Automatic charging method and device for storage battery, electronic equipment and storage medium

Abstract

The embodiment of the invention provides a storage battery automatic charging method and device, electronic equipment and a storage medium, and relates to the technical field of storage battery charging. The method comprises the following steps: receiving a charging request sent by a gateway module; judging whether the high-voltage system has a charging condition or not; if yes, generating a charging strategy based on the temperature of the storage battery and the subsequent weather temperature of the location of the vehicle; and performing power compensation based on the power compensation strategy, judging whether a power compensation quitting condition is met or not in a power compensation execution process, and quitting power compensation if any power compensation quitting condition is met. According to the method, the charging strategy is determined based on the storage battery temperature and the subsequent weather temperature, the charging efficiency is improved, and the problem of low charging efficiency of an existing method is solved.

Description

Technical Field

[0001] The present application relates to the technical field of battery charging, and in particular to a method, device, electronic device and storage medium for automatic battery charging. Background Art

[0002] Before new energy vehicles are powered by high voltage, all low-voltage electrical functions on the vehicle need to be powered directly by batteries. With the gradual increase in the development of low-voltage electrical appliances, the load demand on batteries by the vehicle has also increased, so batteries need to be recharged. In the existing recharge methods, the recharge target SOC and recharge voltage are fixed values, resulting in low recharge efficiency. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a method, device, electronic device and storage medium for automatic battery charging, determine the charging strategy based on the battery temperature and subsequent weather temperature, improve the charging efficiency, and solve the problem of low charging efficiency of existing methods.

[0004] The present application provides a method for automatically replenishing a battery, which is applied to a vehicle controller. The method includes:

[0005] Receive the power replenishment request sent by the gateway module;

[0006] Determine whether the high voltage system is ready for power replenishment;

[0007] If the conditions for charging are met, a charging strategy is generated based on the battery temperature and the subsequent weather temperature at the vehicle's location;

[0008] The power replenishment is performed based on the power replenishment strategy, and during the power replenishment execution process, it is determined whether a power replenishment exit condition is met, and if any power replenishment exit condition is met, the power replenishment is exited.

[0009] In the above implementation process, the charging strategy is determined based on the battery temperature and the subsequent weather temperature to improve the charging efficiency and solve the problem of low charging efficiency in the existing method.

[0010] Furthermore, the step of determining whether the high voltage system has the power supply condition includes:

[0011] If the power battery SOC is not less than the preset value, and the maximum discharge capacity of the power battery is not less than the set threshold, the charging conditions are met.

[0012] In the above implementation process, if the power battery SOC is sufficient and the discharge capacity is strong, the charging conditions are met and the battery can be recharged.

[0013] Furthermore, the generating of the charging strategy based on the battery temperature and the subsequent weather temperature at the location of the vehicle includes:

[0014] Determine the charging voltage according to the current temperature of the battery;

[0015] Determine the target SOC for charging based on the current battery temperature and the weather temperature of the vehicle's location over a period of time;

[0016] Preset the maximum time for recharging.

[0017] In the above implementation process, the charging voltage is related to the battery temperature. When the battery temperature is high, the charging voltage is reduced to avoid damage to the battery. When the battery temperature is low, the charging voltage is increased to improve the energy conversion rate. When the battery temperature is low or the weather temperature in the vehicle's location in the next few days is low, the charging target SOC is increased to ensure sufficient subsequent power, which can solve the problem of low charging efficiency of the battery under low temperature conditions.

[0018] Furthermore, the determining whether the condition for exiting the power replenishment is met includes:

[0019] If any of the conditions are met:

[0020] The power battery SOC is less than the preset value.

[0021] The maximum discharge capacity of the power battery is less than the set threshold.

[0022] The battery SOC is not less than the target SOC for charging.

[0023] If the total duration of the power replenishment is not less than the maximum duration, the conditions for exiting the power replenishment are met.

[0024] In the above implementation process, whether to exit the charging condition is determined according to the state of the power battery or the state of the storage battery or the charging time.

[0025] The present application also provides a battery automatic charging device, the device comprising:

[0026] A request receiving module, used for receiving a power replenishment request sent by the gateway module;

[0027] A condition judgment module is used to judge whether the high voltage system has the conditions for power replenishment;

[0028] A charging strategy generation module, for generating a charging strategy based on the battery temperature and the subsequent weather temperature at the location of the vehicle if the charging conditions are met;

[0029] The power replenishment module is used to perform power replenishment based on the power replenishment strategy, and during the power replenishment execution process, determine whether a power replenishment exit condition is met, and exit the power replenishment if any power replenishment exit condition is met.

[0030] In the above implementation process, the charging strategy is determined based on the battery temperature and the subsequent weather temperature to improve the charging efficiency and solve the problem of low charging efficiency in the existing method.

[0031] Furthermore, the condition judgment module includes:

[0032] The threshold judgment module is used to satisfy the charging condition if the power battery SOC is not less than a preset value and the maximum discharge capacity of the power battery is not less than a set threshold.

[0033] In the above implementation process, if the power battery SOC is sufficient and the discharge capacity is strong, the charging conditions are met and the battery can be recharged.

[0034] Furthermore, the power replenishment strategy generation module includes:

[0035] A charging voltage determination module is used to determine the charging voltage according to the current temperature of the battery;

[0036] A charging target SOC determination module is used to determine the charging target SOC according to the current temperature of the battery and the weather temperature of the vehicle location for a period of time;

[0037] The charging time determination module is used to pre-set the maximum charging time.

[0038] In the above implementation process, the charging voltage is related to the battery temperature. When the battery temperature is high, the charging voltage is reduced to avoid damage to the battery. When the battery temperature is low, the charging voltage is increased to improve the energy conversion rate. When the battery temperature is low or the weather temperature in the vehicle's location in the next few days is low, the charging target SOC is increased to ensure sufficient subsequent power, which can solve the problem of low charging efficiency of the battery under low temperature conditions.

[0039] Furthermore, the power replenishment module includes a power replenishment exit judgment module, which is used to:

[0040] If any of the conditions are met:

[0041] The power battery SOC is less than the preset value.

[0042] The maximum discharge capacity of the power battery is less than the set threshold.

[0043] The battery SOC is not less than the target SOC for charging.

[0044] If the total duration of the power replenishment is not less than the maximum duration, the conditions for exiting the power replenishment are met.

[0045] In the above implementation process, whether to exit the charging condition is determined according to the state of the power battery or the state of the storage battery or the charging time.

[0046] An embodiment of the present application also provides an electronic device, which includes a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the above-mentioned battery automatic charging method.

[0047] An embodiment of the present application further provides a readable storage medium, in which computer program instructions are stored. When the computer program instructions are read and executed by a processor, the above-mentioned automatic battery charging method is executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 A flow chart of a method for automatically charging a battery provided in an embodiment of the present application;

[0050] Figure 2 An automatic power replenishment architecture diagram provided in an embodiment of the present application;

[0051] Figure 3 A specific automatic power replenishment flow chart provided for an embodiment of the present application;

[0052] Figure 4 A flow chart for formulating a power replenishment strategy provided in an embodiment of the present application;

[0053] Figure 5 A structural block diagram of a battery automatic charging device provided in an embodiment of the present application;

[0054] Figure 6 A structural block diagram of another battery automatic charging device provided in an embodiment of the present application.

[0055] icon:

[0056] 100-request receiving module; 200-condition judgment module; 201-threshold judgment module; 300-power replenishment strategy generation module; 301-power replenishment voltage determination module; 302-power replenishment target SOC determination module; 303-power replenishment duration determination module; 400-power replenishment module; 401-exit power replenishment judgment module. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0058] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0059] Please see Figure 1 , Figure 1 A flowchart of a battery automatic charging method provided in an embodiment of the present application, which can be applied to a vehicle controller, specifically includes the following steps:

[0060] Step S100: receiving a power replenishment request sent by a gateway module;

[0061] Step S200: determining whether the high voltage system has the conditions for power replenishment;

[0062] Step S300: If the charging condition is met, a charging strategy is generated based on the battery temperature and the subsequent weather temperature at the location of the vehicle;

[0063] Step S400: performing power replenishment based on the power replenishment strategy, and during the power replenishment execution process, determining whether a power replenishment exit condition is met, and if any power replenishment exit condition is met, exiting the power replenishment.

[0064] The charging strategy is determined based on the battery temperature and subsequent weather temperature. When the battery temperature is low, the amount of electricity charged when reaching the fixed target charging SOC is smaller than when it is high. When the subsequent weather temperature drops sharply, the battery is also charged in a low temperature state. Charging based on the battery temperature and the subsequent weather temperature of the vehicle's location can improve the charging efficiency and solve the problem of low charging efficiency of existing methods.

[0065] like Figure 2 The figure shows the automatic charging architecture diagram. When the vehicle is in sleep mode, the EBS (Electronic Battery Sensor) periodically and automatically detects the battery status, including the battery SOC and temperature. When the battery SOC (State of Charge) is low, the EBS wakes up the gateway GWM (Gateway Module) and sends a charging request. The GWM wakes up the master node and initiates a charging request to the VCU (Vehicle Control Unit). The VCU arbitrates the charging request, formulates the charging strategy, and enables related components to perform charging.

[0066] like Figure 3 The following is a specific automatic power replenishment flow chart. The specific automatic power replenishment process is as follows:

[0067] EBS periodically checks the battery, including the current battery capacity, voltage and temperature. When the battery SOC is low, the recharging demand is sent to GWM through LIN communication; GWM wakes up the master node and initiates a recharging request; VCU determines whether the high-voltage system has the recharging conditions. The specific recharging conditions include:

[0068] If the power battery SOC is not less than the preset value, and the maximum discharge capacity of the power battery is not less than the set threshold, the charging conditions are met.

[0069] When the SOC of the power battery ≥ Q1 (preset value) and the maximum discharge capacity of the power battery ≥ P1 (preset value), enter the power replenishment; otherwise exit the power replenishment.

[0070] like Figure 4 As shown in FIG. 1 , it is a flow chart for formulating a power replenishment strategy. The specific power replenishment strategy of step S300 includes:

[0071] Step S301: determining the charging voltage according to the current temperature of the battery;

[0072] Step S302: Determine the target SOC for charging according to the current temperature of the battery and the weather temperature of the vehicle's location over a period of time;

[0073] Step S303: pre-set the maximum time required for charging.

[0074] For example, the charging voltage V1 is determined by looking up a table based on the battery temperature sent by the EBS;

[0075] Determine the target SOC for charging based on the battery temperature and the weather temperature of the vehicle's location for the next three days sent by T-BOX;

[0076] The longest charging time Ti is preset in the program.

[0077] If the target SOC and voltage of the recharge are fixed, when the battery temperature is low, the amount of electricity charged to reach the fixed target SOC is smaller than when it is high, resulting in an increase in the number of recharge requests initiated by the GWM in the same period of time. At the same time, considering the periodicity of EBS detecting the battery SOC, it is possible that the battery has been fed when the EBS wakes up next time.

[0078] If the temperature in the vehicle's location drops sharply in the next three days, the battery will be recharged in the low temperature state. When recharging, the target SOC needs to be increased to ensure sufficient power in the future and solve the problem of low charging efficiency of the battery in the low temperature state.

[0079] The charging voltage is related to the battery temperature. Therefore, when the battery temperature is high, the charging voltage can be reduced to avoid damage to the battery. When the battery temperature is low, the charging voltage can be increased to improve the energy conversion rate. For example, the VCU can determine the charging voltage according to the current battery temperature by looking up a table, and this table can be set in the program.

[0080] The target SOC for charging (the critical value of the battery SOC for exiting charging) is related to the current temperature of the battery and the weather temperature of the vehicle's location for a period of time in the next three days, such as 3 days. If the battery temperature is low or the weather temperature of the vehicle's location for the next three days is low, the target SOC for charging is increased to ensure sufficient power in the future and solve the problem of low charging efficiency of the battery under low temperature conditions. For example, the VCU can determine the target SOC for charging by looking up a table, which is set in the program.

[0081] Execute power replenishment: VCU enables high voltage on the entire vehicle; VCU enables DCDC operation; at the same time, VCU starts power replenishment timing.

[0082] In step S400, determining whether the conditions for exiting the power replenishment are met includes:

[0083] If any of the conditions are met:

[0084] The power battery SOC is less than the preset value.

[0085] The maximum discharge capacity of the power battery is less than the set threshold.

[0086] The battery SOC is not less than the target SOC for charging.

[0087] If the total duration of the power replenishment is not less than the maximum duration, the conditions for exiting the power replenishment are met.

[0088] Specifically, the VCU determines whether to exit the power replenishment. During the power replenishment execution, if one of the following conditions is met, the power replenishment is exited:

[0089] Power battery SOC <Q1;

[0090] Maximum discharge capacity of power battery <P1;

[0091] Battery SOC ≥ charging target SOC;

[0092] The total duration of charging is ≥ Ti; otherwise, charging continues.

[0093] After exiting the power replenishment, the VCU enables DCDC to stop, and the VCU stops the power replenishment timing; the VCU enables the whole vehicle to lower the high voltage; and the whole vehicle goes into sleep mode.

[0094] The present application also provides a battery automatic charging device, which is applied to the battery automatic charging method in the above embodiment. Figure 5The figure is a structural block diagram of a battery automatic charging device, which includes but is not limited to:

[0095] The request receiving module 100 is used to receive the power replenishment request sent by the gateway module;

[0096] The condition judgment module 200 is used to judge whether the high voltage system has the conditions for power replenishment;

[0097] A power replenishment strategy generation module 300 is used to generate a power replenishment strategy based on the battery temperature and the subsequent weather temperature at the location of the vehicle if the power replenishment conditions are met;

[0098] The power replenishment module 400 is used to perform power replenishment based on the power replenishment strategy, and during the power replenishment execution process, determine whether a power replenishment exit condition is met, and exit the power replenishment if any power replenishment exit condition is met.

[0099] like Figure 6 FIG. 2 is a structural block diagram of another automatic battery charging device. Based on the above embodiment, the condition judgment module 200 includes:

[0100] The threshold judgment module 201 is used to determine that the charging condition is met if the SOC of the power battery is not less than a preset value and the maximum discharge capacity of the power battery is not less than a set threshold.

[0101] The power replenishment strategy generation module 300 includes:

[0102] A charging voltage determination module 301 is used to determine the charging voltage according to the current temperature of the battery;

[0103] A charging target SOC determination module 302 is used to determine the charging target SOC according to the current temperature of the battery and the weather temperature of the vehicle location within a subsequent period of time;

[0104] The charging time determination module 303 is used to preset the maximum charging time.

[0105] The power replenishment module 400 includes a power replenishment exit determination module 401, which is used to:

[0106] If any of the conditions are met:

[0107] The power battery SOC is less than the preset value.

[0108] The maximum discharge capacity of the power battery is less than the set threshold.

[0109] The battery SOC is not less than the target SOC for charging.

[0110] If the total duration of the power replenishment is not less than the maximum duration, the conditions for exiting the power replenishment are met.

[0111] An embodiment of the present application also provides an electronic device, which includes a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the above-mentioned battery automatic charging method.

[0112] An embodiment of the present application further provides a readable storage medium, in which computer program instructions are stored. When the computer program instructions are read and executed by a processor, the above-mentioned automatic battery charging method is executed.

[0113] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0114] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0115] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0116] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0117] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0118] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A method for automatically replenishing a battery, characterized in that: Applied to a vehicle controller, the method comprises: Receive the power replenishment request sent by the gateway module; Determine whether the high voltage system is ready for power replenishment; If the conditions for charging are met, a charging strategy is generated based on the battery temperature and the subsequent weather temperature at the vehicle's location; The power replenishment is performed based on the power replenishment strategy, and during the power replenishment execution process, it is determined whether a power replenishment exit condition is met, and if any power replenishment exit condition is met, the power replenishment is exited.

2. The automatic battery charging method according to claim 1, characterized in that: The determining whether the high voltage system has the power supply condition comprises: If the power battery SOC is not less than the preset value, and the maximum discharge capacity of the power battery is not less than the set threshold, the charging conditions are met.

3. The automatic battery charging method according to claim 1, characterized in that: The generating of the charging strategy based on the battery temperature and the subsequent weather temperature at the location of the vehicle includes: Determine the charging voltage according to the current temperature of the battery; Determine the target SOC for charging based on the current battery temperature and the weather temperature of the vehicle's location over a period of time; Preset the maximum time for recharging.

4. The automatic battery charging method according to claim 1, characterized in that: The determining whether the conditions for exiting the power replenishment are met includes: If any of the conditions are met: The power battery SOC is less than the preset value. The maximum discharge capacity of the power battery is less than the set threshold. The battery SOC is not less than the target SOC for charging. If the total duration of the power replenishment is not less than the maximum duration, the conditions for exiting the power replenishment are met.

5. A battery automatic charging device, characterized in that: The device comprises: A request receiving module, used for receiving a power replenishment request sent by the gateway module; A condition judgment module is used to judge whether the high voltage system has the conditions for power replenishment; A charging strategy generation module, for generating a charging strategy based on the battery temperature and the subsequent weather temperature at the location of the vehicle if the charging conditions are met; The power replenishment module is used to perform power replenishment based on the power replenishment strategy, and during the power replenishment execution process, determine whether a power replenishment exit condition is met, and exit the power replenishment if any power replenishment exit condition is met.

6. The automatic battery charging device according to claim 5, characterized in that: The condition judgment module includes: The threshold judgment module is used to satisfy the charging condition if the power battery SOC is not less than a preset value and the maximum discharge capacity of the power battery is not less than a set threshold.

7. The automatic battery charging device according to claim 5, characterized in that: The power replenishment strategy generation module includes: A charging voltage determination module is used to determine the charging voltage according to the current temperature of the battery; A charging target SOC determination module is used to determine the charging target SOC according to the current temperature of the battery and the weather temperature of the vehicle location for a period of time; The charging time determination module is used to pre-set the maximum charging time.

8. The automatic battery charging device according to claim 5, characterized in that: The power replenishment module includes a power replenishment exit judgment module, which is used to: If any of the conditions are met: The power battery SOC is less than the preset value. The maximum discharge capacity of the power battery is less than the set threshold. The battery SOC is not less than the target SOC for charging. If the total duration of the power replenishment is not less than the maximum duration, the conditions for exiting the power replenishment are met.

9. An electronic device, characterized in that: The electronic device comprises a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the automatic battery charging method according to any one of claims 1 to 4.

10. A readable storage medium, characterized in that: The readable storage medium stores computer program instructions, and when the computer program instructions are read and executed by a processor, the battery automatic charging method according to any one of claims 1 to 4 is executed.

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