Battery charging methods, battery charging devices and vehicles

Abstract

This invention discloses a battery charging method, a battery charging device, and a vehicle, belonging to the field of vehicle technology. The method includes acquiring the current battery level; displaying a low battery warning when the current battery level is lower than a first charge level; automatically or manually determining a target charging mode, wherein the target charging mode is fast charging or slow charging; activating the air conditioner's forced battery cooling mode based on the target charging mode being fast charging, wherein the forced battery cooling mode is used to cool the battery; and displaying a charging route reminder based on the vehicle's location, wherein the charging route reminder is used to instruct the user to drive to the target charging area along the target path. Using the technical solution provided in this application, the battery can be charged quickly and safely.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a battery charging method, a battery charging device, and a vehicle. Background Technology

[0002] Electric vehicles primarily use electricity, which helps conserve energy and protect the environment, leading to a growing number of users choosing them as an environmentally friendly mode of transportation. However, because electric vehicles consume a significant amount of electricity during operation, ensuring their safe operation through timely charging is a pressing issue that needs to be addressed.

[0003] In related technologies, when an electric vehicle's battery is low, a charging alarm will be issued to the user to remind them to charge the vehicle in time. However, if the battery temperature is too high when the battery is low, charging the vehicle at this time may not only result in a slow charging speed and a long charging time, but may also lead to unsafe consequences such as explosion due to overheating during charging. In other words, existing charging methods are difficult to use quickly and safely to charge electric vehicles, thus reducing the user experience. Summary of the Invention

[0004] In view of this, embodiments of this application provide a battery charging method, a battery charging device, and a vehicle that can charge the battery quickly and safely.

[0005] On one hand, embodiments of this application provide a battery charging method, the method comprising:

[0006] Get the current battery level;

[0007] When the current battery level is lower than the first battery level, a low battery warning will be displayed;

[0008] After the low battery reminder is displayed, the target charging method is determined automatically or manually, wherein the target charging method is fast charging or slow charging;

[0009] Based on the target charging method being fast charging, the forced battery cooling mode of the air conditioner is activated, wherein the forced battery cooling mode is used to cool the battery.

[0010] Based on the vehicle's location, a charging route reminder is displayed, which instructs the user to drive to the target charging area along the target route.

[0011] Optionally, the automatic or manual determination of the target charging method includes:

[0012] The target charging method is determined automatically or manually based on the road type where the vehicle is located and the current battery level, wherein the road type includes highways and urban roads.

[0013] Optionally, determining the target charging method automatically or manually based on the road type where the vehicle is located and the current battery level includes:

[0014] When the road type is the expressway and the current battery level is greater than the second battery level, the target charging method is automatically determined to be fast charging, wherein the first battery level is greater than the second battery level.

[0015] Optionally, determining the target charging method automatically or manually based on the road type where the vehicle is located and the current battery level includes:

[0016] When the road type is the city road and the current battery level is greater than the second battery level, a target option is generated, wherein the target option includes a fast charging option and a slow charging option;

[0017] Based on the user's selection of the fast charging option, the target charging method is determined to be fast charging.

[0018] Optionally, when activating the air conditioner's battery-operated forced cooling mode, the method further includes:

[0019] The passenger cabin cooling mode is a mode where the air conditioning is turned off, wherein the passenger cabin cooling mode is used to cool down the passenger cabin.

[0020] Optionally, the battery forced cooling mode is used to cool the battery to a target temperature.

[0021] Optionally, displaying charging route reminders based on the vehicle's current location includes:

[0022] Get the vehicle's remaining driving range;

[0023] Based on the current location and the remaining driving range, the driving area of ​​the vehicle is determined;

[0024] Based on the driving area, at least one candidate charging area located within the driving area is determined;

[0025] Based on the candidate charging areas, the target charging area is determined;

[0026] Based on the current location and the target charging area, display the charging route reminder.

[0027] Optionally, the target path is the shortest path generated based on the current location and the target charging area.

[0028] On one hand, embodiments of this application provide a battery charging device, the device comprising:

[0029] The acquisition module is used to obtain the current battery level.

[0030] The display module is used to display a low battery reminder when the current battery level is lower than a first battery level.

[0031] The determination module is used to automatically or manually determine the target charging method after the low battery reminder is displayed, wherein the target charging method includes fast charging and slow charging;

[0032] A startup module is used to start the forced battery cooling mode of the air conditioner for fast charging based on the target charging method, wherein the forced battery cooling mode is used to cool down the battery;

[0033] The display module is also used to display charging route reminders based on the vehicle's location, wherein the charging route reminders are used to instruct the user to drive to the target charging area according to the target path.

[0034] Optionally, the determining module is further configured to:

[0035] The target charging method is determined automatically or manually based on the road type where the vehicle is located and the current battery level, wherein the road type includes highways and urban roads.

[0036] Optionally, the determining module is further configured to:

[0037] When the road type is the expressway and the current battery level is greater than the second battery level, the target charging method is automatically determined to be fast charging, wherein the first battery level is greater than the second battery level.

[0038] Optionally, the determining module is further configured to:

[0039] When the road type is the city road and the current battery level is greater than the second battery level, a target option is generated, wherein the target option includes a fast charging option and a slow charging option;

[0040] Based on the user's selection of the fast charging option, the target charging method is determined to be fast charging.

[0041] Optionally, the device further includes a shut-off module for shutting off the passenger compartment cooling mode of the air conditioner when the battery-forced cooling mode of the air conditioner is activated, wherein the passenger compartment cooling mode is used to cool the passenger compartment.

[0042] Optionally, the device further includes a reminder module for obtaining the vehicle's remaining driving range; determining the vehicle's driving area based on the current location and the remaining driving range; determining at least one candidate charging area within the driving area based on the driving area; determining the target charging area based on the candidate charging areas; and displaying the charging route reminder based on the current location and the target charging area.

[0043] On the one hand, embodiments of this application provide a vehicle for implementing the battery charging method described in any of the above claims.

[0044] The battery charging method provided in this application firstly displays a low battery warning when the battery's current charge level is below a certain threshold, thus promptly reminding the user to charge the vehicle and preventing it from running out of power. Secondly, based on the current charge level, the target charging method is determined. If the target charging method is fast charging, the forced cooling mode of the air conditioner is activated to cool the battery. This pre-cooling of the battery before charging avoids dangerous consequences such as slow charging speed or battery explosion due to excessive heat. In other words, this method not only charges the battery quickly and improves charging efficiency but also ensures the safety of the charging process. Furthermore, the method includes displaying a charging route reminder based on the vehicle's location, instructing the user to travel along the target path to the target charging area. This ensures that the user arrives at the charging area quickly and accurately, further improving the charging efficiency and enhancing the user experience. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a flowchart of a battery charging method provided in an embodiment of this application;

[0047] Figure 2 This is a flowchart of a battery protection method provided in an embodiment of this application;

[0048] Figure 3 This is a flowchart illustrating the process of displaying charging route reminders based on the vehicle's location in a battery protection method provided in this application embodiment;

[0049] Figure 4 This is a block diagram of a battery protection device provided in an embodiment of this application.

[0050] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by those skilled in the art.

[0053] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0054] refer to Figure 1 , Figure 1 This is a flowchart of a battery charging method provided in an embodiment of this application, which includes the following steps 101 to 104.

[0055] In step 101, the current battery level is obtained.

[0056] It should be noted that the current battery charge refers to the battery's current remaining charge. The battery can be the power battery in an electric vehicle.

[0057] In step 102, when the current battery level is lower than the first battery level, a low battery reminder is displayed.

[0058] The initial battery level can be set by technicians at the factory, set by the user, or calculated using pre-defined formulas or models based on real-time parameters. Understandably, displaying a low battery warning encourages users to charge their vehicles more promptly. It should be noted that the low battery warning will continue to be displayed until the target charging method is determined. Once the target charging method is selected, the low battery warning will not be displayed.

[0059] In step 103, after displaying a low battery reminder, the target charging method is determined automatically or manually.

[0060] The target charging method is either fast charging or slow charging, so determining the target charging method means deciding whether to perform fast charging or slow charging. Fast charging refers to high-power DC charging, which has high charging efficiency and can generally be achieved using charging stations or other equipment with fast charging capabilities. Slow charging refers to low-power AC charging, which has lower charging efficiency and can generally be achieved using household power or charging stations with slow charging capabilities.

[0061] In step 104, based on the target charging method being fast charging, the forced cooling mode of the air conditioner's battery is activated.

[0062] The forced battery cooling mode is used to cool the battery. Generally, air conditioners have multiple modes, such as forced battery cooling mode and passenger compartment cooling mode. It is understandable that by cooling the battery before charging, not only is low charging efficiency due to excessively high battery temperature avoided, but also potential safety hazards such as battery explosion during charging due to excessively high battery temperature are prevented. In other words, the battery charging method provided in this application can charge the battery quickly and safely.

[0063] In step 105, a charging route reminder is displayed based on the vehicle's location.

[0064] The charging route reminder guides users to the target charging area via a predetermined path. The target path is the optimal route from the vehicle's current location to the target charging area. For example, this target path is the route that takes the shortest time for the vehicle to travel from its current location to the target charging area. This ensures that users reach the target charging area as quickly as possible, avoiding situations where the vehicle cannot operate normally due to insufficient battery power.

[0065] The battery charging method provided in this application firstly displays a low battery warning when the battery's current charge level is below a certain threshold, thus promptly reminding the user to charge the vehicle and preventing it from running out of power. Secondly, based on the current charge level, the target charging method is determined. If the target charging method is fast charging, the forced cooling mode of the air conditioner is activated to cool the battery. This pre-cooling of the battery before charging avoids dangerous consequences such as slow charging speed or battery explosion due to excessive heat. In other words, this method not only charges the battery quickly and improves charging efficiency but also ensures the safety of the charging process. Furthermore, the method includes displaying a charging route reminder based on the vehicle's location, instructing the user to travel along the target path to the target charging area. This ensures that the user arrives at the charging area quickly and accurately, further improving the charging efficiency and enhancing the user experience.

[0066] refer to Figure 2 , Figure 2 This is a flowchart of a battery protection method provided in an embodiment of this application, which includes the following steps 201 to 208.

[0067] In step 201, the current battery level is obtained.

[0068] It should be noted that the principle of step 201 is the same as that of step 101. The current battery level can be obtained either in real time or periodically.

[0069] In step 202, when the current battery level is lower than the first battery level, a low battery reminder is displayed.

[0070] In some embodiments, low battery alerts can be displayed in various ways, such as through text, icons, voice, or any combination thereof. For example, displaying the text "Current battery level is low, charge promptly" on the vehicle's central control screen allows users to easily and promptly understand the battery's power status. Alternatively, the vehicle can notify the user of the current battery level via voice announcement at predetermined intervals, further enhancing user awareness of battery status. Of course, other methods can also be used to inform the user of the current battery level, which will not be listed here.

[0071] In step 203, after displaying the low battery warning, the target charging method is automatically or manually determined based on the road type where the vehicle is located and the current battery level.

[0072] The road type includes highways and urban roads. In some embodiments, the road type can be obtained based on the vehicle's GPS (Global Positioning System). In some embodiments, the road type can be obtained based on the vehicle's image acquisition system, wherein the image acquisition system identifies the vehicle's surrounding environment to determine the road type the vehicle is currently on.

[0073] It should be noted that the low battery warning will continue to be displayed until the target charging method is determined. Once the target charging method is determined, the low battery warning will no longer be displayed. Also, when the low battery warning first appears, the user will not charge the vehicle but will continue driving, during which time the battery level will continue to decrease. Therefore, after the low battery warning is displayed and before the vehicle is charged, the vehicle's current battery level will be less than or equal to the initial charge level.

[0074] In some embodiments, determining the target charging method automatically or manually based on the road type where the vehicle is located and the current battery level includes: automatically determining the target charging method as fast charging when the road type is a highway and the current battery level is greater than a second battery level.

[0075] In this context, the first battery level is greater than the second. Automatic determination can be periodic; for example, based on the road type being a highway and the current battery level being greater than the second, the target charging method is determined to be fast charging at preset intervals. It's important to note that fast charging when the battery level is too low (below the second) can easily damage battery performance and shorten its lifespan. Similarly, on highways, if the battery level is too low (below the second), it indicates the vehicle is operating at high speeds for an extended period. In this case, the battery temperature is too high, and fast charging can also damage battery performance and shorten its lifespan. Therefore, when driving on highways, fast charging when the battery level is greater than the second indicates better battery protection, preventing performance damage and extending battery life.

[0076] Generally, to meet drivers' needs and allow them to charge quickly, charging stations in highway charging areas are typically fast-charging stations. In some embodiments, when the road type is highway, the default target charging method is fast charging. Of course, if the current battery level is less than a second charge level, the default target charging method will automatically switch to slow charging. In some embodiments, a battery level alarm is generated based on the road type being highway and the target charging method being slow charging. This battery level alarm can be a navigation route instructing the user to drive from their current location to the nearest charging area for slow charging. The battery level alarm can also be a deceleration reminder and a towing assistance call, prompting the user to slow down to a safe area and call for towing assistance to avoid unsafe consequences such as the vehicle suddenly running out of power while driving on the highway.

[0077] In some embodiments, automatically or manually determining the target charging method based on the road type and current battery level includes the following two steps:

[0078] The first step is to generate target options based on the road type being urban roads and the current battery level being greater than the second battery level. These target options include fast charging and slow charging options.

[0079] It's worth noting that if the vehicle is driven on city roads, the user may have lower requirements for charging time and can choose either a longer fast charging method or a shorter slow charging method. Therefore, when driving on city roads, users can choose the charging method according to their own needs, improving the user experience.

[0080] The second step involves determining the target charging method as fast charging based on the user's selection of the fast charging option. In some embodiments, the target option is displayed on the vehicle's central control screen, such as displaying both fast charging and slow charging options. The target charging method is determined to be fast charging based on the user's tap or long-press action on the fast charging option. Alternatively, the user can also select the fast charging option via voice control.

[0081] Similarly, when the battery level is below the second threshold, choosing fast charging will negatively impact battery performance and shorten its lifespan. Therefore, given that the road type is urban and the current battery level is below the second threshold, the target charging method can be determined as slow charging, either by user selection or automatic selection. Furthermore, based on the target charging method being slow charging, a battery level alarm is generated. It's understood that this battery level alarm is the same as the one described above, and will not be elaborated upon further.

[0082] In step 204, based on the target charging method being fast charging, the forced battery cooling mode of the air conditioner is activated.

[0083] The forced battery cooling mode is used to cool the battery. It's worth noting that when the target charging method is determined to be fast charging, the forced battery cooling mode of the air conditioner is automatically activated. This saves the user the trouble of manually adjusting the air conditioner mode, improving the control efficiency of the air conditioner. Because the battery can be cooled before charging, it avoids low charging efficiency due to excessively high battery temperature, prevents battery explosions, and extends battery life.

[0084] In some embodiments, the forced cooling mode is used to cool the battery to a target temperature. The target temperature is within a preset temperature range. The minimum value of the preset temperature range is a first temperature, and the maximum value is a second temperature. It is understood that the target temperature of the forced cooling mode can be adjusted according to actual needs. In some embodiments, the preset temperature range is 20°C to 25°C. It should be noted that when the battery temperature is within the range of 20°C to 25°C, the battery charging efficiency is highest and the possibility of lithium plating is low. Therefore, it not only enables fast charging and improves battery charging efficiency but also avoids damage to the battery and extends its lifespan.

[0085] In some embodiments, the method further includes: turning off the forced cooling mode of the battery when the battery temperature drops to a target temperature. This saves battery power.

[0086] In some embodiments, the method further includes: acquiring the current temperature of the battery, and determining a target duration for cooling the battery based on the current temperature and a target temperature. In some embodiments, the target duration is the time elapsed from the start to the shutdown of the forced cooling mode of the air conditioner. The shutdown time of the forced cooling mode of the air conditioner coincides with the time when the vehicle arrives at the target charging area, thereby ensuring that the battery is cooled before charging and effectively saving power.

[0087] In some embodiments, based on vehicle speed and the target route, the estimated time for the vehicle to travel from its current location to the target charging area is determined, thereby determining the time when the vehicle arrives at the target charging area. Based on the time when the vehicle arrives at the target charging area and the target time required for battery cooling, the activation and deactivation times of the air conditioning's forced battery cooling mode are determined, ensuring that the deactivation time of the forced battery cooling mode is consistent with the time of arrival at the target charging area. This allows for timely battery cooling while avoiding wasted power due to prolonged forced battery cooling mode operation, thus conserving battery power.

[0088] In step 205, the passenger compartment cooling mode of the air conditioning is turned off.

[0089] The passenger compartment cooling mode is used to cool the passenger compartment. Since the passenger compartment cooling mode of the air conditioner is turned off when the battery forced cooling mode of the air conditioner is activated, it can be ensured that all the heat generated by the compressor is used to cool the battery, which speeds up the cooling process and improves the cooling efficiency of the battery.

[0090] In step 206, a charging route reminder is displayed based on the vehicle's location.

[0091] The charging route reminder is used to guide users to the target charging area by following the target route.

[0092] In some embodiments, step 209 can be implemented by the following steps 2091 to 2095:

[0093] In step 2061, the remaining driving range of the vehicle is obtained.

[0094] In some embodiments, the remaining driving range is the furthest distance the vehicle can travel before charging, determined based on the vehicle's current battery level, battery status, and target charging method. It should be noted that when the target charging method is fast charging, the air conditioning will activate in forced cooling mode. Since the air conditioning also consumes some electricity during operation, the remaining driving range determined by considering all three factors mentioned above is more accurate.

[0095] In some embodiments, the remaining driving range is the furthest distance the vehicle can travel before charging, determined based on the vehicle's current battery level, battery state, target charging method, and power consumption of electrical devices on the vehicle other than the air conditioning. This allows for a more accurate determination of the vehicle's remaining driving range.

[0096] In step 2062, the vehicle's driving area is determined based on the current location and remaining driving range.

[0097] It should be noted that the vehicle's driving area can be a regular area, such as a circular area, a square area, a triangular area, etc., or it can be an irregular area. In some embodiments, the vehicle's driving area is a circular area defined by the vehicle's current position as the center and the vehicle's remaining driving range as the radius.

[0098] In step 2063, at least one candidate charging area located within the driving area is determined based on the driving area.

[0099] It should be noted that the candidate charging area refers to an area that can provide charging services for vehicles, such as a service area on a highway with available charging stations. In some embodiments, the candidate charging area is a circular area defined by an available charging station as the center and the vehicle's remaining driving range as the radius. The candidate area overlaps with the driving area. This avoids the situation where the vehicle's battery is depleted before reaching an available charging station, preventing timely charging. It should also be noted that when there are multiple available charging stations within the same candidate charging area, any available charging station can be selected as the center of the candidate charging area, because the distance between these multiple available charging stations is relatively short and their impact on the candidate charging area is negligible.

[0100] In step 2064, the target charging region is determined based on the candidate charging regions.

[0101] In some embodiments, the location of each candidate charging area is obtained, and the candidate charging area closest to the vehicle's current location is determined as the target charging area. This ensures that the user can reach a charging location in the shortest possible time.

[0102] In some embodiments, the location of each candidate charging area and the number of available charging piles in each candidate area are obtained, and the candidate charging area that is closest to the vehicle's current location and has the most available charging piles is determined as the target charging area. This avoids the risk that when the vehicle arrives at the target charging area, it may not be able to find a usable charging pile because it has already been occupied by someone else, thus preventing it from charging in a timely manner.

[0103] In some embodiments, if the number of available charging stations in all candidate areas is less than a first threshold, a battery alarm message is displayed, and the forced battery cooling mode of the air conditioner is turned off. This battery alarm message is the same as the battery alarm message in step 204, and will not be repeated here. It is understood that in the absence of candidate charging areas, the vehicle cannot be fast-charged. By slowing down and / or turning off the forced battery cooling mode of the air conditioner, battery power can be saved. Calling for roadside assistance and towing in a timely manner can prevent the vehicle from running out of power midway, thus avoiding the consequences of the vehicle becoming unable to operate normally. In some embodiments, if the number of available charging stations in all candidate areas is less than a first threshold, the path to the nearest candidate charging area to the vehicle's current location is displayed, and the forced battery cooling mode of the air conditioner is turned off. It is understood that through this method, users can choose the nearest area that can provide charging services for the vehicle, and then choose slow charging or wait for others to finish charging before fast charging, avoiding the risk of the vehicle running out of power and becoming unable to operate normally while continuing to drive.

[0104] In some embodiments, based on the vehicle's current location and the location of the candidate charging area, the estimated time for the vehicle to travel from its current location to the candidate charging area is determined. Based on the estimated time and the charging pile usage in the candidate charging area, the number of available charging piles in the candidate charging area is determined. The number of available charging piles is determined by comprehensively considering the following factors: the number of charging piles not occupied by other vehicles before the estimated time, the number of charging piles occupied by other vehicles before the estimated time but whose charging has ended by the estimated time, the number of charging piles occupied by other vehicles before the estimated time but whose charging has not ended by the estimated time, and the number of charging piles not occupied by other vehicles before the estimated time but occupied by other vehicles by the estimated time. This allows for a more accurate determination of the number of available charging piles. It should be noted that the vehicle can obtain the charging pile usage information in real time.

[0105] In some embodiments, the location of each candidate charging area, the number of available charging piles in each candidate area, and the user's selection operation are obtained to determine the target charging area. For example, the location of each candidate charging area and the number of available charging piles in each candidate charging area are displayed on a map on the vehicle's central control screen. Each candidate charging area on the map has a corresponding selection control. Based on the user's click on the selection control, the candidate charging area corresponding to the clicked selection control is determined as the target charging area. In some embodiments, if the number of available charging piles in the candidate charging area corresponding to the user's clicked selection control is less than a threshold, a prompt to reselect is displayed. This avoids the risk that due to a limited number of available charging piles, the user may arrive at the target charging area only to find that available charging piles are already occupied, resulting in an inability to charge in a timely manner. It should be noted that the process of the user reselecting is the same as the first selection process, and will not be described again here.

[0106] In step 2065, a charging route reminder is displayed based on the current location and the target charging area.

[0107] It should be noted that this charging route reminder can be displayed to the user via navigation. The target path is the shortest route generated based on the current location and the target charging area. Furthermore, this target path is the route taken by the running vehicle.

[0108] In some embodiments, the method further includes: if, in step 2083, it is determined based on the driving area that there is no candidate charging area within the driving area, then the forced battery cooling mode of the air conditioner is turned off and a battery level alarm message is displayed. The charging alarm message is the same as the battery level alarm message in step 204, and will not be described again here. It is understood that in the case where no candidate charging area exists, it means that the vehicle cannot achieve fast charging; turning off the forced battery cooling mode of the air conditioner can save power.

[0109] It should be noted that the battery charging method provided in this application embodiment can be executed by the vehicle's controller. Battery-related information such as battery charge and battery status can be obtained by the vehicle's battery management system and then sent to the controller. Information such as the vehicle's location, the location of charging stations, the number of charging stations, and the target route can be obtained by the vehicle's navigation system and then sent to the controller. Adjustment of the air conditioning mode can be achieved through interaction between the controller and the air conditioning system. All types of display information in this method can be achieved through interaction between the controller and the vehicle's central control screen. The methods for obtaining or interacting with the above information can also be adjusted as needed.

[0110] In summary, the battery charging method provided in this application embodiment can charge the vehicle battery quickly and safely, improving the efficiency of battery charging and enhancing the user experience.

[0111] Figure 3 This is a block diagram of a battery charging device provided in an embodiment of this application. The device includes:

[0112] The acquisition module 301 is used to acquire the current battery level.

[0113] Display module 302 is used to display a low battery reminder when the current battery level is lower than the first battery level.

[0114] The determination module 303 is used to automatically or manually determine the target charging method after displaying a low battery reminder, wherein the target charging method includes fast charging and slow charging;

[0115] The start module 304 is used to start the forced battery cooling mode of the air conditioner based on the target charging method being fast charging, wherein the forced battery cooling mode is used to cool the battery.

[0116] The display module 301 is also used to display a charging route reminder based on the vehicle's location, wherein the charging route reminder is used to instruct the user to drive to the target charging area according to the target route.

[0117] In some embodiments, the determining module 302 is further configured to:

[0118] Based on the road type where the vehicle is located and the current battery level, the target charging method can be determined automatically or manually. The road type includes highways and urban roads.

[0119] In some embodiments, the determining module 302 is further configured to:

[0120] When the road type is highway and the current battery level is greater than the second battery level, the target charging method is automatically determined to be fast charging, where the first battery level is greater than the second battery level.

[0121] In some embodiments, the determining module 302 is further configured to:

[0122] When the road type is urban road and the current battery level is greater than the second battery level, a target option is generated, which includes a fast charging option and a slow charging option.

[0123] Based on the user's selection of the fast charging option, the target charging method is determined to be fast charging.

[0124] In some embodiments, the device further includes a shut-off module for shutting off the passenger compartment cooling mode of the air conditioner when the battery-powered forced cooling mode of the air conditioner is activated, wherein the passenger compartment cooling mode is used to cool the passenger compartment.

[0125] In some embodiments, the device further includes a reminder module for obtaining the vehicle's remaining driving range; determining the vehicle's driving area based on the current location and remaining driving range; determining at least one candidate charging area located within the driving area based on the driving area; determining a target charging area based on the candidate charging areas; and displaying a charging route reminder based on the current location and the target charging area.

[0126] It should be noted that each module in the above-mentioned battery charging device is used to implement the corresponding functions in the above-mentioned battery charging method, which will not be elaborated here.

[0127] This application also provides a vehicle for implementing the battery charging method described in any of the above embodiments. It should be noted that this vehicle is an electric vehicle. By implementing the above battery charging method, this vehicle can ensure fast and safe charging of the vehicle's battery, greatly improving the user experience.

[0128] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0129] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0130] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A method of charging a battery, characterized by, The method comprises: acquiring a current power of a battery; displaying a low power reminder when the current power is lower than a first power; after displaying the low power reminder, automatically or manually determining a target charging mode based on a road type where the vehicle is located and the current power, wherein the road type comprises an expressway and an urban road, and the target charging mode is fast charging or slow charging; based on the target charging mode being the fast charging, starting a battery forced cooling mode of an air conditioner and closing a passenger cabin cooling mode of the air conditioner, wherein the battery forced cooling mode is used for cooling the battery; based on the target charging mode being slow charging, generating power alarm information, wherein the power alarm information is a navigation route, a speed reduction reminder, and a tow truck rescue phone; acquiring a remaining cruising range of the vehicle, determining a driving area of the vehicle based on a current position and the remaining cruising range, determining at least one candidate charging area located in the driving area based on the driving area, determining a target charging area based on a position of the candidate charging area and a number of available charging piles in each of the candidate charging areas, and displaying a charging route reminder based on the current position and the target charging area, wherein the charging route reminder is used to instruct a user to drive to the target charging area according to a target path; the method further comprises: determining an estimated duration of the vehicle driving from the current position to the target charging area based on a vehicle speed and the target path, to determine a time when the vehicle arrives at the target charging area; and determining an opening time and a closing time of the battery forced cooling mode of the air conditioner based on the time when the vehicle arrives at the target charging area and a target duration required for cooling the battery, so that the closing time of the battery forced cooling mode is consistent with the time when the vehicle arrives at the target charging area; the automatic or manual determination of the target charging mode based on the road type where the vehicle is located and the current power comprises: based on the road type being the expressway and the current power being greater than a second power, automatically determining that the target charging mode is the fast charging, wherein the first power is greater than the second power; based on the road type being the urban road and the current power being greater than the second power, generating a target option, wherein the target option comprises a fast charging option and a slow charging option; based on the user selecting the fast charging option, determining that the target charging mode is the fast charging; based on the road type being the urban road and the current power being less than the second power, automatically or manually determining that the target charging mode is the slow charging; the road type is obtained based on an image acquisition system of the vehicle, wherein the image acquisition system identifies the surrounding environment of the vehicle to determine the road type where the vehicle is located.

2. The battery charging method according to claim 1, wherein when starting the battery forced cooling mode of the air conditioner, the method further comprises: closing the passenger cabin cooling mode of the air conditioner, wherein the passenger cabin cooling mode is used for cooling the passenger cabin.

3. The battery charging method of claim 1, wherein, The battery forced cooling mode is used to cool the battery to a target temperature.

4. The battery charging method of claim 1, wherein, The target path is a shortest path generated based on the current position and the target charging region.

5. A battery charging device, characterized by, The device comprises: an acquisition module configured to acquire a current power of a battery; a display module configured to display a low power reminder when the current power is lower than a first power; a determination module configured to automatically or manually determine a target charging mode based on a road type where the vehicle is located and the current power after the low power reminder is displayed, the road type comprising a highway and an urban road, and the target charging mode comprising fast charging and slow charging; a starting module configured to start a battery forced cooling mode of an air conditioner and turn off a passenger cabin cooling mode of the air conditioner based on the target charging mode being the fast charging, wherein the battery forced cooling mode is used to cool the battery; and generate a power alarm information based on the target charging mode being the slow charging, wherein the power alarm information comprises a navigation route, a speed reduction reminder, and a tow truck rescue phone number; the display module is further configured to acquire a remaining range of the vehicle, determine a driving region of the vehicle based on a current position and the remaining range, determine at least one candidate charging region located in the driving region based on the driving region, determine a target charging region based on a position of the candidate charging region and a number of available charging piles in each of the candidate charging regions, and display a charging route reminder based on the current position and the target charging region, wherein the charging route reminder is used to instruct a user to travel to the target charging region along a target path; the starting module is further configured to determine an estimated time length for the vehicle to travel from the current position to the target charging region based on a vehicle speed and the target path, to determine a time when the vehicle arrives at the target charging region, and determine an opening time and a closing time of the battery forced cooling mode of the air conditioner based on the time when the vehicle arrives at the target charging region and a target time length required for cooling the battery, so that the closing time of the battery forced cooling mode is consistent with the time when the vehicle arrives at the target charging region; the automatic or manual determination of the target charging mode based on the road type where the vehicle is located and the current power comprises: automatically determining that the target charging mode is the fast charging based on the road type being the highway and the current power being greater than a second power, wherein the first power is greater than the second power; generating a target option based on the road type being the urban road and the current power being greater than the second power, wherein the target option comprises a fast charging option and a slow charging option; determining that the target charging mode is the fast charging based on a user selecting the fast charging option; automatically or manually determining that the target charging mode is the slow charging based on the road type being the urban road and the current power being less than the second power. The road type is obtained based on an image acquisition system of the vehicle, wherein the image acquisition system identifies the surrounding environment of the vehicle to determine the road type in which the vehicle is located.

6. A vehicle characterized by comprising: The vehicle is configured to implement the battery charging method according to any one of claims 1 to 4.

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