CN114069100B - Heat conduction structure for lithium battery heat management and method thereof - Google Patents
Heat conduction structure for lithium battery heat management and method thereof Download PDFInfo
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- CN114069100B CN114069100B CN202111400761.2A CN202111400761A CN114069100B CN 114069100 B CN114069100 B CN 114069100B CN 202111400761 A CN202111400761 A CN 202111400761A CN 114069100 B CN114069100 B CN 114069100B
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- heat
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 129
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 229910052802 copper Inorganic materials 0.000 claims abstract description 31
- 239000010949 copper Substances 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 239000000741 silica gel Substances 0.000 claims description 10
- 229910002027 silica gel Inorganic materials 0.000 claims description 10
- 210000004027 cell Anatomy 0.000 claims description 6
- 210000005056 cell body Anatomy 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 6
- 239000012782 phase change material Substances 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
-
- 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
-
- 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
Abstract
The invention discloses a heat conduction structure for lithium battery heat management and a method thereof, wherein the heat conduction structure comprises a lithium battery body and a lithium battery shell, the outer surface of the lithium battery body is wrapped by a fixing assembly, a heat conduction mechanism and a push-pull operation unit are arranged in the lithium battery shell, the heat conduction mechanism comprises an air cooling unit and a heat conduction copper block, and one side of the heat conduction copper block is tightly contacted with the surface of the lithium battery body. According to the heat conduction structure for lithium battery heat management and the method thereof, the heat conduction operation of combining wind cooling with a conductor material is realized by the aid of the heat conduction mechanism and the battery mounting unit and by means of the heat conduction copper blocks, the fins and the wind cooling unit, and the heat conduction efficiency of the lithium battery can be improved by mounting the heat conduction structure between the mounting plate and the mounting groove, and the contact between the heat conduction copper blocks and the lithium battery can be effectively improved, so that the problem that the heat conduction is influenced by deflection caused by shaking is avoided.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a heat conduction structure for lithium battery heat management and a method thereof.
Background
At present, the thermal management importance of a power lithium battery system can be divided into four types, namely natural cooling, air cooling, liquid cooling and phase change material cooling, wherein the natural cooling speed is low firstly, when the air cooling has more heat for the use of a lithium battery, the heat dissipation is not complete enough, meanwhile, the energy loss required by the liquid cooling is more expensive, and the temperature which can be cooled by the phase change material cooling is maintained at 25-40 ℃, and the phase change material cooling cannot play a role when the temperature is too low.
Referring to Chinese patent, the patent name is: a square lithium battery pack heat management structure and a method thereof (patent publication number: CN111244571A, patent publication date: 2020.06.05) mainly comprise a square lithium battery, a semiconductor refrigerating piece and a phase change material, wherein two side surfaces of the square lithium battery are in contact with the semiconductor refrigerating piece, one surface of the semiconductor refrigerating piece is clung to the other surface of the square lithium battery and clung to the phase change material, the two side surfaces of the phase change material are in contact with the semiconductor refrigerating piece, the phase change material is utilized for cooling, if the semiconductor refrigerating piece still has further cooling requirements, the semiconductor refrigerating piece is electrified to work, the battery side is refrigerated, the highest temperature of the battery can be further lowered, the heat dissipation function of the battery pack can be realized even when the environment temperature is higher, the semiconductor refrigerating piece is electrified to heat the battery side at low temperature below zero, the heating function of the battery pack is realized efficiently and with low energy consumption.
To this end, the present invention provides a cooling means that combines wind cooling with conductor material, but still has the following problems:
1. the conductor needs to be in close contact with the lithium battery body in the heat conduction process, and the existing method is realized by a direct fixing mode, but the operation is troublesome once the later-stage lithium battery needs to be maintained or replaced, and meanwhile, if the conductor is not fixed, the conductor and the lithium battery are easily subjected to jolt to cause deflection;
2. When the lithium battery is used, only a single lithium battery unit is damaged, and the whole replacement is easy to cause resource waste.
The invention provides a heat conduction structure for lithium battery heat management and a method thereof.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a heat conduction structure for lithium battery heat management and a method thereof, which solve the problem of low heat conduction efficiency in the heat management of the lithium battery, and solve the problem that a conductor and the lithium battery deviate due to bumping in a cooling mode combining wind cooling and conductor materials, but are directly fixed and inconvenient for subsequent maintenance operation.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a lithium cell heat conduction structure for thermal management, includes lithium cell body and lithium cell shell, the surface of lithium cell body wraps up through fixed subassembly, the inside of lithium cell shell is provided with heat conduction mechanism and push-and-pull operation unit, including forced air cooling unit and heat conduction copper block in the heat conduction mechanism, the surface in close contact of one side and lithium cell body of heat conduction copper block, there is the fin one side of heat conduction copper block through the adhesive adhesion, the top fixedly connected with backup pad of heat conduction copper block and fin, it is fixed through battery installation unit between backup pad and the fixed subassembly, pass through the heat conduction silica gel interval between the adjacent lithium cell individual of lithium cell body, and the heat conduction hole has been seted up on the surface of heat conduction silica gel, including fixed plate and mutually symmetrical pulling plate in the battery installation unit, fixedly connected with expansion spring between the opposite sides of two pulling plates, first extending groove has been seted up on the surface of fixed plate, the second extending groove has been seted up at the top of backup pad, the inner surface of second extending groove has seted up the mounting groove, the bottom of pulling plate, fixed connection has the fixed surface connection of reset spring with one side, reset spring.
Preferably, the air cooling unit comprises a driving motor and a supporting rotating shaft, one sides of the driving motor and the supporting rotating shaft are fixedly connected with the inner surface of the lithium battery shell through a cross bracket, a radiating hole is formed in the surface of the lithium battery shell, one end of an output shaft of the driving motor is fixedly connected with the driving rotating shaft through a coupling, the outer surfaces of the driving rotating shaft and the supporting rotating shaft are in transmission connection through a transmission component, one ends of the driving rotating shaft and the supporting rotating shaft are fixedly connected with a heat conducting fan, and the heat conducting fan extends to the inside of the radiating hole.
Preferably, the transmission assembly comprises a driving wheel and a transmission wheel, the driving wheel is fixedly arranged on the outer surface of the driving rotating shaft, the transmission wheel is fixedly arranged on the outer surface of the supporting rotating shaft, and the outer surfaces of the driving wheel and the transmission wheel are in transmission connection through a transmission belt.
Preferably, the fixing assembly comprises an upper outer frame and a lower outer frame, one side of the upper outer frame is fixedly connected with one side of the fixing plate, the inner surfaces of the upper outer frame and the lower outer frame are in surface contact with the lithium battery body, a clamping block is fixedly connected to the opposite angle of the bottom of the upper outer frame through a connecting plate, a clamping groove is formed in the connecting plate at the opposite angle of the top of the lower outer frame, and the outer surface of the clamping block is in sliding connection with the inner surface of the clamping groove.
Preferably, the surface of the clamping block is penetrated and provided with a first thread groove, the connecting plate at the opposite angle of the top of the lower outer frame is provided with a second thread groove on the inner surface of the clamping groove, and the first thread groove is in threaded connection with the second thread groove through a thread bolt.
Preferably, the push-pull operation unit comprises a contact plate and a circular plate which are fixedly arranged on the upper outer frame, the circular plate and the contact plate are fixed through a clamping assembly, a sliding rod is fixedly connected to one side of the circular plate, and a limiting plate is fixedly connected to the inner surface of the lithium battery shell.
Preferably, one end of the sliding rod penetrates through the limiting plate and the lithium battery shell and extends to the outside of the lithium battery shell, one end of the sliding rod is fixedly connected with a control handle, and a torsion spring is fixedly connected between opposite sides of the circular plate and the limiting plate.
Preferably, the clamping assembly comprises a convex block fixedly arranged on the surface of the circular plate, one side of the contact plate is provided with a placing groove, and the inner surface of the placing groove is provided with a groove.
Preferably, the inner surface of the placing groove and one side of the groove are provided with a rotating groove, the outer surface of the protruding block is in sliding connection with the inner surface of the rotating groove, and the circular plate is in sliding connection with the inner surface of the placing groove.
The invention also discloses a heat conduction method for lithium battery heat management, which comprises the following steps:
S1, fixing an outer frame: placing the single lithium battery on the lower outer frame, placing heat-conducting silica gel between the single lithium battery, then wrapping the upper outer frame on the lithium battery, enabling a clamping block below the connecting plate to be immersed into the clamping groove, and screwing the clamping block into the first thread groove and the second thread groove through the thread bolts for fixing;
S2, pushing and pulling a lithium battery: at the moment, the lithium battery body which is installed is placed in the lithium battery shell, the pulled control handle is rotated, the convex blocks on the surface of the circular plate are aligned with the grooves, the pulling force of the control handle is reduced, the circular plate slides into the placing groove along the grooves until the position of the rotating groove is reached, the control handle is slowly loosened, the convex blocks are clamped with the rotating groove, and the lithium battery body is pushed to be in contact with the heat conducting copper block;
S3, heat conduction is stable: at the moment, the lithium battery body moves to the position that the first extending groove on the surface of the fixing plate is aligned with the second extending groove on the top of the supporting plate, then the pulling plate is pushed downwards, so that the sliding plate moves downwards in the sliding groove until the mounting plate moves to the mounting groove of the second extending groove, and the mounting plate is pushed into the mounting groove to be fixed by the restoring force of the telescopic spring and the restoring spring;
s4, heat conduction: after the installation is completed, heat generated by the lithium battery body is gathered through the heat-conducting copper block and is transmitted to the radiating hole through the fin, the driving motor is started at the moment, the driving motor is utilized to drive the rotation of the driving rotating shaft, and the driving rotating shaft drives the rotation of the supporting rotating shaft through the driving wheel, the driving wheel and the driving belt, so that the heat-conducting fan is driven to radiate outwards.
Advantageous effects
The invention provides a heat conduction structure for lithium battery heat management and a method thereof. Compared with the prior art, the method has the following beneficial effects:
(1) According to the heat conduction structure for lithium battery heat management and the method thereof, through the arrangement of the heat conduction mechanism and the battery installation unit, the heat conduction operation of combining wind cooling with a conductor material can be realized by utilizing the heat conduction copper block, the fins and the air cooling unit, and through the installation between the installation plate and the installation groove, the heat conduction efficiency of the lithium battery can be improved, and the contact between the heat conduction copper block and the lithium battery can be effectively improved, so that the problem that the heat conduction is influenced due to the deviation of the heat conduction copper block and the lithium battery caused by shaking is avoided.
(2) According to the heat conduction structure for lithium battery thermal management and the method thereof, the fixing assembly is arranged, the upper outer frame and the lower outer frame are mutually fixed, the clamping block is connected with the clamping groove in a clamping mode, the first thread groove and the second thread groove are fixed through the threaded bolt, so that the wrapping of the lithium battery is more stable, and meanwhile, the follow-up maintenance and replacement of the damaged lithium battery are facilitated, and the waste of materials is avoided.
(3) According to the heat conduction structure for lithium battery thermal management and the method thereof, the push-pull operation unit is arranged, the convex blocks and the grooves in the clamping assembly are used for being clamped, and the whole lithium battery body is driven to move by the restoring force of the torsion spring, so that the lithium battery can be placed and taken out conveniently, and the installation performance of the lithium battery body is improved.
Drawings
FIG. 1 is a perspective view of an external structure of the present invention;
FIG. 2 is a cross-sectional view of the internal perspective structure of the present invention;
FIG. 3 is an exploded view of the internal perspective structure of the present invention;
fig. 4 is an exploded view of a three-dimensional structure of a lithium battery body according to the present invention;
fig. 5 is an exploded view of a perspective structure of the battery mounting unit of the present invention;
FIG. 6 is an enlarged view of a portion of the structure of FIG. 5A in accordance with the present invention;
fig. 7 is a perspective view of an air cooling unit according to the present invention;
FIG. 8 is an exploded view of the push-pull operation unit of the present invention in a three-dimensional structure;
fig. 9 is an exploded view of the three-dimensional structure of the fixing assembly of the present invention.
In the figure: 1-lithium battery body, 2-lithium battery shell, 3-fixed component, 31-upper frame, 32-lower frame, 33-fixture block, 34-fixture groove, 35-first thread groove, 36-second thread groove, 37-thread bolt, 4-heat conduction mechanism, 41-air cooling unit, 41-1-driving motor, 41-2-supporting rotating shaft, 41-3-cross bracket, 41-4-heat dissipation hole, 41-5-driving rotating shaft, 41-6-transmission component, 41-61-driving wheel, 41-62-driving wheel, 41-63-driving belt, 41-7-heat conduction fan, 42-heat conduction copper block, 43-fin, 44-supporting plate 45-battery mounting unit, 45-1-fixing plate, 45-2-pulling plate, 45-3-extension spring, 45-4-first extension groove, 45-5-sliding groove, 45-6-second extension groove, 45-7-mounting groove, 45-8-mounting plate, 45-9-strut, 45-10-return spring, 45-11-sliding plate, 46-heat conductive silica gel, 47-heat conductive hole, 5-push-pull operation unit, 51-contact plate, 52-circular plate, 53-clamping component, 53-1-bump, 53-2-placing groove, 53-3-groove, 53-4-rotating groove, 54-sliding rod, 55-limiting plate, 56-control handle, 57-torsion spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention provides a technical solution: the heat conduction structure for lithium battery heat management comprises a lithium battery body 1 and a lithium battery shell 2, wherein the lithium battery body 1 is formed by a plurality of lithium battery individuals, the outer surface of the lithium battery body 1 is wrapped by a fixing component 3, a heat conduction mechanism 4 and a push-pull operation unit 5 are arranged in the lithium battery shell 2, the heat conduction mechanism 4 comprises an air cooling unit 41 and a heat conduction copper block 42, the heat conduction copper block 42 is used for concentrating heat generated when the lithium battery is used and transmitting the concentrated heat outwards through a fin 43, the air cooling unit 41 comprises a driving motor 41-1 and a supporting rotating shaft 41-2, the driving motor 41-1 is a three-item asynchronous motor, the driving motor 41-1 is electrically connected with an external power supply, one side of the driving motor 41-1 and one side of the supporting rotating shaft 41-2 are fixedly connected with the inner surface of the lithium battery shell 2 through a cross bracket 41-3, a heat dissipation hole 41-4 is formed in the surface of the lithium battery shell 2, the heat dissipation hole 41-4 is convenient for installing an air cooling unit 41 to discharge generated heat outwards, one end of an output shaft of the driving motor 41-1 is fixedly connected with the driving rotating shaft 41-5 through a coupler, the outer surfaces of the driving rotating shaft 41-5 and the supporting rotating shaft 41-2 are in transmission connection through a transmission assembly 41-6, one ends of the driving rotating shaft 41-5 and the supporting rotating shaft 41-2 are fixedly connected with a heat conducting fan 41-7, the heat conducting fan 41-7 is used for discharging heat generated by using a lithium battery outwards, the heat conducting fan 41-7 extends into the heat dissipation hole 41-4, the transmission assembly 41-6 comprises a driving wheel 41-61 and a transmission wheel 41-62, the driving wheel 41-61 is fixedly arranged on the outer surface of the driving rotating shaft 41-5, the driving wheel 41-62 is fixedly arranged on the outer surface of the supporting rotating shaft 41-2, the driving wheel 41-61 and the outer surface of the driving wheel 41-62 are in transmission connection through a driving belt 41-63, one side of the heat conducting copper block 42 is tightly contacted with the surface of the lithium battery body 1, one side of the heat conducting copper block 42 is adhered with a fin 43 through an adhesive, the heat discharging direction of the fin 43 is consistent with the direction of the heat discharging hole 41-4, the tops of the heat conducting copper block 42 and the fin 43 are fixedly connected with a supporting plate 44, the supporting plate 44 and the fixing component 3 are fixed through a battery mounting unit 45, adjacent lithium battery units of the lithium battery body 1 are separated through heat conducting silica gel 46, the surface of the heat conducting silica gel 46 is provided with a heat conducting hole 47, the heat conducting holes 47 facilitate the heat among the lithium battery individuals to be transmitted to the heat conducting copper block 42, the battery mounting unit 45 comprises a fixed plate 45-1 and mutually symmetrical pulling plates 45-2, a telescopic spring 45-3 is fixedly connected between opposite sides of the two pulling plates 45-2, a first extending groove 45-4 is formed on the surface of the fixed plate 45-1, when the first extending groove 45-4 is aligned with a second extending groove 45-6, the fixing of the lithium battery body 1 can be realized, a sliding groove 45-5 is formed on the inner surface of the first extending groove 45-4, a second extending groove 45-6 is formed on the top of the supporting plate 44, a mounting groove 45-7 is formed on the inner surface of the second extending groove 45-6, a mounting plate 45-8 is fixedly connected to the bottom of the pulling plate 45-2, and sliding clamping is realized between the mounting plate 45-8 and the mounting groove 45-7, the mounting plate 45-8 is in sliding connection with the mounting groove 45-7, one side of the pulling plate 45-2 is fixedly connected with the supporting rod 45-9, the surface of the supporting rod 45-9 is fixedly connected with the reset spring 45-10, one end of the reset spring 45-10 is fixedly connected with the sliding plate 45-11, the sliding plate 45-11 is in sliding clamping connection with the sliding plate 45-11, the outer surface of the sliding plate 45-11 is in sliding connection with the inner surface of the sliding groove 45-5, through the heat conduction mechanism 4 and the battery mounting unit 45, the heat conduction operation of combining wind cooling with a conductor material can be realized by utilizing the heat conduction copper block 42, the fins 43 and the air cooling unit 41, and the heat conduction efficiency of the lithium battery can be improved through the mounting between the mounting plate 45-8 and the mounting groove 45-7, and the contact between the heat conduction copper block 42 and the lithium battery can be effectively improved, so that the problem that the heat conduction is influenced by deflection of the heat conduction copper block 42 and the lithium battery caused by shaking is avoided. .
Referring to fig. 9, the fixing assembly 3 includes an upper frame 31 and a lower frame 32, the upper frame 31 and the lower frame 32 are used for wrapping and fixing the lithium battery, one side of the upper frame 31 is fixedly connected with one side of a fixing plate 45-1, the inner surfaces of the upper frame 31 and the lower frame 32 are in contact with the surface of the lithium battery body 1, a clamping block 33 is fixedly connected to the opposite angle of the bottom of the upper frame 31 through a connecting plate, sliding clamping connection is realized between the clamping block 33 and the clamping groove 34, a clamping groove 34 is formed in the connecting plate at the opposite angle of the top of the lower frame 32, the outer surface of the clamping block 33 is in sliding connection with the inner surface of the clamping groove 34, a first thread groove 35 is formed in the surface of the clamping block 33 in a penetrating mode, a thread bolt 37 is used for fixing the first thread groove 35 and the second thread groove 36 in a spiral mode, the upper frame 31 and the lower frame 32 are firmly connected with each other through the second thread groove 36, the second thread groove 36 is formed in the inner surface of the opposite angle of the lower frame 32, the first thread groove 35 and the second thread groove 36 are connected through the thread bolt 37 in a threaded mode, and the second thread groove is further damaged by the fixing the clamping groove 35 and the second thread groove 35, and the second battery is more convenient to replace the second thread groove and the second battery is more damaged.
Referring to fig. 8, the push-pull operation unit 5 includes a contact plate 51 and a circular plate 52 fixedly mounted on the upper frame 31, the circular plate 52 is fixedly connected with the contact plate 51 through a clamping assembly 53, the clamping assembly 53 includes a protruding block 53-1 fixedly mounted on the surface of the circular plate 52, the protruding block 53-1 is slidably matched with the groove 53-3, a placing groove 53-2 is formed in one side of the contact plate 51, a groove 53-3 is formed in the inner surface of the placing groove 53-2, a rotating groove 53-4 is formed in one side of the placing groove 53-3, sliding clamping is realized between the protruding block 53-1 and the rotating groove 53-4, the outer surface of the protruding block 53-1 is slidably connected with the inner surface of the rotating groove 53-4, the circular plate 52 is slidably connected with the inner surface of the placing groove 53-2, a sliding rod 54 is fixedly connected with one side of the circular plate 52, a limiting plate 55 is fixedly connected with the inner surface of the lithium battery shell 2, one end of the sliding rod 54 penetrates through the limiting plate 55 and the lithium battery shell 2 and extends to the outside the lithium battery shell 2, one end of the sliding rod 54 is fixedly connected with the sliding rod 56, the sliding rod is fixedly connected with the sliding rod 53-5 and the sliding rod is provided with the sliding rod 53-5, the sliding rod is rotatably connected with the sliding rod is rotatably arranged on one side of the sliding rod 5, and the sliding rod is rotatably connected with the sliding rod 53 through the sliding rod 5, and the sliding rod is rotatably arranged in the sliding rod 5, and the sliding rod body is rotatably connected with the sliding rod body 5, and the sliding rod body is rotatably to the sliding rod body by the sliding rod body 5, and the sliding rod body is rotatably connected with the sliding rod body by the sliding rod body and the sliding rod body.
The invention also discloses a heat conduction method for lithium battery heat management, which comprises the following steps:
S1, fixing an outer frame: placing the lithium battery monomer on the lower outer frame 32, placing heat conducting silica gel 46 between the lithium battery monomer, then wrapping the upper outer frame 31 for the lithium battery, enabling the clamping block 33 below the connecting plate to be immersed into the clamping groove 34, and screwing the clamping block 33 into the first thread groove 35 and the second thread groove 36 for fixing through the thread bolt 37;
S2, pushing and pulling a lithium battery: at this time, the installed lithium battery body 1 is put into the lithium battery shell 2, the pulled control handle 56 is rotated, the convex block 53-1 on the surface of the circular plate 52 is aligned with the groove 53-3, the pulling force of the control handle 56 is reduced, the circular plate 52 slides into the placing groove 53-2 along the groove 53-3 until the position of the rotating groove 53-4 is reached, the control handle 56 is slowly loosened, the convex block 53-1 is clamped with the rotating groove 53-4, and the lithium battery body 1 is pushed to be in contact with the heat conducting copper block 42;
S3, heat conduction is stable: at this time, the lithium battery body 1 is moved to the position where the first extension groove 45-4 of the surface of the fixing plate 45-1 is aligned with the second extension groove 45-6 of the top of the support plate 44, and then the pulling plate 45-2 is pushed downward, so that the sliding plate 45-11 moves downward inside the sliding groove 45-5 until the mounting plate 45-8 moves to the mounting groove 45-7 of the second extension groove 45-6, and the mounting plate 45-8 is pushed into the mounting groove 45-7 by the restoring force of the extension spring 45-3 and the restoring spring 45-10 to fix;
S4, heat conduction: after the installation is completed, heat generated by the lithium battery body 1 is gathered through the heat conducting copper block 42 and is transmitted to the heat radiating holes 41-4 through the fins 43, at the moment, the driving motor 41-1 is started, the driving motor 41-1 is utilized to drive the driving rotating shaft 41-5 to rotate, the driving rotating shaft 41-5 drives the supporting rotating shaft 41-2 to rotate through the driving wheel 41-61, the driving wheel 41-62 and the driving belt 41-63, and accordingly the heat conducting fan 41-7 is driven to radiate heat outwards.
And all that is not described in detail in this specification is well known to those skilled in the art.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a heat conduction structure for lithium cell thermal management, includes lithium cell body (1) and lithium cell shell (2), its characterized in that: the external surface of the lithium battery body (1) is wrapped by a fixing assembly (3), the fixing assembly (3) comprises an upper outer frame (31) and a lower outer frame (32), and a heat conduction mechanism (4) and a push-pull operation unit (5) are arranged in the lithium battery shell (2);
The lithium battery is characterized in that the heat conduction mechanism (4) comprises an air cooling unit (41) and a heat conduction copper block (42), one side of the heat conduction copper block (42) is tightly contacted with the surface of the lithium battery body (1), one side of the heat conduction copper block (42) is adhered with fins (43) through an adhesive, the tops of the heat conduction copper block (42) and the fins (43) are fixedly connected with a supporting plate (44), the supporting plate (44) and the fixing assembly (3) are fixed through a battery mounting unit (45), adjacent lithium battery units of the lithium battery body (1) are separated by heat conduction silica gel (46), and heat conduction holes (47) are formed in the surface of the heat conduction silica gel (46);
The battery mounting unit (45) comprises a fixed plate (45-1) and mutually symmetrical pulling plates (45-2), wherein a telescopic spring (45-3) is fixedly connected between opposite sides of the two pulling plates (45-2), a first extending groove (45-4) is formed in the surface of the fixed plate (45-1), a sliding groove (45-5) is formed in the inner surface of the first extending groove (45-4), a second extending groove (45-6) is formed in the top of the supporting plate (44), a mounting groove (45-7) is formed in the inner surface of the second extending groove (45-6), a mounting plate (45-8) is fixedly connected to the bottom of the pulling plate (45-2), a supporting rod (45-9) is fixedly connected to one side of the pulling plate (45-2), a reset spring (45-10) is fixedly connected to the surface of the supporting rod (45-9), one end of the reset spring (45-10) is fixedly connected to the inner surface of the sliding plate (45-11), and the sliding plate (45-11) is connected to the outer surface of the sliding plate (45-5);
The push-pull operation unit (5) comprises a contact plate (51) and a circular plate (52) which are fixedly arranged on an upper outer frame (31), the circular plate (52) and the contact plate (51) are fixed through a clamping assembly (53), one side of the circular plate (52) is fixedly connected with a sliding rod (54), the inner surface of the lithium battery shell (2) is fixedly connected with a limiting plate (55), one end of the sliding rod (54) penetrates through the limiting plate (55) and the lithium battery shell (2) and extends to the outside of the lithium battery shell (2), one end of the sliding rod (54) is fixedly connected with a control handle (56), and a torsion spring (57) is fixedly connected between the opposite sides of the circular plate (52) and the limiting plate (55);
The clamping assembly (53) comprises a protruding block (53-1) fixedly mounted on the surface of a circular plate (52), a placing groove (53-2) is formed in one side of the contact plate (51), a groove (53-3) is formed in the inner surface of the placing groove (53-2), a rotating groove (53-4) is formed in the inner surface of the placing groove (53-2) and located on one side of the groove (53-3), and the outer surface of the protruding block (53-1) is in sliding connection with the inner surface of the rotating groove (53-4), and the circular plate (52) is in sliding connection with the inner surface of the placing groove (53-2).
2. The heat conducting structure for lithium battery thermal management according to claim 1, wherein: the air cooling unit (41) comprises a driving motor (41-1) and a supporting rotating shaft (41-2), one sides of the driving motor (41-1) and the supporting rotating shaft (41-2) are fixedly connected with the inner surface of a lithium battery shell (2) through a cross bracket (41-3), a radiating hole (41-4) is formed in the surface of the lithium battery shell (2), one end of an output shaft of the driving motor (41-1) is fixedly connected with the driving rotating shaft (41-5) through a coupler, the outer surfaces of the driving rotating shaft (41-5) and the supporting rotating shaft (41-2) are in transmission connection through a transmission component (41-6), one ends of the driving rotating shaft (41-5) and the supporting rotating shaft (41-2) are fixedly connected with a heat conducting fan (41-7), and the heat conducting fan (41-7) extends to the inside of the radiating hole (41-4).
3. The heat conducting structure for lithium battery thermal management according to claim 2, wherein: the transmission assembly (41-6) comprises a driving wheel (41-61) and a driving wheel (41-62), wherein the driving wheel (41-61) is fixedly arranged on the outer surface of the driving rotating shaft (41-5), the driving wheel (41-62) is fixedly arranged on the outer surface of the supporting rotating shaft (41-2), and the outer surfaces of the driving wheel (41-61) and the driving wheel (41-62) are in transmission connection through a driving belt (41-63).
4. A heat transfer structure for lithium battery thermal management according to claim 3, wherein: one side of going up frame (31) and one side fixed connection of fixed plate (45-1), the internal surface of going up frame (31) and lower frame (32) and the surface contact of lithium cell body (1), the diagonal angle department of going up frame (31) bottom is through connecting plate fixedly connected with fixture block (33), draw-in groove (34) have been seted up on the connecting plate of lower frame (32) top diagonal angle department, and the surface and the internal surface sliding connection of draw-in groove (34) of fixture block (33).
5. The heat conducting structure for lithium battery thermal management according to claim 4, wherein: the surface of fixture block (33) runs through and has seted up first screw thread groove (35), on the connecting plate of lower frame (32) top diagonal department and be located the internal surface of draw-in groove (34) and seted up second screw thread groove (36), pass through threaded bolt (37) threaded connection between first screw thread groove (35) and second screw thread groove (36).
6. The conduction method of the heat conduction structure for lithium battery thermal management according to claim 5, wherein: the method specifically comprises the following steps:
S1, fixing an outer frame: placing the single lithium battery on a lower outer frame (32), placing heat-conducting silica gel (46) between the single lithium battery, wrapping the upper outer frame (31) so that a clamping block (33) below a connecting plate is immersed into a clamping groove (34), and screwing the clamping block into a first thread groove (35) and a second thread groove (36) through a thread bolt (37) for fixing;
S2, pushing and pulling a lithium battery: at the moment, the installed lithium battery body (1) is placed into the lithium battery shell (2), the pulled control handle (56) is rotated, the convex blocks (53-1) on the surface of the circular plate (52) are aligned with the grooves (53-3), the pulling force of the control handle (56) is reduced, the circular plate (52) slides into the placing groove (53-2) along the grooves (53-3) until the position of the rotating groove (53-4) is reached, the control handle (56) is slowly released, the convex blocks (53-1) are clamped with the rotating groove (53-4), and the lithium battery body (1) is pushed to be in contact with the heat conducting copper block (42);
S3, heat conduction is stable: at this time, the lithium battery body (1) moves to the position that the first extension groove (45-4) on the surface of the fixing plate (45-1) is aligned with the second extension groove (45-6) on the top of the supporting plate (44), then the pulling plate (45-2) is pushed downwards, so that the sliding plate (45-11) moves downwards in the sliding groove (45-5) until the mounting plate (45-8) moves to the mounting groove (45-7) of the second extension groove (45-6), and the mounting plate (45-8) is pushed into the mounting groove (45-7) to be fixed by the restoring force of the telescopic spring (45-3) and the restoring spring (45-10);
S4, heat conduction: after the installation is completed, heat generated by the lithium battery body (1) is gathered through the heat conducting copper block (42) and is transmitted to the radiating holes (41-4) through the fins (43), at the moment, the driving motor (41-1) is started, the driving motor (41-1) is utilized to drive the driving rotating shaft (41-5) to rotate, and the driving rotating shaft (41-5) drives the supporting rotating shaft (41-2) to rotate through the driving wheel (41-61), the driving wheel (41-62) and the driving belt (41-63), so that the heat conducting fan (41-7) is driven to radiate heat outwards.
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| CN117559041B (en) * | 2024-01-12 | 2024-03-19 | 深圳市神通天下科技有限公司 | Lithium ion battery pole piece structure and lithium ion battery assembly |
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