Connection, circuit board, battery pack and electrical equipment

Abstract

The embodiment of the application provides a connecting piece, a circuit board, a battery pack and an electric equipment, relates to the technical field of connecting pieces, and the connecting piece comprises at least one connecting body and a safety body, the connecting body and the safety body are integrally formed, and the connecting body is used for being connected with a battery cell or a base body of a collection circuit. According to the connecting piece provided by the embodiment of the application, the production process can be simplified, the production cost can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of connector technology, and more particularly to a connector, circuit board, battery pack and electrical equipment. Background Technology

[0002] Currently, battery packs are widely used in new energy vehicles and other electrical equipment. These battery packs typically include sampling devices to monitor the voltage, temperature, and other information of the battery cells in real time.

[0003] In related technologies, circuit boards or connectors are typically used to electrically connect to the terminals or casing of the battery cell, which facilitates the monitoring of individual battery cells and thus simplifies the circuit.

[0004] However, the manufacturing process of the connection bar of the existing battery pack sampling system is complex, affecting production costs and efficiency. Utility Model Content

[0005] Based on this, this application provides a connector, circuit board, battery pack, and electrical equipment to solve the problem that the manufacturing process of the connector in the existing battery pack is complicated, affecting production costs and efficiency.

[0006] In a first aspect, this application provides a connector, including at least one connector body and a fuse body, the connector body and the fuse body being integrally formed, the connector body being used to connect to the base of a battery cell or a data acquisition circuit.

[0007] In one possible implementation, at least one connector includes a first connector and a second connector, with the safety element connected between the first connector and the second connector.

[0008] In one possible implementation, the first connector includes a first connecting segment and a second connecting segment, with a first bend between the second connecting segment and the first connecting segment;

[0009] The first connecting section is connected to the fuse, and the second connecting section is used to connect to the battery cell.

[0010] In one possible implementation, there is a protrusion or groove between the first connecting segment and the second connecting segment, with part of the protrusion or groove located on the first bend.

[0011] In one possible implementation, the first connector further includes a third connecting segment, which has a second bend between it and the second connecting segment;

[0012] The third connecting segment is connected to the second connecting segment on the side opposite to the first connecting segment and is used to connect to the battery cell.

[0013] In one possible implementation, there is a protrusion or groove between the second connecting segment and the third connecting segment, with part of the protrusion or groove located on the second bend.

[0014] In one possible implementation, the height of the protrusion or the depth of the groove is 0.24 mm to 0.41 mm.

[0015] In one possible implementation, the second connector includes a fourth connecting segment and a fifth connecting segment, the fourth connecting segment being connected to the safety body;

[0016] The fifth connection segment is connected to the side of the fourth connection segment opposite to the fuse and is used to connect to the base of the battery cell or the acquisition circuit.

[0017] In one possible implementation, the safety element is curved.

[0018] In one possible implementation, the safety element includes multiple curved segments that are connected in sequence to form a wavy or sawtooth shape.

[0019] In one possible implementation, at least one of the connector and the safety element is a metal foil.

[0020] In one possible implementation, the connector and the safety element are aluminum foil.

[0021] Secondly, this application also provides a circuit board, including a first substrate and any one of the connectors provided in the first aspect.

[0022] In one possible implementation, multiple connectors are spaced apart on the first substrate.

[0023] In one possible implementation, the first substrate includes two covering films, with each connector located between the two covering films, and at least a portion of the connector and the safety body are pressed against the two covering films respectively.

[0024] In one possible implementation, a through hole is provided on the first substrate to expose the portion where the connector connects to the battery cell.

[0025] In one possible implementation, at least one acquisition component is also included, which is disposed on the first substrate and electrically connected to each connector.

[0026] In one possible implementation, the acquisition component includes a second substrate and an acquisition module, with the second substrate connected to the first substrate;

[0027] The acquisition module is connected to the second substrate and electrically connected to each connector.

[0028] In one possible implementation, the first substrate has a first acquisition circuit, and each connector is electrically connected to the first acquisition circuit.

[0029] The second substrate has a second acquisition circuit, which is electrically connected to the first acquisition circuit, and the acquisition module is electrically connected to the second acquisition circuit.

[0030] In one possible implementation, a plurality of conductors are disposed on the periphery of the second substrate, and each conductor is connected to the first acquisition circuit and the second acquisition circuit respectively.

[0031] In one possible implementation, the conductor is a conductive wire.

[0032] Thirdly, this application also provides a battery pack, including a battery pack body, on which any of the connectors provided in the first aspect are disposed;

[0033] Alternatively, the battery pack body may be equipped with any of the circuit boards provided in the second aspect.

[0034] Fourthly, this application also provides an electrical device, including a device body, on which a battery pack provided in the third aspect is disposed.

[0035] The connector, circuit board, battery pack, and electrical equipment provided in this application include at least one connector body and a fuse body. By integrating the connector body and fuse body into a single piece, rapid processing and molding are facilitated, the production process is simplified, and product consistency is ensured. The connector body connects to the base of the battery cell or the data acquisition circuit, simplifying the sampling circuit. The fuse body provides overvoltage protection. Therefore, the connector provided in this application simplifies the production process, reduces production costs, and improves production efficiency. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of the connector provided in the embodiments of this application;

[0038] Figure 2 This is a schematic diagram of the structure of a circuit board provided in an embodiment of this application;

[0039] Figure 3 for Figure 2 Schematic diagram of the structure of the first matrix;

[0040] Figure 4 This application provides a schematic diagram illustrating the connection relationship between a circuit board and a battery pack in an embodiment of the present application.

[0041] Figure 5 This is a schematic diagram of another circuit board structure provided in an embodiment of this application;

[0042] Figure 6 This application provides another schematic diagram of the connection relationship between a circuit board and a battery pack.

[0043] Figure label:

[0044] 10: Battery cells;

[0045] 20: Connecting piece;

[0046] 100: First connector;

[0047] 101: First bend;

[0048] 102: Second bend;

[0049] 103: Protrusion;

[0050] 104: Groove;

[0051] 110: First connecting segment;

[0052] 120: Second connecting segment;

[0053] 130: Third connecting segment;

[0054] 200: Second connector;

[0055] 210: Fourth connecting segment;

[0056] 220: Fifth connecting segment;

[0057] 300: Insurance unit;

[0058] 400: First matrix;

[0059] 410: Through hole;

[0060] 500: Data acquisition component;

[0061] 510: Second matrix;

[0062] 511: Conductor;

[0063] 520: Data Acquisition Module. Detailed Implementation

[0064] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of methods and apparatus consistent with some aspects of this application as detailed in the appended claims.

[0065] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0066] Currently, the connection bars in the sampling devices used in battery modules contain a large number of nickel sheets. Nickel sheets are precious metals, and the metal itself is expensive. On the one hand, additional costs are required to process the required shape. On the other hand, SMT is mounted on FPC. SMT is risky, with complex processes such as tinning, soldering, and reflow. Each step has the risk of failure, resulting in low efficiency of the entire process and increased costs.

[0067] To address the aforementioned problems in the prior art, this application provides a connector, a circuit board, a battery pack, and an electrical device. The circuit board provided by this application includes at least one connector and a fuse. By integrally molding the connector and fuse, rapid processing and molding are facilitated, the production process is simplified, and product consistency is ensured. The connector connects to the base of the battery cell or the data acquisition circuit, simplifying the sampling circuit. Furthermore, the fuse provides overvoltage protection, thereby reducing production costs and improving production efficiency.

[0068] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0069] Firstly, please refer to Figure 1As shown in the figure, this application embodiment provides a connector, including at least one connector body and a fuse body 300, the connector body and the fuse body 300 are integrally formed, and the connector body is used to connect to the base of the battery cell 10 or the acquisition circuit.

[0070] In this embodiment, the connector and the safety element 300 are conductors, and can be made of metals such as aluminum or copper, and can be in the form of sheets or plates. Furthermore, the safety element 300 can also be in the form of a fine filament.

[0071] The connector can be attached to the housing or terminal of the battery cell 10 by welding, bonding, screwing, or other methods, or to the base of the acquisition circuit by welding, bonding, screwing, or other methods, which simplifies the sampling circuit of the battery cell 10. The fuse 300 is electrically connected to the connector and serves at least to protect the acquisition circuit.

[0072] It is understandable that, compared to the existing connecting bars made by welding nickel sheets, the connectors, connecting bodies and safety bodies 300 in the embodiments of this application can be processed by laser cutting or die cutting, and can be formed in one piece, which facilitates rapid processing, simplifies the production process, ensures product consistency, thereby reducing production costs and improving production efficiency.

[0073] Therefore, the connector provided in this application embodiment includes at least one connector and a fuse 300. By making the connector and fuse 300 integrally formed, it is easy to process and form quickly, simplify the production process, and ensure product consistency. The connector is connected to the base of the battery cell 10 or the acquisition circuit, which facilitates the simplification of the sampling circuit. The fuse 300 provides overvoltage protection, thereby reducing production costs and improving production efficiency.

[0074] In some embodiments, at least one connector includes a first connector 100 and a second connector 200, and a safety body 300 is connected between the first connector 100 and the second connector 200.

[0075] For example, the first connector 100 can be connected to the housing of the battery cell 10, the second connector 200 can be connected to the terminal of the battery cell 10 or to the acquisition circuit in the circuit board, and the fuse 300 protects the housing from the terminal or the acquisition circuit, further simplifying the circuit.

[0076] Furthermore, in this embodiment, the first connector 100 includes a first connector segment 110 and a second connector segment 120, and a first bend 101 is provided between the second connector segment 120 and the first connector segment 110.

[0077] The first connecting section 110 is connected to the fuse 300, and the second connecting section 120 is used to connect to the battery cell 10.

[0078] Specifically, such as Figure 1 As shown, the second connecting segment 120 bends to one side relative to the first connecting segment 110, such as around... Figure 1 The X-axis is bent 90° clockwise and connected to the fuse 300 through the first connecting section 110, and the second connecting section 120 is connected to the housing of the battery cell 10, thereby meeting the installation requirements.

[0079] The specific shape and size of the first connecting segment 110 and the second connecting segment 120, as well as the direction and angle of the bending of the second connecting segment 120, can be determined according to actual needs, and are not specifically limited in this embodiment.

[0080] Furthermore, in this embodiment, there is a protrusion 103 or a groove 104 between the first connecting segment 110 and the second connecting segment 120, and part of the protrusion 103 or part of the groove 104 is located on the first bending portion 101.

[0081] For example, such as Figure 1 As shown, protrusions 103 are formed on the first bent portion 101 and the connected portion of the first connecting segment 110 and the portion of the second connecting segment 120, with the protrusions 103 facing towards... Figure 1 It protrudes from the upper left. Alternatively, this protrusion 103 can be replaced with a groove 104, with the groove 104 facing... Figure 1 The recess is located in the lower right corner. Both the protrusion 103 and the groove 104 can be formed by molding. This can be determined according to actual needs; this embodiment does not impose excessive restrictions.

[0082] In this way, the protrusion 103 or the groove 104 can effectively prevent the springback deformation of the first bending part 101 and also improve its structural strength.

[0083] Furthermore, in this embodiment, the first connecting body 100 also includes a third connecting segment 130, and a second bending portion 102 is provided between the third connecting segment 130 and the second connecting segment 120. The bending direction of the second bending portion 102 is opposite to that of the first bending portion 101.

[0084] The third connecting segment 130 is connected to the second connecting segment 120 on the side opposite to the first connecting segment 110 and is used to connect to the battery cell 10.

[0085] Specifically, such as Figure 1 As shown, the third connecting segment 130 bends to the other side relative to the second connecting segment 120, as if... Figure 1 The X-axis is bent 90° counterclockwise and connected to the housing of the battery cell 10 through the third connecting section 130, thereby further meeting the installation requirements.

[0086] Of course, the first connecting body 100 can also be composed of more connecting segments. The specific number of connecting segments, as well as the bending direction and angle of the third connecting segment 130, can be determined according to actual needs. This embodiment does not impose specific limitations.

[0087] Furthermore, in this embodiment, there is a protrusion 103 or a groove 104 between the second connecting segment 120 and the third connecting segment 130, and part of the protrusion 103 or part of the groove 104 is located on the second bending portion 102.

[0088] For example, such as Figure 1 As shown, protrusions 103 are formed on the first bent portion 101 and the connected portion of the first connecting segment 110 and the portion of the second connecting segment 120, with the protrusions 103 facing towards... Figure 1 The upper left protrusion is in the middle. The second bent portion 102 and the connected portion of the second connecting section 120 and the portion of the third connecting section 130 have grooves 104 formed on them, with the grooves 104 facing... Figure 1 The recess is located in the lower right corner. Alternatively, the recess 104 can be replaced with a protrusion 103, with the protrusion 103 facing... Figure 1 The upper left corner protrudes. Both the protrusion 103 and the groove 104 can be formed by molding. This can be determined according to actual needs; this embodiment does not impose excessive restrictions.

[0089] In this way, the protrusion 103 or the groove 104 can effectively prevent the second bending part 102 from springing back and deforming, and also improve its structural strength.

[0090] Furthermore, in this embodiment, the height of the protrusion 103 and / or the depth of the groove 104 is 0.24mm to 0.41mm.

[0091] For example, the height of the protrusion 103 relative to the surface is 0.24mm~0.41mm, and the depth of the groove 104 relative to the surface is 0.24mm~0.41mm. By using appropriate height or depth, the protrusion 103 and groove 104 are prevented from cracking during molding while ensuring no springback and strength. The specific height of the protrusion 103 and the specific depth of the groove 104 can be determined according to actual needs, and no excessive restrictions are imposed in this embodiment.

[0092] In some embodiments, the second connector 200 includes a fourth connector segment 210 and a fifth connector segment 220, wherein the fourth connector segment 210 is connected to the safety body 300.

[0093] The fifth connecting segment 220 is connected to the side of the fourth connecting segment 210 away from the fuse 300 and is used to connect to the battery cell 10 or the base of the acquisition circuit.

[0094] Specifically, such as Figure 1, Figure 4 As shown, the fourth connecting section 210 serves as a transitional connection, connecting the safety body 300 and the fifth connecting section 220, and can be designed into the required structural shape according to actual installation needs.

[0095] The fifth connecting segment 220 is used to connect to the terminal of the battery cell 10 or the substrate of the acquisition circuit. It can be made into a circular, rectangular, or other sheet-like structure to increase the contact area with the terminal. It should be noted that the fifth connecting segment 220 can be directly connected to the terminal of the battery cell 10 or connected to the connecting piece 20 of the battery cell 10. However, the specific shape and size of the fourth connecting segment 210 and the fifth connecting segment 220 can be determined according to actual needs, and this embodiment does not impose too many restrictions.

[0096] In some embodiments, the safety element 300 is curved. This prevents the safety element 300 from being damaged due to thermal expansion and contraction during processing or use.

[0097] Furthermore, in this embodiment, the safety body 300 includes multiple curved segments, which are connected in sequence to form a wave-like or sawtooth shape.

[0098] Specifically, continue as Figure 1 As shown, multiple curved segments are connected sequentially to form a wave-like or sawtooth shape, thereby increasing the total length of the safety element 300 within a limited space and improving its stability. The specific shape, length, and specifications of the safety element 300 can be determined according to actual needs, and this embodiment does not impose too many restrictions.

[0099] It should be noted that if the safety body 300 is too thin, the shape of the safety body 300 can be cut out by laser first, and then the first connector 100 and the second connector 200 can be processed by die cutting.

[0100] In some embodiments, at least one of the connector and the safety element 300 is a metal foil. Further, the connector and the safety element 300 are aluminum foil. That is, the first connector 100, the second connector 200, and the safety element 300 are aluminum foil.

[0101] This design ensures better conductivity and processability while further reducing costs. Of course, copper foil or other materials can also be used, depending on actual needs; this embodiment does not impose too many restrictions.

[0102] Secondly, such as Figure 2 As shown in the illustration, this application also provides a circuit board, including a first substrate 400 and a plurality of connectors provided in any of the above embodiments. This circuit board is also known as a flexible circuit board, a flexible die-cut circuit board, a connector bar, etc.

[0103] The structure of the connector has been described in detail in the above embodiments and will not be repeated here.

[0104] The circuit board provided in this application embodiment is configured with a connector, which includes at least one connector body and a fuse body 300. By making the connector body and fuse body 300 integrally molded, it is easy to process and mold quickly, simplify the production process, and ensure product consistency. The connector body is set to connect with the battery cell, which facilitates the simplification of the sampling circuit. The fuse body 300 plays an overvoltage protection role, thereby reducing production costs and improving production efficiency.

[0105] In some embodiments, a plurality of connectors are spaced apart on the first substrate 400. The first substrate 400 can serve to fix or protect the connectors, and can be elongated, strip-shaped, or similar. For example, the plurality of connectors can be spaced apart along the length of the first substrate 400. The number of connectors depends on the number of battery cells 10, and can range from 10 to 40.

[0106] Furthermore, in this embodiment, the first substrate 400 includes two covering films, each connector is located between the two covering films, and at least a portion of the connector and the safety body 300 are respectively pressed into the two covering films.

[0107] That is, the two covering films are respectively pressed onto the two sides of the connector and the safety body 300, thereby providing insulation protection and fixing the connection.

[0108] Furthermore, in this embodiment, the first substrate 400 has a through hole 410, which is used to expose the portion of the connector that connects to the battery cell 10. For example, the through hole 410 is used to expose the portion of the first connector 100 that connects to the housing of the battery cell 10. Alternatively, the through hole 410 is used to expose the portion of the second connector 200 that connects to the terminal of the battery cell 10.

[0109] For example, such as Figure 3 As shown, a rectangular through hole 410 can be formed on the first base 400 corresponding to the part where the first connector 100 is connected to the shell, and a circular through hole 410 can be formed on the part of the first base 400 corresponding to the part where the second connector 200 is connected to the pole post, thereby facilitating welding connection processing.

[0110] Of course, the through hole 410 can also be other shapes. The specific shape, size, and position of the through hole 410 can be determined according to the actual processing requirements. This embodiment does not impose too many restrictions.

[0111] In addition, clearance holes may be provided on the first substrate 400 for the protrusions 103 or the grooves 104 (that is, protruding to the other side) to avoid interference and maintain flatness.

[0112] In other embodiments, the circuit board provided in this application further includes at least one acquisition component 500, which is disposed on the first substrate 400 and electrically connected to each connector.

[0113] Specifically, such as Figure 5 , Figure 6 As shown, the acquisition component 500 can be a voltage acquisition component or a temperature acquisition component, etc. It is set on the first base 400, and can acquire information such as voltage and temperature on each cell 10 through each connector, thereby eliminating the need for additional circuits and simplifying the process.

[0114] Furthermore, in this embodiment, the acquisition component 500 includes a second substrate 510 and an acquisition module 520, with the second substrate 510 connected to the first substrate 400.

[0115] The acquisition module 520 is connected to the second base 510 and is electrically connected to each connector.

[0116] Specifically, such as Figure 5 As shown, the second substrate 510 can also be an insulating film, circuit board, etc., which can be connected to the first substrate 400 by welding, bonding, or other methods. The acquisition module 520 can be a voltage acquisition module or a temperature acquisition module, etc., thereby realizing the acquisition of information of the battery cell 10 through various connectors.

[0117] The specific type, quantity, and location of the acquisition module 520 can be determined according to actual needs, and this embodiment does not impose too many restrictions.

[0118] Furthermore, in this embodiment, the first substrate 400 has a first acquisition circuit, and each connector is electrically connected to the first acquisition circuit.

[0119] The second substrate 510 has a second acquisition circuit, which is electrically connected to the first acquisition circuit, and the acquisition module 520 is electrically connected to the second acquisition circuit.

[0120] Specifically, such as Figure 5 As shown, the first acquisition circuit is arranged in the first substrate 400, and all connectors are electrically connected to the first acquisition circuit to improve integration. Simultaneously, the second acquisition circuit is arranged in the second substrate 510, and the second acquisition circuit is electrically connected to the first acquisition circuit. The acquisition module 520 is then electrically connected to the second acquisition circuit to further improve integration and achieve circuit integration.

[0121] Furthermore, in this embodiment, a plurality of conductors 511 are disposed around the second substrate 510, and each conductor 511 is connected to the first acquisition circuit and the second acquisition circuit respectively.

[0122] In this way, the first acquisition circuit and the second acquisition circuit are electrically connected through each conductor 511, which facilitates production and processing.

[0123] Furthermore, in this embodiment, the conductor 511 is a conductive wire, such as an aluminum wire.

[0124] In this way, such as Figure 5 As shown, this design ensures better conductivity and processability while further reducing costs. Of course, copper foil, copper wire, etc., can also be used, depending on actual needs; this embodiment does not impose too many restrictions.

[0125] Thirdly, embodiments of this application also provide a battery pack, including a battery pack body, on which the connectors or circuit boards provided in any of the above embodiments are disposed. This allows for real-time monitoring of the voltage and temperature of each internal cell, enabling timely emergency response in the event of thermal runaway, thereby ensuring safety.

[0126] The battery pack provided in this application embodiment, by configuring a connector or a circuit board having such a connector, the connector including at least one connector body and a fuse body 300, by setting the connector body and the fuse body 300 as an integral molding, facilitates rapid processing and molding, simplifies the production process, ensures product consistency, sets the connector body to be connected to the base of the battery cell 10 or the acquisition circuit, facilitates the simplification of the sampling circuit, and provides overvoltage protection through the fuse body 300, thereby reducing production costs and improving production efficiency.

[0127] Fourthly, embodiments of this application also provide an electrical device, including a device body and a battery pack provided in any of the above embodiments disposed on the device body. The electrical device may include new energy vehicles and energy storage power stations, etc.

[0128] The electrical equipment provided in this application embodiment, by configuring a battery pack, includes the aforementioned connector, which includes at least one connector body and a fuse body 300. By making the connector body and fuse body 300 integrally molded, it is easy to process and mold quickly, simplify the production process, and ensure product consistency. The connector body is set to connect to the battery cell 10 or the base of the acquisition circuit, which facilitates the simplification of the sampling circuit. The fuse body 300 provides overvoltage protection, thereby reducing production costs and improving production efficiency.

[0129] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0130] It should be understood that this application is not limited to the precise structures described above and shown in the appendix, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A connector, characterized in that, It includes at least one connector and one fuse (300), the connector and the fuse (300) are integrally formed, and the connector is used to connect to the battery cell (10) or the base of the acquisition circuit; The at least one connector includes a first connector (100) and a second connector (200), and the safety element (300) is connected between the first connector (100) and the second connector (200).

2. The connector according to claim 1, characterized in that, The first connector (100) includes a first connecting segment (110) and a second connecting segment (120), and the second connecting segment (120) has a first bend (101) between it and the first connecting segment (110). The first connecting segment (110) is connected to the fuse (300), and the second connecting segment (120) is used to connect to the battery cell (10).

3. The connector according to claim 2, characterized in that, There is a protrusion (103) or a groove (104) between the first connecting segment (110) and the second connecting segment (120), and part of the protrusion (103) or part of the groove (104) is located on the first bend (101).

4. The connector according to claim 2, characterized in that, The first connector (100) further includes a third connector (130), which has a second bend (102) between the third connector (130) and the second connector (120). The third connecting segment (130) is connected to the second connecting segment (120) on the side opposite to the first connecting segment (110) and is used to connect to the battery cell (10).

5. The connector according to claim 4, characterized in that, The second connecting segment (120) and the third connecting segment (130) have a protrusion (103) or a groove (104), and part of the protrusion (103) or part of the groove (104) is located on the second bend (102).

6. The connector according to claim 3 or 5, characterized in that, The height of the protrusion (103) or the depth of the groove (104) is 0.24mm to 0.41mm.

7. The connector according to claim 1, characterized in that, The second connector (200) includes a fourth connector segment (210) and a fifth connector segment (220), wherein the fourth connector segment (210) is connected to the safety element (300); The fifth connecting segment (220) is connected to the side of the fourth connecting segment (210) away from the fuse (300) and is used to connect to the battery cell (10) or the base of the acquisition circuit.

8. The connector according to claim 1, characterized in that, The safety element (300) is curved.

9. The connector according to claim 8, characterized in that, The safety body (300) includes multiple curved segments, which are connected in sequence to form a wave-like or sawtooth shape.

10. The connector according to any one of claims 1 to 5 and 7 to 9, characterized in that, At least one of the connector and the safety element (300) is a metal foil.

11. The connector according to claim 10, characterized in that, The connector and the safety element (300) are made of aluminum foil.

12. A circuit board, characterized in that, It includes a first base (400) and a plurality of connectors as described in any one of claims 1 to 11.

13. The circuit board according to claim 12, characterized in that, The plurality of connectors are arranged at intervals on the first base (400).

14. The circuit board according to claim 12, characterized in that, The first substrate (400) includes two covering films, each of the connectors is located between the two covering films, and at least a portion of the connectors and the safety body (300) are respectively pressed into the two covering films.

15. The circuit board according to claim 14, characterized in that, The first substrate (400) has a through hole (410) for exposing the part of the connector that is connected to the battery cell (10).

16. The circuit board according to claim 13, characterized in that, It also includes at least one acquisition component (500), which is disposed on the first substrate (400) and electrically connected to each of the connectors.

17. The circuit board according to claim 16, characterized in that, The acquisition component (500) includes a second base (510) and an acquisition module (520), wherein the second base (510) is connected to the first base (400); The acquisition module (520) is connected to the second substrate (510) and electrically connected to each of the connectors.

18. The circuit board according to claim 17, characterized in that, The first substrate (400) has a first acquisition circuit, and each of the connectors is electrically connected to the first acquisition circuit; The second substrate (510) has a second acquisition circuit, which is electrically connected to the first acquisition circuit, and the acquisition module (520) is electrically connected to the second acquisition circuit.

19. The circuit board according to claim 18, characterized in that, The second substrate (510) has a plurality of conductors (511) disposed on its periphery, and each conductor (511) is connected to the first acquisition circuit and the second acquisition circuit respectively.

20. The circuit board according to claim 19, characterized in that, The conductor (511) is a conductive wire.

21. A battery pack, characterized in that, Includes a battery pack body, wherein the battery pack body is provided with a connector as described in any one of claims 1 to 11; Alternatively, the battery pack body may be provided with a circuit board as described in any one of claims 12 to 20.

22. An electrical appliance, characterized in that, It includes a device body, on which a battery pack as described in claim 21 is disposed.

Images