JP2692449B2 - Power module - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is, for example, a general-purpose inverter, servo amplifier is relates to the power module used in the power conversion circuit such as a UPS.

[0002]

2. Description of the Related Art In recent years, along with the development of power electronics, the development of products using them has been remarkable. In particular, general-purpose inverters and servo amplifiers, which have a large number of mass-produced units, have conventionally been wired with wires to improve mass productivity (workability) and maintainability. In recent years, there is an example in which a large current wiring board is used for wiring.

FIG. 4 shows a mounting example using a conventional power module and a high-current wiring board as a power module board for mounting the power module. 5a, b
FIG. 5A is a front view and a side view in a state where the power module 1 and the large-current wiring board 5 shown in FIG. 4 are connected. In the figure, 1 is a power module and 2 is a power module.
Main circuit terminals 3 provided on the upper surface of the module 1 are control circuit faston terminals provided on the upper surface of the power module 1. Reference numeral 4 passes through a through-hole 6 to be described later provided in the large current wiring board 5 and the main circuit terminal block 2 and the large current wiring board 5
, 5 is a large current wiring board, 6 is a through hole provided in the large current wiring board, 7 is a land provided in the large current wiring board 5, and 8 is a large current wiring board. The pattern 9 is a solder to which the control circuit faston terminal 3 and the land 7 are soldered, and 10 is a base substrate of the power module.

A main circuit terminal 2 provided on the upper surface of the power module 1 is fixed to a large current wiring board 5 by screws 4 through through-hole holes 6. At that time, power module
The control circuit faston terminal 3 provided on the upper surface of the loop 1 is inserted into the through hole 6 provided in the large current wiring board 5, and the power module 1 is attached to the large current wiring board 5. The tip portion is seen on the back side of the surface, and the control circuit faston terminal 3 and the land 7 are soldered by the solder 9.

[0005]

SUMMARY OF THE INVENTION Conventional power module
Since the board for power module and power module is constructed as described above, the fastener terminal 3 for the control circuit is soldered to the land 7 on the large current wiring board 5 as the board for power module. It has to be done, which requires time and effort, which in turn increases costs. Also, once soldered, at the time of maintenance, for example, when the power module is damaged and needs to be replaced, simply remove the screw 4 holding the main circuit terminal 2 shown in FIG. Instead, it is necessary to remove the control circuit fastener terminal 3 soldered to the land 7 on the large-current wiring board 5 described above. In this case, a special tool such as a solder suction device is required, and skilled work is required. However, there is a problem in that it requires a lot of time and work.

The present invention has been made in order to solve the above problems, and when mounting the power module on the power module substrate, no soldering work is required, and the power module substrate is mounted and removed. The purpose is to obtain a power module that is easy to work with.

[0007]

A power module according to a first aspect of the present invention has a mounting surface for mounting to a substrate on which a current path for passing a main current is arranged, and a main circuit terminal for handling main power. And a pin shape that extends in a direction perpendicular to the mounting surface of the main circuit terminal to the board, and its tip is higher than the mounting surface of the main circuit terminal to the board, so that signals other than the main power, power, etc. A control terminal to be handled and a plurality of guide pins provided in the vicinity of the control terminal, having a height higher than that of the control terminal, and being inserted into a guide hole formed in the substrate are provided.

A power module according to the second invention is
And have you the power module according to the first invention, the main circuit element, the main circuit drive driving circuit, in which a built-in at least one of the protection circuit and a power supply circuit for protecting the main circuit element.

[0009]

[0010]

[0011]

The main circuit terminal according to the first aspect of the present invention has a mounting surface to be mounted on a board on which a current path for passing a main current is arranged, handles main power, and the control terminal is mounted on the board by the main circuit terminal. In addition to making a pin shape that extends in the direction perpendicular to the surface, its tip is higher than the mounting surface of the main circuit terminal to the board, handles signals other than the main power, power, etc. It is provided in the vicinity and has a height higher than that of the control terminal and is inserted into a guide hole formed in the substrate.

At least one of the drive circuit, the protection circuit and the power supply circuit in the second invention is built in the power module together with the main circuit element, and the main drive circuit drives the main circuit element and the protection circuit. Drives the main circuit element.

[0013]

[0014]

[0015]

【Example】

Embodiment 1 FIG. An embodiment of the first to third inventions will be described with reference to FIGS. In the figure, those denoted by the same reference numerals as those of the conventional example indicate the same or equivalent parts as those of the conventional example.

FIG. 1 is a power module 1A of the first embodiment.
And high-current wiring board 5 as a board for power module
It is a perspective view which shows the structure of A. In the figure, reference numeral 11 denotes a control terminal for handling signals other than main power, power, etc. in the power module, which is a pin extending in a direction perpendicular to the mounting surface of the main circuit terminal 2 for handling main power to the large current wiring board 5. In addition to having a shape, the tip thereof is made higher than the mounting surface of the main circuit terminal on the board, and the main circuit terminal 2 is fixed to the large current wiring board so as to penetrate the large current wiring board. And is an example in which they are arranged in a line.

Reference numeral 12 is at least 2 so that the control terminal 11 can be accurately inserted into the guide hole 14 of the large current wiring board 5A.
This is an example in which the guide pins are provided in more than one place and are arranged at both ends of the control terminal. Reference numeral 13 denotes a control terminal connector into which the control terminal of the power module 1A penetrates and fits in a hole on the large current wiring board 5A. Reference numeral 14 is a guide hole provided in the large-current wiring board 5 for guiding the guide pin 12 for fitting the control terminal 11 of the power module 1A into the connector 13 accurately. The main circuit terminal 2 of the power module 1A is connected to the electrically and structurally large current wiring board 5 by screws 4, the connector control terminal 11 of the power module is mounted on a large-current circuit board 5 1
It is electrically connected to the large-current wiring board 5A through the wiring board 3.

2A and 2B are a front view and a side view in a state where the power module 1A shown in FIG. 1 and the large current wiring board 5A are connected. The main circuit terminal block 2 is connected to the large current wiring board 5 by a screw 4, and the control terminal 11 is connected to the large current wiring board 5A by a connector 13.

Next, the operation will be described. A control terminal (hereinafter, referred to as a control pin) 11 having a pin shape provided in the power module 1A is provided in a direction vertical to the base substrate 10.
That is, the main circuit terminal 2 extends in the direction perpendicular to the mounting surface of the high-current wiring board 5, and the control pin 11 is located farther than the main circuit terminal 2.
Increase the height of the tip of. As a result, the main circuit terminal 2 and the control pin 11 side of the power module 1A are connected to the large current wiring board 5A, the main circuit terminal 2 is fixed to the large current wiring board 5 with the screw 4, and the control pin 11 is connected to the large current. It is inserted into the hole of the wiring board 5A, fitted with the control terminal connector 13, and electrically connected.

The control pin 11 connected to the connector 13 provided on the large current wiring board 5A has a large current wiring board 5A.
Since the power module 1A can be easily and accurately inserted into the connector 13 through the through hole of the guide pin 12,
The guide pin 12 is controlled by contacting the large current wiring board 5 before the control pin 11 when the control pin 11 is about to be inserted into the through hole of the large current wiring board 5 with displacement. Prevents the pin 11 from being deformed. Further, by disposing the guide pins 12 at two or more places, it is possible to prevent the power module 1A and the large current wiring board 5A from being connected in a twisted state, and more accurately, the control pin 11 and the large current wiring board 5A. To be connected. Also,
By disposing the guide pins 12 at both ends of the control pin 11, it is possible to more accurately connect to the connector 13 via the through hole of the large current wiring board 5A.

The large-current wiring board 5A is a large-current wiring board 5
Since the control terminal connector 13 to be fitted with the control pin 11 of the power module 1A is arranged on the back surface of the surface where the power module 1A of A is attached, the power module 1
The control pin 11 of A is fitted into the connector 13 through a through hole provided below the connector 12 attached to the large current wiring board 5A. Therefore, the fitting of the connector 13 mounted on the large-current wiring board 5A and the control pin 11 of the power module 1A is confirmed from the surface of the large-current wiring board 5 opposite to the surface on which the power module 11 is mounted. be able to. Further, the main circuit terminal 2 of the power module 1A and the large current wiring board 5A are connected by a detachable name method such as a screw so that the power module 1A and the large current wiring board 5A can be freely attached and detached. You can Furthermore, since the connector 13 is mounted on the large current wiring board 5 which is a printed circuit board, it can be easily soldered to the large current wiring board 5A in a flow type solder bath.

Embodiment 2 FIG. In FIG. 3, a plurality of control pins 11 which are control terminals of the power module 1B are arranged, the guide pins 12 have the main circuit terminals 15 of the power module 1B in a pin shape, and the main circuit terminals of the large-current wiring board 5B (hereinafter, referred to as main circuit). Main circuit terminal connector 1 for connection with 15)
6.

Next, the operation will be described. The large-current wiring board 5B is connected to the main circuit pins 15 of the power module 1B by the main circuit terminal connector 16 mounted on the large-current wiring board 5B, and can be freely attached and detached from the power module 1B. To do. Further, the connector 16 is arranged on the surface opposite to the surface on which the power module 1B is attached, that is, the rear surface, and the main circuit pin 1 of the power module 1B is arranged.
5 is a connector 16 attached to the large current wiring board 5B
The connector 16 is fitted through a through hole provided below. Therefore, the fitting of the connector 16 mounted on the large current wiring board 5B and the main circuit pin 15 of the power module 1B is confirmed from the surface of the large current wiring board 5B opposite to the surface on which the power module 1B is mounted. be able to. Further, since the connector 16 is mounted on the large current wiring board 5B which is a printed board, it can be easily soldered to the large current wiring board 5B in a flow type solder bath.

As described above, in the first embodiment, the control pin 11 arranged vertically to the terminal mounting surface of the main circuit terminal 2 of the power module 1A is located higher than the main circuit terminal 2, and the control pin 11 is They are arranged in an array and have at least two or more guide pins 12 in the vicinity of the control pin 11. Further, the screw 4 is used to connect the large current wiring board 5A and the main circuit terminal 2 of the power module 1A. By connecting with the connector 13 via the connector 13, the power module 1A can be easily attached to and detached from the large-current wiring board 5A, and the number of assembly steps can be reduced, the time required for maintenance can be shortened, special tools can be eliminated, and work can be simplified. be able to. Further, in the second embodiment, the power module 1B is provided with the pin-shaped main circuit terminals 15 and the connection with the large-current wiring board 5B is the connector connection. Therefore, the attachment / detachment is easier than in the first embodiment, and the work is easier. Became.

It is to be noted that the power module is an intelligent type in which not only the main circuit terminals but also a drive circuit for driving the main circuit terminals, a protection circuit for protecting the main circuit terminals, a drive circuit and a current circuit for the protection circuit are incorporated. In this case, even when the number of control pins is increased as compared with a power module having only main circuit terminals, a plurality of guide pins 12 are provided, so that the power modules 1A and B are mounted on the large current wiring boards 5A and B. Positioning is easy, and control pin 1
Items such as bending 1 can be prevented.

[0026]

As described above, according to the first aspect of the present invention, the main circuit terminal extends in the direction perpendicular to the mounting surface of the main circuit terminal on the board and has a pin shape, and the tip of the main circuit terminal is connected to the board. A control terminal higher than the mounting surface, provided near the control terminal, having a height equal to or higher than the control terminal, and having a plurality of guide pins inserted into guide holes formed in the substrate, There is an effect that it can be easily mounted on the power module substrate.

According to a second aspect of the invention, the power module according to the first aspect includes a drive circuit for driving the main circuit together with a main circuit element, a protection circuit for protecting the main circuit element, and a power supply circuit. Since at least one of them is built in, there is an effect that it can be easily attached to the power module substrate despite its high function.

[0028]

[0029]

[Brief description of the drawings]

FIG. 1 is a diagram showing a power module according to a first embodiment of the first to third inventions and a high-current wiring board as a power module board.

2A and 2B are a front view and a side view showing a state in which the power module shown in FIG. 2 is attached to a large current wiring board.

FIG. 3 is a diagram showing a power module according to an embodiment of the fourth invention and a high-current wiring board as a power module board.

FIG. 4 is a diagram showing a conventional power module and a large-current wiring board.

5A and 5B are a front view and a side view showing a state in which the power module shown in FIG. 4 is attached to a large current wiring board.

[Explanation of symbols]

 1 Power Module 2 Main Circuit Terminal 4 Screw 5A, B Large Current Wiring Board 10 Base Board 11 Control Terminal (Control Pin) 12 Guide Pin 13 Control Terminal Connector 14 Guide Pin Hole 15 Main Circuit Pin 16 Main Circuit Terminal Connector

Claims (2)

(57) [Claims] 1. A power module for power conversion, comprising a main circuit terminal for handling main power, having a mounting surface for mounting on a substrate on which a current path for passing a main current is arranged, and a substrate for the main circuit terminal. It has a pin shape extending in the vertical direction to the mounting surface of, and its tip is higher than the mounting surface of the main circuit terminal to the board, and the control terminal that handles signals and power other than the main power and the control terminal provided near, has a height of more than the control terminal, a power module characterized by including a plurality of guide pins which are inserted through the guide hole formed in the substrate. 2. The power according to claim 1, wherein at least one of a drive circuit for driving the main circuit element, a protection circuit for protecting the main circuit element, and a power supply circuit is incorporated together with the main circuit element. module.