Temperature control method and device of energy storage box, energy storage box and storage medium

Abstract

The application discloses a temperature control method and device of an energy storage box, the energy storage box and a storage medium. The method comprises the following steps: acquiring the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box; calculating the target refrigeration temperature and the target heating temperature according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage; and controlling the air conditioner in the energy storage box according to the target refrigeration temperature and the target heating temperature. The target refrigeration temperature and the target heating temperature can be dynamically adjusted according to the running state (the working current and the working voltage) of the energy storage box and the temperature of the battery cell on the basis of the basic refrigeration temperature and the basic heating temperature, so that the temperature of the battery cell is prevented from being too high or too low, the service life of the energy storage box is prolonged, and the power consumption of the air conditioner is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage systems, in particular to a temperature control method and device of an energy storage box, the energy storage box and a storage medium. BACKGROUND

[0002] The temperature control system of the energy storage box is located in the energy storage container, mainly including an air conditioner. The air conditioner is used to adjust the temperature of the battery module during storage and operation. The current scheme generally selects the temperature in the energy storage container corresponding to the maximum available capacity of the battery cluster as the set temperature of the temperature control system. The set temperature of the temperature control system cannot be dynamically adjusted with the temperature change of the battery cell in the battery module, which increases the power consumption of the temperature control system. In addition, when the temperature of the battery cell is too high, it will seriously affect the service life of the energy storage box. Therefore, how to reduce the power consumption of the temperature control system and prolong the service life of the energy storage box is a problem to be solved. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the purpose of the present application is to propose a temperature control method and device of an energy storage box, the energy storage box and a storage medium.

[0004] The temperature control method of the energy storage box according to the present application, the energy storage box comprises a plurality of battery modules connected in series, each battery module comprises a plurality of battery cells, the method comprises: obtaining the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box; calculating the target refrigeration temperature and the target heating temperature according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage; controlling the air conditioner in the energy storage box according to the target refrigeration temperature and the target heating temperature.

[0005] In addition, the temperature control method of the energy storage box according to the present application can also have the following additional technical features:

[0006] Further, the target refrigeration temperature and the target heating temperature are calculated according to the temperature of each of the battery cells, the base refrigeration temperature and the base heating temperature, the current working current and the current working voltage, including: determining a maximum battery cell temperature and a minimum battery cell temperature according to the temperature of each of the battery cells, and determining a current operating power of the energy storage tank according to the current working current and the current working voltage; calculating a first temperature rise and a first target temperature difference corresponding to the maximum battery cell temperature, and calculating a second temperature rise and a second target temperature difference corresponding to the minimum battery cell temperature; calculating the target refrigeration temperature according to the maximum battery cell temperature, the base refrigeration temperature, the first temperature rise, the first target temperature difference and the current operating power; and calculating the target heating temperature according to the minimum battery cell temperature, the base heating temperature, the second temperature rise, the second target temperature difference and the current operating power.

[0007] Further, the target refrigeration temperature is calculated according to the maximum battery cell temperature, the base refrigeration temperature, the first temperature rise, the first target temperature difference and the current operating power, including:

[0008] C set = C b -P*T P -D t1 *T d -E C1 *T e ,

[0009] wherein C set is the target refrigeration temperature, C b is the base refrigeration temperature, P is a ratio of the current operating power to a maximum allowed power, T P is a power temperature coefficient, D t1 is the first temperature rise, T d is a temperature rise coefficient, E C1 is the first target temperature difference, and T e is a target temperature difference coefficient.

[0010] Further, the target heating temperature is calculated according to the minimum battery cell temperature, the base heating temperature, the second temperature rise, the second target temperature difference and the current operating power, including:

[0011] H set = H b -P*T P -D t2 *T d +E C2 *T e ,

[0012] wherein Hset is the target heating temperature, H b is the base heating temperature, P is the ratio of the current operating power to the maximum allowed power, T P is the power temperature coefficient, D t2 is the second temperature rise, T d is the temperature rise coefficient, E C2 is the second target temperature difference, T e is the target temperature difference coefficient.

[0013] Further, the air conditioner in the energy storage tank is controlled according to the target cooling temperature and the target heating temperature, including: when the ambient temperature in the energy storage tank is lower than the target heating temperature, controlling the air conditioner to operate in heating mode; when the ambient temperature in the energy storage tank is higher than the target cooling temperature, controlling the air conditioner to operate in cooling mode.

[0014] Further, the base cooling temperature and the base heating temperature are the cooling temperature and the heating temperature of the air conditioner when the battery module is in a silent state.

[0015] According to the temperature control method of the energy storage tank, the temperature of each battery cell in the energy storage tank, the base cooling temperature and the base heating temperature, the current working current and the current working voltage of the energy storage tank are obtained, the target cooling temperature and the target heating temperature are calculated according to the temperature of each battery cell, the base cooling temperature and the base heating temperature, the current working current and the current working voltage, and the air conditioner in the energy storage tank is controlled according to the target cooling temperature and the target heating temperature. The target cooling temperature and the target heating temperature can be dynamically adjusted according to the operating state (working current and working voltage) of the energy storage tank and the temperature of the battery cell on the basis of the base cooling temperature and the base heating temperature, so as to prevent the temperature of the battery cell from being too high or too low, prolong the service life of the energy storage tank, and reduce the power consumption of the air conditioner.

[0016] In view of the above problems, the present application further provides a temperature control device for an energy storage tank, comprising: an acquisition module configured to acquire the temperature of each battery cell in the energy storage tank, the base cooling temperature and the base heating temperature, the current working current and the current working voltage of the energy storage tank; a calculation module configured to calculate the target cooling temperature and the target heating temperature according to the temperature of each battery cell, the base cooling temperature and the base heating temperature, the current working current and the current working voltage; and a control module configured to control the air conditioner in the energy storage tank according to the target cooling temperature and the target heating temperature.

[0017] The temperature control device of the energy storage box according to the embodiment of the present application can obtain the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box, calculate the target refrigeration temperature and the target heating temperature according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage, and control the air conditioner in the energy storage box according to the target refrigeration temperature and the target heating temperature, so that the target refrigeration temperature and the target heating temperature can be dynamically adjusted on the basis of the basic refrigeration temperature and the basic heating temperature according to the running state (the working current and the working voltage) of the energy storage box and the temperature of the battery cell, the temperature of the battery cell is prevented from being too high or too low, the service life of the energy storage box is prolonged, and the power consumption of the air conditioner is reduced.

[0018] In view of the above problems, the present application further provides an energy storage box, which comprises the temperature control device of the energy storage box according to any one of the above embodiments.

[0019] The energy storage box according to the embodiment of the present application can obtain the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box, calculate the target refrigeration temperature and the target heating temperature according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage, and control the air conditioner in the energy storage box according to the target refrigeration temperature and the target heating temperature, so that the target refrigeration temperature and the target heating temperature can be dynamically adjusted on the basis of the basic refrigeration temperature and the basic heating temperature according to the running state (the working current and the working voltage) of the energy storage box and the temperature of the battery cell, the temperature of the battery cell is prevented from being too high or too low, the service life of the energy storage box is prolonged, and the power consumption of the air conditioner is reduced.

[0020] In view of the above problems, the present application further provides an electronic device, which comprises a processor and a memory; the memory is used for storing a computer program; and the processor is used for executing the temperature control method of the energy storage box according to any one of the above embodiments according to the computer program.

[0021] The electronic device according to the embodiment of the present application can obtain the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box, calculate the target refrigeration temperature and the target heating temperature according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage, and control the air conditioner in the energy storage box according to the target refrigeration temperature and the target heating temperature, so that the target refrigeration temperature and the target heating temperature can be dynamically adjusted on the basis of the basic refrigeration temperature and the basic heating temperature according to the running state (the working current and the working voltage) of the energy storage box and the temperature of the battery cell, the temperature of the battery cell is prevented from being too high or too low, the service life of the energy storage box is prolonged, and the power consumption of the air conditioner is reduced.

[0022] In view of the above problems, the application further provides a computer readable storage medium, wherein the computer readable storage medium stores a temperature control program of an energy storage box, and the temperature control program of the energy storage box is executed by a processor to implement the temperature control method of the energy storage box according to any one of the above embodiments.

[0023] The temperature control program of the energy storage box stored on the computer readable storage medium according to the embodiment of the application is executed by the processor to obtain the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box, calculate the target refrigeration temperature and the target heating temperature according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage, and control the air conditioner in the energy storage box according to the target refrigeration temperature and the target heating temperature, so that the target refrigeration temperature and the target heating temperature can be dynamically adjusted according to the running state (working current and working voltage) of the energy storage box and the temperature of the battery cell on the basis of the basic refrigeration temperature and the basic heating temperature, the temperature of the battery cell is prevented from being too high or too low, the service life of the energy storage box is prolonged, and the power consumption of the air conditioner is reduced.

[0024] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the application will become apparent and be readily understood by considering the following detailed description, from which the above-mentioned aspects and advantages of the application will become apparent, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application.

[0026] Figure 1 is a flowchart of a temperature control method of an energy storage box according to an embodiment of the application;

[0027] Figure 2 is a structural schematic diagram of a temperature control device of an energy storage box according to an embodiment of the application;

[0028] Figure 3 is a structural schematic diagram of an electronic device according to an embodiment of the application. DETAILED DESCRIPTION

[0029] The embodiments of the application are described in detail below, and the embodiments described with reference to the drawings are exemplary, and the embodiments of the application are described in detail below.

[0030] The embodiments of the application are described in detail below with reference to the drawings. Figures 1-3 The temperature control method, device, energy storage box and storage medium of the energy storage box according to the embodiments of the application are described below.

[0031] The energy storage box according to the embodiments of the application comprises a plurality of battery modules connected in series, and each battery module comprises a plurality of battery cells.Figure 1 is a flow chart of a temperature control method of an energy storage box according to an embodiment of the present application. As shown in Figure 1 the temperature control method of an energy storage box comprises the following steps:

[0032] Step S1: Obtain the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box.

[0033] Specifically, the battery module in the energy storage box includes three states of charging, discharging and silent state, wherein the silent state is the state when the battery module is neither charging nor discharging; when the battery module is in the charging state or the discharging state, the energy storage box has the current working current and the current working voltage. The basic refrigeration temperature and the basic heating temperature are the refrigeration temperature and the heating temperature of the air conditioner corresponding to the battery module in the silent state, which can be pre-set and stored according to the actual situation, preferably, the value range of the basic refrigeration temperature is [21℃, 30℃], and the value range of the basic heating temperature is [10℃, 20℃].

[0034] In specific embodiments, the temperature of each battery cell in the energy storage box can be obtained by the temperature sensor arranged at the battery cell. Since the battery modules in the energy storage box are connected in series, the current working current of the energy storage box can be obtained by measuring the working current of any one battery module through the current sensor, and the current working voltage of the energy storage box can be obtained by measuring the working voltage of each battery module through the voltage sensor, and then calculating the sum of the working voltages of each battery module.

[0035] Step S2: Calculate the target refrigeration temperature and the target heating temperature according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage.

[0036] Specifically, when the battery module in the energy storage box is in the charging or discharging state, the working temperature of each battery cell is different. The embodiment of the present application calculates the target refrigeration temperature and the target heating temperature according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage when the battery module is charging or discharging, so as to dynamically adjust the target refrigeration temperature and the target heating temperature, and issue to the air conditioner, so as to dynamically adjust the environment temperature of the battery module, prevent the temperature of the battery cell from being too high, thereby prolonging the service life of the energy storage box and reducing the power consumption of the air conditioner.

[0037] Step S3: Control the air conditioner in the energy storage box according to the target refrigeration temperature and the target heating temperature.

[0038] Specifically, the target refrigeration temperature is the ambient temperature of the battery module corresponding to when the air conditioner starts refrigeration operation, and the target heating temperature is the ambient temperature of the battery module corresponding to when the air conditioner starts heating operation. The target refrigeration temperature and the target heating temperature are calculated according to the temperature of each cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage, and are issued to the air conditioner. That is, when the temperature control of the energy storage box is performed, the influence of the operating state (working current and working voltage) of the energy storage box, the temperature of the cell, the basic refrigeration temperature and the basic heating temperature on the temperature of the energy storage box is considered, the temperature of the cell is prevented from being too high, and on the basis of the basic refrigeration temperature and the basic heating temperature, the target refrigeration temperature and the target heating temperature are dynamically adjusted according to the operating state (working current and working voltage) of the energy storage box and the temperature of the cell, so as to reduce the loss of the air conditioner. It can be understood that in actual application, the temperature of each cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box can be obtained every preset time, for example, 1 min, and the target refrigeration temperature and the target heating temperature are calculated according to the temperature of each cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage. Therefore, the air conditioner in the energy storage box is controlled according to the target refrigeration temperature and the target heating temperature, so as to dynamically adjust the target refrigeration temperature and the target heating temperature according to the operating state (working current and working voltage) of the energy storage box and the temperature of the cell on the basis of the basic refrigeration temperature and the basic heating temperature, adjust the ambient temperature of the battery module, prevent the temperature of the cell from being too high, prolong the service life of the energy storage box, and reduce the power consumption of the air conditioner.

[0039] In an embodiment of the present application, the target refrigeration temperature and the target heating temperature are calculated according to the temperature of each cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage, including: determining the maximum cell temperature and the minimum cell temperature according to the temperature of each cell, and determining the current operating power of the energy storage box according to the current working current and the current working voltage; calculating the first temperature rise and the first target temperature difference corresponding to the maximum cell temperature, and calculating the second temperature rise and the second target temperature difference corresponding to the minimum cell temperature; calculating the target refrigeration temperature according to the maximum cell temperature, the basic refrigeration temperature, the first temperature rise, the first target temperature difference and the current operating power; and calculating the target heating temperature according to the minimum cell temperature, the basic heating temperature, the second temperature rise, the second target temperature difference and the current operating power.

[0040] Specifically, the current operating power of the energy storage box is related to the current heat generation state of the energy storage box, the greater the current operating power of the energy storage box, the greater the heat generation, and vice versa, the smaller the current operating power of the energy storage box, the smaller the heat generation; the temperature rise is the temperature rise ratio of the battery cell per unit time, which is related to the heat generation of the battery cell in the past period of time, the greater the first temperature rise and the second temperature rise, the greater the heat generation of the battery cell in the past period of time, and vice versa, the smaller the first temperature rise and the second temperature rise, the smaller the heat generation of the battery cell in the past period of time; the target temperature difference is the difference between the target temperature and the current temperature of the battery cell, and the first target temperature difference and the second target temperature difference are related to the temperature regulation time of the energy storage box, the greater the first target temperature difference and the second target temperature difference, the longer the temperature regulation time of the energy storage box, and vice versa, the smaller the first target temperature difference and the second target temperature difference, the shorter the temperature regulation time of the energy storage box. Since the maximum battery cell temperature is the battery cell with the highest temperature in the energy storage box, and the minimum battery cell temperature is the battery cell with the lowest temperature in the energy storage box, therefore, according to the maximum battery cell temperature, the first temperature rise and the first target temperature difference corresponding to the maximum battery cell temperature, the basic refrigeration temperature, the current operating power, the target refrigeration temperature is calculated, and according to the minimum battery cell temperature, the second temperature rise and the second target temperature difference corresponding to the minimum battery cell temperature, the basic heating temperature, the current operating power, the target heating temperature is calculated, which can prevent the battery cell in the energy storage box from being too high or too low, so that the battery module is in a suitable temperature range; and when the battery module is in a suitable temperature range, the target refrigeration temperature and the target heating temperature are adjusted at any time, which can reduce the power consumption of the air conditioner.

[0041] In an embodiment of the present application, the target refrigeration temperature is calculated according to the maximum battery cell temperature, the basic refrigeration temperature, the first temperature rise, the first target temperature difference and the current operating power, comprising:

[0042] C set =C b -P*T P -D t1 *T d -E C1 *T e ,

[0043] Wherein, C set is the target refrigeration temperature, C b is the basic refrigeration temperature, P is the ratio of the current operating power to the maximum allowed power, T P is the power temperature coefficient, D t1 is the first temperature rise, T d is the temperature rise coefficient, E C1 is the first target temperature difference, T e is the target temperature difference coefficient.

[0044] Specifically, when the battery module is charging and discharging, the target refrigeration temperature is adjusted on the basis of the basic refrigeration temperature, the current operating power of the energy storage box, the first temperature rise corresponding to the maximum battery cell temperature, and the first target temperature difference. It can be understood that when the current operating power of the energy storage box is large, and / or the first temperature rise is large, and / or the first target temperature difference is large, the heat generation of the energy storage box itself is large, which will make the target refrigeration temperature have a downward trend, so that the air conditioner is more likely to refrigerate, and the time for the battery module to reach the appropriate temperature range is shortened, thereby preventing the battery cell temperature from being too high and prolonging the service life of the energy storage box. It should be noted that the power temperature coefficient, the temperature rise coefficient, and the target difference coefficient are pre-calibrated and stored through experiments.

[0045] In an embodiment of the present application, the target heating temperature is calculated according to the minimum battery cell temperature, the basic heating temperature, the second temperature rise, the second target temperature difference, and the current operating power, including:

[0046] H set = H b -P*T P -D t2 *T d +E C2 *T e ,

[0047] H set is the target heating temperature, H b is the basic heating temperature, P is the ratio of the current operating power to the maximum allowed power, T P is the power temperature coefficient, D t2 is the second temperature rise, T d is the temperature rise coefficient, E C2 is the second target temperature difference, T e is the target temperature difference coefficient.

[0048] Specifically, when the battery module is charging and discharging, the target heating temperature is adjusted on the basis of the basic heating temperature, the current operating power of the energy storage box, the second temperature rise corresponding to the minimum battery cell temperature, and the second target temperature difference. It can be understood that when the current operating power of the energy storage box is large, and / or the first temperature rise is large, and / or the second target temperature difference is small, the heat generation of the energy storage box itself is large, which will make the target heating temperature have a downward trend, so that the air conditioner is less likely to heat, and the time for the battery module to reach the appropriate temperature range is shortened to prevent the battery cell temperature from being too low, thereby prolonging the service life of the energy storage box. It should be noted that the power temperature coefficient, the temperature rise coefficient, and the target difference coefficient are pre-calibrated and stored through experiments.

[0049] In one embodiment of the present application, the air conditioner in the energy storage box is controlled according to the target cooling temperature and the target heating temperature, including: when the ambient temperature in the energy storage box is lower than the target heating temperature, controlling the air conditioner to heat; when the ambient temperature in the energy storage box is higher than the target cooling temperature, controlling the air conditioner to cool.

[0050] Specifically, the ambient temperature in the energy storage box can be obtained by a sensor, when the ambient temperature in the energy storage box is lower than the target heating temperature, controlling the air conditioner to heat until the ambient temperature in the energy storage box reaches the difference between the target heating temperature and the target heating temperature hysteresis, and then controlling the air conditioner to stop heating; when the ambient temperature in the energy storage box is higher than the target cooling temperature, controlling the air conditioner to cool until the ambient temperature in the energy storage box reaches the difference between the target cooling temperature and the target cooling temperature hysteresis, and then controlling the air conditioner to stop cooling.

[0051] According to the temperature control method of the energy storage box, the temperature of each battery cell in the energy storage box, the basic cooling temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box are obtained, the target cooling temperature and the target heating temperature are calculated according to the temperature of each battery cell, the basic cooling temperature and the basic heating temperature, the current working current and the current working voltage, and the air conditioner in the energy storage box is controlled according to the target cooling temperature and the target heating temperature. On the basis of the basic cooling temperature and the basic heating temperature, the target cooling temperature and the target heating temperature are dynamically adjusted according to the running state (working current and working voltage) of the energy storage box and the temperature of the battery cell, so as to prevent the temperature of the battery cell from being too high or too low, prolong the service life of the energy storage box, and reduce the power consumption of the air conditioner.

[0052] Further embodiments of the present application also disclose a temperature control device of an energy storage box, Figure 2 is a structural schematic diagram of the temperature control device of the energy storage box according to one embodiment of the present application, as Figure 2 shown, the device 10 comprises an acquisition module 11, a calculation module 12 and a control module 13. Wherein, the acquisition module 11 is used for obtaining the temperature of each battery cell in the energy storage box, the basic cooling temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box; the calculation module 12 is used for calculating the target cooling temperature and the target heating temperature according to the temperature of each battery cell, the basic cooling temperature and the basic heating temperature, the current working current and the current working voltage; the control module 13 is used for controlling the air conditioner in the energy storage box according to the target cooling temperature and the target heating temperature.

[0053] In one embodiment of the present application, the calculating module 12 calculates the target cooling temperature and the target heating temperature according to the temperature of each battery cell, the base cooling temperature and the base heating temperature, the current working current and the current working voltage, including: determining the maximum battery cell temperature and the minimum battery cell temperature according to the temperature of each battery cell, and determining the current operating power of the energy storage tank according to the current working current and the current working voltage; calculating the first temperature rise and the first target temperature difference corresponding to the maximum battery cell temperature, and calculating the second temperature rise and the second target temperature difference corresponding to the minimum battery cell temperature; calculating the target cooling temperature according to the maximum battery cell temperature, the base cooling temperature, the first temperature rise, the first target temperature difference and the current operating power; and calculating the target heating temperature according to the minimum battery cell temperature, the base heating temperature, the second temperature rise, the second target temperature difference and the current operating power.

[0054] In one embodiment of the present application, the calculating module 12 calculates the target cooling temperature according to the maximum battery cell temperature, the base cooling temperature, the first temperature rise, the first target temperature difference and the current operating power, including:

[0055] C set = C b -P*T P -D t1 *T d -E C1 *T e ,

[0056] wherein, C set is the target cooling temperature, C b is the base cooling temperature, P is the ratio of the current operating power to the maximum allowed power, T P is the power temperature coefficient, D t1 is the first temperature rise, T d is the temperature rise coefficient, E C1 is the first target temperature difference, and T e is the target temperature difference coefficient.

[0057] In one embodiment of the present application, the calculating module 12 calculates the target heating temperature according to the minimum battery cell temperature, the base heating temperature, the second temperature rise, the second target temperature difference and the current operating power, including:

[0058] H set = H b -P*T P -D t2 *T d +E C2 *T e ,

[0059] wherein, H set is the target heating temperature, H bT is a basic heating temperature, P is a ratio of a current operating power to a maximum allowed power, T P D is a power temperature coefficient, T t2 T is a second temperature rise, T d E is a temperature rise coefficient, T C2 T is a second target temperature difference, T e T is a target temperature difference coefficient.

[0060] In an embodiment of the present application, the power temperature coefficient, the temperature rise coefficient and the target difference coefficient are pre-calibrated through experiments.

[0061] In an embodiment of the present application, the control module 13 controls the air conditioner in the energy storage box according to the target cooling temperature and the target heating temperature, including: when the ambient temperature in the energy storage box is lower than the target heating temperature, controlling the air conditioner to operate in heating mode; and when the ambient temperature in the energy storage box is higher than the target cooling temperature, controlling the air conditioner to operate in cooling mode.

[0062] It should be noted that the temperature control device of the energy storage box in the embodiment of the present application is similar to the specific implementation mode of the temperature control method of the energy storage box in the embodiment of the present application when controlling the temperature of the energy storage box, and specific reference can be made to the description in the temperature control method of the energy storage box. In order to reduce redundancy, it will not be described here.

[0063] According to the temperature control device of the energy storage box in the embodiment of the present application, by acquiring the temperature of each battery cell in the energy storage box, the basic cooling temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box, calculating the target cooling temperature and the target heating temperature according to the temperature of each battery cell, the basic cooling temperature and the basic heating temperature, the current working current and the current working voltage, and controlling the air conditioner in the energy storage box according to the target cooling temperature and the target heating temperature, the target cooling temperature and the target heating temperature can be dynamically adjusted according to the running state (working current and working voltage) of the energy storage box and the temperature of the battery cell on the basis of the basic cooling temperature and the basic heating temperature, preventing the temperature of the battery cell from being too high or too low, prolonging the service life of the energy storage box, and reducing the power consumption of the air conditioner.

[0064] Further embodiments of the present application also disclose an energy storage box, comprising: the temperature control device of the energy storage box according to any one of the above embodiments.

[0065] It should be noted that the specific implementation mode of the energy storage box in the embodiment of the present application is similar to the specific implementation mode of the temperature control method of the energy storage box in the embodiment of the present application when controlling the temperature, and specific reference can be made to the description in the temperature control method of the energy storage box. In order to reduce redundancy, it will not be described here.

[0066] According to the energy storage box provided in the embodiment of the present application, the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box are obtained, the target refrigeration temperature and the target heating temperature are calculated according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage, and the air conditioner in the energy storage box is controlled according to the target refrigeration temperature and the target heating temperature, so that the target refrigeration temperature and the target heating temperature can be dynamically adjusted according to the running state (working current and working voltage) of the energy storage box and the temperature of the battery cell on the basis of the basic refrigeration temperature and the basic heating temperature, the temperature of the battery cell is prevented from being too high or too low, the service life of the energy storage box is prolonged, and the power consumption of the air conditioner is reduced.

[0067] A further embodiment of the present application also discloses an electronic device, such as Figure 3 As shown in the figure, the device includes a processor 1000 and a memory 2000; wherein the memory 2000 is used to store a computer program; the processor 1000 is used to execute the temperature control method of the energy storage box according to any one of the above embodiments.

[0068] According to the electronic device provided in the embodiment of the present application, the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box are obtained, the target refrigeration temperature and the target heating temperature are calculated according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage, and the air conditioner in the energy storage box is controlled according to the target refrigeration temperature and the target heating temperature, so that the target refrigeration temperature and the target heating temperature can be dynamically adjusted according to the running state (working current and working voltage) of the energy storage box and the temperature of the battery cell on the basis of the basic refrigeration temperature and the basic heating temperature, the temperature of the battery cell is prevented from being too high or too low, the service life of the energy storage box is prolonged, and the power consumption of the air conditioner is reduced.

[0069] Wherein, the processor 1000 mentioned above can be one or more, Figure 3 For example, the processor 1000 in the embodiment.

[0070] As shown in the figure, the device includes a processor 1000 and a memory 2000; wherein the memory 2000 is used to store a computer program; the processor 1000 is used to execute the temperature control method of the energy storage box according to any one of the above embodiments. Figure 3 As shown in the figure, the device includes a processor 1000 and a memory 2000; wherein the memory 2000 is used to store a computer program; the processor 1000 is used to execute the temperature control method of the energy storage box according to any one of the above embodiments.

[0071] In addition, the logic instructions in the memory 2000 described above can be implemented in the form of software function units and sold or used as independent products, and can be stored in a computer readable storage medium.

[0072] The memory 2000 as a computer readable storage medium can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the application. The processor 1000 executes the software programs, instructions and modules stored in the memory 2000, thereby performing functional applications and data processing, that is, realizing the temperature control method of the energy storage tank in the method embodiment described above.

[0073] The memory 2000 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required by a function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 2000 can include a high-speed random access memory, and can also include a non-volatile memory.

[0074] The technical solution of the embodiment of the application can be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes one or more instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiment of the application. The aforementioned storage medium can be a non-transitory storage medium, including a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, etc. various media that can store program codes, or can be a transitory storage medium.

[0075] A further embodiment of the application also discloses a computer readable storage medium, and the computer readable storage medium stores a temperature control program of an energy storage tank. The temperature control program of the energy storage tank is executed by a processor to realize the temperature control method of the energy storage tank as described in any of the above embodiments.

[0076] The computer readable storage medium according to the embodiment of the present application, the temperature control program of the energy storage box stored thereon is executed by the processor, the temperature of each battery cell in the energy storage box, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage of the energy storage box are obtained, the target refrigeration temperature and the target heating temperature are calculated according to the temperature of each battery cell, the basic refrigeration temperature and the basic heating temperature, the current working current and the current working voltage, and the air conditioner in the energy storage box is controlled according to the target refrigeration temperature and the target heating temperature, the target refrigeration temperature and the target heating temperature can be dynamically adjusted according to the running state (working current and working voltage) of the energy storage box and the temperature of the battery cell on the basis of the basic refrigeration temperature and the basic heating temperature, the temperature of the battery cell is prevented from being too high or too low, the service life of the energy storage box is prolonged, and the power consumption of the air conditioner is reduced.

[0077] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example.

[0078] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A temperature control method for an energy storage tank, characterized in that, The energy storage box includes multiple battery modules connected in series, each battery module including multiple battery cells, and the method includes: The temperature, basic cooling temperature and basic heating temperature of each cell in the energy storage box, the current operating current and the current operating voltage of the energy storage box are obtained. The target cooling temperature and target heating temperature are calculated based on the temperature of each of the battery cells, the base cooling temperature and the base heating temperature, the current operating current and the current operating voltage; The air conditioner in the energy storage box is controlled according to the target cooling temperature and the target heating temperature; The step of calculating the target cooling temperature and target heating temperature based on the temperature of each battery cell, the base cooling temperature and the base heating temperature, the current operating current and the current operating voltage includes: The maximum and minimum cell temperatures are determined based on the temperature of each cell, and the current operating power of the energy storage tank is determined based on the current operating current and the current operating voltage. Calculate a first temperature rise and a first target temperature difference corresponding to the maximum cell temperature, and calculate a second temperature rise and a second target temperature difference corresponding to the minimum cell temperature, wherein the first temperature rise is the rate of temperature increase of the cell corresponding to the maximum cell temperature per unit time, the first target temperature difference is the difference between the target temperature of the cell corresponding to the maximum cell temperature and its current temperature, the second temperature rise is the rate of temperature increase of the cell corresponding to the minimum cell temperature per unit time, and the second target temperature difference is the difference between the target temperature of the cell corresponding to the minimum cell temperature and its current temperature. The target cooling temperature is calculated based on the maximum cell temperature, the base cooling temperature, the first temperature rise, the first target temperature difference, and the current operating power; and the target heating temperature is calculated based on the minimum cell temperature, the base heating temperature, the second temperature rise, the second target temperature difference, and the current operating power. The step of calculating the target cooling temperature based on the maximum cell temperature, the baseline cooling temperature, the first temperature rise, the first target temperature difference, and the current operating power includes: C set = C b - P T P - D t1 T d - E C1 T e , Among them, C set The target cooling temperature, C b The base cooling temperature is T, P is the ratio of the current operating power to the maximum allowable power, and T is the base cooling temperature. P D is the power temperature coefficient. t1 For the first temperature rise, T d E is the temperature rise coefficient. C1 Let T be the first target temperature difference. e The target temperature difference coefficient.

2. The temperature control method for the energy storage tank according to claim 1, characterized in that, The target heating temperature is calculated based on the minimum cell temperature, the base heating temperature, the second temperature rise, the second target temperature difference, and the current operating power, including: H set = H b - P T P - D t2 T d + E C2 T e , Among them, H set H represents the target heating temperature. b The base heating temperature is T, P is the ratio of the current operating power to the maximum allowable power, and T is the base heating temperature. P D is the power temperature coefficient. t2 For the second temperature rise, T d E is the temperature rise coefficient. C2 T represents the second target temperature difference. e The target temperature difference coefficient.

3. The temperature control method for the energy storage tank according to claim 1, characterized in that, Controlling the air conditioner in the energy storage box according to the target cooling temperature and the target heating temperature includes: When the ambient temperature inside the energy storage tank is lower than the target heating temperature, the air conditioner is controlled to operate in heating mode. When the ambient temperature inside the energy storage tank is higher than the target cooling temperature, the air conditioner is controlled to operate in cooling mode.

4. The temperature control method for the energy storage tank according to claim 1, characterized in that, The base cooling temperature and the base heating temperature are the cooling and heating temperatures of the air conditioner when the battery module is in a silent state.

5. A temperature control device for an energy storage tank, characterized in that, include: The acquisition module is used to acquire the temperature of each cell in the energy storage box, the basic cooling temperature and the basic heating temperature, the current operating current and the current operating voltage of the energy storage box; The calculation module is used to calculate the target cooling temperature and the target heating temperature based on the temperature of each of the battery cells, the base cooling temperature and the base heating temperature, the current operating current and the current operating voltage; A control module is used to control the air conditioner in the energy storage box according to the target cooling temperature and the target heating temperature; The step of calculating the target cooling temperature and target heating temperature based on the temperature of each battery cell, the base cooling temperature and the base heating temperature, the current operating current and the current operating voltage includes: The maximum and minimum cell temperatures are determined based on the temperature of each cell, and the current operating power of the energy storage tank is determined based on the current operating current and the current operating voltage. Calculate a first temperature rise and a first target temperature difference corresponding to the maximum cell temperature, and calculate a second temperature rise and a second target temperature difference corresponding to the minimum cell temperature, wherein the first temperature rise is the rate of temperature increase of the cell corresponding to the maximum cell temperature per unit time, the first target temperature difference is the difference between the target temperature of the cell corresponding to the maximum cell temperature and its current temperature, the second temperature rise is the rate of temperature increase of the cell corresponding to the minimum cell temperature per unit time, and the second target temperature difference is the difference between the target temperature of the cell corresponding to the minimum cell temperature and its current temperature. The target cooling temperature is calculated based on the maximum cell temperature, the base cooling temperature, the first temperature rise, the first target temperature difference, and the current operating power; and the target heating temperature is calculated based on the minimum cell temperature, the base heating temperature, the second temperature rise, the second target temperature difference, and the current operating power. The step of calculating the target cooling temperature based on the maximum cell temperature, the baseline cooling temperature, the first temperature rise, the first target temperature difference, and the current operating power includes: C set = C b - P T P - D t1 T d - E C1 T e , Among them, C set The target cooling temperature, C b The base cooling temperature is T, P is the ratio of the current operating power to the maximum allowable power, and T is the base cooling temperature. P D is the power temperature coefficient. t1 For the first temperature rise, T d E is the temperature rise coefficient. C1 Let T be the first target temperature difference. e The target temperature difference coefficient.

6. An energy storage box, characterized in that, include: The temperature control device for the energy storage box as described in claim 5.

7. An electronic device, characterized in that, The device includes a processor and a memory; wherein the memory is used to store a computer program; and the processor is used to execute the temperature control method for the energy storage tank as described in any one of claims 1-4 according to the computer program.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a temperature control program for the energy storage box, which, when executed by a processor, implements the temperature control method for the energy storage box as described in any one of claims 1-4.

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