Power battery power control method and device, vehicle and storage medium

Abstract

The present disclosure relates to a power battery power control method and device, a vehicle and a storage medium, comprising: acquiring actual state information of a power battery in a preset working time period; determining a working voltage of the power battery according to the actual state information; determining a working power of the power battery according to a preset current threshold and the working voltage of the power battery, the working power being a product of the working voltage and the preset current threshold, the preset current threshold being a maximum current allowed when the power battery is in a working state, and the working power being a power when the power battery is in the working state; determining a preset power as an allowable power of the power battery when the working power is greater than the preset power; determining the working power as the allowable power of the power battery when the working power is less than the preset power; and wherein the preset power is a power of the preset working time period to which the actual state information belongs, so as to ensure the service life and safety of the power battery.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle control technology, and in particular to a power battery power control method, device, vehicle, and storage medium. Background Technology

[0002] Permissible power is an important parameter of a power battery, which characterizes the maximum input and output power that the power battery can withstand.

[0003] To ensure the lifespan and operational safety of power batteries, existing technologies use a switching method to control the allowable power of power batteries. This involves adjusting the allowable power based on the battery's operating time. In this method, the allowable power output time is fixed. For example, if the allowable power is 100kW for 5 seconds, the allowable power is switched to 95kW after 5 seconds. However, while the battery is in the 100kW range, the allowable power remains fixed until the actual operating time reaches the set threshold (5 seconds). During this period, the battery voltage gradually decreases while the current increases. Therefore, the total current of the battery may exceed the safety limit before the power switches to 95kW (e.g., at the 4th second), leading to an overcurrent fault.

[0004] To ensure battery lifespan and operational safety, a power control strategy for power batteries is urgently needed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, or at least partially solve them, this disclosure provides a power battery power control method, apparatus, vehicle, and storage medium.

[0006] In a first aspect, embodiments of this disclosure provide a power battery power control method, including:

[0007] Obtain the actual status information of the power battery during a preset working period;

[0008] Determine the operating voltage of the power battery based on the actual status information;

[0009] The operating power of the power battery is determined based on the preset current threshold and the operating voltage. The operating power is the product of the operating voltage and the preset current threshold. The preset current threshold is the maximum allowable current when the power battery is in the operating state. The operating power is the power of the power battery when it is in the operating state.

[0010] When the operating power is greater than the preset power, the preset power is determined to be the allowable power of the power battery;

[0011] When the operating power is less than the preset power, the operating power is determined to be the allowable power of the power battery;

[0012] The preset power is the power of the power battery within a preset time period.

[0013] Optionally, the actual status information includes the actual voltage of the power battery during the preset working time period;

[0014] Determining the operating voltage of the power battery based on actual state information includes:

[0015] The operating voltage of the power battery is determined based on the actual voltage of the power battery during the preset operating time period. The actual voltage is the voltage of the power battery at different times during the preset operating time period, as collected by the voltage sensor.

[0016] Optionally, the actual status information includes the state of charge and temperature of the power battery during the previous preset working period.

[0017] Determining the operating voltage of the power battery based on actual state information includes:

[0018] Based on the state of charge and temperature of the power battery in the previous preset working period, the operating voltage of the power battery in the current preset working period is determined using a lookup table method.

[0019] Optionally, the actual status information includes the actual individual cell voltage of each cell during the preset operating time period;

[0020] Determining the operating voltage of the power battery based on actual state information includes:

[0021] The operating voltage of the power battery is determined based on the actual individual cell voltage and the number of individual cells included in the power battery. The operating voltage of the power battery is the product of the actual individual cell voltage and the number of individual cells.

[0022] Optionally, before determining the operating voltage of the power battery based on the actual single-cell voltage and the number of single-cell components of the power battery, the method further includes:

[0023] Determine the power control threshold of the power battery.

[0024] Optionally, the actual single-cell voltage includes the actual single-cell minimum voltage and the actual single-cell maximum voltage;

[0025] Determining the operating voltage of the power battery based on the actual individual cell voltage and the number of individual cells included in the power battery includes:

[0026] When the power control threshold of the power battery is greater than or equal to a preset threshold, the first operating voltage of the power battery is determined based on the actual highest voltage of a single cell and the number of single cells included in the power battery.

[0027] Optionally, the actual single-cell voltage includes the actual single-cell minimum voltage and the actual single-cell maximum voltage;

[0028] Determining the operating voltage of the power battery based on the actual individual cell voltage and the number of individual cells included in the power battery includes:

[0029] When the power control threshold of the power battery is less than the preset threshold, the second operating voltage of the power battery is determined based on the actual minimum voltage of a single cell and the number of single cells included in the power battery.

[0030] Secondly, embodiments of this disclosure provide a power battery power control device, comprising:

[0031] The information acquisition module is used to acquire the actual status information of the power battery during a preset working period.

[0032] The operating voltage determination module is used to determine the operating voltage of the power battery based on actual status information.

[0033] The working power determination module is used to determine the working power of the power battery based on the preset current threshold and the working voltage. The working power is the product of the working voltage and the preset current threshold. The preset current threshold is the maximum allowable current when the power battery is in the working state, and the working power is the power of the power battery when it is in the working state.

[0034] The first allowable power determination module is used to determine the preset power as the allowable power of the power battery when the operating power is greater than the preset power.

[0035] The second allowable power determination module is used to determine the working power as the allowable power of the power battery when the working power is less than the preset power.

[0036] The preset power is the power of the preset working time period to which the actual state information belongs.

[0037] Thirdly, embodiments of this disclosure provide a vehicle that includes any of the methods described in the first aspect.

[0038] Fourthly, embodiments of this disclosure provide a computer storage medium having a computer program stored thereon that, when executed by a processor, implements the methods described in any of the first aspects.

[0039] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0040] The power battery power control method, device, vehicle, and storage medium provided in this disclosure acquire actual state information of the power battery during a preset working time period; determine the working voltage of the power battery based on the actual state information; determine the working power of the power battery based on a preset current threshold and the working voltage, wherein the working power is the product of the working voltage and the preset current threshold, the preset current threshold being the maximum allowable current when the power battery is in the working state, and the working power being the power of the power battery when in the working state; when the working power is greater than the preset power, the preset power is determined as the allowable power of the power battery; when the working power is less than the preset power, the working power is determined as the allowable power of the power battery. Since the operating power of a power battery is determined based on its operating voltage and a preset current threshold (the maximum allowable current when the battery is in operation), the preset power is considered the allowable power when the operating power exceeds the preset power. Conversely, when the operating power is less than the preset power, the preset power is considered the allowable power. This means that when the operating power determined by the maximum allowable current and operating voltage is less than the preset power, the operating power is considered the allowable power, and the battery's operating current does not exceed the maximum allowable current. Similarly, when the operating power determined by the maximum allowable current and operating voltage exceeds the preset power, the preset power is considered the allowable power. This system helps prevent excessive battery current, which could negatively impact battery lifespan and safety. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0042] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1A This is a schematic flowchart of a power battery power control method provided in an embodiment of this disclosure;

[0044] Figure 1BThis is a schematic diagram illustrating the relationship between the power battery's time and power and the preset power, provided in an embodiment of this disclosure.

[0045] Figure 2 This is a schematic flowchart of another power battery power control method provided in this embodiment of the disclosure;

[0046] Figure 3 This is a schematic flowchart of another power battery power control method provided in the embodiments of this disclosure;

[0047] Figure 4 This is a schematic flowchart of another power battery power control method provided in the embodiments of this disclosure;

[0048] Figure 5 This is a schematic flowchart of another power battery power control method provided in the embodiments of this disclosure;

[0049] Figure 6 This is a schematic flowchart of another power battery power control method provided in the embodiments of this disclosure;

[0050] Figure 7 This is a schematic diagram of the structure of a power battery power control device provided in an embodiment of this disclosure;

[0051] Figure 8 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this disclosure. Detailed Implementation

[0052] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0053] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0054] To address the problems existing in the prior art, this disclosure provides a power battery power control method, comprising: acquiring actual state information of the power battery during a preset working time period; determining the working voltage of the power battery based on the actual state information; determining the working power of the power battery based on a preset current threshold and the working voltage, wherein the working power is the product of the working voltage and the preset current threshold, the preset current threshold being the maximum allowable current when the power battery is in the working state, and the working power being the power of the power battery when in the working state; determining the preset power as the allowable power of the power battery when the working power is greater than the preset power; and determining the working power as the allowable power of the power battery when the working power is less than the preset power. Since the operating power of a power battery is determined based on its operating voltage and a preset current threshold (the maximum allowable current when the battery is in operation), the preset power is considered the allowable power when the operating power exceeds the preset power. Conversely, when the operating power is less than the preset power, the preset power is considered the allowable power. This means that when the operating power determined by the maximum allowable current and operating voltage is less than the preset power, the operating power is considered the allowable power, and the battery's operating current does not exceed the maximum allowable current. Similarly, when the operating power determined by the maximum allowable current and operating voltage exceeds the preset power, the preset power is considered the allowable power. This system helps prevent excessive battery current, which could negatively impact battery lifespan and safety.

[0055] The power battery power control method provided in this disclosure is executed by a terminal device. The terminal device may be a tablet computer, mobile phone, wearable device, vehicle-mounted device, augmented reality (AR) / virtual reality (VR) device, laptop computer, ultra-mobile personal computer (UMPC), netbook, personal digital assistant (PDA), smart TV, smart screen, high-definition TV, 4K TV, smart speaker, smart projector, etc. This disclosure does not impose any restrictions on the specific type of terminal device.

[0056] This disclosure does not limit the type of operating system for the terminal device. For example, Android, Linux, Windows, iOS, etc.

[0057] The technical solutions of this disclosure are described in detail below with reference to several specific embodiments.

[0058] Figure 1A This is a flowchart illustrating a power battery power control method provided in this disclosure, as shown below. Figure 1A As shown, the method in this embodiment is as follows:

[0059] S10. Obtain the actual status information of the power battery during the preset working period.

[0060] The actual state information of a power battery refers to the voltage, current, temperature, and operating time of the power battery under actual working conditions.

[0061] The preset working time period refers to a specific time period during which the power battery is in operation. The preset power of the power battery varies depending on the working duration. For example, the working time period of the power battery can be divided into 0-5S, 5S-10S, 10S-40S, and 40S-100S. Here, 0-5S is one working time period of the power battery, and 5S-10S is another working time period of the power battery. The actual state information of the power battery is different in different working time periods.

[0062] S20. Determine the operating voltage of the power battery based on the actual status information.

[0063] S30. Determine the operating power of the power battery based on the preset current threshold and operating voltage of the power battery.

[0064] The operating power is the product of the operating voltage and the preset current threshold. The preset current threshold is the maximum allowable current when the power battery is in the working state. The operating power is the power of the power battery when it is in the working state. When the current of the power battery in the working state is greater than the preset current threshold, it indicates that there is a safety hazard in the power battery under this state. Moreover, if the power battery is in this state for a long time, its service life will be gradually shortened.

[0065] Once the actual state information of the power battery during a preset time period is obtained, the operating power of the power battery can be determined based on the obtained actual state information of the power battery during the preset time period and the preset current of the power battery.

[0066] Specifically, power can be calculated using a method such as P = UI, where U represents the operating voltage of the power battery, I represents the operating current of the power battery, I can be selected from the preset current threshold of the power battery, and U can be determined based on the operating voltage of the power battery when it is in operation.

[0067] In other possible implementations, the operating voltage U of the power battery can also be determined based on the data of the power battery at the previous moment. This disclosure does not specifically limit this aspect.

[0068] S401. When the working power is greater than the preset power, the preset power is determined to be the allowable power of the power battery.

[0069] S402. When the operating power is less than the preset power, the operating power is determined to be the allowable power of the power battery.

[0070] The preset power refers to the power of the power battery within a preset time period in step S10. The preset power of the power battery is different in different preset working time periods.

[0071] The preset power of the power battery for different working periods is set in advance. When the power battery is in working state, the preset working period of the power battery can be determined based on the working time of the power battery, and the preset power of the power battery within the preset working period can be obtained.

[0072] It should be noted that the above embodiments exemplify a method for dividing the working time of a power battery, and the embodiments disclosed herein do not specifically limit the method for dividing the working time of a power battery.

[0073] Once the operating power of the power battery and the preset power within the preset operating time period to which the actual state information belongs are determined, the allowable power of the power battery is determined based on the relationship between the operating power and the preset power.

[0074] Specifically, the preset power of the power battery is a control strategy for the allowable power of the power battery set by those skilled in the art. That is, the preset power of the power battery is different in different preset working time periods. After obtaining the actual state information of the power battery, the working power of the power battery is determined based on the actual state information of the power battery and the preset current threshold of the power battery. That is, the working power is the product of the working voltage of the power battery and the preset current threshold. Based on the relationship between the preset power and the preset power of the preset working time period to which the actual state information belongs, the allowable power of the power battery is determined. This can avoid the situation where the voltage of the power battery gradually decreases and the current gradually increases during the working process due to the direct use of existing technical solutions. That is, directly using the preset power as the allowable power of the power battery will result in excessive power battery current, which will affect the safety of the power battery.

[0075] For example, the actual state information of the power battery at different times during the 0-5S working period is obtained, and then the preset power of the power battery during the preset working period of 0-5S is obtained. Based on the obtained time state information of the power battery at different times during the 0-5S working period and the preset current threshold of the power battery, the working power of the power battery at different times during the 0-5S working period can be determined. By comparing the relationship between the working power of the power battery at different times during the 0-5S working period and the preset power, the allowable power of the power battery is determined.

[0076] It should be noted that the above implementation example indicates that the allowable power of the power battery is determined within the 0-5S working time period. Similarly, the allowable power of the power battery within the 5S-15S, 15S-45S, and 45S-100S working time periods is determined based on the above method.

[0077] In a specific implementation, after determining the operating power and the preset power, the required power of the power battery is determined based on the relationship between the preset power and the allowable power, combined with... Figure 1B , Figure 1B In Table 1B, the solid thick line represents the preset power of the power battery based on the slicing table method in different preset working time periods, and the dashed thick line represents the working power of the power battery determined based on the preset current threshold and actual state information. As shown in Table 1B, within the preset working time period of 15S to 45S, the preset power of the power battery is less than the working power determined based on the preset current threshold and actual state information in the working time period corresponding to point AB. However, the preset power of the power battery is greater than the working power determined based on the preset current threshold and actual state information in the working time period corresponding to point BC. Since the working power is determined based on the preset current threshold and the actual state of the power battery, if the preset power is used as the allowable power of the power battery in the working time period corresponding to BC, the total current of the power battery will exceed the safety limit due to the gradual decrease in power battery voltage and the continuous increase in current, thus affecting the safety of the power battery. The embodiments of this disclosure determine the allowable power of the power battery by comparing the relationship between the preset power and the working power, thereby ensuring the safety of the power battery.

[0078] The power battery power control method provided in this disclosure acquires the actual state information of the power battery during a preset working time period; determines the working voltage of the power battery based on the actual state information; determines the working power of the power battery based on a preset current threshold and the working voltage, wherein the working power is the product of the working voltage and the preset current threshold, the preset current threshold is the maximum allowable current when the power battery is in the working state, and the working power is the power of the power battery when it is in the working state; when the working power is greater than the preset power, the preset power is determined as the allowable power of the power battery; when the working power is less than the preset power, the working power is determined as the allowable power of the power battery. Since the operating power of a power battery is determined based on its operating voltage and a preset current threshold (the maximum allowable current when the battery is in operation), the preset power is considered the allowable power when the operating power exceeds the preset power. Conversely, when the operating power is less than the preset power, the preset power is considered the allowable power. This means that when the operating power determined by the maximum allowable current and operating voltage is less than the preset power, the operating power is considered the allowable power, and the battery's operating current does not exceed the maximum allowable current. Similarly, when the operating power determined by the maximum allowable current and operating voltage exceeds the preset power, the preset power is considered the allowable power. This system helps prevent excessive battery current, which could negatively impact battery lifespan and safety.

[0079] Figure 2 This is a schematic flowchart of another power battery power control method provided in this disclosure embodiment. This disclosure embodiment is based on the above embodiment, such as... Figure 2 As shown, one possible implementation of step S20 includes:

[0080] S21. Determine the operating voltage of the power battery based on the actual voltage of the power battery during the preset operating period.

[0081] As one possible implementation, the acquired time state information of the power battery includes the actual voltage of the power battery, and the operating voltage of the power battery can be determined based on the acquired actual voltage of the power battery.

[0082] Specifically, the actual voltage of the power battery is the voltage of the power battery at different times within the preset working time period, as collected by the voltage sensor.

[0083] Since the actual voltage of the power battery is the operating voltage, the operating power of the power battery can be determined based on the relationship between current, voltage and power, i.e., P=UI, after the actual voltage of the power battery is collected.

[0084] Figure 2This disclosure provides a method for determining the operating power of a power battery based on a preset current threshold and operating voltage. The following embodiments will illustrate other methods for determining the operating power of a power battery. Figure 3 or Figure 4 As shown.

[0085] Figure 3 This is a flowchart illustrating another power battery power control method provided in this disclosure. This disclosure is based on the above embodiments, such as... Figure 3 As shown, another possible implementation of step S20 includes:

[0086] S23. Based on the state of charge and temperature of the power battery in the previous preset working period, determine the working voltage of the power battery in the current preset working period using a lookup table method.

[0087] As another possible implementation method, the actual state information of the power battery obtained includes the state of charge and temperature of the power battery in the previous preset working period, and the working voltage of the power battery can be determined based on the obtained state of charge and temperature of the power battery in the previous preset working period.

[0088] Specifically, there is a corresponding correlation between the operating voltage of the power battery in the current preset working time period and parameters such as the state of charge and temperature of the power battery in the previous preset working time period. Therefore, the operating voltage of the power battery in the current preset working time period can be preset based on the obtained parameters such as the state of charge and temperature of the power battery in the previous preset working time period.

[0089] In a specific implementation, since the preset working time period includes a time interval, the working voltage of the power battery at different times in the current preset time period can be determined based on the state of charge and temperature parameters at different times in the previous preset working time period.

[0090] Once the operating voltage of the power battery is determined, the operating power of the power battery can be determined based on the relationship between a preset current threshold and the operating voltage. Specifically, the method for determining the operating power of the power battery based on the relationship between the preset current threshold and the operating voltage is as follows: Figure 2 The implementation methods of the corresponding embodiments are the same, and no examples will be given here.

[0091] Figure 4 This is a flowchart illustrating another power battery power control method provided in this disclosure. This disclosure is based on the above embodiments, such as... Figure 4 As shown, another specific implementation of step S20 includes:

[0092] S26. Determine the operating voltage of the power battery based on the actual individual cell voltage and the number of individual cells included in the power battery.

[0093] As another possible implementation method, the actual state information of the power battery obtained includes the actual single cell voltage of each cell within a preset working time period, and the working voltage of the power battery can be determined based on the actual single cell voltage of each cell within the preset working time period.

[0094] The power battery comprises multiple individual cells, which are connected in series. After obtaining the actual individual cell voltage within a preset operating time period, the operating voltage of the power battery can be determined based on the actual individual cell voltage and the number of individual cells in the power battery. For example, after obtaining the actual individual cell voltage, the product of the actual individual cell voltage and the number of individual cells is the operating voltage of the power battery.

[0095] Once the operating voltage of the power battery is determined, the operating power of the power battery can be determined based on the relationship between a preset current threshold and the operating voltage. The method for determining the operating power of the power battery based on the relationship between the preset current threshold and the operating voltage is as follows: Figure 2 The implementation methods of the corresponding embodiments are the same, and no examples will be given here.

[0096] Figure 5 This is a schematic flowchart of another power battery power control method provided in this disclosure embodiment. This disclosure embodiment is... Figure 4 Based on the corresponding embodiments, such as Figure 5 As shown, the procedure before step S26 also includes:

[0097] S25. Determine the power control threshold of the power battery.

[0098] In specific implementations, due to slight process errors in the manufacturing of each individual cell voltage, there will be inconsistencies in the operating voltage of each individual cell. When the operating voltages of each individual cell are inconsistent, the operating voltage of the power battery determined based on the product of the actual individual cell voltage and the number of individual cells will have a certain error, and some individual cells may fail due to excessive current. Based on this, the power battery power control method provided in this disclosure first determines the power battery power control threshold. The power control threshold reflects the degree of protection for the power battery. The smaller the power control threshold, the better the protection for the power battery; the larger the power control threshold, the worse the protection for the power battery.

[0099] The following will introduce a method for determining the operating power of a power battery based on a power control threshold through specific embodiments.

[0100] When the power battery power control method includes step S25, one possible implementation of step S26 includes:

[0101] S261. When the power control threshold of the power battery is greater than or equal to the preset threshold, the first operating voltage of the power battery is determined based on the actual highest voltage of a single cell and the number of single cells included in the power battery.

[0102] When the service life of the power battery is relatively short, the overall performance of the power battery is good, and the difference between individual cells in the power battery is small. Therefore, the power control threshold of the power battery can be set to be greater than or equal to the preset threshold. At this time, the first working voltage of the power battery can be determined according to the actual highest voltage of the individual cells and the number of individual cells included in the power battery.

[0103] Once the first operating voltage of the power battery is determined, the operating power of the power battery is determined based on the preset current threshold and the first operating voltage.

[0104] When the power battery power control method includes step S25, another possible implementation of step S26 is described below. Figure 6 ,like Figure 6 As shown, it includes:

[0105] S262. When the power control threshold of the power battery is less than the preset threshold, the second operating voltage of the power battery is determined based on the actual minimum voltage of a single cell and the number of single cells included in the power battery.

[0106] When the service life of a power battery is relatively short, the overall performance of the power battery changes significantly, and there are large differences between individual cells in the power battery, in order to avoid overcurrent faults caused by excessive current in a single cell, the power control threshold of the power battery can be set to be lower than a preset threshold. In this case, the second operating voltage of the power battery can be determined based on the actual minimum voltage of a single cell and the number of cells included in the power battery.

[0107] Once the second operating voltage of the power battery is determined, the operating power of the power battery is determined based on the preset current threshold and the second operating voltage.

[0108] It should be noted that the above embodiments exemplify two methods for determining the operating power of a power battery. The power control threshold of the power battery can be based on a user-defined setting in advance. When the user does not set the power control threshold of the power battery, the sum of the voltages corresponding to each individual battery cell can be used as the operating voltage of the power battery.

[0109] Figure 7 This is a schematic diagram of the structure of a power battery power control device provided in an embodiment of this disclosure, as shown below. Figure 7As shown, the power battery power control device includes:

[0110] The information acquisition module 710 is used to acquire the actual state information of the power battery when the working power is greater than the preset power, and when the working power is less ...

[0111] The working voltage determination module 720 is used to determine the working voltage of the power battery based on actual status information.

[0112] The working power determination module 730 is used to determine the working power of the power battery based on the preset current threshold and the working voltage of the power battery. The working power is the product of the working voltage and the preset current threshold. The preset current threshold is the maximum allowable current when the power battery is in the working state, and the working power is the power of the power battery when it is in the working state.

[0113] The first allowable power determination module 740 is used to determine the preset power as the allowable power of the power battery when the working power is greater than the preset power.

[0114] The second allowable power determination module 750 is used to determine the working power as the allowable power of the power battery when the working power is less than the preset power.

[0115] The preset power is the power of the preset working time period to which the actual status information belongs.

[0116] The power battery power control device provided in this embodiment determines the operating power of the power battery based on its operating voltage and a preset current threshold. The preset current threshold is the maximum allowable current when the power battery is in operation. When the operating power is greater than the preset power, the preset power is determined as the allowable power of the power battery; when the operating power is less than the preset power, the operating power is determined as the allowable power of the power battery. That is, when the operating power determined based on the maximum allowable current and the operating voltage of the power battery is less than the preset power, the operating power is the allowable power of the power battery, and the operating current of the power battery does not exceed the maximum allowable current. When the operating power determined based on the maximum allowable current and the operating voltage of the power battery is greater than the preset power, the preset power is the allowable power of the power battery. This can prevent the power battery current from being too high, thereby affecting the battery's service life and safety.

[0117] Optionally, one possible implementation of the operating voltage determination module includes:

[0118] The operating voltage of the power battery is determined based on the actual voltage of the power battery during a preset operating period. The actual voltage is the voltage of the power battery at different times during the preset operating period, as collected by the voltage sensor.

[0119] Optionally, another possible implementation of the operating voltage determination module includes:

[0120] Based on the state of charge of the power battery in the previous preset working period and the temperature, the working voltage of the power battery in the current preset working period is determined by a lookup table method.

[0121] Alternatively, another possible implementation of the operating voltage determination module includes:

[0122] The operating voltage of the power battery is determined based on the actual voltage of each individual cell and the number of individual cells included in the power battery. The operating voltage of the power battery is the product of the actual voltage of each individual cell and the number of individual cells.

[0123] Optional, also includes:

[0124] The power control threshold determination module is used to determine the power control threshold of the power battery.

[0125] Optionally, the operating voltage of the power battery is determined based on the actual individual cell voltage and the number of individual cells included in the power battery, including:

[0126] When the power control threshold of the power battery is greater than or equal to the preset threshold, the first operating voltage of the power battery is determined based on the actual highest voltage of a single cell and the number of single cells included in the power battery.

[0127] Optionally, the operating voltage of the power battery is determined based on the actual individual cell voltage and the number of individual cells included in the power battery, including:

[0128] When the power control threshold of the power battery is less than the preset threshold, the second operating voltage of the power battery is determined based on the actual minimum voltage of a single cell and the number of single cells included in the power battery.

[0129] The apparatus provided in the embodiments of the present invention can execute the methods provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the methods.

[0130] It is worth noting that in the embodiments of the above-mentioned device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are only for easy distinction between each other and are not used to limit the scope of protection of the present invention.

[0131] This disclosure also provides an electronic device, including: a processor, the processor being configured to execute a computer program stored in a memory, the computer program being executed by the processor to implement the steps of the above method embodiments.

[0132] Figure 8 This is a schematic diagram of the structure of an electronic device provided in this disclosure. Figure 8 A block diagram is shown that is suitable for implementing embodiments of the present invention. Figure 8 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of the present invention.

[0133] like Figure 8 As shown, the electronic device 800 is presented in the form of a general-purpose computing device. The components of the electronic device 800 may include, but are not limited to: one or more processors 810, system memory 820, and bus 830 connecting different system components (including system memory 820 and processors).

[0134] Bus 830 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. Examples of these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0135] Electronic device 800 typically includes a variety of computer system readable media. These media can be any media that can be accessed by electronic device 800, including volatile and non-volatile media, removable and non-removable media.

[0136] System memory 820 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 840 and / or cache memory 850. Electronic device 800 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 860 may be used to read and write non-removable, non-volatile magnetic media (commonly referred to as a "hard disk drive"). Disk drives for reading and writing to removable non-volatile disks (e.g., "floppy disks") and optical disk drives for reading and writing to removable non-volatile optical disks (e.g., CD-ROMs, DVD-ROMs, or other optical media) may be provided. In these cases, each drive may be connected to bus 830 via one or more data media interfaces. System memory 820 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of various embodiments of the present invention.

[0137] A program / utility 880 having a set (at least one) of program modules 870 may be stored, for example, in system memory 820. Such program modules 870 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 870 typically perform the functions and / or methods described in the embodiments of this invention.

[0138] The processor 810 executes various functional applications and information processing by running at least one of a plurality of programs stored in the system memory 820, such as implementing the method embodiments provided in the embodiments of the present invention.

[0139] This disclosure also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described method embodiments.

[0140] Any combination of one or more computer-readable media may be used. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device.

[0141] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0142] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0143] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or wide area network (WAN) domain—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0144] This disclosure also provides a vehicle including an in-vehicle system for performing the steps of the above-described method embodiments.

[0145] This disclosure also provides a computer program product that, when run on a computer, causes the computer to perform the steps of the above-described method embodiments.

[0146] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0147] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power battery power control method, characterized in that, include: Obtain the actual status information of the power battery during a preset working period; Determine the operating voltage of the power battery based on the actual status information; The operating power of the power battery is determined based on the preset current threshold and the operating voltage. The operating power is the product of the operating voltage and the preset current threshold. The preset current threshold is the maximum allowable current when the power battery is in the operating state. The operating power is the power of the power battery when it is in the operating state. When the operating power is greater than the preset power, the preset power is determined to be the allowable power of the power battery; When the operating power is less than the preset power, the operating power is determined to be the allowable power of the power battery; Wherein, the preset power is the power of the power battery during the preset working time period to which the actual state information belongs; The actual status information includes: the actual voltage of the power battery during the preset working time period, or the state of charge and temperature of the power battery during the previous preset working time period, or the actual single-cell voltage of each individual cell during the preset working time period, wherein the power battery includes multiple individual cells.

2. The method according to claim 1, characterized in that, When the actual state information includes the actual voltage of the power battery during the preset operating time period, determining the operating voltage of the power battery based on the actual state information includes: The operating voltage of the power battery is determined based on the actual voltage of the power battery during the preset operating time period. The actual voltage is the voltage of the power battery at different times during the preset operating time period, as collected by the voltage sensor.

3. The method according to claim 1, characterized in that, When the actual state information includes the state of charge and temperature of the power battery during a previous preset operating period, determining the operating voltage of the power battery based on the actual state information includes: Based on the state of charge and temperature of the power battery in the previous preset working period, the operating voltage of the power battery in the current preset working period is determined using a lookup table method.

4. The method according to claim 1, characterized in that, When the actual state information includes the actual individual cell voltage of each battery cell within the preset working time period, determining the working voltage of the power battery based on the actual state information includes: The operating voltage of the power battery is determined based on the actual individual cell voltage and the number of individual cells included in the power battery. The operating voltage of the power battery is the product of the actual individual cell voltage and the number of individual cells.

5. The method according to claim 4, characterized in that, Before determining the operating voltage of the power battery based on the actual single-cell voltage and the number of single-cell components of the power battery, the method further includes: Determine the power control threshold of the power battery.

6. The method according to claim 5, characterized in that, The actual cell voltage includes the actual cell minimum voltage and the actual cell maximum voltage; Determining the operating voltage of the power battery based on the actual individual cell voltage and the number of individual cells included in the power battery includes: When the power control threshold of the power battery is greater than or equal to a preset threshold, the first operating voltage of the power battery is determined based on the actual highest voltage of a single cell and the number of single cells included in the power battery.

7. The method according to claim 5, characterized in that, The actual cell voltage includes the actual cell minimum voltage and the actual cell maximum voltage; Determining the operating voltage of the power battery based on the actual individual cell voltage and the number of individual cells included in the power battery includes: When the power control threshold of the power battery is less than the preset threshold, the second operating voltage of the power battery is determined based on the actual minimum voltage of a single cell and the number of single cells included in the power battery.

8. A power battery power control device, characterized in that, include: The information acquisition module is used to acquire the actual status information of the power battery during a preset working period. The operating voltage determination module is used to determine the operating voltage of the power battery based on actual status information. The working power determination module is used to determine the working power of the power battery based on the preset current threshold and the working voltage. The working power is the product of the working voltage and the preset current threshold. The preset current threshold is the maximum allowable current when the power battery is in the working state, and the working power is the power of the power battery when it is in the working state. The first allowable power determination module is used to determine the preset power as the allowable power of the power battery when the operating power is greater than the preset power. The second allowable power determination module is used to determine the working power as the allowable power of the power battery when the working power is less than the preset power. Wherein, the preset power is the power of the power battery during the preset working time period to which the actual state information belongs; The actual status information includes: the actual voltage of the power battery during the preset working time period, or the state of charge and temperature of the power battery during the previous preset working time period, or the actual single-cell voltage of each individual cell during the preset working time period, wherein the power battery includes multiple individual cells.

9. A vehicle, characterized in that, The method described in any one of claims 1 to 7 shall be applied.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1 to 7.

Images