Preface
Huawei Smart Select and LiBode launched a smart sound wave toothbrush 2Pro. This toothbrush combines multiple functions and has a built-in high-precision pressure sensing chip for reminding too much brushing. It can shake through the toothbrush itself, flashing the red light of the body and APP prompts. The built-in six-axis gyroscope chip of the fuselage can detect the brushing posture and adopt pressure-sensitive buttons to support anti-fault touch function.
toothbrush also supports wireless charging function, has a built-in 1800mAh large-capacity battery, supports the use of the Hongmeng Zhilian APP, understand the brushing status in real time, and protects teeth health. Let’s disassemble this electric toothbrush for Libode to see the internal structure.
Huawei Smart Selection Liboo Intelligent Sound Wave Toothbrush 2Pro Unboxing
Huawei Smart Selection Liboo Intelligent Sound Wave Toothbrush 2Pro Set and the additional brush head are packaged in large and small packaging boxes respectively. The front of the box is printed with Lebooo Liboo brand, HarmonyOS Connect, product name and appearance diagram. The brush heads of
small packaging box are packed with plastic bags to protect against dust.
large packaging box is printed with a pressure control protection system, ultra-micro-small bubble cleaning technology, streaming technology, and touch-up response, 180-day long battery life, specialized in whitening brush head, Hongmeng Zhilian real-time monitoring and perception of six major selling points and product parameter information. The manufacturer is Dongguan Libode Electronic Technology Co., Ltd.
large packaging box contains the toothbrush body, brush head, induction charging base, portable box and instruction manual.
comes with a portable box that is very friendly to business people who often want to travel around the world. The box has a main body and a brush head fixing slot.
inductive charging base comes with USB-A cable. The body adopts a double-layer shell design. The outer layer is bright and transparent. The slot shape fits the main body design, like a "round triangle". It needs to be aligned before insertion is performed.
base name is Libode Intelligent Sound Wave Toothbrush 2Pro · Charging Dock, model LBT-183501A, rated input 5V1A, IPX7 waterproof level.
The USB-A cable length included in the base was measured to be about 75cm.
Huawei Smart Select Libode Smart Sound Wave Toothbrush 2Pro uses a starry night black color scheme, the front shell is bright, and has a considerable detail design. With the "round triangle" shape, the overall appearance and holding feel are very good.
There is a Touch pressure-sensitive button in the concave area of the upper end of the front of the body, so intelligent sensing can effectively avoid accidentally touching and turning on.
In addition, the main body also adopts a new streaming technology design, breaking the tradition and bringing a new interactive experience, and winning the 2022 IF Design Award.
has corresponding working modes, namely soft protection mode, cleaning mode, teeth brightening mode and personalized mode. You can choose by connecting to the Smart Life APP, which is intuitive and clear and simple to operate.
top output shaft sleeve is protected by transparent plastic shell.
has a touch sensing area sticker on the side.
The back of the main body adopts a skin-friendly coating process, which has a good touch feel.
has the Hongmeng Zhilian logo printed on the upper side of the back. The product parameter information is printed on the bottom of
. The model and rated input are the same as those on the base. IPX7 waterproof level.
Huawei Smart Selection Libode Intelligent Sound Wave Toothbrush 2Pro body after installing the brush head.
toothbrush holding scene list.
It was measured that the end-to-end length of the toothbrush body was about 19cm.
body diameter is 27.15mm. The weight of the main body of
is about 124g after installing the brush head.
When the charge state is in charge, the indicator light is red and the indicator light is green to indicate the battery is fully charged.
In addition, ChargerLAB POWER-Z KT002 was used to measure the input power during wireless charging to be 5.1V 0.49A 2.49W.
Huawei Smart Selection Libode Intelligent Sound Wave Toothbrush 2Pro Disassembly
After watching the appearance display and charging test of this electric toothbrush, let’s disassemble it below and see the internal structure of the toothbrush.
toothbrush wireless charging base jacket with gray plastic shell decoration.
Remove the back cover of the wireless charging base, and fill it with a white glue seal inside the base.
Clean out the white glue , and inside the glue suck are wireless charging PCB, magnetic disc and wireless charging coil. Close-up of wireless charging PCB inside
glue filling.
USB DC input soldered to connect to the PCB.
wireless charging PCB close-up, front soldering resonant capacitor, wireless charging chip and input protection components. The back of
is a large area of exposed copper and stencil to enhance heat dissipation ability.
input end screen printed mAEOC protection chip is used for overvoltage and overcurrent protection of the USB-A interface input.
wireless charging module is soldered with a silk-print 8510 wireless charging chip. The actual model is CPS8510, from Yi Chong. It is an ultra-simplified single-chip wireless charging transmitter chip. The internal integrated rate of the chip is full-bridge circuit, wireless charging master control and demodulation circuit, etc. It is a QFN2*3-12 package, supports 5V input voltage, and meets the needs of low-power wireless charging.
Easy to knock CPS8510 Detailed information.
In this toothbrush, the easy-to-burn CPS8510 wireless charging transmitting chip is used with the CPS4510 wireless charging receiving chip for wireless charging and lithium battery charging. The peripheral components of both chips are very simple, greatly simplifying the development difficulty and material cost.
A MOS tube is used for delayed start control.
NPO resonant capacitors are connected in parallel.
wireless charging coil is wound with Leeds wire.
Next, disassemble the toothbrush and first pry off the bottom sealing cover.
sealing cover is fixed by snapping, and the sealing ring is fixed on the cover to prevent water from entering the toothbrush.
Take out the toothbrush movement, and the bottom is a wireless charging coil.
toothbrush movement frontal list.
PCB and the bracket are wound with tape.
side contact detection bar and indicator light.
back you can see the 18650 battery and buffering foam glue strips.
toothbrush PCB front list, soldering pressure sensor front-end chip, battery protection chip, ADCh, memory, gyroscope, Bluetooth SOC and wireless charging circuit.
PCB back faces the corresponding pressure sensor window.
top output shaft is sealed with a black rubber bowl. The top cable of
is connected to the pressure sensing chip. When it is detected that the brushing force is too strong, the user is reminded. Close-up of the cable socket connecting the pressure sensing chip to the cable socket.
The detection chip used for pressure sensing and pressure sensing touch comes from Xinhai Technology, model CSU18M68, supports two working modes: simulated front-end mode and MCU, has dual-channel pressure sensing measurement, built-in 16-bit ADC, temperature sensor and I2C interface, and can be used in smartphones, wearable devices, laptops, and industrial applications.
Xinhai Technology CSU18M68 Detailed information.
rubber cap for pressure-sensitive button operation.
is a pressure sensing detection sensor under the rubber cap. One circle outside the pressure sensing detection sensor is a capacitor detection. Only when the human body touch is detected will it respond to the pressure sensing signal.
pressure sensing detection sensor is connected to Xinhai Technology CSU18M68 for key detection through a via.
touch detection chip comes from Kexinda Electronics, model is KXD083, used to detect the pressure-sensitive button of the human finger pressing, and turn on the toothbrush to meet the conditions.
Below the pressure-sensitive button is the driver chip of the silk screen 8310, which is used to drive the sound wave motor, and the solder joints on both sides are glued and reinforced.
is connected to the battery negative electrode of the lithium battery protection chip, silk-print DW03D, for overcharging, overdischarge and overcurrent protection of the built-in battery.
toothbrush has a built-in ADC chip of Xinhai, model CS1237, and is a high-precision 24-bit ADC with a built-in temperature sensor and a high-precision oscillator, which supports configuration through the SPI interface, configuration channel, PGA selection and output rate selection, etc.
Xinhai Technology CS1237 Detailed information.
4C256A memory, with a capacity of 256Kb, is used to store configuration information. The gyroscope inside the toothbrush comes from TDK, model ICM-42670, is a high-performance six-axis motion tracking sensor with a built-in three-axis gyroscope and three-axis accelerometer.
toothbrush has a built-in Bluetooth SOC chip, from Nordic, model nRF52810, used to connect toothbrush to APP through Bluetooth and detect the toothbrush status.
external 32.000MHZ clock crystal oscillator close-up.
The cable holder at the bottom of the toothbrush is connected to the RGB LED light.
Light board welding joint close-up.
RGB LED light close-up.
cable is connected to the RGB LED light board on the other side. Close-up of the touch bars arranged side by side with
and the lamp board are used to detect human touch operations.
wireless charging chip comes from Yi Chong Wireless, model CPS4510, is a lithium battery charging chip with wireless charging input. The chip integrates a wireless charging receiving circuit, a linear lithium battery charger and a battery protection circuit. The maximum output current is 0.5A, the charging current is adjustable, and supports battery overdischarge and overcurrent protection. The peripheral components are very simple.
Easy to knock CPS4510 Detailed information.
toothbrush is powered by a 16650 battery, with a rated capacity of 1800mAh and a rated voltage of 3.7V.
Finally, we will disassemble the magnetic suspension and constant movement of the toothbrush.
The fixed shrapnel of the internal output shaft of the toothbrush is fixed by screws.
Unscrew the screw and remove the output shaft.
internal stator and coil close-up, powered by PCB to control the output shaft movement. The side of the output shaft is a magnet.
output shaft paste the pressure sensing chip to detect the force of the toothbrush, and is used to remind the user when the force is too high. The connection cable is a wavy design, and the
pressure sensing chip is fixed to the output shaft through glue.
is fully disassembled, and a family photo is available.
Charging Head Network Disassembly Summary
Huawei Smart Selection and Libode launched this smart sound toothbrush 2Pro with a comprehensive function and has an AI voltage control protection system, which greatly improves the user experience. Built-in six-axis gyroscope chip, which can master the toothbrush posture and guide the brushing of teeth through the Hongmeng Zhilian APP. The toothbrush handle uses multiple RGB LED lights to achieve streaming effect, supports wireless charging, and uses pressure-sensitive buttons, bringing a different user experience. Through disassembly, the wireless charging solution built-in of this toothbrush comes from Yi Chong. It uses CPS8510 with CPS4510. Both chips are small-sized and highly integrated designs. Among them, CPS8510 is a single-chip wireless charging transmitter chip, which integrates all functions of wireless charging. CPS4510 is a single-chip wireless charging receiving chip, which integrates lithium battery charging inside the chip. It is used in lithium battery charging occasions without an external charging chip.
electric toothbrush also has a built-in Nordic nRF52810 Bluetooth SOC for APP connection, a built-in TDK gyroscope to detect brushing posture, a built-in 16650 battery, and is equipped with an independent protection chip for overvoltage, overcurrent and over-discharge protection. Built-in Xinhai Technology's pressure sensor chip for pressure sensing control and overvoltage detection. Easy-to-burn wireless charging solutions have the advantages of high integration and high reliability, making them easy to apply in electric toothbrushes or wearable devices, adding wireless charging function.
