CN217904074U

CN217904074U - Electronic device

Info

Publication number: CN217904074U
Application number: CN202222161732.1U
Authority: CN
Inventors: 王祥
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-11-25
Anticipated expiration: 2032-08-16

Abstract

The application discloses electronic equipment includes: the charging system comprises a charging interface, a first charging chip, a second charging chip, a charging control module, a discharging control module, an application processor and a battery, wherein a first port of the first charging chip is connected with the charging interface, a second port of the first charging chip is connected with the application processor, and a third port of the first charging chip is connected with the battery through the charging control module and the discharging control module respectively; and the first port of the second charging chip is connected with the charging interface, and the second port of the second charging chip is connected with the battery.

Description

Electronic device

Technical Field

The application relates to the technical field of charging, in particular to an electronic device.

Background

The endurance and stability of the electronic product are greatly related to the performance of the battery, and the over-discharge of the battery is that the battery continues to discharge after the battery normally discharges to cut-off voltage. Because the structure of the negative electrode can be kept stable only by keeping a certain amount of lithium ions, more lithium ions are migrated out due to overdischarge, the stable structure of the negative electrode is damaged, and the negative electrode is irreversibly damaged.

In the related art, a charging chip in an electronic device includes a main charging chip and a sub-charging chip, when the electronic device is charged, the main charging chip supplies power to an Application Processor (AP) and a battery, where the main charging chip supplies power to the Application Processor may be understood as supplying power to a system by the main charging chip, the sub-charging chip supplies power to the battery, and the main charging chip mainly receives the influence of a battery voltage on the power supply to the Application Processor. However, when the electronic device is charged after the battery is over-discharged, the system voltage provided by the main charging chip to the application processor is also pulled down due to the fact that the battery voltage is lower than the starting voltage of the electronic device, and therefore the system voltage is not enough to support the starting of the electronic device, that is, the electronic device cannot be started normally.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to provide electronic equipment, and the problem that the electronic equipment cannot be normally started when a battery is over-discharged can be solved.

In a first aspect, an embodiment of the present application provides an electronic device, which includes:

a charging interface, a first charging chip, a second charging chip, a charging control module, a discharging control module, an application processor and a battery,

the first port of the first charging chip is connected with the charging interface, the second port of the first charging chip is connected with the application processor, and the third port of the first charging chip is connected with the battery through the charging control module and the discharging control module respectively;

the first port of the second charging chip is connected with the charging interface, and the second port of the second charging chip is connected with the battery;

under the condition that the charging interface is connected with an external power supply and the voltage of the battery is less than the starting voltage of the electronic equipment, the discharging control module and the charging control module are both in a disconnected state, so that the application processor is powered through the first charging chip, and the battery is charged through the second charging chip;

and under the condition that the charging interface is connected with an external power supply and the voltage of the battery is greater than or equal to the starting voltage of the electronic equipment, the discharging control module is in a disconnected state, the charging control module is in a connected state, so that the application processor and the battery are supplied with power through the first charging chip, and the battery is charged through the second charging chip.

In the embodiment of the present application, the provided electronic device includes a charging interface, a first charging chip, a second charging chip, a charging control module, a discharging control module, an application processor, and a battery, where the charging control module and the discharging control module are both in a disconnected state when the charging interface is connected to an external power supply and a voltage of the battery is less than a power-on voltage of the electronic device, where the first charging chip supplies power to the application processor, and the second charging chip supplies power to the battery, so as to power on the electronic device. Namely, by adding the charging control circuit and the discharging control circuit, when the electronic equipment is charged under the condition that the battery is over-discharged, the isolation system supplies power and the battery supplies power, so that the first charging chip only supplies power for the application processor, and the second charging chip only supplies power for the battery, thereby ensuring that the system power supply voltage is enough to support the startup, and realizing the normal startup of the electronic equipment.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

fig. 2 is a second schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived from the embodiments in the present application by a person skilled in the art, are within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The embodiment of the application provides an electronic device which can be a mobile phone, a tablet computer, a notebook computer, a palm computer, a wearable device and the like.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device 10 includes: the charging interface 110, the first charging chip 120, the second charging chip 130, the charging control module 140, the discharging control module 150, the application processor 160, and the battery 170. The first port of the first charging chip 120 is connected to the charging interface 110, the second port of the first charging chip 120 is connected to the application processor 160, and the third port of the first charging chip 120 is connected to the battery 170 through the charging control module 140 and the charging control module 150, respectively. The first port of the second charging chip 130 is connected to the charging interface 110, and the second port of the second charging chip 130 is connected to the battery 170.

The charging interface 110 is a usb type C interface. The charging interface 110 may be connected to an external power source to charge the electronic device.

The first charging chip 120 is a main charging chip, the first port of the first charging chip 120 is a VBUS terminal, the second port of the first charging chip 120 is an SYS terminal, and the third port of the first charging chip 120 is a BAT terminal. Referring to fig. 2, the charging interface 110 may be connected to an external power source to charge the electronic device, the first port (VBUS terminal) of the first charging chip 120 is connected to the charging interface 110, and the second port (SYS terminal) of the first charging chip 120 is connected to the application processor 160, so as to provide the system voltage Vsys for the application processor 160 through the first charging chip 120. The third port (BAT terminal) of the first charging chip 120 is connected to the positive electrode of the battery 170, and the negative electrode of the battery 170 is grounded, so as to supply power to the battery 170 through the first charging chip. It is understood that the electronic device 10 may further include an overvoltage protection module (OVP) (not shown in the figure), and the charging interface 110 may be connected to the first port (VBUS terminal) of the first charging chip 120 and the first port (VBUS terminal) of the second charging chip 130 through the overvoltage protection module.

In this embodiment, when the charging interface 110 is connected to an external power source and the voltage of the battery 170 is less than the power-on voltage of the electronic device 10, the discharging control module 150 and the charging control module 140 are both in an off state, so as to supply power to the application processor 160 through the first charging chip 120 and charge the battery 170 through the second charging chip 130.

In a specific embodiment, when the electronic device is in the power-off state, the external power source may be connected to the charging interface 110 to charge the electronic device. In the case where the battery is over-discharged such that the voltage of the battery is less than the power-on voltage of the electronic device, the charging control module 140 and the discharging control module 150 are both in the off state. In the case that the charging control module 140 and the discharging control module 150 are both in the off state, the first charging chip 120 supplies power to the application processor 160, and the second charging chip 130 supplies power to the battery 170, so as to start the electronic device. That is, when the electronic device is charged after the battery is over-discharged, the system power supply and the battery power supply are isolated, so that the first charging chip 120 only supplies power to the application processor 160, and the second charging chip 130 only supplies power to the battery 170, which ensures that the system power supply voltage is sufficient to support the electronic device to start up, and thus the electronic device is immediately started up.

It is understood that, in the case where the discharging control module 150 is in the off state, the battery 170 does not supply power to the application processor 160 through the first charging chip 120, that is, the path of the battery 170 supplying power to the application processor 160 through the first charging chip 120 is cut off. In the case that the charging control module 140 is in the off state, the first charging chip 140 does not supply power to the battery 170, that is, the path for the first charging chip 120 to supply power to the battery 170 is cut off, and the first charging chip 140 only supplies power to the application processor 160.

In this embodiment, when the charging interface 110 is connected to an external power source and the voltage of the battery 170 is greater than or equal to the power-on voltage of the electronic device 10, the discharging control module 150 is in an off state, and the charging control module 140 is in an on state, so as to supply power to the application processor 160 and the battery 170 through the first charging chip 120 and charge the battery 170 through the second charging chip 130.

According to the embodiment of the application, the provided electronic device comprises a charging interface, a first charging chip, a second charging chip, a charging control module, a discharging control module, an application processor and a battery, wherein the charging control module and the discharging control module are both in a disconnected state under the condition that the charging interface is connected with an external power supply and the voltage of the battery is smaller than the starting voltage of the electronic device, the first charging chip supplies power to the application processor, and the second charging chip supplies power to the battery so as to start the electronic device. Namely, by adding the charging control circuit and the discharging control circuit, when the electronic equipment is charged under the condition that the battery is over-discharged, the isolation system supplies power and the battery supplies power, so that the first charging chip only supplies power for the application processor, and the second charging chip only supplies power for the battery, thereby ensuring that the system power supply voltage is enough to support the startup, and realizing the normal startup of the electronic equipment.

In one embodiment, referring to fig. 2, the discharging control module 150 includes a first switch Q1, a control terminal of the first switch Q1 is connected to the first port (VBUS terminal) of the first charging chip 120, a first terminal of the first switch Q1 is connected to the third port (BAT) of the first charging chip 120, and a second terminal of the first switch Q1 is connected to the battery 170.

When the charging interface 110 is connected to an external power source and the voltage of the battery 170 is less than the power-on voltage of the electronic device 10, the first switch Q1 is in an off state.

The first switch Q1 is a PMOS tube, a grid electrode of the PMOS tube is a control end of the first switch Q1, a drain electrode of the PMOS tube is a first end of the first switch Q1, and a source electrode of the PMOS tube is a second end of the first switch Q1.

Referring to fig. 2, the discharging control module 150 further includes a first resistor R5, a first end of the first resistor R5 is grounded, a second end of the first resistor R5 is respectively connected to the control end of the first switch Q1 and the first port (VBUS end) of the first charging chip 120, and the control end of the first switch Q1 can be ensured to be always kept at a low level in a default state through the first resistor R5.

In this embodiment, referring to fig. 2, when the electronic device is in a shutdown state and the charging interface 110 is connected to the external power source, the first port (VBUS terminal) of the first charging chip 120 is at a high level, at this time, the gate of the first switch Q1 is at a high level, the first switch Q1 is turned off, and at this time, the battery 170 does not supply power to the application processor 160 through the third port (BAT) of the first charging chip 120.

It can be understood that, when the electronic device is normally used and the charging interface 110 is not connected to the external power source, the first port (VBUS terminal) of the first charging chip 120 is at a low level, at this time, the gate of the first switch Q1 is at a low level, and the gate of the first switch Q1 is kept at the low level by pulling down the first resistor R5, the first switch Q1 is turned on, and the battery 170 defaults to supply power to the application processor 160 through the first switch Q1 and the third port (BAT terminal) of the first charging chip 120.

In one embodiment, the charging control module 140 includes a second switch Q2 and a third switch Q3, a first terminal of the second switch Q2 is connected to the third port (BAT terminal) of the first charging chip 120, a second terminal of the second switch Q2 is connected to the battery 170, a control terminal of the second switch Q2 is connected to the first terminal of the third switch Q3, a second terminal of the third switch Q3 is grounded, and a control terminal of the third switch Q3 is connected to the application processor 160.

When the charging interface 110 is connected to an external power source and the voltage of the battery 170 is less than the power-on voltage of the electronic device 10, the second switch Q2 and the third switch Q3 are both in an off state.

The second switch Q2 is a PMOS transistor, a gate of the PMOS transistor is a control end of the second switch Q2, a source of the PMOS transistor is a first end of the second switch Q2, and a drain of the PMOS transistor is a second end of the second switch Q2. The third switch Q3 is an NMOS transistor, a gate of the NMOS transistor is a control end of the third switch Q3, a source of the NMOS transistor is a first end of the third switch Q3, and a drain of the NMOS transistor is a second end of the third switch Q3.

Referring to fig. 2, the charging control module 120 further includes a second resistor R6, a control terminal of the second switch Q2 is connected to a third port (BAT terminal) of the first charging chip 120 through the second resistor R6, and the control terminal of the second switch Q2 can be guaranteed to always maintain a high level in a default state through the second resistor R6. It can be understood that, when the GPIO1 of the application processor 160 outputs a low level in the default state, and controls the third switch Q3 to be turned off, the gate and the source of the second switch Q2 are pulled up by the second resistor R6 so that Vgs is always smaller than the on voltage of the second switch Q2, the second switch Q2 is turned off, and the third port (BAT terminal) of the first charging chip 120 and the positive electrode of the battery 170 are turned off.

In this embodiment, when the battery 170 is in the over-discharge state, so that the voltage of the battery 170 is lower than the power-on voltage of the electronic device 10, the GPIO1 of the application processor 160 outputs a low level, and the second switch Q2 and the third switch Q3 are turned off.

Specifically, referring to fig. 2, the electronic device is in a shutdown state, and when the charging interface 110 is connected to the external power supply, the first port (VBUS end) of the first charging chip 120 is at a high level, at this time, the gate of the first switch Q1 is at the high level, the first switch Q1 is turned off, and at this time, the battery 170 does not supply power to the application processor 160 through the third port (BAT) of the first charging chip 120. When the voltage of the battery 170 is greater than the power-on voltage of the electronic device 10, the GPIO1 (General-Purpose Input/Output 1) of the application processor 160 outputs a high level, and the second switch Q2 and the third switch Q3 are turned on. Here, the first charging chip 120 supplies power to the application processor 160 and the battery 170 at the same time, the second charging chip 130 supplies power to the battery 170, and the electronic device can be immediately turned on.

Specifically, the electronic device is in a shutdown state, and when the charging interface 110 is connected to the external power supply, the first port (VBUS end) of the first charging chip 120 is at a high level, at this time, the gate of the first switch Q1 is at the high level, the first switch Q1 is turned off, and at this time, the battery 170 does not supply power to the application processor 160 through the third port (BAT) of the first charging chip 120. In the case where the battery 170 is in the over-discharge state such that the voltage of the battery 170 is less than the turn-on voltage of the electronic device 10, the GPIO1 of the application processor 160 outputs the low level, and the second switch Q2 and the third switch Q3 are turned off. Here, the first charging chip 120 only supplies power to the application processor 160, the second charging chip 130 only supplies power to the battery 170, the charging path between the first charging chip 120 and the battery 170 is cut off, and the electronic device can be normally powered on due to the complementary effect. When the voltage of the battery 170 is charged to be greater than the power-on voltage of the electronic device 10, the GPIO1 of the application processor 160 outputs a high level, the second switch Q2 and the third switch Q3 are turned on, and at this time, the first charging chip 120 charges the application processor 160 and the battery 170 at the same time, and the second charging chip 130 charges the battery 170.

It can be understood that the electronic device may be directly powered on when the battery is over-discharged, and after the electronic device is powered on, the first prompt information may be output on a display interface of the electronic device, where the first prompt information is used to prompt the state of the battery, for example, when the voltage of the battery is less than the power-on voltage of the electronic device, the state of charge of the battery is displayed according to a negative number.

It is understood that when the first charging chip 120 only supplies power to the application processor 160, a second prompt message may also be output on the display interface of the electronic device, wherein the second prompt message is used for prompting the user not to remove the external power source. When the first charging chip 120 supplies power to the application processor 160 and the battery 170 at the same time, a third prompt message may be output on the display interface of the electronic device, where the third prompt message is used to prompt the user to safely unplug the charging device.

In one embodiment, referring to fig. 2, the electronic device 20 further includes a first protection module 180 and a second protection module 190.

A first terminal of the first protection module 180 is connected to a fourth port (TS terminal) of the first charging chip 120, and a second terminal of the first protection module 180 is grounded.

A first terminal of the second protection module 190 is connected to a third port (TS terminal) of the second charging chip 130, and a second terminal of the second protection module 190 is grounded.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one.. Said.", it is not intended to exclude that an additional identical element is present in a process, method, article or apparatus that comprises the same element.

While the present disclosure has been described with reference to the embodiments illustrated in the drawings, which are intended to be illustrative rather than restrictive, it will be apparent to those of ordinary skill in the art in light of the present disclosure that many more modifications may be made without departing from the spirit of the disclosure and the scope of the appended claims.

Claims

1. An electronic device, comprising: a charging interface, a first charging chip, a second charging chip, a charging control module, a discharging control module, an application processor and a battery,

under the condition that the charging interface is connected with an external power supply and the voltage of the battery is less than the starting voltage of the electronic equipment, the discharging control module and the charging control module are both in a disconnected state, the application processor is powered through the first charging chip, and the battery is charged through the second charging chip;

and under the condition that the charging interface is connected with an external power supply and the voltage of the battery is greater than or equal to the starting voltage of the electronic equipment, the discharging control module is in a disconnected state, the charging control module is in a connected state, the application processor and the battery are powered through the first charging chip, and the battery is charged through the second charging chip.

2. The electronic device of claim 1, wherein the discharge control module comprises a first switch,

the control end of the first switch is connected with the first port of the first charging chip, the first end of the first switch is connected with the third port of the first charging chip, and the second end of the first switch is connected with the battery;

and under the condition that the charging interface is connected with an external power supply and the voltage of the battery is less than the starting voltage of the electronic equipment, the first switch is in a disconnected state.

3. The electronic device of claim 2, wherein the discharge control module further comprises a first resistor,

the first end of the first resistor is grounded, and the second end of the first resistor is connected with the control end of the first switch.

4. The electronic device of claim 2, wherein the first switch is a PMOS transistor,

the grid electrode of the PMOS tube is the control end of the first switch, the drain electrode of the PMOS tube is the first end of the first switch, and the source electrode of the PMOS tube is the second end of the first switch.

5. The electronic device of claim 1, wherein the charge control module comprises a second switch and a third switch,

a first end of the second switch is connected with a third port of the first charging chip, a second end of the second switch is connected with the battery, a control end of the second switch is connected with a first end of the third switch, a second end of the third switch is grounded, and a control end of the third switch is connected with the application processor;

and under the condition that the charging interface is connected with an external power supply and the voltage of the battery is less than the starting voltage of the electronic equipment, the second switch and the third switch are both in an off state.

6. The electronic device of claim 5, wherein the charging control module further comprises a second resistor,

and the control end of the second switch is connected with the third port of the first charging chip through the second resistor.

7. The electronic device of claim 5, wherein the second switch is a PMOS transistor,

the grid electrode of the PMOS tube is the control end of the second switch, the drain electrode of the PMOS tube is the first end of the second switch, and the source electrode of the PMOS tube is the second end of the second switch.

8. The electronic device of claim 5, wherein the third switch is an NMOS transistor,

the grid electrode of the NMOS tube is the control end of the third switch, the source electrode of the NMOS tube is the first end of the third switch, and the drain electrode of the NMOS tube is the second end of the third switch.

9. The electronic device of claim 1, wherein the charging interface is a communication serial bus type-C interface.

10. The electronic device of claim 1, further comprising a first protection module and a second protection module,

the first end of the first protection module is connected with the fourth port of the first charging chip, and the second end of the first protection module is grounded;

and the first end of the second protection module is connected with the third port of the second charging chip, and the second end of the second protection module is grounded.