Huawei Huawei's 5G accompanying WiFi Pro E6878-370 model is exquisitely designed. Inserting a 5G SIM card can realize the conversion of 5G signals to high-speed WiFi, and non-5G mobile phones, tablets, laptops and other devices can also enjoy 5G high-speed network speed. In addition, it also supports small current charging as an emergency power supply. For this product with a strong sense of science and technology, let's take it apart and see how it is designed internally.
First, Huawei's 5G accompanying WiFi Pro appearance
The product is packaged in white cardboard, and the words of product appearance and Huawei 5G accompanying WiFi Pro are printed on the front.
The basic information of the product is printed on the bottom of the box: product name: 5G wireless data terminal; Model: e6878-370; ; Color: ceramic white.
The carton is designed with upper and lower covers, and the back of the carton is printed with information about the four functions of the product.
In addition to Huawei's 5G accompanying WIFI Pro, there is also a 40W SuperCharge charger, data cable and instruction manual.
Both ends of USB-A-to-USB-C data line are bending-resistant, with 5A-shaped design, which can pass a large current of 5A, and the whole line is smooth and burr-free.
The shell at the input end of the charger is marked with product parameter information: model HW-100400C01; Enter100-240v50/60hz1.2a; Output the maximum values of 5V/2A, 9V/2A, 10V/4A; ; The charger manufactured by Huawei Technologies Co., Ltd. has passed 3C certification and Grade 6 energy efficiency certification.
The top surface of charger output is equipped with USB-A interface, white rubber core, and Huawei brand is intaglio printed next to it.
Huawei's 5G accompanying WIFI Pro has a flat and slender body with rounded corners. One end of the front of the fuselage is equipped with a 1.45-inch LCD screen, and the other end is printed with Huawei brand and 5G.
The side of the fuselage is equipped with power key, menu key and SIM card slot.
The SIM card slot is protected by a plastic plate, and a sign indicating the insertion direction of the SIM card is printed on the small plate.
If the SIM card is not inserted after startup, the user will be prompted to insert the card and restart the device.
After normal operation, the 5G welcome interface will be displayed first-welcome to use 5G.
On the menu interface, there are options such as returning to factory, data roaming and low current charging. At this time, the menu key corresponds to the "Next" function and the power key corresponds to the "OK" confirmation function.
After correct operation, 5G signals can be converted into high-speed WiFi, and non-5G mobile phones, tablets, laptops and other devices can also enjoy 5G high-speed network speed.
Product name, model and other information are printed on the bottom of the fuselage, and it has passed CE certification and 3C certification.
It is equipped with two interfaces: 1A 1C, which supports the maximum wired input of 40W, 18W or 22.5W output, and the battery capacity is 8000mAh. In addition, it also supports reverse wired/wireless charging.
Using ChargerLAB POWER-Z KT00 1 to detect the output protocol of USB-A port, it shows that DCP, QC2.0 and FCP protocols are supported.
In addition, through voltage deception operation, select Huawei SCP option, and the A port can output 5V.
Port a supports Huawei FCP protocol.
Port a supports Huawei SSCP protocol.
No output protocols supported by USB-C port were detected using this table.
The net weight of the product is about 281g.
Second, Huawei 5G accompanying WIFI Pro disassembly
Take off the top shell of the fuselage, the shell is covered with small fixing posts and buckles, and the two sides of the fuselage are stuck with black double-sided tape, so the product packaging is firm.
The LCD screen is placed in a plastic can.
A wireless charging coil is placed in the center of the fuselage, and the coil is tightly wound.
A metal copper foil sticker is attached near the wireless charging coil.
The solder joint of the wire core is full and the work is solid.
The outer shell on the other side is also removed, and the center of the black plastic plate is designed with a groove for placing the battery.
Foam is attached to the position of the fuselage shell corresponding to the battery cell to protect the battery cell.
Four antennas (1, 2, 3, 4) are attached to both ends of the plastic plate, and there are fixing screws in the round holes.
The number 1 sticker antenna is printed with SX05MIM0 1.
No.2 sticker antenna is printed with SX 1 1 M2+HB+B32.
No.3 sticker antenna is printed with SX03B32.
No.4 sticker antenna is printed with SX09M2+LB.
Close-up of lithium-ion polymer battery, with relevant parameter information printed on the sticker. Model: HB896487ECW Rated capacity: 7800mAh/29.79Wh Typical capacity: 8000mAh/30.56Wh Rated voltage: 3.82V Charging limit voltage: 4.4V battery19165438+1passed CE certification on October 4th.
Close-up of the other side of the battery, ATL battery, the battery is 4.3mm thick, 63mm wide and 83mm long, with an average voltage of 3.82V V V.
Remove the screws and take out the plastic plate. The middle plate is made of aluminum alloy and injection molded on both sides. The chips on the PCB below all have shielding covers, and graphite thermal conductive stickers are attached to dissipate heat.
The battery is connected with the PCB board through a flat cable.
In the center of the PCB board are three large shields with black thermal conductive patches, and there are A and B patch antennas at both ends of the board.
The words SX 1 1MAIN are printed on antenna a. ..
SX07SUB is printed on antenna B.
Remove the metal shield on the PCB, and some chips are affixed with heat dissipation pads to help conduct heat.
Two NMOS transistors near USB-A port, which are used for interface switching, come from PSMN4R2-30MLD of NEXPERIA.
There are four MOS tubes in the shielding layer.
Huawei hisilicon Hi6422 PMIC.
Shengbangwei SGM66055 boost IC, 2.2MHz working frequency, ultra-low static current, synchronous rectification and boost, 5V fixed output, built-in switch tube, WLCSP 1.2 1mm ultra-small package.
Bang Wei SGM66055 details.
Huawei hisilicon Hi6526 PMIC.
Huawei hisilicon Hi642 1 PMIC.
Screen printing 6563G.
Wang Hong MX30UF4G 18AB, 4BITSLC flash memory, used for storage system and firmware.
Wang Hong MX30UF4G 18AB information.
Huawei Hisilicon Hi9500 Ba Dragon 5005G SOC, the PCB area inside the WiFi terminal is sufficient, and the mobile phone does not use POP laminated packaging to control the cost, and the memory is independently welded on the left side. Ba Long 5005G multimode chip supports NSA and SA networking architecture. This 5G wireless terminal supports the theoretical peak speed of 1.65Gbps usb3.0 Type-C connection and the theoretical peak speed of 867Mbps WiFi connection, so that non-5G mobile phones, tablets and laptops can also enjoy 5G high speed.
SK Hynix H9HCNNNBKMAL, LPDDR4 memory.
Screen printing 6H 1 1 and 6H 12 chips.
Huawei hisilicon Hi6365 rf transceiver.
Four small chips.
Screen printing 13H9.
The edge of the shield is cut, and there is a wireless charging main control and charging power tube.
Richtek RT3 18 1C wireless transmitter solution is optimized for LP-A1coil scheme by integrating H-bridge power stage and current detection amplifier. The external power stage can support high power output and MP-A5/MP-A 1 1 scheme.
Data and information of pteridophyte RT3181C.
Four PSMN4R2-30MLD, from NEXPERIA, NMOS tube, used for wireless charging power supply output.
Front view of PCB board.
Open the metal shield next to it, there are three big chips inside.
Vertical USB-PD and bidirectional PWM buck-boost controller RT7885 not only have buck-boost control function, but also integrate USB PD protocol identification and MCU, which is highly integrated and can reduce the number of external components. At the same time, LiTeRT RT7885' s built-in charge pump can drive low-cost NMOS and support charging of 1 to 4 series lithium batteries, which is very suitable for mobile power supply.
Technetium RT7885 information.
The other two chips are also powerful, model RT96 12B, synchronous rectification and buck half-bridge drive, and cooperate with the wireless charging master controller RT3 18 1C for wireless charging power MOS transistor drive.
Technetium RT96 12B information.
Four white NPO resonant capacitors.
The chip on the front of the circuit board is also covered with a metal shell.
Huawei HiSilicon Hi 1 15 1 wireless control chip, which is used to convert 5G signals into WiFi hotspot connections.
Close-up of LCD display cable.
The female seat of port C is reinforced by a metal shell, and E9ASA is printed on the metal shell.
SIM card slot patch welding, metal shell printed with 985B.
Screen printing 2HZ.
All dismantled, let's have a family photo.
Summary of disassembly of charging head net
Huawei Huawei's 5G accompanying WIFI Pro is equipped with 8000mAh large-capacity battery, which can work continuously under 5G high load 10 hour. This machine supports 22.5W reverse wired charging and 15W reverse wireless charging, and is equipped with Huawei 40W super fast charging charger. This product can convert 5G signals into high-speed WiFi through Ba Long 5000 chip, and realize 5G dual-mode full netcom. Non-5G mobile phones, tablets, laptops and other devices can also enjoy the network speed 10 times faster than 4G. Without changing the mobile phone, this portable mobile router can take you to enjoy the 5G era, and can also be used as a router to transmit large files with zero traffic connection.
Through dismantling, the charging headnet learned that Huawei HiSilicon Hi9500 Ba Long 5005G SOC core chip was installed inside, and HI6421HI6422/HI6526PMIC, Hi 1 15 1 wireless control chip and Hi6365 RF transceiver were used. In addition, the memory chips of Hynix and Wang Hong and the wireless charging solution of Technetium are adopted.
All chips on the sub-circuit board are covered with metal shields to avoid interference, and the main heating chip is attached with heat dissipation pads to help conduct heat; The battery cell is placed in the groove, and the groove area is made of aluminum alloy to help the battery cell dissipate heat; The wireless charging coil is tightly wound and the wire core is welded firmly. This product works well as a whole.