CN205377687U - Inverter power module - Google Patents

Abstract

The utility model provides an inverter power module, including insulated -gate bipolar transistor module, radiator, electric capacity group, interchange output copper bar, the female row of electric capacity, direct -current input copper bar, frame, panel etc. Especially include the electric capacity support. Wherein: radiator, panel, fix in the frame with the dust cover, the insulated -gate bipolar transistor module is fixed on the radiator, the bottom of every electric capacity is fixed on the electric capacity support in the electric capacity group, and the electrode of every electric capacity links to each other with female the arranging of electric capacity, female the arranging of electric capacity also has one end to be connected with the direct -current input copper bar, and the female one end again of arranging of electric capacity links to each other with the positive negative pole of insulated -gate bipolar transistor module, the interchange of the insulated -gate bipolar transistor module utmost point with exchanges the output copper bar and links to each other, exchange and export the copper bar and fix in the frame. Fix the electric capacity back -off in the frame outside, be favorable to the wind channel unblocked, the overall arrangement that misplaces between the electric capacity is favorable to the whole height of compression, the direct -current input copper bar passes through female the arranging of electric capacity switchovers out be convenient for equipment and dismantlement.

Description

A kind of inverter power module

technical field

The utility model relates to the structural design of electrical components, in particular to the structural improvement of a power module.

Background technique

The main defects of existing inverter power modules are:

1. At present, the commonly used power module is the positive discharge of capacitors. Generally, most of the capacitors are located inside the rack, which will cause blockage or greatly increase the resistance of the air duct inside the rack;

2. Multiple capacitors are generally aligned up, down, left, and right. Since a certain space must be ensured between capacitors, the height of the entire module is relatively large, so it cannot be used in occasions that cannot meet specific height requirements;

3. The connection of the capacitor busbar is generally located at the bottom or the rear, so the installation and maintenance of the power module is very inconvenient.

Contents of the invention

The technical purpose of this utility model is to solve the above-mentioned defects of the prior art, and provide an inverter power module with a reasonable layout, which not only ensures the firm fixing of the capacitor and good conductive contact, but also ensures a good air duct inside the frame The cavity; not only ensures a certain space between the capacitors, but also compresses the overall height of the power module to the greatest extent; and at the same time improves the convenience of installing and disassembling the power module.

The technical purpose of the utility model is to adopt the following technical solutions to achieve.

The utility model provides an inverter power module, which includes an insulated gate bipolar transistor module, a radiator, a capacitor group, an AC output copper bar, an insulating column, a capacitor bus bar, a DC input copper bar, a circuit board, and a circuit board Racks, racks, panels, dust covers and especially capacitor mounts. Among them: the radiator, panel, and dust cover are fixed on the frame; the insulated gate bipolar transistor module is fixed on the radiator; the bottom of each capacitor in the capacitor group is fixed on the capacitor bracket, and the electrodes of each capacitor are connected to the The capacitor busbar is connected; one end of the capacitor busbar is connected to the DC input copper bar, and the other end of the capacitor busbar is connected to the positive and negative poles of the insulated gate bipolar transistor module; the AC pole of the insulated gate bipolar transistor module is connected to the AC The output copper bars are connected, and the AC output copper bars are fixed on the rack.

In the technical solution of the utility model, the bottom of each capacitor in the capacitor group is fixed on the capacitor bracket, and this way of fixing the capacitor outside the rack not only ensures the firm fixing of the capacitor and good conductive contact, but also ensures The good air duct cavity inside the rack avoids the problem of excessive airflow resistance caused by devices blocking the airflow.

In the technical solution of the utility model, the capacitors in the capacitor group can be divided into two groups, namely the upper row capacitor group and the lower row capacitor group; the upper row capacitor group and the lower row capacitor group are displaced by half the capacitor width in the vertical direction Fixed installation. This dislocation layout method, under the premise of ensuring a certain space between capacitors, compresses the overall height of the inverter power module to the greatest extent, so it is suitable for occasions with specific height requirements.

In the technical solution of the utility model, the capacitor busbar is directly connected to the DC input copper bar, and the DC input copper bar can be switched out through the capacitor busbar, so that the DC input copper bar is located at the front of the overall inverter power module. Combined with the misalignment of half the capacitor width, a certain height space is freed up, just enough to install the screw holes at the DC input copper bar, so that the front of the power module can be assembled and disassembled very conveniently.

Description of drawings

Fig. 1 has provided the internal structural schematic diagram of the inverter power module of the present utility model;

Fig. 2 shows the overall schematic diagram of the inverter power module of the present invention.

detailed description

The technical solution of the utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

The inverter power module provided by the utility model, as shown in Fig. 1 and Fig. 2, includes an insulated gate bipolar transistor module 9, a radiator 1, a capacitor bank 10, an AC output copper bar 8, an insulating column 2, and a capacitor bus Bar 6, DC input copper bar 7, circuit board 4, circuit board support 5, frame 3, panel 13, dust cover 12, especially capacitor support 11. Wherein: the radiator 1, the panel 13, and the dust cover 12 are fixed on the frame 3; the insulated gate bipolar transistor module 9 is fixed on the radiator 1; the bottom of each capacitor in the capacitor group 10 is fixed on the capacitor bracket 11 Above, the electrodes of each capacitor are connected to the capacitor bus 6; one end of the capacitor bus 6 is connected to the DC input copper bar 7, and the other end of the capacitor bus 6 is connected to the positive and negative poles of the insulated gate bipolar transistor module 9 ; Specifically, the AC output copper bar 8 can be fixed on the frame 3 through the insulating column 2 .

In the embodiment shown in Fig. 1 and Fig. 2, the number of capacitors in the capacitor group 10 is an even number of 8, and the bottom of each capacitor in the capacitor group 10 is fixed on the capacitor bracket 11 by screws, and this buckle is fixed on the frame 3 The external method not only ensures the firm fixing of the capacitor and good conductive contact, but also ensures a good air duct cavity inside the rack 3, avoiding the problem of excessive airflow resistance caused by devices blocking the airflow.

In the embodiment shown in Fig. 1 and Fig. 2, the electric capacity in the capacitor group 10 can be divided into two groups, be respectively the upper row capacitor group and the lower row capacitor group; The upper misalignment is fixed by half the capacitor width. This dislocation layout method, under the premise of ensuring a certain space between capacitors, compresses the overall height of the inverter power module to the greatest extent, so it is suitable for occasions with specific height requirements.

In the embodiment shown in Figures 1 and 2, the capacitor busbar 6 is directly connected to the DC input copper bar 7, and the DC input copper bar 7 can be switched out through the capacitor busbar 6, so that the DC input copper bar 7 is in the The front part of the overall inverter power module, combined with the misalignment of half the capacitor width, frees up a certain height space, which is just enough to install the screw hole at the 7 place of the DC input copper bar, so that it is very convenient to install the power module in front of the power module. Assembly and disassembly.

Claims (7)

1. an inverter power module, including IGBT module, radiator, capacitance group, exchange output copper bar, insulated column, capacitor bus-bar, direct current input copper bar, circuit board, circuit board support, frame, panel, dust cover, it is characterised in that:

Described inverter power module also includes capacitance bracket,

Described radiator, described panel and described dust cover are fixed in described frame,

Described IGBT module is fixed on described radiator；

In described capacitance group, the bottom of each electric capacity is fixed on described capacitance bracket, and the electrode of each described electric capacity is connected with described capacitor bus-bar；

Described capacitor bus-bar also has one end to be connected with described direct current input copper bar, and one end again of described capacitor bus-bar is connected with the both positive and negative polarity of described IGBT module；

The exchange pole of described IGBT module is connected with the described output copper bar that exchanges, and described exchange output copper bar is fixed in described frame.

2. the inverter power module described in claim 1, it is characterised in that:

Electric capacity quantity in described capacitance group is even number.

3. the inverter power module described in claim 1, it is characterised in that:

Described capacitance group comprises 8 electric capacity.

4. the inverter power module described in claim 1, it is characterised in that:

In described capacitance group, the bottom of each electric capacity is screwed on described capacitance bracket.

5. the inverter power module described in claim 1, it is characterised in that:

Described exchange output copper bar is fixed in described frame by insulated column.

6. according to arbitrary described inverter power module of Claims 1 to 5, it is characterised in that:

Each described electric capacity back-off in described capacitance group is fixed on the outside of described frame.

7. the inverter power module described in claim 6, it is characterised in that:

Electric capacity in described capacitance group is divided into two groups, respectively upper row's capacitance group and lower row's capacitance group；Described upper row's capacitance group and described lower row's capacitance group in the vertical direction misplace half electric capacity width fixed installation.