Instrument-and-play power unit integrated module

Abstract

The utility model discloses a ready-to-use power unit integrated module, comprising a main power PCB, the main power PCB is connected with a film capacitor pool, a driving board, an IGBT module and a PWM wave access port, the IGBT module and the PWM wave access port are respectively electrically connected with the driving board, the main power PCB is connected with a fixed support, a fan and a radiator are connected in the fixed support, and the fixed support is connected with a power supply. The radiator is connected with the IGBT module through a heat conduction copper bar, and the fan is electrically connected with the main power PCB. The device has the advantages of high integration level, small size, high power density and convenience in maintenance and replacement; a PWM signal is accessed through the PWM wave access port according to requirements, and corresponding power conversion is carried out under the control of software; the specifications of the membrane capacitor pool and the IGBT module can be selected according to the application power section and the voltage platform, and the flexibility is high; heat conduction copper bars are buried in the radiator and can be matched with a high-rotating-speed fan to effectively dissipate heat, so that the platform can be applied to a higher power section.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of integrated module, specifically relates to a power unit integrated module of just install and use. BACKGROUND

[0002] With the rapid development of photovoltaic and energy storage, the demand for high-power converter is higher and higher, and the converter gradually develops towards high voltage and high power. The power conversion unit is the core component of the power converter. In order to reduce the voltage resistance requirement of the device and modulate the ideal sine degree of the waveform, it gradually changes from two levels to three levels, among which NPC1 three-level topology is most commonly used, which is more suitable for high-voltage and high-power circuits. The topology is composed of 4 IGBT T1, T2, T3, T4 and corresponding anti-parallel diodes D1, D2, D3, D4, and two clamping diodes Da and Db, a total of 10 power devices. Different modes are composed by controlling the switching state of the four IGBTs through PWM waves. Each IGBT can withstand at most half of the maximum system bus voltage.

[0003] The existing high-power platform is composed of a power unit by combining laminated busbars or PCB boards with modules, bus capacitors and drives. The existing technical solution has the problems of large size, high cost, scattered functional modules, long drive circuit and easy influence of other devices on the heat dissipation duct.

[0004] In summary, there is an urgent need for a power unit module with complete protection function, high integration, high power density and easy heat dissipation. INVENTION CONTENTS

[0005] To solve the above problems, especially for the deficiencies of the prior art, the utility model provides a power unit integrated module which can solve the above problems.

[0006] To achieve the above purpose, the utility model adopts the following technical means:

[0007] A power unit integrated module for just installing and using, comprising a main power PCB board, the main power PCB board is connected with a film capacitor cell, a drive board, an IGBT module and a PWM wave access port, and the IGBT module and the PWM wave access port are electrically connected with the drive board respectively;

[0008] The main power PCB board is connected with a fixing support, the fixing support is connected with a fan and a radiator inside, the radiator is connected with the IGBT module through a heat-conducting copper strip, and the fan is electrically connected with the main power PCB board.

[0009] Further, the fixing support is made of stainless steel.

[0010] The further scheme of the utility model discloses, the fixed support is connected with the filter screen corresponding to the fan.

[0011] The further scheme of the utility model discloses, the air outlet of the fan corresponds with the heat dissipation end of the radiator.

[0012] The further scheme of the utility model discloses, the fan is electrically connected with the PWM wave access port.

[0013] The further scheme of the utility model discloses, the radiator is connected with the handle that symmetrically distributes.

[0014] The utility model discloses beneficial effect:

[0015] 1, the utility model discloses high integration, small volume power density is big, the membrane capacitor cell, drive board, fan, main power PCB board, IGBT module, PWM wave access port, radiator are integrated in one, can be as independent power unit and place in system cabinet, convenient maintenance replacement, according to demand through the PWM wave access port and access PWM signal, corresponding power conversion is carried out under the control of software, and the specification of membrane capacitor cell and IGBT module can be selected according to application power segment and voltage platform Device specification has high flexibility.

[0016] 2, the utility model discloses that independent fan and radiator are integrated, and the radiator is buried with heat conduction copper bar, and cooperation high -speed fan can effectively radiate heat, so that the platform can be applied to higher power segment. DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model discloses;

[0018] Figure 2 It is the structural schematic diagram of the radiator of the utility model discloses;

[0019] Reference signs:

[0020] Membrane capacitor cell 101, drive board 102, fixed support 103, fan 104, filter screen 105, main power PCB board 106, IGBT module 107, PWM wave access port 108, radiator 109, heat conduction copper bar 110, handle 111. Specific implementation

[0021] The technical scheme of the utility model will be described in detail below in conjunction with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0022] Embodiment 1

[0023] As Figure 1-2 shown, a ready-to-use power unit integrated module includes a main power PCB board 106, the main power PCB board 106 is connected with a film capacitor bank 101, a driving board 102, an IGBT module 107, and a PWM wave access port 108, the IGBT module 107 and the PWM wave access port 108 are respectively electrically connected with the driving board 102;

[0024] The main power PCB board 106 is connected with a fixed support 103, the fixed support 103 is connected with a fan 104 and a radiator 109 inside, the radiator 109 is connected with the IGBT module 107 through a heat-conducting copper strip 110, and the fan 104 is electrically connected with the main power PCB board 106.

[0025] Working principle:

[0026] The film capacitor bank 101 utilizes the energy storage characteristics of capacitors to play a role in filtering, coupling, bypassing, etc. in the circuit, stabilizes the voltage, reduces voltage fluctuations and interference, and improves the stability and reliability of the circuit;

[0027] The main power PCB board 106 serves as a carrier for electrical connection and signal transmission, connects various electronic components into a complete circuit system, enables the transmission and distribution of electrical energy between different components, and realizes various complex circuit functions such as power amplification, conversion, and control;

[0028] When the gate receives a positive voltage signal from the driving board 102, the internal structure of the IGBT module 107 changes, an electrically conductive channel is formed between the collector and the emitter, and the current flows from the collector to the emitter, making the main circuit conductive; when the gate voltage is zero or negative, the electrically conductive channel between the collector and the emitter disappears, and the main circuit is turned off, thereby realizing the control and conversion of the main circuit power;

[0029] The PWM wave access port 108 receives a PWM signal from a control chip or other control source, and the signal has a fixed frequency and a variable duty cycle. By changing the duty cycle, the average voltage or current size of the output signal can be adjusted, and the device connected to the port can be precisely controlled;

[0030] The driving board 102 receives power and control signals from the main power PCB board 106, and sends driving signals to the IGBT module 107 on the main power PCB board 106 to control its switching;

[0031] The driving board 102 is connected with the PWM wave access port 108 through a line, receives a PWM signal to realize precise control of the IGBT module 107;

[0032] The fan 104 is connected with the main power PCB 106 to receive power supply and control signals; when the fan 104 is powered on, the motor is powered, the rotor rotates in the magnetic field generated by the stator, drives the fan blade to rotate, and makes the air flow accelerate, so as to achieve the purpose of fast heat dissipation of the radiator 109.

[0033] The radiator 109 is tightly attached to the IGBT module 107 through the heat-conducting copper strip 110, and the heat generated by the IGBT module 107 during operation is conducted away through the heat-conducting copper strip 110, so as to reduce the temperature of the IGBT module 107 and prevent the IGBT module 107 from being damaged due to overheating.

[0034] Embodiment 2

[0035] As shown in Figure 1-2 A ready-to-use power unit integrated module includes a main power PCB 106, the main power PCB 106 is connected with a film capacitor cell 101, a driving board 102, an IGBT module 107, and a PWM wave access port 108, and the IGBT module 107 and the PWM wave access port 108 are respectively electrically connected with the driving board 102.

[0036] The main power PCB 106 is connected with a fixed support 103, the fixed support 103 is connected with a fan 104 and a radiator 109, the radiator 109 is connected with the IGBT module 107 through a heat-conducting copper strip 110, and the fan 104 is electrically connected with the main power PCB 106.

[0037] The fixed support 103 is made of stainless steel. The stainless steel product has good hardness, and also has good wear resistance and corrosion resistance, so that the service life of the fixed support 103 made of stainless steel is long.

[0038] The fixed support 103 is connected with a filter screen 105 corresponding to the fan 104. This arrangement can facilitate air suction of the fan 104, can prevent the fan 104 from sucking in sundries during air suction, and effectively improves the working efficiency and effect of the fan 104.

[0039] Embodiment 3

[0040] As shown in Figure 1-2 A ready-to-use power unit integrated module includes a main power PCB 106, the main power PCB 106 is connected with a film capacitor cell 101, a driving board 102, an IGBT module 107, and a PWM wave access port 108, and the IGBT module 107 and the PWM wave access port 108 are respectively electrically connected with the driving board 102.

[0041] The main power PCB 106 is connected with a fixing support 103, the fixing support 103 is connected with a fan 104 and a radiator 109, the radiator 109 is connected with the IGBT module 107 through a heat-conducting copper strip 110, and the fan 104 is electrically connected with the main power PCB 106.

[0042] The air outlet of the fan 104 corresponds to the radiating end of the radiator 109.

[0043] The fan 104 is electrically connected with the PWM wave access port 108.

[0044] The radiator 109 is connected with symmetrically-distributed handles 111.

[0045] The above examples are made by the utility model, but not limit the implementation mode. For the ordinary skilled in the art, on the basis of the above description, other different forms of changes or changes can be made, here, all the implementation modes need not and cannot be exhausted, and the obvious changes or changes derived therefrom are still within the protection scope of the utility model.

Claims

1. A ready-to-install power unit integrated module, characterized in that: The main power PCB (106) is connected to a membrane capacitor pool (101), a driving board (102), an IGBT module (107), and a PWM wave access port (108); the IGBT module (107) and the PWM wave access port (108) are electrically connected to the driving board (102), respectively. The main power PCB board (106) is connected to a fixing bracket (103), a fan (104) and a heat sink (109) are connected inside the fixing bracket (103), the heat sink (109) is connected to the IGBT module (107) via a heat-conducting copper bar (110), and the fan (104) is electrically connected to the main power PCB board (106).

2. The ready-to-install power unit integrated module according to claim 1, characterized in that: The fixing bracket (103) is made of stainless steel.

3. The ready-to-install power unit integrated module according to claim 2, characterized in that: The fixing bracket (103) is connected to a filter (105) corresponding to the fan (104).

4. The ready-to-install power unit integrated module according to claim 1, characterized in that: The air outlet of the fan (104) corresponds to the heat dissipation end of the radiator (109).

5. The ready-to-install power unit integrated module according to claim 4, characterized in that: The fan (104) is electrically connected to the PWM wave access port (108).

6. The ready-to-install power unit integrated module according to claim 1, characterized in that: The radiator (109) is connected to symmetrically distributed handles (111).

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