OCV detection station for battery health state detection

Abstract

The invention relates to the technical field of battery detection, and particularly discloses an OCV detection station for battery health state detection, which comprises a workbench used for detecting a battery block, and further comprises a vertical supporting mechanism located on the outer side of the workbench; the telescopic driving device comprises a telescopic end, and the telescopic end can do telescopic motion in the direction perpendicular to the surface of the workbench; the synchronous moving mechanism is connected to the telescopic end of the telescopic driving device; the shape obtaining mechanism can be movably clamped on the surface of the workbench in a direction close to or away from the peripheral side of the battery block; the top obtaining mechanism is in transmission connection with the telescopic end of the telescopic driving device through the vertical supporting mechanism. The temperature stabilizing and cleaning assembly comprises an air storage tank and an air expansion end, and the air expansion end is used for cooling the detection area of the workbench; and the OCV detection equipment is arranged on the workbench. According to the invention, the multifunctional OCV detection effects of automatic posture sensing, stable temperature control and tab cleaning treatment functions of the battery block are realized.

Description

Technical Field

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

[0002] With the continuous improvement of battery performance requirements in new energy vehicles, energy storage power stations and other fields, it is particularly important to detect the health status of battery products before leaving the factory. Among them, OCV (open circuit voltage) detection is an important means of non-invasive and static evaluation of battery health level, which is widely used in battery production lines. Traditional OCV detection stations are mostly single test platforms, which cannot realize dynamic identification and intelligent adaptation of battery size changes, posture deviations and tab cleaning conditions. Especially when detecting batteries of multiple specifications and different forms, there are problems such as poor adaptability, frequent manual intervention, low detection efficiency and large test errors. In addition, since local heat accumulation and electrical contact contamination are prone to occur during the detection process, the stability and accuracy of OCV data are further affected. Therefore, there is an urgent need for a new OCV detection station with a high degree of integration, automatic posture perception, temperature stabilization control and tab cleaning processing functions to improve the intelligence, reliability and standardization of detection. 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 stabilization control and tab cleaning processing functions of the battery block.

[0004] To achieve the above-mentioned purpose, the embodiment of the present application provides an OCV testing station for battery health status detection, including a workbench for testing a battery block, and also including: A vertical support mechanism is located outside the workbench; A telescopic drive device, comprising a telescopic end, the telescopic end being capable of telescopic movement perpendicular to the surface of the workbench; A synchronous moving mechanism connected to the telescopic end of the telescopic driving device; A shape acquisition mechanism, which is movable towards or away from the circumference of the battery block and is clamped on the surface of the workbench, and the shape acquisition mechanism is transmission-connected to the synchronous movement mechanism; A top acquisition mechanism is connected to the telescopic end of the telescopic drive device through the vertical support mechanism; the top acquisition mechanism can move toward or away from the upper end surface of the battery block; 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; The OCV detection device is arranged on the workbench, and its test end can move to contact the ear of the battery block to be tested on the workbench; Wherein, the air expansion end is a sealed cavity arranged under the workbench, and a pressure detection module is also arranged 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; The sealed cavity has an exhaust outlet, and the exhaust outlet is connected to the OCV detection device. The OCV detection device is also provided with a jet port facing the direction of the ear, and the jet port is communicated with the exhaust outlet. The jet port is used to clean the ear.

[0005] In a feasible implementation manner, the vertical support mechanism includes: an outer support frame is fixedly arranged in the vertical direction; a vertical sliding rod is clamped inside the outer support frame in a vertically movable manner, 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 driving device.

[0006] In a feasible implementation manner, the shape acquisition mechanism includes: four clamping seats are all parallel to the four side walls of the battery block, the middle part of the clamping seat is clamped in the linear sliding groove on the surface of the workbench, and the bottom end of the clamping seat extends below the workbench; a temperature stabilizing seat is fixedly arranged below the monitoring area in the workbench and is located inside all the clamping seats, and the sealed cavity is opened in the temperature stabilizing seat; a piston rod is fixedly arranged horizontally inside the clamping seat, and the piston rod can be movably assembled into the sealed cavity of the temperature stabilizing seat; a guide cylinder is fixedly arranged below the temperature stabilizing seat, and part of the sealed cavity is also opened in the inner cavity at the upper end of the guide cylinder. A guide groove is also arranged in the lower half of the guide cylinder, and the upper end of the telescopic end of the telescopic driving device can be slidably clamped in the guide groove.

[0007] In a feasible implementation manner, the OCV detection device includes: an air cylinder is fixedly installed on the outer support frame; a displacement rod is arranged above the workbench in a linearly movable manner and is connected to the pneumatic end of the air cylinder; two test contact head assemblies are both fixedly connected to both sides of the displacement rod and correspond to the positions of the battery ears in the test area; a force receiving block is fixedly arranged on the side wall of the displacement rod facing the battery block; a reset driving seat is fixedly arranged on the workbench and is used to apply a thrust to the force receiving block to realize the reset of the two test contact head assemblies.

[0008] In a feasible implementation manner, the synchronous movement mechanism includes: a synchronous drive frame fixedly sleeved on the telescopic end of the telescopic drive device, and the length-width ratio of the synchronous drive frame is the same as that of the rectangular area formed by enclosing the four clamping seats; one ends of the four drive rods are respectively rotatably connected to the side walls of the synchronous drive frame, and the other ends of the drive rods are rotatably connected to the clamping seats.

[0009] In a feasible implementation manner, the sealing cavity includes: four piston air channels are respectively opened in a linear state in the inner walls of the four side wall directions of the temperature stabilizing seat, and the piston rod is linearly movably arranged in the piston air channels; a converging air channel area is fixedly opened in the inner cavity of the temperature stabilizing seat and is connected to the central positions of the four piston air channels; The temperature stabilizing seat is further 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 dissipation fins fixedly arranged on the bottom wall of the heat conducting plate above the converging air channel area; a pressure detection module fixedly arranged in the converging air channel area for obtaining the pressure value of the converging air channel area that changes according to the displacement of the piston rod.

[0010] In a feasible implementation manner, the temperature stabilizing and cleaning assembly includes an air storage tank, and further includes: one end of a high-pressure air supply pipe is connected to the output end of the air storage tank, and the other end is connected to the converging air channel area to form the air expansion end for releasing the high-pressure gas in the air storage tank under the heat conducting plate in the low-pressure area; a constant-pressure air supply valve is arranged on the high-pressure air supply pipe; one end of a cleaning 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 arranged on the cleaning air supply pipe.

[0011] In a feasible implementation manner, the test contact assembly includes: two moving rods fixedly arranged on the displacement rod; a docking seat fixedly arranged at the end of the moving rod, and a spray port is arranged in the docking seat; a probe is fixedly arranged in a protruding state on the side wall surface of the docking seat facing the tab; a force receiving switch is fixedly arranged on the bottom end surface of the docking seat, the force receiving switch is a directional pressure switch, and the force receiving switch is used to control the opening and closing of the spray port; a trigger block is fixedly arranged on the surface of the workbench between the force receiving switch and the tab, and the trigger block is used to instantaneously trigger the force receiving switch to open the spray port.

[0012] In a feasible implementation manner, the clamping seat includes four seat bodies penetrating through the workbench, and further includes: two adjusting rods respectively penetrating through both ends of the clamping seat and capable of moving closer to or away from the battery block; a locking bolt vertically arranged at the top of the clamping seat and capable of abutting and locking the adjusting rod; a movable plate rotatably connected to the ends of the adjusting rods respectively through a first hinge seat and a second hinge seat arranged at both ends of the movable plate itself, wherein the rotation points of the first hinge seat or the second hinge seat are sliding rotation points; a piezoelectric module is fixedly arranged on the outer wall of the movable plate facing the battery block side.

[0013] In a feasible implementation manner, a display bracket and a display are further arranged on the vertical support mechanism, and the display is connected to the signal output end of the OCV detection device.

[0014] An OCV detection station for battery health state detection provided by the present application constructs a full-process intelligent detection platform by integrating multiple structural and functional modules such as telescopic drive, synchronous linkage clamping, shape acquisition, top measurement, temperature stabilization processing, and pneumatic cleaning, realizing precise positioning of the battery block, dynamic dimension recognition, environmental temperature control management, and clean contact of the ear tabs, thereby effectively improving the accuracy and consistency of OCV detection. This device realizes the feedback judgment of the battery external shape characteristics through the change of the sealed cavity pressure. Combining the piezoelectric sensing feedback and the mechanical clamping linkage design, it can automatically distinguish whether the battery is too large, too small, or deformed; adopting the jet-assisted cleaning and flexible probe contact design can significantly reduce the misjudgment and damage caused by ear tab pollution or too hard contact; at the same time, it is equipped with a constant-pressure gas source system and a heat exchange structure to maintain a low-temperature and constant-stable environment in the detection area, further suppressing the influence of thermal interference. The overall structure is compact, the response is sensitive, the degree of automation is high, it adapts to various battery specifications and high-speed production requirements, and has good industrial application prospects. Description of the Drawings

[0015] Figure 1 Shows the structural schematic diagram of the OCV detection station for battery health state detection provided by the embodiment of the present application; Figure 2 Shows the top-view structural schematic diagram of the OCV detection station for battery health state detection provided by the embodiment of the present application; Figure 3 Shows the side-view structural schematic diagram of the OCV detection station for battery health state detection provided by the embodiment of the present application; Figure 4 Shows the position schematic diagram of the temperature stabilization seat provided by the embodiment of the present application; Figure 5 Shows the structural schematic diagram of the vertical sliding rod and the horizontal connecting frame provided by the embodiment of the present application; Figure 6Shows a schematic top cross-sectional structure diagram of the OCV detection station for battery health state detection provided by an embodiment of the present application; Figure 7 Shows a schematic cross-sectional structure diagram of the temperature stabilizing seat provided by an embodiment of the present application; Figure 8 Shows a schematic structure diagram of the OCV detection device provided by an embodiment of the present application; Figure 9 Shows a schematic structure diagram of the movable plate provided by an embodiment of the present application; Figure 10 Shows Figure 8 The enlarged partial view of the structure at position A in

[0016] 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 assembly; 80, OCV detection device; 90, display; 100, battery block, 21, vertical slide bar; 22, outer support frame; 23, horizontal connection frame, 41, synchronous drive frame; 42, drive rod, 51, clamping seat; 52, temperature stabilizing seat; 53, piston rod; 54, guide cylinder, 71, gas storage tank; 72, high-pressure gas supply pipe; 73, cleaning gas supply pipe, 81, air cylinder; 82, displacement rod; 83, test contact assembly; 84, reset drive seat; 85, force-bearing block, 521, piston air duct; 522, converging air duct area; 523, heat dissipation fin; 524, heat conduction plate; 525, pressure detection module, 721, constant-pressure gas supply valve; 731, electric control valve, 541, guide groove, 511, seat body; 512, adjusting rod; 513, locking bolt; 514, movable plate; 515, piezoelectric module; 516, first hinge seat; 517, second hinge seat, 831, moving rod; 832, docking seat; 833, probe; 834, force-bearing switch; 835, trigger block. Detailed implementation manners

[0017] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of this specification and 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. Without conflict, the technical features in the embodiments of this specification and the embodiments can be combined with each other.

[0018] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0019] 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 detecting 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; 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 connected to the synchronous movement mechanism 40 by transmission; the top acquisition mechanism 60 is connected to the telescopic end of the telescopic drive device 30 through the vertical support mechanism 20; the top acquisition mechanism 60 can move close to 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 arranged 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; 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 jet port facing the direction of the pole ear, and the jet port is connected to the exhaust outlet, and the jet port is used to clean the pole ear.

[0020] The present embodiment provides an OCV detection station for battery health status detection, including a workbench 10 for supporting a battery block 100, and a variety of functional components are arranged around the workbench 10 to achieve posture adjustment, shape recognition, tab cleaning and temperature control before the OCV (open circuit voltage) detection of the battery block 100. The station includes a vertical support mechanism 20 located outside the workbench 10, the vertical support mechanism 20 is used to carry the top acquisition mechanism 60, and is driven by a telescopic drive device 30, the telescopic drive device 30 has a telescopic end that can be telescopically moved in a direction perpendicular to the surface of the workbench 10, and the telescopic end is connected to a synchronous moving mechanism 40, so as to achieve the linkage positioning of the top acquisition mechanism 60 and the shape acquisition mechanism 50. The shape acquisition mechanism 50 is arranged on the surface of the workbench 10, can move close to or away from the battery block 100 along the circumferential direction of the battery block 100, and is connected to the synchronous moving mechanism 40 in transmission to achieve automatic clamping perception detection of the outer contour of the battery block 100. 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 sides of the battery as a whole to assist in subsequent detection accuracy.

[0021] In order to further improve the reliability of the detection environment and the accuracy of the data, the present embodiment provides a set of temperature stabilization and cleaning components 70, including an air storage tank 71 and an air expansion end connected thereto. The air expansion end is specifically a sealed cavity arranged under the workbench 10, and the sealed cavity is communicated with the sealed cavity at the bottom of the detection area. The high-pressure air flow can be used to adjust the temperature of the area and then expand and absorb heat instantly, which usually reduces the temperature of the target area by 3°C-10°C, so that the detection environment is always lower than the surrounding environment, avoiding the heat accumulation caused by the common battery testing, or the monitoring environment can be quickly restored to the normal temperature range after a certain battery block 100 heats up, without affecting the subsequent battery block detection.

[0022] In addition, a pressure detection module 525 is also provided in the sealed cavity. When the shape acquisition mechanism 50 approaches the battery block 100 and partially enters the sealed cavity, it will cause the air pressure in the sealed cavity to change. The change is fed back through the pressure detection module 525, which can be used to accurately identify the displacement of the shape acquisition mechanism 50, thereby assisting in judging the morphological 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 means that the current battery volume is smaller than the normal volume, otherwise the battery volume is larger. The sealed cavity is provided with an exhaust outlet, which is connected to the OCV detection device set on the workbench 10. The slightly compressed gas is used to achieve a flexible contact effect between the test end of the OCV detection device and the pole ear. The detection device has an injection port set toward the pole ear of the battery block 100. The injection port is connected to the sealed cavity through the exhaust port, and part of the airflow in the sealed cavity can also be guided to the surface of the pole ear, thereby achieving the airflow jet cleaning of the pole ear before the OCV detection, and improving the cleanliness and detection accuracy of the detection contact end. The OCV testing device is installed on the workbench 10, and its test end can be movably contacted with the tab of the battery block 100 to achieve accurate measurement of the open circuit voltage. Through the coordinated work of the above structures, this embodiment can realize the intelligent preparation process before battery testing, including posture correction, shape confirmation, cleaning and temperature control, and provide a stable and reliable basic environment for subsequent OCV testing, thereby effectively improving the detection efficiency and data accuracy.

[0023] 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.

[0024] In this embodiment, in order to realize the stable guiding 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, and the vertical support mechanism 20 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 to provide 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 the limit structure inside the outer support frame 22, and is installed on the inner side of the outer support frame 22 in a movable clamping 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.

[0025] 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 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.

[0026] In this embodiment, the structure of the shape acquisition mechanism 50 is further designed to improve the accuracy of the outer shape recognition of the battery block 100 and the temperature control effect. 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 respectively arranged in parallel corresponding to the four side walls of the battery block 100, and can realize the all-round clamping detection of the circumferential direction of the battery block 100; the middle part of each clamping seat 51 is installed in the linear sliding groove on the surface of the workbench 10 by means of movable clamping, so that it can move horizontally close to or away from the battery block 100, thereby realizing the adaptive matching of the outer contour and the clamping perception. The bottom end of the clamping seat 51 further extends below the workbench 10 and is linked with the sealing cavity. The temperature stabilizing seat 52 is fixedly arranged below the monitoring area in the workbench 10 and is located inside all the clamping seats 51. Its internal is provided with a sealing cavity structure for temperature stabilization and sealing, which can maintain a constant temperature environment range in the monitoring area and avoid the accuracy of the OCV detection caused by external thermal disturbance. The piston rod 53 is fixedly arranged horizontally inside each clamping seat 51 and is movably assembled in the sealing cavity of the temperature stabilizing seat 52. When the clamping seat 51 moves, it will drive the piston rod 53 to enter or exit the sealing cavity, thereby causing a change in the air pressure in the cavity. Cooperating 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 recognition of the geometric contour of the battery block 100, and at the same time perform the operations of battery position centering and fixed clamping.

[0027] To achieve more convenient air flow guiding configuration conditions, a guide cylinder 54 is also fixedly installed below the temperature stabilizing seat 52. The upper inner cavity part of the guide cylinder 54 constitutes an extension part of the sealing cavity to increase the gas expansion space. A guide groove 541 is arranged in the lower half of the guide cylinder 54, and the upper end of the telescopic end of the telescopic driving device 30 is slidably clamped in the guide groove 541 to ensure that the telescopic action realizes the reliable driving of the synchronous moving mechanism 40 under stable guiding.

[0028] As Figure 3 、 Figure 6 and Figure 8 shown, in some examples, further, the OCV detection device includes: an air cylinder 81, a displacement rod 82, two test contact assemblies 83, a reset driving seat 84, and a force receiving block 85. The air cylinder 81 is fixedly installed on the outer support frame 22; the displacement rod 82 is arranged above the workbench 10 and can move linearly, and is connected to the pneumatic end of the air cylinder 81; the two test contact assemblies 83 are both fixedly connected to both sides of the displacement rod 82 and correspond to the positions of the battery pole ears in the test area; the force receiving block 85 is fixedly arranged on the side wall of the displacement rod 82 facing the battery block 100; the reset driving seat 84 is fixedly arranged on the workbench 10 and is used to apply a thrust to the force receiving block 85 to realize the reset of the two test contact assemblies 83.

[0029] In this embodiment, in order to improve the low damage and automatic control effect during the battery tab contact test of the OCV detection device, an OCV detection structure with active contact and automatic reset functions is further provided. Among them, the air cylinder 81 is fixedly installed on the outer support frame 22 to provide a linear pneumatic driving force, and the pneumatic driving force comes from the pressurized gas generated in the sealed cavity; the displacement rod 82 is arranged above the workbench 10 in the horizontal direction and can move linearly back and forth under the drive of an external force. Test contact assemblies 83 are respectively fixedly connected to both sides of the displacement rod 82, and the positions of the two contact assemblies correspond to the positions of the two tabs of the battery block 100, and can approach the tabs of the battery block 100 synchronously during the forward movement of the displacement rod 82, realizing precise alignment and reliable contact. In addition, a force-receiving block 85 is fixedly installed on the side wall of the displacement rod 82 facing the battery block 100. After the detection is completed, a return thrust is applied to the force-receiving block 85 through the reset driving seat 84. For example, an electromagnet is used and the repulsive force generated by the electromagnet on the force-receiving block 85 is relied on, so as to drive the entire displacement rod 82 to move in the reverse direction, prompting the two test contact assemblies 83 to synchronously retract to the initial standby position and complete the reset action. The reset driving seat 84 is fixedly arranged on the workbench 10. In addition to using an electromagnet, various driving 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 operation safety of the detection action. It can effectively avoid problems such as mechanical fatigue or test deviation caused by the contact assembly pressing for a long time, and at the same time maintain consistent contact pressure and alignment accuracy in different batches of detection cycles.

[0030] As Figure 3 、 Figure 4 、 Figure 5 and Figure 7 shown, in some examples, further, the synchronous movement mechanism 40 includes: a synchronous drive frame 41 and four drive rods 42. The synchronous drive frame 41 is fixedly sleeved on the telescopic end of the telescopic drive device 30, and the length-width ratio of the synchronous drive frame 41 is the same as the length-width ratio of the rectangular area formed by enclosing the four clamping seats 51; one end of each 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.

[0031] In this embodiment, to achieve the synchronous clamping and linkage sensing operations of the four clamping seats 51 in the shape acquisition mechanism 50, a synchronous movement mechanism 40 with a compact structure and coordinated actions is further provided. The synchronous drive frame 41 is fixedly sleeved on the telescopic end of the telescopic drive device 30 and can be lifted integrally as the telescopic end reciprocates in the vertical direction, thereby driving the unified actions of the linkage mechanism. The aspect ratio design of the synchronous drive frame 41 is the same as that of the rectangular area enclosed by the four clamping seats 51, enabling the drive connection structure to precisely match the contour area of the battery block 100 in spatial layout, which helps ensure the balance of the clamping actions and makes the contraction amount of each side clamping seat 51 consistent.

[0032] One end of each drive rod 42 is rotatably connected to the four corresponding side walls of the synchronous drive frame 41, and the other end is respectively rotatably connected to its own clamping seat 51, thereby constructing a linkage four-side 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 simultaneously push the four clamping seats 51 to approach the battery block 100 along the chute direction, realizing the synchronous clamping operation, and at the same time pushing the four piston rods 53 to move into the sealed cavity to compress the gas; the reverse movement drives the clamping seats 51 to open synchronously, completing the reset of the clamping mechanism. Through this rigid linkage drive structure design, not only can the synchronism of the clamping actions and the consistency of the battery block 100 contour detection be ensured, but also the efficient and stable mechanical transmission effect can be achieved on the premise of avoiding a complex control system, thereby significantly improving the action reliability, rapid positioning and clamping, and shape accuracy detection of the pre-treatment link in the entire OCV detection station.

[0033] As Figure 6 and Figure 7 shown, in some examples, furthermore, the sealed cavity includes: four piston air channels 521 and a converging air channel area 522. The four piston air channels 521 are respectively opened in a straight line in the inner walls of the four side wall directions of the temperature stabilizing seat 52, and the piston rods 53 can be linearly arranged in the piston air channels 521; the converging air channel area 522 is fixedly opened in the inner cavity of the temperature stabilizing seat 52 and is connected to the central position of the four piston air channels 521.

[0034] In this embodiment, to further improve the balance of the air pressure response in the sealed cavity and the sensing sensitivity of the shape acquisition mechanism 50, a specific internal structure configuration of the sealed cavity is provided. The sealed cavity includes four piston air passages 521 and a converging air passage area 522. Among them, the four piston air passages 521 are respectively linearly formed in the inner walls of the four side wall directions of the temperature stabilizing base 52 and are evenly distributed around the monitoring area where the battery block 100 is located. A piston rod 53 is movably arranged inside each piston air passage 521. The piston rod 53 is connected to the clamping seat 51 and slides synchronously in the air passage as the clamping seat 51 moves. When the clamping seat 51 approaches or moves away from the battery block 100, the advancement or retraction of the piston rod 53 in the piston air passage 521 will cause local gas pressure changes. In order to centrally collect these directional air pressure change signals and improve the sensing efficiency, the inner ends of the four piston air passages 521 are all communicated with the converging air passage area 522 arranged in the center of the inner cavity of the temperature stabilizing base 52. This area plays the role of the intersection of the air flow channels and the unified transmission of pressure, enabling the entire sealed cavity to still form a unified and effective air pressure response output under the multi-point force-bearing state, and the output result has a high accuracy. Through the air passage arrangement form provided in this embodiment, the sealed cavity realizes the pneumatic sensing effect of multi-point linkage and centralized response, which helps to improve the accuracy and dynamic recognition ability of the shape acquisition mechanism 50 for detecting the morphology of the battery block 100.

[0035] As Figure 6 and Figure 7 shown, in some examples, further, a heat conducting plate 524, a plurality of heat dissipation fins 523 and a pressure detection module 525 are also arranged in the temperature stabilizing base 52. 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 base 52; a plurality of heat dissipation fins 523 are fixedly arranged on the bottom wall of the heat conducting plate 524 above the converging air passage area 522; the pressure detection module 525 is fixedly arranged in the converging air passage area 522 and is used to obtain the pressure value of the converging air passage area 522 that changes according to the displacement of the piston rod 53.

[0036] In this embodiment, to further improve the temperature control effect and pressure detection accuracy, a heat conduction plate 524, a plurality of heat dissipation fins 523, and a pressure detection module 525 are added to the internal structure of the temperature stabilizing base 52 to achieve more efficient heat regulation and air pressure sensing functions. Specifically, the heat conduction plate 524 is fixedly arranged in the inner wall of the workbench 10 and is located at the top of the temperature stabilizing base 52. The heat conduction plate 524 can quickly absorb the heat energy fluctuations brought by the battery detection area on the surface of the workbench 10, so as to ensure that the detection environment is in a favorable temperature during the continuous open-circuit test of the battery block 100. On the bottom wall of the heat conduction plate 524, a plurality of heat dissipation fins 523 are evenly arranged. These fins are closely attached above the converging air passage area 522, which helps to quickly dissipate local heat. At the same time, a pressure detection module 525 is arranged in the converging air passage area 522 to monitor in real time the air pressure changes caused by the movement of the four piston rods 53 in the piston air passage 521. By accurately obtaining the air pressure value of the converging air passage area 522, the module realizes the indirect judgment and data feedback of the size, position or deformation of the battery block 100. Through the matching effect of the heat conduction plate 524 and the heat dissipation fins 523, the heat accumulation in the detection area can be effectively controlled, and the temperature balance of the detection station during long-term operation can be improved; the arrangement of the pressure detection module 525 enables the system to uniformly convert the actions of the piston rods 53 in multiple directions into concentrated and stable pressure signals, thus significantly improving the sensitivity and response efficiency of shape recognition.

[0037] As Figure 6 and Figure 7 shown, in some examples, furthermore, the temperature stabilizing and cleaning assembly 70 includes an air storage tank 71, and also includes: a high-pressure air supply pipe 72 and a cleaning air supply pipe 73. One end of the high-pressure air supply pipe 72 is connected to the output end of the air storage tank 71, and the other end is connected to form an air expansion end in the converging air passage area 522, for releasing the high-pressure gas in the air storage tank 71 below the heat conduction plate 524 in the low-pressure area; a constant-pressure air supply valve 721 is arranged on the high-pressure air supply pipe 72; one end of the cleaning air supply pipe 73 is connected in the converging air passage area 522, and the other end is connected to the air cylinder 81. An electric control valve 731 is arranged on the cleaning air supply pipe 73.

[0038] In this embodiment, to further optimize the functional performance of the OCV detection station in terms of temperature control and ear cleaning of the battery block 100, a pneumatic auxiliary mechanism integrating temperature stabilization control and cleaning jet functions is provided. The temperature stabilization and cleaning assembly 70 not only includes an air storage tank 71, but also a high-pressure air supply pipe 72 and a cleaning air supply pipe 73. Specifically, one end of the high-pressure air supply pipe 72 is connected to the output end of the air storage tank 71, and the other end extends and is connected to the converging air passage area 522 inside the temperature stabilization seat 52, thereby forming an air expansion end in this area. This expansion end is arranged below the heat conduction plate 524 and can release the high-pressure gas in the air storage tank 71 into the low-pressure air cavity, realizing the gas expansion heat absorption effect. Through the combination of air flow drive and heat conduction structure, the heat in the monitoring area can be quickly taken away, so as to maintain the detection environment at a constant temperature lower than the surrounding environment and prevent heat accumulation from affecting the stability of battery detection. A constant pressure air supply valve 721 is provided on the high-pressure air supply pipe 72, and this valve can automatically adjust the air supply flow according to the real-time pressure state of the converging air passage area 522. When the pressure in the converging air passage area 522 is lower than the set threshold (which occurs during the process of all clamping parts and the piston rod 53 moving outward and resetting after the detection of the current battery block 100 is completed), the valve automatically opens for air replenishment to ensure that the sealed cavity is always at a constant pressure value before each battery detection. Then, the gas is compressed by the piston rod 53 to reflect the displacement of the piston rod 53 according to the air pressure, so as to reflect the volume size parameters of the current battery.

[0039] On the other hand, the intake end of the cleaning air supply pipe 73 is also connected to the converging air passage area 522, and the other end is introduced into the air cylinder 81. An electric control valve 731 is provided on the cleaning air supply pipe 73, which can control the air supply timing electrically (after the clamping of the battery block 100 is completed and immediately before the OCV test is about to be carried out). After the gas enters the air cylinder 81, on the one hand, it can gently push the displacement rod 82 to drive the test probe to move, realizing non-destructive contact with the battery ear; on the other hand, the gas can also be released from the test probe and form a directional air flow to directly blow and clean the surface of the battery ear, effectively removing dust, inhibiting the generation of oxide layers (such as using inert gas for the gas) or other tiny particles, and improving the contact quality and detection accuracy. To ensure safety and cleaning effect, the gas used in this system is preferably an inert gas such as nitrogen, which not only has good cleaning ability, but also can avoid detection interference caused by conductivity or chemical reaction. In summary, through the combination of high-pressure air supply and intelligent control, this supplementary embodiment significantly improves the temperature control efficiency and ear cleaning effect of the OCV detection station, and enhances the consistency of the detection results of the whole machine.

[0040] As Figure 10As shown, in some examples, further, the test contact component 83 includes: two moving rods 831, a docking seat 832, a probe 833, a force-sensitive switch 834, and a trigger block 835. The two moving rods 831 are fixedly arranged on the displacement rod 82; the docking seat 832 is fixedly arranged at the end of the moving rod 831, and a jet orifice is arranged inside the docking seat 832; the probe 833 is fixedly arranged in a protruding state on a side wall surface of the docking seat 832 facing the tab; the force-sensitive switch 834 is fixedly arranged on the bottom end surface of the docking seat 832. The force-sensitive switch 834 is a directional pressure switch, and the force-sensitive switch 834 is used to control the opening and closing of the jet orifice; the trigger block 835 is fixedly arranged on the surface of the workbench 10 between the force-sensitive switch 834 and the tab, and the trigger block 835 is used to instantaneously trigger the force-sensitive switch 834 to open the jet orifice.

[0041] In this embodiment, to further improve the contact reliability of the test contact component 83 and the real-time response ability of the tab cleaning during the OCV detection process, and to control the cleaning timing, a structure of the test contact component 83 with a pressure-controlled air jet function is provided. Specifically, the two moving rods 831 are fixedly arranged in parallel on the displacement rod 82 and are respectively connected to two test ends. A docking seat 832 is fixedly connected to the end of each moving rod 831. A jet orifice for gas cleaning is arranged inside the docking seat 832, and the jet orifice is arranged in the direction of the battery tab. On the side wall surface of the docking seat 832 facing the tab, a probe 833 arranged in a protruding state is installed. The probe 833 is used to realize the electrical contact function with the battery tab to ensure the stability of the OCV detection signal acquisition. To realize the automatic cleaning control during the probe contact process, a force-sensitive switch 834 is arranged at the bottom end of the docking seat 832. This switch is a directional pressure switch, which can respond and trigger after reaching the set contact force and control the opening and closing state of the jet orifice. Also used in cooperation with the force-sensitive switch 834 is a trigger block 835 fixedly installed on the surface of the workbench 10 between the force-sensitive switch 834 and the tab. When the probe 833 moves with the displacement rod 82 to the tab contact position and presses against the trigger block 835, the trigger block 835 will instantaneously act on the force-sensitive switch 834 to start the jet orifice to open instantaneously, releasing a directional air flow to clean the surface of the tab. This cleaning process exactly occurs at the time points before and after the test contact, which not only ensures the cleanliness of the contact point of the probe 833 but also avoids the air flow interfering with the OCV electrical signal acquisition process. It not only realizes the physical coupling control of the electrical contact and cleaning actions but also realizes the automatic cooperation of triggering and jetting in a non-electric drive manner, simplifies the control system, enhances the response speed and on-site adaptability of the detection equipment, and greatly improves the intelligent level of the overall OCV detection station under high-speed detection conditions.

[0042] As Figure 9As shown, in some examples, further, the clamping seat 51 includes four seat bodies 511 penetrating through the workbench 10, and further includes: two adjusting rods 512, a locking bolt 513, a movable plate 514, and a piezoelectric module 515. The two adjusting rods 512 respectively penetrate through both ends of the clamping seat 51 and can move closer to or away from the battery block 100; the locking bolt 513 is vertically arranged at the top of the clamping seat 51 and can abut and lock the adjusting rod 512; the movable plate 514 is respectively rotatably connected to the ends of the adjusting rods 512 through the first hinge seats 516 and the second hinge seats 517 arranged 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.

[0043] In this embodiment, to achieve adjustable clamping control of the battery block 100 to adapt to batteries with special-shaped structures, specifically, in this example, each clamping seat 51 is arranged to penetrate through the workbench 10 and is distributed along the circumferential side of the battery block 100. The two adjusting rods 512 respectively penetrate through both ends of the clamping seat 51 and can move closer to or away from the battery block 100 in the horizontal direction, so as to achieve precise adjustment and clamping of the battery block 100 in different sizes or postures. A locking bolt 513 is vertically arranged at the top of the clamping seat 51. The locking bolt 513 can apply a downward force and abut against the adjusting rod 512, so as to perform clamping and locking after adjusting to the target clamping position, prevent the adjusting rod 512 from generating displacement, and ensure the stability and reliability of the clamping position. The movable plate 514 is respectively rotatably connected to the ends of the two adjusting rods 512 through the first hinge seats 516 and the second hinge seats 517 arranged on its two ends, thereby forming a clamping surface structure that can dynamically adjust the angle with the change of the position of the adjusting rod 512. At least one hinge seat adopts a sliding rotation point design, which can adapt to different angle changes during the movement of the adjusting rod 512. A piezoelectric module 515 is fixedly installed on the outer wall of the movable plate 514 on the side facing the battery block 100. When the movable plate 514 undergoes small deformations or vibrations during the contact with the battery block 100, the piezoelectric module 515 can collect mechanical response signals in real time to monitor the clamping and locking state with the battery outer wall. Therefore, this embodiment provides a mechanical clamping unit with flexible structure, convenient adjustment, and reliable clamping, and also realizes the real-time monitoring and dynamic feedback capabilities during the clamping process through the integrated piezoelectric sensing technology.

[0044] As Figure 1 shown, in some examples, further, a display 90 bracket and a display 90 are further arranged on the vertical support mechanism 20. The display 90 is connected to the signal output end of the OCV detection device and is used to display the OCV open-circuit test data of the current battery block 100.

[0045] The OCV detection station for battery health status detection provided by the present invention, combined with multiple groups of collaboratively controllable structural components and pneumatic components, can realize 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 detection, and detection result output. The principle is described in detail as follows: First, after the battery block 100 is sent to the workbench 10, the workstation starts the initial positioning process. At this time, the four clamping seats 51 located on the surface of the workbench 10 begin to approach the battery block 100 along the linear slide under the drive of the synchronous moving mechanism 40, and the four driving rods 42 are driven to operate in conjunction through the synchronous driving frame 41 connected to the telescopic end of the telescopic driving device 30, so that the clamping seats 51 are uniformly and synchronously close to the battery block 100 to complete the outer contour encirclement. The piston rod 53 set in each clamping seat 51 is synchronously inserted into the piston airway 521 located inside the temperature stabilizing seat 52 during the movement, and pushes the gas into the convergent airway area 522, causing the air pressure in the cavity to change. At the same time, the piezoelectric module 515 at the front end of the movable plate 514 is close to the battery block 100. When any clamping seat 51 first contacts the battery block 100, its corresponding piezoelectric module 515 collects a contact pressure signal, which will be fed back to the control system, triggering the telescopic driving device 30 to stop the current propulsion action, forming the current preliminary clamping state.

[0046] 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 detected battery 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, it is judged that the battery size is 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 in 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.

[0047] If the battery size is qualified, the system enters the cleaning preparation and OCV detection stage. At this time, the constant pressure gas supply valve 721 controls the high-pressure gas in the gas storage tank 71 to be released to the air expansion end below the heat conduction plate 524. The heat is taken away by the rapid expansion of the gas, and the temperature of the area where the battery block 100 is located is stabilized, making it lower than the ambient temperature, to prevent the temperature rise caused by the internal resistance of the battery from affecting the test accuracy. Subsequently, the electric control valve 731 is opened to guide the compressed inert gas (such as nitrogen) to the gas cylinder 81 in the OCV detection equipment, pushing the displacement rod 82 forward. The test contact assemblies 83 at both ends of the displacement rod 82 then approach the battery ears, and the probe 833 contacts the ears through flexible spring pressure.

[0048] When contact is about to occur, the trigger block 835 fixed on the surface of the workbench 10 acts on the directional force switch 834 below the probe 833, instantaneously opening the ejection port to eject a cleaning air flow onto the surface of the tab, removing surface impurities, and ensuring that the probe 833 makes contact with a clean surface. Subsequently, the force switch 834 disconnects, and the air jet ends. The probe 833 continues to move forward and makes flexible contact with the tab. The gas pushing the probe 833 to make contact also plays a buffering role, avoiding hard impacts and protecting the tab structure.

[0049] Finally, the OCV detection device completes the measurement of the open-circuit voltage of the tab, records the voltage value, and determines whether the battery health status is qualified according to the preset judgment criteria. After the detection is completed, the reset drive base 84 starts, and through the electromagnetic repulsion or elastic reset mechanism, it pushes the force block 85 back, automatically resetting the displacement rod 82 and the test contact assembly 83 to their initial positions. At the same time, the synchronous movement mechanism 40 drives the four clamping seats 51 to open in the reverse direction, releasing the battery block 100. Then, the air pressure in the sealing cavity decreases, and the inert gas in the gas storage tank 71 automatically replenishes the air pressure in the sealing cavity to a constant parameter under the action of the constant-pressure gas supply valve 721, preparing for the test of the next battery block 100. Thus, a complete automatic detection process is completed. If the detection is qualified, the system generates a qualified signal, and the battery enters the next process; if it is unqualified, it is automatically rejected or an alarm instruction is issued to prevent defective products from flowing into the subsequent process. This detection station significantly improves the detection accuracy, speed, and automation level through the high integration of structure and function, and is suitable for the detection requirements of high-tempo and high-precision battery production lines.

[0050] The above are only embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. An OCV detection station for detecting the state of health of a battery, comprising a workbench (10) for detecting a battery block (100), characterized in that, Also includes: A vertical support mechanism (20) located outside the workbench (10); A telescopic drive device (30), comprising a telescopic end, the telescopic end being capable of telescopic movement perpendicular to the surface direction of the workbench (10); A synchronous moving mechanism (40) connected to the telescopic end of the telescopic driving device (30); A shape acquisition mechanism (50) is movably clamped on the surface of the workbench (10) in a direction close to or away from the circumference of the battery block (100), and the shape acquisition mechanism (50) is transmission-connected to the synchronous movement mechanism (40); A 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) is capable of moving toward or away from the upper end surface of the battery block (100); A temperature stabilization and cleaning component (70) comprising 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 of the OCV testing device (80) 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 arranged below the workbench (10), a pressure detection module (525) is also arranged in the sealed cavity, and the shape acquisition mechanism (50) can synchronously enter the sealed cavity when moving close to the battery block (100), so as 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), the OCV detection device (80) is further provided with an injection port facing the pole lug, the injection port is connected to the exhaust outlet, and the injection port is used to clean the pole lug.

2. The OCV detection station for battery state of health detection according to claim 1, wherein: The vertical support mechanism (20) comprises: An outer support frame (22) is fixedly arranged in a vertical direction; A vertical sliding rod (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 sliding rod (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).

3. The OCV detection station for detecting the state of health of a battery according to claim 2, wherein: 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 is located inside all the clamping seats (51), and the sealing cavity is opened in the temperature stabilizing seat (52); The piston rod (53) is fixedly arranged horizontally inside the clamping seat (51), and the piston rod (53) is 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). Part of the sealing cavity is also opened in the inner cavity at the upper end of the guide cylinder (54). A guide groove (541) is arranged in the lower half of the guide cylinder (54). The upper end of the telescopic end of the telescopic driving device (30) can be slidably clamped in the guide groove (541).

4. The OCV detection station for battery state of health detection according to claim 3, wherein: The OCV detection device (80) includes: An air cylinder (81) is fixedly installed on the outer support frame (22); A displacement rod (82) is arranged above the workbench (10) 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 tab in the test area; A force receiving block (85) is fixedly arranged on the side wall of the displacement rod (82) facing the battery block (100); A reset driving seat (84) is fixedly arranged on the workbench (10) for applying a thrust to the force receiving block (85) to reset the two test contact assemblies (83).

5. The OCV detection station for detecting the state of health of a battery according to claim 4, wherein: The synchronous moving mechanism (40) includes: A synchronous driving frame (41) is fixedly sleeved on the telescopic end of the telescopic driving device (30). The length-width ratio of the synchronous driving frame (41) is the same as the length-width ratio of the rectangular area formed by enclosing the four clamping seats (51); Four driving rods (42), one end of each of which is rotatably connected to the side wall of the synchronous driving frame (41), and the other end of each driving rod (42) is rotatably connected to the clamping seat (51).

6. The OCV detection station for detecting the battery health state according to claim 5, characterized in that: The sealing cavity includes: Four piston air passages (521) are respectively opened in a straight line in the inner walls of the four side wall directions of the temperature stabilizing seat (52). The piston rod (53) can be linearly arranged movably in the piston air passage (521); A converging air passage area (522) is fixedly opened in the inner cavity of the temperature stabilizing seat (52) and is connected to the central position of the four piston air passages (521); Inside the temperature stabilizing seat (52), there is also provided: A 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); A plurality of heat radiating fins (523) are fixedly arranged on the bottom wall of the heat conducting plate (524) above the converging air passage area (522); A pressure detection module (525) is fixedly arranged in the converging air passage area (522) for obtaining the pressure value of the converging air passage area (522) that changes according to the displacement of the piston rod (53).

7. The OCV detection station for battery state of health detection according to claim 6, wherein: The temperature stabilizing and cleaning assembly (70) includes an air storage tank (71), and also includes: A high-pressure gas supply pipe (72) has one end connected to the output end of the gas storage tank (71) and the other end connected to form an air expansion end within the converging air duct region (522), and is used to release the high-pressure gas in the gas storage tank (71) below the heat conduction plate (524) in the low-pressure region; a constant-pressure gas supply valve (721) is provided on the high-pressure gas supply pipe (72); A cleaning gas supply pipe (73) has one end connected within the converging air duct region (522) and the other end connected within the air cylinder (81), and an electric control valve (731) is provided on the cleaning gas supply pipe (73).

8. The OCV detection station for battery state of health detection according to claim 7, characterized in that: The test contact assembly (83) includes: Two moving rods (831) fixedly arranged on the displacement rod (82); A docking seat (832) fixedly arranged at the end of the moving rod (831), and a spray port is arranged within the docking seat (832); A probe (833) fixedly arranged in a protruding state on a side wall surface of the docking seat (832) facing the tab; A force switch (834) fixedly arranged on the bottom end surface 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 spray port; A trigger block (835) 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 spray port.

9. The OCV detection station for detecting the battery health state according to claim 4, wherein: The clamping seat (51) includes four seat bodies (511) penetrating through the workbench (10), and further includes: Two adjusting rods (512) respectively penetrating through both ends of the clamping seat (51) and capable of moving closer to or farther away from the battery block (100); A locking bolt (513) vertically arranged at the top end of the clamping seat (51) and capable of abutting and locking the adjusting rod (512); A movable plate (514) respectively rotatably connected to the ends of the adjusting rods (512) through first hinge seats (516) and second hinge seats (517) arranged at both ends of the movable plate itself, wherein the rotation points of the first hinge seat (516) or the second hinge seat (517) are sliding rotation points; A piezoelectric module (515) fixedly arranged on the outer wall of the movable plate (514) on the side facing the battery block (100).

10. The OCV detection station for detecting the battery health state according to claim 1, characterized in that: A display bracket and a display (90) are further arranged 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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