Flexible circuit board assembly, connector, and battery module

Abstract

The utility model relates to battery structure technical field discloses a kind of flexible circuit board assembly, connector and battery module, comprising: flexible circuit board body, including body part and the transverse extension part connected with the body part, the transverse extension part includes at least two mutual non-conducting and is used to gather transmission cell data acquisition circuit part;The width of the transverse extension part is greater than the body part, all the acquisition circuit part can be bent and folded to form at least two layers structure, and each acquisition circuit part is connected with piercing crimp terminal;All the piercing crimp terminal can be connected with the same connector plug-in connection.The utility model relates to a kind of flexible circuit board assembly, connector and battery module, can be beneficial to improve the space utilization of battery module, and improve the port utilization of connector.

Description

Technical Field

[0001] This utility model relates to the field of battery structure technology, and in particular to a flexible circuit board assembly, connector and battery module. Background Technology

[0002] Existing battery modules have piercing crimp terminals at the ends of the flexible circuit boards, which can be plugged into connectors to eliminate the cost of adapter harnesses and other components, thus helping to reduce production costs.

[0003] In the piercing crimping scheme, each line at the end of the flexible circuit board needs to be connected to the piercing crimping terminal. Therefore, the line width and line spacing at the crimping point are relatively large, resulting in a larger total required insertion width. Furthermore, only one layer of the connector's insertion ports is utilized, leaving the other layer of the connector's insertion ports idle, which is clearly not conducive to improving space utilization and port utilization.

[0004] In view of this, there is a need to design a flexible circuit board assembly, connector and battery module that can help improve the space utilization of the battery module and the port utilization of the connector.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a flexible circuit board assembly, a connector, and a battery module, which can improve the space utilization of the battery module and the utilization of the connector's insertion ports.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A flexible circuit board assembly, comprising:

[0009] The flexible circuit board body includes a body portion and a lateral extension portion connecting the body portion, wherein the lateral extension portion includes at least two non-conductive acquisition line portions for acquiring and transmitting cell data.

[0010] The width of the lateral extension is greater than that of the main body, all the acquisition line sections can be bent and folded to form at least two layers, and each acquisition line section is connected to a piercing crimp terminal.

[0011] All of the aforementioned piercing crimp terminals can be plugged into the same connector.

[0012] Optionally, the lateral extension includes three of the acquisition line sections;

[0013] The first acquisition line section is the first acquisition section, the second acquisition line section is the second acquisition section, and the third acquisition line section is the third acquisition section;

[0014] The first acquisition part, the second acquisition part and the third acquisition part are connected sequentially in the horizontal direction. The width of the first acquisition part in the horizontal direction is A, and the total width of the second acquisition part and the third acquisition part in the horizontal direction is B, where A≥B. The connection position between the first acquisition part and the second acquisition part is concave and forms a bend.

[0015] When the first acquisition part and the second acquisition part are bent and joined around the bending part, the bending part protrudes from the first acquisition part and the second acquisition part, and forms a chamfer with the first acquisition part and the second acquisition part respectively.

[0016] Optionally, a clearance notch is formed between the second acquisition part and the third acquisition part, the clearance notch being used to avoid the protruding pressing part of the connector;

[0017] The clearance notch separates the piercing crimp terminal on the second collection section from the piercing crimp terminal on the third collection section.

[0018] Optionally, the lateral extension includes three of the acquisition line sections;

[0019] The first acquisition line section is the first acquisition section, the second acquisition line section is the second acquisition section, and the third acquisition line section is the third acquisition section;

[0020] The second acquisition unit, the first acquisition unit, and the third acquisition unit are sequentially connected in the lateral direction; the connection position between the first acquisition unit and the second acquisition unit is concave and forms a bend, and the second acquisition unit is bent and folded onto the first acquisition unit; the connection position between the first acquisition unit and the third acquisition unit is concave and forms a bend, and the third acquisition unit is bent and folded onto the first acquisition unit.

[0021] Optionally, the second and third acquisition units are folded onto opposite sides of the first acquisition unit, parallel to the lateral direction.

[0022] Optionally, the width of the first acquisition unit in the lateral direction is A, and the total width of the second and third acquisition units in the lateral direction is B, where A ≥ B;

[0023] The second and third acquisition units are folded onto the same side of the first acquisition unit.

[0024] Optionally, an insulating foam layer is provided between the acquisition circuit sections of different layers.

[0025] Optionally, two adjacent acquisition lines are connected by a bend, and different layers of the acquisition lines are respectively attached to the opposite two sides of the insulating foam layer, and the insulating foam layer extends to the bend.

[0026] A connector for mating connection with a flexible circuit board assembly as described in any of the preceding claims;

[0027] The connector is provided with at least two rows of ports at intervals, the ports being used for plugging and connecting with the piercing crimp terminals.

[0028] A battery module includes a flexible circuit board assembly as described in any of the preceding claims.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The flexible circuit board assembly, connector, and battery module provided by this utility model have a lateral extension that is wider than the main body. This allows for a more reasonable arrangement of the internal circuitry of the lateral extension and enables it to meet the connection needs of each piercing crimp terminal. The lateral extension forms multiple acquisition circuit sections, and all acquisition circuit sections can be bent and folded to form a multi-layer structure. This effectively reduces the width of the crimp joint, which is beneficial to improving the space utilization of the battery module. Furthermore, it allows at least two layers of ports of the connector to be utilized, significantly improving port utilization.

[0031] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the installation structure of the flexible circuit board assembly provided in this embodiment of the utility model;

[0034] Figure 2 This is a three-dimensional structural diagram of the flexible circuit board assembly provided in the embodiment of the present invention from a second view.

[0035] Figure 3This is a top view schematic diagram of the flexible circuit board assembly provided in an embodiment of the present utility model;

[0036] Figure 4 This is a three-dimensional structural schematic diagram of another flexible circuit board assembly provided in this embodiment of the present utility model;

[0037] Figure 5 yes Figure 4 Side view of a flexible circuit board assembly;

[0038] Figure 6 This is a schematic diagram of the circuit distribution of the flexible circuit board assembly provided in this embodiment of the present invention when it is not folded.

[0039] Figure 7 This is a schematic diagram of the circuit distribution of another flexible circuit board assembly provided in this embodiment of the present invention when it is not folded.

[0040] Reference numerals: 100, dividing line; 1, flexible circuit board body; 11, main body; 12, lateral extension; 121, acquisition line; 2, connector; 21, protruding pressing part; 31, first acquisition part; 32, second acquisition part; 33, third acquisition part; 301, bending part; 3011, chamfer; 302, clearance notch; 4, insulating foam layer. Detailed Implementation

[0041] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0042] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0043] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0044] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0045] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0046] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0047] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0048] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0049] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0050] Example 1

[0051] In view of the aforementioned deficiencies in existing flexible circuit board assemblies, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a solution that overcomes the shortcomings of existing technologies and makes flexible circuit board assemblies more practical. Through continuous research and design, and after repeated prototype production and improvements, this utility model with genuine practical value has finally been created.

[0052] Please refer to Figures 1 to 3 , Figure 6 This utility model provides a flexible circuit board assembly for improving the space utilization of a battery module and for improving the port utilization of a connector.

[0053] The flexible circuit board assembly includes a flexible circuit board body 1, which includes a body portion 11 and a lateral extension portion 12 connecting the body portion 11. The lateral extension portion 12 is separated by a dividing line 100. The lateral extension portion 12 includes at least two non-conductive acquisition line portions 121 used for acquiring and transmitting cell data.

[0054] The width of the lateral extension 12 is greater than that of the main body 11, thereby allowing for a larger line spacing and line width at the connection point of the crimp terminal, providing sufficient crimping area and strength to meet the requirements of connecting the crimp terminal and achieving a robust electrical and mechanical connection. All acquisition line sections 121 can be folded and assembled to form at least a two-layer structure, and each acquisition line section 121 is connected to a crimp terminal; all crimp terminals can be plugged into the same connector 2.

[0055] In this embodiment, the flexible circuit board assembly has a lateral extension 12 that is wider than the main body 11. This allows for a more rational arrangement of the internal wiring of the lateral extension 12 and enables it to adapt to the connection needs of each piercing crimp terminal. This allows the piercing crimp terminals to withstand greater pulling force, shear force, and vibration impact, improving connection reliability and mechanical strength. The lateral extension 12 forms multiple acquisition line sections 121, and all acquisition line sections 121 can be bent and folded to form a multi-layer structure. This effectively reduces the width of the crimp joint, allowing the connector 2 to be narrower. Folding increases wiring density, making the overall structure of the crimp joint more compact. This improves the space utilization of the battery module and ensures that at least two layers of ports on the connector 2 can be utilized, significantly improving port utilization.

[0056] Optionally, such as Figures 1 to 3 , Figure 6 The lateral extension 12 includes three acquisition line sections 121.

[0057] In this configuration, the first acquisition line section 121 is the first acquisition section 31, the second acquisition line section 121 is the second acquisition section 32, and the third acquisition line section 121 is the third acquisition section 33. The connection between the second acquisition section 32 and the third acquisition section 33 results in a structure that can be stacked on top of the first acquisition section 31. This folding process helps to improve production efficiency and reduce manufacturing costs.

[0058] The first collecting part 31, the second collecting part 32, and the third collecting part 33 are connected sequentially in the horizontal direction. The width of the first collecting part 31 in the horizontal direction is A, and the total width of the second collecting part 32 and the third collecting part 33 in the horizontal direction is B. A ≥ B, that is, the total width of the second collecting part 32 and the third collecting part 33 in the horizontal direction is less than the width of the first collecting part 31 in the horizontal direction, so as to avoid the part of the second collecting part 32 or the part of the third collecting part 33 extending beyond the edge of the first collecting part 31 after folding.

[0059] Furthermore, the connection position between the first collecting part 31 and the second collecting part 32 is recessed and forms a bent part 301; when the first collecting part 31 and the second collecting part 32 are bent and joined around the bent part 301, the bent part 301 protrudes from the first collecting part 31 and the second collecting part 32, and forms a chamfer 3011 with the first collecting part 31 and the second collecting part 32 respectively. The chamfer 3011 reduces the length of the bent portion 301. On the one hand, the chamfer 3011 facilitates forming and processing, making the bent portion 301 easier to bend and improving production quality. On the other hand, the chamfer 3011 reduces stress concentration and avoids excessive local stress that could lead to cracking or fatigue failure of the flexible circuit board assembly. Preferably, the chamfer 3011 is a smooth, rounded chamfer. The rounded chamfer transition between the bent portion 301 and the first acquisition portion 31 reduces the possibility of tearing at the bent portion 301. At the same time, it makes it easier to align and assemble the acquisition line portion 121 with the connector 2, reducing assembly resistance.

[0060] Optionally, a clearance notch 302 is formed between the second acquisition part 32 and the third acquisition part 33. The clearance notch 302 is used to avoid the protruding pressing part 21 of the connector 2. The clearance notch 302 separates the piercing crimp terminal on the second acquisition part 32 and the piercing crimp terminal on the third acquisition part 33, so as to avoid interference between the lines on the second acquisition part 32 and the lines on the third acquisition part 33. For example, it avoids the voltage of the sampling line from affecting the voltage of the temperature detection circuit, thereby achieving electrical insulation and ensuring the accuracy and safety of the detection.

[0061] Optionally, such as Figure 4 , Figure 5 and Figure 7 In a second specific embodiment, the lateral extension 12 includes three acquisition line sections 121; the first acquisition line section 121 is a first acquisition section 31, the second acquisition line section 121 is a second acquisition section 32, and the third acquisition line section 121 is a third acquisition section 33; the second acquisition section 32, the first acquisition section 31, and the third acquisition section 33 are sequentially connected in the lateral direction; the connection position between the first acquisition section 31 and the second acquisition section 32 is recessed and forms a bend 301, and the second acquisition section 32 is bent and folded onto the first acquisition section 31; the connection position between the first acquisition section 31 and the third acquisition section 33 is recessed and forms a bend 301, and the third acquisition section 33 is bent and folded onto the first acquisition section 31. Figure 7The second collecting part 32 is folded and overlapped on the top surface of the first collecting part 31, and the third collecting part 33 is also folded and overlapped on the top surface of the first collecting part 31. The overlapped second collecting part 32 and third collecting part 33 are located on the same side of the first collecting part 31, making it easier to observe and test the actual overlap effect. Preferably, there is a gap between the overlapped second collecting part 32 and third collecting part 33, with the protruding pressing part 21 positioned within the gap, so as not to affect the insertion connection of the piercing crimp terminals on the second collecting part 32 and third collecting part 33.

[0062] Optionally, in a third specific embodiment, the second acquisition unit 32 and the third acquisition unit 33 are folded onto opposite sides of the first acquisition unit 31 parallel to the lateral direction. For example, when the width of the second acquisition unit 32 is similar to that of the first acquisition unit 31, and the width of the third acquisition unit 33 is similar to that of the first acquisition unit 31, folding them into an S-shaped structure can result in a smaller final insertion width, better meeting actual insertion needs, and saving internal space of the battery module.

[0063] Optionally, the width of the first collecting part 31 in the lateral direction is A, and the total width of the second collecting part 32 and the third collecting part 33 in the lateral direction is B, where A ≥ B; the second collecting part 32 and the third collecting part 33 are folded on the same side of the first collecting part 31, which can prevent the second collecting part 32 and the third collecting part 33 from extending beyond the edge of the first collecting part 31.

[0064] Optionally, an insulating foam layer 4 is provided between different layers of the acquisition line section 121. The insulating foam layer 4 not only provides a buffering effect, but also has good insulation effect, which can reduce the possibility of signal interference.

[0065] Optionally, two adjacent acquisition line sections 121 are connected by a bending section 301. Different layers of acquisition line sections 121 are respectively attached to the opposite two sides of the insulating foam layer 4, and the insulating foam layer 4 extends to the bending section 301 to provide uniform support, ensure the smoothness and consistency of the bending section 301, disperse bending stress, protect the flexible circuit board assembly, improve the reliability of the flexible circuit board assembly, and thus improve the reliability of the battery module.

[0066] Example 2

[0067] This embodiment discloses a connector 2 for mating with the flexible circuit board assembly described in any one of embodiments 1. The connector 2 has at least two rows of ports spaced apart, and the ports are used for mating with piercing crimp terminals. The multiple rows of ports provide greater positive pressure and friction, resulting in a stronger bond between the flexible circuit board assembly and the connector 2. Compared to a single layer, the folded flexible circuit board assembly has better vibration resistance, impact resistance, and anti-swaying performance during insertion and removal, while maximizing space utilization. Preferably, in actual mating, each port on the connector 2 is inserted with a piercing crimp terminal, and the number of ports on the connector 2 matches the number of piercing crimp terminals.

[0068] Example 2

[0069] This embodiment discloses a battery module, including a flexible circuit board assembly as described in Embodiment 1.

[0070] Battery modules may also include other necessary components, such as housing, battery management module, cooling device for cooling battery structure, etc.

[0071] Battery modules are used to power electrical devices, which can be cars, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, medical devices, and power tools, etc.

[0072] Among them, automobiles can be fuel-powered automobiles, natural gas-powered automobiles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0073] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A flexible circuit board assembly, characterized in that, include: The flexible circuit board body (1) includes a body part (11) and a lateral extension part (12) connecting the body part (11). The lateral extension part (12) includes at least two non-conductive acquisition line parts (121) for acquiring and transmitting cell data. The width of the lateral extension (12) is greater than that of the main body (11), all the acquisition line parts (121) can be bent and folded to form at least two layers of structure, and each acquisition line part (121) is connected to a piercing crimp terminal. All of the aforementioned piercing crimp terminals can be plugged into the same connector (2).

2. The flexible circuit board assembly according to claim 1, characterized in that, The lateral extension (12) includes three of the acquisition line sections (121); The first acquisition line section (121) is the first acquisition section (31), the second acquisition line section (121) is the second acquisition section (32), and the third acquisition line section (121) is the third acquisition section (33); The first acquisition part (31), the second acquisition part (32) and the third acquisition part (33) are connected sequentially in the transverse direction. The width of the first acquisition part (31) in the transverse direction is A, and the total width of the second acquisition part (32) and the third acquisition part (33) in the transverse direction is B, A≥B. The connection position between the first acquisition part (31) and the second acquisition part (32) is concave and forms a bend (301). When the first acquisition part (31) and the second acquisition part (32) are bent and folded around the bending part (301), the bending part (301) protrudes from the first acquisition part (31) and the second acquisition part (32) and forms a chamfer (3011) with the first acquisition part (31) and the second acquisition part (32) respectively.

3. The flexible circuit board assembly according to claim 2, characterized in that, An avoidance notch (302) is formed between the second acquisition part (32) and the third acquisition part (33), and the avoidance notch (302) is used to avoid the protruding pressing part (21) of the connector (2); The clearance notch (302) separates the piercing crimp terminal on the second acquisition section (32) from the piercing crimp terminal on the third acquisition section (33).

4. The flexible circuit board assembly according to claim 1, characterized in that, The lateral extension (12) includes three of the acquisition line sections (121); The first acquisition line section (121) is the first acquisition section (31), the second acquisition line section (121) is the second acquisition section (32), and the third acquisition line section (121) is the third acquisition section (33); The second acquisition unit (32), the first acquisition unit (31), and the third acquisition unit (33) are sequentially connected in the transverse direction; the connection position between the first acquisition unit (31) and the second acquisition unit (32) is recessed and forms a bend (301), and the second acquisition unit (32) is bent and folded on the first acquisition unit (31); the connection position between the first acquisition unit (31) and the third acquisition unit (33) is recessed and forms a bend (301), and the third acquisition unit (33) is bent and folded on the first acquisition unit (31).

5. The flexible circuit board assembly according to claim 4, characterized in that, The second acquisition unit (32) and the third acquisition unit (33) are folded on opposite sides of the first acquisition unit (31) in the lateral direction.

6. The flexible circuit board assembly according to claim 4, characterized in that, The width of the first acquisition unit (31) in the horizontal direction is A, and the total width of the second acquisition unit (32) and the third acquisition unit (33) in the horizontal direction is B, where A≥B; The second acquisition unit (32) and the third acquisition unit (33) are folded on the same side of the first acquisition unit (31).

7. The flexible circuit board assembly according to claim 1, characterized in that, An insulating foam layer (4) is provided between the acquisition circuit sections (121) of different layers.

8. The flexible circuit board assembly according to claim 7, characterized in that, Two adjacent acquisition line sections (121) are connected by a bend (301), and different layers of the acquisition line sections (121) are respectively attached to the opposite two sides of the insulating foam layer (4), and the insulating foam layer (4) extends to the bend (301).

9. A connector, characterized in that, For use in plug-in connection with the flexible circuit board assembly according to any one of claims 1 to 8; The connector (2) is provided with at least two rows of ports at intervals, the ports being used for plugging and connecting with the piercing crimp terminals.

10. A battery module, characterized in that, It includes a flexible circuit board assembly as described in any one of claims 1 to 8.

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