Vehicle storage battery charging method and device and storage medium

Abstract

The invention discloses a vehicle storage battery charging method and device and a storage medium, and belongs to the technical field of vehicle control. The method comprises the steps of obtaining initial voltage of a storage battery of a vehicle; in response to the situation that the initial voltage is smaller than a first voltage threshold value, the temperature of the storage battery and the SOC of the power battery are obtained, and the SOC of the power battery is used for indicating the percentage of the remaining electric quantity of the power battery in the total electric quantity; heating the storage battery in response to the temperature of the storage battery being less than a first temperature threshold; when the temperature of the storage battery is larger than or equal to a first temperature threshold value and the SOC of the power battery is larger than a first percentage, the current voltage of the storage battery is obtained; and in response to the fact that the current voltage of the storage battery is smaller than a second voltage threshold, the power battery is controlled to charge the storage battery, and the first voltage threshold is larger than the second voltage threshold. Therefore, the intelligence of the charging operation of the storage battery is improved, the power shortage of the storage battery is avoided, the health of the storage battery is ensured, and the normal starting and driving of the vehicle are ensured.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of vehicle control technology, and in particular to a method, device and storage medium for charging a battery of a vehicle. Background Art

[0002] The battery is very important for the start of new energy vehicles. If the battery is low, it will affect the normal start of the vehicle, thus giving users a bad driving experience. In related technologies, the battery power is checked regularly after the vehicle is powered off, and if the power is too low, the battery is recharged.

[0003] In the related art, the battery power is detected and recharged at a fixed time, which cannot ensure the battery power is healthy during driving, and it is easy to cause excessive battery power checks. How to intelligently recharge the battery of the vehicle to ensure the battery health, thereby ensuring the normal start and driving of the vehicle, is a problem that needs to be solved. Summary of the invention

[0004] The embodiment of the present application provides a method, device and storage medium for charging a battery of a vehicle, which can be used to ensure the battery health of the battery, thereby ensuring the normal starting and driving of the vehicle. The technical solution is as follows:

[0005] On the one hand, an embodiment of the present application provides a method for charging a battery of a vehicle, the method comprising:

[0006] Obtaining the initial voltage of the vehicle's battery;

[0007] In response to the initial voltage being less than a first voltage threshold, acquiring the temperature of the storage battery and the SOC of the power battery, where the SOC of the power battery is used to indicate the percentage of the remaining power of the power battery to the total power;

[0008] In response to a temperature of the battery being less than a first temperature threshold, heating the battery;

[0009] In response to the temperature of the storage battery being greater than or equal to the first temperature threshold, and the SOC of the power battery being greater than a first percentage, obtaining a current voltage of the storage battery;

[0010] In response to the current voltage of the storage battery being less than a second voltage threshold, the power battery is controlled to supplement power for the storage battery, and the first voltage threshold is greater than the second voltage threshold.

[0011] In another aspect, a battery charging device for a vehicle is provided, the device comprising:

[0012] A first acquisition module, used to acquire an initial voltage of a battery of a vehicle;

[0013] a second acquisition module, configured to acquire the temperature of the storage battery and the SOC of the power battery in response to the initial voltage being less than a first voltage threshold, wherein the SOC of the power battery is used to indicate a percentage of the remaining power of the power battery to the total power;

[0014] a heating module, configured to heat the battery in response to the temperature of the battery being lower than a first temperature threshold;

[0015] a third acquisition module, configured to acquire a current voltage of the battery in response to the temperature of the battery being greater than or equal to the first temperature threshold and the SOC of the power battery being greater than a first percentage;

[0016] The control module is used to control the power battery to supplement the battery in response to the current voltage of the battery being less than a second voltage threshold, and the first voltage threshold is greater than the second voltage threshold.

[0017] On the other hand, a non-temporary computer-readable storage medium is also provided, characterized in that a computer program is stored in the computer-readable storage medium, and the computer program is loaded and executed by a processor to implement any of the above-mentioned vehicle battery charging methods.

[0018] On the other hand, a computer program product is also provided, the computer program product comprising computer instructions, which, when executed by a processor, implement the steps of any of the above-mentioned methods for charging a battery of a vehicle.

[0019] The technical solution provided by this application brings at least the following beneficial effects:

[0020] The present application obtains the initial voltage of the vehicle battery to determine whether it is necessary to wake up the controller to prepare for battery recharging, thereby avoiding the inability to wake up the controller when the battery power is too low; when the initial voltage of the battery is less than a first voltage threshold, the battery temperature and the SOC of the power battery are obtained to determine whether the current vehicle state is suitable for battery recharging; if the battery temperature is less than the first temperature threshold, the battery is heated to create a temperature environment suitable for battery charging; when the battery temperature is greater than or equal to the first temperature threshold and the SOC of the power battery is greater than a first percentage, it indicates that the current vehicle state is suitable for battery recharging, obtains the current voltage of the battery, and determines whether the battery needs to be recharged; when the current voltage of the battery is less than the second voltage threshold, it indicates that the battery needs to be recharged, and controls the power battery to recharge the battery, thereby improving the intelligence of the battery recharging operation, avoiding battery depletion, ensuring the battery health, and thus ensuring the normal starting and driving of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of an implementation environment provided by an embodiment of the present application;

[0023] Figure 2 This is a flow chart of a method for charging a battery of a vehicle provided in an embodiment of the present application;

[0024] Figure 3 It is a battery charging logic diagram of a vehicle provided in an embodiment of the present application;

[0025] Figure 4 It is a structural schematic diagram of a battery charging device for a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0027] The present application provides a method for charging a battery in a vehicle. Figure 1 , which shows a schematic diagram of the implementation environment of the method provided in the embodiment of the present application. The implementation environment may include: BCM (Body Control Module) 11, VCU (Vehicle Control Unit) 12, BMS (Battery Manage System) 13, DCDC (DC to DC converter) 14, ECC (Electronic Climate Control System) 15, TBOX (Telematics BOX) 16 and APP (Application) 17.

[0028] Optionally, BCM11 obtains the initial voltage of the vehicle's battery from BMS13 through VCU12. In response to the initial voltage being less than a first voltage threshold, BCM11 obtains the battery temperature and the SOC of the power battery from BMS13 through VCU12. In response to the battery temperature being less than a first temperature threshold, BCM11 controls ECC15 through VCU12 to heat the battery. In response to the battery heating time exceeding a first preset time, if the battery temperature still does not reach the first temperature threshold, BCM11 reports a first prompt message to TBOX16, and then prompts the driver through APP17 of the vehicle terminal that the battery cannot be recharged because the temperature is too low.

[0029] Exemplarily, in response to the battery temperature being greater than or equal to the first temperature threshold, and the power battery SOC being greater than the first percentage, BCM11 obtains the current voltage of the vehicle battery from BMS13 via VCU12. In response to the power battery SOC being less than or equal to the first percentage, BCM11 reports the second prompt information to TBOX16, and then prompts the driver through APP17 of the vehicle terminal that the power battery SOC is too low to complete the charging.

[0030] In one possible implementation, in response to the current voltage of the battery being less than the second voltage threshold, BCM11 sends a power replenishment request to VCU12; after receiving the power replenishment request, VCU12 sends a high-voltage connection request to BMS13; after receiving the high-voltage connection request, BMS13 controls the power battery to convert high-voltage direct current into low-voltage direct current through DCDC14, and replenishes the battery with the low-voltage direct current.

[0031] Exemplarily, after the first preset duration of charging begins, in response to the current voltage of the battery being less than the target voltage threshold, BCM11 reports the third prompt information to TBOX16, and then prompts the driver through APP17 of the vehicle terminal that the battery charging has failed. Within the first preset duration, if the current voltage of the battery is greater than or equal to the target voltage threshold, BCM11 confirms that the battery charging has been completed. BCM11 reports the fourth prompt information to TBOX16, and then prompts the driver through APP17 of the vehicle terminal that the battery charging has been completed.

[0032] Among them, BCM11, VCU12, BMS13, DCDC14, ECC15, TBOX16 and APP17 establish communication connection through a wired or wireless network.

[0033] Based on the above Figure 1 In the implementation environment shown in FIG. 1 , the present application embodiment provides a method for charging a battery of a vehicle. Figure 2 As shown, taking the method applied to BCM as an example, the method includes steps 201 to 205.

[0034] In step 201 , the BCM obtains the initial voltage of the battery of the vehicle.

[0035] In a possible implementation, after the vehicle is powered off, the BCM wakes itself up at regular intervals, and the BCM obtains the initial voltage of the vehicle's battery, including: the BCM obtains the initial voltage of the vehicle's battery from the BMS through the VCU. Optionally, the BMS detects the voltage of the battery, and after obtaining the initial voltage of the battery, transmits the initial voltage of the battery to the VCU through the bus. After receiving the initial voltage of the battery, the VCU transmits the initial voltage of the battery to the BCM through the bus. Optionally, the bus can be a CAN (Controller Area Network) bus.

[0036] In step 202, in response to the initial voltage being less than the first voltage threshold, the BCM obtains the temperature of the battery and the SOC (State of Charge) of the power battery, where the SOC of the power battery is used to indicate the percentage of the remaining power of the power battery to the total power.

[0037] Exemplarily, after obtaining the initial voltage of the battery, the BCM compares the initial voltage of the battery with a first voltage threshold. In response to the initial voltage being less than the first voltage threshold, the BCM obtains the temperature of the battery and the SOC of the power battery, wherein the SOC of the power battery is used to indicate the percentage of the remaining power of the power battery to the total power.

[0038] Optionally, after acquiring the initial voltage of the battery, if the initial voltage is less than the first voltage threshold, the BCM acquires the temperature of the battery and the SOC of the power battery, including: the BCM acquires the temperature of the battery and the SOC of the power battery from the BMS through the VCU.

[0039] In a possible implementation, optionally, the BMS detects the temperature of the battery and the SOC of the power battery, and after obtaining the temperature of the battery and the SOC of the power battery, transmits the temperature of the battery and the SOC of the power battery to the VCU via the bus. After receiving the temperature of the battery and the SOC of the power battery, the VCU transmits the temperature of the battery and the SOC of the power battery to the BCM via the bus.

[0040] In step 203 , in response to the temperature of the battery being less than a first temperature threshold, the BCM heats the battery.

[0041] Exemplarily, after acquiring the temperature of the battery, the BCM compares the temperature of the battery with a first temperature threshold, and in response to the temperature of the battery being less than the first temperature threshold, the BCM heats the battery, including: the BCM controls the ECC to heat the battery through the VCU. Optionally, the VCU controls the ECC to heat the battery, including: the VCU controls the ECC to connect a power source to a battery heating module, and the heating module of the ECC converts the electrical energy of the power battery into heat energy to heat the battery.

[0042] In a possible implementation, during the heating process, the VCU continuously monitors the temperature of the battery through the BMS, and in response to the battery temperature reaching a first temperature threshold, the VCU controls the ECC to stop heating and disconnect the power supply. Optionally, the first temperature threshold can be set based on experience.

[0043] Exemplarily, in response to the battery heating time exceeding the first preset time, if the battery temperature still does not reach the first temperature threshold, the BCM reports the first prompt information to the TBOX via the CAN bus, and then prompts the driver through the APP of the vehicle terminal that the battery cannot be recharged because the temperature is too low. Optionally, the way to prompt the driver includes but is not limited to: displaying a text message "the battery temperature is too low to complete the recharge" through the APP of the vehicle terminal, or broadcasting a voice message "the battery temperature is too low to complete the recharge" through the audio of the vehicle terminal.

[0044] In step 204 , in response to the temperature of the battery being greater than or equal to a first temperature threshold and the SOC of the power battery being greater than a first percentage, the BCM obtains the current voltage of the battery.

[0045] Optionally, after determining that the temperature of the battery is greater than or equal to the first temperature threshold, the BCM compares the SOC of the power battery with a first percentage, and in response to the SOC of the power battery being greater than the first percentage, the BCM obtains the current voltage of the battery. Exemplarily, the first percentage can be set based on experience, for example, the SOC of the power battery can be set to 20%.

[0046] In a possible implementation, after determining that the temperature of the battery is greater than or equal to the first temperature threshold and the SOC of the power battery is greater than the first percentage, the BCM obtains the current voltage of the battery, including: the BCM obtains the current voltage of the battery of the vehicle from the BMS through the VCU. Optionally, the BMS detects the voltage of the battery, and after obtaining the current voltage of the battery, transmits the current voltage of the battery to the VCU through the CAN bus. After receiving the current voltage of the battery, the VCU transmits the current voltage of the battery to the BCM through the CAN bus.

[0047] Exemplarily, in response to the SOC of the power battery being less than or equal to the first percentage, a prompt message indicating that the SOC of the power battery is too low is issued, including: the BCM reports a second prompt message to the TBOX via the CAN bus, and then prompts the driver via the APP of the vehicle terminal that the SOC of the power battery is too low to complete the charging. Optionally, the prompt method includes, but is not limited to, the BCM displays a text message "The SOC of the power battery is too low to complete the charging, and the battery is at risk of low power" via the APP of the vehicle terminal, or the BCM broadcasts a voice message "The SOC of the power battery is too low to complete the charging, and the battery is at risk of low power" via the audio of the vehicle terminal.

[0048] In step 205 , in response to the current voltage of the battery being less than the second voltage threshold, the BCM controls the power battery to supplement the battery, and the first voltage threshold is greater than the second voltage threshold.

[0049] Optionally, after obtaining the current voltage of the battery, the BCM compares the current voltage of the battery with a second voltage threshold. In response to the current voltage of the battery being less than the second voltage threshold, the BCM controls the power battery to replenish the battery, wherein the first voltage threshold is greater than the second voltage threshold.

[0050] Exemplarily, after obtaining the current voltage of the battery, if the current voltage of the battery is less than the second voltage threshold, the BCM controls the power battery to supplement the battery, including: the BCM sends a supplement request to the VCU; after receiving the supplement request, the VCU sends a high-voltage connection request to the BMS; after receiving the high-voltage connection request, the BMS controls the power battery to convert the high-voltage direct current into low-voltage direct current through DCDC, and supplements the battery through the low-voltage direct current. Optionally, the second voltage threshold can be set based on experience, and it is necessary to satisfy that the second voltage threshold is greater than the first voltage threshold.

[0051] In one possible implementation, after the power battery starts to recharge the storage battery, the BCM starts timing, and after a first preset time period, in response to the current voltage of the battery being less than a target voltage threshold, a prompt message of battery recharging failure is issued, and the target voltage threshold is greater than the first voltage threshold; within the first preset time period, in response to the current voltage of the battery being greater than or equal to the target voltage threshold, it is confirmed that the battery recharging is completed.

[0052] Exemplarily, after the first preset time, the BCM compares the current voltage of the battery with the target voltage threshold. If the current voltage of the battery is less than the target voltage threshold, a prompt message of battery recharging failure is issued, including: BCM reports a third prompt message to TBOX via the CAN bus, and then prompts the driver of the battery recharging failure through the APP of the vehicle terminal. Among them, the target voltage threshold is greater than the first voltage threshold. Optionally, the prompt method includes but is not limited to, BCM displays a text message of "battery recharging failure" through the APP of the vehicle terminal, or BCM broadcasts a voice message of "battery recharging failure" through the audio of the vehicle terminal.

[0053] In a possible implementation, within the first preset time, if the current voltage of the battery is greater than or equal to the target voltage threshold, the BCM confirms that the battery has completed charging. The BCM reports the fourth prompt information to the TBOX, and then prompts the driver through the APP of the vehicle terminal that the battery has completed charging.

[0054] Optionally, after confirming that the battery has completed charging, a first charging time from the start of charging to the completion of charging is obtained; a second preset time is determined based on the first charging time, and the second preset time indicates a preset time for the battery to start charging with an initial voltage next time, and is used to detect the completion of charging when charging starts with the initial voltage next time.

[0055] Exemplarily, the BCM records the time when the charging is completed, calculates the first charging time from the start of the charging to the completion of the charging of the battery based on the time when the charging is started and the time when the charging is completed, and then predicts the second preset time based on the first charging time, including: calculating the average of the charging time based on a certain number of charging times required to start the charging operation with the initial voltage as the second preset time, wherein the second preset time indicates the preset time for the battery to start the charging operation with the initial voltage next time, and is used to detect the completion of the charging when the charging operation is started with the initial voltage next time. The preset time of the charging operation corresponding to different initial voltages is counted in the same way.

[0056] In a possible implementation, during the battery charging process, the second charging time from the last battery charging to the current battery charging is obtained; and the time from the completion of the current battery charging to the start of the next battery charging is predicted based on the initial voltage of the battery and the second charging time. Optionally, after each battery charging is completed, the BCM records the time of each completed battery charging, and determines the second charging time from the last battery charging to the current battery charging based on the time of the last completed battery charging and the time of the current start of battery charging. If the initial voltage of the battery for this battery charging is low, for example, the initial voltage of the battery is lower than the second voltage threshold, indicating that the second charging time from the last battery charging to the current battery charging is too long, the time from the current battery charging to the next battery charging can be shortened based on experience, and the time interval for the next BCM self-wake-up can be shortened to avoid battery power shortage.

[0057] In a possible implementation, during the battery charging period and the interval between charging, the battery's SOH (State of Health) is obtained; in response to the battery's SOH being less than a second percentage, a prompt message indicating that the battery's SOH is too low is issued. Optionally, during the battery charging period and the interval between charging, the BCM obtains the battery's SOH from the BMS through the VCU, and then compares the battery's SOH with the second percentage. The battery's SOH is used to reflect the battery's health. When the SOH is low, the battery's ability to store electricity is weak.

[0058] Exemplarily, if the battery SOH is less than the second percentage, the BCM issues a prompt message that the battery SOH is too low, including: the BCM reports the fourth prompt message to the TBOX via the CAN bus, and then prompts the driver through the APP of the vehicle terminal that the battery SOH is too low. In a possible implementation, the prompt method includes but is not limited to the BCM displaying a text message "The battery SOH is too low, and it is easy to lose power" through the APP of the vehicle terminal, or the BCM broadcasting a voice message "The battery SOH is too low, and it is easy to lose power" through the audio of the vehicle terminal.

[0059] The embodiment of the present application obtains the initial voltage of the vehicle battery to determine whether it is necessary to wake up the controller to prepare for battery recharge, thereby avoiding the inability to wake up the controller when the battery power is too low; when the initial voltage of the battery is less than a first voltage threshold, the battery temperature and the SOC of the power battery are obtained to determine whether the current vehicle state is suitable for battery recharge; if the battery temperature is less than the first temperature threshold, the battery is heated to create a temperature environment suitable for battery charging; when the battery temperature is greater than or equal to the first temperature threshold and the SOC of the power battery is greater than a first percentage, it indicates that the current vehicle state is suitable for battery recharge, obtains the current voltage of the battery, and determines whether the battery needs to be recharged; when the current voltage of the battery is less than a second voltage threshold, it indicates that the battery needs to be recharged, and controls the power battery to recharge the battery, thereby improving the intelligence of the battery recharge operation and avoiding battery depletion, thereby ensuring normal starting and driving of the vehicle.

[0060] Combining the above methods, Figure 3 The battery recharging logic diagram of a vehicle provided in the embodiment of the present application shown is used as an example for illustration. The execution subject may be the BCM. Step 301, the vehicle is powered off. Step 302, the BCM wakes itself up at regular intervals to obtain the initial voltage of the vehicle's battery. Step 303, recording the second recharging time from the last time the battery was recharged to the current recharging. Step 304, determining whether the battery voltage is less than a first voltage threshold. If the battery voltage is less than the first voltage threshold, proceed to step 305; if the battery voltage is greater than or equal to the first voltage threshold, proceed to step 302. Step 305, the BCM obtains the battery temperature and the SOC of the power battery.

[0061] Step 306, determine whether the battery temperature is greater than or equal to the first temperature threshold, and the SOC of the power battery is greater than the first percentage. If the battery temperature is greater than or equal to the first temperature threshold, and the SOC of the power battery is greater than the first percentage, proceed to step 308; if the battery temperature is greater than or equal to the first temperature threshold, or the SOC of the power battery is greater than at least one of the first percentages, proceed to step 307. Step 307, BCM reports to TBOX, prompts through the APP of the vehicle terminal; BCM heats the battery. Step 308, BCM obtains the current voltage of the battery. Step 309, determine whether the battery voltage is less than the second voltage threshold. If the battery voltage is less than the second voltage threshold, proceed to step 310; if the battery voltage is greater than or equal to the second voltage threshold, proceed to step 302. Step 310, BCM controls the power battery to replenish the battery.

[0062] Step 311, determine whether the current voltage of the battery reaches the target voltage threshold within the first preset time. If the current voltage of the battery reaches the target voltage threshold within the first preset time, go to step 313; if the current voltage of the battery does not reach the target voltage threshold within the first preset time, go to step 312. Step 312, the charging fails, BCM reports to TBOX, and prompts through the APP of the vehicle terminal. Step 313, the charging is completed, BCM reports to TBOX, and prompts through the APP of the vehicle terminal. Step 314, obtain the first charging time from the start of charging to the completion of charging, and predict the preset time for the battery to start charging with the initial voltage next time based on the first charging time. Step 315, adjust the preset time for the next charging with the initial voltage and the time for the next self-wake-up of BCM. Step 316, the whole vehicle goes back to sleep.

[0063] See also Figure 4 , an embodiment of the present application provides a battery charging device for a vehicle, the device comprising:

[0064] A first acquisition module 401 is used to acquire an initial voltage of a battery of a vehicle;

[0065] A second acquisition module 402 is used to acquire the temperature of the storage battery and the state of charge SOC of the power battery in response to the initial voltage being less than the first voltage threshold, where the SOC of the power battery is used to indicate the percentage of the remaining power of the power battery to the total power;

[0066] A heating module 403, configured to heat the battery in response to the temperature of the battery being lower than a first temperature threshold;

[0067] A third acquisition module 404 is configured to acquire a current voltage of the battery in response to the temperature of the battery being greater than or equal to a first temperature threshold and the SOC of the power battery being greater than a first percentage;

[0068] The control module 405 is used to control the power battery to supplement the battery in response to the current voltage of the battery being less than the second voltage threshold, and the first voltage threshold is greater than the second voltage threshold.

[0069] In a possible implementation, the second acquisition module 402 is further configured to issue a prompt message indicating that the SOC of the power battery is too low in response to the SOC of the power battery being less than or equal to the first percentage.

[0070] In one possible implementation, the control module 405 is also used to issue a prompt message that the battery charging has failed in response to the current voltage of the battery being less than the target voltage threshold after a first preset time period, and the target voltage threshold is greater than the first voltage threshold; within the first preset time period, in response to the current voltage of the battery being greater than or equal to the target voltage threshold, confirming that the battery charging has been completed.

[0071] In a possible implementation, the device also includes: a fourth acquisition module, used to obtain a first charging time from the start of charging to the completion of charging of the battery; a determination module, used to determine a second preset time based on the first charging time, the second preset time indicating a preset time for the battery to start charging with an initial voltage next time, and used to detect the completion of charging when charging starts with the initial voltage next time.

[0072] In a possible implementation, the device further includes: a fifth acquisition module, configured to acquire the state of health SOH of the battery; and a prompt module, configured to issue a prompt message indicating that the SOH of the battery is too low in response to the SOH of the battery being less than a second percentage.

[0073] In a possible implementation, the device includes: a sixth acquisition module, used to obtain a second charging time from the last charging of the battery to the current charging; a prediction module, used to predict the time from the completion of the current charging to the start of the next charging based on the initial voltage of the battery and the second charging time.

[0074] The device obtains the initial voltage of the vehicle battery to determine whether it is necessary to wake up the controller to prepare for battery recharge, thereby avoiding the failure to wake up the controller when the battery power is too low; when the initial voltage of the battery is less than the first voltage threshold, the battery temperature and the SOC of the power battery are obtained to determine whether the current vehicle state is suitable for battery recharge; if the battery temperature is less than the first temperature threshold, the battery is heated to create a temperature environment suitable for battery charging; when the battery temperature is greater than or equal to the first temperature threshold and the SOC of the power battery is greater than the first percentage, it indicates that the current vehicle state is suitable for battery recharge, obtains the current voltage of the battery, and determines whether the battery needs to be recharged; when the current voltage of the battery is less than the second voltage threshold, it indicates that the battery needs to be recharged, and controls the power battery to recharge the battery, thereby improving the intelligence of the battery recharge operation and avoiding battery depletion, thereby ensuring normal starting and driving of the vehicle.

[0075] It should be noted that the device provided in the above embodiment only uses the division of the above functional modules as an example to implement its functions. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiment belong to the same concept, and their specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0076] In an exemplary embodiment, a computer-readable storage medium is also provided, in which at least one computer program is stored. The at least one computer program is loaded and executed by a processor of a computer device so that the computer implements any of the above-mentioned vehicle battery charging methods.

[0077] In one possible implementation, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0078] In an exemplary embodiment, a computer program product or a computer program is also provided, the computer program product or the computer program comprising computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes any of the above-mentioned methods for charging a battery of a vehicle.

[0079] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions. For example, the initial voltage of the battery, the temperature of the battery, the SOC of the power battery and the current voltage of the battery involved in this application are all obtained with full authorization.

[0080] It should be understood that the "plurality" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0081] It should be noted that the terms "first", "second", etc. (if any) in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0082] The above description is only an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for replenishing battery power of a vehicle, characterized in that: The method comprises: Obtaining the initial voltage of the vehicle's battery; In response to the initial voltage being less than a first voltage threshold, acquiring the temperature of the storage battery and the state of charge (SOC) of the power battery, where the SOC of the power battery is used to indicate the percentage of the remaining power of the power battery to the total power; In response to a temperature of the battery being less than a first temperature threshold, heating the battery; In response to the temperature of the battery being greater than or equal to the first temperature threshold, and the SOC of the power battery being greater than a first percentage, obtaining a current voltage of the battery; In response to the current voltage of the storage battery being less than a second voltage threshold, the power battery is controlled to supplement power for the storage battery, and the first voltage threshold is greater than the second voltage threshold.

2. The method according to claim 1, characterized in that After obtaining the SOC of the power battery, it also includes: In response to the SOC of the power battery being less than or equal to the first percentage, a prompt message indicating that the SOC of the power battery is too low is issued.

3. The method according to claim 1, characterized in that After controlling the power battery to supplement the storage battery, the method further includes: After a first preset time, in response to the current voltage of the battery being less than a target voltage threshold, a prompt message indicating that the battery recharging has failed is issued, and the target voltage threshold is greater than the first voltage threshold; Within the first preset time period, in response to the current voltage of the battery being greater than or equal to the target voltage threshold, it is confirmed that the battery has completed charging.

4. The method according to claim 3, characterized in that The method further comprises: Obtaining a first charging time from the start of charging of the battery to the completion of charging; A second preset duration is determined based on the first charging duration, the second preset duration indicating a preset duration for the battery to start charging at the initial voltage next time, and is used to detect the completion of charging when charging at the initial voltage next time.

5. The method according to claim 1, characterized in that: The method further comprises: Obtaining the state of health SOH of the battery; In response to the SOH of the battery being less than a second percentage, a prompt message indicating that the SOH of the battery is too low is issued.

6. The method according to claim 1, characterized in that The method comprises: Obtaining a second charging time from the last charging of the battery to the current charging; The duration from the completion of current charging to the start of next charging is predicted based on the initial voltage of the battery and the second charging duration.

7. A battery charging device for a vehicle, characterized in that: The device comprises: A first acquisition module, used to acquire an initial voltage of a battery of a vehicle; a second acquisition module, configured to acquire the temperature of the storage battery and the SOC of the power battery in response to the initial voltage being less than a first voltage threshold, wherein the SOC of the power battery is used to indicate a percentage of the remaining power of the power battery to the total power; a heating module, configured to heat the battery in response to the temperature of the battery being lower than a first temperature threshold; a third acquisition module, configured to acquire a current voltage of the battery in response to the temperature of the battery being greater than or equal to the first temperature threshold and the SOC of the power battery being greater than a first percentage; The control module is used to control the power battery to supplement the battery in response to the current voltage of the battery being less than a second voltage threshold, and the first voltage threshold is greater than the second voltage threshold.

8. The device according to claim 7, characterized in that The second acquisition module is further configured to issue a prompt message indicating that the SOC of the power battery is too low in response to the SOC of the power battery being less than or equal to the first percentage.

9. A computer program product, comprising computer instructions, which, when executed by a processor, implement the steps of the vehicle battery charging method according to any one of claims 1 to 6.

10. A non-transitory computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program is loaded and executed by a processor to implement the battery charging method for a vehicle as described in any one of claims 1 to 6.

Images