95results about How to "Improve welding yield" patented technology

The invention discloses a welding strategy determination method and device, a nonvolatile storage medium and electronic equipment. The method comprises the steps that a plurality of target welding parameters are determined according to first associated data, and the first associated data represent the association degrees of different candidate welding parameters and welding results; based on the historical welding result and historical parameter values corresponding to the multiple target welding parameters, target parameter values corresponding to the multiple target welding parameters are determined; and according to the target parameter values corresponding to the multiple target welding parameters, a target control strategy is obtained. The technical problem that the welding yield is reduced due to the fact that control strategy setting is not ideal in the prior art is solved.

A novel hinge welding and positioning tool comprises a copper rod, a brass plate installed on the copper rod and a red copper plate arranged on the brass plate, an execution command comprises a jacking air cylinder, a cylindrical rod fixed to the jacking air cylinder and an air cylinder top plate of the cylindrical rod, and the cylindrical rod and the air cylinder top plate are vertically arranged; during use, a to-be-welded plate and a hinge positioning hole are combined and then placed on the plane of the red copper plate, the jacking air cylinder is controlled by an air channel of the throttling valve to execute actions, jacking is conducted from the bottom face of the red copper plate, and therefore the space position concentricity of the hinge and the plate is limited and fixed. Plate welding can be carried out through a welding robot or other manual welding machines and the like, after welding is completed, the jacking air cylinder returns to the zero position, after the cylindrical rod is loosened, the material taking action is manually completed, the jacking air cylinder can stretch out and draw back or jack up according to the actual situation, a welding tool does not need to be replaced due to product replacement, plate welding can be carried out according to various situations, and the welding efficiency is improved. And the technical effect of efficient and rapid plate welding operation is achieved.

The embodiment of the invention discloses a chip packaging structure, a preparation method thereof and electronic equipment, and relates to the technical field of semiconductors. The chip packaging structure comprises a packaging substrate, a first component, a second component and an elevating assembly. The package substrate has a first surface and a second surface. The first component is connected to the first surface. The second component and the elevated assembly are connected to the second surface. The elevating assembly comprises a fixing layer and a plurality of conductive columns, and the conductive columns extend in the direction perpendicular to the second surface. The fixing layer surrounds part of the side surfaces of the conductive columns to limit the displacement of the conductive columns. The surface of one side, close to the packaging substrate, of each conductive column is connected with the second surface. The fixing layer fixes the plurality of conductive posts such that the elevated assembly can be used as a single part. In the process of connecting the conductive columns with the packaging substrate, the plurality of conductive columns can be connected to the second surface at the same time, the plurality of conductive columns do not need to be punched one by one, and the yield of the chip packaging structure can be improved.

The invention discloses inserting piece silver point welding equipment which comprises a machine body, a working table, an inserting piece feeding mechanism, a silver point feeding mechanism, a positioning tool, a discharging mechanism and a welding mechanism. The positioning tool comprises a rack, a floating table, a buffer piece, a positioning table with positioning grooves, a plurality of side grooves, a plurality of clamping lugs, a plurality of movable clamping blocks with clamping grooves, a floating control mechanism and a position control mechanism. The floating control mechanism controls the movable clamping blocks to stretch into the side grooves, the clamping grooves are clamped with the corresponding clamping lugs, the position limiting mechanism fixes the floating control mechanism, the limiting mechanism and the movable clamping blocks are fixed, and therefore installation of the positioning table is completed. The buffer part absorbs tiny vibration generated in the welding process and displacement generated by the positioning table when the workpiece is heated and deformed.

The invention relates to the field of pressure vessel machining equipment, and provides a pressure vessel seal head welding frame with a centering structure, which comprises a working base, a vessel fixing assembly, a seal head fixing assembly and a synchronous welding assembly, the container fixing assembly comprises clamping and fixing bases fixedly connected to the top of the working base, a servo motor drives a rotary disc to rotate, automatic transfer of the end socket from the container fixing assembly to the end socket fixing assembly is achieved, in addition, a clamping motor drives a driving wheel and a driven wheel, four clamping bases are driven to move synchronously, and the end socket fixing assembly is driven to move synchronously. According to the pressure vessel welding device, stable clamping of a pressure vessel is achieved, the working efficiency and the clamping accuracy are improved, the four first heating assemblies are evenly arranged, the uniformity of the heating process is ensured, and the welding quality is further improved.

The utility model discloses a positioning mechanism which comprises a base, a linkage assembly, a driving assembly and a plurality of positioning assemblies, the base comprises a bottom seat and a top seat which are connected with each other and form a cavity, and a plurality of bearing parts and bearing positions in one-to-one correspondence with the positioning assemblies are distributed on the top seat; the linkage assembly comprises a linkage piece which is contained in the cavity and elastically floats between the base and the top base. The driving assembly comprises an eccentric part which is rotationally arranged on the top seat in a penetrating mode and eccentrically abuts against the linkage part; each positioning assembly comprises a positioning seat which is accommodated in the cavity and is adjacent to the corresponding bearing position, and a first positioning piece and a second positioning piece which are slidably and elastically connected to the positioning seat; and the linkage piece elastically floats so as to drive the first positioning piece and the second positioning piece to be close to the corresponding bearing positions respectively through matching and abutting between the linkage piece and the inclined surfaces of the first positioning piece and the second positioning piece, so that the parts are tightly pressed on the corresponding bearing positions. According to the positioning mechanism, the flexible clamping part is positioned, the collision and scratching conditions of the part are reduced, and the welding yield is increased.

The invention relates to the technical field of new energy, and discloses a battery and a battery pack, the battery comprises: a shell, the shell contains a Ti element, and the mass of the Ti element accounts for more than or equal to 60% of the total mass of the shell; the pole column is arranged on the shell; the battery cell comprises a battery cell body and tabs, the tabs comprise a positive tab and a negative tab, one of the positive tab and the negative tab is electrically connected with the pole, and the other one of the positive tab and the negative tab is electrically connected with the shell; the ratio of the mass of the Ti element of the shell to the total mass of the shell is a, the conductivity of the shell is b, and the lead-out size of the tab from the cell body is c; a. C / b is greater than or equal to 99 and less than or equal to 3650. According to the battery provided by the invention, the relationship among a, b and c is comprehensively controlled, so that the light weight of the shell is realized, the over-current capability of the battery can be met, the battery is prevented from generating relatively large temperature rise, and the condition that the safety performance of the battery is poor is prevented.

The invention discloses a welding strip clamping mechanism which comprises a first clamping unit located on the upper side of a battery piece and a second clamping unit located on the lower side of the battery piece. The first clamping unit comprises a base plate and a driving structure installed on the base plate. The driving structure comprises a driving part I, a driving part II and a driving part III; the first clamping unit further comprises a first sliding piece, a second sliding piece, a first clamping piece and a second clamping piece. The two sides of the first sliding piece are fixedly connected with a first driving piece and a first clamping piece correspondingly. The two sides of the second sliding piece are fixedly connected with a second driving piece and a second clamping piece correspondingly. The second clamping unit comprises a guide groove plate. The power mechanism, the moving part, the first turning assembly and the second turning assembly are arranged on the lower side of the guide groove plate; one end of the moving part is fixedly connected with the power mechanism, and the other end is slidably connected with the turning assembly I and the turning assembly II; the second clamping unit further comprises a third clamping piece and a fourth clamping piece. The third clamping piece and the fourth clamping piece are fixedly connected with the second direction changing assembly and the first direction changing assembly respectively.

The invention relates to the technical field of automatic welding, and discloses a machine manufacturing steel plate welding device which comprises a first supporting frame, supporting legs are fixedly connected to the outer wall of the bottom of the first supporting frame, a first fixing frame is fixedly connected to the inner wall of the first supporting frame, and a groove is formed in the inner wall of the first fixing frame; a second supporting frame is fixedly connected to the outer wall of the top of the first supporting frame, a fixing shaft is fixedly connected to the inner wall of the second supporting frame, and a first driving motor is fixedly connected to the outer wall of the second supporting frame. When the steel plate is turned over through the adjusting mechanism, the second sliding frames on the two sides of the steel plate are turned over in the same direction at the same time, so that the risk of weld joint cracking when the steel plate is turned over is reduced, and the welding yield and efficiency of the steel plate are improved.

This invention belongs to the field of battery technology and discloses an ultrasonic welding head structure, ultrasonic welding equipment, and a battery. The ultrasonic welding head structure includes a first welding head and a second welding head. The thickness of the first electrode tab is t1. The first welding head includes a first welding head body and a first welding tooth. The first welding tooth is disposed on the first welding head body and has a tooth height of h1, a1≤h1 / t1≤b1, where a1 is a first preset minimum value and b1 is a first preset maximum value. The thickness of the second electrode tab is t2. The second welding head includes a second welding head body and a second welding tooth. The second welding tooth is disposed on the second welding head body and has a tooth height of h2, a2≤h2 / t2≤b2, where a2 is a second preset minimum value and b2 is a second preset maximum value. The hardness of the first electrode tab is less than that of the second electrode tab, and the thickness of the first electrode tab is greater than that of the second electrode tab, a1>a2, b1<b2, in order to improve the welding yield of the first electrode tab and the first adapter piece.

The utility model relates to automatic junction box welding equipment for a perovskite thin-film solar cell panel, which comprises a welding unit and a junction box carrying unit, and the junction box carrying unit is arranged on one side of the welding unit along the positive direction of an X axis. A junction box is grabbed out of a stacked tray through a double-station linear motor carrying mechanism, automatic feeding is carried out, the junction box is put into a middle bus bar of a perovskite thin film solar cell panel, then the bus bar is pressed on the junction box through a normalizing air cylinder, meanwhile, a hot-pressing welding head is moved to the position above the junction box, the bus bar is welded to the junction box, and the junction box is welded to the bottom of the junction box. And the welding efficiency and yield of the junction box of the perovskite thin-film solar cell panel are improved.

The application relates to the technical field of batteries, and provides a battery terminal structure, a cover plate structure, a battery, a battery pack and an electric equipment. The battery terminal structure comprises a terminal platform, the terminal platform is used for being connected with a tab of a battery; a cover, the cover comprises a cover body part and a terminal part, the cover body part comprises a body part and a connecting part, the body part is formed with an accommodating space with an opening on one side, at least part of the terminal part is located in the accommodating space, and the connecting part is used for fixedly connecting with the terminal platform; and the connecting part is arranged on a circumferential edge of the terminal part. According to the embodiment of the application, the processing difficulty of the battery can be simplified, and the process cost is reduced.

The utility model discloses a battery shell, a battery and electric equipment, the battery shell comprises a shell and a plurality of cover plates, the shell comprises a first side plate and a second side plate fixedly arranged on the first side plate; a battery cell accommodating cavity and a plurality of openings communicated with the battery cell accommodating cavity are defined by the first side plate and the second side plate; first limiting parts are arranged at the openings, second limiting parts connected with the first limiting parts in a matched mode are arranged on the cover plates, and the multiple cover plates are fixed to the multiple openings in a covering mode so as to seal the battery cell containing cavity. The cover plate is provided with the second limiting part which is adaptively connected with the first limiting part, so that the outer side of the cover plate can be limited to be flush with the outer side of the shell, the connection precision between the cover plate and the shell is improved, the cover plate and the shell are welded and fixed, and the welding quality and the welding yield are improved.

The present application relates to a kind of automobile executor assembly equipment, for the loading of parts in succession, cover and welding operation of being carried out in executor shell;Including flow transfer table, is provided with parallel arrangement and transmission direction opposite automatic feeding line;Manual feeding line, the two ends of automatic feeding line and manual feeding line are connected by carrying line;Welding station, is provided with carousel transmission mechanism;Transfer manipulator, be between flow transfer table and welding station, for feeding to automatic feeding line, and the executor assembly of being assembled to manual feeding line is clamped and transported to welding station and is welded work;Welding station is provided with positioning device, positioning device includes the displacement scale group being arranged above welding station, and the jacking assembly being arranged below welding station, welding station is provided with the fixture plate capable of being driven to lift by jacking assembly, the fixture plate is provided with the positioning column corresponding with displacement scale group on;Fixture plate is lifted under the action of jacking assembly, makes displacement scale group and positioning column contact positioning.

The utility model belongs to the technical field of lithium ion batteries, and discloses a square battery liquid injection hole structure, which comprises a sealing aluminum sheet and a liquid injection hole, the upper part of the liquid injection hole is provided with a sealing aluminum sheet mounting groove matched with the sealing aluminum sheet for sealing, and the lower part of the liquid injection hole is provided with a liquid injection through hole communicated with the sealing aluminum sheet mounting groove; an annular destressing groove located outside the liquid injection through hole is further formed in the lower portion of the liquid injection hole. The annular destressing groove located outside the liquid injection through hole is formed in the lower portion of the liquid injection hole, when the sealing aluminum sheet is welded, the sealing aluminum sheet expands with heat and contracts with cold along with temperature changes, the annular destressing groove can relieve thermal stress generated in the welding process, then the welding yield is improved, and the bad problems of air holes, cracks and the like of the liquid injection hole are avoided.

The invention relates to the field of welding technology, and more specifically to a collimated annular galvanometer laser welding method; the method comprises the following steps: inserting a laser output point light source into a QBH interface of a welding converter, and introducing the point light source into the welding converter; the laser output point light source is converted into a parallel light beam through a collimation module in the welding converter and incident on an X / Y reflective lens of a digital galvanometer; the light is transmitted to a focusing field lens through reflection of the X / Y lens, so as to converge into a point ring light spot on the surface of a material to be welded; the X / Y lens is driven to move, and the focused point ring light spot moves accordingly, so as to complete the welding of the material; the invention has the beneficial effects of: by converting an ordinary point light spot into a point ring laser, welding spatter can be effectively reduced, the welding yield rate can be improved, and a good weld appearance can be obtained, and the cost is relatively low, and the invention can be widely used in the precision welding of lithium battery top covers, shells, battery cells, modules and other types of metal materials.

The utility model discloses detection and cleaning equipment for a lithium battery pole. The detection and cleaning equipment comprises a rack, a portal frame assembly, a pole detection assembly and a pole cleaning assembly, the portal frame assemblies are fixed on the rack, and the pole detection assembly and the pole cleaning assembly are respectively arranged on the portal frame assemblies. Wherein the portal frame assembly comprises a left portal frame unit and a right portal frame unit, and each portal frame unit comprises a portal frame, an X-axis module, a sliding block connecting plate, a Y-axis module fixing plate, a Y-axis module, an X-axis drag chain and a Y-axis drag chain; the portal frame is fixed on the machine frame 1 through a connecting block at the bottom, the X-axis module is fixed on the portal frame, the sliding block connecting plate is connected with the X-axis module, the Y-axis module fixing plate is installed on the sliding block connecting plate, the Y-axis module is installed on the Y-axis module fixing plate, and the X-axis drag chain and the Y-axis drag chain are both connected with the sliding block connecting plate. According to the utility model, the surface of the battery pole can be efficiently and rapidly cleaned, and the welding yield of a power battery is improved.

The utility model discloses a welding structure of a multi-tab roll core and a confluence disc, which is characterized in that the welding structure comprises a roll core and the confluence disc, the two ends of the roll core are provided with multi-tabs and are provided with welding areas which are uniformly distributed along the circumferential direction of the roll core, and the tabs in the welding areas are connected by adopting ultrasonic welding; the confluence disc is provided with a confluence area corresponding to the welding area, and the confluence area corresponds to the welding area and is connected with the welding area in a welding mode. The utility model has the advantages that the hot melting risk of the battery diaphragm can be reduced, the safety of the battery cell is improved, the internal resistance of the battery cell is reduced, and the welding yield of the confluence plate is improved.

The application belongs to the technical field of new energy battery pole friction welding, in particular to a new energy battery pole friction welding device; it comprises: a friction welding machine, which can perform friction welding on copper poles and aluminum poles; a manipulator, the front end of the manipulator is provided with a gripper, and the clamping of the gripper and the manipulator realizes the feeding and discharging of the friction welding machine; the new energy battery pole friction welding device further comprises: a cleaning unit; the front end of the manipulator is provided with a cleaning unit, when welding, the upper surface of the copper pole and the lower surface of the aluminum pole are welded, so the cleaning unit realizes the pre-welding cleaning of the upper surface of the copper pole and the lower surface of the aluminum pole through wiping and blowing and the overturning of the gripper; the welding quality is ensured, and the welding yield of the new energy battery pole is improved.

The utility model relates to the technical field of machine manufacturing, and discloses a ladder manufacturing positioning tool which comprises a supporting frame body and a plurality of connecting pieces, at least one pair of first positioning plates distributed at intervals in the first direction is arranged at the top of the supporting frame body, a first positioning hole is formed in each first positioning plate, and a second positioning hole is formed in each first positioning plate. A plurality of pairs of second positioning plates distributed at intervals in the first direction are arranged on one side of the supporting frame body in the height direction at intervals, each second positioning plate is provided with a second positioning hole, and the first direction is perpendicular to the height direction of the supporting frame body. Every two connecting plates located on different main frames can correspond to at least one pair of first positioning plates or at least one pair of second positioning plates, and the first positioning holes and the second positioning holes are used for assisting in positioning the positions of through holes to be formed in the corresponding connecting plates. Each connecting piece is detachably connected with a through hole formed in the connecting plate and the first positioning hole or the second positioning hole corresponding to the through hole. And the ladder stand manufacturing yield is high, and the universality is good.

The utility model discloses a cylindrical battery, the both ends of the roll core in the shell are equipped with first tab and second tab respectively, the first tab includes a plurality of first tab sections that are arranged at intervals along the circumference, and the second tab includes a plurality of second tab sections that are arranged at intervals along the circumference, the threaded pole of the first current collector disc is insulated through the pole through -hole and is connected with the nut outside the shell, the first current collector disc is equipped with the first through -hole, and the first tab section passes through the first through -hole and is connected with the side of the first current collector disc away from the roll core after bending, the second current collector disc is equipped with the second through -hole, and the second tab section passes through the second through -hole and is connected with the side of the second current collector disc away from the roll core after bending, and the shell open end is closed through the cover plate. Advantageous effects: the utility model passes through the tab and is bent towards the through -hole of the current collector disc and is welded on the side of the current collector disc away from the roll core, makes the welding position of the tab and the current collector disc in the visible state, is favorable to reduce the false welding, the welding -leak phenomenon and so on, improves the welding yield.

The invention discloses a core wire welding device which is provided with a core wire shaping mechanism, a core wire welding dynamic deviation rectifying device, a CCD module and a welding assembly, the core wire shaping mechanism is used for shaping a core wire, and the core wire welding dynamic deviation rectifying device is used for rectifying deviation of the core wire by swinging a cable. The core wire shaping device has the beneficial effects that two corresponding core wires can be separated through positioning of the center positioning piece of the core wire shaping mechanism, and then the core wires are pressed and clamped through the clamping part, so that the core wires can be attached to a bonding pad and return to a welding area of the bonding pad, core wire shaping is achieved, and the core wire welding dynamic deviation correcting device is used for correcting the core wires. The CCD module captures the image of the welding area of the product, so that the offset of the core wire and the bonding pad can be obtained, the shifting fork shifts the core wire cable, the positions of the core wire and the bonding pad are adjusted, the core wire is located in the welding area of the bonding pad, the welding quality is improved, and the welding yield is increased.

The utility model provides a single battery, battery pack and electronic device, this single battery includes casing, electrode assembly, lid and current collection member, the casing includes side wall, and the side wall surrounds to have the opening, electrode assembly installs in the casing, the lid blocks the opening, and is welded fixed with the side wall, current collection member sets up between the lid and electrode assembly, and current collection member and the current collection department of electrode assembly electric connection, wherein, at the side of lid away from electrode assembly, the lid includes thinning area, and the side surface of thinning area away from electrode assembly recess forms first recess, and the welding mark is formed by the welding connection of lid, side wall and current collection member, and the welding mark is located in first recess. The utility model can improve the technical problem of the welding quality of prior art because of the big thickness of lid, reduces the safety and the yield of single battery.

The utility model discloses a laser edge banding machine for an iron frame panel lamp. The laser edge banding machine comprises a conveying rack, a material carrying device located below the conveying rack, a material distributing device, a material pressing device and a laser welding device, wherein the material distributing device, the material pressing device and the laser welding device are located above the conveying rack. The conveying rack is sequentially provided with a feeding position, a welding position and a discharging position. The material separating device is used for separating materials at the feeding position one by one and pushing the materials to the material carrying device; the material carrying device is used for carrying the separated materials from the feeding position to the welding position and carrying the welded materials from the welding position to the discharging position. The material pressing device is located below the laser welding device and used for pressing materials on the welding position. The laser welding device is used for conducting laser welding on the materials on the welding positions. According to the utility model, the welding efficiency and the yield are improved, and the perpendicularity and the welding strength of a product are ensured.

The invention discloses a welding positioning device for an air suspension hoop. The welding positioning device comprises a fixed bottom plate, a sliding mechanism, a first inner mold, a second inner mold, a first inclined pressing mechanism, a second inclined pressing mechanism and a centering mechanism, wherein the first inclined pressing mechanism and the second inclined pressing mechanism are symmetrically arranged; the first inner mold and the second inner mold are fixedly arranged on the fixed bottom plate and the sliding back plate respectively, a gap is reserved between the first inner mold and the second inner mold, and semi-arch-shaped supporting blocks of the first inner mold and the second inner mold are used for supporting hoops. The centering insertion piece can be inserted into the gap for centering, the first inclined pressing mechanism firstly presses the first end of the hoop to be attached to the centering insertion piece, after the centering insertion piece is withdrawn, the second inclined pressing mechanism fixes the second end of the hoop, and the sliding mechanism drives the second inner mold to drive the second end of the hoop to be in accurate butt joint with the first end. According to the welding positioning device for the air suspension hoop, strict alignment of the two free ends of the hoop in the up-down direction and the front-back direction is achieved, the welding yield is greatly increased, and the welding positioning device is suitable for the large-batch low-cost production requirement.

The utility model provides a battery cell liquid injection port laser cleaning dust removal cover which comprises an upper dust removal cover body and a lower dust removal cover body, the upper dust removal cover body is detachably fixed on the lower dust removal cover body, the battery cell liquid injection port laser cleaning dust removal cover further comprises a laser cleaning channel penetrating through the upper dust removal cover body and the lower dust removal cover body from top to bottom, and a lower pipe opening protruding downwards is fixed to the lower end of the laser cleaning channel. A circle of groove formed in the bottom face of the lower dust removal cover body is formed in the circumferential side of the upper end of the lower pipe opening, at least two positive pressure air inlet channels leading to the groove are formed in the lower dust removal cover body, airflow blown into the groove through the positive pressure air inlet channels forms cyclone airflow, and a negative pressure air outlet channel leading to the laser cleaning channel from the side face is further formed in the lower dust removal cover body. The cyclone design that the positive pressure air inlet channels blow air and the negative pressure air outlet channel sucks air is adopted, aluminum powder is blown up, cleaning dead corners are eliminated, and the aluminum powder can be removed more effectively; the original integrated dust removal cover is changed into a split type dust removal cover, and the upper dust removal cover body can be conveniently detached from the lower dust removal cover body, so that the dust removal cover is convenient to detach and clean.

The laser welding positioning assembly comprises a bottom plate, a supporting rod is fixedly connected to the top of one end of the bottom plate, a connecting rod is fixedly connected to the side wall of the top end, close to one end of the bottom plate, of the supporting rod, a lifting electric push rod is arranged at the bottom of one side of the connecting rod, and the output end of the lifting electric push rod faces the bottom. The output end of the lifting electric push rod is fixedly connected with a U-shaped plate. A fixed plate is matched with a clamping plate to clamp a welding workpiece, then a linear motor drives a lifting electric push rod to move and adjust the position, then the lifting electric push rod is started to drive a U-shaped plate to move and adjust the height, and then a stepping motor is started to be matched with a rotating shaft to drive a laser positioner to rotate; therefore, the laser positioner is driven to position welding positions at different angles, the laser welding positioning accuracy is improved, meanwhile, positioning of workpiece welding faces at different angles is improved, and the welding efficiency and the welding yield are improved.

The utility model relates to a welding device and battery welding equipment. The battery welding equipment is in driving connection with the welding device. According to the welding device, the detachable connecting structure is arranged, so that the base body and the welding head are detachably connected, the easily-damaged welding head can be independently replaced, the whole welding device does not need to be replaced, and the maintenance cost is reduced; furthermore, the welding curved surface is arranged at the end part of the welding bulge part, so that on one hand, the contact area between the welding bulge and the welding material needing to be welded is increased, and on the other hand, compared with a plane welding mode, the problem of stress concentration between the corner position and the welding material is greatly avoided by the welding curved surface; therefore, the occurrence rate of mold sticking is greatly reduced, the welding yield is effectively improved, meanwhile, the situation that the service life is affected due to mold sticking is avoided, and the durability of the welding device is improved.

A fixture for fixing and welding a BMS board to a battery cell includes a base with a cavity for holding the BMS board and the battery cell. The cavity has a through hole at its bottom for the battery cell leads to extend out. Two or more first magnets are symmetrically arranged in two rows on the base, located on either side of the cavity. A cover plate is placed on the base to fix the BMS board and battery cell within the cavity; the cover plate has at least one welding hole on its upper part. Two second magnets, the same number as the first magnets but with opposite magnetic properties, are symmetrically arranged in two rows on the lower part of the cover plate, corresponding to the positions of the first magnets, so that when the cover plate is placed on the base, the first and second magnets attract each other. This invention, through the positioning of the cavity, ensures the accuracy of the relative position between the battery cell assembly and the BMS board, and precisely positions the B+, B-, B1, and B2 welding points, greatly improving the welding yield.

The utility model relates to the technical field of display equipment, in particular to an LED backlight structure and a backlight device. The LED backlight structure comprises a substrate and a plurality of wire copper layers arranged on the substrate at intervals, the interval area between every two adjacent wire copper layers is a through window, a first reflecting layer is arranged in each through window, a heightening bonding pad is arranged on each wire copper layer in the length direction, and a second reflecting layer is arranged on each heightening bonding pad. The surfaces, away from the substrate, of the two heightening bonding pads located on the two sides of the through window are further electrically connected with a light-emitting chip. According to the technical scheme, the heightening bonding pad is arranged on the wire copper layer, the vertical space of the through window is enlarged on the premise that the welding yield is not affected, the first reflecting layer with high reflectivity can be conveniently arranged in the through window, therefore, the substrate cannot be exposed, the phenomenon that the substrate absorbs light is avoided, meanwhile, the overall brightness of the lamp panel can be improved through the high reflectivity of the first reflecting layer, and the service life of the lamp panel is prolonged. And the higher the height of the reflecting layer is, the higher the reflectivity is theoretically, so that the backlight module with higher light efficiency is realized.