Collection device based on FPC, and battery module

Abstract

A collection device (1) based on an FPC, and a battery module. The collection device (1) based on an FPC comprises: a first FPC segment (11), a second FPC segment (12) and a third FPC segment (13), wherein the first FPC segment (11) is attached to a first surface of a battery module body (2), the second FPC segment (12) is formed by means of folding and bending relative to the first FPC segment (11), the second FPC segment (12) is attached to a second surface of the battery module main body (2), and the third FPC segment (13) is formed by means of folding and bending relative to the second FPC segment (12).

Description

FPC acquisition device and battery module

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 25, 2023, with application number 202322306839.5. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to an FPC acquisition device and a battery module. Background Art

[0003] In related technologies, most FPC boards (Flexible Printed Circuits) in battery modules are arranged on the side of the battery module body. By bending a portion of the FPC board 90° to the upper surface of the battery module body, and then bending a portion of the FPC segment on the upper surface 90° to the front surface of the battery module body, the signal collected by the FPC board can be output from the front surface of the battery module body. SUMMARY OF THE INVENTION

[0004] However, the plane shape of the FPC board mentioned in the background technology is generally similar to a "Z" shape. When making such an FPC board, a knife die is needed to cut off a large area of ​​FPC material without wiring, which will cause waste of FPC material and increase the material cost of making the FPC board.

[0005] The present application provides an FPC acquisition device. The FPC acquisition device includes:

[0006] The FPC board is in the shape of an elongated strip and includes a first FPC segment, a second FPC segment, and a third FPC segment connected in sequence along the length direction of the FPC board. The first FPC segment, the second FPC segment, and the third FPC segment are integrally formed. The first FPC segment is attached to the first surface of the battery module body. The second FPC segment is folded and bent relative to the first FPC segment to form the second FPC segment. The second FPC segment is attached to the second surface of the battery module body. The third FPC segment is folded and bent relative to the second FPC segment to form the third FPC segment. The third FPC segment is attached to the third surface of the battery module body. The first surface, the second surface, and the third surface are adjacent to each other.

[0007] A signal acquisition piece is provided at the first FPC segment;

[0008] The signal output interface is provided at the third FPC segment.

[0009] The present application also provides a battery module, which includes a battery module body and an FPC acquisition device as described in any of the above items, wherein the FPC acquisition device is used to acquire a battery status signal in the battery module body. Beneficial effects

[0010] In the present application, a long strip FPC board is used, which is divided into three FPC segments. By folding and bending the FPC segments, one of the FPC segments is adhered to other adjacent surfaces of the battery module body, so that the signal collected by the FPC board can be output from the third FPC segment adhered to the third surface of the battery module body without the need to use a "Z"-shaped FPC board. Compared with a "Z"-shaped FPC board, the long strip FPC board has less material waste, thereby reducing the material cost of making the FPC board. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic diagram of the overall structure of an FPC collection device and a battery module body provided by a possible implementation of the present application;

[0012] FIG2 is a schematic diagram of the detailed structure of area A in FIG1 ;

[0013] FIG3 is a schematic diagram of the expanded structure of the FPC board in FIG1 ;

[0014] FIG4 is a schematic diagram of the structure of the FPC board in FIG1 after folding and bending;

[0015] FIG5 is a schematic diagram of a refined structure of area B in FIG1 ;

[0016] FIG6 is a schematic plan view of a partial structure of the first FPC segment in FIG5 ;

[0017] FIG7 is a schematic diagram of the stacked structure in a cross section of a first FPC segment;

[0018] FIG8 is a schematic diagram of another detailed structure of area B in FIG1 .

[0019] Description of reference numerals:

[0020] 1. FPC acquisition device; 10. FPC board; 11. First FPC segment; 12. Second FPC segment; 13. Third FPC segment; 14. First dotted line; 15. Second dotted line; 16. Third dotted line; 17. Fourth dotted line; 18. Groove; 181. First side wall; 182. Second side wall; 183. Positioning hole; 19. "S"-shaped connector; 191. First end; 192. Second end; 193. Micro-connection section; 111. First protective film layer; 112. FPC substrate layer; 113. Covering film layer; 114. Second protective film layer; 20. Signal acquisition piece; 21. First signal acquisition segment; 22. Second signal acquisition segment; 23. Crease when the second signal acquisition segment 22 is bent relative to the first signal acquisition segment 21; 30. Signal output interface; 2. Battery module body; 3. Positioning column; 4. Bus. Modes for Carrying Out the Invention

[0021] In this application, unless otherwise specified, directional words such as "upper" and "lower" generally refer to the upper and lower parts of the device in actual use or working state, specifically the direction of the drawings in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0022] In order to reduce the material cost of manufacturing FPC boards, a possible implementation of the present application provides an FPC acquisition device and a battery module, which uses a long strip of FPC board, divides the long strip of FPC board into three FPC segments, and through folding and bending between the FPC segments, affixes one of the FPC segments to other adjacent surfaces of the battery module body. Ultimately, the signal collected by the FPC board can be output from the third FPC segment affixed to the third surface of the battery module body, without the need for a "Z"-shaped FPC board. Compared with a "Z"-shaped FPC board, the long strip of FPC board wastes less material, thereby reducing the material cost of manufacturing the FPC board, and eliminating the need for redundant cutting processes, shortening the processing cycle of the FPC board. For the specific solution, please refer to the detailed description below.

[0023] In a first aspect, a possible implementation of the present application provides an FPC acquisition device. Referring to Figures 1 and 2, Figure 1 is a schematic diagram of the overall structure of the FPC acquisition device 1 and the battery module body 2, and Figure 2 is a detailed schematic diagram of the structure of area A in Figure 1. As can be seen from Figures 1 and 2, the FPC acquisition device 1 includes a signal acquisition chip 20, an FPC board 10, and a signal output interface 30. The signal acquisition chip 20 is typically a nickel chip. The signal acquisition chip 20 is used to acquire battery status signals from the battery module body 2. The battery status signals typically record the current battery voltage, current battery temperature, and other signals. The FPC board 10 is used to transmit the battery status signals collected by the signal acquisition chip 20 to the signal output interface 30, so that the battery status signals can be output externally from the signal output interface 30. For example, the signal output interface 30 can be connected to a battery management system (BMS) external to the battery module, allowing the BMS to monitor and manage the status of the batteries in the battery module body 2. The battery module body 2 houses batteries, which are used to provide electrical energy to external devices, such as electric vehicles.

[0024] Please refer to Figures 3 and 4. Figure 3 is a schematic diagram of the unfolded structure of the FPC board 10 in Figure 1, and Figure 4 is a schematic diagram of the structure of the FPC board 10 in Figure 1 after folding and bending. As can be seen in Figure 3, the unfolded FPC board 10 is in the form of a long strip, comprising a first FPC segment 11, a second FPC segment 12, and a third FPC segment 13 connected in sequence along the length of the FPC board 10. The first FPC segment 11, the second FPC segment 12, and the third FPC segment 13 are integrally formed. This allows the long strip of FPC board 10 to be directly cut using a die, avoiding waste of FPC material. The length of the FPC board 10 is shown as running from right to left in Figure 3.

[0025] 2 and 4 , the first FPC segment 11 is attached to the first surface of the battery module body 2, the second FPC segment 12 is attached to the second surface of the battery module body 2, and the third FPC segment 13 is attached to the third surface of the battery module body 2. In this way, by setting the signal acquisition piece 20 at the first FPC segment 11 and the signal output interface 30 at the third FPC segment 13, the battery status signal can be output from the third surface of the battery module body 2. The first surface, the second surface and the third surface are adjacent surfaces to each other. In FIG2 , the first surface is exemplified as a side surface of the battery module body 2, the second surface is exemplified as the upper surface of the battery module body 2, and the third surface is exemplified as the front surface of the battery module body 2. In order to more specifically describe the FPC acquisition device in a possible implementation of the present application, a side surface, an upper surface and a front surface of the battery module body 2 shown in FIG2 are used instead of the first surface, the second surface and the third surface to describe the following content, as follows:

[0026] 3 and 4 , a second FPC segment 12 is formed by folding and bending relative to the first FPC segment 11. The second FPC segment 12 is attached to the upper surface of the battery module body 2. Folding refers to at least partially overlapping the segments after bending, i.e., a bending angle of 180°, while bending refers to not overlapping the segments after bending, but forming an angle less than 180°. In FIG3 , since the first FPC segment 11 is attached to one side of the battery module body 2, the second FPC segment 12 is first folded relative to the first FPC segment 11 along a first dashed line 14, and then bent relative to the first FPC segment 11 along a second dashed line 15, forming the relative positional relationship between the second FPC segment 12 and the first FPC segment 11 shown in FIG4 , so that the second FPC segment 12 is attached to the upper surface of the battery module body 2.

[0027] Similarly, after being folded and bent relative to the second FPC segment 12, the third FPC segment 13 is formed, and the third FPC segment 13 is attached to the front surface of the battery module body 2. Specifically, in Figure 3, after the second FPC segment 12 is attached to the upper surface of the battery module body 2, the third FPC segment 13 can be folded relative to the second FPC segment 12 along the third dashed line 16, and then the third FPC segment 13 can be bent relative to the second FPC segment 12 along the fourth dashed line 17, forming the relative positional relationship between the third FPC segment 13 and the second FPC segment 12 shown in Figure 4, so that the third FPC segment 13 is attached to the front surface of the battery module body 2.

[0028] In some possible implementations of the present application, in FIG3 , the second FPC segment 12 is tilted relative to the length direction of the FPC board 10 relative to the folding direction of the first FPC segment 11 (i.e., the normal direction of the first dotted line 14 within the plane of the FPC board 10), so that the folded second FPC segment 12 can be bent and attached to the top surface of the battery module body 2. Similarly, in FIG3 , the third FPC segment 13 is tilted relative to the length direction of the FPC board 10 relative to the folding direction of the second FPC segment 12 (i.e., the normal direction of the third dotted line 16 within the plane of the FPC board 10), so that the folded third FPC segment 13 can be bent and attached to the front surface of the battery module body 2.

[0029] In some possible implementations of the present application, in Figure 3, the folding direction of the second FPC segment 12 relative to the first FPC segment 11 is parallel to the folding direction of the third FPC segment 13 relative to the second FPC segment 12, that is, the first dotted line 14 is parallel to the third dotted line 16, so that after the second FPC segment 12 is folded and bent from the side of the battery module body 2 and attached to the upper surface of the battery module body 2, the third FPC segment 13 can also be folded and bent from the upper surface of the battery module body 2 and attached to the front surface of the battery module body 2.

[0030] In some possible implementations of the present application, in Figure 3, the angle formed by the crease of the second FPC segment 12 when folded relative to the first FPC segment 11 and the length direction of the FPC board 10 is 45°, that is, the angle formed by the first dotted line 14 and the length direction of the FPC board 10 is 45°. In this way, after the second FPC segment 12 is folded and bent from the side of the battery module body 2 and attached to the upper surface of the battery module body 2, the second FPC segment 12 is parallel or perpendicular to the edge of the upper surface of the battery module body 2 to facilitate the installation of the second FPC segment 12. Similarly, in Figure 3, the angle formed by the crease of the third FPC segment 13 when folded relative to the second FPC segment 12 and the length direction of the FPC board 10 is 45°, that is, the angle formed by the third dotted line 16 and the length direction of the FPC board 10 is 45°. In this way, after the third FPC segment 13 is folded and bent from the upper surface of the battery module body 2 and attached to the front surface of the battery module body 2, the second FPC segment 12 is parallel to or perpendicular to the edge of the front surface of the battery module body 2 to facilitate the installation of the third FPC segment 13.

[0031] In some possible implementations of the present application, in Figure 3, the crease of the second FPC segment 12 when it is bent relative to the first FPC segment 11 (i.e., the second dotted line 15) and the crease of the third FPC segment 13 when it is bent relative to the second FPC segment 12 (i.e., the fourth dotted line 17) are both perpendicular to the length direction of the FPC board 10, so as to facilitate the bonding of the second FPC segment 12 to the upper surface of the battery module body 2 and the bonding of the third FPC segment 13 to the front surface of the battery module body 2.

[0032] In some possible implementations of the present application, foam is disposed at the location where the second FPC segment 12 is folded relative to the first FPC segment 11 and at the location where the third FPC segment 13 is folded relative to the second FPC segment 12. Specifically, the foam is generally disposed between the two overlapping portions after folding to prevent the FPC from springing back after folding. For example, after the second FPC segment 12 is folded relative to the first FPC segment 11, the second FPC segment 12 at least partially overlaps the first FPC segment 11. In this case, foam can be disposed between the overlapping portion of the second FPC segment 12 and the overlapping portion of the first FPC segment 11. For another example, after the third FPC segment 13 is folded relative to the second FPC segment 12, the third FPC segment 13 at least partially overlaps the second FPC segment 12. In this case, foam can be disposed between the overlapping portion of the third FPC segment 13 and the overlapping portion of the second FPC segment 12. In one example, the length and width of the foam can both be 1 mm.

[0033] In some possible implementations of the present application, as shown in Figure 5, Figure 5 is a detailed structural diagram of area B in Figure 1. In Figure 5, one end of the signal acquisition sheet 20 is connected to the first FPC segment 11, and the other end is connected to the bus 4 on the upper surface of the battery module body 2. The battery is connected below the bus 4, so that the signal acquisition sheet 20 can collect the battery status signal. However, if the battery expands upward due to factors such as heat, the end of the signal acquisition sheet 20 connected to the bus 4 will also move upward, which can easily cause the signal acquisition sheet 20 to break and affect the collection of the battery status signal.

[0034] To this end, some possible implementations of the present application improve certain structures within the first FPC segment 11. Specifically, as shown in FIG6 , FIG6 is a schematic plan view of a portion of the structure within the first FPC segment 11 of FIG5 . In FIG6 , a groove 18 is provided on the side of the first FPC segment 11 facing the upper surface of the battery module body 2. The first FPC segment 11 includes an S-shaped connector 19, which is positioned within the groove 18 with a gap between the S-shaped connector 19 and the groove 18. The S-shaped connector 19 includes a first end 191 and a second end 192. The first end 191 is secured to the first sidewall 181 of the groove 18, and the signal collection sheet 20 is secured to the second end 192. This allows the signal collection sheet 20 to move upward a certain distance following the busbar 4 even if the battery expands upward, preventing breakage of the signal collection sheet 20. The structure shown in FIG6 can be implemented in multiple configurations, with different S-shaped connectors 19 connecting different signal collection sheets 20.

[0035] In one example, the dimensions of the "S"-shaped connector 19 are illustrated. For example, FIG6 shows the distances of the six positions C, D, E, F, G, and H, where C may be 6 mm, D may be 4 mm, E may be 10 mm, F may be 2 mm, G may be 8 mm, and H may be 7.2 mm.

[0036] In some possible implementations of the present application, the materials for the first FPC segment 11 are described. Referring to FIG. 7 , FIG. 7 is a schematic diagram of the laminated structure of the first FPC segment 11 in cross section. In FIG. 7 , the first FPC segment 11 includes a first protective film layer 111, an FPC substrate layer 112, a cover film layer 113, and a second protective film layer 114, stacked in sequence. The first protective film layer 111 is located on the side of the first FPC segment 11 closer to the battery module body 2, while the second protective film layer 114 is located on the side of the first FPC segment 11 further from the battery module body 2. One end of the signal acquisition sheet 20 is secured between the FPC substrate layer 112 and the cover film layer 113 at the second end 192, ensuring contact between the signal acquisition sheet 20 and the FPC substrate layer 112. This allows the battery status signal collected by the signal acquisition sheet 20 to be transmitted from the signal acquisition sheet 20 to the FPC substrate layer 112, facilitating transmission of the battery status signal within the FPC substrate layer 112.

[0037] Among them, the FPC substrate layer 112 can specifically include a PI (Polyimide Film) reinforcement layer, a substrate adhesive, and an FPC copper foil stacked in sequence. The PI reinforcement layer is arranged on the side of the FPC substrate layer 112 away from the covering film layer 113, and the FPC copper foil is arranged on the side of the FPC substrate layer 112 close to the covering film layer 113. The end of the signal acquisition piece 20 fixed between the FPC substrate layer 112 and the covering film layer 113 is specifically fixed between the FPC copper foil and the covering film layer 113. The fixation of this end of the signal acquisition piece 20 can be achieved by using solder paste and reflow soldering.

[0038] In one example, the thickness of the FPC substrate layer 112 can be 0.11 mm, wherein the thickness of the FPC copper foil is 35 μm, the thickness of the substrate adhesive is 25 μm, and the thickness of the PI reinforcement layer is 50 μm. The thickness of the first protective film layer 111 and the second protective film layer 114 are both 50 μm, and the thickness of the adhesive between the first protective film layer 111 and the PI reinforcement layer, the adhesive between the second protective film layer 114 and the PI reinforcement layer, and the adhesive between the cover film layer 113 and the FPC copper foil are all 25 μm. The total thickness of the resulting first FPC segment 11 is 0.3 ± 0.05 mm.

[0039] In the process of forming the first FPC segment 11, after welding one end of the signal acquisition piece 20 to the FPC substrate layer 112 and covering it with the covering film layer 113, it is necessary to laminate a second protective film layer 114 on the covering film layer 113. However, due to the structural design of the "S"-shaped connector 19, the "S"-shaped connector 19 may shake, making it impossible for the second protective film layer 114 to be accurately laminated.

[0040] To this end, some possible implementations of the present application further improve some of the structures within the first FPC segment 11. Specifically, as shown in Figure 6, the second end 192 is connected to the second sidewall 182 of the groove 18 via a micro-connection segment 193. The second sidewall 182 is disposed opposite the first sidewall 181. Under the restraining action of the micro-connection segment 193, the "S"-shaped connector 19 is prevented from shaking, allowing the second protective film layer 114 to be accurately attached, thereby increasing the yield and production efficiency of the FPC. In one example, the width of the micro-connection segment in a direction perpendicular to the upper surface of the battery module body 2 can be 1 mm, thereby achieving a micro-connection.

[0041] In some possible implementations of the present application, as shown in FIG6 , a positioning hole 183 is provided on the side of the groove 18 away from the "S"-shaped connector 19. The positioning hole 183 sequentially passes through the first protective film layer 111, the FPC substrate layer 112, the cover film layer 113, and the second protective film layer 114. The positioning hole 183 is used to allow the positioning post 3 on the battery module body to pass through. In this way, when the second protective film layer 114 is attached to the "S"-shaped connector 19, the positioning post 3 can also pass through the second protective film layer 114 through the positioning hole 183, so that the positioning post 3 can simultaneously position the first protective film layer 111, the FPC substrate layer 112, the cover film layer 113, and the second protective film layer 114, further reducing the difficulty of accurately attaching the second protective film layer 114.

[0042] In some possible implementations of the present application, as shown in FIG8 , FIG8 is another detailed structural schematic diagram of area B in FIG1 . In FIG8 , the signal acquisition sheet 20 includes a first signal acquisition segment 21 and a second signal acquisition segment 22, which are sequentially connected along the length of the signal acquisition sheet 20 and are integrally formed. The first signal acquisition segment 21 is disposed on the side of the battery module body 2 where the first FPC segment 11 is located, and the end of the first signal acquisition segment 21 away from the second signal acquisition segment 22 is fixed to the second end 192. The second signal acquisition segment 22 is formed by being bent relative to the first signal acquisition segment 21, so that the second signal acquisition segment 22 is attached to the upper surface of the battery module body 2. The end of the second signal acquisition segment 22 away from the first signal acquisition segment 21 is fixed to the bus 4 on the upper surface of the battery module body 2. In this way, the signal collection sheet 20 can collect the battery status signal from the bus bar 4 on the upper surface of the battery module body 2 and transmit it to the first FPC segment 11 on the side surface of the battery module body 2 .

[0043] In some possible implementations of the present application, the distance between the crease 23 of the second signal collection segment 22 and the second end 192 when the second signal collection segment 22 is bent relative to the first signal collection segment 21 is greater than or equal to a preset distance, thereby retaining a certain amount of space between the crease and the second end 192. In this way, when the second signal collection segment 22 is bent using a bending jig, the bending jig can utilize the space between the crease and the second end 192 to perform the bending operation, avoiding pressing on the first FPC segment 11 and affecting the acquisition of the battery status signal. The value of the preset distance is set based on the space required by the bending jig to perform the bending operation, for example, the preset distance can be 2 mm.

[0044] Second, some possible implementations of the present application provide a battery module. The battery module includes a battery module body 2 and an FPC acquisition device 1 as described in any of the above items. The battery module body 2 includes batteries, a busbar 4, and a positioning post 3. The FPC acquisition device 1 is used to collect battery status signals from the battery module body 2, thereby outputting the battery status signals on the front surface of the battery module body 2 while reducing the material cost of manufacturing the FPC board 10.

Claims

1. An FPC acquisition device (1), the FPC acquisition device (1) comprising: The FPC board (10) is in the shape of an elongated strip, and comprises a first FPC segment (11), a second FPC segment (12) and a third FPC segment (13) which are sequentially connected along the length direction of the FPC board (10); the first FPC segment (11), the second FPC segment (12) and the third FPC segment (13) are integrally formed; the first FPC segment (11) is attached to a first surface of a battery module body (2); the second FPC segment (12) is formed by folding and bending relative to the first FPC segment (11); the second FPC segment (12) is attached to a second surface of the battery module body (2); the third FPC segment (13) is attached to a third surface of the battery module body (2); the first surface, the second surface and the third surface are adjacent surfaces to each other; A signal collection sheet (20) is arranged at the first FPC segment (11); A signal output interface (30) is arranged at the third FPC segment (13).

2. The FPC acquisition device (1) according to claim 1, wherein: The folding direction of the second FPC segment (12) relative to the first FPC segment (11) is inclined to the length direction of the FPC board (10), and the folding direction of the third FPC segment (13) relative to the second FPC segment (12) is inclined to the length direction of the FPC board (10).

3. The FPC acquisition device (1) according to claim 2, wherein: The angle formed by the direction of the fold of the second FPC segment (12) when folded relative to the first FPC segment (11) and the length direction of the FPC board (10) is 45 degrees, and the angle formed by the direction of the fold of the third FPC segment (13) when folded relative to the second FPC segment (12) and the length direction of the FPC board (10) is 45 degrees.

4. The FPC acquisition device (1) according to claim 1, wherein: A groove (18) is provided on a side of the first FPC segment (11) facing the second surface. The first FPC segment (11) includes an "S"-shaped connector (19). The "S"-shaped connector (19) is arranged in the groove (18). The "S"-shaped connector (19) includes a first end (191) and a second end (192). The first end (191) is fixed to a first side wall (181) of the groove (18), and the signal collection sheet (20) is fixed to the second end (192).

5. The FPC acquisition device (1) according to claim 4, wherein: The cross section of the first FPC segment (11) comprises a first protective film layer (111), an FPC substrate layer (112), a covering film layer (113), and a second protective film layer (114) stacked in sequence, wherein the first protective film layer (111) is located on a side of the first FPC segment (11) close to the battery module body (2), and one end of the signal acquisition sheet (20) is fixed between the FPC substrate layer (112) and the covering film layer (113) at the second end (192).

6. The FPC acquisition device (1) according to claim 5, wherein: The second end portion (192) is connected to the second side wall (182) of the groove (18) via a micro-connection section (193); the second side wall (182) is arranged opposite to the first side wall (181).

7. The FPC acquisition device (1) according to claim 5, wherein: A positioning hole (183) is provided on a side of the groove (18) away from the "S"-shaped connector (19); the positioning hole (183) sequentially penetrates the first protective film layer (111), the FPC substrate layer (112), the covering film layer (113), and the second protective film layer (114); the positioning hole (183) is configured to allow a positioning column (3) on the battery module body (2) to pass through.

8. The FPC acquisition device (1) according to claim 4, wherein: The signal collection sheet (20) comprises a first signal collection segment (21) and a second signal collection segment (22); the first signal collection segment (21) and the second signal collection segment (22) are connected in sequence along the length direction of the signal collection sheet (20); the first signal collection segment (21) is arranged on the first surface, and an end of the first signal collection segment (21) away from the second signal collection segment (22) is fixed to the second end (192); the second signal collection segment (22) is formed after being bent relative to the first signal collection segment (21); the second signal collection segment (22) is attached to the second surface, and an end of the second signal collection segment (22) away from the first signal collection segment (21) is fixed to a bus bar (4) on the second surface.

9. The FPC acquisition device (1) according to claim 8, wherein: The distance between the fold (23) of the second signal collection segment (22) when bent relative to the first signal collection segment (21) and the second end (192) is greater than or equal to a preset distance.

10. A battery module, comprising a battery module body (2), and an FPC acquisition device (1) according to any one of claims 1 to 9, wherein the FPC acquisition device (1) is configured to acquire a battery status signal in the battery module body (2).

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