POWER SUPPLY SYSTEM

摘要

A first power storage section and a second power storage section are connected in parallel. The first power storage section includes a first non-aqueous electrolyte secondary battery. The second power storage section includes parallel-connected second non-aqueous electrolyte secondary batteries. Each of the second non-aqueous electrolyte secondary batteries has a higher energy density than that of the first non-aqueous electrolyte secondary battery. In a case where the second power storage section is discharged at a current value corresponding to a first assumed maximum discharge current value, the parallel-connected number of the second non-aqueous electrolyte secondary batteries is set such that a discharge rate of each of the second non-aqueous electrolyte secondary batteries becomes the preset reference discharge rate or less.

主权项

1. A power supply system comprising:
a first power storage section including a first non-aqueous electrolyte secondary battery; and a second power storage section connected to the first power storage section in parallel, and including a plurality of parallel-connected second non-aqueous electrolyte secondary batteries, wherein the second non-aqueous electrolyte secondary batteries each have a higher energy density than an energy density of the first non-aqueous electrolyte secondary battery, wherein an internal resistance ratio of each of the second non-aqueous electrolyte secondary batteries to the first non-aqueous electrolyte secondary battery is set at a range of 10 to 35 inclusive, wherein based on an assumed maximum discharge current value of a parallel-connected system of the first power storage section and the second power storage section, and a first assumed maximum discharge current value of the first non-aqueous electrolyte secondary battery which is calculated from the internal resistance ratio, a capacity value of the first power storage section is set such that a discharge rate of the first non-aqueous electrolyte secondary battery becomes a preset reference discharge rate or less, wherein based on a second assumed maximum discharge current value of the second non-aqueous electrolyte secondary batteries which is calculated from the assumed maximum discharge current value, the internal resistance ratio, and a parallel-connected number of the second non-aqueous electrolyte secondary batteries, a capacity value of the second power storage section is set such that a discharge rate of each of the second non-aqueous electrolyte secondary batteries is the preset reference discharge rate or less, and wherein the parallel-connected number of the second non-aqueous electrolyte secondary batteries is set such that the discharge rate of each of the second non-aqueous electrolyte secondary batteries is the preset reference discharge rate or less even in a case where the second power storage section is discharged at a current value corresponding to the first assumed maximum discharge current value.