A conductivity testing device

Abstract

The application discloses a conductivity testing device, comprising: a test bottle for containing electrolyte to be tested, comprising a bottle body provided with an opening and a bottle cap for closing the opening; a temperature control box provided with an openable and closable temperature control cavity for accommodating the test bottle; a clamping mechanism arranged in the temperature control cavity for positioning the test bottle and limiting displacement of the bottle body; and a mechanical arm for clamping and transferring the test bottle between different stations, and also for clamping and moving the bottle cap. By arranging the clamping mechanism to limit displacement of the bottle body, clamping and moving the bottle cap by the mechanical arm, and opening or closing the bottle cap, the electrolyte in the bottle can be prevented from being contaminated, or from being evaporated to cause errors in subsequent test results, so that the accuracy of the test is improved; in addition, the use of manpower is reduced, the operation is more convenient, the test efficiency is higher, and the device can better meet the needs of large-scale production and research and development.

Description

Technical Field

[0001] This application relates to the technical field of battery material testing, and in particular to a conductivity testing device. Background Technology

[0002] The performance of lithium-ion batteries is closely related to the conductivity of the electrolyte, which changes with temperature. Therefore, accurately measuring the electrolyte conductivity at different temperatures is crucial for optimizing battery performance.

[0003] When testing the conductivity of an electrolyte as a function of temperature, the electrolyte solvent exhibits significant volatility, especially during temperature increases. Therefore, the electrolyte test bottle must be kept closed during temperature changes. However, subsequent conductivity measurements require inserting the test probe into the electrolyte, necessitating manual opening and closing of the test bottle, which is cumbersome and inefficient. Conversely, if the test bottle remains open, the evaporation of the electrolyte solvent can lead to substantial errors in the test results. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a conductivity testing device to solve the technical problems of low testing efficiency and easy error in test results in the prior art.

[0005] To achieve at least one of the above objectives, this application provides the following technical solution: An embodiment of this application provides a conductivity testing device, comprising: A test bottle for holding an electrolyte to be tested, comprising a bottle body with an opening and a cap for closing the opening; The temperature control chamber has an openable and closable temperature control cavity, which is used to accommodate the test bottle; A clamping mechanism, disposed within the temperature control cavity, is used to position the test bottle and restrict displacement of the bottle body; A robotic arm is used to grip and transfer the test bottle between different workstations, and the robotic arm is also used to grip and move the bottle cap.

[0006] In some embodiments, the temperature control cavity is filled with a temperature-conducting liquid; The clamping mechanism includes: The mounting block is fixedly connected to the temperature control box, and the mounting block has a placement groove for accommodating the bottle. A positioning block is slidably connected to the mounting block and can be locked relative to the mounting block. The positioning block is used to press against the bottle body to limit the displacement of the bottle body. An adjusting component is disposed on the mounting block, the adjusting component being configured to be driven by the robotic arm to slide the positioning block and lock the positioning block relative to the mounting block; The mounting block is also provided with a sliding channel for accommodating the sliding of the positioning block, and the sliding channel is connected to the placement groove.

[0007] In some embodiments, the adjusting member includes: An adjusting rod is rotatably connected to the mounting block, the positioning block is threadedly connected to the adjusting rod, and the sliding channel restricts the rotation of the positioning block; The drive end is rotatably connected to the mounting block, and the drive end is configured to be held and rotated by the robotic arm. A transmission wheel assembly is connected between the sliding rod and the drive end, transmitting the rotation of the drive end to the rotation of the adjusting rod.

[0008] In some embodiments, the drive wheel assembly includes a turbine and a worm gear; The turbine is connected to the adjusting rod and rotates coaxially with the adjusting rod; The worm gear is connected to the drive end and rotates coaxially with the drive end.

[0009] In some embodiments, the transmission wheel assembly includes two meshing helical gears for transmission; One of the helical gears is fixedly connected to the adjusting rod, and the other helical gear is fixedly connected to the mounting shaft.

[0010] In some embodiments, the rotation axis of the drive end is arranged in the vertical direction.

[0011] In some embodiments, the mounting block is further provided with a mounting groove, and the adjusting member is disposed in the mounting groove; The upper side of the mounting slot is an open slot; A sealing plate is fixedly connected to the mounting block, and the sealing plate is used to seal the opening of the mounting groove; A mounting shaft is fixedly connected to the drive end, and the end of the mounting shaft is rotatably connected to the bottom wall of the mounting groove. The drive end is located on the upper side of the sealing plate, and the mounting shaft penetrates the sealing plate and is rotatably connected to the sealing plate.

[0012] In some embodiments, the mounting block is provided with positioning protrusions for placing the bottle cap; The positioning protrusion is provided with a guide section, and the cross-sectional dimensions of the guide section increase from top to bottom; The cross-section of the guide section is parallel to the horizontal direction.

[0013] In some embodiments, the surface of the positioning block facing the bottle body is configured as a curved surface adapted to the outer wall of the bottle body.

[0014] In some embodiments, a limiting structure is provided between the positioning block and the bottle body; The limiting structure is configured to increase the resistance that needs to be overcome for the bottle to move relative to the positioning block.

[0015] In the above technical solution, by setting up a clamping mechanism to restrict the displacement of the bottle, a robotic arm is used to transfer the test bottle, and the robotic arm clamps and moves the bottle cap to open or close it. In this way, during the testing process, in the preceding steps, such as moving the test bottle and adjusting the electrolyte temperature, the test bottle is always in a closed state, which can avoid the internal electrolyte from being contaminated or the electrolyte from evaporating and causing errors in subsequent test results, thus improving the accuracy of the test. In addition, when it is necessary to insert the corresponding test probe into the electrolyte for conductivity testing, the robotic arm opens the bottle cap. Compared with manual operation by personnel, it reduces manpower and is more convenient to operate, making the testing process more efficient and better able to meet the needs of large-scale production and research and development. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art 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.

[0017] Figure 1 This is a schematic diagram of the overall structure of the testing device provided in some embodiments of this application; Figure 2 This is a schematic diagram of the clamping mechanism provided in some embodiments of this application; Figure 3 A cross-sectional view of a clamping mechanism provided in some embodiments of this application from one angle; Figure 4 This is a cross-sectional view from another angle of the clamping mechanism provided in some embodiments of this application.

[0018] The attached figures are labeled as follows: 1. Test bottle; 11. Bottle body; 12. Bottle cap; 2. Temperature control box; 21. Temperature control chamber; 22. Box door; 3. Clamping mechanism; 31. Mounting block; 311. Placement slot; 312. Sliding channel; 313. Mounting slot; 32. Positioning block; 33. Adjusting component; 331. Adjusting rod; 332. Drive end; 333. Transmission wheel set; 334. Mounting shaft; 34. Enclosed plate; 35. Positioning protrusion; 351. Guide section. 4. Robotic arm. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present application will become clearer and more apparent.

[0020] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and the foregoing description of this application are intended to cover non-exclusive inclusion. The term "embodiment" as used in this application means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0021] The specific term "exemplary" used in this application means "serving as an example, embodiment, or illustration." Any embodiment illustrated as "exemplary" is not necessarily to be construed as superior or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0022] In the description of this application, the technical terms "first", "second", "third", etc. are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0023] In the description of this application, the technical term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0024] In the description of this application, the technical terms "upper", "lower", "inner", "outer", "front", "back", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship in the working state of this application. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] In the description of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] In the description of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this application, "multiple" means two or more (including two), unless otherwise expressly and specifically defined.

[0028] In the description of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, and other dimensions of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0029] As part of the inventive concept of this application, before describing the embodiments of this application, it is necessary to analyze the reasons for the problems of low testing efficiency and easy error in testing results in related technologies, and obtain the technical solutions of the embodiments of this application through reasonable analysis.

[0030] In related technologies, the performance of lithium-ion batteries is closely related to the conductivity of the electrolyte, which changes with temperature. Therefore, accurately measuring the electrolyte conductivity at different temperatures is crucial for optimizing battery performance.

[0031] When testing the conductivity of an electrolyte as a function of temperature, the electrolyte solvent exhibits significant volatility, especially during temperature increases. Therefore, during temperature variations, the electrolyte test bottle must be kept closed to prevent the electrolyte solvent from evaporating, which could alter the electrolyte concentration and lead to errors in the measured conductivity value.

[0032] However, when testing the conductivity of the electrolyte, the test probe needs to be inserted into the electrolyte, which requires opening the test bottle. Currently, this is mostly done manually, with staff manually opening and closing the test bottle cap. This process is complicated and inefficient.

[0033] If the test bottle is always open, although this avoids the need for staff to manually open and close the cap later, the electrolyte solvent will evaporate during the preceding processes, especially during the temperature adjustment and heating process, which will cause a large error in the test results.

[0034] Therefore, this application provides a conductivity testing device to solve the technical problems of low testing efficiency and easy error in test results in the prior art.

[0035] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings. The technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0036] To facilitate the description of the following embodiments, this application uses the testing of the conductivity of the electrolyte used in the battery as an example for illustration. Of course, it can also be used to test the conductivity of other types of liquids in other embodiments.

[0037] This application provides a conductivity testing device in its embodiments. For ease of explanation, the “conductivity testing device” will be referred to as the “testing device” in the embodiments of this application.

[0038] like Figure 1 and Figure 2As shown, the testing device includes a test bottle 1, a temperature control chamber 2, a clamping mechanism 3, and a robotic arm 4. The test bottle 1 is used to hold the electrolyte to be tested. The temperature control chamber 2 serves as the main structure for testing, providing the testing environment and adjusting the temperature of the electrolyte. The clamping mechanism 3 is used to position the test bottle 1, ensuring that the test bottle 1 remains stably in the target position during the test. The robotic arm 4 serves as the power structure of the testing device, used to move the position of the test bottle 1 and operate the test bottle 1 and other components.

[0039] Specifically, the test bottle 1 includes a bottle body 11 with an opening and a bottle cap 12 for closing the opening. The bottle cap 12 is detachably and fixedly connected to the bottle body 11. Exemplarily, the bottle cap 12 is threadedly connected to the bottle body 11; in other embodiments, the bottle cap 12 may be inserted into the bottle body 11. In this embodiment, the threaded connection between the bottle cap 12 and the bottle body 11 is used as an example for explanation. Furthermore, in the accompanying drawings, besides the bottle cap 12 installed on the bottle body 11, another bottle cap 12 is indicated by a light gray line. The bottle cap 12 indicated by the light gray line is merely a schematic diagram showing the state of the bottle cap 12 in different positions.

[0040] The temperature control box 2 is equipped with an openable and closable temperature control cavity 21, which has an open top. The temperature control box 2 also includes a door 22 for closing the upper opening of the temperature control cavity 21. Furthermore, the temperature control box 2 is equipped with a temperature regulation module, which adjusts the temperature of objects placed inside the temperature control cavity 21, including heating or cooling. For example, it may use an electric heating element for heating, a semiconductor cooling structure for cooling, or other conventional heating and cooling components from related fields.

[0041] The clamping mechanism 3 is disposed within the temperature control chamber 21 and is detachably and fixedly connected to the temperature control box 2. During testing, the test bottle 1 is placed into the temperature control chamber 21 and fixed by the clamping mechanism 3 to ensure that the test bottle 1 remains stable during subsequent testing. The clamping mechanism 3 is used to position the test bottle 1 and restrict the displacement of the bottle body 11. Restricting the displacement of the bottle body 11 can be achieved by restricting the rotation of the bottle body 11, restricting the sliding of the bottle body 11, or simultaneously restricting both rotation and sliding of the bottle body 11.

[0042] The robotic arm 4 is fixed relative to the temperature control box 2 and is used to transfer the test bottle 1 or operate other components. For example, the robotic arm 4 can transfer the test bottle 1 or operate the clamping mechanism 3 or certain components on the temperature control box 2. It should be noted that the movement of the robotic arm 4 is controlled by the corresponding control system. The specific control program for manipulating the movement of the robotic arm 4 is something that can be mastered by those skilled in the art based on the prior art. This part will not be described in detail in the embodiments of this application.

[0043] Furthermore, it should be noted that the robotic arm 4 is fixed relative to the temperature control box 2. This can be achieved by either directly fixing the main body of the robotic arm 4 to the temperature control box 2, or by connecting the main body of the robotic arm 4 to the temperature control box 2 on the same mounting base.

[0044] In this embodiment, the robotic arm 4 is also used to grip and move the bottle cap 12, removing the bottle cap 12 from the bottle body 11, or installing the bottle cap 12 onto the bottle body 11 to seal the opening of the bottle body 11. For the threaded connection between the bottle cap 12 and the bottle body 11, the gripping mechanism 3 clamps the bottle body 11 to prevent rotation, and the robotic arm 4 grips the bottle cap 12 and screws it on, thus removing the bottle cap 12 from the bottle body 11 or tightening it onto the bottle body 11.

[0045] Thus, when testing the conductivity of the electrolyte, the electrolyte to be tested is first injected into the test bottle 1 in the preceding process, and the bottle cap 12 is tightened; then, the robotic arm 4 is controlled to move and transfer the test bottle 1 into the temperature control chamber 21, and it is fixed by the clamping mechanism 3 to keep the test bottle 1 in a stable position. The temperature control module 23 of the temperature control chamber 2 is used to adjust the temperature of the electrolyte to be tested to the target temperature.

[0046] Then, the robotic arm 4 is controlled to clamp and screw the bottle cap 12, unscrewing the bottle cap 12 from the bottle body 11. The opening of the bottle body 11 is in an open state. At this time, the corresponding detection probe is inserted into the bottle body 11 to detect the conductivity value of the electrolyte.

[0047] With the above settings, when testing the conductivity of the electrolyte, during the transfer, positioning, and temperature adjustment of the test bottle 1 and the electrolyte inside, the bottle cap 12 remains closed to reduce the adverse effects of heat exchange between the inside and outside of the bottle 11 or the evaporation of the electrolyte inside on temperature regulation, thereby reducing the risk of errors in the test results due to electrolyte evaporation and improving the accuracy of the test results. Afterwards, with the bottle 11 fixed by the clamping mechanism 3, the robotic arm 4 removes the bottle cap 12 from the bottle 11, allowing the detection probe to be inserted into the electrolyte for testing.

[0048] During the above testing process, it can be ensured that the test bottle 1 is in a closed state before the test, which reduces the error caused by electrolyte evaporation or the contamination of the electrolyte by the external environment. When the test is carried out, the bottle cap 12 is opened without the need for manual operation by the staff, which improves the convenience of the test, reduces the manpower required, and can meet the needs of large-scale production and research and development. Moreover, compared with the manual operation by the staff, the operation efficiency is also higher.

[0049] Furthermore, the temperature control chamber 21 is an openable and closable closed cavity. If structures such as cylinders and electric grippers are installed inside, a power source needs to be provided for them, and structures such as air pipes and wires need to be arranged. This requires drilling or slotting in the temperature control box 2 to provide channels for the air pipes and wires. The operation is relatively cumbersome and will damage the sealing performance of the temperature control chamber 21. However, with the above-described configuration in this embodiment, the temperature control box 2 does not need to be modified too much, and it is more convenient to adapt the clamping mechanism 3 to the existing temperature control box 2, thus improving the applicability of the clamping mechanism 3.

[0050] Specifically, a heat-conducting liquid is provided inside the temperature control cavity 21. In different test systems, the type of heat-conducting liquid can be adjusted as needed. For example, in a high-temperature system that requires heating by the temperature control system 5, heat transfer materials that are not easily volatile at high temperatures, such as silicone oil, thermal grease, and glycerin, can be used; in a low-temperature system that requires cooling by the temperature control system 5, heat transfer materials that are stable at low temperatures, such as silicone oil, ethanol, and propanol, can be used. In this embodiment, silicone oil is used as an example for illustration.

[0051] Thus, during the test, the temperature control chamber 21 is filled with silicone oil, meaning that the test bottle 1 and the clamping mechanism 3 are at least partially immersed in the silicone oil. If the clamping mechanism 3 is set as a cylinder, electric claw, or other structure, or if a cylinder, electric claw, or other structure is set in the temperature control chamber 21 to operate the bottle cap 12, the cylinder and electric claw structure will be exposed to the influence of silicone oil (or other types of heat-conducting liquid) for a long time. The liquid will corrode the electrical components, resulting in a serious reduction in their service life.

[0052] Therefore, in this embodiment of the application, the robotic arm 4 is set to operate the bottle cap 12, which can avoid the problem of electrical components being exposed to the liquid environment for a long time, and avoid the problem of corrosion of electrical components leading to a shortened service life of the components.

[0053] It is also noted that when using the robotic arm 4 to operate the bottle cap 12, whether twisting or inserting, the clamping mechanism 3 needs to securely fix the bottle body 11 to ensure that the bottle body 11 remains stable during the operation of the bottle cap 12. However, considering the impact of liquid corrosion on the clamping mechanism 3, it is not convenient to use structures such as cylinders or electric grippers to fix the bottle body 11. To address this issue, in this embodiment, the clamping mechanism 3 is triggered by the robotic arm 4, and the clamping mechanism 3 moves to clamp or release the bottle body 11.

[0054] Specifically, such as Figure 3As shown, the clamping mechanism 3 includes a mounting block 31, a positioning block 32, and an adjusting component 33. The mounting block 31 serves as the main structure of the clamping mechanism 3 and is located inside the temperature control cavity 21. It is detachably and fixedly connected to the temperature control box 2. The mounting block 31 has a placement groove 311, which is used to accommodate the bottle 11. Of course, in some other embodiments, the placement groove 311 can also be set to accommodate a portion of the bottle 11 or the entire test bottle 1.

[0055] The positioning block 32 is mounted on the mounting block 31, slidably connected to the mounting block 31, and can be locked relative to the mounting block 31. The mounting block 31 is provided with a sliding channel 312, which communicates with the aforementioned placement groove 311. The sliding channel 312 accommodates the positioning block 32 to slide within it. Thus, when the test bottle 1 is located in the placement groove 311, the positioning block 32 slides along the sliding channel 312 toward the placement groove 311, abutting against the bottle body 11 and clamping the bottle body 11 with the side wall of the placement groove 311, thereby fixing the bottle body 11.

[0056] The adjusting member 33 is also provided on the mounting block 31. The adjusting member 33 is used to drive the positioning block 32 to slide and can lock the positioning block 32 relative to the mounting block 31. The adjusting member 33 is configured to be driven by the robotic arm 4.

[0057] With the above settings, the specific process of fixing the bottle 11 during the test is as follows: The robotic arm 4 moves the test bottle 1 and places it into the placement slot 311. At this time, the positioning block 32 is in a position to avoid the test bottle 1, so that the test bottle 1 can be smoothly placed into the placement slot 311. After that, the robotic arm 4 releases the test bottle 1 and moves to the position of the adjusting member 33. The robotic arm 4 drives the adjusting member 33 to move, causing the positioning block 32 to slide towards the test bottle 1. The positioning block 32 abuts against the bottle 11 and, together with the side wall of the placement slot 311, clamps the bottle 11, restricting the bottle 11 from rotating.

[0058] Next, the temperature of the electrolyte to be tested is adjusted to the target temperature. The robotic arm 4 moves and screws on the cap 12, unscrewing the cap 12 from the bottle body 11. Then, the corresponding detection probe is inserted into the electrolyte to be tested to detect the conductivity value of the electrolyte.

[0059] Thus, there is no need for a separate power component; the robotic arm 4, as the power component, is less susceptible to corrosion from the heat-conducting liquid filling the temperature control chamber 21. Furthermore, there is no need for other cylinders, electric grippers, or other structures as power components, reducing the need to modify the temperature control chamber 2. Only the robotic arm 4 needs to be controlled to perform its movements. Compared to controlling multiple different components and mechanisms separately, the control logic is clearer, control is more convenient, the risk of component deviations is reduced, and the overall stability of the testing device in executing action commands is higher during use.

[0060] Specifically, such as Figure 3 and Figure 4 As shown, the adjusting component 33 includes an adjusting rod 331, a driving end 332, and a transmission wheel set 333. The adjusting rod 331 is rotatably connected to the mounting block 31, the positioning block 32 is threadedly connected to the adjusting rod 331, and the sliding channel 312 restricts the rotation of the positioning block 32. Thus, when the adjusting rod 331 rotates, it can drive the positioning block 32 to slide.

[0061] In addition, the rotation of the temperature control rod 331 can easily drive the positioning block 32 to slide, but the rotation of the adjustment rod 331 by the sliding of the positioning block 32 requires overcoming great resistance; thus, after the adjustment rod 331 drives the positioning block 32 to position the bottle 11, the adjustment rod 331 stops rotating, which can lock the position of the positioning block 32.

[0062] The drive end 332 is rotatably connected to the mounting block 31 and configured to be held and rotated by the robotic arm 4. The transmission wheel set 333 is connected between the sliding rod 331 and the drive end 332 to realize the transmission between the two, transmitting the rotation of the drive end 332 to the adjusting rod 331. Exemplarily, the transmission wheel set 333 includes two meshing transmission gears, one of which is connected to the adjusting rod 331 and rotates coaxially with the adjusting rod 331, and the other is connected to the drive end 332 and rotates coaxially with the drive end 332.

[0063] For example, the transmission gear is a helical gear. The robotic arm 4 drives the drive end 332 to rotate, and the transmission is carried out between the adjusting rod 331 and the drive end 332 through the transmission wheel set 333, instead of the robotic arm 4 directly driving the adjusting rod 331 to rotate. This makes it easier to adjust the placement angle of the adjusting rod 331 and the drive end 332 as needed. Since the placement position and posture of the adjusting rod 331 are relatively fixed, the placement position and angle of the drive end 332 can be adaptively adjusted by setting the transmission wheel set 333, reducing the problem of the robotic arm 4's movement path being obstructed, and making it more convenient to grasp and drive the drive end 332 to move.

[0064] Furthermore, the specific structural design of the transmission wheel assembly 333 can save effort. For example, the number of teeth on the transmission gear that rotates coaxially with the adjusting rod 331 can be smaller, while the number of teeth on the transmission gear that rotates coaxially with the drive end 332 can be larger. Alternatively, the radius dimensions of the two transmission dimensions can be adjusted. In this way, the transmission of the transmission wheel assembly 333 can save effort, applying a smaller force to the drive end 332 while applying a sufficiently large clamping force to fix the bottle body 11, making it easier to ensure the firmness of the bottle body 11.

[0065] For example, such as Figure 4As shown, the transmission wheel assembly 333 is a worm gear transmission structure, in which the worm wheel rotates coaxially with the adjusting rod 331, and the worm rotates coaxially with the drive end 332. The robotic arm 4 drives the drive end 332 to rotate, which in turn drives the adjusting rod 331 and the positioning block 32 to move, thereby fixing the bottle body 11. At the same time, relying on the self-locking function of the worm gear transmission structure, and combined with the transmission method of the threaded connection between the adjusting rod 331 and the positioning block 32, after driving the positioning block 32 to press against the bottle body 11 for fixing, the stability of the position of the positioning block 32 can be guaranteed, that is, the stability of fixing the bottle body 11.

[0066] like Figure 3 and Figure 4 As shown, the rotation axis of the drive end 332 is set in the vertical direction. Since the upper side of the temperature control chamber 21 is open, the movement of the robotic arm 4 in the vertical direction is less restricted after the door 22 is opened, and it is more convenient to move in the vertical direction. In this way, the robotic arm 4 drives the drive end 332 to rotate, making it easier to grab the bottle cap 12, and the twisting process is not easily hindered by other external structures.

[0067] The mounting block 31 is also provided with a mounting groove 313, and the adjusting component 33 is set in the mounting groove 313; the adjusting rod 331 is rotatably connected to the bottom wall of the mounting groove 313, and the driving end 332 is fixedly connected to the mounting shaft 334, the end of the mounting shaft 334 is rotatably connected to the bottom wall of the mounting groove 313; correspondingly, the transmission wheel set 333 is connected between the adjusting rod 331 and the mounting shaft 334.

[0068] For example, two bearing seats are fixedly connected to the bottom wall of the mounting groove 313. The adjusting rod 331 passes through the two bearing seats, and a rotating bearing is provided between the adjusting rod 331 and the bearing seats to ensure the stability of the rotatable connection between the adjusting rod 331 and the mounting block 31. Correspondingly, the mounting shaft 334 is rotatably connected to the bottom wall of the mounting groove 313, and a bearing and bearing seat mating structure or similar structure can also be provided. In the embodiments of this application, the specific method of setting the rotatable connection can refer to the structure of setting the bearing and bearing seat mating, and the mating structure of each rotatable connection will not be described in detail.

[0069] The upper side of the mounting groove 313 is an open slot. A sealing plate 34 is provided on the mounting block 31. The sealing plate 34 is detachably and fixedly connected to the mounting block 31 to seal the opening of the mounting groove 313. The drive end 332 is located on the upper side of the sealing plate 34. The mounting shaft 334 penetrates the sealing plate 34 and is rotatably connected to the sealing plate 34. In this way, one end of the mounting shaft 334 is rotatably connected to the bottom wall of the mounting groove 313, and the other end penetrates the sealing plate 34 and is rotatably connected to the sealing plate 34. This ensures the stability of the rotatable connection between the mounting shaft 334 and the mounting block 31, which helps to ensure the stability of the transmission of the transmission wheel set 333 and reduces the problem of component wear and damage.

[0070] like Figure 3 As shown, the surface of the positioning block 32 facing the test bottle 1 is set as a curved surface adapted to the outer wall of the test bottle 1. Specifically, the curved surface is adapted to the outer wall of the bottle body 11. This can maximize the contact area between the positioning block 32 and the bottle body 11, making the bottle body 11 more firmly and stably fixed. In addition, it can also reduce the problem of excessive pressure applied by the positioning block 32 to the bottle body 11, which could lead to damage to the bottle body 11.

[0071] In addition, the testing device also includes a limiting structure, which is disposed between the positioning block 32 and the bottle body 11. The limiting structure is configured to increase the resistance that the bottle body 11 and the positioning block 32 need to overcome to generate displacement.

[0072] For example, the limiting structure is a rubber pad, which is fixedly connected to the surface of the positioning block 32 facing the bottle body 11. When the positioning block 32 is pressed against the bottle body 11 to fix the bottle body 11, the rubber pad is in a compressed state, which can increase the friction between the positioning block 32 and the bottle body 11, and make the effect of limiting the rotation of the bottle body 11 more stable.

[0073] In other embodiments, a limiting structure may be provided, including a limiting edge fixed on the positioning block 32 and a limiting groove opened on the outer wall of the bottle body 11. The limiting edge is adapted to the limiting groove and is locked in the limiting groove to restrict the rotation of the bottle body 11 relative to the positioning block 32.

[0074] For example, both the limiting edge and the limiting groove extend vertically to restrict the rotation of the bottle body 11 relative to the positioning block 32. When the bottle cap 12 and the bottle body 11 are inserted or removed, the limiting structure is used to restrict the sliding of the bottle body 11 relative to the positioning block 32, and the limiting edge and the limiting groove can be set to extend horizontally. In some other embodiments, the shape of the limiting edge and the limiting groove can also be adaptively adjusted, as long as it can improve the stability of the bottle body 11 relative to the positioning block 32.

[0075] In addition, such as Figure 2 As shown, the mounting block 31 is provided with a positioning protrusion 35. The positioning protrusion 35 positions the unscrewed bottle cap 12. After the robotic arm 4 unscrews the bottle cap 12, it moves to the position of the positioning protrusion 35 and snaps the bottle cap 12 onto the positioning protrusion 35. The positioning protrusion 35 provides a stable position for placing the bottle cap 12, which facilitates the subsequent performance of other actions by the robotic arm 4.

[0076] The positioning protrusion 35 is provided with a guide section 351, the cross-sectional dimensions of which increase from top to bottom, and the cross-section is parallel to the horizontal direction. When the bottle cap 12 is fastened onto the positioning protrusion 35, it is easier to insert the positioning protrusion 35 into the bottle cap 12, thus facilitating alignment and positioning.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not 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. These 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, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A conductivity testing device, characterized in that, include: A test bottle for holding an electrolyte to be tested, comprising a bottle body with an opening and a cap for closing the opening; The temperature control chamber has an openable and closable temperature control cavity, which is used to accommodate the test bottle; A clamping mechanism, disposed within the temperature control cavity, is used to position the test bottle and restrict displacement of the bottle body; A robotic arm is used to grip and transfer the test bottle between different workstations, and the robotic arm is also used to grip and move the bottle cap.

2. The conductivity testing device according to claim 1, characterized in that, The temperature control cavity is filled with a temperature-conducting liquid; The clamping mechanism includes: The mounting block is fixedly connected to the temperature control box, and the mounting block has a placement groove for accommodating the bottle. A positioning block is slidably connected to the mounting block and can be locked relative to the mounting block. The positioning block is used to press against the bottle body to limit the displacement of the bottle body. An adjusting component is disposed on the mounting block, the adjusting component being configured to be driven by the robotic arm to slide the positioning block and lock the positioning block relative to the mounting block; The mounting block is also provided with a sliding channel for accommodating the sliding of the positioning block, and the sliding channel is connected to the placement groove.

3. The conductivity testing device according to claim 2, characterized in that, The adjusting component includes: An adjusting rod is rotatably connected to the mounting block, the positioning block is threadedly connected to the adjusting rod, and the sliding channel restricts the rotation of the positioning block; The drive end is rotatably connected to the mounting block, and the drive end is configured to be held and rotated by the robotic arm. The transmission wheel assembly is connected between the sliding rod and the drive end, and transmits the rotation of the drive end to the rotation of the adjusting rod.

4. The conductivity testing device according to claim 3, characterized in that, The transmission wheel assembly includes a turbine and a worm gear; The turbine is connected to the adjusting rod and rotates coaxially with the adjusting rod; The worm gear is connected to the drive end and rotates coaxially with the drive end.

5. The conductivity testing device according to claim 3, characterized in that, The transmission gear set includes two meshing helical gears for transmission; One of the helical gears is fixedly connected to the adjusting rod, and the other helical gear is fixedly connected to the mounting shaft.

6. The conductivity testing device according to claim 4 or 5, characterized in that, The rotation axis of the drive end is set in the vertical direction.

7. The conductivity testing device according to claim 3, characterized in that, The mounting block is also provided with a mounting groove, and the adjusting component is disposed in the mounting groove; The upper side of the mounting slot is an open slot; A sealing plate is fixedly connected to the mounting block, and the sealing plate is used to seal the opening of the mounting groove; A mounting shaft is fixedly connected to the drive end, and the end of the mounting shaft is rotatably connected to the bottom wall of the mounting groove. The drive end is located on the upper side of the sealing plate, and the mounting shaft penetrates the sealing plate and is rotatably connected to the sealing plate.

8. The conductivity testing device according to claim 2, characterized in that, The mounting block is provided with positioning protrusions for placing the bottle cap; The positioning protrusion is provided with a guide section, and the cross-sectional dimensions of the guide section increase from top to bottom; The cross-section of the guide section is parallel to the horizontal direction.

9. The conductivity testing device according to claim 2, characterized in that, The surface of the positioning block facing the bottle is set as a curved surface that adapts to the outer wall of the bottle.

10. The conductivity testing device according to claim 9, characterized in that, A limiting structure is provided between the positioning block and the bottle body; The limiting structure is configured to increase the resistance that needs to be overcome for the bottle to move relative to the positioning block.

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