Current-adjustable charging circuit and electronic equipment
By designing an adjustable current charging circuit, including a main control module, a power supply module, an adjustment module, and an output module, and combining an impedance unit and temperature feedback, flexible adjustment of the charging current and improved safety are achieved, solving the problem of insufficient controllability of existing charging circuits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2026-03-03
AI Technical Summary
The controllability of existing charging circuits needs to be optimized, making it difficult to achieve flexible adjustment of charging current.
An adjustable current charging circuit is designed, including a main control module, a power supply module, an adjustment module, and an output module. The main control module realizes logic control, the adjustment module generates a charging current adjustment signal, and the output module outputs the adjusted current to the target load. Combined with an impedance unit and a switching unit, the charging current can be flexibly adjusted, and the charging process is optimized by feedback signals of battery status and ambient temperature.
It improves the flexibility and safety of the charging circuit, enables precise adjustment of the charging current, adapts to different load requirements, and enhances the controllability and safety of the charging process.
Smart Images
Figure CN223967685U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of charging and discharging circuit technology, and in particular to an adjustable current charging circuit and an electronic device. Background Technology
[0002] A charging circuit is a set of electronic circuits used to transfer electrical energy from a power source (such as a battery charger, adapter, etc.) to a rechargeable battery to restore its electrical energy. Charging technology is a comprehensive technology involving multiple fields such as chemistry, physics, and electronics. It is one of the key technologies driving energy transition and sustainable development. Charging technology has a wide range of applications in today's society, covering multiple fields, including mobile electronic devices, electric vehicles, energy storage systems, aerospace, etc.
[0003] In related technologies, charging circuits typically include: a power supply, which provides charging voltage and current, such as a battery charger or USB adapter; a charging controller, which controls the charging process and ensures the use of appropriate current and voltage, such as a charging IC (integrated circuit), which can perform current limiting and power management; power components, which regulate voltage and current, such as MOSFETs (field-effect transistors) and diodes, to ensure efficient energy transfer; a monitoring circuit, which monitors the battery status, including voltage monitoring, current monitoring, and temperature monitoring, to ensure the safety of the charging process; and a protection circuit, which prevents overcharging, over-discharging, and short circuits, such as fuses and overvoltage protection circuits.
[0004] However, current charging circuits have the following technical problems:
[0005] The controllability of the current charging circuit still needs to be optimized. Utility Model Content
[0006] Therefore, it is necessary to provide an adjustable current charging circuit and electronic device that can improve the controllability of the charging current in the charging circuit and enhance the flexibility of the charging circuit.
[0007] This application provides a current-adjustable charging circuit from a first aspect, comprising:
[0008] The main control module is used to implement the logic control of the charging circuit;
[0009] A power supply module, connected to the main control module, is used to provide a power signal to the charging circuit;
[0010] An adjustment module, connected to the main control module, is used to generate a charging current adjustment signal to adjust the charging current value of the charging circuit through the charging current adjustment signal.
[0011] The output module, connected to the main control module, is used to output the adjusted charging current to the target load.
[0012] In one embodiment, the adjustment module includes:
[0013] An impedance unit, connected to the main control module, is used to configure the charging current adjustment impedance. The charging current adjustment impedance cooperates with the charging current adjustment voltage output by the main control module to form the charging current adjustment signal.
[0014] A switching unit, connected to the impedance unit, is used to control the on / off state of the impedance unit circuit.
[0015] In one embodiment, a plurality of impedance units and switching units are provided, and the impedance units and switching units are arranged in a one-to-one correspondence. The plurality of impedance units form the charging current regulating impedance of the regulating module under the control of the corresponding switching units.
[0016] In one embodiment, several of the impedance units are connected in parallel and / or cross-connected in series.
[0017] In one embodiment, the charging circuit further includes:
[0018] A battery status feedback module, connected to the main control module, is used to collect and feed back the battery status feedback signal of the target load to the main control module.
[0019] In one embodiment, the battery status feedback module includes:
[0020] A temperature detection unit is used to detect the temperature of the target load and acquire a temperature feedback signal;
[0021] The main control module is also used to acquire the temperature feedback signal and adjust the charging current according to the temperature feedback signal.
[0022] In one embodiment, the charging circuit further includes:
[0023] An ambient temperature detection module, connected to the main control module, is used to detect the ambient temperature of the charging circuit and acquire the ambient temperature detection signal.
[0024] The main control module is also used to acquire the ambient temperature detection signal and adjust the charging current according to the ambient temperature detection signal.
[0025] In one embodiment, the ambient temperature detection module is based on a thermistor, which includes a negative temperature coefficient thermistor.
[0026] In one embodiment, the charging circuit further includes:
[0027] The communication control unit, connected to the main control module, is used to interact with an external data source to obtain charging control signals, which are used to control the charging state of the charging circuit.
[0028] This application provides an electronic device from a second aspect, including a current-adjustable charging circuit according to any one of the first aspects.
[0029] The aforementioned adjustable current charging circuit and electronic device, derived from the technical features in the claims, can achieve the following beneficial effects to address the technical problems raised in the background art:
[0030] This application provides an adjustable charging current, including a main control module, a power supply module, an adjustment module, and an output module. Specifically, the main control module is used to implement the logic control of the charging circuit; the power supply module is connected to the main control module and is used to provide a power signal to the charging circuit; the adjustment module is connected to the main control module and is used to generate a charging current adjustment signal to adjust the charging current value of the charging circuit; the output module is connected to the main control module and is used to output the adjusted charging current to the target load. In implementation, the power supply module provides a power signal to the charging circuit, and the power signal is output from the charging current output port to the output module through the main control module, and finally transmitted to the target load to realize charging. During this process, when the adjustment module generates the charging current adjustment signal, the main control module can adjust the charging current according to the preset control logic, thereby utilizing the simple hardware resources in the charging circuit to achieve charging current adjustment and improve the flexibility of the charging circuit application. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology 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.
[0032] Figure 1 This is a schematic diagram of the circuit structure of an adjustable current charging circuit according to an embodiment of this application;
[0033] Figure 2 This is a circuit connection diagram of an adjustable current charging circuit according to an embodiment of this application;
[0034] Figure 3This is a schematic diagram of the parallel connection of impedance units in one embodiment of this application;
[0035] Figure 4 This is a schematic diagram of the cross-series connection of impedance units in one embodiment of this application.
[0036] Explanation of reference numerals in the attached diagram: 100, main control module; 200, power supply module; 300, adjustment module; 310, impedance unit; 320, switching unit; 400, output module. Detailed Implementation
[0037] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.
[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0039] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.
[0040] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.
[0041] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.
[0042] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.
[0043] This application is based on the inventor's understanding and research on the following issues, specifically:
[0044] In related technologies, charging circuits typically include: a power supply, which provides charging voltage and current, such as a battery charger or USB adapter; a charging controller, which controls the charging process and ensures the use of appropriate current and voltage, such as a charging IC (integrated circuit), which can perform current limiting and power management; power components, which regulate voltage and current, such as MOSFETs (field-effect transistors) and diodes, to ensure efficient energy transfer; a monitoring circuit, which monitors the battery status, including voltage monitoring, current monitoring, and temperature monitoring, to ensure the safety of the charging process; and a protection circuit, which prevents overcharging, over-discharging, and short circuits, such as fuses and overvoltage protection circuits.
[0045] However, current charging circuits have the following technical problems:
[0046] The controllability of the current charging circuit still needs to be optimized.
[0047] Based on this, embodiments of this application provide an adjustable current charging circuit and an electronic device. It can be as follows... Figure 1 and Figure 2 As shown, Figure 1 The diagram shows a circuit structure schematic of an adjustable current charging circuit according to an embodiment of this application. Figure 2 The diagram shows a circuit connection schematic of an adjustable current charging circuit according to an embodiment of this application. This application provides an adjustable current charging circuit, including: a main control module 100, a power supply module 200, an adjustment module 300, and an output module 400.
[0048] The main control module 100 is used to implement the logic control of the charging circuit;
[0049] The power supply module 200 is connected to the main control module 100 and is used to provide power signals to the charging circuit;
[0050] The adjustment module 300 is connected to the main control module 100 and is used to generate a charging current adjustment signal to adjust the charging current value of the charging circuit through the charging current adjustment signal.
[0051] The output module 400 is connected to the main control module 100 and is used to output the adjusted charging current to the target load.
[0052] By implementing the above-described adjustable current charging circuit, the following beneficial effects can be achieved:
[0053] This application provides an adjustable charging current, including a main control module 100, a power supply module 200, an adjustment module 300, and an output module 400. Specifically, the main control module 100 is used to implement the logic control of the charging circuit; the power supply module 200 is connected to the main control module 100 and is used to provide a power signal to the charging circuit; the adjustment module 300 is connected to the main control module 100 and is used to generate a charging current adjustment signal to adjust the charging current value of the charging circuit; the output module 400 is connected to the main control module 100 and is used to output the adjusted charging current to the target load. In implementation, the power supply module 200 provides a power signal to the charging circuit, and the power signal is output from the charging current output port of the main control module 100 to the output module 400, and finally transmitted to the target load to realize the charging operation. During this process, when the charging current adjustment signal is generated in the adjustment module 300, the main control module 100 can adjust the charging current according to the preset control logic, thereby making use of the simple hardware resources in the charging circuit to adjust the charging current and improve the flexibility of the charging circuit application.
[0054] In one embodiment, the adjustment module 300 includes:
[0055] Impedance unit 310 is connected to the main control module 100 and is used to configure the charging current adjustment impedance. The charging current adjustment impedance cooperates with the charging current adjustment voltage output by the main control module 100 to form the charging current adjustment signal.
[0056] The switching unit 320 is connected to the impedance unit 310 and is used to control the on / off state of the circuit of the impedance unit 310.
[0057] For example, the management PROG of the main control module 100 can calculate and configure the charging current using the following formula:
[0058]
[0059] Where I_BAT is the battery charging current, V_PROG is the voltage of the PROG pin, which is generally controlled by the MCU; R_PROG is the resistor used to set the charging current, that is, the charging current adjustment impedance.
[0060] In this embodiment, the adjustment module 300 includes an impedance unit 310 and a switching unit 320. The switching unit 320 can control the on / off state of the circuit corresponding to the impedance unit 310, thereby adjusting the charging current adjustment impedance in the adjustment module 300. Thus, the charging current can be adjusted with simple hardware resources, improving the flexibility of the charging circuit and the convenience of charging current adjustment.
[0061] In one embodiment, a plurality of impedance units 310 and switching units 320 are provided, and the impedance units 310 and switching units 320 are arranged in a one-to-one correspondence. The plurality of impedance units 310 form the charging current regulating impedance of the regulating module 300 under the control of the corresponding switching unit 320.
[0062] In this embodiment, the impedance unit 310 and the switch unit 320 in the adjustment module 300 can be configured in multiple groups, thereby realizing flexible adjustment of multiple charging current adjustment impedances, which helps to further improve the flexibility of charging current adjustment.
[0063] In one embodiment, it can be as follows Figure 3 and Figure 4 As shown, several impedance units 310 are connected in parallel and / or cross-connected in series.
[0064] For example, the switching unit 320 shown in the figure is only an example, and in a specific implementation, it can also be implemented by switching devices such as switching transistors.
[0065] In this embodiment, the specific implementation of the connection between impedance units 310 may include multiple parallel or cross-series connections to achieve different current configurations, which helps to improve the flexibility of charging current adjustment.
[0066] In one embodiment, the charging circuit further includes:
[0067] The battery status feedback module is connected to the main control module 100 and is used to collect and feed back the battery status feedback signal of the target load to the main control module 100.
[0068] In this embodiment, a battery status feedback module is provided in the charging circuit. The charging current is adjusted by the battery status feedback module so that the charging current can be adapted to the charging needs of the target load, which helps to improve the safety of the charging circuit.
[0069] In one embodiment, the battery status feedback module includes:
[0070] A temperature detection unit is used to detect the temperature of the target load and acquire a temperature feedback signal;
[0071] The main control module 100 is also used to acquire the temperature feedback signal and adjust the charging current according to the temperature feedback signal.
[0072] In this embodiment, the battery status feedback module is equipped with a temperature detection module. The temperature detection module helps to detect the battery temperature of the target load, thereby adjusting the charging current based on the acquired temperature feedback signal, which helps to improve the safety of the charging circuit.
[0073] In one embodiment, the charging circuit further includes:
[0074] An ambient temperature detection module, connected to the main control module 100, is used to detect the ambient temperature of the charging circuit and acquire the ambient temperature detection signal.
[0075] The main control module 100 is also used to acquire the ambient temperature detection signal and adjust the charging current according to the ambient temperature detection signal.
[0076] In this embodiment, the charging circuit also includes an ambient temperature detection module. The ambient temperature detection module can detect the ambient temperature of the charging circuit, thereby adjusting the charging current based on the acquired ambient temperature detection signal, which helps to improve the safety of the charging circuit.
[0077] In one embodiment, the ambient temperature detection module is based on a thermistor, which includes a negative temperature coefficient thermistor.
[0078] In one embodiment, the charging circuit further includes:
[0079] The communication control unit, connected to the main control module 100, is used to interact with an external data source to obtain a charging control signal, which is used to control the charging state of the charging circuit.
[0080] In this embodiment, the charging circuit also includes a communication control unit. The communication control unit can interact with external data sources and conduct data exchange and charging circuit control with other circuits or components through the MCU (microcontroller unit), which helps to improve the flexibility of the charging circuit application configuration.
[0081] Based on the same inventive concept, this application also provides an electronic device, including a current-adjustable charging circuit according to one of the above-described embodiments.
[0082] It is understood that the above-mentioned adjustable current charging circuit and electronic device can also take other forms, and are not limited to the forms mentioned in the above embodiments, as long as they can achieve the function of improving the controllability of the charging current in the charging circuit and improving the flexibility of the charging circuit.
[0083] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.
[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0085] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A current adjustable charging circuit, characterized by, include: The main control module is used to implement the logic control of the charging circuit; A power supply module, connected to the main control module, is used to provide a power signal to the charging circuit; An adjustment module, connected to the main control module, is used to generate a charging current adjustment signal to adjust the charging current value of the charging circuit through the charging current adjustment signal. The output module, connected to the main control module, is used to output the regulated charging current to the target load; The adjustment module includes: An impedance unit, connected to the main control module, is used to configure the charging current adjustment impedance. The charging current adjustment impedance cooperates with the charging current adjustment voltage output by the main control module to form the charging current adjustment signal. A switching unit, connected to the impedance unit, is used to control the on / off state of the impedance unit circuit; The impedance unit and the switch unit are provided in a plurality of ways, and the impedance unit and the switch unit are arranged in a one-to-one correspondence. The plurality of impedance units form the charging current regulating impedance of the regulating module under the control of the corresponding switch unit.
2. The current adjustable charging circuit of claim 1, wherein, The impedance units are connected in parallel and / or cross-connected in series.
3. The current adjustable charging circuit of claim 1, wherein, The charging circuit also includes: A battery status feedback module, connected to the main control module, is used to collect and feed back the battery status feedback signal of the target load to the main control module.
4. The current adjustable charging circuit of claim 3, wherein, The battery status feedback module includes: A temperature detection unit is used to detect the temperature of the target load and acquire a temperature feedback signal; The main control module is also used to acquire the temperature feedback signal and adjust the charging current according to the temperature feedback signal.
5. The adjustable current charging circuit of claim 1, wherein, The charging circuit also includes: An ambient temperature detection module, connected to the main control module, is used to detect the ambient temperature of the charging circuit and acquire the ambient temperature detection signal. The main control module is also used to acquire the ambient temperature detection signal and adjust the charging current according to the ambient temperature detection signal.
6. The current adjustable charging circuit of claim 5, wherein, The ambient temperature detection module is based on a thermistor, which includes a negative temperature coefficient thermistor.
7. The adjustable current charging circuit of claim 1, wherein, The charging circuit also includes: The communication control unit, connected to the main control module, is used to interact with an external data source to obtain charging control signals, which are used to control the charging state of the charging circuit.
8. An electronic device, comprising: Includes the current-adjustable charging circuit according to any one of claims 1-7.