CN-122017580-A - Energy storage battery discharge depth early warning method and device, electronic equipment and storage medium

CN122017580ACN 122017580 ACN122017580 ACN 122017580ACN-122017580-A

Abstract

The invention relates to the technical field of energy storage battery management and discloses an energy storage battery depth of discharge early warning method, an energy storage battery depth of discharge early warning device, electronic equipment and a storage medium, wherein the method comprises the steps of obtaining the current date and the geographic position information of an energy storage power station; the method comprises the steps of determining whether the pre-warning trigger condition is met or not according to the comparison result of the latitude information and a preset latitude threshold value and the comparison result of the current date and the preset season starting time, triggering the depth of discharge pre-warning of the energy storage battery in the energy storage power station and sending grading pre-warning information to a user if the pre-warning trigger condition is met, and obviously improving the reliability of the energy storage power station in winter and simultaneously reducing the maintenance cost and the user use risk caused by battery faults.

Inventors

TANG WENBIN
ZHOU BIN
PAN DONGHUA

Assignees

固德威技术股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260128

Claims (10)

1. An energy storage battery depth of discharge early warning method, which is characterized by comprising the following steps: obtaining the current date and the geographic position information of the energy storage power station, wherein the geographic position information at least comprises latitude information; Judging whether an early warning triggering condition is met or not based on a comparison result of the latitude information and a preset latitude threshold value and a comparison result of a current date and a preset season starting time; and if the early warning triggering condition is met, triggering the depth of discharge early warning of the energy storage battery in the energy storage power station, and sending grading early warning information to a user.
2. The method of claim 1, wherein determining whether the pre-warning trigger condition is satisfied based on a comparison result of the latitude information and a preset latitude threshold value and a comparison result of a current date and a preset season start time comprises: if the latitude information is larger than or equal to a preset latitude threshold value and the current date reaches or exceeds the preset season starting time, judging that the early warning triggering condition is met.
3. The method for early warning of the depth of discharge of an energy storage battery according to claim 2, wherein the geographical location information further comprises altitude information, and the method for judging whether the early warning triggering condition is satisfied further comprises: If the latitude information is larger than or equal to a preset latitude threshold value, and the current date reaches or exceeds the preset season starting time, correcting the preset season starting time based on a preset correction rule and altitude information; and if the current date reaches or exceeds the corrected season starting time, judging that the early warning triggering condition is met.
4. The energy storage battery depth of discharge warning method of claim 3, wherein correcting the preset season start time based on the preset correction rules and the altitude information comprises: calculating to obtain a time advance according to the difference value between the altitude information and a preset altitude threshold value and the corresponding relation between the preset altitude and the time advance; and advancing the preset season starting time by the time advance to obtain corrected early warning trigger time.
5. The energy storage battery depth of discharge warning method of claim 3, wherein correcting the preset season starting time based on the preset correction rules and the altitude information, further comprises: and inquiring a preset latitude-altitude-early warning trigger time mapping table according to the latitude information and the altitude information, and directly acquiring the corresponding corrected early warning trigger time.
6. The method of claim 1, wherein transmitting the hierarchical early warning information to the user comprises: Responding to the early warning of the discharge depth of the energy storage battery, and sending first early warning information to a corresponding user through at least one preset communication channel, wherein the first early warning information comprises suggestions and operation guidance for adjusting the discharge depth of the battery to a preset safety value; After the first early warning information is sent, starting state monitoring, and periodically or event-triggered obtaining a current discharge depth setting value of the energy storage battery of a user within a preset first monitoring duration; If the current discharge depth setting value of the energy storage battery of the user is not adjusted to be smaller than or equal to the preset safety value after the first monitoring duration is finished, sending second early warning information to the corresponding user, wherein the second early warning information is higher than the first early warning information in warning intensity or urgency; If the current discharge depth setting value of the energy storage battery of the user is adjusted to be smaller than or equal to the preset safety value within the first monitoring duration, sending confirmation information to the corresponding user so as to inform the corresponding user that the setting is completed.
7. The energy storage battery depth of discharge warning method of claim 1, further comprising: And when the current date is judged to reach the preset season ending time, generating and sending a recovery prompt message to the user so as to prompt the user to recover the discharge depth of the energy storage battery to the conventional operation value.
8. An energy storage battery depth of discharge early warning device, characterized in that the device includes: The data acquisition module is used for acquiring the current date and the geographic position information of the energy storage power station, wherein the geographic position information at least comprises latitude information; the early warning judging module is used for judging whether an early warning triggering condition is met or not based on a comparison result of the latitude information and a preset latitude threshold value and a comparison result of a current date and a preset season starting time; and the early warning generation and communication module is used for triggering the discharge depth early warning of the energy storage battery in the energy storage power station if the early warning triggering condition is met and sending grading early warning information to a user.
9. An electronic device, comprising: The energy storage battery depth of discharge early warning method according to any one of claims 1 to 7, and a processor, wherein the memory and the processor are in communication connection, and computer instructions are stored in the memory, and the processor executes the computer instructions, so that the energy storage battery depth of discharge early warning method according to any one of claims 1 to 7 is executed.
10. A computer-readable storage medium having stored thereon computer instructions for causing a computer to perform the energy storage battery depth of discharge warning method of any one of claims 1 to 7.

Description

Energy storage battery discharge depth early warning method and device, electronic equipment and storage medium Technical Field The invention relates to the technical field of energy storage battery management, in particular to an energy storage battery depth of discharge early warning method, an energy storage battery depth of discharge early warning device, electronic equipment and a storage medium. Background The majority of the maintenance schemes of the energy storage battery in the prior art are as follows: 1. temperature-based Battery protection, which is a standard function of BMS (Battery MANAGEMENT SYSTEM ). When the battery temperature is lower than 0 ℃, the BMS directly prohibits charging (because low-temperature charging may evolve lithium, damage the battery), but generally does not prohibit discharging. 2. Calendar-based simple reminders some systems may have a fixed "winter mode" reminder, but are typically static (e.g., unified reminders 11 months 1 day a year), lacking dynamic decisions based on geographic location and latitude, and poor user accuracy for different weather zones. 3. User manual settings the most common solution at present is to rely on user manual education and user consciousness. The manual may suggest that the user adjust the DOD (Depth of Discharge ) before the winter comes, but many users ignore or forget, resulting in problems. In summary, the prior art has the following main drawbacks: 1. Passive protection hysteresis the currently prevailing battery management systems passively inhibit charging operation only when a battery temperature below 0 ℃ is detected, to prevent lithium precipitation from damaging the battery. However, this mechanism does not prevent the battery from being in a dangerous state of high depth of discharge (Depth of Discharge, DOD) before the low temperature comes. Once the battery is over low in voltage due to continuous discharge at low temperature, even if the temperature rises, the BMS can not be started due to under-voltage locking, so that the battery is frozen, and the battery must be awakened by manual external operation, so that the system is paralyzed. 2. The user dependence is strong, the solution is mostly dependent on the advance notice of the user manual, and the user is required to adjust the setting in winter voluntarily. In practical use, the user is very easy to forget or ignore the operation, and the preventive measure is similar to a dummy. 3. The early warning lacks accuracy, namely, part of the system sends a prompt by adopting a fixed date (such as 11 months and 1 day a year), can not adapt to huge differences of different latitudes and different weather bands in the world, and can cause harassment to low-latitude users and possibly insufficient early warning to high-latitude users. Disclosure of Invention The invention provides an energy storage battery discharging depth early warning method, an energy storage battery discharging depth early warning device, electronic equipment and a storage medium, and aims to solve the problems of over-discharge damage of an energy storage battery caused by early warning lag, poor regional adaptability and low user execution rate in the existing energy storage battery winter protection scheme. In a first aspect, the present invention provides a method for early warning of a depth of discharge of an energy storage battery, the method comprising: obtaining the current date and the geographic position information of the energy storage power station, wherein the geographic position information at least comprises latitude information; judging whether an early warning triggering condition is met or not based on a comparison result of the latitude information and a preset latitude threshold value and a comparison result of the current date and the preset season starting time; and if the early warning triggering condition is met, triggering the depth of discharge early warning of the energy storage battery in the energy storage power station, and sending grading early warning information to a user. According to the energy storage battery depth of discharge early warning method provided by the invention, the transition from passive monitoring to active pre-judging is realized by fusing real-time date and power station latitude information and intelligently comparing with the preset space-time threshold value. The method can automatically and accurately trigger early warning before the low-temperature season comes, and guide a user to adjust the battery setting in advance by means of pushing the grading information. The process effectively prevents performance attenuation or permanent damage of the battery caused by over discharge at low temperature, thereby remarkably improving the reliability of the energy storage power station in winter, simultaneously reducing maintenance cost and user use risk caused by battery faults, realizing balance between safety and user experience, and solving the pro