Charging control circuit, electronic device, and vehicle

Abstract

The application discloses a charging control circuit, an electronic device and a vehicle, and is applied to the technical field of charging control. The charging control circuit comprises a first charging module and a second charging module. The first charging module comprises a first detection circuit and a first charging circuit. The first detection circuit comprises a contact interface. Two ends of the first charging circuit are connected with the contact interface and a battery respectively. The second charging module comprises a second detection circuit and a second charging circuit. The second detection circuit comprises a USB interface. Two ends of the second charging circuit are connected with the USB interface and the battery respectively. The structure of the USB interface is different from that of the contact interface. In this way, the battery can be charged through the low-cost contact interface, the USB interface is liberated, the function of the second charging module can be independently and normally used, the multi-functional use demand of a user is met, and the intelligent cabin use experience of the vehicle is improved.

Description

Technical Field

[0001] This application belongs to the field of charging control technology, and in particular relates to a charging control circuit, electronic equipment and vehicle. Background Technology

[0002] With the rapid development and popularization of intelligent technology in the automotive industry, users' demand for extending their daily entertainment or work activities inside vehicles is increasing. To ensure the user's interactive experience and comfort with terminal devices, it is necessary to ensure the portability of charging for these devices, so that they can be charged when not in use and used continuously as soon as they are picked up.

[0003] Traditional methods of charging terminal devices using data cables require occupying the terminal device's multi-functional interface (such as a communication serial bus interface, i.e., a USB interface), causing other functions of that multi-functional interface (such as connecting headphones, USB flash drives, etc.) to malfunction, thereby reducing the user experience in the vehicle's smart cockpit. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a charging control circuit, electronic device, and vehicle that can charge the battery through a low-cost contact interface, freeing up the USB interface, ensuring the independent and normal operation of the second charging module, meeting the user's multi-functional needs, and thereby improving the intelligent cockpit user experience of the vehicle.

[0005] In a first aspect, this application provides a charging control circuit, the charging control circuit comprising: The first charging module includes a first detection circuit and a first charging circuit. The first detection circuit includes a contact interface, and the two ends of the first charging circuit are respectively connected to the contact interface and the battery. The second charging module includes a second detection circuit and a second charging circuit. The second detection circuit includes a USB interface. The two ends of the second charging circuit are respectively connected to the USB interface and the battery. The structure of the USB interface is different from that of the contact interface.

[0006] In some embodiments, the contact interface includes at least one of a spring pin interface, a spring-loaded electrical connection interface, and a magnetic contact interface.

[0007] In some embodiments, the contact interface is configured to connect to a first external device, and the contact interface includes a charging detection sub-interface and a power transmission sub-interface. The charging detection sub-interface is configured to detect whether it is connected to the first external device. The power transmission sub-interface is connected to the first charging circuit, and the power transmission sub-interface is used to transmit power.

[0008] In some embodiments, the charging detection sub-interface is further configured to detect whether the first external device has power supply capability when the first external device is connected. The power transmission sub-interface is configured to transmit the power output by the first external device to the first charging circuit when the first external device is connected to the contact interface and the first external device has power supply capability.

[0009] In some embodiments, the first charging circuit includes a first charging management module and a first buck-boost module, wherein the first buck-boost module is connected to the power transmission sub-interface and the battery, respectively. The first charging management module is configured to control the first buck-boost module to enter the working state when the first external device is connected to the contact interface and the first external device has power supply capability. The first buck-boost module is configured to, when in the operating state, convert the voltage connected to the power transmission sub-interface into a charging voltage adapted to the battery.

[0010] In some embodiments, the charging control circuit further includes a power management module, which is connected to the first charging module and the battery respectively; The first charging management module is configured to detect the remaining power of the battery, and when the remaining power is less than a first preset power threshold and the contact interface is connected to the first external device, control the first buck-boost module to charge the battery and supply power to the power management module.

[0011] In some embodiments, the power management module is configured to acquire the remaining power of the battery, and control the battery to supply power to the power management module when the remaining power is greater than a second preset power threshold, wherein the second preset power threshold is greater than or equal to the first preset power threshold. The first charging management module is also configured to stop supplying power to the power management module when the remaining power is greater than or equal to the first preset power threshold.

[0012] In some embodiments, the charging control circuit further includes a power management module, which is connected to the USB interface in the second detection circuit via the second charging circuit. The USB interface is configured to connect a second external device; The power management module is configured to transmit data with the second external device via the USB interface when the second external device is connected via the USB interface.

[0013] In some embodiments, the charging control circuit further includes a power management module, and the second charging circuit includes a second charging management module, the power management module being communicatively connected to the second charging management module; The USB interface is configured to connect a second external device; The second charging management module is configured to, when the second external device is connected to the USB interface, obtain device information of the second external device, the device information including whether the second external device has power supply capability; The power management module is configured to acquire battery status information of the battery, structural information of the second charging module and device information of the second external device, and determine the maximum charging current based on the battery status information, and determine the maximum reverse power supply current based on the battery status information and the structural information of the second charging module. The power management module is further configured to determine the target charging current of the second external device based on the device information and the maximum charging current, when the second external device has power supply capability. The power management module is also configured to determine the target power supply current of the battery based on the device information and the maximum reverse power supply current when the second external device does not have power supply capability.

[0014] In some embodiments, the second charging circuit includes a second charging main circuit and at least one charging sub-circuit, wherein the rated charging power of the second charging main circuit is less than the rated charging power of any of the charging sub-circuits. The second charging management module is configured to control the second charging main circuit or any of the charging sub-circuits to charge based on the target charging current; and to control the second charging main circuit or any of the charging sub-circuits to supply power in reverse based on the target power supply current.

[0015] In some embodiments, the charging sub-circuit includes a charge pump circuit.

[0016] Secondly, this application provides an electronic device, which includes a battery and a charging control circuit as described in any of the above embodiments.

[0017] Thirdly, this application provides a vehicle including a power supply bracket for supporting and limiting the aforementioned electronic equipment.

[0018] In some embodiments, the power supply bracket includes a power supply interface for discharging, the power supply interface being configured to connect to a contact interface of the charging control circuit in the electronic device or the USB interface.

[0019] The charging control circuit, electronic device, and vehicle provided in this application embodiment include a first charging module and a second charging module; both the first and second charging modules can charge the battery. After connecting an external power supply device to the contact interface, the external power supply device charges the battery through the contact interface and the first charging circuit. After connecting an external power supply device to the USB interface, the external power supply device charges the battery through the USB interface and the second charging circuit.

[0020] The contact interface differs in structure from the USB interface and is less expensive, so the functions of the corresponding first and second charging modules are not entirely the same. Thus, when charging the battery via the contact interface, the USB interface can be freed up, ensuring the second charging module can function independently and normally, meeting users' multi-functional needs, reducing production costs, and enhancing the smart cockpit user experience.

[0021] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a first structural schematic diagram of a charging control circuit provided in some embodiments of this application; Figure 2 This is a schematic diagram of the second structure of a charging control circuit provided in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of an electronic device provided in some embodiments of this application; Figure 4 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application.

[0023] Explanation of key figure labels: Charging control circuit 100, first charging module 10, first detection circuit 20, contact interface 21, charging detection sub-interface 22, power transmission sub-interface 23, first charging circuit 30, first charging management module 31, first step-up / step-down module 32. The second charging module 40, the second detection circuit 50, the USB interface 51, the second charging circuit 60, the second charging management module 61, the second charging main circuit 62, and the charging sub-circuit 63. Power management module 70, power management circuit 71, main controller 72; First external device 110, second external device 120, electronic device 200, battery 210; Vehicle 300, power supply bracket 310, power supply interface 311. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be understood that the terms "center," "length," "width," "upper," "lower," "front," and "rear," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and for 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0027] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0028] To facilitate understanding, the background technology of this application will be introduced below: Common types of charging interfaces for terminal devices include Universal Serial Bus Type-C (USB Type-C) and Micro-USB. USB interfaces have a unified interface standard, are compatible across devices, and can simultaneously provide charging and data transfer capabilities. USB interfaces have a mature structure, controllable costs, and offer high charging safety.

[0029] One existing solution uses an adapter (such as a protective case) to convert the original charging port of the terminal device into a pogo pin contact module. This pogo pin module then connects to the pogo pin contacts in the vehicle for data exchange and charging. However, this adapter completely occupies the terminal device's charging port, preventing other electronic devices (such as headphones or USB drives) from connecting and fulfilling their usage requirements.

[0030] In summary, the solution of using adapters to charge terminal devices has obvious limitations. It will completely occupy the multi-functional USB interface, affecting the connection and use of other peripherals and reducing the user experience in the vehicle's smart cockpit.

[0031] In view of the problems existing in the background art, this application provides a charging control circuit, please refer to... Figure 1 , Figure 1 This is a first structural schematic diagram of a charging control circuit provided in certain embodiments of this application. The charging control circuit 100 includes a first charging module 10 and a second charging module 40. The charging control circuit 100 will be described in detail below: The first charging module 10 includes a first detection circuit 20 and a first charging circuit 30. The first detection circuit 20 includes a contact interface 21. The two ends of the first charging circuit 30 are connected to the contact interface 21 and the battery 210 respectively to realize the transmission of electrical energy. After the first external device 110 is connected to the contact interface 21, the first external device 110 charges the battery 210 through the contact interface 21 and the first charging circuit 30.

[0032] The contact interface 21 has a compact structure and high dust and water resistance, is not easily worn, and is highly convenient to plug and unplug, avoiding the use of exposed wires to charge the battery 210 and reducing the risk of tangling. Optionally, the contact interface 21 may include, but is not limited to, interfaces that can realize contact connection, such as spring pin interfaces (i.e., pogo pin interfaces), spring-loaded electrical connection interfaces, and magnetic contact interfaces. This application embodiment does not limit this.

[0033] In one alternative embodiment, please refer to Figure 1 and Figure 2 The contact interface 21 is configured to connect to a first external device 110. The contact interface 21 includes a charging detection sub-interface 22 and a power transmission sub-interface 23; the charging detection sub-interface 22 is configured to detect whether it is connected to the first external device 110.

[0034] The power transmission sub-interface 23 is connected to the first charging circuit 30, and the power transmission sub-interface 23 is used to transmit power to the first charging circuit 30.

[0035] For example, the charging detection sub-interface 22 includes a magnetic sensor, which determines that it is connected to the first external device 110 when the magnetic sensor is triggered, and determines that it is not connected to the first external device 110 when the magnetic sensor is not triggered.

[0036] Optionally, the charging detection sub-interface 22 is also configured to detect whether the first external device 110 has power supply capability when the first external device 110 is connected.

[0037] For example, the charging detection sub-interface 22 includes a detection resistor. When the charging detection sub-interface 22 is connected to the first external device 110, the system determines whether the first external device 110 has power supply capability based on whether the voltage division value of the detection resistor is within a preset voltage range. If the voltage division value of the detection resistor is within the preset voltage range, the first external device 110 is determined to have power supply capability; if the voltage division value of the detection resistor is not within the preset voltage range, the first external device 110 is determined not to have power supply capability.

[0038] The power transmission sub-interface 23 is configured to transmit the power output by the first external device 110 to the first charging circuit 30 when the first external device 110 is connected to the contact interface 21 and the first external device 110 has power supply capability.

[0039] Optionally, the contact interface 21 also includes a first ground pin. The first ground pin provides a reference ground potential for the charging circuit, discharges interference current, and ensures the stability of the charging circuit.

[0040] The second charging module 40 includes a second detection circuit 50 and a second charging circuit 60. The second detection circuit 50 includes a USB interface 51, and the two ends of the second charging circuit 60 are connected to the USB interface 51 and the battery 210, respectively, to realize the transfer of electrical energy. After the second external device 120 is connected to the USB interface 51, the second external device 120 charges the battery 210 through the USB interface 51 and the second charging circuit 60.

[0041] The USB 51 interface has a unified interface standard, is compatible across devices, and can simultaneously provide charging and data transfer capabilities. Furthermore, the USB 51 interface has a mature structure, controllable cost, and high charging safety.

[0042] Optionally, the USB interface 51 may include, but is not limited to, a Type A Universal Serial Bus (USB-A) interface, a Micro-USB interface, a Type B Universal Serial Bus (USB-B) interface, a Type C Universal Serial Bus (USB Type-C) interface, etc., and this application embodiment does not limit this.

[0043] The contact interface 21 and the USB interface 51 have different structures and are less expensive. Therefore, the functions of the corresponding first charging module 10 and second charging module 40 are not entirely the same. Since the functionality of the contact interface 21 is weaker than that of the USB interface 51, the second charging module 40 has more functions than the first charging module 10. The cost of the first charging module 10 is lower than that of the second charging module 40. Optionally, the second charging module 40 may have functions such as connecting a USB flash drive for high-speed data transfer, reverse power supply, and connecting headphones for audio output.

[0044] Optionally, please refer to Figure 2 The first charging module 10 and the second charging module 40 can operate simultaneously. Moreover, the connection order between the contact interface 21 and the corresponding first external device 110, and between the USB interface 51 and the corresponding second external device 120, is not limited.

[0045] In this way, when the battery 210 is being charged through the contact interface 21, the USB interface 51 can be left free to ensure that the second charging module 40 can be used independently and normally, thereby meeting the user's multi-functional needs and improving the user experience of the vehicle's smart cockpit.

[0046] Another existing solution uses wireless charging, magnetically attaching the terminal device to a dedicated charging structure for wireless charging protocol interaction and charging, thus freeing up the original charging interface of the terminal device. However, this solution requires the terminal device to have a built-in wireless charging receiver coil and corresponding management module to achieve wireless charging, and it also increases the height and weight of the terminal device, increasing production costs and affecting the thinness and portability of the terminal device. Compared to the wireless charging solution, this application eliminates the need for components such as wireless charging receiver coils that increase the height and weight of the terminal device, and does not reduce the thinness and portability of the terminal device.

[0047] Optionally, the USB interface 51 may also include, but is not limited to, Thunderbolt interfaces (such as Thunderbolt3, Thunderbolt4), etc., which are not limited in this embodiment.

[0048] In one alternative embodiment, please refer to Figure 1 and Figure 2 The first charging circuit 30 includes a first charging management module 31 and a first buck-boost module 32, and the contact interface 21 is configured to connect to a first external device 110. The first charging management module 31 is configured to control the first buck-boost module 32 to enter the working state when the first external device 110 is connected to the contact interface 21 and the first external device 110 has power supply capability. The first buck-boost module 32 is configured to convert the voltage connected to the power transmission sub-interface 23 into the charging voltage of the battery 210 when it is in operation.

[0049] The output voltage of the first external device 110 may be greater than or less than the charging voltage of the battery 210. To ensure the safety of the battery 210, the first charging management module 31 can detect the output voltage of the first external device 110 through the charging detection sub-interface 22 and / or the power transmission sub-interface 23, and control the first buck-boost module 32 to boost or buck the voltage, converting the output voltage of the first external device 110 into the charging voltage of the battery 210, thereby improving the safety and stability of the charging process.

[0050] Optionally, the first charging management module 31 may be a charging management integrated circuit (i.e., a charging IC), a charging control microcontroller, etc., and the first buck-boost module 32 may be a buck-boost circuit, an integrated DC-DC buck-boost chip, etc. The embodiments of this application do not limit this.

[0051] In one alternative embodiment, please refer to Figure 1 The charging control circuit 100 also includes a power management module 70, which is connected to the first charging module 10 and the battery 210 respectively. The power management module 70 is communicatively connected to the first charging management module 31 in the first charging module 10 and can be used to monitor the charging process of the first charging module 10 and the operating status of the battery 210, so as to ensure the overall charging stability and safety.

[0052] The first charging management module 31 is configured to detect the remaining state of charge (SOC) of the battery 210, and, if the remaining state of charge is less than a first preset power threshold and the contact interface 21 is connected to the first external device 110, control the first buck-boost module 32 to charge the battery 210 and supply power to the power management module 70. The first preset power threshold is a default value set based on experience, such as 50%.

[0053] Specifically, the first charging management module 31 is connected to the battery 210 and can collect the battery status information (such as voltage, current, temperature, etc.) of the battery 210 in real time or periodically, and accurately calculate the remaining power of the battery 210 based on this battery status information and the corresponding preset algorithm.

[0054] Please combine Figure 2 When the remaining charge of battery 210 is less than a first preset charge threshold, i.e., when battery 210 is in a discharged state, if the contact interface 21 is connected to the first external device 110 to charge battery 210, then the first charging module 10 will charge the power management module 70 instead of the discharged battery 210 supplying power to the power management module 70. This avoids damage to battery 210 and unstable power supply caused by the discharged battery 210, ensuring stable operation of the power management module 70, protecting battery 210, and improving battery life and overall safety.

[0055] In one alternative embodiment, please refer to Figure 1 and Figure 2The power management module 70 is configured to acquire the remaining power of the battery 210 and, if the remaining power is greater than a second preset power threshold, control the battery 210 to supply power to the power management module 70. The second preset power threshold is a default value set based on experience, and is greater than or equal to a first preset power threshold, for example, 70%. Optionally, the second preset power threshold being greater than the first preset power threshold can provide a buffer, thereby preventing frequent fluctuations in the discharge process of the battery 210 and improving overall stability.

[0056] The first charging management module 31 is also configured to stop supplying power to the power management module 70 when the remaining power is greater than or equal to a first preset power threshold.

[0057] Specifically, when the initial remaining charge of battery 210 is less than a first preset charge threshold, the first charging module 10 charges battery 210 while simultaneously supplying power to the power management module 70. This prevents battery 210 from outputting power when its remaining charge is low (in a discharged state), reducing the probability of over-discharge and improving safety. When the initial remaining charge of battery 210 is greater than a second preset charge threshold, the first charging module 10 only charges battery 210, and battery 210 supplies power to the power management module 70.

[0058] Compared to the first charging module 10 supplying power to the power management module 70, the battery 210 supplying power to the power management module 70 can avoid power fluctuations of the first external device 110, reduce circuit losses, reduce heat generation and static power consumption, extend the service life of devices, and improve power supply stability.

[0059] Optionally, the power management module 70 is configured to generate a power-stop command and transmit it to the first charging management module 31 when the remaining power of the battery 210 is greater than or equal to a first preset power threshold; or, when receiving power from the battery 210, it generates a power-stop command and transmits it to the first charging management module 31. The first charging management module 31 is configured to stop supplying power to the power management module 70 when it receives a power-stop command.

[0060] In one alternative embodiment, please refer to Figure 1 and Figure 2 The charging control circuit 100 also includes a power management module 70, which is connected to the USB interface 51 in the second detection circuit 50 through the second charging circuit 60. USB interface 51 is configured to connect to a second external device 120 (such as a USB flash drive). Power management module 70 is configured to transmit data between USB interface 51 and the second external device 120 when USB interface 51 is connected, thereby fulfilling the user's multi-functional needs and improving the user experience.

[0061] In one alternative embodiment, please refer to Figure 1 and Figure 2 The charging control circuit 100 also includes a power management module 70, and the second charging circuit 60 includes a second charging management module 61. The power management module 70 and the second charging management module 61 are communicatively connected.

[0062] USB interface 51 is configured to connect to a second external device 120; the second charging management module 61 is configured to obtain device information of the second external device 120, including whether the second external device 120 has power supply capability.

[0063] Optionally, the USB interface 51 may include, but is not limited to, a second power supply pin, a second ground pin, a second detection pin, and a data transmission pin, etc., and this embodiment does not limit this. The second power supply pin is used to transmit electrical energy; the second ground pin provides a reference ground potential for the charging circuit, discharges interference current, and ensures the stability of the charging circuit. The second detection pin is used to identify the connection status of the second external device 120 (e.g., reversible insertion identification), to determine whether the connection is with a power supplier or a power receiver and to provide feedback to the second charging management module 61, and for negotiating the power transmission protocol. The data transmission pin is used for data transmission between the second external device 120, the second charging management module 61, and the power management module 70, so that the second charging management module 61 can obtain device information.

[0064] Optionally, the second detection pin can be a configuration channel 1 / 2 (i.e., CC1 / CC2), etc., and the data transmission pin can be a USB 2.0 D+ / D- differential data pair (i.e., DP / DM), etc., which are not limited in this application embodiment.

[0065] The power management module 70 is configured to acquire battery status information of battery 210, structural information of second charging module 40, and device information of second external device 120, and determine the maximum charging current based on the battery status information, and determine the maximum reverse power supply current based on the battery status information and structural information of second charging module 40.

[0066] The battery status information includes the SOC, voltage, temperature, and other status information of battery 210. The power management module 70 collects the battery status information of battery 210 in real time, or the first charging management module 31 / second charging management module 61 collects the battery status information of battery 210 in real time and transmits it to the power management module 70. Based on the battery characteristic curve and safety threshold of battery 210, the power management module 70 dynamically calculates and sets the current maximum allowable charging current, thereby preventing overcharging or overheating of battery 210, ensuring the safety of charging battery 210, and improving the service life of battery 210.

[0067] The structural information of the second charging module 40 includes interface specifications, line impedance, device rated current, protection threshold, etc. The power management module 70 integrates the battery status information and the structural information of the second charging module 40, and dynamically sets the maximum reverse power supply current that does not exceed the safety limit of both the battery 210 and the second charging module 40, thereby avoiding overcurrent damage to the battery 210 and / or the various components of the second charging module 40.

[0068] The power management module 70 is also configured to, when the second external device 120 has power supply capability, determine the corresponding charging mode (such as fast charging or slow charging) and corresponding charging power based on device information and maximum charging current, thereby determining the target charging current of the second external device 120; when the second external device 120 does not have power supply capability, determine the corresponding discharging mode and corresponding discharging power based on device information and maximum reverse supply current, thereby determining the target supply current of the battery 210. In this way, different target charging currents / target discharging currents can be configured to adapt to different usage scenarios, ensuring the charging and discharging safety of the battery 210, thereby extending the service life of the battery 210.

[0069] Optionally, the power management module 70 includes a power management circuit 71 and a main controller 72. The power management circuit 71 is responsible for stabilizing the voltage and providing charge and discharge protection. The main controller 72, as the control core, implements intelligent strategy scheduling, communicates and interacts with the first charging management module 31 and the second charging management module 61, and determines information such as charging and discharging current based on data such as battery status information. The power management circuit 71 may include, but is not limited to, a power management integrated circuit (PMIC) chipset, and the main controller 72 may include, but is not limited to, a microcontroller unit (MCU), a system on a chip (SoC), etc., which are not limited in this embodiment.

[0070] In one alternative embodiment, please refer to Figure 1The second charging circuit 60 includes a second charging main circuit 62 and at least one charging sub-circuit 63. Figure 1 (In the example, there is one), the rated charging power of the second charging main circuit 62 is less than the rated charging power of any charging sub-circuit 63; The second charging management module 61 is configured to determine the corresponding charging power and matching charging circuit based on the target charging current, and then control the matching charging circuit (the second charging main circuit 62 or any charging sub-circuit 63) to perform charging; based on the target supply current, it controls the second charging main circuit 62 or any charging sub-circuit 63 to perform reverse power supply, which is similar to the method based on the target charging current, and will not be elaborated here. In this way, by using the second charging main circuit 62 in conjunction with the charging sub-circuit 63, the charging / discharging requirements under different protocols can be met.

[0071] In one optional embodiment, the charging electronic circuit 63 includes a charge pump circuit. The charge pump is an inductorless boost, buck, and charge transfer topology, which can be used to form a high-current, high-power charging and discharging path. Moreover, the circuit formed by the charge pump has high conversion efficiency and low heat generation, which can improve the stability of the charging and discharging process.

[0072] Optionally, the second charging main circuit 62 is packaged together with the second charging management module 61, while the charging sub-circuit 63 is packaged separately. Since the rated charging power of the second charging main circuit 62 is relatively low, compared to packaging the high-power charging sub-circuit 63 together with the second charging management module 61, it offers a wider range of options and lower cost. Furthermore, the separately packaged charging sub-circuit 63 is less expensive than modifying the original structure where the second charging main circuit 62 and the second charging management module 61 are packaged together.

[0073] Based on the above description of the charging control circuit 100, this application also provides an electronic device, please refer to... Figure 3 , Figure 3 This is a schematic diagram of the structure of an electronic device provided in certain embodiments of this application. The electronic device 200 includes a battery 210 and a charging control circuit 100 as described in any of the above embodiments. The battery 210 is connected to a first external device 110 (such as a power supply) and / or a second external device 120 (such as a power supply, headphones, USB flash drive, etc.) through the charging control circuit 100, receiving power from the first external device 110 or the second external device 120, or supplying power to the second external device 120, and transmitting data with the second external device 120. In this way, while using the first charging module 10 to achieve wireless charging and discharging, the second charging module 40 can achieve multiple functions such as data transmission, thereby improving the user experience.

[0074] Based on the above description of the charging control circuit 100 and the electronic device 200, this application also provides a vehicle, please refer to... Figure 4 , Figure 4 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 300 includes a power supply bracket 310, which is used to support and limit the aforementioned electronic equipment 200.

[0075] In an alternative embodiment, the power supply bracket 310 includes a power supply interface 311 for discharging, which is configured to selectively connect to a contact interface 21 of the charging control circuit 100 in the electronic device 200 or a USB interface 51.

[0076] The power supply bracket 310 converts the electrical energy in the vehicle 300 into electrical energy in the form of a charging voltage compatible with the battery 210, and transmits it to the first charging module 10 or the second charging module 40 through the power supply interface 311, thereby charging the battery 210. In this way, charging via concealed wiring can be achieved through the power supply bracket 310, reducing the risk of tripping over wires. When charging the battery 210 through the contact interface 21, the multi-functional USB interface 51 is freed up, adapting to the user's high-intensity, multi-functional usage needs, and thus improving the intelligent cockpit user experience of the vehicle 300.

[0077] Optionally, the power supply bracket 310 can be installed on the back of the front seat, the armrest of the rear cabin, or other locations. The power supply bracket 310 can connect to active components such as in-vehicle wireless charging pads and in-vehicle cigarette lighters and perform voltage conversion; however, this embodiment of the application does not limit this.

[0078] In the description of this specification, the terms "certain embodiments," "an alternative embodiment," "exemplarily," "optionally," etc., refer to specific features, structures, materials, or characteristics described in connection with embodiments or examples that 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A charging control circuit, characterized in that, include: The first charging module includes a first detection circuit and a first charging circuit. The first detection circuit includes a contact interface, and the two ends of the first charging circuit are respectively connected to the contact interface and the battery. The second charging module includes a second detection circuit and a second charging circuit. The second detection circuit includes a USB interface. The two ends of the second charging circuit are respectively connected to the USB interface and the battery. The structure of the USB interface is different from that of the contact interface.

2. The charging control circuit according to claim 1, characterized in that, The contact interface includes at least one of a spring pin interface, a spring-loaded electrical connection interface, and a magnetic contact interface.

3. The charging control circuit according to claim 1, characterized in that, The contact interface is configured to connect to a first external device, and the contact interface includes a charging detection sub-interface and a power transmission sub-interface. The charging detection sub-interface is configured to detect whether it is connected to the first external device. The power transmission sub-interface is connected to the first charging circuit, and the power transmission sub-interface is used to transmit power.

4. The charging control circuit according to claim 3, characterized in that, The charging detection sub-interface is also configured to detect whether the first external device has power supply capability when the first external device is connected. The power transmission sub-interface is configured to transmit the power output by the first external device to the first charging circuit when the first external device is connected to the contact interface and the first external device has power supply capability.

5. The charging control circuit according to claim 4, characterized in that, The first charging circuit includes a first charging management module and a first buck-boost module, wherein the first buck-boost module is connected to the power transmission sub-interface and the battery, respectively. The first charging management module is configured to control the first buck-boost module to enter the working state when the first external device is connected to the contact interface and the first external device has power supply capability. The first buck-boost module is configured to, when in the operating state, convert the voltage connected to the power transmission sub-interface into a charging voltage adapted to the battery.

6. The charging control circuit according to claim 5, characterized in that, It also includes a power management module, which is connected to the first charging module and the battery respectively; The first charging management module is configured to detect the remaining power of the battery, and when the remaining power is less than a first preset power threshold and the first buck-boost module is in operation, control the first buck-boost module to charge the battery and supply power to the power management module.

7. The charging control circuit according to claim 6, characterized in that, The power management module is configured to acquire the remaining power of the battery, and control the battery to supply power to the power management module when the remaining power is greater than a second preset power threshold, wherein the second preset power threshold is greater than or equal to the first preset power threshold. The first charging management module is also configured to stop supplying power to the power management module when the remaining power is greater than or equal to the first preset power threshold.

8. The charging control circuit according to any one of claims 1 to 7, characterized in that, It also includes a power management module, which is connected to the USB interface in the second detection circuit via the second charging circuit; The USB interface is configured to connect a second external device; The power management module is configured to transmit data with the second external device via the USB interface when the second external device is connected via the USB interface.

9. The charging control circuit according to any one of claims 1 to 7, characterized in that, It also includes a power management module, and the second charging circuit includes a second charging management module, the power management module being communicatively connected to the second charging module; The USB interface is configured to connect a second external device; The second charging management module is configured to, when the second external device is connected to the USB interface, obtain device information of the second external device, the device information including whether the second external device has power supply capability; The power management module is configured to acquire battery status information of the battery, structural information of the second charging module and device information of the second external device, and determine the maximum charging current based on the battery status information, and determine the maximum reverse power supply current based on the battery status information and the structural information of the second charging module. The power management module is further configured to determine the target charging current of the second external device based on the device information and the maximum charging current, when the second external device has power supply capability. The power management module is also configured to determine the target power supply current of the battery based on the device information and the maximum reverse power supply current when the second external device does not have power supply capability.

10. The charging control circuit according to claim 9, characterized in that, The second charging circuit includes a second charging main circuit and at least one charging sub-circuit, wherein the rated charging power of the second charging main circuit is less than the rated charging power of any of the charging sub-circuits. The second charging management module is configured to control the second charging main circuit or any of the charging sub-circuits to charge based on the target charging current; Based on the target power supply current, control the second charging main circuit or any of the charging sub-circuits to supply power in reverse.

11. The charging control circuit according to claim 10, characterized in that, The charging sub-circuit includes a charge pump circuit.

12. An electronic device, characterized in that, It includes a battery and a charging control circuit according to any one of claims 1 to 11.

13. A vehicle, characterized in that, It includes a power supply bracket for supporting and limiting the electronic device of claim 12.

14. The vehicle according to claim 13, characterized in that, The power supply bracket includes a power supply interface for discharging, which is configured to connect to a contact interface or a USB interface of the charging control circuit in the electronic device.

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