Patent application number | Description | Published |
20090029193 | CID retention device for Li-ion cell - A low pressure current interrupt device (CID) activates at a minimal threshold internal gauge pressure in a range of, for example, between about 4 kg/cm | 01-29-2009 |
20090269654 | Prismatic Storage Battery Or Cell With Flexible Recessed Portion - A battery includes a cell casing that has recessed portion on a major surface of the casing, the recessed portion being substantially planar and bordering a remainder of the major surface at ridge portions on at least three sides of the recessed portion, whereby the recessed portion, the ridge portions, and the remainder of the major surface cooperate under an increase of gauge pressure to cause a plane defined by a boundary between the ridge portions and the remainder of the major surface to move. | 10-29-2009 |
20100108291 | Method and apparatus for embedded battery cells and thermal management - Battery cells are embedded in a device to control thermal management of the device. One embodiment includes an embedded battery arrangement that improves thermal management of a portable computer, such as heat transfer and dissipation from heat generating components of the portable computer (including, for example, central processing unit chips or graphics processing unit chips). In one specific embodiment, a printed circuit board is mounted to a battery pack to cause improved radiation of heat from heat generating components of the portable computer to outside of the portable computer housing. In another embodiment, battery cells are distributed within the housing of a portable computer that improves thermal management. | 05-06-2010 |
20100143770 | CID Retention Device For Li-ion Cell - A low pressure current interrupt device (CID) activates at a minimal threshold internal gauge pressure in a range of, for example, between about 4 kg/cm | 06-10-2010 |
20100178539 | Modular CID Assembly for a Lithium Ion Battery - A modular current interrupt device includes an electrically-conductive rupture disc, an electrically-conductive pressure disc attached to the rupture disc to form an electrical pathway. An electrically-insulating ring partitions a perimeter of the rupture disc from a perimeter of the pressure disc, and a seating element secures the electrically-insulated ring to the pressure disc. At least one of the rupture disc and electrically-insulating ring defines a conduit, whereby exposure of one side of the pressure disc to sufficient force through the conduit causes the pressure disc to separate from the rupture disc to thereby sever the electrical pathway. A low pressure current interrupt device (CID) activates at a minimal threshold internal gauge pressure in a range of, for example, between about 4 kg/cm | 07-15-2010 |
20100289457 | ENERGY EFFICIENT AND FAST CHARGE MODES OF A RECHARGEABLE BATTERY - A method of providing power to an electronic device in an energy-efficient manner includes transitioning between power states corresponding to charging and discharging a battery. The state of charge of the battery is detected. Upon detecting a high threshold state of charge, an external power source such as an AC-to-DC adapter is disabled, and the battery to provides primary power to the electronic device. Upon a low threshold state of charge, the AC-to-DC adapter is controlled to provide a high current output to charge the battery and provide primary power to the electronic device. The power states, when cycled over time based on the state of the battery, provide for an energy-efficient method of powering the electronic device. | 11-18-2010 |
20110024396 | CID Retention Device for Li-Ion Cell - A low pressure current interrupt device (CID) activates at a minimal threshold internal gauge pressure in a range of, for example, between about 4 kg/cm | 02-03-2011 |
20110115434 | ELECTRONICS WITH MULTIPLE CHARGE RATE - One or more buttons, located either on a battery pack or on an electronic device powered by the battery pack, that allow the user to charge the battery of a portable device faster than normal. Electronic circuitry is provided for activating the charge mode choices. | 05-19-2011 |
20110189512 | CID Retention Device for Li-Ion Cell - A low pressure current interrupt device (CID) activates at a minimal threshold internal gauge pressure in a range of, for example, between about 4 kg/cm | 08-04-2011 |
20120129019 | CID Retention Device For Li-ion Cell - A low pressure current interrupt device (CID) activates at a minimal threshold internal gauge pressure. Preferably, the CID includes a first conductive plate and a second conductive plate in electrical communication with the first conductive plate, the electrical communication between the first and the second conductive plates being interrupted at the minimal threshold internal gauge pressure. The first conductive plate can include a frustum having a first end and a second end, a base extending radially from a perimeter of the first end of the frustum, and an essentially planar cap sealing the second end of the frustum. The first end has a broader diameter than the second end, and the second conductive plate is in electrical contact with the essentially planar cap through a weld. | 05-24-2012 |
20130017421 | Battery Pack Safety Techniques - A battery system monitors the status of a battery and ensures safe conditions under a range of events adversely affecting the safety of the battery cells, the battery pack or enclosure, or a vehicle housing the battery. In response to the safety event, the battery system provides one or more responses to secure the battery, disconnect the battery, extinguish a fire, or maintain a safe temperature. Upon detecting the safety event, the a controller activates the safety device accordingly to ensure safe conditions. | 01-17-2013 |
20130278218 | METHOD AND SYSTEM FOR BALANCING CELLS WITH VARIABLE BYPASS CURRENT - A circuit for balancing battery cells includes a plurality of resistors configured in parallel with the battery cells, and a plurality of switches configured in series with the resistors. A control circuit causes the switches to balance the battery cells based on detected voltage of the battery cells and based on past operation of the cells. | 10-24-2013 |
20140186666 | Modular CID Assembly for a Lithium Ion Battery - A modular current interrupt device includes an electrically-conductive rupture disc, an electrically-conductive pressure disc attached to the rupture disc to form an electrical pathway. An electrically-insulating ring partitions a perimeter of the rupture disc from a perimeter of the pressure disc, and a seating element secures the electrically-insulated ring to the pressure disc. At least one of the rupture disc and electrically-insulating ring defines a conduit, whereby exposure of one side of the pressure disc to sufficient force through the conduit causes the pressure disc to separate from the rupture disc to thereby sever the electrical pathway. A low pressure current interrupt device (CID) activates at a minimal threshold internal gauge pressure in a range of, for example, between about 4 kg/cm | 07-03-2014 |
20140335398 | DEVICE AND METHOD TO PREVENT CELL-TO-CELL THERMAL RUNAWAY PROPAGATION IN A BATTERY PACK - A battery block includes a first prismatic battery cell defining a first substantially planar surface, a second prismatic battery cell defining a second substantially planar surface, the second substantially planar surface being in opposing relation to the first substantially planar surface, and a thermal barrier suspended between the first and second substantially planar surfaces, wherein the thermal barrier is spaced from both the first and second substantially planar surfaces. | 11-13-2014 |