Efficient forced heat dissipation structure of energy storage control cabinet

Abstract

The application discloses a high-efficiency forced heat dissipation structure of an energy storage control cabinet, which comprises a cabinet body and a door, the cabinet body is divided into a first chamber and a second chamber along a height direction, the door is rotatably hinged to the front face of the cabinet body, the first chamber is provided with a plurality of storage positions for storing PCS converters along the height direction, a plurality of heat dissipation holes are formed in the front face of the PCS converter, and a heat dissipation fan is mounted on the back face of the PCS converter; the second chamber serves as a power distribution cabin; an air inlet assembly is arranged on the door, an air outlet assembly is arranged on the back face of the cabinet body, an auxiliary air inlet assembly is arranged on at least one side face of the cabinet body and close to the door, and an auxiliary air outlet assembly is arranged on at least one side face of the cabinet body and close to the back face of the cabinet body; the high-efficiency forced heat dissipation structure realizes collaborative air circulation in the horizontal direction and the vertical direction, significantly increases the air circulation in the cabinet body per unit time, and greatly improves the heat dissipation efficiency, thereby guaranteeing the reliability of the control cabinet during high-power operation.

Description

Technical Field

[0001] This application belongs to the field of industrial and commercial energy storage technology, and in particular relates to a high-efficiency forced heat dissipation structure for an energy storage control cabinet. Background Technology

[0002] In the field of energy storage, battery energy storage has attracted increasing attention due to its flexibility, high reliability and controllability, and high energy density. Energy storage systems typically consist of a battery cabinet and a control cabinet. The battery cabinet, as an energy storage unit, houses multiple battery packs, while the control cabinet, as a power conversion unit, controls the charging and discharging of the battery packs.

[0003] Currently, control cabinets used in energy storage systems require thermal management. Existing thermal management methods typically involve installing air inlets on the cabinet door and air outlets on the back panel. The PCS converter's built-in fan draws air through the inlets and exhausts it through the outlets for cooling. This single-door, back-panel cooling method results in a short airflow path, numerous cooling dead zones, and insufficient heat dissipation efficiency under high-power operation. Specifically, when the PCS converter in the energy storage control cabinet is operating at full load, a single unit generates a significant amount of heat. However, the traditional single-duct design provides limited airflow, leading to a significant temperature rise inside the cabinet, exceeding the limits specified in relevant standards. This excessive temperature triggers the PCS converter's protection mechanism, causing it to enter derating mode, resulting in a significant decrease in overall system efficiency. Utility Model Content

[0004] The purpose of this application is to provide a highly efficient forced heat dissipation structure for an energy storage control cabinet, so as to solve the problem of poor heat dissipation in existing energy storage control cabinets.

[0005] To achieve this objective, the following technical solution is adopted in this application:

[0006] This application proposes a high-efficiency forced heat dissipation structure for an energy storage control cabinet, comprising a cabinet body and a door. The cabinet body is divided into a first chamber and a second chamber along its height direction. The first chamber is located above the second chamber. A first side of the door is rotatably hinged to the front of the cabinet body, wherein:

[0007] The first chamber has multiple storage positions along the height direction, and each storage position stores a PCS converter. The front of the PCS converter has several heat dissipation holes, and the back of the PCS converter is equipped with a cooling fan.

[0008] The second chamber serves as a power distribution compartment and is equipped with a junction box, an AC circuit breaker, and copper busbars.

[0009] An air inlet assembly is provided on the door, an air outlet assembly is provided on the back of the cabinet, an auxiliary air inlet assembly is provided on at least one side of the cabinet near the door, and an auxiliary air outlet assembly is provided on at least one side of the cabinet near the back of the cabinet, so as to form a three-dimensional air duct in the cabinet.

[0010] The cooling fan of the PCS converter operates, thereby introducing air into the cabinet from the air inlet assembly and the auxiliary air inlet assembly and discharging it through the air outlet assembly and the auxiliary air outlet assembly, so as to form a coordinated airflow circulation in the horizontal and vertical directions.

[0011] Optionally, two auxiliary air inlet assemblies are symmetrically arranged on two sides of the cabinet near the door, and two auxiliary air outlet assemblies are symmetrically arranged on two sides of the cabinet near the back of the cabinet.

[0012] Optionally, both the auxiliary air inlet assembly and the auxiliary air outlet assembly extend along the height direction, and the length of the auxiliary air inlet assembly and the auxiliary air outlet assembly extends to the region above the top of the second chamber.

[0013] Optionally, the cabinet is equipped with sheet metal parts extending along the height direction, the sheet metal parts being used at least for installing and / or isolating functional components, and the sheet metal parts having multiple ventilation holes.

[0014] Optionally, the air inlet assembly includes an upper air inlet assembly and a lower air inlet assembly spaced apart along the height direction, with the upper air inlet assembly and the lower air inlet assembly protruding towards the back of the cabinet as a whole.

[0015] Optionally, the upper air inlet assembly and the lower air inlet assembly have the same structure, wherein:

[0016] The lower air intake assembly includes a first frame, on which louvers, filter cotton, and inner lining mesh are sequentially installed from the outside to the inside. The first frame is detachably installed at the opening of the door by fixing screws.

[0017] Optionally, the auxiliary air inlet assembly, the auxiliary air outlet assembly, and the air outlet assembly have the same structure, wherein:

[0018] The auxiliary air intake assembly includes an outer mesh plate, a filter cotton, and a protective inner mesh. The outer mesh plate is installed on the outside of the opening on the side of the cabinet by fixing screws, and the inner mesh plate is installed on the inside of the opening on the side of the cabinet by fixing screws. The filter cotton is installed between the outer mesh plate and the inner mesh plate.

[0019] Optionally, each of the storage positions is provided with a support member on both sides along its width direction. The support member is detachably fixed to the cabinet. The two support members are configured to support the bottom of the two sides of the PCS converter along its length direction.

[0020] Optionally, the PCS converter has connecting portions on both sides of its front side along its width direction. The connecting portions have connecting holes, and the cabinet has threaded holes. Each threaded hole corresponds to one connecting hole. Fixing screws pass through the connecting holes and are locked in the threaded holes to fix the PCS converter to the cabinet.

[0021] Optionally, the three-dimensional air duct forms a coordinated airflow through the door, at least one side of the cabinet, and the back of the cabinet.

[0022] The high-efficiency forced heat dissipation structure of the energy storage control cabinet proposed in this application has the following advantages:

[0023] 1) By adding auxiliary air inlet components and auxiliary air outlet components to the cabinet, a three-dimensional air duct system is formed, realizing coordinated airflow circulation in the horizontal and vertical directions, which significantly increases the amount of gas flowing in the cabinet per unit time, thereby greatly improving heat dissipation efficiency and ensuring the reliability of the control cabinet when operating at high power.

[0024] 2) By opening ventilation holes in the sheet metal parts in the cabinet, the obstruction of air by the sheet metal parts in the cabinet is reduced. Combined with the newly added double-sided auxiliary air inlet / outlet, a four-way three-dimensional air duct (door + double sides + back panel) is formed, which increases the air flow speed in the cabinet and further improves the heat dissipation efficiency.

[0025] 3) Both the upper and lower air inlet components protrude towards the back of the cabinet, which can quickly guide the airflow to the front of the PCS converter while ensuring normal air intake, reducing airflow loss and further improving heat dissipation efficiency; at the same time, it does not occupy the space outside the door, has a reasonable layout, and actively guides the airflow.

[0026] 4) The air inlet assembly includes an upper air inlet assembly and a lower air inlet assembly, which increases the air intake volume of the air inlet and also makes room for installing other components on the door. The upper and lower air inlet assemblies are aligned with the main heat source of the PCS converter for heat dissipation, and the auxiliary air inlet assembly supplements the heat dissipation in the dead zone area of ​​the airflow.

[0027] In summary, this invention upgrades the traditional unidirectional airflow of air cooling to multidirectional forced convection through a triple design of three-dimensional air duct, zoned coordination, and structural optimization, thus breaking through the heat dissipation bottleneck. At the same time, through modular and dustproof design, it replaces expensive thermal management components with mechanical structural optimization, achieving a balance between cost and performance in small and medium power energy storage systems. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the energy storage control cabinet provided in the embodiment of this application in the open state;

[0029] Figure 2 This is a front view of the energy storage control cabinet provided in the embodiment of this application in the open state;

[0030] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0031] Figure 4 This is a side view of the energy storage control cabinet provided in the embodiment of this application in the open state;

[0032] Figure 5 This is a cross-sectional schematic diagram of the air inlet assembly of the high-efficiency forced heat dissipation structure of the energy storage control cabinet provided in the embodiments of this application;

[0033] Figure 6 yes Figure 5 A magnified view of a section at point A in the middle;

[0034] Figure 7 This is a front view schematic diagram of the PCS converter with a high-efficiency forced heat dissipation structure for the energy storage control cabinet provided in the embodiments of this application. Detailed Implementation

[0035] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] This application proposes a highly efficient forced heat dissipation structure for an energy storage control cabinet. Please refer to [link / reference]. Figures 1 to 7As shown, the efficient forced heat dissipation structure of the energy storage control cabinet proposed in this application embodiment includes a cabinet body 10 and a door 20. The cabinet body 10 is divided into a first chamber 11 and a second chamber 12 along the height direction. The first chamber 11 is located above the second chamber 12. The first side of the door 20 is rotatably hinged to the front of the cabinet body 10. The first chamber 11 is provided with multiple storage positions 110 along the height direction. Each storage position 110 stores a PCS converter 30. Several heat dissipation holes 31 are opened on the front of the PCS converter 30, and a cooling fan is installed on the back of the PCS converter 30. The second chamber 12 serves as a distribution... The electrical compartment is equipped with a junction box 120, an AC side circuit breaker 121, and a copper busbar. An air inlet assembly 21 is provided on the door 20, and an air outlet assembly (not shown in the figure) is provided on the back of the cabinet 10. An auxiliary air inlet assembly 13 is provided on at least one side of the cabinet 10 near the door 20, and an auxiliary air outlet assembly 14 is provided on at least one side of the cabinet 10 near the back of the cabinet 10. The cooling fan of the PCS converter 30 operates, thereby introducing air into the cabinet 10 from the air inlet assembly 13 and the auxiliary air inlet assembly 14 and discharging it through the air outlet assembly 21 and the auxiliary air outlet assembly 14.

[0037] Specifically, the junction box 120 is an EMShub integrated system with a two-layer structure, including an upper-layer EMS / BMS communication gateway (RS485 / CAN dual interface) and a lower-layer UPS backup power supply (48V / 20Ah lithium iron phosphate). The AC side circuit breaker 121 adopts three-stage protection (overload / short circuit / ground fault), including an AC grid-connected switch and a DC switch. One end of the AC grid-connected switch is connected to the power grid, and the other end is connected to the AC terminal of the PCS equipment. One end of the DC switch is connected to the battery cabinet, and the other end is connected to the DC terminal of the PCS. The grid-connected switch is connected to the on / off button via a terminal block to control the connection between the power grid and the PCS AC terminal. The terminal block of the DC switch is linked to the DC on / off button to manage the connection between the battery pack and the PCS DC terminal.

[0038] Specifically, the power distribution compartment also adopts a drawer-type structure, with the rear interface connected to the first chamber 11 and the front interface configured with multiple functional modules; DC bus, copper busbar specification 125×10mm; AC busbar, pluggable copper busbar connector.

[0039] The efficient forced cooling structure of the energy storage control cabinet proposed in this application forms a three-dimensional air duct inside the cabinet 10 by setting an air inlet assembly 21, an air outlet assembly, an auxiliary air inlet assembly 13, and an auxiliary air outlet assembly 14 on the cabinet 10. This achieves coordinated airflow circulation in the horizontal and vertical directions, significantly increasing the amount of gas flowing through the cabinet per unit time, thereby greatly improving the heat dissipation efficiency and ensuring the reliability of the control cabinet when operating at high power.

[0040] In one implementation, two auxiliary air inlet assemblies 13 are symmetrically arranged on the two sides of the cabinet 10 near the door 20, and two auxiliary air outlet assemblies 14 are symmetrically arranged on the two sides of the cabinet 10 near the back of the cabinet 10.

[0041] It can be seen that by setting two auxiliary air inlet components 13 and two auxiliary air outlet components 14 on the two sides of the cabinet 10, a four-way three-dimensional air duct (door + double sides + back panel) is formed, which increases the air flow speed in the cabinet, further increases the amount of gas flowing in the cabinet 10 per unit time, and improves the heat dissipation efficiency.

[0042] In one embodiment, both the auxiliary air inlet assembly 13 and the auxiliary air outlet assembly 14 extend along the height direction, and the length of the auxiliary air inlet assembly 13 and the auxiliary air outlet assembly 14 extends to the region above the top of the second chamber 12.

[0043] As can be seen, by setting the auxiliary air inlet assembly 13 and the auxiliary air outlet assembly 14, the airflow used for heat dissipation mainly flows through the first chamber 11, which is prone to heat generation, so as to achieve rapid heat dissipation of the PCS converter 30 in the first chamber 11.

[0044] In one embodiment, a sheet metal part 15 extending along the height direction is installed inside the cabinet 10. The sheet metal part 15 is used at least for installing and / or isolating functional components, and a plurality of ventilation holes 16 are provided on the sheet metal part 15 at intervals along the height direction.

[0045] It can be seen that by opening ventilation holes 16 on the sheet metal parts 15 in the cabinet 10, the obstruction of gas by the sheet metal parts 15 in the cabinet 10 is reduced, the air flow speed in the cabinet 10 is increased, and the heat dissipation efficiency is further improved.

[0046] In one embodiment, the air inlet assembly 21 includes an upper air inlet assembly 210 and a lower air inlet assembly 211 spaced apart along the height direction, with the upper air inlet assembly 210 and the lower air inlet assembly 211 protruding toward the back of the cabinet 10.

[0047] As can be seen, both the upper air inlet assembly 210 and the lower air inlet assembly 211 protrude towards the back of the cabinet 10. Under the premise of ensuring normal air intake, they can quickly guide the airflow to the front of the PCS converter 30, reduce airflow loss, and further improve heat dissipation efficiency. At the same time, two air inlets are set at intervals along the height of the door 20, which increases the air intake volume of the air inlet and also makes room for installing other components on the door 20 without occupying the external space of the door 20. The layout is reasonable.

[0048] In one embodiment, the upper air inlet assembly 210 and the lower air inlet assembly 211 have the same structure. The lower air inlet assembly 211 includes a first frame 212, on which a louver 213, a filter cotton 214 and an inner lining mesh 215 are installed sequentially from the outside to the inside. The first frame 212 is detachably installed at the opening of the door 20 by fixing screws.

[0049] As can be seen, the upper air inlet assembly 210 and the lower air inlet assembly 211 adopt a louver structure design, which has a good ventilation effect and can also prevent rainwater from entering the cabinet 10.

[0050] In one implementation, the auxiliary air inlet assembly 13, the auxiliary air outlet assembly 14, and the air outlet assembly have the same structure. The auxiliary air inlet assembly 13 includes an outer mesh plate 130, a filter cotton, and an inner mesh plate 131. The outer mesh plate 130 is installed on the outside of the opening on the side of the cabinet 10 by fixing screws, and the inner mesh plate 131 is installed on the inside of the opening on the side of the cabinet 10 by fixing screws. The filter cotton is installed between the outer mesh plate 130 and the inner mesh plate 131.

[0051] In one implementation, each storage location 110 is provided with a support member 40 on both sides along its width direction. The support member 40 is detachably fixed to the cabinet 10. The two support members 40 are configured to support the bottom of both sides of the PCS converter 30 along its length direction.

[0052] Specifically, the support component 40 is a sheet metal part that extends along the length of the PCS converter 30 itself.

[0053] It can be seen that by setting two load-bearing components 40, stable and reliable support for the PCS converter 30 is achieved, and the overall structure is simple and low in cost.

[0054] In one implementation, the front of the PCS converter 30 is provided with connecting portions 32 on both sides along its width direction. Connecting portions 32 are provided with connecting holes 33. The cabinet 10 is provided with threaded holes, each threaded hole corresponding to a connecting hole 33. Fixing screws pass through the connecting holes 33 and are locked in the threaded holes to fix the PCS converter 30 to the cabinet 10.

[0055] In one implementation, the three-dimensional air duct forms a coordinated airflow through the door 20, at least one side of the cabinet 10, and the back of the cabinet 10.

[0056] In one implementation, handles 34 are provided on both sides of the front of the PCS converter 30 along its width direction. By providing handles 34, the operator can grasp the handles 34 during operation, making it convenient for the operator to access the PCS converter 30.

[0057] The above embodiments merely illustrate the basic principles and characteristics of this application. This application is not limited to the above examples. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency forced heat dissipation structure for an energy storage control cabinet, characterized in that, The energy storage control cabinet's high-efficiency forced heat dissipation structure includes a cabinet body and a door. The cabinet body is divided into a first chamber and a second chamber along its height. The first chamber is located above the second chamber. The first side of the door is rotatably hinged to the front of the cabinet body. Specifically: The first chamber has multiple storage positions along the height direction, and each storage position stores a PCS converter. The front of the PCS converter has several heat dissipation holes, and the back of the PCS converter is equipped with a cooling fan. The second chamber serves as a power distribution compartment and is equipped with a junction box, an AC circuit breaker, and copper busbars. An air inlet assembly is provided on the door, an air outlet assembly is provided on the back of the cabinet, an auxiliary air inlet assembly is provided on at least one side of the cabinet near the door, and an auxiliary air outlet assembly is provided on at least one side of the cabinet near the back of the cabinet, so as to form a three-dimensional air duct in the cabinet. The cooling fan of the PCS converter operates, thereby introducing air into the cabinet from the air inlet assembly and the auxiliary air inlet assembly, and discharging it through the air outlet assembly and the auxiliary air outlet assembly.

2. The high-efficiency forced heat dissipation structure of the energy storage control cabinet according to claim 1, characterized in that, Two auxiliary air inlet assemblies are symmetrically arranged on two sides of the cabinet near the door, and two auxiliary air outlet assemblies are symmetrically arranged on two sides of the cabinet near the back of the cabinet.

3. The high-efficiency forced heat dissipation structure of the energy storage control cabinet according to claim 1 or 2, characterized in that, Both the auxiliary air inlet assembly and the auxiliary air outlet assembly extend along the height direction, and the length of the auxiliary air inlet assembly and the auxiliary air outlet assembly extends to the region above the top of the second chamber.

4. The high-efficiency forced heat dissipation structure of the energy storage control cabinet according to claim 1, characterized in that, The cabinet is equipped with sheet metal parts that extend along the height direction. The sheet metal parts are used for at least the installation and / or isolation of functional components, and the sheet metal parts are provided with multiple ventilation holes.

5. The high-efficiency forced heat dissipation structure of the energy storage control cabinet according to claim 1, characterized in that, The air inlet assembly includes an upper air inlet assembly and a lower air inlet assembly spaced apart along the height direction, and the upper air inlet assembly and the lower air inlet assembly protrude toward the back of the cabinet as a whole.

6. The high-efficiency forced heat dissipation structure of the energy storage control cabinet according to claim 5, characterized in that, The upper air inlet assembly and the lower air inlet assembly have the same structure, wherein: The lower air intake assembly includes a first frame, on which louvers, filter cotton, and a protective inner mesh are installed sequentially from the outside to the inside. The first frame is detachably installed at the opening of the door by fixing screws.

7. The high-efficiency forced heat dissipation structure of the energy storage control cabinet according to claim 1, characterized in that, The auxiliary air inlet assembly, the auxiliary air outlet assembly, and the air outlet assembly have the same structure, wherein: The auxiliary air intake assembly includes an outer mesh plate, a filter cotton, and an inner mesh plate. The outer mesh plate is installed on the outside of the opening on the side of the cabinet by fixing screws, and the inner mesh plate is installed on the inside of the opening on the side of the cabinet by fixing screws. The filter cotton is installed between the outer mesh plate and the inner mesh plate.

8. The high-efficiency forced heat dissipation structure of the energy storage control cabinet according to claim 1, characterized in that, Each of the storage positions is provided with a support member on both sides along its width direction. The support member is detachably fixed to the cabinet. The two support members are configured to support the bottom of the two sides of the PCS converter along its length direction.

9. The high-efficiency forced heat dissipation structure of the energy storage control cabinet according to claim 1, characterized in that, The PCS converter has connection parts on both sides along its width direction on its front side. The connection parts have connection holes. The cabinet has threaded holes. Each threaded hole corresponds to one connection hole. Fixing screws pass through the connection holes and are locked in the threaded holes to fix the PCS converter to the cabinet.

10. The high-efficiency forced heat dissipation structure of the energy storage control cabinet according to claim 1, characterized in that, The three-dimensional air duct forms a coordinated airflow through the door, at least one side of the cabinet, and the back of the cabinet.

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