battery temperature management system

Aptera Community Aptera Discussions battery temperature management system

Aptera Community Aptera Discussions battery temperature management system

  • battery temperature management system

  • Elzo Stubbe

    Member
    November 15, 2021 at 1:51 pm

    To get optimal charging conditions the battery pack should be at an optimal temperature especially when charged at high charging levels. Not that I will ever charge at that level but I’m curious. Does the Aptera have some kind of smart battery temperature management system on board to ensure optimal battery performance and charging?

  • Ray Holan

    Moderator
    November 15, 2021 at 2:04 pm

    BMS tech has come a long way since the early days of Lithium packs.

    I’d be stunned if Aptera’s BMS did NOT have provision for working with the pack at different temperatures while charging or discharging. Some of the engineering types on the forum will probably respond to this question with an in-depth answer for you, Elzo.

  • Peter Jorgensen

    Member
    November 15, 2021 at 2:31 pm

    Yes. Unless you have a Nissan Leaf pretty much every EV on the road now has a cooling/heating system for the battery – Aptera included. If it’s on a fast charger the cooling system will cool the battery. If it’s cold out it can warm the battery up.

    If you ever take your aptera on a road trip and fast charge it, you will be charging at max charging levels. It’s very normal.

  • GLENN ZAJIC

    Member
    November 15, 2021 at 4:22 pm

    Do you guys think the cooling system is the same on all battery variants? I am referring to the micro channel tubes they have referred to, and the rest of the systems volume (just not immediately around the batteries).

  • Curtis Cibinel

    Member
    November 15, 2021 at 5:08 pm

    I suspect the cooling system’s ability to dissipate heat while charging is the reason we only have 50 kw DC fast charging. Most EVs have better (ie 150-250 kw) and it would make a great marketing headline along with the crazy 1000 mile range. Very likely the ability without traditional radiators and fans to get rid of the heat is the limiting factor. If it could work without major design sacrifices (ie weight, complexity, expensive) they would love to be able to get 400-500 miles of range (within the 20-80% segment) in 10 minutes; instead its an hour.

    • Raj Giandeep

      Member
      November 15, 2021 at 6:21 pm

      I think 400-500 miles in a hour is pretty stunning.

    • Peter Jorgensen

      Member
      November 16, 2021 at 7:40 am

      I believe you’re right on the temperature management system limiting charge power. Hopefully it can hold 50kw up to 75% (for bigger batteries) which reduces the impact of a lower peak charge rate. I’m guessing the smaller batteries may drop off faster and the bigger batteries may be able to take on more juice faster.

      For reference I have a 67kwh battery and on a DC fast charger at 25 kw the cooling system is pretty much off. At 50 kw I sometimes get cooling. At 78kw (max) the cooling fan is screaming. (2020 Kia Niro EV)

  • Robert Klasson

    Member
    November 15, 2021 at 11:19 pm

    I don’t think even all new EV’s have pre-conditioning of the battery for fast charging. I’ve seen complaints on youtube of Kia EV6:es not getting maximum charge rate from the start, presumably due to cold battery. I know Tesla and Polestar, after a recent update, will heat the battery if necessary before arrival when navigating to a fast charger.

    • Peter Jorgensen

      Member
      November 16, 2021 at 7:41 am

      My Kia Niro EV has a battery heater but it doesn’t turn on until I’m at the charger. It’s really annoying. In cold weather it can add 10-15 minutes to the charge time. Teslas pre-heat before you hit the charger. A manual button to start pre-heat would be really nice.

      Hopefully the EV6 and Ioniq 5 and Genesis GV60 get that straightened out.

      • Joshua Rosen

        Member
        March 13, 2022 at 10:22 am

        Do you have OTA’s on the Niro?

        Not preconditioning the battery is just a matter of bad software that should be easy to fix. Tesla has had preconditioning for years, the other manufacturers are all aware of this and most are trying to implement it. It’s harder for non-Teslas because they need to keep track of multiple charging networks so that they can automatically turn on the heater when you are on the way to a charger. On the other hand there is a simple expedient that could work around an inadequate database, just give the driver a button on the screen that allows them to turn om preconditioning.

  • Oz (It’s Oz, just Oz)

    Member
    March 12, 2022 at 8:39 am

    Spam

  • Harry Parker

    Moderator
    March 15, 2022 at 9:26 am

    Looks like the trash removal system is working again. 🙂

Viewing 1 - 6 of 6 replies

or to reply.

Original Post
0 of 0 posts June 2018
Now