Connection structure and battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a connecting structure and a battery pack. According to the connecting structure provided by the utility model, the mounting groove is formed in the wire outlet seat, the top and one side part of the mounting groove are opened, and the two openings are communicated with each other, so that after the mounting part of the metal insert is placed into the mounting groove from the side part opening, as the side wall surface inside the mounting groove and the side wall surface outside the mounting part are arranged in a shape-adaptive manner, the mounting part can be mounted in the mounting groove; the metal inserts are arranged at intervals to form gaps, the positions of the metal inserts are finely adjusted under the action of external force, meanwhile, the injection molding process is omitted, and the connecting structure is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a connection structure and a battery pack. Background Art

[0002] A battery pack includes a plurality of battery cells and a housing for assembling the plurality of battery cells. After assembly, the battery pack is provided with a set of output positive electrode and output negative electrode. And a bus bar is added to realize the electrical connection of the output positive electrode and output negative electrode between multiple battery packs. During actual use, an outlet base is provided on the battery pack, and a metal insert is provided on the base body of the outlet base. The bus bar is fixed on the outlet base and electrically connected to the output positive electrode or output negative electrode through the metal insert.

[0003] In the conventional technology, the metal insert in the battery pack outlet base is generally integrally formed with the outlet base by insert injection molding. However, with such a setting, after injection molding, the position of the metal insert is fixedly set, which is not conducive to adjusting the position of the metal insert during actual assembly, resulting in the metal insert being unable to pass through the through hole provided on the bus bar, and thus being not conducive to realizing the fixation of the outlet base and the bus bar. Summary of the Utility Model

[0004] In view of this, the utility model provides a connection structure and a battery pack to solve the problem that it is not convenient to adjust the position of the metal insert after integral injection molding with the outlet base.

[0005] In a first aspect, the utility model provides a connection structure, including an outlet base and a metal insert. Specifically, the outlet base is provided with an installation groove, the top and side of the installation groove are both open and the two openings are connected; the metal insert is provided with an installation part for being installed in the installation groove; wherein, the side wall surface inside the installation groove is conformally set with the side wall surface outside the installation part and is spaced apart.

[0006] Beneficial effects: By providing an installation groove on the outlet base, and making both the top and side of the installation groove open and the two openings connected, after the installation part of the metal insert is placed into the installation groove from the side opening, since the side wall surface inside the installation groove is conformally set with the side wall surface outside the installation part and is spaced apart to form a gap, under the action of an external force, the position of the metal insert can be finely adjusted. At the same time, the injection molding process is also omitted, making the connection structure more practical.

[0007] In an optional implementation manner, the installation groove includes a limiting groove; the installation part includes a limiting block, the limiting block is installed in the limiting groove, and the limiting block includes a top contact surface and a bottom contact surface, and the top contact surface and the bottom contact surface are respectively in contact with the top wall surface and the bottom wall surface of the limiting groove.

[0008] Beneficial effect: By making the top contact surface and the bottom contact surface of the mounting part of the metal insert contact with the top wall and the bottom wall of the limiting groove respectively, after the mounting part is installed in the limiting groove, the mounting part is prevented from moving in the vertical direction in the limiting groove, thereby ensuring the reliability of the connection relationship between the metal insert and the outlet seat after installation.

[0009] In an optional embodiment, the limit block further includes a plurality of side contact surfaces, at least one of which is a plane.

[0010] Beneficial effect: By providing the limit block with multiple side contact surfaces, and providing at least one side contact surface in the form of a plane, since the side wall surface inside the limit groove is configured to conform to the plane, after the limit block is placed in the limit groove, a plane contact is formed. When the metal insert is inserted into the bus and then tightened with the locking piece, the plane contact can prevent the limit block from rotating with the locking piece.

[0011] In an optional embodiment, the installation groove also includes a receiving groove, which is arranged above the limiting groove in the height direction, and the top and side of the receiving groove are both open and the two openings are connected; the installation part also includes a connecting block, which is arranged above the limiting block in the height direction, and the connecting block is connected to the limiting block, and the connecting block is in the receiving groove.

[0012] Beneficial effect: By providing a receiving groove at the installation groove, and setting the receiving groove above the limit groove, the installation part is also provided with a connecting block for directly or indirectly connecting the limit block to the bus, so that the connecting structure has the ability to drive the limit block to move when the connecting block moves.

[0013] In an optional embodiment, the accommodating groove is a waist-shaped groove, and the projection of the accommodating groove in the vertical direction falls within the projection of the limiting groove in the vertical direction.

[0014] In an optional embodiment, the connection structure also includes a wire harness fixing, which is installed on one side of the wire outlet seat and is staggered with the installation groove. The wire harness fixing is used to fix the wire harness or a connector used when connecting two adjacent wire harnesses.

[0015] In an optional embodiment, the metal insert further includes a transition portion, which is disposed above the mounting portion and fixedly connected to the mounting portion and is used to penetrate a mounting hole for the busbar.

[0016] Beneficial effect: By providing the metal insert with a transition part, during installation, the transition part is passed through the mounting hole on the bus, and then the position of the metal insert is fine-tuned, and fastening measures can be used to fix the bus and the outlet seat.

[0017] In an optional embodiment, the connection structure further includes a busbar and a locking member. The busbar is provided with a mounting hole, and the mounting hole is used for the metal insert to pass through; the locking member is located on the side of the busbar away from the outlet seat, and the locking member is installed on the metal insert, and the locking member is used to install the busbar on the outlet seat.

[0018] In an optional embodiment, the adapter portion of the metal insert in the outlet seat is provided with an external thread structure; the locking member is provided with an internal thread structure adapted to the external thread structure, and the locking member is threadedly connected to the adapter portion of the metal insert.

[0019] In a second aspect, the utility model further provides a battery pack, comprising the connection structure in the first aspect.

[0020] Beneficial effect: Since the battery pack includes the connection structure, it has the same effect as the connection structure and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 1 A schematic diagram of a partial structure of a connection structure provided by the utility model;

[0023] Figure 2 A schematic diagram of a partial structure of a connection structure provided by the utility model;

[0024] Description of reference numerals:

[0025] 1. Wire outlet seat; 11. Installation slot;

[0026] 2. Metal insert; 21. Mounting part; 211. Limiting block; 212. Connecting block; 22. Adapter;

[0027] 3. Busbar; 311. Mounting hole;

[0028] 4. Locking parts;

[0029] 5. Wiring harness fixings. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "vertical", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0032] In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0034] Refer to Figures 1 to 2 , Figure 1 which shows a partial structural schematic diagram of the connection structure provided by the embodiments of this application; Figure 2 which shows a partial structural schematic diagram of the connection structure provided by the embodiments of this application. Among them, Figure 1 is an exploded view of the connection structure in the vertical direction; Figure 2 the arrow direction in Figure 2 is the installation direction of the metal insert 2, and the direction of removing the metal insert 2 is opposite to the

[0035] Below, with reference to Figure 1 and Figure 2 , the embodiments of the present utility model will be described.

[0036] In a first aspect, the present utility model provides a connection structure. As shown in Figure 1 and Figure 2 , the connection structure includes an outlet base 1 and a metal insert 2.

[0037] Specifically, the wire outlet base 1 is provided with an installation groove 11. The top and one side of the installation groove 11 are both open and the two openings are connected. The metal insert 2 is provided with an installation part 21 for being installed in the installation groove 11. Among them, the side wall surface inside the installation groove 11 is conformally arranged with the side wall surface outside the installation part 21 and is spaced apart, so as to leave a gap between the installation groove 11 and the installation part 21 for fine adjustment during subsequent installation processes.

[0038] By using the technical solution of this embodiment, an installation groove 11 is provided on the wire outlet base 1. At the same time, the top and side of the installation groove 11 are both open and the two openings are connected. After the installation part 21 of the metal insert 2 is placed into the installation groove 11 from the side opening, due to the conformal arrangement and the spaced-apart arrangement of the side wall surface inside the installation groove 11 and the side wall surface outside the installation part 21, under the action of an external force, the position of the metal insert 2 is finely adjusted. Compared with the form in the existing solution where the metal insert 2 and the wire outlet base 1 are integrally injection-molded, in this connection structure, since the metal insert 2 and the wire outlet base 1 are of a split structure, the process of integral injection molding is also omitted, reducing the processing cost and making this connection structure more practical.

[0039] Preferably, a gap is left between each side wall surface inside the installation groove 11 and each side wall surface outside the installation part 21 for subsequent fine adjustment of the position of the metal insert 2.

[0040] It can be explained that for the connection structure provided in this application, the structure of the installation groove 11 is not specifically limited.

[0041] As one of the implementation manners, the installation groove 11 is a combined groove structure. For example, it is composed of two or more structural grooves spaced apart in the vertical direction and / or the horizontal direction.

[0042] Preferably, in this application, only two structural grooves arranged in the vertical direction are taken as an example.

[0043] Exemplarily, in this embodiment, the installation groove 11 includes a limiting groove and a receiving groove.

[0044] Specifically, the installation part 21 includes a limiting block 211. The limiting block 211 is installed in the limiting groove, and the limiting block 211 includes a top contact surface and a bottom contact surface. The top contact surface and the bottom contact surface are respectively in contact with the top wall surface and the bottom wall surface of the limiting groove.

[0045] By using the technical solution of this embodiment, by making the top contact surface and the bottom contact surface of the installation part 21 of the metal insert 2 be respectively in contact with the top wall surface and the bottom wall surface of the limiting groove, after the installation part 21 is installed in the limiting groove, the installation part 21 is prevented from moving in the vertical direction in the limiting groove, ensuring the reliability of the connection relationship after the metal insert 2 and the wire outlet base 1 are installed.

[0046] It should be noted that, in this embodiment, the limit block 211 further includes a plurality of side contact surfaces, at least one of which is a plane.

[0047] By using the technical solution of this embodiment, the stop block 211 is provided with a plurality of side contact surfaces, and at least one side contact surface is set in the form of a plane. Since the side wall surface inside the stop groove is configured to conform to the plane, after the stop block 211 is placed in the stop groove, a plane contact is formed. When the metal insert 2 is inserted into the bus 3 and then screwed with the locking member 4, the plane contact can prevent the stop block 211 from rotating with the locking member 4.

[0048] Exemplarily, the receiving groove is arranged above the limiting groove in the height direction, the top and the side of the receiving groove are both open and the two openings are connected; the mounting portion 21 also includes a connecting block 212, the connecting block 212 is arranged above the limiting block 211 in the height direction, and the connecting block 212 is connected to the limiting block 211, and the connecting block 212 moves in the receiving groove.

[0049] By utilizing the technical solution of this embodiment, a receiving groove is provided at the installation groove 11, and the receiving groove is arranged above the limiting groove. At this time, the installation part 21 is also provided with a connecting block 212, which is used to directly or indirectly connect the limiting block 211 to the bus 3, so that the connecting structure has the ability to drive the limiting block 211 to move when the connecting block 212 moves.

[0050] Of course, in another embodiment, the installation slot 11 is only composed of a single slot. For example, the installation slot 11 only includes a limiting slot for limiting the vertical movement of the limiting block 211.

[0051] It can be explained that, in order to facilitate the adjustment, the receiving groove is made into a waist-shaped groove, for example, a U-shaped groove.

[0052] Further, by Figure 2 It can be seen that the projection of the connecting block 212 in the vertical direction falls within the projection of the limiting block 211 in the vertical direction, so that the projection of the receiving groove in the vertical direction falls within the projection of the limiting groove in the vertical direction, ensuring that the mounting portion 21 can be installed in the mounting groove 11. Optionally, the connecting block 212 is circular and the limiting block 211 is square.

[0053] like Figure 1 and Figure 2 As shown, in the connection structure provided by the present application, the metal insert 2 also includes a transition portion 22, which is arranged above the mounting portion 21 and fixedly connected to the mounting portion 21, and the transition portion 22 is used to penetrate the mounting hole 311 of the bus 3.

[0054] By utilizing the technical solution of this embodiment, the metal insert 2 is provided with a transition portion 22. During installation, the transition portion 22 is passed through the mounting hole 311 on the bus 3, and then the position of the metal insert 2 is fine-tuned to complete the fastening, thereby achieving the fixation of the bus 3 and the outlet seat 1.

[0055] like Figure 1 and Figure 2 As shown, the connection structure provided in the present application further includes a bus bar 3 and a locking member 4 .

[0056] Specifically, the bus 3 is provided with a mounting hole 311, which is used for the metal insert 2 to pass through; the locking piece 4 is located on the side of the bus 3 away from the outlet seat 1, and the locking piece 4 is installed on the metal insert 2, and the locking piece 4 is used to install the bus 3 on the outlet seat 1.

[0057] It can be explained that the connection structure provided in the present application does not specifically limit the connection method between the busbar 3 and the outlet socket 1 .

[0058] As one of the implementation modes, in this implementation mode, the adapter portion 22 of the metal insert 2 in the outlet seat 1 is provided with an external thread structure; the locking member 4 is provided with an internal thread structure adapted to the external thread structure, and the locking member 4 is threadedly connected to the adapter portion 22 of the metal insert 2.

[0059] Furthermore, in this embodiment, the mounting hole 311 is a circular through hole, and the adapter portion 22 is a cylindrical structure.

[0060] Of course, in other optional embodiments, riveting can also be used. For example, the end of the adapter 22 away from the limit block 211 has a riveting hole, and the end is inserted into the mounting hole 311 and then riveted.

[0061] like Figure 1 and Figure 2 As shown, the connection structure provided by the present application also includes a wire harness fixing part 5, in which the wire harness fixing part 5 is installed on one side portion of the wire outlet seat 1, and the wire harness fixing part 5 is staggered with the installation groove 11, and the wire harness fixing part 5 is used to fix the relevant wire harness in the battery pack or the connector used when connecting two adjacent wire harnesses.

[0062] Preferably, in the present application, only the example of fixing the wire harness by the wire harness fixing member 5 is used for illustrative description.

[0063] Specifically, two clamping parts, such as two vertically arranged clamping walls, are arranged inside the wire harness fixing member 5. In this case, the space between the two clamping parts is used to accommodate and fix the wire harness.

[0064] When installing the connection structure provided by the present application, the metal insert 2 is taken out and the posture of the metal insert 2 is adjusted until the posture of the metal insert 2 is set to the form in which the limit block 211 is located at the bottom and the adapter 22 is located at the top. Then, the limit block 211 of the metal insert 2 is placed in the limit groove, and the connection block 212 is placed in the receiving groove, and then the bus 3 is taken out and placed above the outlet seat 1 according to the preset position, and then the position of the adapter 22 of the metal insert 2 is finely adjusted until the adapter 22 can be smoothly inserted into the installation hole 311, and then the bus 3 is lowered and screwed to the outside of the adapter 22 with a nut until it is tightened.

[0065] On the other hand, a battery pack is provided, comprising the connection structure in the first aspect.

[0066] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A connection structure, characterized in that: include: A wire outlet seat (1), the wire outlet seat (1) being provided with a mounting groove (11), the top and one side of the mounting groove (11) being both open, and the two openings being connected; A metal insert (2), wherein the metal insert (2) is provided with a mounting portion (21), and the mounting portion (21) is used to be mounted in the mounting groove (11); The side wall surface inside the installation groove (11) and the side wall surface outside the installation portion (21) are configured to be conformal and spaced apart.

2. The connection structure according to claim 1, characterized in that: The installation groove (11) comprises a limiting groove; The mounting portion (21) comprises a limit block (211), the limit block (211) is mounted in the limit groove, and the limit block (211) comprises a top contact surface and a bottom contact surface, the top contact surface and the bottom contact surface are in contact with a top wall surface and a bottom wall surface of the limit groove respectively.

3. The connection structure according to claim 2, characterized in that: The limiting block (211) further comprises a plurality of side contact surfaces, at least one of which is a plane.

4. The connection structure according to claim 2, characterized in that: The installation groove (11) further comprises a receiving groove, which is arranged above the limiting groove in the height direction, and the top and the side of the receiving groove are both open and the two openings are connected; The mounting portion (21) further comprises a connecting block (212), the connecting block (212) being arranged above the limiting block (211) in the height direction, the connecting block (212) being connected to the limiting block (211), and the connecting block (212) being located in the containing groove.

5. The connection structure according to claim 4, characterized in that: The accommodating groove is a waist-shaped groove, and the projection of the accommodating groove in the vertical direction falls within the projection of the limiting groove in the vertical direction.

6. The connection structure according to claim 5, characterized in that: Also includes: A wire harness fixing part (5), the wire harness fixing part (5) is installed on one side of the outlet seat (1), and the wire harness fixing part (5) and the installation groove (11) are staggered, and the wire harness fixing part (5) is used to fix the wire harness or a connector used when connecting two adjacent wire harnesses.

7. The connection structure according to any one of claims 1 to 6, characterized in that: The metal insert (2) further comprises a transition portion (22), wherein the transition portion (22) is arranged above the mounting portion (21) and is fixedly connected to the mounting portion (21) and is used to penetrate the mounting hole (311) of the busbar (3).

8. The connection structure according to any one of claims 1 to 6, characterized in that: Also includes: A busbar (3), wherein the busbar (3) is provided with a mounting hole (311), and the mounting hole (311) is used for the metal insert (2) to pass through; A locking piece (4), the locking piece (4) is located on a side of the busbar (3) facing away from the outlet seat (1), and the locking piece (4) is mounted on the metal insert (2), and the locking piece (4) is used to mount the busbar (3) on the outlet seat (1).

9. The connection structure according to claim 8, characterized in that: The adapter portion (22) of the metal insert (2) in the outlet seat (1) is provided with an external thread structure; The locking piece (4) is provided with an internal thread structure adapted to the external thread structure, and the locking piece (4) is threadedly connected to the transition portion (22) of the metal insert (2).

10. A battery pack, characterized in that: The invention comprises the connection structure according to any one of claims 1 to 9.

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