摘要:
A battery control system connected to a battery, which controls charge/discharge at the battery, includes: a current detection unit that measures a current value by detecting a charge/discharge current flowing through the battery; a voltage detection unit that detects a voltage at the battery; a temperature detection unit that detects a temperature at the battery; a temperature history recording unit that records temperature history pertaining to the temperature detected by the temperature detection unit; and a charge/discharge restriction unit that restricts the charge/discharge current in a low-temperature state based upon the temperature history recorded by the temperature history recording unit.
摘要:
A battery control system connected to a battery, which controls charge/discharge at the battery, includes: a current detection unit that measures a current value by detecting a charge/discharge current flowing through the battery; a voltage detection unit that detects a voltage at the battery; a temperature detection unit that detects a temperature at the battery; an effective current value calculation unit that calculates, based upon the current value measured by the current detection unit, an effective current value in a predetermined time window; and a charge/discharge restriction unit that imposes a first charge/discharge restriction so as to restrict the charge/discharge current based upon the effective current value calculated by the effective current value calculation unit.
摘要:
An electricity storage module in which a plurality of battery cells are electrically connected via conductive members, wherein: each of the conductive members has a pair of electrode connecting parts that are welded to respective electrode terminals of a pair of adjacent battery cells, a base part that is connected to the pair of electrode connecting parts via a pair of elastically deformable parts, and a voltage detecting terminal that is connected to the base part and detects a terminal voltage of a battery cell.
摘要:
A battery control system connected to a battery equipped with an explosion-proofing mechanism for cutting off an electric current when the battery enters an overcharge state, which controls conditions at the battery, includes: a cell voltage detection unit that detects a cell voltage at the battery; a storage unit that stores information pertaining to the conditions at the battery; an overcharge decision-making unit that makes a decision as to whether or not the battery is in an overcharge state; a storage control unit that engages the storage unit to store overcharge information pertaining to the overcharge state at the battery when the overcharge decision-making unit decides that the battery is in an overcharge state; and an explosion-proofing decision-making unit that decides that the explosion-proofing mechanism in the battery has actuated if the overcharge information is stored in the storage unit at startup of the battery control system and the cell voltage detected by the cell voltage detection unit is lower than a predetermined lower limit value.
摘要:
To carry out battery temperature control, battery input/output control, and cell module clogging diagnostics while keeping the number of temperature sensors installed to a minimum A battery pack cooling system in which cell modules (31), (32), (33) configured from a plurality of cell cans (31a) are set in an internal space of a battery pack case (1) so as to have a cooling passage, thereby cooling the cell modules (31), (32), (33) by cooling air flowing in the cooling passage. In this battery pack cooling system, the cooling passage is configured comprising a cooling air inlet passage (51), a cooling air exhaust passage (71), and a plurality of cooling branch passages (61), (62), (63) disposed to link the cooling air inlet passage (51) and the cooling air exhaust passage (71) in parallel. The cell modules (31), (32), (33) are installed respectively in the plurality of cooling branch passages (61), (62), (63). Second thermistors (12L), (12h) are respectively installed in an upstream position and a downstream position of one second cell module (32) of the plurality of cell modules (31), (32), (33)
摘要:
An electricity storage device including: a plurality of electricity storage modules, each including an electricity storage module case, a plurality of electricity storage cells housed in the electricity storage module case, and external terminals of positive and negative electrodes; an electricity storage case in which the plurality of electricity storage modules are arranged and housed; a plurality of wire harnesses connected to the external terminals of the positive and negative electrodes of the electricity storage modules; and a vibration damping material provided in a space region between one surface of the electricity storage case and, among the plurality of wire harnesses, at least a wire harness including the longest length extending in an arrangement direction of the electricity storage modules, wherein the wire harness including the longest length extending in the arrangement direction of the electricity storage modules is biased toward a side of the electricity storage module case by the one surface of the electricity storage case, through the vibration damping material.
摘要:
There is provided a highly heat conductive piston ring for an internal combustion engine capable of exhibiting a gas seal function and a heat transfer function for a long period of time in a stable manner when used in an automobile gasoline engine having a high compression ratio. The highly heat conductive piston ring for an internal combustion engine is a piston ring for an internal combustion engine having an Mn-Cr steel as a base material, the Mn-Cr steel including C in the range of from 0.52 to 0.65 mass%, Si in the range of from 0.15 to 0.35 mass%, Mn in the range of from 0.60 to 1.00 mass%, Cr in the range of from 0.60 to 1.00 mass%, P in the range of 0.04 mass% or less, S in the range of 0.04 mass% or less, a slight amount of components (total content of Al, Ni, and Cu) in the range of from 0.05 to 3.0 mass%, and a remnant being Fe and unavoidable impurities.
摘要:
There is provided a battery cooling structure that integrates a battery pack with cooling passages and that avoids obstruction of cooling air flow due to blockage of the cooling passages or an air intake port. To this end, plural cooling passages (2a, 2b, 2c) for taking in cooling air into a battery pack (1) are formed on a surface of a cover plate (2) attachable to the battery pack (1). Additionally, connection passages (2d, 2e, 2f, 2g, 2h, 2i) that connect the plural cooling passages (2a, 2b, 2c) with one another to allow interchange of cooling air are formed in a direction intersecting with the plural cooling passages (2a, 2b, 2c) on the surface of the cover plate (2).