JPS6221253A - Power module - Google Patents

Abstract

PURPOSE:To provide good workability for the connecting with external circuits as well as to make erroneous wiring hardly occur by providing the connector structure to the input terminal for leading an external driving signal to the interface circuit and to the input terminal of the power circuit. CONSTITUTION:A module 1 includes therein a base driver circuit 15 as an interface circuit which operates upon receipt of an externally supplied driving signal at an input terminal 14, and an inverter circuit 17 as a power circuit having an input terminal 16 (16a-16c). The terminals 14, 16 are, for instance, of the integral pressure welding type connector structure, and projectively provided on the upper surface of the module 1. Therefore, the connecting of external circuits to the circuits 15, 17 may be made by inserting the plug provided on the end portion of the connecting wire into the terminals 14, 16 of the receptacle structure, and the circuits can be disconnected therefrom by pulling out the plug.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is applicable to power modules, particularly inverter devices for AC motor control, AC stabilized power supplies, cycloconverters, DC motor control power supplies, DC stabilized power supplies, etc. The present invention relates to a power module applied to.

[Conventional technology]

Figure 8 is a front view of a transistor power module designed and manufactured for conventional isolated switching.
In the figure, 1 is a power module, 2 is a mounting plate for attaching this power module 1 to a radiation fin, and 3a to 3c
5 is a terminal block provided on the top surface of the power module 1 to receive an external base drive signal, and 4 is a faston tab provided on the top surface of the power module 1 to connect to the collector and emitter of the internal power Darlington transistor. It is a terminal.

FIG. 9 is an internal connection diagram of the power module 1,
Two Darlington transistors 5a connected in series
, 5b and respective Darlington transistors 5a.
, 5b are connected in antiparallel to high-speed diodes 8a and 6b, and 3a to 3c are terminal blocks.

FIG. 10 shows an inverter circuit configured using the above power module 1, in which 7 is an AC input terminal, 8 is an AC input terminal, and 8 is an AC input terminal.
is a rectifier circuit, and 9 is a smoothing capacitor.

10 is an inverter circuit made up of three power modules 1; 11 is a base drive circuit for driving the bases of the transistors forming the power module /I/1;

12 is a motor as a load, and 13 is a control signal generation circuit.

[Problem that the invention seeks to solve]

Since the conventional power module is constructed as described above, it is necessary to swage each wire one by one in order to connect it to the faston tab terminals 4a to 4d.

Further, in order to connect to the terminal blocks 3a to 3c, screwing work is required for each, which causes problems in that workability is poor and wiring errors are likely to occur. In addition, a separate base drive circuit is required, and there are restrictions on wiring length, which poses problems such as placement and structural restrictions.

This invention was made to solve the above-mentioned problems. By using a connector structure for external connection terminals, it is possible to create a small power module that eliminates wiring errors, is easy to attach and detach, and has high work efficiency. The purpose is to obtain.

[Means for Solving the Problems] A power module according to the present invention includes a built-in power circuit connected to an interface circuit that operates in response to a drive signal supplied from the outside, and connects the input terminal of the interface circuit and the The input/output terminals of the power circuit have a connector structure.

[Effect]

In this invention, the input terminal of the interface circuit and the input/output terminal of the power circuit have a connector structure, so that attachment/detachment work is facilitated and work efficiency is improved.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1, in which the same parts as in FIG. 8 are given the same reference numerals.

@1 In Figure 1, the power module 1 is a power circuit having a base drive circuit 15 as an interface circuit that operates by receiving a drive signal supplied from an external force at an input terminal 14, and input/output terminals 16 (16a to 16c). It has a built-in inverter circuit 17.

The input terminal 14 and the input/output terminal 16 have, for example, a collective press-contact type connector structure, and are provided protruding from the upper surface of the power module 1.

Therefore, the base drive circuit 15 and the inverter circuit 17
To connect the external circuit to the external circuit, simply insert the plug provided at the end of the connecting wire (not shown) into the input terminal 14 and input/output terminal 16 of the outlet structure, and disconnect the circuit by disconnecting the plug. You can let go.

2 to 4 show other embodiments of the present invention that enhance the heat dissipation effect of the power module 1, and FIG. 2 shows an example in which the heat dissipation fins 1B are integrally formed on the mounting plate 2 of the power module N1. In the figure, one end of a heat pipe 19 is built into the power module 1, and a radiation fin 20 is installed at the other end of the heat pipe.
An example of setting.

FIG. 4 shows an example in which the mounting plate of the power module N1 is a closed box body 21, heat radiation fins 22 are provided on the outer surface of the closed box body, and boiling coolant 23 is sealed inside the closed box body.

In the examples shown in FIGS. 2 and 4, seven flange portions 18, 22 are provided on the peripheral surfaces of the mounting plate 2 and the closed box body 21 to facilitate attachment to the electrical equipment main body 22.

FIG. 5 shows an example of a base drive circuit 150 using a photocoupler 24 as an input coupling means, and the output of the base drive circuit is used as the output transistor Tr1. Tr2 k control. 6th
The figure shows an example in which the input coupling means is composed of an original fiber group 25 and an optical/electrical conversion circuit 26. This optical/electrical conversion circuit 26 includes a light receiving element 26a, an amplifier circuit 26b, a comparison circuit 26
c. Setting circuit 26d.

Figure 7 shows an inverter circuit 17t consisting of a resistor 26e, an input terminal 26f with an outlet structure, an output terminal 26g, etc.
- In an example configured with a plurality of power FETs, the input terminal 14 of the base drive circuit 15 and the input/output terminals 16a to 16c of the inverter circuit 17 have an outlet structure.

[Effects of the Invention] As described above, according to the present invention, the input terminal for guiding an external drive signal to the interface circuit and the input/output terminal of the power circuit have a connector structure, so that the workability of connection with the external circuit is improved. It also has the effect of reducing the possibility of miswiring, making it effective and suitable for downsizing power modules.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a power module according to an embodiment of the present invention, FIGS. 2 to 4 are the same views provided with heat dissipation means, and FIG. 5 is a diagram in which the input coupling means is configured with a photocoupler. FIG. 6 is a diagram showing another example of the configuration of the input coupling means, and FIG.
Figure 8 shows a power circuit constructed of puff FETs, Figure 8 is a front view of a conventional power module, Figure 9 is its internal wiring diagram, and Figure 10 is a circuit diagram to which this power module is applied. 14 is an input terminal, 15 is an interface circuit, 16a
~16c is an input/output terminal, and 1γ is a power circuit. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Patent Applicant Mitsubishi Oki Co., Ltd. Agent Patent Attorney 1) Hiroshi Sawa 1976 J
:F. (2 others) -- Figure 2, Figure 3, Figure 4, 16 1 → Figure 9 Procedures Amendment (voluntary)

Claims (1)

[Claims] In a power module that incorporates an interface circuit that operates in response to a drive signal supplied from the outside and a power circuit connected to this interface circuit, the input terminal of the interface circuit and the input/output terminal of the power circuit have a connector structure. A power module that is characterized by: