Vehicle body controller awakening device and electric vehicle

Abstract

The utility model discloses an automobile body controller awakening device and an electric automobile, and belongs to the field of electric automobiles. The vehicle body controller awakening device comprises a charging guiding module, a first awakening module and a second awakening module, the charging guiding module comprises a first port, and the input end of the first awakening module and the input end of the second awakening module are respectively connected with the first port. The output end of the first awakening module and the output end of the second awakening module are connected with a vehicle body controller of the electric vehicle, the first awakening module is used for generating a first awakening signal and awakening the vehicle body controller when the charging gun is inserted into the vehicle charging interface, and the second awakening module is used for generating a second awakening signal and awakening the vehicle body controller when the charging gun is pulled out of the vehicle charging interface. And a second wake-up signal is generated to wake up the vehicle body controller, so that BMS wake-up of CC2 charging in a gun insertion state and a gun pulling state can be realized on the premise of not depending on an A + auxiliary power supply.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicles, in particular to a vehicle body controller awakening device and an electric vehicle. Background Art

[0002] In the field of electric vehicle charging, the traditional CC2 charging wake-up is usually based on A+ auxiliary charging wake-up. In this solution, CC2 only detects signals and does not need CC2 to wake up the BMS. However, some car manufacturers now design BMS charging wake-up without A+ auxiliary wake-up, so a wake-up circuit needs to be designed for CC2.

[0003] In addition, traditional designs often use a single wake-up circuit solution. This design only triggers the edge wake-up signal when the charging gun is in the plug-in action. The BMS returns to the sleep state during the charging process. During use, it is impossible to detect whether the charging gun is disconnected. It is easy for the operator to start the vehicle because he forgets to unplug the gun, causing damage to the charging gun. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vehicle body controller wake-up device, which is designed to wake up the BMS when the CC2 charger is plugged in or out of the charging station without relying on the A+ auxiliary power supply.

[0005] The utility model also provides an electric vehicle with the vehicle body controller awakening device.

[0006] According to the first embodiment of the utility model, the vehicle body controller awakening device is applied to an electric vehicle, wherein the electric vehicle is provided with a low-voltage power supply, and includes:

[0007] A charging guidance module, the charging guidance module comprising a first charging guidance module and a second charging guidance module, the first charging guidance module being configured to be connected to the low-voltage power supply, and the second charging guidance module being configured to be connected to a body ground of the electric vehicle; the charging guidance module comprising a first port being configured to be connected to a vehicle charging interface of the electric vehicle, the charging guidance module being configured to process a charging connection confirmation signal received by the vehicle charging interface;

[0008] a first wake-up module, wherein an input end of the first wake-up module is connected to the first port, an output end of the first wake-up module is used to connect to a body controller of the electric vehicle, and the first wake-up module is used to generate a first wake-up signal to wake up the body controller when a charging gun is inserted into the vehicle charging port;

[0009] A second wake-up module, wherein the input end of the second wake-up module is connected to the first port, the output end of the second wake-up module is used to connect to the body controller, and the second wake-up module is used to generate a second wake-up signal to wake up the body controller when the charging gun is unplugged from the vehicle charging interface.

[0010] The vehicle body controller wake-up device according to an embodiment of the present invention has at least the following beneficial effects: When the charging gun is inserted into the vehicle charging port (i.e., in the plug-in state), the first wake-up module outputs a first wake-up signal to wake up the vehicle body controller. When the charging gun is unplugged from the vehicle charging port (i.e., in the unplugged state), the second wake-up module outputs a second wake-up signal to wake up the vehicle body controller. This allows the vehicle body controller to be woken for CC2 charging without relying on the A+ auxiliary power supply, allowing the electric vehicle to detect the charging gun status in different charging states, thus preventing damage to the charging pile caused by improper operation of starting the electric vehicle while the gun is plugged in.

[0011] According to some embodiments of the present invention, the first charging guidance module includes a first switch submodule and a second switch submodule, the first switch submodule and the second switch submodule are connected, the second switch submodule is connected to the low-voltage power supply, and the first port is set on the second switch submodule, and the first port is respectively connected to the first wake-up module and the second wake-up module.

[0012] According to some embodiments of the present invention, the charging guidance module also includes a second port, the second charging guidance module includes a third switch submodule and a resistor-capacitor filter submodule, the third switch submodule is connected to the resistor-capacitor filter submodule, the second port is set in the resistor-capacitor filter submodule, and the second port is used to connect to the body controller.

[0013] According to some embodiments of the present invention, the awakening device further includes:

[0014] a first filtering module, wherein an input end of the first filtering module is connected to an output end of the first wake-up module, an output end of the first filtering module is used to be connected to the vehicle body controller, and the first filtering module is used to filter the first wake-up signal;

[0015] The second filtering module has an input end connected to the second wake-up module, an output end of the second filtering module is used to connect to the vehicle body controller, and the second filtering module is used to filter the second wake-up signal.

[0016] According to some embodiments of the present invention, the awakening device further includes a port protection module, the input end of the port protection module is used to be connected to the vehicle charging interface, and the output end of the port protection module is connected to the first port.

[0017] According to some embodiments of the present invention, the first wake-up module includes a first capacitor, a first resistor, a second resistor, a first diode and a transistor, the first capacitor is connected to the first resistor, the first resistor is respectively connected to the second resistor, the first diode and the transistor; the collector of the transistor is used to output the first wake-up signal.

[0018] According to some embodiments of the present invention, the second wake-up module includes a second capacitor, a third resistor, a fourth resistor and a second diode, the second capacitor is connected to the third resistor, and the third resistor is respectively connected to the fourth resistor and the second diode; the positive electrode of the second diode is grounded, and the negative electrode of the second diode is used to output the second wake-up signal.

[0019] According to some embodiments of the present invention, the first filtering module includes a fifth resistor, a third capacitor and a sixth resistor, one end of the fifth resistor is connected to the first wake-up module, and the other end of the fifth resistor is connected to the third capacitor and the sixth resistor respectively.

[0020] According to some embodiments of the present invention, the second filtering module includes a seventh resistor and a fourth capacitor, one end of the seventh resistor is connected to the second wake-up module, and the other end of the seventh resistor is connected to the fourth capacitor.

[0021] An electric vehicle according to an embodiment of the second aspect of the present utility model includes the vehicle body controller wake-up device according to the embodiment of the first aspect.

[0022] The electric vehicle according to the embodiment of the present invention has at least the following beneficial effects: the electric vehicle adopts the above-mentioned body controller wake-up device, which can realize the plug-in and pull-out wake-up of the body controller for CC2 charging without relying on the A+ auxiliary power supply, thereby avoiding damage to the charging pile due to misoperation when starting the electric vehicle in the plugged-in state.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1This is a schematic structural diagram of a vehicle body controller wake-up device according to an embodiment of the present utility model;

[0026] Figure 2 This is another structural diagram of the vehicle body controller wake-up device according to an embodiment of the present utility model;

[0027] Figure 3 This is another schematic diagram of the vehicle body controller wake-up device according to an embodiment of the present invention;

[0028] Reference numerals: 100 charging guide module; 110 first charging guide module; 120 second charging guide module; 200 first wake-up module; 300 second wake-up module; 400 vehicle body controller; 500 first filtering module; 600 second filtering module. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0034] In the field of electric vehicle charging, the traditional CC2 charging wake-up is usually based on A+ auxiliary charging wake-up. In this solution, CC2 only detects signals and does not need CC2 to wake up the BMS. However, some car manufacturers now design BMS charging wake-up without A+ auxiliary wake-up, so a wake-up circuit needs to be designed for CC2.

[0035] In addition, traditional designs often use a single wake-up circuit solution. This design only triggers the edge wake-up signal when the charging gun is in the plug-in action. The BMS returns to the sleep state during the charging process. During use, it is impossible to detect whether the charging gun is disconnected. It is easy for the operator to start the vehicle because he forgets to unplug the gun, causing damage to the charging gun.

[0036] Based on this, the utility model proposes a body controller wake-up device and an electric vehicle, which can realize BMS wake-up when CC2 charging is in the plugged-in state and the unplugged state without relying on the A+ auxiliary power supply, thereby avoiding damage to the charging gun or charging pile.

[0037] First, refer to Figure 1The body controller wake-up device of the embodiment of the utility model is applied to electric vehicles. The electric vehicles have a vehicle charging interface, a body controller and a low-voltage power supply. The low-voltage power supply includes a 12V regulated power supply, and the vehicle charging interface includes a CC1 pin and a CC2 pin. The CC1 pin and the CC2 pin are used to confirm whether the charging gun and the vehicle charging interface are connected in place. The CC1 pin is the connection confirmation line of the charging pile, and the CC2 pin is the connection confirmation line of the vehicle. The CC1 pin is used to generate a CC1 signal, and the CC1 signal is detected by the charging pile. The detection of the CC1 signal helps the charging pile to determine whether the vehicle is successfully connected. The CC2 pin is used to generate a CC2 signal, and the CC2 signal is detected by the vehicle. The detection of the CC2 signal ensures that the vehicle can identify the connection of the charging device. The charging pile is used to charge electric vehicles and can provide a 12V power supply. The charging pile is provided with a charging gun, and the charging gun is inserted into the vehicle charging interface to perform DC fast charging on the electric vehicle. To address the issues of an electric vehicle being unable to determine whether the body controller needs to be awakened during charging, or the body controller remaining inactive after being awakened by plugging in a charging gun, the wake-up device of the present invention comprises a charging guidance module 100, a first wake-up module 200, and a second wake-up module 300. The charging guidance module 100 includes a first port, which is connected to the vehicle charging port of the electric vehicle. The charging guidance module 100 processes a charging connection confirmation signal received by the vehicle charging port, which is a CC2 signal. Based on the processing result of the CC2 signal, the connection between the charging gun and the vehicle charging port is determined. The connection relationship reflects the status of the charging gun. If the connection relationship indicates that the charging gun is connected to the vehicle charging port, the charging gun is in the plugged-in state. If the connection relationship indicates that the charging gun is disconnected from the vehicle charging port, the charging gun is in the unplugged state. The charging guidance module 100 comprises a first charging guidance module 110 and a second charging guidance module 120. The first charging guidance module 110 is connected to the low-voltage power supply of the electric vehicle, and the second charging guidance module 120 is connected to the vehicle body ground. The first wake-up module 200 is a plug-in wake-up module. Its input is connected to the first port of the charging guidance module 100, and its output is connected to the vehicle body controller 400. When the charging gun is plugged into the vehicle's charging port, the wake-up device generates a first wake-up signal based on the signal output by the charging guidance module 200 to wake up the vehicle body controller 400. The first wake-up signal is a plug-in wake-up signal. The second wake-up module 300 is a pull-out wake-up module. Its input is connected to the first port of the charging guidance module 100, and its output is connected to the vehicle body controller 400. When the charging gun is unplugged from the vehicle's charging port, the second wake-up module 300 generates a second wake-up signal based on the signal output by the charging guidance module 100 to wake up the vehicle body controller 400.

[0038] Both the first and second wake-up signals are high-level signals. When the charging gun is not connected to the vehicle's charging port, the first and second wake-up modules both output low-level signals. When the charging gun is plugged in, a high-level plug-in wake-up signal, the first wake-up signal, is generated. When the charging gun is unplugged, a high-level unplug-out wake-up signal, the second wake-up signal, is generated. After the plug-in and unplug actions are complete, both signals return to a low level, resolving the issue of the vehicle controller being unable to sleep after being plugged in or unplugged.

[0039] The embodiment of the present invention includes both a plug-in wake-up module and a pull-out wake-up module, which can effectively detect different states during the electric vehicle charging process, preventing the vehicle from being started without knowing whether the gun is pulled out, thereby damaging the charging pile. The different states of the charging process include: before the gun is plugged in, no charging; when the gun is plugged in, a wake-up signal is generated and the body controller wakes up; after the gun is plugged in, the body controller enters a dormant state after waking up for a period of time; before the gun is pulled out, the body controller is in a dormant state; when the gun is pulled out, a wake-up signal is generated and the body controller wakes up; after the gun is pulled out, the body controller enters a dormant state after a period of time.

[0040] Reference Figure 2 In some embodiments, the wake-up device further includes a first filtering module 500 and a second filtering module 600. The first filtering module 500 is a gun insertion wake-up filtering module. The input of the first filtering module 500 is connected to the output of the first wake-up module 200, and the output of the first filtering module 500 is connected to the vehicle body controller 400. The first filtering module 500 is configured to filter the first wake-up signal and wake up the vehicle body controller 400 based on the filtered first wake-up signal. The second filtering module 600 is a gun removal wake-up filtering module. The input of the second filtering module 600 is connected to the output of the second wake-up module 300, and the output of the second filtering module 600 is connected to the vehicle body controller 400. The second filtering module 600 is configured to filter the second wake-up signal and wake up the vehicle body controller 400 based on the filtered second wake-up signal.

[0041] In some embodiments, the wake-up device also includes a port protection module, the input end of the port protection module is connected to the vehicle charging interface, and the output end of the port protection module is connected to the first port of the charging guidance module 100. The port protection module is used to perform port protection on the vehicle charging interface when the charging gun is inserted into the vehicle charging interface or when the charging gun is unplugged from the vehicle charging interface to avoid damage to the wake-up device due to factors such as excessive port voltage and excessive port current.

[0042] In some embodiments, the first charging guidance module 110 and the second charging guidance module 120 jointly complete the processing of the CC2 signal. Specifically, since one end of the charging guidance module 100 is connected to the 12V low-voltage power supply of the electric vehicle and the other end is connected to the body ground of the electric vehicle, when the CC2 signal reaches the first port of the charging guidance module 100, the voltage of the CC2 signal will be adjusted by the first charging guidance module 110 and the second charging guidance module 120 to a range that can be detected and processed by the body controller.

[0043] In some embodiments, the charging guidance module 100 further includes a second port, wherein the first port is connected to the first wake-up module 200 and the second wake-up module 300, respectively, and the second port is connected to the vehicle body controller. During the wake-up process, the first wake-up module 200 and the second wake-up module 300 receive processed CC2 signals output by the first port, while the vehicle body controller simultaneously receives processed CC2 signals output by the second port. During the wake-up process, the vehicle body controller prioritizes the signal output by the second port. The vehicle body controller then determines whether the vehicle is in the plugged-in or unplugged wake-up state based on whether it receives the first wake-up signal output by the first wake-up module 200 or the second wake-up signal output by the second wake-up module 300. The first charging guidance module 110 assists the second charging guidance module in confirming the connection between the charging plug and the vehicle's charging port based on the CC2 signal processing results. The first charging guidance module 110 processes the CC2 signal received by the vehicle's charging port and outputs a port voltage. Depending on the port voltage, the first wake-up module 200 generates the first wake-up signal, while the second wake-up module 300 generates the second wake-up signal. The port voltage is the voltage of a preset detection point, which is a circuit node preset on the charging guidance module 100. It should be noted that in order to reduce power consumption when the vehicle is charging, the body controller will re-enter the dormant state after waking up for a period of time.

[0044] Reference Figure 3In some embodiments, the first charging guidance module 110 includes a first switching submodule and a second switching submodule. The first switching submodule and the second switching submodule are connected, and the second switching submodule is connected to the low-voltage power supply of the electric vehicle. The first port is provided in the second switching submodule, and the first port is connected to the first wake-up module 200 and the second wake-up module 300, respectively. The first switching submodule includes a transistor Q103, a resistor R106, and a resistor R107. The resistance of resistor R106 can be 4.7 kΩ, and the resistance of resistor R107 can be 47 kΩ. Transistor Q103 is an NPN transistor. Resistor R107 is connected in parallel between the base and emitter of transistor Q103, and the emitter of transistor Q103 is grounded. One end of resistor R106 is connected to the base of transistor Q103 and resistor R107, respectively. The other end of resistor R106, MCU_CHAOJ I_S2_CTL, is connected to a switch and an auxiliary power supply. The auxiliary power supply can be 3.3 V. The second switch submodule is connected to the electric vehicle's 12V regulated power supply and includes a resistor R101, a MOS transistor Q101, a resistor R4, a resistor R5, and a diode D101. The resistance of resistor R101 can be 10kΩ, the resistance of resistor R4 can be 2kΩ, and the resistance of resistor R5 can be 2kΩ. MOS transistor Q101 is an N-channel MOS transistor, and diode D101 is a Schottky diode. The 12V regulated power supply is connected to the first end of resistor R101, the cathode of diode D101, the drain of MOS transistor Q101, and the first end of resistor R5, respectively. The second end of resistor R101 and the anode of diode D101 are connected to the gate of MOS transistor Q101, respectively. The first end of resistor R4 is connected to the source of MOS transistor Q101, and the second end of resistor R4 is connected to the second end of resistor R5. The connection point between the second end of resistor R4 and the second end of resistor R5 is set as the first port.

[0045] When the charging gun is plugged into the vehicle's charging port, the first port outputs a first voltage, which is the voltage at the time of plugging in. When the charging gun is unplugged from the vehicle's charging port, the first port outputs a second voltage, which is the voltage at the time of plugging in. The voltage output by the first port is related to whether the switch is open or closed and the state of the charging gun. It should be noted that when the switch is closed, transistor Q103 is in the on state, short-circuiting resistor R107 to change the port voltage. When the switch is open, transistor Q103 is in the off state. When the charging gun is plugged into the vehicle's charging port, that is, connected to the CC2 signal source, MOS transistor Q101 is in the on state, causing the first charging guidance module to output the first voltage. When the charging gun is unplugged from the vehicle's charging port, MOS transistor Q101 is in the off state, causing the first charging guidance module to output the second voltage.

[0046] If the wake-up device does not include a port protection module, one end of the second charging guidance module 120 is connected to the first charging guidance module 110, the first wake-up module 200, and the second wake-up module 300, respectively. The second port is provided on the second charging guidance module and is connected to the vehicle body controller 400. If the wake-up device includes a port protection module, one end of the second charging guidance module 120 is connected to the first charging guidance module 110, the first wake-up module 200, the second wake-up module 300, and the port protection module, respectively, and the other end of the second charging guidance module 120 is connected to the vehicle body controller 400. The second charging guidance module 120 confirms the connection between the charging connector and the vehicle charging port based on the processing results of the CC2 signal.

[0047] The second end of resistor R4 and the second end of resistor R5 in the first charging guidance module 110 are each connected to the second charging guidance module 120. The first charging guidance module 110 is also responsible for collecting the port voltage and transmitting it to the vehicle body controller via the second port of the second charging guidance circuit 120. The vehicle body controller controls the charging status of the first charging guidance module based on the port voltage. The vehicle body controller determines the port voltage. If it reaches a preset voltage, it indicates that the charging connector is fully connected to the vehicle's charging port, allowing charging of the electric vehicle.

[0048] The second charging guidance module 120 includes a third switch submodule and a resistor-capacitor filter submodule. The third switch submodule is connected to the resistor-capacitor filter submodule. The second port is provided on the resistor-capacitor filter submodule, and the second port is connected to the vehicle body controller. The third switch submodule includes a 5V regulated power supply, resistors R27 and R28, a MOS transistor Q104, and a resistor R30. The RC filter submodule includes a resistor R29 and a capacitor C1. The resistance of resistor R27 can be 10kΩ, the resistance of resistor R28 can be 1kΩ, the resistance of resistor R29 can be 10kΩ, and the resistance of resistor R30 can be 10kΩ. The capacitance of capacitor C1 can be 0.1μF. MOS transistor Q104 is an N-channel MOS transistor. The 5V regulated power supply is connected to the first end of resistor R28, the second end of resistor R28 is connected to the first end of resistor R30 and the gate of MOS transistor Q104, respectively. The second end of resistor R30 is grounded. The first end of resistor R27 is connected to the first port, specifically to the first charging guidance module 110, the first wake-up module 200, and the second wake-up module 300. The second end of resistor R27 is connected to the drain of MOS transistor Q104. Resistor R29 and capacitor C1 are connected in parallel to form a branch circuit, with the first end of the branch circuit connected to the source of MOS transistor Q104 and the second end of the branch circuit connected to ground. The first end of the branch circuit, also known as the second port, is MCU_CHAOJ ICC2_AD, which is connected to the body controller and is used to output a third voltage to the body controller.

[0049] The first wake-up module 200 includes a first capacitor C2, a first resistor R9, a second resistor R6, a first diode D2, and a transistor Q3. The first diode D2 is a Schottky diode, the capacitance of the first capacitor C2 can be 1μF, the resistance of the first resistor R9 can be 4.7kΩ, the resistance of the second resistor R6 can be 4.7kΩ, and the transistor Q3 is a PNP transistor. The first end of the first capacitor C2 is connected to the port protection module or the vehicle charging interface, the second end of the first capacitor C2 is connected to the first end of the first resistor R9, the second end of the first resistor R9 is respectively connected to the first end of the second resistor R6, the positive electrode of the first diode D2, and the base of the transistor Q3, and the collector of the transistor Q3 is used to output the first wake-up signal. When the charging gun is inserted into the vehicle charging port, the current of the charging gun passes through the vehicle CC1 DC charging port and the port protection module. Under the action of the first charging guidance module 110, the voltage at the first end of the first capacitor C2, that is, the port voltage, drops. According to the principle that the voltage across the capacitor will not change suddenly, the voltage at the first end of the first capacitor C2 drops, and the voltage at the second end also drops, causing the transistor Q3 to be in the on state. Because the capacitor has the function of passing AC and isolating DC, the first wake-up module generates a pulse signal of time t1 to obtain the first wake-up signal. t1 is the gun insertion wake-up time, that is, the time to wake up the body controller. When the vehicle is in the charging state, the first wake-up module generates a low-level signal to put the body controller into the dormant state. When the vehicle is fully charged and the charging gun is unplugged, the action of unplugging the gun causes the voltage at the first end of the capacitor C2 to rise, causing the transistor Q3 to be in the off state, and the first wake-up module outputs a low-level signal.

[0050] Since the first capacitor C2 only generates a signal when the voltage suddenly changes, the first wake-up signal can be an edge-triggered signal. The first wake-up signal has a rising edge and a falling edge. The rising edge time is t11 and the falling edge time is t12, and t1 is between t11 and t12. The wake-up signal used to trigger the body controller can be designed according to the wake-up source trigger requirements. The rising edge or falling edge is selected based on the wake-up source trigger requirements. To meet the edge wake-up conditions, adjust the parameters such as the first capacitor C2 and the first resistor R9 to set the edge time and voltage peak of the gun plug wake-up signal.

[0051] The collector of transistor Q3 can also be connected to the first filtering module, which includes a fifth resistor R7, a third capacitor C4, and a sixth resistor R8. The resistance of the fifth resistor R7 can be 4.7kΩ, the resistance of the sixth resistor R8 can be 10kΩ, and the capacitance of the third capacitor C4 can be 0.1μF. The fifth resistor R7 and the sixth resistor R8 are connected in series, and the sixth resistor R8 and the third capacitor C4 are connected in parallel. One end of the sixth resistor R8 and the third capacitor C4 is grounded, and the other ends of the sixth resistor R8 and the third capacitor C4 can both serve as output pins, which can be used to output the INSERT_WAKEUP signal.

[0052] The second wake-up module 300 includes a second capacitor C5, a third resistor R10, a fourth resistor R11, and a second diode D4. Since the port voltage will drop when the charging gun performs the gun insertion action, in order to avoid the port generating a large negative voltage in the gun insertion state and falsely triggering the second wake-up circuit, a diode D4 is set to clamp the port voltage so that the second wake-up module outputs a low-level signal when the charging gun performs the gun insertion action. The capacitance of the second capacitor C5 can be 1, the resistance of the third resistor R10 can be 10kΩ, the resistance of the fourth resistor R11 can be 100kΩ, and the second diode D4 uses an ordinary diode. The second capacitor C5 is connected to the third resistor R10, and the third resistor R10 is respectively connected to the first end of the fourth resistor R11 and the cathode of the second diode D4. The second end of the fourth resistor R11 is grounded and the positive electrode of the second diode D4 is grounded. The cathode of the second diode D4 is used to output the second wake-up signal. When the charging gun is unplugged from the vehicle charging port, the port voltage rises. According to the principle that the voltage across the capacitor will not change suddenly, the port voltage of the second capacitor C5 will also rise when it rises. Because the capacitor has the function of passing AC and blocking DC, the second wake-up module generates a pulse signal with a time of t2 to obtain the second wake-up signal. t2 is the gun unplug wake-up time, that is, the time to wake up the vehicle body controller.

[0053] Because the second capacitor C5 generates signals only through voltage mutations, the second wake-up module can generate an edge-triggered signal, resulting in a rising edge and a falling edge. The rising edge time is t21, the falling edge time is t22, and t2 is between t21 and t22. Similarly, the rising or falling edge can be selected to trigger the wake-up based on the wake-up source trigger requirements of the vehicle body controller. To meet the edge wake-up conditions, the second capacitor C5 and the third resistor R10 are adjusted to set the edge time and voltage peak of the gun-drawing wake-up signal.

[0054] The cathode of the second diode D4 is also connected to the second filtering module, which includes a seventh resistor R12 and a fourth capacitor C6. The resistance of the seventh resistor R12 can be 10 kΩ, and the capacitance of the fourth capacitor C6 can be 0.1 μF. The cathode of the second diode D4 is connected to the first end of the seventh resistor R12, the second end of the seventh resistor R12 is connected to the first end of the fourth capacitor C6, and the second end of the fourth capacitor C6 is grounded. The first end of the fourth capacitor C6 can serve as an output pin for outputting the filtered second wake-up signal PULLOUT_WAKEUP.

[0055] The port protection module includes diode D103, capacitors C103, and C106. Capacitors C103 and C106 are connected in series and in parallel with diode D103. Diode D103 is a bidirectional transient voltage suppressor (TVS) diode that quickly absorbs transient voltage disturbances such as overvoltage, overvoltage, and static electricity, protecting components and devices within the circuit from damage. One end of diode D103 is grounded, and the other end is connected to L4_CHAOJ I_CC2, the first wake-up module, the second wake-up module, and the second charge guidance circuit.

[0056] In a second aspect, embodiments of the present invention further provide an electric vehicle comprising the body controller wake-up device described in the first aspect. This electric vehicle employs the body controller wake-up device to wake up the body controller both when the charging plug is plugged in and out, thereby preventing damage to the charging station caused by starting the electric vehicle while the plug is plugged in.

[0057] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A vehicle body controller wake-up device, characterized in that: Applicable to electric vehicles, the electric vehicles are provided with a low-voltage power supply, including: A charging guidance module, the charging guidance module comprising a first charging guidance module and a second charging guidance module, the first charging guidance module being configured to be connected to the low-voltage power supply, and the second charging guidance module being configured to be connected to a body ground of the electric vehicle; the charging guidance module comprising a first port being configured to be connected to a vehicle charging interface of the electric vehicle, the charging guidance module being configured to process a charging connection confirmation signal received by the vehicle charging interface; a first wake-up module, wherein an input end of the first wake-up module is connected to the first port, an output end of the first wake-up module is used to connect to a body controller of the electric vehicle, and the first wake-up module is used to generate a first wake-up signal to wake up the body controller when a charging gun is inserted into the vehicle charging port; A second wake-up module, wherein the input end of the second wake-up module is connected to the first port, the output end of the second wake-up module is used to connect to the body controller, and the second wake-up module is used to generate a second wake-up signal to wake up the body controller when the charging gun is unplugged from the vehicle charging interface.

2. The vehicle body controller awakening device according to claim 1, characterized in that: The first charging guidance module includes a first switch submodule and a second switch submodule, the first switch submodule and the second switch submodule are connected, the second switch submodule is connected to the low-voltage power supply, the first port is set on the second switch submodule, and the first port is connected to the first wake-up module and the second wake-up module respectively.

3. The vehicle body controller awakening device according to claim 1, characterized in that: The charging guidance module also includes a second port, which includes a third switch submodule and a resistor-capacitor filter submodule. The third switch submodule is connected to the resistor-capacitor filter submodule. The second port is set in the resistor-capacitor filter submodule, and the second port is used to connect to the body controller.

4. The vehicle body controller awakening device according to claim 1, characterized in that: The awakening device further includes: a first filtering module, wherein an input end of the first filtering module is connected to an output end of the first wake-up module, an output end of the first filtering module is used to be connected to the vehicle body controller, and the first filtering module is used to filter the first wake-up signal; The second filtering module has an input end connected to the second wake-up module, an output end of the second filtering module is used to connect to the vehicle body controller, and the second filtering module is used to filter the second wake-up signal.

5. The vehicle body controller awakening device according to claim 1, characterized in that: The awakening device further includes a port protection module, wherein an input end of the port protection module is used to be connected to the vehicle charging interface, and an output end of the port protection module is connected to the first port.

6. A vehicle body controller awakening device according to any one of claims 1 to 5, characterized in that: The first wake-up module includes a first capacitor, a first resistor, a second resistor, a first diode and a transistor, the first capacitor is connected to the first resistor, the first resistor is respectively connected to the second resistor, the first diode and the transistor; the collector of the transistor is used to output the first wake-up signal.

7. A vehicle body controller awakening device according to any one of claims 1 to 5, characterized in that: The second wake-up module includes a second capacitor, a third resistor, a fourth resistor and a second diode, the second capacitor is connected to the third resistor, and the third resistor is connected to the fourth resistor and the second diode respectively; the positive electrode of the second diode is grounded, and the negative electrode of the second diode is used to output the second wake-up signal.

8. The vehicle body controller awakening device according to claim 4, characterized in that: The first filtering module includes a fifth resistor, a third capacitor and a sixth resistor, one end of the fifth resistor is connected to the first wake-up module, and the other end of the fifth resistor is connected to the third capacitor and the sixth resistor respectively.

9. The vehicle body controller awakening device according to claim 4, characterized in that: The second filtering module includes a seventh resistor and a fourth capacitor, one end of the seventh resistor is connected to the second wake-up module, and the other end of the seventh resistor is connected to the fourth capacitor.

10. An electric vehicle, characterized in that: A vehicle body controller wake-up device comprising the device described in any one of claims 1 to 9.

Images