3194results about "Cylindrical casing cells/battery" patented technology

Disclosed is a cylindrical lithium-ion battery, comprising a battery cell, a protection board, a first elastic conductive member, a second elastic conductive member and a fixing cap. The protection board is installed above the battery cell at intervals, a top surface of the protection board is provided with a metal contact. An upper end of the first elastic conductive member abuts against a bottom surface of the protection board and is electrically connected to a positive electrode of the protection board, and a lower end of the first elastic conductive member abuts against a top end of the battery cell and is electrically connected to a positive electrode of the battery cell. An upper end of the second elastic conductive member abuts against the bottom surface of the protection board and is electrically connected to a negative electrode of the protection board.

Provided are electrochemical cells with at least a portion of the exterior surface coated in an aversive coating to deter children from eating the electrochemical cell. Described are compositions and methods for improving the adhesion of the aversive coating to the surface of the electrochemical cell.

A cylindrical secondary battery including an electrode assembly including a negative electrode plate and a positive electrode plate; a cylindrical can accommodating the electrode assembly and including a terminal hole in one side of the cylindrical can and an open inlet in another side of the cylindrical can; a terminal coupled to the cylindrical can through the terminal hole; and a negative electrode current collector in the cylindrical can and electrically connecting the cylindrical can to the negative electrode plate. The negative electrode current collector includes a notch groove or a cutting hole configured to be cut in response to an increase in pressure in the cylindrical can.

A battery cell, a battery, and an electrical device are described. The battery cell includes an electrode assembly. The electrode assembly is wound along a winding direction to form a jelly-roll structure containing a roll core cavity in a central region. The battery cell further includes a gel-state central column packed in the roll core cavity and formed by coagulation. The central roll core cavity formed by winding the electrode assembly is packed with the gel material that coagulates to form a gel-state central column. In this way, the central column can support the electrode assembly after coagulating in shape, thereby improving the deformation resistance of the electrode assembly, and reducing the risk of central collapse of the electrode assembly. In addition, when the electrode assembly is squeezed, the central column can serve as an elastic cushion to some extent.

A secondary battery includes: an electrode assembly including a first electrode plate, a separator, and a second electrode plate; a can accommodating the electrode assembly, a lower end of the can being open and being electrical connected to the second electrode plate; a first current collector plate between a top surface of the electrode assembly and the can and electrically connected to the first electrode plate; and a terminal part passing through a top surface of the can, a lower end of the terminal part being electrically and mechanically coupled to a top surface of the first current collector plate. A terminal liquid injection hole, through which an electrolyte is injected, extends through the terminal part.

Provided are aversive coatings and electrochemical cells with at least a portion of the exterior surface coated in the aversive coating to deter children from eating the electrochemical cell. Described are compositions and methods for preparing electrochemical cells coated in aversive coatings with ratios of aversive taste agent to water-soluble polymer that adequately adhere the aversive coating to the electrochemical cell.

A cylindrical secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate; a case accommodating the electrode assembly and having a lower end that is open and electrically coupled to the second electrode plate; a first current collector plate between a top surface of the electrode assembly and the case and that is electrically connected to the first electrode plate; a terminal passing through a top surface of the case and including a lower end electrically and mechanically coupled to a top surface of the first current collector plate; and a cap plate configured to seal the lower end of the case. The terminal includes a lower terminal including a welding groove having a depth from a top surface of the terminal in a downward direction; and an upper terminal in the welding groove of the lower terminal.

Provided are electrochemical cells with an aversive coating covering 2% to 50% of an area of an exterior surface of at least one terminal to deter children from eating the electrochemical cells. Described are compositions and methods for applying aversive coatings to specific locations of electrochemical cell terminals.

Provided are electrochemical cells with at least part of the exterior surface coated in a thin layer of an aversive coating to deter children from eating the electrochemical cell. Described are compositions and methods for applying thin layers of aversive coatings to electrochemical cells with sufficiently low electrical resistance to allow an electrical current to pass through the aversive coating.

A button cell includes: an electrode assembly including a first electrode, a second electrode, and a separator; a case connected to the first electrode, accommodating the electrode assembly, and having an opening exposing the electrode assembly; a cap plate connected to the case to cover an outer boundary region of the opening, and having a penetration hole exposing a central region of the opening; a terminal plate connected to the second electrode, insulated from and bonded to the cap plate, and including a protrusion plate protruding from a rear surface of a main plate in a direction toward the electrode assembly, the main plate covering the penetration hole; and a bonding layer between and insulating the cap plate and the main plate. A front surface of the main plate and a front surface of the cap plate are located at the same plane as each other.

A cylindrical battery cell includes: a housing, an electrode assembly, a current collecting component, an end cap and a cover plate. The housing includes an end wall and a side wall surrounding the end wall. An opening is formed on one side of the side wall facing away from the end wall. A first tab is disposed on one side of the electrode assembly facing the opening. The current collecting component is welded with the first tab. The end cap is disposed on one side adjacent to the opening, and is welded with the side wall to seal the opening. In the thickness direction of the end cap, the end cap includes a recessed portion that is recessed toward the electrode assembly, and the recessed portion is welded with the current collecting component. The cover plate is disposed above the recessed portion to cover the recessed portion.

A rechargeable battery includes: a case receiving an electrode assembly and including an opening; a cap assembly including a cap plate coupled to the case to cover the opening, and a terminal plate thermally fused to the cap plate by a thermal-fusion member, the thermal-fusion member electrically insulating the cap plate and the terminal plate from each other; and a sealing part attached to and located on a side of the thermal-fusion member, a side surface of the terminal plate, and an outer surface of the cap plate.

A cylindrical secondary battery includes: an electrode assembly; a case of which a lower end is open to accommodate the electrode assembly; and a cap plate coupled to the lower end of the case, wherein the cap plate includes a central area, an edge area and a connection area connecting the central area and an edge area, a vent is located in at least one of the central area and the connection area and an area of the cap plate in which the vent is formed has a smaller thickness than other areas.

The invention belongs to the technical field of battery production, and particularly relates to a battery production device, battery production equipment and a battery production method.The battery production device comprises a rack, a moving mechanism and a cover, the moving mechanism is connected with the rack and provided with a first station, and the moving mechanism is used for moving a first supporting cup to the first station; the first supporting cup is provided with a first mounting cavity for accommodating a battery; the cover body is used for being sealed and covered with the first supporting cup located at the first station so as to seal the first mounting cavity. The moving mechanism does not need to take the battery out of the supporting cup, movement actions of the mechanism are reduced, operation actions are simplified, the production efficiency of the battery is improved, and then the requirement for high-speed manufacturing of the battery is met.

A non-aqueous electrolyte secondary battery comprises: an electrode body obtained by winding a negative electrode (12) in which a negative electrode mixture layer (32) is formed on a negative electrode core body (30) and a positive electrode, with a separator therebetween; and a non-aqueous electrolyte. The non-aqueous electrolyte secondary battery is characterized in that: the negative electrode (12) has, at the winding direction inner-end side of the electrode body, a non-facing part (12a) which does not face the positive electrode with the separator therebetween; the non-facing part (12a) has a mixture non-facing part (12c) in which the negative electrode mixture layer (32) is formed on at least one surface of the negative electrode core body (30), from the winding direction outer end of the non-facing part (12a) and toward the winding direction inner side; and the average value of a mixture surface distance which is between the mixture non-facing part (12c) and the negative electrode (12e) positioned one turn outward of the mixture non-facing part (12c) is not less than 90 µm.

The utility model discloses a battery monomer, a battery pack and a power utilization device, the battery monomer comprises a shell, an electrode assembly and an adapter, the shell is provided with a first electrode terminal and a second electrode terminal, the electrode assembly comprises a first tab and a second tab which are opposite in polarity, and the adapter is connected with the first tab. The adapter is arranged between the electrode assembly and the shell and comprises a first adapter part and a second adapter part, the first adapter part is electrically connected with the first electrode terminal and the first tab respectively, and the second adapter part is electrically connected with the second electrode terminal and the second tab respectively; and at least parts of the first switching part and the second switching part are overlapped in the axial direction of the battery monomer. Therefore, the over-current area of the first switching part and the over-current area of the second switching part are increased, the technical problem that the over-current area of the switching piece is small is solved, and the over-current capacity of the switching piece is improved.

Disclosed is a cylindrical battery, which includes an electrode assembly; a battery housing accommodating the electrode assembly; a first current collecting plate coupled to the first uncoated portion and located within the battery housing; a cap plate covering the open portion; a sealing spacer configured to prevent the electrode assembly from moving and to enhance the sealing force of the battery housing; an electrode terminal electrically connected to the second uncoated portion; and an insulating gasket interposed between the electrode terminal and the perforated hole, and the electrode terminal includes a body portion; an outer flange portion extending along an outer surface of the closed portion from a circumference of one side of the body portion; an inner flange portion configured to extend from a circumference of the other side of the body portion; and a flat portion provided on an inner side of the inner flange portion.

The present invention relates to the technical field of batteries, and discloses a battery, which comprises: a shell, which comprises a pole assembly; the cylindrical roll core comprises a roll core body and a plurality of tabs led out from the roll core body; the tab is used for being electrically connected with a pole assembly or a shell; the plurality of tabs are distributed in multiple layers in the radial direction of the roll core body; the width E of a single tab is greater than or equal to 2mm and less than or equal to 9mm; the difference value between the maximum thickness and the minimum thickness of the roll core body is d, the number of winding layers of the roll core body is n, and d * n is larger than or equal to 0.08 and smaller than or equal to 0.9. According to the battery provided by the invention, by comprehensively controlling the relationship between the difference value d of the maximum thickness and the minimum thickness of the roll core body and the number n of winding layers of the battery core, the tab alignment degree in the radial direction of the battery core can be ensured as much as possible, the tab dislocation condition is effectively reduced, the gap between the front layer and the rear layer after winding is relatively uniform, and the effective welding area is ensured; and the overcurrent capability is ensured.

The embodiment of the invention provides a cylindrical battery, a battery pack and an electric device. The cylindrical battery comprises a shell, an electrode assembly and an end cover, the end cover comprises a base body and an end part, the base body comprises a first part and a second part, and the projection of the first part surrounds the projection of the second part in the axial direction. The first part is in insulated connection with the shell; the second part is connected with the first part and the end part; the first portion includes a first surface facing the electrode assembly, and the second portion includes a second surface facing the electrode assembly, the second surface being closer to the end portion than the first surface in the axial direction. And the second surface of the second part is closer to one side of the end part, so that a larger accommodating space is favorably provided for the electrode assembly in the shell of the cylindrical battery, the volume of the electrode assembly is favorably increased, and the energy density of the cylindrical battery is improved.

A rechargeable battery includes: a case receiving an electrode assembly and including an opening; a cap assembly including a cap plate coupled to the case and covering the opening, and a terminal plate coupled to the cap plate; and a housing covering the cap plate and coupled to the case, and an outer surface of the terminal plate protrudes more than an outer surface of the housing to have a height difference.

The present application discloses a preparation method, apparatus, device and medium for a No. 5 lithium-ion battery. The method includes: preparing a battery cell; selecting a steel material and stamping it to obtain an upper steel shell of the battery; determining bending parameters of the spring sheet based on user requirements and attribute parameters of the spring sheet; assembling a PCB board and the upper steel shell based on the bending parameters, bending a negative spring sheet on a side of the PCB board downwards, and bending a positive spring sheet at a bottom of the PCB board downwards, thus obtaining a complete step-down charging terminal; fitting the complete step-down charging terminal onto the battery cell to obtain a semi-finished product; and fixing the semi-finished product by roller pressing, and covering an insulating film on an outside of the semi-finished product to obtain a finished product of the battery.

The present disclosure provides batteries that have a reduced risk or no risk of esophageal or gastrointestinal damage in a conductive aqueous environment, such as when accidentally swallowed. The batteries are, in some embodiments, nominally 9V, 3V or 1.5V coin or button cell-type batteries.

The utility model relates to the technical field of cylindrical batteries, in particular to an aluminum shell cylindrical battery structure with liquid injected at a pole end. Comprising a shell, a roll core is arranged in the shell, the top of the roll core is a negative electrode end, the bottom of the roll core is a positive electrode end, the positive electrode end comprises a cover plate, the edge of the cover plate and the bottom of the shell are subjected to laser welding, the bottom of the cover plate and a positive electrode lug of the roll core are subjected to laser welding, and an anti-explosion valve is arranged in the middle of the cover plate; and a liquid injection hole for injecting liquid is formed between the negative collector plate and the stud. The structure of the positive electrode end is simplified, the cost of structural parts is greatly reduced, and meanwhile, the internal space of the battery cell is fully utilized; compared with the prior art, a conventional bottom liquid injection mode is changed into a top liquid injection mode, so that the turning frequency of the cylindrical battery is reduced, the process is simplified, the equipment investment cost is reduced, the sealing nail is arranged in the liquid injection hole of the stud after the liquid injection is finished, the top end of the sealing nail and the stud are subjected to laser welding, and the sealing and electric connection reliability is effectively ensured.

The invention discloses a tab protection interlayer, a full-tab battery cell and a cylindrical battery with a shell electrode, a non-adhesive area and an adhesive area are arranged on the tab protection interlayer, so that the non-adhesive area is attached to a tab but is not adhered to the tab, and the adhesive area is adhered to a small part of tab root area and is adhered to the end part of a roll core main body at the same time; the probability that the full tab is pulled by the adhesive tape to rebound is reduced to a great extent. When the full tab is kneaded, the interlayer can be pressed towards the center direction of the roll core to form a bending structure, so that the area of an extruded area of the interlayer is reduced, and the interlayer can be adhered to a small part of area of the root part of the tab and an adhesive area on the roll core main body by virtue of the bending structure, so that the roll sleeve and wrinkles are effectively prevented from being extruded by a shell. And the interlayer can also form an elastic sealing ring structure between the shell and the roll core main body, so that the electrolyte is prevented from leaking to the negative electrode end of the cylindrical battery with the positive electrode shell by combining the adhesion sealing effect of the adhesive glue of the interlayer, and the short circuit between the tab and the shell is avoided.

The invention discloses a cylindrical battery design method based on an Archimedes spiral formula, which comprises the following steps of: calculating the number of winding turns of a positive electrode, a negative electrode and two layers of diaphragms at one time through the Archimedes spiral formula; and establishing a relation curve of the number of winding turns, the winding radiuses and the winding curves xy of the four groups of assemblies on the battery simulation diagram, obtaining xy coordinate values of the corresponding winding curves of the four groups of assemblies, and completing the winding design of the cylindrical battery. After the positive electrode, the negative electrode and the diaphragm are wound, the diameter of the winding core is certainly and completely consistent with the preset diameter, and the situation that the winding core cannot enter a shell is avoided. Moreover, the method can directly simulate the cross section condition of the wound roll core in an excl table, can more visually judge the diameter of the wound roll core, the wrapping condition of a negative electrode to a positive electrode and other information, and provides great convenience for the design of the roll core.

Disclosed is a cylindrical battery, which includes an electrode assembly; a battery housing accommodating the electrode assembly and electrically connected to the second uncoated portion; a cap plate configured to seal the open portion of the battery housing; a current collecting plate having a rim portion, an uncoated portion coupling portion coupled to the first uncoated portion, and a terminal coupling portion spaced apart from the uncoated portion coupling portion; an electrode terminal riveted through a perforated hole formed in a closed portion and coupled to the terminal coupling portion; and an insulating gasket interposed between the electrode terminal and the perforated hole, wherein the electrode terminal includes a body portion; an outer flange portion; an inner flange portion; and a flat portion provided on an inner side of the inner flange portion and coupled to the terminal coupling portion.

A composite current collector and a preparation method therefor, and an electrode and a manufacturing method therefor and the use thereof. The composite current collector comprises a substrate (1), a first metal layer (2) and a second metal layer (3). The first metal layer (2) and the second metal layer (3) are respectively provided on surfaces of two opposite sides of the substrate (1). The composite current collector is divided into a blank area (4) and an electrode area (5) in the width direction thereof, wherein the blank area (4) is configured to form tabs; the electrode area (5) is configured to be an area coated with active material slurry; a plurality of through holes (6) are distributed in the blank area (4); the through holes (6) penetrate the first metal layer (2), the substrate (1) and the second metal layer (3) in sequence; an electrically conductive layer (7) is provided inside each through hole (6); and two ends of the electrically conductive layer (7) are respectively connected to the first metal layer (2) and the second metal layer (3).

Provided in the embodiments of the present application are a battery cell, a manufacturing method therefor, a battery and an electrical apparatus, the battery cell comprising a casing (1) comprising a first wall (13); an electrode assembly (3) arranged in the casing (1), the electrode assembly (3) comprising an electrode body (31) and a first tab (32), and the first tab (32) being led out of the electrode body (31); and a first current collecting member (4) for electrically connecting the first tab (32) and the first wall (13), the first current collecting member (4) being connected to the inner surface of the first wall (13) by means of a first weld seam (41), and the first weld seam (41) not penetrating to the outer surface of the first wall (13).

A rechargeable battery includes: an electrode assembly including a first electrode, a second electrode, a separator between the first and second electrodes, and first and second electrode tabs respectively coupled to the first and second electrodes; a case accommodating the electrode assembly and coupled to the first electrode tab; and a cap assembly sealing an opening in the case. The cap assembly includes: a cap plate covering the opening in the case; and a terminal plate coupled to the cap plate. The terminal plate includes: a flange portion coupled to and electrically insulated from the cap plate; and a tab connecting portion protruding from the flange portion toward the electrode assembly and extending through a terminal opening in the cap plate to be coupled to the second electrode tab. The terminal plate has a flat outer surface, and the tab connecting portion has a flat inner surface.

The invention relates to the technical field of lithium ion batteries, in particular to a full-tab cylindrical lithium ion battery and a power utilization device, the full-tab cylindrical lithium ion battery comprises a winding type battery cell, and a positive plate, a diaphragm and a negative plate which are laminated according to a specific mode; the positive plate comprises a positive current collector as well as a positive slurry coating area and a positive empty foil area which are positioned on at least one surface of the positive current collector; the negative plate comprises a negative current collector as well as a negative slurry coating area and a negative empty foil area which are positioned on at least one surface of the negative current collector; after winding, the positive empty foil area and the negative empty foil area respectively form a positive tab and a negative tab through a kneading, cutting and stacking or ultrasonic process; when the battery discharges at 10C, the slope of a curve relation formed by data fitting of the temperature rise coefficient and the discharge current is 0.2-1, the temperature rise performance of the full-tab battery cell is obviously superior to that of a traditional tab battery, more electric quantity can be discharged in a lower temperature interval, and the full-tab battery cell has relatively good safety and relatively high energy density.