Energy storage device temperature control method and system

Abstract

The present application discloses a temperature control method and system for energy storage equipment, which relates to the technical field of energy storage system management. The method and system solve the technical problem that existing temperature control methods for energy storage equipment cause uneven temperature distribution in the space where the energy storage equipment is stored, resulting in inconsistent performance of energy storage equipment in different areas, and further making it difficult to uniformly manage container energy storage equipment. The method and system comprise the following steps: Step 1: Acquiring location information and device information of each energy storage device and temperature control device in the energy storage device warehouse; Step 2: Dividing the energy storage device warehouse into a plurality of temperature control areas based on the location information and device information; Step 3: Acquiring a set acquisition signal and acquiring temperature detection values of each temperature control area based on the acquisition signal; Step 4: Generating a temperature control scheme for controlling each temperature control device based on the temperature detection values, thereby achieving uniform temperature distribution in the energy storage device warehouse and facilitating unified management of container energy storage equipment.

Description

Technical Field

[0001] The present application belongs to the technical field of energy storage system management, and specifically relates to a temperature control method and system for energy storage equipment. Background Art

[0002] Battery energy storage systems store and release energy through electrochemical conversion: during charging, electrical energy is converted into chemical energy for storage, and during discharge, chemical energy is converted back into electrical energy for output. As an important implementation of battery energy storage systems, containerized energy storage systems utilize standardized containers as an integration platform, integrating core equipment such as the battery system, battery management system (BMS), environmental monitoring system, and on-site monitoring system. This integrated design gives containerized energy storage systems significant technical advantages: a modular structure provides high integration, multiple protection mechanisms ensure system safety, and intelligent temperature control enhances environmental adaptability. Leveraging these advantages, the system demonstrates exceptional application value in scenarios such as frequency and peak regulation on the power supply side, load regulation on the grid side, and emergency power supply on the user side, and is becoming an increasingly important component of the modern energy system.

[0003] Prior art (invention patent publication number CN 118825504 B) discloses a temperature control method and device for an energy storage system, specifically relating to the field of energy storage system management technology. The method obtains a first time-temperature curve, an aging coefficient of a target battery pack, and the current ambient temperature of the target battery pack. Traffic flow in a second time window is then predicted. A temperature influence coefficient is derived based on the ambient temperature, aging coefficient, and predicted traffic flow. A second time-temperature curve within the second time window is derived based on the first time-temperature curve. The amplitude of the second time-temperature curve is adjusted based on the temperature influence coefficient to obtain a final predicted temperature set. The temperature within the final predicted temperature set is then compared with a preset temperature threshold. The temperature of the target battery pack is controlled based on the comparison result. This method can relatively accurately predict the temperature of the energy storage system over a period of time in the future and promptly implement control measures. This method provides a more timely response when controlling the temperature of the energy storage system, minimizing the impact on battery performance and safety.

[0004] The above-mentioned temperature control method predicts the temperature of the energy storage device according to the characteristics of the energy storage device and controls the temperature control device according to the predicted temperature to achieve control of the operating temperature of the battery pack; existing energy storage devices are stored in containers, and multiple temperature control devices, that is, multiple refrigeration and air conditioners are generally installed in the container; for example, a refrigeration and air conditioner is installed in each of the four corners. The current air conditioning control method is often unified control; however, due to the cooling effect of the refrigeration and air conditioning, the temperature in each area of the container is uneven, which has different effects on the energy storage devices in each area of the container. Over a long period of time, the performance of the energy storage devices in each area will be inconsistent, which makes it difficult to uniformly manage the container energy storage devices; therefore, a temperature control method and system for energy storage devices are needed. Summary of the Invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a temperature control method and system for energy storage equipment, which is used to solve the technical problem that the existing temperature control method for energy storage equipment causes uneven temperature distribution in the space where the energy storage equipment is stored, resulting in inconsistent performance of energy storage equipment in different areas; and further leading to difficulty in unified management of container energy storage equipment.

[0006] To achieve the above objectives, the first aspect of the present application provides a temperature control method for an energy storage device, comprising:

[0007] Step 1: Obtain the location information and device information of each energy storage device and temperature control device in the energy storage device warehouse;

[0008] Step 2: Divide the energy storage equipment warehouse into several temperature control areas based on location information and equipment information;

[0009] Step 3: Obtain the set acquisition signal, and collect the temperature detection value of each temperature control area based on the acquisition signal;

[0010] Step 4: Generate a temperature control scheme for controlling each temperature control device based on the temperature detection value; the temperature control scheme includes a temperature control scheme for controlling the temperature to return to normal and a balance control scheme for controlling the temperature balance inside the energy storage device compartment.

[0011] This application divides the energy storage equipment warehouse into several temperature control zones based on the location information and device information of each energy storage device and temperature control device in the energy storage equipment warehouse, and then generates a targeted control plan for each temperature control device based on the temperature detection value of each temperature control zone. This ensures that the temperature between each temperature control zone in the energy storage equipment warehouse is consistent, thereby achieving a uniform temperature distribution in the energy storage equipment warehouse, and ensuring consistent performance of the energy storage devices in each zone, thereby facilitating the unified management of container energy storage equipment.

[0012] Preferably, the acquisition signal is obtained by: obtaining the external temperature and the operating parameters of each energy storage device in real time; the operating parameters include charging voltage or discharging voltage, charging power or discharging power, etc.;

[0013] Determine whether the operating parameters of each energy storage device have changed. If so, generate a collection signal; if not, when the difference between the external temperature and the previously set reference temperature is greater than the set temperature change threshold, generate a collection signal; and use the external temperature as the current reference temperature. Preferably, the energy storage device compartment is divided into several temperature control areas based on the location information and device information, including:

[0014] Build a digital twin model of the energy storage equipment warehouse based on the location and device information of each energy storage device and temperature control device;

[0015] The numerical twin model of the energy storage equipment warehouse is gridded to obtain several grid areas; the operation of each temperature control device is simulated in the digital twin model to obtain the temperature change rate of each grid area; based on the temperature change rate of each grid area, the grid areas are merged to obtain several temperature control areas.

[0016] Preferably, the digital twin model of the energy storage device warehouse is constructed based on the location information and device information of each energy storage device and temperature control device, including:

[0017] Extracting the appearance features and physical features from the corresponding device information of each energy storage device and temperature control device. The appearance features refer to the external shape information of the energy storage device or temperature control device, including size and shape. The physical features refer to the electrical characteristics of the energy storage device or temperature control device and the electrical characteristics of some components, including the type and electrical characteristics of the components and the electrical characteristics of the device. Construct a digital twin model of the corresponding energy storage device or temperature control device based on the appearance features and physical characteristics.

[0018] Acquire characteristic data of the energy storage device warehouse; the characteristic data includes the size, shape, and wall material of the energy storage device warehouse; and construct a digital twin model of the energy storage device warehouse based on the characteristic data, the digital twin models corresponding to each energy storage device and temperature control device, and the location information corresponding to each energy storage device and temperature control device.

[0019] Preferably, simulating the operation of each temperature control device in the digital twin model to obtain the temperature change rate of each grid area includes:

[0020] Obtaining a plurality of working gears of each temperature control device; arranging and combining the working gears of each temperature control device to obtain a plurality of gear control groups;

[0021] Use the digital twin model to simulate the working gears corresponding to each temperature control device under each gear control group; obtain the temperature change rate of each grid area within the set time.

[0022] Preferably, the grid areas are merged based on the temperature change values of the grid areas to obtain a plurality of temperature control areas, including:

[0023] The temperature change rate of the grid area under each gear control group is obtained and the temperature change rate is integrated into a feature vector according to a set order; the feature vector of each grid area is clustered to obtain a number of clusters; and the grid areas belonging to the same cluster are divided into the same temperature control area.

[0024] Preferably, the method further comprises generating temperature variation characteristics of each gear control group according to the clustering clusters;

[0025] Obtain the cluster center of the cluster cluster corresponding to each temperature control area, and use the cluster center as the characteristic change rate of the temperature control area under each corresponding gear control group; integrate the characteristic change rates corresponding to each temperature control area under each gear control group into the temperature change characteristics of the gear control group in a set order.

[0026] Preferably, generating the temperature control scheme for controlling each temperature control device based on the temperature detection value includes:

[0027] Obtain the temperature detection value of each temperature control area; determine whether there is a temperature detection value greater than the set temperature threshold;

[0028] If yes, the temperature detection value greater than the temperature threshold is marked as a control temperature value, and a temperature control scheme for controlling the control temperature value to return to normal is generated based on each control temperature value;

[0029] If not, the difference between the maximum and minimum values of the temperature detection values is obtained; when the difference is greater than the set equilibrium difference, a balanced control scheme for regulating the temperature equilibrium inside the energy storage device compartment is generated based on each temperature test value;

[0030] The temperature control scheme includes a temperature regulation scheme and a balance regulation scheme.

[0031] Preferably, generating the temperature control scheme based on each control temperature value includes:

[0032] S1: Acquire various control temperature values, number the control temperature values in descending order, and use the temperature control area corresponding to the smallest numbered control temperature value as the target temperature control area;

[0033] S2: Obtain the characteristic change rate of the target temperature control area in each gear control group; sort the gear control groups in descending order of the characteristic change rate;

[0034] S3: Selecting a previously set number of gear control groups as the gear control groups for the next round of screening;

[0035] S4: Increment the number by one to obtain the next round number, and determine whether the number is greater than the total number of the control temperature values; if so, use the gear control group as a candidate gear control group and proceed to S5; if not, use the temperature control area corresponding to the control temperature value of the number as the target temperature control area and proceed to S2;

[0036] S5: Obtain characteristic change rates of each temperature control area corresponding to the non-regulated temperature value in each candidate gear control group; calculate the variance of each characteristic change rate, and select the candidate gear control group with the smallest variance as the temperature regulation solution.

[0037] Preferably, generating the balance control scheme based on each temperature test value includes:

[0038] The expected temperature change rate corresponding to each temperature control area is calculated based on the difference between each temperature detection value and the set reference temperature;

[0039] Integrate each predicted temperature change rate into a predicted temperature change feature according to a set order;

[0040] Obtain the temperature change characteristics of each gear control group; calculate the Euclidean distance between each temperature change characteristic and the expected temperature change characteristic as the first selection factor between the temperature change characteristic and the expected temperature change characteristic; obtain the maximum difference between the change rates of each characteristic in each gear control group as the second selection factor between the temperature change characteristic and the expected temperature change characteristic; introduce the selection factor one and the selection factor two into the set comprehensive evaluation function to obtain the selection score corresponding to the temperature change characteristic and the expected temperature change characteristic, and select the gear control group with the largest score as the balanced control scheme.

[0041] On the other hand, the present application also provides an energy storage device temperature control system, comprising: a data acquisition module, a region division module, a temperature control module, an acquisition signal generation module, a temperature control device, a temperature acquisition device, and a database;

[0042] Area division module: obtains the location information and device information of each energy storage device and temperature control device in the energy storage device warehouse; divides the energy storage device warehouse into several temperature control areas based on the location information and device information;

[0043] Data acquisition module: used to obtain the external temperature and the working parameters of the energy storage device, as well as the set acquisition signal. Based on the acquisition signal, the temperature detection value of each temperature control area is collected through the temperature acquisition device connected to it;

[0044] Temperature control module: generates a temperature control scheme for controlling each temperature control device based on the temperature detection value; controls the temperature control device according to the temperature control scheme;

[0045] The temperature control scheme includes a temperature control scheme for controlling the temperature to return to normal and a balance control scheme for controlling the temperature balance inside the energy storage equipment compartment;

[0046] Acquisition signal generation module: determines whether the operating parameters of each energy storage device have changed. If so, an acquisition signal is generated; if not, when the difference between the external temperature and the previously set reference temperature is greater than the set temperature change threshold, an acquisition signal is generated; and the external temperature is used as the current reference temperature.

[0047] Compared with the prior art, the present invention has the following advantages:

[0048] 1. This application divides the energy storage equipment warehouse into several temperature control zones based on the location information and device information of each energy storage device and temperature control device in the energy storage equipment warehouse, and then generates a control plan for each temperature control device based on the temperature detection value of each temperature control zone. This ensures that the temperature of each temperature control zone in the energy storage equipment warehouse is consistent, thereby achieving a uniform temperature distribution in the energy storage equipment warehouse, and ensuring that the performance of the energy storage equipment in each zone is consistent, thereby facilitating the unified management of container energy storage equipment.

[0049] 2. This application controls the temperature control device to maintain the temperature inside the energy storage bin at a value as close to the outside temperature as possible, ensuring that the energy storage device bin is maintained at a suitable temperature while saving the energy consumed by the temperature control device as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0051] Figure 1 Schematic diagram of the steps of the temperature control method in this application;

[0052] Figure 2 This is a partial flow chart of the temperature control method in this application;

[0053] Figure 3 This is a schematic diagram of the module connection of the temperature control system in this application. DETAILED DESCRIPTION

[0054] The following will clearly and completely describe the technical solutions of this application in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0055] See also Figure 1 The first aspect of the present application provides a method for controlling the temperature of an energy storage device, comprising:

[0056] Step 1: Obtain the location information and device information of each energy storage device and temperature control device in the energy storage device warehouse; the energy storage device in this embodiment is a battery pack; the energy storage device warehouse is a container for storing battery packs;

[0057] Step 2: Based on the location information and device information, the energy storage device compartment is divided into several temperature control zones. The temperature control zones are the result of dividing the area within the container according to the control effect of the temperature control device. The temperature changes within the temperature control zones are basically consistent. In this embodiment, the temperature control device is a refrigeration air conditioner.

[0058] Step 3: Obtain a set acquisition signal, and collect the temperature detection value of each temperature control area based on the acquisition signal; the temperature detection value is the temperature value collected by the temperature test equipment set in each temperature control area; the temperature test equipment is a thermometer and a temperature sensor, etc.;

[0059] Step 4: Generate a temperature control scheme for controlling each temperature control device based on the temperature detection value; the temperature control scheme is a scheme for controlling the operating gear of each temperature control device, and the gear is the set working mode of each temperature control device, such as strong cooling, weak cooling and cooling, etc., and can also be expressed in the form of temperature, such as 20°C, 21°C and 22°C, etc.; the temperature control scheme includes a temperature control scheme for controlling the temperature to return to normal and a balance control scheme for controlling the temperature balance inside the energy storage device compartment.

[0060] This embodiment divides the energy storage device warehouse into several temperature control zones based on the location and device information of each energy storage device and temperature control device in the energy storage device warehouse. Targeted control schemes for each temperature control device are then generated based on the temperature detection values of each temperature control zone. This ensures consistent temperatures across the temperature control zones within the energy storage device warehouse, resulting in a uniform temperature distribution within the energy storage device warehouse and consistent performance of the energy storage devices in each zone, facilitating unified management of containerized energy storage equipment.

[0061] The collected signals are obtained in the following ways: real-time acquisition of the external temperature and the operating parameters of each energy storage device; the operating parameters include charging voltage or discharging voltage, charging power or discharging power, etc.;

[0062] Determine whether the operating parameters of each energy storage device have changed. If so, generate an acquisition signal; if not, when the difference between the external temperature and the last set reference temperature is greater than the set temperature change threshold, generate an acquisition signal; and use the external temperature as the current reference temperature.

[0063] This embodiment determines whether the temperature control device needs to be adjusted by judging the operating status of the energy storage device. When the operating status of any one or more energy storage devices changes, such as an increase or decrease in charging or discharging power or voltage, the temperature inside the energy storage device compartment will change. At this time, it is necessary to ensure a balanced temperature inside the energy storage device compartment, and the operating status of each temperature control device needs to be readjusted. When the external temperature changes, the energy required to maintain the temperature inside the energy storage device compartment at the original temperature increases. In order to maintain the temperature inside the energy storage device compartment at a value as close as possible to the external temperature, it is also necessary to readjust the operating status of each temperature control device to ensure that the energy storage device compartment is maintained at an appropriate temperature while minimizing the energy consumed by the temperature control device.

[0064] The energy storage equipment warehouse is divided into several temperature control areas based on location information and equipment information, including:

[0065] A digital twin model of the energy storage device warehouse is constructed based on the location information and device information of each energy storage device and temperature control device. Specifically, the appearance features and physical features of the corresponding device information of each energy storage device and temperature control device are extracted. The appearance features are the appearance information of the energy storage device or temperature control device, including size, shape, etc. The physical features are the overall electrical characteristics of the energy storage device or temperature control device and the electrical characteristics of some devices, including the type of device, electrical characteristics and electrical characteristics of the device. The digital twin model of the corresponding energy storage device or temperature control device is constructed based on the appearance features and physical characteristics.

[0066] Acquire characteristic data of the energy storage device warehouse; the characteristic data includes the size, shape, and wall material of the energy storage device warehouse; and construct a digital twin model of the energy storage device warehouse based on the characteristic data, the digital twin models corresponding to each energy storage device and temperature control device, and the location information corresponding to each energy storage device and temperature control device.

[0067] The numerical twin model of the energy storage device warehouse is gridded to obtain several grid areas; specifically, the size of the grid area is set according to experience, and the size of the grid area in this embodiment is set according to the effective range of the temperature sensor; the operation of each temperature control device is simulated in the digital twin model to obtain the temperature change rate of each grid area; the temperature change rate is the temperature change rate within a set time when the digital twin model starts to simulate the operation of the temperature control device and the temperature of each grid area begins to change; based on the temperature change rate of each grid area, each grid area is merged to obtain several temperature control areas.

[0068] The operation of each temperature control device is simulated in the digital twin model to obtain the temperature change rate of each grid area, including:

[0069] Obtain several operating gears of each temperature control device; permutate and combine the operating gears of each temperature control device to obtain several gear control groups; the gear control groups are obtained by permuting and combining the operating gears of each temperature control device, that is, the control models; comprehensive coverage includes the operation of a single temperature control device, as well as the combination of multiple temperature control devices operating in combination;

[0070] Use the digital twin model to simulate the working gears corresponding to each temperature control device under each gear control group; obtain the temperature change rate of each grid area within the set time.

[0071] The grid regions are merged based on the temperature change values of the grid regions to obtain a plurality of temperature control regions, including:

[0072] The temperature change rate of the grid area under each gear control group is obtained and the temperature change rate is integrated into a feature vector according to a set order; the feature vector of each grid area is clustered to obtain a number of clusters; and the grid areas belonging to the same cluster are divided into the same temperature control area.

[0073] In this embodiment, various grid areas are merged through cluster analysis to obtain several temperature control areas. The temperature changes of various grid areas in a temperature control area are similar under the same gear control group; this facilitates subsequent regulation according to the influence of temperature control equipment on different areas; it can be understood that at least one temperature testing device is installed in the area corresponding to each temperature control area.

[0074] It also includes generating temperature change characteristics of each gear control group based on the cluster cluster; obtaining the cluster center of the cluster cluster corresponding to each temperature control area, and using the cluster center as the characteristic change rate of the temperature control area under each corresponding gear control group; integrating the characteristic change rates corresponding to each temperature control area under each gear control group into the temperature change characteristics of the gear control group according to the set order; it can be understood that the setting order in this embodiment is the same setting order, that is, the arrangement method of the same gear control group.

[0075] This embodiment integrates the characteristic temperature change rates of each temperature control area to obtain temperature change characteristics for temperature change conditions of different temperature control areas under the same gear control group, which facilitates subsequent screening of the gear control group.

[0076] Generating the temperature control scheme for controlling each temperature control device based on the temperature detection value, including: obtaining the temperature detection value of each temperature control area; determining whether there is a temperature detection value greater than a set temperature threshold;

[0077] If yes, the temperature detection value greater than the temperature threshold is marked as the control temperature value, and a temperature control scheme for controlling the control temperature value to return to normal is generated based on each control temperature value; the temperature control scheme is to control each temperature control device to adjust the temperature of the abnormal temperature control area to a normal range;

[0078] If not, obtain the difference between the maximum and minimum values in the temperature detection value; when the difference is greater than the set equilibrium difference, generate an equilibrium control scheme for regulating the temperature equilibrium inside the energy storage equipment warehouse based on each temperature test value; the equilibrium control scheme is to control each temperature control device to adjust the temperature of each temperature control area to a consistent temperature; the temperature control scheme includes a temperature control scheme and a equilibrium control scheme.

[0079] This embodiment sets different temperature control schemes by judging whether the temperature values of each temperature control area are abnormal and whether the temperature difference between different temperature control areas is too large. When the temperature of a temperature control area is abnormal, this system prioritizes the temperature of the abnormal area and makes the abnormal temperature return to normal as quickly as possible. When the temperature difference between various temperature control areas is too large, this system controls the gears of different temperature control devices to achieve temperature balance in the energy storage equipment compartment.

[0080] See also Figure 2 , generating the temperature control scheme based on each control temperature value, including:

[0081] S1: Obtain each control temperature value, number the control temperature values in descending order, and number them in ascending order; and use the temperature control area corresponding to the control temperature value with the smallest number as the target temperature control area;

[0082] S2: Obtain the characteristic change rate of the target temperature control area in each gear control group; sort the gear control groups in descending order of the characteristic change rate;

[0083] S3: Selecting a previously set number of gear control groups as the gear control groups for the next round of screening;

[0084] S4: Increment the number by one to obtain the next round number, and determine whether the number is greater than the total number of the control temperature values; if so, use the gear control group as a candidate gear control group and proceed to S5; if not, use the temperature control area corresponding to the control temperature value of the number as the target temperature control area and proceed to S2;

[0085] S5: Obtain characteristic change rates of each temperature control area corresponding to the non-regulated temperature value in each candidate gear control group; calculate the variance of each characteristic change rate, and select the candidate gear control group with the smallest variance as the temperature regulation solution.

[0086] This embodiment sets a targeted detection scheme for the temperature control area based on the temperature detection value of the temperature control area. When the temperature detection value is abnormal, the temperature of the abnormal temperature control area needs to be reduced to the normal range as soon as possible; the temperature of the remaining areas is kept at the same change rate as much as possible, so that the temperature of each area is as consistent as possible after adjustment.

[0087] Based on each temperature test value, a balanced control plan is generated, including: calculating the expected temperature change rate corresponding to each temperature control area based on the difference between each temperature test value and the set reference temperature; setting the reference temperature to the outdoor temperature at the time of the test; it is understood that the outdoor temperature is generally within the safe operating temperature range of the battery, and using the outdoor temperature as the reference temperature facilitates energy conservation of the temperature control equipment;

[0088] Integrate each predicted temperature change rate into a predicted temperature change feature according to a set order;

[0089] Obtain the temperature change characteristics of each gear control group; calculate the Euclidean distance between each temperature change characteristic and the expected temperature change characteristic as the first selection factor between the temperature change characteristic and the expected temperature change characteristic; obtain the maximum difference between the change rates of each characteristic in each gear control group as the second selection factor between the temperature change characteristic and the expected temperature change characteristic; introduce the first selection factor and the second selection factor into a set comprehensive evaluation function to obtain the selection score corresponding to the temperature change characteristic and the expected temperature change characteristic, and select the gear control group with the largest score as the balanced control scheme; specifically, the comprehensive evaluation function is:

[0090] ;

[0091] Among them, XP is the selection score; XQ1 is the selection factor 1; XQ2 is the selection factor 2; ε1 and ε2 are proportional coefficients used to control the influence of selection factor 1 and selection factor 2 on the selection score, and the specific values are set based on experience; H() and H'() set the decreasing function, that is, the output values of H() and H'() are negatively correlated with XQ1 and are greater than zero;

[0092] The smaller the Euclidean distance between the expected temperature change characteristic and the temperature change characteristic corresponding to the gear control group, the closer the gear control group can stabilize the temperature to the reference temperature when performing temperature control on each area. The larger the variance of the maximum difference between the characteristic change rates in the gear control group, the larger the temperature change rate difference between different temperature control areas will be when the gear control group is used for control. This will cause the energy storage devices in different areas to be affected by temperature changes to be greatly different, and may cause the performance of the energy storage devices in different areas to be inconsistent. Therefore, this embodiment selects a gear control group with smaller selection factors 1 and 2 as a balanced control scheme. This ensures that the temperature change rate difference between the various areas during temperature control is not too large, and also ensures that the final controlled temperature is more energy-efficient as much as possible.

[0093] See also Figure 3 , on the other hand, the present application also provides an energy storage device temperature control system, comprising: a data acquisition module, a region division module, a temperature control module, an acquisition signal generation module, a temperature control device, a temperature acquisition device and a database;

[0094] Area division module: obtains the location information and device information of each energy storage device and temperature control device in the energy storage device warehouse; divides the energy storage device warehouse into several temperature control areas based on the location information and device information;

[0095] Data acquisition module: used to obtain the external temperature and the working parameters of the energy storage device, as well as the set acquisition signal. Based on the acquisition signal, the temperature detection value of each temperature control area is collected through the temperature acquisition device connected to it;

[0096] Temperature control module: generates a temperature control scheme for controlling each temperature control device based on the temperature detection value; controls the temperature control device according to the temperature control scheme;

[0097] The temperature control scheme includes a temperature control scheme for controlling the temperature to return to normal and a balance control scheme for controlling the temperature balance inside the energy storage equipment compartment;

[0098] Acquisition signal generation module: determines whether the operating parameters of each energy storage device have changed. If so, an acquisition signal is generated; if not, when the difference between the external temperature and the previously set reference temperature is greater than the set temperature change threshold, an acquisition signal is generated; and the external temperature is used as the current reference temperature.

[0099] Some of the data in the above formula are calculated by removing the dimensions and taking their numerical values. The formula is a formula that is closest to the actual situation obtained by software simulation of a large amount of collected data; the preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained through simulation of a large amount of data.

[0100] How this application works:

[0101] This application divides the energy storage equipment warehouse into several temperature control zones based on the location information and device information of each energy storage device and temperature control device in the energy storage equipment warehouse, and then generates a targeted control plan for each temperature control device based on the temperature detection value of each temperature control zone. This ensures that the temperature between each temperature control zone in the energy storage equipment warehouse is consistent, thereby achieving a uniform temperature distribution in the energy storage equipment warehouse, and ensuring consistent performance of the energy storage devices in each zone, thereby facilitating the unified management of container energy storage equipment.

[0102] The above embodiments are only used to illustrate the technical method of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present application.

Claims

1. A temperature control method for energy storage equipment, characterized in that: include: Step 1: Obtain the location information and device information of each energy storage device and temperature control device in the energy storage device warehouse; Step 2: Divide the energy storage equipment warehouse into several temperature control areas based on location information and equipment information; Step 3: Obtain the set acquisition signal, and collect the temperature detection value of each temperature control area based on the acquisition signal; Step 4: generating a temperature control scheme for controlling each temperature control device based on the temperature detection value; including: obtaining the temperature detection value of each temperature control area; determining whether there is a temperature detection value greater than a set temperature threshold; If yes, the temperature detection value greater than the temperature threshold is marked as a control temperature value, and a temperature control scheme for controlling the control temperature value to return to normal is generated based on each control temperature value; If not, the difference between the maximum and minimum values of the temperature detection values is obtained; when the difference is greater than the set equilibrium difference, a balanced control scheme for regulating the temperature equilibrium inside the energy storage device compartment is generated based on each temperature test value; The temperature control scheme includes a temperature control scheme and a balanced control scheme; Generating the temperature control scheme based on each control temperature value includes: S1: Acquire various control temperature values, number the control temperature values in descending order, and use the temperature control area corresponding to the smallest numbered control temperature value as the target temperature control area; S2: Obtaining characteristic change rates of the target temperature control area in each gear control group; sorting the gear control groups in descending order of characteristic change rates; the characteristic change rates are temperature change rates; S3: Selecting a set number of gear control groups as the gear control groups for the next round of screening; S4: Increment the number by one to obtain the next round number, and determine whether the number is greater than the total number of the control temperature values; if so, use the gear control group as a candidate gear control group and proceed to S5; if not, use the temperature control area corresponding to the control temperature value of the number as the target temperature control area and proceed to S2; S5: Obtain characteristic change rates of each temperature control area corresponding to the non-regulated temperature value in each candidate gear control group; calculate the variance of each characteristic change rate, and select the candidate gear control group with the smallest variance as the temperature regulation solution.

2. The energy storage device temperature control method according to claim 1, characterized in that: The energy storage device warehouse is divided into several temperature control areas based on the location information and device information, including: Build a digital twin model of the energy storage equipment warehouse based on the location and device information of each energy storage device and temperature control device; The digital twin model of the energy storage equipment warehouse is gridded to obtain several grid areas; the operation of each temperature control device is simulated in the digital twin model to obtain the temperature change rate of each grid area; and based on the temperature change rate of each grid area, the grid areas are merged to obtain several temperature control areas.

3. The energy storage device temperature control method according to claim 2, characterized in that: The digital twin model of the energy storage device warehouse is constructed based on the location information and device information of each energy storage device and temperature control device, including: Extracting the appearance features and physical features from the device information corresponding to each energy storage device and temperature control device, where the physical features are the overall electrical characteristics of the energy storage device or temperature control device and the electrical characteristics of some components; constructing a digital twin model of the corresponding energy storage device or temperature control device based on the appearance features and physical features; Acquire characteristic data of the energy storage equipment warehouse; construct a digital twin model of the energy storage equipment warehouse based on the characteristic data, the digital twin models corresponding to each energy storage device and temperature control device, and the corresponding position information of each energy storage device and temperature control device.

4. The energy storage device temperature control method according to claim 2, characterized in that: The operation of each temperature control device is simulated in the digital twin model to obtain the temperature change rate of each grid area, including: Obtaining a plurality of working gears of each temperature control device; arranging and combining the working gears of each temperature control device to obtain a plurality of gear control groups; Use the digital twin model to simulate the working gears corresponding to each temperature control device under each gear control group; obtain the temperature change rate of each grid area within the set time.

5. The energy storage device temperature control method according to claim 4, characterized in that: The grid regions are merged based on the temperature change rates of the grid regions to obtain a plurality of temperature control regions, including: The temperature change rate of the grid area under each gear control group is obtained and the temperature change rate is integrated into a feature vector according to a set order; the feature vector of each grid area is clustered to obtain a number of clusters; and the grid areas belonging to the same cluster are divided into the same temperature control area.

6. The energy storage device temperature control method according to claim 5, characterized in that: It also includes generating temperature change characteristics of each gear control group according to the clustering clusters; Obtain the cluster center of the cluster cluster corresponding to each temperature control area, and use the cluster center as the characteristic change rate of the temperature control area under each corresponding gear control group; integrate the characteristic change rates corresponding to each temperature control area under each gear control group into the temperature change characteristics of the gear control group in a set order.

7. The energy storage device temperature control method according to claim 1, characterized in that: Generating the balancing control scheme based on each temperature test value includes: The expected temperature change rate corresponding to each temperature control area is calculated based on the difference between each temperature detection value and the set reference temperature; Integrate each predicted temperature change rate into a predicted temperature change feature according to a set order; Obtain the temperature change characteristics of each gear control group; calculate the Euclidean distance between each temperature change characteristic and the expected temperature change characteristic as the first selection factor between the temperature change characteristic and the expected temperature change characteristic; obtain the maximum difference between the change rates of each characteristic in each gear control group as the second selection factor between the temperature change characteristic and the expected temperature change characteristic; introduce the selection factor one and the selection factor two into the set comprehensive evaluation function to obtain the selection score corresponding to the temperature change characteristic and the expected temperature change characteristic, and select the gear control group with the largest score as the balanced control scheme.

8. A temperature control system for an energy storage device, based on the application of a temperature control method for an energy storage device according to any one of claims 1 to 7, characterized in that: include: Data acquisition module, area division module, temperature control module, acquisition signal generation module, temperature control equipment, temperature acquisition equipment and database; Area division module: obtains the location information and device information of each energy storage device and temperature control device in the energy storage device warehouse; divides the energy storage device warehouse into several temperature control areas based on the location information and device information; Data acquisition module: used to obtain the external temperature and the working parameters of the energy storage device, as well as the set acquisition signal. Based on the acquisition signal, the temperature detection value of each temperature control area is collected through the temperature acquisition device connected to it; Temperature control module: generates a temperature control scheme for controlling each temperature control device based on the temperature detection value; controls the temperature control device according to the temperature control scheme; The temperature control scheme includes a temperature control scheme for controlling the temperature to return to normal and a balance control scheme for controlling the temperature balance inside the energy storage equipment compartment; Acquisition signal generation module: determines whether the operating parameters of each energy storage device have changed. If so, generates an acquisition signal; If not, when the difference between the outside temperature and the last set reference temperature is greater than the set temperature change threshold, a collection signal is generated; and the outside temperature is used as the reference temperature this time.

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