A kind of battery core leakage automatic detection device and detection method

Abstract

The present invention discloses an automatic detection device and method for battery cell leakage, the device comprising: a circulation assembly for circulating battery cell trays to be transmitted to each workstation, and a loading assembly, an extrusion assembly, a leakage detection assembly and a unloading assembly which are sequentially located beside the circulation assembly in accordance with 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 flip the extruded inverted battery cell and return it to its original position. The automatic detection device and method for battery cell leakage disclosed by the present invention can improve work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to an automatic detection device and method for battery cell leakage. Background Art

[0002] At present, new energy vehicles generally use lithium-ion batteries as power batteries. As lithium batteries are increasingly used in life and production, the quality of lithium batteries has also attracted close attention.

[0003] The smallest energy storage unit of a power battery is a battery cell. The battery cell needs to withstand a certain amount of compression force during the process of assembling it into a module. If the packaging strength of the battery cell's filling port and the welding strength of the upper cover do not meet the process requirements, the battery cell will leak during the assembly process or in subsequent use, causing the battery pack to short-circuit, posing a major safety hazard.

[0004] The existing solution is to manually remove the battery cells before they come off the production line, use tooling to squeeze them, and then conduct manual visual inspection to determine whether the battery cells are leaking. The detection efficiency is low, and there is a risk of misjudgment due to manual fatigue, making it difficult to meet the normal production needs of the battery cells.

[0005] Prior art, the utility model patent with the patent authorization announcement number CN214123980U, the patent name is a square aluminum shell lithium battery inverted extrusion device, including a workbench, a fixed pressure plate, a movable pressure plate, two side pressure plates and a driving mechanism; the fixed pressure plate is vertically fixed on the workbench, the two side pressure plates are located on the same side of the fixed pressure plate and the two side pressure plates are arranged parallel to each other, one end of the two side pressure plates is vertically connected to the two ends of the fixed pressure plate respectively, the movable pressure plate is arranged parallel to the fixed pressure plate and the movable pressure plate is located between the two side pressure plates; the driving mechanism is installed on the workbench, and the driving mechanism is used to drive the movable pressure plate to approach or move away from the fixed pressure plate, so that the means of determining the quality of the battery cell after sealing is more sufficient and the product is safer. However, before the battery is squeezed, it needs to be manually transported to the workbench, and after the battery is squeezed, the battery needs to be taken out for manual visual inspection. Summary of the invention

[0006] The technical problem to be solved by the present invention is to solve the problem that the existing solutions for battery cell leakage due to squeezing are to manually take out the battery cell before it goes off the production line, and then use a separate tool to squeeze the battery cell and turn it upside down, which cannot be coordinated with the automation of the complete process production line of the battery cell, and to use a separate tool to squeeze the battery cell and turn it upside down and then judge whether the battery cell is leaking through manual visual inspection.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] An automatic detection device for battery cell leakage comprises: a circulation assembly (100) for circulating battery cell trays (110) and transmitting them to various workstations, and a loading assembly (200), an extrusion assembly (300), a leakage detection assembly (400) and a unloading assembly (500) which are sequentially located next to the circulation assembly (100) in a process sequence; the extrusion assembly (300) comprises an extrusion rotation device, the extrusion rotation device comprises an extrusion component (330) and an auxiliary rotation component (340), the extrusion component (330) extrudes a battery cell (800), and the auxiliary rotation component (340) assists the extrusion component (330) to flip the extruded battery cell (800) back to its original position after being inverted.

[0009] Advantages: The extrusion assembly is set next to the circulation assembly. The extruded battery cell is flipped and returned to its original position through the extrusion rotating device, so that the extruded and inverted battery cell is placed back on the battery tray. The extruded battery cell is transferred to the next station through the circulation assembly, which solves the problem that the battery cell extrusion leakage solution is to manually take out the battery cell before it goes off the line, and then use a separate tool to extrude and invert the battery cell, which cannot be coordinated with the complete process production line of the battery cell. The leakage of electrolyte in the extruded battery cell is optically detected by the leak detection assembly to avoid manual visual inspection. The loading and unloading assemblies can realize the automatic handling of battery cell loading and unloading, avoiding manual handling and improving work efficiency.

[0010] In one embodiment of the present invention, the extrusion rotation device also includes a supporting component (320), and the supporting component (320) includes 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 located below the fixed plate (321) and can move up and down relative to the fixed plate (321) under the drive of an external force; the extrusion sliding plate (325) and the slide rail slider pair (327) are located at one end of the lifting plate (322), and the extrusion sliding plate (325) can move forward and backward on the lifting plate (322) through the slide rail slider pair (327); the extrusion fixed plate (326) is located and fixedly connected to the other end of the lifting plate (322).

[0011] In one embodiment of the present invention, the extrusion component (330) includes a pushing electric cylinder (331), a pushing block (332), an extrusion rotating motor (333) and a movable bearing seat (334); the pushing electric cylinder (331) is fixedly connected to the lifting plate (322); the pushing block (332) is located at the output end of the pushing electric cylinder (331), and one end of the pushing block is fixedly connected to the extrusion sliding plate (325), and the pushing electric cylinder (331) can make the extrusion sliding plate (325) move backward along the slide rail slider pair (327); the movable bearing seat (334) is connected to 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 to the output end of the extrusion rotating motor (333).

[0012] In one embodiment of the present invention, the extrusion component (330) further includes a flipping battery core component (359), which is located between the extrusion fixing plate (326) and the movable bearing seat (334), and includes a plurality of rotating plates (335), at least two pairs of light rods (337) and a plurality of battery core clamps (338). The plurality of rotating plates (335) are connected to the movable bearing seat (334). When the movable bearing seat (334) rotates, it can drive the plurality of rotating plates (335) to rotate together. The other end of the movable bearing seat (334) is fixedly connected to the battery clamping plate (338); the two ends of the light rod (337) are respectively fixedly connected to the rotating plate (335); a plurality of battery clamping plates (338) are sleeved on the light rod (337) and can slide on the light rod (337); when the plurality of rotating plates (335) are subjected to thrust, the plurality of battery clamping plates (338) are squeezed, and when the plurality of rotating plates (335) are subjected to tension, the squeezed plurality of battery clamping plates (338) are pulled apart.

[0013] In one embodiment of the present invention, the flip battery core component (359) further comprises a plurality of buckles (339), the plurality of buckles (339) comprising a first buckle (3391), a second buckle (3392) and a third buckle (3393) connected end to end in sequence to form a plurality of buckles (339); one end of the first buckle (3391) is fixedly connected to the battery core clamping plate (338) closest to the movable bearing seat (334), and the other end is open upward, A concave portion (3394) is formed, and a groove (3396) is arranged at the bottom of the concave portion (3394), and the groove (3396) is engaged with the battery clamp (338); one end of the third clip (3393) is connected to the plurality of rotating plates (335), and the other end is open downward to form a convex portion (3395); the second clip (3392) is in an "S" shape, and has both the concave portion (3394) and the convex portion (3395).

[0014] In one embodiment of the present invention, the auxiliary rotating component (340) includes an auxiliary rotating cylinder (341) and a rotating shaft (342), wherein 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 an auxiliary force for flipping the flipping battery core component (359), and a position sensor (362) is also provided on the auxiliary rotating cylinder (341) to detect whether the auxiliary rotating cylinder (341) is flipped into place.

[0015] In one embodiment of the present invention, the extrusion rotation device also includes a reset member (370) and a lifting member (350), the lifting member (350) includes a lifting member (351) and a lifting cylinder (352), a pair of reset members (370) are respectively located on both sides of the lifting plate (322), one end of each reset member is fixedly connected to the lifting plate (322); the lifting member (351) is fixedly connected to the lifting plate (322); the lifting cylinder (352) is fixedly connected to the fixed plate (321), and its output end is fixedly connected to the lifting member (351); the lifting plate (322) can be moved up and down by the lifting member (350).

[0016] In one embodiment of the present invention, the battery cell tray (110) comprises a positioning plate (111) and a plurality of battery cell limiting devices (112), wherein the plurality of battery cell limiting devices (112) are fixedly connected to the positioning plate (111); along both sides of the flow direction of the battery cell tray (110), the positioning plate (111) is provided with notches (1111), and a limiting square hole (1113) is also provided therein.

[0017] In one embodiment of the present invention, each of the battery cell limiting devices (112) comprises:

[0018] A pair of side limiting plates (1121) are respectively fixed on two sides of the long sides of the limiting square hole (1113);

[0019] A linear guide tube (1124) is located on a side of a pair of side limiting plates (1121) away from the limiting square hole, and is located inside the positioning plate (111) and fixedly connected thereto;

[0020] A guide rod (11252) located in the linear guide tube (1124);

[0021] The bottom plate (1123) is fixedly connected to one end of the guide rod (11252).

[0022] In one embodiment of the present invention, each of the battery cell limiting devices (112) further comprises:

[0023] A plurality of intermediate limiting plates (1122), located in the limiting square hole (1113), one end of which is fixedly connected to the bottom plate (1123);

[0024] A pair of lower pressing plates (1126) fixedly connected to the guide rods (11252);

[0025] The spring (11251) is sleeved on the guide rod (11252) and is located between the lower pressing plate (1126) and the positioning plate (111).

[0026] In one embodiment of the present invention, a pair of the lower pressure plates (1126) are symmetrically located on both sides of a pair of the side limit plates (1121), and the short sides of the pair of the lower pressure plates (1126) are diagonally arranged, and the short sides are away from the side limit plates (1121).

[0027] The present invention also provides a method for detecting a battery cell leakage using an automatic detection device, comprising the following steps:

[0028] The loading assembly (200) simultaneously clamps a plurality of the battery cells (800) and places them in a battery cell tray (110) on the loading assembly (200);

[0029] The battery cell tray (110) drives the plurality of battery cells (800) to flow through the flow assembly (100) to the extrusion assembly (300) station;

[0030] The extrusion rotating device moves downward, and the extrusion component (330) is located in the battery cell tray (110) to extrude the battery cell (800);

[0031] The extrusion rotating device and the extruded battery cell (800) move upward;

[0032] The squeezing component (330) and the auxiliary rotating component (340) turn the squeezed battery cell (800) upside down and keep it upside down for a certain period of time;

[0033] The pressing component (330) and the auxiliary rotating component (340) flip the inverted battery core (800) back to the normal position;

[0034] The extrusion rotating device and the returned battery cell (800) move downward;

[0035] The pressing component (330) places the restored battery cell (800) back into the battery cell tray (110);

[0036] The extrusion rotating device moves upward;

[0037] The battery cell tray (110) drives the plurality of battery cells (800) that have been extruded to be transferred to the leak detection component (400) station through the transfer component (100);

[0038] The leakage detection component (400) performs online detection of electrolyte leakage in the plurality of battery cells (800) after extrusion through an optical solution, and transmits the detection result to the blanking component (500);

[0039] The battery cell tray (110) drives the plurality of battery cells (800) that have completed testing to be transferred to the unloading station through the transfer component (100);

[0040] The unloading station controls and clamps each of the battery cells (800) individually according to the detection result, and transports the plurality of battery cells (800) to different subsequent stations.

[0041] In one embodiment of the present invention, the extrusion rotating device moves downward, the extrusion component is located in the battery cell tray, and extruding the battery cell further comprises:

[0042] The reset member presses the lower pressing plate, and the middle limiting plate moves downward, so that a gap is left between two adjacent battery cells, and the extrusion component is located in the gap to extrude the plurality of battery cells.

[0043] In one embodiment of the present invention, when the extrusion rotating device moves upward, the middle limiting plate rises due to spring rebound and is located in the interval again.

[0044] In one embodiment of the present invention, the leakage detection component performs online detection of electrolyte leakage of the multiple battery cells after extrusion through an optical solution, including: an optical detection component identifies the difference between the optical imaging of the leakage state of the battery cell surface and the normal state without leakage, and judges the leakage state of the battery cell according to the difference.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. The battery cell tray mainly plays the role of limiting and preventing the battery cell from tipping over during the transfer of the battery cell between workstations. At the same time, when the battery cell tray is under the extrusion assembly station, the middle limit plate moves downward during the downward pressure of the lifting device, and is in a downward pressure state. At this time, the left and right sides of the battery cell still maintain the limit, and the battery cell can be moved in the front and back directions, thereby realizing the battery cell extrusion function. In order to prevent the risk of crushing the battery cell due to the middle limit block not being pressed down in place during the longitudinal extrusion of the battery cell, multiple downward pressure sensors are set at the extrusion assembly station, on the side of the flow group, and under the bottom plate to detect whether the lower pressure plate is pressed in place, and ensure that the battery cell extrusion action is performed after the middle limit plate is lowered into place. When the lifting component drives the extrusion component, the auxiliary rotating component and the reset component to rise, the guide rod and the spring are used to reset the middle limit plate to the normal state, and the front and back directions of the battery cell are limited again, realizing the limiting function and protective effect of the battery cell in the subsequent battery cell transportation, battery cell detection and battery cell unloading processes.

[0047] 2. The circulation component adopts a double-layer return flow line, which is a double-layer circulating speed chain line to realize the circulation of the battery tray. The top-layer streamlined body drives the fully loaded battery tray to carry out material circulation, and the lower-layer streamlined body realizes the reflux function of the battery tray. There are multiple stopping mechanisms and multiple lifting and positioning mechanisms designed on the speed chain line body. Through multiple positioning sensors and station controllers, the battery tray is stopped and positioned at the corresponding station.

[0048] 3. Through the feeding mechanical axis, multi-axis motion and flexible handling of battery cells are realized. Through the pneumatic controller, multiple clamps are controlled to clamp or release the battery cells at the same time. The insulating pads set on multiple clamps can prevent the battery cells from contacting metal and sparking, and at the same time increase the friction coefficient between the clamps and the battery cells to ensure the clamping force between the clamps and the battery cells. The automatic loading of battery cells is realized through the feeding assembly.

[0049] 4. The lifting component drives the extrusion component, the auxiliary rotating component and the battery cell to be extruded to move up and down, and the extrusion component is used to longitudinally extrude the battery cell in the battery cell tray, and the pressure is fed back to the extrusion controller through the pressure sensor to control the extrusion pressure. The extrusion rotating motor and the auxiliary rotating component drive the extruded battery cell to rotate, and the extruded battery cell is flipped and then returned to the normal position, that is, flipped 180°, and the position sensor is used to feedback the position signal to control the rotation angle. The first buckle, the second buckle and the third buckle are used to ensure that the battery cell is accurately placed back to the corresponding position of the battery cell tray.

[0050] 5. Through the leak detection component, an optical solution is used to detect leakage, and the difference in optical imaging between the battery cell surface in the leakage state and the normal state without leakage is identified, so as to judge the leakage situation of the battery cell and realize automatic leakage detection.

[0051] 6. The unloading component is connected to the leak detection component through communication. According to the detection result of the leak detection component, the air circuit of each clamp is controlled separately, and the qualified battery cells are taken away and placed in the battery material frame, and the unqualified battery cells are placed in the NG component to realize automatic unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 Schematic diagram of an automatic detection device for battery cell leakage according to an embodiment of the present invention.

[0053] Figure 2 Schematic diagram of an automatic detection device for battery cell leakage from another angle according to an embodiment of the present invention.

[0054] Figure 3 Schematic diagram of a battery cell tray according to an embodiment of the present invention.

[0055] Figure 4 FIG. 1 is a schematic diagram of a battery cell tray from another angle according to an embodiment of the present invention.

[0056] Figure 5 Schematic diagram of a first double-layer return line body according to an embodiment of the present invention.

[0057] Figure 6 It is a partial enlarged view of the stopping mechanism and the lifting and positioning mechanism of an embodiment of the present invention.

[0058] Figure 7 Schematic diagram of a loading assembly according to an embodiment of the present invention.

[0059] Figure 8 This is a schematic diagram of a battery cell extrusion assembly according to an embodiment of the present invention.

[0060] Fig. 9 Schematic diagram of a supporting device according to an embodiment of the present invention.

[0061] Fig.10Schematic diagram of an extrusion rotating device according to an embodiment of the present invention.

[0062] Fig.11 Schematic diagram of an extrusion rotating device from another angle according to an embodiment of the present invention.

[0063] Fig.12 It is a partial enlarged view of the first buckle and the second buckle of the embodiment of the present invention.

[0064] Fig.13 It is a partial enlarged view of the second buckle and the third buckle of the embodiment of the present invention.

[0065] Fig.14 The present invention is a flow chart of a method for performing cell extrusion using a cell extrusion assembly according to an embodiment of the present invention.

[0066] Fig.15 Schematic diagram of an NG component according to an embodiment of the present invention.

[0067] Fig.16 A flow chart of a method for detecting a battery cell leakage using an automatic detection device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0068] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described in conjunction with the accompanying drawings of the specification.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0070] Embodiment 1

[0071] See also Figure 1 and Figure 2 As shown, the present invention provides an automatic detection device for battery cell leakage, which is used for circulating battery cell trays 110 to be transferred to the circulation assembly 100 of each station, and the loading assembly 200, the extrusion assembly 300, the leakage detection assembly 400 and the unloading assembly 500 are sequentially located next to the circulation assembly 100 according to the process sequence. The extrusion assembly 300 includes an extrusion rotating device composed of an extrusion component 330 and an auxiliary rotating component 340. The extrusion component 330 extrudes the battery cell 800, and the auxiliary rotating component 340 assists the extrusion component 330 to flip the extruded inverted battery cell 800 and return it to its original position.

[0072] See also Figures 1 to 3As shown, in one embodiment provided by the present invention, the battery tray 110 includes a positioning plate 111 and a plurality of battery limiting devices 112, and the plurality of battery limiting devices 112 are located in the positioning plate 111 and fixedly connected to the positioning plate 111. Along the two sides of the flow direction of the battery tray 110, notches 1111 are provided on both sides of the positioning plate 111, and positioning holes 1112 and limiting square holes 1113 are also provided in the positioning plate 111. In this embodiment, the number of the plurality of battery limiting devices 112 is, for example, three, including a first battery limiting device 112A, a second battery limiting device 112B and a third battery limiting device 112C respectively fixed on the positioning plate 111 in sequence. And each battery limiting device 112 includes 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. Among them, a pair of side limit plates 1121 are fixedly located on both sides of the long side of the limit square hole 1113, and the middle limit plate 1122 is located inside the pair of side limit plates 1121, that is, inside the limit square hole 1113. One end of the middle limit plate 1122 is fixedly connected to the bottom plate 1123, and the distance between two adjacent middle limit plates 1122 matches the thickness of the battery cell 800. The linear guide tube 1124 is located on the side of the pair of side limit plates 1121 away from the limit square hole 1113, and penetrates the positioning plate 111 and is fixedly connected thereto. The number of the linear guide tubes 1124 is, for example, 4, and they are located on one side of the side limit plate 1121 in a group of two. A wear-resistant sleeve 11241 is provided at one end of the linear guide tube 1124. The spring rod 1125 includes a spring 11251 and a guide rod 11252. The guide rod 11252 is located in the spring 11251. One end of the guide rod 11252 passes through the linear guide tube 1124 and is fixedly connected to the bottom plate 1123. The other end is fixedly connected to the lower pressing plate 1126. The spring 1151 is located between the lower pressing plate 1126 and the wear-resistant sleeve 11241. The lower pressing plate 1126 is "L" shaped. A pair of lower pressing plates 1126 are symmetrically located on both sides of the outer side of the side limiting plate 1121. The short sides of the lower pressing plates 1126 are diagonally arranged and the short sides of the lower pressing plates 1126 are away from the side limiting plate 1121.

[0073] See also Figures 1 to 4As shown, in an embodiment provided by the present invention, specifically, multiple battery cells 800 are located in a pair of side limit plates 1121, and the distance between the pair of side limit plates 1121 matches the width of the battery cells 800. The multiple battery cells 800 are separated by the middle limit plate 1122. When the extrusion assembly 300 moves downward, the reset member 700 presses the lower pressure plate 1126, and the middle limit plate 1122 and the bottom plate 1123 move downward to leave a space between the multiple battery cells 800. The extrusion assembly 300 is located in the space to extrude the multiple battery cells 800. After extrusion, the extrusion assembly 300 is lifted up again, and the reset member 700 releases the lower pressure plate 1126. At this time, under the action of the spring 11251, the middle limit plate 1122 and the bottom plate 1123 are lifted up to return to normal. After the extrusion assembly 300 is lifted, the multiple battery cells 800 are flipped 180° to one side to invert the multiple battery cells 800. After maintaining the pressure for a period of time, the extrusion assembly 300 flips the multiple battery cells 800 on the same side 180° to return the multiple battery cells 800 to the normal state. Finally, the extrusion assembly 300 moves the multiple battery cells 800 downward, resets the component 700 and presses the lower pressure plate 1126, and places the multiple battery cells 800 in the side limit plate 1121 again. Then, the multiple battery cells 800 are pulled apart through multiple buckles to be located in the original positions in the battery tray 110. The extrusion assembly 300 is lifted upward again to lift the middle limit plate 1122 and the bottom plate 1123 upward to separate the multiple battery cells 800. Under normal conditions of the battery tray 110, as shown in FIG. Figure 4 As shown in the first battery cell limiting device 112A and the third battery cell limiting device 112C, when the battery cell tray 110 is pressed down, as shown in FIG. Figure 4 As shown in the second battery cell limiting device 112B.

[0074] See also Figure 1 and Figure 2As shown, in one embodiment provided by the present invention, the circulation assembly 100 further includes a double-layer return line 122, which is fixedly connected to the ground through a ground anchor connector, and the battery tray 110 circulates on the double-layer return line 122. The double-layer return line 122 is divided according to the height direction, including a top streamline 1221 and a bottom streamline 1222, and the top streamline 1221 is located above the bottom streamline 1222. The double-layer return line 122 is divided according to the workstation of the process flow, including a first double-layer return line 121, a second double-layer return line 122 and a third double-layer return line 123 arranged in sequence, wherein the feeding assembly 200 is located on one side of the first double-layer return line 121, the extrusion assembly 300 and the leakage detection assembly 400 are respectively located on both sides of the second double-layer return line 122, and the unloading assembly 500 is located on one side of the third double-layer return line 123. The first double-layer return line body 121 and the third double-layer return line body 123 have the same structure and connection relationship. To simplify the description, this embodiment is described by taking the first double-layer return line body 121 as an example.

[0075] See also Figure 1 and Figure 2 and Figure 5As shown, in one embodiment of the present invention, a first support frame 1211, a moving plate 1212, a transmission chain 1213, a driving motor 1214 and a lifting machine 1215 are provided on the first double-layer return line body 121. The moving plate 1212 can slide on the first support frame 1211 through the lifting machine 1215, the transmission chain 1213 and the driving motor 1214 are located on one end surface of the moving plate 1212, and the driving motor 1214 drives the transmission chain 1213, thereby driving the battery tray 110 to move rightward on the top layer of the streamlined body 1221, and the lifting machine 1215 is fixedly connected to the other end surface of the moving plate 1212, driving the moving plate 1212 to move up and down on the first support frame 1211, thereby driving the empty battery tray 110 whose battery cell 800 has been taken away by the unloading assembly 500 to return to the second double-layer return line body 122 again. Among them, the difference between the third double-layer return line body 123 and the first double-layer return line body 121 is that the third double-layer return line body 123 drives the battery tray 110 to move to the left to the bottom streamline body 1222. Specifically, the loading assembly 200 clamps the battery cell 800 from the battery cell frame and places it on the battery tray 110 above the first double-layer return line body 121. The battery tray 110 loaded with the battery cell 800 is moved to the right on the top streamline body 1221 through the first double-layer return line body 121. The battery tray 110 loaded with the battery cell 800 is successively transferred to the third double-layer return line body 123 after passing through the extrusion assembly 300 and the leakage detection assembly 400. The unloading assembly 500 clamps the battery cell after pressurization and leakage detection from the battery tray 110 on the third double-layer return line body 123. 800, after the unloading assembly 500 takes away the battery cell 800, the lifting machine 1215 of the third double-layer return line body 123 drives the movable plate 1212 to move downward, and moves the empty battery cell tray 110 to the bottom streamline body 1222 of the second double-layer return line body 122, and the empty battery cell tray 110 moves along the bottom streamline body 1222 to the first double-layer return line body 121, and moves upward through the lifting machine of the first double-layer return line body 121, and the battery cell 800 is clamped by the loading assembly 200 and placed on the empty battery cell tray 110, completing a cycle.

[0076] See also Figure 1 , 2 , 6 and Figure 7As shown, in one embodiment provided by the present invention, the flow assembly 100 also includes a station controller (not shown in the figure), and a plurality of stop mechanisms 130, a plurality of lifting and positioning mechanisms 140, a plurality of positioning sensors 150 and a plurality of downward pressure sensors 160 fixed on the double-layer return line body 122 and located below the battery tray 110. Among them, the plurality of stop mechanisms 130 and the second double-layer return line body 122 are used to separate the stations. The plurality of lifting and positioning mechanisms 140 are respectively located at each station of the double-layer return line body 122, and are used to accurately position the battery tray 110. The plurality of positioning sensors 150 are respectively located on the side of the double-layer return line body 122, and are used to detect the position of the battery tray 110. The plurality of downward pressure sensors 160 are located on the side of each process position of the second double-layer return line body 122, and are used to detect whether the lower pressure plate 1126 is pressed in place, and finally the middle limit plate 1122 and the bottom plate 1123 are moved downward to the standard position. The station controller is in communication with a plurality of stop mechanisms 130, a plurality of lifting and positioning mechanisms 140, a plurality of positioning sensors 150 and a plurality of pressing sensors 160. Each lifting and positioning mechanism 140 includes a first lifting plate 141, a second lifting plate 142, a telescopic rod 143, a positioning member 144 and a lifting cylinder 145, one end of the telescopic rod 143 is fixedly connected to one side of the first lifting plate 141, and the other end is fixedly connected to the second lifting plate 142, the positioning member 144 is fixedly located at the other side of the first lifting plate 141, and one side of the first lifting plate 141 is also fixedly connected to the output end of the lifting cylinder 145.

[0077] See also Figure 1 , 2 , 6 and Figure 7 As shown, in one embodiment provided by the present invention, when multiple positioning sensors 150 detect that the battery tray 110 has reached the process position, the station controller controls the stop mechanism 130 to lift up, so that the stop mechanism 130 engages with the notch 1111 of the battery tray 110, and restricts the battery tray 110 from continuing to flow to the next process position. The station controller also controls the lifting cylinder 145 to lift the first lifting plate 141 upward, indirectly lifting the battery tray 110, so that the positioning member 144 is located in the positioning hole 1112 of the battery tray 110. When this process task is completed, the station controller controls the stop mechanism 130 to descend and the lifting cylinder 145 to contract so that the first lifting plate 141 descends, and the positioning member 144 withdraws from the positioning hole 1112, allowing the battery tray 110 to flow to the next process position.

[0078] See also Figure 1 , 2 and Figure 7As shown, in one embodiment provided by the present invention, the loading assembly 200 includes a loading clamp assembly 210 composed of a pneumatic device 211, a plurality of clamps 212 and a pneumatic controller 213. The plurality of clamps 212 are connected to the output end of the pneumatic device 211, and the pneumatic controller 213 is communicated with the pneumatic device 211 to control the on-off of the air circuit of the pneumatic device 211, thereby controlling the plurality of clamps 212 to clamp or release the battery cells at the same time.

[0079] See also Figure 1 , 2 and Figure 7 As shown, in one embodiment provided by the present invention, the feeding assembly 200 further includes a feeding mechanical shaft 220 consisting 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 to the ground, and one end of the second feeding mechanical shaft 222 is movably connected to 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 to the other end of the second feeding mechanical shaft 222, and the other end is movably connected to 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 clamp assembly 210 also includes a telescopic member 214, which is connected to the output end of the pneumatic device 211 and is located above the multiple clamps 212. The telescopic member 214 is also connected to the pneumatic controller 213. The telescopic member 214 does not affect the rotation of the multiple clamps 212 on the pneumatic device 211, and according to the control instructions of the pneumatic controller 213, the multiple clamps 212 move up and down at the output end of the pneumatic device 211. Insulating pads 2121 are also provided on the multiple clamps 212 to prevent the battery cell 800 from contacting the metal and sparking, and at the same time increase the friction coefficient between the clamps 212 and the battery cell 800, so as to ensure the clamping force between the clamps 212 and the battery cell 800, and realize the flexible transportation of the battery cell 800 through the feeding mechanical shaft 220.

[0080] See also Figure 1 , 2 and Figure 7As shown, in one embodiment provided by the present invention, the plurality of clamps 212 are moved to the upper part of the battery core material frame located on one side of the first double-layer return line body 121 by the feeding mechanical shaft 220, the pneumatic controller 213 controls the plurality of clamps 212 to open, and the plurality of clamps 212 are moved down into the battery core material frame by the telescopic member 214, the pneumatic controller 213 controls the plurality of clamps 212 to clamp the battery core 800 at the same time, the telescopic member 214 moves the plurality of clamps 212 upward, and the feeding mechanical shaft 220 drives the feeding assembly 200 moves to the top of the battery cell tray 110 above the first double-layer return line body 121, and moves the multiple jaws 212 downward through the telescopic member 214 to place the battery cell 800 in the battery cell limiting device 112. After the pneumatic controller 213 controls the multiple jaws 212 to release the battery cell 800 at the same time, the telescopic member 214 moves the multiple jaws 212 upward again, and the loading mechanical shaft 220 moves the multiple jaws 212 to above the battery cell material frame located on one side of the first double-layer return line body 121, and the cycle is repeated.

[0081] See also Figure 8 As shown, in one embodiment provided by the present invention, the extrusion assembly 300 includes an extrusion rotating device, which is arranged on a supporting device 310, and can transfer the battery cell 800 flowing to the bottom of the extrusion rotating device, and restore it to its original position after extrusion rotation.

[0082] See also Fig. 9 As shown, in one embodiment provided by the present invention, the support device 310 includes a support leg 311 and a connecting beam 312 , one end of the support leg 311 is fixedly connected to the ground through an expansion bolt, and the other end is fixedly connected to the connecting beam 312 .

[0083] See also Fig.10 As shown, in one embodiment provided by the present invention, the extrusion and rotation device includes a supporting component 320, an extrusion component, an auxiliary rotation component 340, a lifting component 350, a detection device 360 ​​and a reset component 370. Through the mutual cooperation of the various components in the extrusion and rotation device, the battery cell can be extruded and rotated and then restored to its original position.

[0084] See also Fig.10 and Fig.11As shown, in one embodiment provided by the present invention, the support component 320 includes a fixed plate 321, a lifting plate 322, a plurality of linear bearings 323 and a lifting limit plate 324. The fixed plate 321 is fixedly connected to the connecting crossbeam 312, and a lifting component 350 is fixedly arranged on the top surface of the fixed plate 321. One end of the plurality of linear bearings 323 passes through the four corners of the fixed plate 321 and is fixedly connected to the lifting limit plate 324, and the other end of the plurality of linear bearings 323 is fixedly connected to one side of the lifting plate 322, and the lifting component 350 is also fixedly connected to one side of the lifting plate 322, and the lifting component 350 provides power to lift and lower the lifting plate 322. The support component 320 also includes an extrusion sliding plate 325, an extrusion fixed plate 326 and a slide rail slider pair 327, one side of the slide rail slider pair 327 is fixedly located at one end of the other side of the lifting plate 322, and the other side is fixedly connected to the extrusion sliding plate 325, so that the extrusion sliding plate 325 can slide on the lifting plate 322. The pressing fixing plate 326 is fixed to the other end of the other side surface of the lifting plate 322 by bolts.

[0085] See also Fig.10 and Fig.11 As shown, in one embodiment of the present invention, the extrusion component includes a push electric cylinder 331 and a push block 332, and the push electric cylinder 331 is fixedly connected to one side of the lifting plate 322. A first through hole 3221 is also provided on the lifting plate 322, and the through hole 3221 is on the same side of the lifting plate 322 as the extrusion sliding plate 325, and is located between two adjacent slide rail slider pairs 327. The push block 332 is located on one side of the output end of the push electric cylinder 331 and is located at the first through hole 3221, and one end of the push block 332 is fixedly connected to the extrusion sliding plate 325. When the output end of the push electric cylinder 331 extends, the push block 332 is pushed, so that the extrusion sliding plate 325 moves backward through the slide rail slider pair 327.

[0086] See also Fig.10 and Fig.11 As shown, in one embodiment of the present invention, the extrusion component 330 further includes an extrusion rotating motor 333, a movable bearing seat 334 and a flipping electric core component 359. A second through hole 3251 is provided on the extrusion sliding plate 325, and a copper sleeve is embedded inside 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 rotating telescopic rod 3341 is provided in the movable bearing seat 334. One end of the rotating telescopic rod 3341 is fixedly connected to the extrusion rotating motor 333 through a coupling, and the other end of the rotating telescopic rod 3341 is fixedly connected to the flipping electric core component 359. When the extrusion rotating motor 333 is working, the extrusion sliding plate 325 can be driven to move forward or backward through the movable bearing seat 334, and the flipping electric core component 359 can be made to extrude the electric core or restore the extruded electric core to its original position through the rotating telescopic rod 3341.

[0087] See also Fig.10 and Fig.11 As shown, in one embodiment of the present invention, the flipping battery core component 359 is located between the extrusion fixed plate 326 and the slide rail slider pair 327. The flipping battery core component 359 includes a plurality of rotating plates 335, a plurality of short shafts 336, at least two pairs of light rods 337, a plurality of battery core clamps 338 and a plurality of buckles 339. The light rods 337 pass through the plurality of battery core clamps 338 so that the plurality of battery core clamps 338 can slide on the light rods 337, and the plurality of buckles 339 are fixedly connected with the plurality of battery core clamps 338 so that the battery core clamps 338 can be pulled apart after the battery core clamps 338 complete the extrusion of the battery core. 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 located on a side close to the extrusion sliding plate 325, and the second rotating plate 3352 and the third rotating plate 3353 are located on a side close to the extrusion fixed plate 326. The first rotating plate 3351 is connected to the movable bearing seat 334. 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 through a plurality of short shafts 336. The plurality of short shafts 336 are respectively located at the four corners of the third rotating plate 3353, one end of which is fixedly connected to the third rotating plate 3353, and the second rotating plate 3352 is sleeved on the other end of the short shafts 336. When the second rotating plate 3352 is subjected to thrust through the short shafts 336, it approaches the third rotating plate 3353, and when the second rotating plate 3352 is subjected to tension, it moves away from the third rotating plate 3353. At least two pairs of light rods 337 are respectively fixedly connected to the first rotating plate 3351 and the second rotating plate 3352 at both ends, and include a first light rod 3371 and a second light rod 3372, with a certain horizontal height between the two.

[0088] See also Figures 10 to 14As shown, in one embodiment of the present invention, lugs 3381 are provided on both sides of the battery cell splint 338, and specifically, the battery cell splint 338 is in a "cross" shape. The first light rod 3371 passes through the lugs 3381, so that the battery cell splint 338 can slide on the first light rod 3371, and the top of the battery cell splint 338 is located between the second light rods 3371. When the multiple battery cell splints 338 are reversed, the multiple battery cell splints 338 are reversed together through the second light rods 3371. Among them, the other end of the rotating telescopic rod 3341 is fixedly connected to the battery cell splint 338 closest to the rotating telescopic rod 3341, and under normal conditions, the multiple battery cell splints 338 are in a pulled apart state. The plurality of buckles 339 include a first buckle 3391, a second buckle 3392 and a third buckle 3393 which are connected end to end in sequence, wherein one end of the first buckle 3391 is fixedly connected to the battery clamping plate 338 closest to the rotating telescopic rod 3341, and the other end is open upward to form a concave portion 3394, and a groove 3396 is provided at the bottom of the concave portion 3394, and the groove 3396 engages with the lug 3381. One end of the third buckle 3393 is fixedly connected to the second rotating plate 3352, and the other end is open downward to form a convex portion 3395. The second clip 3392 is arranged in an "S" shape, and has a recessed portion 3394 and a protruding portion 3395. Multiple second clips 3392 are connected end to end. When the end and end of a second clip 3392 are respectively located in the recessed portion 3394 and the protruding portion 3395 of the second clips 3392 on the adjacent two sides, it can move forward when the multiple battery clips 338 are squeezed, and move backward when the multiple battery clips 338 are pulled apart. The design rules of the first width b1 of the recess 3394 and the second width b2 of the protrusion 3395 are as follows: when multiple battery cell clamps 338 are pulled apart, two adjacent second clips 3392 contact and restrict each other, so that the distance between two adjacent battery cell clamps 338 is equal to the distance between two adjacent intermediate limit plates; when multiple battery cell clamps 338 are squeezed, the moving distance of each second clip 3392 in the recess 3394 and the protrusion 3395 is greater than the moving distance of each battery cell clamp 338, ensuring that when the battery cell 800 is squeezed, the two adjacent second clips 3392 do not contact each other.

[0089] See also Fig.10 As shown, in one embodiment of the present invention, the auxiliary rotating component 340 includes an auxiliary rotating cylinder 341 and a rotating shaft 342. The auxiliary rotating cylinder 341 is fixedly connected to the extrusion fixing plate 326, and its output end is fixedly connected to one end of the rotating shaft 342 through a coupling, and the other end of the rotating shaft 342 is fixedly connected to the third rotating plate 3353. The auxiliary rotating cylinder 341 provides auxiliary power, and together with the extrusion rotating motor 333, the flipping battery core component 359 is turned upside down and then restored to the normal state through the extruded battery core.

[0090] See also Fig.10As shown, in one embodiment of the present invention, the lifting component 350 includes a lifting member 351, a lifting cylinder 352, a stopper 353 and a buffer 354. One end of the lifting member 351 is fixedly connected to one side of the lifting plate 322, and the lifting cylinder 352 is fixedly located on the fixed plate 321. The output shaft of the lifting cylinder 352 passes through the fixed plate 321 and is fixedly connected to the other end of the lifting member 351. The stopper 353 is fixedly located in the fixed plate 321. When the lifting cylinder 352 drives the lifting member 351 to rise, the lifting plate 322 and the parts fixed to the lifting plate 322 are lifted together. When the bottom of the stopper 353 touches the lifting plate 322, the lifting cylinder 352 stops lifting. When the lifting cylinder 352 pushes the lifting member 351 downward, the lifting plate 322 and the parts fixed to the lifting plate 322 are driven to descend together, and when the top of the limit member 353 touches the lifting limit plate 324, the lifting cylinder 352 stops pushing the lifting member 351. The buffer 354 is located on one side of the lifting cylinder 352 and is fixedly connected to the fixing plate 321.

[0091] See also Fig.10 As shown, in one embodiment of the present invention, the detection 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, and is used to detect the pressure of squeezing the battery cell. The position sensor 362 is connected to the auxiliary rotating cylinder 341 in communication with the auxiliary rotating cylinder 341, and is used to detect whether the auxiliary rotating cylinder 341 is rotated into place through the position sensor 362.

[0092] See also Figure 8 , Fig.10 and Fig.11 As shown, in one embodiment of the present invention, a pair of reset members 370 are respectively located on both sides of the fixed plate 321, and one end thereof is fixedly connected to the fixed plate 321. When the battery tray 110 is transferred to the station of the extrusion assembly 300, the pair of reset members 370 are located directly above the lower pressing plate 1126. When the lifting cylinder 352 pushes the lifting member 351 downward, the pair of reset members 370 press the lower pressing plate 1126, and the middle limit plate 1122 moves downward to leave a space, so that a plurality of battery clamps 338 are located in the space to extrude the battery cell 800. The extrusion assembly also includes an extrusion controller (not shown in the figure), which is in communication with the pushing electric cylinder 331, the extrusion rotating motor 333, the auxiliary rotating cylinder 341, the lifting cylinder 352 and the detection device 360, and controls the extrusion component 330, the auxiliary rotating component 340 and the lifting component 350 to complete the extrusion of the battery cell 800.

[0093] See also Figures 8 to 13As shown, in one embodiment of the present invention, when the battery cell 800 moves to the station of the extrusion assembly 300, the lifting cylinder 352 pushes the lifting member 351 to move the lifting plate 322 downward, and the reset member 370 presses the battery cell tray, so that the multiple battery cell clamps 338 are respectively located in two adjacent battery cells 800, and the extrusion rotating motor 333 is started, and the rotating telescopic rod 3341 is rotated together through the coupling, and the extrusion sliding plate 325 is moved forward along the slide rail slider pair 327 by moving the bearing seat 334, so that the first rotating plate 3351 is squeezed in the direction of the second rotating plate 3352, and the pressure sensor 361 detects the pressure at this time. At the same time, the rotating telescopic rod 3341 moves forward under the rotation, so that the multiple battery cell clamps 338 squeeze the battery cell 800. The lifting cylinder 352 drives the lifting member 351 to move the lifting plate 322 upward. When it rises to a certain height, the auxiliary rotating cylinder 341 is turned on, and the flipping battery cell component 359 is driven to rotate together through the rotating shaft 342. The rotation direction is the same as the rotation direction of the extrusion rotating motor 333, so that the battery cell 800 is inverted, and inverted for a first period of time, and the battery cell 800 is pressure-maintained. If the battery cell weld is unqualified, the electrolyte will flow out of the battery cell weld when the battery cell 800 is inverted, which is convenient for the next process detection. When the battery cell 800 is pressure-maintained, the extrusion rotating motor 333 is reversed, and the auxiliary rotating cylinder 341 keeps the same direction as the extrusion rotating motor 333 at the same time, so that the inverted battery cell 800 returns to the normal state again, and the auxiliary rotating cylinder 341 is turned off. The lifting cylinder 352 pushes the lifting member 351 to move the lifting plate 322 downward, and the reset member 370 presses the battery cell tray to place the battery cell 800 in the battery cell tray. At the same time, the push cylinder 331 is started, and the output end of the push cylinder 331 pushes the push block 332, so that the extrusion sliding plate 325 slides backward. At the same time, the extrusion rotation motor 333 is reversed, so that the extrusion sliding plate 325 also slides backward. Through the buckle 339, multiple battery clamps 338 are pulled apart, driving multiple battery cells 800 to their original positions in the battery tray. The push cylinder 331 and the extrusion rotation motor 333 are turned off, and the lifting cylinder 352 drives the lifting member 351 to move the lifting plate 322 upward. At this time, the battery tray will complete the extrusion of the battery cell 800 and transfer it to the next station through circulation.

[0094] See also Figure 3 ,and Figures 8 to 13 As shown, in one embodiment provided by the present invention, three battery cell limiting devices 112 are provided on the battery cell tray 110, and correspondingly, three groups of extrusion and rotation devices are sequentially provided on the supporting device 310, which are respectively used to extrude, invert and reset the battery cells 800 in the three battery cell limiting devices 112.

[0095] See also Fig.14As shown, the present invention also provides a method for extruding a battery cell using a battery cell extrusion assembly, including the extrusion rotating device extruding the battery cell below it, lifting the battery cell, rotating and inverting the battery cell, maintaining pressure, rotating and returning the battery cell to the original position after the extrusion and rotation are completed. Specifically, it includes:

[0096] S1000, when the battery cell flows to the station of the battery cell extrusion assembly, the lifting cylinder pushes the lifting plate to move downward, so that a plurality of battery cell clamping plates are placed in the battery cell tray.

[0097] S2000, start the extrusion rotating motor to drive the rotating telescopic rod to rotate together, and the mobile bearing seat rotates to drive the extrusion sliding plate to move forward along the slide rail slider pair, so that the first rotating plate is squeezed in the direction of the second rotating plate; at the same time, the rotating telescopic rod pushes the plurality of battery cell clamping plates to squeeze the battery cells in the battery cell tray;

[0098] S3000, the lifting cylinder drives the lifting plate to move upward, and when it rises to a certain height, the extrusion rotating motor and the auxiliary rotating component drive the flipping battery cell component to flip, so that the battery cell is inverted and pressure maintained for a certain period of time;

[0099] S4000, after the battery cell pressure maintenance is completed, the flipped battery cell component is returned to the normal position again by the extrusion rotating motor and the auxiliary rotating component;

[0100] S5000, closing the auxiliary rotating component, and the lifting cylinder pushes the lifting plate to move downward, so as to place the battery cell in the battery cell tray;

[0101] S6000, starting the pushing electric cylinder to push the pushing block to move backward, and at the same time, through the moving bearing seat, the extrusion sliding plate is moved backward, and through a plurality of buckles, a plurality of the battery cell clamping plates are longitudinally pulled apart in the battery cell tray;

[0102] S7000, turning off the pushing electric cylinder and the extrusion rotating motor, the lifting cylinder drives the lifting plate to move upward, and the battery cell after extrusion is located in the battery cell tray to be transferred to the next workstation.

[0103] See also Figure 1 and Figure 2As shown, in one embodiment provided by the present invention, the leak detection assembly 400 includes a fixed rod 410 and an optical detection member 420, the fixed rod 410 is fixed on both sides of the circulation assembly 100, the optical detection member 420 is located on the circulation assembly 100 and is fixedly connected to the fixed rod 410, and the battery cell 800 after extrusion is completed is subjected to online detection of electrolyte leakage at the battery cell weld and the injection port position by an optical scheme, and the difference in optical imaging of the surface of the battery cell 800 in the leakage state and the normal state without leakage is identified, so as to judge the leakage of the battery cell 800 and realize automatic detection of leakage. Specifically, the optical detection member 420 is a 2.5D camera, and the detection principle is: by controlling the light source to illuminate from different angles, a shadow image generated by the image concave-convex information is obtained, and finally a 3D information image is obtained by synthesizing and calculating. The leak detection assembly 400 also includes an information terminal (not shown in the figure), which is connected to the optical detection member 420 for communication, receives the detection information of the optical detection member 420, and judges whether multiple battery cells 800 meet the quality requirements.

[0104] See also Figure 1 and Figure 2 As shown, in one embodiment provided by the present invention, the battery cell leakage automatic detection device includes an NG component 600 and a safety protection component 700. The NG component 600 is located on one side of the unloading component 500. The safety protection component 700 is, for example, a protection net, which surrounds the circulation component 100, the loading component 200, the extrusion component 300, the leakage detection component 400, the unloading component 500 and the NG component 600 to ensure the safety of the staff. The safety protection component 700 is also, for example, a combination of a protection net and a safety door lock, an emergency stop switch and a safety door lock.

[0105] See also Figure 1 and Figure 2 As shown, in one embodiment provided by the present invention, the unloading assembly 500 and the loading assembly 200 can be considered as the same set of equipment, and the only difference is that the pneumatic controller 213 of the unloading assembly 500 controls the air circuit opening and closing of the multiple clamps 212 separately. The pneumatic controller 213 of the unloading assembly 500 is connected to the information terminal for communication, obtains the judgment result of the information terminal detecting the battery cell 800, takes away the battery cell 800 with qualified quality and places it in the battery cell material frame, and places the unqualified battery cell in the NG assembly 600.

[0106] See also Figure 1 and Fig.15As shown, in one embodiment provided by the present invention, the NG assembly 600 includes an NG support seat 610, a battery cell limiting device 620 and a full-fill sensor 630. The NG support seat 610 is fixedly connected to the ground, and the battery cell limiting device 620 is fixedly connected to the NG support seat 610, and is used to place the battery cells 800 that are judged to be unqualified. The full-fill sensor 630 is fixedly connected to the NG support seat 610, and is used to detect whether the battery cell limiting device 620 is in a full-fill state. When the battery cell limiting device 620 is in a full-fill state, the full-fill sensor 630 triggers an alarm signal to remind the staff to deal with these unqualified battery cells 800.

[0107] See also Fig.16 As shown, the present invention also provides another embodiment, a detection method using an automatic detection device for battery leakage, comprising the following steps:

[0108] S100, the loading assembly simultaneously clamps the plurality of battery cells and places them in a battery cell tray on the loading assembly;

[0109] S110, the battery cell tray drives the plurality of battery cells to flow to the extrusion assembly station through the flow assembly;

[0110] S200, the extrusion rotating device moves downward, and the extrusion component is located in the battery cell tray to extrude the battery cell;

[0111] S210, the extrusion rotating device and the extruded battery cell move upward;

[0112] S220, the squeezing component and the auxiliary rotating component turn the squeezed battery cell upside down for a certain period of time;

[0113] S230, the pressing component and the auxiliary rotating component flip the inverted battery cell back to an upright position;

[0114] S240, the extrusion rotating device and the returned battery cell move downward;

[0115] S250, the extrusion component puts the returned battery cell back into the battery cell tray;

[0116] S260, the extrusion rotating device moves upward;

[0117] S300, the battery cell tray drives the plurality of battery cells that have been extruded to be transferred to the leak detection component station through the transfer component;

[0118] S310, the leakage detection component performs online detection of electrolyte leakage of the plurality of battery cells after extrusion through an optical solution, and transmits the detection result to the blanking component;

[0119] S400, the battery cell tray drives the plurality of battery cells that have completed the inspection to be transferred to the unloading station through the transfer component;

[0120] S500, the unloading station controls and clamps each of the battery cells separately according to the detection result, and transports the multiple battery cells to different subsequent stations.

[0121] See also Fig.16 As shown, in another embodiment of the present invention, in step S200, the extrusion rotating device moves downward, the extrusion component is located in the battery cell tray, and the battery cell is extruded, and further comprising:

[0122] The reset member 370 presses the lower pressing plate 1126 , and the middle limiting plate 1122 moves downward, so that a gap is left between two adjacent battery cells 800 . The pressing component 330 is located in the gap to press the plurality of battery cells 800 .

[0123] See also Fig.16 As shown, in another embodiment of the present invention, in step S260, when the extrusion rotating device moves upward, the middle limiting plate 1122 rebounds and rises through the spring 11251 and is located in the interval again.

[0124] See also Fig.16 As shown, in one embodiment of the present invention, in step S310, the leakage detection component 400 performs online detection of electrolyte leakage of the multiple battery cells after extrusion through an optical solution, including: the optical detection component 420 identifies the difference between the optical imaging of the surface leakage state of the battery cell 800 and the normal state without leakage, and judges the leakage state of the battery cell 800 according to the difference.

[0125] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. An automatic detection device for battery leakage, characterized in that: include: A circulation assembly (100) for circulating a cell tray (110) and transferring it to each workstation, and a loading assembly (200), an extrusion assembly (300), a leak detection assembly (400) and a unloading assembly (500) which are sequentially located next to the circulation assembly (100) in a process sequence; the extrusion assembly (300) comprises an extrusion rotating device, the extrusion rotating device comprises an extrusion component (330) and an auxiliary rotating component (340), the extrusion component (330) extrudes the cell (800), and the auxiliary rotating component (340) assists the extrusion component (330) to flip the extruded cell (800) back to its original position after being inverted; The battery cell tray (110) comprises a positioning plate (111) and a plurality of battery cell limiting devices (112), wherein the plurality of battery cell limiting devices (112) are fixedly connected to the positioning plate (111); along both sides of the flow direction of the battery cell tray (110), the positioning plate (111) is provided with notches (1111), and a limiting square hole (1113) is also provided therein; Each of the battery cell limiting devices (112) comprises: A pair of side limiting plates (1121) are respectively fixed on two sides of the long sides of the limiting square hole (1113); A linear guide tube (1124) is located on a side of a pair of side limiting plates (1121) away from the limiting square hole, and is located inside the positioning plate (111) and fixedly connected thereto; A guide rod (11252) located in the linear guide tube (1124); A bottom plate (1123) fixedly connected to one end of the guide rod (11252); Each of the battery cell limiting devices (112) further comprises: A plurality of intermediate limiting plates (1122), located in the limiting square hole (1113), one end of which is fixedly connected to the bottom plate (1123); A pair of lower pressing plates (1126) fixedly connected to the guide rods (11252); The spring (11251) is sleeved on the guide rod (11252) and is located between the lower pressing plate (1126) and the positioning plate (111).

2. The automatic detection device for battery leakage according to claim 1, characterized in that: The extrusion rotating device also includes a supporting component (320), and the supporting component (320) includes 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 located below the fixed plate (321) and can move up and down relative to the fixed plate (321) under the drive of an external force; the extrusion sliding plate (325) and the slide rail slider pair (327) are located at one end of the lifting plate (322), and the extrusion sliding plate (325) can move forward and backward on the lifting plate (322) through the slide rail slider pair (327); the extrusion fixed plate (326) is located and fixedly connected to the other end of the lifting plate (322).

3. The automatic detection device for battery leakage according to claim 2, characterized in that: The extrusion component (330) includes a pushing electric cylinder (331), a pushing block (332), an extrusion rotating motor (333) and a movable bearing seat (334); the pushing electric cylinder (331) is fixedly connected to the lifting plate (322); the pushing block (332) is located at the output end of the pushing electric cylinder (331), and one end of the pushing block is fixedly connected to the extrusion sliding plate (325), and the pushing electric cylinder (331) can make the extrusion sliding plate (325) move backward along the slide rail slider pair (327); the movable bearing seat (334) is connected to 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 to the output end of the extrusion rotating motor (333).

4. The automatic detection device for battery leakage according to claim 3, characterized in that: The extrusion component (330) further includes a flipping electric core component (359), which is located between the extrusion fixing plate (326) and the movable bearing seat (334), and includes a plurality of rotating plates (335), at least two pairs of light rods (337) and a plurality of electric core clamping plates (338). The plurality of rotating plates (335) are connected to the movable bearing seat (334). When the movable bearing seat (334) rotates, it can drive the plurality of rotating plates (335) to rotate together. The other end of (334) is fixedly connected to the battery cell clamp (338); the two ends of the light rod (337) are respectively fixedly connected to the rotating plate (335); a plurality of the battery cell clamps (338) are sleeved on the light rod (337) and can slide on the light rod (337); when the plurality of the rotating plates (335) are subjected to thrust, the plurality of the battery cell clamps (338) are squeezed, and when the plurality of the rotating plates (335) are subjected to tension, the squeezed plurality of the battery cell clamps (338) are pulled apart.

5. The automatic detection device for battery leakage according to claim 4, characterized in that: The flip battery core component (359) also includes a plurality of buckles (339), and the plurality of buckles (339) include a first buckle (3391), a second buckle (3392), and a third buckle (3393) connected in sequence end to end; one end of the first buckle (3391) is fixedly connected to the battery core clamping plate (338) closest to the movable bearing seat (334), and the other end is open upward to form a recessed portion (3394), and a groove (3396) is provided at the bottom of the recessed portion (3394), and the groove (3396) is engaged with the battery core clamping plate (338); one end of the third buckle (3393) is connected to the plurality of rotating plates (335), and the other end is open downward to form a convex portion (3395); the second buckle (3392) is in an "S" shape, and has both the recessed portion (3394) and the convex portion (3395).

6. The automatic detection device for battery leakage according to claim 5, characterized in that: The auxiliary rotating component (340) comprises 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 an auxiliary force for flipping the flipping electric core component (359); a position sensor (362) is also provided on the auxiliary rotating cylinder (341) to detect whether the auxiliary rotating cylinder (341) is flipped into place.

7. The automatic detection device for battery leakage according to any one of claims 1 to 6, characterized in that: The extrusion rotation device also includes a reset member (370) and a lifting member (350); the lifting member (350) includes a lifting member (351) and a lifting cylinder (352); a pair of reset members (370) are respectively located on both sides of the lifting plate (322), and one end of each reset member (370) is fixedly connected to the lifting plate (322); the lifting member (351) is fixedly connected to the lifting plate (322); the lifting cylinder (352) is fixedly connected to the fixed plate (321), and an output end of the lifting cylinder (352) is fixedly connected to the lifting member (351); the lifting plate (322) can be moved up and down by the lifting member (350).

8. The automatic detection device for battery leakage according to claim 1, characterized in that: The pair of lower pressing plates (1126) are symmetrically located on both sides of the pair of side limiting plates (1121), and the short sides of the pair of lower pressing plates (1126) are arranged diagonally, and the short sides are away from the side limiting plates (1121).

9. A method for detecting a battery cell leakage using the automatic detection device for detecting a battery cell leakage according to any one of claims 1 to 8, characterized in that: The following steps are involved: The loading assembly (200) simultaneously clamps a plurality of the battery cells (800) and places them in a battery cell tray (110) on the loading assembly (200); The battery cell tray (110) drives the plurality of battery cells (800) to flow through the flow assembly (100) to the extrusion assembly (300) station; The extrusion rotating device moves downward, and the extrusion component (330) is located in the battery cell tray (110) to extrude the battery cell (800); The extrusion rotating device and the extruded battery cell (800) move upward; The squeezing component (330) and the auxiliary rotating component (340) turn the squeezed battery cell (800) upside down and keep it upside down for a certain period of time; The pressing component (330) and the auxiliary rotating component (340) flip the inverted battery core (800) back to the normal position; The extrusion rotating device and the returned battery cell (800) move downward; The pressing component (330) places the restored battery cell (800) back into the battery cell tray (110); The extrusion rotating device moves upward; The battery cell tray (110) drives the plurality of battery cells (800) that have been extruded to be transferred to the leak detection component (400) station through the transfer component (100); The leakage detection component (400) performs online detection of electrolyte leakage in the plurality of battery cells (800) after extrusion through an optical solution, and transmits the detection result to the blanking component (500); The battery cell tray (110) drives the plurality of battery cells (800) that have completed testing to be transferred to a material unloading station through the transfer assembly (100); The unloading station controls and clamps each of the battery cells (800) individually according to the detection result, and transports the plurality of battery cells (800) to different subsequent stations.

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