Cluster type quick charging device

Abstract

The utility model discloses a cluster type quick charging device, which comprises a high-power AC / DC circuit, a plurality of charging circuits, a plurality of charging control circuits and a central control module, and is characterized in that the input end of the high-power AC / DC circuit is connected with a charging power supply; each charging circuit comprises a DC / DC conversion circuit, a power detection circuit and a charging port, the input end of the DC / DC conversion circuit is connected with the high-power AC / DC circuit, and the output end of the DC / DC conversion circuit is sequentially connected with the power detection circuit and the charging port; each charging control circuit is connected with the corresponding charging circuit in a one-to-one manner. A power scheduling strategy is preset in the central control module, and the output power of each charging port can be automatically allocated through the charging control circuit when a power scheduling event is monitored. When the central control module calculates that the power of the charging equipment reaches the power supply power of the charging device and new equipment is inserted into the charging device, the central control module can automatically allocate the output power of each charging port so as to ensure that each charging port can charge the to-be-charged equipment.

Description

Technical Field

[0001] This utility model relates to the field of fast charging technology, and in particular to a cluster-type fast charging device. Background Technology

[0002] Fast charging technology is a typical technology in the current mobile device industry. It is achieved by increasing the output power of the charging port. However, ordinary chargers only have a few charging ports and can only meet the needs of home use. For densely populated public places, such chargers cannot meet the charging needs of people with multiple mobile devices, especially since the output power of the charging device is relatively small, the number of output ports is small, and the charging protocol is simple.

[0003] Therefore, a high-power cluster fast charging device was developed and put into use. Utility Model Content

[0004] The purpose of this invention is to provide a cluster-type fast charging device that can solve one or more of the problems in the prior art mentioned above.

[0005] A cluster-type fast charging device includes: a high-power AC / DC circuit, multiple charging circuits, multiple charging control circuits, and a central control module.

[0006] The input terminal of the high-power AC / DC circuit is connected to the charging power supply and is used to convert the AC power input by the charging power supply into DC power.

[0007] Each of the charging circuits includes a DC / DC converter circuit, a power detection circuit, and a charging port. The input terminal of the DC / DC converter circuit is connected to the output terminal of the high-power AC / DC circuit, and the output terminal of the DC / DC converter circuit is connected to the power detection circuit and the charging port in sequence. The power detection circuit is used to monitor the output power of the DC / DC converter circuit in real time, and the charging port is used to connect the device to be charged.

[0008] Each of the charging control circuits is connected to a corresponding charging circuit to read the charging protocol of the device to be charged and issue a charging control command suitable for the device to be charged, thereby controlling the DC / DC conversion circuit to convert the DC power output by the high-power AC / DC circuit into the DC power required by the device to be charged.

[0009] The central control module has a preset power scheduling strategy, which can automatically adjust the output power of each charging port through the charging control circuit when a power scheduling event is detected, so as to ensure that each charging port can charge the device to be charged; the power scheduling event is when the power of the charging device has reached the power supply power of the charging device and a new device to be charged is inserted into the charging port.

[0010] In some implementations, the cluster charging device also includes an Internet of Things (IoT) circuit, which includes a Wi-Fi module and peripheral components for communicating with user terminals, enabling users to view the charging status of the charging device through an app.

[0011] In some embodiments, the cluster charging device further includes a power supply circuit, the input of which is connected to the output of the high-power AC / DC circuit, and the output of which is connected to the central control module and the Internet of Things (IoT) circuit, respectively, for converting the voltage output by the high-power AC / DC circuit into a voltage suitable for the operation of the central control module and the IoT circuit.

[0012] In some implementations, the central control module includes an MCU control circuit, a program protection circuit, and a port activation circuit, which are respectively connected to the MCU control circuit. The program protection circuit is used to send a signal to the MCU control circuit to self-destruct when theft is detected. The port activation circuit is used to control the opening and closing of the charging port according to the instructions of the MCU control circuit.

[0013] In some embodiments, the central control module further includes a DC / DC cooling fan control circuit and a DC / DC temperature detection circuit. The DC / DC temperature detection circuit is used to monitor the temperature of the DC / DC converter circuit and send the data to the MCU control circuit. The DC / DC cooling fan control circuit is used to control the start and stop of the corresponding cooling fan according to the control instructions of the MCU control circuit.

[0014] In some embodiments, the MCU control circuit further includes a light board and indicator lights, the light board being used to indicate the operating status of each of the charging ports; and the indicator lights being used to indicate the communication status between the MCU control circuit and the WIFI module.

[0015] In some embodiments, the high-power AC / DC circuit includes an input rectifier filter circuit, a PFC circuit, an LLC circuit, and a synchronous rectifier output circuit. The input terminal of the input rectifier filter circuit is connected to an external power supply to convert the AC voltage input from the external power supply into a DC voltage. The output terminal of the input rectifier filter circuit is connected in sequence to the PFC circuit and the LLC circuit to provide a stable DC output voltage to the device to be charged.

[0016] In some embodiments, the high-power AC / DC circuit further includes an AC / DC heat dissipation circuit for monitoring the internal temperature of the high-power AC / DC conversion circuit to prevent overheating.

[0017] The beneficial effects of this utility model are as follows: the charging device has a high power, reaching 1000W; it has as many as 16 charging ports, which can simultaneously fast charge 16 mobile devices, and the number of charging ports can be expanded according to market demand; the charging device is compatible with all mobile devices with fast charging protocols; because the charging device uses an MCU control circuit, it can automatically adjust the charging parameters of each charging port, which can prevent the AC / DC circuit from shutting down due to overload, thus avoiding affecting the charging of the device; the fast charging method can save users a lot of time; and because of the multiple charging ports, the charging device is very suitable for places where people gather. Attached Figure Description

[0018] Figure 1 This is a structural block diagram of the charging device according to an embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 A schematic diagram of the high-power AC / DC circuit of the charging device shown.

[0020] Figure 3 yes Figure 1 The circuit diagram of a charging circuit of the charging device shown.

[0021] Figure 4 yes Figure 1 A schematic diagram of the central control module of the charging device shown.

[0022] Figure 5 for Figure 1 A schematic diagram of the IoT circuit of the charging device shown.

[0023] Figure 6 for Figure 1 A schematic diagram of the power supply circuit of the charging device shown.

[0024] The diagram is labeled as follows: 10, High-power AC / DC circuit; 20, Charging circuit; 21, DC / DC conversion circuit; 22, Power detection circuit; 23, Charging port; 30, Charging control circuit; 40, Central control module; 50, Internet of Things circuit; 60, Power supply circuit. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] Combination Figure 1 As shown, this embodiment provides a clustered fast charging device, including: a high-power AC / DC circuit 10, multiple charging circuits 20, multiple charging control circuits 30, and a central control module 40. The input terminal of the high-power AC / DC circuit 10 is connected to a charging power supply and is used to convert the AC power input by the charging power supply into DC power. Each charging circuit 20 includes a DC / DC conversion circuit 21, a power detection circuit 22, and a charging port 23. The input terminal of the DC / DC conversion circuit 21 is connected to the output terminal of the high-power AC / DC circuit 10, and the output terminal of the DC / DC conversion circuit 21 is connected to the power detection circuit 22 and the charging port 23 in sequence. The power detection circuit 22 is used to monitor the output power of the DC / DC conversion circuit 21 in real time, and the charging port 23 is used to connect the device to be charged.

[0027] Each charging control circuit 30 is connected to a corresponding charging circuit 20 to read the charging protocol of the device to be charged and issue a charging control command suitable for the device to be charged, and control the DC / DC conversion circuit 21 to convert the DC power output by the high-power AC / DC circuit 10 into the DC power required by the device to be charged.

[0028] The central control module 40 has a preset power scheduling strategy. When a power scheduling event is detected, the charging control circuit 30 can automatically adjust the output power of each charging port 23 to ensure that each charging port 23 can charge the device to be charged. The power scheduling event is when the power of the device to be charged has reached the power of the power supply of the charging device and a new device to be charged is inserted into the charging port 23.

[0029] Specifically, in combination Figure 2 As shown, the high-power AC / DC circuit 10 consists of an input rectifier and filter circuit, a PFC circuit, an LLC circuit, a synchronous rectifier output circuit, and an AC / DC heat dissipation circuit.

[0030] The input rectifier and filter circuit consists of fuse F1, varistor MOV1, inductors LF1 and LF2, capacitors CX1, CX2, and CX3, bleeder resistors R1, R2, R3, R4, R5, and R6, rectifier bridges BD1 and BD2, capacitors CB1 and CB2, and capacitors CY1, CY2, CY3, CY4, CY5, and CY6. Fuse F1 protects the high-power AC / DC circuit from faults; varistor MOV1 acts as a lightning protection circuit for the clustered fast charging device; inductors LF1 and LF2, and capacitors CX1, CX2, and CX3 suppress conducted interference from the fast charging device to the power grid; capacitors CY1, CY2, CY3, CY4, CY5, and CY6 form an electromagnetic interference suppression circuit; bleeder resistors R2 / R5, R3 / R6, and R1 / R4 are the bleeder resistors for capacitors CX1, CX2, and CX3, respectively; rectifier bridges BD1 and BD2 convert the AC input into DC V1, and capacitors CB1 and CB2 are the filter capacitors for V1.

[0031] The PFC circuit mainly consists of inductors L2 and L3, rectifier diodes D5, D6, and D7, MOSFET Q6, filter capacitor EC2, relay J1, thermistor RT1, U2, and its peripheral components. D1, D2, and R12 form the PFC startup circuit. U2 is the PFC control circuit; pin 2 of U2 controls the switch of Q7, which in turn controls the switch of Q6. When Q6 is on, inductors L2 and L3 convert electrical energy into magnetic field energy and store it in their inductors. When Q6 is off, the magnetic field energy stored in inductors L2 and L3 is converted back into electrical energy and rectified into DC voltage V2 by rectifier diodes D5, D6, and D7. Thermistor RT1 protects the LLC circuit from damage caused by shocks. Filter capacitor CE2 filters the voltage HV to maintain the electrical stability. To ensure the stability of voltage HV, relay J1 shorts RT1 after the AC / DC circuit is working properly to prevent damage to RT1; V_PFC is the operating voltage of U2, and CE1 and C10 are the filter capacitors of V_PFC. V_PFC is also the starting voltage of the LLC circuit when the circuit starts working; R38 and R33 are the sampling circuit for voltage HV; D17-D20, R62, R65, CE8, CE10, Q14, and ZD2 form the VCC-B power supply circuit, which provides operating power for relay J1; R20 is the PFC overcurrent sampling circuit.

[0032] The LLC circuit mainly consists of resonant inductor L4, the primary inductance (i.e., magnetizing inductance) of transformers T1 and T2, resonant capacitor C22, control circuit IC1 and its peripheral components, Q13, Q17 and their driving circuit. D21-D24, R63, R57, CE7, CE9, Q12, and ZD1 form the VCC-A power supply circuit, providing operating power for IC1 and U2. D12, D13, and D14 are isolation diodes, isolating the operating power of IC1 and U2. The LDR signal output from pin 11 of IC1 controls the operation of MOSFET Q17. R56, R60, R64, D15, and Q15 form the driving circuit for MOSFET Q17. The HDR signal output from pin 15 of IC1 controls the operation of MOSFET Q13. R58, R59, R61, D16, and Q16 form the driving circuit for MOSFET Q13. C17, C21, R55, D9, D10, R40, and R42 form the overcurrent detection circuit for the LLC circuit. C19 and C20 can stabilize the operating states of Q13 and Q17, respectively.

[0033] The synchronous rectification output circuit mainly consists of transformers T1 and T2, a synchronous rectification circuit, an output filter capacitor, and an output voltage control circuit. The output voltage of transformers T1 and T2 is supplied to the DC / DC circuit after synchronous rectification and filtering. Q18-Q25 MOS transistors are synchronous rectification transistors, U5 and U6 are synchronous rectification control circuits, and U1, U3, U4 and their peripheral components constitute the output voltage control circuit.

[0034] The AC / DC heat dissipation circuit mainly consists of MOSFET Q26, fan FAN, and temperature sensing resistor RT3. RT3 acts as the temperature sensing resistor. When the internal temperature of the AC / DC power supply reaches approximately 75℃, MOSFET Q26 conducts, and fan FAN operates. In the circuit, D28 is a protection diode to prevent the high reverse voltage generated when fan FAN is turned off from damaging MOSFET Q26.

[0035] Specifically, in combination Figure 3 As shown, the DC / DC converter circuit 21 is illustrated using the first charging circuit as an example. In the circuit, 1U1 and its peripheral components constitute the control circuit of the DC / DC converter circuit; 1U2 is the charging protocol, applicable to all current mobile devices with fast charging protocols; 1PD is the output USB-C. In the circuit, 1R3, 1R4, and 1R6 are output sampling resistors; 1RCS is an overcurrent protection sampling resistor; 1RS is a current sampling resistor and also has protocol overcurrent protection sampling function; F2 is a fuse; 1Q1 is a control switch; 1Q2 is a freewheeling diode; 1L1 is a filter inductor; 1R2 and 1C6 form a surge absorption circuit; and 1Q3 is the output control switch.

[0036] Furthermore, the clustered fast charging device of this application also includes an Internet of Things (IoT) circuit 50, combined with... Figure 5As shown, the IoT circuit 50 includes a WIFI module and peripheral components. Users can download the "innovatecharger" APP mini-program through the IoT circuit and click the "1000W" button on the operation interface to view the charging current, charging voltage, and charging capacity of the charging device at any time.

[0037] Furthermore, the cluster-type fast charging device of this application also includes a power supply circuit 60. The input terminal of the power supply circuit 60 is connected to the output terminal of the high-power AC / DC circuit 10, and the output terminal of the power supply circuit 60 is connected to the central control module 40 and the Internet of Things circuit 50 respectively, for converting the voltage output by the high-power AC / DC circuit 10 into a voltage suitable for the operation of the central control module 40 and the Internet of Things circuit 50.

[0038] Specifically, in combination Figure 6 As shown, the power supply circuit consists of U5 and its peripheral components. It is used to convert the output voltage Vo of the high-power AC / DC circuit into a voltage VWF suitable for the operation of the central control module 40 and the Internet of Things circuit 50. C14 is the input filter capacitor of U5. U5 is the control circuit of the DC / DC conversion. C15 and R28 are the bootstrap circuit of U5. C16 and R27 are the absorption circuit. L1 is both a filter inductor and an energy storage circuit. E2 is the output filter capacitor of the power supply circuit. R29, R30 and R31 are the output sampling circuit, which is used to detect the output voltage of the power supply circuit in order to control the power supply circuit to output a stable VWF voltage.

[0039] Specifically, in combination Figure 4 As shown, the central control module 40 includes an MCU control circuit and a program protection circuit and a port activation circuit connected to the MCU control circuit respectively. The program protection circuit is used to send a signal to the MCU control circuit to self-destruct when theft is detected; the port activation circuit is used to control the opening and closing of the charging port 23 according to the instructions of the MCU control circuit.

[0040] Furthermore, the central control module 40 also includes a DC / DC cooling fan control circuit and a DC / DC temperature detection circuit. The DC / DC temperature detection circuit monitors the temperature of the DC / DC converter circuit 21 and sends the data to the MCU control circuit. The DC / DC cooling fan control circuit controls the start and stop of the corresponding cooling fan according to the control instructions from the MCU control circuit. The MCU control circuit also includes a light board and indicator lights. The light board indicates the operating status of each charging port 23, and the indicator lights indicate the communication status between the MCU control circuit and the WIFI module.

[0041] Specifically, the MCU control circuit mainly consists of an MCU (U2), a data memory (U4), an LED board (J-LED), and indicator lights (LED1). The LED board is used to indicate the working status of each charging port 23. A green light indicates that no device is connected to the charging port or that the device has finished charging; a red light indicates that a device is charging at the charging port.

[0042] LED1 has the following indication functions:

[0043] 1. Initially, the MCU control circuit communicates with the WIFI module via WIFI. The MCU sends commands to the WIFI module. If the WIFI module responds, LED1 lights up; if there is no response, LED1 turns off.

[0044] 2. When the WIFI module is disconnected from the background, LED1 is off; when the WIFI module is connected to the background, if the MCU does not receive a command from the background, LED1 remains on; when the MCU receives a command from the background, LED1 flashes at a speed of 100ms for 1.3 seconds.

[0045] The temperature detection of the DC / DC converter circuit mainly consists of NTC1, R9, NTC2, and R10. To meet the heat dissipation requirements of the DC / DC converter circuit, three fans are installed, each with two speed settings. When the DC / DC converter circuit temperature reaches 60℃, Q3A, Q3B, and Q3C are activated to control the fans to operate at slow speed. When the DC / DC converter circuit temperature reaches 75℃, Q1, Q2, and Q3 are activated to control the fans to operate at full speed.

[0046] The program protection circuit consists of S1 and R13. When someone attempts to steal the program, the protection circuit will self-destruct to prevent the program from being stolen.

[0047] When no load is connected, all charging ports 23 of the clustered fast charging device are closed to save power. Connecting a load activates the charging ports. The activation circuit is divided into four groups: group one consists of R43, 1D, 2D, 3D, and 4D; group two consists of R45, 5D, 6D, 7D, and 8D; group three consists of R47, 9D, 10D, 11D, and 12D; and group four consists of R49, 13D, 14D, 15D, and 16D. All four ports in a group will only open when at least one port in that group is connected to a load.

[0048] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A cluster-type fast charging device, characterized in that, include: A high-power AC / DC circuit (10), multiple charging circuits (20), multiple charging control circuits (30), and a central control module (40) are included. The input terminal of the high-power AC / DC circuit (10) is connected to the charging power supply and is used to convert the AC power input by the charging power supply into DC power. Each of the charging circuits (20) includes a DC / DC converter circuit (21), a power detection circuit (22), and a charging port (23). The input terminal of the DC / DC converter circuit (21) is connected to the output terminal of the high-power AC / DC circuit (10), and the output terminal of the DC / DC converter circuit (21) is connected to the power detection circuit (22) and the charging port (23) in sequence. The power detection circuit (22) is used to monitor the output power of the DC / DC converter circuit (21) in real time, and the charging port (23) is used to connect the device to be charged. Each of the charging control circuits (30) is connected to a corresponding charging circuit (20) to read the charging protocol of the device to be charged and issue a charging control command suitable for the device to be charged, and control the DC / DC conversion circuit (21) to convert the DC power output by the high-power AC / DC circuit (10) into the DC power required by the device to be charged. The central control module (40) has a preset power scheduling strategy, which can automatically adjust the output power of each charging port (23) through the charging control circuit (30) when a power scheduling event is detected, so as to ensure that each charging port (23) can charge the device to be charged; the power scheduling event is when the power of the charging device has reached the power of the power supply of the charging device and a new device to be charged is inserted into the charging port (23).

2. The cluster-type fast charging device according to claim 1, characterized in that, It also includes an Internet of Things (IoT) circuit (50), which includes a WIFI module and peripheral components for communicating with a user terminal, enabling the user to view the charging status of the charging device through an APP.

3. The cluster-type fast charging device according to claim 2, characterized in that, It also includes a power supply circuit (60), the input of which is connected to the output of the high-power AC / DC circuit (10), and the output of which is connected to the central control module (40) and the Internet of Things circuit (50) respectively, for converting the voltage output by the high-power AC / DC circuit (10) into a voltage suitable for the operation of the central control module (40) and the Internet of Things circuit (50).

4. The cluster-type fast charging device according to claim 3, characterized in that, The central control module (40) includes an MCU control circuit and a program protection circuit and a port activation circuit connected to the MCU control circuit respectively. The program protection circuit is used to send a signal to the MCU control circuit to self-destruct when theft is detected. The port activation circuit is used to control the opening and closing of the charging port (23) according to the instructions of the MCU control circuit.

5. The cluster-type fast charging device according to claim 4, characterized in that, The central control module (40) also includes a DC / DC cooling fan control circuit and a DC / DC temperature detection circuit. The DC / DC temperature detection circuit is used to monitor the temperature of the DC / DC converter circuit (21) and send it to the MCU control circuit. The DC / DC cooling fan control circuit is used to control the start and stop of the corresponding cooling fan according to the control instructions of the MCU control circuit.

6. The cluster-type fast charging device according to claim 4, characterized in that, The MCU control circuit also includes a light board and indicator lights. The light board is used to indicate the working status of each of the charging ports (23). The indicator lights are used to indicate the communication status between the MCU control circuit and the WIFI module.

7. The cluster-type fast charging device according to claim 1, characterized in that, The high-power AC / DC circuit (10) includes an input rectifier filter circuit, a PFC circuit, an LLC circuit, and a synchronous rectifier output circuit. The input terminal of the input rectifier filter circuit is connected to an external power supply to convert the AC voltage input by the external power supply into a DC voltage. The output terminal of the input rectifier filter circuit is connected to the PFC circuit and the LLC circuit in sequence to provide a stable DC output voltage to the device to be charged.

8. The cluster-type fast charging device according to claim 7, characterized in that, The high-power AC / DC circuit (10) also includes an AC / DC heat dissipation circuit, which is used to monitor the internal temperature of the high-power AC / DC conversion circuit and prevent overheating.

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