Electrochemical cell module
Provided is an electrochemical cell module in which a plurality of electrochemical cell modules may be used in a combined state. In an electrochemical cell module 1 where both ends of six cylindrical electrochemical cells (lithium ion battery cells 3 ) electrically connected to one another and arranged juxtaposedly are respectively held by a pair of cell holders 5 and 7 , and a control circuit holder 9 is attached to an outside of the cell holder 5 , which is one of the pair of the cell holders 5 and 7 . The control circuit holder 9 receives a control circuit 41 operable to control voltages of the six lithium ion battery cells.
1. An electrochemical cell module comprising:
a plurality of cylindrical electrochemical cells electrically connected to one another and arranged juxtaposedly;
a pair of cell holders configured to respectively hold both ends of the plurality of cylindrical electrochemical cells;
a control circuit operable to control voltages of the plurality of cylindrical electrochemical cells;
a control circuit holder configured to receive the control circuit therein and attached to an outside of one of the pair of cell holders; and
a terminal holder including a pair of input/output terminals through which charge and discharge current flows and an external connection terminal portion for input/output of control information to/from the control circuit, and attached to the other of the pair of cell holders, wherein
the control circuit holder includes an opposed wall portion opposed to the one of the pair of cell holders;
the opposed wall portion is formed with one or more lead wire insertion through holes;
a plurality of lead wires operable to electrically connect the plurality of cylindrical electrochemical cells and the control circuit are inserted into the control circuit holder through the one or more lead wire insertion through holes;
the plurality of lead wires and the control circuit are connected via a connector;
the plurality of lead wires comprise:
voltage detection wires extending from the respective cylindrical electrochemical cells to the control circuit and operable to detect voltages of the respective cylindrical electrochemical cells; and
signal wires extending from the control circuit to the external connection terminal portion located in the other of the pair of cell holders;
a first insulating guide member and a second insulating guide member are disposed between the pair of cell holders and each have a passage therein;
the voltage detection wires are passed through the passage of the first insulating guide member; and
the signal wires are passed through the passage of the second insulating guide member.
2. The electrochemical cell module according to claim 1 , wherein:
the first and second insulating guide members each have a splittable structure to be split into two at a splitting plane assumed along the passage.