A MOSFET assembly for an energy storage battery module

Abstract

This invention belongs to the technical field of MOSFET components, and particularly relates to a MOSFET component for an energy storage battery module. It includes a PCB board, with multiple MOSFET bodies fixedly connected to the upper sidewall of the PCB board and a heat-conducting plate fixedly connected to the lower sidewall of the PCB board. During operation, the MOSFET component utilizes a phase-change component to reduce the heat generated by the MOSFET component and drives a cleaning component to clean dust adhering to the surface of the dust filter, thus ensuring airflow through the dust filter. During the cleaning process, the cleaning component automatically inflates the energy storage component. Once the internal pressure of the energy storage component reaches a certain level, compressed gas is used to backflush the dust filter, further cleaning the dust adhering to its surface.

Description

Technical Field

[0001] This invention belongs to the field of MOSFET assembly technology, and in particular relates to a MOSFET assembly for an energy storage battery module. Background Technology

[0002] MOSFETs are voltage-controlled semiconductor devices widely used in power electronics, integrated circuits, energy storage systems, and other fields. In energy storage battery modules, MOSFET components mainly serve as electronic switches and circuit control devices, undertaking core functions such as power management, circuit protection, and charge / discharge control. For example, the energy storage battery module MOSFET component proposed in patent publication number CN221427728U.

[0003] In the actual operation of existing MOSFET components, heat sinks are usually needed to effectively dissipate the heat generated during operation. However, energy storage battery modules are often in harsh working environments, and dust in the surrounding environment can easily adhere to the surface of the heat sink. Although dust screens can initially block dust when installed on the outside of the heat sink, their negative effects gradually become apparent over time. As dust accumulates on the surface of the dust screen, the airflow resistance increases significantly, leading to a decrease in the convective heat transfer coefficient of the heat sink surface, which ultimately affects the heat dissipation performance of the MOSFET components.

[0004] To address this issue, a MOSFET assembly for an energy storage battery module is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a MOSFET assembly for an energy storage battery module.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a MOSFET assembly for an energy storage battery module, comprising a PCB board, wherein multiple MOSFET bodies are fixedly connected to the upper sidewall of the PCB board, a heat-conducting plate is fixedly connected to the lower sidewall of the PCB board, and multiple horizontally arranged heat dissipation plates are fixedly connected to the lower sidewall of the heat-conducting plate, and further comprising:

[0007] The mounting housing is located on the lower side of the heat-conducting plate. A controller is fixedly connected to the side wall of the mounting housing. The mounting housing and the heat-conducting plate are fixedly connected by bolts. Heat dissipation vents are provided on both the left and right sides of the mounting housing. Dustproof nets are fixedly connected to the inner walls of the heat dissipation vents.

[0008] Multiple phase change components are evenly distributed on the lower sidewall of the heat-conducting plate to reduce the temperature of the MOSFET body during operation.

[0009] Two cleaning components are respectively set on the left and right sides of the mounting housing. Gas is delivered into the cleaning components through the phase change component, and the cleaning components are used to clean the dust attached to the surface of the dustproof net.

[0010] Two backwash components are symmetrically fixedly connected to the left and right sides of the lower side wall of the mounting housing to backwash and clean the dust attached to the surface of the dustproof net. The cleaning components are connected to the backwash components through the energy storage component.

[0011] Preferably, the phase change assembly includes multiple phase change cylinders, which are evenly distributed on the lower sidewall of the heat-conducting plate. The upper end of each phase change cylinder is open, and the lower end is closed. A heat-conducting seat is fixedly connected to the inner wall of each phase change cylinder, and the heat-conducting seat contacts the lower sidewall of the heat-conducting plate. A piston plate is fixedly connected to the lower inner wall of each phase change cylinder by a spring. Phase change material is filled between the piston plate and the heat-conducting seat. Each of the multiple phase change cylinders has a fixedly connected air outlet pipe, and each of the multiple air outlet pipes is equipped with a first one-way valve. The lower ends of the multiple air outlet pipes located in the same horizontal row are fixedly connected to the same horizontal pipe. An air inlet pipe is fixedly connected to the sidewall of each phase change cylinder, and a second one-way valve is provided in the air inlet pipe.

[0012] Preferably, both cleaning components include cleaning plates, which are located on the left and right sides of the mounting housing, respectively. The upper sidewalls of both cleaning plates are connected by springs and the lower sidewalls of heat-conducting plates. Bent tubes are fixedly inserted into the left and right sides of the mounting housing. The bent tubes have an inverted U-shaped structure. One end of the bent tube located on the inner wall of the mounting housing is fixedly connected to a longitudinally arranged air collection pipe. The horizontal tubes have a U-shaped structure. The left and right ends of multiple horizontal tubes are fixedly connected to the air collection pipes on both sides, respectively. One end of the bent tube extending out of the mounting housing is fixedly connected to a telescopic airbag. The lower end of the telescopic airbag is fixedly connected to the upper sidewall of the cleaning plate.

[0013] Preferably, the bent tube extends out of the wall of the mounting housing and is fixedly connected to a thin tube, through which the gas inside the telescopic airbag is discharged.

[0014] Preferably, the energy storage assembly includes a horizontal plate fixedly connected to the outer walls of the left and right sides of the mounting housing. Two energy storage cylinders are fixedly inserted into the side walls of the horizontal plate. A piston seat is movably arranged inside the energy storage cylinder. The piston seat and the cleaning plate are fixedly connected by the same vertical rod. The lower side walls of the two energy storage cylinders are fixedly connected to an energy storage tube. A third one-way valve is provided inside the energy storage tube.

[0015] Preferably, the recoil assembly includes a recoil cylinder fixedly connected to the inner wall of the lower side of the mounting housing. The lower end of the energy storage tube passes through the mounting housing and communicates with the side wall of the recoil cylinder. A piston block is fixedly connected to the inner wall of the recoil cylinder on the side away from the energy storage tube by a spring. A metal tube is fixedly connected to the side wall of the recoil cylinder on the side near the energy storage tube. The metal tube has an inverted L-shaped structure. A serpentine tube is fixedly connected to the upper end of the metal tube. Multiple jet nozzles are fixedly connected to the side wall of the serpentine tube on the side near the dust filter. A control valve is provided inside the metal tube. A trigger switch is fixedly connected to the inner wall of the recoil cylinder. The trigger switch is electrically connected to the controller.

[0016] Preferably, the heat-conducting plate has a heat dissipation pipe inside, and a hydraulic sensor is installed inside the heat dissipation pipe.

[0017] Preferably, the wall of the energy storage tube is fixedly connected to a short pipe, and a fourth one-way valve is provided inside the short pipe.

[0018] Compared with existing technologies, the advantages of a MOSFET assembly for an energy storage battery module are:

[0019] 1. By setting up phase change components and cleaning components, when the MOSFET components of the energy storage battery module are working, the phase change components reduce the heat generated by the MOSFET components during operation, and can drive the cleaning components to work, using the cleaning components to clean the dust attached to the surface of the dustproof net, thereby ensuring the airflow of the dustproof net.

[0020] 2. Through the set energy storage component and backflushing component, during the cleaning process of the cleaning component to clean the dust screen, the energy storage component can be automatically inflated. After the air pressure inside the energy storage component reaches a certain level, the compressed gas is used to backflush the dust screen to further clean the dust adhering to the surface of the dust screen.

[0021] 3. With the help of heat pipes and hydraulic sensors, when the operating temperature of the MOSFET assembly of the energy storage battery module is too high, liquid cooling can be used to cool the MOSFET assembly. At the same time, the liquid flow inside the heat pipes can be automatically detected. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a MOS transistor assembly for an energy storage battery module provided by the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the mounting housing in the MOS transistor assembly of an energy storage battery module provided by the present invention;

[0024] Figure 3 This is a schematic diagram of the cleaning component in a MOS transistor assembly of an energy storage battery module provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the recoil assembly in a MOS transistor assembly of an energy storage battery module provided by the present invention;

[0026] Figure 5 This is a schematic diagram of the phase change component in a MOS transistor assembly of an energy storage battery module provided by the present invention;

[0027] Figure 6 This is a schematic diagram of the shape and structure of the serpentine tube in the MOS tube assembly of an energy storage battery module provided by the present invention.

[0028] In the diagram: 1 PCB board, 2 MOS transistor body, 3 heat conduction plate, 4 heat sink, 5 mounting housing, 6 controller, 7 heat dissipation port, 8 dustproof net, 9 phase change component, 91 phase change cylinder, 92 heat conduction seat, 10 piston plate, 11 phase change material, 12 air outlet pipe, 13 first one-way valve, 14 horizontal pipe, 15 air inlet pipe, 16 second one-way valve, 17 cleaning component, 171 cleaning plate, 172 bend, 18 air collection pipe, 19 telescopic airbag, 20 thin tube, 21 energy storage component, 211 horizontal plate, 212 energy storage cylinder, 22 piston seat, 23 vertical rod, 24 energy storage tube, 25 third one-way valve, 26 recoil component, 261 recoil cylinder, 262 piston block, 27 metal tube, 28 serpentine tube, 29 jet nozzle, 30 control valve, 31 trigger switch, 32 heat dissipation pipe, 33 hydraulic sensor, 34 short tube, 35 fourth one-way valve. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] like Figures 1-6 As shown, a MOSFET assembly for an energy storage battery module includes a PCB board 1, with multiple MOSFET bodies 2 fixedly connected to the upper sidewall of the PCB board 1, a heat-conducting plate 3 fixedly connected to the lower sidewall of the PCB board 1, and multiple horizontally arranged heat dissipation plates 4 fixedly connected to the lower sidewall of the heat-conducting plate 3. The assembly also includes:

[0031] The mounting housing 5 is located on the lower side of the heat conduction plate 3. The controller 6 is fixedly connected to the side wall of the mounting housing 5. The mounting housing 5 and the heat conduction plate 3 are fixedly connected by bolts. Heat dissipation vents 7 are provided on both the left and right sides of the mounting housing 5. Dustproof nets 8 are fixedly connected to the inner wall of the heat dissipation vents 7.

[0032] Multiple phase change components 9 are evenly distributed on the lower sidewall of the heat-conducting plate 3 to reduce the temperature of the MOSFET body 2 during operation. Each phase change component 9 includes multiple phase change cylinders 91, which are evenly distributed on the lower sidewall of the heat-conducting plate 3. The upper end of each phase change cylinder 91 is open, and the lower end is closed. A heat-conducting seat 92 is fixedly connected to the inner wall of each phase change cylinder 91, and the heat-conducting seat 92 contacts the lower sidewall of the heat-conducting plate 3. The lower inner wall of the phase change cylinder 91 is fixedly connected by a spring. A piston plate 10 is connected, and a phase change material 11 is filled between the piston plate 10 and the heat-conducting seat 92. The lower side walls of multiple phase change cylinders 91 are all fixedly connected to an exhaust pipe 12. Each exhaust pipe 12 is equipped with a first one-way valve 13. The lower ends of multiple exhaust pipes 12 located in the same horizontal row are fixedly connected to the same horizontal pipe 14. The side walls of the phase change cylinders 91 are fixedly connected to an intake pipe 15. The intake pipe 15 is equipped with a second one-way valve 16, which can reduce the temperature of the MOS tube body 2 when it is working.

[0033] Two cleaning components 17 are respectively set on the left and right sides of the mounting housing 5. Gas is supplied into the cleaning components 17 through the phase change component 9. The cleaning components 17 are used to clean the dust attached to the surface of the dustproof net 8. Both cleaning components 17 include cleaning plates 171. The two cleaning plates 171 are located on the left and right sides of the mounting housing 5 respectively. The upper sidewalls of the two cleaning plates 171 are connected to the lower sidewall of the heat-conducting plate 3 through springs. The left and right sides of the mounting housing 5 are fixedly inserted with bent pipes 172. The bent pipes 172 have an inverted U-shaped structure. One end of the bent pipe 172 located on the inner wall of the mounting housing 5 is fixedly connected to a longitudinally arranged air collection pipe 18. The horizontal pipes 14 have a U-shaped structure. The left and right ends of the multiple horizontal pipes 14 are fixedly connected to the air collection pipes 18 on both sides respectively. One end of the bent pipe 172 extending out of the mounting housing 5 is fixedly connected to a telescopic airbag 19. The lower end of the telescopic airbag 19 is fixedly connected to the upper sidewall of the cleaning plate 171, which can clean the dust on the surface of the dustproof net 8.

[0034] Two backwash components 26 are symmetrically fixedly connected to the left and right sides of the lower side wall of the mounting housing 5, and backwash cleaning the dust adhering to the surface of the dustproof net 8. The cleaning component 17 is connected to the backwash component 26 via the energy storage component 21. The backwash component 26 includes a backwash cylinder 261 fixedly connected to the lower inner wall of the mounting housing 5. The lower end of the energy storage tube 24 passes through the mounting housing 5 and communicates with the side wall of the backwash cylinder 261. The inner wall of the backwash cylinder 261 on the side away from the energy storage tube 24 is fixedly connected by a spring. The plug 262 and the backwash cylinder 261 are fixedly connected to a metal tube 27 on the side wall near the energy storage tube 24. The metal tube 27 has an inverted L-shaped structure. The upper end of the metal tube 27 is fixedly connected to a serpentine tube 28. Multiple jet nozzles 29 are fixedly connected to the side wall of the serpentine tube 28 near the dustproof net 8. A control valve 30 is provided inside the metal tube 27. A trigger switch 31 is fixedly connected to the inner wall of the backwash cylinder 261. The trigger switch 31 is electrically connected to the controller 6 and can backwash and clean the dust on the surface of the dustproof net 8.

[0035] The bent pipe 172 extends out of the wall of the mounting housing 5 and is fixedly connected to the thin pipe 20. The gas inside the telescopic airbag 19 is discharged through the thin pipe 20, which can slowly discharge the gas inside the telescopic airbag 19.

[0036] The energy storage assembly 21 includes a horizontal plate 211 fixedly connected to the outer walls of the left and right sides of the mounting housing 5. Two energy storage cylinders 212 are fixedly inserted into the side walls of the horizontal plate 211. A piston seat 22 is movably arranged inside the energy storage cylinder 212. The piston seat 22 and the cleaning plate 171 are fixedly connected by the same vertical rod 23. The lower side walls of the two energy storage cylinders 212 are fixedly connected to an energy storage tube 24. A third one-way valve 25 is provided inside the energy storage tube 24. A short pipe 34 is fixedly connected to the wall of the energy storage tube 24. A fourth one-way valve 35 is provided inside the short pipe 34, which allows gas to enter the energy storage cylinder 212 and deliver gas to the backflushing assembly 26.

[0037] The heat-conducting plate 3 has a heat dissipation pipe 32 inside, and a hydraulic sensor 33 is installed inside the heat dissipation pipe 32. When the working temperature of the MOS tube body 2 is too high, the MOS tube body 2 can be cooled by liquid cooling. At the same time, the liquid flow inside the heat dissipation pipe 32 can be automatically detected.

[0038] The operating principle of this invention is explained as follows: When the MOSFET assembly of the energy storage battery module is working, the heat generated by the MOSFET body 2 is transferred to the heat sink 4 through the PCB board 1 and the heat-conducting plate 3. The heat sink 4 dissipates the heat through the heat dissipation port 7, and some of the heat is absorbed by the phase change material 11. The phase change material 11 absorbs a large amount of latent heat, thereby reducing the temperature of the surrounding environment. The phase change material 11 is paraffin wax. After absorbing heat, the paraffin wax changes from a solid to a liquid state, and the thermal motion of the paraffin wax molecules intensifies, the ordered structure is destroyed, the intermolecular spacing increases, and the volume expands. The expanding phase change material 11 pushes the piston plate 10, causing the gas pressure below the piston plate 10 to increase. The gas below the piston plate 10 is delivered to the horizontal pipe 14 through the outlet pipe 12 and the first one-way valve 13, and then delivered to the telescopic airbag 19 through the gas collection pipe 18 and the bend pipe 172. A very small amount of gas is slowly discharged through the thin pipe 20 (the exhaust speed of the thin pipe 20 is less than the gas delivery speed of the bend pipe 172 into the telescopic airbag 19). The telescopic airbag 19 will inflate and expand. The lower end of the telescopic airbag 19 will drive the sweeping plate 171 to move downward. When the sweeping plate 171 passes the dust screen 8, the bristles on the surface of the sweeping plate 171 will clean the dust attached to the surface of the dust screen 8. Subsequently, the gas inside the telescopic airbag 19 will be slowly discharged through the thin pipe 20 (the discharge time is one hour).

[0039] When the subsequent MOSFET stops working and the temperature drops, the phase change material 11 will gradually solidify. According to the above principle, the volume of the phase change material 11 will gradually decrease. Under the action of the spring force below, the piston plate 10 will gradually move upward, making the space below the piston plate 10 larger and the air pressure lower. Under the action of atmospheric pressure, the external gas will enter the space below the piston plate 10 through the air inlet pipe 15 and the second one-way valve 16.

[0040] As the cleaning plate 171 moves downward, it also presses against the piston seat 22 via the vertical rod 23, causing the piston seat 22 to move downward. During this downward movement, the piston seat 22 compresses the gas below it, causing the gas below the piston seat 22 to enter the recoil cylinder 261 through the accumulator pipe 24 and the third one-way valve 25. This increases the air pressure on the right side of the piston block 262 within the recoil cylinder 261 (see reference). Figure 4 As shown), under the action of air pressure, piston block 262 will move to the left. After the cleaning plate 171 is pressed down multiple times, piston block 262 will gradually move towards the trigger switch 31 and squeeze the trigger switch 31. The trigger switch 31 will then control the control valve 30 to open through the controller 6. The gas on the right side of piston block 262 will be compressed by the spring and transported to the serpentine tube 28 through the metal tube 27. It will then be sprayed out through the jet nozzle 29 on the surface of the serpentine tube 28. The gas will be used to backflush the dustproof net 8, so that the dust attached to the surface of the dustproof net 8 can be cleaned.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A MOSFET assembly for an energy storage battery module, comprising a PCB board (1), wherein a plurality of MOSFET bodies (2) are fixedly connected to the upper sidewall of the PCB board (1), and a heat-conducting plate (3) is fixedly connected to the lower sidewall of the PCB board (1), wherein a plurality of horizontally arranged heat dissipation plates (4) are fixedly connected to the lower sidewall of the heat-conducting plate (3), characterized in that, Also includes: The mounting housing (5) is located on the lower side of the heat-conducting plate (3). A controller (6) is fixedly connected to the side wall of the mounting housing (5). The mounting housing (5) and the heat-conducting plate (3) are fixedly connected by bolts. Heat dissipation vents (7) are provided on both the left and right sides of the mounting housing (5). A dustproof net (8) is fixedly connected to the inner wall of the heat dissipation vent (7). Multiple phase change components (9) are evenly distributed on the lower sidewall of the heat-conducting plate (3) to reduce the temperature of the MOS transistor body (2) during operation; Two cleaning components (17) are respectively set on the left and right sides of the mounting housing (5). Gas is delivered into the cleaning components (17) through the phase change component (9), and the cleaning components (17) are used to clean the dust attached to the surface of the dustproof net (8). Two backflush components (26) are symmetrically fixed on the left and right sides of the lower side wall of the mounting housing (5) to backflush and clean the dust attached to the surface of the dustproof net (8). The cleaning component (17) is connected to the backflush component (26) through the energy storage component (21).

2. The MOS transistor assembly for an energy storage battery module according to claim 1, characterized in that, The phase change assembly (9) includes multiple phase change cylinders (91), which are evenly distributed on the lower side wall of the heat-conducting plate (3). The upper end of each phase change cylinder (91) is open, and the lower end is closed. A heat-conducting seat (92) is fixedly connected to the inner wall of each phase change cylinder (91), and the heat-conducting seat (92) is in contact with the lower side wall of the heat-conducting plate (3). A piston plate (10) is fixedly connected to the lower inner wall of each phase change cylinder (91) by a spring. A phase change material (11) is filled between the piston plate (10) and the heat-conducting seat (92). The lower side walls of the multiple phase change cylinders (91) are all fixedly connected to an air outlet pipe (12). The multiple air outlet pipes (12) are all provided with a first one-way valve (13). The lower ends of the multiple air outlet pipes (12) located in the same horizontal row are fixedly connected to the same horizontal pipe (14). The side wall of the phase change cylinder (91) is fixedly connected to an air inlet pipe (15). The air inlet pipe (15) is provided with a second one-way valve (16).

3. The MOS transistor assembly for an energy storage battery module according to claim 2, characterized in that, Both cleaning components (17) include cleaning plates (171). The two cleaning plates (171) are located on the left and right sides of the mounting housing (5). The upper sidewalls of the two cleaning plates (171) are connected to the lower sidewall of the heat-conducting plate (3) by springs. The left and right sides of the mounting housing (5) are fixedly connected with bent pipes (172). The bent pipes (172) have an inverted U-shaped structure. One end of the bent pipe (172) located on the inner wall of the mounting housing (5) is fixedly connected to a longitudinally arranged air collection pipe (18). The horizontal pipes (14) have a U-shaped structure. The left and right ends of the multiple horizontal pipes (14) are fixedly connected to the air collection pipes (18) on both sides. One end of the bent pipe (172) extending out of the mounting housing (5) is fixedly connected to a telescopic airbag (19). The lower end of the telescopic airbag (19) is fixedly connected to the upper sidewall of the cleaning plate (171).

4. The MOS transistor assembly for an energy storage battery module according to claim 3, characterized in that, The bent pipe (172) extends out of the wall of the mounting housing (5) and is fixedly connected to the thin pipe (20). The gas inside the telescopic airbag (19) is discharged through the thin pipe (20).

5. The MOS transistor assembly for an energy storage battery module according to claim 1, characterized in that, The energy storage assembly (21) includes a horizontal plate (211) fixedly connected to the outer walls of the left and right sides of the mounting housing (5). Two energy storage cylinders (212) are fixedly inserted into the side walls of the horizontal plate (211). A piston seat (22) is movably arranged inside the energy storage cylinder (212). The same vertical rod (23) is fixedly connected between the piston seat (22) and the cleaning plate (171). The lower side walls of the two energy storage cylinders (212) are fixedly connected to an energy storage tube (24). A third one-way valve (25) is provided inside the energy storage tube (24).

6. The MOS transistor assembly for an energy storage battery module according to claim 5, characterized in that, The recoil assembly (26) includes a recoil cylinder (261) fixedly connected to the inner wall of the lower side of the mounting housing (5). The lower end of the energy storage tube (24) passes through the mounting housing (5) and is connected to the side wall of the recoil cylinder (261). A piston block (262) is fixedly connected to the inner wall of the recoil cylinder (261) away from the energy storage tube (24) by a spring. A metal tube (27) is fixedly connected to the side wall of the recoil cylinder (261) near the energy storage tube (24). The metal tube (27) has an inverted L-shaped structure. A serpentine tube (28) is fixedly connected to the upper end of the metal tube (27). Multiple jet nozzles (29) are fixedly connected to the side wall of the serpentine tube (28) near the dustproof net (8). A control valve (30) is provided inside the metal tube (27). A trigger switch (31) is fixedly connected to the inner wall of the recoil cylinder (261). The trigger switch (31) is electrically connected to the controller (6).

7. The MOS transistor assembly for an energy storage battery module according to claim 1, characterized in that, The heat-conducting plate (3) is provided with a heat dissipation pipe (32) inside, and a hydraulic sensor (33) is provided inside the heat dissipation pipe (32).

8. The MOS transistor assembly for an energy storage battery module according to claim 5, characterized in that, The wall of the energy storage tube (24) is fixedly connected to a short tube (34), and a fourth one-way valve (35) is provided inside the short tube (34).

Images