Starting battery power preservation method, device, vehicle-mounted equipment, vehicle and storage medium

Abstract

The present application discloses a method, device, vehicle-mounted equipment, vehicle and storage medium for preserving power of a starting battery, the method comprising: obtaining a minimum temperature group in a preset number of days after the current system time; if the minimum temperature group includes at least one minimum temperature below the temperature threshold, based on the date difference between the date corresponding to at least one minimum temperature below the temperature threshold and the current system time, selecting a first minimum temperature from at least one minimum temperature below the temperature threshold; determining a time interval based on the highest temperature time period in the day before the date corresponding to the first minimum temperature and the current system time; if the time interval is greater than or equal to the first value, starting the timing from the current system time, when the continuous timing duration is equal to the time interval, controlling the starting battery to enter a charging state. This solution can charge the starting battery in advance to ensure that when extremely low temperatures occur, the starting battery has sufficient power to meet the ignition requirements.

Description

Technical Field

[0001] The present invention generally relates to the field of vehicle technology, and in particular to a method and device for preserving power of a starter battery, a vehicle-mounted device, a vehicle and a storage medium. Background Art

[0002] Starting batteries are widely used in cars, motorcycles or electric vehicles, especially when ignition is needed to start the above-mentioned vehicles. Starting batteries make people's lives more convenient when they go out.

[0003] Starting batteries, currently the industry generally uses lead-acid batteries or lithium iron phosphate batteries, which are greatly affected by low temperatures, especially in extremely low temperatures. If the vehicle is stationary for a long time, considering the self-discharge of the starting battery and the static power consumption of the entire vehicle, the starting battery is prone to power feeding, resulting in limited battery charging and discharging capabilities, a sudden drop in the battery cell voltage, and the risk of the vehicle being unable to start / ignite. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a method, device, vehicle-mounted equipment, vehicle and storage medium for preserving power of a starting battery.

[0005] In a first aspect, the present invention provides a method for preserving power of a starting battery, the method comprising:

[0006] Get the lowest temperature group in the preset days after the current system time, the lowest temperature group includes the lowest temperature corresponding to each date in the preset days;

[0007] If the minimum temperature group includes at least one minimum temperature below the temperature threshold, based on the date difference between the date corresponding to the at least one minimum temperature below the temperature threshold and the current system time, selecting a first minimum temperature from the at least one minimum temperature below the temperature threshold;

[0008] Determine the time interval according to the highest temperature period of the day before the date corresponding to the first lowest temperature and the current system time;

[0009] If the time interval is greater than or equal to the first value, timing starts from the current system time, and when the continuous timing duration is equal to the time interval, the startup battery is controlled to enter a charging state.

[0010] In one embodiment, the method further comprises:

[0011] If the time interval is less than the first value, timing starts from the current system time, and when the continuous timing duration is equal to the second value, the startup battery is controlled to enter the charging state.

[0012] In one embodiment, starting from the current system time, when the continuous timing duration is equal to a second value, controlling the startup battery to enter a charging state includes:

[0013] Start timing from the current system time, and when the continuous timing duration is equal to the second value, obtain the total voltage of the starting battery;

[0014] If the total voltage of the starting battery is less than or equal to the total voltage threshold, the starting battery is controlled to enter a charging state.

[0015] In one embodiment, controlling the starting battery to enter a charging state includes:

[0016] The charging unit is controlled to charge the starting battery so that the starting battery enters a charging state.

[0017] In one of the embodiments, when the starting battery is applied to a fuel vehicle, the charging unit includes an engine;

[0018] When the starting battery is applied to an electric vehicle, the charging unit includes a power battery and a high-voltage DC to low-voltage DC converter.

[0019] In one embodiment, the method further includes: determining the charging time of charging the startup battery by the following steps:

[0020] Obtain the starting battery temperature, the discharge power of the high voltage DC to low voltage DC converter, and the nominal capacity of the starting battery;

[0021] Determine the charging time based on the starting battery temperature, the discharge power of the high voltage DC to low voltage DC converter and the nominal capacity of the starting battery;

[0022] or

[0023] Obtain the current ambient temperature of the starting battery, the discharge power of the high-voltage DC to low-voltage DC converter, and the nominal capacity of the starting battery;

[0024] The charging time is determined based on the current ambient temperature of the starting battery, the discharge power of the high-voltage DC to low-voltage DC converter, and the nominal capacity of the starting battery.

[0025] In one embodiment, determining the time interval according to the highest temperature time period on the day before the date corresponding to the first lowest temperature and the current system time includes:

[0026] Get the first date corresponding to the first minimum temperature;

[0027] Get the highest temperature period on the day before the first date;

[0028] The time period interval is determined based on the highest temperature period on the first date, the day before the first date, and the current system time.

[0029] In one of the embodiments, during the timing process, if it is detected that the starting battery is in a charging state, the timing is stopped.

[0030] In a second aspect, the present invention provides a starting battery protection device, the device comprising:

[0031] An acquisition module is used to acquire a minimum temperature group in a preset number of days after the current system time, wherein the minimum temperature group includes the minimum temperature corresponding to each date in the preset number of days;

[0032] A selection module, configured to select a first minimum temperature from at least one minimum temperature below the temperature threshold based on a date difference between a date corresponding to at least one minimum temperature below the temperature threshold and a current system time if the minimum temperature group includes at least one minimum temperature below the temperature threshold;

[0033] A determination module, used to determine the time interval according to the highest temperature period in the day before the date corresponding to the first lowest temperature and the current system time;

[0034] The control module is used to start timing from the current system time if the time interval is greater than or equal to the first value, and when the continuous timing duration is equal to the time interval, control the startup battery to enter a charging state.

[0035] In a third aspect, the present invention provides a vehicle-mounted device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the startup battery power preservation method of the first aspect is implemented.

[0036] In a fourth aspect, the present invention provides a vehicle, comprising the vehicle-mounted device of the third aspect.

[0037] In a fifth aspect, the present invention provides a readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the startup battery power preservation method as in the first aspect.

[0038] The embodiments of the present application provide a method, device, on-board equipment, vehicle and storage medium for preserving a starting battery. The solution obtains weather forecast information for a preset number of days after the current system time, predicts the low temperature conditions for a preset number of days in the future in advance, and charges the starting battery in advance based on the predicted temperature to ensure that the starting battery has sufficient power to meet ignition requirements when extremely low temperatures occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0040] Figure 1 A schematic diagram of a process of starting a battery protection method provided by an embodiment of the present invention;

[0041] Figure 2 Another schematic diagram of a process of starting a battery protection method provided by an embodiment of the present invention;

[0042] Figure 3 A schematic diagram of the structure of a starting battery protection device provided by an embodiment of the present invention;

[0043] Figure 4 A schematic diagram of the structure of a vehicle-mounted device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0045] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0046] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described can be implemented in an order other than those illustrated or described herein.

[0047] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] Reference Figure 1 , which shows a schematic flow chart of a method for preserving power of a startup battery according to an embodiment of the present application.

[0050] like Figure 1 As shown, a method for starting a battery to preserve power may include:

[0051] S110, obtaining a minimum temperature group in a preset number of days after the current system time, wherein the minimum temperature group includes the minimum temperature corresponding to each date in the preset number of days.

[0052] Specifically, the preset days refer to the days when the weather forecast will be obtained, which can be set according to actual needs. Different preset days can be set according to different weather temperatures, or different preset days can be set according to the length of time the vehicle is detected to be stationary. For example, the preset days can be set to 7 days, 10 days, etc.

[0053] The weather forecast information for the next 7 days (the preset number of days is shown as 7 days) can be obtained by obtaining a weather forecast application (APP), and the weather forecast information can be a forecast for the weather every hour for 24 hours a day, or a forecast for every three hours. In the embodiment of the present application, the weather forecast for every hour in 24 hours a day is used as an example for explanation.

[0054] From the weather forecast information for the next 7 days, select the minimum temperature of each day, and the minimum temperatures of all 7 days constitute the minimum temperature group Temp[i], where i ranges from [1, 7].

[0055] It should be noted that the triggering condition of step S110 may be after the vehicle function is exited or after the method for starting the battery power conservation of the embodiment of the present application is executed. The vehicle function exit may be, for example, the end of driving, the end of plug-in charging, etc.

[0056] S120. If the minimum temperature group includes at least one minimum temperature below the temperature threshold, based on the date difference between the date corresponding to the at least one minimum temperature below the temperature threshold and the current system time, select a first minimum temperature from the at least one minimum temperature below the temperature threshold, and the date difference between the date corresponding to the first minimum temperature and the current system time is the smallest.

[0057] Specifically, the temperature threshold Kp refers to the critical temperature value at which the charging and discharging capacity of the starting battery is limited, that is, there is a risk of failure to start or ignite. The temperature threshold Kp can be set according to actual conditions, for example, according to the temperature characteristics of the starting battery. For example, if the voltage of the iron battery cell drops significantly below -20°C and cannot meet the minimum operating voltage requirement of the low-voltage electrical appliance, then Kp is set to -20°C.

[0058] It is determined whether there is a temperature lower than the temperature threshold Kp among the 7 lowest temperatures included in the lowest temperature group. If the lowest temperatures in the next 7 days are not lower than Kp, the process ends.

[0059] If there is a minimum temperature lower than Kp in the next 7 days, if there is only one minimum temperature lower than Kp, this minimum temperature will be the first minimum temperature. If there are multiple minimum temperatures lower than Kp, the first minimum temperature will be selected as the first minimum temperature. The first minimum temperature refers to the minimum temperature that appears on the date closest to the current system time among all the minimum temperatures lower than Kp.

[0060] In order to ensure that the power of the starting battery is sufficient on the day (Nth day) when the temperature is lower than Kp for the first time and meet the vehicle starting requirements, it is necessary to wake up the network to charge the starting battery once during the highest temperature period of the previous day. Intelligent charging can be used to charge the starting battery, and the starting battery enters the intelligent charging state. It should be noted that the intelligent charging state is: the power battery charges the starting battery through the DCDC converter. At this time, most of the low-voltage electrical appliances of the vehicle are in a low-power state and the charging power is high. It should be noted that only the network where the ECU (Electronic Control Unit) associated with intelligent charging such as the DCDC (Direct current-Direct current, high-voltage direct current to low-voltage direct current) converter\BMS (battery management system, battery management system)\VCU (vehicle Controller Unit, vehicle controller) is located can be woken up, and the irrelevant ECU is still in a low-power state, reducing the power consumption of low-voltage electrical appliances. It should be noted that the wake-up network in the embodiment of the present application can be the network where the ECU associated with intelligent charging such as the DCDC converter\BMS\VCU is located, and the irrelevant ECU is still in a low-power state, reducing the power consumption of low-voltage electrical appliances.

[0061] S130, determining a time period interval according to the highest temperature period in the day before the date corresponding to the first lowest temperature and the current system time.

[0062] Specifically, in order to reduce the amount of calculation, the time period interval Time1 can be accurate to hour h, that is, the highest temperature time period in the day before the date corresponding to the first lowest temperature and the current system time can be accurate to hour.

[0063] In one embodiment, S130 determines the time interval according to the highest temperature time period on the day before the date corresponding to the first lowest temperature and the current system time, which may include:

[0064] Get the first date corresponding to the first minimum temperature;

[0065] Get the highest temperature period on the day before the first date;

[0066] The time period interval is determined based on the highest temperature period on the first date, the day before the first date, and the current system time.

[0067] Specifically, the first minimum temperature is selected in S120, and the date corresponding to the first minimum temperature is the first date N. Then, based on the weather forecast for the next 7 days obtained in S110, the highest temperature period t1 (24-hour system) in the day before the first date is searched. The current system time is obtained as t0 (24-hour system).

[0068] Then the time interval Time1 = (N-1) × 24 + t1-t0, the unit is h.

[0069] According to experimental data, the highest temperature period of each day is 15:00-16:00. Therefore, in order to simplify the calculation, the time interval can be calculated using Time1=(N-1)×24+15-t0 or Time1=(N-1)×24+16-t0.

[0070] S140: If the time interval is greater than or equal to the first value, start timing from the current system time, and when the continuous timing duration is equal to the time interval, control the startup battery to enter a charging state.

[0071] Specifically, the first value is a threshold value of the time interval, and the first value can be set according to actual needs, for example, it can be set to 1h. The following embodiments are described by taking 1h as an example.

[0072] It is determined whether Time1 obtained in S130 is ≥1. If Time1 is ≥1, Time1 is stored in NVRAM (Non-Volatile Random Access Memory) as a timer, and the timer is run. When the timer is finished, the network is woken up, and the startup battery is controlled to enter the intelligent charging state.

[0073] In this embodiment, by obtaining weather forecast information for a preset number of days after the current system time, the low temperature conditions for the preset number of days in the future are predicted in advance, and the starting battery is charged in advance according to the predicted temperature to ensure that when extremely low temperatures occur, the starting battery has sufficient power to meet the ignition requirements, thereby improving the starting ability of the vehicle in an ultra-low temperature environment and reducing the vehicle breakdown rate caused by low temperatures. In addition, due to the introduction of intelligent charging, the starting battery is always in a relatively sufficient state, and the vehicle can be equipped with a starting battery with a lower capacity, reducing the cost of the vehicle.

[0074] In one embodiment, if the time interval is less than the first value, timing starts from the current system time, and when the continuous timing duration is equal to the second value, the startup battery is controlled to enter the charging state.

[0075] Specifically, if the duration Time1<1, it means that tomorrow is the first date (the date corresponding to the first lowest temperature), and the day is at or has passed the highest temperature period. The vehicle must be powered off to ensure that the starting battery is fully charged to ensure that the vehicle can start normally next time. Therefore, the second value Time2 needs to be set, and the starting battery is charged after the continuous timing duration reaches the second value Time2.

[0076] Time2 can be set according to actual needs. When the DCDC converter is working, the starting battery is float charged and its remaining power cannot be estimated. The remaining power of the battery can only be estimated by the voltage after the DCDC converter stops working. After the DCDC converter is turned off, the time for the starting battery voltage to return to stability should be considered. At the same time, this time cannot be too long, because the battery is not conducive to charging after cooling. Therefore, according to different battery types, Time2 can be 3s to 120s.

[0077] After the DCDC converter is turned off, the vehicle is powered off, Time2 is stored in NVRAM as a timer, the timer is run, and the network is woken up at the end of the run to control the startup battery to enter the intelligent charging state.

[0078] Since the vehicle has just been powered off, the starting battery may be fully charged. Therefore, after the continuous timing from the current system time reaches Time2, the starting battery charge (i.e., the total starting battery voltage) can be determined first.

[0079] In one embodiment, starting from the current system time, when the continuous timing duration is equal to a second value, controlling the startup battery to enter a charging state includes:

[0080] Start timing from the current system time, and when the continuous timing duration is equal to the second value, obtain the total voltage of the starting battery;

[0081] If the total voltage of the starting battery is less than or equal to the total voltage threshold, the starting battery is controlled to enter a charging state.

[0082] Specifically, the total voltage threshold Volt0 can be set according to actual conditions, and is a critical value for determining whether the power of the starting battery is sufficient.

[0083] If the total voltage of the startup battery is greater than Volt0, it means that the startup battery is fully charged and the process ends. If the total voltage of the startup battery is less than or equal to Volt0, the DCDC converter is turned on and the startup battery enters the intelligent charging state.

[0084] In one embodiment, controlling the startup battery to enter a charging state in any of the above embodiments may include:

[0085] The charging unit is controlled to charge the starting battery so that the starting battery enters a charging state.

[0086] In one embodiment, when the starting battery is applied to a fuel vehicle, the charging unit includes an engine; when the starting battery is applied to an electric vehicle, the charging unit includes a power battery and a high-voltage DC to low-voltage DC converter.

[0087] Specifically, when the vehicle is a fuel vehicle, the engine can be controlled to start to charge the starter battery. When the vehicle is an electric vehicle, the power battery and the DCDC converter can be controlled to charge the starter battery, wherein the DCDC converter is used to convert the output voltage of the power battery into the voltage required by the starter battery.

[0088] In one embodiment, the charging time for charging the startup battery is determined by the following steps:

[0089] Obtain the starting battery temperature, the discharge power of the high voltage DC to low voltage DC converter, and the nominal capacity of the starting battery;

[0090] Determine the charging time based on the starting battery temperature, the discharge power of the high voltage DC to low voltage DC converter and the nominal capacity of the starting battery;

[0091] or

[0092] Obtain the current ambient temperature of the starting battery, the discharge power of the high-voltage DC to low-voltage DC converter, and the nominal capacity of the starting battery;

[0093] The charging time is determined based on the current ambient temperature of the starting battery, the discharge power of the high-voltage DC to low-voltage DC converter, and the nominal capacity of the starting battery.

[0094] Specifically, the charging time of the starting battery is determined by the temperature of the starting battery, the discharge power of the DCDC converter and the nominal capacity of the starting battery.

[0095] When the vehicle is provided with a temperature detector for detecting the temperature of the starting battery, the charging time can be determined according to the temperature of the starting battery detected by the temperature detector, combined with the obtained discharge power of the DCDC converter and the nominal capacity of the starting battery.

[0096] However, when the vehicle is not equipped with a temperature detector for detecting the starting battery temperature, the charging time can be determined by obtaining the current ambient temperature (used as the estimated current starting battery temperature) and combining the obtained discharge power of the DCDC converter and the nominal capacity of the starting battery.

[0097] In one embodiment, during the timing process, if it is detected that the starting battery is in a charging state, the timing is stopped.

[0098] Specifically, during the operation of the timer corresponding to Time1 or Time2, if the DCDC converter is turned on to charge the startup battery, the operation time of the timer corresponding to Time1 or Time2 is updated to zero.

[0099] The following combination Figure 2 Describe in detail how to preserve the starting battery.

[0100] S210. After the driving is finished, the weather forecast information for the next 7 days is obtained through the weather forecast APP, and the lowest temperature group Temp[i] in the 7 days is obtained, i∈[1,7].

[0101] S220, determine whether there is a temperature lower than Kp in the lowest temperature group Temp[i]. If no temperature in Temp[i] is lower than Kp, end the process; if there is a temperature lower than Kp in Temp[i], proceed to S230.

[0102] S230, selecting the first date N on which the temperature below Kp first appears;

[0103] S240 , calculating the time interval Time1 between the highest temperature time period t1 of the day before the first date N and the current system time t0 .

[0104] S250, determine whether Time1 ≥ 1, if so, proceed to S260; if not, proceed to S270.

[0105] S260, start timing from the current system time, after Time1 is completed, wake up the network and start the battery to enter the intelligent charging state.

[0106] S270, start timing from the current system time, and wake up the network after Time2 is completed;

[0107] S280: Determine whether the total voltage of the starting battery is greater than Volt0. If so, end the process; if not, the starting battery enters the intelligent charging state.

[0108] like Figure 3 FIG. 1 is a schematic diagram of the structure of a starting battery power conservation device 300 provided in an embodiment of the present invention. Figure 3 As shown, the device can be implemented as Figure 1 The method shown, the apparatus may include:

[0109] An acquisition module 310 is used to acquire a minimum temperature group in a preset number of days after the current system time, where the minimum temperature group includes the minimum temperature corresponding to each date in the preset number of days;

[0110] A selection module 320, configured to select a first minimum temperature from the at least one minimum temperature below the temperature threshold based on a date difference between a date corresponding to the at least one minimum temperature below the temperature threshold and a current system time if the minimum temperature group includes at least one minimum temperature below the temperature threshold;

[0111] A determination module 330, for determining a time interval according to the highest temperature time period in the day before the date corresponding to the first lowest temperature and the current system time;

[0112] The control module 340 is used to start timing from the current system time if the time interval is greater than or equal to the first value, and when the continuous timing duration is equal to the time interval, control the startup battery to enter the charging state.

[0113] Optionally, the control module 340 is further used to start timing from the current system time if the time interval is less than the first value, and when the continuous timing duration is equal to the second value, control the startup battery to enter the charging state.

[0114] Optionally, the control module 340 is further configured to:

[0115] Start timing from the current system time, and when the continuous timing duration is equal to the second value, obtain the total voltage of the starting battery;

[0116] If the total voltage of the starting battery is less than or equal to the total voltage threshold, the starting battery is controlled to enter a charging state.

[0117] Optionally, the control module 340 is further configured to:

[0118] The charging unit is controlled to charge the starting battery so that the starting battery enters a charging state.

[0119] Optionally, when the starting battery is applied to a fuel vehicle, the charging unit includes an engine;

[0120] When the starting battery is applied to an electric vehicle, the charging unit includes a power battery and a high-voltage DC to low-voltage DC converter.

[0121] Optionally, the device further includes: a charging time determination module, configured to:

[0122] Obtain the starting battery temperature, the discharge power of the high voltage DC to low voltage DC converter, and the nominal capacity of the starting battery;

[0123] Determine the charging time based on the starting battery temperature, the discharge power of the high voltage DC to low voltage DC converter and the nominal capacity of the starting battery;

[0124] or

[0125] Obtain the current ambient temperature of the starting battery, the discharge power of the high-voltage DC to low-voltage DC converter, and the nominal capacity of the starting battery;

[0126] The charging time is determined based on the current ambient temperature of the starting battery, the discharge power of the high-voltage DC to low-voltage DC converter, and the nominal capacity of the starting battery.

[0127] Optionally, the determination module 330 is further configured to:

[0128] Get the first date corresponding to the first minimum temperature;

[0129] Get the highest temperature period on the day before the first date;

[0130] The time period interval is determined based on the highest temperature period on the first date, the day before the first date, and the current system time.

[0131] Optionally, the control module 340 is further configured to:

[0132] During the timing process, if the starting battery is detected to be in a charging state, the timing is stopped.

[0133] The present embodiment provides a starting battery protection device that can execute the above method embodiment. Its implementation principle and technical effect are similar and will not be described in detail here.

[0134] Figure 4 The following is a schematic diagram of the structure of a vehicle-mounted device provided by an embodiment of the present invention. Figure 4 As shown, a schematic diagram of the structure of a vehicle-mounted device 400 suitable for implementing an embodiment of the present application is shown.

[0135] like Figure 4 As shown, the vehicle-mounted device 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage part 408 into a random access memory (RAM) 403. In the RAM 403, various programs and data required for the operation of the device 400 are also stored. The CPU 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An input / output (I / O) interface 406 is also connected to the bus 404.

[0136] The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, etc.; an output section 407 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN card, a modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface 406 as needed. A removable medium 411, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 410 as needed, so that a computer program read therefrom is installed into the storage section 408 as needed.

[0137] In particular, according to the embodiments of the present disclosure, the above reference Figure 1 The described process can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program tangibly contained on a machine-readable medium, and the computer program includes program code for executing the above-mentioned startup battery protection method. In such an embodiment, the computer program can be downloaded and installed from a network through the communication part 409, and / or installed from the removable medium 411.

[0138] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of the code, and the aforementioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0139] The units or modules involved in the embodiments described in the present application may be implemented by software or hardware. The units or modules described may also be arranged in a processor. The names of these units or modules do not constitute limitations on the units or modules themselves in certain circumstances.

[0140] An embodiment of the present application also provides a vehicle, which includes the vehicle-mounted device provided in the above embodiment.

[0141] As another aspect, the present application further provides a storage medium, which may be the storage medium included in the aforementioned device in the above embodiment; or may be a storage medium that exists independently and is not assembled into the device. The storage medium stores one or more programs, and the aforementioned programs are used by one or more processors to execute the startup battery protection method described in the present application.

[0142] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A method for preserving power of a starting battery, characterized in that: The method comprises: Obtain a minimum temperature group in a preset number of days after the current system time, wherein the minimum temperature group includes the minimum temperature corresponding to each date in the preset number of days; If the minimum temperature group includes at least one minimum temperature below the temperature threshold, based on the date difference between the date corresponding to the at least one minimum temperature below the temperature threshold and the current system time, a first minimum temperature is selected from the at least one minimum temperature below the temperature threshold, and the date difference between the date corresponding to the first minimum temperature and the current system time is the smallest; Determine a time interval according to the highest temperature period on the day before the date corresponding to the first lowest temperature and the current system time; If the time interval is greater than or equal to the first value, timing starts from the current system time, and when the continuous timing duration is equal to the time interval, the startup battery is controlled to enter a charging state.

2. The method according to claim 1, characterized in that The method further comprises: If the time interval is less than the first value, timing starts from the current system time, and when the continuous timing duration is equal to the second value, the starting battery is controlled to enter a charging state.

3. The method according to claim 2, characterized in that The step of starting timing from the current system time and controlling the starting battery to enter a charging state when the continuous timing duration is equal to a second value includes: Starting from the current system time, when the continuous timing duration is equal to a second value, obtaining the total voltage of the starting battery; If the total voltage of the starting battery is less than or equal to the total voltage threshold, the starting battery is controlled to enter a charging state.

4. The method according to any one of claims 1 to 3, characterized in that: The controlling the starting battery to enter a charging state comprises: The charging unit is controlled to charge the starting battery so that the starting battery enters a charging state.

5. The method according to claim 4, characterized in that When the starting battery is applied to a fuel vehicle, the charging unit includes an engine; When the starting battery is applied to an electric vehicle, the charging unit includes a power battery and a high-voltage direct current to low-voltage direct current converter.

6. The method according to any one of claims 1 to 3, characterized in that: The method further includes: determining the charging time of charging the starting battery by the following steps: Acquiring the starting battery temperature, the discharge power of the high voltage direct current to low voltage direct current converter and the nominal capacity of the starting battery; Determining the charging time according to the starting battery temperature, the discharge power of the high voltage direct current to low voltage direct current converter and the nominal capacity of the starting battery; or Acquire the current ambient temperature of the starting battery, the discharge power of the high-voltage direct current to low-voltage direct current converter, and the nominal capacity of the starting battery; The charging time is determined according to the current ambient temperature of the starting battery, the discharge power of the high-voltage direct current to low-voltage direct current converter, and the nominal capacity of the starting battery.

7. The method according to any one of claims 1 to 3, characterized in that: The determining of the time interval according to the highest temperature time period on the day before the date corresponding to the first lowest temperature and the current system time includes: Obtain a first date corresponding to the first minimum temperature; Obtain the highest temperature period on the day before the first date; The time period interval is determined according to the first date, the highest temperature time period on the day before the first date, and the current system time.

8. The method according to claim 1 or 2, characterized in that: During the timing process, if it is detected that the starting battery is in a charging state, the timing is stopped.

9. A starting battery protection device, characterized in that: The device comprises: An acquisition module, used to acquire a minimum temperature group in a preset number of days after the current system time, wherein the minimum temperature group includes a minimum temperature corresponding to each date in the preset number of days; A selection module, configured to select a first minimum temperature from the at least one minimum temperature below the temperature threshold, if the minimum temperature group includes at least one minimum temperature below the temperature threshold, based on a date difference between a date corresponding to the at least one minimum temperature below the temperature threshold and the current system time, wherein the date difference between the date corresponding to the first minimum temperature and the current system time is the smallest; A determination module, configured to determine a time interval according to a highest temperature period in the day before the date corresponding to the first lowest temperature and a current system time; The control module is used to start timing from the current system time if the time interval is greater than or equal to a first value, and when the continuous timing duration is equal to the time interval, control the startup battery to enter a charging state.

10. A vehicle-mounted device, 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 program, the startup battery power preservation method as described in any one of claims 1-8 is implemented.

11. A vehicle, characterized in that: The vehicle-mounted device comprises the vehicle-mounted device as claimed in claim 10.

12. A readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the startup battery power preservation method as described in any one of claims 1-8 is implemented.

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