Combined charger with fast line charging and magnetic wireless charging

Abstract

The utility model relates to a wireless charger, in particular to a two-in-one wireless charger with a PD protocol, which comprises a first wireless charging seat, a second wireless charging seat and a PD output connector, and is characterized in that the second wireless charging seat is positioned between the first wireless charging seat and the PD output connector; the second wireless charging seat and the first wireless charging seat are communicated with the PD output connector through wires, and the first wireless charging seat comprises a first wireless charging shell and a main control circuit board arranged in the first wireless charging shell. The main control circuit board is provided with a USB-CF power supply connector, a power supply control module circuit, a main control chip, a PD protocol circuit and a charging output circuit, and the USB-CF power supply connector penetrates through the first wireless charging shell and extends to the outer side of the first wireless charging shell. The multifunctional charger is simple in structure and reasonable in design, can charge small-power earphones, watches and mobile phones and large-power wired electronic equipment at the same time, and meets diversified use requirements of users.

Description

Technical Field

[0001] The utility model relates to a wireless charger, in particular to a combined charger with wired fast charging and magnetic induction wireless charging. Background Art

[0002] Wireless charging technology originates from wireless power transmission technology. Since energy is transmitted between the charger and the electrical device through a magnetic field and there is no wire connection between the two, both the charger and the electrical device can be made without exposed conductive contacts. With the development of modern society, electronic products such as mobile phones are becoming more and more popular, and electronic devices with wireless charging functions appear more frequently in our lives.

[0003] Currently, with the progress of society, there are many three-in-one wireless chargers on the market for charging mobile phones, watches and earphones simultaneously. Its specific structure is as Figure 1 shown. The power output by such wireless chargers is basically less than 15W, which cannot meet the charging requirements of high-power wired electronic devices such as laptops. To solve this problem, the inventor designed a combined charger with wired fast charging and magnetic induction wireless charging. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a combined charger with wired fast charging and magnetic induction wireless charging, which has the advantages of simple structure, reasonable design, can wirelessly charge small-power earphones, watches and mobile phones, and can also charge high-power wired electronic devices at the same time, meeting the diverse usage needs of users, and solving the problems raised in the above technical background.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A combined charger with wired fast charging and magnetic induction wireless charging, including a first wireless charging base, a second wireless charging base and a PD output connector, wherein the second wireless charging base is located between the first wireless charging base and the PD output connector, and the second wireless charging base is connected to the first wireless charging base and the PD output connector through wires. The first wireless charging base includes a first wireless charging housing and a main control circuit board arranged in the first wireless charging housing. The main control circuit board is provided with a USB-CF power supply connector, a power control module circuit, a main control chip, a PD protocol circuit and a charging output circuit. The USB-CF power supply connector is electrically connected to the power control module circuit, and one end of the USB-CF power supply connector away from the main control circuit board penetrates through the first wireless charging housing and extends to the outside of the first wireless charging housing. The main control chip is respectively connected to the power control module circuit and the charging output circuit. The input end of the PD protocol circuit is connected to the USB-CF power supply connector, and the output end is connected to the power control module circuit.

[0006] Preferably, the first wireless charging stand further includes a first wireless charging coil and a strong magnet mounting seat disposed within the first wireless charging housing. The first wireless charging coil is located between the main control circuit board and the strong magnet mounting seat, and the first wireless charging coil is electrically connected to the main control circuit board. A plurality of magnets are mounted on the strong magnet mounting seat along its circumferential direction.

[0007] Preferably, the second wireless charging stand includes a second wireless charging stand housing, a secondary control circuit board, and a second wireless charging coil disposed within the second wireless charging stand housing. The second wireless charging coil is located above the secondary control circuit board, and the second wireless charging coil is electrically connected to the secondary control circuit board. A placement platform for placing a watch is provided on the outer side of the second wireless charging stand housing.

[0008] Preferably, the PD output connector is a TPYE-C connector, a USB connector, or a Lightning connector.

[0009] Preferably, the wire at least includes a communication line for communication and a power line for transmitting current.

[0010] Preferably, the power control module circuit is composed of a resistor R58, a resistor R59, a capacitor C58, a capacitor C59, and a power supply voltage regulator chip U4. One end of the resistor R58 is grounded, and the other end is respectively connected to the main control chip and the resistor R59. The end of the resistor R59 away from the resistor R58 is respectively connected to the power input terminal VIN and the 3rd pin of the power supply voltage regulator chip U4. The 1st pin of the power supply voltage regulator chip U4 is grounded, and the 2nd pin is respectively connected to the capacitor C59 and the 5V power output terminal. One end of the capacitor C58 is grounded, and the other end is connected to the power input terminal VIN and the 3rd pin of the power supply voltage regulator chip U4. The model of the power supply voltage regulator chip U4 is: SE8550.

[0011] Preferably, the model of the main control chip is: LDR6020.

[0012] Preferably, the PD protocol circuit is composed of a protocol switching chip U9, a field-effect transistor Q11, a field-effect transistor Q13, a resistor R68, a resistor R69, a resistor R80, and a resistor R87. The D pin of the field-effect transistor Q11 is connected to the PD output connector, the S pin is connected to the 16th pin of the main control chip, and the G pin is connected to the resistor R68 and the 6th pin of the main control chip respectively; the D pin of the field-effect transistor Q13 is connected to the PD output connector, the S pin is connected to the 8th pin of the main control chip, and the G pin is connected to the resistor R69 and the 3rd pin of the main control chip respectively; the resistor R80 and the resistor R87 are respectively connected to the 2nd and 10th pins of the protocol switching chip U9. The 1st pin of the protocol switching chip U9 is connected to the 5V power supply terminal, the 3rd and 4th pins are connected to the USB-CF power supply connector, the 6th and 7th pins are connected to the PD output connector, the 2nd and 10th pins of the protocol switching chip U9 are respectively connected to the 19th and 18th pins of the main control chip, and the model of the protocol switching chip U9 is WAS7227Q.

[0013] Preferably, the charging output circuit is composed of a first wireless charging stand power supply circuit, a second wireless charging stand power supply circuit, and a PD output connector power supply circuit. The first wireless charging stand power supply circuit, the second wireless charging stand power supply circuit, and the PD output connector power supply circuit respectively provide a power supply output current for the first wireless charging stand, the second wireless charging stand, and the PD output connector.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model provides a combined charger with wired fast charging and magnetic adsorption wireless charging. The two-in-one wireless charger is composed of a first wireless charging stand, a second wireless charging stand, and a PD output connector. The overall structure is simple and reasonable. The first wireless charging stand and the second wireless charging stand can meet the charging of small-power wireless electronic devices, and the PD output connector can be connected to high-power electronic devices for charging, meeting the diverse usage needs of users. The present utility model sets a PD protocol circuit on the main control circuit board. This PD protocol circuit can directly reach an agreement with the main control chip and supply power to the PD output connector through the power control module circuit to achieve the purpose of wired charging. By setting a first wireless charging coil and a second wireless charging coil in the first wireless charging stand and the second wireless charging stand, a magnetic-electric conversion mode is adopted to wirelessly charge small-power electronic devices. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a three-in-one wireless charger in the prior art of the present utility model;

[0017] Figure 2 is the overall structure diagram of the present utility model;

[0018] Figure 3 Explosion diagram of the first wireless charging stand of the present utility model;

[0019] Figure 4 Explosion diagram of the second wireless charging stand of the present utility model;

[0020] Figure 5 Principle block diagram of the main control circuit board of the present utility model;

[0021] Figure 6 Circuit diagram of the power control module circuit of the present utility model;

[0022] Figure 7 Circuit diagram of the main control chip and its peripheral circuits of the present utility model;

[0023] Figure 8 Circuit schematic diagram of the PD protocol circuit of the present utility model.

[0024] The reference numerals and names in the figure are as follows:

[0025] 1. First wireless charging stand; 11. Main control circuit board; 111. USB-CF power supply connector; 112. Power control module circuit; 113. Main control chip; 114. PD protocol circuit; 115. Charging output circuit; 1151. First wireless charging stand power supply circuit; 1152. Second wireless charging stand power supply circuit; 1153. PD output connector power supply circuit; 12. First wireless charging housing; 13. First wireless charging coil; 14. Strong magnet mounting seat; 15. Magnet; 2. Second wireless charging stand; 21. Second wireless charging stand housing; 22. Sub-control circuit board; 23. Second wireless charging coil; 24. Placing table; 3. PD output connector; 4. Wire. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model and for simplification, 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. Therefore, it should not be construed as a limitation to the present utility model. 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 the embodiments of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0028] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed 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 it can be the communication inside 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 the embodiments of the present utility model can be understood according to specific circumstances.

[0029] Please refer to Figure 2 , an embodiment provided by the present utility model: a combined charger with wired fast charging and magnetic induction wireless charging. The two-in-one wireless charger includes a first wireless charging base 1, a second wireless charging base 2, and a PD output connector 3. The second wireless charging base 2 is located between the first wireless charging base 1 and the PD output connector 3, and the second wireless charging base 2 is connected to the first wireless charging base 1 and the PD output connector 3 through a wire 4. The first wireless charging base 1 can charge a mobile phone or earphone with a power of 5 - 15W, the second wireless charging base 2 can charge a smartwatch with a power of 2.5W, and the PD output connector 3 can be connected to a laptop computer with a power of 65W for charging. Thus, it can charge small-power earphones, watches, and mobile phones while also charging a high-power laptop computer, meeting the diverse usage needs of users.

[0030] Specifically, the PD output connector 3 is a TPYE-C connector, a USB connector, or a Lightning connector. In this embodiment, the PD output connector 3 is preferably a Lightning connector.

[0031] Specifically, the wire 4 at least includes a communication line for communication and a power line for transmitting current.

[0032] Please refer to Figure 3 , in the figure, the first wireless charging stand 1 includes a first wireless charging housing 12 and a main control circuit board 11 disposed inside the first wireless charging housing 12. A USB-CF power supply connector 111 is provided on the main control circuit board 11. One end of the USB-CF power supply connector 111 away from the main control circuit board 11 penetrates through the first wireless charging housing 12 and extends to the outside of the first wireless charging housing 12. The first wireless charging stand 1 further includes a first wireless charging coil 13 and a strong magnet mounting seat 14 disposed inside the first wireless charging housing 12. The first wireless charging coil 13 is located between the main control circuit board 11 and the strong magnet mounting seat 14, and the first wireless charging coil 13 is electrically connected to the main control circuit board 11. A plurality of magnets 15 are mounted on the strong magnet mounting seat 14 along its circumferential direction. The plurality of magnets 15 can adsorb a charging device placed on the first wireless charging stand 1 to prevent it from falling.

[0033] Please refer to Figure 4 , in the figure, the second wireless charging stand 2 includes a second wireless charging stand housing 21, a secondary control circuit board 22 and a second wireless charging coil 23 disposed inside the second wireless charging stand housing 21. The second wireless charging coil 23 is located above the secondary control circuit board 22, and the second wireless charging coil 23 is electrically connected to the secondary control circuit board 22. A placement table 24 for placing a watch is provided on the outside of the second wireless charging stand housing 21.

[0034] Please refer to again Figure 3 and Figure 4 , the number of turns of the first wireless charging coil 13 and the second wireless charging coil 23 in this embodiment can be adjusted according to actual needs. The electromagnetic conversion technologies in the first wireless charging stand 1 and the second wireless charging stand 2 are both existing technologies and are well-known to those skilled in the art. The principle will not be elaborated here.

[0035] Please refer to Figure 5 , on the main control circuit board 11 in the figure, there are a USB-CF power supply connector 111, a power control module circuit 112, a main control chip 113, a PD protocol circuit 114 and a charging output circuit 115. The USB-CF power supply connector 111 is electrically connected to the power control module circuit 112. The main control chip 113 is respectively connected to the power control module circuit 112 and the charging output circuit 115. The input end of the PD protocol circuit 114 is connected to the USB-CF power supply connector 111, and the output end is connected to the power control module circuit 112.

[0036] Specifically, the charging output circuit 115 is composed of a first wireless charging stand power supply circuit 1151, a second wireless charging stand power supply circuit 1152, and a PD output connector power supply circuit 1153. The first wireless charging stand power supply circuit 1151, the second wireless charging stand power supply circuit 1152, and the PD output connector power supply circuit 1153 respectively provide a power supply output current to the first wireless charging stand 1, the second wireless charging stand 2, and the PD output connector 3.

[0037] Please refer to again Figure 5 , in this embodiment, by designing the PD protocol circuit 114, it can directly reach an agreement with the main control chip 113, and then supply power to the PD output connector 3 through the power control module circuit 112, so as to realize the synchronous output of wired and wireless power. At the same time, it should be noted that the first wireless charging stand power supply circuit 1151, the second wireless charging stand power supply circuit 1152, and the PD output connector power supply circuit 1153 respectively convert the 220V mains power into the required voltages of 7.5V, 5V, and 15V to charge the electronic devices on the first wireless charging stand 1, the second wireless charging stand 2, and the PD output connector 3. The conversion circuit here is also a well-known technology in the art, and its principle will not be elaborated here.

[0038] Please refer to Figure 6 , the power control module circuit 112 is composed of a resistor R58, a resistor R59, a capacitor C58, a capacitor C59, and a power supply voltage regulator chip U4. One end of the resistor R58 is grounded, and the other end is respectively connected to the main control chip 113 and the resistor R59; the end of the resistor R59 far from the resistor R58 is respectively connected to the power input terminal VIN and the 3rd pin of the power supply voltage regulator chip U4. The 1st pin of the power supply voltage regulator chip U4 is grounded, the 2nd pin is respectively connected to the capacitor C59 and the 5V power output terminal. One end of the capacitor C58 is grounded, and the other end is connected to the power input terminal VIN and the 3rd pin of the power supply voltage regulator chip U4. The model of the power supply voltage regulator chip U4 is: SE8550.

[0039] Please refer to Figure 7 , Figure 7 is the circuit diagram of the main control chip and its peripheral circuits of the present utility model. U7 in the figure is the above-mentioned main control chip 113, and its model is: LDR6020.

[0040] Please refer to Figure 8, the PD protocol circuit 114 in the figure is composed of a protocol switching chip U9, a field effect transistor Q11, a field effect transistor Q13, a resistor R68, a resistor R69, a resistor R80, and a resistor R87. The D pin of the field effect transistor Q11 is connected to the PD output connector 3, the S pin is connected to the 16th pin of the main control chip 113, and the G pin is respectively connected to the resistor R68 and the 6th pin of the main control chip 113; the D pin of the field effect transistor Q13 is connected to the PD output connector 3, the S pin is connected to the 8th pin of the main control chip 113, and the G pin is respectively connected to the resistor R69 and the 3rd pin of the main control chip 113; the resistor R80 and the resistor R87 are respectively connected to the 2nd and 10th pins of the protocol switching chip U9. The 1st pin of the protocol switching chip U9 is connected to the 5V power supply terminal, the 3rd and 4th pins are connected to the USB-CF power supply connector 111, the 6th and 7th pins are connected to the PD output connector 3, the 2nd and 10th pins of the protocol switching chip U9 are respectively connected to the 19th and 18th pins of the main control chip 113, and the model of the protocol switching chip U9 is WAS7227Q.

[0041] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A combined charger with wired fast charging and magnetic wireless charging, characterized in that: The invention comprises a first wireless charging seat (1), a second wireless charging seat (2) and a PD output connector (3), wherein the second wireless charging seat (2) is located between the first wireless charging seat (1) and the PD output connector (3), and the second wireless charging seat (2) is connected to the first wireless charging seat (1) and the PD output connector (3) via a wire (4); the first wireless charging seat (1) comprises a first wireless charging housing (12) and a main control circuit board (11) arranged in the first wireless charging housing (12); the main control circuit board (11) is provided with a USB-CF power supply connector (111), a power control module circuit (112), and a main control chip (113); ), a PD protocol circuit (114) and a charging output circuit (115), wherein a USB-CF power supply connector (111) is electrically connected to a power control module circuit (112), and an end of the USB-CF power supply connector (111) away from a main control circuit board (11) passes through a first wireless charging housing (12) and extends to the outside of the first wireless charging housing (12), the main control chip (113) is respectively connected to the power control module circuit (112) and the charging output circuit (115), the input end of the PD protocol circuit (114) is connected to the USB-CF power supply connector (111), and the output end is connected to the power control module circuit (112).

2. A combined charger with wired fast charging and magnetic wireless charging according to claim 1, characterized in that: The first wireless charging seat (1) further comprises a first wireless charging coil (13) and a strong magnet mounting seat (14) arranged in a first wireless charging housing (12); the first wireless charging coil (13) is located between a main control circuit board (11) and the strong magnet mounting seat (14); the first wireless charging coil (13) is electrically connected to the main control circuit board (11); and the strong magnet mounting seat (14) is provided with a plurality of magnets (15) along its circumferential direction.

3. A combined charger with wired fast charging and magnetic wireless charging according to claim 1, characterized in that: The second wireless charging stand (2) comprises a second wireless charging stand housing (21), and a sub-control circuit board (22) and a second wireless charging coil (23) arranged in the second wireless charging stand housing (21), wherein the second wireless charging coil (23) is located above the sub-control circuit board (22), and the second wireless charging coil (23) is electrically connected to the sub-control circuit board (22), and a placement table (24) for placing a watch is arranged on the outer side of the second wireless charging stand housing (21).

4. A combined charger with wired fast charging and magnetic wireless charging according to claim 1, characterized in that: The PD output connector (3) is a TPYE-C connector, a USB connector, or a Lightning connector.

5. A combined charger with wired fast charging and magnetic wireless charging according to claim 1, characterized in that: The conductor (4) comprises at least a communication line for communication and a power line for transmitting current.

6. A combined charger with wired fast charging and magnetic wireless charging according to claim 1, characterized in that: The power control module circuit (112) is composed of a resistor R58, a resistor R59, a capacitor C58, a capacitor C59 and a power voltage stabilizing chip U4, wherein one end of the resistor R58 is grounded, and the other end is respectively connected to the main control chip (113) and the resistor R59; the end of the resistor R59 away from the resistor R58 is respectively connected to the power input terminal VIN and the No. 3 pin of the power voltage stabilizing chip U4, the No. 1 pin of the power voltage stabilizing chip U4 is grounded, and the No. 2 pin is respectively connected to the capacitor C59 and the 5V power output terminal, one end of the capacitor C58 is grounded, and the other end is connected to the power input terminal VIN and the No. 3 pin of the power voltage stabilizing chip U4, and the model of the power voltage stabilizing chip U4 is: SE8550.

7. A combined charger with wired fast charging and magnetic wireless charging according to claim 1, characterized in that: The model of the main control chip (113) is: LDR6020.

8. A combined charger with wired fast charging and magnetic wireless charging according to claim 1, characterized in that: The PD protocol circuit (114) is composed of a protocol switching chip U9, a field effect transistor Q11, a field effect transistor Q13, a resistor R68, a resistor R69, a resistor R80, and a resistor R87, wherein the D pin of the field effect transistor Q11 is connected to the PD output connector (3), the S pin is connected to the No. 16 pin of the main control chip (113), and the G pin is respectively connected to the resistor R68 and the No. 6 pin of the main control chip (113); the D pin of the field effect transistor Q13 is connected to the PD output connector (3), the S pin is connected to the No. 8 pin of the main control chip (113), and the G pin is respectively connected to the resistor R68 and the No. 6 pin of the main control chip (113). The pins are respectively connected to the resistor R69 and the No. 3 pin of the main control chip (113); the resistor R80 and the resistor R87 are respectively connected to the No. 2 and No. 10 pins of the protocol switching chip U9; the No. 1 pin of the protocol switching chip U9 is connected to the 5V power supply end, the No. 3 and No. 4 pins are connected to the USB-CF power supply connector (111), the No. 6 and No. 7 pins are connected to the PD output connector (3), the No. 2 and No. 10 pins of the protocol switching chip U9 are respectively connected to the No. 19 and No. 18 pins of the main control chip (113), and the model of the protocol switching chip U9 is WAS7227Q.

9. A combined charger with wired fast charging and magnetic wireless charging according to claim 1, characterized in that: The charging output circuit (115) is composed of a first wireless charging seat power supply circuit (1151), a second wireless charging seat power supply circuit (1152) and a PD output connector power supply circuit (1153); the first wireless charging seat power supply circuit (1151), the second wireless charging seat power supply circuit (1152) and the PD output connector power supply circuit (1153) respectively provide power output current to the first wireless charging seat (1), the second wireless charging seat (2) and the PD output connector (3).

Images