A fast charging vehicle-mounted charger

Abstract

The utility model provides a kind of fast charging type vehicle charger in the technical field of vehicle charging equipment, including power input module, filter module, DCDC module, fast charging control module, communication module, power amplifier module, human body induction module, LED lighting module, first voltage reduction module, second voltage reduction module, double USB output module, TypeC output module;Power input module, filter module, DCDC module, fast charging control module, communication module are sequentially connected;First voltage reduction module is connected with DCDC module, power amplifier module, second voltage reduction module;Second voltage reduction module is connected with human body induction module, LED lighting module;Communication module is connected with power amplifier module, human body induction module, LED lighting module;Double USB output module is connected with filter module;TypeC output module is connected with fast charging control module.The utility model has the advantages that: the power consumption of vehicle charger is greatly reduced, and the use stability, durability and user experience of vehicle charger are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle charging equipment technology, and in particular to a fast-charging vehicle charger. Background Technology

[0002] As an on-board power conversion device, the core function of a vehicle charger is to obtain power from the vehicle's cigarette lighter socket and provide charging services for mobile terminal devices (such as smartphones and tablets). For example, many ride-hailing vehicles have low configurations, with insufficient rear charging ports, making it difficult for passengers to recharge their devices. Furthermore, the proportion of passengers carrying charging equipment on short trips is relatively low, highlighting the urgent need for standardized power supply facilities to improve the service experience. When on-board chargers are used in ride-hailing vehicles, they can provide charging services for passengers' mobile phones, effectively reducing passengers' battery anxiety.

[0003] When car chargers are used in ride-hailing vehicles, for passenger convenience, the charger itself is usually located near the rear seats, such as behind the headrests of a row of seats. One end of the charger connects to the vehicle's cigarette lighter for power, and the other end has a charging cable for passengers to charge. However, traditional car chargers have the following drawbacks: 1. They cannot sense the presence of passengers in the vehicle. Even when there are no passengers and the charger is not in use, it still maintains full power operation, resulting in excessive static power consumption (typical value > 0.5W), wasting vehicle power resources; 2. In low-light conditions at night, passengers may not be able to notice the car charger in time, reducing its usage frequency and causing passengers to miss the opportunity to charge their mobile devices, seriously affecting the user experience; 3. The presence of a large amount of electromagnetic interference in vehicles causes fluctuations in the output power of the car charger when it is at high power, meaning that it cannot achieve stable power output during fast charging, which not only affects the user experience but also accelerates the aging of components.

[0004] Therefore, how to provide a fast-charging vehicle charger that reduces power consumption and improves stability, durability, and user experience has become an urgent technical problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a fast-charging vehicle charger that reduces the power consumption of the vehicle charger and improves the stability, durability and user experience of the vehicle charger.

[0006] This utility model is implemented as follows: a fast-charging vehicle charger, including a power input module, a filter module, a DC-DC module, a fast-charging control module, a communication module, a power amplifier module, a human body induction module, an LED lighting module, a first step-down module, a second step-down module, a dual USB output module, and a Type-C output module.

[0007] The power input module, filter module, DC-DC converter module, fast charging control module, and communication module are connected in sequence. The input terminal of the first step-down module is connected to the output terminal of the DC-DC converter module, and the output terminal is connected to the input terminal of the communication module, the input terminal of the power amplifier module, and the input terminal of the second step-down module. The output terminal of the second step-down module is connected to the input terminal of the human body sensor module and the input terminal of the LED lighting module. The communication module is connected to the control terminals of the power amplifier module, the human body sensor module, and the LED lighting module, respectively. The input terminal of the dual USB output module is connected to the output terminal of the filter module. The input terminal of the Type-C output module is connected to the output terminal of the fast charging control module.

[0008] Furthermore, the filtering module includes a fuse F1, a clamping diode D1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a polarized capacitor CE1, a terminal T1, a terminal T3, and a terminal T4.

[0009] The clamping diode D1, capacitors C1, C2, C3, C4, C5, and polarized capacitor CE1 are connected in parallel. The positive terminal is connected to one end of fuse F1, the input terminal of the dual USB output module, and the input terminal of the DCDC module. The negative terminal is connected to terminals T3 and T4 and grounded. The other end of fuse F1 is connected to terminal T1. Terminals T1, T3, and T4 are all connected to the output terminal of the power input module.

[0010] Furthermore, the DC-DC module includes a buck-boost control chip U2, a MOSFET Q2, a MOSFET Q3, a MOSFET Q4, a MOSFET Q5, a MOSFET Q10, an inductor L3, a diode D8, and resistors R3, R4, R11, R12, R14, R15, R16, R17, R19, R24, R25, R27, R29, R33, R35, R37, R38, R39, and R40. A resistor R41, a resistor R43, a resistor R44, a resistor R45, a resistor R76, a resistor R77, a resistor R78, a surface mount resistor RS1, a surface mount resistor RS2, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C28, a capacitor C31, a capacitor C32, a capacitor C33, a capacitor C34, a capacitor C36, and a polarized capacitor CE2;

[0011] Pin 1 of the buck-boost control chip U2 is connected to one end of resistor R14; pin 3 is connected to one end of resistor R25 and one end of capacitor C31; pin 4 is connected to one end of resistor R24 ​​and the other end of capacitor C31; pin 6 is connected to one end of resistor R78 and one end of capacitor C32; pins 7 and 9 are connected to the other end of capacitor C32 and one end of capacitor C34 and grounded; pin 8 is connected to the other end of capacitor C34; pin 10 is connected to one end of resistor R45 and the input terminal of the fast charging control module; pin 11 is connected to one end of resistor R44 and the input terminal of the fast charging control module; pin 13 is connected to one end of resistor R41; pin 14 is connected to one end of resistor R43; pin 15 is connected to one end of resistor R38 and one end of capacitor C33; pin 16... Pin 17 is connected to one end of resistor R39; pin 19 is connected to one end of resistor R33 and one end of capacitor C28; pin 20 is connected to the other end of capacitor C28 and one end of resistor R29; pin 21 is connected to one end of resistor R16; pin 22 is connected to one end of resistor R11; pin 23 is connected to one end of inductor L3, one end of capacitor C24, one end of resistor R4, the drain of MOSFET Q5, and the source of MOSFET Q2; pin 24 is connected to one end of resistor R17; pin 26 is connected to one end of resistor R12; pin 27 is connected to the other end of inductor L3, one end of capacitor C23, one end of resistor R3, the drain of MOSFET Q4, and the source of MOSFET Q3; pin 28 is connected to one end of resistor R15.

[0012] After capacitors C20, C21, and C22 are connected in parallel, one end is connected to one end of surface mount resistor RS1, one end of resistor R37, pin 5 of buck-boost control chip U2, and the output terminal of the filter module, while the other end is grounded. After capacitors C15, C16, C17, C18, and C19 are connected in parallel with polarized capacitor CE2, the positive terminal is connected to one end of surface mount resistor RS2, one end of resistor R19, one end of resistor R33, pin 18 of buck-boost control chip U2, and the fast charging control module, while the negative terminal is grounded.

[0013] The gate (G) of MOSFET Q10 is connected to one end of resistor R76 and one end of resistor R77, the source (S) is connected to the other end of resistor R77 and grounded, and the drain (D) is connected to the other end of resistor R37. The other end of resistor R76 is connected to the other end of resistor R78. The other end of resistor R44 is connected to the other end of resistor R45. The drain (D) of MOSFET Q3 is connected to the other end of surface-mount resistor RS1, and the gate (G) is connected to the other end of resistor R15. The gate (G) of MOSFET Q4 is connected to the other end of resistor R12. The other end of resistor R14 is connected to the other end of capacitor C23. One end of capacitor C12 is connected to the other end of resistor R3, and the other end is connected to one end of capacitor C13 and grounded. The other end of capacitor C13... One end of the resistor R16 is connected to resistor R4; the other end of the resistor R16 is connected to the other end of capacitor C24; the gate of the MOSFET Q5 is connected to the other end of resistor R17; the gate of the MOSFET Q2 is connected to the other end of resistor R11, and the drain is connected to one end of capacitor C14 and the other end of surface mount resistor RS2; one end of resistor R27 is connected to the other end of resistor R19, and the other end is connected to the other end of resistor R35, one end of resistor R40, and the output terminal of diode D8; the input terminal of diode D8 is connected to the fast charging control module; the other end of resistor R40 is connected to the other ends of resistor R41, resistor R43, capacitor C36, capacitor C33, and resistor R39.

[0014] Furthermore, the buck-boost control chip U2 is model CPS5206.

[0015] Furthermore, the fast charging control module includes a fast charging protocol control chip U1, a thermistor NTC1, a MOSFET Q7, a surface mount resistor RS3, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R13, a resistor R20, a resistor R23, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C25, a capacitor C26, a capacitor C37, a capacitor C38, and a capacitor C48.

[0016] Pin 1 of the fast charging protocol control chip U1 is connected to one end of resistor R13, pin 2 is connected to one end of resistor R9 and one end of resistor R10, pin 3 is connected to one end of capacitor C25, pin 4 is connected to one end of capacitor C26, pin 5 is connected to one end of resistor R20, one end of resistor R23 and DC-DC module, pin 8 is connected to one end of capacitor C48, pins 9, 10 and 11 are connected to DC-DC module, and pins 13, 14, 15, 16, 17, 20, 21, 22 and 23 are respectively connected to one end of resistor R34, resistor R32, resistor R22, resistor R21, resistor R18, resistor R8, resistor R7, resistor R6 and resistor R5;

[0017] One end of the thermistor NTC1 is connected to the other end of resistor R13, and the other end is connected to the other end of resistor R10; the other end of resistor R9 is connected to the DC-DC module; the other end of resistor R20 is connected to the other end of capacitor C25; the other end of resistor R23 is connected to the other end of capacitor C26; one end of surface mount resistor RS3 is connected to the other end of resistor R34, and the other end is connected to the other ends of resistors R22 and R32, as well as the drain of MOSFET Q7; capacitors C37 and C38 are connected in parallel, with one end connected to the source of MOSFET Q7, the other end of resistor R18, and the Type-C output module, and the other end grounded; the gate of MOSFET Q7 is connected to the other end of resistor R21; capacitors C8 and C10 are connected in parallel, with one end connected to the other ends of resistors R5 and R6, and the other end grounded; capacitors C9 and C19 are connected in parallel, with one end connected to the other ends of resistors R7 and R8, and the other end grounded.

[0018] Furthermore, the fast charging protocol control chip U1 is model CPS8841.

[0019] Furthermore, the power amplifier module includes a power amplifier chip U5, a transformer BT1, a transformer BT2, a speaker interface J3, a polarized capacitor CE6, a capacitor C7, a capacitor C64, a capacitor C67, a capacitor C69, a capacitor C71, a capacitor C72, and a capacitor C79.

[0020] Pins 1 and 5 of the power amplifier chip U5 are connected to capacitors C67, C69, and C79, as well as the output terminal of the first step-down module. Pin 2 is connected to one end of capacitor C7, pin 3 is connected to the other end of capacitor C7, pins 4, 6, and 7 are connected to the communication module, pin 8 is connected to one end of transformer BT2, and pin 9 is connected to one end of transformer BT1. After capacitor C64 is connected in parallel with polarized capacitor CE6, its positive terminal is connected to pin 10 of the power amplifier chip U5, and its negative terminal is grounded.

[0021] Pin 1 of the speaker interface J3 is connected to one end of capacitor C72 and the other end of transformer BT2, and pin 2 is connected to one end of capacitor C71 and the other end of transformer BT1; the other end of capacitor C71 is connected to the other end of capacitor C72.

[0022] Furthermore, the human body sensing module includes an infrared sensor U6, a MOSFET Q8, a resistor R60, a resistor R61, a resistor R62, a resistor R74, and a resistor R75.

[0023] Pin 1 of the infrared sensor U6 is connected to one end of resistor R62 and grounded; pin 2 is connected to the other end of resistor R62 and one end of resistor R61; pin 3 is connected to one end of resistor R60, the other end of resistor R61 and the second step-down module; pin 4 is connected to one end of resistor R74 and the gate of MOSFET Q8; the source of MOSFET Q8 is connected to the other end of resistor R74, and the drain is connected to one end of resistor R75, the other end of resistor R60 and the communication module.

[0024] Furthermore, the second step-down module includes a step-down chip U7, a capacitor C51, a capacitor C68, and a capacitor C70.

[0025] Pin 1 of the step-down chip U7 is connected to one end of capacitor C51, one end of capacitor C68, and one end of capacitor C70 and grounded. Pin 2 is connected to the other end of capacitor C68, the human body sensing module, and the LED lighting module. Pin 3 is connected to the other end of capacitor C51, the other end of capacitor C70, and the output terminal of the first step-down module.

[0026] Furthermore, the dual USB output module includes a step-down chip U10, a power output interface USB1, a power output interface USB2, a clamping diode D13, a clamping diode D14, a light-emitting diode LEDK, a polarized capacitor CE3, a polarized capacitor CE5, an inductor L5, a resistor R46, a resistor R49, a resistor R52, a resistor R53, a resistor R54, a resistor R55, a capacitor C39, a capacitor C52, a capacitor C53, a capacitor C54, a capacitor C55, a capacitor C56, a capacitor C73, a capacitor C74, a capacitor C75, and a capacitor C76.

[0027] Pins 2 and 3 of the step-down chip U10 are connected to one end of resistor R49. Pin 4 is connected to one end of resistor R55, one end of clamping diode D14, one end of capacitor C76, one end of capacitor C75, pin 1 of power output interface USB2, one end of clamping diode D13, one end of capacitor C74, one end of capacitor C73, and pin 1 of power output interface USB1. Pin 7 is connected to one end of resistor R54. Pin 8 is connected to one end of resistor R46, one end of inductor L5, and one end of capacitor C54.

[0028] After capacitor C56 is connected in parallel with polarized capacitor CE3, its positive terminal is connected to pin 6 of buck chip U10 and the filter module, and its negative terminal is connected to pin 5 of buck chip U10 and grounded; the other end of resistor R54 is connected to the other end of capacitor C54; one end of capacitor C39 is connected to the other end of resistor R46, and the other end is grounded.

[0029] The polarized capacitors CE5, C55, and C53 are connected in parallel. The positive terminal is connected to the other end of inductor L5, one end of capacitor C2, one end of resistor R52, and one end of resistor R49. The negative terminal is connected to one end of resistor R53, the other end of capacitor C76, the other end of capacitor C75, and pin 4 of power output interface USB2. The other end of resistor R52 is connected to the other end of resistor R53 and the other end of capacitor C52. The input terminal of LEDK is connected to the other end of resistor R55. Pin 4 of power output interface USB1 is connected to the other end of capacitor C74 and the other end of capacitor C73 and grounded.

[0030] The advantages of this utility model are:

[0031] 1. The system comprises a power input module, a filter module, a DC-DC converter module, a fast charging control module, a communication module, a power amplifier module, a human body sensor module, an LED lighting module, a first buck converter module, a second buck converter module, a dual USB output module, and a Type-C output module. The power input module, filter module, DC-DC converter module, fast charging control module, and communication module are connected sequentially. The input terminal of the first buck converter module is connected to the DC-DC converter module, and its output terminal is connected to the communication module, the power amplifier module, and the second buck converter module. The output terminal of the second buck converter module is connected to the human body sensor module and the LED lighting module. The communication module is connected to the control terminals of the power amplifier module, the human body sensor module, and the LED lighting module, respectively. The control terminal of the module is connected; the input terminal of the dual USB output module is connected to the filter module; the input terminal of the Type-C output module is connected to the fast charging control module; when the human body sensor module does not detect a passenger, the car charger can enter a low-power mode; when the lighting inside the car is poor, the LED lighting module can be turned on to indicate the location of the car charger to the passenger, and the power amplifier module plays a preset audio prompt to the passenger that the car charger can be used for charging, so as to avoid the passenger missing the opportunity to charge the mobile terminal device in time; the filter module filters the input power supply, effectively reducing electromagnetic interference, and ultimately greatly reducing the power consumption of the car charger, greatly improving the stability, durability and user experience of the car charger.

[0032] 2. By setting the DC-DC module to use the CPS5206 buck-boost control chip, it supports dynamic adjustment of input voltage to adapt to fluctuations in vehicle power supply (such as 12V / 24V system compatibility). With the help of multi-stage MOSFETs and inductor L3, it achieves high-efficiency conversion and effectively reduces energy loss.

[0033] 3. By setting up dual USB output modules and a Type-C output module to work together, the standard charging and high-power fast charging needs are handled separately, avoiding output interference.

[0034] 4. By setting up the CPS8841 chip in the fast charging control module, the mainstream fast charging protocols such as PD and QC are recognized. Combined with the surface mount resistor RS3 and MOSFET Q7, the Type C output current / voltage is dynamically adjusted to meet the fast charging needs of mobile phones, tablets and other devices.

[0035] 5. By equipping the filter module with fuse F1 and clamping diode D1, input overcurrent or reverse voltage surges are prevented; a multi-stage filter network is formed by connecting multiple capacitors in parallel (C1-C5, CE1) to suppress power supply noise and surges; combined with capacitors C20-C22, CE2, etc. in the DCDC module, a high-frequency filter is formed to further stabilize the output and avoid voltage fluctuations affecting subsequent circuits.

[0036] 6. By integrating a thermistor NTC1 into the fast charging control module to monitor the temperature in real time, and feeding back the voltage to the fast charging protocol control chip U1 through resistors R13 / R10, the over-temperature power reduction or shutdown protection is triggered, thereby greatly improving charging safety.

[0037] 7. By setting polarized capacitor CE6 and parallel capacitors (C64 / C67, etc.) in the power amplifier module, energy storage and filtering are provided to prevent audio output overload.

[0038] 8. Low-power standby is achieved through MOSFET Q8 and a resistor network (R60 / R74, etc.), activating the lighting only when a human body is detected, thus saving energy.

[0039] 9. The power amplifier module provides audio signal amplification through transformers BT1 / BT2 and speaker interface J3, integrating car audio expansion capabilities.

[0040] 10. The first step-down module supplies power to the medium-voltage demand modules of the communication module and power amplifier module, and the second step-down module further reduces the voltage to a low voltage to supply the human body sensing module and LED lighting module, thereby achieving voltage level matching and reducing cross interference.

[0041] 11. Current switching is distributed by multiple MOSFETs (such as Q2-Q5, Q10) and current sharing is achieved with surface mount resistors (RS1 / RS2) to reduce the risk of local heat generation; the impact of high-frequency interference on the control chip is reduced by the distributed layout of capacitor matrix (such as C15-C19, CE2).

[0042] 12. By using multiple resistors in parallel (such as R37 / R39 / R40) in key modules (such as DC-DC modules and fast charging control modules) to share the current, and in conjunction with redundant capacitor banks (C12-C14, etc.), the ability to resist transient interference is effectively enhanced.

[0043] 13. The LEDK is integrated through the dual USB module, and the charging status is displayed by current limiting through resistor R55, providing intuitive operation feedback. Attached Figure Description

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0045] Figure 1 This is a circuit diagram of a fast-charging vehicle charger according to this utility model.

[0046] Figure 2 This is the circuit diagram of the filter module of this utility model.

[0047] Figure 3 This is the circuit diagram of the DC-DC module of this utility model.

[0048] Figure 4This is the circuit diagram of the fast charging control module of this utility model.

[0049] Figure 5 This is the circuit diagram of the power amplifier module of this utility model.

[0050] Figure 6 This is the circuit diagram of the human body sensing module of this utility model.

[0051] Figure 7 This is the circuit diagram of the first step-down module of this utility model.

[0052] Figure 8 This is the circuit diagram of the second step-down module of this utility model.

[0053] Figure 9 This is the circuit diagram of the dual USB output module of this utility model.

[0054] Figure 10 This is the circuit diagram of the communication module of this utility model.

[0055] Figure 11 This is the circuit diagram of the Type-C output module of this utility model. Detailed Implementation

[0056] This utility model provides a fast-charging vehicle charger that solves several technical problems in the prior art. Firstly, existing vehicle chargers cannot sense the presence of passengers in the vehicle and continue operating at full power even when unloaded, resulting in excessive static power consumption. Secondly, in low-light conditions at night, passengers may not be able to notice the vehicle charger, reducing its usage frequency. Thirdly, the presence of electromagnetic interference in vehicles causes fluctuations in the high-power output of the vehicle charger, affecting user experience and accelerating component aging. This invention significantly reduces the power consumption of the vehicle charger and greatly improves its stability, durability, and user experience.

[0057] The technical solution in this embodiment of the utility model aims to solve the above-mentioned problems. The overall idea is as follows: By setting up a human body sensing module, an LED lighting module, a power amplifier module, and a filtering module, the vehicle charger can enter a low-power mode when the human body sensing module does not detect a passenger; when the lighting inside the vehicle is poor, the LED lighting module can be turned on to indicate the location of the vehicle charger to the passenger; the power amplifier module plays a preset audio prompt to remind the passenger that the vehicle charger can be used for charging, preventing the passenger from missing the opportunity to charge their mobile terminal device in time; the filtering module filters the input power supply, effectively reducing electromagnetic interference, thereby reducing the power consumption of the vehicle charger and improving the stability, durability, and user experience of the vehicle charger.

[0058] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0059] Please refer to Figures 1 to 11 As shown, a preferred embodiment of this utility model of a fast-charging vehicle charger includes a power input module, a filtering module, a DC-DC converter module, a fast-charging control module, a communication module, a power amplifier module, a human body sensing module, an LED lighting module, a first buck module, a second buck module, a dual USB output module, and a Type-C output module. The power input module is used to connect to the vehicle's cigarette lighter socket for power. The filtering module filters the power input to the power input module. The DC-DC converter module performs voltage conversion on the filtered power. The fast-charging control module controls the charging process. The communication module controls the power amplifier module, the human body sensing module, and the LED lighting module, and communicates with external systems. The power amplifier module plays preset prompts. The human body sensing module senses passengers. The LED lighting module provides illumination. The first and second buck modules both step down the voltage to match subsequent circuitry. The dual USB output module performs slow charging. The Type-C output module performs fast charging.

[0060] By setting up dual USB output modules and a Type-C output module to work together, the system can handle standard charging and high-power fast charging needs separately, thus avoiding output interference.

[0061] The power input module, filter module, DC-DC converter module, fast charging control module, and communication module are connected in sequence. The input terminal of the first step-down module is connected to the output terminal of the DC-DC converter module, and the output terminal is connected to the input terminal of the communication module, the input terminal of the power amplifier module, and the input terminal of the second step-down module. The output terminal of the second step-down module is connected to the input terminal of the human body sensor module and the input terminal of the LED lighting module. The communication module is connected to the control terminals of the power amplifier module, the human body sensor module, and the LED lighting module, respectively. The input terminal of the dual USB output module is connected to the output terminal of the filter module. The input terminal of the Type-C output module is connected to the output terminal of the fast charging control module.

[0062] The filtering module includes a fuse F1, a clamping diode D1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a polarized capacitor CE1, a terminal T1, a terminal T3, and a terminal T4.

[0063] By equipping the filter module with fuse F1 and clamping diode D1, input overcurrent or reverse voltage surges are prevented; a multi-stage filter network is formed by connecting multiple capacitors in parallel (C1-C5, CE1) to suppress power supply noise and surges; combined with capacitors C20-C22, CE2, etc. in the DCDC module, a high-frequency filter is formed to further stabilize the output and avoid voltage fluctuations affecting subsequent circuits.

[0064] The clamping diode D1, capacitors C1, C2, C3, C4, C5, and polarized capacitor CE1 are connected in parallel. The positive terminal is connected to one end of fuse F1, the input terminal of the dual USB output module, and the input terminal of the DCDC module. The negative terminal is connected to terminals T3 and T4 and grounded. The other end of fuse F1 is connected to terminal T1. Terminals T1, T3, and T4 are all connected to the output terminal of the power input module.

[0065] The DC-DC module includes a buck-boost control chip U2, a MOSFET Q2, a MOSFET Q3, a MOSFET Q4, a MOSFET Q5, a MOSFET Q10, an inductor L3, a diode D8, a resistor R3, a resistor R4, a resistor R11, a resistor R12, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R19, a resistor R24, a resistor R25, a resistor R27, a resistor R29, a resistor R33, a resistor R35, a resistor R37, a resistor R38, a resistor R39, a resistor R40, and a... Resistor R41, resistor R43, resistor R44, resistor R45, resistor R76, resistor R77, resistor R78, surface mount resistor RS1, surface mount resistor RS2, capacitor C12, capacitor C13, capacitor C14, capacitor C15, capacitor C16, capacitor C17, capacitor C18, capacitor C19, capacitor C20, capacitor C21, capacitor C22, capacitor C23, capacitor C24, capacitor C28, capacitor C31, capacitor C32, capacitor C33, capacitor C34, capacitor C36, and polarized capacitor CE2;

[0066] The current switching is handled by multiple MOSFETs (such as Q2-Q5, Q10) distributed in a way that is combined with surface mount resistors (RS1 / RS2) for current sharing, which reduces the risk of local heat generation. The capacitor matrix (such as C15-C19, CE2) is distributed to reduce the impact of high frequency interference on the control chip.

[0067] By using multiple resistors in parallel (such as R37 / R39 / R40) in key modules (such as DC-DC modules and fast charging control modules) to share the current, and in conjunction with redundant capacitor banks (C12-C14, etc.), the ability to resist transient interference is effectively enhanced.

[0068] Pin 1 of the buck-boost control chip U2 is connected to one end of resistor R14; pin 3 is connected to one end of resistor R25 and one end of capacitor C31; pin 4 is connected to one end of resistor R24 ​​and the other end of capacitor C31; pin 6 is connected to one end of resistor R78 and one end of capacitor C32; pins 7 and 9 are connected to the other end of capacitor C32 and one end of capacitor C34 and grounded; pin 8 is connected to the other end of capacitor C34; pin 10 is connected to one end of resistor R45 and the input terminal of the fast charging control module; pin 11 is connected to one end of resistor R44 and the input terminal of the fast charging control module; pin 13 is connected to one end of resistor R41; pin 14 is connected to one end of resistor R43; pin 15 is connected to one end of resistor R38 and one end of capacitor C33; pin 16... Pin 17 is connected to one end of resistor R39; pin 19 is connected to one end of resistor R33 and one end of capacitor C28; pin 20 is connected to the other end of capacitor C28 and one end of resistor R29; pin 21 is connected to one end of resistor R16; pin 22 is connected to one end of resistor R11; pin 23 is connected to one end of inductor L3, one end of capacitor C24, one end of resistor R4, the drain of MOSFET Q5, and the source of MOSFET Q2; pin 24 is connected to one end of resistor R17; pin 26 is connected to one end of resistor R12; pin 27 is connected to the other end of inductor L3, one end of capacitor C23, one end of resistor R3, the drain of MOSFET Q4, and the source of MOSFET Q3; pin 28 is connected to one end of resistor R15.

[0069] After capacitors C20, C21, and C22 are connected in parallel, one end is connected to one end of surface mount resistor RS1, one end of resistor R37, pin 5 of buck-boost control chip U2, and the output terminal of the filter module, while the other end is grounded. After capacitors C15, C16, C17, C18, and C19 are connected in parallel with polarized capacitor CE2, the positive terminal is connected to one end of surface mount resistor RS2, one end of resistor R19, one end of resistor R33, pin 18 of buck-boost control chip U2, and the fast charging control module, while the negative terminal is grounded.

[0070] The gate (G) of MOSFET Q10 is connected to one end of resistor R76 and one end of resistor R77, the source (S) is connected to the other end of resistor R77 and grounded, and the drain (D) is connected to the other end of resistor R37. The other end of resistor R76 is connected to the other end of resistor R78. The other end of resistor R44 is connected to the other end of resistor R45. The drain (D) of MOSFET Q3 is connected to the other end of surface-mount resistor RS1, and the gate (G) is connected to the other end of resistor R15. The gate (G) of MOSFET Q4 is connected to the other end of resistor R12. The other end of resistor R14 is connected to the other end of capacitor C23. One end of capacitor C12 is connected to the other end of resistor R3, and the other end is connected to one end of capacitor C13 and grounded. The other end of capacitor C13... One end of the resistor R16 is connected to resistor R4; the other end of the resistor R16 is connected to the other end of capacitor C24; the gate of the MOSFET Q5 is connected to the other end of resistor R17; the gate of the MOSFET Q2 is connected to the other end of resistor R11, and the drain is connected to one end of capacitor C14 and the other end of surface mount resistor RS2; one end of resistor R27 is connected to the other end of resistor R19, and the other end is connected to the other end of resistor R35, one end of resistor R40, and the output terminal of diode D8; the input terminal of diode D8 is connected to the fast charging control module; the other end of resistor R40 is connected to the other ends of resistor R41, resistor R43, capacitor C36, capacitor C33, and resistor R39.

[0071] The buck-boost control chip U2 is a CPS5206. By using the CPS5206 buck-boost control chip in the DC-DC module, it supports dynamic adjustment of the input voltage, adapts to fluctuations in vehicle power supply (such as 12V / 24V system compatibility), and achieves high-efficiency conversion in conjunction with multi-stage MOSFETs and inductor L3, effectively reducing energy loss.

[0072] The fast charging control module includes a fast charging protocol control chip U1, a thermistor NTC1, a MOSFET Q7, a surface mount resistor RS3, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R13, a resistor R20, a resistor R23, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C25, a capacitor C26, a capacitor C37, a capacitor C38, and a capacitor C48.

[0073] By integrating a thermistor NTC1 into the fast charging control module to monitor the temperature in real time, and feeding back the voltage to the fast charging protocol control chip U1 through resistors R13 / R10, the over-temperature power reduction or shutdown protection is triggered, thereby greatly improving charging safety.

[0074] Pin 1 of the fast charging protocol control chip U1 is connected to one end of resistor R13, pin 2 is connected to one end of resistor R9 and one end of resistor R10, pin 3 is connected to one end of capacitor C25, pin 4 is connected to one end of capacitor C26, pin 5 is connected to one end of resistor R20, one end of resistor R23 and DC-DC module, pin 8 is connected to one end of capacitor C48, pins 9, 10 and 11 are connected to DC-DC module, and pins 13, 14, 15, 16, 17, 20, 21, 22 and 23 are respectively connected to one end of resistor R34, resistor R32, resistor R22, resistor R21, resistor R18, resistor R8, resistor R7, resistor R6 and resistor R5;

[0075] One end of the thermistor NTC1 is connected to the other end of resistor R13, and the other end is connected to the other end of resistor R10; the other end of resistor R9 is connected to the DC-DC module; the other end of resistor R20 is connected to the other end of capacitor C25; the other end of resistor R23 is connected to the other end of capacitor C26; one end of surface mount resistor RS3 is connected to the other end of resistor R34, and the other end is connected to the other ends of resistors R22 and R32, as well as the drain of MOSFET Q7; capacitors C37 and C38 are connected in parallel, with one end connected to the source of MOSFET Q7, the other end of resistor R18, and the Type-C output module, and the other end grounded; the gate of MOSFET Q7 is connected to the other end of resistor R21; capacitors C8 and C10 are connected in parallel, with one end connected to the other ends of resistors R5 and R6, and the other end grounded; capacitors C9 and C19 are connected in parallel, with one end connected to the other ends of resistors R7 and R8, and the other end grounded.

[0076] The fast charging protocol control chip U1 is model CPS8841. By setting the CPS8841 chip in the fast charging control module, mainstream fast charging protocols such as PD and QC can be identified. Combined with the surface mount resistor RS3 and MOSFET Q7, the Type C output current / voltage can be dynamically adjusted to meet the fast charging needs of mobile phones, tablets and other devices.

[0077] The power amplifier module includes a power amplifier chip U5, a transformer BT1, a transformer BT2, a speaker interface J3, a polarized capacitor CE6, a capacitor C7, a capacitor C64, a capacitor C67, a capacitor C69, a capacitor C71, a capacitor C72, and a capacitor C79.

[0078] Energy storage and filtering are provided by setting polarized capacitor CE6 and parallel capacitors (C64 / C67, etc.) in the power amplifier module to prevent audio output overload.

[0079] The power amplifier module provides audio signal amplification through transformers BT1 / BT2 and speaker interface J3, integrating car audio expansion capabilities.

[0080] Pins 1 and 5 of the power amplifier chip U5 are connected to capacitors C67, C69, and C79, as well as the output terminal of the first step-down module. Pin 2 is connected to one end of capacitor C7, pin 3 is connected to the other end of capacitor C7, pins 4, 6, and 7 are connected to the communication module, pin 8 is connected to one end of transformer BT2, and pin 9 is connected to one end of transformer BT1. After capacitor C64 is connected in parallel with polarized capacitor CE6, its positive terminal is connected to pin 10 of the power amplifier chip U5, and its negative terminal is grounded.

[0081] Pin 1 of the speaker interface J3 is connected to one end of capacitor C72 and the other end of transformer BT2, and pin 2 is connected to one end of capacitor C71 and the other end of transformer BT1; the other end of capacitor C71 is connected to the other end of capacitor C72.

[0082] The human body sensing module includes an infrared sensor U6, a MOSFET Q8, a resistor R60, a resistor R61, a resistor R62, a resistor R74, and a resistor R75.

[0083] Low-power standby is achieved by using MOSFET Q8 and a resistor network (R60 / R74, etc.), activating the light only when a human body is detected, thus saving energy.

[0084] Pin 1 of the infrared sensor U6 is connected to one end of resistor R62 and grounded; pin 2 is connected to the other end of resistor R62 and one end of resistor R61; pin 3 is connected to one end of resistor R60, the other end of resistor R61 and the second step-down module; pin 4 is connected to one end of resistor R74 and the gate of MOSFET Q8; the source of MOSFET Q8 is connected to the other end of resistor R74, and the drain is connected to one end of resistor R75, the other end of resistor R60 and the communication module.

[0085] The second step-down module includes a step-down chip U7, a capacitor C51, a capacitor C68, and a capacitor C70;

[0086] The first step-down module supplies power to the medium-voltage modules of the communication module and power amplifier module, and the second step-down module further reduces the voltage to a low voltage to supply the human body sensing module and LED lighting module, thereby achieving voltage level matching and reducing cross-interference.

[0087] Pin 1 of the step-down chip U7 is connected to one end of capacitor C51, one end of capacitor C68, and one end of capacitor C70 and grounded. Pin 2 is connected to the other end of capacitor C68, the human body sensing module, and the LED lighting module. Pin 3 is connected to the other end of capacitor C51, the other end of capacitor C70, and the output terminal of the first step-down module.

[0088] The dual USB output module includes a step-down chip U10, a power output interface USB1, a power output interface USB2, a clamping diode D13, a clamping diode D14, a light-emitting diode LEDK, a polarized capacitor CE3, a polarized capacitor CE5, an inductor L5, a resistor R46, a resistor R49, a resistor R52, a resistor R53, a resistor R54, a resistor R55, a capacitor C39, a capacitor C52, a capacitor C53, a capacitor C54, a capacitor C55, a capacitor C56, a capacitor C73, a capacitor C74, a capacitor C75, and a capacitor C76.

[0089] The dual USB modules integrate LEDK, and the charging status is displayed by current limiting through resistor R55, providing intuitive operation feedback.

[0090] Pins 2 and 3 of the step-down chip U10 are connected to one end of resistor R49. Pin 4 is connected to one end of resistor R55, one end of clamping diode D14, one end of capacitor C76, one end of capacitor C75, pin 1 of power output interface USB2, one end of clamping diode D13, one end of capacitor C74, one end of capacitor C73, and pin 1 of power output interface USB1. Pin 7 is connected to one end of resistor R54. Pin 8 is connected to one end of resistor R46, one end of inductor L5, and one end of capacitor C54.

[0091] After capacitor C56 is connected in parallel with polarized capacitor CE3, its positive terminal is connected to pin 6 of buck chip U10 and the filter module, and its negative terminal is connected to pin 5 of buck chip U10 and grounded; the other end of resistor R54 is connected to the other end of capacitor C54; one end of capacitor C39 is connected to the other end of resistor R46, and the other end is grounded.

[0092] The polarized capacitors CE5, C55, and C53 are connected in parallel. The positive terminal is connected to the other end of inductor L5, one end of capacitor C2, one end of resistor R52, and one end of resistor R49. The negative terminal is connected to one end of resistor R53, the other end of capacitor C76, the other end of capacitor C75, and pin 4 of power output interface USB2. The other end of resistor R52 is connected to the other end of resistor R53 and the other end of capacitor C52. The input terminal of LEDK is connected to the other end of resistor R55. Pin 4 of power output interface USB1 is connected to the other end of capacitor C74 and the other end of capacitor C73 and grounded.

[0093] Working principle of this utility model:

[0094] The power input module obtains a 12V power input from the vehicle's cigarette lighter, which is then filtered by the filtering module and output as 5V to low-power devices via the dual USB output module. The DC-DC module converts the voltage of the power output from the filtering module and outputs it to the first step-down module. The first step-down module reduces the voltage to 4.2V to power the communication module and the power amplifier module, and outputs it to the second step-down module. The second step-down module further reduces the voltage to 3.3V to power the human body sensing module and the LED lighting module. The fast charging control module selects the protocol for the voltage output from the DC-DC module and outputs power through the Type-C output module.

[0095] In summary, the advantages of this utility model are as follows:

[0096] 1. The system comprises a power input module, a filter module, a DC-DC converter module, a fast charging control module, a communication module, a power amplifier module, a human body sensor module, an LED lighting module, a first buck converter module, a second buck converter module, a dual USB output module, and a Type-C output module. The power input module, filter module, DC-DC converter module, fast charging control module, and communication module are connected sequentially. The input terminal of the first buck converter module is connected to the DC-DC converter module, and its output terminal is connected to the communication module, the power amplifier module, and the second buck converter module. The output terminal of the second buck converter module is connected to the human body sensor module and the LED lighting module. The communication module is connected to the control terminals of the power amplifier module, the human body sensor module, and the LED lighting module, respectively. The control terminal of the module is connected; the input terminal of the dual USB output module is connected to the filter module; the input terminal of the Type-C output module is connected to the fast charging control module; when the human body sensor module does not detect a passenger, the car charger can enter a low-power mode; when the lighting inside the car is poor, the LED lighting module can be turned on to indicate the location of the car charger to the passenger, and the power amplifier module plays a preset audio prompt to the passenger that the car charger can be used for charging, so as to avoid the passenger missing the opportunity to charge the mobile terminal device in time; the filter module filters the input power supply, effectively reducing electromagnetic interference, and ultimately greatly reducing the power consumption of the car charger, greatly improving the stability, durability and user experience of the car charger.

[0097] 2. By setting the DC-DC module to use the CPS5206 buck-boost control chip, it supports dynamic adjustment of input voltage to adapt to fluctuations in vehicle power supply (such as 12V / 24V system compatibility). With the help of multi-stage MOSFETs and inductor L3, it achieves high-efficiency conversion and effectively reduces energy loss.

[0098] 3. By setting up dual USB output modules and a Type-C output module to work together, the standard charging and high-power fast charging needs are handled separately, avoiding output interference.

[0099] 4. By setting up the CPS8841 chip in the fast charging control module, the mainstream fast charging protocols such as PD and QC are recognized. Combined with the surface mount resistor RS3 and MOSFET Q7, the Type C output current / voltage is dynamically adjusted to meet the fast charging needs of mobile phones, tablets and other devices.

[0100] 5. By equipping the filter module with fuse F1 and clamping diode D1, input overcurrent or reverse voltage surges are prevented; a multi-stage filter network is formed by connecting multiple capacitors in parallel (C1-C5, CE1) to suppress power supply noise and surges; combined with capacitors C20-C22, CE2, etc. in the DCDC module, a high-frequency filter is formed to further stabilize the output and avoid voltage fluctuations affecting subsequent circuits.

[0101] 6. By integrating a thermistor NTC1 into the fast charging control module to monitor the temperature in real time, and feeding back the voltage to the fast charging protocol control chip U1 through resistors R13 / R10, the over-temperature power reduction or shutdown protection is triggered, thereby greatly improving charging safety.

[0102] 7. By setting polarized capacitor CE6 and parallel capacitors (C64 / C67, etc.) in the power amplifier module, energy storage and filtering are provided to prevent audio output overload.

[0103] 8. Low-power standby is achieved through MOSFET Q8 and a resistor network (R60 / R74, etc.), activating the lighting only when a human body is detected, thus saving energy.

[0104] 9. The power amplifier module provides audio signal amplification through transformers BT1 / BT2 and speaker interface J3, integrating car audio expansion capabilities.

[0105] 10. The first step-down module supplies power to the medium-voltage demand modules of the communication module and power amplifier module, and the second step-down module further reduces the voltage to a low voltage to supply the human body sensing module and LED lighting module, thereby achieving voltage level matching and reducing cross interference.

[0106] 11. Current switching is distributed by multiple MOSFETs (such as Q2-Q5, Q10) and current sharing is achieved with surface mount resistors (RS1 / RS2) to reduce the risk of local heat generation; the impact of high-frequency interference on the control chip is reduced by the distributed layout of capacitor matrix (such as C15-C19, CE2).

[0107] 12. By using multiple resistors in parallel (such as R37 / R39 / R40) in key modules (such as DC-DC modules and fast charging control modules) to share the current, and in conjunction with redundant capacitor banks (C12-C14, etc.), the ability to resist transient interference is effectively enhanced.

[0108] 13. The LEDK is integrated through the dual USB module, and the charging status is displayed by current limiting through resistor R55, providing intuitive operation feedback.

[0109] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A fast-charging vehicle charger, characterized in that: It includes a power input module, a filter module, a DC-DC module, a fast charging control module, a communication module, a power amplifier module, a human body sensing module, an LED lighting module, a first step-down module, a second step-down module, a dual USB output module, and a Type-C output module; The power input module, filter module, DC-DC converter module, fast charging control module, and communication module are connected in sequence. The input terminal of the first step-down module is connected to the output terminal of the DC-DC converter module, and the output terminal is connected to the input terminal of the communication module, the input terminal of the power amplifier module, and the input terminal of the second step-down module. The output terminal of the second step-down module is connected to the input terminal of the human body sensor module and the input terminal of the LED lighting module. The communication module is connected to the control terminals of the power amplifier module, the human body sensor module, and the LED lighting module, respectively. The input terminal of the dual USB output module is connected to the output terminal of the filter module. The input terminal of the Type-C output module is connected to the output terminal of the fast charging control module.

2. The fast-charging vehicle charger as described in claim 1, characterized in that: The filtering module includes a fuse F1, a clamping diode D1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a polarized capacitor CE1, a terminal T1, a terminal T3, and a terminal T4. The clamping diode D1, capacitors C1, C2, C3, C4, C5, and polarized capacitor CE1 are connected in parallel. The positive terminal is connected to one end of fuse F1, the input terminal of the dual USB output module, and the input terminal of the DCDC module. The negative terminal is connected to terminals T3 and T4 and grounded. The other end of fuse F1 is connected to terminal T1. Terminals T1, T3, and T4 are all connected to the output terminal of the power input module.

3. A fast-charging vehicle charger as described in claim 1, characterized in that: The DC-DC module includes a buck-boost control chip U2, a MOSFET Q2, a MOSFET Q3, a MOSFET Q4, a MOSFET Q5, a MOSFET Q10, an inductor L3, a diode D8, a resistor R3, a resistor R4, a resistor R11, a resistor R12, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R19, a resistor R24, a resistor R25, a resistor R27, a resistor R29, a resistor R33, a resistor R35, a resistor R37, a resistor R38, a resistor R39, a resistor R40, and a... Resistor R41, resistor R43, resistor R44, resistor R45, resistor R76, resistor R77, resistor R78, surface mount resistor RS1, surface mount resistor RS2, capacitor C12, capacitor C13, capacitor C14, capacitor C15, capacitor C16, capacitor C17, capacitor C18, capacitor C19, capacitor C20, capacitor C21, capacitor C22, capacitor C23, capacitor C24, capacitor C28, capacitor C31, capacitor C32, capacitor C33, capacitor C34, capacitor C36, and polarized capacitor CE2; Pin 1 of the buck-boost control chip U2 is connected to one end of resistor R14; pin 3 is connected to one end of resistor R25 and one end of capacitor C31; pin 4 is connected to one end of resistor R24 ​​and the other end of capacitor C31; pin 6 is connected to one end of resistor R78 and one end of capacitor C32; pins 7 and 9 are connected to the other end of capacitor C32 and one end of capacitor C34 and grounded; pin 8 is connected to the other end of capacitor C34; pin 10 is connected to one end of resistor R45 and the input terminal of the fast charging control module; pin 11 is connected to one end of resistor R44 and the input terminal of the fast charging control module; pin 13 is connected to one end of resistor R41; pin 14 is connected to one end of resistor R43; pin 15 is connected to one end of resistor R38 and one end of capacitor C33; pin 16... Pin 17 is connected to one end of resistor R39; pin 19 is connected to one end of resistor R33 and one end of capacitor C28; pin 20 is connected to the other end of capacitor C28 and one end of resistor R29; pin 21 is connected to one end of resistor R16; pin 22 is connected to one end of resistor R11; pin 23 is connected to one end of inductor L3, one end of capacitor C24, one end of resistor R4, the drain of MOSFET Q5, and the source of MOSFET Q2; pin 24 is connected to one end of resistor R17; pin 26 is connected to one end of resistor R12; pin 27 is connected to the other end of inductor L3, one end of capacitor C23, one end of resistor R3, the drain of MOSFET Q4, and the source of MOSFET Q3; pin 28 is connected to one end of resistor R15. After capacitors C20, C21, and C22 are connected in parallel, one end is connected to one end of surface mount resistor RS1, one end of resistor R37, pin 5 of buck-boost control chip U2, and the output terminal of the filter module, while the other end is grounded. After capacitors C15, C16, C17, C18, and C19 are connected in parallel with polarized capacitor CE2, the positive terminal is connected to one end of surface mount resistor RS2, one end of resistor R19, one end of resistor R33, pin 18 of buck-boost control chip U2, and the fast charging control module, while the negative terminal is grounded. The gate (G) of MOSFET Q10 is connected to one end of resistor R76 and one end of resistor R77, the source (S) is connected to the other end of resistor R77 and grounded, and the drain (D) is connected to the other end of resistor R37. The other end of resistor R76 is connected to the other end of resistor R78. The other end of resistor R44 is connected to the other end of resistor R45. The drain (D) of MOSFET Q3 is connected to the other end of surface-mount resistor RS1, and the gate (G) is connected to the other end of resistor R15. The gate (G) of MOSFET Q4 is connected to the other end of resistor R12. The other end of resistor R14 is connected to the other end of capacitor C23. One end of capacitor C12 is connected to the other end of resistor R3, and the other end is connected to one end of capacitor C13 and grounded. The other end of capacitor C13... One end of the resistor R16 is connected to resistor R4; the other end of the resistor R16 is connected to the other end of capacitor C24; the gate of the MOSFET Q5 is connected to the other end of resistor R17; the gate of the MOSFET Q2 is connected to the other end of resistor R11, and the drain is connected to one end of capacitor C14 and the other end of surface mount resistor RS2; one end of resistor R27 is connected to the other end of resistor R19, and the other end is connected to the other end of resistor R35, one end of resistor R40, and the output terminal of diode D8; the input terminal of diode D8 is connected to the fast charging control module; the other end of resistor R40 is connected to the other ends of resistor R41, resistor R43, capacitor C36, capacitor C33, and resistor R39.

4. A fast-charging vehicle charger as described in claim 3, characterized in that: The buck-boost control chip U2 is model CPS5206.

5. A fast-charging vehicle charger as described in claim 1, characterized in that: The fast charging control module includes a fast charging protocol control chip U1, a thermistor NTC1, a MOSFET Q7, a surface mount resistor RS3, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R13, a resistor R20, a resistor R23, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C25, a capacitor C26, a capacitor C37, a capacitor C38, and a capacitor C48. Pin 1 of the fast charging protocol control chip U1 is connected to one end of resistor R13, pin 2 is connected to one end of resistor R9 and one end of resistor R10, pin 3 is connected to one end of capacitor C25, pin 4 is connected to one end of capacitor C26, pin 5 is connected to one end of resistor R20, one end of resistor R23 and DC-DC module, pin 8 is connected to one end of capacitor C48, pins 9, 10 and 11 are connected to DC-DC module, and pins 13, 14, 15, 16, 17, 20, 21, 22 and 23 are respectively connected to one end of resistor R34, resistor R32, resistor R22, resistor R21, resistor R18, resistor R8, resistor R7, resistor R6 and resistor R5; One end of the thermistor NTC1 is connected to the other end of resistor R13, and the other end is connected to the other end of resistor R10; the other end of resistor R9 is connected to the DC-DC module; the other end of resistor R20 is connected to the other end of capacitor C25; the other end of resistor R23 is connected to the other end of capacitor C26; one end of surface mount resistor RS3 is connected to the other end of resistor R34, and the other end is connected to the other ends of resistors R22 and R32, as well as the drain of MOSFET Q7; capacitors C37 and C38 are connected in parallel, with one end connected to the source of MOSFET Q7, the other end of resistor R18, and the Type-C output module, and the other end grounded; the gate of MOSFET Q7 is connected to the other end of resistor R21; capacitors C8 and C10 are connected in parallel, with one end connected to the other ends of resistors R5 and R6, and the other end grounded; capacitors C9 and C19 are connected in parallel, with one end connected to the other ends of resistors R7 and R8, and the other end grounded.

6. A fast-charging vehicle charger as described in claim 5, characterized in that: The fast charging protocol control chip U1 is model CPS8841.

7. A fast-charging vehicle charger as described in claim 1, characterized in that: The power amplifier module includes a power amplifier chip U5, a transformer BT1, a transformer BT2, a speaker interface J3, a polarized capacitor CE6, a capacitor C7, a capacitor C64, a capacitor C67, a capacitor C69, a capacitor C71, a capacitor C72, and a capacitor C79. Pins 1 and 5 of the power amplifier chip U5 are connected to capacitors C67, C69, and C79, as well as the output terminal of the first step-down module. Pin 2 is connected to one end of capacitor C7, pin 3 is connected to the other end of capacitor C7, pins 4, 6, and 7 are connected to the communication module, pin 8 is connected to one end of transformer BT2, and pin 9 is connected to one end of transformer BT1. After capacitor C64 is connected in parallel with polarized capacitor CE6, its positive terminal is connected to pin 10 of the power amplifier chip U5, and its negative terminal is grounded. Pin 1 of the speaker interface J3 is connected to one end of capacitor C72 and the other end of transformer BT2, and pin 2 is connected to one end of capacitor C71 and the other end of transformer BT1; the other end of capacitor C71 is connected to the other end of capacitor C72.

8. A fast-charging vehicle charger as described in claim 1, characterized in that: The human body sensing module includes an infrared sensor U6, a MOSFET Q8, a resistor R60, a resistor R61, a resistor R62, a resistor R74, and a resistor R75. Pin 1 of the infrared sensor U6 is connected to one end of resistor R62 and grounded; pin 2 is connected to the other end of resistor R62 and one end of resistor R61; pin 3 is connected to one end of resistor R60, the other end of resistor R61 and the second step-down module; pin 4 is connected to one end of resistor R74 and the gate of MOSFET Q8; the source of MOSFET Q8 is connected to the other end of resistor R74, and the drain is connected to one end of resistor R75, the other end of resistor R60 and the communication module.

9. A fast-charging vehicle charger as described in claim 1, characterized in that: The second step-down module includes a step-down chip U7, a capacitor C51, a capacitor C68, and a capacitor C70; Pin 1 of the step-down chip U7 is connected to one end of capacitor C51, one end of capacitor C68, and one end of capacitor C70 and grounded. Pin 2 is connected to the other end of capacitor C68, the human body sensing module, and the LED lighting module. Pin 3 is connected to the other end of capacitor C51, the other end of capacitor C70, and the output terminal of the first step-down module.

10. A fast-charging vehicle charger as described in claim 1, characterized in that: The dual USB output module includes a step-down chip U10, a power output interface USB1, a power output interface USB2, a clamping diode D13, a clamping diode D14, a light-emitting diode LEDK, a polarized capacitor CE3, a polarized capacitor CE5, an inductor L5, a resistor R46, a resistor R49, a resistor R52, a resistor R53, a resistor R54, a resistor R55, a capacitor C39, a capacitor C52, a capacitor C53, a capacitor C54, a capacitor C55, a capacitor C56, a capacitor C73, a capacitor C74, a capacitor C75, and a capacitor C76. Pins 2 and 3 of the step-down chip U10 are connected to one end of resistor R49. Pin 4 is connected to one end of resistor R55, one end of clamping diode D14, one end of capacitor C76, one end of capacitor C75, pin 1 of power output interface USB2, one end of clamping diode D13, one end of capacitor C74, one end of capacitor C73, and pin 1 of power output interface USB1. Pin 7 is connected to one end of resistor R54. Pin 8 is connected to one end of resistor R46, one end of inductor L5, and one end of capacitor C54. After capacitor C56 is connected in parallel with polarized capacitor CE3, its positive terminal is connected to pin 6 of buck chip U10 and the filter module, and its negative terminal is connected to pin 5 of buck chip U10 and grounded; the other end of resistor R54 is connected to the other end of capacitor C54; one end of capacitor C39 is connected to the other end of resistor R46, and the other end is grounded. The polarized capacitors CE5, C55, and C53 are connected in parallel. The positive terminal is connected to the other end of inductor L5, one end of capacitor C2, one end of resistor R52, and one end of resistor R49. The negative terminal is connected to one end of resistor R53, the other end of capacitor C76, the other end of capacitor C75, and pin 4 of power output interface USB2. The other end of resistor R52 is connected to the other end of resistor R53 and the other end of capacitor C52. The input terminal of LEDK is connected to the other end of resistor R55. Pin 4 of power output interface USB1 is connected to the other end of capacitor C74 and the other end of capacitor C73 and grounded.

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