CN209786012U - Anti-extrusion power battery shell - Google Patents
Anti-extrusion power battery shell Download PDFInfo
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- CN209786012U CN209786012U CN201920512454.5U CN201920512454U CN209786012U CN 209786012 U CN209786012 U CN 209786012U CN 201920512454 U CN201920512454 U CN 201920512454U CN 209786012 U CN209786012 U CN 209786012U
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- Prior art keywords
- lateral wall
- resistant
- side walls
- compression
- wedge
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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 anti-extrusion power battery shell, which comprises a box-shaped shell body and a plurality of anti-compression beam ribs (4), wherein the shell body is formed by welding a pair of first side walls (1), a pair of second side walls (2) and a bottom plate (3); a plurality of compression beam ribs are arranged in the shell body at intervals; the outer walls of the pair of first side walls and the pair of second side walls are respectively provided with a pressure-resistant support (6), the pressure-resistant supports are strip-shaped sections with triangular sections, the pressure-resistant supports and the first side walls are integrally formed, and the pressure-resistant supports and the second side walls are integrally formed; the compression-resistant bracket is provided with a plurality of second connecting holes (61) so that the compression-resistant bracket can be used as an installation bracket of the shell body; the compression beam ribs are strip-shaped sections with inverted T-shaped sections, the compression beam ribs are fixed on the bottom plate and are perpendicular to the first side walls, and the compression beam ribs and the battery convex hulls are arranged at intervals. The utility model discloses can promote the anti extrusion ability of power battery, improve power battery's security.
Description
Technical Field
The utility model relates to a battery package structure of new forms of energy car especially relates to an anti extruded power battery shell.
Background
With the continuous development of the light-weight technology of the automobile, the requirement of the whole automobile on the structural strength of the power battery is continuously improved, and the requirement on the anti-extrusion capacity of the power battery is particularly increased while the safety and the light weight of the power battery are improved.
Most of existing hybrid power battery boxes are formed by bending sheet metal materials and welding in an argon arc welding mode, supports on the boxes are generally designed to be independent parts, are separated from the battery boxes used as bearing bodies, are attached to the boxes in a welding or threaded connection mode, and cannot bear high acting force. The structural mode often causes the problems of complex processing procedures of parts, high assembly quality and cost, multiple assembly procedures, poor reliability and the like; simultaneously, the inside roof beam of box is all comparatively simple, leads to structural strength to reduce.
disclosure of Invention
An object of the utility model is to provide an anti extruded power battery shell can promote the anti extrusion ability of power battery, improves power battery's security.
the utility model discloses a realize like this:
An anti-extrusion power battery shell comprises a shell body and a plurality of anti-compression beam ribs, wherein the shell body is of a box-shaped structure and is formed by welding a pair of first side walls, a pair of second side walls and a bottom plate; a plurality of compression beam ribs are arranged in the shell body at intervals;
The outer walls of the pair of first side walls and the pair of second side walls are respectively provided with a compression-resistant bracket, the compression-resistant brackets are strip-shaped sections with triangular sections, the compression-resistant brackets and the first side walls are integrally formed, and the compression-resistant brackets and the second side walls are integrally formed; the compression-resistant bracket is provided with a plurality of second connecting holes, so that the compression-resistant bracket can be used as an installation bracket of the shell body; the compression-resistant beam ribs are strip-shaped sections with inverted T-shaped sections, the compression-resistant beam ribs are fixed on the bottom plate and are perpendicular to the pair of first side walls, and the compression-resistant beam ribs are respectively arranged at intervals with the battery convex hulls.
The compression-resistant support is arranged on the outer wall of the first side wall along the length direction of the first side wall, and the compression-resistant support is arranged on the outer wall of the second side wall along the length direction of the second side wall.
The top of first lateral wall and second lateral wall all be equipped with the connection turn-ups, connect turn-ups and first lateral wall integrated into one piece, connect turn-ups and second lateral wall integrated into one piece, be equipped with the first connecting screw of a plurality of on the connection turn-ups.
The bottom of first lateral wall and second lateral wall all be equipped with the face of weld, face of weld and first lateral wall integrated into one piece, face of weld and second lateral wall integrated into one piece, first lateral wall and second lateral wall pass through the edge welded fastening of face of weld and bottom plate.
The inner edge of the welding surface is provided with an embedded groove, and the bottom plate is provided with an embedded flange matched with the embedded groove, so that the welding surface is connected with the bottom plate in a matching way.
The both ends of first lateral wall all be equipped with first wedge and connect the face, the both ends of second lateral wall all are equipped with and connect the assorted second wedge with first wedge and connect the face, make first lateral wall and second lateral wall accordant connection.
The first wedge-shaped connecting surface is provided with a notch, and the second wedge-shaped connecting surface is provided with a bulge matched with the notch, so that the first wedge-shaped connecting surface is attached to the second wedge-shaped connecting surface.
compared with the prior art, the utility model, following beneficial effect has:
1. The utility model discloses can improve the structural strength of battery case box through resistance to compression beam muscle and resistance to compression support to improve the anti extrusion ability of battery case box, under the prerequisite of guaranteeing lightweight, more help promoting power battery's security.
2. The utility model discloses an aluminium alloy is made, when reducing the product processing and warping, reducing the product processing degree of difficulty, has simplified whole package assembly step, makes the product lightweight simultaneously, the volume production of being convenient for.
3. the utility model discloses with battery case's lateral wall and support integrated as an organic whole, reduced welding cost, reduced the manual assembly expense to use through advanced welding technique has ensured the reliability and the security of product, reaches the requirement of battery energy density index.
the utility model discloses can promote the anti extrusion ability of power battery, improve power battery's security, can satisfy battery production requirement, reduce battery case's cost, the integrated level is high, has ensured battery case's lightweight.
Drawings
Fig. 1 is an assembled perspective view of an anti-extrusion power battery case of the present invention;
Fig. 2 is a cross-sectional view of the crush resistant power cell housing of the present invention;
fig. 3 is an assembled perspective view of the crush beam rib in the crush-resistant power battery case of the present invention;
Fig. 4 is a perspective view of a first side wall of an anti-extrusion power cell housing of the present invention;
Fig. 5 is a cross-sectional view of a first side wall of the crush resistant power cell housing of the present invention;
Fig. 6 is a perspective view of a crush beam rib in the crush-resistant power battery case of the present invention;
Fig. 7 is a cross-sectional view of a crush beam rib in the crush resistant power cell housing of the present invention;
Fig. 8 is a perspective view of a second side wall of the crush resistant power cell housing of the present invention;
Fig. 9 is a schematic view of the welding of the first sidewall and the second sidewall in the anti-extrusion power battery case of the present invention.
In the figure, 1 a first side wall, 11 a first wedge-shaped connecting surface, 111 gaps, 2 a second side wall, 21 a second wedge-shaped connecting surface, 211 protrusions, 3 bottom plates, 4 compression-resistant beam ribs, 5 battery convex hulls, 6 compression-resistant supports, 61 second connecting holes, 7 connecting flanges, 71 a first connecting screw hole, 8 welding surfaces and 81 embedded grooves.
Detailed Description
the invention will be further explained with reference to the drawings and the specific embodiments.
Referring to the attached drawing 1, the anti-extrusion power battery shell comprises a shell body of a box-shaped structure formed by welding a pair of first side walls 1, a pair of second side walls 2 and a bottom plate 3, and a plurality of anti-extrusion beam ribs 4; a plurality of compression beam ribs 4 are arranged in the shell body at intervals.
referring to fig. 2 to 4, the pair of first side walls 1 and the pair of second side walls 2 are provided with the compression-resistant brackets 6 on the outer walls thereof, the compression-resistant brackets 6 are strip-shaped sections with triangular sections, the compression-resistant brackets 6 are integrally formed with the first side walls 1, and the compression-resistant brackets 6 are integrally formed with the second side walls 2, so that the compression resistance of the side walls of the housing body in the X direction and the Z direction in the horizontal plane can be improved, that is, the resistance of the side walls against external force is improved. The compression-resistant support 6 is provided with a plurality of second connecting holes 61, and the compression-resistant support 6 can be used as a connecting support of the shell body and is used for installing the shell body and fixedly connecting the shell body with other equipment. Referring to fig. 6 and 7, the compression beam ribs 4 are strip-shaped sections with inverted T-shaped cross sections, and a plurality of compression beam ribs 4 are fixed at intervals on the convex hulls 5 by welding and the like, and are used for reinforcing the installation of the battery convex hulls 5 in the housing body.
The anti-pressure support 6 set up on the outer wall of first lateral wall 1 along the length direction of first lateral wall 1, anti-pressure support 6 sets up on the outer wall of second lateral wall 2 along the length direction of second lateral wall 2, preferentially, anti-pressure support 6 on a pair of first lateral wall 1 and a pair of second lateral wall 2 can set up one or more according to shell body's size, battery package arrangement, resistance to pressure requirement to reach the purpose of resisting the X of perpendicular to first lateral wall 1 to pressure and the Z of perpendicular to second lateral wall 2 to pressure, improve shell body's bulk strength.
Referring to fig. 4 and 8, the top of each of the first side wall 1 and the second side wall 2 is provided with a connecting flange 7, the connecting flange 7 is integrally formed with the first side wall 1, the connecting flange 7 is integrally formed with the second side wall 2, and the connecting flange 7 is provided with a plurality of first connecting screw holes 71, which can be used for mounting the housing body and fixedly connecting the housing body with the power battery upper cover and other components. Preferably, the thickness of the connecting flange 7 is 24mm, so that it is sufficient to mount and carry the power cell cover, and for mounting the power cell cover, the connecting flange 7 is normally connected perpendicularly to the first side wall 1 and the second side wall 2.
Referring to fig. 5, the bottom of each of the first side wall 1 and the second side wall 2 is provided with a welding surface 8, the welding surface 8 and the first side wall 1 are integrally formed, the welding surface 8 and the second side wall 2 are integrally formed, and the first side wall 1 and the second side wall 2 are welded and fixed with the edge of the bottom plate 3 through the welding surface 8, so that the welding stability can be improved, the strength of the housing body can be improved, and the purpose of resisting pressure can be achieved. Preferably, the soldering surface 8 has a thickness of 2mm and is used for mounting the base plate 3, and the soldering surface 8 is normally perpendicularly connected to the first side wall 1 and the second side wall 2 for mounting the base plate 3.
The inner edge of face of weld 8 be equipped with and inlay dress recess 81, be equipped with on bottom plate 3 with inlay dress recess 81 assorted and inlay the dress flange, make face of weld 8 and 3 accordant connection of bottom plate, the welding of being convenient for has just improved the reliability that the bottom plate is connected, further improves the intensity of shell body.
Referring to fig. 8 and fig. 9, the two ends of the first sidewall 1 are both provided with a first wedge-shaped connecting surface 11, and the two ends of the second sidewall 2 are both provided with a second wedge-shaped connecting surface 21 matched with the first wedge-shaped connecting surface 11, so that the first sidewall 1 and the second sidewall 2 are connected in a matching manner, the area of a welding surface is increased, the connection reliability of the sidewalls is improved, and the strength of the housing body is improved. Preferably, the first wedge-shaped connecting surface 11 may further be provided with a notch 111, and the second wedge-shaped connecting surface 21 may be provided with a protrusion 211 matching with the notch 111, so that the first wedge-shaped connecting surface 11 and the second wedge-shaped connecting surface 21 can be attached more reliably.
The utility model discloses power battery shell when the installation, with the second wedge of two first lateral walls 1 and two second lateral walls 2 and be connected face 11 and 21 welded fastening with the first wedge of two first lateral walls 1, form rectangular frame structure, preferred, first lateral wall 1 and second lateral wall 2's thickness is 12mm, makes it have good load performance, adopts MIG welding technique between each lateral wall, guarantees the sealed and bearing strength of shell body. The bottom plate 3 is connected with the embedded groove 81 of the welding surface 8 at the bottom of the first body 1 in a matching way through the embedded flange and is fixed by welding to form a shell body; the welding between the side wall and the bottom plate 3 can adopt a friction stir welding technology, and the structural strength of the product is obviously improved. A plurality of anti-pressure beam ribs 4 are arranged on the bottom plate 3 in a welding mode and the like, and a battery convex hull 5 is arranged between every two adjacent anti-pressure beam ribs 4, so that the battery convex hull 5 can be protected. Because the inverted T-shaped compression-resistant beam rib 4 is arranged on the bottom plate 3, and the integrally formed triangular compression-resistant supports 6 are arranged on the first side wall 1 and the second side wall 2, the extrusion force from the side wall of the shell, which is received by the battery convex hull 5, can be effectively resisted, and the compression-resistant supports 6 can be used as mounting supports of the battery shell.
preferably, the utility model discloses a most part can adopt the aluminium alloy extrusion die to extrude, and production simple process, the quality is light, and is with low costs.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (7)
1. An anti-extrusion power battery shell comprises a shell body of a box-shaped structure formed by welding a pair of first side walls (1), a pair of second side walls (2) and a bottom plate (3), and a plurality of anti-compression beam ribs (4); a plurality of compression resistant beam ribs (4) are arranged in the shell body at intervals;
The method is characterized in that: the outer walls of the pair of first side walls (1) and the pair of second side walls (2) are respectively provided with a pressure-resistant support (6), the pressure-resistant supports (6) are strip-shaped sections with triangular sections, the pressure-resistant supports (6) and the first side walls (1) are integrally formed, and the pressure-resistant supports (6) and the second side walls (2) are integrally formed; the compression-resistant bracket (6) is provided with a plurality of second connecting holes (61), so that the compression-resistant bracket (6) can be used as a mounting bracket of the shell body; the anti-pressure beam ribs (4) are strip-shaped sections with inverted T-shaped sections, the anti-pressure beam ribs (4) are fixed on the bottom plate (3) and are perpendicular to the pair of first side walls (1), and the anti-pressure beam ribs (4) are respectively arranged at intervals with the battery convex hulls (5).
2. the crush resistant power cell housing of claim 1, wherein: the compression-resistant support (6) is arranged on the outer wall of the first side wall (1) along the length direction of the first side wall (1), and the compression-resistant support (6) is arranged on the outer wall of the second side wall (2) along the length direction of the second side wall (2).
3. The crush resistant power cell housing of claim 1, wherein: the top of first lateral wall (1) and second lateral wall (2) all be equipped with and connect turn-ups (7), connect turn-ups (7) and first lateral wall (1) integrated into one piece, connect turn-ups (7) and second lateral wall (2) integrated into one piece, be equipped with the first connection screw (71) of a plurality of on connecting turn-ups (7).
4. the crush resistant power cell housing of claim 1, wherein: the bottom of first lateral wall (1) and second lateral wall (2) all be equipped with face of weld (8), face of weld (8) and first lateral wall (1) integrated into one piece, face of weld (8) and second lateral wall (2) integrated into one piece, edge welded fastening of face of weld (8) and bottom plate (3) is passed through in first lateral wall (1) and second lateral wall (2).
5. The crush resistant power cell housing of claim 4, wherein: the edge of the inner end of the welding face (8) is provided with an embedded groove (81), the bottom plate (3) is provided with an embedded flange matched with the embedded groove (81), and the welding face (8) is connected with the bottom plate (3) in a matching mode.
6. The crush resistant power cell housing of claim 1, wherein: the both ends of first lateral wall (1) all be equipped with first wedge and connect face (11), the both ends of second lateral wall (2) all are equipped with and connect face (11) assorted second wedge with first wedge and connect face (21), make first lateral wall (1) and second lateral wall (2) accordant connection.
7. The crush resistant power cell housing of claim 6, wherein: the first wedge-shaped connecting surface (11) is provided with a notch (111), and the second wedge-shaped connecting surface (21) is provided with a bulge (211) matched with the notch (111), so that the first wedge-shaped connecting surface (11) is matched and attached with the second wedge-shaped connecting surface (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920512454.5U CN209786012U (en) | 2019-04-16 | 2019-04-16 | Anti-extrusion power battery shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920512454.5U CN209786012U (en) | 2019-04-16 | 2019-04-16 | Anti-extrusion power battery shell |
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| Publication Number | Publication Date |
|---|---|
| CN209786012U true CN209786012U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920512454.5U Active CN209786012U (en) | 2019-04-16 | 2019-04-16 | Anti-extrusion power battery shell |
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| Country | Link |
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| CN (1) | CN209786012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023174291A1 (en) * | 2022-03-14 | 2023-09-21 | 比亚迪股份有限公司 | Battery pack and vehicle |
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2019
- 2019-04-16 CN CN201920512454.5U patent/CN209786012U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023174291A1 (en) * | 2022-03-14 | 2023-09-21 | 比亚迪股份有限公司 | Battery pack and vehicle |
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