White Papers

Exploring issues relating to Li-Ion cells and batteries

From Elithion:

• Li-ion cells
  • Resistance vs. impedance
• Li-ion charging
  • The 3 charging stages
  • Charger control
• Li-ion load
  • Cell voltage reversal connecting to capacitive load
  • Capacitor across battery
• Li-ion balancing
  • How much balance current is enough?
  • Dissipative vs non-dissipative (active vs passive) balance
  • Redistribution
  • Pre-balancing cells by connecting them in parallel
• Li-ion battery pack design
  • Short Discharge Time
  • Series / parallel cell arrangement
  • Cells in parallel
  • Lots of small cells are better than one big one
  • Spaghetti? In my battery? Distributed vs. non-distributed BMSs
• Li-ion cell protection
  • Mind that BMS: Charging & Discharging limits
  • Low voltage cut-off: a false sense of security
  • CCCV chargers: a false sense of security
• Li-ion BMS.
  • Estimating the State Of Charge of Li-Ion batteries
  • BMS chips
• Misc.
  • Split (center-tap) batteries for bipolar charger / inverters or bipolar PV arrays
  • The Ignition switch conundrum
  • Role of the EV Button in Prius PHEV conversions

From other sites:

• Battery and Energy Technologies from Woodbank Communications Ltd
• Boost battery performance with nondissipative charge balancing (pdf)
• Battery management system from Albert van Dalen

 

These papers by Davide Andrea are licensed under a Creative Commons Attribution-Share Alike 3.0 Unported License. Permissions beyond the scope of this license may be available by contacting the author.