Storage battery feed prevention method, charging system and vehicle

Abstract

The invention relates to the technical field of vehicle storage batteries, and discloses a storage battery feed prevention method, a charging system and a vehicle, and the method comprises the steps: obtaining the available duration of a storage battery in a parking state; acquiring the load electricity consumption duration in the parking state; when the power utilization duration of the load reaches the available duration of the storage battery, disconnecting the connection between the storage battery and the power utilization load; when the connection between the storage battery and the electric load is disconnected, the storage battery stops supplying power to the controller, so that the electric quantity of the storage battery is protected, the vehicle can be normally started when the controller is supplied with power next time, and the vehicle use feeling of a user is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle batteries, and in particular to a battery anti-feedback method, a charging system and a vehicle. Background Art

[0002] With the continuous development of science and technology, car owners' requirements for cars are constantly increasing, and at the same time, the number of intelligent functions of cars is increasing.

[0003] At present, many vehicles use power-saving strategies to avoid vehicle power feeding. If the vehicle battery is lower than value 1, it will enter power-saving level 1 and prompt the user that "the battery is low". When the battery power is lower than value 2, the vehicle will automatically go to the OFF position to avoid continuous power consumption of the vehicle. However, the vehicle battery often has false power, that is, the voltage measured by the battery sensor is 12V, but once a large load is driven, the battery voltage immediately drops to a very small value, which is not enough to drive any load, and there is only an empty voltage value. Even after all the controllers of the vehicle are dormant, the vehicle will still have dark current and the vehicle battery will still be consumed. If the user does not use the vehicle for many days after the vehicle is dormant, the vehicle battery is likely to be fed due to the existence of dark current. When the user needs to start the engine again, the vehicle cannot be started. In addition, not all vehicles have battery sensors. If the vehicle does not have a battery sensor, the power-saving strategy will fail. Summary of the invention

[0004] The present invention aims to provide a battery power feeding prevention method, a charging system and a vehicle, aiming to solve the technical problem of battery power feeding when there is no battery sensor.

[0005] To achieve the above object, the present invention proposes a battery power feeding prevention method, which is applied to a vehicle power supply system, and the battery power feeding prevention method comprises:

[0006] Get the available battery time in parking state;

[0007] Get the load power consumption time in parking state;

[0008] When the power consumption time of the load reaches the available time of the storage battery, the connection between the storage battery and the power load is disconnected.

[0009] In one embodiment, obtaining the available battery time in the parking state includes:

[0010] Obtaining the startup time of the engine;

[0011] When the startup time is longer than the preset charging time, it is determined that the battery is in a fully charged state;

[0012] When the storage battery is in a fully charged state, the usable time of the storage battery is determined according to the full charge amount of the storage battery.

[0013] In one embodiment, after the step of obtaining the load power usage time in the parking state, the following steps are included:

[0014] Detecting a vehicle gear position, wherein the vehicle gear position includes an ON gear and an ACC gear;

[0015] According to the available battery time in the parking state, a duration threshold value of the vehicle gear being in the ON gear and a duration threshold value of the vehicle gear being in the ACC gear are obtained;

[0016] Recording the duration for which the vehicle gear is maintained;

[0017] When the vehicle gear is in the ON gear and the duration of being in the ON gear reaches the duration threshold of the ON gear, or when the vehicle gear is in the ACC gear and the duration of being in the ACC gear reaches the duration threshold of the ACC gear, the user is prompted to start the engine.

[0018] In one embodiment, after prompting the user to start the engine, the method further includes:

[0019] When the prompt signal for prompting the user to start the engine is output according to a preset period, the number of prompts of the prompt signal is recorded, and the process returns to the step of obtaining the available battery time in the parking state;

[0020] When the reminder times reach a preset reminder times, the connection between the storage battery and the electrical load is disconnected.

[0021] In one embodiment, after the step of obtaining the available battery life in the parking state, the following steps are included:

[0022] Detecting whether the vehicle gear position is switched;

[0023] If yes, then record the first maintenance time corresponding to the gear position before switching;

[0024] Determining the remaining available power duration of the battery according to the available power duration of the battery and the first maintenance duration;

[0025] Record the second maintenance time corresponding to the gear position after the gear shift;

[0026] When the second maintenance time reaches the remaining available power time, the user is prompted to start the engine.

[0027] In one embodiment, after prompting the user to start the engine when the second maintenance time reaches the remaining available power time, the method further includes:

[0028] Recording the output duration of the prompt signal for prompting the user to start the engine;

[0029] Obtaining the emergency duration of the battery;

[0030] When the output time reaches the emergency time, controlling the vehicle to power off;

[0031] When the vehicle is powered off, the process returns to the step of detecting whether the vehicle gear position has been switched.

[0032] In one embodiment, when the load power consumption time reaches the battery available time, disconnecting the battery from the power load further includes:

[0033] When the load power consumption time reaches the battery available time, prompt the user to start the engine;

[0034] When it is not detected that the user starts the engine, detecting the vehicle door switch jump and searching for the presence of a key in the vehicle through radio frequency;

[0035] When a jump signal corresponding to the transition from any door being opened to all doors being closed is detected and there is no key in the vehicle, the vehicle is controlled to be locked, and the connection between the battery and the electrical load is disconnected.

[0036] In one embodiment, the power switch is mechanically connected to the door lock of the main driver's door;

[0037] After disconnecting the connection between the battery and the electrical load when a jump signal corresponding to the transition from any door being opened to all doors being closed is detected and there is no key in the vehicle, the method further includes:

[0038] When the vehicle door is opened by the mechanical key, the connection between the battery and the load is mechanically conducted through the mechanical key, and the user is prompted to start the generator to charge the battery.

[0039] In addition, to achieve the above object, the present invention also provides a battery charging system, the battery charging system is used to perform the battery anti-feeding method as described above, the battery charging system includes: a body controller, a power switch and a relay;

[0040] The power switch is connected in parallel with the relay, the power switch is mechanically connected to the door lock of the main driver's door, one end of the power switch is connected to the positive electrode of the battery, and the other end of the power switch is connected to the body controller and the power load;

[0041] The vehicle body controller is used to disconnect the battery from the power load when the power consumption time of the load reaches the available time of the battery.

[0042] In addition, to achieve the above object, the present invention also provides a vehicle, which includes the battery charging system as described above.

[0043] The present invention proposes a battery anti-power feeding method, which is applied to a vehicle power supply system, and the battery anti-power feeding method comprises: obtaining the available time of the battery in a parking state; obtaining the power consumption time of a load in a parking state; when the power consumption time of the load reaches the available time of the battery, disconnecting the connection between the battery and the power load; when the connection between the battery and the power load is disconnected, the battery will stop supplying power to a controller, thereby protecting the battery power, ensuring that the vehicle can start normally when power is supplied to the controller next time, and effectively improving the user's vehicle usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic flow chart of a first embodiment of a method for preventing power feeding of a storage battery according to an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of a first process of a second embodiment of a method for preventing power feeding of a storage battery provided in an embodiment of the present invention;

[0046] Figure 3 A second flow chart of a second embodiment of a method for preventing power feeding of a storage battery according to an embodiment of the present invention;

[0047] Figure 4 A third flow chart of a second embodiment of a method for preventing power feeding of a storage battery according to an embodiment of the present invention;

[0048] Figure 5 A fourth flow chart of a second embodiment of a method for preventing power feeding of a storage battery according to an embodiment of the present invention;

[0049] Figure 6 A fifth flow chart of a second embodiment of a method for preventing power feeding of a storage battery according to an embodiment of the present invention;

[0050] Figure 7 A schematic diagram of a flow chart of a third embodiment of a battery charging system according to an embodiment of the present invention;

[0051] Figure 8 This is a circuit diagram of a third embodiment of a battery charging system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0052] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present invention and are not used to limit the present invention.

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] Embodiment 1

[0057] Reference Figure 1 , Figure 1 This is a flow chart of a first embodiment of a method for preventing power feeding of a storage battery according to an embodiment of the present invention.

[0058] Reference Figure 1 The battery anti-feeding method is applied to a vehicle power supply system, and the battery anti-feeding method comprises:

[0059] Step S1: Obtain the available battery time in the parking state.

[0060] It should be noted that the vehicle power supply system is a key part to ensure the normal operation of the vehicle's electrical system. It is responsible for providing the necessary power for the vehicle's starting, ignition, lighting, electronic equipment and various sensors; the vehicle power supply system usually includes a battery, a generator, a voltage regulator, a starter and related wires and connectors.

[0061] It should be understood that the parking state refers to the state in which the car is kept stationary by a specific mechanism (such as manually tightening the handbrake or the electronic handbrake system) when it is not in operation; this state can prevent the vehicle from sliding on a slope or uneven ground and ensure that the vehicle is parked safely; in modern cars, the parking state may involve a variety of technologies, including traditional mechanical handbrake systems and more advanced electronic parking brake systems (EPB); the electronic parking brake system can be integrated with an automatic parking function (AUTO HOLD), which allows the vehicle to automatically maintain the braking state after the driver releases the brake pedal until the driver releases the brake by lightly stepping on the accelerator or manually operating it.

[0062] It should be noted that the battery life refers to the time that the battery can continue to supply power when fully charged. This time depends on the rated capacity of the battery and the load power. The rated capacity of the battery is usually expressed in ampere-hours (Ah), while the load power is expressed in watts (W) or amperes (A). For example, a 12V 7Ah battery can theoretically supply power for 7 hours (7Ah / 1A=7h) if it is connected to a device with a working current of 1A.

[0063] Step S2: Obtain the load power consumption time in the parking state.

[0064] It should be noted that the load power usage time refers to the length of time that the load equipment continues to work in the parking state; this concept is very important in the fields of power system analysis, battery power time calculation, and energy management. For example, in the power system, the load power usage time can help analyze the load characteristics of the system, predict energy demand, optimize power resource allocation, and improve the stability and efficiency of the system; in battery-powered application scenarios, the load power usage time involves battery capacity planning and management to ensure that sufficient working time can be maintained in the absence of external power supply; in actual applications, the calculation of load power usage time may need to consider multiple factors, including the power characteristics of the load, working mode, environmental conditions, battery health status and discharge characteristics, etc. By accurately calculating the load power usage time, better energy planning and risk management can be carried out to ensure the continuity of key operations and services.

[0065] Step S3: When the power consumption time of the load reaches the available time of the battery, disconnect the battery from the power load.

[0066] It should be understood that when the load power consumption duration reaches the battery available duration, it does not mean that the load has exhausted the power in the battery, but rather that a portion of the battery power is reserved under artificial settings to ensure that the battery will not be powered when the vehicle is started next time.

[0067] It should be noted that disconnecting the connection between the battery and the electrical load disconnects the relay and the power switch. When the relay and the power switch are disconnected, the battery will stop supplying power to the body controller, thereby protecting the battery power and ensuring that the vehicle can start normally the next time power is supplied to the body controller.

[0068] It should be understood that the power switch refers to a device used to control the power input and output in a circuit. It can turn the power on or off in the circuit to power on and off electrical appliances, equipment or systems. In the present invention, it mainly refers to a switch that uses a battery to power the vehicle body controller; and it is connected in parallel with a relay to jointly control the battery to power the vehicle controller.

[0069] It should be noted that the body controller (Body Control Module, BCM for short) is an electronic control unit (ECU) in a car for controlling the body electrical system. It is an important part of the car and is responsible for managing car functions such as lighting, windows, door locks, seat control, etc., and communicates with other ECUs in the vehicle through various communication protocols (such as CAN, LIN or FlexRay); the main task of the body controller is to simplify operations and reduce manual operations of passengers to enhance the safety, comfort and convenience of the car.

[0070] This embodiment proposes a battery power supply prevention method, which is applied to a vehicle power supply system, and the battery power supply prevention method includes: obtaining the available time of the battery in the parking state; obtaining the power consumption time of the load in the parking state; when the power consumption time of the load reaches the available time of the battery, disconnecting the connection between the battery and the power load; when the connection between the battery and the power load is disconnected, the battery will stop supplying power to the body controller, thereby protecting the battery power, ensuring that the vehicle can start normally when the body controller is powered next time, and effectively improving the user's vehicle usage experience.

[0071] Embodiment 2

[0072] Reference Figure 2 , Figure 2 This is a schematic diagram of the first process of the second embodiment of the battery power supply prevention method proposed in one embodiment of the present invention.

[0073] Reference Figure 2 The obtaining of the available battery time in the parking state includes:

[0074] Step S101: Obtain the startup duration of the engine.

[0075] It should be understood that the starting time refers to the time required from turning the ignition switch to the start position to the time when the engine is able to idle on its own when starting the engine. This time should be within the manufacturer's recommended range to ensure that the engine can start smoothly and reduce damage to the starting system. For example, if the starting time is too long, it may cause excessive discharge of the battery or overheating of the starter motor.

[0076] Step S102: When the startup time is longer than the preset charging time, it is determined that the battery is fully charged.

[0077] It should be noted that the preset charging time refers to the charging end time set in advance during the charging process according to the battery status and user needs; this setting can be a fixed time length or a dynamic adjustment based on the battery charging status; the preset charging time is to ensure that the battery can be charged to a sufficient amount of electricity within the time required by the user, while avoiding battery damage or energy waste caused by overcharging. According to Example 1, the preset charging time is usually set to the time that the battery can continuously supply power when fully charged.

[0078] Step S103: when the battery is in a fully charged state, determining the usable time of the battery according to the fully charged power of the battery.

[0079] It should be understood that the full charge of the battery and the usable time of the battery correspond to each other. The full charge of the battery usually refers to the maximum amount of electrical energy storage that the battery can achieve under ideal conditions, and this amount is usually expressed in ampere-hours (Ah) or kilowatt-hours (kWh); and the usable time of the battery refers to the length of time the battery can continuously supply power under specific discharge conditions; there is a direct correspondence between the two, that is, the greater the full charge of the battery, the longer its usable time under the same discharge conditions.

[0080] Reference Figure 3 , Figure 3 This is a second flow chart of a second embodiment of a battery power feeding prevention method according to an embodiment of the present invention.

[0081] Reference Figure 3 , after the step of obtaining the load power consumption time in the parking state, it includes:

[0082] Step S104: Detect the vehicle gear position, which includes the ON gear and the ACC gear.

[0083] It should be understood that the vehicle gear position usually has four gear positions: OFF, ACC, ON, and START, and each gear position has its specific function and purpose:

[0084] OFF gear: It is the lock gear. In this gear, the vehicle's circuit is completely shut down, the steering wheel is locked, and only a few devices such as the anti-theft system and the small lights inside the car can work. This gear is suitable for parking, locking the car and cutting off the power.

[0085] ACC gear: Accessory power-on gear. In this gear, some electrical equipment of the vehicle can work, such as the radio, lights, etc., but does not include high-power equipment such as air conditioning. This gear is suitable for using certain functions of the vehicle without starting the engine;

[0086] ON gear: In this gear, all electrical equipment of the vehicle can work, including high-power equipment such as air conditioners. This gear is suitable for self-testing and preheating before starting the engine;

[0087] START gear: START gear, that is, the starting gear. In this gear, the vehicle's starter circuit is connected, the engine will start and start running. After successful starting, the key will automatically return to the ON gear.

[0088] The present invention mainly relates to the switching among the OFF gear, the ACC gear and the ON gear.

[0089] Step S105: obtaining a duration threshold value of the vehicle gear being in the ON gear and a duration threshold value of the vehicle gear being in the ACC gear according to the battery available time in the parking state.

[0090] It should be noted that when the vehicle gear is in the ON position, all electrical systems of the vehicle are powered on, including lighting, entertainment system, power auxiliary system, etc., which will result in higher current consumption, so a shorter time threshold is required to avoid battery exhaustion. The setting of the threshold should take into account the health status and remaining power of the battery, as well as the typical usage time of the vehicle in the ON position; for example, if the battery capacity is 60Ah, and under normal use conditions, the average current consumption of the vehicle in the ON position is 5A, the threshold may be set to allow the vehicle to run in the ON position for no more than 2 hours (60Ah / 5A=12 hours, leaving enough margin to prevent accidents).

[0091] It should be understood that the ACC gear is generally used to provide power to some basic electrical systems after the vehicle is turned off, such as the on-board infotainment system and vehicle lighting; compared with the ON gear, the current consumption of the ACC gear is lower, so the vehicle can be allowed to run in this gear for a longer time; the threshold setting should be based on the average current consumption of the ACC gear and the capacity of the battery; if the average current consumption of the ACC gear is 1A and the capacity of the battery is 60Ah, the threshold may be set to allow the vehicle to run in the ACC gear for at least 24 hours (60Ah / 1A=60 hours).

[0092] Step S106: Record the duration of maintaining the vehicle gear position.

[0093] It should be noted that the vehicle gear may stay in the ACC gear or the ON gear, so the maintenance time at this time may be the maintenance time when the vehicle gear is in the ACC gear or the maintenance time when the vehicle gear is in the ON gear.

[0094] Step S107: When the vehicle gear is in the ON gear and the duration of being in the ON gear reaches the duration threshold of the ON gear, or when the vehicle gear is in the ACC gear and the duration of being in the ACC gear reaches the duration threshold of the ACC gear, prompt the user to start the engine.

[0095] It should be understood that no matter whether the vehicle is in ACC gear or ON gear, once the maintenance time exceeds the corresponding duration threshold, the user will be prompted to start the engine. At this time, the specific operation of prompting the user to start the engine is: the instrument displays "Battery power is low, please start the engine as soon as possible", and the buzzer sounds intermittently.

[0096] Reference Figure 4 , Figure 4 This is a third flow chart of the second embodiment of the battery power feeding prevention method proposed in one embodiment of the present invention.

[0097] Reference Figure 4 After prompting the user to start the engine, the method further includes:

[0098] Step S108: when the prompt signal for prompting the user to start the engine is output according to a preset period, the number of prompts of the prompt signal is recorded, and the process returns to the step of obtaining the available battery time in the parking state;

[0099] Step S109: When the reminder times reach a preset reminder times, disconnecting the battery from the power load.

[0100] It should be understood that the number of prompts of the prompt signal refers to the number of times the buzzer sounds intermittently when the instrument displays "Battery power is low, please start the engine as soon as possible"; the preset number of prompts is also set by professional technicians to avoid vehicle power outage due to excessive prompts.

[0101] Reference Figure 5 , Figure 5 This is a fourth flow chart of the second embodiment of the battery power feeding prevention method proposed in one embodiment of the present invention.

[0102] Reference Figure 5 , after the step of obtaining the available battery life in the parking state, the method further comprises:

[0103] Step S110: Detecting whether the vehicle gear position is switched;

[0104] Step S111: If yes, then record the first maintenance time corresponding to the previous gear position;

[0105] Step S112: determining the remaining available power duration of the battery according to the available battery duration and the first maintenance duration.

[0106] It should be noted that the above-mentioned first maintenance time may be the maintenance time when the vehicle gear is in the ACC gear, or it may be the maintenance time when the vehicle gear is in the ON gear; when the battery is fully charged, the maintenance time of the ON gear and the maintenance time of the ACC gear are fixed, so when the maintenance time of the ON gear is longer, the maintenance time in the ACC gear is correspondingly shortened; similarly, when the maintenance time of the ACC gear is longer, the maintenance time in the ON gear is correspondingly shortened.

[0107] It should be understood that the remaining usable power duration of the battery has different remaining usable power durations when the vehicle is in different gears. For example, if the threshold is set to allow the vehicle to run in the ON gear for no more than 2 hours, if the vehicle gear is in the ON gear and the first maintenance time is 1 hour, the remaining usable power duration of the battery is 1 hour; if the threshold is set to allow the vehicle to run in the ACC gear for no more than 12 hours, if the vehicle gear is in the ACC gear and the first maintenance time is 6 hours, the remaining usable power duration of the battery is 6 hours. Similarly, when switching between the two gears, there are remaining usable power durations of the battery for the corresponding gears.

[0108] Step S113: Record the second maintenance time length corresponding to the gear position after the gear shift.

[0109] It should be noted that the second maintenance time is updated in real time according to information such as the engine startup time, the ACC gear maintenance time, and the ON gear maintenance time, and the specific calculation method is:

[0110] First, collect or estimate the fuel consumption rate (liters / hour or kilowatt-hour / hour) of the engine under different working conditions and the energy consumption characteristics of the vehicle when the ACC gear is activated; then, calculate the total amount of fuel consumed during this period based on the fuel consumption rate of the engine and the ON gear maintenance time; then, calculate the total amount of fuel consumed during this period based on the fuel consumption rate under the ACC gear and the ACC gear maintenance time; finally, add the amount of fuel consumed for the engine ON gear maintenance time and the amount of fuel consumed for the ACC gear maintenance time to obtain the total fuel consumption; then, divide the total fuel consumption by the total fuel capacity or remaining fuel of the vehicle to obtain the second maintenance time.

[0111] Step S114: When the second maintenance time reaches the remaining available power time, prompt the user to start the engine.

[0112] It should be understood that the specific operation to prompt the user to start the engine at this time is: the instrument flashes "Please start the engine as soon as possible, otherwise the battery power is too low to start the generator", and the buzzer continues to sound to reinforce the user's reminder.

[0113] Reference Figure 6 , Figure 6 This is a fifth flow chart of the second embodiment of the battery power feeding prevention method proposed in one embodiment of the present invention.

[0114] Reference Figure 6 After prompting the user to start the engine, the method further includes:

[0115] Step S115: recording the output duration of the prompt signal for prompting the user to start the engine;

[0116] Step S116: Obtain the emergency duration of the battery;

[0117] Step S117: When the output time reaches the emergency time, the vehicle is controlled to be powered off;

[0118] Step S118: When the vehicle is powered off, return to the step of detecting whether the vehicle gear position has been switched.

[0119] It should be noted that the output duration of the prompt signal is as above: the instrument flashes "Please start the engine as soon as possible, otherwise the battery power is too low to start the generator", and the buzzer continues to sound, reinforcing the user's operation duration; the emergency time is set by professional technicians to avoid vehicle power feeding.

[0120] It should be understood that the vehicle powering off refers to the vehicle gear being switched to the OFF gear.

[0121] In this embodiment, the available time of the battery is determined by obtaining the engine startup time, and then the duration threshold of the vehicle gear being in the ON gear and the duration threshold of the vehicle gear being in the ACC gear are obtained based on the available battery time. The user is prompted with different intensities according to the different maintenance times in different vehicle gears. Finally, the emergency time and the preset number of prompts are set, and the vehicle is powered off when the emergency time is reached. When the preset number of prompts is reached, the connection between the battery and the power load is disconnected to avoid vehicle power feeding, thereby protecting the battery power and ensuring that the vehicle can start normally when the body controller is powered next time, effectively improving the user's vehicle usage experience.

[0122] Embodiment 3

[0123] Reference Figure 7 , Figure 7This is a flow chart of a third embodiment of a battery charging system according to an embodiment of the present invention.

[0124] Reference Figure 7 , when the load power consumption time reaches the battery available time, disconnecting the battery from the power load, and further comprising

[0125] Step S119: When the load power consumption time reaches the battery available time, prompt the user to start the engine;

[0126] Step S120: When it is not detected that the user starts the engine, detecting the vehicle door switch jump and searching for the key in the vehicle through radio frequency;

[0127] Step S121: When a jump signal corresponding to the transition from any door being opened to all doors being closed is detected and there is no key in the vehicle, the vehicle is locked and the connection between the battery and the electrical load is disconnected.

[0128] It should be noted that real-time detection is performed to see whether the transition from any door being opened to all doors being closed is detected. If so, it is determined whether there is no driver in the main driving seat. If so, the key in the car is searched through the radio frequency key search function. If there is no key in the car, it means that the user has closed the door and left the vehicle and there is no key in the car. At this time, the vehicle will be locked to prevent the battery from being consumed to the point where the engine cannot be started after the owner leaves (even if there are other users in the non-main driving seat in the car, the user can unlock and open the door through the mechanical structure inside the car).

[0129] It should be understood that the power supply switch is mechanically connected to the door lock of the main driver's door. When the car door is opened by the mechanical key, the connection between the battery and the load is mechanically conducted through the mechanical key, and the user is prompted to start the generator to charge the battery. The power supply switch is associated with the door lock of the main driver's door. When the door lock of the main driver's door is unlocked, the power supply switch is closed. When the door lock of the main driver's door is locked, the power supply switch is disconnected.

[0130] In addition, the present invention also proposes a battery charging system, which is used to execute the battery anti-power feeding method as described above. Since the battery charging system adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0131] Reference Figure 8 , Figure 8 This is a circuit diagram of a third embodiment of a battery charging system according to an embodiment of the present invention.

[0132] Reference Figure 8, the battery charging system includes: a body controller, a power switch and a relay;

[0133] The power switch is connected in parallel with the relay, the power switch is mechanically connected to the door lock of the main driver's door, one end of the power switch is connected to the positive electrode of the battery, and the other end of the power switch is connected to the body controller and the power load;

[0134] The vehicle body controller is used to disconnect the battery from the power load when the power consumption time of the load reaches the available time of the battery.

[0135] It should be noted that the battery charging system is used in the case where there is no battery sensor, but a battery sensor is connected in parallel at both ends of the battery. The method and the system are also applicable, that is, the above-mentioned detection of various times can be directly replaced by detecting the current power of the battery.

[0136] In this embodiment, the battery charging system includes: a body controller, a power switch and a relay; the power switch is connected in parallel with the relay, the power switch is mechanically connected to the door lock of the main driver's door, one end of the power switch is connected to the positive electrode of the battery, and the other end of the power switch is connected to the body controller and the power load; the body controller is used to disconnect the battery and the power load when the power consumption time of the load reaches the available time of the battery; when it is detected that the user leaves and there is no key in the car, the vehicle is locked, that is, the connection between the battery and the power load is disconnected, so as to avoid the battery being consumed to the point where the engine cannot be started after the owner leaves (even if there are other users in the non-main driving position in the car, the user can unlock and open the door through the mechanical structure in the car), so as to ensure that the vehicle can start normally when the body controller is powered next time, effectively improving the user's vehicle usage experience.

[0137] In addition, the present invention also proposes a vehicle, which includes the battery charging system as described above. Since the vehicle adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0138] The above are only some embodiments of the present invention, and the scope of implementation of the present invention is not limited thereto. Any equivalent structure or equivalent process transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. A battery anti-feedback method, characterized in that: The battery power feeding prevention method is applied to a vehicle power supply system, and the battery power feeding prevention method comprises: Get the available battery time in parking state; Get the load power consumption time in parking state; When the power consumption time of the load reaches the available time of the storage battery, the connection between the storage battery and the power load is disconnected.

2. The battery anti-power-feeding method according to claim 1, characterized in that: The obtaining of the available battery time in the parking state includes: Obtaining the startup time of the engine; When the startup time is longer than the preset charging time, it is determined that the battery is in a fully charged state; When the storage battery is in a fully charged state, the usable time of the storage battery is determined according to the full charge amount of the storage battery.

3. The battery anti-feedback method according to claim 1, characterized in that: After the step of obtaining the load power consumption time in the parking state, the method includes: Detecting a vehicle gear position, wherein the vehicle gear position includes an ON gear and an ACC gear; According to the available battery time in the parking state, a duration threshold value of the vehicle gear being in the ON gear and a duration threshold value of the vehicle gear being in the ACC gear are obtained; Recording the duration for which the vehicle gear is maintained; When the vehicle gear is in the ON gear and the duration of being in the ON gear reaches the duration threshold of the ON gear, or when the vehicle gear is in the ACC gear and the duration of being in the ACC gear reaches the duration threshold of the ACC gear, the user is prompted to start the engine.

4. The battery anti-power-feeding method according to claim 3, characterized in that: After the user is prompted to start the engine, the method further includes: When the prompt signal for prompting the user to start the engine is output according to a preset period, the number of prompts of the prompt signal is recorded, and the process returns to the step of obtaining the available battery time in the parking state; When the reminder times reach a preset reminder times, the connection between the storage battery and the electrical load is disconnected.

5. The battery anti-power-feeding method according to claim 1, characterized in that: After the step of obtaining the available battery life in the parking state, the method further includes: Detecting whether the vehicle gear position is switched; If yes, then record the first maintenance time corresponding to the gear position before switching; Determining the remaining available power duration of the battery according to the available power duration of the battery and the first maintenance duration; Record the second maintenance time corresponding to the gear position after the gear shift; When the second maintenance time reaches the remaining available power time, the user is prompted to start the engine.

6. The battery anti-power-feeding method according to claim 5, characterized in that: After prompting the user to start the engine when the second maintenance time reaches the remaining available power time, the method further includes: Recording the output duration of the prompt signal for prompting the user to start the engine; Obtaining the emergency duration of the battery; When the output time reaches the emergency time, controlling the vehicle to power off; When the vehicle is powered off, the process returns to the step of detecting whether the vehicle gear position has been switched.

7. The battery anti-power-feeding method according to claim 5, characterized in that: When the load power consumption time reaches the battery available time, disconnecting the battery from the power load also includes: When the load power consumption time reaches the battery available time, prompt the user to start the engine; When it is not detected that the user starts the engine, detecting the vehicle door switch jump and searching for the presence of a key in the vehicle through radio frequency; When a jump signal corresponding to the transition from any door being opened to all doors being closed is detected and there is no key in the vehicle, the vehicle is controlled to be locked, and the connection between the battery and the electrical load is disconnected.

8. The battery anti-power-feeding method according to claim 7, characterized in that: The power switch is mechanically connected to the door lock of the main driver's door; After disconnecting the connection between the battery and the electrical load when a jump signal corresponding to the transition from any door being opened to all doors being closed is detected and there is no key in the vehicle, the method further includes: When the vehicle door is opened by the mechanical key, the connection between the battery and the load is mechanically conducted through the mechanical key, and the user is prompted to start the generator to charge the battery.

9. A battery charging system, characterized in that: The battery charging system is used to perform the battery anti-feeding method as claimed in claims 1 to 8, and the battery charging system includes: a body controller, a power switch and a relay; The power switch is connected in parallel with the relay, the power switch is mechanically connected to the door lock of the main driver's door, one end of the power switch is connected to the positive electrode of the battery, and the other end of the power switch is connected to the body controller and the power load; The vehicle body controller is used to disconnect the battery from the power load when the power consumption time of the load reaches the available time of the battery.

10. A vehicle, characterized in that: The vehicle includes the battery charging system of claim 9.

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