10177results about "Small-sized cells cases/jackets" patented technology

The invention belongs to the technical field of batteries, and discloses a battery cover plate and a single battery, the battery cover plate comprises a plate body assembly and a pole assembly, the plate body assembly is used for covering an opening of a battery shell, the plate body assembly comprises a first plate body, a second plate body and a connecting part, the first plate body comprises a first surface and a second surface which are oppositely arranged, the first surface is configured to be arranged towards the battery shell, the direction from the first surface to the second surface is a first direction, the second plate body comprises a first side and a second side which are oppositely arranged, the second plate body inclines in the direction deviating from the first direction from the direction from the first side to the second side, and the first side is connected with the first plate body through a connecting part; the battery cover plate comprises a first plate body and a second plate body, a connecting part is arranged between the first plate body and the second plate body, the connecting part protrudes towards the first direction, a pole assembly penetrates through at least one of the first plate body and the second plate body, the connecting part protrudes out of the pole assembly along the first direction, the structural strength of the plate body assembly can be improved, and the probability that the pole assembly is bumped in the manufacturing process can be reduced.

A lithium battery includes: a housing in which an accommodation space is formed; a core disposed in the accommodation space; a negative cover disposed at a first end of the housing; a positive cover disposed at a second end of the housing; a positive current collecting disk disposed on a side of the positive cover close to the core; and a support member disposed between the positive cover and the positive current collecting disk and abutting against the positive current collecting disk.

The invention belongs to the technical field of batteries, and discloses a battery top cover which comprises a plate body assembly and a pole assembly, the plate body assembly is used for covering an opening of a battery cell shell, the direction from the battery cell shell to the plate body assembly is configured to be a first direction, and the plate body assembly comprises a first plate body, a second plate body and a first reinforcing part; the first plate body is perpendicular to the first direction, a reinforcing part is arranged on the edge of the side, facing the first direction, of the first plate body, one side of the second plate body is connected with the reinforcing part, the second plate body inclines in the direction away from the first direction from the side facing the reinforcing part to the side away from the reinforcing part, and the first reinforcing part is connected with the reinforcing part. According to the battery top cover, at least one of the first reinforcing piece and the reinforcing part protrudes in the first direction, a pole assembly penetrates through at least one of the first plate body and the second plate body, the first reinforcing piece protrudes out of the pole assembly in the first direction, and the plate body assembly of the battery top cover is high in structural strength and can also play a role in protecting the pole assembly.

The present disclosure is to provide a cylindrical secondary battery that facilitates connecting a busbar by having both positive and negative electrodes on one side, and that has highly reliable electrical contact between an electrode assembly and a case. To that end, the present disclosure provides a secondary battery comprising: an electrode assembly; a case for housing the electrode assembly; a current collector plate welded to the electrode assembly and case; and a cap plate, located above the current collector plate, for sealing the case.

Disclosed is a cylindrical lithium-ion battery, comprising a battery cell, a protection board, a first elastic conductive member, a second elastic conductive member and a fixing cap. The protection board is installed above the battery cell at intervals, a top surface of the protection board is provided with a metal contact. An upper end of the first elastic conductive member abuts against a bottom surface of the protection board and is electrically connected to a positive electrode of the protection board, and a lower end of the first elastic conductive member abuts against a top end of the battery cell and is electrically connected to a positive electrode of the battery cell. An upper end of the second elastic conductive member abuts against the bottom surface of the protection board and is electrically connected to a negative electrode of the protection board.

A rechargeable battery includes a wound-type electrode assembly, a heat pipe, a can, and a cap plate. The heat pipe is disposed inside of the electrode assembly at a distance from a wound center of the electrode assembly, and the heat pipe surrounds the wound center. The can includes an internal space in which the electrode assembly and the heat pipe are positioned. The cap plate is coupled to an end of an opening of the can to close and seal the can, the cap plate is connected heat pipe, and the cap plate is configured to provide dissipation of heat from the heat pipe.

A cylindrical secondary battery including an electrode assembly including a negative electrode plate and a positive electrode plate; a cylindrical can accommodating the electrode assembly and including a terminal hole in one side of the cylindrical can and an open inlet in another side of the cylindrical can; a terminal coupled to the cylindrical can through the terminal hole; and a negative electrode current collector in the cylindrical can and electrically connecting the cylindrical can to the negative electrode plate. The negative electrode current collector includes a notch groove or a cutting hole configured to be cut in response to an increase in pressure in the cylindrical can.

A current collecting plate for a negative electrode of a battery unit. The current collecting plate comprises: a main body part that forms a main body of the current collecting plate; a welding region that is arranged at the approximate center of the main body part; and a connecting part that connects the welding region to the main body part, wherein in addition to being connected to the connecting part, the welding region is separated from the main body part by a through opening.

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 battery cell, a battery, and an electrical device are disclosed. The battery cell includes an electrode assembly, a shell, an electrode terminal, and a current collecting member. The electrode assembly has a tab. The shell accommodates the electrode assembly. The electrode terminal is disposed at one end of the shell in a first direction. The current collecting member is provided with a hollow region, and the hollow region divides the current collecting member into a first connection region and a second connection region located on two sides of the hollow region. The first connection region is connected to the tab, and the second connection region is connected to the electrode terminal. When the electrode terminal is subjected to stress, the hollow region enables the second connection region to deform relative to the first connection region, so the stress is not easily transmitted to the first connection region.

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.

Disclosed is a cylindrical battery, comprising a housing, bare cells, a first current collector, a second current collector, and a cover plate, wherein the housing comprises a columnar main body, with a first opening being provided in one end of the columnar main body and a second opening being provided in the other end of the columnar main body; a first full-tab is provided at one end of each of the bare cells and a second full-tab is provided at the other end of the bare cell, the first full-tab being connected to the cover plate by means of the first current collector; the other end of the columnar main body extends into the second opening to form a connecting portion, the connecting portion bends toward the first opening to form an annular connecting surface, and the annular connecting surface bends toward an axis of the columnar main body to form a bearing surface; and the second current collector comprises an outer edge which is in lap joint with the bearing surface and which is connected to the bearing surface by means of laser welding, and a protrusion protruding toward the first opening, the protrusion being connected to the second full-tab by means of laser welding. The present application uses laser penetration welding, which provides firm welding and effectively meets the requirements of high charging and discharging rates of cylindrical power batteries.

A battery cell includes an electrode assembly, a case, an end cover assembly, and a current collecting component. The electrode assembly includes a first tab. The case is used for accommodating the electrode assembly, and the case has an opening. The end cover assembly covers the opening and is provided with an electrode lead-out portion. The current collecting component includes a tab connecting region and an end cover connecting region. The tab connecting region is used for connecting to the first tab. The end cover connecting region is welded to the inner side of the electrode lead-out portion and forms a first welded portion. The penetration depth of the first welded portion formed on the electrode lead-out portion is smaller than or equal to the thickness of the electrode lead-out portion.

A secondary battery includes an electrode assembly including a negative electrode plate including a negative electrode leading end uncoated portion, a positive electrode plate including a positive electrode leading end uncoated portion, and an anti-deformation portion attached to the positive electrode leading end uncoated portion, an end of the positive electrode leading end uncoated portion and an end of the anti-deformation portion being located ahead of an end of the negative electrode leading end uncoated portion, a case accommodating the electrode assembly, and electrically coupled to the negative electrode plate, and a cap assembly sealing the case.

The invention discloses a cylindrical battery, a battery pack and electric equipment. The cylindrical battery comprises an electrode assembly and a shell, the electrode assembly is contained in the shell, the shell comprises a side wall arranged around the electrode assembly, the side wall comprises a side wall main body and a thinning part connected to the side wall main body, the thinning part extends in the circumferential direction of the cylindrical battery, the minimum thickness of the thinning part is T1, the thickness of the side wall main body is T2, and T1 / T2 is larger than or equal to 0.2 and smaller than or equal to 0.4. Therefore, the shell has relatively high strength, and the thinned part can be broken when the internal air pressure of the cylindrical battery is too large so as to timely relieve pressure, so that the safety performance is improved while the structural stability of the cylindrical battery is balanced.

The utility model is suitable for the technical field of batteries, and provides a high-voltage power distribution device, a battery and a power utilization device. The high-voltage power distribution device comprises a shell, a cover body and a low-voltage terminal; the shell has an opening; the cover body covers the opening, and an installation cavity is defined by the cover body and the shell; the low-voltage terminal is integrated on the target piece, the target piece is a shell or a cover body, the first end of the low-voltage terminal is exposed out of the mounting cavity, and the second end of the low-voltage terminal is electrically connected with a low-voltage circuit in the shell; at least one side wall of the target piece is provided with a protective shell with an outward opening, and the first end of the low-voltage terminal is located in the protective shell. According to the high-voltage power distribution device, the battery and the power utilization device, the number of parts in the high-voltage power distribution device can be reduced to a certain extent, and the occupied area of the high-voltage power distribution device is reduced.

The invention provides an electrode assembly manufacturing device and method, the electrode assembly manufacturing device comprises a winding needle and a heating part, the winding needle is used for winding a pole piece and a separator and forming a winding structure, and the heating part is used for being inserted into the winding center of the winding structure and heating the winding structure. According to the manufacturing equipment, the heating component can heat the winding structure at the winding center of the winding structure, so that at least part of ion channels in the separator of the inner ring in the winding structure are fused and closed, shuttling of ions is blocked, lithium precipitation of the winding structure can be reduced, and the risk of lithium precipitation of the battery can be effectively reduced.

The invention provides a cylindrical lithium battery. The sum of the areas of all second holes of a positive collector plate in the cylindrical lithium battery is 0.9-1.5 times of the area of a first hole, a fusing groove is formed in a tail body part of the positive collector plate, and the minimum sectional area S2 of the tail body part at the position of the fusing groove is 45%-65% of the overall sectional area S1 of the tail body part; a negative collector plate in the cylindrical lithium battery is provided with a heightening platform with a flat surface, the diameter D8 of the heightening platform is 28%-38% of the diameter D7 of the negative collector plate, and the height difference H4 between the surface of the heightening platform and the surface of the first side is 18%-30% of the thickness T4 of the negative collector plate. By reasonably designing the necking part, the positive collector plate and the negative collector plate, the cylindrical lithium battery disclosed by the invention is balanced in multiple aspects of liquid injection performance, safety, weldability and the like, and the battery performance can be improved.

The invention relates to the field of battery shell machining, in particular to a new energy automobile battery shell machining device which comprises a machining table, and a first fixing mechanism and a second fixing mechanism which are distributed left and right are installed at the top of the machining table. The machining table is further provided with a moving mechanism for driving the first fixing mechanism and the second fixing mechanism to move oppositely and a multi-dimensional welding machine for welding the U-shaped tailor-welded part and the L-shaped tailor-welded part. Two horizontal sections of the U-shaped tailor-welded part are limited, outwards supported and straightened at the same time through linkage matching of the first outer clamping assembly and the first inner straightening assembly, the two parallel sections of the U-shaped tailor-welded part are kept perpendicular to the middle section, and the first outer clamping assembly abutting against the U-shaped tailor-welded part and the first positioning assembly are connected and locked through the first positioning assembly. The horizontal section of the L-shaped tailor-welded part is limited and straightened through mutual cooperation of the second outer clamping assembly, the second inner straightening assembly and the front-back alignment assembly.

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 invention relates to the technical field of batteries, in particular to a battery shell, a battery comprising the shell and an electric device of the battery. The material of the shell comprises steel, the steel comprises Ti, Nb and Cr, and based on the total mass of the steel, the mass percentage content of Cr is larger than or equal to 16 wt.%; the shell comprises a side wall and an end wall integrally formed with the side wall; the shell meets the following relational expression: (h / d) / (b + c) is more than or equal to 50 and less than or equal to 7000; wherein h is the height of the shell, and the unit is mm; d is the thickness of the end wall, and the unit is mm; b is the mass percentage content of Ti by taking the total mass of the steel as a base number, and the unit is wt.%; c is the total mass of the steel as a base number, and the mass percentage content of Nb is wt.%. By controlling the relation between the content of Ti and Nb and the shell height and the end wall thickness, the steel with the content of Ti and Nb can meet the deep drawing machining performance of the battery shell, and the formed shell has good pressure bearing capacity.

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 provides a battery. The battery comprises a shell, a cover body, a battery cell, a pole assembly and an insulating glue layer, the cover body is buckled on the shell; the battery cell is located in a cavity defined by the shell and the cover body, and a first tab of the battery cell is conductively connected with the shell; a pole assembly arranged on the shell in a penetrating manner is connected with a second tab of the battery cell; the pole assembly comprises a connecting sheet and a pole; the insulating rubber layer is arranged between the connecting sheet and the side wall of the shell; a first hole is formed in the side wall of the shell, a second hole is formed in the insulating glue layer, the pole penetrates through the overlapping area of the first hole and the second hole, at least part of the connecting piece is exposed in the overlapping area of the first hole and the second hole, and the connecting piece exposed in the overlapping area is connected with the second tab through a first welding mark. The projection of the first welding mark does not coincide with the projection of the pole. Through the mode, compared with a riveting mode, the welding connection mode is low in cost, and the problem of poor air tightness or short circuit of the battery caused by riveting can be avoided.

The utility model relates to the technical field of battery production, and specifically discloses a highly efficient and non-destructive battery cell shelling device, including a frame, on which a feeding mechanism, a battery cell lifting mechanism, a battery cell initial shelling mechanism, a battery cell middle shelling mechanism, a battery cell terminal rotation shelling mechanism, and a battery cell shell pushing mechanism are provided. The battery cell initial shelling mechanism and the feeding mechanism are respectively located on the left and right sides of the battery cell lifting mechanism, the battery cell middle shelling mechanism is located between the battery cell initial shelling mechanism and the battery cell terminal rotation shelling mechanism, and the battery cell shell pushing mechanism is located on the side of the battery cell terminal rotation shelling mechanism. The utility model adopts a three-stage shelling method, and by providing a battery cell initial shelling mechanism, a battery cell middle shelling mechanism, and a battery cell terminal rotation shelling mechanism, the battery cell initial shelling, the battery cell middle shelling, and the battery cell terminal shelling are realized in sequence, which can avoid scratches on the battery cell surface, improve the yield rate, and have high production efficiency.

A cylindrical secondary battery includes: an electrode assembly; a case of which a lower end is open to accommodate the electrode assembly; and a cap plate coupled to the lower end of the case, wherein the cap plate includes a central area, an edge area and a connection area connecting the central area and an edge area, a vent is located in at least one of the central area and the connection area and an area of the cap plate in which the vent is formed has a smaller thickness than other areas.

The invention relates to the technical field of batteries, in particular to a battery shell, a battery comprising the shell and an electric device of the battery. The material of the shell comprises steel, the steel comprises Ti, Nb and Cr, and based on the total mass of the steel, the mass percentage content of Cr is larger than or equal to 16 wt.%; the shell comprises a side wall and an end wall integrally formed with the side wall; the shell meets the following relational expression: (h / d) / (b + c) is more than or equal to 50 and less than or equal to 7000; wherein h is the height of the shell, and the unit is mm; d is the thickness of the end wall, and the unit is mm; b is the mass percentage content of Ti by taking the total mass of the steel as a base number, and the unit is wt.%; c is the total mass of the steel as a base number, and the mass percentage content of Nb is wt.%. By controlling the relation between the content of Ti and Nb and the shell height and the end wall thickness, the steel with the content of Ti and Nb can meet the deep drawing machining performance of the battery shell, and the formed shell has good pressure bearing capacity.

The invention provides a cylindrical lithium battery. A first hole and second holes are formed in a plate body part of a positive collector plate in the cylindrical lithium battery, the diameter of each second hole is 25%-35% of the diameter of the plate body part, the sum of the areas of all the second holes is 0.9-1.5 times of the area of the first hole, and a fusing groove is formed in a tail body part of the positive collector plate. The distance between the center position of the fusing groove and the end, away from the disc body part, of the tail body part is 68%-78% of the length of the tail body part, and the minimum sectional area S2 of the tail body part in the fusing groove is 45%-65% of the overall sectional area S1 of the tail body part. According to the cylindrical lithium battery, the disc body part and the tail body part of the positive collector disc are reasonably designed, so that the cylindrical lithium battery is balanced in the aspects of safety, liquid injection performance, weldability and the like.