CN113921937B - Direct cooling heat dissipation lithium battery module structure - Google Patents
Direct cooling heat dissipation lithium battery module structure Download PDFInfo
- Publication number
- CN113921937B CN113921937B CN202111030308.7A CN202111030308A CN113921937B CN 113921937 B CN113921937 B CN 113921937B CN 202111030308 A CN202111030308 A CN 202111030308A CN 113921937 B CN113921937 B CN 113921937B
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- Prior art keywords
- battery module
- heat
- heat dissipation
- heat conduction
- wall
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Links
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 46
- 238000001816 cooling Methods 0.000 title claims abstract description 25
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 17
- 239000004744 fabric Substances 0.000 claims abstract description 53
- 239000004519 grease Substances 0.000 claims description 35
- 229920001296 polysiloxane Polymers 0.000 claims description 35
- 230000000712 assembly Effects 0.000 claims description 15
- 238000000429 assembly Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003475 lamination Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 35
- 230000000694 effects Effects 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01M10/6554—Rods or plates
-
- 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
-
- 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 direct cooling heat dissipation lithium battery module structure, and relates to the field of batteries. The key points of the technical scheme include: a housing; a battery module disposed within the housing; the heat conduction structure is arranged between the battery module and the inner wall of the shell and comprises a cloth base layer and a heat conduction layer; the cloth base layer comprises a forward air smooth surface and a reverse air smooth surface, and the reverse air smooth surface faces the inner wall of the shell. The invention adopts a direct cooling heat dissipation mode, and has the advantages of large heat dissipation area, fast heat dissipation and no interaction between external environment temperatures.
Description
Technical Field
The invention relates to the field of batteries, in particular to a direct cooling heat dissipation lithium battery module structure.
Background
The electric power-assisted bicycle or the electric vehicle takes a battery as an auxiliary power source, and the battery has two installation modes at present, namely an external type and an internal type.
For batteries installed internally, how to release heat generated during the use of the battery quickly and effectively is an important problem to be studied and improved.
The prior Chinese patent with publication number of CN109244596A discloses a lithium battery capable of rapidly radiating, which comprises a lithium battery cell and a radiating shell, wherein radiating fins are arranged outside the radiating shell, a cavity is arranged inside the radiating shell, the cavity is provided with at least distributed pore channels on the upper surface and the lower surface of the radiating shell, the pore channels are connected to a high-pressure circulating pump through a conduit, and a composite radiating material is arranged in the cavity. I.e. the patent uses a high pressure circulation pump to achieve active heat dissipation.
However, for electric power-assisted bicycle or electric motor car, the battery is as auxiliary power source, if adopt initiative heat dissipation, on the one hand can influence the continuation of journey of battery, on the other hand can lead to the structure complicacy, and is bulky, inconvenient installation, and the cost is higher.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a direct cooling heat dissipation lithium battery module structure which adopts a direct cooling heat dissipation mode and has the advantages of large heat dissipation area, fast heat dissipation and no interaction of external environment temperature.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a direct cooling heat dissipation lithium battery module structure, comprising:
a housing;
a battery module disposed within the housing;
further comprises:
the heat conduction structure is arranged between the battery module and the inner wall of the shell and comprises a cloth base layer and a heat conduction layer;
the cloth base layer comprises a forward air smooth surface and a reverse air smooth surface, and the reverse air smooth surface faces the inner wall of the shell.
Further, the forward air smooth surface of the cloth base layer is in contact with the battery module, and the heat conduction layer is arranged between the reverse air smooth surface of the cloth base layer and the inner wall of the shell.
Further, the heat conduction layer is a heat conduction silicone grease layer, and the cloth base layer and the heat conduction silicone grease layer are pressed into a whole to form a cloth base heat conduction silicone grease strip or a cloth base heat conduction silicone grease sheet.
Further, the outer wall of the shell is provided with a heat dissipation groove or a heat dissipation convex edge opposite to the heat conduction structure.
Further, the battery module includes a plurality of battery cell assemblies arranged in a stacked manner, the battery cell assemblies including a thermally conductive sheet in contact with the thermally conductive structure.
Further, the heat conducting fin is arranged on the lamination contact surface of the battery unit component and extends to the side wall of the battery unit component; the portion of the thermally conductive sheet extending to the side wall of the battery cell assembly is in contact with the thermally conductive structure.
Further, the shell comprises a box body and a side cover plate, and the side cover plate is connected with the box body through a fastener; the other side of the heat conducting structure contacted with the heat conducting sheet is contacted with the inner wall of the side cover plate.
Further, a sealing ring is arranged at the joint of the box body and the outer wall of the side cover plate.
Further, the battery module comprises a battery control board positioned at the end part of the battery module, and an MOS tube is arranged on the battery control board; the battery control panel is provided with the heat conduction structure which is contacted with the MOS tube.
Further, the inner wall of the shell is provided with a heat conducting part in contact with the heat conducting structure on the battery control panel in an extending mode.
In summary, the invention has the following beneficial effects:
the cloth base layer and the heat conducting layer are combined to form a heat conducting structure, so that heat generated by the battery module can be smoothly transferred to the external environment through the heat conducting sheet, the heat conducting structure and the shell, and rapid heat dissipation is realized; meanwhile, the cloth base layer can prevent the external environment temperature from being reversely transferred to the battery module, so that the heat dissipation persistence and the cooling effect of the battery module are improved, and the service life of the battery module is prolonged; the heat conduction structure is arranged between the battery module and the inner wall of the shell, so that direct cooling and heat dissipation are realized, the electric quantity of the battery module is not required to be additionally consumed, the structure is simple, the volume is small, and the heat conduction structure is convenient to install on vehicles such as electric power-assisted bicycles, electric vehicles or electric motorcycles.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a direct cooling heat dissipation lithium battery module structure in an embodiment;
fig. 2 is a schematic structural diagram of a direct cooling heat dissipation lithium battery module structure in an embodiment;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
FIG. 4 is a schematic view of the structure of the end cap in an embodiment;
fig. 5 is an exploded view of a battery module according to an embodiment;
fig. 6 is a schematic view of a structure of a battery module according to an embodiment;
fig. 7 is a schematic structural view of a battery cell assembly according to an embodiment.
In the figure: 11. a case; 111. a bending part; 112. a connection part; 12. a side cover plate; 121. a heat dissipating rib; 13. an end cap; 131. a heat dissipation groove; 132. an embedding part; 133. a heat conduction part; 2. a socket; 3. a handle; 4. a seal ring; 51. fixing the substrate; 52. a battery cell assembly; 521. a cell holder; 522. soft package battery core; 523. an electrode plate; 524. wiring clamping grooves; 525. a heat conductive sheet; 53. a fixed bracket; 541. a long screw; 542. a nut; 543. an internal threaded bolt; 55. an insulating plate; 56. a battery control board; 57. a MOS tube; 58. nickel flakes; 59. a buffer pad; 61. cloth-based heat-conducting silicone grease sheet; 62. cloth-based heat-conducting silicone grease strips.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Examples:
referring to fig. 1, 2 and 5, a direct cooling heat dissipation lithium battery module structure comprises a shell, wherein a battery module is arranged in the shell; in the embodiment, a heat conducting structure is arranged between the battery module and the inner wall of the shell, and comprises a cloth base layer and a heat conducting layer; the cloth base layer comprises a forward air smooth surface and a reverse air smooth surface, and the reverse air smooth surface faces the inner wall of the shell; the cloth substrate layer in this embodiment belongs to the prior art, and has directionality, that is, the forward direction can penetrate through nanoscale air molecules or water molecules without obstacle, and the reverse direction slows down the circulation of air molecules; the cloth base layer and the heat conducting layer are combined to form a heat conducting structure, so that heat generated by the battery module can be smoothly transferred to the external environment through the heat conducting structure and the shell, and rapid heat dissipation is realized; meanwhile, the cloth base layer can prevent the external environment temperature from being reversely transferred to the battery module, so that the heat dissipation persistence and the cooling effect of the battery module are improved, and the service life of the battery module is prolonged; in the embodiment, the heat conducting structure is arranged between the battery module and the inner wall of the shell, so that direct cooling and heat dissipation are realized, the electric quantity of the battery module is not required to be additionally consumed, the structure is simple, the volume is small, and the heat conducting structure is convenient to install on vehicles such as electric power-assisted bicycles, electric vehicles or electric motorcycles.
Referring to fig. 1, 2 and 5, preferably, the forward air passing surface of the cloth substrate in the present embodiment contacts the battery module, and the heat conducting layer is disposed between the reverse air passing surface of the cloth substrate and the inner wall of the casing; the heat conduction layer is arranged between the reverse air slow-passing surface of the cloth base layer and the inner wall of the shell, so that the blocking effect of the cloth base layer on the external environment temperature can be further improved, and the cooling and radiating effects are improved; specifically, the heat conducting layer is a heat conducting silicone grease layer in this embodiment, and the cloth base layer and the heat conducting silicone grease layer are laminated into a whole to form a cloth base heat conducting silicone grease strip 62 or a cloth base heat conducting silicone grease sheet 61; the cloth base layer and the heat-conducting silicone grease layer are pressed into a whole, so that on one hand, the blocking effect of the cloth base layer on the external environment temperature can be further improved, on the other hand, the tear resistance of the heat-conducting silicone adhesive layer can be enhanced, and meanwhile, the number of parts can be reduced, so that the installation and the management are convenient; preferably, in this embodiment, the cloth-based heat-conducting silicone grease strips 62 or the cloth-based heat-conducting silicone grease sheets 61 are adhered to the battery module, and the adhesive surface is a forward air passing surface of the cloth-based layer, so that heat generated by the battery module can be quickly transferred out through the cloth-based heat-conducting silicone grease strips 62 or the cloth-based heat-conducting silicone grease sheets 61.
Referring to fig. 5 and 7, the battery module in the present embodiment includes a plurality of battery cell assemblies 52 arranged in a stacked manner, and the battery cell assemblies 52 include heat conductive sheets 525 in contact with a heat conductive structure; wherein the heat conductive sheet 525 is disposed on the lamination contact surface of the battery cell assembly 52 and extends to the side wall of the battery cell assembly 52, and the portion of the heat conductive sheet 525 extending to the side wall of the battery cell assembly 52 contacts the heat conductive structure; after the battery cell assemblies 52 are arranged in a stacked manner, adjacent battery cell assemblies 52 are contacted through the heat conducting fins 525, and the heat conducting fins 525 are contacted with the heat conducting structure, so that a heat dissipation path from the heat conducting fins 525 and the heat conducting structure to the shell is formed, and heat generated by the battery module is favorably transferred from inside to outside.
Referring to fig. 5 and 7, in this embodiment, cloth-based heat-conducting silicone grease sheets 61 are adhered to both sides of the battery module, and the cloth-based heat-conducting silicone grease sheets 61 are in contact with heat-conducting sheets 525 on all the battery cell assemblies 52, so that a large heat dissipation area is formed, which is beneficial to realizing rapid heat dissipation.
Referring to fig. 7, the battery unit assembly 52 in the present embodiment includes a battery core bracket 521, two soft package battery cores 522 are disposed in the battery core bracket 521, and electrode plates 523 are disposed at both ends of the battery core bracket 521; the positive electrode lugs of the two soft package battery cells 522 are welded on one electrode plate 523, and the negative electrode lugs are welded above the other electrode plate 523; the electrode plate 523 is preferably made of copper-nickel plating material, and in the embodiment, the electrode plate 523 and the cell bracket 521 are fixed by a buckle, so that the installation is convenient; in this embodiment, the battery unit assembly 52 includes two heat conducting fins 525, which are disposed on two sides and respectively contact with two soft package electric cores 522, and the package structure formed by the two heat conducting fins 525 can play a role in protecting the soft package electric cores 522, and play a role in conducting heat, and the contact area is large, so that the quick heat dissipation is facilitated.
Referring to fig. 5 and 7, the heat conducting fin 525 in the present embodiment is preferably an ultra-thin aluminum foil with a wall thickness of about 0.3mm, and the aluminum alloy has the advantages of a heat conducting block and a heat dissipating block, and can rapidly transfer heat; in this embodiment, the heat conducting fin 525 is U-shaped, and the side plate portion and the cell bracket 521 are fixed by a buckle, so that the connection stability of the heat conducting fin 525 and the cell bracket 521 is ensured, and the installation is convenient; the side plate part of the heat conducting fin 525 is contacted with the cloth-based heat conducting silicone grease 61 to realize heat transfer; further, in this embodiment, two double-sided heat-conducting adhesives are disposed between the heat-conducting strip 525 and the soft-package battery core 522, so that on one hand, the heat-conducting strip 525 and the soft-package battery core 522 can be firmly bonded, and on the other hand, heat transfer between the soft-package battery core 522 and the heat-conducting strip 525 is facilitated.
Referring to fig. 5 and 7, in this embodiment, a wire clip groove 524 is provided at an end of the battery core bracket 521, and the battery module is conveniently routed through the wire clip groove 524, so that the wire harness is reasonably arranged, the wire harness is orderly routed, and the wire harness can be effectively prevented from being ejected; after the battery cell assemblies 52 are stacked, the battery cell assemblies 52 to be connected in series are connected through the nickel sheets 58, preferably, the welded nickel sheets 58 in the embodiment are arched, so that a buffering effect is achieved, tearing of high-frequency vibration to welding spots can be reduced, disconnection of welding positions of the nickel sheets 58 is avoided, and safety and reliability are improved.
Referring to fig. 5 and 7, in particular, the battery module in the present embodiment includes a fixing substrate 51 and a fixing bracket 53, the fixing substrate 51 and the fixing bracket 53 sandwiching a plurality of battery cell assemblies 52 arranged in a stacked manner; wherein, the fixed base plate 51, the plurality of battery unit components 52 and the fixed bracket 53 are connected by a fastening component; the fastening assembly in this embodiment includes a long screw 541 and a nut 542, where the long screw 541 penetrates from the fixed substrate 51, passes through the cell holders 521 of the plurality of battery cell assemblies 52 in sequence, and then penetrates from the fixed holder 53, and the nut 542 is screwed on the long screw 541 and contacts with the fixed holder 53, so that the fixed substrate 51, the plurality of battery cell assemblies 52, and the fixed holder 53 can be connected as a whole; an insulating plate 55 is arranged between the fixing bracket 53 and the battery unit assembly 52 in the embodiment, so that the safety can be improved; in other alternative embodiments, a plurality of stacked arrangement of battery cell assemblies 52 may be connected by other means, without limitation.
Referring to fig. 5, the battery module further includes a battery control board 56 at an end thereof, a MOS tube 57 is provided on the battery control board 56, and a heat conductive structure contacting the MOS tube 57 is provided on the battery control board 56; specifically, in this embodiment, the battery control board 56 is mounted on the fixing bracket 53 by bolts, and two rows of MOS tubes 57 are provided on the battery control board 56; the heat conduction structure is a cloth-based heat conduction silicone grease strip 62, the cloth-based heat conduction silicone grease strip 62 is adhered to the root parts of pins of the MOS tubes 57, four rows of pins are arranged in the two rows of the MOS tubes 57, and the whole coverage of all the pins is realized by adopting three cloth-based heat conduction silicone grease strips 62; the cloth-based heat-conducting silicone grease strips 62 are adhered to the root parts of the pins of the MOS tube 57, so that heat generated by the MOS tube 57 can be quickly transferred out through the cloth-based heat-conducting silicone grease strips 62, cooling is realized, and the service life is prolonged.
Referring to fig. 1, specifically, the casing in this embodiment includes a case 11, two side cover plates 12, and an end cover 13; wherein, the side cover plate 12 closes the side opening of the box body 11, and the end cover 13 closes the end opening of the box body 11, thereby forming a closed cavity in the shell for installing the battery module; the end cover 13 is provided with a socket 2 for charging or discharging, and the end cover 13 is provided with a handle 3, thereby being convenient for lifting.
Referring to fig. 1 to 6, in the present embodiment, a plurality of buffer gaskets 59 are adhered to the end surface of the fixed substrate 51, and after the battery module is placed in the case 11, the buffer gaskets 59 contact with the inner bottom wall of the case 11, so that the buffer effect can be improved; in the embodiment, the fixing bracket 53 is penetrated with a bolt connected with the side cover plate 12, so that the battery module is connected with the shell, and the stability of the battery module is improved; when the end cover 13 is installed, the end part of the long screw 541 penetrates into the end cover 13, and then the inner threaded bolt 543 matched with the long screw 541 is screwed in from the outer side of the end cover 13, so that the end cover 13 and the box 11 can be connected, the overall stability can be improved, the number of parts is reduced, and the installation is convenient; further, an embedded part 132 matched with the box body 11 is arranged on the inner end surface of the end cover 13, and the embedded part 132 is matched with the box body 11, so that on one hand, the connection stability of the end cover 13 and the box body 11 can be improved, and on the other hand, the tightness can be improved; of course, in alternative embodiments, the end cap 13 and the case 11 may be connected by other means, which is not limited herein.
Referring to fig. 1 to 5, the outer wall of the housing is provided with a heat dissipation groove or a heat dissipation rib opposite to the heat conduction structure; specifically, in this embodiment, the inner side wall of the side cover plate 12 contacts the cloth-based heat-conducting silicone grease sheet 61, and the outer side wall of the side cover plate 12 is provided with the heat-dissipating ribs 121, so that the heat-dissipating area of the side cover plate 12 can be increased by the heat-dissipating ribs 121, which is beneficial to rapidly transferring heat to the external environment and improving the heat-dissipating and cooling effects; in this embodiment, three heat conducting parts 133 respectively contacting with the cloth-based heat conducting silicone grease strips 62 are arranged on the inner end wall of the end cover 13 in an extending manner, and a heat dissipating groove 131 is arranged on the outer end wall of the end cover 13; the heat of the cloth-based heat-conducting silicone grease strips 62 is transferred to the end cover 13 through the heat-conducting part 133, and the heat-radiating grooves 131 on the outer side wall of the end cover 13 can increase the heat-radiating area, so that the heat is transferred to the external environment quickly, and the heat-radiating and cooling effects are improved; meanwhile, the heat conduction part 133 presses on the cloth-based heat conduction silicone grease 62, and the stability of the battery control board 56 can be improved; of course, in other alternative embodiments, other structures may be used to increase the heat dissipation area, and the heat dissipation area is not limited to the ribs or grooves, but is not limited thereto.
Referring to fig. 1 to 3, in the present embodiment, the side cover 12 is connected to the case 11 by a fastener, and a sealing ring 4 is provided at a joint of the case 11 and an outer wall of the side cover 12, so that the sealing performance can be improved; specifically, the side plate of the case 11 is formed with a bent portion 111 and a connection portion 112 connected to the bent portion 111, the connection portion 112 being located inside the side cover 12, so that sealability can be improved; the inner side wall of the connecting part 112 is provided with a press-riveting nut, and bolts connected with the press-riveting nut penetrate through the outer side of the side cover plate 12, so that the side cover plate 12 and the box body 11 can be fastened and connected; a groove is formed between the bending part 111 and the end face of the side cover plate 12, sealant is filled in the groove, and a sealing ring 4 is formed after the sealant is dried, so that the sealing effect can be improved; the sealant can be automatically dispensed by a dispenser, so that the production efficiency is improved; of course, in other alternative embodiments, the sealing ring 4 may take other forms, such as being sandwiched between the side cover plate 12 and the connecting portion 112, which is not limited herein.
Referring to fig. 1, 2 and 5, in this embodiment, after the battery module is installed in the case 11, the side cover plate 12 is installed, so that the side cover plate 12 is in close contact with the heat-conductive silicone grease layer of the cloth-based heat-conductive silicone grease sheet 61, and the soft heat-conductive silicone grease layer is filled and compacted between the side cover plate 12 and the battery module under the condition of being stressed, thereby improving the heat transfer efficiency and the heat dissipation effect; in this embodiment, the side cover plate 12 is used as an independent mounting member, so that on one hand, a profile stretching process is conveniently adopted, and the heat dissipation ribs 121 are directly formed on the side cover plate 12, so that the heat dissipation area is increased, and on the other hand, the cloth-based heat conduction silicone grease 61 can be pressed during mounting, so that the heat transfer efficiency is improved, and the heat dissipation effect is improved.
Claims (6)
1. A direct cooling heat dissipation lithium battery module structure, comprising:
a housing;
a battery module disposed within the housing;
characterized by further comprising:
the heat conduction structure is arranged between the battery module and the inner wall of the shell and comprises a cloth base layer and a heat conduction layer;
the cloth base layer comprises a forward air smooth surface and a reverse air slow surface, and the reverse air slow surface faces the inner wall of the shell;
the forward air smooth surface of the cloth base layer is in contact with the battery module, and the heat conducting layer is arranged between the reverse air smooth surface of the cloth base layer and the inner wall of the shell;
the heat conduction layer is a heat conduction silicone grease layer, and the cloth base layer and the heat conduction silicone grease layer are pressed into a whole to form cloth base heat conduction silicone grease strips or cloth base heat conduction silicone grease sheets;
the outer wall of the shell is provided with a heat dissipation groove or a heat dissipation convex rib opposite to the heat conduction structure;
the battery module includes a plurality of battery cell assemblies arranged in a stacked manner, the battery cell assemblies including thermally conductive sheets in contact with the thermally conductive structure.
2. The direct cooling heat dissipation lithium battery module structure of claim 1, wherein: the heat conducting fin is arranged on the lamination contact surface of the battery unit component and extends to the side wall of the battery unit component; the portion of the thermally conductive sheet extending to the side wall of the battery cell assembly is in contact with the thermally conductive structure.
3. The direct cooling heat dissipation lithium battery module structure of claim 1, wherein: the shell comprises a box body and a side cover plate, and the side cover plate is connected with the box body through a fastener; the other side of the heat conducting structure contacted with the heat conducting sheet is contacted with the inner wall of the side cover plate.
4. The direct cooling heat dissipation lithium battery module structure according to claim 3, wherein: and a sealing ring is arranged at the joint of the box body and the outer wall of the side cover plate.
5. The direct cooling heat dissipation lithium battery module structure of claim 1, wherein: the battery module comprises a battery control board positioned at the end part of the battery module, and an MOS tube is arranged on the battery control board; the battery control panel is provided with the heat conduction structure which is contacted with the MOS tube.
6. The direct cooling heat dissipation lithium battery module structure of claim 5, wherein: the inner wall of the shell is provided with a heat conduction part in contact with a heat conduction structure on the battery control panel in an extending mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111030308.7A CN113921937B (en) | 2021-09-03 | 2021-09-03 | Direct cooling heat dissipation lithium battery module structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111030308.7A CN113921937B (en) | 2021-09-03 | 2021-09-03 | Direct cooling heat dissipation lithium battery module structure |
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| CN113921937A CN113921937A (en) | 2022-01-11 |
| CN113921937B true CN113921937B (en) | 2024-03-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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