Output assembly and battery pack

Abstract

The utility model discloses an output assembly which comprises a busbar, the busbar comprises a connecting part and an output part which are connected with each other, an included angle is formed between the connecting part and the output part, the connecting part is used for being electrically connected with a battery cell on a first surface of a battery module, and the output part is used for extending to a second surface of the battery module. According to the utility model, the problems of mistaken electric shock and high short-circuit risk during installation caused by the fact that the busbar is completely exposed on the front surface of the battery module are solved, and the safety and the reliability during the installation of the battery module are improved. The utility model further provides a battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an output component and a battery pack. Background Art

[0002] The existing busbar output pole design generally adopts L-shaped aluminum bars, which are directly transferred from one side of the side of the battery module to the main pole insulation seat on the end plate on the front side. The side of the battery module will be encapsulated, and the positive and negative high-voltage poles between the battery modules can only be connected through the busbar. The installation is troublesome and affects the appearance. Moreover, the overall exposed busbar increases the risk of accidental electric shock and short circuit during installation. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide an output assembly and a battery pack to solve the problem that the bus is completely exposed on the front of the battery module, resulting in a high risk of accidental electric shock and short circuit during installation, thereby improving the safety and reliability of the battery module during installation.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An output component includes a busbar, which includes a connecting portion and an output portion connected to each other, with an angle formed between the connecting portion and the output portion. The connecting portion is used to electrically connect to the battery cell on the first surface of the battery module, and the output portion is used to extend to the second surface of the battery module.

[0006] In one embodiment, the surface area of ​​the output portion is 1%-30% of the surface area of ​​the busbar.

[0007] In one embodiment, the output component further includes a terminal socket, the terminal socket is electrically connected to the output portion, and the terminal socket is disposed on the second surface of the battery module.

[0008] In one embodiment, an insulating layer is provided outside the output portion.

[0009] The present utility model also provides a battery pack, comprising a plurality of battery modules and two output assemblies as described above, wherein the battery modules have a first direction, a second direction and a third direction perpendicular to each other, and the plurality of battery modules are stacked along the third direction; the battery module comprises a first surface perpendicular to the first direction and a second surface perpendicular to the second direction, the first surface of each battery module is provided with a connecting piece electrically connected to the battery module, and the battery modules are electrically connected through the corresponding connecting pieces, the two output assemblies are arranged one by one on two of the battery modules, and the connecting portion of the output assembly is electrically connected to the connecting piece of the corresponding battery module, and the output portion of the output assembly is bent and extended to the second surface of the battery module.

[0010] In one embodiment, one end of the connecting piece is bent outward to form a bent portion, the connecting portion of the output assembly is electrically connected to the bent portion of the connecting piece of the corresponding battery module, and each battery module is electrically connected through the bent portion of the corresponding connecting piece.

[0011] In one embodiment, a fixing bracket is provided on the first surface of the battery module, the connecting piece is fixedly connected to the fixing bracket, and the fixing bracket has an edge protrusion, and the edge protrusion is located inside the bent portion.

[0012] In one embodiment, the battery module includes at least one battery cell, the battery cell includes a battery cell pole, and a first positioning hole is provided on the connecting piece. The connecting piece is positioned and connected to the battery cell pole through the first positioning hole to achieve electrical connection with the battery module.

[0013] In one embodiment, the battery module includes a sampling piece, the connecting piece is provided with a second positioning hole, and the sampling piece is positioned and installed in the second positioning hole.

[0014] In one embodiment, the battery module includes a plurality of battery cells and a plurality of bus bars, each of the battery cells is arranged along the second direction, a plurality of bus bars are arranged on the first surface of the battery module and are connected to the plurality of battery cells one by one, and the plurality of bus bars are connected in sequence; the connecting piece is arranged on the outer side of the bus bar along the second direction.

[0015] In one embodiment, the battery pack further includes at least one connecting member, and at least one connecting piece on one battery module is connected to a connecting piece on another battery module through the connecting member.

[0016] In one embodiment, the opposite electrodes of two adjacent battery modules are arranged on the same side, and two connecting pieces are provided at intervals on the first surface of each battery module. There are connecting pieces, N is the number of battery modules, and the two output components are respectively arranged on the two outermost battery modules along the third direction. Among the other connecting pieces that are not connected to the output components, the two adjacent battery modules are connected to the two adjacent connecting pieces through one connecting piece.

[0017] In one embodiment, the same electrodes of two adjacent battery modules are arranged on the same side, and two connecting pieces are provided at intervals on the first surface of each battery module. There are two connecting members, one connecting member connects the connecting pieces on one side of each battery module, and the other connecting member connects the connecting pieces on the other side of each battery module; any one of the connecting pieces on one side of each battery module is connected to one output component, and any one of the connecting pieces on the other side of each battery module is connected to another output component.

[0018] The beneficial effects of the present invention are that the bus includes a connecting portion and an output portion that are interconnected, the connecting portion is electrically connected to the battery cell on the first side of the battery module, and the output portion is bent and extended to the second side of the battery module for connection to external electrical equipment. Compared with the original bus that is entirely arranged on the second side of the battery module, the present invention bends the bus so that the bus is partially arranged on the first side of the battery module and partially arranged on the second side of the battery module. When the first side of the battery module is encapsulated, only part of the bus is exposed to the second side of the battery module, which effectively reduces the risk of accidental electric shock and short circuit during installation of the battery module and improves the safety and reliability of the battery module during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural diagram of an output component of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the connection structure of the battery module, output assembly, and connector in an embodiment of the present utility model;

[0022] Figure 3a yes Figure 2 A local enlarged schematic diagram of the M in the middle;

[0023] Figure 3b yes Figure 2 A partial enlarged schematic diagram of the M position in the middle where the output component is not installed;

[0024] Figure 4 yes Figure 2 A schematic diagram of the structure of the connecting piece in FIG.

[0025] Figure 5 yes Figure 2 Schematic diagram of the position structure of the fixing bracket and other components;

[0026] Figure 6 yes Figure 5 A local enlarged schematic diagram of position N in the middle;

[0027] Figure 7 1 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;

[0028] Figure 8a This is a schematic diagram of the electrical connections of four battery modules;

[0029] Figure 8b is another electrical connection diagram of four battery modules;

[0030] Figure 9a This is a schematic diagram of the electrical connection of two battery modules;

[0031] Figure 9b This is another electrical connection diagram of two battery modules.

[0032] In the figure: 1. Output component; 11. Bus; 111. Connecting part; 1111. Through hole; 112. Output part; 12. Terminal socket; 2. Battery module; 2A. First side; 2B. Second side; 21. Connecting piece; 211. Bending part; 212. First positioning hole; 213. Second positioning hole; 214. Hot rivet hole; 215. Rivet bolt; 22. Fixing bracket; 221. Hot rivet point; 222. Edge protrusion; 23. Sampling piece; 24. Battery cell; 25. Busbar; 26. Sampling harness; 27. Liquid cooling plate; 271. Liquid cooling interface; 28. End plate; 3. Connector; 4. Nut. DETAILED DESCRIPTION

[0033] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0034] In the description of this utility model, unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0035] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.

[0036] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.

[0037] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0038] The term "and / or" means "and" or "or", that is, either one of the two elements can be selected, or both of the two elements can be selected.

[0039] The utility model provides an output component 1, such as Figure 1 and Figure 2As shown, the bus 11 includes a connecting portion 111 and an output portion 112 that are interconnected. There is an angle between the connecting portion 111 and the output portion 112. The connecting portion 111 is used to electrically connect to the battery cell 24 on the first side 2A of the battery module 2, and the output portion 112 is used to extend to the second side 2B of the battery module 2. In this embodiment, the bus 11 includes a connecting portion 111 and an output portion 112 that are interconnected. The connecting portion 111 is electrically connected to the battery cell 24 on the first side 2A of the battery module 2, and the output portion 112 is bent and extended to the second side 2B of the battery module 2 for connection to external electrical equipment. Compared with the original bus 11 that is entirely arranged on the second side 2B (front side) of the battery module 2, this embodiment arranges part of the bus 11 on the first side 2A of the battery module 2 and part of it on the second side 2B of the battery module 2. After the first side 2A of the battery module 2 is encapsulated, only part of the bus 11 is exposed to the second side 2B of the battery module 2, which effectively reduces the risk of accidental electric shock and short circuit during installation of the battery module 2 and improves the safety and reliability of the battery module 2 during installation. Among them, in the preferred case, the battery module 2 is a rectangular structure, and the connecting portion 111 and the output portion 112 of the bus 11 are respectively attached to the first surface 2A and the second surface 2B of the battery module 2, and the angle between the connecting portion 111 and the output portion 112 is 90°; here, for further explanation, the first surface 2A can be set as a side surface of the battery module 2, and the second surface 2B is the front surface of the battery module 2.

[0040] As an embodiment, the surface area of ​​the output portion 112 is 1%-30% of the surface area of ​​the bus 11 , which effectively reduces the risk of accidental electric shock and short circuit during installation compared to the original bus 11 with a surface area exposure ratio of 100%.

[0041] As an implementation method, Figures 1 to 3a As shown, the output assembly 1 also includes a terminal socket 12, which is electrically connected to the output portion 112. The terminal socket 12 is disposed on the second side 2B of the battery module 2 and is used to electrically connect to external electrical equipment. Specifically, the terminal socket 12 employs an insulated design to further reduce the risk of accidental electric shock and short circuits during installation. The terminal socket 12 is threadedly connected to the second side 2B of the battery module 2.

[0042] As an embodiment, the output portion 112 is provided with an insulating layer (not shown), such as an insulating coating or an insulating sleeve, which can further reduce the risk of accidental electric shock and short circuit during installation.

[0043] The utility model also provides a battery pack, such as Figures 2 to 7As shown, it includes multiple battery modules 2 and two output components 1 as described above, the battery modules 2 have a first direction X, a second direction Y and a third direction Z that are perpendicular to each other, and the multiple battery modules 2 are stacked along the third direction Z; the battery module 2 includes a first surface 2A perpendicular to the first direction X and a second surface 2B perpendicular to the second direction Y, and the first surface 2A of each battery module 2 is provided with a connecting piece 21 electrically connected to the battery module 2, and each battery module 2 is electrically connected through the corresponding connecting piece 21, and the two output components 1 are arranged on two of the battery modules 2 in a one-to-one correspondence, and the connecting part 111 of the output component 1 is electrically connected to the connecting piece 21 of the corresponding battery module 2, and the output part 112 of the output component 1 is bent and extended to the second surface 2B of the battery module 2.

[0044] In this embodiment, a connecting piece 21 electrically connected to the battery module 2 is provided on the first surface 2A of the battery module 2. When multiple battery modules 2 are connected in series or in parallel, each battery module 2 is electrically connected through the corresponding connecting piece 21 to realize the connection of multiple battery modules 2; and the connecting portion 111 of the output component 1 is electrically connected to the connecting piece 21 of the corresponding battery module 2, and the output portion 112 of the output component 1 is bent and extended to the second surface 2B of the battery module 2 for electrical connection with external electrical equipment, changing the original L-shaped aluminum bar (connecting piece) bent to the battery module 2 has a structure in which the second side 2B of the battery module 2 is connected to the bus 11, which solves the problem that the connection of each battery module 2 and the electrical connection with the external electrical equipment are both through the bus 11 on the second side 2B, resulting in a large exposed area of ​​the bus 11. This embodiment realizes the connection of each battery module 2 on the first side 2A of the battery module 2 and the electrical connection with the external electrical equipment on the second side 2B of the battery module 2. When the first side 2A of the battery module 2 is encapsulated, the exposed area of ​​the bus 11 on the second side 2B of the battery module 2 is effectively reduced, thereby reducing the risk of accidental electric shock and short circuit during installation.

[0045] The connecting piece 21 is an aluminum output pole, made entirely of 1060H24 aluminum, which offers high strength and excellent conductivity. Specifically, the interconnection between the connecting pieces 21 enables connection between the battery modules 2 on the first side 2A, increasing the front-to-back space for the battery cells 24 arranged in the second direction Y. The rear of the battery module 2 (opposite the second side 2B, or front side, of the battery module 2) is not provided with a terminal socket 12, which allows for the arrangement of the battery cells 24 to a certain extent, increasing the capacity of a single module. The connecting piece 21, in conjunction with the design of the busbar 11, uses the terminal socket 12, making the positive and negative pole connections between the battery modules 2 more convenient and safer to install.

[0046] As an implementation method, Figures 2 to 7As shown, one end of the connecting piece 21 is bent outward to form a bent portion 211. The connecting portion 111 of the output assembly 1 is electrically connected to the bent portion 211 of the connecting piece 21 of the corresponding battery module 2. The battery modules 2 are electrically connected via the bent portion 211 of the corresponding connecting piece 21. The fixing bracket 22 has an edge protrusion 222 formed at its edge. The edge protrusion 222 is located on the inner side of the bent portion 211, so that the bent portion 211 can avoid possible interference between the busbar 11 and the fixing bracket 22. Specifically, a rivet bolt 215 is provided on the bent portion 211. Accordingly, the connecting portion 111 of the busbar 11 has a through hole 1111. The rivet bolt 215 passes through the through hole 1111 and cooperates with the nut 4 to fasten the connecting piece 21 to the busbar 11. Compared with the welding method used in the prior art, it is convenient for installation and later maintenance. Alternatively, a through hole is provided on the connecting member 3. The rivet bolt 215 passes through the through hole and cooperates with the nut 4 to fasten the connecting piece 21 to the connecting member 3. Electrical connection between multiple battery modules 2 is achieved through the connecting member 3. Among them, the fixing bracket 22 can be a blister bracket.

[0047] As an implementation method, Figures 2 to 6 As shown, the first side 2A of the battery module 2 is provided with a fixing bracket 22, and the connecting piece 21 is fixedly connected to the fixing bracket 22. The fixing bracket 22 has an edge protrusion 222, and the edge protrusion 222 is located inside the bent portion 211. Specifically, the connecting piece 21 is provided with a hot rivet hole 214, and the fixing bracket 22 is provided with a hot rivet point 221. The connecting piece 21 is mounted on the fixing bracket 22 by hot riveting, achieving hot riveting fixation of the connecting piece 21 and the fixing bracket 22.

[0048] As an implementation method, Figures 2 to 4 As shown, the battery module 2 includes at least one battery cell 24, which includes a battery cell pole (not shown). A first positioning hole 212 is provided on the connecting piece 21. The connecting piece 21 is positioned and connected to the battery cell pole through the first positioning hole 212 to achieve electrical connection with the battery module 2. The connecting piece 21 and the battery cell pole are positioned and welded in the first positioning hole 212. The connecting piece 21 and the battery cell pole are welded by laser welding to achieve electrical connection between the connecting piece 21 and the battery module 2.

[0049] As an implementation method, Figures 2 to 6As shown, the battery module 2 includes a sampling piece 23. A second positioning hole 213 is provided on the connecting piece 21. The sampling piece 23 is positioned and installed in the second positioning hole 213. The second positioning hole 213 enables the sampling piece 23 to be accurately positioned and pre-installed. The sampling piece 23 is connected to each acquisition module (not shown) via a sampling harness 26. Each acquisition module is connected to each battery cell 24 in a one-to-one correspondence. Each acquisition module is in communication with a control board (not shown) to collect operating data of each battery cell 24, such as operating temperature. The sampling piece 23 can be a nickel piece.

[0050] As an implementation method, Figure 2 And Figure 3, Figure 5 and Figure 6 As shown, the battery module 2 includes multiple battery cells 24 and multiple busbars 25. The battery cells 24 are arranged along the second direction Y. The multiple busbars 25 are provided on the first side 2A of the battery module 2 and are connected to the multiple battery cells 24 in a one-to-one correspondence. The multiple busbars 25 are connected in sequence, thereby connecting the battery cells 24 in series. The connecting piece 21 is provided at the outer end of the busbar 25 along the second direction Y. Specifically, when the battery module 2 is provided with two connecting pieces 21, the two connecting pieces 21 are respectively provided on both sides of the busbar 25 along the second direction Y.

[0051] As an implementation method, Figure 2 As shown, end plates 28 are installed on the second side 2B (front side) and the back side (the side opposite to the second side 2B) of the battery module 2 perpendicular to the second direction Y, and liquid cooling plates 27 are provided on the upper and lower sides of the battery module 2 along the third direction Z. A liquid cooling interface 271 is provided at the edge of the liquid cooling plate 27, and a cooling medium, such as water, is introduced into the liquid cooling plate 27 through the liquid cooling interface 271 to cool the battery module 2 so that the battery module 2 can be maintained within the normal temperature operating range to avoid thermal runaway.

[0052] As an implementation method, Figures 1 to 9b As shown, the battery pack further includes at least one connector 3 , and at least one connector 21 on one battery module 2 is connected to a connector 21 on another battery module 2 via the connector 3 to achieve electrical connection between the battery modules 2 .

[0053] As an embodiment, there are two connecting pieces 21, and the two connecting pieces 21 are spaced apart and arranged on the first surface 2A of the battery module 2. Specifically, by providing two connecting pieces 21 on one battery module 2, the positive and negative poles of one battery module 2 are connected to another battery module 2. That is, through the two connecting pieces 21, a parallel connection is achieved in which the positive poles of the two battery modules 2 are connected to the positive poles and the negative poles are connected to the negative poles, or a series connection is achieved in which the positive poles and negative poles of the two battery modules 2 are connected in sequence. The two connecting pieces 21 are connected by a connector 3. Of course, one connecting piece 21 can also be provided on one battery module 2. The positive and negative poles of the battery modules 2 can be connected to each other by connecting the connecting pieces 21 to each other and the busbars 25 on adjacent battery modules 2 to each other.

[0054] As an implementation method, Figure 8a and Figure 9a As shown, the opposite electrodes of two adjacent battery modules 2 are arranged on the same side, that is, the positive electrode of one battery module 2 is adjacent to the negative electrode of the adjacent battery module, and two connecting pieces 21 are provided at intervals on the first side 2A of each battery module 2. There are (N-1) connecting pieces 3, where N is the number of battery modules 2. Two output components 1 are respectively arranged on the two outermost battery modules 2 along the third direction Z, that is, one battery module 2 is arranged on the top surface, and the other is arranged on the bottom surface. One output component 1 serves as an electrical input electrode, and the other serves as an electrical output electrode. Among the other connecting pieces 21 not connected to the output components 1, two adjacent battery modules 2 are connected to the two adjacent connecting pieces 21 through a connecting piece 3, so that the positive and negative electrodes between the battery modules 2 are connected in sequence to realize the series connection between the battery modules 2.

[0055] As an implementation method, Figure 8b and Figure 9b As shown, the same electrodes of two adjacent battery modules 2 are arranged on the same side, that is, the positive electrode of each battery module is arranged on one side (positive electrode side), and the negative electrode is arranged on the other side (negative electrode side). Two connecting pieces 21 are provided at intervals on the first surface 2A of each battery module 2. There are two connecting members 3, one connecting member 3 connects each connecting piece 21 on one side (positive electrode side) of each battery module 2, and the other connecting member 3 connects each connecting piece 21 on the other side (negative electrode side) of each battery module 2, that is, one connecting member 3 connects the positive electrode of each battery module 2, and one connecting member 3 connects the negative electrode of each battery module. Any connecting piece 21 on one side (positive electrode side) of each battery module 2 is connected to an output component 1, and any connecting piece 21 on the other side (negative electrode side) of each battery module 2 is connected to another output component 1. One output component 1 serves as an electrical input electrode, and the other serves as an electrical output electrode, so as to realize parallel connection between the battery modules 2.

[0056] In one embodiment, if Figure 8a and Figure 8bAs shown, when four battery modules 2 are stacked along the third direction Z, each battery module 2 is provided with two connecting pieces 21, and the number of connecting pieces 3 is two or three. Specifically:

[0057] like Figure 8a As shown, there are three connectors 3, and the opposite electrodes of adjacent battery modules 2 in the four battery modules 2 are arranged on the same side. The two battery modules 2 on the top and bottom surfaces along the third direction Y are respectively connected to an output component 1 as an electrical input electrode and an electrical output electrode. Two adjacent battery modules 2 are connected to the corresponding two connecting pieces 21 through a connector 3, and the four battery modules 2 are connected in series through three connectors 3; that is, the number N of battery modules 2 is 4, and the number of connectors 3 is 4-1=3.

[0058] like Figure 8b As shown, there are two connectors 3, which are arranged on the same side of the same electrode of the four battery modules 2. One connector 3 is connected to the four connecting pieces 21 on one side (the positive electrode side), and the other connector 3 is connected to the four connecting pieces 21 on the other side (the negative electrode side). One of the four connecting pieces 21 on the positive electrode side is connected to an output component 1, and one of the four connecting pieces 21 on the negative electrode side is connected to an output component 1, thereby realizing the parallel connection of the four battery modules 2.

[0059] In another embodiment, if Figure 9a and Figure 9b As shown, when two battery modules 2 are stacked along the third direction Z, each battery module 2 is provided with two connecting pieces 21, and the number of connecting pieces 3 is one or two. Specifically:

[0060] like Figure 9a As shown, there is one connector 3, and the opposite electrodes of the two battery modules 2 are arranged on the same side. One connector 3 connects the two connecting pieces 21 on one side, and the two connecting pieces 21 on the other side are each connected to an output component 1, serving as an electrical input electrode and an electrical output electrode, thereby realizing a series connection of the two battery modules 2; that is, the number N of the battery modules 2 is 2, and the number of connectors 3 is N-1=1.

[0061] like Figure 9b As shown, there are two connectors 3, which are arranged on the same side of the same electrode of the two battery modules 2. One connector 3 connects the two connecting pieces 21 on one side (the positive electrode side), and the other connector 3 connects the two connecting pieces 21 on the other side (the negative electrode side). One of the two connecting pieces 21 on the positive electrode side is connected to an output component 1, and one of the two connecting pieces 21 on the negative electrode side is connected to an output component 1, thereby realizing the parallel connection of the two battery modules 2.

[0062] When the number of battery modules 2 is three, five, or other numbers, they are not described here one by one.

[0063] The utility model bends the busbar 11 so that part of the busbar 11 is arranged on the first side 2A (side) of the battery module 2 and part of it is arranged on the second side 2B (front) of the battery module 2. When the side of the battery module 2 is encapsulated, only part of the busbar 11 is exposed on the front of the battery module 2, which effectively reduces the risk of accidental electric shock and short circuit during installation of the battery module 2 and improves the safety and reliability of the battery module 2 during installation.

[0064] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to the technical content disclosed above without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. An output component, characterized in that: The busbar (11) comprises a connecting portion (111) and an output portion (112) connected to each other, wherein the connecting portion (111) and the output portion (112) form an angle, the connecting portion (111) is used to electrically connect to a battery cell (24) on a first surface (2A) of a battery module (2), and the output portion (112) is used to extend to a second surface (2B) of the battery module (2).

2. The output assembly according to claim 1, wherein: The surface area of ​​the output portion (112) is 1%-30% of the surface area of ​​the busbar (11).

3. The output assembly according to claim 1, wherein: The output component (1) further comprises a terminal socket (12), the terminal socket (12) being electrically connected to the output portion (112), and the terminal socket (12) being arranged on the second surface (2B) of the battery module (2).

4. The output assembly according to claim 1, wherein: An insulating layer is provided outside the output portion (112).

5. A battery pack, characterized in that: The invention comprises a plurality of battery modules (2) and two output assemblies (1) according to any one of claims 1 to 4, wherein the battery modules (2) have a first direction (X), a second direction (Y) and a third direction (Z) perpendicular to each other, and the plurality of battery modules (2) are stacked along the third direction (Z); the battery module (2) comprises a first surface (2A) perpendicular to the first direction (X) and a second surface (2B) perpendicular to the second direction (Y), and each of the battery modules (2) is provided with a first surface (2A) perpendicular to the first direction (X) and a second surface (2B) perpendicular to the second direction (Y). The battery modules (2) are electrically connected to the connecting pieces (21), and each of the battery modules (2) is electrically connected via the corresponding connecting pieces (21). Two output components (1) are arranged on two of the battery modules (2) in a one-to-one correspondence, and the connecting portion (111) of the output component (1) is electrically connected to the connecting piece (21) of the corresponding battery module (2). The output portion (112) of the output component (1) is bent and extended to the second surface (2B) of the battery module (2).

6. The battery pack according to claim 5, wherein: One end of the connecting piece (21) is bent outward to form a bent portion (211), the connecting portion (111) of the output assembly (1) is electrically connected to the bent portion (211) of the connecting piece (21) of the corresponding battery module (2), and the battery modules (2) are electrically connected via the bent portion (211) of the corresponding connecting piece (21).

7. The battery pack according to claim 6, wherein: The first surface (2A) of the battery module (2) is provided with a fixing bracket (22), the connecting piece (21) is fixedly connected to the fixing bracket (22), and the fixing bracket (22) has an edge protrusion (222), and the edge protrusion (222) is located inside the bent portion (211).

8. The battery pack according to claim 5, wherein: The battery module (2) includes at least one battery cell (24), the battery cell (24) includes a battery cell pole, the connecting piece (21) is provided with a first positioning hole (212), and the connecting piece (21) is positioned and connected to the battery cell pole through the first positioning hole (212) to achieve electrical connection with the battery module (2).

9. The battery pack according to claim 5, wherein: The battery module (2) includes a sampling piece (23); a second positioning hole (213) is provided on the connecting piece (21); and the sampling piece (23) is positioned and installed in the second positioning hole (213).

10. The battery pack according to claim 5, wherein: The battery module (2) comprises a plurality of battery cells (24) and a plurality of busbars (25), each of the battery cells (24) being arranged along the second direction (Y), a plurality of busbars (25) being arranged on the first surface (2A) of the battery module (2) and being connected to the plurality of battery cells (24) in a one-to-one correspondence, and the plurality of busbars (25) being connected in sequence; and the connecting piece (21) being arranged on the outer side of the busbar (25) along the second direction (Y).

11. The battery pack according to any one of claims 5 to 10, wherein: The battery pack further comprises at least one connecting member (3), and at least one connecting piece (21) on one battery module (2) is connected to a connecting piece (21) on another battery module (2) via the connecting member (3).

12. The battery pack according to claim 11, wherein: The opposite electrodes of two adjacent battery modules (2) are arranged on the same side, and the first surface (2A) of each battery module (2) is provided with two connecting pieces (21) at intervals. The number of connecting pieces (3) is (N-1), where N is the number of the battery modules (2). The two output components (1) are respectively arranged on the two outermost battery modules (2) along the third direction (Z). Among the other connecting pieces (21) not connected to the output components (1), the two adjacent battery modules (2) are connected to the two adjacent connecting pieces (21) via one connecting piece (3).

13. The battery pack according to claim 11, wherein: The same electrodes of two adjacent battery modules (2) are arranged on the same side, and the first surface (2A) of each battery module (2) is provided with two connecting pieces (21) at intervals. There are two connecting members (3), one connecting member (3) is connected to each connecting piece (21) on one side of each battery module (2), and the other connecting member (3) is connected to each connecting piece (21) on the other side of each battery module (2); any one connecting piece (21) on one side of each battery module (2) is connected to one output component (1), and any one connecting piece (21) on the other side of each battery module (2) is connected to another output component (1).

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