8658results about "Cell sealing materials" patented technology

The invention provides a rapid welding storage battery busbar structure and a manufacturing process, and relates to the field of lead-acid storage batteries, the rapid welding storage battery busbar structure comprises a plate group, a non-lead metal strip, a non-lead metal positive terminal and a non-lead metal negative terminal, the non-lead metal strip and the non-lead metal positive terminal are made of metal or alloy with the conductivity higher than that of lead, and the non-lead metal strip is electrified to be rapidly heated and is welded with the cluster group tab and the non-lead metal positive and negative terminals at the same time, and after being firmly welded, the non-lead metal strip is cut to form a busbar and is sealed by glue. According to the lead-acid storage battery, metal with the conductivity higher than that of lead is adopted to replace lead and lead-based alloy to serve as the busbar of the lead-acid storage battery, the gravimetric specific energy of the lead-acid storage battery is improved, the material cost of the lead-acid storage battery is reduced, the mode of welding by heating the metal strip is adopted to replace the technology of manufacturing the busbar through hot melting of lead, the production efficiency is improved, and the energy consumption is reduced; meanwhile, clean production is achieved, and lead pollution in the traditional production process is avoided.

A battery includes an electrode assembly having a first uncoated portion and a second uncoated portion; a housing having an open portion formed at one side and configured to accommodate the electrode assembly through the open portion; a first current collector coupled with the first uncoated portion and located inside the housing; a cap configured to cover the open portion; and a spacer. The spacer includes a spacer portion interposed between the first current collector and the cap and configured to prevent movement of the electrode assembly, a gasket portion interposed between the housing and the cap and configured to seal the gap between the cap and the housing, and a connection portion configured to connect the spacer portion and the gasket portion and having a bending portion configured to switch an extension direction thereof between the spacer portion and the gasket portion.

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

Embodiments relate to a cylindrical secondary battery. A cylindrical secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate, a case that accommodates the electrode assembly and of which a lower end is opened to be electrically connected to the second electrode plate, a first current collector plate disposed between a top surface of the electrode assembly and the case and electrically connected to the first electrode plate, a terminal which passes through a top surface part of the case and of which a lower end is electrically and mechanically coupled to a top surface of the first current collector plate, and a cap plate configured to seal a lower end of the case. The terminal includes a main body having a flat top surface and a welding groove recessed downward from a top surface of the terminal outside the main body.

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

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 utility model provides a top cover assembly and a battery pack. The top cover assembly comprises a cover plate which is provided with a pole hole penetrating through the upper surface and the lower surface of the cover plate; the pole is mounted in the pole hole; the insulating assembly comprises an upper insulating part and a lower insulating part, the upper insulating part is mounted on the upper surface of the cover plate and comprises an upper insulating part which abuts against the position between the pole and the cover plate, and the lower insulating part is mounted on the lower surface of the cover plate and abuts against the position between the pole and the cover plate; the sealing element is propped between the pole and the cover plate; wherein the outer side surface, far away from the pole, of the sealing element comprises at least one step surface, and the sealing element is also propped between the upper insulating element and the lower insulating element so as to be extruded to be in a compressed state. The sealing element is abutted between the upper insulating element and the lower insulating element so as to be extruded to be in a compressed state, so that the sealing element is sealed with the cover plate, the upper insulating element and the lower insulating element, and even if the electrolyte flows into a gap in the top cover assembly, the pole can be isolated from the electrolyte.

The invention provides a top cover assembly, a battery and an energy storage device. Comprising a top cover, lower plastic, a pole and a sealing ring, wherein the top cover is provided with a first hole; the lower plastic and the top cover are arranged in a stacked mode, the lower plastic is provided with a second hole and a groove, the second hole penetrates through the lower plastic in the thickness direction of the lower plastic and is coaxially arranged and communicated with the first hole, the inner wall of the second hole is matched with part of the surface, facing the lower plastic, of the top cover to form a first step structure, and an opening of the groove is located in the surface, deviating from the top cover, of the lower plastic. The groove is located on the periphery of the second hole and communicated with the second hole, and the side wall of the groove and the bottom wall of the groove are matched to form a second step structure; the pole penetrates through the first hole and the second hole; the sealing ring is arranged on the pole in a sleeving mode and located in the first hole, the second hole and the groove, the sealing ring located in the second hole abuts against the first step structure, and the sealing ring located in the groove abuts against the second step structure. According to the technical scheme, conduction of the top cover and the pole can be avoided, and the safety performance of the electrode assembly is guaranteed.

The embodiment of the invention provides a battery monomer, a battery and electric equipment. The battery cell includes a housing, a first electrode terminal, an electrode assembly, a first insulator, and a second insulator. The shell comprises a first wall; the first electrode terminal is arranged on the first wall in an insulating manner; the electrode assembly is arranged in the shell, the electrode assembly comprises a main body part and a first tab, the main body part is flat, the main body part is provided with a first end face facing the first wall, the first tab is arranged on the first end face, and the first tab is electrically connected with the first electrode terminal; the first insulating part and the second insulating part are arranged in the shell, and the first tab is located between the first insulating part and the second insulating part in the thickness direction of the main body part.

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

The invention discloses a cover plate assembly and a battery, and relates to the technical field of batteries, the cover plate assembly comprises a cover plate, a pressing ring and a pole, and the cover plate is provided with a mounting hole arranged in a front-back penetrating manner along the thickness direction of the cover plate; the pole is arranged in the mounting hole in a penetrating manner; the pressing ring is arranged on the front side of the cover plate and sleeves the pole, and the pressing ring is welded and fixed with the peripheral side of the pole; the width of the pressing ring is W, the thickness of the pressing ring is H1, the diameter of the pole is D, and the area of the front end face of the pole is S. By controlling the width W of the pressing ring and the diameter D of the pole, the pressing ring can provide enough welding area, and the welding mark can reach enough connection width, so that stable connection between the pole and the pressing ring is ensured; by controlling the thickness H1 of the pressing ring and the area S of the front end face of the pole, the welding mark can reach enough connection depth, the connection force of the welding mark is improved, and the problem of welding failure of the pole and the pressing ring is effectively avoided.

The invention discloses a battery cover plate assembly and a power battery, two ends of a cover plate are provided with pole mounting holes, and the bottom of the cover plate is connected with lower plastic; an outer welding ring is arranged at the pole mounting hole, a conductive column is arranged on the inner side of the outer welding ring, the conductive column and the outer welding ring are insulated through upper plastic, and the peripheral side of the top of the upper plastic is clamped and matched with the inner side of the outer welding ring to prevent torsion; a sealing ring and an inner welding ring are sequentially arranged at the bottom of the conductive column; an opening is formed in the position, corresponding to the pole mounting hole, of the lower plastic, an annular protruding structure is arranged on the top face of the lower plastic, buckles are arranged on the circumferential side of the annular protruding structure, and the annular protruding structure is clamped and fixed to the inner side of the inner welding ring through the buckles; the top of the annular protruding structure is in compression joint with the inner side of the sealing ring. Through anti-torsion and corresponding sealing insulation design, the strength and sealing insulation performance of the cover plate assembly are improved, and the stability of the battery is improved.

A rectangular secondary battery is provided with: a rectangular exterior body having an opening, a bottom part, a first lateral wall, a second lateral wall, a third lateral wall, and a fourth lateral wall; a sealing plate for sealing the opening; and a flat wound electrode body obtained by winding a positive electrode plate and a negative electrode plate with a separator therebetween, wherein a plurality of the flat wound electrode bodies are arranged in the rectangular exterior body. The flat wound electrode bodies each have: a flat region formed at the center, a first bent region having a bent outer surface and being formed on one end side of the flat region; and a second bent region having a bent outer surface and being formed on the other end side of the flat region.

A battery cell cover plate and a battery cell, relating to the field of battery cell structures. The battery cell cover plate comprises: a plate assembly provided with mounting holes (201); and terminals (1), a position-limiting portion (13) being formed on an outer side portion of each terminal (1), wherein when the terminals (1) are correspondingly disposed at the mounting holes (201), the plate assembly is located between the position-limiting portions (13), and the plate assembly is pressed against the terminals (1) so as to seal the mounting holes (201). The battery cell cover plate can meet cell assembly requirements without the need to provide a riveting block, so that the overall structure of the battery cell cover plate is effectively reduced, thereby effectively reducing the occupied space, weight, and production cost of the battery cell cover plate. In addition, the internal resistance of the battery cell can be effectively reduced to lower the overcurrent temperature rise of the battery cell, thereby ensuring the safety performance of the battery cell when in use.

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.

The invention discloses a high mass specific energy power primary battery and electric equipment, and relates to the technical field of batteries. Comprising a cover group, a shell, a positive pole piece, a diaphragm, a negative pole piece, a thermistor, an electrolyte, a bottom cover plate and a hole plugging piece, the shell is of a hollow cylindrical structure with two open ends and is covered by the cover set and the bottom cover plate to form a containing cavity. A collector plate and a pole are made of a high-conductivity metal material, and the pole and a cover group body are hermetically connected through a glass body; the negative pole piece is provided with a supporting structure, each of the positive pole piece and the negative pole piece is provided with at least one pole lug, the positive pole piece or the negative pole piece is coated with a diaphragm of a coating layer and placed in the accommodating cavity, the negative pole lug is connected with a bottom cover plate, the positive pole lug is connected with one end of a thermistor, the other end of the thermistor is connected with a collector plate, and electrolyte is injected to prepare the battery. The problems of continuous current output of more than 5C, use in an environment of-55 DEG C to 125 DEG C, overload impact of gravitational acceleration of more than 10 times, impact of environment temperature, storage for more than 10 years and the like of a primary battery are solved.

To provide a lead with an insulating resin film with which, when applied to a battery, it is possible to eject a gas generated in a region sealed by the outer packaging of the battery to the outside of the region sealed by the outer packaging.SOLUTION: Provided is a lead with an insulating resin film comprising a conductor and an insulating resin film, wherein, when an axis extending along two sides facing each other is defined as an axis X and an axis crossing the axis X is defined as an axis Y with the conductor viewed from above, the insulating resin film is disposed so as to cover the conductor crossing it along the axis X and not to cover both ends of the conductor that are along the axis Y so as to extend off both ends of the conductor and overlap. The insulating resin film has a first layer being in contact with the conductor, and a second layer. The second layer includes a base resin composed primarily of polypropylene, and one or more kinds of additive component selected from a rubber component and an elastomer component. The melting point of the base resin is 110°C to 130°C inclusive, and the softening point of the additive component is 130°C or below. The second layer contains 10 mass% to 40 mass% inclusive of the additive component.SELECTED DRAWING: Figure 3A

The invention discloses an end cover assembly and a manufacturing method thereof, an energy storage device and electric equipment, the end cover assembly comprises an end cover, lower plastic, a pole and a sealing ring, the end cover is provided with a through hole, the lower plastic comprises a pole through hole, the lower plastic and the end cover are stacked along the thickness direction of the end cover assembly, and the through hole is communicated with the pole through hole. The pole comprises a pole body, a flange and a folding part, the folding part and the flange are oppositely arranged at an interval along the height direction of the pole, the pole body comprises a mounting surface opposite to the flange, the folding part is convexly arranged on the periphery of one end of the pole body and surrounds the mounting surface, the folding part comprises an appearance surface connected to the mounting surface, and a crease is arranged between the appearance surface and the mounting surface. The appearance surface is flush with the mounting surface, or the mounting surface protrudes out of the appearance surface in the direction from the folding part to the flange; the sealing ring is sleeved on the periphery of the pole and penetrates through the through hole and the pole through hole together with the pole, the end cover part on the periphery of the through hole is positioned between the flange and the turnover part, and the flange, the lower plastic, the end cover and the turnover part jointly clamp the sealing ring.

The invention discloses a front terminal vertical wide tab direct-connection bipolar lead-acid battery and an assembly method thereof, and particularly provides a novel battery structure, a busbar between single partitions in a conventional battery is removed, and the connection between the single partitions is replaced by a bipolar pole plate connection mode; the polar plates and the partition plates are horizontally stacked into a battery jar layer by layer according to a specific arrangement sequence, tabs are widened, a row of holes are punched in the middles of the tabs of the bipolar polar plates, metal rods are inserted into the holes to enable the tabs of a polar group to be connected in parallel after lamination is completed, the polar group is locked by a pressing plate, and each monomer is sealed through glue injection. Then the two half parts are bonded into a whole through glue sealing or heat sealing, the battery is turned to be in a vertical state, then a busbar at the turning position is welded, a terminal is welded, a side cover is sealed, and battery assembling is completed; according to the structure, the large-current high-rate discharge performance of the battery can be greatly improved, the problems of high-rate discharge and assembly of the lead-acid battery are effectively solved, and a key support is provided for technical innovation, performance spanning and market expansion of the lead-acid battery.

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 invention relates to the technical field of batteries, and provides a top cover assembly, a single battery cell and a battery pack. The top cover assembly comprises a plastic part and a cover plate. A pressure relief opening is formed in the cover plate. The plastic part is connected with the side, close to the electrode assembly, of the cover plate. The plastic part has a fracture area. The fracture area is arranged close to the pressure relief opening. And the fracture area is configured to be fractured under the action of air pressure in the battery cell. Therefore, the anti-explosion valve structure can be formed on the top cover assembly without a stamping or welding mode, and the stability of the opening force of the anti-explosion valve can be ensured.

The invention discloses a battery cover plate assembly capable of improving air tightness, the battery cover plate assembly comprises a cover plate body and a pole assembly assembled on the cover plate body, the pole assembly comprises a pole body and a sealing ring, the pole body penetrates through a pole hole in the cover plate body, the space between the pole body and the pole hole is filled with the sealing ring, and the cover plate body is provided with a cover plate step; the sealing ring comprises an inner wall and an outer wall spaced from the inner wall by a target width, the inner wall is matched with the side wall of the pole body, gradient steps matched with the steps of the cover plate and a transition connecting surface are formed in the width direction of the sealing ring, the gradient steps comprise at least one step, and each step comprises a step plane and a step connecting surface; the step planes and the transition connecting faces or every two adjacent step planes are connected through a step connecting face, and the inner wall is an inclined face and / or at least one step connecting face in at least one step is an inclined face. The sealing ring is designed into the special-shaped structure with the slope, so that the sealing effect of the pole assembly is improved.

A cylindrical battery, which includes an electrode assembly including a first electrode tab and a second electrode tab; a battery housing configured to accommodate the electrode assembly through an open portion and connected to the first electrode tab; a first current collecting plate having a support portion disposed on the electrode assembly, at least one first tab coupling portion extending from the support portion, and at least one housing coupling portion extending from an end of the first tab coupling portion; a second current collecting plate having a rim portion disposed on the electrode assembly, a second tab coupling portion extending inwardly from the rim portion, and a terminal coupling portion spaced apart from the second tab coupling portion; a cap plate configured to seal the open portion; and a battery terminal coupled with the terminal coupling portion.

The utility model discloses a battery monomer, a battery module and electric equipment. The battery monomer comprises a shell, a battery module and a battery module, a battery cell, wherein the battery cell is arranged in the shell; the first terminal post and the second terminal post are both electrically connected with the battery cell, and the first terminal post and the second terminal post are respectively matched with the shell in an insulating manner; and the electric connecting piece is arranged on the shell and is electrically connected with the shell, and the electric connecting piece is electrically connected with the first polar column. According to the single battery provided by the utility model, the shell is electrically connected with the first pole column through the electric connecting piece, the electric connecting piece is not connected into a battery working loop, the temperature of the electric connecting piece is not influenced by working current, the stability of resistance of the electric connecting piece is ensured, the shell can be electrified stably, and the safety of the single battery is improved.

A cover plate assembly for a battery, a battery, and an electrical apparatus. The cover plate assembly comprises a cover plate (2) and a sealing cover (1), the cover plate (2) being provided with a through hole (25) and the sealing cover (1) being arranged on the cover plate (2) so as to block the through hole (25). The sealing cover (1) is provided with a first bent portion (11), a lap joint portion (12) and a second bent portion (13), the first bent portion (11) being connected to the cover plate (2), the lap joint portion (12) being located between the first bent portion (11) and the second bent portion (13), the first bent portion (11), the lap joint portion (12) and the second bent portion (13) being sequentially connected to form a recess, and the width L of the lap joint portion (12) being not less than 0.5 mm and not greater than 1.5 mm.

A battery cell, a battery, and an electric device, relating to the technical field of batteries. The battery cell comprises: a first shell wall, a pole, a first insulating seal, and a pad, wherein the pole comprises a penetration part and a first extension part, the first extension part extends to the outer side of the outer surface of or the inner side of the inner surface of the first shell wall, the penetration part and the first extension part constitute a first pole part, the first insulating seal is matched between the first pole part and the first shell wall, and the pad is arranged between the first pole part and the first shell wall and used for buffering the acting force applied to the first insulating seal by at least one of the first pole part and the first shell wall.

The utility model aims to provide the cylindrical lithium battery cap with the built-in BMS board and the cylindrical lithium battery with the cap, which have the characteristics of compact and reasonable structure, convenience in production and manufacture and miniaturization, and can reduce the influence of battery cell capacity reduction caused by the need of installing the BMS board to the maximum extent.

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, a pole column body and a pole column bottom plate; the pole body comprises a main body and a connecting body which are connected with each other, and orthographic projections of the main body and the connecting body along a first direction are runway-shaped; a runway hole is formed in the pole bottom plate, the connector penetrates through the runway hole and is welded with the pole bottom plate, the section of the runway hole comprises two straight line sections and two arc sections, the two straight line sections are oppositely arranged at intervals in the width direction of the cover plate body, and the two arc sections are oppositely arranged at intervals in the length direction of the cover plate body; the size of the arc section in the width direction of the cover plate body is L2, the size of the pole bottom plate in the width direction of the cover plate body is L4, and L2 / L4 is larger than or equal to 0.25 and smaller than or equal to 0.5. The welding quality between the pole body and the pole bottom plate can be improved by controlling the size of the runway hole in the pole bottom plate to be within a proper range.