Flexible circuit board, battery device and electric equipment

Abstract

The utility model relates to a flexible circuit board, a battery device and electric equipment. The flexible circuit board comprises a circuit board body and an acquisition terminal, the first end of the acquisition terminal is connected to the circuit board body, the side face, facing the circuit board body, of the first end is made of a tin material, and the second end of the acquisition terminal extends out of the circuit board body. Wherein at least part of the area of the acquisition terminal is made of a ferromagnetic material; the collection terminal is provided with a fool-proof part, and the fool-proof part is configured to be used for recognizing the assembly posture of the collection terminal on the circuit board main body. According to the flexible circuit board, the tin material is directly constructed on the acquisition terminal, and the tin material is directly fused through high-temperature reflow soldering to realize welding, so that a good maintaining effect on positioning between the acquisition terminal and the circuit board main body is achieved. And by combining the fool-proof part and the ferromagnetic magnetic attraction fixation, the positioning accuracy of the acquisition terminal is improved, and the assembly precision of the acquisition terminal and the circuit board main body is improved, so that the battery signal acquisition accuracy of the flexible circuit board is improved.

Description

Technical Field

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

[0002] With the continuous development of the new energy industry, battery devices have been used more and more widely. In battery devices, the collection of signals such as battery voltage and temperature plays a key role in the normal operation of battery devices.

[0003] In the related art, the voltage and temperature signals of the battery are collected through a flexible circuit board. The flexible circuit board includes a circuit board body and a plurality of collection terminals. The collection terminals are connected to the circuit board body. During the connection between the collection terminals and the circuit board body, the positioning accuracy of the collection terminals on the circuit board body has an important impact on the subsequent signal collection accuracy.

[0004] In traditional flexible circuit boards, when the acquisition terminals are connected to the circuit board body, the acquisition terminals are prone to displacement, and the connection surfaces of the acquisition terminals and the circuit board body are also prone to confusion, resulting in inaccurate positioning of the acquisition terminals on the circuit board body. Utility Model Content

[0005] In view of the above problems, the present application provides a flexible circuit board, a battery device and an electrical device to improve the assembly accuracy of the flexible circuit board and ensure the accuracy of signal acquisition of the flexible circuit board.

[0006] In a first aspect, the present application provides a flexible circuit board, the flexible circuit board comprising:

[0007] Circuit board body;

[0008] A collection terminal, wherein the first end of the collection terminal is connected to the circuit board body, the side of the first end facing the circuit board body is made of tin, and the second end of the collection terminal extends out of the circuit board body;

[0009] Among them, at least a part of the area of ​​the collection terminal is constructed of ferromagnetic material; an anti-mistake portion is provided on the collection terminal, and the anti-mistake portion is configured to identify the assembly posture of the collection terminal on the circuit board body.

[0010] The flexible circuit board provided in the embodiment of the present application, by constructing the side of the collection terminal facing the circuit board body as tin material, when the collection terminal is connected to the circuit board body, the tin material can be directly melted by high-temperature reflow soldering to achieve welding, without the need to set other materials such as glue, solder, etc. between the collection terminal and the circuit board body, which has a good retention effect on the positioning between the collection terminal and the circuit board body. Secondly, by setting an anti-fool part on the collection terminal, the assembly posture of the collection terminal on the circuit board body is identified by the anti-fool part to prevent the collection terminal from being placed upside down. Furthermore, by constructing at least part of the area of ​​the collection terminal as ferromagnetic material, the collection terminal can be adsorbed and fixed by magnetic attraction to prevent the collection terminal from moving at will. Through the above structural design of the collection terminal, the positioning accuracy of the collection terminal is improved, which is conducive to improving the assembly accuracy of the collection terminal and the circuit board body, thereby improving the accuracy of the flexible circuit board in collecting battery signals.

[0011] In some embodiments, the collecting terminal has a plurality of corners, and at least one of the corners is provided with a fool-proof portion.

[0012] The flexible circuit board provided in the embodiment of the present application provides an anti-mistake portion at the corner of the collection terminal to identify the assembly angle of the collection terminal on the circuit board body, and distinguish the front and back sides of the collection terminal at the same time, to prevent the collection terminal from being placed upside down and using the wrong connection surface.

[0013] In some embodiments, when multiple corners of the collecting terminal are provided with fool-proofing portions, the fool-proofing portion of at least one of the corners is different from the other fool-proofing portions.

[0014] The flexible circuit board provided in the embodiment of the present application is configured in this way to ensure that the fool-proofing part plays a good fool-proofing function.

[0015] In some embodiments, the fool-proof portion is disposed at the second end of the collection terminal.

[0016] The flexible circuit board provided in the embodiment of the present application can quickly identify the second end of the collection terminal through the anti-foolproof part provided at the second end, and the first end is placed toward the circuit board body. The anti-foolproof part is provided at the second end to prevent the anti-foolproof part from affecting the connection between the collection terminal and the circuit board body.

[0017] In some embodiments, the second end of the collection terminal has two corners, at least one of which is provided with an anti-fouling portion.

[0018] The flexible circuit board provided in the embodiment of the present application has an anti-mistake portion at the corner of the second end, and can direct the connection surface of the collection terminal toward the circuit board body by limiting the position of the anti-mistake portion and the circuit board body.

[0019] In some embodiments, when both corners of the second end are provided with fool-proofing portions, the structures of the two fool-proofing portions are different.

[0020] The flexible circuit board provided in the embodiment of the present application is configured in this way so as to correctly identify the two corners.

[0021] In some embodiments, the fool-proofing portion is configured as a notch on the acquisition terminal.

[0022] The flexible circuit board provided in the embodiment of the present application can clearly identify the position of the anti-foolproof portion on the collection terminal by constructing the anti-foolproof portion as a notch structure, and then determine the assembly posture of the collection terminal according to the position of the anti-foolproof portion.

[0023] In some embodiments, the foolproof portion is configured as a protrusion disposed on the collection terminal.

[0024] The flexible circuit board provided in the embodiment of the present application is also easy to identify by constructing the fool-proof part as a convex point.

[0025] In some embodiments, the collection terminal includes a stainless steel substrate, a nickel-plated layer and a tin-plated layer, the nickel-plated layer covers the surface of the stainless steel substrate, and the tin-plated layer is arranged on the nickel-plated layer at the first end facing the circuit board body.

[0026] The flexible circuit board provided in the embodiment of the present application adopts a stainless steel substrate, so that the entire collection terminal has ferromagnetism, and the stainless steel material is inexpensive, which is conducive to reducing manufacturing costs. A nickel-plated layer is provided on the surface of the stainless steel substrate to improve the conductivity and corrosion resistance of the collection terminal. A tin-plated layer is provided on the nickel-plated layer to form a tin material on the first end of the collection terminal to facilitate subsequent soldering connection.

[0027] In a second aspect, the present application further provides a battery device, comprising a battery and a flexible circuit board as in any of the above embodiments, wherein the flexible circuit board is electrically connected to the battery.

[0028] In a third aspect, the present application also provides an electrical device, including the battery device in the above embodiment.

[0029] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0031] Figure 1 This is a schematic diagram of the structure of a flexible circuit board in some embodiments of the present application;

[0032] Figure 2 This is a schematic diagram of the structure of the acquisition terminal in some embodiments of the present application;

[0033] Figure 3 A schematic diagram of the disassembled structure of a flexible circuit board and a welding tooling according to some embodiments of the present application;

[0034] Figure 4 This is a schematic diagram of the matching structure of a flexible circuit board and a welding tool according to some embodiments of the present application.

[0035] The reference numerals in the specific implementation manner are as follows:

[0036] 1. Flexible circuit board; 11. Circuit board body; 111. Solder pad; 12. Collection terminal; 121. First end; 1211. Solder hole; 122. Second end; 123. Anti-fouling part;

[0037] 2. Welding tool; 21. Tool plate; 211. First profiling groove; 212. Second profiling groove; 22. Magnet. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0043] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0044] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0045] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0046] At present, from the perspective of market development, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application areas, its market demand is also constantly expanding.

[0047] The battery mentioned in the embodiments of the present application refers to a single physical module including multiple battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0048] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0049] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0050] In the embodiment of the present application, the battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0051] The battery cells can be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc., which are not limited in the embodiments of the present application.

[0052] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no particular limitation in the present application.

[0053] The battery device proposed in the embodiment of the present application includes the above-mentioned battery. In the battery device, the collection of signals such as voltage and temperature of the battery plays a key role in the normal operation of the battery device. In the related art, the voltage and temperature signals of the battery are collected through a flexible circuit board. The flexible circuit board includes a circuit board body and a plurality of collection terminals, and the collection terminals are connected to the circuit board body.

[0054] When assembling the acquisition terminal and the main body of the electronic board, they need to be positioned separately and then connected together using welding or bonding processes. The accuracy of the relative position between the two and the maintenance of the position during the welding process have an important impact on the assembly accuracy, and also directly affect the subsequent signal acquisition accuracy of the flexible circuit board for the battery.

[0055] In traditional flexible circuit boards, when the acquisition terminals are connected to the circuit board body, the acquisition terminals are prone to displacement, resulting in inaccurate positioning of the acquisition terminals on the circuit board body. The acquisition terminals have a front side and a back side, and the front side should be connected to the circuit board body, but it is not easy to distinguish between the front and back sides, and confusion of the connection surface often occurs.

[0056] In order to solve the above problems, a flexible circuit board is proposed in an embodiment of the present application, including a circuit board main body and a collection terminal. The side of the collection terminal facing the circuit board main body is constructed of tin material, and the tin material can be directly melted by high-temperature reflow soldering to achieve welding. There is no need to set other materials such as glue, solder, etc. between the collection terminal and the circuit board main body, which has a good retention effect on the positioning between the collection terminal and the circuit board main body. Secondly, an anti-foolproof part is set on the collection terminal, and the assembly posture of the collection terminal on the circuit board main body is identified by the anti-foolproof part to prevent the collection terminal from being placed upside down. Furthermore, a ferromagnetic material is constructed on the collection terminal, and the collection terminal can be adsorbed on the positioning tooling by magnetic attraction to prevent the collection terminal from moving at will. Through the above structural design of the collection terminal, the accuracy of the positioning of the collection terminal is improved, which is conducive to improving the assembly accuracy of the collection terminal and the circuit board main body, thereby improving the accuracy of the flexible circuit board in collecting battery signals.

[0057] The flexible circuit board provided in the embodiment of the present application can be used in, but is not limited to, a battery device for an electrical device.

[0058] The present application also provides a battery device having a flexible circuit board disclosed in the present application. The battery device provided in the present application can be used in, but not limited to, electrical equipment such as vehicles, ships, or aircraft. The vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle.

[0059] The embodiment of the present application also provides an electric device using a battery device as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0060] See also Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of a flexible circuit board 1 provided in some embodiments of the present application is shown; Figure 2A schematic diagram of the structure of the collection terminal 12 provided in some embodiments of the present application is shown. The present application provides a flexible circuit board 1, which includes a circuit board body 11 and a collection terminal 12. The first end 121 of the collection terminal 12 is connected to the circuit board body 11, and the side of the first end 121 facing the circuit board body 11 is constructed of tin material, and the second end 122 of the collection terminal 12 extends out of the circuit board body 11. Among them, at least a part of the area of ​​the collection terminal 12 is constructed of ferromagnetic material; the collection terminal 12 is provided with an anti-fool portion 123, and the anti-fool portion 123 is configured to identify the assembly posture of the collection terminal 12 on the circuit board body 11. Specifically, the circuit board body 11 is the main structure of the flexible circuit board 1, and various circuit structures are provided on the circuit board body 11. The collection terminal 12 is used to be electrically connected to the battery cell to collect electrical data of the battery cell.

[0061] The flexible circuit board 1 provided in the embodiment of the present application, by constructing the side of the collection terminal 12 facing the circuit board body 11 as tin material, when the collection terminal 12 is connected to the circuit board body 11, the tin material can be directly melted by high-temperature reflow soldering to achieve welding, without setting other materials such as glue, solder, etc. between the collection terminal 12 and the circuit board body 11, and having a good retention effect on the positioning between the collection terminal 12 and the circuit board body 11. Secondly, by setting an anti-fool part 123 on the collection terminal 12, the assembly posture of the collection terminal 12 on the circuit board body 11 is identified by the anti-fool part 123 to prevent the collection terminal 12 from being placed upside down. Furthermore, by constructing at least part of the area of ​​the collection terminal 12 as a ferromagnetic material, the collection terminal 12 can be adsorbed and fixed by magnetic attraction to prevent the collection terminal 12 from moving at will. Through the above structural design of the collection terminal 12, the positioning accuracy of the collection terminal 12 is improved, which is conducive to improving the assembly accuracy of the collection terminal 12 and the circuit board body 11, thereby improving the accuracy of the flexible circuit board 1 for battery signal collection.

[0062] In some embodiments, a plurality of collection terminals 12 are provided on each circuit board body 11, and the plurality of collection terminals 12 are arranged at intervals on the circuit board body 11. Optionally, a plurality of collection terminals 12 are provided on both sides of the length direction of the circuit board body 11, and the collection terminals 12 on both sides are arranged in a staggered manner. The structures of the plurality of collection terminals 12 and the connection methods with the circuit board body 11 are the same, and one collection terminal 12 is taken as an example for description in the embodiment of the present application.

[0063] In some embodiments, the collection terminal 12 has multiple corners, and at least one of the corners is provided with an anti-mistake portion 123. By providing the anti-mistake portion 123 at the corner of the collection terminal 12, the assembly angle of the collection terminal 12 on the circuit board body 11 is identified, and the front and back sides of the collection terminal 12 are distinguished at the same time, so as to prevent the collection terminal 12 from being placed upside down and using the wrong connection surface.

[0064] Exemplarily, the foolproof portion 123 is configured as a notch on the collection terminal 12, and the notch can be formed by chamfering the corner. By configuring the foolproof portion 123 as a notch structure, the position of the foolproof portion 123 on the collection terminal 12 can be clearly identified, and then the assembly posture of the collection terminal 12 can be determined according to the position of the foolproof portion 123.

[0065] Optionally, the corners of the collection terminal 12 are generally provided with rounded corners. In order to make the feature of the foolproof portion 123 more obvious, the corners may be chamfered so that the corners with the notch can be clearly distinguished from other corners.

[0066] In some other embodiments, the foolproof part 123 can also be constructed as a convex point set on the collection terminal 12, and the convex point structure is also easy to identify. The convex point can be set to a circle, a triangle or any other shape, which can be easily identified to achieve the foolproof effect.

[0067] For example, Figure 2 As shown, the collection terminal 12 is set to be a rectangle with four corners, and the two ends in the length direction are respectively a first end 121 and a second end 122 , and the foolproof portion 123 can be set at any corner of the first end 121 or the second end 122 .

[0068] Optionally, a welding hole 1211 is provided on the first end 121, and the welding hole 1211 extends along the width direction of the collection terminal 12. The welding hole 1211 is provided to facilitate high-temperature soldering reflow; at the same time, the welding hole 1211 can be used to identify the first end 121 and the second end 122 to prevent the second end 122 from being connected to the circuit board body 11.

[0069] In one embodiment, if Figure 2 As shown, the foolproof portion 123 is provided at the second end 122 of the collection terminal 12. The foolproof portion 123 provided at the second end 122 can quickly identify the second end 122 of the collection terminal 12, and the first end 121 is placed toward the circuit board body 11. The foolproof portion 123 is provided at the second end 122 to prevent the foolproof portion 123 from affecting the connection between the collection terminal 12 and the circuit board body 11.

[0070] In one embodiment, the second end 122 of the collection terminal 12 has two corners, at least one of which is provided with an anti-foolproofing portion 123. By providing the anti-foolproofing portion 123 at the corner of the second end, the connection surface of the collection terminal 12 can be directed toward the circuit board body 11 by limiting the position of the anti-foolproofing portion 123 and the circuit board body 11.

[0071] For example, Figure 2As shown, a foolproof portion 123 is provided at a corner of the second end 122. By providing the foolproof portion 123 at a corner of the second end 122, the two corners of the second end 122 can be quickly identified, and then the front and back sides of the collection terminal 12 can be identified by limiting the relative positions of the two corners.

[0072] Optionally, when both corners of the second end 122 are provided with fool-proofing portions 123 , the structures of the two fool-proofing portions 123 are different so that the two corners can be correctly identified.

[0073] Optionally, when the multiple corners of the collection terminal 12 are provided with foolproofing parts 123 , the foolproofing part 123 of at least one corner is different from the other foolproofing parts 123 to ensure that the foolproofing part 123 plays a good foolproofing function.

[0074] In some embodiments, the second end 122 of the collection terminal 12 is constructed of a ferromagnetic material, so that the entire collection terminal 12 is fixed by magnetically positioning the second end 122 of the collection terminal 12. Of course, the first end 121 and the second end 122 of the collection terminal 12 can also be constructed of ferromagnetic materials, and the entire collection terminal 12 can be magnetically attracted, so that the collection terminal 12 can achieve a better magnetic attraction and fixing effect.

[0075] Specifically, the collection terminal 12 includes a stainless steel substrate, a nickel-plated layer and a tin-plated layer, wherein the nickel-plated layer covers the surface of the stainless steel substrate, and the tin-plated layer is arranged on the nickel-plated layer of the first end 121 facing the circuit board body 11. By adopting the stainless steel substrate, the collection terminal 12 as a whole has ferromagnetism, and the stainless steel material is cheap, which is conducive to reducing the manufacturing cost. By arranging the nickel-plated layer on the surface of the stainless steel substrate, the conductivity and corrosion resistance of the collection terminal 12 are improved. By arranging the tin-plated layer on the nickel-plated layer, a tin material is formed on the first end 121 of the collection terminal 12 to facilitate the subsequent soldering connection.

[0076] For example, the stainless steel substrate may be martensitic stainless steel or ferritic stainless steel. During the manufacturing process, martensitic stainless steel is heat treated to change its internal structure, thereby becoming magnetically conductive and thus being attracted by a magnet. Ferritic stainless steel is magnetic because it contains iron in its chemical composition.

[0077] When processing the above-mentioned collection terminal 12, the stainless steel substrate is first processed by cutting and stamping, and the aforementioned welding hole 1211 and foolproof portion 123 and other features can be processed during the processing of the stainless steel substrate. Then, the entire surface of the stainless steel substrate is nickel plated to form a nickel-plated layer. Finally, the first end 121 of the nickel-plated layer is tin-plated on one side to form a tin-plated layer.

[0078] In some embodiments, reference Figure 3A soldering pad 111 is provided on the circuit board body 11 , and the first end 121 of the collection terminal 12 is connected to the soldering pad 111 .

[0079] See also Figure 3 and Figure 4 , Figure 3 A schematic diagram of the disassembled structure of a flexible circuit board 1 and a welding tool 2 in some embodiments of the present application is shown; Figure 4 A schematic diagram of the matching structure of the flexible circuit board 1 and the welding tool 2 in some embodiments of the present application is shown.

[0080] In order to assemble the above-mentioned flexible circuit board 1, the embodiment of the present application further provides a welding fixture 2, which includes a fixture plate 21, on which a first profiling groove 211 and a second profiling groove 212 are provided, and the first profiling groove 211 and the second profiling groove 212 are connected to limit the flexible circuit board 1 to be assembled. Among them, the shape of the first profiling groove 211 matches the shape of the circuit board body 11, so as to limit the circuit board body 11 and restrict the circuit board body 11 from moving randomly. The shape of the second profiling groove 212 matches the shape of the collection terminal 12, so as to limit the collection terminal 12 and limit the collection terminal 12 to a position overlapping with the circuit board body 11. During high-temperature soldering, the flexible circuit board 1 is placed together with the welding fixture 2 in a high-temperature reflow soldering furnace, so that the flexible circuit board 1 is reflow soldered under the positioning of the welding fixture 2, thereby ensuring the soldering accuracy.

[0081] It should be noted that Figure 3 and Figure 4 Only one of the second profiling grooves 212 is shown. In actual working conditions, the number of the second profiling grooves 212 is not less than the number of the collection terminals 12, so that the collection terminals 12 are placed in the corresponding second profiling grooves 212 for limiting, and the soldering connection of multiple collection terminals 12 of the flexible circuit board 1 can be completed at one time.

[0082] In some embodiments, a magnet 22 is disposed at the bottom of the second contoured groove 212 , and the second end 122 of the collection terminal 12 is adsorbed by the magnet 22 , so that the collection terminal 12 is placed more stably in the second contoured groove 212 .

[0083] Exemplarily, two magnets 22 are arranged at intervals, and the two magnets 22 jointly adsorb the collection terminal 12 to further improve the adsorption effect.

[0084] The flexible circuit board 1 provided in the embodiment of the present application includes a circuit board body 11 and a collection terminal 12. The first end 121 of the collection terminal 12 is connected to the circuit board body 11, and the side of the first end 121 facing the circuit board body 11 is made of tin. The second end 122 of the collection terminal 12 extends out of the circuit board body 11. The interior of the collection terminal 12 adopts a stainless steel substrate, which is ferromagnetic as a whole. When placed in the second profiling groove 212 on the welding tool 2, the magnet 22 magnetically attracts the collection terminal 12 to fix the collection terminal 12. The second end 122 of the collection terminal 12 is provided with an anti-fool portion 123, which is constructed as a notch at the corner of the second end 122, and is used to identify the front and back sides of the collection terminal 12 to confirm the assembly posture on the circuit board body 11.

[0085] An embodiment of the present application further provides a battery device, comprising a battery and a flexible circuit board 1 as in any of the above embodiments, wherein the flexible circuit board 1 is electrically connected to the battery.

[0086] An embodiment of the present application further provides an electrical device, comprising the battery device in the above embodiment.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A flexible circuit board (1), characterized in that: The flexible circuit board (1) comprises: Circuit board body (11); A collection terminal (12), wherein a first end (121) of the collection terminal (12) is connected to the circuit board body (11), a side surface of the first end (121) facing the circuit board body (11) is made of tin, and a second end (122) of the collection terminal (12) protrudes from the circuit board body (11); Wherein, at least a part of the area of ​​the collection terminal (12) is constructed of ferromagnetic material; the collection terminal (12) is provided with an anti-mistake portion (123), and the anti-mistake portion (123) is configured to identify the assembly posture of the collection terminal (12) on the circuit board body (11).

2. The flexible circuit board (1) according to claim 1, characterized in that: The collecting terminal (12) has a plurality of corners, and the fool-proof portion (123) is provided at least at one of the corners.

3. The flexible circuit board (1) according to claim 2, characterized in that: When the plurality of corners of the collecting terminal (12) are provided with the fool-proofing parts (123), the fool-proofing part (123) of at least one of the corners is different from the other fool-proofing parts (123).

4. The flexible circuit board (1) according to claim 1, characterized in that: The foolproof portion (123) is arranged at the second end (122) of the collection terminal (12).

5. The flexible circuit board (1) according to claim 4, characterized in that: The second end (122) of the collection terminal (12) has two corners, at least one of which is provided with the fool-proof portion (123).

6. The flexible circuit board (1) according to claim 5, characterized in that: When the two corners of the second end (122) are both provided with the fool-proofing parts (123), the structures of the two fool-proofing parts (123) are different.

7. The flexible circuit board (1) according to any one of claims 1 to 6, characterized in that: The foolproof portion (123) is configured as a notch on the collection terminal (12).

8. The flexible circuit board (1) according to any one of claims 1 to 6, characterized in that: The foolproof portion (123) is constructed as a protrusion arranged on the collection terminal (12).

9. The flexible circuit board (1) according to any one of claims 1 to 6, characterized in that: The collection terminal (12) comprises a stainless steel substrate, a nickel-plated layer and a tin-plated layer, the nickel-plated layer covers the surface of the stainless steel substrate, and the tin-plated layer is arranged on the nickel-plated layer at the first end (121) facing the circuit board body (11).

10. A battery device, characterized in that: It comprises a battery and a flexible circuit board (1) as claimed in any one of claims 1 to 9, wherein the flexible circuit board (1) is electrically connected to the battery.

11. An electrical device, characterized in that: Comprising the battery device as claimed in claim 10.

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