CN113972722A - Mobile terminal - Google Patents
Mobile terminal Download PDFInfo
- Publication number
- CN113972722A CN113972722A CN202111283803.9A CN202111283803A CN113972722A CN 113972722 A CN113972722 A CN 113972722A CN 202111283803 A CN202111283803 A CN 202111283803A CN 113972722 A CN113972722 A CN 113972722A
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- Prior art keywords
- charging
- terminal
- mobile terminal
- positive
- control circuit
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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
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
- H02J7/007186—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage obtained with the battery disconnected from the charge or discharge circuit
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention provides a mobile terminal which comprises a positive charging end, a negative charging end, a charging load and a control circuit, wherein the positive charging end is connected with the control circuit and the positive electrode of the charging load, the negative charging end is connected with the control circuit, and the control circuit is connected with the negative electrode of the charging load. And the control circuit is used for controlling the on-off of a path between the negative charging terminal and the negative electrode of the charging load based on the voltage of the positive charging terminal. By adding the control circuit, the on-off of the path between the negative charging end and the negative electrode of the charging load is controlled based on the voltage of the positive charging end, so that the safety of the mobile terminal during charging can be improved.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a mobile terminal.
Background
During the charging process of the charging device, the charging device and the device to be charged need to perform interaction of information necessary for safe charging. For some mobile terminals with circuit contacts, the mobile terminals can be connected with external charging equipment for charging, part of interface circuits (such as magnetic interfaces) of the mobile terminals are in a contact elastic connection mode, if the mobile terminals are accidentally vibrated, extruded and dropped or are subjected to a certain degree of sideslip during plugging operation under normal conditions during charging, signals of adjacent contacts are in butt joint and misplaced at a certain moment to cause mistaken contact, and accidental electrical damage to the equipment can be possibly caused.
In present contact bullet meets the product, for taking into account product overall dimension, consider the convenience of its use, some products can't be effectual spacing to the structure of connecting usually, have the possibility of dislocation connection during normal use, simultaneously along with reasons such as wearing and tearing of daily use, aggravate the dislocation connection that spacing became invalid and lead to, can't play effectual protection to equipment.
Therefore, how to improve the charging security of the mobile terminal is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The embodiment of the application provides a mobile terminal, which is used for solving the problem that in the prior art, the mobile terminal is unsafe when being connected with a charging device for charging.
An embodiment of the present invention provides a mobile terminal, including: a positive charging terminal, a negative charging terminal, a charging load, and a control circuit, wherein,
the positive charging end is connected with the control circuit and the positive pole of the charging load;
the negative charging end is connected with the control circuit;
the control circuit is connected with the negative electrode of the charging load;
the control circuit is used for controlling the on-off of a path between the negative charging terminal and the negative electrode of the charging load based on the voltage of the positive charging terminal.
In one possible implementation manner, the voltage of the positive charging terminal is 0;
the control circuit is specifically configured to control a disconnection of a path between the negative charging terminal and a negative electrode of the charging load.
In one possible implementation manner, the voltage of the positive charging terminal is within a preset voltage range;
the control circuit is specifically configured to control a conduction of a path between the negative charging terminal and a negative electrode of the charging load.
In a possible implementation manner, the charging device further includes a data transmission terminal connected to the signal terminal of the charging device, and configured to perform data transmission through the signal terminal.
In one possible implementation, the control circuit includes a control unit and a switching unit;
a first end of the control unit is connected with the positive charging end and the positive electrode of the charging load, and a second end of the control unit is connected with the control end of the switch unit and used for providing a switch signal to the control end of the switch unit based on the voltage of the positive charging end;
and the first end of the switch unit is connected with the negative charging end, and the second end of the switch unit is connected with the negative electrode of the charging load and used for controlling the on-off of a passage between the negative charging end and the negative electrode of the charging load according to the switch signal.
In one possible implementation, the control unit includes: a first resistor;
the first end of the first resistor is connected with the positive charging end and the positive pole of the charging load, and the second end of the first resistor is connected with the control end of the switch unit.
In one possible implementation, the control unit further includes a second resistor;
the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is connected with the second end of the switch unit.
In one possible implementation, the switching unit includes a transistor;
the control stage of the transistor is used as the control end of the switch unit, the first stage of the transistor is used as the first end of the switch unit, and the second stage of the transistor is used as the second end of the switch unit.
In one possible implementation, the control circuit further includes a capacitor;
the first end of the capacitor is connected with the positive charging end, and the second end of the capacitor is connected with the control end of the switch unit.
In one possible implementation, the control circuit further includes: a third resistor;
the first end of the third resistor is connected with the first end of the switch unit, and the second end of the third resistor is connected with the second end of the switch unit.
The mobile terminal provided by the embodiment of the invention comprises a positive charging end, a negative charging end, a charging load and a control circuit, wherein the positive charging end is connected with the control circuit and the positive electrode of the charging load, the negative charging end is connected with the control circuit, and the control circuit is connected with the negative electrode of the charging load. And the control circuit is used for controlling the on-off of a path between the negative charging terminal and the negative electrode of the charging load based on the voltage of the positive charging terminal. By adding the control circuit, the on-off of the path between the negative charging end and the negative electrode of the charging load is controlled based on the voltage of the positive charging end, so that the safety of the mobile terminal during charging can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating normal charging of a mobile terminal according to the related art according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an abnormal charging of a mobile terminal according to the related art according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a mobile terminal according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating normal charging of a mobile terminal according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an abnormal charging of a mobile terminal according to an embodiment of the present invention;
fig. 6 is a schematic diagram of another mobile terminal according to an embodiment of the present invention;
fig. 7 is a schematic diagram of another mobile terminal according to an embodiment of the present invention;
fig. 8 is a schematic diagram of another mobile terminal according to an embodiment of the present invention;
fig. 9 is a schematic diagram of another mobile terminal according to an embodiment of the present invention;
fig. 10 is a schematic diagram of another mobile terminal according to an embodiment of the present invention;
fig. 11 is a schematic diagram of another mobile terminal according to an embodiment of the present invention;
fig. 12 is a schematic diagram of another mobile terminal according to an embodiment of the present invention;
fig. 13 is a schematic diagram of another mobile terminal according to an embodiment of the present invention;
fig. 14 is a schematic diagram of another mobile terminal according to an embodiment of the present invention;
fig. 15 is a schematic diagram of another mobile terminal according to an embodiment of the present invention.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.
Most mobile terminals are provided with charging loads, such as batteries, wherein some interface circuits for charging the mobile terminals are in a contact elastic connection mode (such as magnetic attraction interfaces), the interface circuits are not safe during charging, and when the interface circuits are accidentally vibrated, squeezed, dropped or plugged and pulled out, signals of adjacent contacts are in butt joint and misplaced at a certain moment to cause mistaken contact, and accidental electrical damage can be caused to equipment.
The current main mode is structurally to increase spacing dislocation connection on avoiding the interface, but this kind of mode accessory is bulky, and can't do further protection to equipment when spacing inefficacy, and along with reasons such as daily use wearing and tearing, the spacing inefficacy of aggravation leads to the dislocation connection simultaneously. In some contact spring joint products, for taking into account product appearance size, consider the convenience of its use, some products can't be effectual spacing to the structure of connecting usually, have the possibility of dislocation connection during normal use, can't play effectual protection to equipment.
As shown in fig. 1, the mobile terminal includes a positive charging terminal, a negative charging terminal and a data transmission terminal, the charging device includes a positive output terminal and a negative output terminal of electric energy, and a signal terminal, when the mobile terminal is charging, under normal conditions, the positive charging terminal of the mobile terminal is connected with the positive output terminal of the charging device, the negative charging terminal of the mobile terminal is connected with the negative output terminal of the charging device to form a charging loop, the data transmission terminal of the mobile terminal is connected with the signal terminal of the charging device for data transmission, so that corresponding connection of corresponding ports can ensure normal charging of the mobile terminal, wherein the data transmission can be performed by connecting the data terminal of the mobile terminal with the signal transmission terminal of the charging device, and corresponding signal transmission and reception can be performed, specifically, when the charging device is connected to a computer, and the data transmission end of the mobile terminal performs data transmission with the computer through the signal end of the charging equipment.
In the embodiment of the invention, the mobile terminal and the charging equipment are non-common ground systems.
When a user accidentally inserts the mobile terminal into the port of the charging device by mistake to cause dislocation, or the mobile terminal is accidentally vibrated, squeezed, dropped or plugged and pulled out under normal conditions, the adjacent contact signals are in butt joint and dislocated at a certain moment to cause miscontact, and accidental electrical damage can be caused to the device.
As shown in fig. 2, which is a schematic diagram of a mobile terminal and a charging device being connected in a staggered manner, it can be seen from fig. 2 that a positive charging terminal of the mobile terminal is suspended, a negative charging terminal of the mobile terminal is connected with a positive output terminal of the charging device, and a data transmission terminal of the mobile terminal is connected with a negative output terminal of the charging device, and since the charging device and the mobile terminal device are both in a non-common-ground system, a voltage of the data transmission terminal of the mobile terminal is about a reverse voltage of the positive output terminal of the charging device. The pressure of the chip system is generally-0.3V, and the voltage at the positive output end of the charging device must exceed 0.3V (generally more than 5V), so that the voltage at the data transmission end of the mobile terminal is about-5V or even lower, and far exceeds the limit (0.3V) that the chip can bear, and the chip connected with the data transmission end of the mobile terminal is easily damaged.
In view of the above problem, an embodiment of the present invention provides a mobile terminal 10, as shown in fig. 3, including: a positive charging terminal, a negative charging terminal, a control circuit 101, and a charging load 102, wherein,
the positive charging end is connected with the positive electrodes of the control circuit 101 and the charging load 102;
the negative charging terminal is connected with the control circuit 101;
the control circuit 101 is connected with the negative electrode of the charging load 102;
and a control circuit 101 for controlling the on/off of a path between the negative charging terminal and the negative electrode of the charging load based on the voltage of the positive charging terminal.
The mobile terminal provided by the embodiment of the invention comprises a positive charging end, a negative charging end, a charging load and a control circuit, wherein the positive charging end is connected with the control circuit and the positive electrode of the charging load, the negative charging end is connected with the control circuit, and the control circuit is connected with the negative electrode of the charging load. And the control circuit is used for controlling the on-off of a path between the negative charging terminal and the negative electrode of the charging load based on the voltage of the positive charging terminal. By adding the control circuit, the on-off of the path between the negative charging end and the negative electrode of the charging load is controlled based on the voltage of the positive charging end, so that the safety of the mobile terminal during charging can be improved.
The embodiment of the invention uses the hardware circuit to protect the mobile terminal, and has simple and reliable circuit and strong practicability.
Specifically, when the mobile terminal 10 provided in the embodiment of the present invention is normally connected to the charging device, as shown in fig. 4, the positive charging terminal, the negative charging terminal, and the data transmission terminal of the mobile terminal are respectively connected to the positive output terminal, the negative output terminal, and the signal terminal of the charging device in a one-to-one correspondence manner. At this time, the charging device provides electric energy to the positive charging terminal of the mobile terminal through the positive output terminal, that is, the voltage of the positive charging terminal of the mobile terminal is within a preset voltage range, that is, a preset normal working voltage, the control circuit 101 is specifically configured to control the conduction of the path between the negative charging terminal and the negative electrode of the charging load, and the mobile terminal 10 is normally charged.
In an implementation, the charging device may include or not include a signal terminal, and if the charging device includes the signal terminal, the data transmission terminal of the mobile terminal 10 may be connected to the signal terminal of the charging device, and when the charging device charges the mobile terminal, data transmission may be performed through the signal terminal of the charging device.
In the above embodiment, the main application scenario is that when the charging device is connected to the computer, the mobile terminal 10 performs data transmission, actually, data transmission is performed with the computer through the signal terminal of the charging device, and the signal terminal of the charging device plays a role in relaying.
In some embodiments, if the mobile terminal 10 provided in the embodiments of the present invention is misaligned when being connected to a charging device for charging, as shown in fig. 5, a positive charging terminal of the mobile terminal 10 is floating, that is, the voltage is 0, and at this time, the control circuit 101 is specifically configured to control the path between the negative charging terminal and the negative electrode of the charging load 102 to be disconnected. As can be seen from fig. 5, when a misalignment occurs, the positive charging terminal of the mobile terminal 10 is not connected to any terminal of the charging device, and the pin of the positive charging terminal of the mobile terminal 10 is in a floating state, and there is no voltage, that is, the voltage is 0, at this time, if the path between the negative charging terminal of the mobile terminal 10 and the negative electrode of the charging load 102 is conducted, the mobile terminal 10 may be damaged, so the control circuit 101 controls the path between the negative charging terminal and the negative electrode of the charging load 102 to be disconnected according to the state that the voltage of the positive charging terminal is 0, so that the charging loop is disconnected, the mobile terminal 10 stops charging, and at this time, the data transmission terminal of the mobile terminal 10 does not form an effective negative voltage, thereby protecting the devices on the data transmission terminal of the mobile terminal 10 from being damaged, and improving the charging safety.
It should be noted that, in the embodiment of the present invention, one end of the mobile terminal connected to the negative output end of the charging device may be a data transmission end of the mobile terminal, and may also be another end of the mobile terminal, as long as the end connected to the negative output end of the charging device is an end of the mobile terminal that may be damaged due to the voltage of the negative output end, which is not limited in the embodiment of the present invention.
In some embodiments, the control circuit 101 may include a control unit 1011 and a switch unit 1012, as shown in fig. 6.
A first terminal of the control unit 1011 is connected to the positive charging terminal and the positive electrode of the charging load 102, and a second terminal of the control unit 1011 is connected to the control terminal of the switching unit 1012, and is configured to provide a switching signal to the control terminal of the switching unit 1012 based on the voltage of the positive charging terminal, wherein when the voltage of the positive charging terminal is 0, a turn-off signal is provided to the control terminal of the switching unit 1012, and when the voltage of the positive charging terminal is within a preset voltage range, a turn-on signal is provided to the control terminal of the switching unit 1012.
A first end of the switch unit 1012 is connected to the negative charging end, a second end of the switch unit 1012 is connected to the negative electrode of the charging load 102, and the switch unit is used for controlling the on-off of the path between the negative charging end and the negative electrode of the charging load according to the switch signal, and when the switch signal is the closing signal, the path between the charging end and the negative electrode of the charging load is closed; when the switch signal is a conducting signal, a path between the charging terminal and the negative electrode of the charging load is conducted.
In some alternative embodiments, the control unit 1011 may include: first resistor R1, as shown in fig. 7.
A first terminal of the first resistor R1 is connected to the positive charging terminal and the positive terminal of the charging load 102, and a second terminal of the first resistor R1 is connected to the control terminal of the switching unit 1012.
In some alternative embodiments, the control unit 1011 further comprises a second resistor R2, as shown in fig. 8.
A first terminal of the second resistor R2 is connected to a second terminal of the first resistor R1, and a second terminal of the second resistor R2 is connected to a second terminal of the switch unit 1012.
An appropriate turn-on voltage can be selected by adjusting the values of R1 and R2, so that the turn-off time of the switch unit 1012 can be shortened, and the operating efficiency of the circuit can be improved.
In some alternative embodiments, the switching unit 1012 may include a transistor Q, as shown in fig. 9.
A control stage of the transistor Q serves as a control terminal of the switching unit 1012, a first stage of the transistor Q serves as a first terminal of the switching unit 1012, and a second stage of the transistor Q serves as a second terminal of the switching unit 1012.
In some alternative embodiments, the control circuit 101 further comprises a capacitor C, as shown in fig. 10-12;
a first terminal of the capacitor C is connected to the positive charging terminal, and a second terminal of the capacitor C is connected to the control terminal of the switching unit 1012.
By adding the capacitor C, the discharging speed of the transistor Q in the switching unit 1012 can be increased, and the operating efficiency of the control circuit 101 can be improved.
In some optional embodiments, the control circuit 101 may further include: and a third resistor R3, as shown in fig. 13 to 15.
A first terminal of the third resistor R3 is connected to a first terminal of the switch unit 1012, and a second terminal of the third resistor R3 is connected to a second terminal of the switch unit 1012.
The added resistor R3 can meet The triggering requirements of other devices, such as The ID (Identity Document) identification requirement of otg (on The go).
The mobile terminal provided by the embodiment of the invention comprises a positive charging end, a negative charging end, a charging load and a control circuit, wherein the positive charging end is connected with the control circuit and the positive electrode of the charging load, the negative charging end is connected with the control circuit, and the control circuit is connected with the negative electrode of the charging load. And the control circuit is used for controlling the on-off of a path between the negative charging terminal and the negative electrode of the charging load based on the voltage of the positive charging terminal. Through increasing control circuit, based on the voltage of positive charge end, the break-make of the route between the negative pole of control burden charge end and the load that charges has made full use of mobile terminal sideslip dislocation's inefficacy principle, realizes the protection from hardware circuit purely, and this mobile terminal's circuit is simple reliable, the practicality is strong, security when can improve mobile terminal and charge.
Various modifications and alterations of this application may be made by those skilled in the art without departing from the spirit and scope of this application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A mobile terminal, comprising: a positive charging terminal, a negative charging terminal, a charging load, and a control circuit, wherein,
the positive charging end is connected with the control circuit and the positive pole of the charging load;
the negative charging end is connected with the control circuit;
the control circuit is connected with the negative electrode of the charging load;
the control circuit is used for controlling the on-off of a path between the negative charging terminal and the negative electrode of the charging load based on the voltage of the positive charging terminal.
2. The mobile terminal of claim 1, wherein the voltage of the positive charging terminal is 0;
the control circuit is specifically configured to control a disconnection of a path between the negative charging terminal and a negative electrode of the charging load.
3. The mobile terminal of claim 1, wherein the voltage of the positive charging terminal is within a preset voltage range;
the control circuit is specifically configured to control a conduction of a path between the negative charging terminal and a negative electrode of the charging load.
4. The mobile terminal of claim 3, further comprising a data transmission terminal connected to the signal terminal of the charging device for data transmission through the signal terminal.
5. The mobile terminal of claim 1, wherein the control circuit comprises a control unit and a switch unit;
a first end of the control unit is connected with the positive charging end and the positive electrode of the charging load, and a second end of the control unit is connected with the control end of the switch unit and used for providing a switch signal to the control end of the switch unit based on the voltage of the positive charging end;
and the first end of the switch unit is connected with the negative charging end, and the second end of the switch unit is connected with the negative electrode of the charging load and used for controlling the on-off of a passage between the negative charging end and the negative electrode of the charging load according to the switch signal.
6. The mobile terminal of claim 5, wherein the control unit comprises: a first resistor;
the first end of the first resistor is connected with the positive charging end and the positive pole of the charging load, and the second end of the first resistor is connected with the control end of the switch unit.
7. The mobile terminal of claim 6, wherein the control unit further comprises a second resistor;
the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is connected with the second end of the switch unit.
8. The mobile terminal of claim 5, wherein the switching unit includes a transistor;
the control stage of the transistor is used as the control end of the switch unit, the first stage of the transistor is used as the first end of the switch unit, and the second stage of the transistor is used as the second end of the switch unit.
9. The mobile terminal of any of claims 6-8, wherein the control circuit further comprises a capacitor;
the first end of the capacitor is connected with the positive charging end, and the second end of the capacitor is connected with the control end of the switch unit.
10. The mobile terminal of claim 9, wherein the control circuit further comprises: a third resistor;
the first end of the third resistor is connected with the first end of the switch unit, and the second end of the third resistor is connected with the second end of the switch unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111283803.9A CN113972722B (en) | 2021-11-01 | 2021-11-01 | A mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111283803.9A CN113972722B (en) | 2021-11-01 | 2021-11-01 | A mobile terminal |
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| CN113972722A true CN113972722A (en) | 2022-01-25 |
| CN113972722B CN113972722B (en) | 2025-04-29 |
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| CN110912224A (en) * | 2019-11-13 | 2020-03-24 | 宁波公牛数码科技有限公司 | Charging device and charging device control method |
| JP2021040397A (en) * | 2019-09-02 | 2021-03-11 | キヤノン株式会社 | Battery pack and electronic apparatus |
| CN214543716U (en) * | 2021-04-08 | 2021-10-29 | 宁波麦度智联科技股份有限公司 | Charging and discharging protection circuit of mobile terminal |
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| CN204761085U (en) * | 2015-06-19 | 2015-11-11 | 常州华达科捷光电仪器有限公司 | Control circuit and have this control circuit's that charges laser instrument charges |
| CN105262160A (en) * | 2015-09-29 | 2016-01-20 | 安徽华米信息科技有限公司 | Anti-reverse-connection circuit, anti-reverse-connection processing method, device and intelligent wearable equipment |
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| CN207082665U (en) * | 2017-07-24 | 2018-03-09 | 百富计算机技术（深圳）有限公司 | POS machine charging structure |
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| CN113972722B (en) | 2025-04-29 |
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Country or region after: China Address after: Shandong City, Qingdao Province, Jiangxi City Road No. 11 Applicant after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: Shandong City, Qingdao Province, Jiangxi City Road No. 11 Applicant before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. Country or region before: China |
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