Battery pack including a shock absorbing device, an air flow plate and an air flow passage
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0632658
(2012-10-01)
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등록번호 |
US-8624552
(2014-01-07)
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우선권정보 |
JP-2008-323654 (2008-12-19) |
발명자
/ 주소 |
- Murayama, Tsuyoshi
- Taga, Hideyuki
- Ogino, Kazutoshi
- Hayashi, Hidekazu
- Suzuki, Hitoshi
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
4 |
초록
One aspect according to the present invention includes a battery pack and a shock absorbing device interposed between a battery cell holder and a case body and capable of keeping the battery cell holder and the battery cells not to directly contact with an inner surface of the case body.
대표청구항
▼
1. A battery pack for an electric tool comprising: a plurality of battery cells including first stage battery cells, second stage battery cells and third stage battery cells;a housing receiving the plurality of battery cells;an air flow passage defined in the housing; anda flow plate disposed in the
1. A battery pack for an electric tool comprising: a plurality of battery cells including first stage battery cells, second stage battery cells and third stage battery cells;a housing receiving the plurality of battery cells;an air flow passage defined in the housing; anda flow plate disposed in the air flow passage and configured such that an air flow flows to cool at least the first stage battery cells, the second stage battery cells and the third stage battery cells, whereinthe first stage battery cells includes a plurality of battery cells that are arranged in a first direction,the second stage battery cells includes a plurality of battery cells that are arranged in a second direction,the third stage battery cells includes a plurality of battery cells that are arranged in a third direction, andthe first stage battery cells, the second stage battery cells, and the third stage battery cells are arranged relative to each other in a fourth direction that is different from the first direction, the second direction, and the third direction. 2. The battery pack according to claim 1, wherein the flow plate is configured such that a flow area of the air passage increases from an upstream side of the air passage toward a downstream side of the air passage. 3. The battery pack according to claim 1, the flow plate includes a plate portion interposed between the first stage battery cells and the second stage battery cells, the plate portion having separators defining a part of the air flow passage therebetween. 4. The battery pack according to claim 1, the flow plate includes a plate portion interposed between the second stage battery cells and the third stage battery cells, the plate portion having separators defining a part of the air flow passage therebetween. 5. The battery pack according to claim 1, wherein the air passage allows air to flow into the housing, and wherein the air passage allows air to flow out of the housing. 6. The battery pack according to claim 1, wherein the first direction, the second direction and the third direction are substantially parallel, andthe fourth direction is substantially perpendicular to the first direction, the second direction and the third direction. 7. The battery pack according to claim 1, wherein the flow plate includes a plate portion configured to divide the air flow flowing into the air flow passage, into at least two different streams. 8. The battery pack according to claim 7, wherein the at least two different streams includes a first stream and a second stream produced on a downstream side of the first stream, the flow rate of air of the second stream is larger than the first stream. 9. A battery pack for an electric tool comprising: a plurality of battery cells including first stage battery cells, second stage battery cells and third stage battery cells;a housing receiving the plurality of battery cells;an air flow passage defined in the housing; anda flow plate disposed in the air flow passage and configured such that an air flow flows to cool at least the first stage battery cells, the second stage battery cells and the third stage battery cells, whereinthe flow plate includes a plate portion including a closed region and an open region positioned on a downstream side of the closed region with respect to the flow of the air flow, any one of the first, second and third stage battery cells includes a first battery cell and a second battery cell positioned on the downstream side of the first battery cell, the closed region is opposed to a surface of the first battery cell, so that the air is not applied directly on the surface of the first battery cell, and the open region is opposed to a surface of the second battery cell, so that the air is applied directly on the surface of the second battery cell. 10. A battery pack for an electric tool comprising: a plurality of battery cells including first stage battery cells, second stage battery cells and third stage battery cells;a housing receiving the plurality of battery cells;an air flow passage defined in the housing; anda flow plate disposed in the air flow passage and configured such that an air flow flows to cool at least the first stage battery cells, the second stage battery cells and the third stage battery cells, whereinthe first, second and third stage battery cells each have opposite end surfaces and the flow plate includes a plate portion having a guide wall to prevent air from reaching to opposite end surfaces of the first, second and third stage battery cells. 11. A battery pack for an electric tool comprising: a plurality of battery cells including first stage battery cells, second stage battery cells and third stage battery cells;a housing receiving the plurality of battery cells;an air flow passage defined in the housing; anda flow plate disposed in the air flow passage and configured such that an air flow flows to cool at least the first stage battery cells, the second stage battery cells and the third stage battery cells, whereinthe flow plate includes a plate portion having the shape of a waveform.
이 특허에 인용된 특허 (4)
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Sun-Soon Park KR, Battery module structure for improving cooling efficiency for electric vehicle.
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Asano Seizi (Okegawa JA), Cell retaining casing for photographic cameras.
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Kouzu Katsumi,JPX ; Kobayashi Takaki,JPX ; Marukawa Shuuhei,JPX ; Etoh Toyohiko,JPX ; Watanabe Koh,JPX ; Fukao Yasuyoshi,JPX ; Kakino Manabu,JPX ; Inui Kiwamu,JPX ; Kanamaru Kunio,JPX, End plate incorporated in battery power source unit.
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Hershberger David E. ; Izenbaard John, Rechargeable battery pack and method for manufacturing same.
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