Intelligent charging control system and method

Abstract

The invention discloses an intelligent charging control system. The system comprises a data acquisition module which acquires the electric quantity of a storage battery, a credible sign, a whole vehicle mode and voltage in real time; the mode judgment module is used for respectively matching voltage and electric quantity double-path judgment strategies based on three operation modes, namely a sleep mode, an IGON low-voltage mode and a non-IGON low-voltage mode; the charging execution module triggers high-voltage charging when a non-factory mode is met, a front cabin cover is closed, a power battery is larger than a set value and no high-voltage fault exists; and the termination control module quits the charging process according to the charging duration, the electric quantity threshold value or the user instruction. Through a multi-mode differentiation judgment mechanism, voltage dynamic monitoring is started when the electric quantity credibility is abnormal, the problem that when the electric quantity of the storage battery is not credible, a traditional method cannot accurately trigger electricity supplement, and consequently the vehicle is lack of electricity is solved, the electricity lack risk is remarkably reduced, and the service life of the storage battery is prolonged.

Description

Technical Field

[0001] The technical field of this invention is electric vehicle electronic control, specifically an intelligent charging control system and method. Background Technology

[0002] Compared to traditional gasoline vehicles, new energy electric vehicles have a significantly increased number of electrification modules, resulting in a stronger reliance on electricity and placing higher demands on the continuous power supply capacity of the low-voltage battery system. If the vehicle is not used frequently or remains in a low-voltage state for extended periods, the battery will often become depleted, preventing the vehicle from receiving high-voltage power and shortening battery life. To address this issue, an intelligent charging function has been proposed. During extended periods of vehicle parking, the low-voltage battery level is periodically checked. When a low level is detected, the vehicle is activated to initiate high-voltage charging, using the mains battery to charge the low-voltage battery via a DC-DC converter.

[0003] In existing technologies, the controller can be woken up periodically after the vehicle goes into sleep mode to detect the battery voltage. When the voltage drops below a set threshold, the power battery is recharged. However, the timed wake-up mechanism cannot detect the reliable state of the battery charge (SOC). When sensor malfunctions cause inaccuracies (e.g., after the battery is re-inserted), relying solely on voltage criteria can easily lead to false triggering or missed triggering. Alternatively, the battery charge can be continuously monitored in IGON mode (start-up wake-up mode), and recharge can be initiated when the battery charge is below a set value. However, existing solutions do not differentiate between sleep / IGON / non-IGON modes in terms of power consumption. In sleep mode, the fixed-period detection ignores voltage recovery time (e.g., after a large current discharge, a 4-hour rest period is required to measure the actual OCV). In non-IGON mode (e.g., when the air conditioning is remotely turned on), the controller continuously consumes power, but using the IGON mode threshold will trigger recharge prematurely. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent power replenishment control system. This invention can set different intelligent power replenishment judgment strategies for different low-voltage operating conditions, improve the timing of intelligent power replenishment judgment, ensure that intelligent power replenishment is activated in a timely manner, and increase the determination of battery voltage. This can avoid the inability to accurately determine whether the intelligent power replenishment function needs to be activated when the battery power is unreliable, and effectively reduce the risk of vehicle power depletion.

[0005] To achieve this objective, the present invention provides an intelligent power replenishment control system, which includes: The data acquisition module is used to acquire real-time battery power, power reliability indicators, vehicle operating mode, and battery voltage. The mode determination module is used to select the corresponding power replenishment determination strategy according to the vehicle's operating mode. If the battery power, power reliability flag, and battery voltage meet the determination conditions of the selected power replenishment determination strategy, an intelligent power replenishment request is triggered. The power replenishment execution module is used to perform high voltage operation and intelligently replenish the battery through the power battery when a smart power replenishment request is triggered and the set power replenishment activation conditions are met. The termination control module is used to exit the intelligent power replenishment process after completing the high-voltage operation and intelligent power replenishment, if the set power replenishment shutdown conditions are met.

[0006] Preferably, the vehicle operation mode includes a sleep mode, a low-voltage mode with startup wake-up, and a low-voltage mode without startup wake-up. The power replenishment determination strategy and its determination conditions for the sleep mode are as follows: When in sleep mode, the vehicle controller is woken up at set wake-up intervals. If condition one is met, i.e. the power trust flag is trustworthy and the battery power meets the set normal start power; or condition two is met, i.e. the battery voltage meets set range one and the battery voltage duration meets set time range one, then it is determined that intelligent charging needs to be activated and an intelligent charging request is triggered. If neither condition is met, the system enters sleep mode again.

[0007] Preferably, the vehicle operation mode includes a sleep mode, a low-voltage mode with startup wake-up, and a low-voltage mode without startup wake-up. The power replenishment determination strategy and its determination conditions for the low-voltage mode with startup wake-up are as follows: When in low-voltage start-up mode, the battery power, power reliability flag, and battery voltage are monitored in real time. If condition one is met, i.e., the power reliability flag is reliable and the battery power meets the set normal start-up power; or condition three is met, i.e. the battery voltage meets the set voltage range two and the battery voltage duration meets the set time range two, then it is determined that intelligent power replenishment needs to be activated and an intelligent power replenishment request is triggered. If any condition is not met, intelligent power replenishment is not activated.

[0008] Preferably, the vehicle operation mode includes a sleep mode, a low-voltage mode with startup wake-up, and a low-voltage mode without startup wake-up. The power replenishment determination strategy and its determination conditions for the low-voltage mode without startup wake-up are as follows: When in low-voltage mode without startup wake-up, the battery level, power reliability flag, and battery voltage are monitored in real time. If condition one is met, i.e., the power reliability flag is reliable and the battery level meets the set normal startup power; or if condition four is met, i.e., the battery voltage meets the set voltage range three, the sleep time meets the set sleep time judgment range, and the battery voltage duration meets the set time range three, then it is determined that intelligent power replenishment needs to be activated, and an intelligent power replenishment request is triggered. If any condition is not met, intelligent power replenishment is not activated.

[0009] Preferably, the charging start condition set in the charging execution module is that all of the following conditions must be met simultaneously: the vehicle is in non-factory mode, the hood is closed, the power battery charge meets the set charge range, and there is no high voltage prohibition fault.

[0010] Preferably, the power replenishment shutdown condition set in the termination control module is to meet any of the following conditions: the battery charging time meets the set charging time, the battery power is reliable and the battery power meets the set full charge range, and the intelligent power replenishment is turned off by manual operation.

[0011] Preferably, after the termination control module executes, it controls the vehicle to return to its original working mode, which is the vehicle mode when intelligent charging is not enabled.

[0012] A method for intelligent charging control of new energy vehicles, comprising: Real-time acquisition of battery power, power reliability indicator, vehicle operating mode, and battery voltage; The corresponding power replenishment determination strategy is selected according to the vehicle's operating mode. If the battery power, power reliability flag, and battery voltage meet the determination conditions of the selected power replenishment determination strategy, an intelligent power replenishment request is triggered. When a smart charging request is triggered and the set charging activation conditions are met, a high-voltage operation is performed, and the battery is intelligently charged through the power battery. After completing the high-voltage operation and intelligent power replenishment, if the set power replenishment shutdown conditions are met, the intelligent power replenishment process will exit.

[0013] A new energy vehicle equipped with the aforementioned intelligent charging control system.

[0014] A computer program product includes a computer program that, when executed by a processor, implements the steps of the method.

[0015] The beneficial effects of this invention are as follows: This invention proposes an intelligent power replenishment control system. Through a periodic wake-up mechanism in sleep mode, combined with the reliable state of battery power and voltage judgment threshold, reliable power replenishment triggering is achieved in low-power scenarios, avoiding battery depletion due to prolonged parking. For the low-voltage mode requiring wake-up, a real-time monitoring strategy is adopted, setting a dynamic voltage threshold to cope with power fluctuations of electrical appliances, ensuring timely activation of power replenishment when voltage fluctuations are large, and preventing misjudgments. For the low-voltage mode requiring non-wake-up, a sleep time judgment threshold and pseudo-static voltage judgment are introduced to optimize the accuracy of voltage judgment and avoid redundant wake-ups caused by voltage fluctuations. Strict conditions are set in the power replenishment execution module to ensure the safety of high-voltage operation and avoid unnecessary system risks. A termination control module is designed to enable timely exit of intelligent power replenishment and control the vehicle to return to its original operating mode, optimizing system efficiency and energy saving. This invention integrates multi-mode judgment strategies through a unified architecture, reducing algorithm complexity and development costs while improving judgment accuracy and response speed. It is applicable to various new energy vehicle scenarios. By setting differentiated charging judgment strategies for different vehicle operating modes and introducing battery voltage as an auxiliary judgment condition, it effectively solves the problem in existing technologies that cannot accurately determine charging needs when battery power is unreliable. This significantly reduces the risk of vehicle battery depletion and improves battery life and vehicle reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a flowchart illustrating the model of the present invention; Figure 3 A schematic diagram of the intelligent power replenishment function triggered by battery voltage in IGN low-voltage mode; Figure 4 This is the SoC-OCV curve of the battery. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. 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 claimed invention, but merely to represent selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1 A smart power replenishment control system, such as Figure 1 As shown, it includes: The data acquisition module is used to acquire real-time battery power, power reliability indicators, vehicle operating mode, and battery voltage. The mode determination module is used to select the corresponding power replenishment determination strategy according to the vehicle's operating mode. If the battery power, power reliability flag, and battery voltage meet the determination conditions of the selected power replenishment determination strategy, an intelligent power replenishment request is triggered. The power replenishment execution module is used to perform high voltage operation and intelligently replenish the battery through the power battery when a smart power replenishment request is triggered and the set power replenishment activation conditions are met. The termination control module is used to exit the intelligent power replenishment process after completing the high-voltage operation and intelligent power replenishment, if the set power replenishment shutdown conditions are met.

[0019] Some embodiments of the present invention provide an intelligent power replenishment control system that can simultaneously acquire the battery SoC and a trusted indicator. When the indicator fails, it automatically switches to continuous voltage determination, resolving the blind spot in sensor failure scenarios. Different independent determination logic systems and methods are constructed. In sleep mode, an OCV (open circuit voltage) rest period is used to ensure measurement accuracy. In non-IGON mode, a voltage drop compensation threshold is introduced to offset the impact of controller power consumption, reducing the risk of vehicle battery depletion. Modular division of labor clarifies the responsibilities of each stage: the data acquisition module uniformly acquires battery power, trusted indicator, voltage, and vehicle mode; the mode determination module follows the mode switching strategy; the power replenishment execution module coordinates high-voltage power-on and charging processes; and the termination control module ensures a power replenishment exit mechanism. This structured design enhances the feasibility and maintainability of the solution, avoiding functional logic fragmentation.

[0020] There are several preferred technical solutions that can be implemented based on the above-described technical solutions of the present invention, as detailed below.

[0021] The overall operating mode described in this invention refers to the low-voltage operating mode of the vehicle. The overall operating mode includes a dormant mode, a low-voltage mode that is activated upon startup, and a low-voltage mode that is not activated upon startup. The low-voltage mode that is not activated upon startup refers to the condition in which the low-voltage system is briefly activated from a dormant state by a specific signal or event when the vehicle is not in a driving state (i.e., the high-voltage system is not activated), including but not limited to remote command wake-up mode, key proximity and operation wake-up mode, etc.

[0022] The low-voltage wake-up mode is a prerequisite for activating the vehicle's high-voltage system. It supplies power to the control system via the low-voltage battery, enabling the vehicle to transition from a dormant state to a drivable state. This includes, but is not limited to, key start mode, where the low-voltage system is woken up by a physical key or smart key, gradually activating the high-voltage circuit; and low-voltage battery depletion wake-up mode, etc.

[0023] For vehicle sleep mode, the corresponding charging determination strategy and the determination conditions for the charging determination strategy are as follows: When in sleep mode, the vehicle controller is woken up at set wake-up intervals. If condition one is met, i.e. the power reliability flag is reliable and the battery power meets the set normal start-up power; or condition two is met, i.e. the battery voltage meets set range one and the battery voltage duration meets set time range one, then it is determined that intelligent power replenishment needs to be activated, triggering an intelligent power replenishment request and immediately waking up the control high-voltage circuit controller. If neither condition is met, the system enters sleep mode again.

[0024] The battery power reliability flag involved in this invention is a binary status identifier generated by a battery sensor. It is used to determine the reliability of the current battery power data. If the identifier is reliable, the sensor confirms the power data is accurate and usable; if the identifier is unreliable, the power data contains errors or is invalid and cannot be directly used for decision-making. In some implementations, unreliable situations for the current battery power data include: 1. Deep discharge (battery depleted); 2. Unreliable initial SoC value (e.g., disconnection of battery power); 3. Sensor malfunction.

[0025] In the above technical solution, the normal starting power cannot be lower than the lower limit of the battery capacity that can ensure the vehicle starts normally and reaches high voltage.

[0026] In some implementations, for hibernation conditions, the set wake-up cycle time is determined based on the battery static voltage (voltage after a long period of inactivity), which can be determined by the battery OCV inactivity time; in the embodiments, the set wake-up cycle time can be selected as 4~6h.

[0027] In some embodiments of the present invention, the range of the battery voltage setting is also the first set voltage; it can be determined based on technical selection, including but not limited to confirming the OCV value corresponding to the normal starting power by querying the battery SoC-OCV curve. In selected embodiments, the first set voltage value is 12.5V; the set voltage range is less than 12.5V.

[0028] In some embodiments of the present invention, the method for determining that the battery voltage duration meets the set requirements includes setting a voltage stabilization time based on ensuring that the battery voltage does indeed decrease rather than fluctuate; the battery voltage duration meets a set time range one, which is also a first set voltage duration, including but not limited to the set time ranges of set time range one, set time range two, and set time range three being the same. In an optional embodiment, the set voltage duration range one, set voltage duration range two, and set voltage duration range three are all 5s.

[0029] For the high-voltage circuit controller, some optimized technical solutions include: the controller is used to control the high voltage of the whole vehicle, close the main positive and negative relays. In the sleep mode, the controller needs to be woken up first, and then the high voltage of the whole vehicle needs to be controlled to close the main positive / negative relays so that the power battery can charge the storage battery. The high-voltage circuit controller is used to control the controllers related to the high-voltage circuit, such as VCU (Vehicle Control Unit), BMS (Battery Management System), and DCDC (Direct Current to Direct Current Converter). Among them, VCU leads the high voltage process, BMS is responsible for performing the high voltage operation (closing the high voltage relay to complete the pre-charge), and finally the high voltage power battery charges the low voltage storage battery through the DCDC.

[0030] Some embodiments of the present invention employ a periodic wake-up mechanism and introduce voltage determination to solve the problem of misjudgment of static voltage fluctuations and ensure accurate wake-up timing; for example, including but not limited to detecting the working condition after resting, thereby avoiding false triggering.

[0031] In some embodiments of the present invention, the vehicle operation modes include a sleep mode, a low-voltage mode with startup wake-up, and a low-voltage mode without startup wake-up. The power replenishment determination strategy and determination conditions for the low-voltage mode with startup wake-up are as follows: When in low-voltage start-up mode, the battery power, power reliability flag, and battery voltage are monitored in real time. If condition one is met, i.e., the power reliability flag is reliable and the battery power meets the set normal start-up power; or condition three is met, i.e. the battery voltage meets the set voltage range two and the battery voltage duration meets the set time range two, then it is determined that intelligent power replenishment needs to be activated and an intelligent power replenishment request is triggered. If any condition is not met, intelligent power replenishment is not activated.

[0032] In some embodiments of the present invention, the battery voltage meets the set voltage range two. Under this operating condition, the battery voltage is dynamic and fluctuates greatly due to the power of low-voltage electrical appliances. Therefore, in order to ensure that the vehicle will not be depleted due to the power consumption of low-voltage electrical appliances, the voltage range two cannot be lower than the dynamic voltage value that the battery can guarantee the normal start of the vehicle. This value can be obtained through actual vehicle testing.

[0033] In some embodiments of the present invention, the second set voltage range of the battery voltage is also a second set voltage; it can be determined based on technical selection, including but not limited to obtaining it through actual vehicle testing. Under this operating condition, the battery voltage meets the second set voltage range. The battery voltage is dynamic, and the dynamic voltage is greatly affected by the power of low-voltage electrical appliances. To ensure that the vehicle will not be depleted due to the power consumption of low-voltage electrical appliances, the second set voltage range cannot be lower than the dynamic voltage value that the battery can guarantee the normal starting of the vehicle. In some selected embodiments, the second set voltage value is 10.5V; the set voltage range is less than 10.5V.

[0034] In some embodiments of the present invention, the voltage threshold is adjusted to voltage range two, which reduces voltage fluctuations caused by the load of electrical appliances in this mode and avoids accidental activation of supplementary power due to instantaneous voltage drop.

[0035] In some embodiments of the present invention, the vehicle operating mode includes a hibernation mode, a low-voltage mode with startup wake-up, and a low-voltage mode without startup wake-up. The power replenishment determination strategy and determination conditions for the low-voltage mode without startup wake-up are as follows: When in low-voltage mode without startup wake-up, the battery level, power reliability flag, and battery voltage are monitored in real time. If condition one is met, i.e., the power reliability flag is reliable and the battery level meets the set normal startup power; or if condition four is met, i.e., the battery voltage meets the set voltage range three, the sleep time meets the set sleep time judgment range, and the battery voltage duration meets the set time range three, then it is determined that intelligent power replenishment needs to be activated, and an intelligent power replenishment request is triggered. If any condition is not met, intelligent power replenishment is not activated.

[0036] For the low-voltage mode, some optimized technical solutions include: the low-voltage mode includes a low-voltage mode with startup wake-up and a low-voltage mode without startup wake-up, in which the whole vehicle is not connected to high voltage and the main positive / negative relays are disconnected.

[0037] In some embodiments of the present invention, the specific method for setting the range of sleep time is as follows: considering that the battery voltage fluctuates significantly when the vehicle first enters sleep mode, making it impossible to accurately determine the sleep time, the pseudo-static voltage after a period of rest can be used to improve the accuracy. Therefore, the sleep time should be set as close as possible to the time when the battery voltage is relatively stable (the sleep time set in this embodiment is 30 minutes), which can be obtained through actual vehicle testing.

[0038] In some embodiments of the present invention, the third range of the battery voltage setting is also the third set voltage; it can be determined based on technical selection, including but not limited to obtaining it through actual vehicle testing. The third set voltage range is obtained by subtracting the battery voltage drop introduced by the controller power consumption from the first voltage setting range. In selected embodiments, the battery voltage drop is 0.7V, and the third set voltage value is 11.8V; the set voltage range is less than 11.8V.

[0039] Some embodiments of the present invention add sleep time determination and pseudo-static voltage. For scenarios where the voltage is unstable when the device is just starting to sleep, the accuracy is improved by delaying the determination. By using differentiated voltage thresholds, wake-up cycles and determination logic, the problem of determination failure when the power is unreliable is solved. Voltage-assisted determination is used as a redundant solution for the failure of the power reliability indicator, which significantly reduces the risk of power depletion.

[0040] In some embodiments of the present invention, the charging activation conditions set in the charging execution module are that all of the following conditions must be met simultaneously: the vehicle is in non-factory mode, the hood is closed, the power battery charge meets the set charge range, and there is no high-voltage prohibition fault.

[0041] Regarding the conditions for enabling the charging system, some optimized technical solutions include: the non-factory mode is the maintenance mode, which is entered through operation on the central control screen, and the controller identifies it through the corresponding flag; the hood is closed, meaning the vehicle's hood is completely closed (there are high-voltage components in the front compartment of the electric vehicle, and to prevent personnel from touching these components during intelligent charging and causing electric shock, it is essential to ensure that the hood is completely closed when intelligent charging is enabled); the power battery SoC is greater than 20%; and the absence of a prohibited high-voltage fault refers to a situation where the entire vehicle has a fault, making it impossible to perform high-voltage operation.

[0042] Some embodiments of the present invention limit the activation conditions of the charging execution module, design charging prerequisites, eliminate operational risks in factory maintenance mode and front compartment open state, ensure that the power battery has enough energy to complete charging (the lower limit of SOC of 20% is derived from real vehicle testing), and avoid invalid or dangerous operations by prohibiting high voltage fault detection.

[0043] In some embodiments of the present invention, the power replenishment shutdown condition set in the termination control module is that any of the following conditions must be met: the battery charging time meets the set charging time, the battery power is reliable and the battery power meets the set full charge range, and the intelligent power replenishment is turned off by manual operation.

[0044] Regarding the conditions for shutting down the intelligent charging system, some optimized technical solutions include: the battery charging time meets the set charging time, which is the time required to charge the battery from normal starting power to full charge, and can be obtained through real vehicle testing; the battery power is reliable and meets the set full charge range, which in this embodiment is set to a battery power of 95% or higher as the full charge range; the intelligent charging system is shut down manually, which means that the user shuts down the intelligent charging system (specific communication module) through the APP or DA.

[0045] Some embodiments of the present invention define exit conditions for termination control, covering the time required for full charging, to ensure charging saturation and avoid premature exit leading to insufficient charging; they also support remote termination by users via APP / DA, providing operational flexibility.

[0046] In some embodiments of the present invention, after the termination control module executes, the vehicle is controlled to return to its original working mode, which refers to the vehicle mode when intelligent charging is not enabled.

[0047] In some embodiments of the present invention, the original working mode refers to the vehicle mode when intelligent charging is not enabled. For example, if the vehicle is in a dormant mode before intelligent charging, the vehicle will enter dormant mode after intelligent charging is disabled. If the vehicle performed IGN operation before intelligent charging, the vehicle will maintain IGN low voltage mode by lowering the high voltage after intelligent charging is disabled.

[0048] Some embodiments of the present invention clarify the state switching after power replenishment by returning to the original mode, ensuring the controllability of system behavior and avoiding abnormal energy consumption caused by mode confusion.

[0049] Example 2 A smart power replenishment control method, such as Figure 2 As shown, it includes: Real-time acquisition of battery power, power reliability indicator, vehicle operating mode, and battery voltage; The corresponding power replenishment determination strategy is selected according to the vehicle's operating mode. If the battery power, power reliability flag, and battery voltage meet the determination conditions of the selected power replenishment determination strategy, an intelligent power replenishment request is triggered. When a smart charging request is triggered and the set charging activation conditions are met, a high-voltage operation is performed, and the battery is intelligently charged through the power battery. After completing the high-voltage operation and intelligent power replenishment, if the set power replenishment shutdown conditions are met, the intelligent power replenishment process will exit.

[0050] In some embodiments of the present invention, 1 the battery power and reliability flag are obtained through a battery sensor, and the current vehicle mode and battery voltage are obtained through a vehicle controller.

[0051] Different intelligent charging determination methods are set for different vehicle modes, as follows: 1. When the vehicle is in the sleep mode, it wakes up every △T_1 (which can be woken up by the controller regularly, such as the BMS RTC wake-up or the Tbox wake-up) to obtain the parameters in step 1. If (the battery power is reliable and the battery power < SoC_1) or (the battery voltage < Volt_1 and the duration > Time_1), it is determined that intelligent charging needs to be enabled, and the high-voltage circuit controller (such as the BMS or VCU) is immediately woken up, otherwise it enters the sleep mode again; Among them, △T_1 is the wake-up period, which is used to determine for the sleep condition considering the static voltage of the battery (the voltage after a long time of standing). Therefore, △T_1 can be determined by the OCV standing time of the battery (4 - 6h); SoC_1 is the battery power determination threshold. To ensure that the vehicle can start normally without power shortage problems, SoC_1 cannot be lower than the lower limit of the battery capacity that can ensure the vehicle starts normally and powers on high voltage (60%), which can be obtained through actual vehicle tests; Volt_1 is the battery voltage determination threshold, which can be obtained by querying the battery SoC-OCV curve, such as Figure 4 shown, to confirm the OCV value (12.5V) corresponding to SoC_1, and the corresponding OCV value is Volt_1; Time_1 is the battery voltage confirmation time. To ensure that the battery voltage has actually decreased rather than fluctuated, a voltage stabilization time (5s) is set.

[0052] 2. When the vehicle is in the IGON low-voltage mode (all controllers are working, and there may be low-voltage electrical appliances consuming power at the same time), the battery power, power reliability flag, vehicle operation mode, and battery voltage are obtained in real time. If (the battery power is reliable and the battery power < SoC_1) or (the battery voltage < Volt_2 and the duration > Time_1), it is determined that intelligent charging needs to be enabled; Among them, Volt_2 is the battery voltage determination threshold. In this condition, the battery is in a dynamic voltage state, and the voltage fluctuates greatly due to the power of low-voltage electrical appliances. To ensure that the vehicle does not experience power shortage due to the power consumption of low-voltage electrical appliances, Volt_2 cannot be lower than the dynamic voltage value of the battery that can ensure the vehicle starts normally (10.5V), which can be obtained through actual vehicle tests.

[0053] 3. When the whole vehicle is in the non-IGON low-voltage mode (for example, some controllers of the moving door are working), the battery power, the battery power credibility flag, the whole vehicle operation mode, and the battery voltage are obtained in real time. If (the battery power is credible and the battery power < SoC_1) or (the sleep time > ΔT_2, the battery voltage < Volt_3, and the duration > Time_1), it is determined that intelligent charging needs to be started, and the relevant controllers for controlling the high-voltage circuit (such as BMS and VCU) are immediately awakened; Among them, ΔT_2 is the sleep time determination threshold. Considering that the battery voltage fluctuates significantly when the whole vehicle just enters the sleep state and cannot be accurately determined, the pseudo-static voltage after standing for a period of time is used for determination to improve the accuracy. Therefore, the setting of ΔT_2 should not be lower than the relatively stable time of the battery voltage (30 min) as much as possible, and it can be obtained through vehicle tests; Volt_3 is the battery voltage determination threshold, which is calculated as: Volt_3 = Volt_1 - ΔVolt, where ΔVolt is the battery voltage drop (0.7 V) introduced by the controller power consumption in the non-IGON low-voltage mode, and it can be obtained through vehicle tests.

[0054] In some preferred embodiments of the present invention when triggering the intelligent charging request, if it is determined that charging needs to be started and all the following conditions are met at the same time, then the high-voltage operation is performed, and the battery is charged by the power battery. The specific conditions are as follows: 1. Non-factory mode, that is, maintenance mode, which is entered by operating on the central control screen, and the controller identifies through the corresponding flag bits; 2. The front hood is closed; 3. The remaining power of the power battery > 20%; 4. There is no high-voltage prohibition-related fault. Since the high-voltage operation needs to be performed to charge the battery by the power battery, if the whole vehicle has a fault that does not allow high-voltage at this time, the battery cannot be charged by the power battery, and the intelligent charging function cannot be executed.

[0055] In some implementation schemes of the present invention, when the vehicle is in the IGON low-voltage mode (the whole vehicle controller is working, and the low-voltage electrical appliances may consume power), the battery power (SoC) is in an untrusted state due to sensor faults or resets, such as Figure 3 As shown, when the battery voltage drops below the threshold Volt_2 (10.5 V) and the duration meets the requirements, the intelligent charging function is triggered.

[0056] In some preferred embodiments of the present invention after the high-voltage operation is completed to start the intelligent charging, if any of the following conditions is met, the intelligent charging process is exited and the original mode is maintained: 1. Battery charging time ≥ △T_3 (2h, the time required from SoC_1 charging to full battery charge, which can be obtained through actual vehicle testing). 2. The battery capacity is reliable, and the battery capacity is ≥ SoC_2 (95%). 3. Users can turn off smart charging via the communication module (APP or DA operation), for example, Tbox.

[0057] In some embodiments of the present invention, the original mode refers to the vehicle mode when intelligent charging is not enabled. For example, if the vehicle is in a dormant mode before intelligent charging, the vehicle will enter dormant mode after intelligent charging is disabled; if the vehicle performed IGN operation before intelligent charging, the vehicle will maintain IGN low voltage mode by lowering the high voltage after intelligent charging is disabled.

[0058] Example 3 A new energy vehicle is equipped with an intelligent power replenishment control system as described in Example 1.

[0059] Example 4 A computer program product includes a computer program that, when executed by a processor, implements the steps of the method described in Embodiment 2.

[0060] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. An intelligent power replenishment control system, characterized in that, include: The data acquisition module is used to acquire real-time battery power, power reliability indicators, vehicle operating mode, and battery voltage. The mode determination module is used to select the corresponding power replenishment determination strategy according to the vehicle's operating mode. If the battery power, power reliability flag, and battery voltage meet the determination conditions of the selected power replenishment determination strategy, an intelligent power replenishment request is triggered. The power replenishment execution module is used to perform high voltage operation and intelligently replenish the battery through the power battery when a smart power replenishment request is triggered and the set power replenishment activation conditions are met. The termination control module is used to exit the intelligent power replenishment process after completing the high-voltage operation and intelligent power replenishment, if the set power replenishment shutdown conditions are met.

2. The intelligent power replenishment control system according to claim 1, characterized in that: The vehicle operating modes include a sleep mode, a low-voltage mode with startup wake-up, and a low-voltage mode without startup wake-up. The power replenishment determination strategy and its conditions for the sleep mode include: When in sleep mode, the vehicle controller is woken up at set wake-up intervals. If condition one is met, i.e. the power reliability flag is reliable and the battery power meets the set normal start-up power; or condition two is met, i.e. the battery voltage meets set range one and the battery voltage duration meets set time range one, then it is determined that intelligent power replenishment needs to be activated, triggering an intelligent power replenishment request and immediately waking up the control high-voltage circuit controller. If neither condition is met, the system enters sleep mode again.

3. The intelligent power replenishment control system according to claim 1, characterized in that: The vehicle operating modes include a sleep mode, a low-voltage mode with startup wake-up, and a low-voltage mode without startup wake-up. The power replenishment determination strategy and its conditions for the low-voltage mode with startup wake-up include: When in low-voltage start-up mode, the battery power, power reliability flag, and battery voltage are monitored in real time. If condition one is met, i.e., the power reliability flag is reliable and the battery power meets the set normal start-up power; or condition three is met, i.e. the battery voltage meets the set voltage range two and the battery voltage duration meets the set time range two, then it is determined that intelligent power replenishment needs to be activated and an intelligent power replenishment request is triggered. If any condition is not met, intelligent power replenishment is not activated.

4. The intelligent power replenishment control system according to claim 1, characterized in that: The vehicle operation modes include a sleep mode, a low-voltage mode with startup wake-up, and a low-voltage mode without startup wake-up. The power replenishment determination strategy and its determination conditions for the low-voltage mode without startup wake-up are as follows: When in low-voltage mode without startup wake-up, the battery level, power reliability flag, and battery voltage are monitored in real time. If condition one is met, i.e., the power reliability flag is reliable and the battery level meets the set normal startup power; or if condition four is met, i.e., the battery voltage meets the set voltage range three, the sleep time meets the set sleep time judgment range, and the battery voltage duration meets the set time range three, then it is determined that intelligent power replenishment needs to be activated, and an intelligent power replenishment request is triggered. If any condition is not met, intelligent power replenishment is not activated.

5. The intelligent power replenishment control system according to claim 1, characterized in that: The charging activation conditions set in the charging execution module include the following conditions being met simultaneously: the vehicle is in non-factory mode, the hood is closed, the power battery charge is within the set charge range, and there is no high-voltage prohibition fault.

6. The intelligent power replenishment control system according to claim 1, characterized in that: The power replenishment shutdown conditions set in the termination control module include meeting any of the following conditions: the battery charging time meets the set charging time, the battery power is reliable and the battery power meets the set full charge range, and the intelligent power replenishment is turned off by manual operation.

7. The intelligent power replenishment control system according to claim 1, characterized in that: After the termination control module executes, it controls the vehicle to return to its original working mode, which is the vehicle mode when intelligent power replenishment is not enabled.

8. A smart power replenishment control method, characterized in that, It includes: Real-time acquisition of battery power, power reliability indicator, vehicle operating mode, and battery voltage; The corresponding power replenishment determination strategy is selected according to the vehicle's operating mode. If the battery power, power reliability flag, and battery voltage meet the determination conditions of the selected power replenishment determination strategy, an intelligent power replenishment request is triggered. When a smart charging request is triggered and the set charging activation conditions are met, a high-voltage operation is performed, and the battery is intelligently charged through the power battery. After completing the high-voltage operation and intelligent power replenishment, if the set power replenishment shutdown conditions are met, the intelligent power replenishment process will exit.

9. A new energy vehicle, characterized in that, Equipped with the intelligent power replenishment control system as described in claim 1.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method of claim 8.

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