Preface
The charging head network got a tape measure power bank of the Brain Hole Fan brand, this power bank is a triangular body, with a USB-C interface telescopic cable, a length of 70cm, and the body of the power bank is also equipped with a USB-C interface, which supports 20W fast charging input and 20W fast charging output, meeting the fast charging needs of Apple and Android mobile phones.
Brain hole fan tape measure power bank has a built-in 10000mAh battery, and has a percentage power display, the power bank has a hanging ring, you can use a lanyard to hang on your body, no need to hold it. The design of the self-contained cable eliminates the need to look for a charging cable, making it very convenient to use. The following brings the dismantling of this brain hole fan tape measure power bank, and let's take a look at the internal design and materials.
Brain hole fan 10000mAh tape measure power bank unboxing
The color of the box is green on the front, and the front is printed with the FansDreams brand, product appearance, and the name of the power bank with a tape measure.
Product parameters and business information are printed on the side.
The package contains a brain hole model, a tape measure, a power bank, a rope and an instruction manual.
The design of the power bank is very individual, the fuselage is triangular, with a white glossy shell and rounded edges.
One end of the fuselage is also designed with a lanyard hole.
With the included lifting rope, it becomes a very stylish pendant.
In addition, there is also a hidden power digital display screen on the front, which can accurately display the remaining power of the power bank.
The bottom is equipped with a USB-C port and a retractable USB-C cable.
The USB-C cable terminal housing is designed with a protrusion to make it easy for users to pull the cable out for use.
The back of the fuselage is printed with the parameter information of the power bank.
The nameplate is also inclined parallel to the side of the aircraft
Model Number: NDDY009
额定容量:5500mAh(5V3A)
Rated voltage and energy: 3.7V(37Wh)
Cell: 21700/4800mAhx2
自带线c口输入:5v3a、9v2a、12v1.5a
c口输入:5v3a、9v2a、12v1.5a
自带线c口输出:5v3A、9v2.22A、12v1.67a
PPS 5-5.9V-3A、5-11V2A
c口输出:5v3a、9v2.22a、12v1.67a
PPS 5-5.9V-3A、5-11V2A
Manufacturer: Shenzhen Brain Hole Technology Co., Ltd
Telescopic wire module supplier: Guangdong Qiyuan Innovation and Development Co., Ltd
Manufacturer: Magic Fox Technology (Shenzhen) Co., Ltd
The power bank has passed the CCC certification.
The body of the power bank is designed with three equal sides, and the length is about 10.5cm.
The thickness of the fuselage is about 2.5cm.
In addition, the length of the USB-C cable is measured to be about 63.5cm.
The size of the product in the hand is intuitively felt.
In addition, the net weight of the power bank is about 234g.
The USB-port supports FCP, SCP, AFC, QC3+/4+, PE2.0, PD3.0, PPS, DCP, and Apple 2.4A charging protocols as measured by the ChargerLAB POWER-Z KM003C.
The PDO packet shows that the USB-C port also has three sets of fixed voltage ranges of 5V3A, 9V2.22A, and 12V1.67A, and two sets of PPS voltage ranges of 5-5.9V3A and 5-11V2A.
The USB-C cable output compatible protocol is the same as that of the USB-C port.
In addition, PDO packets are the same, and the output performance is the same.
Brain hole fan 10000mAh tape measure power bank disassembly
After reading the unboxing and testing of the Brain Hole Fan tape measure power bank, let's disassemble it and take a look at the internal design and materials.
First, disassemble the case along the seams of the fuselage.
Close-up of lanyard holes inside the housing.
Inside the housing there is a PCBA module and two 21700 batteries.
The positive electrode of the battery is connected to the PCBA module by soldering with silicone wire.
The negative electrode of the battery is also connected by welding,
Attach a thermistor to the battery with high-temperature tape.
The self-supplied telescopic wire is also connected by welding.
Unscrew the fixing screws and solder to remove the battery and PCBA module.
Close-up of the built-in telescopic line sliding mechanism, using a transparent case.
Close-up of two 21700 batteries built into the power bank.
The power bank has a built-in 21700mAh battery capacity of 4800mAh, a rated voltage of 3.7V, and an energy of 17.76Wh.
The positive electrode of the battery is insulated with barley paper.
Barley paper is also pasted between the cathode nickel sheet and the battery to strengthen the insulation.
The front of the PCBA module is at a glance, the battery protection chip is welded in the lower left corner, the main control chip of the mobile power supply is welded in the middle, the alloy inductor is welded above the main control chip, and two VBUS switch tubes are welded in the lower right corner.
Solder the 188 LED digital tube on the back of the PCBA module, solder the USB-C receptacle in the lower left corner, and solder the Hall element in the lower right corner. The main control chip is in the middle of the PCBA module, and the exposed copper and tin enhance the heat dissipation performance.
The main control chip of the mobile power supply comes from Zhirong Technology, model SW6236, which is an A+A+C+C four-port multi-protocol mobile power supply SOC, with integrated 5A high-efficiency switching and charging, built-in 22.5W high-efficiency synchronous boost output, with an efficiency of up to 95.73%, in addition, the standby power consumption is very low, less than 40μ [email protected]. It supports fast charging at any port of four ports, and supports two-way input and output of two C ports. At the same time, it supports a variety of mainstream fast charging protocols such as PPS/PD/SCP/FCP/QC/AFC/PE/BC1.2, which is suitable for the fast charging needs of most devices on the market.
Zhirong Technology SW6236 supports 3.6V/3.65V lithium iron phosphate batteries and 4.2V/4.3V/4.35V/4.4V/4.5V ternary lithium batteries, with I²C interface to set charging current, output voltage and output current limiting. It also supports intelligent insertion recognition, supports low-current mode and wireless charging mode, and also supports fast charging while charging and discharging in wireless charging mode.
SW6236 has a built-in coulomb meter for accurate fuel gauge and a built-in 12-bit ADC to provide high-resolution analog-to-digital conversion, supports 3-5 LED fuel gauge displays, and supports 188 digital tubes with fast charge indication and wireless charging icons, so that users can easily understand the performance and status of the device. In addition, it has multiple protection functions such as OVP/OCP/UVP/OTP/CTP and NTC temperature protection, and the reliability is guaranteed.
Close-up of 2.2μH alloy inductor, using a large volume of 10*10 to improve efficiency and reduce heat generation.
A 5mΩ sampling resistor is used to sense the chip output current.
Two 8205A MOS tubes are used for self-cable and USB-C socket output switching.
188 LED数码管特写。
Hall element silk screen 251, used to detect that the self-belt line is pulled out, and automatically turn on the power bank output.
NTC thermistors are used to detect battery temperature.
The battery protection chip is from Saixin Micro, model XB8886A, which is used for battery overcharge, over-discharge and over-current protection.
The USB-C receptacle is soldered through a hole and has a black tongue inside.
A list of all dismantling and a family photo.
Summary of the dismantling of the charging head network
The Brain Hole Fan Tape Measure Power Bank has a built-in 10,000mAh battery, which is the perfect balance of volume and capacity. The power bank comes with a retractable USB-C cable, and the output can be used to charge the mobile phone, or to charge the power bank, you can use the own cable to complete, eliminating the trouble of carrying a data cable. The fuselage is also equipped with a USB-C port, which can be used to charge the power bank with a data cable, which is easy to use.
Through dismantling, the charging head network learned that this mobile power bank uses two 21700 batteries in parallel, adopts a Saixin micro-XB8886A protection chip, and is equipped with a thermistor to detect the battery temperature. The mobile power supply uses Zhirong Technology SW6236 highly integrated mobile power supply SOC, supports multi-port applications, simplifies circuit design, and realizes all the functions of PD fast charging mobile power supply on a single chip, with the characteristics of single cell charging, smart device access, wireless charging, low standby power consumption, etc., and realizes flexible configuration through I²C interface. It supports a variety of fast charging protocols and power display methods, with comprehensive protection mechanisms and excellent reliability. The SW6236 is housed in a compact QFN52 package, which is suitable for a variety of power bank forms, making it an excellent choice for multi-port fast charging power banks.