Assembled battery and manufacturing method of assembled battery
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-002/10
H01M-002/14
출원번호
US-0947541
(2015-11-20)
등록번호
US-10062880
(2018-08-28)
우선권정보
JP-2014-237508 (2014-11-25)
발명자
/ 주소
Morimitsu, Takatoshi
Okura, Toshinori
출원인 / 주소
TOYOTA JIDOSHA KABUSHIKI KAISHA
대리인 / 주소
Sughrue Mion, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
1
초록▼
An assembled battery includes: a holder including a plurality of cell hold portions each having a first surface and a second surface facing an opposite side to the first surface and each having a holding hole, which is a hole penetrating through between the first surface and the second surface, and
An assembled battery includes: a holder including a plurality of cell hold portions each having a first surface and a second surface facing an opposite side to the first surface and each having a holding hole, which is a hole penetrating through between the first surface and the second surface, and a connection portion that connects the plurality of cell hold portions to each other; a plurality of cells each having an outside diameter smaller than an inside diameter of the holding hole and inserted into the holding hole of each of the plurality of cell hold portions; and an adhesive provided so as to be solidified in a gap between an outer peripheral surface of a part of the cell which is placed inside the holding hole and an inner peripheral surface of the cell hold portion which constitutes the holding hole.
대표청구항▼
1. An assembled battery comprising: a holder including a plurality of cell hold portions each having a first surface and a second surface facing an opposite side to the first surface and each having a holding hole, which is a hole penetrating through between the first surface and the second surface,
1. An assembled battery comprising: a holder including a plurality of cell hold portions each having a first surface and a second surface facing an opposite side to the first surface and each having a holding hole, which is a hole penetrating through between the first surface and the second surface, wherein a direction from the first surface toward the second surface is defined as an upward direction, anda connection portion that connects the plurality of cell hold portions to each other;a plurality of cells each having an outside diameter smaller than an inside diameter of the holding hole and inserted into the holding hole of each of the plurality of cell hold portions; andan adhesive provided so as to be solidified in a gap between an outer peripheral surface of a part of the cell, the part of the cell being placed inside the holding hole and an inner peripheral surface of the cell hold portion, the inner peripheral surface of the cell hold portion constituting the holding hole,wherein each of the plurality of cells includes a negative terminal and a positive terminal, and a distance between the negative terminal and the second surface is less than a distance between the positive terminal and the second surface, and wherein the negative terminal protrudes no further than the second surface in the upward direction,wherein:the cell hold portion is configured such that an inside diameter of a first open end, which is an open end of the holding hole on a first-surface side, is smaller than an inside diameter of a second open end, which is an open end of the holding hole on a second-surface side; andthe inner peripheral surface constituting the holding hole includes a tapered surface having an inside diameter that is decreased toward the first-surface side from the second-surface side,a chamfered part of the cell hold portion includes the second open end,a position on the inner peripheral surface where the tapered surface is disposed is different from a position where the chamfered part of the cell hold portion is disposed. 2. The assembled battery according to claim 1, wherein the cells are fixed to the holder in a state where the cells are held by the cell hold portions via the adhesive. 3. The assembled battery according to claim 1, further comprising a resin sheet provided so as to make contact with the first surfaces of the plurality of cell hold portions, the resin sheet having through holes penetrating through the resin sheet, wherein:the through holes of the resin sheet each have an inside diameter smaller than the inside diameter of the holding hole of the cell hold portion and smaller than the outside diameter of the cell; andan annular hole surrounding portion of the resin sheet which is a part constituting the through hole and is placed around the through hole is accommodated in the holding hole in a state where the annular hole surrounding portion makes contact with the outer peripheral surface of the cell inserted in the holding hole. 4. A manufacturing method of an assembled battery, the assembled battery including: a holder includinga plurality of cell hold portions each having a first surface and a second surface facing an opposite side to the first surface and each having a holding hole, which is a hole penetrating through between the first surface and the second surface, wherein a direction from the first surface toward the second surface is defined as an upward direction, anda connection portion that connects the plurality of cell hold portions to each other; anda plurality of cells each having an outside diameter smaller than an inside diameter of the holding hole and inserted into the holding hole of each of the plurality of cell hold portions, wherein each of the plurality of cells includes a negative terminal and a positive terminal,the manufacturing method comprising:a cell insertion step of inserting the cells into the holding holes of the cell hold portions in the upward direction, so that a distance between the negative terminal and the second surface is less than a distance between the positive terminal and the second surface, and wherein the negative terminal protrudes no further than the second surface in the upward direction; andan adhesive injection step of injecting an adhesive into a gap between an outer peripheral surface of a part of the cell, the part of the cell being placed inside the holding hole and an inner peripheral surface of the cell hold portion, the inner peripheral surface of the cell hold portion constituting the holding hole,wherein:the cell hold portion is configured such that an inside diameter of a first open end, which is an open end of the holding hole on a first-surface side, is smaller than an inside diameter of a second open end, which is an open end of the holding hole on a second-surface side; andthe inner peripheral surface constituting the holding hole includes a tapered surface having an inside diameter that is decreased toward the first-surface side from the second-surface side, anda chamfered part of the cell hold portion includes the second open end,a position on the inner peripheral surface where the tapered surface is disposed is different from a position where the chamfered part of the cell hold portion is disposed. 5. The manufacturing method of the assembled battery, according to claim 4, wherein a viscosity of the adhesive to be injected in the adhesive injection step is within a range of 1 to 500 mPa s. 6. The manufacturing method of the assembled battery, according to claim 4, further comprising: a resin sheet setup step of placing, before the cell insertion step, a resin sheet having through holes each having an inside diameter smaller than an inside diameter of the holding hole of the cell hold portion and smaller than an outside diameter of the cell, the resin sheet being placed so as to make contact with the first surfaces of the plurality of cell hold portions,wherein:in the resin sheet setup step, the resin sheet is placed so that an annular hole surrounding portion of the resin sheet which is a part constituting the through hole and is placed around the through hole is put on the holding hole in an axis direction of the holding hole;in the cell insertion step, the cells are inserted into the holding holes from a first-surface side of the cell hold portions; andin the adhesive injection step, the adhesive is injected into the gap from a second-surface side of the cell hold portion in a state where the second surface of the cell hold portion is directed upward. 7. The manufacturing method of the assembled battery, according to claim 4, wherein in the adhesive injection step, the adhesive is injected into the gap from the second-surface side of the cell hold portion in a state where the second surface of the cell hold portion is directed upward. 8. An assembled battery comprising: a holder including a plurality of cell hold portions each having a first surface and a second surface facing an opposite side to the first surface and each having a holding hole, which is a hole penetrating through between the first surface and the second surface, wherein a direction from the first surface toward the second surface is defined as an upward direction, anda connection portion that connects the plurality of cell hold portions to each other;a plurality of cells each having an outside diameter smaller than an inside diameter of the holding hole and inserted into the holding hole of each of the plurality of cell hold portions; andan adhesive provided so as to be solidified in a gap between an outer peripheral surface of a part of the cell, the part of the cell being placed inside the holding hole and an inner peripheral surface of the cell hold portion, the inner peripheral surface of the cell hold portion constituting the holding hole,wherein each of the plurality of cells includes a negative terminal and a positive terminal, and a distance between the negative terminal and the second surface is less than a distance between the positive terminal and the second surface, and wherein the negative terminal protrudes no further than the second surface in the upward direction, and the outside diameter of the cell is smaller than the inside diameter of the holding hole throughout the holding hole. 9. A manufacturing method of an assembled battery, the assembled battery including: a holder includinga plurality of cell hold portions each having a first surface and a second surface facing an opposite side to the first surface and each having a holding hole, which is a hole penetrating through between the first surface and the second surface, wherein a direction from the first surface toward the second surface is defined as an upward direction, anda connection portion that connects the plurality of cell hold portions to each other; anda plurality of cells each having an outside diameter smaller than an inside diameter of the holding hole and inserted into the holding hole of each of the plurality of cell hold portions, wherein each of the plurality of cells includes a negative terminal and a positive terminal,the manufacturing method comprising:a cell insertion step of inserting the cells into the holding holes of the cell hold portions in the upward direction, so that a distance between the negative terminal and the second surface is less than a distance between the positive terminal and the second surface, and wherein the negative terminal protrudes no further than the second surface in the upward direction; andan adhesive injection step of injecting an adhesive into a gap between an outer peripheral surface of a part of the cell, the part of the cell being placed inside the holding hole and an inner peripheral surface of the cell hold portion, the inner peripheral surface of the cell hold portion constituting the holding hole, and the outside diameter of the cell is smaller than the inside diameter of the holding hole throughout the holding hole.
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