CN115818151A

CN115818151A - Automatic detection device and detection method for battery cell leakage

Info

Publication number: CN115818151A
Application number: CN202211619555.5A
Authority: CN
Inventors: 李春; 单伟; 谢伟强
Original assignee: Gotion High Tech Co Ltd
Current assignee: Gotion High Tech Co Ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-03-21

Abstract

The invention discloses an automatic detection device and a detection method for battery cell leakage, wherein the device comprises: the circulation assembly is used for circularly circulating the cell tray to be transmitted to each station, and the feeding assembly, the extrusion assembly, the leakage detection assembly and the discharging assembly are sequentially positioned beside the circulation assembly according to the process sequence; the extrusion assembly comprises an extrusion rotating device mainly composed of an extrusion component and an auxiliary rotating component, the extrusion component extrudes the battery cell, and the auxiliary rotating component assists the extrusion component (330) to enable the battery cell after being extruded to be inverted to return after being overturned. By the automatic detection device and method for battery cell leakage, the working efficiency can be improved.

Description

Automatic detection device and detection method for battery cell leakage

Technical Field

The invention relates to the technical field of batteries, in particular to an automatic detection device and a detection method for battery core leakage.

Background

At present, the air pollution is more serious, and the automobile exhaust emission is a big factor, so the development of new energy technology is greatly supported by the nation. The transformation of the fuel-oil automobile to a new energy automobile becomes a necessary trend, so that the core of the new energy automobile, namely a power battery, is rapidly developed. At present, the new energy automobile generally adopts a lithium ion battery as a power battery. As lithium batteries are increasingly used in life and production, the quality problem of lithium batteries is also closely concerned by people.

The minimum electric energy storage unit of the power battery is a battery cell, the battery cell needs to bear certain pressing force in the process of matching and forming a module, if the packaging strength of a liquid injection port of the battery cell and the welding strength of an upper cover do not meet the process requirements, the situation that the battery cell leaks in the matching and forming process or in the subsequent use process can be caused, the battery pack is short-circuited, and great potential safety hazards exist.

The existing solution is that the battery core is taken out manually before being inserted into the wire, and whether the battery core leaks liquid is judged through manual visual inspection after tool extrusion, so that the detection efficiency is low, and misjudgment exists after artificial fatigue, and the normal production requirement of the battery core is difficult to meet.

In the prior art, the patent of the utility model with the patent grant publication number of CN214123980U is named as a square aluminum shell lithium battery inversion extrusion device, which comprises a workbench, a fixed pressing plate, a movable pressing plate, two side pressing plates and a driving mechanism; the fixed pressing plate is vertically and fixedly arranged on the workbench, the two side pressing plates are positioned at the same side of the fixed pressing plate and are oppositely arranged in parallel, one end of each side pressing plate is respectively and vertically connected with two ends of the fixed pressing plate, the movable pressing plate is oppositely arranged in parallel with the fixed pressing plate, and the movable pressing plate is positioned between the two side pressing plates; the driving mechanism is arranged on the workbench and used for driving the movable pressing plate to be close to or far away from the fixed pressing plate, so that the quality judgment means of the sealed battery cell is more sufficient, and the product is safer. However, before the battery is squeezed, the battery needs to be manually transported to a workbench, and after the battery is squeezed, the battery needs to be taken out for manual visual inspection.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the problem of current electric core extrusion weeping scheme all take out before the line is rolled off the production line with electric core by the manual work, then adopt solitary frock to invert the electric core extrusion, unable and the complete automatic cooperation of technology production line of electric core to and adopt solitary frock to invert the electric core extrusion and again judge whether electric core weeping through artifical visual inspection is solved.

In order to solve the technical problems, the invention provides the following technical scheme:

an automatic battery cell leakage detection device comprises: the device comprises a circulation assembly (100) used for circularly circulating a battery cell tray (110) to each station, and a feeding assembly (200), an extrusion assembly (300), a leakage detection assembly (400) and a discharging assembly (500) which are sequentially arranged beside the circulation assembly (100) according to a process sequence; the extrusion assembly (300) comprises an extrusion rotating device mainly composed of an extrusion component (330) and an auxiliary rotating component (340), wherein the extrusion component (330) extrudes the battery cell (800), and the auxiliary rotating component (340) assists the extrusion component (330) to overturn the battery cell (800) after being extruded.

The advantages are that: the extrusion subassembly sets up by the circulation subassembly, through the playback after the extrusion rotary device overturns extruded electric core, make the electric core after the extrusion is fallen return again and just place on the electric core tray, will extrude the electric core circulation of accomplishing to next station through the circulation subassembly, solved electric core extrusion weeping scheme and all taken out before the line is rolled off with electric core by man power, then adopt solitary frock to invert electric core extrusion, unable with the complete technology production line automation complex problem of electric core. The detection of an optical scheme is carried out on the extruded electrolyte leakage condition of the battery core through the leakage detection assembly, so that manual visual detection is avoided. Through material loading subassembly and unloading subassembly, realize the automatic transport of electric core material loading and unloading, avoid artifical transport, improve work efficiency.

In an embodiment of the present invention, the pressing and rotating device further includes a supporting member (320) mainly composed of a fixed plate (321), a lifting plate (322), a pressing sliding plate (325), a pressing fixed plate (326) and a sliding rail slider pair (327); the lifting plate (322) is positioned below the fixed plate (321) and can move up and down relative to the fixed plate (321) under the driving of external force; the extrusion sliding plate (325) and the slide rail slide block pair (327) are positioned at one end of the lifting plate (322), and the extrusion sliding plate (325) can move back and forth on the lifting plate (322) through the slide rail slide block pair (327); the compression fixing plate (326) is fixedly connected with the other end of the lifting plate (322).

In one embodiment of the invention, the pressing component (330) comprises a pushing electric cylinder (331), a pushing block (332), a pressing rotary motor (333) and a moving bearing seat (334); the pushing electric cylinder (331) is fixedly connected with the lifting plate (322); the pushing block (332) is positioned at the output end of the pushing electric cylinder (331), one end of the pushing block is fixedly connected with the extrusion sliding plate (325), and the pushing electric cylinder (331) can enable the extrusion sliding plate (325) to move backwards along the sliding rail sliding block pair (327); the movable bearing seat (334) is connected with the extrusion sliding plate (325) and can drive the extrusion sliding plate (325) to move; and one end of the movable bearing seat (334) is also fixedly connected with the output end of the extrusion rotating motor (333).

In an embodiment of the present invention, the pressing component (330) further includes a flipping cell component (359), the flipping cell component (359) is located between the pressing fixing plate (326) and the movable bearing seat (334), and includes a plurality of rotating plates (335), at least two pairs of polished rods (337), and a plurality of cell clamping plates (338), the plurality of rotating plates (335) are connected to the movable bearing seat (334), when the movable bearing seat (334) rotates, the plurality of rotating plates (335) can be driven to rotate together, and the other end of the movable bearing seat (334) is fixedly connected to the cell clamping plates (338); two ends of the polish rod (337) are respectively fixedly connected with the rotating plate (335); the cell clamping plates (338) are sleeved on the polish rod (337) and can slide on the polish rod (337); when the rotating plates (335) are pushed, the cell clamping plates (338) are pressed, and when the rotating plates (335) are pulled, the pressed cell clamping plates (338) are pulled apart. .

In an embodiment of the present invention, the flip cell component (359) further includes a plurality of fasteners (339) which are mainly composed of a first fastener (3391), a second fastener (3392) and a third fastener (3393) that are sequentially connected end to end; one end of the first buckle (3391) is fixedly connected with the battery cell clamping plate (338) closest to the movable bearing seat (334), the other end of the first buckle is opened upwards to form a concave part (3394), a groove (3396) is formed at the bottom of the concave part (3394), and the groove (3396) is clamped with the battery cell clamping plate (338); one end of the third buckle (3393) is connected with the plurality of rotary plates (335), and the other end of the third buckle is opened downwards to form a convex part (3395); the second catch (3392) has an "S" shape, and has the concave portion (3394) and the convex portion (3395).

In one embodiment of the present invention, the auxiliary rotating member (340) includes an auxiliary rotating cylinder (341) and a rotating shaft (342), the auxiliary rotating cylinder (341) is fixedly connected to one end of the rotating shaft (342), and the other end of the rotating shaft (342) is connected to the plurality of rotating plates (335); the auxiliary rotating cylinder (341) provides auxiliary force for overturning the overturning cell component (359), and a position sensor (362) is further arranged on the auxiliary rotating cylinder (341) and can detect whether the auxiliary rotating cylinder (341) overturns in place.

In an embodiment of the invention, the extrusion rotating device further comprises a reset piece (370) and a lifting component (350) mainly composed of a lifting piece (351) and a lifting cylinder (352), a pair of reset pieces (370) are respectively positioned at two sides of the lifting plate (322), and one end of each reset piece is fixedly connected with the lifting plate (322); the lifting piece (351) is fixedly connected with the lifting plate (322); the lifting cylinder (352) is fixedly connected with the fixing plate (321), and the output end of the lifting cylinder is fixedly connected with the lifting piece (351); the lifting plate (322) can be moved up and down by the lifting member (350).

In an embodiment of the present invention, the cell tray (110) includes a positioning plate (111) and a plurality of cell limiting devices (112), and the plurality of cell limiting devices (112) are fixedly connected to the positioning plate (111); along the two sides of the battery cell tray (110) in the flowing direction, the positioning plate (111) is provided with a notch (1111) and a limit square hole (1113).

In an embodiment of the present invention, each of the cell limiting devices (112) includes:

a pair of side limiting plates (1121) respectively fixed on two sides of the long side of the limiting square hole (1113);

the linear guide pipe (1124) is positioned on one side of the side limiting plates (1121) departing from the limiting square hole and is positioned in the positioning plate (111) to be fixedly connected with the positioning plate;

a guide rod (11252) located within the linear guide tube (1124);

and the bottom plate (1123) is fixedly connected with one end of the guide rod (11252).

In an embodiment of the present invention, each of the cell-limiting devices (112) further includes:

the middle limiting plates (1122) are positioned in the limiting square holes (1113), and one ends of the middle limiting plates are fixedly connected with the bottom plate (1123);

a pair of lower pressing plates (1126) fixedly connected to the guide rods (11252);

and the spring (11251) is sleeved on the guide rod (11252) and is positioned between the lower pressing plate (1126) and the positioning plate (111).

In an embodiment of the invention, the pair of lower pressing plates (1126) are symmetrically positioned at two sides of the pair of side limiting plates (1121), short sides of the pair of lower pressing plates (1126) are arranged in a diagonal manner, and the short sides are deviated from the side limiting plates (1121).

The invention also provides a method for detecting by adopting the automatic battery cell leakage detection device, which comprises the following steps:

the feeding assembly (200) simultaneously clamps a plurality of the battery cells (800) to be placed in the cell tray (110) on the feeding assembly (200);

the battery cell tray (110) drives a plurality of battery cells (800) to flow to the extrusion assembly (300) station through the flow assembly (100);

the extrusion rotating device moves downwards, the extrusion component (330) is positioned in the battery cell tray (110), and the battery cell (800) is extruded;

the extrusion rotating device and the extruded battery core (800) move upwards;

the extrusion component (330) and the auxiliary rotating component (340) turn over and invert the extruded battery core (800) for a certain time;

the pressing member (330) and the auxiliary rotating member (340) turn the battery cell (800) upside down back to positive again;

the extrusion rotation device and the recovered battery core (800) move downwards;

the pressing component (330) puts the cells (800) back into the cell tray (110);

the extrusion rotating device moves upwards;

the battery cell tray (110) drives a plurality of extruded battery cells (800) to flow to a station of the leakage detecting assembly (400) through the flow assembly (100);

the leakage detecting assembly (400) performs online detection on electrolyte leakage conditions of the extruded battery cores (800) through an optical scheme, and transmits the detection results to the blanking assembly (500);

the battery cell tray (110) drives the plurality of detected battery cells (800) to be transferred to the blanking station (500) through the transfer assembly (100);

and the blanking station (500) is used for respectively and independently controlling to clamp each battery cell (800) according to the detection result, and conveying a plurality of battery cells (800) to different subsequent stations.

In an embodiment of the present invention, the pressing and rotating device moves downward, the pressing component is located in the cell tray, and pressing the cell further includes:

the reset piece presses the lower pressing plate, the middle limiting plate moves downwards to enable the two adjacent battery cores to be separated, and the extrusion component is located extrude the battery cores in the gaps in a plurality of ways.

In an embodiment of the present invention, when the pressing rotating device moves upward, the middle position-limiting plate is rebounded and lifted by the spring to be located in the gap again.

In an embodiment of the present invention, the online detection, by the leak detection assembly, of the electrolyte leakage condition of the extruded battery cells through an optical scheme includes: and the optical detection piece identifies the difference value of the optical imaging of the surface of the battery cell in the liquid leakage state and the normal liquid leakage-free state, and judges the liquid leakage condition of the battery cell according to the difference value.

Compared with the prior art, the invention has the beneficial effects that:

1. the battery cell tray mainly plays a role in limiting and preventing toppling in the process of transferring the battery cell at the station. And meanwhile, when the battery cell tray is arranged below the extrusion assembly station, the lifting device pushes down the process, the middle limiting plate moves downwards to be in a pushing state, the left side and the right side of the battery cell still keep limiting at the moment, and the front and the back of the battery cell can move, so that the battery cell extrusion function is realized. For preventing that electric core from vertically extruding the in-process, middle stopper does not push down to target in place and has the pressure to hinder electric core risk, at the extrusion subassembly station, the side of circulation group sets up a plurality of push down sensors in the below of bottom plate, detects the holding down plate and whether presses down to target in place, carries out electric core extrusion action again after guaranteeing that middle limiting plate descends to target in place. When lifting unit drive extrusion part, supplementary rotary part and reset piece rise, then through guide bar and spring, limiting plate resets to the normality in the middle of realizing, realizes spacing to the fore-and-aft direction of electric core again, realizes spacing function and the guard action of electric core in electric core transportation, electric core detection and electric core unloading process that follow.

2. The circulation subassembly adopts double-deck circulation line body, for double-deck circulation speed chain line, realizes the circulation of electric core tray, and the top layer line body drives full load electric core tray and carries out the material circulation, and the electric core tray backward flow function is realized to the lower bottom line body, and it has a plurality of fender to stop the mechanism and a plurality of positioning mechanism that lift to design on the speed chain line body, through a plurality of positioning sensor and station controller, keeps off to electric core tray and stops and fix a position at corresponding station.

3. Through material loading mechanical axis, realize multiaxis motion and flexible transport electric core, through pneumatic controller, it is a plurality of to realize controlling the clamping jaw presss from both sides tightly simultaneously or relaxs electric core. Through the insulating pad that sets up at a plurality of clamping jaws, prevent that electric core contact metal from striking sparks, increase its coefficient of friction with electric core simultaneously, guarantee the clamping-force of clamping jaw and electric core. Realize the automatic material loading of electric core through the material loading subassembly.

4. Drive extrusion part, supplementary rotary part and wait to extrude electric core through the hoisting part and reciprocate, vertically extrude electric core in electric core tray through extrusion part to carry out pressure feedback to extrusion controller through pressure sensor, realize extrusion pressure's control. Extrusion rotating electrical machines and auxiliary rotating part drive extruded electric core and rotate, realize returning extruded electric core upset back again, 180 upsets promptly to carry out position signal feedback through position sensor and realize rotation angle's control. Through first buckle, second buckle and third buckle, guarantee that electric core accuracy puts back to on the position that electric core tray corresponds.

5. The leakage detection assembly is used for detecting leakage by adopting an optical scheme, and the difference value of optical imaging of the surface of the battery cell in the leakage state and the normal leakage-free state is identified, so that the leakage condition of the battery cell is judged, and the automatic detection of the leakage is realized.

6. Through unloading subassembly and leak hunting subassembly communication connection, according to the testing result of leak hunting subassembly, respectively independent control is every the gas circuit break-make of clamping jaw takes away qualified electric core of quality and places and carry to electric core material frame in, then places unqualified electric core in NG subassembly, realizes automatic unloading.

Drawings

Fig. 1 is a schematic diagram of an automatic battery cell leakage detection device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an automatic battery cell leakage detection device at another angle according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a cell tray according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a cell tray at another angle according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a first dual-layer reflow body in accordance with an embodiment of the invention.

FIG. 6 is an enlarged partial view of the park mechanism and lift detent mechanism of an embodiment of the present invention.

Fig. 7 is a schematic view of a feeding assembly according to an embodiment of the invention.

Fig. 8 is a schematic diagram of a cell pressing assembly according to an embodiment of the present invention.

Fig. 9 is a schematic view of a supporting device according to an embodiment of the invention.

FIG. 10 is a schematic view of an exemplary embodiment of an extrusion spin apparatus.

FIG. 11 is a schematic view of another angular extrusion spinning apparatus according to an embodiment of the present invention.

FIG. 12 is an enlarged view of a portion of the first and second catches of an embodiment of the present invention.

Fig. 13 is a partially enlarged view of the second and third snaps in accordance with the embodiment of the present invention.

Fig. 14 is a flowchart of a method for cell compression by using a cell compression assembly according to an embodiment of the present invention.

Fig. 15 is a schematic diagram of an NG assembly according to an embodiment of the invention.

Fig. 16 is a flowchart of a method for detecting by using an automatic battery cell leakage detection apparatus according to an embodiment of the present invention.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Example one

Referring to fig. 1 and 2, the present invention provides an automatic device for detecting a cell leakage, which is used for circularly circulating a circulation assembly 100 for conveying a cell tray 110 to each station, and a feeding assembly 200, an extruding assembly 300, a leakage detecting assembly 400, and a discharging assembly 500, which are sequentially located beside the circulation assembly 100 according to a process sequence. The squeezing assembly 300 comprises a squeezing rotation device composed of a squeezing component 330 and an auxiliary rotation component 340, the squeezing component 330 squeezes the battery cell 800, and the auxiliary rotation component 340 assists the squeezing component 330 to turn over the squeezed battery cell 800 and return to the original position.

Referring to fig. 1 to fig. 3, in an embodiment of the invention, the cell tray 110 includes a positioning plate 111 and a plurality of cell limiting devices 112, and the plurality of cell limiting devices 112 are located in the positioning plate 111 and are fixedly connected to the positioning plate 111. Along the two sides of the battery cell tray 110 in the flowing direction, notches 1111 are disposed on the two sides of the positioning plate 111, and a positioning hole 1112 and a limiting square hole 1113 are further disposed in the positioning plate 111. In this embodiment, the number of the plurality of cell position limiting devices 112 is, for example, three, and the cell position limiting devices include a first cell position limiting device 112A, a second cell position limiting device 112B, and a third cell position limiting device 112C, which are respectively fixed on the positioning plate 111 in sequence. And each cell limiting device 112 comprises a pair of side limiting plates 1121, a plurality of middle limiting plates 1122, a bottom plate 1123, a linear guide tube 1124, a spring rod 1125, and a pair of lower pressing plates 1126. Wherein, a pair of side limiting plate 1121 is fixed respectively and is located the long both sides of spacing square hole 1113, and middle limiting plate 1122 is located a pair of side limiting plate 1121 inboardly, is located spacing square hole 1113 promptly, and the one end and the bottom plate 1123 fixed connection of middle limiting plate 1122, and the distance between two adjacent middle limiting plates 1122 matches the thickness of electric core 800. The linear guide tube 1124 is located at a side of the pair of side limiting plates 1121 away from the limiting square hole 1113, and penetrates through the positioning plate 111 to be fixedly connected therewith. The number of the linear guide tubes 1124 is, for example, 4, and is located at one side of the side stopper 1121 in groups of two. A wear sleeve 11241 is provided at one end of the linear guide tube 1124. Spring lever 1125 includes springs 11251 and guide lever 11252, guide lever 11252 is positioned within spring 11251 with one end fixedly attached to bottom plate 1123 through linear guide tube 1124 and the other end fixedly attached to lower platen 1126, and springs 1151 are positioned between lower platen 1126 and wear sleeve 11241. The lower pressing plates 1126 are L-shaped, the pair of lower pressing plates 1126 are symmetrically located on two outer sides of the side limiting plates 1121, the short sides of the lower pressing plates 1126 are arranged in a diagonal manner, and the short sides of the lower pressing plates 1126 depart from the side limiting plates 1121.

Referring to fig. 1 to 4, in an embodiment of the invention, specifically, a plurality of battery cells 800 are located in a pair of side limiting plates 1121, a distance between the pair of side limiting plates 1121 matches a width of the battery cells 800, the plurality of battery cells 800 are separated by a middle limiting plate 1122, when the pressing assembly 300 moves downward, the resetting piece 700 presses the lower pressing plate 1126, the middle limiting plate 1122 and the bottom plate 1123 move downward to leave a space between the plurality of battery cells 800, the pressing assembly 300 is located in the space to press the plurality of battery cells 800, after pressing, the pressing assembly 300 is lifted again, the resetting piece 700 releases the lower pressing plate 1126, and at this time, under the action of the spring 11251, the middle limiting plate 1122 and the bottom plate 1123 are lifted upward to recover a normal state. After extrusion subassembly 300 promotes, carry out 180 upsets to one side with a plurality of electric cores 800 again, make a plurality of electric cores 800 invert, after carrying out the pressurize for a period, extrusion subassembly 300 is again with a plurality of electric cores 800 at the homonymy, 180 upsets, make a plurality of electric cores 800 return, extrusion subassembly 300 takes a plurality of electric cores 800 to remove downwards at last, piece 700 resets and presses push down plate 1126, place a plurality of electric cores 800 back in side limiting plate 1121 again, through a plurality of buckles, pull open a plurality of electric cores 800, make it be located electric core tray 110 original position, extrusion subassembly 300 upwards promotes once more, make middle limiting plate 1122 and bottom plate 1123 upwards promote, cut off a plurality of electric cores 800. In a normal state of the cell tray 110, as shown in fig. 11 by the first cell limiting device 112A and the third cell limiting device 112C, the cell tray 110 is pressed down, as shown in fig. 4 by the second cell limiting device 112B.

Referring to fig. 1 and 2, in an embodiment of the present invention, the circulation assembly 100 further includes a double-layered return line body 122, the double-layered return line body 122 is fixedly connected to the ground through a ground pin connector, and the cell tray 110 circulates on the double-layered return line body 122. The double-layer streamlined body 122 is divided in a height direction, and includes a top-layer streamlined body 1221 and a bottom-layer streamlined body 1222, and the top-layer streamlined body 1221 is located above the bottom-layer streamlined body 1222. The double-layer streamlined body 122 is divided according to the station of the process flow, and comprises a first double-layer streamlined body 121, a second double-layer streamlined body 122 and a third double-layer streamlined body 123 which are sequentially arranged, wherein the feeding assembly 200 is positioned on one side of the first double-layer streamlined body 121, the extrusion assembly 300 and the leak detection assembly 400 are respectively positioned on two sides of the second double-layer streamlined body 122, and the blanking assembly 500 is positioned on one side of the third double-layer streamlined body 123. The first double-layered streamlined body 121 and the third double-layered streamlined body 123 have the same structure and connection relationship, and for the sake of brevity, the first double-layered streamlined body 121 is taken as an example for description in this embodiment.

Referring to fig. 1, 2 and 5, in an embodiment of the present invention, a first support 1211, a moving plate 1212, a transmission chain 1213, a driving motor 1214 and a hoist 1215 are disposed on the first double-layered streamlined body 121. The moving plate 1212 can slide on the first support 1211 by the lifter 1215, the transmission chain 1213 and the driving motor 1214 are located at an end surface of the moving plate 1212, the driving motor 1214 drives the transmission chain 1213 to drive the cell tray 110 to move right on the top layer streamline 1221, the lifter 1215 is fixedly connected to the other end surface of the moving plate 1212, and the moving plate 1212 drives the moving plate 1212 to move up and down on the first support 1211, so as to drive the empty cell tray 110, from which the cell 800 has been taken away by the blanking assembly 500, to return to the second double-layer reflow line 122 again. The third dual-layer current return body 123 is different from the first dual-layer current return body 121 in that the third dual-layer current return body 123 drives the cell tray 110 to move leftward to the bottom-layer current return body 1222. Specifically, the loading assembly 200 clamps the battery cell 800 from the battery cell frame, places the battery cell on the battery cell tray 110 above the first double-layer current return line 121, moves the battery cell tray 110 loaded with the battery cell 800 to the right on the top layer current return line 1221 through the first double-layer current return line 121, the battery cell tray 110 loaded with the battery cell 800 sequentially passes through the extrusion assembly 300 and the leak detection assembly 400 and is transmitted to the third double-layer current return line 123, the unloading assembly 500 clamps the pressurized and leak-detected battery cell 800 from the battery cell tray 110 on the third double-layer current return line 123, after the unloading assembly 500 takes away the battery cell 800, the elevator of the third double-layer current return line 123 drives the moving plate 1215 1212 to move downward, the empty battery cell tray 110 is moved to the bottom layer current return line of the second double-layer current return line 122, the empty battery cell tray 110 moves to the first double-layer current return line 121 along the bottom layer current return line, and moves upward through the loading machine 1222 of the first double-layer current return line 1222, the loading assembly 200 clamps the battery cell tray 110, and one battery cell tray 110 completes circulation.

Referring to fig. 1, 2, 6 and 7, in an embodiment of the present invention, the circulation assembly 100 further includes a position controller (not shown), and a plurality of stopping mechanisms 130, a plurality of lifting positioning mechanisms 140, a plurality of positioning sensors 150 and a plurality of pressing sensors 160 fixed on the double-layer circulation wire 122 and located below the cell tray 110. The stopping mechanisms 130 and the second double-layer streamlined body 122 are used for separating the stations. The plurality of lifting positioning mechanisms 140 are respectively located at each station of the double-layer backflow body 122, and are configured to accurately position the cell tray 110. The positioning sensors 150 are respectively located on the side edges of the double-layer current return line body 122, and are configured to detect the position of the cell tray 110. A plurality of hold-down sensors 160 are located at the sides of each processing position of the second dual-layer streamlined body 122 for detecting whether the hold-down plate 1126 is pressed in place, and finally moving the middle stopper plate 1122 and the bottom plate 1123 downward to the standard position. The work position controller is communicatively coupled to a plurality of park mechanisms 130, a plurality of lift position mechanisms 140, a plurality of position sensors 150, and a plurality of push down sensors 160. Each of the lifting and positioning mechanisms 140 includes a first lifting plate 141, a second lifting plate 142, an expansion link 143, a positioning member 144, and a lifting cylinder 145, wherein one end of the expansion link 143 is fixedly connected to one side of the first lifting plate 141, the other end of the expansion link 143 is fixedly connected to the second lifting plate 142, the positioning member 144 is fixedly located on the other side of the first lifting plate 141, and one side of the first lifting plate 141 is further fixedly connected to an output end of the lifting cylinder 145.

Referring to fig. 1, 2, 6 and 7, in an embodiment of the present invention, after the positioning sensors 150 detect that the battery cell tray 110 reaches the process position, the station controller controls the stopping mechanism 130 to be lifted, so that the stopping mechanism 130 is engaged with the notch 1111 of the battery cell tray 110, and the battery cell tray 110 is restricted from continuously flowing to the next process position, and the station controller further controls the lifting cylinder 145 to lift the first lifting plate 141 upward, so as to indirectly lift the battery cell tray 110, and the positioning element 144 is located in the positioning hole 1112 of the battery cell tray 110. After the process task is completed, the station controller controls the stopping mechanism 130 to descend and the lifting cylinder 145 to contract to descend the first lifting plate 141, so that the positioning member 144 exits from the positioning hole 1112, and the battery cell tray 110 is moved to the next process position.

Referring to fig. 1, 2 and 7, in an embodiment of the present invention, the feeding assembly 200 includes a feeding clamping jaw assembly 210 including a pneumatic device 211, a plurality of clamping jaws 212, and a pneumatic controller 213, where the plurality of clamping jaws 212 are connected to an output end of the pneumatic device 211, and the pneumatic controller 213 is connected to the pneumatic device 211 in a communication manner to control on/off of an air path of the pneumatic device 211, so as to control the plurality of clamping jaws 212 to clamp or release the battery cell simultaneously.

Referring to fig. 1, 2 and 7, in an embodiment of the present invention, the feeding assembly 200 further includes a feeding mechanical shaft 220 composed of a first feeding mechanical shaft 221, a second feeding mechanical shaft 222 and a third feeding mechanical shaft 223. One end of the first feeding mechanical shaft 221 is fixedly connected with the ground, and one end of the second feeding mechanical shaft 222 is movably connected with the other end of the first feeding mechanical shaft 221, so that the second feeding mechanical shaft 222 can rotate around the first feeding mechanical shaft 221. One end of the third feeding mechanical shaft 223 is movably connected with the other end of the second feeding mechanical shaft 222, and the other end is movably connected with the pneumatic device 211, so that the third feeding mechanical shaft 223 can rotate around the second feeding mechanical shaft 222, and the pneumatic device 211 can rotate around the third feeding mechanical shaft 223. The feeding clamping jaw assembly 210 further comprises a telescopic member 214, the telescopic member 214 is connected with the output end of the pneumatic device 211 and is positioned on the plurality of clamping jaws 212, and the telescopic member 214 is further in control connection with the pneumatic controller 213. The telescopic member 214 moves the plurality of gripping jaws 212 up and down at the output end of the pneumatic device 211 according to the control command of the pneumatic controller 213 without affecting the rotation of the plurality of gripping jaws 212 at the pneumatic device 211. The insulating pads 2121 are further arranged on the clamping jaws 212, so that the battery cell 800 is prevented from being struck by contact metal, the friction coefficient between the clamping jaws and the battery cell 800 is increased, the clamping force between the clamping jaws 212 and the battery cell 800 is ensured, and the flexible carrying of the battery cell 800 is realized through the feeding mechanical shaft 220.

Referring to fig. 1, 2 and 7, in an embodiment of the present invention, the plurality of clamping jaws 212 are moved to a position above the cell frame on one side of the first double-layer current return line 121 by the feeding mechanical shaft 220, the pneumatic controller 213 controls the plurality of clamping jaws 212 to open, the plurality of clamping jaws 212 are moved downward into the cell frame by the expansion member 214, the pneumatic controller 213 controls the plurality of clamping jaws 212 to simultaneously clamp the cell 800, the expansion member 214 moves the plurality of clamping jaws 212 upward, the feeding mechanical shaft 220 drives the feeding assembly 200 to move to a position right above the cell tray 110 above the first double-layer current return line 121, the plurality of clamping jaws 212 are moved downward by the expansion member 214 to place the cell 800 in the cell limiting device 112, the pneumatic controller 213 controls the plurality of clamping jaws 212 to simultaneously loosen the cell 800, the expansion member 214 moves the plurality of clamping jaws 212 upward, and the feeding mechanical shaft 220 moves the plurality of clamping jaws 212 to a position above the cell frame on one side of the first double-layer current return line 121, so as to circulate.

Referring to fig. 8, in an embodiment of the invention, the pressing assembly 300 includes a pressing and rotating device disposed on the supporting device 310, and the pressing and rotating device can rotate the battery cell 800 to the lower side of the pressing and rotating device, and then return to the original position.

Referring to fig. 9, in an embodiment of the present invention, the supporting device 310 includes a supporting leg 311 and a connecting beam 312, wherein one end of the supporting leg 311 is fixedly connected to the ground through an expansion bolt, and the other end is fixedly connected to the connecting beam 312.

Referring to fig. 10, in an embodiment of the present invention, the pressing and rotating device includes a supporting member 320, a pressing member, an auxiliary rotating member 340, a lifting member 350, a detecting device 360, and a resetting member 370, and the pressing and rotating device is matched with each other to enable the cell to return to an original position after being pressed and rotated.

Referring to fig. 10 and 11, in an embodiment of the present invention, the supporting member 320 includes a fixing plate 321, a lifting plate 322, a plurality of linear bearings 323, and a lifting limiting plate 324. The fixing plate 321 is fixedly connected to the connecting beam 312, and a lifting member 350 is further fixedly disposed on a top surface of the fixing plate 321. One ends of the linear bearings 323 are fixedly connected to the lifting plate 324 through the four corners of the fixing plate 321, the other ends of the linear bearings 323 are fixedly connected to one side of the lifting plate 322, the lifting member 350 is also fixedly connected to one side of the lifting plate 322, and the lifting member 350 provides power to lift and lower the lifting plate 322. The support member 320 further includes a pressing slide plate 325, a pressing fixed plate 326, and a slide rail pair 327, wherein one side of the slide rail pair 327 is fixed to one end of the other side of the lifting plate 322, and the other side of the slide rail pair is fixedly connected to the pressing slide plate 325, so that the pressing slide plate 325 can slide on the lifting plate 322. The compression fixing plate 326 is fixed at the other end of the other side surface of the lifting plate 322 by bolts.

Referring to fig. 10 and 11, in an embodiment of the present invention, the pressing unit includes an electric pushing cylinder 331 and a pushing block 332, and the electric pushing cylinder 331 is fixedly connected to one side of the lifting plate 322. Wherein, a first through hole 3221 is further disposed on the lifting plate 322, and the through hole 3221 is located on the same side of the lifting plate 322 as the pressing sliding plate 325 and between two adjacent sliding rail and sliding block pairs 327. The pushing block 332 is located at one side of the output end of the pushing electric cylinder 331, is located at the first through hole 3221, and has one end fixedly connected to the extrusion sliding plate 325, and pushes the pushing block 332 when the output end of the pushing electric cylinder 331 extends out, so that the extrusion sliding plate 325 moves backward through the sliding rail and sliding block pair 327.

Referring to fig. 10 and 11, in an embodiment of the invention, the pressing component 330 further includes a pressing rotating motor 333, a moving bearing seat 334, and a turning cell component 359. The extrusion sliding plate 325 is provided with a second through hole 3251, and a copper bush is embedded in the second through hole 3251. The movable bearing seat 334 is located in the second through hole 3251 and connected to the extrusion sliding plate 325, a rotary telescopic rod 3341 is arranged in the movable bearing seat 334, one end of the rotary telescopic rod 3341 is fixedly connected to the extrusion rotating motor 333 through a coupler, the other end of the rotary telescopic rod 3341 is fixedly connected to the turnover cell component 359, when the extrusion rotating motor 333 works, the extrusion sliding plate 325 can be driven to move forwards or backwards through the movable bearing seat 334, and the turnover cell component 359 can extrude a cell or restore the extruded cell to the original position through the rotary telescopic rod 3341.

Referring to fig. 10 and fig. 11, in an embodiment of the invention, a flip-chip cell component 359 is located between the pressing fixing plate 326 and the sliding rail-slider pair 327. The flip cell component 359 includes a plurality of rotating plates 335, a plurality of stub shafts 336, at least two pairs of polish rods 337, a plurality of cell clamping plates 338, and a plurality of snaps 339. The polish rod 337 passes through the plurality of cell clamping plates 338, so that the plurality of cell clamping plates 338 can slide on the polish rod 337, and the plurality of buckles 339 are fixedly connected with the plurality of cell clamping plates 338, so that after the cell clamping plates 338 finish extruding the cell, the cell clamping plates 338 are pulled apart. Specifically, the plurality of rotating plates 335 include a first rotating plate 3351, a second rotating plate 3352, and a third rotating plate 3353, wherein the first rotating plate 3351 is positioned at a side near the pressing sliding plate 325, and the second rotating plate 3352 and the third rotating plate 3353 are positioned at a side near the pressing fixing plate 326. The first rotating plate 3351 is connected to the movable bearing seat 334, and when the movable bearing seat 334 rotates, the first rotating plate 3351 is driven to rotate together. The second rotating plate 3352 and the third rotating plate 3353 are connected by a plurality of short shafts 336, the short shafts 336 are respectively positioned at the four corners of the third rotating plate 3353, one end of the short shafts 336 is fixedly connected with the third rotating plate 3353, and the second rotating plate 3352 is sleeved at the other end of the short shafts 336. When the second rotating plate 3352 receives a pushing force, the second rotating plate 3352 moves closer to the third rotating plate 3353 through the short shaft 336, and when the second rotating plate 3352 receives a pulling force, the second rotating plate 3353 moves away from the third rotating plate 3353. Two ends of at least two pairs of polished rods 337 are respectively fixedly connected with the first rotating plate 3351 and the second rotating plate 3352, and the

polished rods

3371 and 3372 have a certain horizontal height therebetween.

Referring to fig. 10 to 14, in an embodiment of the invention, two side edges of the cell clamping plate 338 are provided with convex lugs 3381, and specifically, the cell clamping plate 338 is in a cross shape. The first polish rod 3371 passes through the convex lug 3381 so that the cell clamping plates 338 can slide on the first polish rod 3371, and the tops of the cell clamping plates 338 are located between the second polish rods 3371, and when the cell clamping plates 338 are reversed, the cell clamping plates 338 are reversed together through the second polish rods 3371. The other end of the rotating telescopic rod 3341 is fixedly connected to the cell clamping plate 338 closest to the rotating telescopic rod 3341, and in a normal state, the cell clamping plates 338 are in an opened state. The plurality of buckles 339 include a first buckle 3391, a second buckle 3392 and a third buckle 3393 which are sequentially connected end to end, wherein one end of the first buckle 3391 is fixedly connected with the battery cell clamping plate 338 closest to the rotating telescopic rod 3341, the other end of the first buckle 3391 is open and upward to form a concave portion 3394, a groove 3396 is arranged at the bottom of the concave portion 3394, and the groove 3396 is used for clamping the lug 3381. One end of the third latch 3393 is fixedly connected to the second rotating plate 3352, and the other end is open downward to form a protrusion 3395. The second buckle 3392 is arranged in an "S" shape, and has a concave part 3394 and a convex part 3395, and a plurality of second buckles 3392 are connected end to end, and when one second buckle 3392 is connected end to end, it is respectively located in the concave part 3394 and the convex part 3395 of the second buckles 3392 on two adjacent sides, so that it can follow a plurality of battery cell clamping plates 338 and be extruded, and move forward, and when a plurality of battery cell clamping plates 338 are pulled apart, move backward. The design rules of the first width b1 of the concave portion 3394 and the second width b2 of the convex portion 3395 are: when a plurality of electricity core splint 338 are pulled open, adjacent two second buckle 3392 restriction of contacting each other, the distance between the spacing board equals between the distance that makes between two adjacent electricity core splint 338 and two adjacent, when a plurality of electricity core splint 338 are extrudeed, every second buckle 3392 removes the distance in concave part 3394 and convex part 3395, is greater than the removal distance of every electricity core splint 338, guarantees when extrudeing electric core 800, adjacent two second buckle 3392 mutual contactless.

Referring to fig. 10, in an embodiment of the present invention, the auxiliary rotating member 340 includes an auxiliary rotating cylinder 341 and a rotating shaft 342. The auxiliary rotating cylinder 341 is fixedly connected to the pressing fixing plate 326, and an output end thereof is fixedly connected to one end of the rotating shaft 342 via a coupling, and the other end of the rotating shaft 342 is fixedly connected to the third rotating plate 3353. The cell overturning component 359 is turned over by the extruded cell and then aligned again by the auxiliary power supplied by the auxiliary rotating cylinder 341 and the extruding rotating motor 333.

Referring to fig. 10, in an embodiment of the present invention, the lifting member 350 includes a lifting member 351, a lifting cylinder 352, a limiting member 353 and a buffer 354. One end of the lifting member 351 is fixedly connected to one side of the lifting plate 322, the lifting cylinder 352 is fixedly disposed on the fixing plate 321, and an output shaft of the lifting cylinder 352 passes through the fixing plate 321 and is fixedly connected to the other end of the lifting member 351. The limiting member 353 is fixedly disposed in the fixing plate 321. When the lifting cylinder 352 drives the lifting member 351 to ascend, the lifting plate 322 and the components fixed to the lifting plate 322 are lifted together, and when the bottom of the limiting member 353 contacts the lifting plate 322, the lifting cylinder 352 stops continuing to ascend. When the lifting cylinder 352 pushes the lifting member 351 to descend, the lifting plate 322 and the components fixed to the lifting plate 322 are driven to descend together, and when the top of the limiting member 353 contacts the limiting plate 324, the lifting cylinder 352 stops continuously pushing the lifting member 351. The damper 354 is positioned on one side of the lift cylinder 352 and is fixedly coupled to the fixed plate 321.

Referring to fig. 10, in an embodiment of the invention, the detecting device 360 includes a pressure sensor 361 and a position sensor 362, wherein the pressure sensor 361 is located between the second rotating plate 3352 and the third rotating plate 3353, and is fixedly connected to the second rotating plate 3352 for detecting the pressure of the pressed cell. The position sensor 362 and the auxiliary rotary cylinder 341 are connected in communication with the position sensor 362 and the auxiliary rotary cylinder 341, and the position sensor 362 is used to detect whether the auxiliary rotary cylinder 341 is rotated in place.

Referring to fig. 8, 10 and 11, in an embodiment of the present invention, a pair of restoring elements 370 are respectively located at two sides of the fixing plate 321, and one end of the restoring elements is fixedly connected to the fixing plate 321. When the battery cell tray 110 is conveyed to the station of the pressing assembly 300, the pair of resetting pieces 370 are located right above the lower pressing plate 1126, when the lifting cylinder 352 pushes the lifting piece 351 to descend, the pair of resetting pieces 370 press the lower pressing plate 1126, the middle limiting plate 1122 moves downwards to leave an empty space, and the plurality of battery cell clamping plates 338 are located in the empty space so as to press the battery cells 800. The pressing assembly further comprises a pressing controller (not shown in the figure), which is in communication connection with the pushing electric cylinder 331, the pressing rotating motor 333, the auxiliary rotating cylinder 341, the lifting air cylinder 352 and the detection device 360, and controls the pressing member 330, the auxiliary rotating member 340 and the lifting member 350 to complete the pressing of the battery cell 800.

Referring to fig. 8 to 13, in an embodiment of the invention, when the battery cells 800 move to the station of the pressing assembly 300, the lifting cylinder 352 pushes the lifting member 351 to move the lifting plate 322 downward, the reset member 370 presses the battery cell tray to enable the plurality of battery cell clamping plates 338 to be respectively located in two adjacent battery cells 800, the pressing rotating motor 333 is started to rotate the rotating telescopic rod 3341 together through the coupling, the pressing sliding plate 325 moves forward along the sliding rail and slider pair 327 through the moving of the bearing seat 334 to enable the first rotating plate 3351 to be pressed toward the second rotating plate 3352, and the pressure sensor 361 detects the pressure at this time. Meanwhile, the battery cell clamping plates 338 are moved forward under the rotation of the rotating telescopic rod 3341, so that the battery cells 800 are extruded by the battery cell clamping plates 338. The lifting cylinder 352 drives the lifting piece 351 to enable the lifting plate 322 to move upwards, when the lifting plate rises to a certain height, the auxiliary rotating cylinder 341 is started, the rotating shaft 342 drives the overturning electric core component 359 to rotate together, the rotating direction is the same as that of the extrusion rotating motor 333, the electric core 800 is inverted for a first period of time, the pressure maintaining of the electric core 800 is carried out, if an electric core welding line is unqualified, when the electric core 800 is inverted, electrolyte can flow out from the electric core welding line, and the next process detection is convenient. After the voltage of the battery cell 800 is maintained, the extrusion rotating motor 333 rotates reversely, the auxiliary rotating cylinder 341 simultaneously keeps the same rotation direction as that of the extrusion rotating motor 333, so that the inverted battery cell 800 is rotated again, and the auxiliary rotating cylinder 341 is turned off. The lifting cylinder 352 pushes the lifting piece 351 to enable the lifting plate 322 to move downwards, and the resetting piece 370 presses the battery cell tray to place the battery cell 800 in the battery cell tray. Start simultaneously and promote electric jar 331, promote the output of electric jar 331 and promote piece 332, make extrusion sliding plate 325 slide backward, extrude the reversal of rotating electrical machines 333 simultaneously, also make extrusion sliding plate 325 slide backward, through buckle 339, make a plurality of electric core splint 338 pulled open, drive a plurality of electric cores 800 and be located electric core tray original position. Close promotion electric cylinder 331 and extrusion rotating electrical machines 333, lift cylinder 352 drives lifting member 351 and makes lifting plate 322 rebound, and at this moment, the extruded electric core 800 will be accomplished to the electric core tray, transmits to next station through the circulation.

Referring to fig. 3, and fig. 8 to 13, in an embodiment of the present invention, three cell limiting devices 112 are disposed on the cell tray 110, and correspondingly, three groups of squeezing rotating devices are sequentially disposed on the supporting device 310, and are respectively used for squeezing, inverting, and resetting the cells 800 in the three cell limiting devices 112.

Referring to fig. 14, the present invention further provides a method for extruding a battery cell by using a battery cell extruding assembly, which includes an extruding rotation device for extruding the battery cell flowing to a lower portion of the extruding rotation device, a lifting step, a rotating inversion step, a pressure maintaining step, a rotating return step, a descending step, and a resetting step, so that the battery cell is restored to an original position after the extruding rotation is completed. Specifically, the method comprises the following steps:

s1000, when the battery cell flows to the station of the battery cell extrusion assembly, the lifting cylinder pushes the lifting plate to move downwards, and the battery cell clamping plates are located in the battery cell tray.

S2000, starting the extrusion rotating motor to drive the rotating telescopic rod to rotate together, and driving the extrusion sliding plate to move forwards along the sliding rail and sliding block pair by rotating the movable bearing seat so as to extrude the first rotating plate towards the second rotating plate; meanwhile, the rotating telescopic rod pushes the plurality of battery cell clamping plates to extrude the battery cells in the battery cell tray;

s3000, the lifting cylinder drives the lifting plate to move upwards, and when the lifting plate rises to a certain height, the extrusion rotating motor and the auxiliary rotating component drive the overturning cell component to overturn, so that the cell is inverted and the pressure is maintained for a certain time;

s4000, after the voltage of the battery cell is maintained, the overturned battery cell component is aligned again through the extrusion rotating motor and the auxiliary rotating component;

s5000, the auxiliary rotating part is closed, the lifting cylinder pushes the lifting plate to move downwards, and the battery cell is placed in the battery cell tray;

s6000, starting a pushing electric cylinder, pushing a pushing block to move backwards, enabling the extrusion sliding plate to move backwards through the movable bearing seat, and enabling the battery cell clamping plates to be longitudinally pulled open in the battery cell tray through a plurality of buckles;

s7000, close promote the electric jar with extrusion rotating electrical machines, promote the air cylinder drive the lifting plate rebound, the extrusion is accomplished the electric core is located in the electric core tray to the circulation is to next station.

Referring to fig. 1 and fig. 2, in an embodiment provided by the present invention, the leak detection assembly 400 includes a fixing rod 410 and an optical detection element 420, the fixing rod 410 is fixed at two sides of the circulation assembly 100, the optical detection element 420 is located above the circulation assembly 100 and is fixedly connected to the fixing rod 410, an optical scheme is adopted for performing online detection on electrolyte leakage conditions at a weld joint and a liquid injection port of the battery cell 800 after extrusion is completed, and a difference value of optical imaging of the surface of the battery cell 800 in a leakage state and a normal leakage-free state is identified, so as to determine the electrolyte leakage condition of the battery cell 800, and implement automatic detection of electrolyte leakage. Specifically, the optical detection element 420 is a 2.5D camera, and the detection principle is as follows: shadow images generated by concave-convex information of the images are obtained by controlling the light sources to illuminate from different angles, and finally the images of the 3D information are obtained through synthesis and calculation. The leak detection assembly 400 further includes an information terminal (not shown), which is in communication connection with the optical detection member 420, receives detection information of the optical detection member 420, and determines whether the plurality of battery cells 800 meet the quality requirement.

Referring to fig. 1 and 2, in an embodiment of the present invention, the apparatus for automatically detecting a cell leakage includes an NG component 600 and a safety protection component 700, where the NG component 600 is located at one side of the blanking component 500, and the safety protection component 700 is, for example, a protective net, and surrounds the circulation component 100, the feeding component 200, the pressing component 300, the leakage detection component 400, the blanking component 500, and the NG component 600, so as to ensure safety of workers. Safety shield assembly 700 is also, for example, a combination of a protective mesh and one or more of a safety door lock, an emergency stop switch, and a safety door lock.

Referring to fig. 1 and 2, in an embodiment of the present invention, the blanking assembly 500 and the loading assembly 200 may be regarded as a same set of equipment, and the difference is that the pneumatic controller 213 of the blanking assembly 500 individually controls the on/off of the air paths of the plurality of clamping jaws 212. The pneumatic controller 213 of the blanking assembly 500 is in communication connection with the information terminal, obtains the judgment result of the information terminal for detecting the battery cell 800, takes the battery cell 800 with qualified quality away, places the battery cell 800 in the battery cell material frame, and places the unqualified battery cell in the NG assembly 600.

Referring to fig. 1 and fig. 15, in an embodiment of the present invention, the NG assembly 600 includes an NG support 610, a cell limiting device 620, and a full charge sensor 630, the NG support 610 is fixedly connected to the ground, and the cell limiting device 620 is fixedly connected to the NG support 610 for placing the determined unqualified cell 800. Full material sensor 630 has NG supporting seat 610 fixed connection for whether detect electric core stop device 620 is in full material state, when electric core stop device 620 is in full material state, full material sensor 630 triggers alarm signal and reminds the staff to handle these unqualified electric cores 800.

Referring to fig. 16, in another embodiment, the present invention provides a method for detecting a leakage of a battery cell by using an automatic detection apparatus for battery cell leakage, including the following steps:

s100, the feeding assembly simultaneously clamps a plurality of battery cells to be placed in a battery cell tray on the feeding assembly;

s110, the cell tray drives the plurality of cells to flow to the extrusion assembly station through the flow assembly;

s200, the extrusion rotating device moves downwards, the extrusion component is located in the battery cell tray, and the battery cell is extruded;

s210, the extrusion rotating device and the extruded battery cell move upwards;

s220, the extruded battery cell is turned upside down by the extruding component and the auxiliary rotating component and is turned upside down for a certain time;

s230, the pressing component and the auxiliary rotating component turn the inverted battery cell back to the positive state again;

s240, the extrusion rotating device and the battery cell which is aligned back move downwards;

s250, the pressing component puts the battery cell which is aligned back into the battery cell tray;

s260, moving the extrusion rotating device upwards;

s300, the cell tray drives the extruded cells to flow to the station of the leakage detecting assembly through the flow assembly;

s310, the leakage detecting assembly performs online detection on electrolyte leakage conditions of the extruded battery cores through an optical scheme, and transmits detection results to the blanking assembly;

s400, the battery cell tray drives the plurality of detected battery cells to flow to the blanking station through the flow assembly;

and S500, the blanking station respectively controls and clamps each battery cell independently according to the detection result, and carries the battery cells to different subsequent stations.

Referring to fig. 16, in another embodiment of the present invention, in step S200, the pressing rotating device moves downward, the pressing component is located in the cell tray to press the cell, and the method further includes:

reset 370 and press push down plate 1126, middle limiting plate 1122 moves down, leaves the interval between two adjacent electric cores 800, and extrusion part 330 is located it is a plurality of to extrude in the interval electric core 800.

Referring to fig. 16, in another embodiment of the present invention, in step S260, when the pressing rotation device moves upward, the middle limit plate 1122 is rebounded and ascends by the spring 11251 and is located in the gap again.

Referring to fig. 16, in another embodiment of the present invention, in step S310, the online detection of electrolyte leakage from the extruded battery cells by the leak detection assembly 400 through an optical scheme includes: the optical detection component 420 identifies a difference value between the optical imaging state of the surface of the battery cell 800 in the liquid leakage state and the optical imaging state in the normal liquid leakage-free state, and determines the liquid leakage condition of the battery cell 800 according to the difference value.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not to be construed as limiting the claims.

Claims

1. The utility model provides an electricity core weeping automatic checkout device which characterized in that includes: the circulation assembly (100) is used for circularly circulating the cell trays (110) to be transmitted to each station, and the feeding assembly (200), the extruding assembly (300), the leakage detecting assembly (400) and the discharging assembly (500) are sequentially arranged beside the circulation assembly (100) according to the process sequence; the extrusion assembly (300) comprises an extrusion rotating device mainly composed of an extrusion component (330) and an auxiliary rotating component (340), wherein the extrusion component (330) extrudes the battery cell (800), and the auxiliary rotating component (340) assists the extrusion component (330) to overturn the battery cell (800) after being extruded.

2. The automatic detection device for the cell leakage according to claim 1, wherein the extrusion rotation device further comprises a support member (320) mainly composed of a fixed plate (321), a lifting plate (322), an extrusion sliding plate (325), an extrusion fixed plate (326) and a slide rail slider pair (327); the lifting plate (322) is positioned below the fixed plate (321) and can move up and down relative to the fixed plate (321) under the driving of external force; the extrusion sliding plate (325) and the sliding rail slide block pair (327) are positioned at one end of the lifting plate (322), and the extrusion sliding plate (325) can move back and forth on the lifting plate (322) through the sliding rail slide block pair (327); the compression fixing plate (326) is fixedly connected with the other end of the lifting plate (322).

3. The automatic battery cell leakage detection device according to claim 2, wherein the pressing component (330) comprises a pushing electric cylinder (331), a pushing block (332), a pressing rotary motor (333) and a moving bearing seat (334); the pushing electric cylinder (331) is fixedly connected with the lifting plate (322); the pushing block (332) is positioned at the output end of the pushing electric cylinder (331), one end of the pushing block is fixedly connected with the extrusion sliding plate (325), and the pushing electric cylinder (331) can enable the extrusion sliding plate (325) to move backwards along the sliding rail and sliding block pair (327); the movable bearing seat (334) is connected with the extrusion sliding plate (325) and can drive the extrusion sliding plate (325) to move; and one end of the movable bearing seat (334) is also fixedly connected with the output end of the extrusion rotating motor (333).

4. The automatic detection device for the cell leakage of claim 3, wherein the pressing component (330) further comprises a flipping cell component (359), the flipping cell component (359) is located between the pressing and fixing plate (326) and the movable bearing seat (334), and comprises a plurality of rotating plates (335), at least two pairs of polished rods (337), and a plurality of cell clamping plates (338), the plurality of rotating plates (335) are connected with the movable bearing seat (334), when the movable bearing seat (334) rotates, the plurality of rotating plates (335) can be driven to rotate together, and the other end of the movable bearing seat (334) is fixedly connected with the cell clamping plates (338); two ends of the polish rod (337) are respectively fixedly connected with the rotating plate (335); the cell clamping plates (338) are sleeved on the polish rod (337) and can slide on the polish rod (337); when the plurality of rotating plates (335) are subjected to pushing force, the plurality of cell clamping plates (338) are squeezed, and when the plurality of rotating plates (335) are subjected to pulling force, the squeezed plurality of cell clamping plates (338) are pulled apart.

5. The automatic battery cell leakage detection device according to claim 4, wherein the overturning battery cell component (359) further comprises a plurality of buckles (339) which are mainly composed of a first buckle (3391), a second buckle (3392) and a third buckle (3393) which are sequentially connected end to end; one end of the first buckle (3391) is fixedly connected with the battery cell clamping plate (338) closest to the movable bearing seat (334), the other end of the first buckle is opened upwards to form a concave part (3394), a groove (3396) is arranged at the bottom of the concave part (3394), and the groove (3396) is clamped with the battery cell clamping plate (338); one end of the third buckle (3393) is connected with the plurality of rotary plates (335), and the other end of the third buckle is opened downwards to form a convex part (3395); the second catch (3392) has an "S" shape, and has the concave portion (3394) and the convex portion (3395).

6. The automatic detection device for the battery cell leakage according to claim 5, wherein the auxiliary rotating component (340) comprises an auxiliary rotating cylinder (341) and a rotating shaft (342), the auxiliary rotating cylinder (341) is fixedly connected with one end of the rotating shaft (342), and the other end of the rotating shaft (342) is connected with the plurality of rotating plates (335); the auxiliary rotating cylinder (341) provides auxiliary force for overturning the overturning cell component (359), and a position sensor (362) is further arranged on the auxiliary rotating cylinder (341) and can detect whether the auxiliary rotating cylinder (341) overturns in place.

7. The device for automatically detecting cell leakage according to any one of claims 1 to 6, wherein the squeezing and rotating device further comprises a resetting member (370) and a lifting member (350) mainly composed of a lifting member (351) and a lifting cylinder (352), a pair of the resetting members (370) are respectively located at two sides of the lifting plate (322), and one end of each resetting member is fixedly connected with the lifting plate (322); the lifting piece (351) is fixedly connected with the lifting plate (322); the lifting cylinder (352) is fixedly connected with the fixing plate (321), and the output end of the lifting cylinder is fixedly connected with the lifting piece (351); the lifting plate (322) can be moved up and down by the lifting member (350).

8. The automatic detection device for the battery cell leakage according to claim 1, wherein the battery cell tray (110) comprises a positioning plate (111) and a plurality of battery cell limiting devices (112), and the plurality of battery cell limiting devices (112) are fixedly connected with the positioning plate (111); along the two sides of the battery cell tray (110) in the flowing direction, the positioning plate (111) is provided with a notch (1111) and a limit square hole (1113).

9. The automatic battery cell leakage detection device according to claim 8, wherein each battery cell limiting device (112) comprises:

a guide rod (11252) located within the linear guide tube (1124);

10. The automatic battery cell leakage detection device of claim 9, wherein each battery cell limiting device (112) further comprises:

a pair of lower pressing plates (1126) fixedly connected with the guide rods (11252);

11. The automatic battery core leakage detection device according to claim 10, wherein the pair of lower pressure plates (1126) are symmetrically located at two sides of the pair of side limiting plates (1121), short sides of the pair of lower pressure plates (1126) are arranged in a diagonal manner, and the short sides are away from the side limiting plates (1121).

12. A method for detecting by using the automatic battery cell leakage detection device according to any one of claims 1 to 11, comprising the following steps:

the loading assembly (200) simultaneously clamps a plurality of the battery cells (800) to be placed in the battery cell tray (110) on the loading assembly (200);

the squeezing and rotating device moves downwards, the squeezing component (330) is positioned in the cell tray (110), and the cells (800) are squeezed;

the extrusion rotating device and the extruded battery core (800) move upwards;

the extrusion rotating device and the battery core (800) which is aligned back are moved downwards;

the extrusion rotating device moves upwards;

the battery cell tray (110) drives a plurality of extruded battery cells (800) to flow to the station of the leak detection assembly (400) through the flow assembly (100);