CN115566316A - Battery module and temperature control method thereof - Google Patents

Battery module and temperature control method thereof Download PDF

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Publication number
CN115566316A
CN115566316A CN202211283836.8A CN202211283836A CN115566316A CN 115566316 A CN115566316 A CN 115566316A CN 202211283836 A CN202211283836 A CN 202211283836A CN 115566316 A CN115566316 A CN 115566316A
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CN
China
Prior art keywords
cooling
cavity
liquid
air
sub
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CN202211283836.8A
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Chinese (zh)
Inventor
李德胜
冯守旺
刘博�
梅若愚
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Chongqing Chu'an Technology Innovation Center Co ltd
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Chongqing Chu'an Technology Innovation Center Co ltd
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Priority to CN202211283836.8A priority Critical patent/CN115566316A/en
Publication of CN115566316A publication Critical patent/CN115566316A/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
    • H01M10/60—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
    • H01M10/65—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
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a battery module and a temperature control method, wherein the battery module comprises a shell, an electric core assembly and a cooling circulation system; an accommodating cavity is formed in the shell, a partition plate is arranged in the accommodating cavity and divides the accommodating cavity into a first sub-cavity and a second sub-cavity; the battery core assembly is arranged in the accommodating cavity and comprises a plurality of battery cores, and the battery cores are distributed in the first sub-cavity and the second sub-cavity; cooling circulation system includes liquid cooling return circuit and air-cooled return circuit, be equipped with inlet and liquid outlet on the liquid cooling return circuit, the inlet forms first minute chamber, the liquid outlet forms and divides the chamber at the second, be equipped with air intake and air outlet on the air-cooled return circuit, the air intake forms the second divides the chamber, the air outlet forms first minute chamber. The invention aims to solve the problem that the conventional cooling system cools the battery module unevenly.

Description

Battery module and temperature control method thereof
Technical Field
The invention relates to the technical field of batteries, in particular to a battery module and a temperature control method thereof.
Background
Temperature factors are important factors affecting battery performance and life; in the process of charging and discharging of the battery module, heat is inevitably generated, so in the field of batteries, a liquid cooling plate is usually arranged in the battery module to improve the heat dissipation efficiency of the battery, a plurality of electric core groups are usually arranged in the battery module, and each electric core group consists of a plurality of electric cores; the temperature control of cooling is mainly carried out to the electric core group through the cold group of liquid to prior art, and the general water supply temperature of liquid cooling unit is 15120 ℃, and the entry temperature is low, and electric core generally sets for carrying out the intelligent control cooling at 30 ℃ at the operation in-process, and the problem of existence is: the temperature of the battery cells at the inlet end and the outlet end of the cooling liquid is different, so that the temperature difference between the battery cells is increased, the performance consistency of the battery cells is influenced, and the service life of the battery cells is influenced.
Disclosure of Invention
The invention mainly aims to provide a battery module and a temperature control method, and aims to solve the problem that the conventional cooling system is not uniform in cooling the battery module.
In order to achieve the above object, the present invention provides a battery module, including:
the device comprises a shell, a first cavity and a second cavity, wherein an accommodating cavity is formed in the shell, and a partition plate is arranged in the accommodating cavity and divides the accommodating cavity into the first cavity and the second cavity;
the battery core assembly is arranged in the accommodating cavity and comprises a plurality of battery cores which are distributed in the first sub-cavity and the second sub-cavity; and the number of the first and second groups,
cooling circulation system, including liquid cooling return circuit and air-cooled return circuit, be equipped with inlet and liquid outlet on the liquid cooling return circuit, the inlet forms first minute chamber, the liquid outlet forms and divides the chamber at the second, be equipped with air intake and air outlet on the air-cooled return circuit, the air intake forms the second divides the chamber, the air outlet forms first minute chamber.
Optionally, a liquid cooling plate is arranged in the shell, the liquid cooling plate is located between the shell and the electric core assembly, two channels are formed in the liquid cooling plate, one ends of the two channels are communicated, the other end of one channel corresponds to the first sub-cavity, the other end of the other channel corresponds to the second sub-cavity, and the liquid inlet and the liquid outlet are respectively formed at the ends of the two channels which are not communicated;
the liquid cooling loop includes two of the channels.
Optionally, a heat conducting glue is further arranged between the liquid cooling plate and the electric core assembly.
Optionally, an insulating plate is further disposed between the heat conducting glue and the electric core assembly.
Optionally, a cooling water tank and a circulating water pump are further arranged on the liquid cooling loop;
the cooling water tank is used for containing cooling liquid, an inlet and an outlet are formed on the cooling water tank, and the outlet is connected to the liquid outlet;
the circulating water pump comprises a liquid inlet end and a liquid outlet end, the liquid inlet end is connected to the outlet, and the liquid outlet end is connected to the liquid inlet.
Optionally, the air-cooling circuit includes an air-cooling channel, the air-cooling channel includes a first channel and a second channel, the first channel is connected to the second channel, the first channel is disposed in the second sub-cavity, the second channel is disposed in the first sub-cavity, the air inlet is formed on the first channel, and the air outlet is formed on the second channel; and/or the presence of a gas in the atmosphere,
and a cooling fan is arranged on the air cooling loop, the cooling fan is arranged in the accommodating cavity and is positioned on the partition plate, and an air outlet of the cooling fan faces the second sub-cavity.
Optionally, the battery module further includes:
the control module is arranged on the shell and is used for electrically connecting the cooling fan and the electric core assembly; and the number of the first and second groups,
and the temperature sensor is arranged in the shell and used for monitoring the temperature of the electric core assembly, and the temperature sensor is electrically connected with the control module.
Optionally, the battery module further includes an auxiliary heat dissipation device, the auxiliary heat dissipation device includes a plurality of heat dissipation fins, and the plurality of heat dissipation fins are disposed outside the housing at intervals.
In addition, the invention also provides a temperature control method based on the battery module, wherein a cooling fan is arranged on the air cooling loop, the cooling fan is arranged in the accommodating cavity and is positioned on the partition plate, and an air outlet of the cooling fan is arranged towards the second sub-cavity;
the temperature control method comprises the following steps:
acquiring the actual temperature of the electric core assembly;
calculating the temperature difference value between the actual temperature and the preset temperature;
and determining the control strategy of the cooling fan according to the temperature difference.
Optionally, the step of determining the cooling fan control strategy according to the temperature difference comprises:
when the temperature difference is higher than a preset difference, starting the cooling fan;
and when the temperature difference is lower than a preset difference, the cooling fan is turned off.
In the technical scheme of the invention, the accommodating cavity is divided into a first sub-cavity and a second sub-cavity by the partition board, the purpose is to adopt different cooling means for the battery cores in the first sub-cavity and the second sub-cavity, in the normal cooling process, because the cooling circulation system continuously absorbs heat in the cooling process, the front and back cooling temperature difference is overlarge (namely the front cooling effect is better, and the back cooling effect is poorer), in order to ensure the cooling efficiency of the battery module and reduce the cooling temperature difference, the cooling circulation system is provided with an air cooling loop and a liquid cooling loop for cooling simultaneously, in the cooling process, a liquid inlet of the liquid cooling loop is formed in the first sub-cavity, a liquid outlet of the liquid cooling loop is formed in the second sub-cavity, a cooling medium in the air cooling loop flows from the first sub-cavity to the second sub-cavity to cool the battery core assembly, an air inlet of the air cooling loop is formed in the second sub-cavity, an air outlet of the liquid cooling loop is formed in the first sub-cavity, the cooling loop and the air cooling loop move from the two different sub-cavities to control the temperature difference of the battery module, so that the battery module is reduced in the temperature difference in the battery module, and the battery module, thereby the battery module, and the battery module, and the battery module can be prevented from being reduced in the temperature difference in the battery module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic diagram of the air cooling circuit of FIG. 1;
fig. 4 is a schematic view of the pipe of fig. 1.
The reference numbers illustrate:
reference numerals Name (R) Reference numerals Name (R)
100 Battery module 322 Air outlet
1 Shell body 32a Liquid cooling plate
11 Partition board 321a Channel
12 First sub-chamber 3211a First pipeline
13 Second sub-chamber 3212a Second pipeline
2 Electricity core subassembly 33 Cooling downFan with cooling device
3 Cooling circulation system 34 First channel
31 Liquid cooling loop 35 The second channel
311 Liquid inlet 4 Heat-conducting glue
312 Liquid outlet 5 Insulating board
32 Air cooling loop 6 Cooling water tank
321 Air inlet 7 Circulating water pump
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one of the feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Temperature factors are important factors affecting battery performance and life; in the process of charging and discharging of the battery module, heat is inevitably generated, so in the field of batteries, a liquid cooling plate is usually arranged in the battery module to improve the heat dissipation efficiency of the battery, a plurality of electric core groups are usually arranged in the battery module, and each electric core group consists of a plurality of electric cores; the temperature control of cooling is mainly carried out to the electric core group through the cold group of liquid to prior art, and the general water supply temperature of liquid cooling unit is 15120 ℃, and the entry temperature is low, and electric core generally sets for carrying out the intelligent control cooling at 30 ℃ at the operation in-process, and the problem of existence is: the temperature of the battery cells at the inlet end and the outlet end of the cooling liquid is different, so that the temperature difference between the battery cells is increased, the performance consistency of the battery cells is influenced, and the service life of the battery cells is influenced.
In view of the above, fig. 1 to 4 illustrate an embodiment of a battery module according to the present invention, and the battery module will be mainly described with reference to the accompanying drawings.
Referring to fig. 1, the battery module 100 includes a housing 1, a core assembly 2, and a cooling circulation system 3; a containing cavity is formed in the shell 1, a partition plate 11 is arranged in the containing cavity, and the containing cavity is divided into a first sub-cavity 12 and a second sub-cavity 13; the electric core assembly 2 is arranged in the accommodating cavity, and the electric core assembly 2 comprises a plurality of electric cores which are distributed in the first sub-cavity 12 and the second sub-cavity 13; cooling circulation system 3 includes liquid cooling return circuit 31 and air-cooled return circuit 32, be equipped with inlet 311 and liquid outlet 312 on the liquid cooling return circuit 31, inlet 311 forms first subchamber 12, liquid outlet 312 forms at second subchamber 13, be equipped with air intake 321 and air outlet 322 on the air-cooled return circuit 32, air intake 321 forms second subchamber 13, air outlet 322 forms first subchamber 12.
In the technical solution of the present invention, the accommodating cavity is divided into the first sub-cavity 12 and the second sub-cavity 13 by the partition board 11, so as to adopt different cooling means for the battery cells in the first sub-cavity 12 and the second sub-cavity 13, during a normal cooling process, because the cooling circulation system 3 absorbs heat continuously during a cooling process, a front-back cooling temperature difference is too large (that is, a front cooling effect is good, and a back cooling effect is poor), in order to ensure a cooling efficiency of the battery module 100 and reduce the cooling temperature difference, the cooling circulation system 3 is provided with the air cooling loop 32 and the liquid cooling loop 31 for cooling at the same time, during the cooling process, the liquid inlet 311 of the liquid cooling loop 31 is formed in the first sub-cavity 12, the liquid outlet 312 is formed in the second sub-cavity 13, a cooling medium in the liquid cooling loop 31 flows from the first sub-cavity 12 to the second sub-cavity 13 to cool the battery core assembly 2, the air inlet 321 of the air cooling loop 32 is formed in the second sub-cavity 13, the air outlet 322 forms the first sub-cavity 12, a cooling loop 32 flows from the second sub-cavity 13 to cool the battery module, the air cooling loop 32, thereby preventing the battery module 100 from being shifted from the working temperature difference between the battery modules 100, and preventing the battery modules 100 from being reduced, and preventing the battery modules 100 from being uniform.
It should be noted that, in the cooling process, the cooling medium continuously absorbs the heat energy generated by the cooled medium, so that the temperature of the cooling medium is continuously raised (i.e. the cooling is performed by a heat exchange manner), so that the heat energy absorbed by the cooling medium in the initial stage is higher, and in the subsequent cooling process, as the absorbed heat energy is more and more, the temperature of the cooling medium is also higher and more, and the absorbed heat energy is less and less, so that the phenomenon of uneven cooling can occur.
Further, referring to fig. 1, fig. 2 and fig. 4, a liquid cooling plate 32a is disposed in the housing 1, the liquid cooling plate 32a is located between the housing 1 and the electric core assembly 2, two passages 321a are formed in the liquid cooling plate 32a, one ends of the two passages 321a are disposed in a communicating manner, the other end of one passage 321a corresponds to the first sub-cavity 12, the other end of the other passage 321a corresponds to the second sub-cavity 13, and the liquid inlet 311 and the liquid outlet 312 are respectively formed at the ends of the two passages 321a that are not communicated; the liquid cooling circuit 31 includes two of the passages 321a. In this embodiment, the battery module 100 further includes a liquid cooling plate 32a, the liquid cooling plate 32a is disposed between the housing 1 and the electric core assembly 2, and is configured to cool the electric core assembly 2, in the cooling process, the cooling medium flows into the channel 321a located in the first sub-cavity 12 from the liquid inlet 311 to cool the electric core in the first sub-cavity 12, and then the cooling medium flows into the channel 321a located in the second sub-cavity 13 to cool the electric core in the second sub-cavity 13, and then flows out from the liquid outlet 312 to complete cooling.
It should be noted that the specific shape of the passage 321a is not limited, and the passage 321a may be arranged according to the specific type of the battery module 100, for example, referring to fig. 4, each of the passages 321a includes a plurality of first pipes 3211a and a plurality of second pipes 3212a, the plurality of first pipes 3211a are arranged at intervals along the first direction, each of the second pipes 3212a is arranged in an arc shape, and each of the second pipes 3212a is located between two first pipes 3211a, and is used for connecting two adjacent first pipes 3211a to form a cooling loop.
Further, please refer to fig. 2, a heat conductive adhesive 4 is further disposed between the liquid cooling plate 32a and the electric core assembly 2. The heat conducting glue 4 is used for accelerating the transfer of heat energy, and transferring the heat energy generated by the electric core assembly 2 to the liquid cooling plate 32a as much as possible, so that the cooling efficiency is improved.
Furthermore, it should be noted that if the cooling medium in the liquid-cooling plate 32a leaks, the cooling medium flows into the electric core assembly 2, or the electric core assembly 2 is in contact with the cooling medium due to a leakage phenomenon caused by a special reason, which may cause the battery module 100 to be damaged, so in order to avoid the above situation, in this embodiment, referring to fig. 2, an insulating plate 5 is further disposed between the heat conducting adhesive 4 and the electric core assembly 2, and the insulating plate 5 is used for isolating the electric core assembly 2 from the liquid-cooling plate 32a, so as to improve the safety performance of the battery module 100.
In one embodiment, a cooling water tank 6 and a circulating water pump 7 are further arranged on the liquid cooling loop 31; the cooling water tank 6 is used for containing cooling liquid, and an inlet and an outlet are formed on the cooling water tank 6, and the outlet is connected to the liquid outlet 312; the circulating water pump 7 comprises a liquid inlet end and a liquid outlet end, the liquid inlet end is connected to the outlet, and the liquid outlet end is connected to the liquid inlet 311. Specifically, the cooling water tank 6 is used for recovering the cooling liquid absorbing heat, the cooling liquid is cooled in the cooling water tank 6, then the circulating water pump 7 is used for pumping out the cooling liquid after cooling is finished, the cooling liquid is sent into the cooling plate, cooling is continued, and circulating cooling can be achieved through the arrangement.
Referring to fig. 3 and 4, the air-cooling circuit 32 includes an air-cooling passage 321a, the air-cooling passage 321a includes a first passage 34 and a second passage 35, the first passage 34 is connected to the second passage 35, the first passage 34 is disposed in the second sub-chamber 13, the second passage 35 is disposed in the first sub-chamber 12, the air inlet 321 is formed on the first passage 34, and the air outlet 322 is formed on the second passage 35; in the actual installation process, when the electric core assembly 2 is installed in the housing 1, a gap exists between the electric core assembly 2 and the housing 1 (namely, the housing 1 is only used for fixedly wrapping the electric core assembly 2 and is used for protecting the electric core assembly 2); therefore, in this embodiment, the electric core assembly 2 is respectively installed in the first sub-cavity 12 and the second sub-cavity 13, and the first channel 34 and the second channel 35 are gaps between the electric core assembly 2 and the first sub-cavity 12 and the second sub-cavity 13, so that the arrangement is adopted, an additional air duct is not required, and the air cooling medium is directly contacted with the electric core assembly 2, so that the cooling effect is better.
Further, in this embodiment, the partition 11 is disposed between the accommodating cavities, and divides the housing 1 into a first sub-cavity 12 and a second sub-cavity 13 which are equal to each other, and two ends of the first sub-cavity 12 and two ends of the second sub-cavity 13 are communicated; meanwhile, a cooling fan 33 is arranged on the air cooling loop 32, the cooling fan 33 is arranged in the accommodating cavity and located on the partition plate 11, and an air outlet 322 of the cooling fan 33 faces the second sub-cavity 13. In this way, the cooling fan 33 blows the air-cooling medium into the first passage 34 (the gap between the cell and the second sub-chamber 13) to cool the cell in the second region, and then flows into the second passage 35 (the gap between the cell and the first sub-chamber 12) to cool the cell in the first region again.
It should be noted that the cooling starting area of the liquid cooling loop 31 is the first sub-chamber 12, the cooling starting area of the air cooling loop 32 is the second sub-chamber 13, and the two cooling loops are cooled from different areas simultaneously, so as to avoid uneven cooling.
Further, the battery module 100 further includes a control module and a temperature sensor; the control module is arranged on the shell 1 and is used for electrically connecting the cooling fan 33 and the electric core assembly 2; temperature sensor locates in the casing 1 for the control the temperature of electric core subassembly 2, temperature sensor with control module group electric connection. It should be noted that how many moments of the heat energy that battery module 100 produced at the in-process of work are different, consequently in order to reduce the consumption of the energy, in this embodiment, only when battery module 100's temperature is too high, air-cooled circuit 32 just can work, temperature sensor locates in the casing 1, when the temperature of battery module group 2 is too high, temperature sensor can feed back the temperature value to control module, control module group basis the temperature control of temperature sensor feedback air-cooled circuit 32 work carries out auxiliary heat dissipation, works as after the temperature of battery module group 2 falls, control module group control air-cooled circuit 32 stop work, so set up, can reduce the consumption of the energy, also can not influence the cooling of battery module 100.
Further, in order to improve the heat dissipation efficiency, the battery module 100 further includes an auxiliary heat dissipation device, and the auxiliary heat dissipation device includes a plurality of heat dissipation fins, and the plurality of heat dissipation fins are disposed outside the housing 1 at intervals.
In addition, the present invention further provides a temperature control method for the battery module 100, wherein the air-cooled circuit 32 is provided with a cooling fan 33, the cooling fan 33 is disposed in the accommodating cavity and located on the partition 11, and an air outlet 322 of the cooling fan 33 is disposed toward the second sub-cavity 13;
step S10, the temperature control method comprises the following steps:
s20, acquiring the actual temperature of the electric core assembly 2;
s30, calculating a temperature difference value between the actual temperature and a preset temperature;
and S40, determining a control strategy of the cooling fan 33 according to the temperature difference.
In this embodiment, when the battery module 100 is in operation, the temperature sensor obtains the temperature of the battery pack assembly 2, obtains the actual temperature, and will the actual temperature value is transmitted to the control module, the control module will the actual temperature with the preset temperature is compared, obtains the temperature difference, then selects to open or close according to the temperature difference the cooling fan 33, it is right to carry out the auxiliary heat dissipation for the battery module 100.
Further, the step S40 further includes the steps of:
step S401, when the temperature difference is higher than a preset difference, the cooling fan 33 is started;
and step S402, when the temperature difference is lower than a preset difference, closing the cooling fan 33.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A battery module, comprising:
the device comprises a shell, a first cavity and a second cavity, wherein an accommodating cavity is formed in the shell, and a partition plate is arranged in the accommodating cavity and divides the accommodating cavity into the first cavity and the second cavity;
the battery core assembly is arranged in the accommodating cavity and comprises a plurality of battery cores, and the battery cores are distributed in the first sub-cavity and the second sub-cavity; and the number of the first and second groups,
cooling circulation system, including liquid cooling return circuit and air-cooled return circuit, be equipped with inlet and liquid outlet on the liquid cooling return circuit, the inlet forms first minute chamber, the liquid outlet forms and divides the chamber at the second, be equipped with air intake and air outlet on the air-cooled return circuit, the air intake forms the second divides the chamber, the air outlet forms first minute chamber.
2. The battery module according to claim 1, wherein a liquid cooling plate is disposed in the housing, the liquid cooling plate is located between the housing and the cell assembly, two channels are formed in the liquid cooling plate, one ends of the two channels are connected, the other end of one channel corresponds to the first sub-cavity, the other end of the other channel corresponds to the second sub-cavity, and the liquid inlet and the liquid outlet are respectively formed at the ends of the two channels which are not connected;
the liquid cooling loop includes two of the channels.
3. The battery module of claim 2, wherein a thermally conductive adhesive is further disposed between the liquid cooling plate and the electric core assembly.
4. The battery module according to claim 3, wherein an insulating plate is further disposed between the thermally conductive adhesive and the electric core assembly.
5. The battery module according to claim 1, wherein a cooling water tank and a circulating water pump are further provided on the liquid cooling circuit;
the cooling water tank is used for containing cooling liquid, an inlet and an outlet are formed on the cooling water tank, and the outlet is connected to the liquid outlet;
the circulating water pump comprises a liquid inlet end and a liquid outlet end, the liquid inlet end is connected to the outlet, and the liquid outlet end is connected to the liquid inlet.
6. The battery module according to claim 1, wherein the air-cooling circuit comprises an air-cooling channel, the air-cooling channel comprises a first channel and a second channel, the first channel is connected with the second channel, the first channel is disposed in the second sub-cavity, the second channel is disposed in the first sub-cavity, the air inlet is formed in the first channel, and the air outlet is formed in the second channel; and/or the presence of a gas in the atmosphere,
and a cooling fan is arranged on the air cooling loop, the cooling fan is arranged in the accommodating cavity and is positioned on the partition plate, and an air outlet of the cooling fan faces the second sub-cavity.
7. The battery module according to claim 6, further comprising:
the control module is arranged on the shell and used for electrically connecting the cooling fan and the electric core assembly; and the number of the first and second groups,
the temperature sensor is arranged in the shell and used for monitoring the temperature of the electric core assembly, and the temperature sensor is electrically connected with the control module.
8. The battery module of claim 1, wherein the battery module further comprises an auxiliary heat sink, the auxiliary heat sink comprising a plurality of heat dissipation fins, the plurality of heat dissipation fins being spaced apart from the housing.
9. The temperature control method for the battery module according to any one of claims 1 to 8, wherein a cooling fan is disposed on the air-cooled loop, the cooling fan is disposed in the accommodating cavity and located on the partition plate, and an air outlet of the cooling fan is disposed toward the second sub-cavity;
the temperature control method comprises the following steps:
acquiring the actual temperature of the electric core assembly;
calculating the temperature difference value between the actual temperature and the preset temperature;
and determining the control strategy of the cooling fan according to the temperature difference.
10. The method of claim 9, wherein the step of determining the cooling fan control strategy based on the temperature difference comprises:
when the temperature difference is higher than a preset difference, starting the cooling fan;
and when the temperature difference is lower than a preset difference, the cooling fan is turned off.
CN202211283836.8A 2022-10-18 2022-10-18 Battery module and temperature control method thereof Pending CN115566316A (en)

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Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211283836.8A CN115566316A (en) 2022-10-18 2022-10-18 Battery module and temperature control method thereof

Publications (1)

Publication Number Publication Date
CN115566316A true CN115566316A (en) 2023-01-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211283836.8A Pending CN115566316A (en) 2022-10-18 2022-10-18 Battery module and temperature control method thereof

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116505126A (en) * 2023-04-18 2023-07-28 合肥国轩高科动力能源有限公司 Cooling plate and cooling system of energy storage device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116505126A (en) * 2023-04-18 2023-07-28 合肥国轩高科动力能源有限公司 Cooling plate and cooling system of energy storage device
CN116505126B (en) * 2023-04-18 2023-10-13 合肥国轩高科动力能源有限公司 Cooling plate and cooling system of energy storage device

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