Vehicle-mounted high-power discharge socket

Abstract

The utility model discloses a vehicle-mounted high-power discharge socket, which comprises a base and a panel, the panel is provided with an alternating current / direct current output port, a reset button and a display lamp, the alternating current / direct current output port comprises an alternating current jack and a USB (Universal Serial Bus) interface, and the panel is also pivotally connected with a flip cover for protecting the jack. A reed switch is arranged on one side of the jack, a magnetic block matched with a reed on one side of the jack is arranged on the inner side of the flip cover, and on-off of an internal circuit of the jack is achieved through opening and closing of the flip cover. The socket at least has the prominent effects that the socket has the functions of current protection and over-temperature protection, input voltage detection and leakage protection, and can cut off a circuit in time when current is overloaded or over-voltage or the temperature is relatively high, so that the use safety of the socket is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive socket control technology, specifically relating to a vehicle-mounted high-power discharge socket. Background Technology

[0002] Cars are an indispensable means of transportation in people's lives, and an inverter is a device that converts direct current (DC) energy into alternating current (AC). In-vehicle inverters are widely used in electric vehicles, gasoline vehicles, and hybrid vehicles. They convert the DC energy stored in the vehicle to power the vehicle's AC devices. Currently, the output sockets of in-vehicle inverters on the market have relatively limited functionality. During use, overload or overheating can easily lead to component damage, safety risks, and system instability. Utility Model Content

[0003] In view of the above-mentioned defects in the existing technology, the purpose of this utility model is to provide a vehicle-mounted high-power discharge socket, which has overcurrent protection, overtemperature protection and other functions, and can effectively improve the safety of the socket.

[0004] The objective of this utility model will be achieved through the following technical solution:

[0005] A vehicle-mounted high-power discharge socket includes a base and a panel. The panel is provided with an electrical output port and a reset button. The electrical output port includes a socket and a USB interface. The panel is also pivotally connected to a flip cover for protecting the socket. A Hall element is provided on one side of the socket. A magnetic block is provided on the inside of the flip cover for matching with the Hall element on one side of the socket. The opening and closing of the flip cover realizes the switching on and off of the internal circuit of the socket. A light guide ring is provided around the USB interface.

[0006] Preferably, the socket is further provided with a circuit control mechanism, which includes a high-voltage connector, a low-voltage connector, and an MCU; the high-voltage connector is connected to the socket body's socket end through a current protection circuit, one end of the MCU is connected to the SW interface of the low-voltage connector through an enable drive circuit; the other end of the MCU is connected to the Vbat socket pin of the low-voltage connector through a voltage converter; the GND socket pin of the low-voltage connector is also connected to a Hall element, the other end of which is connected to a first resistor and the EN terminal of the voltage converter; the low-voltage connector is also connected to a USB charging port.

[0007] Preferably, the detection terminal of the current protection circuit is connected to the MCU, and the current protection circuit includes an AC voltage detection circuit and a leakage current detection circuit.

[0008] Preferably, a second resistor is also connected between the reed switch and the GND socket pin of the low-voltage connector.

[0009] Preferably, the GND USB pin and IGN pin of the low-voltage connector are respectively connected to the PCBA circuit board, and the PCBA circuit board is connected to the USB charging port.

[0010] Preferably, the USB charging port includes a USB-A charging port and a USB-C charging port.

[0011] Preferably, the MCU is also connected to a reset button, an indicator light, and a temperature sensor.

[0012] Preferably, the high-voltage connector is connected to the socket end via a relay, and the other end of the relay is connected to the MCU.

[0013] Preferably, a current sensor connected to the MCU is also provided between the relay and the high-voltage connector.

[0014] Preferably, a LIN communication mechanism is connected between the MCU and the low-voltage connector.

[0015] Preferably, the AC voltage detection circuit includes a first integrated circuit element connected to a high-voltage connector. The third pin of the first integrated circuit element is connected to the negative power supply terminal of the first operational amplifier via a second resistor, and the fourth pin is connected to the positive power supply terminal of the first operational amplifier via a second capacitor and a fifth resistor. The power supply voltage of the first operational amplifier is 3.3V. The output terminal of the first operational amplifier is connected to the MCU via a third resistor. A first capacitor and a first resistor are also connected in parallel between the output terminal and the input terminal of the second resistor. A fourth resistor is connected in parallel between the third pin and the fourth pin of the first integrated circuit element. The output terminal of the fifth resistor is connected to a sixth capacitor and a ninth resistor connected in parallel.

[0016] Preferably, the leakage current detection circuit includes a sixth detection resistor connected to a ground fault circuit breaker, the sixth detection resistor being connected to the negative power supply terminal of a first detection amplifier via a fourth detection capacitor, the first detection amplifier being connected to the positive power supply terminal of a second detection amplifier via a fifth detection resistor, the second detection amplifier being connected to a first diode, and the first detection diode being connected to an MCU via a seventh detection resistor.

[0017] Preferably, a sixth detection capacitor and a second detection diode are connected in parallel with the sixth detection resistor; the live wire terminal of the ground fault circuit interrupter is connected to the fourth detection resistor and the eighth detection resistor respectively; the other end of the fourth detection resistor is connected to the first detection resistor; the other end of the eighth detection resistor is connected to the eleventh detection resistor; a third detection capacitor is connected in parallel with the output terminal of the eighth detection resistor and the output terminal of the fourth detection resistor; a first detection capacitor and a second detection resistor are connected in parallel between the output terminal of the fourth detection capacitor and the output terminal of the first detection amplifier; the output terminal of the first detection amplifier is connected to the negative power supply input terminal of the fourth detection amplifier; the positive power supply input terminal of the fourth detection amplifier is connected to the output terminal of the third detection amplifier; the output terminal of the fourth detection amplifier is connected to the first detection diode; a tenth detection resistor is also connected in parallel with the fourth detection amplifier; and a third detection resistor is connected in parallel between the positive power supply input terminal and the output terminal of the second detection amplifier.

[0018] The outstanding effects of this utility model are at least reflected in the following aspects: This utility model can have current protection and over-temperature protection functions, as well as input voltage detection and leakage protection functions. When the current is overloaded or the voltage is over-voltage or the temperature is high, it can cut off the circuit in time, which greatly improves the safety of the socket.

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the connection structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the AC voltage detection circuit in this utility model.

[0023] Figure 3 This is a schematic diagram of the leakage current detection circuit in this utility model. Detailed Implementation

[0024] This utility model proposes a vehicle-mounted high-power discharge socket, including a base and a panel. The panel is provided with an electrical output port and a reset button. The electrical output port includes a socket and a USB interface. A flip cover for protecting the socket is pivotally connected to the panel. A Hall element is provided on one side of the socket, and a magnetic block for matching the Hall element on the inside of the flip cover is provided. The opening and closing of the flip cover realizes the switching on and off of the internal circuit of the socket. A light guide ring is provided around the USB interface. In this embodiment, the electrical output port is an AC / DC output port, and the socket is an AC socket.

[0025] The base is equipped with a control mechanism, combined with Figures 1-3 As shown, the control mechanism includes a high-voltage connector 1, a low-voltage connector 2, and an MCU 3. The MCU 3 is connected to a reset button 38, indicator lights, and a temperature sensor 9. The indicator lights include a socket backlight 39 and a socket status indicator 30. Normally, the socket backlight 39 is constantly lit when powered on, while the socket status indicator 30 displays different colors depending on the status; for example, it is green under normal conditions and red in case of a fault. The status indicator 30 also flashes at different frequencies depending on the situation. The reset button 38 can be used to restart the system. The temperature sensor 9 is used to sense the internal temperature of the system. When the temperature exceeds the system's set temperature threshold, the output AC voltage will be cut off.

[0026] The high-voltage connector 1 is connected to the socket end of the socket body via a current protection circuit. The detection end of the current protection circuit is connected to the MCU 3. The current protection circuit includes an AC voltage detection circuit 31 and a leakage current detection circuit 32. The leakage current detection circuit 32 can cut off the output AC voltage when the current output leakage current is greater than 3.5mA.

[0027] In this embodiment, there are three sockets: a first socket 4, a second socket 5, and a third socket 6. The first socket 4 and the second socket 5 are 10A sockets, and the third socket 6 is a 16A socket.

[0028] Furthermore, the high-voltage connector 1 is connected to the socket end via a relay, and the other end of the relay is connected to the MCU 3. In this embodiment, the AC-L end of the high-voltage connector 1 is connected to the first current sensor 34, one end of the first current sensor 34 is connected to the first relay 36, and the other end of the first relay 36 is connected to the 10A socket. The AC-L end of the high-voltage connector 1 is also connected to the second current sensor 35, the other end of the second current sensor 35 is connected to the second relay 37, and the other end of the second relay 37 is connected to the 16A socket.

[0029] One end of the MCU 3 is connected to the SW interface of the low-voltage connector 2 via the enable drive circuit 23; the other end of the MCU 3 is connected to the Vbat socket pin of the low-voltage connector 2 via the voltage converter 21; the GND socket pin of the low-voltage connector 2 is connected to the second resistor R2, the other end of the second resistor R2 is connected to the reed switch 22, and the other end of the reed switch 22 is connected to the first resistor R1 and the EN terminal of the voltage converter 21. The reed switch 22 will be linked with the cover of the socket to achieve a preliminary judgment on whether external current is output based on whether the cover is open or closed. A LIN communication mechanism 25 is also connected between the MCU 3 and the low-voltage connector 2, through which the LIN signal is output via the low-voltage connector 2. In actual vehicle use, when the socket HUB malfunctions, a fault signal is sent to the BCM / host via the LIN chip, and the BCM / host immediately shuts off the high-voltage output to prevent the socket from becoming energized.

[0030] The low-voltage connector 2 is also connected to a USB charging port. Specifically, the GND USB pin and IGN pin of the low-voltage connector are respectively connected to the PCBA circuit board 24, and the PCBA circuit board 24 is connected to the USB charging port. The USB charging port includes a USB-A charging port 7 and a USB-C charging port 8.

[0031] The AC voltage detection circuit 31 includes a first integrated circuit element 311 connected to a high-voltage connector. Specifically, the AC_L terminal of the high-voltage connector is connected to the first pin of the first integrated circuit element 311, and the AC_N terminal of the high-voltage connector is connected to the second pin of the first integrated circuit element 311 via a sixth resistor 315 and a seventh resistor 316. The third pin of the first integrated circuit element 311 is connected to the negative power supply terminal of the first operational amplifier 314 via a second resistor 312, and the fourth pin is connected to the positive power supply terminal of the first operational amplifier 314 via a second capacitor and a fifth resistor 131. The power supply voltage of the first operational amplifier 314 is 3.3V. The output terminal of the first operational amplifier 314 is connected to the MCU via a third resistor. A first capacitor 317 and a first resistor 318 are connected in parallel between the output terminal of the second resistor 312 and the input terminal of the third resistor; a fourth resistor is connected in parallel between the third pin and the fourth pin of the first integrated circuit element 311; and the output terminal of the fifth resistor 313 is connected to the parallel sixth capacitor and the ninth resistor. The other end of the ninth resistor is connected to the eighth resistor, which has a supply voltage of 3.3V.

[0032] The leakage current detection circuit 32 includes a sixth detection resistor 321 connected to a ground fault circuit breaker. The sixth detection resistor 321 is connected to the negative power supply terminal of a first detection amplifier 323 via a fourth detection capacitor 322. The first detection amplifier 323 is connected to the positive power supply terminal of a second detection amplifier 325 via a fifth detection resistor 324. The second detection amplifier 325 is connected to a first diode 326, and the first detection diode 326 is connected to an MCU via a seventh detection resistor 327. A sixth detection capacitor and a second detection diode 3213 are connected in parallel to the sixth detection resistor 321. The live wire terminal of the ground fault circuit breaker is connected to the fourth detection resistor 3211 and an eighth detection resistor 3212. The other end of the fourth detection resistor 3211 is connected to the first detection resistor, and the other end of the eighth detection resistor 3212 is connected to an eleventh detection resistor. A third detection capacitor is connected in parallel to the output terminal of the eighth detection resistor 3212 and the output terminal of the fourth detection resistor 3211. A first detection capacitor and a second detection resistor are connected in parallel between the output terminal of the fourth detection capacitor 322 and the output terminal of the first detection amplifier 323. The output terminal of the first detection amplifier 323 is connected to the negative power supply input terminal of the fourth detection amplifier 329, the positive power supply input terminal of the fourth detection amplifier 329 is connected to the output terminal of the third detection amplifier 328, the output terminal of the fourth detection amplifier 329 is connected to the first detection diode 326, and a tenth detection resistor is also connected in parallel with the fourth detection amplifier 329. A third detection resistor is connected in parallel between the positive power supply input terminal and the output terminal of the second detection amplifier 325. The power supply voltage for both the first detection resistor and the first detection amplifier 323 is 3.3V.

[0033] To better understand this utility model, the working principle and operation of the vehicle-mounted high-power discharge socket will be explained below.

[0034] Under normal circumstances, the OBC will connect to the socket. The control mechanism will supply a 12V level to the OBC, causing it to output AC voltage for charging. Simultaneously, the backlight will illuminate upon detecting the AC voltage at the high-voltage output port. Closing the relay ensures AC voltage at the socket, and the indicator light will turn green.

[0035] If an error is detected, the relay will activate, resulting in no AC voltage at the socket. Simultaneously, a low-level signal is applied to the OBC, stopping its AC output. The indicator light will turn red and flash. After troubleshooting, pressing the reset button will restore a high-level signal to the OBC, enabling it to output AC voltage again.

[0036] When the lid is detected to be closed, a low-level signal is sent to the OBC, and the OBC stops outputting AC voltage. The background light turns off.

[0037] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A high-power discharge socket for a vehicle, characterized by: The base and the panel are provided with an electrical output port, a reset button, the electrical output port includes a jack and a USB interface, the panel is also pivotally connected with a flip cover for protecting the jack, one side of the jack is provided with a Hall element, the inner side of the flip cover is provided with a magnetic block for matching with the Hall element on one side of the jack, the opening and closing of the flip cover realizes the on-off of the internal circuit of the jack, and the outer circle of the USB interface is provided with a light guide ring.

2. The vehicle-mounted high-power discharge socket of claim 1, wherein: The socket is also provided with a circuit control mechanism, the circuit control mechanism includes a high-voltage connector, a low-voltage connector and an MCU, the high-voltage connector is connected with the jack end of the socket body through a current protection circuit, one end of the MCU is connected with the SW interface of the low-voltage connector through an enable driving circuit, the other end of the MCU is connected with the vbat jack pin end of the low-voltage connector through a voltage converter, the GND jack pin end of the low-voltage connector is also connected with a Hall element, the other end of the Hall element is connected with a first resistor and the EN end of the voltage converter respectively, and the low-voltage connector is also connected with a USB charging port.

3. The vehicle-mounted high-power discharge socket of claim 2, wherein: The detection end of the current protection circuit is connected with the MCU, and the current protection circuit includes an alternating voltage detection circuit and a leakage current detection circuit.

4. The vehicle-mounted high-power discharge socket of claim 3, wherein: The dry reed is also connected with a second resistor between the GND jack pin end of the low-voltage connector.

5. A vehicle-mounted high-power discharge socket as claimed in claim 4, characterized in that: The GND USB pin end and the IGN pin end of the low-voltage connector are connected with a PCBA circuit board respectively, and the PCBA circuit board is connected with the USB charging port.

6. A vehicle-mounted high-power discharge socket as claimed in claim 5, characterized in that: The USB charging port includes a USB-A charging port and a USB-C charging port.

7. A vehicle mounted high power discharge socket as claimed in claim 6 wherein: The MCU is also connected with a reset button, a display lamp and a temperature sensor.

8. A vehicle-mounted high-power discharge socket as claimed in claim 7, characterized in that: The high-voltage connector is connected with the jack end through a relay, the other end of the relay is connected with the MCU, and a current sensor connected with the MCU is arranged between the relay and the high-voltage connector.

9. The vehicle-mounted high-power discharge socket of claim 2, wherein: The MCU is connected with a LIN communication mechanism.

10. The vehicle-mounted high-power discharge socket of claim 3, wherein: The alternating voltage detection circuit includes a first integrated circuit element connected with the high-voltage connector, the third pin of the first integrated circuit element is connected with the negative power supply end of the first operational amplifier through a second resistor, the fourth pin is sequentially connected with the positive power supply end of the first operational amplifier through a second capacitor and a fifth resistor, and the output end of the first operational amplifier is connected with the MCU through a third resistor; a first capacitor and a first resistor are also connected in parallel between the output end of the second resistor and the input end of the third resistor; a fourth resistor is connected in parallel between the third pin and the fourth pin of the first integrated circuit element; and the output end of the fifth resistor is connected with a sixth capacitor and a ninth resistor in parallel.

11. The vehicle-mounted high-power discharge socket of claim 3, wherein: The leakage current detection circuit includes a sixth detection resistor connected with a ground fault circuit breaker, the sixth detection resistor is connected with the negative power supply end of the first detection amplifier through a fourth detection capacitor, the first detection amplifier is connected with the positive power supply end of the second detection amplifier through a fifth detection resistor, the second detection amplifier is connected with a first diode, and the first detection diode is connected with the MCU through a seventh detection resistor.

12. The vehicle-mounted high-power discharge socket of claim 10, wherein: The sixth detection resistor is connected with the fourth detection resistor and the eighth detection resistor, the other end of the fourth detection resistor is connected with the first detection resistor, the other end of the eighth detection resistor is connected with the eleventh detection resistor, the output end of the eighth detection resistor is connected with the fourth detection resistor, and the output end of the fourth detection capacitor is connected with the output end of the first detection amplifier; the output end of the first detection amplifier is connected with the negative power input end of the fourth detection amplifier, the positive power input end of the fourth detection amplifier is connected with the output end of the third detection amplifier, the output end of the fourth detection amplifier is connected with the first detection diode, and the tenth detection resistor is connected with the fourth detection amplifier in parallel, and the third detection resistor is connected between the positive power input end and the output end of the second detection amplifier.

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