New energy vehicle upper-mounted power supply control method and system, and new energy vehicle

Abstract

The application relates to the technical field of new energy vehicles, and discloses a new energy vehicle upper-mounted power supply control method and system and a new energy vehicle. The method is applied to a power domain controller of a new energy vehicle upper-mounted power supply system, and comprises the following steps: when a power-off signal is detected, the current function state of a to-be-upper-mounted power supply equipment is detected; when the current function state is a function-off state, a high-voltage contactor between the to-be-upper-mounted power supply equipment and an upper-mounted power source is disconnected to complete upper-mounted power-off. According to the application, when the power-off signal is detected, the current function state of the to-be-upper-mounted power supply equipment is first detected, if the current function state is a function-off state, the high-voltage contactor is disconnected to complete upper-mounted power-off. Compared with the prior art of directly performing upper-mounted power-off through a vehicle key, the application can perform upper-mounted power-off after ensuring that the current function of the to-be-upper-mounted power supply equipment is off, thereby avoiding load power-off, preventing high-voltage contactor sticking, and improving safety.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to a power supply control method and system for a new energy vehicle and a new energy vehicle. Background Technology

[0002] Currently, in order to meet the needs of some users, new energy electric vehicles can be modified into special vehicles, that is, relevant superstructure equipment is added to the new energy electric vehicles, and the new energy electric vehicles are used to supply power and control the superstructure equipment.

[0003] However, existing users typically turn off the key to power off the new energy electric vehicle directly when disconnecting the power supply to the superstructure. If the function of the superstructure equipment is not turned off at this time, it is easy to disconnect the power while it is under load, which may cause the high-voltage contactor connecting the vehicle and the superstructure equipment to stick together, resulting in low safety.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a power supply control method, system, and new energy vehicle for new energy vehicle superstructures. It aims to solve the technical problem in the prior art where, if the function of the superstructure equipment is not turned off, directly powering it down via the vehicle key can easily cause the high-voltage contactor connecting the vehicle and the superstructure equipment to stick together, resulting in low safety.

[0006] To achieve the above objectives, the present invention provides a power supply control method for a new energy vehicle, the method being applied to the power domain controller of a new energy vehicle's power supply system, the method comprising the following steps:

[0007] When a power-down signal is detected, the current functional status of the power supply equipment to be installed is checked;

[0008] When the current function status is the function off state, disconnect the high-voltage contactor between the power supply equipment to be installed and the power supply to complete the power supply to the installation.

[0009] Optionally, the step of detecting the current functional state of the power supply equipment to be installed when a power-down signal is detected includes:

[0010] When a power-down signal is detected, check whether a function shutdown success signal is received from the upper-mount controller of the power supply equipment to be installed;

[0011] Upon receiving a signal indicating that the function has been successfully disabled, the current function status is determined to be disabled.

[0012] Optionally, after the step of detecting whether a function shutdown success signal is received from the upper-mount controller of the power supply equipment to be installed when a power-down signal is detected, the method further includes:

[0013] Stop supplying low-voltage power to the superstructure controller if no successful function shutdown signal is received;

[0014] Disconnecting the high-voltage contactor between the power supply of the superstructure and the load connected to the superstructure controller completes the power-off of the superstructure.

[0015] Optionally, before the step of detecting whether a function shutdown success signal has been received from the upper-mount controller of the power supply equipment to be installed, the method further includes:

[0016] Detect whether a power supply shutdown signal for the upper unit is received within a preset time period;

[0017] If so, then execute the step of detecting whether a function shutdown success signal has been received from the upper-mount controller of the power supply equipment to be installed;

[0018] If not, then proceed with the step of stopping the low-voltage power supply to the superstructure controller.

[0019] Optionally, before the step of detecting the current functional state of the power supply equipment to be installed when a power-down signal is detected, the method further includes:

[0020] Upon receiving a power-on signal, check for faults in the vehicle and its power supply equipment.

[0021] If not, then close the high-voltage contactor between the power supply equipment to be installed and the power supply to complete the power supply to the installation.

[0022] Optionally, the step of detecting whether there is a fault in the vehicle and the power supply equipment when a power-on signal is received includes:

[0023] Upon receiving a power-on signal, the upper-mount controller of the power supply equipment to be installed is powered on at low voltage, so that the upper-mount controller can feed back a fault signal when the power supply equipment to be installed experiences a high-voltage fault.

[0024] It detects whether the fault signal is received and whether there is a fault in the whole vehicle.

[0025] Optionally, after the step of closing the high-voltage contactor between the power supply equipment to be installed and the power supply, the method further includes:

[0026] Continuously monitor whether the fault signal is received and detect whether there is a fault in the vehicle;

[0027] Upon receiving the fault signal or detecting a fault in the vehicle, the low-voltage power supply to the superstructure controller is stopped, and the high-voltage contactor between the superstructure power supply and the load connected to the superstructure controller is disconnected to complete the power-off of the superstructure.

[0028] In addition, to achieve the above objectives, the present invention also proposes a power supply control system for new energy vehicles, the system comprising: a power domain controller;

[0029] The power domain controller is connected to the power supply equipment to be installed and the high-voltage contactor, respectively. The high-voltage contactor is connected to the power supply and the power supply equipment to be installed, respectively.

[0030] The power domain controller is used to detect the current functional status of the power supply equipment to be installed when a power-down signal is detected.

[0031] The power domain controller is also used to disconnect the high-voltage contactor between the power supply equipment to be installed and the power supply to complete the power supply disconnection when the current function state is the function off state.

[0032] Optionally, the power domain controller is further configured to detect whether a function shutdown success signal is received from the superstructure controller of the power supply equipment to be installed when a power-down signal is detected;

[0033] The power domain controller is further configured to recognize the current function state as a function-off state when it receives the function-off success signal.

[0034] In addition, to achieve the above objectives, the present invention also proposes a new energy vehicle, which includes a power supply control system for new energy vehicles as described above.

[0035] This invention provides a method, system, and vehicle for controlling the power supply of a new energy vehicle's upper structure. The method is applied to the power domain controller of the upper structure power supply system in a new energy vehicle. The method includes the following steps: upon detecting a power-down signal, detecting the current functional state of the power supply device to be installed; if the current functional state is a function-off state, disconnecting the high-voltage contactor between the power supply device to be installed and the upper structure power supply to complete the power-down process. Because this invention can first detect whether the current functional state of the power supply device to be installed is a function-off state when a power-down signal is detected, and only disconnect the high-voltage contactor if it is, this invention, compared to existing methods that directly power on / off the upper structure via the vehicle key, can perform power-down after ensuring the current function of the power supply device is off, avoiding power-down under load, preventing high-voltage contactor sticking, and improving safety. Attached Figure Description

[0036] Figure 1A flowchart of a first embodiment of the new energy vehicle upper-mounted power supply control method of the present application is shown in FIG. 1.

[0037] Figure 2 A circuit connection diagram of the power domain controller in the new energy vehicle upper-mounted power supply control method of the present application is shown in FIG. 2.

[0038] Figure 3 A flowchart of the upper-mounted power supply control method of the present application is shown in FIG. 3.

[0039] Figure 4 A flowchart of a second embodiment of the new energy vehicle upper-mounted power supply control method of the present application is shown in FIG. 4.

[0040] Figure 5 A flowchart of a third embodiment of the new energy vehicle upper-mounted power supply control method of the present application is shown in FIG. 5.

[0041] Figure 6 A flowchart of the upper-mounted power supply control method of the present application is shown in FIG. 3.

[0042] Figure 7 A structural block diagram of a first embodiment of the new energy vehicle upper-mounted power supply control system of the present application is shown in FIG. 6.

[0043] Figure 8 A structural block diagram of a second embodiment of the new energy vehicle upper-mounted power supply control system of the present application is shown in FIG. 7.

[0044] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0045] It should be understood that the specific embodiments described herein are intended to be illustrative only and not limiting of the present application.

[0046] The embodiments of the present application provide a new energy vehicle upper-mounted power supply control method, which will be described with reference to Figure 1 , Figure 1 A flowchart of a first embodiment of the new energy vehicle upper-mounted power supply control method of the present application is shown in FIG. 1.

[0047] In the present embodiment, the new energy vehicle upper-mounted power supply control method comprises the following steps:

[0048] Step S10: detecting the current function state of the to-be-mounted power supply device when the power-off signal is detected.

[0049] It should be noted that the method in this embodiment can be applied to scenarios involving power supply control of superstructure equipment in new energy vehicles, or other scenarios requiring power supply control. The method in this embodiment can be applied to a power domain controller within a power supply control system for new energy vehicle superstructures. The executing entity of this embodiment can be a computing service device with functions for power supply control, network communication, and program execution in new energy vehicle superstructures, such as a power domain controller, or other electronic devices implementing the same or similar functions. The following description uses the aforementioned power domain controller (hereinafter referred to as PMS) to illustrate this embodiment and the subsequent embodiments.

[0050] Understandably, the aforementioned power-off signal can be generated when the user turns off the vehicle key. If the user turns the vehicle key to the OFF position, it indicates that the vehicle will be powered off, and the vehicle can generate a power-off signal. When the PMS detects the power-off signal, it can detect the current functional status of the power supply equipment to be installed.

[0051] It should be understood that the aforementioned power supply equipment to be installed can be any type of equipment installed on a new energy vehicle. This embodiment does not impose any specific limitations. The power supply for the aforementioned power supply equipment can be provided by the power battery of the new energy vehicle. For ease of understanding, please refer to... Figure 2 , Figure 2 This is a circuit connection diagram of the power domain controller in the power supply control method for new energy vehicles of the present invention, as shown below. Figure 2 As shown, the connection between the new energy vehicle and the power supply equipment to be installed can be divided into a high-voltage section and a low-voltage section. The high-voltage section can be the power supply circuit inside the power supply equipment to be installed, which connects to the high-voltage control module through the power input interface of the new energy vehicle. Figure 2 The HCM is connected to the power distribution unit (HCM) of the new energy vehicle. Figure 2 The PDU (Power Distribution Unit) can be connected to the power battery of a new energy vehicle (not shown in the figure) to transmit the high voltage of the power battery to the power supply equipment to be installed.

[0052] It should also be noted that the aforementioned current functional status can refer to whether the functions of the power supply equipment to be installed are enabled. Users can complete the corresponding functions through the power supply equipment to be installed, and continue as follows: Figure 2 As shown, the aforementioned power supply equipment to be installed may also include an upper-mount controller. Figure 2 In the BBM (Power Supply Management System), users can control the power supply equipment to be installed to perform related functions. If the BBM is powered on, the current function status of the power supply equipment to be installed can be considered as the function is enabled. If the BBM is powered off, the current function status of the power supply equipment to be installed can be considered as the function is disabled.

[0053] Understandably, the low-voltage section may include a circuit connecting the BBM and PMS, i.e. Figure 2 The BBM connects to the PMS via a pre-reserved interface on the chassis of the new energy vehicle.

[0054] Furthermore, in order to accurately obtain the current functional status of the power supply equipment to be installed, in this embodiment, step S10 includes:

[0055] Step S11: When a power-down signal is detected, check whether a function shutdown success signal is received from the upper-mount controller of the power supply equipment to be installed.

[0056] It should be understood that, as Figure 2 As shown, the low-voltage section may also include a gateway ( Figure 2 The GW can be connected to the PMS and HCM via signal lines CAN1_H and CAN1_L, and can be connected to the chassis reserved interface via signal lines CAN2_H and CAN2_L. Then, it can be connected to the BBM via the chassis reserved interface, and the BBM can send the signal corresponding to the current functional status to the PMS through the GW.

[0057] It should be noted that when the current functional status of the equipment to be powered is in the function start state, the BBM can send a function start signal to the PMS, and when the current functional status of the equipment to be powered is in the function stop state, it can send a function stop success signal to the PMS.

[0058] Step S12: Upon receiving the signal indicating that the function has been successfully disabled, the current function state is determined to be the disabled state.

[0059] In the specific implementation, when the PMS detects the power-down signal, it can detect whether it has received the function shutdown success signal sent by the BBM. If so, it can determine that the current function status of the power supply equipment to be installed is the function shutdown state; if not, it can determine that the current function status of the power supply equipment to be installed is the function startup state.

[0060] Step S20: When the current function state is the function off state, disconnect the high-voltage contactor between the power supply equipment to be installed and the power supply to complete the power supply disconnection.

[0061] Understandably, continuing as Figure 2 As shown, a high-voltage contactor may be installed in the HCM. Figure 2 (K1) The high-voltage contactor can control whether the power supply circuit between the PDU and the power supply equipment to be installed is connected. Figure 2 The PMS is connected to the HCM, which allows the PMS to control the high-voltage contactor to turn on and off.

[0062] It should be understood that when supplying power to the equipment to be supplied with power, the PMS can control the high-voltage contactor to switch from open to closed, and when unloading the equipment to be supplied with power, the PMS can control the high-voltage contactor to switch from closed to open.

[0063] In practical implementation, when the PMS receives the function shutdown success signal sent by the BBM, it can determine that the current function of the power supply equipment to be installed is shut down. Then, the PMS can control the high-voltage contactor to disconnect, avoid powering off under load, prevent the high-voltage contactor from sticking together, and improve safety.

[0064] Furthermore, in order to detect the power-down signal, in this embodiment, the low-voltage section may also include a multimedia interactive system (…). Figure 2 MMI and instruments Figure 2 (Chinese IC);

[0065] The MMI can be connected to the IC. The MMI can also be connected to CAN3_H and CAN3_L and GW via signal lines. The MMI can also be connected to the vehicle's infotainment system to detect whether the vehicle key is OFF. The IC can be used to display the status in the MMI for easy observation and operation by the user.

[0066] It is important to emphasize that existing methods for controlling the power supply to the superstructure typically rely on hard switches, which are not very safe and require a dedicated button panel for the superstructure, resulting in higher component costs. Therefore, in this embodiment, a superstructure control application (APP) can be set within the MMI. Power supply control can be achieved through soft switches within the APP, while control commands can be input via the control panel on the vehicle's infotainment system. To further understand the superstructure power-off process, refer to... Figure 3 , Figure 3 This is a schematic diagram of the power supply control method for new energy vehicles of the present invention, showing the process of powering on and off the upper structure. Figure 3 As shown, the normal power-on / off process of the MMI is as follows: The MMI first detects that the key status is not OFF, and then checks whether the power soft switch of the upper device control APP on the control panel has been pressed again. This is because the upper device can be powered on by pressing the power soft switch. Otherwise, it waits for the power soft switch to be pressed again. If it is pressed, it sends a power switch pressed signal to the PMS, and at the same time sends an upper device high voltage power supply shutdown signal to the PMS and BBM. It checks whether it receives a signal that the upper device power supply has been successfully shut down. If it does, the upper device power supply function has been successfully shut down and the process ends.

[0067] The normal power-on / off procedure of the PMS is as follows: after receiving the key status as OFF or receiving the power switch pressed signal, it determines whether it has received the power supply shutdown signal for the upper device. If so, it determines whether it has received the function shutdown success signal. If so, it sends an enable invalid signal to the HCM so that the HCM disconnects the high-voltage contactor after receiving the enable invalid signal, the power supply function of the upper device is successfully shut down, and the process ends.

[0068] The normal power-on / off procedure for the BBM superstructure is as follows: If a superstructure power-off signal is received, the function will remain on until the superstructure power-off signal is received. If the signal is received, the superstructure function will be turned off, and a function shutdown success signal will be sent to the MMI and PMS, and the process will end.

[0069] It should be noted that the above workflow is under normal circumstances, i.e., when the key is not in the OFF state. However, in actual practice, users will directly set the vehicle key to OFF. In this case, the MMI workflow is as follows: The MMI determines that the key is OFF, sends the key status to the PMS, and sends a power supply shutdown signal to the PMS and BBM. It then checks whether it receives a power supply shutdown success signal. If not, it indicates that the BBM function has failed to shut down. The timer can then start when the key is OFF or the power switch is pressed again. It checks whether the power supply shutdown success signal is received within 3 seconds. If not, the system shuts down normally. If it is, the vehicle system records the fault or displays the fault through the IC and forces the MMI to shut down and go into sleep mode.

[0070] In this embodiment, when the PMS detects a power-down signal, it can detect whether it has received a function shutdown success signal sent by the BBM. If so, it can determine that the current function status of the power supply equipment to be installed is the function shutdown state. Then, the PMS can control the high-voltage contactor to disconnect, avoid powering down under load, prevent the high-voltage contactor from sticking, and improve safety.

[0071] refer to Figure 4 , Figure 4 This is a flowchart illustrating the second embodiment of the power supply control method for new energy vehicles according to the present invention.

[0072] The first embodiment described above illustrates the power-off process for the PMS, MMI, and BBM under normal conditions, i.e., when the key is ON and the user presses the power soft switch again on the MMI and disables the upper-body function on the BBM. It also describes the power-off process when the key is OFF, but the user presses the power soft switch again on the MMI and disables the upper-body function on the BBM. However, considering that users may not follow the normal procedure in actual operation—that is, they may not disable the upper-body function first and may not press the power soft switch again before turning the key OFF—this could cause the high-voltage contactor to lose power under load, and thus... Figure 4As shown, after step S11 above, the following steps are also included:

[0073] Step S111: If no successful function shutdown signal is received, stop low-voltage power supply to the upper device controller.

[0074] Step S112: Disconnect the high-voltage contactor between the power supply of the upper unit and the load connected to the upper unit controller to complete the power-off of the upper unit.

[0075] It should be noted that the load connected to the aforementioned superstructure controller can be a load within the power supply equipment to be superstructured, used to perform related functions, such as a motor. In this embodiment, the load can be connected to the BBM to control the load to perform related functions. At the same time, the load can be connected to the high-voltage contactor through the superstructure power supply circuit to receive power from the superstructure.

[0076] It should also be noted that when supplying power to the upper-mounted equipment, the BBM should generally be powered on at low voltage first, and then the upper-mounted power supply circuit of the equipment to be powered on should be supplied. When the upper-mounted equipment is powered off, since the user will normally disable the upper-mounted function through the BBM, the high-voltage contactor can be disconnected first, and then the low-voltage power supply to the BBM can be stopped. Figure 2 The PMS can control the low-voltage power supply of the BBM by connecting it to the chassis via a reserved interface.

[0077] Understandably, continuing as Figure 4 As shown, if the PMS does not receive a successful function shutdown signal, it indicates that the BBM's upper-mount function has not been shut down. Since the BBM does not send a successful function shutdown signal, the PMS can directly stop powering on the BBM to force the BBM to terminate the upper-mount function and stop the upper-mount operation. Then, it can send an enable invalid signal to the HCM to disconnect the high-voltage contactor and terminate the operation.

[0078] In practice, when a user does not disable the BBM's upper-mount function but directly switches the key status to OFF, the PMS can directly disconnect the low-voltage power supply to the BBM, forcibly stopping the BBM's upper-mount function, and then disconnect the high-voltage contactor, thereby preventing the high-voltage contactor from sticking and improving safety.

[0079] Furthermore, considering that when the MMI does not send a power-off signal for the upper structure, i.e., the user does not press the power soft switch again through the MMI but directly sets the key state to OFF, in order for the PMS to complete the power-off of the upper structure, it continues as follows... Figure 2 As shown, before the step of detecting whether a function shutdown success signal has been received from the upper-mount controller of the power supply equipment to be installed, the following steps are also included:

[0080] Detect whether a power supply shutdown signal for the upper unit is received within a preset time period;

[0081] If so, then execute the step of detecting whether a function shutdown success signal has been received from the upper-mount controller of the power supply equipment to be installed;

[0082] If not, then proceed with the step of stopping the low-voltage power supply to the superstructure controller.

[0083] It should be understood that the aforementioned PMS, when not receiving a power-off signal from the upper device, can start timing when the key is OFF or the power soft switch is pressed again, to determine whether a power-off signal from the upper device has been received within a preset time (i.e., Figure 3 If the received signal times out, the low-voltage power supply to the BBM can be disconnected, forcing the upper device function to stop. If the timeout does not occur, the timer can continue until the preset duration is reached. When the upper device power supply is turned off, it is determined whether a function shutdown success signal has been received. The preset duration can be set according to the actual situation.

[0084] In this embodiment, when the user does not disable the BBM's upper-body function but directly sets the key to OFF, the PMS can directly disconnect the low-voltage power supply to the BBM, forcibly stopping the BBM's upper-body function, and then disconnect the high-voltage contactor, thereby preventing the high-voltage contactor from sticking and improving safety. At the same time, when the PMS does not receive the upper-body power supply shutdown signal but directly sets the key to OFF, it can start timing when the key is OFF or the power soft switch is pressed again to determine whether the upper-body power supply shutdown signal is received within a preset time. If not, the low-voltage power supply to the BBM can be disconnected, forcibly stopping the upper-body function.

[0085] refer to Figure 5 , Figure 5 This is a flowchart illustrating the third embodiment of the power supply control method for new energy vehicles according to the present invention.

[0086] Considering that the current system does not acquire the fault status of the BBM and PMS during power supply, users may still attempt to supply power to the device via the PMS even if the BBM or PMS fails, resulting in low security. To address this issue, such as... Figure 5 As shown, before step S10 above, the following steps are also included:

[0087] Step S01: Upon receiving the power-on signal, check whether there is a fault in the vehicle and the power supply equipment of the superstructure;

[0088] Step S02: If not, close the high-voltage contactor between the power supply equipment to be installed and the power supply to complete the power supply to the equipment.

[0089] It should be noted that the above power-on signal can be triggered when the user sets the vehicle key to the ON position. When the key is in the ON position, high voltage can be applied to the PDU. When the PDU is successfully powered, the PMS can detect whether there is a fault in the vehicle and whether there is a high voltage fault in the power supply equipment. If there is no fault, the high voltage contactor can be closed to supply power to the upper structure.

[0090] Furthermore, in order for the PMS to detect whether there is a fault in the power supply equipment to be installed, in this embodiment, the above step S01 includes:

[0091] Step S011: Upon receiving the power-on signal, the upper-mount controller of the power supply equipment to be installed is powered on at low voltage, so that the upper-mount controller can feed back a fault signal when the power supply equipment to be installed experiences a high-voltage fault.

[0092] Step S012: Detect whether the fault signal is received and detect whether there is a fault in the whole vehicle.

[0093] For easier understanding, please refer to Figure 6 , Figure 6 This is a schematic diagram of the power supply process in the power supply control method for new energy vehicles of the present invention, as shown below. Figure 6 As shown, when the vehicle key is detected to be ON and the PDU is successfully powered on with high voltage, the BBM can be powered on with low voltage. When the BBM is successfully powered on with low voltage, it can perform a self-test to determine whether there is a high voltage fault in the power supply equipment to be installed. If so, the high voltage fault will be displayed in the instrument panel pop-up window, and a fault signal will be fed back to the PMS. The PMS can determine whether there is a high voltage fault in the power supply equipment to be installed by detecting whether a fault signal is received, and at the same time detect whether there is a fault in the whole vehicle.

[0094] Furthermore, to facilitate user control of the power supply to the installation unit via soft switching on the MMI, in this embodiment, the following continues... Figure 6As shown, the MMI's upper-body power supply process is as follows: When the vehicle is detected to be in the ON position, the vehicle system completes a self-test without any faults. It then determines whether the power soft switch of the upper-body control APP in the vehicle system control panel is pressed. If not, it waits for it to be pressed. If it is pressed, it sends an upper-body power supply valid signal to the PMS and then checks whether an upper-body power supply success signal is received. If not, it starts timing when the power soft switch is pressed and checks whether the received upper-body power supply success signal exceeds 1 second. If so, the power soft switch changes from white to gray, indicating a power failure (in this embodiment, different colors can be used to distinguish the state of the power soft switch, including white, gray, and green). Otherwise, it continues to wait. Upon receiving a successful power supply signal from the upper body, the power soft switch on the vehicle's instrument panel changes from white to green, indicating successful power supply. It then checks if the user has activated the corresponding function button in the upper body control app. If not, it waits; if so, it sends the corresponding work request signal to the BBM. It then checks if a successful function activation signal has been received. If not, it starts a timer when the function button is pressed and checks if more than 2 seconds have passed since the successful activation signal was received. If so, the function button changes from white to gray, indicating function activation failure. Otherwise, it waits. Upon receiving the corresponding successful function activation signal, the function button changes from white to green, indicating successful function activation, and then execution can proceed. Figure 3 The corresponding process for MMI is to determine whether the key status is OFF.

[0095] Understandably, continuing as Figure 2 As shown, a pre-charge circuit can also be provided inside the HCM, and the pre-charge circuit may include a pre-charge resistor ( Figure 2 (R) and precharge contactor ( Figure 2 In K2), the first end of the pre-charge resistor is connected to the first end of the high-voltage contactor, the second end of the pre-charge resistor is connected to the first end of the pre-charge contactor, and the second end of the pre-charge contactor is connected to the second end of the high-voltage contactor.

[0096] The PMS upper-mount power supply process is as follows: First, the vehicle is detected as ON. When the PDU successfully connects to high voltage, the BBM is powered on with low voltage. It checks if a valid upper-mount power supply signal is received. If not, it waits. If yes, it checks for vehicle malfunctions and, by checking for malfunction signals, determines if the equipment to be powered has a high-voltage malfunction. If yes, the upper-mount power supply process exits, and the vehicle's instrument panel displays either a vehicle malfunction or a high-voltage malfunction for the equipment to be powered. If no, it sends an enable signal to the HCM, causing the HCM to control the pre-charge contactor to close for pre-charging. It checks if pre-charging is complete. If not, it checks if the pre-charging time exceeds 0.5 seconds. If not, it continues pre-charging. If yes, pre-charging fails, and the upper-mount power supply process exits. The instrument panel displays an upper-mount pre-charging malfunction. When pre-charging is complete, the HCM controls the high-voltage contactor to close, disconnecting the pre-charge contactor, thus successfully supplying high-voltage power to the upper-mount. An upper-mount operation permission signal is sent to the BBM. After receiving the corresponding function activation success signal, the instrument panel displays a power-on prompt, and then execution can proceed. Figure 3 The PMS receives a signal indicating that the key is OFF or the power switch is pressed.

[0097] The BBM power supply process is as follows: After the BBM receives the low-voltage power-on signal from the PMS, the BBM successfully powers on the low-voltage power-on and performs a self-check to determine if a high-voltage fault exists. If so, the vehicle's instrument panel displays a high-voltage fault and sends a fault signal back to the PMS. Otherwise, it receives the upper structure work permission signal and checks if the corresponding work request signal has been received. If not, it waits. If so, it controls the upper structure power supply equipment to perform the corresponding function and checks if the corresponding function is successfully activated. If not, the vehicle's instrument panel displays an upper structure mechanical fault. If so, it sends the corresponding function activation success signal to the MMI, and then can proceed with the operation. Figure 3 Does the BBM receive a power-off signal from the upper unit?

[0098] In its implementation, the PMS can power on the BBM at low voltage upon receiving a power-on signal, enabling the BBM to perform a self-test. If a high-voltage fault occurs, the PMS can send a fault signal back to the PMS. If the PMS does not receive a fault signal or detect any fault in the vehicle, it can close the pre-charge contactor to perform pre-charge. Once the pre-charge is complete, it can close the high-voltage contactor to power the superstructure. This allows for the detection of faults before powering on the superstructure, further enhancing safety.

[0099] Furthermore, in order to perform fault monitoring on the entire vehicle and the power supply equipment to be installed while the power supply equipment to be installed is performing its corresponding function, in this embodiment, after step S012, the following is also included:

[0100] Step S013: Continuously detect whether the fault signal is received and detect whether there is a fault in the whole vehicle;

[0101] Step S014: When the fault signal is received or the fault of the vehicle is detected, stop the low-voltage power supply to the superstructure controller and disconnect the high-voltage contactor between the superstructure power supply and the load connected to the superstructure controller to complete the power-off of the superstructure.

[0102] Continue as Figure 6 As shown, after sending the superstructure operation permission signal, the PMS can continuously detect whether there is a level 3 fault in the vehicle or a high-voltage fault in the power supply equipment to be superstructured. During this process, it can also determine whether there is a high-voltage fault in the power supply equipment to be superstructured by whether a fault signal is received. If so, the BBM low-voltage power supply is disconnected, the superstructure function is forced to stop, and then the following can be executed. Figure 3 The PMS sends an enable invalid signal to the HCM; otherwise, the vehicle instrument panel will display a power prompt after receiving the corresponding function enable successful signal.

[0103] It should be understood that the above-mentioned level three faults can be faults that require immediate repair and troubleshooting for new energy vehicles, and this embodiment does not limit the specific faults.

[0104] In its implementation, the PMS can continuously monitor whether the vehicle has a level 3 fault or receives a fault signal while the power supply equipment to be installed is performing its functions. If so, it can immediately stop the low-voltage power supply to the BBM, force the BBM's installation function to stop, and disconnect the high-voltage contactor, thereby further improving safety and facilitating subsequent maintenance based on fault records.

[0105] It is important to emphasize that, in order to allow users to view the real-time operation of the superstructure on the vehicle's instrument panel, this embodiment also adapts the existing 360-degree panoramic camera of the new energy vehicle, recalibrating it according to the specific model to ensure that the camera image can be displayed on the vehicle's control panel and evenly distributed. Figure 2 As shown, the low-voltage section may also include a panoramic imaging module. Figure 2 AVM (Area Virtual Machine) can be connected to IC, MMI, and GW respectively, such as Figure 6 As shown, the corresponding display process can be as follows: the MMI sends a corresponding work request signal to the AVM; the AVM, upon receiving the corresponding work request signal, opens the panoramic image, and the vehicle's instrument panel displays the image on a split screen. Then, it can determine whether a signal indicating successful function activation has been received. Simultaneously, when the upper structure is powered on or off, such as... Figure 3 As shown, when the MMI determines that the power soft switch is pressed again, the switch of the upper-mount control APP is reset, the panoramic image of the vehicle instrument panel exits, and then the upper-mount power supply shutdown signal can be sent.

[0106] In practice, AVM can be used to allow users to view the working status of the superstructure from the cab while it is performing its functions, thus improving the user experience.

[0107] In this embodiment, the PMS can provide low-voltage power to the BBM upon receiving a power-on signal to enable the BBM to perform self-checks. If a high-voltage fault occurs, a fault signal is fed back to the PMS. If the PMS does not receive a fault signal or detect any fault in the vehicle, it can close the pre-charge contactor for pre-charging. Upon completion of pre-charging, it closes the high-voltage contactor to complete the power supply to the superstructure. This allows for fault detection before powering on the superstructure. Furthermore, the PMS can continuously monitor the vehicle for level 3 faults or receive fault signals during the execution of functions by the superstructure power supply equipment. If any are found, it can immediately stop providing low-voltage power to the BBM, forcing the superstructure function to stop and disconnecting the high-voltage contactor, further enhancing safety. This embodiment also allows the AVM to monitor the superstructure's operating status from the driver's cab during superstructure function execution, improving the user experience.

[0108] Reference Figure 7 , Figure 7 This is a structural block diagram of the first embodiment of the power supply control system for new energy vehicles according to the present invention.

[0109] like Figure 7 As shown in the embodiment of the present invention, the power supply control system for new energy vehicles includes: a power domain controller;

[0110] The power domain controller is connected to the power supply equipment to be installed and the high-voltage contactor, respectively. The high-voltage contactor is connected to the power supply and the power supply equipment to be installed, respectively.

[0111] The power domain controller is used to detect the current functional status of the power supply equipment to be installed when a power-down signal is detected.

[0112] The power domain controller is also used to disconnect the high-voltage contactor between the power supply equipment to be installed and the power supply to complete the power supply disconnection when the current function state is the function off state.

[0113] In this embodiment, when the user does not disable the BBM's upper-body function but directly sets the key to OFF, the PMS can directly disconnect the low-voltage power supply to the BBM, forcibly stopping the BBM's upper-body function, and then disconnect the high-voltage contactor, thereby preventing the high-voltage contactor from sticking and improving safety. At the same time, when the PMS does not receive the upper-body power supply shutdown signal but directly sets the key to OFF, it can start timing when the key is OFF or the power soft switch is pressed again to determine whether the upper-body power supply shutdown signal is received within a preset time. If not, the low-voltage power supply to the BBM can be disconnected, forcibly stopping the upper-body function.

[0114] As one implementation, the power domain controller is also used to detect whether a function shutdown success signal is received from the upper-mount controller of the power supply equipment to be installed when a power-down signal is detected;

[0115] The power domain controller is further configured to recognize the current function state as a function-off state when it receives the function-off success signal.

[0116] Reference Figure 8 , Figure 8 This is a structural block diagram of the second embodiment of the power supply control system for new energy vehicles of the present invention, as shown below. Figure 8 As shown, based on the first embodiment of the new energy vehicle upper power supply control system of the present invention, a second embodiment of the new energy vehicle upper power supply control system of the present invention is proposed.

[0117] In this embodiment, the power supply equipment to be installed includes: an upper-mount controller and a load;

[0118] The load is connected to the high-voltage contactor and the superstructure controller, respectively, and the superstructure controller is connected to the power domain controller.

[0119] The power domain controller is also used to stop low-voltage power supply to the superstructure controller when no successful function shutdown signal is received; and to disconnect the high-voltage contactor between the superstructure power supply and the load connected to the superstructure controller to complete the superstructure power-off.

[0120] In one implementation, the power domain controller is also used to detect whether a power supply shutdown signal for the upper device is received within a preset time period; if so, the operation of detecting whether a function shutdown success signal sent by the upper device controller of the device to be powered is received is executed; if not, the operation of stopping the low-voltage power supply to the upper device controller is executed.

[0121] Based on the above embodiments of the power supply control system for new energy vehicles, a third embodiment of the power supply control system for new energy vehicles is proposed.

[0122] In this embodiment, the power domain controller is also used to detect whether there is a fault in the whole vehicle and the superstructure power supply equipment when a power-on signal is received; if not, the high-voltage contactor between the superstructure power supply equipment to be superstructured and the superstructure power supply is closed to complete the superstructure power supply.

[0123] In one implementation, the power domain controller is also used to provide low-voltage power to the superstructure controller of the superstructure power supply equipment when a power-on signal is received, so that the superstructure controller can feed back a fault signal when a high-voltage fault occurs in the superstructure power supply equipment; detect whether the fault signal is received and detect whether there is a fault in the whole vehicle.

[0124] As one implementation, the power domain controller is also used to continuously detect whether the fault signal is received and to detect whether there is a fault in the vehicle; when the fault signal is received or the fault in the vehicle is detected, the controller stops low-voltage power supply to the superstructure controller and disconnects the high-voltage contactor between the superstructure power supply and the load connected to the superstructure controller to complete the power-off of the superstructure.

[0125] Other embodiments or specific implementations of the power supply control system for new energy vehicles of the present invention can be referred to the above-described method embodiments, and will not be repeated here.

[0126] Furthermore, this invention also proposes a new energy vehicle, which includes the power supply control system for new energy vehicles as described above.

[0127] Other embodiments or specific implementations of the new energy vehicle of the present invention can be referred to the above system embodiments, and will not be repeated here.

[0128] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0129] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0130] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory / random access memory, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0131] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A power supply control method for a new energy vehicle, characterized in that, The method is applied to the power domain controller of the power supply system in new energy vehicles, and the method includes the following steps: When a power-down signal is detected, the current functional status of the power supply equipment to be installed is checked; When the current function state is the function off state, the high-voltage contactor between the power supply device to be installed and the power supply to be installed is disconnected to complete the power supply disconnection. The high-voltage contactor is used to control whether the power supply circuit between the PDU and the power supply device to be installed is connected. The step of detecting the current functional status of the power supply equipment to be installed when a power-down signal is detected includes: When a power-down signal is detected, it is checked whether a function shutdown success signal is received from the upper-mount controller of the power supply device to be installed. The function shutdown success signal is a signal sent when the current function state of the power supply device to be installed is the function shutdown state. Upon receiving the signal indicating that the function has been successfully disabled, the current function state is determined to be disabled. After the step of detecting the current functional status of the power supply equipment to be installed when a power-down signal is detected, the method further includes: If a successful function shutdown signal is not received, the low-voltage power supply to the upper device controller is stopped; the high-voltage contactor between the upper device power supply and the load connected to the upper device controller is disconnected to complete the power-off of the upper device. The successful function shutdown signal cannot be received if the user has not shut down the upper device function of the upper device controller but has set the key status to OFF. Before the step of detecting whether a function shutdown success signal has been received from the upper-mount controller of the power supply equipment to be installed, the method further includes: The system detects whether a power supply shutdown signal for the upper device is received within a preset time period. The power supply shutdown signal for the upper device cannot be received if the user does not press the power soft switch again through the multimedia interaction system but sets the key status to OFF. If so, then execute the step of detecting whether a function shutdown success signal has been received from the upper-mount controller of the power supply equipment to be installed; If not, then proceed with the step of stopping the low-voltage power supply to the superstructure controller.

2. The power supply control method for new energy vehicle upper structure as described in claim 1, characterized in that, Before the step of detecting the current functional status of the power supply equipment to be installed when a power-down signal is detected, the method further includes: Upon receiving a power-on signal, check for faults in the entire vehicle and the power supply equipment to be installed; If not, then close the high-voltage contactor between the power supply equipment to be installed and the power supply to complete the power supply to the installation.

3. The power supply control method for new energy vehicle as described in claim 2, characterized in that, The step of detecting whether there is a fault in the whole vehicle and the power supply equipment to be installed when a power-on signal is received includes: Upon receiving a power-on signal, the upper-mount controller of the power supply equipment to be installed is powered on at low voltage, so that the upper-mount controller can feed back a fault signal when the power supply equipment to be installed experiences a high-voltage fault. It detects whether the fault signal is received and whether there is a fault in the whole vehicle.

4. The power supply control method for new energy vehicle as described in claim 3, characterized in that, After the step of closing the high-voltage contactor between the power supply equipment to be installed and the power supply, the method further includes: Continuously monitor whether the fault signal is received and detect whether there is a fault in the vehicle; Upon receiving the fault signal or detecting a fault in the vehicle, the low-voltage power supply to the superstructure controller is stopped, and the high-voltage contactor between the superstructure power supply and the load connected to the superstructure controller is disconnected to complete the power-off of the superstructure.

5. A power supply system for a new energy vehicle, characterized in that, The system includes: a power domain controller; The power domain controller is connected to the power supply equipment to be installed and the high-voltage contactor, respectively. The high-voltage contactor is connected to the power supply and the power supply equipment to be installed, respectively. The power domain controller is used to detect the current functional status of the power supply equipment to be installed when a power-down signal is detected. The power domain controller is also used to disconnect the high-voltage contactor between the power supply device to be installed and the power supply to complete the power supply disconnection when the current function state is the function off state. The high-voltage contactor is used to control whether the power supply circuit between the PDU and the power supply device to be installed is connected. The power domain controller is also used to detect whether it receives a function shutdown success signal sent by the upper device controller of the power supply device to be installed when a power-down signal is detected. The function shutdown success signal is a signal sent when the current function state of the power supply device to be installed is the function shutdown state. The power domain controller is also configured to determine that the current function state is a function-off state when it receives the function-off success signal; The power domain controller is also used to stop low-voltage power supply to the superstructure controller when no function shutdown success signal is received; disconnect the high-voltage contactor between the superstructure power supply and the load connected to the superstructure controller to complete the superstructure power off; the function shutdown success signal cannot be received when the user has not shut down the superstructure function of the superstructure controller but has set the key status to OFF. The power domain controller is also used to detect whether a power supply shutdown signal for the upper device is received within a preset time period. The power supply shutdown signal for the upper device cannot be received if the user does not press the power soft switch again through the multimedia interaction system but sets the key state to OFF. If yes, the step of detecting whether a function shutdown success signal sent by the upper device controller of the device to be powered is received is executed. If no, the step of stopping the low-voltage power supply to the upper device controller is executed.

6. A new energy vehicle, characterized in that, The new energy vehicle includes the power supply system for new energy vehicles as described in claim 5.

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