Charging bin cover control device, charging gun, charging equipment and electric vehicle

Abstract

The utility model relates to the technical field of electric vehicle charging, in particular to a charging bin cover control device, a charging gun, charging equipment and an electric vehicle, and the charging bin cover control device comprises a wireless radio frequency circuit, a magnetic signal detection circuit and a magnet; the magnet is used for being arranged on a charging gun base. The magnetic signal detection circuit comprises a magnetic sensor, and the magnetic sensor is used for being arranged on a charging gun. The magnetic sensor is used for generating a magnetic induction signal for the approaching magnet and sending a state signal to the wireless radio frequency circuit when the magnetic induction signal is changed; the wireless radio frequency circuit is used for sending a cover opening control wireless signal to a target vehicle when receiving the state signal; the cover opening control wireless signal is used for controlling a vehicle charging bin cover to be opened. Therefore, the problems of low working efficiency and low automation degree of the charging gun can be effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle charging, and in particular to a charging compartment cover control device, a charging gun, a charging device and an electric vehicle. Background Art

[0002] The existing vehicle charging gun is equipped with a button to open the car charging compartment cover, which needs to be opened manually. For example, Tesla and other new energy vehicles have the function of wirelessly opening the charging compartment cover through a button, but the service life of the charging gun switch is limited, which in turn affects the working efficiency of the charging gun. Moreover, as the service life of the charging gun switch increases, the waterproof function of the charging gun is also affected. In addition, the button operation has a low degree of automation and poor user experience. Utility Model Content

[0003] In view of this, the embodiments of the present application provide a charging compartment cover control device, a charging gun, a charging device and an electric vehicle, which can effectively solve the problems of low working efficiency and low degree of automation of the charging gun.

[0004] In a first aspect, an embodiment of the present application provides a charging compartment cover control device, comprising: a wireless radio frequency circuit, a magnetic signal detection circuit, and a magnet; the magnet is used to be arranged on the charging gun base;

[0005] The magnetic signal detection circuit includes a magnetic sensor, which is used to be arranged on the charging gun; the magnetic sensor is used to generate a magnetic induction signal for the approaching magnet, and send a status signal to the wireless radio frequency circuit when a change is found in the magnetic induction signal;

[0006] The wireless radio frequency circuit is used to send a cover opening control wireless signal to the target vehicle when receiving the status signal; the cover opening control wireless signal is used to control the opening of the vehicle charging compartment cover.

[0007] In some embodiments, the magnetic signal detection circuit further includes a first current limiting resistor, a first filter capacitor, and a second filter capacitor;

[0008] The magnetic sensor, the first filter capacitor and the second filter capacitor are connected in parallel;

[0009] The first current limiting resistor is arranged at the input end of the magnetic signal detection circuit, and is connected in series with the magnetic sensor, the first filter capacitor and the second filter capacitor.

[0010] In some embodiments, the magnetic signal detection circuit further includes a signal amplification circuit; the magnetic sensor sends the status signal to the wireless radio frequency circuit through the signal amplification circuit.

[0011] In some embodiments, the magnetic sensor is a Hall sensor;

[0012] The magnetic signal detection circuit further includes a third filter capacitor and a second current limiting resistor, one end of the third filter capacitor is connected to the signal output end of the magnetic sensor, and the other end is grounded;

[0013] The signal output end of the magnetic sensor is connected to the wireless radio frequency circuit through the second current limiting resistor; the power input end of the magnetic sensor is connected to the first current limiting resistor, and the ground end of the magnetic sensor is used for grounding.

[0014] In some embodiments, the signal amplification circuit includes a transistor; the input end of the transistor is connected to the power input end of the magnetic sensor, and the control end of the transistor is connected to the signal output end of the magnetic sensor through the second current limiting resistor; the output end of the transistor is used for grounding and for connecting to the wireless radio frequency circuit.

[0015] In some embodiments, the signal amplification circuit also includes a third current limiting resistor and a pull-down resistor; the third current limiting resistor is connected in series to the line between the input end of the transistor and the power input end of the magnetic sensor; the output end of the transistor is grounded through the pull-down resistor.

[0016] In some embodiments, the signal amplifying circuit further includes a bias resistor; one end of the bias resistor is connected to the control end of the transistor, and the other end is grounded.

[0017] In a second aspect, an embodiment of the present application provides a charging gun, comprising: a charging gun body and a charging compartment cover control device provided in the first aspect of the present application.

[0018] In a third aspect, an embodiment of the present application provides a charging device, including: a charging gun base and a charging gun provided in the second aspect of the present application.

[0019] In a fourth aspect, an embodiment of the present application provides a vehicle, comprising: a vehicle body and a wireless radio frequency receiving module; the wireless radio frequency receiving module is used to receive a cover opening control wireless signal sent by a charging compartment cover control device provided in the first aspect of the present application.

[0020] The embodiments of the present application have the following beneficial effects:

[0021] The charging compartment cover control device of the present application includes a wireless radio frequency circuit, a magnetic signal detection circuit and a magnet; the magnetic signal detection circuit includes a magnetic sensor; the magnet is used to be set on the charging gun base, and the magnetic sensor is used to be set in the charging gun; the magnetic sensor is used to receive the magnetic induction signal emitted by the magnet, and send the status signal between the charging gun and the charging gun base to the wireless radio frequency circuit according to the magnetic induction signal; the wireless radio frequency circuit sends a cover opening control wireless signal to the target vehicle according to the status signal; the cover opening control wireless signal is used to control the opening and closing of the vehicle charging compartment cover. The present application can realize the control of the opening of the charging compartment cover without operating buttons, with a high degree of automation, and the charging gun can be used continuously and is not easy to wear. Therefore, the present application can effectively solve the problems of low working efficiency and low degree of automation of the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A structural block diagram of a charging compartment cover control device according to an embodiment of the present application is shown;

[0024] Figure 2 Another structural block diagram of the charging compartment cover control device according to an embodiment of the present application is shown;

[0025] Figure 3 A circuit diagram of a charging compartment cover control device according to an embodiment of the present application is shown;

[0026] Figure 4 Another circuit diagram of the charging compartment cover control device according to an embodiment of the present application is shown;

[0027] Figure 5 A circuit connection diagram of a charging pile system involved in an embodiment of the present application is shown.

[0028] Description of main component symbols:

[0029] 100 - charging gun; 110 - charging compartment cover control device; 111 - wireless radio frequency circuit; 112 - magnetic signal detection circuit; 113 - magnet; 114 - signal amplification circuit; 200 - charging gun base. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0031] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0032] Hereinafter, the terms "including", "having" and their cognates used in various embodiments of the present application are intended only to indicate specific features, numbers, steps, operations, elements, components or a combination of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or a combination of the foregoing items or increasing the possibility of one or more features, numbers, steps, operations, elements, components or a combination of the foregoing items. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0033] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as those generally understood by those skilled in the art to which the various embodiments of the present application belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meanings as the contextual meanings in the relevant technical field and will not be interpreted as having idealized meanings or overly formal meanings unless clearly defined in the various embodiments of the present application.

[0034] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] In order to automatically detect when the user pulls out the charging gun from the charging gun base and automatically open the charging compartment cover, this application adds a magnetic signal detection circuit (Hall detection automatic control circuit) to the wireless radio frequency circuit inside the charging gun to automatically control the wireless radio frequency circuit to output the cover opening control wireless signal. In this way, the problems of low working efficiency of the charging gun, low degree of automation of the charging gun, and affected waterproof function can be effectively solved.

[0036] The charging compartment cover control device 110 is described below in conjunction with some specific embodiments.

[0037] Figure 1A structural block diagram of a charging compartment cover control device according to an embodiment of the present application is shown. Exemplarily, the charging compartment cover control device 110 includes: a wireless radio frequency circuit 111 , a magnetic signal detection circuit 112 and a magnet 113 .

[0038] like Figure 2 As shown, the magnet 113 is arranged on the charging gun base 200; the magnetic signal detection circuit 112 is arranged on the wireless radio frequency circuit 111. The magnetic signal detection circuit 112 includes a magnetic sensor; the magnetic sensor is used to be arranged on the charging gun 100; the magnetic sensor is used to generate a magnetic induction signal for the approaching magnet 113, and when a change is found in the magnetic induction signal, a status signal is sent to the wireless radio frequency circuit 111. Preferably, the magnet 113 is a magnet. Among them, the status signal refers to a signal used to indicate the plug-in and unplug status between the charging gun and the charging gun base. If the charging gun base has its own magnet, the original magnet can be reused in this application without the need to set up a magnet separately. The target vehicle is an electric vehicle.

[0039] The wireless RF circuit 111 is used to send a cover opening control wireless signal to the target vehicle when receiving a status signal; the cover opening control wireless signal is used to control the opening of the vehicle charging compartment cover. For example, when the charging gun 100 is pulled out of the charging gun base 200, the magnetic sensor sends a high level signal or a low level signal to the wireless RF circuit 111. The wireless RF circuit 111 sends a cover opening control wireless signal to the target vehicle according to the high level or low level signal. Among them, the wireless RF circuit 111 includes a RF chip, an antenna and an MCU; after power-on, the MCU sends a cover opening control wireless signal to the electric vehicle through the RF chip and the onboard antenna according to the received status signal.

[0040] In one embodiment, in order to prevent excessive flow and to reduce noise such as ripples and interference in the signal to ensure the stability of the device, as shown in FIG. Figure 3 As shown, the magnetic signal detection circuit 112 further includes a first current limiting resistor R5, a first filter capacitor C1 and a second filter capacitor C2.

[0041] The magnetic sensor D2, the first filter capacitor C1 and the second filter capacitor C2 are connected in parallel;

[0042] The first current limiting resistor R5 is disposed at the input end of the magnetic signal detection circuit 112 and is connected in series with the magnetic sensor D2, the first filter capacitor C1 and the second filter capacitor C2. The input end of the magnetic signal detection circuit 112 is used to connect to the power supply VCC.

[0043] Furthermore, the magnetic sensor D2 may be a Hall sensor (Hall magnet detection chip), which has two output levels, high and low, available.

[0044] The magnetic signal detection circuit 112 further includes a third filter capacitor C3 and a second current limiting resistor R6. One end of the third filter capacitor C3 is connected to the signal output end of the magnetic sensor, and the other end is grounded.

[0045] The signal output terminal of the magnetic sensor is connected to the wireless radio frequency circuit 111 through the second current limiting resistor R6; the power input terminal of the magnetic sensor is connected to the first current limiting resistor R5, and the ground terminal of the magnetic sensor is used for grounding.

[0046] When the charging compartment cover control device 110 of the present application is working specifically: the power supply VCC supplies power to the charging compartment cover control device 110 through the first current limiting resistor R5. When the magnetic sensor D2 on the internal circuit of the charging gun 100 leaves the magnet position of the charging gun base, the third pin (signal output end) of the magnetic sensor D2 will output a high or low electrical signal (status signal) to the subsequent wireless RF circuit 111. For example, a high electrical signal indicates that the charging gun 100 is unplugged. The wireless RF circuit 111 sends a cover opening control wireless signal to the target vehicle to open the charging compartment cover according to the high electrical signal.

[0047] In one embodiment, the receiving pin SW-DET-IN on the subsequent wireless RF circuit 111 controls the internal resistance required for driving current. In order to enhance the load output driving current, the magnetic signal detection circuit 112 also includes a signal amplification circuit 114; the magnetic sensor sends a status signal to the wireless RF circuit 111 through the signal amplification circuit 114.

[0048] Furthermore, the signal amplification circuit 114 includes a transistor Q5, a third current limiting resistor R9 and a pull-down resistor R8; the input end of the transistor Q5 is connected to the power input end of the magnetic sensor, and the control end of the transistor Q5 is connected to the signal output end of the magnetic sensor; the output end of the transistor Q5 is used for grounding and for connecting to the wireless RF circuit 111.

[0049] Furthermore, to prevent the signal amplifying circuit 114 from current overload, the signal amplifying circuit 114 further includes a third current limiting resistor R9 and a pull-down resistor R8. The third current limiting resistor R9 is connected in series to the connection line between the input end of the transistor Q5 and the power input end of the magnetic sensor; the output end of the transistor Q5 is grounded through the pull-down resistor R8.

[0050] The signal amplifying circuit 114 further includes a bias resistor R7 ; one end of the bias resistor R7 is connected to the control end of the transistor Q5 , and the other end is grounded.

[0051] When the charging compartment cover control device 110 of the present application is working, Figure 4 As shown:

[0052] After the power source VCC is normally supplied with power through the first current limiting resistor R5 and the third current limiting resistor R9, the cover opening control wireless signal can be normally detected.

[0053] When the magnetic sensor D2 on the internal circuit of the charging gun leaves the magnet position of the charging gun base, the third pin (signal output end) of the magnetic sensor D2 will output a high or low electrical signal (status signal);

[0054] The high or low level output from the third pin of the magnetic sensor D2 received in the signal amplifying circuit 114 enters the base (control end) of the transistor Q5 through the second current limiting resistor R6. If it is a high electrical signal, the collector of the transistor Q5 will be turned on, and the voltage will flow to the emitter of the transistor Q5 and output a high level to the subsequent wireless RF circuit 111; if it is a low electrical signal (low level), the collector of the transistor Q5 will turn off the voltage, and it will not flow to the emitter of the transistor Q5, and output a low level to the subsequent wireless RF circuit 111.

[0055] like Figure 5 As shown, the present application adds a magnetic signal detection circuit 112 (Hall detection automatic control circuit) to the wireless RF circuit 111 inside the charging gun to replace the same control function of the mechanical button switch on the charging gun 100. Specifically, the magnet is installed on the charging gun base 200, and the Hall sensor is installed in the charging gun and connected to the wireless RF circuit 111. The Hall sensor obtains a magnetic induction signal according to the change in distance from the magnet. The wireless RF circuit 111 receives the magnetic induction signal and sends a switch control signal to the target vehicle. In this way, the wireless RF circuit 111 is automatically controlled to output a cover opening control wireless signal. In this way, the problems of low working efficiency of the charging gun 100, low degree of automation of the charging gun 100, and affected waterproof function can be effectively solved.

[0056] An embodiment of the present application provides a charging gun 100 , which exemplarily includes: a charging gun body and a charging compartment cover control device 110 of an embodiment of the present application.

[0057] It can be understood that the options in the above embodiment are also applicable to this embodiment, so they will not be described again here.

[0058] An embodiment of the present application provides a charging device. Exemplarily, the charging device includes: a charging gun base 200 and a charging gun 100 of an embodiment of the present application.

[0059] It can be understood that the options in the above embodiment are also applicable to this embodiment, so they will not be described again here.

[0060] An embodiment of the present application provides an electric vehicle. Exemplarily, the vehicle includes: a vehicle body and a wireless radio frequency receiving module; the wireless radio frequency receiving module is used to receive a cover opening control wireless signal sent by the charging compartment cover control device 110 of the embodiment of the present application.

[0061] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A charging compartment cover control device, characterized in that: include: A wireless radio frequency circuit, a magnetic signal detection circuit and a magnet; the magnet is used to be arranged on the charging gun base; The magnetic signal detection circuit includes a magnetic sensor, which is used to be arranged on the charging gun; the magnetic sensor is used to generate a magnetic induction signal for the approaching magnet, and send a status signal to the wireless radio frequency circuit when a change is found in the magnetic induction signal; The wireless radio frequency circuit is used to send a cover opening control wireless signal to the target vehicle when receiving the status signal; the cover opening control wireless signal is used to control the opening of the vehicle charging compartment cover.

2. The charging compartment cover control device according to claim 1, characterized in that: The magnetic signal detection circuit also includes a first current limiting resistor, a first filter capacitor and a second filter capacitor; The magnetic sensor, the first filter capacitor and the second filter capacitor are connected in parallel; The first current limiting resistor is arranged at the input end of the magnetic signal detection circuit, and is connected in series with the magnetic sensor, the first filter capacitor and the second filter capacitor.

3. The charging compartment cover control device according to claim 2, characterized in that: The magnetic signal detection circuit also includes a signal amplification circuit; the magnetic sensor sends the status signal to the wireless radio frequency circuit through the signal amplification circuit.

4. The charging compartment cover control device according to claim 3, characterized in that: The magnetic signal detection circuit further includes a third filter capacitor and a second current limiting resistor, one end of the third filter capacitor is connected to the signal output end of the magnetic sensor, and the other end is grounded; The signal output end of the magnetic sensor is connected to the wireless radio frequency circuit through the second current limiting resistor; the power input end of the magnetic sensor is connected to the first current limiting resistor, and the ground end of the magnetic sensor is used for grounding.

5. The charging compartment cover control device according to claim 4, characterized in that: The signal amplification circuit includes a transistor; the input end of the transistor is connected to the power input end of the magnetic sensor, the control end of the transistor is connected to the signal output end of the magnetic sensor through the second current limiting resistor, and the output end of the transistor is used for grounding and for connecting to the wireless radio frequency circuit.

6. The charging compartment cover control device according to claim 5, characterized in that: The signal amplification circuit also includes a third current limiting resistor and a pull-down resistor; the third current limiting resistor is connected in series to the connection line between the input end of the transistor and the power input end of the magnetic sensor; the output end of the transistor is grounded through the pull-down resistor.

7. The charging compartment cover control device according to claim 5, characterized in that: The signal amplifying circuit further comprises a bias resistor; one end of the bias resistor is connected to the control end of the transistor, and the other end is grounded.

8. A charging gun, characterized in that: include: A charging gun body and a charging compartment cover control device as described in any one of claims 1 to 7.

9. A charging device, characterized in that: include: A charging gun base and a charging gun as claimed in claim 8.

10. An electric vehicle, characterized in that: include: Vehicle body and wireless radio frequency receiving module; The wireless radio frequency receiving module is used to receive the cover opening control wireless signal sent by the charging compartment cover control device according to any one of claims 1 to 7.

Images