Energy storage battery management method and system

Abstract

The invention discloses an energy storage battery management method and system, and the method comprises the steps: obtaining the environment information of an environment where an energy storage battery is located; determining the variation of the SOC value of the energy storage battery under the environment information of the environment where the energy storage battery is located; determining a first target discharge depth of the energy storage battery based on the variation of the SOC value of the energy storage battery and an environment factor of an environment where the energy storage battery is located; and acquiring charging times, discharging times, charging depth, discharging depth and age limit information of the energy storage battery. According to the method and the device, the technical problem that the health degree of the battery is not accurately determined due to the fact that the calculated SOC is not accurate because environmental factors are not considered when the SOC of the battery is calculated in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage battery management, and in particular to an energy storage battery management method and system. Background Art

[0002] The development of energy storage batteries is in a stage of rapid growth. Energy storage batteries are a device that converts electrical energy into chemical energy and stores it. Its main function is to provide power support when the power supply of the power grid is unstable or the demand is at a peak. Energy storage batteries are widely used in the fields of automobiles and aerospace. In energy storage batteries, the battery voltage is usually collected through a battery management system to obtain the battery SOC. However, as the battery temperature changes, the battery SOC is not accurate. Therefore, an energy storage battery management method and system are proposed to solve the technical problem that the prior art does not consider environmental factors when calculating the battery SOC, making the calculated SOC inaccurate, resulting in inaccurate determination of the battery health. Summary of the invention

[0003] The embodiments of the present invention provide a method and system for managing an energy storage battery, which solves the technical problem that the prior art does not consider environmental factors when calculating the SOC of a battery, making the calculated SOC inaccurate, resulting in inaccurate determination of the health of the battery.

[0004] According to one aspect of an embodiment of the present invention, a method for managing an energy storage battery is provided, and the method may include: acquiring environmental information of an environment in which the energy storage battery is located; determining a change in an SOC value of the energy storage battery under the environmental information of the environment in which the energy storage battery is located; determining a first target discharge depth of the energy storage battery based on the change in the SOC value of the energy storage battery and environmental factors of the environment in which the energy storage battery is located; acquiring information on the number of charges, the number of discharges, the charge depth, the discharge depth, and the age of the energy storage battery; predicting a health of the energy storage battery and a second target discharge depth of the energy storage battery based on the number of charges, the number of discharges, the charge depth, the discharge depth, and the age of the energy storage battery; when the health of the energy storage battery is greater than a preset health, determining a target depth difference between the first target discharge depth and the second target discharge depth; and determining a target health of the energy storage battery based on the target depth difference.

[0005] Optionally, under the environmental information of the environment in which the energy storage battery is located, determining the change in the SOC value of the energy storage battery includes: under the environmental information of the environment in which the energy storage battery is located, according to a first formula Δ=SOC1-SOC2, obtaining the change Δ in the SOC value of the energy storage battery, wherein SOC1 is a value at a first moment when the energy storage battery is not discharged, and SOC2 is a value at a second moment when the energy storage battery is completely discharged.

[0006] Optionally, based on the change in the SOC value of the energy storage battery and the environmental factors of the environment in which the energy storage battery is located, determining the first target discharge depth of the energy storage battery includes: obtaining the first target discharge depth φ1 of the energy storage battery according to a second formula φ1=λΔ, wherein Δ is the change in the SOC value of the energy storage battery, and λ is the environmental factors of the environment in which the energy storage battery is located.

[0007] Optionally, before obtaining the charge times, discharge times, charge depth, discharge depth and age information of the energy storage battery, the method further includes: recording the charge times and discharge times of the energy storage battery; obtaining the discharge depth and charge depth of the energy storage battery based on the charge times and discharge times of the energy storage battery; and recording the age information of the energy storage battery based on the production date of the energy storage battery.

[0008] Optionally, based on the number of charges, number of discharges, charge depth, discharge depth and age information of the energy storage battery, predicting the health of the energy storage battery includes: according to the third formula Get the total charging depth φ of the energy storage battery 总充 , where n is the number of times the energy storage battery is charged, φ 充i The charging depth corresponding to the i-th charging of the energy storage battery;

[0009] According to the fourth formula Get the total discharge depth φ of the energy storage battery 总放 , where m is the number of discharges of the energy storage battery, and φdischargec is the discharge depth corresponding to the cth discharge of the energy storage battery;

[0010] According to the fifth formula Get the average charging value φ of the energy storage battery 充平 ;

[0011] According to the sixth formula Get the average discharge value of the energy storage battery φ 放平 ;

[0012] According to the seventh formula The health H of the energy storage battery is obtained, wherein y is the age information.

[0013] Optionally, based on the number of discharges and the discharge depth of the energy storage battery, predicting the second target discharge depth of the energy storage battery includes: according to the eighth formula Get the second target discharge depth φ2 of the energy storage battery, is the attenuation factor corresponding to the second target discharge depth.

[0014] Optionally, when the health of the energy storage battery is greater than a preset health, determining a target depth difference between the first target discharge depth and the second target discharge depth, including: when the health of the energy storage battery is greater than a preset health, determining the difference between the first target discharge depth and the second target discharge depth as the target depth difference.

[0015] Optionally, based on the target depth difference, determining a target health of the energy storage battery includes: when the target depth difference is less than a preset target depth difference, determining the predicted health of the energy storage battery as the target health of the energy storage battery.

[0016] In the embodiment of the present invention, environmental information of the environment in which the energy storage battery is located is obtained; under the environmental information of the environment in which the energy storage battery is located, the change amount of the SOC value of the energy storage battery is determined; based on the change amount of the SOC value of the energy storage battery and the environmental factors of the environment in which the energy storage battery is located, the first target discharge depth of the energy storage battery is determined; the number of charges, the number of discharges, the charge depth, the discharge depth and the age information of the energy storage battery are obtained; based on the number of charges, the number of discharges, the charge depth, the discharge depth and the age information of the energy storage battery, the health of the energy storage battery and the second target discharge depth of the energy storage battery are predicted; when the health of the energy storage battery is greater than the preset health, the target depth difference between the first target discharge depth and the second target discharge depth is determined; based on the target depth difference, the target health of the energy storage battery is determined, so as to solve the technical problem that the prior art does not consider environmental factors when calculating the SOC of the battery, so that the calculated SOC is inaccurate, resulting in inaccurate determination of the health of the battery, and achieves the technical effect of considering environmental factors when calculating the SOC of the battery, improving the accuracy of the calculated SOC, and accurately determining the health of the battery.

[0017] Advantages of the present invention:

[0018] Compared with the prior art, the present invention first obtains environmental information of the environment in which the energy storage battery is located, and then obtains the change in the SOC value of the energy storage battery based on the environmental information of the environment in which the energy storage battery is located, and determines the first target discharge depth of the energy storage battery based on the change in the SOC value of the energy storage battery and the environmental factors of the environment in which the energy storage battery is located, and predicts the health of the energy storage battery and the second target discharge depth of the energy storage battery based on the number of charges, the number of discharges, the charge depth, the discharge depth and the age information of the energy storage battery, and then compares the first discharge depth with the second discharge depth to obtain a target depth difference, and determines the target health of the energy storage battery based on the current depth difference. The present application compares the measured discharge depth value of the battery with the discharge depth value obtained based on the charging and discharging habits of the battery to obtain the target depth difference of the battery, and obtains the health of the battery based on the target depth difference of the battery, so that the obtained SOC of the battery is more accurate and the health of the battery is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 is a flow chart of a method for managing an energy storage battery according to an embodiment of the present invention;

[0021] Figure 2 It is a structural block diagram of an energy storage battery management system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] Example 1

[0025] According to an embodiment of the present invention, a method for managing an energy storage battery is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system comprising at least one set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0026] Figure 1 is a flow chart of a method for managing an energy storage battery according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0027] Step S101, obtaining environmental information of the environment in which the energy storage battery is located.

[0028] In the technical solution provided in the above step S101 of the present invention, the temperature information of the environment in which the energy storage battery is located is obtained by a temperature sensor.

[0029] Step S102: determining a change in the SOC value of the energy storage battery under the environmental information of the environment in which the energy storage battery is located.

[0030] In the technical solution provided in the above step S102 of the present invention, the change in the state of charge (SOC) value of the energy storage battery is obtained under the environmental information of the environment in which the energy storage battery is located, wherein SOC is also called the remaining capacity, which represents the ratio of the remaining capacity of the battery after being used for a period of time or being shelved for a long time to the capacity of the battery in a fully charged state, and is usually expressed as a percentage, and its value range is 0 to 1. When SOC=0, it means that the battery is fully discharged, and when SOC=1, it means that the battery is fully charged, wherein the change in the SOC value of the energy storage battery is a specific value.

[0031] Step S103: determining a first target discharge depth of the energy storage battery based on the change in the SOC value of the energy storage battery and the environmental factors of the environment in which the energy storage battery is located.

[0032] In the technical solution provided in the above step S103 of the present invention, the change in the SOC value of the energy storage battery and the environmental factor of the environment in which the energy storage battery is located are calculated to obtain the first target discharge depth of the energy storage battery, wherein the environmental factor is determined according to the range of the temperature value of the environment in which the energy storage battery is located.

[0033] Step S104, obtaining information on the number of charges, number of discharges, charge depth, discharge depth and age of the energy storage battery.

[0034] In the technical solution provided in the above step S104 of the present invention, the number of charges and discharges of the energy storage battery since its production, the depth of charge during each charge, the depth of discharge during each discharge, and the age information of the energy storage battery from production to this time are obtained.

[0035] Step S105, predicting the health of the energy storage battery and a second target discharge depth of the energy storage battery based on the number of charges, the number of discharges, the depth of charge, the depth of discharge and the age information of the energy storage battery.

[0036] In the technical solution provided in the above step S105 of the present invention, the number of charges, the number of discharges, the charge depth, the discharge depth and the age information of the energy storage battery are calculated to predict the health of the energy storage battery, and the discharge depth and the number of discharges of the energy storage battery are calculated to predict the second target discharge depth of the energy storage battery.

[0037] The above method of this embodiment is further introduced below.

[0038] As an optional implementation manner, step S102, under the environmental information of the environment in which the energy storage battery is located, determines the change in the SOC value of the energy storage battery, including: under the environmental information of the environment in which the energy storage battery is located, according to the first formula Δ=SOC1-SOC2, obtaining the change Δ in the SOC value of the energy storage battery, wherein SOC1 is the value of the energy storage battery at the first moment when it is not discharged, and SOC2 is the value of the energy storage battery at the second moment when it is completely discharged.

[0039] In this embodiment, the difference between the SOC1 at the first moment when the energy storage battery is not discharged and the SOC2 at the second moment when the energy storage battery is discharged is determined as the variation Δ of the SOC value of the energy storage battery.

[0040] As an optional implementation manner, step S103, based on the change in the SOC value of the energy storage battery and the environmental factors of the environment in which the energy storage battery is located, determines the first target discharge depth of the energy storage battery, including: according to the second formula φ1=λΔ, obtaining the first target discharge depth φ1 of the energy storage battery, wherein Δ is the change in the SOC value of the energy storage battery, and λ is the environmental factor of the environment in which the energy storage battery is located.

[0041] In this embodiment, Δ is the change in the SOC value of the energy storage battery, and λ is the environmental factor of the environment in which the energy storage battery is located, which are substituted into the second formula φ1=λΔ to obtain the first target discharge depth of the energy storage battery, wherein the first target discharge depth is a specific value.

[0042] As an optional implementation manner, in step S104, before obtaining the number of charges, number of discharges, charge depth, discharge depth and age information of the energy storage battery, the method further includes: recording the number of charges and discharges of the energy storage battery; obtaining the discharge depth and charge depth of the energy storage battery based on the number of charges and discharges of the energy storage battery; and recording the age information of the energy storage battery based on the production date of the energy storage battery.

[0043] In this embodiment, the number of times the energy storage battery is charged and discharged is recorded by a timer included in the energy storage battery. According to the number of times the energy storage battery is charged and discharged, the discharge depth of each discharge and the charge depth of each charge of the energy storage battery are obtained. Taking the production date of the energy storage battery as the standard, the age information of the energy storage battery is obtained.

[0044] As an optional embodiment, step S105 predicts the health of the energy storage battery based on the number of charges, discharges, charge depth, discharge depth and age information of the energy storage battery, including: according to the third formula Get the total charging depth φ of the energy storage battery 总充 , where n is the number of times the energy storage battery is charged, φ 充i is the charging depth corresponding to the i-th charging of the energy storage battery; according to the fourth formula Get the total discharge depth φ of the energy storage battery 总放 , where m is the number of discharges of the energy storage battery, and φdischarged is the discharge depth corresponding to the cth discharge of the energy storage battery; according to the fifth formula Get the average charging value φ of the energy storage battery 充平 According to the sixth formula Get the average discharge value of the energy storage battery φ 放平 According to the seventh formula The health H of the energy storage battery is obtained, wherein y is the age information.

[0045] In this embodiment, φ 充i The total charging depth of the energy storage battery is obtained by summing up each charging depth corresponding to each charging number of the energy storage battery. 总充 , put φc as each discharge depth corresponding to each discharge number of the energy storage battery, and add them up to get the total discharge depth φ of the energy storage battery 总放 , φ 总充 The quotient between the total charging depth of the energy storage battery and n is the total number of times the energy storage battery is charged, which is determined as the average charging value of the energy storage battery φ 充平 , φtotal is the quotient of the total discharge depth of the energy storage battery and m is the total number of discharge depths of the energy storage battery, and the average discharge value of the energy storage battery is determined as φ 放平 , the average charging value of the energy storage battery φ 充平 The average discharge value of the energy storage battery 放平 The sum of the two and the quotient of the age information is determined as the health of the energy storage battery.

[0046] As an optional embodiment, step S105, based on the number of discharges and the discharge depth of the energy storage battery, predicting the second target discharge depth of the energy storage battery includes: according to the eighth formula Get the second target discharge depth φ2 of the energy storage battery, φ 总放 is the total discharge depth of the energy storage battery, is the attenuation factor corresponding to the second target discharge depth.

[0047] In this embodiment, φ is the quotient of the total discharge depth of the energy storage battery and m is the total number of discharge depths of the energy storage battery, and The attenuation factor corresponding to the second target discharge depth is multiplied to obtain the second target discharge depth φ2 of the energy storage battery.

[0048] As an optional implementation method, step S106, when the health of the energy storage battery is greater than the preset health, determining the target depth difference between the first target discharge depth and the second target discharge depth, includes: when the health of the energy storage battery is greater than the preset health, determining the difference between the first target discharge depth and the second target discharge depth as the target depth difference.

[0049] In this embodiment, if the health of the energy storage battery is greater than the preset health, the difference between the first target discharge depth and the second target discharge depth is calculated to obtain the target depth difference.

[0050] As an optional implementation manner, step S107, based on the target depth difference, determines the target health of the energy storage battery, including: when the target depth difference is less than the preset target depth difference, determining the predicted health of the energy storage battery as the target health of the energy storage battery.

[0051] In this embodiment, if the target depth difference is less than the preset target depth difference, the predicted health of the energy storage battery is determined as the target health of the energy storage battery.

[0052] In the embodiment of the present invention, environmental information of the environment in which the energy storage battery is located is obtained; under the environmental information of the environment in which the energy storage battery is located, the change amount of the SOC value of the energy storage battery is determined; based on the change amount of the SOC value of the energy storage battery and the environmental factors of the environment in which the energy storage battery is located, the first target discharge depth of the energy storage battery is determined; the number of charges, the number of discharges, the charge depth, the discharge depth and the age information of the energy storage battery are obtained; based on the number of charges, the number of discharges, the charge depth, the discharge depth and the age information of the energy storage battery, the health of the energy storage battery and the second target discharge depth of the energy storage battery are predicted; when the health of the energy storage battery is greater than the preset health, the target depth difference between the first target discharge depth and the second target discharge depth is determined; based on the target depth difference, the target health of the energy storage battery is determined, so as to solve the technical problem that the prior art does not consider environmental factors when calculating the SOC of the battery, so that the calculated SOC is inaccurate, resulting in inaccurate determination of the health of the battery, and achieves the technical effect of considering environmental factors when calculating the SOC of the battery, improving the accuracy of the calculated SOC, and accurately determining the health of the battery.

[0053] Example 2

[0054] According to an embodiment of the present invention, an energy storage battery management system is also provided. It should be noted that the energy storage battery management system can be used to execute an energy storage battery management method in Example 1.

[0055] Figure 2 is a structural block diagram of an energy storage battery management system according to an embodiment of the present invention. Figure 2As shown, an energy storage battery management system may include: a first acquisition unit, a first determination unit, a second determination unit, a second acquisition unit, a prediction unit, a third determination unit and a fourth determination unit.

[0056] The first acquisition unit is used to acquire environmental information of the environment in which the energy storage battery is located.

[0057] The first determining unit is used to determine the change amount of the SOC value of the energy storage battery under the environmental information of the environment in which the energy storage battery is located.

[0058] The second determining unit is used to determine a first target discharge depth of the energy storage battery based on a change in the SOC value of the energy storage battery and an environmental factor of an environment in which the energy storage battery is located.

[0059] The second acquisition unit is used to acquire information about the number of charges, the number of discharges, the depth of charge, the depth of discharge and the age of the energy storage battery.

[0060] The prediction unit is used to predict the health of the energy storage battery and the second target discharge depth of the energy storage battery based on the number of charges, the number of discharges, the depth of charge, the depth of discharge and the age information of the energy storage battery.

[0061] The third determination unit is used to determine a target depth difference between the first target discharge depth and the second target discharge depth when the health of the energy storage battery is greater than a preset health.

[0062] The fourth determination unit is used to determine a target health of the energy storage battery based on the target depth difference.

[0063] Optionally, the first determination unit also includes: a first obtaining module, used to obtain a change Δ in the SOC value of the energy storage battery according to a first formula Δ=SOC1-SOC2 under environmental information of the environment in which the energy storage battery is located, wherein SOC1 is the value of the energy storage battery at the first moment when it is not discharged, and SOC2 is the value of the energy storage battery at the second moment when it is completely discharged.

[0064] Optionally, the second determination unit further includes: a second obtaining module, used to obtain a first target discharge depth φ1 of the energy storage battery according to a second formula φ1=λΔ, wherein Δ is a change in the SOC value of the energy storage battery, and λ is an environmental factor of the environment in which the energy storage battery is located.

[0065] Optionally, before obtaining the number of charges, discharges, charge depth, discharge depth and age information of the energy storage battery, the system also includes: a first recording unit, used to record the number of charges and discharges of the energy storage battery; an obtaining unit, used to obtain the discharge depth and charge depth of the energy storage battery based on the number of charges and discharges of the energy storage battery; and a second recording unit, used to record the age information of the energy storage battery based on the production date of the energy storage battery.

[0066] Optionally, the prediction unit further includes: a third obtaining module for obtaining Get the total charging depth φ of the energy storage battery 总充 , where n is the number of times the energy storage battery is charged, φ 充i is the charging depth corresponding to the i-th charging of the energy storage battery; according to the fourth formula Get the total discharge depth φ of the energy storage battery 总放 , where m is the number of discharges of the energy storage battery, and φdischarged is the discharge depth corresponding to the cth discharge of the energy storage battery; according to the fifth formula Get the average charging value φ of the energy storage battery 充平 According to the sixth formula Get the average discharge value of the energy storage battery φ 放平 According to the seventh formula The health H of the energy storage battery is obtained, wherein y is the age information.

[0067] Optionally, the prediction unit further includes: an eighth obtaining module for obtaining The second target discharge depth φ2 of the energy storage battery is obtained, where φtotal discharge is the total discharge depth of the energy storage battery. is the attenuation factor corresponding to the second target discharge depth.

[0068] Optionally, the third determination unit further includes: when the health of the energy storage battery is greater than a preset health, determining a difference between the first target discharge depth and the second target discharge depth as a target depth difference.

[0069] Optionally, the fourth determining unit further includes: when the target depth difference is less than a preset target depth difference, determining the predicted health of the energy storage battery as the target health of the energy storage battery.

[0070] In this embodiment, a first acquisition unit is used to acquire environmental information of the environment in which the energy storage battery is located; a first determination unit is used to determine the change in the SOC value of the energy storage battery under the environmental information of the environment in which the energy storage battery is located; a second determination unit is used to determine a first target discharge depth of the energy storage battery based on the change in the SOC value of the energy storage battery and the environmental factors of the environment in which the energy storage battery is located; a second acquisition unit is used to acquire information on the number of charges, the number of discharges, the depth of charge, the depth of discharge, and the age of the energy storage battery; and a prediction unit is used to predict the energy storage battery based on the number of charges, the number of discharges, the depth of charge, the depth of discharge, and the age of the energy storage battery. The battery health and the second target discharge depth of the energy storage battery; a third determining unit, used to determine the target depth difference between the first target discharge depth and the second target discharge depth when the health of the energy storage battery is greater than the preset health; a fourth determining unit, used to determine the target health of the energy storage battery based on the target depth difference, which solves the technical problem that the prior art does not consider environmental factors when calculating the SOC of the battery, making the calculated SOC inaccurate and resulting in inaccurate determination of the battery health, and achieves the technical effect of considering environmental factors when calculating the SOC of the battery, improving the accuracy of the calculated SOC, and accurately determining the battery health.

[0071] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0072] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0073] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0074] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0075] In addition, each functional unit in each embodiment of the present invention may be integrated into a first processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0076] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc., various media that can store program codes.

[0077] The above are only preferred embodiments of the present invention. It should be pointed out that ordinary technicians in this technical field can make appropriate improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for managing an energy storage battery, characterized in that: include: Obtain environmental information of the environment in which the energy storage battery is located; Determine the change in the SOC value of the energy storage battery under the environmental information of the environment in which the energy storage battery is located; Determining a first target depth of discharge of the energy storage battery based on a change in the SOC value of the energy storage battery and an environmental factor of an environment in which the energy storage battery is located; Obtaining information on the number of charges, number of discharges, charge depth, discharge depth and age of the energy storage battery; Predicting the health of the energy storage battery and a second target discharge depth of the energy storage battery based on the number of charges, the number of discharges, the charge depth, the discharge depth, and the age information of the energy storage battery; When the health of the energy storage battery is greater than a preset health, determining a target depth difference between the first target discharge depth and the second target discharge depth; Based on the target depth difference, a target health of the energy storage battery is determined.

2. The energy storage battery management method according to claim 1, characterized in that: The step of determining the change in the SOC value of the energy storage battery under the environmental information of the environment in which the energy storage battery is located includes: Under the environmental information of the environment in which the energy storage battery is located, according to the first formula Δ=SOC1-SOC2, the change Δ of the SOC value of the energy storage battery is obtained, wherein SOC1 is the value of the energy storage battery at the first moment when it is not discharged, and SOC2 is the value of the energy storage battery at the second moment when it is discharged.

3. The energy storage battery management method according to claim 1, characterized in that: The determining, based on the change in the SOC value of the energy storage battery and the environmental factors of the environment in which the energy storage battery is located, a first target depth of discharge of the energy storage battery, comprises: According to the second formula φ1=λΔ, the first target discharge depth φ1 of the energy storage battery is obtained, wherein Δ is the change in the SOC value of the energy storage battery, and λ is the environmental factor of the environment in which the energy storage battery is located.

4. The energy storage battery management method according to claim 1, characterized in that: Before obtaining the information of the number of charges, the number of discharges, the depth of charge, the depth of discharge and the age of the energy storage battery, the method further includes: Recording the number of times the energy storage battery is charged and discharged; Based on the number of times the energy storage battery is charged and discharged, a discharge depth and a charge depth of the energy storage battery are obtained; The age information of the energy storage battery is recorded based on the production date of the energy storage battery.

5. The energy storage battery management method according to claim 1, characterized in that: Predicting the health of the energy storage battery based on the number of charges, the number of discharges, the charge depth, the discharge depth, and the age information of the energy storage battery includes: According to the third formula Get the total charging depth φ of the energy storage battery 总充 , where n is the number of times the energy storage battery is charged, φ 充i The charging depth corresponding to the i-th charging of the energy storage battery; According to the fourth formula Get the total discharge depth φ of the energy storage battery 总放 , where m is the number of discharges of the energy storage battery, and φdischargec is the discharge depth corresponding to the cth discharge of the energy storage battery; According to the fifth formula Get the average charging value φ of the energy storage battery 充平 ; According to the sixth formula Get the average discharge value of the energy storage battery φ 放平 ; According to the seventh formula The health H of the energy storage battery is obtained, wherein y is the age information.

6. The energy storage battery management method according to claim 5, characterized in that: Predicting a second target depth of discharge of the energy storage battery includes: According to the eighth formula Obtaining a second target discharge depth φ2 of the energy storage battery, is the attenuation factor corresponding to the second target discharge depth.

7. The energy storage battery management method according to claim 1, characterized in that: When the health of the energy storage battery is greater than a preset health, determining a target depth difference between the first target discharge depth and the second target discharge depth includes: When the health of the energy storage battery is greater than a preset health, the difference between the first target discharge depth and the second target discharge depth is determined as the target depth difference.

8. The energy storage battery management method according to claim 1, characterized in that: The determining the target health of the energy storage battery based on the target depth difference includes: When the target depth difference is less than a preset target depth difference, the predicted health of the energy storage battery is determined as the target health of the energy storage battery.

9. An energy storage battery management system, characterized in that: include: A first acquisition unit, used to acquire environmental information of the environment in which the energy storage battery is located; A first determining unit, configured to determine a change in the SOC value of the energy storage battery under environmental information of an environment in which the energy storage battery is located; A second determining unit, configured to determine a first target depth of discharge of the energy storage battery based on a change in the SOC value of the energy storage battery and an environmental factor of an environment in which the energy storage battery is located; A second acquisition unit is used to acquire information about the number of charges, the number of discharges, the depth of charge, the depth of discharge and the age of the energy storage battery; a prediction unit, configured to predict the health of the energy storage battery and a second target discharge depth of the energy storage battery based on the number of charges, the number of discharges, the charge depth, the discharge depth, and the age information of the energy storage battery; a third determining unit, configured to determine a target depth difference between the first target discharge depth and the second target discharge depth when the health of the energy storage battery is greater than a preset health; A fourth determining unit is used to determine a target health of the energy storage battery based on the target depth difference.

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