Charger

Abstract

The utility model relates to the field of charging accessories, in particular to a charger. The USB BA female seat comprises nine fourth group of pins, and the nine fourth group of pins are respectively a fourth GND pin, a fourth VBUS pin, a fourth D + pin, a fourth D-pin and five fourth type of pins; and a first fast charging management circuit and a second fast charging management circuit, wherein the first fast charging management circuit and the second fast charging management circuit are connected with the USBA female seat. According to the utility model, the charger is connected with external equipment through more than two interfaces, the charger can independently and rapidly charge the external equipment through a single interface, and the charger can cooperatively and rapidly charge a plurality of external equipment through a plurality of interfaces.

Description

Technical Field

[0001] The utility model relates to the field of charging accessories, in particular to a charger. Background Art

[0002] A one-to-many data cable means that one data cable can connect multiple devices or interfaces for data transmission or charging. This type of data cable usually has a master interface (usually USB-A) and multiple slave interfaces (such as Type-C, Micro-USB or Lightning).

[0003] Using a one-to-many data cable, you can easily connect multiple devices to a main device or power source, reducing the clutter of cables and the number of connectors. This data cable can be used to charge multiple devices at the same time or transfer data between multiple devices.

[0004] To achieve fast charging, the following conditions are usually required: the charger itself must support fast charging technology, the charger and charging device need to support the same fast charging protocol in order to negotiate and adjust charging parameters, and the device being charged (such as mobile phones, tablets, etc.) itself also needs to support the corresponding fast charging technology and protocol.

[0005] However, the existing one-to-many data cables are still prone to errors when multiple devices are fast-charging simultaneously. The main reason is that cables or protocol chips are reused, resulting in charging anomalies and causing fast charging failure. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a charger for the above-mentioned defects of the prior art, so as to solve the problem of fast charging failure caused by abnormal charging.

[0007] The technical solution adopted by the utility model to solve the technical problem is: to provide a charger, including:

[0008] A USBA female socket matched with the USBA male plug of the one-to-many data cable, the USBA female socket comprising nine fourth group pins, wherein the nine fourth group pins are respectively a fourth GND pin, a fourth VBUS pin, a fourth D+ pin, a fourth D- pin and five fourth category pins;

[0009] A first fast charge management circuit and a second fast charge management circuit, wherein the first fast charge management circuit and the second fast charge management circuit are connected to the USBA female socket; wherein

[0010] The fifth CC terminal of the first fast charge management circuit is connected to one of the fourth D+ pin or the fourth D- pin, and the sixth CC terminal of the second fast charge management circuit is connected to the other of the fourth D+ pin or the fourth D- pin; the fourth GND pin is connected to ground;

[0011] Four of the five fourth-category pins are respectively connected to the fifth power output terminal of the first fast charging management circuit, the sixth power output terminal of the second fast charging management circuit, the fifth DP pin of the first fast charging management circuit, and the fifth DM pin of the first fast charging management circuit.

[0012] Among them, a preferred solution is: the charger also includes a third charging management circuit, and the seventh power output terminal of the third charging management circuit is connected to the fourth VBUS pin.

[0013] Among them, a preferred solution is: the remaining one pin of the five fourth-category pins is also connected to the fifth power output terminal of the first fast charging management circuit.

[0014] Among them, the preferred solution is: the fifth power output terminal of the first fast charging management circuit is respectively connected to the SSTX- pin and the second DRAIN pin of the USBA socket.

[0015] Among them, the preferred solution is: the fifth DP pin and the fifth DM pin of the first fast charging management circuit are respectively connected to the SSTX+ pin and the SSRX- pin of the USBA socket.

[0016] Among them, the preferred solution is: the sixth power output terminal of the second fast charging management circuit is connected to the SSRX+ pin of the USBA socket.

[0017] Among them, the preferred solution is that the USBA female socket is one of USB3.0, USB3.1, USB3.2 and USB4.0.

[0018] Among them, the preferred solution is: the charger includes a first power input terminal, the first fast charging management circuit includes a first step-down circuit and a first fast charging protocol circuit, the second fast charging management circuit includes a second step-down circuit and a second fast charging protocol circuit, the first step-down circuit is respectively connected to the first power input terminal and the first fast charging protocol circuit, so that the electric energy of the first power input terminal is stepped down and passed through, and output from the second interface under the control of the first fast charging protocol circuit; the second step-down circuit is respectively connected to the first power input terminal and the second fast charging protocol circuit, so that the electric energy of the first power input terminal is stepped down and passed through, and output from the third interface under the control of the second fast charging protocol circuit.

[0019] The beneficial effect of the utility model is that, compared with the prior art, the utility model can realize that the charger is connected to an external device through more than two interfaces, and can also realize that the charger can fast charge an external device separately through a single interface, and can also realize that the charger can fast charge multiple external devices collaboratively through multiple interfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 This is a system block diagram of a charger with a USBA female socket of the utility model;

[0022] Figure 2 yes Figure 1 System block diagram of the fast charge management circuit of the charger;

[0023] Figure 3 yes Figure 2 System block diagram for adding new connection methods;

[0024] Figure 4 yes Figure 2 Add the system block diagram of the third interface;

[0025] Figure 5 yes Figure 2 System block diagram of a specific fast charge management circuit;

[0026] Figure 6 It is a circuit diagram of the fourth fast charging protocol circuit of the utility model;

[0027] Figure 7 It is a circuit diagram of the utility model and a fourth step-down circuit. DETAILED DESCRIPTION

[0028] Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0029] like Figures 1 to 5 As shown, the utility model provides a preferred embodiment of a charger 2000.

[0030] A charger 2000, comprising a USBA female socket 2100 matched with the USBA male plug of the one-to-many data cable, the USBA female socket 2100 comprising nine fourth group pins, the nine fourth group pins being respectively a fourth GND pin 211, a fourth VBUS pin 214, a fourth D+ pin 213, a fourth D- pin 214 and five fourth category pins; a first fast charge management circuit 2200 and a second fast charge management circuit 2300, the first fast charge management circuit 2200 and the second fast charge management circuit 2300 being connected to the USBA female socket 2100; wherein the first fast charge management circuit 2200 The fifth CC terminal 221 is connected to one of the fourth D+ pin 213 or the fourth D- pin 214, and the sixth CC terminal of the second fast charging management circuit 2300 is connected to the other of the fourth D+ pin 213 or the fourth D- pin 214; the fourth GND pin 211 is grounded; four of the five fourth-category pins are respectively connected to the fifth power output terminal 224 of the first fast charging management circuit 2200, the sixth power output terminal 232 of the second fast charging management circuit 2300, the fifth DP pin 223 of the first fast charging management circuit 2200 and the fifth DM pin 222 of the first fast charging management circuit 2200.

[0031] Specifically, the charger 2000 uses a USBA female socket 2100 that is paired with a USBA male plug of a one-to-many data cable. The USBA female socket 2100 includes nine fourth group pins, specifically:

[0032] The fourth GND pin 211 is connected to the ground and provides grounding for the circuit.

[0033] The fourth VBUS pin 214 is used to transmit power supply and provide stable voltage and power. It can be applied to the one-to-many data line of the utility model to provide stable voltage and power for the fourth interface 1400, and can also charge a conventional data line with a USBA male connector.

[0034] The fourth D+ pin 213 and the fourth D- pin 214 are used to transmit USB data signals. When the USBA female socket 2100 is inserted into the USBA male connector of the one-to-many data cable of the utility model, the fourth D+ pin 213 and the fourth D- pin 214 are respectively connected to the first D+ pin 12 and the first D- pin 13 of the USBA male connector, thereby connecting to the second CC pin 22 of the second interface 1200 and the third CC pin 32 of the third interface 1300.

[0035] Five fourth-category pins: When the USBA female socket 2100 is inserted into the USBA male connector of the one-to-many data cable of the present invention, it is connected to the five first-category pins of the USBA male connector to achieve power supply, data transmission, etc.

[0036] In this embodiment, the first fast charge management circuit 2200 is connected to the fourth D+ pin 213 or the fourth D- pin 214 through the fifth CC terminal 221, so as to detect whether the charger 2000 is inserted into the device and the connection status, and detect the insertion and removal events of the USB connection second interface 1200 to determine whether fast charging is required. Furthermore, the first fast charge management circuit 2200 also communicates with the connected device to identify the charging requirements and compatibility of the device, which involves sending specific commands or protocols to handshake and communicate with the device. Based on the communication and identification results with the device, the fast charge management circuit will determine the applicable charging protocol, which may be Apple's proprietary fast charge protocol or other standard fast charge protocols, such as USB Power Delivery (USB PD), which is specifically achieved by connecting the fifth DP pin 223 of the first fast charge management circuit 2200 and the fifth DM pin 222 of the first fast charge management circuit 2200 to the second DP pin 23 and the second DM pin 24 of the second interface 1200. Then, through the same communication method, the charging parameters are configured. According to the determined charging protocol, the first fast charging management circuit 2200 will configure the charging parameters, such as voltage and current levels. Once the charging parameters are configured, the first fast charging management circuit 2200 will control the power output to provide appropriate voltage and current for fast charging of the device. At the same time, the first fast charging management circuit 2200 monitors parameters such as current, voltage and temperature during the charging process, and adjusts and protects as needed. When the device reaches the conditions for charging completion, the first fast charging management circuit 2200 will stop charging and disconnect the power output.

[0037] The fast charging method of the second fast charging management circuit 2300 is basically the same as that of the first fast charging management circuit 2200, but the second fast charging management circuit 2300 communicates with the fourth D+ pin 213 or the fourth D- pin 214 through the sixth CC terminal, and the relevant fast charging communication can only be realized through the sixth CC terminal. In addition, when the second interface 1200 or the third interface 1300 corresponding to the first fast charging management circuit 2200 or the second fast charging management circuit 2300 is connected to the device, if it is detected that another interface is connected to the device, collaborative fast charging is started. Collaborative fast charging means that the second interface 1200 and the third interface 1300 corresponding to the first fast charging management circuit 2200 and the second fast charging management circuit 2300 are connected to the device at the same time. At this time, the first fast charging management circuit 2200 is reduced from the original first fast charging power to the second fast charging power, and the second fast charging management circuit 2300 is reduced from the original third fast charging power to the fourth fast charging power, so that the second fast charging power and the fourth fast charging power meet or approach the maximum fast charging power of the charger 2000.

[0038] For example, the fast charging of a single interface is 100W, while the fast charging of two interfaces is 65W and 30W. Of course, it can also be other values. The remaining fourth interface 1400 has an output power of 5W, that is, an output power of 5V 1A.

[0039] In this embodiment, the remaining one of the five fourth-category pins is also connected to the fifth power output terminal 224 of the first fast charging management circuit 2200, which can provide greater current transmission capability, which is beneficial to higher power charging or charging needs of high-power devices.

[0040] Further, the fifth power output terminal 224 of the first fast charge management circuit 2200 is respectively connected to the SSTX- pin 218 and the second DRAIN pin 219 of the USBA socket 2100. The fifth DP pin 223 and the fifth DM pin 222 of the first fast charge management circuit 2200 are respectively connected to the SSTX+ pin 217 and the SSRX- pin 216 of the USBA socket 2100. The sixth power output terminal 232 of the second fast charge management circuit 2300 is connected to the SSRX+ pin 215 of the USBA socket 2100. Of course, this connection method is not the only one, and other paired connections can also be used. This connection method brings the following benefits: increased current transmission capability, by connecting the fifth power output terminal 224 with the SSTX- pin 218 and the second DRAIN pin 219, a greater current transmission capability can be provided, which is beneficial to higher power charging or charging requirements of high-power devices; support for data transmission, by connecting the fifth DP pin 223 and the fifth DM pin 222 of the first fast charge management circuit 2200 with the SSTX+ pin 217 and the SSRX- pin 216 of the USBA female socket 2100 respectively, efficient data transmission can be achieved; the current connected by the sixth power output terminal 232 with the SSRX+ pin 215 of the USBA female socket 2100 of the USBA male connector is also guaranteed.

[0041] In this embodiment, the USBA female socket 2100 is one of USB3.0, USB3.1, USB3.2 and USB4.0.

[0042] In this embodiment, and with reference to Figure 5The charger 2000 includes a first power input terminal 2500, the first fast charge management circuit 2200 includes a first step-down circuit 2220 and a first fast charge protocol circuit 2210, and the second fast charge management circuit 2300 includes a second step-down circuit 2320 and a second fast charge protocol circuit 2310. The first step-down circuit 2220 is connected to the first power input terminal 2500 and the first fast charge protocol circuit 2210 respectively, so that the electric energy of the first power input terminal 2500 is stepped down and output from the second interface 1200 under the control of the first fast charge protocol circuit 2210; the second step-down circuit 2320 is connected to the first power input terminal 2500 and the second fast charge protocol circuit 2310 respectively, so that the electric energy of the first power input terminal 2500 is stepped down and output from the third interface 1300 under the control of the second fast charge protocol circuit 2310.

[0043] Specifically, the first step-down circuit 2220 is responsible for reducing the high voltage of the input power supply of the first power input terminal 2500 to a voltage level suitable for device charging, that is, it can meet the voltage requirements of single fast charging, dual fast charging, and ordinary charging. The first step-down circuit 2220 adopts switching power supply technology, which can efficiently convert electrical energy and provide stable output voltage and current. The first fast charging protocol circuit 2210 includes a first fast charging protocol chip for supporting specific fast charging protocols, such as USB Power Delivery (USB PD), Qualcomm Quick Charge, etc. The first fast charging protocol chip of the first fast charging protocol circuit 2210 has built-in corresponding protocol parsing and communication functions, which can negotiate and communicate with the connected device to determine the appropriate charging parameters and power level. The first fast charging management circuit 2200 also includes a series of supporting circuit elements and functional modules to realize the control, protection and monitoring of the charging process. The supporting peripheral circuits include over-current protection, over-temperature protection, voltage and current monitoring, feedback loops, etc. to ensure the safety and stability of the charging process.

[0044] The working principles of the second buck circuit 2320 and the second fast charging protocol circuit 2310 are similar to those of the first buck circuit 2220 and the first fast charging protocol circuit 2210 and are not described again.

[0045] Among them, the first fast charge protocol circuit 2210 and the second fast charge protocol circuit 2310 are responsible for communicating with the connected device, negotiating charging parameters and power levels, and sending specific communication protocol messages, such as USB PD messages or fast charge protocol messages, to handshake and negotiate with the device. In addition, the negotiated charging parameters and power levels are transmitted to the first buck circuit 2220 and the second buck circuit 2320 through control signals, and these control signals may include output voltage, output current, switching frequency and other related parameters. The first buck circuit 2220 and the second buck circuit 2320 adjust according to the received control signal to achieve the specified output voltage and current, and adjust the switching frequency, duty cycle and other parameters according to the requirements of the control signal to provide the required output voltage level. Through the above-mentioned control feedback method, the fast charge protocol circuit and the buck circuit are coordinated. The first fast charge protocol circuit 2210 and the second fast charge protocol circuit 2310 are responsible for communicating and negotiating with the device, determining the appropriate charging parameters, and then transmitting these parameters to the first buck circuit 2220 and the second buck circuit 2320 through control signals, so that they can adjust the output voltage and current as required.

[0046] At the same time, the first fast charging protocol circuit 2210 and the second fast charging protocol circuit 2310 also communicate with each other. When one of them works alone, the maximum achievable fast charging power is selected. If the two work at the same time, the first fast charging protocol circuit 2210 and the second fast charging protocol circuit 2310 coordinate with each other to reduce the charging power, and the total power of the two reaches the maximum output power.

[0047] In this embodiment, reference Figure 6 and Figure 7Regarding the first fast charging protocol circuit 2210 and the first step-down circuit 2220, the first step-down circuit 2220 includes a first step-down chip, and the first fast charging protocol circuit 2210 includes a first fast charging protocol chip. The VIN pin of the first step-down chip is connected to the first power input terminal 2500, and the voltage is output from the VOUT pin of the first step-down chip after stepping down. A MOS tube Q1 is connected in series between the VOUT pin of the first step-down chip and one or two fourth-category pins of the USBA socket 2100. The gate of the MOS tube Q1 is controlled by the first fast charging protocol chip, thereby controlling the on and off of the MOS tube Q1, that is, controlling the on and off between the VOUT pin of the first step-down chip and one or two fourth-category pins of the USBA socket 2100. In addition, the VOUT pin of the first step-down chip is also connected to the VIN pin of the first fast charging protocol chip, the VOUT pin of the first fast charging protocol chip is connected to one or two fourth-category pins of the USBA socket 2100, the feedback pin of the first fast charging protocol chip is connected to the feedback pin of the first step-down chip, the DP pin and DM pin of the first fast charging protocol chip are respectively connected to the two fourth-category pins of the USBA socket 2100, and the CC pin of the first fast charging protocol chip is connected to the fourth D+ pin 213 or the fourth D- pin 214 of the USBA socket 2100.

[0048] Regarding the second fast charging protocol circuit 2310 and the second step-down circuit 2320, the second step-down circuit 2320 includes a second step-down chip, and the second fast charging protocol circuit 2310 includes a second fast charging protocol chip. The second fast charging protocol chip is communicatively connected to the first fast charging protocol chip through CSN and CSP, and the connection method between the second step-down chip and the second fast charging protocol chip is similar to that between the first step-down chip and the first fast charging protocol chip, for example, MOS tube Q2, the CC pin of the second fast charging protocol chip is connected to the fourth D+ pin 213 or the fourth D- pin 214 of the USBA socket 2100.

[0049] like Figure 4 As shown, the utility model provides a preferred embodiment of the third charging management circuit 2400.

[0050] The charger 2000 further includes a third charging management circuit 2400, and the seventh power output terminal 241 of the third charging management circuit 2400 is connected to the fourth VBUS pin 214. The third charging management circuit 2400 includes a third buck circuit to achieve stable output of power. The third buck circuit includes a third buck chip. The VIN pin of the third buck chip is connected to the first power input terminal 2500, and the VOUT pin of the third buck chip is connected to the fourth VBUS pin 214 of the USBA socket 2100.

[0051] Among them, the VOUT pins of the first fast charging protocol circuit 2210 , the second fast charging protocol circuit 2310 and the third fast charging protocol circuit are the fifth power output terminal 224 , the sixth power output terminal 232 and the seventh power output terminal 241 .

[0052] The above is only the best embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made within the scope of the patent application of the present invention are covered by the present invention.

Claims

1. A charger, characterized in that: include: A USBA female socket, the USBA female socket comprising nine fourth group pins, wherein the nine fourth group pins are respectively a fourth GND pin, a fourth VBUS pin, a fourth D+ pin, a fourth D- pin and five fourth category pins; A first fast charge management circuit and a second fast charge management circuit, wherein the first fast charge management circuit and the second fast charge management circuit are connected to the USBA female socket; wherein The fifth CC terminal of the first fast charge management circuit is connected to one of the fourth D+ pin or the fourth D- pin, and the sixth CC terminal of the second fast charge management circuit is connected to the other of the fourth D+ pin or the fourth D- pin; the fourth GND pin is connected to ground; Four of the five fourth-category pins are respectively connected to the fifth power output terminal of the first fast charging management circuit, the sixth power output terminal of the second fast charging management circuit, the fifth DP pin of the first fast charging management circuit, and the fifth DM pin of the first fast charging management circuit.

2. The charger according to claim 1, characterized in that: The charger further includes a third charging management circuit, and a seventh power output terminal of the third charging management circuit is connected to a fourth VBUS pin.

3. The charger according to claim 1, characterized in that: The remaining one of the five fourth-category pins is also connected to the fifth power output terminal of the first fast charging management circuit.

4. The charger according to claim 3, characterized in that: The fifth power output terminal of the first fast charge management circuit is respectively connected to the SSTX- pin and the second DRAIN pin of the USBA socket.

5. The charger according to claim 4, characterized in that: The fifth DP pin and the fifth DM pin of the first fast charging management circuit are respectively connected to the SSTX+ pin and the SSRX- pin of the USBA socket.

6. The charger according to any one of claims 1 to 5, characterized in that: The sixth power output terminal of the second fast charging management circuit is connected to the SSRX+ pin of the USBA socket.

7. The charger according to claim 1, characterized in that: The USBA female socket is one of USB3.0, USB3.1, USB3.2 and USB4.

0.

8. The charger according to claim 1, characterized in that: The charger includes a first power input terminal, the first fast charging management circuit includes a first step-down circuit and a first fast charging protocol circuit, the second fast charging management circuit includes a second step-down circuit and a second fast charging protocol circuit, the first step-down circuit is respectively connected to the first power input terminal and the first fast charging protocol circuit, so that the electric energy of the first power input terminal is stepped down and then output from the second interface under the control of the first fast charging protocol circuit; the second step-down circuit is respectively connected to the first power input terminal and the second fast charging protocol circuit, so that the electric energy of the first power input terminal is stepped down and then output from the third interface under the control of the second fast charging protocol circuit.

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