An internal heat dissipation device for network-constructed energy storage converter test and development

Abstract

The utility model belongs to power electronic heat dissipation technical field, specifically disclose a kind of inside heat abstractor for network type energy storage converter test research and development, it includes converter shell, two heat dissipation fans are symmetrically arranged in converter shell, the heat dissipation fan includes motor shaft one, the inside hollow of motor shaft one and the outer diameter array has several blade one, the one end of motor shaft one is located in converter shell, and the other end is connected with rotating rod and is communicated with the motor shaft one in converter shell rotation;Two the one end of motor shaft one is fixed in converter shell and is provided with heat dissipation pipeline one, the other end of heat dissipation pipeline one is fixed with the converter shell of the same side of motor shaft one, two heat dissipation pipeline one is connected by heat dissipation pipeline two around the outside of converter shell;The other end of rotating rod is provided with heat dissipation assembly, and the heat dissipation assembly includes heat dissipation shell, and the device solves the problem of low heat dissipation efficiency of current heat dissipation device.

Description

Technical Field

[0001] This utility model belongs to the field of power electronics heat dissipation technology, specifically relating to an internal heat dissipation device for testing and developing a grid-type energy storage converter. Background Technology

[0002] In today's energy sector, grid-based energy storage systems are increasingly widely used as a key technology to ensure the stable operation of power systems and improve the absorption capacity of renewable energy. As the core component of energy storage systems, grid-based energy storage converters undertake the important tasks of power conversion and control; their operational stability and reliability directly affect the performance of the entire energy storage system.

[0003] However, during operation, grid-connected energy storage converters generate a significant amount of heat due to the high-speed switching of internal power devices and frequent current changes. If this heat cannot be dissipated effectively and promptly, the internal temperature of the converter will rise sharply. High-temperature environments not only accelerate the aging of power devices and reduce their lifespan, but may also cause serious problems such as performance degradation, malfunctions, and even damage, thereby affecting the normal operation of the entire energy storage system and causing substantial economic losses and safety hazards.

[0004] Currently, the common heat dissipation methods for grid-type energy storage converters mainly rely on traditional cooling fans and heat sinks. Traditional cooling fans are usually fixed on the converter casing, generating airflow through continuous rotation to remove heat. However, this heat dissipation method has significant limitations. On the one hand, the heat dissipation efficiency of the cooling fan is greatly affected by factors such as ambient temperature and airflow speed. In harsh environments such as high temperature and confined spaces, the heat dissipation effect will be greatly reduced. On the other hand, traditional cooling fans cannot flexibly adjust their heat dissipation strategy according to real-time changes in the heat inside the converter. When the converter is operating under high load, it may not be able to dissipate heat in time, resulting in insufficient heat dissipation.

[0005] Furthermore, most existing heat dissipation devices have a simple structure, focusing only on localized heat dissipation and lacking overall planning and effective heat dissipation within the converter, making it difficult to achieve efficient and uniform heat dissipation. Moreover, while some complex heat dissipation systems improve heat dissipation performance to a certain extent, they often suffer from problems such as complex structure, high cost, and difficult maintenance, limiting their widespread application in grid-connected energy storage converters.

[0006] Therefore, an internal heat dissipation device for testing and developing grid-type energy storage converters is proposed to solve the problem of low heat dissipation efficiency of current heat dissipation devices. Utility Model Content

[0007] The purpose of this invention is to develop an internal heat dissipation device for testing and researching grid-type energy storage converters, in order to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an internal heat dissipation device for testing and developing a grid-type energy storage converter, including a converter housing, two cooling fans symmetrically arranged inside the converter housing, each cooling fan including a motor shaft, the motor shaft being hollow inside and having several blades arrayed on its outer diameter, one end of the motor shaft being located inside the converter housing, and the other end passing through the converter housing and rotatably connected to a rotating rod and communicating with the motor shaft;

[0009] One end of each of the two motor shafts is fixed with a heat dissipation pipe one inside the converter housing, and the other end of the heat dissipation pipe one is fixed to the converter housing on the same side as the motor shafts. The two heat dissipation pipes one are connected around the outside of the converter housing through a heat dissipation pipe two.

[0010] A heat dissipation assembly is provided at the other end of the rotating rod. The heat dissipation assembly includes a heat dissipation shell, inside which are two hollow motor shafts. The two motor shafts pass through the side walls of the heat dissipation shell and are rotatably connected to and communicate with the rotating rod. The outer diameter of the two motor shafts is fixed to the heat dissipation shell. A motor bushing is rotatably connected to the outer diameter of the two motor shafts inside the heat dissipation shell. Several blades are arrayed on the outer diameter of the motor bushing. The windward surface of the blades is arranged perpendicular to the rotation axis of the motor bushing, and the radial width of the blades is greater than the axial height. A turbine is fixed on the inner diameter of the motor bushing, and the turbine is located between the two motor shafts.

[0011] The present invention further describes that a ventilation hole is provided on the converter housing, the ventilation hole being a connection between the inside and outside of the converter housing. A sealing block is provided inside the ventilation hole within the converter housing, and the two ends of the sealing block are connected to the inner wall of the converter housing by elastic ropes.

[0012] The present invention further describes that the heat dissipation shell has a second ventilation hole and several third ventilation holes on its end face. A flow block is fixed inside the second ventilation hole. The flow block is located on the rotation path of the first ventilation hole. The flow block and the first ventilation hole are adapted to each other in size. One end of the flow block communicates with the inside of the heat dissipation shell, and the other end passes through the two side walls of the flow block and is located on the outside of the heat dissipation shell.

[0013] This utility model further explains that a motor is installed inside the motor bushing, and a pulley is fixed on the output end of the motor. The pulley is in contact with the second motor shaft. When the motor is started, it drives the pulley to contact the second motor shaft, thereby driving the motor bushing to rotate.

[0014] The present invention further explains that the converter housing is provided with a plurality of ventilation ducts, the plurality of ventilation ducts are connected to a plurality of ventilation holes, the ventilation holes correspond to and are adapted to the ventilation ducts, and the plurality of ventilation holes are located on the rotation path of the ventilation ducts.

[0015] The present invention further describes that a lever is rotatably connected to the converter housing. The lever includes a drive plate and a rotating plate. The drive plate passes through the converter housing and is rotatably connected to a cylinder. The other end of the cylinder is rotatably connected to the inner wall of the converter housing. The rotating plate contacts the heat dissipation assembly to drive the rotating rod to rotate.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are: This utility model,

[0017] (1) By setting two heat dissipation modes, the system can automatically switch according to the actual heat generated by the converter. This flexible heat dissipation mode adjustment function enables the heat dissipation device to adapt to the heat dissipation requirements of the converter under different loads, thereby improving the intelligence level and reliability of the heat dissipation system. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the heat dissipation component according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram showing the location of the second ventilation hole in an embodiment of this utility model;

[0023] Figure 5 This is a schematic diagram of the three positions of the ventilation holes in an embodiment of this utility model;

[0024] In the diagram: 1. Converter housing; 101. Rotating rod; 102. Ventilation hole one; 103. Sealing block; 104. Elastic rope; 2. Cooling fan; 201. Motor shaft one; 202. Blade one; 203. Cooling pipe one; 204. Cooling pipe two; 3. Cooling assembly; 301. Cooling housing; 302. Motor shaft two; 303. Cylinder; 304. Motor bushing; 305. Blade two; 306. Turbine; 307. Ventilation hole two; 308. Flow block; 309. Motor; 310. Pulley; 311. Ventilation duct; 312. Ventilation hole three; 313. Paddle shifter. Detailed Implementation

[0025] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-5 The present invention provides a technical solution: an internal heat dissipation device for testing and developing a grid-type energy storage converter, including a converter housing 1.

[0027] like Figure 1 As shown, two cooling fans 2 are installed inside the converter housing 1. The two cooling fans 2 are symmetrically arranged on both sides of the converter housing 1. Each cooling fan 2 includes a motor shaft 201. The motor shaft 201 is hollow inside and has several blades 202 arrayed on its outer diameter. One end of the motor shaft 201 is located inside the converter housing 1, and the other end passes through the converter housing 1 and is rotatably connected to a rotating rod 101 and communicates with the motor shaft 201. A heat dissipation component 3 is provided at the other end of the rotating rod 101.

[0028] like Figure 2-5 As shown, one end of each of the two motor shafts 201 located inside the converter housing 1 is fixed with a heat dissipation pipe 203. The other end of the heat dissipation pipe 203 is fixed to the converter housing 1 on the same side as the motor shaft 201. The two heat dissipation pipes 203 are connected around the outside of the converter housing 1 through a heat dissipation pipe 204. The heat dissipation pipe 204 exchanges heat with the external environment to achieve a heat dissipation effect.

[0029] The heat dissipation assembly 3 includes a heat dissipation shell 301, within which two motor shafts 302 are disposed. The two motor shafts 302 are hollow inside and pass through the side walls of the heat dissipation shell 301, rotatably connected to and communicating with the rotating rod 101. The outer diameters of the two motor shafts 302 are fixed to the heat dissipation shell 301. A motor bushing 304 is rotatably connected to the outer diameters of the two motor shafts 302 inside the heat dissipation shell 301. The motor bushing 304 is used to connect the two motor shafts 302. Several blades 305 are arrayed on the outer diameter of the motor bushing 304. The windward surface of the blades 305 is arranged perpendicular to the rotation axis of the motor bushing 304, and the radial width of the blades 305 is greater than the axial height. A turbine 306 is fixed on the inner diameter of the motor bushing 304, and the turbine 306 is located between the two motor shafts 302.

[0030] When the airflow direction is parallel to the rotation axis, the airflow can pass through the axial end face of blade 2 305 without obstruction; when the airflow direction is perpendicular to the rotation axis, the airflow can act on the windward side of blade 2 305 and generate torque around the rotation axis.

[0031] The motor shaft 201 rotates under the drive of the drive device, and the blades 202 arrayed on its outer diameter rotate accordingly. The rotation of the blades 202 agitates the air inside the converter housing 1, forming an airflow. This airflow is blown outwards from the converter housing 1 through the ventilation duct 311, thereby transferring the heat generated inside the converter into the interior of the heat dissipation housing 301 through the airflow and ventilation duct 311 and impacting the surface of the blades 305, thus driving the motor shaft sleeve 304 to rotate.

[0032] The converter housing 1 has a ventilation hole 102, which connects the inside and outside of the converter housing 1. A sealing block 103 is provided inside the ventilation hole 102 inside the converter housing 1. The two ends of the sealing block 103 are connected to the inner wall of the converter housing 1 by elastic ropes 104 to provide the sealing block 103 with a reset capability.

[0033] The heat dissipation housing 301 has a second ventilation hole 307 and several third ventilation holes 312 on its end face. A flow block 308 is fixed inside the second ventilation hole 307. The flow block 308 is located on the rotation path of the first ventilation hole 102. The flow block 308 and the first ventilation hole 102 are adapted to each other. One end of the flow block 308 communicates with the inside of the heat dissipation housing 301, and the other end passes through the two side walls of the flow block 308 and is located on the outside of the heat dissipation housing 301.

[0034] By rotating the rotating rod 101, the heat dissipation shell 301 is driven to rotate around the inverter shell 1. When the flow block 308 rotates to the ventilation hole 102, it lifts the sealing block 103. The interior of the heat dissipation shell 301 and the inverter shell 1 are connected through the flow block 308.

[0035] A motor 309 is installed inside the motor bushing 304. A pulley 310 is fixed on the output end of the motor 309. The pulley 310 is in contact with the motor shaft 302. When the motor 309 is started, it drives the pulley 310 to contact the motor shaft 302, thereby driving the motor bushing 304 to rotate.

[0036] The converter housing 1 is provided with a plurality of ventilation ducts 311, which are connected to a plurality of ventilation holes 312. The ventilation holes 312 are located in positions corresponding to and adapted to the ventilation ducts 311, and the ventilation holes 312 are located on the rotation path of the ventilation ducts 311.

[0037] A lever 313 is rotatably connected to the converter housing 1. The lever 313 includes a drive plate and a rotating plate. The drive plate passes through the converter housing 1 and is rotatably connected to a cylinder 303. The other end of the cylinder 303 is rotatably connected to the inner wall of the converter housing 1. The rotating plate contacts the heat dissipation assembly 3 to drive the rotating rod 101 to rotate.

[0038] By activating the cylinder 303, the cylinder 303 drives the paddle 313 to rotate, and the paddle 313 drives the heat dissipation assembly 3 to rotate around the inverter housing 1 through the heat dissipation assembly 3.

[0039] The liquid cooling medium is an aqueous solution of ethylene glycol with a volume fraction of 50%.

[0040] Working principle: Two cooling fans 2 are symmetrically arranged on both sides of the converter housing 1. The motor shaft 201 rotates under the drive of the drive device, and the blades 202 arrayed on its outer diameter rotate accordingly. The rotation of the blades 202 agitates the air inside the converter housing 1, forming an airflow, which is blown outwards from the converter housing 1 through the ventilation duct 311, thereby initially dissipating the heat generated inside the converter into the surrounding air.

[0041] Initially, ventilation duct 311 is connected to ventilation hole 312. The heat generated inside the converter enters the interior of the heat sink shell 301 through airflow and impacts the surface of blade 2 305, thereby driving the motor shaft sleeve 304 to rotate. The motor shaft sleeve 304 drives the turbine 306 to rotate. The rotation of the turbine 306 accelerates the circulation of the cooling medium inside the motor shaft 1 201, motor shaft 2 302, rotating rod 101, heat sink 1 203 and heat sink 2 204, further accelerating the heat dissipation efficiency.

[0042] The airflow inside the heat dissipation housing 301 is dissipated into the surrounding air through the flow block 308.

[0043] When the inverter generates too much heat and this mode cannot completely cool it, the cylinder 303 is activated. The cylinder 303 drives the paddle 313 to rotate, which in turn drives the heat dissipation assembly 3 to rotate. Since the flow block 308 is located on the rotation path of the ventilation hole 102, one end is connected to the inside of the heat dissipation shell 301, and the other end passes through the two side walls of the flow block 308 and is located outside the heat dissipation shell 301. After the flow block 308 is connected to the ventilation hole 102, the motor 309 is activated. After the motor 309 is activated, the pulley 310 fixed at its output end contacts the motor shaft 302. Through friction, the motor shaft sleeve 304 is driven to rotate, which in turn drives the blade 305 to rotate. The rotation of the blade 305 will accelerate the air flow inside the heat dissipation shell 301. At the same time, the rotation of the turbine 306 will further enhance the circulation of the cooling medium and improve the heat dissipation efficiency.

[0044] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model, 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, and therefore should not be construed as a limitation of this utility model.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An internal heat dissipation device for testing and developing a grid-type energy storage converter, comprising a converter housing (1), characterized in that: Two cooling fans (2) are symmetrically arranged inside the converter housing (1). The cooling fan (2) includes a motor shaft (201). The motor shaft (201) is hollow inside and has several blades (202) arranged on its outer diameter. One end of the motor shaft (201) is located inside the converter housing (1), and the other end passes through the converter housing (1) and is rotatably connected to a rotating rod (101) and communicates with the motor shaft (201). One end of each of the two motor shafts (201) is fixed with a heat dissipation pipe (203) inside the converter housing (1). The other end of the heat dissipation pipe (203) is fixed to the converter housing (1) on the same side as the motor shaft (201). The two heat dissipation pipes (203) are connected around the outside of the converter housing (1) through a heat dissipation pipe (204). A heat dissipation assembly (3) is provided at the other end of the rotating rod (101). The heat dissipation assembly (3) includes a heat dissipation shell (301). Two hollow motor shafts (302) are provided inside the heat dissipation shell (301). The two motor shafts (302) pass through the side walls of the heat dissipation shell (301) and are rotatably connected to and communicate with the rotating rod (101). The outer diameter of the two motor shafts (302) is fixed to the heat dissipation shell (301) and located inside the heat dissipation shell (301). A motor bushing (304) is rotatably connected to the outer diameter of the two motor shafts (302). Several blades (305) are arranged on the outer diameter of the motor bushing (304). The windward surface of the blades (305) is arranged perpendicular to the rotation axis of the motor bushing (304), and the radial width of the blades (305) is greater than the axial height. A turbine (306) is fixed on the inner diameter of the motor bushing (304), and the turbine (306) is located between the two motor shafts (302).

2. The internal heat dissipation device for testing and developing a grid-type energy storage converter according to claim 1, characterized in that: The converter housing (1) is provided with a ventilation hole (102), which connects the inside and outside of the converter housing (1). A sealing block (103) is provided inside the ventilation hole (102) inside the converter housing (1). The two ends of the sealing block (103) are connected to the inner wall of the converter housing (1) by elastic ropes (104).

3. The internal heat dissipation device for testing and developing a grid-type energy storage converter according to claim 2, characterized in that: The heat dissipation shell (301) has a second ventilation hole (307) and several third ventilation holes (312) on its end face. A flow block (308) is fixed inside the second ventilation hole (307). The flow block (308) is located on the rotation path of the first ventilation hole (102). The flow block (308) and the first ventilation hole (102) are of the same size. One end of the flow block (308) is connected to the inside of the heat dissipation shell (301), and the other end passes through the two side walls of the flow block (308) and is located outside the heat dissipation shell (301).

4. The internal heat dissipation device for testing and developing a grid-type energy storage converter according to claim 3, characterized in that: A motor (309) is installed inside the motor bushing (304). A pulley (310) is fixed on the output end of the motor (309). The pulley (310) is in contact with the second motor shaft (302). The motor (309) starts and drives the pulley (310) to contact the second motor shaft (302), thereby driving the motor bushing (304) to rotate.

5. The internal heat dissipation device for testing and developing a grid-type energy storage converter according to claim 4, characterized in that: The converter housing (1) is provided with a plurality of ventilation ducts (311), the plurality of ventilation ducts (311) are connected to a plurality of ventilation holes (312), the ventilation holes (312) are corresponding to and adapted to the ventilation ducts (311), and the plurality of ventilation holes (312) are located on the rotation path of the ventilation ducts (311).

6. The internal heat dissipation device for testing and developing a grid-type energy storage converter according to claim 5, characterized in that: A lever (313) is rotatably connected to the converter housing (1). The lever (313) includes a drive plate and a rotating plate. The drive plate passes through the converter housing (1) and is rotatably connected to a cylinder (303). The other end of the cylinder (303) is rotatably connected to the inner wall of the converter housing (1). The rotating plate contacts the heat dissipation assembly (3) to drive the rotating rod (101) to rotate.

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