Mother-son board test fixture for testing various power supply modules

Abstract

The utility model discloses a daughter board and mother board test fixture for testing various power supply modules, which comprises a main board, a daughter board and a small board, eight three-terminal connectors are arranged on the back of the main board and are used for connecting eight oscilloscope probes, and at most eight paths of power supply modules can be measured. And meanwhile, a signal end sampling terminal is designed on the mainboard. The main board is provided with the connecting terminals connected with the daughter boards, and a board-to-board connector is adopted, so that switching of different daughter boards can be realized. The mainboard is provided with one AC / DC input terminal and eight output terminals. Test seats are designed on the daughter board for different modules. By adopting the sub-mainboard combined design, various different modules, including AC / DC and DC / DC modules, can be tested, and the power supply module testing device is suitable for testing different power supply modules with wide-range voltage and current input and wide-range voltage and current output.

Description

Technical Field

[0001] This utility model relates to a power module testing fixture, and more particularly to a motherboard testing fixture for testing multiple power modules. Background Technology

[0002] Power modules are widely used in various fields to provide power to equipment and instruments. They convert the output voltage of a power source into a voltage suitable for specific equipment. Power modules are widely used in electronic equipment, communication equipment, industrial automation, medical equipment, and new energy fields. They provide a stable and reliable power supply, ensuring the normal operation of various devices. With continuous technological advancements, the performance of power modules is constantly improving, better meeting the needs of various fields.

[0003] Power modules used in electronic and communication equipment require testing of parameters such as voltage, ripple, power, and accuracy for modules with multiple output voltages. Some existing test fixtures have problems, such as not being able to simultaneously meet AC and DC input tests, not being able to meet wide-range input voltage tests, high output voltage tests, or not being universally applicable to testing multiple modules.

[0004] For the reasons mentioned above, it is particularly important to design a universal, easily replaceable power module test fixture that can achieve a wide range of voltage and current inputs, and also to design a test fixture with an aesthetically pleasing appearance.

[0005] In view of the above, this utility model is hereby proposed. Utility Model Content

[0006] The purpose of this invention is to provide a motherboard test fixture for testing various power modules, so as to solve the above-mentioned technical problems existing in the prior art.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] This utility model provides a motherboard and daughterboard test fixture for testing various power modules, including a motherboard, a daughterboard and a small board.

[0009] The motherboard has AC and DC cable-to-board connection sockets, namely: input AC socket 1 and input DC socket 2. During the test, it is connected to the input source through wires and housings.

[0010] The motherboard has three board-to-board connectors 3, 6, and 7, and the daughterboard has three corresponding board-to-board connectors 31, 32, and 33, which connect to the three connectors 3, 6, and 7 on the motherboard.

[0011] Board-to-board connector 31 is an input connector for AC / DC module input measurement; board-to-board connectors 32 and 33 are output connectors for 8-channel output measurement.

[0012] The sub-board has a power module insertion position 34.

[0013] Compared with the prior art, the motherboard test fixture for testing various power modules provided by this utility model is universal, easy to replace, and enables power module testing with a wide range of voltage and current inputs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the motherboard in an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the small board in an embodiment of this utility model;

[0016] Figure 3 This is a schematic diagram of the sub-plate in an embodiment of this utility model.

[0017] In the picture:

[0018] 1. Input AC socket; 2. Input DC socket; 3, 6, 7. Board-to-board connection sockets on the main board; 4, 5. Signal connection terminals; 8, 9, 10, 11, 12, 13, 14, 15. Small board; 16, 17, 18. Output connection terminals; 19. Screw mounting holes; 20, 21, 22. Solder pad holes; 31, 32, 33. Board-to-board connection sockets on the daughterboard. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments, which do not constitute a limitation on the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] First, the following explanations are provided for the terms that may be used in this article:

[0021] The term "and / or" means that either or both can be achieved simultaneously. For example, X and / or Y means that it includes both "X" or "Y" as well as the three cases of "X and Y".

[0022] The terms “including,” “comprising,” “containing,” “having,” or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example, “including a technical feature element (such as raw material, component, ingredient, carrier, dosage form, material, size, part, component, mechanism, device, step, process, method, reaction conditions, processing conditions, parameter, algorithm, signal, data, product or article of manufacture, etc.)” should be interpreted as including not only the expressly listed technical feature element, but also other technical feature elements that are not expressly listed and are well-known in the art.

[0023] The term "composed of" excludes any technical features not expressly listed. When used in a claim, it closes the claim to exclude all technical features other than those expressly listed, except for associated conventional impurities. If the term appears only in a clause of a claim, it limits the claim to the elements expressly listed in that clause; elements recited in other clauses are not excluded from the overall claim.

[0024] The contents not described in detail in the embodiments of this utility model are existing technologies known to those skilled in the art. Where specific conditions are not specified in the embodiments of this utility model, they shall be performed according to conventional conditions in the art or conditions recommended by the manufacturer. Reagents or instruments used in the embodiments of this utility model whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0025] The present invention provides a motherboard and daughterboard test fixture for testing various power modules, comprising a motherboard, a daughterboard, and a small board;

[0026] The motherboard has AC and DC cable-to-board connection sockets, namely: input AC socket 1 and input DC socket 2. During the test, it is connected to the input source through wires and housings.

[0027] The motherboard has three board-to-board connectors 3, 6, and 7, and the daughterboard has three corresponding board-to-board connectors 31, 32, and 33, which connect to the three connectors 3, 6, and 7 on the motherboard.

[0028] Board-to-board connector 31 is an input connector for AC / DC module input measurement; board-to-board connectors 32 and 33 are output connectors for 8-channel output measurement.

[0029] The sub-board has a power module insertion position 34.

[0030] The main board has eight small boards, each of which has a three-terminal connector and is connected to an oscilloscope probe. The multiple three-terminal connectors are connected to multiple power supply modules under test with different output requirements.

[0031] The motherboard is designed with two signal connection terminals 4 and 5 for collecting voltage and current signals respectively, and three output connection terminals 16, 17, and 18. The three output connection terminals 16, 17, and 18 connect the module output terminals on the daughterboard to the electronic load.

[0032] In summary, the motherboard and daughterboard test fixture for testing various power modules according to embodiments of the present invention relates to the field of power testing system technology and consists of a motherboard and daughterboards. Eight three-terminal connectors are provided on the back of the motherboard for connecting eight oscilloscope probes, enabling up to eight-channel measurements of the power module. Signal sampling terminals are also designed on the motherboard. Connection terminals to the daughterboards are provided on the motherboard using board-to-board connectors, allowing for switching between different daughterboards. The motherboard has one AC / DC input terminal and eight output terminals. Test sockets are designed on the daughterboards for different modules. This motherboard and daughterboard combination design enables testing of various modules, including AC / DC and DC / DC modules. This application is applicable to testing different power modules with wide-range voltage and current input and wide-range voltage and current output.

[0033] Its specific design features:

[0034] 1) The small board on the motherboard uses a three-terminal connector, which can currently realize the testing of power modules with 1-8 different output requirements; it is suitable for different power modules with multiple outputs.

[0035] 2) The single-ended connector on the motherboard is soldered to the motherboard via a small board; the connection method is reliable and oscilloscope probes can be directly inserted, enabling the test points of the module under test to be located nearby, thus reducing measurement errors;

[0036] 3) The motherboard is designed with AC and DC input terminals, which can realize the testing of different power modules with AC and DC input.

[0037] 4) The daughterboard uses test fixtures to insert the module under test, making it convenient to pick up and place the power module during the testing process. Employees do not need to wire each power module pin. Before testing, simply place the module on the daughterboard, where the fixtures will hold the module in place. Testing can begin in one step, greatly improving production efficiency.

[0038] 5) The motherboard and daughterboard adopt a board-to-board connection method, which ensures a firm connection and improves product reliability. Since the daughterboard uses a fixture to fix the module, there are no wires on the front of the test fixture; this saves production time and reduces wire waste during batch testing of modules.

[0039] 6) Different types of test fixtures can be designed for the daughterboard, which is suitable for testing different power modules, greatly improving the compatibility of power module testing.

[0040] To more clearly demonstrate the technical solution and its effects provided by the present invention, the embodiments of the present invention will be described in detail below with reference to specific examples.

[0041] The present invention adopts the following technical solution:

[0042] This utility model provides a test fixture suitable for different power modules, which consists of a main board and a daughter board.

[0043] To enable testing of different modules with AC and DC inputs, AC input terminals and DC input terminals were set up respectively;

[0044] To enable the fixture to acquire 1-8 channels of output voltage, eight small boards were designed on the main board. Each small board has a three-terminal connector that can be connected to an oscilloscope probe to meet the 1-8 channel output requirements of the test system.

[0045] To enable wide-range input and output voltage testing, a 750V connector was designed.

[0046] To enable high-current testing, the existing test sockets are connected in parallel to increase the current carrying capacity.

[0047] To enable testing of different modules, board-to-board connectors were designed on the sub-motherboard, and different circuit board package diagrams were made on the sub-board for different modules, which can realize the connection and switching of different small boards.

[0048] This invention features eight three-terminal connectors on the back of the mainboard for connecting eight oscilloscope probes, enabling 1-8 channel measurements of the power module. Signal sampling terminals are also designed on the mainboard. Connection terminals to daughter boards are provided on the mainboard using board-to-board connectors, allowing for switching between different daughter boards. AC / DC input terminals and eight output terminals are provided on the mainboard. Test sockets are designed for different modules on the daughter boards. This combined motherboard and daughterboard design allows for testing of various power modules, including AC / DC and DC / DC modules; this application is applicable to testing various power modules with a wide range of voltage and current inputs and outputs.

[0049] Example 1

[0050] like Figures 1 to 3 As shown:

[0051] To achieve the goal of testing multiple modules simultaneously, this utility model adopts a sub-motherboard design. The motherboard is designed with AC and DC line-to-board connection sockets. Three round holes represent pad positions 20, 21, and 22 for inserting terminals; one round hole represents screw mounting position 19 for fixing the circuit board.

[0052] Figure 1In the test, the input is connected to AC socket 1 and DC socket 2. During the test, the input source is connected to the housing by wire, and the housing is then connected to the socket to realize the input connection.

[0053] Two signal connection terminals 4 and 5 are used to acquire voltage and current signals; three output connection terminals 16, 17, and 18 are used to connect the module output terminals on the daughterboard to the electronic load.

[0054] The three board-to-board connectors 3, 6, and 7 are mainly used to connect the daughterboard and the motherboard.

[0055] like Figure 2 As shown, the eight small boards 8-15 are designed with three-terminal connectors for connecting oscilloscope probes to achieve testing of various parameters such as module voltage, ripple, power and accuracy;

[0056] like Figure 3 As shown, three board-to-board connection sockets 31, 32, and 33 are designed on the daughterboard; these three sockets are connected to three sockets 3, 6, and 7 on the motherboard.

[0057] Figure 3 In the middle, socket 31 is an input terminal connection socket, which can realize AC / DC module input measurement; sockets 32 and 33 are output terminal connection sockets, which can realize 8-channel output measurement.

[0058] Figure 3 The circuit board includes power module insertion slots (34), and a test socket for the power modules is designed on the daughterboard. By changing the test socket on the daughterboard, different power modules can be tested, greatly improving testing efficiency and compatibility.

[0059] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims. The information disclosed in the background section is intended only to enhance the understanding of the overall background technology of this utility model and should not be construed as an admission or implication in any way that such information constitutes prior art known to those skilled in the art.

Claims

1. A motherboard test fixture for testing multiple power modules, characterized in that, Including motherboards, daughterboards, and miniature boards; The motherboard is equipped with AC and DC wire-to-board connection sockets, namely: input AC socket (1) and input DC socket (2). During the test, it is connected to the input source through wires and plastic shells. The motherboard has three board-to-board connectors (3, 6, 7), and the daughterboard has three corresponding board-to-board connectors (31, 32, 33), which connect to the three connectors (3, 6, 7) on the motherboard. The board-to-board connection socket (31) is an input connection socket for AC / DC module input measurement; the board-to-board connection sockets (32, 33) are output connection sockets for 8-channel output measurement. The sub-board has a power module insertion position (34).

2. The motherboard test fixture for testing various power modules according to claim 1, characterized in that, The main board has eight small boards, each with a three-terminal connector and connected to an oscilloscope probe. The multiple three-terminal connectors are connected to multiple power supply modules under test with different output requirements.

3. The motherboard test fixture for testing various power modules according to claim 1 or 2, characterized in that, The motherboard is designed with two signal connection terminals (4,5) for collecting voltage and current signals respectively, and three output connection terminals (16,17,18). The three output connection terminals (16,17,18) connect the module output terminals on the daughterboard to the electronic load.

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