A power supply and use control system, a power supply and use system and an automobile

Abstract

The application discloses a power supply and consumption control system, a power supply and consumption system and a car, wherein a control unit is used for detecting power supply device working parameters and power consumption device working parameters, and controlling the power supply power of the on-board power supply device to the on-board power consumption device according to the power supply device working parameters and the power consumption device working parameters. The control unit of the power supply and consumption control system, the power supply and consumption system and the car according to the application can reduce the risk of the on-board power supply device or the on-board power consumption device overloading, heating, damaging or catching fire, and protect the use safety of the car. Moreover, the control unit is part of the power supply circuit, and can protect the on-board power supply device and the on-board power consumption device at the same time, or can protect multiple on-board power supply devices and / or multiple on-board power consumption devices at the same time, thereby saving cost and improving the protection effect. The application is widely applied in the technical field of cars.

Description

Technical Field

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

[0002] The trend toward electronic and intelligent vehicles requires a large number of onboard electrical appliances, including headlights, air conditioners, motors, electric power steering systems, speakers, ambient lighting, and more. To power these appliances, an onboard power supply is required. This power supply can be a generator, battery, or power battery. The onboard power supply can be connected to the onboard electrical appliances point-to-point or via a busbar.

[0003] The on-board power supply and on-board electrical appliances each have a certain safe range of operating current (or power). Exceeding this safe range can easily lead to faults such as electrical overheating, or even fire and even burn the car. Therefore, it is necessary to monitor parameters such as the operating current (or power) of the on-board power supply and on-board electrical appliances, and limit the current or power when necessary to reduce the risk of overheating and fire.

[0004] Current automotive electrical technology primarily relies on internally integrated or specially configured monitoring systems to monitor parameters such as operating current (or power). For example, power batteries are equipped with a Battery Management System (BMS) to monitor parameters such as temperature, charge and discharge voltage, and current. However, due to the large number of onboard electrical appliances and power supplies in vehicles, most do not have internally integrated or dedicated monitoring systems due to cost control and technical complexity. As a result, they still face a high risk of overheating and fire due to excessive operating limits. Summary of the Invention

[0005] In view of the technical problems faced by current vehicle-mounted electrical technology, such as the high risk of overheating and fire, the purpose of the present invention is to provide a power supply and utilization control system for a vehicle, a power supply and utilization system, and a vehicle.

[0006] In one aspect, an embodiment of the present invention includes a method for processing social application conversation information in a driving scenario, the method comprising the following steps:

[0007] Control unit; the control unit is connected to the vehicle power supply and the vehicle electrical appliance, as part of the power supply circuit between the vehicle power supply and the vehicle electrical appliance;

[0008] The control unit is used to detect the working parameters of the power supply and the working parameters of the electrical appliances, and control the power supply of the vehicle-mounted power supply to the vehicle-mounted electrical appliances according to the working parameters of the power supply and the working parameters of the electrical appliances; wherein the working parameters of the power supply are the working parameters of the vehicle-mounted power supply, and the working parameters of the electrical appliances are the working parameters of the vehicle-mounted electrical appliances.

[0009] Furthermore, controlling the power supplied by the vehicle-mounted power supply to the vehicle-mounted electrical appliance according to the operating parameters of the power supply and the operating parameters of the electrical appliance includes:

[0010] Determining that the operating parameters of the power supply and the operating parameters of the electrical appliance reach a first steady state in a first time period;

[0011] Determining that the operating parameters of the power supply and the operating parameters of the electrical appliance reach a second steady state in a second time period; the second time period is a time period after the first time period;

[0012] The power supply is adjusted according to the first steady state and the second steady state.

[0013] Furthermore, determining that the operating parameters of the power supply and the operating parameters of the electrical appliance reach a first steady state in a first time period includes:

[0014] Taking the current time period as the first time period;

[0015] In the first time period, the operating parameters of the power supply and the operating parameters of the electrical appliance are measured, and the first steady state is determined according to the measurement results.

[0016] Furthermore, determining that the operating parameters of the power supply and the operating parameters of the electrical appliance reach a second steady state in a second time period includes:

[0017] During the first time period, detecting a power demand event;

[0018] According to the power demand event, the values ​​of the power supply operating parameters and the electrical appliance operating parameters in the second time period are predicted, and the second steady state is determined according to the prediction result.

[0019] Furthermore, predicting values ​​of the power supply operating parameters and the electrical appliance operating parameters in the second time period based on the power demand event, and determining the second steady state based on the prediction results, includes:

[0020] determining a time change value according to the first time period and the second time period;

[0021] determining a steady-state change value according to the power demand event and the time change value;

[0022] The second steady state is determined according to the first steady state and the steady state change value.

[0023] Furthermore, adjusting the power supply according to the first steady state and the second steady state includes:

[0024] determining a steady-state change value according to the first steady state and the second steady state;

[0025] determining a time change value according to the first time period and the second time period;

[0026] determining a steady-state change rate according to the steady-state change value and the time change value;

[0027] When the steady-state change rate is greater than a rate threshold, obtaining the required power required by the power demand event;

[0028] When the required power is greater than the first rated power and less than the second rated power, the power supply power is determined according to the steady-state change value; wherein, the first rated power is the minimum value between the rated power of the on-board power supply and the rated power of the on-board electrical appliance, and the second rated power is the maximum value between the rated power of the on-board power supply and the rated power of the on-board electrical appliance.

[0029] Furthermore, determining the power supply power according to the steady-state change value includes:

[0030] Obtaining a first angle; wherein the first angle is the angle between a unit vector of an operating parameter of the on-board electrical appliance corresponding to the first rated power and the steady-state change value;

[0031] determining an increase range of the required power according to the first angle; wherein the increase range is positively correlated with the first angle;

[0032] Within the range of the second rated power, increasing the required power according to the increase amplitude;

[0033] The increased required power is determined as the supplied power.

[0034] Furthermore, the adjusting the power supply according to the first steady state and the second steady state further includes:

[0035] When the required power is less than the first rated power or greater than the second rated power, the required power is determined as the supply power.

[0036] 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:

[0037] A power supply and utilization control system for a vehicle in an embodiment;

[0038] On-board power supply;

[0039] Car electrical appliances.

[0040] On the other hand, an embodiment of the present invention further includes a car, comprising:

[0041] A power supply and utilization control system for a vehicle in an embodiment;

[0042] or

[0043] The power supply system for a car described in the embodiment.

[0044] The beneficial effects of the present invention are as follows: the power supply and use control system for a vehicle in the embodiment, wherein the control unit controls the power supplied by the on-board power supply to the on-board electrical appliances according to the working parameters of the power supply and the working parameters of the electrical appliances, can reduce the risk of overloading of the on-board power supply or the on-board electrical appliances and causing heating, damage or fire, thereby protecting the safety of the vehicle; moreover, the control unit is part of the power supply circuit, and can protect the on-board power supply and the on-board electrical appliances at the same time, or can protect multiple on-board power supplies and / or multiple on-board electrical appliances at the same time, thereby saving costs and increasing the protection surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 Schematic diagram of the structure of the power supply and utilization control system for an automobile in an embodiment;

[0046] Figure 2 Schematic diagram of the structure of the power supply system for a car in an embodiment;

[0047] Figure 3 Schematic diagram of the working principle of the power supply system for a car in an embodiment;

[0048] Figure 4 Schematic diagram of steps executed by the control unit in the embodiment;

[0049] Figure 5 This is a schematic diagram of the principle of step S305 in the embodiment;

[0050] Figure 6 Schematic diagram of the principle of step S306 in the embodiment. DETAILED DESCRIPTION

[0051] In this embodiment, a power supply and utilization control system for a vehicle is provided. The power supply and utilization control system for a vehicle includes a control unit, and the structure of the control unit is as follows: Figure 1 As shown. Figure 1The control unit includes a switching device and a controller. The switching device includes an input end, an output end and a controlled end, wherein the input end can be connected to the power supply through a wire, and the output end can be connected to the electrical appliance through a wire, so that the switching device becomes part of the power supply line between the power supply and the electrical appliance; the controlled end is connected to the control end of the controller, and the controller can control the switching state of the switching device so that the switching device is in a fully open, fully closed or half-open state (for example, the controller can control the input impedance of the switching device so that the input impedance of the switching device is adjustable within the range of 10%-100% in the fully closed state, or the controller can output a PWM waveform with an adjustable duty cycle to the switching device); since the degree of limitation of the current (power) flowing from the input end to the output end when the switching device is in the fully open, fully closed or half-open state is different, the current (power) provided to the electrical appliance by the power supply can be controlled.

[0052] In this embodiment, Figure 2 As shown, the control unit is connected with the onboard power supply and onboard electrical appliances to form a power supply system for the vehicle. Figure 2 The power supply line input end of the control unit is connected to the on-board power supply, and the power supply line output end is connected to the on-board electrical appliances. The control unit serves as part of the power supply line between the on-board power supply and the on-board electrical appliances; the data line input end of the control unit is respectively connected to the on-board power supply and the on-board electrical appliances, and is used to collect the required data from the on-board power supply and the on-board electrical appliances, and according to the collected data, realize the control of the current (power) provided to the on-board electrical appliances by the on-board power supply.

[0053] In this embodiment, Figure 2 The vehicle-mounted power supply shown can be a specific power supply device, such as a power battery, Figure 2 The vehicle-mounted electrical appliance shown can be a specific electrical device, such as a motor used to drive the wheels of an electric vehicle. Figure 2 The power supply line is a point-to-point connection line. Figure 2 The vehicle-mounted power supply and vehicle-mounted electrical appliances shown can also be collectively referred to as multiple power supplies and electrical appliances. Figure 2 The power supply circuit in the system is a busbar shared by multiple electrical appliances. Specifically, for important (e.g., high-cost or closely related to the driving safety of the car) on-board power supplies (e.g., power batteries) and on-board electrical appliances (e.g., motors), a point-to-point connection method can be used, that is, one on-board power supply is connected to one on-board electrical appliance through one control unit. For relatively unimportant on-board electrical appliances, a busbar connection method can be used, for example, one on-board power supply is connected to multiple on-board electrical appliances through one control unit.

[0054] In this embodiment, a specific power supply device, namely a power battery, is used as an example of an on-board power supply, and a specific power-consuming device, namely a motor, is used as an example of an on-board electrical appliance. In order to illustrate the role of the control unit, it is assumed that neither the on-board power supply nor the on-board electrical appliance is internally integrated or externally equipped with a special protection system (such as a BMS).

[0055] In this embodiment, refer to Figure 3 The data collected by the control unit from the on-board power supply through the data line are the working parameters of the on-board power supply, that is, the power supply working parameters. The data collected by the control unit from the on-board electrical appliances through the data line are the working parameters of the on-board electrical appliances, that is, the electrical appliance working parameters.

[0056] In this embodiment, the control unit controls the power supply of the on-board power supply to the on-board electrical appliances according to the working parameters of the power supply and the working parameters of the electrical appliances. In this embodiment, it is assumed that the loss of the switching device in the control unit and the power consumption of the controller are very small, that is, the power consumption of the control unit itself is very small, so it can be considered that the power (current) flowing into the control unit is equal to the power (current) flowing out of the control unit. For example, the control unit can limit the power supply of the on-board power supply to the on-board electrical appliances, thereby avoiding the output power of the on-board power supply and the input power of the on-board electrical appliances being too large, reducing the risk of the on-board power supply or the on-board electrical appliances being overloaded and heating, damaged or catching fire, and protecting the safety of the car; moreover, the control unit is part of the power supply circuit, which can protect the on-board power supply and the on-board electrical appliances at the same time, or can protect multiple on-board power supplies and / or multiple on-board electrical appliances at the same time, thereby saving costs and increasing the protection surface.

[0057] In this embodiment, the control unit controls the power supply of the vehicle power supply to the vehicle electrical appliances according to the working parameters of the power supply and the working parameters of the electrical appliances, and refers to the Figure 4 , the control unit can specifically perform the following steps:

[0058] S1 determines the power supply operating parameters and electrical operating parameters in the first time period to reach a first steady state;

[0059] S2 determines the power supply operating parameters and electrical operating parameters in the second time period to reach a second steady state;

[0060] S3. Adjust the power supply according to the first steady state and the second steady state.

[0061] In this embodiment, the power supply working parameters to be detected specifically include the operating temperature Temperature1, discharge current I1, discharge voltage V1 and other parameters of the vehicle-mounted power supply (power battery); the electrical appliance working parameters to be detected specifically include the operating temperature Temperature2, input current I2, input voltage V2, speed rpm and output torque T and other parameters of the vehicle-mounted electrical appliance (motor).

[0062] In step S1, assuming that the first time period duration1 is the current time period, the control unit can call the sensor installed on the vehicle power supply (power battery) to perform actual measurement during the first time period duration1, thereby obtaining the actual measurement results, namely, the current measured values ​​of the operating temperature Temperature1, the discharge current I1, and the discharge voltage V1, which are respectively and At the same time, the control unit calls the sensors installed on the vehicle electrical appliances (motor) for actual measurement, thereby obtaining the actual measurement results, namely the current measured values ​​of the operating temperature Temperature2, input current I2, input voltage V2, speed rpm and output torque T, which are respectively rpm1 and T1.

[0063] In step S1, if the power supply operating parameters are measured in the first time period duration1, and And electrical appliance working parameters If rpm1 and T1 remain stable (for example, the fluctuation does not exceed the threshold) within a certain period of time (for example, the period of time exceeding p% in the first time period duration1, where p% is the threshold), then it can be determined that the operating parameters of the power supply and the operating parameters of the electrical appliance have reached a steady state within the first time period duration1, i.e., the first steady state. Specifically, the first steady state can be represented as a vector consisting of the measured values ​​of the operating parameters of the power supply and the measured values ​​of the operating parameters of the electrical appliance, in the form of

[0064] In this embodiment, when the control unit executes step S2, that is, the step of determining whether the operating parameters of the power supply and the operating parameters of the electrical appliance reach a second steady state in the second time period, the control unit may specifically execute the following steps:

[0065] S201. In the first time period, detecting a power demand event;

[0066] S202. Predict the values ​​of the power supply operating parameters and the electrical appliance operating parameters in the second time period according to the power demand event, and determine the second steady state according to the prediction result.

[0067] In step S201, the control unit detects whether a power demand event occurs within a first time period, duration1. A power demand event can be an event in which a user-performed operation causes an onboard electrical appliance to generate power demand, such as a driver pressing the accelerator pedal, which causes the motor to receive an acceleration command, generating power demand. A power demand event can also be an event in which an onboard electrical appliance automatically generates power demand when performing a function, such as a car in automatic cruise mode, detecting that it has entered an uphill section. To maintain a stable cruising speed, the motor control system automatically sends an acceleration command to the motor, generating power demand. In this embodiment, the power demand event can be in the form of a command.

[0068] In this embodiment, the power demand event may also be a fault such as a short circuit in an onboard electrical appliance, which causes the input impedance of the onboard electrical appliance to decrease, thereby generating an event equivalent to the power demand.

[0069] In step S202, the control unit predicts the values ​​of the power supply operating parameters and the electrical appliance operating parameters in the second time period in response to the power demand event, and determines a second steady state according to the prediction result.

[0070] In this embodiment, the second time period duration2 is the time period after the first time period duration1. The time interval between the second time period duration2 and the first time period duration1 can be set to a fixed value. For example, the second time period duration2 starts after a certain time interval (which can be 1 minute) after the end of the first time period duration1.

[0071] In step S202, the control unit calculates the time change value Δduration (for example, 1 minute) between the second time period duration2 and the first time period duration1, and determines the temperature rise rate, current increase rate, voltage increase rate, speed acceleration and torque acceleration of the power battery and the motor respectively according to the power demand event, such as the depth of the accelerator pedal or the intensity of the automatic cruise command, by looking up a table, etc., and determines the first steady-state according to the time change value Δduration. The change values ​​of each component in the first steady state are (ΔTemperature1, ΔI1, ΔV1, ΔTemperature2, ΔI2, ΔV2, Δrpm, ΔT). The second steady-state is obtained by summing the steady-state change values ​​(ΔTemperature1, ΔI1, ΔV1, ΔTemperature2, ΔI2, ΔV2, Δrpm, ΔT)

[0072] In this embodiment, the second steady state It is to predict the stable values ​​that the operating parameters of the power supply and the electrical appliance reach in the second time period duration2 (for example, remain stable for more than p% of the second time period duration2).

[0073] In this embodiment, to facilitate data processing, each component in the first and second steady states can be normalized. For example, for the speed rpm1 in the first steady state, its corresponding theoretical minimum speed can be mapped to 0, and its corresponding theoretical maximum speed can be mapped to 1, thereby mapping its actual value to the range of [0, 1] to obtain its normalized value. Through normalization, the dimension of each component can be removed and different components can be placed in the same value range.

[0074] In this embodiment, when the control unit executes step S3, that is, the step of adjusting the power supply according to the first steady state and the second steady state, the control unit may specifically execute the following steps:

[0075] S301. Determine a steady-state change value according to the first steady state and the second steady state;

[0076] S302. Determine the time change value according to the first time period and the second time period;

[0077] S303. Determine the steady-state change rate based on the steady-state change value and the time change value;

[0078] S304. When the steady-state rate of change is greater than the rate threshold, the power demand event is obtained;

[0079] S305. When the power demand is greater than the first rated power and less than the second rated power, the power supply is determined according to the steady-state change value; wherein the first rated power is the minimum of the rated power of the on-board power supply and the rated power of the on-board electrical appliance, and the second rated power is the maximum of the rated power of the on-board power supply and the rated power of the on-board electrical appliance;

[0080] S306. When the required power is less than the first rated power or greater than the second rated power, the required power is determined as the power supply power.

[0081] In steps S301-S303, according to the steady-state change value Δparameter=(ΔTemperature1, ΔI1, ΔV1, ΔTemperature2, ΔI2, ΔV2, Δrpm, ΔT) and the time change value Δduration, the The steady-state change rate indicates how quickly the operating parameters of the power supply and the electrical appliance switch from one steady state to another under the influence of a power demand event.

[0082] In step S304, a rate threshold can be set. If the steady-state change rate is less than or equal to the rate threshold, it can be determined that the steady-state change rate is not too large, so that steps S305-S306 are not triggered. If the steady-state change rate is greater than the rate threshold, it can be determined that the steady-state change rate is too large, so that the demand power required by the power demand event is obtained, and steps S305-S306 are triggered.

[0083] In step S304, the demand power required by the power demand event can be determined by table lookup or the like. The demand power represents the input power of the vehicle-mounted electrical device that can meet the power demand event, and is also the output power of the vehicle-mounted power supply. For example, the driver steps on the accelerator pedal to generate a power demand event in the form of an acceleration command. The depth at which the driver steps on the accelerator pedal can be converted to obtain the power that the vehicle-mounted power supply should provide to the vehicle-mounted electrical device to meet the acceleration requirement at this depth, i.e., the demand power.

[0084] In this embodiment, in the case of stable vehicle-mounted circuit voltage, the demand power and other power parameters are directly proportional to the current, so these power parameters can be represented by current parameters.

[0085] The vehicle-mounted power supply and the vehicle-mounted electrical device each have a rated power. The rated power of the vehicle-mounted power supply represents the maximum power that the vehicle-mounted power supply can continuously and stably output under normal working conditions, and the rated power of the vehicle-mounted electrical device represents the maximum power that the vehicle-mounted electrical device can continuously and stably input under normal working conditions. The rated power of each of the vehicle-mounted power supply and the vehicle-mounted electrical device can be determined when it is designed or produced, and is a fixed value.

[0086] The principle of step S305 is shown in Figure 5 In this embodiment, the smaller of the rated powers of the vehicle-mounted power supply and the vehicle-mounted electrical device is referred to as a first rated power, and the larger one is referred to as a second rated power. For example, referring to Figure 5 , it is assumed that the rated power of the vehicle-mounted electrical device (motor) is 100 kW, and the rated power of the vehicle-mounted power supply (power battery) is 100 kW. In this case, the rated power of the vehicle-mounted electrical device (motor) is the first rated power, and the rated power of the vehicle-mounted power supply (power battery) is the second rated power.

[0087] In the case where the first rated power is the rated power of the vehicle-mounted electrical device (motor), the vehicle-mounted electrical device corresponding to the first rated power is the vehicle-mounted electrical device (motor), and the working parameter of the vehicle-mounted electrical device corresponding to the first rated power is the electrical device working parameter. In step S305, the included angle between the electrical device working parameter unit vector and the steady-state change value is obtained, and a first included angle is obtained.

[0088] Specifically, the steady-state change value can be expressed as a vector (ΔTemperature1, ΔI1, ΔV1, ΔTemperature2, ΔI2, ΔV2, Δrpm, ΔT) (where the values ​​of each component have been normalized), and the unit vector of the electrical appliance operating parameter is the same as the first steady-state or the second steady-state, but the components of the electrical appliance operating parameters are set to 1 and the other components are set to 0. For example, for the first steady-state The components corresponding to the working parameters of the electrical appliances can be Replace T1 with 1 and other components with 0 to obtain the unit vector of the operating parameters of the electrical appliance (0, 0, 0, 1, 1, 1, 1). Based on the same principle, the unit vector of the operating parameters of the power supply (1, 1, 1, 0, 0, 0, 0) can also be obtained.

[0089] In step S305, the angle between the steady-state change value (ΔTemperature1, ΔI1, ΔV1, ΔTemperature2, ΔI2, ΔV2, Δrpm, ΔT) and the unit vector of the electrical appliance operating parameter (0, 0, 0, 1, 1, 1, 1, 1) is calculated to obtain a first angle θ1.

[0090] In step S305, the angle between the steady-state change value (ΔTemperature1, ΔI1, ΔV1, ΔTemperature2, ΔI2, ΔV2, Δrpm, ΔT) and the power supply operating parameter unit vector (1, 1, 1, 0, 0, 0, 0) can also be calculated to obtain a second angle θ2.

[0091] In step S305, the unit vector of the electrical appliance working parameters (0, 0, 0, 1, 1, 1, 1, 1) and the unit vector of the power supply working parameters (1, 1, 1, 0, 0, 0, 0, 0) are two mutually orthogonal vectors, which can be regarded as vectors on two coordinate axes. Therefore, the first angle θ1 is equivalent to the degree to which the steady-state change value deviates from the unit vector of the electrical appliance working parameters, and the second angle θ2 is equivalent to the degree to which the steady-state change value deviates from the unit vector of the power supply working parameters.

[0092] Reference Figure 5 In step S305, the increase range of the required power is determined in a positive correlation according to the first angle θ1. Specifically, the increase range of the required power can be directly determined in a positive correlation according to the size of the first angle θ1, that is, the larger the first angle θ1 is, the larger the increase range of the required power is; or, the increase range of the required power can be determined in a positive correlation according to the relative size of the first angle θ1 and the second angle θ2. The increase in the required power is determined in a positive correlation.

[0093] Reference Figure 5In step S305, the required power is increased within the second rated power range according to the increase amplitude, that is, the increased required power does not exceed the second rated power. The increased required power is used as the power supply power.

[0094] The principle of step S306 is as follows Figure 6 As shown. Figure 6 In part (a), if the required power is less than the first rated power or greater than the second rated power, the supplied power is set to the same size as the required power.

[0095] In this embodiment, the control unit adjusts the switching value of the switching device in itself so that the on-board power supply (power battery) outputs current to the on-board electrical appliances (motor) according to the power supply power determined in step S305 or S306, that is, the on-board electrical appliances (motor) also receive the power determined in step S305 or S306.

[0096] In this embodiment, the principle of executing steps S305-S306 is: Figure 6 As shown in part (a) of FIG, when the required power is less than the first rated power, that is, the required power is less than the rated power of both the on-board power supply (power battery) and the on-board electrical appliances (motor), the on-board power supply (power battery) and the on-board electrical appliances (motor) can both operate normally. Therefore, the power supply power is set according to the required power, thereby fully responding to the power demand event; Figure 5 As shown, when the required power is greater than the first rated power and less than the second rated power, it indicates that the required power exceeds the rated power of one of the on-board power supply (power battery) and the on-board electrical appliance (motor), but since the first rated power is not the rated power of the on-board electrical appliance (for example Figure 5 The maximum power of the vehicle electrical appliance (i.e., the motor) corresponds to the maximum power of the vehicle electrical appliance. Within the design redundancy range of the vehicle electrical appliance, it can still maintain operation for a certain period of time when it exceeds the first rated power to a certain extent, and the first angle θ1 represents the vehicle electrical appliance with a smaller rated power (e.g. Figure 5The contribution of the working parameter change to the steady-state change value (ΔTemperature1, ΔI1, ΔV1, ΔTemperature2, ΔI2, ΔV2, Δrpm, ΔT) after the on-board electrical appliance (i.e., the motor) switches from the first steady state to the second steady state is as follows: the larger the first angle θ1 is, the smaller the contribution of the working parameter change of the on-board electrical appliance with a smaller rated power to the steady-state change value (ΔTemperature1, ΔI1, ΔV1, ΔTemperature2, ΔI2, ΔV2, Δrpm, ΔT) is, that is, the on-board electrical appliance with a smaller rated power is less sensitive to the working parameter change, and a larger power supply power can be set for the on-board electrical appliance with a smaller rated power, that is, a larger increase range, thereby providing a larger margin for meeting the required power; and the increased power supply power is below the second rated power, that is, when the on-board electrical appliance with a larger rated power (e.g. Figure 5 The normal range of the vehicle power supply (i.e., the power battery) is ensured on the one hand to be within the normal operating range of the vehicle electrical appliance with the larger rated power, and on the other hand to set a limit on the increase in the required power to avoid excessive power supply; Figure 6 As shown in part (b), when the demand power is greater than the second rated power, that is, the demand power is greater than the rated power of both the on-board power supply (power battery) and the on-board electrical appliance (motor), it means that the power demand event may be an emergency event (for example, the driver slams on the accelerator to accelerate as quickly as possible). Therefore, the power supply power is set according to the size of the demand power to fully respond to the power demand event.

[0097] Therefore, by executing steps S305-S306, Figure 6 (a) shows the normal situation and Figure 6 (b) In the emergency situation, the power demand event can be fully responded to, while Figure 5 When the required power shown is greater than the rated power of one of the on-board electrical appliances, the required power can be appropriately increased within the range less than the rated power of the other on-board electrical appliance to determine the power supply power, thereby maintaining a certain margin between the power supply power and the required power within the acceptable range of the on-board electrical appliance with the smaller rated power, thereby meeting the needs of responding to power demand events.

[0098] In this embodiment, Figure 1 The power supply control system and / or Figure 2 The power supply and utilization system shown is installed on the car, making it a part of the car, so that the car as a whole has the functions of the power supply and utilization control system and the power supply and utilization system.

[0099] 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 relationship 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 present invention. The term "and / or" used in this embodiment includes any combination of one or more related listed items.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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 power supply control system for a car, characterized in that: The power supply and use control system for a vehicle includes: Control unit; the control unit is connected to the vehicle power supply and the vehicle electrical appliance, as part of the power supply circuit between the vehicle power supply and the vehicle electrical appliance; The control unit is used to detect the working parameters of the power supply and the working parameters of the electrical appliances, and control the power supplied by the on-board power supply to the on-board electrical appliances according to the working parameters of the power supply and the working parameters of the electrical appliances; wherein the working parameters of the power supply are the working parameters of the on-board power supply, and the working parameters of the electrical appliances are the working parameters of the on-board electrical appliances; The controlling the power supplied by the vehicle-mounted power supply to the vehicle-mounted electrical appliance according to the operating parameters of the power supply and the operating parameters of the electrical appliance includes: Determining that the operating parameters of the power supply and the operating parameters of the electrical appliance reach a first steady state in a first time period; the first steady state represents the values ​​of the operating parameters of the power supply and the electrical appliance when they reach stability within the first time period; Determining that the operating parameters of the power supply and the operating parameters of the electrical appliance reach a second steady state in a second time period; the second time period is a time period after the first time period; the second steady state represents the values ​​of the operating parameters of the power supply and the electrical appliance when they reach stability in the second time period; The power supply is adjusted according to the first steady state and the second steady state.

2. The power supply and utilization control system for a vehicle according to claim 1, characterized in that: The determining that the operating parameters of the power supply and the operating parameters of the electrical appliance reach a first steady state in a first time period includes: Taking the current time period as the first time period; In the first time period, the operating parameters of the power supply and the operating parameters of the electrical appliance are measured, and the first steady state is determined according to the measurement results.

3. The power supply and utilization control system for a vehicle according to claim 1, characterized in that: Determining that the operating parameters of the power supply and the operating parameters of the electrical appliance reach a second steady state in the second time period includes: During the first time period, detecting a power demand event; According to the power demand event, the values ​​of the power supply operating parameters and the electrical appliance operating parameters in the second time period are predicted, and the second steady state is determined according to the prediction result.

4. The power supply and utilization control system for a vehicle according to claim 3, characterized in that: The step of predicting values ​​of the power supply operating parameters and the electrical appliance operating parameters in the second time period according to the power demand event, and determining the second steady state according to the prediction results, includes: determining a time change value according to the first time period and the second time period; determining a steady-state change value according to the power demand event and the time change value; The second steady state is determined according to the first steady state and the steady state change value.

5. The power supply and utilization control system for a vehicle according to claim 3 or 4, characterized in that: The adjusting the power supply according to the first steady state and the second steady state includes: determining a steady-state change value according to the first steady state and the second steady state; determining a time change value according to the first time period and the second time period; determining a steady-state change rate according to the steady-state change value and the time change value; When the steady-state change rate is greater than a rate threshold, obtaining the required power required by the power demand event; When the required power is greater than the first rated power and less than the second rated power, the power supply power is determined according to the steady-state change value; wherein, the first rated power is the minimum value between the rated power of the on-board power supply and the rated power of the on-board electrical appliance, and the second rated power is the maximum value between the rated power of the on-board power supply and the rated power of the on-board electrical appliance.

6. The power supply and utilization control system for a vehicle according to claim 5, characterized in that: The determining the power supply power according to the steady-state change value includes: Obtaining a first angle; wherein the first angle is the angle between a unit vector of an operating parameter of the on-board electrical appliance corresponding to the first rated power and the steady-state change value; determining an increase range of the required power according to the first angle; wherein the increase range is positively correlated with the first angle; Within the range of the second rated power, increasing the required power according to the increase amplitude; The increased required power is determined as the supplied power.

7. The power supply and utilization control system for a vehicle according to claim 5, characterized in that: The adjusting the power supply according to the first steady state and the second steady state further includes: When the required power is less than the first rated power or greater than the second rated power, the required power is determined as the supply power.

8. A power supply system for a car, characterized in that: The power supply system for a vehicle comprises: The power supply and use control system for an automobile according to any one of claims 1 to 7; On-board power supply; Car electrical appliances.

9. An automobile, characterized in that: The car includes: The power supply and use control system for an automobile according to any one of claims 1 to 7; or The power supply system for an automobile as claimed in claim 8.

Images