CN111948479A - Charger testing method - Google Patents
Charger testing method Download PDFInfo
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- CN111948479A CN111948479A CN202010821879.1A CN202010821879A CN111948479A CN 111948479 A CN111948479 A CN 111948479A CN 202010821879 A CN202010821879 A CN 202010821879A CN 111948479 A CN111948479 A CN 111948479A
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- temperature
- charger
- time period
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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
Abstract
A testing method of a charger comprises the following steps: connecting a charger to be tested with a voltage control panel and a temperature sensor, wherein the voltage control panel and the temperature sensor are respectively connected with a man-machine device; the method comprises the steps that the human-computer equipment transmits a voltage output control command to a voltage control panel, the voltage control panel sends a command to a charger to be tested, the charger to be tested outputs corresponding voltage according to the received command, the temperature on the charger is detected in real time through a temperature sensor, and the detected voltage is transmitted to the human-computer equipment; the man-machine equipment compares the received temperature with a set temperature parameter, and if the received temperature is matched with the set temperature parameter, the charger to be tested is judged to be qualified; and if the received temperature is not matched with the set temperature parameter, judging that the charger to be tested is unqualified. The invention tests the temperature in the charging process and improves the factory quality of the charger.
Description
Technical Field
The invention belongs to the technical field of chargers, and particularly relates to a charger testing method.
Background
The conventional charger of the intelligent device such as a mobile phone has slow charging speed and long charging time. This is because the contact current of the USB interface of the charger must be less than 2A. The charger output voltage is fixed at 5V, so the maximum output power of the charger is 10W.
In order to realize fast charging, a fast charger is developed, the output USB interface of the fast charger is unchanged, that is, the maximum output current is still 2A, but the output voltage of the fast charger may be changed, which may be 5V, 12V, 20V, etc., so that the maximum output power of the fast charger may reach 20V × 2A — 40W, and thus the charging speed is faster.
The charger manufacturer needs to have on-load testing of each charger before it leaves the factory. When a conventional charger is tested, only one resistor is required to be connected to the output end of the charger, and because the output voltage of the conventional charger is unchanged and the resistance value of the resistor is unchanged, the current on the resistor (namely the output current of the charger is unchanged), and the temperature of the charger in the charging process is relatively low. In order to increase the charging speed, the output voltage of the fast charger is often large, the output voltage is variable, and the voltage is large in the early stage. In the early stage of rapid charging, very large heat is often generated, so that the temperature of the charger is high, and if a product is unqualified, the high temperature may damage components inside the charger.
Disclosure of Invention
In order to solve the above technical problem, the present invention provides a method for testing a charger, which is mainly used for testing a heating temperature during charging.
In order to solve the technical problems, the invention adopts the following technical scheme:
a testing method of a charger comprises the following steps:
connecting a charger to be tested with a voltage control panel and a temperature sensor, wherein the voltage control panel and the temperature sensor are respectively connected with a man-machine device;
the method comprises the steps that the human-computer equipment transmits a voltage output control command to a voltage control panel, the voltage control panel sends a command to a charger to be tested, the charger to be tested outputs corresponding voltage according to the received command, the temperature on the charger is detected in real time through a temperature sensor, and the detected voltage is transmitted to the human-computer equipment;
the man-machine equipment compares the received temperature with a set temperature parameter, and if the received temperature is matched with the set temperature parameter, the charger to be tested is judged to be qualified; and if the received temperature is not matched with the set temperature parameter, judging that the charger to be tested is unqualified.
When the temperature sensor is used for detecting the temperature of the charger to be detected, the temperature sensor is divided into three time periods, namely the temperature of a first time period, the temperature of a second time period and the temperature of a third time period, the set temperature parameters are correspondingly set to be the temperature T1, the temperature T2 and the temperature T3, the temperature of the first time period is compared with the temperature T1, the temperature of the second time period is compared with the temperature T2, and the temperature of the third time period is compared with the temperature T3.
The temperature of the first time period is the maximum temperature value detected in the first time period; the temperature of the second time period is the maximum temperature value detected in the second time period; and the temperature of the third time period is the maximum temperature value detected in the third time period.
The set temperature parameter is a temperature range, and the received temperature is matched with the set temperature parameter, namely the received temperature is in the range of the set temperature parameter; if the received temperature is greater than the upper limit of the set temperature parameter or less than the lower limit of the set temperature parameter, the received temperature is not matched with the set temperature parameter.
The temperature T1 is greater than the temperature T2 is greater than the temperature T3.
When the charger to be tested outputs voltage, the output voltage is detected, and whether the output voltage is the same as the output voltage sent to the charger to be tested by the voltage control board or not is checked.
The invention tests the heating temperature of the charger before leaving factory in the charging process, ensures the temperature resistance of the charger, improves the safety and reliability, avoids the problem that components are damaged due to heat productivity in the charging process, and plays a role in safety guarantee.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in fig. 1, the present invention discloses a method for testing a charger, comprising the following steps:
and connecting the charger to be tested with a voltage control panel and a temperature sensor, wherein the voltage control panel and the temperature sensor are respectively connected with the human-machine equipment. The temperature sensor can be used for detecting the assembled charger to be detected, and can also be used for directly testing the main heating element on the internal circuit board in the assembling process of the charger to be detected, and the temperature sensor is in contact with the corresponding part, so that the temperature value is detected.
The human-machine equipment transmits a voltage output control command to the voltage control panel, the voltage control panel sends a command to the charger to be tested, the charger to be tested outputs corresponding voltage according to the received command, the temperature on the charger is detected in real time through the temperature sensor, and the detected voltage is transmitted to the human-machine equipment. The man-machine equipment can respectively send commands of different output voltages, and the charger to be tested is tested in an all-around mode, so that the integrity of the test is guaranteed.
The man-machine equipment compares the received temperature with a set temperature parameter, and if the received temperature is matched with the set temperature parameter, the charger to be tested is judged to be qualified; and if the received temperature is not matched with the set temperature parameter, judging that the charger to be tested is unqualified.
When the temperature sensor is used for detecting the temperature of the charger to be detected, the temperature sensor is divided into three time periods, namely the temperature of a first time period, the temperature of a second time period and the temperature of a third time period, the set temperature parameters are correspondingly set to be the temperature T1, the temperature T2 and the temperature T3, the temperature of the first time period is compared with the temperature T1, the temperature of the second time period is compared with the temperature T2, and the temperature of the third time period is compared with the temperature T3. For example, the first time period may be 20 minutes after the start of charging; the second time period may be 21 to 40 minutes after the start of charging; the third time period may be 41 minutes to 60 minutes after the start of charging. According to the parameter indexes of different chargers to be tested, flexible setting can be carried out, different time schemes can be stored in the human-computer equipment in advance, direct selection is convenient, setting at each time is not needed, and the testing efficiency is improved.
The temperature of the first time period is the maximum temperature value detected in the first time period; the temperature of the second time period is the maximum temperature value detected in the second time period; and the temperature of the third time period is the maximum temperature value detected in the third time period. In the process of fast charging, the first time period is often the maximum voltage output, the heat productivity is the maximum at the moment, the second time period is taken as the middle period, the output voltage is reduced, the heat productivity is reduced, the third time period is the later period, the fast charging is not needed any more at the moment, the normal charging is kept, the output voltage is the minimum, and the corresponding heat productivity is also the minimum.
The set temperature parameter is a temperature range, and the received temperature is matched with the set temperature parameter, namely the received temperature is in the range of the set temperature parameter; if the received temperature is greater than the upper limit of the set temperature parameter or less than the lower limit of the set temperature parameter, the received temperature is not matched with the set temperature parameter. The temperature T1 is greater than the temperature T2 is greater than the temperature T3.
When the charger to be tested outputs voltage, the output voltage is detected, whether the output voltage is the same as the output voltage sent by the voltage control board to the charger to be tested is checked, and whether the output voltage meets the set requirement is checked.
Through the test, if the detected temperature in the first time period is greater than the set temperature T1 in the quick charging process, the heat generation amount is proved to have already been the set heat generation amount, the normal use of components in the charger is possibly influenced, and the burning of the plastic shell is possibly caused in serious cases.
Although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements, and the like can be made in the technical solutions of the foregoing embodiments or in some of the technical features of the foregoing embodiments, but those modifications, equivalents, improvements, and the like are all within the spirit and principle of the present invention.
Claims (6)
1. A testing method of a charger comprises the following steps:
connecting a charger to be tested with a voltage control panel and a temperature sensor, wherein the voltage control panel and the temperature sensor are respectively connected with a man-machine device;
the method comprises the steps that the human-computer equipment transmits a voltage output control command to a voltage control panel, the voltage control panel sends a command to a charger to be tested, the charger to be tested outputs corresponding voltage according to the received command, the temperature on the charger is detected in real time through a temperature sensor, and the detected voltage is transmitted to the human-computer equipment;
the man-machine equipment compares the received temperature with a set temperature parameter, and if the received temperature is matched with the set temperature parameter, the charger to be tested is judged to be qualified; and if the received temperature is not matched with the set temperature parameter, judging that the charger to be tested is unqualified.
2. The method for testing a charger according to claim 1, wherein the temperature sensor is divided into three time periods when detecting the temperature of the charger to be tested, the temperature of the first time period, the temperature of the second time period and the temperature of the third time period are respectively set as a temperature T1, a temperature T2 and a temperature T3, the temperature of the first time period is compared with a temperature T1, the temperature of the second time period is compared with a temperature T2, and the temperature of the third time period is compared with a temperature T3.
3. The method for testing a charger according to claim 2, wherein the temperature of the first time period is a maximum temperature value detected in the first time period; the temperature of the second time period is the maximum temperature value detected in the second time period; and the temperature of the third time period is the maximum temperature value detected in the third time period.
4. The method as claimed in claim 3, wherein the set temperature parameter is a temperature range, and the received temperature is matched with the set temperature parameter, which means that the received temperature is within the set temperature parameter range; if the received temperature is greater than the upper limit of the set temperature parameter or less than the lower limit of the set temperature parameter, the received temperature is not matched with the set temperature parameter.
5. The method for testing a charger according to claim 4, wherein the temperature T1 is greater than the temperature T2 is greater than the temperature T3.
6. The method for testing the charger according to claim 5, wherein when the charger to be tested outputs the voltage, the output voltage is detected to check whether the output voltage is the same as the output voltage sent by the voltage control board to the charger to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821879.1A CN111948479A (en) | 2020-08-15 | 2020-08-15 | Charger testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821879.1A CN111948479A (en) | 2020-08-15 | 2020-08-15 | Charger testing method |
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| CN111948479A true CN111948479A (en) | 2020-11-17 |
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Citations (5)
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| CN202663151U (en) * | 2012-06-29 | 2013-01-09 | 温州大学 | Quick charge system for lead-acid storage batteries in photovoltaic system |
| CN104393627A (en) * | 2014-08-29 | 2015-03-04 | 展讯通信（上海）有限公司 | USB charger, mobile terminal and charging control method |
| CN104659844A (en) * | 2013-11-21 | 2015-05-27 | 西安丁子电子信息科技有限公司 | Charging head capable of setting output parameters |
| CN104901365A (en) * | 2015-05-22 | 2015-09-09 | 聊城大学 | Lead-acid battery pulse charging control system |
| KR20200069768A (en) * | 2018-12-07 | 2020-06-17 | 대한민국(관리부서: 행정안전부 국립과학수사연구원장) | Battery charge-discharge cycle test after battery heating test apparatus and method |
-
2020
- 2020-08-15 CN CN202010821879.1A patent/CN111948479A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202663151U (en) * | 2012-06-29 | 2013-01-09 | 温州大学 | Quick charge system for lead-acid storage batteries in photovoltaic system |
| CN104659844A (en) * | 2013-11-21 | 2015-05-27 | 西安丁子电子信息科技有限公司 | Charging head capable of setting output parameters |
| CN104393627A (en) * | 2014-08-29 | 2015-03-04 | 展讯通信（上海）有限公司 | USB charger, mobile terminal and charging control method |
| CN104901365A (en) * | 2015-05-22 | 2015-09-09 | 聊城大学 | Lead-acid battery pulse charging control system |
| KR20200069768A (en) * | 2018-12-07 | 2020-06-17 | 대한민국(관리부서: 행정안전부 국립과학수사연구원장) | Battery charge-discharge cycle test after battery heating test apparatus and method |
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| Title |
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| 程龙保 等: "《数字万用表使用方法快易通》", 31 December 2014 * |
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