789results about "Electric connector introduction" patented technology

The invention discloses a cover plate assembly, a battery and a battery module, and belongs to the technical field of power batteries. The cover plate assembly comprises a cover plate piece and a pole piece, the cover plate piece is provided with a mounting hole, and the pole piece is positioned in the mounting hole and is insulated from the cover plate piece; a groove structure is arranged on the end face, located on the inner side of the cover plate piece, of the pole piece, the groove structure is used for containing a tab of a battery cell, and the inner side wall of the groove structure is connected with the tab in a welded mode. According to the cover plate assembly, the current conduction path can be greatly shortened, and the connection impedance and the contact resistance of the battery are reduced. Meanwhile, the cover plate assembly reduces the potential failure risk caused by multi-component assembly and multiple welding.

The present application provides a battery cell, a battery device, and an electric apparatus. The battery cell comprises a casing and an electrode assembly; the casing comprises a casing body and an end cover; the casing body is provided with an opening; the end cover covers the opening and is connected to the casing body; the casing body and the end cover define an accommodating cavity; the electrode assembly is accommodated in the accommodating cavity. The casing body comprises a first wall, and the first wall intersects with the end cover and comprises a wall body and a cushioning portion that are connected to each other. The cushioning portion is flexibly connected between the wall body and the end cover in a deformable mode. The battery cell provided by the present application is conducive to reducing the expansion force of the electrode assembly or the action force of an external load borne at the connecting position of the end cover and the casing body, thereby reducing the risk of cracking at the connecting position of the end cover and the casing body. In this way, the reliability of the battery cell is improved.

The present application relates to the technical field of batteries, and provides a cover plate assembly, a battery, and an electrical device. The cover plate assembly comprises a cover plate and an electrode terminal. A mounting hole is provided in the center of the cover plate, the cover plate comprising a first insulating member. The electrode terminal comprises a terminal piece and a second insulating member, the second insulating member being arranged on a side of the terminal piece. The terminal piece at least partially passes through the mounting hole and is connected to the cover plate. The second insulating member is in surface contact with the first insulating member. The cover plate assembly provided in examples of the present application can reduce the possibility of mutual interference of different parts of a battery cover plate during assembly, and improve the assembly efficiency and assembly reliability of the battery cover plate.

Disclosed in the present application are a battery and an electric device, which belong to the technical field of batteries. The battery of the present application comprises: a battery cell comprising a housing and an electrode terminal, the electrode terminal being arranged in the housing; a case assembly comprising a case, the case comprising a body part and a partition part, an accommodating space being formed inside the body part, the partition part being located in the accommodating space and dividing the accommodating space into two first accommodating cavities, the two first accommodating cavities respectively extending through surfaces of the body part in opposite directions and respectively forming openings on the surfaces of the body part, and at least one battery cell being arranged in each first accommodating cavity. Two first accommodating cavities are arranged in the box body, a battery cell can be placed in each first accommodating cavity, and the electrode terminal is located on the side of the housing facing away from the partition part. When there are a plurality of battery cells, the plurality of battery cells can be attached to each other, so that the space in the first accommodating cavity is more fully utilized, thereby improving the volumetric energy density of the battery.

The invention provides a battery monomer and a battery pack, and relates to the technical field of batteries. The battery monomer comprises a shell, an end cover, an electrode assembly, a pole and a current collector, the shell is provided with an accommodating cavity; the end cover is connected with the shell and covers the accommodating cavity; the electrode assembly is arranged in the accommodating cavity and is electrically connected with the shell; the pole penetrates through the end cover and is insulated from the end cover, the pole is provided with a sinking groove and a mounting through hole communicated with the sinking groove, and the sinking groove is located on the side, away from the electrode assembly, of the pole and provided with a groove wall; the current collecting piece comprises a first current collecting part penetrating through the mounting through hole, the first current collecting part is electrically connected with the electrode assembly, and the part, located in the sinking groove, of the first current collecting part is electrically connected with the groove wall. In the battery monomer provided by the invention, the shell is connected with the end cover without adopting an upsetting and sealing process, so that the space occupied by the turnup part of the shell is saved, and the energy density of the battery monomer is favorably improved.

The utility model provides a battery cell and a square-shell battery, and relates to the technical field of batteries. The cell has a winding center. The battery cell comprises a first pole piece, a first connecting piece and a first tab, the first pole piece comprises a plurality of straight sections, and at least part of the straight sections are connected with the first tab. The first tab comprises a first connecting part and a first bending part which are connected with each other, the first connecting part is connected with the straight section, and each first bending part is bent towards the winding center. The first bending parts of the plurality of first tabs are connected with the first connecting sheet, a first included angle alpha is formed between the first connecting part and the first bending part, and the first included angle alpha is greater than or equal to 90 degrees and less than or equal to 160 degrees. Therefore, the possibility that the tabs are reversely inserted to pierce the first pole piece can be reduced, the performance of the battery cell and the square-shell battery carrying the battery cell can be improved, and the possibility that the square-shell battery is short-circuited and the like to cause safety problems is reduced.

The invention provides a battery monomer, a battery and electric equipment, and relates to the field of batteries. The battery monomer comprises a shell, an end cover and a pressure relief mechanism, the shell is provided with an opening, the end cover seals the opening, and the end cover is welded with the shell to form a first welding printing part; the pressure relief mechanism is arranged on the end cover and comprises a weak part, and the weak part is configured to be at least partially cracked when the battery monomer is subjected to pressure relief. In the direction perpendicular to the thickness direction of the end cover, the minimum distance between the weak part and the first welding printing part is A, and the requirement that A is larger than or equal to 2.5 mm is met. The minimum distance between the weak part and the first welding printing part in the direction perpendicular to the thickness direction of the end cover is larger than or equal to 2.5 mm, so that the influence of high heat on the weak part when the shell and the end cover are welded is reduced, the risk that the weak part cracks in advance is reduced, and the service life of the single battery is prolonged.

A method for manufacturing a pouch-type secondary battery according to an embodiment of the present invention may include: a first sealing operation of fusing a lead film, which is attached to an electrode lead of an electrode assembly, to a sealing portion of a pouch in which the electrode assembly is accommodated; and a second sealing operation of sealing the sealing portion of the pouch. The first sealing operation may include: a heating process of irradiating with a laser beam a region which is present in the sealing portion of the pouch and corresponds to the lead film, thereby heating the lead film and melting a resin layer of the region; and a bonding process of compressing the region, thereby bonding the lead film and the melted resin layer.

A battery cell, a battery, and a power-consuming apparatus are provided. The battery cell includes a housing, terminal-post bodies, and a terminal-post cover plate. The housing defines an accommodating cavity and includes mounting holes through which the terminal-post bodies extend. Each terminal-post body has an abutting portion positioned outside the housing, and a sink groove at an end opposite the cavity. The sink groove is located closer to the central axis of the mounting hole than the abutting portion. The terminal-post cover plate covers the terminal-post bodies and includes connection portions that engage the terminal-post bodies at the sink grooves. Each connection portion is connected to the part of the terminal-post body located at the sink groove on the cavity side and is spaced from a groove wall near the abutting portion. This structure helps improve assembly reliability and electrical performance.

The utility model relates to the technical field of battery cover plates, and discloses a connecting structure of a rubber coating ring and a top cover plate, which comprises the top cover plate, a pole hole for a pole to pass through is arranged in the top cover plate, and the pole is provided with a middle section arranged in the pole hole in a penetrating manner; the periphery of the middle section is wrapped with a rubber coating ring, and a notch groove is formed in the periphery of the rubber coating ring. An upper plastic part is embedded in the pole hole, the periphery of the rubber coating ring is wrapped by the upper plastic part, the notch groove is embedded, and the pole, the top cover plate, the rubber coating ring and the upper plastic part are fixedly combined into a whole; the notch groove is formed in the periphery of the rubber coating ring, the upper plastic part can be embedded in the notch groove in the process of forming the upper plastic part through injection molding, and the upper plastic part and the top cover piece are combined into a whole, so that the torsion value is increased, the upper plastic part cannot fall off after being subjected to a fatigue test, the service life of the upper plastic part is prolonged, and the anti-rotation capability of the pole is improved.

The invention discloses a top cover assembly, a battery and an assembly method of the top cover assembly, the top cover assembly comprises a top cover sheet, a pole and upper plastic, the top cover sheet comprises a first plate body and an enclosing part, the enclosing part and the first plate body are connected to enclose to form a mounting groove, and a first limiting part is arranged in the mounting groove; the enclosing part comprises a first section and a second section, and the second section is of an annular structure with the consistent wall thickness; at least part of the structure of the pole is arranged in the mounting groove, and the pole is provided with a second limiting part; at least part of the structure of the upper plastic is arranged between the pole and the first section, the upper plastic is provided with a third limiting part and a fourth limiting part, the third limiting part is in limiting fit with the first limiting part in the circumferential direction, and the fourth limiting part is in limiting fit with the second limiting part in the circumferential direction. According to the invention, the enclosure part separates a limiting function from a spin riveting processing area through layering, and the second section is kept in an equal-wall-thickness annular structure, so that material accumulation or thinning is avoided during spin riveting processing, and the uniformity of extrusion force distributed along the periphery of the pole is improved, thereby ensuring the sealing performance.

The invention relates to the technical field of batteries, and particularly discloses a connecting structure of a tab and a battery cell cover plate and a battery cell, a tab precursor comprises a plurality of substrates stacked along a first direction, each substrate is led out from one end of a pole piece of a pole group along a second direction, a first welding mark is formed after the plurality of substrates are welded, and a second welding mark is formed after the plurality of substrates are welded. The tab precursor is cut along a cutting line to form a tab, the cutting line extends along a third direction and penetrates through the first welding mark, the part, which is not cut off, of the tab is a welding part, the welding part is welded with a pole integrated on the cover plate body to form a second welding mark, and then circuit connection between the pole group and the pole is realized. The arrangement of a connecting piece is omitted, the tabs of the pole group are directly welded on the pole columns, the assembly process is simple, the space utilization rate is high, and the energy density is favorably improved. The invention also provides a battery cell which comprises the connecting structure of the tab and the battery cell cover plate.

This application relates to the field of battery technologies and provides a casing assembly, a battery cell, a battery, and an electric apparatus. The casing assembly includes a casing and a sealing assembly. A through hole is provided on the casing, and the sealing assembly seals the through hole. An insulating member of the sealing assembly covers a conductive member, and the conductive member has a first contact portion and a second contact portion. A connecting member is formed with a hollow inner cavity, the insulating member fills the inner cavity, the connecting member is connected to the casing, and the first contact portion and the second contact portion are respectively located at an inner side and an outer side of the casing. According to this application, providing the casing assembly having the sealing assembly and blocking the through hole of the casing with the sealing assembly can effectively reduce occurrences of electrolyte leakage and improve sealing effect.

The pole column includes a first metal member 112 and a second metal member 113. The first metal member has a fitting groove 1121 provided thereon and an outer peripheral surface. A connection groove 1131 is provided in the second metal member. One end of the first metal member is fitted into the connection groove, and a fitting block 1132 protrudes from the groove wall of the connection groove toward the first metal member. The fitting block is fitted into the fitting groove. When the thickness of the groove wall of the connection groove is D and the dimension of the depth at which the fitting block is fitted into the fitting groove of the first metal member in the radial direction of the pole column is L1, 0 < L1 ≤ 0.5D is satisfied. 【Effect】According to the above, the first metal member and the second metal member are locked to each other in the axial direction of the pole column, effectively avoiding detachment from the connection between the first metal member and the second metal member. Moreover, by ensuring the cross-sectional dimension of the first metal member in the fitting groove and ensuring the strength of the first metal member, the performance such as the tensile resistance and vibration resistance of the pole column can be improved. Thereby, the reliability of the pole column can be improved.

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

Provided in the embodiments of the present application are a battery cell, a battery, a power consuming device, and a method and apparatus for manufacturing a battery cell. The connection of a plurality of electrode assemblies can be achieved in a battery cell, thereby improving the performance of the battery cell. The battery cell comprises: a plurality of electrode assemblies arranged in a first direction, an end portion of each electrode assembly in a second direction being provided with a tab, and the second direction being perpendicular to the first direction; and a connecting member configured to connect the tabs of the plurality of electrode assemblies and an electrode terminal of the battery cell, wherein the connecting member comprises a main body portion and a pin, the main body portion extends in the first direction and comprises a first surface and a second surface perpendicular to the second direction, the main body portion is provided with a plurality of through grooves penetrating the first surface and the second surface, and the plurality of through grooves are respectively configured to accommodate the tabs of the plurality of electrode assemblies, so that the tab of each electrode assembly passes through the corresponding through groove from the first surface and is electrically connected to the second surface, and the pin is arranged on the second surface and electrically connected to the electrode terminal.

A battery assembly according to the present disclosure comprises a plurality of batteries; a busbar electrically connected to electrode leads of the plurality of batteries; and a busbar frame having a busbar socket into which a portion of the busbar is inserted, the busbar frame being coupled to the busbar and supporting the busbar, and the busbar comprises a body portion to which the electrode leads overlapping each other are coupled; and a plug portion integral with the body portion, extending from the body portion toward the busbar frame, and configured to be inserted into the busbar socket to fix the body portion to the busbar frame.

The utility model relates to the technical field of batteries, in particular to a roll core structure and a battery. The roll core structure comprises a roll core body, a positive tab and a negative tab, the roll core body comprises a positive plate, a negative plate and a diaphragm, the diaphragm is clamped between the positive plate and the negative plate, and the positive plate, the negative plate and the diaphragm are wound to form the roll core body. One end of the positive tab is connected with the positive plate, the connecting part of the positive tab and the positive plate forms a positive connecting part which is positioned between the positive plate and the diaphragm, and the other end of the positive tab extends out of the roll core body to form a positive extension part; one end of the negative lug is connected with the negative plate, a negative connecting part is formed at the connecting part of the negative lug and the negative plate and is positioned between the negative plate and the diaphragm, and the other end of the negative lug extends out of the roll core body to form a negative extension part; and the positive connecting part and the negative connecting part are at least partially overlapped to form an overlapped region. Therefore, permeation gaps formed by the positive and negative tabs in the roll core structure can be increased, the positive and negative tabs are fully infiltrated by electrolyte, and the risk of lithium precipitation is reduced.

Battery equipped with a tracking and / or electrical parameter monitoring device. Battery (1) comprising a body (10) and a cover (40) carried by the body, the body housing one or more battery cells electrically connected to output terminals (20). The battery contains an electronic tracking device (50) disposed under the cover (40) and electrically powered by the battery, this tracking device being configured to transmit its geographic coordinates wirelessly to a remote receiver (200), at least when certain predefined conditions are met. Figure for the abbreviation: Fig. 1

The invention provides a battery monomer, a battery and a power utilization device. The battery monomer comprises a shell and a terminal assembly, the shell comprises a wall part, and the wall part is provided with an electrode lead-out hole. The terminal assembly includes an electrode terminal at least partially located on the wall portion and covering the electrode lead-out hole, an insulator at least partially surrounding the electrode terminal and connected to the electrode terminal, and a fixing member. Wherein the fixing piece comprises a main body part, a first connecting part and a first concave part, the main body part is fixed to the insulating piece, the first connecting part is connected to the main body part, the first concave part is arranged on the side, away from the wall part, of the first connecting part in the thickness direction of the wall part, and at least part of the first connecting part surrounds the outer side of the first concave part and is welded to the wall part. According to the invention, the reliability of the battery monomer can be effectively improved.

The invention is applicable to the technical field of batteries, and provides a battery monomer, a battery device and a power utilization device, the battery monomer comprises a shell and an electrode assembly, the electrode assembly is arranged in the shell, the electrode assembly comprises a body part, a plurality of first tabs are arranged on a first end surface of the body part at intervals, and the polarities of the plurality of tabs are the same. The current density distribution of the electrode assembly in the battery monomer provided by the invention is more uniform.

This disclosure relates to a cover assembly for a secondary battery. The cover assembly of the secondary battery includes: a current collector including a positive terminal electrically connected to the positive electrode of an electrode assembly and a negative terminal electrically connected to the negative electrode of the electrode assembly; a cover plate penetrated by the positive and negative terminals and including protrusions surrounding the outer peripheries of the positive and negative terminals, respectively; a first insulating member penetrated by the positive and negative terminals and disposed between the current collector and the cover plate; a support disposed between the protrusions and the positive terminal and between the protrusions and the negative terminal, respectively; and a second insulating member disposed between the support and the protrusions, respectively.

A lower plastic member, an end-cover assembly, an energy storage apparatus, and an energy storage system are provided. The lower plastic member (100) includes a body portion (110) and a vent portion (120). The vent portion (120) includes a vent plate (121), a first connecting rib (122), a second connecting rib (123), and a connecting edge-plate (124). The vent plate (121) has a third surface (121a) and a fourth surface (121b). The first connecting rib (122) and the second connecting rib (123) are connected to the third surface (121a). A first push-point (121d) is provided on the fourth surface (121b) at a position of the fourth surface (121b) that is positioned facing away from a connection between the third surface (121a) and the first connecting rib (122). A second push-point (121e) is provided on the fourth surface (121b) at a position of the fourth surface (121b) that is positioned facing away from a connection between the third surface (121a) and the second connecting rib (123).

A battery cell (20), a battery (100) and an electric device. The battery cell (20) comprises: a casing (21); an electrode assembly (22) arranged in the casing (21); an end cover assembly (23) for closing an opening (211) of the casing (21) in a first direction (X), the end cover assembly (23) comprising a cover plate (231) and an electrode terminal (232) electrically connected to the electrode assembly (22); and a deformable member (24) connected to the cover plate (231), wherein the deformable member (24) is configured to be deformable to come into contact with the electrode terminal (232); and the cover plate (231) comprises a mounting area (23a) for mounting the electrode terminal (232), and the mounting area (23a) has a reinforcing structure (233). When the battery cell (20) performs an overcharge protection function, the stable contact between the deformable member (24) and the electrode terminal (232) can be facilitated, thereby ensuring the reliability of the battery cell (20) itself.

A battery cell, a battery and an electric device. The battery cell comprises a casing and a terminal assembly, wherein the casing comprises a wall portion, in which an electrode lead-out hole is formed. The terminal assembly comprises an electrode terminal, an insulating member and a fixing member, wherein at least part of the electrode terminal is located at the wall portion and covers the electrode lead-out hole, and the insulating member at least partially surrounds the electrode terminal and is connected to the electrode terminal. The fixing member comprises a body portion, a first connecting portion, and a first recess, wherein the body portion is fixed to the insulating member, the first connecting portion is connected to the body portion, the first recess is disposed on the side of the first connecting portion away from the wall portion in the thickness direction of the wall portion, and at least part of the first connecting portion surrounds an outer side of the first recess and is welded to the wall portion.

An adhesive film for a metal terminal being interposed between a metal terminal electrically connected to an electrode of a power storage device element, and a power storage device external member that seals the power storage device element. The adhesive film is configured from a laminate provided with: a first polyolefin layer disposed on the metal terminal side; a base material; and a second polyolefin layer disposed on the power storage device external member side. Under the following measurement conditions, the restoration rate measured when an indenter is pressed in a vertical direction with respect to a cross section in a thickness direction of the first polyolefin layer is 46.0% or greater. Restoration rate measurement conditions are a load of 10 mN, a load application speed of 1 mN / 10 seconds, retention time of 10 seconds, a load releasing speed of 1 mN / 10 seconds, and measurement temperature of 25° C.

An electrical device includes: a housing part made of a metal and including a feedthrough therethrough, an opening of the feedthrough, a first region, and a second region, the opening receiving a conductive material or a conductor in a glass material or a glass-ceramic material, wherein: (i) the conductive material has a first coefficient of expansion α1, the glass material or the glass-ceramic material has a second coefficient of expansion α2, and the housing part has a third coefficient of expansion α3, the third coefficient of expansion α3 being always greater than the second coefficient of expansion α2; or (ii) the first region including a width W that is substantially perpendicular to the axis of the at least one opening, the width W of the first region being always greater than a thickness D2 and a thickness DE of the second region; or (iii) a combination of (i) and (ii).

The present application is applicable to the technical field of batteries (100), and provides a battery cell (10), a battery (100), and an electric device. The electric device comprises the battery (100), the battery (100) comprises the battery cell (10), and the battery cell (10) comprises a casing (2), an electrode assembly (1), and electrode terminals (3). The casing (2) is provided with lead-out holes (201); the electrode assembly (1) is provided in the casing (2); each electrode terminal (3) comprises a terminal body (31) and a first boss (32), and the terminal body (31) covers the corresponding lead-out hole (201); in the axial direction (Z) of the lead-out holes (201), each first boss (32) is provided at the end of the terminal body (31) close to the electrode assembly (1); and the first bosses (32) pass through the lead-out holes (201) and are connected to the electrode assembly (1). The electrode terminals (3) each comprise the first boss (32) provided in the corresponding lead-out hole (201), so that when the size of the casing (2) is fixed, the electrode terminals (3) can extend into the casing (2). In this way, the height of the portions of the electrode terminals (3) located outside the casing (2) can be reduced, thereby reducing the size of the battery cell (10), thus reducing the space occupied by the battery cell (10) in a case (20), improving the space utilization rate of the case (20), and improving the energy density of the battery (100).

The utility model relates to the technical field of batteries, and discloses a battery which comprises a packaging shell, a battery cell and two tabs, and an accommodating space is arranged in the packaging shell; the battery cell is arranged in the accommodating space; the two tabs are electrically connected to the battery cell and extend out of the packaging shell after being hermetically connected with the packaging shell; wherein at least one of the two tabs comprises at least one elastic bending part, and the elastic bending part is positioned in the accommodating space and is configured to extend when being stretched and / or shorten when being compressed; one of the two tabs is a positive tab, and the other tab is a negative tab, so that the problem that the stress at the connecting position of the tabs and the battery cell is increased can be solved.