CN210430974U

CN210430974U - 5V-4.5A large-current quick charging circuit for smart phone

Info

Publication number: CN210430974U
Application number: CN201921647975.8U
Authority: CN
Inventors: 周爱金
Original assignee: Shanghai Ruiyi Communication Technology Co ltd
Current assignee: Shanghai Ruiyi Communication Technology Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-04-28
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses a smart mobile phone 5V-4.5A heavy current fills circuit soon, including Type-C interface, cell-phone SOC, PMU chip, chip HL7019 and the chip ETA6005 that charges of charging, cell-phone SOC passes through IIC interface control chip HL7019 that charges, and cell-phone SOC still charges chip ETA6005 through GPIO mouth control, and the PMU chip is used for the discernment etc. of cell-phone SOC power supply and charger equipment Type, and chip HL7019 and the chip ETA6005 that charges are connected respectively to Type-C interface, the utility model discloses an use the IC chip that charges that a smart mobile phone platform is general to connect the IC chip that charges of a self hardware control in parallel, two chips that charge carry out quick charge to a battery under the condition that uses 5V output charger simultaneously. The problem of heating of the charging chip can be reduced, the charging protocol chip is not needed, the charging chip is made of domestic general materials, and the charging chip is not limited by the American technology.

Description

5V-4.5A large-current quick charging circuit for smart phone

Technical Field

The utility model relates to a technical field that charges specifically is a 5V-4.5A heavy current fast charging circuit of smart mobile phone.

Background

Along with the improvement of various performances such as the requirement of the smart phone on 5G communication, 8K high-definition video image processing, AI photographing, online high-frame-rate game experience, the continuous increase of the screen size and the number of cameras and the like, the processing capacity of operation circuits such as a CPU, a GPU, an NPU, a DSP, an ISP and the like is continuously enhanced, and all of the performances result in the rapid increase of the overall energy consumption requirement of the smart phone. Increasing the capacity and the speed of charging of the battery is a common solution to address the problem of increased energy consumption with a poor experience for the consumer.

The current quick charge solution comprises a high-pass QC protocol high-voltage charge scheme, a VOOC flash charge scheme of OPPO and a charge pump quick charge scheme of American TI company.

The high-voltage quick-charging QC scheme has a serious heating problem of the charging chip. For example, the voltage of 9V/12V output by the charging head is subjected to secondary voltage reduction by a charging IC in the mobile phone after entering the mobile phone. The conversion efficiency of a normal BUCK-type high-voltage charging IC is only 89%, so that the conventional 18W fast charging scheme has a heat loss of 1.98W only on the charging IC, and the heat loss becomes more serious as the charging power and the charger voltage are further increased; although the problem of high-voltage quick charging and heating is avoided in the OPPO VOOC flash charging which is a low-voltage quick charging scheme, a charging chip, a charging interface, a charging wire and a charging head are specially customized for the VOOC flash charging; the charge pump quick charging scheme proposed by the American TI company is a capacitance type BUCK converter, the efficiency of the capacitance type BUCK converter is higher than that of an inductance type BUCK converter in a high-voltage charging scheme, but a charging IC (integrated circuit) of a mobile phone end needs to negotiate a charging head to output proper voltage through a USB (universal serial bus) PD (personal digital assistant) protocol or a proprietary protocol to cooperate with a charge pump to carry out constant-current constant-voltage charging, and the technology of a charging chip is mastered in the hand of a major American system factory.

Disclosure of Invention

An object of the utility model is to provide a smart mobile phone 5V-4.5A heavy current fills circuit soon to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a 5V-4.5A heavy current of smart mobile phone fills circuit soon, includes Type-C interface, cell-phone SOC, PMU chip, charges chip HL7019 and charging chip ETA6005, cell-phone SOC passes through IIC interface control charging chip HL7019, and cell-phone SOC still passes through GPIO mouth control charging chip ETA6005, and the PMU chip is used for providing the cell-phone SOC power supply and the discernment of charger equipment Type etc. Type, and Type-C interface connects charging chip HL7019 and charging chip ETA6005 respectively.

As a further aspect of the present invention: the model of the mobile phone SOC is SC 9832E.

As a further aspect of the present invention: the model of the PMU chip is SC 2721G.

As a further aspect of the present invention: and the PMU chip is also connected with a battery.

As a further aspect of the present invention: the PMU chip is connected with the mobile phone SOC through a USB2.0 interface.

Compared with the prior art, the beneficial effects of the utility model are that: 1: the battery is charged through the two chips simultaneously, so that the problems of large heat loss and low efficiency of the single chip are avoided. The charging efficiency can be kept above 92%, and the stability and reliability of charging are ensured. 2: the software is simple to implement, a complex charging protocol is not needed, and the software is slightly modified on the basis of the original stable and universal android system (the ETA6005 is started to charge in the high-current constant-current charging stage). 3: the used charging chip materials are all universal domestic materials and are not limited by American enterprises. The charger and the charging wire used are also general materials, the market matching is high, and the cost is low.

Drawings

Fig. 1 is a system block diagram of the present invention.

Fig. 2 is a circuit diagram of the charging chip HL 7019.

Fig. 3 is a circuit diagram of the charge chip ETA 6005.

FIG. 4 is a USB Type-C circuit diagram.

Fig. 5 is a battery interface circuit diagram.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, example 1: the embodiment of the utility model provides an in, smart mobile phone 5V-4.5A heavy current fills circuit soon, including Type-C interface, cell-phone SOC, PMU chip, chip HL7019 and the chip ETA6005 that charges charge, cell-phone SOC passes through IIC interface control chip HL7019 that charges, and cell-phone SOC still controls chip ETA6005 that charges through the GPIO mouth, and the PMU chip is used for the discernment etc. of cell-phone SOC power supply and charger equipment Type, and chip HL7019 and the chip ETA6005 that charges are connected respectively to Type-C interface.

The invention uses the smart phone SOC as the national Zhangui SC9832E and the PMU chip SC2721G, and the charging chip uses the national HL7019 of Hidi Mi Corp and the ETA6005 of Yu Tai Corp respectively. The charger used at the input end is a universal Type 5V product, and the charging interface is a universal Type-C interface (5A through-current capability). SC9832E controls charging chip HL7019 through IIC interface software, SC9832E controls charging chip ETA6005 through GPIO port, thus double chips can charge one battery at the same time. The charging process of the battery, the NTC, the coulometer and the battery voltage detection are all completed by android software carried by domestic Zhankui SC2721G and SC 9832E.

The charging chip HL7019 works by controlling the whole charging process through an IIC interface (SDA/SCL) by android software operated by the smart phone chip SC 9832E. The charger inputs 5V voltage to a VBUS interface of the chip through a Type-C interface of the mobile phone, and reduces the voltage to charging voltage (BAT interface) required by the battery and supply voltage (SYS interface) of a system through a voltage reduction function of the chip. Charging information such as charging current value, charging voltage value, charging state value and the like can be completed by modifying a register in the HL7019 chip through software. See fig. 2.

The circuit working flow of the invention is as follows:

the charging of the smart phone is divided into three main stages: constant current pre-charging, large current constant current charging and constant voltage charging. The process of needing large-current charging in the whole charging process is only in the large-current constant-current charging stage, so that two charging chips are required to work together at the moment. And in other stages, high-current charging is not needed, so that only the HL7019 chip is needed to work.

When the voltage of the battery is lower than 3.0V, the charging chip HL7019 performs constant-current pre-charging on the lithium battery by adopting about 130mA current, and the enabling pin of the ETA6005 chip is pulled up to VCHG through the resistor R1001, so that the lithium battery cannot work. See FIG. 3

When the voltage of the lithium battery is higher than 3.0V, the second stage and the large-current constant-current charging stage are carried out, the charging current can reach the value of 1C of the battery capacity at the moment, and is even larger, the charging current is related to the battery technology, and the cost is high when the battery technology is larger. For example, a 1C value of 4500mAh, the charging current can reach 4.5A. At this time, the SC9832E is required to write the register of the charging chip HL7019 through the IIC interface software to enable the register to reach 2.5A charging current, and after the system software detects that the charging enters a large-current constant-current charging stage, the SC9832E outputs high enable through the GPIO port to enable the N-MOS transistor Q1001 to be conducted, and the charging chip ETA6005 is enabled. The charging current at this time reaches the 2A charging of the hardware design. The battery is charged by the two charging chips together, and 4.5A current can be input. This phase is the fastest rise in battery voltage and most energy accepting. Therefore, two charging chips are required to work simultaneously to charge the battery, so that the charging current is increased, the charging loss is reduced, and the quick charging effect is achieved.

When the battery voltage is charged to a preset constant voltage point, the charging enters constant voltage charging, the battery voltage does not rise any more at the moment, and the charging current drops sharply. And judging that the battery is fully charged until the charging current is less than 100 mA. Since large current charging is not required, the GPIO of SC9832E outputs low level to turn off the N-MOS transistor Q1001, so that the ETA6005 does not operate.

The high-current quick charge of the smart phone 4.5A is finally realized through the design, and finally, a 4500mAh large battery can be fully charged within two hours.

Example 2: on the basis of embodiment 1, the charger inputs 5V voltage to the IN interface of the charging chip ETA6005 through the Type-C interface of the mobile phone, and reduces the voltage to the charging voltage (BATT interface) required by the battery through the voltage reduction function of the chip, and the resistance at the ISET1 interface sets the charging current. The SC9832E chip controls whether the chip works or not through GPIO. See fig. 3.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a 5V-4.5A heavy current of smart mobile phone fills circuit soon, includes Type-C interface, cell-phone SOC, PMU chip, charging chip HL7019 and charging chip ETA6005, its characterized in that, cell-phone SOC passes through IIC interface control charging chip HL7019, and cell-phone SOC still passes through GPIO mouth control charging chip ETA6005, and the PMU chip is used for providing cell-phone SOC power supply and the discernment of charger equipment Type etc. Type, and Type-C interface connects charging chip HL7019 and charging chip ETA6005 respectively.

2. The 5V-4.5A large-current quick charging circuit of the smart phone according to claim 1, wherein the model of the SOC of the smart phone is SC 9832E.

3. A 5V-4.5A large-current fast charging circuit for a smart phone according to claim 1, wherein the model of the PMU chip is SC 2721G.

4. A smartphone 5V-4.5A high-current fast charging circuit according to claim 2, characterized in that the PMU chip is further connected with a battery.

5. The 5V-4.5A large-current quick charging circuit of the smart phone according to claim 3, wherein the PMU chip is connected to the cell phone SOC through a USB2.0 interface.