CN220421674U - Reversing module capable of changing polarity of rectification output and power supply - Google Patents
Reversing module capable of changing polarity of rectification output and power supply Download PDFInfo
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- CN220421674U CN220421674U CN202321949466.7U CN202321949466U CN220421674U CN 220421674 U CN220421674 U CN 220421674U CN 202321949466 U CN202321949466 U CN 202321949466U CN 220421674 U CN220421674 U CN 220421674U
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- 238000003466 welding Methods 0.000 abstract description 2
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- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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Abstract
The utility model discloses a reversing module capable of changing the polarity of rectification output and a power supply, comprising a module main body, wherein the module main body is provided with two input electrodes, two groups of control electrodes and two integrated units; each integrated unit comprises a group of a plurality of MOS tubes connected in parallel and two groups of a plurality of Schottky diodes connected in parallel; each integrated unit is correspondingly connected with a group of control electrodes, and each integrated unit is connected with a corresponding input electrode and comprises a positive voltage output integrated unit and a negative voltage output integrated unit. The circuit characteristics determine that the reversing module has high reliability and high integration level, and can be produced in a large scale. In addition, the utility model adopts wafers to directly form a module through welding and bonding, and does not adopt the packaged mos tube and the schottky diode to carry out secondary packaging, thereby having the advantages of small contact resistance, small stray inductance, small capacitance, strong anti-interference capability and good heat dissipation effect.
Description
Technical Field
The utility model relates to the field of switching power supplies, in particular to a reversing module capable of changing the polarity of rectification output and a power supply.
Background
At present, two reversing modes exist for power supply reversing: mechanical commutation and electronic commutation. Wherein the mechanical commutation includes relay commutation and commutator commutation. The electronic commutation includes: 1. the mos tube is used as a reversing switch, and an electronic switch is formed by connecting a source electrode and a source electrode in series, or an electronic switch is formed by connecting a drain electrode and a drain electrode in series. 2. The H bridge commutates.
The common mode is H bridge commutation, and the commutation is realized by controlling the H bridge diagonal switching tube.
However, the applicant has found that in practical application of the power commutation product, there are problems of reliability deviation and difficult assembly and high cost at high current.
Disclosure of Invention
In order to overcome the technical defects, the utility model provides a reversing module capable of changing the polarity of the rectification output and a power supply.
In order to solve the problems, the utility model is realized according to the following technical scheme:
in a first aspect, the present utility model provides a commutation module capable of changing polarity of a commutating output, including a module body, the module body being provided with two input electrodes, two sets of control electrodes, and two integrated units;
each integrated unit comprises a group of a plurality of MOS tubes connected in parallel and two groups of a plurality of Schottky diodes connected in parallel;
each integrated unit is correspondingly connected with a group of control electrodes, and each integrated unit is connected with a corresponding input electrode;
the integrated unit comprises a positive voltage output integrated unit and a negative voltage output integrated unit.
Preferably, in the positive voltage output integrated unit, anodes of the schottky diodes of each group are respectively connected with the input electrode, cathodes of the schottky diodes are connected with drain electrodes of the MOS transistors,
the source electrode of the MOS tube outputs positive voltage through the bottom plate.
Preferably, in the negative voltage output integrated unit, the cathode of each group of schottky diodes is respectively connected with the input electrode, the anodes of the schottky diodes are all connected with the source electrode of the MOS transistor,
the drain electrode of the MOS tube outputs negative voltage through the bottom plate.
Preferably, the grid electrode of the MOS tube is connected with a resistor, and the resistor is used for conducting all the MOS tubes simultaneously.
Preferably, each integrated unit includes a group of 2 MOS transistors and two groups of 4 schottky diodes.
Preferably, the module body includes:
a bottom plate;
a housing connected to the base plate;
a DBC board connected to the chassis;
the integrated unit is connected to the bottom plate and is positioned in the accommodating space of the shell; the two input electrodes and the two groups of control electrodes are respectively penetrated through the shell and exposed on the shell.
Preferably, the module body includes:
the two input electrodes, the two groups of control electrodes and the two integrated units are respectively connected with the DBC plate through bonding wires, so that the integrated units are respectively conducted with the two input electrodes and the two groups of control electrodes.
Preferably, the housing has a first end and a second end along its length, the first and second ends being provided with a connection structure, respectively, for mounting the commutation module on an external carrier.
In another aspect, the present utility model further provides a commutating power supply, including the commutating module of the first aspect, where the polarity of the output commutation can be changed.
Compared with the prior art, the utility model has the beneficial effects that: the utility model relates to a reversing module for changing rectification output polarity, which comprises two integrated units, namely a positive voltage output integrated unit and a negative voltage output integrated unit, which are respectively formed by a plurality of MOS (metal oxide semiconductor) tubes and Schottky diodes and are used for controlling the output polarity of a rectification circuit. The circuit characteristics determine that the reversing module has high reliability and high integration level, and can be produced in a large scale. In addition, the utility model adopts wafers to directly form a module through welding and bonding, and does not adopt the packaged mos tube and the schottky diode to carry out secondary packaging, thereby having the advantages of small contact resistance, small stray inductance, small capacitance, strong anti-interference capability and good heat dissipation effect. The utility model saves a large number of connecting copper plates and accessories, greatly reduces the installation space, is convenient to use and maintain, and reduces the cost.
Drawings
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is an electrical schematic diagram of an electronic switch formed by MOS transistor source to source;
FIG. 2 is an electrical schematic diagram of an electronic switch formed by MOS transistor drain to drain;
FIG. 3 is an electrical schematic diagram of H-bridge commutation;
FIG. 4 is an electrical schematic of the integrated unit of the present utility model;
FIG. 5 is an illustration of the body of a commutation module of the present utility model with a polarity of the commutated output changed;
FIG. 6 is a schematic side view of a commutation module for changing polarity of a commutated output according to the present utility model;
FIG. 7 is a schematic top view of a commutation module with polarity of the commutating output changed according to the present utility model;
in the figure: a 1-schottky diode; a 2-mos tube; a 3-resistor; 4-a control electrode; 5-an input electrode; 6-DBC plate; 7-a bottom plate; 8-bonding wires; 9-a housing; 10-side buckles.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
At present, two reversing modes exist for power supply reversing: mechanical commutation and electronic commutation.
Wherein the mechanical commutation includes relay commutation and commutator commutation. And (3) reversing a relay: the volume is larger, the speed is low, and the mechanical damage is caused. Reversing by a reverser: the volume is larger, the speed is slow, and the contact interface needs to be corrected regularly.
The electronic commutation includes: 1. the mos tube is used as a reversing switch, and an electronic switch is formed by connecting a source electrode and a source electrode in series, or an electronic switch is formed by connecting a drain electrode and a drain electrode in series, as shown in fig. 1 and 2, and fig. 1 and 2 are electrical schematic diagrams of the electronic switch. The working modes are divided into two types: 1. one group of mos tubes is opened, and one group of mos tubes works in a diode state, so that the mos tubes are serious in heating, poor in dynamic performance and easy to burn out. 2. One group of mos transistors is opened, and the other group of mos transistors is in a synchronous rectification state, so that the control is complex, and the reliability is not high.
2. H-bridge commutation (as shown in fig. 3). This is currently the most common commutation method. The H bridge diagonal switching tube is controlled to realize commutation, but the defect is high cost, reliability deviation under high current, complex structure and difficult assembly.
As shown in fig. 4 to 7, a preferred structure of the commutation module capable of changing the polarity of the commutated output according to the present utility model is shown.
Referring to fig. 4-7, the present utility model provides a technical solution:
a reversing module capable of changing rectification output polarity comprises a module main body, wherein the module main body is provided with two input electrodes, two groups of control electrodes and two integrated units.
Each integrated unit comprises a group of a plurality of MOS tubes connected in parallel and two groups of a plurality of Schottky diodes connected in parallel.
Each integrated unit is correspondingly connected with a group of control electrodes, and each integrated unit is connected with a corresponding input electrode.
The integrated unit comprises a positive voltage output integrated unit and a negative voltage output integrated unit.
As shown in fig. 7, the commutation module includes a module body including two input electrodes 5, two sets of control electrodes 4, and two integrated units. Each integrated unit is connected to a corresponding set of control electrodes 4 and each integrated unit is connected to a corresponding input electrode 5. The integrated unit comprises a plurality of MOS tubes 2 connected in parallel and a plurality of Schottky diodes 1. The integrated units are divided into positive voltage output integrated units and negative voltage output integrated units.
Preferably, in the positive voltage output integrated unit, anodes of the schottky diodes of each group are respectively connected with an input electrode, cathodes of the schottky diodes are connected with drains of the MOS transistors, and sources of the MOS transistors output positive voltage through the bottom plate.
As shown in fig. 7, in the positive voltage output integrated unit in the integrated unit, the anode of the schottky diode 1 is connected to the input electrode 5, and the cathodes of the schottky diode 1 are all connected to the drain of the MOS transistor 2.
Illustratively, as shown in fig. 4, the positive voltage output integrated unit is composed of two groups of schottky diodes and one group of MOS transistors. In the positive voltage output integrated unit, anodes of the two groups of Schottky diodes are respectively connected to the input electrode, and cathodes of the two groups of Schottky diodes are connected with drain electrodes of the MOS transistors. At this time, the source electrode of the MOS tube outputs positive voltage through the bottom plate.
Preferably, in the negative voltage output integrated unit, cathodes of the schottky diodes of each group are respectively connected with an input electrode, anodes of the schottky diodes are connected with sources of the MOS transistors, and drains of the MOS transistors output negative voltage through the bottom plate.
As shown in fig. 7, in the negative voltage output integrated unit in the integrated unit, the cathode of the schottky diode 1 is connected to the input electrode 5, and the anode of the schottky diode 1 is connected to the source of the MOS transistor 2.
Illustratively, as shown in fig. 4, the negative voltage output integrated unit is composed of two schottky diodes and one MOS transistor. In the negative voltage output integrated unit, cathodes of the two groups of Schottky diodes are respectively connected to the input electrode, and anodes of the two groups of Schottky diodes are connected with sources of the MOS transistors. At this time, the drain electrode of the MOS tube outputs negative voltage through the bottom plate.
When the positive voltage is required to be output, the MOS tube in the positive voltage output integrated unit is controlled to be conducted through the positive group control electrode (the control electrode connected with the positive voltage output integrated unit). And controlling the MOS tube in the negative voltage output integrated unit to cut off through the negative group control electrode, and outputting positive voltage from the bottom plate.
When the negative voltage needs to be output, the MOS tube in the negative voltage output integrated unit is controlled to be conducted through the negative group control electrode (the control electrode connected with the negative voltage output integrated unit), and the MOS tube in the positive voltage output integrated unit is controlled to be cut off through the positive group control electrode, so that the negative voltage is output from the bottom plate.
Preferably, the grid electrode of the MOS tube is connected with a resistor, and the resistor is used for conducting all groups of MOS tubes simultaneously.
As shown in fig. 4 and fig. 7, the gate of the MOS transistor 2 in the integrated unit of the reversing module is connected to a resistor 3, which is used to turn on each MOS transistor simultaneously.
Preferably, each integrated unit comprises a group of 2 MOS transistors and two groups of 4 schottky diodes.
As shown in fig. 7, two integrated units (a positive voltage output integrated unit and a negative voltage output integrated unit) of the commutation module include a MOS transistor 2 and a schottky diode 1. Specifically, each integrated unit includes 2 MOS transistors 2 and 4 schottky diodes 1. The two integrated units comprise 4 MOS transistors 2 and 8 Schottky diodes 1. Correspondingly, each MOS tube 2 is connected with one resistor, and the reversing module comprises 4 resistors.
The commutation module of the utility model is composed of two groups of mos tubes (each group of mos tubes is formed by connecting a plurality of mos tubes in parallel into a large current mos tube) and a Schottky diode, and is used for controlling the output polarity of the rectification circuit.
Preferably, the module body includes: a bottom plate; the shell is connected to the bottom plate; a DBC board connected to the base plate; the integrated unit is connected to the bottom plate and is positioned in the accommodating space of the shell; the two input electrodes and the two groups of control electrodes are respectively penetrated through the shell and exposed on the shell.
Preferably, the module body includes: the two input electrodes, the two groups of control electrodes and the two integrated units are respectively connected with the DBC plate through bonding wires, so that the conduction between the integrated units and the two input electrodes and the two groups of control electrodes is realized.
Preferably, the housing has a first end and a second end along its length, the first end and the second end being provided with a connection structure, respectively, for mounting the commutation module on an external carrier.
Specifically, as shown in fig. 6 and 7, a DBC board is welded on a base board, and a mos wafer, a schottky wafer, a resistor, an output electrode and a control electrode are arranged on the DBC board, and are connected with the DBC board through bonding wires, then a shell is installed, silicone gel is filled and sealed, and the electrodes are bent, so that the commutating power supply product is finally formed. The body diagram of the reversing power supply product is shown in fig. 5.
The utility model relates to a reversing module capable of changing the polarity of rectification output, which comprises the following working principles: the commutation module is composed of two groups of mos tubes (each group of mos tubes is formed by connecting a plurality of mos tubes in parallel to form a large current mos tube) and a Schottky diode and is used for controlling the output polarity of the rectification circuit.
The above is only a preferred embodiment of the present utility model, and is not limited in any way, so any modification, equivalent variation and modification made to the above embodiment according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (9)
1. The reversing module capable of changing the polarity of the rectification output is characterized by comprising a module main body, wherein the module main body is provided with two input electrodes, two groups of control electrodes and two integrated units;
each integrated unit comprises a group of a plurality of MOS tubes connected in parallel and two groups of a plurality of Schottky diodes connected in parallel;
each integrated unit is correspondingly connected with a group of control electrodes, and each integrated unit is connected with a corresponding input electrode;
the integrated unit comprises a positive voltage output integrated unit and a negative voltage output integrated unit.
2. A commutation module capable of changing polarity of a commutated output as recited in claim 1, wherein,
in the positive voltage output integrated unit, the anodes of the Schottky diodes of each group are respectively connected with the input electrode, the cathodes of the Schottky diodes are connected with the drain electrode of the MOS tube,
the source electrode of the MOS tube outputs positive voltage through the bottom plate.
3. A commutation module capable of changing polarity of a commutated output as recited in claim 1, wherein,
in the negative voltage output integrated unit, the cathode of each group of Schottky diodes is respectively connected with the input electrode, the anodes of the Schottky diodes are connected with the source electrode of the MOS tube,
the drain electrode of the MOS tube outputs negative voltage through the bottom plate.
4. A commutation module capable of changing polarity of a commutated output as recited in claim 1, wherein,
the grid electrode of the MOS tube is connected with a resistor, and the resistor is used for enabling all groups of MOS tubes to be conducted simultaneously.
5. A commutation module capable of changing polarity of a commutated output as recited in claim 1, wherein,
each integrated unit comprises a group of 2 MOS transistors and two groups of 4 Schottky diodes.
6. A commutation module for altering the polarity of a commutated output as in claim 1, wherein the module body comprises:
a bottom plate;
a housing connected to the base plate;
a DBC board connected to the chassis;
the integrated unit is connected to the bottom plate and is positioned in the accommodating space of the shell; the two input electrodes and the two groups of control electrodes are respectively penetrated through the shell and exposed on the shell.
7. The commutation module of claim 6, wherein the module body comprises:
the two input electrodes, the two groups of control electrodes and the two integrated units are respectively connected with the DBC plate through bonding wires, so that the integrated units are respectively conducted with the two input electrodes and the two groups of control electrodes.
8. The commutation module of claim 6, wherein the module body comprises:
the shell is provided with a first end and a second end along the length direction of the shell, the first end and the second end are respectively provided with a connecting structure, and the connecting structures are used for installing the reversing module on an external carrier.
9. A commutating power supply comprising a commutating module according to any one of claims 1 to 8, wherein the polarity of the commutating output is changeable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321949466.7U CN220421674U (en) | 2023-07-24 | 2023-07-24 | Reversing module capable of changing polarity of rectification output and power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321949466.7U CN220421674U (en) | 2023-07-24 | 2023-07-24 | Reversing module capable of changing polarity of rectification output and power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220421674U true CN220421674U (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321949466.7U Active CN220421674U (en) | 2023-07-24 | 2023-07-24 | Reversing module capable of changing polarity of rectification output and power supply |
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| Country | Link |
|---|---|
| CN (1) | CN220421674U (en) |
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- 2023-07-24 CN CN202321949466.7U patent/CN220421674U/en active Active
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