CN114204148A - Thermal management system, temperature control method and battery energy storage system - Google Patents
Thermal management system, temperature control method and battery energy storage system Download PDFInfo
- Publication number
- CN114204148A CN114204148A CN202111577186.3A CN202111577186A CN114204148A CN 114204148 A CN114204148 A CN 114204148A CN 202111577186 A CN202111577186 A CN 202111577186A CN 114204148 A CN114204148 A CN 114204148A
- Authority
- CN
- China
- Prior art keywords
- temperature
- management system
- fan
- battery
- energy storage
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
-
- 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
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a thermal management system of a battery energy storage system, which comprises a temperature detection device, a battery management system, a control device, an air conditioning device and a fan device, wherein the temperature detection device detects the temperature information of an energy storage battery and transmits the temperature information to the battery management system, the battery management system receives the temperature information and transmits temperature data to the control device, the control device controls the opening and closing of the air conditioning device and the operation mode during opening according to the temperature data, and outputs PWM signals corresponding to duty ratios to control the opening and closing of the fan device and the rotating speed during opening and control the operation mode during opening of the fan device. Through setting up air conditioner device and fan unit simultaneously, can be according to cooling/intensification demand, air conditioner device and fan unit are opened to the while or alternative, can realize temperature regulation better, and through PWM signal control fan unit's rotational speed, have reduced the consumption, can reduce the noise simultaneously. In addition, the invention also discloses a temperature control method of the thermal management system and a battery energy storage system.
Description
Technical Field
The invention relates to the technical field of temperature management of a battery energy storage system, in particular to a thermal management system of the battery energy storage system, a temperature control method and the battery energy storage system.
Background
With the rapid advance of new energy technologies in China, the advantages of lithium battery energy storage systems are self-evident, and the lithium battery energy storage systems are widely applied to the fields of optical storage power stations, wind storage power stations, AGC frequency modulation power stations and the like. The number of lithium batteries in the energy storage system is large, the capacity and power of the batteries are large, the structural design of the energy storage system easily causes the problems of uneven heat generation, large temperature difference between the batteries, uneven temperature distribution and the like, and further the charging and discharging performance of some batteries is weakened, the service life of the batteries is prolonged, and the capacity of the batteries is reduced.
A common battery PACK box in the energy storage system uses a fan for heat dissipation and is matched with an air conditioner for use, and the operation management of the fan and the air conditioner is of great importance for the heat dissipation of the energy storage system. The operation management of the energy storage system in the current market on the fan and the air conditioner is limited to be started or closed when the set temperature threshold is reached, and the fan and the air conditioner always work in a full-speed operation state, so that the problems of low energy utilization efficiency, high power consumption and the like of the air conditioner and the fan are caused. Because the number of PACK battery boxes of the energy storage system is large, the fan can also cause large noise of the energy storage system when running at full speed for a long time.
Disclosure of Invention
The invention aims to provide a thermal management system of a battery energy storage system, a temperature control method and the battery energy storage system so as to improve the energy utilization efficiency of an air-conditioning fan.
In order to achieve the above object, the present invention provides a thermal management system of a battery energy storage system, where the battery energy storage system includes a plurality of energy storage batteries, the thermal management system includes a temperature detection device, a battery management system, a control device, an air conditioning device, and a fan device, the temperature detection device and the control device are in communication connection with the battery management system, the fan device and the air conditioning device are in communication connection with the control device, the temperature detection device is configured to detect temperature information of the energy storage batteries and transmit the temperature information to the battery management system, the battery management system receives the temperature information and transmits temperature data to the control device, the control device controls an on/off mode and an on-off mode of the air conditioning device according to the temperature data, and outputs a PWM signal corresponding to a duty ratio to control an on/off mode and an on-off speed of the fan device, and controlling the operation mode when the fan device is started.
Preferably, the operation modes of the air conditioner include a cooling mode and a heating mode, and the operation modes of the fan device include a hot air mode and a cold air mode.
Preferably, the temperature detection device includes a plurality of temperature sensors, the plurality of temperature sensors are uniformly distributed in each region of the plurality of energy storage batteries, the battery management system is in communication connection with the plurality of temperature sensors, the battery management system receives temperature information transmitted by the plurality of temperature sensors, obtains corresponding temperature data based on the temperature information transmitted by the plurality of temperature sensors, and transmits the temperature data to the control device.
Preferably, the battery management system averages the temperature information transmitted by the plurality of temperature sensors to obtain the temperature data.
Preferably, the thermal management system comprises a plurality of battery modules, the battery modules are connected in series, each battery module comprises a battery box and a plurality of energy storage batteries accommodated in the battery box, and a plurality of temperature sensors and at least one fan device are uniformly distributed in each battery box.
Preferably, the temperature sensor is an NTC temperature sensor.
Preferably, the fan device includes a driving device and a dc fan electrically connected to the driving device, the driving device is in communication connection with the control device, and the driving device receives the PWM signal and converts the PWM signal into a corresponding voltage value to be provided to the dc fan, so as to turn on or off the dc fan and control the rotation speed of the fan device when the fan device is turned on.
Compared with the prior art, the air conditioning device and the fan device are arranged at the same time, so that the air conditioning device and the fan device can be started at the same time when the temperature needs to be quickly reduced or increased, and the air conditioning device and the fan device can be selected to be started when the temperature does not need to be quickly reduced or increased, so that the temperature can be well adjusted, and the working temperature requirement of the energy storage battery can be met; furthermore, the control device outputs PWM signals corresponding to the duty ratio according to the temperature data to control the rotating speed of the fan device, when the fan device does not need to be cooled down or heated up quickly, the fan device can be operated at a lower rotating speed, the energy utilization efficiency of the heat management system is higher, the power consumption is reduced, and meanwhile the noise can be reduced.
In order to achieve the above object, the present invention provides a temperature control method of the above thermal management system, including:
when the temperature data belong to a first temperature interval, controlling the air conditioning device to operate in a heating mode, controlling the fan device to operate in a hot air mode, and enabling the fan device to operate at full speed when the duty ratio S of the output PWM signal is 100%;
when the temperature data belong to a second temperature interval, controlling the air conditioning device to operate in a heating mode, controlling the fan device to operate in a hot air mode, and outputting a corresponding PWM signal according to a mapping relation between a preset PWM signal duty ratio and the temperature data;
when the temperature data belong to a third temperature interval, the energy storage battery is in an optimal working temperature range, the air conditioning device is controlled to be closed, the fan device is controlled to operate in a cold air mode, and corresponding PWM signals are output according to the mapping relation between the preset PWM signal duty ratio and the temperature data;
when the temperature data belong to a fourth temperature interval, controlling the air conditioner to operate in a refrigeration mode, controlling the fan device to operate in a cold air mode, and enabling the fan device to operate at full speed when the duty ratio S of the output PWM signal is 100%;
the temperature values of the first temperature interval, the second temperature interval, the third temperature interval and the fourth temperature interval are gradually increased, and the larger the duty ratio S is, the faster the rotating speed of the fan device is.
Preferably, when the temperature data belongs to the second temperature interval, S ═ log is used(Tb+1)(Tb-T +1) × 100% calculating the duty cycle of the PWM signal required to be output, wherein S represents the duty cycle, Tb represents the high end value of the second temperature interval, and T represents the temperature data; when the temperature data belongs to a third temperature interval, S-log is used(Tc-Tb)(T-Tb +1) × 100% calculating the duty cycle of the PWM signal to be output, wherein S represents the duty cycle, Tb and Tc-1 represent the low end value and the high end value of the third temperature interval, respectively, and T represents the temperature data.
Compared with the prior art, the invention controls the air conditioner and the fan device to start the corresponding operation mode or close the air conditioner and the fan device respectively in each temperature interval by dividing a plurality of temperature intervals, simultaneously controls the duty ratio of the PWM signal according to the temperature interval to which the temperature data belongs, adjusts the rotating speed of the fan device to the rotating speed suitable for the current temperature data according to the duty ratio, rationalizes the operation of the fan device, and reduces the power consumption while ensuring that the temperature of the battery energy storage system is adjusted to the ideal temperature.
In order to achieve the above object, the present invention provides a battery energy storage system including the thermal management system as described above.
Drawings
Fig. 1 is a schematic frame diagram of a thermal management system of a battery energy storage system according to an embodiment of the invention.
Fig. 2 is a schematic diagram of the distribution of temperature sensors in a battery box according to an embodiment of the present invention.
Detailed Description
In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the described embodiments without inventive effort, shall fall within the scope of protection of the invention.
The battery energy storage system of this embodiment includes a plurality of battery modules and is used for the thermal management system 100 of temperature regulation, and wherein, a plurality of battery modules series connection, each battery module includes battery box and a plurality of holding energy storage battery in the battery box, the energy storage battery series connection in each battery box. As shown in fig. 1, the thermal management system 100 includes a temperature detection device 10, a battery management system 20, a control device 30, an air conditioning device 40, and a plurality of fan devices 50, wherein the temperature detection device 10 and the control device 30 are communicatively connected to the battery management system 20, and the fan devices 50 and the air conditioning device 40 are communicatively connected to the control device 30. The temperature detection device 10 is configured to detect temperature information of the energy storage battery and transmit the temperature information to the battery management system 20, the battery management system 20 receives the temperature information and transmits temperature data to the control device 30, the control device 30 controls an on/off and an on-time operation mode of the air conditioning device 40 according to a magnitude relationship between the temperature data and a preset temperature threshold, and outputs a PWM signal corresponding to a duty ratio to control an on/off and an on-time rotation speed of the fan device 50 and to control an on-time operation mode of the fan device 50.
The operation mode of the air conditioner 40 includes a cooling mode and a heating mode, and the cooling mode may be turned on when the temperature needs to be lowered, and the heating mode may be turned on when the temperature needs to be raised; similarly, the operation modes of the fan device 50 include a hot air mode and a cold air mode, and when the temperature needs to be lowered, the cold air mode may be turned on to enable the fan device 50 to deliver cold air, and when the temperature needs to be raised, the hot air mode may be turned on to enable the fan device 50 to deliver hot air.
Each battery box is provided with a fan device 50, and cold air or hot air is conveyed to each battery box through the fan device 50, so that the temperature of the environment in the battery box is reduced; the air conditioning device 40 may be multiple, for example, multiple air conditioning devices 40 may be evenly distributed in various regions of the energy storage system to achieve temperature regulation of the overall environment of the energy storage system, and may cooperate with the fan device 50 to rapidly lower or raise the temperature.
According to the invention, the air conditioning device 40 and the fan device 50 are arranged at the same time, so that the air conditioning device 40 and the fan device 50 can be started at the same time when the temperature needs to be quickly reduced or increased, and the air conditioning device 40 and the fan device 50 can be selected to be started when the temperature does not need to be quickly reduced or increased, so that the temperature can be better regulated, and the working temperature requirement of the energy storage battery can be met; further, the control device 30 outputs the PWM signal with the corresponding duty ratio according to the magnitude relationship between the temperature data and the preset temperature threshold value to control the rotation speed of the fan device 50, so that the fan device 50 can operate at a lower rotation speed when rapid cooling or heating is not needed, the energy utilization efficiency of the thermal management system 100 is higher, the power consumption is reduced, and the noise is reduced.
The temperature detection device 10 includes a plurality of temperature sensors 11, four temperature sensors 11 (as shown in fig. 2) are uniformly distributed in each battery box, the battery management system 20 is in communication connection with the temperature sensors 11 in all the battery boxes, receives temperature information transmitted by all the temperature sensors 11, obtains corresponding temperature data based on the temperature information transmitted by the temperature sensors 11, and then transmits the temperature data to the control device 30. The temperature sensor 11 is an NTC temperature sensor, and of course, the specific form of the temperature sensor 11 is not limited in the specific implementation.
In this embodiment, the battery management system 20 averages all the received temperature information to obtain temperature data. Specifically, the battery management system 20 calculates an average value of the temperature information transmitted from the four temperature sensors 11 for each battery box, and then averages the average temperatures of all the battery boxes again to obtain temperature data. That is, the current real-time average temperature T1 of a single battery box is (Ts + Tr + Tu + Tz)/4, where Ts, Tr, Tu, Tz respectively represent temperature information transmitted by the four temperature sensors 11, and the average temperature (i.e., temperature data) T of the entire energy storage system is (Σ Tn)/n, and n is 1, 2, 3, 4.
Of course, the battery management system 20 is not limited to averaging all the received temperature information to obtain the temperature data, and in some embodiments, other calculation methods may be used to obtain the temperature data.
Referring to fig. 1, the battery management system 20 includes a plurality of collectors 21 and a controller 22 in communication connection with the plurality of collectors 21, the controller 22 is in communication connection with the control device 30, the plurality of collectors 21 correspond to a battery box respectively, each collector 21 is in communication connection with the temperature sensor 11 in the corresponding battery box, each collector 21 receives temperature information transmitted by the temperature sensor 11 in the corresponding battery box and then transmits the temperature information to the controller 22, and the controller 22 receives the temperature information transmitted by each collector 21, performs averaging to obtain corresponding temperature data, and transmits the temperature data to the control device 30.
In the embodiment shown in fig. 1, each collector 21 is in communication connection with the controller 22 through a CAN bus, the controller 22 is in communication connection with the control device 30 through an RS485 bus/CAN bus, and the control device 30 is in communication connection with each air conditioning device 40 through an RS485 bus.
As shown in fig. 1, the fan device 50 includes a driving device 51 and a dc fan 52 electrically connected to the driving device 51, the driving device 51 is connected to the control device 30 in a communication manner, the control device 30 sends a PWM signal to the driving device 51, and the driving device 51 receives the PWM signal and converts the PWM signal into a corresponding voltage value to be provided to the dc fan 52. The larger the duty ratio of the PWM signal is, the higher the voltage value supplied to the dc fan 52 is, and the greater the rotation speed of the dc fan 52 is; conversely, the smaller the duty ratio of the PWM signal, the lower the voltage value supplied to the dc fan 52 and the lower the rotational speed of the dc fan 52, and when the duty ratio of the PWM signal is 0, the voltage value supplied to the dc fan 52 becomes 0 and the dc fan 52 stops rotating (turns off).
The temperature control method of the thermal management system 100 in this embodiment sets five temperature thresholds and four temperature intervals, where the five temperature thresholds are Ta < 0 < Tb < Tc-1 < Td from small to large, and the four temperature intervals are [ Ta,0], (0, Tb ], (Tb, Tc-1], (Tc-1, Td ] from small to large, where Ta is greater than a battery low-temperature protection threshold and Td is less than a battery high-temperature protection threshold, and the temperature control method specifically includes:
when the temperature data belongs to [ Ta,0], the energy storage system is in a low temperature state at this time, the air conditioning device 40 is controlled to operate in the heating mode, the fan device 50 is controlled to operate in the hot air mode, and the duty ratio S of the output PWM signal is 100% to operate the fan device 50 at full speed, so as to realize rapid temperature rise.
When the temperature data belongs to (0, Tb)]At this time, the energy storage system is already separated from the low-temperature state, the air conditioning device 40 is controlled to operate in the heating mode, the fan device 50 is controlled to operate in the hot air mode, and the duty ratio S of the output PWM signal is log(Tb+1)(Tb-T +1) × 100%, where S represents the duty cycle, Tb represents the high end (right end) of the second temperature interval, and T represents the temperature data. Because fan assembly 50 no longer needs to operate at full power with the increase in temperature, fan assembly 50 can operate at a lower power to meet the current temperature increase requirement, using the formula S log(Tb+1)(Tb-T +1) × 100% the duty ratio S is continuously adjusted to adjust the rotation speed of the fan apparatus 50, and the smaller the temperature data T is, the larger the duty ratio S is, the larger the temperature data T is, and the smaller the duty ratio S is, and when the temperature data T is Tb, the duty ratio S is 0%, the rotation speed of the fan apparatus 50 is 0, that is, the fan apparatus 50 stops (turns off), and at the same time, the air conditioner 40 is turned off.
At a temperature data belonging to (Tb, Tc-1)]When the energy storage battery is in the optimal working temperature range, the air conditioning device 40 is controlled to be turned off, the fan device 50 is controlled to run in a cold air mode, and the duty ratio S of the output PWM signal is log(Tc-Tb)(T-Tb +1) × 100%, where S represents the duty ratio, Tb, Tc-1 represent the low end value (left end value) and the high end value (right end value) of the third temperature interval, respectively, and T represents the temperature data. Since the optimum working temperature range is maintained, the air conditioner 40 is not turned on, and only the fan unit 50 delivers cool air to reduce power consumption, and the fan unit 50 is required to be accompanied by temperature riseBoosted power operation, log, by the formula S(Tc-Tb)(T-Tb +1) × 100% the duty ratio S is continuously adjusted, so as to adjust the rotation speed of the fan device 50, the smaller the temperature data T is, the smaller the duty ratio S is, the larger the temperature data T is, the larger the duty ratio S is, and when the temperature data T is Tc-1, the duty ratio S is 100%, the fan device 50 is operated at full power, and the rotation speed is maximum.
When the temperature data belongs to (Tc-1, Td), the air conditioner 40 is controlled to operate in the cooling mode, and the fan device 50 is controlled to operate in the cooling mode, and the duty ratio S of the output PWM signal is 100% to operate the fan device 50 at full speed, so as to achieve rapid cooling.
By dividing a plurality of temperature intervals, the air conditioner 40 and the fan device 50 are respectively controlled to start corresponding operation modes or close the air conditioner 40 and the fan device 50 in each temperature interval, meanwhile, the duty ratio of the PWM signal is controlled according to the temperature interval to which the temperature data belongs, the rotating speed of the fan device 50 is adjusted to be the rotating speed suitable for the current temperature data according to the duty ratio, the operation of the fan device 50 is more reasonable, and the power consumption is reduced while the temperature of the battery energy storage system is adjusted to be the ideal temperature.
It is understood that the above temperature ranges are merely exemplary, and in particular implementations, those skilled in the art can make adjustments according to specific needs. It is only a preferred embodiment to calculate the duty ratio of the PWM signal through the log function, and in specific implementation, other functions may be used to calculate the duty ratio of the PWM signal, and a mapping relationship between the temperature data and the duty ratio may also be set to achieve obtaining the duty ratio according to the real-time temperature data, as long as the duty ratio of the PWM signal is adaptively adjusted according to the increase and decrease of the temperature, so as to achieve adjusting the rotation speed of the fan apparatus 50 to the proper rotation speed.
In some embodiments, Ta is-20, Tb is 20, Tc-1 is 35, and Td is 45, although this is not a limitation in the specific implementation.
In conclusion, the invention reasonably controls the rotation speed of the fan device 50 of the energy storage system and the opening and closing of the air conditioning device 40 according to the temperature by monitoring the temperature of the energy storage system in real time, can effectively solve the problems of low energy utilization efficiency, high noise, high power consumption and the like, realizes the dynamic balance of the environmental temperature in the energy storage system, ensures the safe and reliable operation of the energy storage system, and prolongs the service life of the energy storage system.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (10)
1. A thermal management system of a battery energy storage system comprises a plurality of energy storage batteries and is characterized in that the thermal management system comprises a temperature detection device, a battery management system, a control device, an air conditioning device and a fan device, wherein the temperature detection device and the control device are in communication connection with the battery management system, the fan device and the air conditioning device are in communication connection with the control device, the temperature detection device is used for detecting temperature information of the energy storage batteries and transmitting the temperature information to the battery management system, the battery management system receives the temperature information and transmits temperature data to the control device, the control device controls the on-off and on-off operation modes of the air conditioning device according to the temperature data and outputs PWM signals corresponding to duty ratios to control the on-off and on-off rotation speeds of the fan device, and controlling the operation mode when the fan device is started.
2. The thermal management system of claim 1, wherein the operating modes of the air conditioning device include a cooling mode and a heating mode, and the operating modes of the fan device include a hot air mode and a cold air mode.
3. The thermal management system according to claim 1, wherein the temperature detecting device includes a plurality of temperature sensors, the plurality of temperature sensors are uniformly distributed in each area of the energy storage batteries, the battery management system is in communication connection with the plurality of temperature sensors, the battery management system receives temperature information transmitted by the plurality of temperature sensors, obtains corresponding temperature data based on the temperature information transmitted by the plurality of temperature sensors, and transmits the temperature data to the control device.
4. The thermal management system of claim 3, wherein the battery management system averages temperature information transmitted by the plurality of temperature sensors to obtain the temperature data.
5. The thermal management system of claim 3, wherein the thermal management system comprises a plurality of battery modules, the plurality of battery modules are connected in series, each battery module comprises a battery box and a plurality of energy storage batteries contained in the battery box, and a plurality of temperature sensors and at least one fan device are uniformly distributed in each battery box.
6. The thermal management system of claim 3, wherein said temperature sensor is an NTC temperature sensor.
7. The thermal management system of claim 1, wherein said fan assembly comprises a driving device and a dc fan electrically connected to said driving device, said driving device is communicatively connected to said control device, said driving device receives said PWM signal and converts said PWM signal into a corresponding voltage value for said dc fan to turn on or off said dc fan and to control a rotational speed of said fan assembly when turned on.
8. A method of temperature control of a thermal management system according to any of claims 1 to 7,
when the temperature data belong to a first temperature interval, controlling the air conditioning device to operate in a heating mode, controlling the fan device to operate in a hot air mode, and enabling the fan device to operate at full speed when the duty ratio S of the output PWM signal is 100%;
when the temperature data belong to a second temperature interval, controlling the air conditioning device to operate in a heating mode, controlling the fan device to operate in a hot air mode, and outputting a corresponding PWM signal according to a mapping relation between a preset PWM signal duty ratio and the temperature data;
when the temperature data belong to a third temperature interval, the energy storage battery is in an optimal working temperature range, the air conditioning device is controlled to be closed, the fan device is controlled to operate in a cold air mode, and corresponding PWM signals are output according to the mapping relation between the preset PWM signal duty ratio and the temperature data;
when the temperature data belong to a fourth temperature interval, controlling the air conditioner to operate in a refrigeration mode, controlling the fan device to operate in a cold air mode, and enabling the fan device to operate at full speed when the duty ratio S of the output PWM signal is 100%;
the temperature values of the first temperature interval, the second temperature interval, the third temperature interval and the fourth temperature interval are gradually increased, and the larger the duty ratio S is, the faster the rotating speed of the fan device is.
9. The temperature control method according to claim 8,
when the temperature data belongs to a second temperature interval, S-log is used(Tb+1)(Tb-T +1) × 100% calculating the duty cycle of the PWM signal required to be output, wherein S represents the duty cycle, Tb represents the high end value of the second temperature interval, and T represents the temperature data; when the temperature data belongs to a third temperature interval, S-log is used(Tc-Tb)(T-Tb +1) × 100% calculating the duty cycle of the PWM signal to be output, wherein S represents the duty cycle, Tb and Tc-1 represent the low end value and the high end value of the third temperature interval, respectively, and T represents the temperature data.
10. A battery energy storage system comprising a thermal management system according to any of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577186.3A CN114204148A (en) | 2021-12-20 | 2021-12-20 | Thermal management system, temperature control method and battery energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577186.3A CN114204148A (en) | 2021-12-20 | 2021-12-20 | Thermal management system, temperature control method and battery energy storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114204148A true CN114204148A (en) | 2022-03-18 |
Family
ID=80655871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111577186.3A Pending CN114204148A (en) | 2021-12-20 | 2021-12-20 | Thermal management system, temperature control method and battery energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114204148A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115657749A (en) * | 2022-09-07 | 2023-01-31 | 北京燕开新源科技有限公司 | Temperature control method and device, energy storage system, computer equipment and storage medium |
| WO2024146615A1 (en) * | 2023-01-04 | 2024-07-11 | 浙江极氪智能科技有限公司 | Thermal management system for energy storage battery pack |
-
2021
- 2021-12-20 CN CN202111577186.3A patent/CN114204148A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115657749A (en) * | 2022-09-07 | 2023-01-31 | 北京燕开新源科技有限公司 | Temperature control method and device, energy storage system, computer equipment and storage medium |
| CN115657749B (en) * | 2022-09-07 | 2024-05-03 | 北京燕开新源科技有限公司 | Temperature control method, temperature control device, energy storage system, computer equipment and storage medium |
| WO2024146615A1 (en) * | 2023-01-04 | 2024-07-11 | 浙江极氪智能科技有限公司 | Thermal management system for energy storage battery pack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114204148A (en) | Thermal management system, temperature control method and battery energy storage system | |
| CN101667042B (en) | Fan type temperature control method and device | |
| CN107317065B (en) | TEC-based power battery thermal management system and control method thereof | |
| CN204315687U (en) | Lithium-ion-power cell bag constant temp. heating management system | |
| CN109119723A (en) | Battery pack heat management system and management method | |
| CN109842117A (en) | Air conditioner load cutting method based on temperature regulating measure and state-of-charge parameter model | |
| US20120096885A1 (en) | Solar powered vehicle air-conditioning system | |
| CN105826619B (en) | Lithium-ion-power cell bag constant temperature heating management system | |
| CN107339783B (en) | Dual-system air conditioner control system | |
| CN110406351B (en) | Thermal management system for new energy vehicle | |
| CN112757866A (en) | Control method and system for whole electric truck thermal management system | |
| CN113036261A (en) | Energy storage system and temperature control method of battery system thereof | |
| CN103453688A (en) | Thermoelectric refrigerating/heating system | |
| CN101319808A (en) | Solar semiconductor water cooling air conditioning system using soil to execute heat exchange | |
| CN116505141A (en) | Thermal management control system for energy storage battery and control method thereof | |
| CN113054280B (en) | Electric vehicle heat management system cooled by waste heat utilization TEC and control method | |
| CN110957546B (en) | Device and method for active cooling system of air-cooled battery pack | |
| CN203386864U (en) | Built-in thermal management system of lithium battery pack | |
| CN112437358A (en) | Temperature control device and temperature control method for outdoor base station | |
| CN111998429A (en) | Heat exchange system of charging and exchanging station, control method of heat exchange system and charging and exchanging station | |
| CN204179180U (en) | A kind of constant-temperature battery case being applied to electric automobile | |
| CN109950644A (en) | A kind of battery pack heat management system of full Climate application | |
| CN216580237U (en) | Intelligent adjustment's car seat temperature's control system | |
| CN203242916U (en) | Air-cooling device for laser device | |
| US20230182587A1 (en) | Current control during dc fast charging |
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 |