1810results about "Electric connector introduction" patented technology

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 invention provides a battery monomer structure, which comprises a naked battery cell, wherein the naked battery cell is provided with a concave part I which is concave inwards; the Mylar film is wrapped on other parts except the concave part of the naked battery cell; the shell is provided with an opening end, and the opening end of the shell is provided with a concave part II which is concave inwards; the shell is provided with an opening end, the top cover assembly is provided with an insulating plastic plate in a clamping manner, the bottom of the top cover assembly is provided with an insulating plastic plate in a clamping manner, the top cover assembly is arranged at the opening end of the shell in a covering manner, and the shell and the top cover assembly are enclosed to form a containing space. The top cover plate and the naked battery cell are insulated through the lower plastic, the bent position of the tab and the shell are insulated through the plastic clamping plate, the safety of the battery cell is protected, the battery pole is concave inwards to improve the space utilization rate of the battery, meanwhile, the resistance is reduced by reducing the current passing path, namely, the internal resistance is reduced to reduce the self heat release of the battery, and the temperature rise of the battery is reduced.

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

The invention discloses a secondary battery and electric equipment, the secondary battery comprises a shell and an electrode assembly, the electrode assembly is accommodated in the shell, the shell comprises a shell body and a shell cover, and the shell cover comprises a first edge and a second edge adjacent to the first edge. The shell cover is provided with a groove at least comprising a first groove section and a second groove section, and the first groove section and the second groove section are in a curve shape when observed in the thickness direction of the shell cover. The first groove section comprises a first end connected with the second groove section and a second end serving as the tail end of the groove, the first groove section extends in the direction away from the second edge, and the first groove section is parallel to the first edge or gradually away from the first edge in the extending direction from the first end to the second end. And when the internal pressure of the secondary battery is too high, the groove can be broken for pressure relief and air exhaust, so that the risk that the secondary battery catches fire and explodes is reduced. And the first groove section can guide cracks of the groove, so that the possibility that the shell cover is exploded along with the groove is reduced, and the safety of the secondary battery is improved.

The utility model discloses a secondary battery top cover. Comprising a cover plate, an isolation piece, a conductive block, a pole and a sealing piece, wherein a pole hole is formed in the cover plate in a penetrating manner; the isolation piece is arranged on the surface of the cover plate and is provided with a pole via hole corresponding to the pole hole; the conductive block is arranged in the isolation piece; a riveting groove which does not upwards penetrate through the conductive block is upwards formed in the conductive block from the bottom surface, a riveting part which is riveted and fixed with the riveting groove is arranged at the top of the pole, and the riveting groove comprises a riveting flange which is formed by extending from the periphery of the riveting groove along the radial inner side and at least covers part of the riveting groove; the riveting part comprises a riveting convex edge which extends into the riveting groove and is at least partially located on the upper side of the riveting flange. The utility model also comprises a secondary battery.

The invention discloses a battery monomer, a preparation method thereof, a battery and a power utilization device. The battery cell comprises: a housing provided with a pole; the electrode assembly is arranged in the shell and comprises an active material coating part and a tab, and the tab is connected with the pole in a welding manner to form a welding mark; the welding mark comprises a first welding seam and a second welding seam, the second welding seam is located on one side of the width direction of the first welding seam and partially overlaps with the first welding seam, and the maximum thickness of the first welding seam is smaller than that of the second welding seam. In the technical scheme of the embodiment of the invention, the first welding seam is formed on one side of the width direction of the second welding seam, so that on one hand, the first welding seam can be used for effectively reducing the probability of welding cracks of multiple layers of tab pieces of the tab and reducing overcurrent temperature rise, thereby reducing the probability of thermal runaway of the electrode assembly due to excessive temperature rise; and on the other hand, the anti-stripping strength of the welding marks on the tabs can be increased, and the reliability of the single battery is remarkably improved.

The utility model relates to the technical field of batteries, and discloses a cover plate structure and a battery cell, the cover plate structure comprises: a cover plate body, which is provided with two spaced welding through holes, each welding through hole is suitable for corresponding to a partial area on a connecting sheet and a group of tabs, and the thickness of the cover plate body is T0; the two poles are arranged on the cover plate body and penetrate through the cover plate body; each sealing plate is arranged in the corresponding welding through hole in a covering mode so as to seal the corresponding welding through hole, a clamping groove is formed in the lower side of each sealing plate, the thickness of each sealing plate is T1, and T1 / T0 is larger than or equal to 0.6 and smaller than or equal to 1; and each insulating part is arranged on the lower side of the corresponding sealing plate, each insulating part is provided with a buckle corresponding to the corresponding clamping groove, and the buckles are matched with the clamping grooves in a clamped mode. The welding through holes are convenient for welding equipment to weld the tabs and the connecting pieces, poor welding is avoided, the sealing plate covers the welding through holes to ensure the sealing performance, the insulating part is clamped and matched with the sealing plate, and the reliability is high.

The utility model provides an anti-twist top cover for a secondary battery, which is characterized in that a turnover ring is arranged on the surface of a top cover sheet, and the turnover ring is turned over towards a pole component and is used for preventing the pole component from moving upwards; a through hole and a limiting groove are formed in the surface of the pin, the pin is connected to the bottom of the pole assembly in a clamped mode, a limiting block for preventing the pin from twisting is arranged on the side edge of the bottom of the lower plastic, and a positioning column matched with the limiting groove is arranged on the surface of the bottom of the lower plastic; according to the utility model, the pole component is fixed on the mounting hole through the folding ring, the through hole on the pin is sleeved at the bottom of the pole, the positioning column and the limiting blocks are arranged on the lower plastic, the pin is assembled at the bottom of the lower plastic and sleeved on the pole, and the limiting blocks and the positioning column on the left and right sides form a triangular structure. The pins are limited by the positioning columns and the limiting blocks on the two sides, so that the pins are effectively prevented from twisting, and the safety and reliability of the battery are improved.

A battery pack comprising a frame and two or more battery cells installed to the frame. The two or more battery cells are interconnected by a rotatable connector which is configured to enable electrical connections between the two or more battery cells. The rotatable connector is adapted to be switched between at least a first rotational position in which the two or more battery cells being electrically connected, and a second rotational position, in which the two or more battery cells being not electrically connected. When the user actuates the knob on the battery pack, the connecting terminals change their rotational positions from a non-conducting position to a conducting position, thereby enabling the electrical connections between the groups of battery cells.

The utility model provides a battery monomer, a battery device and a power utilization device, and belongs to the technical field of batteries. The battery monomer comprises a shell, an electrode assembly, an electrode terminal, a fixing piece and a first insulating piece, the electrode assembly is housed within the housing. The electrode terminal is disposed on a wall portion of the housing and is electrically connected to the electrode assembly. The fixing piece is arranged on the peripheral side of the electrode terminal, the fixing piece comprises a base part and a limiting part, the base part is connected to the wall part, the limiting part is connected to the base part and extends in the direction close to the electrode terminal, and the limiting part is configured to limit the electrode terminal to move in the direction away from the electrode assembly in the thickness direction of the wall part. And at least part of the first insulating part is arranged between the electrode terminal and the limiting part. The thickness of the limiting part is smaller than that of the base part. Therefore, the space for accommodating the first insulating part between the limiting part and the electrode terminal can be enlarged while the connection strength requirement of the base part and the wall part of the fixing part is met, so that the creepage distance between the limiting part and the electrode terminal can be increased.

A secondary battery, an electronic device, and a method for manufacturing a secondary battery. The battery comprises a housing, an electrode assembly, a cover plate and a current collector member; one side of the housing is an opening side, and the other side opposite to said side of the housing is a closed side; the housing comprises a first cylinder and a second cylinder which are arranged in a segmented manner; one end of the first cylinder is provided with an end wall to form the closed side, and the other end of the first cylinder comprises a first connecting segment; one end of the second cylinder is provided with an opening to form the opening side, and the other end of the second cylinder comprises a second connecting segment; the second connecting segment is fixedly connected to the first connecting segment; a roll groove recessed inwards is formed in the second cylinder in a surrounding manner; the electrode assembly is accommodated in the housing; the cover plate is sealedly mounted at the opening; the current collector member is arranged between the electrode assembly and the cover plate and comprises a tab connecting portion and a housing connecting portion; the tab connecting portion is electrically connected to a tab; and the case connecting portion is electrically connected to the second cylinder. The battery structure can solve the technical problem of the falling of welding slag onto the housing during the welding of the current collector member to the housing.

The utility model provides a liquid cooling module which is characterized in that a plurality of cells are arranged in parallel to form a battery pack, end plates are respectively arranged at two ends of the battery pack, a positive pole and a negative pole are arranged at the top of each cell, a plurality of busbars are arranged on the battery pack, and the positive pole and the negative pole of each cell are respectively connected by the busbars. The liquid cooling plate is arranged at the top of the battery cell and located between the positive pole and the negative pole, and the heat conduction structural adhesive is arranged between the liquid cooling plate and the top of the battery pack; the liquid cooling plate is arranged between the positive pole and the negative pole by fully utilizing the protruding heights of the positive pole and the negative pole, so that the space occupied by the liquid cooling plate in height is reduced, and the space utilization rate is improved; the liquid cooling plate is integrated on the battery module, so that the material of the liquid cooling plate is reduced, and the cost is reduced; the liquid cooling plate is arranged at the top of the battery cell, so that the risks of poor insulation, short circuit and the like caused by liquid cooling plate breakage due to bottom collision of the battery pack are reduced, and the safety of the battery pack is improved.

The utility model provides a negative pole and a battery cover plate, and relates to the technical field of energy storage components. The negative pole comprises an aluminum main body part, a copper extension part and an upper insulation sealing piece; the copper extension part is arranged at the bottom of the aluminum main body part; the bottom of the copper extension part is provided with an insulation connection step, and the insulation connection step is provided with a reinforcing connection ring groove. The upper insulation sealing piece covers the aluminum main body part, and the upper insulation sealing piece is provided with a connecting ring matched with the reinforcing connecting ring groove. The battery cover plate comprises a cover plate, a positive pole, a lower insulation sealing piece and a negative pole; the negative pole and the positive pole are both arranged on the cover plate, and upper insulation sealing pieces are arranged between the negative pole and the cover plate and between the positive pole and the cover plate; the lower insulation sealing piece is arranged at the bottom of the cover plate. The technical effect of reducing the sealing failure probability of the negative pole is achieved.

The invention provides a battery monomer, a battery, a power utilization device and an energy storage cabinet, and belongs to the technical field of batteries. A battery cell includes a housing, a first electrode terminal, a first current collecting member, and a plurality of electrode assemblies. The housing has a wall portion. The first electrode terminal is attached to the wall portion. The plurality of electrode assemblies are accommodated in the shell, the plurality of electrode assemblies are stacked along a first direction, each electrode assembly comprises a main body part and a first tab, the first tab is arranged at one end of the main body part along a second direction, the first tabs of the plurality of electrode assemblies are positioned at the same end of the main body part, and the second direction intersects with the first direction. The first current collecting member electrically connects the first electrode terminal and each of the first tabs. Therefore, a plurality of first current collecting components do not need to be arranged in the shell to be connected with the first tabs of the plurality of electrode assemblies, and the thickness or the volume of the single electrode assembly does not need to be increased, so that the manufacturing difficulty of the electrode assemblies can be effectively reduced, and the manufacturing difficulty of the large-capacity battery monomer is reduced.

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 utility model discloses an end cover assembly, a battery monomer, a battery and a power utilization device. The end cover assembly provided by the embodiment of the utility model comprises an end cover which is provided with a first through hole; the electrode leading-out piece comprises a connecting plate and a pole terminal protruding out of the surface of the connecting plate, at least part of the pole terminal is arranged in the first through hole, the connecting plate is located on one side of the end cover, and the connecting plate is used for being connected with a tab of the electrode assembly. In the technical scheme of the embodiment of the invention, the electrode lead-out piece is arranged, so that the contact area of the pole and the tab is increased, the overcurrent area of the pole terminal and the connecting plate is enlarged, the internal resistance is reduced, the temperature rise is reduced, and the safety performance of the battery monomer is improved.

The utility model provides an insulation structure and a battery. The insulation structure comprises an insulation body and baffles, the baffles are arranged on at least one side of the insulation body in the width direction, the baffles are rotationally connected with the insulation body, and the rotation axis of the baffles extends in the length direction of the insulation body. The baffle comprises a baffle main body and a connecting part which are mutually connected, the baffle main body extends along the length direction of the insulating body, the connecting part is rotatably connected with the insulating body, and the baffle main body and the insulating body are separately arranged. According to the application, the tab of the battery cell and the shell of the battery are isolated by utilizing the rotary connection of the baffle plate and the insulating body, so that the risk of short circuit caused by contact between the tab of the battery cell and the shell of the battery in a bending state is reduced; the baffle main body and the insulating body are separately arranged, so that the stress generated after the baffle is bent relative to the insulating body and when the baffle is extruded by the tab can be reduced, and the structural stability of the insulating structure in the use process can be ensured.

The invention provides a secondary battery, electronic equipment and a manufacturing method of the secondary battery. The secondary battery comprises a shell, an electrode assembly, a cover plate and a current collecting component, one side of the shell is an open side, the other opposite side of the shell is a closed side, and the shell comprises a first barrel and a second barrel which are arranged in a segmented mode; one end of the first barrel is provided with an end wall to form a closed side, the other end of the first barrel comprises a first connecting section, one end of the second barrel is provided with an opening to form an open side, the other end of the second barrel comprises a second connecting section, the second connecting section is fixedly connected with the first connecting section, and a rolling groove which is sunken inwards is formed in the second barrel in a surrounding mode; the electrode assembly is accommodated in the shell; the cover plate is hermetically mounted at the opening; the current collecting component is arranged between the electrode assembly and the cover plate and comprises a tab connecting part and a shell connecting part, the tab connecting part is electrically connected with the tab, and the shell connecting part is electrically connected with the second cylinder; the technical problem that when a secondary battery adopts a mechanical sealing process, welding slag falls into a shell in the welding process of a current collecting component and the shell is solved.

The utility model relates to the technical field of batteries, and discloses a battery cell and a battery pack, the battery cell mainly comprises a shell, a first cover plate, a second cover plate, a sealing plate and an insulating plate; openings are respectively formed in two opposite sides of the shell, a pole group is arranged in the shell, and a pole lug is arranged at one end of the pole group; the first cover plate and the second cover plate respectively cover the opening of the shell, a through hole and a first pole are arranged on the first cover plate at an interval, a first connecting piece is arranged in the first cover plate, one end of the first connecting piece is connected with the first pole, and the other end of the first connecting piece extends to the through hole and is connected with the tab; the sealing plate and the insulating plate are arranged in the through hole, a groove is formed in the bottom face of the sealing plate, a hot melting column is arranged on the top face of the insulating plate, the insulating plate is connected with the sealing plate through hot melting, and the hot melting column is connected with the groove in an inserted mode. According to the utility model, the first connecting sheets and the tabs are arranged in the through holes, so that the bending times can be reduced, the space utilization rate is improved, the sealing plate is connected with the insulating plate through hot melting, the connecting strength is higher, and the use cost is lower.

The utility model provides a single battery and a battery pack, and relates to the technical field of batteries. The single battery comprises a shell, an anti-explosion valve, an electrode assembly and a supporting piece. An installation hole is formed in the bottom wall of the shell, the anti-explosion valve is connected with the bottom wall to seal the installation hole, the electrode assembly is located in the containing cavity of the shell, the supporting piece is located in the containing cavity and located between the electrode assembly and the bottom wall, the supporting piece comprises a first supporting part and a second supporting part, and the second supporting part is connected to the side, away from the electrode assembly, of the first supporting part. A positioning groove communicated with the containing cavity is formed in the bottom wall, a part of the second supporting part is located in the positioning groove, so that the first supporting part and the bottom wall jointly define an exhaust channel, and the exhaust channel is communicated with the containing cavity. According to the single battery provided by the invention, the exhaust channel is jointly defined by the first supporting part and the bottom wall, so that high-temperature and high-pressure gas can be conveniently evacuated when thermal runaway occurs; and through cooperation of the positioning groove and the second supporting part, the stability of the supporting piece is improved.

The utility model belongs to the technical field of batteries, and discloses a battery shell and a battery, the battery shell comprises a shell body, a cover plate module, a composite cover plate, a composite pole and a protective end plate, the cover plate module comprises a first cover plate body and a connecting pole penetrating through the first cover plate body, the composite cover plate is provided with a penetrating structure for the pole lug to extend out, the composite pole column is arranged on one side, deviating from the cover plate module, of the composite cover plate, the pole lug extending out of the accommodating cavity realizes current conduction through the composite pole column, and the protective end plate is provided with an avoiding through hole for the pole lug to penetrate through. The tab on one side and the composite pole located on the outer side of the containing cavity achieve current conduction through the penetrating structure, the space occupied by the composite pole and the space for connecting the bent tab and the composite pole are saved, the space utilization rate is increased, space is provided for increasing the size of the pole set, the energy density is increased, and the service life of the pole set is prolonged. And the pole lug is prevented from skewing during passing through the protection end plate, so that the reliability of the structure is improved.

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 utility model relates to the technical field of batteries, and discloses a battery cell and a battery pack. The battery cell comprises a shell, the shell comprises an end plate and a side plate surrounding the end plate, a cavity with an opening is defined by the end plate and the side plate, and a welding through hole and a mounting hole are formed in the end plate; the electrode group is arranged in the cavity, one side of the electrode group is provided with a plurality of tab groups corresponding to one welding through hole, and each tab group comprises two tabs; the polar columns are mounted at the mounting holes; the connecting piece is provided with a pole connecting segment and a tab connecting segment, the pole connecting segment is connected with the pole, the tab connecting segment is provided with penetrating holes for the corresponding tab group to penetrate through, each tab penetrates through the corresponding penetrating hole and then is bent to form a bent part, and the bent part is welded with the tab connecting segment through a welding through hole. And only the tabs need to be bent, the connecting sheets do not need to be bent, and the thickness of the connecting sheets and the tabs is reduced after connection, so that the occupied space in the battery cell is reduced, the energy density of the battery cell is improved, and the utilization rate of the space in the battery cell is improved.

The utility model belongs to the technical field of medical instruments and equipment, and discloses a cover plate assembly, a minicell and a capsule endoscope, the cover plate assembly comprises a cover plate, a pole structure and a sealing ring, the cover plate is used for sealing an opening and is in sealing fit with the side wall of the opening, so that sealing is formed between the cover plate and a shell; a sealing ring accommodating groove is formed in the peripheral side wall of the pole structure; the sealing ring is arranged on the peripheral side wall of the pole structure, is accommodated in the sealing ring accommodating groove and is in sealing fit with the sealing ring accommodating groove, so that the sealing performance between the sealing ring and the pole structure is enhanced, the position of the sealing ring relative to the pole structure is fixed, the assembly is convenient, and the service life is prolonged. The outer peripheral side wall of the sealing ring is in sealing fit with the inner peripheral side wall of the cover plate, so that the inner side and the outer side of the sealing ring can form good sealing with the pole structure and the cover plate respectively, liquid leakage is avoided, meanwhile, a traditional glass sealing structure is replaced by the sealing ring, and the machining and precision control difficulty can be reduced.

The invention belongs to the technical field of batteries, and discloses a battery monomer which comprises a battery shell, a battery cover plate and a pole group, the battery shell is provided with a containing cavity and an opening which are communicated, the opening is located in the side, facing a first direction, of the battery shell, the battery cover plate comprises a plate body, and the plate body covers the opening; the plate body comprises a plate body part and a first protruding part which is connected with the plate body part and protrudes towards a first direction, a capacity increasing groove is formed in the side, deviating from the first direction, of the first protruding part, the pole group comprises a pole group body structure and a first protruding structure which is connected to the side, facing the first direction, of the pole group body structure, and the pole group body structure is arranged in the containing cavity; all side walls, parallel to the first direction, of the pole group body structure are attached to the inner wall of the containing cavity, the first protruding structures are located in the capacity increasing grooves, the groove bottoms of the capacity increasing grooves and at least one group of oppositely-arranged inner walls of the capacity increasing grooves are all attached to the first protruding structures, the probability of deformation and damage of the plate bodies of the single batteries is low, the pole group capacity is large, and the capacity of the single batteries is high. And the moving probability of the pole group is low.

The utility model relates to the technical field of batteries, and discloses a battery cell and a battery pack, and the battery cell comprises a shell, a pole group, a pole post and a connecting sheet, according to the battery cell with the structure, the connecting sheets are bent upwards, and the outward concave areas are arranged on the pole columns, so that the internal space of the pole columns is fully utilized to provide upward bending space for the connecting sheets under the condition that the external occupied space of the pole columns is not changed, and the space occupied by downward bending of the connecting sheets is saved, so that the space utilization rate of the battery cell is effectively improved, and the service life of the battery cell is prolonged. And the energy density of the battery cell is improved. The full tabs are arranged at the end parts of the pole groups and are attached to the end surfaces of the pole groups, so that the space occupied by the tabs can be effectively reduced, and the space utilization rate of the battery cell can be further improved; meanwhile, the welding position of the connecting piece and the pole is positioned in the pole, so that the welding position of the connecting piece and the pole is far away from the lower plastic, the influence of high welding temperature on the lower plastic can be effectively avoided during welding, the thermal melting of the lower plastic is avoided, and the safety and reliability of the battery can be effectively ensured.

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.

The utility model relates to the technical field of power batteries, and discloses a battery cell and a battery pack, the battery cell comprises a shell, one side of which is provided with an opening; the peripheral contour of the cover plate is matched with the shape of the opening of the shell, a pair of pole columns are installed on the cover plate, the pole columns penetrate through the cover plate, and a through groove is formed in the position, between the pole columns, of the cover plate; one end of each connecting sheet is connected with the corresponding pole, and the other end of each connecting sheet extends to the position of the through groove; the pole group is arranged in the shell, one end of the pole group is provided with a pole lug, and the pole lug extends towards the direction of the cover plate and is bent towards the direction of the connecting sheet; the periphery outline of the sealing plate is matched with the through groove, a liquid injection hole is formed in the sealing plate, a plurality of shielding parts are arranged at the position, located at the liquid injection hole, of the lower surface of the sealing plate, and the shielding parts are distributed at intervals in the circumferential direction of the liquid injection hole. And the liquid injection is difficult, so that the production efficiency is influenced.

The invention discloses a battery shell assembly, a battery and a battery pack, and relates to the technical field of batteries, the battery shell assembly comprises a shell, a pole and an insulating part, the pole is arranged on a first wall of the shell, the pole comprises a pole body and a first protruding part, the first protruding part is arranged on the peripheral side of the pole body, and the first protruding part is arranged in the shell; the projection of the first protruding part in the first direction is at least partially overlapped with the first wall; the insulating part is at least partially arranged between the first wall and the first protruding part, the high-temperature pressure-bearing change rate of the insulating part is k, the spacing distance between the first wall and the first protruding part in the first direction is d, and the parameters meet a preset relationship, so that the shell, the pole and the insulating part are matched with each other, and the insulating part is not easy to deform in the working process of the battery; deformation and bending at the joint of the first wall and the insulating part are avoided, and the risk of lap joint of the first wall and the pole is further avoided. The battery and the battery pack provided by the invention apply the battery shell assembly and have the beneficial effects of the shell assembly.

The invention relates to the technical field of power batteries, and particularly discloses a battery cell shell and a battery cell, the battery cell shell comprises a peripheral side plate and a bottom plate, and the bottom plate and the peripheral side plate jointly define an accommodating cavity for mounting a pole group. A groove is formed in the end face of the side, facing the containing cavity, of the bottom plate and surrounds the periphery of the bottom plate. The groove provides an avoiding space for the sharp corner of one end, which is arranged in the accommodating cavity, of the pole group, so that the sharp corner of one end, which is arranged in the accommodating cavity, of the pole group does not need to be cut off, the coating area of positive and negative electrode materials on the pole group is increased, the capacity of the battery cell is improved, and the battery cell shell is relatively high in compression strength and good in safety. The invention also provides a battery cell which comprises the battery cell shell.