Patent application number | Description | Published |
20110304984 | BATTERY ASSEMBLY FOR BATTERY POWERED PORTABLE DEVICES - A battery assembly includes at least a plurality of battery cells that includes at least a first and a second battery cell each attached to a distributed battery monitoring unit, the second battery cell being associated with an external circuit, the second battery cell connected to a battery management unit (BMU) by way of a pre-formed battery contact shaped to accommodate the external circuit. The plurality of battery cells are electrically connected to at least the BMU such that each of the plurality of battery cells are substantially aligned with each other thereby preserving a battery profile corresponding to unconnected battery cells. | 12-15-2011 |
20130009604 | USING REFERENCE ELECTRODES TO MANAGE BATTERIES FOR PORTABLE ELECTRONIC DEVICES - The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system uses a reference electrode in the battery to monitor an anode potential of an anode in the battery during charging of the battery in the portable electronic device. If the anode potential falls below an anode potential threshold, the system modifies a charging technique for the battery to extend a cycle life of the battery. For example, the system may reduce a charge current of the battery if the anode potential falls below the anode potential threshold to prevent degradation caused by a negative anode potential during charging of the battery. | 01-10-2013 |
20130095357 | INCREASING THE STIFFNESS OF BATTERY CELLS FOR PORTABLE ELECTRONIC DEVICES - The disclosed embodiments relate to the manufacture of a battery cell. The battery cell includes a set of layers including a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a pouch enclosing the layers, wherein the pouch is flexible. The layers may be wound to create a jelly roll prior to sealing the layers in the flexible pouch. The stiffness of the battery cell may be increased by applying a pressure of at least 0.13 kilogram-force (kgf) per square millimeter and a temperature of about 85° C. to the layers. | 04-18-2013 |
20130115500 | BATTERY ASSEMBLY FOR BATTERY POWERED PORTABLE DEVICES - A battery assembly includes at least a plurality of battery cells that includes at least a first and a second battery cell each attached to a distributed battery monitoring unit, the second battery cell being associated with an external circuit, the second battery cell connected to a battery management unit (BMU) by way of a pre-formed battery contact shaped to accommodate the external circuit. The plurality of battery cells are electrically connected to at least the BMU such that each of the plurality of battery cells are substantially aligned with each other thereby preserving a battery profile corresponding to unconnected battery cells. | 05-09-2013 |
20130330585 | MECHANICAL SUPPORTS FOR IMPROVING RESISTANCE TO MECHANICAL STRESS IN BATTERY CELLS - The disclosed embodiments provide a battery cell. The battery cell includes a set of layers including a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a pouch enclosing the layers, wherein the pouch is flexible. The resistance of the battery cell to mechanical stress may be improved by removing material from one or more of the layers to form one or more apertures within the battery cell and placing a mechanical support in each of the apertures. | 12-12-2013 |
20140019789 | MONITORING A BATTERY IN AN ELECTRONIC DEVICE - A method and apparatus are described for monitoring a battery in an electronic device. In the described embodiments, a discharge current pulse is applied to a battery and the voltage change of the battery due to the discharge current pulse is determined. The impedance of the battery is then determined based on the voltage change and the discharge current pulse. An alert is then selectively generated based on the impedance. | 01-16-2014 |
20140065457 | MULTIPLE ELECTRODE SUBSTRATE THICKNESSES IN BATTERY CELLS FOR PORTABLE ELECTRONIC DEVICES - The disclosed embodiments provide a battery cell. The battery cell includes an electrode containing an active material and a continuous substrate. The continuous substrate includes a first thickness to maintain a tensile strength of the continuous substrate and a second thickness that is less than the first thickness to accommodate the active material. The first and second thicknesses may thus improve the energy density and/or rate capability of the battery cell without producing manufacturing defects associated with the use of thinner electrode substrates in battery cells. | 03-06-2014 |
20140109397 | HEATED FOLDING OF SEALS IN BATTERY CELLS - The disclosed embodiments relate to the manufacture of a battery cell. The battery cell includes a set of layers including a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a pouch enclosing the layers, wherein the pouch is flexible. The layers may be wound to create a jelly roll and/or stacked prior to sealing the layers in the flexible pouch. A side fold is also formed in the pouch by producing a target temperature in the range of 55° C. to 75° C. at a side seal of the pouch prior to folding the side seal against the battery cell. | 04-24-2014 |
20140272528 | MANUFACTURING TECHNIQUES USING BINDER COATINGS IN THREE-DIMENSIONAL STACKED-CELL BATTERIES - The disclosed embodiments relate to the manufacture of a battery cell. The battery cell includes a first set of layers including a cathode with an active coating, a separator, and an anode with an active coating. The separator may include a ceramic coating and a binder coating over the ceramic coating. During manufacturing of the battery cell, the layers are stacked, and the binder coating is used to laminate the first set of layers within the first sub-cell by applying at least one of pressure and temperature to the first set of layers. | 09-18-2014 |
20140272529 | MANUFACTURING TECHNIQUES USING UNIFORM PRESSURE TO FORM THREE-DIMENSIONAL STACKED-CELL BATTERIES - The disclosed embodiments relate to the manufacture of a battery cell. The battery cell includes a first set of layers including a cathode with an active coating, a separator, and an anode with an active coating. The separator may include a ceramic coating and a binder coating over the ceramic coating. During manufacturing of the battery cell, the layers are stacked, and the binder coating is used to laminate the first set of layers within the first sub-cell by applying at least one of pressure and temperature to the first set of layers. In addition, uniform pressure is applied to the cell stack to laminate the first and second sets of layers. | 09-18-2014 |
20140272543 | MANUFACTURING TECHNIQUES USING FIDUCIALS IN THREE-DIMENSIONAL STACKED-CELL BATTERIES - The disclosed embodiments relate to the manufacture of a battery cell. The battery cell includes a first set of layers including a cathode with an active coating, a separator, and an anode with an active coating. The separator may include a ceramic coating and a binder coating over the ceramic coating. During manufacturing of the battery cell, the layers are stacked, and the binder coating is used to laminate the first set of layers within the first sub-cell by applying at least one of pressure and temperature to the first set of layers. One or more fiducials are also disposed on each electrode from a set of electrodes for the battery cell and/or a fixture for the electrodes. The one or more fiducials may be used to align the electrodes during stacking of the set of electrodes. | 09-18-2014 |