Reinforcing plate with firm traceable information applied to power battery

Abstract

The utility model discloses a reinforcing plate with firm traceable information applied to a power battery, which comprises a base material, the base material is bonded with the reinforcing plate and a PI (polyimide) film together through an adhesive layer, the PI film is implemented in a manner of completely coating the reinforcing plate, a two-dimensional code is arranged on one side surface, coated by the PI film, of the reinforcing plate, and a heat conduction pad is arranged on the PI film; the heat conduction pad is provided with the reinforcing plate and the two-dimensional code, the whole structure is reinforced, the process is traceable, the PI film comprises the reinforcing plate and the two-dimensional code, the completeness of the structure and the two-dimensional code is guaranteed, abrasion is prevented, the functionality is guaranteed through structure optimization, meanwhile, the surface area of the heat conduction pad and the reinforcing plate is reduced, and cost is saved.

Description

Technical Field

[0001] This utility model relates to FPC structural design, and more particularly to a reinforcing plate with robust traceable information for use in power batteries. Background Technology

[0002] Flexible printed circuit boards (FPCs) have a wide range of applications, covering many areas. These include electronics, medical devices, automotive electronics, and others. Beyond these areas, FPCs are used in many other fields, such as implementing overcurrent protection, temperature monitoring, and voltage acquisition in power battery modules, demonstrating their potential in energy management. FPCs' applications span from consumer electronics to industrial applications, and their flexibility and efficiency make them an indispensable component of modern electronic devices.

[0003] In battery module components (CCS), the FPC (Flexible Printed Circuit) is a flexible circuit board with advantages such as high wiring density, light weight, and thinness. It is mainly used for the acquisition and transmission of cell voltage and temperature signals within the PACK and needs to meet the functional and performance requirements throughout its entire life cycle.

[0004] Traditional FPC structures consist of only two parts: a substrate and a protective film. Some traditional FPC structures lack a reinforcing plate and a traceable QR code. In other traditional FPC structures, the reinforcing plate and QR code are affixed to the outside of the PI film; however, the QR code pattern can wear down during manufacturing, transportation, assembly, and use, making product information untraceable. In still other traditional FPC structures, the reinforcing plate is adhered between the FPC and the thermal pad. To avoid gaps between the thermal pad and the FPC, the size of the reinforcing plate must match the size of the thermal pad. Since the thermal pad has a larger surface area (compared to the solder paste area) for more even heat distribution to the battery cell, the surface area of ​​the reinforcing plate must also be larger. Utility Model Content

[0005] To address the shortcomings of the aforementioned technologies, this invention provides a reinforcing plate with robust and traceable information for use in power batteries.

[0006] To solve the above technical problems, the technical solution adopted by this utility model is: a reinforcing plate with solid traceable information for use in power batteries, including a substrate, the substrate and the reinforcing plate and PI film are bonded together by an adhesive layer, the PI film is implemented in a way that fully covers the reinforcing plate, a QR code is set on the side of the reinforcing plate covered by the PI film, and a heat-conducting pad is set on the PI film.

[0007] Furthermore, the thermal pad is formed by transferring heat from the battery cell layer by layer, and the maximum diameter of the thermal pad is smaller than the maximum diameter of the reinforcing plate.

[0008] Furthermore, the PI film is a single layer and is brown and transparent, with a thickness of 25 μm.

[0009] Furthermore, the maximum diameter of the PI film is greater than the maximum diameter of the reinforcing plate and matches the maximum diameter of the substrate.

[0010] Furthermore, the PI film includes a covering body that connects to the thermal pad and matches the size of the reinforcing plate. The covering body forms a transition edge that transitions with the edge of the reinforcing plate, and the transition edge extends outward to form an extended edge.

[0011] Furthermore, the extended edging is bonded to the substrate via an adhesive layer.

[0012] Furthermore, the QR code is affixed to the reinforcing plate by printing or adhesive, and the QR code is implemented in a way that avoids the area covered by the thermal pad.

[0013] Furthermore, the NTC is connected to the non-adhesive layer adhesive side of the substrate.

[0014] A reinforcing plate with robust traceability information for use in power batteries is provided. It has a reinforcing plate and a QR code to strengthen the overall structure and make the process traceable. The PI film including the reinforcing plate and the QR code ensures the integrity of the structure and the QR code and prevents wear. The structure is optimized to ensure functionality while reducing the surface area of ​​the heat-conducting pad and the reinforcing plate, thus saving costs. Attached Figure Description

[0015] Figure 1 This is a side sectional view of the present invention.

[0016] Figure 2 This is a schematic diagram of the assembly of this utility model. Figure 1 .

[0017] Figure 3 This is a schematic diagram of the assembly of this utility model. Figure 2 .

[0018] In the diagram: 1. Thermal pad; 2. PI film; 3. Reinforcing plate; 4. Adhesive layer; 5. Substrate; 6. NTC; 7. Transition edging; 8. Extended edging. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1-2As shown in the figure, this embodiment relates to a reinforcing plate with robust traceable information for use in power batteries, including a substrate 5. The substrate 5 is bonded together with the reinforcing plate 3 and the PI film 2 by an adhesive layer 4. The PI film 2 is implemented in a way that fully covers the reinforcing plate 3. A QR code is set on the side of the reinforcing plate 3 covered by the PI film 2, and a heat-conducting pad 1 is set on the PI film 2.

[0021] Preferably, the thermal pad 1 is formed by transferring heat from the battery cell layer by layer. The maximum diameter of the thermal pad 1 is smaller than the maximum diameter of the reinforcing plate 3. This arrangement helps to reduce the surface area of ​​the thermal pad 1 and save costs, and also makes it easier for personnel to check the QR code on the reinforcing plate 3.

[0022] Preferably, the PI film 2 is a single layer and is brown and transparent. The thickness of the PI film 2 is 25 μm. The PI film 2, or polyimide film, is a high-performance organic polymer material. As a high-performance thin-film insulating material, it plays the role of insulation and withstand voltage between the FPC circuit and other adjacent parts in this embodiment.

[0023] Furthermore, the maximum diameter of the PI film 2 is greater than the maximum diameter of the reinforcing plate 3 and matches the maximum diameter of the substrate 5. Because the size of the PI film 2 is larger than that of the reinforcing plate 3, the reinforcing plate 3 is fully covered by the PI film 2. The setting of the reinforcing plate 3 in this embodiment increases the feasibility of SMT soldering. It should be noted that SMT soldering is a soldering method of existing surface mount technology. In addition, the reinforcing plate 3 helps to enhance the strength of the overall structure and can prevent abnormalities such as solder paste joint tearing and cold solder joints caused by product bending during production, packaging, transportation and assembly.

[0024] Based on this, the PI film 2 includes a covering body that connects to the heat-conducting pad 1 and matches the size of the reinforcing plate 3. The covering body forms a transition edge 7 around the edges that transition to the edge of the reinforcing plate 3. The transition edge 7 extends outward to form an extended edge 8.

[0025] Furthermore, the extended edge 8 is bonded to the substrate 5 via the adhesive layer 4, thereby forming a strong connection structure. In this embodiment, the substrate 5 is made of copper, i.e., a copper substrate, which is the basic material of the circuit board. It is used to support and fix electronic components and wires, making the entire circuit board structure stable. Moreover, the good electrical conductivity of the copper substrate can provide fast and stable current transmission, enabling effective electrical signal conduction between electronic components. In addition, the high thermal conductivity of the copper substrate can effectively disperse and conduct the heat generated by the electronic components, maintaining the normal operating temperature of the circuit board and electronic components and preventing overheating. Finally, the work of connecting electronic components and wires on the copper substrate through welding technology is mainly completed through the welding joints on the copper substrate, ensuring a reliable connection between components and wires.

[0026] In this embodiment, the QR code is set on the reinforcing plate 3 by printing or adhesive. The QR code is also set in a way that avoids the area covered by the heat-conducting pad 1. That is, the QR code is set in an area outside the area where the heat-conducting pad 1 covers the reinforcing plate 3. The specific setting location is not limited in this embodiment. The QR code is used to collect, record and trace various information of the product during the production and transportation process.

[0027] The non-adhesive layer 4 of the substrate 5 is connected to the NTC6. The heat of the battery cell is transferred to the NTC6 layer by layer through the thermal pad 1, and the NTC6 then transmits the electrical signal to the BMS.

[0028] This application discloses a reinforcing plate with robust traceability information for use in power batteries. It has a reinforcing plate and a QR code, which strengthens the overall structure and makes the process traceable. Furthermore, the PI film, including the reinforcing plate and the QR code, ensures the integrity of the structure and the QR code and prevents wear. Through structural optimization, the functionality is guaranteed while reducing the surface area of ​​the heat-conducting pad and the reinforcing plate, thus saving costs.

[0029] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A reinforcing plate with robust traceable information for use in power batteries, characterized in that: The substrate (5) is bonded together with the reinforcing plate (3) and the PI film (2) by the adhesive layer (4). The PI film (2) is implemented by fully covering the reinforcing plate (3). A QR code is set on the side of the reinforcing plate (3) covered by the PI film (2). A heat-conducting pad (1) is set on the PI film (2).

2. The reinforcing plate with robust traceable information applied to power batteries according to claim 1, characterized in that: The heat-conducting pad (1) is formed by transferring heat from the battery core layer by layer, and the maximum diameter of the heat-conducting pad (1) is smaller than the maximum diameter of the reinforcing plate (3).

3. The reinforcing plate with robust traceable information applied to power batteries according to claim 1, characterized in that: The PI film (2) is a single layer and is brown and transparent, with a thickness of 25 μm.

4. The reinforcing plate with robust traceable information applied to power batteries according to claim 3, characterized in that: The maximum diameter of the PI film (2) is greater than the maximum diameter of the reinforcing plate (3) and matches the maximum diameter of the substrate (5).

5. The reinforcing plate with robust traceable information applied to a power battery according to claim 4, characterized in that: The PI film (2) includes a covering body that is connected to the heat-conducting pad (1) and matches the size of the reinforcing plate (3). A transition edge (7) is formed around the covering body that transitions to the edge of the reinforcing plate (3). The transition edge (7) extends outward to form an extended edge (8).

6. The reinforcing plate with robust traceable information applied to a power battery according to claim 5, characterized in that: The extended edge (8) is bonded to the substrate (5) by an adhesive layer (4).

7. The reinforcing plate with robust traceable information applied to a power battery according to claim 1, characterized in that: The QR code is set on the reinforcing plate (3) by printing or adhesive, and the QR code is implemented in a way that avoids the coverage of the heat-conducting pad (1).

8. The reinforcing plate with robust traceable information applied to a power battery according to claim 1, characterized in that: The non-adhesive layer (4) of the substrate (5) is bonded to the NTC (6).

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