CN218975645U

CN218975645U - Battery pack bracket and battery pack

Info

Publication number: CN218975645U
Application number: CN202222385997.XU
Authority: CN
Inventors: 权圣渊
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-05-05
Anticipated expiration: 2032-09-08

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack bracket and a battery pack. The battery pack bracket comprises a plurality of first supporting rods, a plurality of groups of connecting pieces, a plurality of second supporting rods and a plurality of third supporting rods, wherein the plurality of first supporting rods are sequentially connected end to form a first rectangular frame, and a lower module installation layer is formed in the first rectangular frame; the plurality of second struts are arranged above the upper module installation layer along the first direction at intervals, each third strut is sequentially clamped to the plurality of second struts, the plurality of second struts and the plurality of third struts form the upper module installation layer, the plurality of groups of connecting pieces are connected between the upper module installation layer and the lower module installation layer along the first direction and/or the second direction at intervals, each group of connecting pieces comprises two connecting rods which are oppositely arranged, two ends of each connecting rod are respectively connected to one ends of the first struts and the second struts, or two ends of each connecting rod are respectively connected to one ends of the first struts and the third struts. The battery pack support and the battery pack are high in structural stability.

Description

Battery pack bracket and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack bracket and a battery pack.

Background

In the accommodation space of the whole vehicle, the arrangement of the battery system is easy to interfere with mechanisms such as a motor, a speed reducer and the like, so that the arrangement of the battery system is difficult. The single-layer arranged power batteries are suitable for vehicle types with lower chassis, and if the single-layer arranged power batteries are installed on a commercial vehicle with higher chassis, the waste in height space exists and the installation space of other parts is occupied; the battery pack with higher height can meet the requirements of a power system of the whole vehicle, fully utilizes the height space of the whole vehicle and achieves rationalization of the arrangement of the whole vehicle. However, the higher battery pack has higher requirements on the stability of the bracket, and the existing higher battery pack has the problem of unstable whole body and is easy to crack.

Disclosure of Invention

Based on the above, the utility model aims to provide a battery pack bracket and a battery pack, which have higher structural stability, save occupied area, meet the requirement of high capacity, and have higher battery energy density.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a battery pack holder, comprising:

the first support rods are sequentially connected end to form a first rectangular frame, and a lower module installation layer is formed in the first rectangular frame;

the second support rods are arranged above the upper module installation layer at intervals along the first direction;

the third struts are distributed at intervals along the second direction, each third strut is sequentially clamped to the second struts, and the second struts and the third struts form an upper module installation layer;

the multiple groups of connecting pieces are connected between the upper module installation layer and the lower module installation layer at intervals along the first direction and/or the second direction, each group of connecting pieces comprises two oppositely arranged connecting rods, two ends of each connecting rod are respectively connected with one end of the first supporting rod and one end of the second supporting rod, or two ends of each connecting rod are respectively connected with one end of the first supporting rod and one end of the third supporting rod.

As the preferred scheme of battery package support, every on the second branch along the length direction of second branch is spaced apart to be equipped with a plurality of spliced eyes, the spliced eye is followed the width direction of second branch runs through, the third branch passes the spliced eye.

As the preferred scheme of battery package support, second branch includes the main part, the main part is the U-shaped, the opposite both sides of main part are provided with the flange in extension outwards respectively, the opposite both sides wall of main part has all been seted up the spliced eye.

As the preferred scheme of battery package support, the top of connecting rod inwards extends and is provided with the connecting seat, the tip of second branch or the tip of third branch with the connecting seat can dismantle the connection.

As a preferred embodiment of the battery pack holder, further comprising:

at least four reinforcing rods are vertically arranged at four corners of the first rectangular frame.

As a preferred embodiment of the battery pack holder, further comprising:

the connecting rods are connected with at least one connecting cross rod between every two adjacent reinforcing rods.

As a preferred embodiment of the battery pack holder, further comprising:

the multiunit is strengthened the montant, and the multiunit the connecting piece is followed the first direction interval sets up, multiunit strengthen the montant is followed the second direction interval sets up, every group strengthen the montant and include two reinforcing montants of relative setting, every strengthen the montant connect in first branch with connect the horizontal pole.

As a preferred embodiment of the battery pack holder, further comprising:

the connecting rods are arranged on the same side, and at least one connecting rod is connected between every two adjacent connecting rods on the same side, and/or at least one connecting rod is connected between every two adjacent reinforcing vertical rods on the same side.

The battery pack comprises a plurality of battery modules and the battery pack support according to any one of the technical schemes, wherein part of the battery modules are arranged on the upper module installation layer, and the other part of the battery modules are arranged on the lower module installation layer.

As a preferred scheme of the battery pack, the number of the battery modules located on the lower module mounting layer is greater than the number of the battery modules located on the upper module mounting layer.

As a preferred embodiment of the battery pack, further comprising:

the upper module mounting plate is arranged on the upper module mounting layer, a plurality of groups of first convex ribs are arranged on the upper module mounting plate, and each end plate of the battery module on the upper module mounting layer is connected with a group of first convex ribs.

The beneficial effects of the utility model are as follows:

the utility model provides a battery pack support, which comprises a plurality of first support rods, a plurality of groups of connecting rods, a plurality of second support rods and a plurality of third support rods, wherein the plurality of second support rods can be arranged above a first rectangular frame at intervals along a first direction through the connecting rods arranged between an upper module installation layer and a lower module installation layer, and the structure is simple; through every third branch in proper order with a plurality of second branch joint, realize the fixed of third branch, saved unnecessary structure, and structural stability is stronger between a plurality of second branches and a plurality of third branch, bearing capacity is better. The battery pack support is provided with a lower module installation layer and an upper module installation layer, has a compact structure and can meet the structural strength of a double-layer module.

The utility model also provides a battery pack, which comprises a plurality of battery modules and the battery pack bracket, wherein part of the battery modules are arranged on the upper module installation layer, and the other part of the battery modules are arranged on the lower module installation layer, so that the occupied area of the battery pack on a plane is greatly reduced, and the height space can be fully utilized; and the adopted battery pack bracket has stable structure, so that the battery pack has higher stability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural view of a battery pack holder according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a second strut according to an embodiment of the present utility model;

FIG. 3 is a schematic structural view of a third strut according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a battery pack according to an embodiment of the present utility model;

fig. 5 is a schematic view showing an internal structure of a battery pack according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of an internal structure of a battery pack (not shown) according to an embodiment of the present utility model;

fig. 7 is a schematic view of the internal structure of a battery pack according to an embodiment of the present utility model (showing a first heat insulating sheet);

fig. 8 is a schematic view of the internal structure of a battery pack according to an embodiment of the present utility model (showing a first heat conductive sheet);

fig. 9 is a schematic view of the internal structure of a battery pack according to an embodiment of the present utility model (showing a first insulating cover);

fig. 10 is a schematic diagram of the internal structure of a battery pack according to an embodiment of the present utility model (showing the upper module mounting plate and the second heat conductive sheet);

fig. 11 is a schematic view of the internal structure of a battery pack according to an embodiment of the present utility model (showing a second heat insulating sheet);

fig. 12 is a schematic view of the internal structure of a battery pack according to an embodiment of the present utility model (showing a second heating sheet).

In the figure:

1. a first strut; 2. a connecting rod; 201. a connecting seat; 3. a second strut; 300. a plug hole; 301. a main body; 302. a flange; 4. a third strut; 40. an avoidance groove; 5. a reinforcing rod; 6. reinforcing vertical rods; 7. connecting the cross bars; 8. a battery module; 9. an upper module mounting plate; 10. a fourth strut; 11. an upper housing; 12. a lower housing; 13. a first heat insulating sheet; 14. a first heating plate; 15. a first heat conductive sheet; 16. a first insulating cover; 17. the first convex rib; 18. a second heat insulating sheet; 19. a second heating plate; 20. a second heat conductive sheet; 21. a second insulating cover; 22. a shunt; 23. a battery management system; 24. a DCDC power module; 25. a charging relay; 26. a discharge relay; 27. a fire suppression module; 28. hoisting the piece; 29. a first positioning member; 30. a second positioning member;

100. and a lightening hole.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 to 3, the present embodiment provides a battery pack support, which includes a plurality of first struts 1, a plurality of groups of connecting members, a plurality of second struts 3, and a plurality of third struts 4, where the plurality of first struts 1 are sequentially connected end to form a first rectangular frame, and a lower module installation layer is formed in the first rectangular frame; the first direction interval sets up the top on upper module installation level along a plurality of second branch 3, the interval distribution is followed to a plurality of third branch 4 along the second direction, every third branch 4 joint in proper order is in a plurality of second branch 3, a plurality of second branch 3 and a plurality of third branch 4 form upper module installation level, multiunit connecting piece is along first direction and/or second direction interval connection between upper module installation level and lower floor module installation level, every connecting piece of group includes two connecting rods 2 of relative setting, the both ends of every connecting rod 2 are connected in the one end of first branch 1 and second branch 3 respectively, or the both ends of every connecting rod 2 are connected in the one end of first branch 1 and third branch 4 respectively.

The battery pack bracket provided by the embodiment enables the plurality of second supporting rods 3 to be arranged above the first rectangular frame at intervals along the first direction through the connecting rods arranged between the upper module installation layer and the lower module installation layer, and has a simple structure; through every third branch 4 in proper order with a plurality of second branch 3 joint, realize the fixed of third branch 4, saved unnecessary structure, and structural stability is stronger between a plurality of second branches 3 and a plurality of third branch 4, bearing capacity preferred. The battery pack support is provided with a lower module installation layer and an upper module installation layer, has a compact structure and can meet the structural strength of a double-layer module.

The first struts 1 are provided with four first struts 1, and the four first struts 1 are connected end to end in sequence to form a first rectangular frame, wherein two first struts 1 extend along a first direction, the other two first struts 1 extend along a second direction, the first direction is perpendicular to the second direction, and the structural stability of the first rectangular frame is high. Of course, in other embodiments, the number of first struts 1 may be set according to actual requirements.

Preferably, the first supporting rod 1 is in an L-shaped structure, so that the structural strength is high, and the first rectangular frame formed by surrounding the plurality of first supporting rods 1 has a certain protection effect on the internal structure, and is convenient for subsequent connection and packaging.

In this embodiment, the battery pack bracket further includes a plurality of fourth struts 10, the plurality of fourth struts 10 are disposed on the first rectangular frame at intervals along the first direction or the second direction, and two ends of each fourth strut 10 are respectively connected to two opposite sides of the first rectangular frame. Through setting up fourth branch 10, be favorable to strengthening the structural strength of first rectangle frame, and be convenient for place battery module 8, provide the supporting role for battery module 8.

Further, at least one reinforcing rod 5 is respectively arranged at four corners of the first rectangular frame, so that the structural strength and stability of the battery pack support are enhanced, and the possibility of deformation of the battery pack support is reduced.

Preferably, the reinforcing rods 5 are of L-shaped structures, and two side plates of the reinforcing rods 5 are respectively connected with two adjacent first supporting rods 1, so that rectangular spaces are formed between the reinforcing rods 5 at four corners, and the reinforcing rods are good in structural protection performance and high in structural strength.

More preferably, the battery pack support further comprises a plurality of connecting cross bars 7, at least one connecting cross bar 7 is connected between every two adjacent reinforcing bars 5, and the connecting rod 2 is connected with the connecting cross bars 7. Under the above-mentioned structure, a plurality of connection horizontal poles 7 enclose to establish and form the second rectangle frame, guarantee the stability of each connecting rod 2, avoid connecting rod 2 to buckle or incline, strengthen the structural stability of upper die set erection bed and lower floor's die set erection bed promptly to improve the structural strength and the stability of this battery package support.

More preferably, the battery pack bracket further comprises a plurality of groups of reinforcing vertical rods 6, wherein the plurality of groups of connecting pieces are arranged at intervals along the first direction, the plurality of groups of reinforcing vertical rods 6 are arranged at intervals along the second direction, each group of reinforcing vertical rods 6 comprises two reinforcing vertical rods 6 which are oppositely arranged, and each reinforcing vertical rod 6 is connected with the first supporting rod 1 and the connecting cross rod 7. Further enhancing the structural strength and stability of the battery pack support. Specifically, the two reinforcing vertical rods 6 in the same group are just opposite to be connected to the two opposite sides of the first rectangular frame, so that the battery pack bracket is uniform in stress and strong in bearing capacity. In this embodiment, the first direction is the length direction of the first rectangular frame, the second direction is the width direction of the first rectangular frame, that is, the reinforcing vertical rods 6 on the same side are arranged at intervals along the width direction of the first rectangular frame, and the connecting rods 2 on the same side are arranged at intervals along the length direction of the first rectangular frame, so that the number of the connecting rods 2 is more, that is, the number of the second supporting rods 3 and the third supporting rods 4 is more, and the reliability of the upper module installation layer is ensured.

Further, the top end of each connecting rod 2 is provided with a connecting seat 201 extending inwards, and the end of the second strut 3 or the end of the third strut 4 is detachably connected with the connecting seat 201. The end of the second strut 3 is illustratively detachably connected to the connection socket 201. The top through connecting rod 2 inwards extends and sets up connecting seat 201, and the second branch 3 of being convenient for is connected with connecting rod 2, improves the connection stability of second branch 3, and makes the installation of second branch 3 dismantle conveniently. Illustratively, the two ends of the second strut 3 are respectively provided with a first connecting hole, the connecting seat 201 is provided with a second connecting hole, and a bolt passes through one first connecting hole and one second connecting hole and is in threaded connection with a nut. Through bolted connection for the connection structural strength of second branch 3 and connecting seat 201 is higher, and the dismouting of being convenient for, and the cost is lower. Of course, in other embodiments, the second strut 3 and the connecting rod 2 may be connected by other structures, such as a snap-fit structure, etc.

Specifically, as shown in fig. 1 and 2, a plurality of insertion holes 300 are provided on each second strut 3 at intervals along the length direction of the second strut 3, the insertion holes 300 penetrate in the width direction of the second strut 3, and the third strut 4 penetrates the insertion holes 300. Through the spliced eye 300 is passed to third branch 4, not only easy dismounting, and the connection stability of second branch 3 and third branch 4 is higher, has also reduced the overall thickness of second branch 3 and third branch 4 to make battery module 8 place stably, can also effectively reduce unnecessary structure simultaneously, save installation process and cost.

More specifically, the second supporting rod 3 includes a main body 301, the main body 301 is U-shaped, two opposite sides of the main body 301 extend outwards to form flanges 302, and two opposite side walls of the main body 301 are provided with plug holes 300. Under the structure, the two flanges 302 of each second supporting rod 3 can play a good supporting role on the battery module 8, and the structural strength of the second supporting rod 3 can be ensured; meanwhile, the main body 301 is U-shaped, so that the plug holes 300 are conveniently formed, and the structural strength of the second supporting rod 3 can be enhanced. In this embodiment, as shown in fig. 1 and 3, the third supporting rod 4 has the same structure as the second supporting rod 3, and has higher structural strength, so as to ensure the stability of the upper module installation layer. Illustratively, the portion of the third strut 4 inserted in the jack 300 is provided with the avoidance groove 400, so as to avoid interference with the jack 300.

Preferably, the reinforcing vertical rods 6, the connecting cross rods 7, the connecting rods 2, the second supporting rods 3 and the third supporting rods 4 are provided with lightening holes 100, which is beneficial to lightening the whole weight of the battery pack bracket.

As shown in fig. 4 to 12, the present embodiment further provides a battery pack including a plurality of battery modules 8 and the battery pack holder described above, wherein a part of the battery modules 8 are disposed on the upper module mounting layer, and another part of the battery modules 8 are disposed on the lower module mounting layer. By placing part of the battery modules 8 on the upper module mounting layer and the other part of the battery modules 8 on the lower module mounting layer, the occupied area of the battery pack on a plane is greatly reduced, and the height space can be fully utilized; and the adopted battery pack bracket has stable structure, so that the battery pack has higher stability.

Preferably, the number of battery modules 8 on the lower module mounting layer is greater than the number of battery modules 8 on the upper module mounting layer. The occupied area of the battery pack on a plane can be reduced, the occupied space above the battery pack can be reduced, and the battery pack is convenient to use in a battery system of a large forklift with high capacity requirements. The battery pack can fully utilize the height space of the whole vehicle on the basis of meeting the requirements of the power system of the whole vehicle, vacate space for the installation of other parts, and play a certain role in avoiding the parts above, so that the rationalization of the arrangement of the whole vehicle is achieved.

Illustratively, the upper module mounting layer is provided with three battery modules 8, and the lower module mounting layer is provided with four battery modules 8. Of course, in other embodiments, the number of the battery modules 8 on the upper module mounting layer and the lower module mounting layer is specifically set according to actual requirements.

In this embodiment, the plurality of battery modules 8 are sequentially connected in series, and the negative electrode terminal and the positive electrode terminal of the battery pack are led out from the battery module 8 located on the upper module installation layer, so that the battery pack is convenient to electrically connect with electric equipment.

Specifically, as shown in fig. 4, the battery pack further includes an upper case 11 and a lower case 12, and the upper case 11 and the lower case 12 are detachably connected and form a mounting cavity in which the battery pack holder is mounted. Preferably, the upper shell 11 is in a trapezoid shape, and the installation cavity is matched with the shape of the battery pack support, so that the structural compactness of the battery pack is improved, the overall volume is reduced, and the specific energy of the battery pack is improved. More preferably, the opposite side walls of the lower housing 12 are respectively provided with a lifting member 28, and the lifting member 28 is provided with a lifting hole, so that the battery pack can be lifted and carried by the lifting member 28.

Illustratively, as shown in fig. 5, a shunt 22, a battery management system 23 and a DCDC power module 24 are disposed at one end of the upper module mounting layer located at the battery module 8, and a charging relay 25, a discharging relay 26 and a fire extinguishing module 27 are disposed at one side of the upper module mounting layer located at the battery module 8. Because the current divider 22, the battery management system 23, the DCDC power module 24, the charging relay 25, the discharging relay 26, and the fire extinguishing module 27 are all well known in the art, they are not described in detail.

Specifically, as shown in fig. 6 to 9, a first installation position is formed between every two adjacent fourth struts 10, and each first installation position is provided with silica gel foam, a first heat insulation sheet 13, a first heating sheet 14 and a first heat conduction sheet 15 in sequence from bottom to top, and each fourth strut 10 is also provided with silica gel foam, and each battery module 8 is installed on one first installation position and is located at the upper end of the first heat conduction sheet 15. The upper end cover of the battery module 8 positioned on the lower module mounting layer is provided with a first insulating cover 16, and the upper module mounting layer formed by the second bracket and the third bracket is positioned above the first insulating cover 16. Illustratively, the first heat insulating sheet 13 is provided with a first fixing hole, the first heating sheet 14 is correspondingly provided with a first positioning hole, each first fixing position is provided with a first positioning piece 29, the middle section of each first positioning piece 29 is upwards convex, two ends of each first positioning piece 29 are abutted to the lower end of the first heat insulating sheet 13, the convex part is clamped in the first positioning hole, a bolt passes through one first positioning hole and the corresponding convex part and then is in threaded connection with a nut, so that the first heat insulating sheet 13 and the first heating sheet 14 are fixed, the connecting structure is stable, the occupied space is small, and the disassembly and the assembly are convenient.

Further, as shown in fig. 10, the battery pack further includes an upper module mounting plate 9, the upper module mounting plate 9 is disposed on the upper module mounting layer, a plurality of groups of first ribs 17 are disposed on the upper module mounting plate 9, and the end plate of each battery module 8 disposed on the upper module mounting layer is connected to a group of first ribs 17. The first protruding ribs 17 are beneficial to improving the structural strength of the upper module mounting plate 9, and the connection stability of the battery module 8 and the upper module mounting plate 9 is enhanced, so that the applicable reliability of the battery pack is improved.

Illustratively, each group of first ribs 17 includes two first ribs 17, the two first ribs 17 are disposed opposite to each other, and the end plates at both ends of each battery module 8 are respectively connected to the two first ribs 17 of the same group.

Specifically, as shown in fig. 5, 10, 11 and 12, the upper module mounting plate 9 is provided with a plurality of second mounting positions along the first direction or the second direction at intervals, each second mounting position is sequentially stacked with a second heat insulating sheet 18, a second heating sheet 19 and a second heat conducting sheet 20, each battery module 8 is placed on the upper end surface of one second heat conducting sheet 20, and a second insulating cover 21 is arranged on the upper end cover of the battery module 8 on the upper module mounting layer to isolate the battery module 8 from the upper casing 11. Illustratively, the second heat insulating sheet 18 is provided with a second fixing hole, the second heating sheet 19 is correspondingly provided with second positioning holes, each second fixing position is provided with a second positioning piece 30, the middle section of each second positioning piece 30 is upwardly convex, two ends of each second positioning piece 30 are abutted to the lower end of the second heat insulating sheet 18, the convex parts are clamped in the second positioning holes, the bolts penetrate through one second positioning hole and the corresponding convex parts and are in threaded connection with nuts, so that the fixing of the second heat insulating sheet 18 and the second heating sheet 19 is realized, the connecting structure is stable, the occupied space is small, and the dismounting is convenient.

The battery pack provided by the embodiment effectively improves the space utilization rate inside the battery pack, and is beneficial to improving the battery energy density.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. The battery package support, its characterized in that includes:

the first support rods (1) are sequentially connected end to form a first rectangular frame, and a lower module installation layer is formed in the first rectangular frame;

a plurality of second struts (3) arranged above the lower module mounting layer at intervals along the first direction;

the third support rods (4) are distributed at intervals along the second direction, each third support rod (4) is sequentially clamped to the second support rods (3), and the second support rods (3) and the third support rods (4) form an upper module installation layer;

the multi-group connecting piece is connected between the upper module installation layer and the lower module installation layer at intervals along the first direction and/or the second direction, each group of connecting piece comprises two oppositely arranged connecting rods (2), each connecting rod (2) is respectively connected with one end of the first supporting rod (1) and one end of the second supporting rod (3), or each connecting rod (2) is respectively connected with one end of the first supporting rod (1) and one end of the third supporting rod (4).

2. The battery pack bracket according to claim 1, wherein a plurality of plug holes (300) are formed in each second support rod (3) at intervals along the length direction of the second support rod (3), the plug holes (300) penetrate through the second support rod (3) along the width direction, and the third support rod (4) penetrates through the plug holes (300).

3. The battery pack support according to claim 2, wherein the second support rod (3) comprises a main body (301), the main body (301) is in a U shape, flanges (302) are respectively arranged on two opposite sides of the main body (301) in an outward extending mode, and the plug holes (300) are respectively formed in two opposite side walls of the main body (301).

4. The battery pack bracket according to claim 1, wherein the top end of the connecting rod (2) is provided with a connecting seat (201) extending inwards, and the end of the second support rod (3) or the end of the third support rod (4) is detachably connected with the connecting seat (201).

5. The battery pack holder of claim 1, further comprising:

and at least four reinforcing rods (5) are vertically arranged at four corners of the first rectangular frame.

6. The battery pack holder of claim 5, further comprising:

the connecting rods (7) are connected between every two adjacent reinforcing rods (5), at least one connecting rod (7) is connected between every two adjacent reinforcing rods (5), and the connecting rods (2) are connected with the connecting rods (7).

7. The battery pack holder of claim 6, further comprising:

multiunit is strengthened montant (6), multiunit the connecting piece is followed first direction interval sets up, multiunit strengthen montant (6) are followed second direction interval sets up, every group strengthen montant (6) include two reinforcing montants (6) of relative setting, every strengthen montant (6) connect in first branch (1) with connect horizontal pole (7).

8. Battery pack characterized by comprising a plurality of battery modules (8) and the battery pack support according to any one of claims 1 to 7, wherein part of the battery modules (8) are arranged on the upper module mounting layer and the other part of the battery modules (8) are arranged on the lower module mounting layer.

9. The battery pack according to claim 8, wherein the number of the battery modules (8) on the lower module mounting layer is greater than the number of the battery modules (8) on the upper module mounting layer.

10. The battery pack of claim 8, further comprising:

the upper module mounting plate (9) is arranged on the upper module mounting layer, a plurality of groups of first ribs (17) are arranged on the upper module mounting plate (9), and each end plate of the battery module (8) on the upper module mounting layer is connected with one group of first ribs (17).