Part of the bad manufacturers and business mad price war, so that the market prospects of the mobile power industry is unusually noisy, however, there are many senior professional manufacturers have been concentrating on making products, intentions to do the brand. According to Xiaobian know three years in the industry practitioners, DOCA (Hong Kong) Group Co., Ltd. is a typical representative. This deliberately bought from the official flagship store more than Ka Tigard DOCA D568 mobile power supply, test it for electrical performance data, and disassemble to see PCBA board and batteries
Mobile power industry chaos, some bad manufacturers and businesses crazy price war, so that the market prospects of the mobile power industry is unusually exceptionally noisy, however, there are many senior professional manufacturers have been concentrating on products, intentions to do the brand. According to Xiaobian three years in the mobile power industry know, DOCA (Hong Kong) Group Co., Ltd. under the more than Jia Mobile Power is a typical representative. This time we deliberately bought from Dorgau Lynx official flagship store this DOCA new work:
DOCA D568 mobile power supply, test it for electrical performance data, and disassemble to view PCBA board and batteries, there are figures and facts, Follow together:
First, we have the main evaluation: DOCA D568
Random annex warranty certificate, certificate, MicroUSB charging cable
Nominal parameters on the back of the product enclosure
Product nominal parameters:
Nominal capacity: 10400mAh
Input voltage and current: 5V / 1A
Output voltage and current: Dual USB output 5V / 1A, 5V / 2.1A
Second, the evaluation part
Start with 5V / 1A evaluation:
1, no-load voltage
Before testing the no-load voltage, we use a DC power supply to fully charge the mobile power supply until the input current is zero. The measured charging voltage and current of the DOCA Po D568 is 5V / 1A. Connected to the load cell, the test that Doka more than D568 no-load voltage of 5.228V, fully compliance, industry-standard value of the standard between 5.0V-5.25V.
The use of load cell to the product name to more than DOCA D568 mobile power supply for constant current discharge, discharge 16:05, discharge voltage: 4.935V, excellent
Doca D568 mobile power continuous discharge 285 minutes after the discharge voltage of 4.982V, the voltage fluctuation is very small, excellent.
DOCA D568 mobile power discharge for a long time, after 412 minutes after discharge, the discharge ended, the cut-off voltage of 4.976V, to charge all kinds of products no problem. Now let's take a look at the detailed data record during the entire discharge process of DOCA.
DOCA D568 mobile power supply 1A constant current discharge data record table
放电时间 | 电压(V) | 电流(mA) | 计时 |
16:05 | 4.935 | 997 | 开始 |
16:20 | 4.95 | 997 | 15 |
16:35 | 4.953 | 998 | 30 |
16:50 | 4.951 | 998 | 45 |
17:05 | 4.925 | 997 | 60 |
17:20 | 4.926 | 997 | 75 |
17:35 | 4.908 | 997 | 90 |
17:50 | 4.915 | 998 | 105 |
18:05 | 4.955 | 997 | 120 |
18:20 | 4.945 | 997 | 135 |
18:35 | 4.956 | 997 | 150 |
18:50 | 4.951 | 997 | 165 |
19:05 | 4.954 | 997 | 180 |
19:20 | 4.951 | 997 | 195 |
19:35 | 4.95 | 997 | 210 |
19:50 | 4.956 | 997 | 225 |
20:05 | 4.951 | 997 | 240 |
20:20 | 4.95 | 997 | 255 |
20:35 | 4.98 | 997 | 270 |
20:50 | 4.982 | 997 | 285 |
21:05 | 4.979 | 996 | 300 |
21:20 | 4.978 | 996 | 315 |
21:35 | 4.978 | 996 | 330 |
21:50 | 4.978 | 997 | 345 |
22:05 | 4.978 | 997 | 360 |
22:20 | 4.978 | 997 | 375 |
22:35 | 4.978 | 997 | 390 |
22:50 | 4.978 | 997 | 405 |
22:57 | 4.976 | 997 | 412 |
平均电压 | 4.95672 | 997 | 412
|
Seen from the above data, the Doka D568 mobile power to the product nominal 1A constant current discharge the entire process, the discharge voltage is stable, the discharge voltage range: 4.908V-4.982V, the voltage fluctuation range is only 0.074V, which is a measure of a mobile Power is a very important parameter, DOCA Power D568 excellent performance of the mobile power data, the average output voltage is: 4.95672V, with 1A output life of 412 minutes.
Third, 5V / 2.1A standard test
Before the test, we re-power the DOCA Power Supply D568 with a DC power supply, and then use a load cell to make a constant current discharge test with a nominal 2A of the product and check the output voltage. The test begins with a standard of 2.1A at 11:03 and the measured platform Voltage is 4.806V, qualified.
After 101 minutes of continuous discharge, the discharge voltage is 4.819V, the overall stability, little fluctuation.
DOCA D568 mobile power after 183 minutes after the end of the discharge process, the measured cut-off voltage is 4.772V, qualified.
DOCA D568 mobile power 2A discharge data record sheet
放电时间 | 电压(V) | 电流(mA) | 计时 |
11:03 | 4.775 | 2112 | 开始 |
11:18 | 4.768 | 2111 | 15 |
11:33 | 4.768 | 2111 | 30 |
11:48 | 4.776 | 2112 | 45 |
12:03 | 4.778 | 2111 | 60 |
12:18 | 4.778 | 2111 | 75 |
12:33 | 4.778 | 2110 | 90 |
12:48 | 4.776 | 2108 | 105 |
13:03 | 4.789 | 2108 | 120 |
13:18 | 4.775 | 2108 | 135 |
13:33 | 4.778 | 2108 | 150 |
13:48 | 4.796 | 2108 | 165 |
14:03 | 4.776 | 2108 | 180 |
14:06 | 4.772 | 2108 | 183 |
平均电压 | 4.77957 | 2109.571429 | 183
|
From the above table records detailed data, DOCA D568 mobile power to 2A constant current discharge, the discharge voltage range of 4.768V-4.796V, the fluctuation range of 0.028V, can be seen at a nominal 2.1A constant current discharge Discharge voltage stability, indicating that DOCA D568 mobile power whether it is full or almost no electricity, the entire process can guarantee 2.1A sufficient current intensity to 2.1A high current input digital products.
Fourth, DOCA D568 mobile power comprehensive data sheet:
多嘉D568移动电源综合数据表 |
标称参数 | 标称输出电压 | 标称输出电流 | 标称容量 | 转换效率 |
5V | 1000mA;2100mA | 10000mAh | 1A标准 | 2.1A标准 |
实际参数 | 平均输出电压 | 平均输出电流 | 实际释放容量 |
4.95672V | 997mA | 6846.066mAh | 88.19% |
|
4.77736V | 2109mA | 6434.1928mAh |
| 79.91%
|
Comments: The test shows that DOCA D568 mobile power regardless of 1A or 2.1A USB output port of the average output voltage, the actual output capacity, conversion rate and other electrical performance is very good. We can see that the quality requirements of DOCA are obvious to all.
Fifth, 100 short-circuit fatigue test:
Test reasons: mobile power lithium batteries, manufacturers and consumers are most concerned about is the security issue. Lithium battery explosion fire serious accident, the trigger is the most short-circuit. Because the short circuit, leading to a large current cell discharge moment, rapid internal warming, cell internal protection failure or no protection, leading to overheating batteries fire or explosion. Short circuit, the mobile power output will be a very large current, more than 5A, and some even exceed 10A. Such a large instantaneous current, the mobile power control panel on the various materials, will have a great impact, the most effective test panel reliability, to ensure that the control panel in extreme cases can effectively protect the batteries, batteries and Isolation of external extremes to avoid overheating. Before hand has not been very convenient short-circuit test equipment, can not understand the reliability of various brands of mobile power design. Nine Five wind technology now launched the Tiangong Tester, especially for mobile power designed automatic short circuit test. Today, we use Tiangong-1 to conduct a hundred short-circuit tests on mainstream mobile power models to see how these products are short-circuit proofing.
The current short-circuit protection 3 kinds of mainstream ways:
1, short circuit protection Rely on battery protection circuit, the general use of battery protection chip DW01 8205. Such short-circuit protection design, the general need to activate the recovery after a short circuit. Button can not be restored.
2, MCU control chip software algorithms to achieve short-circuit protection. This design, there will be general alarm instructions. When the MCU detects the mobile power output short circuit or over current, it will perform protection, disconnect the output channel. A lot of brand products at the same time using DW01 such as battery protection as the first protection, MCU algorithm as the second protection. Press the button to restore the output, a few products will automatically resume output.
3, synchronous boost IC output short circuit protection. Some products start with the latest 5V / 2A synchronous boost ICs such as the G5177B. These new ICs have a more accurate short-circuit protection design that implements short-circuit protection before the DW01 and MCU perform protection actions. After this protection occurs, the product will automatically resume output. Some branded products perform all three short circuit protection measures to achieve the most stringent short circuit protection design.
Test results: DOCA D568 mobile power 111 short-circuit test, through the load test can be seen at 1A constant current discharge, the output voltage of 4.980V, completely normal. We also test the phone charging, the same can be, outstanding performance. Through the test data combined with the disassembled circuit board analysis DOCA D568 fully protected. Similar to the size of the millet mobile power supply, the structure is also an astonishingly similar way of assembly, however, the multi-D568 mobile power supply adopts the higher-end liquid crystal digital display solution. Program design uses 3 heavy short circuit protection, charge-discharge efficiency, LED flashlight power. Discharge circuit using a synchronous buck design, the efficiency was significantly higher than the other ordinary boost combination. Charging switch buck program, high current does not heat. Relatively speaking, this is the design efficiency of the eight Hengping products inside the highest. In addition there are over charge, over discharge, over voltage, over current and other protection tests, this product is fully equipped.
Sixth, DOCA D568 mobile power teardown evaluation:
DOCA D568 mobile power demolition components map, the original imported Samsung batteries, like! Hard metal shell polishing process, feel smooth and delicate, the ultimate experience.
DOCA D568 Mobile Power Mobile Power PCBA details, exquisite workmanship, generous materials, high-end brand style for all to see.
Seven, the actual capacity test
Can be seen through the dismantling figure above, DOCA D568 charging treasure is used 4 18650 batteries, batteries imported Samsung, single capacity of 2600mAh.
Is being tested on the sub-instrument.
编号 | 实际容量 | 实际组成 |
#1 | 2592.87 | 使用进口三星18650*4节电芯,单节2600mAh,标称10400mAh |
#2 | 2592.87 |
#3 | 2593.33 |
#4 | 2598.70 |
总计 | 10377.77mAh |
Conclusion: According to the data shows through the sub-capacity analyzer after disassemble the actual capacity of the battery after the division of the nominal capacity of the product with a difference of 22.23mAh, is an error to accept the range that the multi-D568 Doka power bank is using 4 original Imported Samsung A batteries.
Edit Summary: DOCA D568 power for the German designers effort to build, perfect quality, high cost The world's only touch-key LCD smart digital power supply; Japanese metal polishing manufacturing process, feel first-class, ultimate experience. Dual USB output, measured from the performance of this mobile power 1A conversion rate of 88.19%, 2.1A conversion rate of 79.91%, the performance is excellent, folding machine visible, PCBA board real material, core components batteries, Is the use of imported 4 A Samsung batteries, than the market capacity of 5 low-cost domestic rechargeable batteries treasure much lighter, but the performance is better. DOCA D568 mobile power internally and externally, whether in the design and product materials and quality control, or in the functional design and development are the pursuit of the ultimate, highlighting the big brand style. (This product is the test of the Romas Shi Sense4, Suo Yang SY03, product can PN968 and other low-cost 10000 mAh mobile power unmatched)