A control method and device for a vehicle power supply

Abstract

The application discloses a kind of vehicle power supply control method and device, method includes: according to vehicle positioning system obtains vehicle trajectory information;When vehicle is not started, vehicle state is identified by vehicle trajectory information;Vehicle state includes: ocean transport state, short-distance transport state and short-term parking state;When vehicle is in ocean transport state, control first relay closes, other relays are disconnected, and power is supplied to the first type controller;When vehicle is in short-distance transport state, control second relay closes, other relays are disconnected, and power is supplied to the second type controller;When vehicle is in short-term parking state, control third relay closes, other relays are disconnected, and power is supplied to the third type controller.It is simple to operate, can effectively reduce the static current of vehicle, improve the service life of battery.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, specifically to a control method and device for vehicle power supply. Background Technology

[0002] As the power source for the vehicle's electrical system, the battery is fundamental to ensuring the normal operation of all electrical components. Sometimes, due to prolonged parking or other reasons, the vehicle's controllers remain in standby mode for extended periods, generating static current that consumes battery energy, leading to battery depletion. A depleted battery not only affects its lifespan but also impacts the vehicle's functionality and travel convenience.

[0003] In existing technologies, the following methods exist for reducing quiescent current: adding a quiescent current monitoring and management function to strictly limit the quiescent current; or manually cutting off the power supply to some controllers. However, adding a quiescent current monitoring and management function is complex and costly to develop; while manually cutting off the power supply to some controllers increases labor costs, and the types of controllers that are active vary depending on the vehicle's state, requiring manual identification of which controllers can be powered off, making the operation complex and prone to errors; if only a fixed number of controllers are powered off, the flexibility is poor, unnecessary quiescent current will still occur, and the control effect is poor. Summary of the Invention

[0004] In view of this, this application provides a control method and device for vehicle power supply, which can simply and effectively reduce the vehicle's static current and reduce battery depletion problems.

[0005] To solve the above problems, the technical solution provided in this application is as follows:

[0006] The first aspect of this application provides a method for controlling the power supply of a vehicle, including:

[0007] Vehicle trajectory information is obtained from the vehicle positioning system;

[0008] When the vehicle is not started, the vehicle status is identified through vehicle trajectory information; the vehicle status includes: ocean shipping status, short-distance shipping status, and short-term parking status.

[0009] When the vehicle is in ocean shipping mode, the first relay is closed and the other relays are open to supply power to the first type of controller; the first type of controller is connected to the battery through the first relay; the first type of controller is the controller whose expected standby time is less than a first threshold in ocean shipping mode.

[0010] When the vehicle is in short-distance transport mode, the control second relay is closed and the other relays are opened to supply power to the second type controller; the second type controller is connected to the battery through the second relay; the second type controller is a controller whose expected standby time in short-distance transport mode is less than a second threshold; the second threshold is less than the first threshold.

[0011] When the vehicle is in a short-term parking state, the control third relay closes and the other relays open to supply power to the third type controller; the third type controller is connected to the battery through the third relay; the third type controller is the controller whose expected standby time in the short-term parking state is less than the third threshold; the third threshold is less than the second threshold.

[0012] Preferably, the vehicle trajectory information specifically includes: the speed corresponding to the trajectory and the trajectory length;

[0013] When the vehicle is not started, the vehicle status is identified through vehicle trajectory information, specifically including:

[0014] When the vehicle is not started, the trajectory length is less than the first distance, and the number of times the speed reaches 0 is greater than the preset number, the vehicle status is identified as short-distance transportation status.

[0015] Preferably, when the vehicle is not started, the vehicle status is identified through vehicle trajectory information, specifically including:

[0016] When the vehicle is not started and there is no vehicle trajectory information within a preset time, the vehicle status is identified as short-term parking.

[0017] Preferably, the vehicle trajectory information specifically includes: the trajectory start point and the trajectory end point;

[0018] When the vehicle is not started, the vehicle status is identified through vehicle trajectory information, specifically including:

[0019] When the vehicle is not started, and the starting point and ending point of the trajectory include a dock or port, the vehicle status is identified as ocean shipping status.

[0020] Preferably, it further includes:

[0021] When the vehicle is turned off, the vehicle displacement is 0 and the vehicle is locked, the vehicle status is identified as the anti-theft state when the engine is off; the fourth relay is closed and the other relays are opened to supply power to the fourth type controller; the fourth type controller is connected to the battery through the fourth relay; the fourth type controller is the controller whose expected standby time in the anti-theft state is less than the fourth threshold; the fourth threshold is less than the third threshold.

[0022] When the vehicle is turned off, the vehicle displacement is 0 and the vehicle is unlocked, the vehicle status is identified as an off-state, unsecured state; the fifth relay is closed and the other relays are opened to supply power to the fifth type controller; the fifth type controller is connected to the battery through the fifth relay; the fifth type controller is a controller whose expected standby time in the off-state, unsecured state is less than the fifth threshold; the fifth threshold is less than the fourth threshold.

[0023] The second aspect of this application provides a control device for power supply to a vehicle, the vehicle including: a first relay, a second relay, a third relay, a first type controller, a second type controller, a third type controller, and a battery;

[0024] The first type of controller is connected to the battery via a first relay; the second type of controller is connected to the battery via a second relay; the third type of controller is connected to the battery via a third relay.

[0025] The first type of controller is the controller whose expected standby time is less than the first threshold under ocean shipping conditions; the second type of controller is the controller whose expected standby time is less than the second threshold under short-haul shipping conditions; the second threshold is less than the first threshold; the third type of controller is the controller whose expected standby time is less than the third threshold under short-term parking conditions; the third threshold is less than the second threshold.

[0026] The vehicle power supply control device includes: an information acquisition unit, an identification unit, and a control unit;

[0027] The information acquisition unit is used to acquire vehicle trajectory information based on the vehicle positioning system.

[0028] The identification unit is used to identify the vehicle status by means of vehicle trajectory information when the vehicle is not started; the vehicle status includes: ocean shipping status, short-distance shipping status and short-term parking status.

[0029] The control unit is used to control the first relay to close and the other relays to open when the vehicle is in ocean transport mode, so as to supply power to the first type of controller; to control the second relay to close and the other relays to open when the vehicle is in short-distance transport mode, so as to supply power to the second type of controller; and to control the third relay to close and the other relays to open when the vehicle is in short-term parking mode, so as to supply power to the third type of controller.

[0030] Preferably, the vehicle trajectory information specifically includes: the speed corresponding to the trajectory and the trajectory length;

[0031] The identification unit is specifically used to identify the vehicle status as short-distance transportation when the vehicle is not started, the trajectory length is less than the first distance, and the number of times the speed reaches 0 is greater than a preset number.

[0032] Preferably, the identification unit is specifically used to identify the vehicle status as a short-term parked state when the vehicle is not started and there is no vehicle trajectory information within a preset time.

[0033] Preferably, the vehicle trajectory information specifically includes: the trajectory start point and the trajectory end point;

[0034] The identification unit is specifically used to identify the vehicle status as ocean shipping status when the vehicle is not started and the trajectory start point and trajectory end point include a dock or port.

[0035] Preferably, the vehicle further includes: a fourth relay, a fifth relay, a fourth type of controller, and a fifth type of controller;

[0036] The fourth type of controller is connected to the battery via a fourth relay; the fourth type of controller is a controller whose expected standby time in the anti-theft state after the fire is off is less than a fourth threshold; the fourth threshold is less than the third threshold;

[0037] The fifth type of controller is connected to the battery via the fifth relay; the fifth type of controller is a controller whose expected standby time is less than the fifth threshold when the engine is off and not under anti-theft conditions; the fifth threshold is less than the fourth threshold;

[0038] The identification unit is also used to identify the vehicle status as "off-fire anti-theft state" when the vehicle is turned off, the vehicle displacement is 0 and the vehicle is locked; and to identify the vehicle status as "off-fire un-anti-theft state" when the vehicle is turned off, the vehicle displacement is 0 and the vehicle is unlocked.

[0039] The control unit is also used to control the fourth relay to close and the other relays to open in the fire-off anti-theft state, so as to supply power to the fourth type of controller; and to control the fifth relay to close and the other relays to open in the fire-off non-anti-theft state, so as to supply power to the fifth type of controller.

[0040] Therefore, this application has the following beneficial effects:

[0041] The vehicle power supply control method provided in this application obtains vehicle trajectory information based on a vehicle positioning system. When the vehicle is not started, the vehicle state is divided based on the vehicle trajectory information, including: ocean shipping state, short-haul shipping state, and short-term parking state. When the vehicle is in ocean shipping state, the first relay is closed and other relays are opened to supply power to the first type of controller. The first type of controller is connected to the battery through the first relay. The first type of controller is the controller whose expected standby time in ocean shipping state is less than a first threshold. Therefore, supplying power to the first type of controller means supplying power to the controller expected to be used in ocean shipping state, while other controllers that are not needed are not supplied with power, reducing power consumption. The static current consumption caused by the controller's standby reduces battery drain. Similarly, when the vehicle is in short-distance transportation, the second relay is closed while other relays are open, supplying power to the second type of controller. The second type of controller is connected to the battery through the second relay. The second type of controller is one whose expected standby time is less than a second threshold under short-distance transportation conditions. The second threshold is less than the first threshold. When the vehicle is in short-term parking, the third relay is closed while other relays are open, supplying power to the third type of controller. The third type of controller is connected to the battery through the third relay. The third type of controller is one whose expected standby time is less than a third threshold under short-term parking conditions. The third threshold is less than the second threshold. The vehicle power supply control method provided in this application classifies vehicle states and controller types. Under the appropriate vehicle state, closing only one relay is sufficient to supply power to the controller required for that state, while other controllers are not supplied. This simple operation effectively reduces the vehicle's static current, minimizes battery drain during long-term non-use conditions such as transportation, and improves battery life. Attached Figure Description

[0042] Figure 1 A schematic diagram illustrating an application scenario of the vehicle power supply control method according to embodiments of this application;

[0043] Figure 2 A flowchart illustrating a vehicle power supply control method provided in this application embodiment;

[0044] Figure 3 A flowchart of a vehicle state recognition process provided in this application embodiment;

[0045] Figure 4 This is a schematic diagram of a vehicle power supply control device provided in an embodiment of this application. Detailed Implementation

[0046] To enable those skilled in the art to better understand and implement the technical solutions of this application, the specific application scenarios of this application are described below.

[0047] See Figure 1The figure is a schematic diagram of the application scenario of the vehicle power supply control method according to an embodiment of this application.

[0048] The vehicle power supply control method provided in this application embodiment is applied to a vehicle; the vehicle includes a battery and multiple controllers, and the battery supplies power to the controllers.

[0049] Specifically, the multiple controllers include: a first type controller 101, a second type controller 102, and a third type controller 103. The first type controller 101 is connected to the battery B via a first relay K1; the second type controller 102 is connected to the battery B via a second relay K2; and the third type controller 103 is connected to the battery B via a third relay K3.

[0050] Under the above power supply architecture, each electrical appliance controls the power supply status of its corresponding controller.

[0051] It should be understood that the vehicle also includes other relays for power supply during normal vehicle use; the connection relationship between the relays and the controller during normal vehicle use will not be discussed in detail here.

[0052] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and specific implementation details.

[0053] See Figure 2 The figure is a flowchart of a vehicle power supply control method provided in an embodiment of this application.

[0054] The vehicle power supply control method provided in this application includes:

[0055] S201: Obtain vehicle trajectory information based on the vehicle positioning system.

[0056] Specifically, the vehicle positioning system can be the Global Positioning System (GPS), or the BeiDou Navigation Satellite System, etc.; the vehicle trajectory information can include the trajectory length formed by the positioning change, or the speed corresponding to the trajectory, etc., which are not specifically limited in this application.

[0057] S202: When the vehicle is not started, the vehicle status is identified by the vehicle trajectory information.

[0058] It should be understood that when the vehicle is not started, it means that there are some controllers in the vehicle that are not in use, and static current control needs to be considered; while when the vehicle has trajectory information, it means that the vehicle is being transported.

[0059] Vehicle status includes: ocean shipping status, short-distance shipping status, and short-term parking status.

[0060] Ocean shipping refers to the export of vehicles over long distances, often taking several months. During ocean shipping, without measures to reduce quiescent current, the vehicle may arrive at its destination with a dead battery, preventing it from starting.

[0061] Short-distance transportation refers to the process where, after a vehicle arrives at a port or dock, it is transported to the sales location by truck or other means, often taking several days or weeks. During this process, even if the battery has sufficient charge to support short-distance transportation, there is still considerable unnecessary static current consumption, reducing the battery's lifespan.

[0062] Short-term parking refers to the temporary parking of a car at locations such as ports, docks, or sales centers, often for several days or longer. This process also involves significant unnecessary static current consumption, reducing battery lifespan.

[0063] There are various possible ways to identify vehicle status, such as judging vehicle status by the trajectory length of vehicle trajectory information, etc. This application does not make any specific limitations on this.

[0064] S203: When the vehicle is in ocean shipping mode, the first relay is closed and the other relays are opened to supply power to the first type of controller.

[0065] S204: When the vehicle is in short-distance transportation mode, the control second relay is closed and other relays are opened to supply power to the second type of controller.

[0066] S205: When the vehicle is in a short-term parking state, the control third relay is closed and the other relays are opened to supply power to the third type of controller.

[0067] In this application embodiment, the first type of controller is a controller whose expected standby time is less than a first threshold under ocean shipping conditions; the second type of controller is a controller whose expected standby time is less than a second threshold under short-distance shipping conditions; and the third type of controller is a controller whose expected standby time is less than a third threshold under short-term parking conditions.

[0068] The estimated standby time can be obtained in several ways: the estimated standby time under different vehicle states can be predicted by those skilled in the art based on the controller type and the state scenario. The estimated standby time under different vehicle states can also be obtained through the controller's historical usage data, for example, taking the shortest standby time of the controller in the most recent corresponding vehicle state as the estimated standby time.

[0069] The three thresholds satisfy the following relationship: the second threshold is less than the first threshold; the third threshold is less than the second threshold. The specific values ​​of the first, second, and third thresholds can be set by those skilled in the art, and this application does not impose specific limitations on them. Preferably, the first threshold is 1 to 2 months; the second threshold is 1 to 2 weeks; and the third threshold is 4 to 7 days.

[0070] It should be understood that the first type of controller is the controller expected to be used during long-haul shipping. The second type of controller is the controller expected to be used during short-haul shipping. The third type of controller is the controller expected to be used during short-term storage.

[0071] With the above-mentioned controller division and relay connection, the controllers that are not in use corresponding to the vehicle status are not connected to the battery. Therefore, the controllers that are not in use do not have static current consumed in standby mode. The overall static current of the vehicle is reduced, the situation of battery depletion is reduced, and the battery life is improved.

[0072] The vehicle power supply control method provided in this application embodiment obtains vehicle trajectory information based on a vehicle positioning system. When the vehicle is not started, the vehicle state is divided based on the vehicle trajectory information, including: ocean shipping state, short-distance shipping state, and short-term parking state. When the vehicle is in ocean shipping state, the first relay is closed and other relays are opened to supply power to the first type of controller. The first type of controller is connected to the battery through the first relay. The first type of controller is the controller whose expected standby time in ocean shipping state is less than a first threshold. Therefore, supplying power to the first type of controller means supplying power to the controller expected to be used in ocean shipping state, while other controllers that are not needed are not supplied with power, thus reducing power consumption. The reduced static current consumption caused by controller standby reduces battery drain. Similarly, when the vehicle is in short-distance transport, the second relay is closed while other relays are open, supplying power to the second type of controller. The second type of controller is connected to the battery through the second relay. The second type of controller is one whose expected standby time is less than a second threshold under short-distance transport conditions, and the second threshold is less than the first threshold. When the vehicle is in short-term parking, the third relay is closed while other relays are open, supplying power to the third type of controller. The third type of controller is connected to the battery through the third relay. The third type of controller is one whose expected standby time is less than a third threshold under short-term parking conditions, and the third threshold is less than the second threshold. The vehicle power supply control method provided in this application classifies vehicle states and controller types. Under the appropriate vehicle state, closing only one relay is sufficient to supply power to the controller required for that state, while other controllers are not supplied. This simple operation effectively reduces the vehicle's static current, minimizes battery drain during long-term non-use conditions such as transport, and improves battery life.

[0073] It should be noted that, taking the first and second type controllers as examples, since the first and second type controllers are determined based on the expected standby time and the set first and second thresholds, under certain circumstances, the first and second type controllers may include the same controller A; that is, controller A is required in both ocean shipping and short-haul shipping. In this case, the first and second relays are connected in parallel between the battery and controller A, and both the first and second relays can control the power supply to controller A respectively.

[0074] This application does not specifically limit the device that performs the vehicle power supply control method of this embodiment. For example, the Intelligent Body Domain Unit (IBDU) can be used to perform the above-mentioned vehicle status recognition and relay control steps; of course, vehicle status recognition and relay control can also be performed by different controllers.

[0075] To help those skilled in the art better understand the technical solutions provided in this application, the following uses the example of the vehicle power supply control method being executed by the IBDU in the vehicle to introduce the possible compositions of the first type of controller, the second type of controller, and the third type of controller.

[0076] The first type of controller may include: IBDU and positioning system controller.

[0077] The second type of controller may include: IBDU, positioning system controller, window motor controller and rain light sensor.

[0078] The third type of controller may include: IBDU, positioning system controller, window motor controller, rain and light sensor, driving recorder (parking monitoring) and high-voltage battery controller, etc.

[0079] In addition to the ocean shipping, short-distance shipping, and short-term parking states involved in vehicle transportation mentioned in the above embodiments, considering that there are also multiple states during daily vehicle use, in order to further save static current during daily vehicle use, other implementation methods can further identify the vehicle's off-state (no anti-theft) state and the vehicle's off-state (anti-theft) state.

[0080] See Figure 3 The figure is a flowchart of a vehicle status recognition process provided in an embodiment of this application.

[0081] In this embodiment of the application, the vehicle trajectory information specifically includes: the speed corresponding to the trajectory, the trajectory length, the trajectory start point, and the trajectory end point.

[0082] Correspondingly, the vehicle status recognition process specifically includes:

[0083] S301: Determine whether the vehicle has not started, whether the trajectory length is less than the first distance, and whether the number of times the speed reaches 0 is greater than the preset number; if so, identify the vehicle status as short-distance transportation status.

[0084] If the trajectory length is less than the first distance, it indicates that the transportation trajectory is relatively short, and transportation is usually carried out by means of vehicles such as trucks; if the speed reaches 0 more times than the preset number, it indicates that the vehicle will stop and start during transportation, which corresponds to situations such as waiting at traffic lights and traffic jams that may occur in short-distance transportation such as trucks.

[0085] S302: Determine whether the vehicle is not started and whether there is no trajectory information of the vehicle within a preset time; if so, identify the vehicle status as short-term parking.

[0086] If no vehicle trajectory information is found within the preset time period, it indicates that the vehicle has not moved within the preset time period, which corresponds to a short-term parking status. The specific value of the preset time period can be set by those skilled in the art according to their needs, and this application does not impose any specific limitations on it.

[0087] S303: Determine whether the vehicle is not started and whether the trajectory start point and trajectory end point include a dock or port; if so, identify the vehicle status as ocean shipping status.

[0088] When the starting point and ending point of the trajectory are docks or ports, it indicates that the vehicle is likely transported by cruise ship, which takes a long time and is considered ocean shipping.

[0089] In some embodiments, step S303 can also be implemented through other determination methods, such as: determining whether the trajectory length is greater than the second distance; if so, identifying the vehicle status as ocean shipping status. Since the suitable transportation distances for ocean shipping status and short-distance shipping status are different, the determination can be made through trajectory length.

[0090] S304: Determine if the vehicle is off, if the vehicle displacement is 0 and the vehicle is locked. If so, identify the vehicle status as off-fire anti-theft mode.

[0091] Specifically, whether the vehicle displacement is 0 can be obtained through the positioning system.

[0092] The vehicle displacement is 0, which distinguishes the normal anti-theft state when the engine is off from the states corresponding to the previous transportation processes.

[0093] The "engine off for security" mode is a common occurrence in daily life. For example, after driving home from get off work, you might turn off the engine, lock the car, and park it in the garage; or when going shopping, you might turn off the car, lock it, and park it in the mall's parking area.

[0094] S305: Determine if the vehicle is turned off, if the vehicle displacement is 0 and the vehicle is unlocked. If so, identify the vehicle status as turned off and not in anti-theft state.

[0095] The "no theft prevention" status when the engine is off usually refers to a situation where the user is resting or entertaining themselves in the car.

[0096] according to Figure 3 After the vehicle status identification process is completed, if the vehicle is in ocean shipping, short-distance shipping, or short-term parking status, the relay corresponding to the vehicle status is controlled to close, referring to the above embodiments. The control process and the controlled object have been described in the above embodiments and will not be repeated here.

[0097] If the vehicle is in the anti-theft mode with the engine off, the fourth relay is closed and the other relays are open, supplying power to the fourth type of controller.

[0098] The fourth type of controller is connected to the battery via the fourth relay; the fourth type of controller is a controller whose expected standby time in the anti-theft state is less than the fourth threshold; the fourth threshold is less than the third threshold.

[0099] Since the engine-off anti-theft state corresponds to parking after reaching the destination in daily life, preferably, the fourth threshold is 3 to 5 hours.

[0100] In the engine-off anti-theft mode, driving-related controllers such as radar controllers and surround view controllers are not needed, as they are expected to have a long standby time and do not require power. Specifically, the fourth category of controllers mainly includes positioning system controllers, window motor controllers, rain and light sensors, driving recorders (parking monitoring), high-voltage battery controllers, security alarm controllers, and multi-function controllers, etc. Among them, multi-function controllers refer to integrated controllers that include on-board chargers, DC-DC converters, high-voltage distribution boxes, and motor controllers.

[0101] In some embodiments, to enhance the user experience, the expected standby time of pre-adjusted controllers such as the air conditioning controller can be set to a smaller value in the engine off anti-theft state, so that users can adjust the air conditioning to a suitable temperature before using the vehicle.

[0102] Similarly, if the vehicle is in an off and un-anti-theft state, the fifth relay is closed and the other relays are open, supplying power to the fifth type controller.

[0103] The fifth type of controller is connected to the battery via the fifth relay; the fifth type of controller is a controller whose expected standby time is less than the fifth threshold when the engine is off and the anti-theft mode is activated; the fifth threshold is less than the fourth threshold.

[0104] Since the engine is off and the anti-theft state corresponds to the scenario where the user is entertaining or resting in the car, the fifth threshold is preferably 0.5 to 2 hours.

[0105] Specifically, the fifth category of controllers may include: positioning system controllers, window motor controllers, rain and light sensors, driving recorders (parking monitoring), high-voltage battery controllers, security alarm controllers, multi-function controllers, entertainment and audio controllers, reading light controllers, seat adjustment controllers, and air conditioning controllers, etc.

[0106] The vehicle power supply control method provided in this embodiment, in addition to controlling the power supply of the vehicle controller during vehicle transportation, further controls the power supply of the vehicle controller in the engine-off anti-theft state and the engine-off but not anti-theft state during daily vehicle use; this further reduces static current and improves the service life of the battery.

[0107] Based on the vehicle power supply control method provided in the above embodiments, this application also provides a vehicle power supply control device, which will be described in detail below with reference to the accompanying drawings.

[0108] See Figure 4 This figure is a schematic diagram of a vehicle power supply control device provided in an embodiment of this application.

[0109] The vehicle power supply control device provided in this application embodiment is applied to a vehicle; the vehicle includes: a first relay, a second relay, a third relay, a first type controller, a second type controller, a third type controller, and a battery.

[0110] Specifically, the first type of controller is connected to the battery via a first relay; the second type of controller is connected to the battery via a second relay; and the third type of controller is connected to the battery via a third relay.

[0111] The first type of controller is the controller whose expected standby time is less than the first threshold under ocean shipping conditions; the second type of controller is the controller whose expected standby time is less than the second threshold under short-distance shipping conditions; the second threshold is less than the first threshold; the third type of controller is the controller whose expected standby time is less than the third threshold under short-term parking conditions; the third threshold is less than the second threshold.

[0112] It should be noted that, taking the first and second type controllers as examples, since the first and second type controllers are determined based on the expected standby time and the set first and second thresholds, under certain circumstances, the first and second type controllers may include the same controller A; that is, controller A is required in both ocean shipping and short-haul shipping. In this case, the first and second relays are connected in parallel between the battery and controller A, and both the first and second relays can control the power supply to controller A respectively.

[0113] like Figure 4As shown, the vehicle power supply control device includes: an information acquisition unit 400, an identification unit 500, and a control unit 600;

[0114] The information acquisition unit 400 is used to acquire vehicle trajectory information based on the vehicle positioning system.

[0115] The identification unit 500 is used to identify the vehicle status by means of vehicle trajectory information when the vehicle is not started.

[0116] The vehicle status includes: ocean shipping status, short-haul shipping status, and short-term parking status. For a detailed description of these three vehicle statuses, please refer to the above embodiments; they will not be repeated here.

[0117] In some embodiments, the vehicle trajectory information specifically includes: the speed and trajectory length corresponding to the trajectory; then, the identification unit 500 is specifically used to identify the vehicle status as short-distance transportation status when the vehicle is not started, the trajectory length is less than the first distance, and the number of times the speed reaches 0 is greater than a preset number.

[0118] In some embodiments, the identification unit 500 is specifically used to identify the vehicle status as a short-term parked state when the vehicle is not started and there is no vehicle trajectory information within a preset time.

[0119] In some embodiments, the vehicle trajectory information specifically includes: trajectory start point and trajectory end point; then, correspondingly, the identification unit 500 is specifically used to identify the vehicle status as ocean shipping status when the vehicle is not started and the trajectory start point and trajectory end point include a dock or port.

[0120] The control unit 600 is used to control the first relay to close and the other relays to open when the vehicle is in ocean transportation mode, so as to supply power to the first type of controller; to control the second relay to close and the other relays to open when the vehicle is in short-distance transportation mode, so as to supply power to the second type of controller; and to control the third relay to close and the other relays to open when the vehicle is in short-term parking mode, so as to supply power to the third type of controller.

[0121] The vehicle power supply control device provided in this application includes: an information acquisition unit, an identification unit, and a control unit; the information acquisition unit acquires vehicle trajectory information based on a vehicle positioning system; when the vehicle is not started, the identification unit classifies the vehicle state based on the vehicle trajectory information, including: ocean shipping state, short-distance shipping state, and short-term parking state; when the vehicle is in ocean shipping state, the control unit controls the first relay to close and the other relays to open, supplying power to the first type of controller; supplying power to the first type of controller means supplying power to the controllers expected to be used in ocean shipping state, while other controllers that are not needed are not supplied with power, reducing the static current consumption caused by controller standby and reducing battery depletion; similarly, when the vehicle is in short-distance shipping state, the control unit controls the second relay to close and the other relays to open, supplying power to the second type of controller; when the vehicle is in short-term parking state, the control unit controls the third relay to close and the other relays to open, supplying power to the third type of controller. The vehicle power supply control device provided in this application embodiment classifies vehicle states and controller types. Under the appropriate vehicle state, closing only one relay can supply power to the controller required for that state, while other controllers are not supplied with power. The operation is simple, which can effectively reduce the vehicle's static current, reduce the problem of battery depletion when the vehicle is not used for a long time, such as during transportation, and improve the battery's service life.

[0122] In some embodiments, in order to further reduce the static current consumed by the controller during standby in more scenarios, the vehicle power supply control device can further identify the anti-theft state when the engine is off and the anti-theft state when the engine is off.

[0123] Fireproof and anti-theft status:

[0124] The vehicle also includes: a fourth relay and a fourth type controller. The fourth type controller is connected to the battery via the fourth relay; the fourth type controller is a controller whose expected standby time in the anti-theft state when the engine is off is less than a fourth threshold; the fourth threshold is less than the third threshold.

[0125] The identification unit 500 is also used to identify the vehicle status as an anti-theft state when the vehicle is turned off, the vehicle displacement is 0 and the vehicle is locked; correspondingly, the control unit 600 is also used to control the fourth relay to close and the other relays to open, so as to supply power to the fourth type of controller.

[0126] Engine off and no anti-theft function:

[0127] The vehicle also includes: a fifth relay and a fifth-class controller. The fifth-class controller is connected to the battery via the fifth relay; the fifth-class controller is a controller whose expected standby time is less than a fifth threshold when the engine is off and the anti-theft system is not activated; the fifth threshold is less than the fourth threshold.

[0128] The identification unit 500 is also used to identify the vehicle status as off and not in anti-theft state when the vehicle is turned off, the vehicle displacement is 0 and the vehicle is unlocked; correspondingly, the control unit 600 is also used to control the fifth relay to close and the other relays to open, so as to supply power to the fifth type controller.

[0129] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems or apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0130] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control method of a vehicle power supply, characterized by, The method comprises: obtaining vehicle trajectory information according to a vehicle positioning system, the vehicle trajectory information comprising a corresponding speed of a trajectory, a length of the trajectory, a starting point of the trajectory and an ending point of the trajectory; when the vehicle is not started, the length of the trajectory is less than a first distance, and the number of times that the speed reaches 0 is greater than a preset number of times, identifying that the vehicle state is a short-distance transportation state; when the vehicle is not started and there is no trajectory information of the vehicle within a preset time, identifying that the vehicle state is a short-term parking state; when the vehicle is not started and the starting point and the ending point of the trajectory comprise a wharf or a port, identifying that the vehicle state is an ocean transportation state; when the vehicle is in the ocean transportation state, controlling a first relay to be closed and other relays to be opened to supply power to a first type of controller; the first type of controller is connected to a storage battery through the first relay; the first type of controller is a controller whose standby time in the ocean transportation state is less than a first threshold value; when the vehicle is in the short-distance transportation state, controlling a second relay to be closed and other relays to be opened to supply power to a second type of controller; the second type of controller is connected to the storage battery through the second relay; the second type of controller is a controller whose standby time in the short-distance transportation state is less than a second threshold value; the second threshold value is less than the first threshold value; when the vehicle is in the short-term parking state, controlling a third relay to be closed and other relays to be opened to supply power to a third type of controller; the third type of controller is connected to the storage battery through the third relay; the third type of controller is a controller whose standby time in the short-term parking state is less than a third threshold value; the third threshold value is less than the second threshold value.

2. The method of claim 1, wherein, Further comprising: when the vehicle is turned off, the vehicle displacement is 0 and the vehicle is locked, identifying that the vehicle state is an off-prevention theft state; controlling a fourth relay to be closed and other relays to be opened to supply power to a fourth type of controller; the fourth type of controller is connected to the storage battery through the fourth relay; the fourth type of controller is a controller whose standby time in the off-prevention theft state is less than a fourth threshold value; the fourth threshold value is less than the third threshold value; when the vehicle is turned off, the vehicle displacement is 0 and the vehicle is not locked, identifying that the vehicle state is an off-non-prevention theft state; controlling a fifth relay to be closed and other relays to be opened to supply power to a fifth type of controller; the fifth type of controller is connected to the storage battery through the fifth relay; the fifth type of controller is a controller whose standby time in the off-non-prevention theft state is less than a fifth threshold value; the fifth threshold value is less than the fourth threshold value.

3. A control device for a vehicle powered by a fuel cell, characterized by The vehicle comprises: a first relay, a second relay, a third relay, a first type of controller, a second type of controller, a third type of controller and a storage battery; the first type of controller is connected to the storage battery through the first relay; the second type of controller is connected to the storage battery through the second relay; the third type of controller is connected to the storage battery through the third relay; The first type of controller is a controller with an estimated standby time less than a first threshold in an ocean shipping state; the second type of controller is a controller with an estimated standby time less than a second threshold in a short-distance shipping state; the second threshold is less than the first threshold; the third type of controller is a controller with an estimated standby time less than a third threshold in a short-term parking state; the third threshold is less than the second threshold; The device comprises an information acquisition unit, an identification unit and a control unit; The information acquisition unit is configured to acquire vehicle trajectory information according to a vehicle positioning system, wherein the vehicle trajectory information comprises a corresponding speed, a length, a starting point and an ending point of a trajectory; The identification unit is configured to identify a vehicle state as a short-distance shipping state when the vehicle is not started, the length of the trajectory is less than a first distance, and the number of times when the speed reaches 0 is greater than a preset number; identify the vehicle state as a short-term parking state when the vehicle is not started and there is no trajectory information of the vehicle within a preset time; and identify the vehicle state as an ocean shipping state when the vehicle is not started and the starting point and the ending point of the trajectory comprise a wharf or a port; The control unit is configured to control a first relay to be closed and other relays to be opened to supply power to a first type of controller when the vehicle is in the ocean shipping state; control a second relay to be closed and other relays to be opened to supply power to a second type of controller when the vehicle is in the short-distance shipping state; and control a third relay to be closed and other relays to be opened to supply power to a third type of controller when the vehicle is in the short-term parking state.

4. The apparatus of claim 3, wherein, The vehicle further comprises a fourth relay, a fifth relay, a fourth type of controller and a fifth type of controller; The fourth type of controller is connected to the storage battery through the fourth relay; the fourth type of controller is a controller with an estimated standby time less than a fourth threshold in an engine-off anti-theft state; and the fourth threshold is less than the third threshold; The fifth type of controller is connected to the storage battery through the fifth relay; the fifth type of controller is a controller with an estimated standby time less than a fifth threshold in an engine-off non-anti-theft state; and the fifth threshold is less than the fourth threshold; The identification unit is further configured to identify the vehicle state as the engine-off anti-theft state when the vehicle is turned off, the displacement of the vehicle is 0 and the vehicle is locked; and identify the vehicle state as the engine-off non-anti-theft state when the vehicle is turned off, the displacement of the vehicle is 0 and the vehicle is not locked; The control unit is further configured to control the fourth relay to be closed and other relays to be opened to supply power to the fourth type of controller in the engine-off anti-theft state; and control the fifth relay to be closed and other relays to be opened to supply power to the fifth type of controller in the engine-off non-anti-theft state.

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