Abstract: A robot including an extendable device capable of extending and contracting in at least one direction, at least two end effectors that are respectively connected to at least two end portions of the extendable device, and a control unit capable of causing the extendable device to extend and contract, wherein each of the at least two end effectors includes at least one grasping unit that extends outward, and the robot is operable to grasp a target by the at least two end effectors by the control unit causing the extendable device to extend or contract.

Abstract: A battery pack includes a battery chamber (3) which houses a plurality of battery cells (2), a cooling air chamber (4) provided below the battery chamber (3), and a fan (5) which supplies cooling air (A) into the cooling air chamber (4) at a static pressure not less than atmospheric pressure. On a bottom part of the battery chamber (3), there is provided a supporting part (6) which supports the battery cells (2) while maintaining horizontal gaps therebetween, and air inlet holes (7) which guide cooling air (A) upward are provided in the bottom part of the battery chamber (3) at positions corresponding to the gaps between the battery cells (2).

Abstract: A battery system comprises a first battery cell and a first management unit which is connected in one-to-one correspondence to the first battery cell. The first management unit comprises a first parameter acquiring unit, a first calculating unit, and a first storage unit. The first parameter acquiring unit acquires a power consumption parameter of the first battery cell. The first calculating unit calculates a power consumption state value of the first battery cell on the basis of the power consumption parameter acquired by the first parameter acquiring unit. The first storage unit stores the power consumption state value calculated by the first calculating unit.

Abstract: A battery pack includes a battery chamber (3) which houses a plurality of battery cells (2), a cooling air chamber (4) provided below the battery chamber (3), and a fan (5) which supplies cooling air (A) into the cooling air chamber (4) at a static pressure not less than atmospheric pressure. On a bottom part of the battery chamber (3), there is provided a supporting part (6) which supports the battery cells (2) while maintaining horizontal gaps therebetween, and air inlet holes (7) which guide cooling air (A) upward are provided in the bottom part of the battery chamber (3) at positions corresponding to the gaps between the battery cells (2).

Abstract: The management method for charging secondary batteries of work vehicles includes: a step of acquiring remaining battery levels of secondary batteries which supply powers respectively to work vehicles; a step of calculating estimated power consumptions of the work vehicles for a predetermined time from the current time; a step of calculating an index value for determining a priority order for replacing the secondary batteries of the work vehicles by referring to differences between the remaining battery levels of the secondary batteries and the estimated power consumptions; and a step of outputting a return command to one of the work vehicles based on the index value and the acceptable charge amounts by which the secondary batteries can be respectively charged.

Abstract: A battery system comprises a first battery cell and a first management unit which is connected in one-to-one correspondence to the first battery cell. The first management unit comprises a first parameter acquiring unit, a first calculating unit, and a first storage unit. The first parameter acquiring unit acquires a power consumption parameter of the first battery cell. The first calculating unit calculates a power consumption state value of the first battery cell on the basis of the power consumption parameter acquired by the first parameter acquiring unit. The first storage unit stores the power consumption state value calculated by the first calculating unit.