CN207781725U - Connecting terminal and battery pack for battery pack - Google Patents

Abstract

The utility model discloses a kind of connecting terminals and battery pack for battery pack, wherein the connecting terminal for battery pack includes：Stud, internal connection row, conductive nut and the first sealing ring.The stud includes head and bar portion；The internal connection row is set in the bar portion；The conductive nut is threaded in the bar portion and is pressed against that the internal connection row is upper to be electrically connected to be formed, and the shell that the part of the conductive nut exposes the battery pack is suitable for arranging with external connection and is electrically connected；First sealing ring is arranged in the conductive nut on the side of the internal connection row, and first sealing ring is suitable for being clamped between the conductive nut and the internal face of the shell.Connecting terminal assembly is simple, and manufacturing cost is low, and the leakproofness of battery pack can be made more preferable.

Description

Terminal blocks and battery packs for battery packs

technical field

The utility model relates to the technical field of vehicles, in particular to a terminal used for a battery pack and the battery pack.

Background technique

The electrical connection between the traditional power battery pack and the external power distribution box or motor controller is generally in the form of a high-voltage connector. The assembly process of the high-voltage connector is relatively complicated, and the installation requirements for the entire battery pack are relatively high, and due to molds, materials, etc. For reasons such as high manufacturing cost, it is not suitable for 48V battery packs applied to plastic casings.

Utility model content

In view of this, the utility model aims to provide a connection terminal for a battery pack, which has simple assembly, low manufacturing cost, and better sealing performance of the battery pack.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

A terminal for a battery pack, comprising: a stud, the stud includes a head and a rod; an internal connecting row, the internal connecting row is sleeved on the rod; a conductive nut, the conductive The nut is threaded on the rod and pressed against the internal connection row to form an electrical connection, and a part of the conductive nut exposes the shell of the battery pack to be suitable for electrical connection with the external connection row; the first A sealing ring, the first sealing ring is arranged on the side of the conductive nut away from the inner connection row, the first sealing ring is suitable for being clamped between the conductive nut and the inner wall surface of the housing between.

Further, a head flange surrounding the rod is provided on the side of the head connected to the rod, and the inner connection row includes: a sleeve ring, which is sleeved on the on the flange of the head, and the sleeve ring is sandwiched between the conductive nut and the head.

Further, the inner hole of the sleeve ring is an oblong hole, and the shape of the head flange is adapted to the oblong hole so as to prevent the rotation of the sleeve ring relative to the head flange.

Further, the thickness of the sleeve ring is greater than the thickness of the head flange and the side of the sleeve ring facing the conductive nut protrudes from the head flange, so that the sleeve ring and the A recess for installing the second sealing ring is formed between the head flanges.

Further, a sinking groove is provided on the side of the conductive nut facing the sleeve ring, the guiding sinking groove is opposite to the recess along the axial direction of the rod part, and a part of the second sealing ring It is located in the guide sinking groove and the other part is located in the recess.

Further, an upper sinking groove is formed on a side of the conductive nut away from the sleeve ring, and the upper sinking groove is used for installing the first sealing ring.

Further, the inner side of the upper sinker is an annular upper sinker inner peripheral wall and the outer side is an annular upper sinker outer peripheral wall, at least a part of the upper sinker inner peripheral wall passes through the housing to be suitable for connecting the External connection row.

Further, the thickness of the inner peripheral wall of the upper sinker is greater than the thickness of the outer peripheral wall of the upper sinker.

Further, the dimension of the inner peripheral wall of the upper sinker along the axial direction of the rod portion is larger than the dimension of the outer peripheral wall of the upper sinker along the axial direction.

Compared with the prior art, the terminal for the battery pack described in the utility model has the following advantages:

(1) The connection terminal for the battery pack described in the utility model has the advantages of simple assembly, low manufacturing cost, and better airtightness of the battery pack.

Another object of the present utility model is to provide a battery pack, including the above-mentioned terminal for the battery pack, and the battery pack has good sealing performance.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is a schematic structural view of a terminal for a battery pack according to an embodiment of the present invention;

2 is a cross-sectional view of a terminal for a battery pack according to an embodiment of the present invention;

Fig. 3 is an exploded view of a terminal for a battery pack according to an embodiment of the present invention;

Fig. 4 is an exploded view of a terminal for a battery pack according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the structure of a terminal for a battery pack assembled on the battery pack according to an embodiment of the present invention.

Explanation of reference signs:

100-Terminal, 1-Stud, 11-Head, 12-Stud, 2-Internal connecting row, 3-Conductive nut, 4-First sealing ring, 111-Head flange, 21-Sleeve ring , 211-oblong hole, 5-second sealing ring, 6-recess, 31-sinking tank, 32-upper sinking tank, 321-inner peripheral wall of upper sinking tank, 322-outer peripheral wall of upper sinking tank, 7-shell Body, 8-external connection row, 9-compression nut.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

The following describes a terminal 100 for a battery pack according to an embodiment of the present invention with reference to FIGS. 1-5 .

The terminal 100 for a battery pack according to an embodiment of the present invention may include: a stud 1 , an internal connecting row 2 , a conductive nut 3 and a first sealing ring 4 .

As shown in FIGS. 1-5 , the stud 1 includes a head 11 and a stem 12 . The stud 1 is suitable for being fixed on the plastic bracket on the lower casing 7 of the battery pack, and after the installation of the battery pack is completed, the rod 12 is suitable for passing through the upper casing 7 of the battery pack vertically, so as to facilitate contact with external electrical components to connect.

Referring to Fig. 1, the internal connecting row 2 is sleeved on the rod portion 12, and the internal connecting row 2 abuts against the head 11, is electrically connected with the stud 1, and transmits the power of the battery module in the battery pack to the stud. Column 1, and then passed to the outside of the battery pack, and electrically connected with the electrical devices outside the battery pack.

Further, the conductive nut 3 is threaded on the rod portion 12 and pressed against the internal connecting row 2 to form an electrical connection, and a part of the conductive nut 3 exposes the battery pack housing 7 to be suitable for electrical connection with the external connecting row 8 . Specifically, the internal connection row 2 is pressed on the head 11, and the conductive nut 3 and the rod portion 12 are threaded and pressed on the internal connection row 2, thereby, the internal connection row 2, the screw rod and the conductive nut 3 integrally form an electrical connection. connection, when the battery pack is installed, the conductive nut 3 protrudes upwards from the battery pack upper casing 7, and the external connecting row 8 is sleeved on the rod portion 12 exposed outside the battery pack casing 7, and is pressed by the compression nut 9 Close on the conductive nut 3 to complete the electrical connection, thereby transferring the electricity of the battery module in the battery pack to the outside of the battery pack for use by the whole vehicle.

1 and 2, the first sealing ring 4 is arranged on the side of the conductive nut 3 away from the internal connection row 2, and the first sealing ring 4 is suitable for being clamped inside the conductive nut 3 and the housing 7. between walls. Thus, the sealing performance of the battery pack can be improved, and the first sealing ring 4 is arranged on the conductive nut 3, and then clamped between the conductive nut 3 and the housing 7 can effectively prevent rainwater from flowing from the conductive nut 3 and the housing 7. The junction of the battery pack enters the inside of the battery pack and causes damage to the battery pack.

The embodiment of the utility model adopts a 48V plastic shell 7 battery pack, so there is no need to consider the problem that the shell 7 is charged after the battery pack is installed. The traditional way of electrical connection with the outside generally adopts the form of high-voltage connectors, but the form of high-voltage connectors is not suitable for 48V plastic shell 7 battery packs. Therefore, the terminal 100 of the utility model embodiment is more suitable for 48V plastic The shell 7 battery pack is not only simple to assemble and low in manufacturing cost, but also enables better sealing of the battery pack.

According to the terminal 100 for the battery pack according to the embodiment of the present utility model, the terminal 100 is not only easy to assemble, but also has low manufacturing cost, and can make the battery pack better sealed, and is more suitable for 48V plastic casing 7 battery pack.

As shown in FIGS. 2-4 , a head flange 111 surrounding the rod 12 is provided on the side of the head 11 connected to the rod 12 . Specifically, the head flange 111 is concentric with the head 11 , and the cross-sectional area of the head flange 111 is smaller than that of the head 11 .

Preferably, the head 11 and the head flange 111 are adapted to be integrally formed together, thereby making the overall structure of the screw more compact and stronger.

Further, the internal connecting row 2 includes: a sleeve ring 21 sleeved on the head flange 111 , and the sleeve ring 21 is sandwiched between the conductive nut 3 and the head 11 . The sleeve ring 21 is tightly connected with the head 11 and the conductive nut 3 , and then transmits the electricity from the battery module to the screw rod and the conductive nut 3 to form an electrical connection.

Further, referring to Fig. 4, the inner hole of the sleeve ring 21 is an oblong hole 211, and the shape of the head flange 111 is adapted to the oblong hole 211 to prevent the sleeve ring 21 from rotating relative to the head flange 111 Therefore, after the battery pack is installed, it is convenient for the external connecting row 8 to be connected and fixed on the rod portion 12 and the conductive nut 3, so as to prevent the screw from rotating and obstructing the installation of the compression nut 9 when the compression nut 9 is installed and tightened.

As shown in Figure 2, the thickness of the sleeve ring 21 is greater than the thickness of the head flange 111 and the side of the sleeve ring 21 facing the conductive nut 3 protrudes from the head flange 111, so that the sleeve ring 21 and the head protrusion A recess 6 for installing the second sealing ring 5 is formed between the edges 111 .

Further, the side of the conductive nut 3 facing the sleeve ring 21 is provided with a sinking groove 31, the sinking groove 31 is opposite to the recess 6 along the axial direction of the rod portion 12, and a part of the second sealing ring 5 is located in the sinking groove 31 And the other part is located in the recess 6, thereby greatly increasing the sealing effect of the terminal 100, preventing rainwater from entering the battery pack from the junction of the rod 12 and the conductive nut 3, therefore, between the sinking groove 31 and the recess 6 A second sealing ring 5 is arranged between them to provide a good sealing effect.

With reference to the embodiment shown in FIG. 2 and FIG. 4 , an upper sinking groove 32 is formed on the side of the conductive nut 3 away from the sleeve ring 21 , and the upper sinking groove 32 is used for installing the first sealing ring 4 . Setting the upper sinking groove 32 can make the first sealing ring 4 be limited in the upper sinking groove 32, which facilitates the installation and fixing of the first sealing ring 4, and prevents the first sealing ring 4 from being sandwiched between the housing 7 and the battery pack after the installation of the battery pack is completed. When between the conductive nuts 3, the first sealing ring 4 deviates from the conductive nut 3 due to the pressing force, so that the sealing effect is deteriorated.

As shown in FIGS. 1-4 , the inner side of the upper sinker 32 is an annular upper sinker inner peripheral wall 321 and the outer side is an annular upper sinker outer peripheral wall 322 , and at least a part of the upper sinker inner peripheral wall 321 passes through the housing 7 It is suitable for connecting with the external connection bar 8, thereby electrically connecting with the external connection bar 8, and then transmitting the power of the battery pack to the outside of the battery pack.

Further, the thickness of the inner peripheral wall 321 of the upper sinker is greater than the thickness of the outer peripheral wall 322 of the upper sinker. The inner peripheral wall 321 of the upper sinker is a wall that is threadedly connected with the rod portion 12 . Therefore, it is relatively thicker, and the inner peripheral wall 321 of the upper sinker needs to bear a large torsional force to avoid bending of the conductive nut 3 .

Still further, the dimension of the inner peripheral wall 321 of the upper sinker along the axial direction of the rod portion 12 is greater than the dimension of the outer peripheral wall 322 of the upper sinker along the axial direction. Thus, after the battery pack is installed, a part of the inner peripheral wall 321 of the upper sinker groove of the conductive nut 3 protrudes from the housing 7 and is electrically connected to the external connection bar 8 .

The battery pack according to another embodiment of the present utility model includes the terminal 100 for the battery pack described in the above embodiments. Other configurations of the battery pack, such as battery modules, are in the prior art and well known to those skilled in the art, so other configurations of the battery pack will not be described in detail here.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. A terminal (100) for a battery pack, characterized in that it comprises: a stud (1), said stud (1) comprising a head (11) and a shank (12); an internal connection row (2), the internal connection row (2) is sheathed on the rod portion (12); A conductive nut (3), the conductive nut (3) is threaded on the rod (12) and pressed against the internal connection row (2) to form an electrical connection, the conductive nut (3) A part of the shell (7) of the battery pack is exposed to be suitable for electrical connection with the external connection bar (8); The first sealing ring (4), the first sealing ring (4) is arranged on the side of the conductive nut (3) away from the internal connection row (2), the first sealing ring (4) is suitable for It is clamped between the conductive nut (3) and the inner wall surface of the housing (7). 2. The terminal (100) for a battery pack according to claim 1, characterized in that, the side of the head (11) connected to the rod (12) is provided with a ring surrounding the rod The head flange (111) of the part (12), the internal connection row (2) includes: a sleeve ring (21), and the sleeve ring (21) is sleeved on the head flange (111) , and the collar (21) is sandwiched between the conductive nut (3) and the head (11). 3. The terminal (100) for battery pack according to claim 2, characterized in that, the inner hole of the sleeve ring (21) is an oblong hole (211), and the head flange (111) is shaped to fit said oblong hole (211) to resist rotation of said collar (21) relative to said head flange (111). 4. The terminal (100) for battery pack according to claim 2, characterized in that, the thickness of the sleeve ring (21) is greater than the thickness of the head flange (111) and the sleeve The side of the adapter ring (21) facing the conductive nut (3) protrudes from the head flange (111), so that there is a gap between the sleeve ring (21) and the head flange (111) A recess (6) for mounting the second sealing ring (5) is formed. 5. The terminal (100) for a battery pack according to claim 4, characterized in that, the side of the conductive nut (3) facing the sleeve ring (21) is provided with a sinking groove (31 ), the sinking groove (31) is opposite to the recess (6) along the axial direction of the rod (12), and a part of the second sealing ring (5) is located in the sinking groove (31 ) and the other part is located in the recess (6). 6. The terminal (100) for a battery pack according to claim 2, characterized in that an upper sinker ( 32), the upper sinker (32) is used for installing the first sealing ring (4). 7. The terminal (100) for a battery pack according to claim 6, characterized in that, the inner side of the upper sinker (32) is an annular upper sinker inner peripheral wall (321) and the outer side is an annular The outer peripheral wall (322) of the upper sinker, at least a part of the inner peripheral wall (321) of the upper sinker passes through the casing (7) so as to be suitable for connecting to the external connecting row (8). 8. The terminal (100) for a battery pack according to claim 7, characterized in that, the thickness of the inner peripheral wall (321) of the upper sinker is greater than the thickness of the outer peripheral wall (322) of the upper sinker. 9. The terminal (100) for a battery pack according to claim 7, characterized in that, the size of the inner peripheral wall (321) of the upper sinker along the axial direction of the rod (12) is larger than the The size of the outer peripheral wall (322) of the upper sinker along the axial direction. 10. A battery pack, characterized in that it comprises the connection terminal (100) for the battery pack according to any one of claims 1-9.