5349results about "Small-sized cells cases/jackets" patented technology

The invention relates to the technical field of lithium batteries, in particular to a safe sealing combined structural member of a cylindrical battery, which comprises a shell, an inner separator and a sealing ring, the middle part of one end of the shell is riveted with a pole, the inner separator is attached to the inner wall of the shell, the part of the inner separator close to the pole is pressed by the pole and then is filled between the turnup and the straight section of the pole, and the sealing ring is arranged in the shell. The part, far away from the straight section, of the turned edge of the pole gradually inclines towards the inner wall of the shell so as to form a non-flat riveting lower buckling structure on the inner separator, and meanwhile, an R-angle structure is pre-formed on the bent part, matched between the turned edge of the pole and the straight section, of the inner separator, so that extrusion between the turned edge of the pole and the inner separator in the riveting process is reduced; and the part, close to the pole, of the sealing ring is pressed by the pole, is filled between the pole ring and the straight section of the pole, and is in contact fit with the inner separator. The technical problem that in the prior art, after a safety sealing combined structural part of a cylindrical battery of a lithium battery is riveted, electrolyte can permeate into a sealing ring, and performance hidden danger is caused is solved.

A secondary battery includes: a cylindrical case; an electrode assembly in the case and comprising a first tab protruding in a first direction and a second tab protruding in a second direction opposite to the first direction and connected to the case; a current collector plate in the case and comprising a current collector plate body portion connected to the first tab and a current collector plate liquid injection portion on the current collector plate body portion; a cap plate sealing the case so that the electrode assembly and the current collector plate are isolated from an outside; a rivet terminal including a rivet body portion coupled to the cap plate and a rivet liquid injection portion coupled to the current collector plate liquid injection portion; and a sealing portion sealing the current collector plate liquid injection portion and the rivet liquid injection portion.

A battery cell, a battery, and an electric device. The battery cell includes a housing assembly, an electrode assembly, and a current collecting member. The housing assembly includes an electrode lead-out portion for inputting or outputting electric energy. The electrode assembly is accommodated in the housing assembly, where the electrode assembly includes a body and a tab, the tab is disposed on the body, and a material of the tab is different from that of the electrode lead-out portion. The current collecting member includes an additional portion having a same material as that of the electrode lead-out portion and a body portion having a same material as that of the tab, the additional portion is connected to the body portion, the additional portion is connected to the electrode lead-out portion through welding, and the body portion is connected to the tab through welding.

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 application relates to a cylindrical battery monomer, a battery and a power utilization device. The cylindrical battery monomer comprises electrolyte, an electrode assembly and a shell. The shell contains the electrolyte and the electrode assembly. The electrolyte comprises an electrolyte salt, and the electrolyte salt comprises a hexafluorophosphate. The shell comprises a shell body and a film layer. The film layer is arranged on at least a surface of the shell body facing the electrode assembly. The base element of the film layer is a nickel element. The use reliability and the cycle performance of the cylindrical battery monomer in the embodiment can be improved.

A battery cell includes a housing and an electrode assembly, where the electrode assembly is accommodated within the housing, the housing is cylindrical, a height of the housing is H1, and a radius of the housing is R1. The housing includes a first end wall, a second end wall, and a side wall, where the first end wall and the second end wall are oppositely disposed along a height direction of the housing, and the side wall connects the first end wall and the second end wall. A sum of thicknesses of the first end wall and the second end wall is a, and a thickness of the side wall is b, satisfying: (R1−b)2*(H1−a) / (R12*H1)≥96%.

The present application discloses a battery cell, a battery, and an electrical device. The battery cell includes a shell, an electrode assembly, and an insulating member. The electrode assembly is accommodated in the shell and includes electrode plates and a separator, which are arranged in a stacked manner. The insulating member is attached to an outer side of the electrode assembly, and the surface roughness of at least some regions of an outer surface of the insulating member away from the electrode assembly is greater than the surface roughness of the separator.

The utility model provides a cover plate and a battery, the cover plate is applied to the battery, the cover plate is provided with a plurality of rib bodies, the plurality of rib bodies extend outwards from the center of the cover plate along the radial direction of the cover plate, and the plurality of rib bodies are distributed along the circumferential direction of the cover plate; the cover plate is also provided with a plurality of nick grooves, the nick grooves are formed between every two adjacent rib bodies, and the nick grooves are set to be broken when the internal pressure of the battery exceeds a preset value. The nick grooves are formed in the cover plate area between the two adjacent ribs, so that the cover plate can be torn along the nick grooves when the internal pressure of the battery exceeds the allowable strength value of the cover plate under the condition that the strength of the ribs is not reduced, and the stable release of the internal pressure is facilitated.

The utility model belongs to the technical field of batteries, and discloses a battery shell and a battery, the battery shell comprises a shell body, a cover plate module, a composite cover plate, a composite pole and a protective end plate, the cover plate module comprises a first cover plate body and a connecting pole penetrating through the first cover plate body, the composite cover plate is provided with a penetrating structure for the pole lug to extend out, the composite pole column is arranged on one side, deviating from the cover plate module, of the composite cover plate, the pole lug extending out of the accommodating cavity realizes current conduction through the composite pole column, and the protective end plate is provided with an avoiding through hole for the pole lug to penetrate through. The tab on one side and the composite pole located on the outer side of the containing cavity achieve current conduction through the penetrating structure, the space occupied by the composite pole and the space for connecting the bent tab and the composite pole are saved, the space utilization rate is increased, space is provided for increasing the size of the pole set, the energy density is increased, and the service life of the pole set is prolonged. And the pole lug is prevented from skewing during passing through the protection end plate, so that the reliability of the structure is improved.

Example embodiments include electrode assemblies and all-solid-state batteries. The electrode assembly includes a first solid electrolyte layer, a positive electrode layer, a second solid electrolyte layer, and a negative electrode layer that are disposed along a radial direction of the electrode assembly. The positive electrode layer includes a positive electrode current collector, a first positive electrode active material layer on a first surface of the positive electrode current collector and in contact with the first solid electrolyte layer. A first width of the first positive electrode active material layer is less than a second width of the first solid electrolyte layer, a first buffer structure adjacent to a first side of the first positive electrode active material layer, and a second buffer structure adjacent to a second side of the first positive electrode active material layer.

The invention discloses a cylindrical battery and a battery pack. The cylindrical battery comprises: a housing having an opening formed at one end in the axial direction thereof; the electrode assembly is arranged in the shell; the cover plate is installed on the opening in a sealed mode, and the cover plate comprises a first weak structure; the switching piece is arranged between the electrode assembly and the cover plate, the switching piece comprises a first switching part and a second switching part, the first switching part is electrically connected with a tab of the electrode assembly, and the second switching part is fixed and electrically connected with the shell; a second weak structure is arranged on the first adapter part; the calculation formula of the radius R of the second weak structure is shown in the specification. The final position of the second weak structure is determined through a calculation formula, at least part of the second weak structure does not fall into the area where the pressure relief part is located after deformation, then the second weak structure is supported by the edge of the fixing part so as to be prone to deformation, and therefore the beneficial technical effects of improving safe pressure relief and discharging efficiency and stability of the anti-explosion valve are achieved.

A solid-state battery including a solid-state battery laminate having a battery constituent unit including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer along a stacking direction; a positive electrode terminal on a first side surface of the solid-state battery laminate; and a negative electrode terminal on a second side surface of the solid-state battery laminate. The positive electrode layer and the negative electrode layer include a terminal contact portion in direct contact with the positive electrode terminal and the negative electrode terminal, respectively, and a non-terminal contact portion other than the terminal contact portion, and at least one of the positive electrode layer and the negative electrode layer has relatively small active material amount with respect to the non-terminal contact portion.

The present application relates to the technical field of batteries, and provides a cover plate assembly, a battery, and an electrical device. The cover plate assembly comprises a cover plate and an electrode terminal. A mounting hole is provided in the center of the cover plate, the cover plate comprising a first insulating member. The electrode terminal comprises a terminal piece and a second insulating member, the second insulating member being arranged on a side of the terminal piece. The terminal piece at least partially passes through the mounting hole and is connected to the cover plate. The second insulating member is in surface contact with the first insulating member. The cover plate assembly provided in examples of the present application can reduce the possibility of mutual interference of different parts of a battery cover plate during assembly, and improve the assembly efficiency and assembly reliability of the battery cover plate.

The utility model relates to a shell with a reinforcing structure, a cylindrical battery and a battery pack. The shell with the reinforcing structure is applied to the cylindrical battery and comprises an end wall and a side wall surrounding the peripheral side of the end wall, the end wall is provided with a pole hole for mounting a pole, one end of the pole is a pole flange and is arranged on the outer side of the end wall, a sealing ring is arranged between the pole flange and the outer surface of the end wall, and the other end of the pole is a pole flange and is arranged on the inner side of the end wall. The terminal post flange and the terminal post flange clamp the end wall so as to fix the terminal post on the end wall, and the shell comprises a reinforcing rib which is arranged on the surface of the end wall and is positioned above the terminal post flange. The reinforcing ribs can reinforce the end wall corresponding to the pole turnup, reduce the deformation of the shell in the pole turnup area, further reduce the bending force of the end wall to the pole turnup, and prevent the pole from flying out due to thermal deformation. Meanwhile, the sealing ring and the pole flange are structurally adjusted according to the reinforcing ribs and are correspondingly nested, so that the deformation of the end wall corresponding to the pole flange can be further weakened.

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.

The utility model provides a cylindrical lithium ion battery, which relates to the technical field of batteries and comprises a shell, an infiltration path formed by a plurality of liquid guide structures is arranged on the inner wall of the shell, a roll core is placed in the inner space of the shell, and a positive terminal and a negative cover plate are respectively arranged at the upper end and the lower end of the shell. The battery cell has the beneficial effects that the internal space of the battery cell shell is increased by adding a plurality of liquid guide structures, and the liquid injection amount is increased; the infiltrating path of the battery cell is increased, and a new path for infiltrating from the cylindrical side surface to the inner ring of the battery cell is added on the basis of a single path of infiltrating the two ends of the traditional cylindrical battery cell; the backflow of electrolyte in the charge-discharge cycle process of the battery cell is promoted, and the abnormities of battery cell liquid shortage, large internal resistance, lithium precipitation and the like are improved.

The invention discloses a connector and a connector assembly. The connector comprises: a housing adapted to mate with a mating housing of a mating connector; the high-voltage module is arranged in the shell and is suitable for being fastened to a high-voltage matching module of a matching connector so as to be electrically connected with the high-voltage matching module; and a low-voltage module movably mounted outside the housing for electrically connecting to a low-voltage mating module of a mating connector. The low-voltage module can move between a pre-assembling position electrically separated from the low-voltage matching module and a final assembling position electrically connected with the low-voltage matching module. The low-voltage module is moved individually to a final position in electrical connection with the low-voltage mating module only after the high-voltage module has been fastened to the high-voltage mating module. Therefore, whether the high-voltage module is fastened to the high-voltage matching module or not can be accurately judged according to the electric connection state between the low-voltage module and the low-voltage matching module, and the use safety of the connector is improved.

The invention discloses a connector and a connector assembly. The connector includes: a housing; a high-voltage module disposed in the housing and adapted to be fastened to a high-voltage mating module of a mating connector so as to be electrically connected with the high-voltage mating module; and a detection member rotatably mounted on the exterior of the housing for detecting whether the high-voltage module has been fastened to the high-voltage mating module. When the high-voltage module is not fastened to the high-voltage matching module, the high-voltage module is located at a position interfering with the detection piece, so that the detection piece cannot be rotated from an initial position to a detection position; when the high-voltage module is fastened to the high-voltage matching module, the high-voltage module is located at a position which does not interfere with the detection piece, so that the detection piece can be rotated from the initial position to the detection position. Therefore, whether the high-voltage module is fastened to the high-voltage matching module or not can be accurately detected by using the detection piece, and the detection accuracy and the detection efficiency are improved.

An energy storage device, such as a lithium-ion battery, without tabs connecting the electrode jelly roll to the can, and a method for making the same, is described. A series of flags may be cut, bent, and interleaved with one another to form connection points for upper and lower collector plates within the can. The upper and lower collector plates can be welded directly to the interleaved flags to form connection points for the anode and cathode in the energy storage device.

The invention relates to the technical field of battery welding, and provides a battery device, a battery welding method and device, a power utilization device and computer equipment. The battery device comprises a plurality of battery monomers and electrode connecting sheets, and each battery monomer comprises a pole. The electrode connecting sheets are respectively connected with the poles of the plurality of single batteries through the welding parts, and the welding parts are in one-to-one correspondence with the poles. The target welding parameter of each welding part is set according to the position information of the corresponding pole, the distance between the geometric center of each welding part and the geometric center of the corresponding pole is smaller than or equal to a first preset threshold value, and the process capability index of the weld data of the multiple welding parts is larger than or equal to 1.67. According to the technical scheme, the adopted target welding parameters are dynamically adjusted according to the position information of all the pole columns, the geometric center height of the welding parts and the geometric center height of the pole columns coincide, the consistency of the welding quality of different welding positions in the battery device is improved, and all the welding parts in the battery device have stable and good mechanical performance and appearance forming.

The riveting structure of an electrode terminal for a battery includes a battery housing having a bottom; an electrode terminal riveted through a hole formed in the bottom of the battery housing; and a gasket between the electrode terminal and the battery housing. Also, the electrode terminal includes a body portion inserted into the hole; an outer flange portion extending along an outer surface of the bottom of the battery housing from a first side of the body portion exposed through the outer surface; an inner flange portion extending toward an inner surface of the bottom of the battery housing from a second side of the body portion exposed through the inner surface; and a flat portion on the second side of the body portion.

The invention relates to the technical field of batteries, and discloses a battery and a battery pack. The shell comprises a shell main body and a cover plate, at least one end of the shell main body is provided with an opening, the cover plate covers the opening and is electrically connected with the battery cell, the cover plate comprises a plurality of laminated plate bodies, the plate body far away from the battery cell is a first plate and the plate body close to the battery cell is a second plate along the lamination direction of the plurality of plate bodies, the first plate comprises a non-titanium metal element, and the second plate comprises a non-titanium metal element. The second plate comprises a titanium element, the conductivity of the metal element is larger than that of the titanium element, the ratio of the thickness d of the first plate to the thickness e of the second plate is a, the resistivity of the cover plate is b, the content of the titanium element in the second plate is c%, and the requirement that c * b / a is larger than or equal to 11 and smaller than or equal to 130 is met. By controlling the relationship among the content of titanium, the ratio of the thickness d of the first plate to the thickness e of the second plate and the resistivity of the cover plate, the over-current capability of the cover plate is improved, the resistance in the current transmission process is effectively reduced, and the temperature rise of the cover plate is prevented from being increased.

The present application provides a cylindrical cell, a battery device, and an electric device. The cylindrical cell comprises a casing and an electrode assembly; the electrode assembly is accommodated in the casing, and comprises a first electrode sheet and a second electrode sheet which have opposite polarities; and the first electrode sheet and the second electrode sheet are wound in a winding direction. The first electrode sheet comprises an electrode sheet body and a reinforcing coating; the electrode sheet body has a first area and a second area which are arranged adjacent to each other in the winding direction; the first area extends from a winding starting end of the electrode sheet body, and is provided with the reinforcing coating; and no reinforcing coating is provided in the second area. In the embodiments of the present application, the risk of deformation collapse of the first electrode sheet at a position near a central hole can be reduced without additionally adding other components to the interior of the cylindrical cell, thereby improving the use reliability of the cylindrical cell.

The utility model relates to the technical field of batteries, in particular to a battery. The battery core coating film comprises a film body which is provided with two film bodies opposite to the two side surfaces of a battery core in the thickness direction respectively; the supporting assembly is arranged on the surface, facing the battery cell, of the membrane body, the supporting assembly comprises a supporting piece and an elastic telescopic piece, the supporting piece comprises a central area and an edge area surrounding the central area, the central area is connected with the membrane body, and a gap is formed between the edge area and the membrane body; the elastic telescopic piece is arranged in a gap between the edge area and the membrane body, and the two ends of the elastic telescopic piece are connected with the membrane body and the supporting piece respectively. According to the battery disclosed by the utility model, the positive plate and the negative plate of the battery cell are stably attached through the supporting assembly, so that the service life of the battery is prolonged, and the satisfaction degree of a user is improved.

The present application relates to a 1.5V lithium battery and a manufacturing method thereof. The lithium battery includes a circuit assembly, a plastic frame, a wound battery core assembly, a first metal housing, a second metal housing, a first insulating seal and an insulating sheath. The wound battery core assembly is arranged in the second metal housing, the first metal housing and the second metal housing dock with each other and fixed by circumferential welding, and the circuit assembly includes a PCB, a low-voltage positive cap, a high-voltage positive connecting piece and a negative elastic piece. In the present application, the circuit assembly can stably output a low voltage of 1.5V. An upper end of the wound battery core assembly is located at a shallow position in the second metal housing is shallow, a length of the positive tab is shortened, the positive tab is not long enough to contact an inner wall of the metal housing, and the risk of a short circuit between the positive tab and the metal housing is completely addressed. The first insulating seal and the second insulating seal can prevent an electrolyte from leaking out or entering the first metal housing, thus guaranteeing stable electrical performance.

The invention provides an improved explosion-proof valve, a battery shell and a battery pack aiming at the problems that an existing explosion-proof valve is easy to crack in charge-discharge circulation and cannot be normally opened under extreme conditions. Annular and directional nicks are arranged on the valve plate of the anti-explosion valve to form a weak area, and the mechanical property is optimized and the structural strength and the pressure relief sensitivity are balanced by accurately controlling the nick size (a = c = b / 2, and d: c = (0.25-0.45)). The nick layout comprises transverse nicks, longitudinal nicks and oblique nicks, a multi-dimensional stress release network can be formed through combination, the response speed is increased, and the anti-fatigue performance is improved. The battery shell comprises the anti-explosion valve and is installed on a pressure relief hole in the bottom wall of the shell, electric arc discharge is avoided, and the space utilization rate and the overall protection performance are improved. The battery pack is composed of a battery shell, a pole group and an end cover, the explosion-proof valve is installed at the bottom, high-temperature gas is prevented from impacting electronic elements, the risk of secondary damage is reduced, meanwhile, a pressure relief channel is kept unblocked through gravity, and the safety of a battery system is remarkably improved.

An electrode assembly includes a first electrode current collector having a sheet shape, a second electrode current collector having a sheet shape, a separator interposed between the first electrode current collector and the second electrode current collector, the first electrode current collector, the second electrode current collector, and the separator being wound in a winding direction to define a center of the electrode assembly and an outer circumferential surface of the electrode assembly, and an insulation member. The first electrode current collector includes a first uncoated region in which an active material layer is not coated, the first uncoated region forms a plurality of winding turns, and the first coated portion is exposed beyond the separator. The insulation member covers an exposed curved surface of the first uncoated region disposed at an outermost winding turn at the outer circumferential surface of the electrode assembly among the plurality of winding turns.