Flexible circuit board, signal acquisition assembly and battery module

Abstract

The utility model discloses a flexible circuit board, a signal acquisition assembly and a battery module, and the flexible circuit board comprises a first connection end which is provided with a first connection part and a second connection part which are connected with each other, the first connection part is provided with a first electric connection point, the second connection part is provided with a second electric connection point, and the first connection end has a first form and a second form; in the first form, the first connecting part and the second connecting part are arranged in the same plane side by side, a bending gap is formed between the first connecting part and the second connecting part, and the first electric connecting point and the second electric connecting point are located in the same plane; and in the second form, the first connecting part and the second connecting part are oppositely bent, and the first electric connecting point and the second electric connecting point are oppositely arranged. According to the utility model, a signal connecting end can be formed, so that a spliced signal acquisition assembly is realized, the processing difficulty of the FPC is reduced, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of circuit board, especially relates to a flexible circuit board, signal acquisition assembly and battery module. BACKGROUND

[0002] The battery module of new energy automobile usually adopts FPC (Flexible Printed Circuit, flexible circuit board) as signal acquisition assembly, but along with the development of technology, the distribution span of signal acquisition point on the battery module is bigger and bigger, leading to the length of FPC is longer and longer, and the super long FPC is higher in the requirement of processing technology and processing equipment, which is not conducive to reducing cost. SUMMARY

[0003] The utility model discloses at least solve one of the technical problems in the prior art. To this end, the utility model provides a flexible circuit board, signal acquisition assembly and battery module can form signal connection end, realize splicing type signal acquisition assembly, reduce the processing difficulty of FPC, and be favorable to reducing cost.

[0004] In one aspect, the utility model embodiment provides a flexible circuit board, comprising:

[0005] The first connecting end is provided with the first connecting part and the second connecting part that are connected to each other, the first connecting part is provided with the first electric connection point, the second connecting part is provided with the second electric connection point, and the first connecting end has a first mode and a second mode;

[0006] In the first mode, the first connecting part and the second connecting part are side by side in the same plane, and a bending gap is arranged between the first connecting part and the second connecting part, and the first electric connection point and the second electric connection point are located in the same plane;

[0007] In the second mode, the first connecting part and the second connecting part are bent relative to each other, and the first electric connection point and the second electric connection point are arranged relative to each other.

[0008] According to some embodiments of the utility model, in the second mode, the opposite surfaces of the first connecting part and the second connecting part are provided with a pad, and a preset gap is formed between the first electric connection point and the second electric connection point.

[0009] According to some embodiments of the utility model, the flexible circuit board further comprises a first connector, and the first connecting part and the second connecting part in the second mode are inserted in the first connector.

[0010] According to some embodiments of the present application, the first connector is provided with a first fixing hole, the first connecting part and the second connecting part are both provided with a second fixing hole, and the second fixing hole is adapted to the first fixing hole.

[0011] According to some embodiments of the present application, the first connector further comprises a fixing plug, and the fixing plug is arranged in the first fixing hole and the second fixing hole.

[0012] According to some embodiments of the present application, the first connecting part and the second connecting part are provided with a clamping groove, and the middle part of the first connector is provided with a clamping part, and the clamping groove is adapted to the clamping part.

[0013] In the second aspect, the present application provides a flexible circuit board, which is adapted to connect the flexible circuit board, and comprises:

[0014] The second connecting end has oppositely arranged first and second surfaces, the first surface is provided with a third electric connection point, the second surface is provided with a fourth electric connection point, the third electric connection point is adapted to be connected with the first electric connection point, and the fourth electric connection point is adapted to be connected with the second electric connection point.

[0015] According to some embodiments of the present application, the flexible circuit board further comprises a second connector, and the second connecting end is arranged in the second connector.

[0016] In the third aspect, the present application provides a flexible circuit board, which is adapted to connect the flexible circuit board of the first aspect, and comprises: a second connecting end, a second connector is welded to the second connecting end, a signal probe is arranged in the second connector, the second connector is connected with the first connector, and the signal probe is connected with the first electric connection point and the second electric connection point respectively.

[0017] In the third aspect, the present application provides a signal acquisition assembly, which comprises the flexible circuit board of the first aspect and the flexible circuit board of the second aspect or the third aspect.

[0018] In the fourth aspect, the present application provides a battery module, which comprises the signal acquisition assembly.

[0019] The embodiments of the present application have at least the following beneficial effects:

[0020] The first connecting end of the flexible circuit board is provided with the first connecting part and the second connecting part, the first connecting part and the second connecting part can be bent to arrange the first electric connection point and the second electric connection point oppositely, thereby serving as a signal connecting end, a spliced signal acquisition assembly can be realized, the FPC is prevented from being too long, the processing difficulty of the FPC is reduced, and the cost is reduced.

[0021] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings.

[0023] Figure 1 FIG. 1 is a structural schematic diagram of a first flexible circuit board according to an embodiment of the present application;

[0024] Figure 2 FIG. 2 is a structural schematic diagram of a second flexible circuit board according to an embodiment of the present application;

[0025] Figure 3 FIG. 3 is another structural schematic diagram of the first flexible circuit board according to an embodiment of the present application;

[0026] Figure 4 FIG. 4 is another structural schematic diagram of the second flexible circuit board according to an embodiment of the present application.

[0027] REFERENCE NUMERALS

[0028] First flexible circuit board 100, first connecting end 110, first connecting part 111, second connecting part 112, first electric connecting point 113, second electric connecting point 114, bending gap 115, second fixing hole 116, clamping groove 117, first connector 120, first fixing hole 121, second flexible circuit board 200, second connecting end 210, third electric connecting point 211, second connector 220. DETAILED DESCRIPTION

[0029] Embodiments of the present application will be described in detail below with reference to the drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0030] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0031] In the description of the utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, greater than, less than, more than, etc. are understood as not including the number, "above", "below", "within", etc. are understood as including the number. If there is a description of "first", "second", etc. is only used to distinguish technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0032] In the description of the utility model, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, and the skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0033] The embodiment discloses a battery module including a signal acquisition assembly, please refer to Figure 1 And Figure 2 The signal acquisition assembly includes a first flexible circuit board 100 and a second flexible circuit board 200, and the second flexible circuit board 200 is suitable for being connected with the first flexible circuit board 100 to realize a spliced signal acquisition assembly.

[0034] Please refer to Figure 1 The first flexible circuit board 100 includes a first connecting end 110, the first connecting end 110 is provided with a first connecting part 111 and a second connecting part 112 connected with each other, the first connecting part 111 is provided with a first electrical connection point 113, and the second connecting part 112 is provided with a second electrical connection point 114, wherein the first electrical connection point 113 and the second electrical connection point 114 can be a gold finger or a pad. The first connecting end 110 has a first mode and a second mode; please refer to Figure 1 In the first mode, the first connecting part 111 and the second connecting part 112 are side by side in the same plane, and a bending gap 115 is arranged between the first connecting part 111 and the second connecting part 112. It should be noted that, in the top projection plane, the first connecting part 111, the second connecting part 112 and the bending gap 115 are located in the same plane, and the first electrical connection point 113 and the second electrical connection point 114 are located in the same plane; in the second mode, the first connecting part 111 and the second connecting part 112 are bent (the bending direction is shown as an arc-shaped arrow in Figure 1 The first electrical connection point 113 and the second electrical connection point 114 are arranged opposite to each other.

[0035] Please refer to Figure 2The second flexible circuit board 200 comprises a second connecting end 210, the second connecting end 210 has oppositely arranged first and second surfaces (such as front and back surfaces), the first surface is provided with a third electric connecting point 211, and the second surface is provided with a fourth electric connecting point, the third electric connecting point 211 is adaptively connected with the first electric connecting point 113, and the fourth electric connecting point is adaptively connected with the second electric connecting point 114.

[0036] The first connecting end 110 of the first flexible circuit board 100 is provided with a first connecting part 111 and a second connecting part 112, the first connecting part 111 and the second connecting part 112 can be bent to oppositely arrange the first electric connecting point 113 and the second electric connecting point 114, thereby serving as a signal connecting end, a spliced signal acquisition assembly can be realized, the FPC is prevented from being too long, the processing difficulty of the FPC is reduced, and the cost is reduced.

[0037] It should be noted that in the signal acquisition application scenario of the battery module, the first flexible circuit board 100 and the second flexible circuit board 200 are usually in a strip shape to meet the position distribution requirements of the signal acquisition points on the battery module. The first flexible circuit board 100 and the second flexible circuit board 200 are spliced through the first connecting end 110 and the second connecting end 210, thereby forming an ultra-long flexible circuit board to meet the length distribution requirements of the signal acquisition points on the battery module. The first flexible circuit board 100 and the second flexible circuit board 200 transmit signals through the electric connecting points, for example, the third connecting point and the first electric connecting point 113 realize signal transmission, and similarly, the fourth electric connecting point and the second electric connecting point 114 realize signal transmission.

[0038] Taking the golden finger as an application example of the first electric connecting point 113 and the second electric connecting point 114, since the first connecting end 110 has a large number of signal transmission nodes, that is, a large number of golden fingers, if all the golden fingers are arranged on the same surface, the process requirements cannot be met; if the golden fingers are arranged in a conventional double-sided panel manner, that is, the golden fingers are distributed on the front and back surfaces of the first connecting end 110, the butt joint of the first connecting end 110 and the second connecting end 210 cannot be realized. By arranging a bending gap 115 between the first connecting part 111 and the second connecting part 112, the second connecting part 112 and the first connecting part 111 can be bent relative to each other, thereby realizing the relative arrangement of the golden fingers, and then connecting with the third electric connecting point 211 and the fourth electric connecting point of the second connecting end 210, so that the splicing of the first flexible circuit board 100 and the second flexible circuit board 200 can be realized. In some application examples, the first connecting part 111 and the second connecting part 112 can be fixed to the second connecting end 210 by coating adhesive; or in other application examples, the first connecting part 111 and the second connecting part 112 can be fixed to the second connecting end 210 by winding adhesive tape after butt joint.

[0039] In some application examples, in the second configuration, the opposite surfaces of the first connecting portion 111 and the second connecting portion 112 are provided with pads, and a preset gap is formed between the first electrical connecting point 113 and the second electrical connecting point 114, so as to facilitate the insertion of the second connecting end 210 into the preset gap, thereby achieving the contact connection between the first connecting portion 111 and the first surface of the second connecting end 210, and the contact connection between the second connecting portion 112 and the second surface of the second connecting end 210, and further achieving the connection between the first electrical connecting point 113 and the third electrical connecting point 211, and the connection between the second electrical connecting point 114 and the fourth electrical connecting point. The pads can be made of foam, which is attached to the first connecting portion and the second connecting portion.

[0040] Please refer to Figure 1 and Figure 3 , the flexible circuit board further comprises a first connector 120, and the first connecting portion 111 and the second connecting portion 112 in the second configuration are inserted into the first connector 120. For example, the first connector 120 is a glue shell, which functions similarly to a plastic shell for connecting a flat cable, and the first connector 120 can be inserted into the second connector 220 described below, thereby achieving the insertion of the first connecting end 110 and the second connecting end 210. Among them, the back surface of the first connecting portion 111 and the second connecting portion 112 (i.e. the opposite surface of the surface where the first electrical connecting point 113 and the second electrical connecting point 114 are located) is provided with a reinforcing plate to enhance the mechanical strength of the first connecting portion 111 and the second connecting portion 112.

[0041] Correspondingly, please refer to Figure 4 , the flexible circuit board further comprises a second connector 220, and the second connecting end 210 is inserted into the second connector 220. The second connector 220 provides a rigid shell with a certain mechanical strength for the second connecting end 210, and through the insertion of the second connector 220 and the first connector 120, the second connecting end 210 and the first connecting end 110 can be connected, thereby achieving the connection between the first electrical connecting point 113 and the third electrical connecting point 211, and the connection between the second electrical connecting point 114 and the fourth electrical connecting point.

[0042] Please refer to Figure 1 and Figure 2The first connector 120 is provided with a first fixing hole 121, the first connecting part 111 and the second connecting part 112 are both provided with a second fixing hole 116, and the second fixing hole 116 is adapted to the first fixing hole 121. In the case that the first connecting end 110 is inserted into the first connector 120, the position of the second fixing hole 116 is adapted to the position of the first fixing hole 121, and in some application examples, the first fixing hole 121 and the second fixing hole 116 can be filled by glue filling, so as to realize the relative fixation of the first connector 120 and the first connecting end 110. In another application example, the first connector 120 further comprises a fixing plug, and the fixing plug is arranged through the first fixing hole 121 and the second fixing hole 116. The fixing plug can adopt a structure similar to a pin or a bolt, and the fixing plug can realize the relative fixation of the first connector 120 and the first connecting end 110, so as to facilitate the subsequent plug-in of the first connector 120 and the second connector 220.

[0043] Please refer to Figure 1 The first connecting part 111 and the second connecting part 112 are provided with a clamping groove 117, and the middle part of the first connector 120 is provided with a clamping part, the clamping groove 117 is adapted to the clamping part, so as to facilitate the insertion positioning of the first connecting end 110 and the preliminary fixation of the first connecting end 110 and the first connector 120.

[0044] Please refer to Figure 4 The embodiment further provides another example of the second flexible circuit board 200, the second flexible circuit board 200 comprises a second connecting end 210, the second connecting end 210 is welded with a second connector 220, the second connector 220 is provided with a signal probe, the second connector 220 is connected with the first connector 120, and the signal probe is connected with the first electric connecting point 113 and the second electric connecting point 114 respectively. The second connector 220 is similar to a conventional socket element, and can be directly welded on the second flexible circuit board 200, so as to realize the signal switching.

[0045] The above embodiment of the utility model is described in detail in combination with the drawings, but the utility model is not limited to the above embodiment, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. A flexible circuit board, characterized in that: include: A first connection end (110) is provided with a first connection portion (111) and a second connection portion (112) connected to each other, the first connection portion (111) is provided with a first electrical connection point (113), the second connection portion (112) is provided with a second electrical connection point (114), and the first connection end (110) has a first shape and a second shape; In the first form, the first connecting portion (111) and the second connecting portion (112) are arranged side by side in the same plane, a bending gap (115) is provided between the first connecting portion (111) and the second connecting portion (112), and the first electrical connection point (113) and the second electrical connection point (114) are located in the same plane; In the second form, the first connecting portion (111) and the second connecting portion (112) are bent relative to each other, and the first electrical connection point (113) and the second electrical connection point (114) are arranged relative to each other.

2. The flexible circuit board according to claim 1, wherein: In the second form, a pad is provided on the opposing surfaces of the first connecting portion (111) and the second connecting portion (112), and a preset gap is formed between the first electrical connection point (113) and the second electrical connection point (114).

3. The flexible circuit board according to claim 1 or 2, characterized in that: The flexible circuit board further comprises a first connector (120), and the first connecting portion (111) and the second connecting portion (112) in the second form are inserted into the first connector (120).

4. The flexible circuit board according to claim 3, characterized in that: The first connector (120) is provided with a first fixing hole (121), the first connecting portion (111) and the second connecting portion (112) are both provided with a second fixing hole (116), the second fixing hole (116) is adapted to the first fixing hole (121), and the first fixing hole (121) and the second fixing hole (116) are provided with fixing plug-ins.

5. The flexible circuit board according to claim 4, characterized in that: A snap-fitting groove (117) is provided on the first connecting portion (111) and the second connecting portion (112); a snap-fitting portion is provided in the middle of the first connector (120); and the snap-fitting groove (117) is adapted to the snap-fitting portion.

6. A flexible circuit board, suitable for connecting the flexible circuit board according to any one of claims 1 to 5, characterized in that: include: The second connection end (210) has a first surface and a second surface arranged opposite to each other, the first surface is provided with a third electrical connection point (211), the second surface is provided with a fourth electrical connection point, the third electrical connection point (211) is adaptively connected to the first electrical connection point (113), and the fourth electrical connection point is adaptively connected to the second electrical connection point (114).

7. The flexible circuit board according to claim 6, wherein: The flexible circuit board further comprises a second connector (220), and the second connection end (210) is plugged into the second connector (220).

8. A flexible circuit board, suitable for connecting the flexible circuit board according to any one of claims 3 to 5, characterized in that: include: The second connection end (210) is welded with a second connector (220), a signal probe is provided in the second connector (220), the second connector (220) is connected to the first connector (120), and the signal probe is respectively connected to the first electrical connection point (113) and the second electrical connection point (114).

9. A signal acquisition component, characterized in that: The flexible circuit board comprises the flexible circuit board according to any one of claims 1 to 5 and the flexible circuit board according to any one of claims 6 to 8.

10. A battery module, characterized in that: Comprising the signal acquisition component as described in claim 9.

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