Restraint fixtures and restraint systems

Abstract

To provide a restraint tool and a restraint system, excellent in position accuracy of a restraint plate at a low cost.SOLUTION: A restraint tool 1 restricts a workpiece 100 formed by sealing a lamination body obtained by laminating a sheet-like positive electrode and a sheet-like negative electrode with a separator into a film-like outer casing. The restraint tool 1 comprises: a plurality of restraint plates 10 arranged in a horizontal direction; an elastic member 21 that is positioned between adjacent restraint plates 10 to form an initial gap W0 between them; a restraint plate support part 30 in which a gap W1 between upper side end parts 11 of the adjacent restraint plates 10 is more expanded than a gap W2 between lower side end parts 12 on the side opposite to the upper side end parts 11, and which supports the plurality of restraint plates 10 so as to enable insertion of the workpiece 100 between the restraint plates 10; and a pressing force restraint part 40 which presses the plurality of restraint plates 10 in an arrangement direction X to compress the elastic member 20 to make the gap between the adjacent restraint plates 10 made smaller than the initial gap W0, and restricts the workpiece 100 inserted into the gap between the adjacent restraint plates 10 via the restraint plates 10.SELECTED DRAWING: Figure 6

Claims

1. A restraining jig for restraining a workpiece, comprising a laminate formed by stacking sheet-shaped positive and negative electrodes together with a separator, and then enclosing the laminate in a film-like outer casing, Multiple restraint plates arranged horizontally so that their main surfaces face each other, An elastic member positioned between adjacent restraint plates and forming an initial gap between adjacent restraint plates, The gap between the upper ends of adjacent restraint plates is wider than the gap between the lower ends on the opposite side of the upper ends, and the restraint plate support portion supports the multiple restraint plates so that the workpiece can be inserted from above between the adjacent restraint plates, A pressing restraint unit that compresses the elastic member by pressing the above-mentioned plurality of restraint plates in the above-mentioned arrangement direction, thereby reducing the gap between adjacent restraint plates to a smaller gap than the initial gap, and restraining the workpiece inserted between adjacent restraint plates via the restraint plates, Equipped with, A restraining jig in which the elastic member is conductive, and when the workpiece inserted between adjacent restraining plates is pressed by the pressing restraining part, the elastic member is configured to contact a current collecting tab provided on the workpiece, allowing current to be supplied to the workpiece via the elastic member.

2. The restraint jig according to claim 1, wherein the plurality of restraint plates have work support portions that abut against the lower end of the laminate portion, which is covered by the outer casing, when the workpiece is inserted, and support the workpiece.

3. The restraint jig according to claim 2, wherein the restraint plate support portion is configured such that when inserting the workpiece between adjacent restraint plates, a gap is formed between the lower ends of the support portion, into which an outer peripheral sealing portion protruding lower than the laminated portion of the workpiece can be inserted.

4. The restraint jig according to any one of claims 1 to 3, wherein a plurality of the above-mentioned elastic members are arranged in a vertical direction between adjacent restraint plates.

5. The restraining jig according to any one of claims 1 to 4, wherein the elastic member is made of a leaf spring.

6. The restraint jig according to any one of claims 1 to 5, wherein the elastic member has a current interruption part configured to break and interrupt the current when a current exceeding a predetermined value flows through the elastic member.

7. The restraining jig according to any one of claims 1 to 6, wherein when inserting the workpiece, the elastic member is configured not to come into contact with the current-collecting tab provided on the workpiece, by widening the gap between the upper ends of adjacent restraining plates to a larger gap than the gap between the lower ends on the opposite side of the upper ends.

8. A restraining jig according to any one of claims 1 to 7, comprising: a positive electrode charging terminal configured to contact all of the elastic members that contact the positive electrode current collector tab provided on the workpiece; and a negative electrode charging terminal configured to contact all of the elastic members that contact the negative electrode current collector tab provided on the workpiece.

9. A restraint jig according to any one of claims 1 to 8, A restraint system comprising: an expansion device that separates the upper end of at least one of the adjacent restraint plates from the other restraint plate, thereby widening the gap between the upper ends to a greater extent than the gap between the lower ends.

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