Water-cooled inverter unit device

Abstract

The utility model relates to a water-cooling inverter unit device, which comprises a unit shell, a water-cooling radiator, an IGBT (Insulated Gate Bipolar Translator) module, a filter capacitor, a unit control panel, an input terminal and an output terminal, and a water inlet joint and a water outlet joint are arranged on the water-cooling radiator; the unit is characterized in that the water-cooled radiator is arranged at the bottom of the unit shell, the IGBT module is fixed on the upper surface of the water-cooled radiator, the large laminated busbar and the small laminated busbar are arranged above the IGBT module, the filter capacitor is fixed above the small laminated busbar, and the unit control panel is fixed above the large laminated busbar and the filter capacitor. According to the water-cooling inverter unit device, heat generated in the working process of the IGBT module is taken away by circulating water in the water-cooling radiator, so that stable working of the IGBT module is ensured; due to the distribution mode, the formed water-cooling inverter unit device is very compact in structure, and has the advantages of being small in size, modularized and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to a water-cooled inverter unit device, and more specifically, to a water-cooled inverter unit device which is small in size, modularized and easy to maintain. Background Art

[0002] Since DC / AC technology can realize the conversion of direct current to alternating current, it can convert the direct current of batteries and solar energy into high-quality alternating current. Therefore, DC / AC technology is widely used in energy storage systems and photovoltaic power generation systems. With the development of DC / AC technology, the demand for higher-power conversion units has gradually increased, and the air-cooling heat dissipation method has gradually failed to meet the heat dissipation requirements of high-power DC / AC inverter units; the water-cooling heat dissipation method has the advantages of high thermal conductivity and good heat dissipation effect. Therefore, if the water-cooling heat dissipation method can be applied to the heat dissipation of DC / AC inverter units, it will be a better way to handle the heat dissipation of components such as IGBTs. Small size, modularization, and easy maintenance are the goals pursued by products such as water-cooled units, so it is very necessary to design such a DC / AC inverter unit. Summary of the invention

[0003] In order to overcome the disadvantages of the above technical problems, the utility model provides a water-cooled inverter unit device.

[0004] The utility model discloses a water-cooled inverter unit device, comprising a unit housing, a water-cooled radiator, an IGBT module, a filter capacitor, a unit control board, an input terminal and an output terminal, wherein the input terminal is arranged through the side wall of the unit housing, and the water-cooled radiator is provided with a water inlet joint and a water outlet joint which are communicated with the internal heat dissipation cavity thereof; the utility model is characterized in that: the water-cooled radiator is arranged at the bottom of the unit housing, the IGBT module is fixed on the upper surface of the water-cooled radiator, a large stacked busbar and a small stacked busbar are arranged in sequence from front to back above the IGBT module, the filter capacitor is fixed above the small stacked busbar, and the unit control board is fixed above the large stacked busbar and the filter capacitor; the large stacked busbar is connected to the input terminal, the filter capacitor and the input end of the IGBT module, and the output end of the IGBT module is connected to the output terminal via the small stacked busbar.

[0005] The utility model discloses a water-cooled inverter unit device, wherein the rear end of the unit housing is a rear panel fixedly connected thereto via bolts, and two primary plug-ins are arranged on the rear panel, and the primary plug-ins are connected to the output terminals.

[0006] The utility model discloses a water-cooled inverter unit device, wherein a unit control board mounting plate is arranged below the unit control board, two fixing supports are arranged below the unit control board mounting plate, the fixing supports are fixed on the unit shell, the unit control board mounting plate is fixed on the fixing supports, and the unit control board is fixed on the unit control board mounting plate via insulating spacer columns.

[0007] The utility model provides a water-cooled inverter unit device, wherein the upper surface of the unit housing is an upper cover plate fixedly connected thereto, and the upper cover plate is evenly provided with air holes for heat dissipation of electronic components on the unit control board.

[0008] In the water-cooled inverter unit device of the utility model, two handles for facilitating taking and placing the water-cooled inverter unit device are arranged on the front end surface of the unit shell.

[0009] In the water-cooled inverter unit device of the utility model, a capacitor fixing bracket for fixing and supporting the filter capacitor is fixed in the unit shell.

[0010] The beneficial effects of the utility model are as follows: the water-cooled inverter unit device of the utility model is provided with a unit housing, a water-cooled radiator, an IGBT module, a filter capacitor, a unit control board and input and output terminals, the water-cooled radiator is arranged at the bottom of the unit housing, the IGBT module is fixed on the upper surface of the water-cooled radiator, and the heat generated during the operation of the IGBT module is taken away by the circulating water in the water-cooled radiator, thereby ensuring the stable operation of the IGBT module; a large stacked busbar and a small stacked busbar are arranged from front to back above the IGBT module, the filter capacitor is arranged above the small stacked busbar, and the unit control board is arranged above the large stacked busbar and the filter capacitor. This distribution form makes the formed water-cooled inverter unit device structure very compact, and has the advantages of small size, modularization and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the water-cooled inverter unit device of the utility model;

[0012] Figure 2 This is a front view of the water-cooled inverter unit device of the utility model with the unit housing removed;

[0013] Figure 3 It is a rear view of the water-cooled inverter unit device of the utility model;

[0014] Figure 4 This is a front view of the water-cooled inverter unit device of the utility model with the unit housing removed;

[0015] Figure 5 It is a top view of the water-cooled inverter unit device of the utility model;

[0016] Figure 6 The top view of the water-cooled inverter unit device of the utility model with the unit housing removed;

[0017] Figure 7 It is a right side view of the water-cooled inverter unit device of the utility model;

[0018] Figure 8 The right side view of the water-cooled inverter unit device of the utility model with the unit housing removed;

[0019] Fig. 9 , Fig.10 All of them are three-dimensional diagrams of the water-cooled inverter unit device of the utility model with the unit housing removed;

[0020] Fig.11 The utility model is a circuit diagram of a water-cooled inverter unit device.

[0021] In the figure: 1 unit housing, 2 water cooling radiator, 3 IGBT module, 4 filter capacitor, 5 unit control board, 6 input terminal, 7 output terminal, 8 large stacked busbar, 9 small stacked busbar, 10 water inlet connector, 11 water outlet connector, 12 handle, 13 rear panel, 14 primary plug-in, 15 current sensor, 16 upper cover, 17 vent, 18 unit control board mounting plate, 19 fixing support, 20 capacitor fixing bracket. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figures 1 to 10 As shown, the front view, the front view without the unit shell, the rear view, the rear view without the unit shell, the top view, the top view without the unit shell, the right view, the right view without the unit shell and the stereoscopic view of the water-cooled inverter unit device of the utility model are respectively given. The water-cooled inverter unit device shown is composed of a unit shell 1, a water-cooled radiator 2, an IGBT module 3, a filter capacitor 4, a unit control board 5, an input terminal 6 and an output terminal 7. The unit shell 1 plays a fixing and supporting role, and the water-cooled radiator 2, the IGBT module 3, the filter capacitor 4, the unit control board 5 and the output terminal 7 are all arranged in the internal cavity of the unit shell 1.

[0024] The input terminal 6 shown is arranged through the side wall of the unit housing 1, the water cooling radiator 2 is arranged at the bottom of the internal cavity of the unit housing 1, the IGBT module 3 is fixed on the upper surface of the water cooling radiator 2, and the water cooling radiator 2 is provided with a water inlet joint 10 and a water outlet joint 11 which are communicated with the internal heat dissipation cavity thereof. Circulating cooling water is introduced into the water cooling radiator 2 through the water inlet joint 10 and the water outlet joint 11 so as to take away the heat generated during the operation of the IGBT module 3 and ensure the stable operation of the IGBT module 3.

[0025] A large stacked busbar 8 and a small stacked busbar 9 are arranged in sequence from front to back above the IGBT module 3. A filter capacitor 4 is arranged above the small stacked busbar 9. The filter capacitor 4 is fixed on a capacitor fixing bracket 20. The capacitor fixing bracket 20 is fixed on the unit housing 1 to achieve stable support for the filter capacitor 4. The unit control board 5 is arranged above the large stacked busbar 8 and the filter capacitor 4. The unit control board 5 is used to control the operation of the water-cooled inverter unit device. A unit control board mounting plate 18 is arranged below the unit control board 5. Two fixing supports 19 are arranged below the unit control board mounting plate 18. The fixing support 19 is fixed on the unit housing 1. The unit control board mounting plate 18 is fixed on the fixing support 19. The unit control board 5 is fixed on the unit control board mounting plate 18 via insulating spacers.

[0026] The filter capacitor 4 is connected to the input end of the IGBT module 3 via a large stacked busbar 8, which can reduce the generation of stray inductance; the input terminal 6 is also connected to the large stacked busbar 8. The output terminal 7 is connected to the output end of the IGBT module 3, and a current sensor 15 is arranged on the periphery of the output terminal 7 to detect the output current signal of the IGBT module 3. The rear side of the unit housing 1 is a rear panel 13 connected to it by bolts, and two primary plug-ins 14 are arranged on the rear panel 13, and the primary plug-ins 14 are connected to the output terminal 7; the plug-in method of the primary plug-in 14 facilitates the output of the water-cooled inverter unit device.

[0027] The front end surface of the unit housing 1 is provided with two handles 12 for taking and placing the unit housing 1. Above the unit housing 1 is an upper cover plate 16 fixedly connected thereto, and vent holes 17 are evenly provided on the upper cover plate 16. Since the unit control board 5 is arranged close to the upper cover plate 16, the heat generated during the operation of the electronic components in the unit control board 5 can be dissipated through the vent holes 17 on the upper cover plate 16 to ensure the stable operation of the unit control board 5.

[0028] like Fig.11 As shown, a circuit schematic diagram of the water-cooled inverter unit device of the utility model is given. The DC power output by the battery or solar energy is filtered by the filter capacitor 4 and input to the input end of the IGBT module 3. By controlling the on-off of the IGBT device in the IGBT module 3, the required AC power is generated and input to the power grid. It uses a cascade of multiple water-cooled inverter unit devices to generate three-phase AC power.

Claims

1. A water-cooled inverter unit device, comprising a unit housing (1), a water-cooled radiator (2), an IGBT module (3), a filter capacitor (4), a unit control board (5), an input terminal (6) and an output terminal (7), wherein the input terminal is arranged through a side wall of the unit housing, and the water-cooled radiator is provided with a water inlet joint (10) and a water outlet joint (11) which are in communication with an internal heat dissipation cavity thereof; the characteristics are as follows: The water-cooled radiator is arranged at the bottom of the unit housing, the IGBT module is fixed on the upper surface of the water-cooled radiator, a large stacked busbar (8) and a small stacked busbar (9) are arranged in sequence from front to back above the IGBT module, the filter capacitor is fixed above the small stacked busbar, and the unit control board is fixed above the large stacked busbar and the filter capacitor; the large stacked busbar is connected to the input terminal, the filter capacitor and the input end of the IGBT module, and the output end of the IGBT module is connected to the output terminal via the small stacked busbar.

2. The water-cooled inverter unit device according to claim 1, characterized in that: The rear end of the unit housing (1) is a rear panel (13) fixedly connected thereto via bolts, and two primary plug-ins (14) are arranged on the rear panel, and the primary plug-ins are connected to the output terminals (7).

3. The water-cooled inverter unit device according to claim 1 or 2, characterized in that: A unit control board mounting plate (18) is provided below the unit control board (5), two fixing supports (19) are provided below the unit control board mounting plate, the fixing supports are fixed to the unit housing (1), the unit control board mounting plate is fixed to the fixing supports, and the unit control board is fixed to the unit control board mounting plate via insulating spacer columns.

4. The water-cooled inverter unit device according to claim 1 or 2, characterized in that: The upper surface of the unit housing (1) is an upper cover plate (16) fixedly connected thereto, and the upper cover plate is evenly provided with air holes (17) for facilitating heat dissipation of electronic components on the unit control board (5).

5. The water-cooled inverter unit device according to claim 1 or 2, characterized in that: Two handles (12) are provided on the front end surface of the unit housing (1) for facilitating taking and placing the water-cooled inverter unit device.

6. The water-cooled inverter unit device according to claim 1 or 2, characterized in that: A capacitor fixing bracket (20) for fixing and supporting the filter capacitor (4) is fixed in the unit housing (1).

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