Intelligent charging port cover plate control circuit integrated with UWB ultra wide band remote control

Abstract

An intelligent charging port cover plate control circuit integrating UWB ultra wide band remote control is characterized in that a main controller is arranged, and a distance detection end group of the main controller is connected with an antenna through a UWB distance detection circuit; the key detection end of the main controller is connected with an external key switch through a key detection circuit; a charging port cover plate control end of the main controller is connected with a charging port cover plate switch through an LIN bus circuit; the UWB distance detection circuit is provided with a UWB distance detection module, a data receiving end of the UWB distance detection module is connected with a first distance detection end of the main controller after being connected with a resistor R74 in series, and a data transmitting end of the UWB distance detection module is connected with a second distance detection end of the main controller after being connected with a resistor R72 in series; a first signal transmitting and receiving end of the UWB distance detection module is connected with a first antenna interface after being connected with a resistor R114 in series, and a second signal transmitting and receiving end of the UWB distance detection module is connected with a second antenna interface after being connected with a resistor R119 in series. The intelligent charging port cover plate has the advantages that the mistaken touch prevention function of the intelligent charging port cover plate is achieved, and the reliability and the anti-interference capacity of the control circuit are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile technical field especially, and it is a kind of integrated UWB ultra wide band remote control's intelligent charging port cover plate control circuit. BACKGROUND

[0002] Traditional new energy automobile charging port cover plate control mode is mostly used physical button, mechanical key or mobile phone APP remote control, there are following problems:

[0003] (1) pure physical button is vulnerable to false touch (such as car wash, scratch) and causes cover plate to open unexpectedly;

[0004] (2) mobile phone APP relies on network stability, there is delay or signal interference risk. INVENTION CONTENT

[0005] The utility model provides a kind of integrated UWB ultra wide band remote control's intelligent charging port cover plate control circuit, realize the anti-misoperation function of intelligent charging port cover plate, improve the reliability and anti-interference ability of control circuit.

[0006] To achieve the above purpose, the utility model provides a kind of integrated UWB ultra wide band remote control's intelligent charging port cover plate control circuit, its key is: be provided with main controller, the distance detection end group of main controller is connected antenna by UWB distance detection circuit;The key detection end of main controller is connected external key switch by key detection circuit;The charging port cover plate control end of main controller is connected charging port cover plate switch by LIN bus circuit;

[0007] The UWB distance detection circuit is provided with UWB distance detection module, the data receiving end P14 of UWB distance detection module is connected after resistance R74 with the first distance detection end PTC_9 of main controller, and the data sending end P15 of UWB distance detection module is connected after resistance R72 with the second distance detection end PTC_8 of main controller;

[0008] The first signal transceiver end TRX1 of UWB distance detection module is connected after resistance R114 with first antenna interface J1, and the second signal transceiver end TRX2 of UWB distance detection module is connected after resistance R119 with second antenna interface J2.

[0009] The both ends of resistance R114 are connected after resistance C78 and resistance C79 with ground, and the both ends of resistance R119 are connected after resistance C82 and resistance C83 with ground.The resistance C78, resistance C79, resistance C82 and resistance C83 are used for filtering, improve signal quality.

[0010] The main controller is internally provided with real-time clock RTC, for realizing timing, timing function.

[0011] The UWB distance detection module is used to obtain the distance information of the charging gun through an antenna. When the charging gun approaches and the UWB distance detection module detects that the charging gun is within 2 m of the intelligent charging port cover plate, the main controller controls the charging port cover plate to automatically open the door after a delay of 3 seconds. When the charging gun is pulled out, the main controller controls the charging port cover plate to automatically close the door after a delay of 15 seconds, thereby avoiding misoperation.

[0012] The UWB distance detection module is also arranged in the charging gun. The two UWB distance detection modules are matched with each other and detect the distance between the charging gun and the charging port cover plate through an antenna, thereby realizing the intelligent opening and closing of the charging port cover plate.

[0013] Through the above design, the UWB distance detection circuit is used for accurate distance measurement to prevent misoperation. The UWB near-field sensing is combined with the physical button detection circuit to effectively improve the reliability and anti-interference ability of the control circuit.

[0014] As a preferred embodiment, the button detection circuit is provided with a stabilizing diode D12. The cathode of the stabilizing diode D12 is connected to the ground after an external button switch, the anode of the stabilizing diode D12 is connected to the gate of a MOS tube Q2, the source of the MOS tube Q2 is connected to a 3.3 V power supply, the source of the MOS tube Q2 is also connected to the gate of the MOS tube Q2 through a resistor R161, the drain of the MOS tube Q2 is connected to the ground through a resistor R160 and a resistor R163 in sequence, the common end of the resistor R160 and the resistor R163 is connected to the button detection end PTC_5 of the main controller through a resistor R33, and the common end is also connected to the ground through a capacitor C103.

[0015] The button detection circuit is used to detect the information of the external button switch. When the cathode of the stabilizing diode D12 is connected to the ground, that is, when the external button is triggered, the common end of the resistor R160 and the resistor R163 outputs a high level to the main controller for detection. The main controller controls the charging port cover plate to open according to the high level information.

[0016] As a preferred embodiment, the LIN bus circuit is provided with a LIN bus transceiver. The signal transceiving end group of the LIN bus transceiver is connected to the LIN transceiving end group of the main controller in correspondence. The signal output end LBUS of the LIN bus transceiver is connected to the charging port cover switch through a magnetic bead FB21, the signal output end LBUS of the LIN bus transceiver is also connected to the ground through a capacitor C100, the signal output end LBUS of the LIN bus transceiver is also connected to the ground through a bidirectional stabilizing diode TVS2, and the signal output end LBUS of the LIN bus transceiver is also connected to the power supply through a resistor R157.

[0017] The main controller sends a control instruction to the charging port cover switch through the LIN bus circuit.

[0018] As preferred: the LED driving end group of the main controller is connected with the charging indicator lamp through an LED driving circuit, the LED driving circuit is provided with an LED driver, a first signal transceiver end SDA of the LED driver is connected with a first LED driving end PTA_6 of the main controller in series with a resistor R66, a second signal transceiver end SCL of the LED driver is connected with a second LED driving end PTA_7 of the main controller in series with a resistor R70, a third signal transceiver end SDB of the LED driver is connected with a third LED driving end PTE_7 of the main controller in series with a resistor R64, the third signal transceiver end SDB of the LED driver is further connected with the ground in series with a resistor R104, and the third signal transceiver end SDB of the LED driver is further connected with the ground in series with a capacitor C69.

[0019] The LED driver is provided with m PWM driving ends, m≥3, each PWM driving end is connected with the cathode of one charging indicator lamp bead, and all the charging indicator lamp beads share an anode.

[0020] The LED driving circuit is used for driving the charging indicator lamp to display corresponding information according to the charging state information provided by the main controller, so that the charging state of the vehicle can be intuitively understood. When the charging capacity is less than 25%, the charging indicator lamp is red and constantly displays; when the charging capacity is 25%-75%, the charging indicator lamp is yellow and displays in a breathing mode; when the charging capacity is 75%-100%, the charging indicator lamp is green and constantly displays; and when the charging state fails, the charging indicator lamp is blue and displays in a breathing mode.

[0021] Through multi-color partition lighting, the user can intuitively obtain the power and fault information, and reduce the misoperation.

[0022] As preferred: the lighting control end of the main controller is connected with the lighting lamp through a lighting lamp power supply control circuit, the lighting lamp power supply control circuit is provided with a stabilizing diode D13, the anode of the stabilizing diode D13 is connected with the lighting control end PTD_5 of the main controller in series with a resistor R88, the cathode of the stabilizing diode D13 is connected with the gate of a MOS tube Q3 in series with a resistor R162, the source of the MOS tube Q3 is connected with a power supply, the drain of the MOS tube Q3 is connected with the front end of a resistor R159, the rear end of the resistor R159 is connected with the power supply end of the lighting lamp, the rear end of the resistor R159 is further connected with the ground in series with a capacitor C101, and the rear end of the resistor R159 is further connected with the ground in series with a capacitor C102.

[0023] The lighting lamp is arranged inside the charging panel cover plate, a plurality of white light lighting lamps are constantly lighted when the charging panel cover plate is opened, and the night plug-in operation is supported.

[0024] As preferred: the voice signal receiving end group of the main controller is connected with the voice module through a level conversion circuit.

[0025] The level conversion circuit is provided with a level converter, speech signal input ends of the level converter are connected with a speech module, a first speech signal input end A3 of the level converter is connected with a ground through a bidirectional stabilizing diode D8 in series, and the first speech signal input end A3 is also connected with a 5V power supply through a resistor R146 in series; a second speech signal input end A4 of the level converter is connected with a ground through a bidirectional stabilizing diode D9 in series, and the first speech signal input end A3 is also connected with a 5V power supply through a resistor R148 in series;

[0026] A first speech signal output end B3 of the level converter is connected with a first speech signal receiving end PTA_3 of a main controller through a resistor R144 and a resistor R50 in series in turn, and a second speech signal output end B4 of the level converter is connected with a second speech signal receiving end PTA_2 of the main controller through a resistor R145 and a resistor R48 in series in turn.

[0027] By integrating the ASRPRO speech module, voice instructions (such as "open door" and "close door") within 2m are supported, and the response time is less than or equal to 0.5 seconds.

[0028] The level converter is used for matching an input voltage with a voltage range value allowed by the main controller.

[0029] As a preferred, the main controller is also connected with a whole vehicle communication module through a CAN bus circuit.

[0030] The CAN bus circuit is provided with a CAN bus transceiver, a signal sending end TxD of the CAN bus transceiver is connected with a CAN signal receiving end PTE_5 of the main controller through a resistor R55 in series, a signal receiving end RxD of the CAN bus transceiver is connected with a CAN signal sending end PTE_4 of the main controller through a resistor R57 in series, a data sending and receiving end group of the CAN bus transceiver is connected with a wire inlet end group of an electromagnetic coupler L1, a wire outlet end group of the electromagnetic coupler L1 is connected with a CAN signal sending and receiving end group of the whole vehicle communication module, and a transient voltage suppressor D10 is further connected between the wire outlet end groups of the electromagnetic coupler L1 in series.

[0031] The main controller communicates with the whole vehicle communication module through the CAN bus circuit.

[0032] The UWB distance detection circuit can accurately measure the distance and prevent false touch, the UWB near field sensing is combined with the physical button detection circuit, and the reliability and anti-interference ability of the control circuit are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1The circuit structure block diagram of the utility model;

[0034] Figure 2 The main controller circuit diagram in the embodiment;

[0035] Figure 3 The UWB distance detection module circuit diagram in the embodiment;

[0036] Figure 4 The key detection circuit diagram in the embodiment;

[0037] Figure 5 The LED driver circuit diagram in the embodiment;

[0038] Figure 6 The charging indicator lamp circuit diagram in the embodiment;

[0039] Figure 7 The lighting lamp power supply control circuit diagram in the embodiment;

[0040] Figure 8 The level conversion circuit diagram in the embodiment;

[0041] Figure 9 The CAN bus circuit diagram in the embodiment;

[0042] Figure 10 The LIN bus circuit diagram in the embodiment;

[0043] Figure 11 The power supply circuit diagram in the embodiment. DETAILED DESCRIPTION

[0044] The utility model will be further explained in detail in combination with the drawings and specific examples. The following embodiments or drawings are used to explain the utility model, but not to limit the scope of the utility model.

[0045] As Figure 1 shown, an integrated UWB ultra-wideband remote control intelligent charging port cover plate control circuit is provided with a main controller U5, the distance detection end group of the main controller U5 is connected with an antenna through a UWB distance detection circuit; the key detection end of the main controller U5 is connected with an external key switch through a key detection circuit; the charging port cover plate control end of the main controller U5 is connected with a charging port cover plate switch through a LIN bus circuit.

[0046] As Figure 2 , Figure 3As shown, the UWB distance detection circuit is provided with a UWB distance detection module U6, a data receiving end P14 of the UWB distance detection module U6 is connected to the first distance detection end PTC_9 of the main controller U5 through a resistor R74, and a data sending end P15 of the UWB distance detection module U6 is connected to the second distance detection end PTC_8 of the main controller U5 through a resistor R72.

[0047] A first signal transceiver end TRX1 of the UWB distance detection module U6 is connected to the first antenna interface J1 through a resistor R114, and both ends of the resistor R114 are connected to the ground through a capacitor C78 and a capacitor C79 respectively.

[0048] A second signal transceiver end TRX2 of the UWB distance detection module U6 is connected to the second antenna interface J2 through a resistor R119, and both ends of the resistor R119 are connected to the ground through a capacitor C82 and a capacitor C83 respectively.

[0049] The UWB distance detection circuit is configured with an independent power supply P1, and meets the low-power consumption requirement. The standby power consumption of the UWB module is less than 1mW.

[0050] As shown in Figure 2 , Figure 4 , the key detection circuit is provided with a stabilizing diode D12, a cathode of the stabilizing diode D12 is connected to the ground through an external key switch, an anode of the stabilizing diode D12 is connected to a gate of a MOS tube Q2, a source of the MOS tube Q2 is connected to a 3.3V power supply, the source of the MOS tube Q2 is also connected to the gate of the MOS tube Q2 through a resistor R161, a drain of the MOS tube Q2 is connected to the ground through a resistor R160 and a resistor R163 in sequence, a common end of the resistor R160 and the resistor R163 is connected to a key detection end PTC_5 of the main controller U5 through a resistor R33, and the common end is also connected to the ground through a capacitor C103.

[0051] As shown in Figure 2 , Figures 5-7 , a LED driving end group of the main controller U5 is connected to a charging indicator lamp through a LED driving circuit, the LED driving circuit is provided with a LED driver IC1, a first signal transceiver end SDA of the LED driver IC1 is connected to a first LED driving end PTA_6 of the main controller U5 through a resistor R66, a second signal transceiver end SCL of the LED driver IC1 is connected to a second LED driving end PTA_7 of the main controller U5 through a resistor R70, a third signal transceiver end SDB of the LED driver IC1 is connected to a third LED driving end PTE_7 of the main controller U5 through a resistor R64, the third signal transceiver end SDB of the LED driver IC1 is also connected to the ground through a resistor R104, and the third signal transceiver end SDB of the LED driver IC1 is also connected to the ground through a capacitor C69.

[0052] The LED driver IC1 is provided with m PWM drive terminals, each of which is connected to the cathode of a charging indicator light bead, and all charging indicator lights bead share a common anode.

[0053] LED system power <2W, suitable for vehicle power supply requirements.

[0054] like Figure 2 , Figure 7 As shown, the lighting control terminal of the main controller U5 is connected to the lighting lamp via a lighting power supply control circuit. The lighting power supply control circuit is equipped with a Zener diode D13. The anode of the Zener diode D13 is connected to the lighting control terminal PTD_5 of the main controller U5 via a series resistor R88. The cathode of the Zener diode D13 is connected to the gate of the MOSFET Q3 via a series resistor R162. The source of the MOSFET Q3 is connected to the power supply. The drain of the MOSFET Q3 is connected to the front end of a resistor R159. The rear end of the resistor R159 is connected to the power supply terminal of the lighting lamp. A capacitor C101 is connected in series with the rear end of the resistor R159 and then grounded. A capacitor C102 is also connected in series with the rear end of the resistor R159 and then grounded.

[0055] like Figure 2 , Figure 8 As shown, the voice signal receiving end group of the main controller U5 is connected to the voice module via a level conversion circuit;

[0056] The level conversion circuit includes a level converter U10. The voice signal input terminal of the level converter U10 is connected to the voice module. The first voice signal input terminal A3 of the level converter U10 is connected to ground after being connected in series with a bidirectional Zener diode D8. The first voice signal input terminal A3 is also connected in series with a resistor R146 and then connected to a 5V power supply. The second voice signal input terminal A4 of the level converter U10 is connected to ground after being connected in series with a bidirectional Zener diode D9. The first voice signal input terminal A3 is also connected in series with a resistor R148 and then connected to a 5V power supply.

[0057] The first voice signal output terminal B3 of the level converter U10 is connected to the first voice signal receiving terminal PTA_3 of the main controller U5 after being connected in series with resistors R144 and R50. The second voice signal output terminal B4 of the level converter U10 is connected to the second voice signal receiving terminal PTA_2 of the main controller U5 after being connected in series with resistors R145 and R48.

[0058] like Figure 2 , Figure 9 As shown, the main controller U5 is also connected to the vehicle communication module via a CAN bus circuit;

[0059] The CAN bus circuit is provided with a CAN bus transceiver IC2, a signal transmitting end TxD of the CAN bus transceiver IC2 is connected with a CAN signal receiving end PTE_5 of the main controller U5 through a resistor R55 in series, a signal receiving end RxD of the CAN bus transceiver IC2 is connected with a CAN signal transmitting end PTE_4 of the main controller U5 through a resistor R57 in series; a data receiving and transmitting end group of the CAN bus transceiver IC2 is connected with an incoming line end group of an electromagnetic coupler L1, an outgoing line end group of the electromagnetic coupler L1 is connected with a CAN signal receiving and transmitting end group of the whole vehicle communication module; a transient voltage suppressor D10 in series is further arranged between the outgoing line end groups of the electromagnetic coupler L1 and connected with the ground.

[0060] As shown in Figure 10 The LIN bus circuit is provided with a LIN bus transceiver U11, a signal receiving and transmitting end group of the LIN bus transceiver U11 is connected with a LIN receiving and transmitting end group of the main controller U5, a signal output end LBUS of the LIN bus transceiver U11 is connected with a charging port cover switch through a magnetic bead FB21 in series, the signal output end LBUS of the LIN bus transceiver U11 is further connected with the ground through a capacitor C100 in series, the signal output end LBUS of the LIN bus transceiver U11 is further connected with the ground through a bidirectional voltage stabilizing diode TVS2 in series, and the signal output end LBUS of the LIN bus transceiver U11 is further connected with a power supply through a resistor R157 in series.

[0061] A power supply circuit is further arranged, as shown in Figure 11

[0062] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.​

Claims

1. A smart charging port cover control circuit integrating UWB ultra-wideband remote control, characterized in that: The system is equipped with a main controller (U5), whose distance detection terminal group is connected to an antenna via a UWB distance detection circuit; whose button detection terminal is connected to an external button switch via a button detection circuit; and whose charging port cover control terminal is connected to a charging port cover switch via a LIN bus circuit. The UWB distance detection circuit is equipped with a UWB distance detection module (U6). The data receiving terminal P14 of the UWB distance detection module (U6) is connected to the first distance detection terminal PTC_9 of the main controller (U5) after a series resistor R74. The data transmitting terminal P15 of the UWB distance detection module (U6) is connected to the second distance detection terminal PTC_8 of the main controller (U5) after a series resistor R72. The first signal transceiver terminal TRX1 of the UWB distance detection module (U6) is connected to the first antenna interface J1 after a series resistor R114, and the second signal transceiver terminal TRX2 of the UWB distance detection module (U6) is connected to the second antenna interface J2 after a series resistor R119.

2. The intelligent charging port cover control circuit integrating UWB ultra-wideband remote control according to claim 1, characterized in that: The button detection circuit includes a Zener diode D12. The cathode of the Zener diode D12 is connected in series with an external button switch and then grounded. The anode of the Zener diode D12 is connected to the gate of a MOSFET Q2. The source of the MOSFET Q2 is connected to a 3.3V power supply. A resistor R161 is connected in series with the source of the MOSFET Q2 and then to its gate. A resistor R160 and a resistor R163 are connected in series with the drain of the MOSFET Q2 and then grounded. The common terminal of the resistors R160 and R163 is connected in series with a resistor R33 and then to the button detection terminal PTC_5 of the main controller (U5). A capacitor C103 is also connected in series with this common terminal and then grounded.

3. The intelligent charging port cover control circuit integrating UWB ultra-wideband remote control according to claim 1, characterized in that: The LIN bus circuit is equipped with a LIN bus transceiver (U11). The signal transceiver group of the LIN bus transceiver (U11) is connected to the corresponding LIN transceiver group of the main controller (U5). The signal output terminal LBUS of the LIN bus transceiver (U11) is connected to the charging port cover switch after being connected in series with the ferrite bead FB21. The signal output terminal LBUS of the LIN bus transceiver (U11) is also connected to the ground after being connected in series with the capacitor C100. The signal output terminal LBUS is also connected to the ground after being connected in series with the bidirectional Zener diode TVS2. The signal output terminal LBUS is also connected to the power supply after being connected in series with the resistor R157.

4. The intelligent charging port cover control circuit integrating UWB ultra-wideband remote control according to claim 1, characterized in that: The LED driver terminal group of the main controller (U5) is connected to the charging indicator light via an LED driver circuit. The LED driver circuit is equipped with an LED driver (IC1). The first signal transceiver terminal SDA of the LED driver (IC1) is connected to the first LED driver terminal PTA_6 of the main controller (U5) after a series resistor R66. The second signal transceiver terminal SCL of the LED driver (IC1) is connected to the second LED driver terminal PTA_7 of the main controller (U5) after a series resistor R70. The third signal transceiver terminal SDB of the LED driver (IC1) is connected to the third LED driver terminal PTE_7 of the main controller (U5) after a series resistor R64. The third signal transceiver terminal SDB of the LED driver (IC1) is also connected to ground after a series resistor R104. The third signal transceiver terminal SDB of the LED driver (IC1) is also connected to ground after a series capacitor C69. The LED driver (IC1) is provided with m PWM driving terminals, each of which is connected to the cathode of a charging indicator light bead, and all charging indicator lights bead share a common anode.

5. The intelligent charging port cover control circuit integrating UWB ultra-wideband remote control according to claim 1, characterized in that: The lighting control terminal of the main controller (U5) is connected to the lighting lamp via a lighting power supply control circuit. The lighting power supply control circuit is equipped with a Zener diode D13. The anode of the Zener diode D13 is connected to the lighting control terminal PTD_5 of the main controller (U5) after a series resistor R88. The cathode of the Zener diode D13 is connected to the gate of the MOSFET Q3 after a series resistor R162. The source of the MOSFET Q3 is connected to the power supply. The drain of the MOSFET Q3 is connected to the front end of the resistor R159. The rear end of the resistor R159 is connected to the power supply terminal of the lighting lamp. The rear end of the resistor R159 is also connected to the ground after a series capacitor C101 and a series capacitor C102.

6. The intelligent charging port cover control circuit integrating UWB ultra-wideband remote control according to claim 1, characterized in that: The voice signal receiving terminal group of the main controller (U5) is connected to the voice module via a level conversion circuit; The level conversion circuit includes a level converter (U10). The voice signal input terminal of the level converter (U10) is connected to the voice module. The first voice signal input terminal A3 of the level converter (U10) is connected to ground after being connected in series with a bidirectional Zener diode D8. The first voice signal input terminal A3 is also connected in series with a resistor R146 and then connected to a 5V power supply. The second voice signal input terminal A4 of the level converter (U10) is connected to ground after being connected in series with a bidirectional Zener diode D9. The first voice signal input terminal A3 is also connected in series with a resistor R148 and then connected to a 5V power supply. The first voice signal output terminal B3 of the level converter (U10) is connected in series with resistors R144 and R50 and then connected to the first voice signal receiving terminal PTA_3 of the main controller (U5). The second voice signal output terminal B4 of the level converter (U10) is connected in series with resistors R145 and R48 and then connected to the second voice signal receiving terminal PTA_2 of the main controller (U5).

7. The intelligent charging port cover control circuit integrating UWB ultra-wideband remote control according to claim 1, characterized in that: The main controller (U5) is also connected to the vehicle communication module via a CAN bus circuit; The CAN bus circuit is equipped with a CAN bus transceiver (IC2). The signal transmitting terminal TxD of the CAN bus transceiver (IC2) is connected to the CAN signal receiving terminal PTE_5 of the main controller (U5) after a series resistor R55. The signal receiving terminal RxD of the CAN bus transceiver (IC2) is connected to the CAN signal transmitting terminal PTE_4 of the main controller (U5) after a series resistor R57. The data transceiver terminals of the CAN bus transceiver (IC2) are connected to the input terminal group of the electromagnetic coupler L1, and the output terminal group of the electromagnetic coupler L1 is connected to the CAN signal transceiver terminal group of the vehicle communication module. A transient voltage suppressor D10 is connected in series between the output terminals of the electromagnetic coupler L1 and then grounded.

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