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CN-122017564-A - Battery use state prediction method, device, equipment and medium

CN122017564ACN 122017564 ACN122017564 ACN 122017564ACN-122017564-A

Abstract

The invention relates to the technical field of battery management and discloses a battery use state prediction method, a device, equipment and a medium, wherein the method comprises the steps of obtaining an initial charge and discharge strategy and a battery use position set by a user; the method comprises the steps of determining the temperature of each preset time period in a set period according to the battery use position, determining each use condition in the set period and the proportion of the use time of each use condition in the set period according to an initial charge-discharge strategy and the temperature of each preset time period, and calculating to obtain the residual service life according to each use condition in the set period, the proportion of the use time of each use condition in the set period and the actual measurement or simulation years of the battery under different pre-acquired use conditions. The invention can calculate the remaining service life of the battery under the initial charge-discharge strategy set by the user, can dynamically evaluate the battery according to the actual service condition of the battery, and has more accurate prediction result.

Inventors

  • GAO HUIMIN
  • ZHOU BIN
  • YANG JIN

Assignees

  • 固德威技术股份有限公司

Dates

Publication Date
20260512
Application Date
20251230

Claims (10)

  1. 1. A battery usage state prediction method, the method comprising: acquiring an initial charge-discharge strategy and a battery use position set by a user; Determining the temperature of each preset time period in the set period according to the battery use position; determining each use condition in the set period and the proportion of the use time of each use condition in the set period according to the initial charge-discharge strategy and the temperature of each preset time period; And calculating according to each use condition in the set period, the proportion of the use time of each use condition to the set period and the actual measurement or simulation years of the battery under different use conditions acquired in advance to obtain the residual use period.
  2. 2. The method of claim 1, wherein the remaining life is calculated by the formula: In the formula, In order to keep the service life of the device in the rest, The use time for the nth use condition is the proportion of the set period, Is the measured or simulated age of the battery under the nth service condition.
  3. 3. The method according to claim 1, characterized by comprising, after determining each usage condition and a proportion of a usage time of each usage condition in the set period to the set period according to the initial charge-discharge strategy and the temperature of each preset period,: And calculating to obtain the total energy of the residual discharge according to each use condition in the set period, the proportion of the use time of each use condition to the set period and the actually measured or simulated residual discharge electric quantity of the battery under different use conditions, which are acquired in advance.
  4. 4. A method according to claim 3, wherein the calculation formula for calculating the total energy of the remaining discharge is: In the formula, For the total energy of the remaining discharge, The use time for the nth use condition is the proportion of the set period, The measured or simulated residual discharge capacity of the battery under the nth using condition is used.
  5. 5. The method of claim 4, wherein after calculating the remaining useful life comprises: After one set period, obtaining the current state of health of the battery according to the total energy of residual discharge when the last set period is finished; according to the charge and discharge strategy input by the user again and the actual measurement or simulation years of the battery under different use conditions under the current health state of the battery, calculating to obtain the residual service life, and obtaining the current optimal use condition for maximizing the residual service life; And outputting the current optimal use condition and the corresponding residual service life.
  6. 6. The method of claim 5, wherein obtaining the current state of health of the battery based on the total energy of remaining discharge at the end of the last set period comprises: dividing the total energy of the residual discharge at the end of the last set period by the maximum total energy of the discharge of the battery to obtain the current state of health of the battery.
  7. 7. The method of claim 1, wherein the initial charge-discharge strategy comprises using a rate, a depth of discharge, and a cell differential pressure.
  8. 8. A battery usage state prediction apparatus, characterized by comprising: the parameter acquisition module is used for acquiring an initial charge-discharge strategy and a battery use position set by a user; The temperature determining module is used for determining the temperature of each preset time period in the set period according to the battery use position; The working condition dividing module is used for determining each use condition in the set period and the proportion of the use time of each use condition in the set period according to the initial charge-discharge strategy and the temperature of each preset time period; The remaining life calculation module is used for calculating the remaining life according to each use condition in the set period, the proportion of the use time of each use condition to the set period and the actually measured or simulated life of the battery under different use conditions which are acquired in advance.
  9. 9. An electronic device, comprising: A memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the battery usage state prediction method of any one of claims 1 to 7.
  10. 10. A computer-readable storage medium having stored thereon computer instructions for causing a computer to execute the battery usage state prediction method according to any one of claims 1 to 7.

Description

Battery use state prediction method, device, equipment and medium Technical Field The present invention relates to the field of battery management technologies, and in particular, to a method, an apparatus, a device, and a medium for predicting a battery usage state. Background During the use of the battery, numerous factors can have an impact on the life of the energy storage battery, including rate of use, depth of discharge (Depth of Discharge, DOD), time, temperature, etc. At present, the related scheme controls the discharge depth of the battery by selecting the accumulated value of deep discharge and the number of charge and discharge cycles, reduces the deep discharge behavior of the battery in the subsequent use process, ensures the safety of the battery and the charge and discharge cycle life, or the energy storage battery is charged in the valley electricity price period by analyzing the peak-valley electricity price of the power grid, and discharges in the peak-time electricity price period, so that the frequent charge and discharge of the battery are avoided, and meanwhile, the operation cost is reduced. Disclosure of Invention The invention provides a battery use state prediction method, a device, equipment and a medium, which can solve the problem that at least the existing method can not effectively predict the residual service life of a battery. In a first aspect, the present invention provides a battery usage state prediction method, the method comprising: acquiring an initial charge-discharge strategy and a battery use position set by a user; Determining the temperature of each preset time period in the set period according to the battery use position; Determining each use condition and the proportion of the use time of each use condition in the set period to the set period according to the initial charge-discharge strategy and the temperature of each preset time period; and calculating according to each use condition in the set period, the proportion of the use time of each use condition to the set period and the actual measurement or simulation years of the battery under different use conditions acquired in advance to obtain the residual use years. According to the battery use state prediction method, the initial charge and discharge strategies set by a user and the temperature conditions corresponding to the battery use positions are comprehensively considered to determine the use conditions in the set period and the proportion of the use time of each use condition in the set period, based on the determination of each use condition and the proportion thereof, the actual measurement or simulation years of the battery under different use conditions obtained in advance are combined, the remaining use years of the battery under the initial charge and discharge strategies set by the user can be calculated, dynamic evaluation can be carried out according to the actual use conditions of the battery, and compared with the traditional single-condition model prediction, the prediction result is more accurate, and the reasonable arrangement of the use and maintenance plan of the battery by the user is facilitated. In an alternative embodiment, the calculation formula for calculating the remaining service life is: In the formula, In order to keep the service life of the device in the rest,The use time for the nth use condition is the proportion of the set period,Is the measured or simulated age of the battery under the nth service condition. The method carries out weighted summation on the duty ratio of each using working condition and the battery life under the corresponding working condition in a quantitative mode, so that the calculation result of the residual using life is more visual and clear. In an alternative embodiment, after determining each usage condition in the set period and a proportion of a usage time of each usage condition to the set period according to the initial charge-discharge strategy and the temperature of each preset time period, the method includes: and calculating to obtain the total energy of the residual discharge according to each use condition in the set period, the proportion of the use time of each use condition to the set period and the actually measured or simulated residual discharge electric quantity of the battery under different use conditions, which are obtained in advance. By predicting the total energy of the residual discharge, the method can enable a user to more comprehensively know the use state of the battery and reasonably arrange the use plan. In an alternative embodiment, the calculation formula for calculating the total energy of the remaining discharge is: In the formula, For the total energy of the remaining discharge,The use time for the nth use condition is the proportion of the set period,The measured or simulated residual discharge capacity of the battery under the nth using condition is used. The method calculates the total energy of the re