An external battery power supply system for an electric device

Abstract

The utility model discloses an external battery power supply system of electric equipment, including electric equipment, the electric equipment includes built -in battery and internal system, its characterized in that: still include external battery and the switch that configures in the electric equipment, the first switch group is arranged between internal system and built -in battery, the second switch group is arranged between internal system and external battery, and the switch control uses built -in battery or external battery and supplies power for electric equipment. The utility model discloses simple structure, in electric equipment, for example, the setting interface of mobile phone adds switch, can through switch and chooses to use built -in battery or external battery and carries out for mobile phone power supply, when using external battery, can through the detection port real -time detection external battery's electric quantity to show on mobile phone interface.

Description

Technical Field

[0001] This utility model belongs to the field of power supply system technology, specifically relating to an external battery power supply system for electrical equipment. Background Technology

[0002] Existing electronic devices, such as mobile phones and tablets, have limited battery capacity. When the built-in battery is low, users experience battery anxiety. Currently, many users rely on power banks to power these devices, requiring them to use the phone while charging. This can damage the built-in battery and cause the device to overheat, affecting its performance. Furthermore, charging with a power bank requires a certain amount of waiting time. Therefore, it is crucial to develop an external battery power supply system for electronic devices that overcomes these drawbacks. Utility Model Content

[0003] To solve at least one of the above-mentioned technical problems, this utility model provides an external battery power supply system for electrical equipment, including electrical equipment, the electrical equipment including a built-in battery and an internal system, and also including an external battery and a switching switch configured on the electrical equipment; A first switch group is configured between the internal system and the built-in battery; A second switch group is configured between the internal system and the external battery; The switching control uses either a built-in battery or an external battery to power the electrical equipment.

[0004] The external battery is connected to the internal system via a voltage divider circuit, which includes a first voltage divider resistor and a second voltage divider resistor. The connection between the first voltage divider resistor and the second voltage divider resistor is electrically connected to the external battery voltage detection port of the internal system.

[0005] The electrical equipment also includes a capacitor bank, which comprises several capacitors connected in parallel. The power supply port of the internal system is electrically connected to the first switch group and the second switch group through the capacitor bank.

[0006] It also includes a switch control module, the input of which is electrically connected to the output control port of the internal system, and the output is electrically connected to the control terminals of the first switch group and the second switch group.

[0007] The first switch group includes a third MOSFET and a fourth MOSFET. The source of the third MOSFET is connected to the positive terminal of the internal battery, and its drain is electrically connected to the drain of the fourth MOSFET. The source of the fourth MOSFET is connected to the internal system. The gates of the third and fourth MOSFETs are electrically connected to the output terminal of the switch control module. The second switch group includes a first MOSFET and a second MOSFET. The source of the second MOSFET is connected to the positive terminal of the external battery, and its drain is electrically connected to the drain of the first MOSFET. The source of the first MOSFET is connected to the internal system. The gates of the first and second MOSFETs are electrically connected to the output terminal of the switch control module.

[0008] The negative terminals of the built-in battery and the external battery are grounded. The voltage divider circuit is grounded.

[0009] The external battery is detachably and electrically connected to the electrical equipment. When an external battery is connected, the switch disconnects the first switch group and controls the second switch group to conduct so that the external battery can supply power to the electrical equipment, allowing the electrical equipment to continue operating normally.

[0010] The external battery is detachably electrically connected to the electrical equipment. When an external battery is connected, the internal system uses an ADC to detect the current voltage value of the external battery. If the voltage value of the external battery is higher than the normal operating voltage of the electrical equipment, the first switch group is disconnected and the second switch group is turned on.

[0011] The aforementioned detachable connection method can be achieved by using precision connectors such as Pogo pins, or spring pins, whereby the spring pins can be electrically connected and fixed to the electrical equipment, and the external battery can be detachably electrically connected to the spring pins.

[0012] The external battery of this invention can be configured to resemble the structure of a power bank.

[0013] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure and adds a switch to the settings interface of the electrical device, such as the mobile phone. The switch can be used to select whether to use the built-in battery or the external battery to power the mobile phone. When using the external battery, the power of the external battery can be detected in real time through the detection port and displayed on the mobile phone interface.

[0014] When put into use, if the switch selects the external battery, this invention detects whether an external battery is electrically connected. If connected, the external battery is used to power the phone, and the phone maintains normal battery life.

[0015] When the built-in battery is used, the third and fourth MOSFETs are turned on, using the built-in battery to power the phone, while the first and second MOSFETs are turned off. When an external battery is connected, this invention uses an ADC with voltage divider resistors to detect the current voltage state of the external battery and then decides whether to use the external battery. When the external battery voltage is higher than the normal operating voltage of the device, the switch control module turns off the third and fourth MOSFETs and turns on the first and second MOSFETs. However, because there is a time gap between the two sets of switches, a capacitor group consisting of multiple capacitors is added to this invention to control the voltage. Attached Figure Description

[0016] Figure 1 This is the system structure circuit diagram of this utility model; Figure label: 1 Electrical equipment; 2 Built-in battery; 3 Internal system; 4 First switch group; Q3 Third MOSFET; Q4 Fourth MOSFET; 5 Second switch group; Q1 First MOSFET; Q2 Second MOSFET; 6 External battery; 7 Capacitor group; 8 Voltage divider circuit; R1 First voltage divider resistor; R2 Second voltage divider resistor; 9 External battery voltage detection port; 10 Power supply port; 11 Output control port; 12 Switch control module. Detailed Implementation

[0017] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0018] Referring to the accompanying drawings, the present invention adopts the following technical solution: an external battery power supply system for electrical equipment, including an electrical equipment 1, wherein the electrical equipment 1 includes a built-in battery 2 and an internal system 3, and also includes an external battery 6 and a switching switch configured on the electrical equipment 1; A first switch group 4 is configured between the internal system 3 and the built-in battery 2; A second switch group 5 is configured between the internal system 3 and the external battery 6; The switching control uses either the built-in battery 2 or the external battery 6 to power the electrical equipment 1.

[0019] The external battery 6 is connected to the internal system 3 through a voltage divider circuit 8. The voltage divider circuit 8 includes a first voltage divider resistor R1 and a second voltage divider resistor R2. The connection between the first voltage divider resistor R1 and the second voltage divider resistor R2 is electrically connected to the external battery voltage detection port 9 of the internal system 3.

[0020] The electrical equipment 1 also includes a capacitor bank 7, which includes several capacitors connected in parallel. The power supply port 10 of the internal system 3 is electrically connected to the first switch group 4 and the second switch group 5 through the capacitor bank 7.

[0021] It also includes a switch control module 12, the input of which is electrically connected to the output control port 11 of the internal system 3, and the output is electrically connected to the control terminals of the first switch group 4 and the second switch group 5.

[0022] The first switch group 4 includes a third MOSFET Q3 and a fourth MOSFET Q4. The source of the third MOSFET Q3 is connected to the positive terminal of the built-in battery 2, and its drain is electrically connected to the drain of the fourth MOSFET Q4. The source of the fourth MOSFET Q4 is connected to the internal system 3. The gates of the third MOSFET Q3 and the fourth MOSFET Q4 are electrically connected to the output terminal of the switch control module 12. The second switch group 5 includes a first MOSFET Q1 and a second MOSFET Q2. The source of the second MOSFET Q2 is connected to the positive terminal of the external battery 6, and its drain is electrically connected to the drain of the first MOSFET Q1. The source of the first MOSFET Q1 is connected to the internal system 3. The gates of the first MOSFET Q1 and the second MOSFET Q2 are electrically connected to the output terminal of the switch control module 12.

[0023] The negative terminals of the built-in battery 2 and the external battery 6 are grounded. The voltage divider circuit 8 is grounded.

[0024] The external battery 6 is detachably electrically connected to the electrical device 1. When the external battery 6 is connected, the switch disconnects the first switch group 4 and controls the second switch group 5 to conduct so that the external battery 6 can supply power to the electrical device 1, allowing the electrical device 1 to continue operating normally.

[0025] The external battery 6 is detachably electrically connected to the electrical equipment 1. When the external battery 6 is connected, the internal system 3 performs ADC detection on the current voltage value of the external battery 6. If the voltage value of the external battery 6 is higher than the normal operating voltage of the electrical equipment 1, the first switch group 4 is disconnected and the second switch group 5 is turned on.

[0026] The aforementioned detachable connection method can be a precision connector such as a Pogo pin, or a spring pin, that is, the spring pin can be electrically connected and fixed to the electrical device 1, and the external battery 6 can be detachably electrically connected to the spring pin.

[0027] The external battery 6 of this utility model can be configured to resemble the structure of a power bank.

[0028] Compared with the prior art, the advantages of this utility model are as follows: This utility model has a simple structure. A switch is added to the settings interface of the power-consuming device 1, such as a mobile phone, or the switch is a pop-up prompt. The user can choose to use the built-in battery 2 or the external battery 6 to power the mobile phone through the switch. When the external battery 6 is used, the power level of the external battery 6 can be detected in real time through the detection port and displayed on the mobile phone interface. The external battery 6 is directly connected to the mobile phone for use without waiting.

[0029] This invention can improve the current power storage problem of electrical equipment 1, avoid the bad experience caused by charging while using the device due to low battery power of the built-in battery 2, reduce users' battery anxiety, and increase user experience.

[0030] When put into use, if the switch selects the external battery 6, this utility model detects whether the external battery 6 is electrically connected. If connected, the external battery 6 is used to power the mobile phone, and the mobile phone maintains normal battery life.

[0031] When the built-in battery 2 is used, the third and fourth MOSFETs Q4 are turned on, and the built-in battery 2 powers the mobile phone. At this time, the first and second MOSFETs Q2 are turned off. When the external battery 6 is connected, this invention uses an ADC detection module after voltage division by a voltage divider resistor to detect the current voltage state of the external battery 6 and then decides whether to use the external battery 6. When the voltage of the external battery 6 is higher than the normal operating voltage of the device 1, the switch control module 12 turns off the third and fourth MOSFETs Q4 and turns on the first and second MOSFETs Q2. However, because there will be a time gap between the two sets of switches, a capacitor group consisting of multiple capacitors is added in this invention to control the voltage.

[0032] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. An external battery power supply system for electrical equipment, comprising electrical equipment (1), wherein the electrical equipment (1) includes a built-in battery (2) and an internal system (3), characterized in that: It also includes an external battery (6) and a switching switch configured on the electrical equipment (1); A first switch group (4) is configured between the internal system (3) and the built-in battery (2); A second switch group (5) is configured between the internal system (3) and the external battery (6); The switching control uses a built-in battery (2) or an external battery (6) to power the electrical equipment (1).

2. The external battery power supply system for electrical equipment according to claim 1, characterized in that: The external battery (6) is connected to the internal system (3) through a voltage divider circuit (8). The voltage divider circuit (8) includes a first voltage divider resistor (R1) and a second voltage divider resistor (R2). The connection between the first voltage divider resistor (R1) and the second voltage divider resistor (R2) is electrically connected to the external battery voltage detection port (9) of the internal system (3).

3. The external battery power supply system for electrical equipment according to claim 1, characterized in that: The electrical equipment (1) also includes a capacitor bank (7), which includes several capacitors connected in parallel. The power supply port (10) of the internal system (3) is electrically connected to the first switch group (4) and the second switch group (5) through the capacitor bank (7).

4. The external battery power supply system for electrical equipment according to claim 1, characterized in that: It also includes a switch control module (12), the input of which is electrically connected to the output control port (11) of the internal system (3), and the output is electrically connected to the control terminals of the first switch group (4) and the second switch group (5).

5. The external battery power supply system for electrical equipment according to claim 4, characterized in that: The first switch group (4) includes a third MOS transistor (Q3) and a fourth MOS transistor (Q4). The source of the third MOS transistor (Q3) is connected to the positive terminal of the built-in battery (2), and the drain is electrically connected to the drain of the fourth MOS transistor (Q4). The source of the fourth MOS transistor (Q4) is connected to the internal system (3). The gates of the third MOS transistor (Q3) and the fourth MOS transistor (Q4) are electrically connected to the output terminal of the switch control module (12).

6. The external battery power supply system for electrical equipment according to claim 4 or 5, characterized in that: The second switch group (5) includes a first MOS transistor (Q1) and a second MOS transistor (Q2). The source of the second MOS transistor (Q2) is connected to the positive terminal of the external battery (6), and the drain is electrically connected to the drain of the first MOS transistor (Q1). The source of the first MOS transistor (Q1) is connected to the internal system (3). The gates of the first MOS transistor (Q1) and the second MOS transistor (Q2) are electrically connected to the output terminal of the switch control module (12).

7. The external battery power supply system for electrical equipment according to claim 1, characterized in that: The negative terminals of the built-in battery (2) and the external battery (6) are grounded.

8. The external battery power supply system for electrical equipment according to claim 2, characterized in that: The voltage divider circuit (8) is grounded.

9. The external battery power supply system for electrical equipment according to claim 1, characterized in that: The external battery (6) is detachably connected to the electrical equipment (1). When the external battery (6) is connected, the switch disconnects the first switch group (4) and controls the second switch group (5) to conduct so that the external battery (6) can supply power to the electrical equipment (1) and the electrical equipment (1) can continue to operate normally.

10. The external battery power supply system for electrical equipment according to claim 6, characterized in that: The external battery (6) is detachably connected to the electrical equipment (1). When an external battery (6) is connected, the internal system (3) performs ADC detection on the current voltage value of the external battery (6). If the voltage value of the external battery (6) is higher than the normal operating voltage of the electrical equipment (1), the first switch group (4) is disconnected and the second switch group (5) is turned on.

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