A detection fixture for detecting the size of an end plate

Abstract

The utility model belongs to the detection gauge field relates to a kind of detection gauge of end plate size, it includes: bottom plate, the middle part of bottom plate is equipped with stop gauge, the side of stop gauge is formed with first recess, the other side of stop gauge is formed with second recess, the size of first recess is greater than the size of second recess;First push unit and second push unit are installed on the bottom plate, and the first push unit is located in the side of first recess;The second push unit is located in the side of second recess.After the structure described above, its beneficial effect is: realizing station instant detection and process mistake proofing control, effectively prevent size abnormality from flowing into next process, guarantee module assembly precision and yield.

Description

Technical Field

[0001] This utility model belongs to the field of inspection and gauge technology, specifically, it relates to an inspection and gauge for end plate dimensions. Background Technology

[0002] In the structural system of power batteries and energy storage battery modules, the end plate is a key mechanical support and protection component. Its structural precision is directly related to the safety, sealing and stress uniformity of the module assembly.

[0003] End plates are typically located at both ends of the battery module. They apply constraint forces to the cell assembly through bolts, tie rods, or pre-tightening structures to prevent displacement or deformation of the cells due to volume expansion during charge and discharge cycles, thereby ensuring the stability and safety of the entire battery pack.

[0004] Currently, power and energy storage battery modules commonly use aluminum alloy materials (such as A380, ADC12, etc.) to manufacture end plates through die casting. This process has the advantages of high forming precision, high production efficiency, and good material utilization, but it also has certain drawbacks: During the die casting process, due to factors such as metal fluidity, mold venting, temperature, and pouring speed, burrs, flash, and slag often appear on the surface of the end plate blank. These residues can affect subsequent surface treatment, dimensional accuracy, and assembly performance.

[0005] To ensure the appearance and dimensional accuracy of the end plates, manual or mechanical grinding processes are typically used in production to remove excess burrs and flash from the end plate blanks. However, this process presents the following significant problems: 1. Critical dimensions are easily damaged: The end plate in the width direction (especially on both sides of the cell pressing surface) is usually the assembly reference dimension of the module. If the grinding is uneven or the force is too large, it is very easy to cause the dimension to be thinned, resulting in abnormal module assembly gap or insufficient bolt preload. 2. Manual inspection is slow and has large errors: At present, most factories still rely on manual sampling methods such as vernier calipers and feeler gauges to inspect the dimensions of end plates. This is not only inefficient and highly dependent on operation, but also has insufficient inspection frequency. Often, when the dimensional deviation is found, the entire batch has already been scrapped or reworked. 3. Lack of online monitoring mechanism: Existing detection methods are mostly post-production sampling inspections, lacking real-time monitoring and process control during production, making it difficult to detect deviations in the polishing process in a timely manner; 4. Inability to achieve automated production matching: Traditional inspection methods cannot be automatically connected with grinding stations, assembly lines or measurement systems, which restricts the level of automation and intelligence of the production line.

[0006] Therefore, in the existing technology, how to design a detection device that can quickly and accurately determine whether the key dimensions of the end plate are within the allowable tolerance range after the end plate grinding process has become a technical problem that urgently needs to be solved in the industry. Utility Model Content

[0007] To address the aforementioned problems in the prior art, this utility model provides a gauge for detecting end plate dimensions.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: As one aspect of this utility model, a gauge for detecting end plate dimensions is proposed, comprising: a base plate, wherein a go-no-go gauge is installed in the middle of the base plate. A first groove is formed on one side of the no-go gauge, and a second groove is formed on the other side of the no-go gauge. The size of the first groove is larger than the size of the second groove. A first pushing unit and a second pushing unit are mounted on the base plate. The first pushing unit is located on one side of the first groove, and the second pushing unit is located on one side of the second groove. The structure of the second pushing unit is symmetrical to that of the first pushing unit; the first pushing unit includes a fixed block mounted on the base plate, and a guide rod is movably mounted on the inner side of the fixed block; a spring is sleeved on the guide rod, and a push plate is mounted on one end of the guide rod, with the spring located between the fixed block and the push plate.

[0009] Furthermore, a fixing pin is installed on the base plate, and a positioning hole is provided on the go gauge to cooperate with the fixing pin.

[0010] Furthermore, the first groove has a first mark on its side, and the second groove has a second mark on its side.

[0011] Furthermore, it also includes limiting units, with limiting units respectively provided between the first pushing unit and the first groove, and between the second pushing unit and the second groove.

[0012] Furthermore, the limiting unit includes two limiting blocks spaced apart, the interval between the two limiting blocks being adapted to the width of the end plate.

[0013] The advantages of this utility model's end plate size detection fixture are specifically reflected in: enabling rapid "stop-pass" determination of key end plate dimensions, that is, preventing insertion or passage when the end plate size is out of tolerance, realizing real-time detection at the workstation and process error prevention control, effectively preventing dimensional abnormalities from flowing into the next process, and ensuring module assembly accuracy and yield. Attached Figure Description

[0014] The accompanying drawings of the specification, which form a part of the present application, are used to provide further understanding of the present utility model. The illustrative embodiments of the present utility model and the descriptions thereof are used to explain the present utility model, and do not constitute an improper limitation of the present utility model.

[0015] Figure 1 is a schematic structural view of the inspection gauge for end plate dimensions of the present utility model; Figure 2 is a reference view of the inspection gauge for end plate dimensions of the present utility model in a use state. Detailed Description of the Embodiments

[0016] To make the purpose, technical solution and advantages of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below with reference to the specific embodiments of the present utility model and the corresponding accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0017] An inspection gauge for end plate dimensions according to an embodiment of the present application, as shown in Figures 1-2 comprises: a base plate 1, which plays a supporting role; A go-no go gauge 2 is installed in the middle of the base plate 1, fixing pins 3 are installed on the base plate 1, positioning holes 21 matched with the fixing pins 3 are formed in the go-no go gauge 2, and the go-no go gauge 2 is installed on the base plate 1 through the matching of the positioning holes 21 and the fixing pins 3; A first groove 22 is formed on one side of the go-no go gauge 2, a second groove 23 is formed on the other side of the go-no go gauge 2, and the size of the first groove 22 is larger than that of the second groove 23, so that the end of the end plate 4 can enter the first groove 22, while the end of the end plate 4 cannot enter the second groove 23; a first mark 24 is arranged on the side edge of the first groove 22, a second mark 25 is arranged on the side edge of the second groove 23, the first mark 24 is a "go" character, and the second mark 25 is a "no go" character; A first pushing unit 5 and a second pushing unit 6 are installed on the base plate 1, the first pushing unit 5 is located on one side of the first groove 22; the second pushing unit 6 is located on one side of the second groove 23; the first pushing unit 5 pushes one end of the end plate 4 to cooperate with the first groove 22, and the second pushing unit 6 pushes one end of the end plate 4 to cooperate with the second groove 23.

[0018] Specifically, as shown in Figure 1As shown, the structure of the second pushing unit 6 is symmetrical to that of the first pushing unit 5; the first pushing unit 5 includes a fixing block 51 mounted on the base plate 1, and a guide rod 52 is movably mounted on the inner side of the fixing block 51. There are two guide rods 52, which are spaced apart; a spring 53 is sleeved on the guide rod 52, and a push plate 54 is mounted on one end of the guide rod 52. The spring 53 is located between the fixing block 51 and the push plate 54; the push plate 54 moves towards the first groove 22 under the action of the spring 53; the guide rod 52 serves as a guide for the push plate 54.

[0019] Furthermore, such as Figure 1 As shown, it also includes a limiting unit 7. A limiting unit 7 is provided between the first pushing unit 5 and the first groove 22, and between the second pushing unit 6 and the second groove 23, for limiting the end plate 4. The limiting unit 7 includes two limiting blocks 71 spaced apart, and the interval between the two limiting blocks 71 is adapted to the width of the end plate 4.

[0020] When in use, place the width control dimension of the end plate into the limiting unit. The push plate of the first pushing unit moves forward under the action of the spring, pushing the end plate to smoothly enter the first groove of the no-go gauge. Then place the end plate into the second groove. If the end plate cannot enter the second groove, the dimension is judged to be qualified; otherwise, it is defective.

[0021] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A gauge for detecting end plate dimensions, characterized in that, It includes: A bottom plate (1) is provided, and a go gauge (2) is installed in the middle of the bottom plate (1). The no-go gauge (2) has a first groove (22) formed on one side and a second groove (23) formed on the other side. The size of the first groove (22) is larger than the size of the second groove (23). A first pushing unit (5) and a second pushing unit (6) are installed on the base plate (1). The first pushing unit (5) is located on one side of the first groove (22); the second pushing unit (6) is located on one side of the second groove (23). The structure of the second pushing unit (6) is symmetrical to that of the first pushing unit (5); the first pushing unit (5) includes a fixed block (51) mounted on the base plate (1), and a guide rod (52) is movably mounted on the inner side of the fixed block (51); a spring (53) is sleeved on the guide rod (52), and a push plate (54) is mounted on one end of the guide rod (52), with the spring (53) located between the fixed block (51) and the push plate (54).

2. The end plate dimension inspection fixture as described in claim 1, characterized in that, A fixing pin (3) is installed on the base plate (1), and a positioning hole (21) is provided on the go gauge (2) to cooperate with the fixing pin (3).

3. The end plate dimension inspection fixture as described in claim 1, characterized in that, The first groove (22) has a first mark (24) on its side, and the second groove (23) has a second mark (25) on its side.

4. The end plate dimension inspection fixture as described in claim 1, characterized in that, It also includes a limiting unit (7), and a limiting unit (7) is provided between the first pushing unit (5) and the first groove (22) and between the second pushing unit (6) and the second groove (23).

5. The end plate dimension inspection fixture as described in claim 4, characterized in that, The limiting unit (7) includes two limiting blocks (71) spaced apart, and the gap between the two limiting blocks (71) is adapted to the width of the end plate (4).

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