Patent ID: 11967682
Assignee: PANASONIC ENERGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A battery pack comprising:
a plurality of battery blocks, each battery block of the plurality of battery blocks including a plurality of battery cells arranged at fixed positions by a holder, the plurality of battery cells being connected together by lead plates; and
a circuit board to which the plurality of battery blocks are fixed, wherein
each of the plurality of battery blocks have terminal parts to be connected to the circuit board,
the circuit board has connection parts, one of connection parts being connected to a corresponding one of the terminal parts of the each of the plurality of battery blocks to connect by coupling the terminal parts of the each of the plurality of battery blocks to the connection parts of the circuit board, the plurality of battery blocks in series or in parallel, and the plurality of battery blocks are coupled via the circuit board,
wherein the terminal parts include output terminals of the plurality of battery blocks and voltage detection terminals that detect a voltage of the plurality of battery cells of a corresponding battery block of the plurality of battery blocks,
the output terminals being connected to corresponding connection parts of the circuit board different from the voltage detection terminals connection to the connection parts of the circuit board,
wherein the plurality of battery blocks includes:
a first battery block that has a first pair of output terminals common to all the plurality of battery cells included in the first battery block, and
a second battery block that has a second pair of output terminals common to all the plurality of battery cells included in the second battery block,
wherein the circuit board includes a single circuit board configured to connect with the first pair of output terminals and the second pair of output terminals, so as to electrically and physically interconnect the first battery block and the second battery block via the single circuit board,
the plurality of battery cells are arranged parallel to each other so as to have end surfaces thereof facing in a first direction, and side surfaces thereof facing in a second direction perpendicular to the first direction, and
each of the lead plates has one, proximal end thereof attached to an end of the plurality of battery cells in the first direction, and another, distal end thereof terminating in a corresponding one of the output terminals and the voltage detection terminals, wherein an intermediate portion between the proximal and distal ends of the lead plate extends along the side surfaces of the plurality of battery cells.