1287results about "Large-sized flat cells/batteries" patented technology

Apparatus, systems, and methods described herein relate to the manufacture and use of single pouch battery cells. In some embodiments, an electrochemical cell includes a first current collector coupled to a first portion of a pouch, the first current collector having a first electrode material disposed thereon, a second current collector coupled to a second portion of the pouch, the second current collector having a second electrode material disposed thereon, and a separator disposed between the first electrode material and the second electrode material. The first portion of the pouch is coupled to the second portion of the pouch to enclose the electrochemical 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.

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.

The system for deicing black ice includes a plurality of laser scanners that are arranged at intervals along a road, each laser scanner including a light source unit, a non-contact temperature sensor, and a control unit that controls an operation of radiating the laser to the area in charge, a weather sensor that measures a temperature and humidity, and an integrated controller that communicates with the plurality of laser scanners. The integrated controller determines whether the laser is radiated to the road surface based on at least one of the measured temperature and humidity, and when the laser radiation is determined, generates a control signal to activate at least one laser scanner, and the control unit determines a heating area, and generates a pulse signal to turn on / off a light source unit so that the laser is radiated in accordance with a shape and range of the heating area.

The present disclosure relates to a system for transferring and stacking electrodes in a battery stacking system. The system includes singulation device having a buffering device that feeds singulated electrodes to in-feed conveyors that transport the singulated electrodes to a transporting device having vacuum-assisted gripping shoes. The transporting device transfers the electrodes from the in-feed conveyors to the picking device equipped with gripping shoes to pick and place the battery materials into a stack on a stacking platform.

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.

A power storage device (10) comprises: a positive electrode (21) in which a positive electrode active material layer (21b) is formed on a first surface (21a1) of a positive electrode collector (21a); and a sealing part (24) that is adhered to the first surface (21a1) of the positive electrode (21). The sealing part (24) is formed from an acid-modified polyolefin resin. The positive electrode (21) comprises a carbon coating layer (M) that is provided at the portion of the first surface (21a1) of the positive electrode collector (21a) to which the sealing part (24) is adhered. The carbon coating layer (M) includes carbon particles and a coating layer binding agent. For the coating layer binding agent, the intensity ratio (PCOO / PCH) of a peak (PCOO) that represents a COO structure to a peak (PCH) that represents a CH structure on an IR absorption spectrum, as measured by infrared spectrophotometer, is 0.5-3.3.

The application discloses a battery monomer, a battery device and an electric equipment. The battery monomer comprises a shell assembly, a pole core arranged in the shell assembly, and a plurality of pole pieces. Two ends of each pole piece are respectively provided with a tab and a slitting edge. The plurality of pole pieces are divided into first pole pieces and second pole pieces with opposite polarities. The first pole pieces and the second pole pieces are arranged in sequence. The tabs of the first pole pieces and the tabs of the second pole pieces are located on different sides of the pole core. The tabs on the same side are electrically connected with a first connecting surface of a connecting piece. On the same side of the pole core, the distance between the first connecting surface and the slitting edge is L. The number of pole pieces with the same polarity is n. The number of bending layers of the tab is m. The thickness of the battery monomer is T. The thickness of the pole piece is t. The battery monomer satisfies the following relationship: 0.5 <= N = (L-5-0.1*T / 2) / (n*m*t) <= 15. Thus, the tab can have a good state after being bent, and the safety and reliability of the battery monomer are improved.

Embodiments of this application provide a cell, a battery, and an electric device. The cell includes a can and an electrode assembly. The can includes a first wall portion, where N vent mechanisms are arranged along a first direction on the first wall portion. The electrode assembly is accommodated in the can. The electrode assembly includes a body portion and a tab. The body portion includes a plurality of sub-regions. Along the first direction, the tab is arranged at at least one end of the body portion. The plurality of sub-regions are consecutively arranged. A length of the body portion is L, and a length of the sub-region is L1, L=L1×N, L≥400 mm, and N≥2. A projection of each vent mechanism along a thickness direction of the first wall portion is correspondingly located in one of the sub-regions. Each vent mechanism can discharge a discharge medium generated by thermal runaway in a corresponding sub-region, and the discharge medium generated by thermal runaway in each sub-region can be quickly discharged through a corresponding vent mechanism, which can effectively improve timeliness of venting of a cell, thereby improving reliability of the cell.

Apparatus, systems, and methods described herein relate to the manufacture and use of single pouch battery cells. In some embodiments, an electrochemical cell includes a first current collector coupled to a first portion of a pouch, the first current collector having a first electrode material disposed thereon, a second current collector coupled to a second portion of the pouch, the second current collector having a second electrode material disposed thereon, and a separator disposed between the first electrode material and the second electrode material. The first portion of the pouch is coupled to the second portion of the pouch to enclose the electrochemical cell.

An electrode stacking apparatus provided with a planar motor device (B) comprised of a flat plate-shaped stator (50) and a plurality of movers (40) able to move on a flat surface (51) of the stator in any direction along the flat surface (51) and able to rotate about a perpendicular axis of the flat surface (51) in a state magnetically floating from the flat surface (51). When stacking a new sheet-shaped electrode (1) held by an electrode conveyor device (A) arranged above the planar motor device (B) on a stacked electrode holder (60) of a mover (40), the mover (40) is made to move in synchronization with movement of the new sheet-shaped electrode (1) so that the new sheet-shaped electrode (1) continues to face the sheet-shaped electrode stacking position on the stacked electrode holder (60).

This secondary battery includes an insulating sheet (700) that covers an electrode assembly, the electrode assembly includes a first surface, the insulating sheet (700) includes a first region (R1) constituted of a vicinity of one end portion of the insulating sheet (700) and a second region (R2) constituted of a vicinity of the other end portion of the insulating sheet (700), the first region (R1) and the second region (R2) cover the first surface, and an overlapping region (OR) in which the second region (R2) overlaps with the first region (R1) is provided, in a width direction of the electrode assembly, the overlapping region (OR) includes a central region (CR) and an end-portion region (PR) located beside each of both sides of the central region (CR), and the central region (CR) is provided with a recess (710s) as a non-overlapping region that reduces an overlapping area of the overlapping region (OR).

A secondary battery and a preparation method therefor are described. The secondary battery comprises a first electrode sheet, a second electrode sheet, and an insulating support part, wherein the first electrode sheet and the second electrode sheet are alternately stacked in a first direction to form a stack; the first electrode sheet is provided with extension parts extending outwards compared with the second electrode sheet, gap parts being formed between adjacent extension parts in the first direction; and the insulating support part comprises filling parts and covering parts, the filling parts filling the gap parts, and the covering parts covering the ends of the extension parts. The secondary battery ensures high safety.

The application discloses a battery monomer, a battery device and an electric equipment. The battery monomer comprises a shell assembly and a pole core. The pole core is arranged in the shell assembly. The pole core comprises a plurality of pole pieces. Two ends of each pole piece are respectively provided with a pole lug and a slitting edge. The plurality of pole pieces are divided into first pole pieces and second pole pieces which are arranged in sequence and have opposite polarities. The pole lug of the first pole piece and the pole lug of the second pole piece are located at different sides of the pole core. The pole lugs located at the same side are electrically connected with a first connecting surface of a connecting piece through a transition piece. On the same side of the pole core, the distance between the first connecting surface and the slitting edge is L. The number of the pole pieces with the same polarity is n. The number of bending layers of the pole lug is m. The number of bending layers of the transition piece is m1. The overall thickness of the transition piece is t1. The thickness of the battery monomer is T. The thickness of the pole piece is t. The battery monomer satisfies the following relationship: 0.5 <= N = (L-5-0.1*T / 2) / <=15. Therefore, the safety and reliability of the battery monomer are improved.

To provide a technology that can suppress the elution of Al from a current collector into an aqueous electrolyte when an Al-containing current collector is used in a non-aqueous battery.SOLUTION: A non-aqueous battery includes a positive electrode, an aqueous electrolyte, and a negative electrode. One or both of the positive electrode and the negative electrode have a current collector containing Al. The current collector is in contact with the aqueous electrolyte. The aqueous electrolyte contains water and potassium polyphosphate dissolved in the water. At least one of protons, hydroxide ions, and polyphosphate ions contained in the aqueous electrolyte acts as carrier ions, and the aqueous electrolyte does not have a freezing point at a temperature of -40°C or higher.SELECTED DRAWING: Figure 1

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.

The invention provides a battery monomer, a battery and a power utilization device. Each single battery comprises a first electrode assembly and a second electrode assembly which are stacked, and the first electrode assembly and the second electrode assembly are stacked in the thickness direction of the single battery; each of the first electrode assembly and the second electrode assembly comprises a first tab group and a second tab group, and the first tab group and the second tab group are located at the two opposite ends of the corresponding electrode assembly in the length direction of the single battery; the central axis of at least one of the first tab group and the second tab group is staggered with the central axis of the corresponding electrode assembly in the length direction; and the two first tab groups of the first electrode assembly and the second electrode assembly are arranged in a staggered manner in the thickness direction of the battery monomer. According to the battery monomer, the battery and the power utilization device provided by the invention, undesirable phenomena of pseudo soldering and solder skips in the welding process can be reduced.

The present application provides a marking device, a pole piece production system and a pole piece marking method, which belong to the field of battery production equipment. Among them, the marking device includes a marking mechanism and a vibration mechanism. The marking mechanism is arranged on the side of the pole piece having the active material layer along the thickness direction of the pole piece. The vibration mechanism is connected to the marking mechanism, and the vibration mechanism is used to drive the marking mechanism to vibrate along the thickness direction of the pole piece, so that the marking mechanism squeezes the surface of the pole piece when rotating to form a mark on the pole piece. The marking device adopting this structure can drive the marking device to vibrate along the thickness direction of the pole piece through the vibration mechanism, thereby effectively compensating for the gap between the marking mechanism and the pole piece to ensure the marking effect of the marking mechanism on the pole piece, and there is no need to mark the pole piece through laser marking technology, thereby alleviating the phenomenon of the formation of a heat-affected zone on the pole piece after laser ablation, which is beneficial to reduce the damage to the pole piece during the marking process, so as to improve the production quality of the pole piece.

A lamination apparatus for a secondary battery comprises a lamination device and a cutting device. The supply unit supplies electrodes disposed on a separation sheet and a bonding unit which bonds the separation sheet and electrodes to manufacture a radical unit sheet. The cutting device cuts the separation sheet of the radical unit sheet to manufacture a radical unit constituted of a separator and the electrodes. The cutting device comprises a transfer conveyor, which transfers the radical unit sheet, a laser cutting unit, which irradiates a laser onto and thereby cuts the separation sheet of the radical unit sheet to manufacture the radical unit, a discharge conveyor, which transfers the radical unit cut by the laser cutting unit, and an adjusting unit which adjusts a speed for cutting the separation sheet passing through the laser cutting unit depending on a spaced distance between the transfer conveyor and the discharge conveyor.

A testing apparatus and method for testing a battery, a device, and a medium are disclosed. The testing apparatus includes a first ray source, a first detector, a second ray source, a second detector, a bearing platform, and a testing unit. The bearing platform is configured to place a battery to be tested, and the bearing platform is movable. A movement trajectory of the bearing platform passes between the first ray source and the first detector, and the movement trajectory of the bearing platform passes between the second ray source and the second detector. The testing unit is respectively connected to the first detector and the second detector. The testing unit is configured to perform defect testing on the battery to be tested based on a ray received by the first detector and a ray received by the second detector.

This application discloses an adhesive and its manufacturing method, a separator, an electrode plate, an electrode assembly, a battery cell, a battery, and a power consumption device, and relates to the field of battery technology. The adhesive includes a polyacrylate copolymer and a lithium-containing compound. The adhesive includes a polyacrylate copolymer and a lithium-containing compound, which allows the polymer to have very good swelling resistance, and exhibits good adhesion, improves ionic conductivity, and contributes to controlling the molecular weight and glass transition temperature of the polymer, thereby improving the adhesive performance. The adhesive further includes a lithium-containing compound, which allows the adhesive to have two functions of adhesive and lithium supplement at the same time, and eliminates the need to install an independent metallic lithium layer or lithium supplement layer in the lithium ion battery, and can improve the dynamic performance of the lithium ion battery, reduce the electrochemical impedance, and improve the cycle performance and power supply performance of the lithium ion battery.

The invention relates to a battery and a battery manufacturing method. A battery includes a battery case in which an electrode stack is accommodated, and in which a rectangular opening is formed by a pair of short-side wall portions and a pair of long-side wall portions of the battery case, and at a corner portion of the opening, an electrode stack is accommodated in the battery case. At least one of the short side wall portion or the long side wall portion is bent to form a protruding portion protruding toward an outer side of the battery case.

Disclosed herein is a thermal composite laminated cell comprising a negative electrode, a plurality of positive electrodes, and a separator, the separator comprising a first separator and a second separator, the negative electrode being attached to and between the first separator and the second separator to form a composite laminate comprising a plurality of body portions and a plurality of bending portions arranged alternately and continuously, the bending portions being provided with partially cut structures, the positive electrodes each being arranged between adjacent body portions in a thickness direction of the negative electrode, a projection in the thickness direction of the positive electrode falling completely within a planar area of the body portions. The present application overcomes the problem of poor alignment of the existing composite laminated cell, and has the advantages of good alignment and stable performance.

The invention relates to a battery and an energy storage device. The battery comprises at least two frames which are sequentially stacked and connected along a first direction; the two end plates are connected to the two opposite sides of the at least two frames in the first direction respectively, and a closed space is defined by the two end plates and all the frames; the at least two polar plates and the at least one partition plate are located in the closed space and alternately stacked in the first direction, and the at least two polar plates are fixed to the at least two frames in a one-to-one correspondence mode; the first elastic piece and the second elastic piece are configured to be elastically deformable in the first direction; wherein at least one frame is in elastic sealing connection with the adjacent frame and / or the adjacent end plate through a first elastic piece, and each end plate is in elastic connection with the adjacent polar plate through a second elastic piece. The problems that the internal resistance of the battery is rapidly increased and the battery capacity and the large-current discharge capacity are reduced due to the falling of the positive electrode active layer can be avoided.

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.

A battery module according to an embodiment of the present disclosure includes a first cell stack and a second cell stack including one or more battery cells, a mono frame receiving the first cell stack and the second cell stack. a spring located between the first cell stack and the second cell stack, a first plate located between the first cell stack and the spring, and a second plate located between the second cell stack and the spring, and the compression direction of the spring is parallel to the stack direction of the one or more battery cells.

Disclosed is a bipolar electrode including a current collector including a polymer film and conductive layer added to at least a part of each of an outer surface and an inner surface of the polymer film, a positive electrode formed on a first surface of the current collector, and a negative electrode formed on a second surface of the current collector, wherein the current collector including the polymer film is thermally fused so as to be sealed, whereby migration of an electrolyte between unit electrodes is prevented.