A battery cooling control system includes an electric water pump (EWP) that circulates coolant to cool a battery, a chiller that cools the coolant, and a controller electrically connected with the EWP and the chiller. The controller enters a battery cooling control mode to monitor a current temperature of the battery, when battery charging is scheduled, determines the cooling control mode based on the current temperature of the battery, and controls cooling using at least one of the EWP or the chiller depending on the determined cooling control mode.

A battery pack assembly or enclosure comprises one or more batteries having an electrochemical cell and an enclosure having at least an outer wall configured to create a sealed volume of space substantially around the batteries. An atmosphere of the volume of space comprises gas having a thermal conductivity less than 0.018 watts per meter per degree Celsius. This atmosphere of gas provides an insulative layer between the outer wall of the enclosure and the batteries. With this insulative layer, the battery pack assembly can be subjected to autoclaving without damaging the batteries. The battery pack assembly can be used to power surgical tools or other devices that are subjected to autoclaving.

A battery pack assembly or enclosure comprises one or more batteries having an electrochemical cell and an enclosure having at least an outer wall configured to create a sealed volume of space substantially around the batteries. An atmosphere of the volume of space comprises gas having a thermal conductivity less than 0.018 watts per meter per degree Celsius. This atmosphere of gas provides an insulative layer between the outer wall of the enclosure and the batteries. With this insulative layer, the battery pack assembly can be subjected to autoclaving without damaging the batteries. The battery pack assembly can be used to power surgical tools or other devices that are subjected to autoclaving.

The present invention relates to a battery pack, including: a battery pack housing; and a cell group arranged in the battery pack housing, the cell group including a plurality of electrically connected cells. The battery pack housing includes a housing upper portion and a housing lower portion arranged opposite to the housing upper portion. A first air vent is provided on the housing lower portion, and a second air vent is provided on the housing upper portion. A longitudinal direction of the cells is vertically arranged along an up-down direction of the battery pack housing. A heat dissipation channel in communication with the first air vent and the second air vent is formed in the battery pack. At least part of peripheral surfaces of the cells are arranged in the heat dissipation channel. The cells are uniformly cooled, and the heat dissipation effect of the battery pack is improved.

The present invention relates to a battery pack, including: a battery pack housing; and a cell group arranged in the battery pack housing, the cell group including a plurality of electrically connected cells. The battery pack housing includes a housing upper portion and a housing lower portion arranged opposite to the housing upper portion. A first air vent is provided on the housing lower portion, and a second air vent is provided on the housing upper portion. A longitudinal direction of the cells is vertically arranged along an up-down direction of the battery pack housing. A heat dissipation channel in communication with the first air vent and the second air vent is formed in the battery pack. At least part of peripheral surfaces of the cells are arranged in the heat dissipation channel. The cells are uniformly cooled, and the heat dissipation effect of the battery pack is improved.

Provided are a heat transfer suppression sheet having an excellent heat transfer prevention effect and excellent retainability of inorganic particles and shape retainability at a high temperature, and a battery pack in which the heat transfer suppression sheet is interposed between battery cells. The heat transfer suppression sheet (10) includes inorganic particles (20), first inorganic fibers (30), and second inorganic fibers (31). An average fiber diameter of the first inorganic fibers (30) is larger than an average fiber diameter of the second inorganic fibers (31). The first inorganic fibers (30) have a linear shape or a needle shape, and the second inorganic fibers (31) have a dendritic shape or a crimped shape.

A battery cell includes an electrode assembly; a case including an accommodation portion in which the electrode assembly is accommodated, and a sealed portion formed along at least a portion of a circumference of the accommodation portion; and a cooling member interposed between the accommodation portion and the sealed portion to transfer heat of the accommodation portion to the sealed portion. The cooling member is formed of a material having thermal conductivity of 2W/mK or higher.

A temperature-control apparatus has individual battery cells combined to form a module and arranged within a flow duct through which a temperature-control fluid flows in a main flow direction. Temperature regulation of a temperature-control apparatus is improved with a constant packing density of the battery cells despite small amounts of temperature-control fluid, with a flow guiding surface provided for each battery cell of a group. The flow guiding surface is spaced apart from a lateral section of the battery cell and has in each case an inlet section and an outlet section that are both substantially parallel to the lateral section. A diffuser section is arranged between the inlet section and the outlet section, the diffuser section-being set back with respect to the inlet section and the outlet section and with respect to the lateral section.

The application discloses a battery pack, vehicle and control method for alleviating spreading of thermal runaway of a battery pack. The battery pack includes: a plurality of secondary batteries, a housing of each of which includes a weakened portion, so that a heat flow resulting from thermal runaway of the secondary battery is able to break through the weakened portion to be discharged; a spray pipeline which is arranged corresponding to and at a spacing from weakened portions of the secondary batteries, at least a portion of the spray pipeline corresponding to the weakened portions being a breakthrough region which is able to form an opening under an action of the heat flow, a spray medium in the spray pipeline being sprayed to an abnormal secondary battery in thermal runaway via the opening; where a weight A of the sprayed spray medium is determined according to an equation (0.8A).sup.0.85×D/B≥2.6.

The application discloses a battery pack, vehicle and control method for alleviating spreading of thermal runaway of a battery pack. The battery pack includes: a plurality of secondary batteries, a housing of each of which includes a weakened portion, so that a heat flow resulting from thermal runaway of the secondary battery is able to break through the weakened portion to be discharged; a spray pipeline which is arranged corresponding to and at a spacing from weakened portions of the secondary batteries, at least a portion of the spray pipeline corresponding to the weakened portions being a breakthrough region which is able to form an opening under an action of the heat flow, a spray medium in the spray pipeline being sprayed to an abnormal secondary battery in thermal runaway via the opening; where a weight A of the sprayed spray medium is determined according to an equation (0.8A).sup.0.85×D/B≥2.6.