A method and device for displaying remaining charging time

Abstract

The present invention discloses a method and device for displaying the remaining charging time. Through the method and device for displaying the remaining charging time, the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC input by the user are obtained; the first remaining time is determined according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC; the second remaining time for terminal correction is determined according to the current battery SOC and the target charging SOC; and the display of the remaining charging time is controlled according to the first remaining time and the second remaining time. In this way, by monitoring the ambient temperature, the battery temperature, and the thermal management, and comprehensively considering various charging influencing factors, the accuracy of the remaining battery charging time is effectively improved, and the display of the remaining charging time can be quickly adjusted based on the change of the working condition.

Description

Technical Field

[0001] The present invention relates to the field of charging technology, and in particular to a method and device for displaying remaining charging time. Background Art

[0002] With the continuous advancement of electric vehicle technology, the use of electric vehicles has gradually become popular. In the future, electric vehicles will not only compete on the quality of the vehicle itself, but also on the consumer experience of using the vehicle.

[0003] When charging the power battery of an electric vehicle, users often want to know how long it takes to fully charge the expected amount of electricity. Most of the common methods for calculating the remaining charging time on the market simply rely on the charging MAP table. However, there are many other external factors that affect the charging time. Therefore, the calculated remaining charging time is less accurate and may delay the user's other trips. Summary of the invention

[0004] In view of the above problems, a method and device for displaying the remaining charging time are proposed. By monitoring the ambient temperature, battery temperature, and thermal management, and comprehensively considering various charging influencing factors, the accuracy of calculating the remaining battery charging time is effectively improved, and the display of the remaining charging time can be quickly adjusted based on changes in operating conditions.

[0005] According to a first aspect of the present invention, a method for displaying remaining charging time is provided, comprising:

[0006] Obtain battery temperature, ambient temperature, current battery SOC, and target charging SOC entered by the user;

[0007] Determining a first remaining time according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC;

[0008] Determining a second remaining time for terminal correction according to the current battery SOC and the target charging SOC;

[0009] The display of the charging remaining time is controlled according to the first remaining time and the second remaining time.

[0010] Optionally, the method further includes:

[0011] During the charging process, detecting whether there is a triggering event that disturbs the remaining charging time;

[0012] If there is a trigger event, determine whether the trigger event is an active trigger event;

[0013] If it is an active trigger event, the remaining charging time after the active trigger event is updated is adjusted to display;

[0014] If it is a non-active triggering event, a jump suppression process is performed on the change of the remaining charging time.

[0015] Optionally, the active triggering event includes switching operation of a target power-consuming accessory and adjusting a target charging SOC.

[0016] Optionally, determining the first remaining time according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC includes:

[0017] Determine the basic remaining time based on the current battery SOC and target charging SOC;

[0018] According to the battery temperature and the ambient temperature, the temperature compensation time is determined based on a pre-trained temperature rise model; the basic remaining time and the temperature compensation time constitute the first remaining time.

[0019] Optionally, the method further includes:

[0020] If the target charging SOC is less than the first target threshold, the temperature compensation time is converged according to the temperature rise coefficient to obtain the converged temperature compensation time; the basic remaining time and the converged temperature compensation time constitute the first remaining time.

[0021] Optionally, determining the second remaining time according to the current battery SOC and the target charging SOC includes:

[0022] If the target charging SOC is equal to 100%, the current battery SOC is compared with the second target threshold value, and the second remaining time is calculated according to the comparison result;

[0023] If the target charging SOC is less than 100%, the second remaining time is set to 0.

[0024] Optionally, comparing the current battery SOC with a second target threshold, and calculating a second remaining time according to the comparison result, includes:

[0025] If the current battery SOC is less than the second target threshold, the second remaining time is determined based on the average value of the historical full charge correction time;

[0026] If the current battery SOC is greater than or equal to the second target threshold, the second remaining time is determined according to the current battery cell voltage and charging current based on a preset time relationship table, where the preset time relationship table is a relationship table between the battery cell voltage, charging current and the second remaining time.

[0027] According to a second aspect of the present invention, there is provided a charging remaining time display device, comprising:

[0028] The acquisition module is used to obtain the battery temperature, ambient temperature, current battery SOC and the target charging SOC input by the user;

[0029] A first determination module, configured to determine a first remaining time according to a battery temperature, an ambient temperature, a current battery SOC, and a target charging SOC;

[0030] A second determination module, configured to determine a second remaining time for terminal correction according to a current battery SOC and a target charging SOC;

[0031] The control module is used to control the display of the remaining charging time according to the first remaining time and the second remaining time.

[0032] According to a third aspect of the present invention, a controller is provided, the controller comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the aforementioned method for displaying the remaining charging time.

[0033] According to a fourth aspect of the present invention, a vehicle is provided, the vehicle comprising a vehicle body and a controller installed in the vehicle body, wherein when the vehicle is charging, the controller executes the aforementioned method for displaying the remaining charging time.

[0034] The above one or more technical solutions in the embodiments of this specification have at least the following technical effects:

[0035] The embodiments of this specification provide a method and device for displaying the remaining charging time. Through the method and device for displaying the remaining charging time, the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC input by the user are obtained; the first remaining time is determined according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC; the second remaining time for terminal correction is determined according to the current battery SOC and the target charging SOC; the display of the remaining charging time is controlled according to the first remaining time and the second remaining time. In this way, by monitoring the ambient temperature, the battery temperature, and the thermal management, and comprehensively considering various charging influencing factors, the accuracy of the calculation of the remaining battery charging time is effectively improved, and the display of the remaining charging time can be quickly adjusted based on changes in working conditions.

[0036] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference figures are used to represent the same parts throughout the accompanying drawings.

[0038] In the attached picture:

[0039] Figure 1 A flow chart of a method for displaying remaining charging time in an embodiment of the present invention is shown.

[0040] Figure 2 A schematic diagram of charging at a target temperature in an embodiment of the present invention is shown.

[0041] Figure 3 A schematic diagram of charging at various temperatures in an embodiment of the present invention is shown.

[0042] Figure 4 A block diagram of a charging remaining time display device in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In one usage scenario, after parking the vehicle, the user wants to charge the vehicle's power battery (hereinafter referred to as the battery). The current battery SOC is 30%, and the user hopes to fully charge the power battery, that is, the target charging SOC of the power battery is hoped to be 100%. After the user plugs in the charging gun and starts charging, the vehicle-side display shows that the remaining charging time is 4 hours. The user waited in the car. Since it was winter, the user turned on the air conditioner in the car. After nearly an hour, the remaining charging time was displayed as 3 hours and 45 minutes. The user believes that the remaining charging time is not accurate, and the user has a meeting to attend later, which affects the user's subsequent itinerary.

[0048] Based on the above content, this embodiment proposes a method for displaying the remaining charging time. By monitoring the ambient temperature, battery temperature, and thermal management, and comprehensively considering various charging influencing factors, it effectively improves the accuracy of calculating the remaining battery charging time, and can timely adjust the display of the remaining charging time based on changes in operating conditions.

[0049] Combination Figure 1 As shown in the flowchart, the charging remaining time display method includes steps 101 to 104:

[0050] Step 101: Obtaining battery temperature, ambient temperature, current battery SOC, and target charging SOC input by a user;

[0051] In this embodiment, the battery temperature refers to the actual temperature of the battery currently detected by the sensor. The battery temperature varies due to different seasons, environments, and charging stages. For example, in winter, if the vehicle is placed in an open-air parking lot, the battery temperature is generally lower than 10 degrees; after the battery has been charged for a period of time, the heat generated by the battery charging will increase the battery temperature. In summer, if the vehicle is placed in an open-air parking lot, the battery temperature is generally higher than 30 degrees; after the battery has been charged for a period of time, the thermal management system will cool the power battery, and the battery temperature may be 25 degrees at this time.

[0052] Ambient temperature refers to the temperature of the environment in which the vehicle is located. Current battery SOC refers to the remaining power of the current battery. Target charging SOC refers to the desired charge amount set by the user when charging. For example, when the user is charging the power battery, the current battery SOC of the power battery is 20%, and the user expects the target charging SOC to be 80% after the charging is completed; or the user expects the target charging SOC to be 100% after the charging is completed. If the user does not set the target charging SOC, or the vehicle does not have the function of setting the target charging SOC, the default target charging SOC is 100% when the power battery is charged.

[0053] Step 102: determining a first remaining time according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC;

[0054] In this embodiment, after obtaining the battery temperature, ambient temperature, current battery SOC, and target charging SOC input by the user, the first remaining time can be determined according to the battery temperature, ambient temperature, current battery SOC, and target charging SOC input by the user. The first remaining time is not the charging remaining time, but a part of the charging remaining time.

[0055] The first remaining time may include two parts, one of which is the objective basic remaining time calculated based on the current battery SOC and the target charging SOC. The other part is the temperature compensation time determined based on the battery temperature and the ambient temperature. The battery temperature has a target ideal temperature range (for example, 20-30 degrees) during charging. Within the target ideal temperature range, the temperature has little effect on the remaining charging time. If the battery temperature is not within the target ideal temperature range during charging, the effect of temperature on the remaining charging time needs to be considered.

[0056] In an optional implementation, the step of determining the first remaining time according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC may include:

[0057] Determine the basic remaining time based on the current battery SOC and target charging SOC;

[0058] According to the battery temperature and the ambient temperature, the temperature compensation time is determined based on a pre-trained temperature rise model; the basic remaining time and the temperature compensation time constitute the first remaining time.

[0059] Among them, the basic remaining time is not affected by temperature and is the time calculated within the target ideal temperature range. It is mainly related to the current battery SOC currently detected and the target charging SOC expected to be charged. It should be noted that if the user changes or adjusts the target charging SOC during the charging process, the calculated basic remaining time will also change.

[0060] For example, combining Figure 2 As shown, Figure 2 The charging map is given in . Different SOCs will have different constant current requests, assuming that the temperature is constant during the entire charging period:

[0061] The basic remaining time for this charge from the current battery SOC of 0 to the target charging SOC of 100% is T 基础 =t1+t2+t3+t4. For example, if a battery pack is 100Ah, we can understand that its capacity is 100A current and it is continuously charged for 1 hour. Then the time corresponding to t1-t4 is:

[0062] t1=100Ah*(60%-0) / 140A=0.43h

[0063] t2=100Ah*(80%-60%) / 100A=0.2h

[0064] t3=100Ah*(90%-80%) / 60A=0.17h

[0065] t4=100Ah*(100%-90%) / 20A=0.5h

[0066] The ideal remaining time for 0-100% SOC charging is the sum of the above time calculations, and the charging current is based on the battery charging map. In actual applications, the charging SOC may not always start from 0, and it may not always end at 100%. For the above scenarios, the following calculation formula is introduced:

[0067]

[0068] Where n is the current battery SOC stage, n is 1-11. Current is the charging current of the current stage. SOC is the charge capacity of the current stage. The entire charging stage is divided into 11 segments based on the charging map, and the corresponding remaining charging time is calculated respectively, so as to obtain T1-T11 respectively, and then T1-T11 is accumulated to obtain T 基础 For example, if the current battery SOC of a certain charge is 12% and the target charge SOC is 99%, then T 基础 It is in the following table n The accumulation of.

[0069]

[0070] The following processing is required for Current(n-1) in the above. Based on the set current value Cmap of the software parameters at normal temperature, the set current value and the maximum current capacity of the charging pile at the current moment are respectively subtracted from the accessory consumption current to obtain two corresponding effective current values ​​C 有效 , the smaller of the two is taken as the intermediate current value C 中间 , after the shunt condition judgment (shunt condition judgment: under DC charging conditions, VCU requests current Creq to the charging pile, and the actual output current Cact of the charging pile, when Cact / Creq < threshold value, and lasts for 20s, the charging pile is considered to be shunted, the maximum current calculated above does not exceed Cact, and the threshold value can be 75%), the final calculated current Current (n-1) will be obtained. As the battery is used, the battery health will gradually decrease, and its aging state is what we need to consider. The processing for this is to multiply the charging current by the current battery health coefficient.

[0071] The temperature compensation time is related to the battery temperature and the ambient temperature. It is easy to understand that the charging time will be longer under low or high temperature conditions. When the current battery SOC and the target charging SOC are the same, the battery pack will limit the charging current in order to protect the battery under low or high temperature conditions. This embodiment takes low temperature as an example for explanation. Figure 3 As shown. Among them, lines L2 and L3 indicate the charging current status at normal temperature and low temperature. Under the action of battery thermal management in the middle and late stages, after the battery temperature rises, its charging performance is basically the same. The difference between low temperature and normal temperature charging is mainly reflected in the battery heating stage at the beginning of charging.

[0072] Based on this, this embodiment obtains multiple groups of temperature compensation time under different battery temperature and ambient temperature conditions through a large number of calibration tests, and uses them as sample data to train the initial temperature rise model to obtain a trained temperature rise model. Among them, the initial temperature rise model can select a neural network model with multiple inputs and single result output from the prior art, and this embodiment does not limit this.

[0073] In addition, this embodiment also sets the convergence of the temperature compensation time. If the target charging SOC set by the user is relatively small, such as 70%, and the SOC at the beginning of charging is not very small, for example, 40%. When charging is close to the target charging SOC, the basic remaining time has reached 0, but the temperature compensation time still has a lot of time, resulting in inaccurate display of the time when we charge to the end. Therefore, the compensation of the temperature rise coefficient is introduced, and the temperature rise compensation time will converge as it approaches the target charging SOC.

[0074] Specifically, if the target charging SOC is less than the first target threshold, the temperature compensation time is converged according to the temperature rise coefficient to obtain the converged temperature compensation time; the basic remaining time and the converged temperature compensation time constitute the first remaining time. The first target threshold can be set according to actual conditions and is not limited in this embodiment.

[0075] Step 103: Determine a second remaining time for terminal correction according to the current battery SOC and the target charging SOC;

[0076] In the actual charging process, there is an accuracy error in SOC, and its correction is often made in the last charging current stage, that is, the low-current charging stage, based on the battery cell voltage correction. The charging end time at this time is determined based on the battery cell voltage. It should be noted that the second remaining time in this embodiment is the correction time for the end of full charge. If the target charging SOC is less than 100% (the minimum adjustment interval of the charging SOC is 1%), the second remaining time is 0; when the target charging SOC is equal to 100%, the current battery SOC is compared with the second target threshold, and the second remaining time is calculated based on the comparison result. It should be noted that the current battery SOC is not only the battery power at the beginning of charging, but also the battery power detected in real time.

[0077] In an optional implementation, comparing the current battery SOC with the second target threshold, and calculating the second remaining time according to the comparison result, includes:

[0078] If the current battery SOC is less than the second target threshold, the second remaining time is determined based on the average value of the historical full charge correction time;

[0079] If the current battery SOC is greater than or equal to the second target threshold, the second remaining time is determined according to the current battery cell voltage and charging current based on a preset time relationship table, where the preset time relationship table is a relationship table between the battery cell voltage, charging current and the second remaining time.

[0080] Among them, the charging cycle of the second remaining time is divided into two parts, which is judged by the current battery SOC obtained during the charging process. For example, when the current battery SOC is less than the second target threshold (for example, the second target threshold is 99%), the second remaining time can be set to the average value of the historical full charge correction time corresponding to the previous DC full charge or AC full charge, such as the average time of the previous ten times from 99% to full charge.

[0081] When the current battery SOC is greater than or equal to the second target threshold (for example, the second target threshold is 99%), the second remaining time is obtained by looking up the preset time relationship table based on the current battery cell voltage and charging current, and the following table can be used as a reference:

[0082]

[0083] Step 104: Control the display of the remaining charging time according to the first remaining time and the second remaining time.

[0084] In this embodiment, after determining the first remaining time and the second remaining time, the remaining charging time can be determined according to the first remaining time and the second remaining time. That is, the remaining charging time is the sum of the first remaining time and the second remaining time. Based on the remaining charging time calculated in each detection cycle, the remaining charging time is displayed on the vehicle-side screen or on a mobile terminal associated with the vehicle.

[0085] In addition, during the display process, slight current fluctuations will cause the display of the remaining charging time to fluctuate, which is not a good experience. This embodiment increases the filter coefficient, and the filter coefficient will select fast or slow filtering according to different situations. In different situations, the change in the remaining charging time we expect is different.

[0086] Based on this, in an optional implementation, the method further includes:

[0087] During the charging process, detect whether there is a trigger event that disturbs the remaining charging time;

[0088] If there is a trigger event, determine whether the trigger event is an active trigger event;

[0089] If it is an active trigger event, the remaining charging time after the active trigger event is updated is adjusted to display;

[0090] If it is a non-active triggering event, a jump suppression process is performed on the change of the remaining charging time.

[0091] In this embodiment, trigger event detection and judgment are performed to determine how to handle changes in the remaining charging time. Trigger events can be divided into two categories: changes in the remaining charging time caused by active user operations, including switching operations on target electrical accessories (for example, turning on and off the air conditioner) and adjusting the target charging SOC. When performing such operations, the user has expectations for changes in the remaining charging time. In this case, the updated remaining charging time can be adjusted immediately without slowly filtering the past; the second type is non-active trigger events based on objective factors, such as changes in the charging map, current fluctuations, SOC corrections, etc. caused by an increase in battery temperature. In this case, it is necessary to suppress the change in the remaining charging time as much as possible to avoid causing trouble to customers.

[0092] In actual implementation: FltChg is the bit status monitoring corresponding to the different working conditions we identify, which monitors the following corresponding event triggers respectively: 0000 0001 is the switching of the air conditioning switch, 0000 0010 is to enter charging, 0000 0100 is to adjust the charging cut-off SOC, and 0000 1000 is the charging pile diversion. When the software recognizes that the above bit is set to 1, our remaining charging time immediately uses FltQuick fast filtering, and the battery temperature can jump immediately; if it is not the above event, FltSlow slow filtering is used to calculate the time change smoothly.

[0093] In summary, the embodiment of this specification provides a method for displaying the remaining charging time. Through a method and device for displaying the remaining charging time, the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC input by the user are obtained; the first remaining time is determined according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC; the second remaining time for terminal correction is determined according to the current battery SOC and the target charging SOC; and the display of the remaining charging time is controlled according to the first remaining time and the second remaining time. In this way, by monitoring the ambient temperature, the battery temperature, and the thermal management, a variety of charging influencing factors are comprehensively considered, and the terminal error correction is also considered. The charging time of the terminal is not a fixed calibration parameter. When the terminal is fully charged, there is a terminal self-learning time to fill. The estimated time will gradually change with the battery usage scenario, thereby effectively improving the accuracy of the remaining battery charging time, and being able to accurately identify charging sudden scenarios, and can quickly and effectively update the calculated time, bringing users a better car experience.

[0094] Based on the same inventive concept, Figure 4 As shown, an embodiment of the present invention further provides a device for displaying remaining charging time, comprising: an acquisition module, a first determination module, a second determination module and a control module.

[0095] The acquisition module is used to obtain the battery temperature, ambient temperature, current battery SOC and the target charging SOC input by the user;

[0096] The first determination module is used to determine a first remaining time according to the battery temperature, the ambient temperature, the current battery SOC and the target charging SOC;

[0097] The second determination module is used to determine a second remaining time for terminal correction according to the current battery SOC and the target charging SOC;

[0098] The control module is used to control the display of the remaining charging time according to the first remaining time and the second remaining time.

[0099] In an optional implementation, the control module further includes:

[0100] During the charging process, detecting whether there is a triggering event that disturbs the remaining charging time;

[0101] If there is a trigger event, determine whether the trigger event is an active trigger event;

[0102] If it is an active trigger event, the remaining charging time after the active trigger event is updated is adjusted to display;

[0103] If it is a non-active triggering event, a jump suppression process is performed on the change of the remaining charging time.

[0104] In an optional implementation, the control module further includes:

[0105] Active triggering events include switching operations on target power accessories and adjusting target charging SOC.

[0106] In an optional implementation, the first determining module further includes:

[0107] Determine the basic remaining time based on the current battery SOC and target charging SOC;

[0108] According to the battery temperature and the ambient temperature, the temperature compensation time is determined based on a pre-trained temperature rise model; the basic remaining time and the temperature compensation time constitute the first remaining time.

[0109] In an optional implementation, the first determining module further includes:

[0110] If the target charging SOC is less than the first target threshold, the temperature compensation time is converged according to the temperature rise coefficient to obtain the converged temperature compensation time; the basic remaining time and the converged temperature compensation time constitute the first remaining time.

[0111] In an optional implementation, the second determining module further includes:

[0112] If the target charging SOC is equal to 100%, the current battery SOC is compared with the second target threshold value, and the second remaining time is calculated according to the comparison result;

[0113] If the target charging SOC is less than 100%, the second remaining time is set to 0.

[0114] In an optional implementation, the second determining module further includes:

[0115] If the current battery SOC is less than the second target threshold, the second remaining time is determined based on the average value of the historical full charge correction time;

[0116] If the current battery SOC is greater than or equal to the second target threshold, the second remaining time is determined according to the current battery cell voltage and charging current based on a preset time relationship table, where the preset time relationship table is a relationship table between the battery cell voltage, charging current and the second remaining time.

[0117] In summary, the embodiment of this specification provides a charging remaining time display device, which obtains the battery temperature, ambient temperature, current battery SOC and the target charging SOC input by the user through a charging remaining time display method and device; determines the first remaining time according to the battery temperature, ambient temperature, current battery SOC and target charging SOC; determines the second remaining time for terminal correction according to the current battery SOC and the target charging SOC; and controls the display of the charging remaining time according to the first remaining time and the second remaining time. In this way, by monitoring the ambient temperature, battery temperature and thermal management, and comprehensively considering various charging influencing factors, the accuracy of the battery charging remaining time is effectively improved, and the display of the charging remaining time can be quickly adjusted based on changes in working conditions.

[0118] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the charging remaining time display device described above can refer to the corresponding process in the aforementioned method, and will not be described in detail here.

[0119] According to the third aspect of the present invention, a controller is provided, which includes a charging remaining time display device, a memory, a processor and a communication unit. The memory stores machine-readable instructions executable by the processor. When the controller is running, the processor and the memory communicate through a bus, the processor executes the machine-readable instructions, and executes the charging remaining time display method.

[0120] The memory, processor, and communication unit components are electrically connected to each other directly or indirectly to achieve signal transmission or interaction. For example, these components can be electrically connected to each other via one or more communication buses or signal lines. The charging remaining time display device includes at least one software function module that can be stored in the memory in the form of software or firmware. The processor is used to execute the executable module stored in the memory (for example, the software function module or computer program included in the charging remaining time display device).

[0121] Among them, the memory can be, but is not limited to, random access memory (Random Access Memory, RAM), read only memory (Read Only Memory, ROM), programmable read-only memory (Programmable Read-Only Memory, PROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable read-only memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc.

[0122] In some embodiments, the processor is used to perform one or more functions described in this embodiment. In some embodiments, the processor may include one or more processing cores (eg, a single-core processor (S) or a multi-core processor (S)).

[0123] In this embodiment, the memory is used to store the program, and the processor is used to execute the program after receiving the execution instruction. The process definition method disclosed in any implementation of this embodiment can be applied to the processor, or implemented by the processor.

[0124] The communication unit is used to establish a communication connection between the controller and other devices through the network, and to send and receive data through the network.

[0125] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the controller described above can refer to the corresponding process in the aforementioned method, and will not be elaborated here.

[0126] According to a fourth aspect of the present invention, a vehicle is provided, comprising a vehicle body and a controller installed in the vehicle body, wherein when the vehicle is charged,

[0127] The vehicle can be a new energy vehicle, a pure electric vehicle, or a new energy hybrid vehicle. This embodiment does not limit this. A power battery is installed in the vehicle body, and the BMS of the power battery is connected to the controller. When charging, the controller is used to implement the aforementioned charging remaining time display method. The specific method steps refer to the aforementioned content, and this embodiment will not be repeated.

[0128] In summary, the embodiment of this specification provides a method and device for displaying the remaining charging time. Through a method and device for displaying the remaining charging time, the battery temperature, ambient temperature, current battery SOC, and target charging SOC input by the user are obtained; the first remaining time is determined according to the battery temperature, ambient temperature, current battery SOC, and target charging SOC; the second remaining time for terminal correction is determined according to the current battery SOC and target charging SOC; and the display of the remaining charging time is controlled according to the first remaining time and the second remaining time. In this way, by monitoring the ambient temperature, battery temperature, and thermal management, and comprehensively considering a variety of charging influencing factors, the accuracy of the remaining battery charging time is effectively improved, and the display of the remaining charging time can be quickly adjusted based on changes in working conditions.

[0129] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the controller of the vehicle described above can refer to the corresponding process in the aforementioned method, and will not be elaborated here.

[0130] The above are only various embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for displaying remaining charging time, characterized in that: include: Obtain battery temperature, ambient temperature, current battery SOC, and target charging SOC entered by the user; determining a first remaining time according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC; determining a second remaining time for terminal correction according to the current battery SOC and the charging target SOC; Controlling display of the remaining charging time according to the first remaining time and the second remaining time; The determining the first remaining time according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC includes: Determining a basic remaining time according to the current battery SOC and the target charging SOC; Determine the temperature compensation time according to the battery temperature and the ambient temperature based on a pre-trained temperature rise model; the basic remaining time and the temperature compensation time constitute the first remaining time; The determining, according to the current battery SOC and the charging target SOC, a second remaining time for terminal correction includes: If the charging target SOC is equal to 100%, the current battery SOC is compared with a second target threshold value, and a second remaining time is calculated according to the comparison result; If the charging target SOC is less than 100%, the second remaining time is set to 0; The comparing the current battery SOC with the second target threshold, and calculating the second remaining time according to the comparison result, includes: If the current battery SOC is less than the second target threshold, determining a second remaining time according to an average value of historical full charge correction times; If the current battery SOC is greater than or equal to the second target threshold, the second remaining time is determined according to the current battery cell voltage and charging current based on a preset time relationship table, where the preset time relationship table is a relationship table between the battery cell voltage, charging current and the second remaining time.

2. The method according to claim 1, characterized in that The method further comprises: During the charging process, detecting whether there is a triggering event that disturbs the remaining charging time; If there is a trigger event, determining whether the trigger event is an active trigger event; If it is an active triggering event, adjusting and displaying the remaining charging time after the active triggering event is updated; If it is a non-active triggering event, a jump suppression process is performed on the change of the remaining charging time.

3. The method according to claim 2, characterized in that The active triggering event includes a switch operation of a target electrical accessory and an adjustment of a target charging SOC.

4. The method according to claim 1, characterized in that The method further comprises: If the charging target SOC is less than a first target threshold, the temperature compensation time is converged according to the temperature rise coefficient to obtain the converged temperature compensation time; the basic remaining time and the converged temperature compensation time constitute the first remaining time.

5. A charging remaining time display device, characterized in that: The method for displaying the remaining charging time according to any one of claims 1 to 4 is used; the device comprises: The acquisition module is used to obtain the battery temperature, ambient temperature, current battery SOC and the target charging SOC input by the user; A first determining module, configured to determine a first remaining time according to the battery temperature, the ambient temperature, the current battery SOC, and the target charging SOC; A second determination module, configured to determine a second remaining time for terminal correction according to the current battery SOC and the charging target SOC; A control module is used to control the display of the remaining charging time according to the first remaining time and the second remaining time.

6. A controller, characterized in that: The controller includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for displaying the remaining charging time described in any one of claims 1 to 4 is implemented.

7. A vehicle, characterized in that: The vehicle includes a vehicle body and a controller installed in the vehicle body, wherein when the vehicle is charging, the controller executes the remaining charging time display method described in any one of claims 1-4.

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