Vehicle battery operation control method and device, equipment and medium

Abstract

The invention discloses a vehicle battery operation control method, device and equipment and a medium, when a vehicle is in an energy recovery state, the battery cell voltage of a battery of the vehicle is detected, and whether the battery cell voltage has an overvoltage risk or not is judged; when it is determined that the battery cell voltage has the overvoltage risk, the battery cell temperature and the power integral value of the current battery are obtained, and the target negative duration corresponding to the battery is determined according to at least one of the battery cell voltage, the battery cell temperature or the power integral value; the recovery power of vehicle energy recovery is adjusted to be 0; and when the duration in which the recovery power is adjusted to be 0 reaches the target negative duration, the recovery power of vehicle energy recovery is adjusted to be preset power, and the step of detecting the battery cell voltage of the battery of the vehicle is executed again. The safety and stability of the battery during energy recovery can be improved, and the service life of the vehicle battery is prolonged. The method can be widely applied to the technical field of vehicles.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular, to a method, device, equipment and medium for controlling the operation of a vehicle battery. Background Art

[0002] Vehicles are the main means of transportation in modern society and are widely used in daily commuting, long-distance travel and cargo transportation. Currently, new energy vehicles that mainly consume electrical energy are increasingly being promoted. In new energy vehicles, there is an application of energy recovery. Energy recovery (also known as regenerative braking or feedback braking) is a technology that converts the kinetic energy of a vehicle during deceleration into electrical energy and stores it back into the battery. For example, when the vehicle decelerates or brakes, the electric motor will switch to the generator mode, converting the mechanical energy of the rotating wheels into electrical energy, and the generated electrical energy is charged back to the battery. In this way, the energy utilization efficiency of the vehicle can be improved.

[0003] In the related art, when the vehicle is in the energy recovery state, generally, charging operations are performed on the battery at a fixed power. However, this implementation does not consider the possible passivation problem of the battery cells. For example, when the vehicle is in a long-term charging state (such as energy recovery during continuous downhill) or overcharging (such as energy recovery during emergency braking when the battery is full), it will cause the voltage of the battery cells to be too high, which may cause the active materials (such as positive and negative electrode materials) inside to lose their activity due to certain chemical reactions or physical changes, resulting in a gradual decrease in the battery capacity, efficiency or power output ability, and affecting the service life of the vehicle battery.

[0004] In summary, the problems existing in the related art need to be solved urgently. Summary of the Invention

[0005] The purpose of the present application is to solve at least to some extent one of the technical problems existing in the related art.

[0006] To this end, an object of an embodiment of the present application is to provide a method, device, equipment and medium for controlling the operation of a vehicle battery.

[0007] To achieve the above technical purpose, the technical solutions adopted in the embodiments of the present application include:

[0008] On the one hand, an embodiment of the present application provides a method for controlling the operation of a vehicle battery, and the method includes:

[0009] When the vehicle is in the energy recovery state, detect the voltage of the battery cells of the vehicle and determine whether there is an overvoltage risk for the cell voltage;

[0010] When it is determined that there is an overvoltage risk in the cell voltage, obtain the cell temperature and the power integration value of the battery at present, and determine the target deactivation duration corresponding to the battery according to at least one of the cell voltage, the cell temperature, or the power integration value;

[0011] Adjust the recovery power of the vehicle energy recovery to 0;

[0012] When the duration of adjusting the recovery power to 0 in this time reaches the target deactivation duration, adjust the recovery power of the vehicle energy recovery to a predetermined power, and return to execute the step of detecting the cell voltage of the battery of the vehicle.

[0013] In addition, according to the battery operation control method of the vehicle in the above embodiments of the present application, the following additional technical features may also be included:

[0014] Further, in an embodiment of the present application, the determining whether there is an overvoltage risk in the cell voltage includes:

[0015] Obtain a preset voltage threshold and a time threshold;

[0016] Detect whether the cell voltage is greater than the voltage threshold;

[0017] If the cell voltage is greater than the voltage threshold, count the cumulative duration of the cell voltage continuously being greater than the voltage threshold;

[0018] If the cumulative duration is greater than the time threshold, determine that there is an overvoltage risk in the cell voltage.

[0019] Further, in an embodiment of the present application, obtaining the power integration value of the battery at present includes:

[0020] Obtain the power curve data of the vehicle in the state of energy recovery this time;

[0021] Determine the power integration value of the battery at present according to the power curve data.

[0022] Further, in an embodiment of the present application, the determining the target deactivation duration corresponding to the battery according to at least one of the cell voltage, the cell temperature, or the power integration value includes:

[0023] Obtain the reference deactivation duration corresponding to the battery;

[0024] Determine the first reference deactivation duration according to the cell voltage;

[0025] Determine the second reference deactivation duration according to the cell temperature;

[0026] Determine a third reference deactivation duration according to the power integration value;

[0027] Accumulate at least one of the first reference deactivation duration, the second reference deactivation duration, and the third reference deactivation duration on the basis deactivation duration to obtain the target deactivation duration corresponding to the battery.

[0028] Further, in an embodiment of the present application, the determining the first reference deactivation duration according to the cell voltage includes:

[0029] Detect the peak voltage in the period when the cell voltage is continuously greater than the voltage threshold;

[0030] Calculate the difference between the peak voltage and the voltage threshold to obtain a voltage parameter;

[0031] Determine the first reference deactivation duration according to the product of the voltage parameter and a preset proportional parameter.

[0032] Further, in an embodiment of the present application, the adjusting the recovery power of the vehicle energy recovery to a predetermined power includes:

[0033] Display a plurality of recommended recovery levels of energy recovery to the driver of the vehicle;

[0034] Determine the predetermined power according to the selected recovery level of the driver;

[0035] Adjust the recovery power of the vehicle energy recovery to the predetermined power.

[0036] Further, in an embodiment of the present application, the displaying a plurality of recommended recovery levels of energy recovery to the driver of the vehicle includes:

[0037] Determine a plurality of recommended recovery levels of energy recovery according to the previously determined target deactivation duration;

[0038] Display a plurality of the recommended recovery levels to the driver of the vehicle.

[0039] On the other hand, an embodiment of the present application provides a battery operation control device for a vehicle, the device includes:

[0040] A detection unit, configured to detect the cell voltage of the battery of the vehicle and determine whether there is an overvoltage risk when the vehicle is in an energy recovery state;

[0041] A processing unit, configured to obtain the cell temperature and the power integral value of the current battery when it is determined that there is an overvoltage risk in the cell voltage, and determine the target passivation duration corresponding to the battery according to at least one of the cell voltage, the cell temperature or the power integral value;

[0042] An adjustment unit, configured to adjust the recovery power of the vehicle energy recovery to 0;

[0043] A loop unit, configured to, when the duration of adjusting the recovery power to 0 this time reaches the target passivation duration, adjust the recovery power of the vehicle energy recovery to a predetermined power, and return to execute the step of detecting the cell voltage of the battery of the vehicle.

[0044] On the other hand, an embodiment of the present application provides an electronic device, including:

[0045] At least one processor;

[0046] At least one memory, configured to store at least one program;

[0047] When the at least one program is executed by the at least one processor, the at least one processor is caused to implement the above-mentioned battery operation control method of the vehicle.

[0048] On the other hand, an embodiment of the present application further provides a computer-readable storage medium, in which a program executable by a processor is stored, and the program executable by the processor is used to implement the above-mentioned battery operation control method of the vehicle when executed by the processor.

[0049] The advantages and beneficial effects of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application:

[0050] A method, device, equipment and medium for controlling the operation of a vehicle battery according to an embodiment of the present application. When the vehicle is in an energy recovery state, the cell voltage of the vehicle battery is detected, and it is determined whether there is an overvoltage risk for the cell voltage. When it is determined that there is an overvoltage risk for the cell voltage, the cell temperature and power integral value of the current battery are obtained, and the target passivation duration corresponding to the battery is determined according to at least one of the cell voltage, the cell temperature or the power integral value. The recovery power of the vehicle energy recovery is adjusted to 0. When the duration of adjusting the recovery power to 0 this time reaches the target passivation duration, the recovery power of the vehicle energy recovery is adjusted to a predetermined power, and the step of detecting the cell voltage of the vehicle battery is returned to be executed. The method in the embodiment of the present application can dynamically determine the passivation duration of the vehicle battery, limit the recovery power according to the passivation duration, thereby improving the safety and stability of the battery during energy recovery, reducing the probability of overcharging, and being beneficial to extending the service life of the vehicle battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following introduces the related technical solution drawings in the embodiments of the present application or the prior art. It should be understood that the drawings introduced below are only for conveniently and clearly expressing some embodiments of the technical solutions in the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0052] Figure 1 It is a schematic diagram of the implementation environment of a method for controlling the operation of a vehicle battery provided in an embodiment of the present application;

[0053] Figure 2 It is a schematic flowchart of a method for controlling the operation of a vehicle battery provided in an embodiment of the present application;

[0054] Figure 3 It is a schematic structural diagram of a device for controlling the operation of a vehicle battery provided in an embodiment of the present application;

[0055] Figure 4 It is a schematic structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0056] The present application will be further described below in conjunction with the accompanying drawings of the specification and specific embodiments. The described embodiments should not be regarded as limitations of the present application. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0057] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments. It is understood, however, that "some embodiments" may be the same subset or a different subset of all possible embodiments, and may be combined with each other without conflict.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein are for the purpose of describing embodiments of this application only and are not intended to limit this application.

[0059] Vehicles are the main means of transportation in modern society and are widely used in daily commuting, long-distance travel, and cargo transportation. Currently, new energy vehicles that mainly consume electrical energy are increasingly being promoted. In new energy vehicles, there is an application of energy recovery. Energy recovery (also known as regenerative braking or feedback braking) is a technology that converts the kinetic energy generated when a vehicle decelerates into electrical energy and stores it back into the battery. For example, when the vehicle decelerates or brakes, the electric motor switches to the generator mode, converting the mechanical energy of the rotating wheels into electrical energy, and the generated electrical energy is recharged into the battery. In this way, the energy utilization efficiency of the vehicle can be improved.

[0060] In the related art, when the vehicle is in the energy recovery state, the battery is generally charged at a fixed power. However, this implementation does not consider the possible problem of battery cell passivation. For example, when the vehicle is in a long-term charging state (such as energy recovery during continuous downhill) or overcharging (such as energy recovery during emergency braking when the battery is full), the voltage of the battery cells will be too high, which may cause the active materials (such as the positive and negative electrode materials) inside to lose their activity due to certain chemical reactions or physical changes, resulting in a gradual decrease in the battery capacity, efficiency, or power output ability, and affecting the service life of the vehicle battery.

[0061] In view of this, in the embodiments of the present application, a method for controlling the operation of a vehicle battery is provided. When the vehicle is in the energy recovery state, the cell voltage of the vehicle battery is detected, and it is determined whether there is an overvoltage risk for the cell voltage. When it is determined that there is an overvoltage risk for the cell voltage, the cell temperature and the power integral value of the current battery are obtained, and the target passivation duration corresponding to the battery is determined according to at least one of the cell voltage, the cell temperature, or the power integral value. The recovery power of the vehicle energy recovery is adjusted to 0. When the duration of adjusting the recovery power to 0 this time reaches the target passivation duration, the recovery power of the vehicle energy recovery is adjusted to a predetermined power, and the step of detecting the cell voltage of the vehicle battery is returned to be executed. The method in the embodiments of the present application can dynamically determine the passivation duration of the vehicle battery, limit the recovery power according to the passivation duration, thereby improving the safety and stability of the battery during energy recovery, reducing the probability of overcharging, and being beneficial to extending the service life of the vehicle battery.

[0062] Please refer to Figure 1 , Figure 1 FIG. shows a schematic diagram of the implementation environment of a method for controlling the operation of a vehicle battery provided in the embodiments of the present application. In this implementation environment, the main software and hardware entities involved include a terminal device 110 and a background server 120. The terminal device 110 and the background server 120 are communicatively connected.

[0063] Specifically, the method for controlling the operation of a vehicle battery provided in the embodiments of the present application can be executed independently on the side of the terminal device 110, or executed based on the data interaction between the terminal device 110 and the background server 120. The terminal device 110 can be an in-vehicle terminal; the background server 120 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN (Content Delivery Network), and big data and artificial intelligence platforms.

[0064] A communication connection can be established between the terminal device 110 and the background server 120 via a wireless network or a wired network. The wireless network or the wired network uses standard communication technologies and / or protocols. The network can be set to the Internet or any other network, such as, including but not limited to, any combination of a Local Area Network (LAN), a Metropolitan Area Network (MAN), a Wide Area Network (WAN), a mobile, wired or wireless network, a private network or a virtual private network.

[0065] Of course, it can be understood that Figure 1 the implementation environment in Figure 1 is only some optional application scenarios of the battery operation control method for vehicles provided in the embodiments of the present application. The actual application is not fixed to

[0066] Next, in combination with the introduction of the foregoing implementation environment, a battery operation control method for vehicles provided in the embodiments of the present application will be introduced and described.

[0067] Please refer to Figure 2 Figure 2 which is a schematic diagram of a battery operation control method for vehicles provided in the embodiments of the present application. The battery operation control method for vehicles includes but is not limited to:

[0068] Step 210: When the vehicle is in the energy recovery state, detect the cell voltage of the vehicle's battery and determine whether there is an overvoltage risk for the cell voltage;

[0069] Step 220: When it is determined that there is an overvoltage risk for the cell voltage, obtain the cell temperature and the power integral value of the current battery, and determine the target passivation duration corresponding to the battery according to at least one of the cell voltage, the cell temperature or the power integral value;

[0070] Step 230: Adjust the recovery power of the vehicle's energy recovery to 0;

[0071] Step 240: When the duration of adjusting the recovery power to 0 in this time reaches the target passivation duration, adjust the recovery power of the vehicle's energy recovery to a predetermined power and return to execute the step of detecting the cell voltage of the vehicle's battery.

[0072] In the embodiments of the present application, a battery operation control method for vehicles is provided. This method can dynamically determine the passivation duration of the vehicle battery, limit the recovery power according to the passivation duration, thereby improving the safety and stability of the battery during energy recovery, reducing the probability of overcharging, and being beneficial to extending the service life of the vehicle battery.​

[0073] Specifically, the method in the embodiments of the present application can be applied to vehicles with an energy recovery function, and these vehicles are generally new energy vehicles (such as electric vehicles). During the operation of the vehicle, when in the energy recovery state, the cell voltage of the vehicle's battery can be detected. For a vehicle, it generally uses a battery pack for power supply, and the number of battery cells in the entire battery pack is multiple. In the embodiments of the present application, the specific number of battery cells in the battery pack is not limited. When detecting the cell voltage of the battery, relevant voltage sampling circuits can be configured for the cells. The specific number of voltage sampling circuits is not limited in the present application. Specifically, all the battery cells in the battery pack can each correspond to a voltage sampling circuit, or some of the battery cells in the battery pack can each correspond to a voltage sampling circuit. When detecting the cell voltage, the voltage of each cell can be collected, and then the average value can be obtained to get the final result. This process can be implemented by the BMS (Battery Management System), which is not elaborated in the present application.

[0074] For the obtained cell voltage, it can be determined whether there is an overvoltage risk. Here, the specific method for determining the overvoltage risk is not limited. Exemplarily, in some embodiments, a static threshold strategy can be adopted for determination. For example, a voltage threshold can be preset (such as for ternary lithium cells, it can be set to 4V or 4.2V, etc.). Then, the cell voltage and the voltage threshold can be compared. If it is found that the cell voltage is greater than the voltage threshold, it can be determined that there is an overvoltage risk. In some embodiments, a dynamic prediction strategy can also be adopted for determination. For example, based on the cell voltage and combined with the current voltage change rate, it can be predicted whether it is likely to exceed the voltage threshold within the next 100 ms. If so, it can be determined that there is an overvoltage risk.

[0075] In the embodiments of the present application, if it is determined that there is an overvoltage risk in the cell voltage, it indicates that there may be overcharging in the current application of energy recovery. To reduce various problems caused by overcharging of the battery, it can be considered to adjust the recovery power of energy recovery. In conventional applications, a deactivation duration may be fixedly set, and then the recovery power is set to 0. After maintaining the deactivation duration for a period of time, energy recovery is carried out normally. However, this method does not consider the actual working state of the battery, and the set deactivation duration is likely to be too long or too short. If it is too long, it will cause energy to be wasted in vain, reducing the energy utilization efficiency; if it is too short, there will still be a risk of overcharging, affecting the service life of the battery.

[0076] Therefore, in the embodiments of the present application, when restricting the recovery power of energy recovery, the cell temperature and power integral value of the current battery are obtained, and then the target passivation duration corresponding to the battery is determined according to at least one of the cell voltage, cell temperature, or power integral value. Among them, the magnitudes of the cell voltage and cell temperature are positively correlated with the magnitude of the target passivation duration, and the magnitude of the power integral value is negatively correlated with the magnitude of the target passivation duration. The present application does not limit the specific functional relationship between them. It can be understood that in the embodiments of the present application, determining the corresponding target passivation duration according to the current usage state of the battery can facilitate more accurate control of the energy recovery process of the battery, improve the energy utilization efficiency, reduce the risk of overcharging, and increase the cycle service life of the battery.

[0077] In the embodiments of the present application, after determining the target passivation duration corresponding to the battery, the recovery power of the vehicle's energy recovery can be adjusted to 0. In this way, the battery will temporarily stop charging, which can enable the battery pack to better digest the charged electrical energy during this period (i.e., the target passivation duration), balance the cell voltages of each cell, and reduce the probability of lithium plating damage to the cells. When the duration of this recovery power adjustment to 0 reaches the target passivation duration, it is considered that the current battery has completed energy recovery and passivation, and the energy recovery task can be continued. At this time, the recovery power of the vehicle's energy recovery can be adjusted to a predetermined power, that is, the power used during normal energy recovery, so as to execute the energy recovery task.

[0078] It should be noted that the method in the embodiments of the present application can be executed cyclically. That is, after the battery returns to continue executing the energy recovery task, the cell voltage of the battery can be continuously detected. When there is a risk of overvoltage in the cell voltage, passivation operation is performed again. In this way, the working condition of the battery can be dynamically adjusted, enabling the cells to be in appropriate working parameters for a long time, avoiding overcharging, and extending the service life of the battery.

[0079] It can be understood that in the embodiments of the present application, a method for controlling the operation of a vehicle battery is provided. When the vehicle is in the energy recovery state, the cell voltage of the vehicle battery is detected, and it is determined whether there is an overvoltage risk for the cell voltage. When it is determined that there is an overvoltage risk for the cell voltage, the cell temperature and the power integration value of the current battery are obtained, and the target deactivation duration corresponding to the battery is determined according to at least one of the cell voltage, the cell temperature, or the power integration value. The recovery power of the vehicle energy recovery is adjusted to 0. When the duration of adjusting the recovery power to 0 this time reaches the target deactivation duration, the recovery power of the vehicle energy recovery is adjusted to a predetermined power, and the step of detecting the cell voltage of the vehicle battery is returned for execution. The method in the embodiments of the present application can dynamically determine the deactivation duration of the vehicle battery, limit the recovery power according to the deactivation duration, thereby improving the safety and stability of the battery during energy recovery, reducing the probability of overcharging, and being beneficial to extending the service life of the vehicle battery.

[0080] Specifically, in some embodiments, the determining whether there is an overvoltage risk for the cell voltage includes:

[0081] Obtain a pre-set voltage threshold and a time threshold;

[0082] Detect whether the cell voltage is greater than the voltage threshold;

[0083] If the cell voltage is greater than the voltage threshold, count the cumulative duration during which the cell voltage continuously exceeds the voltage threshold;

[0084] If the cumulative duration is greater than the time threshold, determine that there is an overvoltage risk for the cell voltage.

[0085] In the embodiments of the present application, when determining whether there is an overvoltage risk for the cell voltage, in some cases, it can be detected whether the cell voltage exceeds the voltage threshold for a relatively long period of time. In this way, misjudgment caused by temporary overvoltage due to voltage fluctuations of the cell voltage can be reduced.

[0086] Specifically, in the embodiments of the present application, a pre-set voltage threshold and a time threshold can be obtained, and their magnitudes can be flexibly set according to needs. For example, the voltage threshold can be 4V and the time threshold can be 100 milliseconds. Then, it can be detected whether the cell voltage is greater than the voltage threshold. If it is found to be greater, the duration during which it exceeds the voltage threshold can be started to be accumulated to obtain the corresponding cumulative duration. If the cumulative duration is greater than the time threshold, it can be determined that there is an overvoltage risk for the cell voltage. In other words, if it is found that the duration during which the cell voltage is greater than 4V exceeds 100 milliseconds, it can be determined that there is an overvoltage risk for the cell voltage. In this way, the influence brought by the voltage fluctuation of the cell voltage can be ignored, and the accuracy of overvoltage judgment can be improved.

[0087] Specifically, in some embodiments, obtaining the power integration value of the current battery includes:

[0088] Obtaining the power curve data when the vehicle is in the state of energy recovery this time;

[0089] Determining the power integration value of the current battery according to the power curve data.

[0090] In the embodiments of the present application, the power integration value of the vehicle battery is a parameter used to describe the cumulative power output of the battery within a certain period of time. It can be obtained by acquiring the power curve data when the vehicle is in the state of energy recovery this time and performing integral calculation based on the power curve data. It can be understood that the higher the power integration value of the battery, the faster its power consumption speed and the more power consumption. Therefore, the relative target passivation duration can be set shorter to achieve energy recovery as soon as possible.

[0091] Specifically, in some embodiments, determining the target passivation duration corresponding to the battery according to at least one of the cell voltage, the cell temperature, or the power integration value includes:

[0092] Obtaining the reference passivation duration corresponding to the battery;

[0093] Determining the first reference passivation duration according to the cell voltage;

[0094] Determining the second reference passivation duration according to the cell temperature;

[0095] Determining the third reference passivation duration according to the power integration value;

[0096] Accumulating at least one of the first reference passivation duration, the second reference passivation duration, and the third reference passivation duration on the reference passivation duration to obtain the target passivation duration corresponding to the battery.

[0097] In the embodiments of the present application, when determining the target passivation duration corresponding to the battery, the reference passivation duration corresponding to the battery can be obtained, for example, 100 milliseconds. Then, based on the cell voltage, the cell temperature, and the power integration value respectively, the corresponding reference passivation durations are determined, denoted as the first reference passivation duration, the second reference passivation duration, and the third reference passivation duration. Then, adding at least one of the first reference passivation duration, the second reference passivation duration, or the third reference passivation duration to the reference passivation duration can obtain the target passivation duration.

[0098] Specifically, in some embodiments, determining the first reference passivation duration according to the cell voltage includes:

[0099] Detect the peak voltage during the period when the battery cell voltage continuously exceeds the voltage threshold;

[0100] Calculate the difference between the peak voltage and the voltage threshold to obtain a voltage parameter;

[0101] Determine the first reference passivation duration according to the product of the voltage parameter and a preset proportional parameter.

[0102] In the embodiments of the present application, when determining the first reference passivation duration according to the battery cell voltage, the peak voltage during the period when the battery cell voltage continuously exceeds the voltage threshold can be detected. It can be understood that the larger the peak voltage is, the more serious the overvoltage condition of the current battery cell voltage is. Relatively speaking, the set passivation duration needs to be longer. Therefore, in the embodiments of the present application, the difference between the peak voltage and the voltage threshold can be calculated to obtain a voltage parameter. Then, the product of the voltage parameter and a preset proportional parameter can be calculated to determine the first reference passivation duration.

[0103] Exemplarily, in the embodiments of the present application, the reference passivation duration can be denoted as Timer_1, and the target passivation duration can be denoted as Timer_m. Assuming that only the first reference passivation duration is considered in the current target passivation duration, the peak voltage Record_cellV can be obtained, and the voltage threshold is SW_ERR_PerMIT_CellV. According to the difference between the peak voltage and the voltage threshold, a voltage parameter can be obtained. The proportional parameter can be set to 1000. Then, the target passivation duration can be calculated by the following formula, and its unit can be milliseconds:

[0104] Timer_m = Timer_1 + ((Record_cellV - SW_ERR_PerMIT_CellV) * 1000)

[0105] Specifically, in some embodiments, adjusting the recovery power of the vehicle energy recovery to a predetermined power includes:

[0106] Display several recommended recovery levels of energy recovery to the driver of the vehicle;

[0107] Determine the predetermined power according to the recovery level selected by the driver;

[0108] Adjust the recovery power of the vehicle energy recovery to the predetermined power.

[0109] In the embodiments of the present application, the energy recovery mode of the vehicle may include some preset recovery levels (such as strong / medium / weak), and these recovery levels can be used to determine the intensity of energy recovery. In the embodiments of the present application, when adjusting the recovery power of the vehicle energy recovery to a predetermined power, the predetermined power can be determined according to the recovery level. Exemplarily, several recommended recovery levels of energy recovery can be displayed to the driver of the vehicle. Here, the recommended recovery level can be determined based on the previously determined target passivation duration. Generally speaking, if the previously determined target passivation duration is relatively long, it indicates that the current intensity of energy recovery is relatively high, and the battery needs a relatively long time to passivate. At this time, a recommended recovery level with a lower intensity can be determined. On the contrary, if the previously determined target passivation duration is relatively short, it indicates that the current intensity of energy recovery is normal and the state of the battery is good. At this time, a recommended recovery level with a higher intensity can be determined. Then, the predetermined power can be determined according to the recovery level selected by the driver to perform the energy recovery operation. In this way, the rationality of the recovery level used during energy recovery can be improved.

[0110] Referring to Figure 3 , in the embodiments of the present application, a battery operation control device for a vehicle is further provided, including:

[0111] A detection unit 310, configured to detect the cell voltage of the vehicle battery when the vehicle is in an energy recovery state, and determine whether there is an overvoltage risk for the cell voltage;

[0112] A processing unit 320, configured to, when it is determined that there is an overvoltage risk for the cell voltage, obtain the cell temperature and power integral value of the current battery, and determine the target passivation duration corresponding to the battery according to at least one of the cell voltage, the cell temperature, or the power integral value;

[0113] An adjustment unit 330, configured to adjust the recovery power of the vehicle energy recovery to 0;

[0114] A loop unit 340, configured to, when the duration of adjusting the recovery power to 0 in this time reaches the target passivation duration, adjust the recovery power of the vehicle energy recovery to a predetermined power, and return to execute the step of detecting the cell voltage of the vehicle battery.

[0115] It can be understood that the content in the above method embodiments is applicable to the device embodiments of the present application. The functions specifically implemented by the device embodiments of the present application are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those of the above method embodiments.

[0116] Referring to Figure 4 , in the embodiments of the present application, an electronic device is provided, including:

[0117] At least one processor 410;

[0118] At least one memory 420 for storing at least one program;

[0119] When the at least one program is executed by the at least one processor 410, the at least one processor 410 is caused to implement the battery operation control method of the vehicle described above.

[0120] Similarly, the content in the above method embodiments is applicable to the embodiments of this electronic device. The functions specifically implemented in the embodiments of this electronic device are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those in the above method embodiments.

[0121] The embodiments of the present application also provide a computer-readable storage medium storing a program executable by the processor 410. The program executable by the processor 410 is used to execute the battery operation control method of the vehicle described above when executed by the processor 410.

[0122] Similarly, the content in the above method embodiments is applicable to the embodiments of this computer-readable storage medium. The functions specifically implemented in the embodiments of this computer-readable storage medium are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those in the above method embodiments.

[0123] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order mentioned in the operation diagrams. For example, depending on the functions / operations involved, two consecutive blocks shown may actually be executed substantially simultaneously or the blocks can sometimes be executed in the reverse order. In addition, the embodiments presented and described in the flowcharts of the present application are provided by way of example for the purpose of providing a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logical flows presented herein. Alternative embodiments are contemplated where the order of various operations is changed and where sub-operations described as part of a larger operation are executed independently.

[0124] In addition, although the present application has been described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and / or features may be integrated in a single physical device and / or software module, or one or more functions and / or features may be implemented in separate physical devices or software modules. It should also be understood that a detailed discussion of the actual implementation of each module is not necessary for understanding the present application. Rather, given the attributes, functions, and internal relationships of the various functional modules in the devices disclosed herein, the actual implementation of the modules will be understood within the ordinary skills of an engineer. Thus, those skilled in the art can implement the present application as set forth in the claims without undue experimentation. It should also be understood that the specific concepts disclosed are merely illustrative and are not intended to limit the scope of the present application, which is determined by the full scope of the appended claims and their equivalents.

[0125] If a function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0126] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch instructions from the instruction execution system, apparatus, or device and execute the instructions), or in conjunction with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0127] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection (electronic device) having one or more wirings, a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable media can even be paper or other suitable media on which a program can be printed, as the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing it in a suitable manner if necessary, and then storing it in a computer memory.

[0128] It should be understood that various parts of the present application can be implemented by hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well-known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0129] In the above description of this specification, the descriptions referring to the terms "one embodiment / example", "another embodiment / example", or "certain embodiments / examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0130] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

[0131] The above has specifically described the preferred embodiments of the present application, but the present application is not limited to the embodiments. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present application, and these equivalent deformations or substitutions are all included within the scope defined by the claims of the present application.

Claims

1. A battery operation control method for a vehicle, characterized in that: The method comprises: When the vehicle is in an energy recovery state, detecting a cell voltage of a battery of the vehicle, and determining whether the cell voltage has an overvoltage risk; When it is determined that the battery cell voltage has an overvoltage risk, obtaining the current battery cell temperature and power integral value of the battery, and determining a target deactivation time corresponding to the battery according to at least one of the battery cell voltage, the battery cell temperature or the power integral value; Adjusting the recovery power of the vehicle energy recovery to 0; When the duration of the recovery power being adjusted to 0 this time reaches the target passivation duration, the recovery power of the vehicle energy recovery is adjusted to a predetermined power, and the step of detecting the cell voltage of the battery of the vehicle is returned to be executed.

2. The battery operation control method of a vehicle according to claim 1, characterized in that: The determining whether the cell voltage has an overvoltage risk includes: Obtaining a preset voltage threshold and time threshold; Detecting whether the cell voltage is greater than the voltage threshold; If the cell voltage is greater than the voltage threshold, counting the cumulative time during which the cell voltage is continuously greater than the voltage threshold; If the accumulated time is greater than the time threshold, it is determined that the cell voltage has an overvoltage risk.

3. The battery operation control method of a vehicle according to claim 1, characterized in that: Obtain the current power integral value of the battery, including: Acquiring power curve data of the vehicle in a state of energy recovery; The current power integral value of the battery is determined according to the power curve data.

4. The battery operation control method of a vehicle according to claim 2, characterized in that: The determining the target deactivation time corresponding to the battery according to at least one of the battery cell voltage, the battery cell temperature or the power integral value includes: Obtaining a baseline deactivation time duration corresponding to the battery; Determining a first reference passivation time duration according to the cell voltage; Determining a second reference passivation time according to the battery core temperature; Determining a third reference passivation duration according to the power integral value; At least one of the first reference deactivation duration, the second reference deactivation duration, and the third reference deactivation duration is accumulated on the base deactivation duration to obtain a target deactivation duration corresponding to the battery.

5. The battery operation control method of a vehicle according to claim 4, characterized in that: The determining, according to the cell voltage, a first reference passivation time duration includes: Detecting a peak voltage during a period in which the cell voltage is continuously greater than the voltage threshold; Calculating the difference between the peak voltage and the voltage threshold to obtain a voltage parameter; A first reference deactivation time duration is determined according to a product of the voltage parameter and a preset proportional parameter.

6. The battery operation control method of a vehicle according to claim 1, characterized in that: The step of adjusting the recovery power of the vehicle energy recovery to a predetermined power comprises: presenting to a driver of the vehicle a number of recommended recovery levels for energy recovery; determining the predetermined power according to the recovery level selected by the driver; The recovery power of the vehicle energy recovery is adjusted to the predetermined power.

7. A vehicle battery operation control method according to claim 6, characterized in that: The method of presenting a plurality of recommended recovery levels of energy recovery to a driver of the vehicle comprises: Determining a number of recommended recovery levels for energy recovery based on the target deactivation duration determined last time; A plurality of the recommended recycling levels are displayed to a driver of the vehicle.

8. A battery operation control device for a vehicle, characterized in that: The device comprises: A detection unit, used to detect the cell voltage of the battery of the vehicle when the vehicle is in an energy recovery state, and determine whether there is an overvoltage risk of the cell voltage; a processing unit, configured to, when determining that the battery cell voltage has an overvoltage risk, obtain a current battery cell temperature and a power integral value of the battery, and determine a target deactivation time corresponding to the battery according to at least one of the battery cell voltage, the battery cell temperature or the power integral value; An adjustment unit, used for adjusting the recovery power of the vehicle energy recovery to 0; The circulation unit is used to adjust the recovery power of the vehicle energy recovery to a predetermined power when the duration of the recovery power being adjusted to 0 reaches the target passivation duration, and return to execute the step of detecting the cell voltage of the battery of the vehicle.

9. An electronic device, characterized in that: include: at least one processor; at least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the battery operation control method for a vehicle as described in any one of claims 1-7.

10. A computer-readable storage medium storing a program executable by a processor, characterized in that: The processor-executable program is used to implement a battery operation control method for a vehicle as claimed in any one of claims 1 to 7 when executed by the processor.

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