An OCV testing mechanism and an OCV testing device

Abstract

This utility model relates to the field of battery testing technology and discloses an OCV testing mechanism and an OCV testing device. The OCV testing mechanism includes a tab limiting component, which is correspondingly arranged with the battery cell tab to limit and support the battery cell tab; a first test probe component and a second test probe component, which are movably in contact with the battery cell tab to achieve electrical connection with the battery cell tab for OCV testing of the battery cell; and a probe spacing adjustment component, which is respectively connected to the first test probe component and the second test probe component to adjust the horizontal spacing between the first test probe component and the second test probe component. This utility model provides an OCV testing mechanism that can not only automatically meet the OCV testing needs of different battery models or battery cells with high compatibility and versatility, but also effectively reduce the overall production cost of batteries.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, specifically to an OCV testing mechanism and an OCV testing device. Background Technology

[0002] OCV is an abbreviation for Open Circuit Voltage, which refers to the stable potential difference between the positive and negative electrodes of a battery when it is in an open-circuit state, that is, under no load and no charging or discharging current. It is one of the core basic parameters in the battery field and is widely used in the entire life cycle management of battery research and development, production, and use.

[0003] In the existing technology, the test probes used in OCV testing devices to electrically connect with the positive and negative electrodes of the battery for testing are generally designed with a fixed spacing, which can only meet the OCV testing needs of specific battery models. When it is necessary to perform OCV testing on different battery models with large size differences, the testing needs are often met by replacing the test probe mechanism with a different spacing or by directly redesigning the entire testing equipment.

[0004] In summary, researching a technology that can effectively support OCV testing for different battery or cell models is of great significance for improving and refining battery production and research, and reducing battery production costs. Utility Model Content

[0005] To address the shortcomings of the prior art, this invention provides an OCV testing mechanism that combines a tab limiting component, a first test probe component, a second test probe component, and a probe spacing adjustment component to meet the OCV testing requirements of different battery or cell models. Compared to existing testing mechanisms with fixed probe spacing, this not only effectively improves the overall compatibility and versatility of the mechanism but also avoids the need to design specialized testing mechanisms for specific battery or cell models, effectively reducing the overall production cost of the battery.

[0006] This utility model provides an OCV testing device, which combines the above-mentioned OCV testing mechanism with a fixture conveying mechanism, a cell loading mechanism, a vision inspection mechanism, a fixture vacuuming mechanism, and a testing industrial control system. It can automatically meet the OCV testing needs of different models of batteries or cells. The device has high overall compatibility and versatility, thereby effectively reducing the overall production cost of batteries.

[0007] The technical effects to be achieved by this utility model are realized through the following technical aspects: In a first aspect, this utility model provides an OCV testing mechanism, comprising: The electrode limiting component is set to correspond to the electrode of the battery cell, and is used to limit and support the electrode of the battery cell; The first test probe assembly and the second test probe assembly are in active contact with the battery cell tabs to achieve electrical connection with the battery cell tabs in order to perform OCV testing on the battery cell. And a probe spacing adjustment component, which is connected to the first test probe component and the second test probe component respectively, for adjusting the horizontal spacing between the first test probe component and the second test probe component.

[0008] As one preferred embodiment, the probe spacing adjustment component includes: A first probe adjustment unit is connected to the first test probe assembly to drive the first test probe assembly to move in a first horizontal direction; And a second probe adjustment unit, connected to the second test probe assembly, for driving the second test probe assembly to move in the second horizontal direction; Furthermore, the first horizontal direction and the second horizontal direction are located on the same horizontal straight line but in opposite directions.

[0009] As a preferred embodiment, both the first test probe assembly and the second test probe assembly include: The test probe unit is in contact with the battery cell tab to achieve an electrical connection with the battery cell tab; And a probe driving unit, the driving end of which is connected to the test probe unit, to drive the test probe unit to move into contact with the battery cell tab, thereby achieving an electrical connection with the battery cell tab.

[0010] As a preferred embodiment, the first test probe assembly and the second test probe assembly further include: A probe guiding unit is disposed between the test probe unit and the probe driving unit to guide and correct the movement of the test probe unit.

[0011] As one preferred embodiment, the electrode limiting assembly includes: The electrode limiter is set to correspond to the electrode of the battery cell and is used to limit and support the electrode of the battery cell. And a limit drive unit, the drive end of which is connected to the electrode limit seat to drive the electrode limit seat to limit and support the battery cell electrode.

[0012] Secondly, this utility model provides an OCV testing device, comprising: The fixture conveying mechanism is used to convey the battery cell fixtures and position the battery cells to be tested. A cell loading mechanism is arranged adjacent to the fixture conveying mechanism to load the cells to be tested. A visual inspection mechanism is installed on the feeding end of the clamp conveying mechanism to perform positioning and visual inspection of the battery cell to be tested and the battery cell clamp. A clamp vacuuming mechanism is arranged adjacent to the visual inspection mechanism and the clamp conveying mechanism to perform vacuum positioning on the battery cells loaded onto the battery cell clamp. The OCV testing mechanism described above is arranged adjacent to the fixture conveying mechanism for performing OCV testing on the battery cell. And a testing and control system, which is connected to each mechanism of the device to achieve overall control and operation of the device.

[0013] As one preferred embodiment, the number of OCV testing mechanisms is one or more; and when the number of OCV testing mechanisms is multiple, the multiple OCV testing mechanisms are arranged side by side along the conveying direction of the fixture conveying mechanism.

[0014] As one preferred embodiment, the OCV testing device further includes a clamp closing mechanism, which is disposed adjacent to the clamp vacuuming mechanism or the OCV testing mechanism, for closing the cell clamp.

[0015] As one preferred embodiment, the cell feeding mechanism includes: A cell delivery assembly is disposed adjacent to the fixture delivery mechanism to enable the delivery of the cell to be tested to the fixture delivery mechanism; A battery cell loading robot is positioned between the battery cell conveying assembly and the clamp conveying mechanism to load the battery cell to be tested onto the clamp conveying mechanism.

[0016] As one preferred embodiment, the visual inspection mechanism includes: A cell vision inspection component is installed on the feeding end of the clamp conveying mechanism to realize the positioning and vision inspection of the cell to be tested; And a fixture visual inspection component, which is disposed adjacent to the battery cell visual inspection component, to realize the positioning and visual inspection of the battery cell fixture.

[0017] In summary, this utility model has at least the following advantages: 1. The OCV testing mechanism provided by this utility model combines a tab limiting component, a first test probe component, a second test probe component, and a probe spacing adjustment component to meet the OCV testing needs of different battery or cell models. Compared with the existing testing mechanism with a fixed probe spacing, it can not only effectively improve the overall compatibility and versatility of the mechanism, but also avoid the need to design a special testing mechanism for specific battery or cell models, thus effectively reducing the overall production cost of the battery.

[0018] 2. The OCV testing device provided by this utility model is composed of the above-mentioned OCV testing mechanism, fixture conveying mechanism, cell feeding mechanism, vision inspection mechanism, fixture vacuuming mechanism and testing industrial control system. It can automatically meet the OCV testing of different models of batteries or cells. The device has high overall compatibility and versatility, thereby effectively reducing the overall production cost of batteries. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the OCV testing mechanism in an embodiment of the present invention.

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle.

[0021] Figure 3 This is a schematic diagram of the overall structure of the OCV testing device in this embodiment of the present invention; Figure 4 This is a top view of the overall structure of the OCV testing device in this embodiment of the present invention.

[0022] Figure label: 100. OCV testing mechanism; 110. Electrode limiting assembly; 111. Electrode limiting seat; 112. Limiting drive unit; 120. First test probe assembly; 130. Second test probe assembly; 121. Test probe unit; 1211. Probe mounting block; 1212. Elastic probe; 122. Probe driving unit; 123. Probe guiding unit; 140. Probe spacing adjustment assembly; 141. First probe adjustment unit; 142. Second probe adjustment unit; 200. Fixture conveying mechanism; 210. Fixture conveying assembly; 220. Battery cell clamp; 300. Battery cell feeding mechanism; 310. Battery cell conveying assembly; 320. Battery cell feeding robot; 400. Visual inspection mechanism; 410. Cell visual inspection assembly; 420. Fixture visual inspection assembly; 430. NG unloading and conveying assembly; 500. Fixture vacuuming mechanism; 600. Testing industrial control systems; 700. Clamping and closing mechanism. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] Example 1: Please see the appendix Figure 1 The OCV testing mechanism 100 of this utility model includes a tab limiting component 110 corresponding to the lower part of the battery cell tab, a first test probe component 120 and a second test probe component 130 movably abutting the upper part of the battery cell tab, and a probe spacing adjustment component 140 respectively connected to the first test probe component 120 and the second test probe component 130. The tab limiting component 110 is used to limit and support the battery cell tab; the first test probe component 120 and the second test probe component 130 are used to achieve electrical connection with the battery cell tab to realize OCV testing of the battery cell; the probe spacing adjustment component 140 is used to adjust the horizontal spacing between the first test probe component 120 and the second test probe component 130 to meet the OCV testing requirements of different battery cell models.

[0026] Due to differences in cell models and sizes, the spacing between the two tabs of a cell is generally different. If a structure with a fixed test probe spacing is used to connect the cell to the tabs, poor contact and failure to meet testing requirements are common. However, the OCV testing mechanism 100 in this embodiment combines a tab limiting component 110, a first test probe component 120, a second test probe component 130, and a probe spacing adjustment component 140. The spacing between the first test probe component 120 and the second test probe component 130 can be adjusted by the probe spacing adjustment component 140 to meet the OCV testing requirements of different battery or cell models. Compared with the existing testing mechanism with a fixed probe spacing, this not only effectively improves the overall compatibility and versatility of the mechanism but also avoids the need to design a special testing mechanism for specific battery or cell models, effectively reducing the overall production cost of the battery.

[0027] Please refer to the appendix for further details. Figure 2In some embodiments, the probe spacing adjustment assembly 140 includes a first probe adjustment unit 141 connected to the first test probe assembly 120 for driving the first test probe assembly 120 to move in a first horizontal direction; and a second probe adjustment unit 142 connected to the second test probe assembly 130 for driving the second test probe assembly 130 to move in a second horizontal direction; wherein the first horizontal direction and the second horizontal direction are located on the same horizontal straight line but in opposite directions. That is, the spacing between the first test probe assembly 120 and the second test probe assembly 130 can be achieved by the driving action of the first probe adjustment unit 141 and the second probe adjustment unit 142 respectively connected thereto. Preferably, the first probe adjustment unit 141 and the second probe adjustment unit 142 can be selected as a motor-driven adjustment unit or a telescopic cylinder-driven adjustment unit. The specific design can be made according to actual production and needs, as long as it can achieve the spacing and driving of the first test probe assembly 120 and the second test probe assembly 130, and the specific structure is not further limited.

[0028] Please refer to the appendix for further details. Figure 2 In some embodiments, both the first test probe assembly 120 and the second test probe assembly 130 include a test probe unit 121 that movably abuts against the battery cell tab for electrical connection; and a probe drive unit 122 connected to the test probe unit 121 for driving the test probe unit 121 to movably abut against the battery cell tab for electrical connection. Preferably, the probe drive unit 122 is a telescopic cylinder drive unit with a drive direction parallel to the vertical direction. The test probe unit 121 includes a probe mounting block 1211 disposed on the drive end of the probe drive unit 122; and an elastic probe 1212 disposed at the bottom of the probe mounting block 1211 for electrical connection with the battery cell tab. When the probe mounting block 1211, connected to the driving end of the probe driving unit 122, moves towards the battery cell tab under the driving action of the probe driving unit 122, the elastic probe 1212 located at the bottom of the probe mounting block 1211 can also move towards the battery cell tab under its action until it abuts against the battery cell tab, thus realizing the electrical connection between the entire testing mechanism and the battery cell. The design of the elastic probe 1212 can effectively buffer the instantaneous stress applied by the probe to the battery cell tab, so as to prevent the battery cell tab from being damaged due to excessive impact force from the probe.

[0029] Furthermore, in some embodiments, the first test probe assembly 120 and the second test probe assembly 130 further include a probe guide unit 123 disposed between the test probe unit 121 and the probe drive unit 122 for guiding and correcting the movement of the test probe unit 121; preferably, the probe guide unit 123 is a slide rail slider guide unit.

[0030] Please see the appendix Figure 1 and 2 In some embodiments, the tab limiting assembly 110 includes a tab limiting seat 111 correspondingly disposed below the battery cell tab to limit and support the battery cell tab; and a limiting drive unit 112 connected to the tab limiting seat 111 to drive the tab limiting seat 111 to limit and support the battery cell tab. Preferably, the limiting drive unit 112 is a motor drive unit or a telescopic cylinder drive unit. The specific design can be based on actual production and requirements, as long as it can drive the tab limiting seat 111. The specific structure is not further limited.

[0031] Example 2: Please see the appendix Figure 3 and 4 The OCV testing device of this utility model embodiment includes a fixture conveying mechanism 200 for conveying the cell clamp 220 and positioning the cell to be tested; a cell loading mechanism 300 disposed adjacent to the fixture conveying mechanism 200 for loading the cell to be tested; a vision inspection mechanism 400 disposed on the feeding end of the fixture conveying mechanism 200 for positioning and visual inspection of the cell to be tested and the cell clamp 220; a fixture vacuuming mechanism 500 disposed adjacent to the vision inspection mechanism 400 and the fixture conveying mechanism 200 for vacuuming and positioning the cell loaded onto the cell clamp 220; an OCV testing mechanism 100 disposed adjacent to the fixture conveying mechanism 200 as described in Embodiment 1 for performing OCV testing on the cell; and a test industrial control system 600 connected to each mechanism of the device to realize the overall control and operation of the device. Preferably, the test industrial control system 600 is selected from existing industrial control computers or PLC control systems, as long as it can realize the overall control and operation of the device, and the specific structure is not further limited.

[0032] Furthermore, the number of OCV testing mechanisms 100 can be one or more; and when there are multiple OCV testing mechanisms 100, they are arranged side by side along the conveying direction of the fixture conveying mechanism 200. This design of multiple OCV testing mechanisms 100 arranged side by side along the conveying direction of the fixture conveying mechanism 200 not only effectively improves the efficiency of battery testing but also effectively optimizes the overall layout of the device, reducing its overall size and thus saving space in battery production. Additionally, when there are multiple OCV testing mechanisms 100, multiple fixture vacuuming mechanisms 500 are also designed to meet the vacuuming requirements of multiple cell clamps 220; the specific structure is not further limited, as long as it can achieve vacuuming of the cell clamps 220.

[0033] The OCV testing device in this embodiment is formed by combining the OCV testing mechanism 100 of Embodiment 1 with the fixture conveying mechanism 200, the cell feeding mechanism 300, the vision inspection mechanism 400, the fixture vacuuming mechanism 500 and the testing industrial control system 600. It can automatically meet the OCV testing of different models of batteries or cells. The device has high overall compatibility and versatility, thereby effectively reducing the overall production cost of batteries.

[0034] Example 3: Please see the appendix Figure 3 and 4 The OCV testing device of this embodiment is the same as that of Embodiment 2, both including a fixture conveying mechanism 200 for conveying the cell clamp 220 and positioning the cell to be tested; a cell loading mechanism 300 disposed adjacent to the fixture conveying mechanism 200 for loading the cell to be tested; a vision inspection mechanism 400 disposed on the feeding end of the fixture conveying mechanism 200 for positioning and visual inspection of the cell to be tested and the cell clamp 220; a fixture vacuuming mechanism 500 disposed adjacent to the vision inspection mechanism 400 and the fixture conveying mechanism 200 for vacuuming and positioning the cell loaded onto the cell clamp 220; an OCV testing mechanism 100 disposed adjacent to the fixture conveying mechanism 200 as described in Embodiment 1 for performing OCV testing on the cell; and a test industrial control system 600 connected to each mechanism of the device to realize the overall control and operation of the device. The main difference is: The OCV testing device of this embodiment also includes a clamp closing mechanism 700, which is arranged adjacent to the clamp vacuuming mechanism 500 or the OCV testing mechanism 100 for closing the cell clamp 220. The clamp closing mechanism 700 is designed to not only close the clamp before OCV testing to ensure the stability of the clamp's positioning of the cell and improve the quality and stability of the test, but also to close the clamp after OCV testing to prevent the cell from falling off the clamp during transfer, thereby improving the quality and stability of cell transfer after testing. The layout and design can be customized on the clamp conveying mechanism 200 according to actual needs. Furthermore, when there are multiple OCV testing mechanisms 100, multiple clamp closing mechanisms 700 are also designed to accommodate the closing of multiple cell clamps 220; the specific structure is not further limited, as long as it can achieve vacuuming of the cell clamps 220.

[0035] Furthermore, in some embodiments, the fixture conveying mechanism 200 includes a fixture conveying assembly 210 for conveying the battery cell to be tested and the battery cell fixture 220, and a plurality of battery cell fixtures 220 disposed on the fixture conveying assembly 210 for positioning the battery cell. Furthermore, the battery cell loading mechanism 300 includes a battery cell conveying assembly 310 disposed adjacent to the fixture conveying mechanism 200 for conveying the battery cell to be tested to the fixture conveying mechanism 200; and a battery cell loading robot 320 disposed between the battery cell conveying assembly 310 and the fixture conveying mechanism 200 for loading the battery cell to be tested onto the fixture conveying mechanism 200.

[0036] Furthermore, in some embodiments, the vision inspection mechanism 400 includes a cell vision inspection component 410 disposed on the feed end of the fixture conveying mechanism 200 for positioning and visual inspection of the cell to be tested; and a fixture vision inspection component 420 disposed adjacent to the cell vision inspection component 410 for positioning and visual inspection of the cell fixture 220. Preferably, both the cell vision inspection component 410 and the fixture vision inspection component 420 are CCD vision inspection components. Further, the vision inspection mechanism 400 also includes an NG unloading conveying component 430 disposed adjacent to the fixture conveying mechanism 200 for unloading the cell to be tested that fails visual inspection, thereby further improving the yield and efficiency of testing and controlling the overall production quality of the battery.

[0037] The testing process of the OCV testing device in this embodiment of the utility model is as follows: 1. When the cell conveying assembly 310 conveys the cell to be tested to the position adjacent to the fixture conveying mechanism 200, the cell loading robot 320 picks up the cell to be tested. Subsequently, the cell vision inspection assembly 410 performs barcode detection and visual inspection on the cell to be tested, verifying whether the cell barcode and the appearance of the test battery meet the preset standards. If the visual inspection is qualified, the loading robot places the cell on the fixture conveying mechanism 200; if the visual inspection is unqualified, the loading robot places the cell on the NG unloading conveying assembly 430.

[0038] At the same time, the fixture vision inspection component 420 performs positioning inspection on the battery cell fixture 220 on the fixture conveying component 210; when the battery cell loading robot 320 loads the battery cell to be tested that has passed the appearance inspection onto the battery cell fixture 220, the fixture vision inspection component 420 performs visual inspection on the clamping of the battery cell on the battery cell fixture 220 to determine whether the battery cell is clamped in place.

[0039] 2. Subsequently, the battery cell clamp 220, after being clamped, flows to the clamp vacuum mechanism 500 under the action of the clamp conveying assembly 210 to achieve complete positioning of the battery cell; after ensuring that the battery cell is completely positioned, the clamp conveying assembly 210 continues to drive the battery cell clamp 220 to the OCV testing mechanism 100 to perform OCV testing on the battery cell.

[0040] Meanwhile, the clamping and covering mechanism 700 can close the cell clamp 220 before or after the OCV test, as needed, to ensure the overall quality and stability of the cell production.

[0041] During the test, the test industrial control system 600 is connected and communicates with each mechanism to coordinate the operation between the mechanisms and ensure the overall stability of the device.

[0042] As can be seen from the technical solutions of the above embodiments, the present invention provides an OCV testing mechanism 100 and an OCV testing device, which can not only automatically meet the OCV testing of different models of batteries or cells with high compatibility and versatility, but also effectively reduce the overall production cost of batteries.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature 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 first feature includes the first feature 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.

[0047] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. An OCV testing mechanism, characterized in that, include: A tab limiting assembly (110) is provided corresponding to the battery cell tab to limit and support the battery cell tab; The first test probe assembly (120) and the second test probe assembly (130) are in active contact with the battery cell tabs to achieve electrical connection with the battery cell tabs in order to achieve OCV testing of the battery cell. And a probe spacing adjustment component (140), which is connected to the first test probe component (120) and the second test probe component (130) respectively, for adjusting the horizontal spacing between the first test probe component (120) and the second test probe component (130).

2. The OCV testing mechanism according to claim 1, characterized in that, The probe spacing adjustment assembly (140) includes: The first probe adjustment unit (141) is connected to the first test probe assembly (120) and is used to drive the first test probe assembly (120) to move in the first horizontal direction; And a second probe adjustment unit (142), connected to the second test probe assembly (130), for driving the second test probe assembly (130) to move in the second horizontal direction; Furthermore, the first horizontal direction and the second horizontal direction are located on the same horizontal straight line but in opposite directions.

3. The OCV testing mechanism according to claim 1, characterized in that, Both the first test probe assembly (120) and the second test probe assembly (130) include: The test probe unit (121) is in active contact with the battery cell tab to achieve an electrical connection with the battery cell tab; And a probe driving unit (122), the driving end of which is connected to the test probe unit (121) to drive the test probe unit (121) to move into contact with the battery cell tab, thereby achieving an electrical connection with the battery cell tab.

4. The OCV testing mechanism according to claim 3, characterized in that, The first test probe assembly (120) and the second test probe assembly (130) further include: A probe guiding unit (123) is disposed between the test probe unit (121) and the probe driving unit (122) to guide and correct the movement of the test probe unit (121).

5. The OCV testing mechanism according to claim 1, characterized in that, The electrode limiting assembly (110) includes: A tab limiting seat (111) is provided corresponding to the battery cell tab to limit and support the battery cell tab; And a limit drive unit (112), the drive end of which is connected to the tab limit seat (111) to drive the tab limit seat (111) to limit and support the battery cell tab.

6. An OCV testing device, characterized in that, include: The clamp conveying mechanism (200) is used to convey the cell clamp (220) and position the cell to be tested; A cell loading mechanism (300) is arranged adjacent to the fixture conveying mechanism (200) to load the cell to be tested; A visual inspection mechanism (400) is provided on the feeding end of the fixture conveying mechanism (200) to perform positioning and visual inspection of the battery cell to be tested and the battery cell fixture (220); A clamp vacuuming mechanism (500) is arranged adjacent to the vision inspection mechanism (400) and the clamp conveying mechanism (200) for vacuuming and positioning the battery cells loaded onto the battery cell clamp (220); The OCV testing mechanism (100) according to any one of claims 1-5 is arranged adjacent to the fixture conveying mechanism (200) for performing OCV testing on the battery cell; And a test industrial control system (600) is connected to each mechanism of the device to realize the overall control and operation of the device.

7. The OCV testing apparatus according to claim 6, characterized in that, The number of the OCV testing mechanism (100) is one or more; and when the number of the OCV testing mechanism (100) is more than one, the multiple OCV testing mechanisms (100) are arranged side by side along the conveying direction of the fixture conveying mechanism (200).

8. The OCV testing apparatus according to claim 6, characterized in that, It also includes a clamp closing mechanism (700), which is disposed adjacent to the clamp vacuum mechanism (500) or the OCV testing mechanism (100) for closing the cell clamp (220).

9. The OCV testing apparatus according to claim 6, characterized in that, The cell loading mechanism (300) includes: A cell delivery assembly (310) is disposed adjacent to the fixture delivery mechanism (200) to deliver the cell to be tested to the fixture delivery mechanism (200); And a battery cell loading robot (320) is disposed between the battery cell conveying assembly (310) and the fixture conveying mechanism (200) to load the battery cell to be tested onto the fixture conveying mechanism (200).

10. The OCV testing apparatus according to claim 6, characterized in that, The visual inspection mechanism (400) includes: A cell vision inspection component (410) is disposed on the feeding end of the clamp conveying mechanism (200) to realize the positioning and vision inspection of the cell to be tested; And a fixture vision inspection component (420) is disposed adjacent to the battery cell vision inspection component (410) to achieve positioning and vision inspection of the battery cell fixture (220).

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