CN210489695U - Double-deck module support and battery package - Google Patents

Abstract

The utility model discloses a double-deck module support and battery package, wherein double-deck module support includes: support body and tip supporting leg. The end part of the bracket body is provided with a first matching part; the end supporting legs are arranged at two ends of the support body, second matching parts are arranged on the end supporting legs, and the first matching parts are suitable for being welded with the second matching parts in a matching mode. This double-deck module support is formed by support body and tip supporting leg cooperation tailor-welding, can make assembling of double-deck module support more convenient and can make the bulk strength and the stability of double-deck module support better.

Description

Double-deck module support and battery package

Technical Field

The utility model relates to a battery package technical field particularly, relates to a double-deck module support and battery package.

Background

In the related art, the double-layer module support supports the upper-layer battery module on the lower-layer battery module to play an important role in supporting and connecting, but the strength and the stability of the traditional double-layer module support are poor, and an improvement space exists.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a double-deck module support, this double-deck module support tailor-welding forms, and bulk strength and stability are better.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a dual layer module rack comprising: the bracket comprises a bracket body, wherein a first matching part is arranged at the end part of the bracket body; the end supporting legs are arranged at two ends of the support body, second matching parts are arranged on the end supporting legs, and the first matching parts are suitable for being welded with the second matching parts in a matching mode.

Further, the upper surface of the first mating portion is lower than the upper surface of the second mating portion.

Further, the first fitting portion includes: a first projection projecting outward from an end of the holder body, the second fitting portion including: the first groove is inwards sunken from the side face of the end supporting leg, and the first protrusion is suitable for being matched and embedded into the first groove.

Furthermore, the first bulges are multiple, a second groove is formed between every two adjacent first bulges, the first grooves are multiple, a second bulge is formed between every two adjacent first grooves, and the second bulge is suitable for being embedded into the second groove in a matched mode.

Further, the top corners of the first protrusion and the second protrusion are both formed with a guide fillet.

Further, the end support leg includes: the first part is connected with the second part, a mounting hole is formed in the first part, and the thickness of the second part is smaller than that of the first part.

Further, the second part is provided with a lightening hole which penetrates through the second part along the vertical direction.

Furthermore, a weight-reducing cavity which penetrates along the transverse direction is formed inside the bracket body.

Furthermore, a plurality of reinforcing vertical ribs are arranged in the weight reducing cavity.

Compared with the prior art, double-deck module support have following advantage:

double-deck module support, this double-deck module support is formed by support body and tip supporting leg cooperation tailor-welding, can make assembling of double-deck module support more convenient and can make the bulk strength and the stability of double-deck module support better.

Another object of the present invention is to provide a battery pack, which includes the above-mentioned double-layer module bracket, the stability of the battery pack is better.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is an exploded view of a battery pack according to an embodiment of the present invention;

fig. 2 is a schematic partial structure diagram of a battery pack according to an embodiment of the present invention;

fig. 3 is a schematic partial structure diagram of a battery pack according to an embodiment of the present invention;

fig. 4 is an exploded view of a partial structure of a battery pack according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a double-layered module holder according to an embodiment of the present invention;

fig. 6 is an exploded view of a double-deck module support according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a double-layered module holder according to an embodiment of the present invention;

fig. 8 is an exploded view of a double-deck module support according to an embodiment of the present invention;

fig. 9 is a side view of a dual layer module holder according to an embodiment of the present invention;

fig. 10 is a schematic partial structure diagram of a battery pack according to an embodiment of the present invention;

fig. 11 is a schematic partial structure diagram of a battery pack according to an embodiment of the present invention;

fig. 12 is an exploded view of a battery module according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a tray according to an embodiment of the present invention.

Description of reference numerals:

1000-battery pack, 100-double-layer module support, 1-support body, 11-first matching part, 2-end supporting leg, 21-second matching part, 111-first protrusion, 211-first groove, 112-second groove, 212-second protrusion, 3-guiding fillet, 22-first part, 23-second part, 221-mounting hole, 231-lightening hole, 12-lightening cavity, 121-reinforcing vertical rib, 200-battery module, 210-heat-insulating gasket, 220-lower shell, 230-heat-insulating space, 240-tray, 241-mounting groove, 2411-buffering fillet, 221-lower shell beam, 201-module body, 202-module end plate, 203-ribbon, 2031-transverse segment, 2032-longitudinal section, 2021-limit groove, 20211-straight groove section, 20212-arc transition groove section, 2022-protrusion, 2023-inclined section, 200 a-upper battery module, 200 b-lower battery module, 400-first short bolt, 500-second short bolt, 600-long bolt, 610-first long bolt, 620-second long bolt, 242-main body support part, 243-edge fixing part, 244-weight reduction cavity, 245-support vertical rib.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

A double-deck module support 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 13.

According to the utility model discloses double-deck module support 100 can include: a bracket body 1 and an end support leg 2.

As shown in fig. 1 to 8, the double-layered module holder 100 is adapted to be supported between an upper layer battery module 200a and a lower layer battery module 200b to arrange the upper layer battery module 200a and the lower layer battery module 200b together, and plays a role of starting and stopping, wherein the holder body 1 is a structure mainly carrying the upper layer battery module 200a, which may be configured as a support plate, and the end support legs 2 are provided at both ends of the holder body 1 for connecting the module end plates 202 of the upper layer battery module 200a and the lower layer battery module 200 b.

In order to be connected of support body 1 and tip supporting leg 2 for and promote the two joint strength, the embodiment of the utility model provides a make the tip of support body 1 have first cooperation portion 11 to make second cooperation portion 21 have on the tip supporting leg 2, and then make first cooperation portion 11 can cooperate the welding with second cooperation portion 21, with the stable connection of realization support body 1 and tip supporting leg 2, and then can make the bulk strength and the stability of double-deck module support 100 better.

According to the utility model discloses double-deck module support 100, this double-deck module support 100 is formed by support body 1 and the cooperation tailor-welding of tip supporting leg 2, can make assembling of double-deck module support 100 more convenient and can make double-deck module support 100's bulk strength and stability better.

In connection with the embodiments shown in fig. 5 and 9, the upper surface of the first fitting portion 11 is lower than the upper surface of the second fitting portion 21. Because the matching connection of the bracket body 1 and the end supporting leg 2 is performed at the matching position of the end of the first matching part 11 and the end of the second matching part 21, namely, the welding position is positioned on the contact line of the first matching part 11 and the second matching part 21, and the upper surface of the first matching part 11 is set to be lower than the upper surface of the second matching part 21, the welding position can be positioned below the second matching part 21, namely, the welding position is positioned outside an effective bearing contact area, namely, the welding spot can be hidden in a part with a difference in height, so as to avoid interference.

Therefore, the tailor-welding can be easier, the welding effect can be ensured, and the peripheral parts can be prevented from being influenced in the welding process, and the normal assembly of the upper-layer battery module 200a and the lower-layer battery module 200b can not be influenced.

As shown in fig. 5 to 8, the first fitting portion 11 includes: a first projection 111, the first projection 111 projecting outward from the end of the holder body 1, and the second fitting portion 21 including: a first groove 211, the first groove 211 being recessed inward from the side of the end support leg 2, the first projection 111 being adapted to fit into the first groove 211. The first protrusion 111 and the first groove 211 are suitable for being configured into shapes capable of being matched with each other, so that the first protrusion 111 is inserted into the first groove 211 to facilitate the tailor welding. Specifically, when the tailor welding is performed, the first protrusion 111 may be first fitted into the first groove 211, and then the welding may be performed along the fitting contact portion of the first protrusion 111 and the first groove 211, so as to stably connect the end portion support leg 2 to the bracket body 1.

Further, referring to fig. 5 to 8, a plurality of first protrusions 111 are provided, a plurality of second grooves 112 are formed between two adjacent first protrusions 111, a plurality of first grooves 211 are provided, a second protrusion 212 is formed between two adjacent first grooves 211, and the second protrusion 212 is adapted to be fitted into the second groove 112 and welded. Similarly, the second protrusion 212 and the second groove 112 are also suitable to be configured in a relatively matching shape, so that the second protrusion 212 is inserted into the second groove 112 to facilitate the tailor welding. The connection stability between the end supporting leg 2 and the bracket body 1 can be further ensured by arranging a plurality of protrusions and a plurality of grooves.

In conjunction with the embodiments shown in fig. 6 and 8, the first protrusion 111 and the second protrusion 212 are formed with a guide rounded corner 3 at the top corner. The direction fillet 3 can play the guide effect when first arch 111 cooperatees with first recess 211 and second arch 212 and second recess 112 and pegs graft to in first arch 111 can be fast accurate insert first recess 211, the second arch 212 can be fast accurate insert in second recess 112, and then can make the cooperation installation more convenient, in order to further shorten double-deck module support 100 tailor-welding required length, with promotion processing production efficiency.

As shown in fig. 6 and 8, the end support leg 2 includes: the first part 22 and the second part 23, the first part 22 is connected with the second part 23, the first part 22 is provided with a mounting hole 221, and the thickness of the second part 23 is smaller than that of the first part 22. That is, the thickness of the end support leg 2 is reduced at a position avoiding the mounting hole 221, so that the weight of the end support leg 2 is effectively reduced, and the overall weight of the double-layer module support 100 is reduced, thereby achieving the purpose of reducing the weight of the battery pack 1000.

Referring to fig. 5 to 8, the second portion 23 has a lightening hole 231 extending therethrough in a vertical direction. Therefore, the overall weight of the double-layer module bracket 100 can be further reduced, and the lightening holes 231 and the second matching parts 21 are mutually avoided, so that enough space is reserved for welding, and the tailor welding effect can be further ensured.

As shown in fig. 6, a weight-reduction cavity 12 is formed inside the bracket body 1 to penetrate in the lateral direction. From this, can effectively reduce the weight of support body 1, and then reduce the whole weight of double-deck module support 100 to realize the light-weighted mesh of battery package 1000.

Further, for guaranteeing that support body 1 has sufficient intensity, the embodiment of the utility model provides a be provided with a plurality of enhancement in subtracting heavy cavity 12 and erect muscle 121 to further promote support body 1's intensity and anti extrusion capacity, make its support upper battery module 200a that can be more stable, with the stability of further guaranteeing double-deck battery module 200, and then can make battery package 1000's stability better.

According to another aspect of the present invention, the battery pack 1000 comprises the double-layered module holder 100 described in the above embodiments.

As shown in fig. 2, 3, 4, 10, and 11, the battery pack 1000 further includes: heat insulating spacer 210, heat insulating spacer 210 sets up between battery module 200 (single-layer battery module 200 or double-layer battery module 200) and battery package 1000's lower casing 220, make heat insulating spacer 210 can hold up battery module 200, and then make battery module 200 not contact with lower casing 220, form adiabatic space 230 (air bed) between battery module 200 and lower casing 220, and then form the adiabatic effect of air, in order effectively to avoid battery module 200's heat to run off outward to battery package 1000 through casing 220 down, thereby play effectual heat preservation effect.

In addition, the heat insulating spacer 210 is made of a poor thermal conductive material, and thus, the heat of the battery module 200 can be effectively prevented from being transferred to the lower case 220, thereby further preventing the heat of the battery module 200 from being lost.

Because the battery modules 200 in the conventional battery pack 1000 are all in direct contact with the lower shell 220, the heat of the battery modules 200 is lost out of the battery pack 1000 through the lower shell 220, so that the heat dissipation of the battery pack 1000 is fast, and the battery pack 1000 cannot be well insulated in a low-temperature environment, so that the driving range is seriously shrunk.

Therefore, the embodiment of the present invention utilizes the heat preservation gasket 210 to hold up the battery module 200, makes the battery module 200 not directly contact with the lower casing 220, makes the battery module 200 and the lower casing 220 contactless region, only carries out indirect connection through the heat preservation gasket 210, and the heat preservation gasket 210 is the heat insulating part again to play the effect of thermal-insulated heat preservation.

Thus, the battery module 200 in the battery pack 1000 is supported by the heat insulating spacer 210 having a heat insulating function so as not to directly contact the lower case 220, so that the air heat insulating space 230 is formed between the battery module 200 and the lower case 220, and the battery pack 1000 is heat-insulated by the indirect contact of the heat insulating spacer 210 and the air layer formed by the heat insulating space 230, so that the driving range of the battery pack 1000 is effectively guaranteed in a low-temperature environment.

In conjunction with the embodiments shown in fig. 2, 3, 4, 10, and 11, the battery pack 1000 further includes: and a tray 240 on which the battery module 200 is mounted, the tray 240 serving to support the battery module 200 and also to perform a certain heat insulating function on the battery module 200, wherein a heat insulating gasket 210 is supported between the tray 240 and the lower case 220 to form a heat insulating space 230 between the tray 240 and the lower case 220, thereby effectively preventing heat from being transferred from the lower case 220 to the outside of the battery pack 1000.

Further, the tray 240 is provided to facilitate replacement of the battery module 200, and when the battery module 200 needs to be replaced, the tray 240 can be directly detached from the lower case 220 to take out the tray 240 together with the battery module 200. This makes it easier to replace the battery module 200.

The tray 240 may be manufactured by using different manufacturing processes such as casting and extruding a profile to ensure the strength of the tray 240, so that the tray can more stably support the battery module 200 to ensure the stability of the battery pack 1000.

As shown in fig. 4, 11 and 13, a mounting groove 241 is provided on the tray 240, the mounting groove 241 is provided on the back of the tray 240 according to the size of the heat insulating gasket 210, and can be formed by direct casting molding or post machining molding, wherein the heat insulating gasket 210 is limited in the mounting groove 241 so as to be mounted in a matching manner, and the heat insulating gasket 210 can be further ensured to be stably clamped between the tray 240 and the lower housing 220 to play an effective supporting role.

Further, referring to fig. 3 and 10, the thickness of the insulating spacer 210 is greater than the depth of the mounting groove 241. From this, can make heat preservation gasket 210 can hold up tray 240 completely, make tray 240 be in unsettled state for casing 220 down, even tray 240 can not with casing 220 direct contact down, and then make the air bed that forms adiabatic space 230 between tray 240 and the casing 220 down to the thermal-insulated effect of cooperation heat preservation gasket 210, with less battery module 200 from casing 220 department to the battery package 1000 outer diffusion heat down, and then realize the effectual heat preservation effect of battery package 1000.

Referring to fig. 13, the groove edge of the mounting groove 241 has a buffer rounded angle 2411. Can effectively prevent the concentration of tray 240 stress under the atress situation through setting up buffering fillet 2411, and then can effectively reduce the risk that mounting groove 241 fracture became invalid to guarantee the holistic stability that sets up of tray 240.

In the embodiment shown in fig. 11 and 13, a plurality of heat insulating spacers 210 are provided, and the plurality of heat insulating spacers 210 are respectively matched with the corresponding mounting grooves 241 to stably support the tray 240 on the lower housing 220. Wherein, the heat insulation pad 210 may be a circular pad to be matched with the mounting groove 241.

According to other embodiments of the present invention, the heat-insulating spacer 210 is an elongated spacer. The strip-shaped gasket can be made of hard plastics.

As shown in fig. 3, 4, 10 and 11, the lower housing 220 has a lower housing beam 221, and the insulating spacer 210 is supported between the lower housing beam 221 and the tray 240. That is, the tray 240 is fastened to the lower case cross member 221, fastening holes are formed in both side edges of the tray 240, the fastening holes are adapted to be aligned with the mounting grooves 241, and the heat insulating gasket 210 is provided with through holes, and when being mounted, fastening bolts are adapted to sequentially penetrate through the fastening holes and the through holes so as to fasten the tray 240 to the lower case cross member 221.

And because the heat-insulating spacer 210 is supported on the lower housing beam 221 rather than directly on the lower housing 220, the heat-insulating space 230 between the lower housing 220 and the tray 240 can be made larger, the heat-insulating air layer can be made thicker, and the heat-insulating effect can be made better.

According to other embodiments of the present invention, the housing of the battery module 200 is provided with a mounting groove 241, and the heat insulating spacer 210 is supported between the housing and the mounting groove 241. This also achieves a stable supporting effect of the insulating spacer 210 on the battery module 200.

As shown in fig. 10 to 12, the battery module 200 includes: a module body 201, a module end plate 202 and a strap 203. Module body 201 is the electric core piece that a plurality of electric cores are constituteed, and the outside parcel has heating film and end plate insulating paper, and wherein, the module end plate setting is at the tip of module body 201 for set up the terminal, so that to the outer output electric energy of battery module 200.

Wherein, for effectively reducing the weight of battery module 200, the embodiment of the utility model provides a do not set up the module curb plate on module body 201, but use ribbon 203 to encircle module body 201 along circumference to tighten the module end plate on module body 201, and tighten the both sides wall of module body 201 simultaneously, in order to replace the effect of module curb plate in traditional battery module 200. Therefore, the weight of the battery module 200 can be effectively reduced, and the overall weight of the battery pack 1000 can be reduced, so as to achieve the purpose of reducing the weight of the battery pack 1000.

Referring to fig. 12, and as shown in connection with fig. 10 and 11, the twist tie 203 includes: horizontal section 2031 and longitudinal section 2032, horizontal section 2031 is along horizontal extension, longitudinal section 2032 is along vertical extension, and horizontal section 2031 is connected with longitudinal section 2032, wherein, horizontal section 2031 is transversely tightened on the module end plate, in order to tighten the module end plate on module body 201, and longitudinal section 2032 is directly tightened on module body 201, in order to replace the effect of module curb plate in traditional battery module 200, and then when guaranteeing battery module 200 overall stability, the effectual whole weight that reduces battery module 200.

It should be noted that, besides the tie 203 tightening, the insulating glue can be used for bonding and fixing between the module end plate and the module body 201 to ensure the stability of the arrangement.

As shown in fig. 12, an inwardly recessed limit groove 2021 is formed on the module end plate, and the tie 203 is fit in the limit groove 2021 in a limited manner. Wherein, spacing groove 2021 is along horizontal extension, and the spacing cooperation of ribbon 203 can effectively avoid scurrying on module end plate 202 in spacing groove 2021, and then can guarantee the fastening stability of ribbon 203 to the module end plate, can effectively promote battery module 200's whole stability that sets up.

Further, referring to fig. 12, the stopper groove 2021 includes: the straight groove section 20211 and the arc transition groove section 20212, the straight groove section 20211 is linked together with the arc transition groove section 20212, the straight groove section 20211 is formed on the lateral wall of the module end plate, the arc transition groove section 20212 is formed on the arc wall of the end portion of the module end plate 202, wherein, the ribbon 203 is suitable for being respectively matched with the straight groove section 20211 and the arc transition groove section 20212 for limiting, the ribbon 203 can be prevented from being damaged by the bending part of the end portion of the module end plate by arranging the arc transition groove section 20212, and further the stability of the battery module 200 can be effectively ensured.

Referring to fig. 12, as shown in fig. 10 and 11, the limit groove 2021 is provided with a protrusion 2022, the protrusion 2022 is located in the middle of the limit groove 2021, and the protrusion 2022 is adapted to abut against the strap 203. Because the limiting groove 2021 is formed by inward recessing from the outer side wall of the module end plate, when the ribbon 203 tightens the module end plate, the fulcrum (the main stress position) between the ribbon 203 and the limiting groove 2021 is at the arc transition groove section 20212, and because the fulcrum is at this position, the tightening force of the ribbon 203 to the two ends of the module end plate 202 is large, and the limiting force to the straight groove section 20211, i.e., the middle part of the module end plate 202 is small, but by arranging the protruding section 2022, the middle part of the limiting groove 2021, i.e., the middle part of the module end plate, is abutted against the ribbon 203, so as to ensure the tightening force of the ribbon 203 to the middle part of the module end plate, and further, the tightening limiting effect of the ribbon 203 to the module end plate is better, so as to effectively improve the overall stability of the battery module 200.

Further, the width of the protruding portion 2022 is not less than the width of the limiting groove 2021, so as to ensure that a sufficient supporting area is provided between the band 203 and the protruding portion 2022, and the height of the protruding portion 2022 protruding outwards is not less than the outer side wall of the module end plate 202, so as to effectively ensure the tightening limiting effect.

As shown in fig. 12, an inclined section 2023 is connected between the stopper groove 2021 and the protrusion 2022. The inclined section 2023 can effectively prevent the ribbon 203 from being damaged by the corner connected between the limiting groove 2021 and the protruding portion 2022, so as to effectively protect the ribbon 203.

According to some embodiments of the present invention, the length of the protrusion 2022 is one fifth of the overall length of the limiting groove 2021. Therefore, the tightening force applied by the tie strap 203 to the module end plate 202 can be more balanced, so as to effectively ensure the overall stability of the battery module 200.

As shown in fig. 1 to 4, the upper battery module 200a is fastened to the double-layered module holder 100 by the first short bolt 400 to stably mount the upper battery module 200a on the double-layered module holder 100. And the tray 240 serves to support the lower battery module 200b and the above double-layered module holder 100 and the upper battery module 200a, wherein the tray 240 is fixed to the lower case 220 of the battery pack 1000, and the lower-stage battery module 200b is fastened to the tray 240 by the second short bolts 500, so that the lower battery module 200b is stably mounted on the tray 240, and in order to connect the upper battery module 200a with the lower battery module 200b, the embodiment of the present invention integrally fastens the double-layered battery module 200 to the tray 240 by means of the long bolt 600, that is, the long bolts 600 simultaneously pass through the upper-stage battery module 200a, the double-stage module holder 100 and the lower-stage battery module 200b to be fastened to the tray 240, the upper battery module 200a and the lower battery module 200b are connected, and the entire double-layered battery module 200 is fastened to the tray 240 and, in turn, to the lower case 220.

Wherein, for the whole fastening effect and the stability that make double-deck battery module 200 better, the embodiment of the utility model provides a set up first short bolt 400 and second short bolt 500 in the position that is located between long bolt 600. That is, at least a part of the first short bolt 400 and the second short bolt 500 is positioned between two adjacent long bolts 600 or two adjacent sets of long bolts 600. From this, can make the distribution of length bolt more even, make whole atress more balanced, and then make double-deck battery module 200's whole fastening effect and stability better.

In conjunction with the embodiment shown in fig. 3 and 4, the first short bolts 400 are adapted to pass through the module end plates 202 of the upper battery module 200a to be fastened with the double-layered module holder 100. Specifically, the module end plate 202 of the upper battery module 200a has a first through-hole therein, the double-layered module bracket 100 has a first fastening hole, and the first short bolt 400 is adapted to pass through the first through-hole to be fastened with the first fastening hole, so as to stably fasten the upper battery module 200a to the double-layered module bracket 100.

The second short bolts 500 are adapted to penetrate the module end plates 202 of the lower battery module 200b to be fastened with the tray 240. Specifically, the lower battery module 200b has second through-holes in the module end plates 202 thereof, the tray 240 has second fastening holes, and second short bolts 500 are adapted to pass through the second through-holes to be fastened with the second fastening holes, so as to stably fasten the lower battery module 200b to the tray 240.

The module end plate 202 of the upper battery module 200a further has a first through hole, the double-layer module support 100 has a second through hole, the module end plate 202 of the lower battery module 200b has a third through hole, and the tray 240 has a third fastening hole, the long bolt 600 is adapted to sequentially pass through the first through hole of the module end plate 202 of the upper battery module 200a, the second through hole of the double-layer module support 100, and the third through hole of the module end plate 202 of the lower battery module 200b to be fastened with the third fastening hole of the tray 240, thereby connecting the upper battery module 200a with the lower battery module 200b and fastening the entire double-layer battery module 200 on the tray 240.

As shown in fig. 3 and 4, the long bolt 600 includes: the first long bolts 610 are provided at the middle of the double-layered battery module 200 for fastening the middle of the double-layered battery module 200, and the second long bolts 620 are provided at both ends of the double-layered battery module 200 for fastening the ends of the double-layered battery module 200. Therefore, the stress on each part of the double-layer battery module 200 is more uniform, and the overall fastening effect of the double-layer battery module 200 is better.

Further, referring to fig. 3 and 4, the first short bolt 400 and the second short bolt 500 are respectively disposed between the first long bolt 610 and the second long bolt 620, and the first short bolt 400 and the second short bolt 500 are disposed adjacent to the first long bolt 610. From this, can make the distribution of length bolt on double-deck battery module 200 more even, and then can make double-deck battery module 200's atress more even to make double-deck battery module 200's whole fastening effect and stability better.

According to the utility model discloses a some embodiments are provided with the adhesive on the last wall of double-deck module support 100, and upper battery module 200a passes through the adhesive and bonds on double-deck module support 100, is provided with the adhesive on the last wall of tray 240, and lower floor's battery module 200b passes through the adhesive and bonds on tray 240. Thus, the fastening effect and stability of the double-layered battery module 200 can be improved.

As shown in fig. 3 and 4, the tray 240 includes: a body supporting part 242 and an edge fixing part 243, the double-layered battery module 200 being adapted to be supported on the body supporting part 242 and the second short bolts 500 and the long bolts 600 being adapted to be fastened to the body supporting part 242, respectively, and the edge fixing part 243 being adapted to be fastened to the lower case cross member 221 of the lower case 220 to fix the tray 240 and the double-layered battery module 200 disposed thereon to the lower case cross member 221.

Further, the thickness of the edge fixing portion 243 is smaller than that of the body supporting portion 242. Thereby, the fitting fastening of the edge fixing portion 243 to the lower housing cross member 221 is facilitated.

As shown in fig. 3, 10 and 13, the body support portion 242 has a weight-reducing cavity 244 therein. Therefore, the weight of the tray 240 can be effectively reduced, and the overall weight of the battery pack 1000 can be reduced, so that the purpose of reducing the weight of the battery pack 1000 can be conveniently achieved.

Further, a plurality of support vertical ribs 245 are arranged in the weight-reducing cavity 244. Accordingly, the support strength of the main body support part 242 may be further increased to stably support the double-layered battery module 200, and thus, the stability of the battery pack 1000 may be effectively improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A dual layer module rack (100), comprising:

the bracket comprises a bracket body (1), wherein a first matching part (11) is arranged at the end part of the bracket body (1);

the support comprises end supporting legs (2), the end supporting legs (2) are arranged at two ends of the support body (1), second matching parts (21) are arranged on the end supporting legs (2), and the first matching parts (11) are suitable for being welded with the second matching parts (21) in a matching mode.

2. The double-deck module holder (100) according to claim 1, wherein an upper surface of the first engaging portion (11) is lower than an upper surface of the second engaging portion (21).

3. The double-deck module holder (100) according to claim 1, wherein the first fitting portion (11) comprises: a first projection (111), the first projection (111) projecting outward from an end of the holder body (1), the second fitting portion (21) including: a first groove (211), the first groove (211) being recessed inwardly from the side of the end support leg (2), the first projection (111) being adapted to fit within the first groove (211).

4. The dual-layer module holder (100) according to claim 3, wherein the first protrusions (111) are plural, a second groove (112) is formed between two adjacent first protrusions (111), the first grooves (211) are plural, a second protrusion (212) is formed between two adjacent first grooves (211), and the second protrusion (212) is adapted to be fitted into the second groove (112).

5. The double-deck module holder (100) according to claim 4, wherein the first protrusion (111) and the second protrusion (212) are each formed with a guide fillet (3) at a vertex angle.

6. The double-deck module support (100) according to claim 1, wherein the end support leg (2) comprises: the connecting structure comprises a first part (22) and a second part (23), wherein the first part (22) is connected with the second part (23), a mounting hole (221) is formed in the first part (22), and the thickness of the second part (23) is smaller than that of the first part (22).

7. The double-deck module support (100) according to claim 6, wherein the second portion (23) has a lightening hole (231) vertically penetrating therethrough.

8. The double-deck module carrier (100) according to claim 1, wherein the carrier body (1) is internally formed with a weight-reducing cavity (12) running through in the transverse direction.

9. Double-deck module carrier (100) according to claim 8, wherein a plurality of reinforcing vertical ribs (121) are provided in the weight-reducing cavity (12).

10. A battery pack (1000) comprising the double-layered module holder (100) according to any one of claims 1 to 9.

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