CN110875505A - Temperature control device and method - Google Patents
Temperature control device and method Download PDFInfo
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- CN110875505A CN110875505A CN201810996263.0A CN201810996263A CN110875505A CN 110875505 A CN110875505 A CN 110875505A CN 201810996263 A CN201810996263 A CN 201810996263A CN 110875505 A CN110875505 A CN 110875505A
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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
- H01M10/637—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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- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
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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
- H01M10/656—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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- 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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Abstract
The invention provides a temperature control device and a method, which are used for controlling the temperature of a heating device, and the temperature control device comprises: the shell is internally stored with a heat-conducting medium; the heat conduction layer is arranged at an interval with the heat conduction medium and is used for contacting with the heating device; the temperature control sub-modules comprise heat-conducting medium circulation pipelines, temperature sensors and micro water pumps, the heat-conducting medium circulation pipelines are communicated with heat-conducting media and are in contact with the heat-conducting layer, the temperature sensors are arranged on the heat-conducting layer and/or the heat-conducting medium circulation pipelines, and the micro water pumps are arranged on the heat-conducting medium circulation pipelines; the at least two temperature control sub-modules are used for controlling the micro water pump to work through monitoring the temperature sensors so as to respectively control the temperatures of at least two heating areas of the heating device. Therefore, the temperature difference of each heating area during the operation of the battery can be reduced, and the control effect on the temperature of the battery is improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a temperature control device and method.
Background
Generally, a battery needs a proper temperature range to perform a good charging and discharging operation, and an excessively high temperature or an excessively low temperature has different influences on the charging and discharging operation. For example, at too low a temperature, the chemical activity of the battery is reduced, and the chemical properties of the battery are damaged, and the service life of the battery is also affected; the battery has a large temperature rise in the charging and discharging process, and the internal or surface temperature of the battery is too high, so that the working characteristics of the battery are affected, and the service life of the battery is even shortened. In contrast, the battery temperature control device is generally used in the industry to control the battery temperature so that the battery can be charged and discharged well. However, the conventional battery temperature control device generally performs temperature control on the entire battery, and thus has a poor effect of controlling the battery temperature.
Disclosure of Invention
The embodiment of the invention aims to provide a temperature control device and a temperature control method, which solve the problem that the battery temperature control device generally controls the temperature of the whole battery, so that the control effect of the battery temperature is poor.
To achieve the above object, an embodiment of the present invention provides a temperature control apparatus for controlling a temperature of a heat generating device, including:
the heat conduction device comprises a shell, a heat conduction medium and a heat conduction medium, wherein the heat conduction medium is stored in the shell;
the heat conduction layer is arranged at an interval with the heat conduction medium and is used for contacting with the heating device;
the temperature control sub-modules comprise heat-conducting medium circulation pipelines, temperature sensors and micro water pumps, the heat-conducting medium circulation pipelines are communicated with the heat-conducting medium and are in contact with the heat-conducting layer, the temperature sensors are arranged on the heat-conducting layer and/or the heat-conducting medium circulation pipelines, and the micro water pumps are arranged on the heat-conducting medium circulation pipelines;
the at least two temperature control sub-modules are used for controlling the micro water pump to work by monitoring the temperature sensors so as to respectively control the temperatures of at least two heating areas of the heating device.
Optionally, the heat transfer medium circulation duct includes:
the liquid flow pipeline is attached to the surface of the heat conduction layer or arranged in the heat conduction layer and is arranged in a bent and spiral manner;
the inlet of the first liquid guide pipeline is communicated with the heat conducting medium, the outlet of the first liquid guide pipeline is communicated with the inlet of the liquid flow pipeline, and the first liquid guide pipeline is connected with the micro water pump;
and the inlet of the second liquid guide pipeline is communicated with the outlet of the liquid flow pipeline, and the outlet of the second liquid guide pipeline is communicated with the heat-conducting medium.
Optionally, the temperature sensor includes:
a first temperature sensor disposed at an outlet of the fluid flow conduit;
and the second temperature sensor is arranged on the surface of the heat conduction layer, which is used for contacting with the heating device.
Optionally, the temperature control device further includes:
and the heat insulation layer is arranged between the shell and the heat conduction layer and used for separating the heat conduction medium from the heat conduction layer.
Optionally, the temperature control device further includes:
the supporting layer is arranged between the shell and the heat insulation layer.
Optionally, the heat conducting layer has a pore, and the pore is filled with heat conducting silicone grease.
Optionally, the heat transfer medium is an ethylene glycol aqueous solution.
The embodiment of the invention also provides a temperature control method, which is applied to the device and comprises the following steps:
respectively acquiring temperature parameters of at least two heating areas of the heating device, which are acquired by at least two temperature control sub-modules;
and respectively controlling the micro water pumps corresponding to the temperature control submodules according to the temperature parameters of the at least two heating areas so as to respectively control the temperatures of the at least two heating areas.
Optionally, the temperature parameters of the at least two heating areas include N first temperature parameters and N second temperature parameters, where the first temperature parameters are obtained through a first temperature sensor, the second temperature parameters are obtained through a second temperature sensor, and N is an integer greater than or equal to 2;
the step of respectively controlling the micro water pumps corresponding to the temperature control submodules according to the temperature parameters of the at least two heating areas so as to respectively control the temperatures of the at least two heating areas comprises the following steps:
and respectively controlling the micro water pumps corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters so as to respectively control the temperatures of the at least two heating areas.
Optionally, the step of respectively controlling the micro water pumps corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters includes:
if the ith first temperature parameter is out of a first preset temperature range, controlling the micro water pump corresponding to the ith first temperature parameter to be started, and if the ith first temperature parameter is in the first preset temperature range, controlling the micro water pump corresponding to the ith first temperature parameter to be stopped; or
If the jth second temperature parameter is out of a second preset temperature range, controlling the micro water pump corresponding to the jth second temperature parameter to be started, and if the jth second temperature parameter is in the second preset temperature range, controlling the micro water pump corresponding to the jth second temperature parameter to be stopped;
wherein i and j are both positive integers less than or equal to N.
Optionally, the step of respectively controlling the micro water pumps corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters includes:
if the difference between the ith first temperature parameter and the jth first temperature parameter is greater than a first preset threshold value, controlling the micro water pump corresponding to the ith first temperature parameter and the jth first temperature parameter to be started; if the difference between the ith first temperature parameter and the jth first temperature parameter is smaller than the first preset threshold, controlling the micro water pump corresponding to the ith first temperature parameter and the jth first temperature parameter to be turned off; or
If the difference between the ith second temperature parameter and the jth second temperature parameter is greater than a first preset threshold value, controlling the micro water pump corresponding to the ith second temperature parameter and the jth second temperature parameter to be started; and if the difference between the ith second temperature parameter and the jth second temperature parameter is smaller than the first preset threshold, controlling the micro water pump corresponding to the ith second temperature parameter and the jth second temperature parameter to be turned off.
Optionally, the step of respectively controlling the micro water pumps corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters includes:
if the difference between the ith first temperature parameter and the ith second temperature parameter corresponding to the ith first temperature is greater than a second preset threshold value, controlling the micro water pump corresponding to the ith first temperature parameter and the ith second temperature parameter to be started;
and if the difference between the ith first temperature parameter and the ith second temperature parameter is smaller than the second preset threshold, controlling the micro water pump corresponding to the ith first temperature parameter and the ith second temperature parameter to be turned off.
In the embodiment of the invention, the temperatures of at least two heating areas of the heating device can be respectively controlled by the at least two temperature control sub-modules, namely the temperature difference control of each heating area of the battery is realized, so that the temperature difference of each heating area during the operation of the battery can be reduced, and the control effect on the temperature of the battery is improved.
Drawings
Fig. 1 is a structural diagram of a temperature control device according to an embodiment of the present invention;
FIG. 2 is a block diagram of another temperature control apparatus according to an embodiment of the present invention;
FIG. 3 is a block diagram of a fluid flow conduit provided by an embodiment of the present invention;
FIG. 4 is a block diagram of a temperature control sub-module according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a temperature control method according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 4, an embodiment of the present invention provides a temperature control apparatus for controlling a temperature of a heat generating device, the temperature control apparatus including:
the heat-conducting shell comprises a shell 1, wherein a heat-conducting medium is stored in the shell 1;
the heat conduction layer 2 is arranged at an interval with the heat conduction medium, and the heat conduction layer 2 is used for contacting with the heating device;
the temperature control sub-modules 3 comprise heat-conducting medium circulation pipelines 31, temperature sensors 32 and micro water pumps 33, the heat-conducting medium circulation pipelines 31 are communicated with heat-conducting media and are in contact with the heat-conducting layer 2, the temperature sensors 32 are arranged on the heat-conducting layer 2 and/or the heat-conducting medium circulation pipelines 31, and the micro water pumps 33 are arranged on the heat-conducting medium circulation pipelines 31;
the at least two temperature control sub-modules 3 are used for controlling the operation of the micro water pump 33 through monitoring the temperature sensor 32 so as to respectively control the temperatures of at least two heating areas of the heating device.
In the embodiment of the present invention, the heating device may be a device capable of generating heat energy, such as a chip, a hard disk, a battery, a high voltage switch cabinet, or an electronic device, and is not limited thereto; the heating device usually has certain requirements on temperature during operation or work. Further, the at least two heat generating regions of the heat generating device may be heat generating regions located on a surface of the heat generating device.
The temperature control device of the embodiment of the invention can respectively control the temperature of each heating area of the heating device, and the heat exchange can be respectively carried out on each heating area of the heating device through the heat conduction layer. For example, when the temperature of a certain heating area of the heating device is too high, the temperature control device can perform cooling control on the heating area; when the temperature of a certain heating area of the heating device is too low, the temperature control device can carry out temperature rise control on the heating area; specifically, for example, the temperature of a certain heating area of the heating device is-30 ℃, which is lower than a preset temperature of-20 ℃, and temperature rise control is required, and the heat-conducting medium is a liquid at 15 ℃, and at this time, the micro water pump in the temperature control submodule can be started, so that the heat-conducting medium can be transported to the heat-conducting layer in contact with the heating area in a flowing manner, so that heat exchange is performed between the heat-conducting layer and the heating area, and the temperature of the heating area can be raised; the specific manner of temperature reduction control is the same, and will not be described herein.
The housing 1 may refer to a layered structure; the housing 1 is mainly used for mechanically protecting the temperature control device, isolating the temperature control device from electricity, liquid, gas or the like, and also has the functions of heat insulation and heat preservation. Preferably, as shown in fig. 1, the housing 1 may include a housing 11 and a liquid storage layer 12, the housing 11 may serve as an outer layer of the entire temperature control device to perform the functions of isolation and protection, the liquid storage layer 12 stores a heat conducting medium, and a certain amount of pore space may be provided inside the liquid storage layer 12 to reduce the influence caused by expansion or contraction of the heat conducting medium. The heat conducting medium can be liquid or gas for transferring heat so as to heat or radiate the heating device; preferably, the heat conducting medium may be a liquid within a certain temperature range, and particularly, a separate temperature control system may be disposed in the housing 1, and the temperature of the liquid may be always maintained within a certain temperature range by the temperature control system. The previously known heat-generating devices usually have a certain temperature requirement during operation or working, whereby this temperature range can be matched to the required temperature of the heat-generating device during working. For example, if the heat generating device is a battery, the heat transfer medium may be a liquid having a temperature range of 15 to 35 degrees celsius, and the temperature range of 15 to 35 degrees celsius may make the chemical characteristics of the battery good, thereby enabling good charging and discharging operations. Specifically, the heat-conducting medium may be water, silicone oil, or an ethylene glycol aqueous solution, etc.; of course, the heat conducting medium may be other mediums, and is not limited thereto.
Because the temperature control device needs to be in contact with the heating device to transfer heat, and the solid surface has certain roughness, namely gaps or gullies are generally present on the contact interface of the temperature control device and the heating device, the gaps are filled with air which is a poor thermal conductor and can generate thermal contact resistance, the heat exchange efficiency is seriously influenced, and the control effect of the temperature control device is greatly reduced or even cannot play a role. Therefore, in order to reduce the gap between the temperature control device and the heat generating device, increase the contact area, and reduce the thermal contact resistance generated between the heat generating device and the contact surface of the temperature control device, the heat conductive layer 2 needs to be provided. The heat conducting layer 2 can be a heat conducting structure made of a heat conducting medium material with good heat conducting performance, and can be mainly made of heat conducting silica gel and other auxiliary materials such as oxides. Specifically, the heat conduction layer 2 may be a heat conduction silica gel layer or a heat conduction silica gel sheet, and of course, may also be a heat conduction adhesive tape, a heat conduction gasket, heat conduction silicone grease, a heat conduction adhesive, or the like; and is not limited thereto. In addition, the heat conduction layer 2 can also play roles of insulation, shock absorption, sealing and the like.
It should be noted that, the heat conduction layer 2 with a corresponding area size may be arranged according to the surface area size of the heat generating device or the known heat generating area size, so that waste is not caused, and the cost is saved.
The at least two temperature control sub-modules 3 can be uniformly and tightly arranged together; it is mainly used for monitoring temperature and controlling temperature. The temperature sensor 32 can be used for collecting the temperature of the heating area of the heating device, and the temperature control submodule can be used for monitoring the temperature parameter collected by the temperature sensor 32; in addition, the temperature of the heat generating region of the heat generating device can be controlled by the heat conducting medium circulation pipe 31 and the micro water pump 33, and both the temperature sensor 32 and the micro water pump 33 can be electrically connected with the chip. The heat-conducting medium circulation pipe 31 may be a pipe loop that realizes a circulation flow of the heat-conducting medium, and whether the heat-conducting medium flows in the heat-conducting medium circulation pipe 31 may be determined by turning on or off the micro-water pump 33, so as to affect the temperature of the heat-generating device. Wherein, micro water pump 33's rotational speed can change according to the temperature of the device that generates heat, and heat transfer ability is stronger when the rotational speed is higher, can satisfy general heat transfer demand when the rotational speed is lower, and the control to the device temperature that generates heat that like this can temperature control device is more nimble and elasticity.
The work flow of the temperature control device can be as follows: the battery is charging or discharging, heat is continuously generated in the process, and due to different working states, the rate and the position of heat generation are different; the temperature control device is contacted with the battery shell, each temperature sensor 32 can obtain the temperature parameter of the corresponding heating area and send the temperature parameters to the chip in the temperature control submodule, the chip can analyze and process the sent temperature parameters to judge whether to start the micro water pump 33 corresponding to each temperature parameter according to the temperature parameters, and therefore liquid in the heat-conducting medium circulation pipeline 31 is continuously updated, and heat transfer is achieved.
In the embodiment of the invention, the at least two temperature control sub-modules 3 control the operation of the micro-water pump 33 by monitoring the temperature sensors 32, and can respectively control the temperatures of at least two heating areas of the heating device, i.e. realize the temperature differential control of each heating area of the battery, so that the temperature difference of each heating area can be reduced when the battery works, and the control effect on the temperature of the battery is improved.
Alternatively, the heat transfer medium circulation duct 31 includes:
the liquid flow pipeline 311 is attached to the surface of the heat conduction layer 2 or arranged in the heat conduction layer 2, and is arranged in a bent and spiral manner;
the inlet of the first liquid guide pipeline 312 is communicated with the heat conducting medium, the outlet of the first liquid guide pipeline 312 is communicated with the inlet of the liquid flow pipeline 311, and the first liquid guide pipeline 312 is connected with the micro water pump 33;
and a second liquid guide pipeline 313, wherein an inlet of the second liquid guide pipeline 313 is communicated with an outlet of the liquid flow pipeline 311, and an outlet of the second liquid guide pipeline 313 is communicated with the heat-conducting medium.
In the present embodiment, the liquid flow pipe 311 is mainly used to transfer heat between the heat transfer medium and the surface of the heat generating device. It is known that the heat conducting layer 2 can be a heat conducting silica gel layer or a heat conducting silica gel layer, and when the heat conducting layer 2 is a heat conducting silica gel layer, the liquid flow pipeline 311 can be arranged in the heat conducting layer 2, so that the periphery of the liquid flow pipeline 311 is wrapped by the heat conducting layer 2, and heat can be transferred more uniformly; when the heat conducting layer 2 is a heat conducting silicone sheet, the liquid flow pipe 311 can be attached to the surface of the heat conducting silicone sheet, so that heat can be transferred well. Of course, the flow conduit 311 can be arranged in other ways, and is not limited thereto. The liquid flow pipe 311 is disposed in a curved and spiral shape, and particularly, the shape of the liquid flow pipe 311 shown in fig. 3 can be referred to, by which the parts of the liquid flow pipe 311 can be made compact and uniform, thereby facilitating heat transfer. Of course, the shape of the liquid flow pipe 311 may be other shapes, such as a planar square, a planar circle, a three-dimensional square, an ellipse, etc., which are not limited to this, and the temperature control device may be designed according to the shape of the heat generating device, so that the temperature control device is suitable for various heat generating devices. In addition, the first liquid guiding pipe 312 mainly serves as a passage for conveying the heat transfer medium from the housing 1 into the liquid flow pipe 311, and the second liquid guiding pipe 313 mainly serves as a passage for discharging the heat transfer medium from the liquid flow pipe 311, and it can be understood that the first liquid guiding pipe 312, the second liquid guiding pipe 313 and the liquid flow pipe 311 form a loop for circulating the heat transfer medium, so that the heat transfer medium can be continuously refreshed.
Therefore, the heat-conducting medium can be more reliably and reasonably transferred, and the temperature control effect of the temperature control device can be improved.
Optionally, the temperature sensor 32 includes:
a first temperature sensor 321, wherein the first temperature sensor 321 is arranged at the outlet of the liquid flow pipeline 311;
and a second temperature sensor 322, the second temperature sensor 322 being disposed on a surface of the heat conductive layer 2 for contact with the heat generating device.
In this embodiment, the first temperature sensor 321 is disposed at the outlet of the liquid flow pipe 311, and it can be understood that the temperature detected by the first temperature sensor 321 is the temperature of the heat-conducting medium flowing out of the liquid flow pipe 311 for transferring heat with the heat generating device, and the temperature can be understood as the temperature reflected after the heat-conducting medium and the heat generating device realize heat exchange; while the second temperature sensor 322 is disposed on the surface of the heat conductive layer 2 for contacting with the heat generating device, it can be understood that the second temperature sensor 322 detects the temperature of a certain heat generating area on the surface of the heat generating device. It can be understood that the temperature parameters detected by the first temperature sensor 321 and the second temperature sensor 322 are beneficial for the temperature control submodule 3 to decide whether temperature control needs to be performed on a certain heating area on the surface of the heating device.
It should be noted that the second temperature sensor 322 may be thermally insulated from the contact interface of the heat conductive layer 2; for example, a heat insulating tape or a heat insulating gasket or the like may be provided therebetween to insulate heat from the heat conductive layer portion; like this, can be favorable to the temperature parameter that second temperature sensor 322 detected mainly be the temperature of the device's that generates heat the region that generates heat to reduce the interference that other temperatures produced, promoted the accuracy.
In this way, the temperature difference between the respective heat generating regions of the heat generating device can be further reduced by the first temperature sensor 321 and the second temperature sensor 322, and the temperature of the heat generating device can be controlled more evenly.
Optionally, the temperature control device further comprises:
and the heat insulation layer 4 is arranged between the shell 1 and the heat conduction layer 2 and used for separating the heat conduction medium from the heat conduction layer 2. Wherein, the heat insulation layer 4 is mainly used for insulating heat; it can be made of heat insulating material, such as rock wool, silicate, etc.; preferably; the heat insulation layer 4 may be a layer structure having a cavity therein, such as an aerogel vacuum panel, a vacuum panel, or the like. It should be noted that the heat insulation layer 4 may also realize a supporting function by selecting a material, that is, a function of heat insulation support is provided, which is not limited herein.
In this way, the heat-conducting medium is separated from the heat-conducting layer 2 by the heat-insulating layer 4, so that heat isolation can be realized, and uncontrolled heat conduction between the heat-conducting layer 2 and the housing 1 is avoided.
Optionally, the temperature control device further comprises: and the supporting layer 5 is arranged between the shell 1 and the heat insulation layer 4. The supporting layer 5 mainly plays a role in supporting the structure, and can also stabilize the shell 1, the heat insulating layer and the heat conducting layer 2. The support layer 5 may be made of a material having high strength, such as plastic.
In the present embodiment, the structural strength of the temperature control device can be increased and stabilized by the support layer 5.
Optionally, the heat conducting layer 2 has pores, and the pores are filled with heat conducting silicone grease. It has been known in the foregoing embodiments that the presence of a gap between the temperature control device and the heat generating device generates thermal contact resistance; therefore, for better solving the problems, when the heat conduction layer 2 is in contact with the heating device, certain pressure is generated to extrude the heat conduction silicone grease from the heat conduction layer 2, the extruded heat conduction silicone grease can be filled in the contact surface between the heat conduction layer 2 and the heating device, the roughness is reduced, and the contact thermal resistance is effectively reduced.
In this way, the thermal contact resistance can be further reduced by filling the pores of the heat conductive layer 2 with the heat conductive silicone grease, thereby improving the heat conductive efficiency.
Optionally, the heat transfer medium is an aqueous solution of ethylene glycol. Therefore, the ethylene glycol aqueous solution is used as a heat-conducting medium, the environmental adaptability of the temperature control device can be improved, and the cost performance is higher. Of course, other mediums can be used as the heat conducting medium, which has been described in detail above and will not be described herein again.
An embodiment of the present invention further provides a temperature control method, which is applied to the temperature control device, and as shown in fig. 5, the method includes:
and 501, respectively acquiring temperature parameters of at least two heating areas of the heating device, which are acquired by at least two temperature control sub-modules.
Wherein the heat generating region may be a region of the heater surface. Specifically, the temperature parameter may be acquired by a temperature sensor in the temperature control submodule. Each temperature control submodule corresponds to one heating area; for example, the temperature control device has 3 temperature control submodules A, B and C, and when the temperature control device is in contact with the surface of the heat generating device battery, the heat generating region a in contact with the temperature control submodule a corresponds to the temperature control submodule a, and similarly, the heat generating region B corresponds to the temperature control submodule B, and the heat generating region C corresponds to the temperature control submodule C.
And 502, respectively controlling the micro water pumps corresponding to the temperature control submodules according to the temperature parameters of the at least two heating areas so as to respectively control the temperatures of the at least two heating areas.
It has been known in the foregoing that the temperature of each region on the surface of a heating device, for example, a battery, may change during charging and discharging operations, and the obtained temperature parameters may be different, so that it is necessary to perform analysis and judgment according to the temperature parameters to determine whether a micro water pump corresponding to a temperature control submodule is turned on or off, so as to control the temperatures of at least two heating regions respectively, thereby achieving the purpose of eliminating the temperature difference between the heating regions. Still taking the example in step 501 as an example, assume that the operating temperature range of the battery is-20 degrees celsius to 55 degrees celsius, while the temperature parameter of a is 60 degrees celsius, the temperature parameter of b is 50 degrees celsius, and the temperature parameter of c is-30 degrees celsius; it can be known that the temperatures of a and c are not in the working temperature range, and it is necessary to separately dissipate heat from a and heat c to make their temperatures reach the working temperature range. In this way, the temperatures of the at least two heating areas are respectively controlled according to the temperature parameters of the at least two heating areas; the temperature difference control of each heating area of the battery can be realized, and the temperature difference of each heating area during the work of the battery is reduced, so that the control effect on the temperature of the battery is improved.
Optionally, the temperature parameters of the at least two heating areas include N first temperature parameters and N second temperature parameters, where the first temperature parameters are obtained through the first temperature sensor, the second temperature parameters are obtained through the second temperature sensor, and N is an integer greater than or equal to 2;
the above-mentioned miniature water pump that corresponds according to at least two regional temperature parameters that generate heat, the difference control temperature control submodule piece to the step of controlling at least two regional temperatures that generate heat respectively includes:
and respectively controlling the micro water pumps corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters so as to respectively control the temperatures of at least two heating areas.
The micro water pumps corresponding to the N first temperature parameters and the N second temperature parameters may be understood as micro water pumps corresponding to the N first temperature sensors and the N second temperature sensors, or may be understood as micro water pumps corresponding to the N temperature control sub-modules. For example, in the example set forth in step 501, temperature control submodules A, B and C have first sensors A1, B1 and C1, respectively, second sensors A2, B2 and C2, and micro water pumps A, B and C; it can be understood that A, A1 corresponds to a micro water pump A of A2, B, B1 corresponds to a micro water pump B of B2, C, C1 corresponds to a micro water pump C of C2; namely, a first temperature parameter obtained by a first sensor A1 in the temperature control submodule A corresponds to the micro water pump A; the rest is analogized and is not described in detail.
Like this, through according to a plurality of first temperature parameters of N and a plurality of second temperature parameter, the miniature water pump that a plurality of first temperature parameters of N and a plurality of second temperature parameter of N respectively control opens or closes, can make control more meticulous to it is better to make temperature control device's temperature control effect.
Optionally, the step of respectively controlling the micro water pump corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters includes:
if the ith first temperature parameter is out of a first preset temperature range, controlling the micro water pump corresponding to the ith first temperature parameter to be started, and if the ith first temperature parameter is in the first preset temperature range, controlling the micro water pump corresponding to the ith first temperature parameter to be stopped; or
If the jth second temperature parameter is out of a second preset temperature range, controlling the micro water pump corresponding to the jth second temperature parameter to be started, and if the jth second temperature parameter is in the second preset temperature range, controlling the micro water pump corresponding to the jth second temperature parameter to be stopped;
wherein i and j are both positive integers less than or equal to N.
In the present embodiment, it is known that a heat generating device such as a battery needs to be in a proper temperature range during operation, so that the heat generating device can operate well. The temperature parameter of the heating area of the heating device is acquired by the second temperature sensor, so that the second preset temperature range can be matched with a temperature interval in which the heating device works well; the first temperature parameter is the temperature reflected after the heat transfer between the heat-conducting medium and the heating area is carried out, the temperature difference between the first temperature parameter and the second temperature parameter is usually smaller through experiments, and the first preset temperature range can be set to be close to the second preset temperature range. Preferably, in a case where the heat generating device is determined as a battery, the first preset temperature range may be 0 to 50 degrees celsius, and the second preset temperature range may be-20 to 55 degrees celsius. Of course, the first preset temperature range and the second preset temperature range may be the same or different, and are not limited thereto.
Therefore, the temperature control effect of the temperature control device can be further improved, and the temperature of the heating device is ensured to be in a proper temperature range so as to work well.
Optionally, the step of respectively controlling the micro water pump corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters includes:
if the difference between the ith first temperature parameter and the jth first temperature parameter is greater than a first preset threshold value, controlling the micro water pump corresponding to the ith first temperature parameter and the jth first temperature parameter to be started; if the difference between the ith first temperature parameter and the jth first temperature parameter is smaller than a first preset threshold value, controlling the micro water pump corresponding to the ith first temperature parameter and the jth first temperature parameter to be closed; or
If the difference between the ith second temperature parameter and the jth second temperature parameter is greater than a first preset threshold value, controlling the micro water pump corresponding to the ith second temperature parameter and the jth second temperature parameter to be started; and if the difference between the ith second temperature parameter and the jth second temperature parameter is smaller than a first preset threshold value, controlling the micro water pump corresponding to the ith second temperature parameter and the jth second temperature parameter to be closed.
In the present embodiment, in order to provide good performance to the battery, the battery is usually provided with good consistency, and during the charging or discharging process of the battery, there may be various differences between the temperatures of the respective heat generating regions on the surface of the battery, that is, there may be temperature inconsistency between the respective heat generating regions of the battery, and the temperature inconsistency may also result in low consistency of the battery. In order to solve the above problem, it is necessary to monitor the difference between each first temperature parameter and each second temperature parameter, and then control the temperature of each heat generating region of the battery according to the monitored data to eliminate the difference. For example, the first preset threshold is 6 degrees celsius, the first temperature parameter a1 is 50 degrees celsius, the first temperature parameter a2 is 60 degrees celsius, and the first temperature parameter A3 is 55 degrees celsius, where a difference between a1 and a2 is 10 degrees celsius and is greater than the first preset threshold of 6 degrees celsius, it may be considered that the temperatures of the heat generation region corresponding to a1 and the heat generation region corresponding to a2 are inconsistent, and the two regions need to be controlled and adjusted respectively; at this time, if the micro water pump corresponding to a1 and the micro water pump corresponding to B1 are working, the micro water pump corresponding to a1 and the micro water pump corresponding to B1 may be turned off, respectively; if the micro-water pump corresponding to a1 and the micro-water pump corresponding to B1 are not operated, the temperature detection can be continued.
Therefore, the temperature difference of each heating area when the battery works can be further reduced, so that the battery has good consistency and better performance.
Optionally, the step of respectively controlling the micro water pump corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters includes:
if the difference between the ith first temperature parameter and the ith second temperature parameter corresponding to the ith first temperature is greater than a second preset threshold value, controlling the micro water pump corresponding to the ith first temperature parameter and the ith second temperature parameter to be started;
and if the difference between the ith first temperature parameter and the ith second temperature parameter is smaller than a second preset threshold value, controlling the micro water pump corresponding to the ith first temperature parameter and the ith second temperature parameter to be turned off.
In this embodiment, it is known that the first temperature parameter can be understood as a temperature exhibited after heat exchange occurs between the heat conducting medium and the heating device, and the second temperature parameter can be understood as a temperature of a heating area of the heating device, so that if a difference between the first temperature parameter and the second temperature parameter obtained by the same temperature control submodule is too large, heat exchange can be considered invalid, that is, the temperature control submodule fails; thus, the difference between the first temperature parameter and the second temperature parameter needs to be at a suitable value, i.e. a second predetermined threshold; otherwise, the risk of heat exchange failure exists. For example, the second preset threshold is 10 degrees celsius, the temperature control submodule a obtains a first temperature parameter a and a second temperature parameter B, the temperature parameter a is 50 degrees celsius, the temperature parameter B is 25 degrees celsius, and a difference between the first temperature parameter a and the second temperature parameter B is greater than the second preset threshold by 10 degrees celsius, and then the micro water pump corresponding to the first temperature parameter a and the second temperature parameter B, that is, the micro water pump in the temperature control submodule a, needs to be started. Preferably, the second preset threshold may be 20 degrees celsius; of course, the second preset threshold may be other temperatures, which is not limited.
According to the embodiment, the temperature control failure of each temperature control submodule can be effectively avoided, so that the stability of the temperature control device is good.
In this way, in this embodiment, the micro water pumps corresponding to the temperature control submodules are respectively controlled according to the temperature parameters of the at least two heating areas, so as to respectively control the temperatures of the at least two heating areas; the temperature difference control of each heating area of the battery can be realized, and the temperature difference of each heating area during the work of the battery is reduced, so that the control effect on the temperature of the battery is improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A temperature control apparatus for controlling a temperature of a heat generating device, characterized by comprising:
the heat conduction device comprises a shell, a heat conduction medium and a heat conduction medium, wherein the heat conduction medium is stored in the shell;
the heat conduction layer is arranged at an interval with the heat conduction medium and is used for contacting with the heating device;
the temperature control sub-modules comprise heat-conducting medium circulation pipelines, temperature sensors and micro water pumps, the heat-conducting medium circulation pipelines are communicated with the heat-conducting medium and are in contact with the heat-conducting layer, the temperature sensors are arranged on the heat-conducting layer and/or the heat-conducting medium circulation pipelines, and the micro water pumps are arranged on the heat-conducting medium circulation pipelines;
the at least two temperature control sub-modules are used for controlling the micro water pump to work by monitoring the temperature sensors so as to respectively control the temperatures of at least two heating areas of the heating device.
2. The temperature control device of claim 1, wherein the heat transfer medium circulation conduit comprises:
the liquid flow pipeline is attached to the surface of the heat conduction layer or arranged in the heat conduction layer and is arranged in a bent and spiral manner;
the inlet of the first liquid guide pipeline is communicated with the heat conducting medium, the outlet of the first liquid guide pipeline is communicated with the inlet of the liquid flow pipeline, and the first liquid guide pipeline is connected with the micro water pump;
and the inlet of the second liquid guide pipeline is communicated with the outlet of the liquid flow pipeline, and the outlet of the second liquid guide pipeline is communicated with the heat-conducting medium.
3. The temperature control apparatus according to claim 2, wherein the temperature sensor comprises:
a first temperature sensor disposed at an outlet of the fluid flow conduit;
and the second temperature sensor is arranged on the surface of the heat conduction layer, which is used for contacting with the heating device.
4. The temperature control apparatus of claim 1, further comprising:
and the heat insulation layer is arranged between the shell and the heat conduction layer and used for separating the heat conduction medium from the heat conduction layer.
5. The temperature control apparatus of claim 4, further comprising:
the supporting layer is arranged between the shell and the heat insulation layer.
6. The temperature control device of claim 1, wherein the thermally conductive layer has pores, and the pores are filled with thermally conductive silicone grease.
7. The temperature control apparatus of claim 1, wherein the heat transfer medium is an aqueous glycol solution.
8. A temperature control method applied to the temperature control device according to any one of claims 1 to 7, characterized by comprising:
respectively acquiring temperature parameters of at least two heating areas of the heating device, which are acquired by at least two temperature control sub-modules;
and respectively controlling the micro water pumps corresponding to the temperature control submodules according to the temperature parameters of the at least two heating areas so as to respectively control the temperatures of the at least two heating areas.
9. The method according to claim 8, applied to the temperature control device according to claim 3, wherein the temperature parameters of the at least two heat generating areas include N first temperature parameters and N second temperature parameters, wherein the first temperature parameters are temperature parameters obtained by a first temperature sensor, the second temperature parameters are temperature parameters obtained by a second temperature sensor, and N is an integer greater than or equal to 2;
the step of respectively controlling the micro water pumps corresponding to the temperature control submodules according to the temperature parameters of the at least two heating areas so as to respectively control the temperatures of the at least two heating areas comprises the following steps:
and respectively controlling the micro water pumps corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters so as to respectively control the temperatures of the at least two heating areas.
10. The method according to claim 9, wherein the step of controlling the micro water pump corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters comprises:
if the ith first temperature parameter is out of a first preset temperature range, controlling the micro water pump corresponding to the ith first temperature parameter to be started, and if the ith first temperature parameter is in the first preset temperature range, controlling the micro water pump corresponding to the ith first temperature parameter to be stopped; or
If the jth second temperature parameter is out of a second preset temperature range, controlling the micro water pump corresponding to the jth second temperature parameter to be started, and if the jth second temperature parameter is in the second preset temperature range, controlling the micro water pump corresponding to the jth second temperature parameter to be stopped;
wherein i and j are both positive integers less than or equal to N.
11. The method according to claim 9, wherein the step of controlling the micro water pump corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters comprises:
if the difference between the ith first temperature parameter and the jth first temperature parameter is greater than a first preset threshold value, controlling the micro water pump corresponding to the ith first temperature parameter and the jth first temperature parameter to be started; if the difference between the ith first temperature parameter and the jth first temperature parameter is smaller than the first preset threshold, controlling the micro water pump corresponding to the ith first temperature parameter and the jth first temperature parameter to be turned off; or
If the difference between the ith second temperature parameter and the jth second temperature parameter is greater than a first preset threshold value, controlling the micro water pump corresponding to the ith second temperature parameter and the jth second temperature parameter to be started; and if the difference between the ith second temperature parameter and the jth second temperature parameter is smaller than the first preset threshold, controlling the micro water pump corresponding to the ith second temperature parameter and the jth second temperature parameter to be turned off.
12. The method according to claim 9, wherein the step of controlling the micro water pump corresponding to the N first temperature parameters and the N second temperature parameters to be turned on or off according to the N first temperature parameters and the N second temperature parameters comprises:
if the difference between the ith first temperature parameter and the ith second temperature parameter corresponding to the ith first temperature is greater than a second preset threshold value, controlling the micro water pump corresponding to the ith first temperature parameter and the ith second temperature parameter to be started;
and if the difference between the ith first temperature parameter and the ith second temperature parameter is smaller than the second preset threshold, controlling the micro water pump corresponding to the ith first temperature parameter and the ith second temperature parameter to be turned off.
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| CN201810996263.0A CN110875505A (en) | 2018-08-29 | 2018-08-29 | Temperature control device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509333A (en) * | 2020-03-23 | 2020-08-07 | 江铃汽车股份有限公司 | Partitioned thermal management control method for battery pack |
| CN114814157A (en) * | 2022-06-24 | 2022-07-29 | 中国煤炭地质总局勘查研究总院 | Coal bed gas bio-enrichment experiment system |
-
2018
- 2018-08-29 CN CN201810996263.0A patent/CN110875505A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509333A (en) * | 2020-03-23 | 2020-08-07 | 江铃汽车股份有限公司 | Partitioned thermal management control method for battery pack |
| CN114814157A (en) * | 2022-06-24 | 2022-07-29 | 中国煤炭地质总局勘查研究总院 | Coal bed gas bio-enrichment experiment system |
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