A fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converters

Abstract

This invention relates to the field of heat dissipation technology for energy storage converters, specifically a fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converters. The structure includes an energy storage converter housing and a chamber unit installed inside the housing. The chamber unit has an internal partition that divides its interior into a first air chamber and a second liquid chamber. An airflow drive device is installed inside the first air chamber. This invention's dual-cavity heat dissipation structure achieves heat dissipation through airflow circulation within the energy storage converter housing and the first air chamber, resulting in a fully enclosed, ventless energy storage converter housing without any shielding gaps caused by ventilation holes.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation technology for energy storage converters, specifically a fully enclosed dual-cavity heat dissipation structure for energy storage converters without ventilation holes. Background Technology

[0002] Energy storage converters are the core hub devices of electrochemical energy storage systems, positioned between the energy storage battery and the power grid. They enable bidirectional AC / DC conversion and intelligent charge / discharge control. Internally, they consist of a bidirectional DC / AC converter bridge, filter circuits, power switching devices, etc. The components are complex and generate a lot of heat. Existing technologies for heat dissipation of energy storage converters, such as the heat dissipation structure for energy storage converters disclosed in CN223613665U, describe a method where: when the fan is working, external air is introduced through the air inlet grille, and under the action of the first air guide plate, the local airflow velocity of the lower outer plate of the upper shell is accelerated, which, combined with the internal design of the upper shell, enhances the heat dissipation from the shell. As described above, most of these methods use a fan in conjunction with an air inlet grille or ventilation holes.

[0003] It has the following drawbacks: due to the setting of ventilation holes, the protective effect of the energy storage converter shell will be greatly reduced, and it will basically not have the effect of dustproof and moisture-proof. Furthermore, the electromagnetic shielding effect will be weakened, and the holes in the ventilation holes will cause shielding leakage, resulting in a significant reduction in electromagnetic shielding effectiveness. Summary of the Invention

[0004] The purpose of this invention is to provide a fully enclosed dual-cavity heat dissipation structure for an energy storage converter without ventilation holes, so that the energy storage converter can achieve heat dissipation while having a higher protection effect and electromagnetic shielding effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fully enclosed, ventless dual-cavity heat dissipation structure for an energy storage converter, comprising an energy storage converter housing and a chamber unit installed inside the energy storage converter housing. The chamber unit has an internal partition that divides the inner cavity of the chamber unit into a first gas chamber and a second liquid chamber. The first gas chamber is equipped with an airflow driving device, which drives the gas inside the energy storage converter housing to circulate within the first gas chamber. The second liquid chamber is used for the flow of a liquid cooling medium, which can exchange heat with the gas flowing through the first gas chamber via the internal partition, thereby achieving gas cooling.

[0006] The outer wall of the chamber unit is provided with an attached side chamber, which is connected to the inner cavity of the first air chamber. An elastic vibrating diaphragm is installed inside the attached side chamber, and a thrusting component is provided on one side of the elastic vibrating diaphragm. The thrusting component is used to drive the elastic vibrating diaphragm to reciprocate and vibrate into the attached side chamber, thereby causing the gas flowing in the first air chamber to fluctuate.

[0007] The punching assembly includes a pressure plate that is attached and fixed to an elastic vibrating diaphragm, and a limiting punch shaft that is fixed on the pressure plate; a fixed horizontal plate is fixedly installed inside the wall-mounted side compartment, and the limiting punch shaft passes through the fixed horizontal plate.

[0008] A connecting spring is provided between the pressing plate and the fixed horizontal plate. The connecting spring is used to apply an elastic force to the pressing plate, so that the pressing plate maintains the tendency to move towards the fixed horizontal plate.

[0009] An extended back plate is fixed to the wall-mounted side compartment. A sliding track shaft is connected between the fixed horizontal plate and the extended back plate. A magnetic slider is slidably mounted on the sliding track shaft. A thrust spring is sleeved on the sliding track shaft. The thrust spring is used to apply a thrust to the magnetic slider, so that the magnetic slider maintains the tendency to move in the direction of the limiting thrust shaft. The elastic force provided by the connecting spring is greater than the elastic force provided by the thrust spring.

[0010] An electromagnet is fixedly installed on the extended back plate. When the electromagnet is energized, it can generate a magnetic attraction force, attracting the magnetic slider to move away from the limit punch axis.

[0011] The extended back plate has an internal air cavity, and the sliding track shaft has an internal air cavity. The internal air cavities are interconnected. When the magnetic slider slides along the outer wall of the sliding track shaft, it can generate heat through friction with the sliding track shaft, heating the gas in the internal air cavities. An amplitude control component is connected to the outside of the internal air cavity. When the gas temperature in the internal air cavity is lower than a set threshold, the amplitude control component controls the amplitude of the elastic diaphragm to a smaller state; when the gas temperature in the internal air cavity is higher than the set threshold, the amplitude control component controls the amplitude of the elastic diaphragm to a larger state.

[0012] The amplitude control component includes an integrated cylinder body located on the wall-mounted side compartment. The integrated cylinder body is connected to the air chamber inside the plate, and a piston section is provided inside the integrated cylinder body.

[0013] A switching action groove is provided on the fixed horizontal plate, and an amplitude limiting slider is slidably provided in the switching action groove; a connecting rod is fixedly connected between the amplitude limiting slider and the piston part, and the piston part can drive the amplitude limiting slider to move back and forth through the connecting rod; a tension spring is connected to one side of the piston part, and the tension spring is used to apply tension to the piston part, so that the piston part maintains the tendency to move away from the connecting rod.

[0014] The magnetic slider is provided with a release groove; when the gas temperature in the gas cavity inside the plate is lower than the set threshold, the amplitude limiting slider and the release groove are misaligned, and the amplitude limiting slider limits the stroke of the magnetic slider; when the gas temperature in the gas cavity inside the plate is higher than the set threshold, the amplitude limiting slider and the release groove are aligned, so that the amplitude limiting slider releases the stroke limit of the magnetic slider.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The dual-cavity heat dissipation structure of the energy storage converter of the present invention achieves heat dissipation by circulating airflow in the energy storage converter shell and the first air cavity. This enables the energy storage converter shell to be completely sealed without ventilation holes, which not only improves the protection level and extends the life of internal components, but also the complete and sealed metal shell forms a Faraday cage, without any shielding gaps caused by ventilation holes.

[0016] 2. By combining the attached side chamber, elastic vibration diaphragm and thrust assembly, the present invention enables the gas pressure to fluctuate periodically during the circulation of gas inside the energy storage converter housing. Due to the complex structure of the components and the large number of dead angles, the pulsating pressure wave and lateral velocity component of the fluctuating airflow can penetrate into the gaps, grooves and leeward side of the components that the stable airflow cannot reach, dispersing the hot air in the stagnant area and reducing the temperature difference in the heat dissipation area.

[0017] 3. By combining the internal air cavity and amplitude control components, this invention enables the amplitude of the elastic vibrating diaphragm to be limited during initial oscillation. After a certain period of operation, the limitation is automatically lifted, and the amplitude is gradually increased, allowing the stress to slowly climb, the polymer chains to gradually stretch, and the temperature to rise before entering a large amplitude state. This reduces the rate of microcrack formation and extends the service life of the elastic vibrating diaphragm. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram showing the location of the storage box unit of the present invention.

[0020] Figure 3 This is a schematic diagram of the storage box unit of the present invention.

[0021] Figure 4 This is a front view of the storage box unit of the present invention.

[0022] Figure 5 for Figure 4 Cross-sectional view at point AA.

[0023] Figure 6 This is a cross-sectional view of the attached side compartment.

[0024] Figure 7 for Figure 4 Cross-sectional view at point BB.

[0025] Figure 8 This is a top view of the storage box unit of the present invention.

[0026] Figure 9 for Figure 8 Cross-sectional view at point CC.

[0027] Figure 10 for Figure 9 Enlarged view of point A in the middle.

[0028] Figure 11 This is a three-dimensional half-section view of the horizontal angle of the storage box unit of the present invention.

[0029] Figure 12 This is a three-dimensional half-section view of the horizontal angle of the attached side compartment of the present invention.

[0030] In the diagram: 1. Energy storage converter housing; 2. Chamber unit; 3. Chamber partition; 4. First gas chamber; 5. Second liquid chamber; 6. Airflow drive device; 7. Attached side chamber; 8. Elastic vibrating diaphragm; 801. Pressure plate; 802. Limiting punch shaft; 803. Fixed cross plate; 804. Connecting spring; 805. Sliding track shaft; 806. Extension back plate; 807. Magnetic slider; 808. Reverse thrust spring; 80 9. Electromagnet; 9. Inner plate air chamber; 901. Inner shaft air chamber; 902. Integrated cylinder body; 903. Piston part; 904. Switching action groove; 905. Amplitude limiting slider; 906. Connecting rod; 907. Release groove; 908. Tension spring; 101. Housing wall hole; 201. Liquid cooling medium pipe; 301. First fin; 302. Second fin; 601. Embedded slot; 810. Slide body. Detailed Implementation

[0031] The technical solutions of 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.

[0032] Please see Figures 1 to 12 This invention provides a technical solution: a fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converters. This invention aims to solve the problem of low heat dissipation efficiency in traditional energy storage converters. Specific embodiments are as follows: Example 1, please refer to Figure 1 This shows the external shape of the energy storage converter housing 1; Please refer to Figure 2 and Figure 3 As shown, a structure for auxiliary heat dissipation of the energy storage converter is provided on one side of the energy storage converter housing 1, that is, on the side away from the electrical components and main components inside the energy storage converter housing 1. This invention employs a hybrid heat dissipation method, combining air-cooled heat exchange with heat removal using a liquid cooling medium. In this embodiment, the air-cooled heat exchange is not a traditional absorption and dissipation of heat, but rather the heat inside the energy storage converter housing 1 is transferred to the liquid cooling medium via circulating air through a heat exchange structure, and then further dissipated through the liquid cooling medium. Pure water or oil can be used as the liquid cooling medium. These media rely on their thermal conductivity and boiling point characteristics to achieve heat exchange, and the operating temperature can be adjusted according to operating conditions, such as controlling the medium's operating temperature below 10°C.

[0033] Specifically, the present invention includes a heat exchange chamber unit 2, which has the function of air-cooled heat exchange to exchange heat to a liquid cooling medium for heat dissipation. See reference [link to relevant documentation] for details. Figure 2 and Figure 3 The storage box unit 2 has an air-cooled heat exchange structure on the side closer to the inside of the energy storage converter housing 1, and a liquid cooling medium heat exchange structure on the side farther away from the inside of the energy storage converter housing 1. refer to Figure 7 The air-cooled heat exchange structure and the liquid cooling medium heat exchange structure are connected by an internal partition 3. The internal partition 3, based on the integral aluminum processing structure, separates the interior of the bin unit 2. The side closer to the interior of the energy storage converter housing 1 is the first air chamber 4, and the side farther away from the interior of the energy storage converter housing 1 is the second liquid chamber 5. The first fin 301 and the second fin 302 extend from the two sides of the internal partition 3, respectively. The first fin 301 is located in the first air chamber 4, and the second fin 302 is located in the second liquid chamber 5. The circulating air inside the first air chamber 4 comes into contact with the first fin 301. After the first fin 301 absorbs the heat from the circulating air, it is transferred to the second fin 302. The liquid cooling medium in the second liquid chamber 5 comes into contact with the second fin 302 and absorbs the heat conducted from the second fin 302. The liquid cooling medium in the second liquid chamber 5 is also circulating, which ensures that the heat can be discharged in time.

[0034] Specifically, the second liquid chamber 5 in the chamber unit 2 is fitted to the energy storage converter housing 1 on the side away from the internal partition 3. Two sets of liquid cooling medium pipes 201 are provided on the side wall of the second liquid chamber 5 away from the internal partition 3. One set of liquid cooling medium pipes 201 is connected to the liquid cooling medium input pipe, and the other set of liquid cooling medium pipes 201 is connected to the liquid cooling medium output pipe, so that the liquid cooling medium can circulate inside the second liquid chamber 5.

[0035] Liquid cooling medium connectors 201 are respectively provided on both sides of the second liquid chamber 5 and communicate with the second liquid chamber 5 so that the liquid cooling medium can contact the second fins 302 as much as possible when flowing in the second liquid chamber 5, so as to achieve better heat exchange; the liquid cooling medium connectors 201 extend to the outside through the corresponding shell wall hole 101 opened on the energy storage converter housing 1. A rubber ring is provided at the connection between the housing wall hole 101 and the liquid cooling medium pipe 201. The rubber ring separates the housing wall hole 101 from the liquid cooling medium pipe 201, providing a certain degree of protection.

[0036] In Example 2, the energy storage converter model and size to which this invention can be applied are not limited. When the depth of the energy storage converter housing 1 is less than 50cm, each set of liquid cooling medium connecting pipes 201 can be set to one. When the depth of the energy storage converter housing 1 is less than 30cm, the two sets of liquid cooling medium connecting pipes 201 can be symmetrically arranged. When the size of the energy storage converter housing 1 is between 30-50cm, the two sets of liquid cooling medium connecting pipes 201 can be staggered, that is, the two sets of liquid cooling medium connecting pipes 201 are respectively located at opposite angles of the second liquid cavity 5, which is conducive to the flow of liquid cooling medium and sufficient heat exchange.

[0037] In Example 3, the energy storage converter model and size that can be applied to this invention are not limited. When the depth of the energy storage converter housing 1 exceeds 50cm, that is, there are no less than 2 liquid cooling medium inlets 201 in each group. That is, there are no less than 2 liquid cooling medium inlets 201 for liquid cooling medium input and no less than 2 liquid cooling medium inlets 201 for liquid cooling medium discharge. Since the volume of the corresponding second liquid chamber 5 is too large, this can improve the heat exchange efficiency of the liquid cooling medium.

[0038] Please refer to Figure 5 and Figure 7 , Figure 5 A bird's-eye view. Figure 7 From a side view, it can be seen that the side closest to the inside of the energy storage converter housing 1 is the first air chamber 4. An embedded slot 601 is opened in the first air chamber 4. The airflow drive device 6 is inserted into the first air chamber 4 through the embedded slot 601 and fixed in the embedded slot 601. The airflow drive device 6 can drive the internal airflow in one direction, allowing the hot air to fully contact the first fin 301, thereby achieving the purpose of heat transfer and conduction. After heat exchange, the cooled air can circulate in the energy storage converter housing 1 and participate in the next heat exchange process. The heat absorbed by the first fin 301 is transferred to the second fin 302 through the main body of the internal partition 3, and then heat dissipation is achieved through the liquid cooling medium in the second liquid chamber 5.

[0039] In embodiment four, the airflow drive device 6 is fixed to the chamber unit 2 by through screws, which facilitates the maintenance of the airflow drive device 6. When maintenance is required, it is only necessary to remove the screws and disconnect the wires used for electrical connection to completely disassemble the airflow drive device 6, so as to achieve the purpose of quick repair and replacement. The airflow drive device 6 is preferably an axial flow fan.

[0040] In embodiment five, the present invention provides a wall-mounted side compartment 7 on the outer wall of the compartment unit 2. The wall-mounted side compartment 7 is connected to the inner cavity of the first air chamber 4. An elastic vibration diaphragm 8 is installed inside the wall-mounted side compartment 7. The elastic vibration diaphragm 8 is made of rubber. A thrusting component is provided on one side of the elastic vibration diaphragm 8. The thrusting component causes the elastic vibration diaphragm 8 to impact and vibrate towards the interior of the wall-mounted side compartment 7, thereby causing the air flowing through the first air chamber 4 to fluctuate.

[0041] The punching assembly includes a pressure plate 801 fixed on the elastic vibrating diaphragm 8 and a limiting punch 802 fixed on the pressure plate 801. The pressure plate 801 is fixed on the elastic vibrating diaphragm 8 with glue. A fixed horizontal plate 803 is fixedly installed inside the wall-mounted side compartment 7, and the limiting punch 802 passes through the fixed horizontal plate 803.

[0042] like Figure 10 As shown, a connecting spring 804 is provided between the pressing plate 801 and the fixed horizontal plate 803. The connecting spring 804 applies a spring force to the pressing plate 801, so that the pressing plate 801 tends to move towards the fixed horizontal plate 803.

[0043] An extended back plate 806 is fixedly installed on the wall-mounted side compartment 7. A sliding track shaft 805 is connected between the fixed cross plate 803 and the extended back plate 806. A magnetic slider 807 is slidably installed on the sliding track shaft 805. A push spring 808 is sleeved on the sliding track shaft 805. The push spring 808 applies a pushing force to the magnetic slider 807, causing the magnetic slider 807 to move in the direction of the limiting punch shaft 802. The elastic force provided by the connecting spring 804 is greater than the elastic force provided by the push spring 808.

[0044] An electromagnet 809 is fixedly installed on the extension back plate 806. When energized, the electromagnet 809 generates magnetic force, attracting the magnetic slider 807 to move away from the location of the limit punch shaft 802. Figure 6 As shown, a slide body 810 is integrally formed and fixed on the outside of the magnetic slider 807. The magnetic slider 807 is slidably sleeved on the outside of the sliding track shaft 805 through the slide body 810. When the magnetic slider 807 is magnetically attracted and moved by the electromagnet 809, the slide body 810 will slide and rub against the sliding track shaft 805.

[0045] In embodiment six, the present invention further includes an internal air cavity 9 in the extended back plate 806 and an internal air cavity 901 in the sliding track shaft 805. The air chamber 9 inside the plate and the air chamber 901 inside the shaft are interconnected. When the magnetic slider 807 slides along the outside of the sliding track shaft 805, it will generate heat through friction with the sliding track shaft 805, thus heating the gas in the air chamber 901 inside the shaft and the air chamber 9 inside the plate. An amplitude control component is provided outside the air chamber 9 inside the plate. When the gas temperature in the air chamber 9 inside the plate is lower than the set value, the amplitude control component controls the amplitude of the elastic diaphragm 8 to be in a smaller state. When the gas temperature in the air chamber 9 inside the plate is higher than the set value, the amplitude control component controls the amplitude of the elastic diaphragm 8 to be in a larger state.

[0046] The amplitude control component includes an integrated cylinder 902 mounted on the wall-mounted side compartment 7. The integrated cylinder 902 communicates with the air chamber 9 inside the plate, and a piston 903 is disposed within the integrated cylinder 902. A switching action groove 904 is provided on the fixed cross plate 803, and an amplitude limiting slider 905 is slidably disposed in the switching action groove 904. A connecting rod 906 is fixedly connected between the amplitude limiting slider 905 and the piston 903. The piston 903 drives the amplitude limiting slider 905 to move via the connecting rod 906. A tension spring 908 is connected to one side of the piston 903, and the tension spring 908 applies tension to the piston 903, causing the piston 903 to tend to move away from the direction where the connecting rod 906 is located.

[0047] The magnetic slider 807 has a release groove 907. When the gas temperature in the gas cavity 9 inside the plate is lower than the set value, the amplitude limiting slider 905 and the release groove 907 are misaligned, and the amplitude limiting slider 905 limits the stroke of the magnetic slider 807. When the gas temperature in the gas cavity 9 inside the plate is higher than the set value, the amplitude limiting slider 905 and the release groove 907 are aligned, so that the amplitude limiting slider 905 loses its limit on the stroke of the magnetic slider 807.

[0048] When using this invention, as Figure 2 As shown, the storage unit 2 is installed inside the energy storage converter housing 1. The energy storage converter housing 1 is a fully enclosed design without ventilation holes. Figure 5 As shown, the black arrow indicates the airflow path. Driven by the airflow drive device 6, the airflow is drawn in through one side opening of the first air chamber 4 and discharged through the other side opening, forming a circular circulation path inside the energy storage converter housing 1, so that the components inside the energy storage converter housing 1 can be cooled.

[0049] The airflow flowing through the first air chamber 4 conducts heat to the first fin 301, and then exchanges heat with the liquid cooling medium in the second liquid chamber 5 through the internal partition 3 and the second fin 302, thereby achieving heat removal.

[0050] In this invention, a temperature monitoring sensor can also be installed inside the energy storage converter housing 1. When the internal temperature of the energy storage converter housing 1 exceeds a set value, such as 45°C, an intermittent current is applied to the electromagnet 809, such as... Figure 10 As shown, when the electromagnet 809 is energized, it generates a magnetic force that attracts the magnetic slider 807 to move toward it. During this process, the magnetic slider 807 compresses and stores the force of the spring 808.

[0051] like Figure 10 As shown, when the electromagnet 809 is de-energized, the magnetic force disappears, and the magnetic slider 807 moves to the left under the thrust of the reverse spring 808, impacting the end of the limiting punch 802, causing the limiting punch 802 and the pressure plate 801 to move to the left. The pressure plate 801 impacts and compresses the elastic vibrating diaphragm 8, and the volume of the semi-enclosed cavity formed by the attached side chamber 7 and the elastic vibrating diaphragm 8 is reduced instantaneously. The gas in the semi-enclosed cavity impacts and enters the first gas chamber 4, causing the gas pressure in the first gas chamber 4 to increase slightly instantaneously.

[0052] When the elastic diaphragm 8 is reset, the volume of the semi-enclosed cavity formed by the attached side chamber 7 and the elastic diaphragm 8 increases, and part of the gas in the first air chamber 4 enters the semi-enclosed cavity, causing the gas pressure in the first air chamber 4 to decrease slightly momentarily.

[0053] The cyclic action of the elastic vibrating diaphragm 8 causes the gas output from the first air chamber 4 to fluctuate periodically in intensity. Conventional constant current air cooling systems suffer from numerous backflow stagnation zones, dead corners, and leeward vortex zones due to the dense internal components, cables, bosses, grooves, and mounting brackets. The stable airflow is straight, and the boundary layer is difficult to separate after adhering to the surface of the components. There is almost no airflow exchange inside the gaps and grooves, and hot air accumulates in the stagnation zones for a long time. The local temperature is significantly higher than that of the mainstream airflow, forming hot spots with large temperature differences. These are the main overheating risk points for the power devices, inductors, and PCBs of the converter.

[0054] This invention induces periodic gas fluctuations, causing gas to be forced into a narrow cavity when the pressure increases and hot air to be extracted when the pressure drops. This process of repeated air exchange in dead corners is achieved. Furthermore, the periodic pressure fluctuations induce airflow vortices and secondary backflows, generating a large number of lateral velocity components perpendicular to the mainstream direction. These components impact the leeward side of components and the sidewalls of the grooves, disrupting the static thermal boundary layer attached to the wall, breaking the local stagnant eddies, and continuously drawing high-temperature gas into the main airflow to reduce the temperature difference in the heat dissipation area.

[0055] The following values ​​are based on the design of the energy storage converter housing 1 with a depth of 50cm: In this invention, the airflow driving device 6 is a 120mm axial flow fan with an air volume of 150-300m³ / h, which drives the wind speed in the first air chamber 4 to be 1-3m / s. Since the airflow driven by the airflow driving device 6 has a straight streamline and the boundary layer is not easy to separate after it is attached, the local temperature in the dead corner is usually significantly higher than that in the main channel. When the air temperature in the main channel is about 55-65℃, the temperature in the leeward dead corner area can reach 75-90℃.

[0056] When the elastic diaphragm 8 is activated: In this invention, the area A of the elastic diaphragm 8 is 100 square centimeters, the maximum amplitude Δx of the reciprocating motion of the thrusting component is 10mm, and the volume change of the elastic diaphragm 8 in a single action is ΔV≈A×Δx=0.1L; the frequency f of the elastic diaphragm 8 can reciprocate within the range of 10-20Hz, so the additional pulsating flow rate introduced is Q=ΔV×f=3.6-7.2m³ / h, which is about 2%-5% of the ground state air volume (150-300m³ / h).

[0057] The volume Vcavity of the semi-enclosed cavity formed by the attached side chamber 7 and the elastic vibrating diaphragm 8 can range from 0.5 to 1.0 L. The pressure increment brought by a single compression is approximately ΔP≈standard ambient atmospheric pressure × (ΔV / Vcavity)≈10-20 kPa, generating a pressure fluctuation of 10-20 kPa. The positive pressure pulse squeezes fresh cold air into the narrow gap in the dead corner. Then, the elastic vibrating diaphragm 8 rebounds, generating negative pressure, which draws out the heated air in the gap. This generates a shedding vortex and secondary backflow on the leeward side of the components, causing the temperature in the dead corner to drop by 10-18℃ to 62-72℃, reducing the temperature difference with the mainstream to 8-12℃, and significantly improving temperature uniformity.

[0058] In the above process, such as Figure 6 As shown, initially, the amplitude limiting slider 905 and the release groove 907 are misaligned. When the magnetic slider 807 impacts the limiting punch 802, after moving a certain distance, the magnetic slider 807 will interfere with the amplitude limiting slider 905, thus preventing the magnetic slider 807 from further impacting and pushing the limiting punch 802. Through the limiting effect of the amplitude limiting slider 905, the amplitude of the elastic vibration diaphragm 8 is driven to be small. The amplitude is specifically the extension length of the limiting punch 802 minus the extension length of the amplitude limiting slider 905.

[0059] As the magnetic slider 807 reciprocates, the sliding track shaft 805 is continuously heated by friction. This heating of the sliding track shaft 805 then heats the gas in its internal air chamber 901. Figure 12 As shown, since the air chamber 901 inside the shaft and the air chamber 9 inside the plate are connected, the gas in the air chamber 901 inside the shaft and the air chamber 9 inside the plate heat up synchronously.

[0060] As the gas in the gas chamber 9 inside the plate heats up, its volume expands, pushing the piston 903 to move. The piston 903, through the connecting rod 906, drives the amplitude limiting slider 905 to move, so that the amplitude limiting slider 905 gradually aligns with the release groove 907. When the amplitude limiting slider 905 is completely aligned with the release groove 907, the magnetic slider 807 moves towards the limiting punch 802, and the amplitude limiting slider 905 inserts into the release groove 907. At this time, the amplitude limiting slider 905 no longer limits the magnetic slider 807, causing the amplitude of the elastic vibrating diaphragm 8 to increase. The amplitude is specifically equal to the length of the limiting punch 802.

[0061] The overall performance is as follows: when the elastic diaphragm 8 initially oscillates, the amplitude is limited. After working for a certain period of time, the limitation is automatically lifted, and the amplitude is gradually increased, so that the stress slowly climbs up. After the temperature rises, it enters a large amplitude state, thus extending the service life of the elastic diaphragm 8.

[0062] In this invention, the specific values ​​are as follows: the gas in the internal air chamber 901 and the internal air chamber 9 is initially at normal pressure, and the volume of both is 300 cubic centimeters. When the gas temperature rises from 45°C to 55°C, according to Charles's Law and the pressure formula, the pressure increment ΔP is approximately 3.2 kPa. In this embodiment of the invention, the area of ​​the piston 903 is 10 square centimeters. According to the formula F=ΔP⋅S, the thrust generated is approximately 3.2 N. The 3.2 N thrust overcomes the elastic tension of the tension spring 908, pushing the amplitude limiting slider 905 to complete the switching action.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully enclosed, ventless dual-cavity heat dissipation structure for an energy storage converter, comprising an energy storage converter housing and a hopper unit installed inside the energy storage converter housing, characterized in that: The compartment unit is provided with an internal partition, which divides the inner cavity of the compartment unit into a first air cavity and a second liquid cavity. The first air chamber is equipped with an airflow driving device, which is used to drive the gas in the energy storage converter housing to circulate inside the first air chamber; the second liquid chamber is used to circulate liquid cooling medium, which can exchange heat with the gas flowing in the first air chamber through the internal partition to achieve gas cooling.

2. The fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converter according to claim 1, characterized in that: The outer wall of the compartment unit is provided with an attached side compartment, which is connected to the inner cavity of the first air chamber; An elastic vibrating diaphragm is installed inside the attached side chamber. A thrusting assembly is provided on one side of the elastic vibrating diaphragm. The thrusting assembly is used to drive the elastic vibrating diaphragm to reciprocate and vibrate inside the attached side chamber, thereby causing the gas flowing in the first air chamber to fluctuate.

3. The fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converter according to claim 2, characterized in that: The punching assembly includes a pressure plate that is attached and fixed to an elastic vibrating diaphragm, and a limiting punch shaft that is fixed to the pressure plate; A fixed horizontal plate is fixedly installed inside the attached side compartment, and the limiting punch shaft passes through the fixed horizontal plate.

4. The fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converter according to claim 3, characterized in that: A connecting spring is provided between the pressing plate and the fixed horizontal plate. The connecting spring is used to apply an elastic force to the pressing plate, so that the pressing plate maintains the tendency to move towards the fixed horizontal plate.

5. The fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converter according to claim 4, characterized in that: An extended back plate is fixed on the attached side compartment, and a sliding track shaft is connected between the fixed horizontal plate and the extended back plate. A magnetic slider is slidably mounted on the sliding track shaft. The sliding track shaft is fitted with a thrust spring, which is used to apply a thrust to the magnetic slider, so that the magnetic slider maintains the tendency to move in the direction of the limiting punch shaft. The elastic force provided by the connecting spring is greater than the elastic force provided by the reverse spring.

6. The fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converter according to claim 5, characterized in that: An electromagnet is fixedly installed on the extended back plate. When the electromagnet is energized, it can generate a magnetic attraction force, attracting the magnetic slider to move away from the limit punch axis.

7. The fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converter according to claim 5, characterized in that: The extended back plate has an internal air cavity, and the sliding track shaft has an internal air cavity. The internal air cavity of the plate and the internal air cavity of the shaft are interconnected. When the magnetic slider slides along the outer wall of the sliding track shaft, it can generate heat through friction with the sliding track shaft, which heats the gas in the internal air cavity of the shaft and the internal air cavity of the plate. An amplitude control component is connected to the outside of the air cavity inside the plate. When the gas temperature inside the air cavity is lower than a set threshold, the amplitude control component controls the amplitude of the elastic diaphragm to a smaller state; when the gas temperature inside the air cavity is higher than the set threshold, the amplitude control component controls the amplitude of the elastic diaphragm to a larger state.

8. The fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converter according to claim 7, characterized in that: The amplitude control component includes an integrated cylinder body located on the wall-mounted side compartment. The integrated cylinder body is connected to the air chamber inside the plate, and a piston section is provided inside the integrated cylinder body.

9. The fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converter according to claim 8, characterized in that: A switching action groove is provided on the fixed horizontal plate, and an amplitude limiting slider is slidably provided in the switching action groove; A connecting rod is fixedly connected between the amplitude limiting slider and the piston part. The piston part can drive the amplitude limiting slider to move back and forth through the connecting rod. A tension spring is connected to one side of the piston part. The tension spring is used to apply tension to the piston part, so that the piston part tends to move away from the connecting rod.

10. The fully enclosed, ventless dual-cavity heat dissipation structure for energy storage converter according to claim 9, characterized in that: The magnetic slider is provided with a release groove; when the gas temperature in the gas cavity inside the plate is lower than the set threshold, the amplitude limiting slider and the release groove are misaligned, and the amplitude limiting slider limits the stroke of the magnetic slider. When the gas temperature inside the air chamber of the plate is higher than the set threshold, the amplitude limit slider corresponds to the release groove position, so that the amplitude limit slider releases the travel limit of the magnetic slider.

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