CN112748355A - Automatic power adapter energy efficiency test system - Google Patents
Automatic power adapter energy efficiency test system Download PDFInfo
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- CN112748355A CN112748355A CN202110183692.8A CN202110183692A CN112748355A CN 112748355 A CN112748355 A CN 112748355A CN 202110183692 A CN202110183692 A CN 202110183692A CN 112748355 A CN112748355 A CN 112748355A
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- power adapter
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- energy efficiency
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses an automatic energy efficiency testing system for a power adapter, which relates to the technical field of power adapter detection and solves the technical problem of low efficiency of the existing testing mode. The invention can realize the automatic energy efficiency test of load adjustment, parameter reading and result calculation, has the advantages of convenient operation, reliable data and high automation degree, and can greatly save the test time and the labor cost.
Description
Technical Field
The invention relates to the technical field of power adapter testing, in particular to an automatic energy efficiency testing system for a power adapter.
Background
The power adapter is a power supply conversion device for small portable electronic equipment and electronic appliances, has the advantages of high energy conversion efficiency, low power consumption, high universality, portability, exquisite appearance and the like, and is widely applied to security cameras, set top boxes, mobile phones, tablet computers, cameras, notebook computers and the like.
Energy efficiency is an important index of the power adapter, and is also a detection item frequently involved in all levels of government supervision and spot checks. When the energy efficiency test of the power adapter is carried out, preheating operation needs to be carried out firstly, and then the input active power and the output active power are tested under the condition of different output currents. The existing testing mode is testing and recording by workers, and because testing is required under different working conditions, the testing period is longer, more test data are recorded, and the testing working efficiency is low, so that the development of an automatic testing system for the energy efficiency of the power adapter is of great significance.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art, and aims to provide an automatic energy efficiency testing system for a power adapter, which can improve the measurement precision.
The technical scheme of the invention is as follows: an energy efficiency automatic test system of a power adapter comprises an electrical parameter measuring instrument, an adjustable load and a control unit, wherein the input end of the electrical parameter measuring instrument is connected with an alternating current power supply, the output end of the electrical parameter measuring instrument is connected with the input end of the power adapter, the input end of the adjustable load is connected with the output end of the power adapter, and the control unit is respectively connected with a signal end of the electrical parameter measuring instrument and a signal end of the adjustable load;
the control unit controls the adjustable load to work so that the power adapter can be preheated for a set time by continuously working at a rated output current;
the control unit controls the adjustable load to work to enable the power adapter to work at 100%, 75%, 50% and 25% of rated output current respectively, obtains input active power and output active power corresponding to the power adapter under the work of each current through the electrical parameter measuring instrument, and calculates arithmetic average efficiency according to the input active power and the output active power; the control unit controls the adjustable load to work to enable the output current of the power adapter to be 0, and the no-load active power of the power adapter is obtained through the electrical parameter measuring instrument;
the control unit respectively compares the arithmetic average efficiency with a standard specified arithmetic average efficiency and compares the no-load active power with a standard specified no-load active power, and if the arithmetic average efficiency exceeds the arithmetic average efficiency range or the no-load active power exceeds the no-load active power range, an alarm signal is sent out, the test is stopped, and the power adapter is judged to be unqualified; otherwise, the power adapter is judged to be qualified.
As a further improvement, in the test process, if the output current of the power adapter cannot reach the set test current, the power adapter is directly judged to be unqualified.
Further, the testing device further comprises a first temperature sensor connected with the control unit, the control unit collects the ambient temperature around the power adapter through the first temperature sensor, and if the ambient temperature exceeds a standard specified temperature range, an alarm signal is sent out and the testing is stopped.
The wind speed sensor is connected with the control unit, the control unit collects the wind speed around the power adapter through the wind speed sensor, and if the wind speed exceeds a standard specified wind speed range, an alarm signal is sent out and the test is stopped.
The temperature control device comprises a cabinet body, a heating unit, a refrigerating unit and a second temperature sensor which are connected with the control unit are arranged in the cabinet body, and the power adapter is placed in the cabinet body; the control unit controls the heating unit or the refrigerating unit to work so as to maintain the temperature in the cabinet body at a set temperature, and the power adapter is tested.
Further, a fan connected with the control unit is arranged in the cabinet body, and the control unit controls the fan to blow air to the power adapter at a set air speed and test the power adapter at the set temperature.
Advantageous effects
Compared with the prior art, the invention has the advantages that:
the invention can realize the automatic energy efficiency test of load adjustment, parameter reading and result calculation, has the advantages of convenient operation, reliable data and high automation degree, and can greatly save the test time and the labor cost.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a flowchart of the test of example 1 of the present invention;
FIG. 3 is a schematic structural view of example 2 of the present invention;
FIG. 4 is a schematic structural diagram of embodiment 3 of the present invention;
FIG. 5 is a schematic structural diagram of a temperature control device in example 4 of the present invention.
Wherein: the system comprises 1-an electrical parameter measuring instrument, 2-an adjustable load, 3-a control unit, 4-an alternating current power supply, 5-a power supply adapter, 6-a first temperature sensor, 7-a wind speed sensor, 8-a cabinet body, 9-a heating unit, 10-a refrigerating unit, 11-a second temperature sensor and 12-a fan.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Example 1
Referring to fig. 1 and 2, an energy efficiency automatic test system for a power adapter comprises an electrical parameter measuring instrument 1, an adjustable load 2 and a control unit 3, wherein the input end of the electrical parameter measuring instrument 1 is connected with an alternating current power supply 4, the output end of the electrical parameter measuring instrument 1 is connected with the input end of a power adapter 5, the input end of the adjustable load 2 is connected with the output end of the power adapter 5, and the control unit 3 is respectively connected with the signal end of the electrical parameter measuring instrument 1 and the signal end of the adjustable load 2; the electrical parameter measuring instrument 1 can read parameters such as voltage, frequency, current or electric quantity output by the alternating current power supply 4, the electrical parameter measuring instrument 1 can also read voltage, current and power values of the power adapter 5, the adjustable load 2 is an adjustable constant-current mode load, namely the control unit 3 can control the working current of the adjustable load 2;
the control unit 3 controls the adjustable load 2 to work, so that the power adapter 5 is preheated at the rated output current for the set time of continuous work;
the control unit 3 controls the adjustable load 2 to work to enable the power adapter 5 to work at 100%, 75%, 50% and 25% of rated output current respectively, obtains input active power and output active power corresponding to the power adapter 5 under the work of each current through the electrical parameter measuring instrument 1, and calculates arithmetic average efficiency according to the input active power and the output active power; the control unit 3 controls the adjustable load 2 to work to enable the output current of the power adapter 5 to be 0, and obtains the no-load active power of the power adapter 5 through the electrical parameter measuring instrument 1, wherein the arithmetic mean efficiency and the no-load active power are two indexes of the energy efficiency of the power adapter;
the control unit 3 respectively compares the arithmetic average efficiency with the standard specified arithmetic average efficiency and compares the no-load active power with the standard specified no-load active power, and if the arithmetic average efficiency exceeds the arithmetic average efficiency range or the no-load active power exceeds the no-load active power range, an alarm signal is sent out, the test is stopped, and the power adapter 5 is judged to be unqualified; otherwise, the power adapter 5 is determined to be qualified.
The connecting line between the power adapter 5 and the adjustable load 2 has a short length and a large cross section as much as possible, so that the output power read by the adjustable load 2 is not less than the actual output power of the power adapter 5 due to the voltage division of the connecting line. In the test process, if the output current of the power adapter 5 cannot reach the set test current, the power adapter 5 is determined as defective. For example, if the set test current is 75% of the rated output current and the actual output current of the power adapter 5 is 70% of the rated output current, the power adapter 5 is determined as being defective.
And when the energy efficiency test of the power adapter is carried out according to the national standard GB 20943 and 2013, the set time is 30 min. Of course, the setting time can also be calibrated according to the standards of the power adapter manufacturers.
The control unit 3 is a computer or a singlechip.
Example 2
Referring to fig. 3, on the basis of embodiment 1, the system further includes a first temperature sensor 6 connected to the control unit 3, the control unit 3 collects the ambient temperature around the power adapter 5 through the first temperature sensor 6, and if the ambient temperature exceeds the standard specified temperature range, an alarm signal is sent out and the test is stopped, so that the influence of the ambient temperature on the test can be reduced, and the test accuracy is ensured, for example, the standard specified temperature range is 23 ± 5 ℃.
Example 3
Referring to fig. 4, on the basis of embodiment 1 or 2, the system further includes an air speed sensor 7 connected to the control unit 3, the control unit 3 collects the air speed around the power adapter 5 through the air speed sensor 7, and if the air speed exceeds a standard specified air speed range, an alarm signal is sent out and the test is stopped, so that the influence of the air speed on the test can be reduced, and the test accuracy is ensured, for example, the standard specified air speed range is not greater than 0.5 m/s. During testing, no external fan, air conditioner or heat sink should be used to reduce the temperature of the power adapter 5 and the power adapter 5 should be placed on a non-conductive material.
Example 4
Referring to fig. 5, on the basis of embodiment 1, the system further includes a temperature control device, the temperature control device includes a cabinet 8, a heating unit 9, a cooling unit 10, and a second temperature sensor 11 connected to the control unit 3 are disposed in the cabinet 8, and the power adapter 5 is disposed in the cabinet 8; the control unit 3 controls the heating unit 9 or the cooling unit 10 to work to maintain the temperature in the cabinet 8 at the set temperature, and tests the power adapter 5.
A fan 12 connected with the control unit 3 is arranged in the cabinet body 8, and at a set temperature, the control unit 3 controls the fan 12 to blow air to the power adapter 5 at a set air speed, and tests are carried out on the power adapter 5.
When the power adapter 5 is applied to a severe environment, such as a low temperature (less than 5 ℃), a high temperature (greater than 45 ℃), and a high altitude (greater than 4500m), embodiment 4 can effectively simulate the severe environment to test the power adapter 5, so as to verify the stability of the power adapter 5 in operation.
The invention can realize the automatic energy efficiency test of load adjustment, parameter reading and result calculation, has the advantages of convenient operation, reliable data and high automation degree, and can greatly save the test time and the labor cost.
The above is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that several variations and modifications can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (6)
1. The automatic energy efficiency testing system of the power adapter is characterized by comprising an electrical parameter measuring instrument (1), an adjustable load (2) and a control unit (3), wherein the input end of the electrical parameter measuring instrument (1) is connected with an alternating current power supply (4), the output end of the electrical parameter measuring instrument (1) is connected with the input end of a power adapter (5), the input end of the adjustable load (2) is connected with the output end of the power adapter (5), and the control unit (3) is respectively connected with the signal end of the electrical parameter measuring instrument (1) and the signal end of the adjustable load (2);
the control unit (3) controls the adjustable load (2) to work, so that the power adapter (5) is preheated for a set time of continuous work at a rated output current;
the control unit (3) controls the adjustable load (2) to work to enable the power adapter (5) to work at 100%, 75%, 50% and 25% of rated output current respectively, obtains input active power and output active power corresponding to the power adapter (5) under each current work through the electrical parameter measuring instrument (1), and calculates arithmetic average efficiency according to the input active power and the output active power; the control unit (3) controls the adjustable load (2) to work to enable the output current of the power adapter (5) to be 0, and the no-load active power of the power adapter (5) is obtained through the electrical parameter measuring instrument (1);
the control unit (3) respectively compares the arithmetic average efficiency with a standard specified arithmetic average efficiency and compares the no-load active power with a standard specified no-load active power, if the arithmetic average efficiency exceeds the arithmetic average efficiency range or the no-load active power exceeds the no-load active power range, an alarm signal is sent out, the test is stopped, and the power adapter (5) is judged to be unqualified; otherwise, the power adapter (5) is judged to be qualified.
2. The automatic energy efficiency testing system for the power adapter as claimed in claim 1, characterized in that during the testing process, if the output current of the power adapter (5) cannot reach the set testing current, the power adapter (5) is directly judged to be unqualified.
3. The automatic energy efficiency testing system for the power adapter as claimed in claim 1, further comprising a first temperature sensor (6) connected to the control unit (3), wherein the control unit (3) acquires the ambient temperature around the power adapter (5) through the first temperature sensor (6), and if the ambient temperature exceeds a standard specified temperature range, an alarm signal is sent out and the test is stopped.
4. The automatic energy efficiency testing system for the power adapter as claimed in claim 1, further comprising an air speed sensor (7) connected with the control unit (3), wherein the control unit (3) collects the air speed around the power adapter (5) through the air speed sensor (7), and if the air speed exceeds a standard specified air speed range, an alarm signal is sent out and the test is stopped.
5. The automatic energy efficiency testing system for the power adapter according to claim 1, further comprising a temperature control device, wherein the temperature control device comprises a cabinet body (8), a heating unit (9), a cooling unit (10) and a second temperature sensor (11) which are connected with the control unit (3) are arranged in the cabinet body (8), and the power adapter (5) is placed in the cabinet body (8); the control unit (3) controls the heating unit (9) or the refrigerating unit (10) to work so as to maintain the temperature in the cabinet body (8) at a set temperature, and the power adapter (5) is tested.
6. The automatic energy efficiency testing system for the power adapter as claimed in claim 5, characterized in that a fan (12) connected with the control unit (3) is arranged in the cabinet body (8), and at the set temperature, the control unit (3) controls the fan (12) to blow air to the power adapter (5) at the set air speed and tests the power adapter (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110183692.8A CN112748355A (en) | 2021-02-08 | 2021-02-08 | Automatic power adapter energy efficiency test system |
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| CN202110183692.8A CN112748355A (en) | 2021-02-08 | 2021-02-08 | Automatic power adapter energy efficiency test system |
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| CN112748355A true CN112748355A (en) | 2021-05-04 |
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| CN202110183692.8A Pending CN112748355A (en) | 2021-02-08 | 2021-02-08 | Automatic power adapter energy efficiency test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740758A (en) * | 2021-09-04 | 2021-12-03 | 深圳一信泰质量技术有限公司 | Automatic energy efficiency testing method, device, equipment and medium for power supply product |
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| CN104635176A (en) * | 2015-01-15 | 2015-05-20 | 惠州出入境检验检疫局检验检疫综合技术中心 | Energy efficiency detection method of power adapter and system thereof |
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2021
- 2021-02-08 CN CN202110183692.8A patent/CN112748355A/en active Pending
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| CN101221226A (en) * | 2008-01-24 | 2008-07-16 | 中兴通讯股份有限公司 | Automatic testing method and apparatus of electric power |
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| CN104635176A (en) * | 2015-01-15 | 2015-05-20 | 惠州出入境检验检疫局检验检疫综合技术中心 | Energy efficiency detection method of power adapter and system thereof |
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| CN205691753U (en) * | 2016-05-27 | 2016-11-16 | 通标标准技术服务有限公司 | Power supply product electrical safety test system |
| CN106291400A (en) * | 2016-09-30 | 2017-01-04 | 广州市立强仪器科技有限公司 | A kind of power supply product efficiency automatic test approach |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113740758A (en) * | 2021-09-04 | 2021-12-03 | 深圳一信泰质量技术有限公司 | Automatic energy efficiency testing method, device, equipment and medium for power supply product |
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Application publication date: 20210504 |
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