in the light ofTeslaThe electric vehicle has only two USB-C output interfaces,BeisiA special docking station has been launched. This docking station expands the two USB-C interfaces of the original vehicle into 2C2A output, and one USB-C interface is designed with a 1m long expansion cable, which supports45WPower output.
Two USB-A ports support 12W charging, and one USB-C port supports 30W charging. It also supports data transmission for easy expansion.The docking station fits the interior design of the car body, and the integration is not abrupt.It is brought by the charging head network belowBeisiThisTeslaDisassemble the special docking station to see the internal design and materials.
Baseus brand, product name, appearance and two product characteristics are printed on the front of the packaging box.
The back is printed with product parameters and business information in many languages, and the bottom is also printed with product related certification.
A close-up of the parameters of the Chinese version of the product will be introduced in detail in the physical link below.
Included in the packageBeisiT-Space expansion dock, instruction manual, installation procedure manual, San Bao certificate and cartoon sticker.
BeisiThe T-Space expansion dock adopts 3D scanning mold opening, and the corners of the assembly are perfectly fitted to the original vehicle, which looks beautiful and does not affect the opening and closing of the storage box.
The main body of the docking station is made of ABS+PC fireproof plastic shell, with star black color matching, and the surface is sanded.
There are two USB-C input cables at the bottom of the fuselage.
The cable head and USB-C male head are designed with 90 ° bending, which is convenient for connection and better fitting and anti falling.
The connection between the cable and the bottom of the machine body is provided with a rubber sleeve for bending protection.
Product parameter information is printed on the back of the fuselage
Model: BS-TS002
Type-C1 input: 9V3A
Type-C2 input: 9V3A
Type-C stretching line output: 5V3A, 9V3A, 12V3A, 15V3A, 20V2.25A45WMAX
The product has passed CE, FCC and UKCA certification.
Both sides of the body are equipped with silicone corner protectors, which can increase resistance and improve stability, while avoiding scratching the storage box.
Close up of silicone corner protector at the end corner.
The top step type is equipped with a sliding deep space gray metal plate.
The top center is also equipped with Bess brand.
Three USB interfaces of 2A1C and stretchable output cable are hidden under the dust-proof panel.
The three USB interfaces all use orange rubber core, and there is an indicator light beside the USB-C interface.
The area where the output cable is located is concave, which is convenient for hiding when the cable is stored. There is also a storage hole for USB-C to Lighting adapter on the right. When the adapter is not in use, it can be inserted into the storage hole to avoid loss.
The shell of the stretching thread head is made of metal, and the magnetic suction design in the transverse area of the thread head is shown in the figure. The thread head is naturally adsorbed and transversely placed in the storage state, so the user does not need to deliberately press it, which is convenient, clean and beautiful.
When the rear passengers need to charge, they can pull out the cable for use.
The drawing thread head is printed on the metal shell45WWords indicating that the cable can support at most45WOutput.
The product is also equipped with a USB-C to Lighting adapter, so that both Android phones and Apple phones can use it.
The lighting terminal of adapter measured with ChargeLAB POWER-Z MF001 is not original.
The measured length of the two USB-C input cables of this docking station is about 16cm.
The docking station body height is about 103.86mm.
The width is 193.89mm.
The thickness of the top of the fuselage is 47.75mm.
The stretching line is about 1m long.
Finally, the total weight of this docking station is about 313g.
When the power is on, the indicator light near the USB-C port lights blue.
The stretch line output measured with ChargeLAB POWER-Z KM003C supports the charging protocols of FCP, SCP, AFC, QC3.0, PD3.0, DCP, SAM 2A, and Apple 2.4A.
PDO message display also has five groups of fixed voltage gears: 5V3A, 9V3A, 12V3A, 15V3A, 20V2.25A.
It is measured that the USB-C interface on the fuselage supports PD3.0, DCP, SAM 2A and Apple 2.4A charging protocols.
PDO message shows that the USB-C interface has three sets of fixed voltage gears: 5V3A, 9V2.22A and 12V1.67A.
In addition, it is measured that the USB-A interface supports DCP, SAM 2A and Apple 2.4A charging protocols.
The compatibility protocol of the other USB-A port is the same.
Disassembly of Beisi T-Space expansion dock
After seeing the unpacking and testing of Beisi's docking station, let's take a look at the design and materials of this docking station.
First pry off the cover of the docking station, and the internal USB-C input line and USB-C expansion line are connected by USB-C female.
The USB-C expansion line mechanism is fixed with orange plastic plates and screws.
The input and output wires are connected through the USB-C socket.
Close up of orange plastic cover plate fixing USB-C cable telescopic mechanism.
Disassemble and take out the internal cable expansion mechanism, USB-C fast charging panel and dust cover plate.
Positioning of fixed magnets inside the dust cover plate.
Close up of sliding ball inside the cover plate.
USB-C expansion line is decorated with orange plastic ring.
A close-up of the interior of the docking station panel. On the left is the PCBA module, which is fixed by screws.
Close up of positioning magnet for adsorption on the right.
The PCBA module is fixed by screws, and three USB-C mother seats are welded on the module.
Disassemble and take out PCBA module, and continue disassembly.
The front of the PCBA module is welded with two synchronous voltage rise and fall circuits for two USB-C interface outputs, one voltage drop circuit for two USB-A outputs, three magnetic ring inductors and corresponding filter capacitors.
The back of the PCBA module is welded with three USB-C female sockets, two fast charge power access chips and one protocol chip.
Close up of three USB-C mother seats for internal connection, orange rubber core, fixed by via welding.
Two PD power receiving chips are from Huinengtai, model HUSB238, corresponding to two USB-C inputs respectively. HUSB238 is a highly integrated USB PD power receiving terminal chip (PD Sink, also called PD decoy chip).The transmitted rated power can reach 100W.It is compatible with PD3.0 V1.3 and Type-C V1.4.It can also support BC1.2 DCP, CDP, SDP and Apple 5V2.4A charging protocols.The general PD adapter can be used instead of the traditional DC power supply.
Two PMOS tubes with silk screen 3419 are used for power supply control.
The SW3203 adopts QFN-24 4x4mm package, with built-in I2C interface, which supports input overvoltage protection, output overvoltage protection, output overcurrent protection, output short circuit protection, inductance peak current limiting protection, and over temperature protection.It can be used in car charger, adapter, docking station, USB socket, industrial equipment, electronic cigarette and other fields.
The four MOS tubes used for synchronous voltage rise and fall are from Jieli Technology, model EMB04N03HR, NMOS, withstand voltage 30V, conductivity 4m Ω, and sealed with EDFN5 * 6.
Synchronous voltage rise and fall inductance adopts magnetic ring winding.
The input filter capacitor specification is 220 μ F 16V.
The output filter capacitor is from Shengtong, and the specification is 100 μ F 35V.
The protocol chip used by USB-C expansion line is Zhirong SW2303, which is a highly integrated multi protocol fast charging solution. It supports USB-C and USB-A port applications, mainstream fast charging protocols such as PD, QC, FCP, high and low voltage SCP, AFC, SFPP and PE, and supports optocoupler feedback and FB feedback.
SW2303 integrates CV/CC control loop, Type-C interface logic, fast charging protocol controller, and various safety protection functions.Cooperate with AC-DC or DC-DC and a few peripheral components to form a complete high-performance Type-C/Type-A fast charging solution.
SW2303 also supports I2C interface, internal integrated discharge function, NMOS/PMOS VBUS switch tube, and dynamic power distribution to meet the use of multi port charger.The chip supports external NTC for overheating protection to achieve comprehensive protection functions.
The synchronous voltage rise and fall converter for USB-C interface is from Nanxin Technology, model SC8723, which is an efficient synchronous 3.5A step-down and step-up converter with four integrated MOSFETs.Whether the output voltage is high, low or equal to the input voltage, it can provide efficient power supply efficiency and stable voltage regulation.
The SC8723 supports a very wide range of input and output voltages.The input voltage range can reach 2.7V to 22V, the output voltage range can reach 3V to 22V, and the maximum output current of 3.5A is supported.The SC8723 uses average current mode control.The output voltage is regulated by the resistance on the FB pin.The chip operating mode (PSM/FPWM) and switching frequency can be adjusted through external settings.
The chip also provides programmable output current limitation, which flexibly supports different applications.SC8723 supports internal current limiting, input undervoltage protection, output overvoltage protection, output short circuit protection, FB short circuit protection, and over temperature protection to ensure safety under different abnormal conditions.
Nanxin SC8723 adopts 22pin 3x3 QFN packaging, which is mainly used in Type-C expansion dock, mobile power supply with fast charging function, wireless charging, wall adapter, industrial power supply, etc.
Close up of the voltage rise/drop inductor and input/output filter capacitor used together.
The protocol chip is the same as the USB-C expansion line, which is the smart finance technology SW2303.
VBUS switch tube screen printing B4052.
Close up of chip LED power indicator.
The step-down converter used for the two USB-A ports is from Chengxin Micro, model CX8855. It is a step-down DC-DC converter with input withstand voltage up to 32V, and can achieve accurate constant voltage and constant current.Built in 30m Ω High side PMOS and 20m Ω Low side NMOS can support 3.4A continuous output current and adjustable output voltage, and can support 100% duty cycle at most.
The step-down inductance used together is insulated with heat shrink tube.
Close up of current sampling resistance and MOS tube used for output current detection of USB-A port.
The identification chip used for automatic identification of USB-A port is from micro source semiconductor, which is screen printed with 10Dm8.
The input filter capacitor specification is 220 μ F 16V.
Core Sea Technology CS32L010F8 is a 32-bit low-power MCU with M0 core. The maximum operating frequency is 24MHz. It has a built-in 64KB FLASH memory and 4KB SRAM. It is packaged with QFN20 for the control of the whole machine function.
The 7533 voltage stabilizing chip is used to supply power to MCU.
The USB-C mother seat is fixed by via welding, and the orange rubber core does not expose copper.
The USB-A mother seat also adopts orange rubber core, and the positive and negative poles are widened.
Finally, the disassembly of the USB-C cable expansion mechanism is designed for the extension cable.
The USB-C cable expansion mechanism is connected to the PCBA module by welding the USB-C plug.
The shell is fixed with snap.
Open the shell, and the internal USB-C wire is wound on the internal spool.
The black spool fixing spring contacts with the PCB slip ring for power supply.
Close up of slip ring PCB. The wider rings inside and outside correspond to the positive and negative poles, and the three narrower rings in the middle correspond to USB and CC lines.
A PCB is also fixed on the spool, and power is obtained through welding connection.
Close up of the brush used to access power.
Take a look at all of them and have a family photo.
Disassembly summary of charging head network
This model launched by BeisiTeslaThe special docking station expands the two USB-C interfaces of the original vehicle to 2C2A output, and retains the data transmission function.At the same time, it is also equipped with a 1m long USB-C expansion line, which supports45WPower, easy to charge the laptop, very convenient to use, and also equipped with a USB-C to Lightning converter, easy to use Apple mobile phone fast charging.
Through disassembly, the charging head network learned that Huinengtai HUSB238 power access chip is built in this docking station for power supply of two PD inputs.Built in two synchronous voltage rise and fall circuits and one step-down circuit are used for power supply of two USB-C and two USB-A ports respectively.The USB-A port is powered by the Chengxin micro CX8855 step-down converter, and the whole machine is controlled by the Core Sea Technology CS32L010F8 MCU.One USB-C output power is 30W, and Nanxin Technology SC8723 voltage rise and fall converter is used with Zhirong Technology SW2303 protocol chip.
The other USB-C synchronous voltage rise and fall circuit with output power of 45W adopts Zhirong Technology SW3203 synchronous voltage rise and fall controller and SW2303 protocol chip.This docking station has comprehensive functions, which greatly alleviates the power consumption anxiety caused by the two USB-C ports, and brings users a better use experience.