Full-automatic electrode plate separator for battery

Abstract

The application provides a full-automatic pole piece separator of winding battery cells, comprising: a winding core positioning assembly located on an arm of a manipulator; a winding core overturning and pressing roller assembly located on a T-shaped operation table flat plate, close to one end of the manipulator; a diaphragm winding assembly located on the T-shaped operation table flat plate, at the lower left side of the winding core overturning and pressing roller assembly; an outer diaphragm hot cutting assembly located on the other side of the T-shaped operation table flat plate; a diaphragm stripping assembly located below a T-shaped operation table vertical plate, at the other side of the diaphragm winding assembly; and a negative diaphragm separating assembly located on the T-shaped operation table vertical plate, above the left of the diaphragm winding assembly. The full-automatic pole piece separator of winding battery cells has a reasonable structure and is convenient to operate. The full-automatic pole piece separating method matched with the separator is automatically performed according to a flow, improves the automation degree, realizes accurate separation, and avoids injury to operators.

Description

TECHNICAL FIELD

[0001] The present application relates to a battery cell technology, in particular to a full-automatic electrode separation machine of a battery with a wound cell. BACKGROUND

[0002] The application of batteries has become increasingly popular, gradually expanding from small household appliances and electronic devices to large electric vehicles. In recent years, the rise of new energy vehicles has driven the development of battery technology. In these applications, batteries used in electric vehicles require large output energy and power, so the demand is large. With the large-scale use of electric vehicles, a large number of waste batteries will be generated.

[0003] When recycling lithium iron phosphate batteries, the battery needs to be cut open first, then the battery electrode is taken out of the battery, and then the positive and negative electrodes are separated. The current separation technology mainly separates by manual method, which requires high technical requirements for the operator, resulting in low work efficiency, and the waste gas generated during electrode separation also harms the environment and the health of employees.

[0004] In recent years, semi-automatic and full-automatic electrode separation devices have appeared, which have improved work efficiency to some extent and avoided harm to operators. However, these devices have low automation degree, which can easily lead to separation failure. Finally, these devices are mainly aimed at un-liquid-filled cell electrodes, and the application environment is limited, which is not suitable for large-scale use. At present, there is no mature technology for large-scale industrial production of electrode separation devices in China. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a full-automatic electrode separation device with flexibility and intelligence.

[0006] The present application provides a full-automatic electrode separation machine for wound cells, comprising: a winding core positioning assembly located on the arm of a manipulator; a winding core turnover pressure roller assembly located on one end of the T-shaped operation table flat plate close to the manipulator; a separator winding assembly located on the left lower side of the winding core turnover pressure roller assembly on the T-shaped operation table flat plate; an outer separator hot cutting assembly located on the other side of the T-shaped operation table flat plate; a separator stripping assembly located on the other side of the separator winding assembly below the T-shaped operation table vertical plate; and a negative separator separation assembly located above the separator winding assembly on the left side of the T-shaped operation table vertical plate.

[0007] The winding core positioning assembly comprises a spiral ladder screw motion assembly located in a drive box; a ball spline shaft located below the drive box; the spiral ladder screw motion assembly comprises a positive spiral ladder screw and a negative spiral ladder screw, and the left clamping arm and the right clamping arm are respectively connected with the positive spiral ladder screw and the negative spiral ladder screw; a winding core rotation servo motor is located below the other end of the negative spiral ladder screw and connected with the right clamping arm.

[0008] Further, the bottom of the left clamping arm comprises a left rotating shaft, and the bottom of the right clamping arm comprises a right rotating shaft.

[0009] Further, the roll core positioning assembly further comprises a gear set and a synchronous belt, and the rotating power generated when the ball spline shaft rotates is sequentially transmitted to the left clamping arm and the left rotating shaft.

[0010] The surface diaphragm hot cutting assembly comprises a cutting table placed on one end of the T-shaped operation table flat plate, a first suction cup located below the cutting table, a cutting vertical plate perpendicular to the cutting positioning table, and a hot cutting knife installed on the cutting vertical plate.

[0011] Further, the diaphragm stripping assembly comprises a diaphragm extrusion friction plate and a diaphragm stripping clamp jaw connected thereto.

[0012] Further, the diaphragm stripping assembly further comprises a belt transmission mechanism located below the diaphragm stripping clamp jaw.

[0013] The diaphragm winding assembly comprises a combined winding needle formed by two upper and lower pieces, a winding needle positioning mechanism located on the opposite side of the winding needle, and a blocking sleeve arranged on the winding needle positioning mechanism, which is first passed through when the winding needle moves linearly, and then inserted into the winding needle positioning mechanism.

[0014] The negative diaphragm separation assembly comprises a swing arm, a rotating shaft located at the center of the first supporting roller, a second suction cup located at the end of the swing arm, and a scraper located above the left side of the first supporting roller.

[0015] Further, the negative diaphragm separation assembly further comprises a spring-pressed negative scraper located above the left side of the diaphragm winding assembly.

[0016] Further, the negative diaphragm separation assembly further comprises a proximity inductive sensor.

[0017] Further, the negative diaphragm separation assembly further comprises a second supporting roller which can be obliquely lifted, translated and retracted.

[0018] Further, the negative diaphragm separation assembly further comprises a second suction cup swing arm assembly which rotates around the second supporting roller, for sucking the negative electrode head and rotating to separate the negative electrode head and the diaphragm.

[0019] The application also proposes a full-automatic pole piece separation method, which is applied to the above-mentioned full-automatic pole piece separation machine for winding cores, comprising:

[0020] The roll core positioning assembly fixes the position of the roll core;

[0021] The outer diaphragm hot cutting assembly cuts the surface diaphragm of the roll core;

[0022] The diaphragm stripping clamp clamps one head of the incision of the surface diaphragm, separates the roll core body, and obtains a multi-layered object formed by the outer diaphragm, the positive electrode sheet, the inner diaphragm and the negative electrode sheet;

[0023] The diaphragm stripping clamp clamps the other head of the incision, passes through the roll needle of the diaphragm winding assembly, and the roll needle passes through the surface diaphragm.

[0024] After the negative electrode sheet is exposed, the second suction disc is used to suck the negative electrode sheet;

[0025] The scraper and the supporting roller clamp the multi-layered object, and separate the negative electrode sheet;

[0026] When the diaphragm winding assembly winds the multi-layered object, the roll core overturning roller assembly overturns the roll core, and separates the inner diaphragm and the outer diaphragm.

[0027] After the diaphragm winding assembly is completed, the roll needle is retracted.

[0028] In summary, the winding core full-automatic electrode sheet separating machine has reasonable structure and convenient operation. All steps of the full-automatic electrode sheet separating method are automatically performed according to the flow, the degree of automation is improved, accurate separation is realized, and the harm to the operator is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A structure schematic diagram of the winding core is shown.

[0030] Figure 2 A structure diagram of the winding core full-automatic electrode sheet separating machine is shown.

[0031] Figure 3 A structure diagram of the winding core positioning assembly is shown.

[0032] Figure 4 A structure diagram of the surface diaphragm hot cutting assembly is shown.

[0033] Figure 5 A structure diagram of the diaphragm stripping assembly is shown.

[0034] Figure 6 A structure diagram of the negative diaphragm separating assembly is shown.

[0035] Figure 7 A structure diagram of the diaphragm winding assembly is shown.

[0036] Figure 8 A structure diagram of the roll core overturning roller assembly is shown.

[0037] Figure 9 A flow chart of the full-automatic electrode sheet separating method is shown. DETAILED DESCRIPTION

[0038] The following embodiments of the application will be illustrated by specific examples, and those skilled in the art can easily understand other advantages and effects of the application from the content disclosed in the specification.

[0039] Please refer to Figures 1 to 9 It should be understood that the structure, proportion, size, etc. shown in the drawings attached to the specification are only used to illustrate the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the defined conditions under which the application can be implemented, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects that can be produced by the application and the purposes that can be achieved, should still fall within the scope of the technology disclosed by the application. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" used in the specification are only for the convenience of clear description, and are not used to limit the scope in which the application can be implemented. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope in which the application can be implemented.

[0040] Figure 1 A structure diagram of a wound battery cell is shown.

[0041] The battery generally includes a shell housing 1 and a winding core 2. The winding core 2 includes an inner layer diaphragm 21, an outer layer diaphragm 22, a positive electrode sheet 23 and a negative electrode sheet 24. The inner layer diaphragm 21 is located between the positive electrode sheet 23 and the negative electrode sheet 24, the outer layer diaphragm is located on the other side of the positive electrode sheet 23, on the lower side of the negative electrode sheet 24, longer than the negative electrode sheet, and finally covers the negative electrode sheet 24. The present application mainly separates the negative electrode sheet 24 and the winding material composed of the inner layer diaphragm 21, the positive electrode sheet 23 and the outer layer diaphragm 22 by means of reverse winding, so as to realize the recycling of each component.

[0042] Figure 2 A structure diagram of a full-automatic electrode sheet separating machine for a wound battery cell of the application is shown.

[0043] The full-automatic pole piece separator 10 for winding battery cell comprises a winding core positioning assembly 11 located on the arm of the manipulator, which is used to fix the position of the winding core, so as to provide accurate operation position for subsequent operation; a winding core overturning and pressing roller assembly 16 located on the T-shaped operation table plate and close to one end of the manipulator, which is used to separate the inner layer separator and the outer layer separator of the winding core; a separator winding assembly 15 located on the T-shaped operation table plate and on the other side of the winding core overturning and pressing roller assembly 16, which is used to wind the multilayered object composed of the outer layer separator 22, the positive pole piece 3 and the inner layer separator 21; an outer layer separator hot cutting assembly 12 located on the other end of the T-shaped operation table plate, which is used to cut the surface layer separator of the winding core; a separator peeling assembly 13 located on the T-shaped operation table plate and on the other side of the separator winding assembly 15, which is used to separate the surface layer separator and the main body of the winding core and realize accurate positioning of the head of the surface layer separator; and a negative pole separator separating assembly 14 located above the separator winding assembly 15, which is used to separate the negative pole piece 4 and the outer layer separator 22.

[0044] Figure 3 The structure diagram of the winding core positioning assembly of the present application is shown.

[0045] The winding core positioning assembly 11 comprises a driving box, a trapezoidal screw motion assembly 111 located in the driving box and a ball spline shaft 114 located below the driving box; the trapezoidal screw motion assembly 111 comprises a left-handed trapezoidal screw and a right-handed trapezoidal screw; one side of the left clamping arm 112 and the right clamping arm 113 are respectively connected with the left-handed trapezoidal screw and the right-handed trapezoidal screw; a first servo motor 115 is located above one end of the counter-rotating trapezoidal screw; and a winding core rotating servo motor 116 is located below the other end of the counter-rotating trapezoidal screw and connected with the right clamping arm. Wherein, the other side of the left clamping arm 112 and the right clamping arm 113 is connected with the ball spline shaft 114 perpendicularly, and the bottom of the left clamping arm 112 further comprises a left rotating shaft 117, and the bottom of the right clamping arm 113 further comprises a right rotating shaft 118, which are used to provide the rotating position of the winding core.

[0046] In another embodiment, a gear set and a synchronous belt are further included, so that the rotating power generated when the ball spline shaft 114 rotates is sequentially transmitted to the left clamping arm 112 and the left rotating shaft 117.

[0047] In still another embodiment, a visual detection device and a displacement sensor are further included, the visual detection device is used to identify the external size of the winding core, and the displacement sensor is used to detect the position of the adhesive tape on the outer side of the outer layer separator 22, so as to provide accurate positioning for the grabbing of the manipulator. Preferably, the manipulator adjusts its own parameters such as the angle of the clamping jaw according to the position of the winding core.

[0048] Figure 4 The structure diagram of the surface layer separator hot cutting assembly of the present application is shown.

[0049] The surface layer diaphragm hot cutting assembly 12 includes a cutting table 121 placed on one end of the T-shaped operation table flat plate, a first suction cup 122 below the cutting table 121, a cutting knife 123 cutting the surface layer diaphragm of the roll core under the drive of a servo motor 124, and a cutting vertical plate 125 moving the cutting knife 123 to the roll core to facilitate positioning.

[0050] In another embodiment, the cutting vertical plate 125 is also provided with a core pressing cylinder, and under the action of the core pressing cylinder, the cutting vertical plate 125 is lowered to press the roll core, thereby avoiding movement of the roll core during cutting.

[0051] In yet another embodiment, the cutting knife 123 is a hot cutting knife, which cuts the surface layer diaphragm in a hot cutting manner.

[0052] Figure 5 The structure of the diaphragm stripping assembly of the present application is shown.

[0053] The diaphragm stripping assembly 13 includes a diaphragm extrusion friction plate 131 for pressing the surface layer diaphragm to cause the cut of the surface layer diaphragm to be extruded and wrinkled, and a diaphragm stripping clamp jaw 132 for clamping the surface layer diaphragm together with the diaphragm extrusion friction plate 131.

[0054] In another embodiment, the diaphragm stripping assembly 13 further includes a belt transmission mechanism 133 below the diaphragm stripping clamp jaw 132 for transmitting the power of the servo motor to the diaphragm stripping clamp jaw 132.

[0055] In yet another embodiment, the diaphragm stripping assembly 13 further includes a spring-pressed negative electrode scraper. Figure 7 The diaphragm winding assembly 15 is shown above the left upper side.

[0056] Figure 6 The structure of the negative electrode diaphragm separation assembly of the present application is shown.

[0057] The negative electrode diaphragm separation assembly 14 includes a swing arm 141, a rotating shaft 142 located at the center of the supporting roller, a supporting roller 143 located Figure 7 The diaphragm winding assembly is shown above the winding needle 151, which can vertically extend and retract in the direction perpendicular to the vertical plate of the T-shaped operation table. A second suction cup is located at the end of the swing arm 141, and a first separation knife 144 is located at the upper left side of the supporting roller 143, which moves obliquely upward and approaches the first separation knife 144.

[0058] In another embodiment, a proximity inductive sensor is further included for detecting the position of the head of the negative electrode.

[0059] In yet another embodiment, a diaphragm supporting roller that can be obliquely raised, translated and extended, and a second suction cup swing arm assembly that rotates around the diaphragm supporting roller are further included for sucking the head of the negative electrode and rotating to separate the negative electrode head and the diaphragm.

[0060] Figure 7 The structure diagram of the diaphragm winding assembly of the application is shown.

[0061] The diaphragm winding assembly 15 comprises a combined winding needle 151 formed by two pieces of upper and lower winding needles, a winding needle positioning mechanism 152 located on the opposite side of the winding needle, and a blocking sleeve 153 arranged on the winding needle positioning mechanism 152, which is first passed through the blocking sleeve and then inserted into the winding needle positioning mechanism 152 when the winding needle 151 moves linearly.

[0062] In another embodiment, the diaphragm winding assembly 15 further comprises a servo motor 154, which generates torque and speed to control the movement of the winding needle, thereby controlling the tension of the wound diaphragm.

[0063] In yet another embodiment, the diaphragm winding assembly 15 further comprises a telescopic air cylinder to control the linear movement of the winding needle 151, facilitating the insertion of the winding needle positioning mechanism 152.

[0064] Figure 8 The structure diagram of the winding core overturning and pressing roller assembly of the application is shown.

[0065] The winding core overturning and pressing roller assembly 16 comprises a second separating knife 161 and a pressing roller 162. The second separating knife 161 comprises a left separating knife and a right separating knife, and the pressing roller 162 comprises a left pressing roller and a right pressing roller, wherein the left separating knife and the left pressing roller are located on the same side, and the right separating knife and the right pressing roller are located on the same side.

[0066] Figure 9 The flowchart of the full-automatic pole piece separating method of the application is shown.

[0067] A full-automatic pole piece separating method applied to the full-automatic pole piece separating machine for winding cores, the working steps of which are as follows:

[0068] Step S1: The winding core positioning assembly on the manipulator fixes the position of the winding core after grabbing the winding core.

[0069] Specifically, the counter-rotating trapezoidal screw 111 is driven by the first servo motor 115 to move the left clamping arm 112 and the right clamping arm 113 in a mirror image manner, and the clamping arm is clamped under the constant torque generated by the first servo motor 115. The ball spline shaft 114 is driven to rotate by the rotating servo motor 116, and the rotating power generated by the rotating servo motor 116 is transmitted to the left clamping arm 112 through the gear set and the synchronous belt, and then transmitted to the left rotating shaft 117 and the right rotating shaft 118.

[0070] Conversely, when the rotary servo motor 116 drives the right rotating shaft 118 to rotate, the power is transmitted to the left rotating shaft 117 through the ball spline shaft 114, so that the rotary servo motor 116 controls the left rotating shaft 117 and the right rotating shaft 118 at the same time, so that the left rotating shaft 117 and the right rotating shaft 118 are synchronized, and the tension during unwinding can also be controlled. The origin of the left rotating shaft 117 and the right rotating shaft 118 is detected to obtain the rotation position of the core.

[0071] Further, the visual detection device identifies the outer dimensions of the core, the displacement sensor detects the position of the adhesive tape on the outside of the outer separator 22, and the parameters of the mechanical hand are adjusted to provide accurate positioning for the grabbing of the mechanical hand.

[0072] Step S2: The outer separator hot cutting assembly cuts the surface separator of the core.

[0073] Specifically, the mechanical hand clamps the core to the hot cutting station and places it on the cutting table 121; the first suction cup 122 below the cutting table 121 sucks the core to fix it, thereby achieving positioning; under the drive of the servo motor 124, the cutting vertical plate 125 moves horizontally to the core, and the cutter 123 on the cutting vertical plate 125 descends above the core under the drive of the cylinder, cutting the surface separator.

[0074] Further, the cutter 123 is a hot cutter, which cuts the surface separator in a hot cutting manner. By melting the surface separator through high temperature, the cutting depth of the cutter can be accurately controlled, thereby avoiding misoperation on the negative plate.

[0075] Step S3: The separator stripping clamping jaw clamps one head at the cut of the surface separator, so as to separate the core body and obtain a multi-layered object formed by the outer separator, the positive plate, the inner separator and the negative plate.

[0076] Specifically, the mechanical hand adjusts the position of the core whose surface separator has been cut, so that the cut of the surface separator is opposite to the separator extrusion friction plate 131. Under the drive of the servo motor, the separator extrusion friction plate 131 presses the surface separator, so that the cut of the surface separator is extruded and wrinkled. At the same time, under the drive of the servo motor, the separator stripping clamping jaw 132 reaches the surface of the core and clamps the surface separator.

[0077] Further, when the separator extrusion friction plate 131 presses the surface separator, the mechanical hand drives the core to move upward, so that the extrusion is more sufficient, thereby making the cut of the surface separator form the edge folding and wrinkling more quickly.

[0078] The cut of the surface separator forms two heads of the surface separator, the separator stripping clamp jaw 132 pulls one head of the separator to move horizontally, cooperates with the winding core on the winding core positioning assembly 11 to move clockwise under the driving of the servo motor, so that the surface separator from the cut to the tail is separated from the winding core; at the same time, a multi-layered object formed by the outer separator, the positive plate, the inner separator and the negative plate is obtained. Then the separated surface separator is thrown by the clamp jaw into the positive plate conveying line directly below the winding needle of the separator winding assembly, so that the surface separator is conveyed out of the winding battery core automatic plate separating machine.

[0079] Step S4: the separator stripping clamp jaw clamps the other head at the cut, passes through the winding needle of the separator winding assembly, and the winding needle penetrates the surface separator.

[0080] Specifically, the separator stripping clamp jaw 132 clamps the other head at the cut of the surface separator and moves horizontally. Under the action of the telescopic air cylinder 154, the other head at the cut of the surface separator passes through the winding needle 151, and the winding needle 151 extends to the winding needle positioning mechanism 152 to clamp the surface separator.

[0081] Step S5: after the negative plate exposes the head, the second suction cup sucks the negative plate.

[0082] Specifically, the manipulator clamps the multi-layered object, reversely rotates under the action of the constant torque, and approaches the left pressure roller and the right pressure roller of the winding core turnover pressure roller assembly upward. The left pressure roller and the right pressure roller extend under the action of the air cylinder and support the multi-layered object. The multi-layered object maintains a constant tension under the tensioning action of the separator stripping assembly and the winding core positioning assembly, and the negative plate exposes the head under the traction of the separator stripping clamp jaw.

[0083] The switch sensor detects the position of the head of the negative plate. Under the driving of the servo motor, the swing arm 141 rotates to move, so that the head of the negative plate and the surface separator are separated. The swing arm 141 is reset under the action of the second suction cup, and the second suction cup sucks the negative plate.

[0084] Step S6: the multi-layered object is clamped by the scraper, the left pressure roller and the right pressure roller, and the negative plate is separated.

[0085] Specifically, the winding core turnover pressure roller assembly translates obliquely upward, drives the multi-layered object and the negative plate on the second suction cup to approach the first separation knife 144 of the negative separator separation assembly 14. Under the action of the spring, the first separation knife 144 tightly abuts against the left pressure roller and the right pressure roller of the winding core turnover pressure roller assembly, clamps the multi-layered object, the second suction cup is released, and the negative plate falls above the scraper.

[0086] Step S7: the negative plate is separated from the multi-layered object by the scraper of the separator stripping assembly 13.

[0087] Specifically includes: the jaw of the diaphragm stripping assembly 13 is opened, and the diaphragm head is separated. The winding needle 151 of the diaphragm winding assembly 15 rotates to perform a winding motion, and the winding core positioning assembly 11 drives the winding core to perform a unwinding motion, so that the multi-layered object separated from the negative plate is wound into a cylindrical shape. During the winding process, the negative plate separates the multi-layered object through the scraper of the diaphragm stripping assembly 13 and falls into the lower collecting belt conveying line to flow out of the device.

[0088] Step S8: When the diaphragm winding assembly winds the multi-layered object, the winding core turnover roller assembly turns over the winding core, separates the inner diaphragm and the outer diaphragm, and realizes reverse winding.

[0089] Specifically includes: after the diaphragm winding assembly 15 winds to a certain length, the mechanical hand throws the remaining winding core into the storage bin below the winding core turnover roller assembly 16 through the winding core positioning assembly 11. The pressure roller cylinder of the winding core turnover roller assembly 16 acts to clamp the multi-layered object between the left pressure roller and the right pressure roller. The diaphragm winding assembly 15 continues to wind the multi-layered object. During the winding process, the winding core is turned over through the left pressure roller and the right pressure roller, and the inverted conical surface below the left pressure roller and the right pressure roller. Under the action of the winding needle 151, the diaphragm head pulls the main body of the winding core upward to make it move upward, and the left separating knife and the right separating knife cut the winding core to separate the inner and outer rings of the winding core, realizing the reverse winding action.

[0090] Step S9: After the diaphragm winding assembly 7 completes reverse winding, the winding needle is retracted, and the cylindrical multi-layered object after reverse winding falls onto the output line and flows out of the device. The cylindrical multi-layered object is a combination of the outer diaphragm, the positive plate and the inner diaphragm.

[0091] Specifically includes: after winding is completed, the winding needle 151 is pulled out from the winding needle positioning mechanism 152. The winding needle 151 is reset to the initial position, and the surface diaphragm and the multi-layered object are separated from the winding needle 151 under the action of the blocking sleeve 153.

[0092] The full-automatic electrode plate separating machine for winding the core has reasonable structure and is convenient to operate. All steps of the full-automatic electrode plate separating method are automatically performed according to the flow, the degree of automation is improved, accurate separation is realized, and the harm to the operator is avoided.

[0093] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A full-automatic pole piece separator for winding an electric core, characterized in that, The application relates to a multi-layer material separating device. The device comprises a roll core positioning assembly on the arm of a manipulator, a roll core overturning and pressing roller assembly on one end of a T-shaped operation table flat plate close to the manipulator, the roll core overturning and pressing roller assembly being used for clamping the multi-layer material and overturning the roll core, and then separating the inner and outer layers of the roll core by using a second separating cutter; a diaphragm winding assembly on the left lower side of the roll core overturning and pressing roller assembly on the T-shaped operation table flat plate; a surface diaphragm hot cutting assembly on the other side of the T-shaped operation table flat plate; a diaphragm stripping assembly on the other side of the diaphragm winding assembly below a T-shaped operation table vertical plate, the diaphragm stripping assembly comprising a diaphragm extrusion friction piece and a diaphragm stripping clamp jaw connected with the diaphragm extrusion friction piece; after the surface diaphragm hot cutting assembly cuts the surface diaphragm, the diaphragm stripping clamp jaw clamps one head of the cut surface diaphragm, the roll core positioning assembly moves clockwise under the drive of a servo motor, so that the surface diaphragm from the cut to the tail is separated from the roll core, the diaphragm stripping clamp jaw clamps the other head of the cut surface diaphragm, the other head passes through a winding needle, and the winding needle clamps the surface diaphragm when the winding needle extends to the roll needle positioning mechanism; a negative diaphragm separating assembly is located on the left upper side of the diaphragm winding assembly on the T-shaped operation table vertical plate, and comprises a swing arm, a rotating shaft located at the center of a first supporting roller, a second suction disc located at the end of the swing arm, a first separating cutter located on the left upper side of the first supporting roller, a second supporting roller and a second suction disc swing arm assembly rotating around the second supporting roller; under the traction of the diaphragm stripping clamp jaw, the multi-layer material exposes a head of a negative plate, the second suction disc adsorbs the negative plate, the second suction disc swing arm assembly rotates to separate the head of the negative plate and the inner layer diaphragm, the roll core overturning and pressing roller assembly translates obliquely upwards, drives the multi-layer material and the negative plate on the second suction disc to approach the first separating cutter of the negative diaphragm separating assembly, the first separating cutter tightly contacts the left pressing roller and the right pressing roller of the roll core overturning and pressing roller assembly and clamps the multi-layer material, the second suction disc is released, so that the negative plate falls above the first separating cutter, the separation of the negative plate is realized, and the winding needle of the diaphragm winding assembly rotates to perform a winding motion, and the roll core positioning assembly drives the roll core to perform an unwinding motion, so that the multi-layer material from which the negative plate is separated is wound into a cylindrical shape.

2. The full-automatic electrode tab separator for wound battery cells according to claim 1, characterized in that, The roll core positioning assembly comprises a spiral ladder type screw rod motion assembly in a driving box; a ball spline shaft below the driving box; the spiral ladder type screw rod motion assembly comprises a positive spiral ladder type screw rod and a negative spiral ladder type screw rod, and a left clamping arm and a right clamping arm are vertically connected with the positive spiral ladder type screw rod and the negative spiral ladder type screw rod respectively; a roll core rotating servo motor below the other end of the negative spiral ladder type screw rod and connected with the right clamping arm.

3. The full-automatic electrode tab separator for wound battery cells according to claim 2, characterized in that, The bottom of the left clamping arm comprises a left rotating shaft, and the bottom of the right clamping arm comprises a right rotating shaft.

4. The full-automatic electrode separation machine for winding battery cell according to claim 3, characterized in that, The roll core positioning assembly further comprises a gear set and a synchronous belt, and the rotating power generated when the ball spline shaft rotates is transmitted to the left clamping arm and the left rotating shaft in sequence.

5. The full-automatic electrode separation machine for winding battery cell according to claim 1, characterized in that, The surface diaphragm hot cutting assembly comprises a cutting table placed on one end of the T-shaped operation table flat plate; a first suction disc below the cutting table; a cutting vertical plate vertically cutting the positioning table; and a hot cutting cutter installed on the cutting vertical plate.

6. The full-automatic electrode separation machine for winding battery cell according to claim 1, characterized in that, The diaphragm stripping assembly further comprises a belt transmission mechanism below the diaphragm stripping clamp jaw.

7. The full-automatic electrode separation machine for winding battery cell according to claim 1, characterized in that, The diaphragm winding assembly comprises a combined winding needle formed by two pieces, a winding needle positioning mechanism on the opposite side of the winding needle, and a blocking sleeve arranged on the winding needle positioning mechanism, which is first passed through when the winding needle moves linearly and then inserted into the winding needle positioning mechanism.

8. The full-automatic electrode separation machine for winding battery cell according to claim 1, characterized in that, The negative diaphragm separation assembly further comprises a proximity inductive sensor.

9. The full-automatic electrode separation machine for winding battery cell according to claim 1, characterized in that, The negative diaphragm separation assembly further comprises a second supporting roller that can be obliquely lifted, translated and retracted.

10. A full-automatic electrode piece separation method applied to the full-automatic electrode piece separation machine for winding cores according to any one of claims 1-9, comprising: a winding core positioning assembly for fixing the position of the winding core; a surface diaphragm hot cutting assembly for cutting the surface diaphragm of the winding core; a diaphragm stripping clamp jaw for clamping one head at the cut of the surface diaphragm, so as to separate the main body of the winding core and obtain a multi-layered object formed by the surface diaphragm, the positive electrode piece, the inner diaphragm and the negative electrode piece; the diaphragm stripping clamp jaw clamps the other head at the cut, passes through the winding needle of the diaphragm winding assembly, the winding needle passes through the surface diaphragm, the winding needle clamps the surface diaphragm when it extends to the winding needle positioning mechanism, and the multi-layered object is pulled by the diaphragm stripping clamp jaw, so that the negative electrode piece is exposed; after the negative electrode piece is exposed, the second suction cup adsorbs the negative electrode piece, the swing arm rotates to separate the negative electrode head and the inner diaphragm, the winding core overturning pressure roller assembly is obliquely translated upwards, the multi-layered object and the negative electrode piece on the second suction cup are driven to approach the first separation knife of the negative diaphragm separation assembly, the first separation knife tightly contacts the left pressure roller and the right pressure roller of the winding core overturning pressure roller assembly and clamps the multi-layered object, the second suction cup is released, so that the negative electrode piece falls above the first separation knife and is separated; the winding needle of the diaphragm winding assembly rotates to perform winding movement, and the winding core positioning assembly drives the winding core to perform unwinding movement, so as to wind the multi-layered object into a cylindrical shape after the negative electrode piece is separated; when the diaphragm winding assembly winds the multi-layered object, the mechanical hand throws the remaining winding core into the storage bin below the winding core overturning pressure roller assembly, the winding core overturning pressure roller assembly overturns the winding core, and the second separation knife is used to separate the inner and outer rings of the winding core after the winding core is overturned; after the diaphragm winding assembly is completed, the winding needle is retracted.

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