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CN-224218122-U - Double Type-C interface 120W dynamic allocation vehicle-mounted charging device

CN224218122UCN 224218122 UCN224218122 UCN 224218122UCN-224218122-U

Abstract

The utility model relates to a vehicle-mounted charging device with a dual Type-C interface 120W dynamic allocation function, which consists of a shell, an internal power input protection circuit, a voltage conversion circuit, a fast charging protocol identification module, a dual Type-C interface module and an ESD protection circuit. The power input protection circuit comprises an EMC filtering and PMOS anti-reverse protection circuit for providing a power supply after filtering and anti-reverse protection, and the voltage conversion circuit adopts a four-switch Buck-Boost circuit for realizing high-efficiency voltage conversion. The quick charge protocol identification module identifies an external device charge protocol through the protocol chip. The dual Type-C interface module contains two Type-C interfaces. The ESD protection circuit is composed of TVS diode arrays. The utility model can charge two users at the same time, supports a plurality of quick charging protocols, improves the charging efficiency, has overcurrent, overvoltage, overtemperature and short-circuit protection functions, and ensures the safety of the users and the charging equipment.

Inventors

  • CHENG HONGYING
  • LIU CONGBO
  • LUO SHUAI

Assignees

  • 江苏骅盛车用电子股份有限公司

Dates

Publication Date
20260508
Application Date
20250507

Claims (9)

  1. 1. The vehicle-mounted charging device with the dual Type-C interface 120W dynamic distribution is characterized by comprising a shell, and a power input protection circuit, a voltage conversion circuit, a fast charging protocol identification module, a dual Type-C interface module and an ESD protection circuit which are packaged in the shell; the input end of the power input protection circuit is connected with a vehicle-mounted power supply, and the output end of the power input protection circuit is connected with a voltage conversion loop and is used for providing a power supply after filtering and anti-reverse protection; The voltage conversion circuit comprises a four-switch Buck-Boost circuit based on an MPQ4263 chip, the input end of the voltage conversion circuit receives power from the power input protection circuit, and the output end of the voltage conversion circuit is connected with the USB interface module and is used for providing dynamically regulated voltage and current; The rapid charging protocol identification module is respectively connected with the dual Type-C interface module and the voltage conversion loop, and is used for identifying a charging protocol required by external equipment through a protocol chip and communicating with the voltage conversion loop to regulate output voltage and current; The dual Type-C interface module comprises two Type-C interfaces, and each interface is independently connected to the output end of the voltage conversion circuit; The ESD protection circuit is composed of a TVS diode array and is connected in parallel to a data line and a power line of the Type-C interface and used for absorbing electrostatic pulses and protecting an internal circuit.
  2. 2. The dual Type-C interface 120W dynamically allocated vehicle-mounted charging device of claim 1, wherein the power input protection circuit is formed by an EMC filter circuit and a PMOS anti-reverse protection circuit in series; The EMC filter circuit comprises a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a capacitor C16 and an inductor L3, wherein the capacitor C11 and the capacitor C12 are connected in parallel, one end of the capacitor C11 is connected with a power input interface J1 outgoing line, and the other end of the capacitor C11 is grounded; The PMOS anti-reverse protection circuit comprises a PMOS tube Q11, a diode D9 and a resistor R46, wherein a source electrode of the PMOS tube Q11 is connected with an output end of the EMC filter circuit, a drain electrode of the PMOS tube Q11 is connected to an output end VIN1 of the power input protection circuit, a drain electrode of the PMOS tube Q11 is grounded through the resistor R46, and the diode D9 is connected with the PMOS tube Q11 in parallel.
  3. 3. The dual Type-C interface 120W dynamic allocation vehicle-mounted charging device of claim 1, wherein the four-switch Buck-Boost circuit comprises a switching tube Q1, a switching tube Q2, a switching tube Q3, a switching tube Q4, and an inductor; The four switching tubes form two bridge arms, the upper bridge arm is formed by switching tubes Q2 and Q3, and the lower bridge arm is formed by switching tubes Q1 and Q4, wherein the drain electrode of the switching tube Q1 is connected with the source electrode of the switching tube Q2, and the source electrode of the switching tube Q1 is grounded; One end of the inductor is connected with a node SW1 between the switching tube Q2 and the switching tube Q1, and the other end of the inductor is connected with a node SW2 between the switching tube Q3 and the switching tube Q4.
  4. 4. The dual Type-C interface 120W dynamic distribution vehicle charging device of claim 1, wherein the protocol chip is an MPF52000GRE chip.
  5. 5. The dual Type-C interface 120W dynamic allocation vehicle-mounted charging device of claim 4, wherein the MPF52000GRE chip is connected to an external device through a CC pin of the Type-C interface.
  6. 6. The dual Type-C interface 120W dynamic distribution vehicle-mounted charging device of claim 4, wherein the MPF52000GRE chip and MPQ4263 chip are connected by an I2C communication protocol.
  7. 7. The dual Type-C interface 120W dynamically allocated vehicle-mounted charging device of claim 1, wherein the ESD protection circuit comprises a TVS diode array of 8 TVS diodes, each TVS diode having a cathode connected to an associated pin of the Type-C interface and an anode connected to ground.
  8. 8. The dual Type-C interface 120W dynamic distribution vehicle charging device of claim 1, wherein the TVS diode is model SP4023.
  9. 9. The dual Type-C interface 120W dynamic distribution vehicle charging device of claim 1, wherein the housing is an aluminum alloy die cast.

Description

Double Type-C interface 120W dynamic allocation vehicle-mounted charging device Technical Field The utility model relates to the field of vehicle-mounted charging equipment, in particular to a vehicle-mounted charging device with a dual Type-C interface 120W dynamic allocation function. Background The development of the vehicle-mounted charging seat presents a situation of high voltage, high power and high integration. With the increasing popularity of new energy automobiles, the demand of people for vehicle-mounted charging is continuously increased, which promotes the technology of vehicle-mounted charging seats to continuously advance so as to realize higher charging efficiency and bring safer use experience for users. In this context, the Type-C (universal serial bus Type C) interface gradually becomes the mainstream choice in the market by virtue of good compatibility, excellent communication function, and capability of supporting hundreds of watts of power. Currently, conventional vehicle-mounted chargers mostly employ a USB Type-a interface. The design has obvious limitation, and due to the limited number of pins, the function expansion capability is poor, the selection of the charging power level is small, and the function is relatively single. And, the USB Type-A interface only supports one-way insertion, thereby greatly compromising the convenience of use. The traditional vehicle-mounted charging device is poor in charging speed, the current of the vehicle-mounted USB interface is low, only low-power charging can be provided, and the requirement of quick charging of a current mobile phone is difficult to meet. Meanwhile, the charging protocols are fewer, most of the charging protocols adopt a general protocol, the private protocols of the high-power charger cannot be compatible, and the charging requirements of portable equipment such as new mobile phones in the market are difficult to adapt. Disclosure of utility model In view of the foregoing, it is desirable to provide a dual Type-C interface 120W dynamic allocation vehicle charging device for solving the above-mentioned drawbacks of the prior art. In order to solve the problems, the utility model provides a dual Type-C interface 120W dynamic allocation vehicle-mounted charging device, which comprises a shell, a power input protection circuit, a voltage conversion circuit, a quick charge protocol identification module, a dual Type-C interface module and an ESD protection circuit, wherein the power input protection circuit, the voltage conversion circuit, the quick charge protocol identification module, the dual Type-C interface module and the ESD protection circuit are packaged in the shell; the input end of the power input protection circuit is connected with a vehicle-mounted power supply, and the output end of the power input protection circuit is connected with a voltage conversion loop and is used for providing a power supply after filtering and anti-reverse protection; The voltage conversion circuit comprises a four-switch Buck-Boost circuit based on an MPQ4263 chip, the input end of the voltage conversion circuit receives power from the power input protection circuit, and the output end of the voltage conversion circuit is connected with the USB interface module and is used for providing dynamically regulated voltage and current; The rapid charging protocol identification module is respectively connected with the dual Type-C interface module and the voltage conversion loop, and is used for identifying a charging protocol required by external equipment through a protocol chip and communicating with the voltage conversion loop to regulate output voltage and current; The dual Type-C interface module comprises two Type-C interfaces, and each interface is independently connected to the output end of the voltage conversion circuit; The ESD protection circuit is composed of a TVS diode array and is connected in parallel to a data line and a power line of the Type-C interface and used for absorbing electrostatic pulses and protecting an internal circuit. Preferably, the power input protection circuit is formed by connecting an EMC filter circuit and a PMOS anti-reverse protection circuit in series; The EMC filter circuit comprises a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a capacitor C16 and an inductor L3, wherein the capacitor C11 and the capacitor C12 are connected in parallel, one end of the capacitor C11 is connected with a power input interface J1 outgoing line, and the other end of the capacitor C11 is grounded; The PMOS anti-reverse protection circuit comprises a PMOS tube Q11, a diode D9 and a resistor R46, wherein a source electrode of the PMOS tube Q11 is connected with an output end of the EMC filter circuit, a drain electrode of the PMOS tube Q11 is connected to an output end VIN1 of the power input protection circuit, a drain electrode of the PMOS tube Q11 is grounded through the resistor