1795results about "Large-sized flat cells/batteries" patented technology

The invention provides a bipolar battery and an electric device. The bipolar battery comprises n stacked bipolar electrodes, wherein n is greater than 1; each bipolar electrode comprises a current collector, a positive electrode and a negative electrode; the positive electrode film layer is arranged on one side of the current collector, the side, provided with the positive electrode film layer, of the current collector is a positive electrode side, and the side, opposite to the positive electrode side, of the current collector is a negative electrode side; and a negative electrode film layer or a conductive layer is optionally arranged on the negative electrode side.

The present application relates to the field of batteries, and provides a lamination system. The lamination system comprises a first transfer mechanism, a second transfer mechanism, a separator unwinding mechanism, and a laminating device. The first transfer mechanism is used for transferring a first electrode sheet. The second transfer mechanism is used for transferring a second electrode sheet. The polarity of the second electrode sheet is opposite to that of the first electrode sheet. The separator unwinding mechanism is used for unwinding a separator. The laminating device is used for receiving the first electrode sheet, the separator, and the second electrode sheet, and laminating the first electrode sheet, the separator, and the second electrode sheet to form a battery cell. In the lamination system, the first transfer mechanism, the second transfer mechanism, and the separator unwinding mechanism can respectively provide the first electrode sheet, the second electrode sheet, and the separator for the laminating device, and the laminating device can laminate the first electrode sheet, the separator, and the second electrode sheet to form a battery cell, achieving automated lamination, and facilitating the improvement of the lamination quality and the production efficiency.

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.

Embodiments of the present application provide a battery cell, a battery, and an electric device. The battery cell comprises a casing and an electrode assembly. The casing comprises a first wall part. The first wall part is provided with N pressure relief mechanisms arranged in a first direction. The electrode assembly is accommodated in the casing. The electrode assembly comprises a main body part and a tab. The main body part comprises a plurality of sub-regions. In the first direction, at least one end of the main body part is provided with the tab, the plurality of sub-regions are continuously arranged, the length of the main body part is L, the length of each sub-region is L1, L=L1×N, L≥400 mm, and N≥2. In the thickness direction of the first wall part, the projection of each pressure relief mechanism is correspondingly located in one sub-region. Each pressure relief mechanism can discharge a discharge medium generated by thermal runaway of the corresponding sub-region, and the discharge medium generated by thermal runaway of each sub-region can be quickly discharged through the corresponding pressure relief mechanism, so that the pressure relief timeliness of the battery cell can be effectively improved, thereby improving the reliability of the battery cell.

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.

The invention discloses an electrochemical device and electric equipment. The electrochemical device comprises a shell, an electrode assembly and a bonding piece, the shell comprises a first side wall, the electrode assembly is arranged in the shell and comprises a first side face adjacent to the first side wall, and the first side face comprises a second area, a first area and a third area which are sequentially arranged in the first direction. The bonding member is located between the case and the electrode assembly. The bonding piece comprises a first side and a second side which are opposite, the first side comprises a first bonding area bonded with the first side wall, and the second side comprises a second bonding area bonded with the second area, a third bonding area bonded with the third area and a first non-bonding area located between the second bonding area and the third bonding area. In the second direction, the projection of the first bonding area is overlapped with the first non-bonding area, and the second direction is the direction in which the first side wall is opposite to the first side face. The first non-bonding area of the bonding piece is not bonded with the first side surface, so that the risk that the electrode assembly is damaged is reduced.

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.

An electrode sheet, a battery cell, and an electric device. The electrode sheet comprises a current collector, a first transition layer, a second transition layer, two active material layers, a first conductive member, and a second conductive member. The current collector comprises a supporting layer, a first conductive layer, and a second conductive layer. The current collector further comprises a first section and a second section. The first transition layer is located in the first section. The second transition layer is located in the first section. One of the active material layers is arranged on the first transition layer, and the other of the active material layers is arranged on the second transition layer. The first conductive member is arranged on the first conductive layer. The second conductive member is arranged on the second conductive layer. The first conductive member and the second conductive member are welded and form a plurality of welding marks, and at least one welding mark is further connected to the current collector. The current collector further comprises a first part and a second part, the projection of an edge part of each active material layer adjacent to the welding marks and the projection of the first part overlap, and the second part is provided with welding marks. The tensile strength of the first part is smaller than that of the second part. The electrode sheet can improve the safety.

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.

The invention provides a secondary battery and a preparation method thereof, the secondary battery comprises a first pole piece, a second pole piece and an insulation support part, the first pole piece and the second pole piece are alternately laminated along a first direction to form a laminated body, the first pole piece is provided with an extension part which extends outwards compared with the second pole piece, and the insulation support part is arranged on the extension part. A gap part is formed between the adjacent extending parts in the first direction, the insulating supporting part comprises a filling part and a covering part, the filling part fills the gap part, and the covering part covers the end parts of the extending parts. The safety of the secondary battery provided by the invention is high.

The invention relates to a battery cell assembly and a preparation method thereof, a battery monomer, a battery and a power utilization device. The battery cell assembly comprises a first pole piece, a plurality of second pole pieces and diaphragms, the diaphragms are arranged on the two opposite sides of the first pole piece and are compounded with the first pole piece to form a composite piece, the composite piece is constructed to be continuously folded in a Z shape to form multiple layers of sub-composite pieces, and one second pole piece is arranged between any two adjacent sub-composite pieces; wherein along the length direction of the second pole piece, an isolating layer is connected between at least one side edge of each second pole piece and each sub composite piece. The isolation layer can be connected with the second pole piece and the sub-composite piece, so that the distance between the second pole piece and the sub-composite piece is shortened, the gap at the corner of the composite piece is reduced, the transmission dynamics performance of the battery is improved, and the phenomenon of lithium precipitation at the edge is reduced; besides, when lithium precipitation accumulation occurs at the edge, dendritic crystals generated by lithium precipitation can be prevented from puncturing the diaphragm due to the arrangement of the isolating layer, so that the short-circuit risk caused by lap joint of the positive electrode and the negative electrode is reduced.

The utility model discloses a tab penetrating device and assembling equipment of a battery. The battery comprises a shell and an electrode assembly, the shell is provided with a containing cavity, a through hole communicated with the containing cavity and the outside is formed in the shell, the electrode assembly is arranged in the containing cavity, and the tab penetrating device is used for guiding a tab part of the electrode assembly to extend out of the through hole. The tab penetrating device comprises a clamping mechanism and a driving mechanism, the clamping mechanism comprises a first clamping piece and a second clamping piece which are movably connected, and a clamping space with an adjustable opening and closing angle can be formed between the first clamping piece and the second clamping piece. And the driving mechanism is in transmission connection with the first clamping piece and / or the second clamping piece so as to drive the first clamping piece and / or the second clamping piece to move to adjust the size of the opening and closing angle. And the driving mechanism is configured to drive the first clamping piece and / or the second clamping piece to move, so that the first clamping piece and the second clamping piece can clamp the tab part to pass through the through hole and extend out of the accommodating cavity. Through the mode, the assembly difficulty of the battery can be effectively reduced.

The invention discloses a processing technology of a secondary battery, a battery pack and electric equipment, and relates to the technical field of batteries, the secondary battery comprises a first battery cell, a second battery cell, an adapter plate and a top cover, the processing technology comprises the following steps: respectively welding the battery cell tabs on the first battery cell and the second battery cell to the corresponding adapter plates. The first battery cell and the second battery cell are arranged at an angle, and the included angle is smaller than 180 degrees. And maintaining the first battery cell and the second battery cell in a placement state through a jig. And welding the adapter plate on a corresponding pole on the top cover. The jig is dismounted, the top cover limits the first battery cell and the second battery cell, and the state that the included angle is smaller than 180 degrees is maintained. And combining and packaging the first battery cell and the second battery cell. According to the invention, the requirement on the height of the tab can be reduced, the purpose of reducing the height of the tab is achieved, and the use amount of the tab material is effectively reduced, so that the purpose of reducing the cost is achieved.

The present application provides an electrode sheet, a battery cell, and a battery. The electrode sheet comprises a current collector and a tab. The current collector comprises a supporting layer and a conductive layer, the conductive layer being at least partially located on the surface of one side of the supporting layer. The tab comprises a main body part and a connecting part adjacent to the main body part, the connecting part being connected to the conductive layer, and the main body part extending in a direction away from the current collector. In a direction MD of the electrode sheet, the length of the connecting part of the tab is greater than the length of the main body part of the tab. By means of this configuration, the surrounding part of the tab is lengthened, causing the whole tab to be divided into the main body part and the connecting part. The main body part still maintains an original specification and size, and the original basic function of the tab is not affected, while the connecting part, which has a relatively large length, has a welding connection with the conductive layer of the current collector. In this way, the current carrying capacity of the formed welding position is improved, and charging and discharging temperature rise can be reduced, solving the problems in the existing technology of current carrying capacity of a tab welding position of a composite current collector being insufficient, and the temperature of the welding position rising easily.

The present application is applicable to the technical field of batteries (100), and provides a battery cell (10), a battery (100), an electrical apparatus, a combination apparatus (2100) and method, and a processing device (2000). The processing device (2000) is used for processing of batteries (100), and comprises the combination apparatus (2100). The combination method comprises: driving the combination apparatus (2100) to cause a portion of a separator (113) to be combined with and fixed to a first electrode sheet (111) and / or a second electrode sheet (112). The electrical apparatus comprises the battery (100); the battery (100) comprises the battery cell (10); the battery cell (10) comprises an electrode assembly (11); the electrode assembly (11) comprises first electrode sheets (111), second electrode sheets (112) and separators (113); the first electrode sheets (111) and the second electrode sheets (112) are alternately stacked or alternately stacked and wound; at least a portion of each separator (113) is arranged between a first electrode sheet (111) and a second electrode sheet (112), and a portion of the separator (113) is combined with and fixed to the first electrode sheet (111) and / or the second electrode sheet (112). In this way, only a portion of each separator (113) is used for the combination operation, and the remaining portion of the separator (113) is not used for the combination operation, ameliorating the problem of poor overall air permeability of the separators (113), and helping to improve the ion conductivity of the separators (113), thus improving the dynamic properties of battery cells (10).

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.

Described herein is an all-solid-state battery comprising two or more mono cells connected in series, wherein: each mono cell comprises a lithium-based cathode, a sulfide solid electrolyte, and an anode; and adjacent mono cells are connected through a single, shared current collector in contact with a cathode and an anode of adjacent mono cells. The all-solid-state battery can be fabricated by stacking freestanding layers of the lithium-based cathode, the sulfide solid electrolyte, the anode, and the current collector in a bipolar design, and pressing the layers together to form the all-solid-state battery. The lithium-ion battery -can be incorporated into portable electronics and electric vehicles.

The secondary battery comprises an electrode assembly, the electrode assembly comprises a first pole piece, a diaphragm and second pole pieces which are sequentially stacked in the first direction, and the first pole piece comprises a first double-sided pole piece located between two adjacent second pole pieces; the first double-sided pole piece comprises a first metal foil and first active layers arranged on the two surfaces of the first metal foil in the first direction. The first pole piece further comprises a first single-face pole piece, the pole piece on the outermost layer of the electrode assembly in the first direction is the first single-face pole piece, the first single-face pole piece comprises a first current collector and a second active layer, and the surface, facing the second pole piece, of the first current collector is provided with a second active layer. The first current collector comprises a first polymer layer and a second metal layer which are laminated along a first direction, the 1cm < 2 > unit area resistance value of the first metal foil at 25 DEG C is R1, and the 1cm < 2 > unit area resistance value of the second metal layer at 25 DEG C is R2; and-30 m omega < = R1-R2 < = 15 m omega. According to the secondary battery and the electronic equipment, the problem of capacity loss of the secondary battery can be improved.

The present application discloses a secondary battery, a battery module, and a device using the secondary battery as a power source. The secondary battery includes: a casing; an electrode assembly disposed in the casing; a cap assembly; and a current collecting member including an adapting piece and a connecting component provided separately and connected with each other; the adapting piece connected with the electrode terminal of the cap assembly and including a guiding section; the connecting component including a current collecting section to be connected with the guiding section and a tab connecting section to be connected with the electrode assembly; and the connecting component has a rigidity less than that of the guiding section, so that deformation of the guiding section toward the electrode assembly can be reduced when a portion of the connecting component connected with the electrode assembly is bent with respect to the length direction.

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.

The invention provides a lamination system, and relates to the field of batteries. The lamination system comprises a first transfer mechanism, a second transfer mechanism, an isolating membrane unwinding mechanism and a lamination device, wherein the first transfer mechanism is used for transferring a first pole piece; and the second transferring mechanism is used for transferring the second pole piece. The polarity of the second pole piece is opposite to that of the first pole piece. The isolating membrane unwinding mechanism is used for unwinding an isolating membrane. The lamination device is used for receiving the first pole piece, the isolating membrane and the second pole piece and laminating the first pole piece, the isolating membrane and the second pole piece to form a battery cell. The first transfer mechanism, the second transfer mechanism and the isolating membrane unwinding mechanism of the lamination system can respectively provide the first pole piece, the second pole piece and the isolating membrane for the lamination device, and the lamination device can stack the first pole piece, the isolating membrane and the second pole piece to form a battery cell, so that automatic lamination is realized, and the lamination quality and the production efficiency are favorably improved.

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).

A metal hydrogen battery is presented. The metal hydrogen batter battery comprises an electrode stack, the electrode stack having alternating anode and cathode assemblies, the anode and cathode assemblies being separated by a separator, each of the anode assemblies including at least one anode layer connected to an anode bus, each of the cathode assemblies including at least one cathode layer connected to a cathode bus, where each of the anode busses are electrically and mechanically attached to form an anode conductor, and where each of the cathode busses are electrically and mechanically attached to form a cathode conductor. The electrode stack is positioned within a pressure vessel, the pressure vessel having a sidewall, a cathode end plate, and an anode end plate. Finally, an electrolyte is contained within the pressure vessel.

Provided in the present application are a bipolar battery and an electric apparatus. The bipolar battery comprises n stacked bipolar electrodes, where n>1. Each of the bipolar electrodes comprises: a current collector, and a positive-electrode film layer provided on one side of the current collector, wherein the side of the current collector on which the positive-electrode film layer is provided is a positive side, and the side opposite to the positive side is a negative side; and the negative side is optionally provided with a negative electrode film layer or a conductive layer.

The invention discloses a secondary battery, a manufacturing method of the secondary battery and an electronic device, the secondary battery comprises a shell, electrolyte and an electrode assembly, and the electrode assembly and the electrolyte are arranged in the shell. The electrode assembly comprises at least two pole piece composites and a plurality of first pole pieces which are arranged in a stacked mode. And the pole piece complex comprises a second pole piece and two diaphragms. The diaphragm comprises a first part, a second part and a third part, and the third part is connected between the first part and the second part. The first parts of the two diaphragms are mutually adhered to form a first composite part, and the second parts of the two diaphragms are mutually adhered to form a second composite part. The parts of the first composite parts of the at least two pole piece composites are mutually laminated and bonded to form a first composite piece, and the parts of the second composite parts of the at least two pole piece composites are mutually laminated and bonded to form a second composite piece. On the premise of reducing the energy density loss of the secondary battery, the falling performance of the secondary battery is improved, and the safety performance of the secondary battery is improved.