Battery cell fixture

Abstract

This application relates to the field of battery manufacturing technology and provides a battery cell fixture, including: a fixture body; a clamping assembly movably connected to the fixture body, including a first clamp and a second clamp disposed opposite to each other, the first clamp and the second clamp being movable relative to the fixture body between a clamping position for holding the battery cell and an unlocking position for releasing the battery cell; a protective cover assembly, including a first protective cover and a second protective cover, the first protective cover covering the first clamp and the second protective cover covering the second clamp; the width of the first protective cover is greater than or equal to the sum of the width of the curing lamp and a preset movement value, and the width of the second protective cover is equal to the width of the first protective cover, wherein the width of the curing lamp is the dimension of the curing lamp in the battery cell conveying direction, and the preset movement value is the product of the initial moving speed of the battery cell and a preset delay time. In this application, the light from the curing lamp is reflected more inward in the gap between the curing lamp and the protective cover, and will not illuminate other positions of the battery cell fixture.

Description

Technical Field

[0001] This application belongs to the field of battery manufacturing technology, and in particular relates to cell fixtures. Background Technology

[0002] Battery cell fixtures typically use two grippers to hold the battery cells and process them sequentially through various stations on the production line. The spraying station uses a spray nozzle to evenly spray UV adhesive onto the surface of the battery cell, while the curing station uses a curing lamp to irradiate ultraviolet light onto the surface of the battery cell to cure the UV adhesive. The curing station is located adjacent to the spraying station.

[0003] In related technologies, when the battery cell jig holds the battery cell through the curing station, the light from the curing lamp after it has illuminated the surface of the battery cell and during the period between the curing lamp being turned off, the light from the curing lamp is easily refracted by the surface of the battery cell jig to the nozzle of the spraying station. This causes the UV adhesive on the nozzle to cure and clog the nozzle, resulting in unstable UV adhesive spraying flow, uneven adhesive layer thickness, and missed spraying defects on the surface of the battery cell, thus reducing the quality of the battery cell. Summary of the Invention

[0004] This application provides a battery cell fixture that can solve the technical problem in related technologies where the light from the curing lamp is refracted onto the nozzle by the surface of the battery cell fixture, causing nozzle blockage and affecting battery cell quality.

[0005] A first aspect of this application provides a battery cell fixture for clamping battery cells and moving the battery cells along a conveying direction. The battery cell fixture includes:

[0006] The main part of the fixture;

[0007] The clamping assembly is movably connected to the main body of the fixture. The clamping assembly includes a first clamp and a second clamp disposed opposite to each other. The first clamp and the second clamp can move relative to the main body of the fixture between a clamping position for clamping the battery cell and an unlocking position for releasing the battery cell.

[0008] The protective cover assembly includes a first protective cover and a second protective cover, the first protective cover covering the first gripper and the second protective cover covering the second gripper;

[0009] The width of the first protective cover is greater than or equal to the sum of the width of the curing lamp and the preset movement value. The width of the second protective cover is equal to the width of the first protective cover. The width of the curing lamp is the dimension of the curing lamp in the conveying direction of the battery cell. The preset movement value is the product of the initial moving speed of the battery cell and the preset delay time.

[0010] In this embodiment, the first protective cover covers the first gripper, and the second protective cover covers the second gripper. After the light from the curing station has illuminated the surface of the battery cell, the light from the curing lamp is reflected inward in the gap between the curing lamp and the protective cover, and will not illuminate other parts of the battery cell fixture. By limiting the lower limit of the width of the first and second protective covers, it can be ensured that the light irradiation range is always limited within the protective cover assembly before the curing lamp is turned off. This can effectively prevent the light from the curing lamp from being reflected to the spray head through the battery cell fixture, reduce the occurrence of spray head clogging, and help improve the coating quality of the battery cell surface.

[0011] In some embodiments, the width of the first protective cover is equal to the sum of the width of the curing lamp and a preset movement value.

[0012] By adopting the above technical solution, the size of the protective cover can be precisely controlled while meeting the protection requirements of the curing lamp irradiation range. This avoids the overall volume redundancy of the battery cell fixture due to excessively large protective cover width, reduces the space occupied by the battery cell fixture, and helps to improve the structural compactness and space utilization of the battery cell fixture.

[0013] In some embodiments, the battery cell fixture further includes a speed adjustment unit connected to the fixture body, the speed adjustment unit being configured as follows:

[0014] Obtain the actual delay time;

[0015] The speed adjustment coefficient is determined based on the preset delay time and the actual delay time;

[0016] Adjust the initial movement speed to the target movement speed according to the speed adjustment coefficient, and move at the target movement speed.

[0017] By adopting the above technical solution, adjusting the moving speed of the battery cell fixture can compensate for the deviation between the actual delay time and the preset delay time, ensuring that the preset moving value is the same as the actual moving value, and avoiding the curing lamp irradiation range from exceeding the protective cover assembly due to delay fluctuations, which can further improve the accuracy and reliability of light protection.

[0018] In some embodiments, the speed regulation unit is further configured to:

[0019] The ratio of the preset delay time to the actual delay time is determined as the speed adjustment coefficient;

[0020] Furthermore, the product of the speed adjustment coefficient and the initial movement speed is determined as the target movement speed.

[0021] By adopting the above technical solution and using a clear and quantitative speed adjustment calculation method, it is easier to achieve precise control in actual production. This can avoid compensation errors caused by ambiguity in the adjustment method and help ensure the accuracy of speed compensation.

[0022] In some embodiments, the speed regulation unit is further configured to:

[0023] When the battery cell fixture moves to the preset closed position, if a feedback signal to turn off the curing lamp is received, the target moving speed is adjusted to the initial moving speed.

[0024] By adopting the above technical solution, after the curing lamp completes the lamp-off action, the speed of the battery cell fixture is restored to the initial value in a timely manner. This can ensure the conveying efficiency of the battery cell fixture in subsequent processes, avoid affecting the overall production rhythm of the production line due to being in a compensating speed for a long time, and help to achieve accurate compensation for delay deviation while efficiently conveying the battery cells.

[0025] In some embodiments, the speed regulation unit is further configured to:

[0026] When the battery cell fixture moves to the preset closed position, if no feedback information for turning off the curing lamp is received, the battery cell fixture will be controlled to stop moving.

[0027] By adopting the above technical solution, the cell fixture stops moving when no feedback information for the curing lamp to turn off is received. This can prevent light from exceeding the light-shielding range of the protective cover assembly and reflecting onto the spray nozzle when the curing lamp is not turned off properly. This can achieve effective light blocking by the protective cover assembly, which helps to further improve the coating quality of the cell surface.

[0028] In some embodiments, the battery cell fixture further includes a delay adjustment unit connected to the fixture body, the delay adjustment unit being configured as follows:

[0029] Detect the actual moving speed of the battery cell;

[0030] The delay adjustment coefficient is determined based on the initial moving speed and the actual moving speed.

[0031] The target delay time is determined based on the delay adjustment coefficient and the preset delay time;

[0032] The command adjustment time is determined based on the target delay time and the preset delay time;

[0033] The target command time is determined based on the preset command time and command adjustment time, and a command to turn off the lamp is sent to the curing lamp at the target command time.

[0034] By adopting the above technical solution, in the case of a deviation between the actual moving speed and the initial moving speed of the battery cell fixture, the sending time of the light-off command is adjusted to compensate for the moving distance error caused by the speed deviation, so that the actual moving value is the same as the preset moving value. This ensures that the curing lamp completes the light-off action when the battery cell fixture moves to the preset off position, and can guarantee the effective blocking of light by the protective cover assembly.

[0035] In some embodiments, the delay adjustment unit is further configured to:

[0036] The ratio of the initial movement speed to the actual movement speed is determined as the delay adjustment coefficient;

[0037] Furthermore, the product of the delay adjustment coefficient and the preset delay time is determined as the target delay time.

[0038] By adopting the above technical solution and through standardized delay adjustment calculation methods, the adjustment process of command transmission time is made more precise, avoiding the loss of control over the light irradiation range caused by speed fluctuations, which helps to ensure the stability of the light protection effect.

[0039] In some embodiments, the delay adjustment unit is further configured to:

[0040] When the actual moving speed is greater than the initial moving speed, the difference between the preset command time and the command adjustment time is determined as the target command time.

[0041] By adopting the above technical solution, when the cell fixture moves faster, a lamp-off command can be sent in advance to offset the extra moving distance caused by the increased speed. This ensures that the curing lamp is turned off within the preset protective cover coverage area, preventing light from exceeding the light-shielding range of the protective cover assembly. This also prevents light from reflecting back to the nozzle, which helps improve the coating quality of the cell surface.

[0042] In some embodiments, the delay adjustment unit is further configured to:

[0043] When the actual moving speed is less than the initial moving speed, the sum of the preset command time and the command adjustment time is determined as the target command time.

[0044] By adopting the above technical solution, when the movement speed of the battery cell fixture slows down, the lamp-off command is sent in a delayed manner, which can compensate for the insufficient movement distance caused by the reduced speed and ensure that the irradiation time and range of the curing lamp meet the process requirements. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the structure of a battery cell fixture clamping a battery cell according to an embodiment of this application;

[0047] Figure 2 This is an exploded structural diagram of a battery cell fixture provided in one embodiment of this application;

[0048] Figure 3 This is a schematic diagram of the structure of a battery cell fixture that clamps and moves the battery cell along the conveying direction according to an embodiment of this application;

[0049] Figure 4 This is a schematic diagram of the structure of the battery cell fixture provided in one embodiment of this application when it is in a preset closed position;

[0050] Figure 5 This is a schematic diagram of the structure of a battery cell fixture moving to the end of a curing lamp according to an embodiment of this application;

[0051] Figure 6 This is a schematic diagram of the structure of the battery cell fixture and curing lamp provided in one embodiment of this application;

[0052] Figure 7 This is a flowchart illustrating the implementation of a speed adjustment operation according to an embodiment of this application;

[0053] Figure 8 This is a flowchart illustrating the implementation of a delay adjustment operation provided in an embodiment of this application. Detailed Implementation

[0054] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0055] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] Please see Figures 1 to 6 This application provides a battery cell fixture 100 for clamping battery cells 200 and driving battery cells 200 along a conveying direction (e.g., ...). Figures 4 to 6 As shown, the cell fixture 100 includes a fixture body 10, a clamping assembly 20, and a protective cover assembly 30.

[0059] The fixture body 10 is the main body of the battery cell fixture 100, and includes a base plate that provides mounting positions for other structures. The fixture body 10 can receive external forces to drive the clamping assembly 20 to move between a clamping position holding the battery cell 200 and an unlocking position releasing the battery cell 200.

[0060] The clamping assembly 20 is a structure on the battery cell fixture 100 used to clamp or release the battery cell 200. The clamping assembly 20 is located above the fixture body 10 and is movably connected to the fixture body 10. Optionally, the clamping assembly 20 is movably connected to the fixture body 10 via a linear guide, ball screw, sliding bearing, or guide rod. The clamping assembly 20 includes a first jaw 21 and a second jaw 22 disposed opposite to each other. The first jaw 21 and the second jaw 22 can move relative to the fixture body 10 between a clamping position and an unlocking position where the battery cell 200 is clamped. Specifically, when the fixture body 10 receives an external force, it can drive the first jaw 21 and the second jaw 22 to move towards each other or away from each other. When the first jaw 21 and the second jaw 22 move towards each other, they can move from the unlocking position to the clamping position. When the first jaw 21 and the second jaw 22 move away from each other, they can move from the clamping position to the unlocking position.

[0061] The protective cover assembly 30 is a housing structure disposed on the periphery of the battery cell fixture 100 to protect the internal parts of the battery cell fixture 100. The protective cover is connected to the main body 10 of the fixture and covers the main body 10 of the fixture and the clamping assembly 20.

[0062] The protective cover assembly 30 includes a main protective cover 31, a first protective cover 32 and a second protective cover 33 connected to the main protective cover 31.

[0063] The main protective cover 31 is the main body of the protective cover assembly 30. The main protective cover 31 is connected to and covers the main body of the fixture 10. The main protective cover 31 is constructed as a shell structure with a cavity, and the main body of the fixture 10 is accommodated within the cavity of the main protective cover 31. Preferably, the main protective cover 31 is detachably connected to the main body of the fixture 10 using a threaded connection structure or a snap-fit ​​structure.

[0064] The first protective cover 32 is connected to one end of the main protective cover 31 and covers the clamping assembly 20. Specifically, the first protective cover 32 covers at least a portion of the first gripper 21. The first protective cover 32 is constructed as a shell structure with a cavity, and the first gripper 21 is accommodated within the cavity of the first protective cover 32. When the clamping assembly 20 is in the clamping position, at least a portion of the first gripper 21 extends out of the first protective cover 32. Preferably, the first protective cover 32 is detachably connected to one end of the main protective cover 31 using a threaded connection structure or a snap-fit ​​structure.

[0065] The second protective cover 33 is connected to the other end of the main protective cover 31 and covers the clamping assembly 20. Specifically, the second protective cover 33 covers at least a portion of the second gripper 22. The second protective cover 33 is constructed as a shell structure with a cavity, and the second gripper 22 is accommodated within the cavity of the second protective cover 33. When the clamping assembly 20 is in the clamping position, at least a portion of the second gripper 22 extends out of the second protective cover 33. Preferably, the second protective cover 33 is detachably connected to the other end of the main protective cover 31 using a threaded connection structure or a snap-fit ​​structure.

[0066] When the clamping assembly 20 is in the clamped position, the battery cell 200 is clamped and fixed by the first jaw 21 and the second jaw 22, which are located between the first protective cover 32 and the second protective cover 33, and the battery cell 200 is located between the first jaw 21 and the second jaw 22. When the clamping assembly 20 is in the unlocked position, the first jaw 21 can extend out of the first protective cover 32 or be completely covered by the first protective cover 32, and the second jaw 22 can extend out of the second protective cover 33 or be completely covered by the second protective cover 33.

[0067] The width of the first protective cover 32 is greater than or equal to the sum of the width of the curing lamp 300 and the preset movement value. The width of the second protective cover 33 is equal to the width of the first protective cover 32. The width of the curing lamp 300 is the dimension of the curing lamp 300 in the conveying direction of the battery cell. The preset movement value is the product of the initial moving speed V of the battery cell 200 and the preset delay time t.

[0068] Here, when the battery cell fixture 100 moves the battery cell 200 to one end where it does not overlap with the curing lamp 300, as... Figure 4As shown, the entire upper surface of the battery cell 200 passes under the curing lamp 300. After the curing operation on the surface of the battery cell 200 is completed, the main controller sends a lamp-off command to the curing lamp 300, which then performs the lamp-off operation. There is a delay (approximately 0.2 seconds) between the sending and completion of the lamp-off command, while the battery cell fixture 100 is in continuous motion. During this delay, the battery cell fixture 100 will move a certain distance relative to the curing lamp 300, such as... Figures 4 to 5 As shown, this distance is the aforementioned preset movement value, that is, the preset movement value is the distance that the battery cell fixture 100 moves along with the battery cell 200 within the delay time from the time the light-off command is sent to the time of execution. The speed of the battery cell fixture 100 when passing through the curing station is uniform, and the preset movement value can be obtained by multiplying this speed by the preset delay time.

[0069] To ensure that the illumination range of the curing lamp 300 does not exceed the width of the first protective cover 32 or the second protective cover 33 when the battery cell 200 passes through the curing station, the first protective cover 32 or the second protective cover 33 can block the light from the curing lamp 300, and the width of the first protective cover 32 and the second protective cover 33 is greater than or equal to the sum of the width of the curing lamp 300 and the preset movement value.

[0070] In this embodiment, the first protective cover 32 covers the first gripper 21, and the second protective cover 33 covers the second gripper 22. After the light from the curing station has finished illuminating the surface of the battery cell, the light from the curing lamp 300 is reflected inward in the gap between the curing lamp 300 and the protective cover, and will not illuminate other positions of the battery cell fixture 100. By limiting the lower limit of the width of the first protective cover 32 and the second protective cover 33, it can be ensured that the light irradiation range is always limited within the protective cover assembly before the curing lamp 300 is turned off. This can effectively prevent the light from the curing lamp 300 from being reflected to the spray head through the battery cell fixture, reduce the occurrence of spray head clogging, and help improve the coating quality of the battery cell surface.

[0071] In some embodiments, the width of the first protective cover 32 is equal to the sum of the width of the curing lamp 300 and a preset movement value.

[0072] By adopting the above technical solution, the size of the protective cover can be precisely controlled while meeting the protection requirements of the curing lamp's 300 irradiation range. This avoids the overall volume redundancy of the battery cell fixture caused by an excessively wide protective cover, thereby reducing the space occupied by the battery cell fixture and helping to improve the structural compactness and space utilization of the battery cell fixture.

[0073] In some embodiments, the cell fixture further includes a speed adjustment unit connected to the fixture body, the speed adjustment unit being configured to perform a speed adjustment operation. For example... Figure 7 As shown, Figure 7 This is a flowchart of the implementation of a speed adjustment operation provided in an embodiment of this application, including the following steps 101 to 103.

[0074] Step 101: Obtain the actual delay time.

[0075] The aforementioned actual delay time refers to the actual time from when the main controller sends the light-off command to when the curing lamp completes the light-off command. The main controller can start timing after sending the light-off command and stop timing when it receives the curing lamp's completion command, thus obtaining the actual delay time.

[0076] Step 102: Determine the speed adjustment coefficient based on the preset delay time and the actual delay time.

[0077] The speed adjustment coefficient is used to adjust the moving speed of the battery cell along the conveying direction.

[0078] Preferably, the ratio of the preset delay time to the actual delay time is determined as the speed adjustment coefficient. When the actual delay time is greater than the preset delay time, the speed adjustment coefficient is less than 1; when the actual delay time is equal to the preset delay time, the speed adjustment coefficient is equal to 1; when the actual delay time is less than the preset delay time, the speed adjustment coefficient is greater than 1.

[0079] Alternatively, the reciprocal of the ratio of the actual delay time to the preset delay time can be used as the speed adjustment coefficient.

[0080] Step 103: Adjust the initial movement speed to the target movement speed according to the speed adjustment coefficient, and move at the target movement speed.

[0081] Preferably, the product of the speed adjustment coefficient and the initial moving speed is determined as the target moving speed.

[0082] As an example, if the preset delay time is 0.2S, the initial movement speed is V, and the detected actual delay time is 0.1S, then the speed adjustment coefficient is the ratio of the preset delay time to the actual delay time, which is 2. The target movement speed is the product of the speed adjustment coefficient and the initial movement speed, which is 2V.

[0083] As another example, if the preset delay time is 0.2S, the initial movement speed is V, and the detected actual delay time is 0.4S, then the speed adjustment coefficient is the ratio of the preset delay time to the actual delay time, which is 0.5. The target movement speed is the product of the speed adjustment coefficient and the initial movement speed, which is 0.5V.

[0084] By adopting the above technical solution, adjusting the moving speed of the battery cell fixture can compensate for the deviation between the actual delay time and the preset delay time, ensuring that the preset moving value is the same as the actual moving value, and avoiding the curing lamp irradiation range from exceeding the protective cover assembly due to delay fluctuations, which can further improve the accuracy and reliability of light protection.

[0085] In some embodiments, the speed regulation unit is further configured to:

[0086] When the battery cell fixture moves to the preset closed position, if a feedback signal to turn off the curing lamp is received, the target moving speed is adjusted to the initial moving speed.

[0087] The preset shut-off position is a pre-defined position along the battery cell's transport direction. Before the battery cell reaches the preset shut-off position at its initial speed, the curing lamp is turned on, and its light illuminates the surface of the battery cell to cure the UV adhesive. When the battery cell reaches the preset shut-off position at its initial speed, the curing lamp is turned off.

[0088] In practice, battery cell fixtures typically use magnetic levitation to move the battery cells between various stations on the production line. The main control unit can determine the real-time position of the battery cell fixture on the production line. Specifically, a permanent magnet array is installed on the moving part of the battery cell fixture as a physical marker for position identification. At the same time, magnetoresistive sensors (used to measure fine magnetic field angles and output analog signals) and Hall switch arrays (used to measure magnetic field periods and output digital signals) are deployed along the loop. The arc segment sensors are arranged according to curvature and corrected for arc shape to improve the FPGA's reception of sensor signals. The fine position is calculated by the magnetic field angle, and the macroscopic period interval is calculated by the Hall signal. The absolute position is then output and transmitted to the main control unit in real time.

[0089] The light-off feedback signal is the instruction sent by the curing lamp to the main control unit after executing the light-off command.

[0090] After the curing lamp completes the lamp-off action, the speed of the battery cell fixture is promptly restored to the initial value. This ensures the conveying efficiency of the battery cell fixture in subsequent processes and avoids affecting the overall production rhythm of the production line due to prolonged compensation speed. It also helps to achieve accurate compensation for delay deviations while efficiently conveying battery cells.

[0091] In some embodiments, the speed regulation unit is further configured to:

[0092] When the battery cell fixture moves to the preset closed position, if no feedback information for turning off the curing lamp is received, the battery cell fixture will be controlled to stop moving.

[0093] In this way, when no feedback information to turn off the curing lamp is received, the cell fixture stops moving. This can prevent light from exceeding the light-blocking range of the protective cover assembly and reflecting onto the spray nozzle when the curing lamp is not turned off properly. This can achieve effective light blocking by the protective cover assembly, which helps to further improve the coating quality of the cell surface.

[0094] In some embodiments, the battery cell fixture further includes a delay adjustment unit connected to the fixture body, the delay adjustment unit being configured to perform a delay adjustment operation. For example... Figure 8 As shown, Figure 8This is a flowchart of the implementation of a delay adjustment operation provided in an embodiment of this application, including the following steps 201 to 205.

[0095] Step 201: Detect the actual moving speed of the battery cell.

[0096] In practice, the battery cell fixture typically moves the battery cells at a constant speed along the conveying direction. A speed sensor can be installed on the battery cell fixture to detect the actual moving speed of the battery cells in real time.

[0097] Optionally, a magnetic scale can be installed on the moving part of the battery cell fixture, and magnetic sensors are evenly arranged on the circular track. The sensors output two orthogonal square wave pulse trains with a phase difference of 90°. Each pulse corresponds to a fixed micro distance (e.g., 0.1mm) of fixture movement. The main controller receives the pulse signal through the positioning encoder, counts the number of pulses per unit time, and directly calculates the speed by combining the movement distance corresponding to a single pulse.

[0098] When the initial moving speed is greater than or less than the actual moving speed, if the command is sent according to the preset delay time, the actual movement of the battery cell jig driven by the battery cell jig within the preset delay time will be different from the preset movement value. Therefore, it is necessary to delay or advance the time of sending the light-off command to the main controller to match the current actual moving speed, so that the light of the curing lamp is always within the blocking range of the protective cover before the lamp is turned off.

[0099] Step 202: Determine the delay adjustment coefficient based on the initial movement speed and the actual movement speed.

[0100] Preferably, the ratio of the initial movement speed to the actual movement speed is determined as the delay adjustment coefficient; that is, the quotient obtained by dividing the initial movement speed by the actual movement speed is determined as the delay adjustment coefficient. When the initial movement speed is greater than the actual movement speed, the delay adjustment coefficient is greater than 1; when the initial movement speed is less than the actual movement speed, the delay adjustment coefficient is less than 1.

[0101] Step 203: Determine the target delay time based on the delay adjustment coefficient and the preset delay time.

[0102] Preferably, the product of the delay adjustment coefficient and the preset delay time is determined as the target delay time.

[0103] As an example, the initial movement speed is V, the actual movement speed is 2V, the preset delay time is Δt, the delay adjustment coefficient is 0.5, and the target delay time is 0.5Δt.

[0104] As another example, the initial movement speed is V, the actual movement speed is 0.5V, the preset delay time is Δt, the delay adjustment coefficient is 2, and the target delay time is 2Δt.

[0105] Step 204: Determine the command adjustment time based on the target delay time and the preset delay time.

[0106] Here, the absolute value of the difference between the target delay time and the preset delay time can be used as the command adjustment time.

[0107] As an example, the initial movement speed is V, the actual movement speed is 2V, the preset delay time is Δt, the delay adjustment coefficient is 0.5, the target delay time is 0.5Δt, and the command adjustment time is 0.5Δt.

[0108] As another example, the initial movement speed is V, the actual movement speed is 0.5V, the preset delay time is Δt, the delay adjustment coefficient is 2, the target delay time is 2Δt, and the command adjustment time is Δt.

[0109] Step 205: Determine the target command time based on the preset command time and command adjustment time, and send a light-off command to the curing lamp at the target command time.

[0110] The preset command time is the pre-set time to send the light-off command to the curing lamp. The target command time is the time to send the light-off command to the curing lamp after adjusting the preset command time based on the actual moving speed of the battery cell fixture and the battery cell.

[0111] When the actual moving speed is greater than the initial moving speed, the difference between the preset command time and the command adjustment time is determined as the target command time.

[0112] As an example, the preset command time is t0, the initial moving speed is V, the actual moving speed is 2V, the preset delay time is Δt, the delay adjustment coefficient is 0.5, the target delay time is 0.5Δt, and the command adjustment time is 0.5Δt. The difference between the preset command time and the command adjustment time (t0-0.5Δt) is determined as the target command time. In this way, when the cell fixture moves faster, the extra moving distance brought about by the speed increase is offset by sending the lamp-off command in advance, ensuring that the curing lamp is turned off within the preset protective cover coverage area, avoiding light irradiation beyond the light-shielding range of the protective cover assembly, and preventing light reflection to the nozzle, which helps to improve the coating quality of the cell surface.

[0113] When the actual moving speed is less than the initial moving speed, the sum of the preset command time and the command adjustment time is determined as the target command time.

[0114] As an example, the preset command time is t0, the initial moving speed is V, the actual moving speed is 0.5V, the preset delay time is Δt, the delay adjustment coefficient is 2, the target delay time is 2Δt, and the command adjustment time is Δt. The difference between the preset command time and the command adjustment time (t0+Δt) is determined as the target command time. In this way, when the moving speed of the battery cell fixture slows down, the lamp-off command is sent with a delay, which can compensate for the insufficient moving distance caused by the speed reduction and ensure that the irradiation time and range of the curing lamp meet the process requirements.

[0115] By adopting the above technical solution, in the case of a deviation between the actual moving speed and the initial moving speed of the battery cell fixture, the sending time of the light-off command is adjusted to compensate for the moving distance error caused by the speed deviation, so that the actual moving value is the same as the preset moving value. This ensures that the curing lamp completes the light-off action when the battery cell fixture moves to the preset off position, and can guarantee the effective blocking of light by the protective cover assembly.

[0116] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery cell fixture for clamping battery cells and moving the battery cells along a conveying direction, characterized in that, The battery cell fixture includes: The main part of the fixture; A clamping assembly is movably connected to the main body of the fixture. The clamping assembly includes a first clamp and a second clamp disposed opposite to each other. The first clamp and the second clamp are movable relative to the main body of the fixture between a clamping position for clamping the battery cell and an unlocking position for releasing the battery cell. A protective cover assembly includes a first protective cover and a second protective cover, wherein the first protective cover covers the first gripper and the second protective cover covers the second gripper; The width of the first protective cover is greater than or equal to the sum of the width of the curing lamp and the preset movement value, and the width of the second protective cover is equal to the width of the first protective cover. The width of the curing lamp is the dimension of the curing lamp in the conveying direction of the battery cell, and the preset movement value is the product of the initial moving speed of the battery cell and the preset delay time.

2. The cell fixture according to claim 1, characterized in that, The width of the first protective cover is equal to the sum of the width of the curing lamp and the preset movement value.

3. The cell fixture according to claim 2, characterized in that, The battery cell fixture further includes a speed adjustment unit, which is used to perform the following speed adjustment operation: Detect the actual delay time; The speed adjustment coefficient is determined based on the preset delay time and the actual delay time; Adjust the initial moving speed to the target moving speed according to the speed adjustment coefficient, and move at the target moving speed.

4. The battery cell fixture according to claim 3, characterized in that, The speed regulation unit is further configured to: The ratio of the preset delay time to the actual delay time is determined as the speed adjustment coefficient; Furthermore, the product of the speed adjustment coefficient and the initial moving speed is determined as the target moving speed.

5. The cell fixture according to claim 3, characterized in that, The speed regulation unit is further configured to: When the battery cell fixture moves to the preset off position, if a feedback signal to turn off the curing lamp is received, the target moving speed is adjusted to the initial moving speed.

6. The cell fixture according to claim 3, characterized in that, The speed regulation unit is further configured to: When the battery cell fixture moves to the preset off position, if no feedback information for turning off the curing lamp is received, the battery cell fixture is controlled to stop moving.

7. The cell fixture according to claim 2, characterized in that, The battery cell fixture further includes a delay adjustment unit connected to the main body of the fixture, the delay adjustment unit being configured as follows: Detect the actual moving speed of the battery cell; The delay adjustment coefficient is determined based on the initial moving speed and the actual moving speed; The target delay time is determined based on the delay adjustment coefficient and the preset delay time; The command adjustment time is determined based on the target delay time and the preset delay time; The target command time is determined based on the preset command time and the command adjustment time, and a command to turn off the curing lamp is sent at the target command time.

8. The cell fixture according to claim 7, characterized in that, The delay adjustment unit is further configured to: The ratio of the initial moving speed to the actual moving speed is determined as the delay adjustment coefficient; Furthermore, the product of the delay adjustment coefficient and the preset delay time is determined as the target delay time.

9. The cell fixture according to claim 8, characterized in that, The delay adjustment unit is further configured to: When the actual moving speed is greater than the initial moving speed, the difference between the preset command time and the command adjustment time is determined as the target command time.

10. The cell fixture according to claim 8, characterized in that, The delay adjustment unit is further configured to: When the actual moving speed is less than the initial moving speed, the sum of the preset command time and the command adjustment time is determined as the target command time.

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