CN212622989U - Power supply internal test circuit with high-voltage and low-voltage separation, step-by-step and block - Google Patents
Power supply internal test circuit with high-voltage and low-voltage separation, step-by-step and block Download PDFInfo
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- CN212622989U CN212622989U CN202020466170.XU CN202020466170U CN212622989U CN 212622989 U CN212622989 U CN 212622989U CN 202020466170 U CN202020466170 U CN 202020466170U CN 212622989 U CN212622989 U CN 212622989U
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Abstract
The utility model discloses a high-low pressure separation, substep, the power internal test circuit of piecemeal, including filtering rectifier module, power factor correction module, power conversion module, control and drive module, output rectifier module and protection module, filtering rectifier module connects power factor correction module, power factor correction module connects power conversion module and control and drive module, output rectifier module connects protection module, and this kind of high-low pressure separation, substep, the power internal test circuit of piecemeal can carry out electrical test to power inside, and the test is convenient nimble, because the probe is arranged independently, so can realize multi-functionally, the piecemeal test, greatly reduced product defective rate, loss reduction.
Description
Technical Field
The utility model relates to a LED drive power supply technical field specifically is a power internal test circuit of high-low pressure separation, substep, piecemeal.
Background
The general LED switch power supply is a network voltage input, and the inside of the LED switch power supply is a circuit with high-low voltage isolation and two isolated circuits with a primary side and a secondary side which are not in common with each other. Therefore, the internal tests must be tested separately, and the same test instrument cannot simultaneously test the primary side and the secondary side unless an isolation instrument, such as an isolation stylus of an oscilloscope, is added. The traditional power supply starting test only tests the input and output ends of the power supply, and if the interior of the power supply needs to be tested, a special tool is needed to lead out each electrical function point in the interior of the power supply; after the extraction, the extracted function points need to be classified and tested step by step; otherwise, the test is not only inaccurate and slow, but also may cause power failure.
The power supply is internally composed of various functional modules which are mutually connected, and if the power supply is subjected to modular test, the power supply test is clearer, more stable and more flexible. Therefore, a power supply internal test circuit with high-voltage and low-voltage separation, step-by-step and block is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a power internal test circuit of high-low pressure separation, substep, piecemeal to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a high-low voltage separation, step by step, power supply internal test circuit of piecemeal, its characterized in that: the power factor correction device comprises a filtering rectification module, a power factor correction module, a power conversion module, a control and drive module, an output rectification module and a protection module, wherein the input end of the filtering rectification module is connected with a power grid, the filtering rectification module is connected with the power factor correction module, the power factor correction module is connected with the power conversion module and the control and drive module, and the output rectification module is connected with the protection module; the output rectifying module and the protection module are positioned on the secondary side, and the filtering rectifying module, the power factor correcting module, the power conversion module and the control and drive module are positioned on the primary side;
preferably: the filter rectification module, the power factor correction module, the power conversion module and the control and drive module which are positioned on the primary side and the output rectification module and the protection module which are positioned on the secondary side are separately isolated and tested by adopting two different devices which are not on the same ground, and during the block testing, the auxiliary power supply is utilized for testing, and the relay action is used for isolating among all block testing circuits.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses can carry out the electrical test to power inside, the test is convenient nimble, because the probe is arranged independently, so can realize multi-functionally, the test of piecemeal, greatly reduced product defective rate reduces the loss.
Drawings
FIG. 1 is a block diagram of the overall functional modules of the present invention;
fig. 2 is a circuit diagram of the test of the control and drive module and the power conversion module according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a power supply internal test circuit with high-voltage and low-voltage separation, step-by-step and block comprises a filtering rectification module, a power factor correction module, a power conversion module, a control and drive module, an output rectification module and a protection module, wherein the filtering rectification module is connected with the power factor correction module, the power factor correction module is connected with the power conversion module and the control and drive module, and the output rectification module is connected with the protection module.
The output rectifying module and the protection module belong to a secondary side, and other modules belong to a primary side.
The primary side and the secondary side of the LED switch power supply are separately tested during testing, two different devices which are not in common with the ground are used for testing respectively, the auxiliary power supply is used for testing during block testing, and the relay action is used for isolating each block testing circuit.
As shown in fig. 2: a test schematic of the control and drive module test and power conversion module.
1. When the control and drive module is used for testing, the control and drive module is independently connected with an external auxiliary power supply, and the voltage of a power grid cannot be connected at the moment;
2. when the power conversion module is used for testing, the voltage of a power grid is accessed, and at the moment, an external auxiliary circuit is required to be closed;
3. the test control and drive module comprises the following steps:
a: the S2 switch is set to be 1, the relay K1 is powered on, the S2 switch and the S3 switch are set to be 2, the external auxiliary power supply is switched on to the S4 switch, and the S5 switch is ready;
b, the relay K2 is not electrified, the relay K1 is interlocked with the relay K2, S6 and S7 are set to be 1, and the power grid voltage is disconnected;
c, during testing, a button switch N1 is pressed, a relay K3 is electrified, an S4 switch and an S5 switch are set to be 2, and an external auxiliary power supply is connected to 12V + and 12V-in the power supply through a probe;
and D, the power control and driving module to be tested is powered on and starts working, and at the moment, whether the driving waveform is normal is tested through the probe.
And E, after the button switch N1 is released, the external auxiliary power supply is disconnected, and the power supply control and driving module stops working.
4. The power conversion module testing steps are as follows:
a, after testing other functional modules to be normal, setting the S1 switch to 2, powering off the relay K1, setting the S2 switch and the S3 switch to 1, and disconnecting the external auxiliary power supply;
b, electrifying the relay K2, setting S6 and S7 to be 2, connecting the grid voltage to S8, and preparing S9;
c, after a button N2 is pressed, the electric appliance K4 is powered on, S8 and S9 are set to 2, the power grid voltage is connected to a power supply, the power conversion circuit works, and at the moment, the probe tests waveforms of related devices of the power converter;
d: when the button N2 is released, the grid voltage is disconnected and the power converter stops operating.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A high-low voltage separation, step by step, power supply internal test circuit of piecemeal, its characterized in that: the power factor correction device comprises a filtering rectification module, a power factor correction module, a power conversion module, a control and drive module, an output rectification module and a protection module, wherein the input end of the filtering rectification module is connected with a power grid, the filtering rectification module is connected with the power factor correction module, the power factor correction module is connected with the power conversion module and the control and drive module, and the output rectification module is connected with the protection module; the output rectifying module and the protection module are positioned on the secondary side, and the filtering rectifying module, the power factor correcting module, the power conversion module and the control and drive module are positioned on the primary side.
2. The high-low voltage split, step-by-step, block power supply internal test circuit of claim 1, wherein: the filter rectification module, the power factor correction module, the power conversion module and the control and drive module which are positioned on the primary side and the output rectification module and the protection module which are positioned on the secondary side are separately isolated and tested by adopting two different devices which are not on the same ground, and during the block testing, the auxiliary power supply is utilized for testing, and the relay action is used for isolating among all block testing circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466170.XU CN212622989U (en) | 2020-04-02 | 2020-04-02 | Power supply internal test circuit with high-voltage and low-voltage separation, step-by-step and block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466170.XU CN212622989U (en) | 2020-04-02 | 2020-04-02 | Power supply internal test circuit with high-voltage and low-voltage separation, step-by-step and block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212622989U true CN212622989U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020466170.XU Active CN212622989U (en) | 2020-04-02 | 2020-04-02 | Power supply internal test circuit with high-voltage and low-voltage separation, step-by-step and block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212622989U (en) |
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2020
- 2020-04-02 CN CN202020466170.XU patent/CN212622989U/en active Active
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Address after: 311199, 7th Floor, Building 1, No. 587 Kangxin Road, Linping Street, Linping District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Zhongxinli Intelligent Equipment Co.,Ltd. Address before: 5 / F, building 2, 650 WangMei Road, Linping street, Yuhang District, Hangzhou City, Zhejiang Province 311100 Patentee before: HANGZHOU ZHONGXINLI TECHNOLOGY CO.,LTD. |
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