CN116632421A - Method, apparatus and computer readable storage medium for temperature regulation - Google Patents
Method, apparatus and computer readable storage medium for temperature regulation Download PDFInfo
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- CN116632421A CN116632421A CN202310910256.5A CN202310910256A CN116632421A CN 116632421 A CN116632421 A CN 116632421A CN 202310910256 A CN202310910256 A CN 202310910256A CN 116632421 A CN116632421 A CN 116632421A
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- 238000000034 method Methods 0.000 title claims abstract description 77
- 238000003860 storage Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 123
- 239000000178 monomer Substances 0.000 claims abstract description 101
- 238000001816 cooling Methods 0.000 claims description 78
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000001276 controlling effect Effects 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
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- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
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- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
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Classifications
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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
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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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
- H01M10/61—Types of temperature control
-
- 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
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the application provides a temperature adjusting method, a temperature adjusting device and a computer readable storage medium, which can reduce the temperature difference between different batteries and further effectively improve the performance of the batteries. The method comprises the following steps: acquiring temperatures of a plurality of battery monomers included in a plurality of batteries; and heating the first battery under the condition that a first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than a first preset temperature difference, wherein the first battery monomer is the battery monomer with the lowest temperature in the plurality of battery monomers, the second battery monomer is the battery monomer with the highest temperature in the plurality of battery monomers, and the first battery comprises the first battery monomer.
Description
Technical Field
The present application relates to the field of battery technology, and in particular, to a method, an apparatus, and a computer readable storage medium for temperature regulation.
Background
With the development of the age, the electric automobile has huge market prospect due to the advantages of high environmental protection, low noise, low use cost and the like, can effectively promote energy conservation and emission reduction, and is beneficial to the development and progress of society.
For electric vehicles and related fields, battery technology is an important factor in the development thereof. Among them, the temperature of the battery has a great influence on its performance, life, etc.
Disclosure of Invention
The embodiment of the application provides a temperature adjusting method, a temperature adjusting device and a computer readable storage medium, which can reduce the temperature difference between different batteries and further effectively improve the performance of the batteries.
In a first aspect, a method of temperature regulation is provided, the method comprising: acquiring temperatures of a plurality of battery monomers included in a plurality of batteries; and heating the first battery under the condition that a first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than a first preset temperature difference, wherein the first battery monomer is the battery monomer with the lowest temperature in the plurality of battery monomers, the second battery monomer is the battery monomer with the highest temperature in the plurality of battery monomers, and the first battery comprises the first battery monomer.
According to the embodiment of the application, the temperature of the plurality of battery monomers is obtained, and when the temperature difference between the battery monomer with the highest temperature and the battery monomer with the lowest temperature is larger, the battery with the lowest temperature is heated, so that the temperature difference between different batteries can be reduced, and the performance of the battery is further effectively improved.
In some possible embodiments, the obtaining the temperatures of the plurality of battery cells included in the plurality of batteries includes: and acquiring the temperatures of the plurality of battery cells in the process of cooling the plurality of batteries.
Due to the cooling of the battery, uneven cooling may occur. According to the technical scheme, the temperatures of the battery monomers are obtained in the cooling process of the battery monomers, so that whether the temperature difference between the battery monomers is in the preset range in the cooling process can be determined. If not, some measures may be taken to reduce adverse effects due to the temperature difference between the plurality of battery cells not being within the preset range, thereby improving the performance of the battery.
In some possible embodiments, the obtaining the temperatures of the plurality of battery cells includes: and in the process of cooling the batteries in a direct cooling mode, acquiring the temperatures of the battery monomers.
When the battery is cooled by direct cooling, the uniformity of refrigerant distribution is difficult to ensure. According to the technical scheme, the temperatures of the battery monomers are obtained in the cooling process of the battery monomers, so that whether the temperature difference between the battery monomers is in the preset range in the cooling process can be determined. If not, some measures may be taken to reduce adverse effects due to the temperature difference between the plurality of battery cells not being within the preset range, thereby improving the performance of the battery.
In some possible embodiments, the heating the first battery includes: the first battery is heated during the cooling of the plurality of batteries by direct cooling.
According to the technical scheme, when the temperature difference between the plurality of battery monomers is large, the previous running state does not need to be changed in the process of heating the first battery, namely, the plurality of batteries are continuously cooled in a direct cooling mode, so that the implementation is simpler. In addition, the battery is cooled in a direct cooling mode, so that the cooling requirement of the battery can be met, the refrigeration efficiency can be improved, and the power consumption of auxiliary sources of the system can be reduced.
In some possible embodiments, the method further comprises: acquiring the temperature of each battery in the plurality of batteries and the average temperature of the plurality of batteries; the first battery is heated under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, and the method comprises the following steps: and heating the first battery under the condition that the first temperature difference is larger than the first preset temperature difference and the temperature of the first battery in the plurality of batteries is smaller than the average temperature of the plurality of batteries.
In some possible embodiments, the first battery cell is provided with a heating element, and the heating the first battery cell includes: and heating the first battery by controlling the heating element.
In some situations, such as in direct cooling systems, if the battery temperature is low, the heating system in the system may not be operated to heat the low temperature battery. According to the technical scheme, the heating element is arranged and the first battery is heated by controlling the heating element, so that the purpose of heating the first battery is effectively achieved, and the application diversity of the embodiment of the application is improved.
In some possible embodiments, the heating element is a membranous structure.
According to the technical scheme, the heating piece is arranged to be of the membranous structure, and the membranous structure is relatively small in volume and mass, so that the mass energy density and the volume energy density of the battery can be effectively improved.
In some possible embodiments, the first battery cell has at least three sides and at least one end face, each of the end faces being connected to all of the sides, at least one of the end faces being provided with an electrode terminal; wherein the heating member is disposed on at least one of the side surfaces having a smaller area, and/or the heating member is disposed on the end surface where the electrode terminal is not disposed.
On the one hand, the grouping mode of the batteries is generally a mode of large-surface lamination, so that the heating element is arranged on at least one side surface with smaller area among the side surfaces, and the battery is easy to realize and simple to operate. On the other hand, the heating member is provided on the end surface where the electrode terminal is not provided, and is also easy to implement and simple to operate. In still another aspect, the heating member is disposed on at least one of the side surfaces having a smaller area and the end surface not provided with the electrode terminal, so that the contact area between the heating member and the battery cells is larger, so that the heating member heats the first battery cells at a faster rate, and the efficiency of reducing the temperature difference between the different batteries is greatly improved.
In some possible embodiments, the method further comprises: and cooling the second battery under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, wherein the second battery comprises the second battery monomer.
Therefore, the time spent for reducing the temperature between different batteries can be reduced, and the efficiency for reducing the temperature difference between the different batteries is effectively improved.
In some possible embodiments, the method further comprises: stopping heating the first battery under the condition that the first temperature difference is smaller than a second preset temperature difference; wherein the second preset temperature difference is smaller than the first preset temperature difference.
According to the technical scheme, the second preset temperature difference is set to be smaller than the first preset temperature, namely a certain return difference value is reserved. In this way, the frequent start and stop of the heating of the first battery can be reduced, effectively reducing the complexity of the operation.
In a second aspect, there is provided a temperature regulating device comprising: an acquisition unit configured to acquire temperatures of a plurality of battery cells included in a plurality of batteries; and the heating unit is used for heating the first battery under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, the first battery monomer is the battery monomer with the lowest temperature in the plurality of battery monomers, the second battery monomer is the battery monomer with the highest temperature in the plurality of battery monomers, and the first battery comprises the first battery monomer.
In some possible embodiments, the obtaining unit is specifically configured to: and acquiring the temperatures of the plurality of battery cells in the process of cooling the plurality of batteries.
In some possible embodiments, the obtaining unit is specifically configured to: and in the process of cooling the batteries in a direct cooling mode, acquiring the temperatures of the battery monomers.
In some possible embodiments, the heating unit is specifically configured to: the first battery is heated during the cooling of the plurality of batteries by direct cooling.
In some possible embodiments, the acquisition unit is further configured to: acquiring the temperature of each battery in the plurality of batteries and the average temperature of the plurality of batteries; the heating unit is specifically used for: and heating the first battery under the condition that the first temperature difference is larger than the first preset temperature difference and the temperature of the first battery in the plurality of batteries is smaller than the average temperature of the plurality of batteries.
In some possible embodiments, the first battery cell is provided with a heating element, and the heating unit is specifically configured to: and heating the first battery by controlling the heating element.
In some possible embodiments, the heating element is a membranous structure.
In some possible embodiments, the first battery cell has at least three sides and at least one end face, each of the end faces being connected to all of the sides, at least one of the end faces being provided with an electrode terminal; wherein the heating member is disposed on at least one of the side surfaces having a smaller area, and/or the heating member is disposed on the end surface where the electrode terminal is not disposed.
In some possible embodiments, the apparatus further comprises: and the cooling unit is used for cooling the second battery under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, and the second battery comprises the second battery monomer.
In some possible embodiments, the heating unit is further configured to: stopping heating the first battery under the condition that the first temperature difference is smaller than a second preset temperature difference; wherein the second preset temperature difference is smaller than the first preset temperature difference.
In a third aspect, there is provided an apparatus for temperature regulation, comprising a processor and a memory, the memory for storing a computer program, the processor for invoking the computer program to perform the method of the first aspect or implementations thereof.
In a fourth aspect, a computer-readable storage medium is provided for storing a computer program for causing a computer to perform the method of the first aspect or implementations thereof.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.
In the drawings, the drawings are not drawn to scale.
Fig. 1 is a schematic diagram of a vehicle according to an embodiment of the present application.
Fig. 2 is a schematic flow chart of a method of temperature regulation in accordance with an embodiment of the present application.
Fig. 3 is a schematic diagram of a direct cooling system according to an embodiment of the present application.
Fig. 4 is a specific flowchart of a method of temperature regulation according to an embodiment of the present application.
Fig. 5 is a schematic block diagram of an apparatus for temperature regulation according to an embodiment of the present application.
Fig. 6 is a schematic block diagram of an apparatus for temperature regulation according to an embodiment of the present application.
Detailed Description
Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the embodiments described.
In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like are merely used for convenience in describing the present application and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.
With the development of new energy technology, the application field of batteries is becoming wider and wider. Such as batteries, may be used as the primary power source for powered devices (e.g., vehicles, boats, or spacecraft, etc.). It should be understood that reference to a battery in accordance with an embodiment of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity.
Alternatively, the battery may be a power storage battery. The battery may be a lithium ion battery, a lithium metal battery, a lead-acid battery, a nickel-metal-hydride battery, a lithium-sulfur battery, a lithium-air battery, a sodium ion battery, or the like, and is not particularly limited in the embodiment of the present application. In terms of battery scale, the battery in the embodiment of the present application may be a battery cell or a battery module or a battery pack, and is not particularly limited in the embodiment of the present application.
For batteries, not only is the battery operated at a reasonable temperature, but the temperature difference between different battery cells does not exceed a specific value as much as possible. If the temperature difference is too large, the consistency between the battery cells is deteriorated, and the charge and discharge rate of each battery cell is different, thereby degrading the performance of the battery. Such as thermal stability problems, e.g., capacity fade, thermal runaway, etc., and such as a significant decrease in battery life.
Based on this, the embodiment of the application provides a temperature adjustment method, which is to obtain the temperatures of a plurality of battery monomers, and heat the battery where the battery monomer with the lowest temperature is located when the temperature difference between the battery monomer with the highest temperature and the battery monomer with the lowest temperature is larger, so that the temperature difference between different batteries can be reduced, and further the performance of the battery is effectively improved.
The technical scheme described by the embodiment of the application is suitable for various electric equipment using batteries.
The electric equipment can be, for example, a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool and the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric equipment in particular.
Hereinafter, electric equipment will be described as an example of a vehicle, but it should be understood that embodiments of the present application are not limited thereto.
Fig. 1 shows a schematic structural diagram of an electric device as a vehicle according to an embodiment of the present application. As shown in fig. 1, the vehicle 1 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The motor 40, the controller 30 and the power battery 10 may be provided inside the vehicle 1, and the controller 30 is configured to control the battery 10 to supply power to the motor 40. For example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, e.g. the battery 10 may be used as an operating power source for the vehicle 1, for electrical circuitry of the vehicle 1, e.g. for start-up, navigation and operational power requirements of the vehicle 1. In another embodiment of the present application, the battery 10 may be used not only as an operating power source for the vehicle 1 but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to supply driving power to the vehicle 1.
Fig. 2 shows a schematic flow chart of a method 200 of temperature regulation in accordance with an embodiment of the application. Alternatively, the method 200 may be performed by a battery management system (battery management system, BMS) or may be performed by a newly added device in a powered device.
As shown in fig. 2, method 200 may include at least some of the following.
S210: the temperature of a plurality of battery cells included in the plurality of batteries is obtained.
S220: and heating the first battery under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference. The first battery cell is the battery cell with the lowest temperature in the battery cells, the second battery cell is the battery cell with the highest temperature in the battery cells, and the first battery cell comprises the first battery cell.
According to the embodiment of the application, the temperature of the plurality of battery monomers is obtained, and when the temperature difference between the battery monomer with the highest temperature and the battery monomer with the lowest temperature is larger, the battery with the lowest temperature is heated, so that the temperature difference between different batteries can be reduced, and the performance of the battery is further effectively improved.
Alternatively, the temperatures of the plurality of battery cells may be acquired in real time.
Alternatively, the temperatures of the plurality of battery cells may be periodically acquired. For example, the temperatures of a plurality of battery cells are acquired every 5 ms.
Alternatively still, the temperatures of the plurality of battery cells may be randomly acquired. For example, the time interval between the first acquisition of the temperatures of the plurality of battery cells and the second acquisition of the temperatures of the plurality of battery cells is 3ms, and the time interval between the second acquisition of the temperatures of the plurality of battery cells and the third acquisition of the temperatures of the plurality of battery cells is 6ms.
Alternatively, the first preset temperature difference may be determined, for example, according to the life requirement of the battery. Illustratively, the first preset temperature may be 5 degrees celsius (°c).
The battery generates a large amount of heat during the operation of the vehicle and accumulates in a relatively small space as time passes. In addition, when the battery is charged, thermal runaway of the battery is liable to occur due to the temperature of the battery possibly rising during charging or other reasons. Once thermal runaway occurs, combustion, explosion, etc. of the battery may occur.
In view of this, it is generally necessary to cool the battery to reduce the temperature of the battery. In the process of cooling a plurality of batteries, uneven cooling may occur, that is, the temperature of some batteries is high and the temperature of some batteries is low.
At this time, S210 may specifically include: in the process of cooling the plurality of batteries, the temperatures of the plurality of battery cells are obtained. Due to the cooling of the battery, uneven cooling may occur. According to the technical scheme, the temperatures of the battery monomers are obtained in the cooling process of the battery monomers, so that whether the temperature difference between the battery monomers is in the preset range in the cooling process can be determined. If not, some measures may be taken to reduce adverse effects due to the temperature difference between the plurality of battery cells not being within the preset range, thereby improving the performance of the battery.
Generally, cooling modes of batteries are mainly classified into three types of air cooling, liquid cooling and direct cooling. Wherein the direct cooling system cools the battery by using a refrigerant. Fig. 3 shows a schematic diagram of a direct cooling system. As shown in fig. 3, the direct cooling system may include a compressor, a condenser, a fan, an expansion valve, and a plurality of batteries arranged in parallel. The refrigerant evaporates and absorbs heat in the battery to cool the battery, and the expansion valve shunts the refrigerant to ensure the consistency of shunting, so as to ensure the consistency of the temperature of the battery.
However, even if the refrigerant distribution uniformity is still difficult to ensure, temperature inconsistency still occurs among the plurality of batteries in the process of cooling the plurality of batteries by direct cooling. Therefore, the temperatures of the plurality of battery cells can be obtained during the process of cooling the plurality of batteries by direct cooling.
According to the technical scheme, the temperatures of the battery monomers are obtained in the cooling process of the battery monomers, so that whether the temperature difference between the battery monomers is in a preset range in the cooling process can be determined. If not, some measures may be taken to reduce adverse effects due to the temperature difference between the plurality of battery cells not being within the preset range, thereby improving the performance of the battery.
If the first temperature difference between the temperature of the first battery cell and the temperature of the second battery cell is greater than the first preset temperature difference, the cooling of the first battery can be stopped and the first battery can be heated.
To do so, a valve needs to be provided for each cell. If the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, a valve corresponding to the first battery can be closed, so that cooling of the first battery is stopped. In this way, the cost is high.
Therefore, the first battery can be heated during the process of cooling the plurality of batteries by direct cooling. In other words, the current operation state may be maintained, and the heating mode of the first battery may be turned on.
According to the technical scheme, when the temperature difference between the plurality of battery monomers is large, the previous running state does not need to be changed in the process of heating the first battery, namely, the plurality of batteries are continuously cooled in a direct cooling mode, so that the implementation is simpler. In addition, the battery is cooled in a direct cooling mode, so that the cooling requirement of the battery can be met, the refrigeration efficiency can be improved, and the power consumption of auxiliary sources of the system can be reduced.
It should be noted that, the cooling system and the heating system in the embodiment of the present application are two systems, which can be operated separately or simultaneously, and specifically can be controlled by combining the requirements of refrigeration and heating.
For example, when the battery is under the high temperature exposure, the battery cells on the side and top of the battery may have a high temperature, and the operation of the refrigeration system may be controlled at this time, for example, the refrigeration system may be controlled to cool the battery cells on the side and top of the battery in a full power mode. For another example, when the battery is in a low-temperature standing state, the battery cells located at the side and the top of the battery may have a low temperature, and the heating system may be controlled to operate to heat the battery cells located at the side and the top of the battery.
After determining that the first temperature difference is greater than the first preset temperature difference, it may not be determined which battery the lowest temperature cell belongs to. Thus, further, in the case where the first temperature difference between the temperature of the first battery cell and the temperature of the second battery cell is greater than the first preset temperature difference, the method 200 may further include: the temperature of each of the plurality of batteries and the average temperature of the plurality of batteries are obtained, and the first battery is heated when the temperature of the first battery of the plurality of batteries is less than the average temperature of the plurality of batteries.
Alternatively, the difference between the average temperatures of each battery and the plurality of batteries may be sequentially broken, and the first battery is heated when it is determined that the temperature of the first battery is less than the average temperature of the plurality of batteries.
Alternatively, the difference between the average temperatures of each battery and the plurality of batteries may be determined at the same time.
It should be understood that the temperature of the battery in the above is the average temperature of all the battery cells included in the battery. For example, the first battery includes three battery cells, and the temperatures of the three battery cells are T1, T2, and T3, respectively, and then the temperature t= (t1+t2+t3)/3 of the first battery.
In the case where the first temperature difference is greater than the first preset temperature difference, the second battery may be cooled in addition to the first battery. Wherein the second battery comprises a second battery cell.
That is, the battery having a low temperature is heated and the battery having a high temperature is cooled. Therefore, the time spent for reducing the temperature between different batteries can be reduced, and the efficiency for reducing the temperature difference between the different batteries is effectively improved.
If the plurality of batteries are not cooled before the temperatures of the plurality of battery monomers are obtained, a valve corresponding to the second battery can be opened so as to realize the purpose of cooling the second battery.
If the plurality of batteries are being cooled before the temperatures of the plurality of battery cells are obtained, the cooling efficiency of the second battery can be increased, so that the purpose of more obvious cooling effect on the second battery compared with other batteries is achieved.
Further, the method 200 may further include: and stopping heating the first battery under the condition that the first temperature difference is smaller than the second preset temperature difference.
Alternatively, the second preset temperature difference may be the same as the first preset temperature difference.
Alternatively, the second preset temperature difference may be smaller than the first preset temperature difference. For example, the first preset temperature difference is 5 ℃, and the second preset temperature difference is 3 ℃.
The second preset temperature difference is set to be smaller than the first preset temperature, namely a certain return difference value is reserved. In this way, the frequent start and stop of the heating of the first battery can be reduced, effectively reducing the complexity of the operation.
In some situations, such as in direct cooling systems, if the battery temperature is low, the heating system in the system may not be operated to heat the low temperature battery. Thus, in some embodiments, a heating element may be provided on the battery cell. In this case, heating the first battery may include: the first battery is heated by controlling the heating member.
Alternatively, the heating element may be turned on and off by controlling a relay.
According to the technical scheme, the heating element is arranged and the first battery is heated by controlling the heating element, so that the purpose of heating the first battery is effectively achieved, and the application diversity of the embodiment of the application is improved.
Alternatively, the heating member may be a plate-like structure.
Alternatively, referring again to fig. 3, the heating member may be a film-like structure. The heating piece is arranged into a membranous structure, and the volume and the mass of the membrane are relatively small, so that the mass energy density and the volume energy density of the battery can be effectively improved.
Because the heating element is of a membranous structure, the thickness of the heating element according to the embodiment of the application can be relatively small. Illustratively, the thickness of the heating element may be less than or equal to 5mm. For example, the thickness of the heat conductive member may be 4mm, 3mm, 2mm, 1mm, or the like, or may be in the micrometer scale or the nanometer scale.
In the case that the heating member is of a film-like structure, that is, the heating member is a heating film, in order to reduce the probability of breakage of the heating film, the surface of the heating film may be coated with a film-preventing material, so as to reduce the probability of breakage of the heating film.
In order to achieve the effectiveness of heating the battery cells, the heating member may be disposed on the battery cells by means of, but not limited to, thermally conductive silicone. Like this, heat conduction silica gel can give the battery monomer with the heat transfer of heating member, and then can strengthen the heating effect of heating member.
In an embodiment of the application, each battery cell has at least three sides and at least one end face, each end face being connected to all sides, at least one of the end faces being provided with an electrode terminal.
The heating member may be provided on only one surface of the battery cell. For example, considering that a plurality of cells are generally disposed together by large-surface bonding, the heating member may be disposed on one of the sides having a smaller area. For another example, the heating member may be provided on an end surface where the electrode terminal is not provided. Such as a direct cooling plate of a battery cell, may incorporate the heating element.
Alternatively, the heating member may be disposed on a plurality of sides of the battery cell in order to improve the heating performance of the heating member. For example, the heating member may be disposed on all sides of the battery cell.
On the one hand, the grouping mode of the batteries is generally a mode of large-surface lamination, so that the heating element is arranged on at least one side surface with smaller area among the side surfaces, and the battery is easy to realize and simple to operate. On the other hand, the heating member is provided on the end surface where the electrode terminal is not provided, and is also easy to implement and simple to operate. In still another aspect, the heating member is disposed on at least one of the side surfaces having a smaller area and the end surface not provided with the electrode terminal, so that the contact area between the heating member and the battery cells is larger, so that the heating member heats the first battery cells at a faster rate, and the efficiency of reducing the temperature difference between the different batteries is greatly improved.
To more clearly describe embodiments of the present application, one specific implementation of method 200 is described in detail below in conjunction with FIG. 4.
In step 410, it is determined whether a first temperature difference between the temperature of the first battery cell and the temperature of the second battery cell is greater than 5 ℃.
If the first temperature difference is greater than 5 ℃, step 420 is performed. If not, step 470 is performed.
In step 420, a temperature of each of the plurality of cells and an average temperature of the plurality of cells are calculated.
In step 430, it is determined whether the temperature 1 of the first battery is less than the average temperature of the plurality of batteries.
If the average temperature of the plurality of batteries is less, step 440 is performed. If not, step 470 is performed.
In step 440, the current operating state is maintained and the heating mode of the first battery is turned on.
In step 450, it is determined whether the temperature difference between the temperature 1 of the first battery and the average temperature of the plurality of batteries is less than 0.5 ℃.
If it is less than 0.5 ℃, step 460 is performed. If not less than 0.5 ℃, step 430 is performed.
In step 460, the heating mode is exited.
In step 470, the current operating state is maintained.
In the embodiment of the present application, the sequence number of each process does not mean the sequence of execution sequence, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.
On the premise of no conflict, the embodiments and/or technical features in the embodiments described in the present application can be combined with each other arbitrarily, and the combined technical solutions should also fall into the protection scope of the present application.
Having described the temperature regulation method of the embodiment of the present application in detail, the temperature regulation apparatus of the embodiment of the present application will be described below. It should be understood that the temperature adjusting apparatus in the embodiment of the present application may perform the temperature adjusting method in the embodiment of the present application.
Fig. 5 shows a schematic block diagram of a temperature regulating device 500 according to an embodiment of the application. As shown in fig. 5, the temperature adjusting apparatus 500 may include:
an acquisition unit 510 for acquiring temperatures of a plurality of battery cells included in the plurality of batteries.
And the heating unit 520 is configured to heat the first battery when a first temperature difference between a temperature of the first battery and a temperature of the second battery is greater than a first preset temperature difference, where the first battery is a battery cell with a lowest temperature among the plurality of battery cells, and the second battery cell is a battery cell with a highest temperature among the plurality of battery cells, and the first battery includes the first battery cell.
Optionally, in the embodiment of the present application, the obtaining unit 510 is specifically configured to: in the process of cooling the plurality of batteries, the temperatures of the plurality of battery cells are obtained.
Optionally, in the embodiment of the present application, the obtaining unit 510 is specifically configured to: in the process of cooling the plurality of batteries by direct cooling, the temperatures of the plurality of battery cells are obtained.
Optionally, in an embodiment of the present application, the heating unit 520 is specifically configured to: in the process of cooling the plurality of batteries by direct cooling, the first battery is heated.
Optionally, in an embodiment of the present application, the obtaining unit 510 is further configured to: acquiring the temperature of each battery in the plurality of batteries and the average temperature of the plurality of batteries; the heating unit 520 is specifically configured to: and heating the first battery under the condition that the first temperature difference is larger than the first preset temperature difference and the temperature of the first battery in the plurality of batteries is smaller than the average temperature of the plurality of batteries.
Optionally, in the embodiment of the present application, the first battery unit is provided with a heating element, and the heating unit 520 is specifically configured to: the first battery is heated by controlling the heating member.
Alternatively, in an embodiment of the present application, the heating member is a film-like structure.
Alternatively, in an embodiment of the present application, the first battery cell has at least three side surfaces and at least one end surface, each end surface being connected to all the side surfaces, at least one of the end surfaces being provided with the electrode terminal; wherein the heating member is disposed on at least one of the side surfaces having a smaller area, and/or the heating member is disposed on an end surface where the electrode terminal is not disposed.
Optionally, in an embodiment of the present application, the temperature adjusting device 500 further includes: and the cooling unit is used for cooling the second battery under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, and the second battery comprises the second battery monomer.
Optionally, in an embodiment of the present application, the heating unit 520 is further configured to: stopping heating the first battery under the condition that the first temperature difference is smaller than the second preset temperature difference; wherein the second preset temperature difference is smaller than the first preset temperature difference.
Alternatively, in an embodiment of the present application, the temperature-regulating device 500 is a battery management system BMS.
Alternatively, the temperature adjusting device 500 may be a BMS, or may be a newly added device in the powered device.
It should be appreciated that the temperature adjustment device 500 may implement the corresponding operations in the method 200, and will not be described herein for brevity.
Fig. 6 is a schematic hardware configuration of a temperature adjustment device 600 according to an embodiment of the present application. The temperature regulating device 600 comprises a memory 601, a processor 602, a communication interface 603 and a bus 604. The memory 601, the processor 602, and the communication interface 603 are connected to each other by a bus 604.
The memory 601 may be a read-only memory (ROM), a static storage device, and a random access memory (random access memory, RAM). The memory 601 may store a program which, when executed by the processor 602, the processor 602 and the communication interface 603 are adapted to perform the steps of the method of temperature regulation of an embodiment of the application.
The processor 602 may employ a general-purpose central processing unit (central processing unit, CPU), microprocessor, application specific integrated circuit (application specific integrated circuit, ASIC), graphics processor (graphics processing unit, GPU) or one or more integrated circuits for executing associated programs to perform functions required by the elements of the apparatus of the present application or to perform the methods of temperature regulation of the present application.
The processor 602 may also be an integrated circuit chip with signal processing capabilities. In implementation, various steps of the method of temperature regulation of embodiments of the present application may be performed by integrated logic circuitry of hardware or instructions in software form in processor 602.
The processor 602 may also be a general purpose processor, a digital signal processor (digital signal processing, DSP), an ASIC, an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 601, and the processor 602 reads information in the memory 601, and in combination with its hardware, performs functions that the units included in the temperature adjustment device 600 of the embodiment of the present application need to perform, or performs the temperature adjustment method of the embodiment of the present application.
The communication interface 603 enables communication between the temperature regulated device 600 and other equipment or a communication network using a transceiver device such as, but not limited to, a transceiver.
Bus 604 may include a path for transferring information between components (e.g., memory 601, processor 602, communication interface 603) of temperature regulated device 600.
It should be noted that although the above-described temperature-regulated device 600 shows only a memory, a processor, a communication interface, those skilled in the art will appreciate that in a particular implementation, the temperature-regulated device 600 may also include other components necessary to achieve proper operation. Also, as will be appreciated by those skilled in the art, the temperature regulating device 600 may also include hardware devices that perform other additional functions, depending on the particular needs. Furthermore, it will be appreciated by those skilled in the art that the temperature regulating device 600 may also include only the components necessary to implement an embodiment of the present application, and not necessarily all of the components shown in FIG. 6.
Alternatively, the temperature adjusting device 600 may be a BMS, or may be a newly added device in the powered device.
The embodiments of the present application also provide a computer readable storage medium storing a computer program for executing the methods of the various embodiments of the present application described above.
The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.
The embodiments of the present application also provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described method of temperature regulation.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (22)
1. A method of temperature regulation, the method comprising:
acquiring temperatures of a plurality of battery monomers included in a plurality of batteries;
and heating the first battery under the condition that a first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than a first preset temperature difference, wherein the first battery monomer is the battery monomer with the lowest temperature in the plurality of battery monomers, the second battery monomer is the battery monomer with the highest temperature in the plurality of battery monomers, and the first battery comprises the first battery monomer.
2. The method of claim 1, wherein the obtaining the temperatures of the plurality of battery cells comprised by the plurality of batteries comprises:
and acquiring the temperatures of the plurality of battery cells in the process of cooling the plurality of batteries.
3. The method of claim 2, wherein the obtaining the temperatures of the plurality of battery cells comprises:
and in the process of cooling the batteries in a direct cooling mode, acquiring the temperatures of the battery monomers.
4. A method according to claim 3, wherein said heating the first battery comprises:
the first battery is heated during the cooling of the plurality of batteries by direct cooling.
5. The method according to any one of claims 1 to 4, further comprising:
acquiring the temperature of each battery in the plurality of batteries and the average temperature of the plurality of batteries;
the first battery is heated under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, and the method comprises the following steps:
and heating the first battery under the condition that the first temperature difference is larger than the first preset temperature difference and the temperature of the first battery in the plurality of batteries is smaller than the average temperature of the plurality of batteries.
6. The method of any one of claims 1 to 4, wherein the first battery cell has a heating element disposed thereon, the heating the first battery cell comprising:
and heating the first battery by controlling the heating element.
7. The method of claim 6, wherein the heating element is a membranous structure.
8. The method of claim 6, wherein the first cell has at least three sides and at least one end face, each end face being connected to all of the sides, at least one of the end faces being provided with an electrode terminal;
wherein the heating member is disposed on at least one of the side surfaces having a smaller area, and/or the heating member is disposed on the end surface where the electrode terminal is not disposed.
9. The method according to any one of claims 1 to 4, further comprising:
and cooling the second battery under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, wherein the second battery comprises the second battery monomer.
10. The method according to any one of claims 1 to 4, further comprising:
stopping heating the first battery under the condition that the first temperature difference is smaller than a second preset temperature difference;
wherein the second preset temperature difference is smaller than the first preset temperature difference.
11. A temperature regulating device, comprising:
an acquisition unit configured to acquire temperatures of a plurality of battery cells included in a plurality of batteries;
and the heating unit is used for heating the first battery under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, the first battery monomer is the battery monomer with the lowest temperature in the plurality of battery monomers, the second battery monomer is the battery monomer with the highest temperature in the plurality of battery monomers, and the first battery comprises the first battery monomer.
12. The apparatus according to claim 11, wherein the acquisition unit is specifically configured to:
and acquiring the temperatures of the plurality of battery cells in the process of cooling the plurality of batteries.
13. The apparatus according to claim 12, wherein the acquisition unit is specifically configured to:
And in the process of cooling the batteries in a direct cooling mode, acquiring the temperatures of the battery monomers.
14. The device according to claim 13, characterized in that the heating unit is specifically adapted to:
the first battery is heated during the cooling of the plurality of batteries by direct cooling.
15. The apparatus according to any one of claims 11 to 14, wherein the acquisition unit is further configured to:
acquiring the temperature of each battery in the plurality of batteries and the average temperature of the plurality of batteries;
the heating unit is specifically used for:
and heating the first battery under the condition that the first temperature difference is larger than the first preset temperature difference and the temperature of the first battery in the plurality of batteries is smaller than the average temperature of the plurality of batteries.
16. The device according to any one of claims 11 to 14, wherein a heating element is provided on the first battery cell, the heating unit being specifically adapted to:
and heating the first battery by controlling the heating element.
17. The apparatus of claim 16, wherein the heating element is a membranous structure.
18. The device of claim 16, wherein the first cell has at least three sides and at least one end face, each end face being connected to all of the sides, at least one of the end faces being provided with an electrode terminal;
wherein the heating member is disposed on at least one of the side surfaces having a smaller area, and/or the heating member is disposed on the end surface where the electrode terminal is not disposed.
19. The apparatus according to any one of claims 11 to 14, further comprising:
and the cooling unit is used for cooling the second battery under the condition that the first temperature difference between the temperature of the first battery monomer and the temperature of the second battery monomer is larger than the first preset temperature difference, and the second battery comprises the second battery monomer.
20. The apparatus according to any one of claims 11 to 14, wherein the heating unit is further configured to:
stopping heating the first battery under the condition that the first temperature difference is smaller than a second preset temperature difference;
wherein the second preset temperature difference is smaller than the first preset temperature difference.
21. A temperature regulating device, comprising:
A memory for storing a program;
a processor for executing the program stored in the memory, which processor is adapted to perform the method of temperature regulation according to any one of claims 1 to 10 when the program stored in the memory is executed.
22. A computer-readable storage medium storing a computer program for causing a computer to execute the temperature adjustment method according to any one of claims 1 to 10.
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| CN202310910256.5A CN116632421A (en) | 2023-07-24 | 2023-07-24 | Method, apparatus and computer readable storage medium for temperature regulation |
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| CN202310910256.5A CN116632421A (en) | 2023-07-24 | 2023-07-24 | Method, apparatus and computer readable storage medium for temperature regulation |
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