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Disassembly report: Huawei 5g accompanied by WiFi Pro e6878-370

via:充电头网     time:2020/4/13 15:45:28     readed:768

The maturity and commercial use of 5g technology have led many mobile phone brands to launch their own 5g mobile phones. Even so, the first batch of 5g mobile phones was only released in the middle of last year. For small partners who can use or just start new non 5g mobile phones, the willingness to pay for new 5g mobile phones is very small. Huawei has launched its 5g accompanying WiFi Pro mobile router for this purpose.

1、 Appearance of Huawei 5g accompanying WiFi Pro

The product adopts white hard paper packaging box, with the product appearance drawing and the words of Huawei 5g accompanying WiFi Pro 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 paper box adopts the design of heaven and earth cover, and the four function description information of the product is printed on the back.

In addition to the WiFi Pro accompanying Huawei 5g, there are also40W supercharge chargerData line and instruction manual.

The two ends of usb-a to usb-c data line are bent resistant and designed with 5A characters, which can pass a large current of 5A, and the whole body of the line is smooth without burr.

Product parameter information is marked on the input end shell of charger: model hw-100400c01; input 100-240V 50 / 60Hz 1.2A; output 5V / 2a, 9V / 2a, 10V / 4A max; made by Huawei Technology Co., Ltd. The charger has passed 3C certification and VI energy efficiency certification.

The top of the charger output is equipped with usb-a interface, white rubber core, and Huawei brand is intaglio printed on the side.

Huawei's 5g accompanying WiFi Pro has a flat and long body, round corner design and hands-free design. One end of the front of the body is equipped with a 1.45 inch LCD screen, and the other end is printed with Huawei brand and 5g characters.

The side of the body is equipped with power key, menu key and SIM card slot.

The SIM card slot is protected by a plastic plate, and the small plate is printed with the sign of SIM card placement direction.

If the SIM card is not inserted after power on, the user will be prompted to insert the card and restart the device.

After normal operation and startup, the 5g welcome interface - welcome to 5g will be displayed first.

On the menu interface, there are options such as return, factory recovery, 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 signal can be converted to high-speed WiFi. Non 5g mobile phones, tablets, laptops and other devices can also enjoy 5g high-speed network speed.

The product name, model and other information are printed on the bottom of the fuselage, and it has passed CE certification and 3C certification.

The top is equipped with 1a1c two interfaces, supporting the maximum 40W wired input and 18W or 22.5w output, with the battery capacity of 8000mah. In addition, it supports reverse wired / wireless charging.

The output protocol of usb-a port is detected by using chargerlab power-z kt001, and DCP, qc2.0 and FCP protocols are supported.

In addition, through the voltage decoy operation, choose the Huawei SCP option, the a port can be output at 5V.

Port a supports Huawei FCP protocol.

Port a supports Huawei SSCP protocol.

No output protocol supported by usb-c port is detected by using this table.

The net weight of the product is about 281g.

2、 Huawei 5g accompanies WiFi Pro disassembly

Remove the top surface shell of the fuselage. The shell is full of small fixed columns and snaps. The two sides of the fuselage are also pasted with black double-sided adhesive stickers. The product is packaged firmly.

The LCD display is placed in a plastic slot.

A wireless charging coil is placed in the center of the fuselage, and the coil is tightly wound.

A metal copper foil sticker is pasted near the wireless charging coil.

The core solder joints are full and the workmanship is solid.

The shell on the other side is also removed, and a groove is designed in the center of the black plastic plate to place the electric core.

Foam is pasted on the body shell corresponding to the position of the electric core to protect the electric core.

There are four antennas 1, 2, 3 and 4 on both ends of the plastic plate, and there are fixing screws in the round holes.

The number 1 sticker antenna is printed with sx05mim01.

sticker no .2 antenna printed with SX11M2HB B32 words.

Sx03b32 is printed on the antenna of No. 3 sticker.

4 sticker antenna printed with SX09M2LB words.

Close up of Li-ion polymer cell with relevant parameter information printed on the sticker

Model: hb896487ecw

Rated capacity: 780mah / 29.79wh

Typical capacity: 8000mah / 30.56wh

Rated voltage: 3.82v

Charging limit voltage: 4.4V

The battery was produced on November 4, 19 and has passed CE certification, GOST-R certification, PSE certification and KC certification.

Close up of the other side of the cell, ATL battery, 4.3mm thick, 63mm wide, 83mm long, with a voltage sharing of 3.82v.

Remove the screws and take out the plastic plate. The middle plate is made of aluminum alloy metal. The two sides are injection molded. All the chips on the bottom PCB are covered with shielding covers, and graphite heat conduction stickers are pasted for heat dissipation.

The electric core is connected with the PCB through this cable.

In the center of PCB board are three large shielding covers, which are pasted with black heat conduction stickers, and both ends of the board are also provided with a and B patch antennas.

Sx11man is printed on antenna a.

Sx07sub is printed on antenna B.

Remove the metal shield on the PCB, and some chips are pasted with heat conducting pads to help heat conduction.

Two NMOS tubes close to usb-a port for interface switching, psmn4r2-30mld, from Nexperia.

There are also four MOS tubes in the shield.

Huawei Hisilicon hi6422 PMIC.

Shengbang micro sgm66055 boost IC, 2.2MHz working frequency, ultra-low static current, synchronous rectifier boost, 5V fixed output, built-in switch tube, wlcsp1.21mm ultra small package.

Shengbang micro sgm66055 details.

Huawei Hisilicon hi6526 PMIC.

Huawei Hisilicon hi6421 PMIC.

Screen printing 6563g.

MXIC wanghong mx30uf4g18ab, 4GBIT SLC flash memory, used for storage system and firmware.

Wang Hong mx30uf4g18ab data information.

Huawei Hisilicon hi9500 Baron 5000 5g SOC, the internal PCB area of WiFi terminal is sufficient, and pop laminated packaging inside the mobile phone is not used, so the cost is controlled, and the memory is independently welded on the left side. Baron 5000 5g multi-mode chip supports two networking architectures NSA and SA. This 5g wireless terminal supports 1.65gbps USB3.0 type-C connection theoretical peak speed and 867mbps WiFi connection theoretical peak speed, so that non 5g mobile phones, tablets and laptops can also enjoy 5g high speed.

Sk Hynix Hynix h9hcnnnbkmal, lpddr4 memory.

Silk screen 6h11 and 6h12 chips.

Huawei Hisilicon hi6365 RF transceiver.

Four small chips.

Screen printing 13h9.

Cut the shielding cover at the edge, and the wireless charging main control and charging power tube are inside.

Set up rt3181c data and information.

Four psmn4r2-30mld, from Nexperia, NMOS tube, for wireless charging power output.

Front view of PCB.

Take apart the metal shielding cover next to it. There are three large chips in it.

The integrated usb-pd and bi-directional PWM buck boost controller rt7885 are integrated with USB PD protocol recognition and MCU in addition to the function of voltage rise and fall control. The integration is high and the number of external components can be reduced. At the same time, the built-in charge pump of Likai rt7885 can drive low-cost NMOS and support 1 to 4 strings of lithium battery charging, which is very suitable for mobile power supply.

RT7885 information.

The other two chips are also from Li'an, model rt9612b, synchronous rectifier and step-down half bridge driver, and are used for wireless charging power level MOS transistor driver with wireless charging master control rt3181c.

Set up rt9612b data information.

Four white NPO resonant capacitors.

The chip on the front of the board is also covered with a metal shell.

Huawei Hisilicon hi1151 wireless control chip is used to convert 5g signal into WiFi hotspot connection.

Close up of LCD display cable arrangement.

The outer jacket of the C-Port female seat is reinforced by a metal shell, and the metal shell is printed with e9asa.

The slot of SIM card is welded, and 985b is printed on the metal shell.

Silk screen 2HZ.

All disassembled, a family photo.

Disassembly summary of charging head network

According to the disassembly of charging head network, Huawei Hisilicon hi9500 Baron 5000 5g SOC core chip is installed inside the machine, and hi6421 / hi6422 / hi6526 PMIC, hi1151 wireless control chip and hi6365 RF transceiver are used. In addition, Hynix and wanghong memory chips, as well as Li Kai wireless charging solution are also used.

All the chips on the sub circuit board of the machine are covered with a metal shield to avoid interference. The main heating chip is also pasted with a heat conducting pad to help heat conduction; the electric core is placed in the groove, and the groove area is made of aluminum alloy to help the electric core to dissipate heat; the wireless charging coil is tightly wound and the wire core is firmly welded. The overall workmanship of this product is excellent.

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