Integrated busbar assembly, battery and electric equipment

Abstract

The utility model discloses an integrated busbar assembly. The integrated busbar assembly comprises a flexible circuit board, a plurality of metal bars and an injection molding support. The plurality of metal bars are electrically connected with the flexible circuit board. The injection molding support wraps the flexible circuit board and the plurality of metal bars, at least one side of the injection molding support is provided with a plurality of avoiding openings, the power connection parts of the metal bars are exposed from the corresponding avoiding openings, and the power connection parts are used for being electrically connected with battery cells. According to the integrated busbar assembly, the flexible circuit board and the plurality of metal bars are wrapped by the injection molding bracket, so that the integrated busbar assembly is integrally arranged, the assembly error is reduced, the injection molding bracket can protect electronic elements such as the flexible circuit board from being influenced and interfered by external factors, the anti-interference capability and the operation stability of the integrated busbar assembly are improved, and the service life of the integrated busbar assembly is prolonged. Meanwhile, the overall strength of the integrated busbar assembly is further improved through the injection molding support, so that the damage resistance of the integrated busbar assembly is higher, and the integrated busbar assembly is not prone to being broken.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to an integrated busbar assembly, a battery and an electrical device. Background Art

[0002] The integrated busbar (Cells Contact System, CCS) is installed on the battery module to collect the voltage signal, current signal, temperature signal, etc. of the battery module. The traditional integrated busbar is connected to the battery cell, and its structure mainly includes a bracket, an aluminum busbar and a collection line.

[0003] At present, conventional CCS usually uses a bracket made of blister as a carrier of flexible circuit boards and aluminum bars. However, the blister bracket and the flexible circuit board, or the blister bracket and the aluminum bar need to be positioned and fixed by hot melt columns. Therefore, during the assembly process, due to the tolerance generated in the production process, it is possible to cause deviations in the actual assembly. In addition, since the blister bracket only plays a supporting and positioning role, the various electronic components are not protected as a whole and are easily disturbed by the outside world, affecting the overall smooth operation. Secondly, the blister bracket and the flexible circuit board do not have strength. Therefore, during the turnover, use, and subsequent assembly production of the finished product, it is easy to cause cracks and damage, thereby increasing the defective rate. Utility Model Content

[0004] The main purpose of the present application is to provide an integrated busbar assembly, a battery and an electrical device, aiming to solve the technical problems that the brackets of the existing integrated busbar assembly have deviations during the assembly process and cannot protect the various electronic components in the integrated busbar assembly as a whole after assembly.

[0005] To achieve the above objectives, the present application provides an integrated busbar assembly, the integrated busbar assembly comprising:

[0006] Flexible circuit boards;

[0007] A plurality of metal bars, each electrically connected to the flexible circuit board;

[0008] The injection molded bracket covers the flexible circuit board and the plurality of metal bars. A plurality of avoidance openings are provided on at least one side of the injection molded bracket. The power connection parts of the metal bars are exposed from the corresponding avoidance openings. The power connection parts are used to electrically connect the battery cells.

[0009] Furthermore, in one embodiment, the plurality of metal bars include two first metal bars and at least one second metal bar, the first metal bar includes a main body and an extension terminal, the main body and the second metal bar are both enclosed in the injection molded bracket, the power connection parts on the main body and the second metal bar are exposed from the corresponding avoidance openings, and the extension terminal extends outside the injection molded bracket.

[0010] Further, in one embodiment, the two extension terminals are respectively located on opposite sides of the injection-molded bracket; or

[0011] The two extension terminals are respectively located on two adjacent sides of the injection-molded bracket.

[0012] Furthermore, in one embodiment, a connection hole is provided on the extension terminal, and the connection hole is used to connect a fastener.

[0013] Furthermore, in one embodiment, at least one of the extension terminals is provided with a first keyway or a first convex key, and the first keyway of the extension terminal is used to connect to the first convex key of an extension terminal on another integrated busbar assembly.

[0014] Furthermore, in one embodiment, the injection molded bracket further comprises an extension portion, on which a second keyway or a second convex key is provided, and the second keyway is used to connect to a second convex key of an extension portion on another integrated busbar assembly.

[0015] Furthermore, in one embodiment, the avoidance openings are provided on opposite sides of the injection-molded bracket, and the two sides of the power connection portion are respectively exposed from the avoidance openings on the opposite sides of the injection-molded bracket.

[0016] Furthermore, in one embodiment, there are multiple flexible circuit boards, and the multiple flexible circuit boards are arranged side by side. Each of the flexible circuit boards is electrically connected to the multiple metal bars, and the flexible circuit boards are electrically connected through the metal bars. The injection molded bracket covers the multiple flexible circuit boards and the multiple metal bars.

[0017] Furthermore, in one embodiment, at least one hollow opening is provided on the injection-molded body, and the hollow opening passes through the injection-molded bracket and is arranged between two adjacent rows of the metal rows.

[0018] Furthermore, in one embodiment, the integrated busbar assembly further includes a connector, which is electrically connected to the flexible circuit board and is located outside the injection molded bracket.

[0019] The present application also provides a battery, which includes a plurality of battery cells and the integrated busbar assembly, and the plurality of battery cells are electrically connected to the corresponding power connection parts respectively.

[0020] The present application also provides an electrical device, which includes the battery.

[0021] In the technical solution provided in the present application, by first electrically connecting multiple metal bars to the flexible circuit board, and then covering the flexible circuit board and the multiple metal bars through an injection molding bracket, the integrated busbar assembly can be arranged in one piece, thereby reducing assembly errors and supporting electronic components such as the flexible circuit board. The injection molding bracket can protect electronic components such as the flexible circuit board from external factors and interference, thereby improving the anti-interference ability and operational stability of the integrated busbar assembly, and making the accuracy of information collection higher. At the same time, the injection molding bracket further improves the overall strength of the integrated busbar assembly, making the integrated busbar assembly more resistant to destructive forces and less prone to breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0023] Figure 1 This is a schematic diagram of the overall structure of the integrated busbar assembly of the first embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the exploded structure of the integrated busbar assembly of the first embodiment of the present application;

[0025] Figure 3 This is a schematic diagram of the overall structure of an integrated busbar assembly according to a second embodiment of the present application;

[0026] Figure 4 Schematic diagram of the exploded structure of the integrated busbar assembly of the third embodiment of the present application

[0027] Figure 5 This is a schematic diagram of the overall structure of an integrated busbar assembly according to a fourth embodiment of the present application;

[0028] Figure 6 for Figure 5 A partial enlarged view of the middle A;

[0029] Figure 7 for Figure 5 A partial enlarged view of point B in the middle.

[0030] Among them, 100, integrated busbar assembly; 10, flexible circuit board; 20, metal bus; 201, power connection part; 202, first metal bus; 203, main body; 204, extension terminal; 205, connection hole; 206, first keyway; 207, first convex key; 208, second metal bus; 30, injection molded bracket; 301, avoidance opening; 302, extension part; 303, second keyway; 304, second convex key; 305, hollow opening; 40, connector. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only. In the description of this application, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "include" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may be present or added.

[0032] In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. All technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0033] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0034] Please refer to Figure 1-Figure 7 , an embodiment of the present application discloses an integrated busbar assembly 100 .

[0035] In one embodiment, if Figure 1-Figure 2 As shown, the integrated busbar assembly 100 includes a flexible circuit board 10, a plurality of metal bars 20 and an injection molded bracket 30. The injection molded bracket 30 covers the flexible circuit board 10 and the plurality of metal bars 20, and at least one side of the injection molded bracket 30 is provided with a plurality of avoidance openings 301, and the power connection parts 201 of the metal bars 20 are exposed from the corresponding avoidance openings 301, and the power connection parts 201 are used to electrically connect the battery cells.

[0036] In this embodiment, each metal row 20 is first electrically connected to the flexible circuit board 10, and then the electrically connected metal row 20 and the flexible circuit board 10 are placed in a mold, and then a low-temperature and low-pressure injection molding process is used to inject the injection molding material into the mold. After the injection molding material is cooled and formed, it is demolded to obtain an injection molding bracket 30, and the injection molding bracket 30 encapsulates the flexible circuit board 10 and multiple metal rows 20 therein, and forms an avoidance opening 301 on the injection molding bracket 30 at a position corresponding to the power connection portion 201 of the metal row 20, so that the power connection portion 201 of the metal row 20 is exposed corresponding to the avoidance opening 301, so that the power connection portion 201 can be electrically connected to the battery cell. Because the injection molded bracket 30, the flexible circuit board 10 and the multiple metal bars 20 are integrally formed and do not need to be assembled, it not only avoids deviations during the assembly process, but also supports the flexible circuit board 10 and other electronic components. At the same time, the integrally formed injection molded bracket 30 encapsulates the flexible circuit board 10 and the multiple metal bars 20 therein, and the injection molded bracket 30 can protect the flexible circuit board 10 and other electronic components from the influence and interference of external factors, thereby improving the anti-interference ability and operation stability of the integrated busbar assembly 100, making the accuracy of information collection higher. At the same time, the injection molded bracket 10 further improves the overall strength of the integrated busbar assembly 100, making the integrated busbar assembly 100 more resistant to destructive forces and less prone to breakage.

[0037] It is worth noting that encapsulation means that the injection molded bracket 30 encapsulates the flexible circuit board 10 and the plurality of metal bars 20 inside the injection molded bracket 30 .

[0038] Specifically, the low-pressure injection molding process is a packaging process method that injects the packaging material into the mold with a very low injection pressure (1.5-40 bar) and quickly solidifies and forms it (5-50 seconds) to achieve the effects of insulation, temperature resistance, impact resistance, vibration reduction, moisture resistance, waterproofness, dust resistance, and chemical corrosion resistance;

[0039] In addition, the temperature range of injection molding is between 180 and 240 degrees Celsius. This method can gently encapsulate delicate and sensitive electronic components such as wiring harnesses, connectors 40, micro switches, sensors and circuit boards without damaging them.

[0040] After the injection molding material is injected into the mold, it immediately begins to cool and solidify. The solidification time varies depending on the amount of glue, and is approximately between 5 and 50 seconds. In addition to protecting components from the influence of the surrounding environment, after molding, the hardness can reach Shore A60-90 or Shore D40, and it has good toughness and can reduce the impact force from the outside world. That is, the low-pressure injection molding material also has the function of impact resistance and stress buffering. In addition, the injection molding material can also be used as an electrical insulating material.

[0041] The metal bar 20 may be a copper bar or an aluminum bar.

[0042] The flexible circuit board 10 may be a straight strip structure, with the plurality of metal bars 20 distributed on both sides of the straight strip structure; or, the flexible circuit board 10 may be a U-shaped structure, with the plurality of metal bars 20 distributed on both sides of the U-shaped structure.

[0043] The number of metal bars 20 connected to any side of the flexible circuit board 10 can be one, two, three or four. Each metal bar 20 can have one, two, three or four power connection parts 201, and the avoidance openings 301 are arranged in a one-to-one correspondence with the power connection parts 301.

[0044] Furthermore, the integrated busbar assembly 100 also includes a connector 40, which is electrically connected to the flexible circuit board 10 and is located outside the injection molded bracket 30 to achieve electrical connection between the flexible circuit board 10 and the outside. The connector 40 builds a bridge of communication between blocked parts within the circuit or isolated circuits, thereby allowing current to flow and enabling the circuit to achieve its intended function.

[0045] In one embodiment, the plurality of metal rows 20 include two first metal rows 202 and at least one second metal row 208, the first metal row 202 includes a main body 203 and an extension terminal 204, the main body 203 and the second metal row 208 are both encapsulated in the injection molded bracket 30, that is, the main body 203 and the second metal row 208 are both encapsulated inside the injection molded bracket 30, the positions of the power connection portions 201 on the main body 203 and the second metal row 208 correspond to the positions of the avoidance opening 301, so that the power connection portions 201 on the body and the second metal row 208 are exposed, so that the battery cell can be electrically connected to the power connection portions 201, and the extension terminal 204 extends to the outside of the injection molded bracket 30.

[0046] Specifically, the epitaxial terminal 204 is a bent copper sheet or aluminum sheet punched out by punching equipment. The epitaxial terminal 204 is a connector for the metal bus 20 to be electrically connected to the outside or to fix the integrated busbar assembly 100 .

[0047] In another embodiment, the metal bars 20 are all covered by the injection-molded bracket 30 except for the position of the power connection portion 201 . The injection-molded bracket 30 can protect the metal bars 20 from the influence and interference of external factors to the greatest extent.

[0048] In another embodiment, the plurality of metal bars 20 may further include 3, 4, 5 or 6 first metal bars 202, and further, 3, 4, 5 or 6 extension terminals 204 may exist in the integrated busbar assembly 100. All extension terminals 204 may be used for electrical connection or for fixation, or a part of the extension terminals 204 may be used for electrical connection and another part of the extension terminals 204 may be used for fixation.

[0049] In this embodiment, the main body 203 and the second metal bar 208 are both enclosed in the injection molded bracket 30, that is, most of the metal bar 20 is enclosed by the injection molded bracket 30, so that the injection molded bracket 30 can protect the metal bar 20 from the influence and interference of external factors. The extension terminal 204 of the metal bar 20 extends outside the injection molded bracket 30. On the one hand, the extension terminal 204 can electrically connect the integrated busbar assembly 100 to an external power supply, and on the other hand, it can improve the stability of fixing the integrated busbar assembly 100.

[0050] Optionally, the extension terminal 204 is provided with a connection hole 205, which can be penetrated by a fastener such as a screw or an anchor and connected to an external bracket or another integrated busbar assembly 100. By providing the connection hole 205 on the extension terminal 204, it is convenient to connect to an external bracket or the like. Optionally, the extension terminal 204 can also be connected to an external bracket or another integrated busbar assembly 100 by welding, keyway connection or snap connection.

[0051] like Figure 1 He Ru Figure 3 As shown, the two extension terminals 204 are respectively located on opposite sides of the injection molded bracket 30, and a connecting hole 205 is provided on the extension terminal 204. The connecting hole 205 is used to connect fasteners to facilitate the fixation of the integrated busbar assembly 100 itself and to achieve reliable electrical connection when the integrated busbar assembly 100 is used as a single one.

[0052] Further, such as Figure 3 As shown, at least one hollow opening 305 is provided on the injection molded bracket 30 , and the hollow opening 305 passes through the injection molded bracket 30 and is arranged between two adjacent rows of metal bars 20 . The hollow opening 305 is used for heat dissipation, further improving the heat dissipation efficiency of the integrated busbar assembly 100 .

[0053] In this embodiment, the number of the hollow openings 305 can be 1, 2, 3, 4, 5, 6 or 7. It should be noted that the number of the hollow openings 305 is not limited to 1, 2, 3, 4, 5, 6 or 7, and the specific number can be increased or decreased according to actual needs; the shape of the hollow opening 305 can be a rectangle with rounded corners, an ellipse, a square or a circle, etc.; Figure 3 As shown, the number of the hollow openings 305 is preferably 7, and the shape of the hollow openings 305 is a rectangle with rounded corners. A plurality of hollow openings 305 are arranged in parallel between two adjacent rows of metal rows 20 .

[0054] Optionally, the hollow opening 305 may also be a strip-shaped hole that occupies the area between two adjacent rows of metal rows 20 .

[0055] In one embodiment, if Figure 4As shown, the number of flexible circuit boards 10 can also be multiple, and the multiple flexible circuit boards 10 are arranged side by side, and then the multiple metal bars 20 are electrically connected on each flexible circuit board 10, and the flexible circuit boards 10 are electrically connected through the metal bars 20, and then the electrically connected multiple flexible circuit boards 10 and the multiple metal bars 20 are placed in a mold, and the injection molding material is injected, and the injection molding bracket 30, the multiple flexible circuit boards 10 and the multiple metal bars 20 are injection molded into a large-area integrated busbar assembly 100 through a low-temperature and low-pressure injection molding process, which can realize the connection capability of the integrated busbar assembly 100 to larger-scale battery cells.

[0056] Optionally, the number of the flexible circuit boards 10 may be 2 or 3. In this embodiment, the number of the flexible circuit boards 10 is preferably 3, and the 3 flexible circuit boards 10 are arranged in parallel. The number of the metal rows 20 is 49, wherein 2 metal rows 20 are each provided with a power connection portion 201, 47 metal rows 20 are each provided with 2 power connection portions 201, 8 metal rows 20 are arranged in parallel on one outer side of the 3 parallel flexible circuit boards 10, 8 metal rows 20 are arranged in parallel on the other outer side of the 3 parallel flexible circuit boards 10, 16 metal rows 20 are divided into two rows and arranged in parallel, and one metal row 20 is arranged horizontally on one side of the two rows of metal rows 20 arranged in parallel to form a group of metal rows 20, and the group of metal rows 20 It is arranged between two adjacent flexible circuit boards 10, wherein two metal bars 20 are provided with extension terminals 204, 16 metal bars 20 are arranged in parallel to form another group of metal bars 20, and this group of metal bars 20 is arranged between another two adjacent flexible circuit boards 10, the injection molding bracket 30 wraps 3 flexible circuit boards 10 and 49 metal bars 20, and the 49 metal bars 20 have 96 power connection parts 201, and the injection molding bracket 30 opens a avoidance opening 301 corresponding to the position of each power connection part 201, thereby greatly increasing the number of cells that can be connected to the integrated busbar assembly 100, and the two extension terminals 204 arranged in parallel extend outside the injection molding bracket 30, so as to realize the electrical connection between the integrated busbar assembly 100 and the outside. By arranging multiple flexible circuit boards 10 and their corresponding multiple metal bars 20, the connection capability of the integrated busbar assembly 100 to larger-scale cells can be realized.

[0057] like Figure 5-Figure 6 As shown, the two extension terminals 204 can also be located on the adjacent two sides of the injection molded bracket 30, wherein the adjacent two sides refer to the two sides that are connected to each other. Such a setting allows the integrated busbar assemblies 100 on the adjacent sides to be electrically connected to each other when multiple integrated busbar assemblies 100 are arranged side by side, which is convenient for expansion.

[0058] Among them Figure 6As shown, on the side facing each other of two adjacent integrated busbar assemblies 100 , one of the extension terminals 204 is provided with a first keyway 206 , and the other extension terminal 204 is provided with a first convex key 207 , and the first keyway 206 is connected to the first convex key 207 to achieve splicing between the two integrated busbar assemblies 100 .

[0059] Another extension terminal 204 on the integrated busbar assembly 100 may also be provided with a first keyway 206 or a first convex key 207 , or a connection hole 205 may be provided thereon.

[0060] By arranging two extension terminals 204 on adjacent sides of the injection-molded bracket 30 , and providing a first keyway 206 or a first convex key 207 on at least one of the extension terminals 204 , a convenient, efficient and reliable connection relationship can be achieved between multiple integrated busbar assemblies 100 .

[0061] Further, see Figure 7 The injection molded bracket 30 also includes an extension portion 302, on which a second keyway 303 or a second convex key 304 is provided. The second keyway 303 is used to connect to the second convex key 304 of the extension portion 302 on another integrated busbar assembly 100. The connection is strengthened by the cooperation of the second keyway 303 and the second convex key 304, thereby further improving the overall strength of the two mutually spliced ​​integrated busbar assemblies 100, making the connection more reliable.

[0062] Furthermore, the injection molded bracket 30 is provided with avoidance openings 301 on both opposite sides, so that the two sides of the power connection part 201 are exposed through the avoidance openings 301 on the opposite sides of the injection molded bracket 30, respectively, so that both sides of the power connection part 201 can be electrically connected to the battery cells, thereby greatly increasing the number of battery cells that can be connected to the integrated busbar assembly 100, and realizing the series or parallel connection of multiple single battery cells to achieve the rated output power. Alternatively, the battery cells can be electrically connected to the power connection part 201 on only one side of the injection molded bracket 30, and the avoidance openings 301 on the other side are vacant, which are used for heat dissipation of the power connection part 201, thereby improving the heat dissipation efficiency of the integrated busbar assembly 100.

[0063] Based on this, the present application also provides a battery, which includes a plurality of battery cells and the integrated busbar assembly 100 as described above, and each battery cell corresponds to an electrical connection portion 201 on the integrated busbar assembly 100 which is electrically connected.

[0064] The embodiment of the present application also discloses an electric device, which includes the battery as described above. The electric device may be a new energy electric vehicle, a hybrid vehicle, or an outdoor battery pack.

[0065] Compared with the prior art, the present application discloses an integrated busbar assembly 100, a battery and electrical equipment. By first electrically connecting multiple metal bars to the flexible circuit board, and then covering the flexible circuit board and the multiple metal bars with an injection molding bracket, the integrated busbar assembly can be arranged in one piece, reducing assembly errors, while supporting electronic components such as the flexible circuit board. The injection molding bracket can protect electronic components such as the flexible circuit board from external factors and interference, thereby improving the anti-interference ability and operational stability of the integrated busbar assembly, making the accuracy of information collection higher. At the same time, the injection molding bracket further improves the overall strength of the integrated busbar assembly, making the integrated busbar assembly more resistant to destructive forces and less prone to breakage.

[0066] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An integrated busbar assembly, characterized in that: include: Flexible circuit boards; A plurality of metal bars, each electrically connected to the flexible circuit board; The injection molded bracket covers the flexible circuit board and the plurality of metal bars. A plurality of avoidance openings are provided on at least one side of the injection molded bracket. The power connection parts of the metal bars are exposed from the corresponding avoidance openings. The power connection parts are used to electrically connect the battery cells.

2. The integrated busbar assembly according to claim 1, characterized in that: The multiple metal rows include at least two first metal rows and at least one second metal row, the first metal row includes a main body and an extension terminal, the main body and the second metal row are both enclosed in the injection molded bracket, the power connection parts on the main body and the second metal row are exposed from the corresponding avoidance openings, and the extension terminal extends outside the injection molded bracket.

3. The integrated busbar assembly according to claim 2, characterized in that: The two extension terminals are respectively located on opposite sides of the injection-molded bracket; or The two extension terminals are respectively located on two adjacent sides of the injection-molded bracket.

4. The integrated busbar assembly according to claim 2 or 3, characterized in that: The extension terminal is provided with a connection hole, and the connection hole is used to connect a fastener.

5. The integrated busbar assembly according to claim 2 or 3, characterized in that: At least one of the extension terminals is provided with a first keyway or a first convex key, and the first keyway of the extension terminal is used to connect to the first convex key of an extension terminal on another integrated busbar assembly.

6. The integrated busbar assembly according to claim 5, characterized in that: The injection molded bracket also includes an extension portion, on which a second keyway or a second convex key is provided, and the second keyway is used to connect to the second convex key of an extension portion on another integrated busbar assembly.

7. The integrated busbar assembly according to claim 1, characterized in that: The avoidance openings are arranged on opposite sides of the injection molding bracket, and the two sides of the power connection part are respectively exposed from the avoidance openings on the opposite sides of the injection molding bracket.

8. The integrated busbar assembly according to claim 1, characterized in that: There are multiple flexible circuit boards, which are arranged side by side. Each flexible circuit board is electrically connected to multiple metal bars, and the flexible circuit boards are electrically connected to each other through the metal bars. The injection molding bracket covers the multiple flexible circuit boards and the multiple metal bars.

9. The integrated busbar assembly according to claim 1, characterized in that: The injection-molded support is provided with at least one hollow opening, which passes through the injection-molded support and is arranged between two adjacent rows of metal rows.

10. The integrated busbar assembly according to claim 1, characterized in that: The integrated busbar assembly also includes a connector, which is electrically connected to the flexible circuit board and is located outside the injection molded bracket.

11. A battery, characterized in that: The battery comprises a plurality of battery cells and an integrated busbar assembly as claimed in any one of claims 1 to 9, and the plurality of battery cells are electrically connected to corresponding power connection parts respectively.

12. An electrical equipment, characterized in that: The electrical device comprises the battery as claimed in any one of claims 11.

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