Processing method of battery protection board with reinforcing structure, battery protection board and electronic equipment

Abstract

The invention discloses a processing method of a battery protection plate with a reinforcing structure, the battery protection plate and electronic equipment. The processing method comprises the following steps: arranging a first release film on a sintered iron plate; an FPC soft board is placed on the first release film, a to-be-pressed reinforcing structure is arranged on the FPC soft board, and a reinforcing face of the reinforcing structure is placed downwards; a second release film is arranged on the reinforcing structure, and glass fabric is arranged on the second release film; and performing press fit connection on the FPC soft board and the reinforcing structure by using a vacuum press. By adjusting the orientation of a product during pressing, reinforcing upward is changed into downward, and glass fabric is additionally placed on the release film above the plate, so that the heating rate of the two surfaces of the plate surface during pressing reaches a better balance, and the flatness of the plate surface is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery protection boards, and in particular to a method for processing a battery protection board with a reinforcement structure, a battery protection board and an electronic device. Background Art

[0002] In the related art, after the battery protection board with FR4 reinforcement is formed by pasting the FR4 reinforcement gong plate, due to the characteristics of FR4 and the asymmetric stress release of the battery board after forming, it is easy to cause low flatness of the back plate of the gong plate, especially after the client passes through the reflow oven, which will lead to lower flatness, and then cause the client's binding product to be poorly positioned, and the component feet are difficult to level. Summary of the invention

[0003] The purpose of the present application is to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a method for processing a battery protection plate with a reinforcement structure, which can improve the flatness of the battery protection plate with a reinforcement structure, thereby reducing the warping.

[0004] The present application also proposes a battery protection plate manufactured using the above-mentioned battery protection plate processing method with a reinforcement structure.

[0005] The present application also proposes an electronic device comprising the battery protection board.

[0006] According to the first aspect of the present application, a method for processing a battery protection plate with a reinforcement structure includes the following steps:

[0007] Arranging a first release film on the fired iron plate;

[0008] Placing an FPC soft board on the first release film, and setting a reinforcing structure to be pressed on the FPC soft board, wherein the reinforcing surface of the reinforcing structure is placed downward;

[0009] Disposing a second release film on the reinforcing structure, and disposing a glass fiber cloth on the second release film;

[0010] The FPC soft board and the reinforcement structure are pressed and connected by using a vacuum press.

[0011] The processing method of a battery protection plate with a reinforcement structure according to the first aspect of the embodiment of the present application has at least the following beneficial effects: by adjusting the orientation of the product during pressing, the reinforcement is changed from upward to downward, and glass fiber cloth is placed on the release film above the plate so that the heating rates on both sides of the plate surface during pressing reach a better balance, thereby improving the flatness of the plate surface.

[0012] According to the method for processing a battery protection plate with a reinforcement structure described in the embodiment of the first aspect of the present application, the reinforcement structure is a black FR4 reinforcement structure.

[0013] According to the method for processing a battery protection board with a reinforcement structure described in the first aspect embodiment of the present application, corresponding through holes are respectively provided on the FPC soft board and the black FR4 reinforcement structure, and the FPC soft board and the black FR4 reinforcement structure are positioned and stacked through the through holes.

[0014] According to the processing method of the battery protection board with a reinforcement structure described in the first aspect embodiment of the present application, hot melt adhesive is set between the FPC soft board and the black FR4 reinforcement structure, and then they are bonded together by rolling and pressed on a vacuum press. During pressing, the difference in the heating rate of the two sides of the FPC soft board is within a preset range, so that the temperature of the two sides is balanced and improved to achieve curing, and the gong plate is formed after curing.

[0015] According to the processing method of the battery protection plate with a reinforcement structure described in the first aspect of the present application, the method of pressing using a vacuum press includes: pre-pressing for 20±10S, then forming for 90±20S, the forming temperature is 180±10℃, the pressure is 19±2kg / cm 2 .

[0016] According to the method for processing a battery protection plate with a reinforcement structure described in the embodiment of the first aspect of the present application, the reinforcement structure is a steel sheet reinforcement structure.

[0017] According to the processing method of the battery protection board with a reinforcement structure described in the first aspect of the embodiment of the present application, the FPC soft board is obtained by punching or laser cutting the FPC panel substrate, and the gong plate is formed simultaneously during the punching or laser cutting;

[0018] After hot melt adhesive is provided on the steel sheet reinforcement structure, it is attached to the FPC soft board, and then a vacuum press is used for press connection.

[0019] According to the method for processing a battery protection plate with a reinforcement structure described in the embodiment of the first aspect of the present application, the steel sheet reinforcement structure is made of an insulating steel sheet.

[0020] According to the second aspect of the present application, the battery protection plate includes: a battery protection plate with a reinforcement structure manufactured by the processing method of the first aspect of the present application.

[0021] An electronic device according to an embodiment of the third aspect of the present application includes: a battery protection board as described in the embodiment of the second aspect of the present application.

[0022] It is not difficult to understand that the battery protection board in the second aspect embodiment of the present application and the electronic device in the third aspect embodiment of the present application both have the technical effects of the battery protection board processing method with reinforcement structure in the first aspect embodiment mentioned above, and therefore will not be elaborated on.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present application is further described below with reference to the accompanying drawings and embodiments;

[0025] Figure 1 This is a flow chart of an embodiment of the present application. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0027] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In the description of this application, "several" means one or more, "more" means at least two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application after combining the specific content of the technical solution.

[0030] It is understandable that aqua FR4 boards are generally used in computers, electronic switches, computer peripherals, communication products, office automation equipment, automated instruments, military and aviation electronic products, household appliances and other products, because it has good quality stability and flatness, and is suitable for surface mounting and packaging substrate requirements. Yellow FR4 is widely used in the production of substrates for digital displays, dot matrix displays, LED displays, large-screen displays, electronic road signs, electronic signs, and electronic and electrical insulation structures with special requirements. Black substrates are widely used in optical instruments, cameras and other products, with the characteristics of stable quality and high flatness. Black FR4 is generally used in anti-static insulation projects or materials, with anti-static and flame retardant effects.

[0031] Reference Figure 1 The method for processing a battery protection plate with a reinforcement structure in the first embodiment of the present application comprises the following steps:

[0032] Arranging a first release film on the fired iron plate;

[0033] Placing an FPC soft board on the first release film, and setting a reinforcement structure to be pressed on the FPC soft board, wherein the reinforcement surface of the reinforcement structure is placed downward;

[0034] Disposing a second release film on the reinforcement structure, and disposing a glass fiber cloth on the second release film;

[0035] Use a vacuum press to press and connect the FPC soft board and the reinforcement structure.

[0036] Reference Figure 1 The processing method of the battery protection plate with a reinforcement structure of the first embodiment of the present application adjusts the orientation of the product during pressing, and the reinforcement is changed from upward to downward. A glass fiber cloth is placed on the release film above the plate to achieve a better balance between the heating rates on both sides of the plate during pressing, thereby improving the flatness of the plate surface.

[0037] In some embodiments of the present application, the reinforcement structure is a black FR4 reinforcement structure, and the specific black FR4 reinforcement is flatter than ordinary FR4, and stress is easier to release. When the gong plate is formed, the specific black FR4 reinforcement plate has better stress release and better flatness than the ordinary FR4 reinforcement plate. After reflow soldering, the specific black FR4 reinforcement plate has an obvious stress release effect, and the flatness after reflow soldering is better than the flatness before reflow soldering. However, the flatness of the ordinary FR4 reinforcement plate after the furnace is worse than that before reflow soldering.

[0038] In some embodiments, the reinforced battery protection board includes an FPC soft board, a specific black FR4 reinforcement and a thermosetting adhesive. The specific black FR4 reinforcement and the thermosetting adhesive are combined into an FR4 reinforcement with adhesive by rolling. A plurality of through holes are provided on the FPC soft board and the FR4 reinforcement with adhesive. The FPC soft board and the FR4 reinforcement with adhesive are stacked in sequence through the through holes and pressed together.

[0039] In some embodiments of the present application, corresponding through holes are respectively provided on the FPC soft board and the black FR4 reinforcement structure, and the FPC soft board and the black FR4 reinforcement structure are positioned and stacked through the through holes. It is understandable that during positioning, the through holes of the FPC soft board and the black FR4 reinforcement structure need to be aligned respectively after being attached to ensure the accurate positioning of the setting, so as to improve the positioning accuracy by using the through holes, improve the efficiency of stacking, and reduce the positioning time.

[0040] In some embodiments, a jig is used during positioning so that the through holes of the FPC soft board and the black FR4 reinforcement structure can be aligned after bonding, thereby further improving the positioning accuracy by using the through holes and the jig.

[0041] In some embodiments of the present application, after hot melt adhesive is set between the FPC soft board and the black FR4 reinforcement structure, they are bonded by rolling and pressed on a vacuum press. During pressing, the difference in the heating rate of the two sides of the FPC soft board is within a preset range, so that the temperature of the two sides is balanced and improved to achieve curing, and the gong plate is formed after curing. It can be understood that the reinforced battery protection board includes an FPC soft board, a specific reinforcement structure and a thermosetting adhesive. The specific black FR4 reinforcement and the thermosetting adhesive are combined into a reinforced structure with adhesive by rolling. The FPC soft board and the reinforced structure with adhesive are provided with a number of through holes. The FPC soft board and the reinforced structure with adhesive are stacked in sequence through the through holes and pressed together. The specific black FR4 reinforcement is flatter than ordinary FR4, and stress is easier to release. When the gong plate is formed, the specific black FR4 reinforcement plate has better stress release and better flatness than the ordinary FR4 reinforcement plate.

[0042] In some embodiments of the present application, the method of laminating by using a vacuum press includes: pre-pressing for 20±10S, then forming for 90±20S, the temperature during forming is 180±10℃, and the pressure is 19±2kg / cm2. It can be understood that by adjusting the orientation of the product during laminating, changing the reinforcement from upward to downward, placing glass fiber cloth on the release film above the board, and adjusting the laminating parameters so that the heating rates of both sides of the board surface during laminating reach a better balance, the board surface, especially the FR4 reinforcement stress, can be well released, thereby improving the flatness of the board surface.

[0043] In some embodiments, the compression parameters after testing and optimization are pre-compression time 20S, forming time 130S, temperature 180°C, pressure 21kg / cm 2 .

[0044] In some embodiments of the present application, the reinforcement structure is a steel sheet reinforcement structure. It is understandable that the steel sheet reinforcement is flatter than ordinary FR4. Due to its material properties, it will not have obvious warping changes after high-temperature pressing and reflow soldering, so it is beneficial to improve the flatness of the board, especially for improving the flatness of the board with a long reinforcement size.

[0045] In some embodiments, the reinforced battery protection board includes a punched or laser cut FPC soft board and an adhesive-insulated steel sheet reinforcement. The adhesive-insulated steel sheet reinforcement is attached to the FPC soft board by machine or manually and then pressed and connected.

[0046] In some embodiments of the present application, the FPC soft board is obtained by punching or laser cutting from the FPC panel substrate, and the gong plate forming is carried out simultaneously during the punching or laser cutting; after setting hot melt adhesive on the steel sheet reinforcement structure, it is bonded to the FPC soft board, and then pressed and connected by a vacuum press. It can be understood that the burrs after the gong plate are improved by punching or laser cutting the FPC soft board forming instead of the original last step of gong plate forming. The process steps before optimization are: FPC soft board → punching or laser cutting → assembly and bonding FR4 reinforcement → pressing → curing → gong plate forming. After optimization in this embodiment: FPC soft board → punching or laser cutting → assembly / machine bonding of insulating steel sheet reinforcement with adhesive → pressing → curing.

[0047] In some embodiments, when assembling / machine pasting the adhesive insulating steel sheet for reinforcement, only a single PCS steel sheet is pasted at the position where the finished product needs to be pasted and reinforced, and the product is completed after pasting, pressing and curing. Before the optimization, the whole board was assembled and FR4 was pasted manually, which was not efficient, and the gong plate was still needed to be formed after pasting, pressing and curing.

[0048] In some embodiments, during punching or laser cutting, the forming part includes the positions of punching or laser cutting and gong plate forming before optimization. The gong plate position is punched / laser formed in advance to prepare for preventing burrs from being produced by gong plate forming after the steel sheet is attached and punching forming from being difficult to form due to excessive thickness of the steel sheet.

[0049] In some embodiments, the steel sheet reinforcement structure is made of insulating steel sheets. It is understandable that some FR4 reinforced solar panels require insulation due to different usage scenarios. At this time, using ordinary steel sheet reinforcement to replace FR4 reinforcement may cause safety hazards, so specific insulating steel sheets are used for reinforcement.

[0050] In some embodiments of the present application, a method of making a board to improve the flatness of a battery protection board with FR4 reinforcement is provided, and the flatness of the product is improved by optimizing the reinforcement material and the pressing method. This includes optimizing the FR4 reinforcement type, the pressing method and the pressing parameters, including optimizing the ordinary yellow FR4 reinforcement to a specific black FR4 reinforcement, or optimizing the ordinary yellow FR4 reinforcement to an insulating steel sheet reinforcement. Optimizing the pressing method and pressing parameters includes adjusting the orientation of the product during pressing, changing the reinforcement from upward to downward, placing fiberglass cloth on the release film above the board, and adjusting the pressing parameters so that the heating rates on both sides of the board surface during pressing reach a better balance, so that the stress of the board surface, especially the FR4 reinforcement, is well released, thereby improving the flatness of the board surface.

[0051] In some embodiments, several single FPC panels are assembled on the same substrate and then pressed together, so that the substrate and the covering film are bonded together. Punching or laser cutting is used to place the FPC soft board in a state where it is to be reinforced with a steel sheet. Assembly / machine pasting of the adhesive-bonded insulating steel sheet reinforcement The adhesive-bonded insulating steel sheet is bonded to the FPC board by assembly or machine pasting. The board with the bonded steel sheet reinforcement is pressed by a vacuum press machine so that the reinforcement fits tightly to the FPC soft board. The glue bonded to the steel sheet and the FPC is cured so that the reinforcement fits tightly to the FPC soft board and is not easy to separate.

[0052] Reference Figure 1The battery protection plate of the second embodiment of the present application includes a battery protection plate with a reinforcement structure made by the processing method of the first embodiment of the present application. The flatness of the product is improved by optimizing the reinforcement material and the compression plate making method, and the warpage can be reduced to ≤0.4%. The processing accuracy of the product is guaranteed while meeting the use requirements. The specific optimization of the reinforcement material includes optimizing the ordinary yellow FR4 reinforcement to a specific black FR4 reinforcement. The specific black FR4 reinforcement is flatter than the ordinary FR4, and the stress is easier to release. When the gong plate is formed, the specific black FR4 reinforcement plate has better stress release and better flatness than the ordinary FR4 reinforcement plate. After reflow soldering, the stress release effect of the specific black FR4 reinforcement plate is obvious, and the flatness after reflow soldering is better than the flatness before reflow soldering. The flatness of ordinary FR4 reinforcement board after the furnace is worse than that before reflow soldering, or the ordinary yellow FR4 reinforcement is optimized to be reinforced with insulating steel sheet. The steel sheet reinforcement is flatter than ordinary FR4. Due to its material characteristics, it will not have obvious warping changes after high-temperature pressing and reflow soldering, so it is beneficial to improve the flatness of the board, especially for improving the flatness of the long reinforced board. The optimization of the pressing board method includes adjusting the direction of the product during pressing, changing the reinforcement upward to downward, adding glass fiber cloth on the release film above the board, and adjusting the pressing parameters to achieve a better balance between the heating rates of both sides of the board during pressing, so that the stress of the board surface, especially the FR4 reinforcement, is well released, thereby improving the flatness of the board surface. At the same time, the reinforcement of some FR4 reinforced solar panels needs to be insulated due to different use occasions. At this time, using ordinary steel sheet reinforcement to replace FR4 reinforcement may cause safety hazards, so specific insulating steel sheets are used for reinforcement. Furthermore, in order to prevent the burrs on the gong plate after the FR4 reinforcement is optimized to be reinforced with insulating steel sheets, the burrs behind the gong plate are improved by punching or laser cutting the FPC soft board forming instead of the original gong plate forming.

[0053] Reference Figure 1 The electronic device of the third aspect embodiment of the present application includes the battery protection board of the second aspect embodiment of the present application. The battery protection board has higher flatness, so that the electronic device with this battery protection board has higher product quality.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A method for processing a battery protection plate with a reinforcement structure, characterized in that: The following steps are involved: Arranging a first release film on the fired iron plate; Placing an FPC soft board on the first release film, and setting a reinforcing structure to be pressed on the FPC soft board, wherein the reinforcing surface of the reinforcing structure is placed downward; Disposing a second release film on the reinforcing structure, and disposing a glass fiber cloth on the second release film; The FPC soft board and the reinforcement structure are pressed and connected by using a vacuum press.

2. The method for processing a battery protection plate with a reinforcement structure according to claim 1, characterized in that: The reinforcement structure is a black FR4 reinforcement structure.

3. The method for processing a battery protection plate with a reinforcement structure according to claim 2, characterized in that: The FPC soft board and the black FR4 reinforcement structure are respectively provided with corresponding through holes, and the FPC soft board and the black FR4 reinforcement structure are positioned and stacked through the through holes.

4. The method for processing a battery protection plate with a reinforcement structure according to claim 2, characterized in that: After hot melt adhesive is set between the FPC soft board and the black FR4 reinforcement structure, they are bonded together by rolling and pressed on a vacuum press. During pressing, the difference in the temperature rise rates of the two sides of the FPC soft board is within a preset range, so that the temperatures of the two sides are balanced and cured, and the gong plate is formed after curing.

5. The method for processing a battery protection plate with a reinforcement structure according to claim 4, characterized in that: The method of pressing with a vacuum press includes: pre-pressing for 20±10S, then forming for 90±20S, the forming temperature is 180±10℃, the pressure is 19±2kg / cm 2 .

6. The method for processing a battery protection plate with a reinforcement structure according to claim 1, characterized in that: The reinforcement structure is a steel sheet reinforcement structure.

7. The method for processing a battery protection plate with a reinforcement structure according to claim 6, characterized in that: The FPC soft board is obtained by punching or laser cutting the FPC panel substrate, and the gong board is formed simultaneously during the punching or laser cutting; After hot melt adhesive is provided on the steel sheet reinforcement structure, it is attached to the FPC soft board, and then a vacuum press is used for press connection.

8. The method for processing a battery protection plate with a reinforcement structure according to claim 6, characterized in that: The steel sheet reinforcement structure is made of insulating steel sheets.

9. A battery protection board, characterized in that: include: It is manufactured using the battery protection plate processing method with a reinforcement structure as described in any one of claims 1 to 8.

10. An electronic device, characterized in that: include: The battery protection board as claimed in claim 9.

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