Auxiliary heat exchange structure of energy storage converter

Abstract

The utility model relates to the technical field of heat dissipation of energy storage converters, in particular to an auxiliary heat exchange structure of an energy storage converter, which comprises a casing internally provided with an upper casing and a lower casing. A heat dissipation module is arranged in the lower shell, the heat dissipation module comprises an auxiliary heat exchanger and a fan assembly, and the fan assembly is used for cooling the auxiliary heat exchanger; an element to be cooled and an internal circulation fan are arranged in the upper shell, and the internal circulation fan is connected with the auxiliary heat exchanger. The interior of the shell is divided into the upper shell and the lower shell, namely the shell is divided into two layers of spaces, the overall size of the energy storage converter is saved, and the heat dissipation module is arranged on the lower shell, so that heat dissipation is carried out on elements to be subjected to heat dissipation, the temperature of the energy storage converter is reduced, and the service life of the energy storage converter is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage converter heat dissipation, in particular to an auxiliary heat exchange structure for an energy storage converter. Background Technique

[0002] The energy storage system realizes the energy conversion between the energy storage battery and the power grid through the energy storage converter. The energy storage converter can complete the bidirectional energy flow between the energy storage battery and the power grid, and has multiple working modes, such as grid-connected charging, grid-connected discharging, off-grid charging, off-grid discharging, active input / output, reactive input / output, etc.

[0003] Due to the existence of harsh environments, energy storage converter modules with higher protection levels need to be used. The power supply module, common mode inductor, differential mode inductor and control chip in the energy storage converter module need to work continuously for a long time. During the long-term working process, heat will be continuously generated. If the air in the module cannot be effectively cooled, the continuous increase in temperature will affect the working efficiency of the devices in the module and even affect the service life.

[0004] Therefore, it is necessary to provide an auxiliary heat exchange structure for an energy storage converter to solve the above technical problems. Content of the Utility Model

[0005] In view of the above technical problems, the utility model provides an auxiliary heat exchange structure for an energy storage converter.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] An auxiliary heat exchange structure for an energy storage converter, including a casing, the interior of the casing includes an upper casing and a lower casing; a heat dissipation module is arranged in the lower casing, and the heat dissipation module includes an auxiliary heat exchanger and a fan assembly, and the fan assembly is used to cool the auxiliary heat exchanger; an element to be cooled and an internal circulation fan are arranged in the upper casing, and the internal circulation fan is connected to the auxiliary heat exchanger.

[0008] Compared with the prior art, the utility model has the following technical effects:

[0009] By dividing the casing into an upper casing and a lower casing, that is, dividing it into two layers of space, the overall volume of the energy storage converter is saved. By arranging a heat dissipation module in the lower casing, the element to be cooled is cooled, the temperature of the energy storage converter is reduced, and the service life of the energy storage converter is improved.

[0010] On the basis of the above technical solutions, the following improvements can be made to the above technical solutions:

[0011] Further, the auxiliary heat exchanger includes heat exchange fins, a corrugated tube, a first air duct plug, and a second air duct plug; both the first air duct plug and the second air duct plug are provided with communication ports, both ends of the corrugated tube are respectively communicated with the communication port of the first air duct plug and the communication port of the second air duct plug, and a plurality of heat exchange fins are arranged between adjacent corrugated tubes.

[0012] The beneficial effect of adopting the above further technical solution is that an internal circulation fan is arranged at the communication port of the first air duct plug, and the air inside the upper housing is passed through the auxiliary heat exchanger at a high speed and a large flow rate, quickly transferring the heat to the surface of the corrugated tube. The heat is conducted to the heat exchange fins through contact, and finally cooled by the fan assembly, and taken out to the upper housing through the first air duct plug to meet the auxiliary heat dissipation requirement.

[0013] Further, the fan assembly includes a plurality of parallel-connected fans, which are located on one side of the auxiliary heat exchanger.

[0014] The beneficial effect of adopting the above further technical solution is that a plurality of parallel-connected fans are arranged, with a uniform and reasonable structural distribution, and synchronous control and variable frequency speed regulation are carried out simultaneously; the plurality of parallel-connected fans are located on one side of the auxiliary heat exchanger, and the heat on the heat exchange fins is cooled by the fan assembly, further improving the heat dissipation effect.

[0015] Further, it further includes a metal plate, and the metal plate is located between the upper housing and the lower housing.

[0016] The beneficial effect of adopting the above further technical solution is that the upper housing and the lower housing are supported by a closed metal plate in the middle, which separates the external air environment from the air environment inside the module, and can improve the protection level inside the module.

[0017] Further, the element to be heat-dissipated includes a power module, a common-mode inductor, a differential-mode inductor, and a control chip.

[0018] Further, the housing includes a support housing and a front panel, a rear panel, a top cover plate, a bottom cover plate, a left side plate, and a right side plate that are detachably installed on the support housing. The front panel and the rear panel are arranged opposite to each other, the top cover plate and the bottom cover plate are arranged opposite to each other, and the left side plate and the right side plate are arranged opposite to each other.

[0019] The beneficial effect of adopting the above further technical solution is that different panels can be disassembled during the maintenance of different devices, improving the convenience and speed of maintenance.

[0020] Further, the front panel includes a detachable first front panel and a second front panel, the rear panel includes a detachable first rear panel and a second rear panel, wherein the first front panel is located above the second front panel, and the first rear panel is located above the second rear panel.

[0021] Further, a quick plug connector and a communication terminal for external communication are installed on the first front panel.

[0022] The beneficial effect of adopting the above further technical solution is that the front panel is provided with a storage energy quick plug connector and a communication terminal, which can be quickly incorporated into the main network for use. The above storage energy quick plug is insulated and waterproof and dustproof, effectively avoiding electric shock accidents.

[0023] Further, heat dissipation holes are provided on the second front panel and the second rear panel.

[0024] The beneficial effect of adopting the above further technical solution is that the setting of the heat dissipation holes directly increases the convection channel of the internal and external air, enabling the heat generated inside the device to be taken away more quickly through air convection.

[0025] Further, a handle is provided on the casing.

[0026] The beneficial effect of adopting the above further technical solution is that it is convenient to carry the energy storage converter, improving the convenience of use.

[0027] Further, the material of the casing is anti-rust aluminum alloy material, and a grounding wire for grounding is provided on the casing.

[0028] The beneficial effect of adopting the above further technical solution is that a safe electrical clearance is maintained inside the energy storage converter, and the casing is grounded through the grounding wire, effectively avoiding electric shock and casualty accidents. At the same time, the body of the energy storage converter is protected to meet higher anti-corrosion requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the auxiliary heat exchanger of the present utility model;

[0030] Figure 2 is a sectional view of the front view of the present utility model;

[0031] Figure 3 is a sectional view of the left view of the present utility model;

[0032] Figure 4 is an isometric structural diagram of the upper and lower two equal angles of the present utility model;

[0033] Figure 5 is the rear view of the present utility model.

[0034] In the drawings, the list of the component names represented by each reference numeral is as follows:

[0035] 1. Lower housing; 2. Upper housing; 11. Heat exchange fins; 12. Corrugated tube; 13. First air duct plug; 14. Second air duct plug; 21. Internal circulation fan; 22. Power module; 23. Control chip; 31. Fan assembly; 41. First front panel; 42. Second front panel; 51. Handle; 61. First rear panel; 62. Second rear panel. Detailed implementation manners

[0036] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0037] Refer to Figures 1 - 5 , this embodiment provides an auxiliary heat exchange structure for an energy storage converter, including a machine shell. The interior of the machine shell includes an upper housing 2 and a lower housing 1. A heat dissipation module is arranged in the lower housing 1, and the heat dissipation module includes an auxiliary heat exchanger and a fan assembly 31. The fan assembly 31 is used to cool the auxiliary heat exchanger. An element to be heat dissipated and an internal circulation fan 21 are arranged in the upper housing 2, and the internal circulation fan 21 is connected to the auxiliary heat exchanger.

[0038] By dividing the interior of the shell into an upper housing 2 and a lower housing 1, that is, into two layers of space, the overall volume of the energy storage converter is saved. By arranging a heat dissipation module in the lower housing 1, heat dissipation for the element to be heat dissipated is realized, the temperature of the energy storage converter is reduced, and the service life of the energy storage converter is prolonged. Among them, the elements to be heat dissipated include a power module 22, a common mode inductor, a differential mode inductor, and a control chip 23.

[0039] In this embodiment, refer to Figure 1 , the auxiliary heat exchanger includes heat exchange fins 11, a corrugated tube 12, a first air duct plug 13, and a second air duct plug 14. A plurality of corrugated tubes 12 arranged parallel to and spaced from each other are connected between the first air duct plug 13 and the second air duct plug 14. Both ends of each corrugated tube 12 are communicated with the first air duct plug 13 and the second air duct plug 14 respectively. A plurality of heat exchange fins 11 are arranged between adjacent corrugated tubes 12. Both the first air duct plug 13 and the second air duct plug 14 are provided with communication ports. Among them, the heat exchange fins 11 are formed by pultruded profiles or sheet metal bending, the corrugated tube 12 is formed by pultruded profiles, fins are evenly arranged in the corrugated tube 12, and both the first air duct plug 13 and the second air duct plug 14 are formed by die casting or sheet metal bending and welding. Specifically, the corrugated tube 12 and the heat exchange fins 11 are arranged in an up-and-down laminated manner and brazed, and then are brazed with the first air duct plug 13 and the second air duct plug 14 after being positioned through positioning holes, forming an auxiliary heat exchanger. The overall structure is compact and simple, with a relatively high heat dissipation efficiency. Using it for auxiliary heat dissipation of the energy storage converter module can improve the protection level of the module.

[0040] Refer toFigure 2 , an internal circulation fan 21 is provided at the communication port of the first air duct plug 13, which can enable the air inside the upper housing 2 to pass through the auxiliary heat exchanger at a relatively high speed and large flow rate, quickly transfer the heat to the surface of the mouth organ tube 12, and the heat is conducted to the heat exchange fins 11 through contact, and finally cooled by the fan assembly 31 and taken out into the upper housing 2 through the first air duct plug 13 to meet the auxiliary heat dissipation requirements.

[0041] In a specific embodiment, referring to Figure 3 , the fan assembly 31 includes a plurality of parallel-connected fans and is located on one side of the auxiliary heat exchanger. Setting a plurality of parallel-connected fans has a uniform and reasonable structural distribution, and synchronous control and variable frequency speed regulation are carried out at the same time; the plurality of parallel-connected fans are located on one side of the auxiliary heat exchanger, and the heat on the heat exchange fins 11 is cooled by the fan assembly 31 to improve the heat dissipation effect.

[0042] In this embodiment, the metal plate is located between the upper housing 2 and the lower housing 1. The upper housing 2 and the lower housing 1 are supported by a closed metal plate in the middle, which separates the external air environment from the air environment inside the module and can improve the protection level inside the module.

[0043] In this embodiment, referring to Figure 4 , the casing includes a support housing and a front panel, a rear panel, a top cover plate, a bottom cover plate, a left side plate and a right side plate that are detachably installed on the support housing. The front panel and the rear panel are arranged opposite to each other, the top cover plate and the bottom cover plate are arranged opposite to each other, and the left side plate and the right side plate are arranged opposite to each other. Different panels can be disassembled during the maintenance of different devices, improving the convenience and speed of maintenance.

[0044] The front panel includes a detachable first front panel 41 and a second front panel 42. Among them, the first front panel 41 is located above the second front panel 42; a quick plug connector and a communication terminal for external communication are installed on the first front panel 41. The first front panel 41 is provided with an energy storage quick plug connector and a communication terminal, which can be quickly incorporated into the main network for use. The above-mentioned energy storage quick plug is insulated and waterproof and dustproof, effectively avoiding electric shock accidents; the second front panel 42 is provided with heat dissipation holes for heat dissipation. Similarly, referring to Figure 5 , the rear panel includes a detachable first rear panel 61 and a second rear panel 62. The first rear panel 61 is located above the second rear panel 62. The second rear panel 62 is provided with heat dissipation holes, and the setting of the heat dissipation holes directly increases the convection channel of the internal and external air, so that the heat generated inside the device can be taken away more quickly through air convection.

[0045] Referring to Figure 4 , two handles 51 are provided on the front panel of the casing, which is convenient for carrying the energy storage inverter and improves the convenience of use.

[0046] In this embodiment, the material of the machine case is anti-rust aluminum alloy material, maintaining a safe electrical clearance inside the energy storage converter. A grounding wire for grounding is provided on the machine case, effectively avoiding electric shock casualties and protecting the body of the energy storage converter at the same time, meeting higher anti-corrosion requirements.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An auxiliary heat exchange structure of an energy storage converter, characterized in that: It includes a casing, which includes an upper shell and a lower shell; a heat dissipation module is arranged in the lower shell, and the heat dissipation module includes an auxiliary heat exchanger and a fan assembly, and the fan assembly is used to cool the auxiliary heat exchanger; a heat dissipation element and an internal circulation fan are arranged in the upper shell, and the internal circulation fan is connected to the auxiliary heat exchanger.

2. The auxiliary heat exchange structure of an energy storage converter according to claim 1, characterized in that: The auxiliary heat exchanger includes heat exchange fins, a harmonica tube, a first air duct plug and a second air duct plug; the first air duct plug and the second air duct plug are both provided with connecting ports, and the two ends of the harmonica tube are respectively connected with the connecting ports of the first air duct plug and the second air duct plug, and a plurality of heat exchange fins are arranged between adjacent harmonica tubes.

3. The auxiliary heat exchange structure of an energy storage converter according to claim 2, characterized in that: The fan assembly includes a plurality of fans connected in parallel and is located on one side of the auxiliary heat exchanger.

4. The auxiliary heat exchange structure of an energy storage converter according to claim 1, characterized in that: Also included is a metal plate located between the upper shell and the lower shell.

5. The auxiliary heat exchange structure of an energy storage converter according to claim 1, characterized in that: The casing includes a supporting shell and a front panel, a rear panel, a top cover plate, a bottom cover plate, a left side panel and a right side panel that are detachably mounted on the supporting shell, the front panel and the rear panel are arranged opposite to each other, the top cover plate and the bottom cover plate are arranged opposite to each other, and the left side panel and the right side panel are arranged opposite to each other.

6. The auxiliary heat exchange structure of an energy storage converter according to claim 5, characterized in that: The front panel includes a first front panel and a second front panel that are detachably connected, and the rear panel includes a first rear panel and a second rear panel that are detachably connected, wherein the first front panel is located above the second front panel, and the first rear panel is located above the second rear panel.

7. The auxiliary heat exchange structure of the energy storage converter according to claim 6, characterized in that: The first front panel is equipped with a quick-connect connector and a communication terminal for external communication.

8. The auxiliary heat exchange structure of an energy storage converter according to claim 6, characterized in that: The second front panel and the second rear panel are provided with heat dissipation holes.

9. The auxiliary heat exchange structure of an energy storage converter according to claim 1, characterized in that: The casing is provided with a handle.

10. The auxiliary heat exchange structure of an energy storage converter according to claim 1, characterized in that: The casing is an aluminum alloy casing, and a grounding wire for grounding is arranged on the casing.

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