OCV testing fixture

Abstract

This disclosure provides an OCV testing fixture. The OCV testing fixture includes a platform frame, a drive mechanism, and an OCV testing mechanism. The platform frame is equipped with a feeding assembly for assisting in the conveying of battery cells. The drive mechanism is mounted on the platform frame. The OCV testing mechanism includes a mounting plate assembly, a first test probe assembly, and a second test probe assembly. The power output end of the drive mechanism is connected to the mounting plate assembly, and the drive mechanism drives the mounting plate assembly to move relative to the platform frame. The connection position between the first test probe assembly and the mounting plate assembly is adjustable, and the connection position between the second test probe assembly and the mounting plate assembly is adjustable. The first test probe assembly is used to connect to the positive terminal of the battery cell, and the second test probe assembly is used to connect to the negative terminal of the battery cell. The above-mentioned OCV testing fixture offers good ease of use.

Description

Technical Field

[0001] This disclosure relates to the technical field of battery cell testing fixtures, and in particular to an OCV testing fixture. Background Technology

[0002] Before a battery cell goes online, it needs to undergo an OCV (Open Circuit Voltage) test. Typically, an automated OCV testing device is used to test the voltage and internal resistance of the battery cell, and the barcode of the battery cell is scanned and recorded. At the same time, qualified and defective battery cells are classified and processed.

[0003] The related OCV automatic testing equipment includes a main body, a conveyor line, an OCV testing fixture, and a control system. The control system is installed on the main body. The conveyor line is connected to both the main body and the OCV testing fixture. The conveyor line is used to transport battery cells. The control system is electrically connected to the OCV testing fixture. The control system controls the OCV testing fixture to perform OCV testing on the battery cells through a program, realizing fully automatic data recording, barcode scanning, and data archiving, and classifying qualified and defective battery cells.

[0004] During the cell replacement process, the control system uses a control program to control the OCV test fixture to perform OCV testing on the cell. However, different cell models have different external dimensions, which requires adjustments to both the control program and the OCV test fixture. This makes the cell replacement operation more difficult and reduces the ease of use of the automated OCV testing equipment. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide an OCV testing fixture with better ease of use.

[0006] The purpose of this disclosure is achieved through the following technical solution:

[0007] An OCV testing fixture, comprising:

[0008] The platform frame is equipped with a feeding assembly for assisting in the conveying of battery cells;

[0009] The drive mechanism is mounted on the platform frame;

[0010] The OCV testing mechanism includes a mounting plate assembly, a first test probe assembly, and a second test probe assembly. The power output end of the drive mechanism is connected to the mounting plate assembly, and the drive mechanism is used to drive the mounting plate assembly to move relative to the platform frame. The connection position between the first test probe assembly and the mounting plate assembly is adjustable, and the connection position between the second test probe assembly and the mounting plate assembly is adjustable. The first test probe assembly is used to connect to the positive terminal of the battery cell, and the second test probe assembly is used to connect to the negative terminal of the battery cell.

[0011] In one embodiment, the first test probe assembly includes a first probe holder and a first test probe part connected together; the first test probe part is used to connect to the positive terminal of the battery cell; the first probe holder is connected to the mounting plate assembly, the connection angle between the first probe holder and the mounting plate assembly is adjustable, the position where the first probe holder is connected to the mounting plate assembly is a first connection position, and the distance between the first connection position and the first test probe part is adjustable.

[0012] In one embodiment, the first probe holder has a first connection hole, and the mounting plate assembly has a second connection hole. The first connection hole and the second connection hole communicate with each other, and at least one of the first connection hole and the second connection hole has an oblong hole structure. The OCV testing mechanism further includes a first adjusting fastener, which passes through the first connection hole and the second connection hole. One end of the first adjusting fastener abuts against the first probe holder, and the other end of the first adjusting fastener is fastened to the mounting plate assembly, so that the first adjusting fastener fixes the first probe holder on the mounting plate assembly. The position where the first adjusting fastener abuts against the first probe holder is the first connection position.

[0013] In one embodiment, the second test probe assembly includes a second probe holder and a second test probe part connected together; the second test probe part is used to connect to the negative terminal of the battery cell; the second probe holder is connected to the mounting plate assembly, the connection angle between the second probe holder and the mounting plate assembly is adjustable, the position where the second probe holder is connected to the mounting plate assembly is a second connection position, and the distance between the second connection position and the second test probe part is adjustable.

[0014] In one embodiment, the second probe holder has a third connecting hole, and the mounting plate assembly has a fourth connecting hole. The third connecting hole communicates with the fourth connecting hole, and at least one of the third and fourth connecting holes has an oblong hole structure. The OCV testing mechanism further includes a second adjusting fastener, which passes through the third and fourth connecting holes. One end of the second adjusting fastener abuts against the second probe holder, and the other end of the second adjusting fastener is fastened to the mounting plate assembly, so that the second adjusting fastener fixes the second probe holder to the mounting plate assembly. The position where the second adjusting fastener abuts against the second probe holder is the second connecting position.

[0015] In one embodiment, the platform frame has a conveying channel, the feeding assembly is located in the conveying channel, the feeding assembly includes a plurality of rotating conveying rollers, the plurality of rotating conveying rollers are spaced apart, each rotating conveying roller is rotatably connected to the inner wall of the conveying channel, so that each rotating conveying roller rotates relative to the platform frame to assist in conveying the battery cell.

[0016] In one embodiment, the number of the feeding assembly, the mounting plate assembly, the first test probe assembly, the second test probe assembly, and the conveying channel are all two, and the two feeding assemblies, the two mounting plate assemblies, the two first test probe assemblies, the two second test probe assemblies, and the two conveying channels are arranged in a one-to-one correspondence.

[0017] In one embodiment, two mounting plate assemblies are arranged opposite each other to form a connecting sliding groove. The OCV test fixture further includes a barcode scanning mechanism, which includes a first barcode scanning component, a connecting movable part, and a second barcode scanning component. The connecting movable part is connected to the first barcode scanning component and the second barcode scanning component respectively. The connecting movable part is located between the first barcode scanning component and the second barcode scanning component and is located within the connecting sliding groove. The connecting movable part is slidably connected to each of the mounting plate assemblies.

[0018] In one embodiment, the drive mechanism includes a mechanism body, a drive component, a fixed base, and a connecting component. The drive component is mounted on the mechanism body, the mechanism body is connected to the fixed base, the connecting component is slidably connected to the mechanism body, the power output end of the drive component is connected to the connecting component, and the drive component is used to drive the connecting component to slide relative to the mechanism body. The fixed base is mounted on the platform frame, and the connecting component is connected to the mounting plate assembly.

[0019] In one embodiment, the main body of the mechanism has a sliding cavity, the driving assembly includes a drive motor and a connecting screw, the connecting screw is located in the sliding cavity and rotatably connected to the main body of the mechanism, the drive motor is installed in the main body of the mechanism, the power output end of the drive motor is connected to the connecting screw, and the drive motor is used to drive the connecting screw to rotate relative to the main body of the mechanism; the connecting assembly is provided with a sliding part, the sliding part has an internal threaded hole, the sliding cavity communicates with the internal threaded hole, and the connecting screw passes through the internal threaded hole and is screwed to the sliding part.

[0020] Compared with the prior art, this disclosure has at least the following advantages:

[0021] 1. The platform frame is equipped with a feeding assembly for assisting in the conveying of battery cells, allowing workers to push the battery cells from the feeding end of the feeding assembly to the predetermined testing position. This ensures the battery cells are positioned opposite the OCV testing mechanism, facilitating the feeding process. The connection position between the first test probe assembly and the mounting plate assembly is adjustable, ensuring the first test probe assembly is directly above the positive terminal of the battery cell. Simultaneously, the connection position between the second test probe assembly and the mounting plate assembly is also adjustable, allowing for adjustments to the connection between the second test probe assembly and the mounting plate assembly. The connection position between the two is such that the second test probe assembly is positioned directly above the negative terminal of the battery cell; the drive mechanism is used to drive the mounting plate assembly to move relative to the platform frame, so that the drive mechanism is used to drive the mounting plate assembly to press down, so that both the first and second test probe assemblies are pressed down with the mounting plate assembly, so that the first test probe assembly contacts the positive terminal of the battery cell, so that the first test probe assembly is used to connect to the positive terminal of the battery cell, and at the same time, the second test probe assembly contacts the negative terminal of the battery cell, so that the second test probe assembly is used to connect to the negative terminal of the battery cell, thereby completing the OCV test of the battery cell;

[0022] 2. Because the connection position of each test probe assembly to the mounting plate assembly is adjustable, each test probe assembly is positioned directly opposite the corresponding terminal of the battery cell. Simultaneously, the drive mechanism can adjust the downward pressure height of each test probe assembly via the mounting plate assembly. This allows the OCV testing mechanism to be adjusted according to the dimensions of different battery cell models, enabling it to adapt to different battery cell models for OCV testing. This facilitates battery cell replacement and avoids the problem in existing technologies where both the control program and the OCV testing fixture need to be adjusted according to different battery cell models. The OCV testing fixture can meet the OCV testing requirements of different battery cell models simply by adjusting the position of the OCV testing mechanism. Compared to traditional automatic OCV testing equipment, the OCV testing fixture is less difficult to use for battery cell replacement, thus improving its ease of use. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an OCV testing fixture according to one embodiment;

[0025] Figure 2 for Figure 1 A magnified schematic diagram of point A on the OCV testing fixture shown;

[0026] Figure 3 for Figure 1 The diagram shows another view of the OCV testing fixture.

[0027] Reference numerals: 10-OCV test fixture; 20-battery cell; 100-platform frame; 110-feeding assembly; 111-rotating conveyor roller; 120-conveying channel; 130-blocking assembly; 140-sensing assembly; 200-drive mechanism; 210-mechanism body; 211-sliding cavity; 220-drive assembly; 221-drive motor; 222-connecting screw; 230-fixed base; 240-connecting assembly; 241-sliding part; 2411-internal threaded hole; 242-connecting plate; 300-OCV test mechanism; 310 - Mounting plate assembly; 311 - Connecting sliding groove; 320 - First test probe assembly; 321 - First probe holder; 3211 - First connecting hole; 322 - First test probe part; 330 - Second test probe assembly; 331 - Second probe holder; 3311 - Second connecting hole; 332 - Second test probe part; 400 - Scanning mechanism; 410 - First scanning assembly; 420 - Connecting movable part; 430 - Second scanning assembly; 500 - First adjusting fastener; 600 - Second adjusting fastener; 700 - Display assembly. Detailed Implementation

[0028] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] like Figures 1 to 3As shown, an OCV testing fixture 10 of one embodiment includes a platform frame 100, a drive mechanism 200, and an OCV testing mechanism 300. The platform frame 100 is provided with a feeding assembly 110 for assisting in the conveying of the battery cell 20. The drive mechanism 200 is mounted on the platform frame 100. The OCV testing mechanism 300 includes a mounting plate assembly 310, a first test probe assembly 320, and a second test probe assembly 330. The power output end of the drive mechanism 200 is connected to the mounting plate assembly 310. The drive mechanism 200 is used to drive the mounting plate assembly 310 to move relative to the platform frame 100. The connection position between the first test probe assembly 320 and the mounting plate assembly 310 is adjustable, and the connection position between the second test probe assembly 330 and the mounting plate assembly 310 is adjustable. The first test probe assembly 320 is used to connect to the positive terminal of the battery cell 20, and the second test probe assembly 330 is used to connect to the negative terminal of the battery cell 20.

[0032] In this embodiment, the drive mechanism 200 drives the mounting plate assembly 310 to move relative to the platform frame 100, and the direction of movement of the mounting plate assembly 310 forms an angle with the conveying direction of the battery cell 20, so that the first test probe assembly 320 and the second test probe assembly 330 can each act on the two terminals of the battery cell. The connection position between the first test probe assembly 320 and the mounting plate assembly 310 is adjustable, thereby adjusting the connection position between the first test probe assembly 320 and the mounting plate assembly 310; the connection position between the second test probe assembly 330 and the mounting plate assembly 310 is also adjustable, thereby adjusting the connection position between the second test probe assembly 330 and the mounting plate assembly 310.

[0033] The aforementioned OCV testing fixture 10, with its platform frame 100 equipped with a feeding assembly 110 for assisting in the transport of the battery cell 20, allows operators to push the battery cell 20 from the feeding end of the feeding assembly 110 to a predetermined testing position, ensuring the battery cell 20 is positioned opposite the OCV testing mechanism 300 for feeding. The connection position between the first test probe assembly 320 and the mounting plate assembly 310 is adjustable, allowing the first test probe assembly 320 to be positioned directly above the positive terminal of the battery cell 20. Simultaneously, the connection position between the second test probe assembly 330 and the mounting plate assembly 310 is also adjustable, allowing the second test probe assembly 330 to be positioned directly above the positive terminal of the battery cell 20. The connection position between components 310 is such that the second test probe assembly 330 is positioned directly above the negative terminal of the battery cell 20; the drive mechanism 200 drives the mounting plate assembly 310 to move relative to the platform frame 100, so that the drive mechanism 200 drives the mounting plate assembly 310 to press down, so that both the first test probe assembly 320 and the second test probe assembly 330 press down with the mounting plate assembly 310, so that the first test probe assembly 320 contacts the positive terminal of the battery cell 20, so that the first test probe assembly 320 is used to connect to the positive terminal of the battery cell 20, and at the same time, the second test probe assembly 330 contacts the negative terminal of the battery cell 20, so that the second test probe assembly 330 is used to connect to the negative terminal of the battery cell 20, thereby completing the OCV test of the battery cell 20;

[0034] Since the connection position of each test probe assembly to the mounting plate assembly 310 is adjustable, each test probe assembly is positioned directly opposite the corresponding terminal of the battery cell 20. Simultaneously, the drive mechanism 200 can adjust the downward pressure height of each test probe assembly via the mounting plate assembly 310. This allows the OCV testing mechanism 300 to be adjusted in position according to the dimensions of different battery cell models 20. This positional adjustment allows the OCV testing mechanism 300 to be adapted to different battery cell models for OCV testing, facilitating the replacement of battery cell models. This avoids the problem in existing technologies where the control program and OCV testing fixture need to be adjusted according to different battery cell models 20. The OCV testing fixture 10 can meet the OCV testing requirements of different battery cell models 20 simply by adjusting the position of the OCV testing mechanism 300. Compared to traditional automatic OCV testing equipment, the OCV testing fixture 10 has less difficulty in changing battery cell models 20, thus making it more convenient to use.

[0035] like Figures 1 to 2As shown, in one embodiment, the first test probe assembly 320 includes a first probe holder 321 and a first test probe part 322 connected to each other; the first test probe part 322 is used to connect to the positive terminal of the battery cell 20; the first probe holder 321 is connected to the mounting plate assembly 310, the connection angle between the first probe holder 321 and the mounting plate assembly 310 is adjustable, the position where the first probe holder 321 is connected to the mounting plate assembly 310 is the first connection position, and the distance between the first connection position and the first test probe part 322 is adjustable, so that the adjustment between the first test probe assembly 320 and the mounting plate assembly 310 is convenient.

[0036] like Figures 1 to 2 As shown, in one embodiment, the first probe seat 321 has a first connecting hole 3211, and the mounting plate assembly 310 has a second connecting hole (not shown). The first connecting hole 3211 and the second connecting hole communicate with each other. At least one of the first connecting hole 3211 and the second connecting hole is a waist-shaped hole structure. The OCV testing mechanism 300 also includes a first adjusting fastener 500, which passes through the first connecting hole 3211 and the second connecting hole. One end of the first adjusting fastener 500 abuts against the first probe seat 321, and the other end of the first adjusting fastener 500 is fastened to the mounting plate assembly 310, so that the first adjusting fastener 500 fixes the first probe seat 321 onto the mounting plate assembly 310. The position where the first adjusting fastener 500 abuts against the first probe seat 321 is the first connecting position. In this embodiment, the first connecting hole 3211 is an oblong hole structure, the second connecting hole is a round hole structure, and the first adjusting fastener 500 includes a first adjusting bolt and a first fastening nut. The first adjusting bolt passes through the first connecting hole 3211 and the second connecting hole. One end of the first adjusting bolt abuts against the first probe seat 321, and the other end of the first adjusting bolt is threadedly connected to the first fastening nut. The first fastening nut abuts against the side of the mounting plate assembly 310 away from the first probe seat 321, so that the first adjusting bolt and the first fastening nut work together to fix the first probe seat 321 onto the mounting plate assembly 310.

[0037] Specifically, when the first adjusting bolt moves away from the first probe seat 321, it separates from the first probe seat 321, thereby loosening the first probe seat 321. This allows the operator to rotate the first probe seat 321 relative to the mounting plate assembly 310 by a predetermined angle, thus adjusting the connection angle between the first probe seat 321 and the mounting plate assembly 310. Furthermore, the first adjusting bolt passes through the first connecting hole 3211, allowing the operator to slide the first probe seat 321 relative to the first adjusting bolt a predetermined distance by hand, thereby allowing the first probe seat 321 to slide relative to the first adjusting fastener 500. A predetermined distance is set so that the distance between the first connection position and the first test probe 322 can be adjusted until the first test probe 322 is directly opposite the positive terminal of the cell 20. Then, the operator turns the first adjusting bolt by hand and moves it towards the first probe holder 321, so that one end of the first adjusting bolt abuts against the first probe holder 321 again, which is used to fix the position between the first probe holder 321 and the mounting plate assembly 310. At this time, the first test probe 322 is located directly above the positive terminal of the cell 20, which makes the adjustment between the first test probe assembly 320 and the mounting plate assembly 310 more convenient.

[0038] Furthermore, in one embodiment, both the first connecting hole 3211 and the second connecting hole are oblong hole structures. The first adjusting fastener 500 includes a first adjusting bolt and a first fastening nut. The first adjusting bolt passes through the first connecting hole 3211 and the second connecting hole. One end of the first adjusting bolt abuts against the first probe seat 321, and the other end of the first adjusting bolt is threadedly connected to the first fastening nut. The first fastening nut abuts against the side of the mounting plate assembly 310 away from the first probe seat 321, so that the first adjusting bolt and the first fastening nut work together to fix the first probe seat 321 onto the mounting plate assembly 310.

[0039] Specifically, when the first adjusting bolt moves away from the first probe seat 321, it separates from the first probe seat 321, thereby loosening the first probe seat 321. This allows the operator to rotate the first probe seat 321 relative to the mounting plate assembly 310 by a predetermined angle, thus adjusting the connection angle between the first probe seat 321 and the mounting plate assembly 310. Furthermore, the first adjusting bolt passes through the first connecting hole 3211 and the second connecting hole, allowing the operator to slide the first probe seat 321 relative to the first adjusting bolt a predetermined distance by hand, thereby adjusting the first probe seat 321 relative to the first adjusting fastener 50. The distance between the first connection position and the first test probe 322 is adjusted by sliding a predetermined distance until the first test probe 322 is directly opposite the positive terminal of the battery cell 20. Then, the operator turns the first adjusting bolt by hand and moves it closer to the first probe holder 321, so that one end of the first adjusting bolt abuts against the first probe holder 321 again, thereby fixing the position between the first probe holder 321 and the mounting plate assembly 310. At this time, the first test probe 322 is located directly above the positive terminal of the battery cell 20, which makes the adjustment between the first test probe assembly 320 and the mounting plate assembly 310 more convenient.

[0040] Furthermore, in one embodiment, the first connecting hole 3211 is an oblong hole structure, the second connecting hole is a connecting screw hole structure, and the first adjusting fastener 500 includes a first adjusting bolt. The first adjusting bolt passes through the first connecting hole 3211 and the second connecting hole. One end of the first adjusting bolt abuts against the first probe seat 321, and the other end of the first adjusting bolt is threadedly connected to the mounting plate assembly 310, so that the first adjusting bolt fixes the first probe seat 321 onto the mounting plate assembly 310.

[0041] Specifically, when the first adjusting bolt moves away from the first probe seat 321, it separates from the first probe seat 321, thereby loosening the first probe seat 321. This allows the operator to rotate the first probe seat 321 relative to the mounting plate assembly 310 by a predetermined angle, thus adjusting the connection angle between the first probe seat 321 and the mounting plate assembly 310. Furthermore, the first adjusting bolt passes through the first connecting hole 3211, allowing the operator to slide the first probe seat 321 relative to the first adjusting bolt a predetermined distance by hand, thereby allowing the first probe seat 321 to slide relative to the first adjusting fastener 500. A predetermined distance is set so that the distance between the first connection position and the first test probe 322 can be adjusted until the first test probe 322 is directly opposite the positive terminal of the cell 20. Then, the operator turns the first adjusting bolt by hand and moves it towards the first probe holder 321, so that one end of the first adjusting bolt abuts against the first probe holder 321 again, which is used to fix the position between the first probe holder 321 and the mounting plate assembly 310. At this time, the first test probe 322 is located directly above the positive terminal of the cell 20, which makes the adjustment between the first test probe assembly 320 and the mounting plate assembly 310 more convenient.

[0042] Furthermore, in one embodiment, a first connecting washer is provided at the connection between one end of the first adjusting bolt and the first probe seat 321 to increase the contact area between one end of the first adjusting bolt and the first probe seat 321, thereby improving the connection stability between the first adjusting bolt and the first probe seat 321.

[0043] like Figures 1 to 2 As shown, in one embodiment, the second test probe assembly 330 includes a second probe holder 331 and a second test probe part 332 connected to each other; the second test probe part 332 is used to connect to the negative terminal of the battery cell 20; the second probe holder 331 is connected to the mounting plate assembly 310, the connection angle between the second probe holder 331 and the mounting plate assembly 310 is adjustable, the position where the second probe holder 331 is connected to the mounting plate assembly 310 is the second connection position, and the distance between the second connection position and the second test probe part 332 is adjustable, so that the adjustment between the second test probe assembly 330 and the mounting plate assembly 310 is convenient.

[0044] like Figures 1 to 2As shown, in one embodiment, the second probe seat 331 has a third connecting hole 3311, and the mounting plate assembly 310 has a fourth connecting hole (not shown). The third connecting hole 3311 communicates with the fourth connecting hole, and at least one of the third connecting hole 3311 and the fourth connecting hole is a waist-shaped hole structure. The OCV testing mechanism 300 also includes a second adjusting fastener 600, which passes through the third connecting hole 3311 and the fourth connecting hole. One end of the second adjusting fastener 600 abuts against the second probe seat 331, and the other end of the second adjusting fastener 600 is fastened to the mounting plate assembly 310, so that the second adjusting fastener 600 fixes the second probe seat 331 onto the mounting plate assembly 310. The position where the second adjusting fastener 600 abuts against the second probe seat 331 is the second connecting position. In this embodiment, the third connecting hole 3311 is an oblong hole structure, the fourth connecting hole is a round hole structure, and the second adjusting fastener 600 includes a second adjusting bolt and a second fastening nut. The second adjusting bolt passes through the third connecting hole 3311 and the fourth connecting hole. One end of the second adjusting bolt abuts against the second probe seat 331, and the other end of the second adjusting bolt is threadedly connected to the second fastening nut. The second fastening nut abuts against the side of the mounting plate assembly 310 away from the second probe seat 331, so that the second adjusting bolt and the second fastening nut work together to fix the second probe seat 331 onto the mounting plate assembly 310.

[0045] Specifically, when the second adjusting bolt moves away from the second probe seat 331, it separates from the second probe seat 331, thereby loosening the second probe seat 331. This allows the operator to rotate the second probe seat 331 relative to the mounting plate assembly 310 by a predetermined angle, thus adjusting the connection angle between the second probe seat 331 and the mounting plate assembly 310. Furthermore, the second adjusting bolt passes through the third connecting hole 3311, allowing the operator to slide the second probe seat 331 relative to the second adjusting bolt a predetermined distance by hand, thereby allowing the second probe seat 331 to slide relative to the second adjusting fastener 600. A predetermined distance is set so that the distance between the second connection position and the second test probe 332 can be adjusted until the second test probe 332 is directly opposite the negative terminal of the cell 20. Then, the operator turns the second adjusting bolt by hand and moves it closer to the second probe seat 331 so that one end of the second adjusting bolt abuts against the second probe seat 331 again, thereby fixing the position between the second probe seat 331 and the mounting plate assembly 310. At this time, the second test probe 332 is located directly above the negative terminal of the cell 20, which makes the adjustment between the second test probe assembly 330 and the mounting plate assembly 310 more convenient.

[0046] Furthermore, in one embodiment, both the third connecting hole 3311 and the fourth connecting hole are oblong hole structures. The second adjusting fastener 600 includes a second adjusting bolt and a second fastening nut. The second adjusting bolt passes through the third connecting hole 3311 and the fourth connecting hole. One end of the second adjusting bolt abuts against the second probe seat 331, and the other end of the second adjusting bolt is threadedly connected to the second fastening nut. The second fastening nut abuts against the side of the mounting plate assembly 310 away from the second probe seat 331, so that the second adjusting bolt and the second fastening nut work together to fix the second probe seat 331 onto the mounting plate assembly 310.

[0047] Specifically, when the second adjusting bolt moves away from the second probe seat 331, it separates from the second probe seat 331, thereby loosening the second probe seat 331. This allows the operator to rotate the second probe seat 331 relative to the mounting plate assembly 310 by a predetermined angle, thus adjusting the connection angle between the second probe seat 331 and the mounting plate assembly 310. Furthermore, the second adjusting bolt passes through the third connecting hole 3311 and the fourth connecting hole, allowing the operator to slide the second probe seat 331 relative to the second adjusting bolt a predetermined distance by hand, thereby adjusting the second probe seat 331 relative to the second adjusting fastener 60. The distance between the second connection position and the second test probe 332 is adjusted by sliding a predetermined distance until the second test probe 332 is directly opposite the negative terminal of the battery cell 20. Then, the operator turns the second adjusting bolt by hand and moves it closer to the second probe holder 331, so that one end of the second adjusting bolt abuts against the second probe holder 331 again, thereby fixing the position between the second probe holder 331 and the mounting plate assembly 310. At this time, the second test probe 332 is located directly above the negative terminal of the battery cell 20, which makes the adjustment between the second test probe assembly 330 and the mounting plate assembly 310 more convenient.

[0048] Furthermore, in one embodiment, the third connecting hole 3311 is an oblong hole structure, the fourth connecting hole is a connecting screw hole structure, and the second adjusting fastener 600 includes a second adjusting bolt. The second adjusting bolt passes through the third connecting hole 3311 and the fourth connecting hole. One end of the second adjusting bolt abuts against the second probe seat 331, and the other end of the second adjusting bolt is threadedly connected to the mounting plate assembly 310, so that the second adjusting bolt fixes the second probe seat 331 onto the mounting plate assembly 310.

[0049] Specifically, when the second adjusting bolt moves away from the second probe seat 331, it separates from the second probe seat 331, thereby loosening the second probe seat 331. This allows the operator to rotate the second probe seat 331 relative to the mounting plate assembly 310 by a predetermined angle, thus adjusting the connection angle between the second probe seat 331 and the mounting plate assembly 310. Furthermore, the second adjusting bolt passes through the third connecting hole 3311, allowing the operator to slide the second probe seat 331 relative to the second adjusting bolt a predetermined distance by hand, thereby allowing the second probe seat 331 to slide relative to the second adjusting fastener 600. A predetermined distance is set so that the distance between the second connection position and the second test probe 332 can be adjusted until the second test probe 332 is directly opposite the negative terminal of the cell 20. Then, the operator turns the second adjusting bolt by hand and moves it closer to the second probe seat 331 so that one end of the second adjusting bolt abuts against the second probe seat 331 again, thereby fixing the position between the second probe seat 331 and the mounting plate assembly 310. At this time, the second test probe 332 is located directly above the negative terminal of the cell 20, which makes the adjustment between the second test probe assembly 330 and the mounting plate assembly 310 more convenient.

[0050] Furthermore, in one embodiment, a second connecting gasket is provided at the connection between one end of the second adjusting bolt and the second probe seat 331 to increase the contact area between one end of the second adjusting bolt and the second probe seat 331, thereby improving the connection stability between the second adjusting bolt and the second probe seat 331.

[0051] like Figures 1 to 3 As shown, in one embodiment, the platform frame 100 has a conveying channel 120, and the loading assembly 110 is located in the conveying channel 120. The loading assembly 110 includes a plurality of rotating conveying rollers 111, which are spaced apart. Each rotating conveying roller 111 is rotatably connected to the inner wall of the conveying channel 120, so that each rotating conveying roller 111 rotates relative to the platform frame 100 to assist in conveying the battery cell 20, thereby improving the ease of loading the battery cell 20 into the OCV test fixture 10.

[0052] like Figures 1 to 3 As shown, in one embodiment, there are two of each of the following components: the loading assembly 110, the mounting plate assembly 310, the first test probe assembly 320, the second test probe assembly 330, and the conveying channel 120. The two loading assemblies 110, the two mounting plate assemblies 310, the two first test probe assemblies 320, the two second test probe assemblies 330, and the two conveying channels 120 are arranged in a one-to-one correspondence, thereby effectively improving the testing efficiency of the OCV test fixture 10 for the battery cell 20.

[0053] like Figures 1 to 2 As shown, in one embodiment, two mounting plate assemblies 310 are arranged opposite each other and have a connecting sliding groove 311. The OCV test fixture 10 also includes a barcode scanning mechanism 400. The barcode scanning mechanism 400 includes a first barcode scanning component 410, a connecting movable part 420 and a second barcode scanning component 430. The connecting movable part 420 is connected to the first barcode scanning component 410 and the second barcode scanning component 430 respectively. The connecting movable part 420 is located between the first barcode scanning component 410 and the second barcode scanning component 430. The connecting movable part 420 is located in the connecting sliding groove 311 and is slidably connected to each mounting plate assembly 310. In this embodiment, both the first scanning component 410 and the second scanning component 430 are used to scan the battery cell 20; the connecting movable part 420 is slidably connected to each mounting plate component 310 so that the connecting movable part 420 slides in the connecting sliding groove 311, thereby better adjusting the scanning position of the first scanning component 410 and the second scanning component 430, making the scanning mechanism 400 more convenient to use.

[0054] like Figures 1 to 2 As shown, in one embodiment, the drive mechanism 200 includes a mechanism body 210, a drive component 220, a fixed base 230, and a connecting component 240. The drive component 220 is mounted on the mechanism body 210, and the mechanism body 210 is connected to the fixed base 230. The connecting component 240 is slidably connected to the mechanism body 210. The power output end of the drive component 220 is connected to the connecting component 240, and the drive component 220 is used to drive the connecting component 240 to slide relative to the mechanism body 210. The fixed base 230 is mounted on the platform frame 100, and the connecting component 240 is connected to the mounting plate assembly 310. In this embodiment, the drive component 220 is used to drive the connecting component 240 to slide relative to the mechanism body 210, and the connecting component 240 is connected to the mounting plate assembly 310, so that the connecting component 240 drives the mounting plate assembly 310 to slide relative to the mechanism body 210, thereby improving the reliability of the movement of the mounting plate assembly 310.

[0055] like Figures 1 to 2As shown, in one embodiment, the main body 210 of the mechanism has a sliding cavity 211. The drive assembly 220 includes a drive motor 221 and a connecting screw 222. The connecting screw 222 is located in the sliding cavity 211 and is rotatably connected to the main body 210 of the mechanism. The drive motor 221 is installed in the main body 210 of the mechanism. The power output end of the drive motor 221 is connected to the connecting screw 222. The drive motor 221 is used to drive the connecting screw 222 to rotate relative to the main body 210 of the mechanism. The connecting assembly 240 is provided with a sliding part 241. The sliding part 241 has an internal threaded hole 2411. The sliding cavity 211 communicates with the internal threaded hole 2411. The connecting screw 222 passes through the internal threaded hole 2411 and is screwed to the sliding part 241. In this embodiment, when the drive motor 221 is working, the drive motor 221 is used to drive the connecting screw 222 to rotate relative to the main body 210 of the mechanism, so as to drive the sliding part 241 to slide in the sliding cavity 211, thereby making the connecting component 240 slide relative to the main body 210 of the mechanism along with the sliding part 241, so as to make the movement stability of the connecting component 240 better.

[0056] like Figures 1 to 2 As shown, in one embodiment, the connecting assembly 240 further includes a connecting plate 242, which is connected to the sliding portion 241. One end of the connecting plate 242 facing away from the sliding portion 241 is connected to the mounting plate assembly 310. In this embodiment, the connecting plate 242 is welded to the sliding portion 241, resulting in better connection stability between the connecting plate 242 and the sliding portion 241, thereby improving the structural stability of the connecting assembly 240.

[0057] like Figures 1 to 3 As shown, in one embodiment, the platform rack 100 is further provided with a blocking component 130, which is used to block the battery cell 20, so that the battery cell 20 has better positional stability on the platform rack 100.

[0058] like Figures 1 to 3 As shown, in one embodiment, the platform frame 100 is further provided with a sensing component 140, which is electrically connected to the blocking component 130. The sensing component 140 is used to sense the position of the battery cell 20. In this embodiment, when the sensing component 140 senses that the battery cell 20 has reached the predetermined test position, the sensing component 140 drives the blocking component 130 to work through the control circuit, so that the blocking component 130 blocks the battery cell 20, thereby making the blocking component 130 highly sensitive.

[0059] It should be noted that the working principle of the sensing component 140 for sensing the position of the battery cell 20, the operating principle of the sensing component 140 for driving the blocking component 130 through the control circuit, and the control circuit between the sensing component 140 and the blocking component 130 are all existing technologies and will not be described in detail here.

[0060] like Figures 1 to 3 As shown, the OCV testing fixture 10 also includes a display component 700, which is connected to the platform frame 100. The OCV testing mechanism 300 and the barcode scanning mechanism 400 are both electrically connected to the display component 700. In this embodiment, both the OCV testing mechanism 300 and the barcode scanning mechanism 400 are electrically connected to the display component 700 so that the OCV test data and barcode of the battery cell 20 are uploaded to the display component 700 for viewing by staff, thus improving the ease of use of the OCV testing fixture 10.

[0061] Compared with the prior art, this disclosure has at least the following advantages:

[0062] 1. The platform frame 100 is equipped with a feeding assembly 110 for assisting in the conveying of the battery cell 20, allowing the operator to push the battery cell 20 from the feeding end of the feeding assembly 110 to the predetermined testing position, so that the battery cell 20 is positioned opposite the OCV testing mechanism 300 to achieve the feeding process of the battery cell 20; the connection position between the first test probe assembly 320 and the mounting plate assembly 310 is adjustable, thereby adjusting the connection position between the first test probe assembly 320 and the mounting plate assembly 310, so that the first test probe assembly 320 is positioned directly above the positive terminal of the battery cell 20; at the same time, the connection position between the second test probe assembly 330 and the mounting plate assembly 310 is adjustable, thereby adjusting the connection position between the second test probe assembly 330 and the mounting plate assembly 310. The connection position is such that the second test probe assembly 330 is positioned directly above the negative terminal of the battery cell 20; the drive mechanism 200 drives the mounting plate assembly 310 to move relative to the platform frame 100, so that the drive mechanism 200 drives the mounting plate assembly 310 to press down, so that both the first test probe assembly 320 and the second test probe assembly 330 press down with the mounting plate assembly 310, so that the first test probe assembly 320 contacts the positive terminal of the battery cell 20, so that the first test probe assembly 320 is used to connect to the positive terminal of the battery cell 20, and at the same time, the second test probe assembly 330 contacts the negative terminal of the battery cell 20, so that the second test probe assembly 330 is used to connect to the negative terminal of the battery cell 20, thereby completing the OCV test of the battery cell 20;

[0063] 2. Since the connection position of each test probe assembly to the mounting plate assembly 310 is adjustable, each test probe assembly is positioned directly opposite the corresponding terminal of the battery cell 20. Simultaneously, the drive mechanism 200 can adjust the downward pressure height of each test probe assembly via the mounting plate assembly 310. This allows the OCV testing mechanism 300 to be adjusted in position according to the external dimensions of different battery cell models 20. This positional adjustment allows the OCV testing mechanism 300 to be adapted to different battery cell models for OCV testing, facilitating the replacement of battery cell models. This avoids the problem in existing technologies where the control program and OCV testing fixture need to be adjusted according to different battery cell models 20. The OCV testing fixture 10 can meet the OCV testing requirements of different battery cell models 20 simply by adjusting the position of the OCV testing mechanism 300. Compared to traditional automatic OCV testing equipment, the OCV testing fixture 10 has a lower difficulty in replacing battery cell models 20, thus making it more convenient to use.

[0064] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An OCV testing fixture, characterized in that, include: The platform frame (100) is equipped with a feeding assembly (110) for auxiliary conveying of battery cells (20); A drive mechanism (200) is mounted on the platform frame (100); The OCV testing mechanism (300) includes a mounting plate assembly (310), a first test probe assembly (320), and a second test probe assembly (330). The power output end of the drive mechanism (200) is connected to the mounting plate assembly (310). The drive mechanism (200) is used to drive the mounting plate assembly (310) to move relative to the platform frame (100). The connection position between the first test probe assembly (320) and the mounting plate assembly (310) is adjustable, and the connection position between the second test probe assembly (330) and the mounting plate assembly (310) is adjustable. The first test probe assembly (320) is used to connect to the positive terminal of the battery cell (20), and the second test probe assembly (330) is used to connect to the negative terminal of the battery cell (20).

2. The OCV testing fixture according to claim 1, characterized in that, The first test probe assembly (320) includes a first probe holder (321) and a first test probe part (322) connected to each other; the first test probe part (322) is used to connect to the positive terminal of the battery cell (20); the first probe holder (321) is connected to the mounting plate assembly (310), the connection angle between the first probe holder (321) and the mounting plate assembly (310) is adjustable, the position where the first probe holder (321) is connected to the mounting plate assembly (310) is a first connection position, and the distance between the first connection position and the first test probe part (322) is adjustable.

3. The OCV testing fixture according to claim 2, characterized in that, The first probe holder (321) has a first connecting hole (3211), and the mounting plate assembly (310) has a second connecting hole. The first connecting hole (3211) communicates with the second connecting hole. At least one of the first connecting hole (3211) and the second connecting hole is a waist-shaped hole structure. The OCV testing mechanism (300) also includes a first adjusting fastener (500). The first adjusting fastener (500) passes through the first connecting hole (3211) and the second connecting hole. One end of the first adjusting fastener (500) abuts against the first probe holder (321), and the other end of the first adjusting fastener (500) is fastened to the mounting plate assembly (310), so that the first adjusting fastener (500) fixes the first probe holder (321) on the mounting plate assembly (310). The position where the first adjusting fastener (500) abuts against the first probe holder (321) is the first connecting position.

4. The OCV testing fixture according to claim 1, characterized in that, The second test probe assembly (330) includes a second probe holder (331) and a second test probe part (332) connected together; the second test probe part (332) is used to connect to the negative terminal of the battery cell (20); the second probe holder (331) is connected to the mounting plate assembly (310), the connection angle between the second probe holder (331) and the mounting plate assembly (310) is adjustable, the position where the second probe holder (331) is connected to the mounting plate assembly (310) is a second connection position, and the distance between the second connection position and the second test probe part (332) is adjustable.

5. The OCV testing fixture according to claim 4, characterized in that, The second probe holder (331) has a third connecting hole (3311), and the mounting plate assembly (310) has a fourth connecting hole. The third connecting hole (3311) communicates with the fourth connecting hole. At least one of the third connecting hole (3311) and the fourth connecting hole has a waist-shaped hole structure. The OCV testing mechanism (300) also includes a second adjusting fastener (600). The second adjusting fastener (600) passes through the third connecting hole (3311) and the fourth connecting hole. One end of the second adjusting fastener (600) abuts against the second probe holder (331), and the other end of the second adjusting fastener (600) is fastened to the mounting plate assembly (310), so that the second adjusting fastener (600) fixes the second probe holder (331) on the mounting plate assembly (310). The position where the second adjusting fastener (600) abuts against the second probe holder (331) is the second connecting position.

6. The OCV testing fixture according to claim 1, characterized in that, The platform frame (100) has a conveying channel (120), and the feeding assembly (110) is located in the conveying channel (120). The feeding assembly (110) includes a plurality of rotating conveying rollers (111), which are spaced apart. Each rotating conveying roller (111) is rotatably connected to the inner wall of the conveying channel (120), so that each rotating conveying roller (111) rotates relative to the platform frame (100) to assist in conveying the battery cell (20).

7. The OCV testing fixture according to claim 6, characterized in that, The number of the feeding assembly (110), the mounting plate assembly (310), the first test probe assembly (320), the second test probe assembly (330), and the conveying channel (120) are all two, and the two feeding assemblies (110), the two mounting plate assemblies (310), the two first test probe assemblies (320), the two second test probe assemblies (330), and the two conveying channels (120) are arranged in a one-to-one correspondence.

8. The OCV testing fixture according to claim 7, characterized in that, Two mounting plate assemblies (310) are arranged opposite each other and have a connecting sliding groove (311). The OCV test fixture (10) also includes a barcode scanning mechanism (400). The barcode scanning mechanism (400) includes a first barcode scanning component (410), a connecting movable part (420), and a second barcode scanning component (430). The connecting movable part (420) is connected to the first barcode scanning component (410) and the second barcode scanning component (430) respectively. The connecting movable part (420) is located between the first barcode scanning component (410) and the second barcode scanning component (430). The connecting movable part (420) is located in the connecting sliding groove (311). The connecting movable part (420) is slidably connected to each of the mounting plate assemblies (310).

9. The OCV testing fixture according to claim 1, characterized in that, The drive mechanism (200) includes a main body (210), a drive component (220), a fixed base (230), and a connecting component (240). The drive component (220) is mounted on the main body (210), and the main body (210) is connected to the fixed base (230). The connecting component (240) is slidably connected to the main body (210). The power output end of the drive component (220) is connected to the connecting component (240). The drive component (220) is used to drive the connecting component (240) to slide relative to the main body (210). The fixed base (230) is mounted on the platform frame (100), and the connecting component (240) is connected to the mounting plate assembly (310).

10. The OCV testing fixture according to claim 9, characterized in that, The main body (210) of the mechanism has a sliding cavity (211). The driving assembly (220) includes a driving motor (221) and a connecting screw (222). The connecting screw (222) is located in the sliding cavity (211) and rotatably connected to the main body (210). The driving motor (221) is installed in the main body (210). The power output end of the driving motor (221) is connected to the connecting screw (222). The driving motor (221) is used to drive the connecting screw (222) to rotate relative to the main body (210). The connecting assembly (240) is provided with a sliding part (241). The sliding part (241) has an internal thread hole (2411). The sliding cavity (211) communicates with the internal thread hole (2411). The connecting screw (222) passes through the internal thread hole (2411) and is screwed to the sliding part (241).

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