CN217387439U - Power battery aluminum shell - Google Patents
Power battery aluminum shell Download PDFInfo
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- CN217387439U CN217387439U CN202220552994.8U CN202220552994U CN217387439U CN 217387439 U CN217387439 U CN 217387439U CN 202220552994 U CN202220552994 U CN 202220552994U CN 217387439 U CN217387439 U CN 217387439U
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- power battery
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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 provides a power battery aluminum hull, which comprises a housin, the inside of casing is equipped with the cavity, the top of casing link up and is equipped with the opening, cavity and opening intercommunication, the open-ended lateral wall is the thick wall, the cavity lateral wall is the thin wall, the bottom of casing is equipped with the welding bench, the welding bench includes weld part one and weld part two, and weld part one is different with the thickness of weld part two, and the open-ended lateral wall is the thick wall, seals the back at the opening extrusion, has improved the seal strength of casing, satisfies the operation requirement of electric core, has solved big cylinder electricity core pressure release and has required explosion-proof valve to carry out the pressure release, has increased electric core structure cost, if through sealing the pressure release, the aluminum hull is too thin, leads to seal strength not enough, and electric core atmospheric pressure can break and seal when normally using, leads to the technical problem that electric core became invalid.
Description
Technical Field
The utility model relates to a battery technology field particularly, relates to a power battery aluminum hull.
Background
At present, power battery enterprises are developing vigorously, the battery output is increased day by day, the capacity density of the battery is improved, and certain competitive capacity of the battery in the market is ensured, which is a close concern of various manufacturers. The pressure relief of the large cylindrical battery cell needs an explosion-proof valve for pressure relief, so that the cost of a battery cell structural member is increased, if the pressure relief is carried out through sealing, the aluminum shell is too thin, so that the sealing strength is insufficient, and the sealing is broken by air pressure when the battery cell is normally used, so that the battery cell is failed; big cylinder generally is two caps of bi-pass aluminum hull and goes out utmost point post, the structure quantity needs more, the more complicated cost of assembly is higher, design a low-cost electric core now, the electric core oral area is the negative pole post, aluminum hull bottom is as anodal in addition, if aluminum hull bottom is too thick, the too thick laser of shell bottom is difficult to pierce through and welds or welds easily and lead to the weeping through electric core, if aluminum hull bottom is too thin, the too thin welding of shell bottom punctures the shell bottom easily and leads to electric core weeping, so hardly compromise two above-mentioned risks.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power battery aluminum hull, need the explosion-proof valve to carry out the pressure release for solving the big cylinder electricity core pressure release that the aforesaid provided, electric core structure cost has been increased, if through sealing the pressure release, the aluminum hull is too thin, lead to sealing strength not enough, atmospheric pressure can break through and seal when electric core normal use, lead to electric core inefficacy and the low-cost electric core of present design, electric core oral area is the negative pole post, aluminum hull bottom is as the positive pole in addition, if the aluminum hull bottom is too thick, the too thick laser of shell bottom is difficult to pierce through and welds or welds easily and lead to the weeping through electric core, if the aluminum hull bottom is too thin, the too thin welding of shell bottom breaks through at least one item technical problem in the electric core weeping easily.
For solving the technical problem, the utility model discloses a provide a power battery aluminum hull, which comprises a housin, the inside of casing is equipped with the cavity, the top of casing link up and is equipped with the opening, cavity and opening intercommunication, the open-ended lateral wall is the thick wall, the cavity lateral wall is the thin wall, the bottom of casing is equipped with the welding bench, the welding bench includes weld part one and weld part two, and the thickness of weld part one and weld part two is different.
Preferably, the first welding part is a thin area, and the first welding part is used for welding the positive current collecting plate.
Preferably, the second welding part is a thick area, and the second welding part is used for welding a Busbar at the module end.
Preferably, a film-coated folding area is arranged at the bottom of the first welding portion, and the thickness of the first welding portion after film coating is smaller than that of the second welding portion.
Preferably, the second welding part is arranged in the middle of the first welding part;
or the second welding part is arranged on the left side and the right side of the first welding part.
Preferably, a cap is arranged inside the opening, and the cap is connected with the opening in a squeezing sealing mode.
Preferably, a limiting ring is fixedly arranged on the side wall of the joint of the opening and the cavity, and the limiting ring is used for limiting the cap.
Preferably, the outside of the opening is connected with a reinforcing mechanism, the reinforcing mechanism comprises a first reinforcing block and a second reinforcing block, the front side and the rear side of the first reinforcing block and the second reinforcing block are respectively provided with a movable cavity, the movable cavity is rotatably provided with a contact block, the upper ends of the front side and the rear side of the first reinforcing block and the second reinforcing block are respectively provided with a connecting groove, the connecting grooves are in one-to-one correspondence with the movable cavities and are communicated with the movable cavities, the connecting grooves are provided with a plurality of clamping groove groups along the length direction of the connecting grooves, each clamping groove group comprises two clamping grooves, the two clamping grooves are respectively arranged at the side ends of the connecting grooves, which are perpendicular to the length direction of the connecting grooves, the clamping grooves are communicated with the connecting grooves, the connecting grooves are connected with the fixed end of the telescopic rod in a sliding manner, the fixed end of the telescopic rod enters the movable cavity to be fixedly connected with the contact block, and the movable end of the telescopic rod is fixedly connected with a clamping plate, and the clamping plate is matched with two clamping grooves in the clamping groove group.
Preferably, boss one and boss two pass through coupling mechanism and connect, coupling mechanism includes two fixed blocks and two fixed orificess, and two fixed blocks and two fixed orifices one-to-one settings, two fixed block symmetries set up both ends around the boss two, two fixed orifices symmetries set up both ends around the boss one, the fixed block with the fixed orifices cooperation, the fixed elasticity card that is equipped with in upper end of fixed orifices, the upper end fixedly connected with stopper of fixed block, the elasticity card is used for right the stopper carries on spacingly.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a second welding part of the present invention on the left and right sides of the first welding part;
FIG. 3 is a schematic view of FIG. 2 taken along line B;
FIG. 4 is a schematic structural view of a second welding part in the middle of the first welding part according to the present invention;
FIG. 5 is a schematic view of FIG. 4 taken along line C;
FIG. 6 is an enlarged view of area A of FIG. 5;
fig. 7 is a schematic top view of the reinforcing mechanism of the present invention;
fig. 8 is a schematic view of the connection structure between the fixing block and the fixing hole of the present invention.
In the figure: 1. a housing; 101. an opening; 102. a cavity; 2. a welding table; 201. a first welding part; 202. Welding part two; 3. capping; 4. a seal ring; 5. a first reinforcing block; 501. a fixing hole; 502. an elastic card; 6. a second reinforcing block; 601. a fixed block; 602. a limiting block; 7. a contact block; 701. a movable cavity; 8. connecting grooves; 801. a card slot; 9. a telescopic rod.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between the various embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The utility model provides an embodiment as follows
Example 1
The embodiment of the utility model provides a power battery aluminum shell, as shown in fig. 1-6, including casing 1, the inside of casing 1 is equipped with cavity 101, the top of casing 1 link up and is equipped with opening 102, cavity 101 and opening 102 communicate, the lateral wall of opening 102 is the thick wall, cavity 101 lateral wall is the thin wall, the bottom of casing 1 is equipped with welding bench 2, welding bench 2 includes welding part one 201 and welding part two 202, and welding part one 201 and welding part two 202's thickness is different;
the wall thickness of the opening 102 can be changed, and the wall thickness of the opening 102 is larger than that of the cavity 101;
the first welding portion 201 is a thin area, and the first welding portion 201 is used for welding a positive current collecting plate;
the second welding part 202 is a thick area, and the second welding part 202 is used for welding a Busbar at the module end;
the bottom of the first welding part 201 is provided with an envelope folding area, and the thickness of the enveloped first welding part 201 is smaller than that of the second welding part 202;
the second welding part 202 is arranged in the middle of the first welding part 201;
or the second welding part 202 is arranged at the left side and the right side of the first welding part 201;
a cap 3 is arranged inside the opening 102, and the cap 3 is connected with the opening 102 in a squeezing sealing manner;
the side wall of the joint of the opening 102 and the cavity 101 is fixedly provided with a limiting ring 4, and the limiting ring 4 is used for limiting the cap 3.
The beneficial effects of the above technical scheme are:
the side wall of the cavity 101 is a thin wall, so that the space for placing the battery cell is increased, and the weight of the shell 1 is reduced, so that the energy density of the battery cell is improved, the material of the shell 1 is reduced due to the thin wall of the cavity 101, and the material cost of the shell 1 is reduced; the side wall of the opening 102 is thick, after the opening 102 is extruded and sealed, the sealing strength of the shell 1 is improved, the use requirement of the battery cell is easily met, the problem that the explosion-proof valve is required for pressure relief of a large cylindrical battery cell is solved, the cost of the battery cell structural member is increased, if the seal is used for pressure relief, the aluminum shell is too thin, so that the seal strength is not enough, the seal can be broken by air pressure when the battery cell is normally used, and the battery cell is failed, because the electric core in the cavity 101 can generate gas during operation, the sealing strength of the shell 1 is less than the gas generation pressure after the electric core is out of control, less than the compressive strength of the shell 1, and more than the gas generation pressure during normal use of the electric core, the sealing strength of the shell 1 can be changed by changing the wall thickness of the opening 102, and also by changing the material of the shell 1, further changing the compressive strength of the shell 1, thereby achieving the purpose of changing the sealing strength of the shell 1; the first welding part 201 is a thin area, and the situation that laser is difficult to penetrate through the welding or liquid leakage is caused by easy penetration of a welding cell due to the fact that the first welding part 201 is too thick is avoided because the positive electrode current collecting disc is thin; the second welding part 202 is a thick area, and the bus bar at the end of the module is thick, so that the problem that the cell bottom is easy to break down to cause cell leakage when the second welding part 202 is welded too thin is solved, the problem that a low-cost cell is designed at present, the mouth part of the cell is a negative pole column, and the bottom of an aluminum shell is used as a positive pole; the bottom of the first welding portion 201 is provided with a film coating folding area, the thickness of the first welding portion 201 after film coating is smaller than that of the second welding portion 202, the space of the first welding portion 201 and the space of the second welding portion 202 are fully utilized, and the situation that the bottom of an aluminum shell is overlapped with a film coating and higher than the bottom of the aluminum shell, and the height space of an electric core is occupied is avoided.
Example 2
On the basis of embodiment 1, as shown in fig. 7 to 8, a reinforcing mechanism is connected to the outside of the opening 102, the reinforcing mechanism includes a first reinforcing block 5 and a second reinforcing block 6, movable cavities 701 are respectively provided on the front and rear sides of the first reinforcing block 5 and the second reinforcing block 6, a contact block 7 is rotatably provided in the movable cavity 701, connecting grooves 8 are respectively provided on the upper ends of the front and rear sides of the first reinforcing block 5 and the second reinforcing block 6, the connecting grooves 8 correspond to the movable cavities 701 one by one, the connecting grooves 8 are communicated with the movable cavities 701, the connecting grooves 8 are provided with a plurality of groove sets along the length direction of the connecting grooves 8, each groove set includes two grooves 801, the two grooves 801 are respectively provided on the side end of the connecting groove 8 perpendicular to the length direction of the connecting groove 8, the groove 801 is communicated with the connecting groove 8, the connecting groove 8 is slidably connected with the fixed end of the telescopic rod 9, and the fixed end of the telescopic rod 9 enters the movable cavity 701 to be fixedly connected with the contact block 7, the movable end of the telescopic rod 9 is fixedly connected with a clamping plate, and the clamping plate is matched with two clamping grooves 801 in the clamping groove group.
The first reinforcing block 5 and the second reinforcing block 6 are connected through a connecting mechanism, the connecting mechanism comprises two fixing blocks 601 and two fixing holes 501, the two fixing blocks 601 and the two fixing holes 501 are arranged in a one-to-one correspondence manner, the two fixing blocks 601 are symmetrically arranged at the front end and the rear end of the second reinforcing block 6, the two fixing holes 501 are symmetrically arranged at the front end and the rear end of the first reinforcing block 5, the fixing blocks 601 are matched with the fixing holes 501, elastic clamping pieces 502 are fixedly arranged at the upper ends of the fixing holes 501, the upper ends of the fixing blocks 601 are fixedly connected with limiting blocks 602, and the elastic clamping pieces 502 are used for limiting the limiting blocks 602;
a mounting annular groove is arranged at the position of the outer part of the shell 1 corresponding to the opening 102, the contact block 7 enters the mounting annular groove to be in contact with the outer part of the shell 1,
the beneficial effects of the above technical scheme are:
when the reinforcing mechanism is installed with the shell 1, the contact block 7 is placed in the installation annular groove, then the telescopic rod 9 is pulled, the movable end of the telescopic rod 9 drives the clamping plate to move, the clamping plate is separated from the clamping groove 801, then the telescopic rod 9 is pulled to slide along the connecting groove 8, the fixed end of the telescopic rod 9 drives the contact block 7 to rotate, the purpose of adjusting the position of the contact block 7 is achieved, the contact area between the contact block 7 and the outer part of the shell 1 is improved by adjusting the positions of the contact block 7 in the front, back, left and right directions, the contact area between the contact block 7 and the outer part of the shell 1 is improved, the sealing strength after the reinforcing mechanism extrudes and seals the opening 102 is improved, the contact block 7 and the outer part of the shell 1 are prevented from being reduced due to irregular outer part, meanwhile, the position of the contact block 7 is adjusted to be convenient for the first reinforcing block 5 to be connected with the second reinforcing block 6, when the position of the contact block 7 is adjusted to correspond to the fixed block 601 and the fixed hole 501, the fixed block 601 is inserted into the fixed hole 501, the limit block 602 contacts with the elastic clamping piece 502 in the insertion process of the fixed block 601 to push the elastic clamping piece 502 to move upwards, the movement of the limit block 602 is not limited, after the limit block 602 is separated from the elastic clamping piece 502, the elastic clamping piece 502 returns to the original position, the elastic clamping piece 502 contacts with the seam between the fixed block 601 and the limit block 602 at the moment, the fixed block 601 contacts with the side end of the fixed hole 501, the fixed block 601 cannot be inserted inwards continuously, if the fixed block 601 is pulled outwards, the limit block 602 pushes the elastic clamping piece 502 to move downwards, the fixed block 601 limits the downward movement of the elastic clamping piece 502, so that the fixed block 601, the elastic clamping piece 502 and the limit block 602 are clamped, the purpose of connecting the first reinforcing block 5 and the second reinforcing block 6 is completed, and the reinforcing mechanism is installed to further improve the sealing strength of the opening 102 after being sealed by extrusion, avoiding the deformation of the sealing part of the shell 1.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A power battery aluminum shell which is characterized in that: including casing (1), the inside of casing (1) is equipped with cavity (101), the top of casing (1) link up and is equipped with opening (102), cavity (101) and opening (102) intercommunication, the lateral wall of opening (102) is the thick wall, cavity (101) lateral wall is the thin wall, the bottom of casing (1) is equipped with welding bench (2), welding bench (2) are including welding portion one (201) and welding portion two (202), and the thickness of welding portion one (201) and welding portion two (202) is different.
2. The power battery aluminum casing of claim 1, wherein: the first welding part (201) is a thin area, and the first welding part (201) is used for welding the positive current collecting plate.
3. The power battery aluminum casing of claim 2, wherein: the second welding portion (202) is a thick area, and the second welding portion (202) is used for welding a module end Busbar.
4. The power battery aluminum casing of claim 3, wherein: the bottom of the first welding part (201) is provided with an envelope folding area, and the thickness of the enveloped first welding part (201) is smaller than that of the second welding part (202).
5. The power battery aluminum casing of claim 1, wherein: the second welding part (202) is arranged in the middle of the first welding part (201);
or the second welding part (202) is arranged on the left side and the right side of the first welding part (201).
6. The power battery aluminum casing of claim 1, wherein: a cap (3) is arranged inside the opening (102), and the cap (3) is connected with the opening (102) in a squeezing sealing mode.
7. The power battery aluminum casing of claim 6, wherein: the side wall of the joint of the opening (102) and the cavity (101) is fixedly provided with a limiting ring (4), and the limiting ring (4) is used for limiting the cover cap (3).
8. The power battery aluminum casing of claim 1, wherein: the reinforcing mechanism is connected to the outside of the opening (102), the reinforcing mechanism comprises a first reinforcing block (5) and a second reinforcing block (6), movable cavities (701) are arranged on the front side and the rear side of the first reinforcing block (5) and the second reinforcing block (6), contact blocks (7) are arranged in the movable cavities (701) in a rotating mode, connecting grooves (8) are arranged at the upper ends of the front side and the rear side of the first reinforcing block (5) and the second reinforcing block (6), the connecting grooves (8) correspond to the movable cavities (701) one by one, the connecting grooves (8) are communicated with the movable cavities (701), a plurality of clamping groove groups are arranged on the connecting grooves (8) along the length direction of the connecting grooves (8), each clamping groove group comprises two clamping grooves (801), the two clamping grooves (801) are respectively arranged at the side ends, perpendicular to the length direction of the connecting grooves (8), of the clamping grooves (801) are communicated with the connecting grooves (8), the connecting groove (8) is connected with the fixed end of the telescopic rod (9) in a sliding mode, the fixed end of the telescopic rod (9) enters the movable cavity (701) to be fixedly connected with the contact block (7), the movable end of the telescopic rod (9) is fixedly connected with a clamping plate, and the clamping plate is matched with two clamping grooves (801) in the clamping groove group.
9. The power battery aluminum shell of claim 8, wherein: the reinforcing block I (5) is connected with the reinforcing block II (6) through a connecting mechanism, the connecting mechanism comprises two fixing blocks (601) and two fixing holes (501), the two fixing blocks (601) and the two fixing holes (501) are in one-to-one correspondence, the two fixing blocks (601) are symmetrically arranged at the front end and the rear end of the reinforcing block II (6), the two fixing holes (501) are symmetrically arranged at the front end and the rear end of the reinforcing block I (5), the fixing blocks (601) are matched with the fixing holes (501), elastic cards (502) are fixedly arranged at the upper ends of the fixing holes (501), limit blocks (602) are fixedly connected to the upper ends of the fixing blocks (601), and the elastic cards (502) are used for limiting the limit blocks (602).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220552994.8U CN217387439U (en) | 2022-03-15 | 2022-03-15 | Power battery aluminum shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220552994.8U CN217387439U (en) | 2022-03-15 | 2022-03-15 | Power battery aluminum shell |
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| Publication Number | Publication Date |
|---|---|
| CN217387439U true CN217387439U (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220552994.8U Active CN217387439U (en) | 2022-03-15 | 2022-03-15 | Power battery aluminum shell |
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| Country | Link |
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| CN (1) | CN217387439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117096511A (en) * | 2023-10-18 | 2023-11-21 | 蜂巢能源科技股份有限公司 | Battery cell, battery module and battery pack |
-
2022
- 2022-03-15 CN CN202220552994.8U patent/CN217387439U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117096511A (en) * | 2023-10-18 | 2023-11-21 | 蜂巢能源科技股份有限公司 | Battery cell, battery module and battery pack |
| CN117096511B (en) * | 2023-10-18 | 2024-01-12 | 蜂巢能源科技股份有限公司 | Battery cell, battery module and battery pack |
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