Storage battery health state assessment method, device and equipment and readable storage medium

Abstract

The embodiment of the invention provides a storage battery health state assessment method, device and equipment and a readable storage medium. The method comprises the following steps: acquiring battery information of a storage battery; under the condition that the battery information meets the electricity supplementing requirement, the storage battery is controlled to execute electricity supplementing operation; in the process that the storage battery executes the charging operation, the charging current of the storage battery and the charge state corresponding to the storage battery are obtained, and the charge state is used for representing the proportion of the electric energy stored in the storage battery to the total battery capacity of the storage battery; under the condition that the charging current meets the preset current condition, controlling the storage battery to stop charging operation and determining the charging duration of the storage battery; and determining the battery health degree of the storage battery based on the charging current, the charging duration and the state of charge. A sensor does not need to be additionally arranged for the storage battery to estimate the health degree of the battery, the health degree of the battery is visually and accurately determined by directly utilizing data generated in the charging process, and the efficiency and accuracy of determining the health degree of the battery are improved to a certain extent.

Description

Technical Field

[0001] The present application relates to the technical field of battery failure prediction, and in particular to a battery health status assessment method, device, equipment and readable storage medium. Background Art

[0002] As a key energy storage component of the power distribution terminal, the battery is usually used to support the control and communication functions of the power distribution terminal. However, the health of the battery will deteriorate with the use time and changes in environmental conditions, which directly affects the reliability of the power distribution terminal.

[0003] In the related art, a battery sensor is provided in a power distribution terminal, and the battery sensor estimates the battery health of the battery.

[0004] However, battery sensors cannot accurately predict the degree of battery health degradation, and cannot effectively alert users, which affects the use of the battery. Summary of the invention

[0005] The embodiments of the present application provide a battery health status assessment method, device, equipment and readable storage medium, which improve the accuracy of determining the battery health of the battery to a certain extent, facilitate subsequent users to formulate maintenance strategies based on the battery health, and extend the service life of the battery. The technical solution is as follows:

[0006] In one aspect, a method for evaluating the health status of a battery is provided, the method comprising:

[0007] Acquiring battery information of the battery, wherein the battery information is used to indicate the battery operation status of the battery;

[0008] When the battery information meets the charging requirement, controlling the storage battery to perform a charging operation, wherein the charging operation is used to indicate an operation of converting a high voltage in a high-voltage battery module into a low voltage and transmitting the low voltage to the storage battery;

[0009] During the process of the battery performing the charging operation, obtaining the charging current of the battery and the state of charge corresponding to the battery, wherein the state of charge is used to characterize the proportion of the electric energy stored in the battery to the total battery capacity of the battery;

[0010] When the charging current meets the preset current condition, controlling the battery to stop the charging operation and determining the charging time of the battery;

[0011] A battery health of the battery is determined based on the charging current, the charging time, and the state of charge.

[0012] In another aspect, a battery health status assessment device is provided, the device comprising:

[0013] An acquisition module, used for acquiring battery information of the battery, wherein the battery information is used for indicating the battery operation status of the battery;

[0014] a control module, configured to control the storage battery to perform a charging operation when the battery information meets the charging requirement, wherein the charging operation is used to indicate an operation of converting a high voltage in a high-voltage battery module into a low voltage and transmitting the low voltage to the storage battery;

[0015] The acquisition module is further used to acquire the charging current of the battery and the state of charge corresponding to the battery during the process of the battery performing the charging operation, wherein the state of charge is used to represent the proportion of the electric energy stored in the battery to the total battery capacity of the battery;

[0016] A determination module, configured to control the battery to stop the charging operation and determine the charging time of the battery when the charging current meets a preset current condition;

[0017] The determination module is further used to determine the battery health of the battery based on the charging current, the charging time and the state of charge.

[0018] On the other hand, a computer-readable storage medium is provided, wherein at least one section of information is stored in the computer-readable storage medium, and the at least one section of information is loaded and executed by a processor to implement the battery health status assessment method as described above.

[0019] On the other hand, a computer program product or a computer program is provided, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes to implement the battery health status assessment method as described above.

[0020] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0021] When the battery information of the battery meets the charging requirements, the battery is controlled to perform the charging operation. During the charging process, the battery health is determined based on the battery's charging current, state of charge, and key duration. There is no need to set up additional sensors for the battery to estimate the battery health. The data generated during the charging process can be used to directly and accurately determine the battery health, which improves the efficiency and accuracy of determining the battery health to a certain extent. Relevant personnel can quickly formulate a maintenance strategy that matches the current usage status of the battery through the battery health, thereby increasing the battery's service life and ensuring the charging efficiency / discharging efficiency of the battery during the subsequent charging and discharging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a flowchart of a method for evaluating the health status of a battery provided in an embodiment of the present application;

[0024] Figure 2 is a flow chart of a battery health status assessment method provided by an exemplary embodiment of the present application;

[0025] Figure 3 is a flowchart corresponding to a method for evaluating a battery health status provided by another exemplary embodiment of the present application;

[0026] Figure 4 is a flowchart of a method for evaluating the health status of a battery provided by another exemplary embodiment of the present application;

[0027] Figure 5 is a flowchart of a battery health status assessment device provided by an exemplary embodiment of the present application;

[0028] Figure 6 is a flowchart of a battery health status assessment device provided by another exemplary embodiment of the present application;

[0029] Figure 7 It is a structural block diagram corresponding to a computer device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation mode of the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0031] In this application, the terms "first", "second", etc. are used to distinguish identical or similar items with substantially the same effects and functions. It should be understood that there is no logical or temporal dependency between "first" and "second", nor is there any limitation on quantity and execution order.

[0032] It should be noted that the information, data (including but not limited to data for analysis, storage, display, etc.) and signals involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of relevant countries and regions. For example, the framework data involved in this application are all obtained with full authorization.

[0033] First, a battery involved in a battery health status assessment method provided in an embodiment of the present application is introduced in detail.

[0034] A battery is a device that converts chemical energy into electrical energy and can be repeatedly charged and discharged to store and release electrical energy. Schematically, a battery recovers its stored electrical energy through a charging process after being discharged.

[0035] The battery includes electrodes, electrolytes, containers and terminals. The electrodes are usually made of materials that participate in electrochemical reactions, such as lead, lithium or other metals and their compounds; the electrolyte is a material that conducts ions, such as liquid, gel or solid; the container is used to hold the electrodes and electrolyte, and is realized as a shell made of plastic, metal or other materials; the terminals are used to connect to external circuits to enable electrical energy input (charging) or output (discharging).

[0036] The working principle of the battery is based on an electrochemical process involving the redox reaction of the electrode material. During the charging process, electrical energy is used to drive the redox reaction in a specified direction; while during the discharging process, the reaction proceeds in the opposite direction of the specified direction, thereby releasing electrical energy.

[0037] The types of batteries include but are not limited to lead-acid batteries, lithium-ion batteries, nickel-cadmium batteries, and nickel-metal hydride batteries, etc. It should be noted that each type of battery has its own specific chemical composition, performance characteristics, and application fields, which will not be described in detail here.

[0038] The uses of batteries include but are not limited to the following seven.

[0039] The first type is that the battery is used in vehicles. Schematically, the battery is installed in vehicles such as cars, buses, trucks and motorcycles to provide them with the power required for starting, ignition and operation. In the embodiments of the present application, the battery can also be used in the energy storage system of electric vehicles and hybrid vehicles.

[0040] The second type is the use of batteries in the communications industry, where they are usually used in power systems for equipment such as telephone exchange systems, mobile communication base stations, and optical fiber communication systems.

[0041] The third type is the application of batteries in power systems. Usually batteries are used as backup power in power grids to ensure that power can be quickly restored in an emergency.

[0042] Fourthly, batteries are used in the field of navigation and aviation. They are used as backup power sources in various electronic devices on ships and aircraft to ensure the normal operation of key equipment.

[0043] The fifth type is the application of storage batteries in the industrial field. In this field, storage batteries are used as starting batteries, power sources for lighting equipment and tools in industrial equipment.

[0044] The sixth type is the application of batteries in renewable energy systems. In renewable energy systems such as solar and wind power generation, batteries can smooth power output fluctuations, reduce the impact on the power grid, and improve the utilization rate of renewable energy.

[0045] The seventh type is the application of batteries in power grid auxiliary service systems. In this system, batteries are usually implemented as energy storage batteries, playing a role in power grid peak regulation and frequency regulation.

[0046] The above are only illustrative examples, and the present application does not limit the use and application scenarios of the battery.

[0047] Secondly, in the embodiment of the present application, the battery is used in the vehicle field as an example for illustration, that is, a battery health status assessment method provided in the embodiment of the present application is executed by a vehicle device. The specific structure of the vehicle device and an exemplary execution process of a battery health status assessment method are shown in the following content.

[0048] Figure 1 The structure block diagram of a vehicle device 100 provided by an exemplary embodiment of the present application is shown. The vehicle device 100 is implemented as a system architecture of a battery health status assessment method.

[0049] The vehicle device 100 includes at least one of a fuel vehicle, an electric vehicle, a hybrid vehicle, a fuel cell vehicle, a solar vehicle, etc., wherein a hybrid vehicle refers to a combination of a fuel vehicle and an electric vehicle. The present application does not limit the specific type of the vehicle.

[0050] In the embodiment of the present application, the vehicle equipment 100 includes: a vehicle controller 101 , a high-voltage conversion module 102 , a high-voltage battery module 103 and a battery 104 .

[0051] Among them, the vehicle controller 101, the high-voltage conversion module 102 and the high-voltage battery module 103 are connected through a communication bus, and the battery 104 provides a low-voltage power supply for the low-voltage parts of the vehicle controller 101, the high-voltage conversion module 102 and the high-voltage battery module 103.

[0052] After the vehicle device 100 is locked and powered off, the vehicle device 100 enters a dormant state. In the dormant state, the vehicle device 100 has a certain static current, which consumes the power of the battery 104.

[0053] In order to maintain the service life of the battery 104 , the vehicle device 100 periodically replenishes the battery 104 to cope with the consumption of the battery 104 by the static current.

[0054] The vehicle controller 101 obtains battery information of the battery 104 at every preset time period, and the battery information is used to indicate the battery operation status of the battery.

[0055] When the battery information meets the charging requirement, the storage battery 104 is controlled to perform the charging operation.

[0056] The specific charging operation includes: the vehicle controller 101 outputs high voltage electricity to the high voltage conversion module 102 through the high voltage battery module 103, and the high voltage conversion module 102 converts the high voltage into a low voltage to charge the battery 104.

[0057] After the charging is completed, the battery health of the battery is calculated based on the relevant parameters generated during the above charging process (including but not limited to charging time, charging current and state of charge).

[0058] The vehicle controller 101 generates a maintenance strategy for the battery 104 based on the battery health.

[0059] In another optional embodiment, the vehicle device 100 further includes a remote communication module. The vehicle device 100 performs data exchange with other devices and / or servers via the remote communication module.

[0060] Optionally, the vehicle device 100 pushes / sends the maintenance strategy to an associated device that has a communication connection with the vehicle device 100 through a remote communication module. The vehicle device 100 and the associated device implement data exchange through wireless communication or wired communication.

[0061] In another optional embodiment, the vehicle device 100 and the server jointly execute a battery health assessment method provided in an embodiment of the present application.

[0062] In an illustrative manner, the vehicle device 100 completes the above charging operation by itself, and after the vehicle controller 101 calculates the battery health, the vehicle information and battery health related to the vehicle device 100 are sent to the server. The server generates a maintenance strategy for the battery 104 based on the vehicle information and battery health.

[0063] It should be noted that the above description only takes the application of the battery to a vehicle as an example. The present application does not limit the specific application scenario of the battery and is applied to all power distribution equipment.

[0064] Combined with the above introduction, Figure 2 This is a flow chart of a battery health status assessment method provided by an embodiment of the present application, and the scheme is applied to Figure 1 The vehicle device 110 shown is used as an example for description.

[0065] Step 200, obtaining battery information of the battery.

[0066] Optionally, a battery is a device used to convert chemical energy into electrical energy and can be repeatedly charged and discharged to store and release electrical energy. Schematically, the battery recovers its stored electrical energy through a charging process after being discharged.

[0067] In the embodiment of the present application, the battery information is used to indicate the battery operation status of the battery.

[0068] The battery information includes the voltage of the battery.

[0069] Optionally, the voltage may be the rated voltage of the battery, or the charging voltage of the battery during the charging process. In the embodiment of the present application, the voltage is understood to be the charging voltage of the battery during the charging process.

[0070] Combined with the above Figure 1 The vehicle controller obtains the battery information of the battery.

[0071] Before the vehicle controller periodically recharges the battery, the vehicle controller detects the voltage of the battery and then determines the battery information of the battery.

[0072] Step 210: When the battery information meets the charging requirement, control the battery to perform the charging operation.

[0073] In the embodiment of the present application, the power replenishment requirement is used to indicate that the voltage of the battery is less than a preset voltage value, and the preset voltage value is pre-set.

[0074] That is, when the voltage of the battery is less than the preset voltage value, the battery is controlled to perform a charging operation.

[0075] The charging operation refers to the operation of converting the high voltage in the high-voltage battery module into a low voltage and transmitting it to the battery.

[0076] The high-voltage battery module is a module that provides continuous power support for vehicle equipment to ensure the normal driving of the vehicle equipment. The high-voltage battery module is composed of multiple battery cells, and multiple battery cells are combined in series and parallel to form a battery module. The battery management unit and other electrical appliances are configured on the basis of the battery module to finally form a high-voltage battery module. The high-voltage battery module can be charged with both AC and DC power. The batteries in the high-voltage battery module or other batteries connected to the high-voltage battery module are charged with AC or DC power.

[0077] Taking the battery installed in a vehicle as an example, the charging operation includes the following contents.

[0078] Vehicle equipment includes vehicle controller, high-voltage conversion module and high-voltage battery system.

[0079] After the vehicle equipment is locked and powered off, the vehicle equipment enters a dormant state. In the dormant state, the vehicle equipment wakes up the vehicle controller at a preset time interval to detect the battery voltage; when the voltage is less than the preset voltage value, the vehicle controller controls the high voltage on the high-voltage battery module and transmits the high voltage to the high voltage conversion module, which converts the high voltage into low voltage, and then transmits the low voltage to the battery, completing the battery charging operation.

[0080] Step 220 , while the battery is performing a charging operation, obtaining the charging current of the battery and the corresponding state of charge of the battery.

[0081] Charging current refers to the current value generated by the battery during the charging operation.

[0082] The state of charge is used to characterize the proportion of the electric energy stored in the battery to the total battery capacity of the battery, wherein the total battery capacity of the battery can be the nominal capacity mentioned above.

[0083] In another optional embodiment, the state of charge is used to indicate the proportion of the electric energy stored in the battery during the charging operation to the total battery capacity of the battery.

[0084] In the embodiment of the present application, the low-voltage load current of the battery during charging and the output current of the high-voltage battery module are obtained.

[0085] The charging current is determined based on the low voltage load current and the output current. Schematically, the charging current is determined based on the difference between the output current and the low voltage load current.

[0086] The state of charge is determined based on the open circuit voltage of the battery. The open circuit voltage is the potential difference between the two electrodes when the battery is open circuit without discharging.

[0087] In the embodiment of the present application, a relationship table corresponding to the open circuit voltage and the state of charge is obtained, and the state of charge corresponding to the battery is determined from the relationship table according to the detected open circuit voltage. The relationship table is set in advance by relevant personnel.

[0088] Step 230: When the charging current meets the preset current condition, the battery is controlled to stop the charging operation and the charging time of the battery is determined.

[0089] During the charging process of the battery, the charging current corresponding to the battery is detected in real time to determine whether the charging current meets the preset current condition, wherein the preset current condition includes that the charging current is less than or equal to the preset current value.

[0090] Illustratively, when the charging current is less than or equal to a preset current value, the battery is controlled to stop the charging operation and the charging time of the battery is determined.

[0091] Taking the battery installed in the vehicle equipment as an example, the process of controlling the battery to stop the charging operation is: the vehicle controller controls the high-voltage battery module to stop supplying high voltage power and stops transmitting voltage to the high-voltage conversion module.

[0092] Determining the charging time of the battery includes any of the following methods:

[0093] The first method is to obtain a first moment corresponding to high voltage on the high-voltage battery module, and obtain a second moment corresponding to high voltage on the low-voltage battery module; based on the difference between the first moment and the second moment, determine the charging time of the battery.

[0094] The second method is to determine the first state of charge of the battery before the charging operation is performed and the second state of charge of the battery after the charging operation is completed (consistent with the meaning of the above state of charge). Obtain the nominal capacity of the battery and the charging power of the battery. Based on the first state of charge, the second state of charge, the nominal capacity and the charging power, determine the charging time of the battery.

[0095] In an illustrative manner, the difference between the second state of charge and the first state of charge is determined to obtain the charge difference; the product of the charge difference and the nominal capacity is calculated, and then the product is compared with the charging power to obtain the charging time.

[0096] The third method is to obtain the charging capacity and charging power of the battery, and determine the charging time of the battery based on the first state of charge, the second state of charge, the nominal capacity and the charging power.

[0097] Step 240 , determining the battery health of the battery based on the charging current, charging time, and state of charge.

[0098] Battery health is used to evaluate the battery performance of a battery, and represents the comparison of the current battery capacity and efficiency of the battery with its initial state. Battery health is usually expressed as a percentage, and a higher battery health means a higher battery performance of the battery. Schematically, a battery health of 100% means that the battery is in optimal condition. With the increase of use and charge and discharge cycles, the battery health will gradually decrease, affecting the battery life and charging speed. In an embodiment of the present application, the battery health is also used to formulate a maintenance strategy for the battery. For the content of formulating a maintenance strategy for the battery based on the battery health, please refer to the following embodiment, which will not be repeated here.

[0099] In an optional embodiment, the battery information includes the nominal capacity of the battery. The nominal capacity of the battery is used to indicate the amount of electricity discharged by the battery when the battery is under preset discharge conditions (the amount of electricity here is the minimum value). The nominal capacity can also be understood as the rated capacity, which is measured at a preset discharge current, a preset termination voltage, and a preset electrolyte temperature. In an embodiment of the present application, the actual capacity of the battery is higher than or equal to the nominal capacity. The unit of the nominal capacity is ampere-hour Ah, which indicates the amount of electricity discharged by the battery at a certain current for one hour. Schematically, a battery with a nominal capacity of 7Ah can be discharged continuously for 20 hours if it is discharged at a charge of 0.35A.

[0100] The charging current is integrated by the ampere-hour integration method to obtain the processed charging current. The charging capacity of the battery is determined based on the processed charging current and charging time. Finally, the battery health is determined based on the charging capacity and the state of charge.

[0101] The ampere-hour integration method records the current and time of the battery during the charging process, calculates the amount of electricity that has been charged into the battery by integration, and then combines the initial state of charge and the nominal capacity to obtain the current state of charge.

[0102] The calculation process of the state of charge may refer to the following formula 1.

[0103]

[0104] In formula 1, I(τ) is used to indicate the current value of the battery that changes with time during the charging process, t is the time when the battery completes the charging operation, and t 0 This is when the battery starts to perform the charging operation.

[0105] In schematic form, the difference between the preset value and the state of charge is determined, and the charging capacity is compared with the difference between the preset value and the state of charge to obtain the battery health. The specific calculation process is shown in the following formula 2.

[0106]

[0107] In another optional embodiment, the battery health is determined based on the nominal capacity, the charging capacity and the state of charge. The specific calculation process can be seen in the following formula 3.

[0108]

[0109] After the battery health is determined, a maintenance strategy for the battery is generated according to the battery health.

[0110] In an embodiment of the present application, when the battery information of the battery meets the charging requirements, the battery is controlled to perform a charging operation. During the charging process, the battery health of the battery is determined based on the charging current, state of charge, and key duration of the battery. There is no need to set up additional sensors for the battery to estimate the battery health. The data generated during the charging process can be directly used to intuitively and accurately determine the battery health, which improves the efficiency and accuracy of determining the battery health to a certain extent. Relevant personnel can quickly formulate a maintenance strategy that matches the current usage status of the battery through the battery health, thereby increasing the battery life and ensuring the charging efficiency / discharging efficiency of the battery during the subsequent charging and discharging process.

[0111] The following example describes in detail the content of formulating a maintenance strategy based on battery health. Figure 3 , Figure 3 A flowchart corresponding to a battery health status assessment method provided in an embodiment of the present application is shown.

[0112] Step 300: formulate a maintenance strategy for the battery according to the battery health.

[0113] In the embodiment of the present application, formulating a battery maintenance strategy includes but is not limited to at least one of the following methods.

[0114] The first one is an optimization strategy based on the remaining service life of the battery.

[0115] In the embodiment of the present application, the battery consumes its own service life during the continuous discharge / charge process, reducing the usable time of the battery. Based on this, after the battery charging operation is completed, the number of cycles of the battery is predicted, and a maintenance strategy for the battery is formulated based on the number of cycles. The number of cycles is used to evaluate the service life of the battery.

[0116] The operating condition data of the battery is obtained, and the operating condition data is used to indicate the working condition and working environment of the battery.

[0117] Illustratively, the operating condition data includes but is not limited to the average discharge depth, average charge depth, ambient humidity, etc. of the battery.

[0118] The operating condition data is input into the Kalman filter to predict the battery health decay rate of the battery.

[0119] In another embodiment, a first battery health corresponding to the battery at a first moment is obtained, and a second battery health corresponding to the battery at a second moment is obtained; the battery health decay rate is calculated based on the ratio of the difference between the second battery health and the first battery health and the difference between the second moment and the first moment.

[0120] The number of cycles can be determined based on the battery health decay rate, battery health and operating condition data. The specific calculation process can be found in the following formula 4.

[0121]

[0122] In Formula 4, the preset health value is pre-set by relevant personnel, and the operating condition data is the average discharge depth.

[0123] When the number of cycles is within the first range, a maintenance strategy for the battery is generated. Schematically, the maintenance strategy includes but is not limited to at least one of the following contents.

[0124] 1) The maintenance strategy includes tips on battery charging techniques. Indicatively, the tips are “Please charge the battery as soon as possible before it runs out of power to avoid damaging the battery!”.

[0125] 2) The maintenance strategy includes prompt information related to the usage habits of the power distribution terminal (the terminal equipped with the battery). For example, the power distribution terminal is implemented as a vehicle terminal, and the prompt information is "Please try to keep the vehicle stable, avoid emergency acceleration and emergency braking, and reduce the burden on the battery!".

[0126] 3) The maintenance strategy includes prompt information related to the battery itself. Indicatively, the prompt information includes but is not limited to prompt information related to cleaning the contact points of the battery, prompt information related to regular inspection of the battery, and the like.

[0127] When the number of cycles is within the second range, a maintenance plan for the battery is generated, wherein the maintenance plan includes a maintenance time and a maintenance location for the battery.

[0128] The geographical location of the power distribution terminal and multiple maintenance locations of the battery are obtained, and the maintenance location closest to the geographical location is determined from the multiple maintenance locations as the maintenance location; and any time after the current time is used as the maintenance time. When determining the maintenance time, the daytime time is prioritized as the maintenance time.

[0129] When the number of cycles meets the third interval, a battery replacement plan is generated and a battery alarm message is triggered, and the alarm message is used to prompt the replacement of the battery. The replacement plan includes a replacement time and a replacement location, and the replacement time is the same as the above-mentioned maintenance time, and the replacement location is the same as the above-mentioned maintenance location. The alarm message can be implemented as an audio alarm message, a video alarm message, or a text alarm message, and this application does not limit this.

[0130] When the alarm information is implemented as video alarm information / text alarm information, the alarm information is displayed on the display screen of the power distribution terminal. When the alarm information is implemented as sound alarm information, the alarm information is played through a microphone or a sound output module.

[0131] The second is an optimization strategy based on battery health partitioning.

[0132] In an embodiment of the present application, the battery health is divided into n intervals, each interval corresponds to a health level, that is, n intervals correspond to n health levels, and n is a positive integer.

[0133] In schematic form, the battery health is divided into three intervals, the first interval is battery health ≤ 50%, the second interval is 50% < battery health ≤ 90%, and the third interval is battery health > 90%. The first interval is considered a low health zone, the second interval is considered a medium health zone, and the third interval is considered a high health zone.

[0134] In each range, the battery charging rules are different.

[0135] Taking the above three intervals as an example, in the first interval, the battery charging rule is to control the battery to enter the slow charging mode during the charging process, set the upper limit of the battery health to the first preset value (such as: 80%), and trigger the battery maintenance warning message. In the second interval, the battery charging rule is to control the battery charging current to a fixed value, and set the upper limit of the battery health to the second preset value (such as: 90%). In the third interval, the battery charging rule is to control the battery to enter the fast charging mode during the charging process, and set the upper limit of the battery health to the third preset value (such as: 100%).

[0136] In another optional embodiment, the battery temperature of the battery is obtained, and the battery health of the battery is adjusted according to the battery temperature. Wherein, when the battery temperature exceeds the temperature threshold, the battery health of the battery is reduced to obtain a first battery health, and a subsequent maintenance strategy execution process is executed based on the first battery health.

[0137] In another optional embodiment, historical discharge data and historical charging data of the battery are obtained, n intervals are automatically adjusted according to the historical discharge data and historical charging data, and m intervals are obtained, where m is a positive integer, and n and m are different values ​​or the same value, which is not limited in the present application.

[0138] The third type is an intelligent balancing optimization strategy based on batteries.

[0139] In the embodiment of the present application, the standard deviation and capacity difference of the voltage in the battery are obtained. A difference index is constructed based on the standard deviation and the capacity difference. The difference index is calculated by the standard deviation and the capacity difference under different weight coefficients. The specific calculation process of the difference index can be referred to the following formula 5.

[0140] Formula 5: Difference index = a*standard deviation + b*capacity difference;

[0141] In Formula 5, a and b are weight coefficients, and a and b may be the same or different, which is not limited in the present application.

[0142] When the battery health is greater than the first value and the difference index is less than the threshold, the current working state of the battery is maintained, and during the next charging of the battery, the charging current and charging voltage of the battery in the most recent charging process are applied.

[0143] When the battery health is less than or equal to the first value and the difference index is greater than or equal to the threshold, during the battery charging process, the charging current is adjusted according to the battery health. Specifically, when the battery health is less than the second value, the charging current is reduced; when the battery health is greater than or equal to the second value and less than the first value, the charging current is increased.

[0144] In an embodiment of the present application, when the battery information of the battery meets the charging requirements, the battery is controlled to perform a charging operation. During the charging process, the battery health of the battery is determined based on the charging current, state of charge, and key duration of the battery. There is no need to set up additional sensors for the battery to estimate the battery health. The data generated during the charging process can be directly used to intuitively and accurately determine the battery health, which improves the efficiency and accuracy of determining the battery health to a certain extent. Relevant personnel can quickly formulate a maintenance strategy that matches the current usage status of the battery through the battery health, thereby increasing the battery life and ensuring the charging efficiency / discharging efficiency of the battery during the subsequent charging and discharging process.

[0145] In the embodiments of the present application, different battery maintenance strategies are formulated based on the battery health to extend the battery life, slow down the rate of battery capacity decay, and effectively improve the efficiency of the battery in subsequent charging and discharging processes.

[0146] Combined with the above introduction, Figure 4 This is a flow chart of a battery health status assessment method provided by an embodiment of the present application, and the scheme is applied to Figure 1 The vehicle device and the server shown in the figure are used as an example for explanation. That is, the following steps involve the interaction process between the vehicle device and the server.

[0147] Step 400: The vehicle controller detects battery information of the battery.

[0148] The battery information is used to indicate the battery operation status of the battery, and the battery information includes the voltage of the battery.

[0149] The process of this step is consistent with the process of the above step 200 and will not be repeated here.

[0150] Step 410, determining the relationship between the voltage and a preset voltage value.

[0151] When the voltage is less than or equal to the preset voltage value, the following step 420 is executed; when the voltage is greater than the preset voltage value, the following step 490 is executed.

[0152] Step 420, the vehicle controller requests the high-voltage battery system to connect to high voltage, and after the high voltage is connected, the high-voltage conversion module is started to replenish the battery.

[0153] Optionally, the charging process is: the vehicle controller controls the high voltage electricity on the high voltage battery module, and transmits the high voltage electricity to the high voltage conversion module, the high voltage conversion module converts the high voltage electricity into low voltage electricity, and then transmits the low voltage electricity to the battery, completing the charging operation of the battery.

[0154] The process of this step is consistent with the process of the above step 210 and will not be repeated here.

[0155] Step 430, determining whether the vehicle controller enters the step-down conversion mode.

[0156] Optionally, the buck conversion mode is used to indicate a buck conversion circuit, in which the output voltage of the vehicle controller is lower than the input voltage.

[0157] When the output voltage of the vehicle controller is lower than the input voltage, it is determined that the vehicle controller enters the buck conversion mode and the following step 440 is executed; when the output voltage of the vehicle controller is higher than or equal to the input voltage, it is determined that the vehicle controller does not enter the buck conversion mode and the following step 490 is executed.

[0158] Step 440, obtaining the state of charge and charging current of the battery, and determining the charging capacity of the battery.

[0159] Charging current refers to the current value generated by the battery during the charging operation.

[0160] The state of charge is used to characterize the proportion of the electric energy stored in the battery to the total battery capacity of the battery, wherein the total battery capacity of the battery can be the nominal capacity mentioned above.

[0161] The execution process of this step is consistent with the process from step 230 to step 240 above, and will not be repeated here.

[0162] Step 450, determining the relationship between the charging current and the preset current value and determining the relationship between the charging time and the preset time.

[0163] The charging time of the battery when performing the charging operation is obtained. The process of determining the charging time can refer to the above step 230 and will not be described in detail here.

[0164] When the charging current is less than or equal to the preset current value and the charging time is greater than the preset time, execute the following step 460; when the charging current is greater than the preset current value or the charging time is less than or equal to the preset time, repeat the battery charging operation and obtain the battery charge state and charging current.

[0165] Step 460, controlling the battery to stop charging, and determining the battery health of the battery based on the state of charge and the charging current.

[0166] The calculation process of the battery health can refer to the above formula 3.

[0167] In addition, the execution process of this step is consistent with the process of the above-mentioned step 240, and will not be repeated here.

[0168] Step 470: The vehicle controller stores the battery health and determines the relationship between the battery health stored after at least three consecutive charging processes of the battery and the preset battery health value.

[0169] The battery health corresponding to at least three consecutive charging operations of the battery is obtained, that is, at least three charging operations correspond to at least three battery healths.

[0170] When at least three battery healths are less than the preset battery health value, execute the following step 480 ; when any one of the at least three battery healths is greater than the preset battery health value, execute the following step 490 .

[0171] In step 480, the vehicle controller uploads the battery health status corresponding to at least three charging processes to the server.

[0172] The vehicle equipment also includes a remote communication module, and the vehicle equipment completes data communication with other equipment or a server through the remote communication module.

[0173] The vehicle controller sends at least three battery health status corresponding to at least three charging processes to the server through the remote communication module.

[0174] In another optional embodiment, the vehicle controller sends the vehicle information of the vehicle equipment to the server at the same time as sending the battery health status.

[0175] Optionally, the server receives at least three battery health information and first vehicle information. The vehicle information includes a vehicle model of the vehicle device, a production date of the vehicle device, and a geographic location of the vehicle device.

[0176] The server calculates the average health status of at least three battery health statuses. The server database stores the battery health status and the second vehicle information sent by other vehicle devices.

[0177] Based on the first vehicle information, the server selects associated vehicle equipment of the same model / same production date / same geographical location as the vehicle equipment from the database.

[0178] The server then obtains the battery health uploaded by the associated vehicle device; the server determines the size relationship between the average health value and the battery health value corresponding to the associated vehicle device; when the average health value is less than the battery health value corresponding to the associated vehicle device, a battery maintenance strategy is generated and sent to the vehicle device, or, after being sent to the vehicle device, the vehicle device sends it to the associated device that has established a communication connection with the vehicle device. Schematically, the associated device is a smart phone that has established a communication connection with the vehicle device.

[0179] In another optional embodiment, the server selects associated vehicle equipment of the same model / production date / geographic location as the vehicle equipment from a database based on the first vehicle information, obtains the battery health corresponding to the vehicle equipment and the associated vehicle equipment, respectively, and selects the target vehicle equipment with the lowest battery health, generates a battery maintenance strategy based on the battery health of the target vehicle equipment, and sends the maintenance strategy to the target vehicle equipment.

[0180] Step 490: The vehicle controller controls the vehicle equipment to enter a sleep state.

[0181] In the embodiment of the present application, the sleep state is an energy-saving strategy for vehicle equipment. When the vehicle equipment is not in use, each controller in the vehicle equipment enters a low-power state to prevent the vehicle equipment from being powered on for a long time due to static high power consumption.

[0182] In an embodiment of the present application, when the battery information of the battery meets the charging requirements, the battery is controlled to perform a charging operation. During the charging process, the battery health of the battery is determined based on the charging current, state of charge, and key duration of the battery. There is no need to set up additional sensors for the battery to estimate the battery health. The data generated during the charging process can be directly used to intuitively and accurately determine the battery health, which improves the efficiency and accuracy of determining the battery health to a certain extent. Relevant personnel can quickly formulate a maintenance strategy that matches the current usage status of the battery through the battery health, thereby increasing the battery life and ensuring the charging efficiency / discharging efficiency of the battery during the subsequent charging and discharging process.

[0183] See also Figure 5 , which shows a structural block diagram of a battery health status assessment device provided by an exemplary embodiment of the present application. The device includes the following contents.

[0184] An acquisition module 500 is used to acquire battery information of the battery, where the battery information is used to indicate the battery operation status of the battery;

[0185] The control module 510 is used to control the battery to perform a charging operation when the battery information meets the charging requirement, wherein the charging operation is used to indicate an operation of converting a high voltage in a high-voltage battery module into a low voltage and transmitting the low voltage to the battery;

[0186] The acquisition module 500 is further used to acquire the charging current of the battery and the state of charge corresponding to the battery during the process of the battery performing the charging operation, wherein the state of charge is used to represent the proportion of the electric energy stored in the battery to the total battery capacity of the battery;

[0187] A determination module 520, configured to control the battery to stop the charging operation and determine the charging time of the battery when the charging current meets a preset current condition;

[0188] The determination module 520 is further configured to determine the battery health of the battery based on the charging current, the charging time and the state of charge.

[0189] In an optional embodiment, if Figure 6 As shown, the device includes an integration module 530;

[0190] An integration module 530 is used to integrate the charging current by an ampere-hour integration method to obtain a processed charging current;

[0191] The determination module 520 is further configured to determine the charging capacity of the battery based on the processed charging current and the charging duration;

[0192] The determination module 520 is further configured to determine the battery health based on the charging capacity and the state of charge.

[0193] In an optional embodiment, if Figure 6 As shown, the battery information includes the nominal capacity of the battery, and the nominal capacity is used to indicate the amount of electricity discharged by the battery when the battery is under a preset discharge condition;

[0194] The determination module 520 is further configured to determine the battery health based on the nominal capacity, the charging capacity, and the state of charge.

[0195] In an optional embodiment, if Figure 6 As shown, the determination module 520 is further used to input the nominal capacity, the charging capacity and the state of charge into the following formula 3 to determine the battery health; the formula 3:

[0196] In an optional embodiment, if Figure 6 As shown, the acquisition module 500 is also used to acquire the low-voltage load current of the battery during charging and the output current output by the high-voltage battery module;

[0197] The determination module 520 is further configured to determine the charging current based on the low-voltage load current and the output current.

[0198] In an optional embodiment, if Figure 6 As shown, the acquisition module 500 is also used to acquire the working condition data of the battery, and the working condition data is used to indicate the working condition and working environment of the battery;

[0199] A prediction module 540, configured to predict a battery health decay rate of the battery through a Kalman filter;

[0200] The determination module 520 is further configured to determine the number of cycles corresponding to the battery based on the battery health decay rate, the battery health and the operating condition data, wherein the number of cycles is used to evaluate the service life of the battery;

[0201] The generation module 550 is used to formulate a maintenance strategy corresponding to the battery based on the number of cycles.

[0202] In an optional embodiment, if Figure 6 As shown, the generating module 550 is further used to generate a maintenance strategy for the battery when the number of cycles is within the first interval;

[0203] The generating module 550 is further configured to generate a maintenance plan for the battery when the number of cycles is within the second interval, the maintenance plan including a maintenance time and a maintenance location for the battery;

[0204] The generating module 550 is further configured to generate a replacement plan for the battery and trigger an alarm message for the battery when the number of cycles is within a third interval, wherein the alarm message is configured to prompt the user to replace the battery.

[0205] In an optional embodiment, if Figure 6 As shown, the acquisition module 500 is also used to acquire the battery temperature of the battery;

[0206] The generating module 550 is further configured to, when the battery temperature exceeds a temperature threshold, reduce the battery health of the storage battery to obtain a first battery health.

[0207] In the device provided in the embodiment of the present application, when the battery information of the battery meets the charging requirements, the battery is controlled to perform a charging operation. During the charging process, the battery health of the battery is determined based on the charging current, state of charge, and key duration of the battery. There is no need to set up additional sensors for the battery to estimate the battery health. The data generated during the charging process can be directly used to intuitively and accurately determine the battery health, which improves the efficiency and accuracy of determining the battery health to a certain extent. Relevant personnel can quickly formulate a maintenance strategy that matches the current usage status of the battery through the battery health, thereby increasing the battery life and ensuring the charging efficiency / discharging efficiency of the battery during the subsequent charging and discharging process.

[0208] It should be noted that the battery health status assessment device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the battery health status assessment device provided in the above embodiment and the battery health status assessment method embodiment belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0209] Figure 7 The block diagram of the structure of a computer device 600 provided by an exemplary embodiment of the present application is shown. The computer device 600 may be a portable mobile terminal, such as a smart phone, a tablet computer, an MP3 player (Moving Picture Experts Group Audio Layer III), an MP4 player (Moving Picture Experts Group Audio Layer IV), a laptop computer or a desktop computer. The computer device 600 may also be referred to as a user device, a portable terminal, a laptop terminal, a desktop terminal or other names. Optionally, the computer device 600 may also be implemented as a movable device, such as a movable intelligent terminal such as a vehicle-mounted terminal.

[0210] Typically, the computer device 600 includes a processor 601 and a memory 602 .

[0211] The processor 601 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 601 may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor 601 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 601 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 601 may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0212] The memory 602 may include one or more computer-readable storage media, which may be non-transitory. The memory 602 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 602 is used to store at least one instruction, which is used to be executed by the processor 601 to implement the model training method or behavior coding method provided in the method embodiment of the present application.

[0213] In some embodiments, the computer device 600 may also optionally include: a peripheral device interface 603 and at least one peripheral device. The processor 601, the memory 602 and the peripheral device interface 603 may be connected via a bus or a signal line. Each peripheral device may be connected to the peripheral device interface 603 via a bus, a signal line or a circuit board. For example, the peripheral device may include: at least one of a radio frequency circuit 604, a display screen 605, a camera assembly 606, an audio circuit 607, a positioning assembly 615 and a power supply 608.

[0214] The peripheral device interface 603 may be used to connect at least one peripheral device related to I / O (Input / Output) to the processor 601 and the memory 602. In some embodiments, the processor 601, the memory 602, and the peripheral device interface 603 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 601, the memory 602, and the peripheral device interface 603 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.

[0215] The radio frequency circuit 604 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuit 604 communicates with the communication network and other communication devices through electromagnetic signals. The radio frequency circuit 604 converts the electrical signal into an electromagnetic signal for transmission, or converts the received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 604 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, etc. The radio frequency circuit 604 can communicate with other terminals through at least one wireless communication protocol. The wireless communication protocol includes but is not limited to: the World Wide Web, a metropolitan area network, an intranet, various generations of mobile communication networks (2G, 3G, 4G and 5G), a wireless local area network and / or a WiFi (Wireless Fidelity) network. In some embodiments, the radio frequency circuit 604 may also include circuits related to NFC (Near Field Communication), which is not limited in this application.

[0216] The display screen 605 is used to display the UI (User Interface). The UI may include graphics, text, icons, videos, and any combination thereof. When the display screen 605 is a touch display screen, the display screen 605 also has the ability to collect touch signals on the surface or above the surface of the display screen 605. The touch signal can be input to the processor 601 as a control signal for processing. At this time, the display screen 605 can also be used to provide virtual buttons and / or virtual keyboards, also known as soft buttons and / or soft keyboards. In some embodiments, the display screen 605 can be one, set on the front panel of the computer device 600; in other embodiments, the display screen 605 can be at least two, respectively set on different surfaces of the computer device 600 or in a folding design; in other embodiments, the display screen 605 can be a flexible display screen, set on the curved surface or folding surface of the computer device 600. Even, the display screen 605 can also be set to a non-rectangular irregular shape, that is, a special-shaped screen. The display screen 605 can be made of materials such as LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode, organic light-emitting diode).

[0217] The camera assembly 606 is used to capture images or videos. Optionally, the camera assembly 606 includes a front camera and a rear camera. Typically, the front camera is arranged on the front panel of the terminal, and the rear camera is arranged on the back of the terminal. In some embodiments, there are at least two rear cameras, which are any one of a main camera, a depth of field camera, a wide-angle camera, and a telephoto camera, so as to realize the fusion of the main camera and the depth of field camera to realize the background blur function, the fusion of the main camera and the wide-angle camera to realize the panoramic shooting and VR (Virtual Reality) shooting function or other fusion shooting functions. In some embodiments, the camera assembly 606 may also include a flash. The flash can be a monochrome temperature flash or a dual-color temperature flash. A dual-color temperature flash refers to a combination of a warm light flash and a cold light flash, which can be used for light compensation at different color temperatures.

[0218] The audio circuit 607 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, and convert the sound waves into electrical signals and input them into the processor 601 for processing, or input them into the radio frequency circuit 604 to achieve voice communication. For the purpose of stereo acquisition or noise reduction, there may be multiple microphones, which are respectively arranged at different parts of the computer device 600. The microphone may also be an array microphone or an omnidirectional acquisition microphone. The speaker is used to convert the electrical signal from the processor 601 or the radio frequency circuit 604 into sound waves. The speaker may be a traditional film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can not only convert the electrical signal into sound waves audible to humans, but also convert the electrical signal into sound waves inaudible to humans for purposes such as ranging. In some embodiments, the audio circuit 607 may also include a headphone jack.

[0219] The positioning component 615 is used to locate the current geographical location of the computing and device 600 to implement navigation or LBS (Location Based Service). The positioning component 615 can be a positioning component based on the GPS (Global Positioning System) of the United States or the Beidou system of China.

[0220] The power supply 608 is used to power various components in the computer device 600. The power supply 608 can be an alternating current, a direct current, a disposable battery, or a rechargeable battery. When the power supply 608 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery that is charged through a wired line, and a wireless rechargeable battery is a battery that is charged through a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0221] In some embodiments, the computer device 600 further includes one or more sensors 609 , including but not limited to: an acceleration sensor 610 , a gyroscope sensor 611 , a pressure sensor 612 , an optical sensor 613 , and a proximity sensor 614 .

[0222] The acceleration sensor 610 can detect the magnitude of acceleration on the three coordinate axes of the coordinate system established by the computer device 600. For example, the acceleration sensor 610 can be used to detect the components of gravity acceleration on the three coordinate axes. The processor 601 can control the display screen 605 to display the user interface in a horizontal view or a vertical view according to the gravity acceleration signal collected by the acceleration sensor 610. The acceleration sensor 610 can also be used to collect game or user motion data.

[0223] The gyro sensor 611 can detect the body direction and rotation angle of the computer device 600, and the gyro sensor 611 can cooperate with the acceleration sensor 610 to collect the user's 3D actions on the computer device 600. The processor 601 can implement the following functions based on the data collected by the gyro sensor 611: motion sensing (such as changing the UI according to the user's tilt operation), image stabilization during shooting, game control, and inertial navigation.

[0224] The pressure sensor 612 can be set on the side frame of the computer device 600 and / or the lower layer of the display screen 605. When the pressure sensor 612 is set on the side frame of the computer device 600, it can detect the user's grip signal of the computer device 600, and the processor 601 performs left and right hand recognition or shortcut operations according to the grip signal collected by the pressure sensor 612. When the pressure sensor 612 is set on the lower layer of the display screen 605, the processor 601 controls the operability controls on the UI interface according to the user's pressure operation on the display screen 605. The operability controls include at least one of a button control, a scroll bar control, an icon control, and a menu control.

[0225] The optical sensor 613 is used to collect the ambient light intensity. In one embodiment, the processor 601 can control the display brightness of the display screen 605 according to the ambient light intensity collected by the optical sensor 613. For example, when the ambient light intensity is high, the display brightness of the display screen 605 is increased; when the ambient light intensity is low, the display brightness of the display screen 605 is reduced. In another embodiment, the processor 601 can also dynamically adjust the shooting parameters of the camera assembly 606 according to the ambient light intensity collected by the optical sensor 613.

[0226] The proximity sensor 614, also called a distance sensor, is usually disposed on the front panel of the computer device 600. The proximity sensor 614 is used to collect the distance between the user and the front of the computer device 600. In one embodiment, when the proximity sensor 614 detects that the distance between the user and the front of the computer device 600 is gradually decreasing, the processor 601 controls the display screen 605 to switch from the screen-on state to the screen-off state; when the proximity sensor 614 detects that the distance between the user and the front of the computer device 600 is gradually increasing, the processor 601 controls the display screen 605 to switch from the screen-off state to the screen-on state.

[0227] Those skilled in the art will understand that Figure 7 The structure shown in the figure does not constitute a limitation on the computer device 600, and the computer device 600 may include more or less components than shown in the figure, or combine some components, or adopt a different arrangement of components.

[0228] The present application also provides a computer-readable storage medium, in which at least one instruction, at least one program, a code set or an instruction set is stored. The at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement the battery health status assessment method provided in the above method embodiment.

[0229] The present application provides a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the battery health status assessment method provided by the above method embodiment.

[0230] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0231] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for evaluating the health status of a battery, characterized in that: The method comprises: Acquiring battery information of the battery, wherein the battery information is used to indicate the battery operation status of the battery; When the battery information meets the charging requirement, controlling the storage battery to perform a charging operation, wherein the charging operation is used to indicate an operation of converting a high voltage in a high-voltage battery module into a low voltage and transmitting the low voltage to the storage battery; During the process of the battery performing the charging operation, obtaining the charging current of the battery and the state of charge corresponding to the battery, wherein the state of charge is used to characterize the proportion of the electric energy stored in the battery to the total battery capacity of the battery; When the charging current meets the preset current condition, controlling the battery to stop the charging operation and determining the charging time of the battery; A battery health of the battery is determined based on the charging current, the charging time, and the state of charge.

2. The method according to claim 1, characterized in that The determining the battery health of the battery based on the charging current, the charging time and the state of charge includes: Integrating the charging current by an ampere-hour integration method to obtain a processed charging current; Determining a charging capacity of the battery based on the processed charging current and the charging duration; The battery health is determined based on the charging capacity and the state of charge.

3. The method according to claim 2, characterized in that The battery information includes the nominal capacity of the battery, where the nominal capacity is used to indicate the amount of electricity discharged by the battery when the battery is under a preset discharge condition; The determining the battery health based on the charging capacity and the state of charge includes: The battery health is determined based on the nominal capacity, the charge capacity, and the state of charge.

4. The method according to any one of claims 1 to 3, characterized in that: The obtaining the charging current of the battery comprises: Acquire the low-voltage load current of the battery during charging and the output current of the high-voltage battery module; The charging current is determined based on the low-voltage load current and the output current.

5. The method according to any one of claims 1 to 3, characterized in that: After determining the battery health of the battery based on the charging current, the charging time and the state of charge, the method further includes: Acquiring operating condition data of the battery, wherein the operating condition data is used to indicate the working condition and working environment of the battery; Predicting the battery health decay rate of the battery by using a Kalman filter; Determine the number of cycles corresponding to the battery based on the battery health decay rate, the battery health and the operating condition data, where the number of cycles is used to evaluate the service life of the battery; Based on the number of cycles, a maintenance strategy corresponding to the battery is formulated.

6. The method according to claim 5, characterized in that The formulating a maintenance strategy corresponding to the battery based on the number of cycles includes: generating a maintenance strategy for the battery when the number of cycles is within a first range; When the number of possible cycles is within the second interval, generating a maintenance plan for the battery, the maintenance plan including a maintenance time and a maintenance location for the battery; When the number of possible cycles is within a third interval, a replacement plan for the battery is generated and an alarm message for the battery is triggered, wherein the alarm message is used to prompt the user to replace the battery.

7. The method according to any one of claims 1 to 3, characterized in that: After determining the battery health of the battery based on the charging current, the charging time and the state of charge, the method further includes: Acquiring a battery temperature of the battery; When the battery temperature exceeds a temperature threshold, the battery health of the storage battery is reduced to obtain a first battery health.

8. A battery health status assessment device, characterized in that: The device also includes: An acquisition module, used for acquiring battery information of the battery, wherein the battery information is used for indicating the battery operation status of the battery; a control module, configured to control the storage battery to perform a charging operation when the battery information meets the charging requirement, wherein the charging operation is used to indicate an operation of converting a high voltage in a high-voltage battery module into a low voltage and transmitting the low voltage to the storage battery; The acquisition module is further used to acquire the charging current of the battery and the state of charge corresponding to the battery during the process of the battery performing the charging operation, wherein the state of charge is used to represent the proportion of the electric energy stored in the battery to the total battery capacity of the battery; A determination module, configured to control the battery to stop the charging operation and determine the charging time of the battery when the charging current meets a preset current condition; The determination module is further used to determine the battery health of the battery based on the charging current, the charging time and the state of charge.

9. A computer device, characterized in that: The computer device includes a processor and a memory, wherein the memory stores at least one program, and the at least one program is loaded and executed by the processor to implement the battery health status assessment method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The storage medium stores at least one program, and the at least one program is loaded and executed by the processor to implement the battery health status assessment method as described in any one of claims 1 to 7.

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