An OCV testing station for battery health status detection

Abstract

The present application relates to the field of battery testing technology, and specifically discloses an OCV testing station for testing the health status of batteries, including a workbench for testing battery blocks, and further comprising: a vertical support mechanism located outside the workbench; a telescopic drive device including a telescopic end capable of telescopic movement perpendicular to the workbench surface; a synchronous movement mechanism connected to the telescopic end of the telescopic drive device; a shape acquisition mechanism capable of moving toward or away from the lateral direction of the battery block and being clamped to the workbench surface; a top acquisition mechanism connected to the telescopic end of the telescopic drive device via a vertical support mechanism; a temperature stabilization and cleaning component including an air storage tank and an air expansion end, the air expansion end being used to cool the test area of ​​the workbench; and an OCV testing device disposed on the workbench. The present invention achieves multifunctional OCV testing effects including automatic posture sensing of the battery block, temperature stabilization control, and tab cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of battery detection, and in particular to an OCV detection station for detecting the health status of a battery. Background Art

[0002] With the increasing demand for battery performance in new energy vehicles, energy storage power stations, and other fields, pre-shipment health testing of battery products has become increasingly important. Among them, OCV (open circuit voltage) testing, as an important non-invasive, static method for assessing battery health, is widely used on battery production lines. Traditional OCV testing stations are mostly single test platforms, unable to dynamically identify and intelligently adapt to changes in battery size, posture deviation, and tab cleanliness. This is particularly true when testing batteries of multiple specifications and different shapes. This leads to poor adaptability, frequent manual intervention, low testing efficiency, and large testing errors. Furthermore, the tendency for localized heat accumulation and electrical contact contamination during the testing process further affects the stability and accuracy of OCV data. Therefore, a new OCV testing station with a high degree of integration, automatic posture sensing, temperature stabilization, and tab cleaning capabilities is urgently needed to improve the intelligence, reliability, and standardization of testing. Summary of the Invention

[0003] The embodiment of the present application provides an OCV detection station for battery health status detection, the main purpose of which is to achieve a multifunctional OCV detection effect of automatic posture perception, temperature control and tab cleaning processing functions of the battery block.

[0004] To achieve the above objectives, an embodiment of the present application provides an OCV testing station for battery health status detection, including a workbench for testing battery blocks, and also including:

[0005] A vertical support mechanism is located outside the workbench;

[0006] A telescopic drive device, comprising a telescopic end, the telescopic end being capable of telescopic movement perpendicular to the surface of the workbench;

[0007] a synchronous movement mechanism connected to the telescopic end of the telescopic drive device;

[0008] A shape acquisition mechanism, which is movable toward or away from the circumference of the battery block and is clamped on the workbench surface, and the shape acquisition mechanism is transmission-connected to the synchronous movement mechanism;

[0009] A top acquisition mechanism is connected to the telescopic end of the telescopic drive device via the vertical support mechanism; the top acquisition mechanism can move toward or away from the upper end surface of the battery block;

[0010] A temperature stabilization and cleaning component, comprising an air storage tank and an air expansion end, wherein the air expansion end is used to cool the detection area of ​​the workbench;

[0011] An OCV testing device is provided on the workbench, and a testing end thereof is capable of moving to contact a tab of a battery block under test on the workbench;

[0012] The air expansion end is a sealed cavity provided below the workbench, and a pressure detection module is further provided in the sealed cavity. The shape acquisition mechanism can synchronously enter the sealed cavity when moving close to the battery block, and is used to change the pressure value in the sealed cavity to reflect the movement amount of the shape acquisition mechanism.

[0013] The sealed cavity has an exhaust outlet, which is connected to the OCV detection device. The OCV detection device is also provided with an injection port facing the tab, which is connected to the exhaust outlet and is used to clean the tab.

[0014] In a feasible embodiment, the vertical support mechanism includes: an outer support frame fixedly arranged in the vertical direction; a vertical sliding rod capable of being movably clamped on the inner side of the outer support frame in the vertical direction, and the upper end of the vertical sliding rod is connected to the top acquisition mechanism; a horizontal connecting frame is connected to the bottom end of the vertical sliding rod, and the outer end of the horizontal connecting frame is fixedly connected to the telescopic end of the telescopic drive device.

[0015] In a feasible embodiment, the shape acquisition mechanism includes: four clamping seats are parallel to the four side walls of the battery block, the middle part of the clamping seat is clamped in the linear slide groove on the surface of the workbench, and the bottom end of the clamping seat extends to the bottom of the workbench; the temperature stabilizing seat is fixedly arranged below the monitoring area in the workbench and is located on the inner side of all the clamping seats, and the sealed cavity is opened in the temperature stabilizing seat; the piston rod is fixedly arranged on the inner side of the clamping seat in the horizontal direction, and the piston rod can be movably assembled into the sealed cavity of the temperature stabilizing seat; the guide cylinder is fixedly arranged below the temperature stabilizing seat, and part of the sealed cavity is also opened in the inner cavity of the upper end of the guide cylinder, and the lower half of the guide cylinder is also provided with a guide groove, and the upper end of the telescopic end of the telescopic drive device can be slidably clamped in the guide groove.

[0016] In a feasible embodiment, the OCV detection equipment includes: an air cylinder fixedly mounted on the outer support frame; a displacement rod capable of linear movement is arranged above the workbench and is connected to the pneumatic end of the air cylinder; two test contact assemblies are fixedly connected to both sides of the displacement rod and correspond to the positions of the battery tabs in the test area; a force block is fixedly arranged on the side wall of the displacement rod facing the battery block; a reset drive seat is fixedly placed on the workbench, and is used to apply thrust to the force block to reset the two test contact assemblies.

[0017] In a feasible embodiment, the synchronous movement mechanism includes: a synchronous drive frame fixedly mounted on the telescopic end of the telescopic drive device, the length and width ratio of the synchronous drive frame is consistent with the length and width ratio of the rectangular area enclosed by the four clamping seats; one end of each of the four drive rods is rotatably connected to the side wall of the synchronous drive frame, and the other end of each of the drive rods is rotatably connected to the clamping seat.

[0018] In a feasible embodiment, the sealed cavity includes: four piston air passages respectively opened in a straight line in the inner walls of the four side walls of the temperature stabilizing seat, and the piston rod is arranged in the piston air passage so as to be able to move linearly; a converging air passage area is fixedly opened in the inner cavity of the temperature stabilizing seat and connected to the center position of the four piston air passages;

[0019] The temperature stabilizing seat is also provided with: a heat conducting plate fixedly arranged in the inner wall of the workbench and located at the top end of the temperature stabilizing seat; a plurality of heat releasing fins fixedly arranged on the bottom wall of the heat conducting plate above the converging air duct area; a pressure detection module fixedly arranged in the converging air duct area, for obtaining the pressure value of the converging air duct area that changes according to the displacement of the piston rod.

[0020] In a feasible embodiment, the temperature stabilization and cleaning component includes an air tank, and also includes: one end of a high-pressure air supply pipe is connected to the output end of the air tank, and the other end is connected to the converging air channel area to form the air expansion end, which is used to release the high-pressure gas in the air tank to below the heat conduction plate in the low-pressure area; a constant pressure air supply valve is provided on the high-pressure air supply pipe; one end of a clean air supply pipe is connected to the converging air channel area, and the other end is connected to the air cylinder, and an electric control valve is provided on the clean air supply pipe.

[0021] In a feasible embodiment, the test contact assembly includes: two moving rods fixedly arranged on the displacement rod; a docking seat fixedly arranged on the end of the moving rod, and an injection port is arranged in the docking seat; a probe is fixedly arranged in a protruding state on a side wall of the docking seat facing the pole ear; a force switch is fixedly arranged on the bottom end face of the docking seat, and the force switch is a directional pressure switch, and the force switch is used to control the opening and closing of the injection port; a trigger block is fixedly arranged on the workbench surface between the force switch and the pole ear, and the trigger block is used to instantaneously trigger the force switch to open the injection port.

[0022] In a feasible embodiment, the clamping seat includes four seat bodies passing through the workbench, and also includes: two adjusting rods passing through the two ends of the clamping seat, which can move closer to or away from the direction of the battery block; a locking bolt is arranged in the vertical direction at the top of the clamping seat, and can abut and lock the adjusting rod; the movable plate can be rotatably connected to the end of the adjusting rod through the first hinge seat and the second hinge seat arranged on its two ends, wherein the rotation point of the first hinge seat or the second hinge seat is a sliding rotation point; the piezoelectric module is fixedly arranged on the outer wall of the movable plate facing the battery block.

[0023] In a feasible implementation manner, a display bracket and a display are further provided on the vertical support mechanism, and the display is connected to the signal output end of the OCV detection device.

[0024] The present application provides an OCV detection station for battery health status detection. By integrating multiple structural and functional modules such as retractable drive, synchronous linkage clamping, shape acquisition, top measurement, temperature stabilization and pneumatic cleaning, a full-process intelligent detection platform is constructed to achieve precise positioning of battery blocks, dynamic size recognition, environmental temperature control management and clean contact of tabs, thereby effectively improving the accuracy and consistency of OCV detection. This device realizes feedback judgment of battery appearance characteristics through changes in sealed chamber pressure. Combining piezoelectric sensor feedback with mechanical clamping linkage design, it can automatically distinguish whether the battery is too large, too small or deformed; the use of jet-assisted cleaning and flexible probe contact design can significantly reduce misjudgment and damage caused by tab contamination or hard contact; at the same time, it is equipped with a constant pressure air source system and a heat exchange structure to maintain a low-temperature and stable environment in the detection area, further suppressing the influence of thermal interference. The overall structure is compact, responsive, and highly automated. It can adapt to a variety of battery specifications and high-speed production requirements and has good industrial application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of an OCV testing station for battery health status detection provided in an embodiment of the present application is shown;

[0026] Figure 2 A schematic diagram of the top view of an OCV testing station for battery health status detection provided in an embodiment of the present application is shown;

[0027] Figure 3 A schematic side view of the OCV testing station for battery health status detection provided in an embodiment of the present application is shown;

[0028] Figure 4 A schematic diagram showing the position of a temperature stabilizing seat provided in an embodiment of the present application is shown;

[0029] Figure 5 A schematic structural diagram of a vertical sliding rod and a horizontal connecting frame provided in an embodiment of the present application is shown;

[0030] Figure 6 A schematic diagram of a top-down cross-sectional structure of an OCV testing station for battery health status detection provided in an embodiment of the present application is shown;

[0031] Figure 7 A schematic cross-sectional view of a temperature stabilizing seat provided in an embodiment of the present application is shown;

[0032] Figure 8 The following is a schematic diagram showing the structure of an OCV detection device provided in an embodiment of the present application;

[0033] Figure 9 A schematic structural diagram of a movable plate provided in an embodiment of the present application is shown;

[0034] Figure 10 Shown Figure 8 A partial enlarged view of the structure at point A in the figure.

[0035] In the figure: 10, workbench, 20, vertical support mechanism, 30, telescopic drive device, 40, synchronous movement mechanism, 50, shape acquisition mechanism, 60, top acquisition mechanism, 70, temperature stabilization and cleaning component, 80, OCV detection equipment, 90, display, 100, battery block,

[0036] 21. Vertical slide bar, 22. External support frame, 23. Horizontal connecting frame,

[0037] 41. Synchronous drive frame, 42. Drive rod,

[0038] 51. Clamping seat, 52. Temperature stabilizing seat, 53. Piston rod, 54. Guide cylinder,

[0039] 71. Gas storage tank, 72. High-pressure gas supply pipe, 73. Clean gas supply pipe,

[0040] 81. Air cylinder, 82. Displacement rod, 83. Test contact assembly, 84. Reset drive seat, 85. Force block,

[0041] 521. Piston airway, 522. Converging airway area, 523. Heat dissipation fins, 524. Heat conduction plate, 525. Pressure detection module,

[0042] 721, constant pressure air supply valve, 731, electric control valve,

[0043] 541, guide groove,

[0044] 511. seat, 512. adjustment rod, 513. locking bolt, 514. movable plate, 515. piezoelectric module, 516. first hinge seat, 517. second hinge seat,

[0045] 831. Moving rod, 832. Docking seat, 833. Probe, 834. Force switch, 835. Trigger block. DETAILED DESCRIPTION

[0046] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0047] In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also include elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "two or more" includes two or more than two cases.

[0048] See also Figures 1 to 10 As shown, the embodiment of the present application provides an OCV testing station for battery health status detection, including a workbench 10 for testing a battery block 100, and also includes: a vertical support mechanism 20, a telescopic drive device 30, a synchronous movement mechanism 40, a shape acquisition mechanism 50, a top acquisition mechanism 60, a temperature stabilization and cleaning component 70 and an OCV detection device;

[0049] Specifically, the vertical support mechanism 20 is located outside the workbench 10; the telescopic drive device 30 includes a telescopic end, which can telescope perpendicular to the surface of the workbench 10; the synchronous movement mechanism 40 is connected to the telescopic end of the telescopic drive device 30; the shape acquisition mechanism 50 is movable in the lateral direction of the battery block 100 and is connected to the surface of the workbench 10, and the shape acquisition mechanism 50 is transmission-connected to the synchronous movement mechanism 40; the top acquisition mechanism 60 is transmission-connected to the telescopic end of the telescopic drive device 30 via the vertical support mechanism 20; the top acquisition mechanism 60 can move toward or away from the upper end surface of the battery block 100; the temperature stabilization and cleaning component 70 includes an air storage tank 71 and an air expansion end, and the air expansion end is used to cool the detection area of ​​the workbench 10; the OCV detection equipment is set on the workbench 10, and its test end can move to contact the pole ear of the battery block 100 under test on the workbench 10;

[0050] Among them, the air expansion end is a sealed cavity arranged under the workbench 10, and a pressure detection module 525 is also arranged in the sealed cavity. The shape acquisition mechanism 50 can synchronously enter the sealed cavity when moving close to the battery block 100, and is used to change the pressure value in the sealed cavity to reflect the movement amount of the shape acquisition mechanism 50; the sealed cavity has an exhaust outlet, and the exhaust outlet is connected to the OCV detection equipment. The OCV detection equipment is also provided with a nozzle facing the direction of the pole ear, and the nozzle is connected to the exhaust outlet. The nozzle is used to clean the pole ear.

[0051] This embodiment provides an OCV testing station for battery health status testing. The station includes a workbench 10 for supporting a battery block 100. Various functional components are arranged around the workbench 10 to facilitate posture adjustment, shape recognition, tab cleaning, and temperature control of the battery block 100 prior to OCV (open circuit voltage) testing. The station includes a vertical support mechanism 20 located outside the workbench 10. This vertical support mechanism 20 supports a top acquisition mechanism 60 and is driven by a telescopic drive mechanism 30. The telescopic drive mechanism 30 has a telescopic end that can telescope perpendicular to the surface of the workbench 10. This end is connected to a synchronous movement mechanism 40, thereby achieving coordinated positioning of the top acquisition mechanism 60 and the shape acquisition mechanism 50. The shape acquisition mechanism 50 is located on the surface of the workbench 10 and can move toward or away from the battery block 100 along its circumference. It is in transmission connection with the synchronous movement mechanism 40 to automatically grasp and sense the battery block 100's contour. The top acquisition mechanism 60 is used to move towards or away from the upper end surface of the battery block 100, and can sense the height of the battery block 100. It is connected to the telescopic drive device 30 through the vertical support mechanism 20, and can be used to collect relevant geometric parameters of the top and surrounding side of the battery to assist in subsequent detection accuracy.

[0052] In order to further improve the reliability of the detection environment and the accuracy of the data, this embodiment provides a set of temperature stabilization and cleaning components 70, including an air storage tank 71 and an air expansion end connected to it. The air expansion end is specifically a sealed cavity arranged under the workbench 10. The sealed cavity is connected to the sealed cavity at the bottom of the detection area. It can adjust the temperature of the area by flowing high-pressure air and then instantly expanding and absorbing heat. Usually, the temperature of the target area will be reduced by 3°C-10°C, so that the detection environment is always lower than the surrounding environment, avoiding the heat accumulation caused by common battery testing, or after a battery block 100 heats up, the monitoring environment can be quickly restored to the normal temperature range without affecting subsequent battery block detection.

[0053] In addition, a pressure detection module 525 is provided in the sealed chamber. When the shape acquisition mechanism 50 approaches the battery block 100 and partially enters the sealed chamber, the air pressure in the sealed chamber changes. This change is fed back through the pressure detection module 525 and can be used to accurately identify the displacement of the shape acquisition mechanism 50, thereby assisting in determining the topographical characteristics of the battery block 100. After the battery block 100 is clamped, the pressure value is read. If the pressure value is higher than the preset pressure value, it indicates that the current battery volume is smaller than the normal volume; otherwise, the battery volume is larger. The sealed chamber is provided with an exhaust outlet, which is connected to the OCV testing equipment installed on the workbench 10. Slightly compressed gas is used to achieve a flexible contact effect between the test end of the OCV testing equipment and the tab. The testing equipment has a nozzle arranged in the direction of the tab of the battery block 100. The nozzle is connected to the sealed chamber through the exhaust outlet and can also guide part of the airflow in the sealed chamber to the surface of the tab, thereby achieving air jet cleaning of the tab before OCV testing, improving the cleanliness of the test contact end and detection accuracy. The OCV testing equipment is mounted on a workbench 10, with its test terminals movably contacting the tabs of the battery pack 100 to accurately measure the open-circuit voltage. Through the coordinated operation of the aforementioned structures, this embodiment enables intelligent preparatory steps before battery testing, including posture correction, shape verification, cleaning, and temperature control. This provides a stable and reliable foundation for subsequent OCV testing, effectively improving testing efficiency and data accuracy.

[0054] like Figures 3 to 7 As shown, in some examples, further, the vertical support mechanism 20 includes: a vertical slide bar 21, an outer support frame 22 and a horizontal connecting frame 23, the outer support frame 22 is fixed in the vertical direction; the vertical slide bar 21 can be movably connected to the inner side of the outer support frame 22 in the vertical direction, and the upper end of the vertical slide bar 21 is connected to the top acquisition mechanism 60; the horizontal connecting frame 23 is connected to the bottom end of the vertical slide bar 21, and the outer end of the horizontal connecting frame 23 is fixedly connected to the telescopic end of the telescopic drive device 30.

[0055] In this embodiment, in order to achieve stable guide transmission of the top acquisition mechanism 60 in the vertical direction and further optimize the structural configuration of the OCV detection station, a specific vertical support mechanism 20 structural design is provided, which includes a vertical slide bar 21, an outer support frame 22 and a horizontal connecting frame 23, wherein the outer support frame 22 is fixedly arranged on the outside of the workbench 10 in the vertical direction, providing a structural stable foundation for the entire vertical support system; the vertical slide bar 21 can slide up and down along the guide rail structure or limit structure inside the outer support frame 22, and is installed on the inner side of the outer support frame 22 in a movable card connection manner, and the upper end of the vertical slide bar 21 is connected to the top acquisition mechanism 60, so that the top acquisition mechanism 60 It is able to accurately sense and measure the upper surface of the battery block 100 as the vertical slide bar 21 rises and falls. In order to achieve reliable linkage with the telescopic drive device 30, the bottom end of the vertical slide bar 21 is connected to a horizontal connecting frame 23, and the outer end of the horizontal connecting frame 23 is fixedly mounted on the telescopic end of the telescopic drive device 30. With the help of this connection structure, the displacement of the telescopic drive device 30 can be transmitted to the vertical slide bar 21 and the top acquisition mechanism 60, so that the top acquisition mechanism 60 can move accurately towards and away from the upper end surface of the battery block 100, and work synchronously with the shape acquisition mechanism 50 connected to the telescopic drive device 30 by synchronous transmission, thereby further improving the accuracy of collecting geometric information on the top and surrounding sides of the battery.

[0056] like Figure 3 、 Figure 4 、 Figure 6 、 Figure 8 and Figure 9 As shown, in some examples, further, the shape acquisition mechanism 50 includes: four clamping seats 51, a temperature stabilizing seat 52, a piston rod 53 and a guide cylinder 54, the four clamping seats 51 are parallel to the four side walls of the battery block 100, the middle part of the clamping seat 51 is clamped in the linear slide groove on the surface of the workbench 10, and the bottom end of the clamping seat 51 extends to the bottom of the workbench 10; the temperature stabilizing seat 52 is fixedly arranged below the monitoring area in the workbench 10 and is located on the inner side of all the clamping seats 51, and the sealed cavity is opened in the temperature stabilizing seat 52; the piston rod 53 is fixedly arranged on the inner side of the clamping seat 51 in the horizontal direction, and the piston rod 53 can be movably assembled into the sealed cavity of the temperature stabilizing seat 52; the guide cylinder 54 is fixedly arranged below the temperature stabilizing seat 52, and part of the sealed cavity is also opened in the inner cavity of the upper end of the guide cylinder 54, and the lower half of the guide cylinder 54 is also provided with a guide groove 541, and the upper end of the telescopic end of the telescopic drive device 30 can be slidably clamped in the guide groove 541.

[0057] In this embodiment, the structure of the shape acquisition mechanism 50 has been further redesigned to enhance the accuracy of battery block 100 shape recognition and temperature control. The shape acquisition mechanism 50 comprises four clamping seats 51, a temperature stabilization seat 52, a piston rod 53, and a guide cylinder 54. The four clamping seats 51 are arranged parallel to the four sidewalls of the battery block 100, enabling omnidirectional clamping and detection of the battery block 100. The center of each clamping seat 51 is mounted in a linear slot on the surface of the workbench 10 via a removable snap-fit ​​mechanism, enabling horizontal movement toward or away from the battery block 100, thereby achieving adaptive matching of the shape contour and clamping sensing. The bottom end of the clamping seat 51 extends further below the workbench 10 and is interconnected with a sealed chamber. The temperature stabilization seat 52 is fixedly mounted below the monitoring area of ​​the workbench 10 and located inside all clamping seats 51. It houses a sealed chamber structure for temperature stabilization and sealing, maintaining a constant temperature range within the monitoring area and preventing external thermal disturbances from affecting the accuracy of OCV detection. The piston rod 53 is fixedly arranged on the inner side of each clamping seat 51 in the horizontal direction and is movably assembled in the sealed cavity of the temperature stabilizing seat 52. During the movement of the clamping seat 51, the piston rod 53 will be driven to enter or exit the sealed cavity, thereby causing changes in the air pressure in the cavity. In conjunction with the pressure detection module 525, it can accurately reflect the clamping action and the size change of the battery block 100, realize the physical identification of the geometric contour of the battery block 100, and perform position centering and fixed clamping operations on the battery.

[0058] To facilitate airflow guidance, a guide cylinder 54 is fixedly mounted beneath the temperature stabilizing seat 52. The upper inner portion of the guide cylinder 54 forms an extension of the sealed chamber, increasing the space for gas expansion. A guide groove 541 is provided in the lower half of the guide cylinder 54. The upper end of the telescopic end of the telescopic drive device 30 slides and engages within this groove, ensuring stable guidance and reliable drive of the synchronous movement mechanism 40.

[0059] like Figure 3 、 Figure 6 and Figure 8 As shown, in some examples, further, the OCV detection equipment includes: an air cylinder 81, a displacement rod 82, two test contact assemblies 83, a reset drive seat 84 and a force block 85, the air cylinder 81 is fixedly mounted on the outer support frame 22; the displacement rod 82 is arranged above the workbench 10 so as to be able to move linearly, and is connected to the pneumatic end of the air cylinder 81; the two test contact assemblies 83 are fixedly connected to both sides of the displacement rod 82, and correspond to the positions of the battery tabs in the test area; the force block 85 is fixedly arranged on the side wall of the displacement rod 82 facing the battery block 100; the reset drive seat 84 is fixedly placed on the workbench 10, and is used to apply a thrust to the force block 85 to achieve the reset of the two test contact assemblies 83.

[0060] In this embodiment, in order to improve the low damage and automatic control effect of the OCV detection equipment during the contact test of the battery tabs, an OCV detection structure with active contact and automatic reset functions is further provided. The air cylinder 81 is fixedly mounted on the outer support frame 22 to provide a linear pneumatic driving force, and the pneumatic driving force comes from the pressurized gas generated after the sealed cavity is pressurized; the displacement rod 82 is arranged above the workbench 10 in the horizontal direction, and can achieve linear reciprocating movement under the drive of external force. Test contact assemblies 83 are fixedly connected on both sides of the displacement rod 82. The positions of the two sets of contact assemblies correspond to the positions of the two tabs of the battery block 100, and can simultaneously approach the tabs of the battery block 100 during the forward movement of the displacement rod 82, so as to achieve precise alignment and reliable contact. In addition, a force block 85 is fixedly mounted on the side wall of the displacement rod 82 facing the battery block 100. After the test is completed, a push-back force is applied to the force block 85 through the reset drive seat 84, for example, by using an electromagnet and relying on the repulsive force generated by the electromagnet on the force block 85, thereby driving the entire displacement rod 82 to move in the opposite direction, prompting the two test contact assemblies 83 to synchronously retreat to the initial standby position, completing the reset action. The reset drive seat 84 is fixedly mounted on the workbench 10. In addition to using an electromagnet, various drive forms such as an elastic reset mechanism, a cylinder, or an electric drive push rod can also be used, which not only ensures the independent control of the contact action, but also improves the response sensitivity and operational safety of the detection action. It can effectively avoid mechanical fatigue or test offset problems caused by long-term pressure on the contact assembly, while maintaining consistent contact pressure and alignment accuracy in different batches of detection cycles.

[0061] like Figure 3 、 Figure 4 、 Figure 5 and Figure 7 As shown, in some examples, further, the synchronous moving mechanism 40 includes: a synchronous drive frame 41 and four drive rods 42, the synchronous drive frame 41 is fixedly mounted on the telescopic end of the telescopic drive device 30, and the length-to-width ratio of the synchronous drive frame 41 is consistent with the length-to-width ratio of the rectangular area enclosed by the four clamping seats 51; one end of the four drive rods 42 is rotatably connected to the side wall of the synchronous drive frame 41, and the other end of the drive rod 42 is rotatably connected to the clamping seat 51.

[0062] In this embodiment, to achieve synchronized clamping and linked sensing of the four clamping seats 51 in the shape acquisition mechanism 50, a compact, coordinated synchronous movement mechanism 40 is further provided. The synchronous drive frame 41 is fixedly mounted on the telescopic end of the telescopic drive device 30 and can rise and fall as the telescopic end reciprocates in the vertical direction, thereby driving the unified movement of the linkage mechanism. The length-to-width ratio of the synchronous drive frame 41 is designed to match the length-to-width ratio of the rectangular area enclosed by the four clamping seats 51. This ensures that the drive connection structure precisely matches the contour area of ​​the battery pack 100 in terms of spatial arrangement, helping to ensure balanced clamping and resulting in consistent contraction of the clamping seats 51 on each side.

[0063] One end of each drive rod 42 is rotatably mounted on the four corresponding side walls of the synchronous drive frame 41, and the other end is rotatably connected to its respective clamping seat 51, thereby constructing a linked four-sided drive mechanism. When the synchronous drive frame 41 moves downward under the action of the telescopic drive device 30, the four drive rods 42 will synchronously push the four clamping seats 51 inward along the slide direction to approach the battery block 100, achieving a synchronous clamping operation, while pushing the four piston rods 53 to move the compressed gas into the sealed chamber; the reverse movement drives the clamping seat 51 to open synchronously, completing the reset of the clamping mechanism. Through this rigid linkage drive structure design, not only can the synchronization of the clamping action and the consistency of the battery block 100 contour detection be guaranteed, but also an efficient and stable mechanical transmission effect can be achieved without a complex control system, thereby significantly improving the action reliability, rapid positioning clamping, and shape accuracy detection of the pre-processing link in the entire OCV detection station.

[0064] like Figure 6 and Figure 7 As shown, in some examples, further, the sealed chamber includes: four piston air channels 521 and a convergent air channel area 522, the four piston air channels 521 are respectively opened in a straight line in the inner wall of the four side walls of the temperature stabilizing seat 52, and the piston rod 53 can be arranged in a straight line in the piston air channel 521; the convergent air channel area 522 is fixedly opened in the inner cavity of the temperature stabilizing seat 52 and is connected to the center position of the four piston air channels 521.

[0065] In this embodiment, in order to further improve the balance of the air pressure response in the sealed chamber and the sensing sensitivity of the shape acquisition mechanism 50, a specific internal structural configuration of the sealed chamber is provided. The sealed chamber includes four piston airways 521 and a convergent airway area 522, wherein the four piston airways 521 are respectively linearly opened in the inner walls of the four side walls of the temperature stabilization seat 52 and are evenly distributed around the monitoring area where the battery block 100 is located. A piston rod 53 is movably provided inside each piston airway 521. The piston rod 53 is connected to the clamping seat 51 and slides synchronously in the airway as the clamping seat 51 moves. When the clamping seat 51 moves closer to or away from the battery block 100, the advancement or retraction of the piston rod 53 in the piston airway 521 will cause local gas pressure changes. To centrally collect these directional air pressure change signals and improve sensing efficiency, the inner ends of the four piston airways 521 are connected to a converging airway region 522 located in the center of the temperature stabilization seat 52. This region serves as a convergence point for airflow and unified pressure transmission, enabling the entire sealed cavity to generate a unified and effective air pressure response output even under multi-point stress conditions, with high accuracy. The airway arrangement provided in this embodiment enables the sealed cavity to achieve a multi-point linkage, centralized response pneumatic sensing effect, helping to improve the accuracy and dynamic recognition capabilities of the shape acquisition mechanism 50 in detecting the battery block 100's topography.

[0066] like Figure 6 and Figure 7 As shown, in some examples, further, the temperature stabilizing seat 52 is further provided with: a heat conducting plate 524, a plurality of heat releasing fins 523 and a pressure detection module 525, the heat conducting plate 524 is fixedly arranged in the inner wall of the workbench 10 and is located at the top of the temperature stabilizing seat 52; the plurality of heat releasing fins 523 are fixedly arranged on the bottom wall of the heat conducting plate 524 above the converging air duct area 522; the pressure detection module 525 is fixedly arranged in the converging air duct area 522, and is used to obtain the pressure value of the converging air duct area 522 that changes according to the displacement of the piston rod 53.

[0067] In this embodiment, to further enhance the temperature control effect and pressure detection accuracy, a heat conducting plate 524, multiple heat releasing fins 523, and a pressure detection module 525 are added to the internal structure of the temperature stabilizing seat 52 to achieve more efficient heat regulation and air pressure sensing functions. Specifically, the heat conducting plate 524 is fixedly mounted on the inner wall of the workbench 10 and is located at the top of the temperature stabilizing seat 52. The heat conducting plate 524 can quickly absorb the thermal energy fluctuations caused by the battery detection area on the surface of the workbench 10, thereby ensuring that the battery block 100 is in a favorable temperature detection environment during the ongoing open circuit test. On the bottom wall of the heat conducting plate 524, multiple heat releasing fins 523 are evenly distributed. These fins are closely attached to the top of the converging airway area 522, which helps to quickly dissipate local heat. Meanwhile, a pressure detection module 525 is located within the converging airway region 522 to monitor in real time the changes in air pressure caused by the movement of the four piston rods 53 within the piston airway 521. By accurately acquiring the air pressure value within the converging airway region 522, this module indirectly determines the size, position, or deformation of the battery pack 100 and provides data feedback. The matching effect of the heat conducting plate 524 and the heat dissipating fins 523 effectively controls heat accumulation within the detection area, improving temperature uniformity at the detection station during long-term operation. The placement of the pressure detection module 525 enables the system to uniformly convert the movement of the piston rods 53 in multiple directions into a centralized, stable pressure signal, significantly improving the sensitivity and response efficiency of shape recognition.

[0068] like Figure 6 and Figure 7 As shown, in some examples, further, the temperature stabilization and cleaning component 70 includes an air tank 71, and also includes: a high-pressure air supply pipe 72 and a clean air supply pipe 73, one end of the high-pressure air supply pipe 72 is connected to the output end of the air tank 71, and the other end is connected to the converging air duct area 522 to form an air expansion end, which is used to release the high-pressure gas in the air tank 71 to the bottom of the heat conduction plate 524 in the low-pressure area; a constant pressure air supply valve 721 is provided on the high-pressure air supply pipe 72; one end of the clean air supply pipe 73 is connected to the converging air duct area 522, and the other end is connected to the air cylinder 81, and an electric control valve 731 is provided on the clean air supply pipe 73.

[0069] In this embodiment, to further optimize the OCV testing station's performance in temperature control and battery block 100 tab cleaning, a pneumatically assisted mechanism integrating temperature stabilization control and clean air jetting is provided. The temperature stabilization and cleaning assembly 70 includes not only a gas tank 71, but also a high-pressure gas supply pipe 72 and a clean gas supply pipe 73. Specifically, one end of the high-pressure gas supply pipe 72 is connected to the output end of the gas tank 71, and the other end extends and connects to the converging air channel region 522 within the temperature stabilization seat 52, thereby forming an air expansion end within this region. This expansion end, disposed below the heat conducting plate 524, is capable of releasing the high-pressure gas within the gas tank 71 into the low-pressure air cavity, achieving a gas expansion heat absorption effect. The airflow driven by the heat conducting structure rapidly removes heat from the monitoring area, thereby maintaining a constant temperature below the ambient environment and preventing heat accumulation from affecting battery testing stability. A constant pressure air supply valve 721 is provided on the high-pressure air supply pipe 72. The valve can automatically adjust the air supply flow rate according to the real-time pressure state of the converging air channel area 522. When the pressure of the converging air channel area 522 is lower than the set threshold (which occurs after the inspection of the current battery block 100 is completed and all clamping parts and the piston rod 53 are moved outward and reset), the valve automatically opens to replenish air, ensuring that the sealed cavity is always at a constant pressure value before each battery inspection, and then compresses the gas through the piston rod 53 to reflect the displacement of the piston rod 53 according to the air pressure, thereby reflecting the volume size parameters of the current battery.

[0070] On the other hand, the air inlet end of the cleaning air supply pipe 73 is also connected to the converging air channel area 522, and the other end is introduced into the interior of the air cylinder 81. An electrically controlled valve 731 is provided on the cleaning air supply pipe 73, which can electrically control the timing of the air supply (after the battery block 100 is clamped and immediately before the OCV test). After the gas enters the air cylinder 81, on the one hand, it can flexibly push the displacement rod 82 to drive the test probe to move, achieving non-destructive contact with the battery tab; on the other hand, the gas can also be released from the test probe to form a directional airflow, directly purging and cleaning the surface of the battery tab, effectively removing dust, inhibiting the formation of oxide layers (for example, the gas uses an inert gas) or other small particles, and improving contact quality and detection accuracy. To ensure safety and cleaning effects, the gas used in this system is preferably an inert gas such as nitrogen, which not only has excellent cleaning ability but also avoids detection interference caused by conductivity or chemical reactions. In summary, through the combination of high-pressure gas supply and intelligent control, this supplementary embodiment significantly improves the temperature control efficiency and tab cleaning effect of the OCV inspection station, and enhances the consistency of the inspection results of the entire machine.

[0071] like Figure 10As shown, in some examples, further, the test contact assembly 83 includes: two moving rods 831, a docking seat 832, a probe 833, a force switch 834 and a trigger block 835, the two moving rods 831 are fixedly set on the displacement rod 82; the docking seat 832 is fixedly set on the end of the moving rod 831, and an injection port is set in the docking seat 832; the probe 833 is fixedly set in a protruding state on the side wall of the docking seat 832 facing the pole ear; the force switch 834 is fixedly set on the bottom end face of the docking seat 832, the force switch 834 is a directional pressure switch, and the force switch 834 is used to control the opening and closing of the injection port; the trigger block 835 is fixedly set on the surface of the workbench 10 between the force switch 834 and the pole ear, and the trigger block 835 is used to instantaneously trigger the force switch 834 to open the injection port.

[0072] In this embodiment, in order to further improve the contact reliability of the test contact assembly 83 and the real-time response capability of the tab cleaning during the OCV detection process and control the cleaning timing, a test contact assembly 83 structure with a pressure-controlled air jet function is provided. Specifically, two moving rods 831 are fixedly arranged in parallel on the displacement rod 82 and are respectively connected to the two test ends. The end of each moving rod 831 is fixedly connected to a docking seat 832. A jet port for gas cleaning is provided inside the docking seat 832. The jet port is arranged toward the direction of the battery tab. A probe 833 arranged in a protruding state is installed on the side wall surface of the docking seat 832 facing the tab. The probe 833 is used to achieve electrical contact with the battery tab to ensure the stability of OCV detection signal acquisition. In order to achieve automatic cleaning control during the probe contact process, a force switch 834 is provided at the bottom end of the docking seat 832. The switch is a directional pressure switch that can be used when the set pressure is reached. After the contact force is applied, the response triggers and controls the opening and closing state of the injection nozzle. In conjunction with the force switch 834, there is also a trigger block 835 fixedly installed on the surface of the workbench 10 and located between the force switch 834 and the pole ear. When the probe 833 moves to the pole ear contact position with the displacement rod 82 and presses against the trigger block 835, the trigger block 835 will act on the force switch 834 instantaneously, starting the injection nozzle to open instantly, releasing a directional airflow to clean the pole ear surface. The cleaning process occurs just before and after the test contact, which not only ensures the cleanliness of the contact point of the probe 833, but also avoids the airflow interfering with the OCV electrical signal acquisition process. It not only realizes the physical coupling control of electrical contact and cleaning action, but also realizes the automatic coordination of triggering and jetting in a non-electrical drive manner, simplifies the control system, enhances the response speed and on-site adaptability of the detection equipment, and greatly improves the overall intelligence level of the OCV detection station under high-speed detection conditions.

[0073] like Figure 9As shown, in some examples, further, the clamping seat 51 includes four seat bodies 511 that pass through the workbench 10, and also includes: two adjusting rods 512, a locking bolt 513, a movable plate 514 and a piezoelectric module 515, the two adjusting rods 512 can respectively move closer to or away from the battery block 100 and pass through the two ends of the clamping seat 51; the locking bolt 513 is arranged in the vertical direction at the top of the clamping seat 51 and can abut the locking adjusting rod 512; the movable plate 514 is rotatably connected to the end of the adjusting rod 512 through the first hinge 516 and the second hinge 517 arranged on its two ends, wherein the rotation point of the first hinge 516 or the second hinge 517 is a sliding rotation point; the piezoelectric module 515 is fixedly arranged on the outer wall of the movable plate 514 facing the battery block 100.

[0074] In this embodiment, to achieve adjustable clamping control of the battery block 100 to accommodate batteries with irregular structures, each clamping seat 51 is configured to extend through the workbench 10 and be distributed along the circumference of the battery block 100. Two adjustment rods 512 are respectively provided along the ends of the clamping seat 51, capable of moving horizontally toward or away from the battery block 100, thereby achieving precise adjustment and clamping of battery blocks 100 of different sizes or postures. A locking bolt 513 is vertically disposed at the top of the clamping seat 51. The locking bolt 513 can apply downward force and abut the adjustment rod 512, which is used to clamp and lock the battery block 100 after it is adjusted to the target clamping position, preventing the adjustment rod 512 from moving and ensuring a stable and reliable clamping position. The movable plate 514 is rotatably connected to the ends of the two adjustment rods 512 via first hinges 516 and second hinges 517 provided at its two ends, thereby forming a clamping surface structure whose angle can be dynamically adjusted as the position of the adjustment rods 512 changes. At least one of the hinges adopts a sliding rotation point design, which can adapt to different angle changes during the movement of the adjustment rods 512. A piezoelectric module 515 is fixedly mounted on the outer wall of the movable plate 514 on the side facing the battery block 100. When the movable plate 514 undergoes slight deformation or vibration during contact with the battery block 100, the piezoelectric module 515 can collect mechanical response signals in real time to monitor the clamping and locking status with the outer wall of the battery. Therefore, this embodiment provides a mechanical clamping unit with a flexible structure, convenient adjustment, and reliable clamping. It also realizes real-time monitoring and dynamic feedback capabilities during the clamping process through the integration of piezoelectric sensing technology.

[0075] like Figure 1 As shown, in some examples, further, a display 90 bracket and a display 90 are provided on the vertical support mechanism 20 , and the display 90 is connected to the signal output end of the OCV detection device for displaying the OCV open circuit test data of the current battery block 100 .

[0076] The OCV testing station for battery health status detection provided by the present invention combines multiple sets of collaboratively controllable structural components and pneumatic elements to achieve integrated operations such as battery shape recognition, posture adjustment, size detection, tab cleaning, and OCV voltage testing in an automated process. The overall working process is divided into five stages: battery block 100 positioning detection, size acquisition and judgment, cleaning preparation, OCV testing, and test result output. The principle is detailed as follows:

[0077] First, after the battery block 100 is placed onto the workbench 10, the workstation initiates the initial positioning process. Driven by the synchronous movement mechanism 40, the four clamping seats 51 on the workbench 10 begin to approach the battery block 100 along linear guideways. The synchronous drive frame 41, connected to the telescopic end of the telescopic drive device 30, drives the four drive rods 42 in a coordinated manner, causing the clamping seats 51 to evenly and synchronously approach the battery block 100, completing the outer contour. During this movement, the piston rod 53 within each clamping seat 51 simultaneously inserts into the piston airway 521 within the temperature stabilization seat 52, pushing gas into the converging airway region 522, causing a change in the air pressure within the cavity. Simultaneously, the piezoelectric module 515 at the front end of the movable plate 514 presses against the battery block 100. When any clamping seat 51 first contacts the battery block 100, its corresponding piezoelectric module 515 detects a contact pressure signal. This signal is fed back to the control system, triggering the telescopic drive device 30 to cease its current propulsion motion, thus establishing the current initial clamping state.

[0078] At this time, the system reads the air pressure value in the sealed cavity. If the air pressure value is higher than the preset standard, it means that the clamping action is terminated prematurely, reflecting that part of the size of the battery being tested is smaller than the standard; if the air pressure value is lower than the standard value, it means that the clamping is not in place, and it is speculated that the battery block 100 is too large; if all piezoelectric modules 515 generate feedback and the air pressure value is in the standard range, then the battery size is judged to be normal and the clamping action is qualified. In further judgment, if the air pressure value is far below the standard, it means that the overall size of the battery is proportionally reduced and it is a defective product. After the size parameter detection is completed at this stage, the system generates and archives the size detection results based on the clamping data and air pressure feedback, and decides whether to enter the next stage.

[0079] If the battery size is qualified, the system enters the cleaning preparation and OCV testing phase. At this time, the constant pressure gas supply valve 721 controls the release of high-pressure gas from the gas tank 71 to the air expansion end below the heat conducting plate 524. The rapid expansion of the gas removes heat, stabilizing the temperature of the area where the battery block 100 is located, keeping it below the ambient temperature, and preventing the temperature rise caused by the internal resistance of the battery from affecting the test accuracy. Subsequently, the electronically controlled valve 731 opens, directing compressed inert gas (such as nitrogen) to the gas cylinder 81 in the OCV testing equipment, pushing the displacement rod 82 forward. The test contact assemblies 83 at both ends of the displacement rod 82 then approach the battery tabs, and the probe 833 contacts the tabs through flexible spring pressure.

[0080] When contact is about to occur, a trigger block 835 fixed to the surface of the workbench 10 acts on a directional force switch 834 below the probe 833, instantly opening the jet nozzle and spraying a clean air stream onto the tab surface, removing surface impurities and ensuring clean contact between the probe 833 and the tab. Force switch 834 then disconnects, ending the air flow, and the probe 833 continues forward, achieving flexible contact with the tab. The gas pushes the probe 833 into contact while also acting as a buffer, preventing hard impact and protecting the tab structure.

[0081] Finally, the OCV testing equipment measures the tab open-circuit voltage, records the voltage value, and determines whether the battery's health status meets the standards based on pre-set criteria. After the test is complete, the reset drive seat 84 activates, pushing the force-bearing block 85 back through electromagnetic repulsion or an elastic reset mechanism, automatically resetting the displacement rod 82 and the test contact assembly 83 to their initial positions. Simultaneously, the synchronous movement mechanism 40 reverses the direction of movement by opening the four clamping seats 51, releasing the battery block 100. The air pressure within the sealed chamber then decreases, and the inert gas within the gas tank 71, activated by the constant-pressure supply valve 721, automatically replenishes the sealed chamber to a constant pressure, preparing for testing the next battery block 100. This completes the automated testing process. If the test passes, the system generates a pass signal, and the battery proceeds to the next process step. If it fails, it is automatically rejected or an alarm is issued to prevent defective products from entering the subsequent process. This highly integrated structure and function significantly improves testing accuracy, speed, and automation, making it suitable for the high-speed, high-precision testing requirements of battery production lines.

[0082] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. An OCV testing station for battery health status detection, comprising a workbench (10) for testing a battery block (100), characterized in that: Also includes: A vertical support mechanism (20) is located outside the workbench (10); A telescopic drive device (30) includes a telescopic end, wherein the telescopic end is capable of telescopic movement perpendicular to the surface of the workbench (10); a synchronous movement mechanism (40) connected to the telescopic end of the telescopic drive device (30); a shape acquisition mechanism (50) capable of being clamped on the surface of the workbench (10) so as to be movable in a direction close to or away from the circumference of the battery block (100), wherein the shape acquisition mechanism (50) is transmission-connected to the synchronous movement mechanism (40); A top acquisition mechanism (60) is connected to the telescopic end of the telescopic drive device (30) via the vertical support mechanism (20); the top acquisition mechanism (60) is capable of moving toward or away from the upper end surface of the battery block (100); A temperature stabilization and cleaning component (70) includes an air storage tank (71) and an air expansion end, wherein the air expansion end is used to cool the detection area of ​​the workbench (10); An OCV testing device (80) is arranged on the workbench (10), and a testing end thereof is capable of moving to contact a tab of a battery block (100) to be tested on the workbench (10); The air expansion end is a sealed cavity provided below the workbench (10), a pressure detection module (525) is further provided in the sealed cavity, and the shape acquisition mechanism (50) can synchronously enter the sealed cavity when moving close to the battery block (100), and is used to change the pressure value in the sealed cavity to reflect the movement amount of the shape acquisition mechanism (50); The sealed cavity has an exhaust outlet, the exhaust outlet is connected to the OCV detection device (80), and the OCV detection device (80) is further provided with an injection port facing the tab, the injection port is connected to the exhaust outlet, and the injection port is used to clean the tab; The vertical support mechanism (20) comprises: An outer support frame (22) is fixedly arranged in a vertical direction; A vertical slide bar (21) is movably connected to the inner side of the outer support frame (22) in a vertical direction, and the upper end of the vertical slide bar (21) is connected to the top acquisition mechanism (60); A horizontal connecting frame (23) is connected to the bottom end of the vertical sliding rod (21), and an outer end of the horizontal connecting frame (23) is fixedly connected to the telescopic end of the telescopic driving device (30).

2. The OCV testing station for battery health status detection according to claim 1, characterized in that: The shape acquisition mechanism (50) comprises: Four clamping seats (51) are parallel to the four side walls of the battery block (100), the middle of the clamping seat (51) is clamped in a linear slide groove on the surface of the workbench (10), and the bottom end of the clamping seat (51) extends below the workbench (10); A temperature stabilizing seat (52) is fixedly arranged below the monitoring area in the workbench (10) and located inside all the clamping seats (51), and the sealed cavity is opened in the temperature stabilizing seat (52); A piston rod (53) is fixedly arranged on the inner side of the clamping seat (51) in a horizontal direction, and the piston rod (53) can be movably assembled into the sealing cavity of the temperature stabilizing seat (52); The guide cylinder (54) is fixedly arranged below the temperature stabilizing seat (52), and part of the sealing cavity is also opened in the inner cavity of the upper end of the guide cylinder (54). The lower half of the guide cylinder (54) is also provided with a guide groove (541), and the upper end of the telescopic end of the telescopic drive device (30) can be slidably engaged in the guide groove (541).

3. The OCV testing station for battery health status detection according to claim 2, characterized in that: The OCV detection device (80) comprises: An air cylinder (81) is fixedly mounted on the outer support frame (22); A displacement rod (82) is disposed above the workbench (10) and is capable of linear movement, and is connected to the pneumatic end of the air cylinder (81); Two test contact assemblies (83) are fixedly connected to both sides of the displacement rod (82) and correspond to the positions of the battery tabs in the test area; A force-bearing block (85) is fixedly arranged on a side wall of the displacement rod (82) facing the battery block (100); The reset drive seat (84) is fixedly arranged on the workbench (10) and is used to apply a thrust to the force-bearing block (85) to achieve the reset of the two test contact assemblies (83).

4. The OCV testing station for battery health status detection according to claim 3, characterized in that: The synchronous movement mechanism (40) comprises: a synchronous drive frame (41) fixedly sleeved on the telescopic end of the telescopic drive device (30), wherein the length-to-width ratio of the synchronous drive frame (41) is consistent with the length-to-width ratio of the rectangular area enclosed by the four clamping seats (51); Four driving rods (42) have one end each rotatably connected to the side wall of the synchronous driving frame (41), and the other end each of the driving rods (42) is rotatably connected to the clamping seat (51).

5. The OCV testing station for battery health status detection according to claim 4, characterized in that: The sealed cavity comprises: Four piston air passages (521) are respectively opened in a straight line in the inner walls of the four side walls of the temperature stabilizing seat (52), and the piston rod (53) is arranged in the piston air passages (521) so as to be able to move linearly; A converging airway region (522) is fixedly provided in the inner cavity of the temperature stabilizing seat (52) and connected to the center position of the four piston airways (521); The temperature stabilizing seat (52) is further provided with: a heat conducting plate (524) fixedly disposed in the inner wall of the workbench (10) and located at the top end of the temperature stabilizing seat (52); a plurality of heat-dissipating fins (523) fixedly disposed on the bottom wall of the heat-conducting plate (524) above the converging air channel region (522); The pressure detection module (525) is fixedly arranged in the converging airway area (522) and is used to obtain the pressure value of the converging airway area (522) that changes according to the displacement of the piston rod (53).

6. The OCV testing station for battery health status detection according to claim 5, characterized in that: The temperature stabilizing and cleaning assembly (70) includes a gas storage tank (71), and further includes: A high-pressure air supply pipe (72) has one end connected to the output end of the air storage tank (71) and the other end connected to the air converging channel area (522) to form the air expansion end, and is used to release the high-pressure gas in the air storage tank (71) to below the heat conducting plate (524) in the low-pressure area; a constant-pressure air supply valve (721) is provided on the high-pressure air supply pipe (72); A clean air supply pipe (73) has one end connected to the converging air channel area (522) and the other end connected to the air cylinder (81). An electric control valve (731) is provided on the clean air supply pipe (73).

7. The OCV testing station for battery health status detection according to claim 6, characterized in that: The test contact assembly (83) comprises: Two moving rods (831) are fixedly arranged on the displacement rod (82); A docking seat (832) is fixedly arranged on the end of the moving rod (831), and a spray port is arranged in the docking seat (832); A probe (833) is fixedly disposed in a protruding state on a side wall of the docking seat (832) facing the tab; A force switch (834) is fixedly arranged on the bottom end surface of the docking seat (832), and the force switch (834) is a directional pressure switch. The force switch (834) is used to control the opening and closing of the injection port; A trigger block (835) is fixedly arranged on the surface of the workbench (10) between the force switch (834) and the tab, and the trigger block (835) is used to instantaneously trigger the force switch (834) to open the injection port.

8. The OCV testing station for battery health status detection according to claim 3, characterized in that: The clamping seat (51) includes four seat bodies (511) that penetrate the workbench (10), and also includes: Two adjustment rods (512) are respectively movable toward or away from the battery block (100) and pass through both ends of the clamping seat (51); A locking bolt (513) is vertically arranged at the top end of the clamping seat (51) and is capable of abutting and locking the adjusting rod (512); The movable plate (514) is rotatably connected to the end of the adjusting rod (512) through a first hinge seat (516) and a second hinge seat (517) provided on its two ends, wherein the rotation point of the first hinge seat (516) or the second hinge seat (517) is a sliding rotation point; The piezoelectric module (515) is fixedly arranged on the outer wall of the movable plate (514) on the side facing the battery block (100).

9. The OCV testing station for battery health status detection according to claim 1, characterized in that: A display bracket and a display (90) are also provided on the vertical support mechanism (20), and the display (90) is connected to the signal output end of the OCV detection device (80).

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