Browse Publications Technical Papers 2013-01-1543
2013-04-08

Newly Developed Lithium-Ion Battery Pack Technology for a Mass-Market Electric Vehicle 2013-01-1543

This paper describes a high-capacity lithium-ion battery pack that was newly developed for use in global mass production of the Nissan LEAF electric vehicle. The mass-market Nissan LEAF was launched in December 2010, and mass production began on a global scale in 2012. This development is in line with the Nissan Green Program 2010, a medium-term environmental action plan under which the diffusion of zero-emission cars is being promoted.
The lithium-ion battery is one of the key technologies of electric vehicles (EVs). The battery pack accounts for a large proportion of the EV body size, weight and cost. Therefore, achieving a smaller, lighter and less expensive battery pack suitable for global mass production on a scale comparable to vehicle mass production will be an important factor in supporting widespread diffusion of EVs.
The newly developed battery pack cuts the weight and costs significantly as a result of simplifying the structures of the battery module and battery pack. The battery pack development policy is outlined below.
  • Downsizing and simplification of components
  • Reducing the number of components through parts integration
  • Increasing local and leading competitive country procurement rates through outsourcing
This paper describes the lithium-ion battery pack and module for global mass production and the key breakthrough technologies that made them possible.

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