Vehicle power supply control method, vehicle, computer equipment and storage medium

Abstract

The invention provides a vehicle power supply control method, a vehicle, computer equipment and a storage medium, and the method comprises the steps: during the parking period of the vehicle, if a starting request for a target function of the vehicle is detected, starting the target function of the vehicle according to the current electric quantity information of a low-voltage battery of the vehicle; judging whether the current electric quantity of the low-voltage battery meets the power demand of the target function or not; controlling the low-voltage battery to supply power to a load corresponding to the target function under the condition of determining that the current electric quantity of the low-voltage battery meets the power demand of the target function; and controlling a high-voltage battery in the vehicle to supply power to a load corresponding to the target function under the condition that the current electric quantity of the low-voltage battery does not meet the power demand of the target function. According to the embodiment of the invention, when the electric quantity of the low-voltage battery meets the power demand of the target function, the low-voltage battery is preferentially used for supplying power to the load corresponding to the target function, so that the power-on time of the high-voltage battery can be shortened to a certain extent, and the power consumption of the high-voltage battery in a working state is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a vehicle power supply control method, a vehicle, a computer device, and a storage medium. Background Art

[0002] The vehicle power supply system usually includes high-voltage batteries and low-voltage batteries. Low-voltage batteries are such as 12v low-voltage small batteries. During the operation of the vehicle, high-voltage batteries are generally used to power the electrical loads in the vehicle. When the vehicle is parked, most remote function operations will also use high-voltage batteries for power supply. Low-voltage batteries are generally used to power some instantaneous electrical loads. For example, for instantaneous operations such as remote unlocking, honking the horn to find the car, flashing lights, etc., low-voltage batteries will be used to power them during the parking period.

[0003] In addition to the above-mentioned electrical loads that are used instantaneously, many other functions are usually used during the parking period, such as remote seat heating, remote early defrosting, etc. These operations are generally powered directly by high-voltage batteries. In the process of high-voltage battery power supply, the high-voltage battery and the basic components of the three systems that require high-voltage electricity in the vehicle (i.e., battery system, motor system and electronic control system), such as the high-voltage distribution box, power battery management system, vehicle controller, motor controller, cooling system, etc., are in working state for a long time, resulting in more energy consumption during the parking period. Summary of the invention

[0004] The embodiments of the present disclosure at least provide a vehicle power supply control method, a vehicle, a computer device, and a storage medium.

[0005] In a first aspect, an embodiment of the present disclosure provides a vehicle power supply control method, including:

[0006] During the parking of the vehicle, if a start request for a target function of the vehicle is detected, judging whether the current power of the low-voltage battery meets the power demand of the target function according to the current power information of the low-voltage battery of the vehicle;

[0007] When it is determined that the current power of the low-voltage battery meets the power demand of the target function, controlling the low-voltage battery to supply power to a load corresponding to the target function;

[0008] When it is determined that the current power level of the low-voltage battery does not meet the power demand of the target function, the high-voltage battery in the vehicle is controlled to supply power to a load corresponding to the target function.

[0009] By adopting the above-mentioned vehicle power supply control method, when the vehicle is parked, for the target function of the vehicle, especially the remote control function that needs to work for a long time, when the power of the low-voltage battery meets the power demand of the target function, the low-voltage battery can be used preferentially to power the load corresponding to the target function. When the power of the low-voltage battery cannot meet the power demand of the target function, the high-voltage battery can be used to power the load corresponding to the target function. In this way, the power-on time of the high-voltage battery can be reduced to a certain extent, thereby reducing the power consumption generated by the high-voltage battery and the basic high-voltage components inside the vehicle when in working state to a certain extent, thereby saving energy.

[0010] In an optional implementation manner, after detecting a start request for a target function of the vehicle, before determining whether the current power of the low-voltage battery meets the power demand of the target function, the method further includes:

[0011] Determine a target attribute type corresponding to the target function among multiple attribute types; the attribute type is related to the power demand of each function in the vehicle, and the power demand is related to the working time and power consumption of each function; the attribute type includes a first type, a second type, and a third type, and the power demand corresponding to the second type is greater than the power demand of the first type and less than the power demand of the third type;

[0012] The determining whether the current power of the low-voltage battery meets the power demand of the target function includes:

[0013] When it is determined that the target attribute type belongs to the second type, it is determined whether the current power of the low-voltage battery meets the power demand of the target function.

[0014] In the above implementation, different attribute types correspond to different power requirements. By determining the target attribute type corresponding to the target function, the method of powering the target function can be decided more quickly according to the power requirements corresponding to the target attribute type. As for the second type of target function, this type of target function may correspond to functions that require long-term operation, such as remote real-time viewing, remote seat heating, remote defrosting, etc. For this type of target function, when the current power of the low-voltage battery meets the target function, the low-voltage battery can be used to power the load corresponding to the target function. When the current power of the low-voltage battery does not meet the target function, the high-voltage battery can be used to power the load corresponding to the target function. Therefore, through the target attribute type corresponding to the target function, it can be decided more quickly whether the battery that powers the target function is a high-voltage battery or a low-voltage battery.

[0015] In an optional implementation manner, the method further includes:

[0016] When it is determined that the target attribute type belongs to the first type, the low-voltage battery is controlled to supply power to a load corresponding to the target function.

[0017] In the above implementation, the first type of target function may correspond to a function that operates briefly or instantaneously, such as remote unlocking, searching for a vehicle and honking the horn, etc. For the first type of target function, a low-voltage battery may be used directly to power the load corresponding to the target function, thereby reducing the power supply time of the high-voltage battery, i.e., reducing the power consumption generated by the high-voltage battery power supply.

[0018] In an optional implementation manner, the method further includes:

[0019] In the case where it is determined that the target attribute type belongs to the third type, if the current power of the low-voltage battery is greater than the first power threshold, controlling the low-voltage battery to supply power to the load corresponding to the target function, and monitoring the remaining power of the low-voltage battery;

[0020] When the remaining power is less than a second power threshold, switching to the high-voltage battery to supply power to the load corresponding to the target function.

[0021] In the above implementation, the third type of target function may correspond to some continuously working functions, such as a car refrigerator, a sentry mode, etc. For the third type of target function, when the power of the low-voltage battery is sufficient (greater than the first power threshold), the low-voltage battery may be used to power the load corresponding to the target function. After the power of the low-voltage battery is reduced (less than the second power threshold), the high-voltage battery may be used to power the load corresponding to the target function. The above process may increase the use opportunities of the low-voltage battery to a certain extent, and avoid directly using the high-voltage battery to power on, which results in large energy consumption.

[0022] In an optional implementation manner, the method further includes:

[0023] While controlling the high-voltage battery in the vehicle to supply power to the load corresponding to the target function, the high-voltage battery is used to supplement power for the low-voltage battery;

[0024] If the current power level of the low-voltage battery reaches the first power threshold during the process of the high-voltage battery supplying power to the load corresponding to the target function, the low-voltage battery is switched to supply power to the load corresponding to the target function.

[0025] In the above implementation, in the scenario of continuous power consumption of the third type of target function, while the high-voltage battery is supplying power to the load, the high-voltage battery can also supplement power for the low-voltage battery. When the low-voltage battery reaches a certain power level, the low-voltage battery can be used for power supply. Through the above process, the power-on time of the high-voltage battery can be reduced to a certain extent, and the energy consumption generated by powering on the high-voltage battery can be reduced.

[0026] In an optional implementation manner, the method further includes:

[0027] When the remaining power of the low-voltage battery is less than the third power threshold, the high-voltage battery is controlled to supplement power for the low-voltage battery until the power of the low-voltage battery reaches a fourth power threshold, and the fourth power threshold is less than the full power of the low-voltage battery.

[0028] In the above implementation, the charging is terminated when the low-voltage battery reaches the fourth power threshold, that is, the charging is terminated before the battery reaches full power. This allows the DCDC to charge the low-voltage battery in a state of higher conversion efficiency, thereby reducing power consumption and extending the service life of the low-voltage battery.

[0029] In an optional implementation, the fourth power threshold is 80% to 96% of the full power.

[0030] In the above implementation, the range of the above-set charging end threshold (ie, the fourth power threshold) can achieve a better charging efficiency for the low-voltage battery.

[0031] In a second aspect, an embodiment of the present disclosure further provides a vehicle, comprising a controller, the controller comprising: a memory for storing machine-readable instructions; a processor for calling and executing the machine-readable instructions stored in the memory to implement the above-mentioned first aspect, or steps in any possible implementation of the first aspect.

[0032] In a third aspect, an embodiment of the present disclosure further provides a computer device, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the computer device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the steps of the above-mentioned first aspect, or any possible implementation of the first aspect are performed.

[0033] In a fourth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned first aspect or any possible implementation of the first aspect are executed.

[0034] For a description of the effects of the above-mentioned vehicle, computer device, and computer-readable storage medium, please refer to the description of the above-mentioned vehicle power supply control method, which will not be repeated here.

[0035] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used together with the specification to illustrate the technical solutions of the present disclosure. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0037] Figure 1 A flow chart of a vehicle power supply control method provided by an embodiment of the present disclosure is shown;

[0038] Figure 2 A flow chart showing another vehicle power supply control method provided by an embodiment of the present disclosure;

[0039] Figure 3 A schematic diagram showing a usage overview panel of a remote control function provided by an embodiment of the present disclosure;

[0040] Figure 4 A schematic diagram of the structure of a vehicle power supply control device provided by an embodiment of the present disclosure is shown;

[0041] Figure 5 A schematic diagram of a computer device provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure for protection, but merely represents the selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present disclosure.

[0043] The vehicle power supply system usually includes a high-voltage battery and a low-voltage battery. The high-voltage battery is connected to a (Direct Current to Direct Current converter) DCDC. The DCDC can convert the high-voltage DC power in the high-voltage battery into DC (or near-DC) power of different voltages.

[0044] During vehicle operation, the high-voltage battery and DCDC are continuously working. Generally, all electrical loads are powered by DCDC.

[0045] During the parking period, some remote control functions in the vehicle that need to work for a long time (generally a few minutes to tens of minutes) or continuously (generally 24 hours of continuous work), such as remote defrosting (lasting 10 to 15 minutes), steering wheel heating (lasting 10 to 15 minutes), remote seat heating (lasting 10 to 15 minutes), operation after thermal management (lasting 7 minutes), remote air conditioning control, remote audio and video calls, sentry function, car refrigerator, etc., mainly rely on high-voltage batteries for power supply. In the process of high-voltage battery power supply, the basic components of the three systems (i.e., battery system, motor system and electronic control system) that need to use high-voltage electricity in the vehicle, such as high-voltage distribution box, power battery management system, vehicle controller, motor controller, cooling system, etc., are in working state for a long time, which will increase the consumption of electricity.

[0046] In addition, when the high-voltage battery is supplying power, the low-voltage battery is usually continuously supplemented by DCDC until the low-voltage battery is fully charged. The closer the low-voltage battery is to full charge, the lower the conversion efficiency of DCDC. When the DCDC is in a state of low conversion efficiency for a long time to supplement the low-voltage battery, the energy consumption will also increase due to the multi-level conversion of voltage and the power consumption of the internal coil of DCDC.

[0047] Based on this, the present disclosure provides a vehicle power supply control method. For the target function started while the vehicle is parked, it will determine whether the low-voltage battery meets the power demand. When the low-voltage battery meets the power demand, the low-voltage battery will be used first, and when it does not meet the demand, the high-voltage battery will be used.

[0048] Here, the above-mentioned method of giving priority to using the low-voltage battery to power the entire function execution process and using the high-voltage battery when the low-voltage battery does not meet the power demand is suitable for scenarios with medium-level power demand such as seat heating and defrosting. That is, when the vehicle is parked, when seat heating, defrosting and other functions that take a relatively long time to power but are not continuous are enabled, if the low-voltage battery meets the power demand of the function, the low-voltage battery is used for power supply, and if the power demand of the function is not met, the high-voltage battery is used for power supply.

[0049] For other power demand situations, such as instantaneous, short-term lower-level power demand, such as remote unlocking, honking the horn, flashing lights, etc., there is no need to determine whether the power demand is met, and the low-voltage battery can be used directly for power supply.

[0050] In addition, for some continuous power demands, such as refrigerators, sentry mode, etc., preliminary research shows that low-voltage batteries will not meet such power demands. In these cases, low-voltage batteries can be used for power supply first, and then high-voltage batteries can be replaced when the low-voltage batteries are insufficient. Compared with directly using high-voltage batteries, the energy consumption of the entire vehicle can be greatly reduced.

[0051] In addition, the disclosed embodiment can control the high-voltage battery to replenish the low-voltage battery when the remaining power of the low-voltage battery is less than the third power threshold (for example, 50%), and terminate the replenishment when the low-voltage battery is replenished to a fourth power threshold (for example, 80%) that is less than the full power, that is, terminate the replenishment before the full power is replenished. In this way, the DCDC can replenish the low-voltage battery in a state of higher conversion efficiency, reduce the energy consumption generated by the DCDC being in a long-term working state of low conversion efficiency, and can also extend the service life of the low-voltage battery.

[0052] The defects existing in the above schemes and the proposed solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure for the above problems below should be the contributions made by the inventor to the present disclosure during the disclosure process.

[0053] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0054] To facilitate understanding of this embodiment, a vehicle power supply control method disclosed in the embodiment of the present disclosure is first introduced in detail. The executor of the vehicle power supply control method provided in the embodiment of the present disclosure is generally a computer device with certain computing capabilities.

[0055] See also Figure 1 FIG. 1 is a flow chart of a vehicle power supply control method provided by an embodiment of the present disclosure, wherein the method includes S101 to S103, wherein:

[0056] S101: When a vehicle is parked, if a start request for a target function of the vehicle is detected, it is determined whether the current power of the low-voltage battery meets the power demand of the target function based on the current power information of the low-voltage battery of the vehicle.

[0057] S102: When it is determined that the current power level of the low-voltage battery meets the power demand of the target function, control the low-voltage battery to supply power to a load corresponding to the target function.

[0058] S103: When it is determined that the current power level of the low-voltage battery does not meet the power demand of the target function, control the high-voltage battery in the vehicle to supply power to a load corresponding to the target function.

[0059] In the disclosed embodiments, the vehicle may include a variety of remote control functions. The functions in the vehicle may include functions that work instantaneously or temporarily, such as remote unlocking, honking the horn when searching for the vehicle, flashing lights, issuing warning signals, issuing prompt signals, issuing indication signals, etc.; they may also include remote control functions that require a long time to work (generally a few minutes to tens of minutes) or continuous work (generally 24 hours of continuous work), such as thermal management post-operation, remote defrosting, remote seat heating, remote air conditioning control, remote audio and video calls, sentry functions, car refrigerators, etc.

[0060] The embodiments of the present disclosure are mainly used in scenarios where power is supplied to a target function after a start request for a function in the vehicle is detected while the vehicle is parked; the start request here can be a request initiated by the user through a vehicle application or a vehicle smart key to control the start of a certain function of the vehicle.

[0061] In the disclosed embodiment, the power demand of the target function may refer to the power demand of the target function used this time. Generally, the power demand of each function in the vehicle may be related to the working time and the power function. Generally, the longer the working time, the greater the power demand; the greater the power consumption, the greater the power demand.

[0062] In the disclosed embodiment, the functions in the vehicle can be classified according to the power demand. Exemplarily, the functions in the vehicle can be divided into at least a first type of function (low-gear power demand), a second type of function (medium-gear power demand) and a third type of function (high-gear power demand), that is, the attribute type of each function in the vehicle can include at least a first type, a second type and a third type. The attribute type is related to the power demand of each function in the vehicle. Among them, the power demand corresponding to the second type is greater than the power demand corresponding to the first type, and the power demand of the third type is greater than the power demand corresponding to the second type.

[0063] Specifically, the first type of functions mentioned above may include functions that work instantaneously or temporarily, such as remote unlocking, honking to find a car, flashing lights, etc. The working time of such functions is usually instantaneous or relatively short, and the power demand is the smallest compared to other types of functions. For such functions, usually only low-voltage batteries can be used to power the corresponding loads. Even when the power of the low-voltage battery is low, the power demand can be met. Since the low-voltage battery will enable the power replenishment strategy when the power is low to a certain extent, it is generally not the case that the power of the low-voltage battery is insufficient to power such functions.

[0064] The second type of functions mentioned above may include functions that work for a long time, such as remote defrosting, remote seat heating, remote air conditioning control, remote audio and video calls, etc. The working time of such functions is usually several minutes to tens of minutes, and the power demand is relatively large. For such functions, generally, when the power of the low-voltage battery is sufficient, only using the low-voltage battery to power the corresponding load can meet the power demand, but if the power of the low-voltage battery is low, it cannot meet the power demand.

[0065] The third type of functions mentioned above may include functions that work continuously, such as sentinel mode, car refrigerator, etc. The working time of such functions is usually 24 hours, so the power demand is the largest compared with other types of functions. For such functions, generally only using low-voltage batteries to power the corresponding loads cannot meet the power demand.

[0066] Therefore, in order to both supply power normally to the load of the target function and reduce the energy consumption generated during the power supply process to a certain extent, a suitable power supply method can be selected according to the attribute type of the target function.

[0067] In one embodiment, after detecting a start request for a target function of the vehicle, before determining whether the current power of the low-voltage battery meets the power demand of the target function, it may also include: determining a target attribute type corresponding to the target function among multiple attribute types; the attribute type is related to the power demand of each function in the vehicle, and the power demand is related to the working time and power consumption of each function; the attribute types include a first type, a second type, and a third type, and the power demand corresponding to the second type is greater than the power demand of the first type, and less than the power demand of the third type.

[0068] In the above implementation, the target attribute type corresponding to the target function may be determined according to the attribute information of the target function.

[0069] The attribute information of the target function may include the rated voltage, rated current, rated power, working time and other information of the corresponding load. For example, the corresponding working time and / or power range may be set for different attribute types. According to the attribute information of the target function and the corresponding relationship between each attribute type and the working time and / or power range, the target attribute type corresponding to the target function may be determined.

[0070] The specific description of the attribute type can be found in the previous article and will not be repeated here.

[0071] Different attribute types correspond to different power demands. By determining the target attribute type corresponding to the target function, a method for supplying power to the target function can be determined more quickly based on the power demand corresponding to the target attribute type.

[0072] Specifically, in one implementation, when it is determined that the target attribute type belongs to the first type, the low-voltage battery may be controlled to supply power to the load corresponding to the target function.

[0073] As mentioned above, the first type of target function may correspond to a function that works briefly or instantaneously, such as remote unlocking, honking a car, etc. The power demand corresponding to the first type of function is the smallest compared to other types of functions. For such functions, the power demand can be met by using a low-voltage battery to power the corresponding load. Therefore, when it is determined that the target attribute type belongs to the first type, that is, when it is determined that the target function is a function of the first type, the low-voltage battery can be controlled to power the load corresponding to the target function. In this way, the power supply time of the high-voltage battery is reduced, that is, the power consumption generated by the power supply of the high-voltage battery is reduced.

[0074] In one embodiment, when it is determined that the target attribute type belongs to the second type, that is, when it is determined that the target function is a function of the second type, the power demand of this type of function is relatively large. For this type of function, the low-voltage battery may meet the power demand or may not meet the power demand. Therefore, when it is determined that the target attribute type belongs to the second type, it can be judged whether the current power of the low-voltage battery meets the power demand of the target function based on the current power information of the low-voltage battery of the vehicle.

[0075] When it is determined that the current power of the low-voltage battery meets the power demand of the target function, the low-voltage battery can be controlled to supply power to the load corresponding to the target function; when it is determined that the current power of the low-voltage battery does not meet the power demand of the target function, the high-voltage battery in the vehicle can be controlled to supply power to the load corresponding to the target function.

[0076] As mentioned above, the second type of target function may correspond to a function that requires a long time to work, such as remote real-time viewing, remote seat heating, remote defrosting, etc. For the second type of target function, when the current power of the low-voltage battery meets the target function, the low-voltage battery may be used first to power the load corresponding to the target function. When the current power of the low-voltage battery does not meet the target function, the high-voltage battery may be used to power the load corresponding to the target function. Therefore, through the target attribute type corresponding to the target function, it can be more quickly decided whether the battery that powers the target function is a high-voltage battery or a low-voltage battery.

[0077] It should be noted here that, in the above-mentioned embodiment, when it is determined that the current power of the low-voltage battery does not meet the power demand of the target function, the high-voltage battery is directly used to power the load corresponding to the target function. Even if the low-voltage battery is recharged during the power supply process of the high-voltage battery, it will not switch to the high-voltage battery for power supply later, because under normal circumstances, the second type of target function does not take long, and there will be no situation where the low-voltage battery has sufficient power and then runs out of power.

[0078] In the embodiments of the present disclosure, the current power of the low-voltage battery meets the power demand of the target function, which may refer to the current power of the low-voltage battery meeting the power demand of a target function when the target function reaches the average number of daily uses. For example, if the average number of daily uses of a target function is 5 times, and the current power of the low-voltage battery can support the average daily use of the target function 5 times, then the current power of the low-voltage battery meets the power demand of the target function.

[0079] Table 1 shows the average daily usage times corresponding to various second-type functions.

[0080] Table 1

[0081]

[0082] As can be seen from Table 1, different functions may correspond to different average daily usage times. The above average daily usage times may be the average daily usage times determined based on the daily usage times of a large number of vehicle users. Other functions, such as thermal management post-operation, are automatically triggered, and the average daily usage times are 1 time.

[0083] In the process of controlling the high-voltage battery in the vehicle to supply power to the load corresponding to the target function, the high-voltage battery can also supplement power for the low-voltage battery.

[0084] In one embodiment, when it is determined that the target attribute type belongs to the third type, that is, when it is determined that the target function is a function of the third type, this type of function requires continuous power supply. It is obvious that relying solely on the power of the low-voltage battery cannot meet the power demand of the target function. In this case, the low-voltage battery can be used to power the load corresponding to the target function first, and after the remaining power of the low-voltage battery is reduced to a certain threshold, the high-voltage battery can be used to power the load corresponding to the target function. That is, when it is determined that the target attribute type belongs to the third type, if the power of the low-voltage battery is greater than the first power threshold, the low-voltage battery is controlled to power the load corresponding to the target function, and the remaining power of the low-voltage battery is monitored; when the remaining power is less than the second power threshold, switch to the high-voltage battery to power the load corresponding to the target function.

[0085] In the above embodiment, illustratively, the first power threshold can be set to 80%. When the power of the low-voltage battery is greater than 80%, it can be considered that the power is sufficient, and the low-voltage battery can be used preferentially to power the load of the target function. It should be understood here that 80% is only an example. In actual situations, for low-voltage batteries of different capacities or models, the first power threshold can float. Generally, the first power threshold can be between 75% and 85%.

[0086] The second power threshold can be determined based on multiple factors such as the power consumption when the vehicle is static and the power threshold for triggering intelligent power replenishment (intelligent power replenishment means controlling the high-voltage battery to replenish the low-voltage battery when the power of the low-voltage battery is lower than the power threshold). Exemplarily, the second power threshold can be set to 55% (the power threshold for triggering intelligent power replenishment is usually set to 50%). When the power of the low-voltage battery is less than 55%, it can be considered that the power is low, and the high-voltage battery can be switched to power the load of the target function. It should be understood here that 55% is only an example. In general, the second power threshold should be greater than 50%. This is to avoid triggering intelligent power replenishment as much as possible and increase the power-on time of the high-voltage battery.

[0087] As mentioned above, the third type of target function may correspond to a continuously working function, such as a car refrigerator, a sentry mode, etc. For the third type of target function, when the power of the low-voltage battery is sufficient (greater than the first power threshold), the low-voltage battery may be used to power the load corresponding to the target function. After the power of the low-voltage battery is reduced (less than the second power threshold), the high-voltage battery may be used to power the load corresponding to the target function. The above process may increase the use opportunities of the low-voltage battery to a certain extent, and avoid directly using the high-voltage battery to power on, which results in a large amount of power consumption.

[0088] In the process of controlling the high-voltage battery in the vehicle to supply power to the load corresponding to the target function, the high-voltage battery can also supplement power for the low-voltage battery. In the embodiment of the present disclosure, whenever the high-voltage battery supplies power to the load corresponding to the target function, the low-voltage battery will passively supplement power.

[0089] For the third type of target functions such as the vehicle refrigerator and sentry mode that require continuous power consumption, in the process of controlling the high-voltage battery in the vehicle to supply power to the load corresponding to the target function, since the high-voltage battery also recharges the low-voltage battery, after the power of the low-voltage battery reaches a certain threshold, the low-voltage battery can be used to continue to supply power to the load corresponding to the target function. Based on this, in one embodiment, while controlling the high-voltage battery in the vehicle to supply power to the load corresponding to the target function, the high-voltage battery recharges the low-voltage battery; if the current power of the low-voltage battery reaches the first power threshold during the process of the high-voltage battery supplying power to the load corresponding to the target function, the low-voltage battery is switched to supply power to the load corresponding to the target function.

[0090] The first power threshold is the same as the aforementioned first power threshold. Exemplarily, the first power threshold here may also be 80%.

[0091] Continuing with the above example, that is, when the power of the low-voltage battery is greater than 80%, the low-voltage battery is used to power the load corresponding to the target function. When the remaining power of the low-voltage battery is less than 55%, switch to the high-voltage battery to power the load corresponding to the target function. In the process of the high-voltage battery powering the load corresponding to the target function, if the high-voltage battery recharges the low-voltage battery so that the current power of the low-voltage battery reaches 80%, switch back to the low-voltage battery to power the load corresponding to the target function.

[0092] In the above implementation, the high-voltage battery supplies power to the load while the low-voltage battery is replenishing power. When the low-voltage battery reaches a certain power level, the low-voltage battery is used for power supply. This can reduce the power-on time of the high-voltage battery to a certain extent and reduce the energy consumption generated by powering on the high-voltage battery.

[0093] In the disclosed embodiment, in addition to the passive charging of the low-voltage battery during the process of the high-voltage battery supplying power to the load corresponding to the target function, the intelligent charging can also be triggered. That is, in one embodiment, when the remaining power of the low-voltage battery is less than the third power threshold, the high-voltage battery is controlled to charge the low-voltage battery until the power of the low-voltage battery reaches the fourth power threshold, and the fourth power threshold is less than the full power of the low-voltage battery.

[0094] In the above implementation, the third power threshold can generally be set to a smaller value. For example, the third power threshold can be set to 50%, that is, when the remaining power of the low-voltage battery is less than 50%, the high-voltage battery can be controlled to supplement the power of the low-voltage battery.

[0095] In the disclosed embodiment, when the high-voltage battery is controlled to replenish power for the low-voltage battery, the low-voltage battery may not be replenished to full power, but the replenishment may be terminated after the low-voltage battery is replenished to a fourth power threshold value that is less than the full power.

[0096] In the above implementation, the charging is terminated when the low-voltage battery reaches the fourth power threshold, that is, the charging is terminated before the battery reaches the full power. In this way, the DCDC can charge the low-voltage battery in a state of high conversion efficiency, reduce power consumption, and extend the service life of the low-voltage battery.

[0097] In one embodiment, the fourth power threshold can be 80% to 96% of the full power. The range of the charging end threshold can achieve a better charging efficiency for the low-voltage battery. For example, the fourth power threshold can be 95%. Experimental data show that the charging efficiency can be optimal at this time. By controlling the DCDC to be in a state of higher conversion efficiency to charge the low-voltage battery, the consumption of electric energy can be further reduced.

[0098] The embodiment of the present disclosure also provides a flow chart of another vehicle power supply control method, as shown in the figure, which shows the control process of powering multiple functions.

[0099] As can be seen from the figure, after the user leaves the car and locks it, after detecting the start request for the post-thermal management operation, the current power information of the low-voltage battery is used to determine whether the power of the low-voltage battery is sufficient, that is, whether it is greater than the first threshold (for example, it can be 80%). If it is greater than or equal to, it is determined that the current power of the low-voltage battery is sufficient, and the low-voltage battery is controlled to supply power to the load after the thermal management operation; if it is less than, it is determined that the current power of the low-voltage battery is insufficient, and the high-voltage battery is controlled to supply power to the load after the thermal management operation. After the post-thermal management operation ends, the high-voltage battery is controlled to stop supplying power.

[0100] Next, determine whether the refrigerator is turned on. After detecting the start-up request of the refrigerator, the high voltage is increased in stages according to the power level of the low-voltage battery. Specifically, it can be determined whether the current power level of the low-voltage battery is greater than the second threshold (for example, it can also be 80%). If it is greater than or equal to, it is determined that the current power level of the low-voltage battery is sufficient, and the low-voltage battery is controlled to power the refrigerator; if the remaining power level of the monitored low-voltage battery is less than the third threshold (for example, 55%), the high-voltage battery is controlled to power the refrigerator.

[0101] Next, determine whether the sentry mode is turned on. After detecting the start request of the sentry mode, the high voltage is increased according to the segmented power of the low-voltage battery. Specifically, it can be determined whether the current power of the low-voltage battery is greater than the fourth threshold (for example, it can also be 80%). If it is greater than or equal to, it is determined that the current power of the low-voltage battery is sufficient, and the low-voltage battery is controlled to supply power to the load corresponding to the sentry mode; if the remaining power of the monitored low-voltage battery is less than the fifth threshold (for example, 55%), the high-voltage battery is controlled to supply power to the load corresponding to the sentry mode. If the start request of the sentry mode is not detected, it is determined that the vehicle enters a dormant state.

[0102] After detecting a start request for any function such as remote viewing / photographing / video calling, determine whether the power of the low-voltage battery meets the power demand of any function based on the current power information of the low-voltage battery, that is, determine whether the power of the low-voltage battery is sufficient. Here, it can be specifically determined whether the power of the low-voltage battery meets the daily average usage of any function. For the description of the average daily usage, please refer to the previous text and will not be repeated here. If it is satisfied, the low-voltage battery is controlled to supply power to the load of any function; if it is not satisfied, the high-voltage battery is controlled to supply power to the load of any function. After any function is completed, the high-voltage battery is controlled to stop supplying power.

[0103] When the vehicle is in a dormant state, it can be determined whether the power of the low-voltage battery is less than the sixth threshold (e.g., 50%). If it is less than, the high-voltage battery is controlled to supplement the power of the low-voltage battery until the power of the low-voltage battery reaches the seventh threshold, which is less than the full power of the low-voltage battery. The seventh threshold can be 80% to 96% of the full power, for example, 95%.

[0104] After detecting a start request for any function such as remote air conditioning / seat heating / steering wheel heating / defrosting, determine whether the power of the low-voltage battery meets the power demand of any function based on the current power information of the low-voltage battery, that is, determine whether the power of the low-voltage battery is sufficient. Here, it can be specifically determined whether the power of the low-voltage battery meets the daily average usage of any function. If it is satisfied, the low-voltage battery is controlled to supply power to the load of any function; if not, the high-voltage battery is controlled to supply power to the load of any function. After any function ends, the high-voltage battery is controlled to stop supplying power.

[0105] It should be noted that the functions listed above are only for illustration purposes. In specific implementations, the detection sequence, quantity, and category of the functions may not be specifically limited. The detection and power supply control process may end when the user enters the vehicle.

[0106] The vehicle power supply control method provided by the embodiment of the present disclosure can be applied to the background server. In a specific implementation, the vehicle can obtain its own bus signals, such as remote air conditioning, heating, defrosting and other working status signals, the power and current signals of the low-voltage battery, the current signals and voltage signals of the high-voltage battery, etc. The vehicle can package the above bus information and upload it to the cloud of the automotive telematics service provider (Telematics Service Provider, TSP) through the networking module. The background server can download the above bus signals from the cloud, and determine the power consumption information of the high-voltage battery, DCDC and low-voltage battery based on the above bus information.

[0107] During parking, when the high-voltage battery is used for power supply, the process of determining the power consumption information of the high-voltage battery is as follows: the battery power of the high-voltage battery is calculated according to the voltage and current of the high-voltage battery. The battery power of the high-voltage battery is integrated during parking to obtain the high-voltage energy consumption.

[0108] The process of determining the power consumption information of DCDC is as follows: Calculate the power of the DCDC high-voltage end according to the current and voltage of the DCDC high-voltage end. Integrate the power of the DCDC high-voltage end during the parking period to obtain the energy consumption of the DCDC high-voltage end. Calculate the average power of the DCDC high-voltage end according to the charging time.

[0109] The power of the DCDC low-voltage end is calculated based on the current and voltage of the DCDC low-voltage end. The power of the DCDC low-voltage end is integrated during the parking period to obtain the energy consumption of the DCDC low-voltage end. The average power of the DCDC low-voltage end is calculated based on the charging time.

[0110] The conversion efficiency of DCDC is calculated based on the energy consumption at the high-voltage end of DCDC and the energy consumption at the low-voltage end of DCDC.

[0111] The process of determining the power consumption information of the low-voltage battery is as follows: the power of the low-voltage battery is calculated according to the current and voltage of the low-voltage battery. The battery power of the low-voltage battery is integrated during the parking period to obtain the low-voltage energy consumption.

[0112] The backend server generates the vehicle power supply control method according to the acquired usage frequency information of each vehicle user on each function and the above-determined power consumption information.

[0113] In a specific implementation, the usage frequency information of each vehicle user for each function can be analyzed through the user's operating habits for each function. The user's operating habits for each function can be displayed in a visual manner to facilitate the analysis of the usage frequency information and power consumption information of each function.

[0114] like Figure 3 The usage overview panel of the remote control function shown reflects the user's operating habit information for each operating function. Figure 3 The number of vehicles operated, the average daily usage times and the trigger times of the vehicles under each remote control function are shown in the panel. Based on the above information, the frequency of use of each function by the vehicle user and the above determined power consumption information can be determined. It should be understood that the above remote control function usage overview panel only shows the number of vehicles operated, the average daily usage times and the trigger times of the vehicles under some remote control functions, and Figure 3The data in the data can be dynamically changed, and the above data can change for different seasons and time periods. Among them, considering the user's operating habits, the data of remote heating / defrosting functions only retrieves winter environmental data, and the data of car refrigerator functions only retrieves summer environmental data.

[0115] According to the above-mentioned vehicle user usage frequency information of each function, the steps of determining the power consumption information of DCDC, and the steps of determining the power consumption information of the low-voltage battery, the power information of each function when using the high-voltage battery and not using the high-voltage battery can be determined, as shown in Table 2.

[0116] Table 2

[0117]

[0118]

[0119] It can be seen from Table 2 that for each function (except the car refrigerator and sentry mode), the power consumed when the high-voltage battery is not used is less than the power consumed when the high-voltage battery is used, and under the average daily usage times of the user, when the low-voltage battery is fully charged, it can meet the energy consumption of the corresponding function. Therefore, for the above functions, when it is determined that the current power of the low-voltage battery meets the power demand of the above functions, the low-voltage battery can be used for power supply first.

[0120] Based on the above usage frequency information and power consumption information of each function, a vehicle power supply control method can be generated. The generated vehicle power supply control method can be updated by application software, and the updated target application software can be uploaded to the cloud. After the vehicle user downloads the updated target application software from the cloud, the power supply of the load in the vehicle can be controlled by operating the application software.

[0121] Those skilled in the art will appreciate that, in the above method of specific implementation, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of the steps should be determined by their functions and possible internal logic.

[0122] Based on the same inventive concept, a vehicle power supply control device corresponding to the vehicle power supply control method is also provided in the embodiment of the present disclosure. Since the principle of solving the problem by the device in the embodiment of the present disclosure is similar to the above-mentioned vehicle power supply control method in the embodiment of the present disclosure, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0123] Reference Figure 4 FIG. 1 is a schematic diagram of a vehicle power supply control device provided by an embodiment of the present disclosure, wherein the device comprises:

[0124] The judgment module 401 is used to judge whether the current power of the low-voltage battery meets the power demand of the target function according to the current power information of the low-voltage battery of the vehicle when a start request for the target function of the vehicle is detected during the parking of the vehicle;

[0125] A first control module 402 is used to control the low-voltage battery to supply power to a load corresponding to the target function when it is determined that the current power of the low-voltage battery meets the power demand of the target function;

[0126] The second control module 403 is used to control the high-voltage battery in the vehicle to supply power to the load corresponding to the target function when it is determined that the current power of the low-voltage battery does not meet the power demand of the target function.

[0127] In an optional implementation manner, before the step of determining whether the current power of the low-voltage battery meets the power demand of the target function after the determination module detects the start request for the target function of the vehicle, the device further includes:

[0128] A determination module, configured to determine a target attribute type corresponding to the target function from among a plurality of attribute types; the attribute type is related to the power demand of each function in the vehicle, and the power demand is related to the working time and power consumption of each function; the attribute types include a first type, a second type, and a third type, and the power demand corresponding to the second type is greater than the power demand of the first type and less than the power demand of the third type;

[0129] The judgment module 401 is specifically used for:

[0130] When it is determined that the target attribute type belongs to the second type, it is determined whether the current power of the low-voltage battery meets the power demand of the target function.

[0131] In an optional implementation, the device further includes:

[0132] The third control module is used to control the low-voltage battery to supply power to the load corresponding to the target function when it is determined that the target attribute type belongs to the first type.

[0133] In an optional implementation, the device further includes:

[0134] a fourth control module, for, when it is determined that the target attribute type belongs to the third type, if the current power of the low-voltage battery is greater than a first power threshold, controlling the low-voltage battery to supply power to the load corresponding to the target function, and monitoring the remaining power of the low-voltage battery;

[0135] The first switching module is used to switch to the high-voltage battery to supply power to the load corresponding to the target function when the remaining power is less than a second power threshold.

[0136] In an optional implementation, the device further includes:

[0137] A first power replenishment module, configured to replenish power for the low-voltage battery through the high-voltage battery while controlling the high-voltage battery in the vehicle to supply power to the load corresponding to the target function;

[0138] The second switching module is used to switch to the low-voltage battery to power the load corresponding to the target function if the current power of the low-voltage battery reaches the first power threshold during the process of the high-voltage battery powering the load corresponding to the target function.

[0139] In an optional implementation, the device further includes:

[0140] The fifth control module is used to control the high-voltage battery to supplement the low-voltage battery when the remaining power of the low-voltage battery is less than the third power threshold, until the power of the low-voltage battery reaches a fourth power threshold, and the fourth power threshold is less than the full power of the low-voltage battery.

[0141] In an optional implementation, the fourth power threshold is 80% to 96% of the full power.

[0142] For descriptions of the processing flow of each module in the device and the interaction flow between each module, reference may be made to the relevant descriptions in the above method embodiment, which will not be described in detail here.

[0143] An embodiment of the present disclosure also provides a vehicle, which includes: a controller, which may include: a memory for storing machine-readable instructions; and a processor for calling and executing the machine-readable instructions stored in the memory to implement the steps of the vehicle power supply control method described above.

[0144] Based on the same technical concept, the embodiment of the present disclosure also provides a computer device. Figure 5As shown, it is a schematic diagram of the structure of a computer device 500 provided in an embodiment of the present disclosure, including a processor 501, a memory 502, and a bus 503. Among them, the memory 502 is used to store execution instructions, including a memory 5021 and an external memory 5022; the memory 5021 here is also called an internal memory, which is used to temporarily store the operation data in the processor 501, and the data exchanged with the external memory 5022 such as a hard disk. The processor 501 exchanges data with the external memory 5022 through the memory 5021. When the computer device 500 is running, the processor 501 communicates with the memory 502 through the bus 503, so that the processor 501 executes the following instructions:

[0145] During the parking of the vehicle, if a start request for a target function of the vehicle is detected, judging whether the current power of the low-voltage battery meets the power demand of the target function according to the current power information of the low-voltage battery of the vehicle;

[0146] When it is determined that the current power of the low-voltage battery meets the power demand of the target function, controlling the low-voltage battery to supply power to a load corresponding to the target function;

[0147] When it is determined that the current power level of the low-voltage battery does not meet the power demand of the target function, the high-voltage battery in the vehicle is controlled to supply power to a load corresponding to the target function.

[0148] The embodiment of the present disclosure also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the vehicle power supply control method described in the above method embodiment are executed. The storage medium can be a volatile or non-volatile computer-readable storage medium.

[0149] The disclosed embodiment also provides a computer program product, which carries a program code. The program code includes instructions that can be used to execute the steps of the vehicle power supply control method described in the above method embodiment. For details, please refer to the above method embodiment, which will not be repeated here.

[0150] The computer program product may be implemented in hardware, software or a combination thereof. In one optional embodiment, the computer program product is implemented as a computer storage medium. In another optional embodiment, the computer program product is implemented as a software product, such as a software development kit (SDK).

[0151] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. In the several embodiments provided in the present disclosure, it should be understood that the disclosed device and method can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the device or unit can be electrical, mechanical or other forms.

[0152] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0153] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0154] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0155] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present disclosure, which are used to illustrate the technical solutions of the present disclosure, rather than to limit them. The protection scope of the present disclosure is not limited thereto. Although the present disclosure is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present disclosure, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A vehicle power supply control method, characterized in that: include: During the parking of the vehicle, if a start request for a target function of the vehicle is detected, judging whether the current power of the low-voltage battery meets the power demand of the target function according to the current power information of the low-voltage battery of the vehicle; When it is determined that the current power of the low-voltage battery meets the power demand of the target function, controlling the low-voltage battery to supply power to a load corresponding to the target function; When it is determined that the current power level of the low-voltage battery does not meet the power demand of the target function, the high-voltage battery in the vehicle is controlled to supply power to a load corresponding to the target function.

2. The method according to claim 1, characterized in that After detecting a start request for a target function of the vehicle, before determining whether the current power of the low-voltage battery meets the power demand of the target function, the method further includes: Determine a target attribute type corresponding to the target function among multiple attribute types; the attribute type is related to the power demand of each function in the vehicle, and the power demand is related to the working time and power consumption of each function; the attribute type includes a first type, a second type, and a third type, and the power demand corresponding to the second type is greater than the power demand of the first type and less than the power demand of the third type; The determining whether the current power of the low-voltage battery meets the power demand of the target function includes: When it is determined that the target attribute type belongs to the second type, it is determined whether the current power of the low-voltage battery meets the power demand of the target function.

3. The method according to claim 2, characterized in that The method further comprises: When it is determined that the target attribute type belongs to the first type, the low-voltage battery is controlled to supply power to a load corresponding to the target function.

4. The method according to claim 2, characterized in that: The method further comprises: In the case where it is determined that the target attribute type belongs to the third type, if the current power of the low-voltage battery is greater than the first power threshold, control the low-voltage battery to supply power to the load corresponding to the target function, and monitor the remaining power of the low-voltage battery; When the remaining power is less than a second power threshold, switching to the high-voltage battery to supply power to the load corresponding to the target function.

5. The method according to claim 4, characterized in that The method further comprises: While controlling the high-voltage battery in the vehicle to supply power to the load corresponding to the target function, the high-voltage battery is used to supplement power for the low-voltage battery; If the current power level of the low-voltage battery reaches the first power threshold during the process of the high-voltage battery supplying power to the load corresponding to the target function, the low-voltage battery is switched to supply power to the load corresponding to the target function.

6. The method according to claim 1, characterized in that The method further comprises: When the remaining power of the low-voltage battery is less than the third power threshold, the high-voltage battery is controlled to supplement power for the low-voltage battery until the power of the low-voltage battery reaches a fourth power threshold, and the fourth power threshold is less than the full power of the low-voltage battery.

7. The method according to claim 6, characterized in that The fourth power threshold is 80% to 96% of the full power.

8. A vehicle, characterized in that: include: A controller, the controller comprising: a memory for storing machine-readable instructions; A processor, configured to call and execute the machine-readable instructions stored in the memory to implement the steps of the vehicle power supply control method as described in any one of claims 1 to 7.

9. A computer device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the computer device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the steps of the vehicle power supply control method as described in any one of claims 1 to 7 are performed.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the vehicle power supply control method as described in any one of claims 1 to 7 are executed.

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