Multifunctional integrated electric energy conversion module

Abstract

The utility model discloses a multifunctional integrated electric energy conversion module, relates to the field of electric energy conversion modules, and aims to solve the problem that diversified electric energy conversion requirements are inconvenient to meet in the prior art. The circuit connection in the module is controlled through the switch, the conversion of the electric energy forms of AC-AC, DC-AC, DC-DC and AC-DC can be completed by using the basic circuit, and the main realization mode is that the basic circuit in the module is adjusted through the switch; and then the input voltage or current is converted into the required electric energy form through the basic circuit, and the output value of the voltage or current can be limited in a small range near a set value through the PWM modulation technology. The problem that an existing electric energy conversion module is difficult to flexibly control the electric energy conversion form and the problem that the utilization rate of the existing electric energy conversion module is not ideal are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy conversion modules, in particular to a multifunctional integrated electric energy conversion module. Background Art

[0002] A significant problem in the current design and manufacturing process for power conversion modules is that the functionality of each module is fixed. Adjusting or adding new circuit functions often requires a tedious re-boarding process. This involves a complex process, such as adjusting the number of pins, redesigning the pin layout, and changing the pin spacing. Since different circuit functions may require different pin packages, existing design methods often lack the flexibility to adapt to these changes, resulting in inefficient utilization and unnecessary waste of power conversion module resources. Therefore, when different power conversion requirements arise, the only option is to completely redesign and manufacture the entire circuit board or configure multiple power conversion modules with different functions. This redesign and manufacturing process is not only time-consuming and labor-intensive, but also significantly increases costs, making it particularly difficult to quickly respond to market demands. This is especially true in application areas with rapid technological evolution. Configuring multiple power conversion modules with different functions is not only costly but also consumes a large amount of space. To address this issue, it is particularly important to explore more flexible, simple, and easy-to-operate power conversion modules with multiple power conversion functions. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a multifunctional integrated electric energy conversion module, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, the present invention discloses a multifunctional integrated power conversion module, which adopts a technical solution comprising a first connector P1 and a second connector P2, wherein the first connector P1 is connected to multiple PWM circuits, and the second connector P2 is connected to multiple start and stop circuits; and further comprising a PWM control circuit and an AC output voltage for driving MOS transistors. The PWM control circuits for driving MOS transistors are multiple, including a PWM control circuit for a first driving MOS transistor and a PWM control circuit for a second driving MOS transistor. The front end of the PWM control circuit of the first driving MOS transistor is connected to a voltage input and a key switch U2, and the back end is connected to a key switch U1. The key switch U1 is connected to the PWM control circuit, output end, and PWM control circuits of the other driving MOS transistors; the AC output voltage is connected to one switching end of a sliding switch, the other switching end of the sliding switch is grounded, and the common end thereof is connected to the back end of the PWM control circuit of the second driving MOS transistor. The on-off connection state can be changed by operating the key switches U1 and U2, and the input direction of the AC output voltage can be changed by toggling the sliding switch.

[0005] As a preferred technical solution of the present invention, the MOS tube in the PWM control circuit driving the MOS tube is an N-channel MOS tube, whose G pole is connected to a PWM line and the S pole is connected to the common end of the slide switch.

[0006] As a preferred technical solution of the present utility model, the PWM control circuit of the first driving MOS transistor includes a MOS transistor Q1, and the MOS transistor Q1 is connected in parallel with a resistor R1, a capacitor C1, and a diode D1, wherein the resistor R1 and the capacitor C1 are connected in series, and the diode D1 is connected in parallel with the resistor R1 and the capacitor C1. A resistor R7 is connected between the G pole and the S pole of the MOS transistor Q1; the D pole and the S pole of the MOS transistor Q1 are respectively connected to a start circuit Q1A and a stop circuit Q1B, which are reserved drive signal interfaces for facilitating access to drive signals; and the G pole of the MOS transistor Q1 is connected to the PWM1 circuit.

[0007] As a preferred technical solution of the present invention, there are six groups of PWM control circuits for the driving MOS tubes. The front end of the PWM control circuit of the first driving MOS tube is a voltage input point vin1, and the front end of the PWM control circuit of the third driving MOS tube is a voltage input point vin2. The front end of the PWM control circuit of the first driving MOS tube is connected to the 4# port of the key switch U2, and the front end of the PWM control circuit of the third driving MOS tube is connected to the 1# port of the key switch U2. The front ends of the PWM control circuits of the first driving MOS tube and the second driving MOS tube are also connected via a rocker switch SW3. The 2# port of the key switch U2 and the 2# port of the key switch U1 are connected to the V phase OUTV at the output end and the front end of the PWM control circuit of the fourth driving MOS tube; the 3# port and the 6# port of the key switch U2 are vacant; and the S pole of the PWM control circuit of the first driving MOS tube is connected to the U phase OUTU at the input end.

[0008] As a preferred technical solution of the present invention, the 4# port of the push switch U1 is connected to the back end of the PWM control circuit of the first driving MOS tube, the 1# port is connected to the back end of the PWM control circuit of the third driving MOS tube; the 5# port is connected to the front end of the PWM control circuit of the second driving MOS tube; the 3# port and the 6# port are vacant.

[0009] As a preferred technical solution of the present invention, the rear end of the PWM control circuit of the second driving MOS tube and the rear end of the PWM control circuit of the third driving MOS tube are both connected to the AC output voltage AC-AC-1, and the sliding switch SW1 is connected between the rear end of the PWM control circuit of the second driving MOS tube and the AC output voltage AC-AC-1.

[0010] As a preferred technical solution of the present invention, the rear end of the PWM control circuit of the fourth driving MOS tube is connected to the common end of the slide switch SW2, and one of its two switching ends is connected to the AC output voltage AC-AC-2, and the other is grounded.

[0011] As a preferred technical solution of the present invention, it also includes a PWM control circuit of a fifth driving MOS tube, whose front end is a voltage input point vin3. The front end of the PWM control circuit of the third driving MOS tube and the front end of the PWM control circuit of the fifth driving MOS tube are connected via a rocker switch SW4. The rear end of the PWM control circuit of the fifth driving MOS tube is connected to the W phase OUTW of the output end and the front end of the PWM control circuit of the sixth driving MOS tube. The rear end of the PWM control circuit of the sixth driving MOS tube is grounded.

[0012] As a preferred technical solution of the present invention, the output terminal U-phase OUTU is connected to a fuse FH1 and a polarized capacitor U3, which is then grounded. A non-polarized capacitor C9 is also connected in parallel to the polarized capacitor U3. The S-pole of the MOS transistor Q1 is connected between the front ends of the polarized capacitor U3 and the non-polarized capacitor C9. The fuse provides overload protection for the circuit.

[0013] As a preferred technical solution of the present invention, the voltage input VIN is connected to fuse FH2, polarized capacitor U4, and then grounded. Polarized capacitor U4 is also connected in parallel with non-polarized capacitor C8. The front end of polarized capacitor U4 and the front end of non-polarized capacitor C8 are connected to one of voltage input points Vin1, Vin2, or Vin3. The fuse provides overload protection for the circuit.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention uses a sliding switch, a push button switch, and a rocker switch to connect the PWM control circuits of six groups of driving MOS tubes, as well as three groups of input voltages and two AC output voltages. By operating the sliding switch, the push button switch, and the rocker switch, the on-off state and connection relationship of the PWM control circuits of the six groups of driving MOS tubes can be changed, thereby realizing the BOOST boost function, the BUCK buck function, the DC-AC inverter function, the AC-AC boost chopping function, and the AC-DC full-controlled rectification function. The internal connection mode of the module can be controlled by operating the switch as required, thereby configuring the function to be used. The present invention has a simple structure, low cost, is easy to use, and has low power consumption, and can achieve the purpose of having multiple power conversion functions in one module. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a partial circuit schematic diagram of the utility model;

[0016] Figure 2 This is the principle diagram of the fuse connection circuit at the voltage input of the utility model;

[0017] Figure 3 This is the schematic diagram of the output end fuse connection circuit of the utility model;

[0018] Figure 4 This is the principle diagram of the PWM circuit cluster circuit of the utility model;

[0019] Figure 5 This is the principle diagram of the MOS tube independent drive interface cluster circuit of the utility model;

[0020] Figure 6 This is the operational flow chart of the utility model;

[0021] Figure 7This is a simulation result diagram of the AC-AC boost chopper circuit of the utility model;

[0022] Figure 8 This is a schematic diagram of the DC step-down circuit built under the DC-DC function of the utility model;

[0023] Figure 9 This is the schematic diagram of the DC boost circuit built under the DC-DC function of this utility model. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figure 1 As shown, the utility model discloses a multifunctional integrated electric energy conversion module, which adopts a technical solution including six groups of PWM control circuits for driving MOS tubes. The six groups of PWM control circuits for driving MOS tubes have the same structure, namely, a PWM control circuit for a first driving MOS tube, a PWM control circuit for a second driving MOS tube, a PWM control circuit for a third driving MOS tube, a PWM control circuit for a fourth driving MOS tube, a PWM control circuit for a fifth driving MOS tube, and a PWM control circuit for a sixth driving MOS tube.

[0027] Taking the PWM control circuit of the first driver MOS transistor as an example, the PWM control circuit includes a MOS transistor Q1. MOS transistor Q1 is a 2N7002 N-channel MOS transistor. Its G pole is connected to the PWM1 circuit, a resistor R7 is connected between the S and G poles, a resistor R1 and a capacitor C1 are connected in series between the S and D poles, and a diode D1 is connected in parallel with the resistor R1 and capacitor C1. To leave an interface for the drive signal of MOS transistor Q1 to input the drive signal and adjust the drive phase, a start circuit Q1A is connected to the D pole of MOS transistor Q1, and a stop circuit Q1B is connected to the S pole.

[0028] In the subsequent description, for the sake of convenience, in the PWM control circuit that drives the MOS tube, the end close to the D pole of the MOS tube is called the front end, and the end close to the S pole is called the back end.

[0029] The front end of the PWM control circuit of the first driving MOS tube is a voltage input point vin1, and the front end of the PWM control circuit of the first driving MOS tube is connected to the 4# port of the key switch U2, and the back end is connected to the 4# port of the key switch U1. The 5# ports of the key switch U1 and the key switch U2 are both connected to the front end of the PWM control circuit of the second driving MOS tube. The back end of the PWM control circuit of the second driving MOS tube is connected to the common (2#) terminal of the slide switch SW1. The switch (1#) terminal of the slide switch SW1 is grounded, and the switch terminal (3#) is connected to the AC output voltage AC-AC-1. The AC output voltage AC-AC-1 is also connected to the back end of the PWM control circuit of the third driving MOS tube. The front end of the PWM control circuit of the third driving MOS tube has a voltage input point vin2 and is connected to the 1# port of the key switch U2. The front end of the PWM control circuit of the first driving MOS tube and the front end of the PWM control circuit of the third driving MOS tube are also connected via the rocker switch SW3. The back end of the PWM control circuit of the third driving MOS tube is also connected to the 1# port of the key switch U1.

[0030] The 2# ports of the push switch U1 and the push switch U2 are both connected to the front end of the PWM control circuit of the fourth driving MOS tube and the V phase OUTV of the output end, and the 3# ports and 6# ports of the two push switches are both vacant.

[0031] The rear end of the PWM control circuit of the fourth driving MOS tube is connected to the common (2#) terminal of the slide switch SW2, the switch (1#) terminal is grounded, and the switch (3#) terminal is connected to the AC output voltage AC-AC-2.

[0032] The front end of the PWM control circuit of the fifth driving MOS tube is the voltage input point vin3. The front end of the PWM control circuit of the fifth driving MOS tube and the front end of the PWM control circuit of the third driving MOS tube are connected through the rocker switch SW4. The rear end of the PWM control circuit of the fifth driving MOS tube is connected to the W phase OUTW of the output end and the front end of the PWM control circuit of the sixth driving MOS tube. The rear end of the PWM control circuit of the sixth driving MOS tube is grounded.

[0033] To provide overload protection, such as Figure 2 As shown, the external voltage input VIN is connected to an FH1-200CK-G type fuse FH2, and the voltage input is connected to the EST026 terminal at the front end of the fuse FH2. The rear end of the fuse FH2 is connected to the polar capacitor U4 and then grounded. The polar capacitor U4 is also connected in parallel with the non-polar capacitor C8. The voltage input point vin1 is connected between the front end of the polar capacitor U4 and the front end of the non-polar capacitor C8; as shown Figure 3As shown, the output end OUTU is connected to the EST026 terminal at the front end of the FH1-200CK-G type fuse FH1. The fuse FH1 is connected to the polar capacitor U3 and then grounded. The polar capacitor U3 is also connected in parallel with the non-polar capacitor C9. The front ends of the polar capacitor U3 and the non-polar capacitor C9 are connected to the S pole of the MOS tube Q1.

[0034] like Figure 4 As shown, the connected PWM circuits of the six groups of PWM control circuits driving MOS tubes are clustered on the HDR-IDC-2.54-2X5P type connector P1; Figure 5 As shown, the independent drive interfaces of the MOS tubes of the PWM control circuits of the six groups of driving MOS tubes are bundled on the PZ254V-12-20P connector H1.

[0035] The working principle of this utility model:

[0036] like Figure 6 As shown,

[0037] (1) Disconnect the push button switch U1, push button switch U2 and rocker switch SW3, and press Figure 8 、 Figure 9 The schematic diagram shown is used to build a BUCK or BOOST circuit to achieve the function of boosting or bucking.

[0038] The buck circuit operates by controlling the on / off switching of an electronic switch to achieve a voltage step-down function. When the switch is on, the input voltage charges the output capacitor through the inductor, simultaneously supplying power to the load. When the switch is off, the current in the inductor flows through the freewheeling diode, maintaining a stable output voltage.

[0039] The working principle of the BOOST circuit can be divided into two stages: the on-state and the off-state.

[0040] On-state: When the MOSFET is on, the input power forms a closed loop through the MOSFET and the inductor. The inductor stores energy during this phase and can boost the input voltage to a higher level. The current in the inductor increases linearly, storing energy.

[0041] Off-state: When the MOS transistor is turned off, the closed loop is broken. Due to the inductor's self-inductance, the current cannot change suddenly, and the inductor begins to release its stored energy. At this point, the current in the inductor forms a bypass loop through the diode, continuing to drive the current at the output. The current in the inductor begins to decrease, but due to the inductor's self-inductance, the voltage generated across it adds to the input voltage, causing the output voltage to be higher than the input voltage.

[0042] (2) Disconnect the push switch U2, close the rocker switch SW3, rocker switch SW4, push switch U1, and place the single poles of the slide switch SW1 and slide switch SW2 at port 1 to realize the H-bridge inverter function.

[0043] The working principle of the H-bridge inverter circuit is to invert the voltage of the DC power supply into AC voltage by controlling the on-off state of the four switching elements. The specific process is as follows:

[0044] When the MOS transistors Q1 and Q4 are turned on and the MOS transistors Q2 and Q3 are turned off, the current flows into the load through the MOS transistor Q1, and then flows out of the load and returns to the DC power supply through the MOS transistor Q4.

[0045] When MOS transistors Q2 and Q3 are turned on and MOS transistors Q1 and Q4 are turned off, the current directions are opposite. The current flows into the load through MOS transistor Q3, and then flows out of the load through MOS transistor Q2 and returns to the DC power supply.

[0046] Similar to the H-bridge inverter, during the full-bridge rectification process, the conversion from AC to DC can be achieved by controlling the on and off states of the four MOS tubes.

[0047] When the two MOS transistors in the upper arm are disconnected and the two MOS transistors in the lower arm are turned on, the input and output terminals of the circuit form a parallel circuit structure. At this time, current flows from the AC power supply through the circuit load, then through the on-resistance of the lower arm, and finally flows back to the AC power supply, thus achieving AC-DC rectification.

[0048] Voltage control: By adjusting the switching element's on-duty cycle (i.e., the ratio of the on-time to the total on-time), the voltage across the load can be controlled. For example, using PWM (pulse width modulation) technology, the load speed can be smoothly adjusted without changing the DC power supply voltage.

[0049] (3) Disconnect the rocker switch SW3, rocker switch SW4 and push switch U1, and connect the single poles of the slide switch SW1 and the slide switch SW2 to port 2 to build an AC-AC boost chopper circuit to achieve the AC-AC function. The simulation results of the AC-AC boost chopper circuit are shown in Figure 2. Figure 7 shown.

[0050] The circuits and mechanical connections involved in the present invention are conventional means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and they belong to common knowledge.

[0051] Components not described in detail herein are prior art.

[0052] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional integrated power conversion module, characterized by: The device includes a first connector P1 and a second connector P2, wherein the first connector P1 is connected to multiple PWM circuits, and the second connector P2 is connected to multiple start circuits and stop circuits; the device also includes a PWM control circuit and an AC output voltage for driving MOS tubes. The PWM control circuits for driving MOS tubes are multiple, including a PWM control circuit for a first driving MOS tube and a PWM control circuit for a second driving MOS tube. The front end of the PWM control circuit of the first driving MOS tube is connected to a voltage input and a key switch U2, and the rear end is connected to a key switch U1. The key switch U1 is connected to the PWM control circuit, output end, and PWM control circuits of the second driving MOS tube; the AC output voltage is connected to one switching end of a sliding switch, the other switching end of the sliding switch is grounded, and the common end thereof is connected to the rear end of the PWM control circuit of the second driving MOS tube.

2. The multifunctional integrated power conversion module according to claim 1, characterized in that: The MOS tube in the PWM control circuit driving the MOS tube is an N-channel MOS tube, a G-pole of which is connected to a PWM line, and an S-pole is connected to the common end of the slide switch.

3. The multifunctional integrated power conversion module according to claim 2, characterized in that: The PWM control circuit of the first driving MOS transistor includes a MOS transistor Q1. The MOS transistor Q1 is connected in parallel to a resistor R1, a capacitor C1, and a diode D1, wherein the resistor R1 and the capacitor C1 are connected in series, the diode D1 and the resistor R1 and the capacitor C1 are connected in parallel, and a resistor R7 is connected between the G pole and the S pole of the MOS transistor Q1; the D pole and the S pole of the MOS transistor Q1 are respectively connected to a start circuit Q1A and a stop circuit Q1B; and the G pole of the MOS transistor Q1 is connected to a PWM1 circuit.

4. The multifunctional integrated power conversion module according to claim 3, characterized in that: There are six groups of PWM control circuits for the driving MOS transistors. The front end of the PWM control circuit of the first driving MOS transistor is a voltage input point vin1, and the front end of the PWM control circuit of the third driving MOS transistor is a voltage input point vin2. The front end of the PWM control circuit of the first driving MOS transistor is connected to port 4 of the key switch U2, and the front end of the PWM control circuit of the third driving MOS transistor is connected to port 1 of the key switch U2. The front ends of the PWM control circuits of the first driving MOS transistor and the second driving MOS transistor are also connected via a rocker switch SW3. Port 5 of the key switch U2 is connected to the front end of the PWM control circuit of the second driving MOS transistor. Port 2 of the key switch U2 and port 2 of the key switch U1 are connected to the V-phase output terminal OUTV and the front end of the PWM control circuit of the fourth driving MOS transistor. Ports 3 and 6 of the key switch U2 are left vacant. The S pole of the PWM control circuit of the first driving MOS transistor is connected to the U-phase input terminal OUTU.

5. The multifunctional integrated power conversion module according to claim 4, characterized in that: The 4# port of the push switch U1 is connected to the back end of the PWM control circuit of the first driving MOS tube, the 1# port is connected to the back end of the PWM control circuit of the third driving MOS tube; the 5# port is connected to the front end of the PWM control circuit of the second driving MOS tube; the 3# port and the 6# port are vacant.

6. The multifunctional integrated power conversion module according to claim 4, characterized in that: The rear ends of the PWM control circuit of the second driving MOS tube and the rear ends of the PWM control circuit of the third driving MOS tube are both connected to the AC output voltage AC-AC-1, and the sliding switch SW1 is connected between the rear end of the PWM control circuit of the second driving MOS tube and the AC output voltage AC-AC-1.

7. The multifunctional integrated power conversion module according to claim 4, characterized in that: The rear end of the PWM control circuit of the fourth driving MOS tube is connected to the common end of the slide switch SW2, and one of its two switching ends is connected to the AC output voltage AC-AC-2, and the other is grounded.

8. The multifunctional integrated power conversion module according to claim 4, characterized in that: It also includes a PWM control circuit for a fifth driving MOS tube, whose front end is a voltage input point vin3. The front end of the PWM control circuit of the third driving MOS tube and the front end of the PWM control circuit of the fifth driving MOS tube are connected via a rocker switch SW4. The rear end of the PWM control circuit of the fifth driving MOS tube is connected to the W phase OUTW of the output end and the front end of the PWM control circuit of the sixth driving MOS tube. The rear end of the PWM control circuit of the sixth driving MOS tube is grounded.

9. The multifunctional integrated power conversion module according to claim 8, characterized in that: The U-phase OUTU of the output end is connected to the fuse FH1 and the polar capacitor U3 and then grounded. The polar capacitor U3 is also connected in parallel with the non-polar capacitor C9. The front end of the polar capacitor U3 and the front end of the non-polar capacitor C9 are connected to the S pole of the MOS tube Q1.

10. The multifunctional integrated power conversion module according to claim 8 or 9, characterized in that: The voltage input VIN is connected to the fuse FH2 and the polar capacitor U4 and then to ground. The polar capacitor U4 is also connected in parallel with the non-polar capacitor C8. The front end of the polar capacitor U4 and the front end of the non-polar capacitor C8 are connected between the voltage input point vin1, the voltage input point vin2, and the voltage input point vin3.

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