Multi-port fast charging circuit and charging equipment

Abstract

The utility model relates to the technical field of charging, in particular to a multi-port fast charging circuit and charging equipment, the multi-port fast charging circuit comprises a first output / input circuit, a second output / input circuit, a third output circuit, a first interface and a second interface, the first output / input circuit is electrically connected with the second output / input circuit and the third output circuit at the same time, and the second interface is electrically connected with the third output circuit. The second output / input circuit is electrically connected with the first output / input circuit and the third output circuit simultaneously, the first interface is in signal connection with the first output / input circuit, and the second interface is in signal connection with the second output / input circuit; the first output / input circuit and the second output / input circuit can be charged bidirectionally, one circuit is powered on, the other circuit can output electric energy, meanwhile, the third output circuit can be charged unidirectionally, a charging protocol can be independently installed on the third output circuit, and the third output circuit and the first output / input circuit or the second output / input circuit do not influence each other.

Description

Technical field

[0001] The utility model relates to the technical field of charging, and in particular to a multi-port fast charging circuit and charging equipment. [Background Technology]

[0002] Nowadays, with the development of fast charging technology, people have higher and higher requirements for fast charging. People have fast charging needs for daily mobile phones, power banks and other electronic devices. However, for the fast charging of non-mobile devices such as power banks, due to different charging protocols, a separate fast charging charger is often required to achieve fast charging of the power bank. Traditional power bank chargers can often only charge the power bank alone. When the power bank is charging, if the mobile phone needs to be charged, it is necessary to take out the mobile phone charger separately to charge the mobile phone. [Utility Model Content]

[0003] In order to solve the above technical problems, the utility model provides a multi-port fast charging circuit and a charging device.

[0004] The solution to the technical problem of the present invention is to provide a multi-port fast charging circuit, including a first output / input circuit, a second output / input circuit, a third output circuit, a first interface and a second interface. The first output / input circuit is electrically connected to the second output / input circuit and the third output circuit at the same time, the second output / input circuit is electrically connected to the first output / input circuit and the third output circuit at the same time, the first interface is signal-connected to the first output / input circuit, and the second interface is signal-connected to the second output / input circuit.

[0005] Preferably, the multi-port fast charging circuit also includes a first protocol circuit, a second protocol circuit and a third protocol circuit. The first output / input circuit is electrically connected to the second output / input circuit and the third output circuit at the same time through the first protocol circuit, the second output / input circuit is electrically connected to the first output / input circuit and the third output circuit at the same time through the second protocol circuit, and the third output circuit is electrically connected to the first output / input circuit and the second output / input circuit at the same time through the third protocol circuit.

[0006] Preferably, the multi-port fast charging circuit further includes a voltage conversion circuit, and the third output circuit is electrically connected to the first output / input circuit and the second output / input circuit simultaneously through the third protocol circuit and the voltage conversion circuit in sequence.

[0007] Preferably, the voltage conversion circuit is a step-down circuit.

[0008] Preferably, a field effect transistor or a relay is electrically connected between the first output / input circuit and the first protocol circuit; and a field effect transistor or a relay is electrically connected between the second output / input circuit and the second protocol circuit.

[0009] Preferably, the interface type of the first output / input circuit and / or the second output / input circuit is a Micro interface, a USB interface or a Lighting interface.

[0010] Preferably, a pull-up capacitor is connected between the first protocol circuit and the first output / input circuit; and a pull-up capacitor is connected between the second protocol circuit and the second output / input circuit.

[0011] The utility model also provides a charging device, comprising a housing and a circuit board arranged in the housing, wherein the circuit board has the above-mentioned multi-port fast charging circuit.

[0012] Preferably, the shell includes a charging surface, the interface of the third output circuit is electrically connected to an electrical contact, and the electrical contact passes through the charging surface and is exposed; the interfaces of the first output / input circuit and the second output / input circuit are exposed on the side of the shell.

[0013] Preferably, a magnetic element is provided on the side of the charging surface close to the circuit board.

[0014] Compared with the existing technology, the multi-port fast charging circuit and charging device of the utility model have the following advantages:

[0015] 1. The multi-port fast charging circuit of the present invention includes a first output / input circuit, a second output / input circuit, a third output circuit, a first interface and a second interface. The first output / input circuit is electrically connected to the second output / input circuit and the third output circuit at the same time, and the second output / input circuit is electrically connected to the first output / input circuit and the third output circuit at the same time. The first interface is signal-connected to the first output / input circuit, and the second interface is signal-connected to the second output / input circuit. The first output / input circuit and the second output / input circuit can be charged bidirectionally. After receiving the electrical signal from the first interface or the second interface, one circuit is powered and the other circuit can output electrical energy. At the same time, the third output circuit can be unidirectionally charged. The third output circuit can be installed with a charging protocol separately and does not affect the first or second output / input circuit. In life application scenarios, this circuit can be used to charge a power bank and a mobile phone at the same time, and there will be no repulsion due to the different charging protocols of the mobile phone and the power bank.

[0016] 2. The multi-port fast charging circuit of the present invention also includes a first protocol circuit, a second protocol circuit and a third protocol circuit. The first output / input circuit is electrically connected to the second output / input circuit and the third output circuit at the same time through the first protocol circuit, the second output / input circuit is electrically connected to the first output / input circuit and the third output circuit at the same time through the second protocol circuit, and the third output circuit is electrically connected to the first output / input circuit and the second output / input circuit at the same time through the third protocol circuit. Through this design, fast charging of the three output interfaces can be achieved, making the charging experience more convenient and quick.

[0017] 3. The multi-port fast charging circuit of the present invention also includes a voltage conversion circuit. The third output circuit is electrically connected to the first output / input circuit and the second output / input circuit in sequence through the third protocol circuit and the voltage conversion circuit. The voltage conversion circuit is provided to enable the circuit to simultaneously adapt to charging devices with different charging requirements.

[0018] 4. The voltage conversion circuit of the multi-port fast charging circuit of the present invention is a step-down circuit. Setting the voltage conversion circuit as a step-down circuit can better adapt to charging environments that require low voltage.

[0019] 5. A field-effect transistor or relay is electrically connected between the first output / input circuit and the first protocol circuit of the multi-port fast charging circuit of the present invention; a field-effect transistor or relay is electrically connected between the second output / input circuit and the second protocol circuit. The arrangement of the field-effect transistor or relay makes the control of the first output / input circuit and the second output / input circuit simpler, more reliable, and safer.

[0020] 6. A pull-up capacitor is connected between the first protocol circuit and the first output / input circuit of the multi-port fast charging circuit of the utility model; a pull-up capacitor is connected between the second protocol circuit and the second output / input circuit; setting up the pull-up capacitor can improve the stability and reliability of the subsequent protocol circuit and prevent the pin from being left floating.

[0021] 7. The present invention also provides a charging device, including a shell and a circuit board arranged in the shell. The circuit of the circuit board is the above-mentioned multi-port fast charging circuit, which has the same beneficial effects as the above-mentioned multi-port fast charging circuit and will not be repeated here.

[0022] 8. The housing of the charging device of the present invention includes a charging surface, the interface of the third output circuit is electrically connected to an electrical contact, the electrical contact passes through the charging surface and is exposed, and the interfaces of the first output / input circuit and the second output / input circuit are exposed on the side of the housing; the provision of electrical contacts can realize plug-and-play charging of the device to be charged, which is convenient for users, and the two interfaces can realize power connection and charging of the charging device.

[0023] 9. The charging surface of the charging device of the present invention is provided with a magnetic attraction component on the side close to the circuit board; the provision of the magnetic attraction component can facilitate the positioning of the device to be charged and the electrical contacts, making it easy to use.

Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 This is a circuit structure module diagram of the multi-port fast charging circuit provided by the first embodiment of the present utility model.

[0026] Figure 2 This is a schematic diagram of the circuit principle of the first output / input circuit of the multi-port fast charging circuit provided by the first embodiment of the present utility model.

[0027] Figure 3 This is a schematic diagram of the circuit principle of the second output / input circuit of the multi-port fast charging circuit provided in the first embodiment of the present utility model.

[0028] Figure 4 This is a schematic diagram of the circuit principle of the first protocol circuit of the multi-port fast charging circuit provided by the first embodiment of the present utility model.

[0029] Figure 5 This is a schematic diagram of the circuit principle of the second protocol circuit of the multi-port fast charging circuit provided by the first embodiment of the present utility model.

[0030] Figure 6 This is a schematic diagram of the circuit principle of the voltage conversion circuit of the multi-port fast charging circuit provided by the first embodiment of the present utility model.

[0031] Figure 7 This is a schematic circuit diagram of the third protocol circuit and the third output circuit of the multi-port fast charging circuit provided in the first embodiment of the present utility model.

[0032] Figure 8 It is a schematic diagram of the three-dimensional structure of the charging device provided in the second embodiment of the present utility model.

[0033] Figure 9 It is an exploded view of the charging device provided by the second embodiment of the present utility model.

[0034] Description of the accompanying drawings:

[0035] 1. Multi-port fast charging circuit; 2. Charging equipment;

[0036] 10. First output / input circuit; 11. Second output / input circuit; 12. Third output circuit; 13. First protocol circuit; 14. Second protocol circuit; 15. Third protocol circuit; 16. Voltage conversion circuit; 17. Field effect transistor; 18. Pull-up capacitor; 20. Housing; 21. Circuit board;

[0037] 100, first interface; 110, second interface; 120, diode; 130, first protocol chip; 140, second protocol chip; 150, third protocol chip; 160, transformer chip; 170, MOS tube; 200, charging surface; 201, magnetic element; 210, electrical contact; 211, first interface; 212, second interface; 213, third interface; 214, light-emitting element. [Specific implementation method]

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0040] In this utility model, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the utility model and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0041] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0042] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0043] Please refer to Figure 1-Figure 7 The multi-port fast charging circuit 1 provided in the first embodiment of the present invention includes a first output / input circuit 10, a second output / input circuit 12, a third output circuit 12, a first interface 100 and a second interface 110. The first output / input circuit 10 is electrically connected to the second output / input circuit 11 and the third output circuit 12 at the same time, and the second output / input circuit 11 is electrically connected to the first output / input circuit 10 and the third output circuit 12 at the same time. The first interface 100 is signal-connected to the first output / input circuit 10, and the second interface 110 is signal-connected to the second output / input circuit 11. The first output / input circuit 10 and the second output / input circuit 11 are capable of bidirectional charging. After receiving an electrical signal from the first interface or the second interface, one circuit is powered and the other circuit can output electrical energy. At the same time, the third output circuit 12 can be unidirectionally charged. The third output circuit 12 can be independently installed with a charging protocol and does not affect the first or second output / input circuit. In daily application scenarios, this circuit can be used to charge a power bank and a mobile phone at the same time, without repulsion due to the different charging protocols of the mobile phone and the power bank.

[0044] Furthermore, the multi-port fast charging circuit 1 also includes a first protocol circuit 13, a second protocol circuit 14 and a third protocol circuit 15. The first output / input circuit 10 is electrically connected to the second output / input circuit 11 and the third output circuit 12 at the same time through the first protocol circuit 13, the second output / input circuit 11 is electrically connected to the first output / input circuit 10 and the third output circuit 12 at the same time through the second protocol circuit 14, and the third output circuit 12 is electrically connected to the first output / input circuit 10 and the second output / input circuit 11 at the same time through the third protocol circuit 15. Through this design, fast charging of the three output interfaces can be achieved, making the charging experience more convenient and quick.

[0045] Specifically, a diode 120 is further provided between the third output circuit 12 and the third protocol circuit 15 to ensure that the third output circuit 12 can only output electrical energy.

[0046] It is understandable that since the first output / input power 10 and the second output / input circuit 11 need to implement bidirectional charging, the first protocol chip 130 and the second protocol chip 140 need to be as similar as possible to ensure voltage stability.

[0047] Specifically, the model of the first protocol chip 130 and the second protocol chip 140 is IP2369. IP2369 supports charging of 2-6 battery strings, with a maximum charging and discharging rate of up to 45W, which can meet the fast charging needs of most small electronic devices; the model of the third protocol chip 150 is IP2723T or IP2726. This chip supports multiple fast charging protocols and is widely used.

[0048] Furthermore, the multi-port fast charging circuit 1 also includes a voltage conversion circuit 16, and the third output circuit 12 is electrically connected to the first output / input circuit 10 and the second output / input circuit 11 at the same time through the third protocol circuit 15 and the voltage conversion circuit 16 in sequence; the voltage conversion circuit 16 is provided to enable this circuit to simultaneously adapt to charging devices with different charging requirements.

[0049] Furthermore, the voltage conversion circuit 16 is a step-down circuit. Setting the voltage conversion circuit 16 as a step-down circuit can better adapt to a charging environment that requires a low voltage.

[0050] Specifically, the transformer chip 160 in the transformer circuit 16 is of model SP 1232EF, which is a synchronous buck regulator. It can be understood that the buck circuit reduces the voltage so that the third output circuit 12 can adapt to more low-voltage electrical appliances, and at the same time, it can provide a safer charging environment for specific devices to be charged, such as power banks.

[0051] Furthermore, a field effect transistor or a relay is electrically connected between the first output / input circuit 10 and the first protocol circuit 13; a field effect transistor or a relay is electrically connected between the second output / input circuit 11 and the second protocol circuit 14; the arrangement of the field effect transistor or relay makes the control method of the first output / input circuit 10 and the second output / input circuit 11 simpler, more reliable and safer.

[0052] Specifically, in the first embodiment, field effect transistors 17 are connected between the first output / input circuit 10 and the first protocol circuit 13 and between the second output / input circuit 11 and the second protocol circuit 14. The field effect transistors 17 are of model IP 15N03M.

[0053] Specifically, the field effect transistor 17 is further connected in parallel with a MOS transistor 170 , so that the circuit can accurately output the required electrical signal.

[0054] Furthermore, a pull-up capacitor 18 is connected between the first protocol circuit 13 and the first output / input circuit 10; a pull-up capacitor 18 is connected between the second protocol circuit 14 and the second output / input circuit 11; providing the pull-up capacitor 18 can improve the stability and reliability of subsequent protocol circuits and prevent pins from being left floating.

[0055] Specifically, some pull-up capacitors 18 are in a normally closed state in the circuit, so as to pass PD authentication.

[0056] Furthermore, the interface type of the first output / input circuit 10 and / or the second output / input circuit 11 is a Micro interface, a USB interface or a Lightning interface; specifically, in this embodiment, the interface type of the first output / input circuit 10 and the second output / input circuit 11 is a USBC interface, and the USBC interface can adapt to most mainstream fast charging protocols currently on the market.

[0057] Please refer to Figure 8-Figure 9 The second embodiment of the present invention further provides a charging device 2, including a housing 20 and a circuit board 21 disposed in the housing 20. The circuit of the circuit board 21 is the multi-port fast charging circuit 1 described in the first embodiment.

[0058] Furthermore, the shell 20 includes a charging surface 200, and the third interface 213 of the third output circuit is electrically connected to the electrical contact 210, the electrical contact 210 passes through the charging surface 200 and is exposed, and the first interface 211 and the second interface 212 to which the first output / input circuit and the second output / input circuit are respectively electrically connected are exposed on the side of the shell 20; the provision of the electrical contact 210 can realize plug-and-play charging of the device to be charged, which is convenient for users to use, and the two interfaces can realize the connection and charging of the charging device 2.

[0059] Furthermore, a magnetic member 201 is provided on one side of the charging surface 200 close to the circuit board 21 ; the provision of the magnetic member 201 can facilitate the positioning of the device to be charged and the electrical contacts 210 , making it easy to use.

[0060] Specifically, the circuit board 21 is also electrically connected to a light-emitting element 214 for displaying the charging status of the charging device 2 or the device to be charged.

[0061] It is understandable that the above-mentioned device to be charged can be any terminal device such as PC, smart phone, tablet computer, e-book reader, PDA (Persona Digital Assistant), POS (Point of Sale), car computer, wearable device, player, portable computer, etc.

[0062] Compared with the existing technology, the multi-port fast charging circuit and charging device of the utility model have the following advantages:

[0063] 1. The multi-port fast charging circuit of the present invention includes a first output / input circuit, a second output / input circuit, a third output circuit, a first interface and a second interface. The first output / input circuit is electrically connected to the second output / input circuit and the third output circuit at the same time, and the second output / input circuit is electrically connected to the first output / input circuit and the third output circuit at the same time. The first interface is signal-connected to the first output / input circuit, and the second interface is signal-connected to the second output / input circuit. The first output / input circuit and the second output / input circuit can be charged bidirectionally. After receiving the electrical signal from the first interface or the second interface, one circuit is powered and the other circuit can output electrical energy. At the same time, the third output circuit can be unidirectionally charged. The third output circuit can be installed with a charging protocol separately and does not affect the first or second output / input circuit. In life application scenarios, this circuit can be used to charge a power bank and a mobile phone at the same time, and there will be no repulsion due to the different charging protocols of the mobile phone and the power bank.

[0064] 2. The multi-port fast charging circuit of the present invention also includes a first protocol circuit, a second protocol circuit and a third protocol circuit. The first output / input circuit is electrically connected to the second output / input circuit and the third output circuit at the same time through the first protocol circuit, the second output / input circuit is electrically connected to the first output / input circuit and the third output circuit at the same time through the second protocol circuit, and the third output circuit is electrically connected to the first output / input circuit and the second output / input circuit at the same time through the third protocol circuit. Through this design, fast charging of the three output interfaces can be achieved, making the charging experience more convenient and quick.

[0065] 3. The multi-port fast charging circuit of the present invention also includes a voltage conversion circuit. The third output circuit is electrically connected to the first output / input circuit and the second output / input circuit in sequence through the third protocol circuit and the voltage conversion circuit. The voltage conversion circuit is provided to enable the circuit to simultaneously adapt to charging devices with different charging requirements.

[0066] 4. The voltage conversion circuit of the multi-port fast charging circuit of the present invention is a step-down circuit. Setting the voltage conversion circuit as a step-down circuit can better adapt to charging environments that require low voltage.

[0067] 5. A field-effect transistor or relay is electrically connected between the first output / input circuit and the first protocol circuit of the multi-port fast charging circuit of the present invention; a field-effect transistor or relay is electrically connected between the second output / input circuit and the second protocol circuit. The arrangement of the field-effect transistor or relay makes the control of the first output / input circuit and the second output / input circuit simpler, more reliable, and safer.

[0068] 6. A pull-up capacitor is connected between the first protocol circuit and the first output / input circuit of the multi-port fast charging circuit of the utility model; a pull-up capacitor is connected between the second protocol circuit and the second output / input circuit; setting up the pull-up capacitor can improve the stability and reliability of the subsequent protocol circuit and prevent the pin from being left floating.

[0069] 7. The present invention also provides a charging device, including a shell and a circuit board arranged in the shell. The circuit of the circuit board is the above-mentioned multi-port fast charging circuit, which has the same beneficial effects as the above-mentioned multi-port fast charging circuit and will not be repeated here.

[0070] 8. The housing of the charging device of the present invention includes a charging surface, the interface of the third output circuit is electrically connected to an electrical contact, the electrical contact passes through the charging surface and is exposed, and the interfaces of the first output / input circuit and the second output / input circuit are exposed on the side of the housing; the provision of electrical contacts can realize plug-and-play charging of the device to be charged, which is convenient for users, and the two interfaces can realize power connection and charging of the charging device.

[0071] 9. The charging surface of the charging device of the present invention is provided with a magnetic attraction component on the side close to the circuit board; the provision of the magnetic attraction component can facilitate the positioning of the device to be charged and the electrical contacts, making it easy to use.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-port fast charging circuit, characterized by: The multi-port fast charging circuit includes a first output / input circuit, a second output / input circuit, a third output circuit, a first interface and a second interface. The first output / input circuit is electrically connected to the second output / input circuit and the third output circuit at the same time, and the second output / input circuit is electrically connected to the first output / input circuit and the third output circuit at the same time. The first interface is signal-connected to the first output / input circuit, and the second interface is signal-connected to the second output / input circuit.

2. The multi-port fast charging circuit according to claim 1, wherein: The multi-port fast charging circuit also includes a first protocol circuit, a second protocol circuit and a third protocol circuit. The first output / input circuit is electrically connected to the second output / input circuit and the third output circuit at the same time through the first protocol circuit. The second output / input circuit is electrically connected to the first output / input circuit and the third output circuit at the same time through the second protocol circuit. The third output circuit is electrically connected to the first output / input circuit and the second output / input circuit at the same time through the third protocol circuit.

3. The multi-port fast charging circuit according to claim 2, wherein: The multi-port fast charging circuit also includes a voltage conversion circuit, and the third output circuit is electrically connected to the first output / input circuit and the second output / input circuit simultaneously through the third protocol circuit and the voltage conversion circuit in sequence.

4. The multi-port fast charging circuit according to claim 3, wherein: The voltage conversion circuit is a step-down circuit.

5. The multi-port fast charging circuit according to claim 2, wherein: A field effect transistor or a relay is electrically connected between the first output / input circuit and the first protocol circuit; a field effect transistor or a relay is electrically connected between the second output / input circuit and the second protocol circuit.

6. The multi-port fast charging circuit according to claim 1, wherein: The interface type of the first output / input circuit and / or the second output / input circuit is a Micro interface, a USB interface or a Lighting interface.

7. The multi-port fast charging circuit according to claim 2, wherein: A pull-up capacitor is connected between the first protocol circuit and the first output / input circuit; and a pull-up capacitor is connected between the second protocol circuit and the second output / input circuit.

8. A charging device, characterized in that: It comprises a shell and a circuit board arranged in the shell, and the circuit board has a multi-port fast charging circuit as described in any one of claims 1 to 7.

9. The charging device according to claim 8, wherein: The shell includes a charging surface, the interface of the third output circuit is electrically connected to an electrical contact, and the electrical contact passes through the charging surface and is exposed; the interfaces of the first output / input circuit and the second output / input circuit are exposed on the side of the shell.

10. The charging device according to claim 9, wherein: A magnetic attraction component is provided on a side of the charging surface close to the circuit board.

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