Temperature control method and system for energy storage equipment

Abstract

The invention discloses a temperature control method and system for energy storage equipment, relates to the technical field of energy storage system management, and solves the problems that according to an existing temperature control method for the energy storage equipment, temperature distribution in a space for storing the energy storage equipment is not uniform, and the performance of the energy storage equipment in all areas is not consistent; and thus, the container energy storage equipment is difficult to manage in a unified manner. Comprising the following steps: 1, acquiring position information and equipment information of each energy storage equipment and temperature control equipment in an energy storage equipment bin; 2, performing regional division on the energy storage equipment bin based on the position information and the equipment information to obtain a plurality of temperature control regions; 3, acquiring a set acquisition signal, and acquiring the temperature detection value of each temperature control area based on the acquisition signal; 4, generating a temperature control scheme for controlling each temperature control device based on the temperature detection value; the temperature distribution in the energy storage equipment bin is uniform; and unified management of the container energy storage equipment is facilitated.

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] The battery energy storage system stores and releases energy through electrochemical conversion: when charging, it converts electrical energy into chemical energy for storage, and when discharging, it converts chemical energy into electrical energy for output. As an important form of battery energy storage system, the containerized energy storage system uses standardized containers as an integrated platform, integrating core equipment such as battery systems, battery management systems (BMS), environmental monitoring systems, and on-site monitoring systems. This integrated design gives the containerized energy storage system significant technical advantages: the modular structure brings the characteristics of high integration, multiple protection mechanisms ensure system safety, and intelligent temperature control design enhances environmental adaptability. With these advantages, the system has demonstrated excellent 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 increasingly becoming an important part of the modern energy system.

[0003] The prior art (the announcement number is CN 118825504 B invention patent) discloses a temperature control method and device for an energy storage system, which specifically relates to the field of energy storage system management technology. The first time temperature curve and the aging coefficient of the target battery pack and the current ambient temperature of the target battery pack are obtained, and then the vehicle flow in the second time window is predicted. The temperature influence coefficient is obtained according to the ambient temperature, the aging coefficient and the predicted vehicle flow. The second time temperature curve in the second time window is obtained according to the first time temperature curve, and the amplitude of the second time temperature curve is adjusted according to the temperature influence coefficient to obtain a final predicted temperature set. The temperature in the final predicted temperature set is compared with a preset temperature threshold, and the temperature of the target battery pack is controlled according to the comparison result. The temperature of the energy storage system in the future period can be predicted more accurately, and a control method can be taken in time. This method has a more timely response when controlling the temperature of the energy storage system, reducing the impact on the performance and safety of the battery.

[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; the existing energy storage devices are stored in containers, and multiple temperature control devices are generally arranged in the container, that is, multiple refrigeration air conditioners are arranged; such as a refrigeration air conditioner is arranged at each of the four corners, and the current air conditioning control method is often unified control; and due to the cooling effect of the refrigeration air conditioner, the temperature of each area in the container will be uneven, which will have different effects on the energy storage devices in each area of ​​the container, and for a long time, the performance of the energy storage devices in each area will be inconsistent, which will make 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 various areas; and further leads to the difficulty in unified management of container energy storage equipment.

[0006] To achieve the above-mentioned purpose, the first aspect of the present application provides a temperature control method for an energy storage device, comprising: Step 1: Obtain 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 the location information and equipment information; Step 3: Obtain a set acquisition signal, and collect the temperature detection value of each temperature control area based on the acquisition signal; 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 balanced control scheme for controlling the temperature balance inside the energy storage device compartment.

[0007] The present application divides the energy storage device warehouse into several temperature control areas through the location information and device information of each energy storage device and temperature control device in the energy storage device warehouse, and then generates a control scheme for each temperature control device in a targeted manner according to the temperature detection value of each temperature control area; so that the temperature between each temperature control area in the energy storage device warehouse can be consistent; thereby, the temperature distribution in the energy storage device warehouse is uniform; the performance of the energy storage devices in each area is consistent; thereby facilitating the unified management of container energy storage equipment.

[0008] Preferably, the acquisition signal is obtained by: obtaining the external temperature and the working parameters of each energy storage device in real time; the working parameters include charging voltage or discharging voltage, charging power or discharging power, etc.; Determine whether the working parameters of each energy storage device have changed. If yes, generate a collection signal; if no, when the difference between the outside temperature and the last set reference temperature is greater than the set temperature change threshold, generate a collection signal; and use the outside temperature as the reference temperature this time. Preferably, 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 information and equipment information of each energy storage device and temperature control device; The numerical twin model of the energy storage equipment warehouse is gridded to obtain a number of 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, each grid area is merged to obtain a number of temperature control areas.

[0009] 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: Extract the appearance features and physical features from the corresponding device information of each energy storage device and temperature control device, where the appearance features are the shape information of the energy storage device or temperature control device, including size, shape, etc., and the physical features are the regular 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; construct a digital twin model of the corresponding energy storage device or temperature control device based on the appearance features and physical characteristics; 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.

[0010] 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: Obtaining a number of working gears of each temperature control device; arranging and combining the working gears of each temperature control device to obtain a number 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.

[0011] Preferably, the grid regions are merged based on the temperature change values ​​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 vectors of each grid area are clustered to obtain a plurality of clusters; and the grid areas belonging to the same cluster are divided into the same temperature control area.

[0012] Preferably, it also includes generating temperature variation characteristics of each gear control group according to the clustering clusters; The cluster center of the cluster cluster corresponding to each temperature control area is obtained, and the cluster center is used as the characteristic change rate of the temperature control area under each corresponding gear control group; the characteristic change rates corresponding to each temperature control area under each gear control group are integrated into the temperature change characteristics of the gear control group in a set order.

[0013] Preferably, generating the temperature control scheme for controlling each temperature control device based on the temperature detection value includes: Obtain the temperature detection value of each temperature control area; determine whether there is a temperature detection value greater than the 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 to return to normal is generated based on each control temperature value; If not, the difference between the maximum and minimum values ​​in 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.

[0014] Preferably, generating the temperature control scheme based on each control temperature value includes: S1: Acquire various control temperature values, number the temperature control values ​​in descending order, and the numbers are incremented; and the temperature control area corresponding to the control temperature with the smallest number is used as the target temperature control area; 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; S3: Selecting a previously set number of gear control groups as the gear control groups for the next round of screening; S4: Add one to the number to obtain the number of the next round, and determine whether the number is greater than the total number of the regulated temperature values; if yes, use the gear control group as a candidate gear control group; proceed to S5; if no, use the temperature control area corresponding to the regulated temperature 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 use the candidate gear control group with the smallest variance as the temperature regulation scheme.

[0015] Preferably, generating the balanced control scheme based on each temperature test value includes: The estimated 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; Acquire 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; acquire 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 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.

[0016] On the other hand, the present application also provides a temperature control system for an energy storage device, including: 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; 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, and 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: generating a temperature control scheme for controlling each temperature control device based on the temperature detection value; controlling 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 balanced control scheme for controlling the temperature inside the energy storage device bin; Acquisition signal generation module: determines whether the working parameters of each energy storage device have changed. If yes, generates 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, generates an acquisition signal; and uses the external temperature as the reference temperature this time.

[0017] Compared with the prior art, the beneficial effects of this application are: 1. This application divides the energy storage equipment warehouse into several temperature control areas through the location information and equipment information of each energy storage device and temperature control device in the energy storage equipment warehouse, and then generates a control scheme for each temperature control device in a targeted manner according to the temperature detection value of each temperature control area; so that the temperature between each temperature control area in the energy storage equipment warehouse can be consistent; thereby making the temperature distribution in the energy storage equipment warehouse uniform; making the performance of the energy storage equipment in each area consistent; thereby facilitating the unified management of container energy storage equipment.

[0018] 2. This application controls the temperature control device to maintain the temperature in the energy storage bin at a value that is as close to the outside temperature as possible, thereby ensuring that the energy storage device bin is maintained at a suitable temperature and saving as much energy as possible consumed by the temperature control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative work.

[0020] Figure 1 This is a schematic diagram of the steps of the temperature control method in this application; Figure 2 It is a partial flow chart of the temperature control method in this application; Figure 3 This is a schematic diagram of the module connection of the temperature control system in this application. DETAILED DESCRIPTION

[0021] The technical solution of the present application will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0022] See also Figure 1 The first aspect of the present application provides a method for controlling the temperature of an energy storage device, comprising: Step 1: Obtain 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; Step 2: Based on the location information and device information, the energy storage device warehouse is divided into several temperature control areas; the temperature control area is the result of dividing the area in the container according to the regulation effect of the temperature control device, and the temperature change in the temperature control area is basically the same; the temperature control device in this embodiment is a refrigeration air conditioner; Step 3: Obtain the 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.; 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 a 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 ,twenty one and 22 etc.; the temperature control scheme includes a temperature control scheme for controlling the temperature to return to normal and a balanced control scheme for regulating the temperature balance inside the energy storage equipment warehouse.

[0023] This embodiment divides the energy storage device warehouse into several temperature control areas according to the location information and device information of each energy storage device and temperature control device in the energy storage device warehouse, and then generates a control scheme for each temperature control device in a targeted manner according to the temperature detection value of each temperature control area; so that the temperature between each temperature control area in the energy storage device warehouse can be consistent; thus, the temperature distribution in the energy storage device warehouse is uniform; the performance of the energy storage devices in each area is consistent; thus, the unified management of container energy storage equipment is facilitated.

[0024] The acquisition signal is obtained in the following manner: real-time acquisition of the external temperature and the working parameters of each energy storage device; the working parameters include charging voltage or discharging voltage, charging power or discharging power, etc.; Determine whether the working parameters of each energy storage device have changed. If yes, generate a collection signal; if no, when the difference between the external temperature and the last set reference temperature is greater than the set temperature change threshold, generate a collection signal; and use the external temperature as the reference temperature this time.

[0025] This embodiment determines whether the temperature control device needs to be adjusted by judging the working state of the energy storage device; when the working state of any one or more energy storage devices changes, such as the charging or discharging power or voltage increases or decreases, the temperature in the energy storage device bin will change; at this time, it is necessary to ensure the temperature balance in the energy storage device bin, and it is necessary to readjust the working state of each temperature control device; when the external temperature changes, the energy required to maintain the temperature in the energy storage device bin at the original temperature will increase. In order to maintain the temperature in the energy storage device bin at a value that is as close to the external temperature as possible, it is also necessary to readjust the working state of each temperature control device to ensure that the energy storage device bin is maintained at a suitable temperature and the energy consumed by the temperature control device is saved as much as possible.

[0026] The energy storage equipment warehouse is divided into several temperature control areas based on location information and equipment information, including: 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 in the device information corresponding to each energy storage device and temperature control device are extracted, wherein the appearance features are the shape information of the energy storage device or the temperature control device, including size, shape, etc., and the physical features are the overall electrical characteristics of the energy storage device or the temperature control device and the electrical characteristics of some devices, including the type of device, electrical characteristics and electrical characteristics of the device, etc.; a digital twin model of the corresponding energy storage device or temperature control device is constructed according to the appearance features and physical characteristics; 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.

[0027] The numerical twin model of the energy storage device warehouse is rasterized to obtain a number of 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 starts to change; based on the temperature change rate of each grid area, each grid area is merged to obtain a number of temperature control areas.

[0028] 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: Obtain several working gears of each temperature control device; arrange and combine the working gears of each temperature control device to obtain several gear control groups; the gear control groups are obtained by arranging and combining the working gears of each temperature control device, that is, the control models; comprehensive coverage includes the operation of a single temperature control device and the combination of multiple temperature control devices operating in combination; 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.

[0029] Based on the temperature change values ​​of each grid area, each grid area is merged to obtain a plurality of temperature control areas, 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 vectors of each grid area are clustered to obtain a plurality of clusters; and the grid areas belonging to the same cluster are divided into the same temperature control area.

[0030] 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 is convenient for subsequent regulation according to the influence of the 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.

[0031] It also includes generating temperature change characteristics of each gear control group according to 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.

[0032] This embodiment integrates the characteristic temperature change rates of each temperature control area to obtain the temperature change characteristics of different temperature control areas under the same gear control group, which facilitates the subsequent screening of the gear control group.

[0033] Generating the temperature control scheme for controlling each temperature control device based on the temperature detection value includes: obtaining the temperature detection value of each temperature control area; judging 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 the control temperature value, and a temperature control scheme for controlling the control temperature 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; 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 device bin 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.

[0034] This embodiment sets different temperature control schemes by judging whether the temperature value of each temperature control area is 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 gives priority to processing the temperature of the abnormal area and makes the abnormal temperature return to normal as quickly as possible. When the temperature difference between each temperature control area is too large, this system controls the gears of different temperature control devices to achieve temperature balance in the energy storage equipment warehouse.

[0035] See also Figure 2 , generating the temperature control scheme based on each control temperature value, including: S1: Obtain each control temperature value, and number the temperature control values ​​in order from large to small, with the numbers increasing; and use the temperature control area corresponding to the control temperature with the smallest number as the target temperature control area; 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; S3: Selecting a previously set number of gear control groups as the gear control groups for the next round of screening; S4: Add one to the number to obtain the number of the next round, and determine whether the number is greater than the total number of the regulated temperature values; if yes, use the gear control group as a candidate gear control group; proceed to S5; if no, use the temperature control area corresponding to the regulated temperature 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 use the candidate gear control group with the smallest variance as the temperature regulation scheme.

[0036] This embodiment sets a targeted detection scheme for the temperature control area according to 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 a normal range as soon as possible; the temperatures of the remaining areas are kept at the same rate of change as much as possible, so that the temperatures of each area are as consistent as possible after adjustment.

[0037] Generate a balanced control scheme based on each temperature test value, including: calculate the expected temperature change rate corresponding to each temperature control area based on the difference between each temperature detection value and the set reference temperature; set the reference temperature to the outdoor temperature during the detection; it can be understood that the outdoor temperature is generally within the safe range of the battery operating temperature, and using the outdoor temperature as the reference temperature is convenient for saving energy of the temperature control equipment; Integrate each predicted temperature change rate into a predicted temperature change feature according to a set order; The temperature change characteristics of each gear control group are obtained; the Euclidean distance between each temperature change characteristic and the expected temperature change characteristic is calculated as the first selection factor between the temperature change characteristic and the expected temperature change characteristic; the maximum difference between the change rates of each characteristic in each gear control group is obtained as the second selection factor between the temperature change characteristic and the expected temperature change characteristic; the selection factor one and the selection factor two are introduced into the set comprehensive evaluation function to obtain the selection score corresponding to the temperature change characteristic and the expected temperature change characteristic, and the gear control group with the largest selection score is selected as the balanced control scheme; specifically, the comprehensive evaluation function is:

[0038] 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, which are used to adjust the influence of the selection factor 1 and the selection factor 2 on the selection score. The specific values ​​are set according to experience; H() and H'() set the decreasing function, that is, the output value of H() and H'() is negatively correlated with XQ1 and is greater than zero; 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 temperature to the reference temperature can be stabilized by the gear control group 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 when the gear control group is used for control, which will cause the energy storage devices in different areas to be affected by temperature changes to be 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 factor one and selection factor two as a balanced control scheme; it ensures that the temperature change rate difference between the temperature control areas is not too large, and at the same time, it also ensures that the final control temperature is more energy-efficient as much as possible.

[0039] See also Figure 3 , On the other hand, the present application also provides a temperature control system for energy storage equipment, including: 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; 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, and 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: generating a temperature control scheme for controlling each temperature control device based on the temperature detection value; controlling 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 balanced control scheme for controlling the temperature inside the energy storage device bin; Acquisition signal generation module: determines whether the working parameters of each energy storage device have changed. If yes, generates 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, generates an acquisition signal; and uses the external temperature as the reference temperature this time.

[0040] Part of the data in the above formula is calculated by removing the dimension and taking its numerical value. The formula is a formula 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.

[0041] How this application works: The present application divides the energy storage device warehouse into several temperature control areas through the location information and device information of each energy storage device and temperature control device in the energy storage device warehouse, and then generates a control scheme for each temperature control device in a targeted manner according to the temperature detection value of each temperature control area; so that the temperature between each temperature control area in the energy storage device warehouse can be consistent; thereby, the temperature distribution in the energy storage device warehouse is uniform; the performance of the energy storage devices in each area is consistent; thereby facilitating the unified management of container energy storage equipment.

[0042] 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, a person of ordinary skill in the art should understand that the technical method of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present application.

Claims

1. A method for controlling the temperature of an energy storage device, characterized in that: include: Step 1: Obtain 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 the location information and equipment information; Step 3: Obtain a set acquisition signal, and collect the temperature detection value of each temperature control area based on the acquisition signal; 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 balanced control scheme for controlling the temperature balance inside the energy storage device compartment.

2. A method for controlling the temperature of an energy storage device 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 the device information, including: Build a digital twin model of the energy storage equipment warehouse based on the location information and equipment information of each energy storage device and temperature control device; The numerical twin model of the energy storage equipment warehouse is gridded to obtain a number of 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, each grid area is merged to obtain a number of temperature control areas.

3. A method for controlling the temperature of an energy storage device 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: Extract the appearance features and physical features of each energy storage device and temperature control device from the corresponding device information, and build 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 device warehouse; construct a digital twin model of the energy storage device warehouse according to 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. A method for controlling the temperature of an energy storage device 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 number of working gears of each temperature control device; arranging and combining the working gears of each temperature control device to obtain a number 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. A method for controlling the temperature of an energy storage device according to claim 4, characterized in that: Based on the temperature change values ​​of each grid area, each grid area is merged to obtain a plurality of temperature control areas, 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 vectors of each grid area are clustered to obtain a plurality of clusters; and the grid areas belonging to the same cluster are divided into the same temperature control area.

6. A method for controlling the temperature of an energy storage device according to claim 5, characterized in that: It also includes generating temperature variation characteristics of each gear control group according to the clustering clusters; The cluster center of the cluster cluster corresponding to each temperature control area is obtained, and the cluster center is used as the characteristic change rate of the temperature control area under each corresponding gear control group; the characteristic change rates corresponding to each temperature control area under each gear control group are integrated into the temperature change characteristics of the gear control group in a set order.

7. A method for controlling the temperature of an energy storage device according to claim 6, characterized in that: Generating the temperature control scheme for controlling each temperature control device based on the temperature detection value includes: Obtain the temperature detection value of each temperature control area; determine whether there is a temperature detection value greater than the 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 to return to normal is generated based on each control temperature value; If not, the difference between the maximum and minimum values ​​in 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.

8. The energy storage device temperature control method according to claim 7, characterized in that: Generating the temperature control scheme based on each control temperature value includes: S1: Acquire various control temperature values, number the temperature control values ​​in descending order, and the numbers are incremented; and the temperature control area corresponding to the control temperature with the smallest number is used as the target temperature control area; 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; S3: Selecting a previously set number of gear control groups as the gear control groups for the next round of screening; S4: Add one to the number to obtain the number of the next round, and determine whether the number is greater than the total number of the regulated temperature values; if yes, use the gear control group as a candidate gear control group; proceed to S5; if no, use the temperature control area corresponding to the regulated temperature 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 use the candidate gear control group with the smallest variance as the temperature regulation scheme.

9. The energy storage device temperature control method according to claim 7, characterized in that: Generating the balanced control scheme based on each temperature test value includes: The estimated 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; Acquire 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; acquire 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 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.

10. A temperature control system for energy storage equipment, based on the application of a temperature control method for energy storage equipment according to any one of claims 1 to 9, 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, and 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: generating a temperature control scheme for controlling each temperature control device based on the temperature detection value; controlling 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 balanced control scheme for controlling the temperature inside the energy storage device bin; Acquisition signal generation module: determines whether the working parameters of each energy storage device have changed, and 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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