CN217158318U - Battery box thermal runaway protective structure, battery module and battery pack - Google Patents
Battery box thermal runaway protective structure, battery module and battery pack Download PDFInfo
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- CN217158318U CN217158318U CN202220257669.9U CN202220257669U CN217158318U CN 217158318 U CN217158318 U CN 217158318U CN 202220257669 U CN202220257669 U CN 202220257669U CN 217158318 U CN217158318 U CN 217158318U
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- 230000001681 protective effect Effects 0.000 title claims abstract description 14
- 230000017525 heat dissipation Effects 0.000 claims abstract description 143
- 238000003825 pressing Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 8
- 230000000670 limiting effect Effects 0.000 claims description 6
- 238000004378 air conditioning Methods 0.000 claims 1
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- 230000000694 effects Effects 0.000 abstract description 12
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- 230000009471 action Effects 0.000 description 11
- 230000005611 electricity Effects 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
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- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
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- 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 utility model relates to a battery box thermal runaway protective structure, a battery module and a battery pack, which comprises a plurality of heat insulating plates, a heat dissipation channel and a heat dissipation channel, wherein the heat insulating plates are respectively arranged between two adjacent electric cores; the check valve assembly is arranged corresponding to the battery cell explosion-proof valve of the battery cell and is respectively communicated with the heat dissipation channel and the battery cell explosion-proof valve, and the heat of the out-of-control battery cell is unidirectionally conveyed into the heat dissipation channel from the battery cell explosion-proof valve through the check valve assembly; exhaust assembly sets up on heat dissipation channel, is suitable for and leads to out of electric core module with the heat in the heat dissipation channel, the utility model discloses have effectually completely cut off high temperature material and high-temperature gas and conduct in other electric cores, influence all the other electric cores, avoided heat to stretch, influence all the other electric cores, effectual electric core out of control carries out the effect of protecting.
Description
Technical Field
The utility model relates to a power battery's technical field, concretely relates to battery box thermal runaway protective structure, battery mould and battery package.
Background
Along with the ever-increasing market share of electric automobile, battery system's safety also receives more and more attention, and how especially prevent that other electric core monomers that cause after electric core monomer thermal runaway from not taking place thermal runaway, become the focus of industry research.
The existing battery box stops the protection of the thermal runaway of the battery core on blocking and isolating the heat, relies on the quality of the battery core itself too much, or only adopts a thermal insulation material to block the battery core, namely, the thermal insulation material is arranged between the adjacent battery cores to isolate the heat of the adjacent battery cores, and high-temperature smoke or flame of the battery cores is output to the outside of the battery box through an exhaust passage, thereby protecting the thermal runaway of the battery core.
But in the in-service use process, when an electric core thermal runaway, when electric core spun high temperature flue gas or flame pass through the electric core top and conduct the heat in the exhaust passage, electric core spun high temperature flue gas or flame conduction in the exhaust passage out of control this moment, discharge battery box, but when the export of exhaust passage takes place to shelter from the effect that influences exhaust gas or flame, can have partial high temperature flue gas or flame to conduct other electric cores department from the junction of other electric core tops and exhaust passage this moment, thereby draw the diffusion of generating heat, make high temperature flue gas or flame influence all the other electric cores, consequently need design one kind can effectual control electric core out of control, avoid electric core out of control to influence the thermal runaway protective structure of all the other electric cores.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model discloses solve and have electric core spun high temperature flue gas or flame out of control to conduct all the other electric cores from the exhaust passage, cause heat to stretch, influence the technical problem of all the other electric cores to a battery box thermal runaway protective structure, battery module and battery package are provided.
A battery box thermal runaway prevention structure, comprising:
a plurality of heat insulation plates respectively arranged between two adjacent electric cores,
the heat dissipation channel is arranged on one side of the battery cell explosion-proof valve at the top of the battery cell, and the heat of the out-of-control battery cell is introduced into the heat dissipation channel;
the check valve assembly is arranged corresponding to the battery cell explosion-proof valve of the battery cell and is respectively communicated with the heat dissipation channel and the battery cell explosion-proof valve, and the heat of the out-of-control battery cell is unidirectionally conveyed into the heat dissipation channel from the battery cell explosion-proof valve through the check valve assembly;
and the exhaust assembly is arranged on the heat dissipation channel and is suitable for leading heat in the heat dissipation channel out of the battery cell module.
Further, the method also comprises the following steps:
the battery cores are arranged in the lower box body;
the lower box body and the upper box body are spliced to form a containing space for containing the battery cell;
the upper box body is internally provided with a heat dissipation plate which is of a box-packed structure with an opening at one end, one side of the opening of the heat dissipation plate is attached and sealed with the inner wall of the upper box body, the space between the heat dissipation plate and the inner wall of the upper box body is a heat dissipation channel, the exhaust assembly is arranged on the outer side wall of the upper box body and communicated with the heat dissipation channel in the heat dissipation plate, and the check valve assemblies are arranged on the heat dissipation plate and communicated with the heat dissipation channel in the space of the heat dissipation plate;
when the upper box body and the lower box body are spliced, the one-way valve component is correspondingly communicated with the battery cell explosion-proof valve of the battery cell.
Further, check valve subassembly includes the siphunculus, be provided with the check valve piece on the siphunculus one end, the check valve piece is connected on the siphunculus and contradict the laminating with siphunculus tip pipe wall, the siphunculus is equipped with check valve piece one end and stretches into in the heat dissipation channel and the heat dissipation channel intercommunication, when the heat of electric core out of control leads to in following the explosion-proof valve of electric core, from the siphunculus heat dissipation channel one end entering siphunculus dorsad, with the check valve piece top-open.
Furthermore, the siphunculus is provided with annular mounting panel on the lateral wall towards heat dissipation channel one end, the siphunculus passes through the mounting panel to be installed on the heating panel, the check valve piece is located heat dissipation channel.
Furthermore, the mounting plate is provided with a limiting ring at the position where the one-way valve block is located, and the one-way valve block is located in the limiting ring.
Furthermore, a pressing strip is arranged at each row of the battery cores on the lower box body, and the pressing strips are abutted against the battery cores.
Furthermore, an insulating gasket is arranged at the position where the pressing strip abuts against the battery cell, and covers the pressing strip.
Furthermore, a through hole is formed in the position, located at the battery cell explosion-proof valve of the battery cell, of the pressing strip, the check valve assembly is communicated with the battery cell explosion-proof valve through the through hole, an annular sealing element is arranged on the through pipe towards one side of the pressing strip, and when the through pipe is abutted against the pressing strip, the sealing element seals the connection position of the through pipe and the pressing strip.
An electric core module comprises a battery box thermal runaway protection structure.
A battery pack comprises a battery cell module.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a battery box thermal runaway protection structure, which comprises a plurality of heat insulation plates, wherein the heat insulation plates are respectively arranged between two adjacent electric cores, a heat dissipation channel is arranged on one side of an electric core explosion-proof valve at the top of the electric core, and the heat of the out-of-control electric core is introduced into the heat dissipation channel; the check valve assembly is arranged corresponding to the battery cell explosion-proof valve of the battery cell and is respectively communicated with the heat dissipation channel and the battery cell explosion-proof valve, and the heat of the out-of-control battery cell is unidirectionally conveyed into the heat dissipation channel from the battery cell explosion-proof valve through the check valve assembly; the exhaust assembly is arranged on the heat dissipation channel and is suitable for leading heat in the heat dissipation channel out of the battery cell module, and the heat insulation plate is used for cutting off the plurality of battery cells, thereby cutting off heat transmission when the battery cells are out of control, when the monomer battery cells are out of control, the battery cell explosion-proof valve on the battery cells is opened at the moment, the heat and high-temperature substances sprayed by the battery cells when the battery cells are out of control can push open the check valve assembly, thereby conveying the heat and the high-temperature substances into the heat dissipation channel, under the action of the heat dissipation channel, the heat and the high-temperature substances are directionally dredged, and the battery cell module is discharged through the exhaust assembly, after the heat enters the heat dissipation channel, the check valve assemblies at the rest battery cells are in a closed state, and because the check valve assemblies are arranged in a one way, the heat and the high-temperature substances can be only conveyed from one end of the battery cell explosion-proof valve to one end of the heat dissipation channel, therefore, heat and high-temperature substances in the heat dissipation channel cannot enter the intact electric core from the reverse reopening check valve assembly in the heat dissipation channel, so that the high-temperature substances and the high-temperature gas are effectively isolated from being conducted to other electric cores, other electric cores are influenced, heat spreading is avoided, other electric cores are influenced, and the electric core out of control is effectively protected.
2. The utility model provides a battery box thermal runaway protection structure, which also comprises a lower box body, and the battery cell is arranged in the lower box body; the lower box body and the upper box body are spliced to form a containing space for containing the battery cell; the upper box body is internally provided with a heat dissipation plate which is of a box-packed structure with an opening at one end, one side of the opening of the heat dissipation plate is attached and sealed with the inner wall of the upper box body, the space between the heat dissipation plate and the inner wall of the upper box body is a heat dissipation channel, the exhaust assembly is arranged on the outer side wall of the upper box body and communicated with the heat dissipation channel in the heat dissipation plate, and the check valve assemblies are arranged on the heat dissipation plate and communicated with the heat dissipation channel in the space of the heat dissipation plate; when the upper box body and the lower box body are spliced, the check valve component is correspondingly communicated with the battery cell explosion-proof valve of the battery cell, the heat dissipation plate is placed through the upper box body to form a heat dissipation channel, the check valve component is arranged on the heat dissipation plate on the upper box body, when the upper box body and the lower box body are spliced, the check valve component is communicated with the battery cell explosion-proof valve of the corresponding battery cell, heat and high-temperature substances of the out-of-control battery cell can enter the corresponding check valve component from the battery cell explosion-proof valve, the heat and the high-temperature substances are conveyed into the heat dissipation channel in a one-way manner under the action of the check valve component, the heat and the high-temperature substances are directionally dredged through the heat dissipation channel, the upper box body is discharged through the exhaust component, the heat and the high-temperature substances are prevented from influencing other battery cells, and meanwhile, the upper box body and the lower box body are arranged, so that the heat dissipation plate and the check valve component can be conveniently installed and replaced, when needing to be changed or maintained, the upper box body and the lower box body are directly separated, and the check valve component and the heat dissipation plate are exposed at the moment, so that the change is convenient.
3. The utility model provides a battery box thermal runaway protective structure, check valve subassembly includes the siphunculus, be provided with the check valve piece on the siphunculus one end, the check valve piece is connected on the siphunculus and contradicts with siphunculus tip pipe wall and laminates, the siphunculus is equipped with check valve piece one end and stretches into in the heat dissipation channel and heat dissipation channel intercommunication, when the heat of out-of-control electricity core is led out from the explosion-proof valve of electricity core, enter into the siphunculus from siphunculus dorsad heat dissipation channel one end, push away the check valve piece, when the electricity core is out of control, the heat and the high temperature material of the electricity core of quality control can break through electricity core explosion-proof valve at first, the heat and the high temperature material that break through electricity core explosion-proof valve can enter into the siphunculus, at this moment under the promotion of heat and high temperature material, the check valve piece that contradicts with the tip of siphunculus takes place to buckle to make the space produce between the tip of check valve piece and siphunculus, at the moment, heat and high-temperature substances are introduced into the heat dissipation channel under the action of the gap, the heat and the high-temperature substances are directionally dredged under the action of the heat dissipation channel, and the battery cell module is discharged from the exhaust assembly, and because the check valve plate is abutted and attached to one end, close to the heat dissipation channel, of the through pipe, when the high-temperature substances and the high-temperature gases are positioned in the heat dissipation channel, and because the exhaust effect of the exhaust assembly is poor, the dredging effect of the high-temperature substances and the high-temperature gases is poor, at the moment, part of the high-temperature gases and the substances are conveyed to the rest of check valve assemblies, and at the moment, the high-temperature gases and the substances have driving force on the check valve plate in the heat dissipation channel, but because the check valve plate is abutted and attached to the end, which is positioned at one end of the heat dissipation channel, the check valve plate cannot be bent towards the battery cell to generate the gap under the action of the end arm of the through pipe, so that the heat and the high-temperature substances cannot be introduced into the battery cell from the rest of the check valve assemblies at the battery cell, therefore, the influence of heat and high-temperature substances on other battery cells is further avoided, and the battery cells are effectively protected.
4. The utility model provides a battery box thermal runaway protective structure, the siphunculus is provided with annular mounting panel on heat dissipation channel one end lateral wall, the siphunculus passes through the mounting panel to be installed on the heating panel, the one-way valve block is located heat dissipation channel, through the setting of mounting panel to install the check valve subassembly on the heating panel.
5. The utility model provides a battery box thermal runaway protective structure, the mounting panel is located one-way valve block department and is provided with the spacing ring, one-way valve block is located the spacing ring, the setting of spacing ring, thereby can be further avoid one-way valve block to remove along the vertical direction of siphunculus axis, and can only follow the one-way buckling of axis direction of siphunculus, thereby heat and the lateral wall that high temperature material can't follow one-way valve block in the messenger radiating passage promote one-way valve block, make the end wall of one-way valve block and siphunculus break away from, thereby further improvement check valve subassembly's one-way transport effect, the heat and the high temperature material that make electric core department out of control can't influence all the other electricity cores.
6. The utility model provides a battery box thermal runaway protective structure, it all is provided with the layering to lie in every row of electric core department on the lower box, layering and electric core are contradicted, through the setting of layering to carry on spacingly to electric core, avoided electric core vibration from top to bottom in the heat insulating board, make to produce between electric core explosion-proof valve and the check valve subassembly and break away from, influence the heat of the electric core out of control and carry the effect in the check valve subassembly from electric core explosion-proof valve.
7. The utility model provides a battery box thermal runaway protective structure, layering and electric core department of contradicting are provided with insulating gasket, insulating gasket covers the layering, through insulating gasket's setting to make between layering and the electric core insulating, avoided the layering to influence electric core.
8. The utility model provides a battery box thermal runaway protective structure, the through-hole has been seted up to the electric core explosion-proof valve position department that lies in electric core on the layering, check valve subassembly passes through-hole and electric core explosion-proof valve intercommunication, the siphunculus is provided with annular sealing member towards layering one side, and when siphunculus and layering are contradicted, the sealing member is sealed the junction of siphunculus and layering, fixes a position through the through-hole and to check valve subassembly, and after the heat and the high temperature material of the electric core that the through-hole conveniently out of control broke through electric core explosion-proof valve simultaneously, in the order entering into check valve subassembly along with the through-hole, the setting of annular sealing member simultaneously to seal the junction of siphunculus and layering, thereby seal up the junction of siphunculus and layering, make heat and high temperature material can not spill from the junction of siphunculus and layering.
9. The utility model provides a battery pack, which comprises an electric core module, wherein the electric core module comprises a battery box thermal runaway protection structure, and is used for cutting off a plurality of electric cores through a thermal insulation plate, thereby cutting off heat propagation when the electric cores are out of control, when the single electric cores are out of control, an electric core explosion-proof valve on the electric cores is opened, when the heat and high-temperature substances when the electric cores are out of control are led out from the electric core explosion-proof valve, the heat and the high-temperature substances sprayed by the electric cores can push open a check valve component, thereby conveying the heat and the high-temperature substances into a heat dissipation channel, under the action of the heat dissipation channel, the heat and the high-temperature substances are directionally dredged, and the electric core module is discharged through an exhaust component, after the heat enters the heat dissipation channel, the check valve components at the rest electric cores are in a closed state, and because the check valve components are in one-way arrangement, the heat and the high-temperature substances can be only conveyed to one end of the heat dissipation channel from one end of the electric core valve, therefore, heat and high-temperature substances in the heat dissipation channel cannot enter the intact electric core from the reverse reopening check valve assembly in the heat dissipation channel, so that the high-temperature substances and the high-temperature gas are effectively isolated from being conducted to other electric cores, other electric cores are influenced, heat spreading is avoided, other electric cores are influenced, and the electric core out of control is effectively protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the thermal runaway protection structure of the battery box of the present invention;
fig. 2 is a schematic diagram of the inner wall structure of the lower case body of the thermal runaway protection structure of the battery case of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a schematic diagram of an internal structure of the battery box of the thermal runaway protection structure of the battery box of the present invention;
FIG. 5 is a sectional view of the internal structure of the upper box body according to the present invention;
fig. 6 is a schematic structural view of the check valve assembly of the present invention.
Description of reference numerals:
1. a heat insulation plate; 2. an electric core; 3. a heat dissipation channel; 4. a one-way valve assembly; 41. pipe passing; 42. a one-way valve plate; 43. mounting a plate; 44. a limiting ring; 5. an exhaust assembly; 6. a lower box body; 7. an upper box body; 8. layering; 9. an insulating spacer; 10. a through hole; 11. a seal member; 12. a heat sink.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Examples
Referring to fig. 1-6, the utility model provides a battery box thermal runaway protective structure, including a plurality of heat insulating boards 1, heat dissipation channel 3, check valve subassembly 4 and exhaust subassembly 5, wherein a plurality of heat insulating boards 1 set up respectively between two adjacent electric cores 2 here, heat dissipation channel 3 sets up electric core explosion-proof valve one side at electric core 2 top, the heat of electric core 2 out of control lets in heat dissipation channel 3, check valve subassembly 4 corresponds the setting with the electric core explosion-proof valve of electric core 2, communicate with heat dissipation channel 3 and electric core explosion-proof valve respectively, the heat of electric core 2 out of control passes through check valve subassembly 4 in from electric core explosion-proof valve one-way transport heat dissipation channel 3, exhaust subassembly 5 sets up on heat dissipation channel 3, be suitable for the heat in the heat dissipation channel 3 to lead out electric core module.
Cut off between a plurality of electric cores 2 through heat insulating board 1 from coming, thereby cut off the heat propagation when electric core 2 out of control, when monomer electric core 2 produces out of control, electric core explosion-proof valve on electric core 2 is opened this moment, heat and high temperature material when electric core 2 out of control lead out from electric core explosion-proof valve this moment electric core 2 spun heat and high temperature material can back down check valve subassembly 4, thereby carry heat and high temperature material in heat dissipation channel 3, under heat dissipation channel 3's effect, carry out directional dredging to heat and high temperature material, and discharge electric core module through exhaust subassembly 5, after the heat enters into heat dissipation channel 3, the check valve subassembly 4 of all the other electric cores 2 departments is in the closed condition, and because check valve subassembly 4 is one-way setting, heat and high temperature material can only be carried heat dissipation channel 3 one end from electric core explosion-proof valve one end, consequently there are heat and high temperature material in the heat dissipation channel 3 and can's reverse reopening one-way from heat dissipation channel 3 in reverse Valve module 4 enters 2 departments of intact electric core to effectual isolated high temperature material conducts in all the other electric cores 2 with high-temperature gas, influences all the other electric cores 2, has avoided heat to stretch, influences all the other electric cores 2, and effectual electric core 2 to out of control protects.
The battery cell box is characterized by further comprising a lower box body 6 and a lower box body 6, wherein the battery cells 2 are arranged in the lower box body 6, the upper box body 7 and the lower box body 6 are both of box-shaped structures with one ends open, the open ends of the upper box body 7 and the lower box body 6 are close to each other, and the lower box body 6 and the upper box body 7 are spliced to form a containing space for containing the battery cells 2; a heat dissipation plate 12 with an open end and a box-packed structure is arranged in the upper box body 7, when the air conditioner is installed, the open end of the heat dissipation plate 12 enters the upper box body 7 from the opening of the upper box body 7 until one side of the opening of the heat dissipation plate 12 is attached and sealed with the inner wall of the upper box body 7, the space between the heat dissipation plate 12 and the inner wall of the upper box body 7 is a heat dissipation channel 3, the exhaust assembly 5 is arranged on the outer side wall of the upper box body 7 and communicated with the heat dissipation channel 3 in the heat dissipation plate 12, and the check valve assemblies 4 are all arranged on the heat dissipation plate 12 and communicated with the heat dissipation channel 3 in the space of the heat dissipation plate 12; when the upper box body 7 and the lower box body 6 are spliced, the check valve component 4 is correspondingly communicated with the battery cell explosion-proof valve of the battery cell 2, the heat dissipation channel 3 is formed by placing the heat dissipation plate 12 on the upper box body 7, at the moment, the check valve component 4 is arranged on the heat dissipation plate 12 on the upper box body 7, when the upper box body 7 is spliced with the lower box body 6, at the moment, the check valve component 4 is communicated with the battery cell explosion-proof valve of the corresponding battery cell 2, at the moment, heat and high-temperature substances of the out-of-control battery cell 2 can enter the corresponding check valve component 4 from the battery cell explosion-proof valve, under the action of the check valve component 4, the heat and the high-temperature substances are conveyed into the heat dissipation channel 3 in a one-way mode, then the heat and the high-temperature substances are directionally dredged through the heat dissipation channel 3, the upper box body 7 is discharged out of the exhaust component 5, the influence of the heat and the high-temperature substances on the other battery cells 2 is avoided, and the upper box body 7 and the lower box body 6 are arranged at the same time, therefore, the heat dissipation plate 12 and the check valve assembly 4 can be conveniently installed and replaced, when replacement or maintenance is needed, the upper box body 7 and the lower box body 6 are directly separated, and the check valve assembly 4 and the heat dissipation plate 12 are exposed at the moment, so that replacement is convenient.
Simultaneously exhaust assembly 5 sets up to the box relief valve, the box relief valve sets up on the lateral wall of last box 7, the position of the heat dissipation channel 3 in box relief valve and the last box 7 corresponds simultaneously, thereby make box relief valve and heat dissipation channel 3 intercommunication, after in heat and high temperature material and the gaseous orientation of out of control dredges the heat dissipation channel 3, heat and high temperature material and the gaseous heat and the discharge of box 7 under the effect of box relief valve that the heat dissipation leads to in this moment, thereby discharge heat and the high temperature material of electric core 2 out of control, the heat and the high temperature material of electric core 2 out of control have been avoided influencing all the other electric cores 2 that do not out of control.
Specifically, the check valve assembly 4 includes a through pipe 41, one end of the through pipe 41 is provided with a check valve plate 42, the check valve plate 42 is connected to the through pipe 41 and is abutted against and attached to a pipe wall at the end of the through pipe 41, the through pipe 41 is provided with one end of the check valve plate 42 which extends into the heat dissipation channel 3 and is communicated with the heat dissipation channel 3, when the heat of the out-of-control battery cell 2 is discharged from the battery cell explosion-proof valve, the heat of the out-of-control battery cell 2 and the high temperature substance can firstly burst the battery cell explosion-proof valve, the heat of the burst battery cell explosion-proof valve and the high temperature substance can enter the through pipe 41, at this time, the check valve plate 42 abutted against and attached to the end of the through pipe 41 is bent under the pushing of the heat and the high temperature substance, so that a gap is generated between the check valve plate 42 and the end of the through pipe 41, at this moment, heat and high-temperature substances are introduced into the heat dissipation channel 3 under the action of the gap, directional dredging is carried out under the action of the heat dissipation channel 3, and the battery cell module is discharged from the exhaust component 5, and because the check valve plate 42 is abutted and attached to one end of the through pipe 41 close to the heat dissipation channel 3, when the high-temperature substances and the high-temperature gases are positioned in the heat dissipation channel 3, because the exhaust effect of the exhaust component 5 is poor, the dredging effect of the high-temperature substances and the high-temperature gases is not good, part of the high-temperature gases and the substances can be conveyed to the rest check valve components 4, at this moment, the high-temperature gases and the substances can push the check valve plate 42 in the heat dissipation channel 3, but because the check valve plate 42 is abutted and attached to the end part of the through pipe 41 positioned at one end of the heat dissipation channel 3, the check valve plate 42 cannot be bent towards the battery cell 2 direction to generate the gap under the action of the end arm of the through pipe 41, therefore, heat and high-temperature substances cannot be introduced into the battery cell 2 from the check valve assemblies 4 at the rest of the battery cells 2, so that the influence of the heat and the high-temperature substances on the rest of the battery cells 2 is further avoided, and the battery cells 2 are effectively protected.
Simultaneously siphunculus 41 is provided with annular mounting panel 43 on the lateral wall of heat dissipation channel 3 one end, siphunculus 41 passes through mounting panel 43 demountable installation and is in on the heating panel 12, the check valve piece 42 extends out the pole of connection on the lateral wall of mounting panel 43, the tip that check valve piece 42 extended out the pole passes through the bolt demountable connection on mounting panel 43, check valve piece 42 is located heat dissipation channel 3, through the setting of mounting panel 43 to install check valve subassembly 4 on heating panel 12.
The mounting panel 43 is located check valve piece 42 department and is provided with spacing ring 44, leave the pole that the breach convenience extended through check valve piece 42 on the spacing ring 44 lateral wall, make check valve piece 42 can follow siphunculus 41 axis direction and buckle, check valve piece 42 is located spacing ring 44, the setting of spacing ring 44 to can be further avoid the vertical direction removal of check valve piece 42 along siphunculus 41 axis, and can only follow the one-way buckling of siphunculus 41 axis direction, thereby heat and the high temperature material in the messenger radiating passage 3 can't come to promote check valve piece 42 from check valve piece 42's lateral wall, make the end wall of check valve piece 42 and siphunculus 41 break away from, thereby further improvement check valve subassembly 4's unidirectional transport effect, the heat and the high temperature material that make electric core 2 department out of control can's unable all the other electric cores 2 of influence.
All be provided with layering 8 in every row of electric core 2 department on box 6 down, the quantity of layering 8 is decided according to the row number of electric core 2, layering 8 and electric core 2 are contradicted, through the setting of layering 8 to carry on spacingly to electric core 2, avoided electric core 2 to vibrate from top to bottom in heat insulating board 1, make to produce between electric core explosion-proof valve and the check valve subassembly 4 and break away from, influence the effect in electric core 2's of out of control heat is carried the check valve subassembly 4 from electric core explosion-proof valve.
The position where the pressing strip 8 and the battery cell 2 are abutted is provided with an insulating gasket 9, the insulating gasket 9 covers the pressing strip 8 and is arranged through the insulating gasket 9, so that the pressing strip 8 and the battery cell 2 are insulated from each other, and the influence of the pressing strip 8 on the battery cell 2 is avoided.
The through hole 10 is formed in the position, located at the electric core explosion-proof valve position, of the electric core 2 on the pressing strip 8, the check valve assembly 4 is communicated with the electric core explosion-proof valve through the through hole 10, an annular sealing piece 11 is arranged on one side, facing the pressing strip 8, of the through pipe 41, the sealing piece 11 is a heat-insulating sealing gasket, when the through pipe 41 is abutted to the pressing strip 8, the sealing piece 11 seals the connection position of the through pipe 41 and the pressing strip 8, the check valve assembly 4 is positioned through the through hole 10, meanwhile, the through hole 10 facilitates the heat and high-temperature substances of the out-of-control electric core 2 to break through the electric core explosion-proof valve and then enter the check valve assembly 4 along the through hole 10, and meanwhile, the annular sealing piece 11 is arranged, so that the connection position of the through pipe 41 and the pressing strip 8 is sealed, and the heat and the high-temperature substances cannot leak out from the connection position of the through pipe 41 and the pressing strip 8.
Example 2
Referring to fig. 1 to 6, the embodiment provides a battery pack, which includes a battery cell module, where the battery cell module includes a battery box thermal runaway protection structure, and cuts off a plurality of battery cells 2 through a thermal insulation board 1, so as to cut off heat propagation when the battery cells 2 are out of control, when a single battery cell 2 is out of control, a battery cell explosion-proof valve on the battery cell 2 is opened, heat and a high-temperature substance when the battery cell 2 is out of control are discharged from the battery cell explosion-proof valve, and the heat and the high-temperature substance sprayed from the battery cell 2 push open a check valve assembly 4, so as to convey the heat and the high-temperature substance into a heat dissipation channel 3, and under the action of the heat dissipation channel 3, the heat and the high-temperature substance are directionally dredged, and discharged from the battery cell module through an exhaust assembly 5, and after the heat enters the heat dissipation channel 3, the check valve assemblies 4 at the rest of the battery cells 2 are in a closed state, and because check valve subassembly 4 is one-way setting, heat and high temperature material can only be carried heat dissipation channel 3 one end from electric core explosion-proof valve one end, consequently, heat and high temperature material in having heat dissipation channel 3 can't go into intact electric core 2 department from reverse reopening check valve subassembly 4 in heat dissipation channel 3, thereby effectual isolated high temperature material and high temperature gas conduct all the other electric cores 2 in, influence all the other electric cores 2, the heat spreading has been avoided, influence all the other electric cores 2, effectually protect electric core 2 out of control.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A battery box thermal runaway protective structure is characterized by comprising:
a plurality of heat insulation plates (1) which are respectively arranged between two adjacent electric cores (2),
the heat dissipation channel (3) is arranged on one side of the battery cell explosion-proof valve at the top of the battery cell (2), and the heat of the out-of-control battery cell (2) is introduced into the heat dissipation channel (3);
the check valve assembly (4) is arranged corresponding to the battery cell explosion-proof valve of the battery cell (2) and is respectively communicated with the heat dissipation channel (3) and the battery cell explosion-proof valve, and heat of the out-of-control battery cell (2) is unidirectionally conveyed into the heat dissipation channel (3) from the battery cell explosion-proof valve through the check valve assembly (4);
and the exhaust assembly (5) is arranged on the heat dissipation channel (3) and is suitable for leading heat in the heat dissipation channel (3) out of the battery cell module.
2. The battery box thermal runaway protection structure of claim 1, further comprising:
the battery cells (2) are arranged in the lower box body (6);
the lower box body (6) and the upper box body (7) are spliced to form a containing space for containing the battery cell (2);
the air-conditioning box is characterized in that a heat dissipation plate (12) with an open end and a box-packed structure is arranged in the upper box body (7), one open side of the heat dissipation plate (12) is attached and sealed with the inner wall of the upper box body (7), a space between the heat dissipation plate (12) and the inner wall of the upper box body (7) is a heat dissipation channel (3), the exhaust assembly (5) is arranged on the outer side wall of the upper box body (7) and communicated with the heat dissipation channel (3) in the heat dissipation plate (12), and the check valve assemblies (4) are arranged on the heat dissipation plate (12) and communicated with the heat dissipation channel (3) in the space of the heat dissipation plate (12);
when the upper box body (7) and the lower box body (6) are spliced, the one-way valve assembly (4) is correspondingly communicated with the battery cell explosion-proof valve of the battery cell (2).
3. The battery box thermal runaway protection structure of claim 2, characterized in that the check valve assembly (4) comprises a through pipe (41), one end of the through pipe (41) is provided with a check valve plate (42), the check valve plate (42) is connected to the through pipe (41) and is abutted to the pipe wall at the end of the through pipe (41), the through pipe (41) is provided with one end of the check valve plate (42), the one end of the check valve plate (42) extends into the heat dissipation channel (3) to be communicated with the heat dissipation channel (3), when the heat of the runaway battery cell (2) is discharged from the battery cell explosion-proof valve, one end of the through pipe (41) back to the heat dissipation channel (3) enters the through pipe (41), and the check valve plate (42) is pushed open.
4. The battery box thermal runaway protection structure according to claim 3, characterized in that an annular mounting plate (43) is arranged on a side wall of one end of the through pipe (41) facing the heat dissipation channel (3), the through pipe (41) is mounted on the heat dissipation plate (12) through the mounting plate (43), and the one-way valve sheet (42) is located in the heat dissipation channel (3).
5. The battery box thermal runaway protection structure according to claim 4, wherein a limiting ring (44) is arranged on the mounting plate (43) at the position of the one-way valve plate (42), and the one-way valve plate (42) is arranged in the limiting ring (44).
6. The battery box thermal runaway protection structure according to claim 3, characterized in that a pressing strip (8) is arranged on the lower box body (6) at each row of the battery cores (2), and the pressing strip (8) is abutted against the battery cores (2).
7. The battery box thermal runaway protection structure according to claim 6, characterized in that an insulating gasket (9) is arranged at the position where the pressing strip (8) and the battery core (2) are abutted, and the insulating gasket (9) covers the pressing strip (8).
8. The battery box thermal runaway protection structure according to claim 7, wherein a through hole (10) is formed in the pressing bar (8) at the position of the battery cell explosion-proof valve of the battery cell (2), the check valve assembly (4) is communicated with the battery cell explosion-proof valve through the through hole (10), an annular sealing member (11) is arranged on one side of the through pipe (41) facing the pressing bar (8), and when the through pipe (41) abuts against the pressing bar (8), the sealing member (11) seals the joint of the through pipe (41) and the pressing bar (8).
9. A battery cell module, characterized by comprising the battery box thermal runaway protection structure of any one of claims 1 to 8.
10. A battery pack, comprising the cell module of claim 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220257669.9U CN217158318U (en) | 2022-02-08 | 2022-02-08 | Battery box thermal runaway protective structure, battery module and battery pack |
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| CN202220257669.9U CN217158318U (en) | 2022-02-08 | 2022-02-08 | Battery box thermal runaway protective structure, battery module and battery pack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116359748A (en) * | 2023-05-31 | 2023-06-30 | 苏州精控能源科技有限公司 | Thermal runaway simulation test method and device for cylindrical lithium battery |
| CN116359759A (en) * | 2023-05-30 | 2023-06-30 | 苏州精控能源科技有限公司 | Large-scale energy storage battery pack thermal runaway detection device, method and storage medium |
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2022
- 2022-02-08 CN CN202220257669.9U patent/CN217158318U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116359759A (en) * | 2023-05-30 | 2023-06-30 | 苏州精控能源科技有限公司 | Large-scale energy storage battery pack thermal runaway detection device, method and storage medium |
| CN116359759B (en) * | 2023-05-30 | 2023-08-01 | 苏州精控能源科技有限公司 | Large-scale energy storage battery pack thermal runaway detection device, method and storage medium |
| CN116359748A (en) * | 2023-05-31 | 2023-06-30 | 苏州精控能源科技有限公司 | Thermal runaway simulation test method and device for cylindrical lithium battery |
| CN116359748B (en) * | 2023-05-31 | 2023-08-01 | 苏州精控能源科技有限公司 | Thermal runaway simulation test method and device for cylindrical lithium battery |
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Address after: 215129 West of Building 28, No. 2, Mount Taishan Road, Suzhou High tech Zone, Suzhou, Jiangsu Province Patentee after: Suzhou Jingkong Energy Technology Co.,Ltd. Address before: 215129 West, building 28, Hefeng Industrial Park, No.2, Taishan Road, high tech Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU JK ENERGY Ltd. |
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