A lithium battery PACK assembly detection device and method

Abstract

The present invention provides a lithium battery PACK assembly detection device and method. The device and method detect the early movement of the label during the label material roll labeling process when the lithium battery PACK is assembled, so as to prepare for providing a precise stop position for the later laser sensor detection position. The device and method detect the later movement of the label during the label material roll labeling process when the lithium battery PACK is assembled, and determine the deceleration strategy of the traction mechanism based on the early movement of the label. The traction mechanism is controlled to decelerate according to the deceleration strategy. Based on the later movement of the label, the traction mechanism is controlled to stop running during the deceleration process. After the traction mechanism stops running, the position of the label is the label picking position. Deceleration before stopping can more accurately ensure that the stop position of the label does not overshoot, and will not affect the label labeling rhythm. The rapid detection of the lithium battery PACK assembly label is realized, and a basis is provided for the accurate attachment of the label to the surface of the lithium battery.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery detection, and in particular to a lithium battery PACK assembly detection device and method. Background Art

[0002] The base material thickness of the lithium battery pack ultra-thin label roll is 0.025~0.038mm mesh noise reduction PET material, and the peeling force is about 0.8Kgf. The label of the roll is on the outside and the backing paper is on the inside. The label is thin and the backing paper is thick. The ductility of the label and the backing paper is quite different. The use of a label removal robot can realize the label peeling and the label removal. The label is sucked and transported for CCD visual correction, and then the label is accurately attached to the surface of the lithium battery pack. However, when the label removal robot takes the label, the label removal position needs to be determined. The traditional position determination uses a single optical fiber to detect from bottom to top. It is easy to overshoot when stopping after the label is detected. In order to avoid overshoot, the traction speed is reduced, which will affect the label removal rhythm. The mode is single and has great limitations, resulting in long detection time and low detection efficiency in the process of lithium battery PACK assembly labeling. Summary of the invention

[0003] The present invention provides a lithium battery PACK assembly detection device and method to solve the problems raised in the background technology.

[0004] A lithium battery PACK assembly detection device, comprising:

[0005] The first laser module is arranged at the front end of the second laser module and is used to detect the early movement of the label during the label material roll out process when the lithium battery PACK is assembled;

[0006] The first control module is used to determine the speed reduction strategy of the traction mechanism based on the previous movement of the label, and control the traction mechanism to reduce the speed according to the speed reduction strategy;

[0007] The second laser module is arranged at the rear end of the first laser module and is used to detect the late movement of the label during the label material roll out process when the lithium battery PACK is assembled;

[0008] The second control module is used to control the traction mechanism to stop running during the deceleration process based on the later movement of the label, and the position of the label after the traction mechanism stops running is the label picking position.

[0009] Preferably, the first laser module comprises:

[0010] A transmitting unit, used for transmitting a laser signal to a moving area of ​​the label using a digital laser sensor;

[0011] A receiving unit, used for receiving a reflected laser signal reflected from a moving area of ​​the laser signal detection label;

[0012] A calculation unit, used to determine the moving position information of the label based on the signal reception time difference and signal strength of the laser signal and the reflected laser signal;

[0013] The information acquisition unit is used to determine the previous movement speed and the previous movement position of the label based on the movement position information of the label in different time periods, and obtain the previous movement status of the label.

[0014] Preferably, the first control module includes:

[0015] An analysis unit, for determining a moving area and a moving speed of the label based on a previous moving condition of the label;

[0016] A strategy determination unit, used to determine a speed reduction strategy of the traction mechanism based on the moving area and moving speed of the label and the relative distance between the moving area of ​​the label and the label picking area;

[0017] The control unit is used to determine the control parameters of the traction mechanism from the speed reduction strategy, and operate the traction mechanism according to the control parameters to achieve speed reduction.

[0018] Preferably, the strategy determination unit includes:

[0019] A range determination unit, configured to obtain a target speed reduction range by matching from a speed reduction database based on the moving speed and the relative distance;

[0020] A range allocation unit, configured to divide the relative distance between the moving area and the mark-taking area into a plurality of distance areas according to a preset distance length, and determine an intermediate speed reduction range for each distance area based on the number of distance areas and in combination with a target speed reduction range;

[0021] a combination determination unit, configured to determine a plurality of speed reduction combinations for all distance zones based on an intermediate speed reduction range for each distance zone and using a speed distribution model for analysis, wherein each speed reduction combination determines a speed reduction value for each distance zone;

[0022] A sequence determination unit is used to establish a speed reduction sequence for each speed reduction combination, and determine a speed reduction difference between two adjacent speed reduction values ​​in the speed reduction sequence to obtain a difference sequence;

[0023] a difficulty determination unit, configured to determine a speed adjustment parameter and a speed adjustment frequency for the traction mechanism based on the speed reduction sequence, determine a parameter adjustment difficulty based on the speed adjustment parameter, determine a parameter adjustment complexity based on the speed adjustment frequency, and determine a parameter control difficulty for each speed reduction combination based on the parameter adjustment difficulty and the parameter adjustment complexity;

[0024] A smoothness unit, used to determine the speed reduction smoothness of the speed reduction process of the traction mechanism under each speed reduction combination based on the numerical value of the difference sequence;

[0025] The selection unit is used to select the optimal speed reduction combination from all speed reduction combinations based on the parameter control difficulty and the speed reduction smoothness, and use the optimal speed reduction combination as the speed reduction strategy of the traction mechanism.

[0026] Preferably, the selection unit includes:

[0027] an evaluation value determining unit, configured to determine a first evaluation value based on the parameter control difficulty, and determine a second evaluation value based on the deceleration smoothness;

[0028] A weight determination unit, for determining a first influence weight of parameter control and a second influence weight of a stability requirement based on a speed reduction requirement of the traction mechanism and a mechanism characteristic of the traction mechanism;

[0029] The scoring determination unit is used to take the sum of the product of the first evaluation value and the first influence weight and the product of the second evaluation value and the second influence weight as the scoring value for the speed reduction combination, and select the speed reduction combination with the highest scoring value as the optimal speed reduction combination.

[0030] Preferably, the second laser module comprises:

[0031] An angle adjustment unit, used for adjusting the second digital laser sensor based on the previous movement of the label and the multi-angle adjustment mechanism to obtain the target position characteristics;

[0032] The detection unit is used for detecting the later movement of the label during the label material roll unloading process when the lithium battery PACK is assembled by the second digital laser sensor under the target position feature.

[0033] Preferably, the angle adjustment unit comprises:

[0034] A situation analysis unit, used to determine the appearance characteristics of the label and the dynamic characteristics of the moving position of the label from the previous movement situation of the label, and determine the best recognition relative angle based on the appearance characteristics, and determine the relative position sequence of the second digital laser sensor and the label based on the dynamic characteristics of the moving position;

[0035] A position determination unit, used to determine the initial detection position and the end detection position of the second digital laser sensor based on the relative position sequence and the mark-taking area, and to determine the detection time difference based on the speed reduction strategy of the traction mechanism;

[0036] a position analysis unit, configured to determine an angular movement sequence of the second digital laser sensor based on the initial detection position and the end detection position, and to determine an angular movement speed sequence of the second digital laser sensor based on the detection time difference;

[0037] a parameter determination unit, configured to determine a left-right adjustment amplitude of the multi-angle adjustment mechanism based on the angle movement sequence, determine a left-right adjustment speed of the multi-angle adjustment mechanism based on the angle movement speed sequence, and determine a left-right adjustment parameter of the multi-angle adjustment mechanism based on the left-right adjustment amplitude and the left-right adjustment speed;

[0038] An angle unit, used to determine the moving position characteristics of the second digital laser sensor under the left and right adjustment parameters, and determine the simulated relative recognition angle of the label based on the moving position characteristics;

[0039] A time point determination unit, used to obtain an angle difference sequence between the best recognition relative angle and the simulated relative recognition angle, and determine the up and down adjustment time points and up and down adjustment parameters based on the angle difference sequence, and determine the left and right adjustment time points based on the left and right adjustment parameters;

[0040] An integration unit, configured to integrate the left-right adjustment parameter and the up-down adjustment parameter based on the time point sequence of the up-down adjustment time point and the left-right adjustment time point to obtain a target adjustment parameter;

[0041] The adjustment unit is used to adjust the second digital laser sensor using a multi-angle adjustment mechanism based on the target adjustment parameter to obtain the target position feature.

[0042] Preferably, the integration unit comprises:

[0043] A sorting unit, used for sorting the up and down adjustment time points and the left and right adjustment time points based on the time point sequence to obtain a sequence of all time points;

[0044] An inserting unit is used to insert the up and down adjustment parameters into the timetable of the left and right adjustment parameters based on the sequence of all the time points to obtain the target adjustment parameters corresponding to the entire timetable.

[0045] Preferably, the second control module includes:

[0046] A stop determination unit, used to establish a relative position relationship with the label taking area based on the later movement of the label, and to set a stop start position and stop deceleration data based on the relative position relationship;

[0047] an instruction constructing unit, for constructing a stop operation instruction based on the stop deceleration data when it is detected that the label reaches the stop start position;

[0048] The stop control unit is used to control the traction mechanism to execute the stop operation at the stop start position based on the stop operation instruction, so that the label is in the label taking position.

[0049] A detection method for a lithium battery PACK assembly detection device, comprising:

[0050] S1: Detect the early movement of the label during the label material roll out process when assembling lithium battery PACK;

[0051] S2: Based on the previous movement of the label, determine the speed reduction strategy of the traction mechanism, and control the traction mechanism to reduce speed according to the speed reduction strategy;

[0052] S3: Detect the late movement of the label during the label roll unloading process during the lithium battery PACK assembly;

[0053] S4: Based on the later movement of the label, the traction mechanism is controlled to stop running during the deceleration process, and the position of the label after the traction mechanism stops running is the label picking position.

[0054] Compared with the prior art, the present invention has achieved the following beneficial effects:

[0055] By detecting the early movement of the label during the label roll out process during the assembly of lithium battery PACK, preparation is made for providing accurate stop position for the later laser sensor detection position. The later movement of the label during the label roll out process during the assembly of lithium battery PACK is detected. Based on the early movement of the label, the deceleration strategy of the traction mechanism is determined, and the traction mechanism is controlled to decelerate according to the deceleration strategy. Based on the later movement of the label, the traction mechanism is controlled to stop running during the deceleration process. After the traction mechanism stops running, the position of the label is the label picking position. Deceleration before stopping can more accurately ensure that the stop position of the label does not overshoot, and will not affect the label outing rhythm. Rapid detection of lithium battery PACK assembly labels is achieved, providing a basis for accurate attachment of labels to the surface of lithium batteries.

[0056] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures specifically pointed out in this application document.

[0057] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0059] Figure 1 This is a structural diagram of a lithium battery PACK assembly detection device according to an embodiment of the present invention;

[0060] Figure 2 is a structural diagram of the first control module in an embodiment of the present invention;

[0061] Figure 3 The figure is a flow chart of a lithium battery PACK assembly detection method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0062] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0063] Example 1

[0064] Based on Example 1, the present invention provides a lithium battery PACK assembly detection device, such as Figure 1 As shown, including:

[0065] The first laser module is arranged at the front end of the second laser module and is used to detect the early movement of the label during the label material roll out process when the lithium battery PACK is assembled;

[0066] The first control module is used to determine the speed reduction strategy of the traction mechanism based on the previous movement of the label, and control the traction mechanism to reduce the speed according to the speed reduction strategy;

[0067] The second laser module is arranged at the rear end of the first laser module and is used to detect the late movement of the label during the label material roll out process when the lithium battery PACK is assembled;

[0068] The second control module is used to control the traction mechanism to stop running during the deceleration process based on the later movement of the label, and the position of the label after the traction mechanism stops running is the label picking position.

[0069] In this embodiment, the first laser module and the second laser module are mainly composed of digital laser sensors, which are respectively used to detect the movement of labels in the process of label material roll unloading during loading.

[0070] In this embodiment, the traction mechanism is used to control the moving speed of the traction belt, and the traction belt is used to traction the movement of the label.

[0071] The beneficial effects of the above design scheme are as follows: by detecting the early movement of the label during the label roll out process when assembling the lithium battery PACK, preparation is made for providing a precise stop position for the later laser sensor detection position, detecting the later movement of the label during the label roll out process when assembling the lithium battery PACK, and determining the deceleration strategy of the traction mechanism based on the early movement of the label, controlling the traction mechanism to decelerate according to the deceleration strategy, and controlling the traction mechanism to stop running during the deceleration process based on the later movement of the label. After the traction mechanism stops running, the position of the label is the label picking position, and decelerating first and then stopping can more accurately ensure that the stop position of the label does not overshoot, and will not affect the label outing rhythm, thereby realizing rapid detection of lithium battery PACK assembly labels and providing a basis for accurate attachment of labels to the surface of lithium batteries.

[0072] Embodiment 2:

[0073] Based on Example 1, the embodiment of the present invention provides a lithium battery PACK assembly detection device, wherein the first laser module includes:

[0074] A transmitting unit, used for transmitting a laser signal to a moving area of ​​the label using a digital laser sensor;

[0075] A receiving unit, used for receiving a reflected laser signal reflected from a moving area of ​​the laser signal detection label;

[0076] A calculation unit, used to determine the moving position information of the label based on the signal reception time difference and signal strength of the laser signal and the reflected laser signal;

[0077] The information acquisition unit is used to determine the previous movement speed and the previous movement position of the label based on the movement position information of the label in different time periods, and obtain the previous movement status of the label.

[0078] The beneficial effects of the above design scheme are: by utilizing the digital laser sensor to emit a laser signal to the moving area of ​​the label; receiving the laser signal to detect the reflected laser signal reflected back from the moving area of ​​the label; determining the moving position information of the label based on the signal reception time difference and signal strength between the laser signal and the reflected laser signal; determining the early moving speed and early moving position of the label based on the moving position information of the label in different time periods, and obtaining the early movement status of the label, so as to prepare for the precise stopping position provided by the subsequent laser sensor detection position, and provide a basis for determining the speed reduction strategy of the traction mechanism.

[0079] Embodiment 3:

[0080] Based on Example 1, the present invention provides a lithium battery PACK assembly detection device, such as Figure 2 As shown, the first control module includes:

[0081] An analysis unit, for determining a moving area and a moving speed of the label based on a previous moving condition of the label;

[0082] A strategy determination unit, used to determine a speed reduction strategy of the traction mechanism based on the moving area and moving speed of the label and the relative distance between the moving area of ​​the label and the label picking area;

[0083] The control unit is used to determine the control parameters of the traction mechanism from the speed reduction strategy, and operate the traction mechanism according to the control parameters to achieve speed reduction.

[0084] The beneficial effects of the above design scheme are: by determining the moving area and moving speed of the label based on the previous movement of the label, determining the deceleration strategy of the traction mechanism based on the moving area and moving speed of the label and the relative distance between the moving area of ​​the label and the label picking area, determining the control parameters of the traction mechanism from the deceleration strategy, and operating the traction mechanism according to the control parameters to achieve deceleration, thereby achieving early deceleration of the label and making full preparations for stopping.

[0085] Embodiment 4:

[0086] Based on Example 3, the embodiment of the present invention provides a lithium battery PACK assembly detection device, wherein the strategy determination unit includes:

[0087] A range determination unit, configured to obtain a target speed reduction range by matching from a speed reduction database based on the moving speed and the relative distance;

[0088] A range allocation unit, configured to divide the relative distance between the moving area and the mark-taking area into a plurality of distance areas according to a preset distance length, and determine an intermediate speed reduction range for each distance area based on the number of distance areas and in combination with a target speed reduction range;

[0089] a combination determination unit, configured to determine a plurality of speed reduction combinations for all distance zones based on an intermediate speed reduction range for each distance zone and using a speed distribution model for analysis, wherein each speed reduction combination determines a speed reduction value for each distance zone;

[0090] A sequence determination unit is used to establish a speed reduction sequence for each speed reduction combination, and determine a speed reduction difference between two adjacent speed reduction values ​​in the speed reduction sequence to obtain a difference sequence;

[0091] a difficulty determination unit, configured to determine a speed adjustment parameter and a speed adjustment frequency for the traction mechanism based on the speed reduction sequence, determine a parameter adjustment difficulty based on the speed adjustment parameter, determine a parameter adjustment complexity based on the speed adjustment frequency, and determine a parameter control difficulty for each speed reduction combination based on the parameter adjustment difficulty and the parameter adjustment complexity;

[0092] A smoothness unit, used to determine the speed reduction smoothness of the speed reduction process of the traction mechanism under each speed reduction combination based on the numerical value of the difference sequence;

[0093] The selection unit is used to select the optimal speed reduction combination from all speed reduction combinations based on the parameter control difficulty and the speed reduction smoothness, and use the optimal speed reduction combination as the speed reduction strategy of the traction mechanism.

[0094] In this embodiment, the target speed reduction range is the speed range obtained by the final speed reduction of the traction mechanism, and the intermediate speed reduction range is the speed range of the traction mechanism at the end of each distance zone.

[0095] In this embodiment, the speed distribution model is pre-designed to achieve speed distribution for each distance zone.

[0096] In this embodiment, the speed reduction sequence is obtained by combining the speed reduction values ​​in each distance zone.

[0097] The beneficial effects of the above design scheme are: by allocating the speed reduction from the two aspects of moving speed and relative distance, and taking the parameter control difficulty and the speed reduction smoothness as evaluation indicators to select the speed reduction strategy, the rationality of the final speed reduction strategy is ensured, providing a basis for the smooth stopping of the traction mechanism, and avoiding the problem of overshooting when stopping after detecting the label.

[0098] Embodiment 5:

[0099] Based on Example 4, the present invention provides a lithium battery PACK assembly detection device, wherein the selection unit includes:

[0100] an evaluation value determining unit, configured to determine a first evaluation value based on the parameter control difficulty, and determine a second evaluation value based on the deceleration smoothness;

[0101] A weight determination unit, for determining a first influence weight of parameter control and a second influence weight of a stability requirement based on a speed reduction requirement of the traction mechanism and a mechanism characteristic of the traction mechanism;

[0102] The scoring determination unit is used to take the sum of the product of the first evaluation value and the first influence weight and the product of the second evaluation value and the second influence weight as the scoring value for the speed reduction combination, and select the speed reduction combination with the highest scoring value as the optimal speed reduction combination.

[0103] The beneficial effect of the above design scheme is: by determining the first evaluation value based on the difficulty of parameter control, determining the second evaluation value based on the speed reduction smoothness, determining the first influence weight of parameter control based on the speed reduction demand and the mechanism characteristics of the traction mechanism, determining the second influence weight for the smoothness requirement, taking the sum of the product of the first evaluation value and the first influence weight and the product of the second evaluation value and the second influence weight as the score value for the speed reduction combination, selecting the speed reduction combination with the highest score as the optimal speed reduction combination, ensuring the rationality of the final speed reduction strategy, providing a basis for the smooth stop of the traction mechanism, and avoiding the problem of overshooting after the label is detected.

[0104] Embodiment 6:

[0105] Based on Example 1, the embodiment of the present invention provides a lithium battery PACK assembly detection device, wherein the second laser module includes:

[0106] An angle adjustment unit, used for adjusting the second digital laser sensor based on the previous movement of the label and the multi-angle adjustment mechanism to obtain the target position characteristics;

[0107] The detection unit is used for detecting the later movement of the label during the label material roll unloading process when the lithium battery PACK is assembled by the second digital laser sensor under the target position feature.

[0108] In this embodiment, the second digital laser sensor is installed at the end of the multi-angle adjustment mechanism, which can realize adjustment at any position and any angle, and is therefore compatible with all types of labels.

[0109] The beneficial effect of the above design scheme is: by adjusting the second digital laser sensor based on the multi-angle adjustment mechanism based on the early movement of the label, the target position characteristics are obtained. Under the target position characteristics, the second digital laser sensor detects the later movement of the label during the label material roll out of the lithium battery PACK assembly. The deceleration and then stopping can more accurately ensure that the stop position of the label does not overshoot, and will not affect the label outing rhythm, thereby realizing rapid detection of lithium battery PACK assembly labels and providing a basis for accurate attachment of labels to the surface of lithium batteries.

[0110] Embodiment 7:

[0111] Based on Example 6, the embodiment of the present invention provides a lithium battery PACK assembly detection device, wherein the angle adjustment unit includes:

[0112] A situation analysis unit, used to determine the appearance characteristics of the label and the dynamic characteristics of the moving position of the label from the previous movement situation of the label, and determine the best recognition relative angle based on the appearance characteristics, and determine the relative position sequence of the second digital laser sensor and the label based on the dynamic characteristics of the moving position;

[0113] A position determination unit, used to determine the initial detection position and the end detection position of the second digital laser sensor based on the relative position sequence and the mark-taking area, and to determine the detection time difference based on the speed reduction strategy of the traction mechanism;

[0114] a position analysis unit, configured to determine an angular movement sequence of the second digital laser sensor based on the initial detection position and the end detection position, and to determine an angular movement speed sequence of the second digital laser sensor based on the detection time difference;

[0115] a parameter determination unit, configured to determine a left-right adjustment amplitude of the multi-angle adjustment mechanism based on the angle movement sequence, determine a left-right adjustment speed of the multi-angle adjustment mechanism based on the angle movement speed sequence, and determine a left-right adjustment parameter of the multi-angle adjustment mechanism based on the left-right adjustment amplitude and the left-right adjustment speed;

[0116] An angle unit, used to determine the moving position characteristics of the second digital laser sensor under the left and right adjustment parameters, and determine the simulated relative recognition angle of the label based on the moving position characteristics;

[0117] A time point determination unit, used to obtain an angle difference sequence between the best recognition relative angle and the simulated relative recognition angle, and determine the up and down adjustment time points and up and down adjustment parameters based on the angle difference sequence, and determine the left and right adjustment time points based on the left and right adjustment parameters;

[0118] An integration unit, configured to integrate the left-right adjustment parameter and the up-down adjustment parameter based on the time point sequence of the up-down adjustment time point and the left-right adjustment time point to obtain a target adjustment parameter;

[0119] The adjustment unit is used to adjust the second digital laser sensor using a multi-angle adjustment mechanism based on the target adjustment parameter to obtain the target position feature.

[0120] In this embodiment, the best recognition relative angle is the relative angle between the second digital laser sensor and the label, and this angle facilitates accurate recognition of the label.

[0121] In this embodiment, the movement position characteristic of the second digital laser sensor is dynamic.

[0122] The beneficial effects of the above design scheme are as follows: by determining the appearance characteristics of the label and the dynamic characteristics of the moving position of the label from the early movement of the label, and determining the best recognition relative angle based on the appearance characteristics, determining the relative position sequence of the second digital laser sensor and the label based on the dynamic characteristics of the moving position, and determining the adjustment parameters of the up and down and left and right aspects of the multi-angle adjustment mechanism based on the best recognition relative angle and the relative position sequence, integrating the parameters in the determination process to ensure the accuracy of the target adjustment parameters in terms of timing and value, and achieving precise adjustment of the second digital laser sensor, so as to achieve deceleration before stopping, and more accurately ensure that the stopping position of the label does not overshoot, and will not affect the label output rhythm, thereby achieving rapid detection of lithium battery PACK assembly labels and providing a basis for accurate attachment of labels to the surface of lithium batteries.

[0123] Embodiment 8:

[0124] Based on Example 7, the present invention provides a lithium battery PACK assembly detection device, wherein the integration unit includes:

[0125] A sorting unit, used for sorting the up and down adjustment time points and the left and right adjustment time points based on the time point sequence to obtain a sequence of all time points;

[0126] An inserting unit is used to insert the up and down adjustment parameters into the timetable of the left and right adjustment parameters based on the sequence of all the time points to obtain the target adjustment parameters corresponding to the entire timetable.

[0127] The beneficial effect of the above design scheme is: by sorting the up and down adjustment time points and the left and right adjustment time points based on the time point sequence to obtain the sequence of all time points, based on the sequence of all time points, the up and down adjustment parameters are inserted into the time table of the left and right adjustment parameters to obtain the target adjustment parameters corresponding to the entire time table, thereby realizing the integration of the up, down, left and right angle adjustment parameters, ensuring the accuracy of the obtained target adjustment parameters in terms of timing and value, and realizing precise adjustment of the second digital laser sensor.

[0128] Embodiment 9:

[0129] Based on Example 1, this embodiment of the present invention provides a lithium battery PACK assembly detection device, wherein the second control module includes:

[0130] A stop determination unit, used to establish a relative position relationship with the label taking area based on the later movement of the label, and to set a stop start position and stop deceleration data based on the relative position relationship;

[0131] an instruction constructing unit, for constructing a stop operation instruction based on the stop deceleration data when it is detected that the label reaches the stop start position;

[0132] The stop control unit is used to control the traction mechanism to execute the stop operation at the stop start position based on the stop operation instruction, so that the label is in the label taking position.

[0133] In this embodiment, the stop start position is the position when the stop operation instruction is started, not the direct stop position.

[0134] In this embodiment, the stop start position is set based on the relative position relationship. When the relative position relationship reaches the preset position distance, the position where the label is located at this time is determined as the stop start position, and based on the speed at this time and the distance to the label picking position, the stop deceleration data is set.

[0135] The beneficial effects of the above design scheme are: by establishing a relative position relationship with the label picking area based on the later movement of the label, setting the stop start position and stop deceleration data based on the relative position relationship, and when it is detected that the label reaches the stop start position, constructing a stop operation instruction based on the stop deceleration data, and controlling the traction mechanism to execute the stop operation at the stop start position based on the stop operation instruction, so that the label is in the label picking position, and realizing deceleration before stopping can more accurately ensure that the stop position of the label does not overshoot, and will not affect the label output rhythm, thereby realizing rapid detection of lithium battery PACK assembly labels and providing a basis for accurate attachment of labels to the surface of lithium batteries.

[0136] Embodiment 10:

[0137] Based on Example 1, the present invention provides a detection method for a lithium battery PACK assembly detection device, such as Figure 3 As shown, including:

[0138] S1: Detect the early movement of the label during the label material roll out process when assembling lithium battery PACK;

[0139] S2: Based on the previous movement of the label, determine the speed reduction strategy of the traction mechanism, and control the traction mechanism to reduce speed according to the speed reduction strategy;

[0140] S3: Detect the late movement of the label during the label roll unloading process during the lithium battery PACK assembly;

[0141] S4: Based on the later movement of the label, the traction mechanism is controlled to stop running during the deceleration process, and the position of the label after the traction mechanism stops running is the label picking position.

[0142] In this embodiment, the first laser module and the second laser module are mainly composed of digital laser sensors, which are respectively used to detect the movement of labels in the process of label material roll unloading during loading.

[0143] In this embodiment, the traction mechanism is used to control the moving speed of the traction belt, and the traction belt is used to traction the movement of the label.

[0144] The beneficial effects of the above design scheme are as follows: by detecting the early movement of the label during the label roll out process when assembling the lithium battery PACK, preparation is made for providing a precise stop position for the later laser sensor detection position, detecting the later movement of the label during the label roll out process when assembling the lithium battery PACK, and determining the deceleration strategy of the traction mechanism based on the early movement of the label, controlling the traction mechanism to decelerate according to the deceleration strategy, and controlling the traction mechanism to stop running during the deceleration process based on the later movement of the label. After the traction mechanism stops running, the position of the label is the label picking position, and decelerating first and then stopping can more accurately ensure that the stop position of the label does not overshoot, and will not affect the label outing rhythm, thereby realizing rapid detection of lithium battery PACK assembly labels and providing a basis for accurate attachment of labels to the surface of lithium batteries.

[0145] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention belong to the scope of this application document and its equivalent technology, the present invention is also intended to include these changes and variations.

Claims

1. A lithium battery PACK assembly detection device, characterized in that: include: The first laser module is arranged at the front end of the second laser module and is used to detect the early movement of the label during the label material roll out process when the lithium battery PACK is assembled; The first control module is used to determine the deceleration strategy of the traction mechanism based on the previous movement of the label, and control the traction mechanism to decelerate according to the deceleration strategy, specifically including: An analysis unit, for determining a moving area and a moving speed of the label based on a previous moving condition of the label; A strategy determination unit, used to determine a speed reduction strategy of the traction mechanism based on the moving area and moving speed of the label and the relative distance between the moving area of ​​the label and the label picking area; A control unit, used to determine control parameters for the traction mechanism from the speed reduction strategy, and operate the traction mechanism according to the control parameters to achieve speed reduction; Wherein, the strategy determination unit includes: A range determination unit, configured to obtain a target speed reduction range by matching from a speed reduction database based on the moving speed and the relative distance; A range allocation unit, configured to divide the relative distance between the moving area and the mark-taking area into a plurality of distance areas according to a preset distance length, and determine an intermediate speed reduction range for each distance area based on the number of distance areas and in combination with a target speed reduction range; a combination determination unit, configured to determine a plurality of speed reduction combinations for all distance zones based on an intermediate speed reduction range for each distance zone and using a speed distribution model for analysis, wherein each speed reduction combination determines a speed reduction value for each distance zone; A sequence determination unit is used to establish a speed reduction sequence for each speed reduction combination, and determine a speed reduction difference between two adjacent speed reduction values ​​in the speed reduction sequence to obtain a difference sequence; a difficulty determination unit, configured to determine a speed adjustment parameter and a speed adjustment frequency for the traction mechanism based on the speed reduction sequence, determine a parameter adjustment difficulty based on the speed adjustment parameter, determine a parameter adjustment complexity based on the speed adjustment frequency, and determine a parameter control difficulty for each speed reduction combination based on the parameter adjustment difficulty and the parameter adjustment complexity; A smoothness unit, used to determine the speed reduction smoothness of the speed reduction process of the traction mechanism under each speed reduction combination based on the numerical value of the difference sequence; A selection unit is used to select an optimal speed reduction combination from all speed reduction combinations based on parameter control difficulty and speed reduction smoothness, and use the optimal speed reduction combination as a speed reduction strategy for the traction mechanism; The second laser module is arranged at the rear end of the first laser module and is used to detect the late movement of the label during the label material roll out process when the lithium battery PACK is assembled; The second control module is used to control the traction mechanism to stop running during the deceleration process based on the later movement of the label, and the position of the label after the traction mechanism stops running is the label picking position.

2. A lithium battery PACK assembly detection device according to claim 1, characterized in that: The first laser module comprises: A transmitting unit, used for transmitting a laser signal to a moving area of ​​the label using a digital laser sensor; A receiving unit, used for receiving a reflected laser signal reflected from a moving area of ​​the laser signal detection label; A calculation unit, used to determine the moving position information of the label based on the signal reception time difference and signal strength of the laser signal and the reflected laser signal; The information acquisition unit is used to determine the previous movement speed and the previous movement position of the label based on the movement position information of the label in different time periods, and obtain the previous movement status of the label.

3. A lithium battery PACK assembly detection device according to claim 1, characterized in that: The selection unit comprises: an evaluation value determining unit, configured to determine a first evaluation value based on the parameter control difficulty, and determine a second evaluation value based on the deceleration smoothness; A weight determination unit, for determining a first influence weight of parameter control and a second influence weight of a stability requirement based on a speed reduction requirement of the traction mechanism and a mechanism characteristic of the traction mechanism; The scoring determination unit is used to take the sum of the product of the first evaluation value and the first influence weight and the product of the second evaluation value and the second influence weight as the scoring value for the speed reduction combination, and select the speed reduction combination with the highest scoring value as the optimal speed reduction combination.

4. A lithium battery PACK assembly detection device according to claim 1, characterized in that: The second laser module comprises: An angle adjustment unit, used for adjusting the second digital laser sensor based on the previous movement of the label and the multi-angle adjustment mechanism to obtain the target position characteristics; The detection unit is used for detecting the later movement of the label during the label material roll unloading process when the lithium battery PACK is assembled by the second digital laser sensor under the target position feature.

5. A lithium battery PACK assembly detection device according to claim 4, characterized in that: The angle adjustment unit comprises: A situation analysis unit, used to determine the appearance characteristics of the label and the dynamic characteristics of the moving position of the label from the previous movement situation of the label, and determine the best recognition relative angle based on the appearance characteristics, and determine the relative position sequence of the second digital laser sensor and the label based on the dynamic characteristics of the moving position; A position determination unit, used to determine the initial detection position and the end detection position of the second digital laser sensor based on the relative position sequence and the mark-taking area, and to determine the detection time difference based on the speed reduction strategy of the traction mechanism; a position analysis unit, configured to determine an angular movement sequence of the second digital laser sensor based on the initial detection position and the end detection position, and to determine an angular movement speed sequence of the second digital laser sensor based on the detection time difference; a parameter determination unit, configured to determine a left-right adjustment amplitude of the multi-angle adjustment mechanism based on the angle movement sequence, determine a left-right adjustment speed of the multi-angle adjustment mechanism based on the angle movement speed sequence, and determine a left-right adjustment parameter of the multi-angle adjustment mechanism based on the left-right adjustment amplitude and the left-right adjustment speed; An angle unit, used to determine the moving position characteristics of the second digital laser sensor under the left and right adjustment parameters, and determine the simulated relative recognition angle of the label based on the moving position characteristics; A time point determination unit, used to obtain an angle difference sequence between the best recognition relative angle and the simulated relative recognition angle, and determine the up and down adjustment time points and up and down adjustment parameters based on the angle difference sequence, and determine the left and right adjustment time points based on the left and right adjustment parameters; An integration unit, configured to integrate the left-right adjustment parameter and the up-down adjustment parameter based on the time point sequence of the up-down adjustment time point and the left-right adjustment time point to obtain a target adjustment parameter; The adjustment unit is used to adjust the second digital laser sensor using a multi-angle adjustment mechanism based on the target adjustment parameter to obtain the target position feature.

6. A lithium battery PACK assembly detection device according to claim 5, characterized in that: The integration unit comprises: A sorting unit, used for sorting the up and down adjustment time points and the left and right adjustment time points based on the time point sequence to obtain a sequence of all time points; An inserting unit is used to insert the up and down adjustment parameters into the timetable of the left and right adjustment parameters based on the sequence of all the time points to obtain the target adjustment parameters corresponding to the entire timetable.

7. A lithium battery PACK assembly detection device according to claim 1, characterized in that: The second control module comprises: A stop determination unit, used to establish a relative position relationship with the label taking area based on the later movement of the label, and to set a stop start position and stop deceleration data based on the relative position relationship; an instruction constructing unit, for constructing a stop operation instruction based on the stop deceleration data when it is detected that the label reaches the stop start position; The stop control unit is used to control the traction mechanism to execute the stop operation at the stop start position based on the stop operation instruction, so that the label is in the label taking position.

8. A lithium battery PACK assembly detection method, specifically used in a lithium battery PACK assembly detection device as claimed in claim 1, characterized in that: include: S1: Detect the early movement of the label during the label material roll out process when assembling lithium battery PACK; S2: Based on the previous movement of the label, determine the speed reduction strategy of the traction mechanism, and control the traction mechanism to reduce speed according to the speed reduction strategy; S3: Detect the late movement of the label during the label roll unloading process during the lithium battery PACK assembly; S4: Based on the later movement of the label, the traction mechanism is controlled to stop running during the deceleration process, and the position of the label after the traction mechanism stops running is the label picking position.

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