Multi-port PD fast charging device with dynamic power distribution function

Abstract

The utility model discloses a multi-port PD fast charging device with a dynamic power distribution function. The multi-port PD fast charging device comprises a power supply module, a conversion module, output ports, a protocol module and a power distribution module, the protocol module is connected with the output port to judge the access of the charging equipment, establish a handshake protocol and detect the current output power of the port, the protocol module is connected with the power distribution module to send an access signal and the current output power information of the port, and the power distribution module judges the access number of the charging equipment and sends the access signal to the charging equipment; the conversion module is controlled by the protocol module to provide full-load output voltage, or the output power of each output port is distributed according to the access sequence of the charging equipment in combination with the current output power of the port, and the output voltage provided by the conversion module is adjusted by the protocol module; the multi-port PD fast charging device can dynamically distribute the maximum charging power of each charging port according to the actual charging power of each charging port so as to shorten the charging time during multi-port charging.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-port PD fast charging, and in particular to a multi-port PD fast charging device with a dynamic power allocation function. Background Art

[0002] Currently, existing multi-port PD fast charging circuits generally have multiple PD protocol circuits and support intelligent power distribution. The PD protocol circuit and the charging device plugged into the charger complete a handshake through the charging protocol to provide the power required for charging. The multi-port PD fast charging circuit can allocate a fixed charging power to each PD protocol circuit according to the number of charging devices.

[0003] For example, a PD fast charging circuit with a total power of 65W and dual C output ports will provide a maximum charging power of 65W to the corresponding charging port when one charging port C1 is used alone. When the other charging port C2 is connected to a charging device, the PD fast charging circuit will intelligently allocate the maximum power of charging port C1 to 45W and the maximum power of charging port C2 to 20W, or the maximum power of charging port C1 to 30W and the maximum power of charging port C2 to 30W (multiple combinations, no more examples). After each PD protocol circuit shakes hands with the charging device at this charging power, the power value of the charging port will not change until all charging devices are charged.

[0004] Regardless of the fixed power distribution mode, the charging power supported by the inserted charging device may be greater than the maximum charging power provided by the charging port during the handshake agreement. However, the PD fast charging circuit can only provide a fixed charging power to each charging port, and the actual charging power of the charging device is not always full power. When the battery of the device is close to full, the charging power will be smaller, while the corresponding charging port still provides the set large charging power, resulting in other charging ports unable to charge at the larger charging power they can support. As a result, when the multi-port PD fast charging circuit is connected to multiple charging devices, the charging time is greatly extended, the charging speed is slow, and the experience is very poor. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-port PD fast charging device with a dynamic power allocation function, which can dynamically allocate the maximum charging power of each charging port according to the actual charging power of each charging port, so as to shorten the charging time during multi-port charging and effectively improve the user experience.

[0006] To achieve the above objectives, the present invention discloses a multi-port PD fast charging device with dynamic power allocation function, which includes:

[0007] A power supply module, multiple conversion modules, multiple output ports, multiple protocol modules and a power distribution module;

[0008] The input ends of the multiple conversion modules are respectively connected to the output ends of the power supply module, and the output ends of the multiple conversion modules are correspondingly connected to the input ends of the multiple output ports. The conversion module is used to convert the voltage output by the power supply module and output it to the corresponding output port;

[0009] The plurality of protocol modules are connected to the plurality of output ports, and the protocol modules are used to determine the access of the charging device through the corresponding output port, establish a handshake protocol with the charging device, and detect the current actual output power of the corresponding output port;

[0010] A plurality of the protocol modules are connected to the power distribution module, and the protocol modules are used to send an access signal and current actual output power information of the corresponding output port to the power distribution module;

[0011] When a single output port is connected to a charging device, the power distribution module is used to send distribution information to the corresponding protocol module according to the access signal sent by the corresponding protocol module. Multiple protocol modules are correspondingly connected to multiple conversion modules, and the corresponding protocol module is used to control the corresponding conversion module to provide a full-load output voltage to the corresponding output port;

[0012] When multiple output ports are connected to charging devices, the power allocation module is used to define the order in which the corresponding input ports are connected to the charging devices according to the access signal sent by the corresponding protocol module, and to allocate the output power of each output port according to the defined access order and the current actual output power information of the corresponding output port, and to send the allocation result to the corresponding protocol module. Multiple protocol modules are correspondingly connected to multiple conversion modules, and the corresponding protocol module is used to adjust the output voltage provided by the corresponding conversion module to the corresponding output port according to the received allocation result.

[0013] Optionally, each of the protocol modules is provided with a PD protocol chip, the power distribution module is an MCU chip, the PD protocol chip is provided with a GPIO4 pin and a GPIO5 pin, and the GPIO4 pin and the GPIO5 pin are respectively connected to the MCU chip.

[0014] Optionally, each of the protocol modules is provided with a PD protocol chip and a detection resistor, the first end of the detection resistor is connected to the corresponding output port, the second end of the detection resistor is grounded, and the PD protocol chip is provided with a CS+ pin and a CS- pin, the CS+ pin is connected to the first end of the detection resistor, and the CS- pin is connected to the second end of the detection resistor.

[0015] Optionally, a MOS tube is provided between the output end of each conversion module and the input end of the corresponding output port, and each protocol module is provided with a PD protocol chip, and the PD protocol chip is provided with a GATE pin, and the GATE pin is connected to the control end of the MOS tube.

[0016] Optionally, each of the conversion modules includes a DCDC circuit and a PNP-type transistor, the DCDC circuit includes an FB pin, a VDC-IN pin, and a VDC-OUT pin, the corresponding protocol module is connected to the control end of the corresponding transistor, the FB pin is connected to the output end of the corresponding transistor, the VDC-IN pin is connected to the power supply module, and the VDC-OUT pin is connected to the input end of the corresponding transistor and the corresponding output port.

[0017] Optionally, each of the protocol modules is provided with a PD protocol chip, the PD protocol chip is provided with a CC1 pin and a CC2 pin, each of the output ports is provided with an A5 pin and a B5 pin, the CC1 pin is connected to the corresponding A5 pin, and the CC2 pin is connected to the corresponding B5 pin.

[0018] The utility model is provided with a power distribution module and multiple protocol modules to dynamically control the output voltage provided by the conversion module to the corresponding output port, thereby realizing dynamic distribution of the maximum charging power of each charging port. The conversion module is connected to the power supply module and the output port to convert the voltage output by the power supply module and output it to the output port. The protocol module is connected to the output port to determine the access of the charging device through the output port, establish a handshake protocol with the charging device and detect the current actual output power of the output port. The protocol module is connected to the power distribution module to send an access signal and the current actual output power information of the output port to it. The power distribution module determines whether a single charging device or multiple charging devices are connected according to the access signal, and controls the conversion module to provide a full-load output voltage to the output port through the protocol module, or distributes the output power of each output port according to the order in which the charging devices are connected and the current actual output power of the output port. The output voltage provided by the conversion module to the output port is adjusted through the protocol module, thereby realizing dynamic distribution of the maximum charging power of each charging port according to the actual charging power of each charging port, thereby shortening the charging time when charging multiple ports, and effectively improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic block diagram of a multi-port PD fast charging device with dynamic power allocation function according to an embodiment of the present invention.

[0020] Figure 2This is a circuit diagram of a multi-port PD fast charging device with dynamic power allocation function according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the embodiments and the accompanying drawings.

[0022] See also Figure 1 and Figure 2 The utility model discloses a multi-port PD fast charging device with dynamic power allocation function, which includes:

[0023] A power supply module 1, multiple conversion modules 2, multiple output ports 3, multiple protocol modules 4 and a power distribution module 5;

[0024] Specifically, in this embodiment, Figure 1 As shown in the example, the multi-port PD fast charging device is provided with two conversion modules 2, two output ports 3 and two protocol modules 4, and the total power output of the fast charging device is 65W. A power distribution module 5 is added between the two protocol modules 4 to collaboratively realize the power distribution of the two output ports 3, but it is not limited to this. In some embodiments, the fast charging device can also output all power segments of PD fast charging, and set N conversion modules 2, N output ports 3 and N protocol modules 4 to realize dynamic distribution of power of N output ports 3 through communication coordination between N protocol modules 4 and the power distribution module 5, where N is an integer greater than 2.

[0025] The input ends of the multiple conversion modules 2 are respectively connected to the output ends of the power supply module 1, and the output ends of the multiple conversion modules 2 are correspondingly connected to the input ends of the multiple output ports 3. The conversion modules 2 are used to convert the voltage output by the power supply module 1 and output it to the corresponding output port 3;

[0026] Specifically, in this embodiment, the power supply module 1 is an ACDC power module or a DC output module of a battery, and the conversion module 2 is a BUCK step-down circuit, but the present invention is not limited thereto.

[0027] Multiple protocol modules 4 are connected to multiple output ports 3 respectively. The protocol modules 4 are used to determine the access of the charging device through the corresponding output port 3, establish a handshake protocol with the charging device, and detect the current actual output power of the corresponding output port 3;

[0028] See Figure 1 and Figure 2 Each protocol module 4 is provided with a PD protocol chip, the PD protocol chip is provided with a CC1 pin and a CC2 pin, each output port 3 is provided with an A5 pin and a B5 pin, the CC1 pin is connected to the corresponding A5 pin, and the CC2 pin is connected to the corresponding B5 pin.

[0029] Specifically, in this embodiment, the PD protocol chip U1 and the PD protocol chip U3 detect whether a charging device is inserted into the output port USB1 and the output port USB2 by connecting the CC1 pin and the CC2 pin with the A5 pin and the B5 pin, but the present invention is not limited thereto.

[0030] Specifically, in this embodiment, the output port is a TYPE-C connector, and the CC1 pin and CC2 pin of the PD protocol chip U1 and the PD protocol chip U3 are connected to the corresponding connected charging device through the A5 pin and B5 pin of the output port USB1 and the output port USB2 to achieve communication between the PD protocol chip and the charging device and the establishment of a charging handshake protocol, but not limited to this.

[0031] See Figure 1 and Figure 2 Each protocol module 4 is provided with a PD protocol chip and a detection resistor. The first end of the detection resistor is connected to the corresponding output port 3, and the second end of the detection resistor is grounded. The PD protocol chip is provided with a CS+ pin and a CS- pin. The CS+ pin is connected to the first end of the detection resistor, and the CS- pin is connected to the second end of the detection resistor.

[0032] Specifically, if Figure 2 For example, in this embodiment, when one of the output ports USB1 and USB2 is connected to a charging device and is charging at full output power, the other output port is also connected to a charging device. The MCU chip U2 sends a charging power detection signal to the PD protocol chip of the output port connected to the charging device. The PD protocol chip U1 determines the current actual charging power value of the output port USB1 by feeding back a current detection signal to the CS+ pin and the CS- pin through an output current detection circuit composed of a detection resistor R9 and its peripherals. Similarly, the PD protocol chip U3 detects and determines the current actual charging power value of the output port USB2 by an output current detection circuit composed of a detection resistor R30 and its peripherals.

[0033] Specifically, in this embodiment, after the output port USB1 and the output port USB2 are both connected to the charging device, the MCU chip U2 will repeatedly send detection signals to the PD protocol chip U1 and the PD protocol chip U3 to dynamically allocate the maximum charging power values ​​of the output ports USB1 and USB2 based on the current actual charging power values ​​of the output port USB1 and the output port USB2, but not limited to this.

[0034] Multiple protocol modules 4 are connected to the power distribution module 5, and the protocol module 4 is used to send an access signal and the current actual output power information of the corresponding output port 3 to the power distribution module 5;

[0035] See Figure 1 and Figure 2 Each protocol module 4 is provided with a PD protocol chip, the power distribution module 5 is an MCU chip U2, the PD protocol chip is provided with a GPIO4 pin and a GPIO5 pin, and the GPIO4 pin and the GPIO5 pin are respectively connected to the MCU chip 5.

[0036] Specifically, in this embodiment, after detecting that the output port USB1 and the output port USB2 are connected to the charging device, the PD protocol chip U1 and the PD protocol chip U3 will send the access signal of the output port USB1 and the output port USB2 to the MCU chip U2 through the GPIO4 pin and the GPIO5 pin, but is not limited to this.

[0037] Specifically, in this embodiment, when the PD protocol chip U1 and the PD protocol chip U3 detect the current actual charging power of the output port USB1 and the output port USB2 according to the detection instruction of the MCU chip U2, they will feedback to the MCU chip U2 through the GPIO4 pin and the GPIO5 pin, but not limited to this.

[0038] When a single output port 3 is connected to a charging device, the power distribution module 5 is used to send distribution information to the corresponding protocol module 4 according to the access signal sent by the corresponding protocol module 4. Multiple protocol modules 4 are connected to multiple conversion modules 2, and the corresponding protocol module 4 is used to control the corresponding conversion module 2 to provide a full-load output voltage to the corresponding output port 3;

[0039] Specifically, if Figure 2 For example, when a charging device is inserted into one of the output ports USB1 and USB2, and the PD protocol chip corresponding to the other output port confirms to the MCU chip U2 through communication information that no charging device is inserted into the output port, the MCU chip U2 will call its internal power allocation function to send allocation information of providing 65W full-load output power to the PD protocol chip corresponding to the output port where the charging device is inserted, so that the PD protocol chip and the charging device can handshake with a maximum charging power agreement value of 65W, but this is not limited to this.

[0040] When multiple output ports 3 are connected to charging devices, the power distribution module 5 is used to define the order in which the corresponding input ports are connected to the charging devices according to the access signal sent by the corresponding protocol module 4, and to distribute the output power of each output port according to the defined access order and the current actual output power information of the corresponding output port 3, and to send the distribution result to the corresponding protocol module 4. Multiple protocol modules 4 are correspondingly connected to multiple conversion modules 2, and the corresponding protocol module 4 is used to adjust the output voltage provided by the corresponding conversion module 2 to the corresponding output port 3 according to the received distribution result.

[0041] Specifically, in this embodiment, when the multi-port PD fast charging device is provided with multiple output ports and at least one output port is already connected to a charging device, each time a new output port is connected to a charging device, the MCU chip U2 will send a power detection instruction to the PD protocol chip corresponding to the output port connected to the charging device to obtain the current actual charging power of each output port connected to the charging device; and then allocate the charging power of each output port one by one according to the current actual charging power of each output port and the order in which each output port is connected to the charging device.

[0042] like Figure 2 As shown in the example, the output port USB1 has been connected to a charging device, and the output port USB2 is also connected to a charging device. The PD protocol chip U1 detects that the current actual charging power of the output port USB1 is 40W according to the detection instruction of the MCU chip U2. The MCU chip U2 adjusts the maximum supported output power protocol value of the output port USB1 from the original 65W to 45W according to this actual charging power, meeting the charging needs of the output port USB1, and through the internal allocation calculation of the MCU chip U2, defines the maximum supported output power protocol value of the output port USB2 as 20W, and sends the allocation result to the PD protocol chip U3, but is not limited to this.

[0043] Specifically, in this embodiment, when multiple output ports are connected to charging devices for charging, the MCU chip U2 will continuously obtain the current actual charging power of each output port, and dynamically adjust the maximum charging power value supported by each output port in a timely manner to achieve dynamic power allocation, improve charging efficiency and shorten charging time.

[0044] like Figure 2 For example, if the actual charging power of the first output port USB1 connected to the charging device decreases, the MCU chip U2 can dynamically allocate a higher supported charging power value to the second output port USB2 plugged into the charging device. However, this is not limited to this. This application does not define that the output port USB1 must be the first to be connected to the charging device, but defines the output port that is first to be connected to the charging device according to the order in which the output port USB1 and the output port USB2 are connected to the charging device.

[0045] See Figure 1 and Figure 2Each conversion module 2 includes a DCDC circuit and a PNP-type transistor. The DCDC circuit includes an FB pin, a VDC-IN pin, and a VDC-OUT pin. The corresponding protocol module 4 is connected to the control end of the corresponding transistor, the FB pin is connected to the output end of the corresponding transistor, the VDC-IN pin is connected to the power supply module, and the VDC-OUT pin is connected to the input end and the corresponding output port of the corresponding transistor.

[0046] Specifically, in this embodiment, after receiving the allocation information or allocation results, the PD protocol chip U1 and the PD protocol chip U3 will reach a handshake of the charging agreement with the charging device through the output port USB1 and the output port USB2, and correspondingly control the on-off state of the transistor Q1 and the transistor Q3 to control the input signal of the corresponding DCDC circuit FB1 pin and the corresponding DCDC circuit FB2 pin, thereby adjusting the output voltage of the corresponding DCDC circuit VDC-OUT1 pin and the corresponding DCDC circuit VDC-OUT2 pin, but is not limited to this.

[0047] Specifically, in this embodiment, after the PD protocol chip U1 and the PD protocol chip U3 adjust the output voltage of the corresponding DCDC circuit, the PD protocol chip U1 and the PD protocol chip U3 will again detect and confirm the current value information of the detection resistor R9 and the detection resistor R30 to confirm that the charging power of the output port USB1 and the output port USB2 reaches the allocated output power value, but is not limited to this.

[0048] See Figure 1 and Figure 2 A MOS tube is provided between the output end of each conversion module 2 and the input end of the corresponding output port 3. Each protocol module 4 is provided with a PD protocol chip. The PD protocol chip is provided with a GATE pin, which is connected to the control end of the MOS tube.

[0049] Specifically, in this embodiment, after the PD protocol chip U1 and the PD protocol chip U3 adjust the output voltage of the corresponding DCDC circuit, the PD protocol chip U1 and the PD protocol chip U3 will control the MOS tube Q2 and the MOS tube Q4 to be in the on state through the GATE pin, so that the corresponding conversion module provides the allocated output power to the output port USB1 and the output port USB2.

[0050] The present invention is provided with a power distribution module 5 and multiple protocol modules 4 to dynamically control the output voltage provided by the conversion module 2 to the corresponding output port 3, thereby realizing dynamic allocation of the maximum charging power to each charging port. The conversion module 2 is connected to the power supply module 1 and the output port 3 to convert the voltage output by the power supply module 1 and output the voltage to the output port 3. The protocol module 4 is connected to the output port 3 to determine the connection of a charging device through the output port 3, establish a handshake protocol with the charging device, and detect the current actual output power of the output port 3. The protocol module 4 is connected to the power distribution module 5 to send an access signal and information about the current actual output power of the output port 3 to the power distribution module 5. The power distribution module 5 determines whether a single charging device or multiple charging devices are connected based on the access signal, and controls the conversion module 2 to provide the full-load output voltage to the output port 3 through the protocol module 4, or allocates the output power of each output port 3 based on the order in which the charging devices are connected and the current actual output power of the output port 3. The protocol module 4 is used to adjust the output voltage provided by the conversion module 2 to the output port 3, thereby realizing dynamic allocation of the maximum charging power to each charging port based on the actual charging power of each charging port, thereby shortening the charging time when charging multiple ports is connected and effectively improving the user experience.

[0051] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A multi-port PD fast charging device with dynamic power allocation function, characterized in that: include: A power supply module, multiple conversion modules, multiple output ports, multiple protocol modules and a power distribution module; The input ends of the multiple conversion modules are respectively connected to the output ends of the power supply module, and the output ends of the multiple conversion modules are correspondingly connected to the input ends of the multiple output ports. The conversion module is used to convert the voltage output by the power supply module and output it to the corresponding output port; The plurality of protocol modules are connected to the plurality of output ports, and the protocol modules are used to determine the access of the charging device through the corresponding output port, establish a handshake protocol with the charging device, and detect the current actual output power of the corresponding output port; A plurality of the protocol modules are connected to the power distribution module, and the protocol modules are used to send an access signal and current actual output power information of the corresponding output port to the power distribution module; When a single output port is connected to a charging device, the power distribution module is used to send distribution information to the corresponding protocol module according to the access signal sent by the corresponding protocol module. Multiple protocol modules are correspondingly connected to multiple conversion modules, and the corresponding protocol module is used to control the corresponding conversion module to provide a full-load output voltage to the corresponding output port; When multiple output ports are connected to charging devices, the power allocation module is used to define the order in which the corresponding input ports are connected to the charging devices according to the access signal sent by the corresponding protocol module, and allocate the output power of each output port according to the defined access order and the current actual output power information of the corresponding output port, and send the allocation result to the corresponding protocol module. The multiple protocol modules are correspondingly connected to the multiple conversion modules, and the corresponding protocol module is used to adjust the output voltage provided by the corresponding conversion module to the corresponding output port according to the received allocation result; Each of the protocol modules is provided with a PD protocol chip and a detection resistor, wherein a first end of the detection resistor is connected to the corresponding output port, and a second end of the detection resistor is grounded; the PD protocol chip is provided with a CS+ pin and a CS- pin, wherein the CS+ pin is connected to the first end of the detection resistor, and the CS- pin is connected to the second end of the detection resistor; Each of the conversion modules includes a DCDC circuit and a PNP-type transistor. The DCDC circuit includes an FB pin, a VDC-IN pin, and a VDC-OUT pin. The corresponding protocol module is connected to the control end of the corresponding transistor, the FB pin is connected to the output end of the corresponding transistor, the VDC-IN pin is connected to the power supply module, and the VDC-OUT pin is connected to the input end of the corresponding transistor and the corresponding output port.

2. The multi-port PD fast charging device with dynamic power allocation function according to claim 1, characterized in that: Each of the protocol modules is provided with a PD protocol chip, the power distribution module is an MCU chip, the PD protocol chip is provided with a GPIO4 pin and a GPIO5 pin, and the GPIO4 pin and the GPIO5 pin are respectively connected to the MCU chip.

3. The multi-port PD fast charging device with dynamic power allocation function according to claim 1, characterized in that: A MOS tube is provided between the output end of each conversion module and the input end of the corresponding output port, and each protocol module is provided with a PD protocol chip. The PD protocol chip is provided with a GATE pin, and the GATE pin is connected to the control end of the MOS tube.

4. The multi-port PD fast charging device with dynamic power allocation function according to claim 1, characterized in that: Each of the protocol modules is provided with a PD protocol chip, the PD protocol chip is provided with a CC1 pin and a CC2 pin, each of the output ports is provided with an A5 pin and a B5 pin, the CC1 pin is connected to the corresponding A5 pin, and the CC2 pin is connected to the corresponding B5 pin.

Images