04-15-2014, 02:29 PM | #11 | ||
Senior Member
Join Date: Dec 2005
Location: Lee's Summit, MO, USA
Posts: 1,217
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Quote:
Quote:
Don, if you would like to arrange a short "road trip" to Lee's Summit, Missouri, in a couple of weeks, I would be happy to personally help you diagnose the X2 (swap batteries, you ride one of mine, etc. etc.). Just send a PM. |
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04-15-2014, 04:02 PM | #12 |
New Member
Join Date: Sep 2011
Location: Austria
Posts: 10
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Hello (I am from Austria)
Would like to imagine also like my software It consists of a special charger and a current sink. All data is evaluated with the PC. http://www.pukshofer.com/Firma/downl...Erklaerung.pdf Unfortunately I am too far away... but you can see a small part of what I do... excuse my bad English :-( best regards Roberto my FB: https://www.facebook.com/Pukshofer Home: www.pukshofer.com/ Last edited by Roberto; 04-15-2014 at 04:15 PM.. |
04-15-2014, 07:43 PM | #13 |
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Join Date: May 2007
Location: San Jose, CA - USA
Posts: 1,314
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^ +1
Very nice. There is a member here "Dr. Marty" I have not heard from in years that had equipment much like you have there. I sure wish you lived next door jeff
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04-15-2014, 07:46 PM | #14 | |
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Join Date: May 2007
Location: San Jose, CA - USA
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Quote:
I sure wish someone that likes working on this stuff would move to Silicon Valley!!! Hint Hint!!! jeff
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04-15-2014, 09:58 PM | #15 | |
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Join Date: Aug 2008
Location: Marin County, CA
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Quote:
The best way to think of resistance in this context is dE/dI (E = voltage, I = current, for those unfamiliar with the notation. That is, how much voltage changes with a change in current). This is not a constant value. The bottom line is that the current a battery can output is limited by the rate of the chemical reaction, which generally involves diffusion processes of some sort. At low load, they act more like a voltage source; at high load, more like a current source. I'm not disagreeing with anyone here; just trying to relate the various views of the situation. It's also important to remember the electrical behavior of motors: the voltage across an ideal motor will be proportional to the speed, while the current will be proportional to the torque. You can easily derive this from the basic observations that power in = power out (conservation of energy), and that the torque of a motor is produced by magnetic fields, which are proportional to current. (The latter eliminates the possibility that it's the other way around). It's tax day, so I'll leave the derivation as an exercise to the reader... Real motors introduce more complexities, of course, but at a high level, this has to be true of all types of motors. So the current limitations of a battery limit the torque available, while the voltage drop limits how many RPMs you can get at that torque.
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Bob Kerns: To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. , To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. Obviously, we can't have infinite voltage, or the universe would tear itself to shreds, and we wouldn't be discussing Segways. |
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04-17-2014, 07:45 AM | #16 |
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Join Date: Sep 2012
Location: Taiwan
Posts: 195
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Yes it does work with all versions of stock Segway Valence BMS (AC-AH),
the example picture provided is version AF. Also a male to female extention connector with data and power output bypass to plug into our off board fast charger so we can monitor the individual cell performance during fast charging cycle. Thank you Bob for a simple battery and motor physics overview, you have explain it so beautifully and absolutely correct in a very easy to understand fashion. Last edited by Amimoto; 04-17-2014 at 07:53 AM.. |
04-17-2014, 06:13 PM | #17 |
Glides a lot, talks more...
Join Date: Jan 2004
Location: Pelham, NH, USA.
Posts: 10,356
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I love your 'T' connector.
I have often thought of a connector of that sort to allow two batteries (actually 4) to be in parallel, and therefore doubling the range of the segway... I first thought of this long ago with NiMH batteries, but the concept remains valid, in that you glide with one set in the normal place, and the partner set in a bag on the segway. I believe the extra range will more than compensate for the extra weight. I thought that since the management of the battery itself is internal, then segway might not need much if any modifications... Maybe even this setup could be made to work with 4 NiMH batteries instead of two LiIons, allowing for a greater range, or even an alternative to LiIons on 2nd gen machines...
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Karl Ian Sagal To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. "Well done is better than well said." (Ben Franklin) Bene factum melior bene dictum Proud past President of SEG America and member of the First Premier Segway Enthusiasts Group and subsequent ones as well. |
05-02-2014, 01:08 AM | #18 |
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Join Date: Mar 2013
Location: tunisia
Posts: 5
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Problem battery
I have an error code C108 with a red battery light.
After switching position of the battery (front to back,back to front) error code is C100. The voltage of the two batteries is 70v How I can repair it. Thank you for your help |
05-02-2014, 01:26 AM | #19 |
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Join Date: Sep 2012
Location: Taiwan
Posts: 195
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When you plug your Segway to recharge, the rear battery's (you swap battery already) charging indicator LED shows red? If so, you need to contact MTO to revive the battery ASAP.
You state that the both voltage is 70v but your error code indicates C108 - CUB detect front battery empty and after battery swap C100 - CUA detect rear battery empty, it looks like one of your battery is malfunction and the problem battery shouldn't show 70v, if so, the battery's BMS is sending out wrong signal, as the code is already stated above. sent from my iPhone using Tapatalk APP |
05-02-2014, 01:33 AM | #20 |
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Join Date: Sep 2012
Location: Taiwan
Posts: 195
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BTW, It's MTO battery, not Ministry of Transportation,
google them and Jason will help you to revive the battery, revival will work if the process is actioned in time and damages to the cells are not yet permanent. Otherwise rebuild of new cells are recommended. sent from my iPhone using Tapatalk APP |
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