4566results about "Cell sealing materials" patented technology

The invention relates to the technical field of batteries, and discloses a battery cell cover plate assembly, a battery cell and a battery pack. The battery cell cover plate assembly comprises a cover plate body and an anti-explosion valve. The cover plate body is provided with a pressure relief hole, and the pressure relief hole comprises a first hole section, a second hole section and a third hole section; the side wall of the first hole section protrudes out of the first surface to form a boss, the pressure relief hole further comprises a fourth hole section penetrating through the second surface, the fourth hole section is communicated with the third hole section, in the X direction, the inner diameter of the fourth hole section is smaller than the outer diameter of the side wall of the outer ring of the boss, and the cover plate body and the boss form a bent reinforcing structure. In the Z direction, the distance from the bottom wall of the fourth hole section to the first surface is a, in the X direction, the single-side distance from the side wall of the fourth hole section to the side wall of the outer ring of the boss is b, and a and b meet preset conditions. According to the invention, the problem of explosion-proof valve tearing caused by weak deformation resistance of the thin-wall cover plate can be solved, the risk of explosion-proof valve failure is reduced, liquid leakage of the battery cell is avoided, and the safety of the battery cell is improved.

The present invention discloses a front-terminal vertical wide-tab direct-connected bipolar lead-acid battery and an assembly method thereof. Specifically, a new battery structure is proposed, in which the busbars between the single compartments in a conventional battery are removed, and the connection between the single compartments is replaced by a bipolar plate connection method. The plates and separators are stacked horizontally into a battery slot layer by layer in a specific arrangement order, the tabs are widened, and a row of holes are punched in the middle of the tabs of the bipolar plates. After the lamination is completed, metal rods are inserted into the holes to connect the pole groups and tabs in parallel, the pole groups are locked with a pressing plate, and each monomer is sealed by glue injection. The two halves are then bonded into a whole by glue sealing or heat sealing, and the battery is turned into an upright state. The busbars at the turning points are welded, the terminals are welded, and the side covers are sealed to complete the battery assembly. This structure can greatly improve the high-current and high-rate discharge performance of the battery, and effectively solve the high-rate discharge and assembly problems of lead-acid batteries, providing key support for technological innovation, performance breakthroughs and market expansion of lead-acid batteries.

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.

The utility model relates to the technical field of batteries, and discloses a battery cell and a battery, the battery cell has a width direction and a thickness direction, the battery cell comprises a main body, an outer seal, an adhesive tape and a bonding piece, the outer seal comprises an accommodating area and an edge sealing area, and the main body is arranged in the accommodating area; the two opposite sides of the containing area in the thickness direction are provided with a first outer surface and a second outer surface respectively, and at least one side of the containing area in the width direction is further provided with a connecting side face. The edge sealing area is connected to one side, in the width direction, of the containing area, is bent towards one side of the first outer surface so as to be close to the connecting side face, and comprises two overlapped sealing edges; the adhesive tape covers and is adhered to the top ends of the two sealing edges; the bonding piece is at least partially bonded between the adhesive tape and the connecting side surface; the edge sealing area and the adhesive tape are both located between the first outer surface and the second outer surface. In the thickness direction, the distance between one end, facing the first outer surface, of the adhesive tape and the first outer surface is larger than or equal to 0 and smaller than or equal to 2 mm, and therefore the angular position falling performance of the battery cell can be improved.

The invention provides a cover plate assembly and a battery cell. The cover plate assembly comprises a top cover sheet, a fixing ring, an anti-explosion valve, a sealing element and a pressing ring, the top cover piece is provided with an anti-explosion hole penetrating in the first direction, and the inner wall of the anti-explosion hole is provided with a first limiting step. The fixing ring is fixedly connected with the top cover piece, an assembly space communicated with the explosion-proof hole is formed between the fixing ring and the top cover piece, and a notch which is sunken inwards in the radial direction of the fixing ring is formed in the inner edge of the fixing ring; the anti-explosion valve is positioned in the anti-explosion hole and is pressed on the first limiting step; the sealing element is positioned in the anti-explosion hole and is pressed on the anti-explosion valve; the outer edge of the pressing ring is provided with a stopping body extending outwards in the radial direction of the pressing ring. When the backstop body directly faces the notch in the first direction, the pressing ring can pass through the fixing ring; and when the stopping body and the notch are staggered, the fixing ring stops the pressing ring, so that the pressing ring is clamped in the assembly space. The problem that the explosion-proof valve of the battery cell cannot be disassembled after being assembled in the prior art is solved.

The invention provides a cover plate assembly and a battery pack. The cover plate assembly comprises a cover plate, a pole, a first sealing element and a second sealing element. The cover plate comprises a first metal piece and a second metal piece sleeved outside the first metal piece. The first metal piece is provided with a through hole. And the pole is arranged in the through hole in a penetrating manner. The first sealing piece is arranged between the pole and the first metal piece; and the second sealing piece is connected with the first metal piece, or the second metal piece, or the second sealing piece is arranged between the first metal piece and the second metal piece, or the second sealing piece is connected with the pole. The second sealing piece is configured to prevent the electrolyte from flowing between the first metal piece and the second metal piece. Therefore, electrochemical corrosion caused by the fact that the electrolyte intrudes into the area between the first metal piece and the second metal piece can be prevented, the safety of the cover plate assembly is improved, and the service life of the cover plate assembly is prolonged.

The present invention relates to a battery cell, a battery, and an electric device, which belong to the technical field of batteries. The battery cell includes a first casing wall, a pole, a first insulating seal, and a pad member. The pole includes a hole and a first extension, the first extension extending to the outside of the outer surface or the inside of the inner surface of the first casing wall, the hole and the first extension member constituting the first pole portion. The first insulating seal member is fitted between the first pole portion and the first casing wall. The pad member is provided between the first pole portion and the first casing wall and is used to buffer the force applied to the first insulating seal member by at least one of the first pole portion and the first casing wall.

The utility model discloses a secondary battery and a battery pack, and belongs to the technical field of batteries, the secondary battery comprises a shell, an electrode assembly and a cover plate assembly; the shell is provided with an accommodating cavity; the electrode assembly is arranged in the accommodating cavity and comprises a body and a tab which are connected with each other; the cover plate assembly comprises a cover plate, a plugging piece, an insulating piece, a pole and a connecting piece; the cover plate is connected with the shell and covers the containing cavity, the cover plate is provided with an operation opening penetrating through the cover plate, and the operation opening is communicated with the containing cavity; the plugging piece is connected with the cover plate and covers the operation opening; the insulating part is connected to one side, facing the electrode assembly, of the cover plate; the pole penetrates through the cover plate and the insulating part; the connecting piece is arranged in the containing cavity, the side, away from the electrode assembly, of the connecting piece is connected with the pole column, the tab is electrically connected with the connecting piece, and at least parts, on the cover plate, of the tab and the connecting piece are exposed out of the operation opening. According to the invention, after the electrode assembly is placed in the shell, the tab and the connecting piece are welded through the operation port, so that the manufacturing efficiency of the secondary battery is improved.

The invention provides an end cover assembly, a battery, a battery pack and electric equipment, and relates to the technical field of batteries. The end cover assembly comprises a terminal post, a cover plate and an insulation pressing piece, wherein the terminal post is in a long circle shape; a mounting table is formed on the surface of one side, back on to the interior of the battery, of the cover plate, and a mounting hole and a pressing flange which penetrate through the cover plate are arranged; the pressing turnup is provided with a bending part extending towards the pole, the pole is limited in the mounting hole, and the pressing turnup comprises a first side edge and a second side edge; the insulating pressing piece covers at least part of the surface of the bending part; the supporting convex ring and the bending part of the first side edge have a first overlapping area, the bending part of the first side edge and the insulating pressing piece have a second overlapping area, and the area S1 of the first overlapping area and the area S2 of the second overlapping area meet the condition that 0.15 < = S1S2 < = 300. According to the end cover assembly, by limiting the product range of the area of the first overlapping area and the area of the second overlapping area, the installation strength of the pole is optimized.

The invention belongs to the technical field of battery manufacturing, and provides a battery cover plate and a battery, the battery cover plate comprises a cover plate body, a sealing cover, a pole and a connecting sheet, and the cover plate body is provided with two welding through holes at intervals; the sealing cover is connected with the welding through hole to form a containing cavity, and the sealing cover protrudes from the cover plate body to the first side; the insulating inner cover is connected with the sealing cover through a clamping structure, and is positioned on the inner wall surface of one side, facing the accommodating cavity, of the sealing cover; the pole is arranged on the cover plate body and is provided with a first end part and a second end part, the first end part is positioned on the first side, and the second end part is positioned on the second side; one end of the connecting piece is connected with the second end part of the pole group, and the other end of the connecting piece is provided with a welding part which is positioned in the accommodating chamber. Through the arrangement of the welding through hole, the welding between the connecting sheet and the tab is realized, the problem of insufficient welding space in the related technology is solved, and the welding process is simplified.

The utility model provides a top cover subassembly, battery cell and battery pack, the top cover subassembly includes cover plate, pole post plate and sealant, the cover plate is equipped with the through hole, the through hole is used for intercommunication with the inside of battery cell, pole post plate is installed on the cover plate and covers the through hole, and the pole post plate is equipped with the first glue overflow groove at the position corresponding to the through hole, the notch of the first glue overflow groove faces towards the through hole, and the sealant is arranged in the first glue overflow groove. The sealing glue is clamped between the cover plate and the pole column plate, and the first glue overflowing groove is partially filled with the sealing glue. According to the top cover assembly provided by the utility model, the technical problem that the sealant in the existing top cover assembly is easy to overflow through the through hole in the cover plate can be solved.

The utility model provides a cover plate subassembly and battery, the cover plate subassembly includes the cover body, insulation support part and support piece, the cover body is equipped with the explosion-proof valve, the insulation support part and the cover body are arranged oppositely and are attached to each other, the insulation support part is equipped with the exhaust port corresponding to the explosion-proof valve, the support piece is installed on the insulation support part, and the support piece is attached to the explosion-proof valve. The supporting piece is located between the cover body and the core bag, and the melting temperature of the supporting piece is larger than that of the insulating supporting part, so that after the insulating supporting part is melted, the supporting piece can keep the structural integrity of the supporting piece, the cover body and the core bag are supported, the core bag is prevented from being directly and tightly attached to the cover body, and the risk that the anti-explosion valve is blocked is avoided; and normal opening of the explosion-proof valve is ensured to discharge high-temperature and high-pressure gas, so that the risk of battery cell explosion is greatly reduced.

Provided are an electrochemical cell and an electrochemical device that are easily manufactured and capable of retrofitting. The electrochemical cell includes: a first plate and a second plate between which an anode chamber and a cathode chamber are respectively formed on respective opposing inner surface sides thereof; and a sealing portion provided between the first plate and the second plate, in which the sealing portion includes plural frame bodies disposed at intervals from an inner side to an outer side, and plural sealing members disposed between the plural frame bodies and disposed in a compressed state between the first plate and the second plate. The electrochemical device includes the electrochemical cell.

The electrochemical device includes: a case including a recessed container having a bottom and a side wall, and a cap covering the opening of the recessed container; a power generation element including a laminate having an electrode layer, an electrode layer and a solid electrolyte layer laminated together and contained in the interior space of the case such that the bottom and electrode layer face each other; and a conductive plate located adjacent to the opening of the recessed container and positioned between the electrode layer and cap. The recessed container includes insertion holes with openings in the upper end surface of the side wall. The conductive plate includes elastic locking portions located on edges thereof and corresponding in position to the insertion holes. With each elastic locking portion inserted in an insertion hole, the tip portion of the elastic locking portion presses a side surface of the insertion hole.

Embodiments described herein relate generally to electrochemical cells having dual electrolytes, systems of such electrochemical cells, and methods for manufacturing the same. In some embodiments, electrochemical cells can include a cathode disposed on a cathode current collector, an anode disposed on an anode current collector, and a separator disposed therebetween. In some embodiments, the separator can include materials that fluidically and / or chemically isolate the anode from the cathode. In some embodiments, the cathode and / or anode can include a slurry of an active material and a conductive material in a liquid electrolyte. In some embodiments, the anode can be fluidically coupled to an anode degassing port. In some embodiments, the cathode can be fluidically coupled to a cathode degassing port.

The present invention relates to a multilayer conductive tape, including: an adhesive layer; an electrically conductive layer positioned on one side of the adhesive layer; an insulating layer positioned on one side of the electrically conductive layer; and a protective layer for protecting an outer surface of the insulating layer.

The utility model provides a shell assembly, a battery and a battery pack. The shell assembly comprises a shell, a cover plate assembly and a sealing piece, an opening is formed in one end of the shell, the cover plate assembly is connected with the shell and seals the opening, the sealing piece is arranged between the cover plate assembly and the shell, and the sealing piece bypasses the side edge face of the cover plate assembly and is connected with the cover plate assembly and the shell in a sealed mode. The first sealing part is buckled between the two opposite sides of the shell and the cover plate assembly, the second sealing part protrudes out of the shell, and the thickness T1 of the first sealing part and the thickness T2 of the second sealing part meet the relation that T1 / T2 is larger than or equal to 0.1 and smaller than or equal to 0.8. The thickness T1 of the first sealing part and the thickness T2 of the second sealing part are set to be larger than or equal to 0.1 and smaller than or equal to 0.8, so that the compression amount of the sealing piece can be controlled within a proper range, the sealing piece can achieve the sealing effect and cannot lose efficacy due to excessive compression, and therefore effective sealing between the shell and the cover plate assembly is guaranteed.

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.

The utility model discloses a button cell which comprises a positive pole shell, the positive pole shell comprises a supporting part and a corner part connected to the outer side of the supporting part, the corner part comprises a first turning section and a second turning section, the second turning section is connected between the supporting part and the first turning section, the range of a first curvature radius R1 of the first turning section is 0.5-0.85 mm, and the range of a second curvature radius R1 of the second turning section is 0.5-0.85 mm. The second curvature radius R2 of the second turning section ranges from 0.1 mm to 0.5 mm; the negative electrode shell comprises a covering part and a bent buckling part, the covering part and the supporting part are oppositely arranged, the bent buckling part has a third curvature radius R3, the range of the third curvature radius R3 is 0.1-0.3 mm, and the area, provided with the third curvature radius R3, of the bent buckling part is oppositely arranged with the first turning section; and the sealing sleeve is clamped between the corner part and the bent buckling part so as to realize sealing between the positive pole shell and the negative pole shell. According to the button cell disclosed by the utility model, due to the parameter setting of the R1, the R2 and the R3, enough sealing performance is realized between the positive pole shell and the negative pole cover, and the condition of liquid leakage after high temperature is avoided.

The invention discloses a new energy battery top cover, which comprises a cover plate body, a lower plastic insulation support, a positive electrode assembly, a negative electrode assembly, an explosion-proof valve and an explosion-proof valve protection paster, the positive electrode assembly comprises a positive electrode column, an upper welding aluminum block and a lower welding aluminum block, and the negative electrode assembly comprises a negative electrode column, an upper welding aluminum block and a lower welding copper block. And sealing rings are arranged in gaps among the cover plate body, the lower plastic insulating bracket, the positive electrode assembly and the negative electrode assembly. Integrated injection molding of the upper plastic for fixing the pole and other parts is changed into independent injection molding of the upper plastic, an injection mold and an injection molding process are simplified, a traditional riveting pole is divided into the upper welding aluminum block, the pole, the lower welding aluminum block or the lower welding copper block, welding and fixing are performed after assembly, the structure reliability is guaranteed, and meanwhile the reliability of the structure is improved. The assembly process flow is simplified, the assembly process difficulty is reduced, the assembly efficiency of the top cover is improved, the production cost is reduced, the battery space is released, and the energy density and the safety performance of the new energy battery are improved.

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.

To provide a battery capable of easily and effectively improving the drop performance of the battery without affecting the energy density or a production process of the battery.SOLUTION: The present invention provides a battery including a package bag, an electrode assembly 10, an adapter 20, and a sealing material 40. The electrode assembly is provided inside the package bag. The electrode assembly includes a first electrode piece 11, and a first electrode lug 110 electrically connected to the first electrode piece. A first end 21 of the adapter is connected to the first electrode lug, and a second end 22 of the adapter stretches out of the package bag. The sealing material is provided between the adapter and the package bag. Along a width direction of the battery, a width of the first electrode lug is more than or equal to a width of the sealing material. By improving a size relation between the first electrode lug and the sealing material, the penetration of the sealing material to the electrode piece in a drop process of the battery can be effectively prevented.SELECTED DRAWING: Figure 1

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 discloses a battery monomer, a processing method thereof, a battery and an electric device, and belongs to the technical field of batteries. The battery monomer comprises a shell part, a pole part and a battery core part, the shell part is provided with a containing cavity and comprises a first shell wall participating in limiting the containing cavity, the pole part is installed on the first shell wall and comprises a pole main body, the battery core part comprises at least one battery core group and an adapter, the battery core group comprises n battery core main bodies, the n battery cell main bodies are all arranged in the containing cavity and are sequentially arranged in the first direction, the end part of each battery cell main body is connected with a tab group, all the same-polarity tab groups of the battery cell group extend towards the middle position close to the battery cell group in the first direction and are connected to form a tab part, and the tab part is electrically connected with the pole main body through an adapter; n > = 1 and is a positive integer. Therefore, the reliability of the battery cells can be 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.

Disclosed is a secondary battery capable of improving sealing performance of a cell housing part including a case and a cap plate. The secondary battery includes an electrode assembly, including first and second electrode plates and a separator, a case accommodating the electrode assembly and electrically connected to the second electrode plate, a terminal mounted to the case configured to be electrically connected to the first electrode plate, a cap plate sealing an open top of the case, and a second gasket interposed between the case and the cap plate. The case includes a beading portion depressed inward and a crimping portion bent inward. A forming curvature calculated based on a bending amount of the crimping portion and a covering length of the crimping portion is different from a support strain calculated based on a depression depth of the beading portion and a cover overlapping length of the crimping portion.

The invention relates to the technical field of energy storage equipment, in particular to a battery cell cover plate and a battery cell, the battery cell cover plate comprises an insulating part, the insulating part is provided with M protruding parts, the M protruding parts are arranged in a protruding mode towards a pole group, the first end face of each protruding part abuts against the second end face of the pole group, the side edge of the first end face is provided with a recess to form a step face, and the step face is provided with a plurality of grooves. At least part of the step surface is arranged corresponding to the edge and the corner of the second end surface, and M is a positive integer. The battery cell comprises a pole group, a shell and the battery cell cover plate, the battery cell cover plate covers the opening of the shell in a sealing manner, and the pole group is arranged in a cavity defined by the shell. The battery cell cover plate and the battery cell are helpful for preventing the edges and the corners of the pole groups from being crushed by the insulating parts, and have higher process yield and safety performance.

A power storage device includes an electrode body, an electrode terminal connected to the electrode body, and an exterior body that seals the electrode body. The exterior body is configured from a film-like exterior member and includes a first sealing portion joined to the exterior member in a state where the exterior member envelops the electrode body. The exterior member includes a barrier layer. The power storage device has a resin film for a power storage device disposed at least partially inwards of the barrier layer. The resin film for a power storage device includes at least one among a water absorbent and a gas absorbent.