Self-adaptive charging method

Abstract

The invention provides a self-adaptive charging method, and relates to the technical field of charging, and the method comprises the steps: obtaining the current electric quantity of energy storage equipment, and determining a corresponding preset charging rate and a preset target electric quantity according to the current electric quantity; charging the energy storage equipment at a preset charging rate, and obtaining charging parameters in the charging process; acquiring historical health data of the energy storage equipment, and determining a health coefficient according to the historical health data; obtaining a preset parameter, and adjusting the preset parameter according to the health coefficient to obtain a target parameter; acquiring a historical charging parameter, and determining a correction coefficient according to the target parameter, the historical charging parameter and the charging parameter; adjusting a preset charging rate according to the correction coefficient to obtain a target charging rate, and adjusting a preset target electric quantity according to the correction coefficient to obtain a target electric quantity; and charging the energy storage equipment to the preset target electric quantity at the target charging rate, or charging the energy storage equipment to the target electric quantity at the preset charging rate. The service life of the energy storage equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of charging technology, and in particular to an adaptive charging method. Background Art

[0002] The existing charging methods mainly include: distributed charging, pulse charging or pulse distributed charging. These three charging methods have low charging efficiency and slow charging speed. Summary of the invention

[0003] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art and provide an adaptive charging method. The present invention provides the following technical solutions:

[0004] An adaptive charging method, the method comprising: obtaining a current power of an energy storage device, determining a corresponding preset charging rate and a preset target power according to the current power; charging the energy storage device at the preset charging rate, and obtaining charging parameters during the charging process; obtaining historical health data of the energy storage device, and determining a health factor according to the historical health data; obtaining preset parameters, and adjusting the preset parameters according to the health factor to obtain target parameters; obtaining historical charging parameters, and determining a correction factor according to the target parameters, the historical charging parameters, and the charging parameters; adjusting the preset charging rate according to the correction factor to obtain a target charging rate, and adjusting the preset target power according to the correction factor to obtain a target power; charging the energy storage device to the preset target power at the target charging rate, or charging the energy storage device to the target power at the preset charging rate.

[0005] In one embodiment, the historical health data includes: a plurality of historical health values, and determining the health coefficient based on the historical health data includes: determining the historical health decline rate based on the plurality of historical health values; and determining the health coefficient based on the historical health decline rate.

[0006] In one embodiment, the preset parameters include: a first preset parameter, a second preset parameter or a third preset parameter, the target parameters include: a first target parameter, a second target parameter or a third target parameter, and adjusting the preset parameters according to the health coefficient to obtain the target parameters includes:

[0007] N i =n i ×K SOH

[0008] Among them, N i represents the i-th target parameter, n i represents the i-th preset parameter, K SOH Represents the health coefficient, 1≤i≤3.

[0009] In one embodiment, the historical charging parameters include: historical polarization voltage changes, the charging parameters include: polarization voltage changes, the correction coefficient includes: a first correction coefficient, and the correction coefficient is determined according to the target parameter, the historical charging parameters and the charging parameters, including:

[0010] The first correction coefficient is determined according to the first target parameter, the historical polarization voltage change and the polarization voltage change, and the calculation formula is:

[0011]

[0012] Wherein, K1 represents the first correction coefficient, E P represents the polarization voltage change, E' P represents the historical polarization voltage change, and N1 represents the first target parameter.

[0013] In one embodiment, the historical charging parameter includes: a historical relaxation voltage change, the charging parameter includes: a relaxation voltage change, the correction coefficient includes: a second correction coefficient, and the correction coefficient is determined according to the target parameter, the historical charging parameter and the charging parameter, including: determining the second correction coefficient according to the first target parameter, the historical relaxation voltage change and the relaxation voltage change, and the calculation formula is:

[0014]

[0015] Wherein, K2 represents the second correction coefficient, E d represents the relaxation voltage change, E' d represents the historical relaxation voltage change, and N2 represents the second target parameter.

[0016] In one embodiment, the historical charging parameter includes: a historical temperature change rate, the charging parameter includes: a temperature change rate, the correction coefficient includes: a third correction coefficient, and the determining the correction coefficient according to the target parameter, the historical charging parameter and the charging parameter includes: determining the third correction coefficient according to the third target parameter, the historical temperature change rate and the temperature change rate, and the calculation formula is:

[0017]

[0018] Wherein, K3 represents the third correction coefficient, dt represents the temperature change rate, dt' represents the historical temperature change rate, and N3 represents the third target parameter.

[0019] In one embodiment, the step of adjusting the preset charging rate according to the correction coefficient to obtain the target charging rate includes: adjusting the preset charging rate according to the first correction coefficient and the third correction coefficient to obtain the target charging rate, and the calculation formula is:

[0020]

[0021] Alternatively, the preset charging rate is adjusted according to the second correction coefficient and the third correction coefficient to obtain the target charging rate, and the calculation formula is:

[0022]

[0023] Wherein, A represents the target charging rate, and a represents the preset charging rate.

[0024] In one embodiment, the step of adjusting the preset target power according to the correction coefficient to obtain the target power includes: adjusting the preset target power according to the first correction coefficient and the third correction coefficient to obtain the target power, and the calculation formula is:

[0025]

[0026] Alternatively, the preset target power is adjusted according to the second correction coefficient and the third correction coefficient to obtain the target power, and the calculation formula is:

[0027]

[0028] Among them, Q represents the target power, and q represents the preset target power.

[0029] In one embodiment, the method further includes: acquiring historical lithium precipitation data, and determining a lithium precipitation coefficient according to the lithium precipitation data.

[0030] In one embodiment, before determining the correction coefficient according to the target parameter, the historical charging parameter and the charging parameter, the method further includes: adjusting the target parameter according to the lithium deposition coefficient.

[0031] The present invention provides an adaptive charging method, which obtains the current power of an energy storage device, determines the corresponding preset charging rate and preset target power according to the current power; charges the energy storage device at the preset charging rate, and obtains charging parameters during the charging process; obtains historical health data of the energy storage device, and determines a health factor according to the historical health data; obtains preset parameters, and adjusts the preset parameters according to the health factor to obtain target parameters; obtains historical charging parameters, and determines correction factors according to the target parameters, the historical charging parameters and the charging parameters; adjusts the preset charging rate according to the correction factor to obtain a target charging rate, and adjusts the preset target power according to the correction factor to obtain a target power; charges the energy storage device to the preset target power at the target charging rate, or charges the energy storage device to the target power at the preset charging rate, thereby realizing an adaptive adjustment charging scheme, avoiding adverse effects caused by lithium plating of the energy storage device while ensuring an optimal charging speed, and also considering the health of the energy storage device, thereby improving the service life of the energy storage device. In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram of a process of an adaptive charging method provided by an embodiment of the present invention is shown;

[0034] Figure 2 A schematic diagram of the structure of an adaptive charging system provided by an embodiment of the present invention is shown;

[0035] Figure 3 A schematic structural diagram of an electronic device provided by an embodiment of the present invention is shown.

[0036] Description of main component symbols:

[0037] 200 - adaptive charging system; 210 - first acquisition module; 220 - second acquisition module; 230 - third acquisition module; 240 - first adjustment module; 250 - determination module; 260 - second adjustment module; 270 - charging module; 300 - electronic device; 301 - transceiver; 302 - processor; 303 - memory. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of the template are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] Example 1

[0042] Common energy storage device charging methods in the prior art include: distributed charging, pulse charging or pulse distributed charging. All three charging methods have low charging efficiency. As the energy storage device ages, lithium deposition will occur in the energy storage device. At this time, if the energy storage device is still charged in the same charging method, it is easy to accelerate the aging of the energy storage device and even cause safety accidents. For this, please refer to Figure 1 , an embodiment of the present application provides an adaptive charging method, including: steps S110 to S170.

[0043] Step S110, obtaining the current power of the energy storage device, and determining the corresponding preset charging rate and preset target power according to the current power.

[0044] It can be understood that according to the preset charging scheme, the preset charging rate and preset target power corresponding to the energy storage device at different power levels can be determined. For example, if the preset charging scheme is: 5C charging to 30% SOC, 4C charging to 50% SOC, 3C charging to 70% SOC, 2C charging to 90% SOC, 1C full and using constant voltage charging, then when the current power is less than 30% SOC, the preset charging rate is determined to be 5C, and the preset target power is 30% SOC. When the current power is greater than 30% SOC and less than 50% SOC, the preset charging rate is determined to be 4C, and the preset target power is 50% SOC, and so on.

[0045] Step S120, charging the energy storage device at the preset charging rate, and obtaining charging parameters during the charging process.

[0046] In this embodiment, according to the current power of the energy storage device, the preset charging rate and the preset target power corresponding to the energy storage device are determined, and the energy storage device is charged at the preset charging rate. During the charging process, the charging parameters corresponding to the charging process are obtained, specifically including: the polarization voltage change caused by the pulse, the relaxation voltage change caused by relaxation, and the current temperature change rate of the energy storage device.

[0047] Furthermore, the preset charging rate is adjusted according to the polarization voltage change caused by the pulse, the relaxation voltage change caused by relaxation, or the current temperature change rate of the energy storage device to obtain the target charging rate; or the preset target power is adjusted to obtain the target power, thereby realizing an adaptive charging energy storage device.

[0048] Step S130, obtaining historical health data of the energy storage device, and determining a health coefficient according to the historical health data.

[0049] In this embodiment, the historical health data includes: the health status of the energy storage device corresponding to the end of the previous M charging processes of the energy storage device. By calling multiple historical health data from the battery management system, the downward trend of the health status of the energy storage device can be determined, and the health coefficient is determined according to the downward trend of the health status of the energy storage device. For example, according to the health status corresponding to the end of the previous 10 charging processes of the energy storage device, if the historical health status decline value is greater than 0.1%, the health coefficient is determined to be 0.99, and if the historical health status decline value is less than 0.05%, the health coefficient is determined to be 1.01.

[0050] It should be noted that the decline value of the historical health status is inversely proportional to the size of the health coefficient, that is, the greater the decline value of the historical health status, the smaller the health coefficient, and the smaller the decline value of the historical health status, the larger the health coefficient. Specifically, the determination of the health coefficient can be selected according to actual conditions.

[0051] In one embodiment, the historical health data includes: a plurality of historical health values, and determining the health coefficient based on the historical health data includes: determining the historical health decline rate based on the plurality of historical health values; and determining the health coefficient based on the historical health decline rate.

[0052] In this embodiment, the health coefficient is related to the adjustment of the preset charging rate or the adjustment of the preset target power. It can be understood that when the historical health decline rate is large, the health coefficient can be appropriately increased, and when the historical health decline rate is small, the health coefficient can be appropriately reduced.

[0053] Step S140, obtaining preset parameters, and adjusting the preset parameters according to the health coefficient to obtain target parameters.

[0054] In this embodiment, the preset parameters include: a first preset parameter, a second preset parameter and a third preset parameter, and adjusting the preset parameters according to the health coefficient includes: iterating the preset parameters according to the health coefficient.

[0055] In one embodiment, the preset parameters include: a first preset parameter, a second preset parameter or a third preset parameter, the target parameters include: a first target parameter, a second target parameter or a third target parameter, and adjusting the preset parameters according to the health coefficient to obtain the target parameters includes:

[0056] N i =n i ×K SOH

[0057] Among them, N i represents the i-th target parameter, n i represents the i-th preset parameter, K SOH Represents the health coefficient, 1≤i≤3.

[0058] In this embodiment, the initial values ​​of the first preset parameter, the second preset parameter and the third preset parameter are all set to 1, and iteration is performed according to the health coefficient. The first preset parameter after iteration is determined as the first target parameter, the second preset parameter after iteration is determined as the second target parameter, and the third preset parameter after iteration is determined as the third target parameter.

[0059] Step S150, obtaining historical charging parameters, and determining a correction coefficient according to the target parameter, the historical charging parameter and the charging parameter.

[0060] In this embodiment, the historical charging parameters include: historical polarization voltage changes, historical relaxation voltage changes and historical temperature change rate. The historical relaxation voltage changes are used to determine the first correction coefficient, the historical relaxation voltage changes are used to determine the second correction coefficient, and the historical temperature change rate is used to determine the third correction coefficient.

[0061] In one embodiment, the historical charging parameters include: historical polarization voltage changes, the charging parameters include: polarization voltage changes, the correction coefficient includes: a first correction coefficient, and the correction coefficient is determined according to the target parameter, the historical charging parameters and the charging parameters, including:

[0062] The first correction coefficient is determined according to the first target parameter, the historical polarization voltage change and the polarization voltage change, and the calculation formula is:

[0063]

[0064] Wherein, K1 represents the first correction coefficient, E P represents the polarization voltage change, E' P represents the historical polarization voltage change, and N1 represents the first target parameter.

[0065] In this embodiment, the historical polarization voltage change includes the polarization voltage change caused by the last charging pulse, and the first correction coefficient is determined based on the polarization voltage change caused by the pulse during this charging process, the polarization voltage change caused by the last charging pulse, and the first target parameter.

[0066] It can be understood that when the preset charging scheme is a distributed charging method or a pulse charging method, the polarization voltage will change due to the pulse during the charging process. The first correction coefficient can be determined based on the polarization voltage change, and then the preset charging scheme is adjusted according to the first correction coefficient, specifically including adjusting the preset charging rate and the preset target power, and charging the energy storage device according to the adjusted charging scheme.

[0067] In one embodiment, the historical charging parameter includes: a historical relaxation voltage change, the charging parameter includes: a relaxation voltage change, the correction coefficient includes: a second correction coefficient, and determining the correction coefficient according to the target parameter, the historical charging parameter and the charging parameter includes:

[0068] The second correction coefficient is determined according to the first target parameter, the historical relaxation voltage change and the relaxation voltage change, and the calculation formula is:

[0069]

[0070] Wherein, K2 represents the second correction coefficient, E d represents the relaxation voltage change, E' d represents the historical relaxation voltage change, and N2 represents the second target parameter.

[0071] In this embodiment, the historical relaxation voltage change includes the relaxation voltage change caused by the last relaxation, and the second correction coefficient is determined according to the depolarization caused by relaxation during this charging process, the relaxation voltage change caused by the last relaxation, and the second target parameter.

[0072] It can be understood that when the preset charging scheme is a distributed charging prevention, a pulse charging method or a pulse distributed charging method, a second correction parameter can be determined according to the relaxation voltage generated during the charging process, and then the preset charging scheme is adjusted according to the second correction parameter, and the energy storage device is charged according to the adjusted charging scheme.

[0073] In one embodiment, the historical charging parameter includes: a historical temperature change rate, the charging parameter includes: a temperature change rate, the correction coefficient includes: a third correction coefficient, and determining the correction coefficient according to the target parameter, the historical charging parameter and the charging parameter includes:

[0074] The third correction coefficient is determined according to the third target parameter, the historical temperature change rate and the temperature change rate, and the calculation formula is:

[0075]

[0076] Wherein, K3 represents the third correction coefficient, dt represents the temperature change rate, dt' represents the historical temperature change rate, and N3 represents the third target parameter.

[0077] In this embodiment, the historical temperature change rate includes the temperature change rate corresponding to the energy storage device during the last charging process, and the third correction coefficient is determined according to the temperature change rate during this charging process, the temperature change rate during the last charging process and the third target parameter.

[0078] It can be understood that the third correction coefficient is adjusted according to the historical temperature change rate and the temperature change rate, so that the preset charging scheme is subsequently adjusted according to the third correction coefficient.

[0079] Step S160, adjusting the preset charging rate according to the correction coefficient to obtain a target charging rate, and adjusting the preset target power according to the correction coefficient to obtain a target power.

[0080] In this embodiment, by determining the target charging rate and the target power, the charging method is adaptively adjusted based on the preset charging plan, thereby achieving the premise of ensuring the optimal charging speed while avoiding adverse effects on the service life of the energy storage device and avoiding safety accidents such as fire.

[0081] In one embodiment, adjusting the preset charging rate according to the correction coefficient to obtain the target charging rate includes: adjusting the preset charging rate according to the first correction coefficient and the third correction coefficient to obtain the target charging rate, and the calculation formula is:

[0082]

[0083] It can be understood that the first correction coefficient is determined according to the change in polarization voltage, and the third correction coefficient is determined according to the temperature change rate. The determination of the first correction coefficient and the third correction coefficient involves the health data of the energy storage device. Therefore, in the process of adjusting the preset charging rate according to the first correction coefficient and the third correction coefficient to obtain the target charging rate, not only the health of the energy storage device is taken into account, but also the polarization voltage change and temperature change rate of the energy storage device are taken into account.

[0084] Alternatively, the preset charging rate is determined according to the second correction coefficient and the third correction coefficient, and the calculation formula is:

[0085]

[0086] Among them, A represents the target charging rate, a represents the preset charging rate, K1 represents the first correction coefficient, K2 represents the second correction coefficient, and K3 represents the third correction coefficient.

[0087] Similarly, in the process of adjusting the preset charging rate according to the second correction coefficient and the third correction coefficient to obtain the target charging rate, not only the health of the energy storage device is taken into account, but also the relaxation voltage change and temperature change rate of the energy storage device are taken into account.

[0088] It can be understood that the first correction coefficient is determined according to the change in polarization voltage, and the second correction coefficient is determined according to the change in relaxation voltage, and either one of them can be selected.

[0089] In another embodiment, the preset charging rate may also be adjusted directly according to the first correction coefficient, and the calculation formula is: Alternatively, the preset charging rate is adjusted directly according to the second correction coefficient, and the calculation formula is: Or directly adjust the preset charging rate according to the third correction coefficient, the calculation formula is:

[0090] In one embodiment, the step of adjusting the preset target power according to the correction coefficient to obtain the target power includes: adjusting the preset target power according to the first correction coefficient and the third correction coefficient to obtain the target power, and the calculation formula is:

[0091]

[0092] Alternatively, the preset target power is adjusted according to the second correction coefficient and the third correction coefficient to obtain the target power, and the calculation formula is:

[0093]

[0094] Among them, Q represents the target power, q represents the preset target power, K1 represents the first correction coefficient, K2 represents the second correction coefficient, and K3 represents the third correction coefficient.

[0095] In this embodiment, the preset target power is adjusted according to the correction coefficient. The adjustment can be made based on a first correction coefficient determined by the change in polarization voltage combined with a third correction coefficient determined by the temperature change rate, or based on a second correction coefficient determined by the change in relaxation voltage combined with a third correction coefficient determined by the temperature change rate. Specifically, different adjustment bases can be selected according to actual needs.

[0096] In another embodiment, the preset target power may also be adjusted directly according to the first correction coefficient, and the calculation formula is: Alternatively, the preset target power is adjusted directly according to the second correction coefficient, and the calculation formula is: Or directly adjust the preset target power according to the third correction coefficient, the calculation formula is:

[0097] Step S170, charging the energy storage device to the preset target power at the target charging rate, or charging the energy storage device to the target power at the preset charging rate.

[0098] In this embodiment, based on the preset charging scheme, the adaptively adjusted charging methods include the following two: charging the energy storage device to the preset target power at the target charging rate, or charging the energy storage device to the target power at the preset charging rate, which can be selected according to actual conditions.

[0099] In one embodiment, the method further includes: acquiring historical lithium precipitation data, and determining a lithium precipitation coefficient according to the lithium precipitation data.

[0100] In this embodiment, the historical lithium deposition data includes the lithium deposition conditions during the previous M charging processes, and the size of the lithium deposition coefficient is negatively correlated with the number of times the lithium deposition signal appears during the previous M charging processes. Specifically, the more times the lithium deposition signal appears, the smaller the lithium deposition coefficient, and the smaller the number of times the lithium deposition signal appears, the larger the lithium deposition coefficient. Thus, the target coefficient is further adjusted according to the lithium deposition coefficient as described below, that is, in the process of adaptively adjusting the charging method, the lithium deposition condition of the energy storage device is also taken into account.

[0101] In one embodiment, before determining the correction coefficient according to the target parameter, the historical charging parameter and the charging parameter, the method further includes: adjusting the target parameter according to the lithium deposition coefficient.

[0102] It is understandable that when lithium deposition occurs in the energy storage device, if the energy storage device is still charged with the preset charging plan, safety accidents such as fire are prone to occur. Therefore, during the charging process, the target parameters can be further adjusted in combination with the lithium deposition of the energy storage device.

[0103] The embodiment of the present invention provides an adaptive charging method, which obtains the current power of an energy storage device, determines the corresponding preset charging rate and preset target power according to the current power; charges the energy storage device at the preset charging rate, and obtains charging parameters during the charging process; obtains historical health data of the energy storage device, and determines a health factor according to the historical health data; obtains preset parameters, and adjusts the preset parameters according to the health factor to obtain target parameters; obtains historical charging parameters, and determines correction coefficients according to the target parameters, the historical charging parameters, and the charging parameters; adjusts the preset charging rate according to the correction coefficient to obtain a target charging rate, and adjusts the preset target power according to the correction coefficient to obtain a target power; charges the energy storage device to the preset target power at the target charging rate, or charges the energy storage device to the target power at the preset charging rate, thereby realizing an adaptive adjustment of the charging scheme, avoiding the adverse effects caused by lithium plating of the energy storage device while ensuring the optimal charging speed, and also considering the health of the energy storage device, thereby improving the service life of the energy storage device.

[0104] Example 2

[0105] Also, see Figure 2 The present invention further provides an adaptive charging system 200, comprising:

[0106] The first acquisition module 210 is used to acquire the current power of the energy storage device, and determine the corresponding preset charging rate and preset target power according to the current power.

[0107] The second acquisition module 220 is used to charge the energy storage device at the preset charging rate and acquire charging parameters during the charging process.

[0108] The third acquisition module 230 is used to acquire the historical health data of the energy storage device and determine the health coefficient according to the historical health data.

[0109] The first adjustment module 240 is used to obtain preset parameters and adjust the preset parameters according to the health coefficient to obtain target parameters.

[0110] The determination module 250 is used to obtain historical charging parameters and determine a correction coefficient according to the target parameter, the historical charging parameter and the charging parameter.

[0111] A second adjustment module 260 is used to adjust the preset charging rate according to the correction coefficient to obtain a target charging rate, and adjust the preset target power according to the correction coefficient to obtain a target power;

[0112] The charging module 270 is used to charge the energy storage device to the preset target power at the target charging rate, or to charge the energy storage device to the target power at the preset charging rate.

[0113] The adaptive charging system 200 described in the embodiment of the present invention is used to implement the adaptive charging method described in the above method embodiment 1, and will not be described again here to avoid repetition.

[0114] The adaptive charging system provided by the embodiment of the present invention obtains the current power of the energy storage device through the first acquisition module, and determines the corresponding preset charging rate and preset target power according to the current power; the second acquisition module charges the energy storage device at the preset charging rate and obtains the charging parameters during the charging process; the third acquisition module obtains the historical health data of the energy storage device and determines the health coefficient according to the historical health data; the first adjustment module obtains the preset parameters, and adjusts the preset parameters according to the health coefficient to obtain the target parameters; the determination module obtains the historical charging parameters, and determines the correction coefficient according to the target parameters, the historical charging parameters and the charging parameters; the second adjustment module adjusts the preset charging rate according to the correction coefficient to obtain the target charging rate, and adjusts the preset target power according to the correction coefficient to obtain the target power; the charging module charges the energy storage device to the preset target power at the target charging rate, or charges the energy storage device to the target power at the preset charging rate, thereby realizing the adaptive adjustment of the charging scheme, avoiding the adverse effects caused by lithium plating of the energy storage device while ensuring the optimal charging speed, and also considering the health of the energy storage device, thereby improving the service life of the energy storage device.

[0115] Example 3

[0116] In addition, an embodiment of the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program runs on the processor, the adaptive charging method provided in Embodiment 1 is executed.

[0117] For details, see Figure 3The electronic device 300 includes: a transceiver 301, a bus interface and a processor 302, wherein the processor 302 is used to obtain the current power of the energy storage device, determine the corresponding preset charging rate and preset target power according to the current power; charge the energy storage device at the preset charging rate, and obtain charging parameters during the charging process; obtain historical health data of the energy storage device, and determine a health factor according to the historical health data; obtain preset parameters, and adjust the preset parameters according to the health factor to obtain target parameters; obtain historical charging parameters, and determine a correction coefficient according to the target parameters, the historical charging parameters and the charging parameters; adjust the preset charging rate according to the correction coefficient to obtain the target charging rate, and adjust the preset target power according to the correction coefficient to obtain the target power; charge the energy storage device to the preset target power at the target charging rate, or charge the energy storage device to the target power at the preset charging rate.

[0118] In the embodiment of the present invention, the electronic device 300 further includes a memory 303. Figure 3 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 302 and memory represented by memory 303. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 301 may be a plurality of components, i.e., including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The processor 302 is responsible for managing the bus architecture and general processing, and the memory 303 may store data used by the processor 302 when performing operations.

[0119] The electronic device 300 provided in the embodiment of the present invention can execute the adaptive charging method provided in the above method embodiment 1, which will not be described again to avoid repetition.

[0120] Example 4

[0121] In addition, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the adaptive charging method provided in Embodiment 1 is implemented.

[0122] In this embodiment, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0123] The computer-readable storage medium provided in this embodiment can implement the adaptive charging method provided in Embodiment 1, and will not be described again here to avoid repetition.

[0124] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0125] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0126] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An adaptive charging method, characterized in that: The method comprises: Obtaining the current power of the energy storage device, and determining the corresponding preset charging rate and preset target power according to the current power; Charging the energy storage device at the preset charging rate and obtaining charging parameters during the charging process; Acquire historical health data of the energy storage device, and determine a health coefficient according to the historical health data; Acquire preset parameters, and adjust the preset parameters according to the health coefficient to obtain target parameters; Acquire historical charging parameters, and determine a correction coefficient according to the target parameter, the historical charging parameter and the charging parameter; The preset charging rate is adjusted according to the correction coefficient to obtain a target charging rate, and the preset target power is adjusted according to the correction coefficient to obtain a target power; The energy storage device is charged to the preset target power at the target charging rate, or the energy storage device is charged to the target power at the preset charging rate.

2. The adaptive charging method according to claim 1, characterized in that: The historical health data includes: a plurality of historical health values, and determining the health coefficient according to the historical health data includes: Determining the historical health decline rate according to the plurality of historical health values; The health coefficient is determined according to the historical health decline rate.

3. The adaptive charging method according to claim 2, characterized in that: The preset parameters include: a first preset parameter, a second preset parameter or a third preset parameter, the target parameters include: a first target parameter, a second target parameter or a third target parameter, and the preset parameters are adjusted according to the health coefficient to obtain the target parameters, including: N i =n i ×K SOH Among them, N i represents the i-th target parameter, n i represents the i-th preset parameter, K SOH Represents the health coefficient, 1≤i≤3.

4. The adaptive charging method according to claim 3, characterized in that: The historical charging parameters include: historical polarization voltage changes, the charging parameters include: polarization voltage changes, the correction coefficient includes: a first correction coefficient, and the correction coefficient is determined according to the target parameter, the historical charging parameters and the charging parameters, including: The first correction coefficient is determined according to the first target parameter, the historical polarization voltage change and the polarization voltage change, and the calculation formula is: Wherein, K1 represents the first correction coefficient, E P represents the polarization voltage change, E' P represents the historical polarization voltage change, and N1 represents the first target parameter.

5. The adaptive charging method according to claim 4, characterized in that: The historical charging parameter includes: a historical relaxation voltage change, the charging parameter includes: a relaxation voltage change, the correction coefficient includes: a second correction coefficient, and the correction coefficient is determined according to the target parameter, the historical charging parameter and the charging parameter, including: The second correction coefficient is determined according to the first target parameter, the historical relaxation voltage change and the relaxation voltage change, and the calculation formula is: Wherein, K2 represents the second correction coefficient, E d represents the relaxation voltage change, E' d represents the historical relaxation voltage change, and N2 represents the second target parameter.

6. The adaptive charging method according to claim 5, characterized in that: The historical charging parameter includes: a historical temperature change rate, the charging parameter includes: a temperature change rate, the correction coefficient includes: a third correction coefficient, and the correction coefficient is determined according to the target parameter, the historical charging parameter and the charging parameter, including: The third correction coefficient is determined according to the third target parameter, the historical temperature change rate and the temperature change rate, and the calculation formula is: Wherein, K3 represents the third correction coefficient, dt represents the temperature change rate, dt' represents the historical temperature change rate, and N3 represents the third target parameter.

7. The adaptive charging method according to claim 6, characterized in that: The step of adjusting the preset charging rate according to the correction coefficient to obtain a target charging rate includes: The preset charging rate is adjusted according to the first correction coefficient and the third correction coefficient to obtain the target charging rate, and the calculation formula is: Alternatively, the preset charging rate is adjusted according to the second correction coefficient and the third correction coefficient to obtain the target charging rate, and the calculation formula is: Wherein, A represents the target charging rate, and a represents the preset charging rate.

8. The adaptive charging method according to claim 6, characterized in that: The step of adjusting the preset target power according to the correction coefficient to obtain the target power includes: The preset target power is adjusted according to the first correction coefficient and the third correction coefficient to obtain the target power, and the calculation formula is: Alternatively, the preset target power is adjusted according to the second correction coefficient and the third correction coefficient to obtain the target power, and the calculation formula is: Among them, Q represents the target power, and q represents the preset target power.

9. The adaptive charging method according to any one of claims 1 to 8, characterized in that: The method further comprises: Acquire historical lithium precipitation data, and determine the lithium precipitation coefficient according to the lithium precipitation data.

10. The adaptive charging method according to claim 9, characterized in that: Before determining the correction coefficient according to the target parameter, the historical charging parameter and the charging parameter, the method further includes: The target parameter is adjusted according to the lithium deposition coefficient.

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