Power management method, device, power system and mechanical equipment

Abstract

The present application proposes a power management method, device, power system and mechanical equipment, which can determine the working parameters of at least two power supplies in the power system under working conditions. Based on the working parameters, the service life of at least two power supplies under working conditions is predicted. Comparing the service life and design life of at least two power supplies, if among the at least two power supplies, there is a first-class target power supply whose service life is less than the design life of the first-class target power supply, and there is a second-class target power supply whose service life is greater than the service life of the second-class target power supply, then the working current of the first-class target power supply is reduced and the working current of the second-class target power supply is increased. Among them, reducing the working current of the first-class target power supply can extend the service life of the first-class target power supply, and increasing the working current of the second-class target power supply can shorten the service life of the second-class target power supply, thereby achieving the purpose of the service life of the first-class target power supply and the second-class target power supply meeting the design life.

Description

Technical Field

[0001] The present application relates to the technical field of power supply life management, and in particular to a power supply management method, apparatus, power supply system and mechanical equipment. Background Art

[0002] Currently, an increasing number of mechanical devices are powered by power batteries, such as construction vehicles and heavy trucks. To meet operational needs, some devices are equipped with multiple power supplies. However, balancing the output currents of these power supplies and ensuring their service life meets their design lifespans is a pressing technical challenge facing those skilled in the art. Summary of the Invention

[0003] In view of this, the present application proposes a power management method, device, power system and mechanical equipment, which can balance the output current of multiple power supplies and ensure that the service life of multiple power supplies meets the designed life.

[0004] The technical solutions proposed in this application are as follows:

[0005] In a first aspect, the present application provides a power management method, which is applied to a power system including multiple power supplies, the method comprising:

[0006] Determining operating parameters of at least two power supplies in the power supply system in an operating state; the operating parameters include at least one of an operating current, an operating voltage, and an operating power;

[0007] Based on the operating parameters, predicting the service life of the at least two power supplies in an operating state;

[0008] If, among the at least two power supplies, there is a first type target power supply whose service life is less than the design life, and there is a second type target power supply whose service life is greater than the design life, then the operating current of the first type target power supply is reduced and the operating current of the second type target power supply is increased so that the service life of the first type target power supply and the second type target power supply are the same as their respective design lives.

[0009] Furthermore, in the method described above, determining the operating parameters of at least two power supplies in the power supply system in the working state includes:

[0010] The operating state of the power supply system is simulated to determine the operating parameters of the at least two power supplies.

[0011] Furthermore, in the method described above, the power supply system includes a first power supply and a second power supply;

[0012] The first power supply is an energy type power supply, and the second power supply is a power type power supply.

[0013] Furthermore, in the method described above, if the operating parameter includes an operating current, then determining the operating parameters of at least two power supplies in the power supply system in the operating state includes:

[0014] Obtaining a system operating current of the power supply system in a working state;

[0015] An equivalent current of the system operating current is determined to be the operating current of the first power supply, and a difference between the system operating current and the equivalent current is determined to be the operating current of the second power supply.

[0016] Furthermore, in the method described above, the power supply system further includes a power conversion module electrically connected to the first-category target power supply and / or the second-category target power supply, and the reducing the operating current of the first-category target power supply and increasing the operating current of the second-category target power supply includes:

[0017] The power conversion module is controlled to reduce the output power ratio of the first target power source and / or increase the output power ratio of the second target power source, so as to reduce the operating current of the first target power source and increase the operating current of the second target power source.

[0018] Furthermore, in the method described above, if the first-category target power supply exists and the second-category target power supply does not exist among the at least two power supplies, increasing the output voltage of the first-category target power supply and / or increasing the capacitance of the first-category target power supply;

[0019] If the second-category target power source exists and the first-category target power source does not exist among the at least two power sources, the output voltage of the second-category target power source is reduced, and / or the capacitance of the second-category target power source is reduced.

[0020] In a second aspect, the present application provides a power management device, which is applied to a power system including multiple power supplies, and the device includes:

[0021] a determination module, configured to determine operating parameters of at least two power supplies in the power supply system in an operating state; the operating parameters comprising at least one of an operating current, an operating voltage, and an operating power;

[0022] a prediction module, configured to predict the service life of the at least two power supplies in an operating state based on the operating parameters;

[0023] An adjustment module is configured to reduce the operating current of a first-category target power supply whose service life is less than the design life and increase the operating current of the second-category target power supply if, among the at least two power supplies, there is a first-category target power supply whose service life is less than the design life and there is a second-category target power supply whose service life is greater than the design life, so that the service life of the first-category target power supply and the second-category target power supply are the same as their respective design life.

[0024] In a third aspect, the present application provides a power supply system, comprising at least two power supplies, and an electronic device;

[0025] The electronic device is electrically connected to the at least two power sources, and the electronic device is configured to execute any one of the above methods.

[0026] The power supply system in the above embodiment further includes a power conversion module; the at least two power supplies include a first power supply and a second power supply;

[0027] The power conversion module is electrically connected to the first power source and / or the second power source; the power conversion module is also electrically connected to the electronic device;

[0028] The first power supply is an energy type power supply, and the second power supply is a power type power supply.

[0029] In a fourth aspect, the present application provides a mechanical device comprising the power supply system described in any one of the above items.

[0030] The power management method proposed in the present application can determine the operating parameters of at least two power supplies in the power supply system under working conditions, and the operating parameters include at least one of the operating current, operating voltage and operating power. Based on the operating parameters, the service life of at least two power supplies under working conditions is predicted. Comparing the service life and design life of at least two power supplies, if, among the at least two power supplies, there is a first-class target power supply whose service life is less than the design life of the first-class target power supply, and there is a second-class target power supply whose service life is greater than the service life of the second-class target power supply, then the operating current of the first-class target power supply is reduced, and the operating current of the second-class target power supply is increased. Among them, reducing the operating current of the first-class target power supply can extend the service life of the first-class target power supply, and increasing the operating current of the second-class target power supply can shorten the service life of the second-class target power supply, thereby achieving the purpose of the service life of the first-class target power supply and the second-class target power supply meeting the design life. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0032] Figure 1 This is a flow chart of a power management method provided in an embodiment of the present application;

[0033] Figure 2 This is a flow chart of another power management method provided in an embodiment of the present application;

[0034] Figure 3 This is a schematic diagram of the structure of a power management device provided in an embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of the structure of a power supply system provided in an embodiment of the present application;

[0036] Figure 5 This is a structural diagram of another power supply system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] At present, more and more mechanical equipment uses power batteries as a power source. For example, there are more and more vehicles, including cars, engineering vehicles, heavy trucks and other models, that use power batteries as a power source. In order to meet the working needs of mechanical equipment, such as to extend working hours and improve work efficiency, some mechanical equipment will be equipped with multiple power supplies to form a multi-power system, where each power supply is a power battery pack. However, the current power life prediction and management methods are mainly aimed at conventional single-power systems. In the case of more complex multi-power systems, the life prediction and management methods in the existing technology cannot be applied to multi-power systems, resulting in the actual service life of the multi-power system not being consistent with the designed life.

[0038] Based on this, the present application proposes a power management method, device, power system and mechanical equipment. This technical solution can adjust the output current of each power supply, thereby ensuring that the service life of multiple power supplies meets the designed life.

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] The present application provides a power management method, which can be executed by an electronic device. The electronic device can be any device with data and instruction processing functions, such as a computer, a smart terminal, a server, etc. Figure 1 As shown, the method includes:

[0041] S101: Determine operating parameters of at least two power supplies in a power supply system in an operating state.

[0042] Specifically, the power management method of the embodiment of the present application is applied to a power supply system including multiple power supplies, so as to facilitate the prediction and management of the power supply life for a power supply system including at least two power supplies. Furthermore, the power supply system of this embodiment is applied to mechanical equipment to provide power energy for the mechanical equipment. Based on the actual working requirements of the mechanical equipment, such as cruising range, power requirements, cost constraints, etc., at least two power supplies that meet the requirements in terms of power size, power level, battery cells, and system specifications can be preliminarily selected to form a power supply system.

[0043] Then, operating parameters of at least two power supplies in the power supply system in the operating state are determined.

[0044] The aforementioned operating state refers to the operating state of the power supply system when the mechanical equipment is in operation. Specifically, a simulation experiment can be conducted to simulate the actual operating state of the power supply system under the mechanical equipment's operating conditions and determine the operating parameters of at least two power supplies under the operating conditions. Alternatively, a real-world operation experiment can be designed to measure the operating parameters of at least two power supplies under the mechanical equipment's operating conditions.

[0045] Among them, the number of power supplies in the power supply system can be two, three, four or even more, which is not limited in this embodiment. In this embodiment, at least two power supplies refer to the power supplies in the power supply system that need to be predicted and managed for life, which can be set by the user according to actual conditions. It can be any two, three or more power supplies in the power supply system, or it can be all the power supplies in the power supply system, which is not limited in this embodiment. For example, if the power supply system only includes two power supplies, namely power supply A and power supply B, then the working parameters of power supply A and power supply B can be determined in the working state; another example, if the power supply system only includes three power supplies, namely power supply A, power supply B and power supply C, and power supply A, power supply B and power supply C all need to be predicted and managed for life, then the working parameters of power supply A, power supply B and power supply C can be determined in the working state; another example, if the power supply system only includes three power supplies, namely power supply A, power supply B and power supply C, and power supply A does not need to be predicted and managed for life, then the working parameters of power supply B and power supply C can be determined in the working state.

[0046] In this embodiment, for the convenience of description and understanding, in the following embodiments, at least two power supplies in the power supply system that require life prediction and management are defined as management power supplies.

[0047] The operating parameters include at least one of an operating current, an operating voltage, and an operating power. Specifically, in the embodiment of the present application, it is determined that in the operating state, at least one of the operating current, the operating voltage, and the operating power of the management power supply is controlled.

[0048] S102: Predicting the service life of at least two power supplies in a working state based on the operating parameters.

[0049] As described in the above embodiments, for ease of description and understanding, the at least two power supplies in the power supply system requiring lifespan prediction and management are defined as managed power supplies. In this embodiment, after obtaining the operating parameters of the managed power supplies, the service life of the managed power supplies in the operating state can be predicted based on the operating parameters of the managed power supplies.

[0050] In some embodiments, the service life of the managed power supply in a working state can be predicted based on at least one of the working current, working voltage, and working power of the managed power supply. For example, the equivalent charge and discharge rate of the managed power supply cell can be analyzed based on parameters such as the working current, working voltage, and working power of the managed power supply. Based on this rate, a simplified charge and discharge experiment is performed to determine the service life of the managed power supply. It should be noted that the estimation process of the service life of the managed power supply is a mature existing technology, and those skilled in the art can refer to the records in the existing technology, and this embodiment does not limit it.

[0051] S103. Detect whether there is a first-category target power supply whose service life is less than the design life, and whether there is a second-category target power supply whose service life is greater than the design life among at least two power supplies; if there are the first-category target power supply and the second-category target power supply, execute step S104; if there are no first-category target power supply and / or the second-category target power supply, terminate the execution.

[0052] In some embodiments, both the service life and the design life are defined time periods. For example, the service life is X1 years and the design life is X2 years. If calculations determine that X1 is less than X2, the service life is less than the design life. If calculations determine that X1 is greater than X2, the service life is greater than the design life. If calculations determine that X1 is equal to X2, the service life is equal to the design life.

[0053] In some other embodiments, the service life and the design life are both clear time periods. For example, the service life is X1 years and the design life is X2 years. If, through calculation, it is determined that X1 is less than X2, and the difference between X2 and X1 is greater than or equal to the set value, it means that the service life is less than the design life; if, through calculation, it is determined that X1 is greater than X2, and the difference between X1 and X2 is greater than or equal to the set value, it means that the service life is greater than the design life; if, through calculation, it is determined that X1 is equal to X2, or, it is determined that X1 is less than X2 and the difference between X2 and X1 is less than the set value, or, it is determined that X1 is greater than X2 and the difference between X1 and X2 is less than the set value, it means that the service life is equal to the design life. The set value can be set according to actual conditions and is not limited in this embodiment.

[0054] In some embodiments, both the service life and the design life can be life ranges. For example, the service life is X3-X4 years, and the design life is X5-X6 years. If the upper limit of the service life range is determined to be less than the lower limit of the design life range through calculation, that is, X4 is less than X5, then the service life is less than the design life. If the lower limit of the service life range is determined to be greater than the upper limit of the design life range through calculation, that is, X3 is greater than X6, then the service life is greater than the design life. If the service life range and the design life range intersect, then the service life is equal to the design life.

[0055] It should be noted that whether the service life is greater than the design life or less than the design life, it means that the service life does not meet the design life. Only when the service life is equal to the design life, the service life meets the design life.

[0056] In an embodiment of the present application, it is determined whether there is a first type of target power supply whose service life is less than the design life, and a second type of target power supply whose service life is greater than the design life in the managed power supply. It should be noted that, in general, the design life of the first type of target power supply and the second type of target power supply are not the same. That is to say, in an embodiment of the present application, it is determined whether there is a first type of target power supply in the managed power supply, and the service life of the first type of target power supply is less than the design life of the first type of target power supply, and it is determined whether there is a second type of target power supply in the managed power supply, and the service life of the second type of target power supply is greater than the design life of the second type of target power supply.

[0057] If it is determined that the first target power source and the second target power source are present in the managed power source, step S104 may be executed to adjust the operating currents of the first target power source and the second target power source. If it is determined that the first target power source and the second target power source are not present in the managed power source, the execution may be terminated.

[0058] If it is determined that the first type of target power supply and the second type of target power supply do not exist in the managed power supply, the following situations can be considered:

[0059] First, the service life of the managed power supplies is longer than their respective design lifespans;

[0060] Second, the service life of the management power supplies is shorter than their respective design lifespans;

[0061] Third, the service life of at least one managed power supply meets the design service life, and the service life of at least one managed power supply is greater than or less than the design service life;

[0062] Fourth, the service life of all managed power supplies is equal to their respective design life.

[0063] If the managed power supply meets the first, second, or third conditions above, it indicates that there are certain problems with the initial selection of the power supply system, and the service life cannot be adjusted by adjusting the operating current of the managed power supply. Execution can be terminated. If the managed power supply meets the fourth condition above, it indicates that the service life of each managed power supply meets the design life, and no operating current adjustment is required. Execution can also be terminated.

[0064] It should be noted that the number of the first type of target power supplies determined from the managed power supplies may be one or more, and the number of the second type of target power supplies determined from the managed power supplies may also be one or more, which is not limited in this embodiment.

[0065] S104 : Reduce the operating current of the first type target power supply and increase the operating current of the second type target power supply, so that the service life of the first type target power supply and the second type target power supply are the same as their respective designed service life.

[0066] The battery life is directly related to the current. As the current increases, the battery life decreases; as the current decreases, the battery life increases.

[0067] Based on this, in this embodiment, if it is determined that there are a first type of target power supply and a second type of target power supply among at least two power supplies, the operating current of the first type of target power supply can be reduced to extend the service life of the first type of target power supply to a certain extent, and at the same time, the operating current of the second type of target power supply can be increased to shorten the service life of the second type of target power supply to a certain extent, so that the service life of the first type of target power supply and the second type of target power supply are the same as their respective design life.

[0068] At the same time, the operating current of the first type of target power supply decreases, the operating current of the second type of target power supply increases, and the total current value output by the management power supply remains unchanged, which will not affect the normal operation of the mechanical equipment.

[0069] In the above embodiments, the operating parameters of at least two power supplies in the power supply system can be determined in the working state, and the operating parameters include at least one of the operating current, the operating voltage and the operating power. Based on the operating parameters, the service life of at least two power supplies in the working state is predicted. The service life and the design life of at least two power supplies are compared. If, among the at least two power supplies, there is a first-class target power supply whose service life is less than the design life of the first-class target power supply, and there is a second-class target power supply whose service life is greater than the service life of the second-class target power supply, then the operating current of the first-class target power supply is reduced, and the operating current of the second-class target power supply is increased. Among them, reducing the operating current of the first-class target power supply can extend the service life of the first-class target power supply, and increasing the operating current of the second-class target power supply can shorten the service life of the second-class target power supply, thereby achieving the purpose of the service life of the first-class target power supply and the second-class target power supply meeting the design life.

[0070] As an optional implementation, another embodiment of the present application discloses that the steps of the above embodiment for determining the operating parameters of at least two power supplies in the power supply system in the working state may specifically include the following steps:

[0071] The operating state of the power supply system is simulated to determine the operating parameters of at least two power supplies.

[0072] In this embodiment, simulation software can be used to simulate the actual operating state of the power supply system under the operating conditions of the mechanical equipment, thereby determining the operating parameters of the at least two power supplies under the operating conditions. In addition to using simulation, a real operating experiment can also be designed to install the power supply system on a real mechanical equipment, or install the power supply system on a substitute device with the same functions as the mechanical equipment, and measure the operating parameters of the at least two power supplies while the mechanical equipment or the substitute device is in the operating state.

[0073] In the above embodiments, by setting up a simulation experiment, the operating parameters of at least two power supplies that require life prediction and management can be quickly obtained without the need for field measurement, which is more convenient.

[0074] As an optional implementation, disclosed in another embodiment of the present application, the power supply system of the above embodiment includes a first power supply and a second power supply; wherein the first power supply is an energy-type power supply and the second power supply is a power-type power supply.

[0075] In this embodiment, the power supply system includes a first power supply and a second power supply. The first power supply is an energy-type power supply, and the second power supply is a power-type power supply. Energy-type power supplies are characterized by high energy density and are primarily used for high energy output; power-type batteries are characterized by high power density and are primarily used for instantaneous high power output.

[0076] Compared to current single-power supply systems, the use of two power supplies can reduce the amount of power required from a single power supply. Furthermore, it is well known that higher-capacity power supplies have higher costs. This embodiment uses two lower-capacity power supplies instead of one higher-capacity power supply, thereby reducing power supply costs.

[0077] Furthermore, in this embodiment, the first power supply is an energy-type power supply, capable of providing continuous power and serving as the primary energy source for the mechanical equipment. The second power supply is a power-type power supply, serving as an auxiliary energy source. The second power supply can provide basic power-on functionality when the mechanical equipment is not in operation, such as meeting requirements for moving vehicles within the factory. When the mechanical equipment is in operation, the second power supply can provide pulsed peak power, improving the mechanical equipment's dynamics while reducing the performance requirements for the first power supply, further reducing power supply costs.

[0078] As an optional implementation, another embodiment of the present application discloses that if the operating parameters in the steps of the above embodiment include an operating current, determining the operating parameters of at least two power supplies in the power supply system in the working state may specifically include the following steps:

[0079] Obtaining a system operating current of the power supply system in a working state; determining an equivalent current of the system operating current as the operating current of the first power supply; and determining a difference between the system operating current and the equivalent current as the operating current of the second power supply.

[0080] If the power supply system includes a first power supply and a second power supply, the first power supply is an energy-type power supply, the second power supply is a power-type power supply, and the operating parameters include an operating current, the operating parameters of the first power supply and the second power supply in the operating state can be determined as follows:

[0081] Specifically, whether by setting up a simulation experiment or setting up a real operation experiment, the system operating current of the power supply system in the working state, that is, the total current spectrum of the bus working condition of the power supply system, can be detected.

[0082] Since the first power supply is used to provide a continuous operating current, the equivalent current of the system operating current can be calculated and determined as the operating current of the first power supply. Since the second power supply is used to provide an instantaneous peak pulse current, the difference between the system operating current and the equivalent current can be calculated and determined as the operating current of the second power supply.

[0083] Exemplarily, the root mean square of the system operating current may be calculated to obtain the equivalent current of the system operating current.

[0084] In the above embodiments, the operating currents of the first power supply and the second power supply can be determined quickly and accurately by calculating the equivalent current.

[0085] As an optional implementation, another embodiment of the present application discloses that the steps in the above embodiment reduce the operating current of the first type of target power supply and increase the operating current of the second type of target power supply, which may specifically include the following steps:

[0086] The power conversion module is controlled to reduce the output power ratio of the first type of target power source and / or increase the output power ratio of the second type of target power source, thereby reducing the operating current of the first type of target power source and increasing the operating current of the second type of target power source. The power conversion module can also be connected to other power sources in the power supply system, which is not limited in this embodiment.

[0087] Specifically, the power supply system in the above embodiment further includes a power conversion module. The power conversion module is electrically connected to the first type of target power supply and / or the second type of target power supply. The power conversion module may also be connected to other power supplies in the power supply system, which is not limited in this embodiment.

[0088] If the power conversion module is electrically connected to the first type of target power supply, the power conversion module can be controlled to reduce the output power ratio of the first type of target power supply, thereby reducing the operating current of the first type of target power supply. When the operating current of the first type of target power supply is reduced and the power consumption of the mechanical equipment remains constant, the operating current of the second type of target power supply can be increased.

[0089] If the power conversion module is electrically connected to the second type of target power supply, the power conversion module can be controlled to increase the output power ratio of the second type of target power supply, thereby increasing the operating current of the first type of target power supply. When the operating current of the second type of target power supply increases and the power consumption of the mechanical equipment remains constant, the operating current of the first type of target power supply can be reduced.

[0090] If the power conversion module is electrically connected to the first type of target power supply and the second type of target power supply respectively, the output power ratio of the first type of target power supply and the second type of target power supply can also be adjusted simultaneously, that is, the power conversion module is controlled to reduce the output power ratio of the first type of target power supply, and increase the output power ratio of the second type of target power supply, so as to reduce the operating current of the first type of target power supply and increase the operating current of the second type of target power supply.

[0091] In the above embodiments, the operating current of the first type of target power source can be reduced and the operating current of the second type of target power source can be increased by adjusting the output power ratio of the first type of target power source and / or the second type of target power source.

[0092] As an optional implementation, such as Figure 2 As shown, in another embodiment of the present application, after predicting the service life of at least two power supplies in a working state based on the operating parameters in the above embodiment steps, the following steps may be further included:

[0093] S201. Detect whether there is a first-category target power supply and no second-category target power supply among at least two power supplies; if there is a first-category target power supply and no second-category target power supply, execute step S202; if there is a second-category target power supply and no first-category target power supply, execute step S203.

[0094] Furthermore, in the steps of the above embodiments, if it is detected that there is no first-category target power supply and / or no second-category target power supply among at least two power supplies, in addition to ending the execution according to the steps of the above embodiments, it is also possible to further detect whether there is a first-category target power supply and no second-category target power supply among at least two power supplies, and based on the detection result, adjust the first-category target power supply or the second-category target power supply.

[0095] Specifically, if it is detected that among at least two power supplies, there is a first type target power supply and no second type target power supply, step S202 can be executed; if it is detected that among at least two power supplies, there is a second type target power supply and no first type target power supply, step S203 is executed.

[0096] S202: Increase the output voltage of the first-type target power supply, and / or increase the capacitance of the first-type target power supply.

[0097] Specifically, if it is detected that among at least two power supplies, a first-category target power supply exists and a second-category target power supply does not exist, the following two situations may occur:

[0098] First, the service life of the management power supplies is shorter than their respective design life;

[0099] Second, the service life of at least one managed power supply meets the designed service life, and the service life of at least one managed power supply is less than the designed service life.

[0100] Based on the above situation, you can reselect the first target power supply in the power supply system and choose a power supply with higher output voltage and / or greater capacity to extend the service life of the power supply. Specifically, if the battery cell specifications remain unchanged, you can increase the number of power supplies in series and parallel to increase voltage and capacity.

[0101] After reselection, if Figure 2 As shown, step S101 may be continued to adjust the life of the management power supply.

[0102] S203 : Reduce the output voltage of the second-category target power source, and / or reduce the capacitance of the second-category target power source.

[0103] Specifically, if it is detected that among at least two power supplies, a first-category target power supply exists and a second-category target power supply does not exist, the following two situations may occur:

[0104] First, the service life of the managed power supplies is longer than their respective design lifespans;

[0105] Second, the service life of at least one managed power supply meets the design service life, and the service life of at least one managed power supply exceeds the design service life.

[0106] Based on the above situation, you can reselect the second target power supply in the power supply system and choose a power supply with a lower output voltage and / or a smaller capacity to shorten the service life of the power supply. Specifically, if the battery cell specifications remain unchanged, you can reduce the number of series and parallel power supplies to reduce voltage and power.

[0107] After reselection, if Figure 2 As shown, step S101 may be continued to adjust the life of the management power supply.

[0108] In addition, if the first type of target power supply and the second type of target power supply do not exist in the managed power supply, it means that the service life of all managed power supplies is equal to their respective design life, and no adjustment is required.

[0109] In the above embodiments, when the service life of at least two power supplies is less than the design life or the service life of at least two power supplies is greater than the design life, the power supplies can be reselected so that the service life of the management power supply meets the design life.

[0110] Corresponding to the above power management method, the present application also discloses a power management device, see Figure 3 As shown, the device includes:

[0111] The determining module 110 is configured to determine operating parameters of at least two power supplies in the power supply system in an operating state; the operating parameters include at least one of an operating current, an operating voltage, and an operating power;

[0112] A prediction module 120, configured to predict the service life of at least two power supplies in an operating state based on the operating parameters;

[0113] The adjustment module 130 is used to reduce the operating current of the first-category target power supply and increase the operating current of the second-category target power supply when, among the at least two power supplies, there is a first-category target power supply whose service life is less than the design life, and there is a second-category target power supply whose service life is greater than the design life, so that the service life of the first-category target power supply and the second-category target power supply are the same as their respective design lives.

[0114] As an optional implementation, another embodiment of the present application discloses that the determination module 110 of the above embodiment, when determining the operating parameters of at least two power supplies in the power supply system in the working state, is specifically configured to:

[0115] The operating state of the power supply system is simulated to determine the operating parameters of at least two power supplies.

[0116] As an optional implementation, disclosed in another embodiment of the present application, the power supply system of the above embodiment includes a first power supply and a second power supply; the first power supply is an energy-type power supply, and the second power supply is a power-type power supply.

[0117] As an optional implementation, another embodiment of the present application discloses that if the operating parameter includes an operating current, the determination module 110 of the above embodiment, when determining the operating parameters of at least two power supplies in the power supply system in the working state, is specifically configured to:

[0118] Obtaining a system operating current of the power supply system in a working state; determining an equivalent current of the system operating current as the operating current of the first power supply; and determining a difference between the system operating current and the equivalent current as the operating current of the second power supply.

[0119] As an optional implementation, another embodiment of the present application discloses that the power supply system further includes a power conversion module electrically connected to the first type target power supply and / or the second type target power supply. The adjustment module 130 of the above embodiment is specifically configured to:

[0120] The power conversion module is controlled to reduce the output power ratio of the first type target power source and / or increase the output power ratio of the second type target power source, so as to reduce the operating current of the first type target power source and increase the operating current of the second type target power source.

[0121] As an optional implementation, another embodiment of the present application discloses that the adjustment module 130 is further configured to increase the output voltage of the first-category target power supply and / or increase the capacitance of the first-category target power supply if the first-category target power supply exists and the second-category target power supply does not exist among the at least two power supplies;

[0122] If the second-category target power source exists and the first-category target power source does not exist among the at least two power sources, the output voltage of the second-category target power source is reduced, and / or the capacitance of the second-category target power source is reduced.

[0123] Specifically, for the specific working contents of each unit of the above-mentioned power management device, please refer to the contents of the above-mentioned method embodiment, which will not be repeated here.

[0124] Another embodiment of the present application also provides a power supply system, see Figure 4 As shown, the power supply system includes: at least two power supplies 300, and the electronic device 310 described in the above embodiments, and the electronic device 310 is electrically connected to the at least two power supplies 300. The electronic device 310 is used to execute the method described in any of the above embodiments.

[0125] like Figure 5 As shown, as an optional implementation, disclosed in another embodiment of the present application, the at least two power supplies 300 of the above embodiment include a first power supply S1 and a second power supply S2, the first power supply S1 is an energy type power supply, and the second power supply S2 is a power type power supply.

[0126] Furthermore, the power supply system further includes a power conversion module 320, which is electrically connected to the first power supply S1 and / or the second power supply S2. In some embodiments, the power conversion module 320 is electrically connected to the second power supply S2, such as Figure 5 shown.

[0127] In some embodiments, such as Figure 5 As shown, the power supply system also includes a power replacement interface 330 and a high-voltage box 340.

[0128] The first power supply S1 is connected to the high-voltage box 340 via the power exchange interface 330. The first power supply S1 can be replaced through the power exchange interface 330 to achieve the purpose of power exchange. The first power supply S1 and the power conversion module 320 are connected to the load device through the high-voltage box 340. The high-voltage box 340 is equipped with a high-voltage busbar, which transmits the current output by the first power supply S1 and the second power supply S2 to the load device.

[0129] In some embodiments, the second power source S2 can be fixed to a mechanical device. If the mechanical device is an engineering vehicle, the second power source S2 can be fixed to the chassis of the engineering vehicle and recharged. In other embodiments, the second power source S2 can also be connected to the battery swap interface 330 (not shown), and the second power source S2 can be replaced through the battery swap interface to achieve the purpose of battery swapping.

[0130] In some embodiments, if the load device is a device driven by three-phase electricity, an all-in-one system 350 can be set between the load device and the high-voltage box 340 to invert the DC current output by the high-voltage bus into three-phase AC power. Figure 5 shown.

[0131] Another embodiment of the present application further provides a mechanical device, which includes the power supply system of the above embodiment, and is electrically connected to a load device of the mechanical device.

[0132] Exemplarily, the mechanical equipment may be an engineering vehicle.

[0133] In addition to the above methods and devices, embodiments of the present application may also be computer program products, which include computer program instructions. When the computer program instructions are executed by the processor 210, the processor 210 executes the various steps of the power management method provided in the above embodiments.

[0134] The computer program product may be written in any combination of one or more programming languages ​​to implement the program code of the embodiments of the present application, including object-oriented programming languages ​​such as Java, C++, and conventional procedural programming languages ​​such as C or similar programming languages. The program code may be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0135] In addition, the embodiment of the present application may also be a computer-readable storage medium having computer program instructions stored thereon. When the computer program instructions are executed by the processor, the processor 210 executes the various steps of the power management method provided in the above embodiment.

[0136] The computer-readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0137] Specifically, the specific working contents of each part of the above-mentioned electronic equipment, power supply system, mechanical equipment, computer program product and storage medium, as well as the specific processing contents of the computer program product or the computer program on the above-mentioned storage medium when being run by the processor, can all be found in the contents of the various embodiments of the above-mentioned power management method and will not be repeated here.

[0138] For the sake of simplicity, the aforementioned method embodiments are described as a series of action combinations. However, those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required for this application.

[0139] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between the various embodiments can be referred to in conjunction with each other. For device embodiments, since they are generally similar to method embodiments, their description is relatively simplified. For relevant parts, refer to the description of the method embodiments.

[0140] The steps in the methods of each embodiment of the present application can be adjusted in sequence, merged, and deleted according to actual needs, and the technical features recorded in each embodiment can be replaced or combined.

[0141] The modules and sub-modules in the devices and terminals in the various embodiments of the present application can be combined, divided, and deleted according to actual needs.

[0142] In the several embodiments provided in this application, it should be understood that the disclosed terminals, devices, and methods can be implemented in other ways. For example, the terminal embodiments described above are merely illustrative. For example, the division of modules or submodules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple submodules or modules can be combined or integrated into another module, 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 an indirect coupling or communication connection through some interface, device or module, which can be electrical, mechanical or other forms.

[0143] The modules or submodules described as separate components may or may not be physically separate, and the components of the modules or submodules may or may not be physical modules or submodules, that is, they may be located in one place or distributed across multiple network modules or submodules. Some or all of the modules or submodules may be selected to achieve the purpose of this embodiment according to actual needs.

[0144] In addition, each functional module or submodule in each embodiment of the present application may be integrated into a processing module, or each module or submodule may exist physically separately, or two or more modules or submodules may be integrated into a single module. The above-mentioned integrated modules or submodules may be implemented in the form of hardware or software functional modules or submodules.

[0145] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0146] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, software units executed by a processor, or a combination of the two. The software units may be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art.

[0147] Finally, 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 variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0148] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power management method, characterized in that: Applied to a power supply system including multiple power supplies, the method includes: Determining operating parameters of at least two power supplies in the power supply system requiring life prediction and management in an operating state; the operating parameters comprising at least one of an operating current, an operating voltage, and an operating power; Based on the operating parameters, predicting the service life of the at least two power supplies in an operating state; If, among the at least two power supplies, there is a first type target power supply whose service life is less than the design life, and there is a second type target power supply whose service life is greater than the design life, then the operating current of the first type target power supply is reduced and the operating current of the second type target power supply is increased so that the service life of the first type target power supply and the second type target power supply are the same as their respective design lives.

2. The method according to claim 1, characterized in that The determining of operating parameters of at least two power supplies in the power supply system in the working state includes: The operating state of the power supply system is simulated to determine the operating parameters of the at least two power supplies.

3. The method according to claim 1, characterized in that The power supply system includes a first power supply and a second power supply; The first power supply is an energy type power supply, and the second power supply is a power type power supply.

4. The method according to claim 3, characterized in that If the operating parameter includes an operating current, then determining the operating parameters of at least two power supplies in the power supply system in the operating state includes: Obtaining a system operating current of the power supply system in a working state; An equivalent current of the system operating current is determined to be the operating current of the first power supply, and a difference between the system operating current and the equivalent current is determined to be the operating current of the second power supply.

5. The method according to claim 1, wherein The power supply system further includes a power conversion module electrically connected to the first-category target power supply and / or the second-category target power supply, and the reducing the operating current of the first-category target power supply and increasing the operating current of the second-category target power supply includes: The power conversion module is controlled to reduce the output power ratio of the first target power source and / or increase the output power ratio of the second target power source, so as to reduce the operating current of the first target power source and increase the operating current of the second target power source.

6. The method according to claim 1, characterized in that If, among the at least two power supplies, the first-category target power supply exists and the second-category target power supply does not exist, increasing the output voltage of the first-category target power supply and / or increasing the capacitance of the first-category target power supply; If the second-category target power source exists and the first-category target power source does not exist among the at least two power sources, the output voltage of the second-category target power source is reduced, and / or the capacitance of the second-category target power source is reduced.

7. A power management device, characterized in that: Applicable to a power supply system including multiple power supplies, the device includes: a determination module, configured to determine, in an operating state, operating parameters of at least two power supplies in the power supply system requiring life prediction and management; the operating parameters comprising at least one of an operating current, an operating voltage, and an operating power; a prediction module, configured to predict the service life of the at least two power supplies in an operating state based on the operating parameters; An adjustment module is configured to reduce the operating current of a first-category target power supply whose service life is less than the design life and increase the operating current of the second-category target power supply if, among the at least two power supplies, there is a first-category target power supply whose service life is less than the design life and there is a second-category target power supply whose service life is greater than the design life, so that the service life of the first-category target power supply and the second-category target power supply are the same as their respective design life.

8. A power supply system, characterized in that: including at least two power supplies, and, electronic equipment; The electronic device is electrically connected to the at least two power sources, and the electronic device is used to execute the method according to any one of claims 1 to 6.

9. The power supply system according to claim 8, characterized in that: Also includes a power conversion module; the at least two power supplies include a first power supply and a second power supply; The power conversion module is electrically connected to the first power source and / or the second power source; the power conversion module is also electrically connected to the electronic device; The first power supply is an energy type power supply, and the second power supply is a power type power supply.

10. A mechanical device, characterized in that: A power supply system comprising the power supply system according to any one of claim 8 or claim 9.

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