Electrical connection module and electrical connection assembly

Abstract

To provide an electrical connection module and an electrical connection assembly that ensure reliable electrical contact with conductive posts even in a vibration environment and that allows for quick insertion and removal.SOLUTION: An electrical connection member 1 includes an outer peripheral wall surrounding a receiving cavity, as well as an upper wall and a bottom opening opposite the upper wall in the axial direction of the receiving cavity, and a contact spring 13 has an annular shape so as to be attached in a ring shape to the conductive post 21 of a connection object 2 inserted from the bottom opening, and the contact spring 13 undergoes elastic deformation along the radial direction of the receiving cavity to make electrical contact in the radial direction with the inserted conductive post 21.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of Chinese Patent Application No. CN202410132352.6, filed with the State Intellectual Property Office of China on January 30, 2024, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to an electrical connection module and an electrical connection assembly including an electrical connection module. [Background technology]

[0003] In the prior art, when busbars are used as conductive conductors, the contact surfaces of such electrical conduction systems are in face-to-face contact and are usually fastened by bolts or laser welding. The bolt fastening method is mainly used for connecting devices, while the laser welding is widely used for battery packs and is an irreversible connection method.

[0004] In the prior art, for electrical connection between a busbar and a device, the electrical connection structure at the end of the busbar is allowed to float, while the electrical connection structure at the end of the device is fixed and attached to the electrical connection structure at the end of the device using bolts, for example in the application of contact devices.

[0005] In the prior art, for example in cabinet applications, for electrical connection between bus bars, the electrical connection structures at both ends of the bus bar are allowed to float, and bolts are used to lock the electrical connection structures at both ends of the bus bar.

[0006] In the prior art, for example in battery pack applications, for the electrical connection between the busbar and the poles of the rechargeable battery cells, the electrical connection structures at the busbar ends are floatable, the poles at the battery cell ends are fixed, and the electrical connection structures at the busbar ends are welded to the poles at the battery cell ends by laser welding.

[0007] In the prior art, the use of flat-surface electrical contact methods can result in poor electrical contact in a vibration environment, and the use of welding can make it difficult to achieve insertion and removal functions, making it inconvenient to use. Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made to overcome or mitigate at least one aspect of the above disadvantages. [Means for solving the problem]

[0009] According to an aspect of the present invention, there is provided an electrical connection module. The electrical connection module includes an electrical connection member having a receiving cavity formed therein, and a contact spring provided in the receiving cavity. The electrical connection member has an outer peripheral wall surrounding the receiving cavity, an upper wall, and a bottom opening on the opposite side of the upper wall in the axial direction of the receiving cavity. The contact spring has an annular shape so as to be able to be fitted in a ring shape to a conductive post of a connection target inserted through the bottom opening. The contact spring is configured to undergo elastic deformation along the radial direction of the receiving cavity to make electrical contact with the inserted conductive post in the radial direction. Therefore, the electrical connection member can be electrically connected to the connection target via the contact spring.

[0010] According to an exemplary embodiment of the present invention, an upper through-hole through which the conductive post can pass is formed in the upper wall of the receiving cavity, so that the conductive post inserted from the bottom opening of the receiving cavity can pass through the upper through-hole and into the upper wall of the receiving cavity.

[0011] According to another exemplary embodiment of the present invention, the electrical connection module further comprises a restricting element, which is annular in shape, attached to the receiving cavity, and used to restrict the contact spring in the axial direction of the receiving cavity and prevent the contact spring from moving in the axial direction of the receiving cavity.

[0012] According to another exemplary embodiment of the present invention, the restrictive element has a peripheral wall portion, a bottom wall, and an upper opening, a bottom through-hole through which the conductive post can pass is formed in the bottom wall of the restrictive element, the bottom wall of the restrictive element and the upper wall of the receiving cavity are on opposite sides in the axial direction of the receiving cavity and are located above and below the contact spring, respectively, so that the contact spring cannot move in the axial direction of the receiving cavity.

[0013] According to another exemplary embodiment of the present invention, an outer peripheral surface of the peripheral wall of the restrictive element is interference-fitted with an inner peripheral surface of the outer peripheral wall of the receiving cavity to secure the restrictive element to the receiving cavity.

[0014] According to another exemplary embodiment of the present invention, before the conductive posts are inserted into the contact spring, there is a predetermined gap between the contact spring and the peripheral wall of the restrictive element that allows the contact spring to float radially in the receiving cavity.

[0015] According to another exemplary embodiment of the present invention, after the conductive posts are inserted into the contact springs, the contact springs are expanded radially in the receiving cavity by the conductive posts and contact the peripheral wall of the restrictive element.

[0016] According to another exemplary embodiment of the present invention, the contact spring contacts the peripheral wall of the restrictive element before the conductive post is inserted into the contact spring.

[0017] According to another exemplary embodiment of the present invention, the upper surface of the peripheral wall portion of the restrictive element is configured to be pressed against the inner surface of the upper wall of the receiving cavity, and the bottom wall of the restrictive element is configured to be pressed against the upper surface of the connection object, so that the restrictive element can be positioned in the axial direction of the receiving cavity.

[0018] According to another exemplary embodiment of the present invention, the electrical connection member has a flat connection portion, the outer wall of the receiving cavity protrudes from the top surface of the flat connection portion, the bottom surface of the flat connection portion is configured to abut the top surface of the connection object, and the bottom opening of the receiving cavity is located at the bottom surface of the flat connection portion.

[0019] According to another exemplary embodiment of the present invention, the electrical connection module further comprises a nut, the nut being suitable for threaded connection to a conductive post passing through the upper wall of the receiving cavity to fasten the electrical connection module to the upper surface of the connection object, and when the electrical connection module is fastened to the upper surface of the connection object, the nut is pressed against the outer surface of the upper wall of the receiving cavity.

[0020] According to another exemplary embodiment of the present invention, when the electrical connection module is fastened to the top surface of the connection object, the bottom surface of the electrical connection member is pressed against the top surface of the connection object or tilted at a predetermined angle relative to the top surface of the connection object.

[0021] According to another exemplary embodiment of the present invention, the contact spring includes a spiral spring wound into a ring shape suitable for attachment to the conductive post, and a C-shaped elastic ring attached to the spiral spring, The spiral spring is used to make electrical contact with the conductive post, and the C-shaped elastic ring is used to provide an auxiliary contact force to the spiral spring to increase the electrical contact force between the spiral spring and the conductive post.

[0022] According to another exemplary embodiment of the present invention, the contact spring includes a corrugated spring leaf wound into a ring shape for attachment to the conductive post.

[0023] According to another exemplary embodiment of the present invention, a single receiving cavity is formed in the electrical connection member, and the electrical connection module is used to electrically connect to a single target conductive post.

[0024] According to another exemplary embodiment of the present invention, a plurality of receiving cavities are formed in the electrical connection member, and the electrical connection module includes a plurality of contact springs respectively disposed in the plurality of receiving cavities to electrically connect to the plurality of conductive posts to be connected and electrically interconnect the plurality of conductive posts to be connected.

[0025] According to another exemplary embodiment of the present invention, the electrical connection module further comprises a plurality of restricting elements respectively disposed in the plurality of receiving cavities to respectively prevent the plurality of contact springs from moving axially in the receiving cavities.

[0026] According to another aspect of the present invention, there is provided an electrical connection assembly comprising the above-described electrical connection module and a connection object having conductive posts for electrical connection, the conductive posts being inserted into the receiving cavities of the electrical connection member, and contact springs being attached to the inserted conductive posts and making electrical contact with the conductive posts to electrically connect the electrical connection member to the connection object via the contact springs.

[0027] According to an exemplary embodiment of the present invention, the connection object has an upper surface, the conductive post extends upward from the upper surface of the connection object by a predetermined height, the conductive post has a thread formed on the end of the conductive post, and the conductive post passes through an upper through-hole in the upper wall of the receiving cavity and is screwed onto a nut to tighten the electrical connection module onto the upper surface of the connection object.

[0028] According to another exemplary embodiment of the present invention, the electrical connection member is a first bus bar, the connection object is a second bus bar, and the first bus bar is electrically connected to the second bus bar via a contact spring.

[0029] According to another exemplary embodiment of the present invention, the electrical connection member is a bus bar, the connection object is an electrical device, and the bus bar is electrically connected to the electrical device via a contact spring.

[0030] According to another exemplary embodiment of the present invention, the electrical connection member is a bus bar, the connection object is a rechargeable battery cell, the conductive post is an electrode end of the battery cell, and the bus bar is electrically connected to the battery cell via a contact spring.

[0031] According to another exemplary embodiment of the present invention, receiving cavities are respectively formed at two ends of the electrical connection member, the electrical connection module includes two contact springs respectively disposed in the receiving cavities at both ends of the electrical connection member, the electrical connection assembly includes a plurality of electrical connection modules and a plurality of battery cells, and the electrode ends of adjacent battery cells are respectively inserted into the receiving cavities at both ends of the electrical connection member, thus the electrode ends of the adjacent battery cells are electrically interconnected.

[0032] In the above exemplary embodiment according to the present invention, the contact spring is attached to the conductive post in a ring shape, and electrically contacts the conductive post, ensuring reliable electrical contact even in a vibration environment. Furthermore, the present invention can realize quick insertion and removal functions, making it very convenient to use.

[0033] These and other features of the present invention will become more apparent from the detailed description of illustrative embodiments taken in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0034] [Figure 1] 1 is a diagrammatic perspective view of an electrical connection assembly according to a first embodiment of the present invention; [Figure 2] FIG. 2 is a cross-sectional view of the electrical connection assembly shown in FIG. [Figure 3] 1 is an exploded view illustrating an electrical connection assembly according to a first embodiment of the present invention. [Figure 4] 1 is a diagrammatic perspective view of a contact spring of an electrical connection assembly according to a first embodiment of the present invention; [Figure 5] FIG. 4 is a cross-sectional view of the electrical connection assembly shown in FIG. 3. [Figure 6] FIG. 10 is a diagrammatic perspective view of an electrical connection assembly according to a second embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view of the electrical connection assembly shown in FIG. 6. [Figure 8] FIG. 6 is an exploded view illustrating an electrical connection assembly according to a second embodiment of the present invention. [Figure 9] FIG. 10 is a diagrammatic perspective view of a contact spring of an electrical connection assembly according to a second embodiment of the present invention. [Figure 10] FIG. 9 is a cross-sectional view of the electrical connection assembly shown in FIG. 8. [Figure 11] FIG. 10 is a diagrammatic perspective view of an electrical connection assembly according to a third embodiment of the present invention. [Figure 12] FIG. 10 is an explanatory perspective view of an electrical connection module according to a third embodiment of the present invention. [Figure 13] FIG. 10 is a cross-sectional view of an electrical connection module according to a third embodiment of the present invention. [Figure 14] FIG. 10 is an explanatory exploded view of an electrical connection module according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0035] Exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Like reference numerals refer to like elements throughout the drawings. However, the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.

[0036] In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are diagrammatically shown to simplify the drawings.

[0037] According to a general aspect of the present invention, there is provided an electrical connection module comprising: an electrical connection member having a receiving cavity formed therein; and a contact spring disposed in the receiving cavity. The electrical connection member has an outer peripheral wall surrounding the receiving cavity, a top wall, and a bottom opening on the axial opposite side of the receiving cavity from the top wall. The contact spring has an annular shape so as to be able to be fitted in a ring shape onto a conductive post of a connection target inserted through the bottom opening. The contact spring is configured to undergo elastic deformation along the radial direction of the receiving cavity to make electrical contact with the inserted conductive post in the radial direction, thereby allowing the electrical connection member to be electrically connected to the connection target via the contact spring.

[0038] According to another general aspect of the present invention, there is provided an electrical connection assembly comprising the above-described electrical connection module and a connection object having conductive posts for electrical connection, the conductive posts being inserted into the receiving cavities of the electrical connection member, and contact springs being attached to the inserted conductive posts and making electrical contact with the conductive posts to electrically connect the electrical connection member to the connection object via the contact springs.

[0039] First embodiment Figures 1 to 5 show a first embodiment according to the present invention. Of these drawings, Figure 1 is an explanatory perspective view of an electrical connection assembly according to the first embodiment of the present invention, Figure 2 is a cross-sectional view of the electrical connection assembly shown in Figure 1, Figure 3 is an explanatory exploded view of the electrical connection assembly according to the first embodiment of the present invention, Figure 4 is an explanatory perspective view of a contact spring of the electrical connection assembly according to the first embodiment of the present invention, and Figure 5 is a cross-sectional view of the electrical connection assembly shown in Figure 3.

[0040] As shown in Figures 1 to 5, an exemplary embodiment of the present invention discloses an electrical connection module 100. The electrical connection module 100 includes an electrical connection member 1 and a contact spring 13. A receiving cavity 101 is formed in the electrical connection member 1. The contact spring 13 is provided in the receiving cavity 101 of the electrical connection member 1. The electrical connection member 1 has an outer peripheral wall 11 surrounding the receiving cavity 101, and a top wall 12 and a bottom opening 101a that are opposite to each other in the axial direction of the receiving cavity 101.

[0041] 1 to 5, in the illustrated embodiment, the contact spring 13 is annular so as to be mountable in a ring shape on the conductive post 21 of the connection object 2 inserted from the bottom opening 13a. The contact spring 13 is configured to be elastically deformed along the radial direction of the receiving cavity 101, so as to be able to electrically contact the inserted conductive post 21 in the radial direction, and the electrical connection member 1 can be electrically connected to the connection object 2 via the contact spring 13.

[0042] As shown in Figures 1 to 5, in the illustrated embodiment, an upper through-hole 102 through which the conductive post 21 can pass is formed in the upper wall 12 of the receiving cavity 101, and therefore the conductive post 21 inserted from the bottom opening 101a of the receiving cavity 101 can pass through the upper through-hole 102 and into the upper wall 12 of the receiving cavity 101.

[0043] As shown in Figures 1 to 5, in the illustrated embodiment, the electrical connection module 100 further includes a restricting element 14, which is annular in shape and attached to the receiving cavity 101, restricting the contact spring 13 in the axial direction of the receiving cavity 101 and preventing the contact spring 13 from moving in the axial direction of the receiving cavity 101.

[0044] 1 to 5, in the illustrated embodiment, the restricting element 14 has a peripheral wall portion 141, a bottom wall 142, and an upper opening 104. A bottom through-hole 103 through which the conductive post 21 can pass is formed in the bottom wall 142 of the restricting element 14. The bottom wall 142 of the restricting element 14 and the upper wall 12 of the receiving cavity 101 are on opposite sides in the axial direction of the receiving cavity 101 and are located above and below the contact spring 13, respectively; therefore, the contact spring 13 cannot move in the axial direction of the receiving cavity 101.

[0045] As shown in Figures 1 to 5, in the illustrated embodiment, the outer peripheral surface of the peripheral wall portion 141 of the restricting element 14 is tightly fitted into the inner peripheral surface of the outer peripheral wall 11 of the receiving cavity 101 to fix the restricting element 14 to the receiving cavity 101.

[0046] 1 to 5, in the illustrated embodiment, before the conductive posts 21 are inserted into the contact springs 13, there is a predetermined gap between the contact springs 13 and the peripheral wall 141 of the limiting element 14, which allows the contact springs 13 to float radially in the receiving cavities 101. In this way, errors caused by primary manufacturing, installation, or thermal expansion can be accommodated.

[0047] As shown in Figures 1 to 5, in the illustrated embodiment, after the conductive post 21 is inserted into the contact spring 13, the contact spring 13 is expanded radially in the receiving cavity 101 by the conductive post 21 and contacts the peripheral wall portion 141 of the limiting element 14.

[0048] As shown in FIGS. 1-5, in another exemplary embodiment, the contact spring 13 contacts the peripheral wall portion 141 of the limiting element 14 before the conductive post 21 is inserted into the contact spring 13.

[0049] As shown in Figures 1 to 5, in the illustrated embodiment, the upper surface of the peripheral wall portion 141 of the limiting element 14 is pressed against the inner surface of the upper wall 12 of the receiving cavity 101, and the bottom wall 142 of the limiting element 14 is pressed against the upper surface 2a of the connection object 2, so that the limiting element 14 can be positioned in the axial direction of the receiving cavity 101.

[0050] 1 to 5, in the illustrated embodiment, the electrical connection member 1 has a flat connection portion 10, and an outer peripheral wall 11 of a receiving cavity 101 protrudes from the upper surface of the flat connection portion 10. The bottom surface of the flat connection portion 10 is configured to abut against the upper surface 2a of the connection target 2, and a bottom opening 101a of the receiving cavity 101 is located on the bottom surface of the flat connection portion 10.

[0051] 1 to 5, in the illustrated embodiment, the electrical connection module 100 further includes a nut 15, which is configured to screw in the conductive post 21 passing through the upper wall 12 of the receiving cavity 101, thereby tightening the electrical connection module 100 to the upper surface 2a of the connection object 2. When the electrical connection module 100 is tightened to the upper surface 2a of the connection object 2, the nut 15 is pressed against the outer surface of the upper wall 12 of the receiving cavity 101.

[0052] As shown in Figures 1 to 5, in the illustrated embodiment, when the electrical connection module 100 is fastened to the upper surface 2a of the connection object 2, the bottom surface of the electrical connection member 1 is pressed against the upper surface 2a of the connection object 2 or is inclined at a predetermined angle relative to the upper surface of the connection object 2.

[0053] As shown in FIGS. 1 to 5 , in the illustrated embodiment, the contact spring 13 includes a coil spring 131 and a C-shaped elastic ring 132. The coil spring 131 is wound into a ring shape so as to be attached to the conductive post 21. The C-shaped elastic ring 132 is provided on the coil spring 131. The coil spring 131 is used to make electrical contact with the conductive post 21, and the C-shaped elastic ring 132 is used to provide an auxiliary contact force to the coil spring 131 to increase the electrical contact force between the coil spring 131 and the conductive post 21.

[0054] However, it should be noted that the contact spring 13 of the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the contact spring 13 may include a corrugated spring leaf wound into a ring shape suitable for attachment to the conductive post 21.

[0055] 1 to 5, an electrical connection assembly is disclosed in another exemplary embodiment of the present invention. The electrical connection assembly includes an electrical connection module 100 and a connection object 2. The connection object 2 has conductive posts 21 for electrical connection. The conductive posts 21 are inserted into receiving cavities 101 of the electrical connection member 1, and contact springs 13 are attached to the inserted conductive posts 21 and make electrical contact with the conductive posts 21, electrically connecting the electrical connection member 1 to the connection object 2 via the contact springs 13.

[0056] 1 to 5, in the illustrated embodiment, the connection object 2 has an upper surface 2a, the conductive posts 21 extend upward from the upper surface 2a of the connection object 2 by a predetermined height, and the conductive posts 21 are threaded at their ends. The conductive posts 21 pass through upper through-holes 102 in the upper wall 12 of the receiving cavity 101 and are screwed onto nuts 15, thereby fastening the electrical connection module 100 to the upper surface 2a of the connection object 2.

[0057] As shown in FIGS. 1 to 5, in the illustrated embodiment, the electrical connection member 1 is a bus bar, the connection object 2 is an electrical device, and the bus bar is electrically connected to the electrical device via a contact spring 13.

[0058] 1 to 5, in the illustrated embodiment, a single receiving cavity 101 is formed in the electrical connection member 1. The electrical connection module 100 is used to electrically connect to the conductive post 21 of a single connection target 2.

[0059] Second embodiment Figures 6 to 10 show a second embodiment of the present invention. Of these drawings, Figure 6 is an explanatory perspective view of an electrical connection assembly according to the second embodiment of the present invention, Figure 7 is a cross-sectional view of the electrical connection assembly shown in Figure 6, Figure 8 is an explanatory exploded view of the electrical connection assembly according to the second embodiment of the present invention, Figure 9 is an explanatory perspective view of a contact spring of the electrical connection assembly according to the second embodiment of the present invention, and Figure 10 is a cross-sectional view of the electrical connection assembly shown in Figure 8.

[0060] As shown in Figures 6 to 10, an exemplary embodiment of the present invention discloses an electrical connection module 100. The electrical connection module 100 includes an electrical connection member 1 and a contact spring 13. A receiving cavity 101 is formed in the electrical connection member 1. The contact spring 13 is provided in the receiving cavity 101 of the electrical connection member 1. The electrical connection member 1 has an outer peripheral wall 11 surrounding the receiving cavity 101, and a top wall 12 and a bottom opening 101a that are opposite to each other in the axial direction of the receiving cavity 101.

[0061] 6 to 10 , in the illustrated embodiment, the contact springs 13 are annular so as to be mountable in a ring shape on the conductive posts 21 of the connection object 2 inserted from the bottom opening 14a. The contact springs 13 are configured to undergo elastic deformation along the radial direction of the receiving cavity 101, so as to be able to make electrical contact with the inserted conductive posts 21 in the radial direction, and the electrical connection member 1 can be electrically connected to the connection object 2 via the contact springs 13.

[0062] As shown in Figures 6 to 10, in the illustrated embodiment, an upper through-hole 102 through which the conductive post 21 can pass is formed in the upper wall 12 of the receiving cavity 101, and therefore the conductive post 21 inserted from the bottom opening 101a of the receiving cavity 101 can pass through the upper through-hole 102 and into the upper wall 12 of the receiving cavity 101.

[0063] As shown in Figures 6 to 10, in the illustrated embodiment, the electrical connection module 100 further includes a restricting element 14, which is annular in shape and attached to the receiving cavity 101, restricting the contact spring 13 in the axial direction of the receiving cavity 101 and preventing the contact spring 13 from moving in the axial direction of the receiving cavity 101.

[0064] 6 to 10 , in the illustrated embodiment, the restricting element 14 has a peripheral wall portion 141, a bottom wall 142, and an upper opening 104. A bottom through-hole 103 through which the conductive post 21 can pass is formed in the bottom wall 142 of the restricting element 14. The bottom wall 142 of the restricting element 14 and the upper wall 12 of the receiving cavity 101 are on opposite sides in the axial direction of the receiving cavity 101 and are located above and below the contact spring 13, respectively; therefore, the contact spring 13 cannot move in the axial direction of the receiving cavity 101.

[0065] As shown in Figures 6 to 10, in the illustrated embodiment, the outer peripheral surface of the peripheral wall portion 141 of the restricting element 14 is tightly fitted into the inner peripheral surface of the outer peripheral wall 11 of the receiving cavity 101 to fix the restricting element 14 to the receiving cavity 101.

[0066] 6 to 10, in the illustrated embodiment, before the conductive posts 21 are inserted into the contact springs 13, there is a predetermined gap between the contact springs 13 and the peripheral wall 141 of the limiting element 14, which allows the contact springs 13 to float radially in the receiving cavities 101. In this way, errors caused by primary manufacturing, installation, or thermal expansion can be accommodated.

[0067] As shown in Figures 6 to 10, in the illustrated embodiment, after the conductive post 21 is inserted into the contact spring 13, the contact spring 13 is expanded radially in the receiving cavity 101 by the conductive post 21 and contacts the peripheral wall portion 141 of the limiting element 14.

[0068] As shown in FIGS. 6 to 10, in the exemplary embodiment, before the conductive post 21 is inserted into the contact spring 13, the contact spring 13 contacts the peripheral wall portion 141 of the limiting element 14.

[0069] As shown in Figures 6 to 10, in the illustrated embodiment, the upper surface of the peripheral wall portion 141 of the limiting element 14 is pressed against the inner surface of the upper wall 12 of the receiving cavity 101, and the bottom wall 142 of the limiting element 14 is pressed against the upper surface 2a of the connection object 2, so that the limiting element 14 can be positioned in the axial direction of the receiving cavity 101.

[0070] 6 to 10 , in the illustrated embodiment, the electrical connection member 1 has a flat connection portion 10, and the outer peripheral wall 11 of the receiving cavity 101 protrudes from the upper surface of the flat connection portion 10. The bottom surface of the flat connection portion 10 is configured to abut against the upper surface 2a of the connection target 2, and the bottom opening 101a of the receiving cavity 101 is located on the bottom surface of the flat connection portion 10.

[0071] 6 to 10 , in the illustrated embodiment, the electrical connection module 100 further includes a nut 15, which is suitable for threaded connection to a conductive post 21 passing through the upper wall 12 of the receiving cavity 101, thereby fastening the electrical connection module 100 to the upper surface 2 a of the connection object 2. When the electrical connection module 100 is fastened to the upper surface 2 a of the connection object 2, the nut 15 is pressed against the outer surface of the upper wall 12 of the receiving cavity 101.

[0072] As shown in Figures 6 to 10, in the illustrated embodiment, when the electrical connection module 100 is fastened to the upper surface 2a of the connection object 2, the bottom surface of the electrical connection member 1 is pressed against the upper surface 2a of the connection object 2 or is inclined at a predetermined angle relative to the upper surface of the connection object 2.

[0073] As shown in FIGS. 6 to 10 , in the illustrated embodiment, the contact spring 13 includes a coil spring 131 and a C-shaped elastic ring 132. The coil spring 131 is wound into a ring shape so as to be attached to the conductive post 21. The C-shaped elastic ring 132 is provided on the coil spring 131. The coil spring 131 is used to make electrical contact with the conductive post 21, and the C-shaped elastic ring 132 is used to provide an auxiliary contact force to the coil spring 131 to increase the electrical contact force between the coil spring 131 and the conductive post 21.

[0074] However, it should be noted that the contact spring 13 of the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the contact spring 13 may include a corrugated spring leaf wound into a ring shape suitable for placement on the conductive post 21.

[0075] 6 to 10 , an electrical connection assembly is disclosed in another exemplary embodiment of the present invention. The electrical connection assembly includes an electrical connection module 100 and a connection object 2. The connection object 2 has conductive posts 21 for electrical connection. The conductive posts 21 are inserted into receiving cavities 101 of the electrical connection member 1, and contact springs 13 are attached to the inserted conductive posts 21 and make electrical contact with the conductive posts 21, electrically connecting the electrical connection member 1 to the connection object 2 via the contact springs 13.

[0076] 6 to 10 , in the illustrated embodiment, the connection object 2 has an upper surface 2a, the conductive posts 21 extend upward from the upper surface 2a of the connection object 2 by a predetermined height, and the conductive posts 21 are threaded at their ends. The conductive posts 21 pass through upper through-holes 102 in the upper wall 12 of the receiving cavity 101 and are screwed onto nuts 15, thereby fastening the electrical connection module 100 to the upper surface 2a of the connection object 2.

[0077] As shown in Figures 6 to 10, in the illustrated embodiment, the electrical connection member 1 is a first bus bar, the connection object 2 is a second bus bar, and the first bus bar is electrically connected to the second bus bar via a contact spring 13.

[0078] 6 to 10, in the illustrated embodiment, a single receiving cavity 101 is formed in the electrical connection member 1. The electrical connection module 100 is used to electrically connect to the conductive post 21 of a single connection target 2.

[0079] Third embodiment Figures 11 to 14 show a third embodiment of the present invention. Of these drawings, Figure 11 is an explanatory perspective view of an electrical connection assembly according to the third embodiment of the present invention, Figure 12 is an explanatory perspective view of an electrical connection module 100 according to the third embodiment of the present invention, Figure 13 is a cross-sectional view of the electrical connection module 100 according to the third embodiment of the present invention, and Figure 14 is an explanatory exploded view of the electrical connection module according to the third embodiment of the present invention.

[0080] 11 to 14, an exemplary embodiment of the present invention discloses an electrical connection module 100. The electrical connection module 100 includes an electrical connection member 1 and a contact spring 13. A receiving cavity 101 is formed in the electrical connection member 1. The contact spring 13 is provided in the receiving cavity 101 of the electrical connection member 1. The electrical connection member 1 has an outer peripheral wall 11 surrounding the receiving cavity 101, and a top wall 12 and a bottom opening 101a that are opposite to each other in the axial direction of the receiving cavity 101.

[0081] 11 to 14, in the illustrated embodiment, the contact springs 13 are annular so as to be mountable in a ring shape on the conductive posts 21 of the connection object 2 inserted from the bottom opening 14a. The contact springs 13 are configured to undergo elastic deformation along the radial direction of the receiving cavity 101, so as to be able to make electrical contact with the inserted conductive posts 21 in the radial direction, and the electrical connection member 1 can be electrically connected to the connection object 2 via the contact springs 13.

[0082] As shown in Figures 11 to 14, in the illustrated embodiment, an upper through-hole 102 through which the conductive post 21 can pass is formed in the upper wall 12 of the receiving cavity 101, and therefore the conductive post 21 inserted from the bottom opening 101a of the receiving cavity 101 can pass through the upper through-hole 102 and into the upper wall 12 of the receiving cavity 101.

[0083] As shown in Figures 11 to 14, in the illustrated embodiment, the electrical connection module 100 further includes a restricting element 14, which is annular in shape and attached to the receiving cavity 101, restricting the contact spring 13 in the axial direction of the receiving cavity 101 and preventing the contact spring 13 from moving in the axial direction of the receiving cavity 101.

[0084] 11 to 14 , in the illustrated embodiment, the restricting element 14 has a peripheral wall portion 141, a bottom wall 142, and an upper opening 104. A bottom through-hole 103 through which the conductive post 21 can pass is formed in the bottom wall 142 of the restricting element 14. The bottom wall 142 of the restricting element 14 and the upper wall 12 of the receiving cavity 101 are on opposite sides in the axial direction of the receiving cavity 101 and are located above and below the contact spring 13, respectively; therefore, the contact spring 13 cannot move in the axial direction of the receiving cavity 101.

[0085] As shown in Figures 11 to 14, in the illustrated embodiment, the outer peripheral surface of the peripheral wall portion 141 of the restricting element 14 is tightly fitted into the inner peripheral surface of the outer peripheral wall 11 of the receiving cavity 101, thereby fixing the restricting element 14 to the receiving cavity 101.

[0086] 11 to 14, in the illustrated embodiment, before the conductive posts 21 are inserted into the contact springs 13, there is a predetermined gap between the contact springs 13 and the peripheral wall 141 of the limiting element 14, which allows the contact springs 13 to float radially in the receiving cavities 101. In this way, errors caused by primary manufacturing, installation, or thermal expansion can be accommodated.

[0087] As shown in Figures 11 to 14, in the illustrated embodiment, after the conductive post 21 is inserted into the contact spring 13, the contact spring 13 is expanded radially in the receiving cavity 101 by the conductive post 21 and contacts the peripheral wall portion 141 of the limiting element 14.

[0088] As shown in FIGS. 11 to 14, in the exemplary embodiment, before the conductive post 21 is inserted into the contact spring 13, the contact spring 13 contacts the peripheral wall portion 141 of the limiting element 14.

[0089] As shown in Figures 11 to 14, in the illustrated embodiment, the upper surface of the peripheral wall portion 141 of the limiting element 14 is pressed against the inner surface of the upper wall 12 of the receiving cavity 101, and the bottom wall 142 of the limiting element 14 is pressed against the upper surface of the connection object 2, so that the limiting element 14 can be positioned in the axial direction of the receiving cavity 101.

[0090] 11 to 14, in the illustrated embodiment, the electrical connection member 1 has a flat connection portion 10, and the outer peripheral wall 11 of the receiving cavity 101 protrudes from the upper surface of the flat connection portion 10. The bottom surface of the flat connection portion 10 is configured to abut against the upper surface of the connection target 2, and the bottom opening 101a of the receiving cavity 101 is located at the bottom surface of the flat connection portion 10.

[0091] As shown in FIGS. 11 to 14 , in the illustrated embodiment, the contact spring 13 includes a coil spring 131 and a C-shaped elastic ring 132 (see FIGS. 4 and 9 ). The coil spring 131 is wound into a ring shape so as to be attached to the conductive post 21. The C-shaped elastic ring 132 is provided on the coil spring 131. The coil spring 131 is used to make electrical contact with the conductive post 21, and the C-shaped elastic ring 132 is used to provide an auxiliary contact force to the coil spring 131 to increase the electrical contact force between the coil spring 131 and the conductive post 21.

[0092] However, it should be noted that the contact spring 13 of the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the contact spring 13 may include a corrugated spring leaf wound into a ring shape suitable for attachment to the conductive post 21.

[0093] 11 to 14, an electrical connection assembly is disclosed in another exemplary embodiment of the present invention. The electrical connection assembly includes an electrical connection module 100 and a connection object 2. The connection object 2 has conductive posts 21 for electrical connection. The conductive posts 21 are inserted into receiving cavities 101 of the electrical connection member 1, and contact springs 13 are attached to the inserted conductive posts 21 and make electrical contact with the conductive posts 21, electrically connecting the electrical connection member 1 to the connection object 2 via the contact springs 13.

[0094] As shown in Figures 11 to 14, in the illustrated embodiment, a plurality of receiving cavities 101 are formed in the electrical connection member 1, and the electrical connection module 100 includes a plurality of contact springs 13 respectively disposed in the plurality of receiving cavities 101 to electrically connect to the conductive posts 21 of the plurality of connection objects 2 and electrically interconnect the conductive posts 21 of the plurality of connection objects 2.

[0095] As shown in Figures 11 to 14, in the illustrated embodiment, the electrical connection module 100 further includes a plurality of restricting elements 14, which are respectively arranged in the plurality of receiving cavities 101 and prevent the plurality of contact springs 13 from moving axially in the receiving cavities 101.

[0096] As shown in Figures 11 to 14, in the illustrated embodiment, the electrical connection member 1 is a bus bar, the connection object 2 is a rechargeable battery cell, the conductive post 21 is an electrode end of the battery cell, and the bus bar is electrically connected to the battery cell via a contact spring 13.

[0097] 11 to 14, in the illustrated embodiment, receiving cavities 101 are formed at both ends of the electrical connection member 1, and the electrical connection module 100 includes two contact springs 13 respectively disposed in the receiving cavities 101 at both ends of the electrical connection member 1. The electrical connection assembly includes a plurality of electrical connection modules 100 and a plurality of battery cells. The electrode ends of adjacent battery cells are inserted into the receiving cavities 101 at both ends of the electrical connection member 1, respectively, and thus the electrode ends of the adjacent battery cells are electrically interconnected.

[0098] However, it should be noted that the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the electrical connection member 1 is a bus bar, the connection object 2 is a rechargeable battery cell, the conductive post 21 is an electrode end of the battery cell, and the bus bar is electrically connected to the battery cell via the contact spring 13.

[0099] It should be understood by those skilled in the art that the above embodiments are illustrative and not restrictive. For example, those skilled in the art can make many modifications to the above embodiments without any contradiction in structure or principle, and can freely combine various features described in different embodiments with each other.

[0100] While several exemplary embodiments have been shown and described, it will be apparent to those skilled in the art that various changes or modifications can be made to these embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the following claims and their equivalents.

[0101] As used herein, elements described in the singular and preceded by the word "a" or "an" should be understood as not excluding a plurality of said elements or steps, unless such exclusion is expressly stated. Furthermore, references to "one embodiment" of the invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Furthermore, unless expressly stated otherwise, embodiments "comprising" or "having" an element or elements having a particular characteristic can include additional such elements that do not have that characteristic.

Claims

1. 1. An electrical connection module comprising: an electrical connection member (1) having a receiving cavity (101) formed therein; a contact spring (13) provided in the receiving cavity (101); Equipped with The electrical connection member (1) has an outer peripheral wall (11) surrounding the receiving cavity (101), an upper wall (12), and a bottom opening (13a) on the opposite side of the upper wall (12) in the axial direction of the receiving cavity (101), The contact spring (13) has an annular shape so that it can be attached in a ring shape to a conductive post (21) of a connection object (2) inserted from the bottom opening (13a), The contact spring (13) is configured to undergo elastic deformation along the radial direction of the receiving cavity (101) to make electrical contact with the inserted conductive post (21) in the radial direction, and therefore the electrical connection member (1) can be electrically connected to the connection object (2) via the contact spring (13).

2. 2. The electrical connection module of claim 1, wherein an upper through hole (102) through which the conductive post (21) can pass is formed in the upper wall (12) of the receiving cavity (101), so that the conductive post (21) inserted from the bottom opening (101a) of the receiving cavity (101) can pass through the upper through hole (102) and through the upper wall (12) of the receiving cavity (101).

3. 2. The electrical connection module of claim 1, further comprising a restricting element (14), the restricting element (14) being annular in shape, attached to the receiving cavity (101), and used to restrict the contact spring (13) in the axial direction of the receiving cavity (101) and prevent the contact spring (13) from moving in the axial direction of the receiving cavity (101).

4. The restricting element (14) has a peripheral wall (141), a bottom wall (142), and an upper opening (104), and a bottom through-hole (103) through which the conductive post (21) can pass is formed in the bottom wall (142) of the restricting element (14); 4. The electrical connection module of claim 3, wherein the bottom wall (142) of the restricting element (14) and the top wall (12) of the receiving cavity (101) are on opposite sides of the axial direction of the receiving cavity (101) and are located above and below the contact spring (13), respectively, so that the contact spring (13) cannot move in the axial direction of the receiving cavity (101).

5. 5. The electrical connection module of claim 4, wherein the outer peripheral surface of the peripheral wall portion (141) of the restricting element (14) is tightly fitted into the inner peripheral surface of the outer peripheral wall (11) of the receiving cavity (101) to fix the restricting element (14) to the receiving cavity (101).

6. 6. The electrical connection module of claim 5, wherein before the conductive post (21) is inserted into the contact spring (13), there is a predetermined gap between the contact spring (13) and the peripheral wall portion (141) of the limiting element (14) that allows the contact spring (13) to float radially in the receiving cavity (101).

7. 7. The electrical connection module of claim 6, wherein after the conductive post (21) is inserted into the contact spring (13), the contact spring (13) is expanded in the radial direction of the receiving cavity (101) by the conductive post (21) and contacts the peripheral wall portion (141) of the restricting element (14).

8. 6. The electrical connection module according to claim 5, wherein the contact spring (13) contacts the peripheral wall (141) of the limiting element (14) before the conductive post (21) is inserted into the contact spring (13).

9. 5. The electrical connection module of claim 4, wherein the upper surface of the peripheral wall portion (141) of the restricting element (14) is pressed against the inner surface of the top wall (12) of the receiving cavity (101), and the bottom wall (142) of the restricting element (14) is pressed against the upper surface (2a) of the connection object (2), thereby positioning the restricting element (14) in the axial direction of the receiving cavity (101).

10. The electrical connection member (1) has a flat connection portion (10), and the outer peripheral wall (11) of the receiving cavity (101) protrudes from the upper surface of the flat connection portion (10); 2. The electrical connection module according to claim 1, wherein the bottom surface of the flat connection portion (10) is configured to abut against the top surface (2a) of the connection object (2), and the bottom opening (101a) of the receiving cavity (101) is located on the bottom surface of the flat connection portion (10).

11. a nut (15) adapted to be threadably connected to the conductive posts (21) passing through the top wall (12) of the receiving cavity (101) to fasten the electrical connection module (100) to the top surface (2a) of the connection object (2); 2. The electrical connection module according to claim 1, wherein when the electrical connection module (100) is tightened to the top surface (2a) of the connection object (2), the nut (15) is pressed against the outer surface of the top wall (12) of the receiving cavity (101).

12. The electrical connection module of claim 11, wherein when the electrical connection module (100) is fastened to the top surface (2a) of the connection object (2), the bottom surface of the electrical connection member (1) is pressed against the top surface (2a) of the connection object (2) or inclined at a predetermined angle relative to the top surface (2a) of the connection object (2).

13. The contact spring (13) a spiral spring (131) wound into a ring shape suitable for attachment to said conductive post (21); A C-shaped elastic ring (132) attached to the spiral spring (131); Including, 13. The electrical connection module according to claim 1, wherein the spiral spring (131) is used to electrically contact the conductive post (21), and the C-shaped elastic ring (132) is used to provide an auxiliary contact force to the spiral spring (131) to increase the electrical contact force between the spiral spring (131) and the conductive post (21).

14. 13. An electrical connection module according to any one of claims 1 to 12, wherein the contact spring (13) comprises a corrugated spring plate wound into a ring shape to fit onto the conductive post (21).

15. An electrical connection module as described in any one of claims 1 to 12, wherein a single receiving cavity (101) is formed in the electrical connection member (1), and the electrical connection module (100) is used to electrically connect to a conductive post (21) of a single connection object (2).

16. 13. The electrical connection module of claim 1, wherein a plurality of receiving cavities (101) are formed in the electrical connection member (1), and the electrical connection module (100) comprises a plurality of contact springs (13) respectively arranged in the plurality of receiving cavities (101) for electrically connecting to conductive posts (21) of a plurality of connection objects (2) and electrically interconnecting the conductive posts (21) of the plurality of connection objects (2).

17. The electrical connection module (100) of claim 16 further comprises a plurality of restricting elements (14) respectively disposed in the plurality of receiving cavities (101) to prevent the plurality of contact springs (13) from moving in the axial direction of the receiving cavities (101).

18. 1. An electrical connection assembly comprising: The electrical connection module (100) according to any one of claims 1 to 17, a connection object (2) having a conductive post (21) for electrical connection; Equipped with The conductive post (21) is inserted into the receiving cavity (101) of the electrical connection member (1), and the contact spring (13) is attached to the inserted conductive post (21) and electrically contacts the conductive post (21), thereby electrically connecting the electrical connection member (1) to the connection object (2) via the contact spring (13).

19. The connection object (2) has an upper surface (2a), the conductive post (21) extends upward from the upper surface (2a) of the connection object (2) by a predetermined height, and the conductive post (21) has a screw thread formed on an end of the conductive post (21); The electrical connection assembly of claim 18, wherein the conductive posts (21) pass through the upper through holes (102) in the upper wall (12) of the receiving cavity (101) and are screwed onto nuts (15) to tighten the electrical connection module (100) to the upper surface (2a) of the connection object (2).

20. 19. The electrical connection assembly according to claim 18, wherein the electrical connection member (1) is a first bus bar, the connection object (2) is a second bus bar, and the first bus bar is electrically connected to the second bus bar via the contact spring (13).

21. 19. The electrical connection assembly according to claim 18, wherein the electrical connection member (1) is a bus bar, the connection object (2) is an electrical device, and the bus bar is electrically connected to the electrical device via the contact spring (13).

22. 19. The electrical connection assembly according to claim 18, wherein the electrical connection member (1) is a bus bar, the connection object (2) is a rechargeable battery cell, the conductive post (21) is an electrode end of the battery cell, and the bus bar is electrically connected to the battery cell via the contact spring (13).

23. The receiving cavities (101) are formed at two ends of the electrical connection member (1), respectively, and the electrical connection module (100) includes two contact springs (13) respectively disposed in the receiving cavities (101) at both ends of the electrical connection member (1); 23. The electrical connection assembly of claim 22, wherein the electrical connection assembly comprises a plurality of electrical connection modules (100) and a plurality of battery cells, and the electrode ends of adjacent battery cells are inserted into the receiving cavities (101) at both ends of the electrical connection member (1), respectively, so that the electrode ends of adjacent battery cells are electrically interconnected.

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