640results about "Cell sealing materials" patented technology

An end-cover assembly, an energy storage apparatus, and an electricity-consumption device. For the end-cover assembly, an end cover defines a mounting hole. The mounting hole extends through the end cover in a thickness direction of the end cover. For a terminal-post assembly, a terminal post includes a post-body portion. The post-body portion passes through the mounting hole. The post-body portion is provided with at least one first annular structure. The at least one first annular structure is disposed on a peripheral surface of the post-body portion and is disposed around the post-body portion. The sealing ring is sleeved on the post-body portion, covers the at least one first annular structure, and is clamped between the end cover and the terminal post. An upper plastic member is sleeved on the post-body portion and is connected between the post-body portion and the end cover.

A battery pack includes a battery cell and a protection circuit module connected to the battery cell, wherein the battery cell includes an electrode assembly and an electrode tab extending from the electrode assembly, wherein the protection circuit module includes a substrate and a substrate tab connected to the substrate, wherein the electrode tab includes an electrode sealing portion extending from a housing of the electrode assembly and an electrode bending portion extending from the electrode sealing portion, and wherein the substrate tab is formed to be arranged between the electrode bending portion and the substrate and formed to be in contact with the electrode bending portion and the substrate.

A battery cell of the present invention comprises: an electrode assembly in which a first electrode, a second electrode, and a separator therebetween are wound around a winding axis; a can configured to accommodate the electrode assembly through an open end portion formed at one side thereof; and a lid covering the open end portion, wherein the lid may comprise: an edge portion coupled to the can and having a protrusion forming a step; and a vent portion configured to break when a thermal event occurs in the battery cell, and including, on the basis of the circumferential direction of the lid, a first region in which a vulnerable portion is formed and a second region in which no vulnerable portion is formed.

The present disclosure relates to a secondary battery, a device for manufacturing a secondary battery, and a method of manufacturing a secondary battery. The secondary battery includes an electrode assembly and a case including a body portion accommodating the electrode assembly, a cover covering an opening of the body portion, and a sealing portion if formed where outer surfaces of the body portion and the cover contact each other to thereby seal the electrode assembly in the case. The sealing portion includes a top sealing portion extending in a first direction from an upper surface of the case; side sealing portions each of which extend from a side surface of the case in (i) a second direction that intersects the first direction or (ii) a direction opposite to the second direction. A corner sealing portion folded in the first direction when the top sealing portion and the side sealing portions are folded in a third direction intersecting the first direction and the second direction.

A power storage device 10 comprises a case 20, a power storage element 30, a belt-like lead 41, and an opening-sealing member 50. The opening-sealing member 50 is provided with: an insulating gasket 51 having a base part 53; and an electroconductive opening-sealing plate 56. The opening-sealing plate 56 has a displacement part 57. The displacement part 57 of the opening-sealing plate 56 and the lead 41 are electrically connected to each other. By displacement of the displacement part 57 in a direction separating away from the lead 41 in response to a rise in internal pressure inside the case 20, the displacement part 57 and the lead 41 are electrically disconnected from each other. The storage device 10 further comprises a displacement suppression means 43 that is disposed in the case 20 and that suppresses displacement of the lead 47 when the displacement part 57 is displaced in the direction separating away from the lead 41. Accordingly, the operation reliability in an electric current cutoff mechanism is enhanced.

A battery packaging structure includes a battery cell, a tab and a packaging film, the battery cell is accommodated in the packaging film, the tab extends from an end of the battery cell, the tab includes a connection area, a packaging area and an exposed area connected in sequence, the connection area is electrically connected to the battery cell, and the exposed area is exposed to the packaging film; the battery packaging structure further includes a packaging part and a protection part arranged separately, and the packaging part and the protection part are both insulated. The packaging part is connected to the protection part, the packaging part covers and contacts the packaging area, the packaging part is located between the packaging film and the packaging area and contacts the packaging film to seal the packaging film, the protection part is located between the connection area and the packaging film, an area of the protection part is greater than an area of the connection area, and the protection part is bonded to the connection area to improve safety and reliability of the battery packaging structure.

This disclosure relates to an insulating member for a secondary battery and a secondary battery including the insulating member. The secondary battery includes an electrode assembly, a housing housing the electrode assembly, a cover plate including terminals electrically connected to the electrode assembly and engaged with the housing, and an insulating member disposed within the housing between the electrode assembly and the cover plate. The insulating member includes a first body and a second body, and a connecting body. The first and second bodies are positioned adjacent to each other in a longitudinal direction. The connecting body is located between the first and second bodies and includes a first groove into which at least a portion of the first body is inserted and a second groove into which at least a portion of the second body is inserted.

The application discloses a battery monomer, a battery device and a power utilization device, and relates to the technical field of batteries. The battery monomer comprises a shell assembly, an electrode assembly and a pole post assembly, the pole post assembly comprises a pole post main body and an adapter, the adapter is welded with a first shell wall, at least one identification part is formed on the side surface of the adapter away from the accommodating cavity, the identification part is arranged between the outer circumferential edge of the pole post main body and the outer circumferential edge of the adapter in the radial direction of the adapter, the identification part is configured to be visually detected and identified, the surface roughness of the identification part is smaller than the surface roughness of the remaining part of the side surface of the adapter away from the accommodating cavity except the identification part, and the surface roughness of the remaining part of the side surface of the adapter away from the accommodating cavity except the identification part is smaller than the surface roughness of the outer circumferential wall of the adapter. Therefore, the position grasping accuracy of the outer circumferential edge of the adapter can be improved through the identification part, the welding quality of the adapter and the first shell wall is improved, and the reliability of the battery monomer is improved.

The application relates to the battery technical field and provides a cover plate assembly. The cover plate assembly of the application comprises a cover plate body of a pole post assembly, first and second connecting sheets arranged at two ends of the pole post assembly, a plastic assembly and a sealing element. The cover plate body is used for fixed connection with two opposite battery cell housings. The plastic assembly comprises a first plastic plate and a first plastic ring and a second plastic plate and a second plastic ring. The cover plate assembly of the application can realize direct series connection of two battery cells, is beneficial to reducing the cost of the battery cells, is beneficial to improving the space utilization rate of a battery pack, the structure of the pole post assembly is beneficial to assembly of the pole post assembly, the cover plate body, the first plastic plate and the second plastic plate, the assembly efficiency of the cover plate assembly can be improved, and the sealing element is beneficial to improving the sealing performance of the cover plate assembly at the pole post assembly.

A secondary battery according to an embodiment of this specification includes an electrode assembly, an exterior film having an inner space, in which the electrode assembly is accommodated, and an exterior opening, through which the inner space communicates with the outside, a cover member configured to cover the exterior opening of the exterior film, and a gasket member disposed between the cover member and the exterior film, wherein the gasket member is provided with a plurality of cover sealing parts that are in contact with the exterior film, and the exterior film is provided with a film sealing part on any one surface of surfaces perpendicular to the exterior opening, wherein IDV defined as a factor is 0.5 or more. The secondary battery may induce the ventilation direction to ensure safety.

The present invention provides a battery cell (20), a battery (100), and a power consumption device, wherein the battery cell (20) is a case assembly (21) including a housing (211) and poles (212), the housing (211) having a first wall (2111) provided in the first wall (2111) having a through hole (2112), the poles (212) being installed so as to penetrate the through hole (2112), the poles (212) having a via hole (2121), the via hole (2121) is provided in the poles (212) The electrode assembly (22) includes a case assembly (21) that penetrates and connects the inside and outside of the housing (211), and an electrode assembly (22) provided inside the housing (211), wherein the electrode assembly (22) has a conductive portion (221), the conductive portion (221) is installed to penetrate a via hole (2121), and a first connection portion (23) is formed between the electrode assembly (22) and the via hole (2121), the first connection portion (23) sealing the via hole (2121).

To improve the energy density of secondary batteries and to manufacture them stably. [Solution] The method for manufacturing a secondary battery comprises the steps of: first manufacturing a first electrode body 201 and a second electrode body 202, then arranging the first electrode body 201 on one side of the second current collector 420 and the second electrode body 202 on the other side of the second current collector 420, and electrically connecting the second electrode tab 250 and the fourth electrode tab 280 to the second current collector 420; and after joining the second electrode tab 250 and the fourth electrode tab 280, bending the second electrode tab 250 and the fourth electrode tab 280 so that the first electrode tab 220 and the third electrode tab 270 face each other, thereby overlapping the first electrode body 201 and the second electrode body 202.

A cap assembly and a battery cell. The cap assembly comprises a sealing sleeve (100) and a top cap (200). The sealing sleeve (100) comprises a support portion (110) and an insulating portion (120), wherein the insulating portion (120) encloses the circumferential edge of the support portion (110); the support portion (110) is provided with a first through hole (111), and the top cap (200) is fitted and mounted at the first through hole (111); and the circumferential outer wall of the insulating portion (120) is provided with an annular flange (121); an annular mounting groove (122) configured to accommodate a top end (11) of a battery casing (10) is formed between the annular flange (121) and the circumferential outer wall of the insulating portion (120); and the circumferential inner wall of the battery casing (10) can be connected to the circumferential outer wall of the insulating portion (120) in a sealed manner.

The utility model provides a novel square cover structure, include: top cover piece, be provided with the installation platform on top cover piece, the installation platform is provided with the clamping portion and the bending portion who connects each other, the lower plastic, the lower plastic sets up the top cover piece directly below, be provided with the welding ring and the sealing ring of clamping in the welding ring on the lower plastic, wherein, top cover piece with lower plastic between be provided with the positive pole column and the negative pole column. The utility model provides a novel square cover structure, places the positive pole column or the negative pole column respectively in the axle center place of installation platform, pours into the supporting space to the colloid through the mould, supports the positive pole column or the negative pole column after cooling, improves the support fixed effect to the pole column through the clamping portion and the bending portion, reduces the shrinkage phenomenon of colloid flow not good to cause simultaneously, then in turn the sealing ring and the welding ring assembly to the pole column, and the outer ring of welding ring is welded, finally makes the lower plastic with top cover piece clamping, to complete the assembly to top cover assembly.

The utility model belongs to the battery field, concretely is a kind of single battery and battery pack.Overcome the technical problem of poor installation stability of each single battery in the existing battery pack.Single battery, including shell, shell is enclosed by upper cover plate, cylinder and lower cover plate;At least one of upper cover plate, cylinder and lower cover plate is provided with connecting piece.Battery pack is constituted by multiple single batteries, and connecting piece at corresponding position in adjacent single battery is connected each other.The utility model sets up connecting piece on single battery shell, in battery pack, two adjacent single batteries can be connected by connecting piece, improve the stability of single battery in box, make the structure of whole battery pack more stable and durable.

The nonaqueous electrolyte secondary battery according to the present application includes a storage container having a positive electrode can, a gasket, and a negative electrode can, and a power generating element containing an electrolyte. The positive electrode can is formed in a bottomed cylindrical shape having a bottom wall portion and an outer wall portion. The negative electrode can is formed in a toped cylindrical shape having a top wall portion and an inner wall portion. A portion of the outer wall portion on the top wall portion side is a calked portion 12b that is curved toward the inner wall portion side with a curvature radius R from the bottom wall portion side to an opening end edge of the outer wall portion. The nonaqueous electrolyte secondary battery has a diameter of 4.6 mm to 5.0 mm. A height H2 of the positive electrode can is in a range of 74% to 79% relative to a height H1 of the nonaqueous electrolyte secondary battery. The curvature radius R of the calked portion is in a range of 0.7 mm to 1.1 mm.

This application provides a battery cell, a battery device, and an electrical device. The battery cell includes a casing, an electrode assembly, electrode terminals, and a sealing component. The casing includes a first wall and a receiving cavity. The electrode assembly is placed in the receiving cavity and includes tabs. The electrode terminals are disposed on the first wall and used for electrical connection with the tabs. The electrode terminals include a first connecting portion, which is at least partially disposed on the side of the first wall facing the electrode assembly. The sealing component is at least partially located between the first connecting portion and the first wall. The first connecting portion includes a thickened portion and a main body portion. The thickened portion protrudes from the side of the main body portion facing the electrode assembly and is electrically connected to the tabs via a first solder joint. By adding a thickened portion to the first connecting portion, the distance between the first solder joint and the sealing component along a first direction can be increased, reducing the risk of the sealing component being burned and improving the service life of the battery cell.

A battery cell according to an embodiment of the present disclosure includes an electrode assembly including electrode leads, a cell case having a cell terrace on one side where the electrode leads are disposed and accommodating the electrode assembly, and a heat transfer prevention pad disposed on the cell terrace of the cell case. The battery cell according to an embodiment of the present disclosure has the effect of delaying thermal propagation to adjacent cells through a heat transfer prevention pad in the event of thermal runaway.

The utility model discloses a kind of ventilation structure of sodium ion battery, belong to sodium ion battery technical field, including battery shell and battery cover, the movable joint has cap on the battery cover, gas-permeable membrane and sealing ring are equipped between the cap and battery cover, the sidewall of the cap is connected with multiple second clamping pieces, the sidewall of the battery cover is opened with multiple second clamping grooves, and multiple second clamping pieces are opposite with multiple second clamping grooves, multiple accommodating grooves are opened on the sidewall of the cap;Through the cooperation between above each device, cap is clamped on battery cover, when removing cap, cap stress will pull second clamping piece and be deformed, accommodating groove reserves space for the deformation of second clamping piece, can remove cap from battery cover, it is convenient to replace gas-permeable membrane and sealing ring, then battery cover is clamped on battery shell by first clamping piece, by pushing push block, the limiting of first clamping piece to battery cover can be removed, and battery cover is opened.

The present invention relates to a housing comprising at least two housing parts (10, 20). The housing comprises a first housing part (10) and a second housing part (20), wherein the first housing part (10) has a first flange section (11), and wherein the second housing part (20) has a second flange section (21). The first housing part (10) and the second housing part (20) are sealedly connected to each other by means of a sealing element (30) positioned between the first flange section (11) and the second flange section (21) to seal an interior space (50) of the housing against an exterior space (60). The sealing element (30) has a sealing section (31), wherein the sealing section (31) is elastically deformable. The sealing element (30) has a drip edge (32), and the drip edge (32) is connected to the sealing section (31).wherein the sealing section (31) is compressed between the first flange section (11) and the second flange section (21) and seals against the first flange section (11) and the second flange section (21), wherein the drip edge (32) forms a side of the sealing element (30) facing the outside space (60), and wherein the drip edge (32) forms an inclined drainage surface for draining liquid.

A battery according to an embodiment of the present disclosure may include an electrode assembly; a battery housing configured to accommodate the electrode assembly through an opening formed on one side; a cap configured to cover the opening of the battery housing; and a gasket interposed between the cap and the inner surface of the battery housing and at least partially compressed, and having a protrusion on a surface facing the cap that protrudes in a direction toward the cap based on a state before being compressed.

This document provides a secondary battery, a method for manufacturing a secondary battery, and a battery pack including the secondary battery. The secondary battery includes: a housing having an internal space; a cover assembly including a cover for closing the housing and terminals supported by the cover; a current collector located in the internal space and electrically connected to the terminals; an electrode assembly housed in the internal space; and a plurality of electrode tabs protruding from the electrode assembly, each of the plurality of electrode tabs including: a root portion connected to the electrode assembly; a weld portion welded to the current collector and offset to one side relative to the position of the root portion; and a middle portion connecting the root portion and the weld portion, and having a peak offset to the opposite side of the first side.

A system for incorporating one or more individual energy cells is provided. The individual energy cells include a top surface having a central terminal and an outer terminal. The top surface may include a pressure dissipation element configured to dissipate pressure in a direction opposite the bottom surface. The first terminal and the second terminal may be substantially planar electrical contacts.

Pouch battery comprising: a battery cell; a packaging film comprising a main body and two fold-edge structures, each connected to two opposing side faces of the main body in a width direction; wherein the main body has a receiving cavity and the battery cell is arranged in the receiving cavity;Each of the fold-edge structures comprises a first fold section, a second fold section, and a third fold section, wherein a first end of the first fold section is connected to a side face of the main body, a second end of the first fold section is connected at a first fold point to a first end of the second fold section, a second end of the second fold section is connected at a second fold point to a first end of the third fold section, the first fold point and the second fold point are arranged between a top and a bottom of the main body in a thickness direction of the battery cell, and a minimum distance between the third fold section and the battery cell in the width direction L is 0.3 mm ≤ L ≤ 2.5 mm; a fixing adhesive is arranged between the third fold section and the side face of the main body to fix the third fold section relative to the main body.

A non-aqueous electrolyte secondary battery includes: an electrode assembly; a rectangular outer casing; a sealing plate; an electrode terminal on the sealing plate; a first current collector connected to the electrode terminal; a second current collector connected to the first current collector; and a tab group connected to the second current collector. The second current collector is a flat plate, and includes a fuse portion having a slit extending in a lateral direction of the flat plate. The tab group is connected to the second current collector at a position closer to one side in the lateral direction, and is bent at a connection portion with the second current collector such that the bent tab group extends parallel to the side wall. The fuse portion includes a portion with a large sectional area on the other side of the slit in the lateral direction.