Test fixture and automatic code scanning test system

Abstract

The utility model relates to the technical field of battery testing, and discloses a test fixture and an automatic code scanning test system. The test fixture comprises a positioning base and a driving member. The driving piece drives a test needle plate, and the test needle plate is located above the positioning base; pINs are arranged on the test needle plate. When the PCB to be tested is correctly placed in the PCB positioning groove, the plurality of PINs are just aligned with a plurality of preset test point positions on the PCB one by one; and the groove bottom of the PCB positioning groove is provided with an inductive switch. Whether the PCB to be tested is correctly placed or not is judged through the inductive switch, the dislocation fool-proof function is achieved, the electromagnetic valve is controlled to be switched on or switched off through the control panel, then the driving piece is controlled to drive the testing needle plate to make electrical contact with the PCB, automatic testing of electrical performance parameters of the PCB is achieved, and the automatic testing efficiency is improved through the automatic process. And the requirement of manual operation is reduced, so that the risk of human errors is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery test technical field especially relates to a test fixture and automatic code scanning test system. BACKGROUND

[0002] With the rapid development of new energy industry, the test requirement of battery and protection board is higher and higher. The traditional manual code scanning test and single machine test can not meet the demand of traceability, foolproofness and defective product control of test result for modern production. These traditional methods have the following main problems:

[0003] (1) human error: manual operation is easy to cause misjudgment, influence product quality and customer satisfaction;

[0004] (2) data management: test data is difficult to update and trace in real time, leading to information opacity.

[0005] (3) difficulty in quality control: lack of effective automation means to ensure the consistency and reliability of the test process.

[0006] Therefore, for those skilled in the art, how to replace the traditional manual code scanning test means by automation means, promote the technological progress and industrial upgrading of the industry, improve the test efficiency and accuracy and realize the consistency and reliability of the test process, become the technical problem to be solved in the field.

[0007] The above information is given as background information only to assist with understanding the present disclosure, and does not establish or acknowledge that any of the above is available as prior art to the present disclosure. UTILITY MODEL CONTENT

[0008] The utility model aims at providing a test fixture and automatic code scanning test system to solve or at least partially solve the technical problems existing in the prior art.

[0009] To achieve this purpose, the utility model adopts the following technical scheme:

[0010] In the first aspect, the utility model provides a test fixture, including positioning base and drive piece, the drive piece drives test needle plate, the test needle plate is located above the positioning base,

[0011] The top of the positioning base is provided with the PCB positioning groove matched with the shape of the PCB to be tested, and the predetermined mounting positions on the test needle plate are respectively provided with the PIN needle electrically connected with the electrical performance parameter test equipment for testing the electrical performance parameters of the PCB, when the PCB to be tested is correctly placed in the PCB positioning groove, the PIN needle is just aligned with the predetermined test point of the PCB one by one.

[0012] The bottom of the PCB positioning groove is provided with an induction switch for detecting whether the PCB to be tested is placed correctly, the induction switch is electrically connected with a control panel, and the control panel is electrically connected with a solenoid valve for controlling the driving member; when the PCB to be tested is placed correctly in the PCB positioning groove, the control panel controls the solenoid valve to be closed or turned on.

[0013] Optionally, the test fixture further comprises a test table, and the positioning base is mounted on the top of the test table.

[0014] An automatic code scanning gun is further mounted on the test table and electrically connected with the control panel; when the PCB to be tested is placed correctly in the PCB positioning groove, the automatic code scanning gun is just aligned with the two-dimensional code on the PCB to be tested.

[0015] Optionally, a support frame is fixedly connected to the test table, and the support frame comprises two vertical plates fixedly connected to the test table at intervals and a mounting plate fixedly connected to the two vertical plates at two ends.

[0016] The driving member is fixedly connected to the mounting plate, and a pressing block is connected to the driving end of the driving member, and the pressing block is fixedly connected to the top of the test needle plate.

[0017] Optionally, the driving member is arranged on the front side of the mounting plate, and two vertical guide rods are fixedly connected to the rear side of the mounting plate, and the bottom ends of the guide rods are fixedly connected to the top of the test table.

[0018] A guide hole is formed through the test needle plate at a position corresponding to each guide rod, and the test needle plate is slidably sleeved on the guide rod through the guide hole.

[0019] Optionally, a protective baffle is further arranged above the plurality of PIN needles, and the protective baffle is fixedly connected to the top of the test needle plate through a plurality of connecting columns.

[0020] Optionally, a code scanning gun mounting assembly is further fixedly arranged on the test table.

[0021] The code scanning gun mounting assembly comprises a position adjusting member for adjusting the position form of the automatic code scanning gun, one end of a vertical rod and one end of a horizontal rod are slidably and limitingly inserted into the position adjusting member, the other end of the vertical rod is fixedly connected to the test table, and the other end of the horizontal rod is fixedly connected to the automatic code scanning gun.

[0022] Optionally, the driving member is a pneumatic cylinder.

[0023] When the electromagnetic valve is closed or turned on, the cylinder is started and can drive the test needle plate to move downward by a predetermined height, so that the plurality of PIN needles are in electrical contact with the predetermined plurality of test points on the PCB respectively.

[0024] Optionally, the inductive switch is a travel switch.

[0025] Optionally, the control board and the electromagnetic valve are arranged in the inner cavity of the test bench.

[0026] In a second aspect, the utility model provides a kind of automatic code scanning test system, including a kind of test fixture as described above, host computer and the PIN needle for electrically connecting the test fixture to test the electrical performance parameter of PCB is electrically connected with the electrical performance parameter test equipment;

[0027] The host computer is connected with the electrical performance parameter test equipment and the control board of the test fixture.

[0028] Compared with prior art, the utility model has the following beneficial effects:

[0029] The test fixture provided by the utility model judges whether the PCB to be tested is placed correctly by inductive switch, realizes misplacement foolproof function, controls the closure or conduction of electromagnetic valve by control board, and then controls driving member to drive test needle plate and PCB to be in electrical contact, to realize the automatic test of the electrical performance parameter of PCB, reduces the demand of manual operation by automatic process, to reduce the risk of human error.

[0030] The utility model has other characteristics and advantages, which will be obvious from the drawings incorporated herein and the subsequent specific embodiments, or will be described in detail in the drawings incorporated herein and the subsequent specific embodiments, which are used together to explain the specific principles of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0032] Figure 1 It is the structure schematic view of the test fixture when placing PCB provided by the utility model embodiment.

[0033] Figure 2 It is the structure schematic view of the test fixture provided by the utility model embodiment.

[0034] Figure 3 is a structural schematic diagram of the inside of a test table of a test fixture.

[0035] In the figure: 10, test table; 100, PCB to be tested; 110, two-dimensional code; 11, control panel; 12, electromagnetic valve; 20, positioning base; 21, unloading notch; 22, PCB positioning groove; 221, induction switch; 30, test needle plate; 31, protective baffle; 32, PIN; 40, support frame; 401, vertical plate; 402, mounting plate; 41, guide rod; 50, code scanning gun mounting assembly; 51, vertical rod; 52, position adjusting piece; 53, cross rod; 60, automatic code scanning gun; 70, driving piece; 71, pressing block. DETAILED DESCRIPTION

[0036] To explain the possible application scenarios, technical principles, specific implementation schemes, and the purposes and effects that can be achieved of the present application in detail, the specific embodiments listed below are combined with the drawings for detailed description. The embodiments described in this paper are only used to more clearly illustrate the technical solutions of the present application, and therefore cannot limit the protection scope of the present application.

[0037] In this paper, the term "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various places in the specification does not necessarily refer to the same embodiment, and does not particularly limit its independence or association with other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0038] Unless otherwise defined, the meaning of the technical terms used in this paper is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms in this paper is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0039] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this paper generally represents that the associated objects before and after are a "or" logical relationship.

[0040] In this application, such as "first" and "second", the terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0041] In the present application, the terms "comprise", "contain", "have" or other similar terms used in the description are intended to cover non-exclusive inclusion, and the terms do not exclude the presence of additional elements in the process, method or product comprising the elements, so that the process, method or product comprising a series of elements can not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0042] As the same understanding as in the "Guidelines for Examination", in the present application, the terms "greater than", "less than", "exceed" and the like are understood as not including the number; the terms "above", "below", "within" and the like are understood as including the number. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), and similar terms related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly specified.

[0043] In the description of the embodiments of the present application, the spatial-related terms used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings, and are only for the convenience of describing the specific embodiments of the present application or for the reader to understand, and do not indicate or imply that the indicated device or component must have a particular position, a particular orientation, or be constructed or operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0044] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set", and the like should be understood in a broad sense. For example, the "connection" can be a fixed connection, or a detachable connection, or an integral setting; it can be a mechanical connection, or an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0045] Embodiment one:

[0046] Please refer to Figure 1 and Figure 2 , Figure 1A structure schematic view of the test fixture when the PCB is placed is provided by the embodiment of the utility model, Figure 2 A structure schematic view of the test fixture is provided by the embodiment of the utility model,

[0047] As Figure 1 Indicated, the test fixture includes positioning base 20 and drive piece 70, drive piece 70 is driven with test needle plate 30, and test needle plate 30 is located above positioning base 20,

[0048] As Figure 2 Indicated, the top of positioning base 20 is equipped with the PCB positioning groove 22 matched with the shape of the PCB (Printed Circuit Board, printed circuit board) to be tested, and the PCB 100 to be tested is battery protection board in the embodiment of example,

[0049] Specifically, a plurality of predetermined mounting positions on test needle plate 30 are respectively equipped with PIN needle 32 electrically connected with the electrical performance parameter testing device (not shown in the figure), when the PCB 100 to be tested is correctly placed in the PCB positioning groove 22, a plurality of PIN needles 32 are just aligned with a plurality of predetermined test point positions on the PCB, wherein the electrical performance parameter testing device is used to test the related electrical performance parameters of the PCB, such as voltage, current, internal resistance, etc.

[0050] Please continue to refer to Figure 3 , Figure 3 A structure schematic view inside the test table of the test fixture is provided by the embodiment of the utility model,

[0051] The groove bottom of PCB positioning groove 22 is further provided with inductive switch 221 for detecting whether the PCB 100 to be tested is correctly placed, and inductive switch 221 is electrically connected with control panel 11, and control panel 11 is electrically connected with electromagnetic valve 12 for controlling drive piece 70, when the PCB 100 to be tested is correctly placed in the PCB positioning groove 22, control panel 11 controls electromagnetic valve 12 to close or conduct.

[0052] Because the shape of PCB positioning groove 22 is matched with the shape of the PCB 100 to be tested, in the embodiment, only when the PCB 100 to be tested is completely placed in the PCB positioning groove 22 (as Figure 1 Indicated), the PCB can completely press inductive switch 221, that is, trigger the closure or conduction of inductive switch 221, therefore, the embodiment can judge whether the PCB 100 to be tested is correctly placed through inductive switch 221, realize the misplacement foolproof function,

[0053] After the inductive switch 221 is triggered, the control panel 11 can know that the PCB 100 to be tested has been placed correctly. At this time, the control panel controls the closure or conduction of the electromagnetic valve 12 (or controls the closure or conduction of the electromagnetic valve 12 after a predetermined waiting time), thereby controlling the driving member 70 to start working. The driving member 70 drives the test needle plate to move downward by a predetermined distance, so that the PIN needles 32 on the test needle plate 30 are in electrical contact with the predetermined test points on the PCB one by one. At this time, the electrical performance parameter testing equipment can test the electrical performance parameters of the PCB. The entire testing process does not require manual operation or intervention, realizes the automatic process of testing, and reduces the risk of human error.

[0054] Further, the test fixture is provided with a test table 10, and the positioning base 20 is installed on the top of the test table 10.

[0055] The test table 10 is also provided with an automatic code scanning gun 60, and the automatic code scanning gun 60 is electrically connected to the control panel 11. When the PCB 100 to be tested is correctly placed in the PCB positioning groove 22, the automatic code scanning gun 60 is aligned with the two-dimensional code 110 on the PCB 100 to be tested.

[0056] The automatic code scanning gun 60 is used to automatically identify and read the bar code information on the protection plate. The bar code information can be transmitted to the upper computer for processing and storage, thereby associating the test data of the PCB with the PCB itself, so as to facilitate the query and traceability of the test data.

[0057] Specifically, the test table 10 is fixedly connected with a support frame 40, and the support frame 40 includes two vertical plates 401 fixedly and spacedly connected to the test table 10, and a mounting plate 402 fixedly connected to the two vertical plates 401 at two ends.

[0058] The driving member 70 is fixedly connected to the mounting plate 402, and the driving end of the driving member 70 is connected with a pressing block 71 fixedly connected with the top of the test needle plate 30.

[0059] When the driving member 70 starts working, the driving end thereof extends downward by a predetermined length, thereby driving the pressing block 71 to move downward to a predetermined height position, and the test needle plate 30 moves downward together with the pressing block 71, thereby making the PIN needles 32 contact the corresponding test points on the PCB.

[0060] Specifically, the driving member 70 is arranged on the front side of the mounting plate 402, and the rear side of the mounting plate 402 is also fixedly connected with two vertically arranged guide rods 41, and the bottom ends of the guide rods 41 are fixedly connected with the top of the test table 10.

[0061] The test needle plate 30 is provided with a guide hole corresponding to each guide rod 41, and the test needle plate 30 is slidably sleeved on the guide rod 41 through the guide hole.

[0062] In this embodiment, two vertically arranged guide rods 41 are used to guide the longitudinal movement of the test needle plate 30, which further ensures the stability of the test needle plate 30 during the downward movement process.

[0063] Specifically, a protective baffle 31 is provided above several PIN pins 32, and the protective baffle 31 is fixedly connected to the top of the test pin plate 30 through several connecting posts.

[0064] Specifically, a barcode scanner mounting assembly 50 is also fixedly installed on the test bench 10;

[0065] The barcode scanner mounting assembly 50 includes a position adjustment component 52 for adjusting the position and shape of the automatic barcode scanner 60. One end of a vertically arranged vertical rod 51 and one end of a horizontally arranged horizontal rod 53 are respectively slidably inserted on the position adjustment component 52. The other end of the vertical rod 51 is fixedly connected to the test bench 10, and the other end of the horizontal rod 53 is fixedly connected to the automatic barcode scanner 60.

[0066] like Figure 2 As shown, when the position adjustment component 52 is not limited, it can slide or rotate longitudinally along the vertical bar 51, and it can also slide or rotate horizontally along the horizontal bar 53. Therefore, by adjusting the position of the position adjustment component 52, the position and posture of the automatic barcode scanner 60 installed on it can be adjusted accordingly, so that the automatic barcode scanner 60 can be aligned with the QR code 110 on the PCB. After the position and posture of the automatic barcode scanner 60 are adjusted, the position adjustment component 52 can be fixed to the vertical bar 51 and the horizontal bar 53 respectively, which is very convenient.

[0067] For example, in this embodiment, the drive component 70 is a cylinder;

[0068] When the solenoid valve 12 is closed or open, the cylinder is activated and can drive the test pin plate 30 to move down a predetermined height, so that a number of PIN pins 32 make electrical contact with a number of predetermined test points on the PCB.

[0069] For example, in this embodiment, the inductive switch 221 is a limit switch.

[0070] As an optional implementation, in this embodiment, both the control board 11 and the solenoid valve 12 are located inside the test bench 10.

[0071] Example 2:

[0072] This embodiment provides an automatic barcode scanning test system, including a test fixture as described in Embodiment 1, a host computer, and an electrical performance parameter test device for electrically connecting the test fixture to test the electrical performance parameters of the PCB.

[0073] The host computer is in communication connection with the electrical performance parameter testing device and the control board 11 of the testing fixture.

[0074] Since the relevant structure and principle of the testing fixture have been described in detail in Embodiment One, no further description is given in this embodiment.

[0075] The automatic code scanning testing system can realize automatic code scanning, testing, testing data transmission and storage, etc., through the control of the host computer (such as a computer), greatly improving the accuracy and efficiency of testing, and realizing the traceability and query of testing data.

[0076] The electrical performance parameter testing device is used to perform specific testing tasks of the PCB (such as a battery protection board), such as the measurement of parameters such as voltage, current, internal resistance, etc. There are many types of electrical performance parameter testing devices, which can be selected according to testing requirements. Since the testing principle of the electrical performance parameter testing device is known or conventional, no further description is given in this embodiment. It can be understood that the testing by the testing device is stable in performance and accurate and reliable in testing results, and can meet the high-precision testing requirements. It is equipped with a serial communication interface, which can also exchange data with the host computer.

[0077] It should be noted that the automatic code scanning gun 60 of this embodiment has the functions of automatic code scanning, high-precision identification and real-time communication, and is used to automatically identify and read the two-dimensional code 110 (bar code information) on the PCB. The device can be controlled by the host computer to efficiently and accurately realize the code scanning task and transmit the data to the host computer for processing and storage.

[0078] In summary, the automatic code scanning testing system provided in this embodiment realizes the replacement of traditional manual code scanning testing means by means of automation, promotes the technological progress and industrial upgrading of the industry, improves the testing efficiency and accuracy, and realizes the consistency and reliability of the testing process. Moreover, the host computer can be remotely monitored and operated, improving the convenience and flexibility of management.

[0079] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some technical features. Such modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A test fixture, comprising: It includes a positioning base (20) and a driving member (70); the driving member (70) drives a test needle plate (30), and the test needle plate (30) is located above the positioning base (20); A PCB positioning groove (22) matched with the shape of a PCB (100) to be tested is arranged on the top of the positioning base (20); a plurality of predetermined mounting positions of the test needle plate (30) are respectively provided with PIN needles (32) electrically connected with an electrical performance parameter testing device; when the PCB (100) to be tested is correctly placed in the PCB positioning groove (22), the plurality of PIN needles (32) are just aligned with a plurality of predetermined test point positions on the PCB (100) to be tested. A groove bottom of the PCB positioning groove (22) is provided with an induction switch (221) for detecting whether the PCB (100) to be tested is correctly placed; the induction switch (221) is electrically connected with a control board (11); the control board (11) is electrically connected with a solenoid valve (12) for controlling the driving member (70); when the PCB (100) to be tested is correctly placed in the PCB positioning groove (22), the control board (11) controls the solenoid valve (12) to be closed or turned on.

2. The test fixture of claim 1, wherein It also includes a test table (10), and the positioning base (20) is installed on the top of the test table (10); An automatic code scanning gun (60) is also installed on the test table (10), and the automatic code scanning gun (60) is electrically connected with the control board (11); when the PCB (100) to be tested is correctly placed in the PCB positioning groove (22), the automatic code scanning gun (60) is just aligned with a two-dimensional code (110) on the PCB (100) to be tested.

3. The test fixture of claim 2, wherein, The test table (10) is fixedly connected with a support frame (40), and the support frame (40) includes two vertical plates (401) fixedly connected to the test table (10) at intervals and an installation plate (402) fixedly connected to two ends of the two vertical plates (401); The driving member (70) is fixedly connected to the installation plate (402), and a driving end of the driving member (70) is connected with a pressing block (71) fixedly connected with the top of the test needle plate (30).

4. The test fixture of claim 3, wherein, The driving member (70) is arranged on the front side of the installation plate (402), and two vertically arranged guide rods (41) are also fixedly connected to the rear side of the installation plate (402); the bottom ends of the guide rods (41) are fixedly connected to the top of the test table (10); Corresponding positions of the test needle plate (30) to the guide rods (41) are provided with guide holes, and the test needle plate (30) is slidably sleeved on the guide rods (41) through the guide holes.

5. The test fixture of claim 4, wherein, The top of the plurality of PIN needles (32) is also provided with a protective baffle (31) fixedly connected with the top of the test needle plate (30) through a plurality of connecting columns.

6. The test fixture of claim 2, wherein The test table (10) is also fixedly provided with a code scanning gun mounting assembly (50). The code scanning gun mounting assembly (50) comprises a position adjusting member (52) for adjusting the position of the automatic code scanning gun (60), one end of a vertical pole (51) and one end of a horizontal pole (53) are respectively slidably inserted into the position adjusting member (52), the other end of the vertical pole (51) is fixedly connected with the test table (10), and the other end of the horizontal pole (53) is fixedly connected with the automatic code scanning gun (60).

7. The test fixture of claim 1, wherein The driving member (70) is a pneumatic cylinder. When the electromagnetic valve (12) is closed or turned on, the pneumatic cylinder is started and can drive the test needle plate (30) to move downward by a predetermined height, so that the plurality of PIN needles (32) are respectively in electrical contact with a plurality of predetermined test points on the PCB (100) to be tested.

8. The test fixture of claim 1, wherein The inductive switch (221) is a travel switch.

9. The test fixture of claim 2, wherein, The control board (11) and the electromagnetic valve (12) are arranged in the inner cavity of the test table (10).

10. An automatic code scanning test system, characterized by, The test fixture, the host computer and the electrical performance parameter test equipment for electrically connecting the PIN needles (32) of the test fixture to test the electrical performance parameters of the PCB are provided. The host computer is in communication connection with the electrical performance parameter test equipment and the control board (11) of the test fixture.

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