arrangement

Abstract

An arrangement according to one embodiment comprises: a device unit with a device having a first installation surface and a device busbar having a first extension section extending in contact with the first installation surface and a first connecting section extending continuously from the first extension section;and a battery unit comprising a battery pack having a second installation surface facing the first installation surface, and a battery busbar having a second extension section extending in contact with the second installation surface, and a second connection section extending continuously from the second extension section and connectable to the first connection section, in which a gap is formed, at least one between the first installation surface and the first connection section and between the second installation surface and the second connection section.

Description

BACKGROUND OF THE INVENTION Area of ​​the invention

[0001] Embodiments of the present invention relate to an arrangement. Description of related techniques

[0002] It is generally known that a battery unit is connected to a device as a power supply source. For example, Japanese Unexamined Patent Application, First Publication No. 2018-144524, discloses that a battery module is connected to a fuse / contactor unit of an electric vehicle. SUMMARY OF THE INVENTION

[0003] In an arrangement disclosed in Japanese Unexamined Patent Application, First Publication No. 2018-144524, a plug-side power supply connection section, arranged in a battery module, is attached to and detached from each of a plurality of socket-side power pickup connection sections connected to a fuse / contactor unit. However, with such a connection structure using the connection sections, the contact pressure between connection sections cannot be ensured in some cases.

[0004] One embodiment of the present invention provides an arrangement that easily ensures contact pressure between connecting sections.

[0005] An arrangement according to an embodiment of the present invention comprises: a device unit with a device having a first installation surface and a device busbar having a first extension section extending in contact with the first installation surface and a first connecting section extending continuously from the first extension section;and a battery unit comprising a battery pack having a second installation surface facing the first installation surface, and a battery busbar having a second extension section extending in contact with the second installation surface, and a second connection section extending continuously from the second extension section and connectable to the first connection section, in which a gap is formed, at least one between the first installation surface and the first connection section and between the second installation surface and the second connection section.

[0006] According to an arrangement of an embodiment of the present invention, it is easy to ensure a contact pressure between connection sections. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a front view of an arrangement in front of a fastening, according to each of embodiments. Fig. 2 is a cross-sectional view of an arrangement in front of a fastening according to a first embodiment, along line II-II in Fig. 1 taken. Fig. 3 is a cross-sectional view of the arrangement after fastening according to the first embodiment, along line II-II in Fig. 1 taken. Fig. 4 is a cross-sectional view of an arrangement in front of a fastening according to a modification of the first embodiment, along line II-II in Fig. 1 taken. Fig. 5 is a cross-sectional view of an arrangement in front of a fastening according to a second embodiment, along line II-II in Fig. 1 taken. Fig. 6 is a cross-sectional view of the arrangement after fastening according to the second embodiment, along line II-II in Fig. 1 taken. Fig. 7 is a cross-sectional view of an arrangement in front of a fastening according to a modification of the second embodiment, along line II-II in Fig. 1 taken. Fig. Figure 8 is a perspective view of an arrangement in front of a fastening according to a modification of each of the embodiments. DETAILED DESCRIPTION OF THE INVENTION<Erste Ausführungsform>

[0007] Below is an arrangement according to one embodiment with reference to Fig. 1 to 4 described. (Configuration of the arrangement)

[0008] As in Fig. As shown in Figure 1, an arrangement 9 of the present embodiment comprises a device unit 1, a battery unit 2, and a fastening material 3. The device unit 1 and the battery unit 2 are fastened by the fastening material 3, thereby unifying the arrangement 9. For example, the arrangement 9 can be mounted on a mobility unit, such as an electric vehicle. (Configuration of the device unit)

[0009] The device unit 1 comprises a device 11, a plurality of device busbars 12 and a flange section 13. (Device)

[0010] The device 11 receives energy from the battery unit 2. For example, the device 11 can be a high-voltage device such as a high-voltage junction box (J / B), an on-board charger (OBC), or a DC-DC converter. The device 11 has a first installation surface 111 on one side facing the battery unit 2.

[0011] Below, a direction parallel to the direction in which the first installation surface 111 faces is referred to as a Z-direction. Directions that intersect each other in a plane facing the Z-direction are defined as an X-direction and a Y-direction. For example, the X-direction, the Y-direction, and the Z-direction can be directions that are orthogonal to each other. For example, the Z-direction can be an "up-down" direction. For example, the first installation surface 111 can be a downward-facing plane.

[0012] The first installation surface 111 is an insulating surface made of an insulating material. For example, the first installation surface 111 can be a housing with insulating properties, a cover that has partial insulating properties, or the like. (Device busbar)

[0013] The majority of the device busbars 12 are connected to the device 11. In particular, the device busbars 12 are electrically connected to an electrode contained in the device 11.

[0014] The majority of the device busbars 12 are arranged side by side in the X-direction on the first installation surface 111. As shown in Fig. As shown in Figure 2, each of the device busbars 12 comprises a first extension section 121 and a first connection section 122. The device busbar 12 is made of a conductive material, such as metal.

[0015] For example, the first extension section 121 and the first connection section 122 are formed from an integrated flat metal plate. For example, each of the device busbars 12 can have a constant thickness from the first extension section 121 to the first connection section 122. For example, each of the device busbars 12 can have a plate shape with a pair of surfaces facing the Z-direction, and the pair of surfaces of each of the device busbars 12 can extend from the first extension section 121 to the first connection section 122 in the Y-direction.

[0016] The first extension section 121 extends in the Y direction in contact with the first installation surface 111. The first connection section 122 extends continuously from the first extension section 121 further in the Y direction in contact with the first installation surface 111. The first connection section 122 has a first contact surface 122a on one side facing the battery unit 2. For example, the first contact surface 122a can be a plane. (Flange section)

[0017] The flange section 13 is integrally formed with the device 11. The flange sections 13 project from the device 11 to both outer sides of the device 11. The flange sections 13 have a plurality of through holes 13h extending in the Z-direction. The device unit 1 and the battery unit 2 are fastened together by inserting the fastening material 3 into each of the through holes 13h, thereby unifying the device unit 1 and the battery unit 2. (Battery unit configuration)

[0018] The battery unit 2 comprises a battery pack 21 and a plurality of battery busbars 22. In the present embodiment, a structure with a pair of each of the device busbars 12 and the corresponding battery busbar 22 is also referred to as a connecting structure. (Battery pack)

[0019] The battery pack 21 comprises a plurality of battery cells. The battery pack 21 has a second installation surface 211 on one side facing the device unit 1. The second installation surface 211 faces the first installation surface 111. For example, the second installation surface 211 can be a plane facing upwards.

[0020] The battery pack 21 has a screw hole 21h in the second installation surface 211. The fastening material 3, which is inserted into the through hole 13h, is screwed into the screw hole 21h.

[0021] The second installation surface 211 is an insulating surface made of an insulating material. For example, the second installation surface 211 can be a housing with insulating properties, a cover that has partial insulating properties, or the like. (Battery busbar)

[0022] The majority of battery busbars 22 are electrically connected to the battery pack 21. In particular, the majority of battery busbars 22 are electrically connected to electrodes of a majority of battery cells contained in the battery pack 21.

[0023] The majority of battery busbars 22 are arranged side by side in the X direction on the second installation surface 211. Each battery busbar 22 is positioned facing the corresponding device busbar 12. Each battery busbar 22 comprises a second extension section 221 and a second connection section 222. The battery busbar 22 is made of a conductive material, such as metal.

[0024] For example, the second extension section 221 and the second connection section 222 are formed from an integrated metal plate with a shape in which a flat plate is bent in the middle. For example, each of the battery busbars 22 from the second extension section 221 to the second connection section 222 can have a constant thickness.For example, each of the battery busbars 222 can have a plate shape with a pair of surfaces facing a direction parallel to a YZ plane; in other words, the pair of surfaces of each of the battery busbars 22 is orthogonal to the YZ plane, and the pair of surfaces of each of the battery busbars 22 can extend from the second extension section 221 to the second connection section 222 while bent, such that the pair of surfaces of each of the battery busbars 22 maintains a state that faces the direction parallel to the YZ plane; in other words, a state in which the pair of surfaces of each of the battery busbars 22 is orthogonal to the YZ plane.

[0025] The second extension section 221 extends in the Y direction into contact with the second installation surface 211. The second connection section 222 extends continuously from the second extension section 221 further in the Y direction. The second connection section 222 can be connected to the first connection section 122 by coming into contact with the corresponding first connection section 122. The second connection section 222 is positioned overlapping the corresponding first connection section 122 when viewed from the Z direction. A gap AA is formed between the second connection section 222 and the second installation surface 211.

[0026] The second connecting section 222 comprises a second contact section 2221 and a second deformation section 2222 in that order, extending from a tip end of the second connecting section 222 towards the second extension section 221. The second contact section 2221 and the second deformation section 2222 are continuous with each other. In the present embodiment, a gap AA is formed between the second contact section 2221 and the second installation surface 211, extending from a tip end of the second contact section 2221 to the second deformation section 2222.

[0027] The second contact section 2221 has a second contact surface 2221a, which faces the corresponding first contact surface 122a, on one side facing the device unit 1. For example, the second contact surface 2221a can be a plane.

[0028] The second deformation section 2222 connects the second extension section 221 and the second contact section 2221. The second deformation section 2222 is elastically deformable with respect to a pressing force that the second contact surface 2221a receives from the first contact surface 122a.

[0029] The “second deformation section” is defined below as a “section that allows deformation in respect of a pressing force which the second contact surface receives from the first contact surface”.

[0030] In the present embodiment, the second deformation section 2222 is bent and extends from the second extension section 221 towards the second contact section 2221. The second deformation section 2222 is bent and extends in an obliquely upward direction, forming an acute angle with respect to the direction (the Y-direction) in which the second extension section 221 extends towards the second contact section 2221. In other words, the second deformation section 2222 connects the second extension section 221 and the second contact section 2221 to extend in a direction away from the second installation surface 211.The second deformation section 2222 is bent and extends in an obliquely upward direction, forming an acute angle with respect to the second installation surface 211 from the second extension section 221 towards the second contact section 2221. With such a second deformation section 2222, each of the battery busbars 22 is configured such that the second connection section 222 extends further forward from one end of the extension of the second extension section 221. (Fastening material)

[0031] A plurality of the fastening materials 3 fasten the device unit 1 and the battery unit 2 to each other. For example, each of the fastening materials 3 can be a bolt that is to be fastened through the through hole 13h to the screw hole 21h.

[0032] As in Fig. As shown in Figure 3, during the assembly of the arrangement 9, for example, when the device unit 1 is attached to the battery unit 2 by the fastening materials 3 in order to bring the device unit 1 close to the battery unit 2, the second contact surface 2221a comes into contact with the first contact surface 122a. As the device unit 1 is further fastened, the second contact surface 2221a receives a downward pressing force from the first contact surface 122a.

[0033] Since the gap AA is formed between the second connection section 222 and the second installation surface 211, the second contact section 2221, which has received the pressing force, elastically deforms the second deformation section 2222, while the gap AA decreases. Conversely, the elastically deformed second deformation section 2222 can apply a preload force towards the first contact surface 122a to the second contact section 2221. Due to this deformation and preload force, in the assembly 9, after it is assembled, the second connection section 222 can come into contact with the first connection section 122, while the pressing force from the first connection section 122 is absorbed through the gap AA. (Operation and effect of the invention)

[0034] According to arrangement 9 of the present embodiment, the second connecting section 222 can come into contact with the first connecting section 122, while the pressing force from the first connecting section 122 is absorbed by the gap AA. With such contact, arrangement 9 can absorb a manufacturing tolerance with respect to a connection between the first connecting section 122 and the second connecting section 222, which is likely to occur during the assembly of the device unit and the battery pack. Therefore, arrangement 9 of the present embodiment easily ensures contact pressure between the first connecting section 122 and the second connecting section 222.

[0035] For example, the arrangement 9 can absorb a tolerance with respect to a dimensional error, a mounting pressure error, or the like between many different structures with respect to a contact between the first connection section 122 and the second connection section 222 for the plurality of arrangements 9 with different lots. For example, the arrangement 9 can absorb a tolerance with respect to a dimensional error between the plurality of device busbars 12, a dimensional error between the plurality of battery busbars 22, or the like for an arrangement 9. For example, the arrangement 9 can absorb a tolerance with respect to a deviation in contact pressure that is generated due to a non-uniformity of the mounting pressure, that is, the deviation in contact pressure across the plurality of first connection sections 122 and the plurality of second connection sections 222 for an arrangement 9.

[0036] As a comparative example, consider the structure of an arrangement in which a connector is located within a battery pack, and a vehicle body-side connector and a battery-side connector are joined together when the battery pack is attached to a vehicle body, as in the Japanese Unexamined Patent Application, First Publication No. 2018-144524. With such a structure in the comparative example, if there are multiple connection sections, a proper fit of each connector cannot be confirmed; thus, a partially fitted connector may occur, a very large insertion force may be required at the time of a collective connection, or component costs may be high.

[0037] In contrast to this comparative example, in the present embodiment, the arrangement 9 has a structure in which the second connecting section 222 can come into contact with the first connecting section 122, while the pressing force from the first connecting section 122 is absorbed by the gap AA. With this structure, even if there are multiple connecting sections, it is easy to ensure contact pressure between each of the first connecting sections 122 and the corresponding second connecting section 222, while keeping the fastening pressure and the number of components low.

[0038] In particular, if the device 11 is a high-voltage device, an electrical connection between the device unit 1 and the battery unit 2 is increased, which becomes a connection between busbars, and thus it is effective in ensuring the contact pressure between the first connection section 122 and the second connection section 222, as in the present embodiment.

[0039] Furthermore, according to an example of arrangement 9 of the present embodiment, since the second connecting section 222 has the second deformation section 2222, arrangement 9 has a structure in which the second deformation section 2222 is more likely to be deformed than the second contact section 2221. According to such a structure, the second contact section 2221 can apply a preload force in the direction of the first connecting section 122, while the second contact section 2221 itself is hardly deformed. Therefore, arrangement 9 of the present embodiment can stabilize a contact between the first connecting section 122 and the second connecting section 222.

[0040] Furthermore, according to an example of arrangement 9 of the present embodiment, each of the battery busbars 22 is configured such that the second connecting section 222 extends further forward from one end of the extension of the second extension section 221. According to such a configuration, the second contact section 2221 can apply a preload force in the direction of the first connecting section 122, while having a structure in which the second connecting section 222 is easily processed and the second contact section 2221 itself is hardly deformed. (Modification of the split position)

[0041] In the present embodiment, the gap AA is formed between the second connection section 222 and the second installation surface 211. It should be noted that it is not limited to such a position, and the gap AA can be formed at any position as long as the gap AA can absorb a pressing force between the second connection section 222 and the first connection section 122. As a modification, the gap AA can be formed between the first connection section and the first installation surface. As this modification, as shown in Fig. As shown in Figure 4, each of the device busbars 12 can have a first connection section 123 instead of the first connection section 122. Conversely, each of the battery busbars 22 can have a second connection section 223 instead of the second connection section 222.

[0042] That is, in the present modification, each of the battery busbars 22 comprises the second extension section 221 and the second connection section 223. The second connection section 223 extends continuously from the second extension section 221 further in the Y-direction in contact with the second installation surface 211. The second connection section 223 has a second contact surface 223a on one side facing the device unit 1. For example, the second contact surface 223a can be a plane.

[0043] Furthermore, in the present modification, each of the device busbars 12 comprises the first extension section 121 and the first connection section 123. The first connection section 123 extends continuously from the first extension section 121 in the Y-direction. The first connection section 123 can be connected to the second connection section 223 by coming into contact with the corresponding second connection section 223. The first connection section 123 is arranged in a position that overlaps with the corresponding second connection section 223 when viewed from the Z-direction. A gap AA is formed between the first connection section 123 and the first installation surface 111.

[0044] The first connecting section 123 comprises a first contact section 1231 and a first deformation section 1232 in that order, extending from a tip end of the first connecting section 123 towards the first extension section 121. The first contact section 1231 and the first deformation section 1232 are continuous with each other. In the present modification, the gap AA between the first contact section 1231 and the first installation surface 111, and between the first connecting section 123 and the first installation surface 111, is formed to extend from a tip end of the first contact section 1231 to the first deformation section 1232.

[0045] The first contact section 1231 has a first contact surface 1231a, which faces the corresponding second contact surface 223a, on a side facing the battery unit 2. For example, the first contact surface 1231a can be a plane.

[0046] The first deformation section 1232 connects the first extension section 121 and the first contact section 1231. The first deformation section 1232 is elastically deformable with respect to a pressing force that the first contact surface 1231a receives from the second contact surface 223a.

[0047] The “first deformation section” is defined below as a “section that allows deformation in respect of a pressing force which the first contact surface receives from the second contact surface”.

[0048] In the present modification, the first deformation section 1232 is bent and extends from the first extension section 121 towards the first contact section 1231. The first deformation section 1232 is bent and extends in a downward oblique direction, forming an acute angle with respect to the direction (the Y-direction) in which the first extension section 121 extends towards the first contact section 1231. In other words, the first deformation section 1232 connects the first extension section 121 and the first contact section 1231 to extend in a direction away from the first installation surface 111.The first deformation section 1232 is bent and extends in a downward oblique direction, forming an acute angle with respect to the first installation surface 111 from the first extension section 121 towards the first contact section 1231. With such a first deformation section 1232, each of the device busbars 12 is configured such that the first connection section 123 extends further forward from one end of the extension of the first extension section 121.

[0049] According to arrangement 9 of the present modification, the first connecting section 123 can come into contact with the second connecting section 223, while the pressing force from the second connecting section 223 is absorbed by the gap AA. With such contact, arrangement 9 can absorb a manufacturing tolerance with respect to a connection between the first connecting section 123 and the second connecting section 223, which is likely to occur during the assembly of the device unit and the battery pack. Therefore, arrangement 9 of the present modification simply ensures contact pressure between the first connecting section 123 and the second connecting section 223.

[0050] Furthermore, according to an example of arrangement 9 of the present modification, since the first connecting section 123 has the first deformation section 1232, arrangement 9 has a structure in which the first deformation section 1232 is more likely to deform preferentially than the first contact section 1231. According to such a structure, the first contact section 1231 can apply a preload force in the direction of the second connecting section 223, while the first contact section 1231 itself is hardly deformed. Therefore, contact between the first connecting section 123 and the second connecting section 223 can be stabilized.

[0051] Furthermore, according to an example of arrangement 9 of the present modification, each of the device busbars 12 is configured such that the first connecting section 123 extends further forward from one end of the extension of the first extension section 121. According to such a configuration, the first contact section 1231 can apply a preload force in the direction of the second connecting section 223, while having a structure in which the first connecting section 123 is easily processed and the first contact section 1231 itself is hardly deformed. <Zweite Ausführungsform>

[0052] Below is an arrangement according to one embodiment with reference to Fig. 5 to 7 described. The arrangement of the present embodiment has a similar configuration, is assembled in a similar manner, and has a similar operation and effect to the arrangement of the first embodiment, with the exception of the following points.

[0053] As in Fig. As shown in Figure 5, in the present embodiment each of the battery busbars 22 comprises a second extension section 221 and a second connection section 224. For example, the second extension section 221 and the second connection section 224 are formed from an integrated metal plate having a shape in which a flat plate is bent in the middle. For example, each of the battery busbars 22 can have a constant thickness from the second extension section 221 to the second connection section 224.For example, each of the battery busbars 22 can have a plate shape with a pair of surfaces facing a direction parallel to a YZ plane; in other words, the pair of surfaces of each of the battery busbars 22 is orthogonal to the YZ plane, and the pair of surfaces of each of the battery busbars 22 can extend from the second extension section 221 to the second connection section 224 while bent, such that the pair of surfaces of each of the battery busbars 22 maintains a state that faces the direction parallel to the YZ plane; in other words, a state in which the pair of surfaces of each of the battery busbars 22 is orthogonal to the YZ plane.

[0054] The second connecting section 224 can be connected to the first connecting section 122 by coming into contact with the corresponding first connecting section 122. The second connecting section 224 is arranged in a position that overlaps with the corresponding first connecting section 122 when viewed from the Z-direction. A gap AA is formed between the second connecting section 224 and the second installation surface 211.

[0055] The second connecting section 224 comprises a second contact section 2241 and a second deformation section 2242 in that order, extending from a tip end of the second connecting section 224 towards the second extension section 221. The second contact section 2241 and the second deformation section 2242 are continuous with each other. In the present embodiment, the gap AA between the second contact section 2241 and the second extension section 221, between the second connecting section 224 and the second installation surface 211, is configured to extend from a tip end of the second contact section 2241 to the second deformation section 2242.

[0056] The second contact section 2241 has a second contact surface 2241a, which faces the corresponding first contact surface 122a, on one side facing the device unit 1. For example, the second contact surface 2241a can be a plane.

[0057] The second deformation section 2242 connects the second extension section 221 and the second contact section 2241. The second deformation section 2242 is elastically deformable with respect to a pressing force that the second contact surface 2241a receives from the first contact surface 122a.

[0058] In the present embodiment, the second deformation section 2242 is bent and extends from the second extension section 221 towards the second contact section 2241. The second deformation section 2242 is bent and extends in an obliquely upward direction, forming an acute angle with respect to the direction (the Y-direction) in which the second extension section 221 extends towards the second contact section 2241. In other words, the second deformation section 2242 connects the second extension section 221 and the second contact section 2241 to extend in a direction away from the second installation surface 211.The second deformation section 2242 is bent and extends in an obliquely upward direction, forming an acute angle with respect to the second installation surface 211 from the second extension section 221 towards the second contact section 2241. With such a second deformation section 2242, each of the battery busbars 22 is configured such that the second connection section 224 extends by folding back from one end of the extension of the second extension section 221.

[0059] As in Fig. As shown in Figure 6, during the assembly of the arrangement 9, for example when the device unit 1 is attached to the battery unit 2 by the fastening materials 3 in order to bring the device unit 1 close to the battery unit 2, the second contact surface 2241a comes into contact with the first contact surface 122a. As the device unit 1 is further fastened, the second contact surface 2241a receives a downward pressing force from the first contact surface 122a.

[0060] Since the gap AA is formed between the second connecting section 224 and the second extension section 221, the second contact section 2241, which has received the pressing force, elastically deforms the second deformation section 2242, while the gap AA decreases. Conversely, the elastically deformed second deformation section 2242 can apply a preload force towards the first contact surface 122a to the second contact section 2241. Due to this deformation and preload force, in the assembly 9, after it is assembled, the second connecting section 224 can come into contact with the first connecting section 122, while the pressing force from the first connecting section 122 is absorbed through the gap AA. (Operation and effect of the invention)

[0061] According to arrangement 9 of the present embodiment, the second connecting section 224 can come into contact with the first connecting section 122, while the pressing force from the first connecting section 122 is absorbed by the gap AA. With such contact, arrangement 9 can absorb a manufacturing tolerance with respect to a connection between the first connecting section 122 and the second connecting section 224, which is likely to occur during the assembly of the device unit and the battery pack. Therefore, arrangement 9 of the present embodiment simply ensures contact pressure between the first connecting section 122 and the second connecting section 224.

[0062] Furthermore, according to an example of the arrangement 9 of the present embodiment, since the second connecting section 224 has the second deformation section 2242, the arrangement 9 has a structure in which the second deformation section 2242 is more likely to be deformed than the second contact section 2241. According to such a structure, the second contact section 2241 can apply a preload force in the direction of the first connecting section 122, while the second contact section 2241 itself is hardly deformed. Therefore, the arrangement 9 of the present embodiment can stabilize a contact between the first connecting section 122 and the second connecting section 224.

[0063] Furthermore, according to an example of arrangement 9 of the present embodiment, each of the battery busbars 22 is configured such that the second connecting section 224 extends by folding back from one end of the extension of the second extension section 221. According to such a configuration, the second contact section 2241 can apply a preload force in the direction of the first connecting section 122, while having a structure in which the second connecting section 224 is compactly accommodated with respect to the second extension section 221 and the second contact section 2241 itself is hardly deformed. (Modification of the split position)

[0064] In the present embodiment, the gap AA is formed between the second connecting section 224 and the second extension section 221. It should be noted that it is not limited to such a position, and the gap AA can be formed at any position as long as the gap AA can absorb a pressing force between the second connecting section 224 and the first connecting section 122. As a modification, the gap AA can be formed between the first connecting section and the first extension section. As this modification, as in Fig. As shown in Figure 7, each of the device busbars 12 can have a first connection section 125 instead of the first connection section 122. Conversely, each of the battery busbars 22 can have a second connection section 225 instead of the second connection section 224.

[0065] That is, in the present modification, each of the battery busbars 22 comprises the second extension section 221 and the second connection section 225. For example, the second extension section 221 and the second connection section 225 are formed from an integrated flat metal plate. For example, each of the battery busbars 22 can have a constant thickness from the second extension section 221 to the second connection section 225. For example, each of the battery busbars 22 can have a plate shape with a pair of surfaces facing the Z-direction, and the pair of surfaces of each of the battery busbars 22 can extend from the second extension section 221 to the second connection section 225 in the Y-direction.

[0066] The second connecting section 225 extends continuously from the second extension section 221 further in the Y direction into contact with the second installation surface 211. The second connecting section 225 has a second contact surface 225a on one side facing the device unit 1. For example, the second contact surface 225a can be a plane.

[0067] Furthermore, in the present modification, each of the device busbars 12 comprises a first extension section 121 and a first connection section 125. For example, the first extension section 121 and the first connection section 125 are formed from an integrated metal plate with a shape in which a flat plate is bent in the middle. For example, each of the device busbars 12 can have a constant thickness from the first extension section 121 to the first connection section 125.For example, each of the device busbars 12 can have a plate shape with a pair of surfaces facing a direction parallel to a YZ plane; in other words, the pair of surfaces of each of the device busbars 12 is orthogonal to the YZ plane, and the pair of surfaces of each of the device busbars 12 can extend from the first extension section 121 to the first connection section 125 while curved, such that the pair of surfaces of each of the device busbars 12 maintains a state that faces the direction parallel to the YZ plane; in other words, a state in which the pair of surfaces of each of the device busbars 22 is orthogonal to the YZ plane.

[0068] The first connecting section 125 extends continuously from the first extension section 121. The first connecting section 125 can be connected to the second connecting section 225 by coming into contact with the corresponding second connecting section 225. The first connecting section 125 is positioned overlapping the corresponding second connecting section 225 when viewed from the Z-direction. A gap AA is formed between the first connecting section 125 and a first installation surface 111.

[0069] The first connecting section 125 comprises a first contact section 1251 and a first deformation section 1252 in that order, extending from a tip end of the first connecting section 125 towards the first extension section 121. The first contact section 1251 and the first deformation section 1252 are continuous with each other. In the present modification, the gap AA between the first contact section 1251 and the first extension section 121, between the first connecting section 125 and the first installation surface 111, is formed to extend from a tip end of the first contact section 1251 to the first deformation section 1252.

[0070] The first contact section 1251 has a first contact surface 1251a, which faces the corresponding second contact surface 225a, on a side facing the battery unit 2. For example, the first contact surface 1251a can be a plane.

[0071] The first deformation section 1252 connects the first extension section 121 and the first contact section 1251. The first deformation section 1252 is elastically deformable with respect to a pressing force that the first contact surface 1251a receives from the second contact surface 225a.

[0072] In the present modification, the first deformation section 1252 is bent and extends from the first extension section 121 towards the first contact section 1251. The first deformation section 1252 is bent and extends in a downward oblique direction, forming an acute angle with respect to the direction (the Y-direction) in which the first extension section 121 extends towards the first contact section 1251. In other words, the first deformation section 1252 connects the first extension section 121 and the first contact section 1251 to extend in a direction away from the first installation surface 111.The first deformation section 1252 is bent and extends in a downward oblique direction, forming an acute angle with respect to the first installation surface 111 from the first extension section 121 towards the first contact section 1251. With such a first deformation section 1252, each of the device busbars 12 is configured such that the first connection section 125 extends by folding back from one end of the extension of the first extension section 121.

[0073] According to arrangement 9 of the present modification, the first connecting section 125 can come into contact with the second connecting section 225, while the pressing force from the second connecting section 225 is absorbed by the gap AA. With such contact, arrangement 9 can absorb a manufacturing tolerance with respect to a connection between the first connecting section 125 and the second connecting section 225, which is likely to occur during the assembly of the device unit and the battery pack. Therefore, arrangement 9 of the present modification simply ensures contact pressure between the first connecting section 125 and the second connecting section 225.

[0074] Furthermore, according to an example of arrangement 9 of the present modification, since the first connecting section 125 has the first deformation section 1252, arrangement 9 has a structure in which the first deformation section 1252 is more likely to deform preferentially than the first contact section 1251. According to such a structure, the first contact section 1251 can apply a preload force in the direction of the second connecting section 225, while the first contact section 1251 itself is hardly deformed. Therefore, contact between the first connecting section 125 and the second connecting section 225 can be stabilized.

[0075] Furthermore, according to an example of arrangement 9 of the present modification, each of the device busbars 12 is configured such that the first connecting section 125 extends by folding back from one end of the extension of the first extension section 121. According to such a structure, the first contact section 1251 can apply a preload force in the direction of the second connecting section 225, while having a structure in which the first connecting section 125 is compactly accommodated with respect to the first extension section 121 and the first contact section 1251 itself is hardly deformed. <Andere Modifikationen>

[0076] In the first embodiment described above, the first connecting section 122 can be connected to the second connecting section 222 by coming into contact with the corresponding second connecting section 222. It should be noted that the arrangement 9 can be configured in any way as long as the first connecting section 122 can be connected to the second connecting section 222. As a modification, as described in Fig.As shown in Figure 8, the arrangement 9 can include a conductive element 4 (relay conductor). The conductive element 4 extends in the X direction across a plurality of pairs of the first connection section 122 and the second connection section 222. The conductive element 4 is collectively inserted between the first connection section 122 and the second connection section 222, across the plurality of pairs of the first connection section 122 and the second connection section 222. The conductive element 4 is made of a conductive material, such as metal. According to such a conductive element 4, the plurality of first connection sections 122 and the plurality of second connection sections 222 are connected to each other via the conductive element 4, thus enabling the conductive element 4 to collectively connect the plurality of first connection sections 122 and second connection sections 222.In the first embodiment, the arrangement 9 can also have a similar conductive element 4 between the first connecting section 123 and the second connecting section 223. Similarly, in the second embodiment, the arrangement 9 can have a similar conductive element 4 between the first connecting section 122 and the second connecting section 224. Finally, in the second embodiment, the arrangement 9 can have a similar conductive element 4 between the first connecting section 125 and the second connecting section 225.

[0077] In each of the embodiments described above, the first extension section extends in the Y direction. It should be noted that it is not limited to this direction and the first extension section can extend in any direction, as long as it extends continuously with the first connecting section in contact with the first installation surface. As a modification, the first extension section can extend in the X direction.

[0078] In each of the embodiments described above, the second extension section extends in the Y direction. It should be noted that it is not limited to this direction and the second extension section can extend in any direction, as long as it extends continuously with the second connecting section in contact with the second installation surface. As a modification, the second extension section can extend in the X direction.

[0079] In arrangement 9 of each of the embodiments described above, the device unit 1 and the battery unit 2 can be exposed but may have covers. As a modification, if each of the device unit 1 and the battery unit 2 has a cover, the cover on the side of the device unit 1 may have a flange with a hole for attaching the device unit 1 to the battery unit 2. Furthermore, a gasket may be attached to the flange, and the gasket and the cover on the high-voltage device side can ensure watertightness of the connection structure. As another modification, if neither of the device unit 1 nor the battery unit 2 has a cover, the device unit 1 and the battery unit 2 may be combined, and then the entire assembly of the device unit 1 and the battery unit 2 may be covered.

[0080] In arrangement 9 of each of the embodiments described above, positioning of the device unit 1 relative to the battery unit 2 (or of the battery unit 2 relative to the device unit 1) in the XY plane is achieved by the plurality of fastening elements 3, but can be accomplished by a different positioning mechanism. As a modification, a positioning through-hole can be formed in the flange section 13, and, on the other hand, a positioning projection can be formed at a corresponding position on the second mounting surface 211 of the battery unit 2. Ease of assembly is improved by utilizing the positioning through-hole and the positioning projection.Conversely, a positioning projection can be formed in the flange section 13, and a positioning through-hole can be formed at a corresponding position on the second installation surface 211 of the battery unit 2. As another modification, a positioning projection section can be formed on one of the first contact surfaces of the device busbar 12 and the second contact surface of the battery busbar 22, and a positioning recess section can be formed on one of the first contact surfaces of the device busbar 12 and the second contact surface of the battery busbar 22.

[0081] In arrangement 9 of each of the embodiments described above, the first deformation section is bent and extends from the first extension section toward the first contact section. It should be noted that the first deformation section can be configured in any way, as long as the first deformation section has a structure that is elastically deformable with respect to a pressing force that the first contact surface receives from the second contact surface, and a deformation section can be specified instead of deforming the entire device busbar. As one modification, the first deformation section can have a locally protruding shape. As another modification, the first deformation section can be a stacked busbar in which thinner busbars than the first extension section and the first contact section are stacked.As another modification, the first deformation section can be made of a material that deforms more easily, or a section with a smaller thickness than the first extension section and the first connection section. For example, if the material of the first extension section and the first connection section is aluminum, the material of the first deformation section can be copper, as it is a material that deforms easily.

[0082] In arrangement 9 of each of the embodiments described above, the second deformation section is bent and extends from the second extension section toward the second contact section. It should be noted that the second deformation section can be configured in any way, as long as the second deformation section has a structure that is elastically deformable with respect to a pressing force that the second contact surface receives from the first contact surface, and a deformation section can be specified instead of deforming the entire battery busbar. As one modification, the second deformation section can locally have a wave shape. As another modification, the second deformation section can have a structure that includes a stacked busbar, in which thinner busbars than the second extension section and the second contact section are stacked.As another modification, the second deformation section can be made of a material that deforms more easily, or a section with a smaller thickness than the second extension section and the second connection section. For example, if the material of the first extension section and the first connection section is aluminum, the material of the first deformation section can be copper, as it is a material that deforms easily.

[0083] In arrangement 9 of each of the embodiments described above, the first contact surface and the second contact surface are in contact with each other, but one of the two can be larger than the other. If one is larger than the other, it is easy to ensure a contact area necessary for a conductor, even against positional deviation during assembly.

[0084] In one example of the arrangement 9 of each of the embodiments described above, the device unit 1 and the battery unit 2 are fastened by the fastening material 3, which is a bolt. It should be noted that the arrangement 9 can be configured in any way as long as the device unit 1 and the battery unit 2 can be fixed to one another. As a modification, in a state where the side of the device unit 1 is pressed against the battery unit 2, metal enclosures of both units can be welded together, or resin enclosures of both units can be welded together.

[0085] In arrangement 9 of each of the embodiments described above, the gap AA is formed by bending the first deformation section of each of the device busbars 12 or the second deformation section of each of the battery busbars 22. It should be noted that arrangement 9 can be configured in any way as long as the gap AA is formed. As one modification, the gap AA can be formed by the first installation surface 111 deforming to separate from each of the device busbars 12, or by having a recess to separate from each of the device busbars 12. As another modification, the gap AA can be formed by the second installation surface 211 deforming to separate from each of the battery busbars 22, or by having a recess to separate from each of the battery busbars 22.Furthermore, each of the device busbars 12 need not have the first deformation section, as long as each of the device busbars 12 can absorb a pressing force in the entire section in which such a gap AA is formed. Similarly, each of the battery busbars 22 need not have the second deformation section, as long as each of the battery busbars 22 can absorb a pressing force in the entire section in which such a gap AA is formed.

[0086] The arrangement 9 of each of the embodiments described above has the gap AA at least either between the first installation surface and the first connection section or between the second installation surface and the second connection section, but may have the gap AA on both, between the first installation surface and the first connection section and between the second installation surface and the second connection section.

[0087] The arrangement 9 of each of the embodiments described above has the gap AA at least either between the first installation surface and the first connection section or between the second installation surface and the second connection section. It should be noted that in arrangement 9, an insulating elastic element can be inserted into the gap AA, or into at least a portion of the gap AA. By inserting the elastic element, arrangement 9 can ensure adequate contact pressure.

[0088] While the embodiments of the present disclosure have been described above, it should be understood that these are exemplary of the present disclosure and are not to be considered limiting. These embodiments can be implemented in various other forms, and various omissions, substitutions, and other modifications can be made without departing from the scope of the present disclosure. Consequently, the invention is not to be considered limited by the preceding description and is limited only by the scope of the appended claims. Industrial applicability

[0089] According to the arrangement of the present disclosure, it is easy to ensure contact pressure between connection sections. DESCRIPTION OF REFERENCE MARKS 1 device unit 2 battery units 3 Mounting hardware 4 Conductive element (relay conductor) 9 Arrangement 11 Device 12 Device busbar 13 Flange section 13h Through hole 21 battery pack 21h screw hole 22 Battery busbar 111 First installation interface 121 First extension section 122 First connecting section 122a First contact surface 123 First connecting section 125 First connecting section 211 Second installation interface 221 Second extension section 222 Second connecting section 223 Second connecting section 223a Second contact surface 224 Second connecting section 225 Second connecting section 225a Second contact surface First contact section 1231a First contact surface 1232 First deformation section 1251 First contact section 1251a First contact surface 1252 First deformation section 2221 Second contact section 2221a Second contact surface 2222 Second deformation section 2241 Second contact section 2241a Second contact surface 2242 Second deformation section AA gap QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2018-144524 [0002, 0003, 0036]

Claims

[1] Arrangement (9), with: a device unit (1) comprising a device (11) and a device busbar (12), wherein the device (11) has a first installation surface (111), the device busbar (12) has a first extension portion (121) extending in contact with the first installation surface (111), and a first connecting portion (122, 123, 125) extending continuously from the first extension portion (121); and a battery unit (2) having a battery pack (21) and a battery bus bar (22), wherein the battery pack (21) has a second installation surface (211) facing the first installation surface (111), the battery bus bar (22) has a second extension portion (221) extending in contact with the second installation surface (211), and a second connection portion (222, 223, 224, 225) extending continuously from the second extension portion (221) and connectable to the first connection portion (122, 123, 125), wherein a gap (AA) is formed, at least one of between the first installation surface (111) and the first connecting portion (122, 123, 125) and between the second installation surface (211) and the second connecting portion (222, 223, 224, 225). [2] Arrangement (9) according to claim 1, wherein the gap (AA) is formed between the second installation surface (211) and the second connecting portion (222, 224), and the second connecting portion (222, 224) has a second contact portion (2221, 2241) and a second deformation portion (2222, 2242) which connects the second extension portion (221) and the second contact portion (2221, 2241) to each other. [3] The assembly (9) according to claim 2, wherein the second deformation portion (2222) connects the second contact portion (2221) and the second extension portion (221) to each other such that the gap (AA) is formed between the second installation surface (211) and the second connecting portion (222) while the second connecting portion (222) extends further forward from an end of the extension of the second extension portion (221). [4] The assembly (9) according to claim 2, wherein the second deformation portion (2242) connects the second contact portion (2241) and the second extension portion (221) to each other such that the gap (AA) is formed between the second extension portion (221) and the second connecting portion (224) while the second connecting portion (224) extends by folding back from one end of the extension of the second extension portion (221). [5] Arrangement (9) according to claim 1, wherein the gap (AA) is formed between the first installation surface (111) and the first connecting portion (123, 125), and the first connecting portion (123, 125) has a first contact portion (1231, 1251) and a first deformation portion (1232, 1252), wherein the first deformation portion (1232, 1252) connects the first extension portion (121) and the first contact portion (1231, 1251) to one another. [6] The assembly (9) according to claim 5, wherein the first deformation portion (1232) connects the first contact portion (1231) and the first extension portion (121) to each other such that the gap (AA) is formed between the first installation surface (111) and the first connecting portion (123) while the first connecting portion (123) extends further forward from an end of the extension of the first extension portion (121). [7] The assembly (9) according to claim 5, wherein the first deformation portion (1252) connects the first contact portion (1251) and the first extension portion (121) to each other such that the gap (AA) is formed between the first extension portion (121) and the first connecting portion (125) while the first connecting portion (125) extends by folding back from one end of the extension of the first extension portion (121). [8] Arrangement (9) according to one of claims 1 to 7, with a plurality of pairs of the first connecting portion (122, 123, 125) and the second connecting portion (222, 223, 224, 225), and further comprising a relay connector to be collectively inserted between the first connecting portion (122, 123, 125) and the second connecting portion via the plurality of pairs.

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