Power-on control circuit and mobile device

Abstract

The utility model relates to a power-on control circuit and a mobile device, the power-on control circuit is applied to the mobile device, the mobile device comprises a mainboard and a battery, the power-on control circuit comprises a mainboard connection module, a battery connection module and a connection control circuit, the mainboard connection module is connected with the input end of the mainboard, and the battery connection module is connected with the output end of the battery. The connection control circuit is connected with the mainboard connection module and the battery connection module, and the connection control circuit is used for disconnecting the mainboard connection module and the battery connection module and then conducting the connection between the mainboard connection module and the battery connection module under the condition that the mainboard is dormant, so that the battery powers on the mainboard again. When the mobile equipment is forcibly powered off, the mobile equipment can be powered again, and internal elements of the mobile equipment can be protected.

Description

Technical Field

[0001] This application relates to the technical field of controlling power-off of mobile devices, and particularly to a power-on control circuit and a mobile device. Background Art

[0002] Currently, in existing mobile devices, there is a built-in sleep system in the main board system. During the process of testing the screen of the mobile device, the built-in sleep system in the main board system will activate the sleep automatic protection function, causing the mobile device to be forcibly powered off.

[0003] The existing solution requires disassembling the mobile device, unplugging the connection wire between the main board and the battery, disconnecting the connection between the main board and the battery, and then reconnecting the main board and the battery so that the mobile device can be powered on again.

[0004] Through the existing solution, the process is cumbersome and easily causes damage to the internal components of the main board and the battery. Summary of the Utility Model

[0005] Based on this, it is necessary to provide a power-on control circuit and a mobile device for realizing power supply to the mobile device again and protecting the internal components of the mobile device.

[0006] In a first aspect, this application discloses a power-on control circuit applied to a mobile device. The mobile device includes a main board and a battery. The power-on control circuit includes:

[0007] A main board connection module connected to the input end of the main board;

[0008] A battery connection module connected to the output end of the battery;

[0009] A connection control circuit connecting the main board connection module and the battery connection module, configured to disconnect the connection between the main board connection module and the battery connection module and then conduct the connection between the main board connection module and the battery connection module when the main board is in a sleep state, so that the battery powers on the main board again.

[0010] In one embodiment, the connection control circuit includes:

[0011] A switch module configured to output a power-on trigger signal when closed;

[0012] A first connection control module connected to the first end of the switch module, configured to output a conduction control signal when receiving the power-on trigger signal;

[0013] A second connection control module, connected to the second end of the switch module, the first connection control module, the main board connection module, and the battery connection module, is configured to conduct when receiving the conduction control signal, so that the main board connection module is connected to the battery connection module.

[0014] In one embodiment, the first connection control module includes:

[0015] A first switching element, the first end of the first switching element is connected to the first end of the switch module, the second end of the first switching element is grounded, and is configured to conduct and output a first control signal when receiving the power-on trigger signal;

[0016] A first voltage-dividing resistor, one end of the first voltage-dividing resistor is connected to the first end of the first switching element, and the other end of the first voltage-dividing resistor is connected to the second end of the switch module;

[0017] A second switching element, the first end of the second switching element is connected to the third end of the first switching element, the second end of the second switching element is grounded, and the third end of the second switching element is connected to the second connection control module, and is configured to conduct and output the conduction control signal when receiving the first control signal;

[0018] A protection resistor, one end of the protection resistor is connected to the third end of the second switching element, and the other end of the protection resistor is connected to the first end of the second switching element.

[0019] In one embodiment, the first switching element and the second switching element include any one of the following: an NPN-type triode and an NMOS transistor.

[0020] In one embodiment, the second connection control module includes:

[0021] A third switching element, the first end of the third switching element is connected to the first connection unit and the second end of the switch module, the second end of the third switching element is connected to the main board connection module, and the third end of the third switching element is connected to the battery connection module, and is configured to conduct when receiving the conduction control signal, so that the main board connection module is connected to the battery connection module;

[0022] A current-limiting resistor, one end of the current-limiting resistor is connected to the first end of the third switching element, and the other end of the current-limiting resistor is connected to the second end of the third switching element;

[0023] A first capacitor, one end of the first capacitor is connected to the first end of the third switching element, and the other end of the first capacitor is grounded;

[0024] A second voltage-dividing resistor, one end of the second voltage-dividing resistor is connected to the first end of the third switching element, and the other end of the second voltage-dividing resistor is grounded.

[0025] In one embodiment, the third switching element includes any one of the following: a PNP type triode and a PMOS transistor.

[0026] In one embodiment, the switching module is further configured to stop outputting a power-on trigger signal when it is disconnected;

[0027] The first connection control module is further configured to output a disconnection control signal when the power-on trigger signal is not received;

[0028] The second connection control module is further configured to turn off when the disconnection control signal is received, so that the main board connection module is disconnected from the battery connection module.

[0029] In one embodiment, when the main board is in a sleep state, the switching module is disconnected to disconnect the main board connection module from the battery connection module. When the disconnection between the main board connection module and the battery connection module is completed, the switching module is closed, and the main board connection module is reconnected to the battery connection module, so that the battery re-supplies power to the main board.

[0030] In one embodiment, it further includes:

[0031] A display module, connected to the battery connection module and the main board connection module, and configured to output a display signal when the main board connection module and the battery connection module are conducting.

[0032] In a second aspect, the present application further discloses a mobile device, including:

[0033] A main board; and

[0034] A battery; and

[0035] The power-on control circuit as described in the first aspect.

[0036] During the process of testing the screen of the mobile device, for the above power-on control circuit and mobile device, when the main board is in a sleep state, after controlling the disconnection of the connection between the main board connection module and the battery connection module through the power-on control circuit, and then conducting the connection between the main board connection module and the battery connection module, the battery of the mobile device re-supplies power to the main board, which can realize the re-power supply of the mobile device without unplugging the circuit connection between the main board and the battery, thereby protecting the components in the main board and the battery. Description of the Drawings

[0037] To more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0038] Figure 1 It is a module structure of a power-on control circuit for an embodiment;

[0039] Figure 2 For Figure 1 Another module structure of the power-on control circuit in

[0040] Figure 3 For Figure 1 The circuit schematic diagram of the power-on control circuit in

[0041] Explanation of reference numerals:

[0042] Power-on control circuit 100, main board connection module 101, battery connection module 102, connection control circuit 103;

[0043] Mobile device 200, main board 201, battery 202;

[0044] Switch module 301, first connection control module 302, second connection control module 303;

[0045] Display module 401. Detailed implementation manners

[0046] To facilitate the understanding of the present application, the following will describe the present application more comprehensively with reference to the relevant accompanying drawings. Embodiments of the present application are given in the accompanying drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0048] It will be appreciated that the terms "first", "second", etc. used in the present application may be used herein to describe various components, but these components are not limited by these terms. These terms are only used to distinguish a first component from another component. For example, without departing from the scope of the present application, the first connection control module may be referred to as the second connection control module, and similarly, the second connection control module may be referred to as the first connection control module. Both the first connection control module and the second connection control module are modules in the connection control circuit, but they are not the same module.

[0049] It will be appreciated that for "connection" in the following embodiments, if there is transmission of electrical signals or data between the connected circuits, modules, units, etc., it should be understood as "electrical connection", "communication connection", etc.

[0050] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / comprising" or "has / including" etc. specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the related listed items.

[0051] During the process of testing the screen of a mobile device, the built-in sleep system in the main board system will activate the sleep automatic protection function, causing the mobile device to be forcibly powered off. The existing solution requires disassembling the mobile device and unplugging the connection line between the main board and the battery. After disconnecting the connection between the main board and the battery, then reconnect the main board and the battery again so that the mobile device can be powered on and restarted. The entire process of the existing solution is complex to operate, and unplugging the connection line between the main board and the battery will damage the components of the main board and the battery.

[0052] In an exemplary embodiment, as Figure 1 shown, the power-on control device 100 is applied to the mobile device 200. The mobile device 200 includes a main board 201 and a battery 202. The power-on control circuit 100 includes: a main board connection module 101, a battery connection module 102, and a connection control circuit 103. The main board connection module 101 is connected to the input end of the main board 201, the battery connection module 102 is connected to the output end of the battery 202, and the connection control circuit 103 connects the main board connection module 101 and the battery connection module 102. When the main board 201 is in a sleep state, after disconnecting the connection between the main board connection module 101 and the battery connection module 102, then conducting the connection between the main board connection module 101 and the battery connection module 102, so that the battery 201 re-powers the main board 202.

[0053] Among them, a main board connector is provided inside the main board 201 of the mobile device 200. The main board connector is arranged at the input end of the main board 201 and is connected to the main board connector through the main board connection module 101, so that the main board connection module 101 is connected to the input end of the main board 201, and the power-on control circuit 100 is connected to the main board 201. A battery connector is provided inside the battery 202 of the mobile device 200. The battery connector is arranged at the output end of the battery 202 and is connected to the battery connector through the battery connection module 102, so that the battery connection module 102 is connected to the output end of the battery 202, and the power-on control circuit 100 is connected to the battery 202.

[0054] Optionally, during the process of testing the screen of the mobile device 200, when the main board 202 is in a sleep state, after controlling the power-on control circuit 100 to disconnect the connection between the main board connection module 101 and the battery connection module 102, and then conducting the connection between the main board connection module 101 and the battery connection module 102, the battery 201 of the mobile device 200 can re-power the main board 202, enabling re-powering of the mobile device without unplugging the circuit connection between the main board and the battery, thereby protecting the components inside the main board and the battery.

[0055] In an exemplary embodiment, as Figure 2 shown, the connection control circuit 103 includes: a switch module 301, a first connection control module 302, and a second connection control module 303. The switch module is used to output a power-on trigger signal when closed. The first connection control module 302 is connected to the first end of the switch module 301 and is used to output a conduction control signal when receiving the power-on trigger signal. The second connection control module 303 is connected to the second end of the switch module 301, the first connection control module 302, the main board connection module 101, and the battery connection module 102, and is used to conduct when receiving the conduction control signal, so that the main board connection module 101 is connected to the battery connection module 102.

[0056] Optionally, by closing the switch module 301 in the power-on control circuit 100, the switch module 301 outputs a power-on trigger signal. When the first connection control module 302 in the power-on control circuit 100 receives the power-on trigger signal, it conducts and outputs a conduction control signal to the second connection control module 303. When the second connection control module 303 receives the conduction control signal, it conducts, and the connection between the main board connection module 101 and the battery connection module 102 is established, enabling the battery 202 of the mobile device 200 to re-power the main board 202, enabling control of the battery of the mobile device to power the main board without unplugging the circuit connection between the main board and the battery, thereby protecting the components inside the main board and the battery.

[0057] In an exemplary embodiment, as Figure 2 shown, the switch module 301 is further configured to stop outputting a power-on trigger signal in the case of disconnection. The first connection control module 302 is further configured to output a disconnection control signal in the case of not receiving the power-on trigger signal. The second connection control module 303 is further configured to cut off in the case of receiving the disconnection control signal, so that the main board connection module 101 is disconnected from the battery connection module 102.

[0058] Optionally, by disconnecting the switch module 301 in the power-on control circuit 100, the switch module 301 stops outputting the power-on trigger signal. The first connection control module 302 in the power-on control circuit 100 cuts off and outputs a disconnection control signal to the second connection control module 303 in the case of not receiving the power-on trigger signal. The second connection control module 303 cuts off in the case of receiving the disconnection control signal, and the main board connection module 101 is disconnected from the battery connection module 102, so that the battery 202 of the mobile device 200 stops supplying power to the main board 201. It is possible to control the battery of the mobile device to stop supplying power to the main board without unplugging the circuit connection between the main board and the battery, thereby protecting the components in the main board and the battery.

[0059] In an exemplary embodiment, as Figure 2 shown, in the case where the main board 202 is in a sleep state, the switch module 301 is disconnected, so that the main board connection module 101 is disconnected from the battery connection module 102. In the case where the main board connection module 101 and the battery connection module 102 are completely disconnected, the switch module 301 is closed, and the main board connection module 101 is reconnected to the battery connection module 102, so that the battery 201 powers on the main board 202 again.

[0060] Optionally, during the process of testing the screen of the mobile device 200, when the main board 202 is in the sleep state, first, by disconnecting the switch module 301, the switch module 301 stops outputting the power-on trigger signal. In the case where the first connection control module 302 does not receive the power-on trigger signal, it is cut off and outputs a disconnection control signal to the second connection control module 303. When the second connection control module 303 receives the disconnection control signal, it is cut off, and the connection between the main board connection module 101 and the battery connection module 102 is disconnected, so that the battery 202 of the mobile device 200 stops supplying power to the main board 201. Then, by closing the switch module 301, the switch module 301 outputs the power-on trigger signal. When the first connection control module 302 receives the power-on trigger signal, it conducts and outputs a conduction control signal to the second connection control module 303. When the second connection control module 303 receives the conduction control signal, it conducts, and the connection between the main board connection module 101 and the battery connection module 102 is established, so that the battery 202 of the mobile device 200 resumes supplying power to the main board 201. It is possible to realize the re-power supply of the mobile device without unplugging the circuit connection between the main board and the battery, thereby protecting the components in the main board and the battery.

[0061] In an exemplary embodiment, as Figure 2 shown, the power-on control circuit 100 further includes: a display module 401. The display module 401 is connected to the main board connection module 101 and the battery connection module 102, and is configured to output a display signal when the main board connection module 101 and the battery connection module 102 are conducting.

[0062] Wherein, the display signal includes lighting a lamp of one color.

[0063] Optionally, when the main board connection module 101 and the battery connection module 102 are conducting, the display module 401 receives the supply voltage output by the battery 202 and outputs a display signal according to the supply voltage. Additionally, when the main board connection module 101 and the battery connection module 102 are disconnected, the display module 401 outputs a non-display signal because it does not receive the supply voltage output by the battery 202.

[0064] Wherein, the non-display signal includes one of the following: a lamp of a different color from the display signal, or, being extinguished.

[0065] In an exemplary embodiment, as Figure 3As shown in the figure, the first connection control module 302 includes: a first switching element, a first voltage-dividing resistor, a second switching element, and a protection resistor. The first end of the first switching element is connected to the first end of the switching module 301, and the second end of the first switching element is grounded, and is configured to conduct and output a first control signal when receiving a power-on trigger signal. One end of the first voltage-dividing resistor is connected to the first end of the first switching element, and the other end of the first voltage-dividing resistor is connected to the second end of the switching module 301. The first end of the second switching element is connected to the third end of the first switching element, the second end of the second switching element is grounded, and the third end of the second switching element is connected to the second connection control module 303, and is configured to conduct and output a conduction control signal when receiving the first control signal. One end of the protection resistor is connected to the third end of the second switching element, and the other end of the protection resistor is connected to the first end of the second switching element.

[0066] Wherein, the first switching element is Figure 3 the switching element Q1 in Figure 3 the resistor R2 in Figure 3 the switching element Q2 in Figure 3 the resistor R5 in. Additionally, in Figure 3 the first switching element and the second switching element are drawn as triodes, but in this application Figure 3 the drawn triodes are only an embodiment of the first switching element and the second switching element, and the first switching element and the second switching element are not specifically limited in this application.

[0067] Optionally, by closing the switching module 301 and outputting a power-on trigger signal, when the first switching element receives the power-on trigger signal, it conducts and outputs a first control signal to the second switching element. When the second switching element receives the first control signal, it conducts and outputs a conduction control signal. When the second connection control module 303 receives the conduction control signal, it conducts the connection between the main board connection module 101 and the battery connection module 102, enabling the battery 202 of the mobile device 200 to supply power to the main board 201 again. It can control the battery of the mobile device to supply power to the main board without unplugging the circuit connection between the main board and the battery, thereby protecting the components in the main board and the battery.

[0068] In an exemplary embodiment, as Figure 3 shown, the first switching element is further configured to cut off and output a second control signal when not receiving the power-on trigger signal. The second switching element is further configured to cut off and output a disconnection control signal when receiving the second control signal.

[0069] Optionally, by disconnecting the switch module 301, when the first switching element does not receive the power-on trigger signal, it is turned off and outputs a second control signal to the second switching element. When the second switching element receives the second control signal, it is turned off and outputs a disconnection control signal. When the second connection control module 303 receives the disconnection control signal, it disconnects the connection between the main board connection module 101 and the battery connection module 102, so that the battery 202 of the mobile device 200 stops supplying power to the main board 201. It can control the battery of the mobile device to stop supplying power to the main board without unplugging the circuit connection between the main board and the battery, thereby protecting the components in the main board and the battery.

[0070] In an exemplary embodiment, as Figure 3 shown, during the process of testing the screen of the mobile device 200, when the main board 201 is in the sleep state, first, by disconnecting the switch module 301, when the first switching element does not receive the power-on trigger signal, it is turned off and outputs a second control signal to the second switching element. When the second switching element receives the second control signal, it is turned off and outputs a disconnection control signal. When the second connection control module 303 receives the disconnection control signal, it disconnects the connection between the main board connection module 101 and the battery connection module 102, so that the battery 202 of the mobile device 200 stops supplying power to the main board 201. Then, by closing the switch module 301 and outputting a power-on trigger signal, when the first switching element receives the power-on trigger signal, it is turned on and outputs a first control signal to the second switching element. When the second switching element receives the first control signal, it is turned on and outputs a conduction control signal. When the second connection control module 303 receives the conduction control signal, it conducts the connection between the main board connection module 101 and the battery connection module 102, so that the battery 202 of the mobile device 200 resumes supplying power to the main board 201. It can realize the re-power supply of the mobile device without unplugging the circuit connection between the main board and the battery, thereby protecting the components in the main board and the battery.

[0071] In an exemplary embodiment, as Figure 3 shown, the first switching element and the second switching element include any one of the following: NPN-type triode and NMOS transistor.

[0072] Wherein, when the first switching element includes an NPN-type triode, the base of the first switching element is connected to the first end of the switch module 301, the emitter of the first switching element is grounded, one end of the first voltage-dividing resistor is connected to the base of the first switching element, and the other end of the first voltage-dividing resistor is connected to the second end of the switch module 301.

[0073] When the first switching element includes an NMOS transistor, the gate of the first switching element is connected to the first end of the switching module 301, the source of the first switching element is grounded, one end of the first voltage-dividing resistor is connected to the gate of the first switching element, and the other end of the first voltage-dividing resistor is connected to the second end of the switching module 301.

[0074] When the second switching element includes an NPN transistor, the base of the second switching element is connected to the collector of the first switching element, the emitter of the second switching element is grounded, the collector of the second switching element is connected to the second connection control module 303, one end of the protection resistor is connected to the collector of the second switching element, and the other end of the protection resistor is connected to the base of the second switching element.

[0075] When the second switching element includes an NMOS transistor, the gate of the second switching element is connected to the drain of the first switching element, the source of the second switching element is grounded, the drain of the second switching element is connected to the second connection control module 303, one end of the protection resistor is connected to the drain of the second switching element, and the other end of the protection resistor is connected to the gate of the second switching element.

[0076] In an exemplary embodiment, as Figure 3 shown, the second connection control module includes: a third switching element, a current-limiting resistor, a first capacitor, and a second voltage-dividing resistor. The first end of the third switching element is connected to the first connection unit 302 and the second end of the switching module 301. The second end of the third switching element is connected to the main board connection module 101. The third end of the third switching element is connected to the battery connection module 102 and is used to conduct when receiving a conduction control signal, so that the main board connection module 101 is connected to the battery connection module 102. One end of the current-limiting resistor is connected to the first end of the third switching element, and the other end of the current-limiting resistor is connected to the second end of the third switching element. One end of the first capacitor is connected to the first end of the third switching element, and the other end of the first capacitor is grounded. One end of the second voltage-dividing resistor is connected to the first end of the third switching element, and the other end of the second voltage-dividing resistor is grounded.

[0077] Wherein, the third switching element is Figure 3 the switching element Q3 in Figure 3 the resistor R3 in Figure 3 the capacitor C1 in Figure 3 the resistor R4 in Figure 3 In Figure 3 the third switching element is drawn as a triode, but in this application

[0078] Optionally, by closing the switch module 301 and outputting a power-on trigger signal to the first switching element, the first switching element conducts and outputs a first control signal when receiving the power-on trigger signal. When the second switching element receives the first control signal, it conducts and outputs a conduction control signal. When the third switching element receives the conduction control signal, it conducts, and the connection between the main board connection module 101 and the battery connection module 102 is established, enabling the battery 202 of the mobile device 200 to supply power to the main board 201 again. It is possible to achieve the battery of the mobile device supplying power to the main board without unplugging the circuit connection between the main board and the battery, thereby protecting the components within the main board and the battery.

[0079] In an exemplary embodiment, as Figure 3 shown, the third switching element is further configured to cut off when receiving a disconnection control signal, disconnecting the connection between the main board connection module 101 and the battery connection module 102.

[0080] Optionally, by disconnecting the switch module 301 and stopping the output of the power-on trigger signal, the first switching element cuts off and outputs a second control signal when not receiving the power-on trigger signal. When the second switching element receives the second control signal, it cuts off and outputs a disconnection control signal. When the third switching element receives the disconnection control signal, it cuts off, and the connection between the main board connection module 101 and the battery connection module 102 is disconnected, enabling the battery 202 of the mobile device 200 to stop supplying power to the main board 201. It is possible to achieve the battery of the mobile device stopping to supply power to the main board without unplugging the circuit connection between the main board and the battery, thereby protecting the components within the main board and the battery.

[0081] In an exemplary embodiment, as Figure 3As shown, during the process of testing the screen of the mobile device 200, when the main board 201 is in the sleep state, first, by disconnecting the switch module 301 and stopping the output of the power-on trigger signal, the first switching element is turned off and outputs a second control signal when it does not receive the power-on trigger signal. When the second switching element receives the second control signal, it is turned off and outputs a disconnection control signal. When the third switching element receives the disconnection control signal, it is turned off, and the connection between the main board connection module 101 and the battery connection module 102 is established, so that the battery 202 of the mobile device 200 stops supplying power to the main board 201. Then, by closing the switch module 301 and outputting the power-on trigger signal to the first switching element, the first switching element is turned on and outputs a first control signal when it receives the power-on trigger signal. When the second switching element receives the first control signal, it is turned on and outputs a conduction control signal. When the third switching element receives the conduction control signal, it is turned on, and the connection between the main board connection module 101 and the battery connection module 102 is established, so that the battery 202 of the mobile device 200 resumes supplying power to the main board 201. It is possible to realize the re-power supply of the mobile device without unplugging the circuit connection between the main board and the battery, thereby protecting the components in the main board and the battery.

[0082] In an exemplary embodiment, as Figure 3 shown, the third switching element includes any one of the following: a PNP-type triode and a PMOS transistor.

[0083] Among them, when the third switching element includes a PNP-type triode, the base of the third switching element is connected to the first connection unit 302 and the second end of the switch module 301, the emitter of the third switching element is connected to the main board connection module 101, the collector of the third switching element is connected to the battery connection module 102, one end of the current-limiting resistor is connected to the base of the third switching element, the other end of the current-limiting resistor is connected to the emitter of the third switching element, one end of the first capacitor is connected to the base of the third switching element, the other end of the first capacitor is grounded, one end of the second voltage-dividing resistor is connected to the base of the third switching element, and the other end of the second voltage-dividing resistor is grounded.

[0084] When the third switching element includes a PMOS transistor, the gate of the third switching element is connected to the first connection unit 302 and the second end of the switch module 301, the source of the third switching element is connected to the main board connection module 101, the drain of the third switching element is connected to the battery connection module 102, one end of the current-limiting resistor is connected to the gate of the third switching element, the other end of the current-limiting resistor is connected to the source of the third switching element, one end of the first capacitor is connected to the gate of the third switching element, the other end of the first capacitor is grounded, one end of the second voltage-dividing resistor is connected to the gate of the third switching element, and the other end of the second voltage-dividing resistor is grounded.

[0085] In an exemplary embodiment, as Figure 3 shown, the display module 401 includes: a third voltage-dividing resistor and an indicator light. One end of the third voltage-dividing resistor is connected to the battery connection module 102, the other end of the third voltage-dividing resistor is connected to the positive electrode of the indicator light, and the negative electrode of the indicator light is connected to the battery connection module 102.

[0086] Among them, the third voltage-dividing resistor is Figure 3 the resistor R6 in Figure 3 and the indicator light is the indicator light D1 in

[0087] This application also provides a mobile device, including: a main board, a battery, and a power-on control circuit, where the power-on control circuit is the power-on control circuit in any of the above embodiments.

[0088] It can be understood that the above power-on control circuit and mobile device can also adopt other forms, rather than being limited to the forms already mentioned in the above embodiments, as long as they can achieve the function of re-supplying power to the mobile device in the case of forced power-off of the mobile device and can also protect the internal components of the mobile device.

[0089] The above circuit can be applied to mobile devices or similar devices such as laptop computers, tablet computers, or mobile phones.

[0090] In the description of this specification, the descriptions referring to terms such as "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials, or features described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0091] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope described in this specification.

[0092] The above-described embodiments only represent several implementation manners of this application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several deformations and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application should be subject to the appended claims.

Claims

1. A power-on control circuit, characterized in that: Applied to a mobile device, the mobile device comprises a mainboard and a battery, and the power-on control circuit comprises: A mainboard connection module connected to an input terminal of the mainboard; A battery connection module connected to the output end of the battery; A connection control circuit is connected to the mainboard connection module and the battery connection module, and is used to disconnect the connection between the mainboard connection module and the battery connection module when the mainboard is in sleep mode, and then connect the connection between the mainboard connection module and the battery connection module to enable the battery to power on the mainboard again.

2. The power-on control circuit according to claim 1, characterized in that: The connection control circuit comprises: The switch module is used to output a power-on trigger signal when it is closed; A first connection control module, connected to the first end of the switch module, and configured to output a conduction control signal when receiving the power-on trigger signal; A second connection control module is connected to the second end of the switch module, the first connection control module, the mainboard connection module and the battery connection module, and is used to conduct the connection between the mainboard connection module and the battery connection module when receiving the conduction control signal.

3. The power-on control circuit according to claim 2, characterized in that: The first connection control module includes: a first switch element, wherein a first end of the first switch element is connected to a first end of the switch module, a second end of the first switch element is grounded, and is configured to conduct and output a first control signal when receiving the power-on trigger signal; a first voltage-dividing resistor, wherein one end of the first voltage-dividing resistor is connected to the first end of the first switch element, and the other end of the first voltage-dividing resistor is connected to the second end of the switch module; a second switch element, wherein a first end of the second switch element is connected to a third end of the first switch element, a second end of the second switch element is grounded, and a third end of the second switch element is connected to the second connection control module, and is configured to conduct and output the conduction control signal when receiving the first control signal; A protection resistor, one end of which is connected to the third end of the second switch element, and the other end of which is connected to the first end of the second switch element.

4. The power-on control circuit according to claim 3, characterized in that: The first switch element and the second switch element include any one of the following: an NPN transistor and an NMOS transistor.

5. The power-on control circuit according to claim 2, characterized in that: The second connection control module includes: a third switch element, wherein a first end of the third switch element is connected to the first connection unit and a second end of the switch module, a second end of the third switch element is connected to the mainboard connection module, and a third end of the third switch element is connected to the battery connection module, and is configured to be turned on when receiving the conduction control signal, so that the mainboard connection module is connected to the battery connection module; a current limiting resistor, one end of which is connected to the first end of the third switch element, and the other end of which is connected to the second end of the third switch element; a first capacitor, one end of the first capacitor being connected to the first end of the third switch element, and the other end of the first capacitor being grounded; A second voltage-dividing resistor, one end of the second voltage-dividing resistor is connected to the first end of the third switch element, and the other end of the second voltage-dividing resistor is grounded.

6. The power-on control circuit according to claim 5, characterized in that: The third switch element includes any one of the following: a PNP transistor and a PMOS transistor.

7. The power-on control circuit according to claim 2, characterized in that: The switch module is also used to stop outputting the power-on trigger signal when it is disconnected; The first connection control module is further configured to output a disconnection control signal when the power-on trigger signal is not received; The second connection control module is further configured to be cut off upon receiving the disconnection control signal, so as to disconnect the mainboard connection module from the battery connection module.

8. The power-on control circuit according to claim 7, characterized in that: When the mainboard is in sleep mode, the switch module is disconnected to disconnect the mainboard connection module from the battery connection module. When the mainboard connection module and the battery connection module are completely disconnected, the switch module is closed to reconnect the mainboard connection module and the battery connection module so that the battery can power on the mainboard again.

9. The power-on control circuit according to claim 1, characterized in that: Also includes: The display module is connected to the battery connection module and the mainboard connection module, and is used for outputting a display signal when the mainboard connection module is connected to the battery connection module.

10. A mobile device, characterized in that: include: Mainboard; and Battery; and A power-on control circuit as claimed in any one of claims 1 to 9.

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