Energy storage converter cabinet

Abstract

The utility model provides an energy storage converter cabinet, which comprises a converter main body, a fan, a direct current side capacitor, a reactor and an IGBT module are arranged in the converter main body, air inlets are arranged on the front side and the lower side of the converter main body, and an air outlet exhaust duct is arranged on the back side of the converter main body; the fan is provided with a fan air duct, the direct-current side capacitor is provided with a direct-current side air duct, the reactor is provided with a reactor air duct, the IGBT module is provided with an IGBT module air duct, and the fan air duct longitudinally penetrates through the converter body and is communicated with the direct-current side air duct, the reactor air duct and the IGBT module air duct; the air inlet is communicated with the air outlet exhaust duct through the fan air duct, the direct current side air duct, the electric reactor air duct and the IGBT module air duct to form a heat dissipation channel. The beneficial effects of the utility model lie in that the fan is arranged to directly discharge heat generated by the key heating device, so that the heat is prevented from staying in the cabinet body for a long time, the energy storage converter can stably operate in the cabin body, and a powerful guarantee is provided for the whole energy storage system.

Description

Technical Field

[0001] The utility model relates to the field of converters, in particular to an energy storage converter cabinet. Background Art

[0002] As the core component of the energy storage system, the energy storage inverter can control the charging and discharging process of the energy storage system and perform AC-DC conversion. In the grid-connected mode, the energy storage inverter can not only rectify the AC power of the grid into DC power to charge the battery pack, but also invert the DC power of the energy storage system into AC power and send it back to the grid; in the off-grid mode, the energy storage inverter can provide partial local loads with electricity that meets the power quality requirements of the grid.

[0003] The energy storage converter is composed of a power conversion module, a DC circuit breaker, a transformer, a capacitor, a reactor, a control unit, etc., among which the reactor and the IGBT module are the main heat generating devices. Overheating inside the energy storage converter will greatly reduce the service life of the internal electronic components and affect the efficiency of the converter. Therefore, the energy storage converter must consider heat dissipation, and usually a heat dissipation net, a heat dissipation fan or a refrigeration device is set on the cabinet to dissipate the internal heat.

[0004] With the transformation of energy structure and the development of new energy industry, energy storage prefabricated cabins provide an energy storage solution suitable for a variety of occasions and purposes. The energy storage prefabricated cabin is mainly composed of energy storage inverter, energy storage battery pack, power distribution cabinet, battery management system, fire protection system and other parts, among which the main heat generating equipment is the energy storage inverter. The energy storage inverter is placed in the prefabricated cabin, and its heat will be dissipated into the cabin. The prefabricated cabin needs to perform secondary heat dissipation to ensure the stable operation of the equipment inside the cabin. This heat dissipation method will not only cause the temperature of the air inlet of the energy storage inverter to rise, affecting the heat dissipation efficiency of the energy storage inverter, but also increase the instability caused by the operation of other equipment in the prefabricated cabin under high temperature conditions. Utility Model Content

[0005] Aiming at the shortcomings of the existing technology, the problem of high temperature inside the energy storage converter cabin affecting the stable operation of the equipment is solved;

[0006] The utility model provides an energy storage converter cabinet, comprising a converter body, wherein a fan, a DC side capacitor, a reactor and an IGBT module are arranged inside the converter body, air inlets are arranged on the front and bottom of the converter body, and an air outlet exhaust duct is arranged on the back; the fan is arranged with a fan duct, the DC side capacitor is arranged with a DC side duct, the reactor is arranged with a reactor duct, and the IGBT module is arranged with an IGBT module duct, the fan duct longitudinally penetrates the converter body and connects with the DC side duct, the reactor duct and the IGBT module duct; the air inlet is connected with the air outlet exhaust duct through the fan duct, the DC side duct, the reactor duct and the IGBT module duct to form a heat dissipation passage.

[0007] Furthermore, the DC side capacitor and the reactor are arranged at the front side inside the converter body, and the fan and the IGBT module are arranged at the rear side inside the converter body.

[0008] Furthermore, the DC side capacitor is arranged above the reactor, the DC side air duct is distributed outside the DC side capacitor, and the reactor air duct is distributed outside the reactor.

[0009] Furthermore, the fan is arranged above the IGBT module, the fan air duct is distributed on the lower side of the fan, and the IGBT module air duct is distributed on the outer side of the IGBT module.

[0010] Furthermore, the filter capacitor and the AC circuit breaker are arranged side by side below the IGBT module, and the filter capacitor and the AC circuit breaker are provided with AC cables to connect to the power supply.

[0011] As a preferred solution, the air inlet is configured as a shutter style or a mesh style.

[0012] As a preferred solution, the air inlet and the air outlet exhaust duct are provided with filter cotton to prevent dust in the air from entering the cabinet.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model directly discharges the heat generated by the reactor, IGBT module and other key heat generating components by setting a fan. Once the heat is generated, it is quickly sucked into the air duct formed by the fan, avoiding the heat from being retained inside the cabinet for a long time, so that the energy storage converter can operate stably and efficiently in the cabin, providing a strong guarantee for the stable operation of the entire energy storage system.

[0015] 2. The utility model directly discharges heat to the outside of the energy storage prefabricated cabin through the exhaust duct. This method not only avoids the secondary heat dissipation process of heat inside the cabin, but also greatly improves the heat dissipation efficiency. The heat is quickly discharged outside the cabin, ensuring that the energy storage converter can maintain a low temperature during continuous operation, thereby extending the service life of the equipment and improving the reliability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a front cross-sectional view of the utility model.

[0019] Figure 3 It is a rear cross-sectional view of the utility model.

[0020] The reference numerals in the accompanying drawings are:

[0021] 1. Converter body; 2. Operation panel; 3. Front door air inlet; 4. AC wiring; 5. Exhaust duct; 6. Fan duct; 7. DC side duct; 8. Reactor duct; 9. DC side capacitor; 10. Reactor; 11. Fan; 12. IGBT module; 13. IGBT module duct; 14. Filter capacitor; 15. AC circuit breaker. DETAILED DESCRIPTION

[0022] To illustrate the features of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0023] Example:

[0024] refer to Figures 1 to 3 The present embodiment provides an energy storage converter cabinet, including a converter body 1, wherein a fan 11, a DC side capacitor 9, a reactor 10 and an IGBT module 12 are arranged inside the converter body 1. The specific internal structure of the present embodiment is as follows: the DC side capacitor 9 and the reactor 10 are arranged at the front side inside the converter body 1, and the DC side capacitor 9 is arranged above the reactor 10; the fan 11 and the IGBT module 12 are arranged at the rear side inside the converter body 1, and the fan 11 is arranged above the IGBT module 12; a filter capacitor 14 and an AC circuit breaker 15 are arranged side by side below the IGBT module 12, and the filter capacitor 14 and the AC circuit breaker 15 are arranged with an AC bus bar 4 to connect the power supply.

[0025] In the present embodiment, air inlets 3 are arranged on the front and bottom of the converter body 1, and an air outlet exhaust duct 5 is arranged on the back; inside the body, a fan duct 6 is arranged in the fan 11, a DC side duct 7 is arranged in the DC side capacitor 9, a reactor duct 8 is arranged in the reactor 10, and an IGBT module duct 13 is arranged in the IGBT module 12. The fan duct 6 runs through the converter body 1 longitudinally and connects the DC side duct 7, the reactor duct 8 and the IGBT module duct 13, forming a complete and interconnected duct system.

[0026] In this embodiment, the fan duct 6 is distributed on the lower side of the fan 11, the DC side duct 7 is distributed on the outside of the DC side capacitor 9, the IGBT module duct 13 is distributed on the outside of the IGBT module 12, and the reactor duct 8 is distributed on the outside of the reactor 10. The above-mentioned air inlet 3 passes through the fan duct 6, the DC side duct 7, the reactor duct 8, and the IGBT module duct 13 to connect the air outlet exhaust duct 5 to form a heat dissipation passage, and the air outlet exhaust duct 5 is connected to the exhaust port of the energy storage prefabricated cabin, wherein the reactor 10 and the IGBT module 12 are the main heating components of the energy storage converter, and the fan 11 extracts the generated heat to the fan duct 6, and the fan duct 6 runs through the converter cabinet vertically, so that the fan can extract the heat of the internal components of the entire converter. In this embodiment, there are 6 fans in total, which ensures the efficiency of heat transfer to the outside of the prefabricated cabin through the air outlet exhaust duct 5.

[0027] In addition, the present embodiment also configures the air inlet 3 as a shutter style or a mesh style, and provides filter cotton at the air inlet 3 and the air outlet exhaust duct 5 to prevent dust in the air from entering the cabinet, further improving the durability of the device.

[0028] The air outlet exhaust duct 5 transfers the heat emitted by the internal components of the energy storage inverter to the outside of the prefabricated cabin as a whole. The longitudinal length of the air outlet exhaust duct 5 is determined by the distance between the inverter and the prefabricated cabin. This design is suitable for the inverter cabinet placed in the energy storage prefabricated cabin, and can directly transfer the heat emitted by the inverter to the outside of the cabin, avoiding the secondary heat dissipation method of transferring the heat to the prefabricated cabin and then circulating the heat through the prefabricated cabin, thereby reducing the operating temperature of other equipment in the energy storage prefabricated cabin and ensuring the stable operation of each equipment.

[0029] The above embodiments and drawings are only used to illustrate the technical solution of the utility model, and are not intended to limit the utility model. The utility model is described in detail with reference to the preferred embodiments. It should be understood by ordinary technicians in this field that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the utility model do not deviate from the purpose of the utility model and should also fall within the scope of protection of the claims of the utility model. Other related technical structures not fully disclosed in the utility model are prior art in the field.

Claims

1. An energy storage converter cabinet, comprising a converter body (1), wherein a fan (11), a DC side capacitor (9), a reactor (10) and an IGBT module (12) are arranged inside the converter body (1). It is characterized in that The inverter body (1) is provided with air inlets (3) on the front and bottom, and an air outlet and exhaust duct (5) on the back; The fan (11) is provided with a fan duct (6), the DC side capacitor (9) is provided with a DC side duct (7), the reactor (10) is provided with a reactor duct (8), and the IGBT module (12) is provided with an IGBT module duct (13), the fan duct (6) longitudinally passes through the converter body (1) and is connected to the DC side duct (7), the reactor duct (8) and the IGBT module duct (13); The air inlet (3) is connected to the air outlet exhaust duct (5) through the fan duct (6), the DC side duct (7), the reactor duct (8), and the IGBT module duct (13) to form a heat dissipation passage.

2. The energy storage converter cabinet according to claim 1, characterized in that: The DC side capacitor (9) and the reactor (10) are arranged on the front side inside the converter body (1), and the fan (11) and the IGBT module (12) are arranged on the rear side inside the converter body (1).

3. The energy storage converter cabinet according to claim 2, characterized in that: The DC side capacitor (9) is arranged above the reactor (10), the DC side air duct (7) is distributed outside the DC side capacitor (9), and the reactor air duct (8) is distributed outside the reactor (10).

4. The energy storage converter cabinet according to claim 2, characterized in that: The fan (11) is arranged above the IGBT module (12), the fan air duct (6) is distributed on the lower side of the fan (11), and the IGBT module air duct (13) is distributed on the outer side of the IGBT module (12).

5. The energy storage converter cabinet according to claim 4, characterized in that: The filter capacitor (14) and the AC circuit breaker (15) are arranged side by side below the IGBT module (12), and the filter capacitor (14) and the AC circuit breaker (15) are provided with an AC bus cable (4) to connect to a power source.

6. The energy storage converter cabinet according to claim 1, characterized in that: The air inlet (3) is arranged in a shutter style or a mesh style.

7. The energy storage converter cabinet according to claim 1, characterized in that: The air inlet (3) and the air outlet exhaust duct (5) are provided with filter cotton to prevent dust in the air from entering the cabinet.

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