Battery cell OCV detection mechanism

Abstract

The utility model discloses a battery cell OCV detection mechanism, which ingeniously combines a turntable mechanism and a battery cell OCV detection device, and realizes automatic fixation and efficient detection of a battery cell. The turntable mechanism is responsible for stably fixing the battery, and the cell OCV detection device realizes accurate detection of the cell through structures such as the mounting rack, the Z transverse movement driving module, the probe mounting seat, the positive and negative electrode probe assembly and the like. Wherein the Z transverse movement driving module can accurately control the lifting motion of the probes, and ensures that the positive and negative probes are accurately contacted with the battery cell, so that the accuracy and reliability of detection are greatly improved. The detection mechanism is stable in structure, components are tightly matched, and the detection mechanism can continuously work for a long time and keep stable detection performance. In addition, manual intervention is greatly reduced through the automatic detection process, the influence of human factors on the detection result is reduced, and the detection result is more objective and accurate.

Description

Technical Field

[0001] This application relates to the field of battery cell testing, and in particular to a battery cell OCV testing mechanism. Background Technology

[0002] In the field of battery production and testing, the open circuit voltage (OCV) of a battery cell is one of the important indicators for evaluating cell performance. Accurate and efficient testing of the OCV of a battery cell is crucial for ensuring the quality and consistency of battery products.

[0003] Traditional OCV testing methods for battery cells often employ manual operation or simple mechanical devices, which have several shortcomings. For example, manual operation is not only inefficient but also prone to errors due to human factors; while simple mechanical devices may be limited by their structure, making it impossible to achieve precise control of probe lifting and lowering, thus affecting the accuracy and stability of the test. Utility Model Content

[0004] The purpose of this application is to provide a mechanism that can automatically and accurately perform OCV testing of battery cells, so as to improve testing efficiency and accuracy, while reducing the impact of human factors on the testing results.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A battery cell OCV testing mechanism includes a turntable mechanism and a battery cell OCV testing device. The battery cell OCV testing device is disposed on one side of the turntable mechanism, which is used to fix the battery. The battery cell OCV testing device includes a mounting frame, a Z-axis lateral movement drive module, a probe mounting base, a positive electrode probe assembly, and a negative electrode probe assembly. The positive electrode probe assembly and the negative electrode probe assembly are both mounted on the probe mounting base. The probe mounting base is mounted on the Z-axis lateral movement drive module, which is mounted on the mounting frame. The Z-axis lateral movement drive module is used to drive the probe mounting base to move the positive electrode probe assembly and the negative electrode probe assembly up and down.

[0007] In one embodiment, the positive electrode probe assembly includes a positive electrode mounting base plate, a positive electrode mounting panel, a first positive electrode probe, and a second positive electrode probe. The first positive electrode probe and the second positive electrode probe are disposed between the positive electrode mounting base plate and the positive electrode mounting panel, and the positive electrode mounting panel fixes the first positive electrode probe and the second positive electrode probe to the positive electrode mounting base plate.

[0008] In one embodiment, the negative electrode probe assembly includes a negative electrode mounting base plate, a negative electrode mounting panel, a first negative electrode probe, and a second negative electrode probe. The first negative electrode probe and the second negative electrode probe are disposed between the negative electrode mounting base plate and the negative electrode mounting panel, and the negative electrode mounting panel fixes the first negative electrode probe and the second negative electrode probe to the negative electrode mounting base plate.

[0009] In one embodiment, the probe mounting base is provided with a guide groove, and the bottom surfaces of the positive electrode mounting base plate and the negative electrode mounting base plate are respectively provided with guide protrusions. The guide protrusions cooperate with the guide groove, and the positive electrode mounting base plate and the negative electrode mounting base plate can move along the guide groove through the guide protrusions.

[0010] In one embodiment, the bottom of the first negative electrode probe and the second negative electrode probe are provided with multiple needle tips.

[0011] The beneficial effects of this application are as follows:

[0012] This application achieves automated cell fixing and testing through the cooperation of a turntable mechanism and a cell OCV testing device, significantly improving testing efficiency and reducing the time required for manual operation. The Z-axis lateral drive module in the cell OCV testing device precisely controls the lifting and lowering movement of the probe mounting base, thereby ensuring that the positive and negative probe assemblies accurately contact the positive and negative electrodes of the cell, guaranteeing testing accuracy. This precise control effectively avoids testing errors caused by human factors or structural limitations of simple mechanical devices. The cell OCV testing mechanism of this application has a stable structure and tight cooperation between its components, maintaining stable testing performance during long-term continuous operation, further improving the reliability and consistency of testing. Because this application automates cell OCV testing, it greatly reduces manual intervention, thereby minimizing the impact of human factors on the testing results and making the results more objective and accurate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an OCV detection mechanism provided in one embodiment of this application;

[0014] Figure 2 This is a schematic diagram of the structure of a positive electrode probe assembly and a negative electrode probe assembly provided in an embodiment of this application; Detailed Implementation

[0015] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0016] like Figure 1As shown, the OCV testing mechanism 6 includes a turntable mechanism and a cell OCV testing device. The cell OCV testing device is located on one side of the turntable mechanism, which is used to fix the battery. The cell OCV testing device includes a mounting frame 61, a Z-axis lateral movement drive module 62, a probe mounting base 63, a positive electrode probe assembly 64, and a negative electrode probe assembly 65. Both the positive electrode probe assembly 64 and the negative electrode probe assembly 65 are mounted on the probe mounting base 63. The probe mounting base 63 is mounted on the Z-axis lateral movement drive module 62, which is mounted on the mounting frame 61. The Z-axis lateral movement drive module 62 drives the probe mounting base 63 to move the positive electrode probe assembly 64 and the negative electrode probe assembly 65 up and down.

[0017] like Figure 2 As shown, in one embodiment, the positive electrode probe assembly 64 includes a positive electrode mounting base plate 641, a positive electrode mounting panel 642, a first positive electrode probe 643, and a second positive electrode probe 644. The first positive electrode probe 643 and the second positive electrode probe 644 are disposed between the positive electrode mounting base plate 641 and the positive electrode mounting panel 642. The positive electrode mounting panel 642 fixes the first positive electrode probe 643 and the second positive electrode probe 644 on the positive electrode mounting base plate 641. The negative electrode probe assembly 65 includes a negative electrode mounting base plate 651, a negative electrode mounting panel 652, a first negative electrode probe 653, and a second negative electrode probe 654. The first negative electrode probe 653 and the second negative electrode probe 654 are disposed between the negative electrode mounting base plate 651 and the negative electrode mounting panel 652. The negative electrode mounting panel 652 fixes the first negative electrode probe 653 and the second negative electrode probe 654 on the negative electrode mounting base plate 651. The arrangement of the first positive probe 643 and the second positive probe 644, as well as the first negative probe 653 and the second negative probe 654, allows for the simultaneous connection and testing of multiple test points, thereby improving testing efficiency.

[0018] like Figure 1 As shown, the probe mounting base 63 is provided with a guide groove 631, and the bottom surfaces of the positive electrode mounting base plate 641 and the negative electrode mounting base plate 651 are respectively provided with guide protrusions 632. The guide protrusions 632 cooperate with the guide groove 631, allowing the positive electrode mounting base plate 641 and the negative electrode mounting base plate 651 to move along the guide groove 631 via the guide protrusions 632. The guide groove 631 on the probe mounting base 63 cooperates with the guide protrusions 632 on the bottom surfaces of the positive electrode mounting base plate 641 and the negative electrode mounting base plate 651, enabling the positive electrode mounting base plate 641 and the negative electrode mounting base plate 651 to move smoothly along the guide groove 631. This design not only improves the adjustability of the probe assembly but also ensures the stability and accuracy of the probe during movement.

[0019] like Figure 1As shown, the bottom of the first negative electrode probe 653 and the second negative electrode probe 654 are provided with multiple needle tips 66. This design increases the contact area between the probe and the test point, improving the accuracy and stability of the test. Simultaneously, the multiple needle tips 66 can also compensate to some extent for the decrease in test accuracy caused by probe wear.

[0020] like Figure 2 As shown, the turntable mechanism 4 has four battery cell fixing assemblies 41 on its four sides. Each battery cell fixing assembly includes four battery cell holders 41, each holding one battery cell. The turntable mechanism 4 can be an automated turntable: equipped with sensors, a drive motor 1123a, and a control system, it can achieve precise rotation control and positioning. Automated turntables are typically integrated with the battery cell fixing assemblies 41 to achieve automated processing of battery cells.

[0021] The battery cell fixing device 41 can be a suction cup device.

[0022] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0023] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0024] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “may include” and “have,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cell OCV testing mechanism, characterized in that: The application relates to a battery OCV detection device, which comprises a rotating disc mechanism and a battery OCV detection device, the battery OCV detection device is arranged on one side of the rotating disc mechanism, the rotating disc mechanism is used for fixing a battery, the battery OCV detection device comprises a mounting frame, a Z horizontal movement driving module, a probe mounting base, a positive probe assembly and a negative probe assembly, the positive probe assembly and the negative probe assembly are both mounted on the probe mounting base, the probe mounting base is mounted on the Z horizontal movement driving module, the Z horizontal movement driving module is mounted on the mounting frame, and the Z horizontal movement driving module is used for driving the probe mounting base to drive the positive probe assembly and the negative probe assembly to make lifting movement.

2. The mechanism for detecting OCV of a battery cell according to claim 1, characterized in that: The positive probe assembly comprises a positive mounting bottom plate, a positive mounting face plate, a first positive probe and a second positive probe, the first positive probe and the second positive probe are arranged between the positive mounting bottom plate and the positive mounting face plate, and the positive mounting face plate fixes the first positive probe and the second positive probe on the positive mounting bottom plate.

3. The mechanism for detecting OCV of a battery cell according to claim 2, characterized in that: The negative probe assembly comprises a negative mounting bottom plate, a negative mounting face plate, a first negative probe and a second negative probe, the first negative probe and the second negative probe are arranged between the negative mounting bottom plate and the negative mounting face plate, and the negative mounting face plate fixes the first negative probe and the second negative probe on the negative mounting bottom plate.

4. The mechanism for detecting OCV of a battery cell according to claim 3, characterized in that: A guide groove is arranged on the probe mounting base, guide convex strips are arranged on the bottom surfaces of the positive mounting bottom plate and the negative mounting bottom plate respectively, the guide convex strips are matched with the guide groove, and the positive mounting bottom plate and the negative mounting bottom plate can move along the guide groove through the guide convex strips.

5. The mechanism for detecting OCV of a battery cell according to claim 3, characterized in that: A plurality of needle tip portions are arranged on the bottom of the first negative probe and the second negative probe.

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