Honda Motor Co., Ltd.

Kanae Ohkuma

Nobuaki Ishibashi

Ryo Fujii

Harumi Takedomi

Eiji Koike

Christopher Lang

Tomomi Kurita

Masao Kawata

Satoyoshi Oya

Ryo Kitano

Koichi Hasegawa

Takahiro Takai

Tetsuya Sugizaki

Itsuki Shimazaki

Seiichi Sato

Kengo Aoki

Hidemi Seki

Yohei Azuma

Takaaki Iijima

Makoto Wada

Battery cases are formed such that a small second battery case is disposed on an upper front part of a large first battery case, the second battery case is disposed below a front part of a seat cushion of a rear seat, a recess portion extending in a fore-and-aft direction and having at least part of an exhaust passage member passing therethrough is formed in a lower face of a middle part in a vehicle width direction of the first battery case, battery modules housed in the first battery case are disposed on left and right sides of the recess portion, and a battery module housed in the second battery case is disposed so that a longitudinal direction thereof follows the vehicle width direction. Therefore, it is possible to ensure the headroom for a rear seat by disposing the rear seat at as low a position as possible.

Electric vehicle

A battery pack which is placed below a floor panel of a vehicle, includes a battery, a case for accommodating the battery, and a pressure release mechanism for releasing pressure inside the case. The pressure release mechanism includes a communication member which has one end and the other end and where the one end is connected to the case, and a gas discharge unit connected to the other end of the communication member and having a labyrinth structure.

Battery pack

In this battery pack arrangement structure, since a case main body of a battery case is made of a metal by die-casting, not only is it possible to reduce the number of components and the weight by forming, integrally with the case main body, a cross member protruding upward from a case bottom wall and extending in the vehicle width direction and a second fixing portion protruding outward in the vehicle width direction from a case side wall, but it is also possible to enhance the side collision resistance by increasing the strength of the case main body including the cross member and the second fixing portion. Moreover, since the second fixing portion protruding outward in the vehicle width direction from the case side wall is fixed to a floor frame, due to the collision load of a side collision being directly transmitted from the floor frame to the cross member of the case main body and supported, it is possible to ensure the side collision resistance even when the strength of the floor frame is decreased so as to lighten the weight.

Battery pack arrangement structure

A first connector on a case front wall of a battery pack is connected to a first electric motor with a first power line interposed therebetween. A second connector on a case rear wall of the battery pack is connected to a second electric motor with a second power line interposed therebetween. A fuel tank is arranged behind the battery pack. A muffler is disposed on an exhaust pipe extending from an engine toward the rear along a side surface in a vehicle width direction of the battery pack and is inclined so as to be near the fuel tank behind the battery pack. The second power line is at least partially arranged in a space surrounded by the second connector, the fuel tank, and the muffler as seen in a vertical direction.

Hybrid vehicle

A battery pack () in which a cell stack () having a plurality of rectangular cells () stacked is housed in an interior of a battery case () includes an end plate () disposed on one end side in a stacking direction of the cell stack (), a wedge member () disposed on the side of the end plate () opposite to the cell stack (), and a bolt () disposed in a bolt screw-in direction that is orthogonal to the stacking direction and urging the wedge member () toward a bottom wall () of the battery case (), and first abutment faces () via which the wedge member () and the end plate () abut against each other are formed from an inclined face that is inclined toward the bolt () side in the bolt screw-in direction. Therefore, it is possible to apply strong compression to the cell stack () with a simple structure and to suppress expansion of the rectangular cell (), and moreover to enhance the energy density per unit volume while reducing the dimensions and weight of the battery pack ().

In a cooling structure for a battery pack, a case bottom wall of a first battery case is divided into left and right case bottom walls. A first cooling medium jacket includes left and right first cooling medium jackets formed respectively in the left and right case bottom walls. Left ends of the left first cooling medium jacket and second cooling medium jacket are made to communicate with each other via a left cooling medium passage. Right ends of the right first cooling medium jacket and second cooling medium jacket are made to communicate with each other via a right cooling medium passage. Accordingly, it is possible to simplify the structure of a cooling medium passage for supplying cooling medium to a cooling medium jacket of battery cases on two levels.

Cooling structure for battery pack

In a battery case fixing structure, a case side wall, facing outward in a vehicle width direction, of a battery case includes at least two fixing portions that project outward in the vehicle width direction and are fixed to a vehicle body, and a linking wall that is formed as a planar shape opposing the case side wall and links the at least two fixing portions in a fore-and-aft direction, the fixing portions and the linking wall being formed integrally with the battery case. Accordingly, it is possible to enhance the side collision resistance performance by increasing the strength of a battery case of an electric vehicle.

Battery case fixing structure

An electric storage device includes a first connection plate, a second connection plate, a fastening member, and a plurality of storage modules. The plurality of storage modules are provided between the first connection plate and the second connection plate in a stacking direction. Each of the plurality of storage modules includes a plurality of rectangular storage cells stacked in the stacking direction to provide a stack of storage cells. The plurality of storage modules are arranged next to each other in a direction that crosses the stacking direction. The plurality of storage modules are clamped between the first connection plate and the second connection plate and fastened together by the fastening member. At least one of the first connection plate and the second connection plate is fastened to the plurality of storage modules in the stacking direction by the fastening member.

Electric storage device

An electric storage device includes a plurality of storage modules and a first storage-module busbar. The plurality of storage modules each include a storage-cell busbar and a plurality of storage cells. The storage-cell busbar includes a first storage-module terminal at a first end of the storage-cell busbar. The plurality of storage cells are electrically connected to each other with the storage-cell busbar. The first storage-module terminal provided in one of the plurality of storage modules is electrically connected to the first storage-module terminal provided in another of the plurality of storage modules with the first storage-module busbar. The first storage-module terminal includes a first stud bolt which extends through a bolt hole provided in the first storage-module busbar and to which a nut is fastened.

An electric storage device includes at least first to third storage modules and storage-module busbars. The at least first to third storage modules each include a plurality of storage cells. The at least first to third storage modules are arranged next to each other. Storage-module terminals of the at least first to third storage modules are adjacent to each other. The storage-module terminals of the at least first to third storage modules are electrically connected to each other with the storage-module busbars. The storage-module busbars includes a long storage-module busbar and a short storage-module busbar. The long storage-module busbar is provided at a first side of the at least first to third storage modules. The short storage-module busbar is provided at a second side of the at least first to third storage modules. The long storage-module busbar is longer than the short storage-module busbar.

Electric storage device and structure to mount electric storage device to vehicle

A cooling structure for batteries and electrical units, that cools the batteries being driving sources of a motor mounted in a vehicle capable of traveling by a driving force of the motor and electrical units for driving the motor, the cooling structure including: a plurality of battery boxes that each contain one of the batteries; cooling passages that are each formed in each of the battery boxes, through which cooling air flows; a merging part where downstream ends of the cooling passages of the battery boxes are merged with each other; and cooling portions of the electrical units, that are provided on a downstream side of the merging part, wherein the electrical units are disposed on a downstream side of the battery boxes.

Cooling structure for batteries and electrical units

A high-voltage apparatus includes a battery device, a high-voltage control device, a housing, and a cooling structure. The cooling structure includes a first cooling channel to cool the battery device, a second cooling channel to cool the high-voltage control device, a connection channel connecting the first cooling channel to the second cooling channel, and a ventilator. The connection channel has a first opening portion connected to the first cooling channel, a second opening portion connected to the second cooling channel, and an inner flow path to communicate the first opening portion to the second opening portion. A sectional area of the first opening portion and a sectional area of the second opening portion are each set to be smaller than a sectional area of the inner flow path.

High-voltage apparatus and vehicle

A battery box housing a battery is mounted between left and right side frames extending in a longitudinal direction of a vehicle body so that the battery box is offset to a left side of the vehicle body, and an intake duct and an exhaust duct for cooling air for cooling the battery are connected to an end of the battery box on a right side of the vehicle body. Therefore, it is possible not only to protect the battery between the left and right frames from a shock caused upon a side collision, but also to ensure a space for disposition of the intake duct and the exhaust duct while ensuring a volume of the battery box to the maximum. Moreover, the battery box is connected at its left and right ends to the left and right side frames.

Power source device and battery cooling structure for vehicle

A rear seat is foldable by moving downward a seat cushion and folding forward a seat back. A power source unit is disposed below a rear floor to the rear of the rear seat. When the rear seat is in an unfolded state, cooling air can be introduced from inside a vehicle compartment, through a space between a lower surface of the seat cushion and an upper surface of an underseat floor, into a cooling-air introduction port in the power source unit. When the rear seat is in a folded state, the cooling air is introduced from inside the vehicle compartment, through cooling-air introduction passages, into the cooling-air introduction port. Thus, the power source unit can be cooled irrespective of whether the rear seat is in the folded state, without reducing the foldability of the rear seat.

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Wako, Japan

Kanae Ohkuma