Multifunctional charger

Abstract

The utility model relates to the technical field of charging, and provides a multifunctional charger comprising an input module which comprises an AC power supply and a power factor correction circuit connected with the AC power supply; the conversion module comprises a first resonant conversion circuit, a second resonant conversion circuit, a main control chip, a constant-voltage constant-current control circuit and a micro-control unit; the power factor correction circuit is respectively connected with the first resonant conversion circuit and the second resonant conversion circuit; the main control chip is respectively connected with the first resonant conversion circuit and the constant-voltage constant-current control circuit; the micro-control unit is connected with the constant-voltage and constant-current control circuit; the output module comprises a first output unit and a second output unit; the second output unit is connected with the second resonant conversion circuit; the first output unit is connected with the first resonant conversion circuit and the micro-control unit.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a multifunctional charger. Background Art

[0002] With the continuous advancement and development of science and technology, the types of electrical appliances that people can come into contact with in their daily lives are increasing. Among them, charging devices with characteristics such as portability and flexibility are widely favored by people.

[0003] However, since different charging devices support different charging methods and built-in battery types, when users need to travel, they often need to carry multiple different chargers to meet the charging needs of various charging devices. As can be seen, chargers based on existing technologies not only support a relatively limited charging method, but also need to be more portable.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of this application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] Based on this, it is necessary to provide a multifunctional charger to address the above technical problems.

[0006] In a first aspect, the present application provides a multifunctional charger, comprising:

[0007] An input module, the input module comprising an AC power supply and a power factor correction circuit connected to the AC power supply;

[0008] A conversion module, the conversion module including a first resonant conversion circuit, a second resonant conversion circuit, a main control chip, a constant voltage and constant current control circuit, and a micro control unit; the power factor correction circuit is respectively connected to the first resonant conversion circuit and the second resonant conversion circuit; the main control chip is respectively connected to the first resonant conversion circuit and the constant voltage and constant current control circuit; the micro control unit is connected to the constant voltage and constant current control circuit;

[0009] The output module includes a first output unit and a second output unit; the second output unit is connected to the second resonant conversion circuit; and the first output unit is respectively connected to the first resonant conversion circuit and the micro control unit.

[0010] In one embodiment, the microcontroller unit is used to output a voltage control signal; the constant voltage and constant current control circuit is used to output a voltage and current feedback signal based on the voltage control signal; the main control chip is used to output a pulse width modulation signal based on the voltage and current feedback signal; and the first resonant conversion circuit is used to output a first supply voltage through the first output unit based on the pulse width modulation signal.

[0011] In one embodiment, the second resonant conversion circuit is configured to output a second supply voltage through the second output unit.

[0012] In one embodiment, the first supply voltage is greater than the second supply voltage.

[0013] In one embodiment, the first output unit is a wired output unit; the second output unit is a wireless output unit.

[0014] In one embodiment, the wired output unit includes a Type-C interface.

[0015] In one embodiment, the wireless output unit includes a wireless transmitting device.

[0016] In one embodiment, a conversion switch is provided inside the first resonant conversion circuit.

[0017] In one embodiment, the micro control unit is further configured to control the on / off switching of the conversion switch.

[0018] In one embodiment, the output voltage of the AC power supply is 220V.

[0019] Compared with the existing technology, the beneficial effect of the present application is that the multifunctional charger provided by the present application can not only provide the power supply voltage required by digital products and electric-driven mobility devices, but also support the different charging methods required by digital products and electric-driven mobility devices through the mutual cooperation between the AC power supply and power factor correction circuit in the input module, the first resonant conversion circuit, the second resonant conversion circuit, the main control chip, the constant voltage and constant current control circuit, the microcontroller unit, and the first output unit and the second output unit in the conversion module. It can be seen that the multifunctional charger provided by the present application not only supports more charging methods than the existing technology, but also has better portability, which can effectively reduce the travel burden of users.

[0020] The present application will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings herein are incorporated into the specification and constitute a part of the specification. They illustrate some embodiments consistent with the present application and, together with the description, are used to explain the implementation principles of the present application.

[0022] Figure 1 This is a schematic structural diagram of a multi-function charger in one embodiment provided by the present application;

[0023] Figure 2 This is a schematic structural diagram of another multi-function charger in one embodiment provided by the present application;

[0024] Figure 3 This is a schematic structural diagram of another multi-function charger in one embodiment provided by the present application;

[0025] Description of Reference Numerals

[0026] AC power supply 110; power factor correction circuit 120;

[0027] First resonant conversion circuit 210; second resonant conversion circuit 220; main control chip 230;

[0028] Constant voltage and constant current control circuit 240; micro control unit 250;

[0029] First output unit 310; second output unit 320. DETAILED DESCRIPTION

[0030] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide 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 to make the disclosure of the present application more thorough and comprehensive.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0032] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on this application.

[0033] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0034] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0035] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] In the description of this specification, reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0037] In one embodiment, Figure 1 As shown, the present application provides a multifunctional charger, comprising:

[0038] An input module, the input module includes an AC power supply 110 and a power factor correction circuit 120 connected to the AC power supply 110;

[0039] The conversion module includes a first resonant conversion circuit 210, a second resonant conversion circuit 220, a main control chip 230, a constant voltage and constant current control circuit 240, and a micro control unit 250; the power factor correction circuit 120 is respectively connected to the first resonant conversion circuit 210 and the second resonant conversion circuit 220; the main control chip 230 is respectively connected to the first resonant conversion circuit 210 and the constant voltage and constant current control circuit 240; the micro control unit 250 is connected to the constant voltage and constant current control circuit 240;

[0040] The output module includes a first output unit 310 and a second output unit 320 ; the second output unit 320 is connected to the second resonant conversion circuit 220 ; the first output unit 310 is connected to the first resonant conversion circuit 210 and the micro control unit 250 .

[0041] Among them, the AC power supply 110 is an AC input (alternating current input) power supply; the power factor correction circuit 120 is a PFC (Power Factor Correction) circuit; the first resonant conversion circuit 210 and the second resonant conversion circuit 220 are both LLC circuits, also known as resonant circuits (Resonant Converter), which refer to resonant circuits composed of two inductors and one capacitor; the microcontroller unit 250, namely the MCU (Microcontroller Unit), also known as a single chip microcomputer (Single Chip Microcomputer) or single chip microcomputer, is a chip-level computer formed by appropriately reducing the frequency and specifications of the central processing unit (CPU) and integrating peripheral interfaces such as memory, timer, USB, A / D conversion, UART, PLC, DMA, and even LCD driver circuits on a single chip.

[0042] In actual applications, the first output unit 310 and the second output unit 320 in the above-mentioned output module can both be used to connect to the device to be charged; the specific form of the device to be charged connected to the first output unit 310 can be an electric bicycle, electric motorcycle or other electric-driven transportation device; the specific form of the device to be charged connected to the second output unit 320 can be a digital product such as a mobile phone and a tablet computer.

[0043] The multifunctional charger provided by the present application can not only provide the power supply voltage required by digital products and electric-driven mobility devices, but also support the different charging methods required by digital products and electric-driven mobility devices through the cooperation between the AC power supply and power factor correction circuit in the input module, the first resonant conversion circuit, the second resonant conversion circuit, the main control chip, the constant voltage and constant current control circuit, the microcontroller unit in the conversion module, and the first output unit and the second output unit. It can be seen that the multifunctional charger provided by the present application, compared with the existing technology, not only supports more charging methods, but also has better portability, which can effectively reduce the travel burden of users.

[0044] In one embodiment, the microcontroller unit 250 is used to output a voltage control signal; the constant voltage and constant current control circuit 240 is used to output a voltage and current feedback signal based on the voltage control signal; the main control chip 230 is used to output a pulse width modulation signal based on the voltage and current feedback signal; and the first resonant conversion circuit 210 is used to output a first supply voltage through the first output unit 310 based on the pulse width modulation signal.

[0045] The voltage control signal refers to the voltage control signal output by the microcontroller unit 250; the voltage-current feedback signal refers to the voltage-current feedback signal output by the constant-voltage-constant-current control circuit 240 based on the voltage control signal received from the microcontroller unit 250; the pulse width modulation signal, or PWM signal (Pulse Width Modulation), also known as the pulse width modulation signal, refers to the pulse width modulation signal output by the main control chip 230 based on the voltage-current feedback signal received from the constant-voltage-constant-current control circuit 240; and the first supply voltage refers to the first supply voltage output by the first resonant conversion circuit 210 through the first output unit 310 based on the pulse width modulation signal received from the main control chip 230.

[0046] In practical applications, the specific form of the voltage control signal output by the micro control unit 250 can be a voltage control signal between 42V and 55V. For example, the voltage control signal output by the micro control unit 250 can be a 42V voltage control signal or a 55V voltage control signal.

[0047] The embodiment of the present application is based on signal transmission between the microcontroller unit, the constant voltage and constant current control circuit, the main control chip, and the first resonant conversion circuit, so that the first resonant conversion circuit can output the power supply voltage required for the electric-driven mobility device through the first output unit, which not only ensures the operating stability of the multi-function charger, but also effectively improves the charging efficiency of the multi-function charger.

[0048] In one embodiment, the second resonant conversion circuit 220 is configured to output a second supply voltage through the second output unit 320 .

[0049] In one embodiment, the first supply voltage is greater than the second supply voltage.

[0050] Among them, the first supply voltage refers to the first supply voltage output by the first resonant conversion circuit 210 through the first output unit 310 based on the pulse width modulation signal received from the main control chip 230; the second supply voltage refers to the second supply voltage output by the second resonant conversion circuit 220 through the second output unit 320.

[0051] Specifically, the first power supply voltage may be a power supply voltage suitable for electric bicycles, electric motorcycles and other electrically driven mobility devices; the second power supply voltage may be a power supply voltage suitable for digital products such as mobile phones and tablet computers.

[0052] In practical applications, the voltage range of the first supply voltage can be between 42V and 55V. For example, the specific voltage value of the first supply voltage can be a specific value such as 42V or 54.6V. The voltage range of the second supply voltage can be between 5V and 12V. For example, the specific voltage value of the second supply voltage can be a specific value such as 5V, 9V or 12V.

[0053] The embodiment of the present application enables the multi-function charger to power electric vehicles and digital products respectively through the first output unit and the second output unit by making the first power supply voltage output by the first output unit greater than the second power supply voltage output by the second output unit. This not only improves the device compatibility of the multi-function charger, but also effectively ensures the portability of the multi-function charger.

[0054] like Figure 2 As shown, in one embodiment, the first output unit 310 is a wired output unit; the second output unit 320 is a wireless output unit.

[0055] In one embodiment, the wired output unit includes a Type-C interface.

[0056] In one embodiment, the wireless output unit includes a wireless transmitting device.

[0057] For example, the application architecture of a multifunctional charger provided by this application can be as follows: Figure 3 The form shown.

[0058] In actual applications, the specific model of the Type-C interface can be selected according to actual needs. This application does not strictly limit the specific model of the Type-C interface; the specific model of the wireless transmitting device can be selected according to actual needs. This application does not strictly limit the specific model of the wireless transmitting device.

[0059] The embodiment of the present application adopts a Type-C interface to provide wired power to the electric-driven mobility device, and adopts a wireless transmitter to provide wireless power to the digital product, so that the multi-function charger can meet the charging needs of different types of digital products and electric-driven mobility devices, which not only improves the device compatibility of the multi-function charger, but also effectively ensures the portability of the multi-function charger.

[0060] In one embodiment, a conversion switch is provided inside the first resonant conversion circuit 210 .

[0061] In one embodiment, the micro control unit 250 is further configured to control the on / off of the transfer switch.

[0062] Among them, the conversion switch set inside the first resonant conversion circuit 210 can be used to control whether the first resonant conversion circuit 210 outputs the first supply voltage to the outside; the micro control unit 250 can control the on-off state of the conversion switch by sending a control command to the conversion switch set inside the first resonant conversion circuit 210.

[0063] Specifically, the microcontroller unit 250 controls the on / off state of the transfer switch in the following manner: when the first output unit 310 of the microcontroller unit 250 is connected to a device to be charged, the microcontroller unit 250 determines whether the currently connected device to be charged is the target charging device type of the first output unit 310 by identifying the communication protocol used by the device to be charged. Based on this, if the microcontroller unit 250 determines that the currently connected device to be charged is not the target charging device type of the first output unit 310 by identifying the communication protocol used by the device to be charged, the microcontroller unit 250 can control the transfer switch by sending a control command to not output the first supply voltage to avoid an accidental charging accident; if the microcontroller unit 250 determines that the currently connected device to be charged is the target charging device type of the first output unit 310 by identifying the communication protocol used by the device to be charged, the microcontroller unit 250 can control the transfer switch by sending a control command to output the first supply voltage to the outside.

[0064] In actual applications, if the target charging device type of the first output unit 310 is an electric bicycle using the CAN protocol, if the micro-control unit 250 recognizes that the communication protocol used by the device to be charged is the CAN protocol, it can output the first supply voltage to the outside through the following specific steps: First, the battery management system (BMS) in the device to be charged, upon detecting that the first output unit 310 of the charger has been connected, will send a pulse signal to the first output unit 310 based on a preset number of times and a preset pulse width. Then, the micro-control unit 250 connected to the first output unit 310 will send a control command to the conversion switch set inside the first output unit 310, instructing it to provide the corresponding supply voltage and current to the device to be charged.

[0065] For example, when the battery management system continuously outputs a pulse signal with a pulse width of 1 / 5 to the first output unit 310 three times, the micro control unit 250 connected to the first output unit 310 will provide a 42V power supply voltage and a 5A power supply current to the device to be charged through the first conversion switch 311; when the battery management system continuously outputs a pulse signal with a pulse width of 2 / 5 to the first output unit 310 three times, the micro control unit 250 connected to the first output unit 310 will provide a 42V power supply voltage and a 2A power supply current to the device to be charged through the first conversion switch 311; When the above-mentioned battery management system continuously outputs a pulse signal with a pulse width of 3 / 5 to the first output unit 310 three times, the micro control unit 250 connected to the first output unit 310 will provide a 54.6V power supply voltage and a 5A power supply current to the device to be charged through the first conversion switch 311; when the above-mentioned battery management system continuously outputs a pulse signal with a pulse width of 4 / 5 to the first output unit 310 three times, the micro control unit 250 connected to the first output unit 310 will provide a 54.6V power supply voltage and a 2A power supply current to the device to be charged through the first conversion switch 311.

[0066] The embodiment of the present application effectively avoids the occurrence of mischarging accidents by setting a conversion switch inside the first resonant conversion circuit and using a microcontroller unit to control the on and off of the conversion switch, thereby effectively ensuring the safety of the multi-function charger.

[0067] In one embodiment, the output voltage of the AC power supply 110 is 220V.

[0068] In actual applications, the specific model of the AC power supply 110 with an output voltage of 220V can be selected according to actual needs. This application does not strictly limit the specific model of the AC power supply 110 with an output voltage of 220V.

[0069] The embodiment of the present application ensures the versatility and device compatibility of the multi-function charger by selecting an AC power supply with an output voltage of 220V, thereby effectively expanding the application scenarios of the multi-function charger.

[0070] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0071] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A multifunctional charger, characterized in that: include: An input module, the input module comprising an AC power supply and a power factor correction circuit connected to the AC power supply; A conversion module, the conversion module including a first resonant conversion circuit, a second resonant conversion circuit, a main control chip, a constant voltage and constant current control circuit, and a micro control unit; the power factor correction circuit is respectively connected to the first resonant conversion circuit and the second resonant conversion circuit; the main control chip is respectively connected to the first resonant conversion circuit and the constant voltage and constant current control circuit; The micro control unit is connected to the constant voltage and constant current control circuit; The output module includes a first output unit and a second output unit; the second output unit is connected to the second resonant conversion circuit; and the first output unit is respectively connected to the first resonant conversion circuit and the micro control unit.

2. The multifunctional charger according to claim 1, characterized in that: The microcontroller unit is used to output a voltage control signal; the constant voltage and constant current control circuit is used to output a voltage and current feedback signal based on the voltage control signal; the main control chip is used to output a pulse width modulation signal based on the voltage and current feedback signal; The first resonant conversion circuit is configured to output a first supply voltage through the first output unit based on the pulse width modulation signal.

3. The multifunctional charger according to claim 2, characterized in that: The second resonant conversion circuit is configured to output a second supply voltage through the second output unit.

4. The multifunctional charger according to claim 3, characterized in that: The first supply voltage is greater than the second supply voltage.

5. The multifunctional charger according to claim 1, characterized in that: The first output unit is a wired output unit; the second output unit is a wireless output unit.

6. The multifunctional charger according to claim 5, characterized in that: The wired output unit includes a Type-C interface.

7. The multifunctional charger according to claim 5 or 6, characterized in that: The wireless output unit includes a wireless transmitting device.

8. The multifunctional charger according to claim 1, characterized in that: A conversion switch is provided inside the first resonant conversion circuit.

9. The multifunctional charger according to claim 8, characterized in that: The micro control unit is also used to control the on and off of the conversion switch.

10. The multifunctional charger according to claim 1, characterized in that: The output voltage of the AC power supply is 220V.

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