Sectional material and power battery box

Abstract

The application discloses a section bar and a power battery box body, and belongs to the field of power batteries, and aims to solve the problems that the rigidity and strength of the frame structure of the prior art are insufficient, the power battery is easily deformed and damaged after being impacted, and the modules in the power battery box body are likely to be electrified and conductive, thereby causing fire and poor safety performance. The section bar comprises an outer supporting plate and an inner supporting plate, the left side of the outer supporting plate is provided with a supporting groove, the inner supporting plate is in a double-cross shape, and the inner supporting plate comprises a diagonal supporting plate provided with an upper triangular cavity and a lower triangular cavity on the two sides. The application has excellent rigidity and strength, is not easily deformed or damaged after being impacted, and can ensure that the power battery modules are not electrified or conductive, thereby preventing fire and having good safety performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power batteries, in particular to a profile and a power battery box. BACKGROUND

[0002] With the increasing prominence of environmental problems and technological progress, new energy vehicles have become the development direction of the automobile industry. With the rising penetration rate of new energy vehicles in the Chinese passenger vehicle market, new energy vehicle fire incidents often come to the public's attention, so the safety of new energy vehicles is increasingly concerned. Power batteries provide power for new energy vehicles and are closely related to the safety of new energy vehicles, so the safety of power batteries is also increasingly valued.

[0003] The power battery mainly includes an internal power battery module and a power battery box for installing the power battery module. The existing power battery box usually has a relatively simple frame structure, and the rigidity and strength of the power battery box are not enough, which causes the power battery to be easily deformed and damaged after being impacted, resulting in a fire; the existing power battery box has a relatively simple design of the module isolation structure inside, and the modules may be electrically leaked and conducted, resulting in a fire, and the safety performance is poor. SUMMARY

[0004] The present application solves the problem that the rigidity and strength of the frame structure of the existing power battery box are not enough, which causes the power battery to be easily deformed and damaged after being impacted, resulting in a fire, and the problem that the modules inside the existing power battery box may be electrically leaked and conducted, resulting in a fire, and the safety performance is poor, and provides a profile and a power battery box, which have excellent rigidity and strength, are not easily deformed or damaged after being impacted, and can ensure that the modules are not electrically leaked or conducted, thereby preventing a fire and having good safety performance.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a profile, comprising: an outer support plate, the left side of the outer support plate is provided with a support groove; an inner support plate, the inner support plate is in a double cross shape, and the inner support plate comprises a diagonal support plate provided with an upper triangular cavity and a lower triangular cavity on the two sides. The outer support plate is the outer plate of the profile, the inner support plate is the inner plate of the profile, the design of the double cross shape of the inner support plate and the design of the diagonal support plate make the profile have excellent rigidity and strength.

[0006] As a preferred, the outer support plate comprises a first upper support plate and a lower support plate arranged horizontally and a left support plate arranged vertically, the support groove is surrounded by the left end of the first upper support plate, the left end of the lower support plate and the left support plate, and the support groove comprises a horizontal part and an inclined part and a first arc part and a second arc part. The design of the support groove makes the profile side have the function of supporting.

[0007] As preferred, the inner support type plate further comprises a first vertical support plate, one end of the inclined support plate is connected to the length center of the first vertical support plate, the included angle between the inclined support plate and the upper part of the first vertical support plate is between 30° and 45°, and a second vertical support plate is arranged on the right side of the first vertical support plate. The first vertical support plate and the second vertical support plate are the vertically arranged parts in the double cross structure of the inner support type plate, and the included angle range between the inclined support plate and the upper part of the first vertical support plate is obtained by technicians after a large number of experiments.

[0008] As preferred, the outer support type plate further comprises a second upper support plate and a second right support plate, the inner support type plate further comprises a first horizontal support plate and a second horizontal support plate, one end of the second horizontal support plate is connected to the length center of the second right support plate, the second horizontal support plate is parallel to the second upper support plate, and the first horizontal support plate is arranged in the horizontal extension direction of the second upper support plate. The second horizontal support plate is the horizontally arranged part in the double cross structure of the inner support type plate, and the first horizontal support plate and the second upper support plate are in the same horizontal plane.

[0009] As preferred, the profile further comprises a first cavity, a second cavity and a third cavity, the third cavity is below the first cavity, the second cavity is obliquely below the first cavity, the first cavity and the third cavity have the same width, the second cavity and the third cavity have the same height, the width of the first cavity and the second cavity is greater than the height, and the height of the third cavity is greater than the width. The first cavity is the cavity inside the protruding part arranged above the profile, and the design sizes of the first cavity, the second cavity and the third cavity are obtained by technicians after a large number of experiments.

[0010] The application further provides a power battery box body, which comprises a first side beam made of the profile, an end side support block and a middle support block in a convex section, and a first main cross beam provided with a cross beam sleeve. The first side beam made of the profile improves the rigidity and strength of the power battery box body, and the end side support block and the middle support block in a convex section and the first main cross beam provided with the cross beam sleeve help to ensure that no electric leakage or conduction occurs between modules.

[0011] As preferred, one end of the first side beam is provided with a beveling part, the beveling part is provided with a bevel cover, the upper surface of the first side beam is provided with a positioning piece and a plurality of side beam sleeves, and the inner side surface of the first side beam is provided with a first opening and a second opening. The design of the beveling part makes the outer surface of the first side beam more beautiful, and the bevel cover installed on the beveling part enhances the dustproof and waterproof performance of the power battery box body.

[0012] As preferred, the end-side support block comprises a first upper convex part and a first lower convex part, the end-side support block is connected with the third side beam and the first side beam, the middle support block comprises a second upper convex part and a second lower convex part, the middle support block is connected with the first main cross beam and the third side beam, the first main cross beam is connected with the third main cross beam in the middle, and the third main cross beam has a height greater than that of the first main cross beam. The first upper convex part and the first lower convex part arranged on the end-side support block and the second upper convex part and the second lower convex part arranged on the middle support block increase the contact area with the module installed in the power battery box body, and the first upper convex part and the first lower convex part are spaced apart from the third side beam and the first side beam, and the second upper convex part and the second lower convex part are spaced apart from the third side beam.

[0013] As preferred, the power battery box further comprises a first stepped beam and a second stepped beam and a second side beam, the first side beam and the first stepped beam are connected through a first inclined beam, the first inclined beam is arranged in an inward inclination, the second side beam and the second stepped beam are connected through a second inclined beam, and the second inclined beam is arranged in an inward inclination. The first inclined beam and the second inclined beam arranged in an inward inclination and the design of the first stepped beam and the second stepped beam optimize the space occupied by the power battery box.

[0014] As preferred, the power battery box further comprises a rear cover plate, the rear cover plate is provided with a first support and a second support, and the rear cover plate is provided with a thin cross beam obliquely upward. In the structure, the two ends of the first support are connected with the rear cover plate, and the middle part of the second support is connected with the rear cover plate.

[0015] Compared with the prior art, the power battery box has the following beneficial effects: (1) the first side beam of the power battery box is made of the profile, the double-cross structure of the support plate in the profile and the design of the inclined support plate make the power battery box have excellent rigidity and strength, and the power battery box is not easy to deform or damage after being impacted, and the design of the support groove in the profile makes the inner side of the first side beam of the power battery box have a supporting function; (2) the end-side support block and the middle support block with a convex-shaped cross section in the power battery box and the first main cross beam provided with a cross beam sleeve help to ensure that there is no electric leakage or conduction between the modules, so that the fire can be prevented, and the safety performance is good; (3) the design of the beveling part makes the outer surface of the first side beam more beautiful, and the inclined cover plate installed on the beveling part enhances the dustproof and waterproof performance of the power battery box; (4) the design of the first inclined beam and the second inclined beam arranged in an inward inclination and the first stepped beam and the second stepped beam optimizes the space occupied by the power battery box. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of a profile of the application.

[0017] Figure 2It is a perspective view of a power battery box of the present application.

[0018] Figure 3 It is a partial enlarged view of a power battery box of the present application.

[0019] In the figure: 1. outer support plate, 11. first upper support plate, 12. second upper support plate, 13. first right support plate, 14. second right support plate, 15. lower support plate, 16. left support plate, 17. support groove, 171. horizontal part, 172. oblique part, 173. first arc-shaped part, 174. second arc-shaped part, 18. third arc-shaped part, 2. inner support plate, 21. first vertical support plate, 22. second vertical support plate, 23. first horizontal support plate, 24. second horizontal support plate, 25. oblique support plate, 26. first cavity, 27. second cavity, 28. third cavity, 29a. upper triangular cavity, 29b. lower triangular cavity, 3. outer frame, 31a. first side beam, 31b. second side beam, 311. positioning piece, 312. bevel part, 313. bevel cover plate, 314. side beam sleeve, 315. first opening, 316. second opening, 32. third side beam, 321. first lug, 322. second lug, 323. water inlet pipe, 324. water outlet pipe, 33. fourth side beam, 34. first step beam, 35. second step beam, 36. first oblique beam, 37. second oblique beam, 4. inner frame, 41a. first main horizontal beam, 41b. second main horizontal beam, 411. horizontal beam sleeve, 42. third main horizontal beam, 421. first groove, 422. second groove, 423. third groove, 43. first horizontal beam, 431. fourth groove, 432. fifth groove, 433. sixth groove, 44. second horizontal beam, 45. third horizontal beam, 46. thin horizontal beam, 47. end side support block, 471. first support part, 472. first upper convex part, 473. first lower convex part, 48. middle support block, 481. second support part, 482. second upper convex part, 483. second lower convex part, 5. bottom plate, 51. back cover plate, 511. first support, 512. second support. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be further described in detail below through specific embodiments and in combination with the drawings.

[0021] Embodiment:

[0022] As Figure 1The profile shown in one type, by high-strength aluminum alloy processing and manufacturing, including the outer support plate 1 and the inner support plate 2, the outer support plate 1, namely the outer profile plate of the profile, the inner support plate 2, namely the inner profile plate of the profile. The outer support plate 1 includes the first upper support plate 11 and the second upper support plate 12 on the upper side, the first upper support plate 11 and the second upper support plate 12 are both horizontally arranged, the first upper support plate 11 is located obliquely above the second upper support plate 12, the length of the second upper support plate 12 is greater than the length of the first upper support plate 11, and the first upper support plate 11 and the second upper support plate 12 are connected by the vertically arranged first right support plate 13 and the third arc-shaped part 18. The outer support plate 1 also includes the second right support plate 14 arranged vertically on the right side and the lower support plate 15 arranged horizontally on the lower side, the upper end of the second right support plate 14 is connected with the right end of the second upper support plate 12, and the right end of the lower support plate 15 is connected with the lower end of the second right support plate 14. The outer support plate 1 also includes the left support plate 16 arranged vertically on the left side, the left end of the first upper support plate 11 extends to the left side of the left support plate 16, and the left end of the lower support plate 15 also extends to the left side of the left support plate 16 but the extending length is relatively longer, the left side of the outer support plate 1 is provided with a support groove 17, and the support groove 17 is surrounded by the left end of the first upper support plate 11, the left end of the lower support plate 15 and the left support plate 16. The support groove 17 includes the horizontal part 171 and the inclined part 172 on the lower side and the first arc-shaped part 173, and also includes the outer surface of the left support plate 16 on the inner side of the support groove 17 and the second arc-shaped part 174 on the upper side, the design of the support groove 17 makes the side surface of the profile have the function of supporting.

[0023] The inner support type plate 2 is double cross-shaped, and the double cross-shaped structure is composed of the horizontally arranged second cross support plate 24 in the inner support type plate 2, the first vertical support plate 21 and the second vertical support plate 22 arranged vertically in the inner support type plate 2, and the second vertical support plate 22 is arranged parallel to the right side of the first vertical support plate 21, the central part of the first vertical support plate 21 and the second vertical support plate 22 is connected with the second cross support plate 24, that is, the first vertical support plate 21 and the second vertical support plate 22 divide the second cross support plate 24 into three sections, and the two sections on the left side are equal in length, and the section on the right side is longer than the sum of the lengths of the two sections on the left side. The right end of the second cross support plate 24 is connected with the length center of the second right support plate 14, the second cross support plate 24 is parallel to the second upper support plate 12, the inner support type plate 2 further comprises a first cross support plate 23, the right end of the first cross support plate 23 is connected with the upper end of the first vertical support plate 21, the lower end of the first right support plate 13 and the left end of the second upper support plate 12, the first cross support plate 23 is arranged in the horizontal extension direction of the second upper support plate 12, and the first cross support plate 23 and the second upper support plate 12 are in the same horizontal plane. The inner support type plate 2 further comprises an inclined support plate 25 arranged obliquely, one end of the inclined support plate 25 is connected with the length center of the first vertical support plate 21, and the included angle between the inclined support plate 25 and the upper part of the first vertical support plate 21 is arranged between 30° and 45°, and the range of the included angle between the inclined support plate 25 and the upper part of the first vertical support plate 21 is obtained by technicians through a large number of experiments. The double cross-shaped structure of the inner support type plate 2 and the design of the inclined support plate 25 make the profile have excellent rigidity and strength.

[0024] The profile further comprises a first cavity 26, a second cavity 27 and a third cavity 28. The first cavity 26 is one cavity formed by the first upper support plate 11, the left support plate 16, the first horizontal support plate 23 and the first right support plate 13. The second cavity 27 is two cavities, including a cavity formed by the second upper support plate 12, the second horizontal support plate 24, the second vertical support plate 22 and the second right support plate 14, and a cavity formed by the lower support plate 15, the second horizontal support plate 24, the second vertical support plate 22 and the second right support plate 14. The third cavity 28 is three cavities, including a cavity formed by the left support plate 16, the first horizontal support plate 23, the first vertical support plate 21 and the second horizontal support plate 24, a cavity formed by the left support plate 16, the second horizontal support plate 24, the first vertical support plate 21 and the lower support plate 15, and a cavity formed by the first vertical support plate 21, the second horizontal support plate 24, the second vertical support plate 22 and the lower support plate 15. The third cavity 28 is below the first cavity 26, and the second cavity 27 is obliquely below the first cavity 26. The first cavity 26 and the third cavity 28 have the same width, and the second cavity 27 and the third cavity 28 have the same height. The width of the first cavity 26 and the second cavity 27 is greater than the height, and the height of the third cavity 28 is greater than the width. The first cavity 26 is the cavity inside the protruding part provided above the profile, and the design size of the first cavity 26, the second cavity 27 and the third cavity 28 is obtained by technicians after a large number of experiments. The profile further comprises an upper triangular cavity 29a and a lower triangular cavity 29b, which are located on both sides of the inclined support plate 25. If the inclined support plate 25 is not provided, the upper triangular cavity 29a and the lower triangular cavity 29b are located in a third cavity. The design of the inclined support plate 25 divides the original third cavity into the upper triangular cavity 29a and the lower triangular cavity 29b. The upper triangular cavity 29a is a cavity formed by the first vertical support plate 21, the second upper support plate 12 and the inclined support plate 25, and the lower triangular cavity 29b is a cavity formed by the second vertical support plate 22, the second horizontal support plate 24 and the inclined support plate 25. The triangular structure design can improve the strength and rigidity of the profile.

[0025] The embodiment further comprises a power battery box, such as Figure 2 and Figure 3As shown, including outer frame 3 and inner frame 4, the outer frame 3 and inner frame 4 are mainly made of high strength aluminum alloy processing and manufacturing, the power battery box is a functional part of installing automobile power battery module, several modules are loaded into the power battery box in series and parallel way after busbar laser welding. The outer frame 3 includes first side beam 31a and second side beam 31b and third side beam 32 and fourth side beam 33, the first side beam 31a is made of the above profile, the double cross structure of the profile inner support type plate 2 and the design of the inclined support plate 25 make the power battery box have excellent rigidity and strength, and it is not easy to deform or damage after being hit, the design of the profile support groove 17 makes the inner side of the first side beam 31a have the function of support. The central position of the first side beam 31a is provided with positioning member 311, the two sides of the positioning member 311 on the first side beam 31a are provided with a plurality of side beam sleeves 314, in this embodiment, the two sides of the positioning member 311 are respectively provided with three side beam sleeves 314, the inner side of the first side beam 31a is provided with first opening 315 and second opening 316, wherein the first opening 315 is located near the central position of the inner side of the first side beam 31a, and the second opening 316 is located at the end side position of the inner side of the first side beam 31a. One end of the first side beam 31a is provided with an inclined cut part 312, the inclined cut part 312 is provided with an inclined cover plate 313, the design of the inclined cut part 312 makes the outer surface of the first side beam 31a more beautiful, and the inclined cover plate 313 installed on the inclined cut part 312 enhances the dustproof and waterproof performance of the power battery box. The inclined cover plate 313 is formed by stamping of thin aluminum alloy material, which can be thinned to 1mm.

[0026] The second side beam 31b in the outer frame 3 is also made of the above profile, the second side beam 31b and the first side beam 31a are symmetrically arranged on the two sides of the power battery box, and the double cross structure of the profile inner support type plate 2 and the design of the inclined support plate 25 also make the second side beam 31b have excellent rigidity and strength, and it is not easy to deform or damage after being hit, the design of the profile support groove 17 makes the inner side of the second side beam 31b also have the function of support. The second side beam 31b is also provided with positioning member 311, a plurality of side beam sleeves 314, inclined cut part 312 and inclined cover plate 313 installed on the inclined cut part 312. The two ends of the third side beam 32 in the outer frame 3 are respectively connected with the inclined cut part 312 of the first side beam 31a and the second side beam 31b, the outer side of the third side beam 32 is provided with first lug 321 and second lug 322, the first lug 321 and the second lug 322 are close to the two ends of the outer side of the third side beam 32, the outer side of the third side beam 32 is also provided with water inlet pipe 323 and water outlet pipe 324. The fourth side beam 33 in the outer frame 3 is arranged on the opposite side of the third side beam 32.

[0027] The outer frame 3 further comprises a first step beam 34 and a second step beam 35, and a first inclined beam 36 and a second inclined beam 37, the first step beam 34 is arranged in parallel with the first side beam 31a, one end of the first side beam 31a and the first step beam 34 is connected by the first inclined beam 36, the first inclined beam 36 is arranged inwardly, in the embodiment, the included angle between the first inclined beam 36 and the first step beam 34 is 142 degrees, the second step beam 35 is arranged in parallel with the second side beam 31b, one end of the second side beam 31b and the second step beam 35 is connected by the second inclined beam 37, the second inclined beam 37 is arranged inwardly, in the embodiment, the included angle between the second inclined beam 37 and the second step beam 35 is also 142 degrees. The design of the first inclined beam 36 and the second inclined beam 37 arranged inwardly, and the first step beam 34 and the second step beam 35 optimizes the space occupied by the power battery box. The two ends of the fourth side beam 33 are connected with the two ends of the first step beam 34 and the second step beam 35 respectively.

[0028] The inner frame 4 comprises a first main cross beam 41a and a second main cross beam 41b, and a third main cross beam 42, the center of the first main cross beam 41a and the center of the second main cross beam 41b are connected with the third main cross beam 42, the height of the third main cross beam 42 is greater than the height of the first main cross beam 41a and the second main cross beam 41b, the height of the first main cross beam 41a is consistent with the height of the second main cross beam 41b. The first main cross beam 41a is provided with a cross beam sleeve 411, in the embodiment, two cross beam sleeves 411 are symmetrically arranged on the first main cross beam 41a; the second main cross beam 41b is also provided with a cross beam sleeve 411, in the embodiment, two cross beam sleeves 411 are also symmetrically arranged on the second main cross beam 41b; in the embodiment, the four cross beam sleeves 411 arranged on the first main cross beam 41a and the second main cross beam 41b constitute four vertices of a rectangle. The design of the cross beam sleeve 411 arranged on the first main cross beam 41a and the second main cross beam 41b, and the height of the third main cross beam 42 being greater than the height of the first main cross beam 41a and the second main cross beam 41b, can ensure that there is no electric leakage or conduction between the modules, thereby preventing fire and having good safety performance. The two ends of the third main cross beam 42 are connected with the inner side surfaces of the first side beam 31a and the second side beam 31b respectively, a first groove 421 is formed at the connection between the third main cross beam 42 and the inner side surface of the first side beam 31a, a third groove 423 is formed at the connection between the third main cross beam 42 and the inner side surface of the second side beam 31b, and a second groove 422 is further arranged on the third main cross beam 42 near the connection between the third main cross beam 42 and the first main cross beam 41a.

[0029] The inner frame 4 also includes end-side support blocks 47 and intermediate support blocks 48. In this embodiment, two end-side support blocks 47 and two intermediate support blocks 48 are symmetrically arranged inside the power battery box. The cross-sections of the end-side support blocks 47 and intermediate support blocks 48 are shown below. Figure 2 The end support block 47, as shown, is convex in shape. It includes a first upper convex portion 472, a first lower convex portion 473, and a first support portion 471. The middle support block 48 includes a second upper convex portion 482, a second lower convex portion 483, and a second support portion 481. The first upper convex portion 472 and the first lower convex portion 473 on the end support block 47, and the second upper convex portion 482 and the second lower convex portion 483 on the middle support block 48, increase the contact area between the first support portion 471 and the second support portion 481 and the module installed in the power battery box. The convex cross-section of the end support block 47 and the middle support block 48 helps to ensure that there is no leakage or conduction between the modules. One end support block 47 is connected to the third side beam 32 and the first side beam 31a, with a gap between the first upper protrusion 472 and the first lower protrusion 473 and the third side beam 32 and the first side beam 31a; another end support block 47 is connected to the third side beam 32 and the second side beam 31b, with a gap between the first upper protrusion 472 and the first lower protrusion 473 and the third side beam 32 and the second side beam 31b; one middle support block 48 is connected to the first main crossbeam 41a and the third side beam 32, with a gap between the second upper protrusion 482 and the second lower protrusion 483 and the third side beam 32; another middle support block 48 is connected to the second main crossbeam 41b and the third side beam 32, with a gap between the second upper protrusion 482 and the second lower protrusion 483 and the third side beam 32.

[0030] The inner frame 4 also includes a first crossbeam 43, a second crossbeam 44, and a third crossbeam 45. The two ends of the first crossbeam 43 are connected to the inner surfaces of one end of the non-oblique section of the first side beam 31a and one end of the non-oblique section of the second side beam 31b. A fourth groove 431 is formed at the connection between the first crossbeam 43 and the inner surface of the first side beam 31a, and a sixth groove 433 is formed at the connection between the first crossbeam 43 and the inner surface of the second side beam 31b. A fifth groove 432 is also provided on the first crossbeam 43 near its connection with the first main crossbeam 41a. The first crossbeam 43 is arranged parallel to the third main crossbeam 42. The first main crossbeam 41a and the second main crossbeam 41b are perpendicularly connected to one side of the first crossbeam 43. The height of the first crossbeam 43 is greater than the height of the first main crossbeam 41a and the second main crossbeam 41b. The two ends of the second crossbeam 44 are connected to the upper end of the first crossbeam 43 and the inner surface of the upper end of the fourth side beam 33. A groove is formed at the connection between the upper end inner surface of the second crossbeam 44 and the fourth side beam 33. The height of the second crossbeam 44 is the same as the height of the first crossbeam 43. The second crossbeam 44 is parallel to the second step beam 35, and there is a gap between the second crossbeam 44 and the second step beam 35. The two ends of the third crossbeam 45 are connected to the lower middle part of the first crossbeam 43 and the inner surface of the lower middle part of the fourth side beam 33. A groove is formed at the connection between the third crossbeam 45 and the inner surface of the lower middle part of the fourth side beam 33. A groove is also formed in the middle of the third crossbeam 45. The height of the third crossbeam 45 is the same as the height of the first crossbeam 43. The third crossbeam 45 is parallel to the second crossbeam 44.

[0031] The aforementioned power battery housing also includes a base plate 5, which is located on the back of the outer frame 3 and the inner frame 4. Figure 3 As shown, the rear cover plate 51 is installed to the base plate 5 from the back through a series of holes in the base plate 5. The rear cover plate 51 is provided with a first bracket 511 and a second bracket 512, both of which are in a U-shape. In this structure, the two ends of the first bracket 511 are connected to the rear cover plate 51, while the middle of the second bracket 512 is connected to the rear cover plate 51. A thin crossbeam 46 is provided diagonally above the rear cover plate 51. The two ends of the thin crossbeam 46 are connected to the lower middle part of the first crossbeam 43 and the lower middle inner side of the fourth side beam 33. The thin crossbeam 46 is arranged parallel to the third crossbeam 45 and located below the third crossbeam 45. The thin crossbeam 46 serves as a fuse bracket.

[0032] The main process flow of the power battery box includes a rear cover plate 51 sub-assembly process flow, a side beam sub-assembly process flow and the power battery box assembly process flow. The rear cover plate 51 sub-assembly process flow includes: after the incoming material processing is completed, the required hole positions are machined on the rear cover plate 51 using a milling machine, and then sub-assembly spot welding and sub-assembly riveting are sequentially performed. The side beam sub-assembly process flow includes: after the incoming material processing is completed, sawing, milling and cleaning are sequentially performed, and then sub-assembly welding and sub-assembly riveting are sequentially performed. The power battery box assembly process flow includes: the parts of the assembly frame are welded together using cold metal transfer welding technology, the frame after welding is polished, then the bottom plate 5 is connected with the frame using laser welding and friction stir welding, the sleeve and the inner and outer frames are welded, the front of the assembly is machined using a CNC device, then manual repair welding and polishing are performed on the parts that cannot be completely processed by automatic welding, then the frame is subjected to air tightness test and treatment, and the assembly is thoroughly cleaned, then the front of the assembly is subjected to riveting operation, and the back of the assembly is subjected to rubberizing, the rubber material in this embodiment is foam, then the bottom guard plate on the back of the power battery box is installed using a new self-tapping riveting technology, then the assembly is assembled, and the assembly is subjected to air tightness test and treatment again to ensure that it has good sealing performance, then the assembly is subjected to size detection to ensure that it meets the design specifications, finally, laser coding, appearance detection and cleaning and packaging are performed.

[0033] The above-described embodiments are only the preferred schemes of the present application, and do not limit the present application in any form. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some of the technical features, as long as the modifications and equivalent replacements and improvements are within the spirit and principles of the present application.

Claims

1. A profile, characterized in that, include: An outer support plate (1) is provided with a support groove (17) on the left side. The inner support plate (2) is double cross-shaped and includes a diagonal support plate (25) with an upper triangular cavity (29a) and a lower triangular cavity (29b) on both sides respectively. The support groove (17) is formed by the left end of the first upper support plate (11), the left end of the lower support plate (15), and the left support plate (16). The support groove (17) includes a horizontal part (171), an inclined part (172), a first arc-shaped part (173), and a second arc-shaped part (174). The inner support plate (2) also includes a first vertical support plate (21). One end of the inclined support plate (25) is connected to the length center of the first vertical support plate (21). A second vertical support plate (22) is provided parallel to the right side of the first vertical support plate. The outer support plate (1) also includes a second upper support plate (12) and a second right support plate (14). The inner support plate (2) also includes a first horizontal support plate (23) and a second horizontal support plate (24). One end of the second horizontal support plate is connected to the length center of the second right support plate. The second horizontal support plate is parallel to the second upper support plate.

2. The profile according to claim 1, characterized in that, The outer support plate (1) includes a horizontally arranged first upper support plate (11) and a lower support plate (15) and a vertically arranged left support plate (16). The first upper support plate (11) is located diagonally above the second upper support plate (12). The length of the second upper support plate (12) is greater than the length of the first upper support plate (11). The first upper support plate (11) and the second upper support plate (12) are connected by a vertically arranged first right support plate (13) and a third arc-shaped part (18).

3. A profile according to claim 1 or 2, characterized in that, The angle between the inclined support plate and the upper part of the first vertical support plate is set between 30° and 45°. The first vertical support plate (21) and the second vertical support plate (22) divide the second horizontal support plate (24) into three segments, of which the two segments on the left are of equal length, and the segment on the right is longer than the sum of the lengths of the two segments on the left.

4. A profile according to claim 1 or 2, characterized in that, The first horizontal support plate (23) is located in the horizontal extension direction of the second upper support plate (12), and the first horizontal support plate and the second upper support plate are on the same horizontal plane.

5. A profile according to claim 1 or 2, characterized in that, It also includes a first cavity (26), a second cavity (27), and a third cavity (28). The third cavity (28) is located below the first cavity (26), and the second cavity (27) is located diagonally below the first cavity (26). The first cavity (26) and the third cavity (28) have the same width, and the second cavity (27) and the third cavity (28) have the same height. The width of the first cavity (26) and the second cavity (27) is greater than the height, and the height of the third cavity (28) is greater than the width. The first cavity is the cavity inside the protrusion provided on the top of the profile.

6. A power battery housing, characterized in that, include: The first side beam (31a) is made of a profile as described in any one of claims 1-5; The end support block (47) and the middle support block (48) have a convex cross-section. The first main crossbeam (41a) is provided with a crossbeam sleeve (411) thereon. The end-side support block (47) includes a first upper convex part (472) and a first lower convex part (473). The end-side support block (47) is connected to the third side beam (32) and the first side beam (31a), and there are gaps between the first upper convex part and the first lower convex part and the third side beam and the first side beam respectively.

7. A power battery housing according to claim 6, characterized in that, One end of the first side beam (31a) is provided with a beveled part (312), and an inclined cover plate (313) is installed on the beveled part (312). The upper surface of the first side beam (31a) is provided with a positioning part (311) and a plurality of side beam sleeves (314), and the inner side surface of the first side beam (31a) is provided with a first opening (315) and a second opening (316).

8. A power battery housing according to claim 6, characterized in that, The intermediate support block (48) includes a second upper convex part (482) and a second lower convex part (483). The intermediate support block (48) is connected to the first main crossbeam (41a) and the third side beam (32). The center of the first main crossbeam (41a) is connected to the third main crossbeam (42), and the height of the third main crossbeam (42) is greater than the height of the first main crossbeam (41a). There are gaps between the second upper convex part and the second lower convex part and the third side beam respectively. The two ends of the third side beam (32) in the outer frame (3) are respectively connected to the beveled parts (312) of the first side beam (31a) and the second side beam (31b), and the outer side surface of the third side beam (32) is provided with a first hanging ear (321) and a second hanging ear (322).

9. A power battery housing according to claim 6, 7, or 8, characterized in that, It further includes a first stepped beam (34), a second stepped beam (35) and a second side beam (31b). The first side beam (31a) and the first stepped beam (34) are connected by a first inclined beam (36), and the first inclined beam (36) is inclined inwards. The second side beam (31b) and the second stepped beam (35) are connected by a second inclined beam (37), and the second inclined beam (37) is inclined inwards. The outer side surface of the third side beam (32) is further provided with a water inlet pipe (323) and a water outlet pipe (324). The included angle between the first inclined beam (36) and the first stepped beam (34) and the included angle between the second inclined beam (37) and the second stepped beam (35) are both 142 degrees.

10. A power battery housing according to claim 6, 7, or 8, characterized in that, It further includes a rear cover plate (51). The rear cover plate (51) is provided with a first bracket (511) and a second bracket (512). A thin crossbeam (46) is provided obliquely above the rear cover plate (51). Both ends of the first bracket are connected to the rear cover plate, and the middle part of the second bracket is connected to the rear cover plate. Both the first bracket (511) and the second bracket (512) are in a shape of a capital "J".

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