1138results about "Small-sized flat cells/batteries" patented technology

Embodiments described herein relate generally to electrochemical cells having semi-solid electrodes that are coated on only one side of a current collector. In some embodiments, an electrochemical cell includes a semi-solid positive electrode coated on only one side of a positive current collector and a semi-solid negative electrode coated on only one side of a negative current collector. A separator is disposed between the semi-solid positive electrode and the semi-solid negative electrode. At least one of the semi-solid positive electrode and the semi-solid negative electrode can have a thickness of at least about 250 μm.

Electrochemical cells and methods of making electrochemical cells are described herein. In some embodiments, an apparatus includes a multi-layer sheet for encasing an electrode material for an electrochemical cell. The multi-layer sheet including an outer layer, an intermediate layer that includes a conductive substrate, and an inner layer disposed on a portion of the conductive substrate. The intermediate layer is disposed between the outer layer and the inner layer. The inner layer defines an opening through which a conductive region of the intermediate layer is exposed such that the electrode material can be electrically connected to the conductive region. Thus, the intermediate layer can serve as a current collector for the electrochemical cell.

An example augmented-reality headset comprises a frame portion, a temple arm portion coupled with the frame portion, and a metal-encased battery cell having an exterior surface that defines a non-rectangular shape. The metal-encased battery cell is configured to be housed within the temple arm portion, and the non-rectangular shape of the exterior surface follows an interior shape of an internal surface of the temple arm portion. The augmented-reality headset also comprises one or more artificial-reality processing or presentation devices, wherein at least one of the one or more artificial-reality processing or presentation devices is configured to receive power from the metal-encased battery cell.

The present invention discloses a stack cell. The stack cell of the present invention includes an electrode stack; at least one fixing tape wrapped around the electrode stack to secure the electrode stack; and a step-leveling tape attached to the edge of the upper surface of the electrode stack to eliminate the step between the fixing tape and the upper surface of the electrode stack.

A gel electrolyte and a separator are provided between the positive electrode current collector and the negative electrode current collector. The plurality of positive electrode current collectors and the plurality of negative electrode current collectors are stacked such that surfaces of negative electrodes with which active material layers are not coated or surfaces of positive electrodes with which active material layers are not coated are in contact with each other.

The invention relates to a method of coupling a battery cell to a battery cell monitoring and control circuit, the method comprising the steps of: providing a battery cell (10) comprising a multilayer structure comprising two electrode layers (11, 12) separated by a separator layer (17) and two electrically conductive outer faces (13, 14) extending parallel to the layers of the multilayer structure; providing a microcircuit (MC) comprising two connection pads (21, 22) respectively formed on opposite faces or on the same face of the microcircuit, the microcircuit being inserted into a volume defined by two planes respectively comprising an electrically conductive outer face of the battery cell; an electrically conductive connection (25, 26) is formed between each connection pad of the microcircuit and a respective electrically conductive face of the battery cell.

Disclosed is a wearable device. The wearable device includes a substrate layer. The substrate layer is configured to support a battery array comprising a plurality of battery cells, wherein least a first battery cell is electrically coupled to a second battery cell using a conductive interconnect. The wearable device also includes an interface layer coupled to the substrate layer. The interface layer is electrically coupled the battery array via a translayer interconnect. The interface configured to adhere the substrate to a body and to provide electrical stimulation to the body.

A battery manufacturing apparatus includes a negative electrode notching device configured to assign a first electrode ID to individual notched electrodes; a first cutting device for separating individual negative electrodes assigned the first electrode ID; a positive electrode notching device configured to assign a second electrode ID to individual notched electrodes; a second cutting device for separating individual positive electrodes assigned the second electrode ID; a stacking device configured to stack the individual positive electrodes and the individual negative electrodes with a separator therebetween; and a roll map creating device.

The present application discloses a battery cell, a secondary battery, and an electric device. The battery cell comprises a plurality of electrode sheets; each electrode sheet comprises a current collector and active substance coatings; the electrode sheet has a first region covered with the active substance coatings and a second region not covered with the active substance coatings; the first region is provided with a clearance notch; the second region forms a tab of the battery cell; among the plurality of stacked electrode sheets, for two adjacent electrode sheets, the first region of one electrode sheet is provided with a clearance notch so as to expose the second region of the other electrode sheet; the width of the electrode sheet is W mm, the area of the clearance notch is S1 mm2, the area of the second region is S2 mm2, and the thickness of the battery cell is H; when H is greater than 7 mm, S1+S2＜A*W is satisfied, and A is 3.6 mm; or, when H is less than or equal to 7 mm, S1+S2＜B*W is satisfied, and B is 1.6 mm. By means of such design, when a bare battery cell is formed by stacking, the tabs are accommodated in the main body region of the bare battery cell, and there is no need to perform multi-tab transfer welding, thereby improving space utilization; moreover, by setting the maximum value of S1+S2, it is ensured that the overall energy density of the battery cell is increased.

Various examples disclosed relate to a method of manufacturing a mechanically stabilized material that includes a nanostructure. The method includes providing a curable material disposed on a substrate. The curable material includes inorganic nanoparticles. The method further includes exposing the curable material and the substrate to pulsed electromagnetic radiation to form the mechanically stabilized material.

A battery pack includes a housing, a cell assembly, a cell support member, a first sensor, and a second sensor. The cell assembly is disposed in the housing; and the cell support member is at least configured to support the cell assembly. The cell assembly includes a plurality of cells which are sheet-shaped, the plurality of cells are stacked, and a cell among the plurality of cells includes an encapsulation member configured to encapsulate the cell and a tab disposed at at least one end of the cell assembly and protruding from the cell. The first sensor is configured to detect a temperature of the cell and is disposed on a side of the tab facing towards the cell support member. The second sensor is configured to detect a parameter related to leakage of the cell and is disposed in the cell assembly.

A watchband for a smart watch is provided. The watchband for a smart watch includes: a first band having at least one positioning hole; and a second band including a cover member, a flexible battery, and a position-fixing fastening member, wherein an exterior material of the flexible battery can include a first portion for packing the electrode assembly together with the electrolyte, and a second portion extended from the first portion by a predetermined and to which the position-fixing fastening member is coupled.

Flexible electronic devices may be provided. A flexible electronic device may include a flexible display, a flexible housing and one or more flexible internal components configured to allow the flexible electronic device to be deformed. Flexible displays may include flexible display layers, flexible touch-sensitive layers, and flexible display cover layers. The flexible housing may be a multi-stable flexible housing having one or more stable positions. The flexible housing may include a configurable support structure that, when engaged, provides a rigid support structure for the flexible housing. The flexible internal components may include flexible batteries, flexible printed circuits or other flexible components. A flexible battery may include flexible and rigid portions or may include a lubricious separator layer that provides flexibility for the flexible battery. A flexible printed circuit may include flexible and rigid portions or openings that allow some rigid portions to flex with respect to other rigid portions.

A battery cell and an electric device. The battery cell comprises a positive electrode sheet, a negative electrode sheet, a positive tab, and a negative tab of an electrode assembly. The positive electrode sheet comprises a positive electrode active substance region, and the negative electrode sheet comprises a negative electrode active substance region. In the width direction of the positive electrode sheet, the positive electrode active substance region is provided with a first end and a second end opposite to each other, and the positive tab protrudes from the first end. In the width direction of the negative electrode sheet, the negative electrode active substance region is provided with a first area beyond the first end and a second area beyond the second end. The negative tab is connected to the first area, the width of the first area is E, the width of the second area is C, and E is greater than C. Therefore, more space can be reserved for an electrolyte solution on the tab side of the negative electrode active substance region and the tab side of the positive electrode active substance region of a housing without increasing the volume of the housing, so that the positive electrode sheet and the negative electrode sheet can be fully infiltrated, enabling the battery cell to have good cycling performance and a high volumetric energy density.

This application relates to batteries with an asymmetric design. At least some batteries described herein include two sections having different shapes and / or sizes, thus having different volumes. Having a battery formed with a relatively larger sections allows for several advantages. For example, the larger section can accommodate bending of a tab used to connect several electrodes together. Additionally, with the larger section providing space for the bent tab, the electrodes can be extended in, for example, the relatively smaller section. As a result, the battery can provide additional energy storage.

Flexible electronic devices may be provided. A flexible electronic device may include a flexible display, a flexible housing and one or more flexible internal components configured to allow the flexible electronic device to be deformed. Flexible displays may include flexible display layers, flexible touch-sensitive layers, and flexible display cover layers. The flexible housing may be a multi-stable flexible housing having one or more stable positions. The flexible housing may include a configurable support structure that, when engaged, provides a rigid support structure for the flexible housing. The flexible internal components may include flexible batteries, flexible printed circuits or other flexible components. A flexible battery may include flexible and rigid portions or may include a lubricious separator layer that provides flexibility for the flexible battery. A flexible printed circuit may include flexible and rigid portions or openings that allow some rigid portions to flex with respect to other rigid portions.

An all-solid battery includes: a multilayer structure that includes a plurality of first electrodes and a plurality of second electrodes, and has a first side face and a second side face adjacent to each other, the plurality of first electrodes and the plurality of second electrodes being alternately stacked with solid electrolyte layers interposed between the plurality of first electrodes and the plurality of second electrodes; a first extraction part exposed on the first side face, the first extraction part being a part of the first electrode; a second extraction part exposed on the second side face, the second extraction part being a part of the second electrode; a first external electrode coupled to the first extraction part on the first side face; and a second external electrode coupled to the second extraction part on the second side face.

A method for manufacturing an electrode for a secondary battery comprises the steps of (a) preparing an electrode sheet comprising a current collector partitioned into a coating portion and a non-coating portion and having an insulating layer laminated on the non-coating portion; and (b) forming an electrode tab by notching the non-coating portion on which the insulating layer is laminated. The notching is performed using a laser having a pulse width of 100 ps to 10−6 ps. An electrode for a secondary battery and an electrode manufacturing system used in the method described above is also provided.

The present invention provides an electrode assembly including: a stack 100 formed by aligning and alternately stacking a plurality of electrodes 110 and a plurality of separators 120 in a first direction, and a wrapping film 200 surrounding and fused to the stack 100 to fix the plurality of electrodes 110 and the plurality of separators 120. Electrode tabs 112 of the plurality of electrodes 110 are disposed at one side or the other side of the stack 100 in a second direction intersecting with the first direction. The wrapping film 200 surrounds one side and the other side of the stack 100 in the first direction; and one side and the other side of the stack 100 in a third direction intersecting the first direction and the second direction, and is fused to at least the one side or the other side of the stack 100 in the first direction. Thus, deformation and damage of the separator 120, disruption of the alignment of the stack 100, and short circuit resulting therefrom may be prevented.

A battery and an electronic device are disclosed. The battery includes: a first bare cell portion and a second bare cell portion. The first bare cell portion has a first surface and a side surface connected to the first surface, the first surface is configured to face towards a same direction as that of an opening of a battery compartment of an electronic device when the battery is installed in the battery compartment, and the side face is configured to face towards an inner side surface of the battery compartment of the electronic device when the battery is installed in the battery compartment. The second bare cell portion is located on a side that the first surface faces, and an orthographic projection of the second bare cell portion on the first surface overlaps the first surface.

Disclosed herein is a high-strength battery case with improved crack resistance during molding and greater protection against external impact. The battery case may be composed a pouch-type battery case with a pouch film laminate body including a gas barrier layer, a base layer on one surface and a sealant layer on the other surface of the gas barrier layer. At least one cup portion of the battery case can have a recessed shape so as to accommodate an electrode assembly, and a terrace positioned in at least a portion of the circumference of the cup portion. The cup portion may includes a bottom surface and a plurality of circumference surfaces surrounding the bottom surface. A thickness of the gas barrier layer is may be greater than 30 μm at a corner at which the bottom surface comes in in contact with a pair of circumferences adjacent to each other.

The invention discloses a secondary battery and an electronic device. The secondary battery includes a first case, a second case, and an electrode assembly. The first shell comprises a first part and a second part, and the second part is arranged on the edge of the first part in a surrounding mode. The second shell comprises a third part and a fourth part, and the fourth part surrounds the edge of the third part; the second shell and the first shell are mutually covered, and the second shell and the first shell are in insulated connection. The electrode assembly comprises a plurality of first pole pieces and a plurality of second pole pieces, and the first pole piece located on the outermost side of the electrode assembly is a first sub-pole piece; and the second pole piece positioned on the outermost side of the electrode assembly is a second sub-pole piece. The first sub-pole piece comprises a first current collector, the first current collector is provided with a first surface and a second surface which are opposite, and the first surface is electrically connected with the first part; the second sub-pole piece comprises a second current collector, the second current collector is provided with a third face and a fourth face which are opposite, and the third face is electrically connected with the third part. According to the scheme, the size of the secondary battery is reduced, and the volume energy density of the secondary battery is improved.

The present invention provides a method for deactivating a pair of outermost negative electrodes disposed at the uppermost end and the lowermost end of an electrode assembly including a plurality of positive electrodes, a plurality of negative electrodes, and a plurality of separators, respectively, the method for deactivating the outermost layer negative electrode includes: a deactivating step of forming a deactivating region having a predetermined width (w) along an edge of one side of the outermost layer negative electrode; the width (w) is determined on the basis of the horizontal length of the outermost negative electrode, the vertical length of the outermost negative electrode, and the number of individual cells in the electrode assembly consisting of the separator, the negative electrode, the separator, and the positive electrode, whereby a clear guidance can be provided for the deactivation operation of the outermost negative electrode of the electrode assembly.

Discussed is a lamination apparatus for a secondary battery. The lamination apparatus for the secondary battery includes: an electrode transfer part configured to transfer at least one or more electrodes; a separator transfer part configured to transfer at least one or more separators; a combination part configured to combine and transfer the electrodes and the separators that are to be alternately disposed; and a position correction part configured to correct a position of an uppermost electrode disposed at an uppermost side among combined electrodes and the separators to align the position of the electrode with a set position of the separator among the combined electrodes and separators.

A cell stack assembly, including: a plurality of stacked battery cells, each including an electrode assembly; a laminate exterior packaging that covers the electrode assembly and encloses the electrode assembly internally; and a fixing tape, including at least one of an inner fixing tape wound in a peripheral direction onto an outer peripheral face of the electrode assembly at an inner side of the laminate exterior packaging, or an outer fixing tape wound in a peripheral direction onto an outer peripheral face of the laminate exterior packaging, wherein: taking a direction in which the plurality of battery cells are stacked as a stacking direction, the fixing tape is wound such that winding positions of the fixing tape do not overlap in the stacking direction for at least one adjacent pair of the battery cells.

The present invention relates to a method for manufacturing a secondary battery. The method for manufacturing the secondary battery comprises: an electrode preparation step of preparing electrodes, each of which is provided with a coating portion coated with an electrode active material and a non-coating portion that is not coated with the electrode active material; an electrode assembly manufacturing step of alternately stacking the electrodes and separators to manufacture an electrode assembly, wherein the electrodes are stacked so that the non-coating portions overlap each other; a non-coating portion bonding step of bonding the non-coating portions to each other; a display part formation step of forming a display part for setting a cutting point on a surface of the bonded non-coating portion of each of the electrodes; and an electrode tab manufacturing step of cutting the bonded non-coating portion adjacent to the display part to manufacture an electrode tab.

An electrode assembly according to an embodiment of the present invention may be provided by alternately stacking elenglisctrodes and separators in a predetermined stacking direction, wherein, when an electrode, which is disposed at the outermost side, of the electrodes is defined as the outermost electrode, and a separator, which is disposed at the outermost side, of the separators is defined as the outermost separator, a distal end portion of the outermost separator may be provided to press a distal end portion of the outermost electrode inward in the stacking direction.

The present disclosure relates to a battery pack manufacturing device and a method of manufacturing a battery pack, and a technical object to be achieved is to provide a battery pack manufacturing device which includes a core molding jig having a plurality of molding parts on which a core pack is seated to minimize a melting cycle, thereby increasing productivity and reducing a mold cost by standardizing the core molding jig, and a method of manufacturing a battery pack. To this end, a battery pack manufacturing device includes a core molding jig including a molding part on which a core pack of which a bare cell and a protection circuit part are coupled is seated, a mold part which fixes the core molding jig, and an injection part which is provided at the mold part and performs a hot-melting process on the molding part to form a resin molding portion on the core pack, wherein the molding part is formed as a plurality of molding parts so that a plurality of core packs are seated on the plurality of molding parts.

To provide a rechargeable battery suitable for personal digital assistants or wearable devices. , novel electronic devices having various external shapes, and secondary shapes suitable for those shapes We provide batteries. [Solution] The film has recesses or protrusions that relieve the stress generated when an external force is applied. The secondary battery is sealed using a film. The film is press-formed, for example, E The embossing process creates a pattern composed of recessed or raised areas.

An electrode assembly, in which positive electrodes, separators, and negative electrodes are repeatedly stacked, and a positive electrode tab, through which the positive electrodes are connected to each other, and a negative electrode tab, through which the negative electrodes are connected to each other, are provided, according to the present invention comprises: a heat transfer layer made of a material having thermal conductivity greater than that of the separator and stacked between the positive electrode and the separator or between the negative electrode and the separator to disperse heat generated at a relatively high temperature point to a relatively low temperature point. According to the present invention, the heat generated at the relatively high temperature point may be dispersed to the relatively low temperature point to reduce the temperature deviation within the electrode assembly.