Energy storage converter and its heat dissipation control method

Abstract

The present application relates to the field of energy storage technologies, and provides an energy storage converter and a heat dissipation control method therefor. The energy storage converter includes a main converter control circuit and a plurality of fan assemblies. Each fan assembly includes two fans and a fan control circuit. Each fan control circuit includes two drive circuit modules and a logic control module. The logic control module is respectively connected to the first drive circuit module and the second drive circuit module. The output ends of the first drive circuit module and the second drive circuit module are correspondingly connected to the fan motor of the first fan and the fan motor of the second fan. The logic control module receives and responds to the output signal of the main converter control circuit, and outputs control logic to control the operation of the first fan and the second fan. The main converter control circuit stores control strategies for each fan, and each control strategy is determined based on the heat dissipation requirements of the energy storage converter. This solves the problem that traditional fan control is difficult to meet the heat dissipation requirements of the energy storage converter.

Description

Technical Field

[0001] This application relates to the technical field of energy storage, and more particularly, to an energy storage converter and its heat dissipation control method. Background Art

[0002] Energy storage converters are mainly based on power electronics technology and achieve bidirectional AC-DC conversion of electrical energy by controlling the on-off of power devices. Power electronic devices (such as IGBTs, MOSFETs) generate heat during operation. Specifically, energy losses occur during the switching process of the devices, resulting in a temperature increase. Temperature is one of the key factors affecting the lifespan of energy storage converters. In a high-temperature environment, the thermal stress inside the energy storage converter increases, thereby shortening its service life.

[0003] Currently, traditional fan control is mostly used to achieve heat dissipation of energy storage converters. However, the control mode of traditional fan control is relatively single, unable to adjust parameters such as air volume and air pressure, and it is difficult to meet the heat dissipation requirements of energy storage converters. Summary of the Invention

[0004] The main purpose of this application is to provide an energy storage converter and its heat dissipation control method to solve the problem that the single control mode of traditional fan control in the prior art is difficult to meet the heat dissipation requirements of energy storage converters.

[0005] To achieve the above objective, according to the first aspect of this application, an energy storage converter is provided, including: a converter main control circuit; a plurality of fan assemblies, each of the fan assemblies includes two fans and a fan control circuit, the two fans are respectively a first fan and a second fan, each of the fan control circuits includes two drive circuit modules and a logic control module, the two drive circuit modules are respectively a first drive circuit module and a second drive circuit module, the logic control module is respectively connected to the first drive circuit module and the second drive circuit module, the output end of the first drive circuit module is connected to the fan motor of the first fan, the output end of the second drive circuit module is connected to the fan motor of the second fan, each of the logic control modules is connected to the converter main control circuit, wherein, the logic control module receives and responds to the output signal of the converter main control circuit, outputs control logic to control the operation of the first fan and the second fan, wherein, control strategies of each of the fans are stored in the converter main control circuit, and each of the control strategies is determined based on the heat dissipation requirements of the energy storage converter.

[0006] Optionally, the first drive circuit module is a first H-bridge circuit module, the second drive circuit module is a second H-bridge circuit module, the output terminal of the first H-bridge circuit module is connected to the fan motor of the first fan, and the output terminal of the second H-bridge circuit module is connected to the fan motor of the second fan.

[0007] Optionally, the first H-bridge circuit module includes four three-terminal switching tubes and four diodes. The four three-terminal switching tubes are respectively a first three-terminal switching tube, a second three-terminal switching tube, a third three-terminal switching tube, and a fourth three-terminal switching tube. The four diodes are respectively a first diode, a second diode, a third diode, and a fourth diode. The control terminals of the four three-terminal switching tubes are correspondingly connected to four pins of the logic control module. The first end of the first three-terminal switching tube, the negative electrode of the first diode, the first end of the third three-terminal switching tube, and the negative electrode of the third diode are all connected to the power supply terminal. The second end of the first three-terminal switching tube is connected to the first end of the second three-terminal switching tube. The positive electrode of the first diode is connected to the negative electrode of the second diode. The second end of the third three-terminal switching tube is connected to the first end of the fourth three-terminal switching tube. The positive electrode of the third diode is connected to the negative electrode of the fourth diode. The second end of the second three-terminal switching tube, the positive electrode of the second diode, the second end of the fourth three-terminal switching tube, and the positive electrode of the fourth diode are all connected to the ground terminal. The second end of the first three-terminal switching tube is further connected to the positive electrode of the first diode and forms a first output terminal. The second end of the third three-terminal switching tube is further connected to the positive electrode of the third diode and forms a second output terminal. The first output terminal and the second output terminal are respectively connected to the positive electrode and the negative electrode of the fan motor of the first fan. The second H-bridge circuit module includes four three-terminal switching tubes and four diodes. The four three-terminal switching tubes are respectively a fifth three-terminal switching tube, a sixth three-terminal switching tube, a seventh three-terminal switching tube, and an eighth three-terminal switching tube. The four diodes are respectively a fifth diode, a sixth diode, a seventh diode, and an eighth diode. The control terminals of the four three-terminal switching tubes are correspondingly connected to four pins of the logic control module. The first end of the fifth three-terminal switching tube, the negative electrode of the fifth diode, the first end of the seventh three-terminal switching tube, and the negative electrode of the seventh diode are all connected to the power supply terminal. The second end of the fifth three-terminal switching tube is connected to the first end of the sixth three-terminal switching tube. The positive electrode of the fifth diode is connected to the negative electrode of the sixth diode. The second end of the seventh three-terminal switching tube is connected to the first end of the eighth three-terminal switching tube. The positive electrode of the seventh diode is connected to the negative electrode of the eighth diode. The second end of the sixth three-terminal switching tube, the positive electrode of the sixth diode, the second end of the eighth three-terminal switching tube, and the positive electrode of the eighth diode are all connected to the ground terminal. The second end of the fifth three-terminal switching tube is further connected to the positive electrode of the fifth diode and forms a first output terminal. The second end of the seventh three-terminal switching tube is further connected to the positive electrode of the seventh diode and forms a second output terminal. The first output terminal and the second output terminal are respectively connected to the positive electrode and the negative electrode of the fan motor of the second fan.

[0008] Optionally, the logic control module includes a plurality of electrically connected logic gates.

[0009] Optionally, the energy storage converter further includes: a plurality of temperature detection circuits installed in different detection areas, and the plurality of temperature detection circuits transmit temperature acquisition data to the corresponding logic control module through a bus.

[0010] Optionally, the bus is used to transmit data signals and clock signals.

[0011] Optionally, the bus is a ZACwire bus.

[0012] Optionally, the energy storage converter further includes: a power detection circuit, and the power detection circuit is connected to the main control circuit of the converter.

[0013] Optionally, a plurality of the logic control modules are connected to the same pin of the main control circuit of the converter.

[0014] Optionally, the first fan and the second fan are arranged opposite to each other.

[0015] According to a second aspect of the present application, a heat dissipation control method for an energy storage converter is provided, including: determining whether a connection is successfully established between the main control circuit of the converter and the fan control circuits in each fan assembly; after the connection is successfully established between the main control circuit of the converter and each of the fan control circuits, the main control circuit of the converter sends a control strategy determined based on the heat dissipation requirement of the energy storage converter to the corresponding fan control circuit, so that after the fan control circuit translates the control strategy, it sends a translated control signal to the corresponding drive circuit module to drive the corresponding fan to operate.

[0016] Optionally, determining whether a connection is successfully established between the main control circuit of the converter and the fan control circuits in each fan assembly includes: the main control circuit of the converter assigns a unique physical address to the fan control circuits in each fan assembly; based on the physical address, the main control circuit of the converter wakes up different fan control circuits at different times, and determines that the connection between the main control circuit of the converter and each fan control circuit is successful when receiving response signals sent by each fan control circuit.

[0017] Optionally, the control strategy determined based on the heat dissipation requirement of the energy storage converter includes: obtaining temperature data detected in each detection area; determining the control strategy corresponding to each detection area at least according to the temperature data detected in each detection area.

[0018] Optionally, determining the control strategy corresponding to each of the detection areas based at least on the temperature data detected in each of the detection areas includes: obtaining operation data of the energy storage converter, where the operation data at least includes power data; determining the control strategy corresponding to each of the detection areas based on the temperature data detected in each of the detection areas and the operation data of the energy storage converter.

[0019] Optionally, after determining the control strategy corresponding to each of the detection areas based on the temperature data detected in each of the detection areas and the operation data of the energy storage converter, the method further includes: after applying the control strategy to control the corresponding fan to operate and after a preset time period, obtaining the updated temperature data of the corresponding detection area again; determining whether the updated temperature data is greater than a temperature setting threshold; in the case where the updated temperature data is still greater than the temperature setting threshold, controlling to increase the operation parameters of the corresponding fan, where the operation parameters include at least one of air volume, wind speed, wind pressure, and blowing direction; in the case where the updated temperature data is less than or equal to the temperature setting threshold, controlling to decrease the operation parameters of the corresponding fan.

[0020] Optionally, determining the control strategy corresponding to each of the detection areas based at least on the temperature data detected in each of the detection areas includes: determining the control strategies of the first fan and the second fan based at least on the temperature data detected in each of the detection areas and the installation positions of the first fan and the second fan in the same detection area, and the control strategy of the first fan is different from the control strategy of the second fan.

[0021] The beneficial effects of the present application are as follows: Multiple fan assemblies are installed at different positions of the energy storage converter that need heat dissipation, for example, the installation positions of power semiconductor devices, capacitors, transformers, control boards, input / output terminals and connecting wires, etc. And the control strategies of each fan are stored in the main control circuit of the converter in advance according to the heat dissipation requirements of different positions, which is convenient for the main control circuit of the converter to generate corresponding control instructions according to the control strategies of each fan and transmit them to the logic control module. The logic control module analyzes the control instructions to generate corresponding logic outputs (0 or 1), and transmits them to the corresponding drive circuit module to drive the fan motor, thereby realizing heat dissipation. Since the control strategies of each fan are formulated according to the actual heat dissipation requirements of different positions (i.e., different areas), the subsequent operation of the first fan and the second fan can meet the heat dissipation requirements, realizing flexible and rich fan control, and obviously having a better heat dissipation effect compared with the relatively single fan control mode in the prior art. Description of the Drawings

[0022] The accompanying drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0023] Figure 1 A schematic diagram of an energy storage converter according to an embodiment of this application is shown;

[0024] Figure 2 A schematic diagram of a fan assembly according to an embodiment of this application is shown;

[0025] Figure 3 A schematic diagram of a fan in the fan assembly according to an embodiment of this application is shown;

[0026] Figure 4 A schematic diagram of a single fan control circuit according to an embodiment of this application is shown;

[0027] Figure 5 A schematic diagram of multiple fan control circuits according to an embodiment of this application is shown;

[0028] Figure 6 A schematic diagram of a partial structure of a first specific logic control module according to an embodiment of this application is shown;

[0029] Figure 7 A schematic diagram of a partial structure of a second specific logic control module according to an embodiment of this application is shown;

[0030] Figure 8 A communication protocol timing diagram of the ZACwire bus according to an embodiment of this application is shown;

[0031] Figure 9 A flowchart of a heat dissipation control method for an energy storage converter according to an embodiment of this application is shown;

[0032] Figure 10 A flowchart of a specific heat dissipation control method according to an embodiment of this application is shown.

[0033] Among them, the above-mentioned drawings include the following reference numerals:

[0034] 10. Converter main control circuit; 20. Fan assembly; 21. Fan; 210. Fan motor of the first fan; 211. Fan motor of the second fan; 22. Fan control circuit; 221. First drive circuit module; 222. Second drive circuit module; 223. Logic control module; Q1. First three-terminal switching tube; Q2. Second three-terminal switching tube; Q3. Third three-terminal switching tube; Q4. Fourth three-terminal switching tube; Q5. Fifth three-terminal switching tube; Q6. Sixth three-terminal switching tube; Q7. Seventh three-terminal switching tube; Q8. Eighth three-terminal switching tube; D1. First diode; D2. Second diode; D3. Third diode; D4. Fourth diode; D5. Fifth diode; D6. Sixth diode; D7. Seventh diode; D8. Eighth diode; A0, A1, A2, A3, A4, A5, A6, A7, COM, S0, S1, S2 , VEE, VCC, GND, pins of the logic control module; RA. First sensing resistor; RB. Second sensing resistor; Y1. First AND gate; Y2. Second AND gate; Y3. Third AND gate; Y4. Fourth AND gate; Y5. Fifth AND gate; Y6. Sixth AND gate; Y7. Seventh AND gate; Y8. Eighth AND gate; T1. First triode; T2. Second triode; T3. Third triode; T4. Fourth triode; T5. Fifth triode; T6. Sixth triode; T7. Seventh triode; T8. Eighth triode. Detailed implementation mode

[0035] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0036] It should be noted that the terms used herein are only for describing the specific implementation mode and are not intended to limit the exemplary implementation mode according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] It should be understood that when an element (such as a layer, film, region, or substrate) is described as "on" another element, the element can be directly on the other element, or there may also be an intermediate element. Moreover, in the specification and the claims, when an element is described as "connected" to another element, the element can be "directly connected" to the other element, or "connected" to the other element through a third element.

[0038] To enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0039] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0040] In the description of the embodiments of this application, the meaning of "a plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] The energy storage converter realizes the bidirectional AC-DC conversion of electric energy by controlling the on-off of power devices; the power devices (IGBT, MOSFET) generate heat during operation. Specifically, due to the energy loss generated during the switching process of the power devices, the temperature rises. Temperature is one of the key factors affecting the life of the converter. In a high-temperature environment, the thermal stress inside the converter will increase, thereby shortening its service life. Multiple converter explosion problems are all caused by thermal imbalance. The traditional fan control method is relatively simple; it is impossible to control and adjust the air volume and air pressure; it is difficult to meet the needs of the field of intensive heat dissipation.

[0042] A relatively simple fan control mode in the prior art is: adopting the traditional ordinary fan constant-speed direct blowing heat dissipation method; the control method is relatively simple; the air volume and air pressure cannot be controlled and adjusted; this single fan control mode is difficult to meet the heat dissipation requirements of the energy storage converter. And the existing single fan control mode belongs to the open-loop control method; it is impossible to adjust the required air pressure and air volume according to the power operation state of the energy storage converter.

[0043] That is to say, the traditional fan control mode in the prior art is relatively simple and difficult to meet the heat dissipation requirements of the energy storage converter. To solve the problem that the traditional fan control mode is relatively simple and difficult to meet the heat dissipation requirements of the energy storage converter, this application proposes an energy storage converter and its heat dissipation control method.

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0045] The embodiments of this application provide an energy storage converter, see Figure 1 、 Figure 2 and Figure 3, including: a main converter control circuit 10 and multiple fan assemblies 20,

[0046] Each fan assembly 20 includes two fans 21 and a fan control circuit 22. The two fans 21 are respectively a first fan and a second fan. Each fan control circuit 22 includes two drive circuit modules and a logic control module 223. The two drive circuit modules are respectively a first drive circuit module 221 and a second drive circuit module 222. The logic control module 223 is respectively connected to the first drive circuit module 221 and the second drive circuit module 222. The output end of the first drive circuit module 221 is connected to the fan motor 210 of the first fan, and the output end of the second drive circuit module 222 is connected to the fan motor 211 of the second fan. Each logic control module 223 is connected to the main converter control circuit 10.

[0047] In addition, the fan assembly 20 in this solution has a built-in storage module; the built-in storage module allows each fan assembly 20 to store its specific control parameters and configuration information; this can reduce the data storage pressure on the main converter control circuit 10.

[0048] Figure 2 In, the first fan and the second fan are arranged oppositely. This arrangement method can maximize the heat dissipation function of the fan and is convenient for installation and integration.

[0049] The main converter control circuit and the fan control circuit in this solution are both integrated ICs; refer to, Figure 2 the fan control circuit 22 in. The integrated IC is convenient for installation and saves space, is convenient for large-scale production, and is convenient for industrial application. And the integrated IC can provide higher performance because the distance between components is closer, signal transmission is faster, reducing signal delay and interference. Moreover, integrated ICs are usually more reliable than discrete designs because they have fewer connection points, which reduces the possibility of failures. In addition, integrated ICs usually use a hermetic package, which helps to protect internal components from environmental factors. Additionally, the components in the integrated IC are arranged more closely and the signal path is shorter, so the power consumption is relatively low. The integrated IC allows multiple functions to be integrated together at the design stage, which makes the design more flexible and can be easily modified and upgraded. That is, the integrated IC has obvious advantages over discrete designs in terms of volume, cost, performance, reliability, power consumption, design flexibility, standardization, production speed, and environmental impact. It is more convenient to be applied in the field of energy storage converters.

[0050] Refer to Figure 1, the first drive circuit module 221 is used to drive the fan motor 210 of the first fan, and the second drive circuit module 222 is used to drive the fan motor 211 of the second fan; that is, the differential control of the first fan and the second fan is realized by driving the first fan and the second fan separately. This differential control method can meet diverse heat dissipation requirements and is more flexible. Of course, in some cases, it can be the same control method. For example, the rotation speed is the same, the blowing direction is the same, the air volume is the same, and the air pressure is the same;

[0051] As mentioned above, the first fan and the second fan can use fans with exactly the same specifications, or fans with differences can be selected. For example, the number of fan blades of the first fan and the second fan is different.

[0052] See Figure 1 , the logic control module 223 receives and responds to the output signal of the converter main control circuit 10, and outputs control logic to control the operation of the first fan and the second fan. Among them, the control strategies of each fan are stored in the converter main control circuit 10, and each control strategy is determined based on the heat dissipation requirements of the energy storage converter.

[0053] By using the control logic to control the operation of the first fan and the second fan, the fan can be flexibly controlled. Further, by means of differential control of the dual motors to drive the rotation of the dual fan blades, the air volume, air pressure, and intake air volume can be flexibly changed; it can effectively dissipate heat from the high-temperature area inside the energy storage converter in a targeted manner.

[0054] In addition, since the fan is controlled by the control logic, the converter main control circuit can control the energy storage converter to derate according to the real-time operating power of the energy storage converter, that is, the real-time operating power of the energy storage converter only needs to meet the operating requirements, that is, within the preset operating power range. If it is detected that the real-time operating power of the energy storage converter is too high, the real-time operating power of the energy storage converter is appropriately reduced to meet the operating requirements while reducing energy consumption. Solve the problem of the tight power supply pressure of the auxiliary power supply board.

[0055] Figure 1 The converter main control circuit 10 in can select an integrated controller;

[0056] The energy storage converter in this solution includes in addition to Figure 1 the converter main control circuit 10 and multiple fan assemblies 20 in , also includes a converter body.

[0057] In this solution, multiple fan components are installed at different positions of the energy storage converter that require heat dissipation. For example, the installation positions of power semiconductor devices, capacitors, transformers, control boards, input / output terminals, and connecting wires, etc. And according to the heat dissipation requirements of different positions, the control strategies of each fan are stored in the main control circuit of the converter in advance, which is convenient for the main control circuit of the converter to generate corresponding control instructions according to the control strategies of each fan and transmit them to the logic control module. The logic control module parses the control instructions to generate corresponding logical outputs (0 or 1), and transmits them to the corresponding drive circuit module to drive the fan motor, thereby realizing heat dissipation. Since the control strategies of each fan are formulated according to the actual heat dissipation requirements of different positions (i.e., different regions), the subsequent operation of the first fan and the second fan can meet the heat dissipation requirements, realizing flexible and rich fan control. Compared with the relatively single fan control mode in the prior art, the heat dissipation effect is obviously better.

[0058] Furthermore, the better heat dissipation effect can ensure that the power devices inside the energy storage converter work within a reasonable temperature gradient range; ensure that the energy storage converter operates within a reasonable temperature rise range. It safeguards the thermal stress safety of the energy storage converter; improves the electrical safety of the converter; thus effectively prolonging the service life of the energy storage converter; and improving the working efficiency of the energy storage converter.

[0059] To further effectively drive the fan motors of the first fan and the second fan, the first drive circuit module selects the first H-bridge circuit module, and the second drive circuit module selects the second H-bridge circuit module. The output terminal of the first H-bridge circuit module is connected to the fan motor of the first fan, and the output terminal of the second H-bridge circuit module is connected to the fan motor of the second fan. Specifically, the bidirectional driving ability of the H-bridge circuit module is used to drive the forward and reverse rotation of the fan motor, and the power consumption of the H-bridge circuit module is relatively low, which can save energy and improve the heat dissipation efficiency. In addition, by PWM (pulse width modulation) controlling the switches of the H-bridge, the speed and direction (forward and reverse rotation) of the motor (i.e., the fan motor) can be adjusted to achieve smooth speed control and flexible direction control. That is, the H-bridge circuit module can achieve precise control of the fan. And the H-bridge circuit module can withstand high voltage and large current, which can meet the heat dissipation requirements of the energy storage converter. And the H-bridge circuit module can select different switching devices according to needs, such as MOSFET or IGBT, to adapt to different application requirements. And the modular design of the H-bridge circuit in this solution is convenient for integration into the fan control circuit.

[0060] See Figure 4, an embodiment of the present application provides a specific first H-bridge circuit module and a second H-bridge circuit module. The first H-bridge circuit module includes four three-terminal switching tubes and four diodes. The four three-terminal switching tubes are respectively a first three-terminal switching tube Q1, a second three-terminal switching tube Q2, a third three-terminal switching tube Q3, and a fourth three-terminal switching tube Q4. The four diodes are respectively a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4. The control ends of the four three-terminal switching tubes are correspondingly connected to four pins of the logic control module 223. The first end of the first three-terminal switching tube Q1, the negative electrode of the first diode D1, the first end of the third three-terminal switching tube Q3, and the negative electrode of the third diode D3 are all connected to the power supply terminal. The second end of the first three-terminal switching tube Q1 is connected to the first end of the second three-terminal switching tube Q2. The positive electrode of the first diode D1 is connected to the negative electrode of the second diode D2. The second end of the third three-terminal switching tube Q3 is connected to the first end of the fourth three-terminal switching tube Q4. The positive electrode of the third diode D3 is connected to the negative electrode of the fourth diode D4. The second end of the second three-terminal switching tube Q2, the positive electrode of the second diode D2, the second end of the fourth three-terminal switching tube Q4, and the positive electrode of the fourth diode D4 are all connected to the ground terminal. The second end of the first three-terminal switching tube Q1 is also connected to the positive electrode of the first diode D1 and forms a first output terminal. The second end of the third three-terminal switching tube Q3 is also connected to the positive electrode of the third diode D3 and forms a second output terminal. The first output terminal and the second output terminal are respectively connected to the positive electrode and the negative electrode of the fan motor 210 of the first fan;The second H-bridge circuit module includes four three-terminal switching tubes and four diodes. The four three-terminal switching tubes are the fifth three-terminal switching tube Q5, the sixth three-terminal switching tube Q6, the seventh three-terminal switching tube Q7, and the eighth three-terminal switching tube Q8 respectively. The four diodes are the fifth diode D5, the sixth diode D6, the seventh diode D7, and the eighth diode D8 respectively. The control ends of the four three-terminal switching tubes are correspondingly connected to four pins of the logic control module 223. The first end of the fifth three-terminal switching tube Q5, the negative electrode of the fifth diode D5, the first end of the seventh three-terminal switching tube Q7, and the negative electrode of the seventh diode D7 are all connected to the power supply terminal. The second end of the fifth three-terminal switching tube Q5 is connected to the first end of the sixth three-terminal switching tube Q6. The positive electrode of the fifth diode D5 is connected to the negative electrode of the sixth diode D6. The second end of the seventh three-terminal switching tube Q7 is connected to the first end of the eighth three-terminal switching tube Q8. The positive electrode of the seventh diode D7 is connected to the negative electrode of the eighth diode D8. The second ends of the sixth three-terminal switching tube Q6, the positive electrode of the sixth diode D6, the second ends of the eighth three-terminal switching tube Q8, and the positive electrode of the eighth diode D8 are all connected to the ground terminal. The second end of the fifth three-terminal switching tube Q5 is also connected to the positive electrode of the fifth diode D5 and forms a first output terminal. The second end of the seventh three-terminal switching tube Q7 is also connected to the positive electrode of the seventh diode D7 and forms a second output terminal. The first output terminal and the second output terminal are respectively connected to the positive electrode and the negative electrode of the fan motor 211 of the second fan.;

[0061] It should be noted that the three-terminal switching tubes in the first H-bridge circuit module and the second H-bridge circuit module can be selected as triodes or MOS tubes, and the performance of selecting MOS tubes is better than that of selecting triodes.

[0062] Figure 4 The positive terminal of the wiring end of the fan motor 210 of the first fan in is connected to the branch between the first diode D1 and the second diode D2, and the negative terminal of the wiring end of the fan motor 210 of the first fan is connected to the branch between the third diode D3 and the fourth diode D4;

[0063] Figure 4 The positive terminal of the wiring end of the fan motor 211 of the second fan in is connected to the branch between the fifth diode D5 and the sixth diode D6, and the negative terminal of the wiring end of the fan motor 211 of the second fan is connected to the branch between the seventh diode D7 and the eighth diode D8;

[0064] Figure 4 The pins of the logic control module 223 in include: pin A0, pin A1, pin A2, pin A3, pin A4, pin A5, pin A6, pin A7, pin COM, pin S0, pin S1, pin S2, pin , pin VEE, pin VCC, pin GND, pins A0 to A7 are connected to the MOSFET switches in the first drive circuit module 221 and the second drive circuit module 222, and pin COM is connected to the bus;

[0065] Figure 4The three-terminal switching transistor in it selects a MOSFET switching transistor, and the diode selects a clamping diode. While realizing the forward and reverse rotation control and speed control of the fan, it can withstand high voltage and large current, and is suitable for various motor differential controls. In short, the H-bridge circuit module using MOSFET switching transistors and clamping diodes has many advantages such as high efficiency performance, bidirectional control ability, fast switching speed, high durability and reliability, low static loss, easy PWM control, and simplified circuit design. Specifically, MOSFET (Metal Oxide Semiconductor Field Effect Transistor), as a power electronic device, has a low on-resistance. Especially in high-power applications, it can significantly reduce energy loss and improve the efficiency of the circuit. Compared with traditional BJTs (Bipolar Junction Transistors) or other types of transistors, MOSFETs have higher efficiency in high-frequency switching applications because they hardly generate heat in the on state. The basic design of the H-bridge circuit allows it to control the forward and reverse rotation of the motor. By alternately turning on and off two pairs of MOSFET switching transistors, the direction of the current flowing to the motor can be easily changed, realizing the forward and reverse rotation of the motor. This is crucial for the wind direction switching of the fan and the dynamic adjustment of the air volume, wind pressure. MOSFETs have a fast switching speed and can quickly respond to control signals, which is very important for precisely controlling the fan speed, especially in situations where the air volume and wind pressure need to be adjusted frequently. The fast response time means that more precise control effects can be achieved. The non-linear saturation characteristic of MOSFETs reduces the impact current during the switching process and extends the life of the device. At the same time, the use of clamping diodes can protect the MOSFET switching transistors from the influence of reverse voltage peaks, preventing the back electromotive force generated when the motor suddenly stops or commutes from damaging the MOSFET, enhancing the reliability of the circuit. The static loss of MOSFETs in the on state is very small and can almost be ignored. This means that even under no-load conditions, MOSFETs will not generate excessive heat, which helps to keep the circuit module operating at a low temperature and improve the thermal stability of the entire system. MOSFETs are very suitable for PWM (Pulse Width Modulation) control and can precisely control the fan speed by adjusting the time of MOSFETs in the on state. PWM control can not only achieve stepless adjustment of the fan speed but also help reduce electromagnetic interference and improve control accuracy. The combination of MOSFETs and clamping diodes can simplify the design of the H-bridge circuit and reduce the complexity of the peripheral circuit. The gate drive of MOSFETs is simple and only requires providing an appropriate gate voltage, while the clamping diodes ensure that the protection circuit of MOSFETs is simple and effective, reducing the circuit design cost and failure rate. Although high-level MOSFETs may be more expensive than some other types of switching transistors, considering their high efficiency, reliability, and the reduction of long-term maintenance costs brought by the simplified circuit, overall, the choice of MOSFETs provides a good cost-benefit ratio.

[0066] be applicable toFigure 4 The truth table of the solution in

[0067] Table 1 Truth Table

[0068]

[0069] In Table 1, Motor 1 is the fan motor of the first fan, and Motor 2 is the fan motor of the second fan. According to the control algorithm logic, change the level states of A0 - A7 to achieve the forward and reverse control of the two motors.

[0070] Specifically, the PWM signal of the logic control module performs pulse width modulation control on this module to achieve the speed regulation of the motor.

[0071] Figure 5 The schematic diagram showing multiple fan control circuits is shown. It can be seen that two fan control circuits share one bus. Figure 5 The two fan control circuits in are only exemplary. In actual applications, all fan control circuits share one bus for signal transmission with the main control circuit 10 of the converter. That is, multiple logic control modules 223 are connected to the same pin of the main control circuit of the converter. That is, multiple fan control circuits only need to occupy one I / O port of the main control circuit of the converter, which can save the interface resources of the main control circuit 10 of the converter, and has a simple structure, low cost, and is convenient for bus expansion and maintenance. And the solution of this application realizes the series use. However, in the prior art, one fan occupies one power interface and cannot realize the series use, resulting in a waste of I / O port resources.

[0072] To achieve the differential control of the first fan and the second fan, it can be realized by using a logic control module including multiple electrically connected logic gates. Specifically, the logic gates include AND gates, NOT gates and other gate circuits; the corresponding truth table is realized through multiple electrically connected logic gates.

[0073] A more specific implementation manner, such as Figure 6 and Figure 7 shown, the logic control module is composed of four Figure 6 modules shown in Figure 7 shows the connection manner of two modules, and the connection manner of four modules is similar. Among them, the first module includes the first AND gate Y1, the second AND gate Y2, the third AND gate Y3, the fourth AND gate Y4, the first triode T1, the second triode T2, the third triode T3 and the fourth triode T4; the second module includes the fifth AND gate Y5, the sixth AND gate Y6, the seventh AND gate Y7, the eighth AND gate Y8, the fifth triode T5, the sixth triode T6, the seventh triode T7 and the eighth triode T8. Apply the control logic of the AND gate and the working principle of the triode to achieve the corresponding output. Figure 7OUT1, OUT2, OUT3, and OUT4 in can respectively correspond to Figure 4 the outputs of pin A0, the output of pin A1, the output of pin A2, and the output of pin A3 in.

[0074] Figure 7 The first sensing resistor RA and the second sensing resistor RB in are current sensing resistors and can be used to monitor the current of the motor. By changing the current sensing resistor, the current applied to the motor terminal is changed, thereby realizing the change of the motor speed.

[0075] In addition, the operating state of the fan motor can also be monitored according to the magnitude of the current flowing through the current sensing resistor. For example, if the current flowing through the current sensing resistor is not within the preset current range, that is, the current value is too large or too small, it is determined that the fan motor is operating abnormally. On the contrary, if the current flowing through the current sensing resistor is within the preset current range, it is determined that the fan motor is operating normally.

[0076] To achieve precise and flexible heat dissipation control of the energy storage converter, the energy storage converter further includes: a plurality of temperature detection circuits installed in different detection areas. The plurality of temperature detection circuits transmit temperature acquisition data to the corresponding logic control module through a single bus. The single-bus sub-period transmission method is used to realize the transmission of temperature acquisition data of multiple different detection areas through a single bus, and the temperature data of different areas collected is transmitted to the main control circuit of the converter through a single bus, saving the IO ports of the main control circuit of the converter and facilitating the main control circuit of the converter to formulate different heat dissipation control strategies.

[0077] The main control circuit of the converter simultaneously calculates the temperature thresholds of multiple different detection areas and performs reasonable derating and exhaust according to the preconditions. While effectively exhausting heat, the fan assembly can also be derated according to the actual temperature threshold, playing a role in derating and energy saving. That is, if the detected real-time temperature is already lower than the temperature threshold of the corresponding area, at least one of the rotational speed, air volume, and wind speed of the fan can be reduced to achieve derated operation, which helps to improve the overall working efficiency of the energy storage converter.

[0078] In the embodiments of the present application, the bus is used to transmit data signals and clock signals. Among them, the data signals include temperature acquisition data signals, control strategy signals, etc. Using a bus that can transmit both data signals and clock signals saves the number of buses and the space occupied by the circuit board. In an energy storage converter, space savings can contribute to a more compact structural design and a more efficient heat dissipation layout. And the signals on the bus are transmitted bidirectionally. Further, using the same bus to transmit both data signals and clock signals also reduces interference between signal lines, improves signal integrity and system reliability; in addition, a single-bus architecture can be more easily expanded because new devices only need to be connected to the existing bus without additional data or clock signal lines. At the same time, it also simplifies fault diagnosis and maintenance because the possible points of cable faults are reduced. Fewer signal lines mean lower signal transmission power consumption, which can significantly extend the operating time of the device or reduce energy consumption for battery-powered or systems that require efficient energy management (such as energy storage converters). The single-bus technology facilitates integrated design. The ZACwire single-bus communication module can send and receive data in different time domains, which makes the read and write operations of data more efficient, especially in application scenarios that require real-time or fast response.

[0079] More specifically, the bus is a ZACwire bus. The communication protocol timing diagram of the ZACwire bus is as Figure 8 shown, establishing a data relationship mapping between the main control circuit of the converter and the integrated fan control circuit; the GPIO port of the main control circuit of the converter and the IC COM / out-in pins of the logic control module change logically within a period T; logic 1 is for sending data; logic 0 is for receiving data; thus realizing that the status and data on the bus are different at different timing intervals. According to this rule, the main control circuit of the converter can write and read data to and from the logic control module IC at different timings; thus realizing single-bus data transmission. The data content includes a fan start signal; a fan stop signal, dual-machine differential operation data, a current signal, etc.

[0080] In addition, a ZACwire single-bus communication module is also integrated in the logic control module; the single-bus communication module integrates a signal converter for analog and digital signal output. Its high-resolution refresh frequency and precise transmission accuracy can send and receive fan operation data packets in different time domains; it helps the host computer control the rotation speed of the fan motor and feedback the operating state of the fan motor, and can feedback the operating health state of the motor from multiple dimensions, effectively improving the timeliness of controlling the fan and feedbacking the fan state.

[0081] In addition, the fan control circuit in this solution is powered with low power consumption (typical value is 30 μA), effectively reducing the output power of the PCS auxiliary power supply board, helping to improve the overall efficiency of the energy storage converter and reduce the economic cost.

[0082] The energy storage converter further includes a power detection circuit, which is connected to the main control circuit of the converter. That is, it not only detects the temperature data in different areas but also detects the power of the energy storage converter, and realizes flexible heat dissipation control by combining the temperature data and power data.

[0083] Furthermore, since the heat generation of the converter varies with different operating powers, the integrated control system can use factors such as the converter operation power, grid connection form, load status, and internal area temperature to achieve closed-loop coordinated control of the energy storage converter, improving the highly intelligent ability of the energy storage converter; forming a dual drive for the demand side and the supply side. Specifically, the main control circuit of the converter obtains real-time temperature data from the temperature acquisition module through the ZACwire bus; the power monitoring module continuously monitors the operating power of the converter and transmits the data to the main control circuit of the converter; the grid connection status monitoring module detects the grid connection status and load conditions of the converter and transmits the data to the main control circuit of the converter. The main control circuit of the converter combines the operating power, grid connection form, load status, and internal area temperature to evaluate the heat dissipation requirements of each detected area. According to the evaluation result of the heat dissipation requirements, the main control circuit of the converter sends control instructions to the intelligent fan module through the ZACwire bus to adjust the air volume, air speed, and air pressure to achieve the heat management goal of the demand side. Moreover, the real-time monitored temperature data, operating power, and load status are used as driving factors on the demand side to guide the dynamic adjustment of the heat dissipation control strategy. The intelligent fan module adjusts the fan operation parameters according to the instructions of the control unit, and the supply side responds to the changes on the demand side to achieve precise supply of air volume and air pressure. Monitor the heat dissipation effect (by updating the temperature data), and feedback the result to the main control circuit of the converter, and adjust the control strategy according to the feedback result to form a closed-loop control.

[0084] In the open-loop control scheme, the fan runs continuously after startup, unable to implement the control strategy of coordinating the heat dissipation effect and operating power of the whole machine, and unable to perform comprehensive coordinated control according to the actual temperature of the converter operation, resulting in relatively low intelligence in the prior art. This closed-loop control method of this solution overcomes the deficiencies of the open-loop control.

[0085] The embodiment of this application also provides a heat dissipation control method for an energy storage converter, which is applied to Figure 1 and Figure 2 the energy storage converter in Figure 9 , including:

[0086] Step S101: Determine whether a connection has been successfully established between the main control circuit 10 of the converter and the fan control circuit 22 in each fan assembly 20;

[0087] For the subsequent transmission of control signals, it is necessary to establish a communication connection between the main control circuit 10 of the converter and the fan control circuit 22 in each fan assembly 20 before signal transmission. Specifically, refer to the description above to establish communication via the bus.

[0088] Step S102: After a connection has been successfully established between the main control circuit 10 of the converter and each fan control circuit 22, the main control circuit 10 of the converter sends the control strategy determined based on the heat dissipation requirements of the energy storage converter to the corresponding fan control circuit 22, so that after the fan control circuit 22 translates the control strategy, it sends the translated control signal to the corresponding drive circuit module to drive the corresponding fan to operate.

[0089] The existing solution directly controls the fan using a power supply board with a constant power speed; there is a phenomenon that the fan keeps idling even when heat dissipation is not required, and the power consumption of the auxiliary power supply board is always in a constant energy consumption state; resulting in relatively high losses of the energy storage converter. However, in this solution, for the situation where heat dissipation is not required, the fan is in a stopped state according to the control strategy determined based on the heat dissipation requirements of the energy storage converter, which is obviously energy-saving.

[0090] In this solution, multiple fan assemblies are installed at different positions of the energy storage converter that require heat dissipation. For example, the installation positions of power semiconductor devices, capacitors, transformers, control boards, input / output terminals and connecting wires, etc. Corresponding control strategies are formulated for different positions that require heat dissipation, and then sent to the corresponding fan control circuits, so that after the fan control circuits translate the control strategies, they send the translated control signals to the corresponding drive circuit modules to drive the corresponding fans to operate. Since the control strategies of each fan are formulated according to the actual heat dissipation requirements of different positions (i.e., different regions), the subsequent operation of the first fan and the second fan can meet the heat dissipation requirements, realizing flexible and rich fan control, and obviously having a better heat dissipation effect compared to the relatively single fan control mode in the prior art.

[0091] In a specific embodiment, Step S101: Determine whether a connection has been successfully established between the main control circuit 10 of the converter and the fan control circuit 22 in each fan assembly 20, including:

[0092] The main control circuit 10 of the converter assigns a unique physical address to the fan control circuit 22 in each fan assembly 20;

[0093] Based on the physical address, the main control circuit 10 of the converter wakes up different fan control circuits 22 in different time periods, and determines that the main control circuit 10 of the converter is successfully connected to each fan control circuit 22 when receiving the response signals sent by each fan control circuit 22.

[0094] By assigning unique physical addresses, each fan control circuit 22 can be uniquely determined, which is convenient for waking up different fan control circuits 22 in different time periods subsequently. Moreover, through the unique physical address, the main control circuit 10 of the converter can precisely control each fan assembly 20, realizing independent operation and personalized settings. This makes the heat dissipation control more refined, and the fan speed and air volume can be adjusted according to the temperature requirements of different areas of the converter, improving the heat dissipation efficiency.

[0095] In addition, the assignment of physical addresses allows the main control circuit 10 of the converter to adopt a single-bus communication method, which means that multiple fan assemblies 20 can share a set of I / O resources without the need to allocate independent control lines for each component. This can significantly reduce the use of I / O ports of the MCU, reserve more interface resources for other functional modules, simplify the circuit board design, and reduce the hardware cost. Each fan assembly 20 has a unique physical address, which makes it more flexible to add or remove fan assemblies 20 in the system without the need for re-wiring or substantial software modification. At the same time, the address assignment and response signal mechanism contribute to fault diagnosis, and can quickly locate which fan assemblies 20 have communication problems or abnormal operations.

[0096] The time-periodic wake-up mechanism can avoid multiple fan control circuits 22 competing for the bus access right simultaneously, reduce communication conflicts, and improve the efficiency and accuracy of data transmission. This mechanism also allows the main control circuit 10 of the converter to selectively communicate with specific fan assemblies 20, avoiding unnecessary signal transmissions and reducing communication power consumption.

[0097] Confirming the successful connection through the response signal can ensure that each fan control circuit operates under the correct configuration, avoiding heat dissipation out of control caused by communication errors. This mechanism also enhances the fault tolerance of the system. Even if a certain component fails, the system can continue to operate, but the heat dissipation strategy may need to be adjusted.

[0098] The precise control based on the physical address enables the main control circuit of the converter to execute complex heat dissipation strategies, such as adjusting the fan speed in real time according to the temperature, or adopting a "seamless insertion" control method, that is, dynamically adjusting the fan working state when needed, which helps to improve the overall heat dissipation efficiency and energy utilization efficiency of the system.

[0099] The allocation of physical addresses and the time - segmented wake - up mechanism simplify the software control logic because the main control circuit can manage different fan components through simple address recognition without complex multi - thread or multi - device synchronization mechanisms.

[0100] In addition, the allocation of unique physical addresses can prevent unauthorized devices from accessing the bus, enhancing the security of the system.

[0101] In a more specific embodiment, the control strategy determined based on the heat dissipation requirements of the energy storage converter includes:

[0102] Obtain the temperature data detected in each detection area; determine the control strategy corresponding to each detection area at least according to the temperature data detected in each detection area.

[0103] In a specific implementation, assume that during the operation of the energy storage converter, the temperature monitoring value in the power module area (such as IGBT) reaches 70°C, while the temperature in the capacitor area is 55°C. The temperatures in both areas exceed the safe range for normal operation. Through algorithm analysis, the integrated control unit determines that the power module area needs to enhance heat dissipation immediately, while the capacitor area can be processed later. The main control circuit of the converter sends instructions to the intelligent fan module mounted in the power module area through the ZACwire bus to increase the fan speed and air pressure to quickly reduce the temperature in this area. Considering the lower temperature in the capacitor area, the main control circuit of the converter selects a milder heat dissipation strategy, only moderately increasing the fan speed to prevent unnecessary energy waste. That is, during the entire operation of the converter, the integrated control unit continuously monitors the temperatures of all areas. If the temperature in the capacitor area starts to rise, the main control circuit 10 of the converter will correspondingly adjust the fan control parameters in this area, and vice versa, reduce the fan speed.

[0104] In addition, determining the control strategy corresponding to each detection area at least according to the temperature data detected in each detection area includes: obtaining the operation data of the energy storage converter, and the operation data at least includes power data; determining the control strategy corresponding to each detection area according to the temperature data detected in each detection area and the operation data of the energy storage converter.

[0105] Comprehensively coordinate and control the air pressure and wind speed of the cooling fans according to different operating power parameters of the converter. Achieve targeted multi - machine speed regulation of series - connected cooling fans through a single bus; have the technical characteristics of integrated control of changing air volume and air pressure.

[0106] In some embodiments, after determining the control strategy corresponding to each detection area according to the temperature data detected in each detection area and the operation data of the energy storage converter, the method further includes:

[0107] After applying the control strategy to control the corresponding fan to operate and after a preset time period, obtain the updated temperature data of the corresponding detection area again; by obtaining the updated temperature data of the detection area again after applying the control strategy for a period of time, the system can monitor the heat dissipation effect in real time and ensure the continuous effectiveness of the heat dissipation strategy. This mechanism avoids problems of insufficient heat dissipation or excessive heat dissipation that may be caused by static control strategies.

[0108] Determine whether the updated temperature data is greater than the temperature setting threshold; the temperature setting threshold in the solution provides a clear guiding standard for heat dissipation control, ensuring an accurate match between the fan operation and the internal temperature of the converter. When the temperature is higher than the threshold, the increase in the fan operation parameters can quickly reduce the temperature, and after the temperature is stable or lower than the threshold, the reduction in the operation parameters avoids unnecessary energy waste and realizes refined temperature control.

[0109] In the case where the updated temperature data is still greater than the temperature setting threshold, control to increase the operation parameters of the corresponding fan, and the operation parameters include at least one of air volume, wind speed, wind pressure, and blowing direction; reduce equipment failures caused by excessive temperature and improve the stability of system operation.

[0110] In the case where the updated temperature data is less than or equal to the temperature setting threshold, control to reduce the operation parameters of the corresponding fan.

[0111] The intelligent fan control strategy, while ensuring the heat dissipation effect, avoids energy waste caused by constant high-speed operation by dynamically adjusting the air volume, wind speed, wind pressure, and blowing direction, effectively improving the energy utilization efficiency of the energy storage converter. This not only saves operating costs but also meets the current environmental protection requirements of energy conservation and emission reduction.

[0112] In some embodiments, determine the control strategy corresponding to each detection area at least according to the temperature data detected in each detection area, including:

[0113] Determine the control strategies of the first fan and the second fan at least according to the temperature data detected in each detection area and the installation positions of the first fan and the second fan in the same detection area, and the control strategy of the first fan is different from that of the second fan. The first fan and the second fan meet the heat dissipation requirements of different positions in the same heat dissipation area, can execute different control strategies, and realize more targeted and flexible heat dissipation control. This differential control helps to reduce unnecessary energy consumption while ensuring the heat dissipation effect.

[0114] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the heat dissipation method of the present application will be described in detail below in conjunction with specific embodiments.

[0115] The heat dissipation method is applied toFigure 1 and Figure 2 for the energy storage converter in Figure 10 the heat dissipation method includes the following steps:

[0116] Step S1: Power on the main control circuit 10 of the converter;

[0117] Step S2: The main control circuit 10 of the converter assigns a unique physical address to the fan control circuit 22 in each of the above-mentioned fan assemblies 20;

[0118] Step S3: Each fan control circuit 22 completes the physical address definition;

[0119] Step S4: According to the timing diagram agreed upon by the communication protocol, trigger and wake up different logic control modules 223 through the bus GPIO port connected to the main control circuit 10 of the converter in different T time domains, and receive the fan operation data packet returned by the bus in the T+1 time domain;

[0120] Step S5: The communication relationship mapping between the main control circuit 10 of the converter and different logic control modules 223 is completed; the bus communication is established;

[0121] Step S6: Perform closed-loop regulation and control on the air volume and air pressure of the fan according to the temperature threshold of the converter body area;

[0122] Step S7: Repeatedly collect the temperature data of the converter body area;

[0123] Step S8: Obtain the operation data of the converter; operating power, grid connection form, load status;

[0124] Step S9: Call instructions by running the pre-set operating power / temperature code; perform different air volume and air pressure coordinated regulation at different powers, and judge whether the expected control effect is achieved. If not, return to Step S8. If so, execute Step S10;

[0125] Among them, whether the expected control effect is achieved is whether the expected heat dissipation effect is achieved; that is, according to factors such as the converter operation power, grid connection form, load status, and internal area temperature, closed-loop fusion and coordinated control of the energy storage converter is realized. Combining with the differential control method of the intelligent fan module, the highly intelligent technical level of the energy storage converter can be significantly enhanced.

[0126] Moreover, calculate the temperature thresholds of multiple different detection areas at the same time, and perform reasonable derating and exhaust according to the preconditions. While effectively exhausting heat, the fan assembly can also be derated according to the actual temperature threshold, playing a role in derating and energy saving. That is, if it is detected that the real-time temperature is already lower than the temperature threshold of the corresponding area, at least one of the rotation speed, air volume, and wind speed of the fan can be reduced to achieve derated operation, which helps to improve the overall working efficiency of the energy storage converter.

[0127] Step S10: Compare and judge according to the mining temperature threshold; execute the derated operation of the fan.

[0128] Step S11: The energy storage converter stops working; this program segment stops working; the system cooperative control ends.

[0129] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A power storage converter, characterized in that, Including: The main control circuit of the converter; A plurality of fan assemblies, each of the fan assemblies includes two fans and a fan control circuit. The two fans are respectively a first fan and a second fan. Each of the fan control circuits includes two drive circuit modules and a logic control module. The two drive circuit modules are respectively a first drive circuit module and a second drive circuit module. The logic control module is respectively connected to the first drive circuit module and the second drive circuit module. The output end of the first drive circuit module is connected to the fan motor of the first fan. The output end of the second drive circuit module is connected to the fan motor of the second fan. Each of the logic control modules is connected to the main control circuit of the converter. The plurality of logic control modules are connected to the same pin of the main control circuit of the converter; Wherein, the logic control module receives and responds to the output signal of the main control circuit of the converter, and outputs control logic to control the operation of the first fan and the second fan. Wherein, control strategies of each of the fans are stored in the main control circuit of the converter, and each of the control strategies is determined based on the heat dissipation requirement of the energy storage converter; One of the logic control modules is composed of four modules. Any one of the modules includes a first AND gate, a second AND gate, a third AND gate, a fourth AND gate, a first triode, a second triode, a third triode, a fourth triode and a current sensing resistor. Wherein, the current flowing through the current sensing resistor is used to monitor the fan motor by changing the current sensing resistor to change the current acting on the wiring terminal of the fan motor so as to change the speed of the fan motor. If the current flowing through the current sensing resistor is within the preset current range, it is determined that the fan motor is operating normally. If the current flowing through the current sensing resistor is not within the preset current range, it is determined that the fan motor is operating abnormally; Wherein, a first control signal is input to the first input end of the first AND gate and the first input end of the second AND gate. A second control signal is input to the first input end of the third AND gate and the first input end of the fourth AND gate. An enable signal is input to the second input ends of the first AND gate, the second AND gate, the third AND gate and the fourth AND gate. The output ends of the first AND gate, the second AND gate, the third AND gate and the fourth AND gate are respectively connected to the bases of the first triode, the second triode, the third triode and the fourth triode. The collectors of the first triode and the third triode are powered. The emitters of the first triode and the third triode are respectively connected to the collectors of the second triode and the fourth triode. The emitters of the second triode and the fourth triode are connected to the first end of the current sensing resistor. The second end of the current sensing resistor is grounded. The first output end and the second output end of the module are respectively led out from the branches where the first triode and the second triode are connected, and the branches where the third triode and the fourth triode are connected. The first output end and the second output end of the module are connected to the drive circuit module.

2. The energy storage converter according to claim 1, characterized in that The first drive circuit module is a first H-bridge circuit module, the second drive circuit module is a second H-bridge circuit module, the output end of the first H-bridge circuit module is connected to the fan motor of the first fan, and the output end of the second H-bridge circuit module is connected to the fan motor of the second fan.

3. The energy storage converter according to claim 2, wherein The first H-bridge circuit module includes four three-terminal switching tubes and four diodes. The four three-terminal switching tubes are respectively a first three-terminal switching tube, a second three-terminal switching tube, a third three-terminal switching tube, and a fourth three-terminal switching tube. The four diodes are respectively a first diode, a second diode, a third diode, and a fourth diode. The control ends of the four three-terminal switching tubes are correspondingly connected to four pins of the logic control module. The first end of the first three-terminal switching tube, the negative electrode of the first diode, the first end of the third three-terminal switching tube, and the negative electrode of the third diode are all connected to the power supply end. The second end of the first three-terminal switching tube is connected to the first end of the second three-terminal switching tube. The positive electrode of the first diode is connected to the negative electrode of the second diode. The second end of the third three-terminal switching tube is connected to the first end of the fourth three-terminal switching tube. The positive electrode of the third diode is connected to the negative electrode of the fourth diode. The second ends of the second three-terminal switching tube, the second diode, the second end of the fourth three-terminal switching tube, and the positive electrode of the fourth diode are all connected to the ground end. The second end of the first three-terminal switching tube is also connected to the positive electrode of the first diode and forms a first output end. The second end of the third three-terminal switching tube is also connected to the positive electrode of the third diode and forms a second output end. The first output end and the second output end are respectively connected to the positive electrode and the negative electrode of the fan motor of the first fan; The second H-bridge circuit module includes four three-terminal switching tubes and four diodes. The four three-terminal switching tubes are respectively a fifth three-terminal switching tube, a sixth three-terminal switching tube, a seventh three-terminal switching tube, and an eighth three-terminal switching tube. The four diodes are respectively a fifth diode, a sixth diode, a seventh diode, and an eighth diode. The control terminals of the four three-terminal switching tubes are correspondingly connected to four pins of the logic control module. The first end of the fifth three-terminal switching tube, the negative electrode of the fifth diode, the first end of the seventh three-terminal switching tube, and the negative electrode of the seventh diode are all connected to the power supply terminal. The second end of the fifth three-terminal switching tube is connected to the first end of the sixth three-terminal switching tube. The positive electrode of the fifth diode is connected to the negative electrode of the sixth diode. The second end of the seventh three-terminal switching tube is connected to the first end of the eighth three-terminal switching tube. The positive electrode of the seventh diode is connected to the negative electrode of the eighth diode. The second ends of the sixth three-terminal switching tube, the positive electrode of the sixth diode, the second ends of the eighth three-terminal switching tube, and the positive electrode of the eighth diode are all connected to the ground terminal. The second end of the fifth three-terminal switching tube is also connected to the positive electrode of the fifth diode and forms a first output terminal. The second end of the seventh three-terminal switching tube is also connected to the positive electrode of the seventh diode and forms a second output terminal. The first output terminal and the second output terminal are respectively connected to the positive electrode and the negative electrode of the fan motor of the second fan.

4. The energy storage converter according to claim 1, wherein The logic control module includes a plurality of electrically connected logic gates.

5. The energy storage converter according to claim 1, characterized in that, The energy storage converter further includes: A plurality of temperature detection circuits installed in different detection areas, and the plurality of temperature detection circuits transmit temperature acquisition data to the corresponding logic control module through a bus.

6. The energy storage converter according to claim 5, wherein, The bus is used to transmit data signals and clock signals.

7. The energy storage converter according to claim 5, wherein The bus is a ZACwire bus.

8. The energy storage converter according to claim 1, characterized in that The energy storage converter further includes: A power detection circuit, and the power detection circuit is connected to the main control circuit of the converter.

9. The energy storage converter according to any one of claims 1 to 8, characterized in that, The first fan and the second fan are arranged opposite to each other.

10. The heat dissipation control method of the energy storage converter according to any one of claims 1 to 9, characterized in that, including: Determine whether a connection is successfully established between the main control circuit of the converter and the fan control circuits in each fan assembly; After the main control circuit of the converter successfully establishes a connection with each of the fan control circuits, the main control circuit of the converter sends a control strategy determined based on the heat dissipation requirement of the energy storage converter to the corresponding fan control circuit, so that after the fan control circuit translates the control strategy, it sends a translated control signal to the corresponding drive circuit module to drive the corresponding fan to operate.

11. The heat dissipation control method according to claim 10, characterized in that, Determining whether a connection is successfully established between the main control circuit of the converter and the fan control circuits in each fan assembly includes: The main control circuit of the converter assigns a unique physical address to the fan control circuits in each fan assembly; Based on the physical address, the main control circuit of the converter wakes up different fan control circuits at different time intervals, and determines that the connection between the main control circuit of the converter and each fan control circuit is successful when response signals sent by each fan control circuit are received.

12. The heat dissipation control method according to claim 10, wherein The control strategy determined based on the heat dissipation requirements of the energy storage converter includes: Obtain the temperature data detected in each detection area; Determine the control strategy corresponding to each detection area at least according to the temperature data detected in each detection area.

13. The heat dissipation control method according to claim 12, wherein Determine the control strategy corresponding to each detection area at least according to the temperature data detected in each detection area, including: Obtain the operation data of the energy storage converter, and the operation data at least includes power data; Determine the control strategy corresponding to each detection area according to the temperature data detected in each detection area and the operation data of the energy storage converter.

14. The heat dissipation control method according to claim 13, wherein, After determining the control strategy corresponding to each detection area according to the temperature data detected in each detection area and the operation data of the energy storage converter, the method further includes: After applying the control strategy to control the corresponding fan to operate and after a preset time period, obtain the updated temperature data of the corresponding detection area again; Determine whether the updated temperature data is greater than the temperature setting threshold; In the case where the updated temperature data is still greater than the temperature setting threshold, control to increase the operation parameters of the corresponding fan, and the operation parameters include at least one of air volume, air speed, air pressure, and blowing direction; In the case where the updated temperature data is less than or equal to the temperature setting threshold, control to decrease the operation parameters of the corresponding fan.

15. The heat dissipation control method according to claim 12, wherein Determine the control strategy corresponding to each detection area at least according to the temperature data detected in each detection area, including: Determine the control strategies of the first fan and the second fan at least according to the temperature data detected in each detection area and the installation positions of the first fan and the second fan in the same detection area, and the control strategy of the first fan is different from that of the second fan.

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