Battery charging method and device for vehicle and storage medium

Abstract

The application discloses a battery charging method and device of a vehicle and a storage medium, and belongs to the technical field of vehicle control. The method comprises the following steps: acquiring an initial voltage of a battery of the vehicle; in response to the initial voltage being less than a first voltage threshold, acquiring a temperature of the battery and a state of charge (SOC) of a power battery, wherein the SOC of the power battery is used to indicate a percentage of a remaining amount of electricity of the power battery in a total amount of electricity; in response to the 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, acquiring a current voltage of the battery; and in response to the current voltage of the battery being less than a second voltage threshold, controlling the power battery to charge the battery, wherein the first voltage threshold is greater than the second voltage threshold. The intelligence of the battery charging operation is improved, the battery is prevented from being discharged, the battery health is ensured, and thus the normal starting and driving of the vehicle are ensured.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of vehicle control, in particular to a battery charging method and device for a vehicle and a storage medium. BACKGROUND

[0002] The battery is very important for the start of a new energy vehicle. If the battery is out of power, it will affect the normal start of the vehicle, thereby causing a bad driving experience for the user. In related technologies, the battery power is checked at fixed time after the vehicle is powered off, and the battery is charged if the power is too low.

[0003] In related technologies, the battery power is detected and charged at fixed time, which cannot guarantee the health of the battery power during driving, and can easily cause excessive checking of the battery power. How to intelligently charge the battery of the vehicle to ensure the health of the battery, thereby ensuring the normal start and driving of the vehicle, is a problem to be solved. SUMMARY

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

[0005] On the one hand, the present application provides a battery charging method for a vehicle, which comprises:

[0006] obtaining an initial voltage of a battery of a vehicle;

[0007] in response to the initial voltage being less than a first voltage threshold, obtaining a temperature of the battery and an SOC of a power battery, the SOC of the power battery being used to indicate a percentage of a remaining power of the power battery to a total power;

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

[0009] 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;

[0010] in response to the current voltage of the battery being less than a second voltage threshold, controlling the power battery to charge the battery, the first voltage threshold being greater than the second voltage threshold.

[0011] On the other hand, a battery charging device for a vehicle is provided, which comprises:

[0012] a first obtaining module configured to obtain an initial voltage of a battery of a vehicle;

[0013] a second obtaining module, configured to, in response to the initial voltage being less than a first voltage threshold, obtain a temperature of the battery and a SOC of a power battery, the SOC of the power battery being used to indicate a percentage of a remaining amount of electricity of the power battery in a total amount of electricity;

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

[0015] a third obtaining module, configured to, 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, obtain a current voltage of the battery;

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

[0017] In another aspect, a non-transitory computer-readable storage medium is also provided, and the computer-readable storage medium stores a computer program, which is loaded and executed by a processor to implement the battery supplementing method of the vehicle.

[0018] In another aspect, a computer program product is also provided, and the computer program product includes computer instructions, which, when executed by a processor, implement the steps of the battery supplementing method of the vehicle.

[0019] The technical scheme provided in the application at least brings the following beneficial effects:

[0020] The application obtains an initial voltage of a battery of a vehicle, judges whether a controller needs to be woken up to prepare for supplementing electricity to the battery, and avoids the situation that the controller cannot be woken up when the amount of electricity of the battery is too low. In the case that the initial voltage of the battery is less than a first voltage threshold, the temperature of the battery and the SOC of a power battery are obtained, and it is judged whether the current state of the vehicle is suitable for supplementing electricity to the battery. If the temperature of the battery is less than a first temperature threshold, the battery is heated to create a temperature environment suitable for charging the battery. In the case 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 a first percentage, it is indicated that the current state of the vehicle is suitable for supplementing electricity to the battery, the current voltage of the battery is obtained, and it is judged whether the battery needs to be supplemented with electricity. In the case that the current voltage of the battery is less than a second voltage threshold, it is indicated that the battery needs to be supplemented with electricity, and the power battery is controlled to supplement electricity to the battery. The technical scheme improves the intelligence of the battery supplementing operation, avoids the situation that the battery is depleted, guarantees the health of the battery, and thus guarantees the normal starting and driving of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

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

[0023] Figure 2 is a flowchart of a method for supplementing power to a battery of a vehicle provided by an embodiment of the present application;

[0024] Figure 3 is a logic diagram of a method for supplementing power to a battery of a vehicle provided by an embodiment of the present application;

[0025] Figure 4 is a structural schematic diagram of a device for supplementing power to a battery of a vehicle provided by an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail with reference to the drawings.

[0027] The present application provides a method for supplementing power to a battery of a vehicle, please refer to Figure 1 , which shows a schematic diagram of an implementation environment of the method provided by an embodiment of the present application. The implementation environment can include: a BCM (Body Control Module, vehicle body control module) 11, a VCU (Vehicle Control Unit, vehicle controller) 12, a BMS (Battery Management System, battery management system) 13, a DCDC (DC to DC converter, direct current-dc converter) 14, an ECC (Electronic Climate Control System, electronic thermostat control system) 15, a TBOX (Telematics BOX, intelligent vehicle terminal) 16 and an APP (Application, application program) 17.

[0028] Optionally, the BCM 11 acquires an initial voltage of the battery of the vehicle from the BMS 13 through the VCU 12. In response to the initial voltage being less than a first voltage threshold, the BCM 11 acquires a temperature of the battery and an SOC of the power battery from the BMS 13 through the VCU 12. In response to the temperature of the battery being less than a first temperature threshold, the BCM 11 controls the ECC 15 to heat the battery through the VCU 12. After a first preset time period elapses in response to the heating of the battery, if the temperature of the battery has not reached the first temperature threshold, the BCM 11 reports a first prompt information to the TBOX 16, and prompts the driver through the APP 17 of the vehicle terminal that the battery cannot complete the power compensation due to the temperature being too low.

[0029] Illustratively, 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 BCM 11 acquires a current voltage of the battery of the vehicle from the BMS 13 through the VCU 12. In response to the SOC of the power battery being less than or equal to the first percentage, the BCM 11 reports a second prompt information to the TBOX 16, and prompts the driver through the APP 17 of the vehicle terminal that the SOC of the power battery is too low to complete the power compensation.

[0030] In a possible implementation, in response to the current voltage of the battery being less than a second voltage threshold, the BCM 11 sends a power compensation request to the VCU 12; after receiving the power compensation request, the VCU 12 sends a high-voltage connection request to the BMS 13; after receiving the high-voltage connection request, the BMS 13 controls the power battery to convert high-voltage direct current into low-voltage direct current through the DCDC 14, and compensates the battery with the low-voltage direct current.

[0031] Illustratively, after a first preset time period elapses in response to the current voltage of the battery being less than a target voltage threshold, the BCM 11 reports a third prompt information to the TBOX 16, and prompts the driver through the APP 17 of the vehicle terminal that the battery fails to complete the power compensation. If the current voltage of the battery is greater than or equal to the target voltage threshold within the first preset time period, the BCM 11 confirms that the battery completes the power compensation. The BCM 11 reports a fourth prompt information to the TBOX 16, and prompts the driver through the APP 17 of the vehicle terminal that the battery completes the power compensation.

[0032] Wherein, the BCM 11, the VCU 12, the BMS 13, the DCDC 14, the ECC 15, the TBOX 16 and the APP 17 establish a communication connection through a wired or wireless network.

[0033] Based on the above Figure 1 The embodiment of the present application provides a battery power compensation method of a vehicle as shown in the embodiment environment. Figure 2 Taking the BCM as an example, the method comprises steps 201-205.

[0034] In step 201, the BCM acquires an initial voltage of a battery of the vehicle.

[0035] In a possible implementation, after the vehicle is powered off, the BCM acquires the initial voltage of the battery of the vehicle after the BCM wakes up by itself at a certain time interval, including: the BCM acquires the initial voltage of the battery of the vehicle from the BMS through the VCU. Optionally, the BMS detects the voltage of the battery, and after acquiring 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 a first voltage threshold, the BCM acquires a temperature of the battery and a SOC (State of Charge) of the power battery, the SOC of the power battery being used to indicate a percentage of a remaining amount of electricity of the power battery to a total amount of electricity.

[0037] Exemplarily, after acquiring the initial voltage of the battery, the BCM compares the initial voltage of the battery with the first voltage threshold, and in response to the initial voltage being less than the first voltage threshold, the BCM acquires the temperature of the battery and the SOC of the power battery, the SOC of the power battery being used to indicate the percentage of the remaining amount of electricity of the power battery to the total amount of electricity.

[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 acquiring 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 through 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 through 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 obtaining the temperature of the battery, the BCM compares the temperature of the battery with the 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 by the VCU. Optionally, the VCU controls the ECC to heat the battery, including: the VCU controls the ECC to connect the power supply to the battery heating module, and the heating module of the ECC converts the electric 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 by the BMS, and in response to the temperature of the battery reaching the first temperature threshold, the VCU controls the ECC to stop heating and disconnect the power supply. Optionally, the first temperature threshold can be set empirically.

[0043] Exemplarily, in response to the duration of heating the battery exceeding the first preset duration, if the temperature of the battery does not reach the first temperature threshold all the time, the BCM reports first prompt information to the TBOX through the CAN bus, and then prompts the driver through the APP of the vehicle terminal that the battery cannot complete power compensation due to the temperature being too low. Optionally, the way of prompting the driver includes but is not limited to: displaying the text information “the battery temperature is too low to complete power compensation” through the APP of the vehicle terminal, or playing the voice information “the battery temperature is too low to complete power compensation” through the sound of the vehicle terminal.

[0044] In step 204, 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 the 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 the 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 empirically, 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 by 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, the prompt information that the SOC of the power battery is too low is sent, including: the BCM reports the second prompt information to the TBOX through the CAN bus, and then prompts the driver through the APP of the vehicle terminal that the SOC of the power battery is too low and cannot complete the power compensation. Optionally, the prompting mode includes but is not limited to that the BCM displays the text information of "the SOC of the power battery is too low and cannot complete the power compensation, and the storage battery has the risk of power loss" through the APP of the vehicle terminal, or the BCM plays the voice information of "the SOC of the power battery is too low and cannot complete the power compensation, and the storage battery has the risk of power loss" through the audio of the vehicle terminal.

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

[0049] Optionally, after obtaining the current voltage of the storage battery, the BCM compares the current voltage of the storage battery with the second voltage threshold, and in response to the current voltage of the storage battery being less than the second voltage threshold, the BCM controls the power battery to compensate the storage battery, and the first voltage threshold is greater than the second voltage threshold.

[0050] Exemplarily, after obtaining the current voltage of the storage battery, if the current voltage of the storage battery is less than the second voltage threshold, the BCM controls the power battery to compensate the storage battery, including: the BCM sends a compensation request to the VCU; after receiving the compensation 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 high-voltage direct current into low-voltage direct current through the DCDC, and compensates the storage battery through the low-voltage direct current. Optionally, the second voltage threshold can be set according to experience, and needs to meet that the second voltage threshold is greater than the first voltage threshold.

[0051] In a possible implementation, after the power battery starts to compensate the storage battery, the BCM starts timing, and after a first preset time length, in response to the current voltage of the storage battery being less than a target voltage threshold, the prompt information that the compensation of the storage battery fails is sent, and the target voltage threshold is greater than the first voltage threshold; and within the first preset time length, in response to the current voltage of the storage battery being greater than or equal to the target voltage threshold, it is confirmed that the compensation of the storage battery is completed.

[0052] Exemplarily, after the first preset time length, the BCM compares the current voltage of the battery with the target voltage threshold, and if the current voltage of the battery is less than the target voltage threshold, a prompt information of battery charging failure is sent, including: the BCM reports the third prompt information to the TBOX through the CAN bus, and then prompts the driver of battery charging failure through the APP of the vehicle terminal. Wherein, the target voltage threshold is greater than the first voltage threshold. Optionally, the prompt mode includes but is not limited to that the BCM displays the text information of "battery charging failure" through the APP of the vehicle terminal, or the BCM plays the voice information of "battery charging failure" through the audio of the vehicle terminal.

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

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

[0055] Exemplarily, the BCM records the time of charging completion, calculates the first charging time length from the start of charging to the completion of charging based on the time of charging start and the time of charging completion, and then predicts the second preset time length according to the first charging time length, including: calculating the average of the charging time length according to the charging time length required by a certain number of charging operations starting at the initial voltage, as the second preset time length, wherein the second preset time length indicates a preset time length for the next time when the battery starts charging at the initial voltage, and is used to detect the completion of charging when the next time charging starts at the initial voltage. According to the same method, the preset time length of the charging operation corresponding to different initial voltages is counted.

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

[0057] In a possible implementation, during the process of battery charging and the charging interval, the SOH (State of Health) of the battery is obtained; and a prompt information of the SOH of the battery being too low is sent in response to the SOH of the battery being less than a second percentage. Optionally, during the process of battery charging and the charging interval, the BCM obtains the SOH of the battery from the BMS through the VCU, and compares the SOH of the battery with the second percentage. The SOH of the battery is used to reflect the health degree of the battery, and when the SOH is low, the ability of the battery to store power is weak.

[0058] Exemplarily, if the SOH of the battery is less than the second percentage, the BCM sends the prompt information of the SOH of the battery being too low, including: the BCM reports a fourth prompt information to the TBOX through the CAN bus, and prompts the driver that the SOH of the battery is too low through the APP of the vehicle terminal. In a possible implementation, the prompting manner includes but is not limited to: the BCM displays the text information of “the SOH of the battery is too low, and power loss is easy to occur” through the APP of the vehicle terminal, or the BCM plays the voice information of “the SOH of the battery is too low, and power loss is easy to occur” through the audio of the vehicle terminal.

[0059] The embodiment of the application avoids that the controller cannot be woken up when the power of the storage battery is too low by acquiring the initial voltage of the storage battery, judging whether the controller needs to be woken up to prepare for charging the storage battery, acquiring the temperature of the storage battery and the SOC of the power battery when the initial voltage of the storage battery is less than the first voltage threshold, judging whether the current vehicle state is suitable for charging the storage battery, heating the storage battery to create a temperature environment suitable for charging the storage battery when the temperature of the storage battery is less than the first temperature threshold, judging whether the storage battery needs to be charged when the temperature of the storage battery is greater than or equal to the first temperature threshold and the SOC of the power battery is greater than the first percentage, and indicating that the storage battery needs to be charged and controlling the power battery to charge the storage battery when the current voltage of the storage battery is less than the second voltage threshold, thereby improving the intelligence of the storage battery charging operation and avoiding the power loss of the storage battery, so as to ensure the normal starting and driving of the vehicle.

[0060] The embodiment of the application is described by taking the storage battery charging logic diagram of a vehicle as an example in combination with the above method process. Figure 3 The execution subject can be the BCM. In step 301, the vehicle is powered off. In step 302, the BCM wakes up every certain time, and acquires the initial voltage of the storage battery of the vehicle. In step 303, the second charging duration from the last charging to the current charging of the storage battery is recorded. In step 304, it is judged whether the voltage of the storage battery is less than the first voltage threshold. If the voltage of the storage battery is less than the first voltage threshold, step 305 is entered; if the voltage of the storage battery is greater than or equal to the first voltage threshold, step 302 is entered. In step 305, the BCM acquires the temperature of the storage battery and the SOC of the power battery.

[0061] In step 306, it is judged whether the temperature of the storage battery 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 temperature of the storage battery is greater than or equal to the first temperature threshold and the SOC of the power battery is greater than the first percentage, step 308 is entered; if at least one of the temperature of the storage battery being greater than or equal to the first temperature threshold or the SOC of the power battery being greater than the first percentage is not met, step 307 is entered. In step 307, the BCM reports to the TBOX and prompts through the APP of the vehicle terminal; the BCM heats the storage battery. In step 308, the BCM acquires the current voltage of the storage battery. In step 309, it is judged whether the voltage of the storage battery is less than the second voltage threshold. If the voltage of the storage battery is less than the second voltage threshold, step 310 is entered; if the voltage of the storage battery is greater than or equal to the second voltage threshold, step 302 is entered. In step 310, the BCM controls the power battery to charge the storage battery.

[0062] Step 311, it is judged whether the current voltage of the battery reaches the target voltage threshold within the first preset time length. If the current voltage of the battery reaches the target voltage threshold within the first preset time length, step 313 is entered; if the current voltage of the battery does not reach the target voltage threshold within the first preset time length, step 312 is entered. Step 312, the power compensation fails, the BCM reports the TBOX, and the APP prompt of the vehicle terminal is prompted. Step 313, the power compensation is completed, the BCM reports the TBOX, and the APP prompt of the vehicle terminal is prompted. Step 314, the first power compensation time length from the start of the battery power compensation to the completion of the power compensation is obtained, and the preset time length of the next time the battery starts the power compensation with the initial voltage is predicted based on the first power compensation time length. Step 315, the preset time length of the next time the battery starts the power compensation with the initial voltage is adjusted, and the time of the next time the BCM wakes up itself. Step 316, the whole vehicle reenters the sleep state.

[0063] Referring to Figure 4 The embodiments of the present application provide a battery power compensation device of a vehicle, which comprises:

[0064] The first acquisition module 401 is configured to acquire an initial voltage of a battery of a vehicle.

[0065] The second acquisition module 402 is configured to acquire a temperature of the battery and a state of charge (SOC) of a power battery in response to the initial voltage being less than a first voltage threshold, the SOC of the power battery being used to indicate a percentage of a remaining amount of electricity of the power battery in a total amount of electricity.

[0066] The heating module 403 is configured to heat the battery in response to the temperature of the battery being less than a first temperature threshold.

[0067] The 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 the first temperature threshold and the SOC of the power battery being greater than a first percentage.

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

[0069] In a possible implementation, the second acquisition module 402 is further configured to send a prompt information 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 a possible implementation, the control module 405 is further configured to send a prompt information that the battery power compensation fails in response to the current voltage of the battery being less than a target voltage threshold after a first preset time length, the target voltage threshold being greater than the first voltage threshold; and confirm that the battery completes the power compensation in response to the current voltage of the battery being greater than or equal to the target voltage threshold within the first preset time length.

[0071] In a possible implementation, the apparatus further includes a fourth acquisition module, configured to acquire a first charging duration from when the battery starts charging to when the charging is completed; and a determination module, configured to determine a second preset duration 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 to detect the completion of the charging next time the battery starts charging at the initial voltage.

[0072] In a possible implementation, the apparatus further includes a fifth acquisition module, configured to acquire a state of health (SOH) of the battery; and a prompt module, configured to issue a prompt message 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 apparatus includes a sixth acquisition module, configured to acquire a second charging duration from when the battery last charged to when the battery is currently charged; and a prediction module, configured to predict a duration from when the current charging is completed to when the battery starts charging next time based on the initial voltage of the battery and the second charging duration.

[0074] The apparatus acquires the initial voltage of the vehicle battery, determines whether the controller needs to be woken up to prepare for charging the battery, and avoids the situation that the controller cannot be woken up when the battery has too low a power level. In the case that the initial voltage of the battery is less than a first voltage threshold, the temperature of the battery and the state of charge (SOC) of the power battery are acquired, and it is determined whether the current vehicle state is suitable for charging the battery. If the temperature of the battery is less than a first temperature threshold, the battery is heated to create a temperature environment suitable for charging the battery. In the case 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 a first percentage, it is indicated that the current vehicle state is suitable for charging the battery, the current voltage of the battery is acquired, and it is determined whether the battery needs to be charged. In the case that the current voltage of the battery is less than a second voltage threshold, it is indicated that the battery needs to be charged, and the power battery is controlled to charge the battery. The apparatus improves the intelligence of the battery charging operation, avoids the situation that the battery has a low power level, and thus ensures normal starting and driving of the vehicle.

[0075] It should be noted that the apparatus provided in the above embodiments is only used as an example for the division of the above functional modules in achieving the functions thereof, and in actual applications, the above functions can be completed by different functional modules according to the needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is described in detail in the method embodiments, which will not be repeated here.

[0076] In an example embodiment, a computer readable storage medium is also provided, and the computer readable storage medium stores at least one computer program, which is loaded and executed by a processor of a computer device to enable the computer to implement any of the above battery charging methods for a vehicle.

[0077] In a possible implementation manner, the computer readable storage medium can be a Read-Only Memory (ROM), a Random Access Memory (RAM), a Compact Disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, or the like.

[0078] In an example embodiment, a computer program product or computer program is also provided, and the computer program product or computer program includes computer instructions stored in a computer readable storage medium. The computer instructions are read by a processor of a computer device, and the processor executes the computer instructions to enable the computer device to implement any of the above battery charging methods for 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 for analysis, stored data, displayed data, etc.) and signals involved in the present application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of related data need to 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 the present application are all obtained under sufficient authorization.

[0080] It should be understood that "a plurality of" mentioned in the present document refers to two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0081] It should be noted that the terms "first", "second", and the like, if any, in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of such terms is interchangeable under appropriate circumstances such that the embodiments of the present application described herein are capable of operation in other sequences than those described or otherwise suggested herein. The embodiments described in the following examples do not represent all of the ways of operating within the scope of the present application. Rather, they are illustrative of apparatuses and methods in conformance with some aspects of the present application as detailed in the appended claims.

[0082] The above description is merely illustrative of the exemplary embodiments of the present application and is not intended to limit the scope of the application. Any modification, equivalent substitution, improvement, and the like, which are made within the principles of the present application, should be included in the scope of the present application.

Claims

1. A method of jump starting a vehicle, characterized by, The method comprises: obtaining an initial voltage of a battery of a vehicle; in response to the initial voltage being less than a first voltage threshold, obtaining a temperature of the battery and a state of charge (SOC) of a power battery, the SOC of the power battery being used to indicate a percentage of a remaining amount of electricity of the power battery to a total amount of electricity; in response to the 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 battery being less than a second voltage threshold, controlling the power battery to supplement electricity to the battery, the first voltage threshold being greater than the second voltage threshold; after a first preset time period, in response to the current voltage of the battery being less than a target voltage threshold, issuing prompt information that the battery fails to supplement electricity, the target voltage threshold being 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 completes the supplement of electricity; obtaining a second supplement time period from a previous supplement of electricity of the battery to the present supplement of electricity; based on the initial voltage of the battery and the second supplement time period, predicting a time period from the present completion of the supplement of electricity to a next start of the supplement of electricity.

2. The method of claim 1, wherein, After obtaining the SOC of the power battery, the method further comprises: in response to the SOC of the power battery being less than or equal to the first percentage, issuing prompt information that the SOC of the power battery is too low.

3. The method of claim 1, wherein, The method further comprises: obtaining a first supplement time period from a start of the supplement of electricity of the battery to a completion of the supplement of electricity; based on the first supplement time period, determining a second preset time period, the second preset time period indicating a preset time period for the next start of the supplement of electricity of the battery at the initial voltage, and being used to detect a completion condition of the supplement of electricity when the next start of the supplement of electricity is at the initial voltage.

4. The method of claim 1, wherein, The method further comprises: obtaining a state of health (SOH) of the battery; in response to the SOH of the battery being less than a second percentage, issuing prompt information that the SOH of the battery is too low.

5. A battery charging device for a vehicle, characterized by comprising: The apparatus comprises: a first obtaining module configured to obtain an initial voltage of a battery of a vehicle; a second obtaining module configured to, in response to the initial voltage being less than a first voltage threshold, obtain a temperature of the battery and a state of charge (SOC) of a power battery, the SOC of the power battery being used to indicate a percentage of a remaining amount of electricity of the power battery to a total amount of electricity; a heating module configured to, in response to the temperature of the battery being less than a first temperature threshold, heat the battery; a third obtaining module configured to, 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, obtain a current voltage of the battery; a control module configured to, in response to the current voltage of the battery being less than a second voltage threshold, control the power battery to supplement electricity to the battery, the first voltage threshold being greater than the second voltage threshold. after the first preset time length, in response to the current voltage of the battery being less than a target voltage threshold, the target voltage threshold being greater than the first voltage threshold, issuing prompt information that the battery fails to complete power compensation; within the first preset time length, in response to the current voltage of the battery being greater than or equal to the target voltage threshold, confirming that the battery completes power compensation; acquiring a second power compensation time length from the last power compensation to the present power compensation of the battery; based on the initial voltage of the battery and the second power compensation time length, predicting a time length from the present power compensation to the next power compensation start.

6. The apparatus of claim 5, wherein, The second acquisition module is further configured to, in response to the SOC of the power battery being less than or equal to the first percentage, issue prompt information that the SOC of the power battery is too low. 7.A computer program product, comprising computer instructions, which, when executed by a processor, implement the steps of the battery power compensation method of the vehicle according to any one of claims 1 to 6.

8. A non-transitory computer-readable storage medium, comprising: The computer program is stored in the computer readable storage medium and loaded and executed by the processor to implement the battery power compensation method of the vehicle according to any one of claims 1 to 6.

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