CN115268536A - Temperature control method of energy storage system and related device - Google Patents
Temperature control method of energy storage system and related device Download PDFInfo
- Publication number
- CN115268536A CN115268536A CN202210923023.4A CN202210923023A CN115268536A CN 115268536 A CN115268536 A CN 115268536A CN 202210923023 A CN202210923023 A CN 202210923023A CN 115268536 A CN115268536 A CN 115268536A
- Authority
- CN
- China
- Prior art keywords
- temperature
- power
- battery cell
- energy storage
- storage system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 66
- 230000033228 biological regulation Effects 0.000 claims abstract description 33
- 238000007599 discharging Methods 0.000 claims description 21
- 230000001276 controlling effect Effects 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000002596 correlated effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The application discloses temperature control method and relevant device of frequency modulation energy storage system, and energy storage system includes temperature regulation apparatus and a plurality of electric core, and this method includes: obtaining current temperatures of a plurality of battery cells; controlling a temperature adjusting device to adjust the temperature of the battery cell according to the current temperature; the power of the temperature adjusting device is determined by the temperature rise related parameter of the battery cell, the temperature rise related parameter of the battery cell is in positive correlation with the power of the temperature adjusting device, and the temperature rise related parameter of the battery cell comprises the temperature rise rate of the battery cell, the charge-discharge multiplying power of the battery cell or the charge-discharge current value of the battery cell. The power of temperature regulation device in this application is positive correlation with the temperature rise relevant parameter of electric core, has avoided temperature regulation device to reduce frequency modulation energy storage system's the highest current temperature rapidly after opening, and the temperature regulation device who causes frequently is by the condition of switching, has prolonged temperature regulation device's life-span, has promoted frequency modulation energy storage system's stability and reliability.
Description
Technical Field
The present disclosure relates to the field of electrical control, and more particularly, to a temperature control method for an energy storage system and a related device.
Background
In the working process of the energy storage system, the energy storage system can be charged, discharged and stood frequently at different multiplying powers. When the energy storage system is in a charging or discharging state, the battery core in the energy storage system releases heat, so that the temperature of the energy storage system is increased. If the energy storage system is at an inappropriate temperature for a long time, the life and efficiency of the cells in the energy storage system will be affected. Therefore, there is a need in the art for a temperature control method for an energy storage system with high reliability.
Disclosure of Invention
In order to solve the technical problem, the present application provides a temperature control method for an energy storage system, which is used for adjusting the temperature of the energy storage system.
In order to achieve the above purpose, the technical solutions provided in the embodiments of the present application are as follows:
the embodiment of the application provides a temperature control method of an energy storage system, wherein the energy storage system comprises a plurality of battery cores and a temperature adjusting device, and the method comprises the following steps:
obtaining current temperatures of a plurality of the battery cells;
controlling the temperature adjusting device to adjust the temperature of the battery cell according to the current temperature; the power of the temperature adjusting device is determined by the temperature rise related parameter of the battery cell, the temperature rise related parameter of the battery cell is in positive correlation with the power of the temperature adjusting device, and the temperature rise related parameter of the battery cell comprises the temperature rise rate of the battery cell, the charge and discharge multiplying power of the battery cell or the charge and discharge current value of the battery cell.
As a possible implementation manner, the controlling, according to the current temperature, the temperature adjusting device to adjust the temperature of the battery cell includes:
determining a highest current temperature of a plurality of current temperatures of the cells;
when the highest current temperature is larger than a first temperature threshold value, starting the temperature adjusting device to reduce the temperature of the battery cell;
and when the highest current temperature is smaller than a second temperature threshold value, closing the temperature adjusting device, wherein the second temperature threshold value is smaller than the first temperature threshold value.
As a possible implementation, the method further includes:
obtaining the heating rate of the battery cells according to the change rate of the current temperatures of the battery cells in a preset time period;
and determining the power of the temperature adjusting device according to the temperature rising rate of the battery core.
As a possible implementation manner, the determining the power of the temperature adjustment device according to the temperature rise rate of the battery cell includes:
when the temperature rise rate of the battery core is smaller than a rate threshold value, the temperature regulating device is in a first power gear;
and when the temperature rise rate of the battery core is greater than a rate threshold value, the temperature regulating device is in a second power gear.
As a possible implementation, the energy storage system is used for regulating the review of the power grid, and the method further comprises:
determining the charging and discharging multiplying power or the charging and discharging current value of the energy storage system according to the transmission power of the power grid and the load of a user on the power grid; the charging and discharging multiplying power is the ratio of the difference value between the transmission power of the power grid and the load of the user on the power grid to the capacity of the energy storage system;
and determining the power of the temperature adjusting device according to the charge-discharge multiplying power or the charge-discharge current value.
As a possible embodiment, the determining the power of the thermostat according to the charge-discharge speed includes:
when the charge-discharge multiplying power of the battery cell is smaller than a multiplying power threshold value, the temperature adjusting device is in a first power gear;
and when the charging and discharging multiplying power of the battery cell is greater than the multiplying power threshold value, the temperature adjusting device is in a second power gear.
As a possible implementation, the method further includes:
determining a lowest current temperature of a plurality of current temperatures of the cells;
and when the lowest current temperature is smaller than a third temperature threshold value, closing the temperature adjusting device, wherein the third temperature threshold value is smaller than the second temperature threshold value.
According to the temperature control method of the energy storage system, the application also provides a temperature control device of the energy storage system, the energy storage system includes a plurality of battery cells and a temperature adjustment device, and the device includes:
an obtaining module, configured to obtain current temperatures of the plurality of battery cells;
the adjusting module is used for controlling the temperature adjusting device to adjust the temperature of the battery cell according to the current temperature; the power of the temperature adjusting device is determined by the temperature rise related parameter of the battery cell, the temperature rise related parameter of the battery cell is in positive correlation with the power of the temperature adjusting device, and the temperature rise related parameter of the battery cell comprises the temperature rise rate of the battery cell, the charge-discharge multiplying power of the battery cell or the charge-discharge current value of the battery cell.
According to the temperature control method of the energy storage system, the application further provides an electronic device, which includes a processor and a memory: the memory is used for storing a computer program; the processor is used for the temperature control method of the energy storage system according to the computer program.
According to the temperature control method of the energy storage system, the application also provides a computer readable storage medium, which is characterized in that the computer readable storage medium is used for storing a computer program, and the computer program is used for executing the temperature control method of the energy storage system.
According to the technical scheme, the method has the following beneficial effects:
the embodiment of the application provides a temperature control method of an energy storage system, wherein the energy storage system is used for adjusting the frequency of a power grid, the energy storage system comprises a battery cell and a temperature adjusting device, and the method comprises the following steps: obtaining current temperatures of a plurality of battery cells; controlling a temperature adjusting device to adjust the temperature of the battery cell according to the current temperature; the power of the temperature adjusting device is determined by the temperature rise related parameter of the battery cell, the temperature rise related parameter of the battery cell is in positive correlation with the temperature adjusting device, and the temperature rise related parameter of the battery cell comprises the temperature rise rate of the battery cell, the charge-discharge multiplying power of the battery cell or the charge-discharge current value of the battery cell.
Therefore, according to the temperature control method of the energy storage system, the current temperatures of the multiple battery cells of the battery cells in the energy storage system are obtained, the temperature of the battery cells is controlled according to the current temperatures, and the problem that the service life and the efficiency of the battery cells are influenced due to overhigh current temperature of the battery cells is avoided. Moreover, the power of temperature regulation device in this application is positive correlation with the temperature rise relevant parameter of electricity core, and when the rate of rise of temperature of electricity core was lower, temperature regulation device's power was also lower, has so avoided temperature regulation device to reduce energy storage system's the highest current temperature rapidly after opening, and the temperature regulation device who causes is frequently by the condition of switching, has prolonged temperature regulation device's life-span, has promoted energy storage system's stability and reliability.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a temperature control method for an energy storage system according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a temperature control method according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another temperature control method provided in an embodiment of the present application;
fig. 4 is a schematic diagram of a temperature control device of an energy storage system according to an embodiment of the present disclosure.
Detailed Description
In order to help better understand the scheme provided in the embodiment of the present application, before the method provided in the embodiment of the present application is introduced, a scenario of an application of the scheme in the embodiment of the present application is introduced.
The grid frequency is determined by the difference between the generated power of the power generation equipment and the load of the user. When the generated power is equal to the user load, stabilizing the power grid frequency at an optimal value; when the generated power is greater than the user load, the frequency of the power grid is increased; conversely, the grid frequency decreases. In order to maintain the stability of the frequency of the power grid, the energy storage system can be used for making up a power requirement gap caused by the difference value at present, and the frequency fluctuation of the power grid is ensured to be maintained within an allowable range through the charging of the energy storage system to the power grid or the discharging of the power grid to the energy storage system.
The energy storage system itself may charge, discharge, and rest frequently at different rates. When the energy storage system is in a charging or discharging state, the battery core in the energy storage system releases heat, and the temperature of the energy storage system rises. If the energy storage system is at an inappropriate temperature for a long time, the service life and efficiency of the cells in the energy storage system will be affected. Therefore, there is a need in the art for a temperature control method for an energy storage system with high reliability.
The embodiment of the application provides a temperature control method of an energy storage system, wherein the energy storage system is used for adjusting the frequency of a power grid, the energy storage system comprises a battery cell and a temperature adjusting device, and the method comprises the following steps: obtaining current temperatures of a plurality of battery cells; controlling a temperature adjusting device to adjust the temperature of the battery cell according to the current temperature; the power of the temperature adjusting device is determined by the temperature rise related parameter of the battery core, the temperature rise related parameter of the battery core is positively correlated with the temperature adjusting device, and the temperature rise related parameter of the battery core comprises the temperature rise rate of the battery core, the charge-discharge multiplying power of the battery core or the charge-discharge current value of the battery core.
Therefore, according to the temperature control method of the energy storage system, provided by the embodiment of the application, the temperature of the battery cell is controlled by the temperature adjusting device according to the current temperatures of the battery cells by obtaining the current temperatures of the battery cells in the energy storage system, so that the problem that the service life and the efficiency of the battery cell are influenced by the overhigh current temperature of the battery cell is avoided. Moreover, the power of temperature regulation device in this application is positive correlation with the temperature rise relevant parameter of electric core, and when the rate of rise of temperature of electric core was lower, temperature regulation device's power was also lower, has avoided so that temperature regulation device to reduce energy storage system's the highest current temperature rapidly after opening, and the temperature regulation device who causes is frequently by the condition of switching, has prolonged temperature regulation device's life-span, has promoted energy storage system's stability and reliability.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the drawings are described in detail below.
Referring to fig. 1, the figure is a flowchart of a temperature control method of an energy storage system according to an embodiment of the present application.
The energy storage system comprises a plurality of battery cells and a temperature regulating device. As shown in fig. 1, a method for controlling a temperature of an energy storage system according to an embodiment of the present application includes:
s101: and obtaining the current temperatures of the plurality of battery cells.
S102: controlling a temperature adjusting device to adjust the temperature of the battery cell according to the current temperature; the power of the temperature adjusting device is determined by the temperature rise related parameter of the battery cell, the temperature rise related parameter of the battery cell is in positive correlation with the power of the temperature adjusting device, and the temperature rise related parameter of the battery cell comprises the temperature rise rate of the battery cell, the charge-discharge multiplying power of the battery cell or the charge-discharge current value of the battery cell.
It should be noted that the energy storage system provided in the embodiment of the present application may be used to adjust the frequency of a power grid or the output frequency of a power generation system, and the embodiment of the present application is not limited herein. The energy storage system may include a plurality of battery cells, and may also include one battery cell, which is not limited herein in this embodiment of the application. Each battery cell in the energy storage system can correspond to one or more temperature measurement devices, and each temperature measurement device can obtain a measurement value of the current temperature, so that the current temperatures of the plurality of battery cells can be obtained. The temperature adjusting device in the embodiment of the application can be a device with temperature adjusting capacity, such as an air conditioner or a fan.
It should be noted that, if the refrigeration rate of the energy storage system is too large, that is, the difference between the refrigeration power of the temperature adjustment device in the energy storage system and the heat release rate of the battery cell in the energy storage system is too large, the temperature of the battery cell is raised/lowered too fast, so that the temperature adjustment device is rapidly turned off after being turned on, the temperature adjustment device is frequently turned on and turned off, the service life of the temperature adjustment device is seriously affected, and the operation reliability of the temperature adjustment device is reduced. And frequent start-stops can increase the energy consumption of the temperature regulation device unit. If the system refrigeration rate is too low, namely the difference between the heat release rate of the battery cell in the energy storage system and the refrigeration power of the temperature regulating device is too large, the temperature rise/drop of the battery cell temperature is too slow, so that the battery cell temperature works at an inappropriate working temperature for a long time, and the service life and the efficiency of the battery cell are influenced.
The power of the temperature adjusting device in this application is positive correlation with the temperature rise relevant parameter of electric core, guarantees that electric core works at the temperature that suits relatively all the time, and electric core heaies up or cools down with mild speed at the in-process of operation, has promoted the life-span and the efficiency of battery. And when the rate of rise of electric core was lower, temperature regulation apparatus's power was also lower, and the temperature regulation apparatus that has so avoided after opening reduces energy storage system's the highest current temperature rapidly, and the temperature regulation apparatus who causes is the condition of frequent by the switching, has prolonged temperature regulation apparatus's life-span, has promoted energy storage system's stability and reliability. And when the heating rate of the battery core is lower, the power of the temperature adjusting device is also lower, so that the local low temperature caused by the lower temperature during large-cooling-capacity refrigeration is avoided, and the temperature uniformity of the energy storage system is improved.
As a possible implementation manner, in order to avoid damaging a battery cell due to an excessively high temperature of a certain battery cell or an excessively high current temperature of the certain battery cell, the highest current temperature of the current temperatures of the plurality of battery cells may be determined in the embodiment of the present application; and when the highest current temperature is greater than the first temperature threshold value, starting the temperature adjusting device to reduce the temperature of the battery cell. As a possible implementation, the present application may also turn off the temperature adjustment device when the highest current temperature is less than a second temperature threshold, the second temperature threshold being less than the first temperature threshold. It should be noted that when all the current temperatures obtained in the embodiment of the present application are smaller than the second temperature threshold, it is indicated that the electric core in the current energy storage system is not in an over-temperature state, and cooling is not required.
As a possible implementation manner, the lowest current temperature among the current temperatures of the plurality of battery cells may also be determined; and when the lowest current temperature is smaller than a third temperature threshold value, the temperature adjusting device is closed, and the third temperature threshold value is smaller than the second temperature threshold value. It should be noted that, when the lowest current temperature among the current temperatures of the plurality of battery cells is smaller than the third temperature threshold, it is indicated that the current temperature in the energy storage system is too low. When the temperature of the battery cell is too low, the service life of the battery cell is also affected, and at the moment, the temperature adjusting device should be turned off, so that the temperature of the battery cell is prevented from being continuously reduced or continuously kept in a state of too low temperature.
In practical application, the first temperature threshold, the second temperature threshold, and the third temperature threshold may be specifically determined according to an appropriate temperature of a battery cell in an energy storage system, and the embodiment of the present application is not limited herein. If the highest temperature among the current temperatures of the plurality of battery cells is higher than the first temperature threshold and the lowest temperature among the current temperatures of the plurality of battery cells is lower than the third temperature threshold, a contradiction between turning on and turning off the temperature adjustment device will be generated by the controller of the temperature adjustment device. To avoid this, the difference between the first temperature threshold and the third temperature threshold may be greater than the maximum of the local temperature difference in the energy storage system. As an example, the first temperature threshold may be 35 ℃ or above 35 ℃, the second temperature threshold may be 30 ℃ or above 30 ℃, and the third temperature threshold may be 20 ℃ or below 20 ℃.
As a possible implementation manner, in the embodiment of the present application, the temperature increase rate of the battery cell may also be obtained according to the change rate of the current temperatures of the multiple battery cells in a preset time period, and then the power of the temperature adjustment device is determined according to the temperature increase rate of the battery cell. In practical applications, an average value of current temperatures of a plurality of battery cells may be calculated, and a temperature increase rate of the battery cell may be calculated according to an increase of the average value in a preset time period. The power of the temperature regulation device is determined according to the heating rate of the battery core in the application, the power of the temperature regulation device can be subjected to stepless regulation according to the heating rate of the battery core, the power of the temperature regulation device can also be subjected to stepped regulation according to the heating rate of the battery core, and the embodiment of the application is not limited herein.
When the temperature adjusting device is in different power gears, the frequency of a compressor, the opening degree of an expansion valve or the rotating speed of an air supply fan of the temperature adjusting device are different. When the scheme of the application is to perform stepped adjustment on the temperature adjusting device, the power of the temperature adjusting device can be divided into a plurality of gears according to the embodiment of the application. As an example, the power of the thermostat may be split into two gears, a first power gear and a second power gear. The power corresponding to the first power gear is smaller than that corresponding to the second power gear. When the temperature rise rate of the battery core is smaller than a rate threshold value, the temperature regulating device is in a first power gear; and when the temperature rise rate of the battery cell is greater than the rate threshold value, the temperature regulating device is in a second power gear. For a better understanding of the solution provided by the present application, a specific embodiment of the temperature control method provided by the embodiments of the present application will be described below with reference to the accompanying drawings.
Referring to fig. 2, the figure is a schematic diagram of a temperature control method provided in the embodiment of the present application.
As shown in fig. 2, the temperature control method provided in the embodiment of the present application may acquire an average temperature-rise rate Vavg of the battery cells, a highest current temperature Tmax of the current temperatures of the plurality of battery cells, and a lowest current temperature Tmin of the current temperatures of the plurality of battery cells. When the maximum current temperature Tmax is greater than the first temperature threshold value T1, the thermostat is controlled to perform cooling operation in a first power gear N1. When the average heating rate Vavg of the battery cell is smaller than the rate threshold v0, the temperature adjusting device is controlled to continue to perform the cooling operation at the first power gear N1, but when the average heating rate Vavg of the battery cell is larger than the rate threshold v0, the temperature adjusting device is controlled to perform the cooling operation at the second power gear N2. When the lowest current temperature Tmin is less than the third temperature threshold T3, the thermostat is turned off. The thermostat is also switched off when the lowest current temperature Tmin is greater than the third temperature threshold T3, but the highest current temperature Tmax is less than the second temperature threshold T2.
As another possible implementation manner, when the energy storage system in the embodiment of the present application is used to adjust the frequency of the power grid, the embodiment of the present application may further determine a charging and discharging multiplying factor or a charging and discharging current value of the energy storage system according to the transmission power of the power grid and the load of the user on the power grid, and then determine the power of the temperature adjustment device according to the charging and discharging multiplying factor or the charging and discharging current value. And the charging and discharging multiplying power is the ratio of the difference value of the transmission power of the power grid and the load of the user on the power grid to the capacity of the energy storage system. It should be noted that, the charge-discharge rate and the charge-discharge current can both indicate the charge-discharge speed of the battery cell of the energy storage system, and the charge-discharge speed of the battery cell directly affects the heat release rate of the battery cell. Consequently, the power of the temperature adjusting device can be adjusted according to the charge-discharge multiplying power or the charge-discharge current, so that the refrigeration efficiency of the temperature adjusting device is consistent with the heat release rate of the battery cell, and the temperature of the battery cell in the energy storage system is kept in a stable state. The same principle, this application can also adjust temperature regulation apparatus according to the parameter of the fast of energy storage system charge-discharge speed or other instruction electricity core charges and discharges. The charge-discharge rate of the energy storage system is described as an example.
The power of the temperature adjusting device is determined according to the charging and discharging multiplying power of the energy storage system, stepless adjustment can be performed on the power of the temperature adjusting device according to the charging and discharging multiplying power of the energy storage system, and stepped adjustment can also be performed on the power of the temperature adjusting device according to the charging and discharging multiplying power of the energy storage system.
When the temperature adjusting device is in different power gears, the frequency of a compressor, the opening degree of an expansion valve or the rotating speed of an air supply fan of the temperature adjusting device are different. When the scheme of the application is to perform stepped adjustment on the temperature adjusting device, the power of the temperature adjusting device can be divided into a plurality of gears according to the embodiment of the application. As an example, the power of the thermostat may be split into two gears, a first power gear and a second power gear. The power corresponding to the first power gear is smaller than that corresponding to the second power gear. When the charging and discharging multiplying power of the energy storage system is smaller than a multiplying power threshold value, the temperature adjusting device is in a first power gear; and when the charging and discharging multiplying power of the energy storage system is greater than the multiplying power threshold value, the temperature regulating device is in a second power gear. For a better understanding of the solution provided by the present application, a specific embodiment of the temperature control method provided by the embodiments of the present application will be described below with reference to the accompanying drawings.
Referring to fig. 3, a schematic diagram of another temperature control method provided in the embodiment of the present application is shown.
As shown in fig. 3, the temperature control method provided in the embodiment of the present application may acquire an average temperature-rise rate Vavg of the battery cells, a highest current temperature Tmax of the current temperatures of the plurality of battery cells, and a lowest current temperature Tmin of the current temperatures of the plurality of battery cells. When the highest current temperature Tmax is greater than a first temperature threshold value T1, the thermostat is controlled to perform cooling operation in a first power gear N1. And when the charge-discharge multiplying power c of the energy storage system is smaller than a multiplying power threshold c0, controlling the temperature adjusting device to continuously perform refrigerating operation at a first power gear N1, but when the charge-discharge multiplying power c of the energy storage system is larger than the multiplying power threshold c0, controlling the temperature adjusting device to perform refrigerating operation at a second power gear N2. When the lowest current temperature Tmin is less than the third temperature threshold T3, the thermostat is turned off. The thermostat is also switched off when the lowest current temperature Tmin is greater than the third temperature threshold T3, but the highest current temperature Tmax is less than the second temperature threshold T2.
The energy storage system can also adopt the start and stop of the return air temperature control temperature regulation device, namely, the temperature acquisition device can be arranged at the return air inlet of the temperature control device, and the compressor is controlled to start and stop according to the return air temperature measured by the temperature measurement device and the start and stop of the temperature regulation device are controlled. However, in the energy storage system, due to the existence of frequent standing stages, the temperature change rate of the return air inlet is large, and if return air temperature control is adopted, the compressor of the temperature regulating device is frequently started and stopped.
To sum up, the temperature control method of the energy storage system provided by the embodiment of the application, the power of the temperature adjusting device is positively correlated with the temperature rise related parameter of the battery core, so that the battery core is ensured to work at a relatively suitable temperature all the time, the temperature of the battery core is increased or decreased at a gentle rate in the operation process, and the service life and the efficiency of the battery are improved. And when the rate of rise of electric core was lower, temperature regulation apparatus's power was also lower, has so avoided temperature regulation apparatus to reduce energy storage system's the highest current temperature rapidly after opening, and the temperature regulation apparatus who causes is frequently by the condition of switching, has prolonged temperature regulation apparatus's life-span, has promoted energy storage system's stability and reliability. And when the heating rate of the battery core is lower, the power of the temperature adjusting device is also lower, so that the local low temperature caused by the lower temperature during large-cooling-capacity refrigeration is avoided, and the temperature uniformity of the energy storage system is improved.
According to the temperature control method of the energy storage system provided by the embodiment, the embodiment of the application further provides a temperature control device.
Referring to fig. 4, the figure is a schematic diagram of a temperature control device of an energy storage system according to an embodiment of the present disclosure.
The energy storage system is used for adjusting the frequency of the power grid and comprises a battery cell and a temperature adjusting device. As shown in fig. 4, an embodiment of the present application provides a temperature control apparatus of an energy storage system, including:
an obtaining module 100, configured to obtain current temperatures of a plurality of battery cells;
the adjusting module 200 is configured to control the temperature adjusting device to adjust the temperature of the battery cell according to the current temperature; the power of the temperature adjusting device is determined by the temperature rise related parameter of the battery cell, the temperature rise related parameter of the battery cell is in positive correlation with the power of the temperature adjusting device, and the temperature rise related parameter of the battery cell comprises the temperature rise rate of the battery cell, the charge-discharge multiplying power of the battery cell or the charge-discharge current value of the battery cell.
According to the temperature control method of the energy storage system and the temperature control device of the energy storage system, an embodiment of the present application further provides an electronic device, where the device includes a processor and a memory: the memory is used for storing a computer program; the processor is used for executing the temperature control method of the energy storage system according to the computer program.
According to the temperature control method of the energy storage system and the temperature control device of the energy storage system, an embodiment of the application further provides a computer readable storage medium, where the computer readable storage medium is used for storing a computer program, and the computer program is used for executing the temperature control method of the energy storage system.
As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the above embodiment methods can be implemented by software plus a necessary general hardware platform. Based on such understanding, the technical solutions of the present application or portions contributing to the prior art may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the method described in the embodiments or some portions of the embodiments of the present application.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The method disclosed by the embodiment corresponds to the system disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the system part for description.
It should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing description of the disclosed embodiments will enable those skilled in the art to make or use the invention in various modifications to these embodiments, which will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for controlling the temperature of an energy storage system, wherein the energy storage system comprises a temperature regulation device and a plurality of battery cells, the method comprising:
obtaining current temperatures of a plurality of the battery cells;
controlling the temperature adjusting device to adjust the temperature of the battery cell according to the current temperature; the power of the temperature adjusting device is determined by the temperature rise related parameter of the battery cell, the temperature rise related parameter of the battery cell is in positive correlation with the power of the temperature adjusting device, and the temperature rise related parameter of the battery cell comprises the temperature rise rate of the battery cell, the charge-discharge multiplying power of the battery cell or the charge-discharge current value of the battery cell.
2. The method of claim 1, wherein the controlling the temperature adjustment device to adjust the temperature of the battery cell according to the current temperature comprises:
determining a highest current temperature of a plurality of current temperatures of the cells;
when the highest current temperature is larger than a first temperature threshold value, starting the temperature adjusting device to reduce the temperature of the battery cell;
and when the highest current temperature is smaller than a second temperature threshold value, closing the temperature adjusting device, wherein the second temperature threshold value is smaller than the first temperature threshold value.
3. The method of claim 1, further comprising:
obtaining the temperature rise rate of the battery cells according to the change rate of the current temperatures of the battery cells in a preset time period;
and determining the power of the temperature adjusting device according to the temperature rising rate of the battery core.
4. The method of claim 3, wherein determining the power of the temperature regulating device according to the rate of temperature rise of the cell comprises:
when the temperature rise rate of the battery core is smaller than a rate threshold value, the temperature regulating device is in a first power gear;
and when the temperature rise rate of the battery core is greater than a rate threshold value, the temperature regulating device is in a second power gear.
5. The method of claim 1, wherein the energy storage system is used to adjust a frequency of the power grid, the method further comprising:
determining the charging and discharging multiplying power or the charging and discharging current value of the energy storage system according to the transmission power of the power grid and the load of a user on the power grid; the charging and discharging multiplying power is the ratio of the difference value between the transmission power of the power grid and the load of the user on the power grid to the capacity of the energy storage system;
and determining the power of the temperature adjusting device according to the charge-discharge multiplying power or the charge-discharge current value.
6. The method of claim 5, wherein said determining power of said thermostat from said charge-discharge rate comprises:
when the charge-discharge multiplying power of the battery cell is smaller than a multiplying power threshold value, the temperature adjusting device is in a first power gear;
and when the charging and discharging multiplying power of the battery cell is greater than the multiplying power threshold value, the temperature regulating device is in a second power gear.
7. The method of claim 2, further comprising:
determining a lowest current temperature of a plurality of current temperatures of the cells;
and when the lowest current temperature is smaller than a third temperature threshold value, closing the temperature adjusting device, wherein the third temperature threshold value is smaller than the second temperature threshold value.
8. A temperature control device of an energy storage system, wherein the energy storage system comprises a plurality of battery cells and a temperature adjustment device, the device comprising:
an obtaining module, configured to obtain current temperatures of the plurality of battery cells;
the adjusting module is used for controlling the temperature adjusting device to adjust the temperature of the battery cell according to the current temperature; the power of the temperature adjusting device is determined by the temperature rise related parameter of the battery cell, the temperature rise related parameter of the battery cell is in positive correlation with the power of the temperature adjusting device, and the temperature rise related parameter of the battery cell comprises the temperature rise rate of the battery cell, the charge-discharge multiplying power of the battery cell or the charge-discharge current value of the battery cell.
9. An electronic device, comprising a processor and a memory:
the memory is used for storing a computer program;
the processor is configured to perform the method of any one of claims 1-7 in accordance with the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program for performing the method of any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210923023.4A CN115268536B (en) | 2022-08-02 | 2022-08-02 | Temperature control method and related device of energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210923023.4A CN115268536B (en) | 2022-08-02 | 2022-08-02 | Temperature control method and related device of energy storage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115268536A true CN115268536A (en) | 2022-11-01 |
| CN115268536B CN115268536B (en) | 2024-05-14 |
Family
ID=83746843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210923023.4A Active CN115268536B (en) | 2022-08-02 | 2022-08-02 | Temperature control method and related device of energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115268536B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115639862A (en) * | 2022-11-02 | 2023-01-24 | 江苏拓米洛环境试验设备有限公司 | Test box temperature control method, device and system |
| CN117175072A (en) * | 2023-10-30 | 2023-12-05 | 山东天瀚新能源科技有限公司 | Thermal management system and method applied to lithium ion battery pack |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709616A (en) * | 2012-05-31 | 2012-10-03 | 杭州万好万家新能源科技有限公司 | Distributed thermal management system for battery modules |
| WO2016117925A1 (en) * | 2015-01-20 | 2016-07-28 | 주식회사 제이에스영테크 | Hybrid energy storage module system |
| JP2016220477A (en) * | 2015-05-25 | 2016-12-22 | 富士電機株式会社 | Power system planning apparatus |
| CN106487011A (en) * | 2016-11-28 | 2017-03-08 | 东南大学 | A kind of based on the family of Q study microgrid energy optimization method |
| CN107332266A (en) * | 2017-08-25 | 2017-11-07 | 浙江南都电源动力股份有限公司 | User side energy-accumulating power station and its application model |
| CN107508303A (en) * | 2017-08-09 | 2017-12-22 | 国电南瑞科技股份有限公司 | A kind of modularization energy storage device towards micro-capacitance sensor is distributed rationally and control method |
| CN109614662A (en) * | 2018-11-20 | 2019-04-12 | 中国电力科学研究院有限公司 | A kind of method and system of the radiating mode of determining lithium battery group in hot emulation experiment |
| CN209029508U (en) * | 2018-11-07 | 2019-06-25 | 承德比亚迪汽车有限公司 | Temperature control system and energy-storage system for energy-storage system |
| CN110912197A (en) * | 2019-12-12 | 2020-03-24 | 佛山市思正能源技术有限公司 | Modularized household light storage system capable of automatically scheduling energy and control method |
| WO2021019444A1 (en) * | 2019-07-29 | 2021-02-04 | Eco Home As | Method and system for using second life batteries as energy storage in a renewable energy system |
| CN113285472A (en) * | 2021-04-22 | 2021-08-20 | 中国电力科学研究院有限公司 | Optimal configuration method and device of energy storage system |
| CN113394800A (en) * | 2021-05-11 | 2021-09-14 | 华为技术有限公司 | Energy storage system, temperature control method and photovoltaic power generation system |
| CN113572221A (en) * | 2021-07-05 | 2021-10-29 | 三峡大学 | Multi-target self-adaptive equalization control method for battery pack in echelon utilization |
| CN113691150A (en) * | 2021-09-07 | 2021-11-23 | 阳光电源股份有限公司 | Energy conversion system and over-temperature operation control method and control equipment thereof |
| CN114167916A (en) * | 2022-02-11 | 2022-03-11 | 为准（北京）电子科技有限公司 | Circuit board temperature adjusting method and device, electronic equipment and storage medium |
| CN114421055A (en) * | 2022-03-01 | 2022-04-29 | 重庆金康赛力斯新能源汽车设计院有限公司 | Power battery thermal management system and thermal management method |
| CN114512994A (en) * | 2022-02-25 | 2022-05-17 | 中国电力科学研究院有限公司 | Frequency modulation method, system, equipment and medium for cluster temperature control load system |
-
2022
- 2022-08-02 CN CN202210923023.4A patent/CN115268536B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709616A (en) * | 2012-05-31 | 2012-10-03 | 杭州万好万家新能源科技有限公司 | Distributed thermal management system for battery modules |
| WO2016117925A1 (en) * | 2015-01-20 | 2016-07-28 | 주식회사 제이에스영테크 | Hybrid energy storage module system |
| JP2016220477A (en) * | 2015-05-25 | 2016-12-22 | 富士電機株式会社 | Power system planning apparatus |
| CN106487011A (en) * | 2016-11-28 | 2017-03-08 | 东南大学 | A kind of based on the family of Q study microgrid energy optimization method |
| CN107508303A (en) * | 2017-08-09 | 2017-12-22 | 国电南瑞科技股份有限公司 | A kind of modularization energy storage device towards micro-capacitance sensor is distributed rationally and control method |
| CN107332266A (en) * | 2017-08-25 | 2017-11-07 | 浙江南都电源动力股份有限公司 | User side energy-accumulating power station and its application model |
| CN209029508U (en) * | 2018-11-07 | 2019-06-25 | 承德比亚迪汽车有限公司 | Temperature control system and energy-storage system for energy-storage system |
| CN109614662A (en) * | 2018-11-20 | 2019-04-12 | 中国电力科学研究院有限公司 | A kind of method and system of the radiating mode of determining lithium battery group in hot emulation experiment |
| WO2021019444A1 (en) * | 2019-07-29 | 2021-02-04 | Eco Home As | Method and system for using second life batteries as energy storage in a renewable energy system |
| CN110912197A (en) * | 2019-12-12 | 2020-03-24 | 佛山市思正能源技术有限公司 | Modularized household light storage system capable of automatically scheduling energy and control method |
| CN113285472A (en) * | 2021-04-22 | 2021-08-20 | 中国电力科学研究院有限公司 | Optimal configuration method and device of energy storage system |
| CN113394800A (en) * | 2021-05-11 | 2021-09-14 | 华为技术有限公司 | Energy storage system, temperature control method and photovoltaic power generation system |
| CN113572221A (en) * | 2021-07-05 | 2021-10-29 | 三峡大学 | Multi-target self-adaptive equalization control method for battery pack in echelon utilization |
| CN113691150A (en) * | 2021-09-07 | 2021-11-23 | 阳光电源股份有限公司 | Energy conversion system and over-temperature operation control method and control equipment thereof |
| CN114167916A (en) * | 2022-02-11 | 2022-03-11 | 为准（北京）电子科技有限公司 | Circuit board temperature adjusting method and device, electronic equipment and storage medium |
| CN114512994A (en) * | 2022-02-25 | 2022-05-17 | 中国电力科学研究院有限公司 | Frequency modulation method, system, equipment and medium for cluster temperature control load system |
| CN114421055A (en) * | 2022-03-01 | 2022-04-29 | 重庆金康赛力斯新能源汽车设计院有限公司 | Power battery thermal management system and thermal management method |
Non-Patent Citations (1)
| Title |
|---|
| 郭青龙;廉世军;: "面向储能充电桩应用的双输入变换装置", 电气应用, no. 01, 5 January 2018 (2018-01-05), pages 63 - 69 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115639862A (en) * | 2022-11-02 | 2023-01-24 | 江苏拓米洛环境试验设备有限公司 | Test box temperature control method, device and system |
| CN115639862B (en) * | 2022-11-02 | 2023-09-29 | 江苏拓米洛高端装备股份有限公司 | Method, device and system for controlling temperature of test box |
| CN117175072A (en) * | 2023-10-30 | 2023-12-05 | 山东天瀚新能源科技有限公司 | Thermal management system and method applied to lithium ion battery pack |
| CN117175072B (en) * | 2023-10-30 | 2024-03-12 | 山东天瀚新能源科技有限公司 | Thermal management system and method applied to lithium ion battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115268536B (en) | 2024-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115268536B (en) | Temperature control method and related device of energy storage system | |
| CN112519635B (en) | Control method and related device for battery thermal management | |
| JP4694614B2 (en) | Power system stabilization system | |
| CN112397748B (en) | Fuel cell system starting control method and device | |
| CN111245051B (en) | Power battery equalizing charging method and device, control equipment and storage medium | |
| JP2020022226A (en) | Battery management device, battery management method, and power storage system | |
| CN115084707A (en) | Energy consumption optimization method for liquid cooling system in battery energy storage system | |
| KR20190034960A (en) | ESS Output Control Method | |
| CN113036261A (en) | Energy storage system and temperature control method of battery system thereof | |
| JP2013504300A (en) | Using a stand-alone system connected to a battery | |
| CN113410537A (en) | Power battery charging thermal management control method and system | |
| CN116598659A (en) | Water pump control method and device for battery pack loop | |
| CN116799355A (en) | Thermal management system of immersed energy storage power station and control method thereof | |
| CN113097597B (en) | Thermal management method of energy storage system, controller and energy storage system | |
| CN116780019B (en) | Method for controlling temperature of battery cell of air-cooled energy-storage air conditioner | |
| CN113859049B (en) | Battery thermal management method, device, electronic equipment and computer readable storage medium | |
| JP2003217679A (en) | Discharging method for secondary battery, storage battery and air conditioner | |
| CN112310512B (en) | Method and system for intelligently adjusting temperature of battery | |
| CN114142499A (en) | System and method for producing hydrogen by using new energy | |
| CN115247642A (en) | Vehicle thermal management method and device and vehicle | |
| CN116572706A (en) | Air conditioner power adjustment method and system and vehicle | |
| CN116014295B (en) | Sodium ion battery energy storage module | |
| WO2024120034A1 (en) | Charging control method and apparatus | |
| CN113483479B (en) | Auxiliary service method and system combining variable frequency air conditioner and energy storage battery | |
| CN115642338A (en) | Thermal management strategy optimization method and terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |