An energy storage inverter with adjustable airflow direction

Abstract

This invention relates to the field of inverter technology, specifically to an energy storage inverter with adjustable airflow direction. It includes an inverter board and a partition plate disposed at the bottom of the inverter board. A lower air supply channel is reserved between the bottom of the inverter board and the partition plate, and an upper air supply channel is reserved between the top of the inverter board and the equipment inside the mobile power station. The ends of the lower and upper air supply channels are connected. An annular enclosure is provided on the top of the partition plate. In this energy storage inverter with adjustable airflow direction, the lower and upper air supply channels allow the airflow directions to flow in opposite directions. When used outdoors, the angle between the airflow direction and the partition plate is changed by tilting the control device, so that the airflow direction forms a convergence angle with the partition plate surface. When the airflow passes through the lower air supply channel, the internal liquid is intercepted and then enters the upper air supply channel to cool the inverter board, thereby reducing the probability of liquid contacting the inverter board.

Description

Technical Field

[0001] This invention relates to the field of inverter technology, and more specifically, to an energy storage inverter with adjustable airflow direction. Background Technology

[0002] Energy storage inverters are key devices connecting energy storage batteries to the power grid or loads, responsible for achieving bidirectional energy conversion and intelligent control. They can invert DC power from batteries into AC power for load use or grid feedback, or rectify AC power from the grid or photovoltaic system into DC power to charge batteries. Energy storage inverters employ a three-level topology and SiC (silicon carbide) MOSFETs to significantly reduce energy loss, thereby improving power generation conversion efficiency.

[0003] With the increasing diversification of electricity demand, portable mobile power stations equipped with energy storage inverters have gradually become the mainstream in the market. In these devices, the energy storage inverter plays the core role of "electrical energy conversion." Specifically, when the mobile power station is charged by mains power, vehicle power, or solar panels, the inverter converts the externally input AC power into DC power to charge the built-in lithium battery pack; while when supplying power to external devices, it converts the DC power in the battery into AC power to support various electrical devices.

[0004] However, portable mobile power stations face greater reliability challenges due to their frequent outdoor use and complex environments. This is especially true given that current energy storage inverters are directly mounted in the main housing as circuit boards. This design results in a significant mismatch between their protection capabilities and the complex outdoor usage scenarios. A typical hidden danger is that even when users believe the equipment is safe under eaves or near a tent, flying rainwater can still be easily drawn into the equipment through the air intake and directly contact the inverter boards via the fan airflow, increasing the risk of short circuits and corrosion. Summary of the Invention

[0005] The purpose of this invention is to provide an energy storage inverter with adjustable airflow direction, which solves the problem mentioned in the background art by changing the angle relationship between the partition and the fan, namely, the problem that rainwater can easily contact the inverter plate directly along the airflow of the fan.

[0006] To achieve the above objectives, the energy storage inverter with adjustable airflow direction includes an inverter board and a partition plate disposed at the bottom of the inverter board. A lower air supply channel is reserved between the bottom of the inverter board and the partition plate, and an upper air supply channel is reserved between the top of the inverter board and the equipment inside the mobile power station. The end of the lower air supply channel is connected to the end of the upper air supply channel.

[0007] The top of the partition is provided with a ring-shaped enclosure, and a vent is provided on one side of the enclosure. The upper part of the vent is connected to the upper air supply channel, and the lower part is connected to the lower air supply channel.

[0008] It also includes an adjustment component, a fan, and a fan carrier. The fan carrier is used to drive the fan to slide up and down at the air vent, so that the fan has a first position and a second position. In the first position, the airflow path goes through the upper air delivery channel to the lower air delivery channel, and in the second position, the airflow path goes through the lower air delivery channel to the upper air delivery channel.

[0009] When the baffle is tilted, the fan is in the second position. The fan angle is adjusted by the adjusting device so that the airflow direction forms an intersection angle with the baffle surface, thereby using the baffle surface to trap and separate the liquid contained in the airflow.

[0010] In the above technical solution, when the partition is tilted, the fan faces the partition, thereby using the partition to intercept the liquid in the airflow. Then, the airflow enters the upper air delivery channel to cool the inverter plate.

[0011] Based on this, the fan carrier includes a sliding frame that is slidably disposed on the side wall of the enclosure and a fixed frame that is rotatably connected to the sliding frame;

[0012] One side of the sliding frame is provided with a driving component for driving the sliding frame to move up and down;

[0013] The mounting brackets are located on both sides of the fan, and are rotatably connected to the sliding brackets via insert shafts on the side walls.

[0014] Based on this, the adjusting component includes a counterweight block disposed at the bottom of the fixed frame. When the partition is tilted, the counterweight block maintains the vertical state of the fan by its own weight.

[0015] In another technical solution, a drainage pipe penetrating the main shell of the mobile power station is provided at the bottom of the enclosure. The drainage pipe is located on the side of the enclosure near the ventilation port. By utilizing the inclined state of the partition, the liquid trapped on the surface of the partition is led to the outside.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In this energy storage inverter with adjustable airflow direction, the airflow directions can be reversed through the lower and upper airflow channels. When used outdoors, the angle between the airflow direction and the partition is changed by tilting the control device, so that the airflow direction and the partition surface form a convergence angle. When the airflow passes through the lower airflow channel, the internal liquid is intercepted and then enters the upper airflow channel to cool the inverter plate, thereby reducing the probability of liquid contacting the inverter plate.

[0018] 2. In this energy storage inverter with adjustable airflow direction, by controlling the tilt of the baffle, on the one hand, the angle between the airflow and the baffle is changed to intercept the liquid in the airflow. On the other hand, the intercepted liquid can be quickly led to the outside through the drain pipe, thereby reducing the evaporation of liquid in the baffle.

[0019] 3. In this energy storage inverter with adjustable airflow direction, the fan can not only be in the second position to process the liquid when the partition is tilted, but also blow on the surface of the inverter plate in the first position. In conjunction with the vibration generated during the movement, by increasing the power of the fan, the jumping impurities are blown off the surface of the inverter plate, thereby improving the life of the inverter plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the partition of the present invention. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the structure of the partition of the present invention. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of the fan carrier of the present invention;

[0024] Figure 5 This is a schematic diagram of the counterweight block of the present invention;

[0025] Figure 6 This is a schematic diagram of the working state structure of the inverter board of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the guide plate of the present invention;

[0027] Figure 8 This is a schematic diagram showing the position of the fan in this invention.

[0028] The meanings of the labels in the diagram are as follows:

[0029] 100. Inverter board; 101. Partition plate; 102. Lower air supply channel; 103. Upper air supply channel; 104. Air guide plate; 105. Inclined plate; 110. Enclosure; 111. Vent; 112. Drain pipe; 120. Fan carrier; 121. Fixing frame; 122. Insert shaft; 123. Sliding frame; 124. Counterweight; 130. Fan; 140. Electric push rod; 150. Guide plate; 151. Drive plate; 200. Mobile power station. Detailed Implementation

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] To address the problem that rainwater can easily travel along the airflow of fan 130 and directly contact inverter board 100, this invention provides an energy storage inverter with adjustable airflow direction. For example... Figure 1 As shown, the energy storage inverter includes an inverter board 100, which is installed inside the mobile power station 200 (which can be understood as an outdoor power source) and is usually located above the battery pack. Therefore, a partition 101 needs to be installed at the bottom of the inverter board 100 to isolate the battery pack from the inverter board 100. A lower air supply channel 102 is reserved between the bottom of the inverter board 100 and the partition 101, and an upper air supply channel 103 is reserved between the top of the inverter board 100 and the equipment inside the mobile power station 200. Next, an annular enclosure 110 is provided on the top of the partition 101. The enclosure 110 surrounds the outside of the inverter board 100, with its length sidewall fitting against the sidewall of the inverter board 100 and its width sidewall having a gap with the sidewall of the inverter board 100, so that the end of the lower air supply channel 102 and the end of the upper air supply channel 103 are connected. Furthermore, guide vanes 104 are provided on the left side of both the lower air delivery channel 102 and the upper air delivery channel 103. The guide vanes 104 have an arc-shaped structure to guide the airflow and accelerate its flow.

[0034] It should be noted that in some other embodiments, the enclosure 110 may not be provided, and the main housing of the mobile power station 200 may be used directly instead. As an example, the side wall of the inverter board 100 in the length direction is attached to the side wall of the main housing, and a gap is reserved between the side wall in the width direction and the side wall of the main housing, which also allows the end of the lower gas delivery channel 102 to communicate with the end of the upper gas delivery channel 103.

[0035] For ease of understanding, this invention is described using enclosure 110 as an example. In this embodiment, enclosure 110 has a vent 111 on one side, the upper part of which is connected to the upper air supply channel 103 and the lower part is connected to the lower air supply channel 102.

[0036] Combination Figure 2 As shown, the energy storage inverter also includes an adjustment component, a fan 130, and a fan carrier 120. The fan carrier 120 drives the fan 130 to slide up and down at the vent 111, giving the fan 130 a first position and a second position. The airflow directions in the two positions are opposite. In the first position, the airflow path is through the upper air supply channel 103 to the lower air supply channel 102. In the second position, the airflow path is through the lower air supply channel 102 to the upper air supply channel 103. When the partition 101 is tilted, the fan 130 is in the second position. The angle of the fan 130 is adjusted by the adjustment component, causing the airflow to flow in a specific direction and form a convergence angle with the surface of the partition 101. This allows the surface of the partition 101 to trap and separate the liquid contained in the airflow.

[0037] In other words, the lower air delivery channel 102 and the upper air delivery channel 103 allow the airflow to flow in opposite directions. When used outdoors, the angle between the airflow direction and the partition 101 is changed by tilting the control device, so that the airflow direction and the surface of the partition 101 form an intersection angle. When the airflow passes through the lower air delivery channel 102, the liquid inside is intercepted, and then it enters the upper air delivery channel 103 to cool the inverter plate 100, thereby reducing the probability of liquid contacting the inverter plate 100.

[0038] Specifically, since the airflow area corresponds to the volume of the fan 130, in this invention, the height of the lower airflow channel 102 needs to be equal to or greater than the height of the fan 130. This design prevents some airflow from blowing towards the inverter board 100 when the fan 130 is in the second position. For details regarding the setting of the lower airflow channel 102, please refer to the following embodiment:

[0039] exist Figure 2 In the illustrated embodiment, the baffle 101 has a flat plate structure, and the distance between the baffle 101 and the inverter plate 100 is equal to or greater than the height of the fan 130. In this embodiment, the flat plate baffle 101 makes the lower air delivery channel 102 higher, improving airflow permeability.

[0040] exist Figure 3 In the illustrated embodiment, the height of one end of the partition 101 near the vent 111 is lower than the height of the other end, and the two ends are connected by a ramp 105. The distance between the high end of the partition 101 and the inverter plate 100 is less than the height of the fan 130, and the distance between the low end of the partition 101 and the inverter plate 100 is equal to or greater than the height of the fan 130. In this embodiment, the low end of the partition 101 allows the fan 130 to be lowered below the inverter plate 100, and the gas blown by the fan 130 can also be blown towards the ramp 105. The ramp 105 traps and separates the liquid contained in the airflow, while the gas continues to flow through the high end of the partition 101. This design reduces the space occupied and decreases the volume of the mobile power station 200.

[0041] Figure 4 The specific structure of the fan carrier 120 is shown in the figure. The fan carrier 120 includes a sliding frame 123 slidably mounted on the side wall of the enclosure 110 and a fixed frame 121 rotatably connected to the sliding frame 123. The sliding frame 123 can be a U-shaped structure, a square shape, or other shapes. A driving component for driving the sliding frame 123 to move up and down is provided on one side of the sliding frame 123, and the driving component is fixed to the side wall of the enclosure 110. The driving component can be... Figure 4 The electric actuator 140 can also be a combination of a motor and a lead screw. The fixing bracket 121 is detachably mounted on both sides of the fan 130 and is rotatably connected to the sliding bracket 123.

[0042] In specific implementation, a shaft 122 is provided on the side wall of the fixed frame 121 away from the fan 130, and a shaft hole for the shaft 122 to pass through is provided on the side wall of the sliding frame 123. Inserting the shaft 122 into the shaft hole on the side wall of the sliding frame 123 achieves a rotatable connection between the fixed frame 121 and the sliding frame 123. Regarding the sliding of the sliding frame 123, refer to... Figure 5 Protruding grooves can be provided on both sides of the vent 111 in the height direction. Then, the sliding frame 123 is bent outward toward the side wall of the enclosure 110. By inserting the bent part of the sliding frame 123 into the groove, the sliding frame 123 can be slidably set.

[0043] Regarding the structure of the adjusting component, the present invention provides the following two embodiments:

[0044] exist Figure 4 In the embodiment shown, the adjusting member includes a counterweight 124 disposed at the bottom of the fixed frame 121. When the partition 101 is tilted, the counterweight 124 maintains the vertical state of the fan 130 by its own weight, so that the airflow forms a convergence angle with the surface of the partition 101.

[0045] exist Figure 7In the illustrated embodiment, the adjusting component includes a guide plate 150 disposed on the outer ring of the insert shaft 122 and a drive plate 151 disposed on the side wall of the enclosure 110; the guide plate 150 is located on the side of the insert shaft 122 away from the enclosure 110; while the drive plate 151 has an "L"-shaped structure, with its top end located on the path of the guide plate 150 as it moves downward. With this design, when the tilt angle of the partition 101 is low, the guide plate 150 will contact the top end of the drive plate 151 during its downward movement. At this time, the top end of the drive plate 151 pushes the insert shaft 122 upward through the guide plate 150, causing the fan 130 to face the partition 101.

[0046] pass Figure 4 The embodiments shown illustrate the working principle of the present invention in detail:

[0047] like Figure 6 As shown, when used outdoors, the end of the mobile power station 200 away from the vent 111 is tilted upwards. At this time, the partition 101, inverter board 100 and enclosure 110 tilt synchronously. Since the fixed frame 121 is rotatably connected to the sliding frame 123, the angle of the fan 130 is maintained by the weight of the counterweight 124, so that the fan 130 is perpendicular to the ground. Then, the sliding frame 123 is driven to move downwards by the electric push rod 140. The sliding frame 123 drives the fan 130 to move downwards to the right side of the lower air supply channel 102 (i.e., the second position) through the fixed frame 121. Figure 6 The black arrow in the middle represents the airflow blown out by the fan 130. The airflow hits the surface of the partition 101, then flows along the surface of the partition 101 into the upper air delivery channel 103 and cools the inverter plate 100, and finally is discharged through the vent 111. During the process of the airflow hitting the partition 101, liquid residue in the airflow remains on the surface of the partition 101.

[0048] Furthermore, considering that the battery pack is located directly below the separator 101, simply using the separator 101 to trap liquid could easily cause the liquid trapped on the surface of the separator 101 to evaporate when the battery pack heats up. Therefore, this invention provides a drain pipe 112 at the bottom of the enclosure 110. The drain pipe 112 penetrates the main housing of the mobile power station 200, and is located on the side of the enclosure 110 near the vent 111. This allows the liquid trapped on the surface of the separator 101 to be drained to the outside by utilizing the inclined state of the separator 101. The drainage process is described in reference [reference needed]. Figure 6 Under the influence of the tilt, the liquid on the surface of the partition 101 flows along the white arrow and eventually flows out through the drain pipe 112.

[0049] In other words, by controlling the tilt of the partition 101, the present invention can, on the one hand, change the angle between the airflow and the partition 101 to intercept the liquid in the airflow, and on the other hand, the intercepted liquid can be quickly led to the outside through the drain pipe 112, thereby reducing the evaporation of liquid in the partition 101.

[0050] In addition, such as Figure 8 As shown, when the partition 101 is tilted during movement, the fan 130 is in the first position (i.e., on the right side of the upper air delivery channel 103). When the fan 130 is in the first position, the airflow direction forms an intersection angle with the surface of the inverter plate 100. Combined with the vibration generated during movement, this blows down impurities from the surface of the inverter plate 100. Specifically, the mobile power station 200 is usually manually pulled during movement. At this time, the mobile power station 200 is also tilted, while the fan 130 remains vertical. The airflow blows onto the surface of the inverter plate 100. Simultaneously, the vibration generated during the movement of the mobile power station 200 forces impurities on the surface of the inverter plate 100 to briefly jump up. By increasing the power of the fan 130, the jumping impurities are blown into the lower air delivery channel 102.

[0051] In summary, the fan 130 can not only process the liquid in the second position when the partition 101 is tilted, but also blow on the surface of the inverter plate 100 in the first position. In conjunction with the vibration generated during the movement, by increasing the power of the fan 130, the jumping impurities are blown off the surface of the inverter plate 100, thereby improving the lifespan of the inverter plate 100.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy storage inverter with adjustable airflow direction, comprising an inverter plate (100) and a partition plate (101) disposed at the bottom of the inverter plate (100), characterized in that: A lower gas transmission channel (102) is reserved between the bottom of the inverter board (100) and the partition (101), and an upper gas transmission channel (103) is reserved between the top of the inverter board (100) and the equipment inside the mobile power station (200). The end of the lower gas transmission channel (102) is connected to the end of the upper gas transmission channel (103). The top of the partition (101) is provided with an annular enclosure (110), and a vent (111) is provided on one side of the enclosure (110). The upper part of the vent (111) is connected to the upper air supply channel (103), and the lower part is connected to the lower air supply channel (102). It also includes an adjustment component, a fan (130), and a fan carrier (120), the fan carrier (120) being used to drive the fan (130) to slide up and down at the air vent (111), so that the fan (130) has a first position and a second position; in the first position, the airflow path is through the upper air delivery channel (103) to the lower air delivery channel (102), and in the second position, the airflow path is through the lower air delivery channel (102) to the upper air delivery channel (103); When the partition (101) is tilted, the fan (130) is in the second position. The angle of the fan (130) is adjusted by the adjusting member so that the airflow direction forms an intersection angle with the surface of the partition (101), thereby using the surface of the partition (101) to intercept and separate the liquid contained in the airflow.

2. The energy storage inverter with adjustable airflow direction according to claim 1, characterized in that: An arc-shaped air guide plate (104) is provided on one side of both the lower air delivery channel (102) and the upper air delivery channel (103).

3. The energy storage inverter with adjustable airflow direction according to claim 1, characterized in that: The side wall of the enclosure (110) in the length direction is attached to the side wall of the inverter plate (100), and a gap is reserved between the side wall in the width direction and the side wall of the inverter plate (100) so that the end of the lower air supply channel (102) is connected to the end of the upper air supply channel (103).

4. The energy storage inverter with adjustable airflow direction according to claim 1, characterized in that: The partition (101) is a flat plate structure, and the distance between the partition (101) and the inverter plate (100) is equal to or greater than the height of the fan (130).

5. The energy storage inverter with adjustable airflow direction according to claim 1, characterized in that: The height of one end of the partition (101) near the vent (111) is lower than the height of the other end, and the two ends are connected by a ramp (105); wherein, the distance between the high end of the partition (101) and the inverter plate (100) is less than the height of the fan (130), and the distance between the low end of the partition (101) and the inverter plate (100) is equal to or greater than the height of the fan (130).

6. The energy storage inverter with adjustable airflow direction according to claim 1, characterized in that: The fan carrier (120) includes a sliding frame (123) slidably disposed on the side wall of the enclosure (110) and a fixed frame (121) rotatably connected to the sliding frame (123). A drive component for driving the sliding frame (123) to move up and down is provided on one side of the sliding frame (123); The fixing frame (121) is set on both sides of the fan (130), and the fixing frame (121) is rotatably connected to the sliding frame (123) through the insertion shaft (122) set on the side wall.

7. The energy storage inverter with adjustable airflow direction according to claim 6, characterized in that: The adjusting component includes a counterweight (124) disposed at the bottom of the fixed frame (121). When the partition (101) is tilted, the counterweight (124) maintains the vertical state of the fan (130) by its own weight.

8. The energy storage inverter with adjustable airflow direction according to claim 7, characterized in that: The adjusting component includes a guide plate (150) disposed on the outer ring of the insert shaft (122) and a drive plate (151) disposed on the side wall of the enclosure (110). The guide plate (150) is located on the side of the insert shaft (122) away from the enclosure (110); The drive plate (151) has an "L" shaped structure, with its top end located on the path of the guide plate (150) moving downward. The drive plate (151) restricts the downward movement of the guide plate (150), so that the fan (130) faces the partition (101).

9. The energy storage inverter with adjustable airflow direction according to claim 1, characterized in that: The bottom of the enclosure (110) is provided with a drain pipe (112) that penetrates the main shell of the mobile power station (200). The drain pipe (112) is located on the side of the enclosure (110) near the vent (111). By using the inclined state of the partition (101), the liquid trapped on the surface of the partition (101) is led to the outside.

10. The energy storage inverter with adjustable airflow direction according to claim 7, characterized in that: When the partition (101) is in an inclined state during the movement, the fan (130) is in the first position. The airflow direction generated by the fan (130) forms an intersection angle with the surface of the inverter plate (100). In conjunction with the vibration generated during the movement, the impurities on the surface of the inverter plate (100) are blown off.

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