Battery module acquisition assembly adopting flexible flat cable

Abstract

The utility model discloses a battery module acquisition assembly adopting a flexible flat cable. The battery module acquisition assembly comprises foam, an FFC (Flexible Flat Cable) and a plurality of nickel sheets, the bottom surface and the top surface of the foam are a first bonding surface and a second bonding surface respectively, the first bonding surface is used for being bonded and fixed on the battery module, and a plurality of exhaust holes are formed in the foam; the FFC is bonded and fixed on the second bonding surface, the FFC is provided with a plurality of acquisition branches, and the free ends of the acquisition branches are connecting parts; a tin through hole is formed in the nickel sheet, the tin through hole is in a long strip shape and arranged in the width direction of the connecting part, and the nickel sheet is arranged on the collecting branch so that the tin through hole and the connecting part can be oppositely arranged and fixed through tin soldering. Compared with the prior art, the battery module acquisition assembly has the advantages that the FFC is fixed through the foam, so that the cost is low; the tin passing hole is formed in the nickel sheet, so that the nickel sheet assembling step is simplified; and the tin passing hole is arranged to be strip-shaped, so that the welding effect of the acquisition branch and the nickel sheet is ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery module acquisition components, specifically relating to a battery module acquisition component using a flexible flat cable. Background Technology

[0002] In existing battery modules, the temperature and voltage of the battery cells are collected via an integrated busbar. In existing integrated busbars, the data collection components are mounted onto the battery module via a bracket, which is formed using injection molding or vacuum forming processes, requiring certain materials and incurring production costs.

[0003] Furthermore, for integrated busbars using Flexible Flat Cable (FFC), the acquisition branches of the FFC cable are connected to the busbar via nickel strips. These nickel strips have two lugs. To attach the nickel strip to the acquisition branch, the branch is placed on the nickel strip, and then the two lugs are bent to press firmly against the branch. Finally, they are secured using resistance welding. This nickel strip assembly process involves bending and pressing the lugs before resistance welding, resulting in multiple steps and a complex assembly procedure. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a battery module acquisition component using a flexible flat cable.

[0005] To achieve the above objectives, this utility model discloses a battery module acquisition component using a flexible flat cable, comprising foam, an FFC cable, and multiple nickel sheets;

[0006] The bottom and top surfaces of the foam are the first adhesive surface and the second adhesive surface, respectively. The first adhesive surface is used to bond and fix it to the battery module. The foam is provided with multiple vent holes.

[0007] The FFC cable is bonded and fixed to the second bonding surface. The FFC cable has multiple acquisition branches, and the free end of the acquisition branch is the connection part.

[0008] The nickel sheet has a through-hole for tinning. The through-hole is elongated and arranged along the width of the connection. The nickel sheet is placed on the acquisition branch so that the through-hole and the connection are positioned opposite each other and fixed by soldering.

[0009] Preferably, the length of the through-hole is less than the width of the connector.

[0010] Preferably, there are multiple through-holes.

[0011] Preferably, multiple through holes are spaced apart along the width direction of the connector.

[0012] Preferably, multiple through holes are spaced apart along the length of the connection portion.

[0013] Preferably, at least some of the through-holes have different lengths.

[0014] Preferably, it also includes a connector, wherein one end of the FFC cable is punched to form a connecting gold finger, which is detachably connected to the connector.

[0015] Preferably, each flat copper wire in the FFC cable is partially punched to form a fuse.

[0016] Preferably, each collection branch is wrapped with a Mylar membrane.

[0017] Preferably, the welding position between the connecting part and the nickel sheet is provided with protective adhesive.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This utility model's battery module acquisition component adhesively fixes the FFC cable to foam, which in turn fixes it to the battery module. The FFC cable is assembled using the foam, which is more cost-effective than the existing bracket-based fixing method. The foam has elastic cushioning and heat insulation functions, which can mitigate the impact of cell expansion and also provide some heat insulation between the battery module and the FFC cable, reducing the heat's impact on the FFC cable. Furthermore, the FFC cable can be directly adhesiveed to the foam, making assembly convenient and the assembly process simple.

[0020] The nickel sheet has a through hole for tinning. The nickel sheet is placed on the acquisition branch so that the through hole and the connecting part are positioned opposite each other and fixed by soldering. In other words, the nickel sheet can be directly fixed to the connecting part by soldering. The assembly process has fewer steps and is simpler.

[0021] The inclusion of a through-hole allows molten solder to flow between the connector and the nickel plate, facilitating soldering and improving connection reliability. Since the acquisition branches of FFC cables typically require bending with low precision, it's difficult to ensure the connector is positioned opposite the through-hole. Therefore, this invention designs the through-hole as an elongated strip along the width of the connector, providing tolerance space and ensuring a good soldering result. Attached Figure Description

[0022] Figure 1 for Figure 1 A three-dimensional structural diagram of the battery module acquisition component using a flexible flat cable;

[0023] Figure 2 for Figure 1 A three-dimensional exploded view of the data acquisition component of a battery module using flexible flat cables;

[0024] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0025] Foam 100; Vent hole 110;

[0026] FFC cable 200; acquisition branch 210; connector 211;

[0027] Nickel sheet 300; tin through-hole 310;

[0028] Connector 400. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] A battery module data acquisition component using a flexible flat cable, see [link / reference]. Figures 1-3 The system includes foam 100, FFC cable 200, and multiple nickel sheets 300. The bottom and top surfaces of foam 100 are the first and second adhesive surfaces, respectively. The first adhesive surface is used for bonding and fixing to the battery module. Foam 100 has multiple vent holes 110, each vent hole 110 being positioned opposite to the anti-burst feature of one cell in the battery module. FFC cable 200 is bonded and fixed to the second adhesive surface. FFC cable 200 has multiple acquisition branches 210, the free ends of which are connecting portions 211. Nickel sheets 300 have solder through holes 310, which are elongated and arranged along the width of the connecting portions 211. Nickel sheets 300 are positioned on the acquisition branches 210 so that the solder through holes and connecting portions 211 are positioned opposite each other and fixed by soldering.

[0031] In this embodiment, the battery module acquisition component uses foam 100 to bond and fix the FFC cable 200 to the battery module. This is less expensive than the existing method of fixing it with a bracket. The foam 100 has a certain elasticity, buffering, and heat insulation function, which can alleviate the impact of cell expansion and also provide some heat insulation between the battery module and the FFC cable 200, reducing the impact of heat on the FFC cable 200. In addition, the FFC cable 200 can be directly bonded to the foam 100, making assembly convenient and the assembly process simple. The nickel sheet 300 is provided with a solder through hole 310. The nickel sheet 300 is located on the acquisition branch 210, with the solder through hole and the connecting part 211 facing each other and fixed by soldering. That is, the nickel sheet 300 can be directly fixed to the connecting part 211 by soldering, with fewer assembly steps and a simpler process. The solder through hole allows molten solder to flow into the position between the connecting part 211 and the nickel sheet 300, which facilitates soldering and improves connection reliability. Since the acquisition branch 210 of the FFC cable 200 generally needs to be bent, and its bending accuracy is low, it is difficult to ensure that the connecting part 211 of the acquisition branch 210 is located opposite to the solder via. Therefore, this invention sets the solder via 310 as an elongated strip and arranges it along the width direction of the connecting part 211. This provides a tolerance space for the connecting part 211 of the acquisition branch 210 and ensures the soldering effect of the two.

[0032] The width direction mentioned above refers to the direction of the width of the acquisition branch 210, and the corresponding length direction refers to the direction of the length of the acquisition branch 210.

[0033] In this embodiment, the side of the connecting portion 211 facing the nickel sheet 300 is exposed, while the side facing away from the nickel sheet 300 is provided with an insulating protective film. The length of the through-hole 310 is less than the width of the connecting portion 211, thus preventing the back of the connecting portion 211 from being damaged by the insulating protective film and reducing the insulation performance.

[0034] In this embodiment, there are multiple through-holes 310; in this embodiment, there are two. If a soldering defect occurs during welding, the nickel sheet 300 can be removed and soldered through another through-hole. The nickel sheet 300 can be reused, saving material costs. The two through-holes can be spaced apart along the length or width of the connecting portion 211.

[0035] Multiple through-holes are spaced apart along the width of the connection portion 211. Thus, when a battery module is collected by two FFC cables 200 and some of the collection branches 210 of the two FFC cables 200 overlap, the two collection branches 210 can each be soldered onto the through-hole 310 of a nickel sheet 300.

[0036] Preferably, at least some of the through-holes have different lengths, so that they can be adapted to FFC 200 with flat copper wire width, and have high versatility.

[0037] In this embodiment, the acquisition component also includes a connector 400. One end of the FFC cable 200 is punched to form a connecting gold finger, which is detachably connected to the connector 400. Specifically, it is connected to the connector 400 by plugging in. This connection method is simple, easy to assemble, and also easy to repair.

[0038] In the FFC cable 200, each flat copper wire is partially punched to form a fuse. This ensures safety by causing the fuse to blow in the event of excessive current or overload. Directly punching the fuse into each flat copper wire eliminates the need for additional fuse structures, resulting in lower costs.

[0039] In this embodiment, each collection branch 210 is wrapped with a Mylar membrane, which prevents the collection branch 210 from being pulled or torn.

[0040] In this embodiment, the welding position of the connecting part 211 and the nickel sheet 300 is provided with protective adhesive, which can protect the welding position and prevent damage to the connecting structure from external forces.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery module data acquisition component using a flexible flat cable, characterized in that: Includes foam, FFC cable and multiple nickel strips; The bottom and top surfaces of the foam are the first adhesive surface and the second adhesive surface, respectively. The first adhesive surface is used to bond and fix it to the battery module. The foam is provided with multiple vent holes. The FFC cable is bonded and fixed to the second bonding surface. The FFC cable has multiple acquisition branches, and the free end of the acquisition branch is the connection part. The nickel sheet has a through-hole for tinning. The through-hole is elongated and arranged along the width of the connection. The nickel sheet is placed on the acquisition branch so that the through-hole and the connection are positioned opposite each other and fixed by soldering.

2. The battery module acquisition assembly using a flexible flat cable according to claim 1, characterized in that: The length of the through-hole is less than the width of the connector.

3. The battery module acquisition assembly using a flexible flat cable according to claim 1, characterized in that: There are multiple through-holes for tinning.

4. The battery module acquisition assembly using a flexible flat cable according to claim 3, characterized in that: Multiple solder vias are spaced apart along the width of the connector.

5. The battery module acquisition assembly using a flexible flat cable according to claim 3, characterized in that: Multiple solder vias are spaced apart along the length of the connector.

6. The battery module acquisition assembly using a flexible flat cable according to claim 3, characterized in that: At least some of the through-holes have different lengths.

7. The battery module acquisition assembly using a flexible flat cable according to claim 1, characterized in that: It also includes a connector, one end of which is punched to form a connecting gold finger, which is detachably connected to the connector.

8. The battery module acquisition assembly using a flexible flat cable according to claim 1, characterized in that: Each flat copper wire within the FFC cable is partially punched to form a fuse.

9. The battery module acquisition assembly using a flexible flat cable according to claim 1, characterized in that: Each collection branch is wrapped with a Mylar membrane.

10. The battery module acquisition assembly using a flexible flat cable according to claim 1, characterized in that: Protective adhesive is provided at the welding positions of the connecting parts and the nickel sheet.

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