Battery box and battery pack
By installing a bracket assembly and a support component that is spaced apart from the expansion beam and connected to the battery box, the problem of BMS bracket deformation due to expansion beam displacement is solved, the stability of electronic component wiring harness connection is achieved, and the reliability of the battery box is improved.
Patent Information
- Application Number
- CN202423005461.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-05
AI Technical Summary
In the existing technology, the BMS bracket is directly locked onto the integral extruded structure of the expansion beam. As the cell expansion force increases, the bracket will shift and deform, leading to locking failure and affecting the stability of the BMS harness connection.
The bracket assembly and expansion beam are spaced apart and connected to the box through the support component to prevent the bracket from deforming due to the displacement of the expansion beam. The support component and the box fix the BMS bracket to ensure the stable connection of the wiring harness.
This effectively prevents the BMS bracket from deforming due to the displacement of the expansion beam, ensuring normal wiring connections for electronic components and improving the stability and reliability of the battery box.
Smart Images
Figure CN223728900U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to energy storage equipment technical field especially, relates to a battery box and battery pack. BACKGROUND
[0002] The BMS support will be locked on the extruded profile structure of the expansion beam to ensure that the BMS support is fixed firmly. However, the expansion beam is directly resistant to the expansion force of the battery cell. In the later stage of the battery cell life, the expansion force of the battery cell will increase, and the expansion beam will also displace to a certain extent due to the increased stress. The BMS support directly locked on the extruded profile structure of the expansion beam will be displaced together, causing the deformation of the BMS support locking, and even causing the locking failure and the functional problem of the BMS wire harness connection. SUMMARY
[0003] One object of the utility model is to provide a battery box, which can avoid the displacement deformation of the support of the electronic device with the expansion beam and ensure the normal connection of the wire harness of the electronic device.
[0004] To achieve the above object, the utility model adopts the following technical scheme:
[0005] The utility model provides a battery box, which comprises:
[0006] a box body;
[0007] an expansion beam for abutting against a battery cell, the expansion beam being arranged in the box body;
[0008] a support assembly for mounting an electronic device, the support assembly being arranged in the box body, the support assembly being connected to the box body and being arranged in a spaced manner with the expansion beam.
[0009] Optionally, the support assembly comprises a BMS support and a support piece, and the support piece is connected to the box body and the BMS support.
[0010] Optionally, a first surface of the expansion beam faces the BMS support, the support piece has a profiled avoiding surface, the profiled avoiding surface faces the first surface and is arranged in a spaced manner with the first surface.
[0011] Optionally, an included angle between the first surface and a bottom wall of the box body is an acute angle, the first surface is inclined away from the bottom wall of the box body, the profiled avoiding surface is parallel to the first surface, the support piece has a second surface, a plane where the second surface is located is perpendicular to the bottom wall of the box body, the second surface is in abutment with the profiled avoiding surface, and the profiled avoiding surface is closer to the bottom wall of the box body than the second surface.
[0012] Optionally, a cable tie hole is formed in the support, and the cable tie hole is used for fixing a cable tie.
[0013] Optionally, one end of the support is connected to the BMS support, and the other end is connected to the inner bottom surface of the box.
[0014] Optionally, one end of the support is connected to the BMS support, and the other end is connected to the inner bottom surface of the box.
[0015] Optionally, a through hole is formed in the support along a first direction, and the first direction is a length direction of the BMS support.
[0016] Optionally, a plurality of supports are arranged at intervals along a first direction, and the plurality of supports are connected to the BMS support, and the first direction is a length direction of the BMS support.
[0017] Optionally, the inner side of the box has a connecting lug, and the BMS support is connected to the connecting lug.
[0018] Another purpose of the utility model is to provide a battery pack, which can avoid displacement and deformation of the support of the electronic device along with the expansion beam, and ensure normal connection of the wire harness of the electronic device.
[0019] To achieve the purpose, the utility model adopts the following technical scheme.
[0020] The utility model provides a battery pack, which comprises a battery box and an electric core.
[0021] The utility model has the advantages of the following:
[0022] The utility model provides a battery box, which comprises a box body, an expansion beam and a support assembly.
[0023] The utility model also provides a battery pack, which comprises a battery box and an electric core. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 Fig. 1 is a partial structural schematic view of the first perspective of the battery box provided by the utility model embodiment.
[0025] Figure 2 is Figure 1 is an enlarged view of A in Fig. 1.
[0026] Figure 3 is a partial structure schematic view of a second visual angle of the battery box provided by the embodiment of the utility model;
[0027] Figure 4 is a partial structure schematic view of a third visual angle of the battery box provided by the embodiment of the utility model;
[0028] Figure 5 is Figure 4 B-B section view in it;
[0029] Figure 6 is Figure 5 Enlarged view at C in it.
[0030] In the figure:
[0031] 1, box body;11, connecting lug;101, electrical bin;102, electric core cavity;
[0032] 2, expansion beam;21, first surface;3, BMS support;
[0033] 4, support piece;41, with type avoidance surface;42, cable tie hole;43, through hole;44, second surface. DETAILED DESCRIPTION
[0034] The technical scheme of the utility model will be further explained below in combination with the drawings and embodiments.It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to 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.
[0035] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connected", "connected" should be understood broadly, for example, it can be fixed connection, also can be detachable connection;It 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.
[0036] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature is in second feature "on", "above" and "upper surface" include that first feature is in second feature directly above and obliquely above, or only indicate that first feature horizontal height is higher than second feature.First feature is in second feature "under", "below" and "under" include that first feature is in second feature directly below and obliquely below, or only indicate that first feature horizontal height is less than second feature.
[0037] A BMS support is generally arranged in the box body of the battery pack to facilitate arrangement of components of the electrical compartment. The BMS support is generally locked on the extruded profile structure of the expansion beam to ensure that the BMS support is fixed firmly. However, the expansion beam is a component directly resisting the expansion force of the battery cell, and the expansion force of the battery cell will increase as the battery cell ages, and the expansion beam will also displace to different degrees due to the increased stress. The BMS support directly locked on the extruded profile structure of the expansion beam will be displaced together, causing deformation of the BMS support locking, and in severe cases, the locking will fail, resulting in functional problems of the BMS wire harness connection.
[0038] To solve the above problems, the embodiment provides a battery box, which can avoid displacement and deformation of the support of the electronic device with the expansion beam, and ensure normal connection of the wire harness of the electronic device.
[0039] As shown in Figures 1-6 The battery box of the embodiment includes a box body 1, an expansion beam 2 and a support assembly. Figure 1 The ab direction in the figure is a first direction, and the cd direction is a second direction. Alternatively, in the embodiment, the first direction is the width direction of the box body 1, and the second direction is the length direction of the box body 1.
[0040] The expansion beam 2 is used to abut against the battery cell, and is arranged in the box body 1. The support assembly is used to mount the electronic device, and is arranged in the box body 1, is connected to the box body 1, and is arranged in a spaced manner with the expansion beam 2, so that the support assembly is not easily affected by the expansion beam 2, that is, the support assembly will not be displaced and deformed with the expansion beam 2, and the electronic device is firmly connected in the box body 1, so that the wire harness connection of the electronic device is normal. In this embodiment, the support assembly includes a BMS support 3 and a support piece 4, and the support piece 4 is connected to the box body 1 and the BMS support 3. That is, the expansion beam 2, the BMS support 3 and the support piece 4 are arranged in the box body 1, and the BMS support 3 is arranged in a spaced manner with the expansion beam 2. The support piece 4 is connected to the box body 1 and the BMS support 3, and is used to support and fix the BMS support 3, and is arranged in a spaced manner with the expansion beam 2. The BMS support 3 is fixed in the box body 1 by the support piece 4, and the BMS support 3 and the support piece 4 are arranged in a spaced manner with the expansion beam 2, and the gap between the BMS support 3, the support piece 4 and the expansion beam 2 provides a space for the deformation of the expansion beam 2, so that the BMS support 3 is firmly connected to the box body 1 and is not easily affected by the expansion beam 2, that is, the BMS support 3 will not be displaced and deformed with the expansion beam 2, so that the BMS wire harness connection is normal.
[0041] Optionally, the expansion beam 2 divides the internal space of the box body 1 into an electrical compartment 101 and a battery cell cavity 102, the electrical compartment 101 is used to arrange the BMS support 3, the support piece 4, the BMS wire harness and the like, and the battery cell is placed in the battery cell cavity 102. Optionally, the electrical compartment 101 and the battery cell cavity 102 are arranged in sequence along the second direction, and the expansion beam 2 is arranged in an extending manner along the first direction.
[0042] Optionally, the first face 21 of the expansion beam 2 faces the BMS support 3, and the support piece 4 has a profiled avoiding face 41 facing the first face 21 and arranged in a spaced manner with the first face 21. The support piece 4 is arranged close to the expansion beam 2, and the profiled avoiding face 41 is arranged to avoid the profile of the expansion beam 2.
[0043] Optionally, the included angle between the first face 21 and the bottom wall of the box body 1 is an acute angle, that is, the first face 21 is arranged in an inclined manner, and the profiled avoiding face 41 is parallel to the first face 21, so as to ensure that there is no position with too close distance between the two. Optionally, in this embodiment, the first face 21 is inclined toward the top face of the box body 1, and correspondingly, the profiled avoiding face 41 is inclined toward the bottom wall of the box body 1.
[0044] Optionally, the support member 4 has a second surface 44, the plane of which is perpendicular to the bottom wall of the housing 1. The second surface 44 is aligned with the conformal clearance surface 41, and the conformal clearance surface 41 is closer to the bottom wall of the housing 1 than the second surface 44. That is, there is a certain bending angle between the second surface 44 and the conformal clearance surface 41. The second surface 44 is not set as an extension of the conformal clearance surface 41, which can increase the distance between the second surface 44 and the first surface 21 of the expansion beam 2, thereby saving space in the electrical compartment 101.
[0045] Optionally, in this embodiment, the BMS bracket 3 is spaced apart from the bottom wall of the housing 1, and the support member 4 is located between the BMS bracket 3 and the bottom wall of the housing 1. Optionally, one end of the support member 4 is connected to the BMS bracket 3, and the other end is connected to the inner bottom surface of the housing 1, that is, the height direction of the support member 4 is consistent with the thickness direction of the housing 1. Optionally, the bottom of the support member 4 is welded to the inner bottom surface of the housing 1, and the top of the support member 4 is screwed to the BMS bracket 3 to facilitate the assembly and disassembly of the support member 4 and the BMS bracket 3. Optionally, a threaded hole is opened on the top of the support member 4, and a hole is opened at the corresponding position of the BMS bracket 3. A bolt passes through the hole of the BMS bracket 3 and engages with the threaded hole on the top of the support member 4 to fix the two together. The support member 4 has a certain height, that is, there is a certain distance between the BMS bracket 3 and the bottom surface of the housing 1, and the two, together with the front end plate of the housing 1 and the expansion beam 2, form an accommodating space.
[0046] Optionally, in this embodiment, since the support member 4 has a certain height, the conformal clearance surface 41 is only located within the range from the middle to the bottom of the support member 4, and the upper wall of the support member 4 is perpendicular to the bottom surface of the box 1.
[0047] Optionally, in other embodiments, the support member 4 may also be connected to other walls of the housing 1 other than the bottom surface. For example, one end of the support member 4 is connected to the BMS bracket 3 and the other end is connected to the inner wall of the housing 1, so that the two ends of the BMS bracket 3 along the first direction and the two inner walls of the housing 1 that are opposite to each other can be fixed.
[0048] To facilitate the fixing of the wire harness, the support member 4 may optionally have a cable tie hole 42 for fixing the cable tie, which is used to fix the wire harness to prevent the wire harness from becoming messy and short-circuited.
[0049] Optionally, the support member 4 has a through hole 43 extending along a first direction, which is the length direction of the BMS bracket 3, to reduce the weight of the support member 4. Optionally, the support member 4 is cut from an extruded aluminum profile. Optionally, in this embodiment, the support member 4 has a square columnar structure. Of course, in other embodiments, the support member 4 can also be set in other forms according to space requirements, which is not limited here.
[0050] Optionally, the plurality of support members 4 are arranged at intervals along the first direction, and the plurality of support members 4 are connected to the BMS support 3, so that the stress of the BMS support 3 along the first direction is more balanced.
[0051] Optionally, the inner side of the box body 1 is provided with a connecting lug 11, and the BMS support 3 is connected to the connecting lug 11. Optionally, the BMS support 3 is screwed with the connecting lug 11, that is, a threaded hole is formed in the connecting lug 11, a hole is formed in the BMS support 3, and a bolt is screwed through the hole of the BMS support 3 and the threaded hole of the connecting lug 11, so that the BMS support 3 is fixed on the connecting lug 11. Optionally, in the embodiment, the connecting lug 11 is located at the front end plate of the box body 1, that is, the connecting lug 11 and the support member 4 are oppositely arranged along the second direction, so that the stress of the BMS support 3 along the second direction is more balanced, and the BMS support 3 is less likely to tilt.
[0052] Optionally, the plurality of connecting lugs 11 are arranged at intervals along the first direction, and the plurality of connecting lugs 11 are connected to the BMS support 3, and the first direction is the length direction of the BMS support 3, so that the stress of the BMS support 3 along the first direction is more balanced.
[0053] Therefore, the two opposite long edges of the BMS support 3 are fixed on one side by the plurality of connecting lugs 11 and on the other side by the plurality of support members 4, so that the BMS support 3 is stably connected to the box body 1. Moreover, the BMS support 3 does not contact the expansion beam 2, and the gap between the BMS support 3 and the expansion beam 2 provides space for the deformation or displacement of the expansion beam 2, so that the BMS support 3 is less likely to displace or deform with the expansion beam 2, and the BMS support 3 is less likely to fail.
[0054] The embodiment also provides a battery pack comprising a battery cell and the battery box, and the battery cell is arranged in the box body 1. Optionally, in the embodiment, the battery cell is arranged in the battery cell cavity 102. Optionally, one or more expansion beams 2 are further arranged in the battery cell cavity 102, so as to further partition the battery cell cavity 102, so that a plurality of groups of battery cells are arranged, and each group of battery cells comprises a plurality of layers of stacked battery cells.
[0055] The battery pack can avoid the displacement and deformation of the BMS support 3 with the expansion beam 2, and ensure the normal connection of the BMS wire harness.
[0056] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or changes can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. 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 box, characterized by The battery box comprises: a box body (1); an expansion beam (2) for abutting against an electric cell, the expansion beam (2) being arranged in the box body (1); a support assembly for mounting electronic devices, the support assembly being arranged in the box body (1), the support assembly being connected to the box body (1) and being arranged in spaced relation to the expansion beam (2).
2. The battery pack of claim 1, wherein, The support assembly comprises a BMS support (3) and a support piece (4), the support piece (4) being connected to the box body (1) and the BMS support (3).
3. The battery pack of claim 2, wherein, A first face (21) of the expansion beam (2) faces the BMS support (3), the support piece (4) has a profiled avoiding face (41) facing the first face (21) and being arranged in spaced relation to the first face (21) in profile.
4. The battery pack of claim 3, wherein, An included angle between the first face (21) and a bottom wall of the box body (1) is an acute angle, the first face (21) is inclined away from the bottom wall of the box body (1), the profiled avoiding face (41) is parallel to the first face (21), the support piece (4) has a second face (44), a plane in which the second face (44) lies is perpendicular to the bottom wall of the box body (1), the second face (44) is in butt joint with the profiled avoiding face (41), and the profiled avoiding face (41) is closer to the bottom wall of the box body (1) than the second face (44).
5. The battery pack of claim 2, wherein, A cable tie hole (42) is formed in the support piece (4), the cable tie hole (42) being used for fixing a cable tie.
6. The battery box according to any one of claims 2 to 5, characterized in that One end of the support piece (4) is connected to the BMS support (3), and the other end is connected to an inner bottom face of the box body (1); or one end of the support piece (4) is connected to the BMS support (3), and the other end is connected to an inner side wall of the box body (1).
7. The battery box according to any one of claims 2 to 5, characterized in that The support piece (4) is provided with a through hole (43) extending therethrough in a first direction, the first direction being a length direction of the BMS support (3).
8. The battery box according to any one of claims 2 to 5, characterized in that A plurality of support pieces (4) are arranged in spaced relation in the first direction, the plurality of support pieces (4) being connected to the BMS support (3), the first direction being the length direction of the BMS support (3).
9. The battery box according to any one of claims 2 to 5, characterized in that, An inner side of the box body (1) is provided with a connecting lug (11), the BMS support (3) being connected to the connecting lug (11).
10. A battery pack, characterized by, The battery box comprises an electric cell and the battery box as claimed in any one of claims 1-9, the electric cell being arranged in the box body (1).