Split type box girder structure and battery box

Abstract

The utility model discloses a split type box girder structure and a battery box, and relates to the technical field of new energy batteries. The split type box girder structure comprises a main girder, a stiffening beam is arranged above the main girder, one or more main girder through holes penetrating through the main girder are formed in the top of the main girder, fixing holes corresponding to the main girder through holes are formed in the stiffening beam, and stiffening beam mounting holes for fixing the stiffening beam to a battery box edge beam are formed in the two ends of the stiffening beam. Nut sleeve assemblies are arranged in the through holes of the main beam and penetrate through the fixing holes to fix the reinforcing beam to the upper portion of the main beam. The battery box comprises a bottom protective plate, a boundary beam and a head-tail beam are fixed on the bottom protective plate, a partition plate is arranged in the battery box and divides the battery box into an electric appliance bin and a battery bin, and a split box beam structure is mounted in the battery bin. Compared with a traditional box girder, the height of the box girder is not affected, meanwhile, a mechanical clamping jaw can be used for installing a battery module conveniently, and the weight is lighter.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy battery technical field, concretely relates to a split type box girder structure and battery box. BACKGROUND

[0002] With the rapid development of new energy automobile industry, the performance and reliability of battery box as the core component of electric vehicle are widely concerned. In actual use, battery box is affected by various vibration environments, such as bumping in vehicle driving process, vibration in transportation process, etc. These vibrations may cause damage or deformation of internal structural parts of battery box, thereby affecting the performance and safety of battery. Therefore, it is of important practical significance to study and optimize the whole package mode of battery box to improve its reliability and durability in vibration environment.

[0003] In the prior art, the height, width and cavity number of the box girder of the battery box are usually increased to improve the strength and rigidity of the overall structure, so as to resist damage or deformation of internal structural parts of the battery box caused by vibration during vehicle driving. However, when the lowest point height of the box girder is higher than that of the battery module, the battery module cannot be smoothly put into the box by the module clamping jaw, and the increased height of the battery box girder will also affect the lightweight demand of the vehicle. SUMMARY

[0004] The utility model provides a split type box girder structure and battery box to meet the convenient installation of battery module and the lighter weight compared with the traditional box girder.

[0005] To achieve the above-mentioned purpose, the utility model designs a split type box girder structure which comprises a main beam, a reinforcing beam is arranged above the main beam, one or more main beam through holes are arranged in the top of the main beam, a fixing hole corresponding to the main beam through hole is arranged on the reinforcing beam, reinforcing beam mounting holes for fixing the reinforcing beam on the side beam of the battery box are arranged at both ends of the reinforcing beam, a nut sleeve assembly is arranged in each main beam through hole, and the reinforcing beam is fixed above the main beam through the fixing hole by the nut sleeve assembly.

[0006] Preferably, the length of the reinforcing beam is equal to the length of the main beam.

[0007] Preferably, the nut sleeve assembly comprises an upper nut, a support cylinder, an inner sleeve and a lower nut connected in sequence from top to bottom, the support cylinder is arranged between the main beam through hole and the fixing hole, the outer wall top and bottom of the inner sleeve are respectively provided with external threads matched with the upper nut and the lower nut, the upper nut is arranged on the top of the support cylinder through the fixing hole, a limiting ring is arranged on the outer wall of the inner sleeve, the limiting ring is attached to the bottom of the battery bottom guard plate, the inner sleeve top sequentially passes through the battery bottom guard plate and the main beam through hole and is screwed with the upper nut in the inner sleeve, and the lower nut is screwed with the bottom of the inner sleeve.

[0008] Preferably, an annular platform is fixed above the fixing hole, the annular platform is fixed on the reinforcing beam, and a first sealing ring is arranged between the annular platform and the upper nut.

[0009] Preferably, a second sealing ring is arranged between the top of the supporting cylinder and the bottom of the reinforcing beam.

[0010] Preferably, a third sealing ring is arranged between the limiting ring and the bottom guard plate.

[0011] Preferably, a fourth sealing ring is arranged between the lower nut and the limiting ring.

[0012] Preferably, a weight-reducing cavity is arranged on the main beam.

[0013] The utility model discloses still design a kind of battery box, including bottom guard plate, the upper fixed edge beam and head-tail beam of bottom guard plate, the partition plate is equipped in the battery box, the partition plate divides into electrical appliance compartment and battery compartment, the battery compartment is installed with the split box beam structure of the described.

[0014] Preferably, two the inner wall of edge beam is fixed with inverted L support symmetrically, the top of inverted L support is equipped with the installation through-hole matched with reinforcing beam mounting hole, bolt is equipped in reinforcing beam mounting hole, and reinforcing beam is fixedly installed on two inverted L supports by bolt passing through reinforcing beam mounting hole.

[0015] Preferably, the bottom of bottom guard plate is equipped with nut mounting groove and bottom guard plate through-hole arranged in nut mounting groove, the inner sleeve passes through bottom guard plate through-hole and makes limiting ring close to bottom guard plate bottom, and lower nut is screwed on the bottom of inner sleeve and is arranged in nut mounting groove.

[0016] The utility model discloses beneficial effect:

[0017] 1, the utility model discloses a battery box's box beam is split into box main beam and reinforcing beam, and is installed respectively before and after battery module installation, i. e. reinforcing beam can be installed after battery module enters the case, i. e. box main beam can design height reduction, and after battery module enters the case successfully, rear-mounted reinforcing beam, to improve the whole package structural strength, so that battery box mode meets design requirement, ensure that box beam can smoothly install battery module while not affecting the strength and rigidity of battery box overall structure, improve installation efficiency and convenience.

[0018] 2, the utility model discloses a battery box's box beam is split into box main beam and reinforcing beam and is equipped with weight-reducing cavity on main beam, compared with the traditional box beam of same height, the space saved in reinforcing beam and box main beam reduces the weight of battery box's box beam, and it is helpful to promote the light weight level of car.

[0019] 3、The space between the reinforcing beam and the main beam can be used as a heat dissipation channel, which can more quickly guide the high-temperature and high-pressure gas to the explosion-proof valve direction.

[0020] 4、The utility model discloses a plurality of key parts are provided with sealing ring, such as annular platform and between upper nut, support cylinder top and reinforcing beam bottom, limiting ring and battery bottom guard plate between, lower nut and limiting ring between etc., ensure the sealing performance of battery box, prevent dust and moisture from entering, further improve the protection level and service life of battery box. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the perspective view of the split box beam structure of the utility model;

[0022] Figure 2 It is the perspective view of the main beam of the utility model;

[0023] Figure 3 It is the perspective view of the reinforcing beam of the utility model;

[0024] Figure 4 It is the perspective view of the nut sleeve assembly of the utility model;

[0025] Figure 5 It is Figure 4 The explosion effect diagram of the utility model;

[0026] Figure 6 It is the perspective view of the battery box of the utility model;

[0027] Figure 7 It is Figure 6 The enlarged view of A place;

[0028] Figure 8 It is the bottom view of the battery box of the utility model.

[0029] Reference signs:

[0030] 1 main beam, 11 main beam through hole, 12 weight reduction cavity,

[0031] 2 reinforcing beam, 21 fixed hole, 22 annular platform, 23 reinforcing beam mounting hole,

[0032] 3 nut sleeve assembly, 31 upper nut, 311 first sealing ring, 32 support cylinder, 321 second sealing ring, 33 inner sleeve, 331 limiting ring, 332 third sealing ring, 34 lower nut, 341 fourth sealing ring,

[0033] 4 bottom guard plate, 41 nut mounting groove,

[0034] 5 side beam, 51 inverted L support,

[0035] 6 head and tail beam. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved in the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and are not intended to limit the present application.

[0037] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0040] In the description of the present application, the reference to "one embodiment" or "some embodiments" and the like means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in other some embodiments" and the like appearing in different places in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized.

[0041] The present application will be further described below in conjunction with the drawings and specific embodiments.

[0042] Embodiment 1

[0043] As Figures 1-5The split box girder structure shown includes a main girder 1 with a weight-reducing cavity 12. A reinforcing beam 2 is provided above the main girder 1, and the length of the reinforcing beam 2 is equal to the length of the main girder 1. The two ends of the reinforcing beam 2 are provided with reinforcing beam mounting holes 23 for fixing the reinforcing beam to the side beam of the battery box. The top of the main girder 1 is provided with one or more through holes 11. The reinforcing beam 2 is provided with fixing holes 21 corresponding to the through holes 11. Nut sleeve assemblies 3 are provided in the through holes 11, and the nut sleeve assemblies 3 pass through the fixing holes 21 to fix the reinforcing beam 2 above the main girder 1.

[0044] The nut sleeve assembly 3 includes an upper nut 31, a support cylinder 32, an inner sleeve 33, and a lower nut 34 connected sequentially from top to bottom. The support cylinder 32 is located between the main beam through hole 11 and the fixing hole 21. The top and bottom of the outer wall of the inner sleeve 33 are respectively provided with external threads that mate with the upper nut 31 and the lower nut 34. The upper nut 31 passes through the fixing hole 21 to fix the reinforcing beam 2 to the top of the support cylinder 32. The outer wall of the inner sleeve 33 is provided with a limiting ring 331, which fits against the bottom of the battery bottom guard plate. The top of the inner sleeve 33 passes through the battery bottom guard plate and the main beam through hole 11 in sequence and is screwed to the upper nut 31 inside the inner sleeve 33. The lower nut 34 is screwed to the bottom of the inner sleeve 33.

[0045] An annular platform 22 is fixed above the fixing hole 21 and is fixed to the reinforcing beam 2. A first sealing ring 311 is provided between the annular platform 22 and the upper nut 31. A second sealing ring 321 is provided between the top of the support cylinder 32 and the bottom of the reinforcing beam 2. A third sealing ring 332 is provided between the limiting ring 331 and the battery bottom guard plate. A fourth sealing ring 341 is provided between the lower nut 34 and the limiting ring 331.

[0046] Example 2

[0047] like Figures 6-8 The battery box shown includes a bottom protective plate 4, on which side beams 5 and head and tail beams 6 are fixed. The battery box is provided with a partition 7, which divides the battery box into an electrical compartment and a battery compartment. The battery compartment is equipped with a split box beam structure as in Embodiment 1.

[0048] Two inverted L-shaped brackets 51 are symmetrically fixed on the inner walls of the two side beams 5. The top of the inverted L-shaped brackets 51 is provided with a mounting through hole that mates with the reinforcing beam mounting hole 23. Bolts are provided in the reinforcing beam mounting hole 23. The bolts pass through the reinforcing beam mounting hole 23 to fix the reinforcing beam 2 on the two inverted L-shaped brackets 51. The bottom of the bottom guard plate 4 is provided with a nut mounting groove 41 and a bottom guard plate through hole provided in the nut mounting groove 41. The inner sleeve 33 passes through the bottom guard plate through hole to make the limiting ring 331 fit tightly against the bottom of the bottom guard plate 4. The lower nut 34 is screwed to the bottom of the inner sleeve 33 and is provided in the nut mounting groove 41.

[0049] The process flow of assembling and installing the battery module is introduced as follows:

[0050] The bottom guard plate 4, the side beam 5 and the head and tail beam 6 are spliced into the outer frame body of the battery box, the liquid cooling plate is laid on the bottom guard plate 4, the partition plate 7 is installed to separate the battery box into the electrical bin and the battery bin, the main beam 1 is installed into the battery bin, the third sealing ring 332 is placed into the ring groove on the top of the limiting ring 331, the inner sleeve 33 passes through the main beam through hole 11, the fourth sealing ring 341 is placed on the top of the lower nut, the lower nut 34 is screwed onto the outer thread on the bottom of the outer wall of the inner sleeve 33, the battery module is installed into the battery bin by using the mechanical clamping jaw, since the height of the main beam 1 is lower than the height of the side beam 5 of the battery box, the mechanical clamping jaw can have a placing space to smoothly install the battery module into the battery bin, and the reinforcing beam 2 is installed after the battery module is installed.

[0051] The supporting cylinder 32 is sleeved into the top of the inner sleeve 33, the second sealing ring 321 is placed on the top of the supporting cylinder 32, the reinforcing beam 2 is installed above the main beam 1 through the inverted L-shaped support 51, the first sealing ring 311 is installed in the ring groove of the annular platform 22, and the upper nut 31 is screwed through the annular platform 22, the fixing hole 21 and the inner sleeve 33 in the supporting cylinder 32 in sequence.

[0052] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A split-type box girder structure, characterized in that: The main beam (1) is provided with a reinforcing beam (2) above it. The top of the main beam (1) is provided with one or more through holes (11) that pass through the main beam (1). The reinforcing beam (2) is provided with fixing holes (21) corresponding to the through holes (11) of the main beam. The two ends of the reinforcing beam (2) are provided with reinforcing beam mounting holes (23) for fixing the reinforcing beam to the side beam of the battery box. Nut sleeve assemblies (3) are provided in the through holes (11) of the main beam. The nut sleeve assemblies (3) pass through the fixing holes (21) to fix the reinforcing beam (2) above the main beam (1).

2. The split box girder structure according to claim 1, characterized in that: The nut and sleeve assembly (3) includes an upper nut (31), a support cylinder (32), an inner sleeve (33), and a lower nut (34) connected sequentially from top to bottom. The support cylinder (32) is located between the main beam through hole (11) and the fixing hole (21). The top and bottom of the outer wall of the inner sleeve (33) are respectively provided with external threads that mate with the upper nut (31) and the lower nut (34). The upper nut (31) passes through the fixing hole (21) to fix the reinforcing beam (2) to the top of the support cylinder (32). The outer wall of the inner sleeve (33) is provided with a limiting ring (331). The limiting ring (331) fits against the bottom of the battery bottom guard plate. The top of the inner sleeve (33) passes through the battery bottom guard plate and the main beam through hole (11) in sequence and is screwed to the upper nut (31) inside the inner sleeve (33). The lower nut (34) is screwed to the bottom of the inner sleeve (33).

3. The split box girder structure according to claim 2, characterized in that: An annular platform (22) is fixed above the fixing hole (21). The annular platform (22) is fixed on the reinforcing beam (2). A first sealing ring (311) is provided between the annular platform (22) and the upper nut (31).

4. The split box girder structure according to claim 2, characterized in that: The top of the support cylinder (32) and the bottom of the reinforcing beam (2) are provided with a second sealing ring (321).

5. The split box girder structure according to claim 2, characterized in that: A third sealing ring (332) is provided between the limiting ring (331) and the battery bottom guard plate.

6. The split box girder structure according to claim 2, characterized in that: A fourth sealing ring (341) is provided between the lower nut (34) and the limiting ring (331).

7. The split box girder structure according to claim 1, characterized in that: The main beam (1) is provided with a weight-reducing cavity (12).

8. A battery box, comprising a bottom protective plate (4), wherein a pair of side beams (5) and a pair of head and tail beams (6) are fixed on the bottom protective plate (4), characterized in that: The battery box is provided with a partition (7), which divides the battery box into an electrical compartment and a battery compartment. The battery compartment is equipped with a split box beam structure as described in claim 1.

9. The battery box according to claim 8, characterized in that: Two side beams (5) are symmetrically fixed with inverted L-shaped brackets (51). The top of the inverted L-shaped brackets (51) is provided with a mounting through hole that matches the mounting hole (23) of the reinforcing beam. The mounting hole (23) of the reinforcing beam is provided with a bolt. The bolt passes through the mounting hole (23) of the reinforcing beam to fix the reinforcing beam (2) on the two inverted L-shaped brackets (51).

10. The battery box according to claim 8, characterized in that: The bottom of the bottom guard plate (4) is provided with a nut mounting groove (41) and a bottom guard plate through hole provided in the nut mounting groove (41).

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