Voltage controlled power supply system for automobile, power supply system and automobile

Abstract

The present invention discloses a voltage-controlled power supply system, a power supply system, and a vehicle for an automobile. The present invention is used in a voltage-controlled power supply system for an automobile. Since a voltage conversion module can independently control the output voltage of each output terminal and enable the output voltage of each output terminal to be stepped down or stepped up relative to the supply voltage obtained at the input terminal of the voltage conversion module, the voltage conversion module can determine a step-down ratio or a step-up ratio based on the voltage requirements of each on-board electrical appliance, so that the output terminal outputs a voltage that matches the on-board electrical appliance, thereby achieving refined voltage control and power supply for different on-board electrical appliances and ensuring the functional realization of different on-board electrical appliances. Furthermore, for the power supply module, the power supply module can be allowed to provide only a single supply voltage, thereby simplifying the requirements for the power supply module and facilitating reduced use and maintenance costs of the power supply module. The present invention is widely applicable in the field of automotive technology.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular to a voltage-controlled power supply system, a power supply and utilization system, and an automobile. Background Art

[0002] Automobiles are equipped with a variety of on-board electrical appliances. These on-board electrical appliances have specific rated voltages, that is, the operating voltage that needs to be provided by an external power supply to the on-board electrical appliances to maintain normal working conditions. In addition, there is generally a certain voltage margin, which means that even if the actual voltage provided to the on-board electrical appliances is lower or higher than the rated voltage by a certain range, the on-board electrical appliances can still maintain normal operation.

[0003] Different automotive electrical appliances may have different rated voltages due to their technical design or electrical characteristics, and the differences between these voltages can be significant. For example, some headlight bulbs may have a rated voltage of 12V, while motors used in systems like air conditioning and power steering may have a rated voltage of 48V. When multiple automotive appliances with different rated voltages are installed in the same vehicle, it is necessary to consider providing them with corresponding rated voltages. However, the output voltage of the power supply installed in the same vehicle is limited to a specific voltage range, making it difficult to accommodate the diverse rated voltage requirements of multiple automotive appliances. Furthermore, there are often issues such as excessive supply current, resulting in severe power losses. Summary of the Invention

[0004] In view of the technical problems that the current automobile power supply technology is difficult to adapt to the diverse rated voltage requirements of multiple on-board electrical appliances and has serious losses, the purpose of the present invention is to provide a voltage-controlled power supply system, power supply system and automobile for automobiles.

[0005] In one aspect, an embodiment of the present invention includes a voltage-controlled power supply system for an automobile, the voltage-controlled power supply system for an automobile including:

[0006] Voltage conversion module; the voltage conversion module includes multiple output terminals, any of which is used to connect to the power supply terminal of at least one corresponding vehicle-mounted electrical appliance, and the voltage conversion module is used to independently control the output voltage of each output terminal.

[0007] Furthermore, the independently controlling the output voltage of each output terminal includes:

[0008] Combining all of the output terminals into at least one port group; any of the port groups includes at least one of the output terminals;

[0009] Synchronously controlling the output voltages of the output terminals in the same port group;

[0010] The output voltages of different port groups are independently controlled.

[0011] Furthermore, the voltage conversion module also includes a data acquisition terminal;

[0012] The voltage conversion module is used to collect the power supply demand information of each of the on-board electrical appliances through the data acquisition terminal.

[0013] Furthermore, combining all the output ports into at least one port group includes:

[0014] When one output terminal is used to connect a plurality of vehicle-mounted electrical appliances, each output terminal is used as a corresponding port group;

[0015] When one of the output ends is used to connect to one of the on-board electrical appliances, the on-board electrical appliances are clustered according to the power supply demand information, and the output ends connected to the on-board electrical appliances are combined into the port groups according to the clustering results; wherein, the output ends connected to the on-board electrical appliances clustered into the same category belong to the same port group, and the output ends connected to the on-board electrical appliances clustered into different categories belong to different port groups.

[0016] Furthermore, clustering the vehicle-mounted electrical appliances according to the power supply demand information includes:

[0017] Obtaining the discreteness of all the power supply demand information;

[0018] Determining the number of classifications of the clustering algorithm according to the degree of dispersion; the number of classifications is positively correlated with the degree of dispersion;

[0019] A clustering algorithm is executed on each of the power supply demand information according to the number of categories.

[0020] Furthermore, independently controlling the output voltages of different port groups includes:

[0021] For any of the port groups, the output voltage corresponding to the port group is determined according to the power supply requirement information corresponding to the port group; wherein the output voltage is positively correlated with the power supply requirement information.

[0022] Furthermore, independently controlling the output voltages of different port groups includes:

[0023] determining a degree of association between a plurality of the port groups;

[0024] Determining a linkage amplitude according to the correlation degree; wherein the linkage amplitude is positively correlated with the correlation degree;

[0025] Among the multiple port groups, determine one port group as a master control group and the other port groups as slave control groups;

[0026] Determining the output voltage corresponding to the main control group according to the power supply demand information corresponding to the main control group; wherein the output voltage is positively correlated with the power supply demand information;

[0027] Obtaining a voltage adjustment range of the main control group;

[0028] determining a voltage adjustment range of the slave control group according to the linkage range and the voltage adjustment range of the master control group;

[0029] The output voltage corresponding to the slave control group is determined according to the voltage adjustment amplitude of the slave control group.

[0030] Furthermore, determining the degree of association between the plurality of port groups includes:

[0031] Obtaining historical change characteristics of each of the power supply demand information corresponding to each of the port groups;

[0032] The degree of association is determined according to the historical change characteristics.

[0033] On the other hand, an embodiment of the present invention further includes a power supply system for an automobile, the power supply system for an automobile comprising:

[0034] A voltage-controlled power supply system for an automobile in an embodiment;

[0035] At least one onboard electrical appliance.

[0036] On the other hand, an embodiment of the present invention further includes a car, comprising:

[0037] A voltage-controlled power supply system for an automobile in an embodiment;

[0038] or

[0039] A power supply system for a vehicle in an embodiment.

[0040] The beneficial effects of the present invention are as follows: in the voltage-controlled power supply system for automobiles in the embodiment, since the voltage conversion module can independently control the output voltage of each output terminal, and the output voltage of each output terminal can be stepped down or stepped up relative to the power supply voltage obtained at the input terminal of the voltage conversion module, the voltage conversion module can determine the step-down ratio or step-up ratio according to the voltage requirements of each on-board electrical appliance, so that the output terminal outputs a voltage that matches the on-board electrical appliance, thereby realizing refined voltage control power supply for different on-board electrical appliances and ensuring the functional realization of different on-board electrical appliances. As for the power supply module side, the power supply module can be allowed to provide only a single power supply voltage, thereby simplifying the requirements for the power supply module and helping to reduce the use and maintenance costs of the power supply module. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of a first wiring method of a voltage-controlled power supply system for an automobile in an embodiment;

[0042] Figure 2 Schematic diagram of a second wiring method of a voltage-controlled power supply system for an automobile in an embodiment;

[0043] Figure 3 Schematic diagram of the port group in the embodiment. DETAILED DESCRIPTION

[0044] In this embodiment, a voltage-controlled power supply system for an automobile is provided. The voltage-controlled power supply system for an automobile includes a voltage conversion module, a voltage-controlled power supply system for an automobile, and a plurality of onboard electrical appliances to be voltage-controlled and powered, forming a power supply system for the automobile.

[0045] like Figure 1 As shown, the voltage-controlled power supply system for a vehicle includes a voltage conversion module and a power supply module, wherein the voltage conversion module includes an input terminal, a data acquisition terminal, and multiple output terminals. The voltage conversion module can collect data from the outside world through the data acquisition terminal for processing, receive the power output by the power supply module through the input terminal, and perform voltage conversion through DC-DC and other technologies, and output the power through the output terminal. For example, the voltage conversion module is provided with a controller, multiple PWM waveform generators, and multiple buck-boost circuits (for example, BUCK-BOOST circuits, specifically, BUCK-BOOST basic circuits or improved buck-boost circuits based on the BUCK-BOOST principle). Each buck-boost circuit is equipped with a PWM waveform generator, and the input terminals of all buck-boost circuits are connected to Figure 1The input end of the medium voltage conversion module is connected to the output end of the power supply module; the controller can independently adjust the duty cycle of the PWM waveform generated by each PWM waveform generator, thereby adjusting the step-down ratio or step-up ratio of the corresponding step-up and step-down circuit, so that the step-up and step-down circuit can step up or step down the specific voltage of the electric energy provided by the power supply module. The output end of each step-up and step-down circuit serves as Figure 1 An output terminal of the medium voltage conversion module.

[0046] In this embodiment, the power supply module can specifically be a 12V battery (power battery), a 48V battery (power battery) or an on-board generator (generally with an output voltage of 15V), that is, the voltage obtained at the input end of the voltage conversion module can be constant, and by independently adjusting the duty cycle of the PWM waveform obtained by each buck-boost circuit inside the voltage conversion module, the voltage of each output end such as output end 1, output end 2...output end 9 can be independently adjusted, and the voltage can be boosted or bucked based on the voltage obtained at the input end of the voltage conversion module.

[0047] In this embodiment, you can refer to Figure 1 , connect each output terminal of the voltage conversion module to the power supply terminal of a corresponding on-board electrical appliance, for example, connect output terminal 1 to on-board electrical appliance 1, which is the air-conditioning compressor motor, connect output terminal 2 to on-board electrical appliance 2, which is the air-conditioning fan motor... connect output terminal 9 to on-board electrical appliance 9, which is the on-board charger; you can also refer to Figure 2 , connect each output end of the voltage conversion module to the power supply end of one or more corresponding vehicle-mounted electrical appliances, for example, connect output end 1 to vehicle-mounted electrical appliance 1 (air-conditioning compressor motor), vehicle-mounted electrical appliance 2 (air-conditioning fan motor) and vehicle-mounted electrical appliance 3 (window motor), connect output end 4 to vehicle-mounted electrical appliance 4 (ambient light) and vehicle-mounted electrical appliance 5 (instrument light)... and connect output end 9 to vehicle-mounted electrical appliance 9 (vehicle charger).

[0048] In this embodiment, if Figure 1 The connection method is that the output end of the voltage conversion module corresponds to the vehicle-mounted electrical appliances one by one, and can be connected arbitrarily on the basis of ensuring safety.

[0049] If you follow Figure 2The connection mode, that is, one output terminal of the voltage conversion module can be connected to multiple on-board electrical appliances. The connection can be made arbitrarily on the basis of ensuring safety. Alternatively, the correlation between the rated voltage and the power characteristics of different on-board electrical appliances can be considered in advance. Multiple on-board electrical appliances with a correlation higher than a threshold, that is, a high correlation, can be connected to the same output terminal of the voltage conversion module, and on-board electrical appliances with a correlation lower than the threshold, that is, a low correlation, can be connected to different output terminals of the voltage conversion module. For example Figure 2 In the embodiment, according to general usage habits, the on-board electrical appliances 1 (air-conditioning compressor motor), on-board electrical appliances 2 (air-conditioning fan motor) and on-board electrical appliances 3 (window motor) are easily used by the vehicle occupants in the same time period, that is, the on-board electrical appliances 1 (air-conditioning compressor motor), on-board electrical appliances 2 (air-conditioning fan motor) and on-board electrical appliances 3 (window motor) are easily subjected to a synchronous increase in working power in the same time period. Therefore, it can be determined in the design or calibration test stage that the usage power characteristics of the on-board electrical appliances 1 (air-conditioning compressor motor), on-board electrical appliances 2 (air-conditioning fan motor) and on-board electrical appliances 3 (window motor) have a high degree of correlation, and the rated voltages of the on-board electrical appliances 1 (air-conditioning compressor motor), on-board electrical appliances 2 (air-conditioning fan motor) and on-board electrical appliances 3 (window motor) have a high degree of correlation (for example, the rated voltages are close), so that they are connected to the same output terminal of the voltage conversion module, that is, the output terminal 1.

[0050] In this embodiment, since the voltage conversion module can independently control the output voltage of each output end, and the output voltage of each output end can be stepped down or stepped up relative to the power supply voltage obtained at the input end of the voltage conversion module, the voltage conversion module can determine the step-down ratio or step-up ratio according to the voltage requirements of each on-board electrical appliance, so that the output end outputs a voltage that matches the on-board electrical appliance, thereby realizing refined voltage control and power supply for different on-board electrical appliances, and ensuring the functional realization of different on-board electrical appliances. As for the power supply module side, the power supply module can be allowed to provide only a single power supply voltage (for example, 12V or 48V), thereby simplifying the requirements for the power supply module and helping to reduce the use and maintenance costs of the power supply module.

[0051] In this embodiment, the voltage conversion module may perform completely independent output voltage control on each output terminal, or may specifically perform the following steps when independently controlling the output voltage of each output terminal:

[0052] S1. Collect the power supply demand information of each vehicle electrical appliance through the data acquisition terminal;

[0053] S2. Combining all output ports into at least one port group;

[0054] S3 synchronizes the output voltage of each output terminal in the same port group;

[0055] S4. Independently control the output voltages of different port groups.

[0056] In step S1, the power demand information collected by the voltage conversion module represents the actual power required by the onboard electrical appliance to perform its function, the current power required to perform its function, or the power required by the onboard electrical appliance in the future. For example, for onboard electrical appliance 1 (the air conditioner compressor motor), the voltage conversion module collects power demand information for onboard electrical appliance 1 (the air conditioner compressor motor), namely power demand information 1, through the data acquisition terminal. Power demand information 1 represents the power required by onboard electrical appliance 1 (the air conditioner compressor motor) to drive the air conditioner compressor for cooling, either currently or in the future. Based on the same principle, the voltage conversion module also collects power demand information 2, power demand information 3, and power demand information 9 from onboard electrical appliances 2 (the air conditioner blower motor), 3 (the window motor), and 9 (the onboard charger), respectively.

[0057] In this embodiment, the power supply demand information can specifically be in the form of a power time series (indicating the actual power supply required for the vehicle-mounted electrical appliance to actually perform its function) or a power value (indicating the power supply currently required for the vehicle-mounted electrical appliance to perform its function, or indicating the power supply required for the vehicle-mounted electrical appliance to perform its function in the future as predicted).

[0058] In step S2, the voltage conversion module groups all output terminals, such as output terminal 1, output terminal 2, ..., output terminal 9, into one or more port groups, each of which includes one or more output terminals. The voltage conversion module then executes steps S3-S4 to independently control the output voltages of different port groups and synchronously control the output voltages of all output terminals in the same port group.

[0059] For example, refer to Figure 3The voltage conversion module combines output terminals 1, 2, and 3 into port group 1, combines output terminals 4 and 5 into port group 2, uses output terminal 6 alone as port group 3, combines output terminals 7 and 8 into port group 4, and uses output terminal 9 alone as port group 5. When executing steps S3-S4, the voltage conversion module synchronously controls the output voltages of each output terminal in the same port group. For example, for output terminal 1, output terminal 2 and output terminal 3 belonging to port group 1, the voltage conversion module synchronously controls the output voltages of these three output terminals, so that the output voltages of these three output terminals synchronously increase, decrease or remain unchanged, and the output voltages at the same time are the same; the voltage conversion module independently controls the output voltages of different port groups. For example, the output voltage control of port group 1 (output terminal 1, output terminal 2 and output terminal 3) and port group 4 (output terminal 7 and output terminal 8) is independent, and the increase, decrease or unchanged output voltages of port group 1 and port group 4 may not be synchronized (for example, completely out of sync, or not completely synchronized), and the output voltages of port group 1 and port group 4 are not necessarily the same at the same time.

[0060] In this embodiment, the voltage conversion module realizes the minimum unit for independently controlling the output voltage using the port group by executing steps S2-S4; compared with the minimum unit for independently controlling the output voltage using the output end when steps S2-S4 are not executed, the number of independently controlled minimum units is reduced, which is beneficial to reducing the control difficulty of the voltage conversion module. For example, the number of PWM waveforms that the voltage conversion module needs to generate can be reduced (the buck-boost circuits corresponding to each output end in the same port group can share the same PWM waveform), and the number of voltage levels generated and outputted inside the voltage conversion module can be reduced.

[0061] In this embodiment, when executing step S2, that is, combining all output ports into at least one port group, the following steps may be specifically performed:

[0062] S201. When an output terminal is used to connect multiple vehicle-mounted electrical appliances, each output terminal is used as a corresponding port group;

[0063] S202. When an output end is used to connect an on-board electrical appliance, the on-board electrical appliances are clustered according to the power supply demand information, and the output ends connected to the on-board electrical appliances are combined into port groups according to the clustering results; wherein, the output ends connected to the on-board electrical appliances clustered into the same category belong to the same port group, and the output ends connected to the on-board electrical appliances clustered into different categories belong to different port groups.

[0064] In this embodiment, if the Figure 2In the manner shown, that is, one output terminal of the voltage conversion module is connected to multiple on-board electrical appliances (or one output terminal is only connected to one on-board electrical appliance, or some output terminals are not connected to any on-board electrical appliances), then step S201 can be selected. This is because the correlation between the rated voltage and the power characteristics of different on-board electrical appliances has been taken into account when making such connections. For example, Figure 2 As shown in the figure, multiple on-board electrical appliances with a high degree of correlation between rated voltage and power characteristics are connected to the same output terminal of the voltage conversion module, that is, using Figure 2 In the illustrated method, the rated voltages and power usage characteristics of different on-board electrical appliances connected to the same output terminal of the voltage conversion module are highly correlated. Therefore, the output terminal connected to the on-board electrical appliance can be directly used as a port group. In this case, step S1 can be omitted and steps S2-S4 can be directly executed.

[0065] In this embodiment, if the Figure 1 In the illustrated method, if one output terminal of the voltage conversion module is connected to one on-board electrical appliance (or some output terminals may not be connected to any on-board electrical appliances), then step S202 may be performed. Specifically, the voltage conversion module collects power demand information 1 corresponding to on-board electrical appliance 1, power demand information 2 corresponding to on-board electrical appliance 2, and so on. Then, a clustering algorithm such as k-means may be used to cluster each of the power demand information, namely, power demand information 1, power demand information 2, and so on.

[0066] Before executing the clustering algorithm, you can first set the number of categories corresponding to the clustering algorithm. This is the number of categories you want the clustering algorithm to generate by clustering the power demand information. In some clustering algorithms, the number of categories is also called the number of clusters. In this embodiment, the default or commonly used number of categories in the clustering algorithm can be used, or the number of categories can be determined based on the power demand information.

[0067] In this embodiment, the voltage conversion module can calculate the degree of dispersion of all power demand information, including power demand information 1, power demand information 2, ..., and power demand information 9. The degree of dispersion indicates the statistical dispersion of all power demand information. Specifically, the variance or standard deviation of all power demand information can be calculated as the degree of dispersion.

[0068] In step S202, after the degree of discreteness of all power supply demand information is calculated, the number of categories of the clustering algorithm is determined in a positive correlation, that is, the greater the degree of discreteness of all power supply demand information (the more dispersed the distribution of all power supply demand information), the larger the number of categories of the clustering algorithm is set to, the more categories the clustering algorithm is executed to divide each power supply demand information into, and the more port groups are finally obtained, that is, the more voltage levels there are; the smaller the degree of discreteness of all power supply demand information (the more concentrated the distribution of all power supply demand information), the smaller the number of categories of the clustering algorithm is set to, the fewer categories the clustering algorithm is executed to divide each power supply demand information into, and the fewer port groups are finally obtained, that is, the fewer voltage levels there are.

[0069] In step S202, after determining the number of categories for the clustering algorithm, the clustering algorithm is executed on all power demand information, including power demand information 1, power demand information 2, ..., and power demand information 9. The clustering algorithm can group each piece of power demand information into multiple clusters based on the similarity of their features. The number of clusters is equal to the number of categories.

[0070] For example, Figure 3 In the example, the number of categories of the clustering algorithm is set to 5. By executing the clustering algorithm, power demand information 1, power demand information 2, and power demand information 3 are clustered into one category, power demand information 4 and power demand information 5 are clustered into one category, power demand information 6 is clustered into a separate category, power demand information 7 and power demand information 8 are clustered into one category, and power demand information 9 is clustered into a separate category. In this way, the output ports 1, 2, and 3 corresponding to the power demand information 1, 2, and 3 clustered into one category are combined into port group 1, and so on, thereby obtaining Figure 3 The individual port groups are shown.

[0071] Figure 3 As an example, the output terminals in the same port group are adjacent to each other, but in actual use, the output terminals in the same port group are not necessarily adjacent to each other. Figure 3 The adjacent position relationship shown in FIG. 4 is shown, and by dynamically executing step S202 , the port group and the output ports contained therein can also be changed.

[0072] In this embodiment, by executing step S202, it is also possible to achieve the effect of combining output terminals with a high degree of correlation between rated voltage and power usage characteristics into the same port group as step S201, and performing synchronous voltage control as the minimum unit of voltage control; moreover, compared with step S201 which requires pre-determining the degree of correlation between each on-board electrical appliance, by executing step S202, there is no need to pre-determine the degree of correlation between each on-board electrical appliance, and the port group can be dynamically combined during the use of the car, thereby improving the flexibility of the port group combination, so that the output voltage adjustment of the port group can dynamically meet the power supply requirements of each on-board electrical appliance, which is conducive to refining and improving the matching of power supply, reducing the power consumption of the entire vehicle, and reducing the time and effort required for wiring; by The degree of discreteness of the power supply demand information is positively correlated with the number of categories of the clustering algorithm. When the degree of discreteness of the power supply demand information is large, that is, the power supply demands of various on-board electrical appliances tend to be diversified, more minimum units of voltage control, namely port groups, can be obtained, thereby realizing refined control of the power supply voltage of different on-board electrical appliances; when the degree of discreteness of the power supply demand information is small, that is, the power supply demands of various on-board electrical appliances tend to be unified, fewer minimum units of voltage control, namely port groups, can be obtained, thereby reducing the control difficulty of the voltage conversion module and reducing losses; therefore, by determining the number of categories of the clustering algorithm in a positive correlation according to the degree of discreteness of all power supply demand information when executing step S202, it is possible to balance the consumption reduction demand and the power supply demand.

[0073] In this embodiment, when the voltage conversion module executes step S4, that is, the step of independently controlling the output voltages of different port groups, the voltage conversion module may specifically execute the following steps:

[0074] S401A. For any port group, determine the output voltage corresponding to the port group according to the power supply demand information corresponding to the port group.

[0075] Step S401A is the first execution mode of step S4.

[0076] In step S401A, if a port group includes only one output port, then the power supply demand information of this output port is the power supply demand information of this port group; if a port group includes multiple output ports, then the average value of the power supply demand information of all output ports of this port group can be calculated as the power supply demand information of this port group.

[0077] In step S401A, Figure 2 and Figure 3Taking port group 1 in the example, if the power supply demand information of port group 1 indicates a greater power supply demand, the voltage conversion module will adjust the output voltages of all output terminals in port group 1, that is, output terminal 1, output terminal 2, and output terminal 3, to a greater value. Specifically, the voltage conversion module can obtain the interval where the power supply demand information of port group 1 is located, as well as the voltage adjustment interval of port group 1 (the minimum value of the voltage adjustment interval can be the lowest voltage to ensure the normal operation of each on-board electrical appliance connected to port group 1, which is generally lower than the rated voltage of each on-board electrical appliance; the maximum value of the voltage adjustment interval can be the highest voltage to ensure the normal operation of each on-board electrical appliance connected to port group 1, which is generally higher than the rated voltage of each on-board electrical appliance), establish a linear transformation in direct proportion between the interval where the power supply demand information is located and the voltage adjustment interval, thereby realizing the calculation of the adjusted voltage of port group 1.

[0078] In this embodiment, by executing step S401A, the output voltage of each port group can be made positively correlated with its power supply demand information, that is, the greater the power supply demand, the greater the output voltage of the port group, thereby being able to provide higher output voltages for those on-board electrical appliances with greater power supply demands, and can slow down the increase in output current when the power supply demand of the on-board electrical appliances increases, thereby reducing the loss caused by the increase in output current; moreover, the output voltages of each output terminal in the same port group are synchronously adjusted, and the on-board electrical appliances connected to each output terminal in the same port group generally have a high degree of correlation in terms of power usage characteristics, so by performing synchronous output voltage adjustment on each output terminal in the same port group that is positively correlated with the power supply demand, it is beneficial for some on-board electrical appliances to enter the working state in advance, thereby improving the response sensitivity, for example, Figure 2 and Figure 3 Taking port group 4 (output port 7 and output port 8) in as an example, when the power supply demand of the vehicle-mounted electrical appliance 7 (display) currently increases, due to the high correlation degree, it usually means that the power supply demand of the vehicle-mounted electrical appliance 8 (audio) is currently or will increase in the future. The increase in the power supply demand of the vehicle-mounted electrical appliance 7 (display) will cause the output voltage of the voltage conversion module to control port group 4 to increase, which increases the power supply voltage obtained by the vehicle-mounted electrical appliance 8 (audio), which can meet the current or future increased power supply demand of the vehicle-mounted electrical appliance 8 (audio), thereby improving the response speed of the vehicle-mounted electrical appliance 8 (audio) and improving the user experience.

[0079] In this embodiment, when the voltage conversion module executes step S4, that is, the step of independently controlling the output voltages of different port groups, the voltage conversion module may specifically execute the following steps:

[0080] S401B determines the degree of association between multiple port groups;

[0081] S402B. Determine the linkage range based on the degree of association;

[0082] S403B. Among multiple port groups, determine one port group as the master control group and the other port groups as slave control groups;

[0083] S404B. According to the power supply demand information corresponding to the main control group, determine the output voltage corresponding to the main control group; wherein the output voltage is positively correlated with the power supply demand information;

[0084] S405B obtains the voltage adjustment range of the main control group;

[0085] S406B according to the linkage amplitude and the voltage adjustment amplitude of the main control group, determine the voltage adjustment amplitude from the control group;

[0086] S407B. Determine the output voltage corresponding to the slave control group according to the voltage adjustment amplitude of the slave control group.

[0087] Steps S401B-S407B are a second execution mode of step S4.

[0088] In step S401B, the correlation degree to be determined may be the correlation degree between the power usage characteristics of the on-board electrical appliances connected to the port groups. Specifically, when executing step S401B, any two port groups may be traversed to determine the correlation degree between them.

[0089] When executing step S401B, taking port group 1 and port group 2 as an example, the power supply demand information in the form of a time series of each vehicle-mounted electrical appliance connected to port group 1 and the power supply demand information in the form of a time series of each vehicle-mounted electrical appliance connected to port group 2 can be obtained, and the Pearson correlation coefficient, time-lagged cross-correlation, instantaneous phase synchronization and other parameters of the two time series are calculated. One or more of these parameters are used as the degree of correlation between the two time series, thereby obtaining the degree of correlation between port group 1 and port group 2.

[0090] The degree of correlation between the port group 1 and the port group 2 obtained by executing step S401B may indicate the degree of correlation between the power usage characteristics of the vehicle electrical appliances connected to the port group 1 and the port group 2, respectively. For example, when the degree of correlation between port group 1 and port group 2 is a positive number, it indicates that the power usage between the on-board electrical appliances connected to port group 1 and port group 2 is highly positively synchronized. Specifically, based on the usage habits of car users, when the power usage demand of the on-board electrical appliances connected to port group 1 increases, the power usage demand of the on-board electrical appliances connected to port group 2 will generally increase in tandem, and the greater the degree of correlation, the greater the degree of linkage increase. When the degree of correlation between port group 1 and port group 2 is zero, it indicates that the power usage synchronization between the on-board electrical appliances connected to port group 1 and port group 2 is small or non-synchronous. When the degree of correlation between port group 1 and port group 2 is a negative number, it indicates that the power usage between the on-board electrical appliances connected to port group 1 and port group 2 is highly negatively synchronized. Specifically, based on the usage habits of car users, when the power usage demand of the on-board electrical appliances connected to port group 1 increases, the power usage demand of the on-board electrical appliances connected to port group 2 will generally decrease in tandem, and the greater the degree of correlation, the greater the degree of linkage decrease.

[0091] In step S402B, the linkage amplitude is positively correlated with the degree of association obtained in step S401B. For example, a positive proportionality coefficient (specifically, 1) can be set, and the linkage amplitude is obtained by multiplying the degree of association by the positive proportionality coefficient. The linkage amplitude can be expressed as a percentage and has the same positive and negative sign as the degree of association.

[0092] Since steps S401B-S402B can be performed on any two port groups, a corresponding linkage range is determined between any two port groups. For example, in this embodiment, steps S401B-S402B can determine that the linkage range between port group 1 and port group 2 is 80%, the linkage range between port group 1 and port group 3 is 50%, and the linkage range between port group 1 and port group 3 is -50%.

[0093] In step S403B, a port group can be randomly selected from all port groups as the master control group, or it can be selected as the master control group based on needs (for example, based on the functions of the connected on-board electrical appliances, determining the port group connected to the on-board electrical appliances that require sensitive control). Among all port groups, port groups that are not part of the master control group are designated as slave control groups. In this embodiment, port group 1 is used as the master control group as an example for description.

[0094] The principle of step S404B is the same as that of step S401A, which is equivalent to making any port group in step S401A a main control group to adjust the output voltage.

[0095] During step S404B, the difference between the output voltage of the main control group, i.e., port group 1, before and after adjustment is recorded, thereby determining the voltage adjustment amplitude of the output voltage of port group 1 after step S404B is executed. For example, if the output voltage of port group 1 is 12V before step S404B is executed and 13V after step S404B is executed, then step S405B is executed to calculate the voltage adjustment amplitude of port group 1 to be 1V.

[0096] Step S406B determines the voltage adjustment ranges of the slave control groups based on the voltage adjustment range of 1V of the master control group and the linkage ranges between the master control group and each slave control group. For example, in this embodiment, the linkage range between the master control group (i.e., port group 1) and the slave control group (i.e., port group 2) is 80%. Therefore, the voltage adjustment range of port group 2 is calculated to be 1V × 80% = 0.8V. The linkage range between the master control group and the slave control group (i.e., port group 3) is 50%. Therefore, the voltage adjustment range of port group 3 is calculated to be 1V × 50% = 0.5V. The linkage range between the master control group and the slave control group (i.e., port group 4) is -50%. Therefore, the voltage adjustment range of port group 2 is calculated to be 1V × (-50%) = -0.5V.

[0097] The voltage conversion module executes step S407B to determine the output voltage of the corresponding slave control group based on the voltage adjustment range of the slave control group. For example, if the voltage adjustment range of port group 2 is 0.8V, then step S407B is executed to increase the output voltage of port group 2 by 0.8V; if the voltage adjustment range of port group 3 is 0.5V, then step S407B is executed to increase the output voltage of port group 3 by 0.5V; if the voltage adjustment range of port group 4 is -0.5V, then step S407B is executed to decrease the output voltage of port group 2 by 0.5V, etc., thereby adjusting the output voltage of each slave control group.

[0098] In this embodiment, the principle of executing steps S401B-S407B is that step S401A is a completely independent voltage regulation of each port group, while steps S401B-S407B are an incompletely independent voltage regulation of each port group; wherein, the voltage regulation of the port group belonging to the main control group can quickly and sensitively adjust the output voltage of the main control group. On the basis of the voltage regulation of the port group belonging to the main control group, the voltage regulation of the port group belonging to the slave control group can, on the one hand, be used to track the output voltage of the main control group, as the voltage adjustment amplitude of the slave control group is determined according to the degree of correlation between the slave control group and the main control group. Therefore, the power supply demand of the on-board electrical equipment connected to the slave control group can be met. On the other hand, there is no need to collect the power supply demand information of the on-board electrical equipment connected to the slave control group for processing, which can reduce the processing required by the voltage conversion module and speed up the response speed of the voltage conversion module.

[0099] In this embodiment, the voltage-controlled power supply system for an automobile and / or the power supply and utilization system for an automobile can be installed on the automobile, so that the voltage-controlled power supply system for an automobile and / or the power supply and utilization system for an automobile become a part of the automobile, thereby making the automobile as a whole have the technical effects of the voltage-controlled power supply system for an automobile and / or the power supply and utilization system for an automobile.

[0100] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in this disclosure are only relative to the relative positional relationships of the components of the present disclosure in the accompanying drawings. The singular forms of "a", "" and "the" used in this disclosure are also intended to include the plural forms, unless the context clearly indicates otherwise. In addition, unless otherwise defined, all technical and scientific terms used in this embodiment have the same meaning as those generally understood by those skilled in the art. The terms used in the specification of this embodiment are only for describing specific embodiments and are not intended to limit the invention. The term "and / or" used in this embodiment includes any combination of one or more related listed items.

[0101] It should be understood that, although the present disclosure may adopt the term first, second, third etc. to describe various elements, these elements should not be limited to these terms.These terms are only used to distinguish the elements of the same type from each other.For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.The use of any and all examples or exemplary language ("for example", "such as" etc.) provided by the present embodiment is only intended to better illustrate embodiments of the present invention, and unless otherwise required, the scope of the present invention will not be limited.

[0102] It should be appreciated that embodiments of the present invention can be implemented or practiced by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable memory. The methods can be implemented in a computer program using standard programming techniques - including a non-transitory computer-readable storage medium configured with a computer program, wherein the storage medium so configured causes the computer to operate in a specific and predefined manner - according to the methods and figures described in the specific embodiments. Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with the computer system. However, if desired, the program can be implemented in assembly or machine language. In any case, the language can be a compiled or interpreted language. In addition, the program can be run on a programmed application-specific integrated circuit for this purpose.

[0103] In addition, the operations of the processes described in this embodiment may be performed in any suitable order, unless otherwise indicated in this embodiment or otherwise clearly contradicted by the context. The processes described in this embodiment (or variations and / or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) that is executed collectively on one or more processors, by hardware, or a combination thereof. A computer program includes multiple instructions that can be executed by one or more processors.

[0104] Furthermore, the method can be implemented in any type of computing platform that is operably connected to a suitable computer, including but not limited to a personal computer, a minicomputer, a mainframe, a workstation, a network or distributed computing environment, a separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, etc. Various aspects of the present invention can be implemented as machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, an optical read and / or write storage medium, RAM, ROM, etc., so that it can be read by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the process described herein. In addition, the machine-readable code, or portions thereof, can be transmitted over a wired or wireless network. When such media includes instructions or programs that implement the above steps in conjunction with a microprocessor or other data processor, the invention of this embodiment includes these and other different types of non-transitory computer-readable storage media. When programmed according to the methods and techniques of the present invention, the present invention also includes the computer itself.

[0105] The computer program can be applied to input data to perform the functions of the present embodiment, thereby converting the input data to generate output data that is stored in a non-volatile memory. The output information can also be applied to one or more output devices such as a display. In a preferred embodiment of the present invention, the converted data represents a physical and tangible object, including a specific visual depiction of the physical and tangible object produced on the display.

[0106] The above are merely preferred embodiments of the present invention. The present invention is not limited to the aforementioned embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. Within the scope of protection of the present invention, various modifications and variations of the technical solutions and / or implementation methods may be made.

Claims

1. A voltage-controlled power supply system for an automobile, characterized in that: The voltage-controlled power supply system for a vehicle comprises: A voltage conversion module; the voltage conversion module includes multiple output terminals, each of which is used to connect to the power supply terminal of at least one corresponding on-board electrical appliance, and the voltage conversion module is used to independently control the output voltage of each of the output terminals; the voltage conversion module also includes a data acquisition terminal; the voltage conversion module is used to collect power supply demand information of each of the on-board electrical appliances through the data acquisition terminal; The independently controlling the output voltage of each output terminal comprises: Combining all of the output terminals into at least one port group; any of the port groups includes at least one of the output terminals; Synchronously controlling the output voltages of the output terminals in the same port group; determining a degree of association between a plurality of the port groups; Determining a linkage amplitude according to the correlation degree; wherein the linkage amplitude is positively correlated with the correlation degree; Among the multiple port groups, determine one port group as a master control group and the other port groups as slave control groups; Determining the output voltage corresponding to the main control group according to the power supply demand information corresponding to the main control group; wherein the output voltage is positively correlated with the power supply demand information; Obtaining a voltage adjustment range of the main control group; determining a voltage adjustment range of the slave control group according to the linkage range and the voltage adjustment range of the master control group; The output voltage corresponding to the slave control group is determined according to the voltage adjustment amplitude of the slave control group.

2. The voltage-controlled power supply system for a vehicle according to claim 1, characterized in that: Combining all the output ports into at least one port group comprises: When one output terminal is used to connect a plurality of vehicle-mounted electrical appliances, each output terminal is used as a corresponding port group; When one of the output ends is used to connect to one of the on-board electrical appliances, the on-board electrical appliances are clustered according to the power supply demand information, and the output ends connected to the on-board electrical appliances are combined into the port groups according to the clustering results; wherein, the output ends connected to the on-board electrical appliances clustered into the same category belong to the same port group, and the output ends connected to the on-board electrical appliances clustered into different categories belong to different port groups.

3. The voltage-controlled power supply system for a vehicle according to claim 2, characterized in that: The clustering of the vehicle-mounted electrical appliances according to the power supply demand information includes: Obtaining the discreteness of all the power supply demand information; Determining the number of classifications of the clustering algorithm according to the degree of dispersion; the number of classifications is positively correlated with the degree of dispersion; A clustering algorithm is executed on each of the power supply demand information according to the number of categories.

4. The voltage-controlled power supply system for a vehicle according to any one of claims 1 to 3, characterized in that: The independently controlling the output voltages of different port groups includes: For any of the port groups, the output voltage corresponding to the port group is determined according to the power supply requirement information corresponding to the port group; wherein the output voltage is positively correlated with the power supply requirement information.

5. The voltage-controlled power supply system for a vehicle according to claim 4, characterized in that: Determining the degree of association between the plurality of port groups includes: Obtaining historical change characteristics of each of the power supply demand information corresponding to each of the port groups; The degree of association is determined according to the historical change characteristics.

6. A power supply system for a car, characterized in that: The power supply system for a vehicle comprises: The voltage-controlled power supply system for a vehicle according to any one of claims 1 to 5; At least one onboard electrical appliance.

7. An automobile, characterized in that: The car includes: The voltage-controlled power supply system for a vehicle according to any one of claims 1 to 5; or The power supply system for an automobile as claimed in claim 6.

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