Housing

Abstract

The utility model discloses a shell, which comprises two end plates arranged at an interval along a first direction, and at least one of the surfaces, deviating from each other, of the two end plates is provided with a weight reduction groove; the two first side plates are spaced in the second direction, the two first side plates are connected with the two end plates, at least one first side plate is provided with a first lightening hole, and the first direction is perpendicular to the second direction. According to the shell disclosed by the utility model, the heat dissipation effect of the plurality of battery cells in the shell is improved, gas can be conveniently discharged when the battery cells are in thermal runaway, the safety of the battery applying the shell is improved, the weight of the shell is reduced, the weight of the battery applying the shell is reduced, and the light weight is further realized.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a shell. Background Art

[0002] In the relevant technology, the new energy power device industry is in a stage of rapid development, and higher requirements are also put forward for battery modules. However, the shell of the existing battery module has serious heat accumulation, which makes it difficult for the battery core to dissipate heat, and there are certain safety risks. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a shell, which improves the heat dissipation effect of multiple battery cells located in the shell and facilitates gas discharge when thermal runaway occurs in the battery cells.

[0004] According to the shell of the embodiment of the utility model, it is used to accommodate a battery module, and the battery module includes a plurality of battery cells arranged in a stack, and is characterized in that it includes: an end plate, wherein the end plates are two spaced apart along a first direction, and at least one of the surfaces of the two end plates facing away from each other has a weight-reducing groove; a first side plate, wherein the first side plates are two spaced apart along a second direction, and the two first side plates are connected to the two end plates, and at least one of the first side plates has a first weight-reducing hole, and the first direction is perpendicular to the second direction.

[0005] According to the shell of the embodiment of the utility model, the end plates are two spaced apart along the first direction, the first side plates are two spaced apart along the second direction, the two first side plates are connected to the two end plates, at least one of the surfaces of the two end plates facing away from each other has a weight reducing groove, and at least one first side plate has a first weight reducing hole, so as to improve the heat dissipation effect of the multiple battery cells located in the shell, facilitate gas discharge when thermal runaway occurs in the battery cells, improve the safety of the battery using the shell, and effectively reduce the weight of the first side plate through the first weight reducing hole, and effectively reduce the weight of the end plate through the weight reducing groove, thereby reducing the weight of the shell, reducing the weight of the battery using the shell, and further achieving lightweight.

[0006] In some embodiments of the present invention, the first side plate includes: a main body, the main body is located on one side of the battery module along the second direction, and the first weight-reducing hole is arranged on the main body; a bending portion, the bending portion is provided at both ends of the main body along the first direction, and one end of the bending portion away from the main body is bent and extended along the second direction, and the two bending portions are respectively located on the side of the two end plates away from each other and are respectively connected to the two end plates.

[0007] In some embodiments of the utility model, the area opposite to the bending portion on the side of the two end plates facing away from each other is concave to form a recessed portion, the bending portion is arranged in the recessed portion, and the surfaces of the two bending portions away from each other are respectively flush with the surfaces of the two end plates away from each other.

[0008] In some embodiments of the present invention, reinforcing ribs are provided at the connection between the main body and the bending portion.

[0009] In some embodiments of the present invention, the reinforcing rib protrudes toward the end plate, and the end plate has a first positioning hole that cooperates with the reinforcing rib.

[0010] In some embodiments of the present invention, the reinforcing ribs are multiple and spaced apart along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0011] In some embodiments of the present invention, a second weight-reducing hole is provided at the connection between the main body and the bending portion.

[0012] In some embodiments of the utility model, an embedded nut is provided on the end plate, a connecting hole is provided on the bent portion, and the connecting hole and the embedded nut are connected by a fastener.

[0013] In some embodiments of the present invention, the first weight reduction holes are arranged in multiple rows and columns, multiple columns of the first weight reduction holes are spaced apart in the first direction, multiple rows of the first weight reduction holes are spaced apart in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; and / or, the weight reduction grooves are arranged in multiple rows and columns, multiple columns of the weight reduction grooves are spaced apart in the second direction, multiple rows of the weight reduction grooves are spaced apart in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0014] In some embodiments of the utility model, it also includes: a second side panel, wherein the second side panel is two spaced apart along a third direction, the two ends of the two side panels along the first direction are respectively connected to the two end panels, the first side panel has second positioning holes at both ends along the third direction, the second side panel has positioning protrusions that cooperate with the second positioning holes at both ends along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a structural diagram of a housing according to an embodiment of the utility model;

[0018] Figure 2 is a structural diagram of a first side plate according to an embodiment of the utility model;

[0019] Figure 3 is a structural diagram of an end plate according to an embodiment of the utility model;

[0020] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0021] Reference numerals:

[0022] 100. Shell;

[0023] 2. End plate; 21. Weight reduction groove; 22. Concave portion; 23. First positioning hole; 24. Embedded nut;

[0024] 3. First side plate; 31. Main body; 311. First weight-reducing hole; 312. Second positioning hole; 32. Bending portion; 33. Reinforcing rib; 34. Second weight-reducing hole; 35. Connecting hole. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The housing 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, a housing 100 according to an embodiment of the utility model is shown. The housing 100 is used to accommodate a battery module, and the battery module includes a plurality of battery cells arranged in a stacked manner.

[0030] Specifically, the housing 100 includes an end plate 2 and a first side plate 3. The end plates 2 are two spaced apart in a first direction, at least one of the surfaces of the two end plates 2 facing away from each other has a weight-reducing groove 21, the first side plates 3 are two spaced apart in a second direction, the two first side plates 3 are connected to the two end plates 2, at least one first side plate 3 has a first weight-reducing hole 311, and the first direction is perpendicular to the second direction.

[0031] It is understandable that the two end plates 2 and the two first side plates 3 define a storage space, and multiple battery cells are stacked and arranged in the storage space. Therefore, by setting the first weight-reducing hole 311 and the weight-reducing groove 21, the heat dissipation effect of multiple battery cells is improved, and when the battery cell has thermal runaway, it is convenient to discharge gas, thereby improving the safety of the battery using the housing 100. At the same time, the first weight-reducing hole 311 effectively reduces the weight of the first side plate 3, and the weight-reducing groove 21 effectively reduces the weight of the end plate 2, thereby reducing the weight of the housing 100, reducing the weight of the battery using the housing 100, and further achieving lightweight. In addition, the first weight-reducing hole 311 effectively avoids the occurrence of poor flatness due to the stress of the first side plate 3, and the weight-reducing groove 21 effectively avoids the occurrence of poor flatness due to the stress of the end plate 2, thereby further improving the reliability of the housing 100.

[0032] The two first side panels 3 are connected to the two end panels 2. When the end panels 2 are subjected to force, the force can be transferred to the first side panels 3, so that the overall structure of the housing 100 is more stable, less prone to obvious deformation, and better distributes the expansion force of the battery cell, thereby improving reliability. Furthermore, the hardness of the first side panel 3 is greater than the hardness of the end panel 2. Therefore, when the end panel 2 is subjected to force, it can absorb the force through moderate deformation, and the overall structural strength is ensured by the first side panel 3 with greater hardness, thereby ensuring the overall integrity of the housing 100. Optionally, the material of the first side panel 3 is AL5083, and the material of the end panel 2 is PA6+GF30

[0033] Optionally, the two first side plates 3 each have a first weight-reducing hole 311, and the two end plates 2 each have a weight-reducing groove 21. Thus, such an arrangement further improves the heat dissipation effect of the multiple battery cells in the housing 100, further reduces the weight of the housing 100, and improves the flatness of the two first side plates 3 and the two end plates 2.

[0034] Furthermore, multiple battery cells are stacked and arranged along the first direction. Thus, by having two end plates 2 spaced apart along the first direction and the weight-reducing grooves 21 located on surfaces of the two end plates 2 facing away from each other, multiple battery cells are stacked and arranged along the first direction in the accommodating space.

[0035] According to the housing 100 of the embodiment of the utility model, the end plates 2 are two spaced apart along the first direction, the first side plates 3 are two spaced apart along the second direction, the two first side plates 3 are connected to the two end plates 2, and at least one of the surfaces of the two end plates 2 facing away from each other is provided with a weight-reducing groove 21, and at least one first side plate 3 has a first weight-reducing hole 311, so as to improve the heat dissipation effect of the multiple battery cells located in the housing 100, and facilitate gas discharge when thermal runaway occurs in the battery cells, thereby improving the safety of the battery using the housing 100, and the weight of the first side plate 3 is effectively reduced through the first weight-reducing hole 311, and the weight-reducing groove 21 effectively reduces the weight of the end plate 2, thereby reducing the weight of the housing 100, reducing the weight of the battery using the housing 100, and further achieving lightweight.

[0036] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the first side plate 3 includes a body 31 and a bending portion 32. The body 31 is located on one side of the battery module along the second direction, the first weight-reducing hole 311 is provided on the body 31, and the two ends of the body 31 along the first direction are provided with bending portions 32, and one end of the bending portion 32 away from the body 31 is bent and extended along the second direction, and the two bending portions 32 are respectively located on the side away from each other of the two end plates 2 and are respectively connected to the two end plates 2. Thus, the connection between the first side plate 3 and the end plate 2 is achieved through the bending portion 32, and the one end of the bending portion 32 away from the body 31 is bent and extended along the second direction, so as to ensure the connection strength between the bending portion 32 and the end plate 2, and improve the overall reliability of the shell 100. At the same time, when the end plate 2 is subjected to force, the force is transmitted to the body 31 through the bending portion 32, thereby increasing the force transmission area, so as to better utilize the strength of the first side plate 3 to improve the stability of the shell 100.

[0037] In some embodiments of the present invention, Figure 1-Figure 4As shown, the area opposite to the bent portion 32 on the side of the two end plates 2 facing away from each other is concave to form a recessed portion 22, and the bent portion 32 is arranged in the recessed portion 22, and the surfaces of the two bent portions 32 away from each other are respectively flush with the surfaces of the two end plates 2 away from each other. Therefore, by making the surfaces of the two bent portions 32 away from each other flush with the surfaces of the two end plates 2 away from each other, it is ensured that the two outer surfaces of the housing 100 along the first direction are flush, which facilitates the housing 100 to be installed in the battery pack and improves space utilization.

[0038] In some embodiments of the present invention, Figure 2 As shown, a reinforcing rib 33 is provided at the connection between the body 31 and the bent portion 32. Thus, the reinforcing rib 33 improves the structural strength of the connection between the body 31 and the bent portion 32, and ensures that the bent portion is not easily deformed, thereby improving the connection strength between the end plate 2 and the first side plate 3, and improving the overall reliability of the housing 100.

[0039] In some embodiments of the present invention, Figure 1-Figure 4 As shown, the reinforcing rib 33 protrudes toward the end plate 2, and the end plate 2 has a first positioning hole 23 that matches the reinforcing rib 33. Therefore, by pre-positioning the reinforcing rib 33 and the first positioning hole 23, the assembly difficulty of the connection between the bending portion 32 and the end plate 2 is reduced, and the assembly efficiency is improved.

[0040] In some embodiments of the present invention, Figure 2 As shown, the reinforcing ribs 33 are multiple and spaced apart along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. Thus, the structural strength of the connection between the body 31 and the bending portion 32 is further improved by the multiple reinforcing ribs 33, thereby further improving the overall reliability of the housing 100.

[0041] In some embodiments of the present invention, Figure 2 As shown, a second weight-reducing hole 34 is provided at the connection between the body 31 and the bent portion 32. Thus, the second weight-reducing hole 34 reduces the heat accumulation between the connection between the body 31 and the bent portion 32 and the end plate 2, further improves the heat dissipation of the battery cell, and reduces the probability of thermal runaway of the battery cell.

[0042] In some embodiments of the present invention, Figure 1-Figure 4 As shown, the end plate 2 is provided with an embedded nut 24, the bent portion 32 is provided with a connecting hole 35, and the connecting hole 35 and the embedded nut 24 are connected by a fastener. Thus, the connection between the end plate 2 and the bent portion 32 is achieved through such a setting, and the embedded nut 24 is provided on the end plate 2, which reduces the difficulty of connecting the two. At the same time, when the battery cell expands, the embedded nut 24 can further distribute the force, and the embedded nut 24 can better transfer the force to the bent portion 32, thereby better distributing the expansion force of the battery cell.

[0043] Furthermore, the embedded nuts 24 are multiple and spaced apart along the third direction, and the connecting holes 35 are multiple and correspond one to one with the embedded nuts 24 , thereby further ensuring the connection reliability between the end plate 2 and the bending portion 32 .

[0044] Furthermore, the diameters of the two embedded nuts 24 located at the two ends of the third direction among the multiple embedded nuts 24 are larger than the diameters of the other embedded nuts 24, two second weight-reducing holes 34 are provided at the connection between the body 31 and the bent portion 32, and the two connection holes 35 located at the two ends of the third direction are respectively arranged opposite to the two second weight-reducing holes 34 in the second direction. Thus, the heat dissipation of the second weight-reducing holes 34 and the structural strength of the bent portion 32 are ensured at the same time.

[0045] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the first weight-reducing holes 311 are arranged in multiple rows and columns, the multiple columns of the first weight-reducing holes 311 are spaced apart in the first direction, and the multiple rows of the first weight-reducing holes 311 are spaced apart in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. Thus, through such an arrangement, the heat dissipation effect of the multiple battery cells is further improved, the heat accumulation of the first side plate 3 is improved, and the heat spread speed is reduced.

[0046] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the weight-reducing grooves 21 are arranged in multiple rows and columns, the multiple columns of weight-reducing grooves 21 are spaced apart in the second direction, and the multiple rows of weight-reducing grooves 21 are spaced apart in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. Thus, through such an arrangement, the heat dissipation effect of multiple battery cells is further improved, the heat accumulation of the end plate 2 is improved, and the heat spread speed is reduced.

[0047] In some embodiments of the present invention, Figure 2 As shown, the housing 100 further includes a second side plate (not shown in the figure). The second side plates are two spaced apart along the third direction, and the two ends of the two side plates along the first direction are respectively connected to the two end plates 2, the first side plate 3 has a second positioning hole 312 at both ends along the third direction, and the second side plate has a positioning protrusion matched with the second positioning hole 312 at both ends along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0048] Thus, the two second side plates, the two end plates 2 and the two first side plates 3 define a closed accommodating space, ensuring the reliability of the multiple battery cells located in the accommodating space. At the same time, through the cooperation of the second positioning hole 312 and the positioning protrusion, a pre-positioning function is played during the connection process of the second side plate and the end plate 2, thereby reducing the difficulty of assembly and improving efficiency.

[0049] Furthermore, the second positioning holes 312 are located at both ends of the body 31 along the second direction, so that during the connection between the second side plate and the end plate 2 , pre-positioning is achieved through the second positioning holes 312 of the body 31 and the positioning protrusions of the first side plate 3 .

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A housing for accommodating a battery module, wherein the battery module comprises a plurality of stacked cells, characterized in that: include: end plates, the end plates being two spaced apart along a first direction, at least one of the surfaces of the two end plates facing away from each other having a weight-reducing groove; The first side plates are two spaced apart along the second direction, the two first side plates are connected to the two end plates, at least one of the first side plates has a first weight-reducing hole, and the first direction is perpendicular to the second direction.

2. The housing according to claim 1, characterized in that The first side panel comprises: A body, the body being located at one side of the battery module along the second direction, and the first weight-reducing hole being provided on the body; A bending portion is provided at both ends of the main body along the first direction, and one end of the bending portion away from the main body is bent and extended along the second direction. The two bending portions are respectively located on the side of the two end plates away from each other and are respectively connected to the two end plates.

3. The housing according to claim 2, characterized in that The area opposite to the bending portion on the side of the two end plates facing away from each other is concave to form a recessed portion, the bending portion is arranged in the recessed portion, and the surfaces of the two bending portions away from each other are respectively flush with the surfaces of the two end plates away from each other.

4. The housing according to claim 2 or 3, characterized in that: A reinforcing rib is provided at the connection between the main body and the bending portion.

5. The housing according to claim 4, characterized in that The reinforcing rib protrudes toward the end plate, and the end plate has a first positioning hole that matches the reinforcing rib.

6. The housing according to claim 4, characterized in that The reinforcing ribs are multiple and spaced apart along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

7. The housing according to claim 2, characterized in that A second weight-reducing hole is provided at the connection between the main body and the bending portion.

8. The housing according to claim 2, characterized in that The end plate is provided with an embedded nut, the bent portion is provided with a connecting hole, and the connecting hole and the embedded nut are connected by a fastener.

9. The housing according to claim 1, characterized in that The first weight-reducing holes are arranged in multiple rows and columns, the multiple columns of the first weight-reducing holes are spaced apart in the first direction, the multiple rows of the first weight-reducing holes are spaced apart in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; And / or, the weight-reducing grooves are arranged in multiple rows and columns, the multiple columns of the weight-reducing grooves are spaced apart in the second direction, the multiple rows of the weight-reducing grooves are spaced apart in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

10. The housing according to claim 1, characterized in that Also includes: A second side plate, wherein the second side plates are two spaced apart along a third direction, the two ends of the two side plates along the first direction are respectively connected to the two end plates, the first side plate has second positioning holes at both ends along the third direction, the second side plate has positioning protrusions matching with the second positioning holes at both ends along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

Images