A method and apparatus for calculating a charging duration

Abstract

The application discloses a charging duration calculation method and device, the method comprises the following steps: determining the charging parameter corresponding to the charging state of the target vehicle; calculating the charging duration estimation value corresponding to the charging state according to the charging parameter corresponding to the charging state; determining the charging duration initial value coefficient corresponding to the charging state according to the charging failure level of the target battery, the target battery is the battery corresponding to the target vehicle; calculating the charging remaining duration initial value corresponding to the charging state according to the charging duration estimation value corresponding to the charging state and the charging duration initial value coefficient corresponding to the charging state. It can be seen that the application can improve the calculation accuracy of the charging remaining duration initial value, improve the information accuracy of the feedback to the user, and thus improve the user experience of the electric vehicle.

Description

Technical Field

[0001] This invention relates to the field of battery charging technology, and in particular to a method and apparatus for calculating charging time. Background Technology

[0002] Electric vehicles are an important mode of transportation for the future. The function of estimating the initial remaining charging time (the time from when the battery starts charging to when it is fully charged) can display an accurate remaining charging time to users, thus providing a reference for their travel planning.

[0003] Currently, common methods for calculating the initial remaining charging time for electric vehicles (EVs) involve dividing the current remaining rated capacity (SOC) by the charging current; or calculating the charging time required for different voltage ranges based on the maximum individual cell voltage, and then summing these values ​​to obtain the overall remaining charging time. Both of these methods result in relatively large errors in the calculated initial remaining charging time, leading to inaccurate information provided to users and negatively impacting their EV user experience. Therefore, proposing a technical solution that improves the accuracy of calculating the initial remaining charging time, thereby enhancing the accuracy of user feedback and ultimately improving the EV user experience, is of paramount importance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method and apparatus for calculating charging time, which can improve the accuracy of calculating the initial value of the remaining charging time, thereby improving the accuracy of the information fed back to the user and thus improving the user's experience of using electric vehicles.

[0005] To address the aforementioned technical problems, the first aspect of this invention discloses a method for calculating charging time, the method comprising:

[0006] Determine the charging parameters corresponding to the charging status of the target vehicle;

[0007] Based on the charging parameters corresponding to the charging state, calculate the estimated charging time corresponding to the charging state;

[0008] Based on the pre-determined charging fault level of the target battery, the initial value coefficient of the charging time corresponding to the charging state is determined, wherein the target battery is the battery corresponding to the target vehicle;

[0009] The initial value of the remaining charging time corresponding to the charging state is calculated based on the estimated charging time value corresponding to the charging state and the initial value coefficient of the charging time corresponding to the charging state.

[0010] As an optional implementation, in the first aspect of the present invention, determining the charging parameters corresponding to the charging state of the target vehicle includes:

[0011] When the target vehicle is in the first charging state, obtain the current temperature of the target battery and the maximum single cell voltage of the target battery.

[0012] Based on the current temperature, the maximum single-cell voltage, and the pre-determined charging request current MAP table, determine the charging duration corresponding to each charging stage in all charging stages of the target battery under the first charging state;

[0013] The charging duration corresponding to all the charging stages is determined as the charging parameter corresponding to the first charging state.

[0014] As an optional implementation, in the first aspect of the present invention, before determining the initial value coefficient of charging duration corresponding to the charging state based on the predetermined charging fault level of the target battery, the method further includes:

[0015] When the target vehicle is in the first charging state, obtain the maximum output current of the charging pile, the first charging request current in the charging request current MAP table, and the second charging request current in the charging request current MAP table.

[0016] The step of determining the initial charging time coefficient corresponding to the charging state based on the pre-determined charging fault level of the target battery includes:

[0017] Based on the pre-determined charging fault level of the target battery, determine the first target current corresponding to the first charging request current and the second target current corresponding to the second charging request current;

[0018] Based on the maximum output current of the charging pile, determine the SOC threshold set corresponding to the maximum output current of the charging pile, wherein the SOC threshold set includes at least one SOC threshold.

[0019] Based on the current parameters, the SOC threshold set, and the charging fault level, a first initial value coefficient corresponding to the first charging state is determined. The current parameters include one or more of the maximum output current of the charging pile, the first target current, and the second target current.

[0020] The step of determining the first initial value coefficient corresponding to the first charging state based on the current parameters, the SOC threshold set, and the charging fault level includes:

[0021] When the current parameters include the maximum output current of the charging pile, the first target current and the second target current, the maximum output current of the charging pile, the first target current and the second target current are compared to obtain the current comparison result.

[0022] Based on the current comparison results and the charging fault level, a matching coefficient calculation formula is determined;

[0023] The first initial value coefficient corresponding to the first charging state is determined based on the current parameters, the SOC threshold set, and the coefficient calculation formula.

[0024] As an optional implementation, in the first aspect of the present invention, determining the matching coefficient calculation formula based on the current comparison result and the charging fault level includes:

[0025] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is no fault, the determination coefficient calculation formula is as follows:

[0026] K1 = 1

[0027] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level five, the determination coefficient calculation formula is as follows:

[0028]

[0029] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level four, the formula for calculating the determination coefficient is:

[0030]

[0031] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level three, the determination coefficient calculation formula is as follows:

[0032]

[0033] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is no fault, the determination coefficient calculation formula is:

[0034]

[0035] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level five, the determination coefficient calculation formula is:

[0036]

[0037] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level four, the determination coefficient calculation formula is:

[0038]

[0039] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level three, the determination coefficient calculation formula is:

[0040]

[0041] When the current comparison result is used to indicate that the maximum output current of the charging pile is less than the second target current, the formula for calculating the determination coefficient is:

[0042]

[0043] Where K1 to K9 are all the first initial value coefficients corresponding to the first charging state, I m For the first target current, I n For the second target current, I c The maximum output current of the charging pile is SOC1 to SOC3, which are all SOC thresholds in the SOC threshold set, and 0.1C is the preset current.

[0044] As an optional implementation, in the first aspect of the present invention, determining the charging parameters corresponding to the charging state of the target vehicle includes:

[0045] When the target vehicle is in the second charging state, the device parameters of the charging device are obtained. The device parameters of the charging device include one or more combinations of the maximum output power of the on-board charger, the CP duty cycle of the charging gun, and the vehicle interface connection status of the charging gun. The on-board charger is the on-board charger of the target vehicle. The charging speed corresponding to the second charging state is less than the charging speed corresponding to the first charging state.

[0046] Based on the device parameters of the charging device, determine the charging mode corresponding to the second charging state, and set the charging mode as the charging parameter corresponding to the second charging state;

[0047] The step of determining the initial charging time coefficient corresponding to the charging state based on the pre-determined charging fault level of the target battery includes:

[0048] Based on the charging mode and the pre-determined charging fault level of the target battery, the second initial value coefficient corresponding to the second charging state is determined.

[0049] As an optional implementation, in the first aspect of the present invention, determining the charging mode corresponding to the second charging state based on the device parameters of the charging device includes:

[0050] Based on the device parameters of the charging equipment, determine whether the target vehicle meets the preset charging conditions;

[0051] When it is determined that the target vehicle meets the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the first charging mode;

[0052] When it is determined that the target vehicle does not meet the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the second charging mode;

[0053] The step of determining whether the target vehicle meets the preset charging conditions based on the device parameters of the charging equipment includes:

[0054] Determine whether the maximum output power of the on-board charger is greater than the preset output power, whether the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and whether the vehicle interface connection status of the charging gun meets the connection status conditions.

[0055] When it is determined that the maximum output power of the on-board charger is greater than the preset output power, and / or the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and / or the vehicle interface connection status of the charging gun meets the connection status condition, the target vehicle is determined to meet the preset charging conditions.

[0056] When it is determined that the maximum output power of the on-board charger is less than or equal to the preset output power, and the CP duty cycle of the charging gun is less than or equal to the preset CP duty cycle, and the vehicle interface connection status of the charging gun does not meet the connection status conditions, it is determined that the target vehicle does not meet the preset charging conditions.

[0057] As an optional implementation, in the first aspect of the present invention, before calculating the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state, the method further includes:

[0058] When the target vehicle is in the second charging state, obtain the current SOC value and the rated capacity of the target battery.

[0059] The step of calculating the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state includes:

[0060] Based on the charging mode, determine the calculation formula for the estimated value corresponding to the charging mode;

[0061] Based on the estimation formula, the current SOC value of the target battery, and the rated capacity of the target battery, calculate the estimated second charging time corresponding to the second charging state.

[0062] As an optional implementation, in the first aspect of the present invention, determining the estimated value calculation formula corresponding to the charging mode based on the charging mode includes:

[0063] When the charging mode is the first charging mode, the formula for calculating the estimated value corresponding to the first charging mode is:

[0064] T i1 = (100 - SOC) 当前 )*C 额定 / 6

[0065] When the charging mode is the second charging mode, the formula for calculating the estimated value corresponding to the second charging mode is:

[0066] T i2 = (100 - SOC) 当前 )*C 额定 / 15.7

[0067] Among them, T i1 T is the estimated second charging time corresponding to the first charging mode. i2 The second charging time estimate corresponding to the second charging mode, SOC 当前 C represents the current SOC value of the target battery. 额定 The rated capacity of the target battery.

[0068] A second aspect of the present invention discloses a device for calculating charging time, the device comprising:

[0069] The determination module is used to determine the charging parameters corresponding to the charging status of the target vehicle.

[0070] The calculation module is used to calculate the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state.

[0071] The determining module is further configured to determine the initial value coefficient of charging time corresponding to the charging state based on the pre-determined charging fault level of the target battery, wherein the target battery is the battery corresponding to the target vehicle.

[0072] The calculation module is further configured to calculate the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time value corresponding to the charging state and the initial value coefficient of the charging time corresponding to the charging state.

[0073] As an optional implementation, in the second aspect of the present invention, the specific method by which the determining module determines the charging parameters corresponding to the charging state of the target vehicle includes:

[0074] When the target vehicle is in the first charging state, obtain the current temperature of the target battery and the maximum single cell voltage of the target battery.

[0075] Based on the current temperature, the maximum single-cell voltage, and the pre-determined charging request current MAP table, determine the charging duration corresponding to each charging stage in all charging stages of the target battery under the first charging state;

[0076] The charging duration corresponding to all the charging stages is determined as the charging parameter corresponding to the first charging state.

[0077] As an optional implementation, in a second aspect of the invention, the apparatus further includes:

[0078] The first acquisition module is used to acquire the maximum output current of the charging pile, the first charging request current in the charging request current MAP table, and the second charging request current in the charging request current MAP table before the determining module determines the initial value coefficient of the charging time corresponding to the charging state according to the pre-determined charging fault level of the target battery, when the charging state of the target vehicle is the first charging state.

[0079] The specific method by which the determining module determines the initial value coefficient of the charging time corresponding to the charging state based on the pre-determined charging fault level of the target battery includes:

[0080] Based on the pre-determined charging fault level of the target battery, determine the first target current corresponding to the first charging request current and the second target current corresponding to the second charging request current;

[0081] Based on the maximum output current of the charging pile, determine the SOC threshold set corresponding to the maximum output current of the charging pile, wherein the SOC threshold set includes at least one SOC threshold.

[0082] Based on the current parameters, the SOC threshold set, and the charging fault level, a first initial value coefficient corresponding to the first charging state is determined. The current parameters include one or more of the maximum output current of the charging pile, the first target current, and the second target current.

[0083] The specific method by which the determining module determines the first initial value coefficient corresponding to the first charging state based on the current parameters, the SOC threshold set, and the charging fault level includes:

[0084] When the current parameters include the maximum output current of the charging pile, the first target current and the second target current, the maximum output current of the charging pile, the first target current and the second target current are compared to obtain the current comparison result.

[0085] Based on the current comparison results and the charging fault level, a matching coefficient calculation formula is determined;

[0086] The first initial value coefficient corresponding to the first charging state is determined based on the current parameters, the SOC threshold set, and the coefficient calculation formula.

[0087] As an optional implementation, in a second aspect of the present invention, the specific method by which the determining module determines the matching coefficient calculation formula based on the current comparison result and the charging fault level includes:

[0088] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is no fault, the determination coefficient calculation formula is as follows:

[0089] K1 = 1

[0090] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level five, the determination coefficient calculation formula is as follows:

[0091]

[0092] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level four, the formula for calculating the determination coefficient is:

[0093]

[0094] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level three, the determination coefficient calculation formula is as follows:

[0095]

[0096] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is no fault, the determination coefficient calculation formula is:

[0097]

[0098] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level five, the determination coefficient calculation formula is:

[0099]

[0100] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level four, the determination coefficient calculation formula is:

[0101]

[0102] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level three, the determination coefficient calculation formula is:

[0103]

[0104] When the current comparison result is used to indicate that the maximum output current of the charging pile is less than the second target current, the formula for calculating the determination coefficient is:

[0105]

[0106] Where K1 to K9 are all the first initial value coefficients corresponding to the first charging state, I m For the first target current, I n For the second target current, I cThe maximum output current of the charging pile is SOC1 to SOC3, which are all SOC thresholds in the SOC threshold set, and 0.1C is the preset current.

[0107] As an optional implementation, in the second aspect of the present invention, the specific method by which the determining module determines the charging parameters corresponding to the charging state of the target vehicle includes:

[0108] When the target vehicle is in the second charging state, the device parameters of the charging device are obtained. The device parameters of the charging device include one or more combinations of the maximum output power of the on-board charger, the CP duty cycle of the charging gun, and the vehicle interface connection status of the charging gun. The on-board charger is the on-board charger of the target vehicle. The charging speed corresponding to the second charging state is less than the charging speed corresponding to the first charging state.

[0109] Based on the device parameters of the charging device, determine the charging mode corresponding to the second charging state, and set the charging mode as the charging parameter corresponding to the second charging state;

[0110] The specific method by which the determining module determines the initial value coefficient of the charging time corresponding to the charging state based on the pre-determined charging fault level of the target battery includes:

[0111] Based on the charging mode and the pre-determined charging fault level of the target battery, the second initial value coefficient corresponding to the second charging state is determined.

[0112] As an optional implementation, in a second aspect of the present invention, the specific method by which the determining module determines the charging mode corresponding to the second charging state based on the device parameters of the charging device includes:

[0113] Based on the device parameters of the charging equipment, determine whether the target vehicle meets the preset charging conditions;

[0114] When it is determined that the target vehicle meets the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the first charging mode;

[0115] When it is determined that the target vehicle does not meet the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the second charging mode;

[0116] The specific methods by which the determining module determines whether the target vehicle meets the preset charging conditions based on the device parameters of the charging equipment include:

[0117] Determine whether the maximum output power of the on-board charger is greater than the preset output power, whether the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and whether the vehicle interface connection status of the charging gun meets the connection status conditions.

[0118] When it is determined that the maximum output power of the on-board charger is greater than the preset output power, and / or the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and / or the vehicle interface connection status of the charging gun meets the connection status condition, the target vehicle is determined to meet the preset charging conditions.

[0119] When it is determined that the maximum output power of the on-board charger is less than or equal to the preset output power, and the CP duty cycle of the charging gun is less than or equal to the preset CP duty cycle, and the vehicle interface connection status of the charging gun does not meet the connection status conditions, it is determined that the target vehicle does not meet the preset charging conditions.

[0120] As an optional implementation, in a second aspect of the invention, the apparatus further includes:

[0121] The second acquisition module is used to acquire the current SOC value and rated capacity of the target battery when the target vehicle is in the second charging state, before the calculation module calculates the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state.

[0122] The specific method by which the calculation module calculates the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state includes:

[0123] Based on the charging mode, determine the calculation formula for the estimated value corresponding to the charging mode;

[0124] Based on the estimation formula, the current SOC value of the target battery, and the rated capacity of the target battery, calculate the estimated second charging time corresponding to the second charging state.

[0125] As an optional implementation, in the second aspect of the present invention, the specific method by which the calculation module determines the estimated value calculation formula corresponding to the charging mode based on the charging mode includes:

[0126] When the charging mode is the first charging mode, the formula for calculating the estimated value corresponding to the first charging mode is:

[0127] T i1 = (100 - SOC) 当前 )*C 额定 / 6

[0128] When the charging mode is the second charging mode, the formula for calculating the estimated value corresponding to the second charging mode is:

[0129] T i2 = (100 - SOC) 当前 )*C 额定 / 15.7

[0130] Among them, T i1 T is the estimated second charging time corresponding to the first charging mode. i2 The second charging time estimate corresponding to the second charging mode, SOC 当前 C represents the current SOC value of the target battery. 额定 The rated capacity of the target battery.

[0131] A third aspect of the present invention discloses another device for calculating charging time, the device comprising:

[0132] Memory containing executable program code;

[0133] A processor coupled to the memory;

[0134] The processor calls the executable program code stored in the memory to execute the charging time calculation method disclosed in the first aspect of the present invention.

[0135] The fourth aspect of the present invention discloses a computer storage medium storing computer instructions, which, when invoked, are used to execute the charging time calculation method disclosed in the first aspect of the present invention.

[0136] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0137] In this embodiment of the invention, the charging parameters corresponding to the charging state of the target vehicle are determined; based on the charging parameters corresponding to the charging state, an estimated charging time is calculated; based on the pre-determined charging fault level of the target battery, an initial charging time coefficient is determined, where the target battery is the battery corresponding to the target vehicle; and based on the estimated charging time and the initial charging time coefficient, an initial value of the remaining charging time is calculated. Therefore, implementing this invention allows for the calculation of the estimated charging time based on the determined charging parameters corresponding to the charging state of the target vehicle, the determination of the initial charging time coefficient based on the charging fault level of the target battery, and the determination of the initial remaining charging time based on the estimated charging time and the initial charging time coefficient. This improves the accuracy of the initial value of the remaining charging time calculation, thereby increasing the accuracy of the information fed back to the user and ultimately enhancing the user experience of the electric vehicle. Attached Figure Description

[0138] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0139] Figure 1 This is a flowchart illustrating a method for calculating charging time disclosed in an embodiment of the present invention;

[0140] Figure 2 This is a flowchart illustrating another method for calculating charging time disclosed in an embodiment of the present invention;

[0141] Figure 3 This is a flowchart illustrating another method for calculating charging time disclosed in an embodiment of the present invention;

[0142] Figure 4 This is a schematic diagram of the structure of a charging time calculation device disclosed in an embodiment of the present invention;

[0143] Figure 5 This is a schematic diagram of another charging time calculation device disclosed in an embodiment of the present invention;

[0144] Figure 6 This is a schematic diagram of the structure of another charging time calculation device disclosed in an embodiment of the present invention. Detailed Implementation

[0145] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0146] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0147] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0148] This invention discloses a method and apparatus for calculating charging time. It can calculate an estimated charging time based on the charging parameters corresponding to the determined charging state of a target vehicle, determine an initial charging time coefficient based on the charging fault level of the target battery, and then determine the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time and the initial charging time coefficient. This improves the accuracy of the initial value calculation for the remaining charging time, thereby improving the accuracy of the information fed back to the user and ultimately enhancing the user experience of electric vehicles. Detailed descriptions follow.

[0149] Example 1

[0150] Please see Figure 1 , Figure 1 This is a flowchart illustrating a method for calculating charging time disclosed in an embodiment of the present invention. Figure 1The described method for calculating charging time can be applied to a device for calculating charging time. This device may include one of a computing device, a computing terminal, a computing system, and a server. The server may include a local server or a cloud server. Furthermore, the charging time calculation device can be applied to vehicles equipped with batteries. These vehicles may include hybrid electric vehicles and / or pure electric vehicles. This invention does not limit the scope of the application. Figure 1 As shown, the method for calculating the charging time may include the following operations:

[0151] 101. Determine the charging parameters corresponding to the charging status of the target vehicle.

[0152] In this invention, the charging state of the target vehicle is one of the preset charging states. The preset charging state may include one or more combinations of a first charging state, a second charging state, and other charging states suitable for vehicle battery charging. Further, the first charging state may be a fast charging state, and the second charging state may be a slow charging state; this embodiment of the invention does not impose limitations. The fast charging state is a DC charging state, and the slow charging state is an AC charging state. The charging state of the target vehicle can be determined by obtaining a flag bit of the charging state. The charging parameters corresponding to the charging state may include one or more combinations of charging durations corresponding to different charging stages, charging modes corresponding to the charging state, battery temperature, battery voltage, and other parameters that affect the calculation of the estimated charging duration; this embodiment of the invention does not impose limitations.

[0153] 102. Based on the charging parameters corresponding to the charging state, calculate the estimated charging time corresponding to the charging state.

[0154] 103. Based on the pre-determined charging fault level of the target battery, determine the initial value coefficient of the charging time corresponding to the charging state.

[0155] In this embodiment of the invention, the target battery is the battery corresponding to the target vehicle; the charging failure level of the target battery is used to indicate the degree of failure of the target battery, wherein the higher the charging failure level, the more serious the degree of failure of the target battery.

[0156] It should be noted that steps 102 and 103 are not sequential; that is, step 102 can occur before or after step 103, or occur simultaneously with step 103. This embodiment of the invention does not impose any limitations.

[0157] 104. Calculate the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time value corresponding to the charging state and the initial value coefficient of the charging time corresponding to the charging state.

[0158] In this embodiment of the invention, optionally, the initial value of the remaining charging time corresponding to the charging state can be the product of the estimated charging time corresponding to the charging state and the coefficient of the initial value of the charging time corresponding to the charging state.

[0159] As can be seen, the method described in the embodiments of the present invention can calculate the estimated charging time based on the charging parameters corresponding to the determined charging state of the target vehicle, determine the initial charging time coefficient based on the charging fault level of the target battery, and then determine the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time and the initial charging time coefficient. This can improve the accuracy of the calculation of the initial value of the remaining charging time, thereby improving the accuracy of the initial value of the remaining charging time, thus improving the accuracy of the information fed back to the user, and ultimately improving the user's experience of using electric vehicles.

[0160] In an optional embodiment, determining the charging parameters corresponding to the charging state of the target vehicle may include the following operations:

[0161] When the target vehicle is in the first charging state, obtain the current temperature of the target battery and the maximum single cell voltage of the target battery.

[0162] Based on the current temperature, maximum single-cell voltage, and a pre-determined charging request current MAP table, determine the charging duration for each charging stage in all charging stages of the target battery in the first charging state.

[0163] The charging duration corresponding to each charging stage is determined as the charging parameter corresponding to the first charging state.

[0164] Calculating the estimated charging time corresponding to a charging state based on the charging parameters can include the following operations:

[0165] Based on the charging duration corresponding to all charging stages, calculate the estimated value of the first charging duration corresponding to the first charging state.

[0166] The current temperature of the target battery can be the temperature value collected by the BMS (Battery Management System) through a temperature sensor; the maximum single-cell voltage of the target battery can be a single value or a range of values, which is not limited in this embodiment of the invention. The charging stage is used to represent the stage of change in the SOC (State of Charge) of the target battery during the charging process corresponding to the first charging state; where SOC represents the remaining capacity of the battery.

[0167] It should be noted that the charging request current MAP table is a two-dimensional table, which can be a 20*30 dimension table. The charging request current MAP table can be looked up based on the current temperature and maximum single-cell voltage of the target battery to find the corresponding charging request current, thereby calculating the charging time for different charging stages.

[0168] Optionally, the sum of the charging durations corresponding to all charging stages can be determined as the charging parameters corresponding to the first charging state.

[0169] For example, assuming the current temperature of the target battery is 25°C and the maximum single-cell voltage of the target battery is 3.446V to 3.7V, looking up the charging request current MAP table, the corresponding charging request current is 0.5C. If the target battery's SOC is to increase from 0% to 15%, then the charging time for this charging phase is: T1 = 15% * C 额定 / 0.5C, where C 额定 The target battery's rated capacity is given. Similarly, assuming the target battery's maximum single-cell voltage is 3.7V to 3.823V, referring to the charging request current MAP table yields a corresponding charging request current of 0.7C. To increase the target battery's SOC from 15% to 35%, the charging duration for this phase is: T2 = 20% * C. 额定 / 0.7C, ..., and so on, obtain the charging time T1, T2, ..., T n We can obtain the sum of the charging times for the n charging stages: T0 = T1 + T2 + ... + T n .

[0170] As can be seen, this optional embodiment can, when the target vehicle is in the first charging state, look up the charging request current MAP table based on the current temperature and maximum single cell voltage of the target battery. This allows the charging duration corresponding to each charging stage in the first charging state to be determined, and the charging duration corresponding to all charging stages is determined as the charging parameter. This improves the accuracy of determining the charging duration corresponding to each charging stage, thereby improving the accuracy of determining the charging parameter corresponding to the first charging state, and further improving the accuracy of calculating the initial value of the remaining charging time.

[0171] In this optional embodiment, the method may further include the following operations before determining the initial charging duration coefficient corresponding to the charging state based on the pre-determined charging fault level of the target battery:

[0172] When the target vehicle is in the first charging state, obtain the maximum output current of the charging pile, the first charging request current in the charging request current MAP table, and the second charging request current in the charging request current MAP table.

[0173] The process of determining the initial charging time coefficient corresponding to the charging state based on the pre-determined charging fault level of the target battery may include the following operations:

[0174] Based on the pre-determined charging fault level of the target battery, determine the first target current corresponding to the first charging request current and the second target current corresponding to the second charging request current.

[0175] Based on the maximum output current of the charging pile, determine the SOC threshold set corresponding to the maximum output current of the charging pile. The SOC threshold set includes at least one SOC threshold.

[0176] Based on the current parameters, the SOC threshold set, and the charging fault level, the first initial value coefficient corresponding to the first charging state is determined. The current parameters include one or more of the maximum output current of the charging pile, the first target current, and the second target current.

[0177] The process of determining the first initial value coefficient corresponding to the first charging state based on current parameters, the set of SOC thresholds, and the charging fault level may include the following operations:

[0178] When the current parameters include the maximum output current of the charging pile, the first target current and the second target current, the maximum output current of the charging pile, the first target current and the second target current are compared to obtain the current comparison result.

[0179] Based on the current comparison results and the charging fault level, a matching coefficient calculation formula is determined;

[0180] Based on the current parameters, the set of SOC thresholds, and the coefficient calculation formula, the first initial value coefficient corresponding to the first charging state is determined.

[0181] For example, the first charging request current in the charging request current MAP table can be the maximum current found in the MAP table, and the second charging request current in the MAP table can be the minimum current found in the MAP table. The first target current and the second target current can vary with the fault level of the target battery. For example: when the charging fault level is fault level 5, both the first target current and the second target current are 0.1C; when the charging fault level is fault level 4, the first target current is equal to 50% of the first charging request current, and the second target current is equal to 50% of the second charging request current; when the charging fault level is fault level 3, the first target current is equal to 75% of the first charging request current, and the second target current is equal to 75% of the second charging request current; when the charging fault level is less than fault level 3, the first target current is equal to the first charging request current, and the second target current is equal to the second charging request current.

[0182] The SOC threshold set includes SOC thresholds corresponding to different charging request currents. Furthermore, the corresponding SOC threshold can be found in the charging request current MAP table based on the charging request current. The SOC threshold set may include a first SOC threshold, a second SOC threshold, and a third SOC threshold, where the first SOC threshold is less than the second SOC threshold, and the second SOC threshold is less than the third SOC threshold. For example, the first SOC threshold can be the SOC value in the charging request current MAP table when the charging request current equals the maximum output current of the charging pile; similarly, the second SOC threshold can be the SOC value in the charging request current MAP table when the charging request current equals 75% of the maximum output current of the charging pile; and the third SOC threshold can be the SOC value in the charging request current MAP table when the charging request current equals 50% of the maximum output current of the charging pile.

[0183] As can be seen, this optional embodiment can also determine the first target current corresponding to the first charging request current and the second target current corresponding to the second charging request current based on the charging fault level of the target battery, and determine the SOC threshold set based on the maximum output current of the charging pile. Based on the current parameters, the SOC threshold set, and the charging fault level, it can determine the first initial value coefficient corresponding to the first charging state, which can improve the accuracy of determining the first initial value coefficient, thereby improving the accuracy and reliability of the first initial value coefficient, and thus helping to improve the accuracy of calculating the initial value of the remaining charging time. In addition, it can also determine the corresponding current comparison result based on the maximum output current of the charging pile, the first target current, and the second target current, and determine the coefficient calculation formula based on the current comparison result and the charging fault level, and calculate the first initial value coefficient corresponding to the first charging state based on the coefficient calculation formula, which can improve the accuracy of determining the coefficient calculation formula, thereby further improving the accuracy of determining the first initial value coefficient.

[0184] In this optional embodiment, further optionally, determining a matching coefficient calculation formula based on the current comparison results and the charging fault level may include the following operations:

[0185] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is no fault, the formula for calculating the determination coefficient is:

[0186] K1 = 1

[0187] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level five, the formula for calculating the determination coefficient is:

[0188]

[0189] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level four, the formula for calculating the determination coefficient is:

[0190]

[0191] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level three, the formula for calculating the determination coefficient is:

[0192]

[0193] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is no fault, the formula for calculating the determination coefficient is:

[0194]

[0195] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level five, the formula for calculating the determination coefficient is:

[0196]

[0197] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level four, the formula for calculating the determination coefficient is:

[0198]

[0199] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level three, the formula for calculating the determination coefficient is:

[0200]

[0201] When the current comparison result is used to indicate that the maximum output current of the charging pile is less than the second target current, the formula for calculating the determination coefficient is:

[0202]

[0203] Where K1 to K9 are all the first initial value coefficients corresponding to the first charging state, I m For the first target current, I n For the second target current, I c This represents the maximum output current of the charging pile. SOC1 to SOC3 are all SOC thresholds in the SOC threshold set, and 0.1C is the preset current.

[0204] It should be noted that SOC1, SOC2 and SOC3 can be the first SOC threshold, the second SOC threshold and the third SOC threshold as described in the embodiments of the present invention, respectively.

[0205] As can be seen, this optional embodiment can further explain the conditions for determining the coefficient calculation formula, as well as the specific coefficient calculation formula, which can further improve the accuracy of determining the coefficient calculation formula, thereby improving the accuracy of the first initial value coefficient, and thus helping to improve the calculation accuracy of the initial value of the remaining charging time.

[0206] Furthermore, in this embodiment of the invention, for example, when the target vehicle is in a first charging state, the formula for calculating the initial value of the remaining charging time corresponding to the first charging state is as follows:

[0207] T dc =K*T0

[0208] Among them, T dc Let T0 be the initial value of the remaining charging time corresponding to the first charging state, K be the first initial value coefficient corresponding to the first charging state, and T0 be the estimated charging time corresponding to the second charging state.

[0209] Example 2

[0210] Please see Figure 2 , Figure 2 This is a flowchart illustrating a method for calculating charging time disclosed in an embodiment of the present invention. Figure 2 The described method for calculating charging time can be applied to a device for calculating charging time. This device may include one of a computing device, a computing terminal, a computing system, and a server. The server may include a local server or a cloud server. Furthermore, the charging time calculation device can be applied to vehicles equipped with batteries. These vehicles may include hybrid electric vehicles and / or pure electric vehicles. This invention does not limit the scope of the application. Figure 2 As shown, the method for calculating the charging time may include the following operations:

[0211] 201. When the target vehicle is in the second charging state, obtain the device parameters of the charging equipment.

[0212] In this embodiment of the invention, the device parameters of the charging equipment include one or more combinations of the following: the maximum output power of the on-board charger, the CP duty cycle of the charging gun, and the vehicle interface connection state of the charging gun. The on-board charger is the on-board charger of the target vehicle, and its maximum output power can be denoted as P, with units of kW. The CP duty cycle of the charging gun can be denoted as Pct. The vehicle interface connection state of the charging gun can be the CC mode, denoted as M. For example, according to the national standard GB / T 18487 for electric vehicle charging, the vehicle interface connection state of the charging gun can include states A to F. The charging speed corresponding to the second charging state is less than the charging speed corresponding to the first charging state, wherein the second charging state can be a slow charging state.

[0213] 202. Determine the charging mode corresponding to the second charging state based on the equipment parameters of the charging device.

[0214] In this embodiment of the invention, when the second charging state is a slow charging state, the charging mode corresponding to the second charging state can be a slow charging mode. For example, according to the national standard GB / T 18487 for electric vehicle charging, the slow charging mode can include four charging modes, namely mode one, mode two, mode three and mode four.

[0215] 203. Set the charging mode to the charging parameters corresponding to the second charging state.

[0216] 204. Based on the charging parameters corresponding to the charging state, calculate the estimated charging time corresponding to the charging state.

[0217] 205. Determine the second initial value coefficient corresponding to the second charging state based on the charging mode and the pre-determined charging fault level of the target battery.

[0218] In this embodiment of the invention, the second initial value coefficient corresponding to the second charging state can be a predetermined coefficient, or it can be a matching calculation formula determined based on the charging mode and the charging fault level. The coefficient calculated in this embodiment of the invention is not limited.

[0219] For example, when the charging mode is mode two above, the second initial value coefficient is determined to be F1 = 1; when the charging mode is mode three above and the charging fault level is fault level five, the second initial value coefficient is determined to be F2 = 15 / 15.7; when the charging mode is mode three above and the charging fault level is less than or equal to fault level four, the second initial value coefficient is determined to be F3 = 1.

[0220] 206. Calculate the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time value corresponding to the charging state and the initial value coefficient of the charging time corresponding to the charging state.

[0221] In this embodiment of the invention, the initial value coefficient of the charging duration corresponding to the charging state is the second initial value coefficient corresponding to the second charging state.

[0222] For further detailed descriptions of steps 204-206 in this embodiment of the invention, please refer to the detailed description of steps 102-104 in Embodiment 1. These descriptions will not be repeated in this embodiment of the invention.

[0223] As can be seen, the method described in the embodiments of the present invention can calculate the estimated charging time based on the charging parameters corresponding to the determined charging state of the target vehicle, determine the initial charging time coefficient based on the charging fault level of the target battery, and then determine the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time and the initial charging time coefficient. This improves the accuracy of the calculation of the initial value of the remaining charging time, thereby improving the accuracy of the information fed back to the user and ultimately enhancing the user's experience with electric vehicles. Furthermore, when the target vehicle is in a second charging state, the method can determine the charging mode corresponding to the second charging state based on the equipment parameters of the charging device, and use the charging mode corresponding to the second charging state as a charging parameter. It can also determine the second initial value coefficient corresponding to the second charging state based on the charging mode and the charging fault level. This improves the flexibility and accuracy of determining the charging parameters, thereby improving the accuracy of the calculation of the initial value of the remaining charging time and ultimately enhancing the accuracy of the initial value of the remaining charging time.

[0224] In an optional embodiment, determining the charging mode corresponding to the second charging state based on the device parameters of the charging device may include the following operations:

[0225] Based on the equipment parameters of the charging equipment, determine whether the target vehicle meets the preset charging conditions;

[0226] When it is determined that the target vehicle meets the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the first charging mode.

[0227] When it is determined that the target vehicle does not meet the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the second charging mode.

[0228] Determining whether the target vehicle meets the preset charging conditions based on the charging equipment parameters may include the following operations:

[0229] Determine whether the maximum output power of the on-board charger is greater than the preset output power, whether the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and whether the vehicle interface connection status of the charging gun meets the connection status conditions.

[0230] When it is determined that the maximum output power of the on-board charger is greater than the preset output power, and / or the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and / or the vehicle interface connection status of the charging gun meets the connection status conditions, the target vehicle is determined to meet the preset charging conditions.

[0231] When it is determined that the maximum output power of the on-board charger is less than or equal to the preset output power, and the CP duty cycle of the charging gun is less than or equal to the preset CP duty cycle, and the vehicle interface connection status of the charging gun does not meet the connection status conditions, it is determined that the target vehicle does not meet the preset charging conditions.

[0232] Optionally, determining whether the vehicle interface connection status of the charging gun meets the connection status conditions may include the following operations:

[0233] Determine whether the vehicle interface connection status of the charging gun is the preset connection status;

[0234] When it is determined that the vehicle interface connection status of the charging gun is the preset connection status, it is determined that the vehicle interface connection status of the charging gun meets the connection status conditions.

[0235] When it is determined that the vehicle interface connection status of the charging gun is not the preset connection status, it is determined that the vehicle interface connection status of the charging gun does not meet the connection status conditions.

[0236] For example, when the charging mode corresponding to the second charging state is a slow charging mode, the first charging mode can be mode two of the slow charging mode in the national standard GB / T 18487 for electric vehicle charging, and the second charging mode can be mode three of the slow charging mode in the national standard GB / T 18487 for electric vehicle charging. The preset output power can be 5KW, the preset CP duty cycle can be 26%, and the preset connection state can include the vehicle interface connection state where the vehicle interface is fully connected and the charging cable capacity meets the requirements, such as state E and / or state F in the national standard GB / T 18487 for electric vehicle charging.

[0237] As can be seen, this optional embodiment can determine the charging mode as the first charging mode when it is determined that the target vehicle meets the preset charging conditions, and determine the charging mode as the second charging mode when it is determined that the target vehicle does not meet the preset charging conditions, thereby improving the accuracy of determining the charging mode. Furthermore, it can also determine that the target vehicle meets the preset charging conditions based on whether the maximum output power of the on-board charger and / or the CP duty cycle of the charging gun and / or the vehicle connection status of the charging gun meet the corresponding conditions. When at least one parameter meets the corresponding condition, it is determined that the target vehicle meets the preset charging conditions; when all parameters do not meet the corresponding conditions, it is determined that the target vehicle does not meet the preset charging conditions. This can improve the accuracy of determining whether the target vehicle meets the preset charging conditions, thereby further improving the accuracy of determining the charging mode.

[0238] In this optional embodiment, optionally, before calculating the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state, the method may further include the following operations:

[0239] When the target vehicle is in the second charging state, obtain the current SOC value and rated capacity of the target battery.

[0240] Calculating the estimated charging time corresponding to a charging state based on the charging parameters can include the following operations:

[0241] Based on the charging mode, determine the formula for calculating the estimated value corresponding to the charging mode;

[0242] Based on the estimation formula, the current SOC value of the target battery, and the rated capacity of the target battery, calculate the estimated value of the second charging time corresponding to the second charging state.

[0243] As can be seen, this optional embodiment can also determine the estimation formula corresponding to the charging mode according to the charging mode, and calculate the second charging time estimate corresponding to the second charging state according to the obtained current SOC value of the target battery and the rated capacity of the target battery through the estimation formula. This can improve the accuracy of determining the second charging time estimate, thereby improving the accuracy of the second charging time estimate, and thus helping to improve the accuracy of calculating the initial value of the remaining charging time.

[0244] In this optional embodiment, further optionally, determining the estimated value calculation formula corresponding to the charging mode based on the charging mode may include the following operations:

[0245] When the charging mode is the first charging mode, the formula for calculating the estimated value corresponding to the first charging mode is:

[0246] T i1 = (100 - SOC) 当前 )*C 额定 / 6

[0247] When the charging mode is the second charging mode, the formula for calculating the estimated value corresponding to the second charging mode is:

[0248] T i2 = (100 - SOC) 当前 )*C 额定 / 15.7

[0249] Among them, T i1 T is the estimated second charging time for the first charging mode. i2 The second charging time estimate corresponding to the second charging mode, SOC 当前 C represents the current SOC value of the target battery. 额定 The rated capacity of the target battery.

[0250] The first charging mode can be the second mode mentioned above, and the second charging mode can be the third mode mentioned above.

[0251] As can be seen, this optional embodiment can also specifically explain the specific estimation formulas corresponding to the first charging mode and the second charging mode, which can improve the accuracy of determining the estimation formula, thereby improving the accuracy of determining the second charging time estimate, and further improving the accuracy of the second charging time estimate.

[0252] Furthermore, in this embodiment of the invention, for example, when the target vehicle is in a second charging state, the formula for calculating the initial value of the remaining charging time corresponding to the second charging state is as follows:

[0253] T ac =F*T i

[0254] Among them, T ac T is the initial value of the remaining charging time corresponding to the second charging state, F is the coefficient of the second initial value corresponding to the second charging state, and T is the initial value of the remaining charging time. i This is the estimated charging time for the second charging state.

[0255] In another alternative embodiment, the method may further include the following operations:

[0256] Obtain the target charging time value for the target user, where the target user is the user corresponding to the target vehicle;

[0257] Compare the target charging time with the initial remaining charging time to obtain the duration comparison result;

[0258] Based on the comparison of duration, a charging state change scheme is determined.

[0259] The target charging time value is used to represent the user's expected charging time for the target vehicle; the charging state change scheme includes at least the target charging state, and may also include one or more combinations of the charging time corresponding to the target charging state, the charging request current corresponding to the target charging state, and the charging time corresponding to the charging request current, wherein the target charging state includes at least one charging state.

[0260] As can be seen, this optional embodiment can determine the charging state change scheme by comparing the user's target charging time with the calculated initial value of the remaining charging time. This can improve the matching degree between the charging state change scheme and user needs, thereby increasing user satisfaction with the charging scheme and improving the user's experience of using electric vehicles.

[0261] In this optional embodiment, determining the charging state change scheme based on the duration comparison result may include the following operations:

[0262] When the time comparison result indicates that the initial value of the remaining charging time is greater than the target value of the charging time, the system determines whether the target device meets the charging acceleration conditions based on the vehicle parameters of the target vehicle and the output parameters of the charging device. The target device includes the target vehicle and the charging device.

[0263] When it is determined that the target device meets the conditions for charging acceleration, a charging status change scheme is determined based on the vehicle parameters of the target vehicle and the output parameters of the charging equipment.

[0264] When the time comparison result indicates that the initial value of the remaining charging time is less than or equal to the target value of the charging time, the charging state change scheme is determined as the current charging scheme.

[0265] The method may also include the following operations:

[0266] When it is determined that the target device does not meet the conditions for charging speed-up, a prompt is sent to the target user. The prompt indicates that the current charging capacity of the target device cannot meet the target charging time value.

[0267] For example, assuming the user sets a target charging time of 30 minutes, and the calculated initial remaining charging time for the slow charging state is 35 minutes, it can be determined that the initial remaining charging time is greater than the target charging time. At this point, it is determined whether the target vehicle and charging equipment meet the conditions for accelerating charging (e.g., the conditions for switching from slow charging to fast charging, or the conditions for increasing the charging request current). If both the target vehicle and the charging equipment meet the conditions for accelerating charging, the target charging state in the charging state change scheme is determined. The target charging state may include fast charging and / or slow charging, and the charging time corresponding to each target charging state is determined, as well as the charging request current corresponding to each target charging state and the charging time corresponding to each charging request current.

[0268] As can be seen, this optional embodiment can also determine whether the target device meets the charging speed-up condition when the initial value of the remaining charging time is greater than the target value of the charging time. If the charging speed-up condition is met, the charging scheme is adjusted. When the initial value of the remaining charging time is less than or equal to the target value of the charging time, the current charging scheme is maintained, which can improve charging efficiency and thus improve user satisfaction with the charging scheme.

[0269] In this optional embodiment, further optionally, before determining the charging state change scheme based on the vehicle parameters of the target vehicle and the output parameters of the charging equipment, the method may also include the following operations:

[0270] Determine the battery protection scheme based on the degree of charging failure of the target battery;

[0271] The process of determining a charging status change scheme based on the target vehicle's parameters and the charging equipment's output parameters may include the following operations:

[0272] Based on the battery protection scheme, the vehicle parameters of the target vehicle, and the output parameters of the charging equipment, determine the charging state change scheme.

[0273] As can be seen, this optional embodiment can also determine the battery protection scheme based on the degree of battery failure, and determine the charging state change scheme based on the battery protection scheme and the parameters of the target device. This can improve the safety and reliability of the charging state change scheme, thereby extending battery life and improving user satisfaction with the charging scheme.

[0274] Furthermore, in this embodiment of the invention, the specific process of the method for calculating the charging time can be as follows: Figure 3 As shown, Figure 3 This is a flowchart illustrating a method for calculating charging time according to an embodiment of the present invention. The specific operations of this method may include:

[0275] Obtain the flag indicating the charging status of the target vehicle;

[0276] When the charging status flag is set to fast charging status, the accumulated time T0 (estimated charging time) is calculated using the charging request current MAP table. Next, the relationship between the charging pile's maximum output current, maximum charging request current, and minimum request current is compared. If the charging pile's maximum output current is greater than or equal to the maximum charging request current, and the target battery's charging fault level is charging level 5, then the fast charging time coefficient is determined to be K2; if the charging fault level is charging level 4, then the fast charging time coefficient is determined to be K3; if the charging fault level is charging level 3, then the fast charging time coefficient is determined to be K4; if the charging fault level is below charging level 3... If the fault level is Level 5, the fast charging time coefficient is determined to be K1; if the maximum output current of the charging pile is less than the maximum charging request current but greater than or equal to the minimum charging request current, the fast charging time coefficient is determined to be K6 if the fault level is Level 5; K7 if the fault level is Level 4; K8 if the fault level is Level 3; K5 if the fault level is lower than Level 3; and K9 if the maximum output current of the charging pile is less than the minimum charging request current. Then, according to formula T... dc =K*T0 calculates the initial value T of the fast charging time. dc ;

[0277] When the charging status flag is set to slow charging, determine if the current conditions meet the requirements of Mode 2. If they do, the charging mode is set to Mode 2, and the slow charging time coefficient is set to F1. If the current conditions do not meet the requirements of Mode 2, the charging mode is set to Mode 3. If the charging fault level is level 5, the slow charging time coefficient is set to F2. If the charging fault level is below level 5, the slow charging time coefficient is set to F3. Next, calculate the estimated slow charging time T corresponding to Mode 2. i1 Calculate the estimated charging time T corresponding to slow charging mode 3. i2 Then according to formula T ac =F*T i The initial value T of the slow charging time was calculated. ac .

[0278] Example 3

[0279] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of a charging time calculation device disclosed in an embodiment of the present invention. Figure 4 The described charging time calculation device may include one of a computing device, a computing terminal, a computing system, and a server, wherein the server includes a local server or a cloud server, and the charging time calculation device can be applied to vehicles equipped with batteries, wherein vehicles equipped with batteries may include hybrid electric vehicles and / or pure electric vehicles, and the embodiments of the present invention are not limited thereto. Figure 4 As shown, the device for calculating the charging time may include:

[0280] The determining module 301 is used to determine the charging parameters corresponding to the charging status of the target vehicle;

[0281] The calculation module 302 is used to calculate the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state.

[0282] The determining module 301 is also used to determine the initial value coefficient of charging time corresponding to the charging state based on the pre-determined charging fault level of the target battery, wherein the target battery is the battery corresponding to the target vehicle.

[0283] The calculation module 302 is also used to calculate the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time corresponding to the charging state and the initial value coefficient of the charging time corresponding to the charging state.

[0284] As can be seen, the apparatus described in the embodiments of the present invention can calculate the estimated charging time based on the charging parameters corresponding to the determined charging state of the target vehicle, determine the initial charging time coefficient based on the charging fault level of the target battery, and then determine the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time and the initial charging time coefficient. This can improve the accuracy of the calculation of the initial value of the remaining charging time, thereby improving the accuracy of the initial value of the remaining charging time, thus improving the accuracy of the information fed back to the user, and ultimately improving the user's experience of using electric vehicles.

[0285] In an optional embodiment, the specific method by which the determining module 301 determines the charging parameters corresponding to the charging state of the target vehicle may include:

[0286] When the target vehicle is in the first charging state, obtain the current temperature of the target battery and the maximum single cell voltage of the target battery.

[0287] Based on the current temperature, maximum single-cell voltage, and a pre-determined charging request current MAP table, determine the charging duration for each charging stage in all charging stages of the target battery in the first charging state.

[0288] The charging duration corresponding to each charging stage is determined as the charging parameter corresponding to the first charging state.

[0289] As can be seen, the apparatus described in this optional embodiment can, when the target vehicle is in the first charging state, look up the charging request current MAP table based on the current temperature and maximum single-cell voltage of the target battery. This allows the charging duration corresponding to each charging stage in the first charging state to be determined, and the charging duration corresponding to all charging stages is determined as the charging parameter. This improves the accuracy of determining the charging duration corresponding to each charging stage, thereby improving the accuracy of determining the charging parameter corresponding to the first charging state, and further improving the accuracy of calculating the initial value of the remaining charging time.

[0290] In this optional embodiment, optionally, such as Figure 5 As shown, the device may further include:

[0291] The first acquisition module 303 is used to acquire the maximum output current of the charging pile, the first charging request current in the charging request current MAP table, and the second charging request current in the charging request current MAP table when the charging state of the target vehicle is the first charging state, before the determination module 301 determines the initial value coefficient of the charging time corresponding to the charging state based on the pre-determined charging fault level of the target battery.

[0292] The specific method by which the determining module 301 determines the initial value coefficient of the charging time corresponding to the charging state based on the pre-determined charging fault level of the target battery may include:

[0293] Based on the pre-determined charging fault level of the target battery, determine the first target current corresponding to the first charging request current and the second target current corresponding to the second charging request current.

[0294] Based on the maximum output current of the charging pile, determine the SOC threshold set corresponding to the maximum output current of the charging pile. The SOC threshold set includes at least one SOC threshold.

[0295] Based on the current parameters, the SOC threshold set, and the charging fault level, the first initial value coefficient corresponding to the first charging state is determined. The current parameters include one or more of the maximum output current of the charging pile, the first target current, and the second target current.

[0296] The specific method by which the determining module 301 determines the first initial value coefficient corresponding to the first charging state based on the current parameters, the SOC threshold set, and the charging fault level may include:

[0297] When the current parameters include the maximum output current of the charging pile, the first target current and the second target current, the maximum output current of the charging pile, the first target current and the second target current are compared to obtain the current comparison result.

[0298] Based on the current comparison results and the charging fault level, a matching coefficient calculation formula is determined;

[0299] Based on the current parameters, the set of SOC thresholds, and the coefficient calculation formula, the first initial value coefficient corresponding to the first charging state is determined.

[0300] As can be seen, the apparatus described in this optional embodiment can also determine the first target current corresponding to the first charging request current and the second target current corresponding to the second charging request current based on the charging fault level of the target battery, and determine the SOC threshold set based on the maximum output current of the charging pile. It can also determine the first initial value coefficient corresponding to the first charging state based on the current parameters, the SOC threshold set, and the charging fault level, thereby improving the accuracy of determining the first initial value coefficient, thus improving the precision and reliability of the first initial value coefficient, and further improving the accuracy of calculating the initial value of the remaining charging time. Furthermore, it can also determine the corresponding current comparison result based on the maximum output current of the charging pile, the first target current, and the second target current, and determine the coefficient calculation formula based on the current comparison result and the charging fault level, and calculate the first initial value coefficient corresponding to the first charging state based on the coefficient calculation formula, thereby improving the accuracy of determining the coefficient calculation formula and further improving the accuracy of determining the first initial value coefficient.

[0301] In this optional embodiment, further optionally, the specific method by which the determining module 301 determines the matching coefficient calculation formula based on the current comparison result and the charging fault level may include:

[0302] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is no fault, the formula for calculating the determination coefficient is:

[0303] K1 = 1

[0304] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level five, the formula for calculating the determination coefficient is:

[0305]

[0306] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level four, the formula for calculating the determination coefficient is:

[0307]

[0308] When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level three, the formula for calculating the determination coefficient is:

[0309]

[0310] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is no fault, the formula for calculating the determination coefficient is:

[0311]

[0312] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level five, the formula for calculating the determination coefficient is:

[0313]

[0314] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level four, the formula for calculating the determination coefficient is:

[0315]

[0316] When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level three, the formula for calculating the determination coefficient is:

[0317]

[0318] When the current comparison result is used to indicate that the maximum output current of the charging pile is less than the second target current, the formula for calculating the determination coefficient is:

[0319]

[0320] Where K1 to K9 are all the first initial value coefficients corresponding to the first charging state, I m For the first target current, I n For the second target current, I c This represents the maximum output current of the charging pile. SOC1 to SOC3 are all SOC thresholds in the SOC threshold set, and 0.1C is the preset current.

[0321] As can be seen, the apparatus described in this optional embodiment can further specify the conditions for determining the coefficient calculation formula and the specific coefficient calculation formula, which can further improve the accuracy of determining the coefficient calculation formula, thereby improving the accuracy of the first initial value coefficient, and thus helping to improve the calculation accuracy of the initial value of the remaining charging time.

[0322] In another optional embodiment, the specific method by which the determining module 301 determines the charging parameters corresponding to the charging state of the target vehicle may include:

[0323] When the target vehicle is in the second charging state, the device parameters of the charging device are obtained. The device parameters of the charging device include one or more combinations of the maximum output power of the on-board charger, the CP duty cycle of the charging gun, and the vehicle interface connection status of the charging gun. The on-board charger is the on-board charger of the target vehicle. The charging speed corresponding to the second charging state is less than the charging speed corresponding to the first charging state.

[0324] Based on the device parameters of the charging equipment, determine the charging mode corresponding to the second charging state, and set the charging mode as the charging parameters corresponding to the second charging state.

[0325] The specific method by which the determining module 301 determines the initial value coefficient of the charging time corresponding to the charging state based on the pre-determined charging fault level of the target battery may include:

[0326] Based on the charging mode and the pre-determined charging fault level of the target battery, determine the second initial value coefficient corresponding to the second charging state.

[0327] As can be seen, the apparatus described in this optional embodiment can determine the charging mode corresponding to the second charging state based on the device parameters of the charging equipment when the target vehicle is in the second charging state, and determine the charging mode corresponding to the second charging state as the charging parameter. It can also determine the second initial value coefficient corresponding to the second charging state based on the charging mode and the charging fault level. This can improve the flexibility and accuracy of determining the charging parameters, thereby improving the accuracy of calculating the initial value of the remaining charging time, and further improving the accuracy of the initial value of the remaining charging time.

[0328] In this optional embodiment, the specific method by which the determining module 301 determines the charging mode corresponding to the second charging state based on the device parameters of the charging device may include:

[0329] Based on the equipment parameters of the charging equipment, determine whether the target vehicle meets the preset charging conditions;

[0330] When it is determined that the target vehicle meets the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the first charging mode.

[0331] When it is determined that the target vehicle does not meet the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the second charging mode.

[0332] The specific method by which the determining module 301 determines whether the target vehicle meets the preset charging conditions based on the equipment parameters of the charging equipment may include:

[0333] Determine whether the maximum output power of the on-board charger is greater than the preset output power, whether the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and whether the vehicle interface connection status of the charging gun meets the connection status conditions.

[0334] When it is determined that the maximum output power of the on-board charger is greater than the preset output power, and / or the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and / or the vehicle interface connection status of the charging gun meets the connection status conditions, the target vehicle is determined to meet the preset charging conditions.

[0335] When it is determined that the maximum output power of the on-board charger is less than or equal to the preset output power, and the CP duty cycle of the charging gun is less than or equal to the preset CP duty cycle, and the vehicle interface connection status of the charging gun does not meet the connection status conditions, it is determined that the target vehicle does not meet the preset charging conditions.

[0336] As can be seen, the apparatus described in this optional embodiment can also determine the charging mode as a first charging mode when it is determined that the target vehicle meets the preset charging conditions, and determine the charging mode as a second charging mode when it is determined that the target vehicle does not meet the preset charging conditions, thereby improving the accuracy of determining the charging mode; and can also determine that the target vehicle meets the preset charging conditions when at least one parameter meets the corresponding conditions, and determine that the target vehicle does not meet the preset charging conditions when all parameters do not meet the corresponding conditions, based on whether the maximum output power of the on-board charger and / or the CP duty cycle of the charging gun and / or the vehicle connection status of the charging gun meets the corresponding conditions, thereby improving the accuracy of determining whether the target vehicle meets the preset charging conditions, and further improving the accuracy of determining the charging mode.

[0337] In this optional embodiment, further optional, such as Figure 5 As shown, the device may further include:

[0338] The second acquisition module 304 is used to acquire the current SOC value and rated capacity of the target battery when the target vehicle is in the second charging state, before the calculation module 302 calculates the estimated charging time value corresponding to the charging state based on the charging parameters corresponding to the charging state.

[0339] The specific method by which the calculation module 302 calculates the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state may include:

[0340] Based on the charging mode, determine the formula for calculating the estimated value corresponding to the charging mode;

[0341] Based on the estimation formula, the current SOC value of the target battery, and the rated capacity of the target battery, calculate the estimated value of the second charging time corresponding to the second charging state.

[0342] As can be seen, the apparatus described in this optional embodiment can also determine the estimation formula corresponding to the charging mode according to the charging mode, and calculate the second charging time estimate corresponding to the second charging state according to the current SOC value of the target battery and the rated capacity of the target battery through the estimation formula. This can improve the accuracy of determining the second charging time estimate, thereby improving the accuracy of the second charging time estimate, and thus helping to improve the accuracy of calculating the initial value of the remaining charging time.

[0343] In this optional embodiment, further optionally, the specific method by which the calculation module 302 determines the estimated value calculation formula corresponding to the charging mode based on the charging mode may include:

[0344] When the charging mode is the first charging mode, the formula for calculating the estimated value corresponding to the first charging mode is:

[0345] T i1 = (100 - SOC) 当前 )*C 额定 / 6

[0346] When the charging mode is the second charging mode, the formula for calculating the estimated value corresponding to the second charging mode is:

[0347] T i2 = (100 - SOC) 当前 )*C 额定 / 15.7

[0348] Among them, T i1 T is the estimated second charging time for the first charging mode. i2 The second charging time estimate corresponding to the second charging mode, SOC 当前 C represents the current SOC value of the target battery. 额定 The rated capacity of the target battery.

[0349] As can be seen, the apparatus described in this optional embodiment can specifically explain the calculation formula for the specific estimated value when the charging modes are the first charging mode and the second charging mode, which can improve the accuracy of determining the calculation formula for the estimated value, thereby improving the accuracy of determining the estimated value of the second charging time, and further improving the accuracy of the estimated value of the second charging time.

[0350] Example 4

[0351] Please see Figure 6 , Figure 6 This is a schematic diagram of the structure of another charging time calculation device disclosed in an embodiment of the present invention. For example... Figure 6 As shown, the device for calculating the charging time may include:

[0352] Memory 401 storing executable program code;

[0353] Processor 402 coupled to memory 401;

[0354] The processor 402 calls the executable program code stored in the memory 401 to execute the steps in the charging time calculation method described in Embodiment 1 or Embodiment 2 of the present invention.

[0355] Example 5

[0356] This invention discloses a computer storage medium storing computer instructions. When these computer instructions are invoked, they are used to execute the steps in the charging time calculation method described in Embodiment 1 or Embodiment 2 of this invention.

[0357] Example 6

[0358] This invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform the steps in the charging time calculation method described in Embodiment 1 or Embodiment 2.

[0359] The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0360] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, including read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-Erasable Programmable Read-Only Memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0361] Finally, it should be noted that the charging time calculation method and apparatus disclosed in the embodiments of the present invention are merely preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention, not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for calculating charging time, characterized in that, The method includes: The charging parameters corresponding to the charging state of the target vehicle are determined. When the charging state of the target vehicle is the first charging state, the current temperature and the maximum single-cell voltage of the target battery are obtained. Based on the current temperature, the maximum single-cell voltage, and a pre-determined charging request current MAP table, the charging duration corresponding to each charging stage in all charging stages of the target battery in the first charging state is determined. The charging duration corresponding to all charging stages is determined as the charging parameters corresponding to the first charging state. The target battery is the battery corresponding to the target vehicle. Based on the charging parameters corresponding to the charging state, calculate the estimated charging time corresponding to the charging state; Based on the pre-determined charging fault level of the target battery, determine the initial value coefficient of the charging time corresponding to the charging state; Calculate the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time value and the initial value coefficient of the charging time corresponding to the charging state. Before determining the initial charging duration coefficient corresponding to the charging state based on the pre-determined charging fault level of the target battery, the method further includes: When the target vehicle is in the first charging state, obtain the maximum output current of the charging pile, the first charging request current in the charging request current MAP table, and the second charging request current in the charging request current MAP table. The step of determining the initial charging time coefficient corresponding to the charging state based on the pre-determined charging fault level of the target battery includes: Based on the pre-determined charging fault level of the target battery, determine the first target current corresponding to the first charging request current and the second target current corresponding to the second charging request current; Based on the maximum output current of the charging pile, determine the SOC threshold set corresponding to the maximum output current of the charging pile, wherein the SOC threshold set includes at least one SOC threshold. Based on the current parameters, the SOC threshold set, and the charging fault level, a first initial value coefficient corresponding to the first charging state is determined. The current parameters include one or more of the maximum output current of the charging pile, the first target current, and the second target current. The step of determining the first initial value coefficient corresponding to the first charging state based on the current parameters, the SOC threshold set, and the charging fault level includes: When the current parameters include the maximum output current of the charging pile, the first target current and the second target current, the maximum output current of the charging pile, the first target current and the second target current are compared to obtain the current comparison result. Based on the current comparison results and the charging fault level, a matching coefficient calculation formula is determined; The first initial value coefficient corresponding to the first charging state is determined based on the current parameters, the SOC threshold set, and the coefficient calculation formula.

2. The method for calculating charging time according to claim 1, characterized in that, The step of determining the matching coefficient calculation formula based on the current comparison result and the charging fault level includes: When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is no fault, the determination coefficient calculation formula is as follows: When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level five, the determination coefficient calculation formula is as follows: When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level four, the formula for calculating the determination coefficient is: When the current comparison result indicates that the maximum output current of the charging pile is greater than or equal to the first target current, and the charging fault level is fault level three, the determination coefficient calculation formula is as follows: When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is no fault, the determination coefficient calculation formula is: When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level five, the determination coefficient calculation formula is: When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level four, the determination coefficient calculation formula is: When the current comparison result indicates that the maximum output current of the charging pile is less than the first target current and the maximum output current of the charging pile is greater than or equal to the second target current, and the charging fault level is fault level three, the determination coefficient calculation formula is: When the current comparison result is used to indicate that the maximum output current of the charging pile is less than the second target current, the formula for calculating the determination coefficient is: in, K 1~ K 9 are all the first initial value coefficients corresponding to the first charging state. I m For the first target current, I n The second target current, I c This refers to the maximum output current of the charging pile. SOC 1~ SOC 3 represents the SOC threshold in the SOC threshold set, and 0.1C represents the preset current.

3. The method for calculating charging time according to claim 1, characterized in that, The charging parameters corresponding to the charging status of the target vehicle include: When the target vehicle is in the second charging state, the device parameters of the charging device are obtained. The device parameters of the charging device include one or more combinations of the maximum output power of the on-board charger, the CP duty cycle of the charging gun, and the vehicle interface connection status of the charging gun. The on-board charger is the on-board charger of the target vehicle. The charging speed corresponding to the second charging state is less than the charging speed corresponding to the first charging state. Based on the device parameters of the charging device, determine the charging mode corresponding to the second charging state, and set the charging mode as the charging parameter corresponding to the second charging state; The step of determining the initial charging time coefficient corresponding to the charging state based on the pre-determined charging fault level of the target battery includes: Based on the charging mode and the pre-determined charging fault level of the target battery, the second initial value coefficient corresponding to the second charging state is determined.

4. The method for calculating charging time according to claim 3, characterized in that, Determining the charging mode corresponding to the second charging state based on the device parameters of the charging device includes: Based on the device parameters of the charging equipment, determine whether the target vehicle meets the preset charging conditions; When it is determined that the target vehicle meets the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the first charging mode; When it is determined that the target vehicle does not meet the preset charging conditions, the charging mode corresponding to the second charging state is determined to be the second charging mode; The step of determining whether the target vehicle meets the preset charging conditions based on the device parameters of the charging equipment includes: Determine whether the maximum output power of the on-board charger is greater than the preset output power, whether the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and whether the vehicle interface connection status of the charging gun meets the connection status conditions. When it is determined that the maximum output power of the on-board charger is greater than the preset output power, and / or the CP duty cycle of the charging gun is greater than the preset CP duty cycle, and / or the vehicle interface connection status of the charging gun meets the connection status condition, the target vehicle is determined to meet the preset charging conditions. When it is determined that the maximum output power of the on-board charger is less than or equal to the preset output power, and the CP duty cycle of the charging gun is less than or equal to the preset CP duty cycle, and the vehicle interface connection status of the charging gun does not meet the connection status conditions, it is determined that the target vehicle does not meet the preset charging conditions.

5. The method for calculating charging time according to claim 3 or 4, characterized in that, Before calculating the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state, the method further includes: When the target vehicle is in the second charging state, obtain the current SOC value and the rated capacity of the target battery. The step of calculating the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state includes: Based on the charging mode, determine the calculation formula for the estimated value corresponding to the charging mode; Based on the estimation formula, the current SOC value of the target battery, and the rated capacity of the target battery, calculate the estimated second charging time corresponding to the second charging state.

6. The method for calculating charging time according to claim 5, characterized in that, The step of determining the estimated value calculation formula corresponding to the charging mode based on the charging mode includes: When the charging mode is the first charging mode, the formula for calculating the estimated value corresponding to the first charging mode is: When the charging mode is the second charging mode, the formula for calculating the estimated value corresponding to the second charging mode is: in, T i1 This is the estimated second charging time value corresponding to the first charging mode. T i2 This is the estimated second charging time value corresponding to the second charging mode. SOC 当前 The current SOC value of the target battery. C 额定 The rated capacity of the target battery.

7. A device for calculating charging time, characterized in that, The device includes: A determination module is used to determine the charging parameters corresponding to the charging state of the target vehicle. Specifically, when the target vehicle is in a first charging state, the module acquires the current temperature and maximum single-cell voltage of the target battery. Based on the current temperature, the maximum single-cell voltage, and a pre-determined charging request current MAP table, it determines the charging duration corresponding to each charging stage in all charging phases of the target battery under the first charging state. The module then determines the charging duration corresponding to all charging stages as the charging parameters corresponding to the first charging state. The target battery is the battery corresponding to the target vehicle. The calculation module is used to calculate the estimated charging time corresponding to the charging state based on the charging parameters corresponding to the charging state. The determining module is further configured to determine the initial value coefficient of charging time corresponding to the charging state based on the pre-determined charging fault level of the target battery. The calculation module is also used to calculate the initial value of the remaining charging time corresponding to the charging state based on the estimated charging time value corresponding to the charging state and the initial value coefficient of the charging time corresponding to the charging state. Before determining the initial charging duration coefficient corresponding to the charging state based on the pre-determined charging fault level of the target battery, the calculation module is further configured to: When the target vehicle is in the first charging state, obtain the maximum output current of the charging pile, the first charging request current in the charging request current MAP table, and the second charging request current in the charging request current MAP table. Wherein, the calculation module is further used to determine the initial value coefficient of charging time corresponding to the charging state based on the pre-determined charging fault level of the target battery, and the calculation module is also used to: Based on the pre-determined charging fault level of the target battery, determine the first target current corresponding to the first charging request current and the second target current corresponding to the second charging request current; Based on the maximum output current of the charging pile, determine the SOC threshold set corresponding to the maximum output current of the charging pile, wherein the SOC threshold set includes at least one SOC threshold. Based on the current parameters, the SOC threshold set, and the charging fault level, a first initial value coefficient corresponding to the first charging state is determined. The current parameters include one or more of the maximum output current of the charging pile, the first target current, and the second target current. Wherein, the calculation module is further configured to determine the first initial value coefficient corresponding to the first charging state based on the current parameters, the SOC threshold set, and the charging fault level, and the calculation module is further configured to: When the current parameters include the maximum output current of the charging pile, the first target current and the second target current, the maximum output current of the charging pile, the first target current and the second target current are compared to obtain the current comparison result. Based on the current comparison results and the charging fault level, a matching coefficient calculation formula is determined; The first initial value coefficient corresponding to the first charging state is determined based on the current parameters, the SOC threshold set, and the coefficient calculation formula.

8. A device for calculating charging time, characterized in that, The device includes: Memory containing executable program code; A processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the charging time calculation method as described in any one of claims 1-6.

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