Insulation connecting piece, middle beam assembly, battery pack and vehicle

Abstract

The invention provides an insulation connecting piece, an intermediate beam assembly, a battery pack and a vehicle, and the insulation connecting piece of the battery pack is used for connecting an intermediate beam and comprises a plate part which extends along a first direction; the head portion is connected with the end portion, in the second direction, of the plate portion, the head portion protrudes out of the plate portion in the third direction, the plate portion and the head portion are both made of insulation materials, and the first direction, the second direction and the third direction are perpendicular to one another. After the insulation connecting piece and the middle beam are installed, the plate portion wraps the side portion of the middle beam, and the head portion wraps the top of the middle beam, so that complete isolation between the middle beam and the battery is achieved, after thermal runaway eruption of the battery occurs, eruption objects can fall on the head portion instead of directly falling on the cross beam, and the risks of arc discharge and heat spreading cannot be caused; therefore, the safety performance of the battery pack is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to an insulating connector, an intermediate beam assembly, a battery pack and a vehicle. Background Art

[0002] The battery pack is an important component of new energy vehicles and has very high requirements for safety. The battery pack box usually uses a beam to isolate the battery pack and electrical components. Since the beam also serves to strengthen the box, the material of the beam is metal. In order to prevent the battery from short-circuiting due to contact with the metal beam, the prior art usually uses an end plate to isolate the battery pack and the metal beam. However, when the battery thermally runs away and erupts, the eruption material can easily pass over the end plate and erupt onto the metal beam. Therefore, the end plate has limited isolation effect on the battery and the metal beam, and there is still a large safety hazard. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the end plate of the battery pack cannot isolate the battery group and the metal beam, posing a major safety hazard, thereby providing an insulating connector, an intermediate beam assembly, a battery pack and a vehicle.

[0004] In order to solve the above problems, the present invention provides an insulating connector for a battery pack, which is used to connect the middle beam, including: a plate portion, extending along a first direction; a head portion, connected to the end of the plate portion along a second direction, and the head portion protrudes from the plate portion in a third direction, wherein the plate portion and the head portion are both made of insulating material, and the first direction, the second direction and the third direction are perpendicular to each other.

[0005] Optionally, a accommodating cavity is provided in the head, and reinforcing ribs are provided in the accommodating cavity, and two sides of the reinforcing ribs are connected to the inner wall of the accommodating cavity; wherein the reinforcing ribs extend along the second direction; or, the reinforcing ribs extend along the third direction; or, the reinforcing ribs are arranged obliquely.

[0006] Optionally, at least one connecting portion is provided on the plate portion and / or the head portion, and the connecting portion is used to be connected to the middle beam.

[0007] Optionally, the connecting portion includes a connecting protrusion, and a bending plate is provided on a side of the connecting protrusion along the first direction.

[0008] Optionally, the insulating connector further includes an output pole structure and a connection bar, and both the output pole structure and the connection bar are arranged on the head.

[0009] Optionally, a first accommodating recess is provided on the head, the first accommodating recess passes through the surface of the head away from the plate portion along the second direction and the surface of the head away from the plate portion along the third direction, and the output pole structure is provided in the first accommodating recess.

[0010] Optionally, two output pole structures are provided, and the two output pole structures are respectively located on two sides of the head along the first direction.

[0011] Optionally, a second accommodating recess is also provided on the head, the second accommodating recess passes through the surface of the head away from the plate portion along the second direction and the surface of the head away from the plate portion along the third direction, and the connecting row is provided in the second accommodating recess.

[0012] Optionally, the connecting bar is arranged between two output pole structures.

[0013] The present invention provides an intermediate beam assembly of a battery pack, comprising: a beam body extending along a first direction, the beam body having two first surfaces relatively distributed along a second direction, and two second surfaces distributed along a third direction; an insulating connector, the insulating connector being the above-mentioned insulating connector, the plate portion cooperating with the second surface, and the head portion cooperating with the first surface.

[0014] Optionally, the beam body and the insulating connector are detachably connected; or, the beam body and the insulating connector are integrally formed.

[0015] Optionally, along the second direction, a connection protrusion is provided on the surface of the head portion facing the plate portion, and a connection groove is provided on one surface of the beam body, and the connection protrusion is inserted into the connection groove.

[0016] The present invention also provides a battery pack, comprising: a box body, including a bottom plate and an intermediate beam assembly arranged on the bottom plate, the intermediate beam assembly is the above-mentioned intermediate beam assembly, and the box body has a accommodating space; a battery pack is arranged in the accommodating space.

[0017] Optionally, the middle beam assembly is arranged in the box along the first direction, and the middle beam assembly divides the accommodating space into a battery compartment and an electrical compartment. The battery pack is arranged in the battery compartment, and one end of the battery pack abuts against the surface of the plate and the head facing away from the electrical compartment.

[0018] The present invention also provides a vehicle, comprising the above-mentioned battery pack.

[0019] The present invention has the following advantages:

[0020] Utilizing the technical solution of the present invention, the insulating connector includes a plate portion and a head portion, both of which are made of insulating material. After the insulating connector is installed with the middle beam, the plate portion covers the side of the middle beam, and the head portion covers the top of the middle beam, thereby achieving complete isolation between the middle beam and the battery. After the battery erupts due to thermal runaway, the erupted material will fall on the head portion instead of directly on the middle beam, which will not cause arcing and heat spread risks, thereby improving the safety performance of the battery pack. Therefore, the technical solution of the present invention solves the defect in the prior art that the end plate of the battery pack cannot isolate the battery pack and the metal beam, which poses a major safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of the insulating connector of the present invention is shown;

[0023] Figure 2 Shows Figure 1 a schematic side view of an insulating connector;

[0024] Figure 3 Shows Figure 1 A schematic diagram of a first form of reinforcement ribs for a medium insulating connector;

[0025] Figure 4 Shows Figure 1 A schematic diagram of a second form of the reinforcing rib of the insulating connector;

[0026] Figure 5 Shows Figure 1 A schematic diagram of one of the output pole structures of the insulating connector;

[0027] Figure 6 Shows Figure 1 A schematic diagram of the structure of the connection row of the middle insulating connector;

[0028] Figure 7 Shows Figure 1 A schematic diagram of the structure of the connecting row of the insulating connecting piece;

[0029] Figure 8 Shows Figure 1 A schematic diagram of another output pole structure of the middle insulating connector;

[0030] Fig. 9 A schematic structural diagram of the intermediate beam assembly of the present invention is shown;

[0031] Fig.10 Shows Fig. 9 Exploded schematic diagram of the middle beam assembly;

[0032] Fig.11 Shows Fig. 9 Cross-sectional view of the middle beam assembly (assembly diagram);

[0033] Fig.12 A schematic diagram showing the structure of the battery pack of the present invention is shown;

[0034] Fig.13 Shows Fig.12 A schematic diagram of the structure of the box of the battery pack;

[0035] Fig.14 Shows Fig.13 Schematic diagram of the exploded box.

[0036] Description of reference numerals:

[0037] 10. Plate portion; 20. Head portion; 21. Accommodation cavity; 22. First accommodation recess; 23. Second accommodation recess; 30. Reinforcement rib; 40. Connection portion; 41. Connection protrusion; 42. Bending plate; 50. Output pole structure; 60. Connection row; 100. Beam body; 101. First surface; 102. Second surface; 103. Connection groove; 200. Insulating connector; 300. Box body; 301. Bottom plate; 400. Intermediate beam assembly; 500. Accommodation space; 501. Battery compartment; 502. Electrical compartment; 600. Battery pack. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] like Figure 1 and Figure 2 As shown, an embodiment of the insulating connector of the battery pack of the present application is used to connect the middle beam. And the insulating connector includes a plate portion 10 and a head portion 20. Among them, the plate portion 10 extends along a first direction. The head portion 20 is connected to the end of the plate portion 10 along the second direction, and the head portion 20 protrudes from the plate portion 10 in the third direction. Furthermore, the plate portion 10 and the head portion 20 are both made of insulating material, and the first direction, the second direction and the third direction are perpendicular to each other.

[0043] Using the technical solution of this embodiment, the insulating connector includes a plate portion 10 and a head portion 20, both of which are made of insulating materials. After the insulating connector is installed with the middle beam, the plate portion 10 covers the side of the middle beam, and the head portion 20 covers the top of the middle beam, thereby achieving complete isolation between the middle beam and the battery. After the battery erupts due to thermal runaway, the eruption material will fall on the head portion instead of directly on the middle beam, which will not cause arcing and heat spread risks, thereby improving the safety performance of the battery pack. Therefore, the technical solution of this embodiment solves the defect that the end plate of the battery pack in the prior art cannot isolate the battery pack and the metal beam, which poses a major safety hazard.

[0044] It should be noted that, in order to facilitate the description of the positional relationship between the various structures, the first direction, the second direction and the third direction are defined in this embodiment, and the three directions are perpendicular to each other. Furthermore, the first direction is the width (left and right) direction of the vehicle, the second direction is the height direction of the vehicle, and the third direction is the length (front and back) direction of the vehicle. However, the insulating connector in this embodiment can be placed in any posture, and the specific directions of the first direction, the second direction and the third direction can be adjusted accordingly.

[0045] like Figure 1 and Figure 2 As shown, the insulating connector in this embodiment is used to separate the battery pack and the middle beam, and the middle beam can be a cross beam or a longitudinal beam. The insulating connector mainly includes two parts, a plate portion 10 and a head portion 20. Both are made of insulating materials and have a certain structural strength. For example, both can be made of plastic materials.

[0046] from Figure 1 and Figure 2 It can be seen that the plate portion 10 is a thin plate component, and further, the plate portion 10 is a long strip structure, which extends along the first direction and has a long side and a wide side. After the insulating connector is assembled on the middle beam, the plate portion 10 cooperates with the side of the middle beam.

[0047] Furthermore, in this embodiment, the plate portion 10 can be directly used as the end plate structure in the prior art, that is, the end plate in the battery pack can be eliminated. And because the plate portion 10 is close to the side of the middle beam, the thickness of the plate portion 10 can be set thinner, thereby reducing the space occupied by the plate portion in the battery pack and increasing the energy density of the battery pack.

[0048] Optionally, the thickness of the plate portion 10 is less than or equal to 4 mm.

[0049] from Figure 1 and Figure 2 It can be seen that the head 20 is a structure protruding from the surface of the plate portion 10. The head 20 is arranged at the end of the plate portion 10 along the second direction. Figure 1 In the direction shown, the head 20 is disposed at the upper end of the plate portion 10. The head 20 protrudes from the surface of the plate portion 10 along the third direction. Figure 1 In the direction shown, the head 20 protrudes from the side surface of the plate portion 10. After the insulating connector is assembled on the middle beam, the head 20 is matched with the top of the middle beam.

[0050] It can be seen that after the insulating connector is assembled on the middle beam, it can be completely isolated from the battery pack from the side and top of the middle beam. After the thermal runaway eruption of the battery cell, it will not cause the risk of arcing and heat spread, thereby improving the safety performance of the battery pack.

[0051] Optionally, the cross section of the head 20 in this embodiment is a square structure. Figure 2 It can be seen that the lower surface of the head 20 and the right side surface of the plate portion 10 form an "L"-shaped structure, which is adapted to the shape of the middle beam, making the connection between the insulating connector and the middle beam more stable and the fit more tightly.

[0052] In some embodiments not shown, the cross-section of the head 20 may also be other shapes, which can be adjusted by those skilled in the art according to actual needs.

[0053] from Figure 1 It can be seen that the head 20 is also a long strip structure, and along the first direction, two ends of the head 20 extend to two ends of the plate portion 10 .

[0054] In some embodiments not shown, along the first direction, the two ends of the head 20 may not extend to the two ends of the plate 10. As for the length of the head 20, those skilled in the art may adjust the adaptability according to actual needs.

[0055] like Figure 3As shown, in the technical solution of this embodiment, a receiving cavity 21 is provided in the head 20, and a reinforcing rib 30 is provided in the receiving cavity 21, and both sides of the reinforcing rib 30 are connected to the inner wall of the receiving cavity 21. The receiving cavity 21 forms a hollow structure in the head 20, thereby reducing the weight of the head 20. The reinforcing rib 30 can strengthen the structure of the head 20, on the one hand, it can enable the head 20 to suppress the expansion of the battery cell; on the other hand, the receiving cavity 21 allows the head 20 to have a certain deformation space, and can also prevent the head 20 from excessively suppressing the deformation of the battery cell, thereby ensuring that the battery cell is in a better working state.

[0056] Furthermore, the above-mentioned “the two sides of the reinforcing rib 30 are connected to the inner wall of the accommodating cavity 21” means that Figure 3 It can be seen that after taking a cross section of the insulating connector in the plane where the second direction and the third direction are located, both sides of the reinforcing rib 30 are connected to the inner wall of the accommodating cavity 21 in the cross section.

[0057] Furthermore, along the first direction, the reinforcing rib 30 may also be a long strip structure.

[0058] Optionally, along the first direction, the head 20 may be provided with the accommodating cavity 21 at all positions, or only a certain section or several sections of the head 20 may be provided with the accommodating cavity 21 .

[0059] Optionally, along the first direction, the reinforcing rib 30 may extend to the entire accommodating cavity 21 , or may extend to only a portion of the accommodating cavity 21 .

[0060] Furthermore, after taking a cross section of the insulating connector on the plane where the second direction and the third direction are located, the extension direction of the reinforcing rib 30 on the cross section can be as follows:

[0061] The first type is that the reinforcing rib 30 extends along the second direction (not shown in the figure), that is, the reinforcing rib 30 extends along the Figure 3 The direction shown extends in an upward and downward direction.

[0062] The second type is, Figure 3 As shown, the reinforcing rib 30 extends along the third direction, that is, the reinforcing rib 30 extends along the Figure 3 The direction shown extends left to right.

[0063] The third type is, Figure 4 As shown, the reinforcing rib 30 is arranged obliquely. Figure 4 There are two reinforcing ribs 30, and the cross-sectional shape of the two reinforcing ribs 30 is "X"-shaped.

[0064] Of course, the arrangement of the reinforcing rib 30 is not limited to Figure 3 and Figure 4As shown in the content, those skilled in the art can adjust the arrangement of the reinforcing ribs 30 according to actual needs, including the number of reinforcing ribs, distribution method, cross-sectional shape, etc., as long as the structure of the head 20 can be strengthened.

[0065] like Figure 1 As shown, in the technical solution of this embodiment, at least one connecting portion 40 is provided on the plate portion 10 and / or the head portion 20, and the connecting portion 40 is used to be connected to the middle beam.

[0066] Specifically, the connecting portion 40 can realize a detachable connection between the insulating connector and the middle beam, and the insulating connector and the middle beam form an assembly, thereby simplifying the assembly process.

[0067] In this embodiment, the connection portion 40 is disposed on the head portion 20. In some embodiments not shown, the connection portion 40 may also be disposed on the plate portion 10, or the plate portion 10 and the head portion 20 may both be provided with the connection portion 40.

[0068] In this embodiment, the connecting portion 40 is disposed on the surface of the head portion 20 facing the plate portion 10, that is, Figure 2 In the direction shown, a connection portion 40 is provided on the lower surface of the head 20. Therefore, the insulating connector and the middle beam are assembled in the following manner: along the second direction, the insulating connector is moved toward the middle beam for assembly.

[0069] In some embodiments not shown, the connecting portion 40 may also be disposed at other positions of the head 20 .

[0070] like Figure 5 , Figure 6 and Figure 8 As shown, in the technical solution of this embodiment, the connecting portion 40 includes a connecting protrusion 41. Specifically, the connecting protrusion 41 is arranged on the surface of the head portion 20 facing the plate portion 10, and the connecting protrusion 41 protrudes downward. A connecting groove 103 is correspondingly arranged on the middle beam. During assembly, the connecting protrusion 41 on the insulating connector is inserted into the connecting groove 103 to achieve the fixation of the two. When the connecting protrusion 41 and the middle beam need to be disassembled, the connecting protrusion 41 can be pulled out of the connecting groove 103. The above structure simplifies the installation and disassembly process of the insulating connector and the middle beam, and can optimize the assembly process.

[0071] Optionally, in this embodiment, three connection protrusions 41 are provided, and the three connection protrusions 41 are arranged at intervals along the first direction, and three connection grooves 103 are provided at positions corresponding to the middle beam. The three connection protrusions 41 make the connection between the insulating connector and the middle beam more stable. And among the three connection protrusions 41, two are located at the two ends of the head 20, and one is located in the middle of the head 20. Of course, the specific positions of the three connection protrusions 41 can be adaptively adjusted by those skilled in the art.

[0072] In some embodiments not shown, other numbers of connecting protrusions 41 may be provided, for example, one, two, four, or more than four are all feasible embodiments.

[0073] In some embodiments not shown, the connecting portion 40 may also be in other structural forms, such as a connecting hole, a connecting buckle, etc., as long as the insulating connector can be fixed on the middle beam.

[0074] like Figure 5 , Figure 6 and Figure 8 As shown, in the technical solution of this embodiment, and along the first direction, a bent plate 42 is provided on the side of the connecting protrusion 41. Specifically, when the connecting protrusion 41 is inserted into the connecting groove 103, the bent plate 42 is compressed, and the bent plate 42 applies an elastic pushing force to the side wall of the connecting groove 103, so that the connecting protrusion 41 and the connecting groove 103 are more closely matched, that is, the insulating connector and the middle beam are not easy to fall off.

[0075] Furthermore, the bending plate 42 is generally in a “V”-shaped structure, and a lower inclined surface thereof can also serve as a guide during installation.

[0076] Optionally, in this embodiment, a bending plate 42 is provided on both sides of each connecting protrusion 41. In some embodiments not shown, a bending plate 42 is provided only on one side of the connecting protrusion 41, or a bending plate 42 is provided only on one side or both sides of part of the connecting protrusions 41, which are all feasible embodiments.

[0077] like Figure 1 As shown, in the technical solution of this embodiment, the insulating connector also includes an output pole structure 50 and a connection bar 60, both of which are arranged on the head 20. Specifically, the output pole structure 50 is used to connect the battery pack with external components, so as to connect the battery pack as a whole to the vehicle and power the vehicle; the connection bar 60 is used to connect battery packs in different columns, including short-circuiting, bridging, etc.

[0078] like Figure 5 and Figure 7As shown, in the technical solution of this embodiment, a first accommodating recess 22 is provided on the head 20, and the first accommodating recess 22 penetrates the surface of the head 20 away from the plate 10 along the second direction, and penetrates the surface of the head 20 away from the plate 10 along the third direction, that is, the first accommodating recess 22 penetrates the top surface and one side surface of the head 20. The output pole structure 50 is provided in the first accommodating recess 22. The output pole structure 50 is made of metal and is connected to the insulating connector by an integral molding.

[0079] Those skilled in the art will appreciate that, since the output pole structure 50 and the middle beam are isolated by the head 20 , the connecting wires between the battery pack and the output pole structure 50 do not need to be wrapped with insulating materials, thereby simplifying the processing and assembly process.

[0080] like Figure 5 and Figure 8 As shown, in the technical solution of this embodiment, two output pole structures 50 are provided, and the two output pole structures 50 are respectively located on both sides of the head 20 along the first direction.

[0081] Correspondingly, two first accommodating recesses 22 are respectively disposed on both sides of the head 20, and two output pole structures 50 are respectively disposed in the two first accommodating recesses 22. One of the output pole structures 50 is a positive output pole, and the other output pole structure 50 is a negative output pole.

[0082] like Figure 6 and Figure 7 As shown, in the technical solution of this embodiment, a second accommodating recess 23 is further provided on the head 20, and the second accommodating recess 23 penetrates the surface of the head 20 away from the plate 10 along the second direction, and penetrates the surface of the head 20 away from the plate 10 along the third direction. Specifically, the second accommodating recess 23 is similar to the first accommodating recess 22 described above, and also penetrates the top surface and one side surface of the head 20. The connecting row 60 is provided in the bottom wall of the second accommodating recess 23.

[0083] from Figure 7 It can be seen that the connection row 60 is a long strip structure with connection holes at both ends. The connection row 60 is installed on the bottom wall of the second accommodating recess 23 by screws. The connection row 60 is a high-voltage connector. Of course, the connection row 60 can also be connected to the second accommodating recess 23 by hot pressing.

[0084] Similar to the above-mentioned output pole structure 50 , since the connection bar 60 and the middle beam are isolated by the head 20 , the connection wires connecting the battery pack and the connection bar 60 do not need to be wrapped with insulating materials, thereby simplifying the processing and assembly process.

[0085] In this embodiment, the connection row 60 is integrated on the insulating connector, that is, the independent high-voltage connector is eliminated, thereby optimizing the internal space layout of the battery pack and improving the energy density of the battery pack.

[0086] In addition, by adjusting the depth of the second accommodating recess 23, the electrical distance of the battery pack can be ensured, thereby improving the safety and reliability of the system. However, the independent high-voltage connector in the prior art is usually arranged above the end plate, and it is easy to fail to meet the electrical distance.

[0087] Optionally, the connection bar 60 is disposed between two output pole structures 50 . And preferably, the connection bar 60 is disposed in the middle of the head 20 .

[0088] Furthermore, since the first accommodating recess 22 and the second accommodating recess 23 are relatively weak positions of the head 20, the above-mentioned three connecting protrusions 41 are respectively arranged below the two first accommodating recesses 22 and the second accommodating recess 23, thereby reinforcing the structure of the head 20.

[0089] from Figure 1 It can be seen that in this embodiment, only one second receiving recess 23 and one connecting row 60 are provided. Those skilled in the art can adjust the number and arrangement of the second receiving recess 23 and the connecting row 60 according to actual needs (the number, position, and connection method of the battery pack).

[0090] like Figures 9 to 11 As shown, the present application also provides an intermediate beam assembly of a battery pack, and the intermediate beam assembly according to the present application includes a beam body 100 and the above-mentioned insulating connector 200. The beam body 100 extends along a first direction, and the beam body 100 has two first surfaces 101 relatively distributed along a second direction, and two second surfaces 102 distributed along a third direction. The plate portion 10 of the insulating connector 200 cooperates with the second surface 102, and the head portion 20 of the insulating connector 200 cooperates with the first surface 101.

[0091] Specifically, the middle beam assembly can be a cross beam or a longitudinal beam in the battery pack, which can be arranged at the edge of the battery pack bottom plate or at the inner side of the battery pack bottom plate. Fig.10 and Fig.11 It can be seen that, and Fig.10 and Fig.11In the direction shown, the two first surfaces 101 of the beam body 100 refer to its upper and lower surfaces, and the two second surfaces 102 of the beam body 100 refer to its front and rear surfaces. When the insulating connector 200 is assembled on the beam body 100, the plate portion 10 is attached to one of the second surfaces 102, and the head portion 20 is attached to one of the first surfaces 101, that is, the insulating connector 200 covers the top and one side of the beam body 100.

[0092] Optionally, the beam body 100 is a metal beam.

[0093] Optionally, the beam body 100 and the insulating connector 200 may be detachably connected, for example, by plug-in, fastener connection, snap-on connection, etc.

[0094] Optionally, the beam body 100 and the insulating connector 200 may also be connected in one piece, for example, by an integrated casting process of metal and plastic, welding, etc.

[0095] In the case where the beam body 100 and the insulating connector 200 can be detachably connected, along the second direction, a connecting protrusion 41 is provided on the surface of the head 20 facing the plate portion 10, and a connecting groove 103 is provided on a first surface 101 of the beam body 100, and the connecting protrusion 41 is inserted into the connecting groove 103. That is, the top surface of the beam body 100 is provided with a connecting groove 103, and the matching manner of the connecting protrusion 41 and the connecting groove 103 has been described in detail above, and will not be repeated here.

[0096] Furthermore, if Fig. 9 and Fig.10 As shown, a bottom plate can also be provided on the other first surface 101, that is, the bottom surface, of the beam body 100, and the bottom plate serves as a part of the battery pack bottom plate. The beam body 100 and the bottom plate can be connected by fasteners or by welding.

[0097] like Figure 12 to Figure 14 As shown, the present application also provides a battery pack, and the battery pack according to the embodiment of the present application includes a box body 300 and a battery pack 600. The box body 300 includes a bottom plate 301 and the above-mentioned middle beam assembly 400 arranged on the bottom plate 301. The box body 300 has a receiving space 500, and the battery pack 600 is arranged in the receiving space.

[0098] As described above, the middle beam assembly 400 may be a cross beam or a longitudinal beam on the bottom plate 301 .

[0099] like Fig.13 and Fig.14As shown, the middle beam assembly 400 is arranged in the box body 300 along the first direction, and the middle beam assembly 400 divides the accommodating space 500 into a battery compartment 501 and an electrical compartment 502. The battery pack 600 is arranged in the battery compartment 501, and one end of the battery pack 600 cooperates with the surface of the plate 10 and the head 20 facing away from the electrical compartment 502.

[0100] Specifically, the middle beam assembly 400 is arranged in the box body 300 along the first direction, that is, the middle beam assembly 400 is a cross beam. The above-mentioned insulating connector 200 can be set at one end of the battery pack 600, or at both ends of the battery pack 600. The insulating connector 200 can achieve a fixing effect on the battery pack 600, that is, it has the function of an end plate, and the insulating connector 200 can completely isolate the battery pack 600 from the beam body 100. The end of the battery pack 600 is in contact with the plate portion 10.

[0101] Optionally, the battery pack 600 and the insulating connector 200 may be assembled in the following two ways.

[0102] 1. The insulating connector 200 is first connected to the beam body 100, and then the battery pack 600 is assembled on the side of the insulating connector 200 away from the beam body 100;

[0103] 2. The insulating connector 200 is first matched with the battery pack 600 (clamping the battery pack 600), and then the insulating connector 200 and the battery pack 600 are placed into the accommodation space together. During the placement process, the insulating connector 200 is connected to the beam body 100.

[0104] from Fig.13 It can be seen that the box body 300 has two side beams along the first direction, both of which extend along the third direction, and the side beams are arranged at the side edges of the bottom plate 301. There are multiple battery packs 600, and each battery pack 600 includes multiple single cells (optionally square cells). The multiple single cells of each battery pack 600 are arranged along the third direction, and the adjacent battery packs 600 are arranged along the first direction.

[0105] Further, along the first direction, both ends of the beam body 100 extend to the two side beams respectively, and both ends of the insulating connector 200 also extend to the two side beams respectively, that is, when the insulating connector 200 has the function of an end plate, an integral end plate structure is formed.

[0106] In the prior art, multiple end plates are usually provided, each end plate corresponds to the end of a column of battery packs, and adjacent end plates are connected by fasteners. However, this structure has the following problems:

[0107] 1. There are many parts, including end plates with output poles and end plates without output poles, and the parts are complex;

[0108] 2. Each end plate has a high processing accuracy, and the installation accuracy between adjacent end plates needs to be guaranteed, otherwise the bottoms of multiple end plates will be uneven, which will eventually make it difficult to install the battery module into the battery compartment.

[0109] In the technical solution of this embodiment, when the insulating connector 200 has the function of an end plate, it serves as an integrated end plate, which, on the one hand, reduces the number of parts (1 to 2 insulating connectors 200), and on the other hand, ensures the processing accuracy of the insulating connector 200 itself, thereby simplifying the processing and assembly process.

[0110] The present application also provides a vehicle, and the vehicle according to the present application includes the above-mentioned battery pack.

[0111] Optionally, the vehicle is a new energy electric vehicle.

[0112] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An insulating connector for a battery pack, used to connect an intermediate beam, It is characterized in that include: A plate portion (10) extending along a first direction; a head portion (20) connected to the end portion of the plate portion (10) along the second direction, and the head portion (20) protrudes from the plate portion (10) in the third direction, Wherein, the plate portion (10) and the head portion (20) are both made of insulating material, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The insulating connector according to claim 1, It is characterized in that The head (20) is provided with a receiving cavity (21), the receiving cavity (20) is provided with a reinforcing rib (30), and two sides of the reinforcing rib (30) are connected to the inner wall of the receiving cavity (21); wherein the reinforcing rib (30) extends along the second direction; or, the reinforcing rib (30) extends along the third direction; or, the reinforcing rib (30) is arranged at an inclination.

3. The insulating connector according to claim 1, It is characterized in that At least one connecting portion (40) is provided on the plate portion (10) and / or the head portion (20), and the connecting portion (40) is used to be connected to the middle beam.

4. The insulating connector according to claim 3, It is characterized in that The connecting portion (40) comprises a connecting protrusion (41), and along the first direction, a bending plate (42) is provided on the side of the connecting protrusion (41).

5. The insulating connector according to any one of claims 1 to 4, It is characterized in that The insulating connector also includes an output pole structure (50) and a connection row (60), and the output pole structure (50) and the connection row (60) are both arranged on the head (20).

6. The insulating connector according to claim 5, It is characterized in that The head (20) is provided with a first accommodating recess (22), the first accommodating recess (22) penetrating a surface of the head (20) that is away from the plate portion (10) along a second direction, and penetrating a surface of the head (20) that is away from the plate portion (10) along a third direction, and the output pole structure (50) is arranged in the first accommodating recess (22).

7. The insulating connector according to claim 6, It is characterized in that The output pole structures (50) are provided in two numbers, and the two output pole structures (50) are respectively located on two sides of the head (20) along the first direction.

8. The insulating connector according to claim 7, It is characterized in that The head (20) is also provided with a second accommodating recess (23), the second accommodating recess (23) penetrating the surface of the head (20) that faces away from the plate portion (10) along the second direction, and penetrating the surface of the head (20) that faces away from the plate portion (10) along the third direction, and the connecting row (60) is arranged in the second accommodating recess (23).

9. The insulating connector according to claim 8, It is characterized in that The connection row (60) is arranged between the two output pole structures (50).

10. A middle beam assembly of a battery pack, It is characterized in that include: A beam body (100) extending along a first direction, the beam body (100) having two first surfaces (101) distributed opposite to each other along a second direction, and two second surfaces (102) distributed along a third direction; An insulating connector (200), wherein the insulating connector (200) is the insulating connector according to any one of claims 1 to 9, wherein the plate portion (10) cooperates with the second surface (102), and the head portion (20) cooperates with the first surface (101).

11. The intermediate beam assembly according to claim 10, It is characterized in that The beam body (100) and the insulating connector (200) are detachably connected; or, the beam body (100) and the insulating connector (200) are integrally formed.

12. The intermediate beam assembly according to claim 11, It is characterized in that Along the second direction, a connection protrusion (41) is provided on the surface of the head portion (20) facing the plate portion (10), and a connection groove (103) is provided on one surface of the beam body (100), and the connection protrusion (41) is inserted into the connection groove (103).

13. A battery pack, It is characterized in that include: A box body (300), comprising a bottom plate (301) and an intermediate beam assembly (400) arranged on the bottom plate (301), wherein the intermediate beam assembly is the intermediate beam assembly according to any one of claims 10 to 12, and the box body (300) has a containing space (500); A battery pack (600) is arranged in the accommodation space.

14. The battery pack according to claim 13, It is characterized in that The middle beam assembly (400) is arranged in the box body (300) along a first direction, and the middle beam assembly (400) divides the accommodating space (500) into a battery compartment (501) and an electrical compartment (502); the battery pack (600) is arranged in the battery compartment (501), and one end of the battery pack (600) abuts against surfaces of the plate portion (10) and the head portion (20) that are away from the electrical compartment (502).

15. A vehicle, It is characterized in that Comprising a battery pack as claimed in claim 13 or 14.

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