Electric vehicle (EV) type storage battery charging method, system and equipment

Abstract

The invention discloses an EV type storage battery charging method, system and equipment, and the method comprises the steps: judging the current state mode of a vehicle, recognizing the current states of a vehicle power supply and a front cabin cover, and synchronously activating the active awakening potential energy of a storage battery sensor; whether the vehicle storage battery charge state and the high-voltage battery pack charge state are lower than a threshold value or not is detected, and meanwhile whether the vehicle is in a charging state or not is determined; and according to the threshold value detection result and the charging state confirmation result, a low-voltage electricity supplementing request is sent to the vehicle, and electricity supplementing is conducted on the vehicle. The method not only considers the traditional index of the voltage of the storage battery, but also combines the detection of the charge state of the storage battery and the charge state of the high-voltage battery pack, and the multi-dimensional judgment mode can more comprehensively reflect the actual electric quantity and the charging capacity of the storage battery, thereby improving the accuracy of a power supply decision, and improving the power supply efficiency. And misjudgment possibly caused by judgment only depending on the voltage of the storage battery is effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle electric balancing, and specifically relates to a method, system and equipment for replenishing battery power in an EV vehicle. Background Art

[0002] With the transformation of the global energy structure and the improvement of environmental awareness, new energy vehicles are gradually becoming a new trend in the development of the automotive industry with their clean, efficient and sustainable characteristics. New energy vehicles, especially electric vehicles (EVs), play an important role in reducing environmental pollution and easing energy pressure with their advantages such as zero emissions, low noise and high energy efficiency. However, new energy vehicles also face many technical challenges in technological innovation and practical application, among which battery management and optimization is a key link.

[0003] Traditional fuel vehicles rely on a starter to start the engine, so a large capacity battery is needed to provide instantaneous high current. However, new energy vehicles, especially pure electric vehicles, have a power system composed of an electric motor and a power battery. The vehicle can be driven directly by the electric motor without a starter, which makes new energy vehicles more flexible in battery selection and can use relatively small capacity batteries. This design effectively reduces vehicle weight and improves energy efficiency in the early stage.

[0004] However, with the continuous development of new energy vehicle technology and the increasing diversification of user needs, intelligent functions have been widely used in new energy vehicles. From automatic driving assistance systems, in-vehicle entertainment systems to remote monitoring and diagnostic systems, these intelligent functions all rely on power supply. Compared with traditional fuel vehicles, the number of power controllers in new energy vehicles has increased significantly, which puts higher requirements on the power supply capacity and stability of batteries.

[0005] In actual applications, during the transportation and shutdown of new energy vehicles, the battery needs to maintain sufficient power to ensure that the vehicle can start normally and all intelligent functions can operate normally. However, since the battery type selected for new energy vehicles is often designed to meet daily driving needs, its ability to support long-term transportation cycles is limited. Especially when the vehicle is parked or transported for a long time, the battery power may gradually decrease or even run out, resulting in the inability to start the vehicle or the failure of intelligent functions.

[0006] In order to solve this problem, the existing technology usually adopts a charging strategy based on battery voltage. When the battery voltage is lower than a certain threshold, the system will trigger the charging procedure to charge the battery through an external power supply or the vehicle's own power battery. However, this single charging strategy has obvious limitations. The battery voltage is only an indicator of the battery status. It cannot fully reflect the actual battery power and charging capacity. Relying solely on the battery voltage to determine whether charging is needed is prone to misjudgment, resulting in untimely or excessive charging, affecting the battery's service life and performance. Summary of the invention

[0007] The purpose of the present invention is to provide an EV vehicle battery charging method, system and device to solve the technical defects in the prior art that the charging strategy based on battery voltage is easily misjudged, resulting in untimely or excessive charging, affecting the service life and performance of the battery.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, a method for charging an EV battery is provided, comprising: While determining the current state mode of the vehicle, identifying the current state of the vehicle power supply and the front hatch, and synchronously activating the battery sensor to actively wake up the potential energy; While checking whether the vehicle battery charge state and the high-voltage battery pack charge state are lower than the threshold, confirm whether the vehicle is in a charging state; Relying on the threshold detection result and the charging state confirmation result, a low-voltage power replenishment request is sent to the vehicle, and the vehicle is recharged.

[0009] Furthermore, while determining the current state mode of the vehicle, the current state of the vehicle power supply and the front hatch are identified, and the battery sensor is synchronously activated to actively wake up the potential energy, specifically including: Determining whether the vehicle is currently in factory mode, transport mode, or user mode; wherein the factory mode is when the vehicle electrical system is in an initialization and safety check state; The transport mode is that the electronic components in the current vehicle electrical system that are not in operation are in a dormant state; The user mode is a state in which all electronic components in the vehicle electrical system are normally turned on and running after the driver enters the vehicle cab; When the current state mode of the vehicle is judged as the factory mode, the current state of the vehicle power supply and the front hatch is not identified, and the battery sensor is not activated to actively wake up the potential energy; When the vehicle's current state mode is judged to be transport mode or user mode, and at the same time it is recognized that the vehicle power is turned off and the front hood is locked, the battery sensor is synchronously activated to actively wake up the potential energy.

[0010] Furthermore, while detecting whether the state of charge of the vehicle battery and the state of charge of the high-voltage battery pack are lower than a threshold value, confirming whether the vehicle is in a charging state specifically includes: Presetting the vehicle battery state of charge threshold and the high-voltage battery pack state of charge threshold; Detect whether the vehicle's current battery state of charge is lower than the preset vehicle battery state of charge threshold, detect whether the vehicle's current high-voltage battery pack state of charge threshold is greater than the preset high-voltage battery pack state of charge threshold, and simultaneously confirm whether the current vehicle is in a charging state.

[0011] Further, the method of sending a low-voltage power replenishment request to the vehicle and replenishing power for the vehicle based on the threshold detection result and the charging state confirmation result specifically includes: When it is detected that the current battery state of charge of the vehicle is not lower than the preset vehicle battery state of charge threshold, the low-voltage charging request is stopped to the vehicle; When it is detected that the current state of charge threshold of the high-voltage battery pack of the vehicle is not greater than the preset state of charge threshold of the high-voltage battery pack, the low-voltage charging request is stopped from being sent to the vehicle; When it is detected that the current vehicle is in charging state, the low-voltage charging request is stopped; When it is detected that the vehicle's current battery state of charge is lower than the preset vehicle battery state of charge threshold, the vehicle's current high-voltage battery pack state of charge threshold is greater than the preset high-voltage battery pack state of charge threshold, and the vehicle is not in a charging state, a low-voltage charging request is sent to the vehicle and the vehicle is charged.

[0012] Further, sending a low-voltage power replenishment request to the vehicle and replenishing power for the vehicle specifically includes: When a low-voltage charging request is sent to the vehicle, if the low-voltage battery management system in the vehicle does not receive a response or the response times out within the preset time window, the current low-voltage charging request is canceled, the low-voltage battery status is continuously monitored, and the charging failure fault flag is stored; When a low-voltage charging request is sent to the vehicle, if the low-voltage battery management system in the vehicle responds within the preset time window and does not time out, it enters the intelligent charging mode and charges the low-voltage battery in the vehicle.

[0013] Furthermore, the storage of the power replenishment failure fault flag bit specifically includes: Based on vehicle design and low-voltage battery management strategy, a threshold for the number of low-voltage battery replenishment request failures is preset; Detecting whether the number of failures of the supplementary power request exceeds a preset threshold of the number of failures of the low-voltage supplementary power request; When the number of power replenishment request failures exceeds the preset low-voltage power replenishment request failure threshold, the current power replenishment request failure number is cleared to zero, and a power replenishment failure fault flag is stored in a non-volatile memory; End the current charging request process and determine whether to re-initiate the charging request based on the current state of the vehicle and the health of the low-voltage battery, or enter the fault diagnosis and repair process; When the number of power replenishment request failures does not exceed the preset low-voltage power replenishment request failure number threshold, the relationship between the power replenishment number and the threshold is evaluated, and the power replenishment process is executed again.

[0014] In a second aspect, a battery charging system for an EV vehicle is provided, comprising: A judgment module, used to judge the current state mode of the vehicle; An identification module, used to identify the current status of the vehicle power source and the front hatch; An activation module is used to activate the battery sensor to actively wake up the potential energy; A detection module, used to detect whether the state of charge of the vehicle battery and the state of charge of the high-voltage battery pack are lower than a threshold value, and to confirm whether the vehicle is in a charging state; The charging module is used to send a low-voltage charging request to the vehicle and to charge the vehicle.

[0015] In a third aspect, a mobile terminal is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the EV vehicle battery charging method as described above when executing the computer program.

[0016] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned EV vehicle battery charging method are implemented.

[0017] In a fifth aspect, a computer program product is provided, comprising computer instructions, wherein the computer instructions instruct a computing device to execute operations corresponding to the EV vehicle battery charging method as described above.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This method not only takes into account the traditional indicator of battery voltage, but also combines the detection of battery state of charge and high-voltage battery pack state of charge. This multi-dimensional judgment method can more comprehensively reflect the actual power and charging capacity of the battery, thereby improving the accuracy of the charging decision; secondly, by synchronously activating the battery sensor to actively awaken the potential energy, the battery status information can be obtained in real time and accurately, providing reliable data support for the charging decision; in addition, relying on the threshold detection results and the charging status confirmation results to send a low-voltage charging request can effectively avoid the misjudgment that may occur when relying solely on the battery voltage judgment.

[0019] 2. By judging the different status modes of the vehicle and automatically adjusting the wake-up state of the battery sensor accordingly, the intelligence and adaptability of the method are reflected.

[0020] 3. By presetting the vehicle battery state of charge threshold and the high-voltage battery pack state of charge threshold, it is possible to clearly determine whether the power levels of the battery and the high-voltage battery pack are within the range that requires recharging, which helps to improve the accuracy of recharging decisions and avoid untimely or excessive recharging due to ambiguous power judgment.

[0021] 4. When it is detected that the vehicle's current battery charge state is not lower than the preset threshold, or the high-voltage battery pack charge state is not greater than the preset threshold, or the vehicle is in the charging state, it will stop sending low-voltage charging requests, effectively avoiding excessive charging and the energy waste that may be caused.

[0022] 5. By setting a preset time window and monitoring the response of the low-voltage battery management system within this time, it is possible to promptly detect whether the charging request is correctly processed; if the response times out, the current charging request is canceled, which avoids the inability to complete or continue to attempt the charging operation due to system failure or communication problems, thereby improving the reliability of the charging system.

[0023] 6. When the number of power replenishment request failures exceeds the preset threshold, the current number of power replenishment request failures is cleared and the power replenishment failure fault flag is stored in the non-volatile memory. This not only records the occurrence of the fault, but also avoids misjudgment or overreaction caused by the accumulation of too many power replenishment request failures.

[0024] 7. Decide whether to re-initiate a charging request based on the current state of the vehicle and the health of the low-voltage battery. This decision-making mechanism takes into account the actual needs of the vehicle, avoids the waste of resources or battery damage that may be caused by blind charging, and improves the rationality and effectiveness of the charging operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A flow chart of the EV battery charging method provided by the present invention; Figure 2 This is a schematic diagram of the EV vehicle battery charging system provided by the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] With the transformation of the global energy structure and the improvement of environmental awareness, new energy vehicles are gradually becoming a new trend in the development of the automotive industry with their clean, efficient and sustainable characteristics. New energy vehicles, especially electric vehicles (EVs), play an important role in reducing environmental pollution and easing energy pressure with their advantages such as zero emissions, low noise and high energy efficiency. However, new energy vehicles also face many technical challenges in technological innovation and practical application, among which battery management and optimization is a key link.

[0034] Traditional fuel vehicles rely on a starter to start the engine, so a large capacity battery is needed to provide instantaneous high current. However, new energy vehicles, especially pure electric vehicles, have a power system composed of an electric motor and a power battery. The vehicle can be driven directly by the electric motor without a starter, which makes new energy vehicles more flexible in battery selection and can use relatively small capacity batteries. This design effectively reduces vehicle weight and improves energy efficiency in the early stage.

[0035] However, with the continuous development of new energy vehicle technology and the increasing diversification of user needs, intelligent functions have been widely used in new energy vehicles. From automatic driving assistance systems, in-vehicle entertainment systems to remote monitoring and diagnostic systems, these intelligent functions all rely on power supply. Compared with traditional fuel vehicles, the number of power controllers in new energy vehicles has increased significantly, which puts higher requirements on the power supply capacity and stability of batteries.

[0036] In actual applications, during the transportation and shutdown of new energy vehicles, the battery needs to maintain sufficient power to ensure that the vehicle can start normally and all intelligent functions can operate normally. However, since the battery type selected for new energy vehicles is often designed to meet daily driving needs, its ability to support long-term transportation cycles is limited. Especially when the vehicle is parked or transported for a long time, the battery power may gradually decrease or even run out, resulting in the inability to start the vehicle or the failure of intelligent functions.

[0037] In order to solve this problem, the existing technology usually adopts a charging strategy based on battery voltage. When the battery voltage is lower than a certain threshold, the system will trigger the charging procedure to charge the battery through an external power supply or the vehicle's own power battery. However, this single charging strategy has obvious limitations. The battery voltage is only an indicator of the battery status. It cannot fully reflect the actual battery power and charging capacity. Relying solely on the battery voltage to determine whether charging is needed is prone to misjudgment, resulting in untimely or excessive charging, affecting the battery's service life and performance.

[0038] In order to solve the above technical defects, the inventor provides a method, system and device for charging the battery of an EV vehicle.

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings: In a first aspect, an embodiment of the present invention provides a method for charging an EV battery. Figure 1 As shown, including: S101. While judging the current state mode of the vehicle, identify the current state of the vehicle power supply and the front hood, and synchronously activate the active wake-up potential of the battery sensor; illustratively, first determine whether the vehicle is currently in factory mode, transportation mode or user mode; wherein, the factory mode is when the vehicle electrical system is in initialization and safety check state; the transportation mode is when the electronic components that are not running in the current vehicle electrical system are in sleep state; the user mode is when all the electronic components in the vehicle electrical system are normally turned on and running after the driver enters the vehicle cab; when the current state mode judgment result of the vehicle is factory mode, the current state of the vehicle power supply and the front hood is not identified, and the active wake-up potential of the battery sensor is not activated; when the current state mode judgment result of the vehicle is transportation mode or user mode, and it is identified that the vehicle power supply is turned off and the front hood is in a locked state, the active wake-up potential of the battery sensor is synchronously activated.

[0040] During the above steps, by determining whether the vehicle is currently in factory mode, transport mode or user mode, corresponding operation strategies can be adopted according to different modes, which helps to ensure the safety and stability of the vehicle's electrical system in different states. In factory mode, since the vehicle's electrical system is in the initialization and safety check state, the vehicle power supply and front hood status are not identified at this time, and the battery sensor is not activated to actively wake up the potential energy, thereby avoiding unnecessary operations when the vehicle is not fully ready, and ensuring safety and stability in the factory environment.

[0041] In transport mode, the electronic components in the vehicle's electrical system that are not running are in a dormant state to reduce energy consumption and extend the battery's service life. At this time, if the vehicle power is turned off and the front hatch is locked, the battery sensor is activated to actively wake up the potential energy, which can ensure real-time monitoring of the battery status when needed, while avoiding unnecessary energy consumption.

[0042] In user mode, all electronic components are turned on and running normally. At this time, the battery sensor is activated to actively awaken the potential energy, so that the status of the battery can be grasped in real time to ensure that the battery has sufficient power during normal driving of the vehicle, thereby optimizing energy management and improving the reliability and performance of the vehicle.

[0043] By executing the above steps, the execution process of the method can be automatically adjusted according to the actual use of the vehicle, thereby improving the flexibility and convenience of the method operation; secondly, by synchronously activating the battery sensor to actively awaken the potential energy, the battery status information can be obtained in real time, providing accurate data support for subsequent power replenishment decisions, further enhancing the level of intelligence. In addition, the method can ensure the normal operation of the battery in different states of the vehicle, thereby avoiding the situation where the vehicle cannot be started or the intelligent function fails due to insufficient battery power, and improving the user's driving experience.

[0044] S102. While detecting whether the vehicle battery state of charge and the high-voltage battery pack state of charge are lower than the threshold, confirm whether the vehicle is in a charging state; illustratively, before performing all the detection steps, first preset the vehicle battery state of charge threshold and the high-voltage battery pack state of charge threshold, then detect whether the vehicle's current battery state of charge is lower than the preset vehicle battery state of charge threshold, detect whether the vehicle's current high-voltage battery pack state of charge threshold is greater than the preset high-voltage battery pack state of charge threshold, and simultaneously confirm whether the vehicle is currently in a charging state.

[0045] During the execution of the above steps, by presetting the vehicle battery state of charge threshold and the high-voltage battery pack state of charge threshold, it is possible to clearly determine whether the power levels of the battery and the high-voltage battery pack are within the range that requires recharging. This clear threshold setting helps to improve the accuracy of recharging decisions and avoid untimely or excessive recharging due to ambiguous power judgment. At the same time, by detecting whether the vehicle's current battery state of charge is lower than the preset threshold, and whether the high-voltage battery pack state of charge is greater than the preset threshold, the vehicle's energy status can be understood in real time, which helps to optimize energy distribution, ensure that sufficient power can be provided to the battery when needed, and avoid unnecessary discharge of the high-voltage battery pack, thereby extending the battery life.

[0046] Furthermore, synchronously confirming whether the vehicle is in a charging state can further optimize energy management. If the vehicle is charging, then additional low-voltage charging operations may not be required, thereby avoiding energy waste. In addition, by real-time monitoring of the charge state of the battery and high-voltage battery pack, potential power shortage problems can be discovered in a timely manner, and corresponding charging measures can be taken to ensure that the vehicle can maintain sufficient power during normal driving or shutdown, thereby enhancing the safety and reliability of the system.

[0047] Furthermore, confirming whether the vehicle is in a charging state can avoid unnecessary charging operations during the charging process and prevent safety hazards caused by improper operation. This solution realizes intelligent and automated management of the vehicle's battery status through preset thresholds, real-time monitoring and synchronous confirmation of the charging status, which not only improves efficiency but also reduces the risks and errors of human operations.

[0048] S103. Relying on the threshold detection result and the charging status confirmation result, a low-voltage power replenishment request is sent to the vehicle, and the vehicle is recharged; illustratively, when it is detected that the current battery state of charge of the vehicle is not lower than the preset vehicle battery state of charge threshold, the low-voltage power replenishment request is stopped from being sent to the vehicle; when it is detected that the current high-voltage battery pack state of charge threshold of the vehicle is not greater than the preset high-voltage battery pack state of charge threshold, the low-voltage power replenishment request is stopped from being sent to the vehicle; when it is detected that the current vehicle is in a charging state, the low-voltage power replenishment request is stopped from being sent to the vehicle; when it is detected that the current battery state of charge of the vehicle is lower than the preset vehicle battery state of charge threshold, the current high-voltage battery pack state of charge threshold of the vehicle is greater than the preset high-voltage battery pack state of charge threshold, and the vehicle is not in a charging state, a low-voltage power replenishment request is sent to the vehicle, and the vehicle is recharged.

[0049] During the execution of the above steps, when it is detected that the current battery charge state of the vehicle is not lower than the preset threshold, or the high-voltage battery pack charge state is not greater than the preset threshold, or the vehicle is in the charging state, the system will stop sending low-voltage charging requests, effectively avoiding excessive charging and the energy waste that may be caused by it; when it is detected that the current battery charge state of the vehicle is lower than the preset threshold, and the high-voltage battery pack charge state is sufficient, and the vehicle is not in the charging state, it will send a low-voltage charging request to the vehicle in time and perform charging, ensuring that the vehicle can start and run normally when needed, and improving the reliability and availability of the vehicle. By accurately controlling the charging behavior, this method avoids safety hazards that may be caused by improper charging, such as battery overheating, short circuit, etc. At the same time, ensuring that the vehicle operates in a normal state also enhances the stability of the system.

[0050] In addition, this charging method can intelligently decide whether to recharge based on the actual power level and charging status of the vehicle, thereby improving the user's driving experience. The user does not need to manually intervene in the charging process, and the charging operation can be completed automatically, which improves the convenience of use.

[0051] Furthermore, in the process of sending a low-voltage charging request to the vehicle and charging the vehicle, After a low-voltage charging request is sent to the vehicle, if the low-voltage battery management system in the vehicle does not receive a response or the response times out within a preset time window, the current low-voltage charging request is canceled, while the low-voltage battery status is continuously monitored and the charging failure fault flag is stored; in this process, by setting a preset time window and monitoring the response of the low-voltage battery management system within this time, it is possible to promptly discover whether the charging request is correctly processed; if the response times out, the current charging request is canceled, avoiding the inability to complete or continue to attempt the charging operation due to system failure or communication problems, thereby improving the reliability of the charging system; at the same time, when the low-voltage battery management system does not receive a response or the response times out, not only the current charging request is canceled, but the low-voltage battery status is continuously monitored, and the charging failure fault flag is stored, which is helpful for subsequent diagnosis and analysis of faults, providing accurate information for repair and maintenance, and enhancing fault handling capabilities.

[0052] When a low-voltage charging request is sent to the vehicle, if the low-voltage battery management system in the vehicle responds within the preset time window and does not time out, the system enters the intelligent charging mode and charges the low-voltage battery in the vehicle. During this step, if the low-voltage battery management system responds within the preset time window and does not time out, the system enters the intelligent charging mode and can perform precise charging operations based on the actual power and demand of the low-voltage battery, optimizing the charging efficiency and avoiding the problem of over-charging or under-charging.

[0053] In addition, through intelligent charging management and fault handling, it can ensure that the vehicle is charged in time when needed, while avoiding charging failure or delay due to system failure, improving the user's driving experience and making the user more trusting and dependent on the vehicle's battery management system.

[0054] Furthermore, storing the power replenishment failure fault flag specifically includes presetting a low-voltage power replenishment request failure threshold based on the vehicle design and low-voltage battery management strategy, and then detecting whether the power replenishment request failure number exceeds the preset low-voltage power replenishment request failure threshold; when the power replenishment request failure number exceeds the preset low-voltage power replenishment request failure threshold, the current power replenishment request failure number is cleared to zero, and the power replenishment failure fault flag is stored in a non-volatile memory, which provides the possibility for remote monitoring and diagnosis. Vehicle manufacturers or service providers can obtain the battery status and power replenishment status of the vehicle through the remote system, promptly discover and deal with potential problems, and improve service efficiency and quality.

[0055] In addition, after executing to store the charging failure fault flag in the non-volatile memory, it also includes ending the current charging request process, confirming whether to re-initiate the charging request according to the current state of the vehicle and the health of the low-voltage battery, or entering the fault diagnosis and maintenance process; when the number of charging request failures does not exceed the preset low-voltage charging request failure number threshold, the relationship between the charging number and the threshold is evaluated, and the charging process is executed again.

[0056] In a second aspect, this embodiment provides an EV vehicle battery charging system, such as Figure 2 As shown, including: A judgment module, used to judge the current state mode of the vehicle; An identification module, used to identify the current status of the vehicle power source and the front hatch; An activation module is used to activate the battery sensor to actively wake up the potential energy; A detection module, used to detect whether the state of charge of the vehicle battery and the state of charge of the high-voltage battery pack are lower than a threshold value, and to confirm whether the vehicle is in a charging state; The charging module is used to send a low-voltage charging request to the vehicle and to charge the vehicle.

[0057] In a third aspect, a mobile terminal is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the EV vehicle battery charging method as described above when executing the computer program.

[0058] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned EV vehicle battery charging method are implemented.

[0059] In a fifth aspect, a computer program product is provided, comprising computer instructions, wherein the computer instructions instruct a computing device to execute operations corresponding to the EV vehicle battery charging method as described above.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A method for replenishing the battery of an EV vehicle, characterized in that: include: While determining the current state mode of the vehicle, identifying the current state of the vehicle power supply and the front hatch, and synchronously activating the battery sensor to actively wake up the potential energy; While checking whether the vehicle battery charge state and the high-voltage battery pack charge state are lower than the threshold, confirm whether the vehicle is in a charging state; Relying on the threshold detection result and the charging state confirmation result, a low-voltage power replenishment request is sent to the vehicle, and the vehicle is recharged.

2. The EV battery charging method according to claim 1, characterized in that: While determining the current state mode of the vehicle, identifying the current state of the vehicle power supply and the front hatch, and synchronously activating the battery sensor to actively wake up the potential energy, specifically includes: Determining whether the vehicle is currently in factory mode, transport mode, or user mode; wherein the factory mode is when the vehicle electrical system is in an initialization and safety check state; The transport mode is that the electronic components in the current vehicle electrical system that are not in operation are in a dormant state; The user mode is a state in which all electronic components in the vehicle electrical system are turned on and running normally after the driver enters the vehicle cab; When the current state mode of the vehicle is judged as the factory mode, the current state of the vehicle power supply and the front hatch is not identified, and the battery sensor is not activated to actively wake up the potential energy; When the vehicle's current state mode is judged to be transport mode or user mode, and at the same time it is recognized that the vehicle power is turned off and the front hood is locked, the battery sensor is synchronously activated to actively wake up the potential energy.

3. The EV battery charging method according to claim 1, characterized in that: The detecting whether the state of charge of the vehicle battery and the state of charge of the high-voltage battery pack are lower than the threshold value and confirming whether the vehicle is in a charging state specifically includes: Presetting the vehicle battery state of charge threshold and the high-voltage battery pack state of charge threshold; Detect whether the vehicle's current battery state of charge is lower than the preset vehicle battery state of charge threshold, detect whether the vehicle's current high-voltage battery pack state of charge threshold is greater than the preset high-voltage battery pack state of charge threshold, and simultaneously confirm whether the current vehicle is in a charging state.

4. The EV battery charging method according to claim 1, characterized in that: The method of sending a low-voltage charging request to the vehicle and charging the vehicle based on the threshold detection result and the charging status confirmation result specifically includes: When it is detected that the current battery state of charge of the vehicle is not lower than the preset vehicle battery state of charge threshold, the low-voltage charging request is stopped to the vehicle; When it is detected that the current state of charge threshold of the high-voltage battery pack of the vehicle is not greater than the preset state of charge threshold of the high-voltage battery pack, the low-voltage charging request is stopped from being sent to the vehicle; When it is detected that the current vehicle is in charging state, the low-voltage charging request is stopped; When it is detected that the vehicle's current battery state of charge is lower than the preset vehicle battery state of charge threshold, the vehicle's current high-voltage battery pack state of charge threshold is greater than the preset high-voltage battery pack state of charge threshold, and the vehicle is not in a charging state, a low-voltage charging request is sent to the vehicle and the vehicle is charged.

5. The EV battery charging method according to claim 4, characterized in that: The sending of a low-voltage power replenishment request to the vehicle and performing power replenishment on the vehicle specifically includes: When a low-voltage charging request is sent to the vehicle, if the low-voltage battery management system in the vehicle does not receive a response or the response times out within the preset time window, the current low-voltage charging request is canceled, the low-voltage battery status is continuously monitored, and the charging failure fault flag is stored; When a low-voltage charging request is sent to the vehicle, if the low-voltage battery management system in the vehicle responds within the preset time window and does not time out, it enters the intelligent charging mode and charges the low-voltage battery in the vehicle.

6. The EV battery charging method according to claim 5, characterized in that: The storage power replenishment failure fault flag bit specifically includes: Based on vehicle design and low-voltage battery management strategy, a threshold for the number of low-voltage battery replenishment request failures is preset; Detecting whether the number of failures of the supplementary power request exceeds a preset threshold of the number of failures of the low-voltage supplementary power request; When the number of power replenishment request failures exceeds the preset low-voltage power replenishment request failure threshold, the current power replenishment request failure number is cleared to zero, and a power replenishment failure fault flag is stored in a non-volatile memory; End the current charging request process and determine whether to re-initiate the charging request based on the current state of the vehicle and the health of the low-voltage battery, or enter the fault diagnosis and repair process; When the number of power replenishment request failures does not exceed the preset low-voltage power replenishment request failure number threshold, the relationship between the power replenishment number and the threshold is evaluated, and the power replenishment process is executed again.

7. An EV battery charging system, characterized in that: include: A judgment module, used to judge the current state mode of the vehicle; An identification module, used to identify the current status of the vehicle power source and the front hatch; An activation module is used to activate the battery sensor to actively wake up the potential energy; A detection module, used to detect whether the state of charge of the vehicle battery and the state of charge of the high-voltage battery pack are lower than a threshold value, and to confirm whether the vehicle is in a charging state; The charging module is used to send a low-voltage charging request to the vehicle and to charge the vehicle.

8. A mobile terminal comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the EV vehicle battery replenishment method as described in any one of claims 1-6 are implemented.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the EV vehicle battery charging method as described in any one of claims 1 to 6 are implemented.

10. A computer program product comprising computer instructions, characterized in that: The computer instructions instruct the computing device to execute operations corresponding to the EV vehicle battery charging method according to any one of claims 1-6.

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