JP2011119284A5 - - Google Patents

Claims (8)

A plurality of single cells functioning as one side of the end as a positive external terminal and the other side as a negative external terminal,
An intermediate frame, and first and second outer frames disposed on both sides of the intermediate frame, and by sandwiching the plurality of single cells between one side of the intermediate frame and the first outer frame, Is a frame that holds the plurality of unit cells by sandwiching the plurality of unit cells between the other side of the middle frame and the second outer frame;
A plurality of connection conductors for electrically connecting the plurality of unit cells;
Voltage detection wiring for detecting each voltage of the plurality of single cells,
The inner frame is
Two middle frame holding portions in which a plurality of arc-shaped contact portions that contact the end portions of the unit cells are formed on both sides;
An intermediate frame support provided between the two intermediate frame holders and supporting the two intermediate frame holders;
A fitting portion for fitting with each of the first and second outer frames,
The first and second outer frames are respectively
Two middle frame holding portions in which a plurality of arc-shaped contact portions that contact the end portions of the unit cells are formed on the middle frame side;
A fitting portion for fitting with the middle frame,
The middle frame and each of the first and second outer frames are fitted with the fitting portion of the middle frame and the fitting portions of the first and second outer frames. Are combined by
The plurality of single cells are disposed on both sides of the middle frame, and each end thereof is in contact with the contact portion of the middle frame and the first outer frame or the second outer frame. It is held in a state of being sandwiched between the contact parts,
A battery pack characterized by that. The assembled battery according to claim 1,
The contact portion is formed with a positioning portion for positioning the end of the unit cell.
A battery pack characterized by that. The assembled battery according to claim 1 or 2,
In the contact portion, an arcuate groove for filling the bonding material is formed,
A battery pack characterized by that. The assembled battery according to any one of claims 1 to 3,
The plurality of single cells form a ventilation path through which cooling air passes by being held so that the single cells are separated from each other.
A battery pack characterized by that. The assembled battery according to any one of claims 1 to 4,
The plurality of connection conductors are welded to the positive external terminal and the negative external terminal of the unit cell, respectively, in a state of being attached to the middle frame.
A battery pack characterized by that. The assembled battery according to any one of claims 1 to 5,
The fitting portion is constituted by a fitting hole and a protrusion that fits into the fitting hole.
A battery pack characterized by that. The assembled battery according to any one of claims 1 to 6,
A connector is provided on one of the voltage detection wires.
A battery pack characterized by that. The battery module provided with two or more assembled batteries in any one of Claims 1 thru | or 7.