Non-welding type IPM module detection device

Abstract

The utility model relates to the field of protection circuits, in particular to a non-welding type IPM (Intelligent Power Module) detection device, which comprises a substrate, an IPM and a plurality of female seat terminals, the IPM module is connected with the plurality of female seat terminals in a plug-in manner, the plurality of female seat terminals are respectively fixed on the substrate in a welding manner, and the distribution positions of the female seat terminals on the substrate are in one-to-one correspondence with pin positions of the IPM module. According to the device, the female seat terminal is welded on the substrate, so that direct insertion type connection of the IPM module is realized, welding is not needed, the module can be conveniently and quickly mounted and replaced, and damage to the module and the substrate caused by a traditional welding mode is avoided. The motor driver board is simple in structure, aims to solve the problem that the IPM module in the motor driver board of the household appliance is difficult to disassemble and assemble during failure analysis, and remarkably improves the efficiency of failure analysis of the IPM module.

Description

TECHNICAL FIELD

[0001] The utility model relates to a protection circuit especially non -welded IPM module detection device. BACKGROUND

[0002] The household appliance market is huge in scale and various in product types, and washing machines, refrigerators, air conditioners and the like are all representatives among them. IPM modules (Intelligent Power Module) on motor drive boards as core components are prone to faults in the production and use processes.

[0003] The IPM module adopts a power switching device IGBT (Insulated Gate Bipolar Transistor), has the advantages of GTR (high-power transistor) high current density, low saturation voltage and high voltage resistance and the advantages of MOSFET (field effect transistor) high input impedance, high switching frequency and low driving power. The IPM internally integrates logic, control, detection and protection circuits, is convenient to use, not only reduces the size of the system and the development time, but also greatly enhances the reliability of the system, adapts to the development direction of today's power devices - modularization, compounding and power integrated circuit (PIC), and is applied more and more widely in the field of power electronics.

[0004] However, in the prior art, the IPM module pins are fixed on the substrate by welding. Since the IPM module pins are dense, this welding fixing mode is prone to damage the IPM module and the substrate in the process of multiple welding, and the welding operation is time-consuming and laborious. Moreover, when the IPM module fails, the IPM module needs to be disassembled, replaced and detected for in-depth analysis of the fault reason, and the welding fixing mode is not convenient for disassembly of the IPM module.

[0005] Therefore, it is urgent to develop a non-welded IPM module detection device to facilitate disassembly of the IPM module. Utility model content

[0006] The utility model discloses to avoid the deficiencies existing in the prior art, provide a kind of non-welded IPM module detection device, to facilitate the disassembly of IPM module on substrate, improve detection efficiency and accuracy.

[0007] Therefore, the utility model provides a kind of non-welded IPM module detection device, including substrate, IPM module and multiple female seat terminals;The IPM module is connected with multiple female seat terminals by plug-in mode, and multiple female seat terminals are fixed on substrate by welding mode respectively, and the distribution position of female seat terminal on substrate and the pin bit of IPM module one-to-one correspondence.

[0008] As a preferred technical scheme of the present application, the substrate is provided with a via hole pad, the inner layer of the female seat terminal has a U-shaped copper spring, and the U-shaped copper spring is fixed to the via hole pad by means of tin soldering.

[0009] As a preferred technical scheme of the present application, the U-shaped copper spring has a pin at the bottom, and the pin is fixed to the via hole pad by means of tin soldering.

[0010] As a preferred technical scheme of the present application, the female seat terminal has an outer terminal insulating shell.

[0011] As a preferred technical scheme of the present application, the female seat terminal is a metal terminal with good conductivity.

[0012] As a preferred technical scheme of the present application, the high-voltage side of the IPM module is rectified by a 220V rectifying filter and then boosted to 310V by an IGBT booster for driving power supply.

[0013] As a preferred technical scheme of the present application, the low-voltage control of the IPM module is output by a step-down transformer for 15V power supply.

[0014] The utility model provides a novel household appliance electric appliance motor drive board IPM module non -welding type dismounting detection device, the device is through the female seat terminal welding on the substrate, realizes the direct plug -in connection of IPM module, need not heating welding, greatly simplifies the dismounting and detection process of IPM module on the substrate, the non -welding type IPM module detection device of the utility model has the advantages such as the circuit of drive board IGBT pin short -circuit automatic opening, simple structure, low cost, high safety and the like.

[0015] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0017] Figure 1 It is a structural schematic view of the non -welding type IPM module detection device of the utility model;

[0018] Figure 2 It is a schematic view of the non -welding type IPM module detection device of the utility model in the state of not installing IPM module;

[0019] Figure 3It is the structure schematic view of the female seat terminal in the non-welding type IPM module detection device of the utility model;

[0020] Figure 4 It is the sectional view of the female seat terminal welded on the substrate in the non-welding type IPM module detection device of the utility model;

[0021] Figure 5 It is the structure schematic view of the pin of the IPM module and the female seat terminal connection in the non-welding type IPM module detection device of the utility model;

[0022] Figure 6 It is the working principle schematic view of the detection substrate in the non-welding type IPM module detection device of the utility model;

[0023] The figure mark explanation: 1, substrate;2, female seat terminal;3, IPM module;11, via pad;21, terminal insulation shell;22, U-shaped copper spring piece. Specific implementation

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] As Figures 1-6 The utility model discloses a non -welding type IPM module detection device, including: substrate 1, IPM module 3 and the good metal female seat terminal 2 of setting at substrate 1 on multiple conductivity, IPM module 3 is straightly inserted on female seat terminal 2, and female seat terminal 2 is arranged and welded on substrate 1 on corresponding IPM module foot position respectively.

[0026] Specifically, a plurality of via pads 11 are provided on the substrate 1, the female seat terminals 2 are inserted into the via pads 11, the female seat terminals 2 are fixed to the substrate 1 by soldering, and the female seat terminals 2 are one-to-one corresponding to the IPM module pin positions at the corresponding positions of the substrate. The IPM module 3 is connected with the female seat terminals by plugging, realizing non-welding installation and quick disassembly of the IPM module on the substrate, significantly improving the replacement efficiency of the IPM module and reducing the damage of the module caused by welding.

[0027] As Figure 5 The female seat terminal 2 includes a U-shaped copper spring piece 22 at the inner layer and a terminal insulation shell 21 at the outer layer, the U-shaped copper spring piece 22 has a pin at the bottom, and the pin is fixed by soldering with the via pad 11. By setting the U-shaped copper spring piece 22, the current and signal transmission can be ensured, the module pin can be effectively connected after being inserted, by setting the terminal insulation shell 21, the gap short circuit between the module pins can be prevented, the module can be locked by pressing downward, and the module can be removed by lifting upward, facilitating quick IPM module disassembly, detection and analysis.

[0028] As Figure 6 The working principle of the substrate is shown: zero fire line access, after rectification filtering through 220V rectification filter, through IGBT booster to 310V to IPM module high voltage side drive power supply, switch voltage transformer step-down output 5V to MCU power supply, 15V to IPM module low voltage control power supply, MCU sends six-phase drive PWM to IPM module, IPM module outputs U V W three-phase power supply drives motor rotation.

[0029] The utility model provides a kind of non-welding IPM module detection device, for the quick dismounting maintenance and test method of household appliance motor drive board, it is especially suitable for IPM module failure analysis;It aims at the problem of difficult dismounting when IPM module failure analysis in household appliance motor drive board.The device is welded on substrate by female seat terminal, realize the straight insertion type connection of IPM module, without welding, the installation and replacement of module are conveniently and quickly, avoid the damage caused to module and substrate by traditional welding mode.The utility model structure is simple, significantly improve the efficiency of IPM module failure analysis.

[0030] The above only for the preferred embodiment of the present application, and is not used to limit the present application, for the skilled in the art, the present application can have various changes and changes. Any modification, equivalent replacement, improvement etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A non-welded IPM module detection device, characterized by, It comprises a substrate (1), an IPM module (3) and a plurality of female terminal (2); The IPM module (3) is connected with the plurality of female terminal (2) by plug-in mode, the plurality of female terminal (2) is fixed on the substrate (1) by welding mode respectively, and the distribution position of the female terminal (2) on the substrate (1) corresponds to the pin of the IPM module (3) one by one.

2. The non-welded IPM module detection device of claim 1, wherein, The substrate (1) is provided with a via pad (11), the inner layer of the female terminal (2) has a U-shaped copper spring (22), and the U-shaped copper spring (22) is fixed with the via pad (11) by soldering mode.

3. The non-welded IPM module detection device of claim 2, wherein, The U-shaped copper spring (22) has a pin at the bottom, and the pin is fixed with the via pad (11) by soldering mode.

4. The non-welded IPM module detection device of claim 2, wherein, The female terminal (2) has an outer terminal insulating shell (21).

5. The non-welded IPM module detection device of claim 1, wherein, The female terminal (2) is a metal terminal with good conductivity.

6. The non-welded IPM module detection device of claim 1, wherein, The high-voltage side of the IPM module (3) is rectified and filtered by a 220V rectifier filter, and then boosted to 310V by an IGBT booster for driving power supply.

7. The non-welded IPM module detection device of claim 1, wherein, The low-voltage control of the IPM module (3) is output by a switching voltage transformer to supply 15V power.

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