CN118522998B - Waterproof solid-state battery module - Google Patents
Waterproof solid-state battery module Download PDFInfo
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- CN118522998B CN118522998B CN202410976857.0A CN202410976857A CN118522998B CN 118522998 B CN118522998 B CN 118522998B CN 202410976857 A CN202410976857 A CN 202410976857A CN 118522998 B CN118522998 B CN 118522998B
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- Prior art keywords
- heat dissipation
- pressure release
- battery module
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- plate
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 152
- 238000009423 ventilation Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 30
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 24
- 230000005855 radiation Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 210000003437 trachea Anatomy 0.000 description 3
- 230000002687 intercalation Effects 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to the technical field of battery modules, in particular to a waterproof solid-state battery module. A waterproof solid-state battery module includes a case and two heat dissipation mechanisms. A battery mounting groove and two ventilation grooves are formed in the shell. Each heat dissipation mechanism comprises two heat dissipation components, and the two heat dissipation components divide the ventilation groove into a heat dissipation channel and two connecting channels. Each heat dissipation component comprises two heat dissipation plates and two pressure release pieces, and the heat dissipation plates are wavy, so that heat dissipation efficiency is improved. When the pressure release piece is used for pressure release, the pressure release piece is respectively close to the air inlets adjacent to the pressure release piece, and quick pressure release is facilitated. When the pressure relief is about to end, the distance between the pressure relief piece and the adjacent air inlet is long, so that the external air is difficult to enter the connecting pipe. The invention provides a waterproof solid-state battery module, which solves the problems that the existing waterproof battery module is poor in heat dissipation effect, and external air flows back into the battery module to damage the battery module when pressure is released.
Description
Technical Field
The invention relates to the technical field of battery modules, in particular to a waterproof solid-state battery module.
Background
The battery module is a unit assembled from a plurality of battery cells for providing higher voltage and capacity. The battery module consists of a plurality of battery cells, connectors and a battery management system. The battery module can be understood as an intermediate product of a battery core and a battery pack, which is formed by combining lithium ion battery cores in a serial-parallel connection mode and adding a single battery monitoring and managing device. The waterproof solid-state battery module is a battery system which realizes normal operation of the battery in various water areas and even deep water through special design and material treatment on the basis of the traditional solid-state battery module. The battery module not only has the characteristics of high energy density, high safety, long service life and the like of the solid-state battery, but also increases excellent waterproof capability, thereby greatly expanding the application field of the battery module. In order to avoid the battery pack from contacting with water, the shell is usually provided with a sealing property through assembly, so that the fault caused by water inflow inside the battery pack is avoided.
For example, the invention patent application with publication number CN117977073a provides a waterproof battery module, the collection board assembly and the battery cell group are guaranteed to be sealed, the upper cover board is connected with the signal collection board assembly in a sealing way, and the upper cover board is connected with the bus copper bar assembly in a sealing way, so that the battery cell group is sealed with the outside. However, due to the fully sealed structure, the heat dissipation effect of the battery module is greatly reduced, when the battery module operates abnormally, for example, a thermal runaway phenomenon occurs, the temperature of the battery module rises rapidly, the gas in the battery module expands rapidly, and then, if the pressure is not released in time, a safety accident is easily caused. And when the existing battery module is in pressure relief, if external air flows back into the battery module along with the pressure relief channel which cannot be closed in time, the electrode of the lithium battery can be in contact with air. Because the lithium battery lithium intercalation negative electrode has strong reducibility, the lithium battery lithium intercalation negative electrode is close to the property of metallic lithium, and can be rapidly oxidized once contacting air, generate heat and smoke, and can be ignited even cause explosion of a battery module without being controlled in time.
Disclosure of Invention
The invention provides a waterproof solid-state battery module, which solves the problems that the existing waterproof battery module is poor in heat dissipation effect, and external air flows back into the battery module to damage the battery module when pressure is released.
The waterproof solid-state battery module adopts the following technical scheme: a waterproof solid-state battery module includes a case and two heat dissipation mechanisms. A battery mounting groove is formed in the shell, two ventilation grooves are formed in the shell, and the battery is arranged in the battery mounting groove. The two ventilation grooves are distributed in sequence along a first direction, the first direction is a horizontal direction, and each ventilation groove is vertically arranged and penetrates through the shell.
Each heat dissipation mechanism is arranged in one ventilation groove. Each heat dissipation mechanism comprises two heat dissipation components, the two heat dissipation components are sequentially distributed along a first direction, the two heat dissipation components divide the ventilation groove into a heat dissipation channel and two connecting channels, the heat dissipation channel is located between the two heat dissipation components, the two connecting channels are arranged on two sides of the heat dissipation channel along the first direction and are communicated with the outside, the two ends of the heat dissipation channel along the vertical direction are air inlets, and the connecting channels are communicated with the battery mounting groove.
Each heat radiation component comprises two heat radiation plates and two pressure release pieces, the heat radiation plates are vertically arranged, the heat radiation plates are arranged along a second direction, the second direction is a horizontal direction, and the second direction is perpendicular to the first direction. The heating panel is the wave, and two heating panels distribute in proper order along upper and lower direction, have offered a flexible groove on every heating panel, and flexible groove vertical setting, every pressure release piece can set up in a flexible inslot with reciprocating. The pressure release piece is used for discharging the gas of the connecting channel into the heat dissipation channel when the air pressure in the connecting channel is increased. The pressure release piece is provided with a first position and a second position, wherein the first position of the pressure release piece is the middle part of the heat dissipation channel in the vertical direction. The second position of the pressure release piece is the end of the heat dissipation channel in the vertical direction.
Further, two rotating shafts are fixedly arranged in each ventilation groove, the two rotating shafts are sequentially distributed along the first direction, each rotating shaft is arranged along the second direction, and each heat dissipation assembly is arranged on one rotating shaft. In each heat radiation component, the lower side of the heat radiation plate positioned above is rotationally arranged on the rotating shaft, a first torsion spring is arranged at the joint of the rotating shaft and the heat radiation plate positioned above, the upper side of the heat radiation plate positioned below is rotationally arranged on the rotating shaft, and a second torsion spring is arranged at the joint of the rotating shaft and the heat radiation plate positioned below.
Further, a lifting frame is arranged in each telescopic groove, and the lifting frames can move up and down. The pressure release piece includes connecting pipe, shutoff piece and first spring. The connecting pipe is fixedly arranged on the lifting frame, the connecting pipe is arranged along the first direction, the connecting pipe is communicated with the connecting channel and the heat dissipation channel, one end of the connecting pipe, which is positioned in the connecting channel, is a first end, and one end of the connecting pipe, which is positioned in the heat dissipation channel, is a second end. The connecting pipe is internally and fixedly provided with a first connecting ring, and the first connecting ring and the connecting pipe are coaxially arranged. The plugging block comprises a first connecting rod and a connecting block, wherein the first connecting rod is arranged along a first direction, the first connecting rod is slidably arranged in the first connecting ring, and the connecting block is fixedly arranged at one end, close to the second end of the connecting pipe, of the first connecting rod. The first spring is sleeved on the first connecting rod and is connected with the first connecting ring and the connecting block.
Further, the pressure release piece also comprises a fixed ring and a rotating frame. The fixed ring is fixed to be set up in the connecting pipe, and fixed ring and first go-between distribute in proper order along the direction from the first end of connecting pipe to the second end. The fixed ring is provided with a plurality of first through holes, and the first through holes are distributed along the circumference of the fixed ring.
The rotating frame comprises a second connecting ring, a second connecting rod and fan blades. The second connecting ring and the second connecting rod are both arranged along the axial direction of the connecting pipe, the second connecting rod is rotationally arranged in the fixing ring, the second connecting ring is fixedly arranged at one end of the second connecting rod, which is close to the first end of the connecting pipe, and the second connecting ring is positioned at one side of the fixing ring, which is close to the second end of the connecting pipe. A plurality of second through holes are formed in the second connecting ring, the second through holes are distributed along the circumferential direction of the second connecting ring, and each second through hole is communicated with one first through hole. The fan blade is fixedly arranged at one end of the second connecting rod, which is close to the second end of the connecting pipe.
Further, along the up-down direction, a side of each lifting frame, which is close to the adjacent lifting frame, is a first side, and a side of each lifting frame, which is far away from the adjacent lifting frame, is a second side. The second side of each lifting frame is fixedly provided with a fixing plate. Each heat dissipation assembly further comprises at least two driving units, each driving unit is arranged on one heat dissipation plate, the driving units are located in the connecting channels, and the driving units are located at the telescopic grooves. Each drive unit comprises a flexible balloon, a gas tube, a piston rod and a second spring. The flexible air bag is fixedly arranged on the heat dissipation plate. The trachea is vertical to be set up, and the trachea is close to the one end fixed connection in flexible gasbag of the first side of crane, trachea and flexible gasbag intercommunication.
One end of the piston rod, which is close to the first side of the lifting frame, is slidingly arranged in the air pipe, and one end of the piston rod, which is close to the second side of the lifting frame, is fixedly connected with the fixing plate. The second spring is sleeved on the piston rod and is connected with the air pipe and the fixed plate.
Further, a first limit groove and a second limit groove are formed in the heat dissipation plate, and the first limit groove and the second limit groove are sequentially distributed along the direction from the first side to the second side of the lifting frame. The lifting frame is provided with a first chute, the first chute is arranged along the second direction, a clamping block and a third spring are arranged in the first chute, the clamping block is slidably arranged in the first chute, and the clamping block can be slidably arranged in the first limit groove or the second limit groove. The third spring is fixedly connected with the inner wall of the first chute and the clamping block.
Further, in every radiating component, the second spout has all been seted up to the upside of the heating panel that is in the top and the downside of the heating panel that is in the below, the second spout sets up along the second direction, be provided with a sealing unit in every second spout, every sealing unit includes expansion plate and a plurality of fourth spring, the expansion plate sets up along the second direction, in the second spout of one side upper and lower slip of expansion plate, the opposite side of expansion plate is fixed and is provided with first sealing strip, first sealing strip sets up along the second direction, first sealing strip offsets with the inner wall of ventilation groove. The fourth spring is connected with the expansion plate and the inner wall of the second chute.
Further, limiting plates are fixedly arranged on the inner walls of the upper side and the lower side of each connecting channel and are used for propping against the telescopic plates.
Further, each radiating plate is fixedly provided with a second sealing strip along two sides of the second direction, and the second sealing strips are used for propping against the inner wall of the ventilation groove.
Further, be provided with detachable apron on the shell, the apron is used for the shutoff with battery mounting groove, fixedly on the apron be provided with the third sealing strip, the outer wall of third sealing strip and shell offsets.
The beneficial effects of the invention are as follows: the invention relates to a waterproof solid-state battery module, which comprises a normal working state and a pressure release working state. Normal operating state: the pressure in the shell is stable, and the pressure release piece is in the first position. Air freely flows from the heat dissipation channel, and the gas in the shell circulates in battery mounting groove and connecting channel, and the air in the heat dissipation channel dispels the heat to the gas in the shell through the heating panel, simultaneously because the heating panel is the wave, the wave heating panel has increased the circulation length of air in the heat dissipation channel to radiating efficiency has been improved.
Pressure release working condition: when the pressure in the shell is increased due to abnormal conditions in the shell, the pressure release piece moves from the first position to the second position, the pressure release piece starts to release pressure, and the pressure release piece discharges gas in the connecting channel into the heat dissipation channel. Because the pressure release piece is in the second position, every pressure release piece is close to the air inlet adjacent with self respectively, does benefit to quick pressure release.
When the pressure release is about to end, the pressure release piece returns to the first position, and at the moment, the distance between the pressure release piece and an air inlet adjacent to the pressure release piece is far, so that the outside air is difficult to enter the connecting pipe while the pressure release piece still can release air. When the pressure release piece is out of air, external air is prevented from entering the connecting channel through the pressure release piece due to the change of external air pressure, and the oxygen content in the battery mounting groove is increased, so that fire is caused. To improve the safety of the waterproof type solid-state battery module.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic structural view of a waterproof solid-state battery module according to an embodiment of the present invention;
fig. 2 is a front view of a waterproof solid-state battery module according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
FIG. 4 is an enlarged view at B in FIG. 3;
fig. 5 is an exploded view of a waterproof solid-state battery module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a heat dissipation mechanism of a waterproof solid-state battery module according to an embodiment of the present invention;
Fig. 7 is an exploded view of a heat dissipation mechanism of a waterproof solid-state battery module according to an embodiment of the present invention;
FIG. 8 is an enlarged view of FIG. 7 at C;
fig. 9 is a schematic structural view of a pressure release member of a waterproof solid-state battery module according to an embodiment of the present invention;
FIG. 10 is a cross-sectional view taken at D-D of FIG. 9;
Fig. 11 is a schematic structural view of a lifting frame and a pressure release member of a waterproof solid-state battery module according to an embodiment of the present invention;
fig. 12 is a sectional view of a case of a waterproof solid-state battery module according to an embodiment of the present invention;
Fig. 13 is a cross-sectional view of another view of the case of a waterproof solid-state battery module according to an embodiment of the present invention.
In the figure: 100. a housing; 101. a battery mounting groove; 102. a vent groove; 103. an air inlet; 104. a rotating shaft; 105. a limiting plate; 106. a heat dissipation channel; 110. a connection channel; 200. a cover plate; 300. a third sealing strip; 400. a battery; 510. a heat dissipation plate; 511. a telescoping plate; 5121. a telescopic slot; 5122. a first limit groove; 5123. the second limit groove; 5124. a flexible balloon; 513. an air pipe; 514. a piston rod; 515. a second spring; 516. a fourth spring; 610. a lifting frame; 611. a connecting pipe; 612. a fixing plate; 613. a first chute; 614. a first connection ring; 620. a rotating frame; 621. a second connecting ring; 622. a second connecting rod; 623. a fan blade; 630. a fixing ring; 640. a block; 641. a first spring; 650. a clamping block; 651. and a third 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 to 13, a waterproof solid-state battery module according to an embodiment of the present invention includes a case 100 and two heat dissipation mechanisms. A battery mounting groove 101 is formed in the housing 100, two ventilation grooves 102 are formed in the housing 100, and a battery 400 is disposed in the battery mounting groove 101. The two ventilation slots 102 are sequentially distributed along a first direction, wherein the first direction is a horizontal direction, and each ventilation slot 102 is vertically arranged and penetrates through the housing 100.
Each heat dissipation mechanism is disposed within one of the vent slots 102. Each heat dissipation mechanism comprises two heat dissipation components, the two heat dissipation components are sequentially distributed along a first direction, the two heat dissipation components divide the ventilation groove 102 into a heat dissipation channel 106 and two connecting channels 110, the heat dissipation channel 106 is located between the two heat dissipation components, the two connecting channels 110 are arranged on two sides of the heat dissipation channel 106 along the first direction, the heat dissipation channel 106 is communicated with the outside, the two ends of the heat dissipation channel 106 along the vertical direction are air inlets 103, and the connecting channels 110 are communicated with the battery mounting groove 101.
Each heat dissipation assembly comprises two heat dissipation plates 510 and two pressure release pieces, the heat dissipation plates 510 are vertically arranged, the heat dissipation plates 510 are arranged along a second direction, the second direction is a horizontal direction, and the second direction is perpendicular to the first direction. The heat dissipation plates 510 are wavy, the two heat dissipation plates 510 are sequentially distributed along the up-down direction, each heat dissipation plate 510 is provided with a telescopic groove 5121, the telescopic grooves 5121 are vertically arranged, and each pressure release piece can be arranged in one telescopic groove 5121 in a vertically movable mode. The pressure release member is used to release the air from the connection channel 110 into the heat dissipation channel 106 when the air pressure in the connection channel 110 increases. The pressure relief piece has a first position that is a middle of the heat dissipation channel 106 in the vertical direction and a second position. The second position of the pressure relief piece is the end of the heat dissipation channel 106 in the vertical direction.
A waterproof solid-state battery module includes a normal operation state and a pressure release operation state. Normal operating state: the air pressure within the housing 100 is stable and the pressure relief member is in the first position. Air freely flows from the heat dissipation channel 106, and the air in the shell 100 circulates in the battery mounting groove 101 and the connecting channel 110, and the air in the heat dissipation channel 106 dissipates the heat of the air in the shell 100 through the heat dissipation plate 510, and meanwhile, the wave-shaped heat dissipation plate 510 increases the circulation length of the air in the heat dissipation channel 106 due to the fact that the heat dissipation plate 510 is wave-shaped, so that the heat dissipation efficiency is improved.
Pressure release working condition: when an abnormal condition occurs in the interior of the housing 100, and the pressure in the interior of the housing 100 increases, the pressure release member moves from the first position to the second position, the pressure release member starts to release pressure, and the pressure release member discharges the gas in the connection passage 110 into the heat dissipation passage 106. Because the pressure release pieces are positioned at the second position, each pressure release piece is close to the air inlet 103 adjacent to the pressure release piece, and quick pressure release is facilitated.
When the pressure relief is about to end, the pressure relief piece returns to the first position, and at the moment, the distance between the pressure relief piece and the air inlet 103 adjacent to the pressure relief piece is far, so that the outside air is difficult to enter the connecting pipe 611 while the pressure relief piece still can be deflated. When the pressure release member is released, external air is prevented from entering the connecting channel 110 through the pressure release member due to the change of external air pressure, and the oxygen content in the battery mounting groove 101 is increased, so that fire is prevented. To improve the safety of the waterproof type solid-state battery module.
In this embodiment, two rotating shafts 104 are fixedly disposed in each ventilation slot 102, the two rotating shafts 104 are sequentially distributed along the first direction, each rotating shaft 104 is disposed along the second direction, and each heat dissipation component is disposed on one rotating shaft 104. In each heat dissipation assembly, the lower side of the upper heat dissipation plate 510 is rotatably disposed on the rotating shaft 104, a first torsion spring is disposed at the connection between the rotating shaft 104 and the upper heat dissipation plate 510, the upper side of the lower heat dissipation plate 510 is rotatably disposed on the rotating shaft 104, and a second torsion spring is disposed at the connection between the rotating shaft 104 and the lower heat dissipation plate 510. The heat dissipation plate 510 is maintained in a vertical arrangement by the first and second torsion springs.
In this embodiment, a lifting frame 610 is disposed in each expansion slot 5121, the lifting frame 610 can move up and down, and the expansion slots 5121 are always blocked in the process of moving up and down by the lifting frame 610. The pressure relief member includes a connection tube 611, a block 640, and a first spring 641. The connecting pipe 611 is fixedly arranged on the lifting frame 610, the connecting pipe 611 is arranged along the first direction, the connecting pipe 611 is communicated with the connecting channel 110 and the heat dissipation channel 106, one end of the connecting pipe 611, which is positioned in the connecting channel 110, is a first end, and one end of the connecting pipe 611, which is positioned in the heat dissipation channel 106, is a second end. The connecting pipe 611 is fixedly provided with a first connecting ring 614, and the first connecting ring 614 and the connecting pipe 611 are coaxially arranged. The plugging block 640 includes a first connection rod and a connection block, the first connection rod is disposed along the first direction, the first connection rod is slidably disposed in the first connection ring 614, and the connection block is fixedly disposed at one end of the first connection rod near the second end of the connection pipe 611. The first spring 641 is sleeved on the first connecting rod, and the first spring 641 connects the first connecting ring 614 and the connecting block.
When the air pressure in the connection channel 110 reaches a certain value, the elastic force of the first spring 641 on the plugging block 640 is overcome, the first connection rod is pushed to move towards the second end close to the connection pipe 611, the first connection rod does not plug the first connection ring 614 any more, and the air in the connection channel 110 is discharged from the first connection ring 614 to reduce the air pressure in the connection channel 110, and at this time, the pressure release member is in a pressure release state.
In this embodiment, the pressure relief piece further includes a stationary ring 630 and a turret 620. The fixing ring 630 is fixedly disposed in the connection pipe 611, and the fixing ring 630 and the first connection ring 614 are sequentially distributed along a direction from the first end to the second end of the connection pipe 611. The fixing ring 630 is provided with a plurality of first through holes, and the first through holes are distributed along the circumferential direction of the fixing ring 630.
The turret 620 includes a second connecting ring 621, a second connecting rod 622, and fan blades 623. The second connecting ring 621 and the second connecting rod 622 are both disposed along the axial direction of the connecting tube 611, the second connecting rod 622 is rotatably disposed in the fixing ring 630, the second connecting ring 621 is fixedly disposed at one end of the second connecting rod 622 near the first end of the connecting tube 611, and the second connecting ring 621 is disposed at one side of the fixing ring 630 near the second end of the connecting tube 611. The second connecting ring 621 is provided with a plurality of second through holes, and the second through holes are distributed along the circumferential direction of the second connecting ring 621, and each second through hole is communicated with one first through hole. The fan blade 623 is fixedly disposed at one end of the second connecting rod 622 near the second end of the connecting tube 611.
When the pressure relief piece is used for pressure relief, gas sequentially passes through the second through hole and the first through hole and is discharged into the heat dissipation channel 106 after passing through the fan blade 623, the gas blows the fan blade 623 to rotate, and the fan blade 623 drives the second connecting ring 621 to rotate through the second connecting rod 622 when rotating. The second connection ring 621 rotates to continuously change the overlapping area of the first through hole and the second through hole. When the overlapping area of the first through hole and the second through hole is large, more gas can pass through, so that two heat dissipation plates 510 adjacent along the first direction are far away from each other. When the overlapping area of the first through hole and the second through hole becomes smaller, less gas can pass through, and under the action of the first torsion spring and the second torsion spring, two heat dissipation plates 510 adjacent along the first direction are close to each other, so that two heat dissipation plates 510 adjacent along the first direction continuously swing.
In the present embodiment, along the up-down direction, a side of each of the lifters 610 close to the adjacent lifter 610 is a first side, and a side of each of the lifters 610 away from the adjacent lifter 610 is a second side. A second side of each of the lifters 610 is fixedly provided with a fixing plate 612.
Each heat dissipation assembly further comprises at least two driving units, each driving unit is arranged on one heat dissipation plate 510, the driving units are located in the connecting channels 110, and the driving units are located at the telescopic slots 5121. Each drive unit includes a flexible balloon 5124, a gas tube 513, a piston rod 514, and a second spring 515. The flexible bladder 5124 is fixedly disposed on the heat dissipation plate 510. The air pipe 513 is vertically arranged, one end of the air pipe 513 close to the first side of the lifting frame 610 is fixedly connected to the flexible air bag 5124, and the air pipe 513 is communicated with the flexible air bag 5124.
One end of piston rod 514 adjacent to a first side of elevator frame 610 is slidably disposed within air tube 513 and one end of piston rod 514 adjacent to a second side of elevator frame 610 is fixedly attached to retainer plate 612. Second spring 515 is disposed over piston rod 514, second spring 515 connects air tube 513 to retainer plate 612, and second spring 515 is a tension spring.
When an abnormal condition occurs in the housing 100 and the pressure in the housing 100 increases, the air pressure in the connecting channel 110 is greater than the air pressure in the flexible air bag 5124, so that the flexible air bag 5124 contracts, the piston rod 514 is pushed to move towards the second side of the lifting frame 610, the piston rod 514 stretches, the second spring 515 is stretched, the lifting frame 610 is further enabled to move along the direction from the first side to the second side, the lifting frame 610 drives the pressure release pieces to synchronously move when moving, two pressure release pieces in the same heat dissipation assembly are far away from each other, the pressure release pieces are located at the second position, and the pressure release pieces are close to the air inlet 103, so that quick pressure release is facilitated.
In this embodiment, the heat dissipation plate 510 is provided with a first limit groove 5122 and a second limit groove 5123, and the first limit groove 5122 and the second limit groove 5123 are sequentially distributed along a direction from the first side to the second side of the lifting frame 610. The lifting frame 610 is provided with a first sliding groove 613, the first sliding groove 613 is arranged along the second direction, a clamping block 650 and a third spring 651 are arranged in the first sliding groove 613, the clamping block 650 is slidably arranged in the first sliding groove 613, and the clamping block 650 can be slidably arranged in the first limiting groove 5122 or the second limiting groove 5123. The third spring 651 is fixedly coupled to the inner wall of the first sliding groove 613 and the clamping block 650.
When the latch 650 is in the first limit groove 5122, the pressure release member is in the first position, and when the latch 650 is in the second limit groove 5123, the pressure release member is in the second position.
In this embodiment, in each heat dissipation assembly, the upper side of the heat dissipation plate 510 located above and the lower side of the heat dissipation plate 510 located below are both provided with second sliding grooves, the second sliding grooves are arranged along the second direction, a sealing unit is provided in each second sliding groove, each sealing unit comprises a telescopic plate 511 and a plurality of fourth springs 516, the telescopic plate 511 is arranged along the second direction, one side of the telescopic plate 511 slides into the second sliding grooves up and down, a first sealing strip is fixedly provided on the other side of the telescopic plate 511, and the first sealing strip is arranged along the second direction and abuts against the inner wall of the ventilation groove 102. The fourth spring 516 connects the expansion plate 511 and the inner wall of the second chute. When the heat dissipation plate 510 swings, the expansion plate 511 moves up and down relative to the heat dissipation plate 510 under the action of the fourth spring 516, so that the first sealing strip always abuts against the inner wall of the ventilation groove 102, and tightness is ensured.
In this embodiment, the inner walls of the upper and lower sides of each connecting channel 110 are fixedly provided with a limiting plate 105, the limiting plate 105 is used for abutting against the expansion plate 511, and the limiting plate 105 is used for limiting the swinging angle of the heat dissipation plate 510.
In this embodiment, two sides of each heat dissipation plate 510 along the second direction are fixedly provided with a second sealing strip, and the second sealing strip is used to abut against the inner wall of the ventilation groove 102.
In this embodiment, a detachable cover plate 200 is disposed on the housing 100, the cover plate 200 is used for plugging the battery mounting groove 101, and a third sealing strip 300 is fixedly disposed on the cover plate 200, and the third sealing strip 300 abuts against the outer wall of the housing 100.
The working process comprises the following steps: a waterproof solid-state battery module includes a normal operation state and a pressure release operation state.
Normal operating state: the air pressure in the housing 100 is stable, the clamping block 650 is positioned in the first limiting groove 5122, and the pressure release piece is positioned in the first position. And the extension of piston rod 514 is minimized under the influence of second spring 515, flexible bladder 5124 is now in an inflated state.
Air freely flows from the heat dissipation channel 106, and the air in the shell 100 circulates in the battery mounting groove 101 and the connecting channel 110, and the air in the heat dissipation channel 106 dissipates the heat of the air in the shell 100 through the heat dissipation plate 510, and meanwhile, the wave-shaped heat dissipation plate 510 increases the circulation length of the air in the heat dissipation channel 106 due to the fact that the heat dissipation plate 510 is wave-shaped, so that the heat dissipation efficiency is improved.
Pressure release working condition: when an abnormal condition occurs in the interior of the housing 100, resulting in an increase in pressure in the interior of the housing 100, the air pressure in the connection channel 110 is greater than the air pressure in the flexible air bag 5124, so that the flexible air bag 5124 is contracted, thereby pushing the piston rod 514 to move toward the second side of the lifting frame 610, the piston rod 514 is stretched, the second spring 515 is stretched, and the stretching of the piston rod 514 causes the clamping block 650 to disengage from the first limiting groove 5122, thereby enabling the lifting frame 610 to move along the direction from the first side to the second side. The lifting frame 610 drives the clamping block 650 to come to the second limiting groove 5123, and the clamping block 650 enters the second limiting groove 5123, so that the lifting frame 610 does not move any more. When the lifting frame 610 moves, the pressure relief pieces are driven to synchronously move, so that two pressure relief pieces in the same heat dissipation assembly are far away from each other, the pressure relief pieces are in the second position, and the pressure relief pieces are close to the air inlet 103, thereby facilitating rapid pressure relief.
When the air pressure in the connection channel 110 reaches a certain value, the first connecting rod is pushed to move towards the second end close to the connecting pipe 611 against the elastic force of the first spring 641 on the plugging block 640, the first connecting rod does not plug the first connecting ring 614 any more, and the air in the connection channel 110 is discharged from the first connecting ring 614 to reduce the air pressure in the connection channel 110, and at this time, the pressure release piece releases the pressure.
When the gas in the connecting channel 110 is discharged outwards from the connecting pipe 611, since two pressure release pieces adjacent along the first direction in one ventilation groove 102 are oppositely arranged, the two heat dissipation plates 510 adjacent along the first direction are mutually far away by the gas sprayed by the two pressure release pieces, the force of mutually far away comprises that the gas sprayed by one pressure release piece pushes the heat dissipation plate 510 where the other pressure release piece is located to rotate, and the gas sprayed by the one pressure release piece acts on the heat dissipation plate 510 where the other pressure release piece is located, and the reaction force of the gas pushes the heat dissipation plate 510 where the reaction force of the gas is located to rotate. The maximum rotation angle of the heat dissipation plate 510 is that the heat dissipation plate 510 contacts the limiting plate 105.
When the pressure relief piece is used for pressure relief, gas sequentially passes through the second through hole and the first through hole and is discharged into the heat dissipation channel 106 after passing through the fan blade 623, the gas blows the fan blade 623 to rotate, and the fan blade 623 drives the second connecting ring 621 to rotate through the second connecting rod 622 when rotating. The second connection ring 621 rotates to continuously change the overlapping area of the first through hole and the second through hole. When the overlapping area of the first through hole and the second through hole is larger, more gas can pass through, so that two heat dissipation plates 510 adjacent along the first direction are far away from each other, and the first torsion spring and the second torsion spring rotate to store force. When the overlapping area of the first through hole and the second through hole becomes smaller, less gas can pass through, and under the action of the first torsion spring and the second torsion spring, two heat dissipation plates 510 adjacent along the first direction are close to each other, so that two heat dissipation plates 510 adjacent along the first direction continuously swing.
The continuous swing of the heat dissipation plate 510 can clean dust adhered on the heat dissipation plate 510, and the space volume between the heat dissipation channels 106 is changed through the continuous swing of the heat dissipation plate 510, so that the discharge of gas in the heat dissipation channels 106 is quickened, and the pressure release efficiency is further improved.
When the air pressure in the connecting channel 110 is gradually restored to the normal value, that is, the air pressure in the connecting channel 110 does not reach the normal value yet, and is slightly larger than the normal value. The flexible air bag 5124 gradually resets and expands, the first spring 641 gradually resets, and then drives the piston rod 514 to gradually reset, when the clamping block 650 is separated from the second limiting groove 5123, the piston rod 514 drives the lifting frame 610 to reset, so that the clamping block 650 returns to the first limiting groove 5122 again, and the pressure release piece returns to the first position, and at the moment, the pressure release piece is still in a pressure release state.
When the pressure release pieces start to release pressure, the gas in the connecting channel 110 needs to be discharged quickly, and each pressure release piece is close to the air inlet 103 adjacent to the pressure release piece, so that quick pressure release is facilitated. And at this time, the distance between the pressure release piece and the rotating shaft 104 is far, and the pressure release piece has a long force arm when spraying air, so that the pressure release piece can push the heat dissipation plate 510 to rotate when spraying air.
When the pressure relief is about to end, the pressure relief piece returns to the first position, and at the moment, the distance between the pressure relief piece and the air inlet 103 adjacent to the pressure relief piece is far, so that the outside air is difficult to enter the connecting pipe 611 while the pressure relief piece still can be deflated. When the pressure release member is released, external air is prevented from entering the connecting channel 110 through the pressure release member due to the change of external air pressure, and the oxygen content in the battery mounting groove 101 is increased, so that fire is prevented, and the safety of the waterproof solid-state battery module is improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. A waterproof solid-state battery module, characterized in that:
comprises a shell and two heat dissipation mechanisms; a battery mounting groove is formed in the shell, two ventilation grooves are formed in the shell, and a battery is arranged in the battery mounting groove; the two ventilation grooves are sequentially distributed along a first direction, the first direction is a horizontal direction, and each ventilation groove is vertically arranged and penetrates through the shell;
Each heat dissipation mechanism is arranged in one ventilation groove; each heat dissipation mechanism comprises two heat dissipation components, the two heat dissipation components are sequentially distributed along a first direction, the two heat dissipation components divide the ventilation groove into a heat dissipation channel and two connecting channels, the heat dissipation channel is positioned between the two heat dissipation components, the two connecting channels are arranged on two sides of the heat dissipation channel along the first direction and are communicated with the outside, the two ends of the heat dissipation channel along the vertical direction are air inlets, and the connecting channels are communicated with the battery mounting groove;
Each radiating component comprises two radiating plates and two pressure release pieces, the radiating plates are vertically arranged, the radiating plates are arranged along a second direction, the second direction is a horizontal direction, and the second direction is perpendicular to the first direction; the heat dissipation plates are wavy, the two heat dissipation plates are sequentially distributed along the up-down direction, a telescopic groove is formed in each heat dissipation plate, the telescopic grooves are vertically arranged, and each pressure release piece can be arranged in one telescopic groove in a vertically movable mode; the pressure release piece is used for discharging the gas of the connecting channel into the heat dissipation channel when the air pressure in the connecting channel is increased; the pressure release part is provided with a first position and a second position, wherein the first position of the pressure release part is the middle part of the heat dissipation channel in the vertical direction; the second position of the pressure release part is the end part of the heat dissipation channel in the vertical direction;
Two rotating shafts are fixedly arranged in each ventilation groove, the two rotating shafts are sequentially distributed along a first direction, each rotating shaft is arranged along a second direction, and each heat dissipation assembly is arranged on one rotating shaft; in each heat dissipation assembly, the lower side of the upper heat dissipation plate is rotationally arranged on a rotating shaft, a first torsion spring is arranged at the joint of the rotating shaft and the upper heat dissipation plate, the upper side of the lower heat dissipation plate is rotationally arranged on the rotating shaft, and a second torsion spring is arranged at the joint of the rotating shaft and the lower heat dissipation plate;
A lifting frame is arranged in each telescopic groove, and the lifting frames can move up and down; the pressure release piece comprises a connecting pipe, a plugging block and a first spring; the connecting pipe is fixedly arranged on the lifting frame, the connecting pipe is arranged along the first direction, the connecting pipe is communicated with the connecting channel and the heat dissipation channel, one end of the connecting pipe, which is positioned in the connecting channel, is a first end, and one end of the connecting pipe, which is positioned in the heat dissipation channel, is a second end; the connecting pipe is internally and fixedly provided with a first connecting ring, and the first connecting ring and the connecting pipe are coaxially arranged; the plugging block comprises a first connecting rod and a connecting block, wherein the first connecting rod is arranged along a first direction, the first connecting rod is slidably arranged in the first connecting ring, and the connecting block is fixedly arranged at one end, close to the second end of the connecting pipe, of the first connecting rod; the first spring is sleeved on the first connecting rod and is connected with the first connecting ring and the connecting block;
The pressure release part also comprises a fixed ring and a rotating frame; the fixed ring is fixedly arranged in the connecting pipe, and the fixed ring and the first connecting ring are sequentially distributed along the direction from the first end to the second end of the connecting pipe; the fixing ring is provided with a plurality of first through holes which are distributed along the circumferential direction of the fixing ring;
The rotating frame comprises a second connecting ring, a second connecting rod and fan blades; the second connecting ring and the second connecting rod are arranged along the axial direction of the connecting pipe, the second connecting rod is rotationally arranged in the fixing ring, the second connecting ring is fixedly arranged at one end of the second connecting rod, which is close to the first end of the connecting pipe, and the second connecting ring is positioned at one side of the fixing ring, which is close to the second end of the connecting pipe; the second connecting ring is provided with a plurality of second through holes, the second through holes are distributed along the circumferential direction of the second connecting ring, and each second through hole is communicated with one first through hole; the fan blade is fixedly arranged at one end of the second connecting rod, which is close to the second end of the connecting pipe;
along the up-down direction, one side of each lifting frame, which is close to the adjacent lifting frame, is a first side, and one side of each lifting frame, which is far away from the adjacent lifting frame, is a second side; a fixed plate is fixedly arranged on the second side of each lifting frame;
Each heat dissipation assembly further comprises at least two driving units, each driving unit is arranged on one heat dissipation plate, the driving units are positioned in the connecting channels, and the driving units are positioned at the telescopic grooves; each driving unit comprises a flexible air bag, an air pipe, a piston rod and a second spring; the flexible air bag is fixedly arranged on the heat dissipation plate; the air pipe is vertically arranged, one end of the air pipe, which is close to the first side of the lifting frame, is fixedly connected with the flexible air bag, and the air pipe is communicated with the flexible air bag;
One end of the piston rod, which is close to the first side of the lifting frame, is slidingly arranged in the air pipe, and one end of the piston rod, which is close to the second side of the lifting frame, is fixedly connected with the fixed plate; the second spring is sleeved on the piston rod and is connected with the air pipe and the fixed plate.
2. The waterproof solid-state battery module according to claim 1, wherein:
The heat dissipation plate is provided with a first limit groove and a second limit groove, and the first limit groove and the second limit groove are sequentially distributed along the direction from the first side to the second side of the lifting frame; the lifting frame is provided with a first chute, the first chute is arranged along a second direction, a clamping block and a third spring are arranged in the first chute, the clamping block is slidably arranged in the first chute, and the clamping block can be slidably arranged in the first limit groove or the second limit groove; the third spring is fixedly connected with the inner wall of the first chute and the clamping block.
3. The waterproof solid-state battery module according to claim 1, wherein:
In each heat dissipation assembly, the upper side of the upper heat dissipation plate and the lower side of the lower heat dissipation plate are respectively provided with a second chute, the second chutes are arranged along a second direction, each second chute is internally provided with a sealing unit, each sealing unit comprises a telescopic plate and a plurality of fourth springs, the telescopic plates are arranged along the second direction, one side of each telescopic plate slides up and down in the second chute, the other side of each telescopic plate is fixedly provided with a first sealing strip, the first sealing strips are arranged along the second direction, and the first sealing strips are propped against the inner wall of the ventilation groove; the fourth spring is connected with the expansion plate and the inner wall of the second chute.
4. A waterproof solid-state battery module according to claim 3, wherein:
Limiting plates are fixedly arranged on the inner walls of the upper side and the lower side of each connecting channel and used for propping against the telescopic plates.
5. The waterproof solid-state battery module according to claim 1, wherein:
And second sealing strips are fixedly arranged on two sides of each radiating plate along the second direction and used for propping against the inner wall of the ventilation groove.
6. The waterproof solid-state battery module according to claim 1, wherein:
Be provided with detachable apron on the shell, the apron is used for with battery mounting groove shutoff, fixedly on the apron be provided with the third sealing strip, the outer wall of third sealing strip and shell offsets.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410976857.0A CN118522998B (en) | 2024-07-22 | 2024-07-22 | Waterproof solid-state battery module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410976857.0A CN118522998B (en) | 2024-07-22 | 2024-07-22 | Waterproof solid-state battery module |
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| CN118522998B true CN118522998B (en) | 2024-09-17 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401294A (en) * | 2019-07-29 | 2019-11-01 | 刘子锋 | A kind of New energy automobile motor facilitating heat dissipation |
| CN117650312A (en) * | 2024-01-30 | 2024-03-05 | 深圳市科瑞隆科技有限公司 | High-temperature-resistant polymer lithium battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN220155700U (en) * | 2023-06-30 | 2023-12-08 | 惠州亿纬锂能股份有限公司 | Heat dissipation pressure relief device, battery module and battery pack |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401294A (en) * | 2019-07-29 | 2019-11-01 | 刘子锋 | A kind of New energy automobile motor facilitating heat dissipation |
| CN117650312A (en) * | 2024-01-30 | 2024-03-05 | 深圳市科瑞隆科技有限公司 | High-temperature-resistant polymer lithium battery pack |
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