775results about "Large-sized cells cases/jackets" patented technology

The utility model provides a battery monomer, a battery device and a power utilization device, and belongs to the technical field of batteries. The battery monomer comprises a shell, an electrode assembly, an electrode terminal, a fixing piece and a first insulating piece, the electrode assembly is housed within the housing. The electrode terminal is disposed on a wall portion of the housing and is electrically connected to the electrode assembly. The fixing piece is arranged on the peripheral side of the electrode terminal, the fixing piece comprises a base part and a limiting part, the base part is connected to the wall part, the limiting part is connected to the base part and extends in the direction close to the electrode terminal, and the limiting part is configured to limit the electrode terminal to move in the direction away from the electrode assembly in the thickness direction of the wall part. And at least part of the first insulating part is arranged between the electrode terminal and the limiting part. The thickness of the limiting part is smaller than that of the base part. Therefore, the space for accommodating the first insulating part between the limiting part and the electrode terminal can be enlarged while the connection strength requirement of the base part and the wall part of the fixing part is met, so that the creepage distance between the limiting part and the electrode terminal can be increased.

A battery housing and a power battery. The battery housing comprises cover plates and a casing (4). The casing (4) is of a hollow structure having openings, the cover plates are provided with connecting bosses (3), and the connecting bosses (3) are inserted into the openings of the casing (4), so that the cover plates close the casing (4) to form an accommodating cavity (8). A weld seam (9) is formed at the junction of the casing (4) and each cover plate, the weld seam (9) has a weld width n, the thickness of the area of the cover plate in which the connecting boss (3) is provided is a, and a weld width ratio is X=n / a, with a range of 0.16≤X≤1.

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.

A battery cell, a battery and an electric device. The battery cell (100) comprises a casing (110), an electrode assembly (120), an isolating structure (170), and an insulating piece (160), wherein the casing (110) is provided with an inner cavity and a first wall (111); the electrode assembly (120) is arranged in the inner cavity, the isolating structure (170) is at least partially located between the first wall (111) and the electrode assembly (120), and the isolating structure (170) is provided with a first through hole (150); and the insulating piece (160) comprises a first portion (161), and the first portion (161) covers the first through hole (150). In the battery cell (100), the first portion (161) of the insulating piece (160) covers the first through hole (150), such that the probability of powder on one side of the electrode assembly (120) moving to one side of the first wall (111) through the first through hole (150) is reduced to a certain extent, thereby improving the reliability of the battery cell (100).

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 discloses a battery which comprises a battery cell main body, a bottom adhesive layer and a head adhesive layer, the battery cell main body comprises a top surface and a bottom surface, and a first side surface, a second side surface, a third side surface and a fourth side surface which are positioned between the top surface and the bottom surface and are sequentially connected end to end along the circumferential direction, the step face comprises a first side face area, a vertical face area and a second side face area which are sequentially connected, and the second side face area protrudes outwards relative to the first side face area. The bottom adhesive layer is positioned at the bottom of the battery cell main body, and a first notch is formed in a position close to or corresponding to the vertical surface area; the head adhesive layer is positioned at the top of the battery cell main body, and a second notch is formed in a position close to or corresponding to the vertical surface area. The battery can be matched with a battery compartment structure with a local bulge through the stepped surface, so that the space utilization rate of a complete machine end is improved, and the battery capacity is improved.

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 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.

Housing (1) for a battery cell arrangement, in particular for use in an electrically powered motor vehicle, comprising: at least one first housing part (2); and at least one second housing part (3), which second housing part (3) is or can be detachably connected to the first housing part (2); in which, in a connected state, a housing interior (5) for accommodating a number of battery cells (11) is formed between the first housing part (2) and the second housing part (3); in which at least one of the two housing parts (2, 3) has the following structure: a first cover layer (2a, 3a) made of sheet metal; a second cover layer (2b, 3b) made of sheet metal; an intermediate layer (2c, 3c) arranged between the first cover layer (2a, 3a) and the second cover layer (2b, 3b) made of a shear and compression-resistant, formable material, which material is permanently connected to the cover layers (2a, 2b, 3a, 3b); in which at least one of the cover layers (3a) is formed from at least two adjacent metal sheets (3aa, 3ab), of which at least one (3ab) has a structure, so that channels (6, 6', 6") for a heat-conducting fluid for dissipating heat from the housing (1) are formed between the two metal sheets, in which a supply line (8) and a discharge line are formed on at least one of the two metal sheets (3aa) for supplying a heat conduction fluid to the channels (6, 6', 6") and for discharging a heat conduction fluid from the channels (6, 6', 6").

The invention relates to the technical field of lithium battery manufacturing, and discloses a quality control method for an automatic stamping process of a lithium battery shell. According to the method, a multi-dimensional monitoring system is constructed by collecting a stamping pressure time sequence waveform, plate thickness distribution data and a mold vibration frequency spectrum signal in real time. Analyzing the pressure waveform deviation by using a dynamic time warping algorithm, and forming a coupling characteristic matrix by combining the thickness data; wavelet packet decomposition is adopted to process the vibration signal, a frequency band energy distribution spectrum is generated, and a mold structure stability coefficient is calculated. And fusing the characteristics and the coefficients to generate a quality evaluation index, and dynamically adjusting the control parameters of the stamping equipment according to the quality evaluation index to realize closed-loop control. According to the method, the limitation of single parameter monitoring is broken through, dynamic changes in the stamping process are accurately captured through multi-source information coupling analysis, factors such as plate differences and die state changes can be responded in real time, and the comprehensiveness and timeliness of quality control are improved.

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 and a cover plate assembly, the shell body is a hollow shell mechanism with an opening at one side, the cover plate assembly comprises a cover plate body, a first insulating part and a composite pole, the cover plate body is arranged at the opening of the shell body and seals the shell body, and the composite pole is arranged on the first insulating part. The cover plate body is used for forming an accommodating cavity for accommodating a pole group, the cover plate body is provided with a first penetrating structure through which a lug extends out of the accommodating cavity, the first insulating part is arranged on the cover plate body in an injection molding manner and is used for isolating the cover plate body from the lug, and the composite pole column is arranged on one side, deviating from the pole group, of the cover plate body and realizes current conduction with the lug. Through the arrangement of the first penetrating structure, the tab can realize current conduction with the composite pole located on the outer side of the accommodating cavity through the first penetrating structure, so that the space occupied by the composite pole and the space for connecting the bent tab with the composite pole are saved, the extra space occupation is reduced, the volume of the pole group can be further increased, and the energy density is improved.

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

A thermal management method of a battery wherein the battery comprises at least one cell, and wherein a heating device is configured to heat the battery in response to a heating instruction. The method comprises the following steps: determining the charge state of the battery cell and the battery cell current of the battery cell; a first value of a first parameter of the heating device; a reference cell temperature of the cell; the maximum battery cell temperature and the minimum battery cell temperature of the battery cell are obtained. Under the condition that the maximum battery cell temperature is lower than a first threshold temperature; the minimum cell temperature of the cell is lower than a second threshold temperature; the charge state of the battery cell is higher than a charge state threshold value; the method also includes instructing a heating device to heat the electrical core.

The utility model provides a shell assembly, a battery and a battery pack. The shell assembly comprises a shell and a cover plate assembly, the shell is used for containing the battery cell assembly, the cover plate assembly is connected with one end of the shell, the cover plate assembly comprises a first protruding part protruding in the direction away from the shell and a sunken part sunken in the direction close to the shell, and the sunken part is used for abutting against the battery cell assembly. The first convex part, the concave part and the shell are used for enclosing with the battery cell assembly to form a first air chamber. The first gas chamber is formed in the shell assembly, so that the first gas chamber can store the gas generated by the battery cell assembly in the shell when the shell assembly is put into use, the gas storage capacity of the shell assembly is improved, the safety of the shell assembly is improved, and the service life of the shell assembly is prolonged.

The invention provides a shell assembly, a battery, a battery assembly and electronic equipment, and relates to the technical field of electronic equipment, a shell of the shell assembly is provided with an accommodating cavity, the accommodating cavity is suitable for accommodating a pole core assembly, the shell is provided with a first mounting part, the first mounting part sinks towards the accommodating cavity, and the first mounting part is provided with a second mounting part; the second installation part sinks towards the containing cavity and is suitable for containing the circuit board assembly. According to the shell assembly provided by the invention, the increase of the total height of the shell assembly by the circuit board assembly can be reduced, and the space occupancy rate of the shell assembly and the battery is reduced.

A battery cell (7), a battery (2), and an electrical apparatus. The battery cell (7) comprises an end cover (30), a casing (20), and a first connecting member (6). The casing (20) has a first opening, the end cover (30) covering the first opening. The first connecting member (6) is formed by protruding outwards in the circumferential direction of the casing, is connected to the end cover (30), and is used for bending outwards in the circumferential direction of the first opening so as to absorb the deformation of the casing (20). Configuring the first connecting member (6) to connect the end cover (30) to the casing (20) improves the strength and stability of connection between the end cover (30) and the casing (20). In addition, the first connecting member (6) can bend outwards in the circumferential direction of the first opening, so as to adapt to the deformation of the casing (20) caused by the squeezing of a swollen electrode assembly, thereby reducing the risk of cracking a welding joint between the end cover (30) and the casing (20), and improving the operation stability of the battery cell (7).

The embodiment of the invention provides a top cover assembly, a pole piece, a battery monomer, a battery and an electric device, and belongs to the technical field of batteries. The top cover assembly comprises a top cover and a pole, the top cover comprises a top cover main body part and first bent sections, and the two ends of the top cover main body part are connected with the first bent sections bent relative to the top cover main body part; the electrode terminal comprises a pole, and the pole is installed on the first bending section. According to the invention, the transverse space of the battery monomer can be fully utilized, the consumption of the pole to the longitudinal size of the battery monomer is reduced, and under the condition that the size of the battery monomer is fixed, the cell volume of the battery monomer is increased, and the space utilization rate of the cell to the battery monomer is improved, so that the energy density of the battery monomer is improved.

The present application relates to the technical field of batteries, and discloses a battery cell and a battery pack. The battery cell comprises a casing and an explosion-proof valve; the casing is provided with an accommodating cavity; the casing comprises a plurality of sidewalls that are used for defining the accommodating cavity; the sidewalls are provided with a pressure relief hole communicated with the accommodating cavity; the explosion-proof valve covers and seals the pressure relief hole; the explosion-proof valve comprises a body and a base; the body is provided with a notch; the body comprises an elastic strain portion; the elastic strain portion is arranged around at least part of the notch; the base surrounds the body, and the base is separately connected to the body and the sidewalls; the elastic strain portion is used for generating elastic deformation in the direction from the base to the notch. According to the present application, the explosion-proof valve comprising the elastic strain portion is arranged in the pressure relief hole on the casing, so as to prevent welding deformation from being generated when welding the explosion-proof valve to the casing, thereby preventing the opening pressure change of the explosion-proof valve, and further improving the safety of the battery cell.

A top cover assembly, an electrode sheet, a battery cell, a battery, and an electric device, relating to the technical field of batteries. The top cover assembly comprises: a top cover and poles, wherein the top cover comprises a top cover main body portion and first bent sections, and the two ends of the top cover main body portion are connected to the first bent sections bent relative to the top cover main body portion; and an electrode terminal, comprising poles, wherein the poles are mounted on the first bent sections.

The invention discloses a battery shell, a battery, a battery device and electric equipment, the battery shell comprises a shell and a pressure relief assembly, the shell is provided with a first through hole, and the first through hole penetrates through the wall surface of the shell; the pressure relief assembly is suitable for covering the first through hole and comprises a pressure relief piece and a connecting piece, the pressure relief piece comprises a sealing piece, the sealing piece is suitable for being melted or softened to form a pressure relief channel communicating the interior and the exterior of the shell when the temperature in the shell reaches a threshold value, the connecting piece is provided with a welding part, and the pressure relief piece is in welded connection with the shell through the welding part; the minimum distance d between the sealing piece and the welding part is larger than or equal to 0.3 mm. The minimum distance between the sealing element and the welding part is designed to be more than 0.3 mm, so that a relatively long high-temperature conduction path is formed, the thermal load borne by the sealing element is remarkably reduced, the sealing element is ensured to keep good sealing performance in the whole life cycle of the battery, and meanwhile, the safety pressure relief reliability of the battery under extreme working conditions such as thermal runaway is improved.

Systems and methods are provided to vent a battery pack using a pressure release valve. The pressure release valve comprises a housing configured to be secured to an outer surface of a sidewall of a battery pack. A first membrane is arranged in a first side of the housing. A second membrane in a second side of the housing and adjacent to the first membrane.

The invention relates to a membrane assembly, comprising a bursting membrane and comprising at least one reinforcing frame, wherein the reinforcing frame is connected to the bursting membrane, wherein the reinforcing frame connected to the bursting membrane is designed to be inserted into a cell housing on the inside and to be connected to the cell housing on the outside by a thermal joining method. The invention further relates to a method for connecting a bursting membrane to a battery cell housing, and to a battery cell having a membrane assembly.

The invention relates to the technical field of batteries, and provides a terminal structure, a top cover assembly, a shell assembly, a single battery cell and a battery pack. The terminal structure includes a post assembly and a seal. The pole assembly comprises a main body part, and a first connecting part and a second connecting part which are annularly arranged on the periphery of the main body part and are arranged at intervals. The sealing piece is connected to the main body part in a sleeving mode and located between the first connecting part and the second connecting part. One of the first connecting part and the sealing piece is provided with a first protruding part which protrudes towards the other one, and the first protruding part abuts against the other one; and / or one of the second connecting part and the sealing piece is provided with a second protruding part protruding towards the other one, and the second protruding part abuts against the other one. Therefore, sealing or insulation failure caused by creep deformation of the sealing element can be prevented, the service life of the sealing element is prolonged, and the sealing performance of the battery in the long-cycle-life use process is ensured.

A method for manufacturing a pouch-type secondary battery according to an embodiment of the present invention may include: a first sealing operation of fusing a lead film, which is attached to an electrode lead of an electrode assembly, to a sealing portion of a pouch in which the electrode assembly is accommodated; and a second sealing operation of sealing the sealing portion of the pouch. The first sealing operation may include: a heating process of irradiating with a laser beam a region which is present in the sealing portion of the pouch and corresponds to the lead film, thereby heating the lead film and melting a resin layer of the region; and a bonding process of compressing the region, thereby bonding the lead film and the melted resin layer.

A button-type secondary battery includes an electrode assembly; a lower can having an accommodation space in which the electrode assembly is accommodated; an upper can coupled to the lower can to cover the accommodation space; a gasket sealing a gap between the lower can and the upper can and to electrically insulate the lower can from the upper can while being inserted into a coupled portion of the lower can and the upper can; and a first electrode tab including a first coupling part coupled to a first electrode of the electrode assembly and a second coupling part coupled between the gasket, which is disposed at the coupled portion of the lower can and the upper can, and the upper can. The second coupling part is coupled between the gasket and the upper can by a pressure generated when the lower and upper cans are coupled to each other.

A secondary battery according to an embodiment of the present disclosure includes a jelly roll electrode assembly in which a cathode sheet, an anode sheet, and a separator interposed between the cathode sheet and the anode sheet are wound together; and a battery case to which the jelly roll electrode assembly is mounted, wherein the battery case is configured such that a flow path recessed toward the center of the jelly roll electrode assembly is formed in the lower part of the battery case, wherein the flow path comprises a first flow path and a second flow path located in the center of the first flow path, and wherein an upper part of the second flow path is opened toward the upper part of the first flow path.

A secondary battery cell according to an embodiment of the present disclosure may include: a case forming an inner space and including an opening on at least one side thereof; an electrode assembly arranged in the inner space and having a negative electrode and a positive electrode alternately stacked with a separator therebetween; a cap plate arranged to cover the opening; and a vent portion that is opened when the inner space reaches a preset pressure range, and includes a base and a notch portion formed in the base, wherein the notch portion satisfies relational expression 1 with the base. 1.2<100*b*c / a<2.9 (a: Thickness of base, b: Width of notch portion, and c: Thickness of notch portion)

The utility model provides a battery shell, battery monomer and electric equipment, relates to battery technical field, the battery shell includes shell frame and soft envelope, said soft envelope with shell frame seal connection to form the shell structure, said shell structure has internal cavity and with the opening of said cavity intercommunication, said shell frame is sealed with the soft envelope, said soft envelope is sealed with said cavity. The opening is formed in the shell frame, and at least one face of the cavity is provided with the soft wrapping film. According to the utility model, an enough deformation range is provided for expansion generated in the rapid charging process of the battery monomers, so that the service life of the battery shell is correspondingly prolonged on the basis of ensuring the structural integrity of the battery shell.