Dynamic data acquisition device for cylindrical battery

Abstract

The invention provides a dynamic data acquisition device for a cylindrical battery, and relates to the technical field of battery failure experiments. Comprising a bottom plate used for fixing a sliding block positioning plate, a sliding rail sliding block mechanism, a supporting wall rotating shaft mechanism, a constraint condition plate and a cylindrical battery dynamic data acquisition mechanism, and the sliding block positioning plate is used for positioning a sliding block with the distance adjusted in the sliding rail sliding block mechanism; the sliding rail and sliding block mechanism is used for adjusting the distance between the bearing wall rotating shaft mechanism and the cylindrical battery dynamic data acquisition mechanism, the bearing wall rotating shaft mechanism is used for supporting the constraint condition plate and the cylindrical battery dynamic data acquisition mechanism, and the constraint condition plate is used for providing different constraint conditions. And the cylindrical battery dynamic data acquisition mechanism is used for acquiring experimental data of the cylindrical battery to be tested. The problem that in the prior art, acquisition of data such as voltage, vibration and deformation in the battery failure process is lacked is solved.

Description

Technical Field

[0001] The invention relates to the technical field of battery failure experiments, and in particular to a cylindrical battery dynamic data acquisition device. Background Art

[0002] As a highly efficient energy storage and conversion device, lithium-ion batteries have been widely used in many fields such as portable electronic devices, electric vehicles, and energy storage systems. With the increase of usage time and the diversity of usage environments, lithium-ion batteries may experience performance degradation or even failure. This not only affects the normal operation of the equipment, but may also pose a threat to the safety of users. Therefore, in-depth analysis and research on lithium-ion battery failure is crucial. However, the equipment currently used to conduct failure tests on lithium-ion batteries only collects data such as force, speed, and energy, but lacks data such as voltage, vibration, and deformation during battery failure. It is cumbersome and difficult to obtain these data, so it is necessary to invent a device that can systematically collect these data, simplify and facilitate battery failure experiments, and thus better analyze and monitor the safety status of the battery, which is more conducive to research in the field of cylindrical battery failure. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a cylindrical battery dynamic data acquisition device.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A cylindrical battery dynamic data acquisition device, comprising:

[0006] A bottom plate and a slider positioning plate, a slide rail slider mechanism, a support wall shaft mechanism, a constraint condition plate and a cylindrical battery dynamic data acquisition mechanism all fixed to the bottom plate;

[0007] The bottom plate is used to fix the slider positioning plate, the slide rail slider mechanism, the supporting wall rotating shaft mechanism, the constraint condition plate and the cylindrical battery dynamic data acquisition mechanism; the slider positioning plate is used to position the slider after the distance is adjusted in the slide rail slider mechanism; the slide rail slider mechanism is used to adjust the distance between the supporting wall rotating shaft mechanism and the cylindrical battery dynamic data acquisition mechanism; the supporting wall rotating shaft mechanism is used to support the constraint condition plate and the cylindrical battery dynamic data acquisition mechanism; the constraint condition plate is used to provide different constraint conditions; and the cylindrical battery dynamic data acquisition mechanism is used to collect experimental data of the cylindrical battery to be tested.

[0008] Preferably, the bottom plate is provided with a fixing through hole, a first threaded through hole, a second threaded through hole, a third threaded through hole, and a slide rail baffle;

[0009] The fixing through hole is connected to the experimental equipment through bolts, the first threaded through hole is used to fix the slide rail baffle on the base plate, the second threaded through hole is used to connect with the slide rail in the slide rail slider mechanism, the third threaded through hole is used to connect with the slider positioning plate, and the slide rail baffle is used to fix the slider on the slide rail, wherein the slide rail baffle bolts and two slide rail baffle through holes are provided on the slide rail baffle, and the slide rail baffle through holes are used to fix to the base plate through the slide rail baffle bolts.

[0010] Preferably, the slider positioning plate comprises:

[0011] A set screw, a slider positioning plate groove and a slider positioning plate through hole;

[0012] The through hole of the slider positioning plate is connected to the bottom plate through the set screw, and the groove of the slider positioning plate is sleeved on the slide rail.

[0013] Preferably, the slide rail and slider mechanism comprises:

[0014] Slide rails, slide rail countersunk through holes, slide rail ball tracks, slider set screws, sliders, balls, slider-dustproof baffle threaded holes, slider-support wall threaded holes, slider dustproof baffles and slide rail hexagon socket countersunk bolts;

[0015] The slide rails are provided with two, and the slide rails are symmetrically fixed to the base plate by means of the slide rail hexagon countersunk bolts, the slide rail countersunk through holes and the slide rail ball tracks. The sliders are correspondingly provided on the slide rails, and the balls are provided on the slide rail ball tracks. The slider dustproof baffle is fixed to both sides of the slider by means of the slider fixing screws and the slider-dustproof baffle threaded holes, and the slider-supporting wall threaded holes are used for fixing the slider between the supporting walls in the supporting wall rotating shaft mechanism.

[0016] Preferably, the supporting wall rotating shaft mechanism comprises:

[0017] Support wall, constraint plate slot, deep groove ball bearing with sealing ring on one side, rotating shaft, rotating shaft threaded hole, support wall bearing slot, support wall threaded hole and support wall set screw;

[0018] The number of the supporting walls is 4 and they are fixed to the corresponding upper part of the slider through the corresponding threaded holes of the supporting walls and the set screws of the supporting walls. The bearing slots of the supporting walls are correspondingly arranged on the supporting walls. The deep groove ball bearing with a sealing ring on one side is correspondingly placed in the bearing slots of the supporting walls, and the side with the sealing ring is placed on the outside. The number of the rotating shafts is 2, and the shaft ends of the rotating shafts are correspondingly inserted into the inner diameter of the bearings. The rotating shafts are provided with threaded holes of the rotating shafts. The constraint plate slots are arranged at preset positions of the supporting walls.

[0019] Preferably, the constraint plate is provided with a middle round hole and a middle square hole;

[0020] The middle round hole and the middle square hole are respectively arranged at a first preset position and a second preset position of the constraint condition plate.

[0021] Preferably, the cylindrical battery dynamic data acquisition mechanism comprises:

[0022] A shaft connecting groove, a cylindrical battery sleeve, a sleeve through hole, a sleeve groove, a cylindrical battery fixing threaded hole structure, an acoustic emission device, a fixing bolt, an anti-skid rubber head of the fixing bolt, a fixing threaded hole structure of the acoustic emission device, a fixing threaded hole structure of the voltage sensor, a voltage sensor sleeve, an anti-skid rubber layer of the voltage sensor sleeve, a voltage sensor wire through hole and a shaft fixing bolt;

[0023] The cylindrical battery sleeve fixes the shaft connecting groove on the corresponding shaft through the sleeve through hole and the shaft fixing bolt, the fixing bolt is connected to the cylindrical battery fixing threaded hole structure, the fixing bolt anti-skid rubber head is arranged at the lower end of the fixing bolt, the sound emission device is placed in the sound emission device fixing threaded hole structure and the fixing bolt is connected to the sound emission device fixing threaded hole structure, a voltage sensor wire through hole is opened in the center of the voltage sensor sleeve, and a layer of voltage sensor sleeve anti-skid rubber layer is coated on the inner surface of the voltage sensor wire through hole, the sleeve through hole and the sleeve fixing bolt are fixed to the shaft, the voltage sensor is connected to the voltage sensor fixing bolt hole structure of the cylindrical battery sleeve through its wire and the voltage sensor sleeve, the sound emission device is placed in the sound emission device fixing threaded hole structure, the fixing bolt and the cylindrical battery fixing threaded hole structure are fixed to the side of the cylindrical battery to be tested, and the sleeve grooves are respectively sleeved on both ends of the cylindrical battery to be tested.

[0024] The present invention discloses the following technical effects:

[0025] The present invention provides a cylindrical battery dynamic data acquisition device, comprising:

[0026] A bottom plate and a slider positioning plate, a slide rail slider mechanism, a support wall rotating shaft mechanism, a constraint plate and a cylindrical battery dynamic data acquisition mechanism all fixed to the bottom plate; the bottom plate is used to fix the slider positioning plate, the slide rail slider mechanism, the support wall rotating shaft mechanism, the constraint plate and the cylindrical battery dynamic data acquisition mechanism, the slider positioning plate is used to position the slider after the distance is adjusted in the slide rail slider mechanism, the slide rail slider mechanism is used to adjust the distance between the support wall rotating shaft mechanism and the cylindrical battery dynamic data acquisition mechanism, the support wall rotating shaft mechanism is used to support the constraint plate and the cylindrical battery dynamic data acquisition mechanism, the constraint plate is used to provide different constraints, and the cylindrical battery dynamic data acquisition mechanism is used to collect experimental data of the cylindrical battery to be tested. The present invention can collect the experimental process data of the battery by using the cylindrical battery dynamic data acquisition mechanism, and can adapt to various sizes of cylindrical batteries to be tested through the adjustment of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 This is a schematic diagram of the structure of a modular integrated device for collecting dynamic data of cylindrical batteries according to the present invention;

[0029] Figure 2 It is a structural schematic diagram of the bottom plate of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the positioning plate of the slider of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the slide rail and slider mechanism of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the supporting wall rotating shaft mechanism of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the constraint condition plate of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the dynamic data acquisition mechanism of a cylindrical battery of the present invention;

[0035] Figure 8 A schematic diagram of the structure of a modular battery safety status monitoring method under one condition of the present invention;

[0036] Fig. 9A line graph of experimental collection data of the present invention;

[0037] Fig.10 It is a specific operation flow chart of the present invention.

[0038] Description of reference numerals:

[0039] 1-base plate; 101-fixed through hole; 102-slide rail baffle threaded through hole; 103-slide rail threaded through hole; 104-slide block positioning plate threaded hole; 105-slide rail baffle; 106-slide rail baffle bolt; 107-slide rail baffle through hole; 2-slide block positioning plate; 201-slide block positioning plate fixing screw; 202-slide block positioning plate groove; 203-slide block positioning plate through hole; 3-slide rail slider mechanism; 301-slide rail; 302-slide rail countersunk through hole; 303-slide rail ball track; 304-slide block fixing screw; 305-slide block; 306-ball; 307-slide block-dustproof baffle threaded hole; 308-slide block-supporting wall threaded hole; 309-slide block dustproof baffle; 310-slide rail hexagon countersunk bolt; 4-supporting wall shaft mechanism; 401-supporting wall; 402-constraint condition card slot; 403-one Deep groove ball bearing with sealing ring; 404-rotating shaft; 405-rotating shaft threaded hole; 406-supporting wall bearing slot; 407-supporting wall threaded hole; 408-supporting wall set screw; 5-constraint plate; 501-middle round hole; 502-middle square hole; 6-cylindrical battery dynamic data acquisition mechanism; 601-rotating shaft connecting groove; 602-cylindrical battery sleeve; 603-sleeve through hole; 604-sleeve groove; 605-cylindrical battery fixed threaded hole structure; 606-acoustic emission device; 607-fixing bolt; 608-anti-slip rubber head of fixing bolt; 609-acoustic emission device fixed threaded hole structure; 610-voltage sensor fixed threaded hole structure; 611-voltage sensor sleeve; 612-voltage sensor sleeve anti-slip rubber layer; 613-voltage sensor wire through hole; 614-rotating shaft fixing bolt. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] like Figure 1As shown, the present invention provides a cylindrical battery dynamic data acquisition device, comprising:

[0043] A bottom plate 1 and a slider positioning plate 2, a slide rail slider mechanism 3, a support wall shaft mechanism 4, a constraint condition plate 5 and a cylindrical battery dynamic data acquisition mechanism 6, all of which are fixed to the bottom plate 1;

[0044] The base plate 1 is used to fix the slider positioning plate 2, the slide rail slider mechanism 3, the supporting wall shaft mechanism 4, the constraint plate 5 and the cylindrical battery dynamic data acquisition mechanism 6. The slider positioning plate 2 is used to position the slider 305 after the distance is adjusted in the slide rail slider mechanism 3. The slide rail slider mechanism 3 is used to adjust the distance between the supporting wall shaft mechanism 4 and the cylindrical battery dynamic data acquisition mechanism 6. The supporting wall shaft mechanism 4 is used to support the constraint plate 5 and the cylindrical battery dynamic data acquisition mechanism 6 and drive the rotation of the cylindrical battery dynamic data acquisition mechanism 6. The constraint plate 5 is used to provide different constraints. The cylindrical battery dynamic data acquisition mechanism 6 is used to collect experimental data of the cylindrical battery to be tested.

[0045] The supporting wall shaft mechanism 4 ensures that the data acquisition mechanism can rotate. When the battery is damaged and bent, the two ends of the battery will rise up, and the data acquisition mechanism connected to the two ends of the battery will also rotate to ensure that there is no secondary damage between it and the battery, which will affect the experimental results.

[0046] Specifically, the constraints are the constraints provided by different constraint plates, such as round holes, square holes, etc. The battery is damaged in different forms under different constraint conditions, and the collected battery data are also different.

[0047] The constraint board is used to simulate different working conditions of the battery, so as to collect various data when the battery is damaged under different working conditions.

[0048] Specifically, a base plate 1 fixed on the drop weight test machine for fixing the entire integrated device of the cylindrical battery dynamic data acquisition module; a slider positioning plate 2 fixed on the base plate 1 for positioning the slider 305 after adjusting the distance; a slide rail slider mechanism 3 fixed on the base plate 1 for adjusting the distance; a supporting wall shaft mechanism 4 fixed on the main body of the slider 305 for supporting the cylindrical battery and ensuring the rotation of the cylindrical battery; a constraint condition plate 5 fixed between the four supporting walls 401 for providing different constraint conditions required for the experiment; a cylindrical battery dynamic data acquisition mechanism 6 fixed on the shaft 404 for dynamic data acquisition of the cylindrical battery.

[0049] Furthermore, the bottom plate 1 is provided with a fixing through hole 101, a first threaded through hole, a second threaded through hole, a third threaded through hole, and a slide rail baffle 105;

[0050] The fixing through hole 101 is connected to the experimental equipment through bolts, the first threaded through hole is used to fix the slide rail baffle 105 on the base plate 1, the second threaded through hole is used to connect with the slide rail 301 in the slide rail slider mechanism 3, the third threaded through hole is used to connect with the slider positioning plate 2, the slide rail baffle 105 is used to fix the slider 305 on the slide rail 301, wherein the slide rail baffle bolts 106 and two slide rail baffle through holes 107 are provided on the slide rail baffle 105, and the slide rail baffle through holes 107 are used to be fixed to the base plate 1 through the slide rail baffle bolts 106.

[0051] Specifically, Figure 2 As shown, it is a schematic diagram of the base plate 1, and fixing through holes 101 are opened at the four vertices of the base plate 1, which are fixed to the experimental equipment by bolt connection; the slide rail baffle threaded through hole 102 is used to fix the slide rail baffle 2 to the base plate 1; the slide rail threaded through hole 103 is used to fix the slide rail 401 to the base plate 1; the slider positioning threaded hole 104 is used to fix the slider positioning plate 3 to the base plate 1, and according to the height of different types of cylindrical batteries, slider positioning threaded holes 104 are opened at different positions, and the position of the slider positioning plate 3 is adjusted to meet different experimental requirements; two parallel slide rail baffle through holes 107 are opened on the slide rail baffle 105, which is fixed to the base plate 1 by slide rail baffle bolts 106 to ensure that the slider does not separate from the slide rail 301.

[0052] Specifically, the two slide rails 301 of the slide rail slider mechanism 3 are symmetrically fixed on the base plate 1 by means of the slide rail hexagon countersunk bolts 310 and the slide rail countersunk through holes 302. There are two slider devices 305 on each of the two slide rails 301. The slide rails 301 and the sliders 305 are secured in the horizontal and vertical directions, as well as in the axial direction, by means of the balls 306 on the internal slide rail ball tracks 303. The left and right sides of each slider 305 are fixed to the slider dustproof baffle 309 by means of set screws, to ensure that the balls 306 are inside the slide rail ball tracks 303 and are not contaminated by the powder after the cylindrical battery is destroyed.

[0053] Furthermore, the slider positioning plate 2 includes:

[0054] The set screw, the slider positioning plate groove 202 and the slider positioning plate through hole 203;

[0055] The slider positioning plate through hole 203 is connected to the base plate 1 via the set screws, and the slider positioning plate groove 202 is sleeved on the slide rail 301 .

[0056] Specifically, Figure 3As shown, it is a schematic diagram of the slider positioning plate 2, which is connected to the base plate 1 through the slider positioning through hole 203 and the slider positioning plate fixing screw 201 to limit the movement of the slider 305 when different cylindrical battery models are used in the experiment; the slider positioning plate groove 202 is sleeved on the slide rail 301.

[0057] Furthermore, the slide rail and slider mechanism 3 includes:

[0058] Slide rail 301, slide rail countersunk through hole 302, slide rail ball track 303, slider set screw 304, slider 305, ball 306, slider-dust baffle threaded hole 307, slider-support wall threaded hole 308, slider dust baffle 309 and slide rail hexagon socket countersunk bolt 310;

[0059] The slide rails 301 are provided in two pieces, and the slide rails 301 are symmetrically fixed on the base plate 1 by means of the slider-slide rail hexagon countersunk bolts 310, the slide rail countersunk through holes 302 and the slide rail ball track 303. The slider 305 is correspondingly provided on the slide rail 301, and the ball 306 is provided on the slide rail ball track 303. The slider dust baffle 309 is fixed to both sides of the slider 305 by means of the slider fixing screws 304 and the slider-dust baffle threaded holes 307. The slider-slider-supporting wall threaded holes 308 are used for fixing the slider 305 between the supporting walls 401 in the supporting wall rotating shaft mechanism 4.

[0060] Specifically, Figure 4 As shown, it is a slide rail slider mechanism 3, the slide rail 301 is fixed to the base plate 1 through the slide rail countersunk through hole 302 and the slide rail hexagon countersunk bolt 310; the ball 306 is stuck in the slide rail ball track 303 between the slide rail 301 and the slider 305 to ensure the sliding property of the slide rail; the slider dust baffle 309 is fixed to both sides of the slider 305 through the slider fixing screw 304 and the slider-dust baffle threaded hole 307, on the one hand to ensure that the ball 306 is always in the slide rail ball track 303, on the other hand to isolate the powder contamination generated by the cylindrical battery failure experiment; the slider-support wall threaded hole 308 is used to fix the slider 305 between the support wall 401.

[0061] Furthermore, the supporting wall rotating shaft mechanism 4 includes:

[0062] Support wall 401, constraint plate 5 slot 402, one-side deep groove ball bearing with sealing ring 403, shaft 404, shaft threaded hole 405, support wall bearing slot 406, support wall threaded hole 407 and support wall set screw 408;

[0063] The middle round hole and the middle square hole are respectively arranged at a first preset position and a second preset position of the constraint condition plate.

[0064] The supporting walls 401 are provided in four numbers and are fixed to the corresponding upper part of the slider 305 through the corresponding supporting wall threaded holes 407 and the supporting wall set screws 408. The supporting wall bearing slots 406 are provided on the supporting walls 401. The deep groove ball bearings 403 with a sealing ring on one side are placed in the supporting wall bearing slots 406, with the side with the sealing ring placed on the outside. The rotating shafts 404 are provided in two numbers, and the shaft ends of the rotating shafts 404 are correspondingly inserted into the inner diameter of the bearing. The rotating shafts 404 are provided with rotating shaft threaded holes 405. The constraint plate 5 slots 402 are provided at the preset positions of the supporting walls 401.

[0065] Specifically, the four supporting walls 401 of the supporting wall rotating shaft mechanism 4 are fixed to the upper part of the slider 305 through the four supporting wall threaded through holes and set screws at the bottom, respectively, to play the role of supporting the constraint plate 5 and the cylindrical battery dynamic data acquisition mechanism 6. Four deep groove ball bearings 403 with sealing rings on one side are respectively placed in the supporting wall bearing slots 406 of the four supporting walls 401, wherein the side with the sealing ring is placed on the outside, which ensures the rotation of the rotating shaft 404 and the sealing ring can ensure that the bearing is not contaminated by the powder after the cylindrical battery is destroyed. The shaft ends of the two rotating shafts 404 are respectively inserted into the inner diameter of the bearing, and the position of the bearing is fixed by its shaft shoulder; the four corners of the constraint plate 5 are respectively placed in the supporting wall 401 slots on the inner side of the four supporting walls 401, so as to provide different constraints required for different cylindrical battery failure experiments.

[0066] Specifically, Figure 5 As shown, it is a schematic diagram of the supporting wall shaft mechanism 4. In the whole device, four supporting walls 401 are respectively fixed on four sliders 405 through supporting wall threaded holes 407 and supporting wall set screws 408 to support the shaft 404, the constraint plate 5 and the cylindrical battery dynamic data acquisition mechanism 6; four deep groove ball bearings 403 with sealing rings on one side respectively put the side without sealing rings into the supporting wall bearing slots 406, and the two ends of the shaft 404 are respectively inserted into the four deep groove ball bearings 403 with sealing rings on one side, and positioned through the shoulders. Two parallel shaft threaded holes 405 are opened in the middle, the deep groove ball bearings 403 with sealing rings on one side are used to ensure the rotation of the cylindrical battery dynamic data acquisition mechanism 6, and the sealing ring is used to isolate the powder pollution generated in the cylindrical battery failure experiment. The shaft 404 and the shaft threaded hole 405 are used to support and fix the cylindrical battery dynamic data acquisition mechanism 6; the constraint slot 402 is used to fix a specific constraint plate 5 according to different experimental requirements.

[0067] Furthermore, the constraint plate 5 is provided with a middle round hole 501 and a middle square hole 502;

[0068] like Figure 6As shown, it is a schematic diagram of two types of constraint condition plates 5, wherein a middle circular hole 501 and a middle square hole 502 are respectively opened in the middle. This constraint condition plate 5 is only a constraint condition plate 5 for the constraint conditions required for the two experiments; constraint condition plates 5 with different constraint conditions can be made according to different experimental requirements, but the thickness should be 4mm to ensure that the constraint condition plate can be inserted into the constraint condition plate slot 402, the length is 50mm, the distance with the front and rear supporting walls 401 is the same, and the width should be determined according to the height of different types of cylindrical batteries.

[0069] Specifically, the constraint plate is customized according to your own needs. Here we only cite two working conditions: the middle round hole and the middle square hole. You can also have no constraint plate, or other constraint plates that simulate working conditions that meet your needs. The shaft is designed to ensure that when there is no constraint plate, the battery sleeve does not constrain the battery from being damaged. The purpose of setting different constraints is to explore the impact of cylindrical batteries under different constraint conditions. By comparing the damage under different constraint conditions, we can know under which conditions the battery is less damaged, and provide guidance for the design of battery module protection frames in the future.

[0070] Furthermore, the cylindrical battery dynamic data collection mechanism 6 includes:

[0071] The shaft connection groove 601, the cylindrical battery sleeve 602, the sleeve through hole 603, the sleeve groove 604, the cylindrical battery fixing threaded hole structure 605, the acoustic emission device 606, the fixing bolt 607, the anti-skid rubber head 608 of the fixing bolt 607, the acoustic emission device fixing threaded hole structure 609, the voltage sensor fixing threaded hole structure 610, the voltage sensor sleeve 611, the voltage sensor sleeve anti-skid rubber layer 612, the voltage sensor wire through hole 613 and the shaft fixing bolt 614;

[0072] The cylindrical battery sleeve 602 fixes the shaft connecting groove 601 on the corresponding shaft 404 through the sleeve through hole 603 and the shaft 404 fixing bolt 607, the fixing bolt 607 is connected to the cylindrical battery fixing threaded hole structure 605, the anti-slip rubber head 608 of the fixing bolt 607 is arranged at the lower end of the fixing bolt 607, the sound emission device 606 is placed in the sound emission device fixing threaded hole structure 609 and the fixing bolt 607 is connected to the sound emission device fixing threaded hole structure 609, the voltage sensor sleeve 611 is provided with a voltage sensor wire through hole 613 at the center, and the inner surface of the voltage sensor wire through hole 613 is coated with There is a voltage sensor sleeve anti-slip rubber layer 612, a sleeve through hole 603 and a sleeve fixing bolt 607 fixed to the rotating shaft 404, the voltage sensor is connected to the voltage sensor fixing bolt 607 hole structure of the cylindrical battery sleeve 602 through its wire and the voltage sensor sleeve 611, the sound emission device 606 is placed in the sound emission device fixing threaded hole structure 609, the voltage sensor fixing threaded hole structure 610 is connected to the voltage sensor sleeve 611, the fixing bolt 607 and the cylindrical battery fixing threaded hole structure 605 are fixed to the side of the cylindrical battery to be tested, and the sleeve groove 604 is respectively sleeved on both ends of the cylindrical battery to be tested.

[0073] Specifically, the cylindrical battery dynamic data acquisition mechanism 6 is fixed to the rotating shaft 404 through the sleeve through hole 603 and the sleeve fixing bolt 607 to ensure the fixation and rotation of the cylindrical battery dynamic data acquisition mechanism 6. The voltage sensor is connected to the voltage sensor fixing bolt 607 hole of the cylindrical battery sleeve 602 through its wire and the voltage sensor sleeve 611 to ensure the fixation of the voltage sensor at the positive and negative poles of the cylindrical battery, thereby ensuring the collection of voltage sensor data. The acoustic emission device 606 is placed in the acoustic emission device fixing threaded hole structure 609 and fixed to the side of the battery by the fixing bolt 607 to ensure the collection of data from the acoustic emission device 606. The entire cylindrical battery dynamic data acquisition mechanism 6 is fixed to the side of the cylindrical battery by the fixing bolt 607 and the cylindrical battery fixing threaded hole structure 605 to ensure the fixation of the cylindrical battery.

[0074] Specifically, the voltage sensor is outside, and two wires are connected to the positive and negative poles of the battery through this device.

[0075] like Figure 7As shown, it is a schematic diagram of the cylindrical battery dynamic data acquisition mechanism 6. The two cylindrical battery sleeves 602 respectively sleeve the shaft connection grooves 601 on the two shafts 404, and are fixed to the shafts 404 through the sleeve through holes 603 and the shaft fixing bolts 614; the fixing bolts 607 are connected to the cylindrical battery fixing threaded hole structure 605, and the fixing bolt anti-slip rubber head 608 at the end thereof is pressed against the side of the cylindrical battery to fix the cylindrical battery; the acoustic emission device 606 is placed in the acoustic emission device fixing threaded hole structure 609, and is connected to the acoustic emission device fixing threaded hole structure 609 by the fixing bolts 607, and the end of the acoustic emission device 606 is pressed against the side of the cylindrical battery. surface, to ensure the data collection of the acoustic emission device; a voltage sensor wire through hole 613 is opened in the center of the voltage sensor sleeve 611, and a voltage sensor sleeve anti-slip rubber layer 612 is coated on its inner surface to ensure that it and the voltage sensor wire will not slide relative to each other, thereby fixing the voltage sensor; the voltage sensor fixing threaded hole structure 610 is connected to the voltage sensor sleeve 611 to ensure that the two wires of the voltage sensor are respectively fixed on the positive and negative electrodes of the cylindrical battery, thereby ensuring the data collection of the voltage sensor; the sleeve grooves 604 of the two cylindrical battery dynamic data collection mechanisms 6 are respectively sleeved on the two ends of the cylindrical battery to ensure the data collection of the cylindrical battery.

[0076] like Figure 8 As shown, it is a battery safety status monitoring under one condition. The whole invention device first installs the cylindrical battery required for the experiment, and then fixes the bottom plate of the whole invention device to the bottom plate in the experimental cabin of the drop hammer tester through hexagonal bolts; after fixing the whole invention device, select the counterweight weights, punches (a ball head punch is selected in the figure) and the experimental height (or the required impact energy) required for the experiment, fix the weights on the weight frame of the drop hammer tester, connect the punches, close the upper and lower hatches of the drop hammer tester to ensure safety, and use CNC to control the punches to position, lift the hammer, drop the hammer to impact the battery, and lift the hammer again to complete an experiment; during the experiment, the modular battery safety status monitoring method is used to collect various data of the cylindrical battery in the experiment, including force, displacement, energy, voltage, vibration, temperature and other information, and after data analysis, the battery safety status is monitored.

[0077] like Fig. 9As shown in the figure, it is a line graph of experimental data collection. The data collected in the figure include force, displacement and voltage; as the force on the battery increases, it also begins to displace, while the battery voltage remains basically unchanged, and the battery is not failed at this time; as the force reaches the maximum value, the battery voltage drops sharply; because the battery structure is damaged and the carrying capacity is weakened, the force gradually drops to zero after reaching the maximum value, while the displacement of the battery is still increasing, and the voltage drops to almost zero. At this time, the battery is severely damaged and the battery fails. Through this invention device, various data of cylindrical batteries can be collected and monitored in real time, and the purpose of monitoring the safety of cylindrical batteries can be achieved by analyzing the data.

[0078] like Fig.10 The figure shows the specific operation flow chart of the whole invention. First, it is necessary to customize the basic parts and specific parts separately, wherein the basic parts include the parts in the base plate 1, the slide rail positioning plate 2, the slide rail slider mechanism 3 and the supporting wall shaft mechanism 4, whose sizes do not change with the experimental cylindrical battery size and experimental constraints, and only one size needs to be customized, and the specific parts include the parts in the constraint condition plate 5 and the structure 6 of the cylindrical battery dynamic data acquisition mechanism, whose sizes need to change with the experimental cylindrical battery size and experimental constraints, and multiple sets of modular parts with different sizes and structures need to be customized according to requirements; after the parts are prepared, it is necessary to assemble the slide rail slider mechanism on the base plate, which is connected to the base plate by bolts, and the slide rail baffle is positioned; after the slide rail slider mechanism is fixed, the supporting wall shaft mechanism needs to be fixed on the slider by tightening screws, so far, all the fixed parts that are not related to the changing conditions have been fixed, and the above contents are kept unchanged for multiple experiments; before starting an experiment, determine the size of the cylindrical battery used in this experiment; after the determination is completed, according to The height of the cylindrical battery used is adjusted to the spacing between the sliders, and a slider positioning plate is installed to ensure the accuracy of the slider position; two suitable cylindrical battery dynamic data acquisition mechanisms are selected according to the diameter of the cylindrical battery used, and are respectively sleeved on the ends of the battery; at the same time, the voltage sensor sleeve and fixing bolts are used to fix the voltage sensor to the positive and negative poles of the cylindrical battery and the side of the cylindrical battery, and the cylindrical battery is fixed from the side with fixing bolts; after the cylindrical battery dynamic data acquisition mechanism is fixed to the cylindrical battery, it is fixed to the two rotating shafts by bolts, and the constraint condition plate required for the experiment is fixed to the constraint condition plate slot of the supporting wall; at this point, the entire invention device has been fixed on the bottom plate, and then the bottom plate is fixed to the experimental equipment to conduct the experiment; after completing an experiment, if it is necessary to conduct the experiment again, first remove the bottom plate of the entire invention device from the experimental equipment, and then remove the data acquisition mechanism and the slider positioning plate from the bottom plate to reselect the cylindrical battery model used for the experiment again.

[0079] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0080] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A cylindrical battery dynamic data acquisition device, characterized in that: include: A bottom plate and a slider positioning plate, a slide rail slider mechanism, a support wall shaft mechanism, a constraint condition plate and a cylindrical battery dynamic data acquisition mechanism all fixed to the bottom plate; The bottom plate is used to fix the slider positioning plate, the slide rail slider mechanism, the supporting wall rotating shaft mechanism, the constraint condition plate and the cylindrical battery dynamic data acquisition mechanism; the slider positioning plate is used to position the slider after the distance is adjusted in the slide rail slider mechanism; the slide rail slider mechanism is used to adjust the distance between the supporting wall rotating shaft mechanism and the cylindrical battery dynamic data acquisition mechanism; the supporting wall rotating shaft mechanism is used to support the constraint condition plate and the cylindrical battery dynamic data acquisition mechanism; the constraint condition plate is used to provide different constraint conditions; and the cylindrical battery dynamic data acquisition mechanism is used to collect experimental data of the cylindrical battery to be tested.

2. A cylindrical battery dynamic data acquisition device according to claim 1, characterized in that: The bottom plate is provided with a fixing through hole, a first threaded through hole, a second threaded through hole, a third threaded through hole, and a slide rail baffle; The fixing through hole is connected to the experimental equipment through bolts, the first threaded through hole is used to fix the slide rail baffle on the base plate, the second threaded through hole is used to connect with the slide rail in the slide rail slider mechanism, the third threaded through hole is used to connect with the slider positioning plate, and the slide rail baffle is used to fix the slider on the slide rail, wherein the slide rail baffle bolts and two slide rail baffle through holes are provided on the slide rail baffle, and the slide rail baffle through holes are used to fix to the base plate through the slide rail baffle bolts.

3. A cylindrical battery dynamic data acquisition device according to claim 1, characterized in that: The slider positioning plate comprises: A set screw, a slider positioning plate groove and a slider positioning plate through hole; The through hole of the slider positioning plate is connected to the bottom plate through the set screw, and the groove of the slider positioning plate is sleeved on the slide rail.

4. A cylindrical battery dynamic data acquisition device according to claim 1, characterized in that: The slide rail and slider mechanism comprises: Slide rails, slide rail countersunk through holes, slide rail ball tracks, slider set screws, sliders, balls, slider-dustproof baffle threaded holes, slider-support wall threaded holes, slider dustproof baffles and slide rail hexagon socket countersunk bolts; The slide rails are provided with two, and the slide rails are symmetrically fixed to the base plate by means of the slide rail hexagon countersunk bolts, the slide rail countersunk through holes and the slide rail ball tracks. The sliders are correspondingly provided on the slide rails, and the balls are provided on the slide rail ball tracks. The slider dustproof baffle is fixed to both sides of the slider by means of the slider fixing screws and the slider-dustproof baffle threaded holes, and the slider-supporting wall threaded holes are used for fixing the slider between the supporting walls in the supporting wall rotating shaft mechanism.

5. A cylindrical battery dynamic data acquisition device according to claim 1, characterized in that: The supporting wall rotating shaft mechanism comprises: Support wall, constraint plate slot, deep groove ball bearing with sealing ring on one side, rotating shaft, rotating shaft threaded hole, support wall bearing slot, support wall threaded hole and support wall set screw; The number of the supporting walls is 4 and they are fixed to the corresponding upper part of the slider through the corresponding threaded holes of the supporting walls and the set screws of the supporting walls. The bearing slots of the supporting walls are correspondingly arranged on the supporting walls. The deep groove ball bearing with a sealing ring on one side is correspondingly placed in the bearing slots of the supporting walls, and the side with the sealing ring is placed on the outside. The number of the rotating shafts is 2, and the shaft ends of the rotating shafts are correspondingly inserted into the inner diameter of the bearings. The rotating shafts are provided with threaded holes of the rotating shafts. The constraint plate slots are arranged at preset positions of the supporting walls.

6. A cylindrical battery dynamic data acquisition device according to claim 1, characterized in that: The constraint condition plate is provided with a middle round hole and a middle square hole; The middle round hole and the middle square hole are respectively arranged at a first preset position and a second preset position of the constraint condition plate.

7. A cylindrical battery dynamic data acquisition device according to claim 1, characterized in that: The cylindrical battery dynamic data acquisition mechanism comprises: A shaft connecting groove, a cylindrical battery sleeve, a sleeve through hole, a sleeve groove, a cylindrical battery fixing threaded hole structure, an acoustic emission device, a fixing bolt, an anti-skid rubber head of the fixing bolt, a fixing threaded hole structure of the acoustic emission device, a fixing threaded hole structure of the voltage sensor, a voltage sensor sleeve, an anti-skid rubber layer of the voltage sensor sleeve, a voltage sensor wire through hole and a shaft fixing bolt; The cylindrical battery sleeve fixes the shaft connecting groove on the corresponding shaft through the sleeve through hole and the shaft fixing bolt, the fixing bolt is connected to the cylindrical battery fixing threaded hole structure, the fixing bolt anti-skid rubber head is arranged at the lower end of the fixing bolt, the sound emission device is placed in the sound emission device fixing threaded hole structure and the fixing bolt is connected to the sound emission device fixing threaded hole structure, a voltage sensor wire through hole is opened in the center of the voltage sensor sleeve, and a layer of voltage sensor sleeve anti-skid rubber layer is coated on the inner surface of the voltage sensor wire through hole, the sleeve through hole and the sleeve fixing bolt are fixed to the shaft, the voltage sensor is connected to the voltage sensor fixing bolt hole structure of the cylindrical battery sleeve through its wire and the voltage sensor sleeve, the sound emission device is placed in the sound emission device fixing threaded hole structure, the voltage sensor fixing threaded hole structure is connected to the voltage sensor sleeve, the fixing bolt and the cylindrical battery fixing threaded hole structure are fixed to the side of the cylindrical battery to be tested, and the sleeve groove is respectively sleeved on both ends of the cylindrical battery to be tested.

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