A method and system for realizing power-on / off and READY of an oil-to-electricity converted vehicle

Abstract

The present invention discloses a method and system for realizing power-on / off and READY of a converted fuel vehicle to an electric vehicle. The steps of the method include: the body control unit obtains the power-on / off or READY signal of the vehicle; obtains the vehicle state and determines whether the vehicle state meets the set conditions; if the set conditions are met, the body control unit sends a corresponding power-on / off or READY request signal to the vehicle control unit according to the power-on / off or READY signal of the vehicle obtained in step S1; the vehicle control unit forwards the power-on / off or READY request signal received from the body control unit to the power chain network to complete the power-on / off or READY of the converted fuel vehicle to an electric vehicle. The present invention utilizes the original CAN bus messages on fuel vehicles, reduces the point-to-point physical connection method, reduces the vehicle cost, integrates the core components of fuel vehicles with the three-electric system, and realizes the functional safety of the vehicle under some special working conditions.

Description

Technical Field

[0001] The present invention belongs to the technical field of converting fuel vehicles into pure electric vehicles, and specifically relates to a method and system for realizing power on / off and READY of converted electric vehicles. Background Art

[0002] The electronic control units involved in the whole vehicle power on / off and vehicle ignition processes of traditional fuel vehicles include BSI (Body Control Unit), CMM (Engine Electronic Control Unit), BVA (Transmission Electronic Control Unit, etc.), AVE (Electronic Anti-theft Lock), LCE (Remote Key Reader), and BML (Remote Key Control Box). After conversion to an electric vehicle, there is no CMM and BVA, and several new electronic control units related to the three-electric systems are added, such as VCU (Vehicle Control Unit), BMU (Battery Management Controller), MCU (Motor Controller), OBC (Slow Charging Controller), DCDC (DC-DC Converter), and CHM (Thermal Management Controller). If only considering the three-electric system, connecting the ignition switch and the vehicle control unit VCU in a simple physical connection manner and controlling the strategy through the VCU software can meet the requirements of the whole vehicle power on / off and READY as well as driving functions under certain working conditions. However, this connection method does not consider the vehicle READY conditions in many special working conditions of the whole vehicle. For example, when the vehicle is powered on and the car key is accidentally placed outside the vehicle at a certain position, the vehicle can still be READY and can drive, thus bringing potential safety hazards to the customer's property; or the vehicle can also achieve the READY function in the showroom mode, resulting in potential safety risks for personnel; or when the vehicle is driving, in case of faults such as abnormal braking or stuck accelerator, the function of forcibly losing the vehicle power by long pressing the ignition switch cannot be achieved, etc. Summary of the Invention

[0003] In order to avoid the potential safety risks caused by incorrect READY of the vehicle in the above special working conditions, a new control method is needed to integrate the key components BSI, AVE, BML, and LCE in the low-voltage part of the fuel vehicle with the newly added electronic control units VCU / BMS / MCU / OBC / DCDC in the electric vehicle to ensure that the power on / off and READY logic of the whole vehicle is reasonable and the function is safe in all working conditions of the whole vehicle. Therefore, the present invention proposes a control method and system for realizing power on / off and READY of converted electric vehicles.

[0004] The method for realizing power on / off and READY of a converted electric vehicle to achieve one of the purposes of the present invention includes the following steps:

[0005] S1. The body control unit obtains the power on / off or READY signal of the vehicle;

[0006] S2. Obtain the vehicle status and determine whether the vehicle status meets the set conditions; if it meets the set conditions, the body control unit sends a corresponding power-on or READY request signal to the vehicle control unit according to the power-on / off or READY signal of the vehicle obtained in step S1;

[0007] S3. The vehicle control unit forwards the power-on / off or READY request signal received from the body control unit to the power chain network to complete the power-on / off or READY of the fuel-to-electric vehicle.

[0008] Further, the method for obtaining the power-on / off or READY signal of the vehicle is as follows:

[0009] 1. Briefly press the START / STOP switch to power on the vehicle. At this time, the BSI receives a pulse signal of a set voltage V1 with a duration of t1 through a hard wire. This signal is the trigger signal for realizing the vehicle power-on LV_ON;

[0010] 2. Long press the START / STOP switch. At this time, the BSI receives a pulse signal of a set voltage V2 with a duration of t2 through a hard wire. This signal is the trigger signal for realizing the vehicle READY;

[0011] 3. Briefly press the START / STOP switch. At this time, the BSI receives a voltage pulse signal of a set voltage V3 through a hard wire. This signal is the trigger signal for realizing the vehicle power-off KEY OFF.

[0012] Further, when the body control unit obtains the vehicle power-on signal in step S1, the method includes the following steps:

[0013] S101. Obtain the vehicle status, where the vehicle status includes: the initial vehicle status; the position of the remote control key; the key anti-theft code; the communication status of the electronic anti-theft lock, remote control key reader, and remote control key control box;

[0014] S102. When the initial vehicle status is the power-off state; the remote control key is inside the vehicle; the key anti-theft code is correct; and the communication of the electronic anti-theft lock, remote control key reader, and remote control key control box is normal:

[0015] The body control unit sends a vehicle power-on request signal to the vehicle control unit through the CAN IS network;

[0016] The body control unit wakes up the vehicle control unit through a hard wire or a wake-up message;

[0017] The vehicle control unit wakes up all the electronic control units on the power chain through a hard wire wake-up signal;

[0018] The vehicle control unit sends a low-voltage request for the vehicle on the power chain network through the EV_CAN bus;

[0019] S103. The electronic control unit on the power train sends the current working mode to the vehicle control unit on the EV_CAN network; the electronic control unit on the power train includes a battery management controller, a vehicle control unit, a slow charge controller, a DC-DC controller, and a thermal management controller;

[0020] S104. The vehicle control unit judges the working mode of the received electronic control unit. When the working modes are all Standby, the vehicle control unit outputs the working mode of the power train as the vehicle power-on mode to realize vehicle power-on.

[0021] Further, when the body control unit obtains the READY signal of the vehicle in step S1, the method includes the following steps:

[0022] Obtain the vehicle initialization state, vehicle gear position, vehicle brake pedal state, vehicle start protection signal state, and vehicle start authorization state;

[0023] When the vehicle initialization state is the power-on state, the vehicle gear position is in the set gear position, the vehicle brake pedal is depressed, the vehicle start protection signal is not activated, and the vehicle start authorization state is enabled:

[0024] The body control unit sends a vehicle start request signal to the vehicle control unit through the CAN IS network;

[0025] The vehicle control unit sends a vehicle READY request on the power train network through the EV_CAN bus;

[0026] The electronic control unit on the power train sends the current working mode to the vehicle control unit on the EV_CAN network; the electronic control unit includes a battery management controller, a vehicle control unit, a slow charge controller, a DC-DC controller, and a thermal management controller;

[0027] The vehicle control unit judges the working mode of the received electronic control unit. When the working modes are all READY, the vehicle control unit outputs the working mode of the power train as the vehicle READY mode to realize vehicle READY.

[0028] Further, the method for judging whether the vehicle brake signal meets the conditions includes:

[0029] S1021. The vehicle control unit obtains the gear position signal of the shift knob controller from the EV_CAN network;

[0030] S1022. When the gear position information is in the P or N gear, the condition for vehicle READY is met

[0031] Further, the method for judging whether the vehicle start authorization state meets the conditions includes:

[0032] Obtain the fault level and working mode of the electronic control units on the power train from EV_CAN;

[0033] If the fault level of the electronic control units on the power train is lower than the set level and the working modes are all StandBy mode, the vehicle control unit sends an authorization start signal to the body control unit on the CAN IS network;

[0034] Otherwise, the vehicle control unit sends an authorization prohibition signal to the body control unit on the CAN IS network.

[0035] Furthermore, the method for judging whether the vehicle start protection meets the conditions includes:

[0036] The vehicle control unit obtains the fault level and working mode of the electronic control units on the vehicle power train;

[0037] When the fault levels of the electronic control units on the vehicle power train are all lower than the set level and the working modes are all StandBy, the vehicle control unit simulates the engine electronic control unit on the CAN IS network to send a signal indicating that the start protection is not activated to the body controller, and the body controller sends a request for authorizing the vehicle to be Ready on the CAN IS network.

[0038] Furthermore, when the body control unit obtains the power-off signal of the vehicle in step S1, the method includes the following steps:

[0039] S101. Obtain the vehicle initialization state, the location of the remote control key, and the vehicle speed;

[0040] S102. When the vehicle initialization state is Ready or the power-on state, the remote control key is in the vehicle, and the vehicle speed is greater than the set speed value:

[0041] The vehicle control unit sends a vehicle power-off request on the power train network through the EV_CAN bus;

[0042] S103. The battery management controller, vehicle control unit, slow charging controller, DC-DC controller, and thermal management controller on the power train respond to the vehicle control unit's power-off request on the EV_CAN network and send the current working mode to the vehicle control unit;

[0043] S104. The vehicle control unit judges the working modes of the received electronic control units. When the working modes are all Initial, the vehicle control unit outputs the working mode of the power train as the vehicle power-off mode to realize vehicle power-off.

[0044] The system for realizing power-on / off and READY of the converted gasoline-electric vehicle to achieve the second object of the present invention includes a vehicle signal acquisition module, a vehicle state judgment module, and a vehicle request module;

[0045] The vehicle signal acquisition module is used to acquire the power-on / off or READY signal of the vehicle;

[0046] The vehicle state judgment module is used to acquire the vehicle state and judge whether the vehicle state meets the set conditions; if the set conditions are met, the body control unit sends a corresponding power-on / off or READY request signal to the vehicle control unit according to the power-on / off or READY signal of the vehicle acquired in step S1;

[0047] The vehicle request module is used to forward the power-on / off or READY request signal received from the body control unit to the power chain network to complete the power-on / off or READY of the fuel-to-electric vehicle. Beneficial effects

[0048] 1. Utilize the original CAN bus messages on fuel vehicles, reduce the point-to-point physical connection method, and lower the vehicle cost;

[0049] 2. Integrate the core components of fuel vehicles with the three-electric system to achieve the functional safety of the vehicle under some special working conditions. For example, when the vehicle is in the LV_ON state and the driver accidentally leaves the car key outside the vehicle, the VCU cannot enable the vehicle to achieve the READY function to ensure the safety of the driver and vehicle property; another example is that in the exhibition hall mode, the vehicle can only be powered on but not READY, ensuring the safety of the vehicle and vehicle users; further, when the vehicle's brakes and accelerator are stuck, the vehicle can cut off the high voltage by long pressing the start / stop button to ensure the personal safety of the driver. Brief description of the drawings

[0050] Figure 1 It is a schematic diagram of the physical connection framework of the method described in the present invention;

[0051] Figure 2 It is a schematic diagram of the process of realizing LV_ON for vehicle power-on;

[0052] Figure 3 It is a schematic diagram of the process of realizing READY for the vehicle;

[0053] Figure 4 It is a schematic diagram of the process of realizing KEY OFF;

[0054] Figure 5 Block diagram of the vehicle signal acquisition, judgment, and request modules. Specific implementation manners

[0055] The following specific embodiments are used to explain the technical solutions of the claims of the present invention so that those skilled in the art can understand the claims. The protection scope of the present invention is not limited to the following specific implementation structures. Those made by those skilled in the art that include the technical solutions of the claims of the present invention and are different from the following specific embodiments are also within the protection scope of the present invention.

[0056] First, the physical connection framework of the present invention will be described in combination with Figure 1 Among them, the ignition switch START / STOP is directly connected to the BSI by a hard wire; AVE / LCE / BML is connected to the vehicle BSI through the low-speed network CAN LS; the VCU is connected to the BSI through the high-speed network CAN IS, and there is also a hard wire wake-up signal BSI RCD between the BSI and the VCU; the VCU is connected to BMU / MCU / OBC / DCDC / CHM on the vehicle power chain through the high-speed network EV_CAN, and there is a hard wire wake-up signal VCU RCD for each electronic control unit on the VCU and BMU / MCU / OBC / DCDC / CHM.

[0057] Specifically, the Start / Stop switch sends a vehicle READY status request signal to the BSI in a hard-wired manner. This signal is a 12V pulse signal, and different 12V pulse times represent different request methods. When the 12V pulse signal duration is within 1S, it represents a short press of the START / STOP button; when the 12V pulse signal duration is about 2S, it represents a long press of the START / STOP button; when the 12V pulse signal duration is within 4S, it represents a long press of the START / STOP button when there is vehicle speed.

[0058] LCE / BML / AVE sends their respective current working states to the BSI through the CAN LS network bus. When the working states of LCE / BML / AVE are good and the vehicle anti-theft information is normal, the vehicle power-on requirement is met. If the START / STOP button is short-pressed at this time, the BSI will send the vehicle's current life phase signal ETAT_PRINCIP_SEV = 0X1 (Contact, that is, the power-on request) to the VCU on the CAN IS network. This vehicle life phase signal has three values. When ETAT_PRINCIP_SEV = 0X0 (off), it represents a vehicle power-off request; when ETAT_PRINCIP_SEV = 0X1 (contact), it represents a vehicle low-voltage power-on request; when ETAT_PRINCIP_SEV = 0X2 (DEM), it represents a vehicle start request. Then the VCU interacts with BMU / MCU / OBC / DCDC / CHM through the unique EV_CAN network of the three-electric system to realize the vehicle low-voltage power-on request and the vehicle low-voltage control method.

[0059] However, the realization of the vehicle's READY state is different from the way of powering on the low-voltage system. Because the BSI also needs to judge the current vehicle gear information, monitor the vehicle authorization start signal and the vehicle start protection signal. And these signals all need to be judged and processed by the VCU and then fed back to the BSI. Only when these signals sent by the VCU to the BSI are all correct, the BSI will send the vehicle life phase signal ETAT_PRINCIP_SEV = 0X2 (DEM) to the VCU on the CAN IS network. Then the VCU realizes the READY request on the vehicle and the control method of realizing the vehicle READY through the unique EV_CAN network of the three-electric system to interact with the BMU / MCU / OBC / DCDC / CHM.

[0060] Similarly, when the vehicle has a power-off request, the BSI will judge whether the vehicle meets the power-off conditions in combination with the current vehicle state. If it meets the conditions, the BSI will send the vehicle life phase ETAT_PRINCIP_SEV = 0X0 (off) to the VCU on the CAN IS network. Then the VCU realizes the low-voltage request on the vehicle and the control method of realizing the vehicle low-voltage through the unique EV_CAN network of the three-electric system to interact with the BMU / MCU / OBC / DCDC / CHM.

[0061] The following describes the embodiments of the method of the present invention in combination with the working processes of three working conditions, namely vehicle power-on (LV_ON), READY, and power-off (LV_OFF). Embodiment

[0062] S1. The vehicle maintains the initial state of KEY OFF, that is, the vehicle is in the power-off state;

[0063] S2. Briefly press the START / STOP switch to power on the vehicle. At this time, the BSI receives a 12V voltage pulse signal within 1s through the hard wire. This signal is the trigger signal for realizing the vehicle power-on LV_ON;

[0064] S3. The BSI judges whether the vehicle state is normal, including: whether the remote control key is in the vehicle; whether the key anti-theft code is correct; whether the communications of AVE, LCE, and BML are normal;

[0065] S4. If any of the above conditions is not met, return to step S1. Otherwise, jump to the next step;

[0066] S5. The BSI sends a power-on request signal to the VCU via the CAN IS network. The power-on request signal is the vehicle life phase signal ETAT_PRINCIP_SEV = 0X1, and 0X1 means Contact. At the same time, the BSI wakes up the VCU via the BSI RCD hardwired wake-up signal and the CAN wake-up message on the CAN IS network to achieve the purpose of waking up the VCU. There are two output forms of the BSI RCD hardwired wake-up signal. One is partial wake-up. When the vehicle is powered off, the vehicle is woken up by opening the driver's door, etc., and the BSIRCD outputs a 12V power supply for 1s. When the vehicle achieves LV_ON, the wake-up at this time is the main wake-up. At this time, the BSI RCD outputs a continuous 12V power supply until the vehicle is powered off. The principle of the VCU RCD later is the same as that of the BSI, so it will not be elaborated here.

[0067] S6. After the VCU wakes up all the electronic control units on the power train via the VCU RCD hardwired wake-up signal, it then sends a request for the vehicle to be powered off, VCM_PWT_Request = LV_0N, on the power train network via the EV_CAN bus.

[0068] S7. The BMU / MCU / OBC / DCDC / CHM on the power train send their current working modes to the VCU on the EV_CAN network. When the VCU receives that the working modes fed back by the BMU / MCU / OBC / DCDC / CHM electronic control units are all StandBy, the VCU outputs the working mode of the power train as VCM_PWT_Workmode = LV_0N, that is, the goal of the vehicle being powered on to LV_ON is achieved. The working modes are all StandBy, that is, OBC_Workmode = StandBy, DCDC_Workmode = StandBy, MCU_Workmode = StandBy, CHM_Workmode = StandBy. Embodiment

[0069] S1. The whole vehicle maintains the initial state of LV_ON, that is, the vehicle is in the powered-on state.

[0070] S2. Long press the START / STOP switch. At this time, the BSI receives a continuous 12V (about 2S) voltage pulse signal via the hardwired method. This signal is the trigger signal to achieve the vehicle READY.

[0071] S3. The BSI judges the vehicle state, such as whether the remote control key is in the vehicle; whether the vehicle gear is in N gear or P gear; whether the brake pedal is depressed; whether the vehicle start protection signal is activated and whether the vehicle has started the authorized state.

[0072] S4. If any of the conditions described in S3 is not met, return to step S1; otherwise, go to the next step.

[0073] S5. The BSI sends a vehicle start request to the VCU via the CAN IS network, and the vehicle start request is the vehicle life phase signal ETAT_PRINCIP_SEV = 0X2 (DEM).

[0074] S6. The VCU then sends a vehicle READY request VCM_PWT_Request = READY on the power train network via the EV_CAN bus.

[0075] S7. The BMU / MCU / OBC / DCDC / CHM on the power train sends the current working mode to the VCU on the EV_CAN network. When the VCU receives the working modes feedback from the electronic control units such as BMU / MCU / OBC / DCDC / CHM all being READY, the VCU outputs the working mode of the power train as VCM_PWT_Workmode = READY, that is, the vehicle READY target is achieved; all the working modes being READY means OBC_Workmode = READY, DCDC_Workmode = Ready, MCU_Workmode = Ready, CHM_Workmode = Ready.

[0076] Specifically, in the above step S3, the method for the BSI to judge whether the vehicle gear signal is in the P gear or N gear includes:

[0077] Since the BV (transmission electronic control unit) and CMM (engine electronic control unit) are cancelled on fuel vehicles, the VCU needs to forward the current vehicle gear information to the BSI after receiving the gear signal from the EGS shift knob controller. That is, when the VCU receives the gear signal of P or N from the EGS on the EV_CAN network, the VCU then forwards the P or N gear signal to the BSI on the CAN IS network.

[0078] Specifically, in the above step S3, the method for the BSI to judge whether the vehicle is in the start authorization state includes:

[0079] The VCU obtains the fault levels and working modes of the electronic control units on the power train from the EV_CAN. When the fault level of the electronic control unit on the power train received by the VCU is not level 3, and at the same time the working modes of the power train received by the VCU are all standby, the VCU sends an authorization start signal on the CAN IS network to enable authorization ETAT_AUTORISATION_DEM = 1 (authorized) to the BSI, and the BSI then executes the vehicle READY request. Otherwise, the VCU will send a start authorization prohibition signal ETAT_AUTORISATION_DEM = 0X2 (prohibited) to the BSI on the CAN IS network. At this time, the BSI will not execute the vehicle READY request.

[0080] The above fault levels are divided into three levels according to the severity level: level 3 is the highest level, level 2 is the medium level, and level 1 is the lowest level. Different fault levels correspond to different failure modes of the whole vehicle.

[0081] Specifically, in the above step S3, the method for judging whether the vehicle start protection is activated includes:

[0082] The PRCTECTION_DEMA signal has two values: when the value is 0, it means that the start protection is not activated; when the value is 1, it means that the start protection is activated.

[0083] The vehicle start protection signal is used by the fuel vehicle CMM. When the BSI receives the signal that the vehicle start protection is not activated, the BSI will execute the vehicle start request. Similarly, at this time, it is necessary for the VCU to judge that the fault level of the electronic control unit on the vehicle power train is lower than level 3 and the working modes of the power train electronic control units are all standby. The VCU simulates the CMM on the CAN IS network and sends a signal that the start protection is not activated (PRCTECTION_DEMA = 0X0 (not activated)) to the BSI, and the BSI sends a request for authorizing the vehicle to be Ready on the CAN IS network again.

[0084] Specifically, in the above step S3, the method for the BSI to judge whether the vehicle brake pedal is depressed includes:

[0085] The brake switch has two switch signals, one directly connected to the BSI and the other directly connected to the VCU.

[0086] When the VCU receives a high-level 12V (brake pedal depressed) voltage signal sent by the brake switch, and at the same time the VCU receives a CAN signal contant_frein1 = 1 (depressed) indicating that the brake pedal is depressed sent by the BSI on the CANIS network, the VCU will feedback a CAN message signal contant_frein2 = 1 (depressed) indicating that the brake pedal is depressed to the BSI on the CANIS network.

[0087] Similarly, BSI will judge the hard-wired signal high-level 12V voltage signal from the brake switch. That is, when BSI receives the CAN message signal contant_frein2 = 1 (pressed) sent by VCU and BSI receives the hard-wired high-level 12V voltage signal of the brake switch, then BSI judges that the brake pedal is pressed, otherwise the brake pedal is not pressed.

[0088] Specifically, in the above step S5, if all the conditions described in S3 are satisfied, then BSI sends the vehicle life phase signal ETAT_PRINCIP_SEV = 0X2 (DEM) to VCU through the CAN IS network. However, the vehicle start request will not last forever. That is, when the time of ETAT_PRINCIP_SEV = 0X2 will last for 3s, and after 3s, the signal value jumps to 0X1 (contact). When the signal value jumps from 2 to 1, at this time, the vehicle authorization start signal ETAT_AUTORISATION_DEM sent by VCU also correspondingly jumps to 2, that is, it is prohibited to authorize vehicle start again. Embodiment

[0089] S1. The whole vehicle initialization state is READY or only LV_ON.

[0090] S2. Short press the START / STOP switch. At this time, BSI receives a 12V voltage pulse signal through the hard wire, and this signal is the trigger signal for realizing vehicle KEY OFF.

[0091] S3. When there is vehicle speed, long press the START / STOP signal. At this time, BSI receives a 12V voltage pulse signal with a duration of about 4S through the hard wire, and this signal is the trigger signal for realizing vehicle KEY OFF.

[0092] S4. Judge the vehicle state.

[0093] When the input signals of BSI "key is in the vehicle", "vehicle speed signal is greater than 5km / h", "12V voltage pulse voltage signal from the start / stop switch for 4S", then at this time BSI outputs and sends the vehicle life phase signal ETAT_PRINCIP_SEV = 0X0 (off) on the CAN IS network to request power-off to VCU.

[0094] Similarly, when the input signals of BSI "key is in the vehicle", "vehicle speed signal is less than 5km / h", "12V voltage pulse voltage signal from the start / stop switch for 1S", then at this time BSI outputs and sends the vehicle life phase signal ETAT_PRINCIP_SEV = 0X0 (off) on the CAN IS network to request power-off to VCU.

[0095] S5. The VCU sends a vehicle power-off request VCM_PWT_Request = LV_OFF on the powertrain network via the EV_CAN bus. At the same time, the VCU RCD hardwired wake-up signal is no longer valid.

[0096] S6. On the powertrain, BMU / MCU / OBC / DCDC / CHM respond to the VCU power-off request on the EV_CAN network and feedback their current working modes to the VCU. When the VCU receives the feedback that the working modes of the electronic control units such as BMU / MCU / OBC / DCDC / CHM change from Standby to Initial, i.e., OBC_Workmode = Standby - Initial, DCDC_Workmode = Standby - Initial, MCU_Workmode = Standby - Initial, CHM_Workmode = Standby - Initial, the VCU outputs the working mode of the powertrain VCM_PWT_Workmode = LV_OFF to the power-off mode, i.e., the vehicle power-off target is achieved.

[0097] Specifically, in the above step S4, if the vehicle is in the READY state and the vehicle speed is less than 3 km / h at this time, when the BSI cannot detect the key in the vehicle, it is also necessary to long-press the START / STOP button for 4 seconds to achieve the purpose of LV_OFF.

[0098] Specifically, in the above step S4, if the vehicle is in the READY state and the vehicle speed is greater than 5 km / h at this time, if emergency power-off is required, it is also necessary to long-press the START / STOP button for about 4 seconds to achieve the purpose of LV_OFF.

[0099] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0100] The embodiment of the present application also provides a system embodiment, including a vehicle signal acquisition module, a vehicle state judgment module, and a vehicle request module;

[0101] The vehicle signal acquisition module is used to acquire the power-on / off or READY signal of the vehicle;

[0102] The vehicle state judgment module is used to acquire the vehicle state and judge whether the vehicle state meets the set conditions; if the set conditions are met, the body control unit sends a corresponding request signal to the vehicle control unit according to the power-on / off or READY signal of the vehicle acquired by the vehicle signal acquisition module;

[0103] The whole vehicle request module is used to send corresponding whole vehicle requests on the power chain network according to the request signals received from the body control unit, and complete the power on / off or READY of the converted vehicle from gasoline to electric.

[0104] When the vehicle signal acquisition module acquires the power on signal of the vehicle, the vehicle state judgment module further includes a whole vehicle initial state acquisition module, a remote control key position acquisition module, a key anti-theft code verification module, and a communication state acquisition module;

[0105] The whole vehicle initial state acquisition module is used to acquire the initial state of the whole vehicle, and the initial state of the whole vehicle includes the power on state, the power off state, and the READY state;

[0106] The remote control key position acquisition module is used to acquire whether the remote control key of the vehicle is inside or outside the vehicle;

[0107] The key anti-theft code verification module is used to judge whether the key anti-theft code is correct;

[0108] The communication state acquisition module is used to acquire whether the communication states of the electronic anti-theft lock, the remote control key reader, and the remote control key control box are normal.

[0109] When the vehicle signal acquisition module acquires the READY signal of the vehicle, the vehicle state judgment module further includes a whole vehicle initial state acquisition module, a vehicle gear acquisition module, a vehicle brake pedal state acquisition module, a vehicle start protection signal state acquisition module, and a vehicle start authorization state acquisition module;

[0110] The whole vehicle initial state acquisition module is used to acquire the initial state of the whole vehicle, and the initial state of the whole vehicle includes the power on state, the power off state, and the READY state;

[0111] The vehicle gear acquisition module is used to acquire the current gear of the vehicle;

[0112] The vehicle brake pedal state acquisition module is used to acquire the stepping state of the vehicle brake pedal, and the stepping state includes the brake pedal being depressed and the brake pedal being released;

[0113] The vehicle start protection signal state acquisition module is used to acquire the vehicle start protection signal state; the vehicle start protection signal state includes vehicle start protection activation and vehicle start protection prohibition;

[0114] The vehicle start authorization state acquisition module is used to acquire the vehicle start authorization state of the vehicle; the vehicle start authorization state includes enabling vehicle start authorization and prohibiting vehicle start authorization.

[0115] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A method for implementing power-on / off and READY of an oil-to-electricity converted vehicle, characterized in that, It includes the following steps: S1. The body control unit obtains the power on / off or READY signal of the vehicle; S2. Obtain the vehicle status and determine whether the vehicle status meets the set conditions; if it meets the set conditions, the body control unit sends the corresponding power on / off or READY request signal to the vehicle control unit according to the power on / off or READY signal of the vehicle obtained in step S1; S3. The vehicle control unit forwards the power on / off or READY request signal received from the body control unit to the power chain network to complete the power on / off or READY of the converted vehicle from fuel to electric; When the body control unit obtains the READY signal of the vehicle in step S1, the method includes the following steps: Obtain the vehicle initialization status, vehicle gear position, vehicle brake pedal status, vehicle start protection signal status, and vehicle start authorization status; When the vehicle initialization status is the power-on state, the vehicle gear is in the set gear position, the vehicle brake pedal is depressed, the vehicle start protection signal is not activated, and the vehicle start authorization status is enabled: The body control unit sends a vehicle start request signal to the vehicle control unit through the CAN IS network; The vehicle control unit sends a vehicle-wide READY request on the power chain network through the EV_CAN bus; The electronic control unit on the power chain sends the current working mode to the vehicle control unit on the EV_CAN network; The vehicle control unit judges the working mode of the received electronic control unit. When the working modes are all READY, the vehicle control unit outputs the working mode of the power chain as the vehicle-wide READY mode to achieve vehicle-wide READY; The method for the BSI to judge whether the vehicle brake pedal is depressed includes: The brake switch has two switch signals, one directly connected to the BSI and the other directly connected to the VCU; When the VCU receives the voltage signal of the depressed brake pedal sent by the brake switch and at the same time receives the CAN signal of the depressed brake pedal sent by the BSI on the CAN IS network, the VCU feeds back the CAN message signal of the depressed brake pedal to the BSI on the CAN IS network; When the BSI receives the CAN message signal of the depressed brake pedal sent by the VCU and the voltage signal of the depressed brake pedal sent by the brake switch, the BSI judges that the brake pedal is depressed, otherwise the brake pedal is not depressed.

2. The method for implementing power on / off and READY of the converted electric vehicle according to claim 1, characterized in that, When the body control unit obtains the power-on signal of the vehicle in step S1, the method includes the following steps: S101. Obtain the vehicle status, and the vehicle status includes: vehicle initialization status; position of the remote control key; key anti-theft code; communication status of the electronic anti-theft lock, remote control key reader, and remote control key control box; S102. When the vehicle initialization status is the power-off state; the remote control key is in the vehicle; the key anti-theft code is correct; the communication of the electronic anti-theft lock, remote control key reader, and remote control key control box is normal: The body control unit sends a vehicle power-on request signal to the vehicle control unit through the CAN IS network; The body control unit wakes up the vehicle control unit through a hard wire or a wake-up message; The vehicle control unit wakes up all the electronic control units on the power chain through a hard wire wake-up signal; The vehicle control unit sends a vehicle-wide low-voltage request on the power chain network through the EV_CAN bus; S103. The electronic control unit on the power train sends the current working mode to the vehicle control unit on the EV_CAN network; S104. The vehicle control unit judges the working mode of the received electronic control unit. When the working modes are all StandBy, the vehicle control unit outputs the working mode of the power train as the vehicle power-on mode to realize vehicle power-on.

3. The method for realizing power on / off and READY of the converted electric vehicle according to claim 2, characterized in that, The method for judging whether the vehicle brake signal meets the conditions includes: S1021. The vehicle control unit obtains the gear signal of the shift knob controller from the EV_CAN network; S1022. When the gear information is in P or N gear, the condition for the vehicle to be READY is met.

4. The method for realizing power-on / off and READY of the converted electric vehicle according to claim 2, characterized in that, The method for judging whether the vehicle start authorization status meets the conditions includes: Obtain the fault level and working mode of the electronic control unit on the power train from the EV_CAN; If the fault level of the electronic control unit on the power train is lower than the set level and the working modes are all StandBy mode, the vehicle control unit sends an authorization start signal to the body control unit on the CAN IS network; Otherwise, the vehicle control unit sends an authorization prohibition signal to the body control unit on the CAN IS network.

5. The method for realizing power on / off and READY of the converted electric vehicle according to claim 2, wherein The method for judging whether the vehicle start protection meets the conditions includes: The vehicle control unit obtains the fault level and working mode of the electronic control unit on the vehicle power train; When the fault levels of the electronic control units on the vehicle power train are all lower than the set level and the working modes are all StandBy, the vehicle control unit simulates the engine electronic control unit on the CAN IS network to send a signal indicating that the start protection is not activated to the body controller, and the body controller sends a request for authorizing the vehicle to be Ready on the CAN IS network.

6. The method for implementing power-on / off and READY of the converted electric vehicle according to claim 1, characterized in that, When the body control unit obtains the vehicle power-off signal in step S1, the method includes the following steps: S101. Obtain the vehicle initialization state, the position of the remote control key, and the vehicle speed; S102. When the vehicle initialization state is Ready or power-on state, and the remote control key is inside the vehicle, and the vehicle speed is greater than the set speed value: The vehicle control unit sends a vehicle power-off request on the power train network through the EV_CAN bus; S103. The battery management controller, vehicle control unit, slow charge controller, DC-DC controller, and thermal management controller on the power train respond to the vehicle control unit power-off request on the EV_CAN network and send the current working mode to the vehicle control unit; S104. The vehicle control unit judges the working mode of the received electronic control unit. When the working modes are all Initial, the vehicle control unit outputs the working mode of the power train as the vehicle power-off mode to realize vehicle power-off.

7. An implementation system for power-on / off and READY of a converted gasoline vehicle to electric vehicle using the implementation method for power-on / off and READY of the converted gasoline vehicle to electric vehicle according to claim 1, characterized in that It includes a vehicle signal acquisition module, a vehicle state judgment module, and a vehicle request module; The vehicle signal acquisition module is used to acquire the vehicle power-on / off or READY signal; The vehicle state judgment module is used to acquire the vehicle state and judge whether the vehicle state meets the set conditions; if it meets the set conditions, the body control unit sends a corresponding request signal to the vehicle control unit according to the vehicle power-on / off or READY signal acquired by the vehicle signal acquisition module; The vehicle request module is used to send corresponding vehicle requests on the powertrain network according to the request signals received from the body control unit, and complete the power-on and power-off or READY of the fuel-to-electric vehicle conversion.

8. The power-on / off and READY implementation system for fuel-to-electric vehicle according to claim 7, wherein When the vehicle signal acquisition module acquires the power-on signal of the vehicle, the vehicle state judgment module further includes a vehicle initial state acquisition module, a remote control key position acquisition module, a key anti-theft code verification module, and a communication state acquisition module; The vehicle initial state acquisition module is used to acquire the initial state of the vehicle, and the initial state of the vehicle includes the power-on state, the power-off state, and the READY state; The remote control key position acquisition module is used to acquire whether the remote control key of the vehicle is inside or outside the vehicle; The key anti-theft code verification module is used to judge whether the key anti-theft code is correct; The communication state acquisition module is used to acquire whether the communication states of the electronic anti-theft lock, the remote control key reader, and the remote control key control box are normal.

9. The system for realizing power-on / off and READY of the converted electric vehicle according to claim 7, wherein When the vehicle signal acquisition module acquires the READY signal of the vehicle, the vehicle state judgment module further includes a vehicle initial state acquisition module, a vehicle gear acquisition module, a vehicle brake pedal state acquisition module, a vehicle start protection signal state acquisition module, and a vehicle start authorization state acquisition module; The vehicle initial state acquisition module is used to acquire the initial state of the vehicle, and the initial state of the vehicle includes the power-on state, the power-off state, and the READY state; The vehicle gear acquisition module is used to acquire the current gear of the vehicle; The vehicle brake pedal state acquisition module is used to acquire the stepping state of the brake pedal of the current vehicle, and the stepping state includes the brake pedal being depressed and the brake pedal being released; The vehicle start protection signal state acquisition module is used to acquire the vehicle start protection signal state; the vehicle start protection signal state includes vehicle start protection activation and vehicle start protection prohibition; The vehicle start authorization state acquisition module is used to acquire the vehicle start authorization state of the vehicle; The vehicle start authorization state includes enabling vehicle start authorization and prohibiting vehicle start authorization.

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