Lithium battery pack fault detection device

Abstract

The utility model provides a lithium battery pack fault detection device, which belongs to the field of battery pack fault detection and comprises a conveying mechanism, the conveying mechanism comprises a horizontally arranged conveying belt, and mounting side plates are vertically and fixedly mounted on two sides of the conveying belt; the positioning mechanism comprises inward pushing air cylinders symmetrically installed on the two sides of the installation side plate, supporting plates used for supporting the inward pushing air cylinders are installed at the bottoms of the inward pushing air cylinders, inward pushing blocks are installed at the front ends of the inward pushing air cylinders, and installation grooves allowing the inward pushing blocks to pass through are formed in the installation side plate. A photoelectric sensor is arranged on the mounting side plate in front of the mounting groove on one side; the inner push block comprises a roller section and a positioning section; according to the utility model, the conveying mechanism guides the battery pack, the photoelectric sensor triggers the positioning mechanism, the inner push cylinder and the positioning block ensure accurate positioning and damping, and finally the fault detection mechanism completes detection, so that the automation degree is improved, and the battery pack detection efficiency and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack fault detection, in particular to a lithium battery pack fault detection device. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. Lithium batteries have high energy density and a long service life. They have been widely used in various fields. Lithium battery packs are composed of one or more lithium battery cells combined into an integral battery pack through a specific process. In order to ensure the safety and performance of lithium battery packs during use, various indicators of lithium battery packs need to be tested before leaving the factory to avoid malfunctions.

[0003] The utility model patent with authorization announcement number CN220271409 U discloses a battery detection tooling, the core feature of which is that it can accurately position the electrodes of the battery pack by adjusting the distance between the conductive slots on the slide, assisted by the coordinated action of the telescopic rods on both sides of the conveyor belt, thereby realizing effective detection of the battery pack voltage. However, this design scheme also has limitations, especially in the calibration of the front and rear positions of the battery pack electrodes, and it is difficult to apply to automated production lines. Although there are structures for positioning in the prior art, which aim to solve the position problem of the battery pack during the transmission process, in actual applications, when the positioning structure is used to position the lithium battery pack on the conveyor belt, it will inevitably face the impact force from the lithium battery pack. In the long run, repeated impacts may cause the positioning structure to deform, and even reduce its positioning accuracy, thereby affecting the accuracy and efficiency of the overall detection process. Utility Model Content

[0004] The purpose of the present utility model is to provide a lithium battery pack fault detection device, which has the advantages of positioning the battery pack, increasing the impact load resistance of the positioning structure, and improving the degree of automated production, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The conveying mechanism comprises a horizontally arranged conveyor belt, with mounting side plates vertically fixedly mounted on both sides of the conveyor belt;

[0007] The positioning mechanism comprises an inner push cylinder symmetrically mounted on both sides of the mounting side plate, a support plate for supporting the inner push cylinder is mounted on the bottom of the inner push cylinder, an inner push block is mounted on the front end of the inner push cylinder, a mounting slot for the inner push block to pass through is provided on the mounting side plate, a photoelectric sensor is arranged on the mounting side plate in front of the mounting slot on one side, a fixed side plate is installed around the support plate, the support plate and the fixed side plate are both fixedly connected to the mounting slot, the inner push block comprises a roller section and a positioning section, the roller section is evenly provided with rollers, the positioning section is provided with a plurality of positioning slots, and a positioning block is movably mounted on the positioning slot;

[0008] A fault detection mechanism includes four slide rails vertically installed on the top of the mounting slot, a fixed plate is installed on the top of the slide rail, a downward pressure cylinder is fixedly installed below the fixed plate, a detection platform is connected to the front end of the downward pressure cylinder, and a matching groove for connecting the detection electrode is provided on the detection platform, and the detection electrode can slide left and right in the matching groove.

[0009] As a further improvement, the photoelectric sensor is electrically connected to the inner push cylinder.

[0010] As a further improvement, the four corners of the detection platform are fixedly connected with sliders, and the detection platform is slidably connected to the slide rails through the sliders.

[0011] As a further improvement, the detection electrode includes a detection rod and a matching slider, the tip of the detection rod is made of metal material, and the tip of the detection rod is electrically connected to the battery pack electrode during detection.

[0012] As a further improvement, a fixing hole and a connecting hole are respectively provided on the top and side of the mating slider, and the fixing holes are movably connected to the detection platform through bolts and butterfly nuts.

[0013] As a further improvement, the detection electrode is electrically connected to the external display platform through a connection hole.

[0014] The beneficial effects of the above technical solution of the utility model are as follows:

[0015] The present invention cooperates with the conveying mechanism, the positioning mechanism, and the fault detection mechanism. First, the conveying mechanism transports the lithium battery pack past the photoelectric sensor. The photoelectric sensor signal is transmitted to the positioning mechanism. At this time, the inner push cylinder drives the inner push block to accurately clamp the lithium battery pack, and cooperates with the positioning block to achieve stable positioning of the lithium battery pack. The inner push block slows down the lithium battery pack by clamping it, reducing the impact of the lithium battery pack on the positioning block during positioning and enhancing the durability of the structure. In short, the present invention guides the battery pack through the conveying mechanism, the photoelectric sensor triggers the positioning mechanism, the inner push cylinder and the positioning block ensure accurate positioning and shock absorption, and finally the fault detection mechanism completes the detection, thereby improving the degree of automation and enhancing the efficiency and accuracy of battery pack detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0017] Figure 1 This is a three-dimensional structural diagram of the lithium battery pack fault detection device of the utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the transportation mechanism of the utility model;

[0019] Figure 3 It is a top view of the positioning mechanism of the utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the detection electrode of the utility model.

[0021] Description of reference numerals:

[0022] 1. Conveying mechanism; 11. Conveyor belt; 12. Mounting side plate; 13. Mounting slot; 14. Photoelectric sensor; 2. Positioning mechanism; 21. Inward push cylinder; 22. Support plate; 23. Fixed side plate; 24. Inward push block; 25. Roller; 26. Positioning block; 27. Positioning slot; 3. Fault detection mechanism; 31. Slide rail; 32. Fixed plate; 33. Down-pressing cylinder; 34. Detection platform; 35. Detection electrode; 351. Detection rod; 352. Matching slider; 3521. Fixing hole; 3522. Connecting hole; 36. Matching slot; 37. Slider; 38. Butterfly nut. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] This utility model primarily relies on the coordinated operation of a conveying mechanism, a positioning mechanism, and a fault detection mechanism. First, the lithium battery pack is carried by the conveying mechanism. A photoelectric sensor triggers the positioning mechanism, and an inward-pushing cylinder randomly drives an inward-pushing block with a roller segment and a positioning segment to achieve precise clamping and deceleration. The rollers enable the lithium battery pack to move slowly and smoothly along the conveyor belt, even in the clamped state, until it contacts the positioning block and securely positions itself. A downward-pushing cylinder then drives the detection platform downward, ensuring that the detection rod accurately contacts the positive and negative terminals of the lithium battery, efficiently completing voltage measurements.

[0026] After introducing the basic principles of the present invention, various non-limiting embodiments of the present invention are described in detail below. The numbers of any elements in the drawings are for illustration only and not for limitation, and any names are for distinction only and do not have any limiting meaning.

[0027] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0028] Embodiment 1 of a lithium battery pack fault detection device provided by the present invention:

[0029] like Figure 1 As shown, the lithium battery pack fault detection device includes: a conveying mechanism 1, a positioning mechanism 2 and a fault detection mechanism 3.

[0030] like Figure 1 and Figure 3 As shown, the conveying mechanism 1 includes a horizontally arranged conveyor belt 11 , and mounting side plates 12 are vertically fixedly installed on both sides of the conveyor belt 11 .

[0031] like Figure 1 and Figure 3 As shown, the positioning mechanism 2 includes an inward pushing cylinder 21 symmetrically installed on both sides of the mounting side plate 12, a support plate 22 for supporting the inward pushing cylinder 21 is installed at the bottom of the inward pushing cylinder 21, and a fixed side plate 23 is installed around the support plate 22, and the support plate 22 and the fixed side plate 23 are both fixedly connected to the mounting groove 13, and an inward pushing block 24 is installed at the front end of the inward pushing cylinder 21, and a mounting groove 13 for the inward pushing block 24 to pass through is opened on the mounting side plate 12, and a photoelectric sensor 14 is fixedly installed on the mounting side plate 12 in front of the mounting groove 13 on one side, and the photoelectric sensor 14 is arranged close to the inward pushing block 24, and the photoelectric sensor 14 is electrically connected to the inward pushing cylinder 21. When the lithium battery pack enters the clamping range, the photoelectric sensor 14 recognizes and triggers the positioning mechanism 2, and at this time the inward pushing cylinder 21 drives the inward pushing block 24 to move to clamp the lithium battery pack.

[0032] like Figure 3As shown, the inner push block 24 includes a roller section and a positioning section. The roller section is evenly distributed with rollers 25. When the inner push block 24 clamps the lithium battery pack on the left and right, the moving speed of the lithium battery pack is greatly reduced, but it can still move smoothly with the conveyor belt 11; the positioning section is provided with a plurality of positioning grooves 27, and the positioning blocks 26 are inserted into the positioning grooves 27. By adjusting the position of the positioning blocks 26, lithium battery packs of different specifications can be positioned. When the lithium battery pack contacts the positioning blocks 26, it is positioned and the lithium battery pack stops moving, so that the lithium battery can be fault detected.

[0033] like Figure 1 and Figure 4 As shown, the fault detection mechanism 3 includes four slide rails 31 vertically installed on the top of the installation slot, a fixed plate 32 is installed on the top of the slide rail 31, and a downward pressure cylinder 33 is fixedly installed under the fixed plate 32. The front end of the downward pressure cylinder 33 is connected to a detection platform 34, and the four corners of the detection platform 34 are fixedly connected to sliders 37. The detection platform 34 is slidably connected to the slide rail 31 through the slider 37. During fault detection, the downward pressure cylinder 33 can push the detection platform 34 to move downward through the slide rail 31. A matching groove 36 for connecting the detection electrode 35 is provided on the detection platform 34, and the detection electrode 35 can slide in the matching groove 36. Before fault detection, the spacing of the detection electrodes 35 can be adjusted and positioned according to the specifications of the batch of lithium battery packs.

[0034] like Figure 1 and Figure 4 As shown, the detection electrode 35 includes a detection rod 351 and a matching slider 352. The tip of the detection rod 351 is made of metal. During detection, the tip of the detection rod 351 is electrically connected to the battery pack electrode. The top and side of the matching slider 352 are respectively provided with a fixing hole 3521 and a connection hole 3522. The fixing hole 3521 is movably connected to the detection platform 34 through a bolt and a butterfly nut 38. The detection electrode 35 is electrically connected to the external display platform through the connection hole 3522.

[0035] Embodiment 2 of a lithium battery pack fault detection device provided by the present invention:

[0036] The main difference between it and Example 1 is:

[0037] In this embodiment, the detection rod 351 at the bottom of the detection electrode is replaced with a conductive groove, which can be directly put on the electrode of the lithium battery pack, and the contact is relatively firm, avoiding disconnection between the detection electrode 35 and the lithium battery pack electrode during detection, resulting in inaccurate voltage measurement.

[0038] Embodiment 3 of a lithium battery pack fault detection device provided by the present invention:

[0039] The main difference between it and Example 1 is:

[0040] This embodiment does not use the connection hole 3522 to electrically connect with the external display platform. Instead, an electrical rail is directly set between the mating slider 352 and the mating slot 36. The detection electrode 35 is electrically connected to the external display platform through the electrical rail. This connection method does not require the setting of a wire, thereby avoiding deformation and blockage of the wire caused by the detection electrode 35 sliding in the mating slot 36.

[0041] Although this specification has shown and described a plurality of embodiments of the present invention, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will conceive of many modifications, changes, and alternatives without departing from the ideas and spirit of the present invention. It should be understood that in practicing the present invention, various alternatives to the embodiments of the present invention described herein may be adopted. The appended claims are intended to define the scope of protection of the present invention and therefore cover modular compositions, equivalents, or alternatives within the scope of protection of these claims.

Claims

1. A lithium battery pack fault detection device, characterized in that: include: A conveying mechanism (1), the conveying mechanism (1) comprising a horizontally arranged conveying belt (11), with mounting side plates (12) vertically fixedly mounted on both sides of the conveying belt (11); A positioning mechanism (2), wherein the positioning mechanism (2) comprises an inner push cylinder (21) symmetrically mounted on both sides of the mounting side plate (12), a support plate (22) for supporting the inner push cylinder (21) being mounted at the bottom of the inner push cylinder (21), an inner push block (24) being mounted at the front end of the inner push cylinder (21), a mounting groove (13) for the inner push block (24) to pass through being provided on the mounting side plate (12), a photoelectric sensor (14) being arranged on the mounting side plate (12) in front of the mounting groove (13) on one side, a fixed side plate (23) being mounted around the support plate (22), the support plate (22) and the fixed side plate (23) being fixedly connected to the mounting groove (13), the inner push block (24) comprising a roller section and a positioning section, the roller section being evenly provided with rollers (25), the positioning section being provided with a plurality of positioning grooves (27), and a positioning block (26) being movably mounted on the positioning groove (27); A fault detection mechanism (3) includes four slide rails (31) vertically mounted on the top of the mounting groove (13), a fixed plate (32) is mounted on the top of the slide rail (31), a downward pressure cylinder (33) is fixedly mounted below the fixed plate (32), a front end of the downward pressure cylinder (33) is connected to a detection platform (34), a matching groove (36) for connecting a detection electrode (35) is provided on the detection platform (34), and the detection electrode (35) can slide left and right in the matching groove (36).

2. The battery pack fault detection device according to claim 1, characterized in that: The photoelectric sensor (14) is electrically connected to the inner push cylinder (21).

3. The battery pack fault detection device according to claim 1, characterized in that: The four corners of the detection platform (34) are fixedly connected with sliders (37), and the detection platform (34) is slidably connected to the slide rail (31) through the sliders (37).

4. The battery pack fault detection device according to claim 1, characterized in that: The detection electrode (35) comprises a detection rod (351) and a matching slider (352). The tip of the detection rod (351) is made of metal material. During detection, the tip of the detection rod (351) is electrically connected to the battery pack electrode.

5. The battery pack fault detection device according to claim 4, characterized in that: A fixing hole (3521) and a connecting hole (3522) are respectively provided on the top and side of the matching slider (352), and the fixing hole (3521) is movably connected to the detection platform (34) via a bolt and a butterfly nut (38).

6. The battery pack fault detection device according to claim 4 or 5, characterized in that: The detection electrode (35) is electrically connected to the external display platform via the connection hole (3522).

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