CN212380484U - End plate structure of lightweight battery module - Google Patents
End plate structure of lightweight battery module Download PDFInfo
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- CN212380484U CN212380484U CN202020271129.7U CN202020271129U CN212380484U CN 212380484 U CN212380484 U CN 212380484U CN 202020271129 U CN202020271129 U CN 202020271129U CN 212380484 U CN212380484 U CN 212380484U
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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
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Abstract
The utility model discloses an end plate structure of lightweight battery module, its characterized in that: the module end plate comprises a battery module, the module end plate comprises an inner plate and an outer plate, an energy-absorbing sandwich layer is arranged between the inner plate and the outer plate, the energy-absorbing sandwich layer is of a honeycomb array structure, and the axis of a honeycomb hole of a honeycomb array of the energy-absorbing sandwich layer is perpendicular to the inner plate and the outer plate; a first end and a second end are respectively arranged at two ends of the energy-absorbing sandwich layer; the utility model discloses an adopt sandwich design, hot pressing technology shaping, high strength aluminium is chooseed for use to terminal surface from top to bottom, and middle sandwich adopts aluminium honeycomb, has also increased structural rigidity when lightening weight, and the structure increase end contact surface of both ends end ensures joint strength.
Description
Technical Field
The utility model belongs to battery module structure field.
Background
The end plate in the prior pack has the problems of complex structure and heavy weight; and the battery cell among the battery module can take place the inflation after using a period, consequently the end plate in its pack needs be can bear huge expansion load and non-deformable's energy-absorbing structure, but also will control its self weight.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the deficiencies in the prior art, the utility model provides an end plate structure of lightweight battery module that can bear huge expansion load.
The technical scheme is as follows: in order to achieve the above object, the utility model discloses an end plate structure of lightweight battery module, its characterized in that: the module end plate comprises a battery module, the module end plate comprises an inner plate and an outer plate, an energy-absorbing sandwich layer is arranged between the inner plate and the outer plate, the energy-absorbing sandwich layer is of a honeycomb array structure, and the axis of a honeycomb hole of a honeycomb array of the energy-absorbing sandwich layer is perpendicular to the inner plate and the outer plate; and a first end and a second end are respectively arranged at two ends of the energy-absorbing sandwich layer.
Furthermore, the sandwich layer is an aluminum alloy structure formed by integrating a honeycomb array structure and hot pressing, and the honeycomb holes are regular-hexagon honeycomb holes.
Furthermore, the battery module comprises two module end plates which are respectively a first module end plate and a second module end plate; the battery module further comprises a first module side plate and a second module side plate; first module end plate, first module curb plate, second module end plate and second module curb plate interconnect constitute rectangular frame structure, the inboard that frame structure encloses forms electric core restraint storehouse.
Furthermore, the battery pack also comprises a plurality of block-shaped battery cores, and the block-shaped battery cores are tightly overlapped in the battery core constraint bin to form the battery core pack.
Further, each block-shaped battery cell in the battery cell group is parallel to the first module end plate and the second module end plate; the block-shaped electric cores at the two ends of the electric core group are a head block-shaped electric core and a tail block-shaped electric core respectively; the first block-shaped battery cell is tightly attached to the inner plate of the first module end plate, and the last block-shaped battery cell is tightly attached to the inner plate of the second module end plate.
Furthermore, the two ends of the inner layer plate and the two ends of the outer layer plate are respectively lapped on the first end and the second end.
Further, the first end and the second end are both vertical columnar structures; the energy-absorbing sandwich layer comprises an inner layer plate, an outer layer plate and a first end/second end, wherein the first end/second end is close to one end of the energy-absorbing sandwich layer, two sides of the first end/second end are respectively provided with a first lap joint gap and a second lap joint gap, two ends of the inner layer plate are respectively lapped on the first lap joint gaps of the first end and the second end, and two ends of the outer layer plate are respectively lapped on the second lap joint gaps of the first end and the second end.
Further, the first end head and the second end head are provided with thread locking holes along the axis direction; the two ends of the first module side plate and the second module side plate are both provided with vertical flanges, and the vertical flanges are in lap joint with sinking surfaces at two ends of the outer layer plate.
Has the advantages that: the utility model adopts sandwich design and hot-press technology molding, the upper and lower end faces are made of high-strength aluminum, the middle sandwich is made of aluminum honeycomb, the structural rigidity is increased while the weight is reduced, and the end contact surfaces are increased by the structures of the ends at both ends, so as to ensure the connection strength; the mutually connected aluminum honeycomb cores are like a plurality of I-shaped steel, and the core layers are distributed and fixed in the whole plate surface, so that the plate is more stable, and the end surface bearing capacity is better than that of an extruded section; in the application of the battery module, when the battery cell expands, the honeycomb aluminum structure can disperse and bear the pressure from the panel direction, so that the stress of the panel is uniform, the energy is effectively absorbed, the expansion of the battery cell is inhibited, and the stability of the electrical property of the battery cell is improved and the service life of the battery cell is prolonged; compared with the traditional mode of extruding the end plate into the aluminum profile, the die set has the advantages of lighter weight, stronger rigidity, better energy absorption effect and lower cost.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a battery module;
FIG. 2 is a perspective view of FIG. 1;
FIG. 3 is a schematic structural view of the electric core assembly shown in FIG. 2;
FIG. 4 is a schematic structural view of a rectangular frame structure formed by connecting a first module end plate, a first module side plate, a second module end plate and a second module side plate to each other on the basis of FIG. 3 after disassembly;
FIG. 5 is a schematic view of a first structure of a module header;
FIG. 6 is a second schematic view of a module end plate;
fig. 7 is an exploded view of the module end plate removal.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The end plate structure of the light-weight battery module shown in the attached figures 1 to 7 comprises a module end plate 2 of the battery module, wherein the module end plate 2 comprises an inner plate 5 and an outer plate 7, an energy-absorbing sandwich layer 8 is arranged between the inner plate 5 and the outer plate 7, the energy-absorbing sandwich layer 8 is of a honeycomb array structure, and the axis of a honeycomb hole 8.1 of a honeycomb array of the energy-absorbing sandwich layer 8 is perpendicular to the inner plate 5 and the outer plate 7; a first end 6.1 and a second end 6.2 are respectively arranged at two ends of the energy-absorbing sandwich layer 8; the sandwich layer 8 of the embodiment is an aluminum alloy structure with a honeycomb array structure formed by integrated hot pressing, and the honeycomb holes 8.1 are regular hexagon honeycomb holes; the sandwich plate is formed by adopting a sandwich design and a hot pressing technology, the inner layer plate 5 and the outer layer plate 7 are made of high-strength aluminum, the middle sandwich is made of aluminum honeycombs, the structural rigidity is increased while the weight is reduced, the sandwich is made of an aluminum honeycomb structure, the density is small (about 3-7 kilograms per square meter), the sandwich is 1/7 made of aluminum materials with the same thickness and the same area, the weight of the honeycomb plate with the same rigidity is only 1/5 of an aluminum veneer, the weight of 1/10 of a steel plate is equal to that of an aluminum honeycomb core which is connected with each other like a plurality of I-shaped steel, and the core layers are distributed and fixed in the whole plate surface, so that the plate is more stable; in the battery module is used, when electric core inflation, the pressure that comes from the panel direction can be undertaken in the dispersion to the honeycomb aluminium structure, makes the board atress even, and effectual energy-absorbing suppresses electric core inflation to improve electric core electric property's stability and life.
The battery module comprises two module end plates 2, wherein the two module end plates 2 are respectively a first module end plate 2.1 and a second module end plate 2.2; the battery module also comprises a first module side plate 1.1 and a second module side plate 1.2; the first module end plate 2.1, the first module side plate 1.1, the second module end plate 2.2 and the second module side plate 1.2 are connected with one another to form a rectangular frame structure, and the inner side enclosed by the frame structure forms a battery cell restraint bin 9; the battery also comprises a plurality of block-shaped battery cores 3, and the block-shaped battery cores 3 are tightly overlapped in the battery core restraint bin 9 to form a battery core group 30; each block-shaped electric core 3 in the electric core group 30 is parallel to the first module end plate 2.1 and the second module end plate 2.2; the block-shaped electric cores 3 at the two ends of the electric core group 30 are a head block-shaped electric core 3.1 and a tail block-shaped electric core 3.2 respectively; the head block-shaped battery cell 3.1 is tightly attached to the inner plate 5 of the first module end plate 2.1, and the tail block-shaped battery cell 3.2 is tightly attached to the inner plate 5 of the second module end plate 2.2; because the arrangement structure of a plurality of cubic electric cores 3.1 of this embodiment, cubic electric core 3's the inflation direction is perpendicular with two module end plate 2's face, consequently case 30 whole inflation back of this embodiment only can produce the extrusion force of vertical direction to first module end plate 2.1 and second module end plate 2.2, and the honeycomb aluminum structure in first module end plate 2.1 and the second module end plate 2.2 can disperse and undertake the pressure that comes from the panel direction, make the board atress even, effectual energy-absorbing that carries on, restrain the electric core inflation, and very high radiating effect still has.
Two ends of the inner layer plate 5 and two ends of the outer layer plate 7 are respectively lapped on the first end 6.1 and the second end 6.2; the first end 6.1 and the second end 6.2 are both vertical columnar structures; the two sides of one end of the first end 6.1/the second end 6.2 close to the energy-absorbing sandwich layer 8 are respectively provided with a first lap joint gap and a second lap joint gap, the two ends of the inner layer plate 5 are respectively lapped on the first lap joint gaps of the first end 6.1 and the second end 6.2, and the two ends of the outer layer plate 7 are respectively lapped on the second lap joint gaps of the first end 6.1 and the second end 6.2; the first end 6.1 and the second end 6.2 of the present embodiment are provided with a thread locking hole 07 along the axial direction, for integrally fixing the battery module at a place where fixing is required; the two ends of the first module side plate 1.1 and the second module side plate 1.2 are both provided with vertical flanges 11, the vertical flanges 11 are overlapped with the sinking surfaces 7.1 at the two ends of the outer plate 7, and all contact surfaces of the overlapped connection in the embodiment can be tightly bonded by metal adhesives (such as high-strength adhesives like ergo1665 and ergo 1307) and can also be fastened by adopting a spot welding mode.
The above is only a preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides an end plate structure of lightweight battery module which characterized in that: the battery module comprises a module end plate (2) of a battery module, wherein the module end plate (2) comprises an inner layer plate (5) and an outer layer plate (7), an energy-absorbing sandwich layer (8) is arranged between the inner layer plate (5) and the outer layer plate (7), the energy-absorbing sandwich layer (8) is of a honeycomb array structure, and the axis of a honeycomb hole (8.1) of a honeycomb array of the energy-absorbing sandwich layer (8) is perpendicular to the inner layer plate (5) and the outer layer plate (7); and a first end (6.1) and a second end (6.2) are respectively arranged at two ends of the energy-absorbing sandwich layer (8).
2. The end plate structure of a light-weight battery module according to claim 1, characterized in that: the sandwich layer (8) is an aluminum alloy structure which is formed by integrally hot-pressing a honeycomb array structure, and the honeycomb holes (8.1) are regular-hexagon honeycomb holes.
3. The end plate structure of a light-weight battery module according to claim 2, characterized in that: the battery module comprises two module end plates (2), wherein the two module end plates (2) are respectively a first module end plate (2.1) and a second module end plate (2.2); the battery module further comprises a first module side plate (1.1) and a second module side plate (1.2); first module end plate (2.1), first module curb plate (1.1), second module end plate (2.2) and second module curb plate (1.2) interconnect constitute rectangular frame structure, the inboard that frame structure encloses forms electric core restraint storehouse (9).
4. The end plate structure of a light-weight battery module according to claim 3, characterized in that: the battery cell is characterized by further comprising a plurality of block-shaped battery cells (3), wherein the block-shaped battery cells (3) are tightly overlapped in the battery cell restraint bin (9) to form a battery cell group (30).
5. The end plate structure of a light-weight battery module according to claim 4, wherein: each block-shaped battery cell (3) in the battery cell group (30) is parallel to the first module end plate (2.1) and the second module end plate (2.2); the block-shaped electric cores (3) at the two ends of the electric core group (30) are respectively a head block-shaped electric core (3.1) and a tail block-shaped electric core (3.2); the first block-shaped battery cell (3.1) is tightly attached to the inner plate (5) of the first module end plate (2.1), and the last block-shaped battery cell (3.2) is tightly attached to the inner plate (5) of the second module end plate (2.2).
6. The end plate structure of a light-weight battery module according to claim 5, characterized in that: the two ends of the inner layer plate (5) and the two ends of the outer layer plate (7) are respectively lapped on the first end (6.1) and the second end (6.2).
7. The end plate structure of a light-weight battery module according to claim 6, wherein: the first end (6.1) and the second end (6.2) are both vertical columnar structures; the two sides of the first end (6.1)/the second end (6.2) close to one end of the energy-absorbing sandwich layer (8) are respectively provided with a first lap joint notch and a second lap joint notch, the two ends of the inner layer plate (5) are respectively lapped on the first lap joint notches of the first end (6.1) and the second end (6.2), and the two ends of the outer layer plate (7) are respectively lapped on the second lap joint notches of the first end (6.1) and the second end (6.2).
8. The end plate structure of a light-weight battery module according to claim 7, characterized in that: the first end head (6.1) and the second end head (6.2) are provided with thread locking holes (07) along the axial direction; the two ends of the first module side plate (1.1) and the second module side plate (1.2) are respectively provided with a vertical flanging (11), and the vertical flanging (11) is in lap joint with sinking surfaces (7.1) at the two ends of the outer plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020271129.7U CN212380484U (en) | 2020-03-06 | 2020-03-06 | End plate structure of lightweight battery module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020271129.7U CN212380484U (en) | 2020-03-06 | 2020-03-06 | End plate structure of lightweight battery module |
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| CN212380484U true CN212380484U (en) | 2021-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060303A (en) * | 2021-03-18 | 2021-07-02 | 中国人民解放军国防科技大学 | Integrated spacecraft cabin plate containing structural lithium battery |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060303A (en) * | 2021-03-18 | 2021-07-02 | 中国人民解放军国防科技大学 | Integrated spacecraft cabin plate containing structural lithium battery |
| CN113060303B (en) * | 2021-03-18 | 2022-07-29 | 中国人民解放军国防科技大学 | Integrated spacecraft cabin plate containing structural lithium battery |
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