Abstract: A battery case includes a first cell accommodating portion that accommodates a first number of battery cells, and a second cell accommodating portion that accommodates a second number of battery cells, smaller than the first number. The second cell accommodating portion is shorter than the first cell accommodating portion in one of three directions parallel to sides of the battery case. The battery case further includes a board accommodating portion, which is adjacent to the second cell accommodating portion in the one of the three directions, and that accommodates a circuit board therein; a first partition wall arranged between the first cell accommodating portion and the board accommodating portion; and a second partition wall arranged between the second cell accommodating portion and the board accommodating portion. Thus, the thickness of the battery is reduced and the circuit board is separated from the battery cells.

Abstract: A battery includes a controller configured or programmed to manage battery cells disposed inside a housing. The controller is arranged one of forward or rearward of the battery cells. The housing includes right and left housing half bodies which define right and left portions of the housing, respectively, and are assembled together in a lateral direction. The battery prevents an increase in the width of a saddle-type electric vehicle while securing a sufficient capacity of the housing.

Abstract: A battery case includes a first cell accommodating portion that accommodates a first number of battery cells, and a second cell accommodating portion that accommodates a second number of battery cells, smaller than the first number. The second cell accommodating portion is shorter than the first cell accommodating portion in one of three directions parallel to sides of the battery case. The battery case further includes a board accommodating portion, which is adjacent to the second cell accommodating portion in the one of the three directions, and that accommodates a circuit board therein; a first partition wall arranged between the first cell accommodating portion and the board accommodating portion; and a second partition wall arranged between the second cell accommodating portion and the board accommodating portion. Thus, the thickness of the battery is reduced and the circuit board is separated from the battery cells.

Abstract: A battery includes a controller configured or programmed to manage battery cells disposed inside a housing. The controller is arranged one of forward or rearward of the battery cells. The housing includes right and left housing half bodies which define right and left portions of the housing, respectively, and are assembled together in a lateral direction. The battery prevents an increase in the width of a saddle-type electric vehicle while securing a sufficient capacity of the housing.

Abstract: A fuel cell system includes a fuel cell which generates electric energy by an electro-chemical reaction, a water tank which stores water from the fuel cell, an intake pipe which has an inlet port for introducing moisture-containing exhaust gas from the fuel cell into the water tank and is connected with the water tank, an exhaust pipe which has an exhaust port for exhausting gas from the water tank and is connected with the water tank, and a partition member which is provided in the water tank at a position lower than the inlet port for partitioning an interior of the water tank into an upper space and the lower space. The fuel cell system is capable of collecting water from the fuel cell easily and efficiently without depending upon a large component or decreasing power generation efficiency.

Abstract: A fuel cell system includes a fuel tank which stores a methanol fuel, an aqueous solution tank which stores a methanol aqueous solution having a concentration less than that of the methanol fuel, a fuel pump which supplies the methanol fuel stored in the fuel tank to the aqueous solution tank, a fuel cell stack which is supplied with the methanol aqueous solution from the aqueous solution tank for generating electric energy through electrochemical reactions, a water tank which stores water to be supplied to the aqueous solution tank, a water pump for supplying water stored in the water tank to the aqueous solution tank, a concentration sensor which detects the concentration of the methanol aqueous solution supplied to the fuel cell stack, a fluid surface detection sensor which detects a fluid surface height of the methanol aqueous solution in the aqueous solution tank, and a controller which controls a supply operation of the fuel pump and the water pump based on an output from the concentration sensor, and s

Abstract: An electrically-powered scooter including a front wheel, a rear wheel and a frame assembly. A handlebar assembly and a seat assembly are supported by the frame assembly. The frame assembly includes a left frame rail and a right frame rail spaced laterally from one another and extending between the handle bar assembly and the seat assembly. A battery support extends between the left and the right frame rails at a position intermediate the handle bar assembly and the seat assembly. A battery is supported by the battery support. In one arrangement, the battery support includes an enclosure defining a battery storage chamber. The enclosure includes a guide member configured to engage a guide recess of the battery to guide the battery into the battery storage chamber. In another arrangement, the battery may include a recharging port, an axis of which defines an oblique angle with an axis of the battery.

Abstract: A direct methanol fuel cell system is constructed to sit stably and to minimize external influences of impacts on a fuel cell stack. The fuel cell system includes an aqueous solution tank for storing a methanol aqueous solution, a fuel tank for storing a methanol fuel to be supplied to the aqueous solution tank, and a fuel cell stack supplied with the methanol aqueous solution from the aqueous solution tank for generating electric energy through electrochemical reactions. The fuel tank and the aqueous solution tank are disposed above the fuel cell stack.

Abstract: A front suspension fork assembly suitable for use with a scooter-type vehicle. The front fork assembly is rotatably supported by a frame of the scooter and supports a front wheel of the scooter on its lower end. Desirably, the front fork assembly includes right and left fork legs extending along opposing sides of the front wheel. Each fork leg includes an upper fork tube telescopically engaged with a lower fork tube. An interconnecting portion, or support bridge, extends between the left and right fork legs. A central portion of the support bridge is coupled to a steering tube of the scooter and an intermediate portion of the support bridge extends between the central portion and each upper fork tube. Desirably, the left and right upper fork tubes and the support bridge are monolithically formed. Preferably, an upper end portion of each fork leg extends to a height above the central portion of the support bridge.

Abstract: An electrically-powered scooter including a front wheel, a rear wheel and a frame assembly. A handlebar assembly and a seat assembly are supported by the frame assembly. The frame assembly includes a left frame rail and a right frame rail spaced laterally from one another and extending between the handle bar assembly and the seat assembly. A battery support extends between the left and the right frame rails at a position intermediate the handle bar assembly and the seat assembly. A battery is supported by the battery support. In one arrangement, the battery support includes an enclosure defining a battery storage chamber. The enclosure includes a guide member configured to engage a guide recess of the battery to guide the battery into the battery storage chamber. In another arrangement, the battery may include a recharging port, an axis of which defines an oblique angle with an axis of the battery.

Abstract: A front suspension fork assembly suitable for use with a scooter-type vehicle. The front fork assembly is rotatably supported by a frame of the scooter and supports a front wheel of the scooter on its lower end. Desirably, the front fork assembly includes right and left fork legs extending along opposing sides of the front wheel. Each fork leg includes an upper fork tube telescopically engaged with a lower fork tube. An interconnecting portion, or support bridge, extends between the left and right fork legs. A central portion of the support bridge is coupled to a steering tube of the scooter and an intermediate portion of the support bridge extends between the central portion and each upper fork tube. Desirably, the left and right upper fork tubes and the support bridge are monolithically formed. Preferably, an upper end portion of each fork leg extends to a height above the central portion of the support bridge.