Volume slicing cache stability control method and device

Abstract

The present invention discloses a method and device for controlling the stabilization of a cutting and reeling buffer. A fourth buffer area is provided between the second main drive and the third main drive of a cell electrode cutting and reeling machine. When the third buffer area needs to be adjusted, the adjustment amount of the third buffer area is calculated according to the length of a single cell, the actual length of the path from the electrode cutting position to the gluing position and the number of floating rollers in the third buffer area. The buffer amount of the third buffer area is adjusted to the corresponding adjustment amount, and then the third main drive and the second main drive are controlled to start or stop within a preset time difference. The floating rollers in the second buffer area for storing the battery cells that have completed gluing can be maintained within a certain fluctuation range, and the floating rollers in the second buffer area will not be pulled to the maximum limit or the minimum limit. The technical problem that the cutting and reeling machine is prone to extreme fluctuations in the second buffer area, which affects the running speed stability of the cutting and reeling machine, is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery core processing technology, and in particular to a coil cutting and buffering stability control method and device. Background Art

[0002] The cell electrode cutting and winding machine first cuts the electrode sheet at the laser cutting station, then glues it through the path, and then winds the electrode sheet into shape at the winding station. During the operation of the cutting and winding machine, the winding part needs to be started and stopped when switching between stations, and the glue sticking part also needs to be started and stopped when glue sticking. If the speed start and stop timing of the main drive of the winding part and the main drive of the glue sticking part are inconsistent, it will cause the second buffer area used to store the glued battery cells to fluctuate, such as Figure 3 As shown in the figure, if the glue main drive is started after the winding part is accelerated, the cache floating roller of the second cache area will be pulled to the minimum limit. If the glue main drive is started after the acceleration of the glue main drive, the winding main drive will be started, the cache floating roller will be pulled to the maximum limit. Figure 4 The extreme fluctuation of the second buffer area will affect the speed stability of the cutting and rolling machine. Therefore, it is necessary to take measures to control the fluctuation range of the second buffer area. Summary of the Invention

[0003] The present invention provides a method and device for controlling the stability of a coil cutting and buffering process, which are used to solve the technical problem that an integrated coil cutting machine is susceptible to extreme fluctuations in a second buffer area, thereby affecting the stability of the operating speed of the integrated coil cutting machine.

[0004] In view of this, a first aspect of the present invention provides a method for stabilizing a cutting and buffering process, which is applied to a cell electrode cutting and winding machine. A third buffer area is provided between a second main drive and a third main drive of the cell electrode cutting and winding machine. The second main drive is used to control a gluing speed, and the third main drive is used to control a winding speed. The method for stabilizing a cutting and buffering process includes:

[0005] S1. Determine whether the third buffer area needs to be adjusted. If so, jump to step S2; otherwise, jump to step S4.

[0006] S2. Calculate the adjustment amount of the third buffer zone based on the length of a single battery cell, the actual length of the path from the electrode cutting position to the glue application position, and the number of floating rollers in the third buffer zone;

[0007] S3, adjusting the cache capacity of the cache area according to the adjustment amount;

[0008] S4. Control the third main drive and the second main drive to start or stop within a preset time difference.

[0009] Optionally, step S1 includes:

[0010] Determine whether the battery cell parameters are replaced. If so, the third buffer area needs to be adjusted, and jump to step S2. Otherwise, the third buffer area does not need to be adjusted, and jump to step S4.

[0011] Optionally, the calculation formula of the adjustment amount of the third buffer area is:

[0012]

[0013] Among them, L2 is the adjustment amount of the third buffer area, L is the length of a single battery cell, L1 is the actual length of the path from the electrode cutting position to the glue sticking position, and n is the number of floating rollers in the third buffer area.

[0014] Optionally, the preset time difference does not exceed 0.8s.

[0015] Optionally, step S4 includes:

[0016] S41. Calculate the total winding time of a single battery cell based on the winding time and auxiliary winding time of the single battery cell;

[0017] S42, determining a second main drive speed according to the total winding time of a single battery cell;

[0018] S43, controlling the third main drive and the second main drive to start within a preset time difference;

[0019] S44, controlling the third main drive to operate at the third main drive speed, and the second main drive to operate at the second main drive speed;

[0020] S45 , controlling the third main drive and the second main drive to stop within a preset time difference.

[0021] Optionally, step S44 further includes:

[0022] Determining a first main drive speed for controlling the laser cutting speed according to the total winding time of a single battery cell;

[0023] Control the first main drive to run at the first main drive speed.

[0024] Optionally, step S42 includes:

[0025] Calculate the glue-taping running time based on the total winding time of a single battery cell;

[0026] The second main drive speed is calculated based on the glue running time.

[0027] Optionally, the gluing operation time is calculated based on the total winding time of a single battery cell, including:

[0028] Determine the target number of glue sticking for a single cell. If the target number of glue sticking for a single cell is one layer, the formula for calculating the glue sticking time is:

[0029] T3=T-T4

[0030] Among them, T3 is the gluing operation time of a single battery cell, T is the total winding time of a single battery cell, and T4 is the gluing time;

[0031] If the target number of glue application for a single cell is two layers, the calculation formula for the glue application running time is:

[0032] T3=T-T5-T6-T7

[0033] Among them, T5 is the time for applying the first layer of glue, T6 is the time from the position of the first layer of glue to the position of the second layer of glue, and T7 is the time for applying the second layer of glue.

[0034] Optionally, the second main drive speed is calculated according to the glue application running time, including:

[0035] Calculate the second main drive theoretical speed based on the rubber running time;

[0036] The second main drive speed is calculated according to the second main drive theoretical speed.

[0037] Optionally, the calculation formula for the second main drive speed is:

[0038] V6=V5×K2

[0039] K2=1-(PrePos2-Modpos2)×0.0003

[0040] Among them, V6 is the second main drive speed, V5 is the second main drive theoretical speed, K2 is the second speed adaptive coefficient, PrePos2 is the current position of the floating roller in the second buffer area, the second buffer area is used to store the battery cells that have completed gluing, Modpos2 is the middle position of the floating roller in the second buffer area, and 0.0003 is the proportional constant.

[0041] A second aspect of the present invention provides a cutting and winding buffer stabilization control device, which is applied to a cell electrode cutting and winding machine. A third buffer area is provided between the second main drive and the third main drive of the cell electrode cutting and winding machine. The second main drive is used to control the gluing speed, and the third main drive is used to control the winding speed. A buffer area is provided between the gluing main drive and the winding main drive of the cell electrode cutting and winding machine. The cutting and winding buffer stabilization control device includes:

[0042] A judging module, configured to judge whether the third buffer area needs to be adjusted;

[0043] an adjustment amount calculation module, configured to calculate the adjustment amount of the third buffer area if adjustment of the third buffer area is required, based on the length of a single battery cell, the actual length of the path from the electrode cutting position to the glue application position, and the number of floating rollers in the third buffer area;

[0044] An adjustment module, configured to adjust a buffer size of the buffer area according to an adjustment amount;

[0045] The main drive start-stop control module is used to control the third main drive and the second main drive to start or stop within a preset time difference.

[0046] As can be seen from the above technical solutions, the volume slicing cache stability control method and device provided by the present invention have the following advantages:

[0047] The present invention provides a method for controlling the stable cache of a cutting coil, in which a fourth cache area is arranged between the second main drive and the third main drive of the battery cell electrode cutting and winding machine, and when the third cache area needs to be adjusted, the adjustment amount of the third cache area is calculated according to the length of a single battery cell, the actual length of the path from the electrode cutting position to the gluing position and the number of floating rollers in the third cache area, the cache amount of the third cache area is adjusted to the corresponding adjustment amount, and then the third main drive and the second main drive are controlled to start or stop within a preset time difference, so that the floating rollers of the second cache area for storing battery cells that have completed gluing can be maintained within a certain fluctuation range, and the floating rollers of the second cache area will not be pulled to the maximum limit or the minimum limit, thereby solving the technical problem that the cutting and winding machine is prone to extreme fluctuations in the second cache area, which affects the operating speed stability of the cutting and winding machine.

[0048] The volume slicing cache stabilization control device provided by the present invention is used to execute the volume slicing cache stabilization control method provided by the present invention. Its principles and technical effects are the same as those of the volume slicing cache stabilization control method provided by the present invention, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 A flow chart of a volume slicing cache stability control method provided in the present invention;

[0051] Figure 2 This is a schematic structural diagram of the battery cell electrode sheet cutting and winding machine provided in the present invention;

[0052] Figure 3 This is a speed and cache comparison diagram corresponding to the battery cell electrode sheet cutting and winding machine provided by the present invention, in which the third main drive is started first and the second main drive is started later;

[0053] Figure 4This is a speed and cache comparison diagram corresponding to the second main drive starting first and the third main drive starting later in the battery cell electrode sheet cutting and winding machine provided by the present invention;

[0054] Figure 5 A speed and cache comparison diagram corresponding to the simultaneous activation of the third main drive and the second main drive of the battery cell electrode cutting and winding machine provided by the present invention;

[0055] Figure 6 A schematic diagram of a cycle of processing a single battery cell by the winding machine provided in the present invention;

[0056] Figure 7 The figure is a schematic structural diagram of a volume slicing and buffering stabilization control device provided in the present invention. DETAILED DESCRIPTION

[0057] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0058] For easier understanding, see Figure 1 The present invention provides an embodiment of a method for stabilizing a cutting buffer. The method is applied to a cell electrode cutting and winding machine. A third buffer is provided between a second main drive and a third main drive of the cell electrode cutting and winding machine. The second main drive is used to control a gluing speed, and the third main drive is used to control a winding speed. The method comprises:

[0059] Step 101 : Determine whether the third buffer area needs to be adjusted. If so, jump to step 102 ; otherwise, jump to step 104 .

[0060] It should be noted that the cache capacity of the third buffer area set between the second main drive and the third main drive needs to be adjusted according to the actual cutting scenario. Whether the cache capacity of the third buffer area needs to be adjusted is based on whether the parameters of the battery cell used for cutting have changed, such as the model, size, shape and other parameters. If the parameters of the battery cell for cutting are changed, the cache capacity of the third buffer area needs to be adjusted. If the battery cell parameters have not changed, the cache capacity of the third buffer area does not need to be adjusted.

[0061] Step 102: Calculate the adjustment amount of the third buffer area according to the length of a single battery cell, the actual length of the path from the electrode cutting position to the glue application position, and the number of floating rollers in the third buffer area.

[0062] It should be noted that the structure of the battery cell electrode cutting and winding machine is as follows Figure 2 As shown, the film is unwound by the unwinding motor, passes through the unwinding buffer, the first main drive to control laser cutting, the first buffer area, pole piece gluing, the second buffer area, the third buffer area, the third main drive, the tension swing rod, the length measuring encoder, the film feeding, and then reaches the winding needle for winding. Under the action of the unwinding motor, the unwound battery cell pole piece strip is unwound at a constant linear speed during the laser cutting process, passes through the unwinding buffer to reach the laser cutting position for pole piece cutting and forming. The laser cutting speed is controlled by the first main drive. To ensure the laser cutting effect, the linear speed of the first main drive for laser cutting must be stable. After the laser cutting is completed, the film is stored in the first buffer area. The purpose of the first buffer area is to allow laser cutting when the previous pole piece gluing is paused. The second main drive is the main drive for controlling the gluing speed. The second main drive is positioned according to the planned speed. The sum of the gluing positioning time and the gluing time is the beat time of a single battery cell. In order to solve the problem of not affecting the winding of the winding needle during the gluing process, the second buffer area is designed. During the winding process, to ensure buffer stability and maintain consistent timing, the winding needle (i.e., the winding head) must synchronize adhesive application with the change of stations. A third buffer area is also designed to adjust the film length. The winding section's third main drive and tension swing arm provide optimal control of winding speed and tension. A length encoder detects the length and speed of the winding material. The film feed mechanism delivers the material to the winding needle for winding. Process corrections 1, 2, and 3 ensure that the material remains in a fixed position during movement.

[0063] In the embodiment of the present invention, the adjustment amount of the third buffer area is calculated based on the length of a single battery cell, the actual length of the path from the electrode cutting position to the glue application position, and the number of floating rollers in the third buffer area. The specific calculation formula for the adjustment amount of the third buffer area is:

[0064]

[0065] Among them, L2 is the adjustment amount of the third buffer area, L is the length of a single battery cell, L1 is the actual length of the path from the electrode cutting position to the glue sticking position, L1 corresponds to the length when the manual adjustment buffer is at position 0, and n is the number of floating rollers in the third buffer area.

[0066] Step 103: Adjust the buffer size of the buffer area according to the adjustment amount.

[0067] It should be noted that after the adjustment amount of the third buffer area is calculated, the buffer amount of the buffer area is adjusted according to the adjustment amount.

[0068] Step 104: Control the third main drive and the second main drive to start or stop within a preset time difference.

[0069] It should be noted that if the buffer amount of the buffer area does not need to be adjusted, the third main drive and the second main drive are directly controlled to start or stop within the preset time difference. If the buffer amount of the buffer area needs to be adjusted, the third main drive and the second main drive are controlled to start and stop at the same time after adjusting the third buffer area according to the adjustment amount. The start time and stop time of the third main drive and the second main drive cannot exceed the preset time difference. The floating roller of the second buffer area can be maintained in a certain range of fluctuation, such as Figure 5 Specifically, the preset time difference does not exceed 0.8s.

[0070] The present invention provides a method for controlling the stable buffering of cutting and winding, in which a buffer area is provided between the gluing main drive and the winding main drive of the cell electrode cutting and winding machine, and when the fourth buffer area needs to be adjusted, the adjustment amount of the fourth buffer area is calculated according to the length of a single cell, the actual length of the path from the electrode cutting position to the gluing position and the number of floating rollers in the fourth buffer area, the buffer amount of the buffer area is adjusted to the corresponding adjustment amount, and then the third main drive and the second main drive are controlled to start or stop within a preset time difference, so that the floating roller of the third buffer area can be maintained within a certain fluctuation range, and the floating roller of the third buffer area will not be pulled to the maximum limit or the minimum limit, thereby solving the technical problem that the cutting and winding machine is prone to extreme fluctuations in the third buffer area, thereby affecting the running speed stability of the cutting and winding machine.

[0071] In one embodiment, step 104 specifically includes the following steps:

[0072] Step 1041: Calculate the total winding time of a single battery cell according to the winding time and the auxiliary winding time of the single battery cell.

[0073] It should be noted that the time it takes for a winding machine to process a single battery cell includes winding time and auxiliary winding time. The auxiliary winding time includes finishing time, film joining time, needle threading time, and diaphragm cutting time. If the winding head of the winding machine has more than one station, the auxiliary winding time should also include station change time. The winding time is determined according to the specific application scenario, and usually includes winding acceleration time, winding deceleration time, and may also include winding uniform speed time. Preferably, Figure 6 As shown, the winding time of a single battery cell includes pre-winding acceleration time, pre-winding uniform speed time, normal winding acceleration time, normal winding uniform speed time, normal winding deceleration time, follow-up uniform speed time and follow-up deceleration time. Therefore, the calculation formula for the winding time of a single battery cell is:

[0074] T1=t 11 +t 12 +t 13 +t 14 +t 15 +t 16 +t 17

[0075] Among them, T1 is the winding time of a single battery cell, t 11 is the pre-roll acceleration time, t 12 is the pre-roll uniform speed time, t 13 is the normal winding acceleration time, t 14 is the normal winding uniform speed time, t 15 is the normal winding deceleration time, t 16 is the time for catching up with uniform speed, t 17 To catch up the deceleration time.

[0076] The winding auxiliary time can be represented by T2.

[0077] Therefore, the total winding time T of a single battery cell is: T=T1+T2.

[0078] Step 1042: Determine a second main drive speed according to the total winding time of a single battery cell.

[0079] It should be noted that there are two possible scenarios for glue application: one requiring only one layer of glue, and the other requiring two layers of glue. Therefore, for both glue application scenarios, the glue application time is calculated based on the total winding time of a single battery cell.

[0080] Specifically, if the target number of glue application for a single cell is one layer, the calculation formula for the glue application running time is:

[0081] T3=T-T4

[0082] Among them, T3 is the gluing operation time of a single battery cell, T is the total winding time of a single battery cell, and T4 is the gluing time.

[0083] If the target number of glue application for a single cell is two layers, the calculation formula for the glue application running time is:

[0084] T3=T-T5-T6-T7

[0085] Among them, T5 is the time for applying the first layer of glue, T6 is the time from the position of the first layer of glue to the position of the second layer of glue, and T7 is the time for applying the second layer of glue.

[0086] The second main drive speed can be calculated based on the gluing operation time. Specifically, the second main drive theoretical speed V5 is first calculated based on the gluing operation time, and then the second main drive speed V6 is calculated based on the second main drive theoretical speed V5. The second main drive theoretical speed V5 can be calculated based on the length L of a single battery cell and the gluing operation time T3 of a single battery cell using the Omron HC_HighSpeedcontro function module. In order to eliminate the cumulative deviation of the third buffer area during operation, a speed adaptation coefficient is also superimposed, which is recorded as the second speed adaptation coefficient K2. The calculation formula of the second speed adaptation coefficient K2 is:

[0087] K2=1-(PrePos2-Modpos2)×0.0003

[0088] Wherein, PrePos2 is the current position of the floating roller in the third buffer area, Modpos2 is the middle position of the floating roller in the third buffer area, and 0.0003 is the proportional constant.

[0089] Therefore, the calculation formula of the second main drive speed V6 is:

[0090] V6=V5×K2.

[0091] Step 1043: Control the third main drive and the second main drive to start within a preset time difference.

[0092] Step 1044: Control the third main drive to run at the third main drive speed, and control the second main drive to run at the second main drive speed.

[0093] It should be noted that after the winding main drive and the gluing main drive are started, they run according to their respective actual operating speeds.

[0094] Step 1045: Control the third main drive and the second main drive to stop within a preset time difference.

[0095] In one embodiment, when executing step 1044, a first main drive speed for controlling the laser cutting speed may be determined based on the total winding time of a single battery cell, and the first main drive may be controlled to operate at the first main drive speed. Specifically, assuming the length of a single battery cell is L, the theoretical laser cutting speed V1 may be calculated as:

[0096]

[0097] In order to eliminate the accumulated deviation of the laser cache during operation, a speed adaptation coefficient is often superimposed, which is recorded as the first speed adaptation coefficient K1. The calculation formula of the first speed adaptation coefficient K1 is:

[0098] K1=1-(PrePos1-Modpos1)×0.03

[0099] The first main drive speed is recorded as V2, and the calculation formula of the first main drive speed V2 is:

[0100] V2=V1×K1.

[0101] Since there will be a joint part in the electrode material strip in the actual application scenario, when the joint passes the laser cutting position, the laser needs to increase the power and reduce the speed to cut off the joint. Therefore, when the joint is detected, it is often necessary to switch the linear cutting speed, and the linear cutting speed is set to V3 = 300mm / s.

[0102] Therefore, when the non-joined pole piece strip is at the laser position, the laser main drive control is performed according to the first main drive speed V2 of laser cutting; when the joined pole piece strip is at the laser position, the laser main drive control is performed according to the cutting linear speed V3 = 300mm / s.

[0103] For easier understanding, see Figure 7 The present invention provides an embodiment of a slitting and buffering stabilization control device. A third buffer area is provided between the second main drive and the third main drive of the cell electrode slitting and winding machine. The second main drive is used to control the gluing speed, and the third main drive is used to control the winding speed. The slitting and buffering stabilization control device includes:

[0104] A judging module, configured to judge whether the third buffer area needs to be adjusted;

[0105] an adjustment amount calculation module, configured to calculate the adjustment amount of the third buffer area if adjustment of the third buffer area is required, based on the length of a single battery cell, the actual length of the path from the electrode cutting position to the glue application position, and the number of floating rollers in the third buffer area;

[0106] An adjustment module, configured to adjust a buffer size of the buffer area according to an adjustment amount;

[0107] The main drive start-stop control module is used to control the third main drive and the second main drive to start or stop within a preset time difference.

[0108] The judgment module is specifically used to judge whether the battery cell parameters are replaced. If so, the third buffer area needs to be adjusted; otherwise, the third buffer area does not need to be adjusted.

[0109] The calculation formula for the adjustment amount of the third buffer area is:

[0110]

[0111] Among them, L2 is the adjustment amount of the third buffer area, L is the length of a single battery cell, L1 is the actual length of the path from the electrode cutting position to the glue sticking position, and n is the number of floating rollers in the third buffer area.

[0112] The preset time error is ±0.8s.

[0113] The main drive start-stop control module is specifically used for:

[0114] Calculate the total winding time of a single battery cell based on the winding time and winding auxiliary time of a single battery cell;

[0115] Determining the second main drive speed according to the total winding time of a single battery cell;

[0116] Control the third main drive and the second main drive to start simultaneously within a preset time error;

[0117] Control the third main drive to run at the third main drive speed, and the second main drive to run at the second main drive speed;

[0118] The third main drive and the second main drive are controlled to stop simultaneously within a preset time error.

[0119] Controlling the third main drive to operate at the third main drive speed and the second main drive to operate at the second main drive speed also includes:

[0120] Determining a first main drive speed for controlling the laser cutting speed according to the total winding time of a single battery cell;

[0121] Control the first main drive to run at the first main drive speed.

[0122] The gluing operation time is calculated based on the total winding time of a single cell, including:

[0123] Determine the target number of glue sticking for a single cell. If the target number of glue sticking for a single cell is one layer, the formula for calculating the glue sticking time is:

[0124] T3=T-T4

[0125] Among them, T3 is the gluing operation time of a single battery cell, T is the total winding time of a single battery cell, and T4 is the gluing time;

[0126] If the target number of glue application for a single cell is two layers, the calculation formula for the glue application running time is:

[0127] T3=T-T5-T6-T7

[0128] Among them, T5 is the time for applying the first layer of glue, T6 is the time from the position of the first layer of glue to the position of the second layer of glue, and T7 is the time for applying the second layer of glue.

[0129] Calculate the second main drive speed based on the glue running time, including:

[0130] Calculate the second main drive theoretical speed based on the rubber running time;

[0131] The second main drive speed is calculated according to the second main drive theoretical speed.

[0132] The calculation formula for the second main drive speed is:

[0133] V6=V5×K2

[0134] K2=1-(PrePos2-Modpos2)×0.0003

[0135] Among them, V6 is the second main drive speed, V5 is the second main drive theoretical speed, K2 is the second speed adaptive coefficient, PrePos2 is the current position of the floating roller in the second buffer area, the second buffer area is used to store the battery cells that have completed gluing, Modpos2 is the middle position of the floating roller in the second buffer area, and 0.0003 is the proportional constant.

[0136] The volume slicing cache stabilization control device provided by the present invention is used to execute the volume slicing cache stabilization control method provided by the present invention. Its principles and technical effects are the same as those of the volume slicing cache stabilization control method provided by the present invention, and will not be repeated here.

[0137] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A volume slicing cache stability control method, characterized in that: Applied to a cell electrode cutting and winding machine, a third buffer area is provided between the second main drive and the third main drive of the cell electrode cutting and winding machine, the second main drive is used to control the gluing speed, and the third main drive is used to control the winding speed. The cutting and winding buffer stability control method includes: S1. Determine whether the third buffer area needs to be adjusted. If so, jump to step S2; otherwise, jump to step S4. S2. Calculate the adjustment amount of the third buffer zone based on the length of a single battery cell, the actual length of the path from the electrode cutting position to the glue application position, and the number of floating rollers in the third buffer zone; S3, adjusting the cache capacity of the cache area according to the adjustment amount; S4, controlling the third main drive and the second main drive to start or stop within a preset time difference; The calculation formula for the adjustment amount of the third buffer area is: ； in, is the adjustment amount of the third buffer area, is the length of a single cell, is the actual length of the path from the electrode cutting position to the glue-applying position, and n is the number of floating rollers in the third buffer area.

2. The volume slicing cache stability control method according to claim 1, characterized in that: Step S1 includes: Determine whether the battery cell parameters are replaced. If so, the third buffer area needs to be adjusted, and the process jumps to step S2. Otherwise, the third buffer area does not need to be adjusted, and the process jumps to step S4.

3. The volume slicing cache stability control method according to claim 1, characterized in that: The preset time difference does not exceed 0.8s.

4. The volume slicing cache stability control method according to claim 1, characterized in that: Step S4 includes: S41. Calculate the total winding time of a single battery cell based on the winding time and auxiliary winding time of the single battery cell; S42, determining a second main drive speed according to the total winding time of a single battery cell; S43, controlling the third main drive and the second main drive to start within a preset time difference; S44, controlling the third main drive to operate at the third main drive speed, and the second main drive to operate at the second main drive speed; S45 , controlling the third main drive and the second main drive to stop within a preset time difference.

5. The volume slicing cache stability control method according to claim 4, characterized in that: Step S44 further includes: Determining a first main drive speed for controlling the laser cutting speed according to the total winding time of a single battery cell; Control the first main drive to run at the first main drive speed.

6. The volume slicing cache stability control method according to claim 4, characterized in that: Step S42 includes: Calculate the glue-taping running time based on the total winding time of a single battery cell; The second main drive speed is calculated based on the glue running time.

7. The volume slicing cache stability control method according to claim 4, characterized in that: Calculate the second main drive speed based on the glue running time, including: Calculate the second main drive theoretical speed based on the rubber running time; The second main drive speed is calculated according to the second main drive theoretical speed.

8. The volume slicing cache stability control method according to claim 7, characterized in that: The calculation formula for the second main drive speed is: ； in, is the second main drive speed, is the theoretical speed of the second main drive, is the second speed adaptation coefficient, The current position of the floating roller in the second buffer area, which is used to store the battery cells that have been glued. is the middle position of the floating roller in the second buffer area, and 0.0003 is the proportional constant.

9. A volume slicing cache stability control device, characterized in that: Applicable to a cell electrode cutting and winding machine, a third buffer area is provided between the second main drive and the third main drive of the cell electrode cutting and winding machine, the second main drive is used to control the gluing speed, and the third main drive is used to control the winding speed. The cutting and winding buffer stabilization control device includes: A judging module, configured to judge whether the third buffer area needs to be adjusted; an adjustment amount calculation module, configured to calculate the adjustment amount of the third buffer area if adjustment of the third buffer area is required, based on the length of a single battery cell, the actual length of the path from the electrode cutting position to the glue application position, and the number of floating rollers in the third buffer area; An adjustment module, configured to adjust a buffer size of the buffer area according to an adjustment amount; The main drive start-stop control module is used to control the start or stop of the third main drive and the second main drive within a preset time difference; The calculation formula for the adjustment amount of the third buffer area is: ； in, is the adjustment amount of the third buffer area, is the length of a single cell, is the actual length of the path from the electrode cutting position to the glue-applying position, and n is the number of floating rollers in the third buffer area.

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