Wake-up control circuit of electric vehicle power taking device and electric vehicle power taking device

Abstract

The utility model discloses a wake-up control circuit of an electric vehicle power taking device and the electric vehicle power taking device. The wake-up control circuit comprises a charging connection CC1 interface which is respectively connected with a power supply module and a wake-up voltage control device and is set to connect a power taking device to an electric vehicle; the wake-up voltage control device is respectively connected with the power supply module and the controller and is set to be switched on when the power taking device is connected to the electric automobile, and the voltage of the power supply module is output to the controller; the controller is set to control and wake up the power taking device after the power supply module supplies power; the first isolation circuit is respectively connected with the controller and the wake-up voltage control device and is set to lock the conduction state of the wake-up voltage control device after the wake-up voltage control device is conducted; and the second isolation circuit is connected with the controller and the power supply module and is set to provide voltage meeting preset requirements for the electric vehicle after the power taking device is awakened.

Description

Technical Field

[0001] This application relates to the field of circuit design technology, and more specifically, to a wake-up control circuit for an electric vehicle power supply device and the electric vehicle power supply device. Background Technology

[0002] With the increasing popularity of new energy pure electric vehicles, more and more consumers have a need to draw power from electric vehicle fast charging stations. Therefore, devices that draw power from these stations have emerged. During the power-drawing process, a start signal is needed to inform the device that it is connected to the new energy vehicle and ready to operate. Existing technical solutions typically involve designing a switch or button on the power-drawing device, which is then manually triggered to activate the device.

[0003] This method has the potential for accidental triggering, which may cause the power supply device to start accidentally when not in use, consuming the standby power supply of the power supply device and ultimately causing power failure and inability to start; at the same time, buttons or switches have a certain lifespan, and after being pressed or switched on for a long time, they are prone to poor contact, or even failure to start. Utility Model Content

[0004] The main purpose of this application is to provide a wake-up control circuit for an electric vehicle power supply device and an electric vehicle power supply device, so as to solve the problems of existing wake-up control circuits for electric vehicle power supply devices that are based on buttons or switches to notify them to start working, which are prone to accidental triggering and mechanical aging failure during use.

[0005] According to one aspect of this application, a wake-up control circuit for an electric vehicle power-taking device is provided, comprising: a charging connection CC1 interface, a power supply module, a wake-up voltage controller, a first isolation circuit, a second isolation circuit, and a controller. The charging connection CC1 interface is connected to both the power supply module and the wake-up voltage controller, configured to connect the power-taking device to the electric vehicle. The wake-up voltage controller is connected to both the power supply module and the controller, configured to conduct when the power-taking device is connected to the electric vehicle, outputting the voltage from the power supply module to the controller. The controller is configured to control the wake-up of the power-taking device after the power supply module provides power. The first isolation circuit is connected to both the controller and the wake-up voltage controller, configured to lock the conduction state of the wake-up voltage controller after it is turned on. The second isolation circuit is connected to both the controller and the power supply module, configured to provide the electric vehicle with a voltage meeting preset requirements after the power-taking device is woken up.

[0006] Optionally, the wake-up voltage control device includes one of the following: a field-effect transistor, a transistor, and a relay.

[0007] Optionally, the first isolation circuit and the second isolation circuit include one of the following: an opto-isolator, a field-effect transistor, a transistor, and a relay.

[0008] Optionally, the power supply module includes one of the following: a battery and a supercapacitor.

[0009] Optionally, the controller is a microcontroller.

[0010] Optionally, the wake-up control circuit further includes: a first diode and a second diode, wherein the anode of the first diode is connected to the first isolation circuit and the cathode is connected to the cathode of the second diode; the anode of the second diode is connected to the second isolation circuit; the first diode and the second diode are configured to prevent reverse voltage; the first isolation circuit is further configured to pull down the voltage at the anode of the first diode.

[0011] According to another aspect of this application, this application also provides a power supply device for an electric vehicle, including the above-mentioned wake-up control circuit.

[0012] This application provides a wake-up control circuit for an electric vehicle power-gathering device, including: a charging connection CC1 interface, a power supply module, a wake-up voltage controller, a first isolation circuit, a second isolation circuit, and a controller. The charging connection CC1 interface is connected to both the power supply module and the wake-up voltage controller, configured to connect the power-gathering device to the electric vehicle. The wake-up voltage controller is connected to both the power supply module and the controller, configured to conduct when the power-gathering device is connected to the electric vehicle, outputting the voltage from the power supply module to the controller. The controller is configured to control the wake-up of the power-gathering device after the power supply module provides power. The first isolation circuit is connected to both the controller and the wake-up voltage controller, configured to lock the conduction state of the wake-up voltage controller after it is turned on. The second isolation circuit is connected to both the controller and the power supply module, configured to provide the electric vehicle with a voltage meeting preset requirements after the power-gathering device is woken up. This achieves the technical effect of automatically waking up the power-gathering device when it is connected to the electric vehicle's fast charging dock. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 This is a schematic diagram of a wake-up control circuit for an electric vehicle power supply device according to an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of a standard interface for a fast charging dock for electric vehicles. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0018] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0019] To better understand the embodiments of this application, the technical terms involved in the embodiments of this application are explained below:

[0020] A power supply device, also known as a fast-charging interface discharge device, is a device that allows a vehicle battery to discharge. It converts the vehicle's DC fast-charging port into a 220V power source, providing power to high-power appliances such as air conditioners, electric water heaters, and power tools. Using a fast-charging interface discharge device requires sending a discharge request to the vehicle's battery management system via a communication protocol that simulates a fast-charging station. This activates the vehicle's fast-charging relay, enabling the battery to output high-voltage DC power. This high-voltage DC power is then stepped down and rectified into 220V AC power by an external device for use by the device.

[0021] In electric vehicle charging systems, CC1 refers to the Control Pilot 1 line, which is used for charging connection confirmation and control guidance signal transmission.

[0022] CC2, or Control Pilot 2 line, is an additional safety and connection verification mechanism specifically designed for DC fast charging. It works in conjunction with the CC1 line to ensure the safety and reliability of the charging process.

[0023] In related technologies, the wake-up control circuit of the power supply device of an electric vehicle is based on a button or switch to notify it to start working. During use, it is prone to accidental triggering and mechanical aging failure.

[0024] To address this issue, this application provides a related solution. The wake-up control circuit provided in this application includes a power supply module and a switch controller. When the power-taking device is connected to the CC1 interface of the electric vehicle, it automatically outputs a wake-up voltage to the controller. The controller then activates the power-taking device. After activation, the controller locks the supply voltage and provides a suitable CC1 voltage to the electric vehicle through the control circuit and a voltage reverse protection diode. When the power-taking device is connected to the electric vehicle's fast charging dock, this wake-up control circuit can automatically wake it up without human intervention. Furthermore, it prevents accidental triggering when the power-taking device is not in use. The following is a detailed description.

[0025] Figure 1 This is a circuit diagram of a wake-up control circuit for an electric vehicle power supply device according to an embodiment of this application, as shown below. Figure 1 As shown, the wake-up control circuit includes: a charging connection CC1 interface 10, a power supply module 11, a wake-up voltage controller 12, a first isolation circuit 13, a second isolation circuit 14, and a controller 15, wherein,

[0026] The charging connection CC1 interface 11 is connected to the power supply module 11 and the wake-up voltage controller 12 respectively, and is configured to connect the power taking device to the electric vehicle.

[0027] The charging connection CC1 interface 11 is used to connect the power supply device to the CC1 interface on the electric vehicle.

[0028] The wake-up voltage controller 12 is connected to the power supply module 11 and the controller 15 respectively, and is set to be turned on when the power supply device is connected to the electric vehicle, so as to output the voltage of the power supply module 11 to the controller 15.

[0029] In the embodiments of this application, the wake-up voltage control device 12 is a metal-oxide-semiconductor field-effect transistor (MOSFET), or simply a field-effect transistor.

[0030] When the wake-up control circuit is connected to the CC1 interface of the electric vehicle's fast charging dock, due to the pull-down resistor to ground within the CC1 interface ( Figure 1The Rcc resistor (located in the CC1 interface of the electric vehicle's fast charging socket) will change the pin voltage of the MOSFET field-effect transistor, thereby turning on the MOSFET field-effect transistor and outputting the voltage of the power supply module 11 to the controller 15, thus completing the wake-up function of the power supply device.

[0031] As some optional embodiments of this application, the wake-up voltage control device 12 may also be a device with switching function such as a transistor or a relay.

[0032] The controller 15 is configured to control the wake-up of the power-taking device after the power supply module 11 supplies power.

[0033] In the embodiments of this application, the controller 15 is implemented using a microcontroller. It can also be implemented using other types of processors, such as ARM.

[0034] The first isolation circuit 13 is connected to the controller 15 and the wake-up voltage controller 12 respectively, and is configured to lock the on state of the wake-up voltage controller 12 after it is turned on.

[0035] As mentioned above, after the power supply device is connected to the fast charging dock of the electric vehicle, the pull-down resistor in the CC1 interface of the electric vehicle triggers the MOSFET field-effect transistor to conduct, and then supplies power to the controller 15 (microcontroller) and the first isolation circuit 13. After the microcontroller is powered on and woken up, it controls the first isolation circuit 13 to unlock its own power supply to prevent accidental power failure.

[0036] In the embodiments of this application, the first isolation circuit 13 is implemented using an opto-isolator.

[0037] An opto-isolator, also known as an optocoupler or optocoupler, is an electronic component that transmits information between two electrical systems via optical signals while maintaining electrical isolation. This means that current in one system will not flow directly into the other, effectively preventing the effects of electrical noise, voltage spikes, and power supply failures.

[0038] The second isolation circuit 14 is connected to the controller 15 and the power supply module 11 respectively, and is configured to provide the electric vehicle with a voltage that meets the preset requirements after waking up the power supply device.

[0039] The second isolation circuit 14 is used to provide the vehicle with a CC1 voltage that meets national standards after waking up the power supply device, so as to realize power supply interaction. The microcontroller controls the second isolation circuit 14 to open, providing a fixed CC1 voltage to the electric vehicle, allowing the vehicle to confirm that it is connected to the power supply device.

[0040] from Figure 1As can be seen, the second isolation circuit 14 provides the car with a CC1 voltage of 12V that meets the national standard requirements. This 12V voltage is obtained by boosting the voltage provided by the power supply module 11.

[0041] In the embodiments of this application, the second isolation circuit 14 described above is also implemented using an opto-isolator.

[0042] As some optional embodiments of this application, the first isolation circuit 13 and the second isolation circuit 14 may also be implemented using devices with switching control, such as field-effect transistors, transistors, and relays.

[0043] In the embodiments of this application, the power supply module 11 is a battery, but a supercapacitor may also be used.

[0044] Supercapacitors, also known as electric double-layer capacitors or ultra-high-capacity capacitors, are energy storage devices with extremely high capacitance. They combine characteristics of traditional capacitors and batteries, enabling them to store and release large amounts of energy in a short time and possessing a very long charge-discharge cycle life. Compared to ordinary batteries, supercapacitors can charge and discharge at much faster rates, providing instantaneous high-current output, making them ideal for applications requiring rapid response. Supercapacitors can withstand millions of charge-discharge cycles without significant degradation, far exceeding most types of rechargeable batteries. They also operate normally under extreme temperature conditions, exhibiting good performance from low to high temperature environments.

[0045] like Figure 1 As shown, the wake-up control circuit provided in this application further includes: a first diode 16 and a second diode 17, wherein the anode of the first diode 16 is connected to the first isolation circuit 13, and the cathode is connected to the cathode of the second diode 17; the anode of the second diode 17 is connected to the second isolation circuit 14; the first diode 16 and the second diode 17 are configured to prevent reverse voltage; the first isolation circuit 13 is also configured to pull down the voltage at the anode of the first diode 16.

[0046] The circuit includes a first diode 16 and a second diode 17 for voltage reverse protection, ensuring that the CC1 voltage used for vehicle testing meets national standards.

[0047] In addition, the first isolation circuit 13 pulls down the voltage at the anode of the first diode 16 to avoid affecting the voltage of CC1.

[0048] The wake-up control circuit for the electric vehicle power supply device provided in this application can automatically wake up the power supply device after it is connected to the CC1 interface of the electric vehicle, and can ensure that the electric vehicle accurately detects the CC1 voltage. This solves the problem that existing power supply devices that are easily damaged by aging or falsely triggered by pressing a button or switch.

[0049] On the other hand, this application also provides an electric vehicle power-gathering device, which includes the aforementioned wake-up control circuit. Therefore, this electric vehicle power-gathering device includes all the technical effects of the aforementioned wake-up control circuit. Since the technical effects of the wake-up control circuit have already been described in detail above, they will not be repeated here.

[0050] Figure 2 This is a schematic diagram of a standard interface for a fast charging dock for electric vehicles, such as... Figure 2 As shown, the standard interface of the electric vehicle fast charging dock includes a charging connection confirmation CC1 interface, a charging connection confirmation CC2 interface, a charging communication interface, a DC power supply interface, a low-voltage auxiliary power supply interface, and a protective ground.

[0051] Power supply device according to Figure 2 The standard interface shown connects to the electric vehicle. After completing the interaction according to the charging process of the DC fast charging station, the voltage of the electric vehicle's power battery can be output to the power taking device.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0054] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wake-up control circuit for a power-generating device in an electric vehicle, characterized in that, include: The system includes a charging connection CC1 interface, a power supply module, a wake-up voltage controller, a first isolation circuit, a second isolation circuit, and a controller. The charging connection CC1 interface is connected to the power supply module and the wake-up voltage controller respectively, and is configured to connect the power supply device to the electric vehicle. The wake-up voltage controller is connected to the power supply module and the controller respectively, and is configured to turn on when the power supply device is connected to the electric vehicle, and output the voltage of the power supply module to the controller; The controller is configured to wake up the power-taking device after the power supply module supplies power. The first isolation circuit is connected to the controller and the wake-up voltage controller respectively, and is configured to lock the on state of the wake-up voltage controller after the wake-up voltage controller is turned on; The second isolation circuit is connected to the controller and the power supply module respectively, and is configured to provide the electric vehicle with a voltage that meets preset requirements after the power taking device is woken up.

2. The wake-up control circuit for the electric vehicle power-taking device according to claim 1, characterized in that, The wake-up voltage control device includes one of the following: a field-effect transistor, a transistor, and a relay.

3. The wake-up control circuit for the electric vehicle power-taking device according to claim 1, characterized in that, The first isolation circuit and the second isolation circuit include one of the following: an opto-isolator, a field-effect transistor, a transistor, and a relay.

4. The wake-up control circuit for the electric vehicle power-taking device according to claim 1, characterized in that, The power supply module includes one of the following: a battery and a supercapacitor.

5. The wake-up control circuit for the electric vehicle power-taking device according to claim 1, characterized in that, The controller is a microcontroller.

6. The wake-up control circuit for the electric vehicle power-taking device according to any one of claims 1 to 5, characterized in that, The wake-up control circuit further includes: a first diode and a second diode, wherein... The anode of the first diode is connected to the first isolation circuit, and the cathode is connected to the cathode of the second diode; The anode of the second diode is connected to the second isolation circuit; The first diode and the second diode are configured to prevent reverse voltage. The first isolation circuit is also configured to pull down the voltage at the anode of the first diode.

7. A power-generating device for an electric vehicle, characterized in that, Includes the wake-up control circuit as described in any one of claims 1 to 6.

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