WO2025251572A1 - 车辆低压蓄电池补电方法及相关设备 - Google Patents

车辆低压蓄电池补电方法及相关设备

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Publication number
WO2025251572A1
WO2025251572A1 PCT/CN2024/138129 CN2024138129W WO2025251572A1 WO 2025251572 A1 WO2025251572 A1 WO 2025251572A1 CN 2024138129 W CN2024138129 W CN 2024138129W WO 2025251572 A1 WO2025251572 A1 WO 2025251572A1
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WO
WIPO (PCT)
Prior art keywords
voltage
vehicle
low
power
power replenishment
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Pending
Application number
PCT/CN2024/138129
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English (en)
French (fr)
Inventor
唐泽兵
薛永康
付孟魁
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Dongfeng Motor Group Co Ltd
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Dongfeng Motor Group Co Ltd
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Application filed by Dongfeng Motor Group Co Ltd filed Critical Dongfeng Motor Group Co Ltd
Publication of WO2025251572A1 publication Critical patent/WO2025251572A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • This invention relates to the field of electric vehicle charging technology, and more specifically, to a method for replenishing a vehicle's low-voltage battery, a device for replenishing a vehicle's low-voltage battery, an electronic device, and a storage medium.
  • the low-voltage battery may become depleted due to the loss of dark current throughout the vehicle, which may cause the vehicle to fail to start.
  • vehicle communication box when certain conditions are met, send vehicle start/power-on commands to the vehicle communication box via a mobile app or other communication method.
  • the vehicle communication box then interacts with the vehicle to request the vehicle to switch off the high voltage, allowing the power battery to charge the low-voltage battery, thereby extending the time before the vehicle can be restarted after being idle.
  • the above technical solution requires the user to actively trigger it, which is subject to uncertainty such as forgetting. Furthermore, the solution can only be implemented if the vehicle is not out of power and can be remotely started/powered on. Once the vehicle is out of power, the solution will not work.
  • a start/power-on command is sent to the vehicle's communication box via a mobile app or other communication method.
  • the communication box then interacts with the vehicle to request the high-voltage battery to be switched off, allowing the low-voltage battery to be charged via the mains battery, thus extending the time before the vehicle can be restarted.
  • this method requires active user intervention, which is subject to uncertainty such as forgetting to activate the battery.
  • this method only works if the vehicle is not completely discharged and can be remotely started/powered on; if the vehicle is already discharged, the method will not be effective.
  • This invention proposes a method for replenishing the low-voltage battery of a vehicle.
  • this method eliminates the need for active user intervention.
  • the vehicle's T-BOX automatically detects the battery level and triggers low-voltage replenishment, effectively solving the problem of battery discharge after long-term parking, reducing the risk of users being unable to use their vehicles, and improving the user experience.
  • the present invention proposes a method for replenishing a low-voltage battery in a vehicle, comprising:
  • the low-voltage power replenishment trigger conditions include the vehicle's battery voltage being less than a preset voltage and the number of power replenishment cycles in a single power-down cycle not exceeding a preset number.
  • the sleep time is obtained so that the sleep CAN network can be woken up when the sleep time meets the wake-up time.
  • a low-voltage power replenishment request is sent to replenish the vehicle's power.
  • a low-voltage battery charging device for vehicles comprising:
  • the detection module is used to detect whether the vehicle's CAN network is in a sleep state after the vehicle is powered off.
  • the judgment module is used to determine whether the vehicle meets the low-voltage power replenishment trigger conditions when the CAN network is not in a sleep state.
  • the low-voltage power replenishment trigger conditions include the vehicle's battery voltage being less than a preset voltage and the number of power replenishment cycles in a single power-down cycle not exceeding a preset number.
  • the acquisition module is used to acquire the sleep time when the CAN network is in a sleep state, so as to wake up the sleep CAN network when the sleep time meets the wake-up time.
  • the power replenishment module is used to send a low-voltage power replenishment request to replenish the vehicle's power when the vehicle meets the low-voltage power replenishment triggering conditions or when the CAN network in a dormant state is woken up.
  • an electronic device including a processor and a memory, wherein the memory stores computer program instructions, which are executed by the processor to perform the vehicle low-voltage battery charging method described above.
  • a storage medium is also proposed, on which program instructions are stored.
  • program instructions When the program instructions are run, they are used to execute the vehicle low-voltage battery charging method described above.
  • the vehicle's CAN network is in a dormant state. If the CAN network is not in a dormant state, it is determined whether the vehicle meets the low-voltage power replenishment triggering conditions. These conditions include the vehicle's battery voltage being lower than a preset voltage and the number of power replenishment cycles during a single power-off not exceeding a preset number. If the CAN network is in a dormant state, the dormant time is acquired to wake up the dormant CAN network when the dormant time meets the wake-up time.
  • a low-voltage power replenishment request is sent to replenish the vehicle's power. Therefore, based on voltage and time methods, without user intervention, the vehicle's battery charge can be automatically detected and determined by the onboard T-BOX to trigger low-voltage power replenishment. This effectively solves the problem of battery depletion after long-term vehicle parking, reduces the risk of users being unable to use the vehicle, and improves the user experience.
  • Figure 1 shows a schematic flowchart of a method for replenishing a vehicle low-voltage battery according to an embodiment of the present invention
  • Figure 2 shows a schematic flowchart of a vehicle low-voltage battery charging process according to another embodiment of the present invention.
  • Figure 3 shows a schematic block diagram of a vehicle low-voltage battery charging device according to an embodiment of the present invention.
  • Figure 4 shows a schematic block diagram of an electronic device according to an embodiment of the present invention.
  • Figure 1 shows a schematic flowchart of a vehicle low-voltage battery replenishment method 100 according to an embodiment of the present invention. As shown in Figure 1, method 100 may include the following steps:
  • Step S110 After the vehicle is powered off, check whether the vehicle's CAN network is in a sleep state.
  • FIG. 2 shows a schematic flowchart of low-voltage battery charging for a vehicle according to another embodiment of the present invention.
  • the vehicle is considered to be powered down when it switches from the ON to the OFF position.
  • the vehicle communication box (T-BOX) prepares to enter CAN sleep mode.
  • a timer is started at this time. When the timer reaches the set time, for example, 20 minutes, the T-BOX starts to determine whether the CAN network has entered sleep mode.
  • Step S120 When the CAN network is not in a dormant state, determine whether the vehicle meets the low-voltage power replenishment trigger conditions.
  • the low-voltage power replenishment trigger conditions include that the vehicle's battery voltage is less than a preset voltage and the number of power replenishment cycles in a single power-down cycle does not exceed a preset number.
  • the CAN network checks whether the vehicle's battery voltage is lower than a preset voltage, such as 12.6V, and whether the number of times a single power-down cycle can be replenished does not exceed a preset number, such as 7 times.
  • a preset voltage such as 12.6V
  • Step S130 When the CAN network is in a sleep state, obtain the sleep time so as to wake up the sleep CAN network when the sleep time meets the wake-up time.
  • the sleep time is obtained. Specifically, the T-BOX determines whether the vehicle has been in sleep mode for 5 consecutive days. If it has been in sleep mode for 5 consecutive days, the sleep time is considered to meet the wake-up time. In this case, the T-BOX wakes up the sleep CAN network. Note that 5 days is merely an example and does not imply a limitation on the wake-up time. In practical applications, the wake-up time can be rationally set according to specific needs. If the vehicle has not been in sleep mode for 5 consecutive days, the T-BOX determines whether the CAN network has been woken up during this period. If it has been woken up, the timer operation is returned to the above steps. Specifically, the timer is reset to zero, and a new timer operation is started. If the vehicle has not been woken up, the determination of whether the vehicle has been in sleep mode for 5 consecutive days is repeated.
  • Step S140 When the vehicle meets the low-voltage power replenishment triggering conditions or the CAN network in a dormant state is woken up, a low-voltage power replenishment request is sent to replenish the vehicle's power.
  • the T-BOX sends a low-voltage power replenishment request CAN signal.
  • the new energy power domain controller controls the OFF high voltage on the vehicle to replenish the vehicle's battery.
  • the vehicle's CAN network is in a dormant state. If the CAN network is not in a dormant state, it is determined whether the vehicle meets the low-voltage power replenishment triggering conditions. These conditions include the vehicle's battery voltage being lower than a preset voltage and the number of power replenishment cycles during a single power-off not exceeding a preset number. If the CAN network is in a dormant state, the dormant time is acquired to wake up the dormant CAN network when the dormant time meets the wake-up time.
  • a low-voltage power replenishment request is sent to replenish the vehicle's power. Therefore, based on voltage and time methods, without user intervention, the vehicle's battery charge can be automatically detected and determined by the onboard T-BOX to trigger low-voltage power replenishment. This effectively solves the problem of battery depletion after long-term vehicle parking, reduces the risk of users being unable to use the vehicle, and improves the user experience.
  • step S140 sending a low-voltage charging request to charge the vehicle, may include:
  • Step S141 When the duration of sending the low-voltage power replenishment request exceeds a preset time threshold, determine whether the current state is in the power replenishment state.
  • a low-voltage charging request can be continuously sent.
  • a preset time threshold such as 12 seconds
  • the T-BOX can be used to determine whether the PDCU's charging state has switched to the charging state "1:12V charging".
  • Step S142 If the device is in the power replenishment state, start the first timing operation and continuously monitor the power replenishment state during the execution of the first timing operation.
  • the T-BOX will start the first timing operation. Specifically, the timing operation can be preset to 60 minutes, and the timing mode is countdown. During the 60-minute countdown, the T-BOX will continuously judge the CAN signal value of the PDCU's 12V charging status to achieve continuous monitoring of the charging status.
  • Step S143 If the system is not in a power replenishment state, determine that the low-voltage power replenishment request response has failed.
  • the "low voltage charging failure counter" of T-BOX will increment by 1, indicating that the low voltage charging request response has failed.
  • Step S144 Based on the power replenishment status and the number of failed low-voltage power replenishment request responses, determine whether to end the low-voltage power replenishment process.
  • the current state of power replenishment can be determined by whether the CAN signal "12V charging" is equal to 1.
  • the number of low-voltage power replenishment request response failures can also be determined. For example, when the number of low-voltage power replenishment request response failures exceeds a preset number, such as 3 times, the low-voltage power replenishment process can be terminated. Otherwise, the process can return to the CAN network wake-up step and restart a new round of low-voltage power replenishment operation.
  • the power replenishment status is continuously monitored, including:
  • the low-voltage power replenishment process can be terminated if the number of power replenishment failures exceeds a preset threshold, such as three times. If the number of power replenishment failures does not exceed the preset threshold, a new low-voltage power replenishment request is sent to begin a new round of power replenishment. Specifically, the process can return to the CAN network wake-up step to restart a new round of low-voltage power replenishment.
  • the method may also include controlling the CAN network to hibernate each time a successful power-up occurs during a single power-down.
  • the T-BOX can set the low-voltage power replenishment request to 0, stop sending messages, and control the CAN network to enter a sleep state. After waiting for, for example, 10 minutes after entering sleep mode, the CAN network can be woken up again.
  • the T-BOX after the T-BOX is about to enter sleep mode, it continuously monitors whether the CAN network is in sleep mode. As mentioned above, if the CAN network is in sleep mode and has been in sleep mode for 5 days, it will wake up the sleep CAN network and then send a new low-voltage power replenishment request to restart the next round of low-voltage power replenishment process.
  • the method may further include: clearing the power failure signal each time a power-up success is achieved during a single power-down period.
  • the T-BOX can reset the low-voltage power replenishment failure counter to clear the power replenishment failure signal.
  • the method may also include: clearing the power-on success signal and the power-on failure signal after the vehicle is powered on.
  • both the low-voltage power-up success counter and the low-voltage power-up failure counter can be cleared to eliminate the power-up failure signal and the power-up success signal. This prevents the power-up failure or error from being caused by the power-up success signal and the power-up failure signal from the previous low-voltage power-up process during the current low-voltage power-up process after the vehicle is powered off again.
  • the method may further include:
  • the battery voltage is filtered.
  • Battery voltage can be filtered using any existing or future filtering operation to remove invalid or interfering components.
  • the average voltage over a continuous preset time period is obtained.
  • the average voltage over a continuous preset time period such as 10 seconds is obtained. If the average voltage over 10 seconds is lower than the preset voltage, it is determined that the battery voltage at that time is lower than the preset voltage.
  • Utilizing the average voltage over a continuous preset time period can prevent the low-voltage charging process from being affected by external interference or detection errors, thus reducing the randomness of voltage acquisition errors and improving the reliability of low-voltage charging.
  • FIG3 shows a schematic block diagram of a vehicle low-voltage battery charging device 300 according to an embodiment of the present invention.
  • the device 300 may include: a detection module 310, a judgment module 320, an acquisition module 330, and a charging module 340.
  • the detection module 310 is used to detect whether the vehicle's CAN network is in a sleep state after the vehicle is powered off.
  • the judgment module 320 is used to determine whether the vehicle meets the low-voltage power replenishment trigger conditions when the CAN network is not in a sleep state.
  • the low-voltage power replenishment trigger conditions include the vehicle's battery voltage being less than a preset voltage and the number of power replenishment cycles in a single power-down cycle not exceeding a preset number.
  • the acquisition module 330 is used to acquire the sleep time when the CAN network is in a sleep state, so as to wake up the sleep CAN network when the sleep time meets the wake-up time.
  • the power replenishment module 340 is used to send a low-voltage power replenishment request to replenish the vehicle when the vehicle meets the low-voltage power replenishment triggering conditions or when the CAN network in a dormant state is woken up.
  • FIG4 shows a schematic block diagram of an electronic device 400 according to an embodiment of the present invention.
  • the electronic device 400 may include a processor 410 and a memory 420.
  • the memory 420 stores computer program instructions, which, when executed by the processor 410, are used to perform the vehicle low-voltage battery charging method described above.
  • a storage medium is also provided, on which program instructions are stored, which, when executed, are used to perform the vehicle low-voltage battery charging method described above.
  • the storage medium may, for example, include a storage component of a tablet computer, a hard disk of a computer, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a portable compact disc read-only memory (CD-ROM), a USB memory, or any combination of the above storage media.
  • the computer-readable storage medium may be any combination of one or more computer-readable storage media.
  • the disclosed apparatus and/or device can be implemented in other ways.
  • the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods.
  • multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.
  • the units described as separate components may or may not be physically separate.
  • the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
  • the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
  • the integrated unit can be implemented in hardware or as a software functional unit.
  • the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application.
  • the aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

本发明提供一种车辆低压蓄电池补电方法及相关设备，涉及电动汽车充电技术领域，方法包括：在车辆下电后，检测车辆的CAN网络是否处于休眠状态；在CAN网络未处于休眠状态时，判断车辆是否满足低压补电触发条件，其中，低压补电触发条件包括车辆的蓄电池电压小于预设电压以及单次下电循环补电次数不超过预设次数；在CAN网络处于休眠状态时，获取休眠时间，以在休眠时间满足唤醒时间时唤醒休眠的CAN网络；在车辆满足低压补电触发条件或处于休眠状态的CAN网络被唤醒时，发送低压补电请求，以对车辆进行补电。

Description

车辆低压蓄电池补电方法及相关设备
相关申请的交叉引用
本申请实施例基于申请号为202410713077.7、申请日为2024年06月04日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请实施例作为参考。
技术领域
本发明涉及电动汽车充电技术领域，更具体地，涉及一种车辆低压蓄电池补电方法、一种车辆低压蓄电池补电装置、一种电子设备以及一种存储介质。
 背景技术
车辆长期静置之后，可能由于整车暗电流消耗而导致低压蓄电池的电量降低，从而产生车辆不能正常启动的风险。
为了解决上述问题，现有技术在满足条件时，通过手机APP等通讯方式将控制车辆启动/上电指令发送给车载通信盒子，利用车载通信盒子与车端进行交互，控制请求车辆上OFF高压，通过动力电池给低压蓄电池充电，以延长车辆静置后再启动的时间。
然而上述技术方案需要用户主动触发，存在遗忘等不确定性，并且该方案能够执行的前提是车辆没有亏电，还能够远程启动/上电，一旦车辆已经亏电，该方案不会生效。
因此，亟需一种新的技术方案以解决上述技术问题。
 发明内容
现有技术中在车辆长期静置之后通过手机APP等通讯方式将控制车辆启动/上电指令发送给车载通信盒子，利用车载通信盒子与车端进行交互，控制请求车辆上OFF高压，通过动力电池给低压蓄电池充电，以延长车辆静置后再启动的时间。而该方案需要用户主动触发，存在遗忘等不确定性，并且该方案能够执行的前提是车辆没有亏电，还能够远程启动/上电，一旦车辆已经亏电，该方案不会生效。本发明提出一种车辆低压蓄电池补电方法，通过电压法和时间法，无需用户主动触发，通过车载T-BOX自动检测车辆蓄电池电量，从而触发低压补电，有效解决了长期停放车辆后蓄电池亏电问题，减少了用户无法用车的风险，提高了用户的用车体验。
在发明内容部分中引入了一系列简化形式的概念，这将在具体实施方式部分中进一步详细说明。本发明的发明内容部分并不意味着要试图限定出所要求保护的技术方案的关键特征和必要技术特征，更不意味着试图确定所要求保护的技术方案的保护范围。
第一方面，本发明提出了一种车辆低压蓄电池补电方法，包括：
在车辆下电后，检测车辆的CAN网络是否处于休眠状态；
在CAN网络未处于休眠状态时，判断车辆是否满足低压补电触发条件，其中，低压补电触发条件包括车辆的蓄电池电压小于预设电压以及单次下电循环补电次数不超过预设次数；
在CAN网络处于休眠状态时，获取休眠时间，以在休眠时间满足唤醒时间时唤醒休眠的CAN网络；
在车辆满足低压补电触发条件或处于休眠状态的CAN网络被唤醒时，发送低压补电请求，以对车辆进行补电。
第二方面，还提出了一种车辆低压蓄电池补电装置，包括：
检测模块，用于在车辆下电后，检测车辆的CAN网络是否处于休眠状态；
判断模块，用于在CAN网络未处于休眠状态时，判断车辆是否满足低压补电触发条件，其中，低压补电触发条件包括车辆的蓄电池电压小于预设电压以及单次下电循环补电次数不超过预设次数；
获取模块，用于在CAN网络处于休眠状态时，获取休眠时间，以在休眠时间满足唤醒时间时唤醒休眠的CAN网络；
补电模块，用于在车辆满足低压补电触发条件或处于休眠状态的CAN网络被唤醒时，发送低压补电请求，以对车辆进行补电。
第三方面，还提出了一种电子设备，包括处理器和存储器，其中，存储器中存储有计算机程序指令，计算机程序指令被处理器运行时用于执行如上所述车辆低压蓄电池补电方法。
第四方面，还提出了一种存储介质，在存储介质上存储了程序指令，程序指令在运行时用于执行如上所述车辆低压蓄电池补电方法。
根据上述技术方案，在车辆下电后，检测车辆的CAN网络是否处于休眠状态；在CAN网络未处于休眠状态时，判断车辆是否满足低压补电触发条件，其中，低压补电触发条件包括车辆的蓄电池电压小于预设电压以及单次下电循环补电次数不超过预设次数；在CAN网络处于休眠状态时，获取休眠时间，以在休眠时间满足唤醒时间时唤醒休眠的CAN网络；在车辆满足低压补电触发条件或处于休眠状态的CAN网络被唤醒时，发送低压补电请求，以对车辆进行补电。由此，可以基于电压法和时间法，无需用户主动触发，通过车载T-BOX自动检测判断车辆蓄电池的电量，从而触发低压补电，有效解决了长期停放车辆后蓄电池亏电问题，减少了用户无法用车的风险，提高了用户的用车体验。
本发明的车辆低压蓄电池补电方法，本发明的其它优点、目标和特征将部分通过下面的说明体现，部分还将通过对本发明的研究和实践而为本领域的技术人员所理解。
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此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
通过阅读下文示例性实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出示例性实施方式的目的，而并不认为是对本申请的限制。而且在整个附图中，用相同的参考符号表示相同的部件。附图中：
图1示出了根据本发明一个实施例的车辆低压蓄电池补电方法的示意性流程图；
图2示出了根据本发明另一个实施例的车辆低压蓄电池补电的示意性流程图；以及
图3示出了根据本发明一个实施例的车辆低压蓄电池补电装置的示意性框图；以及
图4示出了根据本发明一个实施例的电子设备的示意性框图。
 本发明的实施方式
为了能够更清楚地理解本申请的上述目的、特征和优点，下面将对本申请的方案进行进一步描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等（如果存在）是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。
在下面的描述中阐述了很多具体细节以便于充分理解本申请，但本申请还可以采用其他不同于在此描述的方式来实施；显然，说明书中的实施例只是本申请的一部分实施例，而不是全部的实施例。
为了解决上述技术问题，根据本申请的第一方面，提出了一种车辆低压蓄电池补电方法。图1示出了根据本发明一个实施例的车辆低压蓄电池补电方法100的示意性流程图。如图1所示，方法100可以包括以下步骤：
步骤S110，在车辆下电后，检测车辆的CAN网络是否处于休眠状态。
图2示出了根据本发明另一个实施例的车辆低压蓄电池补电的示意性流程图，如图2所示，在车辆从ON挡切换到OFF挡可以认为车辆下电。此时车载通信盒子（T-BOX）准备进入CAN休眠状态，优选地，此时开启计时器，当计时器到达所计时间，例如20分钟，T-BOX开始判断CAN网络是否进入休眠。
步骤S120，在CAN网络未处于休眠状态时，判断车辆是否满足低压补电触发条件，其中，低压补电触发条件包括车辆的蓄电池电压小于预设电压以及单次下电循环补电次数不超过预设次数。
若CAN网络未休眠，此时判断车辆的蓄电池电压是否小于预设电压例如12.6V，以及单次下电循环补电次数是否不超过预设次数例如7次。
步骤S130，在CAN网络处于休眠状态时，获取休眠时间，以在休眠时间满足唤醒时间时唤醒休眠的CAN网络。
若CAN网络已经休眠，则获取休眠时间，具体地，T-BOX判断车辆是否持续5天休眠，若持续5天休眠，可以认为休眠时间满足唤醒时间，此时T-BOX唤醒休眠的CAN网络，其中，5天仅仅是示例性的，并不意味着对唤醒时间的限定，在实际应用过程中可以根据具体需求对唤醒时间进行合理化设置。若未持续休眠5天，T-BOX判断此期间CAN网络是否有被唤醒，若有被唤醒，则返回上述计时器计时操作，具体地，将计时器所计时间清零，重新开始新的计时操作。若一直未被唤醒，则重新判断车辆是否持续5天休眠。
步骤S140，在车辆满足低压补电触发条件或处于休眠状态的CAN网络被唤醒时，发送低压补电请求，以对车辆进行补电。
若通过上述低压补电触发条件判断后确定车辆满足低压补电触发条件，或者是处于休眠状态的CAN网络被唤醒时，T-BOX发出低压补电请求CAN信号，此时，新能源动力域控制器（PDCU）控制车辆上OFF高压对车辆的蓄电池进行补电。
根据上述技术方案，在车辆下电后，检测车辆的CAN网络是否处于休眠状态；在CAN网络未处于休眠状态时，判断车辆是否满足低压补电触发条件，其中，低压补电触发条件包括车辆的蓄电池电压小于预设电压以及单次下电循环补电次数不超过预设次数；在CAN网络处于休眠状态时，获取休眠时间，以在休眠时间满足唤醒时间时唤醒休眠的CAN网络；在车辆满足低压补电触发条件或处于休眠状态的CAN网络被唤醒时，发送低压补电请求，以对车辆进行补电。由此，可以基于电压法和时间法，无需用户主动触发，通过车载T-BOX自动检测判断车辆蓄电池的电量，从而触发低压补电，有效解决了长期停放车辆后蓄电池亏电问题，减少了用户无法用车的风险，提高了用户的用车体验。
可选地，步骤S140发送低压补电请求，以对车辆进行补电可以包括：
步骤S141，在发送低压补电请求的持续时间超过预设时间阈值时，确定目前是否处于正在补电状态。
示例性地，可以持续发送低压补电请求，当低压补电请求的持续时间超过预设时间阈值，例如12秒时，确定PDCU的补电状态是否处于正在补电状态，具体地，可以利用T-BOX判断PDCU的补电状态是否切换到正在补电状态“1:12V charging”。
步骤S142，若处于正在补电状态，开始执行第一计时操作，并在执行第一计时操作过程中持续监测补电状态。
若已经切换到“1:12V charging”，T-BOX开始执行第一计时操作，具体地，第一计时操作所计时间可以预设为60分钟，计时模式为倒计时，在60分钟倒计时内，T-BOX持续判断PDCU的12V补电状态的CAN信号值，实现补电状态的持续监测。
步骤S143，若未处于正在补电状态，确定低压补电请求响应失败。
若未切换到“1:12V charging”，可以确定当前未处于正在补电状态，此时T-BOX的“低压补电失败计数器”+1，确定低压补电请求响应失败。
步骤S144，基于补电状态和低压补电请求响应失败次数，判断是否结束低压补电过程。
根据前文所述，可以根据CAN信号“12V charging”是否等于1确定当下是否处于正在补电状态，同时还可以确定低压补电请求响应失败次数，示例性地，当低压补电请求响应失败次数超过预设次数例如3次时，可以结束低压补电过程，反之，则可以返回到CAN网络唤醒步骤，重新开始新一轮的低压补电操作。
可选地，在执行第一计时操作过程中持续监测补电状态，包括：
获取补电状态信号，以将正在补电状态的信号和补电完成状态的信号确定为补电成功信号，将没有补电电源输入状态的信号和出现补电错误的信号确定为补电失败信号。
例如，当CAN值=“0：no 12V charging”时，可以确定当前处于没有补电电源输入状态，当CAN值=“3：12V charging error”时，可以确定当前处于补电错误状态，上述两种状态信号均为补电失败信号，此时T-BOX的“低压补电失败计数器”+1。当CAN值=“2:12V charging finish”时，可以确定当前处于补电完成状态，当CAN值=“1:12V charging”时，可以确定当前处于正在补电状态，上述两种状态信号均为补电成功信号，此时T-BOX的“低压补电成功计数器”+1。
在补电失败次数超过预设补电失败次数阈值例如3次时，可以结束低压补电过程。在补电失败次数未超过预设补电失败次数阈值时，发送新的低压补电请求以开始新一轮补电。具体地，可以返回到CAN网络唤醒步骤，重新开始新一轮的低压补电操作。
可选地，方法还可以包括：在单次下电期间，每增加一次补电成功次数时，控制CAN网络休眠。
示例性地，在每次低压补电成功时，T-BOX可以将低压补电请求置0，停发报文，控制CAN网络进入休眠状态。在休眠后等待例如10分钟后，可以再次唤醒CAN网络。
可选地，T-BOX准备进入休眠状态后，持续检测CAN网络是否处于休眠状态，结合前文所述，在CAN网络处于休眠状态并且持续休眠5天时唤醒休眠的CAN网络，之后再发送新的低压补电请求，重新开始下一轮低压补电过程。
可选地，方法还可以包括：在单次下电期间，每增加一次补电成功次数时，清除补电失败信号。
示例性地，在每次低压补电成功后，T-BOX可以将低压补电失败计数器清零，以清除补电失败信号。
由此可以避免发生虽然低压补电成功，但补电失败次数到达预设失败次数阈值而导致低压补电过程提前结束，影响蓄电池补电电量而影响后续用户正常用车。
可选地，方法还可以包括：在车辆上电后，清除补电成功信号和补电失败信号。
示例性地，在车辆每次上电后，可以将低压补电成功计数器和低压补电失败计数器均清零，以清除补电失败信号和补电成功信号，避免在车辆再次下电后的此次执行低压补电过程中出现由于上一次低压补电过程中的补电成功信号和补电失败信号对此次低压补电过程的影响，导致补电失败或错误等。
可选地，在判断车辆是否满足低压补电触发条件之前，方法还可以包括：
在获取车辆的蓄电池电压后，对蓄电池电压进行滤波处理。
可以利用任何现有的或未来的滤波操作对蓄电池电压进行滤波处理，以过滤掉其中的无效或干扰部分。
基于滤波处理后的电压，获取连续预设时间段内的平均电压。
在对蓄电池电压进行滤波处理后，获取连续预设时间段例如10秒内的平均电压。当持续10秒内的平均电压小于预设电压时，确定此时的蓄电池电压小于预设电压。
由此，可以获得更准确的蓄电池电压，而利用连续预设时间段的平均电压可以避免获取的蓄电池电压由于外界干扰或检测错误等情况出现电压准确度较低而导致低压补电过程受到影响，减小获取电压错误的偶然性，提升低压补电的可靠性。
根据本发明的第二方面，还提出了一种车辆低压蓄电池补电装置。图3示出了根据本发明一个实施例的车辆低压蓄电池补电装置300的示意性框图。如图3所示，装置300可以包括：检测模块310、判断模块320、获取模块330以及补电模块340。
检测模块310，用于在车辆下电后，检测车辆的CAN网络是否处于休眠状态；
判断模块320，用于在CAN网络未处于休眠状态时，判断车辆是否满足低压补电触发条件，其中，低压补电触发条件包括车辆的蓄电池电压小于预设电压以及单次下电循环补电次数不超过预设次数；
获取模块330，用于在CAN网络处于休眠状态时，获取休眠时间，以在休眠时间满足唤醒时间时唤醒休眠的CAN网络；
补电模块340，用于在车辆满足低压补电触发条件或处于休眠状态的CAN网络被唤醒时，发送低压补电请求，以对车辆进行补电。
根据本发明的第三方面，还提供了一种电子设备。图4示出了根据本发明一个实施例的电子设备400的示意性框图。如图4所示，电子设备400可以包括处理器410和存储器420。其中，存储器420中存储有计算机程序指令，计算机程序指令被处理器410运行时用于执行如上所述车辆低压蓄电池补电方法。
根据本发明的第四方面，还提供了一种存储介质，在存储介质上存储了程序指令，程序指令在运行时用于执行如上所述车辆低压蓄电池补电方法。存储介质例如可以包括平板电脑的存储部件、计算机的硬盘、只读存储器(ROM)、可擦除可编程只读存储器(EPROM)、便携式紧致盘只读存储器(CD-ROM)、USB存储器、或者上述存储介质的任意组合。所述计算机可读存储介质可以是一个或多个计算机可读存储介质的任意组合。
本领域普通技术人员通过阅读上述有关车辆低压蓄电池补电方法的相关描述可以理解车辆低压蓄电池补电装置、电子设备以及存储介质的具体细节以及有益效果，为了简洁在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和/或设备，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通讯连接可以是通过一些接口，装置或单元的间接耦合或通讯连接，可以是电性，机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）执行本申请各个实施例方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器（Read-Only Memory，ROM）、随机存取存储器（Random Access Memory，RAM）、磁碟或者光盘等各种可以存储程序代码的介质。
以上，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (10)

  1. 一种车辆低压蓄电池补电方法，应用于车辆的电子设备中，包括：
    在所述车辆下电后，检测所述车辆的CAN网络是否处于休眠状态；
    在所述CAN网络未处于所述休眠状态时，判断所述车辆是否满足低压补电触发条件，其中，所述低压补电触发条件包括所述车辆的蓄电池电压小于预设电压以及单次下电循环补电次数不超过预设次数；
    在所述CAN网络处于所述休眠状态时，获取休眠时间，以在所述休眠时间满足唤醒时间时唤醒休眠的CAN网络；
    在所述车辆满足所述低压补电触发条件或所述处于休眠状态的CAN网络被唤醒时，发送低压补电请求，以对所述车辆进行补电。
  2. 如权利要求1所述的车辆低压蓄电池补电方法，其中，所述发送低压补电请求，以对所述车辆进行补电，包括：
    在发送所述低压补电请求的持续时间超过预设时间阈值时，确定目前是否处于正在补电状态；
    若处于所述正在补电状态，开始执行第一计时操作，并在执行所述第一计时操作过程中持续监测补电状态；
    若未处于所述正在补电状态，确定所述低压补电请求响应失败；
    基于所述补电状态和所述低压补电请求响应失败次数，判断是否结束所述低压补电过程。
  3. 如权利要求2所述的车辆低压蓄电池补电方法，其中，所述在执行所述第一计时操作过程中持续监测补电状态，包括：
    获取补电状态信号，以将所述正在补电状态的信号和补电完成状态的信号确定为补电成功信号，将没有补电电源输入状态的信号和出现补电错误的信号确定为补电失败信号；
    所述方法还包括：
    在所述第一计时操作结束后，基于所述补电成功信号、所述补电失败信号和所述未处于正在补电状态的信号，确定补电失败次数和/或补电成功次数；
    在所述补电失败次数超过预设补电失败次数阈值时，结束所述低压补电过程；
    在所述补电失败次数未超过所述预设补电失败次数阈值时，发送新的低压补电请求以开始新一轮补电。
  4. 如权利要求3所述的车辆低压蓄电池补电方法，其中，所述方法还包括：
    在单次下电期间，每增加一次所述补电成功次数时，控制所述CAN网络休眠；
    持续检测所述CAN网络是否处于所述休眠状态，以在所述CAN网络处于所述休眠状态并且所述休眠时间满足唤醒时间时唤醒休眠的CAN网络后重新开始下一轮低压补电过程。
  5. 如权利要求3所述的车辆低压蓄电池补电方法，其中，所述方法还包括：
    在单次下电期间，每增加一次所述补电成功次数时，清除所述补电失败信号。
  6. 如权利要求3所述的车辆低压蓄电池补电方法，其中，所述方法还包括：
    在所述车辆上电后，清除所述补电成功信号和所述补电失败信号。
  7. 如权利要求1所述的车辆低压蓄电池补电方法，其中，在所述判断所述车辆是否满足低压补电触发条件之前，所述方法还包括：
    在获取所述车辆的蓄电池电压后，对所述蓄电池电压进行滤波处理；
    基于所述滤波处理后的电压，获取连续预设时间段内的平均电压；
    所述方法还包括：
    在所述平均电压小于所述预设电压时，确定所述蓄电池电压小于所述预设电压。
  8. 一种车辆低压蓄电池补电装置，包括：
    检测模块，用于在所述车辆下电后，检测所述车辆的CAN网络是否处于休眠状态；
    判断模块，用于在所述CAN网络未处于所述休眠状态时，判断所述车辆是否满足低压补电触发条件，其中，所述低压补电触发条件包括所述车辆的蓄电池电压小于预设电压以及单次下电循环补电次数不超过预设次数；
    获取模块，用于在所述CAN网络处于所述休眠状态时，获取休眠时间，以在所述休眠时间满足唤醒时间时唤醒休眠的CAN网络；
    补电模块，用于在所述车辆满足所述低压补电触发条件或所述处于休眠状态的CAN网络被唤醒时，发送低压补电请求，以对所述车辆进行补电。
  9. 一种电子设备，包括处理器和存储器，其中，所述存储器中存储有计算机程序指令，所述计算机程序指令被所述处理器运行时用于执行如权利要求1至7任一项所述车辆低压蓄电池补电方法。
  10. 一种存储介质，在所述存储介质上存储了程序指令，所述程序指令在运行时用于执行如权利要求1至7任一项所述车辆低压蓄电池补电方法。
PCT/CN2024/138129 2024-06-04 2024-12-10 车辆低压蓄电池补电方法及相关设备 Pending WO2025251572A1 (zh)

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