CN111834701B - Temperature control method based on temperature difference of energy storage battery - Google Patents
Temperature control method based on temperature difference of energy storage battery Download PDFInfo
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- 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
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- H—ELECTRICITY
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- 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
- H01M10/4285—Testing apparatus
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- 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
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- 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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- 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
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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- 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
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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- 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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- 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
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- 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
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- 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
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
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- 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
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- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a temperature control device based on temperature difference of energy storage batteries, relates to the technical field of battery management, and aims to solve the technical problems that the existing energy storage system is mainly thermally managed by adopting a fan control mode, the temperature of the batteries cannot be effectively reduced in time, if the system works in a cold area, the fan control mode has no heating function, and the whole system works in an unsuitable temperature range; the central processing device comprises a control device and a calculating device, the control device is connected with an electric control valve arranged on each adjusting pipe and controls the opening size of the electric control valve, and the calculating device is used for calculating the power of the temperature adjusting device according to the environment temperature, the working voltage and the working current of the energy storage battery. The effect of being convenient for carry out temperature regulation to energy storage system according to the environment has been reached.
Description
Technical Field
The invention relates to the technical field of battery management, in particular to a temperature control device based on temperature difference of energy storage batteries.
Background
The energy storage battery is mainly used for storing solar power generation equipment, wind power generation equipment and renewable energy. The energy storage battery is in use.
Chinese patent with publication number CN105138053A discloses an energy storage system, comprising: the switch cabinet, the transformer, the power distribution cabinet, the current transformer, the circuit breaker and the battery pack are sequentially connected in series; the system comprises a battery pack management system and a dynamic loop monitoring system which are connected with the battery pack, wherein the dynamic loop monitoring system comprises a processor, an execution unit and an environmental parameter monitoring unit for monitoring environmental parameters of the energy storage system; the environment parameter monitoring unit is connected with the processor; the execution unit is connected with the processor and used for responding to the instruction of the processor to work and indicating that the environmental parameter meets the abnormal condition. The invention monitors the internal environment of the energy storage system and processes the internal environment in time once the environment is abnormal.
The above prior art solutions have the following drawbacks: the existing energy storage system adopts a fan control mode mostly for heat management, if the system is charged and discharged with high power, the heat dissipation capacity of the fan is poor, the temperature of a battery cannot be effectively reduced in time, if the system works in a cold area, the fan control mode has no heating function, and the whole system works in an unsuitable temperature range, so that the improvement is needed.
Disclosure of Invention
In view of the defects in the prior art, an object of the present invention is to provide a temperature control device based on temperature difference of energy storage batteries, which has the advantage of facilitating temperature adjustment of an energy storage system according to the environment.
The above object of the present invention is achieved by the following technical solutions:
a temperature control device based on temperature difference of energy storage batteries comprises a central processing device, a temperature adjusting device, a battery state monitoring device, an environment detection device and a plurality of groups of energy storage batteries;
the environment detection device is used for detecting the environment temperature of the energy storage battery and feeding the environment temperature back to the central processing device;
the battery state monitoring device is used for monitoring the working voltage and the working current of the energy storage battery and feeding back the working voltage and the working current to the central processing device;
the temperature adjusting device comprises a refrigerating device, a heating device, an air supply device and an air supply pipe, wherein the refrigerating device and the heating device are both connected to one end of the air supply pipe, the air supply pipe is provided with an adjusting pipe at each group of energy storage batteries to adjust the temperature of the single group of energy storage batteries, and the air supply device is arranged in the air supply pipe to promote air flow;
the central processing device comprises a control device and a calculating device, the control device is connected with an electric control valve arranged on each adjusting pipe and controls the opening size of the electric control valve, and the calculating device is used for calculating the power of the temperature adjusting device according to the environment temperature, the working voltage and the working current of the energy storage battery.
By adopting the technical scheme, the computing device in the central processing device calculates the working power required by the refrigerating device and the heating device in the temperature adjusting device according to the working state of the energy storage battery detected by the battery state monitoring device and by combining the environmental temperature, calculates the air flow required to be divided by each energy storage battery and transmits the air flow to the control device, and the control device controls the electric control valve to open the corresponding opening and controls the heating device or the refrigerating device to refrigerate, so that the working state of different energy storage batteries can be adjusted while the temperature of the energy storage battery is adjusted according to the environmental temperature, the temperature of the energy storage battery is adjusted according to the difference of the energy storage batteries in a targeted manner, and the energy storage battery is suitable for the environmental temperature.
The invention is further configured to: the energy storage battery protection device is characterized in that a protection shell is arranged around the energy storage battery, a dividing region for placing a single group of energy storage battery is arranged in the protection shell, the adjusting pipes correspond to the dividing regions one to one, a heat insulation material layer is arranged on the inner side wall of the protection shell, and a heat insulation layer is arranged on the outer side wall of the blast pipe.
Through adopting above-mentioned technical scheme, will protect the casing through the partition region and cut apart into a plurality of and be used for storing the region of energy storage battery and improve the thermal insulation material layer and carry out the temperature isolation to the influence each other between every group energy storage battery has been reduced greatly.
The invention is further configured to: every group all be provided with the temperature-detecting device who is used for detecting energy storage battery temperature data on the energy storage battery, temperature-detecting device communication connection is in central processing apparatus.
By adopting the technical scheme, the temperature detection device can measure the specific temperature of the energy storage battery in the partition area, so that the calculation result of the calculation device can be verified, and the data calculated by the calculation device can be adjusted according to the data detected by the temperature detection device, so that the control accuracy of the temperature control device is improved, the temperature of the energy storage battery can be accurately adjusted, and the temperature of the energy storage battery is about the rated temperature.
The invention is further configured to: the temperature control device comprises the temperature control device and the temperature equalizing device according to claim 4, wherein the temperature equalizing device comprises a heat conduction copper pipe, heat conduction liquid, a heat conduction pump and a transfer pool, the heat conduction copper pipe uniformly surrounds the partitioned areas, the heat conduction pump is arranged at the bottom of the transfer pool to pump the heat conduction liquid into the heat conduction copper pipe, and one end, far away from the heat conduction pump, of the heat conduction copper pipe is connected to the transfer pool.
By adopting the technical scheme, the heat conduction pump of the temperature balancing device pumps the heat conduction liquid into the heat conduction copper pipe from the transfer pool, and the heat conduction copper pipe is uniformly wound in the partition area, so that the heat generated by the energy storage battery can be absorbed, the heat conduction copper pipe and the heat conduction liquid are improved to conduct the heat to the outside of the protection shell for emission, and the heat dissipation efficiency is greatly improved; on the other hand, the heat conduction pump pumps the heat conduction liquid to circulate among the plurality of segmentation areas, so that the heat among different segmentation areas can improve the circulation of the heat conduction copper pipe to circulate, the temperature among the segmentation areas can improve the circulation of the heat conduction copper pipe to be stable and consistent, different heat dissipation or temperature rise is not needed to be carried out according to different temperatures, and resources are saved.
The invention is further configured to: the transfer pool is characterized in that the top of the transfer pool is connected with a cooling ring pipe, the cooling ring pipe is distributed in an S shape, the bottom of the cooling ring pipe is communicated with the cooling pool, and the top of the cooling ring pipe is communicated with the heat conduction copper pipe.
Through adopting above-mentioned technical scheme, thereby the cooling ring pipe is the area of contact that the S type distributes and has increased cooling ring pipe and air to greatly increased the heat radiating area of heat conduction liquid, thereby in the heat of being more convenient for gives off the surrounding environment, because heat conduction liquid circulates between a plurality of partition regions under the effect of heat conduction pump, therefore can promote among the partition region energy storage battery' S heat give off in the outside environment of protection casing.
The invention is further configured to: the air supply pipe is located cooling ring pipe and is provided with the air outlet, the air outlet is provided with the water conservancy diversion face, the one end that the air supply pipe is close to the air outlet is provided with the cooling valve, the one side that the cooling valve was kept away from to the air outlet is provided with cooling fan.
Through adopting above-mentioned technical scheme, because the energy storage battery mostly uses the heat production as leading at the in-process of work, therefore the air outlet of blast pipe department can blow to the surface of cooling ring pipe with the cold wind in the blast pipe through cooling fan to the heat of can being convenient for exchanges, thereby further promoted the heat exchange of cooling copper pipe with the air, thereby the heat of further being convenient for protect the casing in the subregion outwards gives off in order to reduce the temperature in the subregion.
The invention is further configured to: the air outlet is provided with the backup pad, it is provided with the shower head towards the cooling ring canal to lie in cooling ring canal top in the backup pad, the shower head is connected with cooling water pump, cooling water pump connects in the running water, cooling water pump connects in central processing apparatus, central processing apparatus is connected with ambient humidity detection device.
Through adopting above-mentioned technical scheme, the shower nozzle of fixing in the backup pad is sprayed water towards the cooling ring pipe under the effect of cooling water pump, because the higher and radiator fan of temperature in the cooling ring pipe is bloied towards the cooling ring pipe, therefore spun water is attached to the cooling copper pipe on the surface through the evaporation heat absorption, can take away a large amount of heats in the cooling copper pipe to the radiating efficiency of cooling copper pipe has been improved greatly.
The invention is further configured to: and a shutoff valve is arranged between every two adjacent heat conduction copper pipes in the partition areas, a heat conduction silica gel layer is arranged on the surface of the energy storage battery, and the heat conduction copper pipes are embedded in the heat conduction silica gel layer.
By adopting the technical scheme, the arrangement of the shut-off valve is convenient for separating the heat-conducting liquid in different partition areas, so that the shut-off valve is opened, and the heat-conducting liquid plays a role of a heat carrier when the heat-conducting liquid circulates; the shutoff valve is closed, and the heat conducting liquid plays a role in regulating the temperature when the heat conducting liquid is static; because the heat-conducting liquid is distilled water and has larger specific heat capacity, the temperature in the divided areas can be adjusted, thereby effectively reducing the situation that the temperature of a certain divided area is overhigh; the heat-conducting performance of the heat-conducting silica gel pad is excellent, and the excellent heat-conducting copper tube is wrapped in the heat-conducting silica gel pad, so that the heat generated by the energy storage battery is conveniently conducted to the heat-conducting copper tube.
The second objective of the present invention is to provide a control method for a temperature control device based on temperature difference of energy storage batteries, which has the advantage of facilitating temperature adjustment for an energy storage system according to the environment.
The above object of the present invention is achieved by the following technical solutions:
s100, detecting the ambient temperature and the working voltage and working current of the energy storage batteries, transmitting the ambient temperature and the working voltage and working current to a central processing device to calculate the power of a temperature adjusting device, and calculating the sizes of openings of electric control valves on different adjusting pipes according to the differential information of each group of energy storage batteries so that the temperature of each group of energy storage batteries rises or falls to a rated temperature;
s200, detecting the temperature of each group of energy storage batteries by a temperature detection device, starting a heat conduction pump when the temperature exceeds a rated temperature, and opening a shut-off valve to enable heat conduction liquid to circulate in a heat conduction copper pipe and a transit pool;
and S300, when the temperature of one or more groups of energy storage batteries exceeds the warning value, the control device controls the electric control valves corresponding to the energy storage batteries with the temperature exceeding the warning value to be fully opened, and the rest of cooling valves calculate the opening degree according to the calculation device and the temperature, and start the refrigerating device to refrigerate.
Through adopting above-mentioned technical scheme, adopt the regulation mode of above-mentioned gradient type, from energy storage battery begins work to energy storage battery temperature rise heat dissipation overall process, can both be convenient for adjust temperature control device's operating condition according to environment and energy storage battery's operating condition to be convenient for adjust energy storage battery's temperature, improved energy storage battery's operating condition greatly, make energy storage battery can both charge or discharge with better operating condition under the environment of difference.
The invention is further configured to: step S200 further includes the following steps:
s210, detecting the temperature of the energy storage battery at preset intervals after the heat conduction pump is started, sending a signal to a central processing device when the temperature of the energy storage battery continuously rises, controlling a cooling fan by the central processing device, starting a cooling water pump, opening a spray header to spray water towards a cooling ring pipe, detecting the environmental humidity through an environmental humidity detection device, and feeding back the environmental humidity to the central processing device;
s220, detecting the temperature of the energy storage battery again after the interval T, and setting the interval T as a timing period to spray water towards the cooling ring pipe after the temperature of the energy storage battery is reduced; and when the energy storage battery continuously rises, the rotating speed of the cooling fan is increased.
Through adopting above-mentioned technical scheme, when energy storage battery began to charge or outwards discharged, its temperature often can rise, therefore when detecting energy storage battery temperature and being higher than rated temperature control device through above-mentioned control method and cooling down to the temperature that has promoted energy storage battery outwards gives off, and can reduce the energy that whole in-process required use, with maximum efficiency and minimum resource, the heat dissipation problem of energy storage battery has been solved high-efficiently.
In conclusion, the beneficial effects of the invention are as follows:
1. the technology that a central processing device, a temperature adjusting device, a battery state monitoring device, an environment detection device, a control device, a computing device, a protective shell, a heat insulation material layer, a heat insulation layer and the temperature detection device are matched is adopted, so that the effect of facilitating the heat dissipation of the energy storage battery to ensure the constant temperature of the energy storage battery is achieved;
2. the technology that a heat conduction copper pipe, a heat conduction pump, a transfer pool, a cooling ring pipe, an air outlet, a flow guide surface, a cooling valve and a cooling fan are matched is adopted, so that the effect of promoting the excessive heat of the energy storage battery to be dissipated outwards is achieved;
3. the technology that the supporting plate, the cooling fan, the cooling water pump, the environment system detection device, the shutoff valve and the heat conduction silica gel pad are matched is adopted, and therefore the effect of further promoting the constant temperature of the energy storage battery is achieved.
Drawings
FIG. 1 is a block diagram showing the connection relationship between central processing units in the embodiment;
FIG. 2 is a schematic diagram illustrating an overall structure of a temperature control device based on temperature difference of energy storage batteries according to an embodiment;
FIG. 3 is a schematic diagram illustrating the structure of the air outlet and the cooling collar in the embodiment.
In the figure: 1. a central processing device; 10. a control device; 100. a computing device; 11. a battery state monitoring device; 12. an environment detection device; 13. a temperature detection device; 14. an ambient humidity detection device; 2. a temperature adjustment device; 21. a refrigeration device; 22. a heating device; 23. an air supply device; 24. an air supply pipe; 241. an adjusting tube; 2411. an electrically controlled valve; 242. a thermal insulation layer; 243. an air outlet; 2431. a flow guide surface; 2432. a cooling valve; 2433. a cooling fan; 3. an energy storage battery; 31. a protective housing; 30. dividing the region; 311. a layer of thermal insulation material; 4. a temperature equalization device; 41. a heat conducting copper pipe; 411. closing the valve; 412. a heat conductive silica gel layer; 42. a heat transfer pump; 43. a transfer pool; 44. a cooling loop; 5. a support plate; 51. a shower head; 52. and (5) cooling the water pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
a temperature control device based on temperature difference of energy storage batteries 3 refers to fig. 1 and 2, and comprises a central processing device 1, a temperature adjusting device 2, a battery state monitoring device 11, an environment detection device 12 and a plurality of groups of energy storage batteries 3;
referring to fig. 1 and 2, the environment detecting device 12 is an environment temperature sensor, which is installed at a position far away from the energy storage battery 3 and is used for detecting the environment temperature of the energy storage battery 3 and feeding the environment temperature back to the central processing device 1; the battery state monitoring device 11 is used for monitoring the working voltage and the working current of the energy storage battery 3 and feeding back the working voltage and the working current to the central processing device 1.
Referring to fig. 1 and 2, the temperature adjusting device 2 includes a cooling device 21, a heating device 22, an air supply device 23, and an air supply pipe 24, wherein the cooling device 21 and the heating device 22 are both connected to one end of the air supply pipe 24, and the heating device 22 is a resistance heater for heating air; the heating device 22 is a micro air conditioner for cooling air; the air blowing device 23 sends the heated or cooled air into the air blowing duct 24. The air supply pipe 24 is integrally formed with an adjusting pipe 241 at each group of energy storage batteries 3 to adjust the temperature of the single group of energy storage batteries 3, and the air supply device 23 is installed in the air supply pipe 24 through bolts to promote the air to flow towards each group of energy storage batteries 3.
Referring to fig. 1 and 2, a protective shell 31 is wrapped around the energy storage battery 3, a partition area 30 for placing a single group of energy storage batteries 3 is formed inside the protective shell 31 through a partition plate, the adjusting pipes 241 are in one-to-one correspondence with the partition area 30, a heat insulation material layer 311 is installed on the inner side wall of the protective shell 31 through bolts, and a heat insulation layer 242 is wrapped on the outer side wall of the blast pipe 24, so that the influence of the external environment temperature on the internal temperature of the blast pipe 24 is reduced.
Referring to fig. 1 and 2, the central processing unit 1 includes a control unit 10 and a computing unit 100, the control unit 10 is connected to an electronic control valve 2411 provided on each of the regulating pipes 241 and controls the opening size of the electronic control valve 2411, and the electronic control valve 2411 is a digital display type flow control valve. The calculating device 100 is used for calculating the power of the temperature adjusting device 2 according to the ambient temperature, the working voltage and the working current of the energy storage battery 3, so as to calculate the most appropriate power and the opening degree of the electronic control valve 2411. The opening degree is small during heating and is large during cooling, so that the temperature dynamic balance of all the energy storage batteries 3 is ensured as far as possible.
Referring to fig. 1 and 2, each group of energy storage batteries 3 is provided with a temperature detection device 13 for detecting temperature data of the energy storage batteries 3, and the temperature detection device 13 is a temperature sensor and is installed on one side away from the adjusting pipe 241. The temperature detection device 13 is connected to the central processing device 1 through wireless communication device communication, and adjusts the power of the refrigeration device 21 or the refrigeration device 21 and the opening degree of the electronic control valve 2411 according to the data detected by the temperature detection device 13.
Referring to fig. 1 and 2, the present embodiment further includes a temperature equalizing device 4, where the temperature equalizing device 4 includes a heat conducting copper pipe 41, a heat conducting liquid, a heat conducting pump 42, and a transfer tank 43. The heat conduction liquid is distilled water, the transfer pool 43 is a metal closed box body, the heat conduction copper pipe 41 uniformly surrounds the division area 30, the heat conduction pump 42 is installed at the bottom of the transfer pool 43 to pump the heat conduction liquid into the heat conduction copper pipe 41, and one end, far away from the heat conduction pump 42, of the heat conduction copper pipe 41 is connected to the transfer pool 43.
Referring to fig. 1 and 2, the top of the transfer pool 43 is connected with two cooling loops 44, the cooling loops 44 are distributed in an S shape, the two cooling loops 44 are symmetrically arranged along a vertical line, the bottoms of the two cooling loops 44 are commonly communicated with the cooling pool through a tee, and the tops of the two cooling loops 44 are communicated with the heat conducting copper pipe 41 through a tee.
Referring to fig. 2 and 3, an air outlet 243 is integrally formed at the position of the air supply pipe 24 located at the cooling collar 44, a flow guide surface 2431 is integrally formed at the air outlet 243, a cooling valve 2432 is mounted on one end of the air supply pipe 24 close to the air outlet 243 through a flange, and the cooling valve 2432 is an electromagnetic valve. A cooling fan 2433 is disposed at a side of the air outlet 243 away from the cooling valve 2432, and the cooling fan 2433 is an axial fan and the air flows toward the cooling loop 44. The electronic control valve 2411 is opened, and hot air or cold air in the blast pipe 24 can be blown onto the cooling loop pipe 44 from the air outlet 243 to heat or cool the cooling loop pipe 44.
Referring to fig. 2 and 3, a support plate 5 is welded and fixed to the air outlet 243, a shower head 51 facing the cooling collar 44 is mounted on the support plate 5 at the top of the cooling collar 44 through bolts, and the shower head 51 is electromagnetically controlled. The shower head 51 is connected with a cooling water pump 52, the cooling water pump 52 is connected to tap water, the cooling water pump 52 is connected to the central processing device 1, the central processing device 1 is connected with an environmental humidity detection device 14, and the environmental humidity detection device 14 is a humidity sensor.
Referring to fig. 2 and 3, a shutoff valve 411 is connected between the heat conduction copper pipes 41 of two adjacent partition areas 30 through a flange, a heat conduction silica gel layer 412 is fixedly bonded on the surface of the energy storage battery 3, the heat conduction copper pipes 41 are embedded in the heat conduction silica gel layer 412 and wrap the heat conduction copper pipes 41, and the heat conduction silica gel layer 412 has good heat conduction performance, so that heat conduction to the heat conduction copper pipes 41 is further promoted.
Referring to fig. 1 to 3, an embodiment of the present application further manages a control method of a temperature control device based on a temperature difference between energy storage batteries, including the following steps:
s100, detecting the ambient temperature and the working voltage and working current of the energy storage batteries 3, transmitting the ambient temperature and the working voltage and working current to the central processing device 1 to calculate the power of the temperature adjusting device 2, and calculating the opening size of the electric control valve 2411 on different adjusting pipes 241 according to the differential information of each group of energy storage batteries 3 so that the temperature of each group of energy storage batteries 3 is kept at the rated temperature; when the ambient temperature is lower than the rated temperature of the energy storage battery 3, the environment where the energy storage battery 3 is located needs to be heated, and at this time, the maximum power of the heating device 22 is used and all the electronic control valves 2411 are controlled to be opened at the maximum opening degree, so that the temperature of the energy storage battery 3 is raised to the rated temperature. When the ambient temperature is higher than the rated temperature, the energy storage battery 3 may be directly charged, at this time, the charging power of the energy storage battery 3 needs to be calculated to calculate the power of the refrigeration device 21 and adjust the opening of the electronic control valve 2411, and since some batteries are being charged and other batteries may be in an idle state, the flow rate of the cold air output by the refrigeration device 21 needs to be allocated according to the charging power of the energy storage battery 3, so as to maximize the utilization of resources.
S200, the temperature detection device 13 detects the temperature of each group of energy storage batteries 3, when the temperature exceeds the rated temperature, the heat conduction pump 42 is started, the heat conduction pump 42 pumps the heat conduction liquid in the transfer pool 43 into the heat conduction copper pipe 41 continuously, so that the heat conduction liquid circulates in the heat conduction copper pipe 41 and the transfer pool 43, and the heat of the energy storage batteries 3 can be conducted to the outside through the heat conduction liquid and the heat conduction copper pipe 41 to be dissipated.
And S210, detecting the ambient temperature after the heat conduction pump 42 is started, when the ambient temperature is higher than the rated temperature, sending a signal to the central processing device 1 when the temperature of the energy storage battery 3 continuously rises, controlling the cooling fan 2433 by the central processing device 1, starting the cooling water pump 52, opening the spray header 51 to spray water towards the cooling loop 44, and simultaneously detecting the ambient humidity through the ambient humidity detection device 14 and feeding the ambient humidity back to the central processing device 1. The central processing unit 1 calculates the time for re-detecting the temperature of the energy storage battery 3 according to the ambient humidity and controls the interval frequency of spraying by the spray header 51 towards the cooling loop 44, and when the ambient humidity is higher, the frequency of spraying water is increased, so that the evaporation area is larger.
S220, detecting the temperature of the energy storage battery 3 again after the interval T, and setting the interval T as a timing period to spray water towards the cooling ring pipe 44 after the temperature of the energy storage battery 3 is reduced; when the energy storage battery 3 continuously rises, the rotating speed of the cooling fan 2433 is increased to improve the efficiency of evaporation heat dissipation. When the environment humidity is saturated, a signal is sent to the central control device 10, the refrigeration device 21 is controlled to start, the refrigeration device operates at half of the rated power, and the opening degree of each electronic control valve 2411 is calculated by the calculating device 100
And S300, when the temperature of one or more groups of energy storage batteries 3 exceeds the warning value, the control device 10 controls the electronic control valve 2411 corresponding to the energy storage battery 3 with the temperature exceeding the warning value to be fully opened, the rest electronic control valves 2411 calculate the opening degree according to the calculation device 100, and the refrigeration device 21 is started to refrigerate at the rated output power.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A temperature control method based on energy storage battery temperature difference is characterized in that the method comprises a central processing device (1), a temperature adjusting device (2), a battery state monitoring device (11), an environment detection device (12) and a plurality of groups of energy storage batteries (3) based on a temperature control device;
the environment detection device (12) is used for detecting the environment temperature of the energy storage battery (3) and feeding the environment temperature back to the central processing device (1);
the battery state monitoring device (11) is used for monitoring the working voltage and the working current of the energy storage battery (3) and feeding back the working voltage and the working current to the central processing device (1);
the temperature adjusting device (2) comprises a refrigerating device (21), a heating device (22), an air supply device (23) and an air supply pipe (24), wherein the refrigerating device (21) and the heating device (22) are connected to one end of the air supply pipe (24), the air supply pipe (24) is positioned at each group of energy storage batteries (3) and is provided with an adjusting pipe (241) for adjusting the temperature of the single group of energy storage batteries (3), and the air supply device (23) is arranged in the air supply pipe (24) to promote air flow;
the central processing device (1) comprises a control device (10) and a computing device (100), the control device (10) is connected with an electric control valve (2411) arranged on each adjusting pipe (241) and controls the opening size of the electric control valve (2411), and the computing device (100) is used for computing the power of the temperature adjusting device (2) according to the ambient temperature, the working voltage and the working current of the energy storage battery (3); the method comprises the following steps:
s100, detecting the ambient temperature and the working voltage and working current of the energy storage batteries (3) and transmitting the working voltage and working current to the central processing device (1) to calculate the power of the temperature adjusting device (2), and calculating the opening size of an electric control valve (2411) on different adjusting pipes (241) according to the differentiation information of each group of energy storage batteries (3) to enable the temperature of each group of energy storage batteries (3) to rise or fall to a rated temperature;
s200, detecting the temperature of each group of energy storage batteries (3) by a temperature detection device (13), starting a heat conduction pump (42) when the temperature exceeds the rated temperature, and simultaneously opening a shut-off valve (411) to enable heat conduction liquid to circulate in a heat conduction copper pipe (41) and a transit pool (43);
s300, when the temperature of one or more groups of energy storage batteries (3) exceeds a warning value, the control device (10) controls the electric control valve (2411) corresponding to the energy storage battery (3) with the temperature exceeding the warning value to be fully opened, the rest cooling valves (2432) calculate the opening degree according to the calculation device (100) and the temperature, and the refrigeration device (21) is started to refrigerate.
2. The temperature control method based on the temperature difference of the energy storage battery according to claim 1, characterized in that: be provided with protection casing (31) around energy storage battery (3), protection casing (31) inside is provided with cuts apart regional (30) of placing single group energy storage battery (3), governing pipe (241) and cut apart regional (30) one-to-one, protection casing (31) inside wall is provided with thermal-insulated material layer (311), blast pipe (24) lateral wall is provided with insulating layer (242).
3. The temperature control method based on the temperature difference of the energy storage battery according to claim 2, characterized in that: every group all be provided with temperature-detecting device (13) that are used for detecting energy storage battery (3) temperature data on energy storage battery (3), temperature-detecting device (13) communication connection is in central processing apparatus (1).
4. The temperature control method based on the temperature difference of the energy storage battery according to claim 3, characterized in that: the temperature control device comprises the temperature control device and the temperature equalization device (4) as claimed in claim 1, wherein the temperature equalization device (4) comprises a heat conduction copper pipe (41), a heat conduction liquid, a heat conduction pump (42) and a transfer pool (43), the heat conduction copper pipe (41) is uniformly surrounded in the dividing region (30), the heat conduction pump (42) is arranged at the bottom of the transfer pool (43) to pump the heat conduction liquid into the heat conduction copper pipe (41), and one end, far away from the heat conduction pump (42), of the heat conduction copper pipe (41) is connected to the transfer pool (43).
5. The temperature control method based on the temperature difference of the energy storage battery according to claim 4, characterized in that: the top of the transfer pool (43) is connected with a cooling ring pipe (44), the cooling ring pipe (44) is distributed in an S shape, the bottom of the cooling ring pipe (44) is communicated with the cooling pool, and the top of the cooling ring pipe (44) is communicated with the heat conduction copper pipe (41).
6. The temperature control method based on the temperature difference of the energy storage battery according to claim 5, characterized in that: the air supply pipe (24) is located at the cooling ring pipe (44) and is provided with an air outlet (243), the air outlet (243) is provided with a flow guide surface (2431), one end, close to the air outlet (243), of the air supply pipe (24) is provided with a cooling valve (2432), and one side, far away from the cooling valve (2432), of the air outlet (243) is provided with a cooling fan (2433).
7. The temperature control method based on the temperature difference of the energy storage battery according to claim 6, characterized in that: the air outlet (243) is provided with a support plate (5), a spray header (51) facing the cooling circular pipe (44) is arranged on the support plate (5) and positioned at the top of the cooling circular pipe (44), the spray header (51) is connected with a cooling water pump (52), the cooling water pump (52) is connected with tap water, the cooling water pump (52) is connected with the central processing device (1), and the central processing device (1) is connected with an environmental humidity detection device (14).
8. The temperature control method based on the temperature difference of the energy storage battery according to claim 7, characterized in that: a shutoff valve (411) is arranged between the heat conduction copper pipes (41) of the adjacent two partition areas (30), a heat conduction silica gel layer (412) is arranged on the surface of the energy storage battery (3), and the heat conduction copper pipes (41) are embedded in the heat conduction silica gel layer (412).
9. The temperature control method based on the temperature difference of the energy storage battery according to claim 8, characterized in that: step S200 further includes the following steps:
s210, detecting the temperature of the energy storage battery (3) at preset intervals after the heat conduction pump (42) is started, sending a signal to the central processing device (1) when the temperature of the energy storage battery (3) continuously rises, controlling the cooling fan (2433) by the central processing device (1), starting the cooling water pump (52), opening the spray header (51) to spray water to the cooling ring pipe (44), and simultaneously detecting the environmental humidity through the environmental humidity detection device (14) and feeding the environmental humidity back to the central processing device (1);
s220, detecting the temperature of the energy storage battery (3) again after the interval T, and setting the interval T as a timing period to spray water towards the cooling ring pipe (44) after the temperature of the energy storage battery (3) is reduced; when the energy storage battery (3) continuously rises, the rotating speed of the cooling fan (2433) is increased.
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| CN113140815A (en) * | 2021-04-17 | 2021-07-20 | 狮宸(武汉)科技有限责任公司 | Wireless control system and control method for heat emission of new energy battery module operating environment |
| WO2024000138A1 (en) * | 2022-06-28 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Energy storage system thermal management method and energy storage system |
| CN116706340B (en) * | 2023-08-09 | 2023-10-27 | 江苏天合储能有限公司 | Energy storage system heat management method and system, electronic equipment and storage medium |
| CN117080629B (en) * | 2023-08-23 | 2024-04-02 | 清安储能技术(重庆)有限公司 | Detection method of battery cluster |
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