A battery system with a passive thermal management system is formed from a plurality of battery cells arranged on a printed circuit board assembly. In some cases, the printed circuit board assembly may include a flexible printed circuit board that is folded along an axis forming an upper and lower portion of the printed circuit board assembly. The thermal management system may include fire-blocking foam members individually attached to each battery cell. The battery cells may be arranged in a grid-like pattern to allow for a spacing arrangement between the battery cells to keep a failing battery cell from negatively affecting an adjacent battery cell. In addition, the flexible printed circuit card may include a fuse for each battery cell to shut off any current flow to a faulty battery cell if it begins to fail causing current flow to exceed beyond a predetermined current limit. The battery system may be a conformal wearable battery.

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.

According to an embodiment, an electronic device includes a processor, a frame disposed at a rear side of the processor, a cylindrical battery disposed at a rear side of the frame, a composite sheet having at least one heat insulating member surrounding an outer peripheral surface of the cylindrical battery and at least one thermally conductive member surrounding the heat insulating member, and a heat sink disposed at a rear side of the composite sheet.

A charger including a housing including a front wall, a rear wall, a top wall, a bottom wall, a first side wall, and a second side wall, an interface configured to engage a battery pack, and an air conditioning assembly coupled within the housing adjacent the interface. The air conditioning system is operable to suck an ambient air flow into the housing from outside the housing, reduce a temperature of the air flow to create a cooling air flow, and guide the cooling air flow to the battery pack interface.

A charger including a housing including a front wall, a rear wall, a top wall, a bottom wall, a first side wall, and a second side wall, an interface configured to engage a battery pack, and an air conditioning assembly coupled within the housing adjacent the interface. The air conditioning system is operable to suck an ambient air flow into the housing from outside the housing, reduce a temperature of the air flow to create a cooling air flow, and guide the cooling air flow to the battery pack interface.

An aerosol-generating system provided, including an electrically operated aerosol-generating element; a first electrochemical energy storage device (EESD) configured to supply electrical power to the aerosol-generating element; and an EESD temperature control system including at least one temperature sensor positioned to sense a temperature of the first EESD and an electrical heater configured to heat the first EESD, wherein the EESD temperature control system operates the electrical heater dependent on an output from the at least one temperature sensor.

An aerosol-generating system provided, including an electrically operated aerosol-generating element; a first electrochemical energy storage device (EESD) configured to supply electrical power to the aerosol-generating element; and an EESD temperature control system including at least one temperature sensor positioned to sense a temperature of the first EESD and an electrical heater configured to heat the first EESD, wherein the EESD temperature control system operates the electrical heater dependent on an output from the at least one temperature sensor.

The present invention relates to the technical field of energy storage power supply and discloses a fanless portable energy storage power supply, comprising an upper shell, wherein a battery is arranged inside the upper shell; the lower part of the upper shell is fixedly connected with a lower shell; the lower inner wall of the upper shell is fixedly connected with a first fixing plate; the inner wall of the fixing frame is fixedly connected with a filter screen; the bottom of the fixing frame is fixedly connected with a bottom plate; and the bottom plate is connected with the bottom surface of the lower shell through bolts, so as to ventilate and dissipate heat, facilitate the separation and combination of batteries and circuit boards and save resources.

One embodiment provides an electronic device, including: a battery pack stack comprising at least two battery packs; wherein the battery pack stack comprises at least one cumulative heat reducing component positioned between the at least two battery packs. Other aspects are described and claimed.