Charging slow start device and electronic equipment

Abstract

The utility model discloses a charging slow start device and electronic equipment, the device comprises an external confirmation unit and a switch unit, one input end of the switch unit is electrically connected with the external confirmation unit, and the other input end of the switch unit is electrically connected with an interface management circuit of the applied electronic equipment. The output end of the switch unit is electrically connected with a post-stage circuit of the electronic equipment; the external confirmation unit is used for inputting an external confirmation signal; the interface management circuit is used for detecting the plugging action of the power line. When the switch unit does not receive the external confirmation signal or the identification signal is that the power line is pulled out, the switch unit is in a disconnected state, and charging is not started; when the switch unit receives an external confirmation signal and an identification signal indicates that a power line is inserted, the switch unit enters a conducting state, so that an external power supply, the power line, a product interface and a post-stage circuit are sequentially conducted, slow charging start is realized, and electric shock caused by mistaken touch or damage of the power line is avoided; and the charging safety of the electronic equipment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hardware circuit technology, and in particular to a charging soft start device and electronic device. Background Technology

[0002] In the prior art, electronic devices are usually charged using power adapters. In order to improve the consumer experience, electronic devices are usually charged immediately after being connected to the power adapter, without a secondary confirmation function. This can easily lead to electric shock due to accidental contact or damage to the power cord itself.

[0003] In response to the aforementioned technical problems, those skilled in the art urgently need to design a charging soft-start device to improve charging safety. Utility Model Content

[0004] To address the aforementioned shortcomings, the first technical problem this utility model aims to solve is to provide a charging soft-start device and electronic device that achieves the charging soft-start function of the electronic device through power cord plug-in / unplug detection and external confirmation, thereby improving charging safety.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A charging soft-start device is applied to an electronic device. The electronic device includes a product interface and an interface management circuit. The device includes an external confirmation unit and a switching unit. One input terminal of the switching unit is electrically connected to the external confirmation unit, and the other input terminal of the switching unit is electrically connected to the interface management circuit. The output terminal of the switching unit is electrically connected to the subsequent circuit of the electronic device. The external confirmation unit is used to input an external confirmation signal and transmit it to the switching unit. The interface management circuit is used to detect power cord insertion and removal actions and transmit a corresponding identification signal to the switching unit. The switching unit switches on and off according to the received external confirmation signal and identification signal to realize charging soft start.

[0007] In a preferred embodiment, the device further includes a voltage acquisition unit, which is electrically connected to both the product interface and the switching unit, and is used to acquire the power supply voltage of the electronic device.

[0008] In a preferred embodiment, the switching unit includes an isolation circuit and a switching circuit; the isolation circuit is electrically connected to one input terminal of the interface management circuit and the switching circuit, the other input terminal of the switching circuit is electrically connected to the external confirmation unit, and the output terminal of the switching circuit is electrically connected to the subsequent circuit.

[0009] In a preferred embodiment, the external confirmation unit includes an electrically connected human-machine interface component and a control circuit, wherein the control circuit is electrically connected to the switching unit.

[0010] In a preferred embodiment, the switching circuit includes a logic AND gate.

[0011] In a preferred embodiment, the isolation circuit includes a first field-effect transistor (FET) and a second FET. The first FET is electrically connected to the interface management circuit, and the first FET is electrically connected to the second FET through a voltage regulator circuit. The second FET is electrically connected to one input terminal of the switching circuit.

[0012] In a preferred embodiment, the voltage acquisition circuit includes a first voltage divider resistor and a second voltage divider resistor. One end of the first voltage divider resistor is electrically connected to the product interface, and the other end of the first voltage divider resistor is electrically connected to one end of the second voltage divider resistor. The other end of the second voltage divider resistor is grounded. The connection point of the first voltage divider resistor and the second voltage divider resistor is electrically connected to the switching unit.

[0013] In a preferred embodiment, the human-computer interaction component includes buttons and / or a touchscreen.

[0014] An electronic device includes the above-described charging soft-start device.

[0015] In a preferred embodiment, the external confirmation unit of the charging soft-start device includes an electrically connected human-machine interface component and a control circuit; the electronic device includes a microprocessor, on which the control circuit is integrated.

[0016] The beneficial effects of this utility model after adopting the above technical solution are:

[0017] The present invention relates to a charging soft-start device and electronic device. The charging soft-start device includes an external confirmation unit and a switching unit. One input terminal of the switching unit is electrically connected to the external confirmation unit, and the other input terminal is electrically connected to the interface management circuit of the applied electronic device. The output terminal of the switching unit is electrically connected to the subsequent circuit of the electronic device. The external confirmation unit is used to input an external confirmation signal and transmit it to the switching unit. The interface management circuit is used to detect the insertion and removal of the power cord and transmit the corresponding identification signal to the switching unit. When the switching unit does not receive an external confirmation signal, or when the identification signal is that the power cord is unplugged, the switching unit is in the off state and charging will not start. When the switching unit receives an external confirmation signal and the identification signal is that the power cord is plugged in, the switching unit enters the on state, so that the external power supply, power cord, product interface and subsequent circuit are sequentially turned on, realizing charging soft start and avoiding electric shock caused by accidental contact or power cord damage; thus ensuring the safety of charging electronic devices. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the charging soft-start device of this utility model;

[0019] Figure 2 This is a circuit diagram of the charging soft-start device in the embodiment;

[0020] In the diagram: 1-Switch unit, 2-Voltage acquisition circuit, 3-External confirmation unit. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] like Figure 1 and Figure 2 As shown, according to an embodiment of the first aspect of this utility model, the charging soft-start device includes an external confirmation unit 3 and a switch unit 1. One input terminal of the switch unit 1 is electrically connected to the external confirmation unit 3, and the other input terminal of the switch unit 1 is electrically connected to the interface management circuit of the applied electronic device. The output terminal of the switch unit 1 is electrically connected to the subsequent circuit of the electronic device. It should be noted that the subsequent circuit includes the charging circuit on the electronic device, etc. The external confirmation unit 3 is used to input an external confirmation signal and transmit it to the switch unit 1. The interface management circuit is used to detect the action of plugging and unplugging the power cord into the product interface and transmit the corresponding identification signal to the switch unit 1. The product interface is the built-in interface on the electronic device, which may be, but is not limited to, a USB-C interface. The switch unit 1 switches on and off according to the received external confirmation signal and identification signal to realize the charging soft start.

[0023] When the power cord is unplugged from the product interface, the interface pipeline circuit detects and transmits an identification signal to the switch unit 1, causing the switch unit 1 to be in the off state. Alternatively, if the external confirmation unit 3 does not input an external confirmation signal, the switch unit is in the off state. At this time, the electronic device will not charge, thus avoiding accidental charging start caused by the data cable being inserted into the product interface.

[0024] When the power cord is inserted into the product interface, the interface management circuit detects it and transmits the corresponding identification signal to the switch unit 1. The external confirmation unit 3 inputs an external confirmation signal, which is transmitted to the switch unit 1. The switch unit 1 then enters the conduction state, enabling the external power supply to be connected to the subsequent circuit of the electronic device through the product interface, thereby starting charging.

[0025] As can be seen, this utility model achieves a soft-start charging function through two-level confirmation, avoiding electric shock caused by accidental contact or damage to the power cord. Moreover, this utility model has the advantages of simple structure and easy implementation.

[0026] like Figure 1 and Figure 2As shown, in some embodiments of this utility model, the switching unit 1 includes an isolation circuit and a switching circuit; the isolation circuit is electrically connected to one input terminal of the interface management circuit and the switching circuit, the other input terminal of the switching circuit is electrically connected to the external confirmation unit 3, and the output terminal of the switching circuit is electrically connected to the subsequent circuit.

[0027] The switching circuit includes a logic AND gate, and the isolation circuit includes a first field-effect transistor Q1 and a second field-effect transistor Q2. The source of the first field-effect transistor Q1 is electrically connected to the interface management circuit. The drains of the first field-effect transistor Q1 and the second field-effect transistor Q2 are respectively connected to the connection terminals of the first voltage divider resistor R1 and the second voltage divider resistor R2. The gate of the first field-effect transistor Q1 is electrically connected to the gate of the second field-effect transistor Q2 through a voltage regulator circuit. The source of the second field-effect transistor Q2 is electrically connected to one input terminal of the logic AND gate.

[0028] When the power cord is inserted into the product interface, the interface management circuit detects the power cord and outputs a corresponding identification signal (voltage) to the source of the first field-effect transistor Q1. Q1 then conducts. This identification signal passes through Q1 and the voltage regulator circuit to one input of the AND gate, resulting in a high-level input. Similarly, when the interface circuit does not detect the power cord being inserted, its output identification signal turns off Q1. The signal transmitted to the AND gate is low, causing the AND gate to output a low level, meaning the switch is in the off state. Even if the AND gate receives an external confirmation signal, it remains off, preventing accidental activation and potential safety hazards. Furthermore, the switch circuit can be an OR gate, a digital switch, etc., as long as it ensures that the circuit only enters the conducting state after the power cord is inserted and an external confirmation signal is input.

[0029] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the external confirmation unit 3 includes an electrically connected human-machine interaction component and a control circuit, and the control circuit is electrically connected to the switch unit 1.

[0030] The human-computer interaction components may include buttons and / or touch screens, and the control circuit may include, but is not limited to, microprocessors such as microcontrollers. When it is confirmed that charging is required, after confirmation via buttons or touch screen, the input of the logic AND gate will receive a high level.

[0031] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the charging soft start device further includes a voltage acquisition unit, which is electrically connected to the product interface and the switch unit 1 respectively, and is used to acquire the power supply voltage of the electronic device to provide the working voltage for the charging soft start device of this utility model. Of course, the battery can be directly set in this utility model.

[0032] The voltage acquisition circuit 2 includes a first voltage divider resistor R1 and a second voltage divider resistor R2. One end of the first voltage divider resistor R1 is electrically connected to the product interface, and the other end of the first voltage divider resistor R1 is electrically connected to one end of the second voltage divider resistor R2. The other end of the second voltage divider resistor R2 is grounded (GND). The connection end of the first voltage divider resistor R1 and the second voltage divider resistor R2 is electrically connected to the switching unit 1. When the power cord (usually the power cord is also the data cord) is inserted into the product interface, that is, after a connection is established with the electronic device, the positive terminal of the power supply of the product interface is connected to the first voltage divider resistor R1 and the second voltage divider resistor R2, so that the voltage acquisition circuit 2 acquires the power supply voltage. The power supply is divided by the first voltage divider resistor R1 and the second voltage divider resistor R2 to supply power to the charging soft start device of this invention. Specifically, it provides the working voltage for the first field-effect transistor Q1 and the second field-effect transistor Q2 in the isolation circuit, and provides the working voltage for the logic AND gate and the external confirmation unit 3, etc.

[0033] According to an embodiment of the second aspect of this utility model, the electronic device includes the charging soft-start device described in the first aspect of this utility model. Because the electronic device of this utility model is equipped with the charging soft-start device, when it is charging, the external power supply is only connected to the subsequent circuit through the charging soft-start device after the power cord is inserted into the product interface and confirmed twice via a button or touchscreen. This achieves charging soft-start, avoiding electric shock caused by accidental contact or damage to the power cord itself, and improving charging safety.

[0034] In some embodiments of this utility model, the external confirmation unit of the charging soft start device includes an electrically connected human-machine interface component and a control circuit; the electronic device includes a microprocessor, and the control circuit is integrated on the microprocessor. That is, by utilizing the microprocessor on the electronic device, the cost is reduced and the space occupied is saved.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, improvements to equivalent charging soft-start devices and electronic devices made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A charge ramp-up device applied to an electronic device, the electronic device comprising a product interface and an interface management circuit, characterized in that, The device comprises an external confirmation unit and a switch unit, one input end of the switch unit is electrically connected with the external confirmation unit, another input end of the switch unit is electrically connected with the interface management circuit, and the output end of the switch unit is electrically connected with the rear circuit of the electronic device; The external confirmation unit is used for inputting an external confirmation signal and transmitting the signal to the switch unit; The interface management circuit is used for detecting the plug-in and plug-out action of the power line and transmitting a corresponding identification signal to the switch unit; The switch unit is turned on or off according to the received external confirmation signal and identification signal to realize the slow start of charging.

2. The charge cushion start device of claim 1, wherein, The device further comprises a voltage acquisition unit, which is electrically connected with the product interface and the switch unit respectively and is used for acquiring the power voltage of the electronic device.

3. The charge-augmented start-assist device of claim 1, wherein, The switch unit comprises an isolation circuit and a switch circuit; The isolation circuit electrically connects the interface management circuit with one input end of the switch circuit, another input end of the switch circuit is electrically connected with the external confirmation unit, and the output end of the switch circuit is electrically connected with the rear circuit.

4. The charge-augmented start-assist device of claim 1, wherein, The external confirmation unit comprises an electrically connected human-computer interaction component and control circuit, and the control circuit is electrically connected with the switch unit.

5. The charge-augmented start-assist device of claim 3, wherein, The switch circuit comprises a logic AND gate.

6. The charge-augmented start-assist device of claim 3, wherein, The isolation circuit comprises a first field effect transistor and a second field effect transistor, the first field effect transistor is electrically connected with the interface management circuit, the first field effect transistor is electrically connected with the second field effect transistor through a voltage stabilizing circuit, and the second field effect transistor is electrically connected with one input end of the switch circuit.

7. The charge-augmented start-assist device of claim 2, wherein, The voltage acquisition unit comprises a first voltage dividing resistor and a second voltage dividing resistor, one end of the first voltage dividing resistor is electrically connected with the product interface, another end of the first voltage dividing resistor is electrically connected with one end of the second voltage dividing resistor, and another end of the second voltage dividing resistor is grounded; The connection ends of the first voltage dividing resistor and the second voltage dividing resistor are electrically connected with the switch unit.

8. The charge-augmented start-assist device of claim 4, wherein, The human-computer interaction component comprises a key and / or a touch screen.

9. An electronic device, comprising: The device comprises the slow start charging device of any one of claims 1 to 8.

10. The electronic device of claim 9, wherein, The external confirmation unit of the slow start charging device comprises an electrically connected human-computer interaction component and control circuit, the electronic device comprises a microprocessor, and the control circuit is integrated on the microprocessor.

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