11639results 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.

The invention provides an end cover assembly, a battery cell and an energy storage device. The end cover assembly comprises a top cover, the top cover is provided with a first surface and a second surface which are oppositely arranged in the thickness direction of the top cover, the top cover is further provided with a mounting hole, a sinking groove and a groove, the mounting hole penetrates through the first surface and the second surface, the sinking groove is formed around the periphery of the mounting hole, and the sinking groove penetrates through the second surface and communicates with the mounting hole; the groove is formed in the bottom wall of the sinking groove; the upper plastic cement is arranged in the sinking groove and partially arranged in the mounting hole in a penetrating manner, and a through hole is formed in the position, corresponding to the groove, of the upper plastic cement; the pressing ring is arranged on the side, away from the top cover, of the upper plastic and abuts against the upper plastic, and a blind hole is formed in the position, corresponding to the through hole, of the surface, facing the upper plastic, of the pressing ring; the limiting piece is arranged in the through hole in a penetrating mode, part of the limiting piece is located in the groove, and part of the limiting piece is located in the blind hole; in the thickness direction of the top cover, the distance between the bottom wall of the groove and the bottom wall of the blind hole is larger than the height of the limiting piece.

Embodiments described herein relate generally to electrochemical cells having semi-solid electrodes that are coated on only one side of a current collector. In some embodiments, an electrochemical cell includes a semi-solid positive electrode coated on only one side of a positive current collector and a semi-solid negative electrode coated on only one side of a negative current collector. A separator is disposed between the semi-solid positive electrode and the semi-solid negative electrode. At least one of the semi-solid positive electrode and the semi-solid negative electrode can have a thickness of at least about 250 μm.

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 an accommodating cavity and comprises a first shell wall participating in limiting the accommodating cavity, the pole part is mounted on the first shell wall and comprises a pole main body, the battery core part comprises at least one battery core group, the battery core group comprises n battery core main bodies, the n battery core main bodies are all arranged in the accommodating cavity, and the n battery core main bodies are arranged in the accommodating cavity. The plurality of battery core main bodies are sequentially arranged along the first direction, the end part of each battery core main body is connected with a tab group, all the tab groups of the battery core group extend towards the middle position of the battery core group in the first direction and are connected to form a tab part, the tab part is electrically connected with the pole main body, and n is greater than or equal to 1 and is a positive integer. Therefore, the reliability of the battery cells can be improved.

The invention discloses a battery, a battery module and electric equipment. The battery comprises a shell, an electrode assembly, an end cover, an anti-explosion sheet and a protective layer, the housing has a housing opening. The electrode assembly is housed within the case. The end cover is connected to the shell and covers the opening of the shell. The anti-explosion piece is arranged on the end cover. The protection layer is connected to the surface of the explosion-proof sheet, and at least part of the protection layer is arranged on the side, back to the electrode assembly, of the explosion-proof sheet. And the protective layer can prevent external liquid or other impurities from directly contacting at least part of the explosion-proof sheet, so that the possibility that the explosion-proof sheet is corroded and damaged is reduced, the sealing performance of the battery is improved, the electrolyte leakage risk is reduced, and the reliability and safety performance of the battery are improved.

The invention relates to the technical field of batteries, in particular to a battery cell cover plate and a battery cell. The battery cell cover plate comprises a cover plate main body provided with a mounting hole; the pole column is arranged in the mounting hole, the pole column comprises a column body part and a first plate body part, the first plate body part is arranged at one end, facing the outside of the battery cell, of the pole column and is formed by outwards protruding the side wall of the column body part, and the distance between the side wall of the first plate body part and the side wall of the column body part is L; the distance between the side wall of the cylinder part and the hole wall of the mounting hole is M, and L is greater than M; and the first insulating part is clamped between the first plate body part and the cover plate main body. According to the invention, a riveting block structure in a traditional battery cell cover plate is canceled, so that the first plate body part on the pole directly crimps the first insulating part on the cover plate main body, thereby facilitating assembly and reducing cost; the occupied space and the weight of the cover plate are reduced, and the energy density of the battery cell is improved. In addition, L is limited to be larger than M, the situation that the pole falls off under the impact of external force is avoided, and therefore the safety performance of the battery cell cover plate is improved.

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 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 of the containing cavity, the pole part is installed on the first shell wall and comprises a pole body, the battery core part comprises a battery core body and an adapter, the battery core body is arranged in the containing cavity, and the end of the battery core body is connected with a tab group. The tab group is electrically connected with the pole main body through the adapter, and the adapter supports the free end of the tab group. Thus, the reliability of the battery cell can be improved.

Discussed is a cylindrical battery having an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound. The first electrode and the second electrode include a first uncoated portion and a second uncoated portion along a winding direction, respectively. At least one of the first uncoated portion and the second uncoated portion is defined as an electrode tab by itself and includes a core-side uncoated portion, an outer circumference uncoated portion, and an intermediate uncoated portion between the core-side uncoated portion and the outer circumference uncoated portion. At least one of the core-side uncoated portion and the outer circumference uncoated portion has a smaller height than the intermediate uncoated portion in a winding axis direction. The cylindrical battery includes a battery housing, a first current collecting plate, a cap plate, a spacer, and an external terminal electrically connected to the second uncoated portion.

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.

A button cell includes: an electrode assembly including a first electrode, a second electrode, and a separator; a case connected to the first electrode, accommodating the electrode assembly, and having an opening exposing the electrode assembly; a cap plate connected to the case to cover an outer boundary region of the opening, and having a penetration hole exposing a central region of the opening; a terminal plate connected to the second electrode, insulated from and bonded to the cap plate, and including a protrusion plate protruding from a rear surface of a main plate in a direction toward the electrode assembly, the main plate covering the penetration hole; and a bonding layer between and insulating the cap plate and the main plate. A front surface of the main plate and a front surface of the cap plate are located at the same plane as each other.

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 discloses a battery monomer, a battery device and an electric device, and belongs to the technical field of batteries. Wherein the battery monomer comprises a shell, an electrode component and a pole component, the electrode component is arranged in the shell, the shell comprises a first shell wall, the pole component is arranged on the first shell wall and comprises a pole and a clamping structure, the pole is connected with the electrode component, and the clamping structure is connected with the first shell wall; the clamping structure surrounds the pole and is insulated and hermetically matched with the pole through the insulated sealing structure, the clamping structure comprises a first clamping piece and a second clamping piece which are connected, the first clamping piece is bent towards the pole, the first clamping piece and the second clamping piece form a clamping groove for clamping the pole together, the first clamping piece comprises a first clamping part bent towards the pole, and the second clamping piece comprises a second clamping part bent towards the pole. The plurality of first clamping parts are arranged along the circumferential direction of the pole, and a discontinuous opening is formed between at least two adjacent first clamping parts, so that the problems of wrinkles, material stacking and the like after the first clamping parts are bent are favorably solved, and the reliability of the battery monomer is improved.

The utility model discloses a cover plate assembly and a battery monomer with the cover plate assembly, the cover plate assembly comprises a cover plate, upper plastic cement and a conductive terminal, the cover plate, the upper plastic cement and the conductive terminal are sequentially laminated along the thickness direction of the cover plate; the first terminal post and the second terminal post penetrate through the cover plate, the upper plastic cement and the conductive terminal in the first direction and are electrically connected with the conductive terminal, and in the thickness direction of the cover plate, the first terminal post and the second terminal post are electrically connected with the conductive terminal; a concave groove is formed in at least one of the two side surfaces, attached to the cover plate, of the upper plastic and the conductive terminal, the side surface, attached to the upper plastic, of the conductive terminal and the side surface, attached to the upper plastic, of the cover plate, and the groove is located between the first pole and the second pole. According to the cover plate assembly disclosed by the utility model, the conductive terminals can be effectively prevented from protruding and bulging, the conductive terminals are prevented from falling off, the welding connection effect of the battery monomer and the busbar is well improved, and the battery monomer has good assembling and positioning accuracy when being assembled in a module.

The utility model relates to the field of batteries, and discloses a battery monomer, a battery device and a power utilization device, the battery monomer comprises a shell part, an electrode part and a pole part, the electrode part is arranged in the shell part, the shell part comprises a first shell wall, and the pole part is arranged on the first shell wall and comprises a pole body connected with the electrode part; the clamping structure surrounds the pole body and is connected with the first shell wall; the insulation sealing structure is in insulation and sealing fit between the clamping structure and the pole body; the clamping structure comprises a first clamping piece and a second clamping piece, and at least one of the first clamping piece and the second clamping piece is bent towards the other to form a clamping groove together; the clamping groove clamps the pole body, a notch is formed in the clamping groove, and the clamping groove is tightened at the notch; in the thickness direction of the first shell wall, the ratio of the minimum size of the notch to the maximum size of the clamping groove is smaller than 90%. According to the utility model, the connection of the insulation sealing structure between the pole body and the clamping structure is tighter, and the reliability of the single battery 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 present invention relates to a secondary battery, comprising: an electrode assembly; an exterior film having an internal space which accommodates the electrode assembly and an exterior opening which enables communication between the internal space and the outside; and a cover member covering the exterior opening of the exterior film. The cover member may comprise a first member blocking the exterior opening and a second member extending from the first member and coupled to the inner surface of the exterior film.

The embodiment of the utility model provides a battery monomer, a battery and electric equipment. The battery monomer comprises a shell, a first insulating part and a second insulating part, the housing has a first wall. The first insulating part wraps the outer side of the shell. At least a portion of the second insulator is located between the first wall and the first insulator and covers at least a portion of an outer surface of the first wall. The first insulating part wraps the shell, the first wall is a part of the shell, and the first insulating part can insulate and protect the first wall of the shell; the second insulating part covers at least one part of the outer surface of the first wall, and the second insulating part can insulate and protect at least one part of the first wall; at least one part of the second insulating part is located between the first wall and the first insulating part, and the at least one part of the second insulating part and the first insulating part can perform insulating protection on the first wall, so that the insulating protection effect of the first wall is enhanced, and the reliability of the single battery is improved.

The invention provides a battery monomer, a battery and a power utilization device, and belongs to the technical field of batteries. The battery monomer comprises a shell, an electrode assembly and a one-way valve, the shell is provided with a wall part, the electrode assembly is accommodated in the shell, and the one-way valve is arranged on the wall part and used for discharging gas in the shell. The one-way valve is arranged on the wall part of the shell, so that the one-way valve can be opened unidirectionally, and gas in the shell can be discharged out of the shell, so that the gas generated in the shell can be discharged out of the shell through the one-way valve in the normal use process of the single battery; the phenomenon that the internal pressure of the battery monomer reaches a threshold value in advance due to the rise of the internal air pressure of the battery monomer is relieved, so that the use stability of the battery monomer can be effectively improved, the service life of the battery monomer is prolonged, and the use reliability of the battery monomer is improved.

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.

The utility model provides a battery, a battery pack and an energy storage system, the battery comprises a shell, a pole core, a mylar film, an insulating porous film and a bottom support sheet, and the pole core, the mylar film, the insulating porous film and the bottom support sheet are accommodated in the shell; the bottom surface of the pole core, the mylar film, the insulating porous film and the bottom support sheet are sequentially stacked, and the insulating porous film positioned on the bottom surface comprises a plurality of through holes. The through holes of the insulating porous membrane can reduce the circulation of dust falling from the pole core between the pole core and the shell, and reduce the possibility of micro short circuit between the bottom surface of the pole core and the shell.

To provide a secondary battery with high energy density and high reliability, and a method for manufacturing the secondary battery stably and efficiently.SOLUTION: A method for manufacturing a secondary battery sequentially includes the steps of: preparing an electrode body, the electrode body including a first electrode, a second electrode with a different polarity from that of the first electrode, a first electrode tab group connected to the first electrode in a first end part, and a second electrode tab group connected to the second electrode in a second end part, the first end part and the second end part being located on opposite sides; electrically connecting a first electrode terminal provided in a first sealing plate and the first electrode tab group to each other; joining the second electrode tab group to a first conductive member; inserting the electrode body into a case body from the second end part side through a first opening after joining the second electrode tab group to the first conductive member; electrically connecting the second electrode terminal provided in the second sealing plate and the second electrode tab group to each other; and sealing the opening by the sealing plate after electrically connecting the electrode terminals and the electrode tab groups together.SELECTED DRAWING: Figure 21

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.