than the initial target, of which more than 1 million will be EVs or fuel cell vehicles, company officials said.

 

means nothing to us, here in north america. by the time toyota responds, i'll already be driving a bev. and i'm too old for a second one.

 

Me too.

Bob Wilson

 

They never specify but I assume they are talking about Lithium batteries, not NiMH. It's interesting they are switching to cylindrical after using prismatic for all these years. I'm trying to get support from Toyota to keep all of their existing hybrids on the road for longer. Manufacturing new HEV BEV releases a lot of carbon in the present; it takes time (miles driven) to repay the carbon debt. So if you have a Prius with over 100k miles it's already repaid it's carbon debt (i'm still calculating these numbers) if you keep it on the road to 500k then you basically got 5 Prii for the (carbon) cost of 1. This would only be true if you had repaired the car using refurbished parts; realistically it would be 5 Prii for the cost of 1-3. Which basically means if we did this we could double the projected number of HEV on the road. This also creates training and jobs. This is one of the things I'm working on with my nonprofit organization EVA Electric Vehicles for All. I just made a thread about EVA yesterday, please check it out if you're interested.

Anyways, back to Toyota switching to Chinese cylindrical Li cells; I find this very interesting. I'm building a 10kwh LiFePO4 (similar chemistry A123 Lithium Nano Iron Phosphate, a hybrid power-energy cell) ~250v battery pack prototype, designed to replace the NiMH battery in a gen 2 Prius. Install an EV switch, spoof the BECM with block voltages and other data to get it to do exactly what we want; while still having redundancy. I have 2 Hymotion kits, one is in my Gen 2 Prius, i've put about 500 EV miles on it so far and i'm very impressed with it's capability and reliability. The car won't do anything if it knows it's stupid or unsafe. I've tried every scenario I could think of with the kit on to try and make the car freak out, but I haven't succeeded. So I know it's possible to do it. What i'm talking about doing is different; and presents different benefits and challenges. I'll make a thread about it soon.

 

Pictures?

Bob Wilson

 

Sure here's a few. I shot a video too but it's taking forever to upload but I'll put it up once it's done. We traded one Tesla battery modules for these 2 kits, as is condition, been sitting probably since 2014, no manual, all we had was the wiring schematic. My friend Luke knows a lot about this weird stuff (he owns 3 Coda's, will soon have a Via PHEV 2500 work van) so he's the one that got it working. We had to make our own wire harness and tee into existing. If the kit is good, it will charge when plugged in to 110v, even if it's not hooked up to the car. One kit charges, the other doesn't. The one that's working, has some weak cells in it. I only get about 10-15 miles of EV range, when the kit gets to about 50% SOC it turns off. Most likely, a cell block is getting low, so the kit cuts power even though it's still has plenty of juice, it doesn't want to damage good cells. So I need to remove from my car, disassemble both kits, identify weak cells, and replace with good ones, then run through some full cycles @1-2A, finishing each cycle with 2 hours of 100mA-300mA trickle balance charging (I need to find out the mA rate of the Hymotion BMS) When disassembled, we will probably tee in fused leads to each balance lead so we can have our own monitoring system in addition to the existing one. We can't get any data from the RS-232 connector on the kit, it requires their software or scan tool which we do not have at the moment. Fun stuff!

Hymotion Kit by voltech444 posted Sep 20, 2019 at 2:23 PM

EV Switch Gen 2 by voltech444 posted Sep 20, 2019 at 2:23 PM

Hymotion Kit Gen 2 Prius by voltech444 posted Sep 20, 2019 at 2:23 PM