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Electric golf carts Harley Davidson, Melex, Pargo, Taylor-Dunn and other Misc. Carts. |
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10-25-2018, 01:12 PM | #51 | |
Gone Wild
Join Date: Oct 2012
Location: Southwestern Pa.
Posts: 6,215
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Re: Is our Series Cart a practical application for Lithium Batteries?
Quote:
Right now the 4865 settings are as follows: 2 minuet rating: 650A 5 minuet rating: 400A i hour rating: 250A Remember......speed is NOT the objective of my cart. Just get me there and get me back. |
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10-25-2018, 01:32 PM | #52 | |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Is our Series Cart a practical application for Lithium Batteries?
Quote:
https://batteryuniversity.com/learn/...of_lithium_ion |
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10-25-2018, 01:48 PM | #53 | |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Is our Series Cart a practical application for Lithium Batteries?
Quote:
The new controllers give you separate settings so that You can allow full power to the motor (under certain throttle conditions) while regulating the maximum amps drawn from the batteries. Actually if You look at the specs JohnnieB posted in #26, he left off a very important part just 1/2" below that table: https://alltraxinc.com/wp-content/up...-B_SPEC-SR.pdfThe output torque and speed on the old controller were tied meaning 100% torque happened at the 100% set speed. You can now set your 30% throttle to deliver 100% torque and 25% speed which would more closely relate to the speed that is likely to need that much torque. |
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10-25-2018, 01:57 PM | #54 | |
Gone Wild
Join Date: Oct 2012
Location: Southwestern Pa.
Posts: 6,215
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Re: Is our Series Cart a practical application for Lithium Batteries?
Quote:
Keep in mind that I cut off the second part of ag4ever's post because that section was referring to another member's Lith batteries from a different source. Dave |
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10-26-2018, 09:09 AM | #55 |
Gone Wild
Join Date: Oct 2012
Location: Southwestern Pa.
Posts: 6,215
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Re: Is our Series Cart a practical application for Lithium Batteries?
BTW & FWIW, I sent the following email to Alltrax as I was somewhat perplexed as to why I had to keep power on (peddle depressed) in order for the software to "see" the controller.
Here's the email: Ron, First of all, thanks for the link. I loaded the software and drivers and can now obtain the information I want\need from my Alltrax 4865 650amp, However, (there’s always a “but” in there) when I hook up the controller, my laptop (Windows 7) will not “see” or recognize the controller until the controller has power to it. (IE….I step on the throttle.) So, to get my readings I kept the peddle pushed just enough to supply power when I was going down hill. So, is there a reason for this or is this the normal protocol? BTW, if I take my foot off the pedal completely, the software gives me the message that the controller is not recognized (or some message to that effect) and I lose any ability to collect data unless I hit the refresh button on the software….and only if power is provided to the controller. |
10-26-2018, 10:41 AM | #56 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Is our Series Cart a practical application for Lithium Batteries?
The AXE controller is only powered up when there is B+ on Pin-1 and Pin-1 only has B+ on it when pedal switch is closed. The pedal switch actually forwards the B+ to one of the small terminals (Coil) on the solenoid and the wire from Pin-1 is attached to the same solenoid small terminal.
A workaround to get the AXE to stay powered up and recording data when you take your foot off the pedal would be to disconnect the red wire from Pin-1 to the solenoid small terminal with two red wires on it and then connect it to the B+ at the battery pack or some convenient spot with B+ 100% of the time, so the controller stayed on 100% of the time. The solenoid would still be operated by the pedal switch, so cart safety wouldn't be compromised much, but I would disconnect the wire on Pin-1 from B+ after the data recording trip. The latest generation of Alltrax controllers are powered up by the USB connection and stay on as long as the computer is attached, solving that issue. ------------ The attached zipped .csv file separates "Date" "Time" and "Throttle pos" headers and columns and adds Min, Avg and Max functions to each data column. I sorted by OC and deleted the lines with 0A output (costing with foot on pedal) and the sorted by Date and Time to get back in the original sequence, to get a better picture of min and max OC and BC and battery voltage under load. |
10-26-2018, 10:55 AM | #57 | |
Gone Wild
Join Date: Oct 2012
Location: Southwestern Pa.
Posts: 6,215
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Re: Is our Series Cart a practical application for Lithium Batteries?
Quote:
BTW, I compared your min\max\avg to mine and they are essentially the same. Maybe not for a statistician, but ok for me. Thanks!! |
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10-26-2018, 11:52 AM | #58 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Is our Series Cart a practical application for Lithium Batteries?
Quote:
I use Quattro Pro these days, but neither it nor Excel will parse information when the delimiter changes between header and body or within the body like they do in the .csv files recorded by the AXE and DCX families of controllers. I use an ASCII text editor to straighten that mess out, then import into a spreadsheet and add the mins.avg and max formulae |
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10-26-2018, 01:39 PM | #59 |
Gone Wild
Join Date: Oct 2012
Location: Southwestern Pa.
Posts: 6,215
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Re: Is our Series Cart a practical application for Lithium Batteries?
I went to my spreadsheet and see that for some reason, when I copied/pasted, your numbers were formatted to 1 decimal place. Mine were 0. Hence the difference was rounding.
Excel use to parse info on a "convert". Maybe they ditched that option......dunno why......but back in the day I used it many times. |
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lithium, series motor |
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