Preface
The charging head network got the M2000 outdoor power station launched by the mobile family, this outdoor power station uses a quasi-solid-state battery, a single capacity of 2 kWh, a rated AC output power of 2kW, two outdoor power stations connected to 4 kWh, supporting 4kW power output. The outdoor power station has a built-in bidirectional inverter module and a built-in gallium nitride device to improve conversion efficiency and reduce heat generation. The outdoor power station has the function of battery preheating, and can be charged and discharged normally in an environment of minus 30 degrees.
The mobile M2000 outdoor power station is designed with an integrated alloy body, made of six-series aluminum alloy, and the internal inverter module dissipates heat through the body, and uses a fan to assist in heat dissipation. The input and output interfaces of the outdoor power station are equipped with protective covers, and have IP53 dustproof and waterproof rating. The AC input charging power is 1200W, which can fully charge the outdoor power supply in 2 hours, and supports solar charging and wind charging, the input power is 1000W, which can be fully charged in 2.5 hours, and it also supports on-board charging, which can be fully charged in 4 hours according to the different charging power.
In terms of fast charging output, there are two USB-C ports, which support 100W fast charging output, and two USB-A ports support 60W fast charging output, which are dual-channel independent. The other side panel is equipped with XT60 DC input interface, and also has a cigarette lighter and 5521 output interface, which is 12V DC output and has a total output power of 150W. The display panel supports battery percentage display, input and output power display, interface output status display, and LED lighting on the back of the fuselage. The following brings the dismantling of the mobile M2000 outdoor power supply, and let's take a look at the internal design and materials.
Appearance of the mobile ink M2000 outdoor power station
The main body of the M2000 outdoor power station adopts an integrated alloy body design, which has high strength and is more resistant to drops, and at the same time brings excellent heat dissipation performance. The surface of the shell is sandblasted for a delicate feel, and the front of the fuselage is printed with the Etaker brand.
The upper and lower parts of the fuselage are designed with handles and feet, and the bottom of the fuselage does not touch the ground, which can be better waterproof and moisture-proof, and supports IP53 dustproof and waterproof level.
There are rubber pads under the handles on both sides of the top to ensure that users do not scratch when grabbing and handling.
One end of the fuselage is equipped with a display, USB, DC and AC function output interfaces, and each function module is equipped with an independent on/off key control, which is more flexible, power-saving and safe. Each type of functional socket module area is equipped with a rubber protective cover to prevent dust and water, and the corresponding interface logo is printed at the same time, which is convenient for users to distinguish between uses.
The switch key is equipped with a light ring prompt, and it is clear at a glance whether it is turned off or not, and there is no need for blind guessing, and the details are in place. The USB function module is equipped with two USB-C 100W fast charging ports, two USB-A 60W fast charging ports and two USB-A standard charging ports.
From left to right, the DC function module is configured as solar/car charger/wind power input interface, 2*DC5521 interface and cigarette lighter. The M2000 power station supports a variety of charging modes, allowing users to charge outdoors without worries and completely solve the anxiety of electricity consumption.
In addition, it is also equipped with 3 sets of 3+2 new national standard AC output ports to meet the power needs of users for high-power electrical appliances.
The other end of the fuselage is equipped with three-color LED lights (white/yellow/warm white) to facilitate users to deal with different scenarios such as lighting, emergencies, and campfire parties.
The LED lights also have independent on/off key control, which can be turned off at any time, which is convenient for power saving. The middle area housing is printed with product parameters:
Model: M2000 (quasi-solid-state lithium-ion battery pack)
容量:2008.8U,32.4V/62Ah
USB-A（x2）：5V2.4A
USB-A QC3.0(x2):5/9/12/15/20V3A 60W Max
USB-C PD3.0(x2):5/9/12/15/20V5A 100W Max
车充口输出：12.6V12A
Dc 5521 出(x2):12.6V6A
AC output (x3): 220V/50Hz 2000W
AC交流输入:180-240V 1200W Max
Solar Input: XT60 18-50V 1000W Max
车载输入:XT60 12.5-15V 100W Max/33-40V 500W Max
Ambient temperature: -30°C~40°C
Shenzhen Yizu Innovation Technology Co., Ltd
There are cooling fans on both sides of the bottom, and the corresponding area shell grille is designed to be ventilated. The center rubber protective cover is equipped with an AC input port, an overload protector and a powerful and practical serial and parallel port, based on which two units can be connected, providing 4 kWh of power and a maximum output of 4000W, which greatly expands the application scenarios and meets the ultimate needs of users.
The feet on both sides of the bottom of the fuselage are pasted with anti-slip pads to ensure the smooth use of the outdoor power supply without slipping, and it can also play a certain cushioning role.
The measured length of the M2000 power station is about 35.5cm.
The height of the fuselage is about 25.5cm.
The thickness is about 21.6cm.
It weighs about 17.3kg.
The no-load voltage of the AC output port is measured to be 219.5V.
The frequency is 50Hz, and within the allowable range of error and small fluctuations, the measured value is completely in line with the 220V/50Hz output nominal of the AC output port.
The USB-C port supports FCP, AFC, QC3.0/5, PE2.0, PD3.0, PPS, DCP, SAM 2A, and Apple 2.4A charging protocols.
PDO报文显示 USB-C口还具备5v3a、9v3a、12v3a、15v3a、20v5a五组固定电压档位,以及3.3-21V3a一组PPS电压档位.
The USB-A fast charging port supports Apple 2.4A, Samsung 5V2A, DCP, QC3.0/2.0, AFC, FCP, and PE2.0 charging protocols.
It was measured that the USB-A standard charging port supports Apple 2.4A, Samsung 5V2A, and DCP charging protocols.
Dismantling of the M2000 power station
After reading the unpacking and testing of the mobile M2000 outdoor power supply, let's disassemble it and take a look at the internal design and materials.
First, remove the decorative patches on the corners of the panel and remove the back cover.
The cover plate has a built-in cooling fan, the fan is from Ebangda, model ADB0612MG-F, working voltage 12V, current 0.22A.
The AC input overcurrent protector is from Guoyu, which is 88 series, with a specification of 25A, and the solder joints are glued and insulated.
The plastic shell at both ends is made of PC+ABS material, with V0 flame retardant grade. Inside the housing is also printed the Gigami brand and the M2000 model.
The LED lighting board is connected to the internal PCBA module by wires.
Next, remove the front display panel of the power bank and connect it through the connector.
The interior is equipped with a solar MPPT and a step-down module, and the bottom is an inverter module.
Close-up of a one-piece aluminum alloy shell with screw posts inside to secure the panels on both sides.
An overview of the battery pack structure, secured by a plastic insulated frame and aluminium side panels.
The PCB on the other side of the battery pack is insulated with a plastic cover.
There is a PCB on the top of the battery pack for connecting the battery heater.
The battery is attached KSD9700 a thermal protector with an operating temperature of 45 degrees Celsius for heating temperature control.
Unscrew the set screws to remove the battery protection plate from the battery pack.
Aluminum alloy side panels are pasted with thermal pads corresponding to the position of the battery protection tube.
Continue to remove the MPPT module on the other side of the battery pack.
The position of the aluminum alloy side plate corresponding to the aluminum alloy side plate of the battery pack is also pasted with a thermal pad.
At the bottom of the battery pack is a bidirectional inverter module.
The thermistor is fixed with screws on the aluminum alloy housing.
Attach the battery label to the side panel of the battery pack.
The battery pack has a nominal voltage of 34.2V and a nominal capacity of 62Ah, which is 9 strings of 2 and is connected, and a single battery has a capacity of 31Ah and a nominal voltage of 3.8V.
The positive and negative tabs of the battery are connected by PCB soldering.
Close-up of nickel sheet spot welding of positive and negative tab of battery.
Close-up of thermistors that detect the temperature of batteries, a total of 9 cells corresponding to 9 strings of batteries.
Separate the battery pack and the bidirectional inverter module.
The weight of the battery pack measured by an electronic scale is about 9.35kg.
The battery heater is connected by welding.
There is fiberboard insulation between the aluminum alloy side plate of the battery and the battery.
Soldering to remove a piece of the battery heater.
Aluminum alloy side panels on the side of the battery, heating fins and battery pack at a glance.
On the PCB connected to the battery, there is a connector for the voltage detection line of the battery cell, a connector for the NTC thermistor that detects the temperature of the battery, and a connector for the positive and negative poles of the battery.
A list of battery protection boards, with connectors for battery temperature detection and battery voltage detection on the left side, battery protection chips and MCUs, and step-down power supply chips, and connectors and TVS on the right side.
Weld the battery protection tube, fuse, current sampling resistor on the back, and solder the isolated communication chip and cell equalization resistor on the right side.
The battery protection chip is from Zhongying, the model is SH367309, supports 5-16 strings of lithium battery applications, supports battery overcharge, overdischarge, temperature protection, charge and discharge overcurrent protection, short circuit protection function, and integrates battery balancing function. The built-in ADC collects cell voltage, temperature, current and remaining capacity of the battery pack.
10pcs 4mΩ resistors are connected in parallel to detect the charge and discharge current of the battery pack.
The battery protection tube is silk-screened SDACG 3FIK, in TO252 package, ten pieces are connected in parallel, and two groups are connected in series.
The triode transistor for pre-charge control is from UTC Youshun, model 2SD669A, NPN type, withstand voltage 160V, collector current 1.5A, and is available in a TO252 package.
Two 100 ohm resistors are connected in parallel for current limiting.
The 40A chip fuse is used for battery pack overcurrent protection.
Close-up of 100Ω resistor used for cell balancing.
The MCU used to detect the battery temperature is from Shanghai Aviation Core, model ACM32F070KBU7, using a 32-bit ARM Cortex M0 core, with a maximum frequency of 64MKz, built-in 12KB ROM, 32KB SRAM and 128KB eFLASH.
The TVS diode is from Junyao Electronics.
Model 5KP48CA for overvoltage surge protection.
The synchronous step-down converter is a 100V input voltage, ultra-low quiescent current synchronous buck converter, the chip adopts constant on-time control, with excellent transient response, the chip integrates a switch tube, the maximum output current is 3A, and the ESOP8 package is used.
Moruixin MK9019 Fact Sheet.
Close-up of the buck inductor used together.
The isolation transformer is from HALO, model TGM-240NS, and is used to isolate the power supply.
Close-up of isolated communication circuit area.
The isolated optocoupler comes from Everlight, model EL3H7B.
The 485 communication chip is from SRP, model TP8485E, and has built-in ESD protection function.
The two isolation chips are from Chuantu Micro, model CA-IS3722, which is a bidirectional dual-channel digital isolation chip.
Close-up of the XT30 connector used to connect the battery.
A list of the MPPT modules inside the power station, with input and output filter capacitors on the top, copper strip inductors soldered in the middle, and two drivers below the inductors for driving the switch. There is a step-down circuit at the bottom left, an MCU at the bottom middle, and a buck inductor and MOS transistor on the right.
The back of the MPPT module is welded with synchronous buck-boost MOS tube and buck-boost MOS tube, and the input terminal is equipped with a fuse for over-current protection, and the copper block is welded to increase the current carrying capacity.
The MPPT module main control MCU is from GigaDevice, with a GD32E503CCT6 model and a built-in 32-bit Arm Cortex-M33 core, a maximum frequency of 180MHz, and built-in 256KB FLASH and 96KB SRAM.
MCU外置8.000MHz时钟晶振特写。
The dual op amps are from SRP, model TP5592, low noise and zero drift.
Close-up of another double op amp of the same model.
Two EL357N optocouplers are used for isolated communication.
The input chip fuse is 40A for overcurrent protection.
Close-up of copper block soldered on the back of a PCBA module.
The input TVS diode is from Junyao Electronics, model SMCJ51A, which is used to absorb surge overvoltage.
The input filtered solid-state capacitor specification is 63V150μF, and four are connected in parallel.
The output filtered solid-state capacitor specification is 50V220μF.
The driver used to drive the synchronous buck-boost MOS transistor is from Shuming Semiconductor, model number SLM27211, with an integrated bootstrap diode on the chip, suitable for both half-bridge and full-bridge applications.
The other half-bridge driver is of the same model, and two are used for synchronous buck-boost H-bridge MOS tube drive.
There is also a half-bridge driver of the same model for synchronous step-down MOS tube drive.
The MOS transistor for synchronous buck-boost and synchronous step-down is from Jiejiewei, model JMSH1003ATL, NMOS, withstand voltage 100V, conduction resistance 2.7mΩ, and TOLL package.
The synchronous buck-boost power inductor is from Kodajia and is made of flat wire, model CPCF3222A-8R2MC.
The synchronous step-down inductor is also made of flat wire winding, model CPBL2212-120, and is reinforced with glue on both sides.
The solid-state capacitor for synchronous step-down output filtering is 35V330μF.
Three 3mΩ sampling resistors are connected in parallel to detect the synchronous buck-boost input and output currents.
Four 10mΩ sampling resistors are used to sense the step-down output current.
The synchronous step-down chip is from Xinzhou Technology, model SCT2A23, which is a 100V input and output current 1.2A switching step-down chip.
68μH合金降压电感特写。
The output filter capacitor is from Reilon and is specified at 220μF 35V.
The MOS transistor used to control the battery heater is from Lizhi Semiconductor, model QN6101M6N, NMOS, withstand voltage 60V, conduction resistance 2.87mΩ, and is available in PRPAK5*6 package.
The MOS tube used to control the output of the cigarette lighter interface is from IWC Semiconductor, model AONS21357, PMOS, withstand voltage -30V, conduction resistance 6.3mΩ, DFN5*6 package.
A 25A chip fuse is used for overcurrent protection.
On the front panel of the fuselage, there is a display screen, a USB fast charging interface, and a DC input and output interface. There is an AC output socket underneath.
The back of the panel is insulated with Mylar sheets, and the corresponding cigarette lighter interface is connected through wires and plug-ins.
Remove the insulating Mylar sheet, and the PCBA module is fixed with screws.
Unscrew the set screws and remove the display panel.
The display panel is equipped with elements such as LED display and step-down inductor.
The shell is made of PC+ABS material, with V0 flame retardant grade. Inside the housing is also printed the Gigami brand and the M2000 model.
The display is soldered to the PCBA module.
The MCU used for screen display and whole machine control comes from Huimang Micro, silk screen B1k5CTH.
The voltage regulator chip that supplies power to the MCU is silkscreened G75KG.
The MOS tube used to drive the LED light on the back is from Huayi Microelectronics, model HYG027N04, NMOS, withstand voltage 40V, conduction resistance 2.7mΩ, and is packaged in PDFN5*6-8L.
The other MOS tube is of the same model.
The dual USB-A port step-down converter adopts Nanxin Technology SC8102, which provides 32pin 5*5 qfn package with built-in switch tube, which is a 4-36V wide voltage input dual-output synchronous rectifier step-down converter, supporting 5V voltage output or setting other output voltages, and can provide high-precision output current limit, and enter constant current mode when one of them is overcurrent.
The total output power can be set by the resistor for constant power output, it supports line loss compensation, programmable frequency setting and working mode selection, supports complete protection functions, including over-voltage, over-current protection, short-circuit protection and over-temperature protection, and has built-in automatic protocol recognition, which is suitable for car charger, multi-port wall charger, hub and industrial applications.
Nanxin SC8102 Facts.
The charging head network has learned that the products using Nanxin Technology's SC8102 step-down converter also include miraku 100W PD mobile power supply, miraku 87W PD mobile power supply, Deli 2A1C 45W PD fast charging extension cord socket, Meifuda 100W USB PD desktop fast charging charger, ZMI Zimi 65W USB PD fast charging six-position extension cord plug-in board, Nanfu Aircharge 65W PD fast charging charger and other products.
Close-up of the 15μH alloy inductor used.
The input filter capacitor specification is 150μF 50V.
The input filter capacitor specification is 50V100μF.
The output filter capacitor is 220μF 35V.
Close-up of synchronous step-down circuits for fast-charging USB-C and USB-A interfaces.
The main control chips of the two step-down circuits are equipped with intelligent SW3516H for step-down control and protocol identification. Zhirong SW3516H is a highly integrated multi-fast charging protocol dual-port charging chip, which supports A+C port any port fast charging output, and supports dual-port independent current limiting.
SW3516H integrates a 5A high-efficiency synchronous step-down converter. It supports multiple fast charging protocols such as PPS/PD/QC/AFC/FCP/SCP/PE/SFCP, with a maximum output PD of 100W, CC/CV mode, and dual-port management logic. Only a small number of peripheral components are needed to form a complete high-performance multi-fast charging protocol dual-port charging solution.
Through the dismantling of the charging head network, it was found that the SW3516H was also used in ASUS 65W 2C1A gallium nitride charger, Nubia 65W Deuterium Feng three-port gallium nitride fast charger, Rapoo 65W GaN fast charging, Greenlink 65W 4C port gallium nitride fast charging charger, Lenovo 90W flash charging dual-port gallium nitride charger, Hongdashun 120W four-port 2C2A fast charging and other products, in addition, Zhirong's fast charging chip can also be used in USB PD fast charging mobile power, fast charging car charging and other fields.
The MOS transistor used to control the power supply of the step-down circuit is from Guanyu Semiconductor, model KS6304T, PMOS, withstand voltage -60V, conduction resistance 7.5mΩ, and comes in a PDFN5060 package.
The two MOS transistors for synchronous step-down are from Lizhi Semiconductor, model QN6101M6N, NMOS, withstand voltage 60V, conduction resistance 2.87mΩ, and PRPAK5*6 package.
Close-up of 22μH alloy step-down inductor, reinforced by glue on both sides.
The output filter capacitor is 220μF 35V.
The VBUS switch for USB-C and USB-A ports is from Lizhi Semiconductor, model QN3107M6N, NMOS, withstand voltage 30V, conduction resistance 2.6mΩ, and PRPAK5*6 package.
Close-up of filter inductor.
A step-down chip from Xinzhou Technology, model SCT2630, the chip has a built-in switch tube, supports 60V input voltage, and the output current is 3A.
Close-up of 15μH alloy inductor, reinforced by glue on both sides.
A step-down chip from Xinzhou Technology, model SCT2613, is a switching step-down chip that supports 60V input voltage and output current 1A.
Close-up of the 33μH alloy inductor used.
The output filter capacitor is 220μF 35V.
The wireless communication module is from Quectel, model FC41D, with built-in MCU, WiFi and Bluetooth combo module. The built-in MCU is clocked at up to 120MHz and supports IEEE802.11b/g/n protocol and Bluetooth 5.2.
One transceiver chip from SRP is TPT75176H for RS-485 communication.
Power input socket and SMD fuse and TVS close-up.
Close-up of the power switch button of the system, patch soldering, and LED indicators on the top and bottom.
Close-up of the switch button used to control the USB interface.
Close-up of the switch button used to control the DC output.
Close-up of the switch button used to control the output of the inverter.
Close-up of patch buzzer.
The bidirectional inverter module is fixed in an aluminum alloy housing.
Unscrew the fixing screws and remove the PCBA module from the aluminum alloy housing, which is insulated with Mylar sheets inside.
The copper block is soldered on the back of the PCBA module to enhance the current carrying capacity and enhance the heat dissipation.
Paste the information label on the aluminum alloy shell, the inverter model is BSJ2022-06, the input voltage is 200-240Vac, the input current is 10A, the output is 220Vac, 50Hz, and the current is 9.1A. The battery voltage is 27-37.8V, which is suitable for 9 strings of lithium battery voltage range.
The inverter housing is equipped with a thermal pad inside to dissipate heat for the PCBA module.
The front of the inverter PCBA module is at a glance, the left connector is the charging input and parallel interface, and the lower connecting wire is the inverter output. The upper right corner is the inverter DC input terminal, which is welded with DC connection wires, filter capacitors, MOS tubes and two transformers. Under the transformer is the control board, and the high-voltage filter capacitor, resonant capacitor and resonant inductor are welded below the control board.
The left side of the high-voltage filter capacitor is welded with the filter inductor, and the bottom eight switch tubes are coated with silicone sleeves for thermal conductivity and insulation. In the upper left corner of the PCBA module, there are common mode inductors, safety X2 capacitors, varistors and relays to switch input and output.
The back of the PCBA module is soldered to isolate the driver chip and the auxiliary power chip.
The inverter input is equipped with 16 filter capacitors.
The filter capacitor specification is 50V 470μF.
There are 20 step-up MOS tubes between the filter capacitor and the transformer.
5pcs 1mΩ resistors are connected in parallel to detect the DC terminal current of the inverter.
The MOS transistor is from Toshiba, model TPH2R408QM, NMOS, withstand voltage 80V, conduction resistance 1.9mΩ.
Close-up of a step-up transformer with a copper foil shield around the core.
Behind the step-up transformer is the control board.
The auxiliary power IC from Infineon, model ICE2QR2280G-1, is a quasi-resonant power IC with a built-in 800V switch with an active burst mode and a no-load power consumption of less than 100mW.
Close-up of a transformer used to isolate a power supply.
Two diodes are used for output rectification.
The output filter capacitor specification is 560μF 16V.
The other filter capacitor has the same specifications.
Two SRP TPM27524 dual-channel low-side drivers are used to drive the isolation transformer.
Two isolation transformers are used for switch drives.
Switches, resonant capacitors and resonant inductors at a glance.
The resonant inductor is wound with litz wire.
The resonant capacitor is from Xiamen Farah Electronics, with a specification of 0.033μF1000V, and is welded to a vertical small plate.
The switch is from Shangyangtong, model SRC65R052FB, NMOS, withstand voltage 650V, conduction resistance 52mΩ, TO-247 package.
Solder to remove the two filter capacitors.
The filter capacitor is from Fengbin, the specification is 470μF500V, and the two are connected in parallel.
There are two MCUs and corresponding isolated communication chips on the control board.
The transformer output wire is equipped with a current transformer coil, which is insulated by a heat shrink tube and fixed with a cable tie.
Close-up of the totem pole PFC circuit with four switches and a filter inductor.
The two GaN switches for the totem pole PFC fast half-bridge are from GaN Future, model G1N65R035TB-N, withstand voltage 650V, conduction resistance 35mΩ, and are available in a TO-247-3L package.
The switch tubes of the two slow half-bridges are SRC65R052FB by Shangyangtong.
Close-up of magnetic ring filter inductor.
The driver used to drive the switch is from NOVOSENSE, model NSi6602AD, which is a dual-channel isolated gate driver IC that supports 2MHz switching frequency applications, and provides 5000Vrms isolation, supporting 4A sink current and 6A source current output.
The Hall current sensor from CROCUS is an isolated type CT431-SWF50MR with a range of 50 A and supports AC current measurements.
The isolated power driver chip is from Yuante Technology, the model is VPS8701, and it is used for isolation transformer drive.
The isolation transformer is from Yuante Technology, model VPT87DE, and is used for isolated power supply.
Close-up of SRP TPM27524 dual-channel low-side driver.
Hall current transformers from Xingan Semiconductor, model SC840DFT-50F5, are isolated fully integrated current sensors for detecting output currents.
The output of the bidirectional inverter module is welded with relays, safety X2 capacitors, common mode inductors and varistors and other components.
The input fuse size is 20A.
The varistor is from Fenghua, model FNR-14K511, which is used for lightning surge protection.
The blue Y capacitor comes from Anshan Qifa Electronics.
The two relays are from Hongfa, model HFD17/12-Z-3N, with a coil voltage of 12V, with a set of changeover contacts and a contact capacity of 3A.
The thermistor is from TKS Kokin with a model PPL16500 for overload protection.
The relay used for power supply switching control is from Hongfa, model HF161F-W-12HT, with a contact capacity of 31A and a coil voltage of 12V.
The common mode inductor is wound with flat copper wire, and the bottom is glued and reinforced.
The safety X2 capacitor is from Europ and has a specification of 2.2μF.
THE TOTEM-POLE PFC CONTROLLER FROM NXP, MODEL MC56F82748VLH, IS A DIGITAL SIGNAL CONTROLLER WITH 64KB FLASH AND 8KB SRAM, HIGH-RESOLUTION PWM OUTPUT, BUILT-IN 12-BIT DAC AND HIGH-SPEED ADC.
Close-up of the chip clock crystal oscillator.
The main control chip comes from TI Texas Instruments, which is a C2000 series real-time microcontroller, with a TMS320F280025PNS model, a built-in 32-bit DSP core, a main frequency of 100MHz, an integrated FPU and TMU, and a built-in 128KB flash memory. It can be used for industrial motor drives, motor control, photovoltaic inverters, digital power supplies, electric vehicles and transportation, sensing and signal conditioning applications.
Close-up of the chip clock crystal oscillator.
The isolation chip is from Rongpai, model Π131S61R, which is a three-channel digital isolator used for communication between primary master control chips.
The op amp chip is from SRP, model TP1562A, which is a dual op amp for rail-to-rail input and output.
Three Everlight EL3H7B optocouplers are used for isolated communication.
A list of all dismantling and a family photo.
Summary of the dismantling of the charging head network
The mobile M2000 outdoor power station adopts a one-piece aluminum alloy shell, and there are handles on both sides of the housing. There is a display panel on the front of the outdoor power station, and there is a USB fast charging output and an inverter AC output. On the back of the outdoor power supply, there is an AC input interface and a parallel interface, and a large-area fill light. The outdoor power station has a built-in 2000Wh quasi-solid-state lithium battery, a bidirectional inverter that supports 1200W charging input and 2000W inverter output, and a USB-C interface that supports 100W fast charging.
Through the dismantling of the charging head network, it is learned that the mobile M2000 outdoor power station adopts a modular design, which is composed of a display panel, a battery protection board, an MPPT module and a bidirectional inverter module. The battery pack adopts a frame structure, which is composed of a plastic insulated frame with aluminum alloy side panels. The battery pack is composed of 9 strings of lithium batteries, the battery protection chip is from Zhongying, which has a balancing function, and uses Shanghai Aviation Core MCU to detect the temperature of a single battery.
The MPPT module uses GigaDevice MCU for synchronous buck-boost and synchronous buck-boost control. The display panel adopts Huimang micro main control chip, USB-C and USB-A interfaces use step-down output, use Zhirong SW3516H, and USB-A interface uses Nanxin Technology SC8102 synchronous step-down converter. The bidirectional inverter module uses NXP and Texas Instruments controllers and uses GaN future GaN devices.
Each module in the mobile M2000 outdoor power station is connected by plug-ins, the MPPT module on both sides of the battery pack and the protection plate and the aluminum alloy side plate of the battery pack are pasted to dissipate heat, the bidirectional inverter module uses an aluminum alloy shell, and dissipates heat through the shell, and the battery pack has a built-in heating function, which can maintain normal charging and discharging performance at low temperatures, which greatly improves the user experience.