Remodeling device and formation and capacity grading equipment

Abstract

The embodiment of the utility model provides a remodeling device and formation and capacity grading equipment, the remodeling device comprises a support, the support comprises a base, a lifting frame and a top frame which are connected with one another, and the lifting frame is configured to be capable of moving in the vertical direction relative to the top frame; the probe mechanism is arranged on the top frame, and the probe mechanism comprises a positive electrode probe assembly and a negative electrode probe assembly; the model changing mechanism comprises a first distance adjusting assembly and a second distance adjusting assembly, the first distance adjusting assembly is connected with the positive electrode probe assembly and the negative electrode probe assembly, and the first distance adjusting assembly is configured to change the distance between the positive electrode probe assembly and the negative electrode probe assembly in the first direction; the second distance adjusting assembly is configured to adjust the moving range of the top frame relative to the base in the vertical direction. According to the remodeling device disclosed by the invention, the stepless adjustment of the horizontal distance and the working height of the probe assembly is realized, and the non-productive downtime required by the formation and capacity grading equipment for switching among different battery specifications is shortened.

Description

Technical Field

[0001] This application relates to the field of battery production equipment technology, and in particular to a type-changing device and a formation and capacity testing device. Background Technology

[0002] In the manufacturing process of prismatic lithium batteries, formation and capacity testing are crucial steps. To maximize equipment utilization efficiency, formation and capacity testing equipment typically needs to be compatible with different battery models and sizes. Key components on the formation and capacity testing equipment, such as the probe assembly for electrical connections and the negative pressure assembly for vacuuming, need to be frequently repositioned according to changes in battery models.

[0003] In practical applications, differences in battery specifications are not only reflected in the spacing between the terminals, but also in the height of the battery itself or the thickness of the tray supporting the battery. However, most existing adjustment solutions focus on solving the problem of horizontal spacing adjustment, while adaptation in the vertical direction usually requires separate handling. This separate design leads to a longer overall changeover time and makes it difficult to guarantee the final relative positional accuracy after adjustment in both dimensions, thus limiting the improvement of changeover efficiency. Utility Model Content

[0004] This application discloses a type-changing device and a formation and capacity-building equipment, which realizes stepless adjustment of the horizontal spacing and working height of the probe assembly, solves the technical problem that multi-dimensional size adaptation requires step-by-step independent adjustment, and shortens the non-productive downtime required for the type-changing device to switch between different battery specifications.

[0005] To achieve the above objectives, a first aspect of this application discloses a type-changing device, the type-changing device comprising:

[0006] The support includes a base, a lifting frame, and a top frame connected to each other, the lifting frame being configured to move vertically relative to the top frame;

[0007] A probe mechanism is movably disposed on the top frame. The probe mechanism includes a positive probe assembly and a negative probe assembly, which are arranged at intervals along a first direction.

[0008] The changing mechanism includes a first adjusting component and a second adjusting component. The first adjusting component is disposed on the top frame and connected to the positive probe component and the negative probe component. The first adjusting component is configured to change the distance between the positive probe component and the negative probe component along the first direction. The second adjusting component is disposed on the lifting frame and configured to adjust the range of movement of the top frame relative to the lifting frame along the vertical direction.

[0009] In some embodiments, the switching mechanism further includes: a first driving component connected to the first adjusting component, the first driving component being configured to drive the first adjusting component to move along the first direction to change the spacing between the positive electrode probe component and the negative electrode probe component along the first direction.

[0010] In some embodiments, the first adjustment component includes: a first moving unit connected to the first driving component, the first moving unit including a first fixed structure and a first movable structure connected to each other, the first fixed structure being disposed on the top frame, the first movable structure being connected to the positive electrode probe component, and the first movable structure being configured to move relative to the first fixed structure along the first direction; and a second moving unit connected to the first driving component, the second moving unit including a second fixed structure and a second movable structure connected to each other, the second fixed structure being disposed on the top frame, the second movable structure being connected to the negative electrode probe component, and the second movable structure being configured to move relative to the second fixed structure along the first direction; wherein the direction in which the first moving unit drives the positive electrode probe component to move is opposite to the direction in which the second moving unit drives the negative electrode probe component to move.

[0011] In some embodiments, the first fixing structure includes a first lead screw extending along the first direction and connected to the first driving assembly. The first lead screw is configured to rotate about its axis under the drive of the first driving assembly. The first movable structure includes a first nut screwed onto the first lead screw and fixedly disposed relative to the positive electrode probe assembly. The first nut is configured to move along the extension direction of the first lead screw when the first lead screw rotates. The second fixing structure includes a second lead screw extending along the first direction and connected to the first driving assembly. The second lead screw is configured to rotate about its axis under the drive of the first driving assembly. The second movable structure includes a second nut screwed onto the second lead screw and fixedly disposed relative to the negative electrode probe assembly. The second nut is configured to move along the extension direction of the second lead screw when the second lead screw rotates.

[0012] In some embodiments, the first drive assembly includes a first drive member connected to the first lead screw and the second lead screw, wherein the thread direction on the surface of the first lead screw is opposite to the thread direction on the surface of the second lead screw, and when the first drive member drives the first lead screw and the second lead screw to rotate, the first nut and the second nut move in opposite directions.

[0013] In some embodiments, the number of the first adjustment components is two, and the two first adjustment components are respectively disposed at opposite ends of the probe mechanism along the second direction. One of the first adjustment components is connected to the first drive component. The changing mechanism further includes a transmission component, the two ends of which are respectively connected to the two first adjustment components. The transmission component is configured to follow the movement of the first adjustment component connected to the first drive component and drive the other first adjustment component to move. The second direction intersects with the first direction.

[0014] In some embodiments, the second distance adjustment component includes: a limiting member disposed on the top frame; and a mating member disposed on the lifting frame. The mating member is configured to correspond to the limiting member. When the top frame and the lifting frame move relative to each other in the vertical direction, the mating member is configured to abut against the limiting member to prevent the top frame and the lifting frame from getting close to each other.

[0015] In some embodiments, the mating member includes a main body and a lifting part, the limiting surface is located on the lifting part, the main body is disposed on the lifting frame, and the lifting part is configured to move vertically relative to the main body to change the distance between the limiting surface and the lifting frame.

[0016] In some embodiments, the changing mechanism further includes a second driving component disposed on the base and connected to the lifting part. The second driving component is configured to drive the lifting part to move vertically relative to the main body to change the distance between the limiting surface and the lifting frame.

[0017] In some embodiments, the number of mating parts is multiple, and the second drive assembly includes: multiple transmission rods, each of which is connected to the lifting portion of the multiple mating parts; and a second drive member, which is connected to the multiple transmission rods and configured to drive the transmission rods to rotate, thereby causing the lifting portion to move vertically relative to the main body.

[0018] In some embodiments, the switching mechanism further includes a connecting component comprising two connectors, one of which is connected to the first movable structure to move with the first movable structure, and the other connector is connected to the second movable structure to move with the second movable structure, wherein one connector is connected to the positive electrode probe assembly and the other connector is connected to the negative electrode probe assembly.

[0019] In some embodiments, both the first movable structure and the second movable structure have a first mounting hole that extends through the first movable structure and the second movable structure along the first direction; the connector includes a first connecting portion having a second mounting hole that extends through the first connecting portion along the first direction; the connecting assembly further includes a fastener configured to pass through the first mounting hole and the second mounting hole to connect the connector to the first movable structure or the second movable structure.

[0020] In some embodiments, the positive electrode probe assembly includes a positive electrode mounting plate and a positive electrode probe, the positive electrode probe being disposed on the positive electrode mounting plate, and the positive electrode mounting plate being configured to be detachably connected to the connector; the negative electrode probe assembly includes the negative electrode mounting plate and a negative electrode probe, the negative electrode probe being disposed on the negative electrode mounting plate, and the negative electrode mounting plate being configured to be detachably connected to the connector; both the positive electrode mounting plate and the negative electrode mounting plate include a connection hole, and the connector further includes a second connection portion, the second connection portion being connected to the first connection portion, and the second connection portion being configured to be inserted into the connection hole so that the connector is connected to the positive electrode mounting plate or the negative electrode mounting plate.

[0021] A second aspect of this application discloses a chemical composition and capacity preparation device, the chemical composition and capacity preparation device comprising: a housing, the housing including an inspection port; and a type-changing device as described in the first aspect;

[0022] In some embodiments, the changing device is disposed within the housing, and the changing device includes a first drive assembly and a second drive assembly, both of which are disposed on the side of the bracket facing the access port.

[0023] Compared with the prior art, the beneficial effects of this application are:

[0024] The replacement device provided in this application, through the cooperation of the bracket, probe mechanism and replacement mechanism, realizes the replacement of the positive electrode probe assembly and the negative electrode probe assembly in the first direction and the vertical direction. It solves the technical problems of the prior art, which require step-by-step and independent adjustment of the horizontal spacing and the height spacing, resulting in cumbersome operation, low efficiency and difficulty in ensuring the final relative position accuracy. It realizes the simultaneous completion of multi-dimensional size adaptation in a single replacement process, shortens the replacement time of the replacement device and improves the overall efficiency of battery production. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is one of the structural schematic diagrams of the replacement device provided in the embodiments of this application;

[0027] Figure 2 This is a second schematic diagram of the structure of the type-changing device provided in the embodiments of this application;

[0028] Figure 3 This is the third schematic diagram of the structure of the type-changing device provided in the embodiments of this application;

[0029] Figure 4 for Figure 1 A magnified view of a portion of point A in the middle;

[0030] Figure 5 A schematic diagram showing the connection between the connector and the first movable structure provided in the embodiments of this application;

[0031] Figure 6 This is a schematic diagram showing the connection between the connector and the second movable structure provided in an embodiment of this application;

[0032] Figure 7 This is a schematic diagram illustrating the connection between the connector and the movable structure provided in the embodiments of this application;

[0033] Figure 8 Fourth schematic diagram of the structure of the type-changing device provided in the embodiments of this application;

[0034] Figure 9 This is a schematic diagram of the structure of the first pitch adjustment component and the transmission component provided in the embodiments of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] X - First direction; 100 - Changing device; 1 - Support; 11 - Lifting frame; 12 - Top frame; 2 - Probe mechanism; 21 - Positive probe assembly; 22 - Negative probe assembly; 23 - Negative pressure assembly; 3- Changing mechanism; 31- First adjusting component; 311- First moving unit; 3111- First fixed structure; 3112- First movable structure; 312- Second moving unit; 3121- Second fixed structure; 3122- Second movable structure; 313- First mounting hole; 32- Second adjusting component; 321- Limiting component; 322- Mating component; 3221- Lifting part; 3221a- Limiting surface; 3222- Main body; 33- First driving component; 331- First driving component; 34- Second driving component; 341- Transmission rod; 342- Second driving component; 35- Connecting component; 351- Connecting component; 3511- First connecting part; 35111- Second mounting hole; 3512- Second connecting part; 4- Transmission component. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] In this application, the terms "upper," "lower," "top," "bottom," "inner," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0040] Furthermore, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0041] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0042] In the manufacturing process of square lithium batteries, formation and capacity grading are crucial and indispensable core processes. The formation process involves the initial charge and discharge of the battery after electrolyte injection, forming a stable solid electrolyte interface film on the electrode surface. This activates the battery and ensures its performance, safety, and cycle life for subsequent use. The capacity grading process, following formation, involves charge and discharge tests to measure and screen key parameters such as the actual capacity and internal resistance of the batteries. Based on the test results, the batteries are precisely grouped to reduce the bottleneck effect after assembly and ensure the consistency of the overall battery pack performance.

[0043] To maximize equipment utilization efficiency and reduce the cost of single equipment investment, modern battery manufacturers generally require formation and capacity testing equipment to have good flexible production capabilities. This means that the same equipment needs to be able to accommodate the alternating production of multiple different models and sizes of prismatic batteries. The probe assembly used to electrically connect with the battery terminals to complete charging and discharging, and the negative pressure assembly used to evacuate the battery during formation, need to be able to quickly and accurately adjust their relative positions according to the battery model being produced, in order to adapt to changes in terminal spacing, battery thickness, and external dimensions of different batteries.

[0044] In existing technologies, the aforementioned replacement requirements typically rely on manual adjustment. Specifically, when a battery needs to be replaced, the operator must use specific tools to manually loosen and loosen the mechanical fasteners of the locking probe assembly and the negative pressure assembly one by one. Then, relying on experience and simple measuring tools, the operator pushes the probe assembly along the slide rail or guide shaft to near the target position for preliminary tightening and testing. If the position does not meet the requirements, the process of loosening, fine-tuning, and tightening must be repeated.

[0045] The adjustment precision in this purely manual mode depends heavily on the operator's skill level, resulting in poor consistency and susceptibility to human error, which affects test quality. Furthermore, the entire adjustment process is time-consuming and involves a significant amount of physical labor, leading to a reduction in the effective operating time of the formation and capacity testing equipment and low production efficiency. Faced with increasingly frequent line changeovers, this mode not only places a heavy burden on operators but also struggles to meet the production cycle requirements of modern intelligent manufacturing.

[0046] Based on this, this application discloses a type-changing device, which realizes rapid and precise automatic switching between the positions of the probe and the negative pressure component through an automatic stepless adjustment mechanism driven by a motor, avoiding the time-consuming and laborious traditional manual adjustment and operation interruption, and shortening the type-changing time.

[0047] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0048] Please see Figure 1 , Figure 1 This is one of the structural schematic diagrams of the battery replacement device 100 provided in the embodiments of this application. The embodiments of this application disclose a battery replacement device 100, which includes: a support 1, comprising a base, a lifting frame 11, and a top frame 12 connected to each other, the lifting frame 11 being configured to move vertically relative to the top frame 12; and a probe mechanism 2, movably disposed on the top frame 12, the probe mechanism 2 including a positive electrode probe assembly 21 and a negative electrode probe assembly 22, the positive electrode probe assembly 21 and the negative electrode probe assembly 22 being arranged at intervals along a first direction X, the positive electrode probe assembly 21 being used for electrical connection with the positive electrode of the battery, and the negative electrode probe assembly 22 being used for electrical connection with the negative electrode of the battery; the replacement... Mechanism 3, the changing mechanism 3 includes a first adjusting component 31 and a second adjusting component 32. The first adjusting component 31 is disposed on the top frame 12 and is connected to the positive probe component 21 and the negative probe component 22. The first adjusting component 31 is configured to drive the positive probe component 21 and the negative probe component 22 to move along the first direction X, so as to change the distance between the positive probe component 21 and the negative probe component 22 along the first direction X. The second adjusting component 32 is disposed on the lifting frame 11 and is configured to adjust the range of vertical movement of the top frame 12 relative to the lifting frame 11.

[0049] The bracket 1 serves as the supporting foundation for the entire changing device 100, providing a stable installation platform and precise positioning reference for the probe mechanism 2 and the changing mechanism 3. This ensures that each component maintains the correct relative position during dynamic adjustment. The rigid support structure of the bracket 1 effectively guarantees the stability and service life of the changing device 100 under long-term and frequent changing conditions.

[0050] The probe mechanism 2 is movably mounted on the top frame 12. The probe mechanism 2 includes a positive electrode probe assembly 21 and a negative electrode probe assembly 22. The positive electrode probe assembly 21 and the negative electrode probe assembly 22 are arranged at intervals along a first direction X, and are used to establish reliable electrical connections with the positive and negative electrodes of the battery, respectively, to complete the charge-discharge test of the battery. By movably mounting the probe mechanism 2 on the top frame 12, a structural basis is provided for the synchronous adjustment of the positions of the positive and negative electrode probe assemblies 22 and the negative pressure assembly 23.

[0051] Preferably, the probe mechanism 2 may further include a negative pressure component 23, which is also disposed between or to the side of the positive and negative electrode probe components 22 along the first direction X. The negative pressure component 23 is used to form a sealed connection with the battery's liquid injection port and to perform a vacuum operation.

[0052] In one optional embodiment, multiple sets of probe mechanisms 2 can be provided, and these probe mechanisms 2 are arranged at intervals along the first direction X. The arrangement of multiple sets of probe mechanisms 2 enables the type-changing device 100 to perform type-changing and capacity-forming operations on multiple batteries simultaneously, thereby improving the processing capacity and production efficiency of the type-changing device 100. Each set of probe mechanisms 2 independently includes a positive electrode probe assembly 21 and a negative electrode probe assembly 22, and is respectively connected to a first drive assembly 33 through a corresponding first adjustment assembly 31, or through a clever transmission design, the same first drive assembly 33 can achieve linkage control via different first adjustment assemblies 31.

[0053] The switching mechanism 3 is mounted on the bracket 1 and includes a first adjusting component 31 and a first driving component 33. The first adjusting component 31 is mounted on the top frame 12 and is connected to the positive electrode probe component 21 and the negative electrode probe component 22. It is configured to drive the positive electrode probe component 21 and the negative electrode probe component 22 to reciprocate along a first direction X. This connection method ensures that the positive electrode probe component 21 and the negative electrode probe component 22 maintain coordinated movement during the switching process, thereby changing the distance between the positive electrode probe component 21 and the negative electrode probe component 22 to accommodate batteries of different specifications.

[0054] The second adjustment component 32 allows the battery changeover device 100 to flexibly adapt to changes in the height of the battery tray or the thickness differences of different battery models. When production needs to switch to batteries of different specifications, the second adjustment component 32 can precisely adjust the downward pressure distance of the probe mechanism 2 to ensure that the positive electrode probe, negative electrode probe, and negative pressure nozzle can all form stable and reliable contact and seal with the corresponding interface of the battery. This solves the problem of limited compatibility of the battery changeover device 100 due to the lack of height adjustment capability in the prior art, and avoids the cumbersome operation of frequently changing or manually adjusting the tray to adapt to different heights.

[0055] During use, when the probe mechanism 2 needs to be adjusted to accommodate batteries of different specifications, the first spacing adjustment component 31 drives the positive electrode probe assembly 21 and the negative electrode probe assembly 22 to produce corresponding displacements, causing the positive electrode probe assembly 21 and the negative electrode probe assembly 22 to move relative to or away from each other along the first direction X, thereby achieving the preset spacing configuration. When the positive electrode probe assembly 21 and the negative electrode probe assembly 22 reach the target position, the positive electrode probe assembly 21 and the negative electrode probe assembly 22 are precisely aligned with the corresponding interface of the battery.

[0056] When the working height of the probe mechanism 2 needs to be adjusted to accommodate batteries or trays of different specifications, the second adjusting component 32 can adjust the downward movement limit of the top frame 12 relative to the lifting frame 11. When the lifting frame 11 and the top frame 12 carrying the probe mechanism 2 approach each other, the relative movement stroke is limited by the adjusted second adjusting component 32, causing the probe mechanism 2 to stop at a preset height position. This ensures that the positive electrode probe assembly 21 and the negative electrode probe assembly 22 form a stable and reliable contact and seal with the corresponding battery interface, thus completing the automatic adjustment of the working height.

[0057] Thus, the shape-changing device 100 provided in this application embodiment, through the cooperation of the bracket 1, the probe mechanism 2 and the shape-changing mechanism 3, realizes the shape-changing of the positive electrode probe assembly 21 and the negative electrode probe assembly 22 in the first direction X and the vertical direction. It solves the technical problems of the prior art, which require the horizontal spacing and the height spacing to be adjusted step by step and independently, resulting in cumbersome operation, low efficiency and difficulty in ensuring the final relative position accuracy. It realizes the simultaneous completion of multi-dimensional size adaptation in a single shape-changing process, shortens the shape-changing time of the shape-changing device and improves the overall efficiency of battery production.

[0058] Please see Figure 1 In some embodiments, the switching mechanism 3 further includes a first driving component 33, which is connected to the first adjusting component 31. The first driving component 33 is configured to drive the first adjusting component 31 to move along the first direction X to change the spacing between the positive probe component 21 and the negative probe component 22 along the first direction X.

[0059] The first drive component 33 is connected to the first adjustment component 31. The first drive component 33 is configured to drive the first adjustment component 31 to move precisely, thereby changing the distance between the positive probe component 21 and the negative probe component 22 along the first direction X. The first drive component 33 provides a stable and reliable power source, and by precisely controlling the displacement of the first adjustment component 31, it achieves synchronous, precise, and stepless adjustment of the distance between the positive probe component 21 and the negative probe component 22.

[0060] Please see Figure 2 and Figure 3 , Figure 2 This is a second schematic diagram of the structure of the type-changing device 100 provided in the embodiments of this application; Figure 3This is the third schematic diagram of the structure of the type-changing device 100 provided in the embodiments of this application. In some embodiments, the first adjustment component 31 includes: a first moving unit 311 connected to the first driving component 33, the first moving unit 311 including a first fixed structure 3111 and a first movable structure 3112 connected to each other, the first fixed structure 3111 being disposed on the top frame 12, the first movable structure 3112 being connected to the positive electrode probe component 21, and the first movable structure 3112 being configured to move relative to the first fixed structure 3111 along a first direction X; and a second moving unit 312 connected to the first driving component 33, the second moving unit 312 including a second fixed structure 3121 and a second movable structure 3122 connected to each other, the second fixed structure 3121 being disposed on the top frame 12, the second movable structure 3122 being connected to the negative electrode probe component 22, and the second movable structure 3122 being configured to move relative to the second fixed structure 3121 along a first direction X; wherein the direction in which the first moving unit 311 drives the positive electrode probe component 21 to move is opposite to the direction in which the second moving unit 312 drives the negative electrode probe component 22 to move.

[0061] When the probe spacing needs to be adjusted to accommodate batteries of different sizes, the power provided by the first drive assembly 33 can act on the first moving unit 311 and the second moving unit 312, driving the first movable structure 3112 of the first moving unit 311 and the second movable structure 3122 of the second moving unit 312 to move in opposite directions along the first direction X.

[0062] The independent arrangement of the first moving unit 311 and the second moving unit 312 ensures that the moving paths of the positive probe assembly 21 and the negative probe assembly 22 do not interfere with each other, making the movement process smoother and more reliable. The first fixing structure 3111 of the first moving unit 311 and the second fixing structure 3121 of the second moving unit 312 are respectively set on the top frame 12, providing an independent and stable support foundation for the two moving units, enhancing the rigidity and stability of the entire first adjusting assembly 31 under stress, thereby helping to improve the positional accuracy of the probe assembly after it has moved into place.

[0063] From the perspective of adjustment efficiency, the independent setting of the first moving unit 311 and the second moving unit 312 realizes the bidirectional synchronous adjustment of the distance between the positive probe assembly 21 and the negative probe assembly 22. Under the same drive input, the total adjustment stroke is effectively distributed to the two moving parts, which shortens the time required to complete a specific distance change and improves the efficiency of the changeover operation.

[0064] Optionally, the first moving unit 311 can be a lead screw and nut mechanism, a gear and rack mechanism, or a combination of a linear motor and a slide rail. Similarly, the second moving unit 312 can be a lead screw and nut mechanism, a gear and rack mechanism, or a combination of a linear motor and a slide rail.

[0065] Please see Figure 4 , Figure 4 for Figure 1 A partially enlarged schematic diagram at point A. In some embodiments, the first fixed structure 3111 includes a first lead screw extending along a first direction X, the first lead screw being connected to a first drive assembly 33, and the first lead screw being configured to rotate about its axis under the drive of the first drive assembly 33; the first movable structure 3112 includes a first nut screwed onto the first lead screw, and the first nut and the positive electrode probe assembly 21 are relatively fixedly disposed, the first nut being configured to move along the extension direction of the first lead screw when the first lead screw rotates.

[0066] The second fixed structure 3121 includes a second lead screw that extends along a first direction X. The second lead screw is connected to a first drive assembly 33 and is configured to rotate about the axis of the second lead screw under the drive of the first drive assembly 33. The second movable structure 3122 includes a second nut that is screwed onto the second lead screw and is fixedly disposed relative to the negative electrode probe assembly 22. The second nut is configured to move along the extension direction of the second lead screw when the second lead screw rotates.

[0067] By employing a lead screw and nut mechanism, the rotational motion output by the first drive assembly 33 is converted into linear motion of the first nut and the second nut along the first direction X. Driven by the first drive assembly 33, the first lead screw rotates around its own axis, forcing the first nut screwed onto it to produce axial displacement, thereby moving the positive electrode probe assembly 21, which is fixedly positioned relative to it. Similarly, the rotation of the second lead screw drives the second nut and moves the negative electrode probe assembly 22. This motion conversion method has high transmission accuracy and positioning reliability, enabling precise control of the positions of the positive electrode probe assembly 21 and the negative electrode probe assembly 22, ensuring accurate alignment of the probes with the battery terminals.

[0068] Furthermore, to ensure that the movement direction of the positive electrode probe assembly 21 driven by the first moving unit 311 is opposite to the movement direction of the negative electrode probe assembly 22 driven by the second moving unit 312, the rotation directions of the first lead screw and the second lead screw can be configured to be opposite. When the first lead screw and the second lead screw rotate in opposite directions under the drive of the first driving assembly 33, the first nut and the second nut will naturally generate opposite movements along the extension directions of the first lead screw and the second lead screw, thereby efficiently and synchronously driving the positive electrode probe assembly 21 and the negative electrode probe assembly 22 to perform opposite or reverse movements.

[0069] Please see Figure 2 In some embodiments, the first drive assembly 33 includes a first drive member 331, which is connected to a first lead screw and a second lead screw. The thread direction on the surface of the first lead screw is opposite to that on the surface of the second lead screw. When the first drive member 331 drives the first lead screw and the second lead screw to rotate, the movement directions of the first nut and the second nut are opposite.

[0070] By employing a single first drive element 331 to simultaneously drive the first lead screw and the second lead screw, the structure of the first drive assembly 33 is simplified, reducing manufacturing costs and control system complexity. The power output from the first drive element 331 is synchronously transmitted to the first and second lead screws, ensuring the uniformity of the power source and the initial synchronization of the action.

[0071] It is understandable that, since the thread directions of the first lead screw and the second lead screw are set to be opposite, when the first driving member 331 drives the first lead screw and the second lead screw to rotate synchronously in the same direction, the first nut screwed on the first lead screw and the second nut screwed on the second lead screw will naturally produce linear motion in opposite directions along the axial direction of the first lead screw and the second lead screw due to the difference in the thread direction.

[0072] Thus, this automatic reverse motion mechanism based on the mechanical thread rotation direction ensures that the first nut and the second nut move in opposite directions without the need for complex electronic control programs or additional reversing mechanisms, thereby reliably driving the positive electrode probe assembly 21 and the negative electrode probe assembly 22 to perform precise opposite or reverse movements.

[0073] Please see Figure 8 and Figure 9 , Figure 8 This is the fourth schematic diagram of the structure of the type-changing device 100 provided in the embodiments of this application; Figure 9This is a schematic diagram of the structure of the first adjusting component 31 and the transmission component 4 provided in an embodiment of this application. In some embodiments, there are two first adjusting components 31, which are respectively disposed at opposite ends of the probe mechanism 2 along the second direction. One of the first adjusting components 31 is connected to the first driving component 33. The changing mechanism 3 also includes a transmission component 4, whose two ends are respectively connected to the two first adjusting components 31. The transmission component 4 is configured to follow the movement of the first adjusting component 31 connected to the first driving component 33 and drive the other first adjusting component 31 to move. The second direction intersects the first direction X.

[0074] Two first adjustment components 31 are respectively disposed at opposite ends of the probe mechanism 2 along the second direction. This symmetrical arrangement allows the positive probe component 21 and the negative probe component 22 to obtain balanced driving force and stable support from both ends when moving along the first direction X. One of the first adjustment components 31 is directly connected to the first drive component 33, serving as the active end; the other first adjustment component 31 is linked to the active end's first adjustment component 31 through the transmission component 4. The transmission component 4 is configured to follow the movement of the first adjustment component 31 connected to the first drive component 33 and accurately transmit this movement to the first adjustment component 31 at the other end, thereby driving the other first adjustment component 31 to achieve synchronous movement.

[0075] The transmission assembly 4 ensures that the two ends of the probe mechanism 2 move synchronously, preventing jamming, deformation, or offset caused by asynchronous movement at both ends. The transmission assembly 4 allows a single first drive assembly 33 to drive two first adjustment assemblies 31 to work together, simplifying the number of power sources and reducing the manufacturing cost and control system complexity of the changeover device 100. The two first adjustment assemblies 31 provide support and guidance from both ends of the probe mechanism 2, enhancing the overall rigidity and stability of the probe mechanism 2 during movement and ensuring movement accuracy and post-positioning stability.

[0076] Through the transmission component 4, the two first adjustment components 31 can drive the two ends of the probe mechanism 2 to achieve equal displacement, ensuring that the positive electrode probe component 21 and the negative electrode probe component 22 always move in parallel when adjusting the distance, avoiding unnecessary deflection of the probe mechanism 2 during the movement, thereby ensuring the accuracy and consistency of the alignment of all probes with the battery terminals.

[0077] Please see Figure 1 and Figure 2In some embodiments, the second distance adjustment component 32 includes: a limiting member 321 disposed on the top frame 12; and a mating member 322 disposed on the lifting frame 11. The mating member 322 is disposed corresponding to the limiting member 321. When the top frame 12 and the lifting frame 11 move relative to each other in the vertical direction, the mating member 322 is configured to abut against the limiting member 321 to prevent the top frame 12 and the lifting frame 11 from getting close to each other.

[0078] The abutting engagement of the limiting member 321 and the mating member 322 forms a rigid mechanical stop. This engagement can withstand the impact load generated when the probe mechanism 2 presses down, ensuring the stability and repeatability of the working height setting. The position of the mating member 322 on the lifting frame 11 determines the limit position of the downward movement of the top frame 12. By setting or adjusting the vertical position of the mating member 322, the final working height of the probe mechanism 2 can be controlled, thus adapting to batteries or trays of different heights.

[0079] As the top frame 12 carrying the probe mechanism 2 moves downward, the limiting member 321 moves downward accordingly until it contacts the mating member 322 fixed on the lifting frame 11. At this point, further relative approaching movement is physically blocked, and the top frame 12 stops at a preset position on the downward path. This limiting method based on mechanical contact has a rapid response and no control delay problem, providing a stable height reference for the formation and capacity testing.

[0080] Please see Figure 1 and Figure 2 In some embodiments, the mating part 322 includes a main body 3222 and a lifting part 3221, a limiting surface 3221a is located on the lifting part 3221, the main body 3222 is disposed on the lifting frame 11, and the lifting part 3221 is configured to move vertically relative to the main body 3222 to change the distance between the limiting surface 3221a and the lifting frame 11.

[0081] By controlling the vertical movement of the lifting unit 3221 relative to the main body 3222, the final height position of the limiting surface 3221a can be steplessly adjusted, allowing for precise fine-tuning of the working height of the probe mechanism 2. This enables accurate matching of the thickness of different battery models or the height differences of trays of different specifications, improving the process adaptability and production flexibility of the changeover device 100. The movement of the lifting unit 3221 can be achieved through a precision drive mechanism such as a micro lead screw, servo motor, or manual fine-tuning mechanism, ensuring the accuracy of height setting and repeatability of positioning.

[0082] The limiting surface 3221a is located on the lifting part 3221 and changes position as the lifting part 3221 moves. When the top frame 12 moves downward, the limiting member 321 fixed thereon finally contacts the limiting surface 3221a, at which point the working height of the probe mechanism 2 is determined. By changing the position of the lifting part 3221, this final limiting position can be changed, thereby achieving flexible adjustment of the working height.

[0083] Please see Figure 1 and Figure 2 In some embodiments, the changing mechanism 3 further includes a second driving component 34, which is disposed on the lifting frame 11 and connected to the lifting part 3221. The second driving component 34 is configured to drive the lifting part 3221 to move vertically relative to the main body 3222 to change the distance between the limiting surface 3221a and the lifting frame 11.

[0084] The second drive assembly 34 provides a stable and reliable power source for height adjustment. By precisely controlling the displacement of the lifting part 3221, the height of the limiting surface 3221a can be accurately and steplessly adjusted. This automated adjustment method eliminates the uncertainty caused by manual operation, ensures the accuracy and consistency of each height setting, and provides more stable working conditions for the formation and capacity-building process.

[0085] The precise movement of the lifting unit 3221 under the drive of the second drive assembly 34 enables the limiting surface 3221a to stay at any preset height position, which provides a technical basis for the changing device 100 to adapt to more types of battery specifications.

[0086] Please see Figure 1 and Figure 2 In some embodiments, there are multiple mating parts 322, and the second drive assembly 34 includes: multiple transmission rods 341, which are respectively connected to the lifting parts 3221 of the multiple mating parts 322; and a second drive member 342, which is connected to the multiple transmission rods 341 and is configured to drive the transmission rods 341 to rotate so as to drive the lifting parts 3221 to move in the vertical direction relative to the main body 3222.

[0087] The arrangement of multiple mating parts 322 ensures that the top frame 12 receives balanced support and restraint at multiple points, effectively improving the stress state of the top frame 12 under uneven loads and preventing structural deformation or positional deviation that may occur due to single-point support. The multi-point coordinated restraint enhances the stability and positional accuracy of the probe mechanism 2 in the working state, providing a more reliable height reference for the composition and capacity testing.

[0088] The second drive assembly 34 employs a second drive element 342 to simultaneously drive multiple transmission rods 341, ensuring synchronized movement of the lifting parts 3221 of all mating parts 322 through mechanical synchronization. This synchronized movement mechanism guarantees that the limiting surface 3221a remains on the same horizontal plane, ensuring that the top frame 12 maintains a horizontal posture during height adjustment. This avoids the tilting problem of the probe mechanism 2 caused by inconsistent heights at various points, thereby ensuring consistent contact between all probes and battery terminals.

[0089] Please see Figure 5 and Figure 6 , Figure 5 A schematic diagram showing the connection between the connector 351 and the first movable structure 3112 provided in an embodiment of this application; Figure 6 This is a schematic diagram showing the connection between the connector 351 and the second movable structure 3122 provided in an embodiment of this application. In some embodiments, the changing mechanism 3 further includes a connecting component 35, which includes two connectors 351. One connector 351 is connected to the first movable structure 3112 to move with the first movable structure 3112, and the other connector 351 is connected to the second movable structure 3122 to move with the second movable structure 3122. One connector 351 is connected to the positive electrode probe assembly 21, and the other connector 351 is connected to the negative electrode probe assembly 22.

[0090] As a specialized mechanical connection component, connector 351 can transmit the driving force generated by the first movable structure 3112 and the second movable structure 3122, ensuring that the positive probe assembly 21 and the negative probe assembly 22 can move closely following the movement of the first nut and the second nut, reducing lag or misalignment in the motion transmission process, and improving the rigidity and responsiveness of the entire transmission chain.

[0091] Furthermore, the connecting component 35 makes the connection between the probe mechanism 2 and the first adjustment component 31 a modular interface. When maintenance or replacement of the probe assembly is required, the corresponding connecting component 351 can be disassembled selectively without making major adjustments to the precision lead screw and nut mechanism, simplifying the maintenance operation process, reducing the risk during maintenance, and improving the maintainability of the changeover device 100.

[0092] Please see Figure 7 , Figure 7This is a schematic diagram illustrating the connection between the connector 351 and the movable structure provided in an embodiment of this application. In some embodiments, both the first movable structure 3112 and the second movable structure 3122 have a first mounting hole 313, which penetrates the first movable structure 3112 and the second movable structure 3122 along a first direction X; the connector 351 includes a first connecting portion 3511, which has a second mounting hole 35111, which penetrates the first connecting portion 3511 along the first direction X; the connecting assembly 35 further includes a fixing member configured to pass through the first mounting hole 313 and the second mounting hole 35111, so that the connector 351 is connected to the first movable structure 3112 or the second movable structure 3122.

[0093] As an independent fastening element, the fastener passes through the aligned first mounting hole 313 and second mounting hole 35111 to form a reliable and easy-to-install mechanical interface, thereby resisting the shearing force transmitted in the first direction X, and accurately transmitting the linear motion of the first movable structure 3112 and the second movable structure 3122 to the connector 351, thereby driving the probe assembly to move, ensuring the directness and reliability of power transmission.

[0094] During assembly, the operator can first pre-position the connector 351 with the probe assembly through the second mounting hole 35111 on the first connecting part 3511, and then finally connect and fix the first connecting part 3511 to the movable structure already installed on the fixed structure using the fastener. When it is necessary to maintain or replace a connector 351, it is only necessary to remove the corresponding fastener to separate the connector 351 from the movable structure, reducing the complexity of maintenance work and the potential risks to the core transmission components.

[0095] Please see Figure 4 In some embodiments, the positive electrode probe assembly 21 includes a positive electrode mounting plate and a positive electrode probe, the positive electrode probe being disposed on the positive electrode mounting plate, and the positive electrode mounting plate being configured to be detachably connected to the connector 351; the negative electrode probe assembly 22 includes a negative electrode mounting plate and a negative electrode probe, the negative electrode probe being disposed on the negative electrode mounting plate, and the negative electrode mounting plate being configured to be detachably connected to the connector 351; both the positive electrode mounting plate and the negative electrode mounting plate include connection holes, and the connector 351 further includes a second connection portion 3512, the second connection portion 3512 being connected to the first connection portion 3511, and the second connection portion 3512 being configured to be inserted into the connection hole so that the connector 351 is connected to the positive electrode mounting plate or the negative electrode mounting plate.

[0096] The positive and negative mounting plates serve as independent mounting bases, providing dedicated and stable support platforms for the positive and negative probes. This makes it easier to replace or maintain individual probes. When a probe wears or is damaged due to long-term use, it is not necessary to replace the entire moving unit or large components. Only the corresponding mounting plate and probe module need to be disassembled and replaced, reducing maintenance costs and spare parts inventory pressure.

[0097] The connector 351 is inserted into the connection hole on the mounting plate via a specially designed second connection part 3512, thereby connecting with the positive or negative mounting plate. This plug-in connection method provides initial positioning and guidance during assembly, ensuring that the mounting plate can be quickly and accurately aligned with the connector 351, thus improving assembly efficiency. Optionally, the insertion connection can be a cylindrical pin, a prism, or a keyed connection. It can also be a conical pin or a tapered shaft segment, or a plug with a quick-locking structure. This embodiment does not limit the specific type of insertion connection.

[0098] The detachable connection structure between the positive electrode mounting plate and connector 351, and between the negative electrode mounting plate and connector 351, provides a basis for flexible configuration of the probe assembly. Various specifications of mounting plate modules, each equipped with different probe types, can be pre-assembled according to different testing requirements. In actual production, when a battery model change requires not only adjusting the spacing but also replacing the probe type, the entire mounting plate module and connector 351 can be quickly separated and replaced. This achieves coordinated operation of spacing adjustment and functional component replacement, further improving the equipment's adaptability and changeover efficiency.

[0099] The second aspect of this application discloses a formation and capacity preparation device, which includes: a housing, the housing including an inspection port; and a type-changing device 100 as described in the first aspect, the type-changing device 100 being disposed inside the housing, the type-changing device 100 including a first drive assembly 33 and a second drive assembly 34, both the first drive assembly 33 and the second drive assembly 34 being disposed on the side of the bracket 1 facing the inspection port.

[0100] The access port provides a dedicated channel for the inspection and maintenance of the internal components of the formation and capacity testing equipment. The first drive assembly 33 and the second drive assembly 34 are arranged on the side of the bracket 1 facing the access port, so that these two key drive components can be directly accessed through the access port when they need to be adjusted, repaired or replaced, which shortens the maintenance time and reduces the difficulty and cost of maintaining the formation and capacity testing equipment.

[0101] By centrally arranging the first drive assembly 33 and the second drive assembly 34 in the area facing the maintenance port, a clear functional zoning is formed, ensuring transmission efficiency while leaving reasonable space for the arrangement of other functional modules. This modular layout not only facilitates the initial assembly and commissioning of the modularization and capacity-deployment equipment but also provides convenient conditions for subsequent technical upgrades and modifications.

[0102] Operators can directly observe the working status of the first drive component 33 and the second drive component 34 through the inspection port without entering the equipment or performing complex disassembly and assembly. This allows them to promptly identify potential problems and take corresponding measures, effectively preventing production interruptions caused by component failures and improving the reliability and stability of the formation and capacity testing equipment.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A type-changing device, characterized in that, The conversion device includes: The support includes a base, a lifting frame, and a top frame connected to each other, the lifting frame being configured to move vertically relative to the top frame; A probe mechanism is movably disposed on the top frame. The probe mechanism includes a positive probe assembly and a negative probe assembly, which are arranged at intervals along a first direction. The changing mechanism includes a first adjusting component and a second adjusting component. The first adjusting component is disposed on the top frame and connected to the positive probe component and the negative probe component. The first adjusting component is configured to change the distance between the positive probe component and the negative probe component along the first direction. The second adjusting component is disposed on the lifting frame and configured to adjust the range of movement of the top frame relative to the lifting frame along the vertical direction.

2. The type-changing device according to claim 1, characterized in that, The conversion mechanism also includes: A first driving component is connected to a first adjusting component, and the first driving component is configured to drive the first adjusting component to move along a first direction to change the spacing between the positive electrode probe component and the negative electrode probe component along the first direction.

3. The type-changing device according to claim 2, characterized in that, The first adjustment component includes: A first moving unit is connected to the first driving component. The first moving unit includes a first fixed structure and a first movable structure connected to each other. The first fixed structure is disposed on the top frame. The first movable structure is connected to the positive electrode probe component. The first movable structure is configured to move relative to the first fixed structure along the first direction. The second moving unit is connected to the first driving component. The second moving unit includes a second fixed structure and a second movable structure connected to each other. The second fixed structure is disposed on the top frame. The second movable structure is connected to the negative electrode probe component. The second movable structure is configured to move relative to the second fixed structure along the first direction. The first moving unit drives the positive electrode probe assembly to move in the opposite direction to the second moving unit drives the negative electrode probe assembly to move in the opposite direction.

4. The type-changing device according to claim 3, characterized in that, The first fixing structure includes a first lead screw extending along the first direction, the first lead screw being connected to the first drive assembly, and the first lead screw being configured to rotate about the axis of the first lead screw under the drive of the first drive assembly. The first movable structure includes a first nut, which is screwed onto the first lead screw, and the first nut and the positive electrode probe assembly are fixedly disposed relative to each other. The first nut is configured to move along the extension direction of the first lead screw when the first lead screw is rotated. The second fixing structure includes a second lead screw that extends along the first direction and is connected to the first drive assembly. The second lead screw is configured to rotate about the axis of the second lead screw under the drive of the first drive assembly. The second movable structure includes a second nut, which is screwed onto the second lead screw and fixedly disposed relative to the negative electrode probe assembly. The second nut is configured to move along the extension direction of the second lead screw when the second lead screw is rotated. The first drive assembly includes a first drive member, which is connected to the first lead screw and the second lead screw. The thread direction on the surface of the first lead screw is opposite to that on the surface of the second lead screw. When the first drive member drives the first lead screw and the second lead screw to rotate, the first nut and the second nut move in opposite directions.

5. The type-changing device according to claim 2, characterized in that, The number of the first adjustment components is at least two, and the at least two first adjustment components are respectively disposed at opposite ends of the probe mechanism along the second direction, and one of the first adjustment components is connected to the first drive component; The changing mechanism further includes a transmission component, the two ends of which are respectively connected to two first adjusting components disposed at opposite ends of the probe mechanism along the second direction. The transmission component is configured to follow the movement of the first adjusting component connected to the first driving component and drive the other first adjusting component to move. The second direction intersects with the first direction.

6. The changing device according to any one of claims 1-5, characterized in that, The second pitch adjustment component includes: A limiting member, wherein the limiting member is disposed on the top frame; A mating component is disposed on the lifting frame and is disposed corresponding to the limiting component. When the top frame and the lifting frame move relative to each other in the vertical direction, the mating component is configured to abut against the limiting component to prevent the top frame and the lifting frame from getting close to each other.

7. The type-changing device according to claim 6, characterized in that, The mating component includes a main body and a lifting part. The lifting part includes a limiting surface configured to abut against the limiting component. The main body is disposed on the lifting frame. The lifting part is configured to move vertically relative to the main body to change the distance between the limiting surface and the lifting frame.

8. The type-changing device according to claim 7, characterized in that, The number of mating parts is multiple, and the changing mechanism further includes: A second drive assembly is disposed on the lifting frame and connected to the lifting part. The second drive assembly is configured to drive the lifting part to move vertically relative to the main body to change the distance between the limiting surface and the lifting frame. The second drive assembly includes a second drive member and a plurality of transmission rods. The plurality of transmission rods are respectively connected to the lifting portion of the plurality of mating parts. The second drive member is connected to the plurality of transmission rods and is configured to drive the transmission rods to rotate, thereby causing the lifting portion to move vertically relative to the main body.

9. A chemical composition and capacity testing device, characterized in that, The chemical composition and capacity preparation device includes: A housing, the housing including an access port; The type-changing device as described in any one of claims 1-8.

10. The chemical composition and capacity preparation device according to claim 9, characterized in that, The type-changing device is disposed inside the housing, and the type-changing device includes a first drive assembly and a second drive assembly, both of which are disposed on the side of the bracket facing the inspection port.

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