CN216529239U

CN216529239U - Battery pack lead-out terminal assembly and battery pack

Info

Publication number: CN216529239U
Application number: CN202122960638.8U
Authority: CN
Inventors: 赵冬
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-13
Anticipated expiration: 2031-11-29

Abstract

The application relates to the technical field of batteries and discloses a battery pack leading-out end component and a battery pack. The battery pack leading-out end assembly comprises a bus bar and an adapter, wherein the adapter comprises a top surface facing one side of the top of the battery pack and a side surface vertical to the top surface; the top surface of the adapter is used for being connected with the conductive bar, and the conductive bar is used for being electrically connected with the outside of the battery pack; the busbar is perpendicular with the top surface of adaptor, including first portion and second portion, and the first portion links to each other with the side of adaptor, and the second portion is used for linking to each other with the utmost point post of tip battery. In the battery pack leading-out end component provided by the application, the leading-out end component of the battery pack can be simultaneously connected with the conductive bar and the terminal on the side face of the end battery, so that the battery pack is suitable for the battery pack with the terminal arranged on the side face of the battery, the leading-out end component can be tightly attached to the conductive bar and the terminal of the battery, the overcurrent effect is good, and the input efficiency and the output efficiency of the battery pack can be improved; in addition, the bus bar in the leading-out end component is simple in shape and convenient for batch production.

Description

Battery pack lead-out terminal assembly and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack leading-out end assembly and a battery pack.

Background

In the related art, a busbar is often used as a high-voltage leading-out terminal of a battery pack, specifically, a pole in a conventional battery pack is located at the top of a battery, one end of the busbar is connected with the pole arranged at the top of the battery at the end, and the other end of the busbar extends onto a protective support and is fixedly connected with the protective support and a conductive bar through a connecting piece. However, when the position of the terminal of the end battery in the battery pack changes, for example, when the terminal is disposed on the side surface of the battery, if the busbar is still used to connect with the terminal and the conductive bar at the same time, it is difficult, for example, the structure of the busbar is complicated, the forming process is complicated, and the installation is also difficult; therefore, the conventional battery pack lead-out terminal is not suitable for the case where the terminal of the end cell is disposed at the side of the cell.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery pack leading-out end component and a battery pack, which are used for improving the connection mode among a leading-out end, a protection support and a conducting bar in the battery pack.

In one aspect, the present application provides a battery pack outlet assembly comprising a busbar and an adapter, the adapter comprising a top surface facing a top side of the battery pack and a side surface perpendicular to the top surface; the top surface of the adapter is used for being connected with the conductive bar, and the conductive bar is used for being electrically connected with the outside of the battery pack; the busbar is perpendicular with the top surface of adaptor, includes first portion and second portion, and the first portion links to each other with the side of adaptor, and the second portion is used for linking to each other with the utmost point post of end battery.

The battery pack leading-out terminal assembly comprises an adapter and a bus bar, wherein the adapter is provided with a horizontally arranged top surface and a vertically arranged side surface, the top surface is used for being connected with a conductive bar, the flow area can be ensured, and the connection operation is convenient; the side surface of the bus bar is connected with the bus bar, and the whole bus bar is vertical to the top surface of the adapter, namely the whole bus bar is vertically arranged like the side surface of the adapter, so that the bus bar is convenient to connect with the side surface of the adapter and operate, the shape of the bus bar is simple, the forming process is simple, and batch production is facilitated; moreover, because the side surface of the battery is vertically arranged, the vertically arranged bus bar can be directly connected with the pole on the side surface of the battery; therefore, the adaptor and the bus bar can be connected with the conducting bar and the terminal on the side surface of the battery at the end part at the same time, so that a leading-out end of the battery pack, which is arranged on the side surface of the battery aiming at the terminal, is formed; specifically, for example, the first portion and the second portion of busbar are vertical, the second portion of busbar is laminated with the utmost point post on the battery side and is linked to each other, the first portion of busbar is laminated with the side of adaptor and is linked to each other, the top surface of adaptor is laminated with electrically conductive row and is linked to each other, so, both realized setting up the design of leading out the end subassembly of the group battery on the side to utmost point post, can also guarantee that the electric current is in proper order via utmost point post, the overcurrent area and the overcurrent effect of leading out the end subassembly to electrically conductive row, improve the input of group battery, output efficiency.

In another aspect, the present application further provides a battery pack, which includes a plurality of batteries and the battery pack terminal assembly; the battery pack lead-out terminal assembly is connected to a terminal post of an end cell of the plurality of cells.

The application provides a group battery can be for the battery row in battery module or the battery package, and the leading-out terminal subassembly of group battery can link to each other with leading electrical drainage and the group battery on the terminal battery side simultaneously, is applicable to the group battery of utmost point post setting in the battery side, and should lead out the terminal subassembly and can closely laminate with leading electrical drainage and battery utmost point post, and it is better to overflow the effect, and then, the input of this kind of group battery, output efficiency are higher.

Drawings

For a better understanding of the utility model, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and some relevant components may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art.

Fig. 1 is an exploded view of a lead-out terminal assembly of a battery pack according to an embodiment of the present invention;

fig. 2 is a schematic view of a part of a structure of a battery pack according to an embodiment of the present invention;

fig. 3 is a schematic view of a part of a structure of a battery pack according to another embodiment of the present invention;

fig. 4 is a schematic view of a part of a structure of a battery pack according to another embodiment of the present invention;

fig. 5 is a schematic diagram of connection between a battery pack and a battery pack according to an embodiment of the present invention;

fig. 6 is a schematic view of a partial structure of a battery pack according to an embodiment of the present invention.

Reference numerals:

1-a busbar; 11-a first part; 12-a second part; 13-a third portion; 14-a second clamping structure;

2-an adapter; 20-a top surface; 21-flank; 22-a first snap-fit structure; 23-a threaded hole;

24-a limiting groove; 3-protecting the support; 4-an end frame; 5-pole column; 6-a battery;

7-a conductive bar; 8-a connector; 9-a battery module; 10-a box body.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

The present application provides a battery pack terminal assembly, as shown in fig. 1, 2, 3 and 5, the battery pack terminal assembly comprising a busbar 1 and an adaptor 2, the adaptor 2 comprising a top surface 20 facing a top side of the battery pack and a side surface 21 perpendicular to the top surface 20; the top surface 20 of the adaptor 2 is adapted to be connected to the conducting bar 7, the conducting bar 7 being adapted to be electrically connected to the outside of the battery pack; the busbar 1 is perpendicular to the top surface 20 of the adaptor 2 and comprises a first portion 11 and a second portion 12, the first portion 11 being connected to a side surface 21 of the adaptor 2, the second portion 12 being intended to be connected to the pole 5 of the end battery 6.

As shown in fig. 5 and 6, the battery pack may be the battery module 9 or a battery row. Specifically, the battery pack comprises a plurality of batteries 6, the plurality of batteries 6 can be arranged in a box body 10 of the battery pack after forming a battery module 9, and the battery module 9 comprises end plates and side plates for fixing the plurality of batteries 6; alternatively, the plurality of batteries 6 in the battery pack may be directly arranged in the case 10 of the battery pack, and the battery array may be fixed by the case 10 without including the end plates and the side plates. The 'battery pack lead-out terminal' is an output terminal of the battery pack after the plurality of batteries 6 are connected, and is used for outputting the electric quantity of the whole battery pack. The terminal assembly is typically connected to the terminal post 5 of the end cell 6 of the battery pack, and the terminal assembly of the battery pack is typically connected to the conducting bar 7 and to a distribution box or other battery pack via the conducting bar 7, for example, fig. 5 is a schematic diagram of the connection between two battery packs via the conducting bar 7. Conventional battery pack terminal assemblies are implemented using sheet metal formed buss bars 1. The conventional conductive bar 7 is generally a copper bar, but is not limited to a copper bar, and can also be an aluminum bar and other conductive pieces.

The battery pack leading-out end assembly comprises an adapter piece 2 and a bus bar 1, wherein the adapter piece 2 is provided with a horizontally arranged top surface 20 and a vertically arranged side surface 21, the top surface 20 is used for being connected with a conductive bar 7, the flow area can be ensured, and the connection operation is convenient; the side surface 21 is connected with the bus bar 1, the whole bus bar 1 is perpendicular to the top surface 20 of the adapter piece 2, namely the whole bus bar 1 is vertically arranged like the side surface 21 of the adapter piece 2, so that the bus bar 1 is convenient to connect with the side surface 21 of the adapter piece 2, the shape of the bus bar 1 is simple, the molding process is simple, and batch production is facilitated; moreover, since the side surfaces of the battery 6 are vertically arranged, the vertically arranged bus bar 1 can be directly connected with the pole 5 on the side surface of the battery 6, specifically, the side surfaces of the battery 6 refer to four surfaces except the top surface and the bottom surface; therefore, the adaptor 2 and the bus bar 1 can be connected with the conducting bar 7 and the pole 5 on the side surface of the end battery 6 at the same time, so that a leading-out end of the battery pack arranged on the side surface of the battery 6 corresponding to the pole 5 is formed; specifically, for example, the first portion 11 and the second portion 12 of the busbar 1 are both vertically arranged, the second portion 12 of the busbar 1 is attached to and connected to the terminal 5 on the side surface of the battery 6, the first portion 11 of the busbar 1 is attached to and connected to the side surface 21 of the adapter 2, and the top surface 20 of the adapter 2 is attached to and connected to the conductive bar 7, so that the design of the terminal assembly of the battery pack with the terminal 5 arranged on the side surface is realized, and meanwhile, the overcurrent area and the overcurrent effect of current flowing from the terminal 5 and the terminal assembly to the conductive bar 7 in sequence can be ensured, and the input and output efficiency of the battery pack is improved.

In some embodiments, as shown in fig. 1 and 2, the adaptor 2 is provided with a first engaging structure 22, the first portion 11 of the busbar 1 is provided with a second engaging structure 14, and the first engaging structure 22 is engaged with the second engaging structure 14.

Specifically, the side surface 21 of the adaptor 2 is parallel to the plane of the first portion 11 of the busbar 1, and the first engaging structure 22 arranged on the side surface 21 and the second engaging structure 14 on the busbar 1 can be tightly engaged, so that the adaptor 2 and the busbar 1 can be fixedly connected, the positioning of the adaptor 2 and the busbar 1 is facilitated, and the electrical connection performance and the overcurrent capacity of the leading-out terminal assembly are ensured.

For example, as shown in fig. 1 and fig. 2, the first engaging structure 22 disposed on the side surface 21 of the adaptor 2 is a protrusion, the second engaging structure 14 disposed on the busbar 1 is an opening, and the protrusion and the opening are engaged with each other, so that the side surface of the adaptor 2 and the busbar 1 can be tightly attached to each other, and then a laser side seam welding process can be performed at a joint of the two, so as to further enhance the connection strength between the two.

Of course, the first engaging structure 22 and the second engaging structure 14 are not limited to the above, or for example, the first engaging structure 22 provided on the side surface 21 of the adaptor 2 may be a groove, and the second engaging structure 14 provided on the busbar 1 may be a protrusion.

In some embodiments, as shown in fig. 1, 2 and 5, the adaptor 2 is cylindrical, a threaded hole 23 is formed on one side of the top surface 20 of the adaptor 2, and the conductive bar 7 is fixedly connected to the adaptor 2 through a connecting member 8 inserted into the threaded hole 23.

Specifically, the adaptor 2 is a columnar structure, a threaded hole 23 can be formed in the top surface 20, the conductive bar 7 is generally provided with a mounting hole, the connecting piece 8 can be a bolt, and the connecting piece 8 can penetrate through the mounting hole of the conductive bar 7 and be inserted into the threaded hole 23, so that the conductive bar 7 is connected with the adaptor 2. Preferably, the adaptor 2 is embedded with a steel wire thread sleeve which acts as a nut, so that the connection strength of the adaptor 2 and the conductive bar 7 can be improved. In the prior art, generally, a threaded hole 23 is formed in a protection support 3, mounting holes are formed in a conductive bar 7 and a leading-out end, and the conductive bar 7, the mounting holes of the leading-out end and the threaded hole 23 of the protection support 3 are sequentially inserted through a connecting piece 8 to realize the fixed connection of the conductive bar 7, the leading-out end and the threaded hole 23, and under the condition, if the protection support 3 is displaced relative to the conductive bar 7 and the leading-out end, so that the threaded hole 23 and the mounting hole are not aligned correctly, the connecting piece 8 cannot be normally mounted easily; in the embodiment provided by the application, the conductive bar 7 is directly connected with the adapter piece 2 without being connected with the protection support 3, so that even if the protection support 3 and the conductive bar 7 and the leading-out terminal have relative displacement, the connection yield between the conductive bar 7 and the leading-out terminal cannot be influenced, and the overcurrent capacity of the battery pack leading-out terminal assembly is ensured.

In some embodiments, as shown in fig. 1, 2, 5 and 6, in a direction perpendicular to the top surface 20 of the adaptor 2, the top surface 20 of the adaptor 2 is higher than the first portion 11 of the busbar 1, the busbar 1 is a sheet metal structure formed by bending a metal sheet, each portion of the sheet metal structure is a sheet structure, and each portion of the busbar 1 is vertically arranged; the top surface 20 of the adapter 2 is higher than the first portion 11 of the busbar 1, i.e. the top surface 20 of the adapter 2 exceeds the edge of the first portion 11 of the busbar 1; specifically, the conductive bar 7 is connected to the top surface 20 of the adaptor 2, the first portion 11 of the bus bar 1 is connected to the side surface 21 of the adaptor 2, and if the top surface 20 of the adaptor 2 is lower than the first portion 11 of the bus bar 1, when the conductive bar 7 is connected to the top surface 20 of the adaptor 2, the first portion 11 of the bus bar 1 may interfere with the conductive bar 7, so that the conductive bar 7 cannot be tightly attached to the top surface 20 of the adaptor 2, and the connection effect is poor; the top surface 20 of the adapter 2 is thus designed to be higher than the first portion 11 of the busbar 1, so that the busbar 1 is prevented from interfering with the connection between the busbar 7 and the top surface 20 of the adapter 2, ensuring the tightness and overcurrent capacity of the connection.

The battery pack can be a battery module 9 or a battery row, wherein the battery pack is arranged in a battery pack, one side surface of the battery, facing a cover plate of the battery module 9 or an upper cover of the battery pack, is a top surface of the battery, and the surface vertically connected with the top surface is a side surface.

In some embodiments, as shown in fig. 1, 3, 4 and 6, the first portion 11 of the busbar 1 is parallel to the second portion 12, the second portion 12 being for connection to a battery post disposed on the large face of the battery. Specifically, the first portion 11 and the second portion 12 of the busbar 1 are substantially parallel to each other, and the acute angle therebetween is not necessarily 0 degree, but may have a certain angular deviation, for example, a deviation of 0 to 5 degrees.

Illustratively, the busbar 1 further comprises a third portion 13, the third portion 13 being connected between the first portion 11 and the second portion 12 and being perpendicular to the first portion 11 and the second portion 12; specifically, the third portion 13 is substantially perpendicular to the first portion 11 and the second portion 12, and the acute angle therebetween is not necessarily 90 degrees, but may have a certain angular deviation, for example, a deviation of 0 to 5 degrees.

Illustratively, the first portion 11, the second portion 12 and the third portion 13 are all perpendicular to the top surface of the adaptor; the second portion 12 is intended to be connected to the pole 5 of the battery 6 arranged on the large face of the battery.

Specifically, the battery large surface refers to the surface with the largest area among six surfaces of the battery 6, the batteries 6 in the battery pack are arranged in the direction perpendicular to the battery large surface, and the battery large surface faces the end plate of the battery module 9 or the side plate of the battery pack and belongs to the side surface of the battery 6. In this embodiment, the terminal 5 of the battery 6 is disposed on the large surface of the end battery 6, the second portion 12 of the bus bar 1 is used for connecting with the terminal 5 of the battery 6, the second portion 12 is perpendicular to the large surface of the battery, the first portion 11 of the bus bar 1 is parallel to the second portion 12, that is, the first portion 11 and the second portion 12 of the bus bar 1 are both perpendicular to the large surface of the battery, so the second portion 12 of the bus bar 1 can be attached to the side surface of the terminal 5 of the battery 6, the contact area between the bus bar 1 and the terminal 5 is ensured, the overcurrent capacity at the joint of the bus bar 1 and the terminal 5 is improved, meanwhile, the welding area between the bus bar 1 and the terminal 5 of the battery 6 can be improved, and the connection strength between the bus bar 1 and the terminal 5 is enhanced. The third portion 13 is perpendicular to the first portion 11 and the second portion 12, that is, the third portion 13 is parallel to the large surface of the battery, that is, the third portion 13 is aligned with the extending direction of the large surface of the battery; the busbar 1 can be moved along the extension of the large face of the battery so that the second part 12 can be brought into close contact with the pole 5 of the battery 6, while the adaptor 2 connected to the first part 11 can be moved into position and fitted to the terminal protection mount 3.

Specifically, the busbar 1 is composed of a first part 11, a second part 12 and a third part 13, the first part 11, the second part 12 and the third part 13 are vertically arranged and sequentially connected, the structure is simple, the metal sheet can be realized through a simple bending process, the preparation process is simple, and batch production is facilitated.

The present application also provides a battery pack, such as the battery packs of fig. 1, 2, 5 and 6, comprising a plurality of cells 6 and a battery pack lead-out end assembly as in any of the above; the battery pack lead-out terminal assembly is connected to the terminal post of an end cell of the plurality of cells 6.

Specifically, in the battery pack provided by the application, the battery pack can be a battery module 9 or a battery row, the leading-out end component of the battery pack can be connected with the conductive bar 7 and the terminal on the side face of the end battery at the same time, and the battery pack is suitable for the battery pack with the terminal arranged on the side face of the battery, and the leading-out end component can be tightly attached to the conductive bar 7 and the terminal of the battery, so that the overcurrent effect is good, and further, the input efficiency and the output efficiency of the battery pack are higher; in addition, the bus bar of the leading-out terminal assembly is simple in shape, simple in forming process and convenient for batch production, and is beneficial to improving the production efficiency of the battery pack.

In some embodiments, as shown in fig. 2, 3, 4, 5 and 6, the battery pack further comprises a protective support 3, the protective support 3 is provided with a receiving groove, the adaptor 2 of the battery pack lead-out end assembly is received in the receiving groove, and the protective support 3 is disposed at one end of the end frame 4 of the battery pack in the extending direction thereof.

Specifically, the protective support 3 is connected with the end frame 4, the accommodating groove of the protective support 3 is arranged away from the end frame 4 in the extending direction of the end frame 4, the end frame 4 can be an end plate of the battery module 9 or a boundary beam of a battery pack box body, and the extending direction of the end frame 4 is consistent with the extending direction of the large surface of the battery; the protective support 3 is arranged at one end along the extending direction of the end frame 4, the opening of the accommodating groove is arranged in the direction deviating from the end frame 4, and the accommodating groove can limit the leading-out terminal assembly so as to connect the leading-out terminal assembly with the conductive bar 7; the leading-out end assembly can move along the extension direction of the end frame 4 so as to insert the adaptor 2 into the accommodating groove and simultaneously enable the bus bar 1 to be attached to the polar post 5 of the battery 6; and can adjust the distance between the utmost point post 5 of busbar 1 and battery 6 through adjusting the degree of depth of drawing forth the end subassembly and inserting in the holding tank, make and paste tightly between the utmost point post 5 of busbar 1 and battery 6, increase the area of contact between the utmost point post 5 of busbar 1 and battery 6, guarantee the welding effect and the ability of overflowing of junction.

In some embodiments, as shown in fig. 1, 2 and 3, the inner side wall of the receiving groove is provided with a protrusion, the adaptor 2 is provided with a limiting groove 24, and the limiting groove 24 is connected with the protrusion in a clamping manner.

Specifically, in the direction of piling up of group battery, the lateral wall of holding tank can carry on spacingly to the terminal subassembly of drawing forth of group battery. The inner side wall of the accommodating groove is provided with a bulge, and correspondingly, the adaptor 2 of the leading-out end assembly is provided with a limit groove 24 clamped with the bulge; through protruding joint cooperation with spacing recess 24, can realize drawing forth the block between end subassembly and the protection support 3 to can further carry on spacingly to drawing forth the end on the extension direction along the holding tank inside wall, thereby make to draw forth the connection between end and the protection support 3 more reliable and more stable.

In some embodiments, as shown in fig. 1, 3 and 4, the limiting groove 24 is a strip-shaped through groove having the same extending direction as the end frame 4 and two open ends; the protrusion and the limiting groove 24 can move mutually along the extending direction of the limiting groove 24. Preferably, the protrusion is a strip-shaped protrusion, the extending direction of the protrusion is the same as the extending direction of the limiting groove 24, the protrusion and the limiting groove can relatively move along the extending direction, and the extending direction of the limiting groove 24 can refer to the direction marked by the arrow in fig. 3.

Specifically, the limiting groove 24 may be a strip-shaped through groove in the same extending direction as the end frame 4, and the through groove indicates that two ends of the strip-shaped groove are open; when the accommodating groove is matched with the adaptor 2, the limiting groove 24 can limit the extension direction of the adaptor 2, which is vertical to the end frame 4; while along the extension direction of the end frame 4, i.e. along the extension direction of the spacing groove 24, the projection and the spacing groove 24 can be moved relative to each other to enable the plugging between the protective bracket 3 and the lead-out end assembly of the battery pack along the extension direction of the end frame 4. Thus, the terminal assembly is restricted from moving only in the extending direction of the end frame 4 by the receiving groove, the protrusion and the limiting groove 24.

The leading-out terminal assembly of the battery pack is used for being connected with the pole 5 of the end battery 6 in the battery pack, and particularly, the pole 5 of the end battery 6 can be arranged on the side surface of the battery 6, for example, particularly on the large surface of the battery. The leading-out terminal assembly of the battery pack is inserted into the accommodating groove along the extending direction of the end frame 4, so that the leading-out terminal assembly of the battery pack is contacted with the pole 5 on the side surface of the battery 6; and can adjust the distance between the end of drawing forth of group battery and the utmost point post 5 of battery 6 through the degree of depth that inserts in the holding tank of the end of drawing forth of adjusting the group battery, make to draw forth between end and the utmost point post 5 of battery 6 and paste tightly, guarantee to draw forth welding yield and the current capacity between end and the utmost point post 5 of battery 6.

The application also provides a battery pack, and the battery pack comprises the battery pack, and the input efficiency and the output efficiency of the battery pack are higher, so that the quality of the battery pack is better.

As shown in fig. 6, the battery pack may be a battery module 9 or a battery row, and is specifically disposed in a case 10 of a battery pack. In the battery pack, two adjacent battery packs can be connected through the conductive bar 7.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims. It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery pack terminal assembly comprising a busbar and an adapter, the adapter comprising a top surface facing a top side of a battery pack and a side surface perpendicular to the top surface; the top surface of the adapter is used for being connected with a conductive bar, and the conductive bar is used for being electrically connected with the outside of the battery pack; the busbar is perpendicular with the top surface of adaptor, includes first portion and second part, the first portion with the side of adaptor links to each other, the second part is used for linking to each other with the utmost point post of tip battery.

2. The battery pack terminal assembly of claim 1, wherein the adapter member defines a first engagement structure and the first portion of the busbar defines a second engagement structure, the first engagement structure engaging the second engagement structure.

3. The battery pack outlet end assembly of claim 1, wherein the adapter member is cylindrical, a threaded hole is formed in one side of a top surface of the adapter member, and the conductive strip is fixedly connected to the adapter member by a connector inserted into the threaded hole.

4. The battery pack lead-out end assembly of claim 1, wherein the top surface of the interposer is higher than the first portion of the bus bar in a direction perpendicular to the top surface of the interposer.

5. The battery pack lead-out end assembly of claim 1, wherein the first portion is parallel to the second portion, the second portion being adapted to be connected to a battery post disposed on a large face of the battery.

6. The battery pack lead-out end assembly of any of claims 1-5, wherein the buss bar further comprises a third portion connected between and perpendicular to the first portion and the second portion.

7. A battery pack comprising a plurality of cells and the battery pack terminal assembly of any of claims 1-6; a battery pack terminal assembly is connected to a terminal post of an end cell of the plurality of cells.

8. The battery pack of claim 7, further comprising a protective bracket having a receiving slot in which an adapter of the battery pack outlet end assembly is received, the protective bracket being disposed at one end of an end frame of the battery pack in a direction of extension thereof.

9. The battery pack according to claim 8, wherein the inner side wall of the receiving groove is provided with a protrusion, and the adaptor is provided with a limiting groove, and the limiting groove is in snap-fit connection with the protrusion.

10. The battery pack according to claim 9, wherein the limiting recess is a bar-shaped through groove having the same extending direction as the end frame and having both open ends.