Battery selection for the hybrid motorcyle

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Discussion Overview

The discussion revolves around the selection of a battery for a hybrid motorcycle project. Participants explore various input parameters and considerations that influence battery choice, including performance specifications, design requirements, and types of batteries suitable for hybrid applications.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • Some participants suggest that performance specifications such as acceleration, range, and carrying capacity are critical for selecting a battery.
  • Others argue that without specific performance requirements, the choice of battery becomes arbitrary, with one participant humorously suggesting a AA battery.
  • There is a discussion about whether the hybrid motorcycle will use an inverter or operate on direct current (DC).
  • Some participants emphasize the importance of defining the project scope and feasibility before selecting a battery, suggesting that the design should start with fundamental parameters.
  • One participant recommends Lithium Iron Phosphate batteries for their safety and charging speed, while another mentions the potential use of nickel metal hydride batteries.
  • There is a suggestion to consider lead acid AGM batteries for cost-effectiveness, highlighting their compactness and high amp charge capability.

Areas of Agreement / Disagreement

Participants express differing views on the importance of defining performance specifications before selecting a battery. Some focus on the hybrid aspect of the motorcycle, while others emphasize the need for a broader design approach that includes considerations like tires and overall feasibility. The discussion remains unresolved regarding the best approach to battery selection given the lack of specific project parameters.

Contextual Notes

Participants note the need for a feasibility study and realistic project scope, indicating that the discussion may be limited by the OP's lack of defined specifications and the complexity of hybrid systems.

sherazi21st
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hi all,
I'm designing a hybrid motorcycle and want to select a battery for that. Can anyone tell me what will be the input parameter for the selection of the battery the motorcycle?
 
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what kind of performance do you want from the bike (acceleration, range, carrying capacity, etc)
 
I don't have any specific performance specs. This is final year project of BS. You can assume any specs. My project is to design a hybrid motorcycle with any specs.
 
sherazi21st said:
I don't have any specific performance specs. This is final year project of BS. You can assume any specs. My project is to design a hybrid motorcycle with any specs.

no specs?
then use a AA battery. cheap & readily available!
and it fits in with all the other requirements you have!
 
Would this hybrid be using an inverter or will it be DC?
 
ok, serious answer: you need more design specs- think about what you want your motorcycle to do!
I'm a member of an automotive design club (FSAE) at my school, and we had someone come in and talk to us about design. He said to pick our tires, and work around them- so once you have acceleration/handling specs figured out, you can pick tires that can handle them, and design your engine/frame/etc. around that.
From that point, you can start thinking about more in-depth features, such as what battery you need
 
I'm pretty sure that the "hybrid" part is the main focus.
 
HowlerMonkey said:
I'm pretty sure that the "hybrid" part is the main focus.

why do you say that?
the "hybrid part" (whatever that may mean) isn't what's going to be in contact with the road. A battery can't prevent a skid.

"Engineers, in the fulfillment of their professional duties, shall hold paramount the safety, health, and welfare of the public."

or did you forget your engineering ethics?
 
  • #10
He's asking about hybrid batteries and you discuss tires?

Maybe I can author a thread about PRTs on a 3350 radial and you can suggest I need to get the landing gear doors sorted out before I pick my engine.
 
  • #11
HowlerMonkey said:
He's asking about hybrid batteries and you discuss tires?

Maybe I can author a thread about PRTs on a 3350 radial and you can suggest I need to get the landing gear doors sorted out before I pick my engine.

OP was tasked with developing a motorcycle that is hybrid. He has no other specs. Designing around tires is prudent, because they are in contact with the road, and are directly responsible for acceleration/handling etc.
 
  • #12
He asked about the hybrid battery.
 
  • #13
HowlerMonkey said:
He asked about the hybrid battery.

And in subsequent posts, OP made it clear that his project wasn't to select a battery, but rather to "design a hybrid motorcycle with any specs."
 
  • #14
Go with Lithium Iron Phosphate batteries, as they're the only ones that won't explode from impacts amongst the secondary battery types with the best capacities. They also retain their capacity a lot longer than other lithium batteries and charge 10 times faster. This enables you to take a charger with you to re-charge in 10-20 minutes if needed for extremely long trips, compared to the hour+ charge of other lithium types.
 
  • #15
jehan60188 said:
And in subsequent posts, OP made it clear that his project wasn't to select a battery, but rather to "design a hybrid motorcycle with any specs."

It is you who guided the topic toward tires from his original post.

Scroll up.
 
  • #16
I guided the topic towards an engineering solution. "Teach a man to fish..."
That being said, your shortsightedness in engineering is humorous and frightening. You lack the capacity to think beyond anything besides a bandage solution, and I hope for the sake of humanity you aren't on any important projects.
You can continue trolling in this topic, howler, but I've got better things to do.
Live long, and prosper.
 
  • #17
jehan60188 said:
OP was tasked with developing a motorcycle that is hybrid. He has no other specs. Designing around tires is prudent, because they are in contact with the road, and are directly responsible for acceleration/handling etc.

You've kind of missed the point. The remit is to design a hybrid drive system for a bike, that's the focus, not the bike itself. The bike, beyond some very basic parameters, is irrelevant.The first thing the OP should do is define a realistic scope for his project, along with a feasibility study.
 
  • #18
xxChrisxx said:
You've kind of missed the point and the direction of the thread.

The remit is to design a hybrid drive system for a bike, that's the focus, not the bike itself. The bike, beyond some very basic parameters, is irrelevant.


The first thing the OP should do is define a realistic scope for his project.
A feasibility study is the next step.

this!
lol, I was trying to help him do this!
 
  • #19
I realize you are enthusiastic, and are trying to apply what you have learned to help, but in this case we need to take it one step at a time.

The first step before any project, is scope and feasibility. This is done before all projects in the engineering world. It's basically the same as a literature review in Science.

The OP should begin scouring the interwebs and technical journals/magazines. For any information related to hybrid bikes. Futher to this, he needs to define the scope of his project. This involves him sitting down, and estimating what he is realistically going to be able to achieve with the time and resources available. It's better to a good job with a smaller scope, than a poor job by being overly ambitious.
 
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  • #20
If he can't satisfy the "hybrid portion" of his project, the tires won't matter.

I am sure any tire he might need is already being manufactured.

What is not easily found on the market is the subject of his original post.
 
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  • #21
Can nickel metal hydride battery be used...
 
  • #22
To keep your cost down consider a lead acid AGM battery. Compact and light. Takes a very high amp charge. Select one designed for high cranking amps.
 

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