CN111463842B - Electronic equipment and communication method thereof - Google Patents
Electronic equipment and communication method thereof Download PDFInfo
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- CN111463842B CN111463842B CN201911277043.3A CN201911277043A CN111463842B CN 111463842 B CN111463842 B CN 111463842B CN 201911277043 A CN201911277043 A CN 201911277043A CN 111463842 B CN111463842 B CN 111463842B
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- power supply
- terminal pin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
- H02J7/0032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
Abstract
An electronic device and a communication method thereof relate to the technical field of electronic devices, the electronic device in the embodiment of the invention comprises a contact interface for connecting an external mobile power supply, the contact interface comprises a detection terminal pin for detecting that the mobile power supply is connected to the electronic device, the detection terminal pin is connected with a processor and sends a detected preset signal to the processor, the contact interface comprises a communication terminal pin for carrying out data communication between the mobile power supply and the electronic device after the mobile power supply is connected to the electronic device, the communication terminal pin is connected to the processor through a pull-up resistor, the processor accesses the pull-up resistor to a power supply terminal if the preset signal of the detection terminal pin is received, the communication terminal pin is in a working state with voltage, and if the preset signal of the detection terminal pin is not received, the pull-up resistor is not switched into the supply terminal and the communication terminal pin is in a state without a voltage.
Description
Technical Field
The invention relates to the technical field of power supply of electronic equipment, in particular to electronic equipment and a communication method thereof.
Background
With the technical development and wide use of various intelligent electronic devices, the dependence degree of users on the electronic devices is higher and higher, and the use frequency is higher and higher.
And because the energy density of the battery is not broken through at all times, the adapter is required to be connected with a power socket for charging.
Disclosure of Invention
The invention provides an electronic device and a communication method thereof, which can enable a communication pin on the electronic device to carry working voltage after the electronic device is connected with an external mobile power supply.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes a processor, a memory, and a battery, and further includes:
the mobile power supply is used for supplying power to the electronic equipment or charging a battery of the electronic equipment;
the contact interface comprises a detection terminal pin used for detecting that the mobile power supply is connected to the electronic equipment;
the detection terminal pin is connected with the processor and sends the detected preset signal to the processor;
the contact interface comprises a communication terminal pin, and the communication terminal pin is used for data communication between the mobile power supply and the electronic equipment after the mobile power supply is connected to the electronic equipment;
the communication terminal pin is connected to the processor through a pull-up resistor;
the processor accesses the pull-up resistor to the power supply terminal if receiving a preset signal of the detection terminal pin, the communication terminal pin is in a working state with voltage, does not access the pull-up resistor to the power supply terminal if not receiving the preset signal of the detection terminal pin, and the communication terminal pin is in a state without voltage.
In a second aspect, an embodiment of the present invention provides a communication method for an electronic device,
the electronic equipment is connected with an external mobile power supply through a contact interface, and the mobile power supply supplies power to the electronic equipment or charges a battery of the electronic equipment;
the contact interface detects that the mobile power supply is connected to the electronic equipment through a detection terminal pin;
the detection terminal pin sends a detected preset signal to the processor, and the detection terminal pin is connected with the processor;
if the processor receives a preset signal of the detection terminal pin, the pull-up resistor is connected to a power supply terminal, the communication terminal pin is connected to the processor through the pull-up resistor, and the communication terminal pin is in a working state with voltage and used for data communication between the electronic equipment and the mobile power supply;
and if the processor does not receive the preset signal of the detection terminal pin, the pull-up resistor is not connected to the power supply terminal, and the communication terminal pin is in a state without voltage.
According to the electronic equipment provided by the embodiment of the invention, when the electronic equipment is connected with an external mobile power supply through the contact interface, the contact interface can detect that the mobile power supply is connected into the electronic equipment through the detection terminal pin; if the processor receives a preset signal of the detection terminal pin, the pull-up resistor is connected to a power supply terminal, the communication terminal pin is connected to the processor through the pull-up resistor, and the communication terminal pin is in a working state with voltage and can be used for data communication between electronic equipment and a mobile power supply;
if the processor does not receive the preset signal of the detection terminal pin, the pull-up resistor is not connected to the power supply terminal, the communication terminal pin is in a state without voltage, the risk that the communication terminal pin is corroded and damaged when the communication terminal pin is exposed to the external environment with voltage is prevented, and the safety and the reliability of the electronic equipment can be submitted when the electronic equipment is not connected to the mobile power supply.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another electronic device according to an embodiment of the present invention;
fig. 3 is a schematic view of a display interface of an electronic device according to an embodiment of the present invention;
fig. 4 is an external view of an electronic device and a vest according to an embodiment of the present invention;
fig. 5 is an external view of a thimble contact interface of an electronic device according to an embodiment of the present invention;
fig. 6 is a schematic view of an internal structure of a vest according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an internal structure of an electronic device and a vest according to an embodiment of the present invention;
fig. 8 is a flowchart illustrating a charging method for an electronic device according to an embodiment of the present invention;
fig. 9 is a connection circuit diagram of a pull-up circuit of an electronic device according to an embodiment of the present invention;
fig. 10 is a flowchart of an electronic device communication process provided by an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another electronic device according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another electronic device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1, an embodiment of the invention provides an electronic device 10, which includes an electrical load 101 and a battery 102. In a normal case, the battery 102 supplies power to the electrical load 101, so that the electronic device 10 performs corresponding functions. The power load 101 may specifically include a display screen, a processor, and other devices in the electronic device.
The electronic device 10 further comprises a charging circuit 103. Wherein the charging circuit 103 specifically includes: a conversion unit 1031, and a charging control unit 1032. Wherein the content of the first and second substances,
the input terminal of the conversion unit 1031 is connected to the charging interface of the electronic device 10, and the output terminal thereof is connected to the node VPH _ PWR, the input terminal of the charging control unit 1032, and the power input terminal of the electric load 101. An output terminal of the charge control unit 1032 is connected to the battery 102.
Specifically, the charging interface of the electronic device 10 may refer to an interface in the electronic device for connecting with an external power source and inputting the voltage of the external power source into the electronic device. For example, the charging interface of the electronic device 10 may be a charging pin on the USB interface of the electronic device 10, or may be another interface pin connected to the charging pin on the USB interface.
The conversion unit 1031 is configured to step down a voltage of an external power source connected from a charging interface of the electronic device 10, and output the voltage from an output terminal of the conversion unit 1031, so as to supply power to the electric load 101 and charge the battery 102 through the charging control unit 1032;
and a charging control unit 1032, configured to disconnect a path between the input terminal and the output terminal of the charging control unit 1032 after a preset condition is satisfied, and stop charging the battery 102.
For example, at present, the external power supply connected to the USB interface of the household electronic device is generally about 5V. Therefore, after the external power supply is connected to the charging interface, the connected external power supply needs to be stepped down. Specifically, the voltage of the external power source is reduced to 5V to 3V-4.4V by the converting unit 1031 in fig. 1. Then, the power load 101 is supplied and the battery 102 is charged through the VPH _ PWR node. At this time, the output current of the converting unit 1031 is the sum of the current consumption of the power load 101 and the charging current of the battery 102 (specifically, the average current of the current power load of the conventional smartphone is about 400mA, and the charging current of the battery is about 2000 mA). This results in inefficient use of the power from the external power source. Particularly, when the external power supply is a portable power supply, efficient use of electric power in the portable power supply is affected.
Furthermore, in the embodiment of the present invention, the charging control unit 1032 is provided between the VPH _ PWR node and the battery 102, and the charging control unit 1032 is enabled to disconnect the path between the input terminal and the output terminal of the charging control unit to stop charging the battery when the preset condition is satisfied. At this time, the current at the VPH _ PWR node is equal to the power consumption of the electrical load 101 (i.e., the current is reduced from about 1900mA to about 400 mA), so the path loss is greatly reduced.
In addition, after the path between the input terminal and the output terminal of the charge control unit 1032 is disconnected, the voltage of the VPH _ PWR node can be maintained at the level of the rated operation voltage (typically, 4.4V). Therefore, the voltage difference between the input terminal and the output terminal of the converting unit 1031 is the voltage difference VBUS-VPH _ PWR between the charging interface and the VPH _ PWR node at this time, which is lower than the voltage difference VBUS-VBAT between the charging interface and the positive electrode of the battery 102 (the voltage VBAT of the power supply input terminal of the battery 102 is between 3-4.4V). For example, if the voltage of the external power supply is 5V, VBUS-VPH _ PWR = 5V-4.4V; VBUS-VBAT =5V-VBAT, since VBAT can reach 4.4V when it is highest when the battery is fully charged, VBUS-VPH _ PWR is generally lower than VBUS-VBAT. Thus, since the voltage drop between the input terminal and the output terminal of the converting unit 1031 becomes small, the conversion efficiency of the converting unit 1031 is improved, and the power supply efficiency is improved.
Specifically, the conversion unit includes: the PWM driving module, the first MOS tube, the second MOS tube, the inductor and the first capacitor; the PWM driving module is respectively connected with the grid electrode of the first MOS tube and the grid electrode of the second MOS tube; the drain electrode of the first MOS tube is connected with one end of a capacitor, and the other end of the capacitor is grounded; the drain electrode of the first MOS tube is also connected with a charging interface; the source electrode of the first MOS tube is connected with the drain electrode of the second MOS tube, and the source electrode of the first MOS tube is also connected with the output end of the conversion unit through an inductor; the source electrode of the second MOS tube is grounded. The PWM driving module is used for driving the first MOS tube and the second MOS tube to be switched on and off, the first MOS tube, the second MOS tube, the capacitor and the inductor form a buck voltage reduction circuit, and the voltage VBUS of an external power supply accessed by the charging interface is converted into the specified voltage VPH _ PWR.
Further, the conversion unit further includes: a current path control module and a fourth MOS tube. The current path control module is connected with a grid electrode of the fourth MOS tube, and a drain electrode of the first MOS tube is connected with the charging interface through a source electrode and a drain electrode of the fourth MOS tube.
A charge control unit comprising: the charging control module and the third MOS tube; the charging control module is connected with a grid electrode of a third MOS tube, a drain electrode of the third MOS tube is connected with the output end of the conversion unit, and a source electrode of the third MOS tube is connected with the battery; and the charging control module is used for controlling the third MOS tube to be in a cut-off state after a preset condition is met.
Specifically, as shown in fig. 2, the converting unit 1031 specifically includes: the circuit comprises a Current path control module (Current path control), a PWM driving module (PWM drivers), a first MOS transistor Q1, a second MOS transistor Q2, a fourth MOS transistor Q4, an inductor L1 and a first capacitor C1. The PWM driving module is used for driving the Q1 and the Q2 to be switched on and off, the Q1, the Q2, the C1 and the L1 form a buck voltage reduction circuit, and the voltage VBUS of an external power supply connected to the charging interface is converted into the designated voltage VPH _ PWR. The current path control module controls the on and off of the Q4. The charging control unit 1032 specifically includes: a charge control module (charger control) and a third MOS transistor Q3. The charging control module is used for controlling the on-off of the Q3.
In addition, the electronic device 10 may further include a logic control module (logic control), and the logic control module is configured to control the current path control module, the PWM driving module, and the battery control module to operate. Specifically, the logic control module may control the PWM driving module to control on/off of Q1 and Q2 according to the voltage value of the battery 102, so as to control the voltage of the VPH _ PWR node. In addition, the logic control module also controls the battery control module to control the Q3 to be turned off after the preset condition is met.
In one implementation, the charging control unit 1032 is specifically configured to disconnect a path between the input and the output of the charging control unit 1032 when it is detected that the external power source is the mobile power source and it is detected that the power amount of the battery 102 is greater than the power amount threshold.
Illustratively, the remaining capacity of the battery 102 may be detected, for example, after the electronic device 10 is connected to a mobile power source. If the remaining power of the battery 102 is higher than the predetermined power (e.g., 30% remaining power), the input terminal and the output terminal of the charging control unit 1032 are disconnected, and the charging of the battery 102 is stopped. At this time, the mobile power supply supplies power only to the power load of the electronic device 10, so the current is small; meanwhile, the voltage of the VPH _ PWR node is high, so that the conversion efficiency of the conversion unit 1031 is high, and the power supply efficiency is improved. The mobile power supply can supply power to the electronic equipment 10 for a longer time, and the standby time and the endurance time of the electronic equipment 10 are prolonged.
Additionally, in another implementation, the user may also select when to have the external power source alone power the electronic device without charging the battery. Therefore, the charging control unit 1032 is also specifically configured to disconnect the path between the input terminal and the output terminal of the charging control unit 1032 when a preset operation by the user is detected.
In addition, in the embodiment of the invention, the situation of the residual capacity of the mobile power supply can be directly and clearly known by a user. The electronic device 10 provided by the embodiment of the present invention further includes a display module 104. The display module 104 is configured to display a circuit of the mobile power supply on a display interface of the electronic device when the external power supply is the mobile power supply.
For example, as shown in fig. 3, after acquiring the power information of the mobile power supply in some way, the electronic device displays the power of the mobile power supply on the interface of the mobile phone through the display module 104.
Specifically, in order to keep the display interface concise and beautiful, the circuit of the mobile power supply is displayed on the display interface of the electronic device, and the circuit is arranged at a position parallel to the position where the electric quantity of the battery 102 of the electronic device 10 is displayed.
In addition, in one implementation, the electronic device 10 provided by the embodiment of the invention can be used in cooperation with the mobile power supply 20 fixed on the electronic device 10. The portable power source that can be fixed to the electronic device 10 may be a vest that is fixed to the back of the electronic device 10. The shape of the vest can resemble an existing protective case for electronic equipment.
Illustratively, as shown in FIG. 4, electronic device 10 has a pin contact interface on the device back surface and a corresponding second pin contact interface on the inner surface of a vest 20a that mates with electronic device 10. Specifically, in practical application, the contact interface of the thimble on the electronic device 10 may be a metal groove. The contact interface of the thimble on the vest 20a may be a metal raised spring corresponding to the metal recess. The relationship of the pin contact interfaces on the electronic device 10 to the pin contact interfaces on the vest 20a may be similar to the relationship of a male-female connector. In addition, it should be noted that the contact of the thimble contact interface in the embodiment of the present invention may be in a circular shape, a square shape, or other shapes, and the present invention is not limited thereto.
The vest 20a may be mounted to the back of the electronic device 10 in use. After the vest 20a is mounted on the back of the electronic device 10, the vest 20a is coupled to the pin contact interface on the electronic device 10, thereby allowing power from the vest 20a to be transferred to the electronic device 10. The electronic device 10 may be a mobile phone, a tablet computer, or the like.
Illustratively, as shown in fig. 5, is a photograph of a pin contact interface on the back of an electronic device 10, which includes 10 contacts. In use, there are 10 ejector pin spring pieces at corresponding positions on the vest 20a for coupling with 10 contacts on the electronic device 10.
Specifically, table 1 below provides an interface definition of a thimble contact interface:
| pin number | Name of Pin | Description of the function | |
| 1 | VBUS | The back clip battery outputs power to the electronic device. 5V specification. | |
| 2 | HDQ | A one-wire electricity meter communication interface. | |
| 3 | DET | The electronic equipment detects the loading and unloading of the back splint battery, and the back splint battery is grounded through a resistor on a circuit. | |
| 4 | USB_D+ | A USB data signal. | |
| 5 | GND | The power ground and the signal ground are common. | |
| 6 | GND | The power ground and the signal ground are common. | |
| 7 | USB_D- | A USB data signal. | |
| 8 | EN | The electronic device enables the back-clip battery output VBUS. | |
| 9 | | OTG function | |
| 10 | VBUS | The back clip battery outputs power to the electronic device. 5V specification. |
TABLE 1
Fig. 6 is a schematic structural diagram of the mobile power supply 20 according to the embodiment of the present invention. In conjunction with the interface definitions of table 1, in fig. 6, the detection circuit is configured to send a detection signal to the electronic device 10 through the DET pin, so that the electronic device 10 detects the attachment or detachment of the portable power source 20. And the electricity meter chip is used for detecting the electricity quantity information of the battery of the mobile power supply 20 and sending the electricity quantity information to the electronic equipment 10 through the HDQ terminal pin. The main battery circuit in the portable power source 20 charges the electronic device 10 through VBUS, i.e., connects to a charging interface of the electronic device 10. The battery main circuit in the mobile power supply 20 also receives an enable signal of the electronic device 10 through the EN terminal pin, and starts supplying power to the electronic device 10 in response to the enable signal. In addition, the USB interface of the mobile power supply is connected through the USB _ D + terminal pin and the USB _ D-terminal pin of the thimble contact interface, so that the data transmission task of the electronic device 10 is completed through the USB interface of the mobile power supply 20.
The connection and operation modes of the electronic device 10 and the mobile power supply 20 are combined. As shown in fig. 7, in the embodiment of the present invention, the electronic device 10 further includes: the first USB interface, the first thimble contact interface and the power switch unit U2. After the mobile power source 20 is fixed on the electronic device, the first pin contact interface is used for coupling with a second pin contact interface on the mobile power source. The charging terminal pin of the first USB interface and the charging terminal pin of the first thimble contact interface are respectively connected to the power switch unit U2, and the power switch unit U2 is further connected to the charging interface. The position of the charging interface is exemplarily marked in fig. 7.
Specifically, as shown in fig. 7, the charging circuit 103 is integrated into a Power Management IC (PMIC) U1. The power switch unit U2 is connected to the charging circuit 103 via a charging interface.
And the power switch unit U2 is configured to, when the first thimble contact interface is coupled with the second thimble contact interface on the mobile power supply 20, turn on the charging terminal pin of the first thimble contact interface with the charging interface.
When the portable power source 20 is installed on the electronic device 10, the second pin contact interface is coupled to the first pin contact interface, so that the portable power source 20 outputs an external power voltage to the charging interface through the charging pin of the first pin contact interface.
For example, as shown in fig. 7, when the mobile power supply 20 is installed on the electronic device 10, the electronic device 10 detects whether the mobile power supply is installed through the DET pin of the first pin contact interface. After detecting that the mobile power supply is installed, the power switch U2 connects the VBUS terminal pin of the first thimble contact interface with the charging interface, so that the mobile power supply 20 can charge the electronic device 10 through the VBUS terminal pin.
In the above embodiment of the present invention, after the first pin contact interface of the electronic device 10 is coupled to the second pin contact interface of the mobile power supply 20, the power switch unit will conduct the charging pin of the first pin contact interface with the charging interface, so as to charge the mobile phone 10 by using the mobile power supply 20. Therefore, when the portable power source is not worn at ordinary times, the charging terminal pin of the first thimble contact interface and the charging interface are isolated and uncharged, and therefore the reliability of the circuit is guaranteed.
Further, as shown in fig. 7, the electronic device 10 further includes a USB switching unit U3. The first pin contact interface further includes a data transmission terminal pin, such as the USB _ D + terminal pin and the USB _ D-terminal pin. The data transmission terminal pin is used for being connected with a second USB interface on the mobile power supply 20, and the specific data transmission terminal pin USB _ D +, USB _ D-is connected with the second USB interface on the mobile power supply 20 through a second thimble contact interface.
And the USB switch unit U3 is respectively connected with the first USB interface, the first thimble contact interface and the data transmission terminal pin.
And the USB switch unit U3 is used for selecting one of the first USB interface or the first thimble contact interface according to a preset mode and executing a data interaction task of the electronic equipment.
In the above embodiment of the present invention, it is considered that after the portable power source 20 is installed, the first USB interface carried by the electronic device 10 may be blocked by the portable power source 20, and thus is inconvenient to use. Therefore, by providing the USB switching unit U3 in the electronic device 10, the data interaction task can be completed by using the second USB interface on the portable power source 20 after the portable power source 20 is installed.
In one implementation, as shown in fig. 7, in the electronic device 10, the first pin contact interface further includes a DET detection pin and an EN enable pin.
When the DET detection pin receives the preset signal, the electronic device 10 determines that the first thimble contact interface is coupled with the second thimble contact interface on the mobile power supply 20;
after determining that the first thimble contact interface is coupled with the second thimble contact interface, the electronic device sends an enable signal to the mobile power supply 20 through the EN enable pin, so that the mobile power supply 20 outputs an external power supply voltage to the charging interface through the charging pin VBUS of the first thimble contact interface in response to the enable signal, and charges the electronic device 10.
In one implementation, as shown in fig. 7, the first thimble contact interface further includes an HDQ communication terminal pin; the electronic device 10 obtains the power information of the mobile power supply 20 through the HDQ communication terminal pin. So as to display the power information of the mobile power supply 20 on the interface of the electronic device.
According to the electronic equipment provided by the embodiment of the invention, whether the external power supply simultaneously charges the battery of the electronic equipment and supplies power to the load of the electronic equipment or the external power supply only supplies power to the load of the electronic equipment after the battery charging is stopped can be selected according to requirements. For example, when the external power source is a mobile power source, the charging of the battery can be selected to be stopped, and only the external power source supplies power to the load of the electronic device, so as to improve the utilization efficiency of the electric quantity in the mobile power source; when the external power supply is the power adapter, the battery of the electronic equipment is charged and the load of the electronic equipment is supplied with power at the same time, so that the battery is charged as soon as possible.
It should be noted that, in the above embodiments of the present invention, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. For example, the converting unit 1031 and the charging control unit 1032 may respectively realize corresponding functions by two independent hardware components, or the converting unit and the charging control unit may be operated by the same hardware component. Example two:
the embodiment of the present invention further provides a charging method for an electronic device, which is applied to charging the electronic device 10 provided in the first embodiment. As shown in fig. 8, the method includes:
s301, the voltage of an external power supply connected to a charging interface of the electronic equipment is reduced, so that the electronic equipment is charged to an electric load and the battery is charged.
And S302, stopping charging the battery after the preset condition is met.
Optionally, S302 may specifically include:
and S302a, when the external power supply is detected to be the mobile power supply and the electric quantity of the battery is detected to be larger than the electric quantity threshold value, stopping charging the battery.
Or, S302 may specifically further include:
s302b, when the preset operation by the user is detected, the charging of the battery is stopped.
The charging method for electronic equipment provided by the embodiment of the present invention can refer to the corresponding content of the first embodiment, and thus, the technical problems, specific implementation steps, and technical effects achieved by the charging method for electronic equipment provided by the embodiment of the present invention are not described herein again.
The electronic device is connected with the mobile battery on a hardware circuit through an external contact, and the specific connection is a thimble contact interface illustrated in fig. 4.
In another embodiment, the peripheral bus has a requirement of requiring a pull-up resistor, such as an I2C bus protocol, an HDQ bus protocol, and the like, and the part of the circuit is required to have a certain voltage, but the part of the circuit exposed to the environment for a long time is extremely easy to corrode and damage, thereby affecting the service life of the electronic device product.
In the thimble contact interface, a communication pin for transmitting bus protocol data between an electronic device and a mobile battery is susceptible to corrosion and damage if a thimble contact corresponding to the communication pin has a voltage.
The mobile battery is connected with the electronic device by means of the external contacts shown in fig. 4, and the electronic device can detect the assembling and disassembling states of the mobile battery by the high-low level signal of the general input and output of the processor GPIO in the electronic device;
the assembling and disassembling state of the mobile battery is processed by a CPU of the electronic device through GPIO signals, for example, in the circuit design, a default state GPIO pin signal is high level, when the back clip is assembled, the state GPIO pin signal is pulled down and changed into low level, and after the mobile battery is disassembled, the state GPIO pin is restored to the default high level state. And the CPU of the electronic device judges whether the current state of the mobile battery is assembled on the electronic device or disassembled from the electronic device according to the current signal state of the GPIO.
In the 10Pin contact interface, one of the contacts may be used as a detection Pin, such as the DET Pin in fig. 7, and directly connected to the processor U4 inside the electronic device, and the other contact may be used as a communication Pin, such as the communication Pin of the HDQ bus protocol in fig. 7, and also directly connected to the processor U4 inside the electronic device.
When the processor U4 of the electronic device determines that the mobile battery is currently mounted on or dismounted from the electronic device according to the state of the DET pin, and when the mobile battery is currently mounted on the electronic device, the processor U4 enables the communication pin of the HDQ bus protocol to be switched on and has an operating voltage of 1.8-1.9 volts.
The electric quantity meter chip is integrated in an internal circuit of the mobile battery and connected with an internal battery core of the mobile battery, and the attribute states of the battery core in the mobile battery, including the current, voltage, electric quantity, temperature, over-voltage and other safety states of the mobile battery, can be acquired through the electric quantity meter chip. As shown in fig. 7, the fuel gauge chip integrated in the internal circuit of the mobile battery is connected to the electronic device processor U4 in an HDQ bus manner, and the electronic device processor U4 reads the attribute state of the mobile battery cell through a protocol defined by the HDQ bus, and is configured to display attributes such as the quantity of electricity, voltage, and current of the mobile battery in a display screen interface of the electronic device.
Fig. 9 is a connection diagram of a communication pin and a processor in an electronic device. The hardware bus pull-up resistor circuit is designed such that a bus pull-up resistor R is connected with a Vsys power supply on the electronic device side through an LDO (low dropout regulator), and an enable pin of the LDO is connected with a CPU main chip through a GPIO (general purpose input/output).
Through the circuit design, whether the Vsys pull-up power supply is effective or not can be controlled through the GPIO signal of the CPU main chip. When the control GPIO outputs a low level signal, the LDO power supply is turned off, the pull-up resistor R has no effective voltage, and the bus does not have a communication function at the moment. When the control GPIO outputs a high-level signal, the LDO power supply enables output, the pull-up resistor R is connected with effective voltage, and at the moment, the bus communication function is normal.
The loading or dismounting state of the mobile battery is monitored by monitoring a mobile battery detection signal, when the mobile battery is detected to be assembled, the output of the LDO is enabled by a GPIO signal, so that the bus pull-up resistor R is connected with an effective voltage, the communication function of a bus protocol is ensured, and the mobile phone can be ensured to normally read the attribute state of the mobile battery; when the mobile battery is detected to be detached, the output of the LDO is turned off through the GPIO signal, so that no effective voltage of a pull-up resistor R is ensured, and the use reliability and safety of the contact in the external environment are ensured.
The bus protocol can be a bus mode such as I2C, HDQ, etc., and mainly aims at a bus mode that an external pull-up resistor is required to be added explicitly in the bus protocol, such as I2C, HDQ, and the bus mode can ensure normal communication only on the premise of having the external pull-up resistor, otherwise normal data communication cannot be performed.
Because the mobile battery is physically connected with the electronic equipment by the external contact, the external contact comprises a bus protocol signal, if the contact used by the bus protocol signal is always kept in an external pull-up state, a certain voltage is carried on the contact, and for the contact exposed in the external environment for a long time, if the contact is carried with a certain voltage, the contact is very easy to corrode and damage, and the use reliability and safety of the equipment are reduced.
The contact point of the electronic device side which is in bus connection with the mobile battery is provided with voltage only under the condition that the mobile battery is assembled, and is not provided with voltage under the condition that the mobile battery is not assembled, as shown in fig. 10, the assembling or unloading state of the mobile battery is monitored at any time, so that the external pull-up circuit of the contact point is dynamically controlled, the purpose of ensuring the use reliability and safety of the contact point is achieved, and only under the condition that the mobile battery is loaded, a high-level signal is output by controlling a GPIO (general purpose input/output) to enable the LDO power supply to be pulled up to output, the electronic device and the mobile battery are communicated, and the electronic device reads various state signals of the mobile battery. And under the condition that the mobile battery is detached, the GPIO is controlled to output a low level signal, and the output of the pull-up LDO power supply is closed.
In the case of an integrated unit, fig. 11 shows a schematic diagram of a possible structure of the electronic device involved in the above-described embodiment. The electronic device 40 includes: a processing module 401, a communication module 402 and a storage module 403. The processing module 401 is configured to control and manage the actions of the electronic device 40, for example, the processing module 401 is configured to support the electronic device 40 to execute the content executed by the charging circuit 103 in fig. 1. The communication module 402 is used to support communication of the electronic device 40 with other entities. The memory module 403 is used for storing program codes and data of the electronic device.
The processing module 401 may be a processor or a controller, and may be, for example, a certain type of buck charging chip, a Central Processing Unit (CPU), a general purpose processor (CPU), a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module 402 may be a transceiver, a transceiving circuit or a communication interface, etc. The storage module 403 may be a memory.
When the processing module 401 is a processor as shown in fig. 12, the communication module 402 is a transceiver as shown in fig. 12, and the storage module 403 is a memory as shown in fig. 12, the electronic device according to the embodiment of the present invention may be the following electronic device 50.
Referring to fig. 12, the electronic device 50 includes: a processor 501, a transceiver 502, a memory 503, and a bus 504.
The processor 501, the transceiver 502 and the memory 503 are connected to each other through a bus 504; the bus 504 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The Memory 503 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.
The memory 503 is used for storing application program codes for executing the present invention, and is controlled by the processor 501. The transceiver 502 is used for receiving contents input by an external device, and the processor 501 is used for executing application program codes stored in the memory 503, thereby implementing the charging method of the electronic device in the embodiment of the present invention.
It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided by the present invention, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the invention are all or partially effected when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An electronic device comprising a processor, a memory, and a battery, the electronic device further comprising:
the mobile power supply is used for supplying power to the electronic equipment or charging a battery of the electronic equipment;
the contact interface comprises a detection terminal pin used for detecting that the mobile power supply is connected to the electronic equipment;
the detection terminal pin is connected with the processor and sends the detected preset signal to the processor;
the contact interface comprises a communication terminal pin, and the communication terminal pin is used for data communication between the mobile power supply and the electronic equipment after the mobile power supply is connected to the electronic equipment;
the communication terminal pin is connected to the processor through a pull-up resistor;
the processor accesses the pull-up resistor to the power supply terminal if receiving a preset signal of the detection terminal pin, the communication terminal pin is in a working state with voltage, does not access the pull-up resistor to the power supply terminal if not receiving the preset signal of the detection terminal pin, and the communication terminal pin is in a state without voltage;
the charging control system comprises a conversion unit and a charging control unit, wherein the input end of the conversion unit is connected with a charging interface of electronic equipment, the output end of the conversion unit is connected with the input end of the charging control unit and the power supply input end of an electric load to a node VPH _ PWR, and the output end of the charging control unit is connected with a battery;
after the electronic equipment is connected with the mobile power supply, the residual electric quantity condition of the battery is detected, if the residual electric quantity of the battery is higher than the preset electric quantity, the input end and the output end of the charging control unit are disconnected, the battery is stopped to be charged, the mobile power supply only supplies power to an electric load of the electronic equipment, and the current at the VPH _ PWR node is equal to the power consumption of the electric load and is used for reducing the path loss.
2. The electronic device of claim 1, further comprising:
the communication terminal is in particular an HDQ bus or an I2C bus.
3. The electronic device of claim 1, further comprising:
the communication terminal pin is connected to the power supply end on one hand and is connected to GPIO general input and output of the processor on the other hand through a pull-up resistor and an LDO low dropout linear regulator connected in series.
4. The electronic device of claim 3, further comprising:
the processor receives a preset signal of the detection terminal pin, configures GPIO general input/output of the processor into a high-level signal, enables the LDO to output, accesses the pull-up resistor to a power supply terminal, and enables the communication terminal pin to be in a working state with voltage;
the processor does not receive the preset signal of the detection terminal pin, the GPIO general input/output of the processor is configured to be a low-level signal, the LDO is turned off to output, the pull-up resistor is not connected to a power supply terminal, and the communication terminal pin is in a state without voltage.
5. The electronic device of claim 2 or 4, further comprising:
the communication terminal pin is an HDQ bus, the voltage range on the HDQ bus is 1.8-1.9 volts, and the communication terminal pin is communicated with the HDQ bus of the mobile power supply to obtain the current electric quantity information of the mobile power supply.
6. A communication method of an electronic device, comprising:
the electronic equipment is connected with an external mobile power supply through a contact interface, and the mobile power supply supplies power to the electronic equipment or charges a battery of the electronic equipment;
the contact interface detects that the mobile power supply is connected to the electronic equipment through a detection terminal pin;
the detection terminal pin sends a detected preset signal to a processor, and the detection terminal pin is connected with the processor;
if the processor receives a preset signal of the detection terminal pin, a pull-up resistor is connected to a power supply terminal, a communication terminal pin is connected to the processor through the pull-up resistor, and the communication terminal pin is in a working state with voltage and used for data communication between the electronic equipment and the mobile power supply;
if the processor does not receive the preset signal of the detection terminal pin, the pull-up resistor is not connected to a power supply terminal, and the communication terminal pin is in a state without voltage;
after the electronic equipment is connected with the mobile power supply, the residual electric quantity condition of the battery is detected, if the residual electric quantity of the battery is higher than the preset electric quantity, the input end and the output end of the charging control unit are disconnected, the battery charging is stopped, the mobile power supply only supplies power for the electric load of the electronic equipment, the current at the VPH _ PWR node is equal to the power consumption of the electric load and is used for reducing the path loss, the input end of the conversion unit is connected with the charging interface of the electronic equipment, the output end of the conversion unit is connected with the input end of the charging control unit and the power input end of the electric load and is connected with the VPH _ PWR node, and the output end of the charging control unit is connected with the battery.
7. The electronic device communication method according to claim 6,
the communication terminal is in particular an HDQ bus or an I2C bus.
8. The electronic device communication method according to claim 6,
the communication terminal pin is connected to the power supply end on one hand and is connected to GPIO general input and output of the processor on the other hand through a pull-up resistor and an LDO low dropout linear regulator connected in series.
9. The electronic device communication method according to claim 8,
the processor receives a preset signal of the detection terminal pin, configures GPIO general input/output of the processor into a high-level signal, enables the LDO to output, accesses the pull-up resistor to a power supply terminal, and enables the communication terminal pin to be in a working state with voltage;
the processor does not receive the preset signal of the detection terminal pin, the GPIO general input/output of the processor is configured to be a low-level signal, the LDO is turned off to output, the pull-up resistor is not connected to a power supply terminal, and the communication terminal pin is in a state without voltage.
10. The electronic device communication method according to claim 9,
the communication terminal pin is an HDQ bus, the voltage on the HDQ bus is in the range of 1.8-1.9 volts,
and the communication terminal pin is communicated with an HDQ bus of the mobile power supply to acquire the current electric quantity information of the mobile power supply.
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| CN201910473448.8A Active CN110098652B (en) | 2019-01-18 | 2019-05-31 | Mobile phone, mobile phone main body device and mobile phone endurance device |
| CN201911277043.3A Active CN111463842B (en) | 2019-01-18 | 2019-12-12 | Electronic equipment and communication method thereof |
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| CN201910473448.8A Active CN110098652B (en) | 2019-01-18 | 2019-05-31 | Mobile phone, mobile phone main body device and mobile phone endurance device |
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Also Published As
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| CN110098652A (en) | 2019-08-06 |
| CN111463842A (en) | 2020-07-28 |
| CN110098652B (en) | 2021-05-07 |
| CN110112810A (en) | 2019-08-09 |
| CN109802457A (en) | 2019-05-24 |
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