Battery pack hoisting structure and battery pack

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a battery pack hoisting structure and a battery pack, and the battery pack hoisting structure comprises a bottom bracket, a structural beam assembly, a box cover and a hoisting bracket. Wherein the bottom bracket is arranged below the battery cell, and the bottom bracket can support the battery cell. The structural beam assembly is connected to the bottom support, and the box cover is connected with the structural beam assembly. The hoisting support is arranged on the outer side of the box cover and connected to the box cover, and hoisting points are arranged on the hoisting support. The battery pack comprises a box body, the battery cell and the battery pack hoisting structure, the box cover is connected to the opening of the box body in a sealed mode to form a battery box, and the bottom support, the structural beam assembly and the battery cell are all located in the battery box. According to the battery pack, normal hoisting can be guaranteed under the condition that the length and width space is limited, and the box cover can be prevented from being deformed due to stress.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage equipment technical field especially, relates to a kind of battery pack hoisting structure and battery pack. BACKGROUND

[0002] The existing battery pack in hoisting process, will set hoisting point on edge beam and the middle hoisting point of horizontal beam, but due to the limitation of length-width space, many battery packs are difficult to design hoisting point on the edge beam of the four around box, or design middle hoisting point on horizontal beam, thus can only design hoisting point on the box cover. But the conventional box cover is not used to bear the weight of battery pack, so the design strength is usually poor, difficult to directly bear the gravity of whole package, easily deformed, leading to battery pack sealing failure. SUMMARY

[0003] One purpose of the utility model is to provide a kind of battery pack hoisting structure, can guarantee the normal hoisting of battery pack under the condition of the limitation of length-width space, and can prevent the stress deformation of the box cover of battery pack.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] Provide a kind of battery pack hoisting structure, comprising:

[0006] Bottom support, the bottom support is set below the battery cell, the bottom support can support the battery cell;

[0007] Structure beam assembly, the structure beam assembly is connected to the bottom support;

[0008] Box cover, the box cover is connected with the structure beam assembly;

[0009] Hoisting support, the hoisting support is set on the outside of the box cover, the hoisting support is connected to the box cover, and the hoisting support is provided with hoisting point.

[0010] Optionally, the hoisting support and the box cover have multiple connecting areas.

[0011] Optionally, the structure beam assembly includes transverse beam extending along the length direction of battery pack, and the transverse beam is connected with the bottom support and the box cover;

[0012] And / or, the structure beam assembly includes expansion beam extending along the width direction of battery pack, and the expansion beam is connected with the bottom support and the box cover.

[0013] Optionally, the expansion beam is provided with two, and the battery pack hoisting structure further includes first pressing strip, two ends of the first pressing strip are connected to two expansion beams respectively, and the first pressing strip is connected with the box cover.

[0014] Optionally, the expansion beams are provided in two, and the battery pack hoisting structure further comprises a second pressing strip, two ends of the second pressing strip are connected to the two expansion beams respectively, the second pressing strip is connected with the box cover, the second pressing strip has a channel opened along the length direction of the battery pack, and the second pressing strip is provided with a plurality of butt joints, the plurality of butt joints are in communication with the channel, and the plurality of butt joints are respectively directed to the pressure relief valves of the plurality of battery cells.

[0015] Another purpose of the utility model lies in: providing a battery pack, which can ensure normal hoisting under the condition that the length and width space is limited, and can prevent the box cover from being deformed under stress.

[0016] To achieve the purpose, the utility model adopts the following technical scheme:

[0017] The utility model provides a battery pack, which comprises a box body, the battery cell and the above-mentioned battery pack hoisting structure, the box cover is sealingly connected to the opening of the box body to form a battery box, and the bottom support, the structural beam assembly and the battery cell are all located in the battery box.

[0018] Optionally, the battery cell and the box body are provided with foaming glue therebetween;

[0019] And / or, the battery cell and the cross beam of the structural beam assembly are provided with foaming glue therebetween.

[0020] Optionally, the utility model further comprises a liquid cooling plate, the liquid cooling plate is connected to the bottom support, and the liquid cooling plate is bonded to the bottom of the battery cell.

[0021] Optionally, the utility model further comprises a sealing ring and a fixing piece, the sealing ring is clamped between the box cover and the box body, the fixing piece passes through the through holes of the box cover, the sealing ring and the box body in sequence, and the fixing piece is riveted to the box body.

[0022] Optionally, the box body is formed by punching and stamping sheet metal.

[0023] The utility model has the advantages of:

[0024] The utility model provides a battery pack hoisting structure, which comprises a bottom support, a structural beam assembly, a box cover and a hoisting support. The bottom support is arranged below the battery cell and can support the battery cell. The structural beam assembly is connected to the bottom support, and the box cover is connected to the structural beam assembly. The hoisting support is arranged on the outer side of the box cover, connected to the box cover and provided with a hoisting point on the hoisting support, i.e. the hoisting point is located above the battery pack, so that the normal hoisting of the battery pack can be ensured under the condition that the length and width space is limited. The weight of the battery cell can be transmitted to the box cover through the bottom support and the structural beam assembly, the hoisting support connected to the box cover can improve the structural strength of the box cover and prevent the box cover from being deformed.

[0025] The utility model also provides a battery pack, including box, electric core and above -mentioned battery pack hoist and dress structure, the box cover sealed connection is in the opening portion of box, to form battery box, bottom support, structural beam subassembly and electric core all are located in battery box. The battery pack can guarantee normal hoist under the condition of long width space is limited, and can prevent the stress deformation of box cover. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structural schematic diagram of battery pack provided by the utility model embodiment;

[0027] Figure 2 It is the first explosion drawing of battery pack provided by the utility model embodiment;

[0028] Figure 3 It is the second explosion drawing of battery pack provided by the utility model embodiment;

[0029] Figure 4 It is the partial structure (including box) schematic diagram of battery pack provided by the utility model embodiment;

[0030] Figure 5 It is the partial structure (including box cover) schematic diagram of battery pack provided by the utility model embodiment.

[0031] In the drawing:

[0032] 1, bottom support;2, box cover;3, hoist support;301, hoisting point;4, crossbeam;5, expansion beam;6, first pressing strip;7, second pressing strip;701, butt joint hole;8, box;9, foaming glue;10, liquid cooling plate;11, sealing ring;12, fixed part;13, electric core;1301, explosion -proof valve;14, bolt. DETAILED DESCRIPTION

[0033] The technical scheme of the utility model will be further described below in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model, and not limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all.

[0034] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, can be fixed connection, also can be detachable connection;Can be mechanical connection, also can be electrical connection;It can be directly connected, also can be indirectly connected through intermediate medium, it can be the communication of two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] As shown in Figures 1-2 The battery pack hoisting structure of the embodiment includes a bottom support 1, a structural beam assembly, a box cover 2 and a hoisting support 3. The bottom support 1 is arranged below the battery cell 13, and the bottom support 1 can support the battery cell 13. The structural beam assembly is connected to the bottom support 1, the box cover 2 is connected to the structural beam assembly, and the box cover 2 and the structural beam assembly have multiple connection positions therebetween. The hoisting support 3 is arranged on the outer side of the box cover 2, the hoisting support 3 is connected to the box cover 2, and the hoisting support 3 and the box cover 2 have multiple connection areas therebetween. The hoisting support 3 is provided with a hoisting point 301, that is, the hoisting point is located above the battery pack, so that the normal hoisting of the battery pack can be ensured in the case of limited length and width space. Alternatively, in the embodiment, the hoisting support 3 is welded on the outer side of the box cover 2, so that the hoisting support 3 and the box cover 2 have multiple connection areas therebetween.

[0037] The weight of the battery cell 13 can be transmitted to the box cover 2 through the bottom support 1 and the structural beam assembly, and since the box cover 2 and the structural beam assembly have multiple connection positions therebetween, the force received by the box cover 2 from the structural beam assembly can be more dispersed, so that deformation due to local force concentration can be avoided. Moreover, the hoisting support 3 connected to the box cover 2 can further improve the structural strength of the box cover 2, so that deformation of the box cover 2 can be prevented. Furthermore, since the hoisting support 3 and the box cover 2 have multiple connection areas therebetween, the force received by the box cover 2 from the hoisting support 3 can be more dispersed, so that deformation of the box cover 2 due to local force concentration can be avoided. Therefore, the battery pack hoisting structure not only can ensure normal hoisting in the case of limited length and width space, but also can prevent the box cover 2 from deforming due to force.

[0038] As shown in Figure 2As shown, optionally, the structural beam assembly includes a cross beam 4 extending along the length direction of the battery pack, the cross beam 4 is connected with the bottom support 1 and the box cover 2, the cross beam 4 can improve the structural strength of the battery pack along the length direction and can transmit the force to the box cover 2. Since the existing battery pack in the hoisting process, the hoisting point 301 is arranged on the box cover 2, the connection position between the box cover 2 and the box body 8 is the stress position of the box cover 2, the battery pack hoisting structure of the embodiment can increase the stress position of the box cover 2, not only the stress at the connection position with the box body 8, but also the stress at the connection position with the cross beam 4, thereby the local stress of the box cover 2 can be reduced, and the deformation of the box cover 2 can be avoided.

[0039] Optionally, the structural beam assembly includes an expansion beam 5 extending along the width direction of the battery pack, the expansion beam 5 is connected with the bottom support 1 and the box cover 2, thereby the stress position of the box cover 2 can be further increased, the local stress of the box cover 2 can be further reduced, and the deformation can be prevented.

[0040] Optionally, the expansion beam 5 is provided with two, the two expansion beams 5 are arranged at intervals. In the embodiment, one expansion beam 5 is close to one end in the length direction of the battery pack, and the other expansion beam 5 is located between the cell cavity and the electrical cavity, and can also play a role of spacing and limiting. Optionally, one end of the cross beam 4 is connected to one expansion beam 5, and the other end is connected to the other expansion beam 5, that is, the cross beam 4 also has the function of limiting the distance between the two expansion beams 5. Optionally, the cross beam 4 and the expansion beam 5 are both made of aluminum extruded profiles.

[0041] As shown, Figure 3 Optionally, the battery pack hoisting structure further includes a first pressing strip 6, both ends of the first pressing strip 6 are connected to the two expansion beams 5 respectively, and the first pressing strip 6 is connected with the box cover 2. The arrangement of the first pressing strip 6 can prevent the expansion beam 5 from deforming or even failing under stress when the cell 13 expands. In the embodiment, the first pressing strip 6 is provided with two, the two first pressing strips 6 are arranged at intervals in the width direction of the battery pack, and since the two expansion beams 5 need to be connected, the length direction of the first pressing strip 6 is consistent with the length direction of the battery pack. Optionally, the first pressing strip 6 is obtained by stamping sheet metal, which can ensure the structural strength of the first pressing strip 6. Optionally, the first pressing strip 6 is also bonded with the CCS cooling system and the cell 13, so as to press the cell 13 and fix the position of the CCS.

[0042] Optionally, the battery pack hoisting structure further includes a second pressing strip 7, both ends of the second pressing strip 7 are connected to the two expansion beams 5 respectively, and the second pressing strip 7 is connected with the box cover 2. The arrangement of the second pressing strip 7 can further prevent the expansion beam 5 from deforming or even failing under stress when the cell 13 expands.

[0043] Optionally, in the embodiment, the length direction of the second pressing strip 7 is still consistent with the length direction of the battery pack, and since the battery cells 13 in the embodiment are arranged in two rows, each row of battery cells 13 is sequentially arranged by a plurality of battery cells 13 along the length direction of the battery pack, and the two rows of battery cells 13 are sequentially arranged along the width direction of the battery pack, and the middle part of the two rows of battery cells 13 has the cross beam 4, in order to prevent the battery cells 13 from moving along the thickness direction of the battery pack, two second pressing strips 7 are also arranged, and are arranged above the two rows of battery cells 13, respectively. Of course, in other embodiments, one row, three rows, four rows, five rows or more rows of battery cells 13 can be arranged, and the number of second pressing strips 7 is matched with the number of rows of battery cells 13, and each row of battery cells 13 is arranged one by one.

[0044] As shown in Figures 4-5 Optionally, the second pressing strip 7 has a channel opened along the length direction of the battery pack, the second pressing strip 7 is provided with a plurality of butt joints 701, the plurality of butt joints 701 are in communication with the channel, and the plurality of butt joints 701 are respectively directed to the pressure relief valves of the plurality of battery cells 13. Since the top cover of each battery cell 13 is arranged in the direction of the box cover 2, and in the embodiment, the pressure relief valves of the same row of battery cells 13 are located on a straight line, the second pressing strip 7 can cover the pressure relief valves of one row of battery cells 13, and a large amount of gas released at the pressure relief valve of the battery cell 13 when the battery cell 13 is out of control can enter the channel of the second pressing strip 7 through the butt joint 701, and be transmitted to the end of the battery pack, thereby facilitating the discharge of the battery pack, that is, the channel in the second pressing strip 7 can serve as a pressure relief channel when the battery cell 13 is out of control. Optionally, the second pressing strip 7 is processed from an aluminum extruded profile.

[0045] Optionally, the cross beam 4, the expansion beam 5 and the first pressing strip 6 are connected to the box cover 2 by bolts 14, and the second pressing strip 7 is bonded to the inner end face of the box cover 2. The battery pack hoisting structure greatly increases the stress position of the box cover 2, and can effectively prevent the deformation thereof.

[0046] Optionally, the hoisting support 3 includes a mouth-shaped frame and a T-shaped inner frame, which are fixed between each other. The mouth-shaped frame can maximize the structural strength of the edge of the box cover 2, and ensure that the box cover 2 is not deformed due to the force transmitted by the box body 8. At the same time, the T-shaped inner frame corresponds to the positions of the expansion beam 5 and the cross beam 4 in the middle part, that is, the box cover 2 at this position is subjected to a larger force of the expansion beam 5 and the cross beam 4, and the T-shaped inner frame can ensure that the box cover 2 at this position is not deformed. Optionally, the hoisting points 301 are uniformly distributed on the mouth-shaped frame and the T-shaped inner frame, which can ensure that the stress of the hoisting support 3 at each position during hoisting is relatively balanced.

[0047] The embodiment also provides a battery pack, which comprises a box body 8, battery cells 13 and the battery pack hoisting structure described above, the box cover 2 is sealingly connected to the opening of the box body 8 to form a battery box, the bottom support 1, the structural beam assembly and the battery cells 13 are all located in the battery box.

[0048] Optionally, the foam glue 9 is arranged between the battery cell 13 and the box 8. In the embodiment, the foam glue 9 is poured between the side wall of the battery cell 13 and the side wall of the box 8, so that the battery cell 13 and the box 8 are integrated, and the structural strength of the whole package is improved.

[0049] Optionally, the foam glue 9 is arranged between the battery cell 13 and the cross beam 4 of the structural beam assembly, so that the structural strength of the whole package is further improved.

[0050] Optionally, the battery package further comprises a liquid cooling plate 10, so as to adjust the temperature of the battery cell 13. The liquid cooling plate 10 is arranged above the bottom support 1, and the liquid cooling plate 10 is connected to the bottom support 1 and bonded to the bottom of the battery cell 13. Optionally, the liquid cooling plate 10 is bonded to the bottom of the battery cell 13 through the heat-conducting structural glue, so as to ensure the heat transfer efficiency between the two. Optionally, the liquid cooling plate 10 is fixed to the bottom support 1 through the draw core rivet and the structural glue, so as to ensure the firm connection between the two, and part of the weight of the battery cell 13 is transmitted to the bottom support 1 through the liquid cooling plate 10.

[0051] Optionally, the battery package further comprises a sealing ring 11 and a fixing piece 12. The sealing ring 11 is arranged between the box cover 2 and the box 8, the fixing piece 12 passes through the through holes of the box cover 2, the sealing ring 11 and the box 8 in sequence, and the fixing piece 12 is riveted to the box 8. Optionally, the structural glue is further arranged between the box cover 2 and the box 8, so as to ensure the sealing and waterproof. Optionally, the fixing piece 12 is an SPR rivet.

[0052] Optionally, the box 8 is formed by stamping a sheet metal, so as to ensure the structural strength of the box 8. Optionally, the second pressing strip 7 is arranged close to the box 8, and the inner side wall of the box 8 is provided with a connecting lug, and the second pressing strip 7 is screwed with the connecting lug of the box 8.

[0053] The battery package can be normally hoisted in the case that the length and width space is limited, and the box cover 2 is prevented from being deformed under stress.

[0054] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation to the embodiments of the utility model. For the ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not enumerated. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A battery pack hoisting structure, characterized by, The application relates to a battery pack hoisting structure. The battery pack hoisting structure comprises a bottom support (1) arranged below an electric core (13), wherein the bottom support (1) can support the electric core (13); a structure beam assembly connected to the bottom support (1); a box cover (2) connected to the structure beam assembly; and a hoisting support (3) arranged outside the box cover (2), wherein the hoisting support (3) is connected to the box cover (2) and is provided with a hoisting point (301). The hoisting support (3) and the box cover (2) are connected through multiple connection areas. The structure beam assembly comprises a cross beam (4) extending along the length direction of the battery pack, wherein the cross beam (4) is connected to the bottom support (1) and the box cover (2); and / or the structure beam assembly comprises an expansion beam (5) extending along the width direction of the battery pack, wherein the expansion beam (5) is connected to the bottom support (1) and the box cover (2). The expansion beam (5) is provided with two first pressing strips (6), wherein the two ends of each first pressing strip (6) are connected to the two expansion beams (5) respectively, and the first pressing strip (6) is connected to the box cover (2).

2. The battery pack hoisting structure according to claim 1, characterized by The expansion beam (5) is provided with two second pressing strips (7), wherein the two ends of each second pressing strip (7) are connected to the two expansion beams (5) respectively, and the second pressing strip (7) is connected to the box cover (2), the second pressing strip (7) is provided with a channel along the length direction of the battery pack, and the second pressing strip (7) is provided with multiple butt joints (701) in communication with the channel, and the multiple butt joints (701) are respectively directed to the pressure relief valves of the multiple electric cores (13).

3. The hoisting structure for a battery pack according to claim 1 or 2, characterized by, The application further relates to a battery box comprising a box body (8), the electric core (13) and the battery pack hoisting structure, wherein the box cover (2) is sealingly connected to the opening of the box body (8) to form the battery box, and the bottom support (1), the structure beam assembly and the electric core (13) are arranged in the battery box. The electric core (13) and the box body (8) are filled with foaming glue (9).

4. The battery pack hoisting structure according to claim 3, characterized by The electric core (13) and the cross beam (4) of the structure beam assembly are filled with foaming glue (9).

5. The battery pack hoisting structure according to claim 3, characterized by The battery pack hoisting structure further comprises a liquid cooling plate (10) connected to the bottom support (1) and adhered to the bottom of the electric core (13).

6. A battery pack characterized by, The battery pack hoisting structure further comprises a sealing ring (11) arranged between the box cover (2) and the box body (8), and a fixing member (12) penetrating through the through holes of the box cover (2), the sealing ring (11) and the box body (8) in sequence and riveted to the box body (8).

7. The battery pack of claim 6, wherein, The box body (8) is formed by stamping a metal plate. ​ 8. The battery pack of claim 6, wherein, ​ 9. The battery pack of claim 6, wherein, ​ 10. The battery pack of claim 6, wherein, ​

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