Low voltage energy management method and device

Abstract

The present application discloses a low-voltage energy management method and device. Among them, the method includes: obtaining the remaining available power, the first dynamic adjustment order and the second dynamic adjustment order of the low-voltage power supply system under the target working conditions, and when the remaining available power is less than the first preset threshold, the power of multiple functions is adjusted in sequence according to the first dynamic adjustment order until the remaining available power is greater than the second preset threshold or the power of multiple functions is adjusted, and the power adjustment times of each function are no more than once, and when the power of multiple functions is adjusted and the remaining available power is not greater than the second preset threshold, the switch state of multiple functions is adjusted in sequence according to the second dynamic adjustment order until the remaining available power is greater than the second preset threshold or the switch state of multiple functions is adjusted. According to the embodiment of the present application, it is possible to meet the actual needs of users and enhance user experience.

Description

Technical Field

[0001] The present application belongs to the field of vehicle electronic technology, and in particular relates to a low-voltage energy management method and device. Background Art

[0002] As national standards set increasingly higher limits on vehicle fuel consumption and electricity consumption, vehicle energy management is receiving more and more attention.

[0003] Currently, low-voltage energy management methods used in vehicles typically classify batteries based on state of charge (SOC) or voltage, then establish fixed regulation mechanisms based on the classification results. Functional management is then performed based on these energy levels and fixed regulation mechanisms. To improve applicability, some solutions may separate the regulation mechanisms into static and dynamic operating condition regulation mechanisms, with each controller then independently controlling its functions based on the energy levels and fixed regulation mechanisms.

[0004] But in reality, the fixed adjustment mechanism may not match the user's actual needs for the vehicle, resulting in a lower user experience. Summary of the Invention

[0005] The embodiments of the present application provide a low-voltage energy management method, apparatus, device, and computer-readable storage medium that can meet the actual needs of users and enhance user experience.

[0006] In a first aspect, an embodiment of the present application provides a low-voltage energy management method, the method comprising:

[0007] Obtaining the remaining available power of the low-voltage power supply system under a target operating condition, and a first dynamic adjustment order and a second dynamic adjustment order of multiple functions in the low-voltage power supply system under the target operating condition,

[0008] When the remaining available power is less than the first preset threshold, the power of the multiple functions is adjusted in sequence according to the first dynamic adjustment order until the remaining available power is greater than the second preset threshold, or the power of the multiple functions is adjusted, wherein the power of each function is adjusted no more than once, and the second preset threshold is greater than the first preset threshold,

[0009] When the power of the multiple functions has been adjusted and the remaining available power is not greater than the second preset threshold, the switch states of the multiple functions are adjusted in sequence according to the second dynamic adjustment order until the remaining available power is greater than the second preset threshold, or the switch states of the multiple functions have been adjusted.

[0010] In a possible implementation, obtaining the second dynamic adjustment order includes:

[0011] obtaining an initial adjustment order of the plurality of functions under the target operating condition,

[0012] acquiring the switch states respectively corresponding to the plurality of functions in the initial adjustment sequence,

[0013] The functions whose switch states are off are deleted from the initial adjustment order to obtain the second dynamic adjustment order.

[0014] In a possible implementation, obtaining the first dynamic adjustment order includes:

[0015] Obtaining the powers respectively corresponding to the plurality of functions in the second dynamic adjustment order and the first dynamic adjustment limit power,

[0016] For each of the functions, determining a magnitude relationship between the power and the first dynamically adjusted limited power;

[0017] The functions whose power is not greater than the first dynamic adjustment limit power are deleted from the second dynamic adjustment order to obtain the first dynamic adjustment order.

[0018] In a possible implementation, the method further includes:

[0019] Detecting the remaining available power according to a preset period,

[0020] When the change in the remaining available power is greater than a third preset threshold, detecting the operating states of the multiple functions, the operating states including at least one of the power and the switch state;

[0021] The first dynamic adjustment order and the second dynamic adjustment order are updated according to the working status.

[0022] In a possible implementation, updating the first dynamic adjustment order and the second dynamic adjustment order according to the working state includes:

[0023] When the switch state of the first function changes from the on state to the off state, the first function is deleted from the second dynamic adjustment order to obtain an updated second dynamic adjustment order, wherein the first function is any one of the multiple functions.

[0024] In a case where the first dynamic adjustment order includes the first function, the first function is deleted from the first dynamic adjustment order to obtain an updated first dynamic adjustment order.

[0025] In a possible implementation, updating the first dynamic adjustment order and the second dynamic adjustment order according to the working state includes:

[0026] When the working state of the second function changes from the off state to the on state, the second function is added to the second dynamic adjustment order according to the priorities corresponding to the multiple functions in the initial adjustment order to obtain an updated second dynamic adjustment order, where the second function is any one of the multiple functions.

[0027] When the power of the second function is greater than the first dynamic adjustment limit power, the second function is added to the first dynamic adjustment order according to the priorities corresponding to the multiple functions in the updated second dynamic adjustment order to obtain the updated first dynamic adjustment order.

[0028] In a possible implementation, updating the first dynamic adjustment order and the second dynamic adjustment order according to the working state includes:

[0029] When the power of the third function changes and the changed power is greater than the first dynamic adjustment limit power, the third function is added to the first dynamic adjustment order according to the priorities corresponding to the multiple functions in the second dynamic adjustment order to obtain an updated first dynamic adjustment order, and the third function is any one of the multiple functions.

[0030] In one possible implementation, obtaining the remaining available power of the low-voltage power supply system under the target operating condition includes:

[0031] Obtaining the available power of the low-voltage power supply system, the rated power consumption of the multiple functions under the target operating conditions, the actual power consumption of the multiple functions under the target operating conditions, and the safety reserved power,

[0032] The remaining available power of the low-voltage power supply system under the target operating conditions is calculated according to the following formula:

[0033] P eavl =P e -P bas -P load -P safe ,

[0034] Among them, P eavl is the remaining available power of the low-voltage power supply system under the target operating conditions, P e is the available power of the low voltage power supply system, P bas is the rated power consumption of the multiple functions under the target operating conditions, P loadis the actual power consumption of the multiple functions under the target working condition, P safe Power is reserved for the safety.

[0035] In a possible implementation, obtaining the available power of the low-voltage power supply system includes:

[0036] Obtain the available power of the low-voltage battery, the available power of the DC converter, the rated power of the low-voltage battery, the rated power of the DC converter, the health impact coefficient of the low-voltage battery, the temperature impact coefficient of the low-voltage battery, and the fault level impact coefficient of the DC converter,

[0037] The available power of the low-voltage power supply system is calculated according to the following formula:

[0038] P e =P bat +P DCDC ,

[0039] P bat =P SOC *η SOH *η Tem ,

[0040] P DCDC =P DCDCrat *η fault ,

[0041] Among them, P e is the available power of the low voltage power supply system, P bat is the available power of the low-voltage battery, P DCDC is the available power of the DC converter, P SOC is the rated power of the low-voltage battery, P DCDCrat is the rated power of the DC converter, η SOH is the health impact coefficient of the low-voltage battery, η Tem is the temperature influence coefficient of the low-voltage battery, η fault is the fault level influence coefficient of the DC converter.

[0042] In a second aspect, an embodiment of the present application provides a low-voltage energy management device, the device comprising:

[0043] an acquisition module, configured to acquire the remaining available power of the low-voltage power supply system under a target operating condition, a first dynamic adjustment order and a second dynamic adjustment order of multiple functions in the low-voltage power supply system under the target operating condition,

[0044] a first adjustment module, configured to, when the remaining available power is less than a first preset threshold, sequentially adjust the power of the multiple functions according to the first dynamic adjustment order until the remaining available power is greater than a second preset threshold, or the power of the multiple functions is adjusted, wherein the power of each function is adjusted no more than once, and the second preset threshold is greater than the first preset threshold,

[0045] The second adjustment module is used to adjust the switch states of the multiple functions in sequence according to the second dynamic adjustment order when the power of the multiple functions has been adjusted and the remaining available power is not greater than the second preset threshold, or the switch states of the multiple functions have been adjusted.

[0046] In a third aspect, an embodiment of the present application provides an electronic device, the device comprising: a processor and a memory storing computer program instructions,

[0047] When the processor executes the computer program instructions, the method in any possible implementation method of the first aspect described above is implemented.

[0048] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having computer program instructions stored thereon. When the computer program instructions are executed by a processor, the method of any possible implementation method in the first aspect described above is implemented.

[0049] In an embodiment of the present application, by sequentially adjusting the power of multiple functions in the low-voltage power supply system according to a first dynamic adjustment order corresponding to the target operating condition when the remaining available power corresponding to the target operating condition is less than a first preset threshold, it is possible to manage functions according to the actual operating condition of the vehicle and the remaining available power, thereby meeting the actual needs of the user. By sequentially adjusting the switch states of multiple functions according to a second dynamic adjustment order corresponding to the target operating condition when the power of multiple functions has been adjusted and the remaining available power is not greater than a second preset threshold, that is, by a two-stage adjustment mechanism of first adjusting the power of the function and then adjusting the switch state of the function, it is possible to avoid user discomfort caused by sudden changes in the state of the function and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0051] Figure 1This is a schematic diagram of the structure of a low-voltage energy management system provided by an embodiment of the present application.

[0052] Figure 2 This is a flow chart of a low-voltage energy management method provided in an embodiment of the present application.

[0053] Figure 3 This is a schematic diagram of the definition and jump relationship of a vehicle operating condition provided in an embodiment of the present application.

[0054] Figure 4 is a flow chart of sorting the first dynamic adjustment order and the second dynamic adjustment order provided by an embodiment of the present application.

[0055] Figure 5 This is a schematic diagram of a rolling reordering process provided by an embodiment of the present application.

[0056] Figure 6 This is a flow chart of a function adjustment process provided by an embodiment of the present application.

[0057] Figure 7 This is a schematic diagram of a load regulation path of a functional domain architecture provided in an embodiment of the present application.

[0058] Figure 8 This is a schematic diagram of a load regulation path of a regional architecture provided in an embodiment of the present application.

[0059] Figure 9 This is a structural diagram of a low-voltage energy management device provided in an embodiment of the present application.

[0060] Figure 10 This is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0061] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0063] As described in the background technology section, the existing solutions do not consider the impact of the DC converter (DCDC) and the actual functional working conditions when calculating the available power / energy level. The operating conditions of the entire vehicle are not fully considered during the formulation of the regulation mechanism, and dynamic adjustment is not implemented. Therefore, the low-voltage system power cannot be fully utilized, and the actual needs of users cannot be fully met. At the same time, as a vehicle-level regulation function, energy management depends on the implementation of various functions of the entire vehicle, that is, it is strongly related to the electronic and electrical architecture of the entire vehicle. The current energy management solution does not fully consider the matching with the entire vehicle architecture, so its feasibility and applicability need to be improved.

[0064] Thus, in order to solve the problems of the prior art, the embodiments of the present application provide a low-voltage energy management method, apparatus, device and computer-readable storage medium.

[0065] The following first introduces the low-voltage energy management system provided by this application.

[0066] Figure 1 FIG. 1 shows a schematic diagram of a low-voltage energy management system provided by an embodiment of the present application. Figure 1 As shown, the low-voltage energy management system 100 provided in the embodiment of the present application includes the following modules:

[0067] The low-voltage power supply system available power calculation module 11 is used to calculate the power supply capacity of the low-voltage power supply, wherein the low-voltage power supply includes a low-voltage battery and a DC converter.

[0068] The low-voltage power supply system remaining available power calculation module 12 is used to calculate the remaining available power of the low-voltage power supply system according to the power supply capacity of the low-voltage power supply and the actual functional consumption.

[0069] The vehicle operating condition judgment module 13 is used to judge the current operating condition of the vehicle based on the vehicle information. The vehicle information may include power mode, gear position, speed, main driver's door status, main driver's seat belt status, etc.

[0070] The function adjustment dynamic sorting module 14 is used to select an initial adjustment order according to the vehicle working condition and sort the first dynamic adjustment order and the second dynamic adjustment order.

[0071] The function adjustment control module 15 is configured to adjust the working state of the function according to the first dynamic adjustment order and / or the second dynamic adjustment order and their corresponding restriction strategies.

[0072] The following is an introduction to the low-voltage energy management method provided in the embodiments of the present application.

[0073] Figure 2 FIG. 1 shows a flow chart of a low-voltage energy management method provided by an embodiment of the present application. Figure 2 As shown, the low-voltage energy management method provided in the embodiment of the present application includes steps S210 to S230.

[0074] S210: Obtain the remaining available power of the low-voltage power supply system under the target operating condition, and a first dynamic adjustment order and a second dynamic adjustment order of multiple functions in the low-voltage power supply system under the target operating condition.

[0075] Here, the target operating condition may be any one of a plurality of vehicle operating conditions, wherein the vehicle operating condition may represent the current usage state of the vehicle, that is, the vehicle operating condition may reflect the actual vehicle usage needs of the user.

[0076] As an example, the vehicle operating condition judgment module in the low-voltage energy management system can divide the vehicle into the following four operating conditions: driving condition, high-voltage power-on parking condition, low-voltage power-on parking condition and low-voltage power-off parking condition. The definition and jump relationship of the vehicle operating condition can be as follows: Figure 3 shown.

[0077] like Figure 3 As shown, the driving condition can indicate that the user is driving the vehicle or is about to drive the vehicle. The vehicle can be considered to be in the driving condition when any of the following conditions are met: (1) the gear is in D gear or R gear, (2) the gear is in N gear and the vehicle speed is greater than 3km / h, (3) the gear is in N gear or P gear and the vehicle speed is less than 3km / h, the high voltage is on, the main driving door is closed, and the main driving seat belt is fastened. Among them, if the vehicle speed is less than 3km / h, it can be considered that the vehicle is stationary.

[0078] The high-voltage powered parking condition may indicate that the user may have the need to stay in the vehicle for a long time or use the vehicle statically. Specifically, except for the power system, all other functions of the vehicle are available, and both the high and low voltage systems are powered on. The vehicle can be considered to be in the high-voltage powered parking condition when any of the following conditions are met: (1) the gear is in N or P gear, the high voltage is powered on, the speed is less than 3km / h, and the main driver's door is open or the main driver's seat belt is not fastened; (2) the vehicle is in the process of external charging and discharging.

[0079] The low-voltage power-on parking condition indicates that the user may need to take a short break in the vehicle. Specifically, some functions powered by the low-voltage power supply system are available, the high-voltage system is powered off, and the low-voltage system is powered on. The vehicle is considered to be in the low-voltage power-on parking condition if the following conditions are met: the gear is in N or P, the low-voltage power is on, and the vehicle speed is less than 3 km / h.

[0080] The low-voltage power-off parking condition indicates that the user has no immediate need to use the vehicle. Both the high and low voltage systems are powered off, and most vehicle functions, except for pre-set functions, are unavailable. A vehicle is considered to be in the low-voltage power-off parking condition when the following conditions are met: the gear is in N or P, the power is off, and the vehicle speed is less than 3 km / h. Pre-set functions can be pre-set by the vehicle manufacturer and may include, for example, the trunk light and reading light.

[0081] In addition, the jump relationship between the above four working conditions can be shown as follows:

[0082] If the gear is switched to N / P and the main driver's door is opened, or the seat belt is unfastened and the vehicle is stationary, or the vehicle is started to charge, the vehicle can be switched from the driving state to the high-voltage power-on parking state.

[0083] If the gear is switched to D / R, or the main driving door is closed and the seat belt is fastened and the charging gun is not connected, the vehicle can be switched from the high-voltage powered parking condition to the driving condition.

[0084] If the high voltage is turned off, the vehicle can switch from the high voltage parking state to the low voltage parking state.

[0085] If the high voltage is on, the vehicle can switch from the low voltage parking state to the high voltage parking state.

[0086] If the low voltage is turned off, the vehicle can switch from the low voltage power-on parking state to the low voltage power-off parking state.

[0087] If the low voltage is powered on, the vehicle can switch from the low voltage power-off parking condition to the low voltage power-on parking condition.

[0088] If both high voltage and low voltage are powered off, the vehicle can switch from driving mode to low voltage powered parking mode.

[0089] If the high voltage is powered on and the gear is switched to D / R, the vehicle can switch from the low voltage electric parking condition to the driving condition.

[0090] In addition, the remaining available power of the low-voltage power supply system under the target operating conditions can be calculated based on the power supply capacity of the low-voltage power supply and the actual functional consumption.

[0091] Based on this, in order to determine the remaining available power of the low-voltage power supply system under the target operating condition, in some embodiments, obtaining the remaining available power of the low-voltage power supply system under the target operating condition may include:

[0092] Obtain the available power of the low-voltage power supply system, the rated power consumption of multiple functions under the target working conditions, the actual power consumption of multiple functions under the target working conditions, and the safety reserved power,

[0093] The remaining available power of the low-voltage power supply system under the target operating conditions is calculated according to the following formula:

[0094] P eavl =P e -P bas -P load -P safe ,

[0095] Among them, P eavl is the remaining available power of the low-voltage power supply system under the target working conditions, P e is the available power of the low voltage power supply system, P bas is the rated power consumption of multiple functions under target working conditions, P load is the actual power consumption of multiple functions under target working conditions, P safe Reserve power for safety.

[0096] Here, the low voltage power supply system remaining available power calculation module can execute the above formula. bas It can be the sum of the rated power consumption of multiple functions under target operating conditions. Multiple functions can be basic functions in the vehicle. Under driving conditions, the load corresponding to a basic function may include, for example, the power assist motor and plunger pump involved in the braking function. To ensure the normal operation of the basic function, even if the function switch state is off (the function corresponding to the load is not turned on), the rated power consumption required to turn on the function can still be retained for the function.

[0097] In addition, P loadIt can be the sum of the actual power consumption of multiple functions under the target working conditions, which can be calculated cumulatively according to the function-load power correspondence table. The function-load power correspondence table can be shown in Table 1.

[0098] Table 1

[0099]

[0100]

[0101] It should be noted that if the vehicle architecture is a functional domain architecture, the electronic control unit (ECU) of each load, that is, the execution ECU, may not feed back the power consumption to the domain controller. Therefore, the domain controller needs to find the corresponding load and the power of the load in the current operating state based on the current function's operating status. This requires the deployment of a function-load power consumption correspondence table in the domain controller in advance.

[0102] In addition, the safety reserve power can be used to enable functions and consume energy caused by power fluctuations. The safety reserve power corresponding to different vehicles can be different.

[0103] Based on this, in order to determine the available power of the low-voltage power supply system, in some embodiments, obtaining the available power of the low-voltage power supply system may include:

[0104] Obtain the available power of the low-voltage battery, the available power of the DC converter, the rated power of the low-voltage battery, the rated power of the DC converter, the health impact coefficient of the low-voltage battery, the temperature impact coefficient of the low-voltage battery, and the fault level impact coefficient of the DC converter.

[0105] The available power of the low-voltage power supply system is calculated according to the following formula:

[0106] P e =P bat +P DCDC ,

[0107] P bat =P SOC *η SOH *η Tem ,

[0108] P DCDC =P DCDCrat *η fault ,

[0109] Among them, P e is the available power of the low voltage power supply system, P bat is the available power of the low-voltage battery, P DCDC is the available power of the DC converter, PSOC is the rated power of the low-voltage battery, P DCDCrat is the rated power of the DC converter, η SOH is the health impact coefficient of the low-voltage battery, η Tem is the temperature influence coefficient of the low-voltage battery, η fault is the fault level influence coefficient of the DC converter.

[0110] Here, the low-voltage power supply system available power calculation module can execute the above formula. Among them, the low-voltage power supply system available power can represent the power supply capacity of the low-voltage power supply, including the low-voltage battery and the DC converter. Among them, the DC converter (DCDC) can convert high-voltage DC power into low-voltage DC power that can be used by low-voltage electrical equipment. In addition, P SOC It can be the available power of the low-voltage battery obtained by looking up the SOC table, which can be provided by the low-voltage battery supplier or obtained through experiments. SOH It can be provided by the low-voltage battery supplier or obtained through experiments. Tem It can be provided by the low-voltage battery supplier or obtained through experiments. fault It can be provided by the DCDC supplier or obtained through experiments.

[0111] In addition, the first dynamic adjustment order can be an adjustment order for power adjustment of multiple functions. The second dynamic adjustment order can be an adjustment order for switching state adjustment of multiple functions. The first dynamic adjustment order and the second dynamic adjustment order can change at different times. Specifically, the function adjustment dynamic sequencing module can update the first dynamic adjustment order and the second dynamic adjustment order based on the initial adjustment order under the target working condition and the current operating status of the function (the working status of the load).

[0112] Since the first dynamic adjustment order and / or the second dynamic adjustment order may be related to the working state of the load, in order to obtain the second dynamic adjustment order that meets user needs and improve user experience, in some embodiments, obtaining the second dynamic adjustment order may include:

[0113] Obtain the initial adjustment order of multiple functions under target conditions,

[0114] Get the switch status corresponding to the multiple functions in the initial adjustment sequence,

[0115] The functions whose switch states are closed are deleted from the initial adjustment sequence to obtain a second dynamic adjustment sequence.

[0116] Here, the initial adjustment order corresponding to different vehicle operating conditions may be different and may be determined by the vehicle manufacturer according to the vehicle operating conditions.

[0117] As an example, the initial adjustment order under driving conditions can be as shown in the 5th column <Initial Adjustment Order> in Table 2. Among them, Table 2 can be a dynamic sorting table of function adjustments under driving conditions. As shown in Table 2, the initial adjustment order corresponding to the turn signal, low beam and high beam is 0, then the turn signal, low beam and high beam may not participate in the sorting. That is, the turn signal, low beam and high beam are functions that must be retained in the vehicle, and the turn signal, low beam and high beam are uncontrollable functions. In addition, as shown in Table 2, the initial adjustment order corresponding to each function can be: driver's seat heating>front air conditioning air volume>music volume>ambience light. That is, driver's seat heating, front air conditioning air volume, music volume and atmosphere light are controllable functions.

[0118] In addition, as shown in Table 2, a second dynamic adjustment restriction strategy can be pre-set. This restriction strategy can be formulated based on factors such as vehicle positioning and the vehicle function list, as shown in the fourth column of Table 2. The second dynamic adjustment restriction strategy can specifically correspond to the switch state restriction of the function. Specifically, as shown in Table 2, the current operating state of the driver's seat heating is on - gear 3, that is, the switch state is on. The second dynamic adjustment order restriction strategy corresponding to the driver's seat heating is off. Because the current switch state of the driver's seat heating is different from the second dynamic adjustment order restriction strategy, the driver's seat heating does not meet the second dynamic adjustment order restriction strategy. In other words, the driver's seat heating can participate in the sorting of the second dynamic adjustment order. Because the corresponding switching state of the ambient light is off, the ambient light strip can not participate in the sorting of the second dynamic adjustment order. In other words, as shown in Table 2, the second dynamic adjustment order corresponding to each function can be: driver's seat heating > front air conditioning air volume > music volume.

[0119] In this way, by sorting the second dynamic adjustment order according to the initial adjustment order of the functions and the switch status, a second dynamic adjustment order that meets the user's needs can be obtained, thereby improving the user experience.

[0120] Table 2

[0121]

[0122] Based on this, in order to obtain the first dynamic adjustment order that meets user needs and improve user experience, in some embodiments, obtaining the first dynamic adjustment order may include:

[0123] Obtaining powers respectively corresponding to a plurality of functions in the second dynamic adjustment order and the first dynamic adjustment limit power,

[0124] For each function, determine the magnitude relationship between the power and the first dynamic adjustment limit power,

[0125] The functions whose power is not greater than the first dynamic adjustment limit power are deleted from the second dynamic adjustment order to obtain the first dynamic adjustment order.

[0126] Here, the first dynamic adjustment limit power may be a power corresponding to the first dynamic adjustment limit strategy.

[0127] As an example, as shown in Table 2, a first dynamic adjustment restriction strategy can be pre-set. This restriction strategy can be formulated based on factors such as vehicle positioning and the vehicle's function list, as shown in column 3 of Table 2. The first dynamic adjustment restriction strategy can specifically correspond to the gear / power limit of a function. Specifically, as shown in Table 2, the current operating state of the driver's seat heating is on - gear 3, and the first dynamic adjustment order restriction strategy corresponding to the driver's seat heating is gear 1. Since gear 3 is greater than gear 1, that is, the current power of the driver's seat heating is greater than the first dynamic adjustment limit power, the driver's seat heating does not meet the first dynamic adjustment order restriction strategy. In other words, the driver's seat heating can participate in the first dynamic adjustment order sorting. Since the current gear of the front air conditioning air volume is less than gear 2 and less than gear 4, the front air conditioning air volume can be excluded from the first dynamic adjustment order sorting. In other words, as shown in Table 2, the first dynamic adjustment order corresponding to each function can be: driver's seat heating > music volume.

[0128] In this way, by sorting the first dynamic adjustment order according to the second dynamic adjustment order of function and power, the first dynamic adjustment order that meets the user's needs can be obtained, thereby improving the user experience.

[0129] As an example, the flowchart for sorting the first dynamic adjustment order and the second dynamic adjustment order can be as follows: Figure 4 shown.

[0130] like Figure 4 As shown, sorting the first dynamic adjustment order and the second dynamic adjustment order may include the following steps:

[0131] S41, detect the switch status of multiple functions in sequence according to the initial adjustment order,

[0132] S42, determine whether the target function is in the on state, if so, execute S43, if not, execute S44,

[0133] S43, the target function participates in the sorting of the second dynamic adjustment order,

[0134] S44: The target function does not participate in the sorting of the second dynamic adjustment order.

[0135] S45: Determine whether the current power of the target function is greater than the first dynamic adjustment limit power. If so, execute S46; if not, execute S47.

[0136] S46, the target function participates in the sorting of the first dynamic adjustment order,

[0137] S47. The target function does not participate in the sorting of the first dynamic adjustment order.

[0138] Here, the target function can be any one of multiple functions. Specifically, after the vehicle is powered on for a preset time, the function adjustment dynamic sorting module can start the first dynamic sorting. The function adjustment dynamic sorting module can detect the activation status of the controllable functions according to the initial adjustment order under the target working conditions. If the function is turned on, the upward filling method can be used to add the second dynamic adjustment order. If the function is turned off, the function sorting can be eliminated. Afterwards, the current power of the turned-on function can be detected. If the current power is greater than the power limit of the first dynamic adjustment order, the upward filling method can be used to enter the first dynamic adjustment order. Otherwise, the function sorting can be eliminated. Among them, the upward filling method is for example: the initial adjustment order is A>B>C, and B does not participate in the second dynamic adjustment order, then C can be filled upward, that is, the second dynamic adjustment order can be A>C.

[0139] Based on this, in order to reduce resource consumption of the low-voltage power supply system, in some embodiments, the following steps may also be included:

[0140] Detect the remaining available power according to the preset cycle.

[0141] When the change in the remaining available power is greater than a third preset threshold, the operating states of the plurality of functions are detected, where the operating states include at least one of power and switch states.

[0142] The first dynamic adjustment order and the second dynamic adjustment order are updated according to the working status.

[0143] Here, after the initial dynamic sorting is completed, the function adjustment dynamic sorting module can use a rolling detection mechanism to detect function changes. If a function change is detected and the remaining available power change exceeds a set third threshold, a rolling re-sorting can be initiated, that is, the first dynamic adjustment order and the second dynamic adjustment order are updated.

[0144] Based on this, in some embodiments, updating the first dynamic adjustment order and the second dynamic adjustment order according to the working status may include:

[0145] When the switch state of the first function changes from the on state to the off state, the first function is deleted from the second dynamic adjustment order to obtain an updated second dynamic adjustment order, where the first function is any one of the multiple functions.

[0146] In a case where the first dynamic adjustment order includes the first function, the first function is deleted from the first dynamic adjustment order to obtain an updated first dynamic adjustment order.

[0147] In some embodiments, updating the first dynamic adjustment order and the second dynamic adjustment order according to the working status may further include:

[0148] When the working state of the second function changes from the off state to the on state, the second function is added to the second dynamic adjustment order according to the priorities corresponding to the multiple functions in the initial adjustment order to obtain an updated second dynamic adjustment order, where the second function is any one of the multiple functions.

[0149] When the power of the second function is greater than the first dynamic adjustment limit power, the second function is added to the first dynamic adjustment order according to the priorities corresponding to the multiple functions in the updated second dynamic adjustment order to obtain the updated first dynamic adjustment order.

[0150] In some embodiments, updating the first dynamic adjustment order and the second dynamic adjustment order according to the working status may further include:

[0151] When the power of the third function changes and the changed power is greater than the first dynamic adjustment limit power, the third function is added to the first dynamic adjustment order according to the priorities corresponding to multiple functions in the second dynamic adjustment order to obtain an updated first dynamic adjustment order, and the third function is any one of the multiple functions.

[0152] Based on the above embodiments, a specific example is given.

[0153] The flowchart of rolling reordering can be as follows Figure 5 As shown, the sorting results can be shown in columns 6 and 7 of Table 2. The detailed sorting process includes the following steps:

[0154] S51, detect whether the controllable function has changed, if so, execute S52, if not, execute S51 again according to the preset cycle,

[0155] S52: Determine whether the change in the remaining available power is greater than a third preset threshold. If so, execute S53; if not, execute S54.

[0156] S53, start scrolling reordering,

[0157] S54, maintain the current dynamic sorting,

[0158] S55, determine the function change state, if the function is closed, execute S56, if the function is opened, execute S57, if the function is adjusted, execute S58,

[0159] S56: Delete the function in the second dynamic adjustment order, and rank the subsequent functions by -1, and generate a new second dynamic adjustment order. Then, execute S59.

[0160] S57, based on the initial power supply priority, insert the sequence immediately adjacent to the function in the second dynamic order, and increase the subsequent function order by +1 to generate a new second dynamic adjustment order, and then execute S510,

[0161] S58: The second dynamic adjustment order remains unchanged, and then S510 is executed.

[0162] S59, determine whether the function is in the first dynamic adjustment order, if so, execute S511, if not, execute S512,

[0163] S510: Determine whether the power after the function is turned on / adjusted exceeds the first dynamic adjustment order limit. If so, execute S513; if not, execute S512.

[0164] S511, delete the function in the first dynamic adjustment order, sort the subsequent functions by -1, and generate a new first dynamic adjustment order.

[0165] S512, maintain the current first dynamic adjustment order,

[0166] S513 : According to the second dynamic adjustment order, insert the sequence immediately adjacent to the function in the first dynamic adjustment order, and increase the order of the subsequent functions by 1 to generate a new first dynamic adjustment order.

[0167] Therefore, by updating the first dynamic adjustment order and the second dynamic adjustment order according to the working status of the function in accordance with the preset cycle, the actual needs of the user can be met in real time and the user experience can be improved.

[0168] After obtaining the first and second dynamic adjustment orders, function adjustments can be performed based on these orders. Specifically, the function adjustment control module is responsible for adjusting the operating status of controllable functions based on the first and second dynamic adjustment orders. To maximize user satisfaction while ensuring vehicle safety, function adjustments can employ a two-level adjustment mechanism.

[0169] S220. When the remaining available power is less than the first preset threshold, the power of multiple functions is adjusted in sequence according to the first dynamic adjustment order until the remaining available power is greater than the second preset threshold, or the power of multiple functions is adjusted, wherein the power of each function is adjusted no more than once, and the second preset threshold is greater than the first preset threshold.

[0170] S230. When the power of multiple functions has been adjusted and the remaining available power is not greater than the second preset threshold, the switch states of multiple functions are adjusted in sequence according to the second dynamic adjustment order until the remaining available power is greater than the second preset threshold, or the switch states of multiple functions have been adjusted.

[0171] Here, the first preset threshold value may be a value not less than 0. If the first preset threshold value is 0, it can be considered that the remaining available power has reached a limit, and the operating state of the function needs to be adjusted to meet the actual needs of the user. In addition, the second preset threshold value may be greater than the first preset threshold value to avoid frequent adjustments to the operating state of the function and improve the user experience.

[0172] It should be noted that during the execution of the first and second dynamic adjustment sequences, a delayed adjustment mechanism can be employed to prevent fluctuations in the low-voltage system caused by sudden changes in power consumption. That is, after the previous load is adjusted, a delay can be set before adjusting the next load. The specific interval can be pre-set based on the load type.

[0173] As an example, the flow chart of function adjustment can be as follows: Figure 6 As shown, the detailed adjustment process includes the following steps:

[0174] S61: Determine whether the remaining available power of the low-voltage system is less than 0W. If so, execute S62; if not, return to execute S61.

[0175] S62, execute in sequence according to the first dynamic adjustment order and strategy,

[0176] S63, determine whether the remaining power of the low-voltage power supply system is greater than a second preset threshold, if so, execute S69, if not, execute S64,

[0177] S64: Determine whether the first dynamic adjustment sequence is completed. If so, execute S65; if not, execute S62.

[0178] S65, execute in sequence according to the second dynamic adjustment order and strategy,

[0179] S66: Determine whether the remaining power of the low-voltage power supply system is greater than a second preset threshold. If so, execute S69; if not, execute S67.

[0180] S67: Determine whether the second dynamic adjustment sequence is completed. If so, execute S68; if not, execute S65.

[0181] S68, reminds the user that the vehicle has a fault and needs to be repaired as soon as possible.

[0182] S69. Complete this function adjustment.

[0183] The low-voltage energy management method of the embodiment of the present application can manage functions according to the actual working condition of the vehicle and the remaining available power by adjusting the power of multiple functions in the low-voltage power supply system in sequence according to a first dynamic adjustment order corresponding to the target working condition when the remaining available power corresponding to the target working condition is less than a first preset threshold value. When the power of multiple functions has been adjusted and the remaining available power is not greater than a second preset threshold value, the switch state of multiple functions is adjusted in sequence according to a second dynamic adjustment order corresponding to the target working condition. That is, through a two-stage adjustment mechanism of first adjusting the power of the function and then adjusting the switch state of the function, it is possible to avoid user discomfort caused by sudden changes in the state of the function and improve the user experience.

[0184] The low-voltage energy management method in this solution can be applied to any vehicle architecture. The following describes the low-voltage energy management method for functional domain architecture and regional architecture, respectively.

[0185] The dynamic adjustment strategy in the functional domain architecture is built into the functional domain controller. For loads directly driven by the domain controller, they can be adjusted directly by the domain controller. For loads driven by controllers under the domain controller, the domain controller sends load work limit instructions, and the specific controller performs load adjustment. The schematic diagram of the load adjustment path of the functional domain architecture can be shown as follows: Figure 7 shown.

[0186] like Figure 7 As shown, the Body Domain Control Unit (BDCU) can control functions based on the remaining available power of the low-voltage system, vehicle operating conditions, and function adjustment order. The BDCU can directly control the turn signals, low-beam, high-beam, and ambient lighting. Functions such as seat heating, air conditioning air volume, and multimedia volume can be driven by the specific execution controller, the Electronic Control Unit (ECU). Specifically, the BDCU can directly adjust the power of the turn signals, low-beam, high-beam, and ambient lighting based on the adjustment strategy. The BDCU can send a seat heating level limit to the Driver Seat Control Unit (DSCU), which adjusts the power of the driver's seat thermistor (Positive Temperature Coefficient (PTC)). The BDCU can send an air conditioning air volume limit to the Air Conditioning Controller (AC), which adjusts the power of the AC blower. The BDCU can send a multimedia volume limit to the Media Control Unit (MDCU), which adjusts the power of the speakers.

[0187] The overall strategy of low-voltage energy management under the regional architecture is basically the same as that of the functional domain architecture, so I will not elaborate on it here. The difference lies in the final load regulation path. The schematic diagram of the load regulation path of the regional architecture can be shown as follows: Figure 8 shown.

[0188] like Figure 8 As shown, the central controller (One Intelligent Brain, OIB) can adjust the dynamic sorting according to the vehicle operating conditions and the calculation function of the remaining available power of the low-voltage system, and realize the adjustment of different loads through the regional controller (Vehicle Infranet Unit, VIU). It is important to note that, unlike the functional domain architecture, the loads involved in the same function in the regional architecture may be controlled by different VIUs. Specifically, the turn signal function can be jointly driven by the left front VIU (VIU-FrontLeft, VIU-FL), the right front VIU (VIU-FrontRight, VIU-FR), the left rear VIU (VIU-RearLeft, VIU-RL) and the right rear VIU (VIU-RearRight, VIU-RR). Therefore, the OIB can send the turn signal restriction information to the four VIUs at the same time, and each VIU adjusts the corresponding turn signal. Similarly, the adjustment of low beam and high beam requires the joint execution of VIU_FL and VIU_FR. The ambient lighting, driver's seat PTC, and air conditioning blower can be driven by the VIU_FL. Therefore, the OIB can send ambient lighting brightness limits, driver's seat heating level limits, and air conditioning air volume limits to the VIU_FL, which then performs load regulation. The multimedia speakers can be driven by the VIU_FR, so the OIB can send multimedia volume limits to the VIU_FR, which then adjusts the speaker's operating power.

[0189] The present application embodiment designs two typical embodiments based on the functional domain architecture and the regional architecture. The low-voltage energy management method in the present application embodiment has more precise control, stronger feasibility and applicability, and can better solve problems such as vehicle failure due to low-voltage power loss and failure of important functions caused by insufficient power supply capacity of the low-voltage system, thereby improving vehicle operation safety and user experience.

[0190] Based on the low-voltage energy management method provided in the above embodiment, the present application also provides a specific implementation of a low-voltage energy management device. Please refer to the following embodiments.

[0191] like Figure 9 As shown, the low-voltage energy management device 900 provided in the embodiment of the present application includes the following modules:

[0192] An acquisition module 910 is configured to acquire the remaining available power of the low-voltage power supply system under the target operating condition, and a first dynamic adjustment order and a second dynamic adjustment order of multiple functions in the low-voltage power supply system under the target operating condition.

[0193] The first adjustment module 920 is configured to adjust the power of the multiple functions in sequence according to a first dynamic adjustment order when the remaining available power is less than a first preset threshold, until the remaining available power is greater than a second preset threshold, or the power of the multiple functions is adjusted, wherein the power of each function is adjusted no more than once, and the second preset threshold is greater than the first preset threshold.

[0194] The second adjustment module 930 is used to adjust the switch states of multiple functions in sequence according to the second dynamic adjustment order when the power of multiple functions has been adjusted and the remaining available power is not greater than the second preset threshold, or the switch states of multiple functions have been adjusted.

[0195] The following is a detailed description of the low-voltage energy management device 900, as shown below:

[0196] In some embodiments, the acquisition module 910 may include:

[0197] The first acquisition submodule is used to obtain the initial adjustment order of multiple functions under the target working condition,

[0198] The second acquisition submodule is used to acquire the switch states corresponding to the multiple functions in the initial adjustment sequence.

[0199] The first deletion submodule is configured to delete the functions whose switch states are off from the initial adjustment order to obtain a second dynamic adjustment order.

[0200] In some embodiments, the acquisition module 910 may further include:

[0201] The third acquisition submodule is configured to acquire the power corresponding to the plurality of functions in the second dynamic adjustment order and the first dynamic adjustment limit power.

[0202] A determination submodule is used to determine the relationship between the power and the first dynamically adjusted limited power for each function,

[0203] The second deletion submodule is configured to delete functions whose power is not greater than the first dynamic adjustment limit power from the second dynamic adjustment order to obtain the first dynamic adjustment order.

[0204] In some embodiments, the following may also be included:

[0205] The first detection submodule is used to detect the remaining available power according to a preset period,

[0206] The second detection submodule is configured to detect the working status of multiple functions when the change in the remaining available power is greater than a third preset threshold, where the working status includes at least one of power and switch status.

[0207] The updating submodule is used to update the first dynamic adjustment order and the second dynamic adjustment order according to the working status.

[0208] In some embodiments, the updating submodule may include:

[0209] The first deleting unit is configured to delete the first function from the second dynamic adjustment order when the switch state of the first function changes from the on state to the off state, thereby obtaining an updated second dynamic adjustment order, wherein the first function is any one of the multiple functions.

[0210] The second deleting unit is configured to delete the first function from the first dynamic adjustment order when the first dynamic adjustment order includes the first function, so as to obtain an updated first dynamic adjustment order.

[0211] In some embodiments, the updating submodule may further include:

[0212] The first adding unit is configured to add the second function to the second dynamic adjustment order according to the priorities corresponding to the multiple functions in the initial adjustment order when the working state of the second function changes from the off state to the on state, so as to obtain an updated second dynamic adjustment order, wherein the second function is any one of the multiple functions.

[0213] The second adding unit is used to add the second function to the first dynamic adjustment order according to the priorities corresponding to multiple functions in the updated second dynamic adjustment order when the power of the second function is greater than the first dynamic adjustment limit power, so as to obtain an updated first dynamic adjustment order.

[0214] In some embodiments, the updating submodule may further include:

[0215] The third adding unit is used to add the third function to the first dynamic adjustment order according to the priorities corresponding to multiple functions in the second dynamic adjustment order when the power of the third function changes and the changed power is greater than the first dynamic adjustment limit power, so as to obtain an updated first dynamic adjustment order, where the third function is any one of the multiple functions.

[0216] In some embodiments, the acquisition module 910 may further include:

[0217] The fourth acquisition submodule is used to obtain the available power of the low-voltage power supply system, the rated power consumption of multiple functions under the target working conditions, the actual power consumption of multiple functions under the target working conditions, and the safety reserved power.

[0218] The calculation submodule is used to calculate the remaining available power of the low-voltage power supply system under the target operating conditions according to the following formula:

[0219] P eavl =P e -P bas -P load -P safe ,

[0220] Among them, P eavl is the remaining available power of the low-voltage power supply system under the target working conditions, P e is the available power of the low voltage power supply system, P bas is the rated power consumption of multiple functions under target working conditions, P load is the actual power consumption of multiple functions under target working conditions, P safe Reserve power for safety.

[0221] In some embodiments, the fourth acquisition submodule may include:

[0222] The acquisition unit is used to obtain the available power of the low-voltage battery, the available power of the DC converter, the calibrated power of the low-voltage battery, the rated power of the DC converter, the health impact coefficient of the low-voltage battery, the temperature impact coefficient of the low-voltage battery, and the fault level impact coefficient of the DC converter.

[0223] The calculation unit is used to calculate the available power of the low-voltage power supply system according to the following formula:

[0224] P e =P bat +P DCDC ,

[0225] P bat =P SOC *η SOH *η Tem ,

[0226] P DCDC =P DCDCrat *η fault ,

[0227] Among them, P e is the available power of the low voltage power supply system, P bat is the available power of the low-voltage battery, P DCDC is the available power of the DC converter, P SOC is the rated power of the low-voltage battery, P DCDCratis the rated power of the DC converter, η SOH is the health impact coefficient of the low-voltage battery, η Tem is the temperature influence coefficient of the low-voltage battery, η fault is the fault level influence coefficient of the DC converter.

[0228] The low-voltage energy management device of the embodiment of the present application can manage functions according to the actual working condition of the vehicle and the remaining available power by adjusting the power of multiple functions in the low-voltage power supply system in sequence according to a first dynamic adjustment order corresponding to the target working condition when the remaining available power corresponding to the target working condition is less than a first preset threshold value, and can meet the actual needs of users by adjusting the switch state of multiple functions in sequence according to a second dynamic adjustment order corresponding to the target working condition when the power of multiple functions has been adjusted and the remaining available power is not greater than a second preset threshold value. That is, through a two-stage adjustment mechanism of first adjusting the power of the function and then adjusting the switch state of the function, it is possible to avoid user discomfort caused by sudden changes in the state of the function and improve the user experience.

[0229] Based on the low-voltage energy management method provided in the above embodiment, the embodiment of the present application also provides a specific implementation of the electronic device. Figure 10 A schematic diagram of an electronic device 1000 provided in an embodiment of the present application is shown.

[0230] The electronic device 1000 may include a processor 1010 and a memory 1020 storing computer program instructions.

[0231] Specifically, the processor 1010 may include a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0232] The memory 1020 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 1020 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 1020 may include removable or non-removable (or fixed) media. Where appropriate, the memory 1020 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 1020 is a non-volatile solid-state memory.

[0233] The memory may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, generally, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to the first aspect of the present application.

[0234] The processor 1010 implements any one of the low-voltage energy management methods in the above embodiments by reading and executing computer program instructions stored in the memory 1020 .

[0235] In one example, the electronic device 1000 may further include a communication interface 1030 and a bus 1040. Figure 10 As shown, the processor 1010, the memory 1020, and the communication interface 1030 are connected via a bus 1040 and communicate with each other.

[0236] The communication interface 1030 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0237] Bus 1040 includes hardware, software or both, couples the parts of electronic equipment to each other.For example, and not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industry standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industry standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 1040 may include one or more buses. Although the present application embodiment describes and shows specific bus, the application considers any suitable bus or interconnection.

[0238] Illustratively, the electronic device 1000 may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA).

[0239] The electronic device can execute the low voltage energy management method in the embodiment of the present application, thereby realizing the combination Figures 2 to 9 Described are low-voltage energy management methods and apparatus.

[0240] In addition, in conjunction with the low-voltage energy management method in the above embodiments, the present application can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions, which, when executed by a processor, implement any of the low-voltage energy management methods in the above embodiments.

[0241] It should be understood that the present application is not limited to the specific configurations and processes described above and illustrated in the figures. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and illustrated as examples. However, the method process of the present application is not limited to the specific steps described and illustrated. Those skilled in the art can make various changes, modifications, and additions, or change the order of the steps after understanding the spirit of the present application.

[0242] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium that can store or transmit information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0243] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps. In other words, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0244] Aspects of the present application have been described above with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed via the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. This processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit. It is also understood that each box in the block diagram and / or the flowchart and the combination of the boxes in the block diagram and / or the flowchart can also be implemented by the dedicated hardware that performs the specified function or action, or can be implemented by the combination of dedicated hardware and computer instructions.

[0245] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. A vehicle low-voltage energy management method, characterized in that: include: Obtaining the remaining available power of the low-voltage power supply system under the target operating condition, and a first dynamic adjustment order and a second dynamic adjustment order of multiple functions in the low-voltage power supply system under the target operating condition, wherein the first dynamic adjustment order is an adjustment order for power adjustment of the multiple functions, and the second dynamic adjustment order is an adjustment order for switching state adjustment of the multiple functions, When the remaining available power is less than the first preset threshold, the power of the multiple functions is adjusted in sequence according to the first dynamic adjustment order until the remaining available power is greater than the second preset threshold, or the power of the multiple functions is adjusted, wherein the power of each function is adjusted no more than once, and the second preset threshold is greater than the first preset threshold, When the power of the multiple functions has been adjusted and the remaining available power is not greater than the second preset threshold, the switch states of the multiple functions are adjusted in sequence according to the second dynamic adjustment order until the remaining available power is greater than the second preset threshold, or the switch states of the multiple functions have been adjusted.

2. The vehicle low-voltage energy management method according to claim 1, characterized in that: Acquiring the second dynamic adjustment order includes: Obtaining an initial adjustment order of the multiple functions under the target operating condition, wherein the initial adjustment order is determined by the vehicle manufacturer according to the vehicle operating condition, acquiring the switch states respectively corresponding to the plurality of functions in the initial adjustment sequence, The functions whose switch states are off are deleted from the initial adjustment order to obtain the second dynamic adjustment order.

3. The vehicle low-voltage energy management method according to claim 2, characterized in that: Obtaining the first dynamic adjustment order includes: Obtaining the powers respectively corresponding to the plurality of functions in the second dynamic adjustment order and the first dynamic adjustment limit power, For each of the functions, determining a magnitude relationship between the power and the first dynamically adjusted limited power; The functions whose power is not greater than the first dynamic adjustment limit power are deleted from the second dynamic adjustment order to obtain the first dynamic adjustment order.

4. The vehicle low-voltage energy management method according to claim 1, characterized in that: The method further comprises: Detecting the remaining available power according to a preset period, When the change in the remaining available power is greater than a third preset threshold, detecting the operating states of the multiple functions, the operating states including at least one of the power and the switch state; The first dynamic adjustment order and the second dynamic adjustment order are updated according to the working status.

5. The vehicle low-voltage energy management method according to claim 4, characterized in that: The updating of the first dynamic adjustment order and the second dynamic adjustment order according to the working state includes: When the switch state of the first function changes from the on state to the off state, the first function is deleted from the second dynamic adjustment order to obtain an updated second dynamic adjustment order, wherein the first function is any one of the multiple functions. In a case where the first dynamic adjustment order includes the first function, the first function is deleted from the first dynamic adjustment order to obtain an updated first dynamic adjustment order.

6. The vehicle low-voltage energy management method according to claim 4, characterized in that: The updating of the first dynamic adjustment order and the second dynamic adjustment order according to the working state includes: When the working state of the second function changes from the off state to the on state, the second function is added to the second dynamic adjustment order according to the priorities corresponding to the multiple functions in the initial adjustment order to obtain an updated second dynamic adjustment order, where the second function is any one of the multiple functions. When the power of the second function is greater than the first dynamic adjustment limit power, the second function is added to the first dynamic adjustment order according to the priorities corresponding to the multiple functions in the updated second dynamic adjustment order to obtain the updated first dynamic adjustment order.

7. The vehicle low-voltage energy management method according to claim 4, characterized in that: The updating of the first dynamic adjustment order and the second dynamic adjustment order according to the working state includes: When the power of the third function changes and the changed power is greater than the first dynamic adjustment limit power, the third function is added to the first dynamic adjustment order according to the priorities corresponding to the multiple functions in the second dynamic adjustment order to obtain an updated first dynamic adjustment order, and the third function is any one of the multiple functions.

8. The vehicle low-voltage energy management method according to claim 1, characterized in that: The obtaining of the remaining available power of the low-voltage power supply system under the target operating condition includes: Obtaining the available power of the low-voltage power supply system, the rated power consumption of the multiple functions under the target operating conditions, the actual power consumption of the multiple functions under the target operating conditions, and the safety reserved power, The remaining available power of the low-voltage power supply system under the target operating conditions is calculated according to the following formula: P eavl =P e -P bas -P load -P safe , Among them, P eavl is the remaining available power of the low-voltage power supply system under the target operating conditions, P e is the available power of the low voltage power supply system, P bas is the rated power consumption of the multiple functions under the target operating conditions, P load is the actual power consumption of the multiple functions under the target working condition, P safe Power is reserved for the safety.

9. The vehicle low-voltage energy management method according to claim 8, characterized in that: The obtaining of the available power of the low-voltage power supply system includes: Obtain the available power of the low-voltage battery, the available power of the DC converter, the rated power of the low-voltage battery, the rated power of the DC converter, the health impact coefficient of the low-voltage battery, the temperature impact coefficient of the low-voltage battery, and the fault level impact coefficient of the DC converter, The available power of the low-voltage power supply system is calculated according to the following formula: P e =P bat +P DCDC , P bat =P SOC *or SOH *or Tem , P.S DCDC JP DCDCrat *η fault , Among them, P e is the available power of the low voltage power supply system, P bat is the available power of the low-voltage battery, P DCDC is the available power of the DC converter, P SOC is the rated power of the low-voltage battery, P DCDCrat is the rated power of the DC converter, η SOH is the health impact coefficient of the low-voltage battery, η Tem is the temperature influence coefficient of the low-voltage battery, η fault is the fault level influence coefficient of the DC converter.

10. A vehicle low-voltage energy management device, characterized in that: The device comprises: An acquisition module is configured to acquire the remaining available power of the low-voltage power supply system under a target operating condition, and a first dynamic adjustment order and a second dynamic adjustment order of multiple functions in the low-voltage power supply system under the target operating condition, wherein the first dynamic adjustment order is an adjustment order for power adjustment of the multiple functions, and the second dynamic adjustment order is an adjustment order for switching state adjustment of the multiple functions. a first adjustment module, configured to, when the remaining available power is less than a first preset threshold, sequentially adjust the power of the multiple functions according to the first dynamic adjustment order until the remaining available power is greater than a second preset threshold, or the power of the multiple functions is adjusted, wherein the power of each function is adjusted no more than once, and the second preset threshold is greater than the first preset threshold, The second adjustment module is used to adjust the switch states of the multiple functions in sequence according to the second dynamic adjustment order when the power of the multiple functions has been adjusted and the remaining available power is not greater than the second preset threshold, or the switch states of the multiple functions have been adjusted.

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