Battery system

Abstract

The utility model discloses a battery system which comprises a battery pack, a first skin and a second skin, and the battery pack is provided with a first side surface and a second side surface which are adjacent to each other; the first skin comprises a first panel and first buckles, the first panel is connected with the multiple first buckles, the first panel covers the first side face, and the first buckles are connected with the first side face in a clamped mode; the second skin comprises a second panel and second buckles, the second panel is connected with the multiple second buckles, the second panel covers the second side face, and the second buckles are connected with the second side face in a clamped mode. Compared with the prior art, the first panel is provided with the first buckle, the second panel is provided with the second buckle, the first panel and the second panel are fixedly connected with the battery pack through the clamping effect of the first buckle and the second buckle, the number of bolts for fixing can be effectively reduced, and regular disassembly and assembly are facilitated; the first buckle and the second buckle are located in the first panel and the second panel, and the surfaces of the first panel and the second panel are flat and smooth.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and in particular to a battery system. Background Technology

[0002] With the continuous growth of the number of new energy vehicles, the electrification of commercial vehicles is also in full swing. The electrification of commercial vehicles can reduce carbon emissions and lower operating costs, resulting in good environmental and economic benefits.

[0003] Currently, when the battery system of a heavy-duty tractor is installed on the vehicle body, a skin is required on the outer surface of the battery system. The purpose of the skin is to provide a uniform appearance, protect the battery pack, and insulate the battery pack. Existing battery system skins are made by bending thin plates and attaching them directly to the battery frame. This leaves many screw heads on the outer surface, and the unevenness of the surface after the thin plates are attached is very obvious, which seriously affects the appearance of the vehicle. The large number of protruding screws also affects the design of the appearance. In addition, the battery system requires regular disassembly and maintenance, and the large number of screws makes disassembly and assembly inconvenient. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a battery system that can enhance the skin's resistance to deformation and reduce the number of bolts required for installation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A battery system includes a battery pack, a first skin, and a second skin. The battery pack has adjacent first and second sides. The first skin includes a first panel and a first buckle. The first panel is connected to a plurality of first buckles. The first panel covers the first side, and the first buckles engage with the first side. The second skin includes a second panel and a second buckle. The second panel is connected to a plurality of second buckles. The second panel covers the second side, and the second buckles engage with the second side.

[0007] In one embodiment, the first skin includes a first skeleton, a plurality of the first skeletons are spaced apart on the first panel along their width direction, and a plurality of the first buckles are connected to the first skeletons along their length direction.

[0008] The second skin includes a second skeleton, a plurality of the second skeletons are spaced apart on the second panel along their width direction, and a plurality of the second buckles are connected to the second skeletons along their length direction.

[0009] In one embodiment, a clearance hole is provided on the first side, and the first buckle is engaged with the clearance hole; a locking block is connected to the second side, and the second buckle is engaged with the locking block.

[0010] In one embodiment, the first panel includes a first main body and a first edge, with the first edge connected to opposite ends of the first main body. The second panel includes a second main body and a second edge, with the second edge connected to opposite ends of the second main body. The first edge and the second edge are connected.

[0011] In one embodiment, the second edge portion is bent toward the second main body portion to form a folded edge, and the first edge portion and the folded edge are attached and connected.

[0012] Alternatively, the first edge portion is bent toward the first body portion to form a folded edge, and the second edge portion and the folded edge are attached and connected.

[0013] In one embodiment, the first edge portion has a first fixing hole, the second edge portion has a second fixing hole, and the battery system includes a fixing member, wherein the first fixing hole and the second fixing hole are fixed together by the fixing member.

[0014] In one embodiment, the first skin includes a first insulation layer disposed between the first panel and the battery pack, and the second skin includes a second insulation layer disposed between the second panel and the battery pack.

[0015] In one embodiment, the first panel is provided with a third fixing hole, the first insulation layer is provided with a first clearance groove, the first clearance groove and the third fixing hole are arranged opposite to each other, and the third fixing hole is connected to the battery pack through a fastener.

[0016] The second panel has a fourth fixing hole, and the second insulation layer has a second clearance groove. The second clearance groove and the fourth fixing hole are arranged opposite to each other, and the fourth fixing hole is connected to the battery pack through a fastener.

[0017] In one embodiment, the third fixing hole is located at the top and / or bottom of the first panel, and the fourth fixing hole is located at the top and / or bottom of the second panel.

[0018] In one embodiment, the first buckle and the second buckle have the same structure, both including a horizontal part and a vertical part. The horizontal part is connected to the first panel or the second panel, and the vertical part is connected to the side of the horizontal part near the battery pack. The vertical part is bent toward the side of the horizontal part.

[0019] The beneficial effects of this utility model are as follows: This application provides a battery system including a battery pack, a first skin, and a second skin. The battery pack has adjacent first and second sides. The first skin includes a first panel and a first buckle. The first panel is connected to a plurality of first buckles, and the first panel covers the first side, with the first buckles engaging with the first side. The second skin includes a second panel and a second buckle. The second panel is connected to a plurality of second buckles, and the second panel covers the second side, with the second buckles engaging with the second side. Compared with the prior art, the first panel of this application is provided with a first buckle, and the second panel is provided with a second buckle. Through the engaging action of the first and second buckles, the first and second panels are fixedly connected to the battery pack, which can effectively reduce the number of bolts used for fixing and facilitate periodic disassembly and assembly. Moreover, the first and second buckles are both located inside the first and second panels, that is, on the side facing the battery pack. From the outside, the surfaces of the first and second panels are not uneven, and the surfaces are smooth and flat, which is beneficial to the appearance design and aesthetics. Attached Figure Description

[0020] Figure 1 A schematic diagram of the battery system of this utility model is shown;

[0021] Figure 2 An exploded view of the structure of the second skin of this utility model is shown;

[0022] Figure 3 It shows Figure 1 Enlarged view of point A in the middle;

[0023] Figure 4 It shows Figure 1 Enlarged view of point B in the middle;

[0024] Figure 5 A schematic diagram of the first skeleton of this utility model is shown;

[0025] Figure 6 A cross-sectional schematic diagram of the battery system of this utility model is shown;

[0026] Figure 7 It shows Figure 6 Enlarged view of point D in the middle;

[0027] Figure 8 This diagram shows a cross-sectional view of the battery system of this invention from another direction.

[0028] Figure 9 It shows Figure 8 Enlarged view of point C in the middle;

[0029] Reference numerals: 1. First skin; 11. First panel; 12. First buckle; 13. First frame; 14. First insulation layer; 111. First main body; 112. First edge; 113. First fixing hole; 114. Third fixing hole; 141. First clearance groove;

[0030] 2. Second skin; 21. Second panel; 22. Second buckle; 23. Second frame; 24. Second insulation layer; 211. Second main body; 212. Second edge; 213. Second fixing hole; 214. Fourth fixing hole; 241. Second clearance groove;

[0031] 3. Battery pack; 31. First side; 32. Second side; 311. Clearance hole; 321. Snap-fit ​​block. Detailed Implementation

[0032] In this utility model, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or constituent parts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] See Figure 1 This application provides a battery system including a battery pack 3, a first skin 1, and a second skin 2. The battery pack 3 has adjacent first side 31 and second side 32. The first skin 1 includes a first panel 11 and a first buckle 12. The first panel 11 is connected to a plurality of first buckles 12. The first panel 11 covers the first side 31, and the first buckles 12 and the first side 31 are engaged. The second skin 2 includes a second panel 21 and a second buckle 22. The second panel 21 is connected to a plurality of second buckles 22. The second panel 21 covers the second side 32, and the second buckles 22 and the second side 32 are engaged.

[0038] In practical applications, the battery pack 3 is typically rectangular, generally having a top surface, a bottom surface, and four sides. The first side 31 and the second side 32 usually refer to two adjacent sides of the battery pack 3. The battery pack 3 has two opposing first side 31s and two opposing second side 32s. Therefore, the first skin 1 and the second skin 2 are also provided as two. The side of the first panel 11 facing the first side 31 is connected to multiple first buckles 12, which engage with the first side 31, allowing the first panel 11 to be fixedly covered on the first side 31. At the same time, the side of the second panel 21 facing the second side 32 is connected to multiple second buckles 22, which engage with the second side 32, allowing the second panel 21 to be fixedly covered on the second side 32.

[0039] Compared to existing technologies, the first panel 11 of this application is provided with a first buckle 12, and the second panel 21 is provided with a second buckle 22. Through the snapping action of the first buckle 12 and the second buckle 22, the first panel 11 and the second panel 21 are fixedly connected to the battery pack 3, which can effectively reduce the number of bolts used for fixing and facilitate periodic disassembly and assembly. Moreover, the first buckle 12 and the second buckle 22 are both located inside the first panel 11 and the second panel 21, that is, on the side facing the battery pack 3. From the outside, the surfaces of the first panel 11 and the second panel 21 do not have unevenness, and the surfaces are flat and smooth, which is beneficial to the appearance design and aesthetics.

[0040] See Figure 2 and Figure 3The first skin 1 includes a first skeleton 13, and a plurality of first skeletons 13 are spaced apart on the first panel 11 along their width direction. A plurality of first buckles 12 are connected to the first skeletons 13 along their length direction. The second skin 2 includes a second skeleton 23, and a plurality of second skeletons 23 are spaced apart on the second panel 21 along their width direction. A plurality of second buckles 22 are connected to the second skeletons 23 along their length direction.

[0041] In practical applications, the length of the first frame 13 can be approximately the same as the length of the first panel 11, and the length of the second frame 23 can be approximately the same as the length of the second panel 21. Multiple first frames 13 are connected to the first panel 11 along the width direction of the first frame 13, and multiple second frames 23 are connected to the second panel 21 along the width direction of the second frame 23. This arrangement improves the structural strength of the first panel 11 and the second panel 21, enhances deformation control of the first panel 11 and the second panel 21, and prevents deformation caused by external impacts, thus avoiding damage to the battery pack 3. Simultaneously, multiple first clips 12 are connected to the first frame 13 along its length, and multiple second clips 22 are connected to the second frame 23 along its length. The first frame 13 and the second frame 23 provide mounting positions for the first clips 12 and the second clips 22, which improves the structural strength of the first frame 13 and the second frame 23 themselves, and makes the installation of the first clips 12 and the second clips 22 more convenient.

[0042] It is understandable that the first frame 13 and the first buckle 12 can be made into an integral bending structure, and the second frame 23 and the second buckle 22 can also be made into an integral bending structure, thus forming a structure with strong integrity and no splicing marks. The first frame 13 and the first panel 11 can be fixed by welding, and the second frame 23 and the second panel 21 can also be fixed by welding, resulting in high connection stability, simple operation, and reduced use of bolts and other connecting parts.

[0043] It should be noted that integrated bending structure usually refers to a manufacturing technology that uses a continuous process to bend sheet metal or profiles into a specific shape in one go.

[0044] See Figure 4 The first side 31 has a clearance hole 311, and the first buckle 12 is engaged with the clearance hole 311; the second side 32 is connected with a locking block 321, and the second buckle 22 is engaged with the locking block 321.

[0045] In practical applications, to facilitate the connection between the first buckle 12 and the second buckle 22, both the first side 31 and the second side 32 of the battery pack 3 need to provide connection points. The first side 31 can have a clearance hole 311, such as... Figure 6 and Figure 7As shown, the first buckle 12 extends into the clearance hole 311 and engages with the hole wall of the clearance hole 311, thereby fixing the first buckle 12 and the battery pack 3; at the same time, the second side 32 can be connected to the snap-fit ​​block 321, such as... Figure 8 and Figure 9 As shown, the second buckle 22 and the snap-fit ​​block 321 snap together to fix the second buckle 22 and the battery pack 3.

[0046] See Figure 5 The first buckle 12 and the second buckle 22 have the same structure, both including a horizontal part and a vertical part. The horizontal part is connected to the first panel 11 or the second panel 21, and the vertical part is connected to the side of the horizontal part near the battery pack 3. The vertical part is bent towards the side of the horizontal part.

[0047] In practical applications, the horizontal part of the first buckle 12 can be connected to the first frame 13. The horizontal part extends towards the battery pack 3, and the side of the horizontal part near the battery pack 3 is connected to the vertical part. The vertical part is bent towards the horizontal part to form a buckle. The vertical part can extend into the relief hole 311 and abut against the hole wall of the relief hole 311. This makes it impossible for the first buckle 12 to detach from the relief hole 311, thus achieving a fixed connection between the first panel 11 and the first side 31. Similarly, the horizontal part of the second buckle 22 is connected to the second frame 23, and the vertical part of the second buckle 22 is engaged with the snap-fit ​​block 321, thus achieving a fixed connection between the second panel 21 and the second side 32.

[0048] See again Figure 2 and Figure 3 The first panel 11 includes a first main body portion 111 and a first edge portion 112. The first edge portion 112 is connected to the opposite ends of the first main body portion 111. The second panel 21 includes a second main body portion 211 and a second edge portion 212. The second edge portion 212 is connected to the opposite ends of the second main body portion 211. The first edge portion 112 and the second edge portion 212 are connected.

[0049] In practical applications, in order to enhance the connection stability of the first panel 11 and the second panel 21, the first panel 11 is provided with a first edge portion 112 at its opposite ends, and the second panel 21 is provided with a second edge portion 212 at its opposite ends. The first edge portion 112 and the second edge portion 212 are connected to each other and are simultaneously fixed to the battery pack 3. This arrangement can increase the structural strength of the first edge portion 112 and the second edge portion 212 and avoid unstable side connection.

[0050] See again Figure 2 The second edge portion 212 is bent toward the second main body portion 211 to form a folded edge, and the first edge portion 112 and the folded edge are attached and connected; or, the first edge portion 112 is bent toward the first main body portion 111 to form a folded edge, and the second edge portion 212 and the folded edge are attached and connected.

[0051] In practical applications, the second edge 212 can be bent to one side to form a folded edge, which can fit exactly with the first edge 112 at the position of the first side 31. At this time, bolts or other connecting parts can be used to fix the first edge 112, the second edge 212 and the battery pack 3 together at the same time, saving the number of bolts used and strengthening the structural strength of the side, thus realizing the fixed connection of the first edge 112 and the second edge 212.

[0052] It is understood that in other embodiments, the first edge portion 112 can be bent to form a folded edge, and the folded edge and the second edge portion 212 can be fitted together at the position of the second side surface 32, which can also achieve a similar effect.

[0053] See again Figure 2 and Figure 3 The first edge portion 112 has a first fixing hole 113, and the second edge portion 212 has a second fixing hole 213. The battery system includes a fixing member, and the first fixing hole 113 and the second fixing hole 213 are fixed together by the fixing member.

[0054] In practical applications, fasteners can be made of bolts or similar structures. When the first edge portion 112 and the second edge portion 212 are fitted together, the first fixing hole 113 and the second fixing hole 213 are exactly opposite each other. The bolts are passed through the first fixing hole 113 and the second fixing hole 213 in sequence and fixedly connected to the battery pack 3. Only a single bolt is needed to fix the first edge portion 112 and the second edge portion 212 at the same time, which effectively saves the number of bolts used and reduces the phenomenon of protrusion on the skin surface.

[0055] See again Figure 2 and Figure 3 The first skin 1 includes a first insulation layer 14, which is disposed between the first panel 11 and the battery pack 3. The second skin 2 includes a second insulation layer 24, which is disposed between the second panel 21 and the battery pack 3.

[0056] In practical applications, the skin, as the outer protective layer of the battery pack 3, not only provides physical protection and structural support, but also needs to provide thermal insulation. In low-temperature environments, the skin can reduce heat loss and improve the low-temperature performance of the battery pack 3. Based on this, this application provides a first thermal insulation layer 14 on the inner side of the first panel 11 (the side closer to the battery pack 3), and a second thermal insulation layer 24 on the inner side of the second panel 21 (the side closer to the battery pack 3). The first thermal insulation layer 14 and the second thermal insulation layer 24 serve to insulate the battery pack 3 and prevent its performance from deteriorating in low-temperature environments.

[0057] It is understandable that the first insulation layer 14 and the second insulation layer 24 can be made of materials such as foam cotton or insulation paint.

[0058] See again Figure 2 and Figure 3 The first panel 11 has a third fixing hole 114, and the first insulation layer 14 has a first clearance groove 141. The first clearance groove 141 and the third fixing hole 114 are arranged opposite to each other. The third fixing hole 114 is connected to the battery pack 3 through a fastener. The second panel 21 has a fourth fixing hole 214, and the second insulation layer 24 has a second clearance groove 241. The second clearance groove 241 and the fourth fixing hole 214 are arranged opposite to each other. The fourth fixing hole 214 is connected to the battery pack 3 through a fastener.

[0059] In practical applications, since the first buckle 12 and the second buckle 22 are usually located on the main body of the first panel 11 and the second panel 21, and the sides of the first panel 11 and the second panel 21 also need to be fixed to the battery pack 3, the sides of the first panel 11 and the second panel 21 can be directly fixed to the battery pack 3 using bolts or other fasteners. This arrangement is convenient for installation and uses fewer bolts. At the same time, in order to make the first panel 11 and the second panel 21 more tightly fixed to the battery pack 3, the first insulation layer 14 has a first clearance groove 141, and the second insulation layer 24 has a second clearance groove 241. The first clearance groove 141 is used to avoid fasteners passing through the third fixing hole 114, and the second clearance groove 241 is used to avoid fasteners passing through the fourth fixing hole 214, which helps to prevent the insulation layer from affecting the strength of the bolt fixing.

[0060] See again Figure 2 and Figure 3 The third fixing hole 114 is located at the top and / or bottom of the first panel 11, and the fourth fixing hole 214 is located at the top and / or bottom of the second panel 21.

[0061] In practical applications, the first buckle 12 and the second buckle 22 fix the main body of the first panel 11 and the second panel 21 to the battery pack 3. The first edge portion 112 and the second edge portion 212 fix the sides of the first panel 11 and the second panel 21. Therefore, the third fixing hole 114 can be set at the top and bottom of the first panel 11, and the fourth fixing hole 214 can be set at the top and bottom of the second panel 21 to fix the top and bottom of the first panel 11 and the second panel 21. This helps to enhance the fixing strength between the first skin 1 and the second skin 2 and the battery pack 3 and prevent the skin from falling off.

[0062] Unlike existing technologies, this application provides a battery system including a battery pack 3, a first skin 1, and a second skin 2. The battery pack 3 has adjacent first side 31 and second side 32. The first skin 1 includes a first panel 11 and a first buckle 12. The first panel 11 is connected to a plurality of first buckles 12. The first panel 11 covers the first side 31, and the first buckles 12 and the first side 31 are engaged. The second skin 2 includes a second panel 21 and a second buckle 22. The second panel 21 is connected to a plurality of second buckles 22. The second panel 21 covers the second side 32, and the second buckles 22 and the second side 32 are engaged. Compared to existing technologies, the first panel 11 of this application is provided with a first buckle 12, and the second panel 21 is provided with a second buckle 22. Through the snapping action of the first buckle 12 and the second buckle 22, the first panel 11 and the second panel 21 are fixedly connected to the battery pack 3, which can effectively reduce the number of bolts used for fixing and facilitate periodic disassembly and assembly. Moreover, the first buckle 12 and the second buckle 22 are both located inside the first panel 11 and the second panel 21, that is, on the side facing the battery pack 3. From the outside, the surfaces of the first panel 11 and the second panel 21 do not have unevenness, and the surfaces are flat and smooth, which is beneficial to the appearance design and aesthetics.

[0063] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A battery system, characterized in that, include A battery pack having adjacent first and second sides; The first skin includes a first panel and a first buckle. The first panel is connected to a plurality of first buckles. The first panel covers the first side, and the first buckles are engaged with the first side. The second skin includes a second panel and a second buckle. The second panel is connected to a plurality of second buckles. The second panel covers the second side and the second buckles engage with the second side.

2. The battery system according to claim 1, characterized in that, The first skin includes a first skeleton, a plurality of the first skeletons are spaced apart on the first panel along their width direction, and a plurality of the first buckles are connected to the first skeletons along their length direction. The second skin includes a second skeleton, a plurality of the second skeletons are spaced apart on the second panel along their width direction, and a plurality of the second buckles are connected to the second skeletons along their length direction.

3. The battery system according to claim 1, characterized in that, The first side has a clearance hole, and the first buckle engages with the clearance hole; the second side is connected to a locking block, and the second buckle engages with the locking block.

4. The battery system according to claim 1, characterized in that, The first panel includes a first main body and a first edge, with the first edge connected to the opposite ends of the first main body. The second panel includes a second main body and a second edge, with the second edge connected to the opposite ends of the second main body. The first edge and the second edge are connected.

5. The battery system according to claim 4, characterized in that, The second edge portion bends toward the second main body portion to form a folded edge, and the first edge portion and the folded edge are attached and connected; Alternatively, the first edge portion is bent toward the first body portion to form a folded edge, and the second edge portion and the folded edge are attached and connected.

6. The battery system according to claim 4, characterized in that, The first edge portion has a first fixing hole, and the second edge portion has a second fixing hole. The battery system includes a fixing member, and the first fixing hole and the second fixing hole are fixed together by the fixing member.

7. The battery system according to any one of claims 1 to 6, characterized in that, The first skin includes a first insulation layer disposed between the first panel and the battery pack, and the second skin includes a second insulation layer disposed between the second panel and the battery pack.

8. The battery system according to claim 7, characterized in that, The first panel has a third fixing hole, the first insulation layer has a first clearance groove, the first clearance groove and the third fixing hole are arranged opposite to each other, and the third fixing hole is connected to the battery pack through a fastener; The second panel has a fourth fixing hole, and the second insulation layer has a second clearance groove. The second clearance groove and the fourth fixing hole are arranged opposite to each other, and the fourth fixing hole is connected to the battery pack through a fastener.

9. The battery system according to claim 8, characterized in that, The third fixing hole is located at the top and / or bottom of the first panel, and the fourth fixing hole is located at the top and / or bottom of the second panel.

10. The battery system according to claim 1, characterized in that, The first and second buckles have the same structure, both including a horizontal part and a vertical part. The horizontal part is connected to the first panel or the second panel, and the vertical part is connected to the side of the horizontal part near the battery pack. The vertical part is bent toward the side of the horizontal part.

Images