Automotive Power Management Methods

Abstract

The present invention discloses a method for managing automobile power, including: detecting the remaining power and power detection deviation of a low-voltage battery, the power detection deviation indicating the deviation state of the remaining power detection result under the current working environment; sending the remaining power and power detection deviation of the low-voltage battery to a controller; the controller turns on or off a power management module according to the remaining power and power detection deviation of the low-voltage battery. The automobile power management method provided by the present invention detects the remaining power and power detection deviation of the battery, and according to different detection results, reduces the discharge energy of the battery in a low power state by energy reminder, load reduction or load restriction and shutdown, so as to ensure that the battery has sufficient power for vehicle starting; remote real-time monitoring of the vehicle power state can be realized; hierarchical management of the vehicle power supply is performed when the vehicle is stationary, and the vehicle power supply status is remotely monitored at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle power management, and in particular to a vehicle power management method. Background Art

[0002] When users use the vehicle's electrical appliances in an irregular manner when the vehicle is stationary and not running, they must manage the power supply to avoid battery depletion and affect the normal start of the vehicle. If the vehicle power supply is abnormal, it is necessary to remind the user so that the user can find and deal with it as soon as possible. Finally, if the user has not used the vehicle for a long time and the vehicle power supply is at risk of depletion, the user can be reminded through a mobile phone APP text message to deal with it as soon as possible. Vehicle power management includes battery power management, in-vehicle power reminder, and remote terminal power reminder.

[0003] The current automotive power management strategy only obtains the current battery status through the battery sensor, and the generator adjusts the current generator power generation according to the power load of the vehicle's electrical equipment and the status of the battery. The disadvantage of this management strategy is that, on the one hand, when the vehicle is stationary and not started, the power supply of the entire vehicle is not managed, and the user is not reminded to facilitate early detection and handling of problems. On the other hand, when the vehicle has not been powered for a long time and the battery is low on power, affecting the engine start, the user is not promptly and proactively reminded of the vehicle status, resulting in the user's vehicle model being unable to start and use normally.

[0004] Therefore, a method for automotive power management is urgently needed. Summary of the invention

[0005] The purpose of the present invention is to provide an automobile power management method to solve the problems in the above-mentioned prior art. It can manage the power of the whole vehicle in a hierarchical manner when the vehicle is stationary, reduce the discharge energy of the battery in a low-power state, and ensure that the battery has sufficient power for starting the vehicle.

[0006] The present invention provides a method for managing an automobile power supply, which comprises the following steps:

[0007] Detecting the remaining power of the low-voltage battery and the power detection deviation, wherein the power detection deviation indicates the deviation state of the remaining power detection result under the current working environment;

[0008] Sending the remaining power and power detection deviation of the low-voltage battery to a controller;

[0009] The controller turns on or off the power management module according to the remaining power of the low-voltage battery and the power detection deviation.

[0010] In the automobile power management method as described above, preferably, the controller includes a gateway, a body control module or a body domain controller.

[0011] In the above-mentioned automobile power management method, preferably, the detecting the remaining power of the low-voltage battery and the power detection deviation specifically includes:

[0012] The remaining power and power detection deviation of the low-voltage battery are detected by the battery power sensor.

[0013] In the above-mentioned automobile power management method, preferably, the sending of the remaining power and power detection deviation of the low-voltage battery to the controller specifically includes:

[0014] The battery power sensor sends the detected remaining power and power detection deviation of the low-voltage battery to the controller in real time through LIN communication.

[0015] In the automobile power management method as described above, preferably, the state of the power management module includes a first state and a second state, wherein, when the engine is running, the low power management module enters the first state and does not work, and the controller sends a first power management state value; when the engine is not running and the ignition gear is in the ON gear, the low power management module can enter the second state according to the remaining power of the low-voltage battery and the power detection deviation, the low power management module works, and the controller sends a second power management state value.

[0016] In the automobile power management method as described above, preferably, when the power management module is in the first state, the low power management module does not work; when the power management module is in the second state and the time to enter the second state does not exceed 1 minute, the low power management module controls the instrument cluster and the audio system to remind the low power state, and lowers the volume of the audio system, and at the same time lowers the air volume of the air-conditioning blower; when the power management module is in the second state and the time to enter the second state exceeds 1 minute, the low power management module turns off the load and the power mode jumps to the OFF mode.

[0017] In the above-mentioned automobile power management method, preferably, the controller turns on or off the power management module according to the remaining power of the low-voltage battery and the power detection deviation, which specifically includes:

[0018] The controller adjusts the working state of the power management module at least according to the remaining power under the power detection deviation.

[0019] In the above-mentioned automobile power management method, preferably, the controller adjusts the working state of the power management module at least according to the remaining power under the power detection deviation, which specifically includes:

[0020] When the power detection deviation is greater than 15%, the working state of the power management module is adjusted according to the remaining power under the power detection deviation. If the remaining power is greater than 50%, the low power management module enters the first state and does not work; if the remaining power is less than or equal to 50%, the low power management module enters the second state and starts working;

[0021] When the power detection deviation is less than or equal to 15%, the working state of the power management module is adjusted according to the remaining power under the power detection deviation and the ambient temperature;

[0022] When the power detection deviation is invalid, the working state of the power management module is adjusted according to the remaining power under the power detection deviation. If the remaining power is greater than 50%, the low power management module enters the first state and the low power management module does not work; if the remaining power is less than or equal to 50%, the low power management module enters the second state and the low power management module starts working.

[0023] In the above-mentioned automobile power management method, preferably, when the power detection deviation is less than or equal to 15%, adjusting the working state of the power management module according to the power detection deviation and the remaining power at the ambient temperature specifically includes:

[0024] If the ambient temperature is less than or equal to -18°C and the remaining power is greater than 60%, the low power management module enters the first state and the low power management module does not work;

[0025] If the ambient temperature is between -18°C and 0°C, and the remaining power is greater than 50%, the low power management module enters the first state, and the low power management module does not work;

[0026] If the ambient temperature is greater than 0°C and the remaining power is greater than 45%, the low power management module enters the first state and does not work;

[0027] If the ambient temperature is less than or equal to -18°C and the remaining power is less than or equal to 60%, the low power management module enters the second state and starts working;

[0028] If the ambient temperature is between -18°C and 0°C, and the remaining power is less than or equal to 50%, the low power management module enters the second state and starts working;

[0029] If the ambient temperature is greater than or equal to 0° C., and the remaining power is less than or equal to 45%, the low power management module enters the second state and starts to work.

[0030] The vehicle power management method as described above, wherein, preferably, the vehicle power management method further comprises:

[0031] Remote vehicle power monitoring through the on-board T-BOX controller and TSP platform, including:

[0032] After the vehicle goes into sleep mode, in response to the remote wake-up command sent by the TSP platform, the on-board T-BOX controller collects the voltage value of the vehicle battery, and when the voltage value is lower than the preset voltage threshold, it reminds the user through the mobile phone APP information and reports the battery warning information to the TSP platform.

[0033] The automobile power management method of the present invention detects the remaining power of the battery and the power detection deviation, and according to different detection results, reduces the discharge energy of the battery in a low power state through energy reminders, load reduction or load limit shutdown, so as to ensure that the battery has sufficient power for vehicle starting; and actively reminds customers to pay attention when there is a problem with the battery power of the vehicle; remote real-time monitoring of the vehicle power status can be realized; the present invention can perform hierarchical management of the power supply of the entire vehicle when the vehicle is stationary, and remotely monitor the vehicle power status. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0035] Figure 1 The present invention is a flowchart of an embodiment of the automobile power management method provided by the present invention. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0037] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprises" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When a specific component is described as being connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0039] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0040] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0041] like Figure 1 As shown, the vehicle power management method provided by this embodiment includes the following steps in actual execution:

[0042] Step S1, detecting the remaining power (State of Charge, SOC, also known as the state of charge) and power detection deviation of the low-voltage battery, wherein the power detection deviation represents the deviation state of the remaining power detection result under the current working environment.

[0043] Specifically, the remaining power and power detection deviation of the low-voltage battery are detected by a battery power sensor (Intelligent Battery Sensor, IBS). The detection of the power detection deviation takes into account the impact of the current working environment (such as temperature, humidity, etc.) on the detection result. Different remaining power and power detection deviations reflect the energy level of the battery in the current working environment, which is convenient for formulating different hierarchical power management strategies according to different energy levels in the subsequent step S3. Among them, illustratively, the low-voltage battery can be, for example, a 12V battery. It should be noted that the present invention does not specifically limit parameters such as the voltage and power status of the battery.

[0044] Step S2: sending the remaining power and power detection deviation of the low-voltage battery to a controller.

[0045] The controller includes a gateway, a body control module (BCM) or a body domain controller. It should be noted that the present invention does not specifically limit the type of controller.

[0046] Specifically, the battery power sensor sends the remaining power and power detection deviation of the low-voltage battery detected to the controller in real time via LIN (Local Interconnect Network, serial communication network) communication. In a specific implementation, the IBS sensor is installed at the negative pole of the battery and communicates with the controller via LIN. In the present invention, the battery power sensor can monitor the SOC state and detection deviation state of the battery, and output them to the controller via LIN communication.

[0047] Step S3: the controller turns on or off the power management module according to the remaining power of the low-voltage battery and the power detection deviation.

[0048] Among them, the state of the power management module includes a first state and a second state. Among them, when the engine is running, the low power management module enters the first state and does not work, and the controller sends a first power management state value; when the engine is not running and the ignition gear is in the ON gear, the low power management module can enter the second state according to the remaining power of the low-voltage battery and the power detection deviation, the low power management module works, and the controller sends a second power management state value.

[0049] Specifically, when the power management module is in the first state, the low power management module does not work; when the power management module is in the second state and the time to enter the second state does not exceed 1 minute, the low power management module controls the instrument cluster and the audio system to remind the low power state, and lowers the volume of the audio system, and at the same time lowers the air volume of the air-conditioning blower; when the power management module is in the second state and the time to enter the second state exceeds 1 minute, the low power management module turns off the load (for example, lights, wipers, radio, etc.), and the power mode jumps to OFF mode.

[0050] The audio system may be, for example, an MP5 display. In one embodiment of the present invention, when the power management signal received by the audio system is too low, a low power reminder pops up on the screen: "12 volt battery is low, please start the engine or turn off the infotainment system." At the same time, the audio volume can be lowered to half of the original. After the engine is started, the generator can start working. It should be noted that the present invention does not specifically limit the volume adjustment range of the audio system.

[0051] When the power management signal received by the instrument is too low, a low-battery reminder pops up on the screen: "The 12-volt battery is low, please start the engine to charge." After the engine is started, the generator can start working.

[0052] When the power management signal received by the air conditioner is too low, the air volume of the air conditioner blower is adjusted to the minimum air volume.

[0053] In a specific implementation of step S3, the controller adjusts the working state of the power management module at least according to the remaining power under the power detection deviation.

[0054] In one implementation of the automobile power management method of the present invention, step S3 may specifically include:

[0055] Step S31, when the power detection deviation is greater than 15%, adjust the working state of the power management module according to the remaining power under the power detection deviation. If the remaining power is greater than 50%, the low power management module enters the first state and the low power management module does not work; if the remaining power is less than or equal to 50%, the low power management module enters the second state and the low power management module starts working.

[0056] Step S32: When the power detection deviation is less than or equal to 15%, the working state of the power management module is adjusted according to the power detection deviation and the remaining power under the ambient temperature.

[0057] In one implementation of the automobile power management method of the present invention, step S32 may specifically include:

[0058] Step S321: If the ambient temperature is less than or equal to -18°C and the remaining power is greater than 60%, the low power management module enters the first state and does not work.

[0059] Step S322: If the ambient temperature is between -18°C and 0°C, and the remaining power is greater than 50%, the low power management module enters the first state and does not work.

[0060] Step S323: If the ambient temperature is greater than 0° C. and the remaining power is greater than 45%, the low power management module enters the first state and does not work.

[0061] Step S324: If the ambient temperature is less than or equal to -18°C and the remaining power is less than or equal to 60%, the low power management module enters the second state and starts working.

[0062] Step S325: If the ambient temperature is between -18°C and 0°C, and the remaining power is less than or equal to 50%, the low power management module enters the second state and starts working.

[0063] Step S326: If the ambient temperature is greater than or equal to 0° C. and the remaining power is less than or equal to 45%, the low power management module enters the second state and starts working.

[0064] Step S33: When the power detection deviation is invalid, adjust the working state of the power management module according to the remaining power under the power detection deviation. If the remaining power is greater than 50%, the low power management module enters the first state and does not work; if the remaining power is less than or equal to 50%, the low power management module enters the second state and starts working.

[0065] To ensure smooth starting of the vehicle, the present invention defines different energy levels according to the SOC state of the battery detected by the battery sensor in a non-driving mode (the vehicle is not started, and the ignition switch is in the IGN or ACC state). Under different energy levels, energy reminders, load reduction, or load limitation and shutdown are used to reduce the discharge energy of the battery in a low-power state, so as to ensure that the battery has sufficient power for starting the vehicle.

[0066] In some implementations of the present invention, the automobile power management method further includes:

[0067] Step S4: remotely monitor the vehicle power supply through the vehicle-mounted T-BOX controller and the TSP platform.

[0068] Specifically, after the vehicle goes into sleep mode, in response to a remote wake-up command from the TSP platform, the onboard T-BOX controller collects the voltage of the vehicle battery, and when the voltage is lower than a preset voltage threshold, it alerts the user through a mobile phone APP message and reports a battery warning message to the TSP platform. The preset voltage threshold may be 11.5V, for example.

[0069] In the specific implementation, after the whole vehicle is dormant, the on-board T-BOX controller is awakened by receiving a remote wake-up command issued by the TSP platform, so that the on-board T-BOX controller executes the low voltage warning command. The on-board T-BOX controller collects the voltage value of the battery of the whole vehicle. When the voltage value is too low, it will remind the user through the mobile phone APP information; and report the battery warning information to the TSP platform once. The warning content can be, for example: battery voltage report.

[0070] In one embodiment of the present invention, when the voltage U collected by the vehicle-mounted T-BOX controller is less than or equal to 11.5V and lasts for more than 2s, the vehicle-mounted T-BOX controller reports battery warning information to the TSP platform: the battery voltage is low, and reminds the customer on the client side that the battery power of the entire vehicle is low, thereby avoiding false alarms caused by inaccurate voltage collection or unstable voltage.

[0071] In one implementation of the present invention, when the vehicle is parked and not used for a long time, the voltage value of the entire vehicle can be collected through the on-board T-BOX controller. If the voltage value is too low, the information is transmitted to the operator's SMS platform through the 4G network signal, and the operator's SMS platform sends a text message to the user's mobile phone.

[0072] The automobile power management method provided by the embodiment of the present invention detects the remaining power of the battery and the power detection deviation, and according to different detection results, reduces the discharge energy of the battery in a low-power state through energy reminders, load reduction or load limit shutdown, so as to ensure that the battery has sufficient power for vehicle starting; and actively reminds customers to pay attention when there is a problem with the battery power of the vehicle; remote real-time monitoring of the vehicle power status can be realized; the present invention can perform hierarchical management of the power supply of the entire vehicle when the vehicle is stationary, and remotely monitor the vehicle power status.

[0073] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0074] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A method for managing automobile power, characterized in that: The steps include: Detecting the remaining power of the low-voltage battery and the power detection deviation, wherein the power detection deviation indicates the deviation state of the remaining power detection result under the current working environment; Sending the remaining power and power detection deviation of the low-voltage battery to a controller; The controller turns on or off the power management module according to the remaining power of the low-voltage battery and the power detection deviation. The state of the power management module includes a first state and a second state, wherein when the engine is running, the power management module enters the first state and does not work, and the controller issues a first power management state value; when the engine is not running and the ignition gear is in the ON gear, the power management module can enter the second state according to the remaining power of the low-voltage battery and the power detection deviation, the power management module works, and the controller issues a second power management state value, When the power management module is in the first state, the power management module does not work; when the power management module is in the second state and the time to enter the second state does not exceed 1 minute, the power management module controls the instrument cluster and the audio system to remind of the low battery status, lowers the volume of the audio system, and lowers the air volume of the air-conditioning blower; when the power management module is in the second state and the time to enter the second state exceeds 1 minute, the power management module turns off the load and the power mode jumps to the OFF mode.

2. The automotive power management method according to claim 1, characterized in that: The controller includes a gateway, a body control module or a body domain controller.

3. The automotive power management method according to claim 1, characterized in that: The detection of the remaining power of the low-voltage battery and the power detection deviation specifically includes: The remaining power and power detection deviation of the low-voltage battery are detected by the battery power sensor.

4. The automotive power management method according to claim 3, characterized in that: The sending the remaining power and power detection deviation of the low-voltage battery to the controller specifically includes: The battery power sensor sends the detected remaining power and power detection deviation of the low-voltage battery to the controller in real time through LIN communication.

5. The automotive power management method according to claim 1, characterized in that: The controller turns on or off the power management module according to the remaining power of the low-voltage battery and the power detection deviation, specifically including: The controller adjusts the working state of the power management module at least according to the remaining power under the power detection deviation.

6. The automobile power management method according to claim 5, characterized in that: The controller adjusts the working state of the power management module at least according to the remaining power under the power detection deviation, specifically including: When the power detection deviation is greater than 15%, the working state of the power management module is adjusted according to the remaining power under the power detection deviation. If the remaining power is greater than 50%, the power management module enters the first state and does not work; if the remaining power is less than or equal to 50%, the power management module enters the second state and starts working; When the power detection deviation is less than or equal to 15%, the working state of the power management module is adjusted according to the remaining power under the power detection deviation and the ambient temperature; When the power detection deviation is invalid, the working state of the power management module is adjusted according to the remaining power under the power detection deviation. If the remaining power is greater than 50%, the power management module enters the first state and does not work; if the remaining power is less than or equal to 50%, the power management module enters the second state and starts working.

7. The automobile power management method according to claim 6, characterized in that: When the power detection deviation is less than or equal to 15%, adjusting the working state of the power management module according to the power detection deviation and the remaining power at the ambient temperature specifically includes: If the ambient temperature is less than or equal to -18°C and the remaining power is greater than 60%, the power management module enters the first state and does not work; If the ambient temperature is between -18°C and 0°C, and the remaining power is greater than 50%, the power management module enters the first state and the power management module does not work; If the ambient temperature is greater than 0°C and the remaining power is greater than 45%, the power management module enters the first state and does not work; If the ambient temperature is less than or equal to -18°C and the remaining power is less than or equal to 60%, the power management module enters the second state and starts working; If the ambient temperature is between -18°C and 0°C, and the remaining power is less than or equal to 50%, the power management module enters the second state and starts working; If the ambient temperature is greater than or equal to 0° C., and the remaining power is less than or equal to 45%, the power management module enters the second state and starts working.

8. The automobile power management method according to claim 1, characterized in that: The automobile power management method further includes: Remote vehicle power monitoring through the on-board T-BOX controller and TSP platform, including: After the vehicle goes into sleep mode, in response to the remote wake-up command sent by the TSP platform, the on-board T-BOX controller collects the voltage value of the vehicle battery, and when the voltage value is lower than the preset voltage threshold, it reminds the user through the mobile phone APP information and reports the battery warning information to the TSP platform.

Images