Wiring structure, battery pack tray, battery pack and vehicle

Abstract

The utility model discloses a wiring structure, a battery pack tray, a battery pack and a vehicle. The wiring structure comprises a longitudinal beam, the longitudinal beam is arranged on the battery pack tray in the front-back direction of the vehicle, a wiring cavity is formed in the longitudinal beam, and the wiring cavity is arranged in the length direction of the longitudinal beam and used for laying wires; the two ends of the longitudinal beam in the length direction are used for wires to enter and exit the wiring cavity. According to the utility model, the section bar with two communicated ends is adopted as the longitudinal beam, and the wiring cavity is arranged in the longitudinal beam and is used for laying wires, so that the structural strength is higher, the extrusion resistance and the impact resistance are better, and the safety of the battery pack structure is obviously improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of batteries, and more specifically to a wiring structure, a battery pack tray, a battery pack and a vehicle. Background Art

[0002] The existing electric vehicle power battery pack electrical connection wiring scheme mainly opens a receiving groove on the beam and uses a "mountain"-shaped bracket to insulate and separate the copper busbar. This technical solution saves space for copper busbar arrangement, but because the structure needs to be opened at the upper end of the beam, the structural strength of the beam is reduced. When thermal runaway occurs, the beam is unable to resist the expansion force of the battery cell and the risk of failure increases.

[0003] Therefore, it is necessary to provide a wiring structure, a battery pack tray, a battery pack and a vehicle to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the first aspect of the present invention provides a wiring structure, comprising:

[0006] A longitudinal beam, the longitudinal beam being arranged on the battery pack tray along the front-rear direction of the vehicle, the longitudinal beam having a wiring cavity formed inside thereof, the wiring cavity being arranged along the length direction of the longitudinal beam for laying wires;

[0007] The two ends of the longitudinal beam in the length direction are used for the wires to enter and exit the wiring cavity.

[0008] Optionally, the wiring structure further includes:

[0009] An insulating protective shell module is arranged inside the wiring cavity, and the insulating protective shell module is used for insulating and protecting the wires.

[0010] Optionally, the wiring cavity comprises:

[0011] A rib plate connecting two opposite side walls of the wiring cavity;

[0012] A first cavity, wherein the first cavity is disposed on a first side of the rib plate, and the insulating protective shell module is disposed in the first cavity;

[0013] A second cavity is disposed on a second side of the rib plate.

[0014] Optionally, the insulating protective shell module includes:

[0015] a first insulating protective shell;

[0016] A second insulating protective shell;

[0017] The first insulating protection shell and the second insulating protection shell are overlapped along the height direction of the longitudinal beam to form an insulating protection cavity.

[0018] Optionally, the wiring structure further includes:

[0019] A wire harness clamp module is arranged in the insulating protection cavity, and the wire harness clamp module includes a plurality of limiting grooves, and the limiting grooves are used to fix the wires.

[0020] Optionally, the harness clamp module comprises:

[0021] First harness clamp;

[0022] The second wire harness clamp is configured by clamping the first wire harness clamp and the second wire harness clamp together to clamp and fix the wire.

[0023] Optionally, the second wiring harness clamp is connected and fixed to the bottom of the first insulating protective shell or the top of the second insulating protective shell, a snap hole is provided at the bottom of the first insulating protective shell or the top of the second insulating protective shell, and the second wiring harness clamp is correspondingly provided with a snap protrusion, and the snap protrusion is connected and fixed to the snap hole.

[0024] Optionally, the wiring structure further includes:

[0025] A longitudinal beam insert is arranged on the top of the longitudinal beam and is used to connect other components.

[0026] Optionally, a side wall of the insulating protective shell module is provided with a bayonet, and the insulating protective shell module is limited in position in the wiring cavity by the bayonet.

[0027] Optionally, the side wall of the wiring cavity is provided with a guide protrusion, and the side wall of the insulating protection shell module is correspondingly provided with a guide groove, the insulating protection shell module is inserted into the wiring cavity, and the guide protrusion is inserted into the guide groove.

[0028] A third aspect of the present invention provides a battery pack tray, comprising a wiring structure described in any one of the above technical solutions.

[0029] Optionally, the battery pack tray further includes:

[0030] A frame, the frame comprising:

[0031] A first end beam, the first end beam being arranged on a first side of the frame along a left-right direction of the vehicle;

[0032] a second end beam, the second end beam being arranged on a third side of the frame along the left-right direction of the vehicle,

[0033] A first side beam, wherein the first side beam is arranged at a second side of the frame along a front-rear direction of the vehicle, a first end of the first side beam is connected and fixed to the first end beam, and a second end of the first side beam is connected and fixed to the second end beam;

[0034] A second side beam, wherein the second side beam is arranged on a fourth side of the frame along the front-rear direction of the vehicle, a first end of the second side beam is connected and fixed to the first end beam, and a second end of the second side beam is connected and fixed to the second end beam.

[0035] Optionally, the longitudinal beam is arranged inside the frame along the front-rear direction of the vehicle, and the first end of the longitudinal beam is connected and fixed to the first end beam.

[0036] Optionally, the battery pack tray further includes:

[0037] A middle cross beam is arranged inside the frame along the left-right direction of the vehicle, and the second end of the longitudinal beam is connected and fixed to the middle cross beam.

[0038] Optionally, the middle cross beam is provided with a mounting groove corresponding to the longitudinal beam, and the second end of the longitudinal beam is connected to the mounting groove and is fixedly connected to the middle cross beam.

[0039] Optionally, a middle crossbeam insert is provided at the top of the mounting groove, and the middle crossbeam insert covers the notch of the mounting groove.

[0040] Optionally, the battery pack tray further includes:

[0041] a first rear longitudinal beam, the first rear longitudinal beam being arranged inside the frame along the front-rear direction of the vehicle, a first end of the first rear longitudinal beam being connected and fixed to the middle cross beam, and a second end of the first rear longitudinal beam being connected and fixed to the second end beam;

[0042] a second rear longitudinal beam, the second rear longitudinal beam being arranged inside the frame along the front-rear direction of the vehicle, the first end of the second rear longitudinal beam being connected and fixed to the middle cross beam, and the second end of the second rear longitudinal beam being connected and fixed to the second end beam;

[0043] The space between the first rear longitudinal beam and the second rear longitudinal beam constitutes a power distribution installation area, and the second end of the longitudinal beam is connected to the power distribution installation area, so that the wire can enter the power distribution installation area.

[0044] A third aspect of the present invention provides a battery pack, comprising a battery pack tray according to any one of the above technical solutions.

[0045] A fourth aspect of the present invention provides a vehicle, comprising a battery pack according to any one of the above technical solutions.

[0046] According to a wiring structure and vehicle of the utility model, the wiring structure uses a profile with two ends connected as a longitudinal beam, and a wiring cavity is provided inside the longitudinal beam for laying wires, which can improve the structural strength of the longitudinal beam and realize smoke isolation and heat isolation between the power distribution installation area, high and low voltage wiring harnesses and battery modules. Compared with the existing technology, the upper end open beam structure has higher strength, better anti-extrusion and anti-impact capabilities, and significantly improves the safety of the battery pack structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0048] Figure 1 It is a three-dimensional diagram of a battery pack tray according to a preferred embodiment of the utility model;

[0049] Figure 2 for Figure 1 A partial enlarged view of the

[0050] Figure 3 An exploded view of a battery pack tray according to a preferred embodiment of the present utility model;

[0051] Figure 4 A three-dimensional diagram of a longitudinal beam according to a preferred embodiment of the utility model;

[0052] Figure 5 is an exploded view of a wire harness clamp according to a preferred embodiment of the utility model;

[0053] Figure 6 A transverse cross-sectional view of a longitudinal beam according to a preferred embodiment of the utility model;

[0054] Figure 7 for Figure 5 A partial enlarged view of the

[0055] Figure 8 It is a longitudinal cross-sectional view of a longitudinal beam according to a preferred embodiment of the utility model.

[0056] Description of reference numerals:

[0057] 1: Battery pack tray 2: Stringer

[0058] 3: First side beam 4: Middle cross beam

[0059] 5: Bottom guard plate 6: First rear longitudinal beam

[0060] 7: Second end beam 8: Second rear longitudinal beam

[0061] 9: Second side beam 10: First end beam

[0062] 11: Middle crossbeam insert 12: Connecting channel

[0063] 13: High voltage wiring harness 14: Low voltage wiring harness

[0064] 15: Port protection plate 16: Welding surface

[0065] 17: Nut 18: Insulation protection shell module

[0066] 19: longitudinal beam insert 20: first insulating protective shell

[0067] 21: First harness clamp 22: Second harness clamp

[0068] 23: Second insulating protective shell 24: Second cavity

[0069] 25: Guide protrusion 26: First cavity

[0070] 27: Bayonet 28: Harness clamp module

[0071] 29: snap hole 30: wiring cavity

[0072] 31: Rib plate 32: Snap-on protrusion

[0073] 33: Guide groove 34: Insulation protection cavity DETAILED DESCRIPTION

[0074] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0075] In order to thoroughly understand the utility model, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the utility model thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the utility model are described in detail below, but in addition to these detailed descriptions, the utility model may also have other embodiments.

[0076] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0077] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in the present invention are for illustrative purposes only and are not restrictive.

[0078] The utility model discloses a wiring structure, a battery pack tray, a battery pack and a vehicle.

[0079] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

[0080] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in a preferred embodiment, a wiring structure includes: a longitudinal beam 2; the longitudinal beam 2 is arranged on the battery pack tray 1 along the front-rear direction of the vehicle;

[0081] A wiring cavity 30 is formed inside the longitudinal beam 2. The wiring cavity 30 is arranged along the length direction of the longitudinal beam 2 for laying wires. There may be multiple wires, for example, a high-voltage wire harness 13 and a low-voltage wire harness 14.

[0082] The wiring cavity 30 is a side-wall closed cavity, and both ends of the longitudinal beam 2 in the length direction are used for wires to enter and exit the wiring cavity 30 .

[0083] The longitudinal beam 2 can be made of metal materials such as stainless steel or aluminum alloy, and is manufactured using a profile extrusion molding process. During the manufacturing process, the side walls of the longitudinal beam 2 are integrated without any gaps, and the wiring cavity 30 is a side wall closed cavity.

[0084] The wiring structure in this embodiment uses a closed cross-section profile with two ends connected as a longitudinal beam, and a wiring cavity is provided inside the longitudinal beam for laying wires, which can improve the structural strength of the longitudinal beam and achieve smoke isolation and thermal isolation between the power distribution installation area, high and low voltage harnesses and battery modules. Compared with the existing technology, the upper end open beam structure has higher strength, better anti-extrusion and anti-impact capabilities, and significantly improves the safety of the battery pack structure.

[0085] In one embodiment, if Figure 2 , Figure 4 As shown, the wiring structure also includes:

[0086] The insulating protection shell module 18 is disposed inside the wiring cavity 30 and is used for insulating and protecting the wires.

[0087] The insulating protective shell module 18 is provided to protect the wires and prevent them from rubbing against the inside of the metal longitudinal beam 2. The insulating protective shell module 18 is usually made of plastic by injection molding or vacuum forming, which has low cost, good insulation, and can be processed into a complex structure. The insulating protective shell module 18 isolates the high-voltage wire harness 13 and the low-voltage wire harness 14 from the inner wall of the metal longitudinal beam 2 to prevent the wire harness from shaking and rubbing against the metal inner wall of the longitudinal beam 2 during driving, causing the outer skin to be damaged, thereby generating the risk of leakage or arcing.

[0088] In one embodiment, if Figure 4 , Figure 6 As shown, the wiring cavity 30 includes:

[0089] A rib plate 31, the rib plate 31 connects two opposite side walls of the wiring cavity 30;

[0090] A first cavity 26 , the first cavity 26 is disposed on a first side of the rib plate 31 , and the insulating protective shell module 18 is disposed in the first cavity 26 ;

[0091] The second cavity 24 is disposed on the second side of the rib plate 31 .

[0092] The ribs 31 can be made integrally with the side walls of the longitudinal beam 2. By providing the ribs 31, the strength of the longitudinal beam 2 can be improved. The number of ribs 31 can also be changed, for example, more than two ribs 31 can be provided. The internal space of the longitudinal beam 2 can be flexibly arranged by changing the position and number of the ribs 31 in the wiring cavity 30. In addition, when it is necessary to withstand greater expansion forces, increasing the number of ribs 31 inside the wiring cavity 30 can further improve the strength of the longitudinal beam 2. At the same time, the enclosed space outside the wiring harness can also be considered to be designed as an exhaust channel during thermal runaway. For example, the second cavity 24 can be used for the exhaust channel during thermal runaway, and can also be used to set a coolant pipe, which is connected to the power distribution integrated module in the power distribution installation area to provide coolant for the power distribution integrated module.

[0093] In one embodiment, if Figure 4 , Figure 5 As shown, the insulating protective shell module 18 includes:

[0094] A first insulating protective shell 20, which is disposed in the wiring cavity 30;

[0095] A second insulating protective shell 23, which is disposed in the wiring cavity 30;

[0096] The first insulating protection shell 20 and the second insulating protection shell 23 are overlapped and arranged along the height direction of the longitudinal beam 2 to form an insulating protection cavity 34 .

[0097] By setting the insulating protective shell module 18 as a split structure, it is convenient to set the wires and the wiring harness clamp module 28 inside the insulating protective shell module 18. When the insulating protective shell module 18 is installed into the wiring cavity 30, the first insulating protective shell 20 and the second insulating protective shell 23 can also be installed into the wiring cavity 30 in different orders, so that the first insulating protective shell 20 and the second insulating protective shell 23 are stacked and combined in the wiring cavity 30.

[0098] In one embodiment, if Figure 6 , Figure 7 As shown, the wiring structure also includes:

[0099] The harness clamp module 28 is disposed in the insulating protection cavity 34 , that is, between the first insulating protection shell 20 and the second insulating protection shell 23 . The harness clamp module 28 includes a plurality of limiting grooves, which are used to fix the wires.

[0100] By setting the harness clamp module 28, the harness clamp module 28 fixes the high and low voltage harnesses inside the insulating protective shell module 18, which facilitates the installation of the high and low voltage harnesses and can be installed synchronously with the insulating protective shell module 18 into the wiring cavity 30.

[0101] In one embodiment, if Figure 6 , Figure 7 As shown, the harness clamp module 28 includes:

[0102] A first harness clamp 21;

[0103] The second harness clamp 22 is a combination of the first harness clamp 21 and the second harness clamp 22, so as to clamp and fix the wires and limit the position of each harness, thereby preventing the harnesses from moving and interfering with each other during the operation of the vehicle.

[0104] By setting the harness clamp module 28 as a split structure, it is convenient to set the wire inside the harness clamp module 28. The first harness clamp 21 is provided with a plurality of limit grooves, and the second harness clamp 22 is also provided with a plurality of limit grooves, and a wire can be fixed in each limit groove. The wire can be clamped with the limit groove, and the wire can be clamped and installed in the limit groove, so that the wire can be temporarily fixed. The high-voltage harness 13 can be fixed in the limit groove of the first harness clamp 21, and the low-voltage harness 14 can be fixed in the limit groove of the second harness clamp 22.

[0105] In one embodiment, if Figure 6 , Figure 7 , Figure 8 As shown, the second wiring harness clamp 22 is connected and fixed to the bottom of the first insulating protective shell 20 or the top of the second insulating protective shell 23, and a snap hole 29 is provided at the bottom of the first insulating protective shell 20 or the top of the second insulating protective shell 23. The second wiring harness clamp 22 is correspondingly provided with a snap protrusion 32, and the snap protrusion 32 is connected and fixed to the snap hole 29.

[0106] The clamping protrusion 32 in the figure is provided with an elastic arm structure. The clamping protrusion 32 is inserted into the clamping hole 29 by squeezing the elastic arm structure, and the clamping protrusion 32 can be connected and fixed with the clamping hole 29 by releasing the elastic arm structure, which is convenient for installation, and the clamping protrusion 32 will not be easily detached from the clamping hole 29, ensuring that the wiring harness clamp module 28 can be stably fixed inside the insulating protective shell module 18.

[0107] In one embodiment, the upper and lower surfaces of the metal longitudinal beam 2 can be thickened so that a glue groove or bolting structure can be added. In the battery pack tray 1, the glue groove or bolting structure can enhance the connection strength between the longitudinal beam 2 and the bottom plate or top cover of the battery pack tray 1. Figure 6 As shown in 8, the wiring structure also includes:

[0108] The longitudinal beam insert 19 is arranged on the top of the longitudinal beam 2 and is used to connect other components. The metal longitudinal beam insert 19 is welded by slotting the top of the metal longitudinal beam 2, and a threaded structure is processed on the metal longitudinal beam insert 19 to cooperate with the nut 17 to achieve bolting.

[0109] The top of the longitudinal beam 2 has a relatively large thickness, and a groove may be provided on the top of the longitudinal beam 2 to provide a channel for the cross-connection of the wiring harness or copper busbar between the battery modules.

[0110] In one embodiment, if Figure 5As shown in FIG8 , the side wall of the insulating protective shell module 18 is provided with a bayonet 27, and the insulating protective shell module 18 is limited in position in the wiring cavity 30 by the bayonet 27. The side wall of the wiring cavity 30 may be provided with a corresponding inwardly protruding tenon. When the bayonet 27 is engaged with the tenon during the process of inserting the insulating protective shell module 18 into the wiring cavity 30, the insulating protective shell module 18 is inserted into the predetermined position, and the insulating protective shell module 18 does not need to be moved anymore.

[0111] In one embodiment, if Figure 5 As shown in FIG6 , the side wall of the wiring cavity 30 is provided with a guide protrusion 25 , and the side wall of the insulating protection shell module 18 is correspondingly provided with a guide groove 33 . The insulating protection shell module 18 is inserted into the wiring cavity 30 , and the guide protrusion 25 is inserted into the guide groove 33 .

[0112] The side walls of the first insulating protective shell 20 and the second insulating protective shell 23 are both provided with guide grooves 33, and the side walls of the wiring cavity 30 are correspondingly provided with two sets of upper and lower guide protrusions 25. When the insulating protective shell module 18 is inserted into the wiring cavity 30, the guide protrusions 25 are inserted into the guide grooves 33, and the first insulating protective shell 20 and the second insulating protective shell 23 can move along the guide protrusions 25.

[0113] By providing the guide protrusion 25 and the guide groove 33 , the first insulating protective shell 20 and the second insulating protective shell 23 can be limited so that the first insulating protective shell 20 and the second insulating protective shell 23 maintain a relative combined position in the wiring cavity 30 .

[0114] When installing the wiring structure, the second insulating protective shell 23 can be fixed by a tool, and the second wiring harness clamp 22 can be pressed into the buckle hole 29 on the second insulating protective shell 23 through its own buckle structure to complete the installation with the second insulating protective shell 23. After installing five high-voltage wire harnesses 13 on the second wiring harness clamp 22, it is inverted with the first wiring harness clamp 21, and the low-voltage wire harness 14 on the second wiring harness clamp 22 and the three high-voltage wire harnesses 13 in the limit groove above the first wiring harness clamp 21 are installed by the tool. Then, the combination of the wiring harness clamp module is completed by buckling at both ends of the second wiring harness clamp 22, and finally, the installed protective shell and the wiring harness clamp are pushed into the wiring cavity 30 after being placed upright. The wiring harness installation in this scheme can be completed from top to bottom by a robotic arm, which can be automated and greatly improve assembly efficiency. When replacing the wiring harness, you only need to pull out the insulating protective shell module 18 as a whole from the port connecting the longitudinal beam 2 to the periphery of the battery pack to replace the wiring harness, and the wiring harness maintenance in the longitudinal beam 2 is more convenient.

[0115] like Figure 1 , Figure 3 As shown, an embodiment of the utility model further provides a battery pack tray 1, comprising the wiring structure described in any one of the above embodiments.

[0116] The battery pack tray 1 includes a top cover, a frame and a bottom plate. The frame is located at the edge of the battery pack tray 1 and can be designed as a rectangle or other suitable shape. The frame is combined with the bottom plate and the top cover to form the main structure of the battery pack tray 1.

[0117] On the one hand, the base plate supports the battery cell module, and on the other hand, it can constitute a cooling mechanism for the battery cell module.

[0118] The top cover covers the battery cell installation area and the power distribution installation area. After the power distribution integrated module and the battery cell module are assembled in the battery pack tray 1, the top cover is assembled to complete the sealing of the battery pack.

[0119] In one embodiment, if Figure 1 , Figure 3 As shown, the border includes:

[0120] A first end beam 10, the first end beam 10 is arranged at a first side of the frame along the left-right direction of the vehicle;

[0121] The second end beam 7 is arranged on the third side of the frame along the left-right direction of the vehicle.

[0122] A first side beam 3, the first side beam 3 is arranged at the second side of the frame along the front-rear direction of the vehicle, a first end of the first side beam 3 is connected and fixed to the first end beam 10, and a second end of the first side beam 3 is connected and fixed to the second end beam 7;

[0123] The second side beam 9 is arranged at the fourth side of the frame along the front-rear direction of the vehicle, the first end of the second side beam 9 is connected and fixed to the first end beam 10, and the second end of the second side beam 9 is connected and fixed to the second end beam 7.

[0124] The first end beam 10, the first side beam 3, the second end beam 7, and the second side beam 9 are connected end to end to form a rectangular frame, which forms the main load-bearing structure of the battery pack tray 1, can strengthen the external strength of the battery pack tray 1, and improve the impact resistance of the battery pack tray 1.

[0125] In one embodiment, the longitudinal beam 2 is disposed inside the frame along the front-rear direction of the vehicle, and the first end of the longitudinal beam 2 is connected and fixed to the first end beam 10 .

[0126] In one embodiment, the battery pack tray 1 further includes:

[0127] The middle cross beam 4 is arranged inside the frame along the left-right direction of the vehicle and at the second end of the longitudinal beam 2. The second end of the longitudinal beam 2 is connected and fixed to the middle cross beam 4, and can be specifically fixed by welding.

[0128] The two ends of the middle cross beam 4 can be respectively connected and fixed to the first side beam 3 and the second side beam 9 by welding.

[0129] A connector can be provided on the first end beam 10, and the wiring harness is connected from the power distribution installation area to the connector of the first end beam 10 through the wiring cavity 30 inside the longitudinal beam 2, which saves space for wiring harness arrangement and improves the space utilization rate in the battery pack. The longitudinal beam 2 is connected to the second end beam 7 and the first end beam 10 by welding, which provides sealing and thermal isolation for the wiring harness, and improves the safety of the power distribution installation area when the battery module is thermally runaway.

[0130] In one embodiment, if Figure 1 , Figure 2 As shown, the middle cross beam 4 is provided with a mounting groove corresponding to the longitudinal beam 2, and the second end of the longitudinal beam 2 is connected to the mounting groove and fixed to the middle cross beam 4, which can be fixed by welding. Figure 2 The welding surface 16 shown is the welding position. The welding surface 16 is located on the inner side of the power distribution installation area, which can ensure the connection strength between the longitudinal beam 2 and the middle cross beam 4 and the sealing of the connection.

[0131] The end of the longitudinal beam 2 can be arranged in the installation groove, or a little length can be exposed from the installation groove.

[0132] In one embodiment, if Figure 1 , Figure 2 As shown, a middle cross beam insert 11 is arranged at the top of the installation groove, and the middle cross beam insert 11 covers the notch of the installation groove. The middle cross beam insert 11 and the middle cross beam 4 and the longitudinal beam 2 can be welded and fixed.

[0133] When the vehicle is hit from the side, the side impact force is transmitted along the direction of the middle cross beam 4. The middle cross beam insert 11 in the middle of the middle cross beam 4 and the metal longitudinal beam 2 can play a supporting role as rigid materials, which greatly reduces the risk of bending of the middle part of the middle cross beam 4 during a side collision, and realizes that the metal longitudinal beam 2 and the power distribution installation area are connected through the middle cross beam 4 without causing significant damage to the structural strength of the middle cross beam 4. It should be noted that the connection channel 12 below the middle cross beam insert 11 can be used for the connection wires between the battery module and the power distribution installation area to pass through, and the blocking device provided in the connection channel 12 can achieve smoke isolation between the battery module and the power distribution installation area.

[0134] Alternatively, if Figure 1 , Figure 3 As shown, the battery pack tray 1 also includes:

[0135] A first rear longitudinal beam 6, which is arranged inside the frame along the front-rear direction of the vehicle, wherein a first end of the first rear longitudinal beam 6 is connected and fixed to the middle cross beam 4, and a second end of the first rear longitudinal beam 6 is connected and fixed to the second end beam 7, and can be connected and fixed by welding;

[0136] A second rear longitudinal beam 8 is arranged inside the frame along the front-rear direction of the vehicle, a first end of the second rear longitudinal beam 8 is connected and fixed to the middle cross beam 4, and a second end of the second rear longitudinal beam 8 is connected and fixed to the second end beam 7, and can be connected and fixed by welding;

[0137] The space between the first rear longitudinal beam 6 and the second rear longitudinal beam 8 constitutes a power distribution installation area, and the second end of the longitudinal beam 2 is connected to the power distribution installation area, so that the wire can enter the power distribution installation area.

[0138] The power distribution installation area is used to accommodate the power distribution integrated module. The power distribution integrated module can integrate but is not limited to the battery control module, electronic control module, compressor control module and power module, thereby improving the integration of the battery pack. The high integration can realize multi-module integrated control, facilitate the installation and use of the power distribution integrated module, and achieve cost reduction and weight reduction of the vehicle.

[0139] An embodiment of the utility model further provides a battery pack, comprising the battery pack tray 1 described in any one of the above embodiments.

[0140] Figure 1 Only the battery pack tray 1 is shown in the figure, and the battery pack also includes components such as a power distribution integrated module and a battery cell module, which are not shown in the figure.

[0141] An embodiment of the utility model further provides a vehicle, comprising the battery pack described in any one of the above embodiments.

[0142] The utility model provides a wiring structure, a battery pack tray, a battery pack and a vehicle, which have the following characteristics:

[0143] 1. The extruded longitudinal beam forms a closed cavity structure inside, which is stronger than the open beam structure at the upper end, has better anti-extrusion and anti-impact capabilities, and the battery pack structure is safer.

[0144] 2. The metal longitudinal beam cavity completely wraps the wiring harness, avoiding direct contact between the insulation structure and the module. In the event of thermal runaway, it can effectively prevent the fire from spreading to the wiring harness and isolate the smoke.

[0145] 3. The longitudinal beam can be connected to the power distribution installation area by welding, which is effective in flame retardancy and has better air tightness, and can prevent the electrolyte gas from entering the power distribution installation area and causing arcing during thermal runaway.

[0146] 4. The spatial layout of the profile can be made more flexible by changing the position of the rib plate structure. The use of insulating protective shells and harness clamps can not only arrange copper busbars, but also arrange high and low voltage harnesses.

[0147] 5. The wiring harness arrangement by the insulating protective shell and wiring harness clamp designed in this application can isolate the high and low voltage wiring harnesses. It can also effectively avoid the risk of high voltage wiring harnesses moving during vehicle driving and friction with the inner wall of the metal longitudinal beam, leading to insulation failure.

[0148] 6. The longitudinal beam cavity can add rib structure according to the usage scenario to improve the structural strength.

[0149] 7. The upper and lower surfaces of the longitudinal beam can be thickened so that it can add fasteners such as glue grooves or bolts to strengthen the connection with the base plate, top cover, etc.

[0150] 8. It is more convenient to replace the wiring harness in the longitudinal beam. Since the closed metal beam cannot install the wiring harness from top to bottom, this solution puts the wiring harness into the wiring harness clamp in advance and then fixes the wiring harness clamp in the insulating protective shell. When installing, the protective shell is pushed into the profile cavity to complete the installation. When replacing the wiring harness, you only need to pull out the protective shell as a whole from the port where the longitudinal beam connects to the outer periphery of the battery pack to replace the wiring harness.

[0151] 9. The split insulating protective shell and split wiring harness clamp designed in this application can realize the automation of the installation of the insulating protective shell, wiring harness clamp, high and low voltage wiring harnesses, thereby improving work efficiency.

[0152] 10. The split insulating protective shell and the harness clamp can be processed by extrusion and injection molding respectively. The process is mature and the processing cost is low.

[0153] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0154] In understanding the scope of the present invention, the term "comprising" and its derivatives as used herein are intended to be open terms, which specify the existence of the recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "including", "having" and their derivatives.

[0155] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0156] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0157] The utility model has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model.

Claims

1. A wiring structure, characterized in that: include: A longitudinal beam (2), the longitudinal beam (2) being arranged on the battery pack tray (1) along the front-rear direction of the vehicle, a wiring cavity (30) being formed inside the longitudinal beam (2), the wiring cavity (30) being arranged along the length direction of the longitudinal beam (2) for laying wires; Both ends of the longitudinal beam (2) in the length direction are used for the wires to enter and exit the wiring cavity (30).

2. The wiring structure according to claim 1, characterized in that: Also includes: An insulating protective shell module (18), wherein the insulating protective shell module (18) is arranged inside the wiring cavity (30), and the insulating protective shell module (18) is used to insulate and protect the wires.

3. The wiring structure according to claim 2, characterized in that: The wiring cavity (30) comprises: A rib plate (31), the rib plate (31) connecting two opposite side walls of the wiring cavity (30); A first mold cavity (26), the first mold cavity (26) being arranged on a first side of the rib plate (31), and the insulating protective shell module (18) being arranged in the first mold cavity (26); A second cavity (24), wherein the second cavity (24) is arranged on a second side of the rib plate (31).

4. The wiring structure according to claim 2, characterized in that: The insulating protective shell module (18) comprises: A first insulating protective shell (20); A second insulating protective shell (23); The first insulating protective shell (20) and the second insulating protective shell (23) are stacked and arranged along the height direction of the longitudinal beam (2) to form an insulating protective cavity (34).

5. The wiring structure according to claim 4, characterized in that: Also includes: A wire harness clamp module (28), the wire harness clamp module (28) being arranged in the insulating protection cavity (34), the wire harness clamp module (28) comprising a plurality of limiting grooves, the limiting grooves being used to fix the wires.

6. The wiring structure according to claim 5, characterized in that: The harness clamp module (28) comprises: A first harness clamp (21); The second wire harness clamp (22) is configured such that the first wire harness clamp (21) and the second wire harness clamp (22) are clamped and assembled to clamp and fix the wire.

7. The wiring structure according to claim 6, characterized in that: The second wiring harness clamp (22) is connected and fixed to the bottom of the first insulating protective shell (20) or the top of the second insulating protective shell (23); a snap hole (29) is provided at the bottom of the first insulating protective shell (20) or the top of the second insulating protective shell (23); the second wiring harness clamp (22) is correspondingly provided with a snap protrusion (32); the snap protrusion (32) is connected and fixed to the snap hole (29).

8. The wiring structure according to claim 7, characterized in that: Also includes: A longitudinal beam insert (19), wherein the longitudinal beam insert (19) is arranged on the top of the longitudinal beam (2).

9. The wiring structure according to claim 2, characterized in that: The side wall of the insulating protective shell module (18) is provided with a bayonet (27), and the insulating protective shell module (18) is limited in position in the wiring cavity (30) by means of the bayonet (27).

10. The wiring structure according to claim 9, characterized in that: The side wall of the wiring cavity (30) is provided with a guide protrusion (25), and the side wall of the insulating protection shell module (18) is correspondingly provided with a guide groove (33); the insulating protection shell module (18) is inserted into the wiring cavity (30), and the guide protrusion (25) is inserted into the guide groove (33).

11. A battery pack tray, characterized in that: Comprising the wiring structure according to any one of claims 1-10.

12. The battery pack tray according to claim 11, characterized in that: Also includes: A frame, the frame comprising: A first end beam (10), the first end beam (10) being arranged on a first side of the frame along the left-right direction of the vehicle; a second end beam (7), the second end beam (7) being arranged on a third side of the frame along the left-right direction of the vehicle, A first side beam (3), the first side beam (3) being arranged on a second side of the frame along the front-rear direction of the vehicle, the first end of the first side beam (3) being connected and fixed to the first end beam (10), and the second end of the first side beam (3) being connected and fixed to the second end beam (7); A second side beam (9), the second side beam (9) being arranged on a fourth side of the frame along the front-rear direction of the vehicle, the first end of the second side beam (9) being connected and fixed to the first end beam (10), and the second end of the second side beam (9) being connected and fixed to the second end beam (7).

13. The battery pack tray according to claim 12, characterized in that: The longitudinal beam (2) is arranged inside the frame along the front-rear direction of the vehicle, and the first end of the longitudinal beam (2) is connected and fixed to the first end beam (10).

14. The battery pack tray according to claim 12, characterized in that: Also includes: An intermediate cross beam (4) is arranged inside the frame along the left-right direction of the vehicle, and the second end of the longitudinal beam (2) is connected and fixed to the intermediate cross beam (4).

15. The battery pack tray according to claim 14, characterized in that: The middle cross beam (4) is provided with a mounting groove corresponding to the longitudinal beam (2), and the second end of the longitudinal beam (2) is connected to the mounting groove and is connected and fixed to the middle cross beam (4).

16. The battery pack tray according to claim 15, characterized in that: An intermediate crossbeam insert (11) is provided at the top of the installation groove, and the intermediate crossbeam insert (11) covers the notch of the installation groove.

17. The battery pack tray according to claim 14, characterized in that: Also includes: a first rear longitudinal beam (6), the first rear longitudinal beam (6) being arranged inside the frame along the front-rear direction of the vehicle, the first end of the first rear longitudinal beam (6) being connected and fixed to the middle cross beam (4), and the second end of the first rear longitudinal beam (6) being connected and fixed to the second end beam (7); a second rear longitudinal beam (8), the second rear longitudinal beam (8) being arranged inside the frame along the front-rear direction of the vehicle, the first end of the second rear longitudinal beam (8) being connected and fixed to the middle cross beam (4), and the second end of the second rear longitudinal beam (8) being connected and fixed to the second end beam (7); The space between the first rear longitudinal beam (6) and the second rear longitudinal beam (8) constitutes a power distribution installation area, and the second end of the longitudinal beam (2) is connected to the power distribution installation area so that the wire can enter the power distribution installation area.

18. A battery pack, characterized in that: Comprising a battery pack tray (1) according to any one of claims 11-17.

19. A vehicle, characterized in that: Comprising a battery pack according to claim 18.

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