Toyohiko Eto
Toyohiko Eto, Toyota-Shi JP
Patent application number | Description | Published |
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20080213653 | BATTERY PACK - In a battery pack where a fan is housed within a case housing a battery stack, the noise generated from turbulence of a medium that is supplied and exhausted between a fan opening of the fan and the battery stack is reduced. The battery pack has a battery stack, a cooling fan installed adjacent to the battery stack and having a fan opening formed in a top surface for taking in cooling air after cooling the battery stack, an upper case for covering the upper part of the battery stack and the cooling fan, and a junction duct for guiding the cooling air after cooling the battery stack to the fan opening. The junction duct is formed from the duct lower unit having an opening formed at a location facing the fan opening and one wall of the upper case in contact with a lower end and periphery of the duct lower unit. | 09-04-2008 |
20090068549 | Nickel-metal hydride secondary battery module and secondary battery module manufacturing method - A nickel-metal hydride secondary battery includes: a plurality of power generating elements each having a negative plate containing hydrogen absorbing alloy; a battery case provided with partition walls and a plurality of compartments arranged adjacently on both sides of each partition wall, each of the compartments accommodating each power generating element, and the compartments allowing gas intercommunication between compartments through communication holes formed in the partition walls; and at least one of safety valves placed on the battery case, the safety valves being less in number than the number of the compartments; wherein each of the communication holes has a hole sectional area per battery module capacity in a range 0.03 to 0.30 mm | 03-12-2009 |
20090155672 | Secondary battery - A secondary battery comprises a power generating element, a battery case including a gas release hole, and a valve safety device configured to close the gas release hole and release gas out of the battery case when inner pressure in the battery case exceeds a predetermined value. The safety valve device comprises a valve member and a holding member. The valve member includes a sealing portion hermetically making contact with a sealed surface around the gas release hole, and the holding member is fixed to the battery case to elastically press the sealing portion by its elastic deformation. | 06-18-2009 |
20100209769 | SEALED-TYPE SECONDARY BATTERY - A sealed-type secondary battery is disclosed. A battery module of a sealed-type secondary battery is formed by heating and fusing a top lid member and an integrated battery container. The integrated battery container is formed with a polymer alloy including a polyphenylene ether resin and a polyolefin resin, and the top lid member or a lateral lid member is formed with a polypropylene-based resin. A nucleating agent is added to the polypropylene-based resin of the top lid member or the lateral lid member, to improve mechanical strength, and the molecular weight is increased to reduce a melt flow rate MFR to approximately the same degree as the polymer alloy. | 08-19-2010 |
Toyohiko Eto, Aichi-Ken JP
Patent application number | Description | Published |
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20080199763 | Sealed Battery - A battery cell comprising a battery housing case formed with a through hole communicating with an interior space, a hollow rivet, and a seal rubber. The hollow rivet has a seal surface annularly extending outside the battery housing case, and a hollow portion formed with an exhaust port continuous to the inner edge of the seal surface and positioned at the through hole to allow gas in the interior space to flow out through the exhaust port. The seal rubber has a contact unit extending annularly facing the seal surface to press the seal surface and is provided so as to close the exhaust port. The contact unit is formed to project toward the seal surface so as to contact the seal surface at a position away from the inner edge of the seal surface. Such an arrangement prevents an electrolyte leakage over a long period of time. | 08-21-2008 |
20090061289 | Battery Module, Battery Pack, and Method for Producing the Battery Module - An inexpensive battery pack including a battery module wherein a safety valve is provided for each cell in which battery pack gas leakage can be prevented. A battery pack | 03-05-2009 |
Toyohiko Eto, Aichi JP
Patent application number | Description | Published |
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20090023063 | SEALED BATTERY AND METHOD FOR MANUFACTURING THE SAME - A sealed battery includes a metal case which functions as a connection terminal of one polarity and an electrode post which is mounted to the case in an insulated manner and functions as a connection terminal of the other polarity. A sealing section with electrical insulation properties is disposed between the electrode post formed from a hollow cylinder with one closed end and an electrode post through-hole provided in the case. A compression deformation section is produced by deforming the closed end of the electrode post radially outward, for compressing and sealing the sealing section, and for securing the electrode post to the case. | 01-22-2009 |
20090029244 | BATTERY, AND BATTERY MANUFACTURING METHOD - Provided are a low-cost battery in which an outermost first electrode plate is designed to be bent at a bent portion farther from a current collector than its own joint end so that a near portion extending from the bent portion to the joint end is positioned inward in a lamination direction than a distant portion positioned farther from the current collector than the bent portion, and first electrode plates including the outermost first electrode plate are connected to a collector joint part, and a manufacturing method thereof. In the battery of the invention, a negative collector joint part is connected to a negative joint end of an inside negative electrode plate with a fillet formed of metal melted from the negative collector joint part itself and also connected to a negative joint end of an outermost negative electrode plate with a fillet formed of metal melted from the negative collector joint part itself. | 01-29-2009 |
Toyohiko Eto, Kosai-Shi JP
Patent application number | Description | Published |
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20120121948 | PRISMATIC SEALED RECHARGEABLE BATTERY, BATTERY MODULE, AND BATTERY PACK - A prismatic sealed rechargeable battery includes a substantially prismatic battery case that accommodates an electrode plate assembly and an electrolyte solution. The battery case is formed of metal. On a side face of the battery case, a thin plate is provided which has a plurality of protruding portions formed in parallel at appropriate intervals. The protruding portion and the side face form spaces opened at both ends therebetween. The thin plate is bonded to the side face of the battery case by making flat portions between the protruding portions into surface-contact with the side face, thereby improving cooling capability of the battery. | 05-17-2012 |