CN219696638U - Soft package battery core and directional explosion-proof structure thereof - Google Patents
Soft package battery core and directional explosion-proof structure thereof Download PDFInfo
- Publication number
- CN219696638U CN219696638U CN202223339154.2U CN202223339154U CN219696638U CN 219696638 U CN219696638 U CN 219696638U CN 202223339154 U CN202223339154 U CN 202223339154U CN 219696638 U CN219696638 U CN 219696638U
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- Prior art keywords
- battery cell
- soft
- fixing
- directional explosion
- directional
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- 238000004880 explosion Methods 0.000 claims abstract description 45
- 238000013022 venting Methods 0.000 claims abstract description 27
- 238000009413 insulation Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 7
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000007789 sealing Methods 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
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to the technical field of battery safety, and discloses a soft-package battery core and a directional explosion-discharging structure thereof, wherein the directional explosion-discharging structure comprises: the bracket is arranged on one side of the battery cell; the busbar is connected with the battery cell and is fixed on one side of the battery cell through the bracket; the fixing fastener is arranged on one side of the bracket and is used for fixing the bracket, one end of the fixing fastener is provided with a directional explosion nozzle, and the directional explosion nozzle is communicated with the battery cell; when the internal part of the soft-package battery core is in thermal runaway, heat and flame can be sprayed out from the directional explosion opening, so that flame and heat generated by the thermal runaway can be sprayed out only in one direction, directional explosion venting is realized, and the safety of the battery assembly and the electric vehicle is ensured.
Description
Technical Field
The utility model relates to the technical field of battery safety, in particular to a soft-package battery cell and a directional explosion-discharging structure thereof.
Background
At present, with the great popularization of new energy electric automobiles by the country, a great deal of demands are generated by an automobile power battery system, and the power battery and battery grouping industry is vigorously developed. The soft package battery is increasingly applied due to the advantages of high energy density, good safety, good power performance and the like. The soft package battery has complex grouping design and high grouping technical requirement, and is always restricted from popularization and application. At present, the protection of thermal runaway of the soft-packaged battery cell in the industry is a great difficulty, and the directional blowout of the soft-packaged battery cell in the thermal runaway cannot be realized by the existing technical scheme in the industry, so that the battery assembly has great potential safety hazard in the thermal runaway.
Disclosure of Invention
The purpose of the utility model is that: the soft-package battery core and the directional explosion-discharging structure thereof are provided, so that heat and flame can be sprayed out from a directional explosion port when thermal runaway occurs in the soft-package battery core, and flame and heat generated by the thermal runaway can be sprayed out only in one direction, thereby realizing directional explosion-discharging and ensuring the safety of a battery assembly and an electric vehicle.
In order to achieve the above object, the present utility model provides a directional explosion venting structure of a soft battery cell, including:
the bracket is arranged on one side of the battery cell;
the busbar is connected with the battery cell and is fixed on one side of the battery cell through a bracket;
the fixing fastener is arranged on one side of the support and is used for fixing the support, a directional explosion nozzle is arranged at one end, close to the battery cell, of the fixing fastener, and the directional explosion nozzle is communicated with the battery cell.
Compared with the prior art, the directional explosion venting structure of the soft-package battery cell has the beneficial effects that: through setting up the fixed busbar of support in electric core one side, make busbar and support integration integrative, it is fixed with fixed fastener to be fixed with the one end of support again, can accomplish the fixed of busbar through support and fixed fastener, be provided with directional blast orifice on the fixed fastener, directional blast orifice even electric core, heat and flame can be followed directional blast orifice blowout when making the inside of soft packet of electric core take place thermal runaway, flame and the heat that makes thermal runaway produce can only be through one direction blowout, thereby accomplish directional blast, the safety of battery pack and electric vehicle has been guaranteed.
According to the directional explosion venting structure of the soft-package battery cell, the cross ribs are arranged on the directional explosion vents, and the mica sheets are arranged on the cross ribs.
According to the directional explosion venting structure of the soft package battery core, one end of the support is provided with the first fixing part, one end, close to the first fixing part, of the busbar is provided with the second fixing part, and the second fixing part is matched with the first fixing part in size.
According to the directional explosion venting structure of the soft-package battery cell, the first fixing part comprises the protruding part protruding towards the direction of the busbar, the second fixing part comprises the bending part matched with the protruding part, and the protruding part extends into the bending part.
According to the directional explosion venting structure of the soft package battery core, the fixing fastener is provided with the third fixing part for fixing the support, the third fixing part comprises the first buckle, one end, close to the third fixing part, of the support is provided with the first through hole corresponding to the first buckle, and the first buckle is buckled in the first through hole.
According to the directional explosion venting structure of the soft package battery cell, a plurality of first buckles are arranged, and a plurality of first through holes corresponding to the first buckles in number are formed in the support.
According to the directional explosion venting structure of the soft-package battery cell, an insulating guard board is arranged on one side of the busbar, which faces away from the battery cell.
According to the directional explosion venting structure of the soft package battery core, the edge of the insulation guard plate is provided with the second buckle, the support is provided with the second through hole corresponding to the buckle, and the second buckle is buckled in the second through hole.
According to the directional explosion venting structure of the soft package battery core, the battery core through hole is formed in one end, close to the battery core, of the support, so that the battery core can be connected with the bus bar through the support.
The utility model also provides a soft-package battery cell, which comprises a shell, wherein the battery cell is arranged in the shell, and the two sides of the battery cell in the length direction are provided with the directional explosion-discharging structure in any one of the embodiments.
Compared with the prior art, the soft-package battery cell has the beneficial effects that: through the fixed busbar of support that sets up in the both sides of electric core, make busbar and support integrated integrative, it is fixed with fixed fastener to be fixed the one end of support again, can accomplish the fixed of busbar through support and fixed fastener, be provided with directional blast orifice on the fixed fastener, directional blast orifice even electric core, heat and flame can be followed directional blast orifice blowout when making the inside of soft packet of electric core take place thermal runaway, flame and the heat that makes thermal runaway produce can only be through one direction blowout, thereby accomplish directional blasting, the safety of battery pack and electric vehicle has been guaranteed.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
Fig. 1 is an explosion structure schematic diagram of a directional explosion venting structure of a soft-packaged battery cell according to an embodiment of the present utility model;
fig. 2 is a schematic cross-sectional structure of a directional explosion venting structure of a soft-packaged battery cell according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram at A in FIG. 2;
fig. 4 is a schematic structural diagram of a support of a directional explosion venting structure of a soft-packaged battery cell according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a busbar of a directional explosion venting structure of a soft-packaged battery cell according to an embodiment of the present utility model;
fig. 6 is a schematic structural view of a fixing fastener of the directional explosion venting structure of the soft-packaged battery cell according to the embodiment of the utility model;
fig. 7 is a schematic structural diagram of an insulating guard board of a directional explosion venting structure of a soft-packaged battery cell according to an embodiment of the present utility model;
in the figure, 1, a shell; 2. a battery cell; 3. a bracket; 31. a first fixing portion; 32. a first through hole; 33. a second through hole; 34. a cell through hole; 4. a busbar; 41. a second fixing portion; 5. a fixing fastener; 51. a third fixing portion; 52. a fixed port; 53. directional blast nozzle; 6. an insulating guard board; 61. and the second buckle.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
As shown in fig. 1, 2 and 3, a soft package battery cell of a preferred embodiment of the present utility model includes a housing 1, a battery cell 2 is disposed in the housing 1, and two sides of the battery cell 2 in a length direction are both provided with a directional explosion-discharging structure. The tops of the two sides of the shell 1 are provided with upward openings for directional blasting.
As shown in fig. 6, the directional explosion venting structure of the soft package battery cell of the preferred embodiment of the utility model comprises a bracket 3, a busbar 4 and a fixing fastener 5. The bus bar 4 is fixed through the support 3 arranged on two sides of the battery cell 2, the bus bar 4 and the support 3 are integrated, one end of the support 3 is fixed with the fixing fastener 5, the fixing of the bus bar 4 can be completed through the support 3 and the fixing fastener 5, the fixing fastener 5 is provided with the directional explosion nozzle 53, the directional explosion nozzle 53 is communicated with the battery cell 2, heat and flame can be sprayed out from the directional explosion nozzle 53 when thermal runaway occurs in the soft-packaged battery cell 2, flame and heat generated by the thermal runaway can only be sprayed out in one direction, and therefore directional explosion is achieved, and the safety of a battery assembly and an electric vehicle is guaranteed.
In some embodiments of the utility model, the bottom of the soft package battery core is bonded by adopting the heat-conducting structural adhesive as a cooling interface when being assembled, so that the bottom has enough strength, meanwhile, the module can be effectively fixed, and the soft package battery core can only be ejected from the top seal when in thermal runaway, thereby realizing directional explosion venting.
In some embodiments of the present utility model, the directional explosion nozzle 53 is provided with a cross rib, and the cross rib is provided with a mica sheet, which has a heat insulation protection function and can prevent the high-temperature flame from flowing backward to the current cell 2 at the first time after the thermal runaway of the adjacent battery packs.
In some embodiments of the present utility model, the bracket 3 is disposed on one side of the battery cell 2, the bracket 3 is made of an insulating material such as plastic, one end of the bracket 3 is provided with a first fixing portion 31, the first fixing portion 31 is used for fixing the bus bar 4, the bus bar 4 is disposed on one side of the bracket 3 facing away from the battery cell 2, and the battery cell 2 can pass through the bracket 3 to connect the bus bar 4; the bus bar 4 is provided with a second fixing part 41 near one end of the first fixing part 31, the second fixing part 41 is matched with the first fixing part 31 in size and corresponds to the first fixing part 31 in position, and the first fixing part 31 and the second fixing part 41 can be matched and connected to fix the bracket 3 and the bus bar 4 when the soft package battery core is assembled, so that the bus bar 4 and the bracket 3 are integrated into a whole; the fixing fastener 5 is arranged on one side of the bracket 3, specifically positioned at the top of two ends of the shell 1 in the length direction, and is also arranged above the busbar 4 and the bracket 3; the fixing fastener 5 is matched with the top edge of the shell 1 and can be fixed on the top of the shell 1. The fixing fastener 5 is provided with the third fixing part 51 to fix the bracket 3, and the fixing of the busbar 4 can be completed through the bracket 3 and the fixing fastener 5, so that the busbar 4 is ensured to be stable and reliable when being connected with the battery cell 2, the required fixing parts are reduced in a mode of integrating the busbar 4 on the bracket 3, the space required for fixing the busbar 4 is reduced, the energy density of the soft-package battery cell is further increased, and the advantages of the soft-package battery cell are maintained.
As shown in fig. 3, in some embodiments of the present utility model, the first fixing portion 31 includes a protruding portion protruding toward the bus bar 4, and the protruding portion is disposed above the battery cell 2 to avoid the connection position of the bus bar 4 and the battery cell 2. The second fixing portion 41 includes a bending portion matched with the protruding portion, the bending portion bends outwards away from the direction of the battery core 2 to form a space capable of accommodating the protruding portion to enter, the protruding portion stretches into the bending portion, the busbar 4 is limited in the vertical direction, the busbar 4 and the bracket 3 are integrated, and space and components required for fixing the busbar 4 are reduced.
As shown in fig. 6, in some embodiments of the present utility model, a fixing opening 52 with matched sizes of the tops of the bus bar 4 and the bracket 3 is provided on the fixing fastener 5, the tops of the bus bar 4 and the bracket 3 extend into the fixing opening 52, a third fixing portion 51 is provided on one side of the fixing opening 52, the third fixing portion 51 includes a first buckle, a first through hole 32 corresponding to the first buckle is provided at one end of the bracket 3 near the third fixing portion 51, the first buckle is fastened in the first through hole 32, movement of the tops of the bus bar 4 and the bracket 3 in a horizontal direction is limited, and the matching and fixing of the bus bar 4, the bracket 3 and the fixing fastener 5 are completed, so that the bus bar 4 and the bracket 3 are fixed in the fixing fastener 5.
In some embodiments of the present utility model, the plurality of first buckles are provided, and the plurality of first buckles cooperate to further enhance the fixing effect of the third fixing portion 51 and the bracket 3, and the top of the bracket 3 is also provided with the plurality of first through holes 32, and the number and positions of the first through holes 32 correspond to those of the first buckles. The first buckle may also be disposed on a different sidewall of the fixing hole 52, which is not specifically limited herein.
As shown in fig. 7, in some embodiments of the present utility model, an insulating guard plate 6 is disposed on a side of the busbar 4 facing away from the battery cell 2, the insulating guard plate 6 is disposed on an outermost side of the busbar 4 mounting structure, and in cooperation with the plastic bracket 3, insulation protection of two sides of the flexible battery cell in a length direction can be performed, and a bottom plate extending toward the battery cell 2 is disposed at a bottom of the insulating guard plate 6 for insulation and sealing of a bottom of the busbar 4 mounting structure.
As shown in fig. 7, in some embodiments of the present utility model, the edge of the insulation protection board 6 is provided with a second buckle 61, the bracket 3 is provided with a second through hole 33 corresponding to the buckle, and the second buckle 61 is buckled in the second through hole 33, so that the insulation protection board 6 is fixed on the bracket 3, and the movement of the insulation protection board 6 is limited. The second buckles 61 can be multiple, and the fixed effect of insulating backplate 6 has further been strengthened to a plurality of second buckles 61 combined action, has also offered a plurality of second through-holes 33 on the support 3, and the quantity and the position of second through-hole 33 and second buckle 61 all correspond. The second fastener 61 is arranged around the insulation guard plate 6, so that the stability of the insulation guard plate 6 is ensured.
As shown in fig. 4, in some embodiments of the present utility model, a through hole 34 is formed at an end of the bracket 3 near the battery cell 2, so that the battery cell 2 can be connected to the bus bar 4 through the bracket 3. The electric core through holes 34 comprise a plurality of strip-shaped through holes which are arranged in parallel, the number of the strip-shaped through holes is matched with that of the electric cores 2, and the width of the electric core through holes 34 is larger than that of the electric cores 2, so that the electric cores 2 are prevented from being contacted with the electric cores to influence the wires.
The bus bar 4 is fixed through the support 3 arranged on one side of the battery cell 2, the support 3 and the bus bar 4 are fixed through the second fixing part 41 on the bus bar 4 and the first fixing part on the support 3, so that the bus bar 4 and the support 3 are integrated into a whole, one end of the bus bar 4 is fixed with the third fixing part 51 on the fixing fastener 5, the fixing fastener 5 is also provided with a directional explosion opening, and the soft-package battery cell can only be ejected from the directional explosion opening when in thermal runaway.
In summary, the embodiment of the utility model provides a soft-package battery cell and an oriented explosion-discharging structure thereof, which can complete the fixation of a bus bar 4 through a bracket 3 and a fixing fastener 5, so that the bus bar 4 ensures the stability and reliability when being connected with a battery cell 2, the required fixing parts are reduced by integrating the bus bar 4 on the bracket 3, the space required for fixing the bus bar 4 is reduced, the energy density of the soft-package battery cell is further increased, and the advantages of the soft-package battery cell are maintained.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (10)
1. The utility model provides a directional explosive ordnance disposal structure of soft packet of electric core which characterized in that includes:
the bracket is arranged on one side of the battery cell;
the busbar is connected with the battery cell and is fixed on one side of the battery cell through the bracket;
the fixing fastener is arranged on one side of the support and is used for fixing the support, one end of the fixing fastener is provided with a directional explosion nozzle, and the directional explosion nozzle is communicated with the battery cell.
2. The directional explosion venting structure of a soft-packaged battery cell according to claim 1, wherein: the directional explosion nozzle is provided with a cross rib, and the cross rib is provided with a mica sheet.
3. The directional explosion venting structure of a soft-packaged battery cell according to claim 1, wherein: one end of the support is provided with a first fixing part, one end of the busbar, which is close to the first fixing part, is provided with a second fixing part, and the second fixing part is matched with the first fixing part in size.
4. The directional explosion venting structure of a soft-packaged battery cell according to claim 3, wherein: the first fixing part comprises a protruding part protruding towards the direction of the busbar, the second fixing part comprises a bending part matched with the protruding part, and the protruding part extends into the bending part.
5. The directional explosion venting structure of a soft-packaged battery cell according to claim 1, wherein: the fixing fastener is provided with a third fixing part for fixing the support, the third fixing part comprises a first buckle, a first through hole corresponding to the first buckle is formed in one end, close to the third fixing part, of the support, and the first buckle is buckled in the first through hole.
6. The directional explosion venting structure of a soft battery cell according to claim 5, wherein: the first buckles are provided with a plurality of first through holes, and the support is provided with a plurality of first through holes corresponding to the first buckles in number.
7. The directional explosion venting structure of a soft-packaged battery cell according to claim 1, wherein: and an insulating guard board is arranged on one side of the busbar, which is opposite to the battery cell.
8. The directional explosion venting structure of the soft-packaged battery cell according to claim 7, wherein: the edge of the insulation guard plate is provided with a second buckle, the support is provided with a second through hole corresponding to the buckle, and the second buckle is buckled in the second through hole.
9. The directional explosion venting structure of a soft-packaged battery cell according to claim 1, wherein: and one end of the support, which is close to the battery cell, is provided with a battery cell through hole so that the battery cell can be connected with the busbar through the support.
10. The utility model provides a soft packet of electric core which characterized in that: the device comprises a shell, wherein a battery cell is arranged in the shell, and the two sides of the battery cell in the length direction are provided with the directional explosion-proof structure as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223339154.2U CN219696638U (en) | 2022-12-13 | 2022-12-13 | Soft package battery core and directional explosion-proof structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223339154.2U CN219696638U (en) | 2022-12-13 | 2022-12-13 | Soft package battery core and directional explosion-proof structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219696638U true CN219696638U (en) | 2023-09-15 |
Family
ID=87937944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223339154.2U Active CN219696638U (en) | 2022-12-13 | 2022-12-13 | Soft package battery core and directional explosion-proof structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219696638U (en) |
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2022
- 2022-12-13 CN CN202223339154.2U patent/CN219696638U/en active Active
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| GR01 | Patent grant | ||
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| PP01 | Preservation of patent right |
Effective date of registration: 20240313 Granted publication date: 20230915 |