CN114614146A - Temperature equalizing system and temperature equalizing control method - Google Patents

Temperature equalizing system and temperature equalizing control method Download PDF

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Publication number
CN114614146A
CN114614146A CN202210261748.1A CN202210261748A CN114614146A CN 114614146 A CN114614146 A CN 114614146A CN 202210261748 A CN202210261748 A CN 202210261748A CN 114614146 A CN114614146 A CN 114614146A
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China
Prior art keywords
temperature
module
box body
airflow
difference information
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Pending
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CN202210261748.1A
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Chinese (zh)
Inventor
姜洋
赵晓凤
龙曦
张思
朱禹
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Dongfeng Motor Corp
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Dongfeng Motor Corp
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Priority to CN202210261748.1A priority Critical patent/CN114614146A/en
Publication of CN114614146A publication Critical patent/CN114614146A/en
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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
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • 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
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)

Abstract

The embodiment of the application discloses a temperature equalizing system and a temperature equalizing control method, relates to the technical field of battery temperature control, and solves the problem that the temperature difference of the environment is too large when a power battery works in the related technology. The temperature equalizing system comprises a box body, a temperature guide plate, an airflow generation module and an induction control module, wherein the box body is used for placing a battery module; the temperature guide plate is arranged on the battery module in the box body and is used for assisting the battery module to exchange heat with the outside; the airflow generation module is arranged in the box body and used for generating airflow flowing from a high-temperature position to a low-temperature position; the induction control module is used for acquiring temperature difference information in the box body and controlling the working state of the airflow generation module according to the temperature difference information. The temperature equalizing system and the temperature equalizing control method are used for equalizing the ambient temperature of the power battery during working.

Description

Temperature equalizing system and temperature equalizing control method
Technical Field
The embodiment of the application relates to but is not limited to the field of battery temperature control, in particular to a temperature equalizing system and a temperature equalizing control method.
Background
In a new energy automobile, a power battery can work well only at a proper temperature, and a plurality of working characteristic parameters of a battery core, such as internal resistance, voltage, a system chip, available capacity, charge and discharge efficiency and battery life, are influenced by the rise of the temperature. Severe cases will also lead to thermal runaway; the temperature is crossed lowly then can influence the charge-discharge performance of battery, lead to the unable start-up of vehicle, user's travelling comfort is poor, meanwhile, the difference in temperature between the battery module also is the key factor that influences power battery work, no matter in heating or cooling process, the difference in temperature between the battery module is too big can lead to each electric core to work under the temperature of difference, make the uniformity of electric core worsen, thereby seriously influence the internal resistance of electric core, charge-discharge performance and cycle life, have important influence to the performance and the life-span of battery package.
At present, a power battery mainly adopts a liquid cooling mode, the heat dissipation efficiency is higher compared with air cooling, the liquid cooling heat dissipation is mainly that a liquid cooling plate is arranged at the bottom of a battery module in a battery pack, when the battery module operates in a high-temperature environment, heat generated by the battery module is transferred to the liquid cooling plate, and the battery module is cooled by taking away the heat through low-temperature cooling liquid flowing in the liquid cooling plate; when the battery module runs under a low-temperature environment, the liquid cooling plate is heated by high-temperature cooling liquid flowing in the liquid cooling plate, and the liquid cooling plate transfers heat to the battery module to heat the battery module. The battery module can work at a proper temperature by two measures of liquid cooling and liquid heating.
Above-mentioned scheme, adopt the hot technical scheme of liquid cooling liquid, can effectual assurance battery module warm up under high temperature decline gentle low temperature, however do not adopt extra measure at the samming angle, only rely on the structural feature and the metal heat conductivility of liquid cooling board itself to balance the whole difference in temperature of liquid cooling board, like cold plate internal flow homogeneity, the high position heat of liquid cooling board temperature can transmit the position etc. that liquid cooling board temperature is low through liquid cooling board, the samming effect is poor, seriously influence power battery's performance and life-span.
Disclosure of Invention
The temperature equalizing system and the temperature equalizing control method provided by the embodiment of the application can equalize the ambient temperature of the power battery during working, and effectively improve the performance and the service life of the power battery.
In a first aspect, an embodiment of the present application provides a temperature equalization system, which includes a box, a temperature conduction plate, an airflow generation module, and an induction control module, where the box is used for placing a battery module; the temperature guide plate is arranged on the battery module in the box body and is used for assisting the battery module to exchange heat with the outside; the airflow generation module is arranged in the box body and used for generating airflow flowing from a high-temperature position to a low-temperature position; the induction control module is used for acquiring temperature difference information in the box body and controlling the working state of the airflow generation module according to the temperature difference information.
According to the temperature equalizing system provided by the embodiment of the application, the box body provides a stable working environment for the battery module, the influence of the external environment on the battery module is avoided, meanwhile, a foundation is provided for the establishment of the temperature equalizing system, the temperature guide plate is used for assisting the heat exchange between the battery module and the outside, concretely, when the temperature of the battery module is too high, the temperature guide plate conducts the heat of the battery module to the outside and cools the battery module, and when the temperature of the battery module is too low, the temperature guide plate conducts the heat of the outside to the battery module and heats the battery module to restore the reasonable temperature; the process of heat conduction of the heat conduction plate has certain directionality, so that the temperature of partial positions of the heat conduction plate is too high or too low, the battery module at the corresponding position is heated or the heat dissipation effect is reduced, and the environmental temperature uniformity of the battery module during working is reduced, therefore, the airflow generation module is arranged, airflow flowing from a high-temperature position to a low-temperature position is generated in the box body, the heat at the high-temperature position is brought to the low-temperature position through the flowing of the airflow, so that the temperature at each position in the box body is more consistent, the environmental temperature uniformity of the battery module during working is improved, the consistency of battery cells in the battery module is further improved, the internal resistance and the charge-discharge performance of the battery cells are optimized, the cycle life of the battery cells is prolonged, furthermore, the airflow generated by the airflow generation module can also directly increase the heat dissipation efficiency of the battery module at the high-temperature position, and the temperature difference of the battery module at different positions is further reduced; in addition, the induction control module is also arranged, one of the functions of the induction control module is to acquire temperature difference information in the box body, namely, the temperature difference between different positions is calculated according to the temperature information of each position in the box body, the second function of the induction control module is to control the working state of the airflow generation module according to the temperature difference information, specifically, when the induction control module learns that the temperature difference between certain positions is too high, the airflow generation module is started to generate airflow flowing to a low-temperature position at a position corresponding to a high-temperature position until the temperature difference between the two positions is lower than a certain value, the temperature difference information can be conveniently acquired due to the arrangement of the induction control module, the temperature equalizing efficiency of the temperature equalizing system is improved through real-time control of the temperature difference information, compared with the scheme that the environmental temperature can not be effectively equalized when a battery module works in the related technology, the temperature equalizing system can equalize the environmental temperature while ensuring that a power battery works at a reasonable environmental temperature, the environment temperature uniformity of battery module during operation is effectively promoted, and then power battery's performance and life are effectively promoted.
In a possible implementation manner of the present application, the airflow generation module includes a plurality of fans, and the plurality of fans are disposed at different positions in the box body.
In a possible implementation manner of the present application, a heat conducting medium moving along a first direction is provided in the heat conducting plate, and the plurality of fans are respectively disposed on two sides of the heat conducting plate along the first direction.
In one possible implementation of the present application, the interior of the box is provided with an airflow channel.
In a possible implementation of this application, airflow channel extends along the first direction for the air current that the fan produced is unanimous with airflow channel's direction, guarantees the velocity of flow of air current, promotes samming efficiency.
In a possible implementation manner of the application, the induction control module comprises a plurality of temperature detection points, the temperature detection points are arranged at different positions in the box body, and the temperature detection points are used for collecting temperature data.
In a possible implementation manner of the application, the temperature detection points and the fans are fixed in a one-to-one correspondence mode, so that temperature data obtained by the temperature detection points are more accurate.
In a possible implementation manner of the application, the sensing control module further comprises a controller, the temperature detection point and the fan are electrically connected to the controller, and the controller is used for calculating temperature difference information according to temperature data and controlling the working state of the fan, namely starting and stopping of the fan, the air volume and the like.
In a second aspect, an embodiment of the present application provides a temperature equalization control method, including acquiring temperature difference information in a tank; and controlling an airflow generation module in the box body according to the temperature difference information so as to generate airflow flowing from the high-temperature position to the low-temperature position.
The temperature equalization control method that the embodiment of the application provided, through the difference in temperature information that obtains in the box, provide the basis for implementation of temperature equalization strategy, and according to the air current generation module in the difference in temperature information control box, the air current generation module produces the air current by high temperature position flow direction low temperature position, the heat with the high temperature position is taken to the low temperature position through the flow of air current, make everywhere temperature more unanimous in the box, thereby build the good operational environment of temperature equalization, in addition, the air current that the air current generation module produced also can directly increase the radiating efficiency of high temperature position, further reduce the difference in temperature of different positions in the box.
In a possible implementation manner of the application, in the step of controlling the airflow generation module in the box body according to the temperature difference information, when the temperature difference information is greater than or equal to a preset value, the airflow generation module is started.
In one possible implementation of the present application, the preset value ranges from 3 ℃ to 7 ℃.
In a possible implementation manner of the application, after the step of starting the airflow generation module, the temperature difference information is continuously acquired, the airflow generation module is closed when the temperature difference information is smaller than a preset value, and the airflow generation module is closed when the temperature difference is smaller, so that energy can be saved.
Drawings
Fig. 1 is a schematic structural diagram of a temperature equalization system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of fan distribution of a temperature equalization system provided in an embodiment of the present application;
fig. 3 is a schematic view of an internal structure of a temperature conduction plate of a temperature equalization system according to an embodiment of the present application;
fig. 4 is a flowchart of a temperature equalization control method according to an embodiment of the present application.
Reference numerals:
1-a box body; 2-a temperature conducting plate; 21-a media channel; 3, a fan; 4-an induction control module; 41-temperature probe point; 42-a controller; 5-an air flow channel; 6-an inflow conduit; 7-an outflow conduit; 8-battery module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.
In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.
In the embodiments of the present application, the terms "include", "include" or any other variations are intended to cover non-exclusive inclusions, so that a process, a method, an article, or an apparatus including a series of elements includes not only those elements but also other elements not explicitly listed, or further includes elements inherent to such a process, a method, an article, or an apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "such as" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The embodiment of the application provides a temperature equalizing system and a temperature equalizing control method, which can be used for equipment with requirements on environmental temperature, and provide a working environment with good temperature equalizing property for the equipment, such as a power battery of an automobile, the charge and discharge performance of the power battery can be influenced if the temperature is too low, so that the vehicle cannot be started, the user comfort is poor, meanwhile, the temperature difference between battery modules is also a key factor influencing the work of the power battery, and in the heating or cooling process, the temperature difference between the battery modules can be too large to cause each battery cell to work at different temperatures, so that the consistency of the battery cells is poor, the internal resistance, the charge and discharge performance and the cycle life of the battery cells are seriously influenced, and the performance and the service life of a battery pack are seriously influenced.
Referring to fig. 1 and 2, the temperature equalizing system provided in the embodiment of the present application includes a box 1, a temperature guide plate 2, an airflow generation module, and an induction control module 4, where the box 1 is used for accommodating a battery module 8; the temperature guide plate 2 is arranged on the battery module 8 in the box body 1 and is used for assisting the battery module 8 to exchange heat with the outside; the airflow generation module is arranged in the box body 1 and used for generating airflow flowing from a high-temperature position to a low-temperature position; the induction control module 4 is used for acquiring temperature difference information in the box body 1 and controlling the working state of the airflow generation module according to the temperature difference information.
It is specific, box 1 provides a stable operational environment for battery module 8, lead 2 auxiliary battery modules 8 of temperature board and heat up or dispel the heat, on this basis, induction control module 4 acquires the difference in temperature information in the box 1, and according to the operating condition of difference in temperature information control air current generation module, produce the air current of high temperature position flow direction low temperature position in box 1, the heat of high temperature position is taken to the low temperature position through the flow of air current, make the temperature more unanimous everywhere in the box 1, promote the environment temperature uniformity of battery module 8 during operation, and then promote the uniformity of electric core in the battery module 8, optimize the internal resistance of electric core, charge and discharge performance promotes its cycle life.
In addition, the airflow generated by the airflow generation module can also directly increase the heat dissipation efficiency of the battery module 8 at the high-temperature position, and further reduce the temperature difference between different positions of the battery module 8. Compare with the scheme that can't effectively equalize battery module 8 during operation ambient temperature among the correlation technique, the temperature equalization system of this application can be in when reasonable ambient temperature when guaranteeing power battery during operation, effectively promotes the environment temperature equalization of battery module 8 during operation, and then effectively promotes power battery's performance and life.
It should be noted that the box 1 for accommodating the battery module 8 provides a foundation for establishing the temperature equalization system while avoiding the influence of the external environment on the battery module 8, and therefore, the box 1 should have certain sealing performance and heat insulation capability.
Exemplarily, in order to improve the sealing performance of the box body 1, in an embodiment of the present application, the box body 1 adopts an integrally formed structure, and the use of an assembled structure is reduced, so that gaps that can connect the inside and the outside of the box body 1 are reduced; or, a sealing element, such as a sealing ring, a sealing rubber strip, a sealing filler, etc., is arranged at the opening of the box body 1.
Correspondingly, in order to promote the thermal-insulated ability of box 1, in an embodiment of this application, box 1 adopts multilayer structure to make, and interior nexine is made by sheet metal, can the vacuum setting between the interior nexine, or add the insulating layer of being made by thermal insulation material, for example foaming board, cellucotton, aerogel etc..
In addition, the battery module 8 may be mounted in the case 1 in various ways, for example: clamping, fastening and the like, for example, in an embodiment of the present application, a plurality of support columns are arranged in the box body 1, a placement groove is formed between the plurality of support columns, and the battery module 8 is fixed in the box body 1 by clamping in the placement groove; in another embodiment of the present application, a plurality of connection holes are formed in the battery module 8, a screw fixing portion is formed in a position corresponding to the connection holes in the case 1, and the battery module 8 is fixed to the screw fixing portion by a fastening member such as a bolt.
Correspondingly, the temperature guide plate 2 may also be connected in the case 1 in a similar manner to achieve mutual positioning of the temperature guide plate 2 and the battery module 8, it should be noted that, in order to improve the heat conduction efficiency between the temperature guide plate 2 and the battery module 8, the temperature guide plate 2 should be disposed closely to the battery module 8, or a heat conduction filler, such as heat conduction silicone grease, a silica gel gasket, and heat conduction graphite, should be filled between the joint surfaces of the temperature guide plate 2 and the battery module 8.
It should be noted that the heat conducting plate 2 is used as an object for exchanging heat between the auxiliary battery module 8 and the outside, and can directly realize heat transfer by itself, and at this time, the heat conducting plate 2 should be made of a material with a high thermal conductivity, such as alumina ceramic, metal copper, and the like.
On this basis, exemplarily, the temperature guide plate 2 comprises a first end attached to the battery module 8 and a second end extending out of the box body 1, when the temperature of the battery module 8 is too high, heat is transferred from the first end of the temperature guide plate 2 to the second end, and the second end dissipates heat in a mode of air cooling and the like, so that the temperature of the battery module 8 is reduced; when battery module 8 temperature was crossed lowly, the second end of heat conduction board 2, the heat was transmitted to first end by the second end of heat conduction board 2 to through first end with battery module 8 heating, realize battery module 8's intensification.
In addition, the heat transfer can also be accelerated by arranging a flowing heat conducting medium inside the temperature guide plate 2, referring to fig. 3, in an embodiment of the present application, a medium channel 21 is arranged inside the temperature guide plate 2, two ends of the medium channel 21 are connected to the outside of the box body 1, the heat conducting medium flows in from one end of the medium channel 21, and the other end flows out, and the heat conducting medium flows to realize the heat transfer quickly.
Specifically, when the temperature of the battery module 8 is too high, the first end of the medium channel 21 flows into the heat-conducting medium with a lower temperature, the heat of the battery module 8 is gradually absorbed in the flowing process of the heat-conducting medium, and the heat is taken out to the outside by the second end of the medium channel 21, so that the temperature reduction of the battery module 8 is realized; when battery module 8's temperature was crossed lowly, the first end inflow heat-conducting medium that the temperature is higher of medium passageway 21, and the heat transfer to battery module 8 with self in the heat-conducting medium flow process gradually realizes battery module 8's intensification.
Wherein, the heat-conducting medium can be water, fluorinated liquid, cooling liquid and the like. The medium channel 21 is provided in various forms, referring to fig. 3, in an embodiment of the present application, two ends of the medium channel 21 are respectively disposed on opposite sides of the temperature guiding plate 2 along the first direction, and the medium channel 21 extends in an S shape along the first direction inside the temperature guiding plate 2, that is, the temperature guiding plate 2 has a heat conducting medium moving along the first direction, so as to implement full coverage of the temperature guiding plate 2 by the heat conducting medium.
In addition, can also set up a plurality of temperature conduction boards 2 to correspond a plurality of battery module 8, specifically, refer to fig. 1 and fig. 2, a plurality of temperature conduction boards 2 are parallel to each other and set up, the both ends of medium passageway 21 set up respectively in the opposite side of temperature conduction board 2, and the both sides that correspond medium passageway 21 tip in the box 1 all are equipped with the pipeline, the pipeline is rather than a plurality of medium passageway 21 end connection that are close to, one of them pipeline is as inflow pipeline 6, regard as outflow pipeline 7 in addition, heat-conducting medium gets into temperature conduction board 2 by inflow pipeline 6, flow out temperature conduction board 2 by outflow pipeline 7.
It should be noted that a circulation temperature adjustment module is further disposed outside the box body 1, and specifically, the circulation temperature adjustment module may include a circulation pipe, a pump body, a heater, a radiator, and the like. The circulating pipeline of the circulating temperature adjusting module is communicated with two ends of the medium channel 21, the heat-conducting medium circularly flows in the circulating pipeline and the medium channel 21 through the pump body, the heater and the radiator are arranged along the circulating pipeline, and when the temperature of the battery module 8 is too low, the heater is started and the radiator is closed; when the temperature of the battery module 8 is too high, the radiator is started, and the heater is turned off.
It should be noted that, the process of heat conduction of the heat conducting plate 2 has a certain directionality, which may cause the temperature at a part of the position of the heat conducting plate 2 to be too high or too low, and the heating or heat dissipation effect on the battery module 8 at the corresponding position is reduced therewith, resulting in the deterioration of the temperature uniformity of the environment when the battery module 8 works, and therefore, an airflow generating module needs to be provided for generating an airflow flowing from a high-temperature position to a low-temperature position.
Specifically, the air flow can be generated by a fan 3, and referring to fig. 1 and 2, in an embodiment of the present application, the air flow generating module includes a plurality of fans 3, and the plurality of fans 3 are disposed at different positions in the box 1. The air current that produces through fan 3 takes the heat of high temperature position to the low temperature position, make in the box 1 everywhere the temperature more unanimous, promote the environment temperature uniformity of battery module 8 during operation, and then promote the uniformity of electric core in the battery module 8, optimize the internal resistance of electric core, charge-discharge performance and promote its cycle life, in addition, the air current that the module produced takes place also can directly increase the radiating efficiency of high temperature position battery module 8, further reduce the difference in temperature of the different positions of battery module 8.
Wherein, the overall arrangement mode of fan 3 in box 1 has the multiple, exemplarily, in an embodiment of this application, a plurality of fans 3 encircle the setting of 8 rounds of battery module, and the air-out direction of a plurality of fans 3 sets gradually, forms endless air current in box 1 to keep the temperature uniformity nature of box 1 internal environment.
Referring to fig. 1 and 2, in another embodiment of the present application, a plurality of fans 3 are disposed on both sides of the temperature guide plate 2 along a first direction. That is, the plurality of fans 3 are divided into two groups, one of which is disposed on the side of the inflow duct 6 and the other of which is disposed on the side of the outflow duct 7. When the temperature of the battery module 8 is too low, the temperature of the heat-conducting medium flowing through the high temperature in the medium channel 21 is higher, the heat-conducting medium releases heat when flowing through the medium channel 21, the temperature of the outflow pipeline 7 is lower, the fan 3 corresponding to one side of the inflow pipeline 6 is started, airflow facing one side of the outflow pipeline 7 is generated, and the temperature difference of the two sides of the heat-conducting plate 2 is balanced; when battery module 8 high temperature, flow through microthermal heat-conducting medium in the medium passageway 21, the temperature of inflow pipeline 6 one side is lower, and heat-conducting medium absorbs when flowing through medium passageway 21, and the temperature of outflow pipeline 7 one side is higher, starts the fan 3 that outflow pipeline 7 one side corresponds, produces towards the air current of inflow pipeline 6 one side, balances the difference in temperature of leading 2 both sides of warm board.
It should be noted that the fan 3 can be a directional fan 3, or a reversing fan 3, and the corresponding fan 3 can be selected according to the layout of the fan 3 in the box body 1, when the reversing fan 3 is arranged, the fans 3 on the two sides of the temperature guide plate 2 can be started simultaneously, and the direction of the generated air flow is consistent only by ensuring that the generated air flow flows from a high temperature position to a low temperature position
In order to facilitate the air flow generated by the air flow generating module to flow inside the box body 1, referring to fig. 1 and 2, an air flow channel 5 is provided inside the box body 1, and illustratively, in one embodiment of the present application, the air flow channel 5 is a groove-shaped structure provided on the inner wall of the box body 1; in another embodiment of the present application, the battery module 8 is spaced apart from the inner wall of the case 1, and the circumferential side of the battery module 8 forms the annular air flow path 5.
Referring to fig. 1 and 2, in an embodiment of the present application, the plurality of battery modules 8 are distributed at intervals, the airflow channels 5 are reserved between the battery modules 8, and each battery module 8 corresponds to a plurality of airflow channels 5, so that the temperature equalization efficiency is higher. When setting up a plurality of temperature conduction boards 2, fan 3 can set up in airflow channel 5's both ends, and required fan 3 quantity is still less, and the cost is lower also, refer to fig. 1, in another kind of embodiment of this application, every both sides of temperature conduction board 2 all correspond a fan 3, and the samming efficiency is higher.
Wherein the air flow channel 5 may be arranged in a ring shape, and referring to fig. 1 and 2, the air flow channel 5 extends along a first direction, so that the air flow generated by the fan 3 is in the same direction as the air flow channel 5.
In order to promote the temperature equalizing efficiency of the temperature equalizing system of the application, the induction control module 4 is used for acquiring temperature difference information in the box body 1 and controlling the working state of the airflow generation module according to the temperature difference information. Specifically, when knowing that the difference in temperature is too high between some positions as sensing control module 4, just start the air current and take place the module, produce the air current that flows to the low temperature position in high temperature position department, until the difference in temperature between two positions is less than certain numerical value, owing to set up sensing control module 4, can conveniently learn the difference in temperature information to through difference in temperature information real time control, improved the samming efficiency of this application samming system.
In addition, the induction control module 4 can also control the circulating temperature adjusting module, and specifically, when the temperature of the battery module 8 is too low, a heater in the circulating temperature adjusting module is started to heat the heat-conducting medium; when the temperature of the battery module 8 is too low, the radiator in the circulating temperature adjusting module is started to cool the heat-conducting medium, so that the temperature of the battery module 8 can be effectively increased or decreased.
Wherein, the induction control module 4 includes a plurality of temperature probe points 41, and a plurality of temperature probe points 41 set up the different positions in box 1, and temperature probe point 41 is used for the temperature data of real-time acquisition, can fix a position the radiating relatively poor module position under the condition of not opening the battery package upper cover, provide the support for realizing the samming function from the tactics.
Preferably, the temperature detecting points 41 are temperature sensors, the temperature detecting points 41 can be arranged at different positions in the box body 1 according to actual conditions, and preferably, the temperature detecting points 41 and the fans 3 are fixed in a one-to-one correspondence manner, that is, one temperature detecting point 41 is fixed on each fan 3 correspondingly.
In addition, the sensing control module 4 further includes a controller 42, the temperature detection point 41 and the fan 3 are electrically connected to the controller 42, the controller 42 is configured to calculate temperature difference information according to the temperature data and control the operating state of the fan 3, correspondingly, the heater and the radiator of the circulating temperature adjustment module are also electrically connected to the controller 42, and the controller 42 controls the operating state of the heater and the radiator according to the temperature data.
On this basis, referring to fig. 4, the temperature equalization control method provided in the embodiment of the present application includes:
s1: acquiring temperature difference information in the box body 1;
s2: and controlling an airflow generation module in the box body 1 according to the temperature difference information so as to generate airflow flowing from a high-temperature position to a low-temperature position.
The control method can be used for the temperature equalizing system, provides a basis for the implementation of a temperature equalizing strategy by acquiring temperature difference information in the box body 1, and controls the airflow generation module in the box body 1 according to the temperature difference information, and the airflow generation module generates airflow to improve the temperature equalizing property of the environment in the box body 1.
In addition, in the module step takes place according to the air current in the difference in temperature information control box 1, when difference in temperature information more than or equal to default, start the air current and take place the module, produce the air current by high temperature position flow direction low temperature position, the heat with high temperature position is taken to low temperature position through the flow of air current, make everywhere temperature more unanimous in the box 1, thereby build the good operational environment of temperature uniformity, furthermore, the air current that the module produced takes place also can directly increase the radiating efficiency of high temperature position, further reduce the difference in temperature of different positions in the box 1.
Wherein the preset value range is 3-7 ℃, and the preferable preset value range can be 3 ℃, 5 ℃ and 7 ℃.
In order to save energy, referring to fig. 4, after the step of starting the airflow generation module, it is further necessary to:
s3: and continuously acquiring temperature difference information, and closing the airflow generation module when the temperature difference information is smaller than a preset value. When the temperature difference is too large, the airflow generation module is started, and when the temperature difference is smaller, the airflow generation module is closed to save energy, and when the temperature difference needs to be explained, the preset value corresponding to the closed airflow generation module is smaller than the preset value for starting the airflow generation module, and a certain difference value exists between the preset value and the preset value, so that frequent starting and stopping of the airflow generation module are avoided.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments. The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all the equivalent structures or equivalent processes that can be directly or indirectly applied to other related technical fields by using the contents of the specification and the drawings of the present application are also included in the scope of the present application.

Claims (12)

1. A temperature equalization system, comprising:
the box body is used for placing the battery module;
the temperature guide plate is arranged on the battery module in the box body and is used for assisting the battery module to exchange heat with the outside;
the airflow generating module is arranged in the box body and used for generating airflow flowing from a high-temperature position to a low-temperature position;
and the induction control module is used for acquiring the temperature difference information in the box body and controlling the working state of the airflow generation module according to the temperature difference information.
2. The temperature equalizing system of claim 1, wherein the airflow generating module comprises a plurality of fans disposed at different locations within the box.
3. The temperature equalizing system according to claim 2, wherein the temperature guide plate has a heat transfer medium therein, the heat transfer medium moving in a first direction, and the plurality of fans are disposed on two sides of the temperature guide plate along the first direction.
4. The temperature equalizing system of claim 3, wherein an airflow channel is provided inside the case.
5. The temperature equalization system of claim 4, wherein the airflow channel extends in the first direction.
6. The temperature equalizing system of claim 2, wherein the sensing control module comprises a plurality of temperature detection points, the plurality of temperature detection points are arranged at different positions in the box body, and the temperature detection points are used for collecting temperature data.
7. The temperature equalizing system of claim 6, wherein the temperature probes are fixed in a one-to-one correspondence with the fans.
8. The temperature equalizing system of claim 7, wherein the sensing control module further comprises a controller, the temperature detection point and the fan are electrically coupled to the controller, and the controller is configured to calculate temperature difference information according to the temperature data and control a working state of the fan.
9. A temperature equalization control method is characterized by comprising the following steps:
acquiring temperature difference information in the box body;
and controlling an airflow generation module in the box body according to the temperature difference information so as to generate airflow flowing from a high-temperature position to a low-temperature position.
10. The temperature equalization control method according to claim 9, wherein in the step of controlling the airflow generation module in the box according to the temperature difference information, the airflow generation module is started when the temperature difference information is greater than or equal to a preset value.
11. The temperature-equalizing control method according to claim 10, wherein the preset value ranges from 3 ℃ to 7 ℃.
12. The temperature equalization control method according to claim 11, wherein the temperature difference information is continuously obtained after the step of starting the airflow generation module, and the airflow generation module is turned off when the temperature difference information is smaller than a preset value.
CN202210261748.1A 2022-03-16 2022-03-16 Temperature equalizing system and temperature equalizing control method Pending CN114614146A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116470187A (en) * 2023-05-06 2023-07-21 珠海科创储能科技有限公司 Battery cell temperature equalizing system and method suitable for immersed liquid cooling energy storage system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106711544A (en) * 2017-01-11 2017-05-24 深圳市沃特玛电池有限公司 Battery box cooling device
CN212934722U (en) * 2020-08-10 2021-04-09 山东泰一新能源股份有限公司 Lithium battery module with temperature control capability
CN113937385A (en) * 2021-08-31 2022-01-14 岚图汽车科技有限公司 Battery system, control method and control device of battery system and vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106711544A (en) * 2017-01-11 2017-05-24 深圳市沃特玛电池有限公司 Battery box cooling device
CN212934722U (en) * 2020-08-10 2021-04-09 山东泰一新能源股份有限公司 Lithium battery module with temperature control capability
CN113937385A (en) * 2021-08-31 2022-01-14 岚图汽车科技有限公司 Battery system, control method and control device of battery system and vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李罡;黄向东;符兴锋;杨勇;: "液冷动力电池低温加热系统设计研究", 湖南大学学报(自然科学版), no. 02, pages 26 - 33 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116470187A (en) * 2023-05-06 2023-07-21 珠海科创储能科技有限公司 Battery cell temperature equalizing system and method suitable for immersed liquid cooling energy storage system

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