CN115686165A - Mobile device capable of avoiding accidental shutdown and control method - Google Patents

Abstract

A mobile device and a control method for avoiding unexpected shutdown are provided, which comprises: a battery core, a controller, and an interface element. The controller may define a first delay time and a second delay time, wherein the first delay time is related to over-discharge current protection of the battery cell, and the second delay time is related to over-voltage protection of the battery cell. When a plug of a power supply is pulled out of the interface element, the controller detects the health state of the battery core. The controller may compare the health status to a first threshold ratio and a second threshold ratio. Then, the controller can extend the first delay time and the second delay time according to a first multiple, a second multiple, or a third multiple.

Description

Mobile device and control method for avoiding accidental shutdown

technical field

The present invention relates to a mobile device, in particular to a mobile device capable of avoiding accidental shutdown.

Background technique

Laptop or tablet PCs usually require battery components, however, the battery will gradually deteriorate after prolonged use and may cause unexpected shutdown of the computer device. In view of this, it is necessary to propose a new solution to overcome the difficulties faced by previous technologies.

Contents of the invention

In a preferred embodiment, the present invention provides a mobile device for preventing unexpected shutdown, selectively coupled to a power supply, and comprising: a battery cell; a controller defining a first delay time and a second delay time Time, wherein the first delay time is about the over-discharge current protection of the battery cell, and the second delay time is about the over-voltage protection of the battery cell; and an interface element, including a detection pin, wherein when the power supply When a plug of the supplier is pulled out from the interface element, the detection pin notifies the controller, so that the controller detects a health state of the battery cell; wherein if the health state is better than a first critical ratio , then the controller will extend the first delay time and the second delay time according to a first multiple; wherein if the health state is between the first critical ratio and a second critical ratio, the controller The first delay time and the second delay time will be extended according to a second multiple; wherein if the state of health is worse than the second critical ratio, the controller will extend the first delay time according to a third multiple and the second delay time.

In some embodiments, the controller is implemented by a Gauge IC, an Embedded Controller (EC), or a combination of the two.

In some embodiments, in response to the extension of the first delay time and the second delay time, the controller starts counting a predetermined time.

In some embodiments, after the predetermined time expires, the controller restores the first delay time and the second delay time to a state that has not been extended.

In some embodiments, the first critical ratio is 70%.

In some embodiments, the second critical ratio is 30%.

In some embodiments, the first multiple is two.

In some embodiments, the second multiple is three.

In some embodiments, the third multiple is four.

In another preferred embodiment, the present invention proposes a control method for avoiding unexpected shutdown, comprising the following steps: providing a battery cell, a controller, and an interface element; through the controller, defining a first delay time and A second delay time, wherein the first delay time is related to the over-discharge current protection of the battery cell, and the second delay time is related to the over-voltage protection of the battery cell; and when a plug of a power supply is connected by the When the interface element is pulled out, the controller detects a state of health of the battery cell; if the state of health is better than a first critical ratio, the controller prolongs the first delay according to a first multiplier time and the second delay time; if the state of health is between the first critical ratio and a second critical ratio, the controller extends the first delay time and the second delay time according to a second multiple delay time; and extending the first delay time and the second delay time by the controller according to a third multiplier if the health status is worse than the second critical ratio.

Description of drawings

FIG. 1 is a schematic diagram showing a mobile device and a power supply according to an embodiment of the invention.

FIG. 2 is a schematic diagram showing over-discharge current protection of a battery cell according to an embodiment of the present invention.

FIG. 3 is a schematic diagram showing the overvoltage protection of a battery cell according to an embodiment of the present invention.

FIG. 4 is a schematic diagram showing a mobile device coupled to a power supply according to an embodiment of the present invention.

FIG. 5 is a schematic diagram showing that the mobile device is no longer coupled to the power supply according to an embodiment of the invention.

FIG. 6 is a flowchart showing a control method for avoiding unexpected shutdown according to an embodiment of the invention.

Wherein, the reference signs are explained as follows:

100: mobile device

110: battery cell

120: controller

130: interface components

140: detection pin

180: Power supply

190: plug

BV: state of health

IOUT: output current

ITH: current threshold

K1: first multiple

K2: second multiple

K3: third multiple

S610, S620, S630, S640, S650, S660, S670, S680: Steps

T1: first delay time

T2: second delay time

TA, TB: Time

TH1: First Threshold Ratio

TH2: First Threshold Ratio

VH: High logic potential

VL: low logic potential

VOUT: output voltage

VTH: voltage threshold

Detailed ways

In order to make the purpose, features and advantages of the present invention more comprehensible, specific embodiments of the present invention are listed below, together with the attached drawings, for detailed description as follows.

Certain terms are used in the description and claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. The words "comprising" and "comprising" mentioned throughout the specification and claims are open-ended terms, so they should be interpreted as "including but not limited to". The term "approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and achieve the basic technical effect. In addition, the term "coupled" in this specification includes any direct and indirect electrical connection means. Therefore, if it is described that a first device is coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means. Two devices.

The following disclosure provides many different embodiments or examples for implementing different features of the present invention. The following disclosure describes specific examples of various components and their arrangements to simplify the description. Of course, these specific examples are not intended to be limiting. For example, if the disclosure describes that a first feature is formed on or over a second feature, it means that it may include an embodiment in which the above-mentioned first feature is in direct contact with the above-mentioned second feature, and may also include additional features. Embodiments in which a feature is formed between the first feature and the second feature such that the first feature and the second feature may not be in direct contact. In addition, the same reference signs and/or symbols may be reused in different examples in the following publications. These repetitions are for simplicity and clarity and are not intended to limit a particular relationship between the different embodiments and/or structures discussed.

Also, its terminology related to space. Words such as "below", "beneath", "lower", "above", "higher" and similar terms are used for convenience in describing the difference between one element or feature and another element(s) in the drawings. or the relationship between features. These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be turned in different orientations (rotated 90 degrees or otherwise), and spatially relative terms used herein may be interpreted accordingly.

FIG. 1 is a schematic diagram showing a mobile device (Mobile Device) 100 and a power supply device (Power Supply Device) 180 according to an embodiment of the present invention. For example, the mobile device 100 may be a Smart Phone, a Tablet Computer, or a Notebook Computer. As shown in FIG. 1 , the mobile device 100 includes a battery cell (Battery Cell) 110, a controller (Controller) 120, and an interface element (Jack Element) 130, wherein the interface element 130 includes a detection pin (Detection Pin) 140. On the other hand, the power supply 180 has a plug (Plug) 190 , but it is not a part of the mobile device 100 . It must be understood that although not shown in FIG. 1, the mobile device 100 may further include other components, such as: a processor (Processor), a speaker (Speaker), a touch panel (Touch Control Panel), or ( and) a housing (Housing).

The battery core 110 can provide power to the mobile device 100 . For example, during a discharge process (Discharge Process), the battery cell 110 can generate an output voltage VOUT and an output current IOUT, so that any electronic component (not shown) in the mobile device 100 can be powered by the output voltage VOUT and the output current IOUT power supply.

The controller 120 continuously monitors the output and operating status of the battery cell 110 . In some embodiments, the controller 120 is implemented by a gauge IC (Gauge IC), an embedded controller (Embedded Controller, EC), or a combination of the two. The controller 120 can define a first delay time (Delay Time) T1 and a second delay time T2, wherein the first delay time T1 can be related to the over discharge current protection (Over Discharge Current Protection, ODCP) of the battery cell 110, and the second delay time The second delay time T2 can be related to the over voltage protection (Over Voltage Protection, OVP) of the battery cell 110 .

FIG. 2 is a schematic diagram showing the over-discharge current protection of the battery cell 110 according to an embodiment of the present invention. During the discharge process of the battery cell 110 , the output current IOUT of the battery cell 110 may be greater than or equal to a current threshold ITH for a period of time TA. If the controller 120 detects that this period of time TA is longer than the first delay time T1, it will trigger the mechanism of over-discharge current protection, so that the controller 120 immediately stops any output of the battery cell 110 (that is, the output voltage VOUT and output The current IOUT drops rapidly to 0).

FIG. 3 is a schematic diagram showing the overvoltage protection of the battery cell 110 according to an embodiment of the present invention. During the discharge procedure of the battery cell 110 , the output voltage VOUT of the battery cell 110 may be lower than or equal to a voltage threshold VTH for a period of time TB. If the controller 120 detects that this period of time TB is longer than the second delay time T2, it will trigger the mechanism of overvoltage protection, so that the controller 120 immediately stops any output of the battery cell 110 (that is, the output voltage VOUT and the output current IOUT drops rapidly to 0).

According to the embodiments shown in FIG. 2 and FIG. 3 , both the mechanisms of over-discharge current protection and over-voltage protection can be used to reduce the probability of damage to the battery core 110 . By changing the first delay time T1 and the second delay time T2, the controller 120 can also adjust the trigger threshold of each of the over-discharge current protection and the over-voltage protection according to different needs.

The mobile device 100 can be selectively coupled to a power supply 180 . When the mobile device 100 is coupled to the power supply 180, the power supply 180 can provide stable power from an AC power source (not shown) to the mobile device 100, and the battery core 110 can also enter a charging process (Charge Process).

FIG. 4 is a schematic diagram showing when the mobile device 100 is coupled to the power supply 180 according to an embodiment of the present invention. In the embodiment of FIG. 4 , the plug 190 of the power supply 180 has been inserted into the interface element 130 of the mobile device 100 . At this time, the plug 190 of the power supply 180 can contact the detection pin 140 of the interface component 130 , so that the detection pin 140 can generate a low logic voltage VL.

FIG. 5 is a schematic diagram showing when the mobile device 100 is no longer coupled to the power supply 180 according to an embodiment of the present invention. In the embodiment of FIG. 5 , the plug 190 of the power supply 180 has been pulled out from the interface element 130 of the mobile device 100 . At this time, the plug 190 of the power supply 180 is no longer in contact with the detection pin 140 of the interface component 130 , so that the detection pin 140 can generate a high logic voltage VH.

The controller 120 can be coupled between the battery cell 110 and the interface element 130 . By analyzing the potential at the detection pin 140 , the controller 120 can easily confirm whether the plug 190 of the power supply 180 is inserted into the interface element 130 of the mobile device 100 . For example, if the potential at the detection pin 140 changes from a low logic potential VL to a high logic potential VH, the controller 120 can determine that the plug 190 of the power supply 180 may have just been pulled out from the interface element 130 of the mobile device 100 .

When the plug 190 of the power supply 180 is pulled out from the interface element 130 of the mobile device 100 , the controller 120 then detects a state of health (SOH) BV of the battery cell 110 . In some embodiments, the state of health BV of the battery cell 110 can be defined according to the following equation (1):

Where “BV” represents the health status of the battery cell 110 , “FCC” represents the fully charged capacity of the battery cell 110 , and “DC” represents the design capacity of the battery cell 110 .

It must be understood that since the fully charged capacity of the battery cell 110 is less than or equal to the design capacity of the battery cell 110, the state of health BV of the battery cell 110 will be between 0 and 1 (or between 0% and 100% %between). Next, the controller 120 can compare the health state BV of the battery cell 110 with a first threshold ratio TH1 and a second threshold ratio TH2, and then perform corresponding operations. For example, the first critical ratio TH1 may be larger than 50%, and the second critical ratio TH2 may be smaller than 50%, but it is not limited thereto. In some other embodiments, the controller 120 can also compare the health status BV of the battery cell 110 with more critical ratios to perform more different operations.

If the health state BV of the battery cell 110 is better than the first critical ratio (for example, BV≥TH1), the controller 120 can extend the first delay time T1 and the second delay time T2 according to a first multiple K1, as follows Equations (2), (3) described:

T1D=T1·K1 (2)

T2D=T2·K1 (3)

Among them, "T1D" represents the extended first delay time T1, "T2D" represents the extended second delay time T2, "T1" represents the original first delay time T1, and [T2" represents the original second delay time T2 , and [K1" represents the first multiple K1.

If the state of health BV of the battery cell 110 is between the first critical ratio TH1 and the second critical ratio TH2 (for example, TH1>BV≥TH2), the controller 120 can extend the first delay according to a second multiple K2 Time T1 and the second delay time T2, as described in the following equations (4), (5):

T1D＝T1·K2 (4)

T2D＝T2·K2 (5)

Among them, "T1D" represents the extended first delay time T1, "T2D" represents the extended second delay time T2, "T1" represents the original first delay time T1, and [T2" represents the original second delay time T2 , and [K2" represents the second multiple K2.

If the state of health BV of the battery cell 110 is worse than the second critical ratio (for example, BV<TH2), the controller 120 can extend the first delay time T1 and the second delay time T2 according to a third multiple K3, as follows Equations (6), (7) described:

T1D＝T1·K3 (6)

T2D＝T2·K3 (7)

Among them, "T1D" represents the extended first delay time T1, "T2D" represents the extended second delay time T2, "T1" represents the original first delay time T1, and "T2" represents the original second delay time T2 , and "K3" represents the third multiple K3.

In short, if the health state BV of the battery cell 110 gradually declines, the controller 120 can correspondingly prolong the first delay time T1 of the over-discharge current protection and the second delay time T2 of the over-voltage protection. During the discharge process, since the thresholds of the over-discharge current protection and the over-voltage protection can be dynamically adjusted, the probability of unexpected shutdown of the mobile device 100 due to the sudden stop of the output of the battery cell 110 can be effectively reduced. Under the design of the present invention, the operation stability of the mobile device 100 will be greatly improved.

In some embodiments, the component parameters of the mobile device 100 may be as follows. The current threshold ITH may be about 5A. The voltage threshold VTH may be about 2.8V. The first critical ratio TH1 may be about 70%. The second critical ratio TH2 may be about 30%. The first multiple K1, the second multiple K2, and the third multiple K3 can all be greater than or equal to 2, wherein the third multiple K3 can be greater than the second multiple K2, and the second multiple K2 can be greater than the first multiple K1. For example, the first multiple K1 can be 2, the second multiple K2 can be 3, and the third multiple K3 can be 4. The ranges of the above component parameters are obtained according to the results of multiple experiments, which help to optimize the operation stability of the mobile device 100 .

For example, the first delay time T1 and the second delay time T2 can be set according to the following table 1, but are not limited thereto:

Table 1: Example of adjusting the first delay time and the second delay time

In other embodiments, in response to the extension of the first delay time T1 and the second delay time T2 , the controller 120 can start counting a predetermined time (for example, 20 seconds). For example, when the plug 190 of the power supply 180 is pulled out from the interface element 130 of the mobile device 100 (or when the potential at the detection pin 140 changes from a low logic potential VL to a high logic potential VH), the controller 120 can start counting the aforementioned predetermined time, but it is not limited thereto. Then, after the aforementioned predetermined time expires, the controller 120 can also restore the first delay time T1 and the second delay time T2 to the state that has not been extended. In other words, the first delay time T1 and the second delay time T2 are only temporarily extended, and this design can further protect the battery cell 110 from damage.

FIG. 6 is a flowchart showing a control method for avoiding unexpected shutdown according to an embodiment of the invention. The aforementioned control method includes the following steps. In step S610, a battery cell, a controller, and an interface component are provided. In step S620, a first delay time and a second delay time are defined by the controller, wherein the first delay time is related to the over-discharge current protection of the battery cell, and the second delay time is related to the over-voltage protection of the battery cell. In step S630, the controller determines whether a plug of a power supply is pulled out from the interface element. If yes, then in step S640, the controller detects a state of health of the battery cell. In step S650, the state of health of the battery cell is compared with a first critical ratio and a second critical ratio. If the health state is better than the first critical ratio, then in step S660, the controller extends the first delay time and the second delay time according to a first multiplier. If the health state is between the first critical ratio and the second critical ratio, then in step S670, the controller extends the first delay time and the second delay time according to a second multiple. If the health state is worse than the second critical ratio, then in step S680, the controller extends the first delay time and the second delay time according to a third multiplier. It must be understood that the above steps do not need to be performed in sequence, and each feature of the embodiment shown in FIGS. 1-5 can be applied to the control method shown in FIG. 6 .

The present invention proposes a novel mobile device. Compared with the traditional technology, the present invention at least has the advantages of reducing the probability of accidental shutdown and increasing the stability of operation, so it is very suitable for application in various mobile communication devices.

It should be noted that none of the above-mentioned component parameters are limiting conditions of the present invention. Designers can adjust these settings according to different needs. The mobile device and control method of the present invention are not limited to the states shown in FIGS. 1-6 . The present invention may only include any one or more features of any one or more of the embodiments of FIGS. 1-6 . In other words, not all the illustrated features must be implemented in the mobile device and the control method of the present invention at the same time.

The method of the present invention, or specific forms or parts thereof, may exist in the form of program codes. The program code may be contained in a physical medium, such as a floppy disk, a CD-ROM, a hard disk, or any other machine-readable (such as a computer-readable) storage medium, or a computer program product in an external form, where, when the program When the code is loaded and executed by a machine, such as a computer, the machine becomes a device for participating in the present invention. The program code may also be transmitted through some transmission medium, such as wire or cable, optical fiber, or any transmission type in which when the program code is received, loaded and executed by a machine, such as a computer, the machine becomes used to participate in the Device of the present invention. When implemented on a general-purpose processing unit, the program code combines with the processing unit to provide a unique device that operates similarly to application-specific logic circuits.

Ordinal numbers in this specification and claims, such as "first", "second", "third", etc., have no sequential relationship with each other, and are only used to mark and distinguish two terms with the same name. of different components.

Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the scope of the present invention. Anyone skilled in this art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore The scope of protection of the present invention should be defined by the appended claims.

Claims (10)

1. A mobile device for avoiding unexpected shutdown is selectively coupled to a power supply and comprises:

a battery cell;

a controller defining a first delay time and a second delay time, wherein the first delay time is related to over-discharge current protection of the battery cell, and the second delay time is related to over-voltage protection of the battery cell; and

an interface component, including a detection pin, wherein when a plug of the power supply is pulled out from the interface component, the detection pin informs the controller, so that the controller detects a health status of the battery core;

wherein if the health status is better than a first threshold ratio, the controller will extend the first delay time and the second delay time according to a first multiple;

wherein if the health status is between the first threshold ratio and a second threshold ratio, the controller extends the first delay time and the second delay time according to a second multiple;

wherein if the health status is worse than the second threshold ratio, the controller will extend the first delay time and the second delay time according to a third multiple.

2. The mobile device of claim 1, wherein the controller is implemented as a fuel gauge chip, an embedded controller, or a combination thereof.

3. The mobile device as claimed in claim 1, wherein the controller starts timing a predetermined time in response to the first delay time and the second delay time being extended.

4. The mobile device as claimed in claim 3, wherein the controller returns the first delay time and the second delay time to a state of not being extended after the predetermined time expires.

5. The mobile device of claim 1, wherein the first threshold ratio is 70%.

6. The mobile device of claim 1, wherein the second threshold ratio is 30%.

7. The mobile device of claim 1, wherein the first multiple is 2.

8. The mobile device of claim 1, wherein the second multiple is 3.

9. The mobile device of claim 1, wherein the third multiple is 4.

10. A control method for avoiding an unexpected shutdown, comprising the steps of:

providing a battery core, a controller and an interface element;

defining a first delay time and a second delay time by the controller, wherein the first delay time is related to over-discharge current protection of the battery cell, and the second delay time is related to over-voltage protection of the battery cell; and

when a plug of a power supply is pulled out of the interface element, detecting a health state of the battery cell through the controller;

if the health status is better than a first threshold ratio, the controller extends the first delay time and the second delay time according to a first multiple;

if the health status is between the first threshold ratio and a second threshold ratio, extending the first delay time and the second delay time according to a second multiple by the controller; and

if the health status is worse than the second threshold ratio, the first delay time and the second delay time are extended by a third multiple through the controller.

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