Energy storage converter and heat dissipation control method thereof

Abstract

The invention relates to the technical field of energy storage, and provides an energy storage converter and a heat dissipation control method thereof.The energy storage converter comprises a converter main control circuit and a plurality of fan assemblies, each fan assembly comprises two fans and a fan control circuit, and each fan control circuit comprises two drive circuit modules and a logic control module; the logic control module is connected with the first drive circuit module and the second drive circuit module, and the output end of the first drive circuit module and the output end of the second drive circuit module are correspondingly connected to a fan motor of a first fan and a fan motor of a second fan. The logic control module receives and responds to an output signal of the converter main control circuit and outputs control logic to control operation of the first fan and the second fan, control strategies of all the fans are stored in the converter main control circuit, and all the control strategies are determined based on the heat dissipation requirement of the energy storage converter. The problem that traditional fan control is difficult to meet the heat dissipation requirement of the energy storage converter is solved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage converter and a heat dissipation control method thereof. Background Art

[0002] Energy storage converters are mainly based on power electronics technology, which realizes AC / DC bidirectional conversion of electric energy by controlling the on / off of power devices. Power electronic devices (such as IGBT and MOSFET) generate heat when working, which is caused by energy loss during the switching process of the devices, resulting in temperature rise. Temperature is one of the key factors affecting the life of energy storage converters. In high temperature environments, the thermal stress inside the energy storage converter will increase, thereby shortening its service life.

[0003] Currently, traditional fan control is mostly used to achieve heat dissipation of energy storage inverters. However, the control mode of traditional fan control is relatively simple and cannot adjust parameters such as air volume and air pressure, making it difficult to meet the heat dissipation requirements of energy storage inverters. Summary of the invention

[0004] The main purpose of the present application is to provide an energy storage inverter and a heat dissipation control method thereof, so as to solve the problem that the traditional fan control mode in the prior art is relatively single and difficult to meet the heat dissipation requirements of the energy storage inverter.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, there is provided an energy storage converter, comprising: a converter main control circuit; a plurality of fan assemblies, each of the fan assemblies comprising two fans and a fan control circuit, the two fans being respectively a first fan and a second fan, each of the fan control circuits comprising two drive circuit modules and a logic control module, the two drive circuit modules being respectively a first drive circuit module and a second drive circuit module, the logic control module being respectively connected to the first drive circuit module and the second drive circuit module, the output end of the first drive circuit module being connected to the fan motor of the first fan, the output end of the second drive circuit module being connected to the fan motor of the second fan, each of the logic control modules being 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, and outputs control logic to control the operation of the first fan and the second fan, wherein the converter main control circuit stores control strategies of each of the fans, and each of the control strategies is determined based on the heat dissipation requirements of the energy storage converter.

[0006] Optionally, the first driving circuit module is a first H-bridge circuit module, the second driving 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.

[0007] Optionally, the first H-bridge circuit module includes four three-terminal switch tubes and four diodes, the four three-terminal switch tubes are respectively a first three-terminal switch tube, a second three-terminal switch tube, a third three-terminal switch tube and a fourth three-terminal switch 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 switch tubes are correspondingly connected to the four pins of the logic control module, the first end of the first three-terminal switch tube, the cathode of the first diode, the first end of the third three-terminal switch tube and the cathode of the third diode are all connected to the power supply end, the second end of the first three-terminal switch tube is connected to the first end of the second three-terminal switch tube, the first diode is connected to the first end of the The positive electrode of the third three-terminal switch tube is connected to the negative electrode of the second diode, the second end of the third three-terminal switch tube is connected to the first end of the fourth three-terminal switch 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 switch tube, the positive electrode of the second diode, the second end of the fourth three-terminal switch tube and the positive electrode of the fourth diode are all connected to the ground end, the second end of the first three-terminal switch tube is also connected to the positive electrode of the first diode and connected to form a first output end, the second end of the third three-terminal switch tube is also connected to the positive electrode of the third diode and connected to form a second output end, the first output end and the second output end are respectively connected to the positive electrode and negative electrode of the fan motor of the first fan. The second H-bridge circuit module includes four three-terminal switch tubes and four diodes, the four three-terminal switch tubes are respectively a fifth three-terminal switch tube, a sixth three-terminal switch tube, a seventh three-terminal switch tube and an eighth three-terminal switch tube, the four diodes are respectively a fifth diode, a sixth diode, a seventh diode and an eighth diode, the control ends of the four three-terminal switch tubes are correspondingly connected to the four pins of the logic control module, the first end of the fifth three-terminal switch tube, the cathode of the fifth diode, the first end of the seventh three-terminal switch tube and the cathode of the seventh diode are all connected to the power supply end, the second end of the fifth three-terminal switch tube is connected to the first end of the sixth three-terminal switch tube, the cathode of the fifth diode The positive electrode is connected to the negative electrode of the sixth diode, the second end of the seventh three-terminal switch tube is connected to the first end of the eighth three-terminal switch 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 switch tube, the positive electrode of the sixth diode, the second end of the eighth three-terminal switch tube and the positive electrode of the eighth diode are all connected to the ground end, the second end of the fifth three-terminal switch tube is also connected to the positive electrode of the fifth diode and connected to form a first output end, the second end of the seventh three-terminal switch tube is also connected to the positive electrode of the seventh diode and connected to form a second output end, and the first output end and the second output end are respectively connected to the positive electrode and 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 collection data to the corresponding logic control module via 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 converter main control circuit.

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

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

[0015] According to the second aspect of the present application, a heat dissipation control method for an energy storage inverter is provided, comprising: determining whether a connection is successfully established between the inverter main control circuit and the fan control circuit in each fan assembly; after the inverter main control circuit successfully establishes a connection with each fan control circuit, the inverter main control circuit sends a control strategy determined based on the heat dissipation requirement of the energy storage inverter to the corresponding fan control circuit, so that the fan control circuit translates the control strategy and then sends the 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 converter main control circuit and the fan control circuits in each fan assembly includes: the converter main control circuit assigning a unique physical address to the fan control circuits in each fan assembly; based on the physical address, the converter main control circuit wakes up different fan control circuits in time periods, and upon receiving a response signal sent by each fan control circuit, determines that the converter main control circuit is successfully connected to each fan control circuit.

[0017] Optionally, the control strategy determined based on the heat dissipation demand of the energy storage inverter includes: acquiring temperature data detected by each detection area; and determining the control strategy corresponding to each detection area at least based on the temperature data detected by each detection area.

[0018] Optionally, the control strategy corresponding to each detection area is determined at least based on the temperature data detected by each detection area, including: obtaining operating data of the energy storage inverter, the operating data at least including power data; and determining the control strategy corresponding to each detection area based on the temperature data detected by each detection area and the operating data of the energy storage inverter.

[0019] Optionally, after determining the control strategy corresponding to each detection area based on the temperature data detected in each detection area and the operating data of the energy storage inverter, the method also includes: after applying the control strategy to control the operation of the corresponding fan, 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 the temperature setting threshold; when the updated temperature data is still greater than the temperature setting threshold, controlling to increase the operating parameters of the corresponding fan, the operating parameters including at least one of air volume, wind speed, wind pressure, and blowing direction; when the updated temperature data is less than or equal to the temperature setting threshold, controlling to reduce the operating parameters of the corresponding fan.

[0020] Optionally, the control strategy corresponding to each detection area is determined at least based on the temperature data detected by each detection area, including: determining the control strategy of the first fan and the second fan at least based on the temperature data detected by each detection area and the installation position 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 locations of the energy storage converter that require heat dissipation, such as the power semiconductor device installation location, the capacitor installation location, the transformer installation location, the control board installation location, the input / output terminal and the connection line location, etc., and the control strategy of each fan is stored in the converter main control circuit in advance according to the heat dissipation requirements of different locations, so that the converter main control circuit generates corresponding control instructions according to the control strategy of each fan and transmits them to the logic control module, and the logic control module parses the control instruction to generate the corresponding logic output (0 or 1), which is transmitted to the corresponding drive circuit module to drive the fan motor, thereby achieving heat dissipation. Since the control strategy of each fan is formulated according to the actual heat dissipation requirements of different locations (i.e., different areas), the subsequent operation of the first fan and the second fan can meet the heat dissipation requirements accordingly, and flexible and rich fan control is achieved. Compared with the relatively single fan control mode in the prior art, the heat dissipation effect is obviously better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

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

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

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

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

[0027] Figure 5 Shows a plurality of fan control circuit schematic diagrams according to embodiments of the present application;

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

[0029] Figure 7 A partial structural diagram of a second specific logic control module according to an embodiment of the present application is shown;

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

[0031] Fig. 9 A flow chart of a heat dissipation control method for an energy storage converter according to an embodiment of the present application is shown;

[0032] Fig.10 A specific heat dissipation control method flow chart according to an embodiment of the present application is shown.

[0033] The above 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 switch tube; Q2. Second three-terminal switch tube; Q3. Third three-terminal switch tube; Q4. Fourth three-terminal switch tube; Q5. Fifth three-terminal switch tube; Q6. Sixth three-terminal switch tube; Q7. Seventh three-terminal switch tube; Q8. Eighth three-terminal switch 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, the first sensing resistor; RB, the second sensing resistor; Y1, the first AND gate; Y2, the second AND gate; Y3, the third AND gate; Y4, the fourth AND gate; Y5, the fifth AND gate; Y6, the sixth AND gate; Y7, the seventh AND gate; Y8, the eighth AND gate; T1, the first transistor; T2, the second transistor; T3, the third transistor; T4, the fourth transistor; T5, the fifth transistor; T6, the sixth transistor; T7, the seventh transistor; T8, the eighth transistor. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments 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 "comprise" and / or "include" are used in this specification, it indicates 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 being "on" another element, the element may be directly on the other element, or there may be intermediate elements. Moreover, in the specification and claims, when it is described that an element is "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element through a third element.

[0038] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0039] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0040] In the description of the embodiments of the present application, “plurality” means more than two, unless otherwise clearly and specifically defined.

[0041] The energy storage converter realizes the bidirectional conversion of AC and DC electric energy by controlling the on and off of power devices; power devices (IGBT, MOSFET) generate heat when working, which is specifically because the power devices will generate energy loss during the switching process, resulting in temperature rise. 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. Many explosion problems are caused by thermal imbalance. Traditional fan control methods are relatively simple; it is impossible to control and adjust the air volume and air pressure; it is difficult to adapt to the needs of intensive heat dissipation areas.

[0042] The relatively simple fan control mode in the prior art is: using the traditional ordinary fan fixed speed direct blowing heat dissipation mode; the control mode 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 inverter. In addition, the existing single fan control mode belongs to the open-loop control mode; it is impossible to adjust the required air pressure and air volume according to the power operation state of the energy storage inverter.

[0043] That is to say, the traditional fan control mode in the prior art is relatively simple and cannot meet the heat dissipation requirements of the energy storage inverter. In order to solve the problem that the traditional fan control mode is relatively simple and cannot meet the heat dissipation requirements of the energy storage inverter, the present application proposes an energy storage inverter and a heat dissipation control method thereof.

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

[0045] The embodiment of the present application provides an energy storage converter, see Figure 1 , Figure 2 and Figure 3, including: a converter main control circuit 10 and a plurality of 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 inverter main control circuit 10.

[0047] In addition, the fan assembly 20 in the present 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; and can reduce the data storage pressure of the inverter main control circuit 10 .

[0048] Figure 2 In the embodiment, the first fan and the second fan are arranged relative to each other. Such relative arrangement can maximize the heat dissipation function of the fans and facilitate installation and integration.

[0049] The inverter main control circuit and fan control circuit in this solution are both integrated ICs; see, Figure 2 The fan control circuit 22 in the integrated IC. The integrated IC is easy to install and saves space, which is convenient for large-scale production and convenient for industrial application. And the integrated IC can provide higher performance because the distance between components is closer, the signal transmission is faster, and the signal delay and interference are reduced. Furthermore, the integrated IC is generally more reliable than the discrete design because they have fewer connection points, which reduces the possibility of failure. In addition, the integrated IC is usually sealed, which helps to protect the internal components from environmental factors. In addition, the components in the integrated IC are arranged more closely and the signal path is shorter, so the power consumption is relatively low. Its integrated IC allows multiple functions to be integrated together in 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 the discrete design in terms of volume, cost, performance, reliability, power consumption, design flexibility, standardization, production speed and environmental impact. It is more convenient to use in the field of energy storage converters.

[0050] See also Figure 1, the first driving circuit module 221 is used to drive the fan motor 210 of the first fan, and the second driving circuit module 222 is used to drive the fan motor 211 of the second fan; that is, the first fan and the second fan are driven separately to achieve different control of the first fan and the second fan. This different control method can meet the diverse heat dissipation requirements and is more flexible. Of course, in some cases, the same control method can be used, for example, the same speed, the same blowing direction, the same air volume, and the same air pressure;

[0051] As mentioned above, the first fan and the second fan may be fans with exactly the same specifications, or fans with different specifications may be selected. For example, the first fan and the second fan may have different numbers of blades.

[0052] See also Figure 1 The logic control module 223 receives and responds to the output signal of the inverter main control circuit 10, and outputs the control logic to control the operation of the first fan and the second fan, wherein the inverter main control circuit 10 stores the control strategy of each fan, and each control strategy is determined based on the heat dissipation requirement of the energy storage inverter.

[0053] By using control logic to control the operation of the first fan and the second fan, the fans can be flexibly controlled. Furthermore, by controlling the differential speed of the dual motors to drive the dual blades of the fan to rotate, the air volume, air pressure, and air intake volume can be flexibly changed; the high-temperature area inside the energy storage inverter can be effectively dissipated in a targeted manner.

[0054] In addition, since the fan is controlled by the control logic, the inverter main control circuit can control the energy storage inverter to operate at a reduced rating according to the real-time operating power of the energy storage inverter, that is, the real-time operating power of the energy storage inverter meets 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 inverter is too high, the real-time operating power of the energy storage inverter is appropriately reduced to meet the operating requirements while reducing energy consumption. This solves the problem of reducing the power supply pressure of the auxiliary power board.

[0055] Figure 1 The converter main control circuit 10 may use an integrated controller;

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

[0057] The multiple fan assemblies in this solution are installed at different locations of the energy storage converter that require heat dissipation, such as the power semiconductor device installation location, the capacitor installation location, the transformer installation location, the control board installation location, the input / output terminal and the connection line location, etc., and the control strategy of each fan is stored in the converter main control circuit in advance according to the heat dissipation requirements of different locations, so that the converter main control circuit can generate corresponding control instructions according to the control strategy 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), which are transmitted to the corresponding drive circuit module to drive the fan motor, thereby achieving heat dissipation. Since the control strategy of each fan is formulated according to the actual heat dissipation requirements of different locations (i.e., different areas), the subsequent operation of the first fan and the second fan can meet the heat dissipation requirements accordingly, and flexible and rich fan control can be achieved. 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 and that the energy storage converter operates within a reasonable temperature rise range. This ensures the thermal stress safety of the energy storage converter and improves the electrical safety of the converter, thereby effectively extending the service life of the energy storage converter and improving the working efficiency of the energy storage converter.

[0059] In order to further realize the effective driving of the fan motor of the first fan and the fan motor of the second fan, the first driving circuit module selects the first H-bridge circuit module, and the second driving circuit module selects the 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. Specifically, the bidirectional driving capability of the H-bridge circuit module is used to drive the forward and reverse rotation of the fan motor, and the H-bridge circuit module has low power consumption and can save energy and improve heat dissipation efficiency. In addition, by controlling the switch of the H-bridge by PWM (pulse width modulation), 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 realize precise control of the fan. In addition, the H-bridge circuit module can withstand high voltage and high current, and can meet the heat dissipation requirements of the energy storage converter. In addition, the H-bridge circuit module can select different switching devices, such as MOSFET or IGBT, as needed to adapt to different application requirements. In addition, the modular design of the H-bridge circuit in this solution is convenient for integration into the fan control circuit.

[0060] See also Figure 4The 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 switch tubes and four diodes. The four three-terminal switch tubes are respectively a first three-terminal switch tube Q1, a second three-terminal switch tube Q2, a third three-terminal switch tube Q3 and a fourth three-terminal switch 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 switch tubes are correspondingly connected to the four pins of the logic control module 223. The first end of the first three-terminal switch tube Q1, the cathode of the first diode D1, the first end of the third three-terminal switch tube Q3 and the cathode of the third diode D3 are all connected to the power supply end. The second end of the first three-terminal switch tube Q1 is connected to the The first end of the second three-terminal switch tube Q2 and the anode of the first diode D1 are connected to the cathode of the second diode D2, the second end of the third three-terminal switch tube Q3 is connected to the first end of the fourth three-terminal switch tube Q4, the anode of the third diode D3 is connected to the cathode of the fourth diode D4, the second end of the second three-terminal switch tube Q2, the anode of the second diode D2, the second end of the fourth three-terminal switch tube Q4 and the anode of the fourth diode D4 are all connected to the ground end, the second end of the first three-terminal switch tube Q1 is also connected to the anode of the first diode D1 and connected to form a first output end, the second end of the third three-terminal switch tube Q3 is also connected to the anode of the third diode D3 and connected to form a second output end, and the first output end and the second output end 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 switch tubes and four diodes. The four three-terminal switch tubes are respectively a fifth three-terminal switch tube Q5, a sixth three-terminal switch tube Q6, a seventh three-terminal switch tube Q7 and an eighth three-terminal switch tube Q8. The four diodes are respectively a fifth diode D5, a sixth diode D6, a seventh diode D7 and an eighth diode D8. The control ends of the four three-terminal switch tubes are correspondingly connected to the four pins of the logic control module 223. The first end of the fifth three-terminal switch tube Q5, the cathode of the fifth diode D5, the first end of the seventh three-terminal switch tube Q7 and the cathode of the seventh diode D7 are all connected to the power supply end. The second end of the fifth three-terminal switch tube Q5 is connected to the first end of the sixth three-terminal switch tube Q6. The fifth two The anode of the diode D5 is connected to the cathode of the sixth diode D6, the second end of the seventh three-terminal switch tube Q7 is connected to the first end of the eighth three-terminal switch tube Q8, the anode of the seventh diode D7 is connected to the cathode of the eighth diode D8, the second end of the sixth three-terminal switch tube Q6, the anode of the sixth diode D6, the second end of the eighth three-terminal switch tube Q8 and the anode of the eighth diode D8 are all connected to the ground terminal, the second end of the fifth three-terminal switch tube Q5 is also connected to the anode of the fifth diode D5 and connected to form a first output terminal, the second end of the seventh three-terminal switch tube Q7 is also connected to the anode of the seventh diode D7 and connected to form a second output terminal, and the first output terminal and the second output terminal are respectively connected to the anode and the cathode of the fan motor 211 of the second fan. ;

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

[0062] Figure 4 The positive terminal of the fan motor 210 of the first fan is connected to the branch between the first diode D1 and the second diode D2, and the negative terminal 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 fan motor 211 of the second fan is connected to the branch between the fifth diode D5 and the sixth diode D6, and the negative terminal 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 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, pin A0 to pin A7 are connected to the MOSFET switch tubes 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 switch tube in the circuit is a MOSFET switch tube, and the diode is a clamping diode. While realizing the forward and reverse control and speed control of the fan, it can withstand high voltage and high current and is suitable for various motor differential control. In short, the H-bridge circuit module using MOSFET switch tubes and clamping diodes has many advantages such as high efficiency, bidirectional control capability, 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) is a power electronic device with low on-resistance, especially in high-power applications, which can significantly reduce energy loss and improve circuit efficiency. Compared with traditional BJT (bipolar junction transistor) or other types of transistors, MOSFET has higher efficiency in high-frequency switching applications because they generate almost no 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 alternating the conduction and cutoff of two pairs of MOSFET switch tubes, the direction of the current flowing to the motor can be easily changed to realize 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 and pressure. MOSFET has a fast switching speed and can respond to control signals quickly, which is very important for accurately controlling the fan speed, especially in situations where the air volume and air pressure need to be adjusted frequently. Fast response time means that more precise control effects can be achieved. The nonlinear saturation characteristics of MOSFET reduce the impact current during the switching process and extend the life of the device. At the same time, the use of clamping diodes can protect the MOSFET switch tube from the impact of reverse voltage peaks, prevent the back electromotive force generated when the motor suddenly stops or commutates from damaging the MOSFET, and enhance the reliability of the circuit. The static loss of MOSFET in the on state is very small and can be almost ignored. This means that even under no load conditions, MOSFET will not generate too much heat, which helps to keep the circuit module running at a low temperature and improve the thermal stability of the entire system. MOSFET is very suitable for PWM (pulse width modulation) control, which can accurately control the fan speed by adjusting the time that the MOSFET is in the on state. PWM control can not only achieve stepless adjustment of fan speed, but also help reduce electromagnetic interference and improve control accuracy. The combination of MOSFET and clamping diode can simplify the design of H-bridge circuit and reduce the complexity of peripheral circuits. The gate drive of MOSFET is simple, and only the appropriate gate voltage needs to be provided, while the clamping diode ensures that the protection circuit of MOSFET is simple and effective, reducing the circuit design cost and failure rate. Although high-level MOSFET may be more expensive than some other types of switch tubes, considering its high efficiency, reliability and the long-term maintenance cost reduction brought by simplified circuit, overall, the choice of MOSFET provides a good cost-effective ratio.

[0066] Applies to Figure 4 A truth table of the scheme in is shown in Table 1:

[0067] Table 1 Truth table

[0068]

[0069] Motor 1 in Table 1 is the fan motor of the first fan, and motor 2 is the fan motor of the second fan. The level states of A0-A7 are changed according to the control algorithm logic to realize 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 the module to achieve speed regulation of the motor;

[0071] Figure 5 A schematic diagram including multiple fan control circuits is shown, and it can be seen that two fan control circuits share a bus. Figure 5 The two fan control circuits are only exemplary. In actual applications, all fan control circuits share a bus to transmit signals with the inverter main control circuit 10. In other words, multiple logic control modules 223 are connected to the same pin of the inverter main control circuit. That is, multiple fan control circuits only need to occupy one I / O port of the inverter main control circuit, which can save the interface resources of the inverter main control circuit 10, and has a simple structure, low cost, and is convenient for bus expansion and maintenance. In addition, the solution of the present application realizes group string use. However, in the prior art, one fan occupies one power interface, and group string use cannot be realized, resulting in a waste of I / O port resources.

[0072] To achieve differentiated control over the first fan and the second fan, a logic control module including a plurality of electrically connected logic gates may be used. Specifically, the logic gates include AND gates, NOT gates and other gate circuits. The corresponding truth table is implemented by a plurality of electrically connected logic gates.

[0073] A more specific implementation method, such as Figure 6 and Figure 7 As shown, the logic control module consists of four Figure 6 The module composition shown in Figure 7 The connection mode of two modules is shown, and the connection mode 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. The control logic of the AND gate and the working principle of the triode are applied to realize the corresponding output. Figure 7OUT1, OUT2, OUT3 and OUT4 in the Figure 4 The output of pin A0, the output of pin A1, the output of pin A2 and the output of pin A3.

[0074] Figure 7 The first sensing resistor RA and the second sensing resistor RB are current sensing resistors, which can be used to monitor the current of the motor. The current acting on the motor terminal is changed by changing the current sensing resistor, thereby changing the speed of the motor.

[0075] In addition, the operating status of the fan motor can also be monitored based on the size 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, then it is determined that the fan motor is operating abnormally. Conversely, if the current flowing through the current sensing resistor is within the preset current range, then it is determined that the fan motor is operating normally.

[0076] In order to achieve accurate and flexible heat dissipation control of the energy storage converter, the energy storage converter also includes: multiple temperature detection circuits installed in different detection areas, and the multiple temperature detection circuits transmit the temperature collection data to the corresponding logic control module through a bus. The single bus time-sharing transmission method is adopted to realize the transmission of temperature collection data of multiple different detection areas through one bus, and the collected temperature data of different areas are transmitted to the converter main control circuit through one bus, which saves the IO port of the converter main control circuit and facilitates the converter main control circuit to formulate different heat dissipation control strategies.

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

[0078] In the embodiment of the present application, the bus is used to transmit data signals and clock signals. Among them, the data signal includes a temperature acquisition data signal, a control strategy signal, etc. The use of 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 the energy storage converter, space saving can help to achieve a more compact structural design and a more efficient heat dissipation layout. And the transmission of signals on the bus is bidirectional. Furthermore, the use of 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, the single bus architecture can more easily expand the system because the newly added equipment only needs to be connected to the existing bus without adding additional data or clock signal lines. At the same time, it also simplifies fault diagnosis and maintenance because the possible points of cable failure are reduced. Fewer signal lines means lower signal transmission power consumption, which can significantly extend the operating time of the device or reduce energy consumption for battery-powered systems or systems that require efficient energy management (such as energy storage converters). Single bus technology facilitates integrated design. The ZACwire single bus communication module is able to send and receive data in different time domains, which makes data read and write operations 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 follows: Figure 8 As shown, a data relationship mapping is established between the inverter main control circuit and the integrated fan control circuit; the GPIO port of the inverter main control circuit and the logic control module IC COM / out-in pin undergo logic changes within a cycle T; logic 1 is sending data; logic 0 is receiving data; thereby achieving different states and data on the bus at different timing intervals. According to this rule, the inverter main control circuit can write and read data to the logic control module IC at different timings; thereby achieving single bus data transmission. The data content includes fan start signal; fan stop signal, dual-machine differential operation data, current signal, etc.

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

[0081] In addition, the fan control circuit in this solution uses a low-power (typical value is 30μA) power supply, which effectively reduces the output power of the PCS auxiliary power board and helps to improve the overall efficiency of the energy storage converter and reduce economic costs.

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

[0083] Furthermore, since the heat generation of different operating power converters is different, the integrated control system can use factors such as converter operating power, grid-connected form, load state, and internal area temperature to achieve closed-loop coordinated control of the energy storage converter, improve the highly intelligent ability of the energy storage converter, and form a dual drive on the demand side and the supply side. Specifically, the converter main control circuit 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 converter main control circuit; the grid-connected state monitoring module detects the grid-connected state and load condition of the converter and transmits the data to the converter main control circuit. The converter main control circuit combines the operating power, grid-connected form, load state, and internal area temperature to evaluate the heat dissipation requirements of each detection area. According to the heat dissipation demand evaluation results, the converter main control circuit sends control instructions to the intelligent fan module through the ZACwire bus to adjust the air volume, wind speed, and wind pressure to achieve the thermal management goals on the demand side. In addition, the real-time monitored temperature data, operating power, and load state 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 operating parameters according to the instructions of the control unit, and the supply side responds to the changes on the demand side to achieve accurate supply of air volume and air pressure. Monitor the heat dissipation effect (by updating the temperature data) and feed back the results to the inverter main control circuit, adjust the control strategy according to the feedback results, and form a closed-loop control.

[0084] In the open-loop control scheme, the fan keeps running after starting, which makes it impossible to achieve the control strategy of coordinated cooling effect and operating power of the whole machine, and it is impossible to perform comprehensive coordinated control according to the actual operating temperature of the converter, resulting in a relatively low level of intelligence in the existing technology. The closed-loop control method of this scheme overcomes the shortcomings of open-loop control.

[0085] The embodiment of the present application also provides a heat dissipation control method for an energy storage converter, which is applied to Figure 1 and Figure 2 For the energy storage converter in the example, the heat dissipation control method can be found in Fig. 9 ,include:

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

[0087] To facilitate the subsequent transmission of control signals, a communication connection needs to be established between the inverter main control circuit 10 and the fan control circuit 22 in each fan assembly 20 before signal transmission. For details, see the above description of establishing communication through a bus.

[0088] Step S102: After the inverter main control circuit 10 successfully establishes a connection with each fan control circuit 22, the inverter main control circuit 10 sends the control strategy determined based on the heat dissipation requirement of the energy storage inverter to the corresponding fan control circuit 22, so that the fan control circuit 22 translates the control strategy and sends the translated control signal to the corresponding drive circuit module to drive the corresponding fan to operate.

[0089] The existing solution uses the power board to directly control the fan, and uses a constant power speed. There is a phenomenon that the fan is always idling when there is no need for heat dissipation, and the power consumption of the auxiliary power board is always in a constant energy consumption state, resulting in high losses in the energy storage converter. However, the control strategy determined based on the heat dissipation requirements of the energy storage converter in this solution is obviously energy-saving when the fan is stopped when heat dissipation is not required.

[0090] The multiple fan assemblies in this solution are installed at different locations of the energy storage inverter that require heat dissipation, such as the power semiconductor device installation location, capacitor installation location, transformer installation location, control board installation location, input / output terminal and connection line location, etc. Corresponding control strategies are formulated for different locations that require heat dissipation, and then sent to the corresponding fan control circuit, so that the fan control circuit translates the control strategy and sends the translated control signal to the corresponding drive circuit module to drive the corresponding fan to operate. Since the control strategy of each fan is formulated according to the actual heat dissipation requirements of different locations (i.e., different areas), the subsequent operation of the first fan and the second fan can meet the heat dissipation requirements accordingly, 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.

[0091] In a specific embodiment, step S101: determining whether a connection is successfully established between the converter main control circuit 10 and the fan control circuit 22 in each fan assembly 20, includes:

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

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

[0094] By assigning a unique physical address, each fan control circuit 22 is uniquely identified, which facilitates the subsequent awakening of different fan control circuits 22 in different time periods. In addition, through the unique physical address, the inverter main control circuit 10 can accurately control each fan component 20 to achieve independent operation and personalized settings. This makes the heat dissipation control more refined, and the corresponding fan speed and air volume can be adjusted according to the temperature requirements of different areas of the inverter to improve the heat dissipation efficiency.

[0095] In addition, the allocation of physical addresses allows the inverter main control circuit 10 to adopt a single bus communication method, which means that multiple fan components 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 the MCU's I / O ports, reserve more interface resources for other functional modules, simplify circuit board design, and reduce hardware costs. Each fan component 20 has a unique physical address, which makes it more flexible to add or remove fan components 20 in the system without rewiring or extensive software modifications. At the same time, the address allocation and response signal mechanism facilitates fault diagnosis and can quickly locate which fan components 20 have communication problems or abnormal operation.

[0096] The time-segmented wake-up mechanism can prevent multiple fan control circuits 22 from competing for bus access rights at the same time, reduce communication conflicts, and improve the efficiency and accuracy of data transmission. This mechanism also allows the inverter main control circuit 10 to selectively communicate with a specific fan assembly 20, avoiding unnecessary signal transmission and reducing communication power consumption.

[0097] By confirming the connection is successful through the response signal, it can ensure that each fan control circuit is running under the correct configuration, avoiding thermal runaway caused by communication errors. This mechanism also enhances the fault tolerance of the system. Even if a component fails, the system can continue to operate, but the cooling strategy may need to be adjusted.

[0098] Precise control based on physical addresses enables the inverter master control circuit to execute complex cooling strategies, such as adjusting the fan speed in real time according to the temperature, or adopting a "pin-in-the-slot" control method, that is, dynamically adjusting the fan operating status when needed, which helps to improve the overall cooling efficiency and energy utilization efficiency of the system.

[0099] The physical address allocation and time-slot wake-up mechanism simplifies the software control logic because the main control circuit can manage different fan components through simple address recognition without complex multi-threading or multi-device synchronization mechanism.

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

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

[0102] Acquire temperature data detected in each detection area; and determine a control strategy corresponding to each detection area at least based on the temperature data detected in each detection area.

[0103] In the specific implementation, it is assumed that during the operation of the energy storage converter, the temperature monitoring value of the power module area (such as IGBT) reaches 70°C, while the temperature of the capacitor area is 55°C. The temperatures of these two areas exceed the safe range of normal operation. The integrated control unit determines through algorithm analysis that the power module area needs to strengthen heat dissipation immediately, while the capacitor area can be processed later. The converter main control circuit sends instructions to the intelligent fan module mounted in the power module area through the ZACwire bus to increase the fan speed and wind pressure to quickly reduce the temperature of the area. Considering the low temperature in the capacitor area, the converter main control circuit chooses a milder heat dissipation strategy and only increases the fan speed moderately to prevent unnecessary energy waste. That is, during the operation of the entire converter, the integrated control unit will continue to monitor the temperature of all areas. If the temperature of the capacitor area begins to rise, the converter main control circuit 10 will adjust the fan control parameters of the area accordingly, otherwise it will reduce the fan speed.

[0104] In addition, a control strategy corresponding to each detection area is determined at least based on the temperature data detected in each detection area, including: obtaining operating data of the energy storage inverter, the operating data at least including power data; and determining a control strategy corresponding to each detection area based on the temperature data detected in each detection area and the operating data of the energy storage inverter.

[0105] According to the different operating power parameters of the converter, the wind pressure and wind speed of the cooling fans are comprehensively coordinated and controlled. The speed regulation of multiple string cooling fans is realized through a single bus in a targeted manner; it has the technical characteristics of changing the comprehensive fusion control of air volume and wind 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 the corresponding fan is controlled by the application control strategy and after a preset period of time, the updated temperature data of the corresponding detection area is obtained again; by obtaining the updated temperature data of the detection area again after a period of time after the application control strategy, the system can monitor the heat dissipation effect in real time to ensure the continued effectiveness of the heat dissipation strategy. This mechanism avoids the problem of insufficient 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 guideline for heat dissipation control, ensuring that the fan operation is accurately matched to the internal temperature of the inverter. When the temperature is higher than the threshold, the increase in the fan operating parameters can quickly reduce the temperature, and after the temperature stabilizes or falls below the threshold, the reduction in the operating parameters avoids unnecessary energy waste and achieves refined temperature control.

[0109] When the updated temperature data is still greater than the temperature setting threshold, the corresponding fan operating parameters are controlled to increase, and the operating parameters include at least one of air volume, wind speed, wind pressure, and blowing direction; equipment failures caused by excessive temperature are reduced and the stability of system operation is improved.

[0110] When the updated temperature data is less than or equal to the temperature setting threshold, the operation parameter of the corresponding fan is controlled to be reduced.

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

[0112] In some embodiments, determining a control strategy corresponding to each detection area at least based on the temperature data detected by each detection area includes:

[0113] 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, the control strategy of the first fan and the second fan is determined, and the control strategy of the first fan is different from the control strategy of the second fan. The first fan and the second fan can implement differentiated control strategies to meet the heat dissipation requirements of different positions in the same heat dissipation area, thereby achieving more targeted and flexible heat dissipation control. This differentiated 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 combination with specific embodiments.

[0115] Heat dissipation method used in Figure 1 and Figure 2 Energy storage converter in Fig.10 The heat dissipation method includes the following steps:

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

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

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

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

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

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

[0122] Step S7: repeatedly collecting temperature data of the converter body area;

[0123] Step S8: Obtaining converter operation data; operating power, grid-connected form, and load status;

[0124] Step S9: Run the preset operating power / temperature code to call the command; perform different coordinated adjustments of air volume and air pressure under different powers, and determine whether the expected control effect is achieved. If not, return to step S8, and if so, execute step S10;

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

[0126] In addition, the temperature thresholds of multiple different detection areas are calculated at the same time, and reasonable derated exhaust is performed according to the preconditions. While effectively exhausting and dissipating heat, the fan component can also be derated according to the actual temperature threshold to achieve derated energy saving. That is, if it is detected that the real-time temperature is lower than the temperature threshold of the corresponding area, at least one of the fan speed, air volume, and wind speed can be reduced to achieve derated operation, which helps to improve the overall working efficiency of the energy storage converter.

[0127] Step S10: comparing and judging based on the recovery temperature threshold; executing fan derating operation;

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

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

Claims

1. An energy storage converter, characterized in that: include: Converter main control circuit; A plurality of fan assemblies, each of the fan assemblies comprises 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 comprises 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, and each of the logic control modules is connected to the inverter main control circuit, The logic control module receives and responds to the output signal of the inverter main control circuit, and outputs control logic to control the operation of the first fan and the second fan, wherein the inverter main control circuit stores the control strategy of each fan, and each control strategy is determined based on the heat dissipation requirements of the energy storage inverter.

2. The energy storage converter according to claim 1, characterized in that: The first driving circuit module is a first H-bridge circuit module, the second driving 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, characterized in that: The first H-bridge circuit module includes four three-terminal switch tubes and four diodes, the four three-terminal switch tubes are respectively a first three-terminal switch tube, a second three-terminal switch tube, a third three-terminal switch tube and a fourth three-terminal switch 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 switch tubes are correspondingly connected to the four pins of the logic control module, the first end of the first three-terminal switch tube, the cathode of the first diode, the first end of the third three-terminal switch tube and the cathode of the third diode are all connected to the power supply end, the second end of the first three-terminal switch tube is connected to the first end of the second three-terminal switch tube, the positive end of the first diode is connected to the positive end of the second diode, and the positive end of the first diode is connected to the positive end of the second diode. The anode of the third three-terminal switch tube is connected to the cathode of the second diode, the second end of the third three-terminal switch tube is connected to the first end of the fourth three-terminal switch tube, the anode of the third diode is connected to the cathode of the fourth diode, the second end of the second three-terminal switch tube, the anode of the second diode, the second end of the fourth three-terminal switch tube and the anode of the fourth diode are all connected to the ground terminal, the second end of the first three-terminal switch tube is also connected to the anode of the first diode and connected to form a first output terminal, the second end of the third three-terminal switch tube is also connected to the anode of the third diode and connected to form 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 switch tubes and four diodes, the four three-terminal switch tubes are respectively a fifth three-terminal switch tube, a sixth three-terminal switch tube, a seventh three-terminal switch tube and an eighth three-terminal switch tube, the four diodes are respectively a fifth diode, a sixth diode, a seventh diode and an eighth diode, the control ends of the four three-terminal switch tubes are correspondingly connected to the four pins of the logic control module, the first end of the fifth three-terminal switch tube, the cathode of the fifth diode, the first end of the seventh three-terminal switch tube and the cathode of the seventh diode are all connected to the power supply end, the second end of the fifth three-terminal switch tube is connected to the first end of the sixth three-terminal switch tube, the positive end of the fifth diode is connected to the positive end of the fifth diode The cathode of the sixth diode is connected to the cathode of the sixth diode, the second end of the seventh three-terminal switch tube is connected to the first end of the eighth three-terminal switch tube, the anode of the seventh diode is connected to the cathode of the eighth diode, the second end of the sixth three-terminal switch tube, the anode of the sixth diode, the second end of the eighth three-terminal switch tube and the anode of the eighth diode are all connected to the ground terminal, the second end of the fifth three-terminal switch tube is also connected to the anode of the fifth diode and connected to form a first output terminal, the second end of the seventh three-terminal switch tube is also connected to the anode of the seventh diode and connected to form a second output terminal, and the first output terminal and the second output terminal are respectively connected to the positive and negative electrodes of the fan motor of the second fan.

4. The energy storage converter according to claim 1, characterized in that: 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 also includes: A plurality of temperature detection circuits are installed in different detection areas, and the plurality of temperature detection circuits transmit temperature collection data to the corresponding logic control module via a bus.

6. The energy storage converter according to claim 5, characterized in that: The bus is used to transmit data signals and clock signals.

7. The energy storage converter according to claim 5, characterized in that: The bus is a ZACwire bus.

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

9. The energy storage converter according to claim 1, characterized in that: A plurality of the logic control modules are connected to the same pin of the converter main control circuit.

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

11. A heat dissipation control method for an energy storage converter according to any one of claims 1 to 10, characterized in that: include: Determining whether a connection is successfully established between the converter main control circuit and the fan control circuit in each fan assembly; After the inverter main control circuit successfully establishes a connection with each of the fan control circuits, the inverter main control circuit will send a control strategy determined based on the heat dissipation requirements of the energy storage inverter to the corresponding fan control circuit, so that the fan control circuit translates the control strategy and sends the translated control signal to the corresponding drive circuit module to drive the corresponding fan to operate.

12. The heat dissipation control method according to claim 11, characterized in that: Determining whether a connection is successfully established between the converter main control circuit and the fan control circuit in each fan assembly includes: The inverter main control circuit allocates a unique physical address to the fan control circuit in each of the fan assemblies; Based on the physical address, the inverter main control circuit wakes up different fan control circuits in time periods, and upon receiving a response signal sent by each fan control circuit, determines that the inverter main control circuit is successfully connected to each fan control circuit.

13. The heat dissipation control method according to claim 11, characterized in that: The control strategy determined based on the heat dissipation requirement of the energy storage converter includes: Obtain the temperature data detected in each detection area; The control strategy corresponding to each of the detection areas is determined at least according to the temperature data detected by each of the detection areas.

14. The heat dissipation control method according to claim 13, characterized in that: Determining the control strategy corresponding to each of the detection areas at least according to the temperature data detected by each of the detection areas includes: Acquiring operating data of the energy storage converter, wherein the operating data at least includes power data; The control strategy corresponding to each of the detection areas is determined according to the temperature data detected by each of the detection areas and the operation data of the energy storage converter.

15. The heat dissipation control method according to claim 14, characterized in that: After determining the control strategy corresponding to each of the detection areas according to the temperature data detected by each of the detection areas and the operation data of the energy storage converter, the method further includes: After the control strategy is applied to control the corresponding fan to run, and after a preset time period has passed, updated temperature data of the corresponding detection area is obtained again; Determining whether the updated temperature data is greater than a temperature setting threshold; When the updated temperature data is still greater than the temperature setting threshold, controlling to increase the corresponding operating parameter of the fan, the operating parameter including at least one of air volume, wind speed, wind pressure, and blowing direction; When the updated temperature data is less than or equal to the temperature setting threshold, the operation parameter of the corresponding fan is controlled to be reduced.

16. The heat dissipation control method according to claim 13, characterized in that: Determining the control strategy corresponding to each of the detection areas at least according to the temperature data detected by each of the detection areas includes: The control strategies of the first fan and the second fan are determined at least based on 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 the control strategy of the second fan.

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