Megawatt-level high-protection energy storage converter
By designing separate heat dissipation channels and fan systems in the energy storage converter, the problem of poor heat dissipation is solved, efficient heat dissipation is achieved, energy loss and failure rate are reduced, and equipment stability is improved.
Patent Information
- Application Number
- CN202422632755.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing high-protection energy storage converters have poor heat dissipation, resulting in high energy loss and failure rate.
A megawatt-class high-protection energy storage converter was designed. Separate heat dissipation channels were used to separate the power unit and reactor from other functional modules. Fans and heat dissipation channels were used to accelerate heat dissipation, and air flow was achieved through air inlets and outlets to reduce heat exchange.
It improves heat dissipation efficiency, reduces energy loss and failure rate, and enhances equipment stability and reliability.
Smart Images
Figure CN223402379U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of energy storage equipment, and more specifically, relates to a megawatt-level high-protection energy storage converter. Background Art
[0002] The shift toward renewable energy replacing fossil fuels, the advancement of the energy internet, and the growth of high-power loads such as electric vehicles are placing higher demands on the stability and security of power grids. Intelligent control and optimized coordination capabilities are required across power generation, transmission, and consumption. Energy storage technology offers potential advantages for flexible regulation of power systems, and is seeing widespread application in areas such as frequency regulation, peak shaving, demand response, microgrids, and multi-energy complementarity. With technological advancements and declining prices for energy storage devices, the commercial application of batteries, supercapacitors, and fuel cells is inevitable. High-protection power storage converters (PCSs) are the core component for achieving bidirectional energy flow in these applications, leading to increasing demand for these devices. Existing high-protection power storage converters consist of a cabinet and functional modules. Due to their poor heat dissipation, these converters suffer from high energy loss and failure rates. Utility Model Content
[0003] The purpose of the utility model is to provide a megawatt-class high-protection energy storage converter, aiming to solve the problem that the existing high-protection energy storage converter has poor heat dissipation effect, resulting in energy loss and high failure rate.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a megawatt-level high-protection energy storage converter, including: a cabinet, a power unit, an inductor, a DC functional module, an AC functional module, a heat dissipation channel and a fan; the interior of the cabinet is divided into an upper cavity and a lower cavity that are independent of each other, the fan is installed in the upper cavity, the top of the cabinet is provided with an air inlet connected to the upper cavity, and the bottom of the cabinet is provided with an air outlet connected to the lower cavity, the heat dissipation channel is located in the lower cavity and is arranged in a vertical direction, the upper end of the heat dissipation channel is connected to the fan, and the lower end of the heat dissipation channel is connected to the air outlet, the power unit and the inductor are both located inside the heat dissipation channel and arranged in a vertical direction, the DC functional module and the AC functional module are installed in the lower cavity and are located on the outside of the heat dissipation channel.
[0005] In a possible implementation, the air inlets are located at the front and rear sides of the cabinet.
[0006] In a possible implementation, a waterproof elbow is installed at the air inlet.
[0007] In a possible implementation, there are multiple fans.
[0008] In a possible implementation, a front cabinet door and a rear cabinet door are respectively installed on the front and rear sides of the cabinet body.
[0009] In a possible implementation, the DC function module is close to the front cabinet door, and the AC function module is close to the rear cabinet door.
[0010] In a possible implementation, a cooling air conditioner is installed on the cabinet, and the cooling air conditioner corresponds to the lower cavity.
[0011] In a possible implementation, the DC functional module includes a support capacitor, and the support capacitor is close to an exhaust port of the cooling air conditioner.
[0012] In one possible implementation, the AC function module includes a control unit, an AC disconnector, a black start unit, and an AC outgoing copper busbar; the control unit and the AC outgoing copper busbar are respectively located on the upper and lower sides of the AC disconnector, and the black start unit is located on one side of the AC disconnector in the horizontal direction.
[0013] In a possible implementation, a sealing strip is installed between the heat dissipation channel and the cabinet.
[0014] Compared with the prior art, the scheme shown in the embodiment of the present application is a megawatt-class high-protection energy storage converter of the utility model, which separates the power unit and reactor from other functional modules (DC functional module and AC functional module) through a heat dissipation channel. The outside air enters the upper cavity through the air inlet, and then the air is directed downward by the fan to dissipate heat to the power unit and reactor. The hot air after heat exchange is discharged through the air outlet at the bottom of the cabinet. The heat in the energy storage converter is mainly generated by the power unit and reactor. Therefore, by providing a fan and a heat dissipation channel, the heat dissipation efficiency of the power unit and reactor is accelerated, while the heat exchange between the power unit and reactor and other functional modules is reduced, thereby reducing the energy loss and failure rate of the functional modules caused by excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0016] Figure 1 A schematic diagram of the three-dimensional structure of a megawatt-class high-protection energy storage converter provided by an embodiment of the utility model Figure 1 ;
[0017] Figure 2 A schematic diagram of the three-dimensional structure of a megawatt-class high-protection energy storage converter provided by an embodiment of the utility model Figure 2 ;
[0018] Figure 3 A schematic diagram of the three-dimensional structure of a megawatt-class high-protection energy storage converter (with the waterproof elbow hidden) provided in an embodiment of the utility model Figure 3 ;
[0019] Figure 4 A schematic diagram of the three-dimensional structure of a megawatt-class high-protection energy storage converter (with the waterproof elbow hidden) provided in an embodiment of the utility model Figure 4 ;
[0020] Figure 5 A left side view of a megawatt-class high-protection energy storage converter (with the side cover plate hidden) provided in an embodiment of the present utility model;
[0021] Figure 6 This is a front view of a megawatt-class high-protection energy storage converter (with the front cabinet door hidden) provided in an embodiment of the present utility model.
[0022] In the figure: 1. Cabinet; 101. Upper cavity; 102. Lower cavity; 103. Air inlet; 104. Air outlet; 105. Waterproof elbow; 106. Front cabinet door; 107. Rear cabinet door; 108. Cooling air conditioner; 2. Power unit; 3. Reactor; 4. DC function module; 401. Support capacitor; 5. AC function module; 501. Control unit; 502. AC disconnect switch; 503. Black start unit; 504. AC outlet copper busbar; 6. Heat dissipation channel; 7. Fan. DETAILED DESCRIPTION
[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0024] Please also refer to Figures 1 to 5The present invention provides a megawatt-class high-protection energy storage converter. The megawatt-class high-protection energy storage converter comprises a cabinet 1, a power unit 2, a reactor 3, a DC function module 4, an AC function module 5, a heat dissipation channel 6, and a fan 7. The interior of the cabinet 1 is divided into an upper cavity 101 and a lower cavity 102, which are independent of each other. The fan 7 is installed in the upper cavity 101. The top of the cabinet 1 is provided with an air inlet 103 communicating with the upper cavity 101, and the bottom of the cabinet 1 is provided with an air outlet 104 communicating with the lower cavity 102. The heat dissipation channel 6 is located in the lower cavity 102 and is arranged in a vertical direction. The upper end of the heat dissipation channel 6 is connected to the fan 7, and the lower end of the heat dissipation channel 6 is connected to the air outlet 104. The power unit 2 and the reactor 3 are both located in the heat dissipation channel 6 and arranged in a vertical direction. The DC function module 4 and the AC function module 5 are installed in the lower cavity 102 and are located outside the heat dissipation channel 6.
[0025] Compared to the prior art, this embodiment provides a megawatt-class high-protection energy storage converter. The power unit 2 and reactor 3 are separated from other functional modules (the DC functional module 4 and the AC functional module 5) by a heat dissipation channel 6. External air enters the upper chamber 101 through the air inlet 103. The air is then dissipated downward by the fan 7 to dissipate heat from the power unit 2 and reactor 3. The hot air after heat exchange is discharged through the air outlet 104 at the bottom of the cabinet 1. Heat in the energy storage converter is primarily generated by the power unit 2 and reactor 3. Therefore, the provision of the fan 7 and heat dissipation channel 6 accelerates the heat dissipation efficiency of the power unit 2 and reactor 3, while simultaneously reducing heat exchange between the power unit 2 and reactor 3 and other functional modules, thereby reducing energy loss and failure rates caused by excessive temperatures in the functional modules.
[0026] In some embodiments, see Figure 3 and Figure 4 The air inlets 103 are located at the front and rear sides of the cabinet 1. In this embodiment, external air can enter the upper cavity from both the front and rear sides of the cabinet 1, thereby improving the heat dissipation effect on the power unit 2 and the reactor 3 by increasing the air intake volume.
[0027] In some embodiments, see Figure 1 and Figure 2 A waterproof elbow 105 is installed at the air inlet 103. In this embodiment, the waterproof elbow 105 is fixed to the outer wall of the cabinet 1. One end of the waterproof elbow 105 is open and corresponds to the air inlet 103, while the other end faces downward, thereby preventing rainwater from entering the cabinet 1 through the air inlet 103.
[0028] In some embodiments, see Figure 5, the number of fans 7 is multiple. In this embodiment, the number of fans 7 is multiple, and they are arranged along the front-to-back direction of the cabinet 1. Multiple fans 7 can increase the air flow rate in the cabinet 1.
[0029] In some embodiments, see Figure 1 and Figure 2 The cabinet 1 is provided with a front door 106 and a rear door 107, respectively, on the front and rear sides. In this embodiment, since the front and rear doors 106 and 107 are respectively provided on the front and rear sides of the cabinet 1, maintenance personnel can perform maintenance operations on the functional modules within the cabinet 1 from both sides. The front and rear doors 106 and 107 are used to seal the front and rear sides of the cabinet 1, while the side panels are used to seal the left and right sides of the cabinet 1.
[0030] In some embodiments, see Figure 1 、 Figure 2 and Figure 5 The DC function module 4 is located near the front cabinet door 106, and the AC function module 5 is located near the rear cabinet door 107. In this embodiment, since the DC function module 4 is located near the front cabinet door 106, maintenance personnel can directly open the front cabinet door 106 for maintenance; and since the AC function module 5 is located near the rear cabinet door 107, maintenance personnel can directly open the rear cabinet door 107 for maintenance.
[0031] In some embodiments, see Figure 1 and Figure 5 The cabinet 1 is provided with a cooling air conditioner 108, which corresponds to the lower cavity 102. In this embodiment, the cooling air conditioner 108 is fixedly mounted on the front cabinet door 106. The cooling air conditioner 108 cools the functional modules outside the heat dissipation channel 6 by passing cold air into the lower cavity 102.
[0032] In some embodiments, see Figure 5 The DC function module 4 includes a support capacitor 401, which is located near the exhaust port of the cooling air conditioner 108. In this embodiment, the support capacitor 401 is the component with the highest heat generation in the DC function module 4, so the support capacitor 401 is installed near the exhaust port of the cooling air conditioner 108, so that the support capacitor 401 can achieve better heat dissipation. The DC function module 4 includes a circuit breaker, a micro-breaker, a terminal block, a DC isolating switch, and a DC output copper busbar. The DC function module 4 is divided into three layers: upper, middle, and lower. The circuit breaker, micro-breaker, and terminal block are on the upper layer, the DC isolating switch is located in the middle layer, and the DC output copper busbar is located in the lower layer.
[0033] In some embodiments, see Figure 6The AC function module 5 includes a control unit 501, an AC disconnect switch 502, a black start unit 503, and an AC outgoing copper busbar 504. The control unit 501 and the AC outgoing copper busbar 504 are located on the upper and lower sides of the AC disconnect switch 502, respectively. The black start unit 503 is located on one side of the AC disconnect switch 502 in a horizontal direction. In this embodiment, the AC function module 5 is divided into three layers: upper, middle, and lower. The control unit 501 is located on the upper layer, the AC disconnect switch 502 and the black start unit 503 are located on the middle layer, and the AC outgoing copper busbar 504 is located on the lower layer. The control unit 501 includes a master control board, a driver board, and a slave control board. The black start unit 503 includes a power supply box, a rectifier bridge, a rectifier diode, and a fuse.
[0034] In some embodiments, a sealing strip is installed between the heat dissipation channel 6 and the cabinet 1. In this embodiment, the sealing strip can improve the sealing performance of the heat dissipation channel 6.
[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A megawatt-class high-protection energy storage converter, characterized in that: include: A cabinet, a power unit, an inductor, a DC functional module, an AC functional module, a heat dissipation channel and a fan; the interior of the cabinet is divided into an upper cavity and a lower cavity which are independent of each other, the fan is installed in the upper cavity, the top of the cabinet is provided with an air inlet connected to the upper cavity, the bottom of the cabinet is provided with an air outlet connected to the lower cavity, the heat dissipation channel is located in the lower cavity and is arranged in a vertical direction, the upper end of the heat dissipation channel is connected to the fan, and the lower end of the heat dissipation channel is connected to the air outlet, the power unit and the inductor are both located inside the heat dissipation channel and arranged in a vertical direction, the DC functional module and the AC functional module are installed in the lower cavity and are located on the outside of the heat dissipation channel.
2. A megawatt-class high-protection energy storage converter according to claim 1, characterized in that: The air inlets are located at the front and rear sides of the cabinet.
3. A megawatt-class high-protection energy storage converter according to claim 1, characterized in that: A waterproof elbow is installed at the air inlet.
4. A megawatt-class high-protection energy storage converter according to claim 1, characterized in that: There are multiple fans.
5. The megawatt-class high-protection energy storage converter according to claim 1, characterized in that: A front cabinet door and a rear cabinet door are respectively installed on the front and rear sides of the cabinet body.
6. A megawatt-class high-protection energy storage converter according to claim 5, characterized in that: The DC function module is close to the front cabinet door, and the AC function module is close to the rear cabinet door.
7. A megawatt-class high-protection energy storage converter according to claim 1, characterized in that: A cooling air conditioner is installed on the cabinet, and the cooling air conditioner corresponds to the lower cavity.
8. A megawatt-class high-protection energy storage converter according to claim 7, characterized in that: The DC functional module includes a supporting capacitor, and the supporting capacitor is close to the exhaust port of the cooling air conditioner.
9. A megawatt-class high-protection energy storage converter according to claim 1, characterized in that: The AC function module includes a control unit, an AC disconnector, a black start unit and an AC outgoing copper busbar; the control unit and the AC outgoing copper busbar are respectively located on the upper and lower sides of the AC disconnector, and the black start unit is located on one side of the AC disconnector in the horizontal direction.
10. The megawatt-class high-protection energy storage converter according to claim 1, characterized in that: A sealing strip is installed between the heat dissipation channel and the cabinet.