CN116359755A - Method for correcting state of charge, electronic equipment and storage medium - Google Patents

Method for correcting state of charge, electronic equipment and storage medium Download PDF

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CN116359755A
CN116359755A CN202310358721.9A CN202310358721A CN116359755A CN 116359755 A CN116359755 A CN 116359755A CN 202310358721 A CN202310358721 A CN 202310358721A CN 116359755 A CN116359755 A CN 116359755A
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charge
state
battery
voltage
current
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胡耀华
吴东
陈熙
王雷
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Ecoflow Technology Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3842Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

本申请提供一种荷电状态的修正方法、电子设备及储存介质,属于新能源技术领域,荷电状态的修正方法包括:在电池处于放电状态下时,获取电池的放电电流;根据电池的放电电流和电流阈值,确定电池的参考电压,参考电压是电池的荷电状态下降至预设阈值时电池的放电电压;获取电池当前的电池电压和荷电状态;若电池电压小于参考电压,且荷电状态大于预设阈值,则根据预设阈值对荷电状态进行修正。本申请实施例在确定当前的电池电压小于参考电压,荷电状态大于预设阈值后,可以确定当前的电荷状态不匹配,最后根据预设阈值对荷电状态进行修正,以使当前的荷电状态与实际可使用的荷电状态相匹配。

Figure 202310358721

The application provides a method for correcting the state of charge, electronic equipment and storage media, which belong to the field of new energy technology. The method for correcting the state of charge includes: obtaining the discharge current of the battery when the battery is in the discharge state; Current and current threshold, determine the reference voltage of the battery, the reference voltage is the discharge voltage of the battery when the state of charge of the battery drops to the preset threshold; obtain the current battery voltage and state of charge of the battery; if the battery voltage is less than the reference voltage, and the charge If the state of charge is greater than the preset threshold, the state of charge is corrected according to the preset threshold. In the embodiment of the present application, after determining that the current battery voltage is lower than the reference voltage and the state of charge is greater than the preset threshold, it can be determined that the current state of charge does not match, and finally the state of charge is corrected according to the preset threshold so that the current state of charge The state matches the actual usable state of charge.

Figure 202310358721

Description

荷电状态的修正方法、电子设备及储存介质Method for correcting state of charge, electronic equipment and storage medium

技术领域technical field

本申请属于新能源技术领域,尤其涉及一种荷电状态的修正方法、电子设备及储存介质。The application belongs to the field of new energy technologies, and in particular relates to a method for correcting the state of charge, electronic equipment and a storage medium.

背景技术Background technique

带电池的电子设备在放电时,电子设备上会显示当前的荷电状态和电量的剩余使用时间。When an electronic device with a battery is being discharged, the current state of charge and the remaining usage time of the battery will be displayed on the electronic device.

然而,在相关技术中,电子设备上显示的荷电状态和电量的剩余使用时间并不准确,导致用户无法根据显示的荷电状态和电量的剩余使用时间来规划使用电子设备,体验较差。However, in related technologies, the state of charge and the remaining usage time of the power displayed on the electronic device are inaccurate, so that the user cannot plan to use the electronic device according to the displayed state of charge and the remaining usage time of the power, resulting in a poor experience.

发明内容Contents of the invention

鉴于此,本申请提供一种荷电状态的修正方法、电子设备及储存介质,能够使电子设备上当前的荷电状态与实际可使用的荷电状态匹配,其中,当前的荷电状态可以映射得到准确的剩余使用时间,使用户可以规划使用电子设备。In view of this, the present application provides a method for correcting the state of charge, an electronic device, and a storage medium, which can match the current state of charge on the electronic device with the actually usable state of charge, wherein the current state of charge can be mapped Accurate remaining usage time is obtained, so that users can plan to use electronic devices.

本申请第一方面提供一种荷电状态的修正方法,荷电状态的修正方法包括:The first aspect of the present application provides a method for correcting the state of charge. The method for correcting the state of charge includes:

在电池处于放电状态下时,获取所述电池的放电电流;Obtain the discharge current of the battery when the battery is in a discharge state;

根据所述电池的放电电流和电流阈值,确定所述电池的参考电压,所述参考电压是所述电池的荷电状态下降至预设阈值时所述电池的放电电压;determining a reference voltage of the battery according to the discharge current and the current threshold of the battery, where the reference voltage is the discharge voltage of the battery when the state of charge of the battery drops to a preset threshold;

获取所述电池当前的电池电压和荷电状态;Obtain the current battery voltage and state of charge of the battery;

若所述电池电压小于所述参考电压,且所述荷电状态大于所述预设阈值,则根据所述预设阈值对所述荷电状态进行修正。If the battery voltage is less than the reference voltage and the state of charge is greater than the preset threshold, the state of charge is corrected according to the preset threshold.

如此,电池处于放电状态下时,获取电池的放电电流,根据电池的放电电流和电流阈值可以确定电池的荷电状态下降至预设阈值时电池的放电电压,也即确定参考电压,进而根据参考电压可以实现提前修正荷电状态或不提前修正荷电状态。在确定电池的参考电压后,再接着获取电池当前的电池电压和荷电状态,若确定当前的电池电压小于参考电压,说明当前电池电压较低,可能出现当前的荷电状态与可实际使用的荷电状态不匹配的情况,再接着确定荷电状态大于预设阈值后,可以确定当前的荷电状态与可实际使用的荷电状态不匹配,最后根据预设阈值对荷电状态进行修正,以使当前的荷电状态与实际可使用的荷电状态相匹配,显示的剩余使用时间准确。In this way, when the battery is in the discharge state, the discharge current of the battery is obtained, and the discharge voltage of the battery when the state of charge of the battery drops to a preset threshold can be determined according to the discharge current of the battery and the current threshold, that is, the reference voltage is determined, and then according to the reference The voltage can realize the state of charge correction in advance or not correct the state of charge in advance. After determining the reference voltage of the battery, then obtain the current battery voltage and state of charge of the battery. If it is determined that the current battery voltage is lower than the reference voltage, it means that the current battery voltage is low, and the current state of charge may be different from the actual state of charge. If the state of charge does not match, after determining that the state of charge is greater than the preset threshold, it can be determined that the current state of charge does not match the actual state of charge, and finally the state of charge is corrected according to the preset threshold. In order to match the current state of charge with the actual usable state of charge, the displayed remaining usage time is accurate.

第一方面的一些实施例,所述根据所述电池的放电电流和电流阈值,确定所述电池的参考电压,包括:In some embodiments of the first aspect, the determining the reference voltage of the battery according to the discharge current and the current threshold of the battery includes:

若所述放电电流小于所述电流阈值,则确定第一预设电压为参考电压。If the discharge current is smaller than the current threshold, the first preset voltage is determined as the reference voltage.

如此,在放电电流小于电流阈值的情况下,确定第一预设电压为参考电压,可以将当前的荷电状态修正到可实际使用的荷电状态。In this way, when the discharge current is less than the current threshold, the first preset voltage is determined as the reference voltage, and the current state of charge can be corrected to a practically usable state of charge.

第一方面的一些实施例,所述根据所述电池的放电电流和电流阈值,确定所述电池的参考电压,包括:In some embodiments of the first aspect, the determining the reference voltage of the battery according to the discharge current and the current threshold of the battery includes:

若所述放电电流大于所述电流阈值,则获取所述电池的最低电芯电压,所述最低电芯电压是所述电池中的所有电芯的电压中的最低值,根据所述最低电芯电压和所述放电电流确定所述参考电压,其中,所述参考电压大于所述第一预设电压。If the discharge current is greater than the current threshold, obtain the minimum cell voltage of the battery, the minimum cell voltage is the lowest value of all cell voltages in the battery, according to the minimum cell voltage The voltage and the discharge current determine the reference voltage, wherein the reference voltage is greater than the first preset voltage.

如此,在放电电流大于电流阈值的情况下,根据最低电芯电压和放电电流确定参考电压,参考电压可以根据最低电芯电压和放电电流的变化而动态变化,同时使参考电压大于第一预设电压,相比相关技术,可以提前修正荷电状态,修正时间更长,可以将当前的荷电状态修正到可实际使用的荷电状态。In this way, when the discharge current is greater than the current threshold, the reference voltage is determined according to the minimum cell voltage and discharge current, and the reference voltage can be dynamically changed according to changes in the minimum cell voltage and discharge current, while making the reference voltage greater than the first preset Voltage, compared with related technologies, can correct the state of charge in advance, the correction time is longer, and the current state of charge can be corrected to a state of charge that can be actually used.

第一方面的一些实施例,所述根据所述预设阈值对所述荷电状态进行修正,包括:In some embodiments of the first aspect, the modifying the state of charge according to the preset threshold includes:

计算所述荷电状态与所述预设阈值之间的差值,calculating a difference between the state of charge and the preset threshold,

根据所述差值修正所述荷电状态。The state of charge is corrected according to the difference.

如此,根据荷电状态与预设阈值求出差值,根据差值修正当前荷电状态,以在预设修正时间内,不同大小的当前荷电状态都能修正成可实际使用的荷电状态。In this way, the difference is calculated according to the state of charge and the preset threshold value, and the current state of charge is corrected according to the difference, so that within the preset correction time, the current state of charge of different sizes can be corrected into a practical state of charge .

第一方面的一些实施例,所述根据所述差值修正所述荷电状态,包括:In some embodiments of the first aspect, the modifying the state of charge according to the difference includes:

根据所述差值获取对应的修正倍率,其中,所述修正倍率随所述差值的增大而增大;Acquiring a corresponding correction magnification according to the difference, wherein the correction magnification increases as the difference increases;

根据所述修正倍率对所述荷电状态进行修正。The state of charge is corrected according to the correction magnification.

第一方面的一些实施例,所述根据所述修正倍率对所述荷电状态进行修正,包括:In some embodiments of the first aspect, the correcting the state of charge according to the correction factor includes:

根据所述放电电流计算所述电池的放电电量;calculating the discharge capacity of the battery according to the discharge current;

根据所述修正倍率对所述放电电量进行修正;Correcting the discharge electric quantity according to the correction factor;

根据修正后的放电电量、所述电池的满电电量、所述荷电状态计算得到修正后的荷电状态。The corrected state of charge is calculated according to the corrected discharge capacity, the fully charged capacity of the battery, and the state of charge.

第一方面的一些实施例,所述方法还包括:In some embodiments of the first aspect, the method further comprises:

若所述电池电压大于所述参考电压,则不对所述荷电状态进行修正;或者if the battery voltage is greater than the reference voltage, not correcting the state of charge; or

若所述电池电压小于所述参考电压,且所述荷电状态小于所述预设阈值,则不对所述荷电状态进行修正。If the battery voltage is less than the reference voltage and the state of charge is less than the preset threshold, the state of charge is not corrected.

如此,若当前电池电压大于参考电压,说明当前电池电压较高,出现显示的荷电状态与可实际使用的荷电状态不匹配的可能性较低,因此,可以不对当前的荷电状态进行修正。若当前电池电压小于参考电压,虽然说明当前电池电压较低,可能出现显示的荷电状态与可实际使用的荷电状态不匹配的情况,然而,当前的荷电状态小于预设阈值,说明此时的当前的荷电状态符合电池电压较低的情况,可以不对当前的荷电状态进行修正。In this way, if the current battery voltage is greater than the reference voltage, it means that the current battery voltage is relatively high, and the possibility of a mismatch between the displayed state of charge and the actual state of charge that can be used is low. Therefore, it is not necessary to correct the current state of charge . If the current battery voltage is lower than the reference voltage, although the current battery voltage is low, the displayed state of charge may not match the actual state of charge, however, the current state of charge is less than the preset threshold, indicating that this The current state of charge at the time corresponds to the situation that the battery voltage is low, and the current state of charge may not be corrected.

第一方面的一些实施例,所述根据所述最低电芯电压和所述放电电流确定所述参考电压,包括:In some embodiments of the first aspect, the determining the reference voltage according to the minimum cell voltage and the discharge current includes:

根据所述放电电流确定电压修正幅值;determining a voltage correction amplitude according to the discharge current;

根据所述最低电芯电压与所述电压修正值之和,得到所述参考电压。The reference voltage is obtained according to the sum of the minimum cell voltage and the voltage correction value.

如此,参考电压可以根据放电电流的变化,在最低电芯电压的基础上不断变化,参考电压从而得到动态调整。In this way, the reference voltage can be continuously changed on the basis of the lowest cell voltage according to the change of the discharge current, so that the reference voltage can be dynamically adjusted.

本申请第二方面提供一种电子设备,包括:The second aspect of the present application provides an electronic device, including:

电池;Battery;

处理器;以及processor; and

存储器,用于存储所述处理器的可执行指令;a memory for storing executable instructions of the processor;

其中,所述处理器执行所述可执行指令使得所述电子设备执行上所述的电池荷电状态的修正方法。Wherein, the processor executes the executable instruction so that the electronic device executes the method for correcting the state of charge of the battery described above.

如此,电子设备的电池处于放电状态下时,电子设备的处理器获取电池的放电电流,根据电池的放电电流和电流阈值可以确定电池的荷电状态下降至预设阈值时电池的放电电压,也即确定参考电压,进而根据参考电压可以实现提前修正荷电状态或不提前修正荷电状态。处理器在确定电池的参考电压后,再接着获取电池当前的电池电压和荷电状态,若确定当前的电池电压小于参考电压,说明当前电池电压较低,可能出现当前的荷电状态与可实际使用的荷电状态不匹配的情况,处理器再接着确定荷电状态大于预设阈值后,可以确定当前的荷电状态与可实际使用的荷电状态不匹配,最后,处理器根据预设阈值对荷电状态进行修正,以使当前的荷电状态与实际可使用的荷电状态相匹配,以使显示的剩余使用时间准确。通过本实施例,能够准确显示电池的剩余使用时间,满足用户的使用需求。In this way, when the battery of the electronic device is in the discharge state, the processor of the electronic device obtains the discharge current of the battery, and can determine the discharge voltage of the battery when the state of charge of the battery drops to a preset threshold according to the discharge current of the battery and the current threshold. That is, the reference voltage is determined, and then the state of charge can be corrected in advance or not corrected in advance according to the reference voltage. After the processor determines the reference voltage of the battery, it then obtains the current battery voltage and state of charge of the battery. If it is determined that the current battery voltage is lower than the reference voltage, it means that the current battery voltage is low, and the current state of charge may be different from the actual state of charge. If the used state of charge does not match, the processor can determine that the current state of charge does not match the actual state of charge after determining that the state of charge is greater than the preset threshold. The state of charge is corrected so that the current state of charge matches the actual usable state of charge so that the displayed remaining usage time is accurate. Through this embodiment, it is possible to accurately display the remaining usage time of the battery to meet the usage requirements of the user.

本申请第三方面提供一种存储介质,其上存储有计算机程序,所述计算机程序被处理器执行时实现上述的电池荷电状态的修正方法。A third aspect of the present application provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above method for correcting the state of charge of a battery is implemented.

本申请第三方面的效果与第二方面近似,在此不再赘述。The effect of the third aspect of the present application is similar to that of the second aspect, and will not be repeated here.

附图说明Description of drawings

图1为本申请一实施例提供的电子设备结构示意图;FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

图2为本申请一实施例提供的电池荷电状态的修正方法的应用场景图;FIG. 2 is an application scene diagram of a method for correcting the state of charge of a battery provided by an embodiment of the present application;

图3为本申请另一实施例提供的电池荷电状态的修正方法的应用场景图;FIG. 3 is an application scene diagram of a method for correcting the state of charge of a battery provided in another embodiment of the present application;

图4为本申请一实施例提供的电池荷电状态的修正方法的流程示意图;FIG. 4 is a schematic flowchart of a method for correcting the state of charge of a battery provided by an embodiment of the present application;

图5为本申请另一实施例提供的电池荷电状态的修正方法的流程示意图;FIG. 5 is a schematic flowchart of a method for correcting the state of charge of a battery provided in another embodiment of the present application;

图6为本申请又一实施例提供的电池荷电状态的修正方法的流程示意图;FIG. 6 is a schematic flowchart of a method for correcting the state of charge of a battery provided in another embodiment of the present application;

图7为本申请又一实施例提供的电池荷电状态的修正方法的流程示意图;FIG. 7 is a schematic flowchart of a method for correcting the state of charge of a battery provided in another embodiment of the present application;

图8为本申请再一实施例提供的电池荷电状态的修正方法的流程示意图;FIG. 8 is a schematic flowchart of a method for correcting the state of charge of a battery provided in yet another embodiment of the present application;

图9为本申请另一实施例提供的电池荷电状态的修正方法的流程示意图;FIG. 9 is a schematic flowchart of a method for correcting the state of charge of a battery provided in another embodiment of the present application;

图10为本申请又一实施例提供的电池荷电状态的修正方法的流程示意图;FIG. 10 is a schematic flowchart of a method for correcting the state of charge of a battery provided in another embodiment of the present application;

图11为本申请一实施例提供的电子设备结构示意图。FIG. 11 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

具体实施方式Detailed ways

本申请中所涉及的多个,是指两个或两个以上。另外,需要理解的是,在本申请的描述中,“第一”、“第二”等词汇,仅用于区分描述的目的,而不能理解为指示或暗示相对重要性,也不能理解为指示或暗示顺序。A plurality referred to in this application refers to two or more than two. In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or imply order.

在本申请实施例中,“示例性”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言,使用“示例性”或者“例如”等词旨在以具体方式呈现相关概念。In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

下面将结合附图对一些实施例做出说明。在不冲突的情况下,下述的实施例及实施例中的特征可以相互组合。另外,本技术领域的普通技术人员应当认识到,以上的实施例仅是用来说明本申请,而并非用作为对本申请的限定,只要在本申请的实质精神范围之内,对以上实施例所作的适当改变和变化都落在本申请公开的范围之内。Some embodiments will be described below with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other. In addition, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present application, rather than to limit the present application. Appropriate alterations and variations of these fall within the scope of the disclosure of this application.

下面先对相关技术的情况做简要说明:The following is a brief description of the related technologies:

储能设备、冰箱或空调等设置有电池的电子设备在放电时,因为放电电流的急剧变化,会存在电子设备上显示的荷电状态(State of Charge,SOC),以及荷电状态映射的剩余使用时间与实际剩余使用时间不匹配的问题。例如,电子设备的显示屏上显示的荷电状态为5%,剩余使用时间为2h,此时,用户继续使用该电子设备,用户使用了6分钟后,该电子设备突然断电关机,用户无法继续使用该电子设备,影响了用户体验。When electronic devices equipped with batteries, such as energy storage devices, refrigerators, or air conditioners, are being discharged, due to the sharp change in the discharge current, there will be a state of charge (State of Charge, SOC) displayed on the electronic device and a residual state of charge map. A problem where the usage time does not match the actual remaining usage time. For example, the state of charge displayed on the display screen of the electronic device is 5%, and the remaining use time is 2 hours. At this time, the user continues to use the electronic device. After the user uses it for 6 minutes, the electronic device suddenly loses power and shuts down. Continuing to use the electronic device affects user experience.

为了避免电子设备中电池各电芯在低于欠电压后还继续放电,影响电池的整体寿命,一般将电池中所有电芯的电压中的最低值,作为整个电池的电池电压。同时,为了使剩余使用时间与实际剩余使用时间匹配,当电池电压小于等于电池第一次放空时的电压,也即小于初始放空点电压时,则按照预设速度修正电子设备的荷电状态至预设值。也即是说,将初始放空点电压作为是否修正当前的正荷电状态的判断值,且修正速度是预设设定的,无法直接从一个荷电状态跳变到另一个荷电状态。例如,初始放空点的电压为3.2V,荷电状态的预设值为1%,电子设备检测到当前的电池电压小于等于3.2V,荷电状态显示7%时,则将7%按照预设速度修正到1%,不能直接从7%跳变到1%。In order to prevent the battery cells in the electronic equipment from continuing to discharge after being lower than the undervoltage and affecting the overall life of the battery, the lowest value of the voltages of all the cells in the battery is generally used as the battery voltage of the entire battery. At the same time, in order to match the remaining use time with the actual remaining use time, when the battery voltage is less than or equal to the voltage when the battery is first discharged, that is, less than the initial discharge point voltage, the charge state of the electronic device is corrected at a preset speed to default value. That is to say, the initial discharge point voltage is used as the judgment value of whether to correct the current positive state of charge, and the correction speed is preset, and it is impossible to directly jump from one state of charge to another state of charge. For example, the voltage at the initial emptying point is 3.2V, and the preset value of the state of charge is 1%. The speed is fixed to 1%, it cannot jump directly from 7% to 1%.

当电池的放电电流过大时,放电速度会加快,会导致电池电压到达欠压点的时间较短,若仍以初始放空点电压作为是否修正荷电状态的判断值,由于初始放空点电压和欠压点的电压值相近,且荷电状态的修正不能跳变。因此,会出现当前的电池电压接近欠压点电压,而荷电状态没有修正到预设值,导致显示的荷电状态和实际可使用的荷电状态差别较大,也即显示的剩余使用时间与实际的剩余使用时间不匹配,影响用户使用电子设备的体验。例如,欠压点为3.1V,电池突然为大功率负载供电,放电电流加大,电池电压到达欠电压的时间变短,如果仍以初始放空点电压3.2V开始修正,由于不能跳变,就会出现电池电压到达3.1V的欠压点时,修正后的荷电状态显示为5%,与实际可使用的荷电状态的1%不符,进而也没有时间可以将荷电状态修正到0%。When the discharge current of the battery is too large, the discharge speed will be accelerated, which will lead to a shorter time for the battery voltage to reach the undervoltage point. The voltage value of the undervoltage point is similar, and the correction of the state of charge cannot jump. Therefore, the current battery voltage is close to the undervoltage point voltage, but the state of charge has not been corrected to the preset value, resulting in a large difference between the displayed state of charge and the actual usable state of charge, that is, the displayed remaining usage time It does not match the actual remaining usage time, which affects the user's experience of using the electronic device. For example, if the undervoltage point is 3.1V, the battery suddenly supplies power to a high-power load, the discharge current increases, and the time for the battery voltage to reach the undervoltage becomes shorter. When the battery voltage reaches the undervoltage point of 3.1V, the corrected state of charge is displayed as 5%, which is inconsistent with the actual usable state of charge of 1%, and there is no time to correct the state of charge to 0%. .

鉴于此,本申请提供一种荷电状态的修正方法、电子设备及储存介质,能够使电子设备上显示的荷电状态与实际可使用的荷电状态匹配,其中,显示的荷电状态可以映射得到准确的剩余使用时间,使用户可以准确剩余使用时间规划使用该电子设备。In view of this, the present application provides a method for correcting the state of charge, an electronic device, and a storage medium, which can match the state of charge displayed on the electronic device with the actually usable state of charge, wherein the displayed state of charge can be mapped Accurate remaining usage time is obtained, so that the user can plan and use the electronic device with accurate remaining usage time.

请参阅图1,图1为本申请实施例的电子设备的结构示意图,电子设备100包括电池102和电池管理系统(Battery Management System,BMS)单元101,电池102用于为负载提供电量,电池管理系统单元101用于控制电池102向负载提供电量,其中,电池102向负载供电的状态为放电状态,电池102向负载供电时,电池102的输出电流为放电电流,放电电流产生的电压为放电电压。电子设备100包括储能设备,或者是空调、冰箱、电脑等具有电池102的设备。负载包括用电设备和电子设备100的功率器件。Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device 100 includes a battery 102 and a battery management system (Battery Management System, BMS) unit 101. The battery 102 is used to provide power for a load. The battery management The system unit 101 is used to control the battery 102 to provide power to the load, wherein the state of the battery 102 supplying power to the load is the discharge state, when the battery 102 supplies power to the load, the output current of the battery 102 is the discharge current, and the voltage generated by the discharge current is the discharge voltage . The electronic device 100 includes an energy storage device, or is an air conditioner, a refrigerator, a computer and other devices with a battery 102 . The load includes electric devices and power devices of the electronic device 100 .

图2为荷电状态的修正方法的一应用场景图,本申请的荷电状态的修正方法应用于储能设备。储能设备110与用电设备200电连接,用电设备200包括电磁炉、电灯、扫地机或者其他关于消耗电能进行工作的设备等。储能设备110与用电设备200电连接后,储能设备110的电池管理系统单元101控制电池102向用电设备200供电,此时,电池102处于放电状态,储能设备110的电池102向用电设备200输入放电电流,产生放电电压。储能设备110的电池管理系统单元101获取电池102的放电电流,接着,根据电池102的放电电流和电流阈值,确定电池102的荷电状态下降至预设阈值时的电池102的放电电压,也即确定电池102的参考电压。再接着,获取电池102当前的电池电压和荷电状态,如果判断出当前的电池电压小于参考电压,且荷电状态大于预设阈值,则根据预设阈值对荷电状态进行修正,储能设备110的显示的荷电状态为修正后的荷电状态。FIG. 2 is an application scene diagram of a method for correcting a state of charge, and the method for correcting a state of charge of the present application is applied to an energy storage device. The energy storage device 110 is electrically connected to the electric device 200, and the electric device 200 includes an induction cooker, an electric light, a sweeper or other devices that consume electric energy for work. After the energy storage device 110 is electrically connected to the electric device 200, the battery management system unit 101 of the energy storage device 110 controls the battery 102 to supply power to the electric device 200. The electric device 200 inputs a discharge current to generate a discharge voltage. The battery management system unit 101 of the energy storage device 110 obtains the discharge current of the battery 102, and then, according to the discharge current of the battery 102 and the current threshold, determines the discharge voltage of the battery 102 when the state of charge of the battery 102 drops to a preset threshold, and also That is, the reference voltage of the battery 102 is determined. Next, obtain the current battery voltage and state of charge of the battery 102. If it is determined that the current battery voltage is lower than the reference voltage and the state of charge is greater than a preset threshold, the state of charge is corrected according to the preset threshold, and the energy storage device The displayed state of charge at 110 is the corrected state of charge.

图3为荷电状态的修正方法的另一应用场景图,电子设备100还包括功率器件120,电池102与功率器件120电连接,电子设备100的功率器件120包括中央处理器(centralprocessing unit,CPU)、存储器和显示屏等,该电池102用于为该功率器件120供电。电子设备100的电池管理系统单元101可以执行如图2所示的储能设备110的电池管理系统单元101的步骤,以修正该电池的当前荷电状态,得到显示的荷电状态。在本实施例中,该电子设备100可以是具有电池的可移动式空调、具有电池的可移动式冰箱等。FIG. 3 is another application scenario diagram of a correction method for the state of charge. The electronic device 100 further includes a power device 120, the battery 102 is electrically connected to the power device 120, and the power device 120 of the electronic device 100 includes a central processing unit (central processing unit, CPU). ), memory and display screen, etc., the battery 102 is used to supply power to the power device 120. The battery management system unit 101 of the electronic device 100 can execute the steps of the battery management system unit 101 of the energy storage device 110 shown in FIG. 2 to correct the current state of charge of the battery and obtain the displayed state of charge. In this embodiment, the electronic device 100 may be a portable air conditioner with a battery, a portable refrigerator with a battery, or the like.

请参阅图4,图4为本申请实施例的荷电状态的修正方法的流程示意图,本申请的荷电状态的修正方法可应用于电子设备100,具体可以应用在电子设备100的电池管理系统单元101。在一些实施例中,该荷电状态的修正方法也可以应用于该电子设备中具有相关处理功能的控制器中。或者该荷电状态的修正方法可以应用在独立的功能模块中,该功能模块具有相关的处理能够,该功能模块可以通过有线或者无线的方式与具有电池的电子设备连接,该功能模块能够通过有线或者无线的方式获取该具有电池的电子设备的相关数据,以执行本申请实施例中提供的荷电状态的修正方法。Please refer to FIG. 4 . FIG. 4 is a schematic flowchart of a method for modifying the state of charge of an embodiment of the present application. The method for correcting the state of charge of the present application can be applied to the electronic device 100 , and specifically can be applied to the battery management system of the electronic device 100 Unit 101. In some embodiments, the method for correcting the state of charge can also be applied to a controller with related processing functions in the electronic device. Or the method for correcting the state of charge can be applied in an independent functional module, which has related processing capabilities, and can be connected to an electronic device with a battery in a wired or wireless manner. Or obtain relevant data of the electronic device with the battery in a wireless manner, so as to execute the method for correcting the state of charge provided in the embodiment of the present application.

参见图4,该荷电状态的修正方法包括以下步骤:Referring to Fig. 4, the correction method of the state of charge comprises the following steps:

步骤S101:在电池处于放电状态下时,获取电池的放电电流。Step S101: Acquire the discharge current of the battery when the battery is in a discharge state.

结合图1、图2和图3所述,电池102处于放电状态下是指电池102向负载供电。放电电流是指电池102向负载供电时,输给该负载的电流。Referring to FIG. 1 , FIG. 2 and FIG. 3 , when the battery 102 is in a discharged state means that the battery 102 supplies power to the load. The discharge current refers to the current output to the load when the battery 102 supplies power to the load.

步骤S102:根据电池的放电电流和电流阈值,确定电池的参考电压。Step S102: Determine the reference voltage of the battery according to the discharge current of the battery and the current threshold.

电流阈值可用于判断放电电流是否过大,在本申请中可以根据电子设备100的相关参数设定一个电流阈值。具体地,放电电流会因为电子设备100的使用工况而加大或减少。例如,电子设备100的电池102向负载供电时,在输出电压一定时,若负载的需求功率加大,则电池102的放电电流随之加大,若负载的需求功率减小,电池102的放电电流随之减小。The current threshold can be used to judge whether the discharge current is too large. In this application, a current threshold can be set according to the relevant parameters of the electronic device 100 . Specifically, the discharge current will increase or decrease due to the operating conditions of the electronic device 100 . For example, when the battery 102 of the electronic device 100 supplies power to the load, when the output voltage is constant, if the demand power of the load increases, the discharge current of the battery 102 increases accordingly; if the demand power of the load decreases, the discharge current of the battery 102 The current decreases accordingly.

同时,放电电流过大会影响该电池的电池电压到达初始放空点电压的时间。具体地,当放电电流大于电流阈值时,说明此时的电流大小会缩短电池电压到达初始放空点电压的时间,当放电电流小于该电流阈值时,说明此时的电流大小不会影响电池电压到达初始放空点电压的时间。At the same time, excessive discharge current will affect the time for the battery voltage of the battery to reach the initial discharge point voltage. Specifically, when the discharge current is greater than the current threshold, it means that the current at this time will shorten the time for the battery voltage to reach the initial discharge point voltage. When the discharge current is less than the current threshold, it means that the current at this time will not affect the battery voltage. Time to initial vent point voltage.

参考电压是指电池102的荷电状态(State of Charge,SOC)下降至预设阈值时,该电池102对应的放电电压,参考电压大于或等于初始放空点电压。The reference voltage refers to the corresponding discharge voltage of the battery 102 when the state of charge (SOC) of the battery 102 drops to a preset threshold, and the reference voltage is greater than or equal to the initial discharge point voltage.

可以理解地,电池管理系统单元101根据电池102的放电电流和电流阈值,可以判断电池102当前的放电电流情况,根据当前的放电电流可以确定对应的参考电压,根据该对应的参考电压可以修正该储能设备110的荷电状态或不修正该储能设备110的荷电状态。Understandably, the battery management system unit 101 can judge the current discharge current of the battery 102 according to the discharge current and the current threshold of the battery 102, determine the corresponding reference voltage according to the current discharge current, and correct the current discharge current according to the corresponding reference voltage. The state of charge of the energy storage device 110 may or may not modify the state of charge of the energy storage device 110 .

荷电状态的预设阈值是指电池102可能会出现显示的荷电状态与实际可使用的荷电状态不匹配的荷电状态的临界值,荷电状态的预设阈值可以为1%、2%或2.4%等。The preset threshold of the state of charge refers to the critical value of the state of charge of the battery 102 that the displayed state of charge may not match the actual usable state of charge. The preset threshold of the state of charge can be 1%, 2%, % or 2.4%, etc.

可以理解地,本申请实施例根据可以根据电子设备100的相关参数设定一个荷电状态的预设阈值和参考电压,参考电压可用以判断当前的电池电压是否接近初始放空点电压,预设阈值可用以判断在电池电压接近初始放空点电压的条件下,当前的荷电状态是否为实际可使用的荷电状态。It can be understood that, according to the embodiment of the present application, a preset threshold value and a reference voltage of the state of charge can be set according to relevant parameters of the electronic device 100. The reference voltage can be used to determine whether the current battery voltage is close to the initial discharge point voltage, and the preset threshold value It can be used to judge whether the current state of charge is the actual usable state of charge under the condition that the battery voltage is close to the initial discharge point voltage.

步骤S103:获取电池当前的电池电压和荷电状态。Step S103: Obtain the current battery voltage and state of charge of the battery.

电池电压是指电池102的当前放电电压,该电池当前的荷电状态为该电池的显示模块显示的荷电状态。The battery voltage refers to the current discharge voltage of the battery 102 , and the current state of charge of the battery is the state of charge displayed by the display module of the battery.

步骤S104:若电池电压小于参考电压,且荷电状态大于预设阈值,则根据预设阈值对荷电状态进行修正。Step S104: If the battery voltage is lower than the reference voltage and the state of charge is greater than a preset threshold, correct the state of charge according to the preset threshold.

可以理解地,由于参考电压略大于或等于初始放空点电压,如果当前电池电压小于参考电压,说明当前电池电压较低,可能出现显示的荷电状态与可实际使用的荷电状态不匹配的情况。因此,当确定当前电池电压小于参考电压后,进一步判断当前的荷电状态与预设阈值的大小,如果当前荷电状态大于预设阈值时,说明该储能设备110当前显示的荷电状态需要进行修正,并根据预设阈值对当前显示的荷电状态进行修正。Understandably, since the reference voltage is slightly greater than or equal to the initial emptying point voltage, if the current battery voltage is lower than the reference voltage, it means that the current battery voltage is low, and the displayed state of charge may not match the actual usable state of charge . Therefore, when it is determined that the current battery voltage is lower than the reference voltage, further judge the current state of charge and the preset threshold, and if the current state of charge is greater than the preset threshold, it means that the state of charge currently displayed by the energy storage device 110 requires Make corrections, and correct the currently displayed state of charge according to the preset threshold.

如此,电子设备100的电池管理系统单元101在电池102处于放电状态下时,获取电池102的放电电流,根据电池102的放电电流和电流阈值可以确定参考电压,该参考电压可以结合电池102的放电电流,确定提前修正荷电状态或不提前修正荷电状态。电池管理系统单元101在确定电池102的参考电压后,再接着获取电池102当前的电池电压和荷电状态。在一些实施例中,若当前的电池电压小于参考电压,说明当前电池电压较低,可能出现当前的荷电状态与可实际使用的荷电状态不匹配的情况,当前的荷电状态大于预设阈值时,可以确定当前的荷电状态与实际使用的荷电状态不匹配。因此,电池管理系统单元101在确定当前的电池电压小于参考电压,且荷电状态大于预设阈值时,根据预设阈值对荷电状态进行修正,以使当前的荷电状态与实际可使用的荷电状态相匹配,也即可以使储能设备110显示的剩余使用时间与实际剩余使用时间匹配。In this way, the battery management system unit 101 of the electronic device 100 obtains the discharge current of the battery 102 when the battery 102 is in the discharge state, and can determine a reference voltage according to the discharge current of the battery 102 and the current threshold, and the reference voltage can be combined with the discharge of the battery 102 Current, determine whether to correct the state of charge in advance or not to correct the state of charge in advance. After determining the reference voltage of the battery 102 , the battery management system unit 101 acquires the current battery voltage and state of charge of the battery 102 . In some embodiments, if the current battery voltage is lower than the reference voltage, it means that the current battery voltage is low, and there may be a situation where the current state of charge does not match the actual state of charge, and the current state of charge is greater than the preset When the threshold is reached, it can be determined that the current state of charge does not match the actual state of charge used. Therefore, when the battery management system unit 101 determines that the current battery voltage is lower than the reference voltage and the state of charge is greater than the preset threshold, it corrects the state of charge according to the preset threshold, so that the current state of charge is different from the actual usable The state of charge is matched, that is, the remaining usage time displayed by the energy storage device 110 is matched with the actual remaining usage time.

在一些实施例中,请参阅图5,荷电状态的修正方法包括步骤S201至S204,步骤S201、步骤S203和步骤S204具体详述分别参见上述实施例中步骤S101、步骤S103和步骤S104的相关表述。其中,在本实施例中:In some embodiments, please refer to FIG. 5. The method for correcting the state of charge includes steps S201 to S204. For specific details of step S201, step S203 and step S204, please refer to the relevant steps of step S101, step S103 and step S104 in the above-mentioned embodiments. expression. Among them, in this embodiment:

步骤S202包括:若放电电流小于电流阈值,则确定第一预设电压为参考电压。Step S202 includes: if the discharge current is less than the current threshold, determining the first preset voltage as the reference voltage.

第一预设电压指上述实施例中提及的初始放空点电压。The first preset voltage refers to the initial emptying point voltage mentioned in the above embodiments.

可以理解地,在放电电流小于电流阈值的情况下,当前电池电压到达初始放空点电压的时间正常,可以直接将初始放空点电压作为参考电压。由于参考电压等于初始放空点电压,因此,不需要提前修正荷电状态,即当前的荷电状态为可实际使用的荷电状态。It can be understood that when the discharge current is less than the current threshold, the time for the current battery voltage to reach the initial emptying point voltage is normal, and the initial emptying point voltage can be directly used as the reference voltage. Since the reference voltage is equal to the initial emptying point voltage, there is no need to correct the state of charge in advance, that is, the current state of charge is the state of charge that can be actually used.

在一些实施例中,请参阅图6,荷电状态的修正方法包括步骤S301至S304,步骤S301、步骤S303和步骤S304具体详述分别参见步骤S101、步骤S103和步骤S104。其中,在本实施例中,步骤S302包括:In some embodiments, please refer to FIG. 6 , the method for correcting the state of charge includes steps S301 to S304 , and the specific details of step S301 , step S303 and step S304 refer to step S101 , step S103 and step S104 respectively. Wherein, in this embodiment, step S302 includes:

若放电电流大于电流阈值,则获取电池的最低电芯电压,最低电芯电压是电池中的所有电芯的电压中的最低值,根据最低电芯电压和放电电流确定参考电压,其中,参考电压大于第一预设电压。If the discharge current is greater than the current threshold, the minimum cell voltage of the battery is obtained, the minimum cell voltage is the lowest value of all cell voltages in the battery, and the reference voltage is determined according to the minimum cell voltage and discharge current, where the reference voltage greater than the first preset voltage.

具体地,电池102包括多块电芯,每一个电芯都有对应的电芯电压,其中,电芯电压值最低的为最低电芯电压。例如,电池102有三块电芯,分别为第一电芯,第二电芯和第三电芯,第一电芯的电压为3.2V、第二电芯的电压为3.4V、第三电芯的电压为3.25V,三块电芯的电压的最低值为3.2V,因此,最低电芯电压是指第一电芯的电压3.2V。Specifically, the battery 102 includes multiple cells, and each cell has a corresponding cell voltage, wherein the cell voltage with the lowest value is the lowest cell voltage. For example, the battery 102 has three batteries, namely the first battery, the second battery and the third battery, the voltage of the first battery is 3.2V, the voltage of the second battery is 3.4V, the voltage of the third battery is The voltage of the battery is 3.25V, and the lowest value of the voltage of the three batteries is 3.2V. Therefore, the lowest battery voltage refers to the voltage of the first battery 3.2V.

可以理解地,在放电电流大于电流阈值的情况下,电池的放电电流越大,那么当前电池电压到达初始放空点电压的时间越短。因为荷电状态的修正不允许跳变,若此时仍以初始放空点电压作为是否修正荷电状态的判断值,则修正的时间过短,不能将正确的荷电状态修正到与实际可使用的荷电状态匹配。在放电电流大于电流阈值的情况下,先确定一个大于初始放空点电压的参考电压。设定的参考电压大于初始放空点电压,因此,相比相关技术,可以提前修正荷电状态,使得能够进行荷电状态修正时间更长,可以将当前的荷电状态及时修正到可实际使用的荷电状态,且不会出现荷电状态跳变。Understandably, when the discharge current is greater than the current threshold, the greater the discharge current of the battery, the shorter the time for the current battery voltage to reach the initial emptying point voltage. Because the correction of the state of charge is not allowed to jump, if the initial discharge point voltage is still used as the judgment value of whether to correct the state of charge at this time, the correction time is too short, and the correct state of charge cannot be corrected to the actual usable value. state of charge match. When the discharge current is greater than the current threshold, first determine a reference voltage greater than the initial discharge point voltage. The set reference voltage is greater than the initial emptying point voltage. Therefore, compared with related technologies, the state of charge can be corrected in advance, so that the correction time of the state of charge can be longer, and the current state of charge can be corrected in time to a practical level. State of charge, and there will be no state of charge jump.

可以理解地,根据最低电芯电压和放电电流确定参考电压,参考电压可以根据最低电芯电压和放电电流的变化而动态变化,从而确定一个大于初始放空点电压的动态的参考电压。It can be understood that the reference voltage is determined according to the minimum cell voltage and discharge current, and the reference voltage can be dynamically changed according to changes in the minimum cell voltage and discharge current, thereby determining a dynamic reference voltage greater than the initial discharge point voltage.

在一些实施例中,请参阅图7,根据最低电芯电压和放电电流确定参考电压包括以下步骤:In some embodiments, referring to FIG. 7 , determining the reference voltage according to the lowest cell voltage and the discharge current includes the following steps:

步骤S401:根据放电电流确定电压修正幅值。Step S401: Determine the voltage correction amplitude according to the discharge current.

不同的放电电流对应不同的电压修正幅值,因此,在获取放电电流后,可以根据放电电流确定对应的电压修正幅值。Different discharge currents correspond to different voltage correction amplitudes. Therefore, after the discharge current is obtained, the corresponding voltage correction amplitude can be determined according to the discharge current.

在一些实施例中,根据放电电流确定电压修正幅值可以包括以下步骤:In some embodiments, determining the voltage correction amplitude according to the discharge current may include the following steps:

S4011:获取预设修正系数。S4011: Obtain a preset correction coefficient.

S4012:根据预设修正系数与放电电流的乘积的绝对值确定电压修正幅值。S4012: Determine the voltage correction amplitude according to the absolute value of the product of the preset correction coefficient and the discharge current.

电压修正幅值的数学表达式为I×k,其中I表示放电电流,k为预设修正系数,修正系数可事先设定。该数学表达式表示,电压修正幅值由预设修正系数k与放电电流I相乘得到。在一个示例中,当放电电流I为0.5时,可以得到一个电压修正幅值0.5k;当放电电流I为0.7时,可以得到一个电压修正幅值0.7k。The mathematical expression of the voltage correction amplitude is I×k, where I represents the discharge current, k is the preset correction coefficient, and the correction coefficient can be set in advance. The mathematical expression indicates that the voltage correction amplitude is obtained by multiplying the preset correction coefficient k and the discharge current I. In an example, when the discharge current I is 0.5, a voltage correction amplitude of 0.5k can be obtained; when the discharge current I is 0.7, a voltage correction amplitude of 0.7k can be obtained.

步骤S402:计算最低电芯电压与电压修正值之和,得到参考电压。Step S402: Calculate the sum of the minimum cell voltage and the voltage correction value to obtain a reference voltage.

在一个示例中,根据最低电芯电压与电压修正值之和,得到参考电压的公式如下所示:In an example, according to the sum of the minimum cell voltage and the voltage correction value, the formula for obtaining the reference voltage is as follows:

V=Vo+I×kV=V o +I×k

其中,V表示参考电压,V0表示最低电芯电压,V0可以通过电池102的参数获取到,I×k表示电压修正值,I为放电电流。在一些实施例中,K可以为0.002,也即放电电流为1A时,则参考电压V在最低电芯电压V0上增加2mV。Wherein, V represents the reference voltage, V 0 represents the minimum cell voltage, V 0 can be obtained through the parameters of the battery 102, I×k represents the voltage correction value, and I is the discharge current. In some embodiments, K may be 0.002, that is, when the discharge current is 1A, the reference voltage V is increased by 2mV on the lowest cell voltage V 0 .

可以理解地,在电池102处于放电状态下,参考电压会随着放电电流的增大,在最低电芯电压的基础上不断增加,以得到动态调整。It can be understood that when the battery 102 is in a discharging state, the reference voltage will increase continuously on the basis of the lowest cell voltage as the discharge current increases, so as to be dynamically adjusted.

在一些实施例中,参考电压小于预设上限值,该预设上限值与电芯的电芯电压相关,单颗电芯电压为3.3V,那么,该预设上限值可以设为3.2V。In some embodiments, the reference voltage is less than the preset upper limit value, the preset upper limit value is related to the cell voltage of the battery cell, and the voltage of a single cell is 3.3V, then, the preset upper limit value can be set to 3.2V.

可以理解地,参考电压小于预设上限值,可以避免参考电压设置过高,提前修正荷电状态后,修正的时间过长,会导致修正后的荷电状态长时间停止在某一个值上。例如修正后的荷电状态长时间停留在1%上。同时,预设上限值稍大于初始放空点电压,可以尽量在电池102放空电量时进行修正。It is understandable that the reference voltage is lower than the preset upper limit, which can avoid setting the reference voltage too high. After correcting the state of charge in advance, the correction time is too long, which will cause the corrected state of charge to stop at a certain value for a long time . For example, the corrected state of charge stays at 1% for a long time. At the same time, the preset upper limit value is slightly greater than the initial emptying point voltage, which can be corrected as much as possible when the battery 102 is emptying.

请参阅图8,在一些实施例中,根据预设阈值对荷电状态进行修正包括以下步骤:Referring to FIG. 8 , in some embodiments, correcting the state of charge according to a preset threshold includes the following steps:

步骤S501:计算荷电状态与预设阈值之间的差值。Step S501: Calculate the difference between the state of charge and a preset threshold.

电池102在放电状态下,会出现不断变化的荷电状态,因此可以计算出每个变化后的荷电状态与预设阈值之间的差值,从而得到电池102在整个放电过程中,每一个荷电状态与预设阈值之间的差值,进而根据差值大小将差值分类。When the battery 102 is in the discharge state, there will be a constantly changing state of charge, so the difference between each changed state of charge and the preset threshold can be calculated, so as to obtain the battery 102 during the entire discharge process, each The difference between the state of charge and the preset threshold, and then classify the difference according to the size of the difference.

按照以下公式求得差值A:Calculate the difference A according to the following formula:

A=BSOC-CA=B SOC -C

其中,A表示差值,BSOC表示电池102的荷电状态,C表示预设阈值,该公式表示差值A为电池102的荷电状态BSOC减去预设阈值C。Wherein, A represents the difference, B SOC represents the state of charge of the battery 102 , and C represents the preset threshold, and the formula indicates that the difference A is the state of charge B SOC of the battery 102 minus the preset threshold C.

在一个示例中,电池102的荷电状态BSOC为6%,预设阈值C为1%,则差值A为6%-1%=5%。以此推算,电池102在整个放电过程中,根据差值大小将差值分类,差值大于20%为一类、差值小于或者等于20%且大于10%为一类、差值小于或者等于10%且大于5%为一类和差值小于或等于5%且大于1%的为一类。差值分类情况可见表1。In one example, the state of charge B SOC of the battery 102 is 6%, the preset threshold C is 1%, and the difference A is 6%−1%=5%. Based on this calculation, during the entire discharge process of the battery 102, the difference is classified according to the size of the difference, the difference is greater than 20% as a class, the difference is less than or equal to 20% and greater than 10% is a class, the difference is less than or equal to 10% and greater than 5% is one category and the difference is less than or equal to 5% and greater than 1% is one category. The difference classification can be seen in Table 1.

Figure BDA0004166311960000081
Figure BDA0004166311960000081

步骤S502:根据差值修正荷电状态。Step S502: Correcting the state of charge according to the difference.

可以理解地,根据不同大小的差值修正对应的荷电状态,可以在同一修正时间内,将不同大小的荷电状态都修正成可实际使用的荷电状态。It can be understood that by correcting the corresponding state of charge according to the differences of different magnitudes, the states of charge of different magnitudes can be corrected into practically usable states of charge within the same correction time.

在一些实施例中,根据差值修正当前荷电状态包括以下步骤:In some embodiments, correcting the current state of charge according to the difference includes the following steps:

S5021:根据差值获取对应的修正倍率,其中,修正倍率随差值的增大而增大。S5021: Obtain a corresponding correction magnification according to the difference, where the correction magnification increases as the difference increases.

在计算出差值后,根据差值类别还可以获得每个类别对应的修正倍率,从而使不同大小的当前荷电状态都能得到对应的修正幅度。通过相关公式或实验可以得到每个类别对应的修正倍率。在一个示例中,差值类别和修正倍率的关系可见表2,也即第一类别的差值对应的修正倍率为4倍、第二类别的差值对应的修正倍率为3倍、第三类别的差值对应的修正倍率为2倍、第四类别的差值对应的修正倍率为1.5倍。After the difference is calculated, the corresponding correction factor for each category can be obtained according to the category of the difference, so that the current state of charge of different sizes can obtain a corresponding correction range. The correction factor corresponding to each category can be obtained through related formulas or experiments. In one example, the relationship between the difference category and the correction factor can be seen in Table 2, that is, the correction factor corresponding to the difference value of the first category is 4 times, the correction factor corresponding to the difference value of the second category is 3 times, and the correction factor corresponding to the difference value of the third category is 3 times. The correction magnification corresponding to the difference of 2 is 2 times, and the correction magnification corresponding to the difference of the fourth category is 1.5 times.

Figure BDA0004166311960000091
Figure BDA0004166311960000091

在一个示例中,根据表2的对应关系可以得知,当计算出的差值为5%,则修正倍率为1.5倍。In one example, according to the corresponding relationship in Table 2, it can be known that when the calculated difference is 5%, the correction factor is 1.5 times.

S5022:根据修正倍率对当前的荷电状态进行修正。S5022: Correct the current state of charge according to the correction magnification.

接上一个示例,根据修正倍率1.5倍对当前的荷电状态6%进行修正,以修正成可实际使用的荷电状态。Continuing from the previous example, the current state of charge of 6% is corrected according to the correction factor of 1.5 times, so as to correct it into a state of charge that can be used in practice.

在一些实施例中,根据修正倍率对当前荷电状态进行修正还包括以下步骤:In some embodiments, correcting the current state of charge according to the correction factor further includes the following steps:

S50221:根据放电电流计算电池的放电电量。S50221: Calculate the discharge power of the battery according to the discharge current.

放电电量指放电过程的放电电流累积得到的电量。可以理解地,从开始放电状态至当前放电状态的放电过程中,电池102一直向负载输入放电电流,累计电池102的整个放电过程的放电电流及放电时间可以得到电池102的放电电量。The discharge power refers to the power accumulated by the discharge current during the discharge process. It can be understood that during the discharge process from the start discharge state to the current discharge state, the battery 102 has been inputting discharge current to the load, and the discharge current and discharge time of the battery 102 during the entire discharge process can be accumulated to obtain the discharge power of the battery 102 .

S50222:根据修正倍率对放电电量进行修正。S50222: Correct the discharge electric quantity according to the correction ratio.

修正后的放电电量可以用数学表达式K×I×T表示,其中,K表示为修正倍率,I表示为放电电流,T为放电时间。该数学表达式表示,修正倍率K、放电电流I和放电时间T相乘得到修正后的放电电量。接上一个示例,修正倍率K为1.5倍,则修正后的放电电量为1.5I×T。可以理解地,根据修正倍率修正后的放电电量,更接近电池102在整个放电过程中已经实际消耗的电量。The corrected discharge capacity can be expressed by a mathematical expression K×I×T, where K represents the correction rate, I represents the discharge current, and T represents the discharge time. The mathematical expression expresses that the correction rate K, the discharge current I and the discharge time T are multiplied to obtain the corrected discharge electric quantity. Continuing from the previous example, if the correction factor K is 1.5 times, then the corrected discharge capacity is 1.5I×T. It can be understood that the discharge power corrected according to the correction factor is closer to the power actually consumed by the battery 102 during the entire discharge process.

S50223:根据修正后的放电电量、电池的满电电量、荷电状态计算得到修正后的荷电状态。S50223: Calculate and obtain the corrected state of charge according to the corrected discharged power, the fully charged power of the battery, and the state of charge.

电池102的满电电量和荷电状态可以从电池102的已设参数中获得。求得修正后的荷电状态的公式如下所示:The full charge capacity and state of charge of the battery 102 can be obtained from the preset parameters of the battery 102 . The formula for obtaining the corrected state of charge is as follows:

SOCz=SOC-((K×I×T)/fullcap)SOC z =SOC-((K×I×T)/fullcap)

其中,SOCz表示修正后的荷电状态,SOC表示电池102的荷电状态、K×I×T表示修正后的放电电量、fullcap表示电池102的满电电量,该公式表示修正后的放电电量K×I×T除以满电电量fullcap后,与电池102的荷电状态SOC相减,从而得到修正后的荷电状态SOCzWherein, SOC z represents the state of charge after correction, SOC represents the state of charge of the battery 102, K × I × T represents the discharge capacity after correction, fullcap represents the full charge capacity of the battery 102, and this formula represents the discharge capacity after correction K×I×T is divided by fullcap, and then subtracted from the state of charge SOC of the battery 102 to obtain the corrected state of charge SOC z .

接上一个示例,最后,在得到修正后的放电电量为1.5I×T后,再结合电池102的满电电量fullcap和电池102的荷电状态SOC可以得到修正后的荷电状态SOCzContinuing from the previous example, finally, after obtaining the corrected discharge capacity of 1.5I×T, the corrected SOC z can be obtained by combining the fully charged capacity fullcap of the battery 102 with the SOC of the battery 102 .

请参阅图9,在一些实施例中,荷电状态的修正方法包括步骤S801至S803,步骤S801至步骤S802具体详述参见步骤S101至步骤S102。其中,在步骤802之后,荷电状态的修正方法还包括以下步骤:Please refer to FIG. 9 . In some embodiments, the method for correcting the state of charge includes steps S801 to S803 . For details of steps S801 to S802 , refer to steps S101 to S102 . Wherein, after step 802, the method for correcting the state of charge further includes the following steps:

步骤S803:若电池电压大于参考电压,则不对荷电状态进行修正。Step S803: If the battery voltage is greater than the reference voltage, then the state of charge is not corrected.

在确定参考电压后,如果获取的电池电压大于参考电压,则不对当前的荷电状态进行修正。在一个示例中,电池管理系统单元101获取的电池电压为3.6V,大于参考电压为3.25V,则不对当前的荷电状态进行修正。After the reference voltage is determined, if the obtained battery voltage is greater than the reference voltage, the current state of charge is not corrected. In one example, the battery voltage obtained by the battery management system unit 101 is 3.6V, which is 3.25V higher than the reference voltage, and the current state of charge is not corrected.

可以理解地,如果当前电池电压大于参考电压,说明当前电池电压较高,出现显示的荷电状态与可实际使用的荷电状态不匹配的可能性较低,因此,可以不对当前的荷电状态进行修正。It can be understood that if the current battery voltage is greater than the reference voltage, it means that the current battery voltage is relatively high, and the possibility that the displayed state of charge does not match the actual state of charge is low. Therefore, the current state of charge may not be corrected. Make corrections.

请参阅图10,在一些实施例中,荷电状态的修正方法包括步骤S901至903,步骤S901至步骤S902具体详述参见步骤S101至步骤S102。其中,在步骤902之后,荷电状态的修正方法还包括以下步骤:Referring to FIG. 10 , in some embodiments, the method for correcting the state of charge includes steps S901 to 903 , and for details of steps S901 to S902 , refer to steps S101 to S102 . Wherein, after step 902, the method for correcting the state of charge further includes the following steps:

步骤S903:若电池电压小于参考电压,且荷电状态小于预设阈值,则不对荷电状态进行修正。Step S903: If the battery voltage is less than the reference voltage and the state of charge is less than a preset threshold, then the state of charge is not corrected.

在其他实施例中,在确定参考电压后,如果获取的电池电压小于参考电压,且荷电状态小于预设阈值,同样不对荷电状态进行修正。In other embodiments, after the reference voltage is determined, if the acquired battery voltage is less than the reference voltage and the state of charge is less than a preset threshold, the state of charge is also not corrected.

在一个示例中,电池管理系统单元101获取的电池电压为3.1V,小于参考电压为3.25V,且获取的当前的荷电状态0.5%小于预设阈值1%,不对当前的荷电状态0.5%进行修正。In one example, the battery voltage obtained by the battery management system unit 101 is 3.1V, which is lower than the reference voltage of 3.25V, and the obtained current state of charge of 0.5% is less than the preset threshold of 1%, which is not the same as the current state of charge of 0.5%. Make corrections.

可以理解地,如果当前电池电压小于参考电压,虽然说明当前电池电压较低,可能出现显示的荷电状态与可实际使用的荷电状态不匹配的情况,然而,当前的荷电状态小于预设阈值,说明此时的当前的荷电状态符合电池电压较低的情况,可以不对当前的荷电状态进行修正。Understandably, if the current battery voltage is lower than the reference voltage, although the current battery voltage is low, there may be a situation where the displayed state of charge does not match the actual state of charge. However, the current state of charge is less than the preset The threshold value indicates that the current state of charge at this time is in line with the low battery voltage, and the current state of charge may not be corrected.

作为一种实施例,请参阅图11,电子设备100包括存储器31、至少一个处理器32、至少一条通信总线33以及电池102。As an embodiment, referring to FIG. 11 , an electronic device 100 includes a memory 31 , at least one processor 32 , at least one communication bus 33 and a battery 102 .

本领域技术人员应该了解,图11示出的储能设备110的结构并不构成本申请实施例的限定,电子设备100还可以包括比图示更多或更少的其他硬件或者软件,或者不同的部件布置。例如,电子设备100还可以包括多个接口,第一接口用于接入负载以为负载供电。第二接口用于接入独立电池102包,以增加储能设备110的容量。Those skilled in the art should understand that the structure of the energy storage device 110 shown in FIG. layout of the components. For example, the electronic device 100 may further include multiple interfaces, and the first interface is used to connect to a load to supply power to the load. The second interface is used to connect the independent battery pack 102 to increase the capacity of the energy storage device 110 .

电子设备100为包括如前所述的储能设备110、冰箱或空调等设置有电池102的设备。需要说明的是,电子设备100仅为举例,其他现有的或今后可能出现的电子产品如可适应于本申请,也应包含在本申请的保护范围以内,并以引用方式包含于此。The electronic device 100 is a device provided with a battery 102 including the aforementioned energy storage device 110 , a refrigerator, or an air conditioner. It should be noted that the electronic device 100 is only an example, and other existing or future electronic products that can be adapted to this application should also be included in the scope of protection of this application and included here by reference.

在一些实施例中,存储器31中存储有计算机程序,计算机程序被至少一个处理器32执行时对电池102实现如所述的荷电状态的修正方法中的全部或者部分步骤。存储器31包括只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable Read-OnlyMemory,PROM)、可擦除可编程只读存储器(Erasable Programmable Read-Only Memory,EPROM)、一次可编程只读存储器(One-time Programmable Read-Only Memory,OTPROM)、电子擦除式可复写只读存储器(Electrically-Erasable Programmable Read-Only Memory,EEPROM)、只读光盘(Compact Disc Read-Only Memory,CD-ROM)或其他光盘存储器、磁盘存储器、磁带存储器、或者能够用于携带或存储数据的计算机可读的任何其他介质。In some embodiments, a computer program is stored in the memory 31 , and when the computer program is executed by at least one processor 32 , all or part of the steps in the method for correcting the state of charge as described above are implemented for the battery 102 . Memory 31 includes read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable Read-Only Memory, PROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM), one-time programmable Programmable Read-Only Memory (One-time Programmable Read-Only Memory, OTPROM), Electrically-Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory, CD-ROM) or other optical disk storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

进一步地,计算机可读存储介质可主要包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序等;存储数据区可存储根据电子设备100的使用所创建的数据等。Further, the computer-readable storage medium may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function, etc.; created data, etc.

在一些实施例中,至少一个处理器32是电子设备100的控制核心(Control Unit),利用各种接口和线路连接整个电子设备100的各个部件,通过运行或执行存储在存储器31内的程序或者模块,以及调用存储在存储器31内的数据,以执行电子设备100的各种功能和处理数据。例如,至少一个处理器32执行存储器中存储的计算机程序时实现本申请实施例中的荷电状态的修正方法的全部或者部分步骤;或者实现电池102包加热时长确定装置的全部或者部分功能。至少一个处理器32可以由集成电路组成,例如可以由单个封装的集成电路所组成,也可以是由多个相同功能或不同功能封装的集成电路所组成,包括一个或者多个中央处理器(Central Processing unit,CPU)、微处理器、数字处理芯片、图形处理器及各种控制芯片的组合等。In some embodiments, at least one processor 32 is the control core (Control Unit) of the electronic device 100, using various interfaces and lines to connect various components of the entire electronic device 100, by running or executing programs stored in the memory 31 or module, and call data stored in the memory 31 to execute various functions of the electronic device 100 and process data. For example, when at least one processor 32 executes the computer program stored in the memory, it realizes all or part of the steps of the method for correcting the state of charge in the embodiment of the present application; or realizes all or part of the functions of the device for determining the heating duration of the battery pack 102 . At least one processor 32 may be composed of integrated circuits, for example, may be composed of a single packaged integrated circuit, or may be composed of multiple integrated circuits with the same function or different function packages, including one or more central processing units (Central Processing Units). Processing unit, CPU), microprocessor, digital processing chip, graphics processor and a combination of various control chips, etc.

在一些实施例中,至少一条通信总线33被设置为实现存储器31以及至少一个处理器32等之间的连接通信。In some embodiments, at least one communication bus 33 is configured to implement communication between the memory 31 and at least one processor 32 .

尽管未示出,电子设备100还可以包括给各个部件供电的电池102,优选的,电池102可以通过电源管理装置与至少一个处理器32逻辑相连,从而通过电源管理装置实现管理充电、放电、以及功耗管理等功能。储能设备110还可以包括一个或一个以上的直流或交流电源、再充电装置、电源故障检测电路、电源转换器或者逆变器、电源状态指示器等任意组件。电子设备100还可以包括多种传感器、蓝牙模块、Wi-Fi模块等,在此不再赘述。Although not shown, the electronic device 100 may also include a battery 102 for supplying power to various components. Preferably, the battery 102 may be logically connected to at least one processor 32 through a power management device, so as to manage charging, discharging, and functions such as power management. The energy storage device 110 may also include one or more DC or AC power sources, recharging devices, power failure detection circuits, power converters or inverters, power status indicators and other arbitrary components. The electronic device 100 may also include various sensors, a Bluetooth module, a Wi-Fi module, etc., which will not be repeated here.

上述以软件功能模块的形式实现的集成的单元,可以存储在一个计算机可读取存储介质中。上述软件功能模块存储在一个存储介质中,包括若干指令用以使得一台储能设备110(可以是个人计算机或者网络设备等)或控制器(processor)执行本申请各个实施例方法的部分。The above-mentioned integrated units implemented in the form of software function modules can be stored in a computer-readable storage medium. The above-mentioned software functional modules are stored in a storage medium, and include several instructions for enabling an energy storage device 110 (which may be a personal computer or network device, etc.) or a processor to execute part of the method of each embodiment of the present application.

在本申请所提供的几个实施例中,应该理解到,所揭露的装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,模块的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules is only a logical function division, and there may be other division methods in actual implementation.

作为分离部件说明的模块可以是或者也可以不是物理上分开的,作为模块显示的部件可以是或者也可以不是物理单元,既可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。A module described as a separate component may or may not be physically separated, and a component shown as a module may or may not be a physical unit, and may be located in one place or distributed over multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

另外,在本申请各个实施例中的各功能模块可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用硬件加软件功能模块的形式实现。In addition, each functional module in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software function modules.

对于本领域技术人员而言,显然本申请不限于上述示范性实施例的细节,而且在不背离本申请的精神或基本特征的情况下,能够以其他的具体形式实现本申请。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本申请的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括在本申请内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。此外,显然“包括”一词不排除其他单元或,单数不排除复数。说明书中陈述的多个单元或装置也可以由一个单元或装置通过软件或者硬件来实现。第一,第二等词语用来表示名称,而并不表示任何特定的顺序。It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, but that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and not restrictive in all points of view, and the scope of the application is defined by the appended claims rather than the foregoing description, and it is intended that the scope of the present application be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in this application. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is clear that the word "comprising" does not exclude other elements or the singular does not exclude the plural. A plurality of units or devices stated in the specification may also be realized by one unit or device through software or hardware. The words first, second, etc. are used to denote names and do not imply any particular order.

最后应说明的是,以上实施例仅用以说明本申请的技术方案而非限制,尽管参照较佳实施例对本申请进行了详细说明,本领域的普通技术人员应当理解,可以对本申请的技术方案进行修改或等同替换,而不脱离本申请技术方案的精神和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application without limitation. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be Make modifications or equivalent replacements without departing from the spirit and scope of the technical solutions of the present application.

Claims (10)

1. A method of modifying a state of charge, the method comprising:
when a battery is in a discharging state, obtaining the discharging current of the battery;
determining a reference voltage of the battery according to the discharge current and the current threshold value of the battery, wherein the reference voltage is the discharge voltage of the battery when the charge state of the battery is reduced to a preset threshold value;
acquiring the current battery voltage and the current state of charge of the battery;
and if the battery voltage is smaller than the reference voltage and the state of charge is larger than the preset threshold, correcting the state of charge according to the preset threshold.
2. The method of claim 1, wherein determining the reference voltage of the battery based on the discharge current of the battery and the current threshold comprises:
And if the discharge current is smaller than the current threshold value, determining a first preset voltage as a reference voltage.
3. The method of claim 2, wherein determining the reference voltage of the battery based on the discharge current of the battery and the current threshold comprises:
if the discharge current is greater than the current threshold, acquiring the lowest cell voltage of the battery, wherein the lowest cell voltage is the lowest value of the voltages of all cells in the battery;
and determining the reference voltage according to the lowest cell voltage and the discharge current, wherein the reference voltage is larger than the first preset voltage.
4. The method of claim 1, wherein said modifying said state of charge according to said preset threshold comprises:
calculating a difference between the state of charge and the preset threshold;
and correcting the state of charge according to the difference value.
5. The method of claim 4, wherein said modifying said state of charge based on said difference comprises:
acquiring a corresponding correction multiplying power according to the difference value, wherein the correction multiplying power is increased along with the increase of the difference value;
And correcting the state of charge according to the correction multiplying power.
6. The method of claim 5, wherein said modifying said state of charge according to said modification factor comprises:
calculating the discharge electric quantity of the battery according to the discharge current;
correcting the discharge electric quantity according to the correction multiplying power;
and calculating according to the corrected discharge electric quantity, the full electric quantity of the battery and the state of charge to obtain the corrected state of charge.
7. The method according to claim 1, wherein the method further comprises:
if the battery voltage is greater than the reference voltage, not correcting the state of charge; or alternatively
And if the battery voltage is smaller than the reference voltage and the state of charge is smaller than the preset threshold, not correcting the state of charge.
8. A method according to claim 3, wherein said determining said reference voltage from said minimum cell voltage and said discharge current comprises:
determining a voltage correction amplitude according to the discharge current;
and calculating the sum of the lowest cell voltage and the voltage correction value to obtain the reference voltage.
9. An electronic device, comprising:
a battery;
a processor; and
a memory for storing executable instructions of the processor;
wherein execution of the executable instructions by the processor causes the electronic device to perform the state of charge correction method of any one of claims 1 to 8.
10. A storage medium having stored thereon a computer program, which when executed by a processor, implements the state of charge correction method of any one of claims 1 to 8.
CN202310358721.9A 2023-03-27 2023-03-27 Method for correcting state of charge, electronic equipment and storage medium Pending CN116359755A (en)

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