Charging method and device for vehicle storage battery

Abstract

The invention relates to the technical field of vehicles, in particular to a vehicle storage battery charging method and device.The method comprises the steps that whether a vehicle is in an engine shutdown working condition or not is detected; when it is detected that the vehicle is in the engine shutdown working condition, the actual voltage of a vehicle storage battery is collected, and the minimum voltage threshold value of the vehicle storage battery is determined according to the environment temperature of the environment where the vehicle is located; whether the actual voltage is lower than the minimum voltage threshold value or not is judged, and if the actual voltage is lower than the minimum voltage threshold value, a power battery of the vehicle is controlled to charge a storage battery of the vehicle. Therefore, the problems that in the prior art, the voltage state of the storage battery can only be detected within the set time, the voltage state of the storage battery cannot be detected in real time, the real-time performance of detection is reduced, the voltage of the storage battery cannot be detected from multiple aspects, the risk of power shortage of the storage battery is increased, and the service life of the storage battery is shortened are solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method and device for charging a vehicle battery. Background Technology

[0002] In real life, construction machinery products such as mixer trucks and pump trucks require a lot of idling waiting conditions during construction. When the mixer truck is waiting, the tank needs to maintain low-speed rotation, and when the pump truck is waiting for materials, the hopper blades need to be stirred to prevent the concrete from solidifying. The idling time accounts for a high proportion, causing the engine to work in a non-energy-saving range for a long time, and the long idling time makes the engine prone to carbon accumulation. At this time, the motor drive can be used to provide power for the mixing of the mixer tank or the stirring of the hopper blades of the pump truck. At the same time, a power battery or external power supply can be configured to provide energy for the motor to stop the engine from working, which can achieve the purpose of saving fuel.

[0003] In the related technology, when the engine stops, the low-voltage electrical equipment of the vehicle will be powered by the battery. Therefore, the battery voltage status can be automatically detected after a certain period of time. When the battery voltage is lower than the threshold, the power battery is used to charge the battery to reduce battery power loss.

[0004] However, the related technology can only detect the battery voltage status within a specified time, and cannot detect the battery voltage status in real time, which reduces the real-time nature of the detection, and cannot detect the battery voltage from multiple aspects, increasing the risk of battery power loss and reducing the battery life, which needs to be solved urgently. SUMMARY OF THE INVENTION

[0005] The present application provides a vehicle battery charging method and device to solve the problem that the battery voltage state can only be detected within a specified time in the related art, but cannot be detected in real time, which reduces the real-time performance of the detection, and cannot detect the battery voltage from multiple aspects, which increases the risk of battery power loss and reduces the service life of the battery.

[0006] The first aspect of the present application provides a method for charging a vehicle battery, comprising the following steps: detecting whether the vehicle is in an engine shutdown condition; when the vehicle is detected to be in the engine shutdown condition, collecting the actual voltage of the vehicle battery, and determining the minimum voltage threshold of the vehicle battery according to the ambient temperature of the vehicle environment; judging whether the actual voltage is lower than the minimum voltage threshold, wherein if the actual voltage is lower than the minimum voltage threshold, controlling the power battery of the vehicle to charge the vehicle battery.

[0007] Optionally, in an embodiment of the present application, after determining the minimum voltage threshold of the vehicle battery, the method further includes: collecting the supply load current of the vehicle battery; when the supply load current is greater than a preset load current, optimizing the minimum voltage threshold according to the supply load current.

[0008] Optionally, in an embodiment of the present application, after controlling the power battery of the vehicle to charge the vehicle battery, the method further includes: determining whether the actual voltage is higher than a preset full charge threshold; if it is higher than the preset full charge threshold, stopping charging the vehicle battery.

[0009] Optionally, in an embodiment of the present application, after controlling the power battery of the vehicle to charge the vehicle battery, the method further includes: collecting the discharge threshold of the power battery; determining whether the discharge threshold is less than a preset minimum discharge threshold; if the discharge threshold is less than the preset minimum discharge threshold and the duration is greater than a preset duration, starting the engine of the vehicle to charge the power battery and the vehicle battery together.

[0010] Optionally, in an embodiment of the present application, the method further includes: receiving an enabling instruction from a user; according to the enabling instruction, controlling the vehicle to start the engine.

[0011] An embodiment of the second aspect of the present application provides a charging device for a vehicle battery, including: a detection module, configured to detect whether the vehicle is in an engine-off condition; a processing module, configured to collect the actual voltage of the vehicle battery when it is detected that the vehicle is in the engine-off condition, and determine the minimum voltage threshold of the vehicle battery according to the ambient temperature of the environment where the vehicle is located; a control module, configured to determine whether the actual voltage is lower than the minimum voltage threshold, wherein if the actual voltage is lower than the minimum voltage threshold, controlling the power battery of the vehicle to charge the vehicle battery.

[0012] Optionally, in an embodiment of the present application, the device according to the embodiment of the present application further includes: a collection module, configured to collect the supply load current of the vehicle battery after determining the minimum voltage threshold of the vehicle battery; an optimization module, configured to optimize the minimum voltage threshold according to the supply load current when the supply load current is greater than a preset load current after determining the minimum voltage threshold of the vehicle battery.

[0013] Optionally, in an embodiment of the present application, the device in the embodiment of the present application further includes: a judgment module, configured to judge whether the actual voltage is higher than a preset full charge threshold after controlling the power battery of the vehicle to charge the vehicle battery; a processing module, configured to stop charging the vehicle battery if it is higher than the preset full charge threshold after controlling the power battery of the vehicle to charge the vehicle battery.

[0014] Optionally, in an embodiment of the present application, the device in the embodiment of the present application further includes: a collection module, configured to collect the discharge threshold of the power battery after controlling the power battery of the vehicle to charge the vehicle battery; a judgment module, configured to judge whether the discharge threshold is less than a preset minimum discharge threshold after controlling the power battery of the vehicle to charge the vehicle battery; a processing module, configured to start the engine of the vehicle to charge the power battery and the vehicle battery jointly if the discharge threshold is less than the preset minimum discharge threshold and the duration is greater than a preset duration after controlling the power battery of the vehicle to charge the vehicle battery.

[0015] Optionally, in an embodiment of the present application, the device in the embodiment of the present application further includes: a receiving module, configured to receive an opening instruction from the user; a control module, configured to control the vehicle to start the engine according to the opening instruction.

[0016] An embodiment of the third aspect of the present application provides a vehicle, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the program to implement the charging method for the vehicle battery as described in the above embodiment.

[0017] An embodiment of the fourth aspect of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the program is executed by a processor, the charging method for the vehicle battery as described above is implemented.

[0018] In the embodiment of the present application, when it is detected that the vehicle is in an engine shutdown condition, the actual voltage of the vehicle battery can be collected, and the minimum voltage threshold of the vehicle battery can be determined according to the ambient temperature of the environment where the vehicle is located. When the actual voltage is lower than the minimum voltage threshold, the power battery of the vehicle is controlled to charge the vehicle battery, so that the voltage state of the battery can be detected in real time, the real-time performance of the detection is effectively improved, the risk of battery discharge is reduced, and the service life of the battery is extended. Thus, the problem in the related art that the voltage state of the battery can only be detected within a specified time, the voltage state of the battery cannot be detected in real time, the real-time performance of the detection is reduced, and the voltage of the battery cannot be detected from multiple aspects, increasing the risk of battery discharge and reducing the service life of the battery is solved.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above-mentioned and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 FIG. is a flowchart of a method for charging a vehicle battery according to an embodiment of the present application;

[0022] Figure 2 FIG. is a schematic diagram showing the relationship between the depth of discharge and the battery life in the related art;

[0023] Figure 3 FIG. is a schematic structural diagram of the charging of a vehicle battery according to a specific embodiment of the present application;

[0024] Figure 4 FIG. is a schematic diagram of the principle of the charging of a vehicle battery according to a specific embodiment of the present application;

[0025] Figure 5 FIG. is a schematic diagram of the principle after turning on DCDC (DC-to-DC converter) charging according to a specific embodiment of the present application;

[0026] Figure 6 FIG. is a schematic structural diagram of a device for charging a vehicle battery according to an embodiment of the present application;

[0027] Figure 7 FIG. is a schematic structural diagram of a vehicle according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0029] The charging method and device for a vehicle battery according to an embodiment of the present application will be described below with reference to the accompanying drawings. In view of the problem in the related art mentioned in the above background art that only the voltage state of the battery can be detected within a specified time, the voltage state of the battery cannot be detected in real time, which reduces the real-time performance of the detection, and the voltage of the battery cannot be detected from multiple aspects, increasing the risk of battery discharge and reducing the service life of the battery, the present application provides a charging method for a vehicle battery. In this method, when it is detected that the vehicle is in an engine shutdown condition, the actual voltage of the vehicle battery can be collected, and the minimum voltage threshold of the vehicle battery can be determined according to the ambient temperature of the environment where the vehicle is located. When the actual voltage is lower than the minimum voltage threshold, the power battery of the vehicle is controlled to charge the vehicle battery, so that the voltage state of the battery can be detected in real time, effectively improving the real-time performance of the detection, reducing the risk of battery discharge, and improving the service life of the battery. Thus, the problem in the related art that only the voltage state of the battery can be detected within a specified time, the voltage state of the battery cannot be detected in real time, which reduces the real-time performance of the detection, and the voltage of the battery cannot be detected from multiple aspects, increasing the risk of battery discharge and reducing the service life of the battery is solved.

[0030] Specifically, Figure 1 is a schematic flowchart of a charging method for a vehicle battery provided by an embodiment of the present application.

[0031] As Figure 1 shown, the charging method for the vehicle battery includes the following steps:

[0032] In step S101, it is detected whether the vehicle is in an engine shutdown condition.

[0033] It can be understood that the embodiment of the present application can detect whether the vehicle is in an engine shutdown condition. Among them, when the vehicle is in an engine stop condition, the vehicle battery supplies power to the vehicle's low-voltage devices. For example, the battery in the embodiment of the present application can be a lead-acid battery, and the parking air conditioner uses the lead-acid battery for power supply, etc., which easily reduces the service life of the battery. Therefore, the embodiment of the present application can replenish the power when the battery voltage is insufficient, reducing the risk of battery discharge.

[0034] For example, as Figure 2 shown, the battery in the embodiment of the present application can be a lead-acid battery. When the depth of discharge of the lead-acid battery is 10% - 25%, it is shallow cycle discharge; when the depth of discharge is 30% - 50%, it is medium cycle discharge; when the depth of discharge is 60% - 80%, it is deep cycle discharge. The depth of discharge will cause the battery to discharge, which has a great impact on the cycle life of the battery.

[0035] In step S102, when it is detected that the vehicle is in the engine shutdown condition, the actual voltage of the vehicle battery is collected, and the minimum voltage threshold of the vehicle battery is determined according to the ambient temperature of the environment where the vehicle is located.

[0036] It can be understood that in the embodiment of the present application, when it is detected that the vehicle is in the engine shutdown condition, the actual voltage of the vehicle battery can be collected. For example, as Figure 3 shown, in the embodiment of the present application, the battery voltage can be detected by the VCU (Vehicle Control Unit), and when the actual voltage of the battery is lower than the minimum voltage threshold V α at which the battery starts to charge, the DCDC is turned on to charge the battery with the power battery. Among them, for a 24V battery system, the minimum voltage threshold V α for the battery to start charging has a default value of 24.5V.

[0037] Furthermore, in the embodiment of the present application, the minimum voltage threshold of the vehicle battery can be determined according to the ambient temperature of the environment where the vehicle is located. For example, since the discharge characteristics of the battery are greatly affected by the ambient temperature, when the ambient temperature is lower, the discharge capacity is smaller. Therefore, it is necessary to increase the minimum threshold to turn on the DCDC in advance. First, the minimum voltage threshold V αT at different ambient temperatures is determined, and the minimum voltage threshold V αT corresponding to different ambient temperatures is obtained by looking up a table, where the ambient temperature T 1 , T 2 , T 3 … T n corresponds to the minimum threshold of V 1 , V 2 , V 3 … V n . If the ambient temperature is between T n and T n+1 , a linear interpolation is taken, that is:

[0038]

[0039] Thus, in the embodiment of the present application, according to the minimum voltage threshold corresponding to different ambient temperatures, the accuracy of the battery voltage detection is improved, and the battery can be charged in time when the battery voltage is insufficient, reducing the risk of battery discharge.

[0040] Optionally, in an embodiment of the present application, after determining the minimum voltage threshold of the vehicle battery, it further includes: collecting the supply load current of the vehicle battery; when the supply load current is greater than the preset load current, optimizing the minimum voltage threshold according to the supply load current.

[0041] For example, as Figure 3As shown, in the embodiment of the present application, when the State of Charge (SOC) of the power battery ≥ a certain threshold D 1 and the supply load current of the storage battery ≤ the load current I α at this time, the endurance time of the power battery is greater than that of the storage battery. The power of the power battery is preferentially used without considering the voltage value of the storage battery, and the DCDC is directly controlled to turn on, thereby reducing the risk of the storage battery being discharged.

[0042] Next, when the State of Charge (SOC) of the power battery < a certain threshold D 1 and the supply load current of the storage battery ≤ the load current I α at this time, the minimum threshold V for controlling the DCDC to turn on α = V αT When the State of Charge (SOC) of the power battery < a certain threshold D 1 and when the supply load current of the storage battery > the load current I α at this time, the minimum threshold V for controlling the DCDC to turn on α , that is:

[0043] V α = V αT + ΔV

[0044] wherein, V α is the minimum voltage threshold for the storage battery to start charging, V αT is the minimum voltage threshold corresponding to different ambient temperatures, and ΔV is the increment value of the minimum voltage threshold.

[0045] In addition, increasing ΔV can optimize the minimum voltage threshold to prevent the storage battery from being deeply discharged under large current conditions. Among them, ΔV > 0, which is proportional to the power of the supply load, thus effectively improving the accuracy of detecting the voltage state of the storage battery and extending the service life of the storage battery.

[0046] It should be noted that the preset load current is set by those skilled in the art according to the actual situation and is not specifically limited herein.

[0047] Optionally, in an embodiment of the present application, after controlling the power battery of the vehicle to charge the vehicle storage battery, it further includes: judging whether the actual voltage is higher than the preset full charge threshold; if it is higher than the preset full charge threshold, stop charging the vehicle storage battery.

[0048] For example, as Figure 4 shown, the embodiment of the present application can judge whether the actual voltage of the storage battery is higher than the full charge threshold V β . When the voltage of the storage battery is higher than the full charge threshold V β , turn off the DCDC and stop charging the storage battery, effectively improving the intelligent level of the vehicle.

[0049] It should be noted that the preset full charge threshold is set by those skilled in the art according to the actual situation and will not be specifically limited herein.

[0050] Optionally, in an embodiment of the present application, after controlling the power battery of the vehicle to charge the vehicle battery, it further includes: collecting the discharge threshold of the power battery; judging whether the discharge threshold is less than the preset minimum discharge threshold; if the discharge threshold is less than the preset minimum discharge threshold and the duration is greater than the preset duration, starting the engine of the vehicle to charge the power battery and the vehicle battery together.

[0051] For example, as Figure 4 shown, when the power battery charges the battery, the embodiment of the present application can judge whether the SOC (State of Charge) of the power battery is less than the minimum discharge threshold. When the SOC of the power battery is less than the minimum discharge threshold and lasts for a certain time (such as 3s), start the engine to generate electricity to charge the power battery and the battery, effectively improving the accuracy of detection and reducing the risk of the battery being undercharged.

[0052] It should be noted that the preset minimum discharge threshold and the preset duration are set by those skilled in the art according to the actual situation and will not be specifically limited herein.

[0053] In step S103, judge whether the actual voltage is lower than the minimum voltage threshold. If the actual voltage is lower than the minimum voltage threshold, control the power battery of the vehicle to charge the vehicle battery.

[0054] It can be understood that the embodiment of the present application can judge whether the actual voltage of the battery is lower than the minimum voltage threshold. For example, the minimum voltage threshold can be determined according to different ambient temperature values, power supply load current, and SOC value of the power battery. If the actual voltage is lower than the minimum voltage threshold, control the power battery of the vehicle to charge the vehicle battery, thereby realizing dynamic adjustment of the on / off state of the DCDC, effectively improving the real-time performance of detection and prolonging the service life of the battery.

[0055] Optionally, in an embodiment of the present application, it further includes: receiving an opening instruction from the user; controlling the vehicle to start the engine according to the opening instruction.

[0056] For example, the embodiment of the present application can send an inquiry about whether to start the engine to the vehicle central control screen. The user can control the vehicle to start the engine through the "start" button. Then the engine can charge the power battery and the vehicle battery in time, effectively improving the interactivity of the vehicle.

[0057] For example, the construction vehicle in the embodiments of the present application uses a hybrid power system. The chassis provides power for the engine, and the power battery equipped on the upper-mounted device generally has a relatively small power, which is only used to provide energy for the upper-mounted device after the chassis engine stops. Among them, the chassis engine can be replaced by a range extender.

[0058] Specifically, as Figure 5 shown, the embodiments of the present application mainly include a storage battery, a power battery, a DCDC, a VCU, an engine, and a generator. Among them, the power battery is connected to the DCDC in high voltage, the VCU is connected to the DCDC in low voltage, the DCDC is connected to the storage battery in high voltage, the VCU controls the DCDC to turn on for charging the storage battery, the chassis generator is connected to the storage battery, and the generator can also charge the storage battery when the engine starts. The chassis generator is connected to the power battery in high voltage and can charge the power battery. The VCU is connected to the engine in low voltage and can control the engine to start. The VCU is connected to the power battery and the storage battery, and respectively obtains the SOC of the power battery and the voltage of the low-voltage storage battery, effectively reducing the risk of the storage battery being discharged.

[0059] According to the vehicle storage battery charging method proposed by the embodiments of the present application, when it is detected that the vehicle is in an engine shutdown condition, the actual voltage of the vehicle storage battery can be collected, and the minimum voltage threshold of the vehicle storage battery can be determined according to the ambient temperature of the vehicle environment. When the actual voltage is lower than the minimum voltage threshold, the power battery of the vehicle is controlled to charge the vehicle storage battery, so that the voltage state of the storage battery can be detected in real time, effectively improving the real-time performance of the detection, reducing the risk of the storage battery being discharged, and extending the service life of the storage battery. Thus, the problem in the related art that the voltage state of the storage battery can only be detected within a specified time, the voltage state of the storage battery cannot be detected in real time, reducing the real-time performance of the detection, and the voltage of the storage battery cannot be detected from multiple aspects, increasing the risk of the storage battery being discharged, and reducing the service life of the storage battery is solved.

[0060] Next, a vehicle storage battery charging device according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0061] Figure 6 is a block diagram of a vehicle storage battery charging device according to an embodiment of the present application.

[0062] As Figure 6 shown, the vehicle storage battery charging device 10 includes: a detection module 100, a processing module 200, and a control module 300.

[0063] Specifically, the detection module 100 is used to detect whether the vehicle is in an engine shutdown condition.

[0064] The processing module 200 is configured to collect the actual voltage of the vehicle battery when it is detected that the vehicle is in an engine shutdown condition, and determine the minimum voltage threshold of the vehicle battery according to the ambient temperature of the environment where the vehicle is located.

[0065] The control module 300 is configured to determine whether the actual voltage is lower than the minimum voltage threshold. If the actual voltage is lower than the minimum voltage threshold, the power battery of the vehicle is controlled to charge the vehicle battery.

[0066] Optionally, in an embodiment of the present application, the device 10 of the present application embodiment further includes: an acquisition module and an optimization module.

[0067] The acquisition module is configured to collect the supply load current of the vehicle battery after determining the minimum voltage threshold of the vehicle battery.

[0068] The optimization module is configured to optimize the minimum voltage threshold according to the supply load current when the supply load current is greater than a preset load current after determining the minimum voltage threshold of the vehicle battery.

[0069] Optionally, in an embodiment of the present application, the device 10 of the present application embodiment further includes: a judgment module and a processing module.

[0070] The judgment module is configured to determine whether the actual voltage is higher than a preset full charge threshold after controlling the power battery of the vehicle to charge the vehicle battery.

[0071] The processing module is configured to stop charging the vehicle battery if it is higher than the preset full charge threshold after controlling the power battery of the vehicle to charge the vehicle battery.

[0072] Optionally, in an embodiment of the present application, the device 10 of the present application embodiment further includes: an acquisition module, a judgment module and a processing module.

[0073] The acquisition module is configured to collect the discharge threshold of the power battery after controlling the power battery of the vehicle to charge the vehicle battery.

[0074] The judgment module is configured to determine whether the discharge threshold is less than a preset minimum discharge threshold after controlling the power battery of the vehicle to charge the vehicle battery.

[0075] The processing module is configured to start the engine of the vehicle to charge the power battery and the vehicle battery together if the discharge threshold is less than the preset minimum discharge threshold and the duration is greater than a preset duration after controlling the power battery of the vehicle to charge the vehicle battery.

[0076] Optionally, in an embodiment of the present application, the device 10 of the present application embodiment further includes: a receiving module and a control module.

[0077] Among them, a receiving module is configured to receive an enabling instruction from a user.

[0078] A control module is configured to control the vehicle to start the engine according to the enabling instruction.

[0079] It should be noted that the foregoing explanation of the embodiments of the method for charging a vehicle battery also applies to the charging device for the vehicle battery in this embodiment, and will not be elaborated here.

[0080] According to the charging device for a vehicle battery provided by an embodiment of the present application, when it is detected that the vehicle is in an engine-off working condition, the actual voltage of the vehicle battery can be collected, and the minimum voltage threshold of the vehicle battery can be determined according to the ambient temperature of the environment where the vehicle is located. When the actual voltage is lower than the minimum voltage threshold, the power battery of the vehicle is controlled to charge the vehicle battery, so that the voltage state of the battery can be detected in real time, effectively improving the real-time performance of the detection, reducing the risk of battery discharge, and prolonging the service life of the battery. Thus, the problem in the related art that the voltage state of the battery can only be detected within a specified time, the voltage state of the battery cannot be detected in real time, the real-time performance of the detection is reduced, and the voltage of the battery cannot be detected from multiple aspects, increasing the risk of battery discharge and reducing the service life of the battery is solved.

[0081] Figure 7 The structural schematic diagram of the vehicle provided by the embodiment of the present application. The vehicle may include:

[0082] A memory 701, a processor 702, and a computer program stored on the memory 701 and executable on the processor 702.

[0083] When the processor 702 executes the program, the method for charging a vehicle battery provided in the above embodiment is implemented.

[0084] Further, the vehicle further includes:

[0085] A communication interface 703 for communication between the memory 701 and the processor 702.

[0086] The memory 701 is used for storing a computer program executable on the processor 702.

[0087] The memory 701 may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory.

[0088] If the memory 701, the processor 702, and the communication interface 703 are implemented independently, the communication interface 703, the memory 701, and the processor 702 can be interconnected through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of simplicity of representation, Figure 7 only a thick line is used to represent it in Figure 7 , but it does not mean that there is only one bus or one type of bus.

[0089] Optionally, in a specific implementation, if the memory 701, the processor 702, and the communication interface 703 are integrated on a single chip, the memory 701, the processor 702, and the communication interface 703 can communicate with each other through an internal interface.

[0090] The processor 702 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0091] This embodiment also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the charging method of the vehicle battery as described above is implemented.

[0092] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0093] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0094] Any process or method description represented in a flowchart or described otherwise herein can be understood to represent a module, segment, or portion of code including one or N executable instructions for implementing a customized logical function or process. The scope of the preferred embodiments of this application includes additional implementations, where the functions may be executed in a substantially simultaneous manner or in the reverse order according to the functions involved, rather than in the order shown or discussed, which should be understood by those skilled in the technical field to which the embodiments of this application pertain.

[0095] The logic and / or steps represented in a flowchart or described otherwise herein, for example, can be considered a sequenced list of executable instructions for implementing a logical function, which can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in conjunction with such instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion with one or N wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically by optically scanning the paper or other media, followed by editing, interpretation, or other appropriate processing as necessary, and then stored in a computer memory.

[0096] It should be understood that various parts of the present application can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits with logic gate circuits for implementing logical functions on data signals, application specific integrated circuits with appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0097] Those of ordinary skill in the art can understand that all or part of the steps carried by the method of the above embodiments can be completed by instructing relevant hardware through a program. The said program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0098] In addition, in each embodiment of the present application, the functional units can be integrated into a processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. When the above integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0099] The above-mentioned storage medium can be a read-only memory, a magnetic disk, an optical disc, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A method for charging a vehicle battery, characterized in that: The following steps are involved: Detect whether the vehicle is in the engine shutdown condition; When it is detected that the vehicle is in the engine shutdown condition, collecting the actual voltage of the vehicle battery, and determining the minimum voltage threshold of the vehicle battery according to the ambient temperature of the environment in which the vehicle is located; as well as It is determined whether the actual voltage is lower than the minimum voltage threshold, wherein if the actual voltage is lower than the minimum voltage threshold, the power battery of the vehicle is controlled to charge the vehicle storage battery.

2. The method according to claim 1, characterized in that: After determining the minimum voltage threshold of the vehicle battery, the method further includes: collecting the power supply load current of the vehicle battery; When the power supply load current is greater than a preset load current, the minimum voltage threshold is optimized according to the power supply load current.

3. The method according to claim 1, characterized in that After controlling the power battery of the vehicle to charge the vehicle storage battery, the method further includes: Determining whether the actual voltage is higher than a preset full-charge threshold; If the charge level is higher than the preset full charge threshold, charging of the vehicle battery is stopped.

4. The method according to claim 1, characterized in that After controlling the power battery of the vehicle to charge the vehicle storage battery, the method further includes: collecting a discharge threshold of the power battery; Determining whether the discharge threshold is less than a preset minimum discharge threshold; If the discharge threshold is less than the preset minimum discharge threshold and the duration is greater than the preset duration, the engine of the vehicle is started to charge the power battery and the vehicle battery together.

5. The method according to claim 1, characterized in that Also includes: Receive the user's opening instruction; According to the start instruction, the vehicle is controlled to start the engine.

6. A charging device for a vehicle battery, characterized in that: include: A detection module, used to detect whether the vehicle is in an engine shutdown condition; a processing module, for collecting an actual voltage of a vehicle battery when detecting that the vehicle is in the engine shutdown condition, and determining a minimum voltage threshold of the vehicle battery according to an ambient temperature of an environment in which the vehicle is located; as well as A control module is used to determine whether the actual voltage is lower than the minimum voltage threshold, wherein if the actual voltage is lower than the minimum voltage threshold, the power battery of the vehicle is controlled to charge the vehicle battery.

7. The device according to claim 6, characterized in that Also includes: A collection module, used for collecting the power supply load current of the vehicle battery after determining the minimum voltage threshold of the vehicle battery; The optimization module is used to optimize the minimum voltage threshold according to the power supply load current after determining the minimum voltage threshold of the vehicle battery when the power supply load current is greater than a preset load current.

8. The device according to claim 6, characterized in that Also includes: A judgment module, used for judging whether the actual voltage is higher than a preset full-charge threshold after controlling the power battery of the vehicle to charge the vehicle storage battery; A processing module is used to stop charging the vehicle battery if the power battery of the vehicle is higher than the preset full-charge threshold after controlling the power battery of the vehicle to charge the vehicle battery.

9. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle battery charging method according to any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the vehicle battery charging method according to any one of claims 1 to 5.

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