Battery frame, battery box body and vehicle

Abstract

The utility model discloses a battery frame, battery box and vehicle, battery frame includes first border, front crossbeam, second border and rear crossbeam that connect end to end in proper order, first border and second border both include first rolling beam, front crossbeam and rear crossbeam both include second rolling beam. The battery frame provided by the utility model has the advantages of meeting the structural strength and being low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and particularly relates to a battery frame, a battery box body and a vehicle. Background Art

[0002] The battery box body assembly is a key structural load-bearing component of the power battery and also the largest structural component in terms of weight and volume in the battery PACK. Among them, the battery frame is the key to bearing the weight of the battery cell module, the structural safety of the battery pack and the vehicle collision safety in the box body assembly. Therefore, this component is usually designed with reinforcement, with a relatively large amount of material used and a relatively high cost.

[0003] In the related art, the side frames and cross beams of the battery frame are usually formed by welding aluminum extrusion profiles. Since the strength of aluminum alloy is relatively lower than that of steel, a more complex cross-section needs to be designed to improve the stiffness and anti-collision performance of the battery frame. This setting results in a relatively large amount of aluminum alloy used and has the defect of high cost compared with steel. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0005] For this reason, an embodiment of the utility model proposes a battery frame, which has the advantages of meeting the structural strength while having a low manufacturing cost.

[0006] An embodiment of the utility model also proposes a battery frame, a battery box body and a vehicle.

[0007] The battery frame of the embodiment of the utility model includes a first side frame, a front cross beam, a second side frame and a rear cross beam that are sequentially connected end to end. Both the first side frame and the second side frame include a first roll-formed beam, and both the front cross beam and the rear cross beam include a second roll-formed beam.

[0008] According to the battery frame of the embodiment of the utility model, the first side frame and the second side frame are set as the first roll-formed beams formed by roll forming, and the front cross beam and the rear cross beam are set as the second roll-formed beams formed by roll forming. Thus, each of the first side frame, the second side frame, the front cross beam and the rear cross beam is made of a steel plate that can be roll-formed. At this time, each of the first side frame, the second side frame, the front cross beam and the rear cross beam can have sufficient structural strength without designing a more complex cross-section, that is, while meeting the stiffness and collision performance of the battery frame, less steel plates are used, thereby effectively reducing the manufacturing cost of the battery frame.

[0009] In some embodiments, both the first roll-formed beam and the second roll-formed beam include a main body portion, a crush portion and a mounting portion that are sequentially arranged in the width direction. The main body portion is used to be connected to the bottom plate of the battery box body, and a mounting point connecting member is installed on the mounting portion.

[0010] In some embodiments, the main body portion encloses to form a first chamber. There is one first chamber, or there are at least two first chambers, and all the first chambers are arranged at intervals in the height direction.

[0011] In some embodiments, the main body portion of the first rolling beam encloses to form two first chambers, and the main body portion of the second rolling beam encloses to form one first chamber.

[0012] In some embodiments, a second chamber is formed by enclosing between the collapsible portion and the main body portion, and a third chamber is formed by enclosing between the mounting portion and the collapsible portion;

[0013] The dimension of the second chamber in the height direction gradually decreases towards the direction close to the main body portion, and the dimensions of any position of the part of the third chamber located at the mounting portion are equal in the height direction.

[0014] In some embodiments, the main body portion includes a first lower plate for connecting to the bottom plate and a side plate adjacent to the collapsible portion. The first lower plate includes a first plate, a bending plate and a second plate connected in sequence, and the free end of the second plate is connected to the lower end of the side plate;

[0015] The lower surface of the first plate is lower than the lower surface of the second plate. The lower surface of the bending plate and the lower surface of the second plate enclose to form a glue receiving groove. The width of the glue receiving groove is W, and the depth of the glue receiving groove is H, where 5mm < W < 20mm and 0.3mm < H < 2mm.

[0016] In some embodiments, the battery frame further includes a third rolling beam. The third rolling beam is connected between the two first rolling beams, the third rolling beam is arranged at intervals between the two second rolling beams, and the third rolling beam encloses to form at least one fourth chamber.

[0017] In some embodiments, both the first rolling beam and the second rolling beam are roll-formed from a steel plate, and the thickness of the steel plate is 1mm - 2mm.

[0018] In some embodiments, the main body portion of the first rolling beam is connected to the main body portion of the second rolling beam by butt welding.

[0019] The battery box according to the embodiment of the present invention includes a bottom plate and the battery frame as described in any of the above embodiments. Each of the first side frame, the front cross beam, the second side frame and the rear cross beam is connected to the bottom plate.

[0020] The technical advantages of the battery box according to the embodiment of the present invention are the same as those of the battery frame in the above embodiments, and will not be elaborated here.

[0021] In some embodiments, the first roller beam and the second roller beam each include a main body portion, a collapsed portion, and a mounting portion sequentially arranged along the width direction, the main body portion including a first lower plate;

[0022] The battery box includes a blind rivet, and the bottom plate includes a bottom guard plate and a liquid cooling plate. The head of the blind rivet is located between the bottom guard plate and the liquid cooling plate. The deformed portion of the blind rivet abuts against the side of the first lower plate facing away from the liquid cooling plate. A sealing gasket is sandwiched between the bottom guard plate and the liquid cooling plate.

[0023] In some embodiments, the liquid cooling plate is bonded to the first lower plate.

[0024] In some embodiments, the battery frame further includes a third roller beam, the third roller beam being connected between the two first roller beams, the third roller beam being spaced apart and arranged between the two second roller beams, and the third roller beam including a second lower plate;

[0025] The battery box includes a double-step sealed rivet nut and a bolt, and the bottom plate includes a bottom guard plate and a liquid cooling plate. One step of the double-step sealed rivet nut is sandwiched between the bottom guard plate and the liquid cooling plate, and the other step abuts against the side of the second lower plate away from the liquid cooling plate. The bolt passes through the bottom guard plate and engages with the double-step sealed rivet nut thread.

[0026] A vehicle according to an embodiment of the present invention includes a battery box as described in any of the above embodiments.

[0027] The technical advantages of the vehicle according to the embodiment of the present invention are the same as the technical advantages of the battery box of the above embodiment, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of a battery box according to an embodiment of the present invention.

[0029] Figure 2 It is an exploded view of a battery box according to an embodiment of the present utility model.

[0030] Figure 3 This is a partial enlarged view of the battery frame at the connection between the first roller beam and the second roller beam according to an embodiment of the present utility model.

[0031] Figure 4 It is a partial cross-sectional view of the battery frame at the connection between the first roller beam and the bottom guard plate according to an embodiment of the present utility model.

[0032] Figure 5 It is a partial cross-sectional view of the battery frame at the connection between the third roller beam and the bottom guard plate according to an embodiment of the present utility model.

[0033] Figure 6 It is a schematic diagram of the first rolling beam of the battery frame according to an embodiment of the present utility model.

[0034] Figure 7 It is a cross-sectional view of the first rolling beam of the battery frame according to an embodiment of the present utility model.

[0035] Figure 8 It is Figure 7 an enlarged view of part A in

[0036] Figure 9 It is a schematic diagram of the second rolling beam of the battery frame according to an embodiment of the present utility model.

[0037] Figure 10 It is a cross-sectional view of the second rolling beam of the battery frame according to an embodiment of the present utility model.

[0038] Figure 11 It is a cross-sectional view of the third rolling beam of the battery frame according to an embodiment of the present utility model.

[0039] Reference numerals:

[0040] 1. Battery frame; 11. First rolling beam; 111. Main body part; 1111. First chamber; 1112. First lower plate; 11121. First plate; 11122. Bending plate; 11123. Second plate; 11124. Glue holding groove; 1113. Side plate; 112. Crumple part; 1121. Second chamber; 113. Mounting part; 1131. Third chamber; 12. Second rolling beam; 13. Third rolling beam; 131. Fourth chamber; 132. Second lower plate; 2. Bottom protection plate; 3. Liquid cooling plate; 4. Blind rivet; 5. Double-step sealed rivet nut; 6. Bolt; 7. Sealing gasket. Detailed implementation manners

[0041] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0042] The following will be combined with Figures 1-11 describe the battery frame 1 according to an embodiment of the present utility model.

[0043] The battery frame 1 of the embodiment of the present utility model includes a first side frame, a front cross beam, a second side frame and a rear cross beam that are sequentially connected end to end. Both the first side frame and the second side frame include a first rolling beam 11, and both the front cross beam and the rear cross beam include a second rolling beam 12.

[0044] According to the battery frame 1 of the embodiment of the present utility model, the first side frame and the second side frame therein are set as the first roll-formed beams 11, and the front cross beam and the rear cross beam are set as the second roll-formed beams 12. Thus, each of the first side frame, the second side frame, the front cross beam and the rear cross beam is made of a steel plate that can be roll-pressed. At this time, each of the first side frame, the second side frame, the front cross beam and the rear cross beam does not need to design a more complex cross-section to have sufficient structural strength, that is, while meeting the stiffness and collision performance of the battery frame 1, less steel plate is used, thereby effectively reducing the manufacturing cost of the battery frame 1.

[0045] In some embodiments, such as Figure 6 , Figure 7 , Figure 9 and Figure 10 shown, both the first roll-formed beam 11 and the second roll-formed beam 12 include a main body portion 111, a crush portion 112 and a mounting portion 113 arranged in sequence along the width direction. The main body portion 111 is used to be connected to the bottom plate of the battery box body, and a mounting point connecting piece is installed on the mounting portion 113.

[0046] That is, a mounting point connecting piece is provided on each of the first side frame, the front cross beam, the second side frame and the rear cross beam. The distribution of the mounting point connecting pieces on the battery frame 1 is more uniform. When the battery frame 1 is connected to the vehicle body through the mounting point connecting pieces, the connection strength between the battery frame 1 and the vehicle body is effectively ensured. In addition, the setting of the crush portion 112 effectively improves the collision energy absorption effect of the first roll-formed beam 11 and the second roll-formed beam 12, and the safety performance of the battery cell module in the battery pack is higher.

[0047] Specifically, the mounting portion 113 includes an upper connecting plate and a lower connecting plate arranged at intervals in the height direction. Both the upper connecting plate and the lower connecting plate are provided with mounting holes, and the mounting point connecting piece is a sleeve that fits into the mounting holes and is welded to the upper connecting plate and the lower connecting plate.

[0048] In some embodiments, the main body portion 111 encloses to form a first chamber 1111. There is one first chamber 1111, or at least two first chambers 1111. All the first chambers 1111 are arranged at intervals in the height direction.

[0049] That is, the main body portion 111 can enclose to form only one first chamber 1111, thereby effectively reducing the roll-forming difficulty of each of the first roll-formed beam 11 and the second roll-formed beam 12, and further effectively reducing the roll-forming cost. It can also enclose to form at least two first chambers 1111, that is, at least one reinforcing rib is provided in the main body portion 111, thereby effectively improving the structural strength of the first roll-formed beam 11 and the second roll-formed beam 12, and it is less likely to bend and deform when subjected to a side collision.

[0050] In some embodiments, such as Figure 7 and Figure 10As shown, the main body 111 of the first rolling beam 11 encloses to form two first chambers 1111, and the main body 111 of the second rolling beam 12 encloses to form one first chamber 1111.

[0051] The first rolling beam 11, that is, the first and second side frames, as structures more vulnerable to side collisions, by setting its main body 111 to enclose and form two first chambers 1111, effectively ensures the structural strength of the first and second side frames, avoiding bending and deformation when being collided and pressing and damaging the battery cell module, and the use safety of the battery cell module is high. At the same time, for the second rolling beam 12 that has no force requirement for anti-collision against side pillar collision of the vehicle body, one first chamber 1111 is provided, thereby reducing the weight and cost of the second rolling beam 12.

[0052] Specifically, as Figure 7 shown, the first rolling beam 11 has a total of four chambers and has four solder joints. As Figure 10 shown, the second rolling beam 12 has a total of three chambers and has three solder joints.

[0053] In some embodiments, as Figure 7 and Figure 10 shown, a second chamber 1121 is enclosed between the crushable part 112 and the main body 111, and a third chamber 1131 is enclosed between the mounting part 113 and the crushable part 112. The dimension of the second chamber 1121 in the height direction gradually decreases towards the direction close to the main body 111, and the dimensions of any position of the part of the third chamber 1131 located at the mounting part 113 in the height direction are equal.

[0054] By setting the dimension of the second chamber 1121 in the height direction to gradually decrease towards the direction close to the main body 111, when being collided from the side, the crushable part 112 is more likely to be crushed and deformed, thereby effectively meeting the collision energy absorption requirement and effectively avoiding excessive force being transmitted to the main body 111 and causing the main body 111 to bend and deform. By setting the dimensions of any position of the part of the third chamber 1131 located at the mounting part 113 in the height direction to be equal, the upper and lower connecting plates of the mounting part 113 are parallel to each other and jointly realize the connection with the mounting point connecting piece, ensuring the connection reliability between the mounting part 113 and the vehicle body.

[0055] As Figure 7 and Figure 10 shown, the second chamber 1121 is triangular, and the third chamber 1131 is a right trapezoid.

[0056] In some embodiments, as Figure 7 and Figure 8As shown, the main body 111 includes a first lower plate 1112 for connecting to the bottom plate and a side plate 1113 adjacent to the collapsible part 112. The first lower plate 1112 includes a first plate 11121, a bent plate 11122, and a second plate 11123 that are connected in sequence. The free end of the second plate 11123 is connected to the lower end of the side plate 1113. The lower surface of the first plate 11121 is lower than the lower surface of the second plate 11123. The lower surface of the bent plate 11122 and the lower surface of the second plate 11123 enclose a glue receiving groove 11124. The width of the glue receiving groove 11124 is W, and the depth of the glue receiving groove 11124 is H, where 5 mm < W < 20 mm and 0.3 mm < H < 2 mm.

[0057] A sealant is clamped between the main body 111 and the bottom plate, thereby ensuring the connection sealing performance between the bottom plate and the battery frame 1. Among them, part of the sealant is accommodated in the glue receiving groove 11124. By setting 5 mm < W < 20 mm and 0.3 mm < H < 2 mm, it is ensured that the sealant located between the main body 111 and the bottom plate has a larger dosage, and further better ensures the connection sealing performance between the bottom plate and the main body 111.

[0058] Specifically, the width W of the glue receiving groove 11124 can be 5 mm, 10 mm, 15 mm, and 20 mm, and the depth H can be 0.3 mm, 1 mm, and 2 mm.

[0059] In some embodiments, as Figure 2 and Figure 11 shown, the battery frame 1 further includes a third roll-pressed beam 13. The third roll-pressed beam 13 is connected between two first roll-pressed beams 11. The third roll-pressed beam 13 is arranged at intervals between two second roll-pressed beams 12. The third roll-pressed beam 13 encloses at least one fourth chamber 131.

[0060] The setting of the third roll-pressed beam 13 further improves the structural strength of the battery frame 1, and by using the roll-forming method, the manufacturing cost of the third roll-pressed beam 13 can be effectively reduced.

[0061] Specifically, as Figure 11 shown, there are two fourth chambers 131 arranged at intervals in the height direction. The third roll-pressed beam 13 is integrally roll-formed from a steel plate. The two free ends of the steel plate are respectively welded to the two ends of the middle plate located between the two fourth chambers 131.

[0062] In some embodiments, both the first roll-pressed beam 11 and the second roll-pressed beam 12 are roll-formed from a steel plate, and the thickness of the steel plate is from 1 mm to 2 mm.

[0063] The first rolled beam 11 and the second rolled beam 12 made of steel and having a thickness between 1 mm and 2 mm can have sufficient structural strength without the need for designing a complex cross-sectional shape, further reducing the production cost of the battery frame 1.

[0064] Specifically, the thickness of the steel plates used to make the first roll-pressed beam 11 and the second roll-pressed beam 12 may be 1 mm, 1.5 mm, and 2 mm.

[0065] In some embodiments, the main body 111 of the first roll-type beam 11 is welded to the main body 111 of the second roll-type beam 12. This effectively improves the sealing performance of the connection between the first roll-type beam 11 and the second roll-type beam 12, meeting the waterproof requirements of the battery cell module in the battery frame 1.

[0066] like Figure 3 As shown, the outer contour dimensions of the main body 111 of the first roller beam 11 are the same as the outer contour dimensions of the main body 111 of the second roller beam 12, and the side surfaces of the main body 111 of the first roller beam 11 and the end surfaces of the main body 111 of the second roller beam 12 are bonded and welded together.

[0067] The battery box according to an embodiment of the present invention includes a bottom plate and a battery frame 1 as in any of the above embodiments, and each of the first side frame, the front cross beam, the second side frame and the rear cross beam is connected to the bottom plate.

[0068] The technical advantages of the battery box according to the embodiment of the present invention are the same as the technical advantages of the battery frame 1 in the above embodiment, and will not be repeated here.

[0069] In some embodiments, as Figure 4 As shown, the first roller beam 11 and the second roller beam 12 each include a main portion 111, a collapsed portion 112, and a mounting portion 113 arranged sequentially along the width direction. The main portion 111 includes a first lower plate 1112. The battery case includes a blind rivet 4. The bottom plate includes a bottom guard plate 2 and a liquid cooling plate 3. The head of the blind rivet 4 is located between the bottom guard plate 2 and the liquid cooling plate 3. The deformed portion of the blind rivet 4 abuts the side of the first lower plate 1112 facing away from the liquid cooling plate 3. A sealing gasket 7 is sandwiched between the bottom guard plate 2 and the liquid cooling plate 3.

[0070] Blind rivets 4 are used to connect the liquid cooling plate 3 to the first lower plate 1112 of the main body 111. The heads of the blind rivets 4 can tightly abut against the lower surface of the liquid cooling plate 3, effectively ensuring the sealing performance at the connection between the liquid cooling plate 3 and the first lower plate 1112. The provision of a sealing gasket 7 effectively ensures the sealing performance of the connection between the bottom guard plate 2 and the liquid cooling plate 3.

[0071] Specifically, the sealing gasket 7 extends along the circumference of the bottom guard plate 2 , and has an escape hole for accommodating the head of the blind rivet 4 .

[0072] Meanwhile, the liquid cooling plate 3 is also bonded to the first lower plate 1112 by structural adhesive, thereby further improving the connection sealing performance between the liquid cooling plate 3 and the first lower plate 1112.

[0073] In some embodiments, as Figure 5 shown, the battery frame 1 further includes a third roll-formed beam 13. The third roll-formed beam 13 is connected between two first roll-formed beams 11, is arranged at intervals between two second roll-formed beams 12, and the third roll-formed beam 13 includes a second lower plate 132. The battery box body includes a double-step sealed rivet nut 5 and a bolt 6. The bottom plate includes a bottom guard plate 2 and a liquid cooling plate 3. One step of the double-step sealed rivet nut 5 is clamped between the bottom guard plate 2 and the liquid cooling plate 3, and the other step abuts against the side of the second lower plate 132 facing away from the liquid cooling plate 3. The bolt 6 passes through the bottom guard plate 2 and is in threaded cooperation with the double-step sealed rivet nut 5.

[0074] The double-step sealed rivet nut 5 can lock together three different materials (steel + aluminum + aluminum) of the second lower plate 132, the liquid cooling plate 3, and the bottom guard plate 2, which not only ensures the overall structural strength of the battery box body but also effectively ensures the sealing performance at the connection between the bottom guard plate 2 and the liquid cooling plate 3, and at the connection between the liquid cooling plate 3 and the second lower plate 132. Moreover, only by passing the bolt 6 through the bottom guard plate 2 from bottom to top and being in threaded cooperation with the double-step sealed rivet nut 5 can the above three be connected, and the assembly efficiency of the battery box body is high.

[0075] The vehicle according to an embodiment of the present invention includes the battery box body as described in any of the above embodiments.

[0076] The technical advantages of the vehicle according to an embodiment of the present invention are the same as those of the battery box body in the above embodiments and will not be elaborated here.

[0077] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0079] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0080] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0081] In the present utility model, terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0082] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present utility model.

Claims

1. A battery frame, characterized in that, It comprises a first frame, a front crossbeam, a second frame and a rear crossbeam which are connected end to end in sequence. The first frame and the second frame both comprise a first roller beam, and the front crossbeam and the rear crossbeam both comprise a second roller beam.

2. The battery frame according to claim 1, characterized in that The first roller beam and the second roller beam each include a main body portion, a collapsed portion, and a mounting portion sequentially arranged along the width direction. The main body portion is used to be connected to the bottom plate of the battery box, and a mounting point connector is installed on the mounting portion.

3. The battery frame according to claim 2, characterized in that, The main body is surrounded to form a first cavity. There is one first cavity, or there are at least two first cavities. All the first cavities are arranged at intervals in the height direction.

4. The battery frame according to claim 3, characterized in that, The main body of the first roller beam is arranged to form two first cavities, and the main body of the second roller beam is arranged to form one first cavity.

5. The battery frame according to claim 2, characterized in that, A second chamber is formed between the collapsed portion and the main body, and a third chamber is formed between the mounting portion and the collapsed portion; The size of the second chamber in the height direction gradually decreases toward the main body, and the size of the third chamber in the height direction is equal at any position of the portion located on the mounting portion.

6. The battery frame according to claim 2, characterized in that, The main body includes a first lower plate connected to the bottom plate and a side plate adjacent to the collapsed portion, wherein the first lower plate includes a first plate, a bent plate, and a second plate connected in sequence, and a free end of the second plate is connected to the lower end of the side plate; The lower surface of the first plate is lower than the lower surface of the second plate. The lower surface of the bent plate and the lower surface of the second plate are arranged to form a glue-containing groove. The width of the glue-containing groove is W, and the depth of the glue-containing groove is H, wherein 5mm<W<20mm, 0.3mm<H<2mm.

7. The battery frame according to claim 1, characterized in that The battery frame further includes a third roller beam connected between the two first roller beams, and the third roller beam is arranged between the two second roller beams at intervals, and the third roller beam is arranged to form at least one fourth cavity.

8. The battery frame according to claim 1, characterized in that, The first rolled beam and the second rolled beam are both formed by rolling a steel plate, and the thickness of the steel plate is 1 mm to 2 mm.

9. The battery frame according to claim 1, characterized in that, The main body of the first roll-type beam and the main body of the second roll-type beam are connected by tailor welding.

10. A battery box body, characterized in that, It comprises a bottom plate and the battery frame according to any one of claims 1 to 9, wherein each of the first frame, the front crossbeam, the second frame and the rear crossbeam is connected to the bottom plate.

11. The battery box according to claim 10, characterized in that, The first roller beam and the second roller beam each include a main body portion, a collapsed portion, and a mounting portion sequentially arranged along the width direction, wherein the main body portion includes a first lower plate; The battery box includes a blind rivet, and the bottom plate includes a bottom guard plate and a liquid cooling plate. The head of the blind rivet is located between the bottom guard plate and the liquid cooling plate. The deformed portion of the blind rivet abuts against the side of the first lower plate facing away from the liquid cooling plate. A sealing gasket is sandwiched between the bottom guard plate and the liquid cooling plate.

12. The battery box according to claim 11, characterized in that, The liquid cooling plate is bonded to the first lower plate.

13. The battery box according to claim 10, characterized in that, The battery frame further includes a third roller beam, the third roller beam being connected between the two first roller beams, the third roller beam being spaced apart and arranged between the two second roller beams, and the third roller beam including a second lower plate; The battery box includes a double-step sealed rivet nut and a bolt, and the bottom plate includes a bottom guard plate and a liquid cooling plate. One step of the double-step sealed rivet nut is sandwiched between the bottom guard plate and the liquid cooling plate, and the other step abuts against the side of the second lower plate away from the liquid cooling plate. The bolt passes through the bottom guard plate and engages with the double-step sealed rivet nut thread.

14. A vehicle, characterized in that, Comprising a battery case according to any one of claims 10-13.

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