Smart speakers are one of the more frequently used audio devices in young people's daily lives, which can be used to listen to music, listen to audio books, play games, weather schedule broadcast and smart home control. In the children's market, smart speakers also have a wide range of application scenarios, mainly playing a role in edutainment, giving children companionship, helping children expand their knowledge and cultivate hobbies.
As the head brand of the current smart speaker market, Xiaomi has a rich product line and complete supporting services. In April 2023, Xiaomi Xiaoai speaker once again expanded the user base and launched the first smart speaker designed for children aged 3-6, providing children with an intelligent companion through childlike design, portable experience, massive resources and children's Xiaoai voice assistant.
Xiaomi Xiaoai Speaker Children's Edition is equipped with dual speakers, supports WiFi and Bluetooth connections, and supports 10 hours of battery life. In terms of content, it supports in-depth cooperation with popular platforms such as QQ Music, NetEase Cloud Music, Himalaya, and Dragonfly FM, built-in 1000+ episodes of Uncle Kai stories, provides massive audio content, covering music, stories, children's songs, English, Chinese Studies and many other fields, and recommends age-appropriate listening lists for children aged 3, 4, 5 and 6 years old.
Xiaomi Xiaoai Speaker The children's version has a built-in customized version of "Xiaoai classmates" for preschool children, which is optimized for the characteristics of children's voice and words, and accurately identifies children's voices. Support riddles, number guessing, word solitaire, voice interaction and many other interesting games, support knowledge quizzes, answer content green filtering. Xiaomi Xiaoai Speaker The children's version also supports the creative microphone function, children can leave messages with one click, and parents can listen to and interact with voice messages in the Xiaoai Speaker App. Let's take a look at the disassembly report of this product~
First, Xiaomi Xiaoai speaker children's version unpacked
Xiaomi Xiaoai Speaker The children's version of the packaging box adopts a new design different from other series, with a beige background, the front display of the appearance of the speaker, the "MI" brand LOGO and product name, as well as cute shape, boutique content and children's love three product features.
The back of the box describes the product parameters, company information, and warnings. Product model: K03A, rated input: 5V-1.5A, main material: ABS, applicable age: 3 years old and above, battery capacity: 2600mAh (typical), wireless connection: Wi-Fi lEEE 802.11 b/g/n 2.4GHz, Bluetooth version 5.2;
The contents of the box include speakers, charging cables, lanyards and product manuals, and 4 emoji stickers are included, which can be freely combined with DIY speaker expressions.
Speaker charging cable, using USB-A to Type-C interface.
Speaker portable lanyard, elastic silicone material.
Xiaomi Xiaoai Speaker Children's Edition adopts a bionic pet appearance design, rounded and square appearance, with two ears and tail, very cute. The overall size is also very small, making it easy for children to reach. The fuselage is made of ABS thickened material, which is anti-fall and anti-fall in daily life. The speaker has obtained children's sound and light toy certification, which is more secure to use.
The front of the speaker is set with rounded square ambient lights and microphone pickup holes, and the middle is used for DIY expressions to enhance the fun.
The back of the fuselage has a cute round tail design, which also serves as a stand. The top of the fuselage is designed with a lanyard hole for connecting the portable lanyard, and the voice button and charging interface are set in the middle, and the printed parameter information is consistent with the outer box.
Close-up of the round tail, which is also a power switch button and a volume adjustment knob.
The voice buttons on the back of the fuselage are used to turn on/off the microphone, voice message, play prompts/fun sound effects and other function control.
A close-up of the Type-C charging interface on the back of the fuselage, and an indicator light on the top for feedback on the charging status.
The round ears on the top of the fuselage are also knob buttons, which can be controlled by rotating and pressing to achieve networking, pause/play, up/down song switching, switching category list, up/down album and other functions.
The appearance of the right side of the fuselage is at a glance, and the speaker outlet hole is set.
There are also speaker outlets on the left side of the fuselage, and the two sound holes correspond to symmetrical double-sided speakers.
According to the actual test of I love audio network, the Xiaomi Xiaoai Speaker Children's Edition weighs only 210.6g, which is very light.
I love audio network uses chargerlab power-z KM003C to charge the Xiaomi Xiaoai Speaker Children's Version, and the input power is about 4.49W.
Second, Xiaomi Xiaoai speaker children's version disassembled
By opening the box, we learned in detail about the cute pet children's appearance design of Xiaomi Xiaoai speaker children's version, let's enter the disassembly section below to see the internal structure configuration information~
Remove the speaker panel, set a transparent cover underneath, fixed by four screws, and at the same time play the role of light guide.
The inner structure of the cover plate is at a glance, and the microphone opening is protected by a fine dust screen.
Remove the screws and remove the transparent cover.
Transparent cover structure at a glance.
The structure of the main board unit inside the cavity is fixed by a screw, and is equipped with 8 LED lamp beads and 2 microphones.
Remove the screws, unplug all connectors, and remove the motherboard unit.
The speaker cavity structure is fixed under the motherboard by screws.
Overview of circuitry on the side of the motherboard.
The circuit on the other side of the motherboard is at a glance, and there are 6 socket connectors on the edge to connect other components.
Close-up of the MEMS microphone of the radium engraving QR code, two microphones form a pickup array, which is used for voice assistants, creative microphones and other functional miking.
Close-up of Bluetooth antenna for wireless signal transmission.
Close-up of coaxial socket connected to WiFi antenna.
Connect the wire socket of the "ear" knob button small board.
Close-up of the wire socket connecting the power input board.
TVS protection tube with silkscreen T12 003 for input overvoltage protection.
Screen 01丨123Y overvoltage overcurrent protection IC.
BES Hengxuan BES2600WPD WiFi Bluetooth fully integrated audio SoC, supports dual-band WiFi and Bluetooth 5.2, with powerful audio and application processing capabilities.
According to the dismantling of My Love Audio Network, at present, OPPO, Xiaomi, Samsung, vivo, honor, Redmi, IQOO, iFLYTEK, Barbetsound, JBL, Wanmo, Baidu, OnePlus, Transsion and many other brands of true wireless headphones have adopted BES Hengxuan solutions.
24.000MHz crystal close-up to clock the WiFi Bluetooth fully integrated audio SoC.
Silkscreen CWWO AAJO's IC.
Silkscreen AMB's IC.
Connect the cable socket to the speaker.
Close-up of the wire socket connecting the "tail" knob button.
Chipstar is a fixed 10x gain, dual-bridge audio power amplifier CS85636SA chip that operates from a 5.0V supply and delivers 3.1W of continuous power into a 4Ω load when THD+N equals 10%. In addition, when the stereoscopic headphones are connected, the chip can drive the stereoscopic headphones in single-ended working mode.
CS85636SA dual-channel audio power amplifier is designed for systems that require high-quality audio power output, using surface-mount technology to enable high-quality audio output power with only a few peripheral components. CS85636SA the dual-channel design makes the chip have two working modes: bridge connection speaker amplification and single-terminal stereo headphone amplification, which simplifies the peripheral circuit design of the audio system.
CS85636SA built-in low-power standby circuit and overtemperature protection circuit, while built-in noise cancellation circuit can eliminate clicks or crackles during chip startup and shutdown. In order to make it easier for the system to pass EMI detection, CS85636SA uses proprietary AERC (Adaptive Edge Rate Control) technology to greatly reduce EMI interference over the full bandwidth of the audio.
Chipstar Detailed CS85636SA Information Graphic.
Close-up of the wire socket connecting the battery.
SGMICRO SGM4917 stereo headphone amplifier with built-in charge pump eliminates the need for external DC blocking capacitors, saving cost, board space and component height. SGM4917 delivers up to 80mW per channel into a 32Ω load with a low THD+N of 0.02%.
SGMICRO SGM4917 detailed infographic.
Power management chip for silkscreen 65P 36153.
Power management chip peripheral inductors.
Another wire socket for connecting the speakers.
Built-in TF card close-up, capacity 32GB, internal storage of Uncle Kai custom story 6 boutique content.
Remove the screws and remove the front cover of the speaker.
The internal structure of the cavity is at a glance, and the components are fixed by a yellow frame.
Remove the battery cells from the frame.
Speaker built-in lithium-ion battery model: INR 18650, rated capacity: 2600mAh, rated power: 9.62Wh, nominal voltage: 3.7V, charging limit voltage: 4.2V, manufacturer: Luhua Electronic Technology (Shanwei) Co., Ltd., made in China.
Tear off the external insulation protection of the battery, and the silk screen printing parameter information on the internal cell is consistent with the external label.
A glance of the circuit on one side of the battery protection board, soldered to the wire.
There are no components set on the back of the battery protection board.
The lithium battery protection IC of silkscreen DW01k is responsible for the protection of overcharge, overdischarge and overcurrent of the battery.
Two silkscreen 8205A MOS tubes work with lithium battery protection IC.
Close-up of the wire socket where the battery is connected to the motherboard.
Remove the inner frame of the cavity.
The frame structure is at a glance, with two speakers on both sides and a knob button board on the top.
Remove the "ear" knob button pad and open the chamber cover on one side.
The inner structure of the speaker outlet cover is at a glance, and a sponge pad is provided to cushion and prevent shocks.
The "ear" knob button is a glance at the circuit on the side of the board.
A glance of circuits on the other side of the board.
Close-up of the knob key encoder, both with the same specifications.
The small board is connected to the wire connecting to the motherboard through the socket.
Close-up of the plug of the wire connection motherboard.
The speaker structure on the side of the frame is at a glance, fixed by screws.
Remove the screws and remove the speakers.
A glance of the internal structure of the sound chamber.
Close-up of the front of the speaker, oval diaphragm.
Close-up of the back of the speaker, silkscreen parameter impedance: 4Ω, power: 2W.
The speaker is compared to the size of a dollar coin.
According to the actual measurement of My Love Audio Network, the short diameter of the speaker is about 28.62mm.
The speaker length diameter is about 40.30mm.
Close-up of the plug where the speaker leads are connected to the motherboard.
The internal structure of the rear cavity is also fixed with a power input board, a "tail" knob button board, and a WiFi antenna.
A WiFi antenna fixed to the wall of the cavity.
Close-up of the coaxial plug of the WiFi antenna connected to the motherboard.
Remove the screws and remove the power input board and the "tail" knob button board.
Overview of circuits on the side of the power input board.
Overview of circuits on the other side of the power input board.
Close-up of Type-C charging mother.
Type-C port is used to input TVS tubes for overvoltage protection.
RGB LED indicator for feedback on charging status.
Voice button close-up, patch welding.
Close-up of the socket connector of the small board connecting the wire.
Close-up of the plug of the wire connection motherboard.
"Tail" knob button small board side circuit overview.
A glance of circuits on the other side of the board.
Close-up of the knob key encoder, silkscreen model "B50K".
Close-up of the receptacle connector connecting the motherboard wires to the small board.
Close-up of the plug where the lead is connected to the motherboard.
Xiaomi Xiaoai Speaker Children's Edition Disassemble family portraits.
Third, I love audio network summary
Xiaomi Xiaoai Speaker Children's Edition In terms of appearance design, the rounded body has no edges and corners, and the volume is very small and light, which is easy for children to reach. Bionic pet appearance design, with DIY emoji stickers, fun and cute, more able to attract children's attention; At the same time, the round "ears" and "tail" are also integrated with various adjustment and control functions, supporting rotation and pressing, which is convenient to use; Symmetrical double-sided speakers allow children to experience good sound in any direction.
In terms of internal structure configuration, the components are connected through sockets, mainly including the motherboard, power input board, two knob button boards, speakers and battery units. Built-in Luhua Electronics 18650 cylindrical lithium battery, capacity 2600mAh, equipped with circuit protection board responsible for charge and discharge protection; The dual speakers have an oval diaphragm and measure about 40.30mm x 28.62mm, and a single speaker supports 2W output power.
On the main board of the speaker, 2 MEMS microphones are equipped with sound pickup, and 8 LED lamp beads provide light source for the panel ambient light; It adopts BES Hengxuan BES2600WPD WiFi Bluetooth fully integrated audio SoC, supports dual-band WiFi and Bluetooth 5.2, with powerful audio and application processing capabilities, as well as Chipstar Xinwei CS85636SA Class D audio amplifier and SGMICRO Shengbang Micro SGM4917 stereo headphone amplifier for speaker driver and so on.