Energy storage inverter

Abstract

This application provides an energy storage inverter, relating to the field of inverter technology. The energy storage inverter includes a housing, circuit components, and a first heat sink. The circuit components include a circuit board, multiple inverter inductors, and multiple output inductors. The circuit board is disposed within the housing. The inverter inductors and output inductors are electrically connected to the circuit board and are located within the housing, at opposite ends of the housing. The first heat sink is disposed within the housing and at the bottom of the circuit board for heat dissipation. The energy storage inverter of this application improves heat dissipation performance.

Description

Technical Field

[0001] This application relates to the field of inverter technology, and more particularly to an energy storage inverter. Background Technology

[0002] Energy storage inverters can convert direct current (DC) to alternating current (AC) output, and vice versa. They are widely used in various scenarios that require the conversion of DC power (such as solar panels, battery packs, etc.) to AC power for grid connection, driving AC motors, and other applications.

[0003] Energy storage inverters typically include bidirectional inverter modules, energy storage battery management system interfaces, energy management system interfaces, and filter circuits. They have bidirectional energy conversion capabilities and can work efficiently with energy storage batteries and energy management systems to achieve energy storage, release, and optimized management.

[0004] However, the heat-generating components inside the energy storage inverter are concentrated in one area, causing the energy storage inverter to overheat severely during use. Utility Model Content

[0005] This application provides an energy storage inverter to improve the heat dissipation effect of the energy storage inverter.

[0006] This application provides an energy storage inverter, including:

[0007] case,

[0008] A circuit assembly includes a circuit board, multiple inverter inductors, and multiple output inductors. The circuit board is disposed within the housing. The inverter inductors and output inductors are electrically connected to the circuit board and are located within the housing, respectively at both ends of the housing.

[0009] A first heat sink is disposed inside the housing and located at the bottom of the circuit board to dissipate heat from the circuit board.

[0010] In one possible implementation, the first heat sink includes a first fan and a plurality of first heat sink fins, the first heat sink fins being spaced apart at the bottom of the circuit board component, and the first fan being connected to one end of the first heat sink fins to drive airflow near the first heat sink fins.

[0011] In one possible implementation, both the inverter inductor and the output inductor have a second heat dissipation fin at their bottoms, the second heat dissipation fin is parallel to the first heat dissipation fin, and the first heat dissipation component is located between the inverter inductor and the output inductor.

[0012] In one possible implementation, a first heat dissipation mesh is provided on the side wall of the housing, and the first heat dissipation mesh is located at both ends of the first heat dissipation fin along its length.

[0013] In one possible implementation, a second heat dissipation mesh is provided at the bottom of the housing, and the second heat dissipation mesh is correspondingly located below the inverter inductor and the output inductor.

[0014] In one possible implementation, the circuit board includes a DC input board, a driver board, a main board, and an AC output board that are electrically connected in sequence. The driver board is disposed at the bottom of the housing and connected to the housing. The first heat sink is disposed on the back of the driver board for heat dissipation. The DC input board and the AC output board are fixed side by side above the driver board, and the main board is stacked and fixed on the AC output board.

[0015] In one possible implementation, the circuit board further includes a motor relay board, a load relay board, and a power grid relay board. A mounting plate is provided inside the housing, and the mounting plate is located at one end of the drive board. The load relay board and the power grid relay board are arranged side by side on the mounting plate, and the motor relay board is positioned above the power grid relay board.

[0016] In one possible implementation, the energy storage inverter further includes a second heat sink connected to the housing and disposed between the drive plate and the mounting plate to drive the flow of gas within the housing.

[0017] In one possible implementation, the second heat sink includes a second fan and a third fan, both of which are connected to the housing. The second fan blows air toward the drive plate, and the third fan blows air toward the mounting plate, so that air circulates within the housing.

[0018] In one possible implementation, the third fan is tilted toward the power grid relay board so that the third fan drives airflow at the power grid relay board.

[0019] The energy storage inverter provided in this embodiment includes a circuit assembly comprising a circuit board, multiple inverter inductors, and multiple output inductors, all housed within a casing. The inverter inductors and output inductors are located at opposite ends of the circuit board and connected to it. A first heat sink is provided at the bottom of the circuit board to dissipate heat. Furthermore, by positioning the inverter inductors and output inductors at opposite ends of the circuit board, heat-generating components are dispersed, reducing heat concentration and preventing performance degradation or damage due to localized overheating. This improves the operational stability and reliability of the energy storage inverter and extends its service life. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] Figure 1 This application provides a structural schematic diagram of an energy storage inverter;

[0022] Figure 2 for Figure 1 A schematic diagram of the bottom structure of the energy storage inverter;

[0023] Figure 3 for Figure 1 A schematic diagram of the structure of the first heat sink component;

[0024] Figure 4 for Figure 1 A schematic diagram of the structure of the Zhongcun Energy Inverter after the top cover is opened;

[0025] Figure 5 for Figure 1 A schematic diagram of the structure of the circuit components;

[0026] Figure 6 for Figure 5 A schematic diagram of the circuit components from another angle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Shell; 110. Top cover; 111. First cover; 112. Second cover; 120. Intermediate mounting frame; 121. Protective plate; 130. Bottom shell; 131. First heat dissipation mesh; 132. Second heat dissipation mesh; 133. Mounting beam; 140. Mounting plate;

[0029] 200. Circuit components; 210. Circuit boards; 211. DC input board; 212. Driver board; 213. Main board; 214. AC output board; 2141. Common mode inductor; 215. Motor relay board; 216. Load relay board; 217. Power grid relay board; 218. Communication board; 219. Bus capacitor; 220. Inverter inductor; 230. Output inductor; 231. Photovoltaic inductor; 232. Battery inductor; 241. Data acquisition rod; 242. Circuit breaker; 243. Power switch; 244. Photovoltaic terminal; 245. Battery connection terminal; 246. Load connection terminal; 247. Motor connection terminal; 248. Power grid connection terminal; 249. Communication terminal;

[0030] 300, First heat sink; 310, First fan; 320, First heat sink fin; 330, Second heat sink fin;

[0031] 400, Second heat sink; 410, Second fan; 420, Third fan.

[0032] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0034] Energy storage inverters can convert direct current (DC) to alternating current (AC) output, and vice versa. They are widely used in various scenarios that require the conversion of DC power (such as solar panels, battery packs, etc.) to AC power for grid connection, driving AC motors, and other applications.

[0035] Energy storage inverters typically include bidirectional inverter modules, energy storage battery management system interfaces, energy management system interfaces, and filter circuits. They have bidirectional energy conversion capabilities and can work efficiently with energy storage batteries and energy management systems to achieve energy storage, release, and optimized management.

[0036] However, the heat-generating components inside the energy storage inverter are concentrated in one area, causing the energy storage inverter to overheat severely during use.

[0037] The energy storage inverter provided in this application comprises a circuit board, multiple inverter inductors, and multiple output inductors, all housed within a casing. The inverter inductors and output inductors are located at opposite ends of the circuit board and connected to it. A first heat sink is provided at the bottom of the circuit board to dissipate heat. Furthermore, by positioning the inverter inductors and output inductors at opposite ends of the circuit board, heat-generating components are dispersed, reducing heat concentration and preventing performance degradation or damage due to localized overheating. This improves the operational stability and reliability of the energy storage inverter and extends its service life.

[0038] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0039] This application provides an energy storage inverter, referring to... Figures 1 to 6 The energy storage inverter includes a housing 100, a circuit assembly 200, and a first heat sink 300.

[0040] The circuit assembly 200 includes a circuit board 210, a plurality of inverter inductors 220 and a plurality of output inductors 230. The circuit board 210 is disposed inside the housing 100. The inverter inductors 220 and the output inductors 230 are electrically connected to the circuit board 210, respectively. The inverter inductors 220 and the output inductors 230 are located inside the housing 100 and are located at both ends of the housing 100.

[0041] The first heat sink 300 is disposed inside the housing 100 and located at the bottom of the circuit board 210 for heat dissipation of the circuit board 210.

[0042] By adopting the above technical solution, the inverter inductor 220 and the output inductor 230 are located at both ends of the circuit board 210 and connected to the circuit board 210, thereby dispersing the heat-generating components and reducing heat concentration. This avoids the inverter from experiencing performance degradation or damage due to local overheating. Furthermore, the first heat sink 300 dissipates heat from the circuit board 210, improving the operational stability and reliability of the energy storage inverter and extending its service life.

[0043] For example, refer to Figure 1 The housing 100 includes a top cover 110, a middle mounting frame 120, and a bottom shell 130. The middle mounting frame 120 is fixedly connected to the bottom shell 130. The top cover 110 is detachably connected to the middle mounting frame 120 to close the middle mounting frame 120. All circuit components 200 are mounted within the middle mounting frame 120, and the first heat sink 300 is located within the bottom shell 130 and connected to the circuit board 210.

[0044] The bottom shell 130 is a rectangular frame to provide mounting space for the first heat sink 300. The intermediate mounting frame 120 and the bottom shell 130 can be integrally formed.

[0045] For example, handles are provided on both the bottom shell 130 and the intermediate mounting frame 120 to facilitate carrying and moving the energy storage inverter.

[0046] For example, the top cover 110 includes a first cover 111 and a second cover 112. The surface of the intermediate mounting frame 120 away from the bottom shell 130 is provided with a first mounting opening and a second mounting opening. The first mounting opening is used to mount structures such as circuit components 200, and the second mounting opening is used for connecting external wiring to the circuit components 200. The first cover 111 covers the first mounting opening to close it. The second cover 112 covers the second mounting opening to close it.

[0047] The first cover 111 and the second cover 112 are both connected to the intermediate mounting frame 120 in a detachable manner.

[0048] For example, the first cover 111 and the second cover 112 are hinged to the intermediate mounting frame 120 on the same side, and a locking member is provided on the other side. The locking member is used for detachable connection with the intermediate mounting frame 120. The locking member can be a snap-fit, sliding lock, or other structure.

[0049] For example, refer to Figure 4 A protective plate 121 is also provided on the intermediate mounting frame 120. The protective plate 121 is set on the second mounting opening to close the second mounting opening. The protective plate 121 is bolted to the intermediate mounting frame 120. The second cover 112 is placed on the protective plate 121.

[0050] In one possible implementation, refer to Figure 3 The first heat sink 300 includes a first fan 310 and a plurality of first heat sink fins 320. The first heat sink fins 320 are spaced apart at the bottom of the circuit board component 210. The first fan 310 is connected to one end of the first heat sink fins 320 to drive the airflow near the first heat sink fins 320.

[0051] The first heat dissipation fins 320 are evenly distributed at intervals along the length of the bottom shell 130. The first heat dissipation fins 320 are fixed to the bottom of the circuit board component 210. The first cooling fan is fixedly connected to the first heat dissipation fins 320.

[0052] The first heat sink fins 320 are spaced apart at the bottom of the circuit board component 210, increasing the heat dissipation area and providing a good heat dissipation foundation for the circuit board component 210. The first fan 310 is connected to one end of the first heat sink fins 320. When it starts, it drives the airflow near the first heat sink fins 320, creating air convection. This quickly blows away the heat originally attached to the heat sink fins, accelerating the heat dissipation speed and further improving the heat dissipation efficiency. This ensures that the heat generated by the inverter during operation can be dissipated in a timely manner, effectively maintaining the inverter's low-temperature operating environment, ensuring stable operation, and extending its service life.

[0053] In one possible implementation, refer to Figure 3 The bottom of both the inverter inductor 220 and the output inductor 230 is provided with a second heat sink 330, which is parallel to the first heat sink 320. The first heat sink 300 is located between the inverter inductor 220 and the output inductor 230.

[0054] For example, multiple mounting shells are fixedly connected within the intermediate mounting frame 120, and the inverter inductor 220 and output inductor 230 are installed in the mounting shells one by one. Second heat dissipation fins 330 are disposed on the outer surface of the mounting shells to dissipate heat from the inverter inductor 220 or output inductor 230 within the mounting shells. The second heat dissipation fins 330 are parallel to the first heat dissipation fins 320, allowing the airflow driven by the first fan 310 to quickly pass through the second heat dissipation fins 330, thereby assisting in heat dissipation and further improving the heat dissipation effect.

[0055] In one possible implementation, refer to Figure 2 The side wall of the housing 100 is provided with a first heat dissipation mesh 131, which is located at both ends of the first heat dissipation fin 320 in the length direction.

[0056] The first heat dissipation mesh 131 is disposed on the side wall of the housing 100 and located at both ends of the first heat dissipation fin 320 along its length; that is, the first heat dissipation mesh 131 is located at both ends of the housing 100 along its length. In the embodiments of this application, the first heat dissipation mesh 131 is disposed on the side wall of the bottom shell 130. This arrangement facilitates cooling of the heat dissipation fins by utilizing external airflow around the housing 100. When the first fan 310 operates, it can draw in external cold air through one end of the mesh, blow it toward the heat dissipation fins, and then exhaust hot air through the other end of the mesh, accelerating air convection, enhancing heat dissipation, effectively maintaining the inverter's low-temperature operation, and ensuring its stability and service life.

[0057] In one possible implementation, refer to Figure 2 The bottom of the housing 100 is provided with a second heat dissipation mesh 132, which is located below the inverter inductor 220 and the output inductor 230.

[0058] The second heat dissipation mesh 132 is located at the bottom of the base shell 130, directly below the inverter inductor 220 and output inductor 230. This allows cool air to enter the shell 100 from the bottom and directly impact these two heat-generating components. Hot air, due to buoyancy, rises and exits through the heat dissipation mesh on the side wall of the shell 100, accelerating air convection circulation. This further improves heat dissipation efficiency and more effectively reduces the temperature of the inverter inductor 220 and output inductor 230.

[0059] For example, a mounting beam 133 is also provided on the bottom outer wall of the bottom of the base shell 130. The mounting beam 133 is fixed to the bottom of the base shell 130 by bolts, so as to realize the installation and fixation of the energy storage inverter through the mounting beam 133. In addition, the mounting beam 133 separates the bottom of the base shell 130 from the mounting plane of the energy storage inverter, thereby realizing a gap between the bottom of the base shell 130 and the mounting plane to facilitate ventilation and heat dissipation of the second heat dissipation hole.

[0060] In one possible implementation, refer to Figure 5 and Figure 6 The circuit board 210 includes a DC input board 211, a driver board 212, a main board 213, and an AC output board 214 that are connected in sequence. The driver board 212 is located at the bottom of the housing 100 and connected to the housing 100. The first heat sink 300 is located on the back of the driver board 212 to dissipate heat from the driver board 212. The DC input board 211 and the AC output board 214 are fixed side by side on top of the driver board 212, and the main board 213 is stacked and fixed on the AC output board 214.

[0061] The driver board 212 is fixed on the intermediate mounting frame 120 and close to the bottom housing 130. The driver board 212 is a crucial component connecting the DC input and the main circuit processing section. It is primarily responsible for generating control signals to drive the power devices in the inverter, such as Insulated Gate Bipolar Transistors (IGBTs). These power devices are the core components for realizing the inverter function. The driver board 212 converts the control signals into voltage and current signals suitable for driving the power devices according to the control commands sent by the main board 213.

[0062] The electrical components on the drive board 212 are the main heat-generating components, such as insulated gate bipolar transistors (IGBTs). Therefore, the first heat sink 320 is connected to the back of the drive board 212 for targeted heat dissipation, thereby improving the heat dissipation effect of the energy storage inverter.

[0063] The DC input board 211 is mounted on top of the drive board 212. The DC input board 211 is parallel to the drive board 212 and has a gap between them to fully utilize the installation space and reduce the inverter size. The DC input board 211 is the starting part of the energy storage inverter circuit. It is mainly responsible for receiving the input of external DC power, usually from renewable energy power generation devices such as solar panels and wind turbines, or DC power provided by energy storage batteries. Its function is to provide a stable DC power foundation for subsequent circuit processing.

[0064] The AC output board 214 performs final processing and output on the AC power generated after being controlled by the main board 213 and driven by the driver board 212. The AC output board 214 filters the output AC power to reduce harmonic interference generated during power conversion, improving power quality and ensuring it meets grid connection standards or load requirements. The AC output board 214 is mounted side-by-side with the DC input board 211 above the driver board 212, parallel to it and spaced apart to maximize installation space and reduce inverter size.

[0065] The AC output board 214 is equipped with a common-mode inductor 2141. The common-mode inductor 2141, through its coils wound in the same direction and the superposition of magnetic flux, generates a high-inductive impedance path, effectively filtering out common-mode interference in the circuit. It suppresses common-mode noise generated by high-frequency switching, reduces electromagnetic interference, protects internal sensitive components, improves power quality, and makes the output AC waveform cleaner. Simultaneously, it meets electromagnetic compatibility design requirements, ensuring stable operation of the equipment in complex electromagnetic environments.

[0066] The main board 213 is mounted above the AC output board 214, with a gap between them. The main board 213 is small in size, and its placement on the top layer facilitates a compact layout of the energy storage inverter. The main board 213 is the control core of the energy storage inverter. It contains control circuits and signal processing circuits, responsible for the overall operation control and management functions of the inverter. The main board 213 houses core processing chips such as microcontrollers (MCUs) or digital signal processors (DSPs).

[0067] In one possible implementation, the circuit board 210 further includes a motor relay board 215, a load relay board 216, and a power grid relay board 217. A mounting plate 140 is provided inside the housing 100. The mounting plate 140 is located at one end of the drive board 212. The load relay board 216 and the power grid relay board 217 are arranged side by side on the mounting plate 140, and the motor relay board 215 is arranged above the power grid relay board 217.

[0068] Mounting plate 140 is fixed to the intermediate mounting frame 120 and is located at the bottom of the second mounting port. There is a gap between mounting plate 140 and drive plate 212. Mounting plate 140 is located at the bottom of intermediate mounting frame 120. Load relay plate 216 and power grid relay plate 217 are arranged side by side on mounting plate 140, with load relay plate 216 close to DC input plate 211.

[0069] The motor relay board 215 is used to control the power supply to and from the motor. In the energy storage inverter system, when the motor needs to start or stop, the motor relay board 215 will connect or disconnect the power supply circuit of the motor according to the control signal.

[0070] The function of the load relay board 216 is to control the connection and disconnection between the external load and the inverter output circuit. When the inverter is working normally and the output AC power meets the power demand of the load, the load relay board 216 will connect the load circuit, enabling the load to use electrical energy normally.

[0071] The grid relay board 217 is mainly used to control the connection between the inverter and the power grid. In a grid-connected energy storage inverter system, when the AC parameters (voltage, frequency, phase, etc.) output by the inverter match the power grid and meet the grid connection conditions, the grid relay board 217 will connect the circuit between the inverter and the power grid, enabling the inverter to feed power to the power grid and transmit excess electrical energy into the grid.

[0072] For example, circuit board 210 also includes a communication board 218, which is mounted above load relay board 216 to make full use of space and reduce the size of the inverter. The main function of communication board 218 is to realize data transmission, remote monitoring and control, fault diagnosis and alarm, and system integration and collaborative operation. It transmits the inverter's operating data to external monitoring equipment or the cloud via wired or wireless communication, and receives remote control commands to realize operations such as starting and stopping the inverter, setting parameters, and switching modes.

[0073] The inverter inductor 220 is electrically connected to the driver board 212. The inverter inductor 220 is located inside the bottom shell 130 and is fixedly connected to the intermediate mounting frame 120. In this embodiment, three inverter inductors 220 are provided, and the inverter inductors 220 are located at the top inside the intermediate mounting frame 120.

[0074] For example, the output inductor 230 includes a photovoltaic inductor 231 and a battery inductor 232. The photovoltaic inductor 231 is electrically connected to the DC input board 211, and the battery inductor 232 is also electrically connected to the DC input board 211. Both the photovoltaic inductor 231 and the battery inductor 232 are located within the bottom housing 130 and are fixedly connected to the intermediate mounting frame 120. The photovoltaic inductor 231 and the battery inductor 232 are disposed at the bottom within the intermediate mounting frame 120.

[0075] For example, the circuit board component 210 also includes a bus capacitor 219, which is configured as a two-layer stacked structure. The bus capacitor 219 is disposed within the intermediate mounting frame 120 and is located above the inverter inductor 220.

[0076] For example, refer to Figure 1 A data acquisition rod 241 is installed on the outer wall of the middle mounting frame 120. The data acquisition rod 241 is electrically connected to the communication board 218 and performs data acquisition and communication via WiFi mode.

[0077] For example, an air switch 242 is also provided on the side of the intermediate mounting frame 120. The air switch 242 is located on one side of the DC input board 211 and is electrically connected to the DC input board 211, thereby realizing the opening or closing of the DC input of the photovoltaic panel.

[0078] For example, a power switch 243 is also provided on the side of the intermediate mounting frame 120. The power switch 243 is electrically connected to the drive board 212 to control the operation or disconnection of the energy storage inverter.

[0079] For example, a photovoltaic terminal block 244 (Maximum Power Point Tracking, MPPT) is provided at the bottom of the intermediate mounting frame 120. The photovoltaic terminal block 244 is used to electrically connect the photovoltaic panel to the DC input board 211. In the embodiments of this application, the photovoltaic terminal block 244 is configured with 6 channels.

[0080] For example, the bottom of the intermediate mounting frame 120 is also provided with a battery connection terminal 245, which is used to electrically connect an external battery to the DC input board 211 for reverse charging of the battery.

[0081] For example, the bottom of the intermediate mounting frame 120 is also provided with a load connection terminal 246, which is used to provide an external load to be electrically connected to the load relay board 216.

[0082] For example, the bottom of the intermediate mounting frame 120 is also provided with a motor connection end 247, which is used to provide an external motor for electrical connection with the motor relay board 215.

[0083] For example, the bottom of the intermediate mounting frame 120 is also provided with a power grid connection terminal 248, which is used to provide an external power grid to electrically connect to the power grid relay board 217.

[0084] For example, a communication terminal 249 (Communication, COM) is also provided at the bottom of the intermediate mounting frame 120, which is used for connecting the communication line to the communication board 218.

[0085] In one possible implementation, the energy storage inverter further includes a second heat sink 400, which is connected to the housing 100 and is disposed between the drive plate 212 and the mounting plate 140 to drive the flow of gas inside the housing 100.

[0086] The second heat sink 400 is installed in the middle of the intermediate mounting frame 120, between the drive plate 212 and the mounting plate 140. It can drive the air flow inside the housing 100 to form convection. Compared with the heat sink structure set at the end, the second heat sink 400 set in the middle can better take into account the heat dissipation of the components on the drive plate 212 and the mounting plate 140. In addition, it avoids the heat-generating structure from being concentrated in the middle of the energy storage inverter, effectively dissipates the heat of the drive plate 212, reduces the temperature of the housing 100, improves the heat dissipation efficiency and operational stability of the energy storage inverter, and ensures its performance and lifespan.

[0087] In one possible implementation, the second heat sink 400 includes a second fan 410 and a third fan 420, both of which are connected to the housing 100. The second fan 410 blows air toward the drive plate 212, and the third fan 420 blows air toward the mounting plate 140, so that the air inside the housing 100 circulates.

[0088] Both the second fan 410 and the third fan 420 are mounted on the intermediate mounting frame 120. The second fan 410 and the third fan 420 face opposite directions: the second fan 410 blows air towards the drive plate 212, and the third fan 420 blows air towards the mounting plate 140. This opposite orientation causes the airflow from both fans to create convection within the housing 100, promoting air circulation within the housing 100, improving heat dissipation efficiency, reducing the temperature inside the housing 100, ensuring stable operation of the energy storage inverter, and extending its service life.

[0089] In one possible implementation, the third fan 420 is tilted toward the grid relay plate 217 so that the third fan 420 drives the airflow at the grid relay plate 217.

[0090] The third fan 420 has a certain tilt angle to better dissipate heat from the power grid relay board 217 and the motor relay board 215, thereby improving the heat dissipation effect.

[0091] The energy storage inverter provided in this application embodiment has a first heat sink 300 at the bottom of the circuit board 210 to dissipate heat from the circuit board 210. In addition, the inverter inductor 220 and the output inductor 230 are located at the two ends of the circuit board 210, thereby dispersing the heat-generating components and reducing heat concentration. This avoids the inverter from experiencing performance degradation or damage due to local overheating, improves the operational stability and reliability of the energy storage inverter, and extends its service life.

[0092] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An energy storage inverter, characterized by, include: Casing (100), A circuit assembly (200) includes a circuit board (210), a plurality of inverter inductors (220) and a plurality of output inductors (230). The circuit board (210) is disposed within the housing (100). The inverter inductors (220) and the output inductors (230) are electrically connected to the circuit board (210) respectively. The inverter inductors (220) and the output inductors (230) are located within the housing (100) and are located at both ends of the housing (100). A first heat sink (300) is disposed inside the housing (100) and located at the bottom of the circuit board (210) to dissipate heat from the circuit board (210).

2. The energy storage inverter of claim 1, wherein, The first heat sink (300) includes a first fan (310) and a plurality of first heat sink fins (320). The first heat sink fins (320) are spaced apart at the bottom of the circuit board (210). The first fan (310) is connected to one end of the first heat sink fins (320) to drive the airflow near the first heat sink fins (320).

3. The energy storage inverter of claim 2, wherein, The bottom of both the inverter inductor (220) and the output inductor (230) is provided with a second heat dissipation fin (330), the second heat dissipation fin (330) is parallel to the first heat dissipation fin (320), and the first heat dissipation component (300) is located between the inverter inductor (220) and the output inductor (230).

4. The energy storage inverter of claim 2, wherein, The side wall of the housing (100) is provided with a first heat dissipation mesh (131), which is located at both ends of the first heat dissipation fin (320) along its length.

5. The energy storage inverter of any one of claims 1-4, wherein, The bottom of the housing (100) is provided with a second heat dissipation mesh (132), which is located below the inverter inductor (220) and the output inductor (230).

6. The energy storage inverter of any one of claims 1-4, wherein, The circuit board (210) includes a DC input board (211), a driver board (212), a main board (213), and an AC output board (214) connected in sequence. The driver board (212) is disposed at the bottom of the housing (100) and connected to the housing (100). The first heat sink (300) is disposed on the back of the driver board (212) for heat dissipation. The DC input board (211) and the AC output board (214) are fixed side by side above the driver board (212), and the main board (213) is stacked and fixed on the AC output board (214).

7. The energy storage inverter of claim 6, wherein, The circuit board (210) also includes a motor relay board (215), a load relay board (216), and a power grid relay board (217). A mounting plate (140) is provided inside the housing (100). The mounting plate (140) is located at one end of the drive board (212). The load relay board (216) and the power grid relay board (217) are arranged side by side on the mounting plate (140), and the motor relay board (215) is arranged above the power grid relay board (217).

8. The energy storage inverter of claim 7, wherein, It also includes a second heat sink (400), which is connected to the housing (100). The second heat sink (400) is disposed between the drive plate (212) and the mounting plate (140) to drive the gas flow inside the housing (100).

9. The energy storage inverter of claim 8, wherein, The second heat sink (400) includes a second fan (410) and a third fan (420), both of which are connected to the housing (100). The second fan (410) blows air toward the drive plate (212), and the third fan (420) blows air toward the mounting plate (140) to circulate the air inside the housing (100).

10. The energy storage inverter of claim 9, wherein, The third fan (420) is tilted toward the power grid relay plate (217) so that the third fan (420) drives the airflow at the power grid relay plate (217).

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