CN220821819U - Integrated breathable explosion-proof structure in application battery system - Google Patents
Integrated breathable explosion-proof structure in application battery system Download PDFInfo
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- CN220821819U CN220821819U CN202322012901.XU CN202322012901U CN220821819U CN 220821819 U CN220821819 U CN 220821819U CN 202322012901 U CN202322012901 U CN 202322012901U CN 220821819 U CN220821819 U CN 220821819U
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- explosion
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- breathable film
- battery system
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- 239000012528 membrane Substances 0.000 claims abstract description 62
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000004880 explosion Methods 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 8
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 abstract description 27
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000009172 bursting Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004927 fusion Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model relates to an integrated breathable explosion-proof structure in an application battery system. Belongs to the technical field of batteries. The air-permeable explosion-proof structure mainly solves the problems of complex assembly, overhigh production cost and higher quality risk of the existing air-permeable explosion-proof structure. The main characteristics of the device are as follows: comprises a mounting flange matched with the upper cover of the battery pack, a ventilation membrane and an explosion-proof membrane; the mounting flange is provided with a circular through hole, one side end of the circular through hole is provided with a single round hole and is connected with an exhaust pipe joint, the other side end of the circular through hole is provided with mutually independent double holes, namely a breathable film mounting hole and an explosion-proof film mounting hole, and the positions of the breathable film mounting hole and the explosion-proof film mounting hole are respectively provided with a placing baffle wall; the breathable film and the explosion-proof film are respectively installed and fixed on the breathable film installation hole and the explosion-proof film installation hole. The utility model has the characteristics of improving the production efficiency of products, improving the quality qualification rate and reducing the cost, and is mainly used for the ventilation explosion-proof structure in the high-low voltage battery system of the automobile.
Description
Technical Field
The utility model belongs to the technical field of high-low voltage batteries of automobiles, and particularly relates to an integrated breathable explosion-proof structure applied to a high-low voltage battery system of an automobile.
Background
The conventional automobile high-low voltage battery system has the defects that the internal environment temperature and the external environment temperature of a battery pack have temperature difference when the battery works, so that the internal pressure and the external pressure are different, a ventilation device is needed for balancing the internal pressure and the external pressure difference, meanwhile, a large amount of gas is instantaneously generated in the battery pack due to uncontrollable factors such as thermal runaway of a battery core and the like, the conventional ventilation device cannot meet the exhaust requirement under the condition, and the explosion accident caused by excessive instantaneous gas is prevented by adding a corresponding explosion-proof device in the conventional product, so that the gas in the box body can be instantaneously discharged. At present, the conventional design of the ventilation explosion-proof device is two mounting modes: 1. the integral connection structure with the battery pack shell meets the requirements through the detail design and the external special structure of the connection structure, and the risks of unstable bursting pressure value, false bursting and the like exist at present; 2. independent assembled structure, when satisfying the explosion-proof function of ventilated membrane simultaneously, structural design is complicated, and spare part quantity is many, and the equipment is complicated, causes manufacturing cost too high, and the quality risk is higher.
Disclosure of Invention
The utility model aims to provide an integrated breathable explosion-proof structure in an applied battery system, which is used for improving the production efficiency of products, improving the quality qualification rate and reducing the cost, aiming at the problems of complex assembly, high production cost and high quality risk caused by excessive parts.
The technical scheme of the utility model is as follows: the utility model provides an integrated ventilative explosion-proof structure in application battery system, includes with battery package upper cover complex mounting flange, ventilated membrane and rupture membrane, characterized by: the middle part of the mounting flange is provided with a circular through hole, one side end of the circular through hole is provided with a single round hole and is connected with an exhaust pipe joint, the other side end of the circular through hole is provided with mutually independent double holes, namely a breathable film mounting hole and an explosion-proof film mounting hole, and the positions of the breathable film mounting hole and the explosion-proof film mounting hole are respectively provided with a placing baffle wall; the breathable film and the explosion-proof film are respectively installed and fixed on the breathable film installation hole and the explosion-proof film installation hole.
The mounting flange in the technical scheme of the utility model is a rectangular plate; the exhaust pipe joint and the rectangular plate are of an integrated structure.
The mounting flange in the technical scheme of the utility model is a rectangular plate; the exhaust pipe joint and the rectangular plate are of split type structure and are connected into a whole through assembly.
The breathable film mounting holes and the explosion-proof film mounting holes in the technical scheme of the utility model are circular holes; the breathable film is a circular breathable film; the explosion-proof membrane is a round explosion-proof membrane.
In the technical scheme of the utility model, the breathable film mounting holes and the explosion-proof film mounting holes are of a side-by-side double-spliced structure and are adjacently connected.
The breathable film mounting holes and the explosion-proof film mounting holes in the technical scheme of the utility model are semicircular holes; the breathable film is a semicircular breathable film; the explosion-proof membrane is a semicircular explosion-proof membrane.
In the technical scheme of the utility model, the breathable film mounting hole and the explosion-proof film mounting hole are of a side-by-side double-spliced structure to form a circle.
The breathable film mounting holes and the explosion-proof film mounting holes in the technical scheme of the utility model are special-shaped holes.
In the technical scheme of the utility model, the mounting flange and the upper cover are formed by secondary injection molding, or are assembled into a whole by screw fixation or welding and gluing.
The mounting flange in the technical scheme of the utility model is of a plastic structure; an integrated exhaust pipe joint is arranged at the single hole at one side end; welding ribs are arranged at the positions of the breathable film mounting hole and the explosion-proof film mounting hole at the other side end.
The beneficial effects of the utility model are as follows: the ventilation and explosion-proof structure which is assembled independently is removed, the stability of the explosion pressure value is improved, the risks of false explosion and unstable explosion are avoided, the specification and the size of the ventilation film and the specification and the size of the explosion-proof film can be adjusted according to the requirements and ventilation requirements, the manufacturing cost is greatly reduced, and the forming and processing processes of the ventilation and explosion-proof film are simplified.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
The utility model is mainly used for the ventilation explosion-proof structure in the high-low voltage battery system of the automobile.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.
FIG. 1 is a schematic view of the exterior of the combination of the upper cover and the exhaust pipe of the present utility model.
Fig. 2 is a schematic diagram showing the combination of the upper cover, the exhaust pipe, the ventilation membrane and the rupture membrane in embodiment 1 of the present utility model.
Fig. 3 is a schematic diagram showing the independent combination of the exhaust pipe, the ventilation film and the explosion-proof film in embodiment 1 of the present utility model.
Fig. 4 is a schematic view of a plastic structure of a mounting flange according to embodiment 1 of the present utility model.
Fig. 5 is a schematic diagram II of the independent combination of the exhaust pipe, the ventilation film and the explosion-proof film in embodiment 1 of the present utility model.
Fig. 6 is a schematic cross-sectional view A-A of fig. 4.
Fig. 7 is a schematic diagram III of the independent combination of the exhaust pipe, the ventilation film and the explosion-proof film in embodiment 1 of the present utility model.
Fig. 8 is a schematic cross-sectional view of B-B of fig. 7.
FIG. 9 is a schematic diagram showing the independent combination of the exhaust pipe, the ventilation membrane and the rupture disk in example 2 of the present utility model.
FIG. 10 is a schematic diagram showing the independent combination of the exhaust pipe, the ventilation membrane and the rupture disk in example 2 of the present utility model.
Reference numerals: 1-an upper cover, 2-an integrated ventilation and explosion-proof structure and 3-a circular ventilation film; 4-a circular explosion-proof membrane; 5-exhaust pipe joint; 6-a semicircular breathable film; 7-semi-circular explosion-proof membrane; 8-welding ribs; 9-placing a retaining wall; 10-mounting flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 8, an embodiment 1 of the present utility model, which uses an integrated gas permeable and explosion proof structure in a battery system, includes a gas permeable and explosion proof structure 2 composed of a mounting flange 10, a gas permeable membrane and an explosion proof membrane, wherein the mounting flange 10 is mated with a battery pack upper cover 1.
The mounting flange 10 is formed by injection molding of a rectangular plate, an exhaust pipe joint 5 on one side of the rectangular plate, and an air permeable membrane mounting hole and an explosion-proof membrane mounting hole on the other side of the rectangular plate. Four corners of the rectangular plate are rounded and matched with corresponding mounting holes of the battery pack upper cover 1. The plastic structure of the mounting flange is shown in fig. 4, a circular through hole is arranged in the middle of the mounting flange 10, one side end of the circular through hole is a single round hole and is connected with an exhaust pipe joint 5, and the other side end of the circular through hole is a double hole which is mutually independent, namely a breathable film mounting hole and an explosion-proof film mounting hole. An integral exhaust pipe joint 5 is arranged at a single round hole at one side end of the mounting flange 10, and welding ribs 8 and a placing baffle wall 9 are arranged at an air permeable membrane mounting hole and an explosion-proof membrane mounting hole at the other side end. The outer wall of the exhaust pipe joint 5 is provided with convex ribs, so that the exhaust pipe joint is convenient to connect with an exhaust pipe. The breathable film mounting holes and the explosion-proof film mounting holes are all round holes, are of a side-by-side double-spliced structure and are adjacently connected.
The ventilated membrane is a round ventilated membrane 3 which is matched with a placement baffle wall 9 of the ventilated membrane mounting hole. The explosion-proof membrane is a round explosion-proof membrane 4 and is matched with a placing baffle wall 9 of the explosion-proof membrane mounting hole. The circular ventilated membrane 3 and the circular explosion-proof membrane 4 are respectively assembled on the ventilated membrane mounting hole and the explosion-proof membrane mounting hole, and the assembling process can adopt fusion bonding modes such as hot melting, ultrasonic and the like, adhesive backing, glue bonding modes and the like.
The integrated ventilation and explosion-proof structure 2 in the normal ventilation state is shown in fig. 5 and 6, at this time, the internal pressure of the battery pack does not reach the critical value of the circular explosion-proof membrane 4, the explosion-proof membrane mounting hole is not ventilated, the inside and outside of the battery pack are ventilated through the circular ventilation membrane 3 of the ventilation membrane mounting hole, and the pressure difference between the inside and outside of the battery pack is balanced.
The integrated ventilation explosion-proof structure 2 is shown in fig. 7 and 8 when a large amount of gas is instantaneously generated in the battery pack due to uncontrollable factors such as thermal runaway of the battery core, at the moment, the internal pressure of the battery pack reaches above the critical value of the circular explosion-proof membrane 4, the circular explosion-proof membrane 4 is broken, most of gas in the battery pack passes through the explosion-proof membrane mounting holes, and a small part of gas passes through the circular ventilation membrane 3 of the ventilation membrane mounting holes to breathe, so that explosion accidents are avoided.
And placing the mounting flange as an insert in an upper cover die, and integrally injection-molding with the upper cover.
The mounting flange and the upper cover 1 can be assembled into a whole by screw fixation or welding or gluing.
The mounting flange and the upper cover 1 can be integrally injection molded, then the circular ventilated membrane 3 and the circular explosion-proof membrane 4 are assembled at the inner side of the upper cover assembly, and the assembling process can adopt fusion welding modes such as hot melting, ultrasonic and the like, or can adopt adhesive bonding modes such as back glue and glue.
The utility model reduces the risks of complex assembly, high production cost and high quality risk caused by excessive parts of an assembled structure, and simultaneously improves the risks of unstable bursting pressure value, false bursting and the like caused by the fact that the integral connecting structure meets the requirements through the detail design and the external special structure of the connecting structure, thereby improving the production efficiency of products, improving the quality qualification rate and reducing the cost. The utility model enables ventilation and blasting to form independent functional systems, and simultaneously can exhaust gas through the same exhaust port.
Example 2 of the present utility model, in which the ventilation explosion-proof structure is integrated in the battery system, is shown in fig. 9 and 10. Unlike example 1, the vent membrane mounting hole and the rupture membrane mounting hole are both semicircular holes, the vent membrane is a semicircular vent membrane 6, and the rupture membrane is a semicircular rupture membrane 7. The ventilated membrane mounting hole and the explosion-proof membrane mounting hole are of a side-by-side double-spliced structure to form a circle. The semicircular ventilated membrane 6 and the semicircular explosion-proof membrane 7 are respectively assembled on the ventilated membrane mounting hole and the placement baffle wall 9 of the explosion-proof membrane mounting hole, and the assembly process is the same as that of the embodiment 1.
The vent membrane mounting holes and the rupture membrane mounting holes can also be non-circular or non-semicircular special-shaped holes.
The exhaust pipe joint 5 and the mounting flange 10 may also be of a split type structure, and are integrally connected by assembly.
Therefore, the novel structure of the breathable and explosion-proof double-spliced battery system meets functional requirements through the breathable film when the battery pack normally works and needs internal and external pressure to balance air pressure. A large amount of gas is instantaneously generated due to uncontrollable factors such as thermal runaway, and the breathable film cannot meet the exhaust requirement under the condition, so that explosion accidents caused by excessive instantaneous gas are prevented, the explosion-proof film is exploded due to high internal pressure, and the functional requirement of instantaneous exhaust is met. The two functions can be met and mutually independent, and meanwhile, the two functions are connected through the same external exhaust pipe interface.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides an integrated ventilative explosion-proof structure in application battery system, includes with battery package upper cover (1) complex mounting flange (10), ventilated membrane and rupture membrane, characterized by: the middle part of the mounting flange (10) is provided with a circular through hole, one side end of the circular through hole is a single round hole and is connected with an exhaust pipe joint (5), the other side end of the circular through hole is a double hole which is mutually independent, and the circular through hole is respectively provided with a breathable film mounting hole and an explosion-proof film mounting hole, and the positions of the breathable film mounting hole and the explosion-proof film mounting hole are respectively provided with a placement baffle wall (9); the breathable film and the explosion-proof film are respectively installed and fixed on the breathable film installation hole and the explosion-proof film installation hole.
2. The integrated gas permeable and explosion proof structure for a battery system according to claim 1, wherein: the mounting flange (10) is a rectangular plate; the exhaust pipe joint (5) and the rectangular plate are of an integrated structure.
3. The integrated gas permeable and explosion proof structure for a battery system according to claim 1, wherein: the mounting flange (10) is a rectangular plate; the exhaust pipe joint (5) and the rectangular plate are of a split type structure and are connected into a whole through assembly.
4. An integrated gas permeable and explosion proof structure for a battery system according to claim 1, 2 or 3, wherein: the breathable film mounting holes and the explosion-proof film mounting holes are circular holes; the breathable film is a circular breathable film (3); the explosion-proof membrane is a round explosion-proof membrane (4).
5. The integrated gas permeable and explosion proof structure for a battery system according to claim 4, wherein: the breathable film mounting holes and the explosion-proof film mounting holes are of a side-by-side double-spliced structure and are adjacently connected.
6. An integrated gas permeable and explosion proof structure for a battery system according to claim 1, 2 or 3, wherein: the breathable film mounting holes and the explosion-proof film mounting holes are semicircular holes; the breathable film is a semicircular breathable film (6); the explosion-proof membrane is a semicircular explosion-proof membrane (7).
7. The integrated gas permeable and explosion proof structure for a battery system according to claim 6, wherein: the breathable film mounting holes and the explosion-proof film mounting holes are of a side-by-side double-spliced structure, so that a round shape is formed.
8. An integrated gas permeable and explosion proof structure for a battery system according to claim 1, 2 or 3, wherein: the breathable film mounting holes and the explosion-proof film mounting holes are special-shaped holes.
9. An integrated gas permeable and explosion proof structure for a battery system according to any one of claims 1-3, 5, 7, wherein: the mounting flange (10) and the upper cover (1) are formed by secondary injection molding, or the mounting flange (10) and the upper cover (1) are assembled into a whole through screw fixation or welding and gluing modes.
10. The integrated gas permeable and explosion proof structure for a battery system according to claim 1, wherein: the mounting flange (10) is of a plastic structure; an integrated exhaust pipe joint (5) is arranged at a single round hole at one side end of the round through hole; welding ribs (8) are arranged at the positions of the breathable film mounting hole and the explosion-proof film mounting hole at the other side end of the circular through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322012901.XU CN220821819U (en) | 2023-07-28 | 2023-07-28 | Integrated breathable explosion-proof structure in application battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322012901.XU CN220821819U (en) | 2023-07-28 | 2023-07-28 | Integrated breathable explosion-proof structure in application battery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220821819U true CN220821819U (en) | 2024-04-19 |
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ID=90709534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322012901.XU Active CN220821819U (en) | 2023-07-28 | 2023-07-28 | Integrated breathable explosion-proof structure in application battery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220821819U (en) |
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2023
- 2023-07-28 CN CN202322012901.XU patent/CN220821819U/en active Active
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