Charging control circuit and detachable mobile display device

Abstract

The utility model discloses a charging control circuit and detachable mobile display equipment, the charging control circuit is applied to the detachable mobile display equipment, and a host unit and a base unit in the detachable mobile display equipment are detachably connected. A first pole of the first switch module is electrically connected with a base battery in the base unit, and a second pole of the first switch module is electrically connected with a host battery in the host unit; the connection detection module is connected between the host unit and the base unit and comprises a signal output end, and the signal output end is electrically connected with a third pole of the first switch module; when the host unit is connected with the base unit, the connection detection module transmits a first level signal to the third pole of the first switch module through the signal output end, so that the first pole and the second pole of the first switch module are conducted, and the base battery charges the host battery. The endurance of the mobile display device can be improved, the use scene is expanded, and the user experience is improved.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of mobile display device technology, and in particular to a charging control circuit and a detachable mobile display device. Background Technology

[0002] With the development of science and technology, mobile display devices are attracting increasing attention. Mobile display devices typically consist of a movable base unit and a main unit detachably connected to the base unit, with the display module mounted on the main unit. Therefore, when a user views the content displayed on the main unit, the main unit can be fixed to the base unit, or it can be detached from the base unit.

[0003] In related technologies, due to the limited space of the host unit, the battery capacity on the host unit is small and the battery life is poor. When the mobile display device is not plugged in, it is often affected by insufficient power, which makes users need to pay attention to the power status of the mobile display device at all times to ensure the use needs in different scenarios. As a result, the poor battery life limits the usage scenarios and reduces the user experience. Utility Model Content

[0004] This application provides a charging control circuit and a detachable mobile display device, which can improve the battery life of the mobile display device, expand its usage scenarios, and enhance the user experience.

[0005] In a first aspect, embodiments of this application provide a charging control circuit applied to a detachable mobile display device. The detachable mobile display device includes a host unit and a base unit, which are detachably connected. The charging control circuit includes: a first switch module, a first terminal of which is electrically connected to a base battery in the base unit, and a second terminal of which is electrically connected to a host battery in the host unit; and a connection detection module, which is connected between the host unit and the base unit, and includes a signal output terminal electrically connected to a third terminal of the first switch module. When the host unit is connected to the base unit, the connection detection module transmits a first-level signal to the third terminal of the first switch module through the signal output terminal, thereby connecting the first and second terminals of the first switch module, and the base battery charges the host battery.

[0006] According to some embodiments of this application, the first switching module is an N-channel field-effect transistor, the source of the first switching module is electrically connected to the base battery in the base unit, the drain of the first switching module is electrically connected to the host battery in the host unit, and the gate of the first switching module is electrically connected to the signal output terminal.

[0007] According to some embodiments of this application, it further includes a host battery power detection module and a control module. The control module is provided with a first input pin, a second input pin, and an output pin. The first input pin is electrically connected to the signal output terminal, and the output pin is electrically connected to the third pole of the first switch module. The host battery power detection module is electrically connected to the host battery to obtain the power level of the host battery. The host battery power detection module is also electrically connected to the second input pin to transmit a second-level signal to the second input pin when the power level of the host battery is less than a first power threshold. When the host unit is connected to the base unit, the connection detection module transmits a third-level signal to the first input pin through the signal output terminal. When the output pin receives the third-level signal at the first input pin and the second input pin receives the second-level signal, it outputs the first-level signal to the third pole of the first switch module.

[0008] According to some embodiments of this application, a base battery power detection module is also included, and the control module is further provided with a third input pin; wherein, the base battery power detection module is electrically connected to the base battery to obtain the power of the base battery, and the base battery power detection module is also electrically connected to the third input pin to transmit a third level signal to the third input pin when the power of the base battery is greater than a second power threshold; the output pin outputs the first level signal to the third pole of the first switching module when the first input pin receives the third level signal, the second input pin receives the second level signal, and the third input pin receives the fourth high level signal.

[0009] According to some embodiments of this application, the battery capacity of the base battery is greater than the battery capacity of the main battery.

[0010] According to some embodiments of this application, a rectifier module is also included, which is electrically connected to a power source and also electrically connected to the base battery. When the rectifier module is connected to the power source, it rectifies the electrical signal from the power source and transmits it to the base battery for charging.

[0011] According to some embodiments of this application, the rectifier module is also electrically connected to the host battery. When the rectifier module is connected to a power source, it rectifies the electrical signal from the power source and transmits it to the host battery for charging.

[0012] According to some embodiments of this application, it further includes a second switch module, a third switch module, and a control switch module; wherein, the host battery is electrically connected to the display module in the host unit through the second switch module, the base battery is electrically connected to the display module through the third switch module, the control switch module is located on the host unit and electrically connected to the connection detection module, the connection detection module is used to generate a fifth level signal to the control switch module when the host unit is connected to the base unit, and the connection detection module is also used to generate a sixth level signal to the control switch module when the host unit is disconnected from the base unit; when the control switch module receives the fifth level signal, it controls the second switch module to disconnect and the third switch module to turn on; when the control switch module receives the sixth level signal, it controls the second switch module to turn on and the third switch module to disconnect.

[0013] According to some embodiments of this application, the second switching module is an N-channel field-effect transistor, the gate of the second switching module is electrically connected to the control switch, the source of the second switching module is electrically connected to the host battery, and the drain of the second switching module is electrically connected to the display module; the third switching module is an N-channel field-effect transistor, the gate of the third switching module is electrically connected to the control switch module, the source of the third switching module is electrically connected to the base battery, and the drain of the third switching module is electrically connected to the display module.

[0014] The embodiments of this application include at least the following beneficial effects: The charging control circuit in the embodiments of this application is applied to a detachable mobile display device. The detachable mobile display device includes a host unit and a base unit, which are detachably connected. The charging control circuit includes: a first switch module, the first terminal of which is electrically connected to the base battery in the base unit, and the second terminal of which is electrically connected to the host battery in the host unit; and a connection detection module, which is connected between the host unit and the base unit, and includes a signal output terminal electrically connected to the third terminal of the first switch module. When the host unit and the base unit are connected, the connection detection module transmits a first-level signal to the third terminal of the first switch module through the signal output terminal, thereby connecting the first and second terminals of the first switch module, allowing the base battery to be electrically connected to the host battery, so that the base battery can charge the host battery. Therefore, by setting batteries on the host unit and the base unit respectively, and charging the host battery through the base battery when the host unit and the base unit are connected, the embodiments of this application can effectively increase the power of the host battery, ultimately improving the battery life of the mobile display device, expanding usage scenarios, and improving the user experience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a detachable mobile display device provided in an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of a charging control circuit provided in an embodiment of this application;

[0017] Figure 3 This is a schematic diagram showing the positional relationship of the connection detection modules provided in the embodiments of this application;

[0018] Figure 4 This is a schematic diagram of the connection detection module provided in an embodiment of this application;

[0019] Figure 5 This is a schematic diagram of another connection detection module provided in an embodiment of this application;

[0020] Figure 6 This is a schematic diagram of a charging control circuit provided in an embodiment of this application;

[0021] Figure 7 This is a schematic diagram of another charging control circuit provided in an embodiment of this application.

[0022] Figure label:

[0023] Main unit 100, main battery 110, display module 120, main battery power detection module 130, second switch module 140, third switch module 150, control switch module 160;

[0024] Base unit 200, base battery 210, base battery power detection module 220;

[0025] Bracket 300;

[0026] Connect the detection module 400, connector 410, detection probe 420, magnet 430, and magnetic sensor 440;

[0027] First switch module 500;

[0028] Control module 600;

[0029] 700 rectifier module. Detailed Implementation

[0030] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] It should be understood that in the description of the embodiments of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of the embodiments of this application, unless otherwise expressly limited, terms such as setting, installing, and connecting should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this application in combination with the specific content of the technical solution.

[0033] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Reference Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a detachable mobile display device provided in an embodiment of this application. Figure 1 The detachable mobile display device includes: a main unit 100, a main battery 110, a base unit 200, and a base battery 210.

[0035] The main unit 100 can be detachably connected to the base unit 200. Furthermore, the base unit 200 is equipped with a bracket 300, which connects to the main unit 100, forming an integrated mobile display device that can move freely. The bracket 300 can also adjust the main unit 100 to a suitable position. The bracket 300 can be integrally formed with the base unit 200 or be detachably connected. Additionally, the bracket 300 can be telescopic, allowing for quick adjustment of the distance between the main unit 100 and the base unit 200 according to actual usage needs.

[0036] In this embodiment, the host unit 100 has a built-in host battery 110, and the base unit 200 has a built-in base battery 210. The host battery 110 can power the various electronic components in the host unit 100 to realize the function of a mobile display device. A connection detection module 400 is provided between the host unit 100 and the base unit 200. In addition, the host unit 100 may also be provided with a display module 120 and other electronic components. The display module 120 is the core component for realizing the display function. The display module 120 is a component that integrates display technology and electronic driving technology, used to convert electronic signals or data into visible images or information. Further, the display module 120 can be a display screen. The type of display screen can be various, including but not limited to liquid crystal display screen (LCD), light-emitting diode display screen (LED, including OLED, QLED, etc.), micro LED display screen (MicroLED), or electronic paper, etc. This application embodiment does not make specific limitations.

[0037] Reference Figure 2 As shown, Figure 2This is a schematic diagram of a charging control circuit provided in an embodiment of this application. This application provides a charging control circuit that can be applied to detachable mobile display devices. The charging control circuit includes a first switch module 500 and a connection detection module 400.

[0038] The first switch module 500 is used to control the charging state of the base battery 210 to the main battery 110. The first switch module 500 has three terminals: a first terminal, a second terminal, and a third terminal. The third terminal controls the conduction between the first and second terminals; for example, when the third terminal is high, the first and second terminals are connected, and when the third terminal is low, the first and second terminals are disconnected. Furthermore, the first terminal of the first switch module 500 is electrically connected to the base battery 210 in the base unit 200, and the second terminal of the first switch module 500 is electrically connected to the main battery 110 in the main unit 100.

[0039] The connection detection module 400 is used to detect the connection between the main unit 100 and the base unit 200. For example... Figure 3 As shown, Figure 3 This is a schematic diagram of the positional relationship of the connection detection modules provided in the embodiments of this application. The connection detection module 400 is connected between the host unit 100 and the base unit 200. The connection detection module 400 includes a signal output terminal, which is electrically connected to the third pole of the first switch module 500.

[0040] In this embodiment, when the host unit 100 is detached from the base unit 200, the connection detection module 400 transmits a low-level signal to the third pole of the first switch module 500 through the signal output terminal, and the first pole and the second pole of the first switch module 500 are cut off. At this time, the host unit 100 is detached from the base unit 200 and therefore cannot be charged by the base battery 210.

[0041] In this embodiment, when the host unit 100 is connected to the base unit 200, the connection detection module 400 transmits a first-level signal to the third terminal of the first switch module 500 through its signal output terminal, so that the first and second terminals of the first switch module 500 are connected. The first-level signal can be at least one of a high-level signal, a low-level signal, a signal with level, and a signal without level. In this embodiment, a high-level signal is used as an example. The high-level first-level signal can also be called a high-level arrival detection signal, indicating that the host unit 100 has been connected to the base unit 200. At this time, the host unit 100 is connected to the base unit 200 for use. In order to improve the battery capacity of the host battery 110 and the battery life of the device after the host unit 100 is removed at any time, and to meet the usage needs of more scenarios, this embodiment controls the base battery 210 to charge the host battery 110. Therefore, this embodiment of the application provides batteries on the host unit 100 and the base unit 200 respectively, and charges the host battery 110 through the base battery 210 when the host unit 100 is connected to the base unit 200. This effectively increases the power of the host battery 110, thereby improving the battery life of the mobile display device, expanding the usage scenarios, and improving the user experience.

[0042] In one embodiment, the connection detection module 400 performs connection detection using a detection probe. (Refer to...) Figure 4 As shown, Figure 4 This is a schematic diagram of the connection detection module provided in an embodiment of this application. Taking the connection between the host unit 100 and the bracket 300 on the base unit 200 as an example, the connection detection module 400 includes a connector 410 located on the host unit 100 and a detection pin 420 located on the bracket 300. When the host unit 100 is correctly installed on the bracket 300, the connector 410 and the detection pin 420 make physical contact. This contact completes a circuit, allowing current to flow from the connector 410 to the detection pin 420, thereby generating a low-level position detection signal, indicating that the host unit 100 has been successfully connected to the bracket 300.

[0043] In one embodiment, the connection detection module 400 also performs connection detection via magnetic induction. (See also...) Figure 5 As shown, Figure 5This is a schematic diagram of another connection detection module provided in this application embodiment. Taking the connection between the host unit 100 and the bracket 300 on the base unit 200 as an example, the connection detection module 400 is an electromagnetic induction structure, mainly using the principle of electromagnetic induction for detection. The host unit 100 includes a magnet 430, which acts as a magnetic field source to interact with a magnetic sensor 440 on the bracket 300. The magnetic sensor 440 is mounted on the bracket 300 and can detect the presence and strength of the magnetic field. When the host unit 100 approaches the bracket 300 and is correctly connected, the distance between the magnet 430 and the magnetic sensor 440 decreases, and the magnetic field strength detected by the sensor 440 increases. The magnetic sensor 440 compares the detected magnetic field strength with a preset field strength, which is pre-set to determine whether the host unit 100 has been correctly connected to the bracket 300. If the magnetic field strength detected by the magnetic sensor 440 is greater than or equal to the preset field strength, this indicates that the host unit 100 has approached or contacted the appropriate position on the bracket 300. At this time, the magnetic sensor 440 determines that the host unit 100 and the bracket 300 are connected and generates a low-level position detection signal.

[0044] It is understandable that if the host unit 100 is not connected to the bracket 300, neither the detection needle nor the magnetic sensor in the connection detection module 400 can obtain the preset signal. At this time, the position detection signal is not grounded and is therefore at a high level.

[0045] It should be noted that the term "electrical connection" in the embodiments of this application, also known as "electrical link," is a description of the connection relationship used to illustrate this characteristic of the circuit when describing the circuit structure of a product. It can be understood as a form of connection between different components in the circuit structure through physical lines that can transmit electrical signals, such as PCB copper foil or wires. It is understood that the two electronic components in an "electrical connection" can be directly connected, or indirectly connected by other electronic components in between.

[0046] Furthermore, referring to Figure 6 As shown, Figure 6This is a schematic diagram of a charging control circuit provided in an embodiment of this application. In this embodiment, the first switching module 500 is an N-channel MOSFET. The source of the first switching module 500 is electrically connected to the base battery 210 in the base unit 200, the drain of the first switching module 500 is electrically connected to the host battery 110 in the host unit 100, and the gate of the first switching module 500 is electrically connected to the signal output terminal. When the first switching module 500 receives a first-level signal, the first switching module 500 is turned on, thereby enabling the base battery 210 to charge the host battery 110. It should be noted that the first-level signal is a high-level signal. When the first switching module 500 is turned on, the magnitude of the high-level signal from the signal output terminal needs to meet the requirements for the N-channel MOSFET to turn on; this will not be elaborated upon in this embodiment.

[0047] It should be noted that the N-channel MOSFET was chosen as the first switch module 500 in this embodiment because it has a lower on-resistance when turned on. Therefore, during charging, the current transfer efficiency from the base battery 210 to the main battery 110 is higher, reducing energy loss and improving charging efficiency. Besides this, the first switch module 500 can also be other types of switch modules. For example, the first switch module 500 can also be a P-channel MOSFET, a PNP transistor, or an NPN transistor. Taking an NPN transistor as an example, the base of the NPN transistor can be electrically connected to the signal output terminal, thereby turning on the first switch module 500 when a high-level signal is received. This embodiment does not specifically limit the use of other types of switching conduits for the first switch module 500.

[0048] Furthermore, referring to Figure 6 As shown, the charging control circuit in this embodiment further includes a host battery power detection module 130 and a control module 600. The main function of the host battery power detection module 130 is to monitor the current power level of the host battery 110 in real time, which can be achieved by measuring the voltage, current, or other power-related parameters of the host battery 110. The control module 600 is the core component of the charging control circuit. It is responsible for receiving signals from the detection module 400 and the host battery power detection module 130. The control module 600 has multiple input pins for receiving these signals and processing them through internal logic circuits. Specifically, the control module 600 is provided with a first input pin (pin1), a second input pin (pin2), and an output pin (out1).

[0049] Specifically, the first input pin is electrically connected to the signal output terminal of the connection detection module 400, the output pin is electrically connected to the third electrode (gate) of the first switch module 500, the host battery power detection module 130 is electrically connected to the host battery 110 to obtain the power level of the host battery 110, and the host battery power detection module 130 is also electrically connected to the second input pin to transmit a second level signal to the second input pin when the power level of the host battery 110 is less than a first power threshold. The second level signal can be at least one of a high level signal, a low level signal, a signal with level, and a signal without level. In this embodiment, a high level signal is used as an example for explanation.

[0050] The first power threshold is a preset threshold set in this embodiment to indicate the power level of the host battery 110 when charging control is triggered. It should be noted that in this embodiment, the electronic components (such as resistors and capacitors) in the host battery power detection module 130 can be set based on the predefined first power threshold so that when the power level of the host battery 110 is detected to be lower than the first power threshold, the level transmitted to the second input pin by the host unit 100 detection module is high, and the input requirements of the control module 600 are met. This embodiment does not impose specific limitations on this.

[0051] When the host unit 100 is connected to the base unit 200, the connection detection module 400 first transmits a third-level signal to the first input pin through the signal output terminal. The third-level signal can be at least one of a high-level signal, a low-level signal, a signal with level, and a signal without level. In this embodiment, a high-level signal is used as an example for explanation. If the first input pin receives the third-level signal and the second input pin receives the second-level signal, it means that the host unit 100 has been connected to the base unit 200, and the power of the host battery 110 is below a certain level, so it needs to be charged. Therefore, the control module 600 outputs a first-level signal to the third terminal of the first switch module 500 through the output pin, so that the first switch module 500 is turned on, that is, the first terminal and the second terminal of the first switch module 500 are connected, so that the base battery 210 charges the host battery 110.

[0052] For example, the host battery power detection module 130 can be configured in various ways. For instance, the power level of the host battery 110 can be estimated by detecting the voltage across its terminals; alternatively, a current-sensing resistor can be connected in series with the positive or negative terminal of the host battery 110, and the power level can be determined by measuring and integrating the current flowing through the battery, thereby confirming the power level of the host battery 110. During the integration process, a power amplifier module can be used to amplify the circuit signal; alternatively, a data table can be established based on the discharge curve of the host battery 110, and the corresponding power level can be found by measuring the voltage of the host battery 110. Therefore, the specific configuration of the host battery power detection module 130 in this embodiment is not specifically limited.

[0053] For example, there are multiple options for the control module 600. The appropriate processor can be selected based on the data processing capability required by the embodiments of this application and the number of pins required. The control module 600 can be any processor that meets the requirements of the embodiments of this application, such as a low-power microcontroller, a low-power microcontroller (MCU), or an embedded processor (EMPU) as the control module in the above embodiments. These control modules have a small size, low power consumption, and sufficient processing capability to meet the requirements of the charging control circuit.

[0054] Furthermore, referring to Figure 6 As shown, the charging control circuit in this embodiment also includes a base battery power detection module 220. The main function of the base battery power detection module 220 is to monitor the current power level of the base battery 210 in real time, which can be achieved by measuring the voltage, current, or other power-related parameters of the base battery 210. In addition, the control module 600 is also provided with a third input pin (pi n3).

[0055] Specifically, the base battery power detection module 220 is electrically connected to the base battery 210 to obtain the power level of the base battery 210. The base battery power detection module 220 is also electrically connected to a third input pin to transmit a fourth level signal to the third input pin when the power level of the base battery 210 is greater than a second power threshold. The fourth level signal can be at least one of a high level signal, a low level signal, a signal with level, and a signal without level. In this embodiment, a high level signal is used as an example for illustration.

[0056] The second power threshold is a preset threshold set in this embodiment to indicate the power level of the base battery 210 when charging control is triggered. It should be noted that in this embodiment, the electronic components (such as resistors and capacitors) in the base battery power detection module 220 can be set based on the predefined second power threshold so that when the detected power level of the base battery 210 is greater than the first power threshold, the level transmitted to the third input pin by the detection module of the base unit 200 is high, and the input requirements of the control module 600 are met. This embodiment does not impose specific limitations on this.

[0057] When the host unit 100 is connected to the base unit 200, the connection detection module 400 transmits a fourth level signal to the first input pin through the signal output terminal. If the first input pin receives a third level signal, the second input pin receives a second level signal, and the third input pin receives a fourth level signal, it means that the host unit 100 has been connected to the base unit 200, and the power of the host battery 110 is below a certain level while the power of the base battery 210 is above a certain level. Therefore, the base battery 210 can charge the host battery 110. Thus, the control module 600 outputs a first level signal to the third terminal of the first switch module 500 through the output pin, so that the first switch module 500 is turned on, that is, the first and second terminals of the first switch module 500 are connected, allowing the base battery 210 to charge the host battery 110.

[0058] For example, with the first level signal, the second level signal, the third level signal, and the fourth level signal all being high level signals, when the first input pin, the second input pin, and the third input pin all input high level signals, the control module 600 outputs a high level signal to the third pole of the first switch module 500 through the output pin, thereby turning on the first switch module 500.

[0059] Similarly, there are multiple ways to configure the base battery power detection module 220. For example, the power level of the base battery 210 can be estimated by detecting the voltage across its terminals; alternatively, a current-sensing resistor can be connected in series with the positive or negative terminal of the base battery 210, and the power level can be determined by measuring and integrating the current flowing through the battery, thereby confirming the power level of the base battery 210. During the integration process, a power amplifier module can be used to amplify the circuit signal; alternatively, a data table can be established based on the discharge curve of the base battery 210, and the corresponding power level can be found by measuring the voltage of the base battery 210. Therefore, the specific configuration of the base battery power detection module 220 in this embodiment is not specifically limited.

[0060] Furthermore, in this embodiment, the battery capacity of the base battery 210 is greater than that of the main battery 110. Considering device size and weight, the main battery 110 is designed with a smaller capacity, less than that of the base battery 210. Since the base battery 210 is located within the base unit 200, it has more installation space, allowing for a larger base battery 210 to improve the battery life of the mobile display device and ensure sufficient power for the main battery 110. For example, the main battery 110 uses polymer soft-pack cells with a capacity of less than 100Wh, supporting a thinner display unit and serving as a backup power source. The base battery 210 uses a multi-series / multi-parallel combination of cylindrical 21700 / 18650 cells, with a maximum energy exceeding 200Wh. The above is merely an illustrative example of the battery size comparison in this embodiment and does not constitute a limitation on the embodiments of this application.

[0061] Furthermore, referring to Figure 6 As shown, the charging control circuit in this embodiment further includes a rectifier module 700, which is electrically connected to a power source. Specifically, the input terminal of the rectifier module 700 is designed with a power interface for connecting to an external power source (such as a household socket, car charger, etc.). The rectifier module 700 is also electrically connected to the base battery 210. When the rectifier module 700 is connected to a power source, it rectifies the electrical signal from the power source and transmits it to the base battery 210 for charging. In this way, the base battery 210 can be recharged when the mobile display device is plugged in, thereby improving the battery life of the mobile display device.

[0062] For example, the rectifier module 700 may include multiple electronic components to process electrical signals from an external power source and charge the base battery 210. For instance, the rectifier module 700 may include rectifier elements, such as a rectifier circuit composed of a diode rectifier bridge or a field-effect transistor, capable of converting both the positive and negative half-cycles of the alternating current into unidirectional pulsating direct current. Following the rectifier elements is a filter circuit, which may consist of capacitors and inductors, used to smooth the pulsating direct current after rectification, reduce voltage fluctuations, and make the output closer to ideal direct current. Furthermore, the rectifier module 700 may also include a voltage regulation circuit, such as a linear regulator or a switching regulator, capable of adjusting the output voltage amplitude according to the actual needs of the base battery 210, ensuring that the battery is charged within a safe voltage range. In addition, the rectifier module 700 may also include other electronic components to achieve more functions during charging; this embodiment does not impose specific limitations on these aspects.

[0063] Furthermore, referring to Figure 6As shown, the rectifier module 700 in this embodiment is also electrically connected to the host battery 110. When the rectifier module 700 is connected to the power supply, it rectifies the electrical signal from the power supply and transmits it to the host battery 110 for charging. In this way, the host battery 110 can also be recharged when the mobile display device is plugged in, thereby improving the battery life of the mobile display device.

[0064] Furthermore, referring to Figure 7 As shown, Figure 7 This is a schematic diagram of another charging control circuit provided in an embodiment of this application. The charging control circuit in this embodiment also includes a second switch module 140, a third switch module 150, and a control switch module 160. The second switch module 140 and the third switch module 150 are switch modules used to control the base battery 210 or the main battery 110 to supply power to the display module 120 in the main unit 100. Similar to the first switch module 500, both the second switch module 140 and the third switch module 150 are provided with three poles, including a first pole, a second pole, and a third pole. The third pole is used to control the conduction between the first pole and the second pole. For example, when the third pole is high, the first pole and the second pole are connected; when the third pole is low, the first pole and the second pole are disconnected.

[0065] Specifically, the main unit battery 110 is electrically connected to the display module 120 in the main unit 100 via the second switch module 140, and the base battery 210 is electrically connected to the display module 120 via the third switch module 150. The connection detection module 400 generates a fifth-level signal to the control switch module 160 when the main unit 100 and the base unit 200 are connected, and generates a sixth-level signal to the control switch module 160 when the main unit 100 and the base unit 200 are disconnected. The fifth-level signal can be at least one of a high-level signal, a low-level signal, a signal with a level, and a signal without a level. In this embodiment, a low-level position detection signal is used as an example. Similarly, the sixth-level signal can be at least one of a high-level signal, a low-level signal, a signal with a level, and a signal without a level. In this embodiment, a high-level position detection signal is used as an example.

[0066] The control switch module 160 is located on the host unit 100 and electrically connected to the connection detection module 400, used to receive position detection signals. When the control switch module 160 receives the fifth level signal, that is, when it receives the low-level position detection signal, it controls the second switch module 140 to turn off and the third switch module 150 to turn on. At this time, the host unit 100 is connected to the base unit 200, so the base battery 210 can power the various electronic components in the host unit 100, such as the display module 120. When the control switch module 160 receives the sixth level signal, that is, when it receives the high-level position detection signal, it controls the second switch module 140 to turn on and the third switch module 150 to turn off. At this time, the host unit 100 is detached from the base unit 200, so the host battery 110 can power the various electronic components in the host unit 100, such as the display module 120, thereby meeting the power supply needs of the mobile display device in different scenarios.

[0067] For example, the control switch module 160 can be a processor that can select which output pin is a high-level signal based on the level state of the input position detection signal, thereby controlling the conduction of the second switch module 140 or the third switch module 150.

[0068] Furthermore, referring to Figure 7 As shown, in this embodiment, the second switch module 140 is an N-channel MOSFET. The gate of the second switch module 140 is electrically connected to the control switch module 160, the source of the second switch module 140 is electrically connected to the host battery 110, and the drain of the second switch module 140 is electrically connected to the display module 120. When the control switch module 160 receives a low-level position detection signal, it outputs a high-level signal to the second switch module 140 to turn it on. The host battery 110 can then power the electronic components in the host unit 100, such as the display module 120. It should be noted that when the second switch module 140 is turned on, the magnitude of the high-level signal output from the control switch module 160 must be sufficient to turn on the N-channel MOSFET. This will not be elaborated further in this embodiment.

[0069] Similarly, the third switch module 150 is an N-channel MOSFET. The gate of the third switch module 150 is electrically connected to the control switch module 160, the source of the third switch module 150 is electrically connected to the base battery 210, and the drain of the third switch module 150 is electrically connected to the display module 120. When the control switch module 160 receives a high-level position detection signal, it outputs a high-level signal to the third switch module 150 to turn it on. The base battery 210 can then power the electronic components in the host unit 100, such as the display module 120. It should be noted that when the third switch module 150 is turned on, the magnitude of the high-level signal output from the control switch module 160 must be sufficient to turn on the N-channel MOSFET. This will not be elaborated further in this embodiment.

[0070] In addition, the second switch module 140 and the third switch module 150 can be other types of switch modules, similar to the first switch module 500 in the above embodiment, and will not be described in detail here.

[0071] It should also be understood that the various implementation methods provided in this application can be combined arbitrarily to achieve different technical effects.

[0072] The above provides a detailed description of the preferred embodiments of this application. However, this application is not limited to the above-described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A charging control circuit, characterized in that, The invention pertains to a detachable mobile display device, which includes a main unit and a base unit, the main unit and the base unit being detachably connected. The charging control circuit includes: A first switch module, wherein the first pole of the first switch module is electrically connected to the base battery in the base unit, and the second pole of the first switch module is electrically connected to the host battery in the host unit; A connection detection module is connected between the host unit and the base unit. The connection detection module includes a signal output terminal, which is electrically connected to the third pole of the first switch module. When the host unit is connected to the base unit, the connection detection module transmits a first level signal to the third pole of the first switch module through the signal output terminal, so that the first pole and the second pole of the first switch module are connected, and the base battery charges the host battery.

2. The charging control circuit according to claim 1, characterized in that, The first switching module is an N-channel field-effect transistor. The source of the first switching module is electrically connected to the base battery in the base unit, the drain of the first switching module is electrically connected to the host battery in the host unit, and the gate of the first switching module is electrically connected to the signal output terminal.

3. The charging control circuit according to claim 1, characterized in that, It also includes a host battery power detection module and a control module, wherein the control module is provided with a first input pin, a second input pin and an output pin; Wherein, the first input pin is electrically connected to the signal output terminal, the output pin is electrically connected to the third pole of the first switch module, the host battery power detection module is electrically connected to the host battery to obtain the power of the host battery, and the host battery power detection module is also electrically connected to the second input pin to transmit a second level signal to the second input pin when the power of the host battery is less than a first power threshold. When the host unit is connected to the base unit, the connection detection module transmits a third-level signal to the first input pin through the signal output terminal; when the first input pin receives the third-level signal and the second input pin receives the second-level signal, the output pin outputs the first-level signal to the third pole of the first switch module.

4. The charging control circuit according to claim 3, characterized in that, It also includes a base battery power detection module, and the control module is further provided with a third input pin; The base battery power detection module is electrically connected to the base battery to obtain the power of the base battery. The base battery power detection module is also electrically connected to the third input pin to transmit a fourth level signal to the third input pin when the power of the base battery is greater than the second power threshold. When the first input pin receives the third level signal, the second input pin receives the second level signal, and the third input pin receives the fourth level signal, the output pin outputs the first level signal to the third pole of the first switching module.

5. The charging control circuit according to any one of claims 1 to 4, characterized in that, The battery capacity of the base battery is greater than that of the main battery.

6. The charging control circuit according to claim 1, characterized in that, It also includes a rectifier module, which is electrically connected to a power source and also electrically connected to the base battery. When the rectifier module is connected to the power source, it rectifies the electrical signal from the power source and transmits it to the base battery for charging.

7. The charging control circuit according to claim 6, characterized in that, The rectifier module is also electrically connected to the host battery. When the rectifier module is connected to a power source, it rectifies the electrical signal from the power source and transmits it to the host battery for charging.

8. The charging control circuit according to claim 1, characterized in that, It also includes a second switch module, a third switch module, and a control switch module; The main unit battery is electrically connected to the display module in the main unit via the second switch module, the base battery is electrically connected to the display module via the third switch module, the control switch module is located on the main unit and is electrically connected to the connection detection module, the connection detection module is used to generate a fifth level signal to the control switch module when the main unit is connected to the base unit, and the connection detection module is also used to generate a sixth level signal to the control switch module when the main unit is disconnected from the base unit; When the control switch module receives the fifth level signal, it controls the second switch module to turn off and the third switch module to turn on; when the control switch module receives the sixth level signal, it controls the second switch module to turn on and the third switch module to turn off.

9. The charging control circuit according to claim 8, characterized in that, The second switching module is an N-channel field-effect transistor. The gate of the second switching module is electrically connected to the control switch, the source of the second switching module is electrically connected to the host battery, and the drain of the second switching module is electrically connected to the display module. The third switching module is an N-channel field-effect transistor. The gate of the third switching module is electrically connected to the control switching module, the source of the third switching module is electrically connected to the base battery, and the drain of the third switching module is electrically connected to the display module.

10. A detachable mobile display device, characterized in that, Includes the charging control circuit according to any one of claims 1 to 9.

Images