Energy Storage Systems (BESS) – Lithium Ion Batteries

Lithium Ion batteries were first discussed in the 1970’s with the first commercially available lithium ion battery released in 1991. In recent years they have quickly become the favourite choice for consumer electronics. Firstly due to their power density, cost, safety and ability to discharge and charge without a memory effect.

Lithium ion batteries are well suited in Battery Energy Storage Systems (BESS), which need to respond quickly to calls to discharge. For example in frequency response roles for the National Grid.

Yuasa lithium ion batteries

Lithium ion energy storage systems have the following Pros and Cons:

Pros:

  • High energy density
  • Ability to fully discharge without affecting longevity of battery
  • Quick charge and discharge potential
  • Long levels of cycles
  • High efficiency (energy discharged versus energy required to charge)

Cons:

  • Higher initial cost for batteries
  • Battery management system required to prevent under / over voltage

 

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