FPC, CCS assembly, battery module and vehicle

Abstract

The utility model discloses an FPC, CCS subassembly, battery module and vehicle, said FPC includes FPC body and FPC branch, said FPC branch includes and at least one connecting portion, one end of said connecting arm is conductively connected with said FPC body, the other end of said connecting arm overhangs and is equipped with NTC fixed portion, said connecting arm is bent to form at least one bending portion, and said bending portion is equipped with the NTC fixed portion. The orthographic projection of the connecting part in the thickness direction of the FPC body covers the FPC body, and at least one bending part is connected with at least one connecting part. According to the FPC provided by the utility model, the orthographic projection in the thickness direction of the FPC body covers the FPC body, so that the connecting part can be connected with the FPC body, and the FPC body can be used for limiting the warping problem of the bending part. Therefore, the risk of warping of the FPC branches can be reduced, and the reliability of the battery module is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery module technical field, concretely relates to a kind of FPC, CCS assembly, battery module and vehicle. BACKGROUND

[0002] When battery module is designed, to detect the temperature state of battery cell when charging, discharging, negative temperature coefficient thermistor (Negative Temperature Coefficient, NTC) will be integrated on flexible printed circuit (Flexible Printed Circuit, FPC), the temperature state of battery cell is transmitted to battery control system by the internal circuit of FPC. Among them, FPC includes FPC body and FPC branch, FPC branch is cantilever structure, NTC is fixed at one end of FPC branch, the other end of FPC branch is welded with FPC body.

[0003] Generally, height difference is provided between NTC and FPC body, so that NTC is arranged close to the top surface of battery cell, which leads to height difference between two ends of FPC branch, and finally leads to the problem of easy warping of FPC branch. In the process of assembling and transporting battery module, the warping part of FPC branch is easily damaged by other components, which affects the reliability of battery module. SUMMARY

[0004] Therefore, the utility model provides a kind of FPC to reduce the risk of warping of FPC branch.

[0005] The FPC of the utility model includes FPC body and FPC branch, the FPC branch includes connecting arm and at least one connecting part, one end of the connecting arm is conductively connected with the FPC body, the other end of the connecting arm is cantilevered and provided with NTC fixing part, the connecting arm is bent to form at least one bending part, the connecting part is overlaid on the FPC body in the orthographic projection in the thickness direction of the FPC body, and at least one bending part is connected with at least one connecting part.

[0006] Optionally, at least one bending part is a first bending part, the first bending part is connected with at least one connecting part, the connecting arm includes overhanging section, and both ends of the overhanging section are conductively connected with the first bending part and the NTC fixing part respectively.

[0007] Optionally, at least one connecting part is a first connecting sheet, the FPC branch includes first connecting rib, the first bending part is connected with the first connecting sheet through the first connecting rib, and the width of at least a part of the first connecting rib is less than the width of the first bending part.

[0008] Optionally, the at least one bending portion is a second bending portion, the connecting arm comprises a first connecting segment, two ends of the first connecting segment are electrically connected with the first bending portion and the second bending portion respectively, and one end of the suspension segment is electrically connected with the second bending portion.

[0009] Optionally, the at least one connecting portion is a second connecting piece, the FPC branch comprises a second connecting rib, the second connecting piece is electrically and fixedly connected with the FPC body, one end of the connecting arm is electrically connected with the second connecting piece, the second bending portion is connected with the second connecting piece through the second connecting rib, and the width of at least a part of the second connecting rib is smaller than the width of the second bending portion.

[0010] Optionally, the FPC branch comprises an adhesive area second connecting piece, the adhesive area is arranged at the connection position of the connecting arm and the second connecting piece, the adhesive area is bonded with the FPC body, and the second connecting rib is connected with the adhesive area.

[0011] Optionally, the at least one bending portion is a third bending portion, the connecting arm further comprises a second connecting segment and a third connecting segment, two ends of the second connecting segment are electrically connected with the first bending portion and the third bending portion respectively, and two ends of the third connecting segment are electrically connected with the third bending portion and the second connecting piece respectively.

[0012] Optionally, the number of the connecting portions is at least two, and a part of the FPC body is arranged between the at least two connecting portions, so that the at least two connecting portions are connected through the FPC body.

[0013] The utility model also proposes a CCS assembly.

[0014] The CCS assembly of the utility model comprises an FPC and an NTC, the FPC is the FPC in any one of the preceding items, the NTC is arranged on one side of the NTC fixing portion in the thickness direction of the FPC body and is electrically connected with the NTC fixing portion.

[0015] The utility model also proposes a battery module.

[0016] The battery module of the utility model comprises a plurality of battery cells and a CCS assembly, the CCS assembly is the CCS assembly in any one of the preceding items, the CCS assembly is arranged on one side in the height direction of the battery cell, and the NTC is in contact with the end surface of the battery cell facing the CCS assembly.

[0017] The utility model also proposes a vehicle.

[0018] The vehicle of the utility model comprises the battery module in any one of the preceding items.

[0019] The FPC of this utility model electrically connects one end of the connecting arm of the FPC branch to the FPC body, and extends the other end of the connecting arm to a cantilevered position with an NTC fixing portion. This allows the NTC to detect the temperature of the battery cell when it is fixed to the NTC fixing portion. The detected cell temperature can be transmitted to the battery control system through the FPC branch and the FPC body. By bending the connecting arm to form at least one bend, when the battery cell expands and moves the NTC, the bend frees up excess length to accommodate the movement of the NTC, preventing the NTC from separating from the battery cell. Experimental studies have shown that the bend is the region where the FPC branch warps. By arranging the connecting portion so that its orthographic projection in the thickness direction of the FPC body overlaps the FPC body, the connecting portion can be connected to the FPC body, thereby connecting the bend to the FPC body and preventing warping of the bend from occurring. This reduces the risk of warping in the FPC branch, thereby improving the reliability of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a partial structural diagram of an FPC in use according to an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 Schematic diagram of the structure of the FPC branch.

[0022] Reference numerals:

[0023] 1. FPC body;

[0024] 2. FPC branch; 21. Connecting arm; 211. Bend; 2111. Second bend; 2112. First bend; 2113. Third bend; 212. Suspension section; 213. First connecting section; 214. Second connecting section; 215. Third connecting section; 22. Second connecting piece; 221. Welding area; 222. Adhesive area; 2221. First glue overflow hole; 23. Second connecting rib; 24. First connecting piece; 241. Second glue overflow hole; 25. First connecting rib;

[0025] 3. NTC fixing part; 31. Hot riveting hole;

[0026] 4. NTC reinforcement plate;

[0027] 5.NTC mounting bracket;

[0028] 6. Blister tray; 61. Hot riveting column. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figure 1 and Figure 2 As shown, the FPC of the present invention embodiment includes an FPC body 1 and an FPC branch 2. The FPC branch 2 includes a connecting arm 21 and at least one connecting portion. One end of the connecting arm 21 is electrically connected to the FPC body 1, and the other end of the connecting arm 21 is cantilevered and provided with an NTC fixing portion 3. The orthographic projection of the connecting portion in the thickness direction of the FPC body 1 covers the FPC body 1 and is connected to the FPC body 1. The connecting arm 21 is bent to form at least one bent portion 211, and at least one bent portion 211 is connected to at least one connecting portion.

[0031] Among them, at least one bending portion 211 is connected to at least one connecting portion, which can be understood as: the number of bending portions 211 and the number of connecting portions are both one, and the bending portion 211 is connected to the connecting portion; or, the number of bending portions 211 is multiple, the number of connecting portions is one, and at least one of the multiple bending portions 211 is connected to the connecting portion; or, the number of bending portions 211 is one, the number of connecting portions is multiple, and the bending portion 211 is connected to at least one connecting portion; or, the number of bending portions 211 and the number of connecting portions are both multiple, and each bending portion 211 is connected to the connecting portion; or, the number of bending portions 211 and the number of connecting portions are both multiple, wherein a part of the bending portions 211 are connected to the connecting portion, and another part of the bending portions 211 are not connected to the connecting portion.

[0032] In this embodiment of the FPC, one end of the connecting arm 21 of the FPC branch 2 is electrically connected to the FPC body 1, while the other end of the connecting arm 21 is cantilevered and provided with an NTC fixing portion 3. This allows the NTC to be fixed to the NTC fixing portion 3 and detect the temperature of the battery cell. The detected cell temperature can be transmitted to the battery control system via the FPC branch 2 and the FPC body 1. By bending the connecting arm 21 to form at least one bend 211, when the battery cell expands and moves the NTC, the bend 211 frees up excess length to accommodate the movement of the NTC, preventing the NTC from separating from the battery cell. Experimental studies have shown that the area where the FPC branch 2 warps is located is the bend 211. By arranging the connecting portion so that its orthographic projection in the thickness direction of the FPC body 1 covers the FPC body 1, allowing the connecting portion to connect to the FPC body 1, thereby connecting the bend 211 to the FPC body 1, the FPC body 1 can be used to prevent warping of the bend 211. In this way, the risk of warping of the FPC branch 2 can be reduced, thereby improving the reliability of the battery module.

[0033] In some embodiments, as shown in Figure 1 and Figure 2 The at least one bending portion 211 is a first bending portion 2112, and the first bending portion 2112 is connected with the at least one connecting portion. The connecting arm 21 comprises a suspended segment 212, and both ends of the suspended segment 212 are conductively connected with the first bending portion 2112 and the NTC fixing portion 3 respectively.

[0034] It can be understood that when there is a height difference between the NTC and the FPC body 1, the suspended segment 212 will be bent and deformed in the thickness direction of the FPC body 1 to ensure that the NTC contacts the battery cell, that is, the suspended segment 212 is designed to be bent and deformed in the thickness direction of the FPC body 1. However, after the suspended segment 212 is bent and deformed in the thickness direction of the FPC body 1, the suspended segment 212 will have an elastic stress, which is first transmitted to the first bending portion 2112. Since the stress concentration phenomenon is more obvious at the first bending portion 2112, the first bending portion 2112 is prone to warping.

[0035] By connecting the first bending portion 2112 with the connecting portion, the first bending portion 2112 is connected with the FPC body 1, so that the FPC body 1 can be used to limit the warping of the first bending portion 2112, further reducing the risk of warping of the FPC branch 2.

[0036] In addition, it should be noted that when the FPC body 1 limits the warping of the first bending portion 2112, the elastic stress at the suspended segment 212 cannot be eliminated by the warping of the first bending portion 2112. At this time, the suspended segment 212 can only be bent and deformed in the thickness direction of the FPC body 1 to eliminate the above-mentioned elastic stress, which is consistent with the design of the suspended segment 212 and will not affect the normal use of the FPC.

[0037] Optionally, the at least one connecting portion is a first connecting sheet 24, and the FPC branch 2 comprises a first connecting rib 25, and the first bending portion 2112 is connected with the first connecting sheet 24 through the first connecting rib 25. At least a part of the first connecting rib 25 has a width smaller than that of the first bending portion 2112.

[0038] The width of at least a part of the first connecting rib 25 is smaller than that of the first bending portion 2112, so that the strength of the first connecting rib 25 is smaller than that of the first bending portion 2112, so that when the first bending portion 2112 is subjected to tension, the first connecting rib 25 is preferentially broken, so that the first bending portion 2112 is separated from the first connecting sheet 24.

[0039] By providing the first connecting piece 24 and the first connecting rib 25, and the width of at least a portion of the first connecting rib 25 being smaller than the width of the first bent portion 2112, when the battery module is in use and the NTC moves due to thermal expansion of the battery cell, the first connecting rib 25 breaks due to tension, causing the first bent portion 2112 to separate from the first connecting piece 24. The redundant length of the first bent portion 2112 is released to accommodate the movement of the NTC, thereby avoiding fracture failure at the first bent portion 2112 and further improving the reliability of the battery module.

[0040] In some embodiments, as Figure 1 As shown, at least one of the bent portions 211 is a second bent portion 2111, which is connected to at least one connecting portion. The connecting arm 21 includes a first connecting segment 213, the ends of which are electrically connected to the first bent portion 2112 and the second bent portion 2111, respectively. One end of the suspension segment 212 is electrically connected to the second bent portion 2111.

[0041] It is understandable that the elastic stress of the suspension section 212 is transferred to the second bending portion 2111 . Since the stress concentration phenomenon at the second bending portion 2111 is more obvious, this causes the second bending portion 2111 to be prone to warping.

[0042] By connecting the second bending portion 2111 to the connecting portion, and connecting the connecting portion to the FPC body 1 , the FPC body 1 can be used to limit the warping of the second bending portion 2111 , further reducing the risk of the FPC branch 2 warping.

[0043] In addition, it should be noted that when the FPC body 1 restricts the second bending portion 2111 and the first bending portion 2112 from warping, the elastic stress at the suspension section 212 cannot be eliminated by the warping of the second bending portion 2111 and the first bending portion 2112. At this time, the suspension section 212 can only bend and deform along the thickness direction of the FPC body 1 to eliminate the above-mentioned elastic stress, which is consistent with the design of the suspension section 212 and will not affect the normal use of the FPC.

[0044] Of course, in other embodiments, only one of the first bending portion 2112 and the second bending portion 2111 may be connected to the connecting portion; the first bending portion 2112 and the second bending portion 2111 may not be connected through the first connecting section 213.

[0045] Alternatively, as Figure 1 and Figure 2As shown, at least one connecting portion is a second connecting piece 22 and the FPC branch 2 includes a second connecting rib 23. The second connecting piece 22 is conductively and fixedly connected to the FPC body 1, and one end of the connecting arm 21 is conductively connected to the second connecting piece 22. The second bent portion 2111 is connected to the second connecting piece 22 via the second connecting rib 23. The width of at least a portion of the second connecting rib 23 is smaller than the width of the second bent portion 2111.

[0046] Among them, the width of at least a part of the second connecting rib 23 is smaller than the width of the second bending portion 2111, which can be understood as: the width of the second connecting rib 23 at any place is smaller than the width of the second bending portion 2111; or, the width of a part of the second connecting rib 23 is smaller than the width of the second bending portion 2111, and the width of another part of the second connecting rib 23 is greater than or equal to the width of the second bending portion 2111.

[0047] For example, the second connecting piece 22 is provided with a welding area 221 , and the welding area 221 is welded to the FPC body 1 .

[0048] The width of at least a portion of the second connecting rib 23 is smaller than the width of the second bending portion 2111, so that the strength of the second connecting rib 23 is smaller than the strength of the second bending portion 2111, so that when the second bending portion 2111 is subjected to tension, the second connecting rib 23 breaks first, causing the second bending portion 2111 to separate from the second connecting piece 22.

[0049] By providing the second connecting piece 22 and the second connecting rib 23, and the width of at least a portion of the second connecting rib 23 being smaller than the width of the second bent portion 2111, when the battery module is in use and the NTC moves due to thermal expansion of the battery cell, the second connecting rib 23 breaks due to the tensile force, causing the second bent portion 2111 to separate from the second connecting piece 22. The redundant length is released by the second bent portion 2111 to accommodate the movement of the NTC, thereby avoiding the problem of fracture failure at the second bent portion 2111 and further improving the reliability of the battery module.

[0050] Alternatively, as Figure 2 As shown, the FPC branch 2 includes a bonding area 222, which is provided at the connection between the connecting arm 21 and the second connecting sheet 22. The bonding area 222 is bonded to the FPC body 1, and the second connecting rib 23 is connected to the bonding area 222. The bonding area 222 may be in a sheet shape.

[0051] It is understood that, regardless of the circumstances, the second connecting piece 22 must be connected to the FPC body 1 to ensure the conductive connection between the FPC branch 2 and the FPC body 1. The bonding area 222 and the FPC body 1 are only mechanically connected and will not affect the electrical connection between the FPC branch 2 and the FPC body 1.

[0052] By setting the FPC branch 2 to include a bonding area 222, and the second connecting rib 23 being connected to the bonding area 222, the elastic stress of the suspension section 212 is transmitted to the second bending portion 2111, and then transmitted to the bonding area 222 through the second connecting rib 23, thereby avoiding the elastic stress from being transmitted to the welding area 221 through the second connecting rib 23, thereby improving the electrical connection reliability between the welding area 221 and the FPC body 1, and further improving the reliability of the battery module.

[0053] Of course, in other embodiments, the FPC branch 2 may include only the second connecting piece 22 but not the bonding area 222 .

[0054] Alternatively, as Figure 2 As shown, the bonding area 222 defines a first glue overflow hole 2221 .

[0055] When specifically connecting the bonding area 222 to the FPC body 1, glue can be applied to the FPC body 1 first, and then the bonding area 222 and the FPC body 1 are bonded together. Excess glue overflows through the first glue overflow hole 2221, and the glue overflowing through the first glue overflow hole 2221 is bonded to the bonding area 222.

[0056] Alternatively, as Figure 2 As shown, the first connecting piece 24 is provided with a second glue overflow hole 241 .

[0057] When connecting the first connecting piece 24 to the FPC body 1, glue can be applied to the FPC body 1 first, and then the first connecting piece 24 and the FPC body 1 are bonded together. Excess glue overflows through the second glue overflow hole 241, and the glue overflowing through the second glue overflow hole 241 is bonded to the first connecting piece 24.

[0058] For example, when the suspension segment 212 is in a redundant overload state, i.e., when the suspension segment 212 is squeezed at both ends, it generates an inward push stress. This inward push stress is sequentially transferred through the suspension segment 212 and the second connecting rib 23 to the bonding area 222, where it is eliminated, thus preventing the connection arm 21 from warping. When the suspension segment 212 is in a taut state, i.e., when the suspension segment 212 is stretched at both ends, it generates an outward tensile stress. This outward tensile stress is transferred through the first connecting rib 25 to the connecting portion of the first connecting piece, where it is eliminated, thus preventing the connection arm 21 from warping. This effectively reduces the problem of warping and hooking damage during assembly. The warping problem caused by both inward push stress and outward tensile stress is resolved.

[0059] During the use of the power battery, the battery cell expands and moves due to heat, and the battery cell drives the NTC to move. When the direction of the battery cell expansion and movement is from the second connecting piece 22 to the second bend portion 2111, for example, when the battery cell moves to the right, under the action of the expansion force, the second connecting rib 23 breaks, so that redundant length is released through the second bend portion 2111 to accommodate the expansion and movement needs of the battery cell. When the direction of the battery cell expansion and movement is from the second bend portion 2111 to the second connecting piece 22, for example, when the battery cell moves to the left, under the action of the expansion force, the first connecting rib 25 breaks first, so that a small amount of redundant length is released through the first bend portion 2112 to accommodate the expansion and movement needs of the battery cell. When the expansion force continues to act, the second connecting rib 23 breaks, so that redundant length is released through the second bend portion 2111 to accommodate the expansion and movement needs of the battery cell. The two-way movement needs of the battery cell expansion are taken into account. Among them, the left and right directions are as follows. Figure 1 and Figure 2 shown.

[0060] In some embodiments, as Figure 1 and Figure 2 As shown, at least one of the bent portions 211 is a third bent portion 2113. The connecting arm 21 also includes a second connecting segment 214, the two ends of which are respectively conductively connected to the first bent portion 2112 and the third bent portion 2113. The FPC branch 2 also includes a third connecting segment 215, the two ends of which are respectively conductively connected to the third bent portion 2113 and the second connecting piece 22.

[0061] For example, one end of the third connecting segment 215 is conductively connected to the second connecting piece 22 , and the second connecting piece 22 is conductively connected to the FPC body 1 .

[0062] It is understandable that the stress concentration phenomenon at the first bend portion 2112 is more obvious, which makes the first bend portion 2112 prone to fracture failure when it bends and deforms. By providing a third bend portion 2113, and connecting the first bend portion 2112 to the third bend portion 2113 via the second connecting section 214, and the third bend portion 2113 to the FPC body 1 via the third connecting section 215, when the first bend portion 2112 needs to bend and deform to release redundant length, the third bend portion 2113 can also bend and deform to release redundant length. In other words, the combined bending deformation of the first bend portion 2112 and the third bend portion 2113 is utilized to adapt to the expansion and movement requirements of the battery cell, thereby avoiding the problem of fracture failure caused by large deformation of the first bend portion 2112, further improving the reliability of the battery module.

[0063] Of course, in other embodiments, the third bending portion 2113 and the third connecting section 215 may not be provided. In this case, the first bending portion 2112 is directly connected to the FPC body 1 through the second connecting section 214 .

[0064] Optionally, the second bending portion 2111 is L-shaped.

[0065] By setting the second bending portion 2111 to be L-shaped, the stress concentration phenomenon of the second bending portion 2111 can be reduced, and the risk of the second bending portion 2111 breaking and failing can be reduced.

[0066] Optionally, the first bending portion 2112 is U-shaped.

[0067] By setting the first bending portion 2112 to be U-shaped, the first bending portion 2112 can release more redundant length to better adapt to the needs of expansion and movement of the battery cell.

[0068] Optionally, the third bending portion 2113 is U-shaped.

[0069] By setting the third bending portion 2113 to be U-shaped, the third bending portion 2113 can release more redundant length to better adapt to the needs of expansion and movement of the battery cell.

[0070] Optionally, the FPC branch 2 is integrally formed.

[0071] Alternatively, as Figure 1 As shown, the number of the connecting parts is at least two, wherein a portion of the FPC body 1 is disposed between the at least two connecting parts, so that the at least two connecting parts are connected through the FPC body 1. In other words, the FPC body 1 is configured as a solid structure between the at least two connecting parts.

[0072] For example, the connecting arm 21 except the suspension section 212 is stacked with the FPC body 1 so that a portion of the FPC body 1 is disposed between the first connecting piece 24 and the second connecting piece 22 , and the first connecting piece 24 and the second connecting piece 22 are connected through this portion of the FPC body 1 .

[0073] By connecting at least two connection parts through the FPC body 1 , the structural strength of the FPC body 1 at the at least two connection parts can be increased, so that when the connection parts are subjected to tension, they are less likely to break, thereby improving the reliability of the FPC body 1 .

[0074] Of course, in other embodiments, the FPC body 1 may not be disposed between at least two connection portions. In this case, the FPC body 1 is hollowed out between at least two connection portions.

[0075] The FPC of the embodiment of the present utility model can not only meet the bidirectional movement requirements of the battery cell expansion, realize the universal design of the FPC branch 2, and reduce the cost investment in development, but also effectively improve the problem of the connection arm 21 warping caused by the internal push stress or external pull stress generated when the NTC fixing part 3 is fixed. In addition, the fixing process of the FPC branch 2 and the FPC body 1 is simple, and can realize automated operation integrated with the FPC body, greatly improving production efficiency.

[0076] like Figure 1 As shown, the CCS assembly of the embodiment of the present invention includes an FPC and an NTC. The FPC is the FPC described in any of the above embodiments. The NTC is arranged on one side of the NTC fixing part 3 in the thickness direction of the FPC body 1 and is connected to the NTC fixing part 3.

[0077] like Figure 1 and Figure 2 As shown, the NTC fixing part 3 is provided with a hot riveting hole 31, and the CCS assembly includes a blister tray 6, which is provided with a hot riveting column 61. The hot riveting column 61 is inserted into the hot riveting hole 31 and connected by a hot riveting process.

[0078] like Figure 1 As shown, the CCS assembly also includes an NTC reinforcement plate 4 and an NTC mounting bracket 5. The NTC reinforcement plate 4 and the NTC mounting bracket 5 are both provided with connection holes for inserting the heat rivet column 61. The NTC reinforcement plate 4, the NTC mounting bracket 5, and the NTC fixing part 3 are all connected to the blister tray 6 through a hot riveting process.

[0079] When manufacturing the CCS assembly of the embodiment of the present invention, the welding area 221 of the second connecting piece 22 is first welded to the FPC body 1 through a welding process to complete the circuit connection between the FPC branch 2 and the FPC body 1; then, the bonding area 222 of the second connecting piece 22 and the first connecting piece connecting portion are bonded to the FPC body 1 through a dispensing process; thereafter, the NTC fixing portion 3, the NTC reinforcement plate 4, and the NTC mounting bracket 5 are fixed to the blister tray 6 through a hot riveting process.

[0080] The battery module of the embodiment of the present invention includes multiple battery cells and a CCS assembly. The CCS assembly is the CCS assembly described in any of the above embodiments. The CCS assembly is arranged on one side in the height direction of the battery cell, and the NTC is in contact with the end face of the battery cell facing the CCS assembly.

[0081] Since the FPC in the above embodiment can reduce the risk of the FPC branch 2 warping problem, the battery module in the embodiment of the present utility model has better reliability.

[0082] The vehicle according to the embodiment of the present invention includes the battery module described in any one of the above embodiments.

[0083] Since the battery module of the embodiment of the present invention has good reliability, the vehicle of the embodiment of the present invention has good safety.

[0084] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. An FPC, characterized in that: include: FPC body; An FPC branch includes an connecting arm and at least one connecting portion, one end of the connecting arm is conductively connected to the FPC body, the other end of the connecting arm is cantilevered and provided with an NTC fixing portion, the connecting arm is bent to form at least one bent portion, the orthographic projection of the connecting portion in the thickness direction of the FPC body covers the FPC body and is connected to the FPC body, and at least one bent portion is connected to at least one connecting portion.

2. The FPC according to claim 1, wherein At least one bending portion is a first bending portion, the first bending portion is connected to at least one of the connecting portions, the connecting arm includes a suspension segment, and two ends of the suspension segment are conductively connected to the first bending portion and the NTC fixing portion respectively.

3. The FPC according to claim 2, wherein: At least one of the connecting parts is a first connecting piece, the FPC branch includes a first connecting rib, the first bending part is connected to the first connecting piece through the first connecting rib, and the width of at least a portion of the first connecting rib is smaller than the width of the first bending part.

4. The FPC according to claim 2, wherein: At least one bending portion is a second bending portion, the second bending portion is connected to the connecting portion, the connecting arm includes a first connecting segment, the two ends of the first connecting segment are conductively connected to the first bending portion and the second bending portion respectively, and one end of the suspension segment is conductively connected to the second bending portion.

5. The FPC according to claim 4, wherein: At least one of the connecting parts is a second connecting piece, the FPC branch includes a second connecting rib, the second connecting piece is conductively and fixedly connected to the FPC body, one end of the connecting arm is conductively connected to the second connecting piece, and the second bending portion is connected to the second connecting piece through the second connecting rib, and the width of at least a portion of the second connecting rib is smaller than the width of the second bending portion.

6. The FPC according to claim 5, wherein: The FPC branch includes a second connecting piece in a bonding area. The bonding area is provided at the connection between the connecting arm and the second connecting piece. The bonding area is bonded to the FPC body, and the second connecting rib is connected to the bonding area.

7. The FPC according to claim 5, wherein: At least one of the bending portions is a third bending portion, and the connecting arm further includes a second connecting segment and a third connecting segment, the two ends of the second connecting segment are respectively conductively connected to the first bending portion and the third bending portion, and the two ends of the third connecting segment are respectively conductively connected to the third bending portion and the second connecting piece.

8. The FPC according to any one of claims 1 to 7, characterized in that: The number of the connecting parts is at least two, wherein a portion of the FPC body is disposed between at least two of the connecting parts, so that the at least two connecting parts are connected through the FPC body.

9. A CCS component, characterized in that: include: FPC, wherein the FPC is the FPC according to any one of claims 1 to 8; NTC, the NTC is arranged on one side of the NTC fixing portion in the thickness direction of the FPC body and is conductively connected to the NTC fixing portion.

10. A battery module, characterized in that: include: Multiple battery cells; The CCS component is the CCS component according to claim 9, the CCS component is arranged on one side in the height direction of the battery cell, and the NTC is in contact with the end surface of the battery cell facing the CCS component.

11. A vehicle, characterized in that: A battery module comprising the battery module according to claim 10.

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