Battery pack shell structure and battery pack

Abstract

The utility model provides a battery pack shell structure and a battery pack. The battery pack shell structure comprises a shell body and a mounting frame arranged on the shell body, wherein a connecting piece is embedded in the shell body, the connecting piece is provided with a protruding part protruding out of the shell body, the mounting frame is provided with a transverse part and a longitudinal part which are arranged at an included angle, and the transverse part is provided with a vehicle body connecting part. A first positioning groove is formed in the longitudinal part, a first connecting hole penetrating through the longitudinal part is formed in the groove bottom of the first positioning groove, the protruding part is inserted into the first positioning groove, and the connecting piece is detachably connected with the longitudinal part through a fastening piece in the first connecting hole. According to the battery pack shell structure disclosed by the utility model, a cavity does not need to be arranged on the shell body, so that the internal space can be enlarged; the first positioning groove is formed, and the connecting piece is provided with the protruding part inserted into the first positioning groove, so that the mounting frame can be quickly positioned on the shell body, and the assembly efficiency of the mounting frame and the shell body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack shell structure. Meanwhile, the utility model also relates to a battery pack having the battery pack shell. Background Art

[0002] As the energy crisis becomes increasingly serious, new energy vehicles are becoming more and more popular among the public. Among them, the battery pack is an important component of new energy vehicles, and its volume and structural design have an important impact on the whole vehicle. Existing battery packs generally have a whole vehicle installation point on their lower shell. The existing technology often requires the design of multiple cavities on the lower shell and the machining of whole vehicle installation holes. This structure wastes the internal space of the battery pack, resulting in a low energy density of the battery pack, and after the excess part is cut off, the exposed cavity needs to be sealed, the process is complicated, the raw material consumption is large, and the cost is high. Utility Model Content

[0003] In view of this, the utility model aims to provide a battery pack shell structure to increase its internal space and improve the assembly efficiency between the shell body and the mounting frame.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A battery pack shell structure comprises a shell body and a mounting frame arranged on the shell body;

[0006] A connecting piece is embedded in the shell body, the connecting piece has a protruding portion protruding from the shell body, the mounting frame has a transverse portion and a longitudinal portion arranged at an angle, and a body connecting portion is provided on the transverse portion;

[0007] A first positioning groove is provided on the side of the longitudinal portion facing the shell body, and a first connecting hole penetrating the longitudinal portion is provided at the bottom of the first positioning groove, the protruding portion is inserted into the first positioning groove, and the connecting piece is detachably connected to the longitudinal portion via a fastener in the first connecting hole.

[0008] Furthermore, the connecting piece is a rivet nut embedded in the shell body.

[0009] Furthermore, a second positioning groove is provided on the transverse portion;

[0010] The vehicle body connecting portion includes a second connecting hole disposed at the bottom of the second positioning groove, and the second connecting hole is disposed through the transverse portion.

[0011] Further, relative to the first positioning groove, a first boss is provided on the other side of the longitudinal portion, and the first connecting hole passes through the first boss; and / or,

[0012] Relative to the second positioning groove, a second boss is provided on the other side of the transverse portion, and the second connecting hole passes through the second boss.

[0013] Furthermore, the mounting frame is formed by integral casting of aluminum alloy, and the transverse portion is connected to the longitudinal portion by bending.

[0014] Furthermore, the mounting frame is in the shape of a letter "7", and a first reinforcing rib is provided on the mounting frame;

[0015] The first reinforcing rib extends from the bottom end of the longitudinal portion to an end of the transverse portion away from the longitudinal portion.

[0016] Furthermore, two opposite sides of the mounting frame are respectively provided with inner flanges;

[0017] The inner flange extends from the bottom end of the longitudinal portion to an end of the transverse portion away from the longitudinal portion.

[0018] Furthermore, the mounting frame is provided with a second reinforcing rib, and the second reinforcing rib is interwoven and connected with the first reinforcing rib;

[0019] Both ends of the second reinforcing rib are respectively connected to the inner flanges of the corresponding ends.

[0020] Furthermore, the mounting frames are provided on two opposite sides of the shell body, and a plurality of the mounting frames are arranged at intervals on each side, and the connecting members are arranged in one-to-one correspondence with the first connecting holes.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The battery pack shell structure described in the utility model, by arranging a mounting frame on the shell body and arranging a vehicle body connecting portion on the mounting frame, does not need to set a cavity on the shell body compared to the prior art, thereby increasing its internal space, which is beneficial to increasing the energy density of the battery pack; at the same time, by arranging a first positioning groove on the longitudinal portion and making the connecting piece have a protruding portion inserted into the first positioning groove, the mounting frame can be quickly positioned on the shell body, which is beneficial to improving the assembly efficiency between the mounting frame and the shell body.

[0023] In addition, the connecting piece is a rivet nut embedded in the shell body, which has a simple structure and is easy to design and implement. By providing a second positioning groove on the transverse part, the connection efficiency between the mounting frame and the vehicle body can be improved. The first boss is provided on the longitudinal part, and the first connecting hole passes through the first boss, which can improve the structural strength at the first connecting hole and help improve the connection strength between the mounting frame and the shell body. The mounting frame is made of aluminum alloy integral casting, which can not only effectively reduce its weight, but also make the mounting frame have a higher structural strength and is also easy to process and manufacture.

[0024] Secondly, by providing a first reinforcing rib on the mounting frame and extending the first reinforcing rib from the bottom end of the longitudinal portion to the end of the transverse portion away from the longitudinal portion, it is beneficial to improve the structural strength of the mounting frame and the installation stability of the battery pack on the vehicle body. By providing inner flanges on two opposite sides of the mounting frame, not only the structural strength of the mounting frame can be further improved, but also the aesthetics of the mounting frame can be improved.

[0025] In addition, a second reinforcing rib connected to the inner flanges at both ends is provided on the mounting frame, and the second reinforcing rib is interwoven with the first reinforcing rib, which can further improve the structural strength of the mounting frame, help improve the connection reliability between the battery pack and the whole vehicle, and improve the safety of the whole pack. By providing multiple mounting frames on both opposite sides of the shell body, the connection reliability between the battery pack and the whole vehicle can be further improved.

[0026] Another object of the present invention is to provide a battery pack, in which the battery pack shell structure as described above is provided.

[0027] The battery pack described in the present invention has the same beneficial effects as the above-mentioned battery pack shell structure relative to the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0029] Figure 1 It is a structural schematic diagram of the battery pack housing structure according to an embodiment of the utility model;

[0030] Figure 2 for Figure 1 A magnified view of part A;

[0031] Figure 3 This is a schematic diagram of the structure of the mounting frame according to an embodiment of the utility model;

[0032] Figure 4It is a schematic structural diagram of the mounting frame described in the embodiment of the utility model from another viewing angle.

[0033] Description of reference numerals:

[0034] 1. Shell body; 2. Mounting frame; 3. Rivet nut; 4. Bolt;

[0035] 2a, longitudinal part; 2b, transverse part; 201, first positioning groove; 202, first connecting hole; 203, second positioning groove; 204, second connecting hole; 205, first reinforcing rib; 206, second reinforcing rib; 207, first boss; 208, second boss; 209, inner flange. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" 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 an indirect connection 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 in combination with specific circumstances.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0040] The present embodiment relates to a battery pack shell structure, including a shell body 1, and a mounting frame 2 arranged on the shell body 1. A connecting piece is embedded in the shell body 1, and the connecting piece has a protruding portion protruding from the shell body 1. The mounting frame 2 has a transverse portion 2b and a longitudinal portion 2a arranged at an angle, and a vehicle body connecting portion is provided on the transverse portion 2b. In addition, a first positioning groove 201 is provided on the side of the longitudinal portion 2a facing the shell body 1, and a first connecting hole 202 penetrating the longitudinal portion 2a is provided at the bottom of the first positioning groove 201, and the protruding portion is inserted into the first positioning groove 201, and the connecting piece is detachably connected to the longitudinal portion 2a through the fastener in the first connecting hole 202.

[0041] The battery pack shell structure of this embodiment, by arranging the mounting frame 2 on the shell body 1 and arranging the body connection part on the mounting frame 2, does not need to be arranged on the shell body 1, compared with the prior art, and can increase its internal space, which is conducive to increasing the energy density of the battery pack. At the same time, by arranging the first positioning groove 201 on the longitudinal part 2a, and making the connecting member have a protruding part inserted into the first positioning groove 201, the mounting frame 2 can be quickly positioned on the shell body 1, which is conducive to improving the assembly efficiency between the mounting frame 2 and the shell body 1.

[0042] An exemplary structure of the battery pack housing structure of this embodiment is shown in FIG. Figures 1 to 4 As shown in , the structure of the housing body 1 can refer to the prior art, which generally includes an upper housing and a lower housing that are connected by snapping, and the mounting frame 2 is specifically arranged on the lower housing. In addition, as a preferred embodiment, as Figure 1 As shown in , mounting brackets 2 are provided on both opposite sides of the housing body 1, and a plurality of mounting brackets 2 are arranged at intervals on each side, and the connecting members are arranged one by one corresponding to the first connecting holes 202. Such an arrangement can further improve the connection reliability between the battery pack and the vehicle.

[0043] Combination Figure 3 and Figure 4 As shown in the figure, as a preferred embodiment, the mounting frame 2 is made of aluminum alloy in one piece, and the transverse portion 2b is connected to the longitudinal portion 2a by bending. This design can not only effectively reduce the weight of the mounting frame 2, but also make the mounting frame 2 have a higher structural strength and is easy to process and manufacture. Of course, in addition to being made of aluminum alloy, the mounting frame 2 can also be made of other materials. Specifically, Figure 3 As shown in the figure, the mounting frame 2 of this embodiment is in a "7" shape, and a first reinforcing rib 205 is provided on the mounting frame 2. Moreover, the first reinforcing rib 205 extends from the bottom end of the longitudinal portion 2a to an end of the transverse portion 2b away from the longitudinal portion 2a.

[0044] By providing the first reinforcing rib 205, it is helpful to improve the structural strength of the mounting frame 2 and to improve the installation stability of the battery pack on the vehicle body. Figure 4 As shown in the figure, the first reinforcing ribs 205 are multiple and are arranged at intervals on the mounting frame 2 to further improve the structural strength of the mounting frame 2. At the same time, it can also better ensure the relative angle between the longitudinal part 2a and the transverse part 2b, thereby ensuring the relative stability between the battery pack and the vehicle body.

[0045] Continue to refer to Figure 3 and Figure 4 As shown in , as a further embodiment, the two opposite sides of the mounting frame 2 are respectively provided with inner flanges 209, and the inner flanges 209 extend from the bottom end of the longitudinal portion 2a to the end of the transverse portion 2b away from the longitudinal portion 2a. In this embodiment, by providing the inner flanges 209 on the two opposite sides of the mounting frame 2, not only the structural strength of the mounting frame 2 can be further improved, but also the first reinforcing ribs 205 can be shielded, thereby improving the aesthetics of the mounting frame 2. In addition, as a further embodiment, the mounting frame 2 is provided with a second reinforcing rib 206, which is interwoven with the first reinforcing rib 205, and the two ends of the second reinforcing rib 206 are respectively connected to the inner flanges 209 at the corresponding ends.

[0046] By providing the second reinforcing ribs 206 connected to the inner flanges 209 at both ends on the mounting frame 2, and interweaving the second reinforcing ribs 206 with the first reinforcing ribs 205, the structural strength of the mounting frame 2 can be further improved, which is beneficial to improving the connection reliability between the battery pack and the whole vehicle, and improving the safety of the whole pack. In addition, in order to further improve the structural strength of the mounting frame 2, a plurality of second reinforcing ribs 206 are arranged at intervals on the mounting frame 2, and the number thereof is not specifically limited here.

[0047] In addition, as a preferred embodiment, Figure 2 As shown in , the connecting piece is a rivet nut 3 embedded in the shell body 1, and one end of the rivet nut 3 is convex relative to the shell body 1 to form the above-mentioned protruding portion. The fastener is specifically a bolt inserted into the first connecting hole 202, so that the mounting bracket 2 can be installed on the shell body 1 by screwing the bolt 4 inserted into the first connecting hole 202 and the rivet nut 3. In addition, as a further embodiment, the first connecting holes 202 of this embodiment are multiple and spaced apart on the longitudinal portion 2a to improve the connection strength between the mounting bracket 2 and the shell body 1. In this embodiment, as Figure 3 As shown in , in order to facilitate the connection between the mounting frame 2 and the vehicle body, as a preferred embodiment, the transverse portion 2b is provided with a second positioning groove 203. The vehicle body connecting portion includes a second connecting hole 204 provided at the bottom of the second positioning groove 203, and the second connecting hole 204 is provided through the transverse portion 2b.

[0048] As a specific embodiment, the second connection holes 204 are two spaced apart. Of course, the number of the second connection holes 204 is not limited to Figure 4 The two shown in can be adjusted accordingly according to design requirements. As a further embodiment, relative to the first positioning groove 201, a first boss 207 is provided on the other side of the longitudinal portion 2a, and the first connecting hole 202 passes through the first boss 207. At the same time, relative to the second positioning groove 203, a second boss 208 is provided on the other side of the transverse portion 2b, and the second connecting hole 204 passes through the second boss 208. Such an arrangement can improve the structural strength at the first connecting hole 202 and the second connecting hole 204, which is beneficial to increase the connection strength between the mounting bracket 2 and the shell body 1, as well as the connection strength between the mounting bracket 2 and the vehicle body, thereby helping to improve the connection reliability between the battery pack and the vehicle body.

[0049] It should be noted that providing the first boss 207 and the second boss 208 at the same time is only a preferred implementation mode, and the first boss 207 or the second boss 208 may not be provided according to design requirements.

[0050] In addition, Figure 4 As shown in , as a preferred embodiment, the first connection holes 202 and the second connection holes 204 are respectively arranged in two corresponding rows, and the first bosses 207 and the second bosses 208 in each row are located on the extension path of the first reinforcing rib 205, so as to further improve the structural strength of the first connection holes 202 and the second connection holes 204. Figure 4 As shown in the figure, each first connection hole 202 and second connection hole 204 is located on the extension path of the second reinforcing rib 206, thereby forming a radial reinforcing rib structure at the first boss 207 and the second boss 208, which can better ensure the structural strength of the first connection hole 202 and the second connection hole 204.

[0051] The battery pack shell structure of this embodiment adopts the above structure, so that the mounting frame 2 and the shell body 1 can have a good assembly efficiency, and there is no need to set a cavity on the shell body 1, which reduces the use of raw materials and achieves the effect of reducing weight and cost. At the same time, it can also increase the internal space of the shell body 1, increase the amount of battery cells filled, increase the energy density of the whole pack, and fundamentally improve the cruising range of the whole vehicle. In addition, the mounting frame 2 is screwed to the rivet nut 3 for easy disassembly and maintenance. At the same time, the mounting frame 2 can have a good structural strength, which can improve the connection reliability between the whole pack and the whole vehicle and improve the safety of the whole pack.

[0052] In addition, the present embodiment also relates to a battery pack, in which the battery pack shell structure as described above is provided.

[0053] The battery pack of this embodiment has the same beneficial effects as the above-mentioned battery pack shell structure relative to the prior art, which will not be described in detail here.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack housing structure, characterized in that: It comprises a shell body and a mounting frame arranged on the shell body; A connecting piece is embedded in the shell body, the connecting piece has a protruding portion protruding from the shell body, the mounting frame has a transverse portion and a longitudinal portion arranged at an angle, and a body connecting portion is provided on the transverse portion; A first positioning groove is provided on the side of the longitudinal portion facing the shell body, and a first connecting hole penetrating the longitudinal portion is provided at the bottom of the first positioning groove, the protruding portion is inserted into the first positioning groove, and the connecting piece is detachably connected to the longitudinal portion via a fastener in the first connecting hole.

2. The battery pack housing structure according to claim 1, characterized in that: The connecting piece is a rivet nut embedded in the shell body.

3. The battery pack housing structure according to claim 1, characterized in that: The transverse portion is provided with a second positioning groove; The vehicle body connecting portion includes a second connecting hole disposed at the bottom of the second positioning groove, and the second connecting hole is disposed through the transverse portion.

4. The battery pack housing structure according to claim 3, characterized in that: Relative to the first positioning groove, a first boss is provided on the other side of the longitudinal portion, and the first connecting hole passes through the first boss; and / or, Relative to the second positioning groove, a second boss is provided on the other side of the transverse portion, and the second connecting hole passes through the second boss.

5. The battery pack housing structure according to claim 1, characterized in that: The mounting frame is formed by integral casting of aluminum alloy, and the transverse portion is connected to the longitudinal portion by bending.

6. The battery pack housing structure according to claim 5, characterized in that: The mounting frame is in a "7" shape, and a first reinforcing rib is provided on the mounting frame; The first reinforcing rib extends from the bottom end of the longitudinal portion to an end of the transverse portion away from the longitudinal portion.

7. The battery pack housing structure according to claim 6, characterized in that: Two opposite sides of the mounting frame are respectively provided with inner flanges; The inner flange extends from the bottom end of the longitudinal portion to an end of the transverse portion away from the longitudinal portion.

8. The battery pack housing structure according to claim 7, characterized in that: The mounting frame is provided with a second reinforcing rib, and the second reinforcing rib is interwoven and connected with the first reinforcing rib; Both ends of the second reinforcing rib are respectively connected to the inner flanges of the corresponding ends.

9. The battery pack housing structure according to any one of claims 1 to 8, characterized in that: The mounting frames are disposed on two opposite sides of the shell body, and a plurality of the mounting frames are disposed at intervals on each side, and the connecting members are disposed in one-to-one correspondence with the first connecting holes.

10. A battery pack, characterized in that: The battery pack is provided with the battery pack shell structure according to any one of claims 1 to 9.

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