Connecting device, battery device and vehicle

Abstract

The utility model relates to a connecting device, a battery device and a vehicle. The connecting device is used for being arranged in a battery box body of the battery device. The connecting device comprises a support structure. The bracket structure is connected to the battery box body and is made of an insulating material; the support structure is provided with a first connecting surface used for connecting the first main connecting bar and the second main connecting bar, the first connecting surface is provided with a first groove and a second groove, the first main connecting bar is connected to the groove bottom of the first groove, the second main connecting bar is connected to the groove bottom of the second groove, and the polarity of the first main connecting bar is opposite to that of the second main connecting bar. Wherein the first groove and the second groove are defined by groove walls arranged on the first connecting surface in a protruding mode respectively, and at least part of the groove walls are shared between the first groove and the second groove.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicle power battery, and particularly relates to a connecting device, a battery device and a vehicle. BACKGROUND

[0002] Current new energy vehicle batteries are developing towards high volume utilization and high energy utilization, which poses greater challenges to the space utilization of battery packs. The number of current battery cell stacks is also increasing, and the risk of thermal runaway and insulation failure will also increase. Therefore, how to propose a scheme that takes into account improving space utilization and reducing the risk of thermal runaway and insulation failure has become an important topic to be solved in the related field. SUMMARY

[0003] To overcome the problems in the prior art, the present disclosure provides a connecting device that can take into account improving the space utilization of a battery device and reducing the risk of thermal runaway and insulation failure of the battery device.

[0004] According to a first aspect of an embodiment of the present disclosure, a connecting device is provided, wherein the connecting device is arranged in a battery box of a battery device; the connecting device comprises a support structure; the support structure is connected to the battery box and is made of an insulating material; the support structure has a first connecting surface for connecting a first main connecting row and a second main connecting row, the first connecting surface is provided with a first groove and a second groove, the first main connecting row is connected to the groove bottom of the first groove, the second main connecting row is connected to the groove bottom of the second groove, and the polarity of the first main connecting row and the second main connecting row is opposite; wherein the first groove and the second groove are respectively bounded by a groove wall protruding from the first connecting surface, and the first groove and the second groove share at least part of the groove wall.

[0005] In some exemplary embodiments of the present disclosure, the first main connecting row is connected to the groove bottom of the first groove via at least two first connecting pieces, and the second main connecting row is connected to the groove bottom of the second groove via at least two second connecting pieces; wherein the at least two first connecting pieces are arranged in a first direction, the first direction is parallel to the first connecting surface, the at least two second connecting pieces are arranged in a second direction, the second direction is parallel to the first connecting surface and intersects the first direction.

[0006] In some example embodiments of the present disclosure, the support structure comprises a first frame and a second frame, the first slot is formed in a portion of the first connecting surface located at the first frame, and the second slot is formed in a portion of the first connecting surface located at the second frame; wherein: along the second direction, the width of the first frame is less than the width of the second frame; and / or, along the first direction, the width of the first frame is greater than the width of the second frame.

[0007] In some example embodiments of the present disclosure, the first main connecting row comprises two first sub-connecting rows, each of the first sub-connecting rows comprises a first connecting portion extending along the first direction, and the first connecting portions of the two first sub-connecting rows are at least partially overlapped and are commonly connected to the bottom of the first slot via the first connecting member.

[0008] In some example embodiments of the present disclosure, the first sub-connecting row further comprises a first extension portion, the first extension portion is connected to the first connecting portion by a bending connection, and the two first extension portions extend in different directions.

[0009] In some example embodiments of the present disclosure, wherein the first slot and the second slot are arranged along the first direction; one of the first extension portions is connected to an end portion of one of the first connecting portions away from the second slot, and the other of the first extension portions is connected to a side surface of the other of the first connecting portions close to an end portion of the second slot; the two first extension portions respectively extend in opposite directions perpendicular to the first connecting surface.

[0010] In some example embodiments of the present disclosure, the first extension portion of one of the first sub-connecting rows is connected to a high-voltage device, and the first extension portion has two portions connected by a folding bending connection.

[0011] In some example embodiments of the present disclosure, the slot walls of the first slot and the second slot are respectively arranged in a surrounding manner.

[0012] In some example embodiments of the present disclosure, the slot walls are provided with a first notch and a second notch; the first notch is connected to the first slot and is used for the first main connecting row to extend out of the first slot; the second notch is connected to the second slot and is used for the second main connecting row to extend out of the second slot; wherein, the first notch and the second notch are not oriented in the same direction.

[0013] In some example embodiments of the present disclosure, the first slot and the second slot are arranged along a first direction, the first direction is parallel to the first connecting surface; wherein, the first notch and the second notch are respectively oriented towards opposite sides in a second direction, the second direction is parallel to the first connecting surface and perpendicular to the first direction.

[0014] In some example embodiments of the present disclosure, a projection of the groove wall on a reference plane parallel to the first connecting surface is in the shape of "S".

[0015] In some example embodiments of the present disclosure, the connecting device further comprises: a first protective cover detachably connected to the groove wall of the first groove and located above at least part of the groove opening of the first groove; and / or, a second protective cover detachably connected to the groove wall of the second groove and located above at least part of the groove opening of the second groove.

[0016] In some example embodiments of the present disclosure, the connecting device further comprises a heat insulation layer; the heat insulation layer is arranged on at least one side of the groove wall and is made of insulating material.

[0017] In some example embodiments of the present disclosure, the heat insulation layer is further arranged on at least one side of the support structure.

[0018] In some example embodiments of the present disclosure, wherein: the heat insulation layer is a ceramic composite tape; and / or, the thickness of the heat insulation layer is 0.3mm-1.5mm.

[0019] According to a second aspect of the embodiments of the present disclosure, a battery device is provided, wherein the battery device comprises a battery box and the connecting device provided in the present disclosure and described in the above embodiments; the battery box is used for accommodating battery cells; the support structure of the connecting device is connected to the battery box.

[0020] In some example embodiments of the present disclosure, the battery device comprises a battery pack, the battery pack comprises a plurality of battery cells arranged along a third direction; the battery box is provided with a longitudinal beam extending along the third direction; wherein the support structure is connected to the longitudinal beam and located at the end of the longitudinal beam.

[0021] In some example embodiments of the present disclosure, the battery device comprises two battery packs, the two battery packs are respectively located on both sides of the longitudinal beam in a fourth direction, the fourth direction is perpendicular to the third direction; wherein the two battery packs located on both sides of the longitudinal beam are respectively connected to a first main connecting row and a second main connecting row.

[0022] In some example embodiments of the present disclosure, the support structure comprises a first frame body and a second frame body, the first slot is located at a portion of the first connecting surface of the first frame body, and the second slot is located at a portion of the first connecting surface of the second frame body; wherein, along a fourth direction perpendicular to the third direction, the width of the first frame body is smaller than the width of the second frame body; the first frame body is located at a portion of the longitudinal beam that has a projected overlap with the battery pack, and the second frame body is located at a portion of the longitudinal beam that has no projected overlap with the battery pack.

[0023] In some example embodiments of the present disclosure, a side of the battery cell facing the connecting device is provided with a pressure relief mechanism.

[0024] In some example embodiments of the present disclosure, the battery box has a battery compartment for accommodating the battery cell and an electrical compartment located above the battery compartment and at least for accommodating high-voltage devices; wherein, the two ends of the first main connecting row extend to the battery compartment and the electrical compartment respectively, and are connected to the battery cell and the high-voltage devices respectively, and the two ends of the second main connecting row extend to the battery compartment and the electrical compartment respectively, and are connected to the battery cell and the high-voltage devices respectively.

[0025] According to a third aspect of the embodiments of the present disclosure, a vehicle is provided, wherein the vehicle comprises the battery device provided in the present disclosure and described in the above embodiments.

[0026] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects: the connecting device provided in the present disclosure comprises a support structure; the support structure is made of insulating material; the first connecting surface of the support structure is provided with a first slot and a second slot, the first main connecting row is connected to the bottom of the first slot, and the second main connecting row is connected to the bottom of the second slot; the first slot and the second slot are respectively delimited by a slot wall protruding from the first connecting surface, and at least part of the slot wall is shared between the first slot and the second slot. Through the above design, the present disclosure can increase the creepage distance by using the slot wall, improve the insulation isolation effect of the two regions of the first connecting surface located between the first slot and the second slot, and improve the insulation isolation effect between the connection position of the connecting row and the edge region of the support structure, thereby avoiding insulation failure. Accordingly, when the arrangement form of the first main connecting row and the second main connecting row on the connecting device is relatively compact, or when the connecting device is close to other live structures in the battery device, the insulation failure problem can be avoided, thereby improving the space utilization of the battery device and ensuring the safety of the battery device.

[0027] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0029] Figure 1 This is a schematic diagram of the structure of a connection device according to some exemplary embodiments of the present disclosure;

[0030] Figure 2 yes Figure 1 An exploded view of the connecting device is shown;

[0031] Figure 3 and Figure 4 They are Figure 2 The diagram shows a partial structure viewed from two different perspectives.

[0032] Figure 5 yes Figure 3 A top view of the structure shown;

[0033] Figure 6 It is along Figure 5 A schematic diagram of the cross-section constructed by line AA in the diagram;

[0034] Figure 7 yes Figure 6 An enlarged schematic diagram of part B in the diagram;

[0035] Figure 8 yes Figure 6 An enlarged schematic diagram of part C in the diagram;

[0036] Figure 9 yes Figure 1 The diagram shows the structure when the connecting device is connected to the first main connecting bar and the second main connecting bar;

[0037] Figure 10 and Figure 11 They are Figure 1 The diagram shows the process of assembling the connecting device with the first main connecting bar and the second main connecting bar.

[0038] Figure 12 This is a partial enlarged view of a battery device illustrated according to some exemplary embodiments of the present disclosure;

[0039] Figure 13 yes Figure 12 Top view;

[0040] Figure 14 It is along Figure 13 A schematic diagram of the cross section made by the straight line DD in the diagram.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100. connecting device; 1141. bushing;

[0043] 110. bracket structure; 1142. rivet bolt;

[0044] 1101. first connecting surface; 115. positioning column;

[0045] 1102. first slot; 120. thermal insulation layer;

[0046] 1103. second slot; 131. first protective cover;

[0047] 1104. first frame body; 1311. first buckle;

[0048] 1105. second frame body; 132. second protective cover;

[0049] 111. slot wall; 1321. second buckle;

[0050] 1111. first notch; 210. first main connecting row;

[0051] 1112. second notch; 211. first sub-connecting row;

[0052] 1113. clamping groove; 212. first sub-connecting row;

[0053] 112. first connecting hole; 220. second main connecting row;

[0054] 1121. nut; 221. second sub-connecting row;

[0055] 1122. bolt; 222. second sub-connecting row;

[0056] 113. mounting portion; 310. longitudinal beam;

[0057] 1131. second connecting surface; 400. battery pack;

[0058] 1132. accommodating groove; 410. battery cell;

[0059] 114. second connecting hole; 411. pressure relief mechanism. DETAILED DESCRIPTION

[0060] Some embodiments of the present disclosure will be described in detail herein, with examples represented in the accompanying drawings. The following description is made with reference to the accompanying drawings in which like reference numerals represent like elements, or similar elements, unless otherwise described. Various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will become apparent to those skilled in the art after a study of the following description. For instance, the order in which operations are described is merely exemplary and is not limited to the described order unless otherwise specified. Additionally, features described herein can be omitted in order to improve clarity and conciseness.

[0061] The implementations described in some embodiments of the present disclosure are not meant to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0062] Referring to Figure 1 , a structural schematic diagram of the connection device 100 proposed by the present disclosure is representatively shown. In the exemplary implementation, the connection device 100 proposed by the present disclosure is explained by taking the application to the in-vehicle power battery as an example. It is easy for those skilled in the art to understand that, in order to apply the relevant design of the present disclosure to other types of battery devices, various modifications, additions, substitutions, deletions or other changes can be made to the following specific implementation, which are still within the scope of the principle of the connection device 100 proposed by the present disclosure.

[0063] As shown in Figure 1 , in an embodiment of the present disclosure, the connection device 100 proposed by the present disclosure comprises a bracket structure 110. Referring to Figures 2 to 10 , Figure 2 , an exploded schematic diagram of the connection device 100 is representatively shown, in which specifically the first protective cover 131 and the second protective cover 132 are disassembled from the bracket structure 110; Figure 3 and Figure 4 representatively show Figure 2 , a structural schematic diagram of the partial structure in two different viewing angles is shown, in which specifically the structure of the bracket structure 110 and the heat insulation layer 120 is shown; Figure 5 , a top view of the structure shown in Figure 3 is representatively shown; Figure 6 , a cross-sectional schematic diagram made along the straight line A-A in Figure 5 is representatively shown; Figure 7 , an enlarged schematic diagram of the B part in Figure 6 is representatively shown; Figure 8 , an enlarged schematic diagram of the C part in Figure 6 is representatively shown;Figure 9 The diagram shows a representative structural schematic of the connecting device 100 connected to the first main connecting bar 210 and the second main connecting bar 220. Figure 10 and Figure 11 The accompanying drawings illustrate, respectively, the process diagrams of the connection device 100 being connected and assembled with the first main connecting bar 210 and the second main connecting bar 220. The structure, connection method, and functional relationship of each major component of the connection device 100 proposed in this disclosure will be described in detail below with reference to the above-mentioned drawings.

[0064] like Figures 1 to 5 , Figure 9 As shown, in one embodiment of this disclosure, the connecting device 100 is disposed in the battery housing of a battery device. A support structure 110 is connected to the battery housing and is made of insulating material. The support structure 110 has a first connecting surface 1101 (e.g., the top surface of the support structure 110 shown in the figures), which is used to connect a first main connecting bar 210 and a second main connecting bar 220. The first connecting surface 1101 is provided with a first groove 1102 and a second groove 1103. The bottom of the first groove 1102 (i.e., the portion of the first connecting surface 1101 located in the first groove 1102) is used to connect the first main connecting bar 210, and the bottom of the second groove 1103 (i.e., the portion of the first connecting surface 1101 located in the second groove 1103) is used to connect the second main connecting bar 2200. The first main connecting bar 210 and the second main connecting bar 220 have opposite polarities. Based on this, the first connecting surface 1101 is provided with a groove wall 111, and the first groove 1102 and the second groove 1103 are respectively defined by the groove wall 111. The first groove 1102 and the second groove 1103 share at least a portion of the groove wall 111. Through the above design, this disclosure can increase the creepage distance by utilizing the groove wall 111, improve the insulation isolation effect between the two areas of the first connecting surface 1101 located in the first groove 1102 and the second groove 1103, and improve the insulation isolation effect between the connection position of the connecting strip and the edge area of ​​the support structure 110, thereby avoiding insulation failure. Accordingly, when the arrangement of the first main connecting strip 210 and the second main connecting strip 220 on the connecting device 100 is relatively compact, or when the distance between the connecting device 100 and other charged structures (such as the battery cell 410) in the battery device is relatively close, insulation failure can be avoided. Therefore, while improving the space utilization of the battery device, the safety of the battery device can be guaranteed.

[0065] like Figure 5 , Figures 9 to 11As shown, in an embodiment of the present disclosure, the first main connection row 210 is connected to the groove bottom of the first groove 1102 via at least two first connection members (for example, the bolts 1122), such as but not limited to the two first connection members shown in the drawings. And, the second main connection row 220 is connected to the groove bottom of the second groove 1103 via at least two second connection members (for example, the bolts 1122), such as but not limited to the two second connection members shown in the drawings. Wherein, the first connection members and the second connection members can also be understood according to the first connection holes 112 or the nuts 1121 in the first groove 1102 and the second groove 1103 shown in Figure 5 、 Figure 7 and Figure 8 . On this basis, the at least two first connection members are arranged along a first direction, which is parallel to the first connection surface 1101, such as the direction D1 shown in the drawings, and the at least two second connection members are arranged along a second direction, which is parallel to the first connection surface and intersects with the first direction, such as perpendicular to the first direction, such as the direction D2 shown in the drawings. Through the above design, the present disclosure designs the arrangement direction of the connection members of the first main connection row 210 and the second main connection row 220 in the form of intersection, which can realize more reasonable structural design of the bracket structure 110, and avoid the problem of too large space occupation caused by the parallel arrangement direction of the first connection members and the second connection members. For example, taking Figure 5 as an example, when the two first connection members and the two second connection members are arranged along the direction D1, it will cause the size of the bracket structure 110 along the direction D1 to be too large, and for example, when the two first connection members and the two second connection members are arranged along the direction D2, it will cause the size of the part (for example, the first bracket body described below) corresponding to the first groove 1102 of the bracket structure 110 along the direction D2 to be too large. Furthermore, when the leading directions of the first main connection row 210 and the second main connection row 220 are relatively perpendicular (for example, the leading directions of the first sub-connection row 212 and the second sub-connection row 222 are relatively perpendicular), compared with the prior art, the present disclosure adopts the design that the arrangement direction of the first connection members and the second connection members is relatively perpendicular, so that the first main connection row 210 and the second main connection row 220 can realize the design of reducing the difference (for example, tending to be equal) in the width of the parts, thereby further facilitating the batch production of the first main connection row 210 and the second main connection row 220, and reducing the processing difficulty and production cost.

[0066] For example, as shown in Figure 5As shown in the embodiment of the present disclosure, the support structure 110 can include a first frame body 1104 and a second frame body 1105, the first slot 1102 is formed on the portion of the first connecting surface 1101 located at the first frame body 1104, and the second slot 1103 is formed on the portion of the first connecting surface 1101 located at the second frame body 1105. On this basis, the width of the first frame body 1104 along the second direction can be smaller than the width of the second frame body 1105. The width of the first frame body 1104 along the first direction can be greater than the width of the second frame body 1105. Through the above design, since the arrangement direction of the connecting pieces of the first main connecting row 210 and the second main connecting row 220 is designed to be intersected in the present disclosure, different parts of the support structure 110 can be set to have different width of the external dimensions, which is suitable for the application of the connecting device 100 in different positions of the battery device, and avoids the waste of space occupation due to the consistent width of the parts of the support structure 110.

[0067] As shown in the embodiment of the present disclosure, Figure 10 and Figure 11 As shown in the embodiment of the present disclosure, the first main connecting row 210 can include two first sub-connecting rows (for example, the first sub-connecting row 211 and the first sub-connecting row 212 shown in the drawings), which include first connecting parts extending along the first direction, and the two first connecting parts of the two first sub-connecting rows are at least partially overlapped and are commonly connected to the slot bottom of the first slot 1102 via the first connecting pieces. The second main connecting row 220 can include two second sub-connecting rows (for example, the second sub-connecting row 221 and the second sub-connecting row 222 described below), which include second connecting parts extending along the second direction, and the two second connecting parts of the two second sub-connecting rows are at least partially overlapped and are commonly connected to the slot bottom of the second slot 1103 via the second connecting pieces. Through the above design, the present disclosure designs the main connecting row to include two sub-connecting rows, which can facilitate the connection of the main connecting row with the battery cell and the high-voltage device. On this basis, the present disclosure arranges the two sub-connecting rows to be overlapped at the part connected to the connecting device 100, which can further reduce the space required when the connecting device 100 is connected to the main connecting row of the positive and negative electrodes, and the use of the connecting pieces to simultaneously connect the overlapped parts of the two connecting rows can also simplify the assembly process.

[0068] As shown in the embodiment of the present disclosure, Figure 10 and Figure 11As shown, in one embodiment of this disclosure, the first sub-connecting row may further include a first extension portion, which is bent and connected to the first connecting portion. The two first extension portions of the two first sub-connecting rows may extend in different directions. The second sub-connecting row may further include a second extension portion, which is bent and connected to the second connecting portion. The two second extension portions of the two second sub-connecting rows extend in different directions. Through the above design, this disclosure facilitates the lead-out of the first main connecting row 210 and the second main connecting row 220, avoids the lead-out portions being arranged too compactly or causing interference, reduces assembly difficulty, and improves structural rationality.

[0069] like Figure 10 As shown, in one embodiment of this disclosure, the first groove 1102 and the second groove 1103 are arranged along a first direction. A first extension is connected to the end of a first connecting portion away from the second groove 1103, and another first extension is connected to the side of another first connecting portion near the end of the second groove 1103. The two first extensions of the two first sub-connecting rows extend in opposite directions perpendicular to the first connecting surface 1101, for example, as shown in the figures, the two first extensions extend upwards and downwards respectively. Figure 11 As shown, in one embodiment of this disclosure, two second extension portions of two second sub-connecting rows are respectively connected to the ends of two second connecting portions on the same side in a second direction. The two second extension portions extend in the opposite direction perpendicular to the first connecting surface 1101 (e.g., the up and down direction in the figure), for example, the two second extension portions shown in the figure extend upward and downward respectively.

[0070] like Figure 9 As shown, in one embodiment of this disclosure, a first extension of a first sub-connector 212 connects to a high-voltage device. This first extension has two folded and bent portions that are stacked vertically as shown in the figures, thereby extending the portion of the first extension used to connect the high-voltage device along a second direction. Through this structural design, this disclosure saves the space occupied by the first extension of the first sub-connector 212.

[0071] like Figures 2 to 5 , Figure 9As shown, in an embodiment of the present disclosure, the groove walls 111 of the first groove 1102 and the second groove 1103 can be respectively arranged around. Accordingly, the first groove 1102 and the second groove 1103 have groove walls 111 on each side in the respective circumferential direction. The first groove 1102 is used to accommodate part of the structure of the first main connecting row 210, and the second groove 1103 is used to accommodate part of the structure of the second main connecting row 220. Through the above design, the present disclosure can further improve the insulation effect of the connection between the first main connecting row 210, the second main connecting row 220 and the support structure 110 by arranging the groove walls 111 around the first groove 1102 and the second groove 1103 on each side in the respective circumferential direction.

[0072] As shown in Figures 1 to 5 , Figure 9 , based on the design that the groove walls 111 of the first groove 1102 and the second groove 1103 are respectively arranged around, in an embodiment of the present disclosure, the groove walls 111 can be provided with a first notch 1111 and a second notch 1112. The first notch 1111 is connected to the first groove 1102 described above, and the first notch 1111 can allow the first main connecting row 210 to extend out of the first groove 1102. The second notch 1112 is connected to the second groove 1103 described above, and the second notch 1112 can allow the second main connecting row 220 to extend out of the second groove 1103. On this basis, the orientations of the first notch 1111 and the second notch 1112 can be different.

[0073] As shown in Figures 1 to 5 , Figure 9 , in an embodiment of the present disclosure, the orientations of the first notch 1111 and the second notch 1112 can be opposite, for example, the first notch 1111 and the second notch 1112 respectively face opposite sides in the direction D2 shown in the drawings. For example, the connecting device 100 proposed by the present disclosure adopts Figure 12 and Figure 13When the arrangement is installed on the longitudinal beam 310, the first notch 1111 and the second notch 1112 are respectively directed to opposite sides in the direction D4 shown in the figure, i.e., respectively directed to the two battery packs 400 on both sides of the longitudinal beam 310, so as to facilitate the connection of the first main connecting row 210 (the first sub-connecting row 211) and the second main connecting row 220 (the second sub-connecting row 221) of the two battery packs 400 to the connecting device 100 via the two notches. Through the above design, the first notch 1111 and the second notch 1112 can facilitate the connection of the lead-out structure of the two battery packs, reduce the bending of the connecting row, reduce the assembly difficulty, and simplify the structural complexity. On this basis, since the directions of the first notch 1111 and the second notch 1112 are different, the first main connecting row 210 and the second main connecting row 220 can be respectively led out from different directions, further reducing the assembly difficulty and improving the structural rationality. In some other embodiments of the present disclosure, when the slot wall 111 is provided with the first notch 1111 and the second notch 1112, the directions of the first notch 1111 and the second notch 1112 can also be the same, and the present embodiment is not limited thereto.

[0074] As shown in Figures 2 to 5 , Figure 9 , based on the design that the slot wall 111 is respectively arranged around the first slot 1102 and the second slot 1103, in an embodiment of the present disclosure, the first slot 1102 and the second slot 1103 can be arranged along a first direction (for example, the direction D1 shown in the figure), which is parallel to the first connecting surface 1101. On this basis, the first notch 1111 and the second notch 1112 can be respectively directed to opposite sides in a second direction (for example, the direction D2 shown in the figure), which is parallel to the first connecting surface 1101 and perpendicular to the first direction. Through the above design, the present disclosure can realize the "front and back" connection of the first main connecting row 210 and the second main connecting row 220 on the connecting device 100, and at the same time realize the "left and right" lead-out of the first main connecting row 210 and the second main connecting row 220 from the connecting device 100, further ensuring the spaced arrangement of the lead-out parts of the first main connecting row 210 and the second main connecting row 220 in space, improving the insulation performance and the structural rationality. In some other embodiments of the present disclosure, the first notch 1111 and the second notch 1112 can also be respectively directed to opposite sides in the first direction, and the present embodiment is not limited thereto.

[0075] As shown in Figures 2 to 5As shown, based on the design in which the slot walls 111 are arranged around the first slot 1102 and the second slot 1103, in an embodiment of the present disclosure, on a reference plane parallel to the first connection surface 1101, the orthographic projection pattern of the slot wall 111 can be approximately in an "S" shape. Through the above design, on the basis of realizing the structural design of the surrounding arrangement of the slot wall 111 and the first notch 1111 and the second notch 1112, the present disclosure can further reduce the structural complexity of the slot wall 111 and facilitate processing.

[0076] It should be noted that Figures 2 to 5 in the illustrated embodiment, the orthographic projection pattern of the slot wall 111 being approximately in an "S" shape is taken as an example for illustration. That is, except for a part of the slot wall 111 between the first slot 1102 and the second slot 1103, all or part of the edge regions of the first connection surface 1101 (such as the regions provided with the first notch 1111 and the second notch 1112) are provided with the slot wall 111. It should be understood that in various possible embodiments conforming to the design concept of the present disclosure, the slot wall 111 in the edge region of the first connection surface 1101 can also be other structures. Accordingly, the orthographic projection pattern of all the slot walls 111 protruding on the first connection surface 1101 as a whole can also be other shapes, such as " shape, "丄" shape, "凵" shape, "ㄣ" shape, "H" shape, "日" shape, etc., and is not limited to this embodiment.

[0077] Such as Figure 1 、 Figure 2 and Figure 9 As shown, in an embodiment of the present disclosure, the connection device 100 proposed by the present disclosure may further include a first protective cover 131. The first protective cover 131 is detachably connected to the slot wall 111 of the first slot 1102, and the first protective cover 131 is specifically located above at least part of the slot opening of the first slot 1102. Through the above design, the present disclosure can use the first protective cover 131 to shield at least part of the first slot 1102, further protecting the first main connection row 210 from being impacted and knocked from above, and at the same time can prevent dust and impurities from falling into the first slot 1102, improving the connection reliability of the first main connection row 210. In addition, the first protective cover 131 can also be made of an insulating material, thereby further improving the insulation effect. For example, as Figure 11 shown, when the first main connection row 210 has been connected to the connection device 100 and it is necessary to disassemble or connect and assemble the second main connection row 220 and the connection device 100, the first protective cover 131 can be installed on the bracket structure 110 to prevent the operator from contacting the first main connection row 210, further improving safety, and further facilitating the arrangement of the first main connection row 210 and the second main connection row 220 at a relatively close distance on the connection device 100.

[0078] As shown in Figure 2 , based on the design that the connecting device 100 comprises the first protective cover 131, in an embodiment of the present disclosure, the first protective cover 131 and the groove wall 111 can adopt a clamping structure to realize quick disassembly and assembly. For example, the first protective cover 131 can be provided with a first buckle 1311, and the groove wall 111 can be provided with a clamping groove 1113 at a position corresponding to the first buckle 1311, the first buckle 1311 and the clamping groove 1113 are clamped and matched, and the quick disassembly and assembly of the first protective cover 131 and the groove wall 111 is realized. In some other embodiments of the present disclosure, the first protective cover 131 and the groove wall 111 can also be connected in other ways, such as adhesion, connector connection, etc., and are not limited to the present embodiment.

[0079] As shown in Figure 1 , Figure 2 and Figure 9 , in an embodiment of the present disclosure, the connecting device 100 proposed by the present disclosure can further comprise a second protective cover 132, which is detachably connected to the groove wall 111 of the second groove 1103, and the second protective cover 132 is specifically located above at least part of the slot of the second groove 1103. Through the above design, the present disclosure can shield at least part of the second groove 1103 by using the second protective cover 132, further protect the second main connecting row 220 from being impacted and bumped from above, and at the same time, avoid dust and impurities from falling into the second groove 1103, and improve the connection reliability of the second main connecting row 220. In addition, the second protective cover 132 can also be made of insulating material, thereby further improving the insulation effect. For example, as shown in Figure 10 , when the second main connecting row 220 has been connected with the connecting device 100, and it is necessary to implement the disassembly or connection assembly of the first main connecting row 210 and the connecting device 100, the second protective cover 132 can be installed on the bracket structure 110, so as to avoid the operator from contacting the second main connecting row 220, further improve the safety, and further facilitate the arrangement of the first main connecting row 210 and the second main connecting row 220 at a closer distance on the connecting device 100.

[0080] As shown in Figure 2 , based on the design that the connecting device 100 comprises the second protective cover 132, in an embodiment of the present disclosure, the second protective cover 132 and the groove wall 111 can adopt a clamping structure to realize quick disassembly and assembly. For example, the second protective cover 132 can be provided with a second buckle 1321, and the groove wall 111 can be provided with a clamping groove 1113 at a position corresponding to the second buckle 1321, the second buckle 1321 and the clamping groove 1113 are clamped and matched, and the quick disassembly and assembly of the second protective cover 132 and the groove wall 111 is realized. In some other embodiments of the present disclosure, the second protective cover 132 and the groove wall 111 can also be connected in other ways, such as adhesion, connector connection, etc., and are not limited to the present embodiment.

[0081] As Figures 1 to 5 shown in the embodiments of the present disclosure, the connecting device 100 can further comprise a heat insulation layer 120. The heat insulation layer 120 can be arranged on at least one side of the groove wall 111, and the heat insulation layer 120 is made of insulating material. By using the heat insulation layer 120, the present disclosure can achieve heat insulation protection of the groove wall 111. The heat insulation performance of the heat insulation layer 120 at least embodies the following characteristics: when the temperature of the outside of the heat insulation layer 120 reaches the temperature of the jet flow of the pressure relief mechanism 411 when the thermal runaway occurs in the battery cell 410, the temperature of the inside of the heat insulation layer 120 is less than or equal to the thermal deformation temperature of the material of the bracket structure 110. In other words, when the battery device occurs thermal runaway, and the pressure relief mechanism 411 of the battery cell 410 is discharged, the heat flow of the pressure relief mechanism 411 is sprayed to the heat insulation layer 120, which increases the temperature of the outside of the heat insulation layer 120. During this process, by using the heat insulation characteristics of the heat insulation layer 120, it can be ensured that the temperature of the groove wall 111 (i.e. the bracket structure 110) on the inside of the heat insulation layer 120 will not rise to its thermal deformation temperature, that is, the groove wall 111 can be prevented from being deformed by heat. Through the above design, the present disclosure can further improve the high-temperature resistance of the connecting device 100 by using the heat insulation layer 120 arranged on the groove wall 111, thereby effectively reducing the risk of thermal runaway of the battery device, ensuring that the high-voltage device will not be damaged by high temperature, and reducing the risk of fire of the battery device.

[0082] Based on the design that the connecting device 100 comprises the heat insulation layer 120, in an embodiment of the present disclosure, for the part of the groove wall 111 located between the first groove 1102 and the second groove 1103, the heat insulation layer 120 can be arranged on the two side surfaces of the part of the groove wall 111 respectively facing the first groove 1102 and the second groove 1103.

[0083] Based on the design that the connecting device 100 comprises the heat insulation layer 120, in an embodiment of the present disclosure, for the part of the groove wall 111 located at the edge region of the bracket structure 110, the heat insulation layer 120 can be arranged on the outside of the part of the groove wall 111, of course, the heat insulation layer 120 can also be arranged on the inside of the part of the groove wall 111 located at the edge region, which is not limited to the present embodiment.

[0084] As Figure 3 and Figure 4As shown in one embodiment of this disclosure, for a plurality of groove walls 111 extending in different directions, the groove wall 111 that separates the first groove 1102 and the second groove 1103, i.e., the groove wall 111 located between the first groove 1102 and the second groove 1103 and extending along direction D2 in the figure, can have a heat insulation layer 120 provided on both sides. Besides the aforementioned groove wall 111, for other groove walls 111, the heat insulation layer 120 can be selectively provided only on its outer side, or on both sides. Through the above design, while ensuring heat insulation function and preventing arcing, this disclosure can reduce the amount of heat insulation layer 120 used, reduce material costs, and simplify the assembly process.

[0085] In one embodiment of this disclosure, when the groove wall 111 is provided with a slot 1113, the upper edge of the heat insulation layer 120 can be lower than the position of the groove wall 111 where the slot 1113 is provided, so as to expose the slot 1113 and facilitate the snap-fit ​​and disassembly of the first protective cover 131 and the second protective cover 132.

[0086] like Figures 1 to 5 As shown, in one embodiment of this disclosure, the heat insulation layer 120 may also be disposed on at least one side of the support structure 110. Through the above design, this disclosure utilizes the heat insulation layer 120 to achieve heat insulation protection for the support structure 110, further improving the high-temperature resistance of the support structure 110. Simultaneously, thanks to the improved high-temperature resistance of the support structure 110, a more compact arrangement of the pressure relief mechanism 411 of the cell 410 and the connecting device 100 becomes possible. For example, the pressure relief mechanism 411 can be arranged towards the connecting device 100, and the distance between the pressure relief mechanism 411 and the connecting device 100 can be further reduced, further improving the space utilization of the battery device.

[0087] See Figure 12 As shown, based on the design of the heat insulation layer 120 disposed on the side of the support structure 110, in one embodiment of this disclosure, when the connecting device 100 is applied in the battery device and the pressure relief mechanism 411 of the cell 410 faces the connecting device 100, the heat insulation layer 120 can be disposed at least on the side of the support structure 110 facing the pressure relief mechanism 411. Through the above design, since the pressure relief mechanism 411 is arranged facing the connecting device 100, when the pressure relief mechanism 411 releases pressure, the ejected hot flow will directly impact the aforementioned side of the support structure 110. This disclosure can utilize the heat insulation layer 120 to further improve the high-temperature resistance of the support structure 110 and prevent thermal deformation of the support structure 110.

[0088] like Figures 2 to 4As shown, in an embodiment of the present disclosure, part of the groove walls 111 (e.g., other than the groove walls 111 located between the first groove 1102 and the second groove 1103) can be arranged along the edges of the first connecting surface 1101, such that one side of the part of the groove walls 111 (e.g., the side facing away from the first groove 1102 or the second groove 1103) is flush with part of the side surface of the bracket structure 110. Through the above design, the present disclosure can simplify the structural complexity of the bracket structure 110 provided with the groove walls 111, and simplify the manufacturing difficulty of the bracket structure 110. In addition, when the above-mentioned side surface of the bracket structure 110 is also provided with the heat insulation layer 120, the overall heat insulation layer 120 covering the part of the groove walls 111 and the bracket structure 110 can also be arranged at these positions, which avoids the existence of gaps between the two parts of the groove walls 111, thereby reducing the local heat insulation protection, and at the same time, it is beneficial to reduce the number of parts and simplify the assembly process. In some other embodiments of the present disclosure, the part of the groove walls 111 arranged along the edges of the first connecting surface 1101 and the side surface of the corresponding bracket structure 110 can also be staggered to form a stepped structure, thereby further prolonging the creepage distance and further improving the insulation performance, which is not limited to the present embodiment.

[0089] In an embodiment of the present disclosure, the heat insulation layer 120 can be a ceramic composite tape. Through the above design, by using the natural insulation advantage of the ceramic composite tape, the present disclosure can further prevent the arc phenomenon and further improve the insulation performance. In some other embodiments of the present disclosure, the heat insulation layer 120 can also adopt other materials or heat insulation structures, which are not limited to the present embodiment.

[0090] In an embodiment of the present disclosure, the thickness of the heat insulation layer 120 can be 0.3mm-1.5mm, such as 0.3mm, 0.5mm, 1mm, 1.2mm, 1.5mm, etc. Through the above design, since the heat insulation capacity of the heat insulation layer 120 increases with the increase of its thickness, the present disclosure selects a suitable range for the thickness of the heat insulation layer 120, which can avoid that the thickness of the heat insulation layer 120 is too small to cause insufficient heat insulation performance, such as failing to meet the design requirements of the heat insulation characteristics of the heat insulation layer 120. At the same time, the present disclosure can avoid that the thickness of the heat insulation layer 120 is too large to cause material waste, which is beneficial to reduce the material cost, reduce the weight, and reduce the space occupation. In some other embodiments of the present disclosure, the thickness of the heat insulation layer 120 can also be less than 0.3mm, or can be greater than 1.5mm, such as 0.29mm, 1.51mm, etc., which is not limited to the present embodiment.

[0091] In one embodiment of this disclosure, the material of the support structure 110 (i.e., the material of the groove wall 111) can be a liquid crystal polymer (LCP, also known as liquid crystal polymer, LCP plastic raw material, etc.). This type of material has good insulation properties and a certain degree of heat resistance. In other embodiments of this disclosure, the material of the support structure 110 can also be other materials, such as polyetheretherketone (PEEK), polyimide (PI), etc., and is not limited to this embodiment.

[0092] As described above, taking the application of the connecting device 100 proposed in this disclosure to a certain type of battery device as an example, and using the material of the support structure 110 as liquid crystal polymer and the heat insulation layer 120 as a ceramic composite strip with a thickness of 0.3 mm as an example, tests show that when the front temperature of the 0.3 mm thick ceramic composite strip is 500°C, the back temperature can be lower than 350°C. Here, 500°C is the temperature of the heat flow ejected when the pressure relief valve of the cell 410 of this type of battery device is activated, and 350°C is the minimum heat distortion temperature of the liquid crystal polymer. Therefore, it can be seen that by using the heat insulation layer 120, this disclosure can provide reliable heat insulation protection for the tank wall 111 (support structure 110), significantly improving the high temperature resistance performance of the connecting device 100.

[0093] In one embodiment of this disclosure, the heat insulation layer 120 may be bonded to the groove wall 111 and the support structure 110.

[0094] like Figures 5 to 7 As shown, in one embodiment of this disclosure, the bottom of the first groove 1102 and the bottom of the second groove 1103 may each be provided with a first connecting hole 112, and a nut 1121 is provided in the first connecting hole 112. Based on this, the first main connecting row 210 can be connected to the nut 1121 located in the first groove via bolt 1122, and the second main connecting row 220 can be connected to the nut 1121 located in the second groove via bolt 1122.

[0095] like Figure 7 As shown, based on the design of a nut 1121 provided in the first connecting hole 112, in one embodiment of this disclosure, the top surface of the nut 1121 can protrude beyond the first connecting surface 1101. For example, the height by which the top surface of the nut 1121 protrudes from the first connecting surface 1101 can be 0.5mm to 2mm, such as 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, etc. Through the above design, this disclosure can ensure a hard connection when the bolt 1122 and the nut 1121 are locked, avoiding the occurrence of torque slippage of the bolt 1122.

[0096] Based on the design that the first connecting hole 112 is provided with the nut 1121, in an embodiment of the present disclosure, the nut 1121 can be an insert nut, and the bracket structure 110 and the insert nut can be manufactured by an integral injection molding process.

[0097] As shown in Figures 1 to 6 , Figure 8 , in an embodiment of the present disclosure, the bracket structure 110 can be provided with a mounting portion 113 having a second connecting surface 1131 parallel to the first connecting surface 1101. The second connecting surface 1131 can be provided with a second connecting hole 114 provided with a bushing 1141. On this basis, the bracket structure 110 can be connected to the battery box via a pull rivet 1142 (see Figure 14 ) threaded through the bushing 1141. Through the above design, the present disclosure realizes the fixed connection of the connecting device 100 and the battery box by using the pull rivet 1142 and the bushing 1141, and can ensure the reliability of the connecting structure and avoid the generation of shaking and abnormal noise.

[0098] Based on the design that the second connecting hole 114 is provided with the bushing 1141, in an embodiment of the present disclosure, the bushing 1141 can be an insert bushing, and the bracket structure 110 and the insert bushing can be manufactured by an integral injection molding process.

[0099] As shown in Figure 8 , based on the design that the second connecting hole 114 is provided with the bushing 1141, in an embodiment of the present disclosure, the top surface of the bushing 1141 can protrude from the second connecting surface 1131. For example, the height of the top surface of the bushing 1141 protruding from the second connecting surface 1131 can be 0.5mm-2mm, such as 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, etc. Through the above design, the present disclosure can ensure that the pull rivet and the bushing 1141 are locked to realize hard linking, and avoid the situation that the pull rivet torque is untwisted.

[0100] As shown in Figures 1 to 6 , Figure 8 , based on the design that the bracket structure 110 is provided with the mounting portion 113, in an embodiment of the present disclosure, the mounting portion 113 can be provided with a receiving groove 1132 for accommodating part of the structure of the pull rivet, such as the part of the pull rivet protruding from the bushing 1141, and the second connecting surface 1131 is the groove bottom of the receiving groove 1132. Through the above design, the present disclosure can accommodate the pull rivet in the second connecting hole 114 (bushing 1141) and the receiving groove 1132, avoid the pull rivet exposed, and ensure the connection stability and reliability of the connecting device 100 and the battery box.

[0101] As shown in Figure 6 In an embodiment of the present disclosure, the support structure 110 can be provided with a positioning column 115 extending along the assembly direction of the connecting device 100 when being loaded into the battery box, for example, to Figure 12 and Figure 14 As an example of the structure shown in the drawings, when the connecting device 100 is arranged on the top of the longitudinal beam 310, i.e. the assembly direction of the connecting device 100 when being loaded into the battery box is the height direction of the battery box, then the positioning column 115 extends downward from the support structure 110 along the height direction. On this basis, the positioning column 115 can be inserted into the positioning hole provided on the battery box or positioned and matched with other corresponding positioning structures. Through the above design, the present disclosure can realize the positioning and matching of the connecting device 100 when being assembled in the battery box by using the positioning column 115, further improving the connection stability and reliability. At the same time, in the assembly process of the connecting device 100 and the battery box, the present disclosure can realize the guiding function by using the positioning column 115, guiding the connecting device 100 to move to the predetermined mounting position of the battery box, reducing the assembly difficulty and improving the assembly efficiency.

[0102] It should be noted that the connecting device 100 shown in the drawings and described in the present specification is only a few examples of many connecting devices 100 that can employ the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details or any components of the connecting device 100 shown in the drawings or described in the present specification.

[0103] Based on the above detailed description of the several exemplary embodiments of the connecting device 100 proposed by the present disclosure, the following will describe an exemplary embodiment of the battery device proposed by the present disclosure.

[0104] Referring to Figure 12 , a partial enlarged view of the battery device proposed by the present disclosure is representatively shown. In this exemplary embodiment, the battery device proposed by the present disclosure is described by taking a vehicle-mounted power battery as an example. It is easy for those skilled in the art to understand that various modifications, additions, substitutions, deletions or other changes can be made to the following specific embodiments in order to apply the relevant designs of the present disclosure to other types of battery devices, and these changes are still within the scope of the principles of the battery device proposed by the present disclosure.

[0105] Referring to Figure 13 and Figure 14 , Figure 13 , a top view of Figure 12 is representatively shown in Figure 14 , a partial enlarged view of Figure 13a cross-sectional view taken along the straight line D-D in FIG. 1. The structure, connection mode and functional relationship of the main components of the battery device proposed by the present disclosure will be described in detail below in combination with the above-described drawings.

[0106] As shown in FIG. 1, Figure 12 and Figure 13 in an embodiment of the present disclosure, the battery device proposed by the present disclosure comprises a battery box and the connection device 100 proposed by the present disclosure and described in detail in the above-described embodiments. The battery box is used to accommodate the battery cells 410, and the connection device 100 is arranged in the battery box.

[0107] As shown in FIG. 1, Figures 12 to 14 in an embodiment of the present disclosure, the battery device proposed by the present disclosure comprises a battery pack 400 comprising a plurality of battery cells 410 arranged along a third direction (for example, the direction D3 shown in the drawings). The battery box is provided with a longitudinal beam 310 extending along the third direction. On this basis, the connection device 100 can be arranged on the longitudinal beam 310, that is, the bracket structure 110 is connected to the longitudinal beam 310 and located at the end of the longitudinal beam 310.

[0108] As shown in FIG. 1, Figure 12 and Figure 13 the battery device proposed by the present disclosure can comprise two battery packs 400, which are respectively located on both sides of the longitudinal beam 310 in a fourth direction (for example, the direction D4 shown in the drawings), and the fourth direction is perpendicular to the third direction. On this basis, the two battery packs 400 located on both sides of the longitudinal beam 310 are respectively connected to the first main connection row 210 and the second main connection row 220. For example, each battery cell 410 belonging to the same battery pack 400 has an outgoing structure (not shown in the drawings) through series and parallel connection, the first main connection row 210 comprises a first sub-connection row 211, the second main connection row 220 comprises a second sub-connection row 221, one end of each of the first sub-connection row 211 and the second sub-connection row 221 is respectively connected to the connection device 100, and the other end of each of the first sub-connection row 211 and the second sub-connection row 221 is respectively connected to the outgoing structure of the two battery packs 400.

[0109] As shown in FIG. 1, Figures 12 to 14 based on the design that the connection device 100 is arranged on the longitudinal beam 310, in an embodiment of the present disclosure, the arrangement direction of the first groove 1102 and the second groove 1103 of the bracket structure 110 can be the same as the extension direction of the longitudinal beam 310, for example, the direction D3 shown in the drawings (in other words, in the present embodiment, Figures 1 to 5 the direction D1 shown in FIG. 1 can be parallel to Figures 12 to 14 the direction D3 shown in FIG. 1).

[0110] As shown in FIG. 1, Figure 12 and Figure 13 while referring toFigure 5 In an embodiment of the present disclosure, the battery device includes a battery pack 400 including a plurality of battery cells 410 arranged along a third direction, which can be direction D3 in the drawings. A longitudinal beam 310 is arranged in the battery case, extending along the third direction and located at the side of the battery pack 400 in a fourth direction perpendicular to the third direction, which can be direction D4 in the drawings. The longitudinal beam 310 has a first portion and a second portion arranged along the third direction, the first portion being the portion of the longitudinal beam 310 that has a projection overlap with the battery pack 400, and the second portion being the portion of the longitudinal beam 310 that has no projection overlap with the battery pack 400. On this basis, the support structure 110 can be connected to the longitudinal beam. Wherein the first slot 1102 (or the first frame body 1104 of the support structure 110) is located at the first portion of the longitudinal beam 310, and the second slot 1103 (or the second frame body 1105 of the support structure 110) is located at the second portion of the longitudinal beam 310, and the first direction is parallel to the third direction, for example, direction D1 and direction D3 shown in the drawings. Through the above design, the present disclosure utilizes the intersecting form of the arrangement direction of the connecting pieces of the first and second main connecting rows 210 and 220, which can further reduce the width of the first frame body 1104 in the fourth direction (i.e., the second direction), so that the first portion of the longitudinal beam 310 corresponding to the first frame body 1104 can also be designed in a form smaller in width than the second portion, thereby further reducing the space occupied by the longitudinal beam 310 at the side of the battery pack 400, and further improving the energy density of the battery device.

[0111] Based on the design that the connecting device 100 is arranged on the longitudinal beam 310 of the battery box, in an embodiment of the present disclosure, the battery device proposed by the present disclosure can adopt an upper and lower layered structure. For example, the battery box has a battery compartment for accommodating the battery cell 410 and an electrical compartment located above the battery compartment and at least for accommodating high-voltage devices (such as BDM, etc.). On this basis, the two ends of the first main connecting row 210 extend to the battery compartment and the electrical compartment respectively, and are connected to the battery cell 410 and the high-voltage device respectively. The two ends of the second main connecting row 220 extend to the battery compartment and the electrical compartment respectively, and are connected to the battery cell 410 and the high-voltage device respectively. For example, the two ends of the main connecting row (such as the first main connecting row 210 and the second main connecting row 220) can extend to the upper layer and the lower layer respectively and be connected to the battery part and the high-voltage control part, that is, the connecting device 100 proposed by the present disclosure can serve as a switching structure between the upper and lower layers. Specifically, the middle part of the main connecting row can be connected to the connecting device 100. The so-called middle part refers to any region of the main connecting row except the two end parts. Further, the main connecting row can also adopt a split design, that is, the main connecting row can include two parts. For example, the first main connecting row 210 can include a first sub-connecting row 211 and a first sub-connecting row 212. One end of each of the first sub-connecting row 211 and the first sub-connecting row 212 is connected to the bottom of the first slot 1102 of the support structure 110, the other end of the first sub-connecting row 211 is connected to the battery part, for example, the pole of the battery cell 410, and the other end of the first sub-connecting row 212 is connected to the high-voltage device, for example, the positive interface of the BDU. Similarly, the second main connecting row 220 can include a second sub-connecting row 221 and a second sub-connecting row 222. One end of each of the second sub-connecting row 221 and the second sub-connecting row 222 is connected to the bottom of the second slot 1103 of the support structure 110, the other end of the second sub-connecting row 221 is connected to the battery part, for example, the pole of the battery cell 410, and the other end of the second sub-connecting row 222 is connected to the high-voltage device, for example, the negative interface of the BDU.

[0112] It should be noted that in some other embodiments of the present disclosure, the battery device proposed by the present disclosure can also adopt other structural forms, and is not limited to the above-mentioned upper and lower layered structure. For example, the internal space of the battery box can include a battery compartment and an electrical compartment arranged in the horizontal direction, the battery compartment is used to accommodate the battery part (i.e. the battery pack 400, the battery cell 410), and the electrical compartment is used to accommodate electrical components including the high-voltage control part (such as BDU, etc.). Among them, a partition beam can be arranged in the battery box, which is located between the battery compartment and the electrical compartment and is used to separate the two compartment bodies. On this basis, the connecting device 100 can also be arranged on the partition beam of the battery box, of course, it can also be arranged on other structures such as the longitudinal beam 310.

[0113] like Figure 12 As shown, in one embodiment of this disclosure, a pressure relief mechanism 411 may be provided on one side of the cell 410 facing the connection device 100. Of course, in some embodiments, pressure relief mechanisms 411 may also be provided on other sides of the cell 410. For example, the battery device proposed in this disclosure includes a battery pack 400, which includes a plurality of cells 410 arranged along a third direction (e.g., direction D3 shown in the figures). A longitudinal beam 310 is provided in the battery housing, extending along the third direction. A support structure 110 is connected to the longitudinal beam 310. Based on this, a pressure relief mechanism 411 may be provided on the side of the cell 410 parallel to the third direction and facing the connection device 100. On a reference plane parallel to the side, the orthographic projection of the pressure relief mechanism 411 at least partially overlaps with the orthographic projection of the connection device 100. Through the above design, the battery device proposed in this disclosure adopts a design in which the pressure relief mechanism 411 of part of the cell 410 is arranged towards the connecting device 100. When the cell 410 experiences thermal runaway, the pressure relief mechanism 411 releases pressure, and the ejected hot flow will directly impact the connecting device 100. In this regard, since the connecting device 100 adopts the design of the heat insulation layer 120, the high temperature resistance of the connecting device 100 can be improved, thereby enabling the connecting device 100 to withstand the impact of the pressure relief mechanism 411 during thermal runaway. This makes it possible for the battery device to adopt the above-mentioned more compact structural arrangement, which is beneficial to improving the energy density of the battery device. Furthermore, when a heat insulation layer 120 is also provided on part of the side of the support structure 110, for example, when the side of the support structure 110 facing the pressure relief mechanism 411 (i.e., the side perpendicular to direction D4 and parallel to direction D3 shown in the figure) is provided with a heat insulation layer 120, this disclosure can further improve the high temperature resistance of the relevant positions of the connecting device 100. In some other embodiments of this disclosure, the orthographic projection of the pressure relief mechanism 411 and the orthographic projection of the connecting device 100 on the aforementioned reference plane may not overlap at all. Since the heat flow is ejected in a cone-shaped dispersion manner when the pressure relief mechanism 411 releases pressure, the high-temperature material ejected at this time may still splash onto the heat insulation layer 120 provided on the connecting device 100.

[0114] In an embodiment of the present disclosure, the battery pack can include a cover plate and a battery tray, the cover plate being arranged on the top of the battery tray and closing the top opening of the battery tray. Specifically, the battery tray can be arranged on the bottom of the vehicle body floor, and the vehicle body floor can serve as the cover plate of the battery pack to close the top opening of the battery tray. For example, the top of the battery tray can be connected with the vehicle body floor, and such a structure of the battery device can refer to a CTB (Cell to Body) battery structure. In the CTB battery device, the cells 410 are stacked to fill a layer of space, and the pressure relief mechanism 411 of the cell 410 is close to the high-voltage connection row. The connection device 100 according to the present disclosure can take into account the requirements of thermal runaway and insulation performance, and further improve the space utilization on this basis. In other embodiments of the present disclosure, the battery device according to the present disclosure can also adopt other structures. For example, the top opening of the battery tray can be provided with a separate cover plate facing the vehicle body floor. For example, the cover plate can be connected with the vehicle body floor, and such a structure of the battery device can refer to a CTP (Cell to Pack) battery structure. For another example, the top surface of the vehicle body floor can be provided with a recess, which can serve as a battery tray, and the groove opening of the recess (i.e. the top opening of the battery tray) can be provided with a separate cover plate or use the vehicle floor as a cover plate. Such a structure of the battery device can refer to a CTC (Cell to Chassis) battery structure. It should be understood that in various possible embodiments consistent with the design concept of the battery device according to the present disclosure, the battery device according to the present disclosure can be applied to any kind of battery device and the structure type of the battery pack specifically adopted by the battery device, which is not limited to the above-mentioned embodiments.

[0115] It should be noted that the battery device shown in the drawings and described in the specification is only a few examples of many kinds of battery devices that can adopt the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details or any components of the battery device shown in the drawings or described in the specification.

[0116] Based on the above detailed description of an exemplary embodiment of the battery device according to the present disclosure, an exemplary embodiment of the vehicle according to the present disclosure will be described below.

[0117] In an embodiment of the present disclosure, the vehicle according to the present disclosure includes the battery device according to the present disclosure and in the above-mentioned embodiments.

[0118] In an embodiment of the present disclosure, the vehicle can be a hybrid vehicle, an electric vehicle, a fuel cell vehicle, or other types of vehicles. The vehicle can be an autonomous vehicle, a semi-autonomous vehicle, or a non-autonomous vehicle.

[0119] It should be borne in mind, that the vehicle shown in the drawings and described herein is merely a few examples of the many vehicles that can employ the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are in no way limited to any one or a combination of any of the vehicles shown in the drawings or described herein.

[0120] In summary, the technical scheme provided by the embodiments of the present disclosure can have the following beneficial effects: the connecting device 100 proposed by the present disclosure comprises a support structure 110; the support structure 110 is made of insulating material; the first connecting surface 1101 of the support structure 110 is provided with a first groove 1102 and a second groove 1103, the first main connecting row 210 is connected to the groove bottom of the first groove 1102, and the second main connecting row 220 is connected to the groove bottom of the second groove 1103; the first groove 1102 and the second groove 1103 are respectively delimited by the groove wall 111 protruding from the first connecting surface 1101, and at least part of the groove wall 111 is shared between the first groove 1102 and the second groove 1103. Through the above design, the present disclosure can increase the creepage distance by using the groove wall 111, improve the insulation isolation effect of the first connecting surface 1101 between the two regions of the first groove 1102 and the second groove 1103, and improve the insulation isolation effect between the connecting row connection position and the edge region of the support structure 110, thereby avoiding insulation failure. Accordingly, when the arrangement form of the first main connecting row 210 and the second main connecting row 220 on the connecting device 100 is relatively compact, or when the connecting device 100 is relatively close to other live structures (such as the battery cell 410, etc.) in the battery device, the insulation failure problem can be avoided, thereby ensuring the safety of the battery device on the basis of improving the space utilization of the battery device.

[0121] Furthermore, the word "example" is used herein to mean serving as an example, instance, or illustration. Any implementation described herein as "example" is not necessarily to be construed as preferred or advantageous over other implementations. Rather, use of the word "example" is intended to present concepts in a concrete manner. As used in this application, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless specified otherwise, or clear from context, "X employs A or B" is intended to mean any of the natural inclusive permutations. That is, if X employs A; X employs B; or X employs both A and B, then "X employs A or B" is satisfied under any of the foregoing instances. In addition, the articles "a" and "an" as used in this application and the appended claims should generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form. Thus, use of the articles in this application and the following claims is not limiting.

[0122] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding the specification and drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0123] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0124] It should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein according to the specific circumstances.

[0125] Although terms such as "first" and "second" can be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to the terms. Rather, the terms are only used to distinguish one component, part, region, layer or section from another component, part, region, layer or section. Thus, the first component, part, region, layer or section mentioned in the examples described herein can also be called the second component, part, region, layer or section without departing from the teachings of the examples. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description herein, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0126] It should be understood that spatially relative terms, such as "above", "upper", "below", and "lower", are used herein for ease of description to describe the relationships of one element to another element, as drawn in the figures. Unless otherwise specifically stated, these spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, so that the element described as above other elements would now be below those other elements, then the term "above" can encompass both orientations of the element. Accordingly, the spatially relative terms are used herein only to facilitate the description of the drawings, and are in no way limiting of the scope of the application. Thus, a device or structure can be said to have a spatially relative term to another device or structure, without necessarily being directly connected to or in contact with the other device or structure.

[0127] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the claims appended hereto.

Claims

1. A connection device, characterized in that A battery box for being arranged in a battery device; The connecting device comprises: A bracket structure connected to the battery box and made of insulating material, the bracket structure having a first connecting surface for connecting a first main connecting row and a second main connecting row, the first connecting surface being provided with a first groove and a second groove, the first main connecting row being connected to the groove bottom of the first groove, the second main connecting row being connected to the groove bottom of the second groove, the first main connecting row and the second main connecting row being opposite in polarity; The first groove and the second groove are respectively defined by groove walls protruding from the first connecting surface, and the first groove and the second groove share at least part of the groove walls.

2. The connection device according to claim 1, characterized in that The first main connecting row is connected to the groove bottom of the first groove via at least two first connecting pieces, and the second main connecting row is connected to the groove bottom of the second groove via at least two second connecting pieces; the first connecting pieces are arranged along a first direction parallel to the first connecting surface, and the second connecting pieces are arranged along a second direction parallel to the first connecting surface and intersecting the first direction.

3. The connection device according to claim 2, characterized in that The bracket structure comprises a first bracket body and a second bracket body, the first groove is formed in the part of the first connecting surface located in the first bracket body, and the second groove is formed in the part of the first connecting surface located in the second bracket body; along the second direction, the width of the first bracket body is smaller than the width of the second bracket body; and / or, along the first direction, the width of the first bracket body is greater than the width of the second bracket body.

4. The connection device of claim 2, wherein The first main connecting row comprises two first sub-connecting rows, each first sub-connecting row comprising a first connecting part extending along the first direction, and the first connecting parts of the two first sub-connecting rows at least partially overlap and are commonly connected to the groove bottom of the first groove via the first connecting pieces.

5. The connection device according to claim 4, characterized in that Each first sub-connecting row further comprises a first extension part, the first extension part being connected to the first connecting part by a folding connection, and the first extension parts of the two first sub-connecting rows extend in different directions.

6. The connection device according to claim 5, characterized in that The first groove and the second groove are arranged along the first direction; one first extension part is connected to the end of one first connecting part away from the second groove, and the other first extension part is connected to the side of the other first connecting part close to the end of the second groove; the two first extension parts respectively extend in opposite directions perpendicular to the first connecting surface.

7. The connection device of claim 5, wherein The first extension part of one first sub-connecting row is connected to a high-voltage device, and the first extension part has two parts connected by a folding connection.

8. The connection device of claim 1, wherein The groove walls of the first groove and the second groove are respectively arranged around.

9. The connection device according to claim 8, characterized in that The groove walls are provided with a first notch and a second notch; the first notch is connected to the first groove and is used for the first main connecting row to extend out of the first groove; the second notch is connected to the second groove and is used for the second main connecting row to extend out of the second groove; the first notch and the second notch are not oriented in the same direction.

10. The connection device according to claim 9, characterized in that The first slot and the second slot are arranged along a first direction, which is parallel to the first connecting surface; wherein the first notch and the second notch are respectively towards opposite sides in a second direction, which is parallel to the first connecting surface and perpendicular to the first direction.

11. The connection device according to claim 10, characterized in that In a reference plane parallel to the first connecting surface, a projection of the slot wall is in an "S" shape.

12. The connection device of claim 8, wherein, The connecting device further comprises: a first protective cover, which is detachably connected to the slot wall of the first slot and is above at least part of the slot opening of the first slot; and / or a second protective cover, which is detachably connected to the slot wall of the second slot and is above at least part of the slot opening of the second slot.

13. The connection device of claim 1, wherein, The connecting device further comprises: a heat insulation layer, which is arranged on at least one side of the slot wall and is made of insulating material.

14. The connection device according to claim 13, characterized in that The heat insulation layer is further arranged on at least one side of the support structure.

15. The connecting device according to claim 13, wherein: the heat insulation layer is a ceramic composite tape; and / or the thickness of the heat insulation layer is 0.3mm-1.5mm.

16. A battery device characterized by comprising: comprises: a battery box for accommodating the battery cell; the connecting device according to any one of claims 1-15, wherein the support structure is connected to the battery box.

17. The battery device of claim 16, wherein, The battery device comprises a battery pack, which comprises a plurality of battery cells arranged along a third direction; a longitudinal beam is arranged in the battery box, which extends along the third direction; wherein the support structure is connected to the longitudinal beam and is located at the end of the longitudinal beam.

18. The battery device of claim 17, wherein, The battery device comprises two battery packs, which are respectively located on both sides of the longitudinal beam in a fourth direction, which is perpendicular to the third direction; wherein the two battery packs located on both sides of the longitudinal beam are respectively connected to a first main connecting row and a second main connecting row.

19. The battery device of claim 17, wherein, The support structure comprises a first frame body and a second frame body, the first slot is located on the part of the first connecting surface located in the first frame body, and the second slot is located on the part of the first connecting surface located in the second frame body; wherein along a fourth direction perpendicular to the third direction, the width of the first frame body is smaller than the width of the second frame body; the first frame body is located on the part of the longitudinal beam which has a projection overlap with the battery pack, and the second frame body is located on the part of the longitudinal beam which has no projection overlap with the battery pack.

20. The battery device of claim 16, wherein, The side of the battery cell facing the connecting device is provided with a pressure relief mechanism.

21. The battery device of claim 16, wherein, The battery box has a battery compartment for accommodating the battery cell and an electrical compartment located above the battery compartment and at least for accommodating high-voltage devices; wherein the two ends of the first main connecting row respectively extend to the battery compartment and the electrical compartment and are respectively connected to the battery cell and the high-voltage device, and the two ends of the second main connecting row respectively extend to the battery compartment and the electrical compartment and are respectively connected to the battery cell and the high-voltage device.

22. A vehicle characterized by The vehicle comprises the battery device according to any one of claims 16-21.

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