Multifunctional charger

Abstract

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

Description

Technical Field

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

[0002] With the rapid development of science and technology, the types of electronic products are increasing day by day. When users use various types of electronic products, they inevitably need to use chargers for charging. Usually, due to the different communication protocols adopted by the built-in batteries, chargers for different types of electronic products are difficult to be universal. For example, chargers used for digital products such as mobile phones and tablet computers cannot be used to charge electric drive transportation devices such as electric bicycles and electric motorcycles.

[0003] However, when users carrying multiple electronic products need to travel, in order to meet the charging needs of each electronic product, they often need to carry multiple chargers at the same time. It can be seen that the chargers implemented based on the existing technology not only have poor compatibility, but also their portability needs to be improved.

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

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

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

[0007] A power input module, the current input module includes an AC power supply, a power factor correction circuit, a resonant conversion circuit, and a main control chip; the AC power supply is connected to the power factor correction circuit; the power factor correction circuit is connected to the resonant conversion circuit; the resonant conversion circuit is connected to the main control chip;

[0008] A current conversion module, the current conversion module includes a DC conversion circuit, a fast charging protocol chip, a constant voltage and constant current control circuit, and a micro control unit; the constant voltage and constant current control circuit is connected to the main control chip; the DC conversion circuit is connected to the resonant conversion circuit; the fast charging protocol chip is respectively connected to the DC conversion circuit, the constant voltage and constant current control circuit, and the micro control unit;

[0009] A power supply output module, the power supply output module includes a conversion device and an output interface; the conversion device is respectively connected to the resonant conversion circuit, the micro control unit, the DC conversion circuit, and the output interface; the output interface is connected to the micro control unit.

[0010] In one embodiment, the conversion device includes a first conversion switch and a second conversion switch; the first conversion switch is respectively connected to the resonant conversion circuit, the micro control unit, and the output interface; the second conversion switch is respectively connected to the DC conversion circuit, the micro control unit, and the output interface.

[0011] In one embodiment, the micro control unit is configured to output a first switch control signal and a second switch control signal; the first conversion switch is configured to receive the first switch control signal and output a first power supply voltage; the second conversion switch is configured to receive the second switch control signal and output a second power supply voltage.

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

[0013] In one embodiment, the micro control unit is further connected to the constant voltage and constant current control circuit.

[0014] In one embodiment, the micro control unit is further configured to output a voltage control signal; the constant voltage and constant current control circuit is configured to receive the voltage control signal and output a voltage and current feedback signal; the main control chip is configured to receive the voltage and current feedback signal and output a pulse width modulation signal; the resonant conversion circuit is configured to receive the pulse width modulation signal and output a DC voltage.

[0015] In one embodiment, the DC voltage is 48V.

[0016] In one embodiment, the output voltage of the AC power supply is 220V.

[0017] In one embodiment, the fast charging protocol chip is a PD protocol chip.

[0018] In one embodiment, the output interface is a Type-C interface.

[0019] Compared with the prior art, the beneficial effects of the present application are as follows: A multifunctional charger provided by the present application, through the AC power supply, power factor correction circuit, resonant conversion circuit, and main control chip in the current input module, the DC conversion circuit, fast charging protocol chip, constant voltage and constant current control circuit, and micro control unit in the current conversion module, and the mutual cooperation between the conversion device and the output interface in the power supply output module, can not only charge digital products such as mobile phones and tablets, but also charge electric drive transportation devices such as electric bicycles and electric motorcycles. It can be seen that the multifunctional charger provided by the present application, compared with the prior art, not only has strong compatibility and can meet the charging requirements of various types of electronic products at the same time, but also has good portability. When users need to travel with multiple electronic products, they only need to carry one charger, effectively reducing the travel burden of users.

[0020] The following further describes the present application in conjunction with the attached drawings and specific embodiments. Description of the Drawings

[0021] The attached drawings here are incorporated into the description and form a part of this description, showing some embodiments in line with the present application, and are used together with the description to explain the implementation principle of the present application.

[0022] Figure 1 It is a schematic structural diagram of a multifunctional charger in an embodiment provided by the present application;

[0023] Figure 2 It is a schematic structural diagram of another multifunctional charger in an embodiment provided by the present application;

[0024] Figure 3 It is a schematic structural diagram of a multifunctional charger in some embodiments provided by the present application;

[0025] Figure 4 It is a schematic structural diagram of another multifunctional charger in some embodiments provided by the present application.

[0026] Description of the Reference Numerals in the Drawings

[0027] 110 AC power supply 120 Power factor correction circuit 130 Resonant conversion circuit

[0028] 140 Main control chip

[0029] 210 DC conversion circuit 220 Fast charging protocol chip 230 Constant voltage and constant current control circuit

[0030] 240 Micro control unit

[0031] 310 Conversion device 311 First conversion switch 312 Second conversion switch

[0032] 320 Output Interface Detailed Implementation Manner

[0033] To facilitate the understanding of this application, the following will provide a more comprehensive description of this application with reference to the relevant accompanying drawings. Embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of this application more thorough and comprehensive.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0035] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying 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 construed as a limitation of this application.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more unless otherwise specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In this application, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic 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 a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0040] In one embodiment, as Figure 1 shown, this application provides a multifunctional charger, including:

[0041] A power input module, the current input module includes an AC power supply 110, a power factor correction circuit 120, a resonant conversion circuit 130, and a main control chip 140; the AC power supply 110 is connected to the power factor correction circuit 120; the power factor correction circuit 120 is connected to the resonant conversion circuit 130; the resonant conversion circuit 130 is connected to the main control chip 140;

[0042] A current conversion module, the current conversion module includes a DC conversion circuit 210, a fast charging protocol chip 220, a constant voltage and constant current control circuit 230, and a micro control unit 240; the constant voltage and constant current control circuit 230 is connected to the main control chip 140; the DC conversion circuit 210 is connected to the resonant conversion circuit 130; the fast charging protocol chip 220 is respectively connected to the DC conversion circuit 210, the constant voltage and constant current control circuit 230, and the micro control unit 240;

[0043] A power supply output module, the power supply output module includes a conversion device 310 and an output interface 320; the conversion device 310 is respectively connected to the resonant conversion circuit 130, the micro control unit 240, the DC conversion circuit 210, and the output interface 320; the output interface 320 is connected to the micro control unit 240.

[0044] Among them, the AC power supply 110 is an AC input (AC input, Alternating Current input) power supply; the power factor correction circuit 120 is a PFC (Power Factor Correction) circuit; the resonant conversion circuit 130 is an LLC circuit, also known as a resonant circuit (Resonant Converter), which refers to a resonant circuit composed of two inductors and one capacitor; the DC conversion circuit 210 is a DC conversion (Direct Current Converter) circuit; the micro control unit 240, namely MCU (Microcontroller Unit), also known as a single chip microcomputer (Single Chip Microcomputer) or a 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 driving circuit on a single chip.

[0045] In practical applications, the output interface 320 in the power supply output module of the multi-function charger can be used to connect the device to be charged; the specific form of the device to be charged can be digital products such as mobile phones and tablet computers, or electric-driven transportation devices such as electric bicycles and electric motorcycles.

[0046] The multifunctional charger provided by the present application can charge not only digital products such as mobile phones and tablet computers, but also electric bicycles, electric motorcycles and other electric-driven walking devices through the cooperation between the AC power supply, power factor correction circuit, resonant conversion circuit, and main control chip in the current input module, the DC conversion circuit, fast charging protocol chip, constant voltage and constant current control circuit, and microcontroller unit in the current conversion module, and the conversion device and output interface in the power supply output module. It can be seen that the multifunctional charger provided by the present application, compared with the prior art, not only has strong compatibility and can meet the charging needs of various types of electronic products at the same time, but also has good portability. When users need to carry multiple electronic products when traveling, they only need to carry one charger, which effectively reduces the travel burden of users.

[0047] like Figure 2 As shown, in one embodiment, the conversion device 310 includes a first conversion switch 311 and a second conversion switch 312; the first conversion switch 311 is respectively connected to the resonant conversion circuit 130, the micro control unit 240, and the output interface 320; the second conversion switch 312 is respectively connected to the DC conversion circuit 210, the micro control unit 240, and the output interface 320.

[0048] In one embodiment, the micro control unit 240 is used to output a first switch control signal and a second switch control signal; the first conversion switch 311 is used to receive the first switch control signal and output a first power supply voltage; the second conversion switch 312 is used to receive the second switch control signal and output a second power supply voltage.

[0049] Specifically, when the above-mentioned output port is connected to the device to be charged, the micro control unit 240 will identify the communication protocol of the device to be charged to confirm the type of the device to be charged. If the micro control unit 240 confirms that the device to be charged is an electric-driven walking device such as an electric bicycle or electric motorcycle, it will output a first switch control signal to the first conversion switch 311, thereby causing the first conversion switch 311 to output a first power supply voltage to the outside; if the micro control unit 240 confirms that the device to be charged is a digital product such as a mobile phone or a tablet computer, it will first output a start signal to the fast charging protocol chip 220, and then output a second switch control signal to the second conversion switch 312, thereby causing the DC conversion circuit 210 connected to the fast charging protocol chip 220 to output a second power supply voltage through the second conversion switch 312.

[0050] In actual applications, the microcontroller unit 240 identifies the communication protocol of the device to be charged to confirm the type of the device to be charged. The specific method can be specifically manifested as follows: if the microcontroller unit 240 identifies that the communication protocol of the device to be charged is the CAN protocol, then the device to be charged is confirmed to be an electric bicycle, electric motorcycle or other electric-driven transportation device; if the microcontroller unit 240 identifies that the communication protocol of the device to be charged is the PD protocol, then the device to be charged is confirmed to be a digital product such as a mobile phone or a tablet computer.

[0051] Furthermore, when the output port is connected to the device to be charged, and the microcontroller unit 240 recognizes that the communication protocol of the device to be charged is the PD protocol, the specific steps for the charger to output the power supply voltage to the outside may include: first, the charger will broadcast to the device to be charged through the D+ line and the D- line to inform the device to be charged of the voltage type it can provide and the specific voltage value corresponding to each voltage type. Then, the device to be charged will output a request data packet containing the voltage type and specific voltage value selected by it to the charger. Next, the charger will evaluate its own power supply capability based on the request data packet, and output a response command to the device to be charged indicating that it has received the "request data packet". After that, the charger will perform internal voltage conversion according to the request data packet, and send a data packet to the device to be charged indicating that it has completed power supply preparation. Finally, the charger will provide the adjusted power supply voltage to the device to be charged through the output interface 320.

[0052] Furthermore, when the output port is connected to the device to be charged, and the microcontroller unit 240 recognizes that the communication protocol of the device to be charged is the CAN protocol, the specific steps of the charger outputting the power supply voltage to the outside may include: first, the battery management system (BMS) in the device to be charged, when detecting that the output interface 320 of the charger has been connected, will output a pulse signal to the charger based on a preset number of times and a preset pulse width. Then, the charging device will provide the corresponding power supply voltage and current to the device to be charged through the first conversion switch 311. For example, when the aforementioned battery management system continuously outputs a pulse signal with a pulse width of 1 / 5 to the charger for three times, the above-mentioned charging device 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 aforementioned battery management system continuously outputs a pulse signal with a pulse width of 2 / 5 to the charger for three times, the above-mentioned charging device 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 aforementioned battery management system continuously outputs a pulse signal with a pulse width of 3 / 5 to the charger for three times, the above-mentioned charging device 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 aforementioned battery management system continuously outputs a pulse signal with a pulse width of 4 / 5 to the charger for three times, the above-mentioned charging device 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.

[0053] In the embodiment of the present application, the first conversion switch is respectively connected to the resonant conversion circuit, the micro control unit, and the output interface, and the second conversion switch is respectively connected to the DC conversion circuit, the micro control unit, and the output interface, so that the charger can charge the digital product and the electric-driven mobility device respectively through the first conversion switch and the second conversion switch, thereby effectively ensuring the compatibility and portability of the charger.

[0054] In one embodiment, the first supply voltage is greater than the second supply voltage.

[0055] Among them, the first supply voltage refers to the supply voltage output by the first conversion switch 311; the second supply voltage refers to the supply voltage output by the second conversion switch 312; the first supply voltage is greater than the second supply voltage, which means that the supply voltage output by the first conversion switch 311 is greater than the supply voltage output by the second conversion switch 312.

[0056] 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.

[0057] In actual applications, the voltage range of the first supply voltage can be between 20V and 55V. For example, the specific voltage value of the first supply voltage can be 42V or 54.6V. The voltage range of the second supply voltage can be between 5V and 15V. For example, the specific voltage value of the second supply voltage can be 5V, 9V, 12V, 15V, 20V, 28V and other specific values ​​based on the PD3.1 fast charging protocol.

[0058] The embodiment of the present application ensures that the first power supply voltage output through the first conversion switch is greater than the second power supply voltage output through the second conversion switch, thereby not only ensuring that the charger can charge the digital product and the electric-driven mobility device respectively through the first conversion switch and the second conversion switch, but also effectively ensuring the charging efficiency of the charger.

[0059] like Figure 3 and Figure 4 As shown, in some embodiments, the micro control unit 240 is also connected to the constant voltage and constant current control circuit 230 .

[0060] In one embodiment, the microcontroller unit 240 is also used to output a voltage control signal; the constant voltage and constant current control circuit 230 is used to receive the voltage control signal and output a voltage and current feedback signal; the main control chip 140 is used to receive the voltage and current feedback signal and output a pulse width modulation signal; the resonant conversion circuit 130 is used to receive the pulse width modulation signal and output a DC voltage.

[0061] Among them, the voltage control signal refers to the voltage control signal output by the micro control unit 240; the voltage and current feedback signal refers to the voltage and current feedback signal output by the constant voltage and constant current control circuit 230 after receiving the voltage control signal from the micro control unit 240; the pulse width modulation signal, that is, the 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 140 after receiving the voltage and current feedback signal from the constant voltage and constant current control circuit 230; the DC voltage refers to the DC voltage output by the resonant conversion circuit 130 after receiving the pulse width modulation signal from the main control chip 140.

[0062] In practical applications, the specific form of the voltage control signal output by the micro control unit 240 may be a voltage control signal of 25V-55V.

[0063] The embodiment of the present application not only ensures the operating stability of the charger, but also effectively guarantees the charging efficiency of the charger by connecting the micro control unit to the constant voltage and constant current control circuit.

[0064] In one embodiment, the DC voltage is 48V.

[0065] Specifically, the DC voltage refers to the 48V DC voltage output by the resonant conversion circuit 130 after receiving the pulse width modulation signal from the main control chip 140.

[0066] By enabling the resonant conversion circuit to output a 48V DC voltage after receiving the pulse width modulation signal from the main control chip, the embodiments of the present application ensure the safety of the charger during use.

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

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

[0069] In one embodiment, the fast charging protocol chip 220 is a PD protocol chip.

[0070] In practical applications, the specific model of the PD protocol chip can be selected according to actual needs. The present application does not strictly limit the specific model of the PD protocol chip.

[0071] By selecting the PD protocol chip as the fast charging protocol chip in the current conversion module of the charger, the embodiments of the present application effectively ensure the protocol compatibility of the charger for various types of electronic products. Thus, when a user needs to travel with multiple electronic products, only one charger needs to be carried, which not only improves the portability of the charger but also effectively reduces the travel burden of the user.

[0072] In one embodiment, the output interface 320 is a Type-C interface.

[0073] Among them, the output interface 320 refers to the output interface 320 in the power supply output module of the above multi-functional charger.

[0074] In practical applications, the specific model of the Type-C interface can be selected according to actual needs. The present application does not strictly limit the specific model of the Type-C interface.

[0075] In the embodiment of the present application, by selecting the Type-C interface as the output interface of the charger, the interface compatibility of the charger for various types of electronic products is effectively ensured. Furthermore, when a user needs to travel with multiple electronic products, only one charger needs to be carried, which not only improves the portability of the charger but also effectively reduces the travel burden of the user.

[0076] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0077] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A multifunctional charger, characterized in that: include: A power input module, wherein the current input module includes an AC power supply, a power factor correction circuit, a resonant conversion circuit, and a main control chip; The AC power supply is connected to the power factor correction circuit; the power factor correction circuit is connected to the resonant conversion circuit; the resonant conversion circuit is connected to the main control chip; A current conversion module, the current conversion module includes a DC conversion circuit, a fast charging protocol chip, a constant voltage and constant current control circuit, and a micro control unit; the constant voltage and constant current control circuit is connected to the main control chip; the DC conversion circuit is connected to the resonant conversion circuit; the fast charging protocol chip is respectively connected to the DC conversion circuit, the constant voltage and constant current control circuit, and the micro control unit; A power supply output module, the power supply output module includes a conversion device and an output interface; the conversion device is respectively connected to the resonant conversion circuit, the micro control unit, the DC conversion circuit, and the output interface; the output interface is connected to the micro control unit.

2. The multifunctional charger according to claim 1, characterized in that: The conversion device includes a first conversion switch and a second conversion switch; the first conversion switch is respectively connected to the resonant conversion circuit, the micro control unit, and the output interface; the second conversion switch is respectively connected to the DC conversion circuit, the micro control unit, and the output interface.

3. The multifunctional charger according to claim 2, characterized in that: The micro control unit is used to output a first switch control signal and a second switch control signal; the first conversion switch is used to receive the first switch control signal and output a first power supply voltage; the second conversion switch is used to receive the second switch control signal and output a second power supply voltage.

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 or 2, characterized in that: The micro control unit is also connected to the constant voltage and constant current control circuit.

6. The multifunctional charger according to claim 5, characterized in that: The microcontrol unit is also used to output a voltage control signal; the constant voltage and constant current control circuit is used to receive the voltage control signal and output a voltage and current feedback signal; the main control chip is used to receive the voltage and current feedback signal and output a pulse width modulation signal; The resonant conversion circuit is used to receive the pulse width modulation signal and output a direct current voltage.

7. The multifunctional charger according to claim 6, characterized in that: The DC voltage is 48V.

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

9. The multifunctional charger according to claim 1, characterized in that: The fast charging protocol chip is a PD protocol chip.

10. The multifunctional charger according to claim 1, characterized in that: The output interface is a Type-C interface.

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