Battery management system, charging and power storage vegetable warming board and charging device

Abstract

The invention discloses a battery management system, a charging and power storage vegetable warming board and a charging device, and relates to the technical field of battery management. According to the method, the adjustment time windows are set in the charging process of the vegetable warming board, the charging performance parameters are comprehensively evaluated after each window is ended, the charging performance indexes are constructed by comprehensively considering the battery temperature, the internal resistance and the power grid load parameters, and the charging power in each adjustment time window is determined according to the charging performance indexes. If so, maintaining the original charging power; if the charging power exceeds the range, the charging power is dynamically optimized by judging the magnitude, calculating the difference value and matching the corresponding power adjustment percentage according to the difference value and the preset difference value range, so that the problems that charging processing is carried out mostly through fixed charging power, the charging power cannot be dynamically and adaptively adjusted, and the charging power cannot be dynamically and adaptively adjusted in the prior art are solved. And the service life of the battery is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of battery management, and in particular to a battery management system, a charging and storage electric vegetable warming plate and a charging device. Background Art

[0002] The existing food warming plates on the market are all wired and cannot rotate freely with the restaurant dining table, and have poor flexibility. As people's quality of life improves, battery-powered food warming plates are gradually entering households, providing people with a warm dining experience in cold seasons.

[0003] However, the existing electric storage vegetable warming plate still has the following problems during the charging process: Most batteries are charged at a fixed power. The existing battery management system cannot dynamically and adaptively adjust the charging power according to the various parameters of the battery, which shortens the battery life and poses safety risks. In addition, the regular health assessment of the battery of the food warmer is ignored, and the initial charging power cannot be adjusted according to the regular health assessment results of the battery of the food warmer to adapt to the changes in battery performance, realize long-term intelligent charging management, and extend the overall service life of the battery.

[0004] To this end, a battery management system, a charging and storage electric vegetable warming plate and a charging device are introduced. Summary of the invention

[0005] The purpose of the present invention is to solve the problems mentioned in the background technology and to provide a battery management system, a charging and storage electric warming plate and a charging device.

[0006] The object of the present invention can be achieved by the following technical solution: A battery management system, comprising: Dynamic monitoring module: When the remaining power of the vegetable warming board reaches the set power threshold, the charging signal is triggered and the vegetable warming board is charged. During the charging process, the vegetable warming board is first charged with the initially set charging power, and the adjustment time window corresponding to the charging process is set. After reaching the preset adjustment time window, the charging performance parameters of the vegetable warming board battery during the charging process in the previous adjustment time window are extracted, and a comprehensive evaluation is performed to obtain the charging performance index cfg of the vegetable warming board battery in the previous adjustment time window. According to the charging performance index cfg, the charging power of the vegetable warming board battery in the next adjustment time window is determined and sent to the charging adjustment module; the charging performance parameters include battery temperature, battery remaining power, internal resistance and grid load Charging adjustment module: receiving the charging power of the battery of the vegetable warming plate when entering the next adjustment time window, and adjusting the charging power of the battery of the vegetable warming plate.

[0007] As a preferred embodiment of the present invention, the charging performance parameters of the battery of the vegetable warming plate during the charging process in the previous adjustment time window are extracted and comprehensively evaluated, specifically: Establishing a reference temperature value set for the battery of the vegetable warming plate, wherein the reference temperature value set includes battery reference temperature values ​​corresponding to the battery of the vegetable warming plate within different charging power ranges; Obtain the charging power used by the battery of the vegetable warming plate in the previous adjustment time window, and input it into the reference temperature value set to match the corresponding charging power range, and determine the battery reference temperature value of the battery of the vegetable warming plate in the previous adjustment time window; Obtain the temperature value of the battery of the vegetable warming plate at each measurement time point in the previous adjustment time window, and calculate the average value to obtain the comprehensive charging temperature value of the battery of the vegetable warming plate in the previous adjustment time window; Calculate the ratio between the obtained charging temperature comprehensive value and the determined battery reference temperature value; that is, charging temperature comprehensive value / battery reference temperature value; and obtain the charging temperature evaluation index of the warm food board battery in the previous adjustment time window; Obtain the remaining battery power displayed by the battery of the food warmer at the start time point and the end time point respectively corresponding to the previous adjustment time window, and calculate the difference, that is, subtract the remaining battery power displayed by the battery corresponding to the start time point from the remaining battery power displayed by the end time point, so as to obtain the charged amount of the battery of the food warmer in the previous adjustment time window; Setting different charging power ranges to correspond to reference charging power within an adjustment time window, identifying the charging power of the battery of the vegetable warming plate within a previous adjustment time window, and determining the reference charging power of the battery of the vegetable warming plate within the previous adjustment time window; The ratio of the charged capacity of the battery of the vegetable warmer in the previous adjustment time window to the reference charged capacity is calculated, that is, the charged capacity / reference charged capacity is used to obtain the charge capacity evaluation index of the battery of the vegetable warmer in the previous adjustment time window.

[0008] As a preferred embodiment of the present invention, the charging performance parameters of the battery of the vegetable warming plate during the charging process within the previous adjustment time window are extracted and comprehensively evaluated, and the following is also included: Set a reference internal resistance value of the battery internal resistance corresponding to the heating board battery; obtain the internal resistance value of the heating board battery at each measurement time point in the previous adjustment time window, and extract the highest internal resistance value therefrom as the internal resistance performance value of the heating board battery in the previous adjustment time window; Calculate the ratio between the internal resistance performance value of the battery of the vegetable warming board and the reference internal resistance value, that is, obtain the internal resistance evaluation index of the battery of the vegetable warming board in the previous adjustment time window by dividing the internal resistance performance value by the reference internal resistance value; The weight coefficients corresponding to the charging temperature evaluation index, charging capacity evaluation index and internal resistance evaluation index of the battery of the warm vegetable board are set respectively, and the charging temperature evaluation index, charging capacity evaluation index and internal resistance evaluation index of the battery of the warm vegetable board in the previous adjustment time window are multiplied by the corresponding set weight coefficients respectively and then summed, and the summed value is divided by the integer three to obtain the battery state evaluation index of the battery of the warm vegetable board in the previous adjustment time window; Obtain the grid load current value at each measurement time point during the charging process of the vegetable warming plate battery in the previous adjustment time window, and calculate the average value to obtain the grid load average value during the charging process of the vegetable warming plate battery in the previous adjustment time window; The maximum allowable load value corresponding to the average grid load is set, and the ratio between the average grid load and the maximum allowable load value in the previous adjustment time window is calculated, that is, the grid load evaluation index of the warm food board battery in the previous adjustment time window is obtained by dividing the average grid load by the maximum allowable load value.

[0009] As a preferred embodiment of the present invention, the charging performance index cfg of the battery of the warm vegetable plate in the previous adjustment time window is obtained, specifically: The weight coefficients corresponding to the battery status evaluation index and the grid load evaluation index are set respectively, and the battery status evaluation index and the grid load evaluation index of the heating board battery in the previous adjustment time window are multiplied by the corresponding set weight coefficients respectively, and then the sum is obtained to obtain the charging performance index cfg of the heating board battery in the previous adjustment time window.

[0010] As a preferred embodiment of the present invention, the charging power of the battery of the vegetable warmer when entering the next adjustment time window is determined according to the charging performance index cfg, specifically: The index threshold range corresponding to the preset charging performance index cfg is set. If the charging performance index cfg of the heating plate battery in the previous adjustment time window is within the preset index threshold range, the charging power used by the heating plate battery in the previous adjustment time window is directly extracted as the charging power of the heating plate battery in the next adjustment time window; If the charging performance index cfg of the battery of the vegetable warming plate in the previous adjustment time window is outside the preset index threshold range, identifying whether the charging performance index cfg is higher than the preset index threshold range or lower than the preset index threshold range; If the charging performance index cfg is higher than a preset index threshold range, a power reduction signaling is triggered; the difference between the charging performance index cfg and the maximum value within the index threshold range is calculated, and the calculated difference is marked as a reduction difference; Set the difference value ranges of each group corresponding to the difference reduction, and set the difference value ranges corresponding to each group of difference reduction to correspond to a power reduction percentage; after matching the difference reduction with the difference value ranges of each group, obtain the power reduction percentage, extract the charging power used by the warm vegetable plate battery in the previous adjustment time window, and adjust the extracted charging power according to the obtained power reduction percentage, and use the adjusted charging power as the charging power of the warm vegetable plate battery in the next adjustment time window; If the charging performance index cfg is lower than the preset index threshold range, the power increase signaling is triggered; the difference between the charging performance index cfg and the lowest value within the index threshold range is calculated, and the calculated difference is marked as the increase difference; Set the difference value ranges for each group of difference values ​​corresponding to the adjustment height difference, and set the difference value ranges corresponding to each group of adjustment height difference values ​​to correspond to a power increase percentage respectively; after matching the adjustment height difference with the difference value ranges for each group, obtain the power increase percentage, extract the charging power used by the warm food plate battery in the previous adjustment time window, and adjust the extracted charging power according to the obtained power increase percentage, and after adjustment, use it as the charging power of the warm food plate battery when entering the next adjustment time window.

[0011] As a preferred embodiment of the present invention, it also includes a battery evaluation module: According to the set battery evaluation cycle, after reaching the set battery evaluation cycle, the historical data of the vegetable warming board battery is analyzed, and the charging power initially set for the vegetable warming board battery in the future charging process is adjusted according to the analysis results; the historical data includes the battery service life, the number of battery charges and the number of battery failures.

[0012] As a preferred embodiment of the present invention, the charging power initially set for the warm food plate battery in the future charging process is adjusted according to the analysis results, specifically: After reaching the set battery evaluation cycle, the arrival time point is marked as the evaluation point, the time point of the first charge of the battery of the warm vegetable board is obtained, and the time difference between the time point and the evaluation point is calculated to obtain the battery life of the battery of the warm vegetable board in the current battery evaluation cycle; the number of battery charges and battery failures of the battery of the warm vegetable board before the evaluation point are counted; Set the reference service life, reference battery charging times and allowable battery failure times of the food warmer battery; Calculate the ratio of the battery life, battery charge times and battery failure times of the battery of the food warmer in the current battery evaluation cycle to the reference life, reference battery charge times and allowed battery failure times, i.e., by (battery life / reference life), (battery charge times / reference battery charge times) and (battery failure times / allowed battery failure times); obtain the life ratio, charge ratio and failure ratio of the battery of the food warmer in the current battery evaluation cycle; Set the weight coefficients corresponding to the age ratio, charging ratio and failure ratio respectively, multiply the age ratio, charging ratio and failure ratio of the heating board battery in the current battery evaluation cycle by the corresponding weight coefficients respectively, and then sum them to obtain the health assessment index of the heating board battery in the current battery evaluation cycle; The reference threshold index corresponding to the health assessment index is set. If the health assessment index of the battery of the food warmer in the current battery assessment cycle is less than the set reference threshold index, the charging power initially set is not adjusted; Otherwise, the adjustment signaling is triggered, the difference between the health assessment index and the reference threshold index is calculated, the calculated difference is marked as the adjustment difference, the intervals of each group of difference values ​​corresponding to the adjustment difference are preset, and each group of difference value intervals is set to correspond to an adjustment percentage, and the adjustment difference of the current battery assessment cycle is matched with the intervals of each group of difference values, so as to determine the adjustment percentage; The formula: initial charging power - (initial charging power × adjustment percentage) is used for calculation to obtain the optimized charging power, and the optimized charging power is used as the initial charging power of the battery in the future charging process of the warm food board.

[0013] A charging electric storage vegetable heating board, comprising an electric storage vegetable heating board, wherein a wireless charging module is arranged at the bottom of the electric storage vegetable heating board; A charging device comprises a charging cabinet, wherein a charging seat adapted to a charging port of an electric vegetable warming plate is arranged inside the charging cabinet.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention sets an adjustment time window during the charging process of the warm vegetable plate, comprehensively evaluates the charging performance parameters after each window, comprehensively considers the battery temperature, internal resistance, and grid load parameters to construct a charging performance index, and determines the charging power in each adjustment time window according to the charging performance index. If it is within a preset threshold range, the original charging power is maintained; if it exceeds the range, the high and low are judged and the difference is calculated, and the corresponding power adjustment percentage is matched according to the difference and the preset difference value range, so as to realize dynamic optimization of the charging power, thereby solving the problem that most of the prior art uses a fixed charging power for charging processing, and cannot dynamically and adaptively adjust the charging power, resulting in a shortened battery life. The present invention analyzes the historical data of battery service life, charging times and failure times according to a set battery evaluation cycle, calculates the age ratio, charging ratio, failure ratio and combines the weight coefficient to obtain a health assessment index, and compares it with the reference threshold index. If the health assessment index meets the adjustment conditions, the percentage is adjusted according to the adjustment difference and the preset interval, and then the initial charging power of the future charging process is adjusted. For batteries with a long service life, a large number of charging times or a large number of failures, the initial charging power is appropriately reduced to adapt to changes in battery performance, realize long-term intelligent charging management, and extend the overall service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a principle block diagram of the present invention; Figure 2 is a schematic diagram of the electric storage vegetable warming board of the present invention; Figure 3 Schematic diagram of the charging device in the present invention.

[0017] 1. Battery-powered vegetable warming board; 2. Charging cabinet. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 As shown, a battery management system includes a dynamic monitoring module, a battery evaluation module and a charging adjustment module; The dynamic monitoring module is used to trigger the charging signal and charge the warm vegetable board when the remaining power of the warm vegetable board reaches the set power threshold. During the charging process, the warm vegetable board is first charged with the initially set charging power, and the adjustment time window corresponding to the charging process is set; for example, the adjustment time window can be set to 60s; after reaching the preset adjustment time window, the charging performance parameters of the warm vegetable board battery in the previous adjustment time window during the charging process are extracted, and a comprehensive evaluation is performed to obtain the charging performance index cfg of the warm vegetable board battery in the previous adjustment time window, and the charging power of the warm vegetable board battery in the next adjustment time window is determined according to the charging performance index cfg, and sent to the charging adjustment module; that is, the charging power of the warm vegetable board battery is adjusted every 60s; wherein the charging performance parameters include battery temperature, battery remaining power, internal resistance and grid load; Specifically: Establish a reference temperature value set for the battery of the vegetable warmer, which includes the battery reference temperature values ​​corresponding to the battery of the vegetable warmer within different charging power ranges; the reference temperature value set is set by the technician according to the battery specifications of the vegetable warmer; Obtain the charging power used by the battery of the vegetable warming plate in the previous adjustment time window, and input it into the reference temperature value set to match the corresponding charging power range, and determine the battery reference temperature value of the battery of the vegetable warming plate in the previous adjustment time window; Obtain the temperature value of the battery of the vegetable warming plate at each measurement time point in the previous adjustment time window, and calculate the average value to obtain the comprehensive charging temperature value of the battery of the vegetable warming plate in the previous adjustment time window; Calculate the ratio between the obtained charging temperature comprehensive value and the determined battery reference temperature value; that is, charging temperature comprehensive value / battery reference temperature value; and obtain the charging temperature evaluation index of the warm food board battery in the previous adjustment time window; It should be noted that by establishing a reference temperature value set and associating different charging powers with corresponding battery reference temperature values, a clear reference standard can be provided for the battery temperature under a specific charging power; this makes the evaluation of the battery temperature state more accurate and avoids the temperature judgment deviation caused by lack of reference; the charging temperature comprehensive value is calculated and compared with the reference temperature value to obtain the charging temperature evaluation index, thereby realizing dynamic monitoring of the battery temperature during the charging process; The higher the charging temperature assessment index is, the lower the charging power should be in the next adjustment time window. Obtain the remaining battery power displayed by the battery of the food warmer at the start time point and the end time point respectively corresponding to the previous adjustment time window, and calculate the difference, that is, subtract the remaining battery power displayed by the battery corresponding to the start time point from the remaining battery power displayed by the end time point, so as to obtain the charged amount of the battery of the food warmer in the previous adjustment time window; Setting different charging power ranges to correspond to reference charging power within an adjustment time window, identifying the charging power of the battery of the vegetable warming plate within a previous adjustment time window, and determining the reference charging power of the battery of the vegetable warming plate within the previous adjustment time window; The charging capacity evaluation index of the battery of the vegetable warming plate in the previous adjustment time window is obtained by calculating the ratio of the charged capacity of the battery of the vegetable warming plate in the previous adjustment time window to the reference charged capacity, that is, the charged capacity / reference charged capacity. It should be noted that the higher the charging capacity evaluation index is, the more it means that the battery of the warm food board has been charged with too much electricity in the previous adjustment time window, and the corresponding charging power in the next adjustment time window should be reduced accordingly.

[0020] Set the reference internal resistance value of the battery corresponding to the battery of the vegetable warmer; set the reference internal resistance value according to the number of times the battery of the vegetable warmer is charged; Obtain the internal resistance value of the vegetable warming board battery at each measurement time point in the previous adjustment time window, and extract the highest internal resistance value therefrom as the internal resistance performance value of the vegetable warming board battery in the previous adjustment time window; Calculate the ratio between the internal resistance performance value of the battery of the vegetable warming board and the reference internal resistance value, that is, obtain the internal resistance evaluation index of the battery of the vegetable warming board in the previous adjustment time window by dividing the internal resistance performance value by the reference internal resistance value; It should be noted that the higher the internal resistance evaluation index is, the more abnormal the internal resistance performance of the battery in the previous adjustment time window is, and the corresponding charging power in the next adjustment time window should be reduced accordingly.

[0021] The weight coefficients corresponding to the charging temperature evaluation index, charging capacity evaluation index and internal resistance evaluation index of the battery of the warm vegetable board are set respectively, and the charging temperature evaluation index, charging capacity evaluation index and internal resistance evaluation index of the battery of the warm vegetable board in the previous adjustment time window are multiplied by the corresponding set weight coefficients respectively and then summed, and the summed value is divided by the integer three to obtain the battery state evaluation index of the battery of the warm vegetable board in the previous adjustment time window; Obtain the grid load current value at each measurement time point during the charging process of the vegetable warming plate battery in the previous adjustment time window, and calculate the average value to obtain the grid load average value during the charging process of the vegetable warming plate battery in the previous adjustment time window; The maximum allowable load value corresponding to the grid load average is set, and the ratio between the grid load average and the maximum allowable load value in the previous adjustment time window is calculated, that is, the grid load evaluation index of the warm food board battery in the previous adjustment time window is obtained by dividing the grid load average with the maximum allowable load value; It should be noted that the higher the grid load assessment index, the higher the grid load. There may be a large number of other electrical devices consuming electricity in the grid, such as multiple high-power electrical appliances running at the same time. If the battery of the food warmer continues to charge at a higher power, it will further increase the burden on the grid, causing the grid voltage to fluctuate more and even cause power supply failures such as tripping. Therefore, the charging power in the next adjustment time window should be reduced accordingly.

[0022] The weight coefficients corresponding to the battery status evaluation index and the grid load evaluation index are set respectively, and the battery status evaluation index and the grid load evaluation index of the heating board battery in the previous adjustment time window are multiplied by the corresponding set weight coefficients respectively, and then the sum is obtained to obtain the charging performance index cfg of the heating board battery in the previous adjustment time window; The charging power of the battery of the food warmer board when entering the next adjustment time window is determined according to the charging performance index cfg, specifically: The index threshold range corresponding to the preset charging performance index cfg is set. If the charging performance index cfg of the heating plate battery in the previous adjustment time window is within the preset index threshold range, the charging power used by the heating plate battery in the previous adjustment time window is directly extracted as the charging power of the heating plate battery in the next adjustment time window; If the charging performance index cfg of the battery of the vegetable warming plate in the previous adjustment time window is outside the preset index threshold range, identifying whether the charging performance index cfg is higher than the preset index threshold range or lower than the preset index threshold range; If the charging performance index cfg is higher than a preset index threshold range, a power reduction signaling is triggered; the difference between the charging performance index cfg and the maximum value within the index threshold range is calculated, and the calculated difference is marked as a reduction difference; Set the difference value ranges of each group corresponding to the difference reduction, and set the difference value ranges corresponding to each group of difference reduction to correspond to a power reduction percentage; the higher the difference reduction, the higher the corresponding power reduction percentage, and the higher the charging power that needs to be reduced; after matching the difference reduction with the difference value ranges of each group, the power reduction percentage is obtained, the charging power used by the warm food plate battery in the previous adjustment time window is extracted, and the extracted charging power is adjusted according to the obtained power reduction percentage, and the adjusted charging power is used as the charging power of the warm food plate battery when entering the next adjustment time window; If the charging performance index cfg is lower than the preset index threshold range, the power increase signaling is triggered; the difference between the charging performance index cfg and the lowest value within the index threshold range is calculated, and the calculated difference is marked as the increase difference; Set the difference value ranges of each group corresponding to the heightening difference, and set the difference value ranges corresponding to each group of heightening difference to correspond to a power increase percentage; the higher the heightening difference, the higher the corresponding power increase percentage, and the higher the charging power that can be increased; after matching the heightening difference with the difference value ranges of each group, the power increase percentage is obtained, the charging power used by the warm food plate battery in the previous adjustment time window is extracted, and the extracted charging power is adjusted according to the obtained power increase percentage, and the adjusted charging power is used as the charging power of the warm food plate battery in the next adjustment time window; It should be noted that the difference calculation processes of the above-mentioned reduction difference and increase difference are all calculated by absolute value.

[0023] The battery evaluation module is used to evaluate the battery according to the set battery evaluation cycle; the cycle can be set to be evaluated once a month; after reaching the set battery evaluation cycle, the historical data of the battery of the warm vegetable board is analyzed, and the charging power initially set in the future charging process of the battery of the warm vegetable board is adjusted according to the analysis results; the historical data includes the battery life, the number of battery charging times and the number of battery failures; Specifically: After reaching the set battery evaluation cycle, the arrival time point is marked as the evaluation point, the time point of the first charge of the battery of the warm vegetable board is obtained, and the time difference between the time point and the evaluation point is calculated to obtain the battery life of the battery of the warm vegetable board in the current battery evaluation cycle; the number of battery charges and battery failures of the battery of the warm vegetable board before the evaluation point are counted; Set the reference service life, reference battery charging times and allowable battery failure times of the food warmer battery; That is, if the reference service life is reached, the battery of the vegetable warmer will be aged to a great extent; if the reference battery charging times are reached, the battery of the vegetable warmer will be aged to a great extent; if the allowable battery failure times are reached, the battery charging risk of the vegetable warmer is very high; Calculate the ratio of the battery life, battery charge times and battery failure times of the battery of the food warmer in the current battery evaluation cycle to the reference life, reference battery charge times and allowed battery failure times, i.e., by (battery life / reference life), (battery charge times / reference battery charge times) and (battery failure times / allowed battery failure times); obtain the life ratio, charge ratio and failure ratio of the battery of the food warmer in the current battery evaluation cycle; Set the weight coefficients corresponding to the age ratio, charging ratio and failure ratio respectively, multiply the age ratio, charging ratio and failure ratio of the heating board battery in the current battery evaluation cycle by the corresponding weight coefficients respectively, and then sum them to obtain the health assessment index of the heating board battery in the current battery evaluation cycle; The reference threshold index corresponding to the health assessment index is set. If the health assessment index of the battery of the food warmer in the current battery assessment cycle is less than the set reference threshold index, the charging power initially set is not adjusted; Otherwise, the adjustment signaling is triggered, the difference between the health assessment index and the reference threshold index is calculated, the calculated difference is marked as the adjustment difference, the intervals of each group of difference values ​​corresponding to the adjustment difference are preset, and each group of difference value intervals is set to correspond to an adjustment percentage, and the adjustment difference of the current battery assessment cycle is matched with the intervals of each group of difference values, so as to determine the adjustment percentage; The formula: initial charging power - (initial charging power × adjustment percentage) is used for calculation to obtain the optimized charging power, and the optimized charging power is used as the initial charging power of the battery in the future charging process of the warm food board; It should be noted that by comprehensively considering the impact of usage time, charging times, and failure times on battery health, and adjusting the initial charging power of the warm food plate battery accordingly, the battery life can be effectively extended and the safety and stability of charging can be improved.

[0024] The charging adjustment module is used to receive the charging power of the battery of the vegetable warming plate when entering the next adjustment time window, and adjust the charging power of the battery of the vegetable warming plate; In addition, a charging electric storage heating board includes an electric storage heating board 1, and a wireless charging module is arranged at the bottom of the electric storage heating board 1, which can realize the wireless charging function of the electric storage heating board 1 to adapt to the use requirements of other complex environments; Special note: the food warming plates currently on the market are all wired and can generally only be used at home. They cannot rotate freely on hotel dining tables. This food warming plate is a wireless charging and power storage heating plate with a charging port, which completely solves the problem of free rotation of the table.

[0025] Through the setting of the power storage module, the temperature can be much higher than the existing food warming plates on the market, which can not only keep warm, but also achieve the purpose of blanching food; This food warming board is safe, hygienic, convenient, energy-saving, and environmentally friendly.

[0026] A charging device, comprising a charging cabinet 2, wherein a charging seat adapted to a charging port of an electric heating plate 1 is arranged inside the charging cabinet 2; The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A battery management system, characterized in that: include: Dynamic monitoring module: When the remaining power of the vegetable warming board reaches the set power threshold, the charging signal is triggered and the vegetable warming board is charged. During the charging process, the vegetable warming board is first charged with the initially set charging power, and the adjustment time window corresponding to the charging process is set. After reaching the preset adjustment time window, the charging performance parameters of the vegetable warming board battery during the charging process in the previous adjustment time window are extracted, and a comprehensive evaluation is performed to obtain the charging performance index cfg of the vegetable warming board battery in the previous adjustment time window. According to the charging performance index cfg, the charging power of the vegetable warming board battery in the next adjustment time window is determined and sent to the charging adjustment module; the charging performance parameters include battery temperature, battery remaining power, internal resistance and grid load Charging adjustment module: receiving the charging power of the battery of the vegetable warming plate when entering the next adjustment time window, and adjusting the charging power of the battery of the vegetable warming plate.

2. A battery management system according to claim 1, characterized in that: The charging performance parameters of the battery in the previous adjustment time window during the charging process are extracted and comprehensively evaluated, specifically: Establishing a reference temperature value set for the battery of the vegetable warming plate, wherein the reference temperature value set includes battery reference temperature values ​​corresponding to the battery of the vegetable warming plate within different charging power ranges; Obtain the charging power used by the battery of the vegetable warming plate in the previous adjustment time window, and input it into the reference temperature value set to match the corresponding charging power range, and determine the battery reference temperature value of the battery of the vegetable warming plate in the previous adjustment time window; Obtain the temperature value of the battery of the vegetable warming plate at each measurement time point in the previous adjustment time window, and calculate the average value to obtain the comprehensive charging temperature value of the battery of the vegetable warming plate in the previous adjustment time window; Calculate the ratio between the obtained charging temperature comprehensive value and the determined battery reference temperature value; that is, charging temperature comprehensive value / battery reference temperature value; Obtaining a charging temperature evaluation index of the battery of the vegetable warmer within a previous adjustment time window; Obtain the remaining battery power displayed by the battery of the food warmer at the start time point and the end time point respectively corresponding to the previous adjustment time window, and calculate the difference, that is, subtract the remaining battery power displayed by the battery corresponding to the start time point from the remaining battery power displayed by the end time point, so as to obtain the charged amount of the battery of the food warmer in the previous adjustment time window; Setting different charging power ranges to correspond to reference charging power within an adjustment time window, identifying the charging power of the battery of the vegetable warming plate within a previous adjustment time window, and determining the reference charging power of the battery of the vegetable warming plate within the previous adjustment time window; The ratio of the charged capacity of the battery of the vegetable warmer in the previous adjustment time window to the reference charged capacity is calculated, that is, the charged capacity / reference charged capacity is used to obtain the charge capacity evaluation index of the battery of the vegetable warmer in the previous adjustment time window.

3. A battery management system according to claim 2, characterized in that: Extract the charging performance parameters of the battery in the charging process within the previous adjustment time window and conduct a comprehensive evaluation, including: Set a reference internal resistance value of the battery internal resistance corresponding to the heating board battery; obtain the internal resistance value of the heating board battery at each measurement time point in the previous adjustment time window, and extract the highest internal resistance value therefrom as the internal resistance performance value of the heating board battery in the previous adjustment time window; Calculate the ratio between the internal resistance performance value of the battery of the vegetable warming board and the reference internal resistance value, that is, obtain the internal resistance evaluation index of the battery of the vegetable warming board in the previous adjustment time window by dividing the internal resistance performance value by the reference internal resistance value; The weight coefficients corresponding to the charging temperature evaluation index, charging capacity evaluation index and internal resistance evaluation index of the battery of the warm vegetable board are set respectively, and the charging temperature evaluation index, charging capacity evaluation index and internal resistance evaluation index of the battery of the warm vegetable board in the previous adjustment time window are multiplied by the corresponding set weight coefficients respectively and then summed, and the summed value is divided by the integer three to obtain the battery state evaluation index of the battery of the warm vegetable board in the previous adjustment time window; Obtain the grid load current value at each measurement time point during the charging process of the vegetable warming plate battery in the previous adjustment time window, and calculate the average value to obtain the grid load average value during the charging process of the vegetable warming plate battery in the previous adjustment time window; The maximum allowable load value corresponding to the average grid load is set, and the ratio between the average grid load and the maximum allowable load value in the previous adjustment time window is calculated, that is, the grid load evaluation index of the warm food board battery in the previous adjustment time window is obtained by dividing the average grid load by the maximum allowable load value.

4. A battery management system according to claim 3, characterized in that: The charging performance index cfg of the battery of the warm vegetable board in the previous adjustment time window is obtained, specifically: The weight coefficients corresponding to the battery status evaluation index and the grid load evaluation index are set respectively, and the battery status evaluation index and the grid load evaluation index of the heating board battery in the previous adjustment time window are multiplied by the corresponding set weight coefficients respectively, and then the sum is obtained to obtain the charging performance index cfg of the heating board battery in the previous adjustment time window.

5. A battery management system according to claim 4, characterized in that: The charging power of the battery of the food warmer board when entering the next adjustment time window is determined according to the charging performance index cfg, specifically: The index threshold range corresponding to the preset charging performance index cfg is set. If the charging performance index cfg of the heating plate battery in the previous adjustment time window is within the preset index threshold range, the charging power used by the heating plate battery in the previous adjustment time window is directly extracted as the charging power of the heating plate battery in the next adjustment time window; If the charging performance index cfg of the battery of the vegetable warming plate in the previous adjustment time window is outside the preset index threshold range, identifying whether the charging performance index cfg is higher than the preset index threshold range or lower than the preset index threshold range; If the charging performance index cfg is higher than the preset index threshold range, the power reduction signaling is triggered; Calculate the difference between the charging performance index cfg and the maximum value within the index threshold range, and mark the calculated difference as a reduction difference; Set the difference value ranges of each group corresponding to the difference reduction, and set the difference value ranges corresponding to each group of difference reduction to correspond to a power reduction percentage; after matching the difference reduction with the difference value ranges of each group, obtain the power reduction percentage, extract the charging power used by the warm vegetable plate battery in the previous adjustment time window, and adjust the extracted charging power according to the obtained power reduction percentage, and use the adjusted charging power as the charging power of the warm vegetable plate battery in the next adjustment time window; If the charging performance index cfg is lower than the preset index threshold range, the power increase signaling is triggered; the difference between the charging performance index cfg and the lowest value within the index threshold range is calculated, and the calculated difference is marked as the increase difference; Set the difference value ranges for each group of difference values ​​corresponding to the adjustment height difference, and set the difference value ranges corresponding to each group of adjustment height difference values ​​to correspond to a power increase percentage respectively; after matching the adjustment height difference with the difference value ranges for each group, obtain the power increase percentage, extract the charging power used by the warm food plate battery in the previous adjustment time window, and adjust the extracted charging power according to the obtained power increase percentage, and after adjustment, use it as the charging power of the warm food plate battery when entering the next adjustment time window.

6. A battery management system according to claim 5, characterized in that: Also includes battery evaluation modules: According to the set battery evaluation cycle, after reaching the set battery evaluation cycle, the historical data of the vegetable warming board battery is analyzed, and the charging power initially set for the vegetable warming board battery in the future charging process is adjusted according to the analysis results; the historical data includes the battery service life, the number of battery charges and the number of battery failures.

7. A battery management system according to claim 6, characterized in that: According to the analysis results, the charging power initially set for the warm food board battery in the future charging process is adjusted, specifically: After reaching the set battery evaluation cycle, the arrival time point is marked as the evaluation point, the time point of the first charge of the battery of the warm vegetable board is obtained, and the time difference between the time point and the evaluation point is calculated to obtain the battery life of the battery of the warm vegetable board in the current battery evaluation cycle; the number of battery charges and battery failures of the battery of the warm vegetable board before the evaluation point are counted; Set the reference service life, reference battery charging times and allowable battery failure times of the food warmer battery; The battery life, battery charge times and battery failure times of the battery of the warm vegetable plate in the current battery evaluation cycle are respectively calculated by comparing the battery life, reference battery charge times and allowable battery failure times, that is, by (battery life / reference life), (battery charge times / reference battery charge times) and (battery failure times / allowable battery failure times); Obtain the life ratio, charging ratio and failure ratio of the battery of the food warmer in the current battery evaluation cycle; Set the weight coefficients corresponding to the age ratio, charging ratio and failure ratio respectively, multiply the age ratio, charging ratio and failure ratio of the heating board battery in the current battery evaluation cycle by the corresponding weight coefficients respectively, and then sum them to obtain the health assessment index of the heating board battery in the current battery evaluation cycle; The reference threshold index corresponding to the health assessment index is set. If the health assessment index of the battery of the food warmer in the current battery assessment cycle is less than the set reference threshold index, the charging power initially set is not adjusted; Otherwise, the adjustment signaling is triggered, the difference between the health assessment index and the reference threshold index is calculated, the calculated difference is marked as the adjustment difference, the intervals of each group of difference values ​​corresponding to the adjustment difference are preset, and each group of difference value intervals is set to correspond to an adjustment percentage, and the adjustment difference of the current battery assessment cycle is matched with the intervals of each group of difference values, so as to determine the adjustment percentage; The formula: initial charging power - (initial charging power × adjustment percentage) is used for calculation to obtain the optimized charging power, and the optimized charging power is used as the initial charging power of the battery in the future charging process of the warm food board.

8. A charging and storing electric food warming plate, applied to a battery management system as claimed in any one of claims 1 to 7, characterized in that: It comprises an electric storage vegetable warming board (1), wherein a wireless charging module is arranged at the bottom of the electric storage vegetable warming board (1).

9. A charging device, applied to the charging and storage electric warming plate proposed in claim 8, characterized in that: It comprises a charging cabinet (2), wherein a charging seat adapted to the charging port of the electric storage vegetable warming plate (1) is arranged inside the charging cabinet (2).

Images