Parallel connection of electrical storage devices

摘要

The first and second electrical storage devices (1,2) are connected to connecting terminals (Ke), so that electrical connection between storage devices and connecting terminals is establishable or interruptible by switches (S1,S2). The connection between first device and terminals is established, and connection between second device and terminals is interrupted. The connection between second device and terminals is established if difference between terminal voltage of first device and no-load voltage (VBat2) of second storage device is less than predefined differential add-on voltage. An independent claim is included for circuit of electrical storage devices.