To provide a storage battery unit that can reduce the overall size and cost and can improve the workability during assembly/disassembly by simplifying a structure of a part connecting with a charging state detection means.
A plurality of battery cells 2 having at least either a positive electrode 3a or a negative electrode 3b at one side are arranged in a stack, and are connected in series via a bus bar. Charging state detection terminals are provided at the bus bar and an end electrode 3a. Locations excluding the charging state detection terminals on the electrodes 3a, 3b and the bus bar is covered by an insulated holder 6 for holding many battery cells 2. Connector contacts abutting on the charging state detection terminals are provided on a conductive circuit board 10, which is fixed to the insulated holder 6. The conductive circuit board 10 is connected with a voltage controller 15 including voltage detection circuits 17A, 17B.
Tadashi Takahashi
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
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