Intelligent air-cooling heat dissipation system of energy storage converter and working method of intelligent air-cooling heat dissipation system

Abstract

The invention discloses an intelligent air-cooling heat dissipation system of an energy storage converter and a working method thereof, the system comprises a shell, an intelligent air-cooling heat dissipation structure and an electronic circuit layer, an upper layer space and a lower layer space are arranged in the shell, and the electronic circuit layer is arranged in the upper layer space; the intelligent air cooling heat dissipation structure is arranged in the lower layer space. By implementing the system disclosed by the invention, heat generated in the PCS can be effectively managed by optimizing a heat dissipation design and a control strategy, the overall performance and reliability of the system are improved, and the system can be ensured to keep an optimal working state in various environments.

Description

Technical Field

[0001] This invention relates to the field of new energy technology, and in particular to an intelligent air-cooled heat dissipation system for an energy storage converter and its working method. Background Technology

[0002] Power conversion systems (PCS) play an indispensable role in renewable energy generation, smart microgrids, and commercial and industrial energy storage. Their primary function is to achieve bidirectional power conversion: converting direct current (DC) to alternating current (AC) for grid use, and simultaneously converting AC power from the grid back to DC for storage. To ensure grid stability and economic efficiency, PCS requires high efficiency and reliability, including but not limited to improving power quality and supporting bidirectional power exchange. Furthermore, PCS must guarantee safe and stable operation to meet the flexibility and reliability requirements of modern power grids.

[0003] A power storage system (PCS) integrates various critical components, such as power semiconductor devices, inductors, capacitors, and auxiliary power supplies. These components generate significant heat during operation. If this heat is not effectively managed and dissipated, the system temperature will rise, impacting its normal operation. This manifests as derating, decreased efficiency, shortened lifespan, and reduced reliability. These problems not only directly affect the PCS's performance but also negatively impact the stability and economics of the entire power grid. Therefore, an effective heat dissipation solution is crucial for maintaining the PCS's optimal operating condition. In practical applications, when ambient temperature rises, the inlet temperature also increases, causing the internal heat-generating components to exceed set thresholds. This not only affects the efficiency and economics of the energy storage system but may also lead to overheating of critical components, thus impacting the system's lifespan and reliability.

[0004] Therefore, it is necessary to design a new system that can effectively manage the heat generated inside the PCS by optimizing the heat dissipation design and control strategies, thereby improving the overall performance and reliability of the system and ensuring that it can maintain its optimal working condition in various environments. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an intelligent air-cooled heat dissipation system for energy storage converters and its working method.

[0006] To solve the above-mentioned technical problems, the objective of this invention is achieved through the following technical solution: providing an intelligent air-cooled heat dissipation system for an energy storage converter, comprising: a housing, an intelligent air-cooled heat dissipation structure, and an electronic circuit layer, wherein the housing has an upper space and a lower space, the electronic circuit layer is placed in the upper space, and the intelligent air-cooled heat dissipation structure is placed in the lower space.

[0007] The further technical solution is as follows: the electronic circuit layer includes a power module.

[0008] The further technical solution is as follows: the housing is provided with an air inlet, and the air inlet is connected to the lower space.

[0009] The further technical solution is as follows: the intelligent air-cooled heat dissipation structure includes an inlet air temperature probe, a heat exchanger, a solenoid valve, a cooling fan, a power module heat sink, and an inverter inductor; the inlet air temperature probe is installed at the air inlet; the heat exchanger is connected to the water supply system through the solenoid valve; the cooling fan is placed between the heat exchanger and the power module heat sink, and the power module heat sink is connected to the power module; the inverter inductor is placed on one side of the power module heat sink.

[0010] The further technical solution is as follows: the intelligent air-cooled heat dissipation structure also includes a DSP control board, a first power electronic switch and a second power electronic switch, the heat dissipation fan is connected to the DSP control board through the first power electronic switch; the solenoid valve is connected to the DSP control board through the second power electronic switch.

[0011] The further technical solution is as follows: the intelligent air-cooled heat dissipation structure also includes a temperature sampling operational amplifier conditioning circuit; the temperature sampling operational amplifier conditioning circuit is connected to the inlet air temperature probe.

[0012] The further technical solution is that the heat exchanger includes a water-cooled heat exchanger.

[0013] The further technical solution is as follows: the cooling fan includes a speed-regulating cooling fan.

[0014] The further technical solution is as follows: the intelligent air-cooled heat dissipation structure also includes several temperature sensors for monitoring the surface temperature of the power module, and the temperature sensors are connected to the DSP control board.

[0015] In addition, to overcome the shortcomings of the prior art, the present invention also provides a method for operating the above-mentioned intelligent air-cooled heat dissipation system for energy storage converter, comprising:

[0016] When the system's output power is less than the set rated power, the DSP control board continuously monitors the temperature detection point and adjusts the speed of the cooling fan and whether the heat exchanger is turned on according to the temperature of the power module.

[0017] If the power module temperature exceeds the set value, the following steps will be taken in sequence: increase the cooling fan speed, activate the heat exchanger for cooling, reduce the output power, and enter the high temperature shutdown protection.

[0018] When the system's output power exceeds the set rated power, the fan speed is set proportionally, and dynamic adjustments are made when the temperature exceeds the limit.

[0019] Monitor the speed of the cooling fan to ensure that the speed is within a reasonable error range. If it exceeds the range, trigger an alarm or shutdown protection.

[0020] The advantages of this invention compared to existing technologies are as follows: By dividing the interior of the casing into upper and lower layers, the electronic circuitry layer is located in the upper layer to avoid heat sources, while the intelligent air-cooling structure is placed in the lower layer, closer to potential heat-generating components. This layout not only reduces heat conduction to critical electronic components but also utilizes natural convection to aid heat dissipation. Simultaneously, combined with an intelligent control strategy, the fan speed and the operating status of the water-cooled heat exchanger are dynamically adjusted based on real-time temperature monitoring data. This ensures that the system maintains optimal operating temperature even in high-temperature or enclosed environments, avoiding the risk of efficiency degradation or damage due to overheating. This guarantees stable and efficient operation of the PCS under various environmental conditions. This comprehensive approach, considering both hardware design and software control, greatly enhances the system's adaptability and reliability, achieving effective heat management within the PCS, thereby improving the overall performance and reliability of the system.

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A three-dimensional structural diagram of an intelligent air-cooled heat dissipation system for an energy storage converter provided in an embodiment of the present invention;

[0024] Figure 2 A circuit diagram of an intelligent air-cooled heat dissipation system for an energy storage converter provided in an embodiment of the present invention;

[0025] Explanation of the markings in the image:

[0026] 1. Housing; 2. Inlet air temperature probe; 3. Heat exchanger; 4. Solenoid valve; 5. Cooling fan; 6. Power module heat sink; 7. Inverter inductor. Detailed Implementation

[0027] 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, not all, of the embodiments of the present invention. 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.

[0028] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0029] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0030] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0031] As a key device connecting renewable energy generation, smart microgrids, and industrial and commercial energy storage with the power grid, bidirectional power converters (PCS) not only support bidirectional power conversion but also ensure grid stability and economy. Their efficient and reliable operation is crucial for maintaining the flexibility of modern power grids. However, internal PCS components such as power semiconductors and inductors generate significant heat during operation. Improper heat dissipation management can lead to increased system temperature, causing derating, reduced efficiency, shortened lifespan, and decreased reliability, negatively impacting PCS performance and the stability of the entire power grid. Therefore, in practical applications, adopting effective heat dissipation solutions to address the challenges posed by rising ambient temperatures is critical for maintaining the optimal condition of the PCS and the power grid it serves.

[0032] To this end, embodiments of the present invention provide an intelligent air-cooled heat dissipation system for energy storage converters and its working method, which effectively manages the heat generated inside the PCS by optimizing heat dissipation design and control strategies, improves the overall performance and reliability of the system, and ensures that it can maintain its optimal working state in various environments.

[0033] Specifically, this intelligent air-cooled heat dissipation system for the energy storage converter (PCS) utilizes upper and lower spaces within the housing 1 to house the electronic circuitry layer and the intelligent air-cooled heat dissipation structure, respectively. It employs components including an inlet air temperature probe 2, a heat exchanger 3, a solenoid valve 4, a speed-regulating cooling fan 5, and a power module heat sink 6. Combined with intelligent monitoring and adjustment by the DSP control board, it effectively manages the heat generated within the PCS. Specific measures include dynamically adjusting the speed of the cooling fan 5 and activating the heat exchanger 3 for cooling based on the power module temperature, while simultaneously monitoring and adjusting the operating status of the cooling fan 5 to ensure it operates within a reasonable range. These design and strategies guarantee that the system maintains optimal performance and reliability even under high output power or high temperature environments, avoiding efficiency degradation, shortened lifespan, and stability issues caused by overheating, thereby ensuring the stability and economy of the entire power grid.

[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0035] Please see Figure 1 A smart air-cooled heat dissipation system for an energy storage converter includes: a housing 1, a smart air-cooled heat dissipation structure, and an electronic circuit layer. The housing 1 has an upper space and a lower space. The electronic circuit layer is placed in the upper space, and the smart air-cooled heat dissipation structure is placed in the lower space.

[0036] In this embodiment, the system aims to address the problem that in high-temperature or enclosed environments, internal heat-generating components of the PCS, such as the power module and inverter inductor 7, can only operate at reduced power when exceeding a threshold temperature, thereby improving the system's lifespan, reliability, and economy. The system comprises the following main components:

[0037] Housing 1: Designed as a two-layer structure with upper and lower spaces. This design helps to separate the electronic circuitry layer from the heat dissipation structure, preventing heat from being directly conducted to the electronic components.

[0038] Intelligent air-cooled heat dissipation structure: Located in the lower space of the housing 1, this is the core part of the invention, used to quickly and effectively dissipate the heat generated by the power module and inverter inductor 7. This structure includes components such as the inlet air temperature probe 2, water-cooled heat exchanger 3, electromagnetic water valve, speed-regulating cooling fan 5, power module heat sink 6, and aluminum-cased inverter inductor 7. These components work together to ensure effective heat dissipation even in extreme environments.

[0039] Inlet air temperature probe 2: Installed at the air inlet to monitor the inlet air temperature in real time.

[0040] Water-cooled heat exchanger 3: Connected to the water supply system, it controls the water flow through an electromagnetic water valve under high temperature conditions to help cool the incoming air.

[0041] Speed-adjustable cooling fan 5: Adjusts the speed according to the PWM signal issued by the DSP control board to achieve precise airflow control.

[0042] Power module heat sink 6 and aluminum shell inverter inductor 7: These are used for heat dissipation of the power module and inverter inductor 7, respectively. The aluminum shell inverter inductor 7 is also potted to enhance the heat dissipation effect.

[0043] Electronic circuit layer: Located in the upper space of housing 1, it mainly includes the power control circuit and acquisition circuit of the PCS. Since its heat generation is relatively small, it can be dissipated through natural convection or the upper metal casing of the PCS.

[0044] In addition, the system includes a complex control logic that monitors the temperature of various key points via a DSP control board and dynamically adjusts the speed of the cooling fan 5 and whether to activate the water-cooled heat exchanger 3 accordingly, thereby maintaining the system within a safe operating temperature range. If the temperature exceeds the set safe range, a series of measures are taken, including increasing the fan speed, activating the heat exchanger 3 for cooling, reducing output power, and triggering high-temperature shutdown protection to ensure the stability and safety of the system.

[0045] In summary, this intelligent air-cooled heat dissipation system for energy storage converters, through its carefully designed physical layout and intelligent control strategy, can effectively manage the heat generated inside the PCS, improve the overall performance and reliability of the system, and ensure that it can maintain optimal working condition in various environments.

[0046] In one embodiment, the aforementioned electronic circuit layer includes a power module. As a core component, the power module's heat generation directly affects the system's operating efficiency and lifespan. Therefore, heat dissipation of the power module is specifically considered in the design.

[0047] In one embodiment, please refer to Figure 1 The aforementioned housing 1 is equipped with an air inlet that communicates with the lower space. This design ensures that outside air can directly enter the heat dissipation layer, improving heat dissipation efficiency. Simultaneously, an air inlet temperature probe 2 is installed at the air inlet to monitor the air temperature in real time, allowing for timely adjustments to the heat dissipation strategy.

[0048] In one embodiment, please refer to Figures 1 to 2 The aforementioned intelligent air-cooled heat dissipation structure includes an inlet air temperature probe 2, a heat exchanger 3, a solenoid valve 4, a cooling fan 5, a power module heat sink 6, and an inverter inductor 7. The inlet air temperature probe 2 is installed at the air inlet. The heat exchanger 3 is connected to the water supply system via the solenoid valve 4. The cooling fan 5 is placed between the heat exchanger 3 and the power module heat sink 6, and the power module heat sink 6 is connected to the power module. The inverter inductor 7 is placed on one side of the power module heat sink 6.

[0049] Specifically, the aforementioned intelligent air-cooling structure consists of several key components:

[0050] Inlet air temperature probe 2: Installed at the air inlet, responsible for monitoring the intake air temperature.

[0051] Heat exchanger 3: A water-cooled heat exchanger 3 is adopted, which is connected to the water supply system through a solenoid valve 4 to achieve cooling of the intake air.

[0052] Solenoid valve 4: Used to control water flow, automatically adjusting its opening or closing state according to the air intake temperature.

[0053] Cooling fan 5: Placed between heat exchanger 3 and power module heat sink 6, it enhances heat dissipation by accelerating airflow.

[0054] Power module heat sink 6: Directly connected to the power module, effectively conducting and dissipating heat.

[0055] Inverter inductor 7: Placed on one side of the power module heat sink 6 and potted with glue to improve heat dissipation efficiency.

[0056] In one embodiment, please refer to Figure 2 The aforementioned intelligent air-cooling structure also includes a DSP control board, a first power electronic switch, and a second power electronic switch. The cooling fan 5 is connected to the DSP control board via the first power electronic switch; the solenoid valve 4 is connected to the DSP control board via the second power electronic switch. This design enables precise control of the cooling fan 5 and the solenoid valve 4, ensuring stable system operation.

[0057] In one embodiment, please refer to Figure 2 The aforementioned intelligent air-cooled heat dissipation structure also includes a temperature sampling operational amplifier conditioning circuit; this circuit is connected to the inlet air temperature probe 2. It amplifies and processes the temperature signal, ensuring the DSP can accurately acquire ambient temperature information and thus make corresponding heat dissipation decisions.

[0058] In one embodiment, please refer to Figure 1 The aforementioned heat exchanger 3 includes a water-cooled heat exchanger 3. As an important component of the intelligent air-cooled heat dissipation system, the water-cooled heat exchanger 3 is mainly used to pre-cool the air entering the system when the ambient temperature is high or the heat generated during the operation of the PCS cannot be effectively dissipated by simple air cooling.

[0059] The advantages of this design are:

[0060] High-efficiency heat dissipation: The water-cooled heat exchanger 3 can more effectively reduce the intake air temperature, thereby improving the overall heat dissipation efficiency. Especially in high-temperature environments, when the ambient air temperature is close to or even exceeds the operating temperature threshold of the power module and inverter inductor 7, the use of water cooling technology can significantly enhance the heat dissipation effect and prevent critical components from overheating.

[0061] High adaptability: Since energy storage systems typically need to cope with various operating conditions and ambient temperatures, the water-cooled heat exchanger 3 can flexibly adjust the cooling intensity according to actual needs. For example, when the inlet air temperature is normal, the electromagnetic water valve remains closed to reduce unnecessary energy consumption; however, when an increase in inlet air temperature is detected, the electromagnetic water valve automatically opens, allowing cooling water to flow through the heat exchanger 3 and quickly reduce the inlet air temperature.

[0062] Comprehensive protection mechanism: The system is also equipped with monitoring devices such as inlet air temperature probe 2 and thermistor to monitor temperature changes in real time. It also dynamically adjusts the heat dissipation strategy through DSP (digital signal processor) control board, including adjusting fan speed and controlling the opening and closing of electromagnetic water valve, to ensure that the system is always in the best working state, while avoiding derating operation or shutdown protection due to overheating.

[0063] In summary, the use of water-cooled heat exchanger 3 not only improves the heat dissipation performance of the energy storage converter (PCS) under extreme operating conditions, but also enhances the stability and reliability of the entire system, which is of great significance for extending the service life of the equipment.

[0064] In one embodiment, please refer to Figure 1 The aforementioned cooling fan 5 includes a speed-regulating cooling fan 5. Its speed can be dynamically adjusted according to actual needs, satisfying both the requirements for efficient heat dissipation and minimizing energy consumption.

[0065] In one embodiment, please refer to Figure 2 The aforementioned intelligent air-cooling structure also includes several temperature sensors for monitoring the surface temperature of the power modules, which are connected to the DSP control board. This helps the system more accurately determine its current operating status and adjust its cooling strategy accordingly, preventing overheating-induced derating or shutdown protection.

[0066] In this embodiment, the main heat-generating components of the energy storage converter are the power module and the inverter inductor 7. Therefore, the heat dissipation system is mainly designed to optimize these components.

[0067] PCS Structure Layers: The PCS structure is internally divided into an upper electronic circuit layer and a lower heat dissipation layer. The upper electronic circuit layer mainly contains the PCS's power control circuit and data acquisition circuit, which generate relatively little heat and can be naturally cooled by the upper metal casing of the PCS. The lower layer is set as a heat dissipation layer, mainly to quickly dissipate the heat generated by the power module and inverter inductor 7, ensuring that the power devices do not cause the system to derating or shut down due to overheating.

[0068] The power module is mounted on the heat sink, and the inverter inductor 7 is placed inside the aluminum heat sink and potted with glue. The fan accelerates air convection and heat dissipation.

[0069] In high-temperature or enclosed environments, when the intake air temperature rises to a certain level, the fan alone cannot effectively dissipate heat, triggering the temperature protection threshold set in the PCS program, causing the system to operate at reduced power or even shut down. To address this, the present invention installs a water-cooled heat exchanger 3 at the air intake position and adds devices such as an intake air temperature-sensitive probe and an electromagnetic water valve.

[0070] In the market, liquid cooling has become the mainstream solution for industrial and commercial energy storage cabinets when charging and discharging lithium batteries, and they are equipped with water-cooled units. The water-cooled heat exchanger 3 inside the PCS is supplied with water by the water pump of the water-cooled unit in the energy storage cabinet. When the inlet air temperature is normal, the electromagnetic water valve is closed to reduce energy loss; when the inlet air temperature rises, the electromagnetic water valve opens, and the hot air is cooled down after passing through the water-cooled exchanger, thereby effectively dissipating heat from the power module heat sink 6 and the aluminum-cased inverter inductor 7.

[0071] Specifically, such as Figure 2 As shown, the PCS main circuit topology adopts a four-bridge design, with each power bridge arm using a power module. Each power module contains an NTC thermistor (NTC1~NTC4). An NTC5 thermistor for collecting airflow temperature is designed at the air inlet of the lower heatsink compartment of the PCS. The cooling fan 5 features PWM speed control and PG speed feedback functions.

[0072] If its output power is less than 20% * Pn (rated power), the control board DSP will continuously collect the temperature of each temperature detection point.

[0073] 1.1 If the power module temperature rises to T1, the DSP outputs an enable signal to control the power electronic switch to open, and at the same time outputs a PWM signal, the fan runs at 20% speed to cool the PCS.

[0074] 1.2 If the power module temperature continues to rise, and is between T1 and T3, then the DSP controls the current speed S = Sn*(20% + (T2-T1) / (T3-T1)), where Sn is the rated speed. If the calculated S > Sn, then S = Sn.

[0075] 1.3 If the environment is high temperature, when the fan is running at its rated speed and the power module temperature is greater than T3, the DSP outputs an enable signal to control the solenoid water valve of the water-cooled heat exchanger 3 to open. The hot air temperature decreases after passing through the water-cooled heat exchanger, and then the system is cooled.

[0076] 1.4 If the power module temperature rises further than T4, reduce the PCS output power.

[0077] 1.5 If the power module temperature continues to rise above Tmax, the PCS will enter high-temperature shutdown protection.

[0078] If the output power of the PCS exceeds 20%Pn, because the module temperature reflected by the NTC thermistor of the module has a lag relative to the junction temperature of the power transistor inside the module, the current fan speed is directly set to run according to the power ratio. For example, if the current power is 30%*PN, the fan will run according to 30%*Sn.

[0079] The DSP program also sets the output power and the corresponding power module temperature range. If the current fan speed cannot effectively dissipate heat due to the increased intake air temperature, causing the power module temperature to exceed the maximum temperature of the corresponding power and temperature range, the DSP controls the fan speed to increase until the power module temperature is within the corresponding temperature range. If the module temperature continues to rise above T3, the heat dissipation strategy will proceed to steps 1.3, 1.4, and 1.5 above.

[0080] During wind turbine operation, the DSP continuously monitors the wind turbine's speed feedback signal FG to detect whether the current wind turbine speed is within a reasonable error range compared to the set speed. A setting error of <10% is considered normal, an error between 10% and 20% is an alarm, and an error >30% will trigger the PCS to enter shutdown protection. At the same time, the DSP will upload the current fault status for maintenance personnel to perform maintenance checks.

[0081] If the 24V power supply is directly supplied to the wind turbine, a short circuit inside one of the turbines will cause the 24V to continuously decrease or even be damaged, preventing the system from starting. Therefore, a power electronic switch is designed into the wind turbine power supply. If a short circuit occurs inside the wind turbine, the power electronic switch generates a protection shutdown output and simultaneously sends an OC overcurrent signal to the DSP, which enables the shutdown. At the same time, the PCS enters the shutdown protection state, and the DSP uploads the current fault status for maintenance personnel to perform maintenance and inspection.

[0082] Energy conservation is crucial in energy storage systems. When the PCS is operating, if the inlet air temperature is suitable and the power module temperature is within the safe threshold, there is no need to open the solenoid water valve, thus saving energy consumption of the water-cooled unit. In high-temperature or enclosed environments, if the power module exceeds the safe threshold, the solenoid water valve will be opened to ensure that the power module remains below the maximum protection temperature.

[0083] If the 24V power supply is directly applied to the solenoid water valve, a short circuit inside the valve will cause the 24V to continuously decrease or even damage the valve, preventing the system from starting. Therefore, a power electronic switch is designed into the power supply of the solenoid water valve. If a short circuit occurs inside the solenoid water valve, the power electronic switch will generate a protection shutdown output and simultaneously send an OC overcurrent signal to the DSP, which will enable the shutdown. At the same time, the PCS will enter shutdown protection mode, and the DSP will upload the current fault status for maintenance personnel to perform maintenance and inspection.

[0084] If the three-phase load output by the PCS is unbalanced, it will cause inconsistent heating of each corresponding power module. The corresponding fans can be independently speed-regulated by six independent PWM signals, which can also save energy to a certain extent.

[0085] The advantage of this embodiment is that it effectively solves the problem of PCS internal heat-generating components having to reduce power operation when exceeding the threshold temperature in high-temperature or enclosed environments, thereby improving system lifespan, reliability, and economy. By combining air-cooling and water-cooling technologies with intelligent control algorithms, a highly efficient and energy-saving heat dissipation solution is achieved, ensuring that the energy storage converter maintains optimal performance under various operating conditions.

[0086] The aforementioned intelligent air-cooled heat dissipation system for an energy storage converter divides the interior of the housing 1 into upper and lower layers. The electronic circuitry layer is located in the upper layer, away from heat sources, while the intelligent air-cooled heat dissipation structure is placed in the lower layer, closer to potential heat-generating components. This layout not only reduces heat conduction to critical electronic components but also utilizes natural convection to aid heat dissipation. Simultaneously, in conjunction with an intelligent control strategy, the fan speed and the operating status of the water-cooled heat exchanger 3 are dynamically adjusted based on real-time temperature monitoring data. This ensures that the system maintains optimal operating temperature even in high-temperature or enclosed environments, avoiding the risk of efficiency degradation or damage due to overheating. This guarantees stable and efficient operation of the PCS under various environmental conditions. This comprehensive approach, considering both hardware design and software control, greatly enhances the system's adaptability and reliability, achieving effective heat management within the PCS, thereby improving the overall performance and reliability of the system.

[0087] In one embodiment, a method for operating the above-mentioned intelligent air-cooled heat dissipation system for energy storage converter is also provided, comprising:

[0088] When the system's output power is less than the set rated power, the DSP control board continuously monitors the temperature detection point and adjusts the speed of the cooling fan 5 and whether the heat exchanger 3 is turned on according to the temperature of the power module.

[0089] If the power module temperature exceeds the set value, the following steps will be taken in sequence: increase the speed of the cooling fan 5, activate the heat exchanger 3 for cooling, until the output power is reduced and the high temperature shutdown protection is activated.

[0090] When the system's output power exceeds the set rated power, the fan speed is set proportionally, and dynamic adjustments are made when the temperature exceeds the limit.

[0091] Monitor the speed of cooling fan 5 to ensure that the speed of cooling fan 5 is within a reasonable error range. If it exceeds the range, trigger an alarm or shutdown protection.

[0092] It should be noted that those skilled in the art can clearly understand the specific implementation process of the above-mentioned intelligent air-cooled heat dissipation system for energy storage converters. They can refer to the corresponding descriptions in the aforementioned system embodiments. For the sake of convenience and brevity, these details will not be repeated here.

[0093] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An intelligent air-cooled heat dissipation system for an energy storage converter, characterized in that, include: The enclosure comprises a housing, an intelligent air-cooling structure, and an electronic circuit layer. The housing contains an upper space and a lower space, and the electronic circuit layer is located in the upper space. The intelligent air-cooled heat dissipation structure is placed in the lower space.

2. The intelligent air-cooled heat dissipation system for an energy storage converter according to claim 1, characterized in that, The electronic circuit layer includes a power module.

3. The intelligent air-cooled heat dissipation system for an energy storage converter according to claim 2, characterized in that, The housing is provided with an air inlet, which is connected to the lower space.

4. The intelligent air-cooled heat dissipation system for an energy storage converter according to claim 3, characterized in that, The intelligent air-cooled heat dissipation structure includes an inlet air temperature probe, a heat exchanger, a solenoid valve, a cooling fan, a power module heat sink, and an inverter inductor; the inlet air temperature probe is installed at the air inlet; the heat exchanger is connected to the water supply system through the solenoid valve; the cooling fan is placed between the heat exchanger and the power module heat sink, and the power module heat sink is connected to the power module; the inverter inductor is placed on one side of the power module heat sink.

5. The intelligent air-cooled heat dissipation system for an energy storage converter according to claim 4, characterized in that, The intelligent air-cooled heat dissipation structure also includes a DSP control board, a first power electronic switch, and a second power electronic switch. The cooling fan is connected to the DSP control board through the first power electronic switch; the solenoid valve is connected to the DSP control board through the second power electronic switch.

6. The intelligent air-cooled heat dissipation system for an energy storage converter according to claim 4, characterized in that, The intelligent air-cooled heat dissipation structure also includes a temperature sampling operational amplifier conditioning circuit; the temperature sampling operational amplifier conditioning circuit is connected to the inlet air temperature probe.

7. The intelligent air-cooled heat dissipation system for an energy storage converter according to claim 4, characterized in that, The heat exchanger includes a water-cooled heat exchanger.

8. The intelligent air-cooled heat dissipation system for an energy storage converter according to claim 4, characterized in that, The cooling fan includes a speed-regulating cooling fan.

9. The intelligent air-cooled heat dissipation system for an energy storage converter according to claim 5, characterized in that, The intelligent air-cooled heat dissipation structure also includes several temperature sensors for monitoring the surface temperature of the power module, and the temperature sensors are connected to the DSP control board.

10. A method for operating the intelligent air-cooled heat dissipation system for an energy storage converter as described in any one of claims 1 to 9, characterized in that, include: When the system's output power is less than the set rated power, the DSP control board continuously monitors the temperature detection point and adjusts the speed of the cooling fan and whether the heat exchanger is turned on according to the temperature of the power module. If the power module temperature exceeds the set value, the following steps will be taken in sequence: increase the cooling fan speed, activate the heat exchanger for cooling, reduce the output power, and enter the high temperature shutdown protection. When the system's output power exceeds the set rated power, the fan speed is set proportionally, and dynamic adjustments are made when the temperature exceeds the limit. Monitor the speed of the cooling fan to ensure that the speed is within a reasonable error range. If it exceeds the range, trigger an alarm or shutdown protection.

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